diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-20 10:12:41 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-20 10:12:41 -0700 |
| commit | c04a5880299eab3da8c10547db96ea9cdffd44a6 (patch) | |
| tree | 8708b60e410780ce8ea2074335033b016cab4c4f | |
| parent | a1c28b75a95808161cacbb3531c418abe248994e (diff) | |
| parent | 138a076496e61c68ebc1dcccc088705826bbe26d (diff) | |
Merge tag 'powerpc-4.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
"Highlights:
- Support for Power ISA 3.0 (Power9) Radix Tree MMU from Aneesh Kumar K.V
- Live patching support for ppc64le (also merged via livepatching.git)
Various cleanups & minor fixes from:
- Aaro Koskinen, Alexey Kardashevskiy, Andrew Donnellan, Aneesh Kumar K.V,
Chris Smart, Daniel Axtens, Frederic Barrat, Gavin Shan, Ian Munsie,
Lennart Sorensen, Madhavan Srinivasan, Mahesh Salgaonkar, Markus Elfring,
Michael Ellerman, Oliver O'Halloran, Paul Gortmaker, Paul Mackerras,
Rashmica Gupta, Russell Currey, Suraj Jitindar Singh, Thiago Jung
Bauermann, Valentin Rothberg, Vipin K Parashar.
General:
- Update LMB associativity index during DLPAR add/remove from Nathan
Fontenot
- Fix branching to OOL handlers in relocatable kernel from Hari Bathini
- Add support for userspace Power9 copy/paste from Chris Smart
- Always use STRICT_MM_TYPECHECKS from Michael Ellerman
- Add mask of possible MMU features from Michael Ellerman
PCI:
- Enable pass through of NVLink to guests from Alexey Kardashevskiy
- Cleanups in preparation for powernv PCI hotplug from Gavin Shan
- Don't report error in eeh_pe_reset_and_recover() from Gavin Shan
- Restore initial state in eeh_pe_reset_and_recover() from Gavin Shan
- Revert "powerpc/eeh: Fix crash in eeh_add_device_early() on Cell"
from Guilherme G Piccoli
- Remove the dependency on EEH struct in DDW mechanism from Guilherme
G Piccoli
selftests:
- Test cp_abort during context switch from Chris Smart
- Add several tests for transactional memory support from Rashmica
Gupta
perf:
- Add support for sampling interrupt register state from Anju T
- Add support for unwinding perf-stackdump from Chandan Kumar
cxl:
- Configure the PSL for two CAPI ports on POWER8NVL from Philippe
Bergheaud
- Allow initialization on timebase sync failures from Frederic Barrat
- Increase timeout for detection of AFU mmio hang from Frederic
Barrat
- Handle num_of_processes larger than can fit in the SPA from Ian
Munsie
- Ensure PSL interrupt is configured for contexts with no AFU IRQs
from Ian Munsie
- Add kernel API to allow a context to operate with relocate disabled
from Ian Munsie
- Check periodically the coherent platform function's state from
Christophe Lombard
Freescale:
- Updates from Scott: "Contains 86xx fixes, minor device tree fixes,
an erratum workaround, and a kconfig dependency fix."
* tag 'powerpc-4.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (192 commits)
powerpc/86xx: Fix PCI interrupt map definition
powerpc/86xx: Move pci1 definition to the include file
powerpc/fsl: Fix build of the dtb embedded kernel images
powerpc/fsl: Fix rcpm compatible string
powerpc/fsl: Remove FSL_SOC dependency from FSL_LBC
powerpc/fsl-pci: Add a workaround for PCI 5 errata
powerpc/fsl: Fix SPI compatible on t208xrdb and t1040rdb
powerpc/powernv/npu: Add PE to PHB's list
powerpc/powernv: Fix insufficient memory allocation
powerpc/iommu: Remove the dependency on EEH struct in DDW mechanism
Revert "powerpc/eeh: Fix crash in eeh_add_device_early() on Cell"
powerpc/eeh: Drop unnecessary label in eeh_pe_change_owner()
powerpc/eeh: Ignore handlers in eeh_pe_reset_and_recover()
powerpc/eeh: Restore initial state in eeh_pe_reset_and_recover()
powerpc/eeh: Don't report error in eeh_pe_reset_and_recover()
Revert "powerpc/powernv: Exclude root bus in pnv_pci_reset_secondary_bus()"
powerpc/powernv/npu: Enable NVLink pass through
powerpc/powernv/npu: Rework TCE Kill handling
powerpc/powernv/npu: Add set/unset window helpers
powerpc/powernv/ioda2: Export debug helper pe_level_printk()
...
200 files changed, 6908 insertions, 3128 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-cxl b/Documentation/ABI/testing/sysfs-class-cxl index 7fd737eed38a..4ba0a2a61926 100644 --- a/Documentation/ABI/testing/sysfs-class-cxl +++ b/Documentation/ABI/testing/sysfs-class-cxl @@ -233,3 +233,11 @@ Description: read/write 0 = don't trust, the image may be different (default) 1 = trust that the image will not change. Users: https://github.com/ibm-capi/libcxl + +What: /sys/class/cxl/<card>/psl_timebase_synced +Date: March 2016 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read only + Returns 1 if the psl timebase register is synchronized + with the core timebase register, 0 otherwise. +Users: https://github.com/ibm-capi/libcxl diff --git a/Documentation/features/perf/perf-regs/arch-support.txt b/Documentation/features/perf/perf-regs/arch-support.txt index e2b4a78ec543..f179b1fb26ef 100644 --- a/Documentation/features/perf/perf-regs/arch-support.txt +++ b/Documentation/features/perf/perf-regs/arch-support.txt @@ -27,7 +27,7 @@ | nios2: | TODO | | openrisc: | TODO | | parisc: | TODO | - | powerpc: | TODO | + | powerpc: | ok | | s390: | TODO | | score: | TODO | | sh: | TODO | diff --git a/Documentation/features/perf/perf-stackdump/arch-support.txt b/Documentation/features/perf/perf-stackdump/arch-support.txt index 3dc24b0673c0..85777c5c6353 100644 --- a/Documentation/features/perf/perf-stackdump/arch-support.txt +++ b/Documentation/features/perf/perf-stackdump/arch-support.txt @@ -27,7 +27,7 @@ | nios2: | TODO | | openrisc: | TODO | | parisc: | TODO | - | powerpc: | TODO | + | powerpc: | ok | | s390: | TODO | | score: | TODO | | sh: | TODO | diff --git a/Documentation/powerpc/eeh-pci-error-recovery.txt b/Documentation/powerpc/eeh-pci-error-recovery.txt index 9d4e33df624c..678189280bb4 100644 --- a/Documentation/powerpc/eeh-pci-error-recovery.txt +++ b/Documentation/powerpc/eeh-pci-error-recovery.txt @@ -12,7 +12,7 @@ Overview: The IBM POWER-based pSeries and iSeries computers include PCI bus controller chips that have extended capabilities for detecting and reporting a large variety of PCI bus error conditions. These features -go under the name of "EEH", for "Extended Error Handling". The EEH +go under the name of "EEH", for "Enhanced Error Handling". The EEH hardware features allow PCI bus errors to be cleared and a PCI card to be "rebooted", without also having to reboot the operating system. diff --git a/MAINTAINERS b/MAINTAINERS index 65f3277a8cf0..2c670ba7b7db 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6675,6 +6675,19 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git S: Supported F: Documentation/powerpc/ F: arch/powerpc/ +F: drivers/char/tpm/tpm_ibmvtpm* +F: drivers/crypto/nx/ +F: drivers/crypto/vmx/ +F: drivers/net/ethernet/ibm/ibmveth.* +F: drivers/net/ethernet/ibm/ibmvnic.* +F: drivers/pci/hotplug/rpa* +F: drivers/scsi/ibmvscsi/ +N: opal +N: /pmac +N: powermac +N: powernv +N: [^a-z0-9]ps3 +N: pseries LINUX FOR POWER MACINTOSH M: Benjamin Herrenschmidt <benh@kernel.crashing.org> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index a18a0dcd57b7..f0403b58ae8b 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -116,6 +116,8 @@ config PPC select GENERIC_ATOMIC64 if PPC32 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE select HAVE_PERF_EVENTS + select HAVE_PERF_REGS + select HAVE_PERF_USER_STACK_DUMP select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64 select ARCH_WANT_IPC_PARSE_VERSION @@ -606,9 +608,9 @@ endchoice config FORCE_MAX_ZONEORDER int "Maximum zone order" - range 9 64 if PPC64 && PPC_64K_PAGES + range 8 9 if PPC64 && PPC_64K_PAGES default "9" if PPC64 && PPC_64K_PAGES - range 13 64 if PPC64 && !PPC_64K_PAGES + range 9 13 if PPC64 && !PPC_64K_PAGES default "13" if PPC64 && !PPC_64K_PAGES range 9 64 if PPC32 && PPC_16K_PAGES default "9" if PPC32 && PPC_16K_PAGES @@ -795,7 +797,6 @@ config 4xx_SOC config FSL_LBC bool "Freescale Local Bus support" - depends on FSL_SOC help Enables reporting of errors from the Freescale local bus controller. Also contains some common code used by diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug index 638f9ce740f5..d3fcf7e64e3a 100644 --- a/arch/powerpc/Kconfig.debug +++ b/arch/powerpc/Kconfig.debug @@ -19,14 +19,6 @@ config PPC_WERROR depends on !PPC_DISABLE_WERROR default y -config STRICT_MM_TYPECHECKS - bool "Do extra type checking on mm types" - default n - help - This option turns on extra type checking for some mm related types. - - If you don't know what this means, say N. - config PRINT_STACK_DEPTH int "Stack depth to print" if DEBUG_KERNEL default 64 diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index 61165101342c..8fe78a3efc92 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -362,9 +362,6 @@ $(obj)/cuImage.initrd.%: vmlinux $(obj)/%.dtb $(wrapperbits) $(obj)/cuImage.%: vmlinux $(obj)/%.dtb $(wrapperbits) $(call if_changed,wrap,cuboot-$*,,$(obj)/$*.dtb) -$(obj)/cuImage.%: vmlinux $(obj)/fsl/%.dtb $(wrapperbits) - $(call if_changed,wrap,cuboot-$*,,$(obj)/fsl/$*.dtb) - $(obj)/simpleImage.initrd.%: vmlinux $(obj)/%.dtb $(wrapperbits) $(call if_changed,wrap,simpleboot-$*,,$(obj)/$*.dtb,$(obj)/ramdisk.image.gz) @@ -381,6 +378,9 @@ $(obj)/treeImage.%: vmlinux $(obj)/%.dtb $(wrapperbits) $(obj)/%.dtb: $(src)/dts/%.dts FORCE $(call if_changed_dep,dtc) +$(obj)/%.dtb: $(src)/dts/fsl/%.dts FORCE + $(call if_changed_dep,dtc) + # If there isn't a platform selected then just strip the vmlinux. ifeq (,$(image-y)) image-y := vmlinux.strip diff --git a/arch/powerpc/boot/dts/fsl/gef_ppc9a.dts b/arch/powerpc/boot/dts/fsl/gef_ppc9a.dts index 0424fc2bd0e0..c88d4ef9e4f7 100644 --- a/arch/powerpc/boot/dts/fsl/gef_ppc9a.dts +++ b/arch/powerpc/boot/dts/fsl/gef_ppc9a.dts @@ -211,6 +211,10 @@ 0x0 0x00400000>; }; }; + + pci1: pcie@fef09000 { + status = "disabled"; + }; }; /include/ "mpc8641si-post.dtsi" diff --git a/arch/powerpc/boot/dts/fsl/gef_sbc310.dts b/arch/powerpc/boot/dts/fsl/gef_sbc310.dts index 84b3d38f880e..838515798cce 100644 --- a/arch/powerpc/boot/dts/fsl/gef_sbc310.dts +++ b/arch/powerpc/boot/dts/fsl/gef_sbc310.dts @@ -24,10 +24,6 @@ model = "GEF_SBC310"; compatible = "gef,sbc310"; - aliases { - pci1 = &pci1; - }; - memory { device_type = "memory"; reg = <0x0 0x40000000>; // set by uboot @@ -223,29 +219,11 @@ }; pci1: pcie@fef09000 { - compatible = "fsl,mpc8641-pcie"; - device_type = "pci"; - #size-cells = <2>; - #address-cells = <3>; reg = <0xfef09000 0x1000>; - bus-range = <0x0 0xff>; ranges = <0x02000000 0x0 0xc0000000 0xc0000000 0x0 0x20000000 0x01000000 0x0 0x00000000 0xfe400000 0x0 0x00400000>; - clock-frequency = <100000000>; - interrupts = <0x19 0x2 0 0>; - interrupt-map-mask = <0xf800 0x0 0x0 0x7>; - interrupt-map = < - 0x0000 0x0 0x0 0x1 &mpic 0x4 0x2 - 0x0000 0x0 0x0 0x2 &mpic 0x5 0x2 - 0x0000 0x0 0x0 0x3 &mpic 0x6 0x2 - 0x0000 0x0 0x0 0x4 &mpic 0x7 0x2 - >; pcie@0 { - reg = <0 0 0 0 0>; - #size-cells = <2>; - #address-cells = <3>; - device_type = "pci"; ranges = <0x02000000 0x0 0xc0000000 0x02000000 0x0 0xc0000000 0x0 0x20000000 diff --git a/arch/powerpc/boot/dts/fsl/gef_sbc610.dts b/arch/powerpc/boot/dts/fsl/gef_sbc610.dts index 974446acce23..ff423ab424f2 100644 --- a/arch/powerpc/boot/dts/fsl/gef_sbc610.dts +++ b/arch/powerpc/boot/dts/fsl/gef_sbc610.dts @@ -209,6 +209,10 @@ 0x0 0x00400000>; }; }; + + pci1: pcie@fef09000 { + status = "disabled"; + }; }; /include/ "mpc8641si-post.dtsi" diff --git a/arch/powerpc/boot/dts/fsl/mpc8641_hpcn.dts b/arch/powerpc/boot/dts/fsl/mpc8641_hpcn.dts index 554001f2e96a..11bea3e6a43f 100644 --- a/arch/powerpc/boot/dts/fsl/mpc8641_hpcn.dts +++ b/arch/powerpc/boot/dts/fsl/mpc8641_hpcn.dts @@ -15,10 +15,6 @@ model = "MPC8641HPCN"; compatible = "fsl,mpc8641hpcn"; - aliases { - pci1 = &pci1; - }; - memory { device_type = "memory"; reg = <0x00000000 0x40000000>; // 1G at 0x0 @@ -359,29 +355,11 @@ }; pci1: pcie@ffe09000 { - compatible = "fsl,mpc8641-pcie"; - device_type = "pci"; - #size-cells = <2>; - #address-cells = <3>; reg = <0xffe09000 0x1000>; - bus-range = <0 0xff>; ranges = <0x02000000 0x0 0xa0000000 0xa0000000 0x0 0x20000000 0x01000000 0x0 0x00000000 0xffc10000 0x0 0x00010000>; - clock-frequency = <100000000>; - interrupts = <25 2 0 0>; - interrupt-map-mask = <0xf800 0 0 7>; - interrupt-map = < - /* IDSEL 0x0 */ - 0x0000 0 0 1 &mpic 4 1 - 0x0000 0 0 2 &mpic 5 1 - 0x0000 0 0 3 &mpic 6 1 - 0x0000 0 0 4 &mpic 7 1 - >; + pcie@0 { - reg = <0 0 0 0 0>; - #size-cells = <2>; - #address-cells = <3>; - device_type = "pci"; ranges = <0x02000000 0x0 0xa0000000 0x02000000 0x0 0xa0000000 0x0 0x20000000 diff --git a/arch/powerpc/boot/dts/fsl/mpc8641_hpcn_36b.dts b/arch/powerpc/boot/dts/fsl/mpc8641_hpcn_36b.dts index fec58671a6d6..7ff62046a9ea 100644 --- a/arch/powerpc/boot/dts/fsl/mpc8641_hpcn_36b.dts +++ b/arch/powerpc/boot/dts/fsl/mpc8641_hpcn_36b.dts @@ -17,10 +17,6 @@ #address-cells = <2>; #size-cells = <2>; - aliases { - pci1 = &pci1; - }; - memory { device_type = "memory"; reg = <0x0 0x00000000 0x0 0x40000000>; // 1G at 0x0 @@ -326,29 +322,11 @@ }; pci1: pcie@fffe09000 { - compatible = "fsl,mpc8641-pcie"; - device_type = "pci"; - #size-cells = <2>; - #address-cells = <3>; reg = <0x0f 0xffe09000 0x0 0x1000>; - bus-range = <0x0 0xff>; ranges = <0x02000000 0x0 0xe0000000 0x0c 0x20000000 0x0 0x20000000 0x01000000 0x0 0x00000000 0x0f 0xffc10000 0x0 0x00010000>; - clock-frequency = <100000000>; - interrupts = <25 2 0 0>; - interrupt-map-mask = <0xf800 0 0 7>; - interrupt-map = < - /* IDSEL 0x0 */ - 0x0000 0 0 1 &mpic 4 1 - 0x0000 0 0 2 &mpic 5 1 - 0x0000 0 0 3 &mpic 6 1 - 0x0000 0 0 4 &mpic 7 1 - >; + pcie@0 { - reg = <0 0 0 0 0>; - #size-cells = <2>; - #address-cells = <3>; - device_type = "pci"; ranges = <0x02000000 0x0 0xe0000000 0x02000000 0x0 0xe0000000 0x0 0x20000000 diff --git a/arch/powerpc/boot/dts/fsl/mpc8641si-post.dtsi b/arch/powerpc/boot/dts/fsl/mpc8641si-post.dtsi index 70889d8e8850..eeb7c65d5f22 100644 --- a/arch/powerpc/boot/dts/fsl/mpc8641si-post.dtsi +++ b/arch/powerpc/boot/dts/fsl/mpc8641si-post.dtsi @@ -102,19 +102,46 @@ bus-range = <0x0 0xff>; clock-frequency = <100000000>; interrupts = <24 2 0 0>; - interrupt-map-mask = <0xf800 0x0 0x0 0x7>; - interrupt-map = < - 0x0000 0x0 0x0 0x1 &mpic 0x0 0x1 - 0x0000 0x0 0x0 0x2 &mpic 0x1 0x1 - 0x0000 0x0 0x0 0x3 &mpic 0x2 0x1 - 0x0000 0x0 0x0 0x4 &mpic 0x3 0x1 - >; + pcie@0 { + reg = <0 0 0 0 0>; + #interrupt-cells = <1>; + #size-cells = <2>; + #address-cells = <3>; + device_type = "pci"; + interrupts = <24 2 0 0>; + interrupt-map-mask = <0xf800 0x0 0x0 0x7>; + interrupt-map = < + 0x0000 0x0 0x0 0x1 &mpic 0x0 0x1 0x0 0x0 + 0x0000 0x0 0x0 0x2 &mpic 0x1 0x1 0x0 0x0 + 0x0000 0x0 0x0 0x3 &mpic 0x2 0x1 0x0 0x0 + 0x0000 0x0 0x0 0x4 &mpic 0x3 0x1 0x0 0x0 + >; + }; +}; + +&pci1 { + compatible = "fsl,mpc8641-pcie"; + device_type = "pci"; + #size-cells = <2>; + #address-cells = <3>; + bus-range = <0x0 0xff>; + clock-frequency = <100000000>; + interrupts = <25 2 0 0>; pcie@0 { reg = <0 0 0 0 0>; + #interrupt-cells = <1>; #size-cells = <2>; #address-cells = <3>; device_type = "pci"; + interrupts = <25 2 0 0>; + interrupt-map-mask = <0xf800 0x0 0x0 0x7>; + interrupt-map = < + 0x0000 0x0 0x0 0x1 &mpic 0x4 0x1 0x0 0x0 + 0x0000 0x0 0x0 0x2 &mpic 0x5 0x1 0x0 0x0 + 0x0000 0x0 0x0 0x3 &mpic 0x6 0x1 0x0 0x0 + 0x0000 0x0 0x0 0x4 &mpic 0x7 0x1 0x0 0x0 + >; }; }; diff --git a/arch/powerpc/boot/dts/fsl/mpc8641si-pre.dtsi b/arch/powerpc/boot/dts/fsl/mpc8641si-pre.dtsi index 9e03328561d3..7c6db6f7c12e 100644 --- a/arch/powerpc/boot/dts/fsl/mpc8641si-pre.dtsi +++ b/arch/powerpc/boot/dts/fsl/mpc8641si-pre.dtsi @@ -25,6 +25,7 @@ serial0 = &serial0; serial1 = &serial1; pci0 = &pci0; + pci1 = &pci1; }; cpus { diff --git a/arch/powerpc/boot/dts/fsl/sbc8641d.dts b/arch/powerpc/boot/dts/fsl/sbc8641d.dts index 0a9733cd418d..75870a124903 100644 --- a/arch/powerpc/boot/dts/fsl/sbc8641d.dts +++ b/arch/powerpc/boot/dts/fsl/sbc8641d.dts @@ -19,10 +19,6 @@ model = "SBC8641D"; compatible = "wind,sbc8641"; - aliases { - pci1 = &pci1; - }; - memory { device_type = "memory"; reg = <0x00000000 0x20000000>; // 512M at 0x0 @@ -165,30 +161,11 @@ }; pci1: pcie@f8009000 { - compatible = "fsl,mpc8641-pcie"; - device_type = "pci"; - #size-cells = <2>; - #address-cells = <3>; reg = <0xf8009000 0x1000>; - bus-range = <0 0xff>; ranges = <0x02000000 0x0 0xa0000000 0xa0000000 0x0 0x20000000 0x01000000 0x0 0x00000000 0xe3000000 0x0 0x00100000>; - clock-frequency = <100000000>; - interrupts = <25 2 0 0>; - interrupt-map-mask = <0xf800 0 0 7>; - interrupt-map = < - /* IDSEL 0x0 */ - 0x0000 0 0 1 &mpic 4 1 - 0x0000 0 0 2 &mpic 5 1 - 0x0000 0 0 3 &mpic 6 1 - 0x0000 0 0 4 &mpic 7 1 - >; pcie@0 { - reg = <0 0 0 0 0>; - #size-cells = <2>; - #address-cells = <3>; - device_type = "pci"; ranges = <0x02000000 0x0 0xa0000000 0x02000000 0x0 0xa0000000 0x0 0x20000000 diff --git a/arch/powerpc/boot/dts/fsl/t1023si-post.dtsi b/arch/powerpc/boot/dts/fsl/t1023si-post.dtsi index 99e421df79d4..6e0b4892a740 100644 --- a/arch/powerpc/boot/dts/fsl/t1023si-post.dtsi +++ b/arch/powerpc/boot/dts/fsl/t1023si-post.dtsi @@ -263,7 +263,7 @@ }; rcpm: global-utilities@e2000 { - compatible = "fsl,t1023-rcpm", "fsl,qoriq-rcpm-2.0"; + compatible = "fsl,t1023-rcpm", "fsl,qoriq-rcpm-2.1"; reg = <0xe2000 0x1000>; }; diff --git a/arch/powerpc/boot/dts/fsl/t1040si-post.dtsi b/arch/powerpc/boot/dts/fsl/t1040si-post.dtsi index e0f4da554774..507649ece0a1 100644 --- a/arch/powerpc/boot/dts/fsl/t1040si-post.dtsi +++ b/arch/powerpc/boot/dts/fsl/t1040si-post.dtsi @@ -472,7 +472,7 @@ }; rcpm: global-utilities@e2000 { - compatible = "fsl,t1040-rcpm", "fsl,qoriq-rcpm-2.0"; + compatible = "fsl,t1040-rcpm", "fsl,qoriq-rcpm-2.1"; reg = <0xe2000 0x1000>; }; diff --git a/arch/powerpc/boot/dts/fsl/t104xrdb.dtsi b/arch/powerpc/boot/dts/fsl/t104xrdb.dtsi index 72691ef102ee..7c4afdb44b46 100644 --- a/arch/powerpc/boot/dts/fsl/t104xrdb.dtsi +++ b/arch/powerpc/boot/dts/fsl/t104xrdb.dtsi @@ -109,7 +109,7 @@ flash@0 { #address-cells = <1>; #size-cells = <1>; - compatible = "micron,n25q512a", "jedec,spi-nor"; + compatible = "micron,n25q512ax3", "jedec,spi-nor"; reg = <0>; spi-max-frequency = <10000000>; /* input clock */ }; diff --git a/arch/powerpc/boot/dts/fsl/t208xrdb.dtsi b/arch/powerpc/boot/dts/fsl/t208xrdb.dtsi index dc9326875778..ff87e67c70da 100644 --- a/arch/powerpc/boot/dts/fsl/t208xrdb.dtsi +++ b/arch/powerpc/boot/dts/fsl/t208xrdb.dtsi @@ -113,7 +113,7 @@ flash@0 { #address-cells = <1>; #size-cells = <1>; - compatible = "micron,n25q512a", "jedec,spi-nor"; + compatible = "micron,n25q512ax3", "jedec,spi-nor"; reg = <0>; spi-max-frequency = <10000000>; /* input clock */ }; diff --git a/arch/powerpc/include/asm/book3s/32/hash.h b/arch/powerpc/include/asm/book3s/32/hash.h index 264b754d65b0..880db13a2e9f 100644 --- a/arch/powerpc/include/asm/book3s/32/hash.h +++ b/arch/powerpc/include/asm/book3s/32/hash.h @@ -39,8 +39,5 @@ #define _PMD_PRESENT_MASK (PAGE_MASK) #define _PMD_BAD (~PAGE_MASK) -/* Hash table based platforms need atomic updates of the linux PTE */ -#define PTE_ATOMIC_UPDATES 1 - #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_BOOK3S_32_HASH_H */ diff --git a/arch/powerpc/include/asm/book3s/32/mmu-hash.h b/arch/powerpc/include/asm/book3s/32/mmu-hash.h index 16f513e5cbd7..b82e063494dd 100644 --- a/arch/powerpc/include/asm/book3s/32/mmu-hash.h +++ b/arch/powerpc/include/asm/book3s/32/mmu-hash.h @@ -1,5 +1,5 @@ -#ifndef _ASM_POWERPC_MMU_HASH32_H_ -#define _ASM_POWERPC_MMU_HASH32_H_ +#ifndef _ASM_POWERPC_BOOK3S_32_MMU_HASH_H_ +#define _ASM_POWERPC_BOOK3S_32_MMU_HASH_H_ /* * 32-bit hash table MMU support */ @@ -90,4 +90,4 @@ typedef struct { #define mmu_virtual_psize MMU_PAGE_4K #define mmu_linear_psize MMU_PAGE_256M -#endif /* _ASM_POWERPC_MMU_HASH32_H_ */ +#endif /* _ASM_POWERPC_BOOK3S_32_MMU_HASH_H_ */ diff --git a/arch/powerpc/include/asm/book3s/32/pgalloc.h b/arch/powerpc/include/asm/book3s/32/pgalloc.h new file mode 100644 index 000000000000..a2350194fc76 --- /dev/null +++ b/arch/powerpc/include/asm/book3s/32/pgalloc.h @@ -0,0 +1,109 @@ +#ifndef _ASM_POWERPC_BOOK3S_32_PGALLOC_H +#define _ASM_POWERPC_BOOK3S_32_PGALLOC_H + +#include <linux/threads.h> + +/* For 32-bit, all levels of page tables are just drawn from get_free_page() */ +#define MAX_PGTABLE_INDEX_SIZE 0 + +extern void __bad_pte(pmd_t *pmd); + +extern pgd_t *pgd_alloc(struct mm_struct *mm); +extern void pgd_free(struct mm_struct *mm, pgd_t *pgd); + +/* + * We don't have any real pmd's, and this code never triggers because + * the pgd will always be present.. + */ +/* #define pmd_alloc_one(mm,address) ({ BUG(); ((pmd_t *)2); }) */ +#define pmd_free(mm, x) do { } while (0) +#define __pmd_free_tlb(tlb,x,a) do { } while (0) +/* #define pgd_populate(mm, pmd, pte) BUG() */ + +#ifndef CONFIG_BOOKE + +static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, + pte_t *pte) +{ + *pmdp = __pmd(__pa(pte) | _PMD_PRESENT); +} + +static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmdp, + pgtable_t pte_page) +{ + *pmdp = __pmd((page_to_pfn(pte_page) << PAGE_SHIFT) | _PMD_PRESENT); +} + +#define pmd_pgtable(pmd) pmd_page(pmd) +#else + +static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, + pte_t *pte) +{ + *pmdp = __pmd((unsigned long)pte | _PMD_PRESENT); +} + +static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmdp, + pgtable_t pte_page) +{ + *pmdp = __pmd((unsigned long)lowmem_page_address(pte_page) | _PMD_PRESENT); +} + +#define pmd_pgtable(pmd) pmd_page(pmd) +#endif + +extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr); +extern pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long addr); + +static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) +{ + free_page((unsigned long)pte); +} + +static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage) +{ + pgtable_page_dtor(ptepage); + __free_page(ptepage); +} + +static inline void pgtable_free(void *table, unsigned index_size) +{ + BUG_ON(index_size); /* 32-bit doesn't use this */ + free_page((unsigned long)table); +} + +#define check_pgt_cache() do { } while (0) + +#ifdef CONFIG_SMP +static inline void pgtable_free_tlb(struct mmu_gather *tlb, + void *table, int shift) +{ + unsigned long pgf = (unsigned long)table; + BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE); + pgf |= shift; + tlb_remove_table(tlb, (void *)pgf); +} + +static inline void __tlb_remove_table(void *_table) +{ + void *table = (void *)((unsigned long)_table & ~MAX_PGTABLE_INDEX_SIZE); + unsigned shift = (unsigned long)_table & MAX_PGTABLE_INDEX_SIZE; + + pgtable_free(table, shift); +} +#else +static inline void pgtable_free_tlb(struct mmu_gather *tlb, + void *table, int shift) +{ + pgtable_free(table, shift); +} +#endif + +static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table, + unsigned long address) +{ + tlb_flush_pgtable(tlb, address); + pgtable_page_dtor(table); + pgtable_free_tlb(tlb, page_address(table), 0); +} +#endif /* _ASM_POWERPC_BOOK3S_32_PGALLOC_H */ diff --git a/arch/powerpc/include/asm/book3s/64/hash-4k.h b/arch/powerpc/include/asm/book3s/64/hash-4k.h index 5f08a0832238..1af837c561ba 100644 --- a/arch/powerpc/include/asm/book3s/64/hash-4k.h +++ b/arch/powerpc/include/asm/book3s/64/hash-4k.h @@ -5,58 +5,31 @@ * for each page table entry. The PMD and PGD level use a 32b record for * each entry by assuming that each entry is page aligned. */ -#define PTE_INDEX_SIZE 9 -#define PMD_INDEX_SIZE 7 -#define PUD_INDEX_SIZE 9 -#define PGD_INDEX_SIZE 9 +#define H_PTE_INDEX_SIZE 9 +#define H_PMD_INDEX_SIZE 7 +#define H_PUD_INDEX_SIZE 9 +#define H_PGD_INDEX_SIZE 9 #ifndef __ASSEMBLY__ -#define PTE_TABLE_SIZE (sizeof(pte_t) << PTE_INDEX_SIZE) -#define PMD_TABLE_SIZE (sizeof(pmd_t) << PMD_INDEX_SIZE) -#define PUD_TABLE_SIZE (sizeof(pud_t) << PUD_INDEX_SIZE) -#define PGD_TABLE_SIZE (sizeof(pgd_t) << PGD_INDEX_SIZE) -#endif /* __ASSEMBLY__ */ - -#define PTRS_PER_PTE (1 << PTE_INDEX_SIZE) -#define PTRS_PER_PMD (1 << PMD_INDEX_SIZE) -#define PTRS_PER_PUD (1 << PUD_INDEX_SIZE) -#define PTRS_PER_PGD (1 << PGD_INDEX_SIZE) - -/* PMD_SHIFT determines what a second-level page table entry can map */ -#define PMD_SHIFT (PAGE_SHIFT + PTE_INDEX_SIZE) -#define PMD_SIZE (1UL << PMD_SHIFT) -#define PMD_MASK (~(PMD_SIZE-1)) +#define H_PTE_TABLE_SIZE (sizeof(pte_t) << H_PTE_INDEX_SIZE) +#define H_PMD_TABLE_SIZE (sizeof(pmd_t) << H_PMD_INDEX_SIZE) +#define H_PUD_TABLE_SIZE (sizeof(pud_t) << H_PUD_INDEX_SIZE) +#define H_PGD_TABLE_SIZE (sizeof(pgd_t) << H_PGD_INDEX_SIZE) /* With 4k base page size, hugepage PTEs go at the PMD level */ #define MIN_HUGEPTE_SHIFT PMD_SHIFT -/* PUD_SHIFT determines what a third-level page table entry can map */ -#define PUD_SHIFT (PMD_SHIFT + PMD_INDEX_SIZE) -#define PUD_SIZE (1UL << PUD_SHIFT) -#define PUD_MASK (~(PUD_SIZE-1)) - -/* PGDIR_SHIFT determines what a fourth-level page table entry can map */ -#define PGDIR_SHIFT (PUD_SHIFT + PUD_INDEX_SIZE) -#define PGDIR_SIZE (1UL << PGDIR_SHIFT) -#define PGDIR_MASK (~(PGDIR_SIZE-1)) - -/* Bits to mask out from a PMD to get to the PTE page */ -#define PMD_MASKED_BITS 0 -/* Bits to mask out from a PUD to get to the PMD page */ -#define PUD_MASKED_BITS 0 -/* Bits to mask out from a PGD to get to the PUD page */ -#define PGD_MASKED_BITS 0 - /* PTE flags to conserve for HPTE identification */ -#define _PAGE_HPTEFLAGS (_PAGE_BUSY | _PAGE_HASHPTE | \ - _PAGE_F_SECOND | _PAGE_F_GIX) - -/* shift to put page number into pte */ -#define PTE_RPN_SHIFT (12) -#define PTE_RPN_SIZE (45) /* gives 57-bit real addresses */ - -#define _PAGE_4K_PFN 0 -#ifndef __ASSEMBLY__ +#define _PAGE_HPTEFLAGS (H_PAGE_BUSY | H_PAGE_HASHPTE | \ + H_PAGE_F_SECOND | H_PAGE_F_GIX) +/* + * Not supported by 4k linux page size + */ +#define H_PAGE_4K_PFN 0x0 +#define H_PAGE_THP_HUGE 0x0 +#define H_PAGE_COMBO 0x0 +#define H_PTE_FRAG_NR 0 +#define H_PTE_FRAG_SIZE_SHIFT 0 /* * On all 4K setups, remap_4k_pfn() equates to remap_pfn_range() */ @@ -64,37 +37,76 @@ remap_pfn_range((vma), (addr), (pfn), PAGE_SIZE, (prot)) #ifdef CONFIG_HUGETLB_PAGE -/* - * For 4k page size, we support explicit hugepage via hugepd - */ -static inline int pmd_huge(pmd_t pmd) +static inline int hash__hugepd_ok(hugepd_t hpd) +{ + /* + * if it is not a pte and have hugepd shift mask + * set, then it is a hugepd directory pointer + */ + if (!(hpd.pd & _PAGE_PTE) && + ((hpd.pd & HUGEPD_SHIFT_MASK) != 0)) + return true; + return false; +} +#endif + +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + +static inline char *get_hpte_slot_array(pmd_t *pmdp) +{ + BUG(); + return NULL; +} + +static inline unsigned int hpte_valid(unsigned char *hpte_slot_array, int index) { + BUG(); return 0; } -static inline int pud_huge(pud_t pud) +static inline unsigned int hpte_hash_index(unsigned char *hpte_slot_array, + int index) { + BUG(); return 0; } -static inline int pgd_huge(pgd_t pgd) +static inline void mark_hpte_slot_valid(unsigned char *hpte_slot_array, + unsigned int index, unsigned int hidx) +{ + BUG(); +} + +static inline int hash__pmd_trans_huge(pmd_t pmd) { return 0; } -#define pgd_huge pgd_huge -static inline int hugepd_ok(hugepd_t hpd) +static inline int hash__pmd_same(pmd_t pmd_a, pmd_t pmd_b) { - /* - * if it is not a pte and have hugepd shift mask - * set, then it is a hugepd directory pointer - */ - if (!(hpd.pd & _PAGE_PTE) && - ((hpd.pd & HUGEPD_SHIFT_MASK) != 0)) - return true; - return false; + BUG(); + return 0; } -#define is_hugepd(hpd) (hugepd_ok(hpd)) + +static inline pmd_t hash__pmd_mkhuge(pmd_t pmd) +{ + BUG(); + return pmd; +} + +extern unsigned long hash__pmd_hugepage_update(struct mm_struct *mm, + unsigned long addr, pmd_t *pmdp, + unsigned long clr, unsigned long set); +extern pmd_t hash__pmdp_collapse_flush(struct vm_area_struct *vma, + unsigned long address, pmd_t *pmdp); +extern void hash__pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp, + pgtable_t pgtable); +extern pgtable_t hash__pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp); +extern void hash__pmdp_huge_split_prepare(struct vm_area_struct *vma, + unsigned long address, pmd_t *pmdp); +extern pmd_t hash__pmdp_huge_get_and_clear(struct mm_struct *mm, + unsigned long addr, pmd_t *pmdp); +extern int hash__has_transparent_hugepage(void); #endif #endif /* !__ASSEMBLY__ */ diff --git a/arch/powerpc/include/asm/book3s/64/hash-64k.h b/arch/powerpc/include/asm/book3s/64/hash-64k.h index 0a7956a80a08..5aae4f530c21 100644 --- a/arch/powerpc/include/asm/book3s/64/hash-64k.h +++ b/arch/powerpc/include/asm/book3s/64/hash-64k.h @@ -1,73 +1,44 @@ #ifndef _ASM_POWERPC_BOOK3S_64_HASH_64K_H #define _ASM_POWERPC_BOOK3S_64_HASH_64K_H -#define PTE_INDEX_SIZE 8 -#define PMD_INDEX_SIZE 5 -#define PUD_INDEX_SIZE 5 -#define PGD_INDEX_SIZE 12 - -#define PTRS_PER_PTE (1 << PTE_INDEX_SIZE) -#define PTRS_PER_PMD (1 << PMD_INDEX_SIZE) -#define PTRS_PER_PUD (1 << PUD_INDEX_SIZE) -#define PTRS_PER_PGD (1 << PGD_INDEX_SIZE) +#define H_PTE_INDEX_SIZE 8 +#define H_PMD_INDEX_SIZE 5 +#define H_PUD_INDEX_SIZE 5 +#define H_PGD_INDEX_SIZE 12 /* With 4k base page size, hugepage PTEs go at the PMD level */ #define MIN_HUGEPTE_SHIFT PAGE_SHIFT -/* PMD_SHIFT determines what a second-level page table entry can map */ -#define PMD_SHIFT (PAGE_SHIFT + PTE_INDEX_SIZE) -#define PMD_SIZE (1UL << PMD_SHIFT) -#define PMD_MASK (~(PMD_SIZE-1)) - -/* PUD_SHIFT determines what a third-level page table entry can map */ -#define PUD_SHIFT (PMD_SHIFT + PMD_INDEX_SIZE) -#define PUD_SIZE (1UL << PUD_SHIFT) -#define PUD_MASK (~(PUD_SIZE-1)) - -/* PGDIR_SHIFT determines what a fourth-level page table entry can map */ -#define PGDIR_SHIFT (PUD_SHIFT + PUD_INDEX_SIZE) -#define PGDIR_SIZE (1UL << PGDIR_SHIFT) -#define PGDIR_MASK (~(PGDIR_SIZE-1)) - -#define _PAGE_COMBO 0x00001000 /* this is a combo 4k page */ -#define _PAGE_4K_PFN 0x00002000 /* PFN is for a single 4k page */ +#define H_PAGE_COMBO 0x00001000 /* this is a combo 4k page */ +#define H_PAGE_4K_PFN 0x00002000 /* PFN is for a single 4k page */ /* - * Used to track subpage group valid if _PAGE_COMBO is set - * This overloads _PAGE_F_GIX and _PAGE_F_SECOND + * We need to differentiate between explicit huge page and THP huge + * page, since THP huge page also need to track real subpage details */ -#define _PAGE_COMBO_VALID (_PAGE_F_GIX | _PAGE_F_SECOND) +#define H_PAGE_THP_HUGE H_PAGE_4K_PFN -/* PTE flags to conserve for HPTE identification */ -#define _PAGE_HPTEFLAGS (_PAGE_BUSY | _PAGE_F_SECOND | \ - _PAGE_F_GIX | _PAGE_HASHPTE | _PAGE_COMBO) - -/* Shift to put page number into pte. - * - * That gives us a max RPN of 41 bits, which means a max of 57 bits - * of addressable physical space, or 53 bits for the special 4k PFNs. +/* + * Used to track subpage group valid if H_PAGE_COMBO is set + * This overloads H_PAGE_F_GIX and H_PAGE_F_SECOND */ -#define PTE_RPN_SHIFT (16) -#define PTE_RPN_SIZE (41) +#define H_PAGE_COMBO_VALID (H_PAGE_F_GIX | H_PAGE_F_SECOND) +/* PTE flags to conserve for HPTE identification */ +#define _PAGE_HPTEFLAGS (H_PAGE_BUSY | H_PAGE_F_SECOND | \ + H_PAGE_F_GIX | H_PAGE_HASHPTE | H_PAGE_COMBO) /* * we support 16 fragments per PTE page of 64K size. */ -#define PTE_FRAG_NR 16 +#define H_PTE_FRAG_NR 16 /* * We use a 2K PTE page fragment and another 2K for storing * real_pte_t hash index */ -#define PTE_FRAG_SIZE_SHIFT 12 +#define H_PTE_FRAG_SIZE_SHIFT 12 #define PTE_FRAG_SIZE (1UL << PTE_FRAG_SIZE_SHIFT) -/* Bits to mask out from a PMD to get to the PTE page */ -#define PMD_MASKED_BITS 0xc0000000000000ffUL -/* Bits to mask out from a PUD to get to the PMD page */ -#define PUD_MASKED_BITS 0xc0000000000000ffUL -/* Bits to mask out from a PGD to get to the PUD page */ -#define PGD_MASKED_BITS 0xc0000000000000ffUL - #ifndef __ASSEMBLY__ +#include <asm/errno.h> /* * With 64K pages on hash table, we have a special PTE format that @@ -83,9 +54,9 @@ static inline real_pte_t __real_pte(pte_t pte, pte_t *ptep) rpte.pte = pte; rpte.hidx = 0; - if (pte_val(pte) & _PAGE_COMBO) { + if (pte_val(pte) & H_PAGE_COMBO) { /* - * Make sure we order the hidx load against the _PAGE_COMBO + * Make sure we order the hidx load against the H_PAGE_COMBO * check. The store side ordering is done in __hash_page_4K */ smp_rmb(); @@ -97,9 +68,9 @@ static inline real_pte_t __real_pte(pte_t pte, pte_t *ptep) static inline unsigned long __rpte_to_hidx(real_pte_t rpte, unsigned long index) { - if ((pte_val(rpte.pte) & _PAGE_COMBO)) + if ((pte_val(rpte.pte) & H_PAGE_COMBO)) return (rpte.hidx >> (index<<2)) & 0xf; - return (pte_val(rpte.pte) >> _PAGE_F_GIX_SHIFT) & 0xf; + return (pte_val(rpte.pte) >> H_PAGE_F_GIX_SHIFT) & 0xf; } #define __rpte_to_pte(r) ((r).pte) @@ -122,79 +93,32 @@ extern bool __rpte_sub_valid(real_pte_t rpte, unsigned long index); #define pte_iterate_hashed_end() } while(0); } } while(0) #define pte_pagesize_index(mm, addr, pte) \ - (((pte) & _PAGE_COMBO)? MMU_PAGE_4K: MMU_PAGE_64K) - -#define remap_4k_pfn(vma, addr, pfn, prot) \ - (WARN_ON(((pfn) >= (1UL << PTE_RPN_SIZE))) ? -EINVAL : \ - remap_pfn_range((vma), (addr), (pfn), PAGE_SIZE, \ - __pgprot(pgprot_val((prot)) | _PAGE_4K_PFN))) - -#define PTE_TABLE_SIZE PTE_FRAG_SIZE -#ifdef CONFIG_TRANSPARENT_HUGEPAGE -#define PMD_TABLE_SIZE ((sizeof(pmd_t) << PMD_INDEX_SIZE) + (sizeof(unsigned long) << PMD_INDEX_SIZE)) -#else -#define PMD_TABLE_SIZE (sizeof(pmd_t) << PMD_INDEX_SIZE) -#endif -#define PUD_TABLE_SIZE (sizeof(pud_t) << PUD_INDEX_SIZE) -#define PGD_TABLE_SIZE (sizeof(pgd_t) << PGD_INDEX_SIZE) - -#ifdef CONFIG_HUGETLB_PAGE -/* - * We have PGD_INDEX_SIZ = 12 and PTE_INDEX_SIZE = 8, so that we can have - * 16GB hugepage pte in PGD and 16MB hugepage pte at PMD; - * - * Defined in such a way that we can optimize away code block at build time - * if CONFIG_HUGETLB_PAGE=n. - */ -static inline int pmd_huge(pmd_t pmd) -{ - /* - * leaf pte for huge page - */ - return !!(pmd_val(pmd) & _PAGE_PTE); -} - -static inline int pud_huge(pud_t pud) -{ - /* - * leaf pte for huge page - */ - return !!(pud_val(pud) & _PAGE_PTE); -} + (((pte) & H_PAGE_COMBO)? MMU_PAGE_4K: MMU_PAGE_64K) -static inline int pgd_huge(pgd_t pgd) +extern int remap_pfn_range(struct vm_area_struct *, unsigned long addr, + unsigned long pfn, unsigned long size, pgprot_t); +static inline int hash__remap_4k_pfn(struct vm_area_struct *vma, unsigned long addr, + unsigned long pfn, pgprot_t prot) { - /* - * leaf pte for huge page - */ - return !!(pgd_val(pgd) & _PAGE_PTE); + if (pfn > (PTE_RPN_MASK >> PAGE_SHIFT)) { + WARN(1, "remap_4k_pfn called with wrong pfn value\n"); + return -EINVAL; + } + return remap_pfn_range(vma, addr, pfn, PAGE_SIZE, + __pgprot(pgprot_val(prot) | H_PAGE_4K_PFN)); } -#define pgd_huge pgd_huge -#ifdef CONFIG_DEBUG_VM -extern int hugepd_ok(hugepd_t hpd); -#define is_hugepd(hpd) (hugepd_ok(hpd)) +#define H_PTE_TABLE_SIZE PTE_FRAG_SIZE +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +#define H_PMD_TABLE_SIZE ((sizeof(pmd_t) << PMD_INDEX_SIZE) + \ + (sizeof(unsigned long) << PMD_INDEX_SIZE)) #else -/* - * With 64k page size, we have hugepage ptes in the pgd and pmd entries. We don't - * need to setup hugepage directory for them. Our pte and page directory format - * enable us to have this enabled. - */ -static inline int hugepd_ok(hugepd_t hpd) -{ - return 0; -} -#define is_hugepd(pdep) 0 -#endif /* CONFIG_DEBUG_VM */ - -#endif /* CONFIG_HUGETLB_PAGE */ +#define H_PMD_TABLE_SIZE (sizeof(pmd_t) << PMD_INDEX_SIZE) +#endif +#define H_PUD_TABLE_SIZE (sizeof(pud_t) << PUD_INDEX_SIZE) +#define H_PGD_TABLE_SIZE (sizeof(pgd_t) << PGD_INDEX_SIZE) #ifdef CONFIG_TRANSPARENT_HUGEPAGE -extern unsigned long pmd_hugepage_update(struct mm_struct *mm, - unsigned long addr, - pmd_t *pmdp, - unsigned long clr, - unsigned long set); static inline char *get_hpte_slot_array(pmd_t *pmdp) { /* @@ -253,50 +177,35 @@ static inline void mark_hpte_slot_valid(unsigned char *hpte_slot_array, * that for explicit huge pages. * */ -static inline int pmd_trans_huge(pmd_t pmd) +static inline int hash__pmd_trans_huge(pmd_t pmd) { - return !!((pmd_val(pmd) & (_PAGE_PTE | _PAGE_THP_HUGE)) == - (_PAGE_PTE | _PAGE_THP_HUGE)); + return !!((pmd_val(pmd) & (_PAGE_PTE | H_PAGE_THP_HUGE)) == + (_PAGE_PTE | H_PAGE_THP_HUGE)); } -static inline int pmd_large(pmd_t pmd) +static inline int hash__pmd_same(pmd_t pmd_a, pmd_t pmd_b) { - return !!(pmd_val(pmd) & _PAGE_PTE); + return (((pmd_raw(pmd_a) ^ pmd_raw(pmd_b)) & ~cpu_to_be64(_PAGE_HPTEFLAGS)) == 0); } -static inline pmd_t pmd_mknotpresent(pmd_t pmd) +static inline pmd_t hash__pmd_mkhuge(pmd_t pmd) { - return __pmd(pmd_val(pmd) & ~_PAGE_PRESENT); -} - -#define __HAVE_ARCH_PMD_SAME -static inline int pmd_same(pmd_t pmd_a, pmd_t pmd_b) -{ - return (((pmd_val(pmd_a) ^ pmd_val(pmd_b)) & ~_PAGE_HPTEFLAGS) == 0); -} - -static inline int __pmdp_test_and_clear_young(struct mm_struct *mm, - unsigned long addr, pmd_t *pmdp) -{ - unsigned long old; - - if ((pmd_val(*pmdp) & (_PAGE_ACCESSED | _PAGE_HASHPTE)) == 0) - return 0; - old = pmd_hugepage_update(mm, addr, pmdp, _PAGE_ACCESSED, 0); - return ((old & _PAGE_ACCESSED) != 0); -} - -#define __HAVE_ARCH_PMDP_SET_WRPROTECT -static inline void pmdp_set_wrprotect(struct mm_struct *mm, unsigned long addr, - pmd_t *pmdp) -{ - - if ((pmd_val(*pmdp) & _PAGE_RW) == 0) - return; - - pmd_hugepage_update(mm, addr, pmdp, _PAGE_RW, 0); + return __pmd(pmd_val(pmd) | (_PAGE_PTE | H_PAGE_THP_HUGE)); } +extern unsigned long hash__pmd_hugepage_update(struct mm_struct *mm, + unsigned long addr, pmd_t *pmdp, + unsigned long clr, unsigned long set); +extern pmd_t hash__pmdp_collapse_flush(struct vm_area_struct *vma, + unsigned long address, pmd_t *pmdp); +extern void hash__pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp, + pgtable_t pgtable); +extern pgtable_t hash__pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp); +extern void hash__pmdp_huge_split_prepare(struct vm_area_struct *vma, + unsigned long address, pmd_t *pmdp); +extern pmd_t hash__pmdp_huge_get_and_clear(struct mm_struct *mm, + unsigned long addr, pmd_t *pmdp); +extern int hash__has_transparent_hugepage(void); #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ #endif /* __ASSEMBLY__ */ diff --git a/arch/powerpc/include/asm/book3s/64/hash.h b/arch/powerpc/include/asm/book3s/64/hash.h index d0ee6fcef823..f61cad3de4e6 100644 --- a/arch/powerpc/include/asm/book3s/64/hash.h +++ b/arch/powerpc/include/asm/book3s/64/hash.h @@ -13,48 +13,12 @@ * We could create separate kernel read-only if we used the 3 PP bits * combinations that newer processors provide but we currently don't. */ -#define _PAGE_BIT_SWAP_TYPE 0 - -#define _PAGE_EXEC 0x00001 /* execute permission */ -#define _PAGE_RW 0x00002 /* read & write access allowed */ -#define _PAGE_READ 0x00004 /* read access allowed */ -#define _PAGE_USER 0x00008 /* page may be accessed by userspace */ -#define _PAGE_GUARDED 0x00010 /* G: guarded (side-effect) page */ -/* M (memory coherence) is always set in the HPTE, so we don't need it here */ -#define _PAGE_COHERENT 0x0 -#define _PAGE_NO_CACHE 0x00020 /* I: cache inhibit */ -#define _PAGE_WRITETHRU 0x00040 /* W: cache write-through */ -#define _PAGE_DIRTY 0x00080 /* C: page changed */ -#define _PAGE_ACCESSED 0x00100 /* R: page referenced */ -#define _PAGE_SPECIAL 0x00400 /* software: special page */ -#define _PAGE_BUSY 0x00800 /* software: PTE & hash are busy */ - -#ifdef CONFIG_MEM_SOFT_DIRTY -#define _PAGE_SOFT_DIRTY 0x200 /* software: software dirty tracking */ -#else -#define _PAGE_SOFT_DIRTY 0x000 -#endif - -#define _PAGE_F_GIX_SHIFT 57 -#define _PAGE_F_GIX (7ul << 57) /* HPTE index within HPTEG */ -#define _PAGE_F_SECOND (1ul << 60) /* HPTE is in 2ndary HPTEG */ -#define _PAGE_HASHPTE (1ul << 61) /* PTE has associated HPTE */ -#define _PAGE_PTE (1ul << 62) /* distinguishes PTEs from pointers */ -#define _PAGE_PRESENT (1ul << 63) /* pte contains a translation */ - -/* - * We need to differentiate between explicit huge page and THP huge - * page, since THP huge page also need to track real subpage details - */ -#define _PAGE_THP_HUGE _PAGE_4K_PFN - -/* - * set of bits not changed in pmd_modify. - */ -#define _HPAGE_CHG_MASK (PTE_RPN_MASK | _PAGE_HPTEFLAGS | _PAGE_DIRTY | \ - _PAGE_ACCESSED | _PAGE_THP_HUGE | _PAGE_PTE | \ - _PAGE_SOFT_DIRTY) - +#define H_PAGE_BUSY 0x00800 /* software: PTE & hash are busy */ +#define H_PTE_NONE_MASK _PAGE_HPTEFLAGS +#define H_PAGE_F_GIX_SHIFT 57 +#define H_PAGE_F_GIX (7ul << 57) /* HPTE index within HPTEG */ +#define H_PAGE_F_SECOND (1ul << 60) /* HPTE is in 2ndary HPTEG */ +#define H_PAGE_HASHPTE (1ul << 61) /* PTE has associated HPTE */ #ifdef CONFIG_PPC_64K_PAGES #include <asm/book3s/64/hash-64k.h> @@ -65,29 +29,33 @@ /* * Size of EA range mapped by our pagetables. */ -#define PGTABLE_EADDR_SIZE (PTE_INDEX_SIZE + PMD_INDEX_SIZE + \ - PUD_INDEX_SIZE + PGD_INDEX_SIZE + PAGE_SHIFT) -#define PGTABLE_RANGE (ASM_CONST(1) << PGTABLE_EADDR_SIZE) +#define H_PGTABLE_EADDR_SIZE (H_PTE_INDEX_SIZE + H_PMD_INDEX_SIZE + \ + H_PUD_INDEX_SIZE + H_PGD_INDEX_SIZE + PAGE_SHIFT) +#define H_PGTABLE_RANGE (ASM_CONST(1) << H_PGTABLE_EADDR_SIZE) #ifdef CONFIG_TRANSPARENT_HUGEPAGE -#define PMD_CACHE_INDEX (PMD_INDEX_SIZE + 1) +/* + * only with hash we need to use the second half of pmd page table + * to store pointer to deposited pgtable_t + */ +#define H_PMD_CACHE_INDEX (H_PMD_INDEX_SIZE + 1) #else -#define PMD_CACHE_INDEX PMD_INDEX_SIZE +#define H_PMD_CACHE_INDEX H_PMD_INDEX_SIZE #endif /* * Define the address range of the kernel non-linear virtual area */ -#define KERN_VIRT_START ASM_CONST(0xD000000000000000) -#define KERN_VIRT_SIZE ASM_CONST(0x0000100000000000) +#define H_KERN_VIRT_START ASM_CONST(0xD000000000000000) +#define H_KERN_VIRT_SIZE ASM_CONST(0x0000100000000000) /* * The vmalloc space starts at the beginning of that region, and * occupies half of it on hash CPUs and a quarter of it on Book3E * (we keep a quarter for the virtual memmap) */ -#define VMALLOC_START KERN_VIRT_START -#define VMALLOC_SIZE (KERN_VIRT_SIZE >> 1) -#define VMALLOC_END (VMALLOC_START + VMALLOC_SIZE) +#define H_VMALLOC_START H_KERN_VIRT_START +#define H_VMALLOC_SIZE (H_KERN_VIRT_SIZE >> 1) +#define H_VMALLOC_END (H_VMALLOC_START + H_VMALLOC_SIZE) /* * Region IDs @@ -96,7 +64,7 @@ #define REGION_MASK (0xfUL << REGION_SHIFT) #define REGION_ID(ea) (((unsigned long)(ea)) >> REGION_SHIFT) -#define VMALLOC_REGION_ID (REGION_ID(VMALLOC_START)) +#define VMALLOC_REGION_ID (REGION_ID(H_VMALLOC_START)) #define KERNEL_REGION_ID (REGION_ID(PAGE_OFFSET)) #define VMEMMAP_REGION_ID (0xfUL) /* Server only */ #define USER_REGION_ID (0UL) @@ -105,381 +73,97 @@ * Defines the address of the vmemap area, in its own region on * hash table CPUs. */ -#define VMEMMAP_BASE (VMEMMAP_REGION_ID << REGION_SHIFT) +#define H_VMEMMAP_BASE (VMEMMAP_REGION_ID << REGION_SHIFT) #ifdef CONFIG_PPC_MM_SLICES #define HAVE_ARCH_UNMAPPED_AREA #define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN #endif /* CONFIG_PPC_MM_SLICES */ -/* No separate kernel read-only */ -#define _PAGE_KERNEL_RW (_PAGE_RW | _PAGE_DIRTY) /* user access blocked by key */ -#define _PAGE_KERNEL_RO _PAGE_KERNEL_RW -#define _PAGE_KERNEL_RWX (_PAGE_DIRTY | _PAGE_RW | _PAGE_EXEC) - -/* Strong Access Ordering */ -#define _PAGE_SAO (_PAGE_WRITETHRU | _PAGE_NO_CACHE | _PAGE_COHERENT) - -/* No page size encoding in the linux PTE */ -#define _PAGE_PSIZE 0 /* PTEIDX nibble */ #define _PTEIDX_SECONDARY 0x8 #define _PTEIDX_GROUP_IX 0x7 -/* Hash table based platforms need atomic updates of the linux PTE */ -#define PTE_ATOMIC_UPDATES 1 -#define _PTE_NONE_MASK _PAGE_HPTEFLAGS -/* - * The mask convered by the RPN must be a ULL on 32-bit platforms with - * 64-bit PTEs - */ -#define PTE_RPN_MASK (((1UL << PTE_RPN_SIZE) - 1) << PTE_RPN_SHIFT) -/* - * _PAGE_CHG_MASK masks of bits that are to be preserved across - * pgprot changes - */ -#define _PAGE_CHG_MASK (PTE_RPN_MASK | _PAGE_HPTEFLAGS | _PAGE_DIRTY | \ - _PAGE_ACCESSED | _PAGE_SPECIAL | _PAGE_PTE | \ - _PAGE_SOFT_DIRTY) -/* - * Mask of bits returned by pte_pgprot() - */ -#define PAGE_PROT_BITS (_PAGE_GUARDED | _PAGE_COHERENT | _PAGE_NO_CACHE | \ - _PAGE_WRITETHRU | _PAGE_4K_PFN | \ - _PAGE_USER | _PAGE_ACCESSED | \ - _PAGE_RW | _PAGE_DIRTY | _PAGE_EXEC | \ - _PAGE_SOFT_DIRTY) -/* - * We define 2 sets of base prot bits, one for basic pages (ie, - * cacheable kernel and user pages) and one for non cacheable - * pages. We always set _PAGE_COHERENT when SMP is enabled or - * the processor might need it for DMA coherency. - */ -#define _PAGE_BASE_NC (_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_PSIZE) -#define _PAGE_BASE (_PAGE_BASE_NC | _PAGE_COHERENT) - -/* Permission masks used to generate the __P and __S table, - * - * Note:__pgprot is defined in arch/powerpc/include/asm/page.h - * - * Write permissions imply read permissions for now (we could make write-only - * pages on BookE but we don't bother for now). Execute permission control is - * possible on platforms that define _PAGE_EXEC - * - * Note due to the way vm flags are laid out, the bits are XWR - */ -#define PAGE_NONE __pgprot(_PAGE_BASE) -#define PAGE_SHARED __pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_RW) -#define PAGE_SHARED_X __pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_RW | \ - _PAGE_EXEC) -#define PAGE_COPY __pgprot(_PAGE_BASE | _PAGE_USER ) -#define PAGE_COPY_X __pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_EXEC) -#define PAGE_READONLY __pgprot(_PAGE_BASE | _PAGE_USER ) -#define PAGE_READONLY_X __pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_EXEC) - -#define __P000 PAGE_NONE -#define __P001 PAGE_READONLY -#define __P010 PAGE_COPY -#define __P011 PAGE_COPY -#define __P100 PAGE_READONLY_X -#define __P101 PAGE_READONLY_X -#define __P110 PAGE_COPY_X -#define __P111 PAGE_COPY_X - -#define __S000 PAGE_NONE -#define __S001 PAGE_READONLY -#define __S010 PAGE_SHARED -#define __S011 PAGE_SHARED -#define __S100 PAGE_READONLY_X -#define __S101 PAGE_READONLY_X -#define __S110 PAGE_SHARED_X -#define __S111 PAGE_SHARED_X - -/* Permission masks used for kernel mappings */ -#define PAGE_KERNEL __pgprot(_PAGE_BASE | _PAGE_KERNEL_RW) -#define PAGE_KERNEL_NC __pgprot(_PAGE_BASE_NC | _PAGE_KERNEL_RW | \ - _PAGE_NO_CACHE) -#define PAGE_KERNEL_NCG __pgprot(_PAGE_BASE_NC | _PAGE_KERNEL_RW | \ - _PAGE_NO_CACHE | _PAGE_GUARDED) -#define PAGE_KERNEL_X __pgprot(_PAGE_BASE | _PAGE_KERNEL_RWX) -#define PAGE_KERNEL_RO __pgprot(_PAGE_BASE | _PAGE_KERNEL_RO) -#define PAGE_KERNEL_ROX __pgprot(_PAGE_BASE | _PAGE_KERNEL_ROX) - -/* Protection used for kernel text. We want the debuggers to be able to - * set breakpoints anywhere, so don't write protect the kernel text - * on platforms where such control is possible. - */ -#if defined(CONFIG_KGDB) || defined(CONFIG_XMON) || defined(CONFIG_BDI_SWITCH) ||\ - defined(CONFIG_KPROBES) || defined(CONFIG_DYNAMIC_FTRACE) -#define PAGE_KERNEL_TEXT PAGE_KERNEL_X -#else -#define PAGE_KERNEL_TEXT PAGE_KERNEL_ROX -#endif - -/* Make modules code happy. We don't set RO yet */ -#define PAGE_KERNEL_EXEC PAGE_KERNEL_X -#define PAGE_AGP (PAGE_KERNEL_NC) - -#define PMD_BAD_BITS (PTE_TABLE_SIZE-1) -#define PUD_BAD_BITS (PMD_TABLE_SIZE-1) +#define H_PMD_BAD_BITS (PTE_TABLE_SIZE-1) +#define H_PUD_BAD_BITS (PMD_TABLE_SIZE-1) #ifndef __ASSEMBLY__ -#define pmd_bad(pmd) (pmd_val(pmd) & PMD_BAD_BITS) -#define pmd_page_vaddr(pmd) __va(pmd_val(pmd) & ~PMD_MASKED_BITS) - -#define pud_bad(pud) (pud_val(pud) & PUD_BAD_BITS) -#define pud_page_vaddr(pud) __va(pud_val(pud) & ~PUD_MASKED_BITS) - -/* Pointers in the page table tree are physical addresses */ -#define __pgtable_ptr_val(ptr) __pa(ptr) - -#define pgd_index(address) (((address) >> (PGDIR_SHIFT)) & (PTRS_PER_PGD - 1)) -#define pud_index(address) (((address) >> (PUD_SHIFT)) & (PTRS_PER_PUD - 1)) -#define pmd_index(address) (((address) >> (PMD_SHIFT)) & (PTRS_PER_PMD - 1)) -#define pte_index(address) (((address) >> (PAGE_SHIFT)) & (PTRS_PER_PTE - 1)) +#define hash__pmd_bad(pmd) (pmd_val(pmd) & H_PMD_BAD_BITS) +#define hash__pud_bad(pud) (pud_val(pud) & H_PUD_BAD_BITS) +static inline int hash__pgd_bad(pgd_t pgd) +{ + return (pgd_val(pgd) == 0); +} extern void hpte_need_flush(struct mm_struct *mm, unsigned long addr, pte_t *ptep, unsigned long pte, int huge); extern unsigned long htab_convert_pte_flags(unsigned long pteflags); /* Atomic PTE updates */ -static inline unsigned long pte_update(struct mm_struct *mm, - unsigned long addr, - pte_t *ptep, unsigned long clr, - unsigned long set, - int huge) +static inline unsigned long hash__pte_update(struct mm_struct *mm, + unsigned long addr, + pte_t *ptep, unsigned long clr, + unsigned long set, + int huge) { - unsigned long old, tmp; + __be64 old_be, tmp_be; + unsigned long old; __asm__ __volatile__( "1: ldarx %0,0,%3 # pte_update\n\ - andi. %1,%0,%6\n\ + and. %1,%0,%6\n\ bne- 1b \n\ andc %1,%0,%4 \n\ or %1,%1,%7\n\ stdcx. %1,0,%3 \n\ bne- 1b" - : "=&r" (old), "=&r" (tmp), "=m" (*ptep) - : "r" (ptep), "r" (clr), "m" (*ptep), "i" (_PAGE_BUSY), "r" (set) + : "=&r" (old_be), "=&r" (tmp_be), "=m" (*ptep) + : "r" (ptep), "r" (cpu_to_be64(clr)), "m" (*ptep), + "r" (cpu_to_be64(H_PAGE_BUSY)), "r" (cpu_to_be64(set)) : "cc" ); /* huge pages use the old page table lock */ if (!huge) assert_pte_locked(mm, addr); - if (old & _PAGE_HASHPTE) + old = be64_to_cpu(old_be); + if (old & H_PAGE_HASHPTE) hpte_need_flush(mm, addr, ptep, old, huge); return old; } -static inline int __ptep_test_and_clear_young(struct mm_struct *mm, - unsigned long addr, pte_t *ptep) -{ - unsigned long old; - - if ((pte_val(*ptep) & (_PAGE_ACCESSED | _PAGE_HASHPTE)) == 0) - return 0; - old = pte_update(mm, addr, ptep, _PAGE_ACCESSED, 0, 0); - return (old & _PAGE_ACCESSED) != 0; -} -#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG -#define ptep_test_and_clear_young(__vma, __addr, __ptep) \ -({ \ - int __r; \ - __r = __ptep_test_and_clear_young((__vma)->vm_mm, __addr, __ptep); \ - __r; \ -}) - -#define __HAVE_ARCH_PTEP_SET_WRPROTECT -static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, - pte_t *ptep) -{ - - if ((pte_val(*ptep) & _PAGE_RW) == 0) - return; - - pte_update(mm, addr, ptep, _PAGE_RW, 0, 0); -} - -static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, - unsigned long addr, pte_t *ptep) -{ - if ((pte_val(*ptep) & _PAGE_RW) == 0) - return; - - pte_update(mm, addr, ptep, _PAGE_RW, 0, 1); -} - -/* - * We currently remove entries from the hashtable regardless of whether - * the entry was young or dirty. The generic routines only flush if the - * entry was young or dirty which is not good enough. - * - * We should be more intelligent about this but for the moment we override - * these functions and force a tlb flush unconditionally - */ -#define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH -#define ptep_clear_flush_young(__vma, __address, __ptep) \ -({ \ - int __young = __ptep_test_and_clear_young((__vma)->vm_mm, __address, \ - __ptep); \ - __young; \ -}) - -#define __HAVE_ARCH_PTEP_GET_AND_CLEAR -static inline pte_t ptep_get_and_clear(struct mm_struct *mm, - unsigned long addr, pte_t *ptep) -{ - unsigned long old = pte_update(mm, addr, ptep, ~0UL, 0, 0); - return __pte(old); -} - -static inline void pte_clear(struct mm_struct *mm, unsigned long addr, - pte_t * ptep) -{ - pte_update(mm, addr, ptep, ~0UL, 0, 0); -} - - /* Set the dirty and/or accessed bits atomically in a linux PTE, this * function doesn't need to flush the hash entry */ -static inline void __ptep_set_access_flags(pte_t *ptep, pte_t entry) +static inline void hash__ptep_set_access_flags(pte_t *ptep, pte_t entry) { - unsigned long bits = pte_val(entry) & - (_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC | - _PAGE_SOFT_DIRTY); + __be64 old, tmp, val, mask; - unsigned long old, tmp; + mask = cpu_to_be64(_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_READ | _PAGE_WRITE | + _PAGE_EXEC | _PAGE_SOFT_DIRTY); + + val = pte_raw(entry) & mask; __asm__ __volatile__( "1: ldarx %0,0,%4\n\ - andi. %1,%0,%6\n\ + and. %1,%0,%6\n\ bne- 1b \n\ or %0,%3,%0\n\ stdcx. %0,0,%4\n\ bne- 1b" :"=&r" (old), "=&r" (tmp), "=m" (*ptep) - :"r" (bits), "r" (ptep), "m" (*ptep), "i" (_PAGE_BUSY) + :"r" (val), "r" (ptep), "m" (*ptep), "r" (cpu_to_be64(H_PAGE_BUSY)) :"cc"); } -static inline int pgd_bad(pgd_t pgd) -{ - return (pgd_val(pgd) == 0); -} - -#define __HAVE_ARCH_PTE_SAME -#define pte_same(A,B) (((pte_val(A) ^ pte_val(B)) & ~_PAGE_HPTEFLAGS) == 0) -static inline unsigned long pgd_page_vaddr(pgd_t pgd) -{ - return (unsigned long)__va(pgd_val(pgd) & ~PGD_MASKED_BITS); -} - - -/* Generic accessors to PTE bits */ -static inline int pte_write(pte_t pte) { return !!(pte_val(pte) & _PAGE_RW);} -static inline int pte_dirty(pte_t pte) { return !!(pte_val(pte) & _PAGE_DIRTY); } -static inline int pte_young(pte_t pte) { return !!(pte_val(pte) & _PAGE_ACCESSED); } -static inline int pte_special(pte_t pte) { return !!(pte_val(pte) & _PAGE_SPECIAL); } -static inline int pte_none(pte_t pte) { return (pte_val(pte) & ~_PTE_NONE_MASK) == 0; } -static inline pgprot_t pte_pgprot(pte_t pte) { return __pgprot(pte_val(pte) & PAGE_PROT_BITS); } - -#ifdef CONFIG_HAVE_ARCH_SOFT_DIRTY -static inline bool pte_soft_dirty(pte_t pte) -{ - return !!(pte_val(pte) & _PAGE_SOFT_DIRTY); -} -static inline pte_t pte_mksoft_dirty(pte_t pte) -{ - return __pte(pte_val(pte) | _PAGE_SOFT_DIRTY); -} - -static inline pte_t pte_clear_soft_dirty(pte_t pte) -{ - return __pte(pte_val(pte) & ~_PAGE_SOFT_DIRTY); -} -#endif /* CONFIG_HAVE_ARCH_SOFT_DIRTY */ - -#ifdef CONFIG_NUMA_BALANCING -/* - * These work without NUMA balancing but the kernel does not care. See the - * comment in include/asm-generic/pgtable.h . On powerpc, this will only - * work for user pages and always return true for kernel pages. - */ -static inline int pte_protnone(pte_t pte) -{ - return (pte_val(pte) & - (_PAGE_PRESENT | _PAGE_USER)) == _PAGE_PRESENT; -} -#endif /* CONFIG_NUMA_BALANCING */ - -static inline int pte_present(pte_t pte) -{ - return !!(pte_val(pte) & _PAGE_PRESENT); -} - -/* Conversion functions: convert a page and protection to a page entry, - * and a page entry and page directory to the page they refer to. - * - * Even if PTEs can be unsigned long long, a PFN is always an unsigned - * long for now. - */ -static inline pte_t pfn_pte(unsigned long pfn, pgprot_t pgprot) -{ - return __pte((((pte_basic_t)(pfn) << PTE_RPN_SHIFT) & PTE_RPN_MASK) | - pgprot_val(pgprot)); -} - -static inline unsigned long pte_pfn(pte_t pte) -{ - return (pte_val(pte) & PTE_RPN_MASK) >> PTE_RPN_SHIFT; -} - -/* Generic modifiers for PTE bits */ -static inline pte_t pte_wrprotect(pte_t pte) -{ - return __pte(pte_val(pte) & ~_PAGE_RW); -} - -static inline pte_t pte_mkclean(pte_t pte) -{ - return __pte(pte_val(pte) & ~_PAGE_DIRTY); -} - -static inline pte_t pte_mkold(pte_t pte) -{ - return __pte(pte_val(pte) & ~_PAGE_ACCESSED); -} - -static inline pte_t pte_mkwrite(pte_t pte) -{ - return __pte(pte_val(pte) | _PAGE_RW); -} - -static inline pte_t pte_mkdirty(pte_t pte) +static inline int hash__pte_same(pte_t pte_a, pte_t pte_b) { - return __pte(pte_val(pte) | _PAGE_DIRTY | _PAGE_SOFT_DIRTY); + return (((pte_raw(pte_a) ^ pte_raw(pte_b)) & ~cpu_to_be64(_PAGE_HPTEFLAGS)) == 0); } -static inline pte_t pte_mkyoung(pte_t pte) +static inline int hash__pte_none(pte_t pte) { - return __pte(pte_val(pte) | _PAGE_ACCESSED); -} - -static inline pte_t pte_mkspecial(pte_t pte) -{ - return __pte(pte_val(pte) | _PAGE_SPECIAL); -} - -static inline pte_t pte_mkhuge(pte_t pte) -{ - return pte; -} - -static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) -{ - return __pte((pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot)); + return (pte_val(pte) & ~H_PTE_NONE_MASK) == 0; } /* This low level function performs the actual PTE insertion @@ -487,8 +171,8 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) * an horrible mess that I'm not going to try to clean up now but * I'm keeping it in one place rather than spread around */ -static inline void __set_pte_at(struct mm_struct *mm, unsigned long addr, - pte_t *ptep, pte_t pte, int percpu) +static inline void hash__set_pte_at(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t pte, int percpu) { /* * Anything else just stores the PTE normally. That covers all 64-bit @@ -497,53 +181,6 @@ static inline void __set_pte_at(struct mm_struct *mm, unsigned long addr, *ptep = pte; } -/* - * Macro to mark a page protection value as "uncacheable". - */ - -#define _PAGE_CACHE_CTL (_PAGE_COHERENT | _PAGE_GUARDED | _PAGE_NO_CACHE | \ - _PAGE_WRITETHRU) - -#define pgprot_noncached pgprot_noncached -static inline pgprot_t pgprot_noncached(pgprot_t prot) -{ - return __pgprot((pgprot_val(prot) & ~_PAGE_CACHE_CTL) | - _PAGE_NO_CACHE | _PAGE_GUARDED); -} - -#define pgprot_noncached_wc pgprot_noncached_wc -static inline pgprot_t pgprot_noncached_wc(pgprot_t prot) -{ - return __pgprot((pgprot_val(prot) & ~_PAGE_CACHE_CTL) | - _PAGE_NO_CACHE); -} - -#define pgprot_cached pgprot_cached -static inline pgprot_t pgprot_cached(pgprot_t prot) -{ - return __pgprot((pgprot_val(prot) & ~_PAGE_CACHE_CTL) | - _PAGE_COHERENT); -} - -#define pgprot_cached_wthru pgprot_cached_wthru -static inline pgprot_t pgprot_cached_wthru(pgprot_t prot) -{ - return __pgprot((pgprot_val(prot) & ~_PAGE_CACHE_CTL) | - _PAGE_COHERENT | _PAGE_WRITETHRU); -} - -#define pgprot_cached_noncoherent pgprot_cached_noncoherent -static inline pgprot_t pgprot_cached_noncoherent(pgprot_t prot) -{ - return __pgprot(pgprot_val(prot) & ~_PAGE_CACHE_CTL); -} - -#define pgprot_writecombine pgprot_writecombine -static inline pgprot_t pgprot_writecombine(pgprot_t prot) -{ - return pgprot_noncached_wc(prot); -} - #ifdef CONFIG_TRANSPARENT_HUGEPAGE extern void hpte_do_hugepage_flush(struct mm_struct *mm, unsigned long addr, pmd_t *pmdp, unsigned long old_pmd); @@ -556,6 +193,14 @@ static inline void hpte_do_hugepage_flush(struct mm_struct *mm, } #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ + +extern int hash__map_kernel_page(unsigned long ea, unsigned long pa, + unsigned long flags); +extern int __meminit hash__vmemmap_create_mapping(unsigned long start, + unsigned long page_size, + unsigned long phys); +extern void hash__vmemmap_remove_mapping(unsigned long start, + unsigned long page_size); #endif /* !