diff options
132 files changed, 1664 insertions, 1061 deletions
diff --git a/Documentation/devicetree/bindings/net/macb.txt b/Documentation/devicetree/bindings/net/macb.txt index 44afa0e5057d..4ff65047bb9a 100644 --- a/Documentation/devicetree/bindings/net/macb.txt +++ b/Documentation/devicetree/bindings/net/macb.txt @@ -4,7 +4,7 @@ Required properties: - compatible: Should be "cdns,[<chip>-]{macb|gem}" Use "cdns,at91sam9260-macb" Atmel at91sam9260 and at91sam9263 SoCs. Use "cdns,at32ap7000-macb" for other 10/100 usage or use the generic form: "cdns,macb". - Use "cnds,pc302-gem" for Picochip picoXcell pc302 and later devices based on + Use "cdns,pc302-gem" for Picochip picoXcell pc302 and later devices based on the Cadence GEM, or the generic form: "cdns,gem". - reg: Address and length of the register set for the device - interrupts: Should contain macb interrupt diff --git a/Documentation/devicetree/bindings/video/simple-framebuffer.txt b/Documentation/devicetree/bindings/video/simple-framebuffer.txt new file mode 100644 index 000000000000..3ea460583111 --- /dev/null +++ b/Documentation/devicetree/bindings/video/simple-framebuffer.txt @@ -0,0 +1,25 @@ +Simple Framebuffer + +A simple frame-buffer describes a raw memory region that may be rendered to, +with the assumption that the display hardware has already been set up to scan +out from that buffer. + +Required properties: +- compatible: "simple-framebuffer" +- reg: Should contain the location and size of the framebuffer memory. +- width: The width of the framebuffer in pixels. +- height: The height of the framebuffer in pixels. +- stride: The number of bytes in each line of the framebuffer. +- format: The format of the framebuffer surface. Valid values are: + - r5g6b5 (16-bit pixels, d[15:11]=r, d[10:5]=g, d[4:0]=b). + +Example: + + framebuffer { + compatible = "simple-framebuffer"; + reg = <0x1d385000 (1600 * 1200 * 2)>; + width = <1600>; + height = <1200>; + stride = <(1600 * 2)>; + format = "r5g6b5"; + }; diff --git a/Documentation/rapidio/rapidio.txt b/Documentation/rapidio/rapidio.txt index c75694b35d08..a9c16c979da2 100644 --- a/Documentation/rapidio/rapidio.txt +++ b/Documentation/rapidio/rapidio.txt @@ -79,20 +79,63 @@ master port that is used to communicate with devices within the network. In order to initialize the RapidIO subsystem, a platform must initialize and register at least one master port within the RapidIO network. To register mport within the subsystem controller driver initialization code calls function -rio_register_mport() for each available master port. After all active master -ports are registered with a RapidIO subsystem, the rio_init_mports() routine -is called to perform enumeration and discovery. +rio_register_mport() for each available master port. -In the current PowerPC-based implementation a subsys_initcall() is specified to -perform controller initialization and mport registration. At the end it directly -calls rio_init_mports() to execute RapidIO enumeration and discovery. +RapidIO subsystem uses subsys_initcall() or device_initcall() to perform +controller initialization (depending on controller device type). + +After all active master ports are registered with a RapidIO subsystem, +an enumeration and/or discovery routine may be called automatically or +by user-space command. 4. Enumeration and Discovery ---------------------------- -When rio_init_mports() is called it scans a list of registered master ports and -calls an enumeration or discovery routine depending on the configured role of a -master port: host or agent. +4.1 Overview +------------ + +RapidIO subsystem configuration options allow users to specify enumeration and +discovery methods as statically linked components or loadable modules. +An enumeration/discovery method implementation and available input parameters +define how any given method can be attached to available RapidIO mports: +simply to all available mports OR individually to the specified mport device. + +Depending on selected enumeration/discovery build configuration, there are +several methods to initiate an enumeration and/or discovery process: + + (a) Statically linked enumeration and discovery process can be started + automatically during kernel initialization time using corresponding module + parameters. This was the original method used since introduction of RapidIO + subsystem. Now this method relies on enumerator module parameter which is + 'rio-scan.scan' for existing basic enumeration/discovery method. + When automatic start of enumeration/discovery is used a user has to ensure + that all discovering endpoints are started before the enumerating endpoint + and are waiting for enumeration to be completed. + Configuration option CONFIG_RAPIDIO_DISC_TIMEOUT defines time that discovering + endpoint waits for enumeration to be completed. If the specified timeout + expires the discovery process is terminated without obtaining RapidIO network + information. NOTE: a timed out discovery process may be restarted later using + a user-space command as it is described later if the given endpoint was + enumerated successfully. + + (b) Statically linked enumeration and discovery process can be started by + a command from user space. This initiation method provides more flexibility + for a system startup compared to the option (a) above. After all participating + endpoints have been successfully booted, an enumeration process shall be + started first by issuing a user-space command, after an enumeration is + completed a discovery process can be started on all remaining endpoints. + + (c) Modular enumeration and discovery process can be started by a command from + user space. After an enumeration/discovery module is loaded, a network scan + process can be started by issuing a