__ASSEMBLY__ */ #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_BOOK3S_64_HASH_H */ diff --git a/arch/powerpc/include/asm/book3s/64/hugetlb-radix.h b/arch/powerpc/include/asm/book3s/64/hugetlb-radix.h new file mode 100644 index 000000000000..60f47649306f --- /dev/null +++ b/arch/powerpc/include/asm/book3s/64/hugetlb-radix.h @@ -0,0 +1,14 @@ +#ifndef _ASM_POWERPC_BOOK3S_64_HUGETLB_RADIX_H +#define _ASM_POWERPC_BOOK3S_64_HUGETLB_RADIX_H +/* + * For radix we want generic code to handle hugetlb. But then if we want + * both hash and radix to be enabled together we need to workaround the + * limitations. + */ +void radix__flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr); +void radix__local_flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr); +extern unsigned long +radix__hugetlb_get_unmapped_area(struct file *file, unsigned long addr, + unsigned long len, unsigned long pgoff, + unsigned long flags); +#endif diff --git a/arch/powerpc/include/asm/book3s/64/mmu-hash.h b/arch/powerpc/include/asm/book3s/64/mmu-hash.h index 0cea4807e26f..290157e8d5b2 100644 --- a/arch/powerpc/include/asm/book3s/64/mmu-hash.h +++ b/arch/powerpc/include/asm/book3s/64/mmu-hash.h @@ -1,5 +1,5 @@ -#ifndef _ASM_POWERPC_MMU_HASH64_H_ -#define _ASM_POWERPC_MMU_HASH64_H_ +#ifndef _ASM_POWERPC_BOOK3S_64_MMU_HASH_H_ +#define _ASM_POWERPC_BOOK3S_64_MMU_HASH_H_ /* * PowerPC64 memory management structures * @@ -78,6 +78,10 @@ #define HPTE_V_SECONDARY ASM_CONST(0x0000000000000002) #define HPTE_V_VALID ASM_CONST(0x0000000000000001) +/* + * ISA 3.0 have a different HPTE format. + */ +#define HPTE_R_3_0_SSIZE_SHIFT 58 #define HPTE_R_PP0 ASM_CONST(0x8000000000000000) #define HPTE_R_TS ASM_CONST(0x4000000000000000) #define HPTE_R_KEY_HI ASM_CONST(0x3000000000000000) @@ -115,6 +119,7 @@ #define POWER7_TLB_SETS 128 /* # sets in POWER7 TLB */ #define POWER8_TLB_SETS 512 /* # sets in POWER8 TLB */ #define POWER9_TLB_SETS_HASH 256 /* # sets in POWER9 TLB Hash mode */ +#define POWER9_TLB_SETS_RADIX 128 /* # sets in POWER9 TLB Radix mode */ #ifndef __ASSEMBLY__ @@ -127,24 +132,6 @@ extern struct hash_pte *htab_address; extern unsigned long htab_size_bytes; extern unsigned long htab_hash_mask; -/* - * Page size definition - * - * shift : is the "PAGE_SHIFT" value for that page size - * sllp : is a bit mask with the value of SLB L || LP to be or'ed - * directly to a slbmte "vsid" value - * penc : is the HPTE encoding mask for the "LP" field: - * - */ -struct mmu_psize_def -{ - unsigned int shift; /* number of bits */ - int penc[MMU_PAGE_COUNT]; /* HPTE encoding */ - unsigned int tlbiel; /* tlbiel supported for that page size */ - unsigned long avpnm; /* bits to mask out in AVPN in the HPTE */ - unsigned long sllp; /* SLB L||LP (exact mask to use in slbmte) */ -}; -extern struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT]; static inline int shift_to_mmu_psize(unsigned int shift) { @@ -210,11 +197,6 @@ static inline int segment_shift(int ssize) /* * The current system page and segment sizes */ -extern int mmu_linear_psize; -extern int mmu_virtual_psize; -extern int mmu_vmalloc_psize; -extern int mmu_vmemmap_psize; -extern int mmu_io_psize; extern int mmu_kernel_ssize; extern int mmu_highuser_ssize; extern u16 mmu_slb_size; @@ -247,7 +229,8 @@ static inline unsigned long hpte_encode_avpn(unsigned long vpn, int psize, */ v = (vpn >> (23 - VPN_SHIFT)) & ~(mmu_psize_defs[psize].avpnm); v <<= HPTE_V_AVPN_SHIFT; - v |= ((unsigned long) ssize) << HPTE_V_SSIZE_SHIFT; + if (!cpu_has_feature(CPU_FTR_ARCH_300)) + v |= ((unsigned long) ssize) << HPTE_V_SSIZE_SHIFT; return v; } @@ -271,8 +254,12 @@ static inline unsigned long hpte_encode_v(unsigned long vpn, int base_psize, * aligned for the requested page size */ static inline unsigned long hpte_encode_r(unsigned long pa, int base_psize, - int actual_psize) + int actual_psize, int ssize) { + + if (cpu_has_feature(CPU_FTR_ARCH_300)) + pa |= ((unsigned long) ssize) << HPTE_R_3_0_SSIZE_SHIFT; + /* A 4K page needs no special encoding */ if (actual_psize == MMU_PAGE_4K) return pa & HPTE_R_RPN; @@ -476,7 +463,7 @@ extern void slb_set_size(u16 size); add rt,rt,rx /* 4 bits per slice and we have one slice per 1TB */ -#define SLICE_ARRAY_SIZE (PGTABLE_RANGE >> 41) +#define SLICE_ARRAY_SIZE (H_PGTABLE_RANGE >> 41) #ifndef __ASSEMBLY__ @@ -512,38 +499,6 @@ static inline void subpage_prot_free(struct mm_struct *mm) {} static inline void subpage_prot_init_new_context(struct mm_struct *mm) { } #endif /* CONFIG_PPC_SUBPAGE_PROT */ -typedef unsigned long mm_context_id_t; -struct spinlock; - -typedef struct { - mm_context_id_t id; - u16 user_psize; /* page size index */ - -#ifdef CONFIG_PPC_MM_SLICES - u64 low_slices_psize; /* SLB page size encodings */ - unsigned char high_slices_psize[SLICE_ARRAY_SIZE]; -#else - u16 sllp; /* SLB page size encoding */ -#endif - unsigned long vdso_base; -#ifdef CONFIG_PPC_SUBPAGE_PROT - struct subpage_prot_table spt; -#endif /* CONFIG_PPC_SUBPAGE_PROT */ -#ifdef CONFIG_PPC_ICSWX - struct spinlock *cop_lockp; /* guard acop and cop_pid */ - unsigned long acop; /* mask of enabled coprocessor types */ - unsigned int cop_pid; /* pid value used with coprocessors */ -#endif /* CONFIG_PPC_ICSWX */ -#ifdef CONFIG_PPC_64K_PAGES - /* for 4K PTE fragment support */ - void *pte_frag; -#endif -#ifdef CONFIG_SPAPR_TCE_IOMMU - struct list_head iommu_group_mem_list; -#endif -} mm_context_t; - - #if 0 /* * The code below is equivalent to this function for arguments @@ -579,7 +534,7 @@ static inline unsigned long get_vsid(unsigned long context, unsigned long ea, /* * Bad address. We return VSID 0 for that */ - if ((ea & ~REGION_MASK) >= PGTABLE_RANGE) + if ((ea & ~REGION_MASK) >= H_PGTABLE_RANGE) return 0; if (ssize == MMU_SEGSIZE_256M) @@ -613,4 +568,4 @@ unsigned htab_shift_for_mem_size(unsigned long mem_size); #endif /* __ASSEMBLY__ */ -#endif /* _ASM_POWERPC_MMU_HASH64_H_ */ +#endif /* _ASM_POWERPC_BOOK3S_64_MMU_HASH_H_ */ diff --git a/arch/powerpc/include/asm/book3s/64/mmu.h b/arch/powerpc/include/asm/book3s/64/mmu.h new file mode 100644 index 000000000000..5854263d4d6e --- /dev/null +++ b/arch/powerpc/include/asm/book3s/64/mmu.h @@ -0,0 +1,137 @@ +#ifndef _ASM_POWERPC_BOOK3S_64_MMU_H_ +#define _ASM_POWERPC_BOOK3S_64_MMU_H_ + +#ifndef __ASSEMBLY__ +/* + * Page size definition + * + * shift : is the "PAGE_SHIFT" value for that page size + * sllp : is a bit mask with the value of SLB L || LP to be or'ed + * directly to a slbmte "vsid" value + * penc : is the HPTE encoding mask for the "LP" field: + * + */ +struct mmu_psize_def { + unsigned int shift; /* number of bits */ + int penc[MMU_PAGE_COUNT]; /* HPTE encoding */ + unsigned int tlbiel; /* tlbiel supported for that page size */ + unsigned long avpnm; /* bits to mask out in AVPN in the HPTE */ + union { + unsigned long sllp; /* SLB L||LP (exact mask to use in slbmte) */ + unsigned long ap; /* Ap encoding used by PowerISA 3.0 */ + }; +}; +extern struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT]; + +#define radix_enabled() mmu_has_feature(MMU_FTR_RADIX) + +#endif /* __ASSEMBLY__ */ + +/* 64-bit classic hash table MMU */ +#include <asm/book3s/64/mmu-hash.h> + +#ifndef __ASSEMBLY__ +/* + * ISA 3.0 partiton and process table entry format + */ +struct prtb_entry { + __be64 prtb0; + __be64 prtb1; +}; +extern struct prtb_entry *process_tb; + +struct patb_entry { + __be64 patb0; + __be64 patb1; +}; +extern struct patb_entry *partition_tb; + +#define PATB_HR (1UL << 63) +#define PATB_GR (1UL << 63) +#define RPDB_MASK 0x0ffffffffffff00fUL +#define RPDB_SHIFT (1UL << 8) +/* + * Limit process table to PAGE_SIZE table. This + * also limit the max pid we can support. + * MAX_USER_CONTEXT * 16 bytes of space. + */ +#define PRTB_SIZE_SHIFT (CONTEXT_BITS + 4) +/* + * Power9 currently only support 64K partition table size. + */ +#define PATB_SIZE_SHIFT 16 + +typedef unsigned long mm_context_id_t; +struct spinlock; + +typedef struct { + mm_context_id_t id; + u16 user_psize; /* page size index */ + +#ifdef CONFIG_PPC_MM_SLICES + u64 low_slices_psize; /* SLB page size encodings */ + unsigned char high_slices_psize[SLICE_ARRAY_SIZE]; +#else + u16 sllp; /* SLB page size encoding */ +#endif + unsigned long vdso_base; +#ifdef CONFIG_PPC_SUBPAGE_PROT + struct subpage_prot_table spt; +#endif /* CONFIG_PPC_SUBPAGE_PROT */ +#ifdef CONFIG_PPC_ICSWX + struct spinlock *cop_lockp; /* guard acop and cop_pid */ + unsigned long acop; /* mask of enabled coprocessor types */ + unsigned int cop_pid; /* pid value used with coprocessors */ +#endif /* CONFIG_PPC_ICSWX */ +#ifdef CONFIG_PPC_64K_PAGES + /* for 4K PTE fragment support */ + void *pte_frag; +#endif +#ifdef CONFIG_SPAPR_TCE_IOMMU + struct list_head iommu_group_mem_list; +#endif +} mm_context_t; + +/* + * The current system page and segment sizes + */ +extern int mmu_linear_psize; +extern int mmu_virtual_psize; +extern int mmu_vmalloc_psize; +extern int mmu_vmemmap_psize; +extern int mmu_io_psize; + +/* MMU initialization */ +extern void radix_init_native(void); +extern void hash__early_init_mmu(void); +extern void radix__early_init_mmu(void); +static inline void early_init_mmu(void) +{ + if (radix_enabled()) + return radix__early_init_mmu(); + return hash__early_init_mmu(); +} +extern void hash__early_init_mmu_secondary(void); +extern void radix__early_init_mmu_secondary(void); +static inline void early_init_mmu_secondary(void) +{ + if (radix_enabled()) + return radix__early_init_mmu_secondary(); + return hash__early_init_mmu_secondary(); +} + +extern void hash__setup_initial_memory_limit(phys_addr_t first_memblock_base, + phys_addr_t first_memblock_size); +extern void radix__setup_initial_memory_limit(phys_addr_t first_memblock_base, + phys_addr_t first_memblock_size); +static inline void setup_initial_memory_limit(phys_addr_t first_memblock_base, + phys_addr_t first_memblock_size) +{ + if (radix_enabled()) + return radix__setup_initial_memory_limit(first_memblock_base, + first_memblock_size); + return hash__setup_initial_memory_limit(first_memblock_base, + first_memblock_size); +} +#endif /* __ASSEMBLY__ */ +#endif /* _ASM_POWERPC_BOOK3S_64_MMU_H_ */ diff --git a/arch/powerpc/include/asm/book3s/64/pgalloc.h b/arch/powerpc/include/asm/book3s/64/pgalloc.h new file mode 100644 index 000000000000..488279edb1f0 --- /dev/null +++ b/arch/powerpc/include/asm/book3s/64/pgalloc.h @@ -0,0 +1,207 @@ +#ifndef _ASM_POWERPC_BOOK3S_64_PGALLOC_H +#define _ASM_POWERPC_BOOK3S_64_PGALLOC_H +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <linux/slab.h> +#include <linux/cpumask.h> +#include <linux/percpu.h> + +struct vmemmap_backing { + struct vmemmap_backing *list; + unsigned long phys; + unsigned long virt_addr; +}; +extern struct vmemmap_backing *vmemmap_list; + +/* + * Functions that deal with pagetables that could be at any level of + * the table need to be passed an "index_size" so they know how to + * handle allocation. For PTE pages (which are linked to a struct + * page for now, and drawn from the main get_free_pages() pool), the + * allocation size will be (2^index_size * sizeof(pointer)) and + * allocations are drawn from the kmem_cache in PGT_CACHE(index_size). + * + * The maximum index size needs to be big enough to allow any + * pagetable sizes we need, but small enough to fit in the low bits of + * any page table pointer. In other words all pagetables, even tiny + * ones, must be aligned to allow at least enough low 0 bits to + * contain this value. This value is also used as a mask, so it must + * be one less than a power of two. + */ +#define MAX_PGTABLE_INDEX_SIZE 0xf + +extern struct kmem_cache *pgtable_cache[]; +#define PGT_CACHE(shift) ({ \ + BUG_ON(!(shift)); \ + pgtable_cache[(shift) - 1]; \ + }) + +#define PGALLOC_GFP GFP_KERNEL | __GFP_NOTRACK | __GFP_REPEAT | __GFP_ZERO + +extern pte_t *pte_fragment_alloc(struct mm_struct *, unsigned long, int); +extern void pte_fragment_free(unsigned long *, int); +extern void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int shift); +#ifdef CONFIG_SMP +extern void __tlb_remove_table(void *_table); +#endif + +static inline pgd_t *radix__pgd_alloc(struct mm_struct *mm) +{ +#ifdef CONFIG_PPC_64K_PAGES + return (pgd_t *)__get_free_page(PGALLOC_GFP); +#else + struct page *page; + page = alloc_pages(PGALLOC_GFP, 4); + if (!page) + return NULL; + return (pgd_t *) page_address(page); +#endif +} + +static inline void radix__pgd_free(struct mm_struct *mm, pgd_t *pgd) +{ +#ifdef CONFIG_PPC_64K_PAGES + free_page((unsigned long)pgd); +#else + free_pages((unsigned long)pgd, 4); +#endif +} + +static inline pgd_t *pgd_alloc(struct mm_struct *mm) +{ + if (radix_enabled()) + return radix__pgd_alloc(mm); + return kmem_cache_alloc(PGT_CACHE(PGD_INDEX_SIZE), GFP_KERNEL); +} + +static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) +{ + if (radix_enabled()) + return radix__pgd_free(mm, pgd); + kmem_cache_free(PGT_CACHE(PGD_INDEX_SIZE), pgd); +} + +static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud) +{ + pgd_set(pgd, __pgtable_ptr_val(pud) | PGD_VAL_BITS); +} + +static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) +{ + return kmem_cache_alloc(PGT_CACHE(PUD_INDEX_SIZE), + GFP_KERNEL|__GFP_REPEAT); +} + +static inline void pud_free(struct mm_struct *mm, pud_t *pud) +{ + kmem_cache_free(PGT_CACHE(PUD_INDEX_SIZE), pud); +} + +static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) +{ + pud_set(pud, __pgtable_ptr_val(pmd) | PUD_VAL_BITS); +} + +static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pud, + unsigned long address) +{ + pgtable_free_tlb(tlb, pud, PUD_INDEX_SIZE); +} + +static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) +{ + return kmem_cache_alloc(PGT_CACHE(PMD_CACHE_INDEX), + GFP_KERNEL|__GFP_REPEAT); +} + +static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) +{ + kmem_cache_free(PGT_CACHE(PMD_CACHE_INDEX), pmd); +} + +static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd, + unsigned long address) +{ + return pgtable_free_tlb(tlb, pmd, PMD_CACHE_INDEX); +} + +static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, + pte_t *pte) +{ + pmd_set(pmd, __pgtable_ptr_val(pte) | PMD_VAL_BITS); +} + +static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, + pgtable_t pte_page) +{ + pmd_set(pmd, __pgtable_ptr_val(pte_page) | PMD_VAL_BITS); +} + +static inline pgtable_t pmd_pgtable(pmd_t pmd) +{ + return (pgtable_t)pmd_page_vaddr(pmd); +} + +#ifdef CONFIG_PPC_4K_PAGES +static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, + unsigned long address) +{ + return (pte_t *)__get_free_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO); +} + +static inline pgtable_t pte_alloc_one(struct mm_struct *mm, + unsigned long address) +{ + struct page *page; + pte_t *pte; + + pte = pte_alloc_one_kernel(mm, address); + if (!pte) + return NULL; + page = virt_to_page(pte); + if (!pgtable_page_ctor(page)) { + __free_page(page); + return NULL; + } + return pte; +} +#else /* if CONFIG_PPC_64K_PAGES */ + +static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, + unsigned long address) +{ + return (pte_t *)pte_fragment_alloc(mm, address, 1); +} + +static inline pgtable_t pte_alloc_one(struct mm_struct *mm, + unsigned long address) +{ + return (pgtable_t)pte_fragment_alloc(mm, address, 0); +} +#endif + +static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) +{ + pte_fragment_free((unsigned long *)pte, 1); +} + +static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage) +{ + pte_fragment_free((unsigned long *)ptepage, 0); +} + +static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table, + unsigned long address) +{ + tlb_flush_pgtable(tlb, address); + pgtable_free_tlb(tlb, table, 0); +} + +#define check_pgt_cache() do { } while (0) + +#endif /* _ASM_POWERPC_BOOK3S_64_PGALLOC_H */ diff --git a/arch/powerpc/include/asm/book3s/64/pgtable-4k.h b/arch/powerpc/include/asm/book3s/64/pgtable-4k.h new file mode 100644 index 000000000000..71e9abced493 --- /dev/null +++ b/arch/powerpc/include/asm/book3s/64/pgtable-4k.h @@ -0,0 +1,53 @@ +#ifndef _ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H +#define _ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H +/* + * hash 4k can't share hugetlb and also doesn't support THP + */ +#ifndef __ASSEMBLY__ +#ifdef CONFIG_HUGETLB_PAGE +static inline int pmd_huge(pmd_t pmd) +{ + /* + * leaf pte for huge page + */ + if (radix_enabled()) + return !!(pmd_val(pmd) & _PAGE_PTE); + return 0; +} + +static inline int pud_huge(pud_t pud) +{ + /* + * leaf pte for huge page + */ + if (radix_enabled()) + return !!(pud_val(pud) & _PAGE_PTE); + return 0; +} + +static inline int pgd_huge(pgd_t pgd) +{ + /* + * leaf pte for huge page + */ + if (radix_enabled()) + return !!(pgd_val(pgd) & _PAGE_PTE); + return 0; +} +#define pgd_huge pgd_huge +/* + * With radix , we have hugepage ptes in the pud and pmd entries. We don't + * need to setup hugepage directory for them. Our pte and page directory format + * enable us to have this enabled. + */ +static inline int hugepd_ok(hugepd_t hpd) +{ + if (radix_enabled()) + return 0; + return hash__hugepd_ok(hpd); +} +#define is_hugepd(hpd) (hugepd_ok(hpd)) +#endif /* CONFIG_HUGETLB_PAGE */ +#endif /* __ASSEMBLY__ */ + +#endif /*_ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H */ diff --git a/arch/powerpc/include/asm/book3s/64/pgtable-64k.h b/arch/powerpc/include/asm/book3s/64/pgtable-64k.h new file mode 100644 index 000000000000..cb2d0a5fa3f8 --- /dev/null +++ b/arch/powerpc/include/asm/book3s/64/pgtable-64k.h @@ -0,0 +1,64 @@ +#ifndef _ASM_POWERPC_BOOK3S_64_PGTABLE_64K_H +#define _ASM_POWERPC_BOOK3S_64_PGTABLE_64K_H + +#ifndef __ASSEMBLY__ +#ifdef CONFIG_HUGETLB_PAGE +/* + * We have PGD_INDEX_SIZ = 12 and PTE_INDEX_SIZE = 8, so that we can have + * 16GB hugepage pte in PGD and 16MB hugepage pte at PMD; + * + * Defined in such a way that we can optimize away code block at build time + * if CONFIG_HUGETLB_PAGE=n. + */ +static inline int pmd_huge(pmd_t pmd) +{ + /* + * leaf pte for huge page + */ + return !!(pmd_val(pmd) & _PAGE_PTE); +} + +static inline int pud_huge(pud_t pud) +{ + /* + * leaf pte for huge page + */ + return !!(pud_val(pud) & _PAGE_PTE); +} + +static inline int pgd_huge(pgd_t pgd) +{ + /* + * leaf pte for huge page + */ + return !!(pgd_val(pgd) & _PAGE_PTE); +} +#define pgd_huge pgd_huge + +#ifdef CONFIG_DEBUG_VM +extern int hugepd_ok(hugepd_t hpd); +#define is_hugepd(hpd) (hugepd_ok(hpd)) +#else +/* + * With 64k page size, we have hugepage ptes in the pgd and pmd entries. We don't + * need to setup hugepage directory for them. Our pte and page directory format + * enable us to have this enabled. + */ +static inline int hugepd_ok(hugepd_t hpd) +{ + return 0; +} +#define is_hugepd(pdep) 0 +#endif /* CONFIG_DEBUG_VM */ + +#endif /* CONFIG_HUGETLB_PAGE */ + +static inline int remap_4k_pfn(struct vm_area_struct *vma, unsigned long addr, + unsigned long pfn, pgprot_t prot) +{ + if (radix_enabled()) + BUG(); + return hash__remap_4k_pfn(vma, addr, pfn, prot); +} +#endif /* __ASSEMBLY__ */ +#endif /*_ASM_POWERPC_BOOK3S_64_PGTABLE_64K_H */ diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h index 8fe6f6b48aa5..88a5ecaa157b 100644 --- a/arch/powerpc/include/asm/book3s/64/pgtable.h +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h @@ -1,13 +1,247 @@ #ifndef _ASM_POWERPC_BOOK3S_64_PGTABLE_H_ #define _ASM_POWERPC_BOOK3S_64_PGTABLE_H_ + +/* + * Common bits between hash and Radix page table + */ +#define _PAGE_BIT_SWAP_TYPE 0 + +#define _PAGE_EXEC 0x00001 /* execute permission */ +#define _PAGE_WRITE 0x00002 /* write access allowed */ +#define _PAGE_READ 0x00004 /* read access allowed */ +#define _PAGE_RW (_PAGE_READ | _PAGE_WRITE) +#define _PAGE_RWX (_PAGE_READ | _PAGE_WRITE | _PAGE_EXEC) +#define _PAGE_PRIVILEGED 0x00008 /* kernel access only */ +#define _PAGE_SAO 0x00010 /* Strong access order */ +#define _PAGE_NON_IDEMPOTENT 0x00020 /* non idempotent memory */ +#define _PAGE_TOLERANT 0x00030 /* tolerant memory, cache inhibited */ +#define _PAGE_DIRTY 0x00080 /* C: page changed */ +#define _PAGE_ACCESSED 0x00100 /* R: page referenced */ /* - * This file contains the functions and defines necessary to modify and use - * the ppc64 hashed page table. + * Software bits */ +#define _RPAGE_SW0 0x2000000000000000UL +#define _RPAGE_SW1 0x00800 +#define _RPAGE_SW2 0x00400 +#define _RPAGE_SW3 0x00200 +#ifdef CONFIG_MEM_SOFT_DIRTY +#define _PAGE_SOFT_DIRTY _RPAGE_SW3 /* software: software dirty tracking */ +#else +#define _PAGE_SOFT_DIRTY 0x00000 +#endif +#define _PAGE_SPECIAL _RPAGE_SW2 /* software: special page */ + + +#define _PAGE_PTE (1ul << 62) /* distinguishes PTEs from pointers */ +#define _PAGE_PRESENT (1ul << 63) /* pte contains a translation */ +/* + * Drivers request for cache inhibited pte mapping using _PAGE_NO_CACHE + * Instead of fixing all of them, add an alternate define which + * maps CI pte mapping. + */ +#define _PAGE_NO_CACHE _PAGE_TOLERANT +/* + * We support 57 bit real address in pte. Clear everything above 57, and + * every thing below PAGE_SHIFT; + */ +#define PTE_RPN_MASK (((1UL << 57) - 1) & (PAGE_MASK)) +/* + * set of bits not changed in pmd_modify. Even though we have hash specific bits + * in here, on radix we expect them to be zero. + */ +#define _HPAGE_CHG_MASK (PTE_RPN_MASK | _PAGE_HPTEFLAGS | _PAGE_DIRTY | \ + _PAGE_ACCESSED | H_PAGE_THP_HUGE | _PAGE_PTE | \ + _PAGE_SOFT_DIRTY) +/* + * user access blocked by key + */ +#define _PAGE_KERNEL_RW (_PAGE_PRIVILEGED | _PAGE_RW | _PAGE_DIRTY) +#define _PAGE_KERNEL_RO (_PAGE_PRIVILEGED | _PAGE_READ) +#define _PAGE_KERNEL_RWX (_PAGE_PRIVILEGED | _PAGE_DIRTY | \ + _PAGE_RW | _PAGE_EXEC) +/* + * No page size encoding in the linux PTE + */ +#define _PAGE_PSIZE 0 +/* + * _PAGE_CHG_MASK masks of bits that are to be preserved across + * pgprot changes + */ +#define _PAGE_CHG_MASK (PTE_RPN_MASK | _PAGE_HPTEFLAGS | _PAGE_DIRTY | \ + _PAGE_ACCESSED | _PAGE_SPECIAL | _PAGE_PTE | \ + _PAGE_SOFT_DIRTY) +/* + * Mask of bits returned by pte_pgprot() + */ +#define PAGE_PROT_BITS (_PAGE_SAO | _PAGE_NON_IDEMPOTENT | _PAGE_TOLERANT | \ + H_PAGE_4K_PFN | _PAGE_PRIVILEGED | _PAGE_ACCESSED | \ + _PAGE_READ | _PAGE_WRITE | _PAGE_DIRTY | _PAGE_EXEC | \ + _PAGE_SOFT_DIRTY) +/* + * We define 2 sets of base prot bits, one for basic pages (ie, + * cacheable kernel and user pages) and one for non cacheable + * pages. We always set _PAGE_COHERENT when SMP is enabled or + * the processor might need it for DMA coherency. + */ +#define _PAGE_BASE_NC (_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_PSIZE) +#define _PAGE_BASE (_PAGE_BASE_NC) + +/* Permission masks used to generate the __P and __S table, + * + * Note:__pgprot is defined in arch/powerpc/include/asm/page.h + * + * Write permissions imply read permissions for now (we could make write-only + * pages on BookE but we don't bother for now). Execute permission control is + * possible on platforms that define _PAGE_EXEC + * + * Note due to the way vm flags are laid out, the bits are XWR + */ +#define PAGE_NONE __pgprot(_PAGE_BASE | _PAGE_PRIVILEGED) +#define PAGE_SHARED __pgprot(_PAGE_BASE | _PAGE_RW) +#define PAGE_SHARED_X __pgprot(_PAGE_BASE | _PAGE_RW | _PAGE_EXEC) +#define PAGE_COPY __pgprot(_PAGE_BASE | _PAGE_READ) +#define PAGE_COPY_X __pgprot(_PAGE_BASE | _PAGE_READ | _PAGE_EXEC) +#define PAGE_READONLY __pgprot(_PAGE_BASE | _PAGE_READ) +#define PAGE_READONLY_X __pgprot(_PAGE_BASE | _PAGE_READ | _PAGE_EXEC) + +#define __P000 PAGE_NONE +#define __P001 PAGE_READONLY +#define __P010 PAGE_COPY +#define __P011 PAGE_COPY +#define __P100 PAGE_READONLY_X +#define __P101 PAGE_READONLY_X +#define __P110 PAGE_COPY_X +#define __P111 PAGE_COPY_X + +#define __S000 PAGE_NONE +#define __S001 PAGE_READONLY +#define __S010 PAGE_SHARED +#define __S011 PAGE_SHARED +#define __S100 PAGE_READONLY_X +#define __S101 PAGE_READONLY_X +#define __S110 PAGE_SHARED_X +#define __S111 PAGE_SHARED_X + +/* Permission masks used for kernel mappings */ +#define PAGE_KERNEL __pgprot(_PAGE_BASE | _PAGE_KERNEL_RW) +#define PAGE_KERNEL_NC __pgprot(_PAGE_BASE_NC | _PAGE_KERNEL_RW | \ + _PAGE_TOLERANT) +#define PAGE_KERNEL_NCG __pgprot(_PAGE_BASE_NC | _PAGE_KERNEL_RW | \ + _PAGE_NON_IDEMPOTENT) +#define PAGE_KERNEL_X __pgprot(_PAGE_BASE | _PAGE_KERNEL_RWX) +#define PAGE_KERNEL_RO __pgprot(_PAGE_BASE | _PAGE_KERNEL_RO) +#define PAGE_KERNEL_ROX __pgprot(_PAGE_BASE | _PAGE_KERNEL_ROX) + +/* + * Protection used for kernel text. We want the debuggers to be able to + * set breakpoints anywhere, so don't write protect the kernel text + * on platforms where such control is possible. + */ +#if defined(CONFIG_KGDB) || defined(CONFIG_XMON) || defined(CONFIG_BDI_SWITCH) || \ + defined(CONFIG_KPROBES) || defined(CONFIG_DYNAMIC_FTRACE) +#define PAGE_KERNEL_TEXT PAGE_KERNEL_X +#else +#define PAGE_KERNEL_TEXT PAGE_KERNEL_ROX +#endif + +/* Make modules code happy. We don't set RO yet */ +#define PAGE_KERNEL_EXEC PAGE_KERNEL_X +#define PAGE_AGP (PAGE_KERNEL_NC) + +#ifndef __ASSEMBLY__ +/* + * page table defines + */ +extern unsigned long __pte_index_size; +extern unsigned long __pmd_index_size; +extern unsigned long __pud_index_size; +extern unsigned long __pgd_index_size; +extern unsigned long __pmd_cache_index; +#define PTE_INDEX_SIZE __pte_index_size +#define PMD_INDEX_SIZE __pmd_index_size +#define PUD_INDEX_SIZE __pud_index_size +#define PGD_INDEX_SIZE __pgd_index_size +#define PMD_CACHE_INDEX __pmd_cache_index +/* + * Because of use of pte fragments and THP, size of page table + * are not always derived out of index size above. + */ +extern unsigned long __pte_table_size; +extern unsigned long __pmd_table_size; +extern unsigned long __pud_table_size; +extern unsigned long __pgd_table_size; +#define PTE_TABLE_SIZE __pte_table_size +#define PMD_TABLE_SIZE __pmd_table_size +#define PUD_TABLE_SIZE __pud_table_size +#define PGD_TABLE_SIZE __pgd_table_size + +extern unsigned long __pmd_val_bits; +extern unsigned long __pud_val_bits; +extern unsigned long __pgd_val_bits; +#define PMD_VAL_BITS __pmd_val_bits +#define PUD_VAL_BITS __pud_val_bits +#define PGD_VAL_BITS __pgd_val_bits + +extern unsigned long __pte_frag_nr; +#define PTE_FRAG_NR __pte_frag_nr +extern unsigned long __pte_frag_size_shift; +#define PTE_FRAG_SIZE_SHIFT __pte_frag_size_shift +#define PTE_FRAG_SIZE (1UL << PTE_FRAG_SIZE_SHIFT) +/* + * Pgtable size used by swapper, init in asm code + */ +#define MAX_PGD_TABLE_SIZE (sizeof(pgd_t) << RADIX_PGD_INDEX_SIZE) + +#define PTRS_PER_PTE (1 << PTE_INDEX_SIZE) +#define PTRS_PER_PMD (1 << PMD_INDEX_SIZE) +#define PTRS_PER_PUD (1 << PUD_INDEX_SIZE) +#define PTRS_PER_PGD (1 << PGD_INDEX_SIZE) + +/* PMD_SHIFT determines what a second-level page table entry can map */ +#define PMD_SHIFT (PAGE_SHIFT + PTE_INDEX_SIZE) +#define PMD_SIZE (1UL << PMD_SHIFT) +#define PMD_MASK (~(PMD_SIZE-1)) + +/* PUD_SHIFT determines what a third-level page table entry can map */ +#define PUD_SHIFT (PMD_SHIFT + PMD_INDEX_SIZE) +#define PUD_SIZE (1UL << PUD_SHIFT) +#define PUD_MASK (~(PUD_SIZE-1)) + +/* PGDIR_SHIFT determines what a fourth-level page table entry can map */ +#define PGDIR_SHIFT (PUD_SHIFT + PUD_INDEX_SIZE) +#define PGDIR_SIZE (1UL << PGDIR_SHIFT) +#define PGDIR_MASK (~(PGDIR_SIZE-1)) + +/* Bits to mask out from a PMD to get to the PTE page */ +#define PMD_MASKED_BITS 0xc0000000000000ffUL +/* Bits to mask out from a PUD to get to the PMD page */ +#define PUD_MASKED_BITS 0xc0000000000000ffUL +/* Bits to mask out from a PGD to get to the PUD page */ +#define PGD_MASKED_BITS 0xc0000000000000ffUL + +extern unsigned long __vmalloc_start; +extern unsigned long __vmalloc_end; +#define VMALLOC_START __vmalloc_start +#define VMALLOC_END __vmalloc_end + +extern unsigned long __kernel_virt_start; +extern unsigned long __kernel_virt_size; +#define KERN_VIRT_START __kernel_virt_start +#define KERN_VIRT_SIZE __kernel_virt_size +extern struct page *vmemmap; +extern unsigned long ioremap_bot; +#endif /* __ASSEMBLY__ */ #include <asm/book3s/64/hash.h> -#include <asm/barrier.h> +#include <asm/book3s/64/radix.h> +#ifdef CONFIG_PPC_64K_PAGES +#include <asm/book3s/64/pgtable-64k.h> +#else +#include <asm/book3s/64/pgtable-4k.h> +#endif + +#include <asm/barrier.h> /* * The second half of the kernel virtual space is used for IO mappings, * it's itself carved into the PIO region (ISA and PHB IO space) and @@ -26,8 +260,6 @@ #define IOREMAP_BASE (PHB_IO_END) #define IOREMAP_END (KERN_VIRT_START + KERN_VIRT_SIZE) -#define vmemmap ((struct page *)VMEMMAP_BASE) - /* Advertise special mapping type for AGP */ #define HAVE_PAGE_AGP @@ -45,7 +277,7 @@ #define __real_pte(e,p) ((real_pte_t){(e)}) #define __rpte_to_pte(r) ((r).pte) -#define __rpte_to_hidx(r,index) (pte_val(__rpte_to_pte(r)) >>_PAGE_F_GIX_SHIFT) +#define __rpte_to_hidx(r,index) (pte_val(__rpte_to_pte(r)) >> H_PAGE_F_GIX_SHIFT) #define pte_iterate_hashed_subpages(rpte, psize, va, index, shift) \ do { \ @@ -62,6 +294,327 @@ #endif /* __real_pte */ +static inline unsigned long pte_update(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, unsigned long clr, + unsigned long set, int huge) +{ + if (radix_enabled()) + return radix__pte_update(mm, addr, ptep, clr, set, huge); + return hash__pte_update(mm, addr, ptep, clr, set, huge); +} +/* + * For hash even if we have _PAGE_ACCESSED = 0, we do a pte_update. + * We currently remove entries from the hashtable regardless of whether + * the entry was young or dirty. + * + * We should be more intelligent about this but for the moment we override + * these functions and force a tlb flush unconditionally + * For radix: H_PAGE_HASHPTE should be zero. Hence we can use the same + * function for both hash and radix. + */ +static inline int __ptep_test_and_clear_young(struct mm_struct *mm, + unsigned long addr, pte_t *ptep) +{ + unsigned long old; + + if ((pte_val(*ptep) & (_PAGE_ACCESSED | H_PAGE_HASHPTE)) == 0) + return 0; + old = pte_update(mm, addr, ptep, _PAGE_ACCESSED, 0, 0); + return (old & _PAGE_ACCESSED) != 0; +} + +#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG +#define ptep_test_and_clear_young(__vma, __addr, __ptep) \ +({ \ + int __r; \ + __r = __ptep_test_and_clear_young((__vma)->vm_mm, __addr, __ptep); \ + __r; \ +}) + +#define __HAVE_ARCH_PTEP_SET_WRPROTECT +static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, + pte_t *ptep) +{ + + if ((pte_val(*ptep) & _PAGE_WRITE) == 0) + return; + + pte_update(mm, addr, ptep, _PAGE_WRITE, 0, 0); +} + +static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, + unsigned long addr, pte_t *ptep) +{ + if ((pte_val(*ptep) & _PAGE_WRITE) == 0) + return; + + pte_update(mm, addr, ptep, _PAGE_WRITE, 0, 1); +} + +#define __HAVE_ARCH_PTEP_GET_AND_CLEAR +static inline pte_t ptep_get_and_clear(struct mm_struct *mm, + unsigned long addr, pte_t *ptep) +{ + unsigned long old = pte_update(mm, addr, ptep, ~0UL, 0, 0); + return __pte(old); +} + +static inline void pte_clear(struct mm_struct *mm, unsigned long addr, + pte_t * ptep) +{ + pte_update(mm, addr, ptep, ~0UL, 0, 0); +} +static inline int pte_write(pte_t pte) { return !!(pte_val(pte) & _PAGE_WRITE);} +static inline int pte_dirty(pte_t pte) { return !!(pte_val(pte) & _PAGE_DIRTY); } +static inline int pte_young(pte_t pte) { return !!(pte_val(pte) & _PAGE_ACCESSED); } +static inline int pte_special(pte_t pte) { return !!(pte_val(pte) & _PAGE_SPECIAL); } +static inline pgprot_t pte_pgprot(pte_t pte) { return __pgprot(pte_val(pte) & PAGE_PROT_BITS); } + +#ifdef CONFIG_HAVE_ARCH_SOFT_DIRTY +static inline bool pte_soft_dirty(pte_t pte) +{ + return !!(pte_val(pte) & _PAGE_SOFT_DIRTY); +} +static inline pte_t pte_mksoft_dirty(pte_t pte) +{ + return __pte(pte_val(pte) | _PAGE_SOFT_DIRTY); +} + +static inline pte_t pte_clear_soft_dirty(pte_t pte) +{ + return __pte(pte_val(pte) & ~_PAGE_SOFT_DIRTY); +} +#endif /* CONFIG_HAVE_ARCH_SOFT_DIRTY */ + +#ifdef CONFIG_NUMA_BALANCING +/* + * These work without NUMA balancing but the kernel does not care. See the + * comment in include/asm-generic/pgtable.h . On powerpc, this will only + * work for user pages and always return true for kernel pages. + */ +static inline int pte_protnone(pte_t pte) +{ + return (pte_val(pte) & (_PAGE_PRESENT | _PAGE_PRIVILEGED)) == + (_PAGE_PRESENT | _PAGE_PRIVILEGED); +} +#endif /* CONFIG_NUMA_BALANCING */ + +static inline int pte_present(pte_t pte) +{ + return !!(pte_val(pte) & _PAGE_PRESENT); +} +/* + * Conversion functions: convert a page and protection to a page entry, + * and a page entry and page directory to the page they refer to. + * + * Even if PTEs can be unsigned long long, a PFN is always an unsigned + * long for now. + */ +static inline pte_t pfn_pte(unsigned long pfn, pgprot_t pgprot) +{ + return __pte((((pte_basic_t)(pfn) << PAGE_SHIFT) & PTE_RPN_MASK) | + pgprot_val(pgprot)); +} + +static inline unsigned long pte_pfn(pte_t pte) +{ + return (pte_val(pte) & PTE_RPN_MASK) >> PAGE_SHIFT; +} + +/* Generic modifiers for PTE bits */ +static inline pte_t pte_wrprotect(pte_t pte) +{ + return __pte(pte_val(pte) & ~_PAGE_WRITE); +} + +static inline pte_t pte_mkclean(pte_t pte) +{ + return __pte(pte_val(pte) & ~_PAGE_DIRTY); +} + +static inline pte_t pte_mkold(pte_t pte) +{ + return __pte(pte_val(pte) & ~_PAGE_ACCESSED); +} + +static inline pte_t pte_mkwrite(pte_t pte) +{ + /* + * write implies read, hence set both + */ + return __pte(pte_val(pte) | _PAGE_RW); +} + +static inline pte_t pte_mkdirty(pte_t pte) +{ + return __pte(pte_val(pte) | _PAGE_DIRTY | _PAGE_SOFT_DIRTY); +} + +static inline pte_t pte_mkyoung(pte_t pte) +{ + return __pte(pte_val(pte) | _PAGE_ACCESSED); +} + +static inline pte_t pte_mkspecial(pte_t pte) +{ + return __pte(pte_val(pte) | _PAGE_SPECIAL); +} + +static inline pte_t pte_mkhuge(pte_t pte) +{ + return pte; +} + +static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) +{ + /* FIXME!! check whether this need to be a conditional */ + return __pte((pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot)); +} + +static inline bool pte_user(pte_t pte) +{ + return !(pte_val(pte) & _PAGE_PRIVILEGED); +} + +/* Encode and de-code a swap entry */ +#define MAX_SWAPFILES_CHECK() do { \ + BUILD_BUG_ON(MAX_SWAPFILES_SHIFT > SWP_TYPE_BITS); \ + /* \ + * Don't have overlapping bits with _PAGE_HPTEFLAGS \ + * We filter HPTEFLAGS on set_pte. \ + */ \ + BUILD_BUG_ON(_PAGE_HPTEFLAGS & (0x1f << _PAGE_BIT_SWAP_TYPE)); \ + BUILD_BUG_ON(_PAGE_HPTEFLAGS & _PAGE_SWP_SOFT_DIRTY); \ + } while (0) +/* + * on pte we don't need handle RADIX_TREE_EXCEPTIONAL_SHIFT; + */ +#define SWP_TYPE_BITS 5 +#define __swp_type(x) (((x).val >> _PAGE_BIT_SWAP_TYPE) \ + & ((1UL << SWP_TYPE_BITS) - 1)) +#define __swp_offset(x) (((x).val & PTE_RPN_MASK) >> PAGE_SHIFT) +#define __swp_entry(type, offset) ((swp_entry_t) { \ + ((type) << _PAGE_BIT_SWAP_TYPE) \ + | (((offset) << PAGE_SHIFT) & PTE_RPN_MASK)}) +/* + * swp_entry_t must be independent of pte bits. We build a swp_entry_t from + * swap type and offset we get from swap and convert that to pte to find a + * matching pte in linux page table. + * Clear bits not found in swap entries here. + */ +#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val((pte)) & ~_PAGE_PTE }) +#define __swp_entry_to_pte(x) __pte((x).val | _PAGE_PTE) + +#ifdef CONFIG_MEM_SOFT_DIRTY +#define _PAGE_SWP_SOFT_DIRTY (1UL << (SWP_TYPE_BITS + _PAGE_BIT_SWAP_TYPE)) +#else +#define _PAGE_SWP_SOFT_DIRTY 0UL +#endif /* CONFIG_MEM_SOFT_DIRTY */ + +#ifdef CONFIG_HAVE_ARCH_SOFT_DIRTY +static inline pte_t pte_swp_mksoft_dirty(pte_t pte) +{ + return __pte(pte_val(pte) | _PAGE_SWP_SOFT_DIRTY); +} +static inline bool pte_swp_soft_dirty(pte_t pte) +{ + return !!(pte_val(pte) & _PAGE_SWP_SOFT_DIRTY); +} +static inline pte_t pte_swp_clear_soft_dirty(pte_t pte) +{ + return __pte(pte_val(pte) & ~_PAGE_SWP_SOFT_DIRTY); +} +#endif /* CONFIG_HAVE_ARCH_SOFT_DIRTY */ + +static inline bool check_pte_access(unsigned long access, unsigned long ptev) +{ + /* + * This check for _PAGE_RWX and _PAGE_PRESENT bits + */ + if (access & ~ptev) + return false; + /* + * This check for access to privilege space + */ + if ((access & _PAGE_PRIVILEGED) != (ptev & _PAGE_PRIVILEGED)) + return false; + + return true; +} +/* + * Generic functions with hash/radix callbacks + */ + +static inline void __ptep_set_access_flags(pte_t *ptep, pte_t entry) +{ + if (radix_enabled()) + return radix__ptep_set_access_flags(ptep, entry); + return hash__ptep_set_access_flags(ptep, entry); +} + +#define __HAVE_ARCH_PTE_SAME +static inline int pte_same(pte_t pte_a, pte_t pte_b) +{ + if (radix_enabled()) + return radix__pte_same(pte_a, pte_b); + return hash__pte_same(pte_a, pte_b); +} + +static inline int pte_none(pte_t pte) +{ + if (radix_enabled()) + return radix__pte_none(pte); + return hash__pte_none(pte); +} + +static inline void __set_pte_at(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t pte, int percpu) +{ + if (radix_enabled()) + return radix__set_pte_at(mm, addr, ptep, pte, percpu); + return hash__set_pte_at(mm, addr, ptep, pte, percpu); +} + +#define _PAGE_CACHE_CTL (_PAGE_NON_IDEMPOTENT | _PAGE_TOLERANT) + +#define pgprot_noncached pgprot_noncached +static inline pgprot_t pgprot_noncached(pgprot_t prot) +{ + return __pgprot((pgprot_val(prot) & ~_PAGE_CACHE_CTL) | + _PAGE_NON_IDEMPOTENT); +} + +#define pgprot_noncached_wc pgprot_noncached_wc +static inline pgprot_t pgprot_noncached_wc(pgprot_t prot) +{ + return __pgprot((pgprot_val(prot) & ~_PAGE_CACHE_CTL) | + _PAGE_TOLERANT); +} + +#define pgprot_cached pgprot_cached +static inline pgprot_t pgprot_cached(pgprot_t prot) +{ + return __pgprot((pgprot_val(prot) & ~_PAGE_CACHE_CTL)); +} + +#define pgprot_writecombine pgprot_writecombine +static inline pgprot_t pgprot_writecombine(pgprot_t prot) +{ + return pgprot_noncached_wc(prot); +} +/* + * check a pte mapping have cache inhibited property + */ +static inline bool pte_ci(pte_t pte) +{ + unsigned long pte_v = pte_val(pte); + + if (((pte_v & _PAGE_CACHE_CTL) == _PAGE_TOLERANT) || + ((pte_v & _PAGE_CACHE_CTL) == _PAGE_NON_IDEMPOTENT)) + return true; + return false; +} + static inline void pmd_set(pmd_t *pmdp, unsigned long val) { *pmdp = __pmd(val); @@ -75,6 +628,13 @@ static inline void pmd_clear(pmd_t *pmdp) #define pmd_none(pmd) (!pmd_val(pmd)) #define pmd_present(pmd) (!pmd_none(pmd)) +static inline int pmd_bad(pmd_t pmd) +{ + if (radix_enabled()) + return radix__pmd_bad(pmd); + return hash__pmd_bad(pmd); +} + static inline void pud_set(pud_t *pudp, unsigned long val) { *pudp = __pud(val); @@ -100,6 +660,15 @@ static inline pud_t pte_pud(pte_t pte) return __pud(pte_val(pte)); } #define pud_write(pud) pte_write(pud_pte(pud)) + +static inline int pud_bad(pud_t pud) +{ + if (radix_enabled()) + return radix__pud_bad(pud); + return hash__pud_bad(pud); +} + + #define pgd_write(pgd) pte_write(pgd_pte(pgd)) static inline void pgd_set(pgd_t *pgdp, unsigned long val) { @@ -124,8 +693,27 @@ static inline pgd_t pte_pgd(pte_t pte) return __pgd(pte_val(pte)); } +static inline int pgd_bad(pgd_t pgd) +{ + if (radix_enabled()) + return radix__pgd_bad(pgd); + return hash__pgd_bad(pgd); +} + extern struct page *pgd_page(pgd_t pgd); +/* Pointers in the page table tree are physical addresses */ +#define __pgtable_ptr_val(ptr) __pa(ptr) + +#define pmd_page_vaddr(pmd) __va(pmd_val(pmd) & ~PMD_MASKED_BITS) +#define pud_page_vaddr(pud) __va(pud_val(pud) & ~PUD_MASKED_BITS) +#define pgd_page_vaddr(pgd) __va(pgd_val(pgd) & ~PGD_MASKED_BITS) + +#define pgd_index(address) (((address) >> (PGDIR_SHIFT)) & (PTRS_PER_PGD - 1)) +#define pud_index(address) (((address) >> (PUD_SHIFT)) & (PTRS_PER_PUD - 1)) +#define pmd_index(address) (((address) >> (PMD_SHIFT)) & (PTRS_PER_PMD - 1)) +#define pte_index(address) (((address) >> (PAGE_SHIFT)) & (PTRS_PER_PTE - 1)) + /* * Find an entry in a page-table-directory. We combine the address region * (the high order N bits) and the pgd portion of the address. @@ -156,74 +744,42 @@ extern struct page *pgd_page(pgd_t pgd); #define pgd_ERROR(e) \ pr_err("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e)) -/* Encode and de-code a swap entry */ -#define MAX_SWAPFILES_CHECK() do { \ - BUILD_BUG_ON(MAX_SWAPFILES_SHIFT > SWP_TYPE_BITS); \ - /* \ - * Don't have overlapping bits with _PAGE_HPTEFLAGS \ - * We filter HPTEFLAGS on set_pte. \ - */ \ - BUILD_BUG_ON(_PAGE_HPTEFLAGS & (0x1f << _PAGE_BIT_SWAP_TYPE)); \ - BUILD_BUG_ON(_PAGE_HPTEFLAGS & _PAGE_SWP_SOFT_DIRTY); \ - } while (0) -/* - * on pte we don't need handle RADIX_TREE_EXCEPTIONAL_SHIFT; - */ -#define SWP_TYPE_BITS 5 -#define __swp_type(x) (((x).val >> _PAGE_BIT_SWAP_TYPE) \ - & ((1UL << SWP_TYPE_BITS) - 1)) -#define __swp_offset(x) (((x).val & PTE_RPN_MASK) >> PTE_RPN_SHIFT) -#define __swp_entry(type, offset) ((swp_entry_t) { \ - ((type) << _PAGE_BIT_SWAP_TYPE) \ - | (((offset) << PTE_RPN_SHIFT) & PTE_RPN_MASK)}) -/* - * swp_entry_t must be independent of pte bits. We build a swp_entry_t from - * swap type and offset we get from swap and convert that to pte to find a - * matching pte in linux page table. - * Clear bits not found in swap entries here. - */ -#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val((pte)) & ~_PAGE_PTE }) -#define __swp_entry_to_pte(x) __pte((x).val | _PAGE_PTE) - -#ifdef CONFIG_MEM_SOFT_DIRTY -#define _PAGE_SWP_SOFT_DIRTY (1UL << (SWP_TYPE_BITS + _PAGE_BIT_SWAP_TYPE)) -#else -#define _PAGE_SWP_SOFT_DIRTY 0UL -#endif /* CONFIG_MEM_SOFT_DIRTY */ +void pgtable_cache_add(unsigned shift, void (*ctor)(void *)); +void pgtable_cache_init(void); -#ifdef CONFIG_HAVE_ARCH_SOFT_DIRTY -static inline pte_t pte_swp_mksoft_dirty(pte_t pte) +static inline int map_kernel_page(unsigned long ea, unsigned long pa, + unsigned long flags) { - return __pte(pte_val(pte) | _PAGE_SWP_SOFT_DIRTY); + if (radix_enabled()) { +#if defined(CONFIG_PPC_RADIX_MMU) && defined(DEBUG_VM) + unsigned long page_size = 1 << mmu_psize_defs[mmu_io_psize].shift; + WARN((page_size != PAGE_SIZE), "I/O page size != PAGE_SIZE"); +#endif + return radix__map_kernel_page(ea, pa, __pgprot(flags), PAGE_SIZE); + } + return hash__map_kernel_page(ea, pa, flags); } -static inline bool pte_swp_soft_dirty(pte_t pte) + +static inline int __meminit vmemmap_create_mapping(unsigned long start, + unsigned long page_size, + unsigned long phys) { - return !!(pte_val(pte) & _PAGE_SWP_SOFT_DIRTY); + if (radix_enabled()) + return radix__vmemmap_create_mapping(start, page_size, phys); + return hash__vmemmap_create_mapping(start, page_size, phys); } -static inline pte_t pte_swp_clear_soft_dirty(pte_t pte) + +#ifdef CONFIG_MEMORY_HOTPLUG +static inline void vmemmap_remove_mapping(unsigned long start, + unsigned long page_size) { - return __pte(pte_val(pte) & ~_PAGE_SWP_SOFT_DIRTY); + if (radix_enabled()) + return radix__vmemmap_remove_mapping(start, page_size); + return hash__vmemmap_remove_mapping(start, page_size); } -#endif /* CONFIG_HAVE_ARCH_SOFT_DIRTY */ - -void pgtable_cache_add(unsigned shift, void (*ctor)(void *)); -void pgtable_cache_init(void); - +#endif struct page *realmode_pfn_to_page(unsigned long pfn); -#ifdef CONFIG_TRANSPARENT_HUGEPAGE -extern pmd_t pfn_pmd(unsigned long pfn, pgprot_t pgprot); -extern pmd_t mk_pmd(struct page *page, pgprot_t pgprot); -extern pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot); -extern void set_pmd_at(struct mm_struct *mm, unsigned long addr, - pmd_t *pmdp, pmd_t pmd); -extern void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr, - pmd_t *pmd); -#define has_transparent_hugepage has_transparent_hugepage -extern int has_transparent_hugepage(void); -#endif /* CONFIG_TRANSPARENT_HUGEPAGE */ - - static inline pte_t pmd_pte(pmd_t pmd) { return __pte(pmd_val(pmd)); @@ -238,7 +794,6 @@ static inline pte_t *pmdp_ptep(pmd_t *pmd) { return (pte_t *)pmd; } - #define pmd_pfn(pmd) pte_pfn(pmd_pte(pmd)) #define pmd_dirty(pmd) pte_dirty(pmd_pte(pmd)) #define pmd_young(pmd) pte_young(pmd_pte(pmd)) @@ -265,9 +820,87 @@ static inline int pmd_protnone(pmd_t pmd) #define __HAVE_ARCH_PMD_WRITE #define pmd_write(pmd) pte_write(pmd_pte(pmd)) +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +extern pmd_t pfn_pmd(unsigned long pfn, pgprot_t pgprot); +extern pmd_t mk_pmd(struct page *page, pgprot_t pgprot); +extern pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot); +extern void set_pmd_at(struct mm_struct *mm, unsigned long addr, + pmd_t *pmdp, pmd_t pmd); +extern void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr, + pmd_t *pmd); +extern int hash__has_transparent_hugepage(void); +static inline int has_transparent_hugepage(void) +{ + if (radix_enabled()) + return radix__has_transparent_hugepage(); + return hash__has_transparent_hugepage(); +} +#define has_transparent_hugepage has_transparent_hugepage + +static inline unsigned long +pmd_hugepage_update(struct mm_struct *mm, unsigned long addr, pmd_t *pmdp, + unsigned long clr, unsigned long set) +{ + if (radix_enabled()) + return radix__pmd_hugepage_update(mm, addr, pmdp, clr, set); + return hash__pmd_hugepage_update(mm, addr, pmdp, clr, set); +} + +static inline int pmd_large(pmd_t pmd) +{ + return !!(pmd_val(pmd) & _PAGE_PTE); +} + +static inline pmd_t pmd_mknotpresent(pmd_t pmd) +{ + return __pmd(pmd_val(pmd) & ~_PAGE_PRESENT); +} +/* + * For radix we should always find H_PAGE_HASHPTE zero. Hence + * the below will work for radix too + */ +static inline int __pmdp_test_and_clear_young(struct mm_struct *mm, + unsigned long addr, pmd_t *pmdp) +{ + unsigned long old; + + if ((pmd_val(*pmdp) & (_PAGE_ACCESSED | H_PAGE_HASHPTE)) == 0) + return 0; + old = pmd_hugepage_update(mm, addr, pmdp, _PAGE_ACCESSED, 0); + return ((old & _PAGE_ACCESSED) != 0); +} + +#define __HAVE_ARCH_PMDP_SET_WRPROTECT +static inline void pmdp_set_wrprotect(struct mm_struct *mm, unsigned long addr, + pmd_t *pmdp) +{ + + if ((pmd_val(*pmdp) & _PAGE_WRITE) == 0) + return; + + pmd_hugepage_update(mm, addr, pmdp, _PAGE_WRITE, 0); +} + +static inline int pmd_trans_huge(pmd_t pmd) +{ + if (radix_enabled()) + return radix__pmd_trans_huge(pmd); + return hash__pmd_trans_huge(pmd); +} + +#define __HAVE_ARCH_PMD_SAME +static inline int pmd_same(pmd_t pmd_a, pmd_t pmd_b) +{ + if (radix_enabled()) + return radix__pmd_same(pmd_a, pmd_b); + return hash__pmd_same(pmd_a, pmd_b); +} + static inline pmd_t pmd_mkhuge(pmd_t pmd) { - return __pmd(pmd_val(pmd) | (_PAGE_PTE | _PAGE_THP_HUGE)); + if (radix_enabled()) + return radix__pmd_mkhuge(pmd); + return hash__pmd_mkhuge(pmd); } #define __HAVE_ARCH_PMDP_SET_ACCESS_FLAGS @@ -278,37 +911,63 @@ extern int pmdp_set_access_flags(struct vm_area_struct *vma, #define __HAVE_ARCH_PMDP_TEST_AND_CLEAR_YOUNG extern int pmdp_test_and_clear_young(struct vm_area_struct *vma, unsigned long address, pmd_t *pmdp); -#define __HAVE_ARCH_PMDP_CLEAR_YOUNG_FLUSH -extern int pmdp_clear_flush_young(struct vm_area_struct *vma, - unsigned long address, pmd_t *pmdp); #define __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR -extern pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm, - unsigned long addr, pmd_t *pmdp); +static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm, + unsigned long addr, pmd_t *pmdp) +{ + if (radix_enabled()) + return radix__pmdp_huge_get_and_clear(mm, addr, pmdp); + return hash__pmdp_huge_get_and_clear(mm, addr, pmdp); +} -extern pmd_t pmdp_collapse_flush(struct vm_area_struct *vma, - unsigned long address, pmd_t *pmdp); +static inline pmd_t pmdp_collapse_flush(struct vm_area_struct *vma, + unsigned long address, pmd_t *pmdp) +{ + if (radix_enabled()) + return radix__pmdp_collapse_flush(vma, address, pmdp); + return hash__pmdp_collapse_flush(vma, address, pmdp); +} #define pmdp_collapse_flush pmdp_collapse_flush #define __HAVE_ARCH_PGTABLE_DEPOSIT -extern void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp, - pgtable_t pgtable); +static inline void pgtable_trans_huge_deposit(struct mm_struct *mm, + pmd_t *pmdp, pgtable_t pgtable) +{ + if (radix_enabled()) + return radix__pgtable_trans_huge_deposit(mm, pmdp, pgtable); + return hash__pgtable_trans_huge_deposit(mm, pmdp, pgtable); +} + #define __HAVE_ARCH_PGTABLE_WITHDRAW -extern pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp); +static inline pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, + pmd_t *pmdp) +{ + if (radix_enabled()) + return radix__pgtable_trans_huge_withdraw(mm, pmdp); + return hash__pgtable_trans_huge_withdraw(mm, pmdp); +} #define __HAVE_ARCH_PMDP_INVALIDATE extern void pmdp_invalidate(struct vm_area_struct *vma, unsigned long address, pmd_t *pmdp); #define __HAVE_ARCH_PMDP_HUGE_SPLIT_PREPARE -extern void pmdp_huge_split_prepare(struct vm_area_struct *vma, - unsigned long address, pmd_t *pmdp); +static inline void pmdp_huge_split_prepare(struct vm_area_struct *vma, + unsigned long address, pmd_t *pmdp) +{ + if (radix_enabled()) + return radix__pmdp_huge_split_prepare(vma, address, pmdp); + return hash__pmdp_huge_split_prepare(vma, address, pmdp); +} #define pmd_move_must_withdraw pmd_move_must_withdraw struct spinlock; static inline int pmd_move_must_withdraw(struct spinlock *new_pmd_ptl, struct spinlock *old_pmd_ptl) { + if (radix_enabled()) + return false; /* * Archs like ppc64 use pgtable to store per pmd * specific information. So when we switch the pmd, @@ -316,5 +975,6 @@ static inline int pmd_move_must_withdraw(struct spinlock *new_pmd_ptl, */ return true; } +#endif /* CONFIG_TRANSPARENT_HUGEPAGE */ #endif /* __ASSEMBLY__ */ #endif /* _ASM_POWERPC_BOOK3S_64_PGTABLE_H_ */ diff --git a/arch/powerpc/include/asm/book3s/64/radix-4k.h b/arch/powerpc/include/asm/book3s/64/radix-4k.h new file mode 100644 index 000000000000..7c3b1fe1619e --- /dev/null +++ b/arch/powerpc/include/asm/book3s/64/radix-4k.h @@ -0,0 +1,12 @@ +#ifndef _ASM_POWERPC_PGTABLE_RADIX_4K_H +#define _ASM_POWERPC_PGTABLE_RADIX_4K_H + +/* + * For 4K page size supported index is 13/9/9/9 + */ +#define RADIX_PTE_INDEX_SIZE 9 /* 2MB huge page */ +#define RADIX_PMD_INDEX_SIZE 9 /* 1G huge page */ +#define RADIX_PUD_INDEX_SIZE 9 +#define RADIX_PGD_INDEX_SIZE 13 + +#endif /* _ASM_POWERPC_PGTABLE_RADIX_4K_H */ diff --git a/arch/powerpc/include/asm/book3s/64/radix-64k.h b/arch/powerpc/include/asm/book3s/64/radix-64k.h new file mode 100644 index 000000000000..82dc355f0b45 --- /dev/null +++ b/arch/powerpc/include/asm/book3s/64/radix-64k.h @@ -0,0 +1,12 @@ +#ifndef _ASM_POWERPC_PGTABLE_RADIX_64K_H +#define _ASM_POWERPC_PGTABLE_RADIX_64K_H + +/* + * For 64K page size supported index is 13/9/9/5 + */ +#define RADIX_PTE_INDEX_SIZE 5 /* 2MB huge page */ +#define RADIX_PMD_INDEX_SIZE 9 /* 1G huge page */ +#define RADIX_PUD_INDEX_SIZE 9 +#define RADIX_PGD_INDEX_SIZE 13 + +#endif /* _ASM_POWERPC_PGTABLE_RADIX_64K_H */ diff --git a/arch/powerpc/include/asm/book3s/64/radix.h b/arch/powerpc/include/asm/book3s/64/radix.h new file mode 100644 index 000000000000..937d4e247ac3 --- /dev/null +++ b/arch/powerpc/include/asm/book3s/64/radix.h @@ -0,0 +1,232 @@ +#ifndef _ASM_POWERPC_PGTABLE_RADIX_H +#define _ASM_POWERPC_PGTABLE_RADIX_H + +#ifndef __ASSEMBLY__ +#include <asm/cmpxchg.h> +#endif + +#ifdef CONFIG_PPC_64K_PAGES +#include <asm/book3s/64/radix-64k.h> +#else +#include <asm/book3s/64/radix-4k.h> +#endif + +/* An empty PTE can still have a R or C writeback */ +#define RADIX_PTE_NONE_MASK (_PAGE_DIRTY | _PAGE_ACCESSED) + +/* Bits to set in a RPMD/RPUD/RPGD */ +#define RADIX_PMD_VAL_BITS (0x8000000000000000UL | RADIX_PTE_INDEX_SIZE) +#define RADIX_PUD_VAL_BITS (0x8000000000000000UL | RADIX_PMD_INDEX_SIZE) +#define RADIX_PGD_VAL_BITS (0x8000000000000000UL | RADIX_PUD_INDEX_SIZE) + +/* Don't have anything in the reserved bits and leaf bits */ +#define RADIX_PMD_BAD_BITS 0x60000000000000e0UL +#define RADIX_PUD_BAD_BITS 0x60000000000000e0UL +#define RADIX_PGD_BAD_BITS 0x60000000000000e0UL + +/* + * Size of EA range mapped by our pagetables. + */ +#define RADIX_PGTABLE_EADDR_SIZE (RADIX_PTE_INDEX_SIZE + RADIX_PMD_INDEX_SIZE + \ + RADIX_PUD_INDEX_SIZE + RADIX_PGD_INDEX_SIZE + PAGE_SHIFT) +#define RADIX_PGTABLE_RANGE (ASM_CONST(1) << RADIX_PGTABLE_EADDR_SIZE) + +/* + * We support 52 bit address space, Use top bit for kernel + * virtual mapping. Also make sure kernel fit in the top + * quadrant. + * + * +------------------+ + * +------------------+ Kernel virtual map (0xc008000000000000) + * | | + * | | + * | | + * 0b11......+------------------+ Kernel linear map (0xc....) + * | | + * | 2 quadrant | + * | | + * 0b10......+------------------+ + * | | + * | 1 quadrant | + * | | + * 0b01......+------------------+ + * | | + * | 0 quadrant | + * | | + * 0b00......+------------------+ + * + * + * 3rd quadrant expanded: + * +------------------------------+ + * | | + * | | + * | | + * +------------------------------+ Kernel IO map end (0xc010000000000000) + * | | + * | | + * | 1/2 of virtual map | + * | | + * | | + * +------------------------------+ Kernel IO map start + * | | + * | 1/4 of virtual map | + * | | + * +------------------------------+ Kernel vmemap start + * | | + * | 1/4 of virtual map | + * | | + * +------------------------------+ Kernel virt start (0xc008000000000000) + * | | + * | | + * | | + * +------------------------------+ Kernel linear (0xc.....) + */ + +#define RADIX_KERN_VIRT_START ASM_CONST(0xc008000000000000) +#define RADIX_KERN_VIRT_SIZE ASM_CONST(0x0008000000000000) + +/* + * The vmalloc space starts at the beginning of that region, and + * occupies a quarter of it on radix config. + * (we keep a quarter for the virtual memmap) + */ +#define RADIX_VMALLOC_START RADIX_KERN_VIRT_START +#define RADIX_VMALLOC_SIZE (RADIX_KERN_VIRT_SIZE >> 2) +#define RADIX_VMALLOC_END (RADIX_VMALLOC_START + RADIX_VMALLOC_SIZE) +/* + * Defines the address of the vmemap area, in its own region on + * hash table CPUs. + */ +#define RADIX_VMEMMAP_BASE (RADIX_VMALLOC_END) + +#ifndef __ASSEMBLY__ +#define RADIX_PTE_TABLE_SIZE (sizeof(pte_t) << RADIX_PTE_INDEX_SIZE) +#define RADIX_PMD_TABLE_SIZE (sizeof(pmd_t) << RADIX_PMD_INDEX_SIZE) +#define RADIX_PUD_TABLE_SIZE (sizeof(pud_t) << RADIX_PUD_INDEX_SIZE) +#define RADIX_PGD_TABLE_SIZE (sizeof(pgd_t) << RADIX_PGD_INDEX_SIZE) + +static inline unsigned long radix__pte_update(struct mm_struct *mm, + unsigned long addr, + pte_t *ptep, unsigned long clr, + unsigned long set, + int huge) +{ + pte_t pte; + unsigned long old_pte, new_pte; + + do { + pte = READ_ONCE(*ptep); + old_pte = pte_val(pte); + new_pte = (old_pte | set) & ~clr; + + } while (!pte_xchg(ptep, __pte(old_pte), __pte(new_pte))); + + /* We already do a sync in cmpxchg, is ptesync needed ?*/ + asm volatile("ptesync" : : : "memory"); + /* huge pages use the old page table lock */ + if (!huge) + assert_pte_locked(mm, addr); + + return old_pte; +} + +/* + * Set the dirty and/or accessed bits atomically in a linux PTE, this + * function doesn't need to invalidate tlb. + */ +static inline void radix__ptep_set_access_flags(pte_t *ptep, pte_t entry) +{ + pte_t pte; + unsigned long old_pte, new_pte; + unsigned long set = pte_val(entry) & (_PAGE_DIRTY | _PAGE_ACCESSED | + _PAGE_RW | _PAGE_EXEC); + do { + pte = READ_ONCE(*ptep); + old_pte = pte_val(pte); + new_pte = old_pte | set; + + } while (!pte_xchg(ptep, __pte(old_pte), __pte(new_pte))); + + /* We already do a sync in cmpxchg, is ptesync needed ?*/ + asm volatile("ptesync" : : : "memory"); +} + +static inline int radix__pte_same(pte_t pte_a, pte_t pte_b) +{ + return ((pte_raw(pte_a) ^ pte_raw(pte_b)) == 0); +} + +static inline int radix__pte_none(pte_t pte) +{ + return (pte_val(pte) & ~RADIX_PTE_NONE_MASK) == 0; +} + +static inline void radix__set_pte_at(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t pte, int percpu) +{ + *ptep = pte; + asm volatile("ptesync" : : : "memory"); +} + +static inline int radix__pmd_bad(pmd_t pmd) +{ + return !!(pmd_val(pmd) & RADIX_PMD_BAD_BITS); +} + +static inline int radix__pmd_same(pmd_t pmd_a, pmd_t pmd_b) +{ + return ((pmd_raw(pmd_a) ^ pmd_raw(pmd_b)) == 0); +} + +static inline int radix__pud_bad(pud_t pud) +{ + return !!(pud_val(pud) & RADIX_PUD_BAD_BITS); +} + + +static inline int radix__pgd_bad(pgd_t pgd) +{ + return !!(pgd_val(pgd) & RADIX_PGD_BAD_BITS); +} + +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + +static inline int radix__pmd_trans_huge(pmd_t pmd) +{ + return !!(pmd_val(pmd) & _PAGE_PTE); +} + +static inline pmd_t radix__pmd_mkhuge(pmd_t pmd) +{ + return __pmd(pmd_val(pmd) | _PAGE_PTE); +} +static inline void radix__pmdp_huge_split_prepare(struct vm_area_struct *vma, + unsigned long address, pmd_t *pmdp) +{ + /* Nothing to do for radix. */ + return; +} + +extern unsigned long radix__pmd_hugepage_update(struct mm_struct *mm, unsigned long addr, + pmd_t *pmdp, unsigned long clr, + unsigned long set); +extern pmd_t radix__pmdp_collapse_flush(struct vm_area_struct *vma, + unsigned long address, pmd_t *pmdp); +extern void radix__pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp, + pgtable_t pgtable); +extern pgtable_t radix__pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp); +extern pmd_t radix__pmdp_huge_get_and_clear(struct mm_struct *mm, + unsigned long addr, pmd_t *pmdp); +extern int radix__has_transparent_hugepage(void); +#endif + +extern int __meminit radix__vmemmap_create_mapping(unsigned long start, + unsigned long page_size, + unsigned long phys); +extern void radix__vmemmap_remove_mapping(unsigned long start, + unsigned long page_size); + +extern int radix__map_kernel_page(unsigned long ea, unsigned long pa, + pgprot_t flags, unsigned int psz); +#endif /* __ASSEMBLY__ */ +#endif diff --git a/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h b/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h index 1b753f96b374..f12ddf5e8de5 100644 --- a/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h +++ b/arch/powerpc/include/asm/book3s/64/tlbflush-hash.h @@ -1,8 +1,6 @@ #ifndef _ASM_POWERPC_BOOK3S_64_TLBFLUSH_HASH_H #define _ASM_POWERPC_BOOK3S_64_TLBFLUSH_HASH_H -#define MMU_NO_CONTEXT 0 - /* * TLB flushing for 64-bit hash-MMU CPUs */ @@ -29,14 +27,21 @@ extern void __flush_tlb_pending(struct ppc64_tlb_batch *batch); static inline void arch_enter_lazy_mmu_mode(void) { - struct ppc64_tlb_batch *batch = this_cpu_ptr(&ppc64_tlb_batch); + struct ppc64_tlb_batch *batch; + if (radix_enabled()) + return; + batch = this_cpu_ptr(&ppc64_tlb_batch); batch->active = 1; } static inline void arch_leave_lazy_mmu_mode(void) { - struct ppc64_tlb_batch *batch = this_cpu_ptr(&ppc64_tlb_batch); + struct ppc64_tlb_batch *batch; + + if (radix_enabled()) + return; + batch = this_cpu_ptr(&ppc64_tlb_batch); if (batch->index) __flush_tlb_pending(batch); @@ -52,40 +57,42 @@ extern void flush_hash_range(unsigned long number, int local); extern void flush_hash_hugepage(unsigned long vsid, unsigned long addr, pmd_t *pmdp, unsigned int psize, int ssize, unsigned long flags); - -static inline void local_flush_tlb_mm(struct mm_struct *mm) +static inline void hash__local_flush_tlb_mm(struct mm_struct *mm) { } -static inline void flush_tlb_mm(struct mm_struct *mm) +static inline void hash__flush_tlb_mm(struct mm_struct *mm) { } -static inline void local_flush_tlb_page(struct vm_area_struct *vma, - unsigned long vmaddr) +static inline void hash__local_flush_tlb_page(struct vm_area_struct *vma, + unsigned long vmaddr) { } -static inline void flush_tlb_page(struct vm_area_struct *vma, - unsigned long vmaddr) +static inline void hash__flush_tlb_page(struct vm_area_struct *vma, + unsigned long vmaddr) { } -static inline void flush_tlb_page_nohash(struct vm_area_struct *vma, - unsigned long vmaddr) +static inline void hash__flush_tlb_page_nohash(struct vm_area_struct *vma, + unsigned long vmaddr) { } -static inline void flush_tlb_range(struct vm_area_struct *vma, - unsigned long start, unsigned long end) +static inline void hash__flush_tlb_range(struct vm_area_struct *vma, + unsigned long start, unsigned long end) { } -static inline void flush_tlb_kernel_range(unsigned long start, - unsigned long end) +static inline void hash__flush_tlb_kernel_range(unsigned long start, + unsigned long end) { } + +struct mmu_gather; +extern void hash__tlb_flush(struct mmu_gather *tlb); /* Private function for use by PCI IO mapping code */ extern void __flush_hash_table_range(struct mm_struct *mm, unsigned long start, unsigned long end); diff --git a/arch/powerpc/include/asm/book3s/64/tlbflush-radix.h b/arch/powerpc/include/asm/book3s/64/tlbflush-radix.h new file mode 100644 index 000000000000..13ef38828dfe --- /dev/null +++ b/arch/powerpc/include/asm/book3s/64/tlbflush-radix.h @@ -0,0 +1,33 @@ +#ifndef _ASM_POWERPC_TLBFLUSH_RADIX_H +#define _ASM_POWERPC_TLBFLUSH_RADIX_H + +struct vm_area_struct; +struct mm_struct; +struct mmu_gather; + +static inline int mmu_get_ap(int psize) +{ + return mmu_psize_defs[psize].ap; +} + +extern void radix__flush_tlb_range(struct vm_area_struct *vma, unsigned long start, + unsigned long end); +extern void radix__flush_tlb_kernel_range(unsigned long start, unsigned long end); + +extern void radix__local_flush_tlb_mm(struct mm_struct *mm); +extern void radix__local_flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr); +extern void radix___local_flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr, + unsigned long ap, int nid); +extern void radix__tlb_flush(struct mmu_gather *tlb); +#ifdef CONFIG_SMP +extern void radix__flush_tlb_mm(struct mm_struct *mm); +extern void radix__flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr); +extern void radix___flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr, + unsigned long ap, int nid); +#else +#define radix__flush_tlb_mm(mm) radix__local_flush_tlb_mm(mm) +#define radix__flush_tlb_page(vma,addr) radix__local_flush_tlb_page(vma,addr) +#define radix___flush_tlb_page(mm,addr,p,i) radix___local_flush_tlb_page(mm,addr,p,i) +#endif + +#endif diff --git a/arch/powerpc/include/asm/book3s/64/tlbflush.h b/arch/powerpc/include/asm/book3s/64/tlbflush.h new file mode 100644 index 000000000000..d98424ae356c --- /dev/null +++ b/arch/powerpc/include/asm/book3s/64/tlbflush.h @@ -0,0 +1,76 @@ +#ifndef _ASM_POWERPC_BOOK3S_64_TLBFLUSH_H +#define _ASM_POWERPC_BOOK3S_64_TLBFLUSH_H + +#define MMU_NO_CONTEXT ~0UL + + +#include <asm/book3s/64/tlbflush-hash.h> +#include <asm/book3s/64/tlbflush-radix.h> + +static inline void flush_tlb_range(struct vm_area_struct *vma, + unsigned long start, unsigned long end) +{ + if (radix_enabled()) + return radix__flush_tlb_range(vma, start, end); + return hash__flush_tlb_range(vma, start, end); +} + +static inline void flush_tlb_kernel_range(unsigned long start, + unsigned long end) +{ + if (radix_enabled()) + return radix__flush_tlb_kernel_range(start, end); + return hash__flush_tlb_kernel_range(start, end); +} + +static inline void local_flush_tlb_mm(struct mm_struct *mm) +{ + if (radix_enabled()) + return radix__local_flush_tlb_mm(mm); + return hash__local_flush_tlb_mm(mm); +} + +static inline void local_flush_tlb_page(struct vm_area_struct *vma, + unsigned long vmaddr) +{ + if (radix_enabled()) + return radix__local_flush_tlb_page(vma, vmaddr); + return hash__local_flush_tlb_page(vma, vmaddr); +} + +static inline void flush_tlb_page_nohash(struct vm_area_struct *vma, + unsigned long vmaddr) +{ + if (radix_enabled()) + return radix__flush_tlb_page(vma, vmaddr); + return hash__flush_tlb_page_nohash(vma, vmaddr); +} + +static inline void tlb_flush(struct mmu_gather *tlb) +{ + if (radix_enabled()) + return radix__tlb_flush(tlb); + return hash__tlb_flush(tlb); +} + +#ifdef CONFIG_SMP +static inline void flush_tlb_mm(struct mm_struct *mm) +{ + if (radix_enabled()) + return radix__flush_tlb_mm(mm); + return hash__flush_tlb_mm(mm); +} + +static inline void flush_tlb_page(struct vm_area_struct *vma, + unsigned long vmaddr) +{ + if (radix_enabled()) + return radix__flush_tlb_page(vma, vmaddr); + return hash__flush_tlb_page(vma, vmaddr); +} +#else +#define flush_tlb_mm(mm) local_flush_tlb_mm(mm) +#define flush_tlb_page(vma, addr) local_flush_tlb_page(vma, addr) +#endif /* CONFIG_SMP */ + +#endif /* _ASM_POWERPC_BOOK3S_64_TLBFLUSH_H */ diff --git a/arch/powerpc/include/asm/book3s/pgalloc.h b/arch/powerpc/include/asm/book3s/pgalloc.h new file mode 100644 index 000000000000..54f591e9572e --- /dev/null +++ b/arch/powerpc/include/asm/book3s/pgalloc.h @@ -0,0 +1,19 @@ +#ifndef _ASM_POWERPC_BOOK3S_PGALLOC_H +#define _ASM_POWERPC_BOOK3S_PGALLOC_H + +#include <linux/mm.h> + +extern void tlb_remove_table(struct mmu_gather *tlb, void *table); +static inline void tlb_flush_pgtable(struct mmu_gather *tlb, + unsigned long address) +{ + +} + +#ifdef CONFIG_PPC64 +#include <asm/book3s/64/pgalloc.h> +#else +#include <asm/book3s/32/pgalloc.h> +#endif + +#endif /* _ASM_POWERPC_BOOK3S_PGALLOC_H */ diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h index 42814f0567cc..e2d9f4996e5c 100644 --- a/arch/powerpc/include/asm/hugetlb.h +++ b/arch/powerpc/include/asm/hugetlb.h @@ -8,6 +8,8 @@ extern struct kmem_cache *hugepte_cache; #ifdef CONFIG_PPC_BOOK3S_64 + +#include <asm/book3s/64/hugetlb-radix.h> /* * This should work for other subarchs too. But right now we use the * new format only for 64bit book3s @@ -31,7 +33,19 @@ static inline unsigned int hugepd_shift(hugepd_t hpd) { return mmu_psize_to_shift(hugepd_mmu_psize(hpd)); } +static inline void flush_hugetlb_page(struct vm_area_struct *vma, + unsigned long vmaddr) +{ + if (radix_enabled()) + return radix__flush_hugetlb_page(vma, vmaddr); +} +static inline void __local_flush_hugetlb_page(struct vm_area_struct *vma, + unsigned long vmaddr) +{ + if (radix_enabled()) + return radix__local_flush_hugetlb_page(vma, vmaddr); +} #else static inline pte_t *hugepd_page(hugepd_t hpd) diff --git a/arch/powerpc/include/asm/kvm_book3s_64.h b/arch/powerpc/include/asm/kvm_book3s_64.h index 7529aab068f5..1f4497fb5b83 100644 --- a/arch/powerpc/include/asm/kvm_book3s_64.h +++ b/arch/powerpc/include/asm/kvm_book3s_64.h @@ -276,19 +276,24 @@ static inline unsigned long hpte_make_readonly(unsigned long ptel) return ptel; } -static inline int hpte_cache_flags_ok(unsigned long ptel, unsigned long io_type) +static inline bool hpte_cache_flags_ok(unsigned long hptel, bool is_ci) { - unsigned int wimg = ptel & HPTE_R_WIMG; + unsigned int wimg = hptel & HPTE_R_WIMG; /* Handle SAO */ if (wimg == (HPTE_R_W | HPTE_R_I | HPTE_R_M) && cpu_has_feature(CPU_FTR_ARCH_206)) wimg = HPTE_R_M; - if (!io_type) + if (!is_ci) return wimg == HPTE_R_M; - - return (wimg & (HPTE_R_W | HPTE_R_I)) == io_type; + /* + * if host is mapped cache inhibited, make sure hptel also have + * cache inhibited. + */ + if (wimg & HPTE_R_W) /* FIXME!! is this ok for all guest. ? */ + return false; + return !!(wimg & HPTE_R_I); } /* @@ -305,9 +310,9 @@ static inline pte_t kvmppc_read_update_linux_pte(pte_t *ptep, int writing) */ old_pte = READ_ONCE(*ptep); /* - * wait until _PAGE_BUSY is clear then set it atomically + * wait until H_PAGE_BUSY is clear then set it atomically */ - if (unlikely(pte_val(old_pte) & _PAGE_BUSY)) { + if (unlikely(pte_val(old_pte) & H_PAGE_BUSY)) { cpu_relax(); continue; } @@ -319,27 +324,12 @@ static inline pte_t kvmppc_read_update_linux_pte(pte_t *ptep, int writing) if (writing && pte_write(old_pte)) new_pte = pte_mkdirty(new_pte); - if (pte_val(old_pte) == __cmpxchg_u64((unsigned long *)ptep, - pte_val(old_pte), - pte_val(new_pte))) { + if (pte_xchg(ptep, old_pte, new_pte)) break; - } } return new_pte; } - -/* Return HPTE cache control bits corresponding to Linux pte bits */ -static inline unsigned long hpte_cache_bits(unsigned long pte_val) -{ -#if _PAGE_NO_CACHE == HPTE_R_I && _PAGE_WRITETHRU == HPTE_R_W - return pte_val & (HPTE_R_W | HPTE_R_I); -#else - return ((pte_val & _PAGE_NO_CACHE) ? HPTE_R_I : 0) + - ((pte_val & _PAGE_WRITETHRU) ? HPTE_R_W : 0); -#endif -} - static inline bool hpte_read_permission(unsigned long pp, unsigned long key) { if (key) diff --git a/arch/powerpc/include/asm/machdep.h b/arch/powerpc/include/asm/machdep.h index fd22442d30a9..6bdcd0da9e21 100644 --- a/arch/powerpc/include/asm/machdep.h +++ b/arch/powerpc/include/asm/machdep.h @@ -256,6 +256,7 @@ struct machdep_calls { #ifdef CONFIG_ARCH_RANDOM int (*get_random_seed)(unsigned long *v); #endif + int (*update_partition_table)(u64); }; extern void e500_idle(void); diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h index 8ca1c983bf6c..e53ebebff474 100644 --- a/arch/powerpc/include/asm/mmu.h +++ b/arch/powerpc/include/asm/mmu.h @@ -88,6 +88,11 @@ */ #define MMU_FTR_1T_SEGMENT ASM_CONST(0x40000000) +/* + * Radix page table available + */ +#define MMU_FTR_RADIX ASM_CONST(0x80000000) + /* MMU feature bit sets for various CPUs */ #define MMU_FTRS_DEFAULT_HPTE_ARCH_V2 \ MMU_FTR_HPTE_TABLE | MMU_FTR_PPCAS_ARCH_V2 @@ -110,9 +115,25 @@ DECLARE_PER_CPU(int, next_tlbcam_idx); #endif +enum { + MMU_FTRS_POSSIBLE = MMU_FTR_HPTE_TABLE | MMU_FTR_TYPE_8xx | + MMU_FTR_TYPE_40x | MMU_FTR_TYPE_44x | MMU_FTR_TYPE_FSL_E | + MMU_FTR_TYPE_47x | MMU_FTR_USE_HIGH_BATS | MMU_FTR_BIG_PHYS | + MMU_FTR_USE_TLBIVAX_BCAST | MMU_FTR_USE_TLBILX | + MMU_FTR_LOCK_BCAST_INVAL | MMU_FTR_NEED_DTLB_SW_LRU | + MMU_FTR_USE_TLBRSRV | MMU_FTR_USE_PAIRED_MAS | + MMU_FTR_NO_SLBIE_B | MMU_FTR_16M_PAGE | MMU_FTR_TLBIEL | + MMU_FTR_LOCKLESS_TLBIE | MMU_FTR_CI_LARGE_PAGE | + MMU_FTR_1T_SEGMENT | +#ifdef CONFIG_PPC_RADIX_MMU + MMU_FTR_RADIX | +#endif + 0, +}; + static inline int mmu_has_feature(unsigned long feature) { - return (cur_cpu_spec->mmu_features & feature); + return (MMU_FTRS_POSSIBLE & cur_cpu_spec->mmu_features & feature); } static inline void mmu_clear_feature(unsigned long feature) @@ -122,13 +143,6 @@ static inline void mmu_clear_feature(unsigned long feature) extern unsigned int __start___mmu_ftr_fixup, __stop___mmu_ftr_fixup; -/* MMU initialization */ -extern void early_init_mmu(void); -extern void early_init_mmu_secondary(void); - -extern void setup_initial_memory_limit(phys_addr_t first_memblock_base, - phys_addr_t first_memblock_size); - #ifdef CONFIG_PPC64 /* This is our real memory area size on ppc64 server, on embedded, we * make it match the size our of bolted TLB area @@ -181,10 +195,20 @@ static inline void assert_pte_locked(struct mm_struct *mm, unsigned long addr) #define MMU_PAGE_COUNT 15 -#if defined(CONFIG_PPC_STD_MMU_64) -/* 64-bit classic hash table MMU */ -#include <asm/book3s/64/mmu-hash.h> -#elif defined(CONFIG_PPC_STD_MMU_32) +#ifdef CONFIG_PPC_BOOK3S_64 +#include <asm/book3s/64/mmu.h> +#else /* CONFIG_PPC_BOOK3S_64 */ + +#ifndef __ASSEMBLY__ +/* MMU initialization */ +extern void early_init_mmu(void); +extern void early_init_mmu_secondary(void); +extern void setup_initial_memory_limit(phys_addr_t first_memblock_base, + phys_addr_t first_memblock_size); +#endif /* __ASSEMBLY__ */ +#endif + +#if defined(CONFIG_PPC_STD_MMU_32) /* 32-bit classic hash table MMU */ #include <asm/book3s/32/mmu-hash.h> #elif defined(CONFIG_40x) @@ -201,6 +225,9 @@ static inline void assert_pte_locked(struct mm_struct *mm, unsigned long addr) # include <asm/mmu-8xx.h> #endif +#ifndef radix_enabled +#define radix_enabled() (0) +#endif #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_MMU_H_ */ diff --git a/arch/powerpc/include/asm/mmu_context.h b/arch/powerpc/include/asm/mmu_context.h index 4eaab40e3ade..9d2cd0c36ec2 100644 --- a/arch/powerpc/include/asm/mmu_context.h +++ b/arch/powerpc/include/asm/mmu_context.h @@ -33,16 +33,27 @@ extern long mm_iommu_ua_to_hpa(struct mm_iommu_table_group_mem_t *mem, extern long mm_iommu_mapped_inc(struct mm_iommu_table_group_mem_t *mem); extern void mm_iommu_mapped_dec(struct mm_iommu_table_group_mem_t *mem); #endif - -extern void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next); extern void switch_slb(struct task_struct *tsk, struct mm_struct *mm); extern void set_context(unsigned long id, pgd_t *pgd); #ifdef CONFIG_PPC_BOOK3S_64 +extern void radix__switch_mmu_context(struct mm_struct *prev, + struct mm_struct *next); +static inline void switch_mmu_context(struct mm_struct *prev, + struct mm_struct *next, + struct task_struct *tsk) +{ + if (radix_enabled()) + return radix__switch_mmu_context(prev, next); + return switch_slb(tsk, next); +} + extern int __init_new_context(void); extern void __destroy_context(int context_id); static inline void mmu_context_init(void) { } #else +extern void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next, + struct task_struct *tsk); extern unsigned long __init_new_context(void); extern void __destroy_context(unsigned long context_id); extern void mmu_context_init(void); @@ -88,17 +99,11 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, if (cpu_has_feature(CPU_FTR_ALTIVEC)) asm volatile ("dssall"); #endif /* CONFIG_ALTIVEC */ - - /* The actual HW switching method differs between the various - * sub architectures. + /* + * The actual HW switching method differs between the various + * sub architectures. Out of line for now */ -#ifdef CONFIG_PPC_STD_MMU_64 - switch_slb(tsk, next); -#else - /* Out of line for now */ - switch_mmu_context(prev, next); -#endif - + switch_mmu_context(prev, next, tsk); } #define deactivate_mm(tsk,mm) do { } while (0) diff --git a/arch/powerpc/include/asm/pgalloc-32.h b/arch/powerpc/include/asm/nohash/32/pgalloc.h index 76d6b9e0c8a9..76d6b9e0c8a9 100644 --- a/arch/powerpc/include/asm/pgalloc-32.h +++ b/arch/powerpc/include/asm/nohash/32/pgalloc.h diff --git a/arch/powerpc/include/asm/pgalloc-64.h b/arch/powerpc/include/asm/nohash/64/pgalloc.h index 8d5fc3ac43da..0c12a3bfe2ab 100644 --- a/arch/powerpc/include/asm/pgalloc-64.h +++ b/arch/powerpc/include/asm/nohash/64/pgalloc.h @@ -53,7 +53,7 @@ static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) #ifndef CONFIG_PPC_64K_PAGES -#define pgd_populate(MM, PGD, PUD) pgd_set(PGD, __pgtable_ptr_val(PUD)) +#define pgd_populate(MM, PGD, PUD) pgd_set(PGD, (unsigned long)PUD) static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) { @@ -68,19 +68,19 @@ static inline void pud_free(struct mm_struct *mm, pud_t *pud) static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) { - pud_set(pud, __pgtable_ptr_val(pmd)); + pud_set(pud, (unsigned long)pmd); } static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte) { - pmd_set(pmd, __pgtable_ptr_val(pte)); + pmd_set(pmd, (unsigned long)pte); } static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t pte_page) { - pmd_set(pmd, __pgtable_ptr_val(page_address(pte_page))); + pmd_set(pmd, (unsigned long)page_address(pte_page)); } #define pmd_pgtable(pmd) pmd_page(pmd) @@ -119,119 +119,65 @@ static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage) __free_page(ptepage); } -static inline void pgtable_free(void *table, unsigned index_size) -{ - if (!index_size) - free_page((unsigned long)table); - else { - BUG_ON(index_size > MAX_PGTABLE_INDEX_SIZE); - kmem_cache_free(PGT_CACHE(index_size), table); - } -} - +extern void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int shift); #ifdef CONFIG_SMP -static inline void pgtable_free_tlb(struct mmu_gather *tlb, - void *table, int shift) -{ - unsigned long pgf = (unsigned long)table; - BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE); - pgf |= shift; - tlb_remove_table(tlb, (void *)pgf); -} - -static inline void __tlb_remove_table(void *_table) -{ - void *table = (void *)((unsigned long)_table & ~MAX_PGTABLE_INDEX_SIZE); - unsigned shift = (unsigned long)_table & MAX_PGTABLE_INDEX_SIZE; - - pgtable_free(table, shift); -} -#else /* !CONFIG_SMP */ -static inline void pgtable_free_tlb(struct mmu_gather *tlb, - void *table, int shift) -{ - pgtable_free(table, shift); -} -#endif /* CONFIG_SMP */ - +extern void __tlb_remove_table(void *_table); +#endif static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table, unsigned long address) { tlb_flush_pgtable(tlb, address); - pgtable_page_dtor(table); pgtable_free_tlb(tlb, page_address(table), 0); } #else /* if CONFIG_PPC_64K_PAGES */ -extern pte_t *page_table_alloc(struct mm_struct *, unsigned long, int); -extern void page_table_free(struct mm_struct *, unsigned long *, int); +extern pte_t *pte_fragment_alloc(struct mm_struct *, unsigned long, int); +extern void pte_fragment_free(unsigned long *, int); extern void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int shift); #ifdef CONFIG_SMP extern void __tlb_remove_table(void *_table); #endif -#ifndef __PAGETABLE_PUD_FOLDED -/* book3s 64 is 4 level page table */ -static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud) -{ - pgd_set(pgd, __pgtable_ptr_val(pud)); -} - -static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) -{ - return kmem_cache_alloc(PGT_CACHE(PUD_INDEX_SIZE), - GFP_KERNEL|__GFP_REPEAT); -} - -static inline void pud_free(struct mm_struct *mm, pud_t *pud) -{ - kmem_cache_free(PGT_CACHE(PUD_INDEX_SIZE), pud); -} -#endif - -static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) -{ - pud_set(pud, __pgtable_ptr_val(pmd)); -} +#define pud_populate(mm, pud, pmd) pud_set(pud, (unsigned long)pmd) static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte) { - pmd_set(pmd, __pgtable_ptr_val(pte)); + pmd_set(pmd, (unsigned long)pte); } static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t pte_page) { - pmd_set(pmd, __pgtable_ptr_val(pte_page)); + pmd_set(pmd, (unsigned long)pte_page); } static inline pgtable_t pmd_pgtable(pmd_t pmd) { - return (pgtable_t)pmd_page_vaddr(pmd); + return (pgtable_t)(pmd_val(pmd) & ~PMD_MASKED_BITS); } static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address) { - return (pte_t *)page_table_alloc(mm, address, 1); + return (pte_t *)pte_fragment_alloc(mm, address, 1); } static inline pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address) { - return (pgtable_t)page_table_alloc(mm, address, 0); + return (pgtable_t)pte_fragment_alloc(mm, address, 0); } static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) { - page_table_free(mm, (unsigned long *)pte, 1); + pte_fragment_fre((unsigned long *)pte, 1); } static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage) { - page_table_free(mm, (unsigned long *)ptepage, 0); + pte_fragment_free((unsigned long *)ptepage, 0); } static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table, @@ -255,11 +201,11 @@ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) #define __pmd_free_tlb(tlb, pmd, addr) \ pgtable_free_tlb(tlb, pmd, PMD_CACHE_INDEX) -#ifndef __PAGETABLE_PUD_FOLDED +#ifndef CONFIG_PPC_64K_PAGES #define __pud_free_tlb(tlb, pud, addr) \ pgtable_free_tlb(tlb, pud, PUD_INDEX_SIZE) -#endif /* __PAGETABLE_PUD_FOLDED */ +#endif /* CONFIG_PPC_64K_PAGES */ #define check_pgt_cache() do { } while (0) diff --git a/arch/powerpc/include/asm/nohash/64/pgtable.h b/arch/powerpc/include/asm/nohash/64/pgtable.h index 10debb93c4a4..d4d808cf905e 100644 --- a/arch/powerpc/include/asm/nohash/64/pgtable.h +++ b/arch/powerpc/include/asm/nohash/64/pgtable.h @@ -108,9 +108,6 @@ #ifndef __ASSEMBLY__ /* pte_clear moved to later in this file */ -/* Pointers in the page table tree are virtual addresses */ -#define __pgtable_ptr_val(ptr) ((unsigned long)(ptr)) - #define PMD_BAD_BITS (PTE_TABLE_SIZE-1) #define PUD_BAD_BITS (PMD_TABLE_SIZE-1) @@ -362,6 +359,13 @@ static inline void __ptep_set_access_flags(pte_t *ptep, pte_t entry) void pgtable_cache_add(unsigned shift, void (*ctor)(void *)); void pgtable_cache_init(void); +extern int map_kernel_page(unsigned long ea, unsigned long pa, + unsigned long flags); +extern int __meminit vmemmap_create_mapping(unsigned long start, + unsigned long page_size, + unsigned long phys); +extern void vmemmap_remove_mapping(unsigned long start, + unsigned long page_size); #endif /* __ASSEMBLY__ */ #endif /* _ASM_POWERPC_NOHASH_64_PGTABLE_H */ diff --git a/arch/powerpc/include/asm/nohash/pgalloc.h b/arch/powerpc/include/asm/nohash/pgalloc.h new file mode 100644 index 000000000000..b39ec956d71e --- /dev/null +++ b/arch/powerpc/include/asm/nohash/pgalloc.h @@ -0,0 +1,23 @@ +#ifndef _ASM_POWERPC_NOHASH_PGALLOC_H +#define _ASM_POWERPC_NOHASH_PGALLOC_H + +#include <linux/mm.h> + +extern void tlb_remove_table(struct mmu_gather *tlb, void *table); +#ifdef CONFIG_PPC64 +extern void tlb_flush_pgtable(struct mmu_gather *tlb, unsigned long address); +#else +/* 44x etc which is BOOKE not BOOK3E */ +static inline void tlb_flush_pgtable(struct mmu_gather *tlb, + unsigned long address) +{ + +} +#endif /* !CONFIG_PPC_BOOK3E */ + +#ifdef CONFIG_PPC64 +#include <asm/nohash/64/pgalloc.h> +#else +#include <asm/nohash/32/pgalloc.h> +#endif +#endif /* _ASM_POWERPC_NOHASH_PGALLOC_H */ diff --git a/arch/powerpc/include/asm/opal-api.h b/arch/powerpc/include/asm/opal-api.h index f8faaaeeca1e..9bb8ddf0be37 100644 --- a/arch/powerpc/include/asm/opal-api.h +++ b/arch/powerpc/include/asm/opal-api.h @@ -368,16 +368,16 @@ enum OpalLPCAddressType { }; enum opal_msg_type { - OPAL_MSG_ASYNC_COMP = 0, /* params[0] = token, params[1] = rc, + OPAL_MSG_ASYNC_COMP = 0, /* params[0] = token, params[1] = rc, * additional params function-specific */ - OPAL_MSG_MEM_ERR, - OPAL_MSG_EPOW, - OPAL_MSG_SHUTDOWN, /* params[0] = 1 reboot, 0 shutdown */ - OPAL_MSG_HMI_EVT, - OPAL_MSG_DPO, - OPAL_MSG_PRD, - OPAL_MSG_OCC, + OPAL_MSG_MEM_ERR = 1, + OPAL_MSG_EPOW = 2, + OPAL_MSG_SHUTDOWN = 3, /* params[0] = 1 reboot, 0 shutdown */ + OPAL_MSG_HMI_EVT = 4, + OPAL_MSG_DPO = 5, + OPAL_MSG_PRD = 6, + OPAL_MSG_OCC = 7, OPAL_MSG_TYPE_MAX, }; diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h index ab3d8977bacd..51db3a37bced 100644 --- a/arch/powerpc/include/asm/page.h +++ b/arch/powerpc/include/asm/page.h @@ -288,7 +288,11 @@ extern long long virt_phys_offset; #ifndef __ASSEMBLY__ +#ifdef CONFIG_PPC_BOOK3S_64 +#include <asm/pgtable-be-types.h> +#else #include <asm/pgtable-types.h> +#endif typedef struct { signed long pd; } hugepd_t; @@ -312,12 +316,20 @@ void arch_free_page(struct page *page, int order); #endif struct vm_area_struct; - +#ifdef CONFIG_PPC_BOOK3S_64 +/* + * For BOOK3s 64 with 4k and 64K linux page size + * we want to use pointers, because the page table + * actually store pfn + */ +typedef pte_t *pgtable_t; +#else #if defined(CONFIG_PPC_64K_PAGES) && defined(CONFIG_PPC64) typedef pte_t *pgtable_t; #else typedef struct page *pgtable_t; #endif +#endif #include <asm-generic/memory_model.h> #endif /* __ASSEMBLY__ */ diff --git a/arch/powerpc/include/asm/page_64.h b/arch/powerpc/include/asm/page_64.h index d908a46d05c0..dd5f0712afa2 100644 --- a/arch/powerpc/include/asm/page_64.h +++ b/arch/powerpc/include/asm/page_64.h @@ -93,7 +93,7 @@ extern u64 ppc64_pft_size; #define SLICE_LOW_TOP (0x100000000ul) #define SLICE_NUM_LOW (SLICE_LOW_TOP >> SLICE_LOW_SHIFT) -#define SLICE_NUM_HIGH (PGTABLE_RANGE >> SLICE_HIGH_SHIFT) +#define SLICE_NUM_HIGH (H_PGTABLE_RANGE >> SLICE_HIGH_SHIFT) #define GET_LOW_SLICE_INDEX(addr) ((addr) >> SLICE_LOW_SHIFT) #define GET_HIGH_SLICE_INDEX(addr) ((addr) >> SLICE_HIGH_SHIFT) @@ -128,8 +128,6 @@ extern void slice_set_user_psize(struct mm_struct *mm, unsigned int psize); extern void slice_set_range_psize(struct mm_struct *mm, unsigned long start, unsigned long len, unsigned int psize); -#define slice_mm_new_context(mm) ((mm)->context.id == MMU_NO_CONTEXT) - #endif /* __ASSEMBLY__ */ #else #define slice_init() @@ -151,7 +149,6 @@ do { \ #define slice_set_range_psize(mm, start, len, psize) \ slice_set_user_psize((mm), (psize)) -#define slice_mm_new_context(mm) 1 #endif /* CONFIG_PPC_MM_SLICES */ #ifdef CONFIG_HUGETLB_PAGE diff --git a/arch/powerpc/include/asm/pci-bridge.h b/arch/powerpc/include/asm/pci-bridge.h index f5056e3394b4..467c0b05b6fb 100644 --- a/arch/powerpc/include/asm/pci-bridge.h +++ b/arch/powerpc/include/asm/pci-bridge.h @@ -17,33 +17,34 @@ struct device_node; * PCI controller operations */ struct pci_controller_ops { - void (*dma_dev_setup)(struct pci_dev *dev); + void (*dma_dev_setup)(struct pci_dev *pdev); void (*dma_bus_setup)(struct pci_bus *bus); - int (*probe_mode)(struct pci_bus *); + int (*probe_mode)(struct pci_bus *bus); /* Called when pci_enable_device() is called. Returns true to * allow assignment/enabling of the device. */ - bool (*enable_device_hook)(struct pci_dev *); + bool (*enable_device_hook)(struct pci_dev *pdev); - void (*disable_device)(struct pci_dev *); + void (*disable_device)(struct pci_dev *pdev); - void (*release_device)(struct pci_dev *); + void (*release_device)(struct pci_dev *pdev); /* Called during PCI resource reassignment */ - resource_size_t (*window_alignment)(struct pci_bus *, unsigned long type); - void (*reset_secondary_bus)(struct pci_dev *dev); + resource_size_t (*window_alignment)(struct pci_bus *bus, + unsigned long type); + void (*reset_secondary_bus)(struct pci_dev *pdev); #ifdef CONFIG_PCI_MSI - int (*setup_msi_irqs)(struct pci_dev *dev, + int (*setup_msi_irqs)(struct pci_dev *pdev, int nvec, int type); - void (*teardown_msi_irqs)(struct pci_dev *dev); + void (*teardown_msi_irqs)(struct pci_dev *pdev); #endif - int (*dma_set_mask)(struct pci_dev *dev, u64 dma_mask); - u64 (*dma_get_required_mask)(struct pci_dev *dev); + int (*dma_set_mask)(struct pci_dev *pdev, u64 dma_mask); + u64 (*dma_get_required_mask)(struct pci_dev *pdev); - void (*shutdown)(struct pci_controller *); + void (*shutdown)(struct pci_controller *hose); }; /* @@ -208,14 +209,14 @@ struct pci_dn { #ifdef CONFIG_EEH struct eeh_dev *edev; /* eeh device */ #endif -#define IODA_INVALID_PE (-1) +#define IODA_INVALID_PE 0xFFFFFFFF #ifdef CONFIG_PPC_POWERNV - int pe_number; + unsigned int pe_number; int vf_index; /* VF index in the PF */ #ifdef CONFIG_PCI_IOV u16 vfs_expanded; /* number of VFs IOV BAR expanded */ u16 num_vfs; /* number of VFs enabled*/ - int *pe_num_map; /* PE# for the first VF PE or array */ + unsigned int *pe_num_map; /* PE# for the first VF PE or array */ bool m64_single_mode; /* Use M64 BAR in Single Mode */ #define IODA_INVALID_M64 (-1) int (*m64_map)[PCI_SRIOV_NUM_BARS]; @@ -234,7 +235,9 @@ extern struct pci_dn *pci_get_pdn_by_devfn(struct pci_bus *bus, extern struct pci_dn *pci_get_pdn(struct pci_dev *pdev); extern struct pci_dn *add_dev_pci_data(struct pci_dev *pdev); extern void remove_dev_pci_data(struct pci_dev *pdev); -extern void *update_dn_pci_info(struct device_node *dn, void *data); +extern struct pci_dn *pci_add_device_node_info(struct pci_controller *hose, + struct device_node *dn); +extern void pci_remove_device_node_info(struct device_node *dn); static inline int pci_device_from_OF_node(struct device_node *np, u8 *bus, u8 *devfn) @@ -256,13 +259,13 @@ static inline struct eeh_dev *pdn_to_eeh_dev(struct pci_dn *pdn) #endif /** Find the bus corresponding to the indicated device node */ -extern struct pci_bus *pcibios_find_pci_bus(struct device_node *dn); +extern struct pci_bus *pci_find_bus_by_node(struct device_node *dn); /** Remove all of the PCI devices under this bus */ -extern void pcibios_remove_pci_devices(struct pci_bus *bus); +extern void pci_hp_remove_devices(struct pci_bus *bus); /** Discover new pci devices under this bus, and add them */ -extern void pcibios_add_pci_devices(struct pci_bus *bus); +extern void pci_hp_add_devices(struct pci_bus *bus); extern void isa_bridge_find_early(struct pci_controller *hose); diff --git a/arch/powerpc/include/asm/pgalloc.h b/arch/powerpc/include/asm/pgalloc.h index fc3ee06eab87..0413457ba11d 100644 --- a/arch/powerpc/include/asm/pgalloc.h +++ b/arch/powerpc/include/asm/pgalloc.h @@ -1,25 +1,12 @@ #ifndef _ASM_POWERPC_PGALLOC_H #define _ASM_POWERPC_PGALLOC_H -#ifdef __KERNEL__ #include <linux/mm.h> -#ifdef CONFIG_PPC_BOOK3E -extern void tlb_flush_pgtable(struct mmu_gather *tlb, unsigned long address); -#else /* CONFIG_PPC_BOOK3E */ -static inline void tlb_flush_pgtable(struct mmu_gather *tlb, - unsigned long address) -{ -} -#endif /* !CONFIG_PPC_BOOK3E */ - -extern void tlb_remove_table(struct mmu_gather *tlb, void *table); - -#ifdef CONFIG_PPC64 -#include <asm/pgalloc-64.h> +#ifdef CONFIG_PPC_BOOK3S +#include <asm/book3s/pgalloc.h> #else -#include <asm/pgalloc-32.h> +#include <asm/nohash/pgalloc.h> #endif -#endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_PGALLOC_H */ diff --git a/arch/powerpc/include/asm/pgtable-be-types.h b/arch/powerpc/include/asm/pgtable-be-types.h new file mode 100644 index 000000000000..e2bf208605b1 --- /dev/null +++ b/arch/powerpc/include/asm/pgtable-be-types.h @@ -0,0 +1,92 @@ +#ifndef _ASM_POWERPC_PGTABLE_BE_TYPES_H +#define _ASM_POWERPC_PGTABLE_BE_TYPES_H + +#include <asm/cmpxchg.h> + +/* PTE level */ +typedef struct { __be64 pte; } pte_t; +#define __pte(x) ((pte_t) { cpu_to_be64(x) }) +static inline unsigned long pte_val(pte_t x) +{ + return be64_to_cpu(x.pte); +} + +static inline __be64 pte_raw(pte_t x) +{ + return x.pte; +} + +/* PMD level */ +#ifdef CONFIG_PPC64 +typedef struct { __be64 pmd; } pmd_t; +#define __pmd(x) ((pmd_t) { cpu_to_be64(x) }) +static inline unsigned long pmd_val(pmd_t x) +{ + return be64_to_cpu(x.pmd); +} + +static inline __be64 pmd_raw(pmd_t x) +{ + return x.pmd; +} + +/* + * 64 bit hash always use 4 level table. Everybody else use 4 level + * only for 4K page size. + */ +#if defined(CONFIG_PPC_BOOK3S_64) || !defined(CONFIG_PPC_64K_PAGES) +typedef struct { __be64 pud; } pud_t; +#define __pud(x) ((pud_t) { cpu_to_be64(x) }) +static inline unsigned long pud_val(pud_t x) +{ + return be64_to_cpu(x.pud); +} +#endif /* CONFIG_PPC_BOOK3S_64 || !CONFIG_PPC_64K_PAGES */ +#endif /* CONFIG_PPC64 */ + +/* PGD level */ +typedef struct { __be64 pgd; } pgd_t; +#define __pgd(x) ((pgd_t) { cpu_to_be64(x) }) +static inline unsigned long pgd_val(pgd_t x) +{ + return be64_to_cpu(x.pgd); +} + +/* Page protection bits */ +typedef struct { unsigned long pgprot; } pgprot_t; +#define pgprot_val(x) ((x).pgprot) +#define __pgprot(x) ((pgprot_t) { (x) }) + +/* + * With hash config 64k pages additionally define a bigger "real PTE" type that + * gathers the "second half" part of the PTE for pseudo 64k pages + */ +#if defined(CONFIG_PPC_64K_PAGES) && defined(CONFIG_PPC_STD_MMU_64) +typedef struct { pte_t pte; unsigned long hidx; } real_pte_t; +#else +typedef struct { pte_t pte; } real_pte_t; +#endif + +static inline bool pte_xchg(pte_t *ptep, pte_t old, pte_t new) +{ + unsigned long *p = (unsigned long *)ptep; + __be64 prev; + + prev = (__force __be64)__cmpxchg_u64(p, (__force unsigned long)pte_raw(old), + (__force unsigned long)pte_raw(new)); + + return pte_raw(old) == prev; +} + +static inline bool pmd_xchg(pmd_t *pmdp, pmd_t old, pmd_t new) +{ + unsigned long *p = (unsigned long *)pmdp; + __be64 prev; + + prev = (__force __be64)__cmpxchg_u64(p, (__force unsigned long)pmd_raw(old), + (__force unsigned long)pmd_raw(new)); + + return pmd_raw(old) == prev; +} + +#endif /* _ASM_POWERPC_PGTABLE_BE_TYPES_H */ diff --git a/arch/powerpc/include/asm/pgtable-types.h b/arch/powerpc/include/asm/pgtable-types.h index 43140f8b0592..e7f4f3e0fcde 100644 --- a/arch/powerpc/include/asm/pgtable-types.h +++ b/arch/powerpc/include/asm/pgtable-types.h @@ -1,9 +1,6 @@ #ifndef _ASM_POWERPC_PGTABLE_TYPES_H #define _ASM_POWERPC_PGTABLE_TYPES_H -#ifdef CONFIG_STRICT_MM_TYPECHECKS -/* These are used to make use of C type-checking. */ - /* PTE level */ typedef struct { pte_basic_t pte; } pte_t; #define __pte(x) ((pte_t) { (x) }) @@ -48,49 +45,6 @@ typedef struct { unsigned long pgprot; } pgprot_t; #define pgprot_val(x) ((x).pgprot) #define __pgprot(x) ((pgprot_t) { (x) }) -#else - -/* - * .. while these make it easier on the compiler - */ - -typedef pte_basic_t pte_t; -#define __pte(x) (x) -static inline pte_basic_t pte_val(pte_t pte) -{ - return pte; -} - -#ifdef CONFIG_PPC64 -typedef unsigned long pmd_t; -#define __pmd(x) (x) -static inline unsigned long pmd_val(pmd_t pmd) -{ - return pmd; -} - -#if defined(CONFIG_PPC_BOOK3S_64) || !defined(CONFIG_PPC_64K_PAGES) -typedef unsigned long pud_t; -#define __pud(x) (x) -static inline unsigned long pud_val(pud_t pud) -{ - return pud; -} -#endif /* CONFIG_PPC_BOOK3S_64 || !CONFIG_PPC_64K_PAGES */ -#endif /* CONFIG_PPC64 */ - -typedef unsigned long pgd_t; -#define __pgd(x) (x) -static inline unsigned long pgd_val(pgd_t pgd) -{ - return pgd; -} - -typedef unsigned long pgprot_t; -#define pgprot_val(x) (x) -#define __pgprot(x) (x) - -#endif /* CONFIG_STRICT_MM_TYPECHECKS */ /* * With hash config 64k pages additionally define a bigger "real PTE" type that * gathers the "second half" part of the PTE for pseudo 64k pages @@ -100,4 +54,16 @@ typedef struct { pte_t pte; unsigned long hidx; } real_pte_t; #else typedef struct { pte_t pte; } real_pte_t; #endif + +#ifdef CONFIG_PPC_STD_MMU_64 +#include <asm/cmpxchg.h> + +static inline bool pte_xchg(pte_t *ptep, pte_t old, pte_t new) +{ + unsigned long *p = (unsigned long *)ptep; + + return pte_val(old) == __cmpxchg_u64(p, pte_val(old), pte_val(new)); +} +#endif + #endif /* _ASM_POWERPC_PGTABLE_TYPES_H */ diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h index 7ab04fc59e24..1d035c1cc889 100644 --- a/arch/powerpc/include/asm/ppc-opcode.h +++ b/arch/powerpc/include/asm/ppc-opcode.h @@ -131,6 +131,7 @@ /* sorted alphabetically */ #define PPC_INST_BHRBE 0x7c00025c #define PPC_INST_CLRBHRB 0x7c00035c +#define PPC_INST_CP_ABORT 0x7c00068c #define PPC_INST_DCBA 0x7c0005ec #define PPC_INST_DCBA_MASK 0xfc0007fe #define PPC_INST_DCBAL 0x7c2005ec @@ -285,6 +286,7 @@ #endif /* Deal with instructions that older assemblers aren't aware of */ +#define PPC_CP_ABORT stringify_in_c(.long PPC_INST_CP_ABORT) #define PPC_DCBAL(a, b) stringify_in_c(.long PPC_INST_DCBAL | \ __PPC_RA(a) | __PPC_RB(b)) #define PPC_DCBZL(a, b) stringify_in_c(.long PPC_INST_DCBZL | \ diff --git a/arch/powerpc/include/asm/ppc-pci.h b/arch/powerpc/include/asm/ppc-pci.h index ca0c5bff7849..8753e4eb9ab5 100644 --- a/arch/powerpc/include/asm/ppc-pci.h +++ b/arch/powerpc/include/asm/ppc-pci.h @@ -33,9 +33,9 @@ extern struct pci_dev *isa_bridge_pcidev; /* may be NULL if no ISA bus */ struct device_node; struct pci_dn; -typedef void *(*traverse_func)(struct device_node *me, void *data); -void *traverse_pci_devices(struct device_node *start, traverse_func pre, - void *data); +void *pci_traverse_device_nodes(struct device_node *start, + void *(*fn)(struct device_node *, void *), + void *data); void *traverse_pci_dn(struct pci_dn *root, void *(*fn)(struct pci_dn *, void *), void *data); diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h index 499d9f89435a..2b31632376a5 100644 --- a/arch/powerpc/include/asm/ppc_asm.h +++ b/arch/powerpc/include/asm/ppc_asm.h @@ -427,7 +427,10 @@ END_FTR_SECTION_IFCLR(CPU_FTR_601) li r4,1024; \ mtctr r4; \ lis r4,KERNELBASE@h; \ + .machine push; \ + .machine "power4"; \ 0: tlbie r4; \ + .machine pop; \ addi r4,r4,0x1000; \ bdnz 0b #endif diff --git a/arch/powerpc/include/asm/pte-common.h b/arch/powerpc/include/asm/pte-common.h index 1ec67b043065..2eeaf80d41b7 100644 --- a/arch/powerpc/include/asm/pte-common.h +++ b/arch/powerpc/include/asm/pte-common.h @@ -76,6 +76,16 @@ */ #ifndef __ASSEMBLY__ extern unsigned long bad_call_to_PMD_PAGE_SIZE(void); + +/* + * Don't just check for any non zero bits in __PAGE_USER, since for book3e + * and PTE_64BIT, PAGE_KERNEL_X contains _PAGE_BAP_SR which is also in + * _PAGE_USER. Need to explicitly match _PAGE_BAP_UR bit in that case too. + */ +static inline bool pte_user(pte_t pte) +{ + return (pte_val(pte) & _PAGE_USER) == _PAGE_USER; +} #endif /* __ASSEMBLY__ */ /* Location of the PFN in the PTE. Most 32-bit platforms use the same @@ -184,13 +194,6 @@ extern unsigned long bad_call_to_PMD_PAGE_SIZE(void); /* Make modules code happy. We don't set RO yet */ #define PAGE_KERNEL_EXEC PAGE_KERNEL_X -/* - * Don't just check for any non zero bits in __PAGE_USER, since for book3e - * and PTE_64BIT, PAGE_KERNEL_X contains _PAGE_BAP_SR which is also in - * _PAGE_USER. Need to explicitly match _PAGE_BAP_UR bit in that case too. - */ -#define pte_user(val) ((val & _PAGE_USER) == _PAGE_USER) - /* Advertise special mapping type for AGP */ #define PAGE_AGP (PAGE_KERNEL_NC) #define HAVE_PAGE_AGP @@ -198,3 +201,12 @@ extern unsigned long bad_call_to_PMD_PAGE_SIZE(void); /* Advertise support for _PAGE_SPECIAL */ #define __HAVE_ARCH_PTE_SPECIAL +#ifndef _PAGE_READ +/* if not defined, we should not find _PAGE_WRITE too */ +#define _PAGE_READ 0 +#define _PAGE_WRITE _PAGE_RW +#endif + +#ifndef H_PAGE_4K_PFN +#define H_PAGE_4K_PFN 0 +#endif diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index f5f4c66bbbc9..c1e82e968506 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -347,6 +347,7 @@ #define LPCR_LPES_SH 2 #define LPCR_RMI 0x00000002 /* real mode is cache inhibit */ #define LPCR_HDICE 0x00000001 /* Hyp Decr enable (HV,PR,EE) */ +#define LPCR_UPRT 0x00400000 /* Use Process Table (ISA 3) */ #ifndef SPRN_LPID #define SPRN_LPID 0x13F /* Logical Partition Identifier */ #endif @@ -587,6 +588,7 @@ #define SPRN_PIR 0x3FF /* Processor Identification Register */ #endif #define SPRN_TIR 0x1BE /* Thread Identification Register */ +#define SPRN_PTCR 0x1D0 /* Partition table control Register */ #define SPRN_PSPB 0x09F /* Problem State Priority Boost reg */ #define SPRN_PTEHI 0x3D5 /* 981 7450 PTE HI word (S/W TLB load) */ #define SPRN_PTELO 0x3D6 /* 982 7450 PTE LO word (S/W TLB load) */ @@ -1182,6 +1184,7 @@ #define PVR_970GX 0x0045 #define PVR_POWER7p 0x004A #define PVR_POWER8E 0x004B +#define PVR_POWER8NVL 0x004C #define PVR_POWER8 0x004D #define PVR_BE 0x0070 #define PVR_PA6T 0x0090 diff --git a/arch/powerpc/include/asm/tlbflush.h b/arch/powerpc/include/asm/tlbflush.h index 9f77f85e3e99..1b38eea28e5a 100644 --- a/arch/powerpc/include/asm/tlbflush.h +++ b/arch/powerpc/include/asm/tlbflush.h @@ -58,6 +58,7 @@ extern void __flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr, #elif defined(CONFIG_PPC_STD_MMU_32) +#define MMU_NO_CONTEXT (0) /* * TLB flushing for "classic" hash-MMU 32-bit CPUs, 6xx, 7xx, 7xxx */ @@ -78,7 +79,7 @@ static inline void local_flush_tlb_mm(struct mm_struct *mm) } #elif defined(CONFIG_PPC_STD_MMU_64) -#include <asm/book3s/64/tlbflush-hash.h> +#include <asm/book3s/64/tlbflush.h> #else #error Unsupported MMU type #endif diff --git a/arch/powerpc/include/uapi/asm/perf_regs.h b/arch/powerpc/include/uapi/asm/perf_regs.h new file mode 100644 index 000000000000..6a93209748a1 --- /dev/null +++ b/arch/powerpc/include/uapi/asm/perf_regs.h @@ -0,0 +1,50 @@ +#ifndef _UAPI_ASM_POWERPC_PERF_REGS_H +#define _UAPI_ASM_POWERPC_PERF_REGS_H + +enum perf_event_powerpc_regs { + PERF_REG_POWERPC_R0, + PERF_REG_POWERPC_R1, + PERF_REG_POWERPC_R2, + PERF_REG_POWERPC_R3, + PERF_REG_POWERPC_R4, + PERF_REG_POWERPC_R5, + PERF_REG_POWERPC_R6, + PERF_REG_POWERPC_R7, + PERF_REG_POWERPC_R8, + PERF_REG_POWERPC_R9, + PERF_REG_POWERPC_R10, + PERF_REG_POWERPC_R11, + PERF_REG_POWERPC_R12, + PERF_REG_POWERPC_R13, + PERF_REG_POWERPC_R14, + PERF_REG_POWERPC_R15, + PERF_REG_POWERPC_R16, + PERF_REG_POWERPC_R17, + PERF_REG_POWERPC_R18, + PERF_REG_POWERPC_R19, + PERF_REG_POWERPC_R20, + PERF_REG_POWERPC_R21, + PERF_REG_POWERPC_R22, + PERF_REG_POWERPC_R23, + PERF_REG_POWERPC_R24, + PERF_REG_POWERPC_R25, + PERF_REG_POWERPC_R26, + PERF_REG_POWERPC_R27, + PERF_REG_POWERPC_R28, + PERF_REG_POWERPC_R29, + PERF_REG_POWERPC_R30, + PERF_REG_POWERPC_R31, + PERF_REG_POWERPC_NIP, + PERF_REG_POWERPC_MSR, + PERF_REG_POWERPC_ORIG_R3, + PERF_REG_POWERPC_CTR, + PERF_REG_POWERPC_LINK, + PERF_REG_POWERPC_XER, + PERF_REG_POWERPC_CCR, + PERF_REG_POWERPC_SOFTE, + PERF_REG_POWERPC_TRAP, + PERF_REG_POWERPC_DAR, + PERF_REG_POWERPC_DSISR, + PERF_REG_POWERPC_MAX, +}; +#endif /* _UAPI_ASM_POWERPC_PERF_REGS_H */ diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index c9370d4e36bd..9ea09551a2cd 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -438,7 +438,11 @@ int main(void) DEFINE(BUG_ENTRY_SIZE, sizeof(struct bug_entry)); #endif +#ifdef MAX_PGD_TABLE_SIZE + DEFINE(PGD_TABLE_SIZE, MAX_PGD_TABLE_SIZE); +#else DEFINE(PGD_TABLE_SIZE, PGD_TABLE_SIZE); +#endif DEFINE(PTE_SIZE, sizeof(pte_t)); #ifdef CONFIG_KVM diff --git a/arch/powerpc/kernel/btext.c b/arch/powerpc/kernel/btext.c index 41c011cb6070..8275858a434d 100644 --- a/arch/powerpc/kernel/btext.c +++ b/arch/powerpc/kernel/btext.c @@ -162,7 +162,7 @@ void btext_map(void) offset = ((unsigned long) dispDeviceBase) - base; size = dispDeviceRowBytes * dispDeviceRect[3] + offset + dispDeviceRect[0]; - vbase = __ioremap(base, size, _PAGE_NO_CACHE); + vbase = __ioremap(base, size, pgprot_val(pgprot_noncached_wc(__pgprot(0)))); if (vbase == 0) return; logicalDisplayBase = vbase + offset; diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c index 6c662b8de90d..eeeacf6235a3 100644 --- a/arch/powerpc/kernel/cputable.c +++ b/arch/powerpc/kernel/cputable.c @@ -63,7 +63,6 @@ extern void __setup_cpu_745x(unsigned long offset, struct cpu_spec* spec); extern void __setup_cpu_ppc970(unsigned long offset, struct cpu_spec* spec); extern void __setup_cpu_ppc970MP(unsigned long offset, struct cpu_spec* spec); extern void __setup_cpu_pa6t(unsigned long offset, struct cpu_spec* spec); -extern void __setup_cpu_a2(unsigned long offset, struct cpu_spec* spec); extern void __restore_cpu_pa6t(void); extern void __restore_cpu_ppc970(void); extern void __setup_cpu_power7(unsigned long offset, struct cpu_spec* spec); @@ -72,7 +71,6 @@ extern void __setup_cpu_power8(unsigned long offset, struct cpu_spec* spec); extern void __restore_cpu_power8(void); extern void __setup_cpu_power9(unsigned long offset, struct cpu_spec* spec); extern void __restore_cpu_power9(void); -extern void __restore_cpu_a2(void); extern void __flush_tlb_power7(unsigned int action); extern void __flush_tlb_power8(unsigned int action); extern void __flush_tlb_power9(unsigned int action); diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c index 6544017eb90b..c9bc78e9c610 100644 --- a/arch/powerpc/kernel/eeh.c +++ b/arch/powerpc/kernel/eeh.c @@ -48,7 +48,7 @@ /** Overview: - * EEH, or "Extended Error Handling" is a PCI bridge technology for + * EEH, or "Enhanced Error Handling" is a PCI bridge technology for * dealing with PCI bus errors that can't be dealt with within the * usual PCI framework, except by check-stopping the CPU. Systems * that are designed for high-availability/reliability cannot afford @@ -1068,7 +1068,7 @@ void eeh_add_device_early(struct pci_dn *pdn) struct pci_controller *phb; struct eeh_dev *edev = pdn_to_eeh_dev(pdn); - if (!edev || !eeh_enabled()) + if (!edev) return; if (!eeh_has_flag(EEH_PROBE_MODE_DEVTREE)) @@ -1336,14 +1336,11 @@ static int eeh_pe_change_owner(struct eeh_pe *pe) id->subdevice != pdev->subsystem_device) continue; - goto reset; + return eeh_pe_reset_and_recover(pe); } } return eeh_unfreeze_pe(pe, true); - -reset: - return eeh_pe_reset_and_recover(pe); } /** diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c index fb6207d2c604..2714a3b81d24 100644 --- a/arch/powerpc/kernel/eeh_driver.c +++ b/arch/powerpc/kernel/eeh_driver.c @@ -171,6 +171,16 @@ static void *eeh_dev_save_state(void *data, void *userdata) if (!edev) return NULL; + /* + * We cannot access the config space on some adapters. + * Otherwise, it will cause fenced PHB. We don't save + * the content in their config space and will restore + * from the initial config space saved when the EEH + * device is created. + */ + if (edev->pe && (edev->pe->state & EEH_PE_CFG_RESTRICTED)) + return NULL; + pdev = eeh_dev_to_pci_dev(edev); if (!pdev) return NULL; @@ -312,6 +322,19 @@ static void *eeh_dev_restore_state(void *data, void *userdata) if (!edev) return NULL; + /* + * The content in the config space isn't saved because + * the blocked config space on some adapters. We have + * to restore the initial saved config space when the + * EEH device is created. + */ + if (edev->pe && (edev->pe->state & EEH_PE_CFG_RESTRICTED)) { + if (list_is_last(&edev->list, &edev->pe->edevs)) + eeh_pe_restore_bars(edev->pe); + + return NULL; + } + pdev = eeh_dev_to_pci_dev(edev); if (!pdev) return NULL; @@ -552,7 +575,7 @@ static int eeh_clear_pe_frozen_state(struct eeh_pe *pe, int eeh_pe_reset_and_recover(struct eeh_pe *pe) { - int result, ret; + int ret; /* Bail if the PE is being recovered */ if (pe->state & EEH_PE_RECOVERING) @@ -564,9 +587,6 @@ int eeh_pe_reset_and_recover(struct eeh_pe *pe) /* Save states */ eeh_pe_dev_traverse(pe, eeh_dev_save_state, NULL); - /* Report error */ - eeh_pe_dev_traverse(pe, eeh_report_error, &result); - /* Issue reset */ ret = eeh_reset_pe(pe); if (ret) { @@ -581,15 +601,9 @@ int eeh_pe_reset_and_recover(struct eeh_pe *pe) return ret; } - /* Notify completion of reset */ - eeh_pe_dev_traverse(pe, eeh_report_reset, &result); - /* Restore device state */ eeh_pe_dev_traverse(pe, eeh_dev_restore_state, NULL); - /* Resume */ - eeh_pe_dev_traverse(pe, eeh_report_resume, NULL); - /* Clear recovery mode */ eeh_pe_state_clear(pe, EEH_PE_RECOVERING); @@ -621,7 +635,7 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus, * We don't remove the corresponding PE instances because * we need the information afterwords. The attached EEH * devices are expected to be attached soon when calling - * into pcibios_add_pci_devices(). + * into pci_hp_add_devices(). */ eeh_pe_state_mark(pe, EEH_PE_KEEP); if (bus) { @@ -630,7 +644,7 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus, } else { eeh_pe_state_clear(pe, EEH_PE_PRI_BUS); pci_lock_rescan_remove(); - pcibios_remove_pci_devices(bus); + pci_hp_remove_devices(bus); pci_unlock_rescan_remove(); } } else if (frozen_bus) { @@ -681,7 +695,7 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus, if (pe->type & EEH_PE_VF) eeh_add_virt_device(edev, NULL); else - pcibios_add_pci_devices(bus); + pci_hp_add_devices(bus); } else if (frozen_bus && rmv_data->removed) { pr_info("EEH: Sleep 5s ahead of partial hotplug\n"); ssleep(5); @@ -691,7 +705,7 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus, if (pe->type & EEH_PE_VF) eeh_add_virt_device(edev, NULL); else - pcibios_add_pci_devices(frozen_bus); + pci_hp_add_devices(frozen_bus); } eeh_pe_state_clear(pe, EEH_PE_KEEP); @@ -896,7 +910,7 @@ perm_error: eeh_pe_dev_mode_mark(pe, EEH_DEV_REMOVED); pci_lock_rescan_remove(); - pcibios_remove_pci_devices(frozen_bus); + pci_hp_remove_devices(frozen_bus); pci_unlock_rescan_remove(); } } @@ -981,7 +995,7 @@ static void eeh_handle_special_event(void) bus = eeh_pe_bus_get(phb_pe); eeh_pe_dev_traverse(pe, eeh_report_failure, NULL); - pcibios_remove_pci_devices(bus); + pci_hp_remove_devices(bus); } pci_unlock_rescan_remove(); } diff --git a/arch/powerpc/kernel/eeh_event.c b/arch/powerpc/kernel/eeh_event.c index 4eefb6e34dbb..82e7327e3cd0 100644 --- a/arch/powerpc/kernel/eeh_event.c +++ b/arch/powerpc/kernel/eeh_event.c @@ -36,7 +36,7 @@ static DEFINE_SPINLOCK(eeh_eventlist_lock); static struct semaphore eeh_eventlist_sem; -LIST_HEAD(eeh_eventlist); +static LIST_HEAD(eeh_eventlist); /** * eeh_event_handler - Dispatch EEH events. diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c index eea48d8baf49..f0520da85759 100644 --- a/arch/powerpc/kernel/eeh_pe.c +++ b/arch/powerpc/kernel/eeh_pe.c @@ -249,7 +249,7 @@ static void *__eeh_pe_get(void *data, void *flag) } else { if (edev->pe_config_addr && (edev->pe_config_addr == pe->addr)) - return pe; + return pe; } /* Try BDF address */ diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index 39a79c89a4b6..73e461a3dfbb 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -37,6 +37,7 @@ #include <asm/hw_irq.h> #include <asm/context_tracking.h> #include <asm/tm.h> +#include <asm/ppc-opcode.h> /* * System calls. @@ -509,6 +510,14 @@ BEGIN_FTR_SECTION ldarx r6,0,r1 END_FTR_SECTION_IFSET(CPU_FTR_STCX_CHECKS_ADDRESS) +BEGIN_FTR_SECTION +/* + * A cp_abort (copy paste abort) here ensures that when context switching, a + * copy from one process can't leak into the paste of another. + */ + PPC_CP_ABORT +END_FTR_SECTION_IFSET(CPU_FTR_ARCH_300) + #ifdef CONFIG_PPC_BOOK3S /* Cancel all explict user streams as they will have no use after context * switch and will stop the HW from creating streams itself @@ -520,7 +529,10 @@ END_FTR_SECTION_IFSET(CPU_FTR_STCX_CHECKS_ADDRESS) std r6,PACACURRENT(r13) /* Set new 'current' */ ld r8,KSP(r4) /* new stack pointer */ -#ifdef CONFIG_PPC_BOOK3S +#ifdef CONFIG_PPC_STD_MMU_64 +BEGIN_MMU_FTR_SECTION + b 2f +END_MMU_FTR_SECTION_IFSET(MMU_FTR_RADIX) BEGIN_FTR_SECTION clrrdi r6,r8,28 /* get its ESID */ clrrdi r9,r1,28 /* get current sp ESID */ @@ -566,7 +578,7 @@ END_MMU_FTR_SECTION_IFSET(MMU_FTR_1T_SEGMENT) slbmte r7,r0 isync 2: -#endif /* !CONFIG_PPC_BOOK3S */ +#endif /* CONFIG_PPC_STD_MMU_64 */ CURRENT_THREAD_INFO(r7, r8) /* base of new stack */ /* Note: this uses SWITCH_FRAME_SIZE rather than INT_FRAME_SIZE diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 7716cebf4b8e..4c9440629128 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -189,7 +189,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206) #endif /* CONFIG_PPC_P7_NAP */ EXCEPTION_PROLOG_0(PACA_EXMC) BEGIN_FTR_SECTION - b machine_check_pSeries_early + b machine_check_powernv_early FTR_SECTION_ELSE b machine_check_pSeries_0 ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE) @@ -209,11 +209,6 @@ data_access_slb_pSeries: EXCEPTION_PROLOG_1(PACA_EXSLB, KVMTEST, 0x380) std r3,PACA_EXSLB+EX_R3(r13) mfspr r3,SPRN_DAR -#ifdef __DISABLED__ - /* Keep that around for when we re-implement dynamic VSIDs */ - cmpdi r3,0 - bge slb_miss_user_pseries -#endif /* __DISABLED__ */ mfspr r12,SPRN_SRR1 #ifndef CONFIG_RELOCATABLE b slb_miss_realmode @@ -240,11 +235,6 @@ instruction_access_slb_pSeries: EXCEPTION_PROLOG_1(PACA_EXSLB, KVMTEST, 0x480) std r3,PACA_EXSLB+EX_R3(r13) mfspr r3,SPRN_SRR0 /* SRR0 is faulting address */ -#ifdef __DISABLED__ - /* Keep that around for when we re-implement dynamic VSIDs */ - cmpdi r3,0 - bge slb_miss_user_pseries -#endif /* __DISABLED__ */ mfspr r12,SPRN_SRR1 #ifndef CONFIG_RELOCATABLE b slb_miss_realmode @@ -443,7 +433,7 @@ denorm_exception_hv: .align 7 /* moved from 0x200 */ -machine_check_pSeries_early: +machine_check_powernv_early: BEGIN_FTR_SECTION EXCEPTION_PROLOG_1(PACA_EXMC, NOTEST, 0x200) /* @@ -709,34 +699,6 @@ system_reset_fwnmi: #endif /* CONFIG_PPC_PSERIES */ -#ifdef __DISABLED__ -/* - * This is used for when the SLB miss handler has to go virtual, - * which doesn't happen for now anymore but will once we re-implement - * dynamic VSIDs for shared page tables - */ -slb_miss_user_pseries: - std r10,PACA_EXGEN+EX_R10(r13) - std r11,PACA_EXGEN+EX_R11(r13) - std r12,PACA_EXGEN+EX_R12(r13) - GET_SCRATCH0(r10) - ld r11,PACA_EXSLB+EX_R9(r13) - ld r12,PACA_EXSLB+EX_R3(r13) - std r10,PACA_EXGEN+EX_R13(r13) - std r11,PACA_EXGEN+EX_R9(r13) - std r12,PACA_EXGEN+EX_R3(r13) - clrrdi r12,r13,32 - mfmsr r10 - mfspr r11,SRR0 /* save SRR0 */ - ori r12,r12,slb_miss_user_common@l /* virt addr of handler */ - ori r10,r10,MSR_IR|MSR_DR|MSR_RI - mtspr SRR0,r12 - mfspr r12,SRR1 /* and SRR1 */ - mtspr SRR1,r10 - rfid - b . /* prevent spec. execution */ -#endif /* __DISABLED__ */ - #ifdef CONFIG_KVM_BOOK3S_64_HANDLER kvmppc_skip_interrupt: /* @@ -764,11 +726,10 @@ kvmppc_skip_Hinterrupt: #endif /* - * Code from here down to __end_handlers is invoked from the - * exception prologs above. Because the prologs assemble the - * addresses of these handlers using the LOAD_HANDLER macro, - * which uses an ori instruction, these handlers must be in - * the first 64k of the kernel image. + * Ensure that any handlers that get invoked from the exception prologs + * above are below the first 64KB (0x10000) of the kernel image because + * the prologs assemble the addresses of these handlers using the + * LOAD_HANDLER macro, which uses an ori instruction. */ /*** Common interrupt handlers ***/ @@ -953,11 +914,6 @@ hv_facility_unavailable_relon_trampoline: #endif STD_RELON_EXCEPTION_PSERIES(0x5700, 0x1700, altivec_assist) - /* Other future vectors */ - .align 7 - .globl __end_interrupts -__end_interrupts: - .align 7 system_call_entry: b system_call_common @@ -983,7 +939,13 @@ data_access_common: ld r3,PACA_EXGEN+EX_DAR(r13) lwz r4,PACA_EXGEN+EX_DSISR(r13) li r5,0x300 + std r3,_DAR(r1) + std r4,_DSISR(r1) +BEGIN_MMU_FTR_SECTION b do_hash_page /* Try to handle as hpte fault */ +MMU_FTR_SECTION_ELSE + b handle_page_fault +ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_RADIX) .align 7 .globl h_data_storage_common @@ -1008,73 +970,15 @@ instruction_access_common: ld r3,_NIP(r1) andis. r4,r12,0x5820 li r5,0x400 + std r3,_DAR(r1) + std r4,_DSISR(r1) +BEGIN_MMU_FTR_SECTION b do_hash_page /* Try to handle as hpte fault */ - - STD_EXCEPTION_COMMON(0xe20, h_instr_storage, unknown_exception) - -/* - * Here is the common SLB miss user that is used when going to virtual - * mode for SLB misses, that is currently not used - */ -#ifdef __DISABLED__ - .align 7 - .globl slb_miss_user_common -slb_miss_user_common: - mflr r10 - std r3,PACA_EXGEN+EX_DAR(r13) - stw r9,PACA_EXGEN+EX_CCR(r13) - std r10,PACA_EXGEN+EX_LR(r13) - std r11,PACA_EXGEN+EX_SRR0(r13) - bl slb_allocate_user - - ld r10,PACA_EXGEN+EX_LR(r13) - ld r3,PACA_EXGEN+EX_R3(r13) - lwz r9,PACA_EXGEN+EX_CCR(r13) - ld r11,PACA_EXGEN+EX_SRR0(r13) - mtlr r10 - beq- slb_miss_fault - - andi. r10,r12,MSR_RI /* check for unrecoverable exception */ - beq- unrecov_user_slb - mfmsr r10 - -.machine push -.machine "power4" - mtcrf 0x80,r9 -.machine pop - - clrrdi r10,r10,2 /* clear RI before setting SRR0/1 */ - mtmsrd r10,1 - - mtspr SRR0,r11 - mtspr SRR1,r12 - - ld r9,PACA_EXGEN+EX_R9(r13) - ld r10,PACA_EXGEN+EX_R10(r13) - ld r11,PACA_EXGEN+EX_R11(r13) - ld r12,PACA_EXGEN+EX_R12(r13) - ld r13,PACA_EXGEN+EX_R13(r13) - rfid - b . - -slb_miss_fault: - EXCEPTION_PROLOG_COMMON(0x380, PACA_EXGEN) - ld r4,PACA_EXGEN+EX_DAR(r13) - li r5,0 - std r4,_DAR(r1) - std r5,_DSISR(r1) +MMU_FTR_SECTION_ELSE b handle_page_fault +ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_RADIX) -unrecov_user_slb: - EXCEPTION_PROLOG_COMMON(0x4200, PACA_EXGEN) - RECONCILE_IRQ_STATE(r10, r11) - bl save_nvgprs -1: addi r3,r1,STACK_FRAME_OVERHEAD - bl unrecoverable_exception - b 1b - -#endif /* __DISABLED__ */ - + STD_EXCEPTION_COMMON(0xe20, h_instr_storage, unknown_exception) /* * Machine check is different because we use a different @@ -1230,10 +1134,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_VSX) STD_EXCEPTION_COMMON(0xf60, facility_unavailable, facility_unavailable_exception) STD_EXCEPTION_COMMON(0xf80, hv_facility_unavailable, facility_unavailable_exception) - .align 7 - .globl __end_handlers -__end_handlers: - /* Equivalents to the above handlers for relocation-on interrupt vectors */ STD_RELON_EXCEPTION_HV_OOL(0xe40, emulation_assist) MASKABLE_RELON_EXCEPTION_HV_OOL(0xe80, h_doorbell) @@ -1244,6 +1144,17 @@ __end_handlers: STD_RELON_EXCEPTION_PSERIES_OOL(0xf60, facility_unavailable) STD_RELON_EXCEPTION_HV_OOL(0xf80, hv_facility_unavailable) + /* + * The __end_interrupts marker must be past the out-of-line (OOL) + * handlers, so that they are copied to real address 0x100 when running + * a relocatable kernel. This ensures they can be reached from the short + * trampoline handlers (like 0x4f00, 0x4f20, etc.) which branch + * directly, without using LOAD_HANDLER(). + */ + .align 7 + .globl __end_interrupts +__end_interrupts: + #if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV) /* * Data area reserved for FWNMI option. @@ -1476,8 +1387,11 @@ slb_miss_realmode: stw r9,PACA_EXSLB+EX_CCR(r13) /* save CR in exc. frame */ std r10,PACA_EXSLB+EX_LR(r13) /* save LR */ +#ifdef CONFIG_PPC_STD_MMU_64 +BEGIN_MMU_FTR_SECTION bl slb_allocate_realmode - +END_MMU_FTR_SECTION_IFCLR(MMU_FTR_RADIX) +#endif /* All done -- return from exception. */ ld r10,PACA_EXSLB+EX_LR(r13) @@ -1485,7 +1399,9 @@ slb_miss_realmode: lwz r9,PACA_EXSLB+EX_CCR(r13) /* get saved CR */ mtlr r10 - +BEGIN_MMU_FTR_SECTION + b 2f +END_MMU_FTR_SECTION_IFSET(MMU_FTR_RADIX) andi. r10,r12,MSR_RI /* check for unrecoverable exception */ beq- 2f @@ -1536,9 +1452,7 @@ power4_fixup_nap: */ .align 7 do_hash_page: - std r3,_DAR(r1) - std r4,_DSISR(r1) - +#ifdef CONFIG_PPC_STD_MMU_64 andis. r0,r4,0xa410 /* weird error? */ bne- handle_page_fault /* if not, try to insert a HPTE */ andis. r0,r4,DSISR_DABRMATCH@h @@ -1566,6 +1480,7 @@ do_hash_page: /* Error */ blt- 13f +#endif /* CONFIG_PPC_STD_MMU_64 */ /* Here we have a page fault that hash_page can't handle. */ handle_page_fault: @@ -1592,6 +1507,7 @@ handle_dabr_fault: 12: b ret_from_except_lite +#ifdef CONFIG_PPC_STD_MMU_64 /* We have a page fault that hash_page could handle but HV refused * the PTE insertion */ @@ -1601,6 +1517,7 @@ handle_dabr_fault: ld r4,_DAR(r1) bl low_hash_fault b ret_from_except +#endif /* * We come here as a result of a DSI at a point where we don't want diff --git a/arch/powerpc/kernel/ftrace.c b/arch/powerpc/kernel/ftrace.c index 9dac18dabd03..1123a4d8d8dd 100644 --- a/arch/powerpc/kernel/ftrace.c +++ b/arch/powerpc/kernel/ftrace.c @@ -607,3 +607,13 @@ unsigned long __init arch_syscall_addr(int nr) return sys_call_table[nr*2]; } #endif /* CONFIG_FTRACE_SYSCALLS && CONFIG_PPC64 */ + +#if defined(CONFIG_PPC64) && (!defined(_CALL_ELF) || _CALL_ELF != 2) +char *arch_ftrace_match_adjust(char *str, const char *search) +{ + if (str[0] == '.' && search[0] != '.') + return str + 1; + else + return str; +} +#endif /* defined(CONFIG_PPC64) && (!defined(_CALL_ELF) || _CALL_ELF != 2) */ diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S index 4286775cbde9..2d14774af6b4 100644 --- a/arch/powerpc/kernel/head_64.S +++ b/arch/powerpc/kernel/head_64.S @@ -973,13 +973,16 @@ start_here_common: * This stuff goes at the beginning of the bss, which is page-aligned. */ .section ".bss" +/* + * pgd dir should be aligned to PGD_TABLE_SIZE which is 64K. + * We will need to find a better way to fix this + */ + .align 16 - .align PAGE_SHIFT + .globl swapper_pg_dir +swapper_pg_dir: + .space PGD_TABLE_SIZE .globl empty_zero_page empty_zero_page: .space PAGE_SIZE - - .globl swapper_pg_dir -swapper_pg_dir: - .space PGD_TABLE_SIZE diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c index ac86c53e2542..a89f4f7a66bd 100644 --- a/arch/powerpc/kernel/ibmebus.c +++ b/arch/powerpc/kernel/ibmebus.c @@ -408,7 +408,7 @@ static ssize_t modalias_show(struct device *dev, return len+1; } -struct device_attribute ibmebus_bus_device_attrs[] = { +static struct device_attribute ibmebus_bus_device_attrs[] = { __ATTR_RO(devspec), __ATTR_RO(name), __ATTR_RO(modalias), diff --git a/arch/powerpc/kernel/isa-bridge.c b/arch/powerpc/kernel/isa-bridge.c index 0f1997097960..ae1316106e2b 100644 --- a/arch/powerpc/kernel/isa-bridge.c +++ b/arch/powerpc/kernel/isa-bridge.c @@ -109,14 +109,14 @@ static void pci_process_ISA_OF_ranges(struct device_node *isa_node, size = 0x10000; __ioremap_at(phb_io_base_phys, (void *)ISA_IO_BASE, - size, _PAGE_NO_CACHE|_PAGE_GUARDED); + size, pgprot_val(pgprot_noncached(__pgprot(0)))); return; inval_range: printk(KERN_ERR "no ISA IO ranges or unexpected isa range, " "mapping 64k\n"); __ioremap_at(phb_io_base_phys, (void *)ISA_IO_BASE, - 0x10000, _PAGE_NO_CACHE|_PAGE_GUARDED); + 0x10000, pgprot_val(pgprot_noncached(__pgprot(0)))); } diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c index 015ae55c1868..2694d078741d 100644 --- a/arch/powerpc/kernel/machine_kexec.c +++ b/arch/powerpc/kernel/machine_kexec.c @@ -228,17 +228,12 @@ static struct property memory_limit_prop = { static void __init export_crashk_values(struct device_node *node) { - struct property *prop; - /* There might be existing crash kernel properties, but we can't * be sure what's in them, so remove them. */ - prop = of_find_property(node, "linux,crashkernel-base", NULL); - if (prop) - of_remove_property(node, prop); - - prop = of_find_property(node, "linux,crashkernel-size", NULL); - if (prop) - of_remove_property(node, prop); + of_remove_property(node, of_find_property(node, + "linux,crashkernel-base", NULL)); + of_remove_property(node, of_find_property(node, + "linux,crashkernel-size", NULL)); if (crashk_res.start != 0) { crashk_base = cpu_to_be_ulong(crashk_res.start), @@ -258,16 +253,13 @@ static void __init export_crashk_values(struct device_node *node) static int __init kexec_setup(void) { struct device_node *node; - struct property *prop; node = of_find_node_by_path("/chosen"); if (!node) return -ENOENT; /* remove any stale properties so ours can be found */ - prop = of_find_property(node, kernel_end_prop.name, NULL); - if (prop) - of_remove_property(node, prop); + of_remove_property(node, of_find_property(node, kernel_end_prop.name, NULL)); /* information needed by userspace when using default_machine_kexec */ kernel_end = cpu_to_be_ulong(__pa(_end)); diff --git a/arch/powerpc/kernel/machine_kexec_64.c b/arch/powerpc/kernel/machine_kexec_64.c index 0fbd75d185d7..b8c202d63ecb 100644 --- a/arch/powerpc/kernel/machine_kexec_64.c +++ b/arch/powerpc/kernel/machine_kexec_64.c @@ -76,6 +76,7 @@ int default_machine_kexec_prepare(struct kimage *image) * end of the blocked region (begin >= high). Use the * boolean identity !