user-space command. + Similar to the option (b) above, an enumerator has to be started first. + + (d) Modular enumeration and discovery process can be started by a module + initialization routine. In this case an enumerating module shall be loaded + first. + +When a network scan process is started it calls an enumeration or discovery +routine depending on the configured role of a master port: host or agent. Enumeration is performed by a master port if it is configured as a host port by assigning a host device ID greater than or equal to zero. A host device ID is @@ -104,8 +147,58 @@ for it. The enumeration and discovery routines use RapidIO maintenance transactions to access the configuration space of devices. -The enumeration process is implemented according to the enumeration algorithm -outlined in the RapidIO Interconnect Specification: Annex I [1]. +4.2 Automatic Start of Enumeration and Discovery +------------------------------------------------ + +Automatic enumeration/discovery start method is applicable only to built-in +enumeration/discovery RapidIO configuration selection. To enable automatic +enumeration/discovery start by existing basic enumerator method set use boot +command line parameter "rio-scan.scan=1". + +This configuration requires synchronized start of all RapidIO endpoints that +form a network which will be enumerated/discovered. Discovering endpoints have +to be started before an enumeration starts to ensure that all RapidIO +controllers have been initialized and are ready to be discovered. Configuration +parameter CONFIG_RAPIDIO_DISC_TIMEOUT defines time (in seconds) which +a discovering endpoint will wait for enumeration to be completed. + +When automatic enumeration/discovery start is selected, basic method's +initialization routine calls rio_init_mports() to perform enumeration or +discovery for all known mport devices. + +Depending on RapidIO network size and configuration this automatic +enumeration/discovery start method may be difficult to use due to the +requirement for synchronized start of all endpoints. + +4.3 User-space Start of Enumeration and Discovery +------------------------------------------------- + +User-space start of enumeration and discovery can be used with built-in and +modular build configurations. For user-space controlled start RapidIO subsystem +creates the sysfs write-only attribute file '/sys/bus/rapidio/scan'. To initiate +an enumeration or discovery process on specific mport device, a user needs to +write mport_ID (not RapidIO destination ID) into that file. The mport_ID is a +sequential number (0 ... RIO_MAX_MPORTS) assigned during mport device +registration. For example for machine with single RapidIO controller, mport_ID +for that controller always will be 0. + +To initiate RapidIO enumeration/discovery on all available mports a user may +write '-1' (or RIO_MPORT_ANY) into the scan attribute file. + +4.4 Basic Enumeration Method +---------------------------- + +This is an original enumeration/discovery method which is available since +first release of RapidIO subsystem code. The enumeration process is +implemented according to the enumeration algorithm outlined in the RapidIO +Interconnect Specification: Annex I [1]. + +This method can be configured as statically linked or loadable module. +The method's single parameter "scan" allows to trigger the enumeration/discovery +process from module initialization routine. + +This enumeration/discovery method can be started only once and does not support +unloading if it is built as a module. The enumeration process traverses the network using a recursive depth-first algorithm. When a new device is found, the enumerator takes ownership of that @@ -160,6 +253,19 @@ time period. If this wait time period expires before enumeration is completed, an agent skips RapidIO discovery and continues with remaining kernel initialization. +4.5 Adding New Enumeration/Discovery Method +------------------------------------------- + +RapidIO subsystem code organization allows addition of new enumeration/discovery +methods as new configuration options without significant impact to to the core +RapidIO code. + +A new enumeration/discovery method has to be attached to one or more mport +devices before an enumeration/discovery process can be started. Normally, +method's module initialization routine calls rio_register_scan() to attach +an enumerator to a specified mport device (or devices). The basic enumerator +implementation demonstrates this process. + 5. References ------------- diff --git a/Documentation/rapidio/sysfs.txt b/Documentation/rapidio/sysfs.txt index 97f71ce575d6..19878179da4c 100644 --- a/Documentation/rapidio/sysfs.txt +++ b/Documentation/rapidio/sysfs.txt @@ -88,3 +88,20 @@ that exports additional attributes. IDT_GEN2: errlog - reads contents of device error log until it is empty. + + +5. RapidIO Bus Attributes +------------------------- + +RapidIO bus subdirectory /sys/bus/rapidio implements the following bus-specific +attribute: + + scan - allows to trigger enumeration discovery process from user space. This + is a write-only attribute. To initiate an enumeration or discovery + process on specific mport device, a user needs to write mport_ID (not + RapidIO destination ID) into this file. The mport_ID is a sequential + number (0 ... RIO_MAX_MPORTS) assigned to the mport device. + For example, for a machine with a single RapidIO controller, mport_ID + for that controller always will be 0. + To initiate RapidIO enumeration/discovery on all available mports + a user must write '-1' (or RIO_MPORT_ANY) into this attribute file. diff --git a/arch/arc/boot/dts/abilis_tb100_dvk.dts b/arch/arc/boot/dts/abilis_tb100_dvk.dts index c0fd3623c393..0fa0d4abe795 100644 --- a/arch/arc/boot/dts/abilis_tb100_dvk.dts +++ b/arch/arc/boot/dts/abilis_tb100_dvk.dts @@ -37,7 +37,7 @@ soc100 { uart@FF100000 { - pinctrl-names = "abilis,simple-default"; + pinctrl-names = "default"; pinctrl-0 = <&pctl_uart0>; }; ethernet@FE100000 { diff --git a/arch/arc/boot/dts/abilis_tb101_dvk.dts b/arch/arc/boot/dts/abilis_tb101_dvk.dts index 6f8c381f6268..a4d80ce283ae 100644 --- a/arch/arc/boot/dts/abilis_tb101_dvk.dts +++ b/arch/arc/boot/dts/abilis_tb101_dvk.dts @@ -37,7 +37,7 @@ soc100 { uart@FF100000 { - pinctrl-names = "abilis,simple-default"; + pinctrl-names = "default"; pinctrl-0 = <&pctl_uart0>; }; ethernet@FE100000 { diff --git a/arch/arc/boot/dts/abilis_tb10x.dtsi b/arch/arc/boot/dts/abilis_tb10x.dtsi index a6139fc5aaa3..b97e3051ba4b 100644 --- a/arch/arc/boot/dts/abilis_tb10x.dtsi +++ b/arch/arc/boot/dts/abilis_tb10x.dtsi @@ -88,8 +88,7 @@ }; uart@FF100000 { - compatible = "snps,dw-apb-uart", - "abilis,simple-pinctrl"; + compatible = "snps,dw-apb-uart"; reg = <0xFF100000 0x100>; clock-frequency = <166666666>; interrupts = <25 1>; @@ -184,8 +183,7 @@ #address-cells = <1>; #size-cells = <0>; cell-index = <1>; - compatible = "abilis,tb100-spi", - "abilis,simple-pinctrl"; + compatible = "abilis,tb100-spi"; num-cs = <2>; reg = <0xFE011000 0x20>; interrupt-parent = <&tb10x_ictl>; diff --git a/arch/arc/include/asm/cacheflush.h b/arch/arc/include/asm/cacheflush.h index 9f841af41092..ef62682e8d95 100644 --- a/arch/arc/include/asm/cacheflush.h +++ b/arch/arc/include/asm/cacheflush.h @@ -93,14 +93,16 @@ static inline int cache_is_vipt_aliasing(void) #endif } -#define CACHE_COLOR(addr) (((unsigned long)(addr) >> (PAGE_SHIFT)) & 3) +#define CACHE_COLOR(addr) (((unsigned long)(addr) >> (PAGE_SHIFT)) & 1) /* * checks if two addresses (after page aligning) index into same cache set */ #define addr_not_cache_congruent(addr1, addr2) \ +({ \ cache_is_vipt_aliasing() ? \ - (CACHE_COLOR(addr1) != CACHE_COLOR(addr2)) : 0 \ + (CACHE_COLOR(addr1) != CACHE_COLOR(addr2)) : 0; \ +}) #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ do { \ diff --git a/arch/arc/include/asm/page.h b/arch/arc/include/asm/page.h index 374a35514116..ab84bf131fe1 100644 --- a/arch/arc/include/asm/page.h +++ b/arch/arc/include/asm/page.h @@ -19,13 +19,6 @@ #define clear_page(paddr) memset((paddr), 0, PAGE_SIZE) #define copy_page(to, from) memcpy((to), (from), PAGE_SIZE) -#ifndef CONFIG_ARC_CACHE_VIPT_ALIASING - -#define clear_user_page(addr, vaddr, pg) clear_page(addr) -#define copy_user_page(vto, vfrom, vaddr, pg) copy_page(vto, vfrom) - -#else /* VIPT aliasing dcache */ - struct vm_area_struct; struct page; @@ -35,8 +28,6 @@ void copy_user_highpage(struct page *to, struct page *from, unsigned long u_vaddr, struct vm_area_struct *vma); void clear_user_page(void *to, unsigned long u_vaddr, struct page *page); -#endif /* CONFIG_ARC_CACHE_VIPT_ALIASING */ - #undef STRICT_MM_TYPECHECKS #ifdef STRICT_MM_TYPECHECKS diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h index 1cc4720faccb..95b1522212a7 100644 --- a/arch/arc/include/asm/pgtable.h +++ b/arch/arc/include/asm/pgtable.h @@ -57,9 +57,9 @@ #define _PAGE_ACCESSED (1<<1) /* Page is accessed (S) */ #define _PAGE_CACHEABLE (1<<2) /* Page is cached (H) */ -#define _PAGE_EXECUTE (1<<3) /* Page has user execute perm (H) */ -#define _PAGE_WRITE (1<<4) /* Page has user write perm (H) */ -#define _PAGE_READ (1<<5) /* Page has user read perm (H) */ +#define _PAGE_U_EXECUTE (1<<3) /* Page has user execute perm (H) */ +#define _PAGE_U_WRITE (1<<4) /* Page has user write perm (H) */ +#define _PAGE_U_READ (1<<5) /* Page has user read perm (H) */ #define _PAGE_K_EXECUTE (1<<6) /* Page has kernel execute perm (H) */ #define _PAGE_K_WRITE (1<<7) /* Page has kernel write perm (H) */ #define _PAGE_K_READ (1<<8) /* Page has kernel perm (H) */ @@ -72,9 +72,9 @@ /* PD1 */ #define _PAGE_CACHEABLE (1<<0) /* Page is cached (H) */ -#define _PAGE_EXECUTE (1<<1) /* Page has user execute perm (H) */ -#define _PAGE_WRITE (1<<2) /* Page has user write perm (H) */ -#define _PAGE_READ (1<<3) /* Page has user read perm (H) */ +#define _PAGE_U_EXECUTE (1<<1) /* Page has user execute perm (H) */ +#define _PAGE_U_WRITE (1<<2) /* Page has user write perm (H) */ +#define _PAGE_U_READ (1<<3) /* Page has user read perm (H) */ #define _PAGE_K_EXECUTE (1<<4) /* Page has kernel execute perm (H) */ #define _PAGE_K_WRITE (1<<5) /* Page has kernel write perm (H) */ #define _PAGE_K_READ (1<<6) /* Page has kernel perm (H) */ @@ -93,7 +93,8 @@ #endif /* Kernel allowed all permissions for all pages */ -#define _K_PAGE_PERMS (_PAGE_K_EXECUTE | _PAGE_K_WRITE | _PAGE_K_READ) +#define _K_PAGE_PERMS (_PAGE_K_EXECUTE | _PAGE_K_WRITE | _PAGE_K_READ | \ + _PAGE_GLOBAL | _PAGE_PRESENT) #ifdef CONFIG_ARC_CACHE_PAGES #define _PAGE_DEF_CACHEABLE _PAGE_CACHEABLE @@ -106,7 +107,11 @@ * -by default cached, unless config otherwise * -present in memory */ -#define ___DEF (_PAGE_PRESENT | _K_PAGE_PERMS | _PAGE_DEF_CACHEABLE) +#define ___DEF (_PAGE_PRESENT | _PAGE_DEF_CACHEABLE) + +#define _PAGE_READ (_PAGE_U_READ | _PAGE_K_READ) +#define _PAGE_WRITE (_PAGE_U_WRITE | _PAGE_K_WRITE) +#define _PAGE_EXECUTE (_PAGE_U_EXECUTE | _PAGE_K_EXECUTE) /* Set of bits not changed in pte_modify */ #define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_MODIFIED) @@ -125,11 +130,10 @@ * kernel vaddr space - visible in all addr spaces, but kernel mode only * Thus Global, all-kernel-access, no-user-access, cached */ -#define PAGE_KERNEL __pgprot(___DEF | _PAGE_GLOBAL) +#define PAGE_KERNEL __pgprot(_K_PAGE_PERMS | _PAGE_DEF_CACHEABLE) /* ioremap */ -#define PAGE_KERNEL_NO_CACHE __pgprot(_PAGE_PRESENT | _K_PAGE_PERMS | \ - _PAGE_GLOBAL) +#define PAGE_KERNEL_NO_CACHE __pgprot(_K_PAGE_PERMS) /************************************************************************** * Mapping of