(a || b) === (!a && !b). */ +#ifdef CONFIG_PPC_STD_MMU_64 if (htab_address) { low = __pa(htab_address); high = low + htab_size_bytes; @@ -88,6 +89,7 @@ int default_machine_kexec_prepare(struct kimage *image) return -ETXTBSY; } } +#endif /* CONFIG_PPC_STD_MMU_64 */ /* We also should not overwrite the tce tables */ for_each_node_by_type(node, "pci") { @@ -381,7 +383,7 @@ void default_machine_kexec(struct kimage *image) /* NOTREACHED */ } -#ifndef CONFIG_PPC_BOOK3E +#ifdef CONFIG_PPC_STD_MMU_64 /* Values we need to export to the second kernel via the device tree. */ static unsigned long htab_base; static unsigned long htab_size; @@ -401,7 +403,6 @@ static struct property htab_size_prop = { static int __init export_htab_values(void) { struct device_node *node; - struct property *prop; /* On machines with no htab htab_address is NULL */ if (!htab_address) @@ -412,12 +413,8 @@ static int __init export_htab_values(void) return -ENODEV; /* remove any stale propertys so ours can be found */ - prop = of_find_property(node, htab_base_prop.name, NULL); - if (prop) - of_remove_property(node, prop); - prop = of_find_property(node, htab_size_prop.name, NULL); - if (prop) - of_remove_property(node, prop); + of_remove_property(node, of_find_property(node, htab_base_prop.name, NULL)); + of_remove_property(node, of_find_property(node, htab_size_prop.name, NULL)); htab_base = cpu_to_be64(__pa(htab_address)); of_add_property(node, &htab_base_prop); @@ -428,4 +425,4 @@ static int __init export_htab_values(void) return 0; } late_initcall(export_htab_values); -#endif /* !CONFIG_PPC_BOOK3E */ +#endif /* CONFIG_PPC_STD_MMU_64 */ diff --git a/arch/powerpc/kernel/mce.c b/arch/powerpc/kernel/mce.c index 671fd5122406..ef267fd9dd22 100644 --- a/arch/powerpc/kernel/mce.c +++ b/arch/powerpc/kernel/mce.c @@ -37,7 +37,7 @@ static DEFINE_PER_CPU(int, mce_queue_count); static DEFINE_PER_CPU(struct machine_check_event[MAX_MC_EVT], mce_event_queue); static void machine_check_process_queued_event(struct irq_work *work); -struct irq_work mce_event_process_work = { +static struct irq_work mce_event_process_work = { .func = machine_check_process_queued_event, }; diff --git a/arch/powerpc/kernel/mce_power.c b/arch/powerpc/kernel/mce_power.c index ee62b197502d..7353991c4ece 100644 --- a/arch/powerpc/kernel/mce_power.c +++ b/arch/powerpc/kernel/mce_power.c @@ -72,11 +72,15 @@ void __flush_tlb_power8(unsigned int action) void __flush_tlb_power9(unsigned int action) { + if (radix_enabled()) + flush_tlb_206(POWER9_TLB_SETS_RADIX, action); + flush_tlb_206(POWER9_TLB_SETS_HASH, action); } /* flush SLBs and reload */ +#ifdef CONFIG_PPC_STD_MMU_64 static void flush_and_reload_slb(void) { struct slb_shadow *slb; @@ -110,6 +114,7 @@ static void flush_and_reload_slb(void) asm volatile("slbmte %0,%1" : : "r" (rs), "r" (rb)); } } +#endif static long mce_handle_derror(uint64_t dsisr, uint64_t slb_error_bits) { @@ -120,6 +125,7 @@ static long mce_handle_derror(uint64_t dsisr, uint64_t slb_error_bits) * reset the error bits whenever we handle them so that at the end * we can check whether we handled all of them or not. * */ +#ifdef CONFIG_PPC_STD_MMU_64 if (dsisr & slb_error_bits) { flush_and_reload_slb(); /* reset error bits */ @@ -131,6 +137,7 @@ static long mce_handle_derror(uint64_t dsisr, uint64_t slb_error_bits) /* reset error bits */ dsisr &= ~P7_DSISR_MC_TLB_MULTIHIT_MFTLB; } +#endif /* Any other errors we don't understand? */ if (dsisr & 0xffffffffUL) handled = 0; @@ -150,6 +157,7 @@ static long mce_handle_common_ierror(uint64_t srr1) switch (P7_SRR1_MC_IFETCH(srr1)) { case 0: break; +#ifdef CONFIG_PPC_STD_MMU_64 case P7_SRR1_MC_IFETCH_SLB_PARITY: case P7_SRR1_MC_IFETCH_SLB_MULTIHIT: /* flush and reload SLBs for SLB errors. */ @@ -162,6 +170,7 @@ static long mce_handle_common_ierror(uint64_t srr1) handled = 1; } break; +#endif default: break; } @@ -175,10 +184,12 @@ static long mce_handle_ierror_p7(uint64_t srr1) handled = mce_handle_common_ierror(srr1); +#ifdef CONFIG_PPC_STD_MMU_64 if (P7_SRR1_MC_IFETCH(srr1) == P7_SRR1_MC_IFETCH_SLB_BOTH) { flush_and_reload_slb(); handled = 1; } +#endif return handled; } @@ -321,10 +332,12 @@ static long mce_handle_ierror_p8(uint64_t srr1) handled = mce_handle_common_ierror(srr1); +#ifdef CONFIG_PPC_STD_MMU_64 if (P7_SRR1_MC_IFETCH(srr1) == P8_SRR1_MC_IFETCH_ERAT_MULTIHIT) { flush_and_reload_slb(); handled = 1; } +#endif return handled; } diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S index bf5160fbf9d8..285ca8c6cc2e 100644 --- a/arch/powerpc/kernel/misc_32.S +++ b/arch/powerpc/kernel/misc_32.S @@ -599,12 +599,6 @@ _GLOBAL(__bswapdi2) mr r4,r10 blr -_GLOBAL(abs) - srawi r4,r3,31 - xor r3,r3,r4 - sub r3,r3,r4 - blr - #ifdef CONFIG_SMP _GLOBAL(start_secondary_resume) /* Reset stack */ diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c index 0cab9e8c3794..856f9a7944cd 100644 --- a/arch/powerpc/kernel/nvram_64.c +++ b/arch/powerpc/kernel/nvram_64.c @@ -15,8 +15,6 @@ * parsing code. */ -#include <linux/module.h> - #include <linux/types.h> #include <linux/errno.h> #include <linux/fs.h> @@ -1231,12 +1229,4 @@ static int __init nvram_init(void) return rc; } - -static void __exit nvram_cleanup(void) -{ - misc_deregister( &nvram_dev ); -} - -module_init(nvram_init); -module_exit(nvram_cleanup); -MODULE_LICENSE("GPL"); +device_initcall(nvram_init); diff --git a/arch/powerpc/kernel/pci-hotplug.c b/arch/powerpc/kernel/pci-hotplug.c index 59c436189f46..2d71269e7dc1 100644 --- a/arch/powerpc/kernel/pci-hotplug.c +++ b/arch/powerpc/kernel/pci-hotplug.c @@ -21,6 +21,35 @@ #include <asm/firmware.h> #include <asm/eeh.h> +static struct pci_bus *find_bus_among_children(struct pci_bus *bus, + struct device_node *dn) +{ + struct pci_bus *child = NULL; + struct pci_bus *tmp; + + if (pci_bus_to_OF_node(bus) == dn) + return bus; + + list_for_each_entry(tmp, &bus->children, node) { + child = find_bus_among_children(tmp, dn); + if (child) + break; + } + + return child; +} + +struct pci_bus *pci_find_bus_by_node(struct device_node *dn) +{ + struct pci_dn *pdn = PCI_DN(dn); + + if (!pdn || !pdn->phb || !pdn->phb->bus) + return NULL; + + return find_bus_among_children(pdn->phb->bus, dn); +} +EXPORT_SYMBOL_GPL(pci_find_bus_by_node); + /** * pcibios_release_device - release PCI device * @dev: PCI device @@ -38,20 +67,20 @@ void pcibios_release_device(struct pci_dev *dev) } /** - * pcibios_remove_pci_devices - remove all devices under this bus + * pci_hp_remove_devices - remove all devices under this bus * @bus: the indicated PCI bus * * Remove all of the PCI devices under this bus both from the * linux pci device tree, and from the powerpc EEH address cache. */ -void pcibios_remove_pci_devices(struct pci_bus *bus) +void pci_hp_remove_devices(struct pci_bus *bus) { struct pci_dev *dev, *tmp; struct pci_bus *child_bus; /* First go down child busses */ list_for_each_entry(child_bus, &bus->children, node) - pcibios_remove_pci_devices(child_bus); + pci_hp_remove_devices(child_bus); pr_debug("PCI: Removing devices on bus %04x:%02x\n", pci_domain_nr(bus), bus->number); @@ -60,11 +89,10 @@ void pcibios_remove_pci_devices(struct pci_bus *bus) pci_stop_and_remove_bus_device(dev); } } - -EXPORT_SYMBOL_GPL(pcibios_remove_pci_devices); +EXPORT_SYMBOL_GPL(pci_hp_remove_devices); /** - * pcibios_add_pci_devices - adds new pci devices to bus + * pci_hp_add_devices - adds new pci devices to bus * @bus: the indicated PCI bus * * This routine will find and fixup new pci devices under @@ -74,7 +102,7 @@ EXPORT_SYMBOL_GPL(pcibios_remove_pci_devices); * is how this routine differs from other, similar pcibios * routines.) */ -void pcibios_add_pci_devices(struct pci_bus * bus) +void pci_hp_add_devices(struct pci_bus *bus) { int slotno, mode, pass, max; struct pci_dev *dev; @@ -92,7 +120,8 @@ void pcibios_add_pci_devices(struct pci_bus * bus) if (mode == PCI_PROBE_DEVTREE) { /* use ofdt-based probe */ of_rescan_bus(dn, bus); - } else if (mode == PCI_PROBE_NORMAL) { + } else if (mode == PCI_PROBE_NORMAL && + dn->child && PCI_DN(dn->child)) { /* * Use legacy probe. In the partial hotplug case, we * probably have grandchildren devices unplugged. So @@ -114,4 +143,4 @@ void pcibios_add_pci_devices(struct pci_bus * bus) } pcibios_finish_adding_to_bus(bus); } -EXPORT_SYMBOL_GPL(pcibios_add_pci_devices); +EXPORT_SYMBOL_GPL(pci_hp_add_devices); diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c index 60bb187cb46a..3759df52bd67 100644 --- a/arch/powerpc/kernel/pci_64.c +++ b/arch/powerpc/kernel/pci_64.c @@ -38,7 +38,7 @@ * ISA drivers use hard coded offsets. If no ISA bus exists nothing * is mapped on the first 64K of IO space */ -unsigned long pci_io_base = ISA_IO_BASE; +unsigned long pci_io_base; EXPORT_SYMBOL(pci_io_base); static int __init pcibios_init(void) @@ -47,6 +47,7 @@ static int __init pcibios_init(void) printk(KERN_INFO "PCI: Probing PCI hardware\n"); + pci_io_base = ISA_IO_BASE; /* For now, override phys_mem_access_prot. If we need it,g * later, we may move that initialization to each ppc_md */ @@ -159,7 +160,7 @@ static int pcibios_map_phb_io_space(struct pci_controller *hose) /* Establish the mapping */ if (__ioremap_at(phys_page, area->addr, size_page, - _PAGE_NO_CACHE | _PAGE_GUARDED) == NULL) + pgprot_val(pgprot_noncached(__pgprot(0)))) == NULL) return -ENOMEM; /* Fixup hose IO resource */ diff --git a/arch/powerpc/kernel/pci_dn.c b/arch/powerpc/kernel/pci_dn.c index 38102cb9baa9..ecdccce78719 100644 --- a/arch/powerpc/kernel/pci_dn.c +++ b/arch/powerpc/kernel/pci_dn.c @@ -282,13 +282,9 @@ void remove_dev_pci_data(struct pci_dev *pdev) #endif /* CONFIG_PCI_IOV */ } -/* - * Traverse_func that inits the PCI fields of the device node. - * NOTE: this *must* be done before read/write config to the device. - */ -void *update_dn_pci_info(struct device_node *dn, void *data) +struct pci_dn *pci_add_device_node_info(struct pci_controller *hose, + struct device_node *dn) { - struct pci_controller *phb = data; const __be32 *type = of_get_property(dn, "ibm,pci-config-space-type", NULL); const __be32 *regs; struct device_node *parent; @@ -299,7 +295,7 @@ void *update_dn_pci_info(struct device_node *dn, void *data) return NULL; dn->data = pdn; pdn->node = dn; - pdn->phb = phb; + pdn->phb = hose; #ifdef CONFIG_PPC_POWERNV pdn->pe_number = IODA_INVALID_PE; #endif @@ -331,8 +327,32 @@ void *update_dn_pci_info(struct device_node *dn, void *data) if (pdn->parent) list_add_tail(&pdn->list, &pdn->parent->child_list); - return NULL; + return pdn; } +EXPORT_SYMBOL_GPL(pci_add_device_node_info); + +void pci_remove_device_node_info(struct device_node *dn) +{ + struct pci_dn *pdn = dn ? PCI_DN(dn) : NULL; +#ifdef CONFIG_EEH + struct eeh_dev *edev = pdn_to_eeh_dev(pdn); + + if (edev) + edev->pdn = NULL; +#endif + + if (!pdn) + return; + + WARN_ON(!list_empty(&pdn->child_list)); + list_del(&pdn->list); + if (pdn->parent) + of_node_put(pdn->parent->node); + + dn->data = NULL; + kfree(pdn); +} +EXPORT_SYMBOL_GPL(pci_remove_device_node_info); /* * Traverse a device tree stopping each PCI device in the tree. @@ -352,8 +372,9 @@ void *update_dn_pci_info(struct device_node *dn, void *data) * one of these nodes we also assume its siblings are non-pci for * performance. */ -void *traverse_pci_devices(struct device_node *start, traverse_func pre, - void *data) +void *pci_traverse_device_nodes(struct device_node *start, + void *(*fn)(struct device_node *, void *), + void *data) { struct device_node *dn, *nextdn; void *ret; @@ -368,8 +389,11 @@ void *traverse_pci_devices(struct device_node *start, traverse_func pre, if (classp) class = of_read_number(classp, 1); - if (pre && ((ret = pre(dn, data)) != NULL)) - return ret; + if (fn) { + ret = fn(dn, data); + if (ret) + return ret; + } /* If we are a PCI bridge, go down */ if (dn->child && ((class >> 8) == PCI_CLASS_BRIDGE_PCI || @@ -391,6 +415,7 @@ void *traverse_pci_devices(struct device_node *start, traverse_func pre, } return NULL; } +EXPORT_SYMBOL_GPL(pci_traverse_device_nodes); static struct pci_dn *pci_dn_next_one(struct pci_dn *root, struct pci_dn *pdn) @@ -432,6 +457,18 @@ void *traverse_pci_dn(struct pci_dn *root, return NULL; } +static void *add_pdn(struct device_node *dn, void *data) +{ + struct pci_controller *hose = data; + struct pci_dn *pdn; + + pdn = pci_add_device_node_info(hose, dn); + if (!pdn) + return ERR_PTR(-ENOMEM); + + return NULL; +} + /** * pci_devs_phb_init_dynamic - setup pci devices under this PHB * phb: pci-to-host bridge (top-level bridge connecting to cpu) @@ -446,8 +483,7 @@ void pci_devs_phb_init_dynamic(struct pci_controller *phb) struct pci_dn *pdn; /* PHB nodes themselves must not match */ - update_dn_pci_info(dn, phb); - pdn = dn->data; + pdn = pci_add_device_node_info(phb, dn); if (pdn) { pdn->devfn = pdn->busno = -1; pdn->vendor_id = pdn->device_id = pdn->class_code = 0; @@ -456,7 +492,7 @@ void pci_devs_phb_init_dynamic(struct pci_controller *phb) } /* Update dn->phb ptrs for new phb and children devices */ - traverse_pci_devices(dn, update_dn_pci_info, phb); + pci_traverse_device_nodes(dn, add_pdn, phb); } /** diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 2a9280b945e0..ea8a28fd6f31 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -38,6 +38,7 @@ #include <linux/random.h> #include <linux/hw_breakpoint.h> #include <linux/uaccess.h> +#include <linux/elf-randomize.h> #include <asm/pgtable.h> #include <asm/io.h> @@ -55,6 +56,7 @@ #include <asm/firmware.h> #endif #include <asm/code-patching.h> +#include <asm/exec.h> #include <asm/livepatch.h> #include <linux/kprobes.h> @@ -1077,7 +1079,7 @@ struct task_struct *__switch_to(struct task_struct *prev, } #endif /* CONFIG_PPC64 */ -#ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_PPC_STD_MMU_64 batch = this_cpu_ptr(&ppc64_tlb_batch); if (batch->active) { current_thread_info()->local_flags |= _TLF_LAZY_MMU; @@ -1085,7 +1087,7 @@ struct task_struct *__switch_to(struct task_struct *prev, __flush_tlb_pending(batch); batch->active = 0; } -#endif /* CONFIG_PPC_BOOK3S_64 */ +#endif /* CONFIG_PPC_STD_MMU_64 */ #ifdef CONFIG_PPC_ADV_DEBUG_REGS switch_booke_debug_regs(&new->thread.debug); @@ -1131,7 +1133,7 @@ struct task_struct *__switch_to(struct task_struct *prev, last = _switch(old_thread, new_thread); -#ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_PPC_STD_MMU_64 if (current_thread_info()->local_flags & _TLF_LAZY_MMU) { current_thread_info()->local_flags &= ~_TLF_LAZY_MMU; batch = this_cpu_ptr(&ppc64_tlb_batch); @@ -1140,8 +1142,7 @@ struct task_struct *__switch_to(struct task_struct *prev, if (current_thread_info()->task->thread.regs) restore_math(current_thread_info()->task->thread.regs); - -#endif /* CONFIG_PPC_BOOK3S_64 */ +#endif /* CONFIG_PPC_STD_MMU_64 */ return last; } @@ -1376,6 +1377,9 @@ static void setup_ksp_vsid(struct task_struct *p, unsigned long sp) unsigned long sp_vsid; unsigned long llp = mmu_psize_defs[mmu_linear_psize].sllp; + if (radix_enabled()) + return; + if (mmu_has_feature(MMU_FTR_1T_SEGMENT)) sp_vsid = get_kernel_vsid(sp, MMU_SEGSIZE_1T) << SLB_VSID_SHIFT_1T; @@ -1924,7 +1928,8 @@ unsigned long arch_randomize_brk(struct mm_struct *mm) * the heap, we can put it above 1TB so it is backed by a 1TB * segment. Otherwise the heap will be in the bottom 1TB * which always uses 256MB segments and this may result in a - * performance penalty. + * performance penalty. We don't need to worry about radix. For + * radix, mmu_highuser_ssize remains unchanged from 256MB. */ if (!is_32bit_task() && (mmu_highuser_ssize == MMU_SEGSIZE_1T)) base = max_t(unsigned long, mm->brk, 1UL << SID_SHIFT_1T); diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index a15fe1d4e84a..946e34ffeae9 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -34,6 +34,7 @@ #include <linux/of.h> #include <linux/of_fdt.h> #include <linux/libfdt.h> +#include <linux/cpu.h> #include <asm/prom.h> #include <asm/rtas.h> @@ -167,6 +168,7 @@ static struct ibm_pa_feature { */ {CPU_FTR_TM_COMP, 0, 0, PPC_FEATURE2_HTM_COMP|PPC_FEATURE2_HTM_NOSC_COMP, 22, 0, 0}, + {0, MMU_FTR_RADIX, 0, 0, 40, 0, 0}, }; static void __init scan_features(unsigned long node, const unsigned char *ftrs, diff --git a/arch/powerpc/kernel/rtasd.c b/arch/powerpc/kernel/rtasd.c index aa610ce8742f..c638e2487a9c 100644 --- a/arch/powerpc/kernel/rtasd.c +++ b/arch/powerpc/kernel/rtasd.c @@ -442,7 +442,7 @@ static void do_event_scan(void) } static void rtas_event_scan(struct work_struct *w); -DECLARE_DELAYED_WORK(event_scan_work, rtas_event_scan); +static DECLARE_DELAYED_WORK(event_scan_work, rtas_event_scan); /* * Delay should be at least one second since some machines have problems if diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index 44c8d03558ac..8ca79b7503d8 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -128,9 +128,7 @@ void machine_restart(char *cmd) machine_shutdown(); if (ppc_md.restart) ppc_md.restart(cmd); -#ifdef CONFIG_SMP smp_send_stop(); -#endif printk(KERN_EMERG "System Halted, OK to turn off power\n"); local_irq_disable(); while (1) ; @@ -141,9 +139,7 @@ void machine_power_off(void) machine_shutdown(); if (pm_power_off) pm_power_off(); -#ifdef CONFIG_SMP smp_send_stop(); -#endif printk(KERN_EMERG "System Halted, OK to turn off power\n"); local_irq_disable(); while (1) ; @@ -159,9 +155,7 @@ void machine_halt(void) machine_shutdown(); if (ppc_md.halt) ppc_md.halt(); -#ifdef CONFIG_SMP smp_send_stop(); -#endif printk(KERN_EMERG "System Halted, OK to turn off power\n"); local_irq_disable(); while (1) ; diff --git a/arch/powerpc/kernel/swsusp.c b/arch/powerpc/kernel/swsusp.c index 6669b1752512..6ae9bd5086a4 100644 --- a/arch/powerpc/kernel/swsusp.c +++ b/arch/powerpc/kernel/swsusp.c @@ -31,6 +31,6 @@ void save_processor_state(void) void restore_processor_state(void) { #ifdef CONFIG_PPC32 - switch_mmu_context(current->active_mm, current->active_mm); + switch_mmu_context(current->active_mm, current->active_mm, NULL); #endif } diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 81b0900a39ee..3ed9a5a21d77 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -55,6 +55,7 @@ #include <linux/delay.h> #include <linux/irq_work.h> #include <linux/clk-provider.h> +#include <linux/suspend.h> #include <asm/trace.h> #include <asm/io.h> diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c index 5f8dcdaa2820..8d7358f3a273 100644 --- a/arch/powerpc/kernel/vio.c +++ b/arch/powerpc/kernel/vio.c @@ -87,7 +87,7 @@ struct vio_cmo_dev_entry { * @curr: bytes currently allocated * @high: high water mark for IO data usage */ -struct vio_cmo { +static struct vio_cmo { spinlock_t lock; struct delayed_work balance_q; struct list_head device_list; @@ -615,7 +615,7 @@ static u64 vio_dma_get_required_mask(struct device *dev) return dma_iommu_ops.get_required_mask(dev); } -struct dma_map_ops vio_dma_mapping_ops = { +static struct dma_map_ops vio_dma_mapping_ops = { .alloc = vio_dma_iommu_alloc_coherent, .free = vio_dma_iommu_free_coherent, .mmap = dma_direct_mmap_coherent, diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c index c7b78d8336b2..05f09ae82587 100644 --- a/arch/powerpc/kvm/book3s_64_mmu_hv.c +++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c @@ -447,7 +447,7 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu, struct revmap_entry *rev; struct page *page, *pages[1]; long index, ret, npages; - unsigned long is_io; + bool is_ci; unsigned int writing, write_ok; struct vm_area_struct *vma; unsigned long rcbits; @@ -503,7 +503,7 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu, smp_rmb(); ret = -EFAULT; - is_io = 0; + is_ci = false; pfn = 0; page = NULL; pte_size = PAGE_SIZE; @@ -521,7 +521,7 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu, pfn = vma->vm_pgoff + ((hva - vma->vm_start) >> PAGE_SHIFT); pte_size = psize; - is_io = hpte_cache_bits(pgprot_val(vma->vm_page_prot)); + is_ci = pte_ci(__pte((pgprot_val(vma->vm_page_prot)))); write_ok = vma->vm_flags & VM_WRITE; } up_read(¤t->mm->mmap_sem); @@ -558,10 +558,9 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu, goto out_put; /* Check WIMG vs. the actual page we're accessing */ - if (!hpte_cache_flags_ok(r, is_io)) { - if (is_io) + if (!hpte_cache_flags_ok(r, is_ci)) { + if (is_ci) goto out_put; - /* * Allow guest to map emulated device memory as * uncacheable, but actually make it cacheable. diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 93243554cae9..e20beae5ca7a 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -3272,6 +3272,12 @@ static int kvmppc_core_check_processor_compat_hv(void) if (!cpu_has_feature(CPU_FTR_HVMODE) || !cpu_has_feature(CPU_FTR_ARCH_206)) return -EIO; + /* + * Disable KVM for Power9, untill the required bits merged. + */ + if (cpu_has_feature(CPU_FTR_ARCH_300)) + return -EIO; + return 0; } diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c index 4cb8db05f3e5..99b4e9d5dd23 100644 --- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c +++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c @@ -175,7 +175,7 @@ long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags, unsigned long g_ptel; struct kvm_memory_slot *memslot; unsigned hpage_shift; - unsigned long is_io; + bool is_ci; unsigned long *rmap; pte_t *ptep; unsigned int writing; @@ -199,7 +199,7 @@ long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags, gfn = gpa >> PAGE_SHIFT; memslot = __gfn_to_memslot(kvm_memslots_raw(kvm), gfn); pa = 0; - is_io = ~0ul; + is_ci = false; rmap = NULL; if (!(memslot && !(memslot->flags & KVM_MEMSLOT_INVALID))) { /* Emulated MMIO - mark this with key=31 */ @@ -250,7 +250,7 @@ long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags, if (writing && !pte_write(pte)) /* make the actual HPTE be read-only */ ptel = hpte_make_readonly(ptel); - is_io = hpte_cache_bits(pte_val(pte)); + is_ci = pte_ci(pte); pa = pte_pfn(pte) << PAGE_SHIFT; pa |= hva & (host_pte_size - 1); pa |= gpa & ~PAGE_MASK; @@ -267,9 +267,9 @@ long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags, else pteh |= HPTE_V_ABSENT; - /* Check WIMG */ - if (is_io != ~0ul && !hpte_cache_flags_ok(ptel, is_io)) { - if (is_io) + /*If we had host pte mapping then Check WIMG */ + if (ptep && !hpte_cache_flags_ok(ptel, is_ci)) { + if (is_ci) return H_PARAMETER; /* * Allow guest to map emulated device memory as diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c index 8129b0db131e..8e4f64f0b774 100644 --- a/arch/powerpc/kvm/book3s_pr.c +++ b/arch/powerpc/kvm/book3s_pr.c @@ -1713,7 +1713,11 @@ static void kvmppc_core_destroy_vm_pr(struct kvm *kvm) static int kvmppc_core_check_processor_compat_pr(void) { - /* we are always compatible */ + /* + * Disable KVM for Power9 untill the required bits merged. + */ + if (cpu_has_feature(CPU_FTR_ARCH_300)) + return -EIO; return 0; } diff --git a/arch/powerpc/lib/copy_32.S b/arch/powerpc/lib/copy_32.S index c44df2dbedd5..99f37f24185c 100644 --- a/arch/powerpc/lib/copy_32.S +++ b/arch/powerpc/lib/copy_32.S @@ -217,7 +217,7 @@ _GLOBAL(memcpy) bdnz 40b 65: blr -_GLOBAL(generic_memcpy) +generic_memcpy: srwi. r7,r5,3 addi r6,r3,-4 addi r4,r4,-4 diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c index dc885b30f7a6..3362299b1859 100644 --- a/arch/powerpc/lib/sstep.c +++ b/arch/powerpc/lib/sstep.c @@ -925,6 +925,7 @@ int __kprobes analyse_instr(struct instruction_op *op, struct pt_regs *regs, } } #endif + break; /* illegal instruction */ case 31: switch ((instr >> 1) & 0x3ff) { @@ -1818,9 +1819,11 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr) case 4: __get_user_asmx(val, op.ea, err, "lwarx"); break; +#ifdef __powerpc64__ case 8: __get_user_asmx(val, op.ea, err, "ldarx"); break; +#endif default: return 0; } @@ -1841,9 +1844,11 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr) case 4: __put_user_asmx(op.val, op.ea, err, "stwcx.", cr); break; +#ifdef __powerpc64__ case 8: __put_user_asmx(op.val, op.ea, err, "stdcx.", cr); break; +#endif default: return 0; } diff --git a/arch/powerpc/lib/xor_vmx.c b/arch/powerpc/lib/xor_vmx.c index 07f49f1568e5..f9de69a04e88 100644 --- a/arch/powerpc/lib/xor_vmx.c +++ b/arch/powerpc/lib/xor_vmx.c @@ -17,7 +17,17 @@ * * Author: Anton Blanchard <anton@au.ibm.com> */ + +/* + * Sparse (as at v0.5.0) gets very, very confused by this file. + * Make it a bit simpler for it. + */ +#if !defined(__CHECKER__) #include <altivec.h> +#else +#define vec_xor(a, b) a ^ b +#define vector __attribute__((vector_size(16))) +#endif #include <linux/preempt.h> #include <linux/export.h> diff --git a/arch/powerpc/mm/Makefile b/arch/powerpc/mm/Makefile index adfee3f1aeb9..f2cea6d5e764 100644 --- a/arch/powerpc/mm/Makefile +++ b/arch/powerpc/mm/Makefile @@ -13,10 +13,11 @@ obj-$(CONFIG_PPC_MMU_NOHASH) += mmu_context_nohash.o tlb_nohash.o \ tlb_nohash_low.o obj-$(CONFIG_PPC_BOOK3E) += tlb_low_$(CONFIG_WORD_SIZE)e.o hash64-$(CONFIG_PPC_NATIVE) := hash_native_64.o -obj-$(CONFIG_PPC_STD_MMU_64) += hash_utils_64.o slb_low.o slb.o $(hash64-y) -obj-$(CONFIG_PPC_STD_MMU_32) += ppc_mmu_32.o hash_low_32.o -obj-$(CONFIG_PPC_STD_MMU) += tlb_hash$(CONFIG_WORD_SIZE).o \ - mmu_context_hash$(CONFIG_WORD_SIZE).o +obj-$(CONFIG_PPC_BOOK3E_64) += pgtable-book3e.o +obj-$(CONFIG_PPC_STD_MMU_64) += pgtable-hash64.o hash_utils_64.o slb_low.o slb.o $(hash64-y) mmu_context_book3s64.o pgtable-book3s64.o +obj-$(CONFIG_PPC_RADIX_MMU) += pgtable-radix.o tlb-radix.o +obj-$(CONFIG_PPC_STD_MMU_32) += ppc_mmu_32.o hash_low_32.o mmu_context_hash32.o +obj-$(CONFIG_PPC_STD_MMU) += tlb_hash$(CONFIG_WORD_SIZE).o ifeq ($(CONFIG_PPC_STD_MMU_64),y) obj-$(CONFIG_PPC_4K_PAGES) += hash64_4k.o obj-$(CONFIG_PPC_64K_PAGES) += hash64_64k.o @@ -33,6 +34,7 @@ obj-$(CONFIG_PPC_MM_SLICES) += slice.o obj-y += hugetlbpage.o ifeq ($(CONFIG_HUGETLB_PAGE),y) obj-$(CONFIG_PPC_STD_MMU_64) += hugetlbpage-hash64.o +obj-$(CONFIG_PPC_RADIX_MMU) += hugetlbpage-radix.o obj-$(CONFIG_PPC_BOOK3E_MMU) += hugetlbpage-book3e.o endif obj-$(CONFIG_TRANSPARENT_HUGEPAGE) += hugepage-hash64.o diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c index a1b2713f6e96..139dec421e57 100644 --- a/arch/powerpc/mm/fsl_booke_mmu.c +++ b/arch/powerpc/mm/fsl_booke_mmu.c @@ -135,7 +135,7 @@ static void settlbcam(int index, unsigned long virt, phys_addr_t phys, TLBCAM[index].MAS7 = (u64)phys >> 32; /* Below is unlikely -- only for large user pages or similar */ - if (pte_user(flags)) { + if (pte_user(__pte(flags))) { TLBCAM[index].MAS3 |= MAS3_UX | MAS3_UR; TLBCAM[index].MAS3 |= ((flags & _PAGE_RW) ? MAS3_UW : 0); } diff --git a/arch/powerpc/mm/hash64_4k.c b/arch/powerpc/mm/hash64_4k.c index 47d1b26effc6..6333b273d2d5 100644 --- a/arch/powerpc/mm/hash64_4k.c +++ b/arch/powerpc/mm/hash64_4k.c @@ -34,21 +34,21 @@ int __hash_page_4K(unsigned long ea, unsigned long access, unsigned long vsid, old_pte = pte_val(pte); /* If PTE busy, retry the access */ - if (unlikely(old_pte & _PAGE_BUSY)) + if (unlikely(old_pte & H_PAGE_BUSY)) return 0; /* If PTE permissions don't match, take page fault */ - if (unlikely(access & ~old_pte)) + if (unlikely(!check_pte_access(access, old_pte))) return 1; /* * Try to lock the PTE, add ACCESSED and DIRTY if it was * a write access. Since this is 4K insert of 64K page size - * also add _PAGE_COMBO + * also add H_PAGE_COMBO */ - new_pte = old_pte | _PAGE_BUSY | _PAGE_ACCESSED; - if (access & _PAGE_RW) + new_pte = old_pte | H_PAGE_BUSY | _PAGE_ACCESSED; + if (access & _PAGE_WRITE) new_pte |= _PAGE_DIRTY; - } while (old_pte != __cmpxchg_u64((unsigned long *)ptep, - old_pte, new_pte)); + } while (!pte_xchg(ptep, __pte(old_pte), __pte(new_pte))); + /* * PP bits. _PAGE_USER is already PP bit 0x2, so we only * need to add in 0x1 if it's a read-only user page @@ -60,22 +60,22 @@ int __hash_page_4K(unsigned long ea, unsigned long access, unsigned long vsid, rflags = hash_page_do_lazy_icache(rflags, __pte(old_pte), trap); vpn = hpt_vpn(ea, vsid, ssize); - if (unlikely(old_pte & _PAGE_HASHPTE)) { + if (unlikely(old_pte & H_PAGE_HASHPTE)) { /* * There MIGHT be an HPTE for this pte */ hash = hpt_hash(vpn, shift, ssize); - if (old_pte & _PAGE_F_SECOND) + if (old_pte & H_PAGE_F_SECOND) hash = ~hash; slot = (hash & htab_hash_mask) * HPTES_PER_GROUP; - slot += (old_pte & _PAGE_F_GIX) >> _PAGE_F_GIX_SHIFT; + slot += (old_pte & H_PAGE_F_GIX) >> H_PAGE_F_GIX_SHIFT; if (ppc_md.hpte_updatepp(slot, rflags, vpn, MMU_PAGE_4K, MMU_PAGE_4K, ssize, flags) == -1) old_pte &= ~_PAGE_HPTEFLAGS; } - if (likely(!(old_pte & _PAGE_HASHPTE))) { + if (likely(!(old_pte & H_PAGE_HASHPTE))) { pa = pte_pfn(__pte(old_pte)) << PAGE_SHIFT; hash = hpt_hash(vpn, shift, ssize); @@ -115,9 +115,10 @@ repeat: MMU_PAGE_4K, MMU_PAGE_4K, old_pte); return -1; } - new_pte = (new_pte & ~_PAGE_HPTEFLAGS) | _PAGE_HASHPTE; - new_pte |= (slot << _PAGE_F_GIX_SHIFT) & (_PAGE_F_SECOND | _PAGE_F_GIX); + new_pte = (new_pte & ~_PAGE_HPTEFLAGS) | H_PAGE_HASHPTE; + new_pte |= (slot << H_PAGE_F_GIX_SHIFT) & + (H_PAGE_F_SECOND | H_PAGE_F_GIX); } - *ptep = __pte(new_pte & ~_PAGE_BUSY); + *ptep = __pte(new_pte & ~H_PAGE_BUSY); return 0; } diff --git a/arch/powerpc/mm/hash64_64k.c b/arch/powerpc/mm/hash64_64k.c index b2d659cf51c6..16644e1f4e6b 100644 --- a/arch/powerpc/mm/hash64_64k.c +++ b/arch/powerpc/mm/hash64_64k.c @@ -23,7 +23,7 @@ bool __rpte_sub_valid(real_pte_t rpte, unsigned long index) unsigned long g_idx; unsigned long ptev = pte_val(rpte.pte); - g_idx = (ptev & _PAGE_COMBO_VALID) >> _PAGE_F_GIX_SHIFT; + g_idx = (ptev & H_PAGE_COMBO_VALID) >> H_PAGE_F_GIX_SHIFT; index = index >> 2; if (g_idx & (0x1 << index)) return true; @@ -37,12 +37,12 @@ static unsigned long mark_subptegroup_valid(unsigned long ptev, unsigned long in { unsigned long g_idx; - if (!(ptev & _PAGE_COMBO)) + if (!(ptev & H_PAGE_COMBO)) return ptev; index = index >> 2; g_idx = 0x1 << index; - return ptev | (g_idx << _PAGE_F_GIX_SHIFT); + return ptev | (g_idx << H_PAGE_F_GIX_SHIFT); } int __hash_page_4K(unsigned long ea, unsigned long access, unsigned long vsid, @@ -66,21 +66,21 @@ int __hash_page_4K(unsigned long ea, unsigned long access, unsigned long vsid, old_pte = pte_val(pte); /* If PTE busy, retry the access */ - if (unlikely(old_pte & _PAGE_BUSY)) + if (unlikely(old_pte & H_PAGE_BUSY)) return 0; /* If PTE permissions don't match, take page fault */ - if (unlikely(access & ~old_pte)) + if (unlikely(!check_pte_access(access, old_pte))) return 1; /* * Try to lock the PTE, add ACCESSED and DIRTY if it was * a write access. Since this is 4K insert of 64K page size - * also add _PAGE_COMBO + * also add H_PAGE_COMBO */ - new_pte = old_pte | _PAGE_BUSY | _PAGE_ACCESSED | _PAGE_COMBO; - if (access & _PAGE_RW) + new_pte = old_pte | H_PAGE_BUSY | _PAGE_ACCESSED | H_PAGE_COMBO; + if (access & _PAGE_WRITE) new_pte |= _PAGE_DIRTY; - } while (old_pte != __cmpxchg_u64((unsigned long *)ptep, - old_pte, new_pte)); + } while (!pte_xchg(ptep, __pte(old_pte), __pte(new_pte))); + /* * Handle the subpage protection bits */ @@ -103,21 +103,21 @@ int __hash_page_4K(unsigned long ea, unsigned long access, unsigned long vsid, /* *None of the sub 4k page is hashed */ - if (!(old_pte & _PAGE_HASHPTE)) + if (!(old_pte & H_PAGE_HASHPTE)) goto htab_insert_hpte; /* * Check if the pte was already inserted into the hash table * as a 64k HW page, and invalidate the 64k HPTE if so. */ - if (!(old_pte & _PAGE_COMBO)) { + if (!(old_pte & H_PAGE_COMBO)) { flush_hash_page(vpn, rpte, MMU_PAGE_64K, ssize, flags); /* * clear the old slot details from the old and new pte. * On hash insert failure we use old pte value and we don't * want slot information there if we have a insert failure. */ - old_pte &= ~(_PAGE_HASHPTE | _PAGE_F_GIX | _PAGE_F_SECOND); - new_pte &= ~(_PAGE_HASHPTE | _PAGE_F_GIX | _PAGE_F_SECOND); + old_pte &= ~(H_PAGE_HASHPTE | H_PAGE_F_GIX | H_PAGE_F_SECOND); + new_pte &= ~(H_PAGE_HASHPTE | H_PAGE_F_GIX | H_PAGE_F_SECOND); goto htab_insert_hpte; } /* @@ -143,15 +143,15 @@ int __hash_page_4K(unsigned long ea, unsigned long access, unsigned long vsid, if (ret == -1) goto htab_insert_hpte; - *ptep = __pte(new_pte & ~_PAGE_BUSY); + *ptep = __pte(new_pte & ~H_PAGE_BUSY); return 0; } htab_insert_hpte: /* - * handle _PAGE_4K_PFN case + * handle H_PAGE_4K_PFN case */ - if (old_pte & _PAGE_4K_PFN) { + if (old_pte & H_PAGE_4K_PFN) { /* * All the sub 4k page have the same * physical address. @@ -199,20 +199,20 @@ repeat: } /* * Insert slot number & secondary bit in PTE second half, - * clear _PAGE_BUSY and set appropriate HPTE slot bit - * Since we have _PAGE_BUSY set on ptep, we can be sure + * clear H_PAGE_BUSY and set appropriate HPTE slot bit + * Since we have H_PAGE_BUSY set on ptep, we can be sure * nobody is undating hidx. */ hidxp = (unsigned long *)(ptep + PTRS_PER_PTE); rpte.hidx &= ~(0xfUL << (subpg_index << 2)); *hidxp = rpte.hidx | (slot << (subpg_index << 2)); new_pte = mark_subptegroup_valid(new_pte, subpg_index); - new_pte |= _PAGE_HASHPTE; + new_pte |= H_PAGE_HASHPTE; /* * check __real_pte for details on matching smp_rmb() */ smp_wmb(); - *ptep = __pte(new_pte & ~_PAGE_BUSY); + *ptep = __pte(new_pte & ~H_PAGE_BUSY); return 0; } @@ -220,7 +220,6 @@ int __hash_page_64K(unsigned long ea, unsigned long access, unsigned long vsid, pte_t *ptep, unsigned long trap, unsigned long flags, int ssize) { - unsigned long hpte_group; unsigned long rflags, pa; unsigned long old_pte, new_pte; @@ -235,27 +234,26 @@ int __hash_page_64K(unsigned long ea, unsigned long access, old_pte = pte_val(pte); /* If PTE busy, retry the access */ - if (unlikely(old_pte & _PAGE_BUSY)) + if (unlikely(old_pte & H_PAGE_BUSY)) return 0; /* If PTE permissions don't match, take page fault */ - if (unlikely(access & ~old_pte)) + if (unlikely(!check_pte_access(access, old_pte))) return 1; /* * Check if PTE has the cache-inhibit bit set * If so, bail out and refault as a 4k page */ if (!mmu_has_feature(MMU_FTR_CI_LARGE_PAGE) && - unlikely(old_pte & _PAGE_NO_CACHE)) + unlikely(pte_ci(pte))) return 0; /* * Try to lock the PTE, add ACCESSED and DIRTY if it was * a write access. */ - new_pte = old_pte | _PAGE_BUSY | _PAGE_ACCESSED; - if (access & _PAGE_RW) + new_pte = old_pte | H_PAGE_BUSY | _PAGE_ACCESSED; + if (access & _PAGE_WRITE) new_pte |= _PAGE_DIRTY; - } while (old_pte != __cmpxchg_u64((unsigned long *)ptep, - old_pte, new_pte)); + } while (!pte_xchg(ptep, __pte(old_pte), __pte(new_pte))); rflags = htab_convert_pte_flags(new_pte); @@ -264,22 +262,22 @@ int __hash_page_64K(unsigned long ea, unsigned long access, rflags = hash_page_do_lazy_icache(rflags, __pte(old_pte), trap); vpn = hpt_vpn(ea, vsid, ssize); - if (unlikely(old_pte & _PAGE_HASHPTE)) { + if (unlikely(old_pte & H_PAGE_HASHPTE)) { /* * There MIGHT be an HPTE for this pte */ hash = hpt_hash(vpn, shift, ssize); - if (old_pte & _PAGE_F_SECOND) + if (old_pte & H_PAGE_F_SECOND) hash = ~hash; slot = (hash & htab_hash_mask) * HPTES_PER_GROUP; - slot += (old_pte & _PAGE_F_GIX) >> _PAGE_F_GIX_SHIFT; + slot += (old_pte & H_PAGE_F_GIX) >> H_PAGE_F_GIX_SHIFT; if (ppc_md.hpte_updatepp(slot, rflags, vpn, MMU_PAGE_64K, MMU_PAGE_64K, ssize, flags) == -1) old_pte &= ~_PAGE_HPTEFLAGS; } - if (likely(!(old_pte & _PAGE_HASHPTE))) { + if (likely(!(old_pte & H_PAGE_HASHPTE))) { pa = pte_pfn(__pte(old_pte)) << PAGE_SHIFT; hash = hpt_hash(vpn, shift, ssize); @@ -319,9 +317,10 @@ repeat: MMU_PAGE_64K, MMU_PAGE_64K, old_pte); return -1; } - new_pte = (new_pte & ~_PAGE_HPTEFLAGS) | _PAGE_HASHPTE; - new_pte |= (slot << _PAGE_F_GIX_SHIFT) & (_PAGE_F_SECOND | _PAGE_F_GIX); + new_pte = (new_pte & ~_PAGE_HPTEFLAGS) | H_PAGE_HASHPTE; + new_pte |= (slot << H_PAGE_F_GIX_SHIFT) & + (H_PAGE_F_SECOND | H_PAGE_F_GIX); } - *ptep = __pte(new_pte & ~_PAGE_BUSY); + *ptep = __pte(new_pte & ~H_PAGE_BUSY); return 0; } diff --git a/arch/powerpc/mm/hash_native_64.c b/arch/powerpc/mm/hash_native_64.c index 8eaac81347fd..d873f6507f72 100644 --- a/arch/powerpc/mm/hash_native_64.c +++ b/arch/powerpc/mm/hash_native_64.c @@ -221,7 +221,7 @@ static long native_hpte_insert(unsigned long hpte_group, unsigned long vpn, return -1; hpte_v = hpte_encode_v(vpn, psize, apsize, ssize) | vflags | HPTE_V_VALID; - hpte_r = hpte_encode_r(pa, psize, apsize) | rflags; + hpte_r = hpte_encode_r(pa, psize, apsize, ssize) | rflags; if (!(vflags & HPTE_V_BOLTED)) { DBG_LOW(" i=%x hpte_v=%016lx, hpte_r=%016lx\n", @@ -719,6 +719,12 @@ static void native_flush_hash_range(unsigned long number, int local) local_irq_restore(flags); } +static int native_update_partition_table(u64 patb1) +{ + partition_tb->patb1 = cpu_to_be64(patb1); + return 0; +} + void __init hpte_init_native(void) { ppc_md.hpte_invalidate = native_hpte_invalidate; @@ -729,4 +735,7 @@ void __init hpte_init_native(void) ppc_md.hpte_clear_all = native_hpte_clear; ppc_md.flush_hash_range = native_flush_hash_range; ppc_md.hugepage_invalidate = native_hugepage_invalidate; + + if (cpu_has_feature(CPU_FTR_ARCH_300)) + ppc_md.update_partition_table = native_update_partition_table; } diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index 7635b1c6b5da..59268969a0bc 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -167,16 +167,22 @@ unsigned long htab_convert_pte_flags(unsigned long pteflags) if ((pteflags & _PAGE_EXEC) == 0) rflags |= HPTE_R_N; /* - * PP bits: + * PPP bits: * Linux uses slb key 0 for kernel and 1 for user. - * kernel areas are mapped with PP=00 - * and there is no kernel RO (_PAGE_KERNEL_RO). - * User area is mapped with PP=0x2 for read/write - * or PP=0x3 for read-only (including writeable but clean pages). + * kernel RW areas are mapped with PPP=0b000 + * User area is mapped with PPP=0b010 for read/write + * or PPP=0b011 for read-only (including writeable but clean pages). */ - if (pteflags & _PAGE_USER) { - rflags |= 0x2; - if (!((pteflags & _PAGE_RW) && (pteflags & _PAGE_DIRTY))) + if (pteflags & _PAGE_PRIVILEGED) { + /* + * Kernel read only mapped with ppp bits 0b110 + */ + if (!(pteflags & _PAGE_WRITE)) + rflags |= (HPTE_R_PP0 | 0x2); + } else { + if (pteflags & _PAGE_RWX) + rflags |= 0x2; + if (!((pteflags & _PAGE_WRITE) && (pteflags & _PAGE_DIRTY))) rflags |= 0x1; } /* @@ -186,12 +192,13 @@ unsigned long htab_convert_pte_flags(unsigned long pteflags) /* * Add in WIG bits */ - if (pteflags & _PAGE_WRITETHRU) - rflags |= HPTE_R_W; - if (pteflags & _PAGE_NO_CACHE) + + if ((pteflags & _PAGE_CACHE_CTL) == _PAGE_TOLERANT) rflags |= HPTE_R_I; - if (pteflags & _PAGE_GUARDED) - rflags |= HPTE_R_G; + if ((pteflags & _PAGE_CACHE_CTL ) == _PAGE_NON_IDEMPOTENT) + rflags |= (HPTE_R_I | HPTE_R_G); + if ((pteflags & _PAGE_CACHE_CTL) == _PAGE_SAO) + rflags |= (HPTE_R_I | HPTE_R_W); return rflags; } @@ -669,6 +676,41 @@ int remove_section_mapping(unsigned long start, unsigned long end) } #endif /* CONFIG_MEMORY_HOTPLUG */ +static void __init hash_init_partition_table(phys_addr_t hash_table, + unsigned long pteg_count) +{ + unsigned long ps_field; + unsigned long htab_size; + unsigned long patb_size = 1UL << PATB_SIZE_SHIFT; + + /* + * slb llp encoding for the page size used in VPM real mode. + * We can ignore that for lpid 0 + */ + ps_field = 0; + htab_size = __ilog2(pteg_count) - 11; + + BUILD_BUG_ON_MSG((PATB_SIZE_SHIFT > 24), "Partition table size too large."); + partition_tb = __va(memblock_alloc_base(patb_size, patb_size, + MEMBLOCK_ALLOC_ANYWHERE)); + + /* Initialize the Partition Table with no entries */ + memset((void *)partition_tb, 0, patb_size); + partition_tb->patb0 = cpu_to_be64(ps_field | hash_table | htab_size); + /* + * FIXME!! This should be done via update_partition table + * For now UPRT is 0 for us. + */ + partition_tb->patb1 = 0; + DBG("Partition table %p\n", partition_tb); + /* + * update partition table control register, + * 64 K size. + */ + mtspr(SPRN_PTCR, __pa(partition_tb) | (PATB_SIZE_SHIFT - 12)); + +} + static void __init htab_initialize(void) { unsigned long table; @@ -737,8 +779,11 @@ static void __init htab_initialize(void) /* Initialize the HPT with no entries */ memset((void *)table, 0, htab_size_bytes); - /* Set SDR1 */ - mtspr(SPRN_SDR1, _SDR1); + if (!cpu_has_feature(CPU_FTR_ARCH_300)) + /* Set SDR1 */ + mtspr(SPRN_SDR1, _SDR1); + else + hash_init_partition_table(table, pteg_count); } prot = pgprot_val(PAGE_KERNEL); @@ -823,8 +868,38 @@ static void __init htab_initialize(void) #undef KB #undef MB -void __init early_init_mmu(void) +void __init hash__early_init_mmu(void) { + /* + * initialize page table size + */ + __pte_frag_nr = H_PTE_FRAG_NR; + __pte_frag_size_shift = H_PTE_FRAG_SIZE_SHIFT; + + __pte_index_size = H_PTE_INDEX_SIZE; + __pmd_index_size = H_PMD_INDEX_SIZE; + __pud_index_size = H_PUD_INDEX_SIZE; + __pgd_index_size = H_PGD_INDEX_SIZE; + __pmd_cache_index = H_PMD_CACHE_INDEX; + __pte_table_size = H_PTE_TABLE_SIZE; + __pmd_table_size = H_PMD_TABLE_SIZE; + __pud_table_size = H_PUD_TABLE_SIZE; + __pgd_table_size = H_PGD_TABLE_SIZE; + /* + * 4k use hugepd format, so for hash set then to + * zero + */ + __pmd_val_bits = 0; + __pud_val_bits = 0; + __pgd_val_bits = 0; + + __kernel_virt_start = H_KERN_VIRT_START; + __kernel_virt_size = H_KERN_VIRT_SIZE; + __vmalloc_start = H_VMALLOC_START; + __vmalloc_end = H_VMALLOC_END; + vmemmap = (struct page *)H_VMEMMAP_BASE; + ioremap_bot = IOREMAP_BASE; + /* Initialize the MMU Hash table and create the linear mapping * of memory. Has to be done before SLB initialization as this is * currently where the page size encoding is obtained. @@ -836,12 +911,16 @@ void __init early_init_mmu(void) } #ifdef CONFIG_SMP -void early_init_mmu_secondary(void) +void hash__early_init_mmu_secondary(void) { /* Initialize hash table for that CPU */ - if (!firmware_has_feature(FW_FEATURE_LPAR)) - mtspr(SPRN_SDR1, _SDR1); - + if (!firmware_has_feature(FW_FEATURE_LPAR)) { + if (!cpu_has_feature(CPU_FTR_ARCH_300)) + mtspr(SPRN_SDR1, _SDR1); + else + mtspr(SPRN_PTCR, + __pa(partition_tb) | (PATB_SIZE_SHIFT - 12)); + } /* Initialize SLB */ slb_initialize(); } @@ -920,7 +999,7 @@ void demote_segment_4k(struct mm_struct *mm, unsigned long addr) * Userspace sets the subpage permissions using the subpage_prot system call. * * Result is 0: full permissions, _PAGE_RW: read-only, - * _PAGE_USER or _PAGE_USER|_PAGE_RW: no access. + * _PAGE_RWX: no access. */ static int subpage_protection(struct mm_struct *mm, unsigned long ea) { @@ -946,8 +1025,13 @@ static int subpage_protection(struct mm_struct *mm, unsigned long ea) /* extract 2-bit bitfield for this 4k subpage */ spp >>= 30 - 2 * ((ea >> 12) & 0xf); - /* turn 0,1,2,3 into combination of _PAGE_USER and _PAGE_RW */ - spp = ((spp & 2) ? _PAGE_USER : 0) | ((spp & 1) ? _PAGE_RW : 0); + /* + * 0 -> full premission + * 1 -> Read only + * 2 -> no access. + * We return the flag that need to be cleared. + */ + spp = ((spp & 2) ? _PAGE_RWX : 0) | ((spp & 1) ? _PAGE_WRITE : 0); return spp; } @@ -1084,7 +1168,7 @@ int hash_page_mm(struct mm_struct *mm, unsigned long ea, /* Pre-check access permissions (will be re-checked atomically * in __hash_page_XX but this pre-check is a fast path */ - if (access & ~pte_val(*ptep)) { + if (!check_pte_access(access, pte_val(*ptep))) { DBG_LOW(" no access !\n"); rc = 1; goto bail; @@ -1122,8 +1206,8 @@ int hash_page_mm(struct mm_struct *mm, unsigned long ea, #endif /* Do actual hashing */ #ifdef CONFIG_PPC_64K_PAGES - /* If _PAGE_4K_PFN is set, make sure this is a 4k segment */ - if ((pte_val(*ptep) & _PAGE_4K_PFN) && psize == MMU_PAGE_64K) { + /* If H_PAGE_4K_PFN is set, make sure this is a 4k segment */ + if ((pte_val(*ptep) & H_PAGE_4K_PFN) && psize == MMU_PAGE_64K) { demote_segment_4k(mm, ea); psize = MMU_PAGE_4K; } @@ -1131,8 +1215,7 @@ int hash_page_mm(struct mm_struct *mm, unsigned long ea, /* If this PTE is non-cacheable and we have restrictions on * using non cacheable large pages, then we switch to 4k */ - if (mmu_ci_restrictions && psize == MMU_PAGE_64K && - (pte_val(*ptep) & _PAGE_NO_CACHE)) { + if (mmu_ci_restrictions && psize == MMU_PAGE_64K && pte_ci(*ptep)) { if (user_region) { demote_segment_4k(mm, ea); psize = MMU_PAGE_4K; @@ -1209,7 +1292,7 @@ EXPORT_SYMBOL_GPL(hash_page); int __hash_page(unsigned long ea, unsigned long msr, unsigned long trap, unsigned long dsisr) { - unsigned long access = _PAGE_PRESENT; + unsigned long access = _PAGE_PRESENT | _PAGE_READ; unsigned long flags = 0; struct mm_struct *mm = current->mm; @@ -1220,14 +1303,18 @@ int __hash_page(unsigned long ea, unsigned long msr, unsigned long trap, flags |= HPTE_NOHPTE_UPDATE; if (dsisr & DSISR_ISSTORE) - access |= _PAGE_RW; + access |= _PAGE_WRITE; /* - * We need to set the _PAGE_USER bit if MSR_PR is set or if we are - * accessing a userspace segment (even from the kernel). We assume - * kernel addresses always have the high bit set. + * We set _PAGE_PRIVILEGED only when + * kernel mode access kernel space. + * + * _PAGE_PRIVILEGED is NOT set + * 1) when kernel mode access user space + * 2) user space access kernel space. */ + access |= _PAGE_PRIVILEGED; if ((msr & MSR_PR) || (REGION_ID(ea) == USER_REGION_ID)) - access |= _PAGE_USER; + access &= ~_PAGE_PRIVILEGED; if (trap == 0x400) access |= _PAGE_EXEC; @@ -1235,6 +1322,30 @@ int __hash_page(unsigned long ea, unsigned long msr, unsigned long trap, return hash_page_mm(mm, ea, access, trap, flags); } +#ifdef CONFIG_PPC_MM_SLICES +static bool should_hash_preload(struct mm_struct *mm, unsigned long ea) +{ + int psize = get_slice_psize(mm, ea); + + /* We only prefault standard pages for now */ + if (unlikely(psize != mm->context.user_psize)) + return false; + + /* + * Don't prefault if subpage protection is enabled for the EA. + */ + if (unlikely((psize == MMU_PAGE_4K) && subpage_protection(mm, ea))) + return false; + + return true; +} +#else +static bool should_hash_preload(struct mm_struct *mm, unsigned long ea) +{ + return true; +} +#endif + void hash_preload(struct mm_struct *mm, unsigned long ea, unsigned long access, unsigned long trap) { @@ -1247,11 +1358,8 @@ void hash_preload(struct mm_struct *mm, unsigned long ea, BUG_ON(REGION_ID(ea) != USER_REGION_ID); -#ifdef CONFIG_PPC_MM_SLICES - /* We only prefault standard pages for now */ - if (unlikely(get_slice_psize(mm, ea) != mm->context.user_psize)) + if (!should_hash_preload(mm, ea)) return; -#endif DBG_LOW("hash_preload(mm=%p, mm->pgdir=%p, ea=%016lx, access=%lx," " trap=%lx\n", mm, mm->pgd, ea, access, trap); @@ -1282,13 +1390,13 @@ void hash_preload(struct mm_struct *mm, unsigned long ea, WARN_ON(hugepage_shift); #ifdef CONFIG_PPC_64K_PAGES - /* If either _PAGE_4K_PFN or _PAGE_NO_CACHE is set (and we are on + /* If either H_PAGE_4K_PFN or cache inhibited is set (and we are on * a 64K kernel), then we don't preload, hash_page() will take * care of it once we actually try to access the page. * That way we don't have to duplicate all of the logic for segment * page size demotion here */ - if (pte_val(*ptep) & (_PAGE_4K_PFN | _PAGE_NO_CACHE)) + if ((pte_val(*ptep) & H_PAGE_4K_PFN) || pte_ci(*ptep)) goto out_exit; #endif /* CONFIG_PPC_64K_PAGES */ @@ -1570,7 +1678,7 @@ void __kernel_map_pages(struct page *page, int numpages, int enable) } #endif /* CONFIG_DEBUG_PAGEALLOC */ -void setup_initial_memory_limit(phys_addr_t first_memblock_base, +void hash__setup_initial_memory_limit(phys_addr_t first_memblock_base, phys_addr_t first_memblock_size) { /* We don't currently support the first MEMBLOCK not mapping 0 diff --git a/arch/powerpc/mm/hugepage-hash64.c b/arch/powerpc/mm/hugepage-hash64.c index eb2accdd76fd..ba3fc229468a 100644 --- a/arch/powerpc/mm/hugepage-hash64.c +++ b/arch/powerpc/mm/hugepage-hash64.c @@ -37,20 +37,20 @@ int __hash_page_thp(unsigned long ea, unsigned long access, unsigned long vsid, old_pmd = pmd_val(pmd); /* If PMD busy, retry the access */ - if (unlikely(old_pmd & _PAGE_BUSY)) + if (unlikely(old_pmd & H_PAGE_BUSY)) return 0; /* If PMD permissions don't match, take page fault */ - if (unlikely(access & ~old_pmd)) + if (unlikely(!check_pte_access(access, old_pmd))) return 1; /* * Try to lock the PTE, add ACCESSED and DIRTY if it was * a write access */ - new_pmd = old_pmd | _PAGE_BUSY | _PAGE_ACCESSED; - if (access & _PAGE_RW) + new_pmd = old_pmd | H_PAGE_BUSY | _PAGE_ACCESSED; + if (access & _PAGE_WRITE) new_pmd |= _PAGE_DIRTY; - } while (old_pmd != __cmpxchg_u64((unsigned long *)pmdp, - old_pmd, new_pmd)); + } while (!pmd_xchg(pmdp, __pmd(old_pmd), __pmd(new_pmd))); + rflags = htab_convert_pte_flags(new_pmd); #if 0 @@ -78,7 +78,7 @@ int __hash_page_thp(unsigned long ea, unsigned long access, unsigned long vsid, * base page size. This is because demote_segment won't flush * hash page table entries. */ - if ((old_pmd & _PAGE_HASHPTE) && !(old_pmd & _PAGE_COMBO)) { + if ((old_pmd & H_PAGE_HASHPTE) && !(old_pmd & H_PAGE_COMBO)) { flush_hash_hugepage(vsid, ea, pmdp, MMU_PAGE_64K, ssize, flags); /* @@ -125,7 +125,7 @@ int __hash_page_thp(unsigned long ea, unsigned long access, unsigned long vsid, hash = hpt_hash(vpn, shift, ssize); /* insert new entry */ pa = pmd_pfn(__pmd(old_pmd)) << PAGE_SHIFT; - new_pmd |= _PAGE_HASHPTE; + new_pmd |= H_PAGE_HASHPTE; repeat: hpte_group = ((hash & htab_hash_mask) * HPTES_PER_GROUP) & ~0x7UL; @@ -169,17 +169,17 @@ repeat: mark_hpte_slot_valid(hpte_slot_array, index, slot); } /* - * Mark the pte with _PAGE_COMBO, if we are trying to hash it with + * Mark the pte with H_PAGE_COMBO, if we are trying to hash it with * base page size 4k. */ if (psize == MMU_PAGE_4K) - new_pmd |= _PAGE_COMBO; + new_pmd |= H_PAGE_COMBO; /* * The hpte valid is stored in the pgtable whose address is in the * second half of the PMD. Order this against clearing of the busy bit in * huge pmd. */ smp_wmb(); - *pmdp = __pmd(new_pmd & ~_PAGE_BUSY); + *pmdp = __pmd(new_pmd & ~H_PAGE_BUSY); return 0; } diff --git a/arch/powerpc/mm/hugetlbpage-hash64.c b/arch/powerpc/mm/hugetlbpage-hash64.c index 8555fce902fe..3058560b6121 100644 --- a/arch/powerpc/mm/hugetlbpage-hash64.c +++ b/arch/powerpc/mm/hugetlbpage-hash64.c @@ -47,18 +47,19 @@ int __hash_page_huge(unsigned long ea, unsigned long access, unsigned long vsid, do { old_pte = pte_val(*ptep); /* If PTE busy, retry the access */ - if (unlikely(old_pte & _PAGE_BUSY)) + if (unlikely(old_pte & H_PAGE_BUSY)) return 0; /* If PTE permissions don't match, take page fault */ - if (unlikely(access & ~old_pte)) + if (unlikely(!check_pte_access(access, old_pte))) return 1; + /* Try to lock the PTE, add ACCESSED and DIRTY if it was * a write access */ - new_pte = old_pte | _PAGE_BUSY | _PAGE_ACCESSED; - if (access & _PAGE_RW) + new_pte = old_pte | H_PAGE_BUSY | _PAGE_ACCESSED; + if (access & _PAGE_WRITE) new_pte |= _PAGE_DIRTY; - } while(old_pte != __cmpxchg_u64((unsigned long *)ptep, - old_pte, new_pte)); + } while(!pte_xchg(ptep, __pte(old_pte), __pte(new_pte))); + rflags = htab_convert_pte_flags(new_pte); sz = ((1UL) << shift); @@ -68,28 +69,28 @@ int __hash_page_huge(unsigned long ea, unsigned long access, unsigned long vsid, rflags = hash_page_do_lazy_icache(rflags, __pte(old_pte), trap); /* Check if pte already has an hpte (case 2) */ - if (unlikely(old_pte & _PAGE_HASHPTE)) { + if (unlikely(old_pte & H_PAGE_HASHPTE)) { /* There MIGHT be an HPTE for this pte */ unsigned long hash, slot; hash = hpt_hash(vpn, shift, ssize); - if (old_pte & _PAGE_F_SECOND) + if (old_pte & H_PAGE_F_SECOND) hash = ~hash; slot = (hash & htab_hash_mask) * HPTES_PER_GROUP; - slot += (old_pte & _PAGE_F_GIX) >> _PAGE_F_GIX_SHIFT; + slot += (old_pte & H_PAGE_F_GIX) >> H_PAGE_F_GIX_SHIFT; if (ppc_md.hpte_updatepp(slot, rflags, vpn, mmu_psize, mmu_psize, ssize, flags) == -1) old_pte &= ~_PAGE_HPTEFLAGS; } - if (likely(!(old_pte & _PAGE_HASHPTE))) { + if (likely(!(old_pte & H_PAGE_HASHPTE))) { unsigned long hash = hpt_hash(vpn, shift, ssize); pa = pte_pfn(__pte(old_pte)) << PAGE_SHIFT; /* clear HPTE slot informations in new PTE */ - new_pte = (new_pte & ~_PAGE_HPTEFLAGS) | _PAGE_HASHPTE; + new_pte = (new_pte & ~_PAGE_HPTEFLAGS) | H_PAGE_HASHPTE; slot = hpte_insert_repeating(hash, vpn, pa, rflags, 0, mmu_psize, ssize); @@ -105,14 +106,14 @@ int __hash_page_huge(unsigned long ea, unsigned long access, unsigned long vsid, return -1; } - new_pte |= (slot << _PAGE_F_GIX_SHIFT) & - (_PAGE_F_SECOND | _PAGE_F_GIX); + new_pte |= (slot << H_PAGE_F_GIX_SHIFT) & + (H_PAGE_F_SECOND | H_PAGE_F_GIX); } /* * No need to use ldarx/stdcx here */ - *ptep = __pte(new_pte & ~_PAGE_BUSY); + *ptep = __pte(new_pte & ~H_PAGE_BUSY); return 0; } diff --git a/arch/powerpc/mm/hugetlbpage-radix.c b/arch/powerpc/mm/hugetlbpage-radix.c new file mode 100644 index 000000000000..1e11559e1aac --- /dev/null +++ b/arch/powerpc/mm/hugetlbpage-radix.c @@ -0,0 +1,87 @@ +#include <linux/mm.h> +#include <linux/hugetlb.h> +#include <asm/pgtable.h> +#include <asm/pgalloc.h> +#include <asm/cacheflush.h> +#include <asm/machdep.h> +#include <asm/mman.h> + +void radix__flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr) +{ + unsigned long ap, shift; + struct hstate *hstate = hstate_file(vma->vm_file); + + shift = huge_page_shift(hstate); + if (shift == mmu_psize_defs[MMU_PAGE_2M].shift) + ap = mmu_get_ap(MMU_PAGE_2M); + else if (shift == mmu_psize_defs[MMU_PAGE_1G].shift) + ap = mmu_get_ap(MMU_PAGE_1G); + else { + WARN(1, "Wrong huge page shift\n"); + return ; + } + radix___flush_tlb_page(vma->vm_mm, vmaddr, ap, 0); +} + +void radix__local_flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr) +{ + unsigned long ap, shift; + struct hstate *hstate = hstate_file(vma->vm_file); + + shift = huge_page_shift(hstate); + if (shift == mmu_psize_defs[MMU_PAGE_2M].shift) + ap = mmu_get_ap(MMU_PAGE_2M); + else if (shift == mmu_psize_defs[MMU_PAGE_1G].shift) + ap = mmu_get_ap(MMU_PAGE_1G); + else { + WARN(1, "Wrong huge page shift\n"); + return ; + } + radix___local_flush_tlb_page(vma->vm_mm, vmaddr, ap, 0); +} + +/* + * A vairant of hugetlb_get_unmapped_area doing topdown search + * FIXME!! should we do as x86 does or non hugetlb area does ? + * ie, use topdown or not based on mmap_is_legacy check ? + */ +unsigned long +radix__hugetlb_get_unmapped_area(struct file *file, unsigned long addr, + unsigned long len, unsigned long pgoff, + unsigned long flags) +{ + struct mm_struct *mm = current->mm; + struct vm_area_struct *vma; + struct hstate *h = hstate_file(file); + struct vm_unmapped_area_info info; + + if (len & ~huge_page_mask(h)) + return -EINVAL; + if (len > TASK_SIZE) + return -ENOMEM; + + if (flags & MAP_FIXED) { + if (prepare_hugepage_range(file, addr, len)) + return -EINVAL; + return addr; + } + + if (addr) { + addr = ALIGN(addr, huge_page_size(h)); + vma = find_vma(mm, addr); + if (TASK_SIZE - len >= addr && + (!vma || addr + len <= vma->vm_start)) + return addr; + } + /* + * We are always doing an topdown search here. Slice code + * does that too. + */ + info.flags = VM_UNMAPPED_AREA_TOPDOWN; + info.length = len; + info.low_limit = PAGE_SIZE; + info.high_limit = current->mm->mmap_base; + info.align_mask = PAGE_MASK & ~huge_page_mask(h); + info.align_offset = 0; + return vm_unmapped_area(&info); +} diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c index a4a90a869999..5aac1a3f86cd 100644 --- a/arch/powerpc/mm/hugetlbpage.c +++ b/arch/powerpc/mm/hugetlbpage.c @@ -711,6 +711,9 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, struct hstate *hstate = hstate_file(file); int mmu_psize = shift_to_mmu_psize(huge_page_shift(hstate)); + if (radix_enabled()) + return radix__hugetlb_get_unmapped_area(file, addr, len, + pgoff, flags); return slice_get_unmapped_area(addr, len, flags, mmu_psize, 1); } #endif @@ -719,14 +722,14 @@ unsigned long vma_mmu_pagesize(struct vm_area_struct *vma) { #ifdef CONFIG_PPC_MM_SLICES unsigned int psize = get_slice_psize(vma->vm_mm, vma->vm_start); - - return 1UL << mmu_psize_to_shift(psize); -#else + /* With radix we don't use slice, so derive it from vma*/ + if (!radix_enabled()) + return 1UL << mmu_psize_to_shift(psize); +#endif if (!is_vm_hugetlb_page(vma)) return PAGE_SIZE; return huge_page_size(hstate_vma(vma)); -#endif } static inline bool is_power_of_4(unsigned long x) @@ -825,7 +828,7 @@ static int __init hugetlbpage_init(void) { int psize; - if (!mmu_has_feature(MMU_FTR_16M_PAGE)) + if (!radix_enabled() && !mmu_has_feature(MMU_FTR_16M_PAGE)) return -ENODEV; for (psize = 0; psize < MMU_PAGE_COUNT; ++psize) { @@ -865,6 +868,9 @@ static int __init hugetlbpage_init(void) HPAGE_SHIFT = mmu_psize_defs[MMU_PAGE_16M].shift; else if (mmu_psize_defs[MMU_PAGE_1M].shift) HPAGE_SHIFT = mmu_psize_defs[MMU_PAGE_1M].shift; + else if (mmu_psize_defs[MMU_PAGE_2M].shift) + HPAGE_SHIFT = mmu_psize_defs[MMU_PAGE_2M].shift; + return 0; } @@ -1005,9 +1011,9 @@ int gup_hugepte(pte_t *ptep, unsigned long sz, unsigned long addr, end = pte_end; pte = READ_ONCE(*ptep); - mask = _PAGE_PRESENT | _PAGE_USER; + mask = _PAGE_PRESENT | _PAGE_READ; if (write) - mask |= _PAGE_RW; + mask |= _PAGE_WRITE; if ((pte_val(pte) & mask) != mask) return 0; diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c index ba655666186d..33709bdb0419 100644 --- a/arch/powerpc/mm/init_64.c +++ b/arch/powerpc/mm/init_64.c @@ -66,11 +66,11 @@ #include "mmu_decl.h" #ifdef CONFIG_PPC_STD_MMU_64 -#if PGTABLE_RANGE > USER_VSID_RANGE +#if H_PGTABLE_RANGE > USER_VSID_RANGE #warning Limited user VSID range means pagetable space is wasted #endif -#if (TASK_SIZE_USER64 < PGTABLE_RANGE) && (TASK_SIZE_USER64 < USER_VSID_RANGE) +#if (TASK_SIZE_USER64 < H_PGTABLE_RANGE) && (TASK_SIZE_USER64 < USER_VSID_RANGE) #warning TASK_SIZE is smaller than it needs to be. #endif #endif /* CONFIG_PPC_STD_MMU_64 */ @@ -189,75 +189,6 @@ static int __meminit vmemmap_populated(unsigned long start, int page_size) return 0; } -/* On hash-based CPUs, the vmemmap is bolted in the hash table. - * - * On Book3E CPUs, the vmemmap is currently mapped in the top half of - * the vmalloc space using normal page tables, though the size of - * pages encoded in the PTEs can be different - */ - -#ifdef CONFIG_PPC_BOOK3E -static int __meminit vmemmap_create_mapping(unsigned long start, - unsigned long page_size, - unsigned long phys) -{ - /* Create a PTE encoding without page size */ - unsigned long i, flags = _PAGE_PRESENT | _PAGE_ACCESSED | - _PAGE_KERNEL_RW; - - /* PTEs only contain page size encodings up to 32M */ - BUG_ON(mmu_psize_defs[mmu_vmemmap_psize].enc > 0xf); - - /* Encode the size in the PTE */ - flags |= mmu_psize_defs[mmu_vmemmap_psize].enc << 8; - - /* For each PTE for that area, map things. Note that we don't - * increment phys because all PTEs are of the large size and - * thus must have the low bits clear - */ - for (i = 0; i < page_size; i += PAGE_SIZE) - BUG_ON(map_kernel_page(start + i, phys, flags)); - - return 0; -} - -#ifdef CONFIG_MEMORY_HOTPLUG -static void vmemmap_remove_mapping(unsigned long start, - unsigned long page_size) -{ -} -#endif -#else /* CONFIG_PPC_BOOK3E */ -static int __meminit vmemmap_create_mapping(unsigned long start, - unsigned long page_size, - unsigned long phys) -{ - int rc = htab_bolt_mapping(start, start + page_size, phys, - pgprot_val(PAGE_KERNEL), - mmu_vmemmap_psize, mmu_kernel_ssize); - if (rc < 0) { - int rc2 = htab_remove_mapping(start, start + page_size, - mmu_vmemmap_psize, - mmu_kernel_ssize); - BUG_ON(rc2 && (rc2 != -ENOENT)); - } - return rc; -} - -#ifdef CONFIG_MEMORY_HOTPLUG -static void vmemmap_remove_mapping(unsigned long start, - unsigned long page_size) -{ - int rc = htab_remove_mapping(start, start + page_size, - mmu_vmemmap_psize, - mmu_kernel_ssize); - BUG_ON((rc < 0) && (rc != -ENOENT)); - WARN_ON(rc == -ENOENT); -} -#endif - -#endif /* CONFIG_PPC_BOOK3E */ - struct vmemmap_backing *vmemmap_list; static struct vmemmap_backing *next; static int num_left; diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index ac79dbde1015..2fd57fa48429 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -68,12 +68,15 @@ pte_t *kmap_pte; EXPORT_SYMBOL(kmap_pte); pgprot_t kmap_prot; EXPORT_SYMBOL(kmap_prot); +#define TOP_ZONE ZONE_HIGHMEM static inline pte_t *virt_to_kpte(unsigned long vaddr) { return pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k(vaddr), vaddr), vaddr), vaddr); } +#else +#define TOP_ZONE ZONE_NORMAL #endif int page_is_ram(unsigned long pfn) @@ -267,14 +270,9 @@ void __init limit_zone_pfn(enum zone_type zone, unsigned long pfn_limit) */ int dma_pfn_limit_to_zone(u64 pfn_limit) { - enum zone_type top_zone = ZONE_NORMAL; int i; -#ifdef CONFIG_HIGHMEM - top_zone = ZONE_HIGHMEM; -#endif - - for (i = top_zone; i >= 0; i--) { + for (i = TOP_ZONE; i >= 0; i--) { if (max_zone_pfns[i] <= pfn_limit) return i; } @@ -289,7 +287,6 @@ void __init paging_init(void) { unsigned long long total_ram = memblock_phys_mem_size(); phys_addr_t top_of_ram = memblock_end_of_DRAM(); - enum zone_type top_zone; #ifdef CONFIG_PPC32 unsigned long v = __fix_to_virt(__end_of_fixed_addresses - 1); @@ -313,13 +310,9 @@ void __init paging_init(void) (long int)((top_of_ram - total_ram) >> 20)); #ifdef CONFIG_HIGHMEM - top_zone = ZONE_HIGHMEM; limit_zone_pfn(ZONE_NORMAL, lowmem_end_addr >> PAGE_SHIFT); -#else - top_zone = ZONE_NORMAL; #endif - - limit_zone_pfn(top_zone, top_of_ram >> PAGE_SHIFT); + limit_zone_pfn(TOP_ZONE, top_of_ram >> PAGE_SHIFT); zone_limits_final = true; free_area_init_nodes(max_zone_pfns); @@ -498,7 +491,10 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, * We don't need to worry about _PAGE_PRESENT here because we are * called with either mm->page_table_lock held or ptl lock held */ - unsigned long access = 0, trap; + unsigned long access, trap; + + if (radix_enabled()) + return; /* We only want HPTEs for linux PTEs that have _PAGE_ACCESSED set */ if (!pte_young(*ptep) || address >= TASK_SIZE) @@ -511,13 +507,19 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, * * We also avoid filling the hash if not coming from a fault */ - if (current->thread.regs == NULL) - return; - trap = TRAP(current->thread.regs); - if (trap == 0x400) - access |= _PAGE_EXEC; - else if (trap != 0x300) + + trap = current->thread.regs ? TRAP(current->thread.regs) : 0UL; + switch (trap) { + case 0x300: + access = 0UL; + break; + case 0x400: + access = _PAGE_EXEC; + break; + default: return; + } + hash_preload(vma->vm_mm, address, access, trap); #endif /* CONFIG_PPC_STD_MMU */ #if (defined(CONFIG_PPC_BOOK3E_64) || defined(CONFIG_PPC_FSL_BOOK3E)) \ diff --git a/arch/powerpc/mm/mmap.c b/arch/powerpc/mm/mmap.c index 4087705ba90f..2f1e44362198 100644 --- a/arch/powerpc/mm/mmap.c +++ b/arch/powerpc/mm/mmap.c @@ -26,6 +26,9 @@ #include <linux/mm.h> #include <linux/random.h> #include <linux/sched.h> +#include <linux/elf-randomize.h> +#include <linux/security.h> +#include <linux/mman.h> /* * Top of mmap area (just below the process stack). @@ -78,6 +81,111 @@ static inline unsigned long mmap_base(unsigned long rnd) return PAGE_ALIGN(TASK_SIZE - gap - rnd); } +#ifdef CONFIG_PPC_RADIX_MMU +/* + * Same function as generic code used only for radix, because we don't need to overload + * the generic one. But we will have to duplicate, because hash select + * HAVE_ARCH_UNMAPPED_AREA + */ +static unsigned long +radix__arch_get_unmapped_area(struct file *filp, unsigned long addr, + unsigned long len, unsigned long pgoff, + unsigned long flags) +{ + struct mm_struct *mm = current->mm; + struct vm_area_struct *vma; + struct vm_unmapped_area_info info; + + if (len > TASK_SIZE - mmap_min_addr) + return -ENOMEM; + + if (flags & MAP_FIXED) + return addr; + + if (addr) { + addr = PAGE_ALIGN(addr); + vma = find_vma(mm, addr); + if (TASK_SIZE - len >= addr && addr >= mmap_min_addr && + (!vma || addr + len <= vma->vm_start)) + return addr; + } + + info.flags = 0; + info.length = len; + info.low_limit = mm->mmap_base; + info.high_limit = TASK_SIZE; + info.align_mask = 0; + return vm_unmapped_area(&info); +} + +static unsigned long +radix__arch_get_unmapped_area_topdown(struct file *filp, + const unsigned long addr0, + const unsigned long len, + const unsigned long pgoff, + const unsigned long flags) +{ + struct vm_area_struct *vma; + struct mm_struct *mm = current->mm; + unsigned long addr = addr0; + struct vm_unmapped_area_info info; + + /* requested length too big for entire address space */ + if (len > TASK_SIZE - mmap_min_addr) + return -ENOMEM; + + if (flags & MAP_FIXED) + return addr; + + /* requesting a specific address */ + if (addr) { + addr = PAGE_ALIGN(addr); + vma = find_vma(mm, addr); + if (TASK_SIZE - len >= addr && addr >= mmap_min_addr && + (!vma || addr + len <= vma->vm_start)) + return addr; + } + + info.flags = VM_UNMAPPED_AREA_TOPDOWN; + info.length = len; + info.low_limit = max(PAGE_SIZE, mmap_min_addr); + info.high_limit = mm->mmap_base; + info.align_mask = 0; + addr = vm_unmapped_area(&info); + + /* + * A failed mmap() very likely causes application failure, + * so fall back to the bottom-up function here. This scenario + * can happen with large stack limits and large mmap() + * allocations. + */ + if (addr & ~PAGE_MASK) { + VM_BUG_ON(addr != -ENOMEM); + info.flags = 0; + info.low_limit = TASK_UNMAPPED_BASE; + info.high_limit = TASK_SIZE; + addr = vm_unmapped_area(&info); + } + + return addr; +} + +static void radix__arch_pick_mmap_layout(struct mm_struct *mm, + unsigned long random_factor) +{ + if (mmap_is_legacy()) { + mm->mmap_base = TASK_UNMAPPED_BASE; + mm->get_unmapped_area = radix__arch_get_unmapped_area; + } else { + mm->mmap_base = mmap_base(random_factor); + mm->get_unmapped_area = radix__arch_get_unmapped_area_topdown; + } +} +#else +/* dummy */ +extern void radix__arch_pick_mmap_layout(struct mm_struct *mm, + unsigned long random_factor); +#endif /* * This function, called very early during the creation of a new * process VM image, sets up which VM layout function to use: @@ -89,6 +197,8 @@ void arch_pick_mmap_layout(struct mm_struct *mm) if (current->flags & PF_RANDOMIZE) random_factor = arch_mmap_rnd(); + if (radix_enabled()) + return radix__arch_pick_mmap_layout(mm, random_factor); /* * Fall back to the standard layout if the personality * bit is set, or if the expected stack growth is unlimited: diff --git a/arch/powerpc/mm/mmu_context_hash64.c b/arch/powerpc/mm/mmu_context_book3s64.c index 9ca6fe16cb29..227b2a6c4544 100644 --- a/arch/powerpc/mm/mmu_context_hash64.c +++ b/arch/powerpc/mm/mmu_context_book3s64.c @@ -58,6 +58,17 @@ again: return index; } EXPORT_SYMBOL_GPL(__init_new_context); +static int radix__init_new_context(struct mm_struct *mm, int index) +{ + unsigned long rts_field; + + /* + * set the process table entry, + */ + rts_field = 3ull << PPC_BITLSHIFT(2); + process_tb[index].prtb0 = cpu_to_be64(rts_field | __pa(mm->pgd) | RADIX_PGD_INDEX_SIZE); + return 0; +} int init_new_context(struct task_struct *tsk, struct mm_struct *mm) { @@ -67,13 +78,27 @@ int init_new_context(struct task_struct *tsk, struct mm_struct *mm) if (index < 0) return index; - /* The old code would re-promote on fork, we don't do that - * when using slices as it could cause problem promoting slices - * that have been forced down to 4K - */ - if (slice_mm_new_context(mm)) - slice_set_user_psize(mm, mmu_virtual_psize); - subpage_prot_init_new_context(mm); + if (radix_enabled()) { + radix__init_new_context(mm, index); + } else { + + /* The old code would re-promote on fork, we don't do that + * when using slices as it could cause problem promoting slices + * that have been forced down to 4K + * + * For book3s we have MMU_NO_CONTEXT set to be ~0. Hence check + * explicitly against context.id == 0. This ensures that we + * properly initialize context slice details for newly allocated + * mm's (which will have id == 0) and don't alter context slice + * inherited via fork (which will have id != 0). + * + * We should not be calling init_new_context() on init_mm. Hence a + * check against 0 is ok. + */ + if (mm->context.id == 0) + slice_set_user_psize(mm, mmu_virtual_psize); + subpage_prot_init_new_context(mm); + } mm->context.id = index; #ifdef CONFIG_PPC_ICSWX mm->context.cop_lockp = kmalloc(sizeof(spinlock_t), GFP_KERNEL); @@ -144,8 +169,19 @@ void destroy_context(struct mm_struct *mm) mm->context.cop_lockp = NULL; #endif /* CONFIG_PPC_ICSWX */ + if (radix_enabled()) + process_tb[mm->context.id].prtb1 = 0; + else + subpage_prot_free(mm); destroy_pagetable_page(mm); __destroy_context(mm->context.id); - subpage_prot_free(mm); mm->context.id = MMU_NO_CONTEXT; } + +#ifdef CONFIG_PPC_RADIX_MMU +void radix__switch_mmu_context(struct mm_struct *prev, struct mm_struct *next) +{ + mtspr(SPRN_PID, next->context.id); + asm volatile("isync": : :"memory"); +} +#endif diff --git a/arch/powerpc/mm/mmu_context_nohash.c b/arch/powerpc/mm/mmu_context_nohash.c index 986afbc22c76..7d95bc402dba 100644 --- a/arch/powerpc/mm/mmu_context_nohash.c +++ b/arch/powerpc/mm/mmu_context_nohash.c @@ -226,7 +226,8 @@ static void context_check_map(void) static void context_check_map(void) { } #endif -void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next) +void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next, + struct task_struct *tsk) { unsigned int i, id, cpu = smp_processor_id(); unsigned long *map; @@ -334,8 +335,7 @@ int init_new_context(struct task_struct *t, struct mm_struct *mm) mm->context.active = 0; #ifdef CONFIG_PPC_MM_SLICES - if (slice_mm_new_context(mm)) - slice_set_user_psize(mm, mmu_virtual_psize); + slice_set_user_psize(mm, mmu_virtual_psize); #endif return 0; diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h index bfb7c0bcabd5..6af65327c993 100644 --- a/arch/powerpc/mm/mmu_decl.h +++ b/arch/powerpc/mm/mmu_decl.h @@ -108,11 +108,6 @@ extern unsigned long Hash_size, Hash_mask; #endif /* CONFIG_PPC32 */ -#ifdef CONFIG_PPC64 -extern int map_kernel_page(unsigned long ea, unsigned long pa, - unsigned long flags); -#endif /* CONFIG_PPC64 */ - extern unsigned long ioremap_bot; extern unsigned long __max_low_memory; extern phys_addr_t __initial_memory_limit_addr; diff --git a/arch/powerpc/mm/pgtable-book3e.c b/arch/powerpc/mm/pgtable-book3e.c new file mode 100644 index 000000000000..a2298930f990 --- /dev/null +++ b/arch/powerpc/mm/pgtable-book3e.c @@ -0,0 +1,122 @@ +/* + * Copyright 2005, Paul Mackerras, IBM Corporation. + * Copyright 2009, Benjamin Herrenschmidt, IBM Corporation. + * Copyright 2015-2016, Aneesh Kumar K.V, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <linux/sched.h> +#include <linux/memblock.h> +#include <asm/pgalloc.h> +#include <asm/tlb.h> +#include <asm/dma.h> + +#include "mmu_decl.h" + +#ifdef CONFIG_SPARSEMEM_VMEMMAP +/* + * On Book3E CPUs, the vmemmap is currently mapped in the top half of + * the vmalloc space using normal page tables, though the size of + * pages encoded in the PTEs can be different + */ +int __meminit vmemmap_create_mapping(unsigned long start, + unsigned long page_size, + unsigned long phys) +{ + /* Create a PTE encoding without page size */ + unsigned long i, flags = _PAGE_PRESENT | _PAGE_ACCESSED | + _PAGE_KERNEL_RW; + + /* PTEs only contain page size encodings up to 32M */ + BUG_ON(mmu_psize_defs[mmu_vmemmap_psize].enc > 0xf); + + /* Encode the size in the PTE */ + flags |= mmu_psize_defs[mmu_vmemmap_psize].enc << 8; + + /* For each PTE for that area, map things. Note that we don't + * increment phys because all PTEs are of the large size and + * thus must have the low bits clear + */ + for (i = 0; i < page_size; i += PAGE_SIZE) + BUG_ON(map_kernel_page(start + i, phys, flags)); + + return 0; +} + +#ifdef CONFIG_MEMORY_HOTPLUG +void vmemmap_remove_mapping(unsigned long start, + unsigned long page_size) +{ +} +#endif +#endif /* CONFIG_SPARSEMEM_VMEMMAP */ + +static __ref void *early_alloc_pgtable(unsigned long size) +{ + void *pt; + + pt = __va(memblock_alloc_base(size, size, __pa(MAX_DMA_ADDRESS))); + memset(pt, 0, size); + + return pt; +} + +/* + * map_kernel_page currently only called by __ioremap + * map_kernel_page adds an entry to the ioremap page table + * and adds an entry to the HPT, possibly bolting it + */ +int map_kernel_page(unsigned long ea, unsigned long pa, unsigned long flags) +{ + pgd_t *pgdp; + pud_t *pudp; + pmd_t *pmdp; + pte_t *ptep; + + BUILD_BUG_ON(TASK_SIZE_USER64 > PGTABLE_RANGE); + if (slab_is_available()) { + pgdp = pgd_offset_k(ea); + pudp = pud_alloc(&init_mm, pgdp, ea); + if (!pudp) + return -ENOMEM; + pmdp = pmd_alloc(&init_mm, pudp, ea); + if (!pmdp) + return -ENOMEM; + ptep = pte_alloc_kernel(pmdp, ea); + if (!ptep) + return -ENOMEM; + set_pte_at(&init_mm, ea, ptep, pfn_pte(pa >> PAGE_SHIFT, + __pgprot(flags))); + } else { + pgdp = pgd_offset_k(ea); +#ifndef __PAGETABLE_PUD_FOLDED + if (pgd_none(*pgdp)) { + pudp = early_alloc_pgtable(PUD_TABLE_SIZE); + BUG_ON(pudp == NULL); + pgd_populate(&init_mm, pgdp, pudp); + } +#endif /* !__PAGETABLE_PUD_FOLDED */ + pudp = pud_offset(pgdp, ea); + if (pud_none(*pudp)) { + pmdp = early_alloc_pgtable(PMD_TABLE_SIZE); + BUG_ON(pmdp == NULL); + pud_populate(&init_mm, pudp, pmdp); + } + pmdp = pmd_offset(pudp, ea); + if (!pmd_present(*pmdp)) { + ptep = early_alloc_pgtable(PAGE_SIZE); + BUG_ON(ptep == NULL); + pmd_populate_kernel(&init_mm, pmdp, ptep); + } + ptep = pte_offset_kernel(pmdp, ea); + set_pte_at(&init_mm, ea, ptep, pfn_pte(pa >> PAGE_SHIFT, + __pgprot(flags))); + } + + smp_wmb(); + return 0; +} diff --git a/arch/powerpc/mm/pgtable-book3s64.c b/arch/powerpc/mm/pgtable-book3s64.c new file mode 100644 index 000000000000..eb4451144746 --- /dev/null +++ b/arch/powerpc/mm/pgtable-book3s64.c @@ -0,0 +1,118 @@ +/* + * Copyright 2015-2016, Aneesh Kumar K.V, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <linux/sched.h> +#include <asm/pgalloc.h> +#include <asm/tlb.h> + +#include "mmu_decl.h" +#include <trace/events/thp.h> + +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +/* + * This is called when relaxing access to a hugepage. It's also called in the page + * fault path when we don't hit any of the major fault cases, ie, a minor + * update of _PAGE_ACCESSED, _PAGE_DIRTY, etc... The generic code will have + * handled those two for us, we additionally deal with missing execute + * permission here on some processors + */ +int pmdp_set_access_flags(struct vm_area_struct *vma, unsigned long address, + pmd_t *pmdp, pmd_t entry, int dirty) +{ + int changed; +#ifdef CONFIG_DEBUG_VM + WARN_ON(!pmd_trans_huge(*pmdp)); + assert_spin_locked(&vma->vm_mm->page_table_lock); +#endif + changed = !pmd_same(*(pmdp), entry); + if (changed) { + __ptep_set_access_flags(pmdp_ptep(pmdp), pmd_pte(entry)); + /* + * Since we are not supporting SW TLB systems, we don't + * have any thing similar to flush_tlb_page_nohash() + */ + } + return changed; +} + +int pmdp_test_and_clear_young(struct vm_area_struct *vma, + unsigned long address, pmd_t *pmdp) +{ + return __pmdp_test_and_clear_young(vma->vm_mm, address, pmdp); +} +/* + * set a new huge pmd. We should not be called for updating + * an existing pmd entry. That should go via pmd_hugepage_update. + */ +void set_pmd_at(struct mm_struct *mm, unsigned long addr, + pmd_t *pmdp, pmd_t pmd) +{ +#ifdef CONFIG_DEBUG_VM + WARN_ON(pte_present(pmd_pte(*pmdp)) && !pte_protnone(pmd_pte(*pmdp))); + assert_spin_locked(&mm->page_table_lock); + WARN_ON(!pmd_trans_huge(pmd)); +#endif + trace_hugepage_set_pmd(addr, pmd_val(pmd)); + return set_pte_at(mm, addr, pmdp_ptep(pmdp), pmd_pte(pmd)); +} +/* + * We use this to invalidate a pmdp entry before switching from a + * hugepte to regular pmd entry. + */ +void pmdp_invalidate(struct vm_area_struct *vma, unsigned long address, + pmd_t *pmdp) +{ + pmd_hugepage_update(vma->vm_mm, address, pmdp, _PAGE_PRESENT, 0); + flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE); + /* + * This ensures that generic code that rely on IRQ disabling + * to prevent a parallel THP split work as expected. + */ + kick_all_cpus_sync(); +} + +static pmd_t pmd_set_protbits(pmd_t pmd, pgprot_t pgprot) +{ + return __pmd(pmd_val(pmd) | pgprot_val(pgprot)); +} + +pmd_t pfn_pmd(unsigned long pfn, pgprot_t pgprot) +{ + unsigned long pmdv; + + pmdv = (pfn << PAGE_SHIFT) & PTE_RPN_MASK; + return pmd_set_protbits(__pmd(pmdv), pgprot); +} + +pmd_t mk_pmd(struct page *page, pgprot_t pgprot) +{ + return pfn_pmd(page_to_pfn(page), pgprot); +} + +pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot) +{ + unsigned long pmdv; + + pmdv = pmd_val(pmd); + pmdv &= _HPAGE_CHG_MASK; + return pmd_set_protbits(__pmd(pmdv), newprot); +} + +/* + * This is called at the end of handling a user page fault, when the + * fault has been handled by updating a HUGE PMD entry in the linux page tables. + * We use it to preload an HPTE into the hash table corresponding to + * the updated linux HUGE PMD entry. + */ +void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr, + pmd_t *pmd) +{ + return; +} +#endif /* CONFIG_TRANSPARENT_HUGEPAGE */ diff --git a/arch/powerpc/mm/pgtable-hash64.c b/arch/powerpc/mm/pgtable-hash64.c new file mode 100644 index 000000000000..c23e286a6b8f --- /dev/null +++ b/arch/powerpc/mm/pgtable-hash64.c @@ -0,0 +1,342 @@ +/* + * Copyright 2005, Paul Mackerras, IBM Corporation. + * Copyright 2009, Benjamin Herrenschmidt, IBM Corporation. + * Copyright 2015-2016, Aneesh Kumar K.V, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <linux/sched.h> +#include <asm/pgalloc.h> +#include <asm/tlb.h> + +#include "mmu_decl.h" + +#define CREATE_TRACE_POINTS +#include <trace/events/thp.h> + +#ifdef CONFIG_SPARSEMEM_VMEMMAP +/* + * On hash-based CPUs, the vmemmap is bolted in the hash table. + * + */ +int __meminit hash__vmemmap_create_mapping(unsigned long start, + unsigned long page_size, + unsigned long phys) +{ + int rc = htab_bolt_mapping(start, start + page_size, phys, + pgprot_val(PAGE_KERNEL), + mmu_vmemmap_psize, mmu_kernel_ssize); + if (rc < 0) { + int rc2 = htab_remove_mapping(start, start + page_size, + mmu_vmemmap_psize, + mmu_kernel_ssize); + BUG_ON(rc2 && (rc2 != -ENOENT)); + } + return rc; +} + +#ifdef CONFIG_MEMORY_HOTPLUG +void hash__vmemmap_remove_mapping(unsigned long start, + unsigned long page_size) +{ + int rc = htab_remove_mapping(start, start + page_size, + mmu_vmemmap_psize, + mmu_kernel_ssize); + BUG_ON((rc < 0) && (rc != -ENOENT)); + WARN_ON(rc == -ENOENT); +} +#endif +#endif /* CONFIG_SPARSEMEM_VMEMMAP */ + +/* + * map_kernel_page currently only called by __ioremap + * map_kernel_page adds an entry to the ioremap page table + * and adds an entry to the HPT, possibly bolting it + */ +int hash__map_kernel_page(unsigned long ea, unsigned long pa, unsigned long flags) +{ + pgd_t *pgdp; + pud_t *pudp; + pmd_t *pmdp; + pte_t *ptep; + + BUILD_BUG_ON(TASK_SIZE_USER64 > H_PGTABLE_RANGE); + if (slab_is_available()) { + pgdp = pgd_offset_k(ea); + pudp = pud_alloc(&init_mm, pgdp, ea); + if (!pudp) + return -ENOMEM; + pmdp = pmd_alloc(&init_mm, pudp, ea); + if (!pmdp) + return -ENOMEM; + ptep = pte_alloc_kernel(pmdp, ea); + if (!ptep) + return -ENOMEM; + set_pte_at(&init_mm, ea, ptep, pfn_pte(pa >> PAGE_SHIFT, + __pgprot(flags))); + } else { + /* + * If the mm subsystem is not fully up, we cannot create a + * linux page table entry for this mapping. Simply bolt an + * entry in the hardware page table. + * + */ + if (htab_bolt_mapping(ea, ea + PAGE_SIZE, pa, flags, + mmu_io_psize, mmu_kernel_ssize)) { + printk(KERN_ERR "Failed to do bolted mapping IO " + "memory at %016lx !\n", pa); + return -ENOMEM; + } + } + + smp_wmb(); + return 0; +} + +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + +unsigned long hash__pmd_hugepage_update(struct mm_struct *mm, unsigned long addr, + pmd_t *pmdp, unsigned long clr, + unsigned long set) +{ + __be64 old_be, tmp; + unsigned long old; + +#ifdef CONFIG_DEBUG_VM + WARN_ON(!pmd_trans_huge(*pmdp)); + assert_spin_locked(&mm->page_table_lock); +#endif + + __asm__ __volatile__( + "1: ldarx %0,0,%3\n\ + and. %1,%0,%6\n\ + bne- 1b \n\ + andc %1,%0,%4 \n\ + or %1,%1,%7\n\ + stdcx. %1,0,%3 \n\ + bne- 1b" + : "=&r" (old_be), "=&r" (tmp), "=m" (*pmdp) + : "r" (pmdp), "r" (cpu_to_be64(clr)), "m" (*pmdp), + "r" (cpu_to_be64(H_PAGE_BUSY)), "r" (cpu_to_be64(set)) + : "cc" ); + + old = be64_to_cpu(old_be); + + trace_hugepage_update(addr, old, clr, set); + if (old & H_PAGE_HASHPTE) + hpte_do_hugepage_flush(mm, addr, pmdp, old); + return old; +} + +pmd_t hash__pmdp_collapse_flush(struct vm_area_struct *vma, unsigned long address, + pmd_t *pmdp) +{ + pmd_t pmd; + + VM_BUG_ON(address & ~HPAGE_PMD_MASK); + VM_BUG_ON(pmd_trans_huge(*pmdp)); + + pmd = *pmdp; + pmd_clear(pmdp); + /* + * Wait for all pending hash_page to finish. This is needed + * in case of subpage collapse. When we collapse normal pages + * to hugepage, we first clear the pmd, then invalidate all + * the PTE entries. The assumption here is that any low level + * page fault will see a none pmd and take the slow path that + * will wait on mmap_sem. But we could very well be in a + * hash_page with local ptep pointer value. Such a hash page + * can result in adding new HPTE entries for normal subpages. + * That means we could be modifying the page content as we + * copy them to a huge page. So wait for parallel hash_page + * to finish before invalidating HPTE entries. We can do this + * by sending an IPI to all the cpus and executing a dummy + * function there. + */ + kick_all_cpus_sync(); + /* + * Now invalidate the hpte entries in the range + * covered by pmd. This make sure we take a + * fault and will find the pmd as none, which will + * result in a major fault which takes mmap_sem and + * hence wait for collapse to complete. Without this + * the __collapse_huge_page_copy can result in copying + * the old content. + */ + flush_tlb_pmd_range(vma->vm_mm, &pmd, address); + return pmd; +} + +/* + * We want to put the pgtable in pmd and use pgtable for tracking + * the base page size hptes + */ +void hash__pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp, + pgtable_t pgtable) +{ + pgtable_t *pgtable_slot; + assert_spin_locked(&mm->page_table_lock); + /* + * we store the pgtable in the second half of PMD + */ + pgtable_slot = (pgtable_t *)pmdp + PTRS_PER_PMD; + *pgtable_slot = pgtable; + /* + * expose the deposited pgtable to other cpus. + * before we set the hugepage PTE at pmd level + * hash fault code looks at the deposted pgtable + * to store hash index values. + */ + smp_wmb(); +} + +pgtable_t hash__pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp) +{ + pgtable_t pgtable; + pgtable_t *pgtable_slot; + + assert_spin_locked(&mm->page_table_lock); + pgtable_slot = (pgtable_t *)pmdp + PTRS_PER_PMD; + pgtable = *pgtable_slot; + /* + * Once we withdraw, mark the entry NULL. + */ + *pgtable_slot = NULL; + /* + * We store HPTE information in the deposited PTE fragment. + * zero out the content on withdraw. + */ + memset(pgtable, 0, PTE_FRAG_SIZE); + return pgtable; +} + +void hash__pmdp_huge_split_prepare(struct vm_area_struct *vma, + unsigned long address, pmd_t *pmdp) +{ + VM_BUG_ON(address & ~HPAGE_PMD_MASK); + VM_BUG_ON(REGION_ID(address) != USER_REGION_ID); + + /* + * We can't mark the pmd none here, because that will cause a race + * against exit_mmap. We need to continue mark pmd TRANS HUGE, while + * we spilt, but at the same time we wan't rest of the ppc64 code + * not to insert hash pte on this, because we will be modifying + * the deposited pgtable in the caller of this function. Hence + * clear the _PAGE_USER so that we move the fault handling to + * higher level function and that will serialize against ptl. + * We need to flush existing hash pte entries here even though, + * the translation is still valid, because we will withdraw + * pgtable_t after this. + */ + pmd_hugepage_update(vma->vm_mm, address, pmdp, 0, _PAGE_PRIVILEGED); +} + +/* + * A linux hugepage PMD was changed and the corresponding hash table entries + * neesd to be flushed. + */ +void hpte_do_hugepage_flush(struct mm_struct *mm, unsigned long addr, + pmd_t *pmdp, unsigned long old_pmd) +{ + int ssize; + unsigned int psize; + unsigned long vsid; + unsigned long flags = 0; + const struct cpumask *tmp; + + /* get the base page size,vsid and segment size */ +#ifdef CONFIG_DEBUG_VM + psize = get_slice_psize(mm, addr); + BUG_ON(psize == MMU_PAGE_16M); +#endif + if (old_pmd & H_PAGE_COMBO) + psize = MMU_PAGE_4K; + else + psize = MMU_PAGE_64K; + + if (!is_kernel_addr(addr)) { + ssize = user_segment_size(addr); + vsid = get_vsid(mm->context.id, addr, ssize); + WARN_ON(vsid == 0); + } else { + vsid = get_kernel_vsid(addr, mmu_kernel_ssize); + ssize = mmu_kernel_ssize; + } + + tmp = cpumask_of(smp_processor_id()); + if (cpumask_equal(mm_cpumask(mm), tmp)) + flags |= HPTE_LOCAL_UPDATE; + + return flush_hash_hugepage(vsid, addr, pmdp, psize, ssize, flags); +} + +pmd_t hash__pmdp_huge_get_and_clear(struct mm_struct *mm, + unsigned long addr, pmd_t *pmdp) +{ + pmd_t old_pmd; + pgtable_t pgtable; + unsigned long old; + pgtable_t *pgtable_slot; + + old = pmd_hugepage_update(mm, addr, pmdp, ~0UL, 0); + old_pmd = __pmd(old); + /* + * We have pmd == none and we are holding page_table_lock. + * So we can safely go and clear the pgtable hash + * index info. + */ + pgtable_slot = (pgtable_t *)pmdp + PTRS_PER_PMD; + pgtable = *pgtable_slot; + /* + * Let's zero out old valid and hash index details + * hash fault look at them. + */ + memset(pgtable, 0, PTE_FRAG_SIZE); + /* + * Serialize against find_linux_pte_or_hugepte which does lock-less + * lookup in page tables with local interrupts disabled. For huge pages + * it casts pmd_t to pte_t. Since format of pte_t is different from + * pmd_t we want to prevent transit from pmd pointing to page table + * to pmd pointing to huge page (and back) while interrupts are disabled. + * We clear pmd to possibly replace it with page table pointer in + * different code paths. So make sure we wait for the parallel + * find_linux_pte_or_hugepage to finish. + */ + kick_all_cpus_sync(); + return old_pmd; +} + +int hash__has_transparent_hugepage(void) +{ + + if (!mmu_has_feature(MMU_FTR_16M_PAGE)) + return 0; + /* + * We support THP only if PMD_SIZE is 16MB. + */ + if (mmu_psize_defs[MMU_PAGE_16M].shift != PMD_SHIFT) + return 0; + /* + * We need to make sure that we support 16MB hugepage in a segement + * with base page size 64K or 4K. We only enable THP with a PAGE_SIZE + * of 64K. + */ + /* + * If we have 64K HPTE, we will be using that by default + */ + if (mmu_psize_defs[MMU_PAGE_64K].shift && + (mmu_psize_defs[MMU_PAGE_64K].penc[MMU_PAGE_16M] == -1)) + return 0; + /* + * Ok we only have 4K HPTE + */ + if (mmu_psize_defs[MMU_PAGE_4K].penc[MMU_PAGE_16M] == -1) + return 0; + + return 1; +} +#endif /* CONFIG_TRANSPARENT_HUGEPAGE */ diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c new file mode 100644 index 000000000000..18b2c11604fa --- /dev/null +++ b/arch/powerpc/mm/pgtable-radix.c @@ -0,0 +1,526 @@ +/* + * Page table handling routines for radix page table. + * + * Copyright 2015-2016, Aneesh Kumar K.V, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ +#include <linux/sched.h> +#include <linux/memblock.h> +#include <linux/of_fdt.h> + +#include <asm/pgtable.h> +#include <asm/pgalloc.h> +#include <asm/dma.h> +#include <asm/machdep.h> +#include <asm/mmu.h> +#include <asm/firmware.h> + +#include <trace/events/thp.h> + +static int native_update_partition_table(u64 patb1) +{ + partition_tb->patb1 = cpu_to_be64(patb1); + return 0; +} + +static __ref void *early_alloc_pgtable(unsigned long size) +{ + void *pt; + + pt = __va(memblock_alloc_base(size, size, MEMBLOCK_ALLOC_ANYWHERE)); + memset(pt, 0, size); + + return pt; +} + +int radix__map_kernel_page(unsigned long ea, unsigned long pa, + pgprot_t flags, + unsigned int map_page_size) +{ + pgd_t *pgdp; + pud_t *pudp; + pmd_t *pmdp; + pte_t *ptep; + /* + * Make sure task size is correct as per the max adddr + */ + BUILD_BUG_ON(TASK_SIZE_USER64 > RADIX_PGTABLE_RANGE); + if (slab_is_available()) { + pgdp = pgd_offset_k(ea); + pudp = pud_alloc(&init_mm, pgdp, ea); + if (!pudp) + return -ENOMEM; + if (map_page_size == PUD_SIZE) { + ptep = (pte_t *)pudp; + goto set_the_pte; + } + pmdp = pmd_alloc(&init_mm, pudp, ea); + if (!pmdp) + return -ENOMEM; + if (map_page_size == PMD_SIZE) { + ptep = (pte_t *)pudp; + goto set_the_pte; + } + ptep = pte_alloc_kernel(pmdp, ea); + if (!ptep) + return -ENOMEM; + } else { + pgdp = pgd_offset_k(ea); + if (pgd_none(*pgdp)) { + pudp = early_alloc_pgtable(PUD_TABLE_SIZE); + BUG_ON(pudp == NULL); + pgd_populate(&init_mm, pgdp, pudp); + } + pudp = pud_offset(pgdp, ea); + if (map_page_size == PUD_SIZE) { + ptep = (pte_t *)pudp; + goto set_the_pte; + } + if (pud_none(*pudp)) { + pmdp = early_alloc_pgtable(PMD_TABLE_SIZE); + BUG_ON(pmdp == NULL); + pud_populate(&init_mm, pudp, pmdp); + } + pmdp = pmd_offset(pudp, ea); + if (map_page_size == PMD_SIZE) { + ptep = (pte_t *)pudp; + goto set_the_pte; + } + if (!pmd_present(*pmdp)) { + ptep = early_alloc_pgtable(PAGE_SIZE); + BUG_ON(ptep == NULL); + pmd_populate_kernel(&init_mm, pmdp, ptep); + } + ptep = pte_offset_kernel(pmdp, ea); + } + +set_the_pte: + set_pte_at(&init_mm, ea, ptep, pfn_pte(pa >> PAGE_SHIFT, flags)); + smp_wmb(); + return 0; +} + +static void __init radix_init_pgtable(void) +{ + int loop_count; + u64 base, end, start_addr; + unsigned long rts_field; + struct memblock_region *reg; + unsigned long linear_page_size; + + /* We don't support slb for radix */ + mmu_slb_size = 0; + /* + * Create the linear mapping, using standard page size for now + */ + loop_count = 0; + for_each_memblock(memory, reg) { + + start_addr = reg->base; + +redo: + if (loop_count < 1 && mmu_psize_defs[MMU_PAGE_1G].shift) + linear_page_size = PUD_SIZE; + else if (loop_count < 2 && mmu_psize_defs[MMU_PAGE_2M].shift) + linear_page_size = PMD_SIZE; + else + linear_page_size = PAGE_SIZE; + + base = _ALIGN_UP(start_addr, linear_page_size); + end = _ALIGN_DOWN(reg->base + reg->size, linear_page_size); + + pr_info("Mapping range 0x%lx - 0x%lx with 0x%lx\n", + (unsigned long)base, (unsigned long)end, + linear_page_size); + + while (base < end) { + radix__map_kernel_page((unsigned long)__va(base), + base, PAGE_KERNEL_X, + linear_page_size); + base += linear_page_size; + } + /* + * map the rest using lower page size + */ + if (end < reg->base + reg->size) { + start_addr = end; + loop_count++; + goto redo; + } + } + /* + * Allocate Partition table and process table for the + * host. + */ + BUILD_BUG_ON_MSG((PRTB_SIZE_SHIFT > 23), "Process table size too large."); + process_tb = early_alloc_pgtable(1UL << PRTB_SIZE_SHIFT); + /* + * Fill in the process table. + * we support 52 bits, hence 52-28 = 24, 11000 + */ + rts_field = 3ull << PPC_BITLSHIFT(2); + process_tb->prtb0 = cpu_to_be64(rts_field | __pa(init_mm.pgd) | RADIX_PGD_INDEX_SIZE); + /* + * Fill in the partition table. We are suppose to use effective address + * of process table here. But our linear mapping also enable us to use + * physical address here. + */ + ppc_md.update_partition_table(__pa(process_tb) | (PRTB_SIZE_SHIFT - 12) | PATB_GR); + pr_info("Process table %p and radix root for kernel: %p\n", process_tb, init_mm.pgd); +} + +static void __init radix_init_partition_table(void) +{ + unsigned long rts_field; + /* + * we support 52 bits, hence 52-28 = 24, 11000 + */ + rts_field = 3ull << PPC_BITLSHIFT(2); + + BUILD_BUG_ON_MSG((PATB_SIZE_SHIFT > 24), "Partition table size too large."); + partition_tb = early_alloc_pgtable(1UL << PATB_SIZE_SHIFT); + partition_tb->patb0 = cpu_to_be64(rts_field | __pa(init_mm.pgd) | + RADIX_PGD_INDEX_SIZE | PATB_HR); + printk("Partition table %p\n", partition_tb); + + memblock_set_current_limit(MEMBLOCK_ALLOC_ANYWHERE); + /* + * update partition table control register, + * 64 K size. + */ + mtspr(SPRN_PTCR, __pa(partition_tb) | (PATB_SIZE_SHIFT - 12)); +} + +void __init radix_init_native(void) +{ + ppc_md.update_partition_table = native_update_partition_table; +} + +static int __init get_idx_from_shift(unsigned int shift) +{ + int idx = -1; + + switch (shift) { + case 0xc: + idx = MMU_PAGE_4K; + break; + case 0x10: + idx = MMU_PAGE_64K; + break; + case 0x15: + idx = MMU_PAGE_2M; + break; + case 0x1e: + idx = MMU_PAGE_1G; + break; + } + return idx; +} + +static int __init radix_dt_scan_page_sizes(unsigned long node, + const char *uname, int depth, + void *data) +{ + int size = 0; + int shift, idx; + unsigned int ap; + const __be32 *prop; + const char *type = of_get_flat_dt_prop(node, "device_type", NULL); + + /* We are scanning "cpu" nodes only */ + if (type == NULL || strcmp(type, "cpu") != 0) + return 0; + + prop = of_get_flat_dt_prop(node, "ibm,processor-radix-AP-encodings", &size); + if (!prop) + return 0; + + pr_info("Page sizes from device-tree:\n"); + for (; size >= 4; size -= 4, ++prop) { + + struct mmu_psize_def *def; + + /* top 3 bit is AP encoding */ + shift = be32_to_cpu(prop[0]) & ~(0xe << 28); + ap = be32_to_cpu(prop[0]) >> 29; + pr_info("Page size sift = %d AP=0x%x\n", shift, ap); + + idx = get_idx_from_shift(shift); + if (idx < 0) + continue; + + def = &mmu_psize_defs[idx]; + def->shift = shift; + def->ap = ap; + } + + /* needed ? */ + cur_cpu_spec->mmu_features &= ~MMU_FTR_NO_SLBIE_B; + return 1; +} + +static void __init radix_init_page_sizes(void) +{ + int rc; + + /* + * Try to find the available page sizes in the device-tree + */ + rc = of_scan_flat_dt(radix_dt_scan_page_sizes, NULL); + if (rc != 0) /* Found */ + goto found; + /* + * let's assume we have page 4k and 64k support + */ + mmu_psize_defs[MMU_PAGE_4K].shift = 12; + mmu_psize_defs[MMU_PAGE_4K].ap = 0x0; + + mmu_psize_defs[MMU_PAGE_64K].shift = 16; + mmu_psize_defs[MMU_PAGE_64K].ap = 0x5; +found: +#ifdef CONFIG_SPARSEMEM_VMEMMAP + if (mmu_psize_defs[MMU_PAGE_2M].shift) { + /* + * map vmemmap using 2M if available + */ + mmu_vmemmap_psize = MMU_PAGE_2M; + } +#endif /* CONFIG_SPARSEMEM_VMEMMAP */ + return; +} + +void __init radix__early_init_mmu(void) +{ + unsigned long lpcr; + /* + * setup LPCR UPRT based on mmu_features + */ + lpcr = mfspr(SPRN_LPCR); + mtspr(SPRN_LPCR, lpcr | LPCR_UPRT); + +#ifdef CONFIG_PPC_64K_PAGES + /* PAGE_SIZE mappings */ + mmu_virtual_psize = MMU_PAGE_64K; +#else + mmu_virtual_psize = MMU_PAGE_4K; +#endif + +#ifdef CONFIG_SPARSEMEM_VMEMMAP + /* vmemmap mapping */ + mmu_vmemmap_psize = mmu_virtual_psize; +#endif + /* + * initialize page table size + */ + __pte_index_size = RADIX_PTE_INDEX_SIZE; + __pmd_index_size = RADIX_PMD_INDEX_SIZE; + __pud_index_size = RADIX_PUD_INDEX_SIZE; + __pgd_index_size = RADIX_PGD_INDEX_SIZE; + __pmd_cache_index = RADIX_PMD_INDEX_SIZE; + __pte_table_size = RADIX_PTE_TABLE_SIZE; + __pmd_table_size = RADIX_PMD_TABLE_SIZE; + __pud_table_size = RADIX_PUD_TABLE_SIZE; + __pgd_table_size = RADIX_PGD_TABLE_SIZE; + + __pmd_val_bits = RADIX_PMD_VAL_BITS; + __pud_val_bits = RADIX_PUD_VAL_BITS; + __pgd_val_bits = RADIX_PGD_VAL_BITS; + + __kernel_virt_start = RADIX_KERN_VIRT_START; + __kernel_virt_size = RADIX_KERN_VIRT_SIZE; + __vmalloc_start = RADIX_VMALLOC_START; + __vmalloc_end = RADIX_VMALLOC_END; + vmemmap = (struct page *)RADIX_VMEMMAP_BASE; + ioremap_bot = IOREMAP_BASE; + /* + * For now radix also use the same frag size + */ + __pte_frag_nr = H_PTE_FRAG_NR; + __pte_frag_size_shift = H_PTE_FRAG_SIZE_SHIFT; + + radix_init_page_sizes(); + if (!firmware_has_feature(FW_FEATURE_LPAR)) + radix_init_partition_table(); + + radix_init_pgtable(); +} + +void radix__early_init_mmu_secondary(void) +{ + unsigned long lpcr; + /* + * setup LPCR UPRT based on mmu_features + */ + lpcr = mfspr(SPRN_LPCR); + mtspr(SPRN_LPCR, lpcr | LPCR_UPRT); + /* + * update partition table control register, 64 K size. + */ + if (!firmware_has_feature(FW_FEATURE_LPAR)) + mtspr(SPRN_PTCR, + __pa(partition_tb) | (PATB_SIZE_SHIFT - 12)); +} + +void radix__setup_initial_memory_limit(phys_addr_t first_memblock_base, + phys_addr_t first_memblock_size) +{ + /* We don't currently support the first MEMBLOCK not mapping 0 + * physical on those processors + */ + BUG_ON(first_memblock_base != 0); + /* + * We limit the allocation that depend on ppc64_rma_size + * to first_memblock_size. We also clamp it to 1GB to + * avoid some funky things such as RTAS bugs. + * + * On radix config we really don't have a limitation + * on real mode access. But keeping it as above works + * well enough. + */ + ppc64_rma_size = min_t(u64, first_memblock_size, 0x40000000); + /* + * Finally limit subsequent allocations. We really don't want + * to limit the memblock allocations to rma_size. FIXME!! should + * we even limit at all ? + */ + memblock_set_current_limit(first_memblock_base + first_memblock_size); +} + +#ifdef CONFIG_SPARSEMEM_VMEMMAP +int __meminit radix__vmemmap_create_mapping(unsigned long start, + unsigned long page_size, + unsigned long phys) +{ + /* Create a PTE encoding */ + unsigned long flags = _PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_KERNEL_RW; + + BUG_ON(radix__map_kernel_page(start, phys, __pgprot(flags), page_size)); + return 0; +} + +#ifdef CONFIG_MEMORY_HOTPLUG +void radix__vmemmap_remove_mapping(unsigned long start, unsigned long page_size) +{ + /* FIXME!! intel does more. We should free page tables mapping vmemmap ? */ +} +#endif +#endif + +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + +unsigned long radix__pmd_hugepage_update(struct mm_struct *mm, unsigned long addr, + pmd_t *pmdp, unsigned long clr, + unsigned long set) +{ + unsigned long old; + +#ifdef CONFIG_DEBUG_VM + WARN_ON(!radix__pmd_trans_huge(*pmdp)); + assert_spin_locked(&mm->page_table_lock); +#endif + + old = radix__pte_update(mm, addr, (pte_t *)pmdp, clr, set, 1); + trace_hugepage_update(addr, old, clr, set); + + return old; +} + +pmd_t radix__pmdp_collapse_flush(struct vm_area_struct *vma, unsigned long address, + pmd_t *pmdp) + +{ + pmd_t pmd; + + VM_BUG_ON(address & ~HPAGE_PMD_MASK); + VM_BUG_ON(radix__pmd_trans_huge(*pmdp)); + /* + * khugepaged calls this for normal pmd + */ + pmd = *pmdp; + pmd_clear(pmdp); + /*FIXME!! Verify whether we need this kick below */ + kick_all_cpus_sync(); + flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE); + return pmd; +} + +/* + * For us pgtable_t is pte_t *. Inorder to save the deposisted + * page table, we consider the allocated page table as a list + * head. On withdraw we need to make sure we zero out the used + * list_head memory area. + */ +void radix__pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp, + pgtable_t pgtable) +{ + struct list_head *lh = (struct list_head *) pgtable; + + assert_spin_locked(pmd_lockptr(mm, pmdp)); + + /* FIFO */ + if (!pmd_huge_pte(mm, pmdp)) + INIT_LIST_HEAD(lh); + else + list_add(lh, (struct list_head *) pmd_huge_pte(mm, pmdp)); + pmd_huge_pte(mm, pmdp) = pgtable; +} + +pgtable_t radix__pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp) +{ + pte_t *ptep; + pgtable_t pgtable; + struct list_head *lh; + + assert_spin_locked(pmd_lockptr(mm, pmdp)); + + /* FIFO */ + pgtable = pmd_huge_pte(mm, pmdp); + lh = (struct list_head *) pgtable; + if (list_empty(lh)) + pmd_huge_pte(mm, pmdp) = NULL; + else { + pmd_huge_pte(mm, pmdp) = (pgtable_t) lh->next; + list_del(lh); + } + ptep = (pte_t *) pgtable; + *ptep = __pte(0); + ptep++; + *ptep = __pte(0); + return pgtable; +} + + +pmd_t radix__pmdp_huge_get_and_clear(struct mm_struct *mm, + unsigned long addr, pmd_t *pmdp) +{ + pmd_t old_pmd; + unsigned long old; + + old = radix__pmd_hugepage_update(mm, addr, pmdp, ~0UL, 0); + old_pmd = __pmd(old); + /* + * Serialize against find_linux_pte_or_hugepte which does lock-less + * lookup in page tables with local interrupts disabled. For huge pages + * it casts pmd_t to pte_t. Since format of pte_t is different from + * pmd_t we want to prevent transit from pmd pointing to page table + * to pmd pointing to huge page (and back) while interrupts are disabled. + * We clear pmd to possibly replace it with page table pointer in + * different code paths. So make sure we wait for the parallel + * find_linux_pte_or_hugepage to finish. + */ + kick_all_cpus_sync(); + return old_pmd; +} + +int radix__has_transparent_hugepage(void) +{ + /* For radix 2M at PMD level means thp */ + if (mmu_psize_defs[MMU_PAGE_2M].shift == PMD_SHIFT) + return 1; + return 0; +} +#endif /* CONFIG_TRANSPARENT_HUGEPAGE */ diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c index de37ff445362..88a307504b5a 100644 --- a/arch/powerpc/mm/pgtable.c +++ b/arch/powerpc/mm/pgtable.c @@ -38,14 +38,25 @@ static inline int is_exec_fault(void) /* We only try to do i/d cache coherency on stuff that looks like * reasonably "normal" PTEs. We currently require a PTE to be present - * and we avoid _PAGE_SPECIAL and _PAGE_NO_CACHE. We also only do that + * and we avoid _PAGE_SPECIAL and cache inhibited pte. We also only do that * on userspace PTEs */ static inline int pte_looks_normal(pte_t pte) { + +#if defined(CONFIG_PPC_BOOK3S_64) + if ((pte_val(pte) & (_PAGE_PRESENT | _PAGE_SPECIAL)) == _PAGE_PRESENT) { + if (pte_ci(pte)) + return 0; + if (pte_user(pte)) + return 1; + } + return 0; +#else return (pte_val(pte) & - (_PAGE_PRESENT | _PAGE_SPECIAL | _PAGE_NO_CACHE | _PAGE_USER)) == - (_PAGE_PRESENT | _PAGE_USER); + (_PAGE_PRESENT | _PAGE_SPECIAL | _PAGE_NO_CACHE | _PAGE_USER)) == + (_PAGE_PRESENT | _PAGE_USER); +#endif } static struct page *maybe_pte_to_page(pte_t pte) @@ -71,6 +82,9 @@ static struct page *maybe_pte_to_page(pte_t pte) static pte_t set_pte_filter(pte_t pte) { + if (radix_enabled()) + return pte; + pte = __pte(pte_val(pte) & ~_PAGE_HPTEFLAGS); if (pte_looks_normal(pte) && !(cpu_has_feature(CPU_FTR_COHERENT_ICACHE) || cpu_has_feature(CPU_FTR_NOEXECUTE))) { @@ -177,8 +191,8 @@ void set_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, * _PAGE_PRESENT, but we can be sure that it is not in hpte. * Hence we can use set_pte_at for them. */ - VM_WARN_ON((pte_val(*ptep) & (_PAGE_PRESENT | _PAGE_USER)) == - (_PAGE_PRESENT | _PAGE_USER)); + VM_WARN_ON(pte_present(*ptep) && !pte_protnone(*ptep)); + /* * Add the pte bit when tryint set a pte */ diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c index 347106080bb1..e009e0604a8a 100644 --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c @@ -55,104 +55,63 @@ #include "mmu_decl.h" -#define CREATE_TRACE_POINTS -#include <trace/events/thp.h> - -/* Some sanity checking */ -#if TASK_SIZE_USER64 > PGTABLE_RANGE -#error TASK_SIZE_USER64 exceeds pagetable range -#endif - #ifdef CONFIG_PPC_STD_MMU_64 #if TASK_SIZE_USER64 > (1UL << (ESID_BITS + SID_SHIFT)) #error TASK_SIZE_USER64 exceeds user VSID range #endif #endif -unsigned long ioremap_bot = IOREMAP_BASE; - -#ifdef CONFIG_PPC_MMU_NOHASH -static __ref void *early_alloc_pgtable(unsigned long size) -{ - void *pt; - - pt = __va(memblock_alloc_base(size, size, __pa(MAX_DMA_ADDRESS))); - memset(pt, 0, size); - - return pt; -} -#endif /* CONFIG_PPC_MMU_NOHASH */ - +#ifdef CONFIG_PPC_BOOK3S_64 /* - * map_kernel_page currently only called by __ioremap - * map_kernel_page adds an entry to the ioremap page table - * and adds an entry to the HPT, possibly bolting it + * partition table and process table for ISA 3.0 */ -int map_kernel_page(unsigned long ea, unsigned long pa, unsigned long flags) -{ - pgd_t *pgdp; - pud_t *pudp; - pmd_t *pmdp; - pte_t *ptep; - - if (slab_is_available()) { - pgdp = pgd_offset_k(ea); - pudp = pud_alloc(&init_mm, pgdp, ea); - if (!pudp) - return -ENOMEM; - pmdp = pmd_alloc(&init_mm, pudp, ea); - if (!pmdp) - return -ENOMEM; - ptep = pte_alloc_kernel(pmdp, ea); - if (!ptep) - return -ENOMEM; - set_pte_at(&init_mm, ea, ptep, pfn_pte(pa >> PAGE_SHIFT, - __pgprot(flags))); - } else { -#ifdef CONFIG_PPC_MMU_NOHASH - pgdp = pgd_offset_k(ea); -#ifdef PUD_TABLE_SIZE - if (pgd_none(*pgdp)) { - pudp = early_alloc_pgtable(PUD_TABLE_SIZE); - BUG_ON(pudp == NULL); - pgd_populate(&init_mm, pgdp, pudp); - } -#endif /* PUD_TABLE_SIZE */ - pudp = pud_offset(pgdp, ea); - if (pud_none(*pudp)) { - pmdp = early_alloc_pgtable(PMD_TABLE_SIZE); - BUG_ON(pmdp == NULL); - pud_populate(&init_mm, pudp, pmdp); - } - pmdp = pmd_offset(pudp, ea); - if (!pmd_present(*pmdp)) { - ptep = early_alloc_pgtable(PAGE_SIZE); - BUG_ON(ptep == NULL); - pmd_populate_kernel(&init_mm, pmdp, ptep); - } - ptep = pte_offset_kernel(pmdp, ea); - set_pte_at(&init_mm, ea, ptep, pfn_pte(pa >> PAGE_SHIFT, - __pgprot(flags))); -#else /* CONFIG_PPC_MMU_NOHASH */ - /* - * If the mm subsystem is not fully up, we cannot create a - * linux page table entry for this mapping. Simply bolt an - * entry in the hardware page table. - * - */ - if (htab_bolt_mapping(ea, ea + PAGE_SIZE, pa, flags, - mmu_io_psize, mmu_kernel_ssize)) { - printk(KERN_ERR "Failed to do bolted mapping IO " - "memory at %016lx !\n", pa); - return -ENOMEM; - } -#endif /* !CONFIG_PPC_MMU_NOHASH */ - } - - smp_wmb(); - return 0; -} - +struct prtb_entry *process_tb; +struct patb_entry *partition_tb; +/* + * page table size + */ +unsigned long __pte_index_size; +EXPORT_SYMBOL(__pte_index_size); +unsigned long __pmd_index_size; +EXPORT_SYMBOL(__pmd_index_size); +unsigned long __pud_index_size; +EXPORT_SYMBOL(__pud_index_size); +unsigned long __pgd_index_size; +EXPORT_SYMBOL(__pgd_index_size); +unsigned long __pmd_cache_index; +EXPORT_SYMBOL(__pmd_cache_index); +unsigned long __pte_table_size; +EXPORT_SYMBOL(__pte_table_size); +unsigned long __pmd_table_size; +EXPORT_SYMBOL(__pmd_table_size); +unsigned long __pud_table_size; +EXPORT_SYMBOL(__pud_table_size); +unsigned long __pgd_table_size; +EXPORT_SYMBOL(__pgd_table_size); +unsigned long __pmd_val_bits; +EXPORT_SYMBOL(__pmd_val_bits); +unsigned long __pud_val_bits; +EXPORT_SYMBOL(__pud_val_bits); +unsigned long __pgd_val_bits; +EXPORT_SYMBOL(__pgd_val_bits); +unsigned long __kernel_virt_start; +EXPORT_SYMBOL(__kernel_virt_start); +unsigned long __kernel_virt_size; +EXPORT_SYMBOL(__kernel_virt_size); +unsigned long __vmalloc_start; +EXPORT_SYMBOL(__vmalloc_start); +unsigned long __vmalloc_end; +EXPORT_SYMBOL(__vmalloc_end); +struct page *vmemmap; +EXPORT_SYMBOL(vmemmap); +unsigned long __pte_frag_nr; +EXPORT_SYMBOL(__pte_frag_nr); +unsigned long __pte_frag_size_shift; +EXPORT_SYMBOL(__pte_frag_size_shift); +unsigned long ioremap_bot; +#else /* !CONFIG_PPC_BOOK3S_64 */ +unsigned long ioremap_bot = IOREMAP_BASE; +#endif /** * __ioremap_at - Low level function to establish the page tables @@ -167,12 +126,8 @@ void __iomem * __ioremap_at(phys_addr_t pa, void *ea, unsigned long size, if ((flags & _PAGE_PRESENT) == 0) flags |= pgprot_val(PAGE_KERNEL); - /* Non-cacheable page cannot be coherent */ - if (flags & _PAGE_NO_CACHE) - flags &= ~_PAGE_COHERENT; - /* We don't support the 4K PFN hack with ioremap */ - if (flags & _PAGE_4K_PFN) + if (flags & H_PAGE_4K_PFN) return NULL; WARN_ON(pa & ~PAGE_MASK); @@ -253,7 +208,7 @@ void __iomem * __ioremap(phys_addr_t addr, unsigned long size, void __iomem * ioremap(phys_addr_t addr, unsigned long size) { - unsigned long flags = _PAGE_NO_CACHE | _PAGE_GUARDED; + unsigned long flags = pgprot_val(pgprot_noncached(__pgprot(0))); void *caller = __builtin_return_address(0); if (ppc_md.ioremap) @@ -263,7 +218,7 @@ void __iomem * ioremap(phys_addr_t addr, unsigned long size) void __iomem * ioremap_wc(phys_addr_t addr, unsigned long size) { - unsigned long flags = _PAGE_NO_CACHE; + unsigned long flags = pgprot_val(pgprot_noncached_wc(__pgprot(0))); void *caller = __builtin_return_address(0); if (ppc_md.ioremap) @@ -277,11 +232,20 @@ void __iomem * ioremap_prot(phys_addr_t addr, unsigned long size, void *caller = __builtin_return_address(0); /* writeable implies dirty for kernel addresses */ - if (flags & _PAGE_RW) + if (flags & _PAGE_WRITE) flags |= _PAGE_DIRTY; - /* we don't want to let _PAGE_USER and _PAGE_EXEC leak out */ - flags &= ~(_PAGE_USER | _PAGE_EXEC); + /* we don't want to let _PAGE_EXEC leak out */ + flags &= ~_PAGE_EXEC; + /* + * Force kernel mapping. + */ +#if defined(CONFIG_PPC_BOOK3S_64) + flags |= _PAGE_PRIVILEGED; +#else + flags &= ~_PAGE_USER; +#endif + #ifdef _PAGE_BAP_SR /* _PAGE_USER contains _PAGE_BAP_SR on BookE using the new PTE format @@ -411,7 +375,7 @@ static pte_t *__alloc_for_cache(struct mm_struct *mm, int kernel) return (pte_t *)ret; } -pte_t *page_table_alloc(struct mm_struct *mm, unsigned long vmaddr, int kernel) +pte_t *pte_fragment_alloc(struct mm_struct *mm, unsigned long vmaddr, int kernel) { pte_t *pte; @@ -421,8 +385,9 @@ pte_t *page_table_alloc(struct mm_struct *mm, unsigned long vmaddr, int kernel) return __alloc_for_cache(mm, kernel); } +#endif /* CONFIG_PPC_64K_PAGES */ -void page_table_free(struct mm_struct *mm, unsigned long *table, int kernel) +void pte_fragment_free(unsigned long *table, int kernel) { struct page *page = virt_to_page(table); if (put_page_testzero(page)) { @@ -433,15 +398,6 @@ void page_table_free(struct mm_struct *mm, unsigned long *table, int kernel) } #ifdef CONFIG_SMP -static void page_table_free_rcu(void *table) -{ - struct page *page = virt_to_page(table); - if (put_page_testzero(page)) { - pgtable_page_dtor(page); - free_hot_cold_page(page, 0); - } -} - void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int shift) { unsigned long pgf = (unsigned long)table; @@ -458,7 +414,7 @@ void __tlb_remove_table(void *_table) if (!shift) /* PTE page needs special handling */ - page_table_free_rcu(table); + pte_fragment_free(table, 0); else { BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE); kmem_cache_free(PGT_CACHE(shift), table); @@ -469,385 +425,10 @@ void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int shift) { if (!shift) { /* PTE page needs special handling */ - struct page *page = virt_to_page(table); - if (put_page_testzero(page)) { - pgtable_page_dtor(page); - free_hot_cold_page(page, 0); - } + pte_fragment_free(table, 0); } else { BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE); kmem_cache_free(PGT_CACHE(shift), table); } } #endif -#endif /* CONFIG_PPC_64K_PAGES */ - -#ifdef CONFIG_TRANSPARENT_HUGEPAGE - -/* - * This is called when relaxing access to a hugepage. It's also called in the page - * fault path when we don't hit any of the major fault cases, ie, a minor - * update of _PAGE_ACCESSED, _PAGE_DIRTY, etc... The generic code will have - * handled those two for us, we additionally deal with missing execute - * permission here on some processors - */ -int pmdp_set_access_flags(struct vm_area_struct *vma, unsigned long address, - pmd_t *pmdp, pmd_t entry, int dirty) -{ - int changed; -#ifdef CONFIG_DEBUG_VM - WARN_ON(!pmd_trans_huge(*pmdp)); - assert_spin_locked(&vma->vm_mm->page_table_lock); -#endif - changed = !pmd_same(*(pmdp), entry); - if (changed) { - __ptep_set_access_flags(pmdp_ptep(pmdp), pmd_pte(entry)); - /* - * Since we are not supporting SW TLB systems, we don't - * have any thing similar to flush_tlb_page_nohash() - */ - } - return changed; -} - -unsigned long pmd_hugepage_update(struct mm_struct *mm, unsigned long addr, - pmd_t *pmdp, unsigned long clr, - unsigned long set) -{ - - unsigned long old, tmp; - -#ifdef CONFIG_DEBUG_VM - WARN_ON(!pmd_trans_huge(*pmdp)); - assert_spin_locked(&mm->page_table_lock); -#endif - -#ifdef PTE_ATOMIC_UPDATES - __asm__ __volatile__( - "1: ldarx %0,0,%3\n\ - andi. %1,%0,%6\n\ - bne- 1b \n\ - andc %1,%0,%4 \n\ - or %1,%1,%7\n\ - stdcx. %1,0,%3 \n\ - bne- 1b" - : "=&r" (old), "=&r" (tmp), "=m" (*pmdp) - : "r" (pmdp), "r" (clr), "m" (*pmdp), "i" (_PAGE_BUSY), "r" (set) - : "cc" ); -#else - old = pmd_val(*pmdp); - *pmdp = __pmd((old & ~clr) | set); -#endif - trace_hugepage_update(addr, old, clr, set); - if (old & _PAGE_HASHPTE) - hpte_do_hugepage_flush(mm, addr, pmdp, old); - return old; -} - -pmd_t pmdp_collapse_flush(struct vm_area_struct *vma, unsigned long address, - pmd_t *pmdp) -{ - pmd_t pmd; - - VM_BUG_ON(address & ~HPAGE_PMD_MASK); - VM_BUG_ON(pmd_trans_huge(*pmdp)); - - pmd = *pmdp; - pmd_clear(pmdp); - /* - * Wait for all pending hash_page to finish. This is needed - * in case of subpage collapse. When we collapse normal pages - * to hugepage, we first clear the pmd, then invalidate all - * the PTE entries. The assumption here is that any low level - * page fault will see a none pmd and take the slow path that - * will wait on mmap_sem. But we could very well be in a - * hash_page with local ptep pointer value. Such a hash page - * can result in adding new HPTE entries for normal subpages. - * That means we could be modifying the page content as we - * copy them to a huge page. So wait for parallel hash_page - * to finish before invalidating HPTE entries. We can do this - * by sending an IPI to all the cpus and executing a dummy - * function there. - */ - kick_all_cpus_sync(); - /* - * Now invalidate the hpte entries in the range - * covered by pmd. This make sure we take a - * fault and will find the pmd as none, which will - * result in a major fault which takes mmap_sem and - * hence wait for collapse to complete. Without this - * the __collapse_huge_page_copy can result in copying - * the old content. - */ - flush_tlb_pmd_range(vma->vm_mm, &pmd, address); - return pmd; -} - -int pmdp_test_and_clear_young(struct vm_area_struct *vma, - unsigned long address, pmd_t *pmdp) -{ - return __pmdp_test_and_clear_young(vma->vm_mm, address, pmdp); -} - -/* - * We currently remove entries from the hashtable regardless of whether - * the entry was young or dirty. The generic routines only flush if the - * entry was young or dirty which is not good enough. - * - * We should be more intelligent about this but for the moment we override - * these functions and force a tlb flush unconditionally - */ -int pmdp_clear_flush_young(struct vm_area_struct *vma, - unsigned long address, pmd_t *pmdp) -{ - return __pmdp_test_and_clear_young(vma->vm_mm, address, pmdp); -} - -/* - * We want to put the pgtable in pmd and use pgtable for tracking - * the base page size hptes - */ -void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp, - pgtable_t pgtable) -{ - pgtable_t *pgtable_slot; - assert_spin_locked(&mm->page_table_lock); - /* - * we store the pgtable in the second half of PMD - */ - pgtable_slot = (pgtable_t *)pmdp + PTRS_PER_PMD; - *pgtable_slot = pgtable; - /* - * expose the deposited pgtable to other cpus. - * before we set the hugepage PTE at pmd level - * hash fault code looks at the deposted pgtable - * to store hash index values. - */ - smp_wmb(); -} - -pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp) -{ - pgtable_t pgtable; - pgtable_t *pgtable_slot; - - assert_spin_locked(&mm->page_table_lock); - pgtable_slot = (pgtable_t *)pmdp + PTRS_PER_PMD; - pgtable = *pgtable_slot; - /* - * Once we withdraw, mark the entry NULL. - */ - *pgtable_slot = NULL; - /* - * We store HPTE information in the deposited PTE fragment. - * zero out the content on withdraw. - */ - memset(pgtable, 0, PTE_FRAG_SIZE); - return pgtable; -} - -void pmdp_huge_split_prepare(struct vm_area_struct *vma, - unsigned long address, pmd_t *pmdp) -{ - VM_BUG_ON(address & ~HPAGE_PMD_MASK); - VM_BUG_ON(REGION_ID(address) != USER_REGION_ID); - - /* - * We can't mark the pmd none here, because that will cause a