vm_flags (Generic VM) to PTE flags (arch specific) diff --git a/arch/arc/include/asm/tlb.h b/arch/arc/include/asm/tlb.h index 85b6df839bd7..cb0c708ca665 100644 --- a/arch/arc/include/asm/tlb.h +++ b/arch/arc/include/asm/tlb.h @@ -16,7 +16,7 @@ /* Masks for actual TLB "PD"s */ #define PTE_BITS_IN_PD0 (_PAGE_GLOBAL | _PAGE_PRESENT) #define PTE_BITS_IN_PD1 (PAGE_MASK | _PAGE_CACHEABLE | \ - _PAGE_EXECUTE | _PAGE_WRITE | _PAGE_READ | \ + _PAGE_U_EXECUTE | _PAGE_U_WRITE | _PAGE_U_READ | \ _PAGE_K_EXECUTE | _PAGE_K_WRITE | _PAGE_K_READ) #ifndef __ASSEMBLY__ diff --git a/arch/arc/mm/cache_arc700.c b/arch/arc/mm/cache_arc700.c index 2f12bca8aef3..aedce1905441 100644 --- a/arch/arc/mm/cache_arc700.c +++ b/arch/arc/mm/cache_arc700.c @@ -610,7 +610,7 @@ void __sync_icache_dcache(unsigned long paddr, unsigned long vaddr, int len) local_irq_save(flags); __ic_line_inv_vaddr(paddr, vaddr, len); - __dc_line_op(paddr, vaddr, len, OP_FLUSH); + __dc_line_op(paddr, vaddr, len, OP_FLUSH_N_INV); local_irq_restore(flags); } @@ -676,6 +676,17 @@ void flush_cache_range(struct vm_area_struct *vma, unsigned long start, flush_cache_all(); } +void flush_anon_page(struct vm_area_struct *vma, struct page *page, + unsigned long u_vaddr) +{ + /* TBD: do we really need to clear the kernel mapping */ + __flush_dcache_page(page_address(page), u_vaddr); + __flush_dcache_page(page_address(page), page_address(page)); + +} + +#endif + void copy_user_highpage(struct page *to, struct page *from, unsigned long u_vaddr, struct vm_area_struct *vma) { @@ -725,16 +736,6 @@ void clear_user_page(void *to, unsigned long u_vaddr, struct page *page) set_bit(PG_arch_1, &page->flags); } -void flush_anon_page(struct vm_area_struct *vma, struct page *page, - unsigned long u_vaddr) -{ - /* TBD: do we really need to clear the kernel mapping */ - __flush_dcache_page(page_address(page), u_vaddr); - __flush_dcache_page(page_address(page), page_address(page)); - -} - -#endif /********************************************************************** * Explicit Cache flush request from user space via syscall diff --git a/arch/arc/mm/tlb.c b/arch/arc/mm/tlb.c index 066145b5f348..fe1c5a073afe 100644 --- a/arch/arc/mm/tlb.c +++ b/arch/arc/mm/tlb.c @@ -444,7 +444,8 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long vaddr_unaligned, * so userspace sees the right data. * (Avoids the flush for Non-exec + congruent mapping case) */ - if (vma->vm_flags & VM_EXEC || addr_not_cache_congruent(paddr, vaddr)) { + if ((vma->vm_flags & VM_EXEC) || + addr_not_cache_congruent(paddr, vaddr)) { struct page *page = pfn_to_page(pte_pfn(*ptep)); int dirty = test_and_clear_bit(PG_arch_1, &page->flags); diff --git a/arch/arc/mm/tlbex.S b/arch/arc/mm/tlbex.S index 9df765dc7c3a..3357d26ffe54 100644 --- a/arch/arc/mm/tlbex.S +++ b/arch/arc/mm/tlbex.S @@ -277,7 +277,7 @@ ARC_ENTRY EV_TLBMissI ;---------------------------------------------------------------- ; VERIFY_PTE: Check if PTE permissions approp for executing code cmp_s r2, VMALLOC_START - mov.lo r2, (_PAGE_PRESENT | _PAGE_READ | _PAGE_EXECUTE) + mov.lo r2, (_PAGE_PRESENT | _PAGE_U_READ | _PAGE_U_EXECUTE) mov.hs r2, (_PAGE_PRESENT | _PAGE_K_READ | _PAGE_K_EXECUTE) and r3, r0, r2 ; Mask out NON Flag bits from PTE @@ -320,9 +320,9 @@ ARC_ENTRY EV_TLBMissD mov_s r2, 0 lr r3, [ecr] btst_s r3, ECR_C_BIT_DTLB_LD_MISS ; Read Access - or.nz r2, r2, _PAGE_READ ; chk for Read flag in PTE + or.nz r2, r2, _PAGE_U_READ ; chk for Read flag in PTE btst_s r3, ECR_C_BIT_DTLB_ST_MISS ; Write Access - or.nz r2, r2, _PAGE_WRITE ; chk for Write flag in PTE + or.nz r2, r2, _PAGE_U_WRITE ; chk for Write flag in PTE ; Above laddering takes care of XCHG access ; which is both Read and Write diff --git a/arch/arc/plat-tb10x/tb10x.c b/arch/arc/plat-tb10x/tb10x.c index d3567691c7e1..06cb30929460 100644 --- a/arch/arc/plat-tb10x/tb10x.c +++ b/arch/arc/plat-tb10x/tb10x.c @@ -34,31 +34,6 @@ static void __init tb10x_platform_init(void) of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); } -static void __init tb10x_platform_late_init(void) -{ - struct device_node *dn; - - /* - * Pinctrl documentation recommends setting up the iomux here for - * all modules which don't require control over the pins themselves. - * Modules which need this kind of assistance are compatible with - * "abilis,simple-pinctrl", i.e. we can easily iterate over them. - * TODO: Does this recommended method work cleanly with pins required - * by modules? - */ - for_each_compatible_node(dn, NULL, "abilis,simple-pinctrl") { - struct platform_device *pd = of_find_device_by_node(dn); - struct pinctrl *pctl; - - pctl = pinctrl_get_select(&pd->dev, "abilis,simple-default"); - if (IS_ERR(pctl)) { - int ret = PTR_ERR(pctl); - dev_err(&pd->dev, "Could not set up pinctrl: %d\n", - ret); - } - } -} - static const char *tb10x_compat[] __initdata = { "abilis,arc-tb10x", NULL, @@ -67,5 +42,4 @@ static const char *tb10x_compat[] __initdata = { MACHINE_START(TB10x, "tb10x") .dt_compat = tb10x_compat, .init_machine = tb10x_platform_init, - .init_late = tb10x_platform_late_init, MACHINE_END diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index b9f7121e6ecf..f0895c581a89 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -177,7 +177,9 @@ dtb-$(CONFIG_ARCH_SPEAR3XX)+= spear300-evb.dtb \ spear320-evb.dtb \ spear320-hmi.dtb dtb-$(CONFIG_ARCH_SPEAR6XX)+= spear600-evb.dtb -dtb-$(CONFIG_ARCH_SUNXI) += sun4i-a10-cubieboard.dtb \ +dtb-$(CONFIG_ARCH_SUNXI) += \ + sun4i-a10-cubieboard.dtb \ + sun4i-a10-mini-xplus.dtb \ sun4i-a10-hackberry.dtb \ sun5i-a13-olinuxino.dtb dtb-$(CONFIG_ARCH_TEGRA) += tegra20-harmony.dtb \ diff --git a/arch/arm/boot/dts/armada-370-xp.dtsi b/arch/arm/boot/dts/armada-370-xp.dtsi index 272bbc65fab0..550eb772c30e 100644 --- a/arch/arm/boot/dts/armada-370-xp.dtsi +++ b/arch/arm/boot/dts/armada-370-xp.dtsi @@ -33,7 +33,8 @@ #size-cells = <1>; compatible = "simple-bus"; interrupt-parent = <&mpic>; - ranges = <0 0 0xd0000000 0x100000>; + ranges = <0 0 0xd0000000 0x0100000 /* internal registers */ + 0xe0000000 0 0xe0000000 0x8100000 /* PCIe */>; internal-regs { compatible = "simple-bus"; diff --git a/arch/arm/boot/dts/armada-370.dtsi b/arch/arm/boot/dts/armada-370.dtsi index b2c1b5af9749..aee2b1866ce2 100644 --- a/arch/arm/boot/dts/armada-370.dtsi +++ b/arch/arm/boot/dts/armada-370.dtsi @@ -29,7 +29,8 @@ }; soc { - ranges = <0 0xd0000000 0x100000>; + ranges = <0 0xd0000000 0x0100000 /* internal registers */ + 0xe0000000 0xe0000000 0x8100000 /* PCIe */>; internal-regs { system-controller@18200 { compatible = "marvell,armada-370-xp-system-controller"; @@ -38,12 +39,12 @@ L2: l2-cache { compatible = "marvell,aurora-outer-cache"; - reg = <0xd0008000 0x1000>; + reg = <0x08000 0x1000>; cache-id-part = <0x100>; wt-override; }; - mpic: interrupt-controller@20000 { + interrupt-controller@20000 { reg = <0x20a00 0x1d0>, <0x21870 0x58>; }; diff --git a/arch/arm/boot/dts/armada-xp-gp.dts b/arch/arm/boot/dts/armada-xp-gp.dts index 26ad06fc147e..3ee63d128e27 100644 --- a/arch/arm/boot/dts/armada-xp-gp.dts +++ b/arch/arm/boot/dts/armada-xp-gp.dts @@ -39,6 +39,9 @@ }; soc { + ranges = <0 0 0xd0000000 0x100000 + 0xf0000000 0 0xf0000000 0x1000000>; + internal-regs { serial@12000 { clock-frequency = <250000000>; diff --git a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts index f14d36c46159..46b785064dd8 100644 --- a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts +++ b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts @@ -27,6 +27,9 @@ }; soc { + ranges = <0 0 0xd0000000 0x100000 + 0xf0000000 0 0xf0000000 0x8000000>; + internal-regs { serial@12000 { clock-frequency = <250000000>; diff --git a/arch/arm/boot/dts/armada-xp.dtsi b/arch/arm/boot/dts/armada-xp.dtsi index bacab11c10dc..5b902f9a3af2 100644 --- a/arch/arm/boot/dts/armada-xp.dtsi +++ b/arch/arm/boot/dts/armada-xp.dtsi @@ -31,7 +31,7 @@ wt-override; }; - mpic: interrupt-controller@20000 { + interrupt-controller@20000 { reg = <0x20a00 0x2d0>, <0x21070 0x58>; }; diff --git a/arch/arm/boot/dts/at91sam9260.dtsi b/arch/arm/boot/dts/at91sam9260.dtsi index 70b5ccbac234..84c4bef2d726 100644 --- a/arch/arm/boot/dts/at91sam9260.dtsi +++ b/arch/arm/boot/dts/at91sam9260.dtsi @@ -264,7 +264,7 @@ atmel,pins = <0 10 0x2 0x0 /* PA10 periph B */ 0 11 0x2 0x0 /* PA11 periph B */ - 0 24 0x2 0x0 /* PA24 periph B */ + 0 22 0x2 0x0 /* PA22 periph B */ 0 25 0x2 0x0 /* PA25 periph B */ 0 26 0x2 0x0 /* PA26 periph B */ 0 27 0x2 0x0 /* PA27 periph B */ diff --git a/arch/arm/boot/dts/at91sam9n12.dtsi b/arch/arm/boot/dts/at91sam9n12.dtsi index 3de8e6dfbcb1..8d25f889928e 100644 --- a/arch/arm/boot/dts/at91sam9n12.dtsi +++ b/arch/arm/boot/dts/at91sam9n12.dtsi @@ -57,6 +57,7 @@ compatible = "atmel,at91rm9200-aic"; interrupt-controller; reg = <0xfffff000 0x200>; + atmel,external-irqs = <31>; }; ramc0: ramc@ffffe800 { diff --git a/arch/arm/boot/dts/at91sam9x25ek.dts b/arch/arm/boot/dts/at91sam9x25ek.dts index 3b40d11d65e7..315250b4995e 100644 --- a/arch/arm/boot/dts/at91sam9x25ek.dts +++ b/arch/arm/boot/dts/at91sam9x25ek.dts @@ -11,7 +11,7 @@ /include/ "at91sam9x5ek.dtsi" / { - model = "Atmel AT91SAM9G25-EK"; + model = "Atmel AT91SAM9X25-EK"; compatible = "atmel,at91sam9x25ek", "atmel,at91sam9x5ek", "atmel,at91sam9x5", "atmel,at91sam9"; ahb { diff --git a/arch/arm/boot/dts/omap3.dtsi b/arch/arm/boot/dts/omap3.dtsi index 82a404da1c0d..99ba6e14ebf3 100644 --- a/arch/arm/boot/dts/omap3.dtsi +++ b/arch/arm/boot/dts/omap3.dtsi @@ -516,7 +516,7 @@ usb_otg_hs: usb_otg_hs@480ab000 { compatible = "ti,omap3-musb"; reg = <0x480ab000 0x1000>; - interrupts = <0 92 0x4>, <0 93 0x4>; + interrupts = <92>, <93>; interrupt-names = "mc", "dma"; ti,hwmods = "usb_otg_hs"; multipoint = <1>; diff --git a/arch/arm/boot/dts/sama5d3.dtsi b/arch/arm/boot/dts/sama5d3.dtsi index 2e643ea51cce..5000e0d42849 100644 --- a/arch/arm/boot/dts/sama5d3.dtsi +++ b/arch/arm/boot/dts/sama5d3.dtsi @@ -75,11 +75,6 @@ compatible = "atmel,at91sam9x5-spi"; reg = <0xf0004000 0x100>; interrupts = <24 4 3>; - cs-gpios = <&pioD 13 0 - &pioD 14 0 /* conflicts with SCK0 and CANRX0 */ - &pioD 15 0 /* conflicts with CTS0 and CANTX0 */ - &pioD 16 0 /* conflicts with RTS0 and PWMFI3 */ - >; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_spi0>; status = "disabled"; @@ -156,7 +151,7 @@ }; macb0: ethernet@f0028000 { - compatible = "cnds,pc302-gem", "cdns,gem"; + compatible = "cdns,pc302-gem", "cdns,gem"; reg = <0xf0028000 0x100>; interrupts = <34 4 3>; pinctrl-names = "default"; @@ -203,11 +198,6 @@ compatible = "atmel,at91sam9x5-spi"; reg = <0xf8008000 0x100>; interrupts = <25 4 3>; - cs-gpios = <&pioC 25 0 - &pioC 26 0 /* conflitcs with TWD1 and ISI_D11 */ - &pioC 27 0 /* conflitcs with TWCK1 and ISI_D10 */ - &pioC 28 0 /* conflitcs with PWMFI0 and ISI_D9 */ - >; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_spi1>; status = "disabled"; diff --git a/arch/arm/boot/dts/sama5d3xcm.dtsi b/arch/arm/boot/dts/sama5d3xcm.dtsi index 1f8ed404626c..b336e7787cb3 100644 --- a/arch/arm/boot/dts/sama5d3xcm.dtsi +++ b/arch/arm/boot/dts/sama5d3xcm.dtsi @@ -32,6 +32,10 @@ ahb { apb { + spi0: spi@f0004000 { + cs-gpios = <&pioD 13 0>, <0>, <0>, <0>; + }; + macb0: ethernet@f0028000 { phy-mode = "rgmii"; }; diff --git a/arch/arm/boot/dts/ste-nomadik-s8815.dts b/arch/arm/boot/dts/ste-nomadik-s8815.dts index b28fbf3408e3..6f82d9368948 100644 --- a/arch/arm/boot/dts/ste-nomadik-s8815.dts +++ b/arch/arm/boot/dts/ste-nomadik-s8815.dts @@ -14,13 +14,19 @@ bootargs = "root=/dev/ram0 console=ttyAMA1,115200n8 earlyprintk"; }; + /* This is where the interrupt is routed on the S8815 board */ + external-bus@34000000 { + ethernet@300 { + interrupt-parent = <&gpio3>; + interrupts = <8 0x1>; + }; + }; + /* Custom board node with GPIO pins to active etc */ usb-s8815 { /* The S8815 is using this very GPIO pin for the SMSC91x IRQs */ ethernet-gpio { - gpios = <&gpio3 19 0x1>; - interrupts = <19 0x1>; - interrupt-parent = <&gpio3>; + gpios = <&gpio3 8 0x1>; }; /* This will bias the MMC/SD card detect line */ mmcsd-gpio { diff --git a/arch/arm/boot/dts/sun4i-a10-mini-xplus.dts b/arch/arm/boot/dts/sun4i-a10-mini-xplus.dts index 4a7c35d6726a..078ed7f618d7 100644 --- a/arch/arm/boot/dts/sun4i-a10-mini-xplus.dts +++ b/arch/arm/boot/dts/sun4i-a10-mini-xplus.dts @@ -22,8 +22,8 @@ bootargs = "earlyprintk console=ttyS0,115200"; }; - soc { - uart0: uart@01c28000 { + soc@01c20000 { + uart0: serial@01c28000 { pinctrl-names = "default"; pinctrl-0 = <&uart0_pins_a>; status = "okay"; diff --git a/arch/arm/configs/omap2plus_defconfig b/arch/arm/configs/omap2plus_defconfig index 435d69b83e32..abbe31937c65 100644 --- a/arch/arm/configs/omap2plus_defconfig +++ b/arch/arm/configs/omap2plus_defconfig @@ -20,6 +20,7 @@ CONFIG_MODULE_FORCE_UNLOAD=y CONFIG_MODVERSIONS=y CONFIG_MODULE_SRCVERSION_ALL=y # CONFIG_BLK_DEV_BSG is not set +CONFIG_ARCH_MULTI_V6=y CONFIG_ARCH_OMAP2PLUS=y CONFIG_OMAP_RESET_CLOCKS=y CONFIG_OMAP_MUX_DEBUG=y diff --git a/arch/arm/configs/tegra_defconfig b/arch/arm/configs/tegra_defconfig index a5f0485133cf..f7ba316164d4 100644 --- a/arch/arm/configs/tegra_defconfig +++ b/arch/arm/configs/tegra_defconfig @@ -153,6 +153,7 @@ CONFIG_MEDIA_CAMERA_SUPPORT=y CONFIG_MEDIA_USB_SUPPORT=y CONFIG_USB_VIDEO_CLASS=m CONFIG_DRM=y +CONFIG_TEGRA_HOST1X=y CONFIG_DRM_TEGRA=y CONFIG_BACKLIGHT_LCD_SUPPORT=y # CONFIG_LCD_CLASS_DEVICE is not set @@ -202,7 +203,7 @@ CONFIG_TEGRA20_APB_DMA=y CONFIG_STAGING=y CONFIG_SENSORS_ISL29018=y CONFIG_SENSORS_ISL29028=y -CONFIG_SENSORS_AK8975=y +CONFIG_AK8975=y CONFIG_MFD_NVEC=y CONFIG_KEYBOARD_NVEC=y CONFIG_SERIO_NVEC_PS2=y diff --git a/arch/arm/crypto/sha1-armv4-large.S b/arch/arm/crypto/sha1-armv4-large.S index 92c6eed7aac9..99207c45ec10 100644 --- a/arch/arm/crypto/sha1-armv4-large.S +++ b/arch/arm/crypto/sha1-armv4-large.S @@ -195,6 +195,7 @@ ENTRY(sha1_block_data_order) add r3,r3,r10 @ E+=F_00_19(B,C,D) cmp r14,sp bne .L_00_15 @ [((11+4)*5+2)*3] + sub sp,sp,#25*4 #if __ARM_ARCH__<7 ldrb r10,[r1,#2] ldrb r9,[r1,#3] @@ -290,7 +291,6 @@ ENTRY(sha1_block_data_order) add r3,r3,r10 @ E+=F_00_19(B,C,D) ldr r8,.LK_20_39 @ [+15+16*4] - sub sp,sp,#25*4 cmn sp,#0 @ [+3], clear carry to denote 20_39 .L_20_39_or_60_79: ldr r9,[r14,#15*4] diff --git a/arch/arm/include/debug/ux500.S b/arch/arm/include/debug/ux500.S index 2848857f5b62..fbd24beeb1fa 100644 --- a/arch/arm/include/debug/ux500.S +++ b/arch/arm/include/debug/ux500.S @@ -24,9 +24,9 @@ #define U8500_UART0_PHYS_BASE (0x80120000) #define U8500_UART1_PHYS_BASE (0x80121000) #define U8500_UART2_PHYS_BASE (0x80007000) -#define U8500_UART0_VIRT_BASE (0xa8120000) -#define U8500_UART1_VIRT_BASE (0xa8121000) -#define U8500_UART2_VIRT_BASE (0xa8007000) +#define U8500_UART0_VIRT_BASE (0xf8120000) +#define U8500_UART1_VIRT_BASE (0xf8121000) +#define U8500_UART2_VIRT_BASE (0xf8007000) #define __UX500_PHYS_UART(n) U8500_UART##n##_PHYS_BASE #define __UX500_VIRT_UART(n) U8500_UART##n##_VIRT_BASE #endif diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index f21970316836..282de4826abb 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -411,7 +411,6 @@ static struct vm_area_struct gate_vma = { .vm_start = 0xffff0000, .vm_end = 0xffff0000 + PAGE_SIZE, .vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYEXEC, - .vm_mm = &init_mm, }; static int __init gate_vma_init(void) diff --git a/arch/arm/mach-at91/at91rm9200_time.c b/arch/arm/mach-at91/at91rm9200_time.c index 2acdff4c1dfe..180b3024bec3 100644 --- a/arch/arm/mach-at91/at91rm9200_time.c +++ b/arch/arm/mach-at91/at91rm9200_time.c @@ -174,6 +174,7 @@ clkevt32k_next_event(unsigned long delta, struct clock_event_device *dev) static struct clock_event_device clkevt = { .name = "at91_tick", .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT, + .shift = 32, .rating = 150, .set_next_event = clkevt32k_next_event, .set_mode = clkevt32k_mode, @@ -264,9 +265,11 @@ void __init at91rm9200_timer_init(void) at91_st_write(AT91_ST_RTMR, 1); /* Setup timer clockevent, with minimum of two ticks (important!!) */ + clkevt.mult = div_sc(AT91_SLOW_CLOCK, NSEC_PER_SEC, clkevt.shift); + clkevt.max_delta_ns = clockevent_delta2ns(AT91_ST_ALMV, &clkevt); + clkevt.min_delta_ns = clockevent_delta2ns(2, &clkevt) + 1; clkevt.cpumask = cpumask_of(0); - clockevents_config_and_register(&clkevt, AT91_SLOW_CLOCK, - 2, AT91_ST_ALMV); + clockevents_register_device(&clkevt); /* register clocksource */ clocksource_register_hz(&clk32k, AT91_SLOW_CLOCK); diff --git a/arch/arm/mach-at91/at91sam9n12.c b/arch/arm/mach-at91/at91sam9n12.c index 13cdbcd48f51..c7d670d11802 100644 --- a/arch/arm/mach-at91/at91sam9n12.c +++ b/arch/arm/mach-at91/at91sam9n12.c @@ -223,13 +223,7 @@ static void __init at91sam9n12_map_io(void) at91_init_sram(0, AT91SAM9N12_SRAM_BASE, AT91SAM9N12_SRAM_SIZE); } -void __init at91sam9n12_initialize(void) -{ - at91_extern_irq = (1 << AT91SAM9N12_ID_IRQ0); -} - AT91_SOC_START(at91sam9n12) .map_io = at91sam9n12_map_io, .register_clocks = at91sam9n12_register_clocks, - .init = at91sam9n12_initialize, AT91_SOC_END diff --git a/arch/arm/mach-at91/include/mach/at91_pmc.h b/arch/arm/mach-at91/include/mach/at91_pmc.h index 31df12029c4e..2bd7f51b0b82 100644 --- a/arch/arm/mach-at91/include/mach/at91_pmc.h +++ b/arch/arm/mach-at91/include/mach/at91_pmc.h @@ -179,9 +179,9 @@ extern void __iomem *at91_pmc_base; #define AT91_PMC_PCR_CMD (0x1 << 12) /* Command (read=0, write=1) */ #define AT91_PMC_PCR_DIV(n) ((n) << 16) /* Divisor Value */ #define AT91_PMC_PCR_DIV0 0x0 /* Peripheral clock is MCK */ -#define AT91_PMC_PCR_DIV2 0x2 /* Peripheral clock is MCK/2 */ -#define AT91_PMC_PCR_DIV4 0x4 /* Peripheral clock is MCK/4 */ -#define AT91_PMC_PCR_DIV8 0x8 /* Peripheral clock is MCK/8 */ +#define AT91_PMC_PCR_DIV2 0x1 /* Peripheral clock is MCK/2 */ +#define AT91_PMC_PCR_DIV4 0x2 /* Peripheral clock is MCK/4 */ +#define AT91_PMC_PCR_DIV8 0x3 /* Peripheral clock is MCK/8 */ #define AT91_PMC_PCR_EN (0x1 << 28) /* Enable */ #endif diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c index 151259003086..dda9a2bd3acb 100644 --- a/arch/arm/mach-imx/clk-imx6q.c +++ b/arch/arm/mach-imx/clk-imx6q.c @@ -177,7 +177,8 @@ int imx6q_set_lpm(enum mxc_cpu_pwr_mode mode) static const char *step_sels[] = { "osc", "pll2_pfd2_396m", }; static const char *pll1_sw_sels[] = { "pll1_sys", "step", }; static const char *periph_pre_sels[] = { "pll2_bus", "pll2_pfd2_396m", "pll2_pfd0_352m", "pll2_198m", }; -static const char *periph_clk2_sels[] = { "pll3_usb_otg", "osc", }; +static const char *periph_clk2_sels[] = { "pll3_usb_otg", "osc", "osc", "dummy", }; +static const char *periph2_clk2_sels[] = { "pll3_usb_otg", "pll2_bus", }; static const char *periph_sels[] = { "periph_pre", "periph_clk2", }; static const char *periph2_sels[] = { "periph2_pre", "periph2_clk2", }; static const char *axi_sels[] = { "periph", "pll2_pfd2_396m", "pll3_pfd1_540m", }; @@ -185,7 +186,7 @@ static const char *audio_sels[] = { "pll4_post_div", "pll3_pfd2_508m", "pll3_pfd static const char *gpu_axi_sels[] = { "axi", "ahb", }; static const char *gpu2d_core_sels[] = { "axi", "pll3_usb_otg", "pll2_pfd0_352m", "pll2_pfd2_396m", }; static const char *gpu3d_core_sels[] = { "mmdc_ch0_axi", "pll3_usb_otg", "pll2_pfd1_594m", "pll2_pfd2_396m", }; -static const char *gpu3d_shader_sels[] = { "mmdc_ch0_axi", "pll3_usb_otg", "pll2_pfd1_594m", "pll2_pfd9_720m", }; +static const char *gpu3d_shader_sels[] = { "mmdc_ch0_axi", "pll3_usb_otg", "pll2_pfd1_594m", "pll3_pfd0_720m", }; static const char *ipu_sels[] = { "mmdc_ch0_axi", "pll2_pfd2_396m", "pll3_120m", "pll3_pfd1_540m", }; static const char *ldb_di_sels[] = { "pll5_video", "pll2_pfd0_352m", "pll2_pfd2_396m", "mmdc_ch1_axi", "pll3_usb_otg", }; static const char *ipu_di_pre_sels[] = { "mmdc_ch0_axi", "pll3_usb_otg", "pll5_video_div", "pll2_pfd0_352m", "pll2_pfd2_396m", "pll3_pfd1_540m", }; @@ -369,8 +370,8 @@ int __init mx6q_clocks_init(void) clk[pll1_sw] = imx_clk_mux("pll1_sw", base + 0xc, 2, 1, pll1_sw_sels, ARRAY_SIZE(pll1_sw_sels)); clk[periph_pre] = imx_clk_mux("periph_pre", base + 0x18, 18, 2, periph_pre_sels, ARRAY_SIZE(periph_pre_sels)); clk[periph2_pre] = imx_clk_mux("periph2_pre", base + 0x18, 21, 2, periph_pre_sels, ARRAY_SIZE(periph_pre_sels)); - clk[periph_clk2_sel] = imx_clk_mux("periph_clk2_sel", base + 0x18, 12, 1, periph_clk2_sels, ARRAY_SIZE(periph_clk2_sels)); - clk[periph2_clk2_sel] = imx_clk_mux("periph2_clk2_sel", base + 0x18, 20, 1, periph_clk2_sels, ARRAY_SIZE(periph_clk2_sels)); + clk[periph_clk2_sel] = imx_clk_mux("periph_clk2_sel", base + 0x18, 12, 2, periph_clk2_sels, ARRAY_SIZE(periph_clk2_sels)); + clk[periph2_clk2_sel] = imx_clk_mux("periph2_clk2_sel", base + 0x18, 20, 1, periph2_clk2_sels, ARRAY_SIZE(periph2_clk2_sels)); clk[axi_sel] = imx_clk_mux("axi_sel", base + 0x14, 6, 2, axi_sels, ARRAY_SIZE(axi_sels)); clk[esai_sel] = imx_clk_mux("esai_sel", base + 0x20, 19, 2, audio_sels, ARRAY_SIZE(audio_sels)); clk[asrc_sel] = imx_clk_mux("asrc_sel", base + 0x30, 7, 2, audio_sels, ARRAY_SIZE(audio_sels)); @@ -498,7 +499,7 @@ int __init mx6q_clocks_init(void) clk[ldb_di1] = imx_clk_gate2("ldb_di1", "ldb_di1_podf", base + 0x74, 14); clk[ipu2_di1] = imx_clk_gate2("ipu2_di1", "ipu2_di1_sel", base + 0x74, 10); clk[hsi_tx] = imx_clk_gate2("hsi_tx", "hsi_tx_podf", base + 0x74, 16); - clk[mlb] = imx_clk_gate2("mlb", "pll8_mlb", base + 0x74, 18); + clk[mlb] = imx_clk_gate2("mlb", "axi", base + 0x74, 18); clk[mmdc_ch0_axi] = imx_clk_gate2("mmdc_ch0_axi", "mmdc_ch0_axi_podf", base + 0x74, 20); clk[mmdc_ch1_axi] = imx_clk_gate2("mmdc_ch1_axi", "mmdc_ch1_axi_podf", base + 0x74, 22); clk[ocram] = imx_clk_gate2("ocram", "ahb", base + 0x74, 28); diff --git a/arch/arm/mach-imx/headsmp.S b/arch/arm/mach-imx/headsmp.S index 67b9c48dcafe..627f16f0e9d1 100644 --- a/arch/arm/mach-imx/headsmp.S +++ b/arch/arm/mach-imx/headsmp.S @@ -18,8 +18,20 @@ .section ".text.head", "ax" #ifdef CONFIG_SMP +diag_reg_offset: + .word g_diag_reg - . + + .macro set_diag_reg + adr r0, diag_reg_offset + ldr r1, [r0] + add r1, r1, r0 @ r1 = physical &g_diag_reg + ldr r0, [r1] + mcr p15, 0, r0, c15, c0, 1 @ write diagnostic register + .endm + ENTRY(v7_secondary_startup) bl v7_invalidate_l1 + set_diag_reg b secondary_startup ENDPROC(v7_secondary_startup) #endif diff --git a/arch/arm/mach-imx/platsmp.c b/arch/arm/mach-imx/platsmp.c index 4a69305db65e..c6e1ab544882 100644 --- a/arch/arm/mach-imx/platsmp.c +++ b/arch/arm/mach-imx/platsmp.c @@ -12,6 +12,7 @@ #include <linux/init.h> #include <linux/smp.h> +#include <asm/cacheflush.h> #include <asm/page.h> #include <asm/smp_scu.h> #include <asm/mach/map.h> @@ -21,6 +22,7 @@ #define SCU_STANDBY_ENABLE (1 << 5) +u32 g_diag_reg; static void __iomem *scu_base; static struct map_desc scu_io_desc __initdata = { @@ -80,6 +82,18 @@ void imx_smp_prepare(void) static void __init imx_smp_prepare_cpus(unsigned int max_cpus) { imx_smp_prepare(); + + /* + * The diagnostic register holds the errata bits. Mostly bootloader + * does not bring up secondary cores, so that when errata bits are set + * in bootloader, they are set only for boot cpu. But on a SMP + * configuration, it should be equally done on every single core. + * Read the register from boot cpu here, and will replicate it into + * secondary cores