race - * against exit_mmap. We need to continue mark pmd TRANS HUGE, while - * we spilt, but at the same time we wan't rest of the ppc64 code - * not to insert hash pte on this, because we will be modifying - * the deposited pgtable in the caller of this function. Hence - * clear the _PAGE_USER so that we move the fault handling to - * higher level function and that will serialize against ptl. - * We need to flush existing hash pte entries here even though, - * the translation is still valid, because we will withdraw - * pgtable_t after this. - */ - pmd_hugepage_update(vma->vm_mm, address, pmdp, _PAGE_USER, 0); -} - - -/* - * set a new huge pmd. We should not be called for updating - * an existing pmd entry. That should go via pmd_hugepage_update. - */ -void set_pmd_at(struct mm_struct *mm, unsigned long addr, - pmd_t *pmdp, pmd_t pmd) -{ -#ifdef CONFIG_DEBUG_VM - WARN_ON((pmd_val(*pmdp) & (_PAGE_PRESENT | _PAGE_USER)) == - (_PAGE_PRESENT | _PAGE_USER)); - assert_spin_locked(&mm->page_table_lock); - WARN_ON(!pmd_trans_huge(pmd)); -#endif - trace_hugepage_set_pmd(addr, pmd_val(pmd)); - return set_pte_at(mm, addr, pmdp_ptep(pmdp), pmd_pte(pmd)); -} - -/* - * We use this to invalidate a pmdp entry before switching from a - * hugepte to regular pmd entry. - */ -void pmdp_invalidate(struct vm_area_struct *vma, unsigned long address, - pmd_t *pmdp) -{ - pmd_hugepage_update(vma->vm_mm, address, pmdp, _PAGE_PRESENT, 0); - - /* - * This ensures that generic code that rely on IRQ disabling - * to prevent a parallel THP split work as expected. - */ - kick_all_cpus_sync(); -} - -/* - * A linux hugepage PMD was changed and the corresponding hash table entries - * neesd to be flushed. - */ -void hpte_do_hugepage_flush(struct mm_struct *mm, unsigned long addr, - pmd_t *pmdp, unsigned long old_pmd) -{ - int ssize; - unsigned int psize; - unsigned long vsid; - unsigned long flags = 0; - const struct cpumask *tmp; - - /* get the base page size,vsid and segment size */ -#ifdef CONFIG_DEBUG_VM - psize = get_slice_psize(mm, addr); - BUG_ON(psize == MMU_PAGE_16M); -#endif - if (old_pmd & _PAGE_COMBO) - psize = MMU_PAGE_4K; - else - psize = MMU_PAGE_64K; - - if (!is_kernel_addr(addr)) { - ssize = user_segment_size(addr); - vsid = get_vsid(mm->context.id, addr, ssize); - WARN_ON(vsid == 0); - } else { - vsid = get_kernel_vsid(addr, mmu_kernel_ssize); - ssize = mmu_kernel_ssize; - } - - tmp = cpumask_of(smp_processor_id()); - if (cpumask_equal(mm_cpumask(mm), tmp)) - flags |= HPTE_LOCAL_UPDATE; - - return flush_hash_hugepage(vsid, addr, pmdp, psize, ssize, flags); -} - -static pmd_t pmd_set_protbits(pmd_t pmd, pgprot_t pgprot) -{ - return __pmd(pmd_val(pmd) | pgprot_val(pgprot)); -} - -pmd_t pfn_pmd(unsigned long pfn, pgprot_t pgprot) -{ - unsigned long pmdv; - - pmdv = (pfn << PTE_RPN_SHIFT) & PTE_RPN_MASK; - return pmd_set_protbits(__pmd(pmdv), pgprot); -} - -pmd_t mk_pmd(struct page *page, pgprot_t pgprot) -{ - return pfn_pmd(page_to_pfn(page), pgprot); -} - -pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot) -{ - unsigned long pmdv; - - pmdv = pmd_val(pmd); - pmdv &= _HPAGE_CHG_MASK; - return pmd_set_protbits(__pmd(pmdv), newprot); -} - -/* - * This is called at the end of handling a user page fault, when the - * fault has been handled by updating a HUGE PMD entry in the linux page tables. - * We use it to preload an HPTE into the hash table corresponding to - * the updated linux HUGE PMD entry. - */ -void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr, - pmd_t *pmd) -{ - return; -} - -pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm, - unsigned long addr, pmd_t *pmdp) -{ - pmd_t old_pmd; - pgtable_t pgtable; - unsigned long old; - pgtable_t *pgtable_slot; - - old = pmd_hugepage_update(mm, addr, pmdp, ~0UL, 0); - old_pmd = __pmd(old); - /* - * We have pmd == none and we are holding page_table_lock. - * So we can safely go and clear the pgtable hash - * index info. - */ - pgtable_slot = (pgtable_t *)pmdp + PTRS_PER_PMD; - pgtable = *pgtable_slot; - /* - * Let's zero out old valid and hash index details - * hash fault look at them. - */ - memset(pgtable, 0, PTE_FRAG_SIZE); - /* - * Serialize against find_linux_pte_or_hugepte which does lock-less - * lookup in page tables with local interrupts disabled. For huge pages - * it casts pmd_t to pte_t. Since format of pte_t is different from - * pmd_t we want to prevent transit from pmd pointing to page table - * to pmd pointing to huge page (and back) while interrupts are disabled. - * We clear pmd to possibly replace it with page table pointer in - * different code paths. So make sure we wait for the parallel - * find_linux_pte_or_hugepage to finish. - */ - kick_all_cpus_sync(); - return old_pmd; -} - -int has_transparent_hugepage(void) -{ - - BUILD_BUG_ON_MSG((PMD_SHIFT - PAGE_SHIFT) >= MAX_ORDER, - "hugepages can't be allocated by the buddy allocator"); - - BUILD_BUG_ON_MSG((PMD_SHIFT - PAGE_SHIFT) < 2, - "We need more than 2 pages to do deferred thp split"); - - if (!mmu_has_feature(MMU_FTR_16M_PAGE)) - return 0; - /* - * We support THP only if PMD_SIZE is 16MB. - */ - if (mmu_psize_defs[MMU_PAGE_16M].shift != PMD_SHIFT) - return 0; - /* - * We need to make sure that we support 16MB hugepage in a segement - * with base page size 64K or 4K. We only enable THP with a PAGE_SIZE - * of 64K. - */ - /* - * If we have 64K HPTE, we will be using that by default - */ - if (mmu_psize_defs[MMU_PAGE_64K].shift && - (mmu_psize_defs[MMU_PAGE_64K].penc[MMU_PAGE_16M] == -1)) - return 0; - /* - * Ok we only have 4K HPTE - */ - if (mmu_psize_defs[MMU_PAGE_4K].penc[MMU_PAGE_16M] == -1) - return 0; - - return 1; -} -#endif /* CONFIG_TRANSPARENT_HUGEPAGE */ diff --git a/arch/powerpc/mm/slb.c b/arch/powerpc/mm/slb.c index 825b6873391f..48fc28bab544 100644 --- a/arch/powerpc/mm/slb.c +++ b/arch/powerpc/mm/slb.c @@ -32,7 +32,6 @@ enum slb_index { }; extern void slb_allocate_realmode(unsigned long ea); -extern void slb_allocate_user(unsigned long ea); static void slb_allocate(unsigned long ea) { diff --git a/arch/powerpc/mm/slb_low.S b/arch/powerpc/mm/slb_low.S index 736d18b3cefd..dfdb90cb4403 100644 --- a/arch/powerpc/mm/slb_low.S +++ b/arch/powerpc/mm/slb_low.S @@ -35,7 +35,7 @@ _GLOBAL(slb_allocate_realmode) * check for bad kernel/user address * (ea & ~REGION_MASK) >= PGTABLE_RANGE */ - rldicr. r9,r3,4,(63 - PGTABLE_EADDR_SIZE - 4) + rldicr. r9,r3,4,(63 - H_PGTABLE_EADDR_SIZE - 4) bne- 8f srdi r9,r3,60 /* get region */ @@ -91,7 +91,7 @@ slb_miss_kernel_load_vmemmap: * can be demoted from 64K -> 4K dynamically on some machines */ clrldi r11,r10,48 - cmpldi r11,(VMALLOC_SIZE >> 28) - 1 + cmpldi r11,(H_VMALLOC_SIZE >> 28) - 1 bgt 5f lhz r11,PACAVMALLOCSLLP(r13) b 6f @@ -179,56 +179,6 @@ END_MMU_FTR_SECTION_IFSET(MMU_FTR_1T_SEGMENT) li r11,SLB_VSID_USER /* flags don't much matter */ b slb_finish_load -#ifdef __DISABLED__ - -/* void slb_allocate_user(unsigned long ea); - * - * Create an SLB entry for the given EA (user or kernel). - * r3 = faulting address, r13 = PACA - * r9, r10, r11 are clobbered by this function - * No other registers are examined or changed. - * - * It is called with translation enabled in order to be able to walk the - * page tables. This is not currently used. - */ -_GLOBAL(slb_allocate_user) - /* r3 = faulting address */ - srdi r10,r3,28 /* get esid */ - - crset 4*cr7+lt /* set "user" flag for later */ - - /* check if we fit in the range covered by the pagetables*/ - srdi. r9,r3,PGTABLE_EADDR_SIZE - crnot 4*cr0+eq,4*cr0+eq - beqlr - - /* now we need to get to the page tables in order to get the page - * size encoding from the PMD. In the future, we'll be able to deal - * with 1T segments too by getting the encoding from the PGD instead - */ - ld r9,PACAPGDIR(r13) - cmpldi cr0,r9,0 - beqlr - rlwinm r11,r10,8,25,28 - ldx r9,r9,r11 /* get pgd_t */ - cmpldi cr0,r9,0 - beqlr - rlwinm r11,r10,3,17,28 - ldx r9,r9,r11 /* get pmd_t */ - cmpldi cr0,r9,0 - beqlr - - /* build vsid flags */ - andi. r11,r9,SLB_VSID_LLP - ori r11,r11,SLB_VSID_USER - - /* get context to calculate proto-VSID */ - ld r9,PACACONTEXTID(r13) - /* fall through slb_finish_load */ - -#endif /* __DISABLED__ */ - - /* * Finish loading of an SLB entry and return * diff --git a/arch/powerpc/mm/slice.c b/arch/powerpc/mm/slice.c index 42954f0b47ac..2b27458902ee 100644 --- a/arch/powerpc/mm/slice.c +++ b/arch/powerpc/mm/slice.c @@ -37,8 +37,8 @@ #include <asm/hugetlb.h> /* some sanity checks */ -#if (PGTABLE_RANGE >> 43) > SLICE_MASK_SIZE -#error PGTABLE_RANGE exceeds slice_mask high_slices size +#if (H_PGTABLE_RANGE >> 43) > SLICE_MASK_SIZE +#error H_PGTABLE_RANGE exceeds slice_mask high_slices size #endif static DEFINE_SPINLOCK(slice_convert_lock); @@ -395,6 +395,7 @@ unsigned long slice_get_unmapped_area(unsigned long addr, unsigned long len, /* Sanity checks */ BUG_ON(mm->task_size == 0); + VM_BUG_ON(radix_enabled()); slice_dbg("slice_get_unmapped_area(mm=%p, psize=%d...\n", mm, psize); slice_dbg(" addr=%lx, len=%lx, flags=%lx, topdown=%d\n", @@ -568,6 +569,16 @@ unsigned int get_slice_psize(struct mm_struct *mm, unsigned long addr) unsigned char *hpsizes; int index, mask_index; + /* + * Radix doesn't use slice, but can get enabled along with MMU_SLICE + */ + if (radix_enabled()) { +#ifdef CONFIG_PPC_64K_PAGES + return MMU_PAGE_64K; +#else + return MMU_PAGE_4K; +#endif + } if (addr < SLICE_LOW_TOP) { u64 lpsizes; lpsizes = mm->context.low_slices_psize; @@ -605,6 +616,7 @@ void slice_set_user_psize(struct mm_struct *mm, unsigned int psize) slice_dbg("slice_set_user_psize(mm=%p, psize=%d)\n", mm, psize); + VM_BUG_ON(radix_enabled()); spin_lock_irqsave(&slice_convert_lock, flags); old_psize = mm->context.user_psize; @@ -649,6 +661,7 @@ void slice_set_range_psize(struct mm_struct *mm, unsigned long start, { struct slice_mask mask = slice_range_to_mask(start, len); + VM_BUG_ON(radix_enabled()); slice_convert(mm, mask, psize); } @@ -678,6 +691,9 @@ int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr, struct slice_mask mask, available; unsigned int psize = mm->context.user_psize; + if (radix_enabled()) + return 0; + mask = slice_range_to_mask(addr, len); available = slice_mask_for_size(mm, psize); #ifdef CONFIG_PPC_64K_PAGES diff --git a/arch/powerpc/mm/tlb-radix.c b/arch/powerpc/mm/tlb-radix.c new file mode 100644 index 000000000000..0fdaf93a3e09 --- /dev/null +++ b/arch/powerpc/mm/tlb-radix.c @@ -0,0 +1,251 @@ +/* + * TLB flush routines for radix kernels. + * + * Copyright 2015-2016, Aneesh Kumar K.V, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <linux/mm.h> +#include <linux/hugetlb.h> +#include <linux/memblock.h> + +#include <asm/tlb.h> +#include <asm/tlbflush.h> + +static DEFINE_RAW_SPINLOCK(native_tlbie_lock); + +static inline void __tlbiel_pid(unsigned long pid, int set) +{ + unsigned long rb,rs,ric,prs,r; + + rb = PPC_BIT(53); /* IS = 1 */ + rb |= set << PPC_BITLSHIFT(51); + rs = ((unsigned long)pid) << PPC_BITLSHIFT(31); + prs = 1; /* process scoped */ + r = 1; /* raidx format */ + ric = 2; /* invalidate all the caches */ + + asm volatile("ptesync": : :"memory"); + asm volatile(".long 0x7c000224 | (%0 << 11) | (%1 << 16) |" + "(%2 << 17) | (%3 << 18) | (%4 << 21)" + : : "r"(rb), "i"(r), "i"(prs), "i"(ric), "r"(rs) : "memory"); + asm volatile("ptesync": : :"memory"); +} + +/* + * We use 128 set in radix mode and 256 set in hpt mode. + */ +static inline void _tlbiel_pid(unsigned long pid) +{ + int set; + + for (set = 0; set < POWER9_TLB_SETS_RADIX ; set++) { + __tlbiel_pid(pid, set); + } + return; +} + +static inline void _tlbie_pid(unsigned long pid) +{ + unsigned long rb,rs,ric,prs,r; + + rb = PPC_BIT(53); /* IS = 1 */ + rs = pid << PPC_BITLSHIFT(31); + prs = 1; /* process scoped */ + r = 1; /* raidx format */ + ric = 2; /* invalidate all the caches */ + + asm volatile("ptesync": : :"memory"); + asm volatile(".long 0x7c000264 | (%0 << 11) | (%1 << 16) |" + "(%2 << 17) | (%3 << 18) | (%4 << 21)" + : : "r"(rb), "i"(r), "i"(prs), "i"(ric), "r"(rs) : "memory"); + asm volatile("eieio; tlbsync; ptesync": : :"memory"); +} + +static inline void _tlbiel_va(unsigned long va, unsigned long pid, + unsigned long ap) +{ + unsigned long rb,rs,ric,prs,r; + + rb = va & ~(PPC_BITMASK(52, 63)); + rb |= ap << PPC_BITLSHIFT(58); + rs = pid << PPC_BITLSHIFT(31); + prs = 1; /* process scoped */ + r = 1; /* raidx format */ + ric = 0; /* no cluster flush yet */ + + asm volatile("ptesync": : :"memory"); + asm volatile(".long 0x7c000224 | (%0 << 11) | (%1 << 16) |" + "(%2 << 17) | (%3 << 18) | (%4 << 21)" + : : "r"(rb), "i"(r), "i"(prs), "i"(ric), "r"(rs) : "memory"); + asm volatile("ptesync": : :"memory"); +} + +static inline void _tlbie_va(unsigned long va, unsigned long pid, + unsigned long ap) +{ + unsigned long rb,rs,ric,prs,r; + + rb = va & ~(PPC_BITMASK(52, 63)); + rb |= ap << PPC_BITLSHIFT(58); + rs = pid << PPC_BITLSHIFT(31); + prs = 1; /* process scoped */ + r = 1; /* raidx format */ + ric = 0; /* no cluster flush yet */ + + asm volatile("ptesync": : :"memory"); + asm volatile(".long 0x7c000264 | (%0 << 11) | (%1 << 16) |" + "(%2 << 17) | (%3 << 18) | (%4 << 21)" + : : "r"(rb), "i"(r), "i"(prs), "i"(ric), "r"(rs) : "memory"); + asm volatile("eieio; tlbsync; ptesync": : :"memory"); +} + +/* + * Base TLB flushing operations: + * + * - flush_tlb_mm(mm) flushes the specified mm context TLB's + * - flush_tlb_page(vma, vmaddr) flushes one page + * - flush_tlb_range(vma, start, end) flushes a range of pages + * - flush_tlb_kernel_range(start, end) flushes kernel pages + * + * - local_* variants of page and mm only apply to the current + * processor + */ +void radix__local_flush_tlb_mm(struct mm_struct *mm) +{ + unsigned int pid; + + preempt_disable(); + pid = mm->context.id; + if (pid != MMU_NO_CONTEXT) + _tlbiel_pid(pid); + preempt_enable(); +} +EXPORT_SYMBOL(radix__local_flush_tlb_mm); + +void radix___local_flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr, + unsigned long ap, int nid) +{ + unsigned int pid; + + preempt_disable(); + pid = mm ? mm->context.id : 0; + if (pid != MMU_NO_CONTEXT) + _tlbiel_va(vmaddr, pid, ap); + preempt_enable(); +} + +void radix__local_flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr) +{ +#ifdef CONFIG_HUGETLB_PAGE + /* need the return fix for nohash.c */ + if (vma && is_vm_hugetlb_page(vma)) + return __local_flush_hugetlb_page(vma, vmaddr); +#endif + radix___local_flush_tlb_page(vma ? vma->vm_mm : NULL, vmaddr, + mmu_get_ap(mmu_virtual_psize), 0); +} +EXPORT_SYMBOL(radix__local_flush_tlb_page); + +#ifdef CONFIG_SMP +static int mm_is_core_local(struct mm_struct *mm) +{ + return cpumask_subset(mm_cpumask(mm), + topology_sibling_cpumask(smp_processor_id())); +} + +void radix__flush_tlb_mm(struct mm_struct *mm) +{ + unsigned int pid; + + preempt_disable(); + pid = mm->context.id; + if (unlikely(pid == MMU_NO_CONTEXT)) + goto no_context; + + if (!mm_is_core_local(mm)) { + int lock_tlbie = !mmu_has_feature(MMU_FTR_LOCKLESS_TLBIE); + + if (lock_tlbie) + raw_spin_lock(&native_tlbie_lock); + _tlbie_pid(pid); + if (lock_tlbie) + raw_spin_unlock(&native_tlbie_lock); + } else + _tlbiel_pid(pid); +no_context: + preempt_enable(); +} +EXPORT_SYMBOL(radix__flush_tlb_mm); + +void radix___flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr, + unsigned long ap, int nid) +{ + unsigned int pid; + + preempt_disable(); + pid = mm ? mm->context.id : 0; + if (unlikely(pid == MMU_NO_CONTEXT)) + goto bail; + if (!mm_is_core_local(mm)) { + int lock_tlbie = !mmu_has_feature(MMU_FTR_LOCKLESS_TLBIE); + + if (lock_tlbie) + raw_spin_lock(&native_tlbie_lock); + _tlbie_va(vmaddr, pid, ap); + if (lock_tlbie) + raw_spin_unlock(&native_tlbie_lock); + } else + _tlbiel_va(vmaddr, pid, ap); +bail: + preempt_enable(); +} + +void radix__flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr) +{ +#ifdef CONFIG_HUGETLB_PAGE + if (vma && is_vm_hugetlb_page(vma)) + return flush_hugetlb_page(vma, vmaddr); +#endif + radix___flush_tlb_page(vma ? vma->vm_mm : NULL, vmaddr, + mmu_get_ap(mmu_virtual_psize), 0); +} +EXPORT_SYMBOL(radix__flush_tlb_page); + +#endif /* CONFIG_SMP */ + +void radix__flush_tlb_kernel_range(unsigned long start, unsigned long end) +{ + int lock_tlbie = !mmu_has_feature(MMU_FTR_LOCKLESS_TLBIE); + + if (lock_tlbie) + raw_spin_lock(&native_tlbie_lock); + _tlbie_pid(0); + if (lock_tlbie) + raw_spin_unlock(&native_tlbie_lock); +} +EXPORT_SYMBOL(radix__flush_tlb_kernel_range); + +/* + * Currently, for range flushing, we just do a full mm flush. Because + * we use this in code path where we don' track the page size. + */ +void radix__flush_tlb_range(struct vm_area_struct *vma, unsigned long start, + unsigned long end) + +{ + struct mm_struct *mm = vma->vm_mm; + radix__flush_tlb_mm(mm); +} +EXPORT_SYMBOL(radix__flush_tlb_range); + + +void radix__tlb_flush(struct mmu_gather *tlb) +{ + struct mm_struct *mm = tlb->mm; + radix__flush_tlb_mm(mm); +} diff --git a/arch/powerpc/mm/tlb_hash64.c b/arch/powerpc/mm/tlb_hash64.c index f7b80391bee7..4517aa43a8b1 100644 --- a/arch/powerpc/mm/tlb_hash64.c +++ b/arch/powerpc/mm/tlb_hash64.c @@ -155,7 +155,7 @@ void __flush_tlb_pending(struct ppc64_tlb_batch *batch) batch->index = 0; } -void tlb_flush(struct mmu_gather *tlb) +void hash__tlb_flush(struct mmu_gather *tlb) { struct ppc64_tlb_batch *tlbbatch = &get_cpu_var(ppc64_tlb_batch); @@ -218,7 +218,7 @@ void __flush_hash_table_range(struct mm_struct *mm, unsigned long start, pte = pte_val(*ptep); if (is_thp) trace_hugepage_invalidate(start, pte); - if (!(pte & _PAGE_HASHPTE)) + if (!(pte & H_PAGE_HASHPTE)) continue; if (unlikely(is_thp)) hpte_do_hugepage_flush(mm, start, (pmd_t *)ptep, pte); @@ -248,7 +248,7 @@ void flush_tlb_pmd_range(struct mm_struct *mm, pmd_t *pmd, unsigned long addr) start_pte = pte_offset_map(pmd, addr); for (pte = start_pte; pte < start_pte + PTRS_PER_PTE; pte++) { unsigned long pteval = pte_val(*pte); - if (pteval & _PAGE_HASHPTE) + if (pteval & H_PAGE_HASHPTE) hpte_need_flush(mm, addr, pte, pteval, 0); addr += PAGE_SIZE; } diff --git a/arch/powerpc/perf/Makefile b/arch/powerpc/perf/Makefile index f9c083a5652a..77b6394a7c50 100644 --- a/arch/powerpc/perf/Makefile +++ b/arch/powerpc/perf/Makefile @@ -1,6 +1,6 @@ subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror -obj-$(CONFIG_PERF_EVENTS) += callchain.o +obj-$(CONFIG_PERF_EVENTS) += callchain.o perf_regs.o obj-$(CONFIG_PPC_PERF_CTRS) += core-book3s.o bhrb.o obj64-$(CONFIG_PPC_PERF_CTRS) += power4-pmu.o ppc970-pmu.o power5-pmu.o \ diff --git a/arch/powerpc/perf/callchain.c b/arch/powerpc/perf/callchain.c index 22d9015c1acc..26d37e6f924e 100644 --- a/arch/powerpc/perf/callchain.c +++ b/arch/powerpc/perf/callchain.c @@ -137,7 +137,7 @@ static int read_user_stack_slow(void __user *ptr, void *buf, int nb) offset = addr & ((1UL << shift) - 1); pte = READ_ONCE(*ptep); - if (!pte_present(pte) || !(pte_val(pte) & _PAGE_USER)) + if (!pte_present(pte) || !pte_user(pte)) goto err_out; pfn = pte_pfn(pte); if (!page_is_ram(pfn)) diff --git a/arch/powerpc/perf/perf_regs.c b/arch/powerpc/perf/perf_regs.c new file mode 100644 index 000000000000..d24a8a3668fa --- /dev/null +++ b/arch/powerpc/perf/perf_regs.c @@ -0,0 +1,104 @@ +/* + * Copyright 2016 Anju T, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/perf_event.h> +#include <linux/bug.h> +#include <linux/stddef.h> +#include <asm/ptrace.h> +#include <asm/perf_regs.h> + +#define PT_REGS_OFFSET(id, r) [id] = offsetof(struct pt_regs, r) + +#define REG_RESERVED (~((1ULL << PERF_REG_POWERPC_MAX) - 1)) + +static unsigned int pt_regs_offset[PERF_REG_POWERPC_MAX] = { + PT_REGS_OFFSET(PERF_REG_POWERPC_R0, gpr[0]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R1, gpr[1]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R2, gpr[2]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R3, gpr[3]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R4, gpr[4]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R5, gpr[5]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R6, gpr[6]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R7, gpr[7]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R8, gpr[8]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R9, gpr[9]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R10, gpr[10]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R11, gpr[11]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R12, gpr[12]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R13, gpr[13]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R14, gpr[14]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R15, gpr[15]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R16, gpr[16]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R17, gpr[17]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R18, gpr[18]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R19, gpr[19]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R20, gpr[20]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R21, gpr[21]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R22, gpr[22]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R23, gpr[23]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R24, gpr[24]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R25, gpr[25]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R26, gpr[26]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R27, gpr[27]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R28, gpr[28]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R29, gpr[29]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R30, gpr[30]), + PT_REGS_OFFSET(PERF_REG_POWERPC_R31, gpr[31]), + PT_REGS_OFFSET(PERF_REG_POWERPC_NIP, nip), + PT_REGS_OFFSET(PERF_REG_POWERPC_MSR, msr), + PT_REGS_OFFSET(PERF_REG_POWERPC_ORIG_R3, orig_gpr3), + PT_REGS_OFFSET(PERF_REG_POWERPC_CTR, ctr), + PT_REGS_OFFSET(PERF_REG_POWERPC_LINK, link), + PT_REGS_OFFSET(PERF_REG_POWERPC_XER, xer), + PT_REGS_OFFSET(PERF_REG_POWERPC_CCR, ccr), +#ifdef CONFIG_PPC64 + PT_REGS_OFFSET(PERF_REG_POWERPC_SOFTE, softe), +#else + PT_REGS_OFFSET(PERF_REG_POWERPC_SOFTE, mq), +#endif + PT_REGS_OFFSET(PERF_REG_POWERPC_TRAP, trap), + PT_REGS_OFFSET(PERF_REG_POWERPC_DAR, dar), + PT_REGS_OFFSET(PERF_REG_POWERPC_DSISR, dsisr), +}; + +u64 perf_reg_value(struct pt_regs *regs, int idx) +{ + if (WARN_ON_ONCE(idx >= PERF_REG_POWERPC_MAX)) + return 0; + + return regs_get_register(regs, pt_regs_offset[idx]); +} + +int perf_reg_validate(u64 mask) +{ + if (!mask || mask & REG_RESERVED) + return -EINVAL; + return 0; +} + +u64 perf_reg_abi(struct task_struct *task) +{ +#ifdef CONFIG_PPC64 + if (!test_tsk_thread_flag(task, TIF_32BIT)) + return PERF_SAMPLE_REGS_ABI_64; + else +#endif + return PERF_SAMPLE_REGS_ABI_32; +} + +void perf_get_regs_user(struct perf_regs *regs_user, + struct pt_regs *regs, + struct pt_regs *regs_user_copy) +{ + regs_user->regs = task_pt_regs(current); + regs_user->abi = perf_reg_abi(current); +} diff --git a/arch/powerpc/perf/power8-events-list.h b/arch/powerpc/perf/power8-events-list.h index 741b77edd03e..3a2e6e8ebb92 100644 --- a/arch/powerpc/perf/power8-events-list.h +++ b/arch/powerpc/perf/power8-events-list.h @@ -49,3 +49,43 @@ EVENT(PM_L3_PREF_ALL, 0x4e052) EVENT(PM_DTLB_MISS, 0x300fc) /* ITLB Reloaded */ EVENT(PM_ITLB_MISS, 0x400fc) +/* Run_Instructions */ +EVENT(PM_RUN_INST_CMPL, 0x500fa) +/* Alternate event code for PM_RUN_INST_CMPL */ +EVENT(PM_RUN_INST_CMPL_ALT, 0x400fa) +/* Run_cycles */ +EVENT(PM_RUN_CYC, 0x600f4) +/* Alternate event code for Run_cycles */ +EVENT(PM_RUN_CYC_ALT, 0x200f4) +/* Marked store completed */ +EVENT(PM_MRK_ST_CMPL, 0x10134) +/* Alternate event code for Marked store completed */ +EVENT(PM_MRK_ST_CMPL_ALT, 0x301e2) +/* Marked two path branch */ +EVENT(PM_BR_MRK_2PATH, 0x10138) +/* Alternate event code for PM_BR_MRK_2PATH */ +EVENT(PM_BR_MRK_2PATH_ALT, 0x40138) +/* L3 castouts in Mepf state */ +EVENT(PM_L3_CO_MEPF, 0x18082) +/* Alternate event code for PM_L3_CO_MEPF */ +EVENT(PM_L3_CO_MEPF_ALT, 0x3e05e) +/* Data cache was reloaded from a location other than L2 due to a marked load */ +EVENT(PM_MRK_DATA_FROM_L2MISS, 0x1d14e) +/* Alternate event code for PM_MRK_DATA_FROM_L2MISS */ +EVENT(PM_MRK_DATA_FROM_L2MISS_ALT, 0x401e8) +/* Alternate event code for PM_CMPLU_STALL */ +EVENT(PM_CMPLU_STALL_ALT, 0x1e054) +/* Two path branch */ +EVENT(PM_BR_2PATH, 0x20036) +/* Alternate event code for PM_BR_2PATH */ +EVENT(PM_BR_2PATH_ALT, 0x40036) +/* # PPC Dispatched */ +EVENT(PM_INST_DISP, 0x200f2) +/* Alternate event code for PM_INST_DISP */ +EVENT(PM_INST_DISP_ALT, 0x300f2) +/* Marked filter Match */ +EVENT(PM_MRK_FILT_MATCH, 0x2013c) +/* Alternate event code for PM_MRK_FILT_MATCH */ +EVENT(PM_MRK_FILT_MATCH_ALT, 0x3012e) +/* Alternate event code for PM_LD_MISS_L1 */ +EVENT(PM_LD_MISS_L1_ALT, 0x400f0) diff --git a/arch/powerpc/perf/power8-pmu.c b/arch/powerpc/perf/power8-pmu.c index 690d9186a855..7cf3b4378192 100644 --- a/arch/powerpc/perf/power8-pmu.c +++ b/arch/powerpc/perf/power8-pmu.c @@ -274,7 +274,8 @@ static int power8_get_constraint(u64 event, unsigned long *maskp, unsigned long /* Ignore Linux defined bits when checking event below */ base_event = event & ~EVENT_LINUX_MASK; - if (pmc >= 5 && base_event != 0x500fa && base_event != 0x600f4) + if (pmc >= 5 && base_event != PM_RUN_INST_CMPL && + base_event != PM_RUN_CYC) return -1; mask |= CNST_PMC_MASK(pmc); @@ -488,17 +489,17 @@ static int power8_compute_mmcr(u64 event[], int n_ev, /* Table of alternatives, sorted by column 0 */ static const unsigned int event_alternatives[][MAX_ALT] = { - { 0x10134, 0x301e2 }, /* PM_MRK_ST_CMPL */ - { 0x10138, 0x40138 }, /* PM_BR_MRK_2PATH */ - { 0x18082, 0x3e05e }, /* PM_L3_CO_MEPF */ - { 0x1d14e, 0x401e8 }, /* PM_MRK_DATA_FROM_L2MISS */ - { 0x1e054, 0x4000a }, /* PM_CMPLU_STALL */ - { 0x20036, 0x40036 }, /* PM_BR_2PATH */ - { 0x200f2, 0x300f2 }, /* PM_INST_DISP */ - { 0x200f4, 0x600f4 }, /* PM_RUN_CYC */ - { 0x2013c, 0x3012e }, /* PM_MRK_FILT_MATCH */ - { 0x3e054, 0x400f0 }, /* PM_LD_MISS_L1 */ - { 0x400fa, 0x500fa }, /* PM_RUN_INST_CMPL */ + { PM_MRK_ST_CMPL, PM_MRK_ST_CMPL_ALT }, + { PM_BR_MRK_2PATH, PM_BR_MRK_2PATH_ALT }, + { PM_L3_CO_MEPF, PM_L3_CO_MEPF_ALT }, + { PM_MRK_DATA_FROM_L2MISS, PM_MRK_DATA_FROM_L2MISS_ALT }, + { PM_CMPLU_STALL_ALT, PM_CMPLU_STALL }, + { PM_BR_2PATH, PM_BR_2PATH_ALT }, + { PM_INST_DISP, PM_INST_DISP_ALT }, + { PM_RUN_CYC_ALT, PM_RUN_CYC }, + { PM_MRK_FILT_MATCH, PM_MRK_FILT_MATCH_ALT }, + { PM_LD_MISS_L1, PM_LD_MISS_L1_ALT }, + { PM_RUN_INST_CMPL_ALT, PM_RUN_INST_CMPL }, }; /* @@ -546,17 +547,17 @@ static int power8_get_alternatives(u64 event, unsigned int flags, u64 alt[]) j = num_alt; for (i = 0; i < num_alt; ++i) { switch (alt[i]) { - case 0x1e: /* PM_CYC */ - alt[j++] = 0x600f4; /* PM_RUN_CYC */ + case PM_CYC: + alt[j++] = PM_RUN_CYC; break; - case 0x600f4: /* PM_RUN_CYC */ - alt[j++] = 0x1e; + case PM_RUN_CYC: + alt[j++] = PM_CYC; break; - case 0x2: /* PM_PPC_CMPL */ - alt[j++] = 0x500fa; /* PM_RUN_INST_CMPL */ + case PM_INST_CMPL: + alt[j++] = PM_RUN_INST_CMPL; break; - case 0x500fa: /* PM_RUN_INST_CMPL */ - alt[j++] = 0x2; /* PM_PPC_CMPL */ + case PM_RUN_INST_CMPL: + alt[j++] = PM_INST_CMPL; break; } } diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index 142dff5e96d6..77e9b8d591fb 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -72,7 +72,7 @@ config PPC_BOOK3S_64 select PPC_FPU select PPC_HAVE_PMU_SUPPORT select SYS_SUPPORTS_HUGETLBFS - select HAVE_ARCH_TRANSPARENT_HUGEPAGE if PPC_64K_PAGES + select HAVE_ARCH_TRANSPARENT_HUGEPAGE select ARCH_SUPPORTS_NUMA_BALANCING select IRQ_WORK @@ -331,6 +331,15 @@ config PPC_STD_MMU_64 def_bool y depends on PPC_STD_MMU && PPC64 +config PPC_RADIX_MMU + bool "Radix MMU Support" + depends on PPC_BOOK3S_64 + default y + help + Enable support for the Power ISA 3.0 Radix style MMU. Currently this + is only implemented by IBM Power9 CPUs, if you don't have one of them + you can probably disable this. + config PPC_MMU_NOHASH def_bool y depends on !PPC_STD_MMU diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c index f7af74f83693..3cbe38fad609 100644 --- a/arch/powerpc/platforms/cell/spu_base.c +++ b/arch/powerpc/platforms/cell/spu_base.c @@ -24,7 +24,7 @@ #include <linux/interrupt.h> #include <linux/list.h> -#include <linux/module.h> +#include <linux/init.h> #include <linux/ptrace.h> #include <linux/slab.h> #include <linux/wait.h> @@ -197,7 +197,7 @@ static int __spu_trap_data_map(struct spu *spu, unsigned long ea, u64 dsisr) (REGION_ID(ea) != USER_REGION_ID)) { spin_unlock(&spu->register_lock); - ret = hash_page(ea, _PAGE_PRESENT, 0x300, dsisr); + ret = hash_page(ea, _PAGE_PRESENT | _PAGE_READ, 0x300, dsisr); spin_lock(&spu->register_lock); if (!ret) { @@ -805,7 +805,4 @@ static int __init init_spu_base(void) out: return ret; } -module_init(init_spu_base); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Arnd Bergmann <arndb@de.ibm.com>"); +device_initcall(init_spu_base); diff --git a/arch/powerpc/platforms/cell/spufs/fault.c b/arch/powerpc/platforms/cell/spufs/fault.c index d98f845ac777..e29e4d5afa2d 100644 --- a/arch/powerpc/platforms/cell/spufs/fault.c +++ b/arch/powerpc/platforms/cell/spufs/fault.c @@ -141,8 +141,8 @@ int spufs_handle_class1(struct spu_context *ctx) /* we must not hold the lock when entering copro_handle_mm_fault */ spu_release(ctx); - access = (_PAGE_PRESENT | _PAGE_USER); - access |= (dsisr & MFC_DSISR_ACCESS_PUT) ? _PAGE_RW : 0UL; + access = (_PAGE_PRESENT | _PAGE_READ); + access |= (dsisr & MFC_DSISR_ACCESS_PUT) ? _PAGE_WRITE : 0UL; local_irq_save(flags); ret = hash_page(ea, access, 0x300, dsisr); local_irq_restore(flags); diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c index 950b3e539057..9226df11bf39 100644 --- a/arch/powerpc/platforms/powernv/eeh-powernv.c +++ b/arch/powerpc/platforms/powernv/eeh-powernv.c @@ -75,7 +75,7 @@ static int pnv_eeh_init(void) * and P7IOC separately. So we should regard * PE#0 as valid for PHB3 and P7IOC. */ - if (phb->ioda.reserved_pe != 0) + if (phb->ioda.reserved_pe_idx != 0) eeh_add_flag(EEH_VALID_PE_ZERO); break; @@ -1009,8 +1009,9 @@ static int pnv_eeh_reset_vf_pe(struct eeh_pe *pe, int option) static int pnv_eeh_reset(struct eeh_pe *pe, int option) { struct pci_controller *hose = pe->phb; + struct pnv_phb *phb; struct pci_bus *bus; - int ret; + int64_t rc; /* * For PHB reset, we always have complete reset. For those PEs whose @@ -1026,45 +1027,39 @@ static int pnv_eeh_reset(struct eeh_pe *pe, int option) * reset. The side effect is that EEH core has to clear the frozen * state explicitly after BAR restore. */ - if (pe->type & EEH_PE_PHB) { - ret = pnv_eeh_phb_reset(hose, option); - } else { - struct pnv_phb *phb; - s64 rc; + if (pe->type & EEH_PE_PHB) + return pnv_eeh_phb_reset(hose, option); - /* - * The frozen PE might be caused by PAPR error injection - * registers, which are expected to be cleared after hitting - * frozen PE as stated in the hardware spec. Unfortunately, - * that's not true on P7IOC. So we have to clear it manually - * to avoid recursive EEH errors during recovery. - */ - phb = hose->private_data; - if (phb->model == PNV_PHB_MODEL_P7IOC && - (option == EEH_RESET_HOT || - option == EEH_RESET_FUNDAMENTAL)) { - rc = opal_pci_reset(phb->opal_id, - OPAL_RESET_PHB_ERROR, - OPAL_ASSERT_RESET); - if (rc != OPAL_SUCCESS) { - pr_warn("%s: Failure %lld clearing " - "error injection registers\n", - __func__, rc); - return -EIO; - } + /* + * The frozen PE might be caused by PAPR error injection + * registers, which are expected to be cleared after hitting + * frozen PE as stated in the hardware spec. Unfortunately, + * that's not true on P7IOC. So we have to clear it manually + * to avoid recursive EEH errors during recovery. + */ + phb = hose->private_data; + if (phb->model == PNV_PHB_MODEL_P7IOC && + (option == EEH_RESET_HOT || + option == EEH_RESET_FUNDAMENTAL)) { + rc = opal_pci_reset(phb->opal_id, + OPAL_RESET_PHB_ERROR, + OPAL_ASSERT_RESET); + if (rc != OPAL_SUCCESS) { + pr_warn("%s: Failure %lld clearing error injection registers\n", + __func__, rc); + return -EIO; } - - bus = eeh_pe_bus_get(pe); - if (pe->type & EEH_PE_VF) - ret = pnv_eeh_reset_vf_pe(pe, option); - else if (pci_is_root_bus(bus) || - pci_is_root_bus(bus->parent)) - ret = pnv_eeh_root_reset(hose, option); - else - ret = pnv_eeh_bridge_reset(bus->self, option); } - return ret; + bus = eeh_pe_bus_get(pe); + if (pe->type & EEH_PE_VF) + return pnv_eeh_reset_vf_pe(pe, option); + + if (pci_is_root_bus(bus) || + pci_is_root_bus(bus->parent)) + return pnv_eeh_root_reset(hose, option); + + return pnv_eeh_bridge_reset(bus->self, option); } /** diff --git a/arch/powerpc/platforms/powernv/npu-dma.c b/arch/powerpc/platforms/powernv/npu-dma.c index 7229acd9bb3a..0459e100b4e7 100644 --- a/arch/powerpc/platforms/powernv/npu-dma.c +++ b/arch/powerpc/platforms/powernv/npu-dma.c @@ -12,6 +12,7 @@ #include <linux/export.h> #include <linux/pci.h> #include <linux/memblock.h> +#include <linux/iommu.h> #include <asm/iommu.h> #include <asm/pnv-pci.h> @@ -25,8 +26,6 @@ * Other types of TCE cache invalidation are not functional in the * hardware. */ -#define TCE_KILL_INVAL_ALL PPC_BIT(0) - static struct pci_dev *get_pci_dev(struct device_node *dn) { return PCI_DN(dn)->pcidev; @@ -138,22 +137,17 @@ static struct pnv_ioda_pe *get_gpu_pci_dev_and_pe(struct pnv_ioda_pe *npe, struct pnv_ioda_pe *pe; struct pci_dn *pdn; - if (npe->flags & PNV_IODA_PE_PEER) { - pe = npe->peers[0]; - pdev = pe->pdev; - } else { - pdev = pnv_pci_get_gpu_dev(npe->pdev); - if (!pdev) - return NULL; + pdev = pnv_pci_get_gpu_dev(npe->pdev); + if (!pdev) + return NULL; - pdn = pci_get_pdn(pdev); - if (WARN_ON(!pdn || pdn->pe_number == IODA_INVALID_PE)) - return NULL; + pdn = pci_get_pdn(pdev); + if (WARN_ON(!pdn || pdn->pe_number == IODA_INVALID_PE)) + return NULL; - hose = pci_bus_to_host(pdev->bus); - phb = hose->private_data; - pe = &phb->ioda.pe_array[pdn->pe_number]; - } + hose = pci_bus_to_host(pdev->bus); + phb = hose->private_data; + pe = &phb->ioda.pe_array[pdn->pe_number]; if (gpdev) *gpdev = pdev; @@ -161,92 +155,70 @@ static struct pnv_ioda_pe *get_gpu_pci_dev_and_pe(struct pnv_ioda_pe *npe, return pe; } -void pnv_npu_tce_invalidate_entire(struct pnv_ioda_pe *npe) +long pnv_npu_set_window(struct pnv_ioda_pe *npe, int num, + struct iommu_table *tbl) { struct pnv_phb *phb = npe->phb; + int64_t rc; + const unsigned long size = tbl->it_indirect_levels ? + tbl->it_level_size : tbl->it_size; + const __u64 start_addr = tbl->it_offset << tbl->it_page_shift; + const __u64 win_size = tbl->it_size << tbl->it_page_shift; + + pe_info(npe, "Setting up window %llx..%llx pg=%lx\n", + start_addr, start_addr + win_size - 1, + IOMMU_PAGE_SIZE(tbl)); + + rc = opal_pci_map_pe_dma_window(phb->opal_id, + npe->pe_number, + npe->pe_number, + tbl->it_indirect_levels + 1, + __pa(tbl->it_base), + size << 3, + IOMMU_PAGE_SIZE(tbl)); + if (rc) { + pe_err(npe, "Failed to configure TCE table, err %lld\n", rc); + return rc; + } + pnv_pci_ioda2_tce_invalidate_entire(phb, false); - if (WARN_ON(phb->type != PNV_PHB_NPU || - !phb->ioda.tce_inval_reg || - !(npe->flags & PNV_IODA_PE_DEV))) - return; + /* Add the table to the list so its TCE cache will get invalidated */ + pnv_pci_link_table_and_group(phb->hose->node, num, + tbl, &npe->table_group); - mb(); /* Ensure previous TCE table stores are visible */ - __raw_writeq(cpu_to_be64(TCE_KILL_INVAL_ALL), - phb->ioda.tce_inval_reg); + return 0; } -void pnv_npu_tce_invalidate(struct pnv_ioda_pe *npe, - struct iommu_table *tbl, - unsigned long index, - unsigned long npages, - bool rm) +long pnv_npu_unset_window(struct pnv_ioda_pe *npe, int num) { struct pnv_phb *phb = npe->phb; + int64_t rc; - /* We can only invalidate the whole cache on NPU */ - unsigned long val = TCE_KILL_INVAL_ALL; - - if (WARN_ON(phb->type != PNV_PHB_NPU || - !phb->ioda.tce_inval_reg || - !(npe->flags & PNV_IODA_PE_DEV))) - return; - - mb(); /* Ensure previous TCE table stores are visible */ - if (rm) - __raw_rm_writeq(cpu_to_be64(val), - (__be64 __iomem *) phb->ioda.tce_inval_reg_phys); - else - __raw_writeq(cpu_to_be64(val), - phb->ioda.tce_inval_reg); -} - -void pnv_npu_init_dma_pe(struct pnv_ioda_pe *npe) -{ - struct pnv_ioda_pe *gpe; - struct pci_dev *gpdev; - int i, avail = -1; - - if (!npe->pdev || !(npe->flags & PNV_IODA_PE_DEV)) - return; - - gpe = get_gpu_pci_dev_and_pe(npe, &gpdev); - if (!gpe) - return; - - for (i = 0; i < PNV_IODA_MAX_PEER_PES; i++) { - /* Nothing to do if the PE is already connected. */ - if (gpe->peers[i] == npe) - return; + pe_info(npe, "Removing DMA window\n"); - if (!gpe->peers[i]) - avail = i; + rc = opal_pci_map_pe_dma_window(phb->opal_id, npe->pe_number, + npe->pe_number, + 0/* levels */, 0/* table address */, + 0/* table size */, 0/* page size */); + if (rc) { + pe_err(npe, "Unmapping failed, ret = %lld\n", rc); + return rc; } + pnv_pci_ioda2_tce_invalidate_entire(phb, false); - if (WARN_ON(avail < 0)) - return; - - gpe->peers[avail] = npe; - gpe->flags |= PNV_IODA_PE_PEER; + pnv_pci_unlink_table_and_group(npe->table_group.tables[num], + &npe->table_group); - /* - * We assume that the NPU devices only have a single peer PE - * (the GPU PCIe device PE). - */ - npe->peers[0] = gpe; - npe->flags |= PNV_IODA_PE_PEER; + return 0; } /* - * For the NPU we want to point the TCE table at the same table as the - * real PCI device. + * Enables 32 bit DMA on NPU. */ -static void pnv_npu_disable_bypass(struct pnv_ioda_pe *npe) +static void pnv_npu_dma_set_32(struct pnv_ioda_pe *npe) { - struct pnv_phb *phb = npe->phb; struct pci_dev *gpdev; struct pnv_ioda_pe *gpe; - void *addr; - unsigned int size; int64_t rc; /* @@ -260,14 +232,7 @@ static void pnv_npu_disable_bypass(struct pnv_ioda_pe *npe) if (!gpe) return; - addr = (void *)gpe->table_group.tables[0]->it_base; - size = gpe->table_group.tables[0]->it_size << 3; - rc = opal_pci_map_pe_dma_window(phb->opal_id, npe->pe_number, - npe->pe_number, 1, __pa(addr), - size, 0x1000); - if (rc != OPAL_SUCCESS) - pr_warn("%s: Error %lld setting DMA window on PHB#%d-PE#%d\n", - __func__, rc, phb->hose->global_number, npe->pe_number); + rc = pnv_npu_set_window(npe, 0, gpe->table_group.tables[0]); /* * We don't initialise npu_pe->tce32_table as we always use @@ -277,72 +242,120 @@ static void pnv_npu_disable_bypass(struct pnv_ioda_pe *npe) } /* - * Enable/disable bypass mode on the NPU. The NPU only supports one + * Enables bypass mode on the NPU. The NPU only supports one * window per link, so bypass needs to be explicitly enabled or * disabled. Unlike for a PHB3 bypass and non-bypass modes can't be * active at the same time. */ -int pnv_npu_dma_set_bypass(struct pnv_ioda_pe *npe, bool enable) +static int pnv_npu_dma_set_bypass(struct pnv_ioda_pe *npe) { struct pnv_phb *phb = npe->phb; int64_t rc = 0; + phys_addr_t top = memblock_end_of_DRAM(); if (phb->type != PNV_PHB_NPU || !npe->pdev) return -EINVAL; - if (enable) { - /* Enable the bypass window */ - phys_addr_t top = memblock_end_of_DRAM(); - - npe->tce_bypass_base = 0; - top = roundup_pow_of_two(top); - dev_info(&npe->pdev->dev, "Enabling bypass for PE %d\n", - npe->pe_number); - rc = opal_pci_map_pe_dma_window_real(phb->opal_id, - npe->pe_number, npe->pe_number, - npe->tce_bypass_base, top); - } else { - /* - * Disable the bypass window by replacing it with the - * TCE32 window. - */ - pnv_npu_disable_bypass(npe); - } + rc = pnv_npu_unset_window(npe, 0); + if (rc != OPAL_SUCCESS) + return rc; + + /* Enable the bypass window */ + + top = roundup_pow_of_two(top); + dev_info(&npe->pdev->dev, "Enabling bypass for PE %d\n", + npe->pe_number); + rc = opal_pci_map_pe_dma_window_real(phb->opal_id, + npe->pe_number, npe->pe_number, + 0 /* bypass base */, top); + + if (rc == OPAL_SUCCESS) + pnv_pci_ioda2_tce_invalidate_entire(phb, false); return rc; } -int pnv_npu_dma_set_mask(struct pci_dev *npdev, u64 dma_mask) +void pnv_npu_try_dma_set_bypass(struct pci_dev *gpdev, bool bypass) { - struct pci_controller *hose = pci_bus_to_host(npdev->bus); - struct pnv_phb *phb = hose->private_data; - struct pci_dn *pdn = pci_get_pdn(npdev); - struct pnv_ioda_pe *npe, *gpe; - struct pci_dev *gpdev; - uint64_t top; - bool bypass = false; + int i; + struct pnv_phb *phb; + struct pci_dn *pdn; + struct pnv_ioda_pe *npe; + struct pci_dev *npdev; - if (WARN_ON(!pdn || pdn->pe_number == IODA_INVALID_PE)) - return -ENXIO; + for (i = 0; ; ++i) { + npdev = pnv_pci_get_npu_dev(gpdev, i); - /* We only do bypass if it's enabled on the linked device */ - npe = &phb->ioda.pe_array[pdn->pe_number]; - gpe = get_gpu_pci_dev_and_pe(npe, &gpdev); - if (!gpe) - return -ENODEV; + if (!npdev) + break; + + pdn = pci_get_pdn(npdev); + if (WARN_ON(!pdn || pdn->pe_number == IODA_INVALID_PE)) + return; + + phb = pci_bus_to_host(npdev->bus)->private_data; + + /* We only do bypass if it's enabled on the linked device */ + npe = &phb->ioda.pe_array[pdn->pe_number]; + + if (bypass) { + dev_info(&npdev->dev, + "Using 64-bit DMA iommu bypass\n"); + pnv_npu_dma_set_bypass(npe); + } else { + dev_info(&npdev->dev, "Using 32-bit DMA via iommu\n"); + pnv_npu_dma_set_32(npe); + } + } +} - if (gpe->tce_bypass_enabled) { - top = gpe->tce_bypass_base + memblock_end_of_DRAM() - 1; - bypass = (dma_mask >= top); +/* Switch ownership from platform code to external user (e.g. VFIO) */ +void pnv_npu_take_ownership(struct pnv_ioda_pe *npe) +{ + struct pnv_phb *phb = npe->phb; + int64_t rc; + + /* + * Note: NPU has just a single TVE in the hardware which means that + * while used by the kernel, it can have either 32bit window or + * DMA bypass but never both. So we deconfigure 32bit window only + * if it was enabled at the moment of ownership change. + */ + if (npe->table_group.tables[0]) { + pnv_npu_unset_window(npe, 0); + return; } - if (bypass) - dev_info(&npdev->dev, "Using 64-bit DMA iommu bypass\n"); - else - dev_info(&npdev->dev, "Using 32-bit DMA via iommu\n"); + /* Disable bypass */ + rc = opal_pci_map_pe_dma_window_real(phb->opal_id, + npe->pe_number, npe->pe_number, + 0 /* bypass base */, 0); + if (rc) { + pe_err(npe, "Failed to disable bypass, err %lld\n", rc); + return; + } + pnv_pci_ioda2_tce_invalidate_entire(npe->phb, false); +} - pnv_npu_dma_set_bypass(npe, bypass); - *npdev->dev.dma_mask = dma_mask; +struct pnv_ioda_pe *pnv_pci_npu_setup_iommu(struct pnv_ioda_pe *npe) +{ + struct pnv_phb *phb = npe->phb; + struct pci_bus *pbus = phb->hose->bus; + struct pci_dev *npdev, *gpdev = NULL, *gptmp; + struct pnv_ioda_pe *gpe = get_gpu_pci_dev_and_pe(npe, &gpdev); - return 0; + if (!gpe || !gpdev) + return NULL; + + list_for_each_entry(npdev, &pbus->devices, bus_list) { + gptmp = pnv_pci_get_gpu_dev(npdev); + + if (gptmp != gpdev) + continue; + + pe_info(gpe, "Attached NPU %s\n", dev_name(&npdev->dev)); + iommu_group_add_device(gpe->table_group.group, &npdev->dev); + } + + return gpe; } diff --git a/arch/powerpc/platforms/powernv/opal-hmi.c b/arch/powerpc/platforms/powernv/opal-hmi.c index d000f4e21981..c0a8201cb4d9 100644 --- a/arch/powerpc/platforms/powernv/opal-hmi.c +++ b/arch/powerpc/platforms/powernv/opal-hmi.c @@ -150,15 +150,17 @@ static void print_nx_checkstop_reason(const char *level, static void print_checkstop_reason(const char *level, struct OpalHMIEvent *hmi_evt) { - switch (hmi_evt->u.xstop_error.xstop_type) { + uint8_t type = hmi_evt->u.xstop_error.xstop_type; + switch (type) { case CHECKSTOP_TYPE_CORE: print_core_checkstop_reason(level, hmi_evt); break; case CHECKSTOP_TYPE_NX: print_nx_checkstop_reason(level, hmi_evt); break; - case CHECKSTOP_TYPE_UNKNOWN: - printk("%s Unknown Malfunction Alert.\n", level); + default: + printk("%s Unknown Malfunction Alert of type %d\n", + level, type); break; } } diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index c5baaf3cc4e5..3a5ea8236db8 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -48,15 +48,16 @@ #include "powernv.h" #include "pci.h" -/* 256M DMA window, 4K TCE pages, 8 bytes TCE */ -#define TCE32_TABLE_SIZE ((0x10000000 / 0x1000) * 8) +#define PNV_IODA1_M64_NUM 16 /* Number of M64 BARs */ +#define PNV_IODA1_M64_SEGS 8 /* Segments per M64 BAR */ +#define PNV_IODA1_DMA32_SEGSIZE 0x10000000 #define POWERNV_IOMMU_DEFAULT_LEVELS 1 #define POWERNV_IOMMU_MAX_LEVELS 5 static void pnv_pci_ioda2_table_free_pages(struct iommu_table *tbl); -static void pe_level_printk(const struct pnv_ioda_pe *pe, const char *level, +void pe_level_printk(const struct pnv_ioda_pe *pe, const char *level, const char *fmt, ...) { struct va_format vaf; @@ -87,13 +88,6 @@ static void pe_level_printk(const struct pnv_ioda_pe *pe, const char *level, va_end(args); } -#define pe_err(pe, fmt, ...) \ - pe_level_printk(pe, KERN_ERR, fmt, ##__VA_ARGS__) -#define pe_warn(pe, fmt, ...) \ - pe_level_printk(pe, KERN_WARNING, fmt, ##__VA_ARGS__) -#define pe_info(pe, fmt, ...) \ - pe_level_printk(pe, KERN_INFO, fmt, ##__VA_ARGS__) - static bool pnv_iommu_bypass_disabled __read_mostly; static int __init iommu_setup(char *str) @@ -122,9 +116,17 @@ static inline bool pnv_pci_is_mem_pref_64(unsigned long flags) (IORESOURCE_MEM_64 | IORESOURCE_PREFETCH)); } +static struct pnv_ioda_pe *pnv_ioda_init_pe(struct pnv_phb *phb, int pe_no) +{ + phb->ioda.pe_array[pe_no].phb = phb; + phb->ioda.pe_array[pe_no].pe_number = pe_no; + + return &phb->ioda.pe_array[pe_no]; +} + static void pnv_ioda_reserve_pe(struct pnv_phb *phb, int pe_no) { - if (!(pe_no >= 0 && pe_no < phb->ioda.total_pe)) { + if (!(pe_no >= 0 && pe_no < phb->ioda.total_pe_num)) { pr_warn("%s: Invalid PE %d on PHB#%x\n", __func__, pe_no, phb->hose->global_number); return; @@ -134,32 +136,31 @@ static void pnv_ioda_reserve_pe(struct pnv_phb *phb, int pe_no) pr_debug("%s: PE %d was reserved on PHB#%x\n", __func__, pe_no, phb->hose->global_number); - phb->ioda.pe_array[pe_no].phb = phb; - phb->ioda.pe_array[pe_no].pe_number = pe_no; + pnv_ioda_init_pe(phb, pe_no); } -static int pnv_ioda_alloc_pe(struct pnv_phb *phb) +static struct pnv_ioda_pe *pnv_ioda_alloc_pe(struct pnv_phb *phb) { unsigned long pe; do { pe = find_next_zero_bit(phb->ioda.pe_alloc, - phb->ioda.total_pe, 0); - if (pe >= phb->ioda.total_pe) - return IODA_INVALID_PE; + phb->ioda.total_pe_num, 0); + if (pe >= phb->ioda.total_pe_num) + return NULL; } while(test_and_set_bit(pe, phb->ioda.pe_alloc)); - phb->ioda.pe_array[pe].phb = phb; - phb->ioda.pe_array[pe].pe_number = pe; - return pe; + return pnv_ioda_init_pe(phb, pe); } -static void pnv_ioda_free_pe(struct pnv_phb *phb, int pe) +static void pnv_ioda_free_pe(struct pnv_ioda_pe *pe) { - WARN_ON(phb->ioda.pe_array[pe].pdev); + struct pnv_phb *phb = pe->phb; + + WARN_ON(pe->pdev); - memset(&phb->ioda.pe_array[pe], 0, sizeof(struct pnv_ioda_pe)); - clear_bit(pe, phb->ioda.pe_alloc); + memset(pe, 0, sizeof(struct pnv_ioda_pe)); + clear_bit(pe->pe_number, phb->ioda.pe_alloc); } /* The default M64 BAR is shared by all PEs */ @@ -199,13 +200,13 @@ static int pnv_ioda2_init_m64(struct pnv_phb *phb) * expected to be 0 or last one of PE capabicity. */ r = &phb->hose->mem_resources[1]; - if (phb->ioda.reserved_pe == 0) + if (phb->ioda.reserved_pe_idx == 0) r->start += phb->ioda.m64_segsize; - else if (phb->ioda.reserved_pe == (phb->ioda.total_pe - 1)) + else if (phb->ioda.reserved_pe_idx == (phb->ioda.total_pe_num - 1)) r->end -= phb->ioda.m64_segsize; else pr_warn(" Cannot strip M64 segment for reserved PE#%d\n", - phb->ioda.reserved_pe); + phb->ioda.reserved_pe_idx); return 0; @@ -219,7 +220,7 @@ fail: return -EIO; } -static void pnv_ioda2_reserve_dev_m64_pe(struct pci_dev *pdev, +static void pnv_ioda_reserve_dev_m64_pe(struct pci_dev *pdev, unsigned long *pe_bitmap) { struct pci_controller *hose = pci_bus_to_host(pdev->bus); @@ -246,22 +247,80 @@ static void pnv_ioda2_reserve_dev_m64_pe(struct pci_dev *pdev, } } -static void pnv_ioda2_reserve_m64_pe(struct pci_bus *bus, - unsigned long *pe_bitmap, - bool all) +static int pnv_ioda1_init_m64(struct pnv_phb *phb) +{ + struct resource *r; + int index; + + /* + * There are 16 M64 BARs, each of which has 8 segments. So + * there are as many M64 segments as the maximum number of + * PEs, which is 128. + */ + for (index = 0; index < PNV_IODA1_M64_NUM; index++) { + unsigned long base, segsz = phb->ioda.m64_segsize; + int64_t rc; + + base = phb->ioda.m64_base + + index * PNV_IODA1_M64_SEGS * segsz; + rc = opal_pci_set_phb_mem_window(phb->opal_id, + OPAL_M64_WINDOW_TYPE, index, base, 0, + PNV_IODA1_M64_SEGS * segsz); + if (rc != OPAL_SUCCESS) { + pr_warn(" Error %lld setting M64 PHB#%d-BAR#%d\n", + rc, phb->hose->global_number, index); + goto fail; + } + + rc = opal_pci_phb_mmio_enable(phb->opal_id, + OPAL_M64_WINDOW_TYPE, index, + OPAL_ENABLE_M64_SPLIT); + if (rc != OPAL_SUCCESS) { + pr_warn(" Error %lld enabling M64 PHB#%d-BAR#%d\n", + rc, phb->hose->global_number, index); + goto fail; + } + } + + /* + * Exclude the segment used by the reserved PE, which + * is expected to be 0 or last supported PE#. + */ + r = &phb->hose->mem_resources[1]; + if (phb->ioda.reserved_pe_idx == 0) + r->start += phb->ioda.m64_segsize; + else if (phb->ioda.reserved_pe_idx == (phb->ioda.total_pe_num - 1)) + r->end -= phb->ioda.m64_segsize; + else + WARN(1, "Wrong reserved PE#%d on PHB#%d\n", + phb->ioda.reserved_pe_idx, phb->hose->global_number); + + return 0; + +fail: + for ( ; index >= 0; index--) + opal_pci_phb_mmio_enable(phb->opal_id, + OPAL_M64_WINDOW_TYPE, index, OPAL_DISABLE_M64); + + return -EIO; +} + +static void pnv_ioda_reserve_m64_pe(struct pci_bus *bus, + unsigned long *pe_bitmap, + bool all) { struct pci_dev *pdev; list_for_each_entry(pdev, &bus->devices, bus_list) { - pnv_ioda2_reserve_dev_m64_pe(pdev, pe_bitmap); + pnv_ioda_reserve_dev_m64_pe(pdev, pe_bitmap); if (all && pdev->subordinate) - pnv_ioda2_reserve_m64_pe(pdev->subordinate, - pe_bitmap, all); + pnv_ioda_reserve_m64_pe(pdev->subordinate, + pe_bitmap, all); } } -static int pnv_ioda2_pick_m64_pe(struct pci_bus *bus, bool all) +static struct pnv_ioda_pe *pnv_ioda_pick_m64_pe(struct pci_bus *bus, bool all) { struct pci_controller *hose = pci_bus_to_host(bus); struct pnv_phb *phb = hose->private_data; @@ -271,28 +330,28 @@ static int pnv_ioda2_pick_m64_pe(struct pci_bus *bus, bool all) /* Root bus shouldn't use M64 */ if (pci_is_root_bus(bus)) - return IODA_INVALID_PE; + return NULL; /* Allocate bitmap */ - size = _ALIGN_UP(phb->ioda.total_pe / 8, sizeof(unsigned long)); + size = _ALIGN_UP(phb->ioda.total_pe_num / 8, sizeof(unsigned long)); pe_alloc = kzalloc(size, GFP_KERNEL); if (!pe_alloc) { pr_warn("%s: Out of memory !\n", __func__); - return IODA_INVALID_PE; + return NULL; } /* Figure out reserved PE numbers by the PE */ - pnv_ioda2_reserve_m64_pe(bus, pe_alloc, all); + pnv_ioda_reserve_m64_pe(bus, pe_alloc, all); /* * the current bus might not own M64 window and that's all * contributed by its child buses. For the case, we needn't * pick M64 dependent PE#. */ - if (bitmap_empty(pe_alloc, phb->ioda.total_pe)) { + if (bitmap_empty(pe_alloc, phb->ioda.total_pe_num)) { kfree(pe_alloc); - return IODA_INVALID_PE; + return NULL; } /* @@ -301,10 +360,11 @@ static int pnv_ioda2_pick_m64_pe(struct pci_bus *bus, bool all) */ master_pe = NULL; i = -1; - while ((i = find_next_bit(pe_alloc, phb->ioda.total_pe, i + 1)) < - phb->ioda.total_pe) { + while ((i = find_next_bit(pe_alloc, phb->ioda.total_pe_num, i + 1)) < + phb->ioda.total_pe_num) { pe = &phb->ioda.pe_array[i]; + phb->ioda.m64_segmap[pe->pe_number] = pe->pe_number; if (!master_pe) { pe->flags |= PNV_IODA_PE_MASTER; INIT_LIST_HEAD(&pe->slaves); @@ -314,10 +374,30 @@ static int pnv_ioda2_pick_m64_pe(struct pci_bus *bus, bool all) pe->master = master_pe; list_add_tail(&pe->list, &master_pe->slaves); } + + /* + * P7IOC supports M64DT, which helps mapping M64 segment + * to one particular PE#. However, PHB3 has fixed mapping + * between M64 segment and PE#. In order to have same logic + * for P7IOC and PHB3, we enforce fixed mapping between M64 + * segment and PE# on P7IOC. + */ + if (phb->type == PNV_PHB_IODA1) { + int64_t rc; + + rc = opal_pci_map_pe_mmio_window(phb->opal_id, + pe->pe_number, OPAL_M64_WINDOW_TYPE, + pe->pe_number / PNV_IODA1_M64_SEGS, + pe->pe_number % PNV_IODA1_M64_SEGS); + if (rc != OPAL_SUCCESS) + pr_warn("%s: Error %lld mapping M64 for PHB#%d-PE#%d\n", + __func__, rc, phb->hose->global_number, + pe->pe_number); + } } kfree(pe_alloc); - return master_pe->pe_number; + return master_pe; } static void __init pnv_ioda_parse_m64_window(struct pnv_phb *phb) @@ -328,8 +408,7 @@ static void __init pnv_ioda_parse_m64_window(struct pnv_phb *phb) const u32 *r; u64 pci_addr; - /* FIXME: Support M64 for P7IOC */ - if (phb->type != PNV_PHB_IODA2) { + if (phb->type != PNV_PHB_IODA1 && phb->type != PNV_PHB_IODA2) { pr_info(" Not support M64 window\n"); return; } @@ -355,7 +434,7 @@ static void __init pnv_ioda_parse_m64_window(struct pnv_phb *phb) hose->mem_offset[1] = res->start - pci_addr; phb->ioda.m64_size = resource_size(res); - phb->ioda.m64_segsize = phb->ioda.m64_size / phb->ioda.total_pe; + phb->ioda.m64_segsize = phb->ioda.m64_size / phb->ioda.total_pe_num; phb->ioda.m64_base = pci_addr; pr_info(" MEM64 0x%016llx..0x%016llx -> 0x%016llx\n", @@ -363,9 +442,12 @@ static void __init pnv_ioda_parse_m64_window(struct pnv_phb *phb) /* Use last M64 BAR to cover M64 window */ phb->ioda.m64_bar_idx = 15; - phb->init_m64 = pnv_ioda2_init_m64; - phb->reserve_m64_pe = pnv_ioda2_reserve_m64_pe; - phb->pick_m64_pe = pnv_ioda2_pick_m64_pe; + if (phb->type == PNV_PHB_IODA1) + phb->init_m64 = pnv_ioda1_init_m64; + else + phb->init_m64 = pnv_ioda2_init_m64; + phb->reserve_m64_pe = pnv_ioda_reserve_m64_pe; + phb->pick_m64_pe = pnv_ioda_pick_m64_pe; } static void pnv_ioda_freeze_pe(struct pnv_phb *phb, int pe_no) @@ -456,7 +538,7 @@ static int pnv_ioda_get_pe_state(struct pnv_phb *phb, int pe_no) s64 rc; /* Sanity check on PE number */ - if (pe_no < 0 || pe_no >= phb->ioda.total_pe) + if (pe_no < 0 || pe_no >= phb->ioda.total_pe_num) return OPAL_EEH_STOPPED_PERM_UNAVAIL; /* @@ -808,44 +890,6 @@ out: return 0; } -static void pnv_ioda_link_pe_by_weight(struct pnv_phb *phb, - struct pnv_ioda_pe *pe) -{ - struct pnv_ioda_pe *lpe; - - list_for_each_entry(lpe, &phb->ioda.pe_dma_list, dma_link) { - if (lpe->dma_weight < pe->dma_weight) { - list_add_tail(&pe->dma_link, &lpe->dma_link); - return; - } - } - list_add_tail(&pe->dma_link, &phb->ioda.pe_dma_list); -} - -static unsigned int pnv_ioda_dma_weight(struct pci_dev *dev) -{ - /* This is quite simplistic. The "base" weight of a device - * is 10. 0 means no DMA is to be accounted for it. - */ - - /* If it's a bridge, no DMA */ - if (dev->hdr_type != PCI_HEADER_TYPE_NORMAL) - return 0; - - /* Reduce the weight of slow USB controllers */ - if (dev->class == PCI_CLASS_SERIAL_USB_UHCI || - dev->class == PCI_CLASS_SERIAL_USB_OHCI || - dev->class == PCI_CLASS_SERIAL_USB_EHCI) - return 3; - - /* Increase the weight of RAID (includes Obsidian) */ - if ((dev->class >> 8) == PCI_CLASS_STORAGE_RAID) - return 15; - - /* Default */ - return 10; -} - #ifdef CONFIG_PCI_IOV static int pnv_pci_vf_resource_shift(struct pci_dev *dev, int offset) { @@ -919,7 +963,6 @@ static struct pnv_ioda_pe *pnv_ioda_setup_dev_PE(struct pci_dev *dev) struct pnv_phb *phb = hose->private_data; struct pci_dn *pdn = pci_get_pdn(dev); struct pnv_ioda_pe *pe; - int pe_num; if (!pdn) { pr_err("%s: Device tree node not associated properly\n", @@ -929,8 +972,8 @@ static struct pnv_ioda_pe *pnv_ioda_setup_dev_PE(struct pci_dev *dev) if (pdn->pe_number != IODA_INVALID_PE) return NULL; - pe_num = pnv_ioda_alloc_pe(phb); - if (pe_num == IODA_INVALID_PE) { + pe = pnv_ioda_alloc_pe(phb); + if (!pe) { pr_warning("%s: Not enough PE# available, disabling device\n", pci_name(dev)); return NULL; @@ -943,14 +986,12 @@ static struct pnv_ioda_pe *pnv_ioda_setup_dev_PE(struct pci_dev *dev) * * At some point we want to remove the PDN completely anyways */ - pe = &phb->ioda.pe_array[pe_num]; pci_dev_get(dev); pdn->pcidev = dev; - pdn->pe_number = pe_num; + pdn->pe_number = pe->pe_number; pe->flags = PNV_IODA_PE_DEV; pe->pdev = dev; pe->pbus = NULL; - pe->tce32_seg = -1; pe->mve_number = -1; pe->rid = dev->bus->number << 8 | pdn->devfn; @@ -958,23 +999,15 @@ static struct pnv_ioda_pe *pnv_ioda_setup_dev_PE(struct pci_dev *dev) if (pnv_ioda_configure_pe(phb, pe)) { /* XXX What do we do here ? */ - if (pe_num) - pnv_ioda_free_pe(phb, pe_num); + pnv_ioda_free_pe(pe); pdn->pe_number = IODA_INVALID_PE; pe->pdev = NULL; pci_dev_put(dev); return NULL; } - /* Assign a DMA weight to the device */ - pe->dma_weight = pnv_ioda_dma_weight(dev); - if (pe->dma_weight != 0) { - phb->ioda.dma_weight += pe->dma_weight; - phb->ioda.dma_pe_count++; - } - - /* Link the PE */ - pnv_ioda_link_pe_by_weight(phb, pe); + /* Put PE to the list */ + list_add_tail(&pe->list, &phb->ioda.pe_list); return pe; } @@ -993,7 +1026,6 @@ static void pnv_ioda_setup_same_PE(struct pci_bus *bus, struct pnv_ioda_pe *pe) } pdn->pcidev = dev; pdn->pe_number = pe->pe_number; - pe->dma_weight += pnv_ioda_dma_weight(dev); if ((pe->flags & PNV_IODA_PE_BUS_ALL) && dev->subordinate) pnv_ioda_setup_same_PE(dev->subordinate, pe); } @@ -1005,49 +1037,44 @@ static void pnv_ioda_setup_same_PE(struct pci_bus *bus, struct pnv_ioda_pe *pe) * subordinate PCI devices and buses. The second type of PE is normally * orgiriated by PCIe-to-PCI bridge or PLX switch downstream ports. */ -static void pnv_ioda_setup_bus_PE(struct pci_bus *bus, bool all) +static struct pnv_ioda_pe *pnv_ioda_setup_bus_PE(struct pci_bus *bus, bool all) { struct pci_controller *hose = pci_bus_to_host(bus); struct pnv_phb *phb = hose->private_data; - struct pnv_ioda_pe *pe; - int pe_num = IODA_INVALID_PE; + struct pnv_ioda_pe *pe = NULL; /* Check if PE is determined by M64 */ if (phb->pick_m64_pe) - pe_num = phb->pick_m64_pe(bus, all); + pe = phb->pick_m64_pe(bus, all); /* The PE number isn't pinned by M64 */ - if (pe_num == IODA_INVALID_PE) - pe_num = pnv_ioda_alloc_pe(phb); + if (!pe) + pe = pnv_ioda_alloc_pe(phb); - if (pe_num == IODA_INVALID_PE) { + if (!pe) { pr_warning("%s: Not enough PE# available for PCI bus %04x:%02x\n", __func__, pci_domain_nr(bus), bus->number); - return; + return NULL; } - pe = &phb->ioda.pe_array[pe_num]; pe->flags |= (all ? PNV_IODA_PE_BUS_ALL : PNV_IODA_PE_BUS); pe->pbus = bus; pe->pdev = NULL; - pe->tce32_seg = -1; pe->mve_number = -1; pe->rid = bus->busn_res.start << 8; - pe->dma_weight = 0; if (all) pe_info(pe, "Secondary bus %d..%d associated with PE#%d\n", - bus->busn_res.start, bus->busn_res.end, pe_num); + bus->busn_res.start, bus->busn_res.end, pe->pe_number); else pe_info(pe, "Secondary bus %d associated with PE#%d\n", - bus->busn_res.start, pe_num); + bus->busn_res.start, pe->pe_number); if (pnv_ioda_configure_pe(phb, pe)) { /* XXX What do we do here ? */ - if (pe_num) - pnv_ioda_free_pe(phb, pe_num); + pnv_ioda_free_pe(pe); pe->pbus = NULL; - return; + return NULL; } /* Associate it with all child devices */ @@ -1056,16 +1083,7 @@ static void pnv_ioda_setup_bus_PE(struct pci_bus *bus, bool all) /* Put PE to the list */ list_add_tail(&pe->list, &phb->ioda.pe_list); - /* Account for one DMA PE if at least one DMA capable device exist - * below the bridge - */ - if (pe->dma_weight != 0) { - phb->ioda.dma_weight += pe->dma_weight; - phb->ioda.dma_pe_count++; - } - - /* Link the PE */ - pnv_ioda_link_pe_by_weight(phb, pe); + return pe; } static struct pnv_ioda_pe *pnv_ioda_setup_npu_PE(struct pci_dev *npu_pdev) @@ -1088,7 +1106,7 @@ static struct pnv_ioda_pe *pnv_ioda_setup_npu_PE(struct pci_dev *npu_pdev) * same GPU get assigned the same PE. */ gpu_pdev = pnv_pci_get_gpu_dev(npu_pdev); - for (pe_num = 0; pe_num < phb->ioda.total_pe; pe_num++) { + for (pe_num = 0; pe_num < phb->ioda.total_pe_num; pe_num++) { pe = &phb->ioda.pe_array[pe_num]; if (!pe->pdev) continue; @@ -1106,7 +1124,6 @@ static struct pnv_ioda_pe *pnv_ioda_setup_npu_PE(struct pci_dev *npu_pdev) rid = npu_pdev->bus->number << 8 | npu_pdn->devfn; npu_pdn->pcidev = npu_pdev; npu_pdn->pe_number = pe_num; - pe->dma_weight += pnv_ioda_dma_weight(npu_pdev); phb->ioda.pe_rmap[rid] = pe->pe_number; /* Map the PE to this link */ @@ -1378,7 +1395,7 @@ static void pnv_ioda_release_vf_PE(struct pci_dev *pdev) pnv_ioda_deconfigure_pe(phb, pe); - pnv_ioda_free_pe(phb, pe->pe_number); + pnv_ioda_free_pe(pe); } } @@ -1387,6 +1404,7 @@ void pnv_pci_sriov_disable(struct pci_dev *pdev) struct pci_bus *bus; struct pci_controller *hose; struct pnv_phb *phb; + struct pnv_ioda_pe *pe; struct pci_dn *pdn; struct pci_sriov *iov; u16 num_vfs, i; @@ -1411,8 +1429,11 @@ void pnv_pci_sriov_disable(struct pci_dev *pdev) /* Release PE numbers */ if (pdn->m64_single_mode) { for (i = 0; i < num_vfs; i++) { - if (pdn->pe_num_map[i] != IODA_INVALID_PE) - pnv_ioda_free_pe(phb, pdn->pe_num_map[i]); + if (pdn->pe_num_map[i] == IODA_INVALID_PE) + continue; + + pe = &phb->ioda.pe_array[pdn->pe_num_map[i]]; + pnv_ioda_free_pe(pe); } } else bitmap_clear(phb->ioda.pe_alloc, *pdn->pe_num_map, num_vfs); @@ -1454,7 +1475,6 @@ static void pnv_ioda_setup_vf_PE(struct pci_dev *pdev, u16 num_vfs) pe->flags = PNV_IODA_PE_VF; pe->pbus = NULL; pe->parent_dev = pdev; - pe->tce32_seg = -1; pe->mve_number = -1; pe->rid = (pci_iov_virtfn_bus(pdev, vf_index) << 8) | pci_iov_virtfn_devfn(pdev, vf_index); @@ -1466,8 +1486,7 @@ static void pnv_ioda_setup_vf_PE(struct pci_dev *pdev, u16 num_vfs) if (pnv_ioda_configure_pe(phb, pe)) { /* XXX What do we do here ? */ - if (pe_num) - pnv_ioda_free_pe(phb, pe_num); + pnv_ioda_free_pe(pe); pe->pdev = NULL; continue; } @@ -1486,6 +1505,7 @@ int pnv_pci_sriov_enable(struct pci_dev *pdev, u16 num_vfs) struct pci_bus *bus; struct pci_controller *hose; struct pnv_phb *phb; + struct pnv_ioda_pe *pe; struct pci_dn *pdn; int ret; u16 i; @@ -1528,18 +1548,20 @@ int pnv_pci_sriov_enable(struct pci_dev *pdev, u16 num_vfs) /* Calculate available PE for required VFs */ if (pdn->m64_single_mode) { for (i = 0; i < num_vfs; i++) { - pdn->pe_num_map[i] = pnv_ioda_alloc_pe(phb); - if (pdn->pe_num_map[i] == IODA_INVALID_PE) { + pe = pnv_ioda_alloc_pe(phb); + if (!pe) { ret = -EBUSY; goto m64_failed; } + + pdn->pe_num_map[i] = pe->pe_number; } } else { mutex_lock(&phb->ioda.pe_alloc_mutex); *pdn->pe_num_map = bitmap_find_next_zero_area( - phb->ioda.pe_alloc, phb->ioda.total_pe, + phb->ioda.pe_alloc, phb->ioda.total_pe_num, 0, num_vfs, 0); - if (*pdn->pe_num_map >= phb->ioda.total_pe) { + if (*pdn->pe_num_map >= phb->ioda.total_pe_num) { mutex_unlock(&phb->ioda.pe_alloc_mutex); dev_info(&pdev->dev, "Failed to enable VF%d\n", num_vfs); kfree(pdn->pe_num_map); @@ -1577,8 +1599,11 @@ int pnv_pci_sriov_enable(struct pci_dev *pdev, u16 num_vfs) m64_failed: if (pdn->m64_single_mode) { for (i = 0; i < num_vfs; i++) { - if (pdn->pe_num_map[i] != IODA_INVALID_PE) - pnv_ioda_free_pe(phb, pdn->pe_num_map[i]); + if (pdn->pe_num_map[i] == IODA_INVALID_PE) + continue; + + pe = &phb->ioda.pe_array[pdn->pe_num_map[i]]; + pnv_ioda_free_pe(pe); } } else bitmap_clear(phb->ioda.pe_alloc, *pdn->pe_num_map, num_vfs); @@ -1640,8 +1665,6 @@ static int pnv_pci_ioda_dma_set_mask(struct pci_dev *pdev, u64 dma_mask) struct pnv_ioda_pe *pe; uint64_t top; bool bypass = false; - struct pci_dev *linked_npu_dev; - int i; if (WARN_ON(!pdn || pdn->pe_number == IODA_INVALID_PE)) return -ENODEV;; @@ -1662,15 +1685,7 @@ static int pnv_pci_ioda_dma_set_mask(struct pci_dev *pdev, u64 dma_mask) *pdev->dev.dma_mask = dma_mask; /* Update peer npu devices */ - if (pe->flags & PNV_IODA_PE_PEER) - for (i = 0; i < PNV_IODA_MAX_PEER_PES; i++) { - if (!pe->peers[i]) - continue; - - linked_npu_dev = pe->peers[i]->pdev; - if (dma_get_mask(&linked_npu_dev->dev) != dma_mask) - dma_set_mask(&linked_npu_dev->dev, dma_mask); - } + pnv_npu_try_dma_set_bypass(pdev, bypass); return 0; } @@ -1811,28 +1826,34 @@ static struct iommu_table_ops pnv_ioda1_iommu_ops = { .get = pnv_tce_get, }; -static inline void pnv_pci_ioda2_tce_invalidate_entire(struct pnv_ioda_pe *pe) +#define TCE_KILL_INVAL_ALL PPC_BIT(0) +#define TCE_KILL_INVAL_PE PPC_BIT(1) +#define TCE_KILL_INVAL_TCE PPC_BIT(2) + +void pnv_pci_ioda2_tce_invalidate_entire(struct pnv_phb *phb, bool rm) +{ + const unsigned long val = TCE_KILL_INVAL_ALL; + + mb(); /* Ensure previous TCE table stores are visible */ + if (rm) + __raw_rm_writeq(cpu_to_be64(val), + (__be64 __iomem *) + phb->ioda.tce_inval_reg_phys); + else + __raw_writeq(cpu_to_be64(val), phb->ioda.tce_inval_reg); +} + +static inline void pnv_pci_ioda2_tce_invalidate_pe(struct pnv_ioda_pe *pe) { /* 01xb - invalidate TCEs that match the specified PE# */ - unsigned long val = (0x4ull << 60) | (pe->pe_number & 0xFF); + unsigned long val = TCE_KILL_INVAL_PE | (pe->pe_number & 0xFF); struct pnv_phb *phb = pe->phb; - struct pnv_ioda_pe *npe; - int i; if (!phb->ioda.tce_inval_reg) return; mb(); /* Ensure above stores are visible */ __raw_writeq(cpu_to_be64(val), phb->ioda.tce_inval_reg); - - if (pe->flags & PNV_IODA_PE_PEER) - for (i = 0; i < PNV_IODA_MAX_PEER_PES; i++) { - npe = pe->peers[i]; - if (!npe || npe->phb->type != PNV_PHB_NPU) - continue; - - pnv_npu_tce_invalidate_entire(npe); - } } static void pnv_pci_ioda2_do_tce_invalidate(unsigned pe_number, bool rm, @@ -1842,7 +1863,7 @@ static void pnv_pci_ioda2_do_tce_invalidate(unsigned pe_number, bool rm, unsigned long start, end, inc; /* We'll invalidate DMA address in PE scope */ - start = 0x2ull << 60; + start = TCE_KILL_INVAL_TCE; start |= (pe_number & 0xFF); end = start; @@ -1867,28 +1888,24 @@ static void pnv_pci_ioda2_tce_invalidate(struct iommu_table *tbl, struct iommu_table_group_link *tgl; list_for_each_entry_rcu(tgl, &tbl->it_group_list, next) { - struct pnv_ioda_pe *npe; struct pnv_ioda_pe *pe = container_of(tgl->table_group, struct pnv_ioda_pe, table_group); __be64 __iomem *invalidate = rm ? (__be64 __iomem *)pe->phb->ioda.tce_inval_reg_phys : pe->phb->ioda.tce_inval_reg; - int i; + if (pe->phb->type == PNV_PHB_NPU) { + /* + * The NVLink hardware does not support TCE kill + * per TCE entry so we have to invalidate + * the entire cache for it. + */ + pnv_pci_ioda2_tce_invalidate_entire(pe->phb, rm); + continue; + } pnv_pci_ioda2_do_tce_invalidate(pe->pe_number, rm, invalidate, tbl->it_page_shift, index, npages); - - if (pe->flags & PNV_IODA_PE_PEER) - /* Invalidate PEs using the same TCE table */ - for (i = 0; i < PNV_IODA_MAX_PEER_PES; i++) { - npe = pe->peers[i]; - if (!npe || npe->phb->type != PNV_PHB_NPU) - continue; - - pnv_npu_tce_invalidate(npe, tbl, index, - npages, rm); - } } } @@ -1945,56 +1962,140 @@ static struct iommu_table_ops pnv_ioda2_iommu_ops = { .free = pnv_ioda2_table_free, }; -static void pnv_pci_ioda_setup_dma_pe(struct pnv_phb *phb, - struct pnv_ioda_pe *pe, unsigned int base, - unsigned int segs) +static int pnv_pci_ioda_dev_dma_weight(struct pci_dev *dev, void *data) +{ + unsigned int *weight = (unsigned int *)data; + + /* This is quite simplistic. The "base" weight of a device + * is 10. 0 means no DMA is to be accounted for it. + */ + if (dev->hdr_type != PCI_HEADER_TYPE_NORMAL) + return 0; + + if (dev->class == PCI_CLASS_SERIAL_USB_UHCI || + dev->class == PCI_CLASS_SERIAL_USB_OHCI || + dev->class == PCI_CLASS_SERIAL_USB_EHCI) + *weight += 3; + else if ((dev->class >> 8) == PCI_CLASS_STORAGE_RAID) + *weight += 15; + else + *weight += 10; + + return 0; +} + +static unsigned int pnv_pci_ioda_pe_dma_weight(struct pnv_ioda_pe *pe) +{ + unsigned int weight = 0; + + /* SRIOV VF has same DMA32 weight as its PF */ +#ifdef CONFIG_PCI_IOV + if ((pe->flags & PNV_IODA_PE_VF) && pe->parent_dev) { + pnv_pci_ioda_dev_dma_weight(pe->parent_dev, &weight); + return weight; + } +#endif + + if ((pe->flags & PNV_IODA_PE_DEV) && pe->pdev) { + pnv_pci_ioda_dev_dma_weight(pe->pdev, &weight); + } else if ((pe->flags & PNV_IODA_PE_BUS) && pe->pbus) { + struct pci_dev *pdev; + + list_for_each_entry(pdev, &pe->pbus->devices, bus_list) + pnv_pci_ioda_dev_dma_weight(pdev, &weight); + } else if ((pe->flags & PNV_IODA_PE_BUS_ALL) && pe->pbus) { + pci_walk_bus(pe->pbus, pnv_pci_ioda_dev_dma_weight, &weight); + } + + return weight; +} + +static void pnv_pci_ioda1_setup_dma_pe(struct pnv_phb *phb, + struct pnv_ioda_pe *pe) { struct page *tce_mem = NULL; struct iommu_table *tbl; - unsigned int i; + unsigned int weight, total_weight = 0; + unsigned int tce32_segsz, base, segs, avail, i; int64_t rc; void *addr; /* XXX FIXME: Handle 64-bit only DMA devices */ /* XXX FIXME: Provide 64-bit DMA facilities & non-4K TCE tables etc.. */ /* XXX FIXME: Allocate multi-level tables on PHB3 */ + weight = pnv_pci_ioda_pe_dma_weight(pe); + if (!weight) + return; - /* We shouldn't already have a 32-bit DMA associated */ - if (WARN_ON(pe->tce32_seg >= 0)) + pci_walk_bus(phb->hose->bus, pnv_pci_ioda_dev_dma_weight, + &total_weight); + segs = (weight * phb->ioda.dma32_count) / total_weight; + if (!segs) + segs = 1; + + /* + * Allocate contiguous DMA32 segments. We begin with the expected + * number of segments. With one more attempt, the number of DMA32 + * segments to be allocated is decreased by one until one segment + * is allocated successfully. + */ + do { + for (base = 0; base <= phb->ioda.dma32_count - segs; base++) { + for (avail = 0, i = base; i < base + segs; i++) { + if (phb->ioda.dma32_segmap[i] == + IODA_INVALID_PE) + avail++; + } + + if (avail == segs) + goto found; + } + } while (--segs); + + if (!segs) { + pe_warn(pe, "No available DMA32 segments\n"); return; + } +found: tbl = pnv_pci_table_alloc(phb->hose->node); iommu_register_group(&pe->table_group, phb->hose->global_number, pe->pe_number); pnv_pci_link_table_and_group(phb->hose->node, 0, tbl, &pe->table_group); /* Grab a 32-bit TCE table */ - pe->tce32_seg = base; + pe_info(pe, "DMA weight %d (%d), assigned (%d) %d DMA32 segments\n", + weight, total_weight, base, segs); pe_info(pe, " Setting up 32-bit TCE table at %08x..%08x\n", - (base << 28), ((base + segs) << 28) - 1); + base * PNV_IODA1_DMA32_SEGSIZE, + (base + segs) * PNV_IODA1_DMA32_SEGSIZE - 1); /* XXX Currently, we allocate one big contiguous table for the * TCEs. We only really need one chunk per 256M of TCE space * (ie per segment) but that's an optimization for later, it * requires some added smarts with our get/put_tce implementation + * + * Each TCE page is 4KB in size and each TCE entry occupies 8 + * bytes */ + tce32_segsz = PNV_IODA1_DMA32_SEGSIZE >> (IOMMU_PAGE_SHIFT_4K - 3); tce_mem = alloc_pages_node(phb->hose->node, GFP_KERNEL, - get_order(TCE32_TABLE_SIZE * segs)); + get_order(tce32_segsz * segs)); if (!tce_mem) { pe_err(pe, " Failed to allocate a 32-bit TCE memory\n"); goto fail; } addr = page_address(tce_mem); - memset(addr, 0, TCE32_TABLE_SIZE * segs); + memset(addr, 0, tce32_segsz * segs); /* Configure HW */ for (i = 0; i < segs; i++) { rc = opal_pci_map_pe_dma_window(phb->opal_id, pe->pe_number, base + i, 1, - __pa(addr) + TCE32_TABLE_SIZE * i, - TCE32_TABLE_SIZE, 0x1000); + __pa(addr) + tce32_segsz * i, + tce32_segsz, IOMMU_PAGE_SIZE_4K); if (rc) { pe_err(pe, " Failed to configure 32-bit TCE table," " err %ld\n", rc); @@ -2002,9 +2103,14 @@ static void pnv_pci_ioda_setup_dma_pe(struct pnv_phb *phb, } } + /* Setup DMA32 segment mapping */ + for (i = base; i < base + segs; i++) + phb->ioda.dma32_segmap[i] = pe->pe_number; + /* Setup linux iommu table */ - pnv_pci_setup_iommu_table(tbl, addr, TCE32_TABLE_SIZE * segs, - base << 28, IOMMU_PAGE_SHIFT_4K); + pnv_pci_setup_iommu_table(tbl, addr, tce32_segsz * segs, + base * PNV_IODA1_DMA32_SEGSIZE, + IOMMU_PAGE_SHIFT_4K); /* OPAL variant of P7IOC SW invalidated TCEs */ if (phb->ioda.tce_inval_reg) @@ -2031,10 +2137,8 @@ static void pnv_pci_ioda_setup_dma_pe(struct pnv_phb *phb, return; fail: /* XXX Failure: Try to fallback to 64-bit only ? */ - if (pe->tce32_seg >= 0) - pe->tce32_seg = -1; if (tce_mem) - __free_pages(tce_mem, get_order(TCE32_TABLE_SIZE * segs)); + __free_pages(tce_mem, get_order(tce32_segsz * segs)); if (tbl) { pnv_pci_unlink_table_and_group(tbl, &pe->table_group); iommu_free_table(tbl, "pnv"); @@ -2075,7 +2179,7 @@ static long pnv_pci_ioda2_set_window(struct iommu_table_group *table_group, pnv_pci_link_table_and_group(phb->hose->node, num, tbl, &pe->table_group); - pnv_pci_ioda2_tce_invalidate_entire(pe); + pnv_pci_ioda2_tce_invalidate_pe(pe); return 0; } @@ -2219,7 +2323,7 @@ static long pnv_pci_ioda2_unset_window(struct iommu_table_group *table_group, if (ret) pe_warn(pe, "Unmapping failed, ret = %ld\n", ret); else - pnv_pci_ioda2_tce_invalidate_entire(pe); + pnv_pci_ioda2_tce_invalidate_pe(pe); pnv_pci_unlink_table_and_group(table_group->tables[num], table_group); @@ -2288,6 +2392,116 @@ static struct iommu_table_group_ops pnv_pci_ioda2_ops = { .take_ownership = pnv_ioda2_take_ownership, .release_ownership = pnv_ioda2_release_ownership, }; + +static int gpe_table_group_to_npe_cb(struct device *dev, void *opaque) +{ + struct pci_controller *hose; + struct pnv_phb *phb; + struct pnv_ioda_pe **ptmppe = opaque; + struct pci_dev *pdev = container_of(dev, struct pci_dev, dev); + struct pci_dn *pdn = pci_get_pdn(pdev); + + if (!pdn || pdn->pe_number == IODA_INVALID_PE) + return 0; + + hose = pci_bus_to_host(pdev->bus); + phb = hose->private_data; + if (phb->type != PNV_PHB_NPU) + return 0; + + *ptmppe = &phb->ioda.pe_array[pdn->pe_number]; + + return 1; +} + +/* + * This returns PE of associated NPU. + * This assumes that NPU is in the same IOMMU group with GPU and there is + * no other PEs. + */ +static struct pnv_ioda_pe *gpe_table_group_to_npe( + struct iommu_table_group *table_group) +{ + struct pnv_ioda_pe *npe = NULL; + int ret = iommu_group_for_each_dev(table_group->group, &npe, + gpe_table_group_to_npe_cb); + + BUG_ON(!ret || !npe); + + return npe; +} + +static long pnv_pci_ioda2_npu_set_window(struct iommu_table_group *table_group, + int num, struct iommu_table *tbl) +{ + long ret = pnv_pci_ioda2_set_window(table_group, num, tbl); + + if (ret) + return ret; + + ret = pnv_npu_set_window(gpe_table_group_to_npe(table_group), num, tbl); + if (ret) + pnv_pci_ioda2_unset_window(table_group, num); + + return ret; +} + +static long pnv_pci_ioda2_npu_unset_window( + struct iommu_table_group *table_group, + int num) +{ + long ret = pnv_pci_ioda2_unset_window(table_group, num); + + if (ret) + return ret; + + return pnv_npu_unset_window(gpe_table_group_to_npe(table_group), num); +} + +static void pnv_ioda2_npu_take_ownership(struct iommu_table_group *table_group) +{ + /* + * Detach NPU first as pnv_ioda2_take_ownership() will destroy + * the iommu_table if 32bit DMA is enabled. + */ + pnv_npu_take_ownership(gpe_table_group_to_npe(table_group)); + pnv_ioda2_take_ownership(table_group); +} + +static struct iommu_table_group_ops pnv_pci_ioda2_npu_ops = { + .get_table_size = pnv_pci_ioda2_get_table_size, + .create_table = pnv_pci_ioda2_create_table, + .set_window = pnv_pci_ioda2_npu_set_window, + .unset_window = pnv_pci_ioda2_npu_unset_window, + .take_ownership = pnv_ioda2_npu_take_ownership, + .release_ownership = pnv_ioda2_release_ownership, +}; + +static void pnv_pci_ioda_setup_iommu_api(void) +{ + struct pci_controller *hose, *tmp; + struct pnv_phb *phb; + struct pnv_ioda_pe *pe, *gpe; + + /* + * Now we have all PHBs discovered, time to add NPU devices to + * the corresponding IOMMU groups. + */ + list_for_each_entry_safe(hose, tmp, &hose_list, list_node) { + phb = hose->private_data; + + if (phb->type != PNV_PHB_NPU) + continue; + + list_for_each_entry(pe, &phb->ioda.pe_list, list) { + gpe = pnv_pci_npu_setup_iommu(pe); + if (gpe) + gpe->table_group.ops = &pnv_pci_ioda2_npu_ops; + } + } +} +#else /* !CONFIG_IOMMU_API */ +static void pnv_pci_ioda_setup_iommu_api(void) { }; #endif static void pnv_pci_ioda_setup_opal_tce_kill(struct pnv_phb *phb) @@ -2443,10 +2657,6 @@ static void pnv_pci_ioda2_setup_dma_pe(struct pnv_phb *phb, { int64_t rc; - /* We shouldn't already have a 32-bit DMA associated */ - if (WARN_ON(pe->tce32_seg >= 0)) - return; - /* TVE #1 is selected by PCI address bit 59 */ pe->tce_bypass_base = 1ull << 59; @@ -2454,7 +2664,6 @@ static void pnv_pci_ioda2_setup_dma_pe(struct pnv_phb *phb, pe->pe_number); /* The PE will reserve all possible 32-bits space */ - pe->tce32_seg = 0; pe_info(pe, "Setting up 32-bit TCE table at 0..%08x\n", phb->ioda.m32_pci_base); @@ -2470,11 +2679,8 @@ static void pnv_pci_ioda2_setup_dma_pe(struct pnv_phb *phb, #endif rc = pnv_pci_ioda2_setup_default_config(pe); - if (rc) { - if (pe->tce32_seg >= 0) - pe->tce32_seg = -1; + if (rc) return; - } if (pe->flags & PNV_IODA_PE_DEV) iommu_add_device(&pe->pdev->dev); @@ -2485,47 +2691,24 @@ static void pnv_pci_ioda2_setup_dma_pe(struct pnv_phb *phb, static void pnv_ioda_setup_dma(struct pnv_phb *phb) { struct pci_controller *hose = phb->hose; - unsigned int residual, remaining, segs, tw, base; struct pnv_ioda_pe *pe; + unsigned int weight; /* If we have more PE# than segments available, hand out one * per PE until we run out and let the rest fail. If not, * then we assign at least one segment per PE, plus more based * on the amount of devices under that PE */ - if (phb->ioda.dma_pe_count > phb->ioda.tce32_count) - residual = 0; - else - residual = phb->ioda.tce32_count - - phb->ioda.dma_pe_count; - - pr_info("PCI: Domain %04x has %ld available 32-bit DMA segments\n", - hose->global_number, phb->ioda.tce32_count); - pr_info("PCI: %d PE# for a total weight of %d\n", - phb->ioda.dma_pe_count, phb->ioda.dma_weight); + pr_info("PCI: Domain %04x has %d available 32-bit DMA segments\n", + hose->global_number, phb->ioda.dma32_count); pnv_pci_ioda_setup_opal_tce_kill(phb); - /* Walk our PE list and configure their DMA segments, hand them - * out one base segment plus any residual segments based on - * weight - */ - remaining = phb->ioda.tce32_count; - tw = phb->ioda.dma_weight; - base = 0; - list_for_each_entry(pe, &phb->ioda.pe_dma_list, dma_link) { - if (!pe->dma_weight) - continue; - if (!remaining) { - pe_warn(pe, "No DMA32 resources available\n"); + /* Walk our PE list and configure their DMA segments */ + list_for_each_entry(pe, &phb->ioda.pe_list, list) { + weight = pnv_pci_ioda_pe_dma_weight(pe); + if (!weight) continue; - } - segs = 1; - if (residual) { - segs += ((pe->dma_weight * residual) + (tw / 2)) / tw; - if (segs > remaining) - segs = remaining; - } /* * For IODA2 compliant PHB3, we needn't care about the weight. @@ -2533,12 +2716,9 @@ static void pnv_ioda_setup_dma(struct pnv_phb *phb) * the specific PE. */ if (phb->type == PNV_PHB_IODA1) { - pe_info(pe, "DMA weight %d, assigned %d DMA32 segments\n", - pe->dma_weight, segs); - pnv_pci_ioda_setup_dma_pe(phb, pe, base, segs); + pnv_pci_ioda1_setup_dma_pe(phb, pe); } else if (phb->type == PNV_PHB_IODA2) { pe_info(pe, "Assign DMA32 space\n"); - segs = 0; pnv_pci_ioda2_setup_dma_pe(phb, pe); } else if (phb->type == PNV_PHB_NPU) { /* @@ -2548,9 +2728,6 @@ static void pnv_ioda_setup_dma(struct pnv_phb *phb) * as the PHB3 TVT. */ } - - remaining -= segs; - base += segs; } } @@ -2858,7 +3035,7 @@ static void pnv_pci_ioda_fixup_iov_resources(struct pci_dev *pdev) pdn->m64_single_mode = false; total_vfs = pci_sriov_get_totalvfs(pdev); - mul = phb->ioda.total_pe; + mul = phb->ioda.total_pe_num; total_vf_bar_sz = 0; for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) { @@ -2929,19 +3106,72 @@ truncate_iov: } #endif /* CONFIG_PCI_IOV */ +static void pnv_ioda_setup_pe_res(struct pnv_ioda_pe *pe, + struct resource *res) +{ + struct pnv_phb *phb = pe->phb; + struct pci_bus_region region; + int index; + int64_t rc; + + if (!res || !res->flags || res->start > res->end) + return; + + if (res->flags & IORESOURCE_IO) { + region.start = res->start - phb->ioda.io_pci_base; + region.end = res->end - phb->ioda.io_pci_base; + index = region.start / phb->ioda.io_segsize; + + while (index < phb->ioda.total_pe_num && + region.start <= region.end) { + phb->ioda.io_segmap[index] = pe->pe_number; + rc = opal_pci_map_pe_mmio_window(phb->opal_id, + pe->pe_number, OPAL_IO_WINDOW_TYPE, 0, index); + if (rc != OPAL_SUCCESS) { + pr_err("%s: Error %lld mapping IO segment#%d to PE#%d\n", + __func__, rc, index, pe->pe_number); + break; + } + + region.start += phb->ioda.io_segsize; + index++; + } + } else if ((res->flags & IORESOURCE_MEM) && + !pnv_pci_is_mem_pref_64(res->flags)) { + region.start = res->start - + phb->hose->mem_offset[0] - + phb->ioda.m32_pci_base; + region.end = res->end - + phb->hose->mem_offset[0] - + phb->ioda.m32_pci_base; + index = region.start / phb->ioda.m32_segsize; + + while (index < phb->ioda.total_pe_num && + region.start <= region.end) { + phb->ioda.m32_segmap[index] = pe->pe_number; + rc = opal_pci_map_pe_mmio_window(phb->opal_id, + pe->pe_number, OPAL_M32_WINDOW_TYPE, 0, index); + if (rc != OPAL_SUCCESS) { + pr_err("%s: Error %lld mapping M32 segment#%d to PE#%d", + __func__, rc, index, pe->pe_number); + break; + } + + region.start += phb->ioda.m32_segsize; + index++; + } + } +} + /* * This function is supposed to be called on basis of PE from top * to bottom style. So the the I/O or MMIO segment assigned to * parent PE could be overrided by its child PEs if necessary. */ -static void pnv_ioda_setup_pe_seg(struct pci_controller *hose, - struct pnv_ioda_pe *pe) +static void pnv_ioda_setup_pe_seg(struct pnv_ioda_pe *pe) { - struct pnv_phb *phb = hose->private_data; - struct pci_bus_region region; - struct resource *res; - int i, index; - int rc; + struct pci_dev *pdev; + int i; /* * NOTE: We only care PCI bus based PE for now. For PCI @@ -2950,57 +3180,20 @@ static void pnv_ioda_setup_pe_seg(struct pci_controller *hose, */ BUG_ON(!(pe->flags & (PNV_IODA_PE_BUS | PNV_IODA_PE_BUS_ALL))); - pci_bus_for_each_resource(pe->pbus, res, i) { - if (!res || !res->flags || - res->start > res->end) - continue; + list_for_each_entry(pdev, &pe->pbus->devices, bus_list) { + for (i = 0; i <= PCI_ROM_RESOURCE; i++) + pnv_ioda_setup_pe_res(pe, &pdev->resource[i]); - if (res->flags & IORESOURCE_IO) { - region.start = res->start - phb->ioda.io_pci_base; - region.end = res->end - phb->ioda.io_pci_base; - index = region.start / phb->ioda.io_segsize; - - while (index < phb->ioda.total_pe && - region.start <= region.end) { - phb->ioda.io_segmap[index] = pe->pe_number; - rc = opal_pci_map_pe_mmio_window(phb->opal_id, - pe->pe_number, OPAL_IO_WINDOW_TYPE, 0, index); - if (rc != OPAL_SUCCESS) { - pr_err("%s: OPAL error %d when mapping IO " - "segment #%d to PE#%d\n", - __func__, rc, index, pe->pe_number); - break; - } - - region.start += phb->ioda.io_segsize; - index++; - } - } else if ((res->flags & IORESOURCE_MEM) && - !pnv_pci_is_mem_pref_64(res->flags)) { - region.start = res->start - - hose->mem_offset[0] - - phb->ioda.m32_pci_base; - region.end = res->end - - hose->mem_offset[0] - - phb->ioda.m32_pci_base; - index = region.start / phb->ioda.m32_segsize; - - while (index < phb->ioda.total_pe && - region.start <= region.end) { - phb->ioda.m32_segmap[index] = pe->pe_number; - rc = opal_pci_map_pe_mmio_window(phb->opal_id, - pe->pe_number, OPAL_M32_WINDOW_TYPE, 0, index); - if (rc != OPAL_SUCCESS) { - pr_err("%s: OPAL error %d when mapping M32 " - "segment#%d to PE#%d", - __func__, rc, index, pe->pe_number); - break; - } - - region.start += phb->ioda.m32_segsize; - index++; - } - } + /* + * If the PE contains all subordinate PCI buses, the + * windows of the child bridges should be mapped to + * the PE as well. + */ + if (!(pe->flags & PNV_IODA_PE_BUS_ALL) || !pci_is_bridge(pdev)) + continue; + for (i = 0; i < PCI_BRIDGE_RESOURCE_NUM; i++) + pnv_ioda_setup_pe_res(pe, + &pdev->resource[PCI_BRIDGE_RESOURCES + i]); } } @@ -3018,7 +3211,7 @@ static void pnv_pci_ioda_setup_seg(void) continue; list_for_each_entry(pe, &phb->ioda.pe_list, list) { - pnv_ioda_setup_pe_seg(hose, pe); + pnv_ioda_setup_pe_seg(pe); } } } @@ -3035,6 +3228,8 @@ static void pnv_pci_ioda_setup_DMA(void) phb = hose->private_data; phb->initialized = 1; } + + pnv_pci_ioda_setup_iommu_api(); } static void pnv_pci_ioda_create_dbgfs(void) @@ -3056,27 +3251,6 @@ static void pnv_pci_ioda_create_dbgfs(void) #endif /* CONFIG_DEBUG_FS */ } -static void pnv_npu_ioda_fixup(void) -{ - bool enable_bypass; - struct pci_controller *hose, *tmp; - struct pnv_phb *phb; - struct pnv_ioda_pe *pe; - - list_for_each_entry_safe(hose, tmp, &hose_list, list_node) { - phb = hose->private_data; - if (phb->type != PNV_PHB_NPU) - continue; - - list_for_each_entry(pe, &phb->ioda.pe_dma_list, dma_link) { - enable_bypass = dma_get_mask(&pe->pdev->dev) == - DMA_BIT_MASK(64); - pnv_npu_init_dma_pe(pe); - pnv_npu_dma_set_bypass(pe, enable_bypass); - } - } -} - static void pnv_pci_ioda_fixup(void) { pnv_pci_ioda_setup_PEs(); @@ -3089,9 +3263,6 @@ static void pnv_pci_ioda_fixup(void) eeh_init(); eeh_addr_cache_build(); #endif - - /* Link NPU IODA tables to their PCI devices. */ - pnv_npu_ioda_fixup(); } /* @@ -3195,12 +3366,6 @@ static bool pnv_pci_enable_device_hook(struct pci_dev *dev) return true; } -static u32 pnv_ioda_bdfn_to_pe(struct pnv_phb *phb, struct pci_bus *bus, - u32 devfn) -{ - return phb->ioda.pe_rmap[(bus->number << 8) | devfn]; -} - static void pnv_pci_ioda_shutdown(struct pci_controller *hose) { struct pnv_phb *phb = hose->private_data; @@ -3210,31 +3375,39 @@ static void pnv_pci_ioda_shutdown(struct pci_controller *hose) } static const struct pci_controller_ops pnv_pci_ioda_controller_ops = { - .dma_dev_setup = pnv_pci_dma_dev_setup, - .dma_bus_setup = pnv_pci_dma_bus_setup, + .dma_dev_setup = pnv_pci_dma_dev_setup, + .dma_bus_setup = pnv_pci_dma_bus_setup, #ifdef CONFIG_PCI_MSI - .setup_msi_irqs = pnv_setup_msi_irqs, - .teardown_msi_irqs = pnv_teardown_msi_irqs, + .setup_msi_irqs = pnv_setup_msi_irqs, + .teardown_msi_irqs = pnv_teardown_msi_irqs, #endif - .enable_device_hook = pnv_pci_enable_device_hook, - .window_alignment = pnv_pci_window_alignment, - .reset_secondary_bus = pnv_pci_reset_secondary_bus, - .dma_set_mask = pnv_pci_ioda_dma_set_mask, - .dma_get_required_mask = pnv_pci_ioda_dma_get_required_mask, - .shutdown = pnv_pci_ioda_shutdown, + .enable_device_hook = pnv_pci_enable_device_hook, + .window_alignment = pnv_pci_window_alignment, + .reset_secondary_bus = pnv_pci_reset_secondary_bus, + .dma_set_mask = pnv_pci_ioda_dma_set_mask, + .dma_get_required_mask = pnv_pci_ioda_dma_get_required_mask, + .shutdown = pnv_pci_ioda_shutdown, }; +static int pnv_npu_dma_set_mask(struct pci_dev *npdev, u64 dma_mask) +{ + dev_err_once(&npdev->dev, + "%s operation unsupported for NVLink devices\n", + __func__); + return -EPERM; +} + static const struct pci_controller_ops pnv_npu_ioda_controller_ops = { - .dma_dev_setup = pnv_pci_dma_dev_setup, + .dma_dev_setup = pnv_pci_dma_dev_setup, #ifdef CONFIG_PCI_MSI - .setup_msi_irqs = pnv_setup_msi_irqs, - .teardown_msi_irqs = pnv_teardown_msi_irqs, + .setup_msi_irqs = pnv_setup_msi_irqs, + .teardown_msi_irqs = pnv_teardown_msi_irqs, #endif - .enable_device_hook = pnv_pci_enable_device_hook, - .window_alignment = pnv_pci_window_alignment, - .reset_secondary_bus = pnv_pci_reset_secondary_bus, - .dma_set_mask = pnv_npu_dma_set_mask, - .shutdown = pnv_pci_ioda_shutdown, + .enable_device_hook = pnv_pci_enable_device_hook, + .window_alignment = pnv_pci_window_alignment, + .reset_secondary_bus = pnv_pci_reset_secondary_bus, + .dma_set_mask = pnv_npu_dma_set_mask, + .shutdown = pnv_pci_ioda_shutdown, }; static void __init pnv_pci_init_ioda_phb(struct device_node *np, @@ -3242,10 +3415,12 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np, { struct pci_controller *hose; struct pnv_phb *phb; - unsigned long size, m32map_off, pemap_off, iomap_off = 0; + unsigned long size, m64map_off, m32map_off, pemap_off; + unsigned long iomap_off = 0, dma32map_off = 0; const __be64 *prop64; const __be32 *prop32; int len; + unsigned int segno; u64 phb_id; void *aux; long rc; @@ -3306,13 +3481,13 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np, pr_err(" Failed to map registers !\n"); /* Initialize more IODA stuff */ - phb->ioda.total_pe = 1; + phb->ioda.total_pe_num = 1; prop32 = of_get_property(np, "ibm,opal-num-pes", NULL); if (prop32) - phb->ioda.total_pe = be32_to_cpup(prop32); + phb->ioda.total_pe_num = be32_to_cpup(prop32); prop32 = of_get_property(np, "ibm,opal-reserved-pe", NULL); if (prop32) - phb->ioda.reserved_pe = be32_to_cpup(prop32); + phb->ioda.reserved_pe_idx = be32_to_cpup(prop32); /* Parse 64-bit MMIO range */ pnv_ioda_parse_m64_window(phb); @@ -3321,36 +3496,58 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np, /* FW Has already off top 64k of M32 space (MSI space) */ phb->ioda.m32_size += 0x10000; - phb->ioda.m32_segsize = phb->ioda.m32_size / phb->ioda.total_pe; + phb->ioda.m32_segsize = phb->ioda.m32_size / phb->ioda.total_pe_num; phb->ioda.m32_pci_base = hose->mem_resources[0].start - hose->mem_offset[0]; phb->ioda.io_size = hose->pci_io_size; - phb->ioda.io_segsize = phb->ioda.io_size / phb->ioda.total_pe; + phb->ioda.io_segsize = phb->ioda.io_size / phb->ioda.total_pe_num; phb->ioda.io_pci_base = 0; /* XXX calculate this ? */ + /* Calculate how many 32-bit TCE segments we have */ + phb->ioda.dma32_count = phb->ioda.m32_pci_base / + PNV_IODA1_DMA32_SEGSIZE; + /* Allocate aux data & arrays. We don't have IO ports on PHB3 */ - size = _ALIGN_UP(phb->ioda.total_pe / 8, sizeof(unsigned long)); + size = _ALIGN_UP(max_t(unsigned, phb->ioda.total_pe_num, 8) / 8, + sizeof(unsigned long)); + m64map_off = size; + size += phb->ioda.total_pe_num * sizeof(phb->ioda.m64_segmap[0]); m32map_off = size; - size += phb->ioda.total_pe * sizeof(phb->ioda.m32_segmap[0]); + size += phb->ioda.total_pe_num * sizeof(phb->ioda.m32_segmap[0]); if (phb->type == PNV_PHB_IODA1) { iomap_off = size; - size += phb->ioda.total_pe * sizeof(phb->ioda.io_segmap[0]); + size += phb->ioda.total_pe_num * sizeof(phb->ioda.io_segmap[0]); + dma32map_off = size; + size += phb->ioda.dma32_count * + sizeof(phb->ioda.dma32_segmap[0]); } pemap_off = size; - size += phb->ioda.total_pe * sizeof(struct pnv_ioda_pe); + size += phb->ioda.total_pe_num * sizeof(struct pnv_ioda_pe); aux = memblock_virt_alloc(size, 0); phb->ioda.pe_alloc = aux; + phb->ioda.m64_segmap = aux + m64map_off; phb->ioda.m32_segmap = aux + m32map_off; - if (phb->type == PNV_PHB_IODA1) + for (segno = 0; segno < phb->ioda.total_pe_num; segno++) { + phb->ioda.m64_segmap[segno] = IODA_INVALID_PE; + phb->ioda.m32_segmap[segno] = IODA_INVALID_PE; + } + if (phb->type == PNV_PHB_IODA1) { phb->ioda.io_segmap = aux + iomap_off; + for (segno = 0; segno < phb->ioda.total_pe_num; segno++) + phb->ioda.io_segmap[segno] = IODA_INVALID_PE; + + phb->ioda.dma32_segmap = aux + dma32map_off; + for (segno = 0; segno < phb->ioda.dma32_count; segno++) + phb->ioda.dma32_segmap[segno] = IODA_INVALID_PE; + } phb->ioda.pe_array = aux + pemap_off; - set_bit(phb->ioda.reserved_pe, phb->ioda.pe_alloc); + set_bit(phb->ioda.reserved_pe_idx, phb->ioda.pe_alloc); - INIT_LIST_HEAD(&phb->ioda.pe_dma_list); INIT_LIST_HEAD(&phb->ioda.pe_list); mutex_init(&phb->ioda.pe_list_mutex); /* Calculate how many 32-bit TCE segments we have */ - phb->ioda.tce32_count = phb->ioda.m32_pci_base >> 28; + phb->ioda.dma32_count = phb->ioda.m32_pci_base / + PNV_IODA1_DMA32_SEGSIZE; #if 0 /* We should really do that ... */ rc = opal_pci_set_phb_mem_window(opal->phb_id, @@ -3362,7 +3559,7 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np, #endif pr_info(" %03d (%03d) PE's M32: 0x%x [segment=0x%x]\n", - phb->ioda.total_pe, phb->ioda.reserved_pe, + phb->ioda.total_pe_num, phb->ioda.reserved_pe_idx, phb->ioda.m32_size, phb->ioda.m32_segsize); if (phb->ioda.m64_size) pr_info(" M64: 0x%lx [segment=0x%lx]\n", @@ -3377,12 +3574,6 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np, phb->freeze_pe = pnv_ioda_freeze_pe; phb->unfreeze_pe = pnv_ioda_unfreeze_pe; - /* Setup RID -> PE mapping function */ - phb->bdfn_to_pe = pnv_ioda_bdfn_to_pe; - - /* Setup TCEs */ - phb->dma_dev_setup = pnv_pci_ioda_dma_dev_setup; - /* Setup MSI support */ pnv_pci_init_ioda_msis(phb); @@ -3395,10 +3586,12 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np, */ ppc_md.pcibios_fixup = pnv_pci_ioda_fixup; - if (phb->type == PNV_PHB_NPU) + if (phb->type == PNV_PHB_NPU) { hose->controller_ops = pnv_npu_ioda_controller_ops; - else + } else { + phb->dma_dev_setup = pnv_pci_ioda_dma_dev_setup; hose->controller_ops = pnv_pci_ioda_controller_ops; + } #ifdef CONFIG_PCI_IOV ppc_md.pcibios_fixup_sriov = pnv_pci_ioda_fixup_iov_resources; diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c index 73c8dc2a353f..1d92bd93bcd9 100644 --- a/arch/powerpc/platforms/powernv/pci.c +++ b/arch/powerpc/platforms/powernv/pci.c @@ -39,9 +39,6 @@ /* Delay in usec */ #define PCI_RESET_DELAY_US 3000000 -#define cfg_dbg(fmt...) do { } while(0) -//#define cfg_dbg(fmt...) printk(fmt) - #ifdef CONFIG_PCI_MSI int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type) { @@ -370,7 +367,7 @@ static void pnv_pci_config_check_eeh(struct pci_dn *pdn) struct pnv_phb *phb = pdn->phb->private_data; u8 fstate; __be16 pcierr; - int pe_no; + unsigned int pe_no; s64 rc; /* @@ -380,7 +377,7 @@ static void pnv_pci_config_check_eeh(struct pci_dn *pdn) */ pe_no = pdn->pe_number; if (pe_no == IODA_INVALID_PE) { - pe_no = phb->ioda.reserved_pe; + pe_no = phb->ioda.reserved_pe_idx; } /* @@ -402,8 +399,8 @@ static void pnv_pci_config_check_eeh(struct pci_dn *pdn) } } - cfg_dbg(" -> EEH check, bdfn=%04x PE#%d fstate=%x\n", - (pdn->busno << 8) | (pdn->devfn), pe_no, fstate); + pr_devel(" -> EEH check, bdfn=%04x PE#%d fstate=%x\n", + (pdn->busno << 8) | (pdn->devfn), pe_no, fstate); /* Clear the frozen state if applicable */ if (fstate == OPAL_EEH_STOPPED_MMIO_FREEZE || @@ -451,8 +448,8 @@ int pnv_pci_cfg_read(struct pci_dn *pdn, return PCIBIOS_FUNC_NOT_SUPPORTED; } - cfg_dbg("%s: bus: %x devfn: %x +%x/%x -> %08x\n", - __func__, pdn->busno, pdn->devfn, where, size, *val); + pr_devel("%s: bus: %x devfn: %x +%x/%x -> %08x\n", + __func__, pdn->busno, pdn->devfn, where, size, *val); return PCIBIOS_SUCCESSFUL; } @@ -462,8 +459,8 @@ int pnv_pci_cfg_write(struct pci_dn *pdn, struct pnv_phb *phb = pdn->phb->private_data; u32 bdfn = (pdn->busno << 8) | pdn->devfn; - cfg_dbg("%s: bus: %x devfn: %x +%x/%x -> %08x\n", - pdn->busno, pdn->devfn, where, size, val); + pr_devel("%s: bus: %x devfn: %x +%x/%x -> %08x\n", + __func__, pdn->busno, pdn->devfn, where, size, val); switch (size) { case 1: opal_pci_config_write_byte(phb->opal_id, bdfn, where, val); diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h index 3f814f382b2e..7dee25e304db 100644 --- a/arch/powerpc/platforms/powernv/pci.h +++ b/arch/powerpc/platforms/powernv/pci.h @@ -24,7 +24,6 @@ enum pnv_phb_model { #define PNV_IODA_PE_MASTER (1 << 3) /* Master PE in compound case */ #define PNV_IODA_PE_SLAVE (1 << 4) /* Slave PE in compound case */ #define PNV_IODA_PE_VF (1 << 5) /* PE for one VF */ -#define PNV_IODA_PE_PEER (1 << 6) /* PE has peers */ /* Data associated with a PE, including IOMMU tracking etc.. */ struct pnv_phb; @@ -32,9 +31,6 @@ struct pnv_ioda_pe { unsigned long flags; struct pnv_phb *phb; -#define PNV_IODA_MAX_PEER_PES 8 - struct pnv_ioda_pe *peers[PNV_IODA_MAX_PEER_PES]; - /* A PE can be associated with a single device or an * entire bus (& children). In the former case, pdev * is populated, in the later case, pbus is. @@ -53,14 +49,7 @@ struct pnv_ioda_pe { /* PE number */ unsigned int pe_number; - /* "Weight" assigned to the PE for the sake of DMA resource - * allocations - */ - unsigned int dma_weight; - /* "Base" iommu table, ie, 4K TCEs, 32-bit DMA */ - int tce32_seg; - int tce32_segcount; struct iommu_table_group table_group; /* 64-bit TCE bypass region */ @@ -78,7 +67,6 @@ struct pnv_ioda_pe { struct list_head slaves; /* Link in list of PE#s */ - struct list_head dma_link; struct list_head list; }; @@ -110,19 +98,18 @@ struct pnv_phb { unsigned int is_64, struct msi_msg *msg); void (*dma_dev_setup)(struct pnv_phb *phb, struct pci_dev *pdev); void (*fixup_phb)(struct pci_controller *hose); - u32 (*bdfn_to_pe)(struct pnv_phb *phb, struct pci_bus *bus, u32 devfn); int (*init_m64)(struct pnv_phb *phb); void (*reserve_m64_pe)(struct pci_bus *bus, unsigned long *pe_bitmap, bool all); - int (*pick_m64_pe)(struct pci_bus *bus, bool all); + struct pnv_ioda_pe *(*pick_m64_pe)(struct pci_bus *bus, bool all); int (*get_pe_state)(struct pnv_phb *phb, int pe_no); void (*freeze_pe)(struct pnv_phb *phb, int pe_no); int (*unfreeze_pe)(struct pnv_phb *phb, int pe_no, int opt); struct { /* Global bridge info */ - unsigned int total_pe; - unsigned int reserved_pe; + unsigned int total_pe_num; + unsigned int reserved_pe_idx; /* 32-bit MMIO window */ unsigned int m32_size; @@ -141,15 +128,19 @@ struct pnv_phb { unsigned int io_segsize; unsigned int io_pci_base; - /* PE allocation bitmap */ - unsigned long *pe_alloc; - /* PE allocation mutex */ + /* PE allocation */ struct mutex pe_alloc_mutex; + unsigned long *pe_alloc; + struct pnv_ioda_pe *pe_array; /* M32 & IO segment maps */ + unsigned int *m64_segmap; unsigned int *m32_segmap; unsigned int *io_segmap; - struct pnv_ioda_pe *pe_array; + + /* DMA32 segment maps - IODA1 only */ + unsigned int dma32_count; + unsigned int *dma32_segmap; /* IRQ chip */ int irq_chip_init; @@ -167,20 +158,6 @@ struct pnv_phb { */ unsigned char pe_rmap[0x10000]; - /* 32-bit TCE tables allocation */ - unsigned long tce32_count; - - /* Total "weight" for the sake of DMA resources - * allocation - */ - unsigned int dma_weight; - unsigned int dma_pe_count; - - /* Sorted list of used PE's, sorted at - * boot for resource allocation purposes - */ - struct list_head pe_dma_list; - /* TCE cache invalidate registers (physical and * remapped) */ @@ -236,16 +213,23 @@ extern void pnv_pci_dma_bus_setup(struct pci_bus *bus); extern int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type); extern void pnv_teardown_msi_irqs(struct pci_dev *pdev); +extern void pe_level_printk(const struct pnv_ioda_pe *pe, const char *level, + const char *fmt, ...); +#define pe_err(pe, fmt, ...) \ + pe_level_printk(pe, KERN_ERR, fmt, ##__VA_ARGS__) +#define pe_warn(pe, fmt, ...) \ + pe_level_printk(pe, KERN_WARNING, fmt, ##__VA_ARGS__) +#define pe_info(pe, fmt, ...) \ + pe_level_printk(pe, KERN_INFO, fmt, ##__VA_ARGS__) + /* Nvlink functions */ -extern void pnv_npu_tce_invalidate_entire(struct pnv_ioda_pe *npe); -extern void pnv_npu_tce_invalidate(struct pnv_ioda_pe *npe, - struct iommu_table *tbl, - unsigned long index, - unsigned long npages, - bool rm); -extern void pnv_npu_init_dma_pe(struct pnv_ioda_pe *npe); -extern void pnv_npu_setup_dma_pe(struct pnv_ioda_pe *npe); -extern int pnv_npu_dma_set_bypass(struct pnv_ioda_pe *npe, bool enabled); -extern int pnv_npu_dma_set_mask(struct pci_dev *npdev, u64 dma_mask); +extern void pnv_npu_try_dma_set_bypass(struct pci_dev *gpdev, bool bypass); +extern void pnv_pci_ioda2_tce_invalidate_entire(struct pnv_phb *phb, bool rm); +extern struct pnv_ioda_pe *pnv_pci_npu_setup_iommu(struct pnv_ioda_pe *npe); +extern long pnv_npu_set_window(struct pnv_ioda_pe *npe, int num, + struct iommu_table *tbl); +extern long pnv_npu_unset_window(struct pnv_ioda_pe *npe, int num); +extern void pnv_npu_take_ownership(struct pnv_ioda_pe *npe); +extern void pnv_npu_release_ownership(struct pnv_ioda_pe *npe); #endif /* __POWERNV_PCI_H */ diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c index 1acb0c72d923..ee6430bedcc3 100644 --- a/arch/powerpc/platforms/powernv/setup.c +++ b/arch/powerpc/platforms/powernv/setup.c @@ -273,7 +273,10 @@ static int __init pnv_probe(void) if (!of_flat_dt_is_compatible(root, "ibm,powernv")) return 0; - hpte_init_native(); + if (IS_ENABLED(CONFIG_PPC_RADIX_MMU) && radix_enabled()) + radix_init_native(); + else if (IS_ENABLED(CONFIG_PPC_STD_MMU_64)) + hpte_init_native(); if (firmware_has_feature(FW_FEATURE_OPAL)) pnv_setup_machdep_opal(); diff --git a/arch/powerpc/platforms/ps3/htab.c b/arch/powerpc/platforms/ps3/htab.c index 2f95d33cf34a..c9a3e677192a 100644 --- a/arch/powerpc/platforms/ps3/htab.c +++ b/arch/powerpc/platforms/ps3/htab.c @@ -63,7 +63,7 @@ static long ps3_hpte_insert(unsigned long hpte_group, unsigned long vpn, vflags &= ~HPTE_V_SECONDARY; hpte_v = hpte_encode_v(vpn, psize, apsize, ssize) | vflags | HPTE_V_VALID; - hpte_r = hpte_encode_r(ps3_mm_phys_to_lpar(pa), psize, apsize) | rflags; + hpte_r = hpte_encode_r(ps3_mm_phys_to_lpar(pa), psize, apsize, ssize) | rflags; spin_lock_irqsave(&ps3_htab_lock, flags); diff --git a/arch/powerpc/platforms/ps3/spu.c b/arch/powerpc/platforms/ps3/spu.c index a0bca05e26b0..492b2575e0d2 100644 --- a/arch/powerpc/platforms/ps3/spu.c +++ b/arch/powerpc/platforms/ps3/spu.c @@ -205,7 +205,7 @@ static void spu_unmap(struct spu *spu) static int __init setup_areas(struct spu *spu) { struct table {char* name; unsigned long addr; unsigned long size;}; - static const unsigned long shadow_flags = _PAGE_NO_CACHE | 3; + unsigned long shadow_flags = pgprot_val(pgprot_noncached_wc(PAGE_KERNEL_RO)); spu_pdata(spu)->shadow = __ioremap(spu_pdata(spu)->shadow_addr, sizeof(struct spe_shadow), @@ -216,7 +216,7 @@ static int __init setup_areas(struct spu *spu) } spu->local_store = (__force void *)ioremap_prot(spu->local_store_phys, - LS_SIZE, _PAGE_NO_CACHE); + LS_SIZE, pgprot_val(pgprot_noncached_wc(__pgprot(0)))); if (!spu->local_store) { pr_debug("%s:%d: ioremap local_store failed\n", diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c index e9ff44cd5d86..2ce138542083 100644 --- a/arch/powerpc/platforms/pseries/hotplug-memory.c +++ b/arch/powerpc/platforms/pseries/hotplug-memory.c @@ -116,6 +116,155 @@ static struct property *dlpar_clone_drconf_property(struct device_node *dn) return new_prop; } +static void dlpar_update_drconf_property(struct device_node *dn, + struct property *prop) +{ + struct of_drconf_cell *lmbs; + u32 num_lmbs, *p; + int i; + + /* Convert the property back to BE */ + p = prop->value; + num_lmbs = *p; + *p = cpu_to_be32(*p); + p++; + + lmbs = (struct of_drconf_cell *)p; + for (i = 0; i < num_lmbs; i++) { + lmbs[i].base_addr = cpu_to_be64(lmbs[i].base_addr); + lmbs[i].drc_index = cpu_to_be32(lmbs[i].drc_index); + lmbs[i].flags = cpu_to_be32(lmbs[i].flags); + } + + rtas_hp_event = true; + of_update_property(dn, prop); + rtas_hp_event = false; +} + +static int dlpar_update_device_tree_lmb(struct of_drconf_cell *lmb) +{ + struct device_node *dn; + struct property *prop; + struct of_drconf_cell *lmbs; + u32 *p, num_lmbs; + int i; + + dn = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory"); + if (!dn) + return -ENODEV; + + prop = dlpar_clone_drconf_property(dn); + if (!prop) { + of_node_put(dn); + return -ENODEV; + } + + p = prop->value; + num_lmbs = *p++; + lmbs = (struct of_drconf_cell *)p; + + for (i = 0; i < num_lmbs; i++) { + if (lmbs[i].drc_index == lmb->drc_index) { + lmbs[i].flags = lmb->flags; + lmbs[i].aa_index = lmb->aa_index; + + dlpar_update_drconf_property(dn, prop); + break; + } + } + + of_node_put(dn); + return 0; +} + +static u32 lookup_lmb_associativity_index(struct of_drconf_cell *lmb) +{ + struct device_node *parent, *lmb_node, *dr_node; + const u32 *lmb_assoc; + const u32 *assoc_arrays; + u32 aa_index; + int aa_arrays, aa_array_entries, aa_array_sz; + int i; + + parent = of_find_node_by_path("/"); + if (!parent) + return -ENODEV; + + lmb_node = dlpar_configure_connector(cpu_to_be32(lmb->drc_index), + parent); + of_node_put(parent); + if (!lmb_node) + return -EINVAL; + + lmb_assoc = of_get_property(lmb_node, "ibm,associativity", NULL); + if (!lmb_assoc) { + dlpar_free_cc_nodes(lmb_node); + return -ENODEV; + } + + dr_node = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory"); + if (!dr_node) { + dlpar_free_cc_nodes(lmb_node); + return -ENODEV; + } + + assoc_arrays = of_get_property(dr_node, + "ibm,associativity-lookup-arrays", + NULL); + of_node_put(dr_node); + if (!assoc_arrays) { + dlpar_free_cc_nodes(lmb_node); + return -ENODEV; + } + + /* The ibm,associativity-lookup-arrays property is defined to be + * a 32-bit value specifying the number of associativity arrays + * followed by a 32-bitvalue specifying the number of entries per + * array, followed by the associativity arrays. + */ + aa_arrays = be32_to_cpu(assoc_arrays[0]); + aa_array_entries = be32_to_cpu(assoc_arrays[1]); + aa_array_sz = aa_array_entries * sizeof(u32); + + aa_index = -1; + for (i = 0; i < aa_arrays; i++) { + int indx = (i * aa_array_entries) + 2; + + if (memcmp(&assoc_arrays[indx], &lmb_assoc[1], aa_array_sz)) + continue; + + aa_index = i; + break; + } + + dlpar_free_cc_nodes(lmb_node); + return aa_index; +} + +static int dlpar_add_device_tree_lmb(struct of_drconf_cell *lmb) +{ + int aa_index; + + lmb->flags |= DRCONF_MEM_ASSIGNED; + + aa_index = lookup_lmb_associativity_index(lmb); + if (aa_index < 0) { + pr_err("Couldn't find associativity index for drc index %x\n", + lmb->drc_index); + return aa_index; + } + + lmb->aa_index = aa_index; + return dlpar_update_device_tree_lmb(lmb); +} + +static int dlpar_remove_device_tree_lmb(struct of_drconf_cell *lmb) +{ + lmb->flags &= ~DRCONF_MEM_ASSIGNED; + lmb->aa_index = 0xffffffff; + return dlpar_update_device_tree_lmb(lmb); +} + static struct memory_block *lmb_to_memblock(struct of_drconf_cell *lmb) { unsigned long section_nr; @@ -243,8 +392,8 @@ static int dlpar_remove_lmb(struct of_drconf_cell *lmb) memblock_remove(lmb->base_addr, block_sz); dlpar_release_drc(lmb->drc_index); + dlpar_remove_device_tree_lmb(lmb); - lmb->flags &= ~DRCONF_MEM_ASSIGNED; return 0; } @@ -384,43 +533,32 @@ static int dlpar_memory_remove_by_index(u32 drc_index, struct property *prop) #endif /* CONFIG_MEMORY_HOTREMOVE */ -static int dlpar_add_lmb(struct of_drconf_cell *lmb) +static int dlpar_add_lmb_memory(struct of_drconf_cell *lmb) { struct memory_block *mem_block; unsigned long block_sz; int nid, rc; - if (lmb->flags & DRCONF_MEM_ASSIGNED) - return -EINVAL; - block_sz = memory_block_size_bytes(); - rc = dlpar_acquire_drc(lmb->drc_index); - if (rc) - return rc; - /* Find the node id for this address */ nid = memory_add_physaddr_to_nid(lmb->base_addr); /* Add the memory */ rc = add_memory(nid, lmb->base_addr, block_sz); - if (rc) { - dlpar_release_drc(lmb->drc_index); + if (rc) return rc; - } /* Register this block of memory */ rc = memblock_add(lmb->base_addr, block_sz); if (rc) { remove_memory(nid, lmb->base_addr, block_sz); - dlpar_release_drc(lmb->drc_index); return rc; } mem_block = lmb_to_memblock(lmb); if (!mem_block) { remove_memory(nid, lmb->base_addr, block_sz); - dlpar_release_drc(lmb->drc_index); return -EINVAL; } @@ -428,7 +566,6 @@ static int dlpar_add_lmb(struct of_drconf_cell *lmb) put_device(&mem_block->dev); if (rc) { remove_memory(nid, lmb->base_addr, block_sz); - dlpar_release_drc(lmb->drc_index); return rc; } @@ -436,6 +573,34 @@ static int dlpar_add_lmb(struct of_drconf_cell *lmb) return 0; } +static int dlpar_add_lmb(struct of_drconf_cell *lmb) +{ + int rc; + + if (lmb->flags & DRCONF_MEM_ASSIGNED) + return -EINVAL; + + rc = dlpar_acquire_drc(lmb->drc_index); + if (rc) + return rc; + + rc = dlpar_add_device_tree_lmb(lmb); + if (rc) { + pr_err("Couldn't update device tree for drc index %x\n", + lmb->drc_index); + dlpar_release_drc(lmb->drc_index); + return rc; + } + + rc = dlpar_add_lmb_memory(lmb); + if (rc) { + dlpar_remove_device_tree_lmb(lmb); + dlpar_release_drc(lmb->drc_index); + } + + return rc; +} + static int dlpar_memory_add_by_count(u32 lmbs_to_add, struct property *prop) { struct of_drconf_cell *lmbs; @@ -536,31 +701,6 @@ static int dlpar_memory_add_by_index(u32 drc_index, struct property *prop) return rc; } -static void dlpar_update_drconf_property(struct device_node *dn, - struct property *prop) -{ - struct of_drconf_cell *lmbs; - u32 num_lmbs, *p; - int i; - - /* Convert the property back to BE */ - p = prop->value; - num_lmbs = *p; - *p = cpu_to_be32(*p); - p++; - - lmbs = (struct of_drconf_cell *)p; - for (i = 0; i < num_lmbs; i++) { - lmbs[i].base_addr = cpu_to_be64(lmbs[i].base_addr); - lmbs[i].drc_index = cpu_to_be32(lmbs[i].drc_index); - lmbs[i].flags = cpu_to_be32(lmbs[i].flags); - } - - rtas_hp_event = true; - of_update_property(dn, prop); - rtas_hp_event = false; -} - int dlpar_memory(struct pseries_hp_errorlog *hp_elog) { struct device_node *dn; @@ -608,10 +748,7 @@ int dlpar_memory(struct pseries_hp_errorlog *hp_elog) break; } - if (rc) - dlpar_free_drconf_property(prop); - else - dlpar_update_drconf_property(dn, prop); + dlpar_free_drconf_property(prop); dlpar_memory_out: of_node_put(dn); diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c index bd98ce2be17b..b7dfc1359d01 100644 --- a/arch/powerpc/platforms/pseries/iommu.c +++ b/arch/powerpc/platforms/pseries/iommu.c @@ -912,7 +912,8 @@ machine_arch_initcall(pseries, find_existing_ddw_windows); static int query_ddw(struct pci_dev *dev, const u32 *ddw_avail, struct ddw_query_response *query) { - struct eeh_dev *edev; + struct device_node *dn; + struct pci_dn *pdn; u32 cfg_addr; u64 buid; int ret; @@ -923,11 +924,10 @@ static int query_ddw(struct pci_dev *dev, const u32 *ddw_avail, * Retrieve them from the pci device, not the node with the * dma-window property */ - edev = pci_dev_to_eeh_dev(dev); - cfg_addr = edev->config_addr; - if (edev->pe_config_addr) - cfg_addr = edev->pe_config_addr; - buid = edev->phb->buid; + dn = pci_device_to_OF_node(dev); + pdn = PCI_DN(dn); + buid = pdn->phb->buid; + cfg_addr = (pdn->busno << 8) | pdn->devfn; ret = rtas_call(ddw_avail[0], 3, 5, (u32 *)query, cfg_addr, BUID_HI(buid), BUID_LO(buid)); @@ -941,7 +941,8 @@ static int create_ddw(struct pci_dev *dev, const u32 *ddw_avail, struct ddw_create_response *create, int page_shift, int window_shift) { - struct eeh_dev *edev; + struct device_node *dn; + struct pci_dn *pdn; u32 cfg_addr; u64 buid; int ret; @@ -952,11 +953,10 @@ static int create_ddw(struct pci_dev *dev, const u32 *ddw_avail, * Retrieve them from the pci device, not the node with the * dma-window property */ - edev = pci_dev_to_eeh_dev(dev); - cfg_addr = edev->config_addr; - if (edev->pe_config_addr) - cfg_addr = edev->pe_config_addr; - buid = edev->phb->buid; + dn = pci_device_to_OF_node(dev); + pdn = PCI_DN(dn); + buid = pdn->phb->buid; + cfg_addr = (pdn->busno << 8) | pdn->devfn; do { /* extra outputs are LIOBN and dma-addr (hi, lo) */ diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index 2415a0d31f8f..7f6100d91b4b 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -89,18 +89,21 @@ void vpa_init(int cpu) "%lx failed with %ld\n", cpu, hwcpu, addr, ret); return; } + +#ifdef CONFIG_PPC_STD_MMU_64 /* * PAPR says this feature is SLB-Buffer but firmware never * reports that. All SPLPAR support SLB shadow buffer. */ - addr = __pa(paca[cpu].slb_shadow_ptr); - if (firmware_has_feature(FW_FEATURE_SPLPAR)) { + if (!radix_enabled() && firmware_has_feature(FW_FEATURE_SPLPAR)) { + addr = __pa(paca[cpu].slb_shadow_ptr); ret = register_slb_shadow(hwcpu, addr); if (ret) pr_err("WARNING: SLB shadow buffer registration for " "cpu %d (hw %d) of area %lx failed with %ld\n", cpu, hwcpu, addr, ret); } +#endif /* CONFIG_PPC_STD_MMU_64 */ /* * Register dispatch trace log, if one has been allocated. @@ -123,6 +126,8 @@ void vpa_init(int cpu) } } +#ifdef CONFIG_PPC_STD_MMU_64 + static long pSeries_lpar_hpte_insert(unsigned long hpte_group, unsigned long vpn, unsigned long pa, unsigned long rflags, unsigned long vflags, @@ -139,7 +144,7 @@ static long pSeries_lpar_hpte_insert(unsigned long hpte_group, hpte_group, vpn, pa, rflags, vflags, psize); hpte_v = hpte_encode_v(vpn, psize, apsize, ssize) | vflags | HPTE_V_VALID; - hpte_r = hpte_encode_r(pa, psize, apsize) | rflags; + hpte_r = hpte_encode_r(pa, psize, apsize, ssize) | rflags; if (!(vflags & HPTE_V_BOLTED)) pr_devel(" hpte_v=%016lx, hpte_r=%016lx\n", hpte_v, hpte_r); @@ -152,10 +157,6 @@ static long pSeries_lpar_hpte_insert(unsigned long hpte_group, /* Exact = 0 */ flags = 0; - /* Make pHyp happy */ - if ((rflags & _PAGE_NO_CACHE) && !(rflags & _PAGE_WRITETHRU)) - hpte_r &= ~HPTE_R_M; - if (firmware_has_feature(FW_FEATURE_XCMO) && !(hpte_r & HPTE_R_N)) flags |= H_COALESCE_CAND; @@ -659,6 +660,8 @@ static void pSeries_set_page_state(struct page *page, int order, void arch_free_page(struct page *page, int order) { + if (radix_enabled()) + return; if (!cmo_free_hint_flag || !firmware_has_feature(FW_FEATURE_CMO)) return; @@ -666,7 +669,8 @@ void arch_free_page(struct page *page, int order) } EXPORT_SYMBOL(arch_free_page); -#endif +#endif /* CONFIG_PPC_SMLPAR */ +#endif /* CONFIG_PPC_STD_MMU_64 */ #ifdef CONFIG_TRACEPOINTS #ifdef HAVE_JUMP_LABEL diff --git a/arch/powerpc/platforms/pseries/lparcfg.c b/arch/powerpc/platforms/pseries/lparcfg.c index c9fecf09b8fa..afa05a2cb702 100644 --- a/arch/powerpc/platforms/pseries/lparcfg.c +++ b/arch/powerpc/platforms/pseries/lparcfg.c @@ -484,8 +484,9 @@ static int pseries_lparcfg_data(struct seq_file *m, void *v) seq_printf(m, "shared_processor_mode=%d\n", lppaca_shared_proc(get_lppaca())); +#ifdef CONFIG_PPC_STD_MMU_64 seq_printf(m, "slb_size=%d\n", mmu_slb_size); - +#endif parse_em_data(m); return 0; diff --git a/arch/powerpc/platforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c index ceb18d349459..a560a98bcf3b 100644 --- a/arch/powerpc/platforms/pseries/mobility.c +++ b/arch/powerpc/platforms/pseries/mobility.c @@ -191,8 +191,8 @@ static int update_dt_node(__be32 phandle, s32 scope) break; case 0x80000000: - prop = of_find_property(dn, prop_name, NULL); - of_remove_property(dn, prop); + of_remove_property(dn, of_find_property(dn, + prop_name, NULL)); prop = NULL; break; diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platforms/pseries/msi.c index 272e9ec1ab54..543a6386f3eb 100644 --- a/arch/powerpc/platforms/pseries/msi.c +++ b/arch/powerpc/platforms/pseries/msi.c @@ -305,7 +305,7 @@ static int msi_quota_for_device(struct pci_dev *dev, int request) memset(&counts, 0, sizeof(struct msi_counts)); /* Work out how many devices we have below this PE */ - traverse_pci_devices(pe_dn, count_non_bridge_devices, &counts); + pci_traverse_device_nodes(pe_dn, count_non_bridge_devices, &counts); if (counts.num_devices == 0) { pr_err("rtas_msi: found 0 devices under PE for %s\n", @@ -320,7 +320,7 @@ static int msi_quota_for_device(struct pci_dev *dev, int request) /* else, we have some more calculating to do */ counts.requestor = pci_device_to_OF_node(dev); counts.request = request; - traverse_pci_devices(pe_dn, count_spare_msis, &counts); + pci_traverse_device_nodes(pe_dn, count_spare_msis, &counts); /* If the quota isn't an integer multiple of the total, we can * use the remainder as spare MSIs for anyone that wants them. */ diff --git a/arch/powerpc/platforms/pseries/pci_dlpar.c b/arch/powerpc/platforms/pseries/pci_dlpar.c index 5d4a3df59d0c..906dbaa97fe2 100644 --- a/arch/powerpc/platforms/pseries/pci_dlpar.c +++ b/arch/powerpc/platforms/pseries/pci_dlpar.c @@ -34,38 +34,6 @@ #include "pseries.h" -static struct pci_bus * -find_bus_among_children(struct pci_bus *bus, - struct device_node *dn) -{ - struct pci_bus *child = NULL; - struct pci_bus *tmp; - struct device_node *busdn; - - busdn = pci_bus_to_OF_node(bus); - if (busdn == dn) - return bus; - - list_for_each_entry(tmp, &bus->children, node) { - child = find_bus_among_children(tmp, dn); - if (child) - break; - }; - return child; -} - -struct pci_bus * -pcibios_find_pci_bus(struct device_node *dn) -{ - struct pci_dn *pdn = dn->data; - - if (!pdn || !pdn->phb || !pdn->phb->bus) - return NULL; - - return find_bus_among_children(pdn->phb->bus, dn); -} -EXPORT_SYMBOL_GPL(pcibios_find_pci_bus); - struct pci_controller *init_phb_dynamic(struct device_node *dn) { struct pci_controller *phb; diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c index 7c7fcc042549..cc66c49f07aa 100644 --- a/arch/powerpc/platforms/pseries/reconfig.c +++ b/arch/powerpc/platforms/pseries/reconfig.c @@ -303,7 +303,6 @@ static int do_remove_property(char *buf, size_t bufsize) { struct device_node *np; char *tmp; - struct property *prop; buf = parse_node(buf, bufsize, &np); if (!np) @@ -316,9 +315,7 @@ static int do_remove_property(char *buf, size_t bufsize) if (strlen(buf) == 0) return -EINVAL; - prop = of_find_property(np, buf, NULL); - - return of_remove_property(np, prop); + return of_remove_property(np, of_find_property(np, buf, NULL)); } static int do_update_property(char *buf, size_t bufsize) diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 6e944fc6e5f9..9883bc7ea007 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -235,6 +235,8 @@ static void __init pseries_discover_pic(void) for_each_node_by_name(np, "interrupt-controller") { typep = of_get_property(np, "compatible", NULL); + if (!typep) + continue; if (strstr(typep, "open-pic")) { pSeries_mpic_node = of_node_get(np); ppc_md.init_IRQ = pseries_mpic_init_IRQ; @@ -265,7 +267,7 @@ static int pci_dn_reconfig_notifier(struct notifier_block *nb, unsigned long act pdn = parent ? PCI_DN(parent) : NULL; if (pdn) { /* Create pdn and EEH device */ - update_dn_pci_info(np, pdn->phb); + pci_add_device_node_info(pdn->phb, np); eeh_dev_init(PCI_DN(np), pdn->phb); } diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c index 85729f49764f..0ef9df49f0f2 100644 --- a/arch/powerpc/sysdev/fsl_pci.c +++ b/arch/powerpc/sysdev/fsl_pci.c @@ -37,6 +37,7 @@ #include <asm/pci-bridge.h> #include <asm/ppc-pci.h> #include <asm/machdep.h> +#include <asm/mpc85xx.h> #include <asm/disassemble.h> #include <asm/ppc-opcode.h> #include <sysdev/fsl_soc.h> @@ -527,6 +528,8 @@ int fsl_add_bridge(struct platform_device *pdev, int is_primary) u8 hdr_type, progif; struct device_node *dev; struct ccsr_pci __iomem *pci; + u16 temp; + u32 svr = mfspr(SPRN_SVR); dev = pdev->dev.of_node; @@ -596,6 +599,27 @@ int fsl_add_bridge(struct platform_device *pdev, int is_primary) PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS; if (fsl_pcie_check_link(hose)) hose->indirect_type |= PPC_INDIRECT_TYPE_NO_PCIE_LINK; + } else { + /* + * Set PBFR(PCI Bus Function Register)[10] = 1 to + * disable the combining of crossing cacheline + * boundary requests into one burst transaction. + * PCI-X operation is not affected. + * Fix erratum PCI 5 on MPC8548 + */ +#define PCI_BUS_FUNCTION 0x44 +#define PCI_BUS_FUNCTION_MDS 0x400 /* Master disable streaming */ + if (((SVR_SOC_VER(svr) == SVR_8543) || + (SVR_SOC_VER(svr) == SVR_8545) || + (SVR_SOC_VER(svr) == SVR_8547) || + (SVR_SOC_VER(svr) == SVR_8548)) && + !early_find_capability(hose, 0, 0, PCI_CAP_ID_PCIX)) { + early_read_config_word(hose, 0, 0, + PCI_BUS_FUNCTION, &temp); + temp |= PCI_BUS_FUNCTION_MDS; + early_write_config_word(hose, 0, 0, + PCI_BUS_FUNCTION, temp); + } } printk(KERN_INFO "Found FSL PCI host bridge at 0x%016llx. " diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c index afe3c7cd395d..7de45b2df366 100644 --- a/arch/powerpc/sysdev/mpic.c +++ b/arch/powerpc/sysdev/mpic.c @@ -2004,8 +2004,15 @@ static struct syscore_ops mpic_syscore_ops = { static int mpic_init_sys(void) { + int rc; + register_syscore_ops(&mpic_syscore_ops); - subsys_system_register(&mpic_subsys, NULL); + rc = subsys_system_register(&mpic_subsys, NULL); + if (rc) { + unregister_syscore_ops(&mpic_syscore_ops); + pr_err("mpic: Failed to register subsystem!\n"); + return rc; + } return 0; } diff --git a/arch/powerpc/xmon/Makefile b/arch/powerpc/xmon/Makefile index 436062dbb6e2..0b2f771593eb 100644 --- a/arch/powerpc/xmon/Makefile +++ b/arch/powerpc/xmon/Makefile @@ -7,7 +7,7 @@ UBSAN_SANITIZE := n ccflags-$(CONFIG_PPC64) := $(NO_MINIMAL_TOC) -obj-y += xmon.o nonstdio.o +obj-y += xmon.o nonstdio.o spr_access.o ifdef CONFIG_XMON_DISASSEMBLY obj-y += ppc-dis.o ppc-opc.o diff --git a/arch/powerpc/xmon/spr_access.S b/arch/powerpc/xmon/spr_access.S new file mode 100644 index 000000000000..84ad74213c83 --- /dev/null +++ b/arch/powerpc/xmon/spr_access.S @@ -0,0 +1,45 @@ +#include <asm/ppc_asm.h> + +/* unsigned long xmon_mfspr(sprn, default_value) */ +_GLOBAL(xmon_mfspr) + ld r5, .Lmfspr_table@got(r2) + b xmon_mxspr + +/* void xmon_mtspr(sprn, new_value) */ +_GLOBAL(xmon_mtspr) + ld r5, .Lmtspr_table@got(r2) + b xmon_mxspr + +/* + * r3 = sprn + * r4 = default or new value + * r5 = table base + */ +xmon_mxspr: + /* + * To index into the table of mxsprs we need: + * i = (sprn & 0x3ff) * 8 + * or using rwlinm: + * i = (sprn << 3) & (0x3ff << 3) + */ + rlwinm r3, r3, 3, 0x3ff << 3 + add r5, r5, r3 + mtctr r5 + mr r3, r4 /* put default_value in r3 for mfspr */ + bctr + +.Lmfspr_table: + spr = 0 + .rept 1024 + mfspr r3, spr + blr + spr = spr + 1 + .endr + +.Lmtspr_table: + spr = 0 + .rept 1024 + mtspr spr, r4 + blr + spr = spr + 1 + .endr diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c index 942796fa4767..c5e155108be5 100644 --- a/arch/powerpc/xmon/xmon.c +++ b/arch/powerpc/xmon/xmon.c @@ -86,6 +86,7 @@ static char tmpstr[128]; static long bus_error_jmp[JMP_BUF_LEN]; static int catch_memory_errors; +static int catch_spr_faults; static long *xmon_fault_jmp[NR_CPUS]; /* Breakpoint stuff */ @@ -147,7 +148,7 @@ void getstring(char *, int); static void flush_input(void); static int inchar(void); static void take_input(char *); -static unsigned long read_spr(int); +static int read_spr(int, unsigned long *); static void write_spr(int, unsigned long); static void super_regs(void); static void remove_bpts(void); @@ -250,6 +251,9 @@ Commands:\n\ sdi # disassemble spu local store for spu # (in hex)\n" #endif " S print special registers\n\ + Sa print all SPRs\n\ + Sr # read SPR #\n\ + Sw #v write v to SPR #\n\ t print backtrace\n\ x exit monitor and recover\n\ X exit monitor and don't recover\n" @@ -442,6 +446,12 @@ static int xmon_core(struct pt_regs *regs, int fromipi) #ifdef CONFIG_SMP cpu = smp_processor_id(); if (cpumask_test_cpu(cpu, &cpus_in_xmon)) { + /* + * We catch SPR read/write faults here because the 0x700, 0xf60 + * etc. handlers don't call debugger_fault_handler(). + */ + if (catch_spr_faults) + longjmp(bus_error_jmp, 1); get_output_lock(); excprint(regs); printf("cpu 0x%x: Exception %lx %s in xmon, " @@ -1635,89 +1645,87 @@ static void cacheflush(void) catch_memory_errors = 0; } -static unsigned long -read_spr(int n) +extern unsigned long xmon_mfspr(int spr, unsigned long default_value); +extern void xmon_mtspr(int spr, unsigned long value); + +static int +read_spr(int n, unsigned long *vp) { - unsigned int instrs[2]; - unsigned long (*code)(void); unsigned long ret = -1UL; -#ifdef CONFIG_PPC64 - unsigned long opd[3]; - - opd[0] = (unsigned long)instrs; - opd[1] = 0; - opd[2] = 0; - code = (unsigned long (*)(void)) opd; -#else - code = (unsigned long (*)(void)) instrs; -#endif - - /* mfspr r3,n; blr */ - instrs[0] = 0x7c6002a6 + ((n & 0x1F) << 16) + ((n & 0x3e0) << 6); - instrs[1] = 0x4e800020; - store_inst(instrs); - store_inst(instrs+1); + int ok = 0; if (setjmp(bus_error_jmp) == 0) { - catch_memory_errors = 1; + catch_spr_faults = 1; sync(); - ret = code(); + ret = xmon_mfspr(n, *vp); sync(); - /* wait a little while to see if we get a machine check */ - __delay(200); - n = size; + *vp = ret; + ok = 1; } + catch_spr_faults = 0; - return ret; + return ok; } static void write_spr(int n, unsigned long val) { - unsigned int instrs[2]; - unsigned long (*code)(unsigned long); -#ifdef CONFIG_PPC64 - unsigned long opd[3]; - - opd[0] = (unsigned long)instrs; - opd[1] = 0; - opd[2] = 0; - code = (unsigned long (*)(unsigned long)) opd; -#else - code = (unsigned long (*)(unsigned long)) instrs; -#endif - - instrs[0] = 0x7c6003a6 + ((n & 0x1F) << 16) + ((n & 0x3e0) << 6); - instrs[1] = 0x4e800020; - store_inst(instrs); - store_inst(instrs+1); - if (setjmp(bus_error_jmp) == 0) { - catch_memory_errors = 1; + catch_spr_faults = 1; sync(); - code(val); + xmon_mtspr(n, val); sync(); - /* wait a little while to see if we get a machine check */ - __delay(200); - n = size; + } else { + printf("SPR 0x%03x (%4d) Faulted during write\n", n, n); } + catch_spr_faults = 0; } static unsigned long regno; extern char exc_prolog; extern char dec_exc; +static void dump_one_spr(int spr, bool show_unimplemented) +{ + unsigned long val; + + val = 0xdeadbeef; + if (!read_spr(spr, &val)) { + printf("SPR 0x%03x (%4d) Faulted during read\n", spr, spr); + return; + } + + if (val == 0xdeadbeef) { + /* Looks like read was a nop, confirm */ + val = 0x0badcafe; + if (!read_spr(spr, &val)) { + printf("SPR 0x%03x (%4d) Faulted during read\n", spr, spr); + return; + } + + if (val == 0x0badcafe) { + if (show_unimplemented) + printf("SPR 0x%03x (%4d) Unimplemented\n", spr, spr); + return; + } + } + + printf("SPR 0x%03x (%4d) = 0x%lx\n", spr, spr, val); +} + static void super_regs(void) { int cmd; - unsigned long val; + int spr; cmd = skipbl(); - if (cmd == '\n') { + + switch (cmd) { + case '\n': { unsigned long sp, toc; asm("mr %0,1" : "=r" (sp) :); asm("mr %0,2" : "=r" (toc) :); @@ -1730,21 +1738,29 @@ static void super_regs(void) mfspr(SPRN_DEC), mfspr(SPRN_SPRG2)); printf("sp = "REG" sprg3= "REG"\n", sp, mfspr(SPRN_SPRG3)); printf("toc = "REG" dar = "REG"\n", toc, mfspr(SPRN_DAR)); - return; } - - scanhex(®no); - switch (cmd) { - case 'w': - val = read_spr(regno); + case 'w': { + unsigned long val; + scanhex(®no); + val = 0; + read_spr(regno, &val); scanhex(&val); write_spr(regno, val); - /* fall through */ + dump_one_spr(regno, true); + break; + } case 'r': - printf("spr %lx = %lx\n", regno, read_spr(regno)); + scanhex(®no); + dump_one_spr(regno, true); + break; + case 'a': + /* dump ALL SPRs */ + for (spr = 1; spr < 1024; ++spr) + dump_one_spr(spr, false); break; } + scannl(); } @@ -2913,7 +2929,7 @@ static void xmon_print_symbol(unsigned long address, const char *mid, printf("%s", after); } -#ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_PPC_STD_MMU_64 void dump_segments(void) { int i; diff --git a/drivers/cpufreq/pmac32-cpufreq.c b/drivers/cpufreq/pmac32-cpufreq.c index b7b576e53e92..ff44016ea031 100644 --- a/drivers/cpufreq/pmac32-cpufreq.c +++ b/drivers/cpufreq/pmac32-cpufreq.c @@ -300,7 +300,7 @@ static int pmu_set_cpu_speed(int low_speed) _set_L3CR(save_l3cr); /* Restore userland MMU context */ - switch_mmu_context(NULL, current->active_mm); + switch_mmu_context(NULL, current->active_mm, NULL); #ifdef DEBUG_FREQ printk(KERN_DEBUG "HID1, after: %x\n", mfspr(SPRN_HID1)); diff --git a/drivers/infiniband/hw/qib/qib_file_ops.c b/drivers/infiniband/hw/qib/qib_file_ops.c index 24f4a782e0f4..ff946d5f59e4 100644 --- a/drivers/infiniband/hw/qib/qib_file_ops.c +++ b/drivers/infiniband/hw/qib/qib_file_ops.c @@ -824,10 +824,7 @@ static int mmap_piobufs(struct vm_area_struct *vma, phys = dd->physaddr + piobufs; #if defined(__powerpc__) - /* There isn't a generic way to specify writethrough mappings */ - pgprot_val(vma->vm_page_prot) |= _PAGE_NO_CACHE; - pgprot_val(vma->vm_page_prot) |= _PAGE_WRITETHRU; - pgprot_val(vma->vm_page_prot) &= ~_PAGE_GUARDED; + vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); #endif /* diff --git a/drivers/infiniband/hw/qib/qib_pcie.c b/drivers/infiniband/hw/qib/qib_pcie.c index 4758a3801ae8..6abe1c621aa4 100644 --- a/drivers/infiniband/hw/qib/qib_pcie.c +++ b/drivers/infiniband/hw/qib/qib_pcie.c @@ -144,13 +144,7 @@ int qib_pcie_ddinit(struct qib_devdata *dd, struct pci_dev *pdev, addr = pci_resource_start(pdev, 0); len = pci_resource_len(pdev, 0); -#if defined(__powerpc__) - /* There isn't a generic way to specify writethrough mappings */ - dd->kregbase = __ioremap(addr, len, _PAGE_NO_CACHE | _PAGE_WRITETHRU); -#else dd->kregbase = ioremap_nocache(addr, len); -#endif - if (!dd->kregbase) return -ENOMEM; diff --git a/drivers/macintosh/rack-meter.c b/drivers/macintosh/rack-meter.c index caaec654d7ea..465c52219639 100644 --- a/drivers/macintosh/rack-meter.c +++ b/drivers/macintosh/rack-meter.c @@ -154,8 +154,8 @@ static void rackmeter_do_pause(struct rackmeter *rm, int pause) DBDMA_DO_STOP(rm->dma_regs); return; } - memset(rdma->buf1, 0, SAMPLE_COUNT & sizeof(u32)); - memset(rdma->buf2, 0, SAMPLE_COUNT & sizeof(u32)); + memset(rdma->buf1, 0, ARRAY_SIZE(rdma->buf1)); + memset(rdma->buf2, 0, ARRAY_SIZE(rdma->buf2)); rm->dma_buf_v->mark = 0; @@ -227,6 +227,7 @@ static void rackmeter_do_timer(struct work_struct *work) total_idle_ticks = get_cpu_idle_time(cpu); idle_ticks = (unsigned int) (total_idle_ticks - rcpu->prev_idle); + idle_ticks = min(idle_ticks, total_ticks); rcpu->prev_idle = total_idle_ticks; /* We do a very dumb calculation to update the LEDs for now, diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c index 01ee736fe0ef..f8b6d1403c16 100644 --- a/drivers/macintosh/via-pmu.c +++ b/drivers/macintosh/via-pmu.c @@ -1851,7 +1851,7 @@ static int powerbook_sleep_grackle(void) _set_L2CR(save_l2cr); /* Restore userland MMU context */ - switch_mmu_context(NULL, current->active_mm); + switch_mmu_context(NULL, current->active_mm, NULL); /* Power things up */ pmu_unlock(); @@ -1940,7 +1940,7 @@ powerbook_sleep_Core99(void) _set_L3CR(save_l3cr); /* Restore userland MMU context */ - switch_mmu_context(NULL, current->active_mm); + switch_mmu_context(NULL, current->active_mm, NULL); /* Tell PMU we are ready */ pmu_unlock(); diff --git a/drivers/misc/cxl/api.c b/drivers/misc/cxl/api.c index 2107c948406d..6d228ccd884d 100644 --- a/drivers/misc/cxl/api.c +++ b/drivers/misc/cxl/api.c @@ -68,15 +68,6 @@ struct cxl_context *cxl_get_context(struct pci_dev *dev) } EXPORT_SYMBOL_GPL(cxl_get_context); -struct device *cxl_get_phys_dev(struct pci_dev *dev) -{ - struct cxl_afu *afu; - - afu = cxl_pci_to_afu(dev); - - return afu->adapter->dev.parent; -} - int cxl_release_context(struct cxl_context *ctx) { if (ctx->status >= STARTED) @@ -192,6 +183,7 @@ int cxl_start_context(struct cxl_context *ctx, u64 wed, ctx->pid = get_task_pid(task, PIDTYPE_PID); ctx->glpid = get_task_pid(task->group_leader, PIDTYPE_PID); kernel = false; + ctx->real_mode = false; } cxl_ctx_get(); @@ -228,6 +220,24 @@ void cxl_set_master(struct cxl_context *ctx) } EXPORT_SYMBOL_GPL(cxl_set_master); +int cxl_set_translation_mode(struct cxl_context *ctx, bool real_mode) +{ + if (ctx->status == STARTED) { + /* + * We could potentially update the PE and issue an update LLCMD + * to support this, but it doesn't seem to have a good use case + * since it's trivial to just create a second kernel context + * with different translation modes, so until someone convinces + * me otherwise: + */ + return -EBUSY; + } + + ctx->real_mode = real_mode; + return 0; +} +EXPORT_SYMBOL_GPL(cxl_set_translation_mode); + /* wrappers around afu_* file ops which are EXPORTED */ int cxl_fd_open(struct inode *inode, struct file *file) { diff --git a/drivers/misc/cxl/context.c b/drivers/misc/cxl/context.c index 7edea9c19199..26d206b1d08c 100644 --- a/drivers/misc/cxl/context.c +++ b/drivers/misc/cxl/context.c @@ -297,8 +297,7 @@ static void reclaim_ctx(struct rcu_head *rcu) if (ctx->kernelapi) kfree(ctx->mapping); - if (ctx->irq_bitmap) - kfree(ctx->irq_bitmap); + kfree(ctx->irq_bitmap); /* Drop ref to the afu device taken during cxl_context_init */ cxl_afu_put(ctx->afu); diff --git a/drivers/misc/cxl/cxl.h b/drivers/misc/cxl/cxl.h index 73dc2a33da74..4fe50788ff45 100644 --- a/drivers/misc/cxl/cxl.h +++ b/drivers/misc/cxl/cxl.h @@ -178,15 +178,6 @@ static const cxl_p2n_reg_t CXL_PSL_WED_An = {0x0A0}; #define CXL_PSL_SR_An_MP (1ull << (63-62)) /* Master Process */ #define CXL_PSL_SR_An_LE (1ull << (63-63)) /* Little Endian */ -/****** CXL_PSL_LLCMD_An ****************************************************/ -#define CXL_LLCMD_TERMINATE 0x0001000000000000ULL -#define CXL_LLCMD_REMOVE 0x0002000000000000ULL -#define CXL_LLCMD_SUSPEND 0x0003000000000000ULL -#define CXL_LLCMD_RESUME 0x0004000000000000ULL -#define CXL_LLCMD_ADD 0x0005000000000000ULL -#define CXL_LLCMD_UPDATE 0x0006000000000000ULL -#define CXL_LLCMD_HANDLE_MASK 0x000000000000ffffULL - /****** CXL_PSL_ID_An ****************************************************/ #define CXL_PSL_ID_An_F (1ull << (63-31)) #define CXL_PSL_ID_An_L (1ull << (63-30)) @@ -376,11 +367,13 @@ struct cxl_afu_native { }; struct cxl_afu_guest { + struct cxl_afu *parent; u64 handle; phys_addr_t p2n_phys; u64 p2n_size; int max_ints; - struct mutex recovery_lock; + bool handle_err; + struct delayed_work work_err; int previous_state; }; @@ -524,6 +517,7 @@ struct cxl_context { bool pe_inserted; bool master; bool kernel; + bool real_mode; bool pending_irq; bool pending_fault; bool pending_afu_err; @@ -580,6 +574,7 @@ struct cxl { bool perst_loads_image; bool perst_select_user; bool perst_same_image; + bool psl_timebase_synced; }; int cxl_pci_alloc_one_irq(struct cxl *adapter); diff --git a/drivers/misc/cxl/fault.c b/drivers/misc/cxl/fault.c index 9a8650bcb042..377e650a2a1d 100644 --- a/drivers/misc/cxl/fault.c +++ b/drivers/misc/cxl/fault.c @@ -149,11 +149,13 @@ static void cxl_handle_page_fault(struct cxl_context *ctx, * update_mmu_cache() will not have loaded the hash since current->trap * is not a 0x400 or 0x300, so just call hash_page_mm() here. */ - access = _PAGE_PRESENT; + access = _PAGE_PRESENT | _PAGE_READ; if (dsisr & CXL_PSL_DSISR_An_S) - access |= _PAGE_RW; - if ((!ctx->kernel) || ~(dar & (1ULL << 63))) - access |= _PAGE_USER; + access |= _PAGE_WRITE; + + access |= _PAGE_PRIVILEGED; + if ((!ctx->kernel) || (REGION_ID(dar) == USER_REGION_ID)) + access &= ~_PAGE_PRIVILEGED; if (dsisr & DSISR_NOHPTE) inv_flags |= HPTE_NOHPTE_UPDATE; diff --git a/drivers/misc/cxl/guest.c b/drivers/misc/cxl/guest.c index 8213372de2b7..bc8d0b9870eb 100644 --- a/drivers/misc/cxl/guest.c +++ b/drivers/misc/cxl/guest.c @@ -178,6 +178,9 @@ static int afu_read_error_state(struct cxl_afu *afu, int *state_out) u64 state; int rc = 0; + if (!afu) + return -EIO; + rc = cxl_h_read_error_state(afu->guest->handle, &state); if (!rc) { WARN_ON(state != H_STATE_NORMAL && @@ -552,6 +555,17 @@ static int attach_afu_directed(struct cxl_context *ctx, u64 wed, u64 amr) elem->common.sstp0 = cpu_to_be64(ctx->sstp0); elem->common.sstp1 = cpu_to_be64(ctx->sstp1); + + /* + * Ensure we have at least one interrupt allocated to take faults for + * kernel contexts that may not have allocated any AFU IRQs at all: + */ + if (ctx->irqs.range[0] == 0) { + rc = afu_register_irqs(ctx, 0); + if (rc) + goto out_free; + } + for (r = 0; r < CXL_IRQ_RANGES; r++) { for (i = 0; i < ctx->irqs.range[r]; i++) { if (r == 0 && i == 0) { @@ -597,6 +611,7 @@ static int attach_afu_directed(struct cxl_context *ctx, u64 wed, u64 amr) enable_afu_irqs(ctx); } +out_free: free_page((u64)elem); return rc; } @@ -605,6 +620,9 @@ static int guest_attach_process(struct cxl_context *ctx, bool kernel, u64 wed, u { pr_devel("in %s\n", __func__); + if (ctx->real_mode) + return -EPERM; + ctx->kernel = kernel; if (ctx->afu->current_mode == CXL_MODE_DIRECTED) return attach_afu_directed(ctx, wed, amr); @@ -818,7 +836,6 @@ static int afu_update_state(struct cxl_afu *afu) switch (cur_state) { case H_STATE_NORMAL: afu->guest->previous_state = cur_state; - rc = 1; break; case H_STATE_DISABLE: @@ -834,7 +851,6 @@ static int afu_update_state(struct cxl_afu *afu) pci_error_handlers(afu, CXL_SLOT_RESET_EVENT, pci_channel_io_normal); pci_error_handlers(afu, CXL_RESUME_EVENT, 0); - rc = 1; } afu->guest->previous_state = 0; break; @@ -859,39 +875,30 @@ static int afu_update_state(struct cxl_afu *afu) return rc; } -static int afu_do_recovery(struct cxl_afu *afu) +static void afu_handle_errstate(struct work_struct *work) { - int rc; + struct cxl_afu_guest *afu_guest = + container_of(to_delayed_work(work), struct cxl_afu_guest, work_err); - /* many threads can arrive here, in case of detach_all for example. - * Only one needs to drive the recovery - */ - if (mutex_trylock(&afu->guest->recovery_lock)) { - rc = afu_update_state(afu); - mutex_unlock(&afu->guest->recovery_lock); - return rc; - } - return 0; + if (!afu_update_state(afu_guest->parent) && + afu_guest->previous_state == H_STATE_PERM_UNAVAILABLE) + return; + + if (afu_guest->handle_err == true) + schedule_delayed_work(&afu_guest->work_err, + msecs_to_jiffies(3000)); } static bool guest_link_ok(struct cxl *cxl, struct cxl_afu *afu) { int state; - if (afu) { - if (afu_read_error_state(afu, &state) || - state != H_STATE_NORMAL) { - if (afu_do_recovery(afu) > 0) { - /* check again in case we've just fixed it */ - if (!afu_read_error_state(afu, &state) && - state == H_STATE_NORMAL) - return true; - } - return false; - } + if (afu && (!afu_read_error_state(afu, &state))) { + if (state == H_STATE_NORMAL) + return true; } - return true; + return false; } static int afu_properties_look_ok(struct cxl_afu *afu) @@ -929,8 +936,6 @@ int cxl_guest_init_afu(struct cxl *adapter, int slice, struct device_node *afu_n return -ENOMEM; } - mutex_init(&afu->guest->recovery_lock); - if ((rc = dev_set_name(&afu->dev, "afu%i.%i", adapter->adapter_num, slice))) @@ -986,6 +991,15 @@ int cxl_guest_init_afu(struct cxl *adapter, int slice, struct device_node *afu_n afu->enabled = true; + /* + * wake up the cpu periodically to check the state + * of the AFU using "afu" stored in the guest structure. + */ + afu->guest->parent = afu; + afu->guest->handle_err = true; + INIT_DELAYED_WORK(&afu->guest->work_err, afu_handle_errstate); + schedule_delayed_work(&afu->guest->work_err, msecs_to_jiffies(1000)); + if ((rc = cxl_pci_vphb_add(afu))) dev_info(&afu->dev, "Can't register vPHB\n"); @@ -1014,6 +1028,10 @@ void cxl_guest_remove_afu(struct cxl_afu *afu) if (!afu) return; + /* flush and stop pending job */ + afu->guest->handle_err = false; + flush_delayed_work(&afu->guest->work_err); + cxl_pci_vphb_remove(afu); cxl_sysfs_afu_remove(afu); @@ -1101,6 +1119,12 @@ struct cxl *cxl_guest_init_adapter(struct device_node *np, struct platform_devic adapter->dev.release = release_adapter; dev_set_drvdata(&pdev->dev, adapter); + /* + * Hypervisor controls PSL timebase initialization (p1 register). + * On FW840, PSL is initialized. + */ + adapter->psl_timebase_synced = true; + if ((rc = cxl_of_read_adapter_handle(adapter, np))) goto err1; diff --git a/drivers/misc/cxl/native.c b/drivers/misc/cxl/native.c index ecf7557cd657..55d8a1459f28 100644 --- a/drivers/misc/cxl/native.c +++ b/drivers/misc/cxl/native.c @@ -186,16 +186,25 @@ static int spa_max_procs(int spa_size) int cxl_alloc_spa(struct cxl_afu *afu) { + unsigned spa_size; + /* Work out how many pages to allocate */ afu->native->spa_order = 0; do { afu->native->spa_order++; - afu->native->spa_size = (1 << afu->native->spa_order) * PAGE_SIZE; + spa_size = (1 << afu->native->spa_order) * PAGE_SIZE; + + if (spa_size > 0x100000) { + dev_warn(&afu->dev, "num_of_processes too large for the SPA, limiting to %i (0x%x)\n", + afu->native->spa_max_procs, afu->native->spa_size); + afu->num_procs = afu->native->spa_max_procs; + break; + } + + afu->native->spa_size = spa_size; afu->native->spa_max_procs = spa_max_procs(afu->native->spa_size); } while (afu->native->spa_max_procs < afu->num_procs); - WARN_ON(afu->native->spa_size > 0x100000); /* Max size supported by the hardware */ - if (!(afu->native->spa = (struct cxl_process_element *) __get_free_pages(GFP_KERNEL | __GFP_ZERO, afu->native->spa_order))) { pr_err("cxl_alloc_spa: Unable to allocate scheduled process area\n"); @@ -486,8 +495,9 @@ static u64 calculate_sr(struct cxl_context *ctx) if (mfspr(SPRN_LPCR) & LPCR_TC) sr |= CXL_PSL_SR_An_TC; if (ctx->kernel) { - sr |= CXL_PSL_SR_An_R | (mfmsr() & MSR_SF); - sr |= CXL_PSL_SR_An_HV; + if (!ctx->real_mode) + sr |= CXL_PSL_SR_An_R; + sr |= (mfmsr() & MSR_SF) | CXL_PSL_SR_An_HV; } else { sr |= CXL_PSL_SR_An_PR | CXL_PSL_SR_An_R; sr &= ~(CXL_PSL_SR_An_HV); @@ -526,6 +536,15 @@ static int attach_afu_directed(struct cxl_context *ctx, u64 wed, u64 amr) ctx->elem->common.sstp0 = cpu_to_be64(ctx->sstp0); ctx->elem->common.sstp1 = cpu_to_be64(ctx->sstp1); + /* + * Ensure we have the multiplexed PSL interrupt set up to take faults + * for kernel contexts that may not have allocated any AFU IRQs at all: + */ + if (ctx->irqs.range[0] == 0) { + ctx->irqs.offset[0] = ctx->afu->native->psl_hwirq; + ctx->irqs.range[0] = 1; + } + for (r = 0; r < CXL_IRQ_RANGES; r++) { ctx->elem->ivte_offsets[r] = cpu_to_be16(ctx->irqs.offset[r]); ctx->elem->ivte_ranges[r] = cpu_to_be16(ctx->irqs.range[r]); diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c index 2844e975bf79..a08fcc888a71 100644 --- a/drivers/misc/cxl/pci.c +++ b/drivers/misc/cxl/pci.c @@ -21,6 +21,7 @@ #include <asm/msi_bitmap.h> #include <asm/pnv-pci.h> #include <asm/io.h> +#include <asm/reg.h> #include "cxl.h" #include <misc/cxl.h> @@ -321,12 +322,43 @@ static void dump_afu_descriptor(struct cxl_afu *afu) #undef show_reg } +#define CAPP_UNIT0_ID 0xBA +#define CAPP_UNIT1_ID 0XBE + +static u64 get_capp_unit_id(struct device_node *np) +{ + u32 phb_index; + + /* + * For chips other than POWER8NVL, we only have CAPP 0, + * irrespective of which PHB is used. + */ + if (!pvr_version_is(PVR_POWER8NVL)) + return CAPP_UNIT0_ID; + + /* + * For POWER8NVL, assume CAPP 0 is attached to PHB0 and + * CAPP 1 is attached to PHB1. + */ + if (of_property_read_u32(np, "ibm,phb-index", &phb_index)) + return 0; + + if (phb_index == 0) + return CAPP_UNIT0_ID; + + if (phb_index == 1) + return CAPP_UNIT1_ID; + + return 0; +} + static int init_implementation_adapter_regs(struct cxl *adapter, struct pci_dev *dev) { struct device_node *np; const __be32 *prop; u64 psl_dsnctl; u64 chipid; + u64 capp_unit_id; if (!(np = pnv_pci_get_phb_node(dev))) return -ENODEV; @@ -336,10 +368,19 @@ static int init_implementation_adapter_regs(struct cxl *adapter, struct pci_dev if (!np) return -ENODEV; chipid = be32_to_cpup(prop); + capp_unit_id = get_capp_unit_id(np); of_node_put(np); + if (!capp_unit_id) { + pr_err("cxl: invalid capp unit id\n"); + return -ENODEV; + } + psl_dsnctl = 0x0000900000000000ULL; /* pteupd ttype, scdone */ + psl_dsnctl |= (0x2ULL << (63-38)); /* MMIO hang pulse: 256 us */ /* Tell PSL where to route data to */ - psl_dsnctl = 0x02E8900002000000ULL | (chipid << (63-5)); + psl_dsnctl |= (chipid << (63-5)); + psl_dsnctl |= (capp_unit_id << (63-13)); + cxl_p1_write(adapter, CXL_PSL_DSNDCTL, psl_dsnctl); cxl_p1_write(adapter, CXL_PSL_RESLCKTO, 0x20000000200ULL); /* snoop write mask */ @@ -355,22 +396,24 @@ static int init_implementation_adapter_regs(struct cxl *adapter, struct pci_dev #define TBSYNC_CNT(n) (((u64)n & 0x7) << (63-6)) #define _2048_250MHZ_CYCLES 1 -static int cxl_setup_psl_timebase(struct cxl *adapter, struct pci_dev *dev) +static void cxl_setup_psl_timebase(struct cxl *adapter, struct pci_dev *dev) { u64 psl_tb; int delta; unsigned int retry = 0; struct device_node *np; + adapter->psl_timebase_synced = false; + if (!(np = pnv_pci_get_phb_node(dev))) - return -ENODEV; + return; /* Do not fail when CAPP timebase sync is not supported by OPAL */ of_node_get(np); if (! of_get_property(np, "ibm,capp-timebase-sync", NULL)) { of_node_put(np); - pr_err("PSL: Timebase sync: OPAL support missing\n"); - return 0; + dev_info(&dev->dev, "PSL timebase inactive: OPAL support missing\n"); + return; } of_node_put(np); @@ -389,8 +432,8 @@ static int cxl_setup_psl_timebase(struct cxl *adapter, struct pci_dev *dev) do { msleep(1); if (retry++ > 5) { - pr_err("PSL: Timebase sync: giving up!\n"); - return -EIO; + dev_info(&dev->dev, "PSL timebase can't synchronize\n"); + return; } psl_tb = cxl_p1_read(adapter, CXL_PSL_Timebase); delta = mftb() - psl_tb; @@ -398,7 +441,8 @@ static int cxl_setup_psl_timebase(struct cxl *adapter, struct pci_dev *dev) delta = -delta; } while (tb_to_ns(delta) > 16000); - return 0; + adapter->psl_timebase_synced = true; + return; } static int init_implementation_afu_regs(struct cxl_afu *afu) @@ -1144,8 +1188,8 @@ static int cxl_configure_adapter(struct cxl *adapter, struct pci_dev *dev) if ((rc = pnv_phb_to_cxl_mode(dev, OPAL_PHB_CAPI_MODE_SNOOP_ON))) goto err; - if ((rc = cxl_setup_psl_timebase(adapter, dev))) - goto err; + /* Ignore error, adapter init is not dependant on timebase sync */ + cxl_setup_psl_timebase(adapter, dev); if ((rc = cxl_native_register_psl_err_irq(adapter))) goto err; diff --git a/drivers/misc/cxl/sysfs.c b/drivers/misc/cxl/sysfs.c index 25913c08794c..b043c20f158f 100644 --- a/drivers/misc/cxl/sysfs.c +++ b/drivers/misc/cxl/sysfs.c @@ -57,6 +57,15 @@ static ssize_t image_loaded_show(struct device *device, return scnprintf(buf, PAGE_SIZE, "factory\n"); } +static ssize_t psl_timebase_synced_show(struct device *device, + struct device_attribute *attr, + char *buf) +{ + struct cxl *adapter = to_cxl_adapter(device); + + return scnprintf(buf, PAGE_SIZE, "%i\n", adapter->psl_timebase_synced); +} + static ssize_t reset_adapter_store(struct device *device, struct device_attribute *attr, const char *buf, size_t count) @@ -142,6 +151,7 @@ static struct device_attribute adapter_attrs[] = { __ATTR_RO(psl_revision), __ATTR_RO(base_image), __ATTR_RO(image_loaded), + __ATTR_RO(psl_timebase_synced), __ATTR_RW(load_image_on_perst), __ATTR_RW(perst_reloads_same_image), __ATTR(reset, S_IWUSR, NULL, reset_adapter_store), diff --git a/drivers/of/base.c b/drivers/of/base.c index b299de2b3afa..64018ebcc861 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -1777,6 +1777,9 @@ int of_remove_property(struct device_node *np, struct property *prop) unsigned long flags; int rc; + if (!prop) + return -ENODEV; + mutex_lock(&of_mutex); raw_spin_lock_irqsave(&devtree_lock, flags); diff --git a/drivers/pci/hotplug/rpadlpar_core.c b/drivers/pci/hotplug/rpadlpar_core.c index b46b57d870fc..dc67f39779ec 100644 --- a/drivers/pci/hotplug/rpadlpar_core.c +++ b/drivers/pci/hotplug/rpadlpar_core.c @@ -175,7 +175,7 @@ static int dlpar_add_pci_slot(char *drc_name, struct device_node *dn) struct pci_dev *dev; struct pci_controller *phb; - if (pcibios_find_pci_bus(dn)) + if (pci_find_bus_by_node(dn)) return -EINVAL; /* Add pci bus */ @@ -212,7 +212,7 @@ static int dlpar_remove_phb(char *drc_name, struct device_node *dn) struct pci_dn *pdn; int rc = 0; - if (!pcibios_find_pci_bus(dn)) + if (!pci_find_bus_by_node(dn)) return -EINVAL; /* If pci slot is hotpluggable, use hotplug to remove it */ @@ -356,7 +356,7 @@ int dlpar_remove_pci_slot(char *drc_name, struct device_node *dn) pci_lock_rescan_remove(); - bus = pcibios_find_pci_bus(dn); + bus = pci_find_bus_by_node(dn); if (!bus) { ret = -EINVAL; goto out; @@ -380,7 +380,7 @@ int dlpar_remove_pci_slot(char *drc_name, struct device_node *dn) } /* Remove all devices below slot */ - pcibios_remove_pci_devices(bus); + pci_hp_remove_devices(bus); /* Unmap PCI IO space */ if (pcibios_unmap_io_space(bus)) { diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c index 611f6056221a..8d132024f06e 100644 --- a/drivers/pci/hotplug/rpaphp_core.c +++ b/drivers/pci/hotplug/rpaphp_core.c @@ -404,7 +404,7 @@ static int enable_slot(struct hotplug_slot *hotplug_slot) if (state == PRESENT) { pci_lock_rescan_remove(); - pcibios_add_pci_devices(slot->bus); + pci_hp_add_devices(slot->bus); pci_unlock_rescan_remove(); slot->state = CONFIGURED; } else if (state == EMPTY) { @@ -426,7 +426,7 @@ static int disable_slot(struct hotplug_slot *hotplug_slot) return -EINVAL; pci_lock_rescan_remove(); - pcibios_remove_pci_devices(slot->bus); + pci_hp_remove_devices(slot->bus); pci_unlock_rescan_remove(); vm_unmap_aliases(); diff --git a/drivers/pci/hotplug/rpaphp_pci.c b/drivers/pci/hotplug/rpaphp_pci.c index 7836d6913e67..ea41ea1d3c00 100644 --- a/drivers/pci/hotplug/rpaphp_pci.c +++ b/drivers/pci/hotplug/rpaphp_pci.c @@ -93,7 +93,7 @@ int rpaphp_enable_slot(struct slot *slot) if (rc) return rc; - bus = pcibios_find_pci_bus(slot->dn); + bus = pci_find_bus_by_node(slot->dn); if (!bus) { err("%s: no pci_bus for dn %s\n", __func__, slot->dn->full_name); return -EINVAL; @@ -116,7 +116,7 @@ int rpaphp_enable_slot(struct slot *slot) } if (list_empty(&bus->devices)) - pcibios_add_pci_devices(bus); + pci_hp_add_devices(bus); if (!list_empty(&bus->devices)) { info->adapter_status = CONFIGURED; diff --git a/drivers/pcmcia/electra_cf.c b/drivers/pcmcia/electra_cf.c index 61cf61ac621e..4d7bc3f4124a 100644 --- a/drivers/pcmcia/electra_cf.c +++ b/drivers/pcmcia/electra_cf.c @@ -228,7 +228,7 @@ static int electra_cf_probe(struct platform_device *ofdev) if (!cf->mem_base || !cf->io_virt || !cf->gpio_base || (__ioremap_at(io.start, cf->io_virt, cf->io_size, - _PAGE_NO_CACHE | _PAGE_GUARDED) == NULL)) { + pgprot_val(pgprot_noncached(__pgprot(0)))) == NULL)) { dev_err(device, "can't ioremap ranges\n"); status = -ENOMEM; goto fail1; diff --git a/drivers/vfio/vfio_iommu_spapr_tce.c b/drivers/vfio/vfio_iommu_spapr_tce.c index 0582b72ef377..3054e3fa63ac 100644 --- a/drivers/vfio/vfio_iommu_spapr_tce.c +++ b/drivers/vfio/vfio_iommu_spapr_tce.c @@ -1188,7 +1188,8 @@ static int tce_iommu_attach_group(void *iommu_data, goto unlock_exit; } table_group_tmp = iommu_group_get_iommudata(tcegrp->grp); - if (table_group_tmp->ops != table_group->ops) { + if (table_group_tmp->ops->create_table != + table_group->ops->create_table) { pr_warn("tce_vfio: Group %d is incompatible with group %d\n", iommu_group_id(iommu_group), iommu_group_id(tcegrp->grp)); diff --git a/include/misc/cxl.h b/include/misc/cxl.h index 7d5e2613c7b8..56560c5781b4 100644 --- a/include/misc/cxl.h +++ b/include/misc/cxl.h @@ -127,6 +127,14 @@ int cxl_afu_reset(struct cxl_context *ctx); void cxl_set_master(struct cxl_context *ctx); /* + * Sets the context to use real mode memory accesses to operate with + * translation disabled. Note that this only makes sense for kernel contexts + * under bare metal, and will not work with virtualisation. May only be + * performed on stopped contexts. + */ +int cxl_set_translation_mode(struct cxl_context *ctx, bool real_mode); + +/* * Map and unmap the AFU Problem Space area. The amount and location mapped * depends on if this context is a master or slave. */ diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 7e8d792da963..a6c8252d7776 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -3456,11 +3456,23 @@ struct ftrace_glob { int type; }; +/* + * If symbols in an architecture don't correspond exactly to the user-visible + * name of what they represent, it is possible to define this function to + * perform the necessary adjustments. +*/ +char * __weak arch_ftrace_match_adjust(char *str, const char *search) +{ + return str; +} + static int ftrace_match(char *str, struct ftrace_glob *g) { int matched = 0; int slen; + str = arch_ftrace_match_adjust(str, g->search); + switch (g->type) { case MATCH_FULL: if (strcmp(str, g->search) == 0) diff --git a/tools/perf/arch/powerpc/include/perf_regs.h b/tools/perf/arch/powerpc/include/perf_regs.h new file mode 100644 index 000000000000..75de0e92e71e --- /dev/null +++ b/tools/perf/arch/powerpc/include/perf_regs.h @@ -0,0 +1,69 @@ +#ifndef ARCH_PERF_REGS_H +#define ARCH_PERF_REGS_H + +#include <stdlib.h> +#include <linux/types.h> +#include <asm/perf_regs.h> + +#define PERF_REGS_MASK ((1ULL << PERF_REG_POWERPC_MAX) - 1) +#define PERF_REGS_MAX PERF_REG_POWERPC_MAX +#ifdef __powerpc64__ + #define PERF_SAMPLE_REGS_ABI PERF_SAMPLE_REGS_ABI_64 +#else + #define PERF_SAMPLE_REGS_ABI PERF_SAMPLE_REGS_ABI_32 +#endif + +#define PERF_REG_IP PERF_REG_POWERPC_NIP +#define PERF_REG_SP PERF_REG_POWERPC_R1 + +static const char *reg_names[] = { + [PERF_REG_POWERPC_R0] = "r0", + [PERF_REG_POWERPC_R1] = "r1", + [PERF_REG_POWERPC_R2] = "r2", + [PERF_REG_POWERPC_R3] = "r3", + [PERF_REG_POWERPC_R4] = "r4", + [PERF_REG_POWERPC_R5] = "r5", + [PERF_REG_POWERPC_R6] = "r6", + [PERF_REG_POWERPC_R7] = "r7", + [PERF_REG_POWERPC_R8] = "r8", + [PERF_REG_POWERPC_R9] = "r9", + [PERF_REG_POWERPC_R10] = "r10", + [PERF_REG_POWERPC_R11] = "r11", + [PERF_REG_POWERPC_R12] = "r12", + [PERF_REG_POWERPC_R13] = "r13", + [PERF_REG_POWERPC_R14] = "r14", + [PERF_REG_POWERPC_R15] = "r15", + [PERF_REG_POWERPC_R16] = "r16", + [PERF_REG_POWERPC_R17] = "r17", + [PERF_REG_POWERPC_R18] = "r18", + [PERF_REG_POWERPC_R19] = "r19", + [PERF_REG_POWERPC_R20] = "r20", + [PERF_REG_POWERPC_R21] = "r21", + [PERF_REG_POWERPC_R22] = "r22", + [PERF_REG_POWERPC_R23] = "r23", + [PERF_REG_POWERPC_R24] = "r24", + [PERF_REG_POWERPC_R25] = "r25", + [PERF_REG_POWERPC_R26] = "r26", + [PERF_REG_POWERPC_R27] = "r27", + [PERF_REG_POWERPC_R28] = "r28", + [PERF_REG_POWERPC_R29] = "r29", + [PERF_REG_POWERPC_R30] = "r30", + [PERF_REG_POWERPC_R31] = "r31", + [PERF_REG_POWERPC_NIP] = "nip", + [PERF_REG_POWERPC_MSR] = "msr", + [PERF_REG_POWERPC_ORIG_R3] = "orig_r3", + [PERF_REG_POWERPC_CTR] = "ctr", + [PERF_REG_POWERPC_LINK] = "link", + [PERF_REG_POWERPC_XER] = "xer", + [PERF_REG_POWERPC_CCR] = "ccr", + [PERF_REG_POWERPC_SOFTE] = "softe", + [PERF_REG_POWERPC_TRAP] = "trap", + [PERF_REG_POWERPC_DAR] = "dar", + [PERF_REG_POWERPC_DSISR] = "dsisr" +}; + +static inline const char *perf_reg_name(int id) +{ + return reg_names[id]; +} +#endif /* ARCH_PERF_REGS_H */ diff --git a/tools/perf/arch/powerpc/util/Build b/tools/perf/arch/powerpc/util/Build index c8fe2074d217..90ad64b231cd 100644 --- a/tools/perf/arch/powerpc/util/Build +++ b/tools/perf/arch/powerpc/util/Build @@ -1,6 +1,8 @@ libperf-y += header.o libperf-y += sym-handling.o libperf-y += kvm-stat.o +libperf-y += perf_regs.o libperf-$(CONFIG_DWARF) += dwarf-regs.o libperf-$(CONFIG_DWARF) += skip-callchain-idx.o +libperf-$(CONFIG_LIBUNWIND) += unwind-libunwind.o diff --git a/tools/perf/arch/powerpc/util/perf_regs.c b/tools/perf/arch/powerpc/util/perf_regs.c new file mode 100644 index 000000000000..a3c3e1ce6807 --- /dev/null +++ b/tools/perf/arch/powerpc/util/perf_regs.c @@ -0,0 +1,49 @@ +#include "../../perf.h" +#include "../../util/perf_regs.h" + +const struct sample_reg sample_reg_masks[] = { + SMPL_REG(r0, PERF_REG_POWERPC_R0), + SMPL_REG(r1, PERF_REG_POWERPC_R1), + SMPL_REG(r2, PERF_REG_POWERPC_R2), + SMPL_REG(r3, PERF_REG_POWERPC_R3), + SMPL_REG(r4, PERF_REG_POWERPC_R4), + SMPL_REG(r5, PERF_REG_POWERPC_R5), + SMPL_REG(r6, PERF_REG_POWERPC_R6), + SMPL_REG(r7, PERF_REG_POWERPC_R7), + SMPL_REG(r8, PERF_REG_POWERPC_R8), + SMPL_REG(r9, PERF_REG_POWERPC_R9), + SMPL_REG(r10, PERF_REG_POWERPC_R10), + SMPL_REG(r11, PERF_REG_POWERPC_R11), + SMPL_REG(r12, PERF_REG_POWERPC_R12), + SMPL_REG(r13, PERF_REG_POWERPC_R13), + SMPL_REG(r14, PERF_REG_POWERPC_R14), + SMPL_REG(r15, PERF_REG_POWERPC_R15), + SMPL_REG(r16, PERF_REG_POWERPC_R16), + SMPL_REG(r17, PERF_REG_POWERPC_R17), + SMPL_REG(r18, PERF_REG_POWERPC_R18), + SMPL_REG(r19, PERF_REG_POWERPC_R19), + SMPL_REG(r20, PERF_REG_POWERPC_R20), + SMPL_REG(r21, PERF_REG_POWERPC_R21), + SMPL_REG(r22, PERF_REG_POWERPC_R22), + SMPL_REG(r23, PERF_REG_POWERPC_R23), + SMPL_REG(r24, PERF_REG_POWERPC_R24), + SMPL_REG(r25, PERF_REG_POWERPC_R25), + SMPL_REG(r26, PERF_REG_POWERPC_R26), + SMPL_REG(r27, PERF_REG_POWERPC_R27), + SMPL_REG(r28, PERF_REG_POWERPC_R28), + SMPL_REG(r29, PERF_REG_POWERPC_R29), + SMPL_REG(r30, PERF_REG_POWERPC_R30), + SMPL_REG(r31, PERF_REG_POWERPC_R31), + SMPL_REG(nip, PERF_REG_POWERPC_NIP), + SMPL_REG(msr, PERF_REG_POWERPC_MSR), + SMPL_REG(orig_r3, PERF_REG_POWERPC_ORIG_R3), + SMPL_REG(ctr, PERF_REG_POWERPC_CTR), + SMPL_REG(link, PERF_REG_POWERPC_LINK), + SMPL_REG(xer, PERF_REG_POWERPC_XER), + SMPL_REG(ccr, PERF_REG_POWERPC_CCR), + SMPL_REG(softe, PERF_REG_POWERPC_SOFTE), + SMPL_REG(trap, PERF_REG_POWERPC_TRAP), + SMPL_REG(dar, PERF_REG_POWERPC_DAR), + SMPL_REG(dsisr, PERF_REG_POWERPC_DSISR), + SMPL_REG_END +}; diff --git a/tools/perf/arch/powerpc/util/unwind-libunwind.c b/tools/perf/arch/powerpc/util/unwind-libunwind.c new file mode 100644 index 000000000000..9e15f92ae49f --- /dev/null +++ b/tools/perf/arch/powerpc/util/unwind-libunwind.c @@ -0,0 +1,96 @@ +/* + * Copyright 2016 Chandan Kumar, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <errno.h> +#include <libunwind.h> +#include <asm/perf_regs.h> +#include "../../util/unwind.h" +#include "../../util/debug.h" + +int libunwind__arch_reg_id(int regnum) +{ + switch (regnum) { + case UNW_PPC64_R0: + return PERF_REG_POWERPC_R0; + case UNW_PPC64_R1: + return PERF_REG_POWERPC_R1; + case UNW_PPC64_R2: + return PERF_REG_POWERPC_R2; + case UNW_PPC64_R3: + return PERF_REG_POWERPC_R3; + case UNW_PPC64_R4: + return PERF_REG_POWERPC_R4; + case UNW_PPC64_R5: + return PERF_REG_POWERPC_R5; + case UNW_PPC64_R6: + return PERF_REG_POWERPC_R6; + case UNW_PPC64_R7: + return PERF_REG_POWERPC_R7; + case UNW_PPC64_R8: + return PERF_REG_POWERPC_R8; + case UNW_PPC64_R9: + return PERF_REG_POWERPC_R9; + case UNW_PPC64_R10: + return PERF_REG_POWERPC_R10; + case UNW_PPC64_R11: + return PERF_REG_POWERPC_R11; + case UNW_PPC64_R12: + return PERF_REG_POWERPC_R12; + case UNW_PPC64_R13: + return PERF_REG_POWERPC_R13; + case UNW_PPC64_R14: + return PERF_REG_POWERPC_R14; + case UNW_PPC64_R15: + return PERF_REG_POWERPC_R15; + case UNW_PPC64_R16: + return PERF_REG_POWERPC_R16; + case UNW_PPC64_R17: + return PERF_REG_POWERPC_R17; + case UNW_PPC64_R18: + return PERF_REG_POWERPC_R18; + case UNW_PPC64_R19: + return PERF_REG_POWERPC_R19; + case UNW_PPC64_R20: + return PERF_REG_POWERPC_R20; + case UNW_PPC64_R21: + return PERF_REG_POWERPC_R21; + case UNW_PPC64_R22: + return PERF_REG_POWERPC_R22; + case UNW_PPC64_R23: + return PERF_REG_POWERPC_R23; + case UNW_PPC64_R24: + return PERF_REG_POWERPC_R24; + case UNW_PPC64_R25: + return PERF_REG_POWERPC_R25; + case UNW_PPC64_R26: + return PERF_REG_POWERPC_R26; + case UNW_PPC64_R27: + return PERF_REG_POWERPC_R27; + case UNW_PPC64_R28: + return PERF_REG_POWERPC_R28; + case UNW_PPC64_R29: + return PERF_REG_POWERPC_R29; + case UNW_PPC64_R30: + return PERF_REG_POWERPC_R30; + case UNW_PPC64_R31: + return PERF_REG_POWERPC_R31; + case UNW_PPC64_LR: + return PERF_REG_POWERPC_LINK; + case UNW_PPC64_CTR: + return PERF_REG_POWERPC_CTR; + case UNW_PPC64_XER: + return PERF_REG_POWERPC_XER; + case UNW_PPC64_NIP: + return PERF_REG_POWERPC_NIP; + default: + pr_err("unwind: invalid reg id %d\n", regnum); + return -EINVAL; + } + return -EINVAL; +} diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile index 1e46277286c2..5ad0255f8756 100644 --- a/tools/perf/config/Makefile +++ b/tools/perf/config/Makefile @@ -23,6 +23,12 @@ $(call detected_var,ARCH) NO_PERF_REGS := 1 +# Additional ARCH settings for ppc +ifeq ($(ARCH),powerpc) + NO_PERF_REGS := 0 + LIBUNWIND_LIBS := -lunwind -lunwind-ppc64 +endif + # Additional ARCH settings for x86 ifeq ($(ARCH),x86) $(call detected,CONFIG_X86) diff --git a/tools/perf/util/perf_regs.c b/tools/perf/util/perf_regs.c index 6b8eb13e14e4..c4023f22f287 100644 --- a/tools/perf/util/perf_regs.c +++ b/tools/perf/util/perf_regs.c @@ -12,18 +12,18 @@ int perf_reg_value(u64 *valp, struct regs_dump *regs, int id) int i, idx = 0; u64 mask = regs->mask; - if (regs->cache_mask & (1 << id)) + if (regs->cache_mask & (1ULL << id)) goto out; - if (!(mask & (1 << id))) + if (!(mask & (1ULL << id))) return -EINVAL; for (i = 0; i < id; i++) { - if (mask & (1 << i)) + if (mask & (1ULL << i)) idx++; } - regs->cache_mask |= (1 << id); + regs->cache_mask |= (1ULL << id); regs->cache_regs[id] = regs->regs[idx]; out: diff --git a/tools/testing/selftests/powerpc/Makefile b/tools/testing/selftests/powerpc/Makefile index b08f77cbe31b..4ca83fe80654 100644 --- a/tools/testing/selftests/powerpc/Makefile +++ b/tools/testing/selftests/powerpc/Makefile @@ -14,6 +14,7 @@ export CFLAGS SUB_DIRS = benchmarks \ copyloops \ + context_switch \ dscr \ mm \ pmu \ diff --git a/tools/testing/selftests/powerpc/context_switch/.gitignore b/tools/testing/selftests/powerpc/context_switch/.gitignore new file mode 100644 index 000000000000..c1431af7b51c --- /dev/null +++ b/tools/testing/selftests/powerpc/context_switch/.gitignore @@ -0,0 +1 @@ +cp_abort diff --git a/tools/testing/selftests/powerpc/context_switch/Makefile b/tools/testing/selftests/powerpc/context_switch/Makefile new file mode 100644 index 000000000000..e164d1466466 --- /dev/null +++ b/tools/testing/selftests/powerpc/context_switch/Makefile @@ -0,0 +1,10 @@ +TEST_PROGS := cp_abort + +all: $(TEST_PROGS) + +$(TEST_PROGS): ../harness.c ../utils.c + +include ../../lib.mk + +clean: + rm -f $(TEST_PROGS) diff --git a/tools/testing/selftests/powerpc/context_switch/cp_abort.c b/tools/testing/selftests/powerpc/context_switch/cp_abort.c new file mode 100644 index 000000000000..5a5b55afda0e --- /dev/null +++ b/tools/testing/selftests/powerpc/context_switch/cp_abort.c @@ -0,0 +1,110 @@ +/* + * Adapted from Anton Blanchard's context switch microbenchmark. + * + * Copyright 2009, Anton Blanchard, IBM Corporation. + * Copyright 2016, Mikey Neuling, Chris Smart, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * This program tests the copy paste abort functionality of a P9 + * (or later) by setting up two processes on the same CPU, one + * which executes the copy instruction and the other which + * executes paste. + * + * The paste instruction should never succeed, as the cp_abort + * instruction is called by the kernel during a context switch. + * + */ + +#define _GNU_SOURCE + +#include <stdio.h> +#include <unistd.h> +#include <stdlib.h> +#include "utils.h" +#include <sched.h> + +#define READ_FD 0 +#define WRITE_FD 1 + +#define NUM_LOOPS 1000 + +/* This defines the "paste" instruction from Power ISA 3.0 Book II, section 4.4. */ +#define PASTE(RA, RB, L, RC) \ + .long (0x7c00070c | (RA) << (31-15) | (RB) << (31-20) | (L) << (31-10) | (RC) << (31-31)) + +int paste(void *i) +{ + int cr; + + asm volatile(str(PASTE(0, %1, 1, 1))";" + "mfcr %0;" + : "=r" (cr) + : "b" (i) + : "memory" + ); + return cr; +} + +/* This defines the "copy" instruction from Power ISA 3.0 Book II, section 4.4. */ +#define COPY(RA, RB, L) \ + .long (0x7c00060c | (RA) << (31-15) | (RB) << (31-20) | (L) << (31-10)) + +void copy(void *i) +{ + asm volatile(str(COPY(0, %0, 1))";" + : + : "b" (i) + : "memory" + ); +} + +int test_cp_abort(void) +{ + /* 128 bytes for a full cache line */ + char buf[128] __cacheline_aligned; + cpu_set_t cpuset; + int fd1[2], fd2[2], pid; + char c; + + /* only run this test on a P9 or later */ + SKIP_IF(!have_hwcap2(PPC_FEATURE2_ARCH_3_00)); + + /* + * Run both processes on the same CPU, so that copy is more likely + * to leak into a paste. + */ + CPU_ZERO(&cpuset); + CPU_SET(pick_online_cpu(), &cpuset); + FAIL_IF(sched_setaffinity(0, sizeof(cpuset), &cpuset)); + + FAIL_IF(pipe(fd1) || pipe(fd2)); + + pid = fork(); + FAIL_IF(pid < 0); + + if (!pid) { + for (int i = 0; i < NUM_LOOPS; i++) { + FAIL_IF((write(fd1[WRITE_FD], &c, 1)) != 1); + FAIL_IF((read(fd2[READ_FD], &c, 1)) != 1); + /* A paste succeeds if CR0 EQ bit is set */ + FAIL_IF(paste(buf) & 0x20000000); + } + } else { + for (int i = 0; i < NUM_LOOPS; i++) { + FAIL_IF((read(fd1[READ_FD], &c, 1)) != 1); + copy(buf); + FAIL_IF((write(fd2[WRITE_FD], &c, 1) != 1)); + } + } + return 0; + +} + +int main(int argc, char *argv[]) +{ + return test_harness(test_cp_abort, "cp_abort"); +} diff --git a/tools/testing/selftests/powerpc/mm/subpage_prot.c b/tools/testing/selftests/powerpc/mm/subpage_prot.c index 440180ff8089..35ade7406dcd 100644 --- a/tools/testing/selftests/powerpc/mm/subpage_prot.c +++ b/tools/testing/selftests/powerpc/mm/subpage_prot.c @@ -73,7 +73,7 @@ static inline void check_faulted(void *addr, long page, long subpage, int write) want_fault |= (subpage == ((page + 1) % 16)); if (faulted != want_fault) { - printf("Failed at 0x%p (p=%ld,sp=%ld,w=%d), want=%s, got=%s !\n", + printf("Failed at %p (p=%ld,sp=%ld,w=%d), want=%s, got=%s !\n", addr, page, subpage, write, want_fault ? "fault" : "pass", faulted ? "fault" : "pass"); @@ -82,7 +82,7 @@ static inline void check_faulted(void *addr, long page, long subpage, int write) if (faulted) { if (dar != addr) { - printf("Fault expected at 0x%p and happened at 0x%p !\n", + printf("Fault expected at %p and happened at %p !\n", addr, dar); } faulted = 0; @@ -162,7 +162,7 @@ int test_anon(void) mallocblock = (void *)align; - printf("allocated malloc block of 0x%lx bytes at 0x%p\n", + printf("allocated malloc block of 0x%lx bytes at %p\n", mallocsize, mallocblock); printf("testing malloc block...\n"); @@ -197,7 +197,7 @@ int test_file(void) perror("failed to map file"); return 1; } - printf("allocated %s for 0x%lx bytes at 0x%p\n", + printf("allocated %s for 0x%lx bytes at %p\n", file_name, filesize, fileblock); printf("testing file map...\n"); @@ -207,14 +207,16 @@ int test_file(void) int main(int argc, char *argv[]) { - test_harness(test_anon, "subpage_prot_anon"); + int rc; + + rc = test_harness(test_anon, "subpage_prot_anon"); + if (rc) + return rc; if (argc > 1) file_name = argv[1]; else file_name = "tempfile"; - test_harness(test_file, "subpage_prot_file"); - - return 0; + return test_harness(test_file, "subpage_prot_file"); } diff --git a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c index e67452f1bcff..46681fec549b 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/ebb.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/ebb.c @@ -15,7 +15,6 @@ #include <sys/ioctl.h> #include "trace.h" -#include "reg.h" #include "ebb.h" diff --git a/tools/testing/selftests/powerpc/pmu/ebb/reg_access_test.c b/tools/testing/selftests/powerpc/pmu/ebb/reg_access_test.c index 5b1188f10c15..f923228bca22 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/reg_access_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/reg_access_test.c @@ -7,7 +7,6 @@ #include <stdlib.h> #include "ebb.h" -#include "reg.h" /* diff --git a/tools/testing/selftests/powerpc/pmu/ebb/reg.h b/tools/testing/selftests/powerpc/reg.h index 5921b0dfe2e9..65bfdeeebdee 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/reg.h +++ b/tools/testing/selftests/powerpc/reg.h @@ -9,12 +9,12 @@ #define __stringify_1(x) #x #define __stringify(x) __stringify_1(x) -#define mfspr(rn) ({unsigned long rval; \ - asm volatile("mfspr %0," __stringify(rn) \ - : "=r" (rval)); rval; }) -#define mtspr(rn, v) asm volatile("mtspr " __stringify(rn) ",%0" : \ - : "r" ((unsigned long)(v)) \ - : "memory") +#define mfspr(rn) ({unsigned long rval; \ + asm volatile("mfspr %0," _str(rn) \ + : "=r" (rval)); rval; }) +#define mtspr(rn, v) asm volatile("mtspr " _str(rn) ",%0" : \ + : "r" ((unsigned long)(v)) \ + : "memory") #define mb() asm volatile("sync" : : : "memory"); @@ -46,4 +46,10 @@ #define SPRN_SDAR 781 #define SPRN_SIER 768 +#define SPRN_TEXASR 0x82 +#define SPRN_TFIAR 0x81 /* Transaction Failure Inst Addr */ +#define SPRN_TFHAR 0x80 /* Transaction Failure Handler Addr */ +#define TEXASR_FS 0x08000000 +#define SPRN_TAR 0x32f + #endif /* _SELFTESTS_POWERPC_REG_H */ diff --git a/tools/testing/selftests/powerpc/tm/.gitignore b/tools/testing/selftests/powerpc/tm/.gitignore index 7d0f14b8cb2e..bb942db845bf 100644 --- a/tools/testing/selftests/powerpc/tm/.gitignore +++ b/tools/testing/selftests/powerpc/tm/.gitignore @@ -3,3 +3,6 @@ tm-syscall tm-signal-msr-resv tm-signal-stack tm-vmxcopy +tm-fork +tm-tar +tm-tmspr diff --git a/tools/testing/selftests/powerpc/tm/Makefile b/tools/testing/selftests/powerpc/tm/Makefile index 737f72c964e6..d0505dbd22d5 100644 --- a/tools/testing/selftests/powerpc/tm/Makefile +++ b/tools/testing/selftests/powerpc/tm/Makefile @@ -1,4 +1,4 @@ -TEST_PROGS := tm-resched-dscr tm-syscall tm-signal-msr-resv tm-signal-stack tm-vmxcopy +TEST_PROGS := tm-resched-dscr tm-syscall tm-signal-msr-resv tm-signal-stack tm-vmxcopy tm-fork tm-tar tm-tmspr all: $(TEST_PROGS) @@ -6,6 +6,7 @@ $(TEST_PROGS): ../harness.c ../utils.c tm-syscall: tm-syscall-asm.S tm-syscall: CFLAGS += -mhtm -I../../../../../usr/include +tm-tmspr: CFLAGS += -pthread include ../../lib.mk diff --git a/tools/testing/selftests/powerpc/tm/tm-fork.c b/tools/testing/selftests/powerpc/tm/tm-fork.c new file mode 100644 index 000000000000..8d48579b7778 --- /dev/null +++ b/tools/testing/selftests/powerpc/tm/tm-fork.c @@ -0,0 +1,42 @@ +/* + * Copyright 2015, Michael Neuling, IBM Corp. + * Licensed under GPLv2. + * + * Edited: Rashmica Gupta, Nov 2015 + * + * This test does a fork syscall inside a transaction. Basic sniff test + * to see if we can enter the kernel during a transaction. + */ + +#include <errno.h> +#include <inttypes.h> +#include <pthread.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> + +#include "utils.h" +#include "tm.h" + +int test_fork(void) +{ + SKIP_IF(!have_htm()); + + asm __volatile__( + "tbegin.;" + "blt 1f; " + "li 0, 2;" /* fork syscall */ + "sc ;" + "tend.;" + "1: ;" + : : : "memory", "r0"); + /* If we reach here, we've passed. Otherwise we've probably crashed + * the kernel */ + + return 0; +} + +int main(int argc, char *argv[]) +{ + return test_harness(test_fork, "tm_fork"); +} diff --git a/tools/testing/selftests/powerpc/tm/tm-resched-dscr.c b/tools/testing/selftests/powerpc/tm/tm-resched-dscr.c index 8fde93d6021f..d9c49f41515e 100644 --- a/tools/testing/selftests/powerpc/tm/tm-resched-dscr.c +++ b/tools/testing/selftests/powerpc/tm/tm-resched-dscr.c @@ -31,12 +31,6 @@ #include "utils.h" #include "tm.h" -#define TBEGIN ".long 0x7C00051D ;" -#define TEND ".long 0x7C00055D ;" -#define TCHECK ".long 0x7C00059C ;" -#define TSUSPEND ".long 0x7C0005DD ;" -#define TRESUME ".long 0x7C2005DD ;" -#define SPRN_TEXASR 0x82 #define SPRN_DSCR 0x03 int test_body(void) @@ -55,13 +49,13 @@ int test_body(void) "mtspr %[sprn_dscr], 3;" /* start and suspend a transaction */ - TBEGIN + "tbegin.;" "beq 1f;" - TSUSPEND + "tsuspend.;" /* hard loop until the transaction becomes doomed */ "2: ;" - TCHECK + "tcheck 0;" "bc 4, 0, 2b;" /* record DSCR and TEXASR */ @@ -70,8 +64,8 @@ int test_body(void) "mfspr 3, %[sprn_texasr];" "std 3, %[texasr];" - TRESUME - TEND + "tresume.;" + "tend.;" "li %[rv], 0;" "1: ;" : [rv]"=r"(rv), [dscr2]"=m"(dscr2), [texasr]"=m"(texasr) diff --git a/tools/testing/selftests/powerpc/tm/tm-signal-stack.c b/tools/testing/selftests/powerpc/tm/tm-signal-stack.c index e44a238c1d77..1f0eb567438d 100644 --- a/tools/testing/selftests/powerpc/tm/tm-signal-stack.c +++ b/tools/testing/selftests/powerpc/tm/tm-signal-stack.c @@ -60,9 +60,9 @@ int tm_signal_stack() exit(1); asm volatile("li 1, 0 ;" /* stack ptr == NULL */ "1:" - ".long 0x7C00051D ;" /* tbegin */ + "tbegin.;" "beq 1b ;" /* retry forever */ - ".long 0x7C0005DD ; ;" /* tsuspend */ + "tsuspend.;" "ld 2, 0(1) ;" /* trigger segv" */ : : : "memory"); diff --git a/tools/testing/selftests/powerpc/tm/tm-tar.c b/tools/testing/selftests/powerpc/tm/tm-tar.c new file mode 100644 index 000000000000..2d2fcc2b7a60 --- /dev/null +++ b/tools/testing/selftests/powerpc/tm/tm-tar.c @@ -0,0 +1,90 @@ +/* + * Copyright 2015, Michael Neuling, IBM Corp. + * Licensed under GPLv2. + * Original: Michael Neuling 19/7/2013 + * Edited: Rashmica Gupta 01/12/2015 + * + * Do some transactions, see if the tar is corrupted. + * If the transaction is aborted, the TAR should be rolled back to the + * checkpointed value before the transaction began. The value written to + * TAR in suspended mode should only remain in TAR if the transaction + * completes. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> + +#include "tm.h" +#include "utils.h" + +int num_loops = 10000; + +int test_tar(void) +{ + int i; + + SKIP_IF(!have_htm()); + + for (i = 0; i < num_loops; i++) + { + uint64_t result = 0; + asm __volatile__( + "li 7, 1;" + "mtspr %[tar], 7;" /* tar = 1 */ + "tbegin.;" + "beq 3f;" + "li 4, 0x7000;" /* Loop lots, to use time */ + "2:;" /* Start loop */ + "li 7, 2;" + "mtspr %[tar], 7;" /* tar = 2 */ + "tsuspend.;" + "li 7, 3;" + "mtspr %[tar], 7;" /* tar = 3 */ + "tresume.;" + "subi 4, 4, 1;" + "cmpdi 4, 0;" + "bne 2b;" + "tend.;" + + /* Transaction sucess! TAR should be 3 */ + "mfspr 7, %[tar];" + "ori %[res], 7, 4;" // res = 3|4 = 7 + "b 4f;" + + /* Abort handler. TAR should be rolled back to 1 */ + "3:;" + "mfspr 7, %[tar];" + "ori %[res], 7, 8;" // res = 1|8 = 9 + "4:;" + + : [res]"=r"(result) + : [tar]"i"(SPRN_TAR) + : "memory", "r0", "r4", "r7"); + + /* If result is anything else other than 7 or 9, the tar + * value must have been corrupted. */ + if ((result != 7) && (result != 9)) + return 1; + } + return 0; +} + +int main(int argc, char *argv[]) +{ + /* A low number of iterations (eg 100) can cause a false pass */ + if (argc > 1) { + if (strcmp(argv[1], "-h") == 0) { + printf("Syntax:\n\t%s [<num loops>]\n", + argv[0]); + return 1; + } else { + num_loops = atoi(argv[1]); + } + } + + printf("Starting, %d loops\n", num_loops); + + return test_harness(test_tar, "tm_tar"); +} diff --git a/tools/testing/selftests/powerpc/tm/tm-tmspr.c b/tools/testing/selftests/powerpc/tm/tm-tmspr.c new file mode 100644 index 000000000000..2bda81c7bf23 --- /dev/null +++ b/tools/testing/selftests/powerpc/tm/tm-tmspr.c @@ -0,0 +1,143 @@ +/* + * Copyright 2015, Michael Neuling, IBM Corp. + * Licensed under GPLv2. + * + * Original: Michael Neuling 3/4/2014 + * Modified: Rashmica Gupta 8/12/2015 + * + * Check if any of the Transaction Memory SPRs get corrupted. + * - TFIAR - stores address of location of transaction failure + * - TFHAR - stores address of software failure handler (if transaction + * fails) + * - TEXASR - lots of info about the transacion(s) + * + * (1) create more threads than cpus + * (2) in each thread: + * (a) set TFIAR and TFHAR a unique value + * (b) loop for awhile, continually checking to see if + * either register has been corrupted. + * + * (3) Loop: + * (a) begin transaction + * (b) abort transaction + * (c) check TEXASR to see if FS has been corrupted + * + */ + +#define _GNU_SOURCE +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <pthread.h> +#include <string.h> + +#include "utils.h" +#include "tm.h" + +int num_loops = 10000; +int passed = 1; + +void tfiar_tfhar(void *in) +{ + int i, cpu; + unsigned long tfhar, tfhar_rd, tfiar, tfiar_rd; + cpu_set_t cpuset; + + CPU_ZERO(&cpuset); + cpu = (unsigned long)in >> 1; + CPU_SET(cpu, &cpuset); + sched_setaffinity(0, sizeof(cpuset), &cpuset); + + /* TFIAR: Last bit has to be high so userspace can read register */ + tfiar = ((unsigned long)in) + 1; + tfiar += 2; + mtspr(SPRN_TFIAR, tfiar); + + /* TFHAR: Last two bits are reserved */ + tfhar = ((unsigned long)in); + tfhar &= ~0x3UL; + tfhar += 4; + mtspr(SPRN_TFHAR, tfhar); + + for (i = 0; i < num_loops; i++) { + tfhar_rd = mfspr(SPRN_TFHAR); + tfiar_rd = mfspr(SPRN_TFIAR); + if ( (tfhar != tfhar_rd) || (tfiar != tfiar_rd) ) { + passed = 0; + return; + } + } + return; +} + +void texasr(void *in) +{ + unsigned long i; + uint64_t result = 0; + + for (i = 0; i < num_loops; i++) { + asm __volatile__( + "tbegin.;" + "beq 3f ;" + "tabort. 0 ;" + "tend.;" + + /* Abort handler */ + "3: ;" + ::: "memory"); + + /* Check the TEXASR */ + result = mfspr(SPRN_TEXASR); + if ((result & TEXASR_FS) == 0) { + passed = 0; + return; + } + } + return; +} + +int test_tmspr() +{ + pthread_t thread; + int thread_num; + unsigned long i; + + SKIP_IF(!have_htm()); + + /* To cause some context switching */ + thread_num = 10 * sysconf(_SC_NPROCESSORS_ONLN); + + /* Test TFIAR and TFHAR */ + for (i = 0 ; i < thread_num ; i += 2){ + if (pthread_create(&thread, NULL, (void*)tfiar_tfhar, (void *)i)) + return EXIT_FAILURE; + } + if (pthread_join(thread, NULL) != 0) + return EXIT_FAILURE; + + /* Test TEXASR */ + for (i = 0 ; i < thread_num ; i++){ + if (pthread_create(&thread, NULL, (void*)texasr, (void *)i)) + return EXIT_FAILURE; + } + if (pthread_join(thread, NULL) != 0) + return EXIT_FAILURE; + + if (passed) + return 0; + else + return 1; +} + +int main(int argc, char *argv[]) +{ + if (argc > 1) { + if (strcmp(argv[1], "-h") == 0) { + printf("Syntax:\t [<num loops>]\n"); + return 0; + } else { + num_loops = atoi(argv[1]); + } + } + return test_harness(test_tmspr, "tm_tmspr"); +} diff --git a/tools/testing/selftests/powerpc/utils.h b/tools/testing/selftests/powerpc/utils.h index 175ac6ad10dd..a985cfaa535e 100644 --- a/tools/testing/selftests/powerpc/utils.h +++ b/tools/testing/selftests/powerpc/utils.h @@ -6,9 +6,12 @@ #ifndef _SELFTESTS_POWERPC_UTILS_H #define _SELFTESTS_POWERPC_UTILS_H +#define __cacheline_aligned __attribute__((aligned(128))) + #include <stdint.h> #include <stdbool.h> #include <linux/auxvec.h> +#include "reg.h" /* Avoid headaches with PRI?64 - just use %ll? always */ typedef unsigned long long u64; @@ -54,4 +57,9 @@ do { \ #define _str(s) #s #define str(s) _str(s) +/* POWER9 feature */ +#ifndef PPC_FEATURE2_ARCH_3_00 +#define PPC_FEATURE2_ARCH_3_00 0x00800000 +#endif + #endif /* _SELFTESTS_POWERPC_UTILS_H */ |