when booting them. + */ + asm("mrc p15, 0, %0, c15, c0, 1" : "=r" (g_diag_reg) : : "cc"); + __cpuc_flush_dcache_area(&g_diag_reg, sizeof(g_diag_reg)); + outer_clean_range(__pa(&g_diag_reg), __pa(&g_diag_reg + 1)); } struct smp_operations imx_smp_ops __initdata = { diff --git a/arch/arm/mach-kirkwood/common.c b/arch/arm/mach-kirkwood/common.c index c2cae69e6d2b..f38922897563 100644 --- a/arch/arm/mach-kirkwood/common.c +++ b/arch/arm/mach-kirkwood/common.c @@ -528,12 +528,6 @@ void __init kirkwood_init_early(void) { orion_time_set_base(TIMER_VIRT_BASE); - /* - * Some Kirkwood devices allocate their coherent buffers from atomic - * context. Increase size of atomic coherent pool to make sure such - * the allocations won't fail. - */ - init_dma_coherent_pool_size(SZ_1M); mvebu_mbus_init("marvell,kirkwood-mbus", BRIDGE_WINS_BASE, BRIDGE_WINS_SZ, DDR_WINDOW_CPU_BASE, DDR_WINDOW_CPU_SZ); diff --git a/arch/arm/mach-kirkwood/ts219-setup.c b/arch/arm/mach-kirkwood/ts219-setup.c index 283abff90228..e1267d6b468f 100644 --- a/arch/arm/mach-kirkwood/ts219-setup.c +++ b/arch/arm/mach-kirkwood/ts219-setup.c @@ -124,7 +124,7 @@ static void __init qnap_ts219_init(void) static int __init ts219_pci_init(void) { if (machine_is_ts219()) - kirkwood_pcie_init(KW_PCIE0); + kirkwood_pcie_init(KW_PCIE1 | KW_PCIE0); return 0; } diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig index e11acbb0a46d..80a8bcacd9d5 100644 --- a/arch/arm/mach-mvebu/Kconfig +++ b/arch/arm/mach-mvebu/Kconfig @@ -15,6 +15,7 @@ config ARCH_MVEBU select MVEBU_CLK_GATING select MVEBU_MBUS select ZONE_DMA if ARM_LPAE + select ARCH_REQUIRE_GPIOLIB if ARCH_MVEBU diff --git a/arch/arm/mach-mvebu/armada-370-xp.c b/arch/arm/mach-mvebu/armada-370-xp.c index 42a4cb3087e2..1c48890bb72b 100644 --- a/arch/arm/mach-mvebu/armada-370-xp.c +++ b/arch/arm/mach-mvebu/armada-370-xp.c @@ -54,13 +54,6 @@ void __init armada_370_xp_init_early(void) char *mbus_soc_name; /* - * Some Armada 370/XP devices allocate their coherent buffers - * from atomic context. Increase size of atomic coherent pool - * to make sure such the allocations won't fail. - */ - init_dma_coherent_pool_size(SZ_1M); - - /* * This initialization will be replaced by a DT-based * initialization once the mvebu-mbus driver gains DT support. */ diff --git a/arch/arm/mach-omap1/dma.c b/arch/arm/mach-omap1/dma.c index 68ab858e27b7..a94b3a718d1a 100644 --- a/arch/arm/mach-omap1/dma.c +++ b/arch/arm/mach-omap1/dma.c @@ -345,6 +345,7 @@ static int __init omap1_system_dma_init(void) dev_err(&pdev->dev, "%s: Memory allocation failed for d->chan!\n", __func__); + ret = -ENOMEM; goto exit_release_d; } diff --git a/arch/arm/mach-omap2/cclock33xx_data.c b/arch/arm/mach-omap2/cclock33xx_data.c index 6ebc7803bc3e..af3544ce4f02 100644 --- a/arch/arm/mach-omap2/cclock33xx_data.c +++ b/arch/arm/mach-omap2/cclock33xx_data.c @@ -454,9 +454,29 @@ DEFINE_CLK_GATE(cefuse_fck, "sys_clkin_ck", &sys_clkin_ck, 0x0, */ DEFINE_CLK_FIXED_FACTOR(clkdiv32k_ck, "clk_24mhz", &clk_24mhz, 0x0, 1, 732); -DEFINE_CLK_GATE(clkdiv32k_ick, "clkdiv32k_ck", &clkdiv32k_ck, 0x0, - AM33XX_CM_PER_CLKDIV32K_CLKCTRL, AM33XX_MODULEMODE_SWCTRL_SHIFT, - 0x0, NULL); +static struct clk clkdiv32k_ick; + +static const char *clkdiv32k_ick_parent_names[] = { + "clkdiv32k_ck", +}; + +static const struct clk_ops clkdiv32k_ick_ops = { + .enable = &omap2_dflt_clk_enable, + .disable = &omap2_dflt_clk_disable, + .is_enabled = &omap2_dflt_clk_is_enabled, + .init = &omap2_init_clk_clkdm, +}; + +static struct clk_hw_omap clkdiv32k_ick_hw = { + .hw = { + .clk = &clkdiv32k_ick, + }, + .enable_reg = AM33XX_CM_PER_CLKDIV32K_CLKCTRL, + .enable_bit = AM33XX_MODULEMODE_SWCTRL_SHIFT, + .clkdm_name = "clk_24mhz_clkdm", +}; + +DEFINE_STRUCT_CLK(clkdiv32k_ick, clkdiv32k_ick_parent_names, clkdiv32k_ick_ops); /* "usbotg_fck" is an additional clock and not really a modulemode */ DEFINE_CLK_GATE(usbotg_fck, "dpll_per_ck", &dpll_per_ck, 0x0, diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index d25a95fe9921..7341eff63f56 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -1356,13 +1356,27 @@ static void _enable_sysc(struct omap_hwmod *oh) clkdm = _get_clkdm(oh); if (sf & SYSC_HAS_SIDLEMODE) { + if (oh->flags & HWMOD_SWSUP_SIDLE || + oh->flags & HWMOD_SWSUP_SIDLE_ACT) { + idlemode = HWMOD_IDLEMODE_NO; + } else { + if (sf & SYSC_HAS_ENAWAKEUP) + _enable_wakeup(oh, &v); + if (oh->class->sysc->idlemodes & SIDLE_SMART_WKUP) + idlemode = HWMOD_IDLEMODE_SMART_WKUP; + else + idlemode = HWMOD_IDLEMODE_SMART; + } + + /* + * This is special handling for some IPs like + * 32k sync timer. Force them to idle! + */ clkdm_act = (clkdm && clkdm->flags & CLKDM_ACTIVE_WITH_MPU); if (clkdm_act && !(oh->class->sysc->idlemodes & (SIDLE_SMART | SIDLE_SMART_WKUP))) idlemode = HWMOD_IDLEMODE_FORCE; - else - idlemode = (oh->flags & HWMOD_SWSUP_SIDLE) ? - HWMOD_IDLEMODE_NO : HWMOD_IDLEMODE_SMART; + _set_slave_idlemode(oh, idlemode, &v); } @@ -1391,10 +1405,6 @@ static void _enable_sysc(struct omap_hwmod *oh) (sf & SYSC_HAS_CLOCKACTIVITY)) _set_clockactivity(oh, oh->class->sysc->clockact, &v); - /* If slave is in SMARTIDLE, also enable wakeup */ - if ((sf & SYSC_HAS_SIDLEMODE) && !(oh->flags & HWMOD_SWSUP_SIDLE)) - _enable_wakeup(oh, &v); - _write_sysconfig(v, oh); /* @@ -1430,13 +1440,16 @@ static void _idle_sysc(struct omap_hwmod *oh) sf = oh->class->sysc->sysc_flags; if (sf & SYSC_HAS_SIDLEMODE) { - /* XXX What about HWMOD_IDLEMODE_SMART_WKUP? */ - if (oh->flags & HWMOD_SWSUP_SIDLE || - !(oh->class->sysc->idlemodes & - (SIDLE_SMART | SIDLE_SMART_WKUP))) + if (oh->flags & HWMOD_SWSUP_SIDLE) { idlemode = HWMOD_IDLEMODE_FORCE; - else - idlemode = HWMOD_IDLEMODE_SMART; + } else { + if (sf & SYSC_HAS_ENAWAKEUP) + _enable_wakeup(oh, &v); + if (oh->class->sysc->idlemodes & SIDLE_SMART_WKUP) + idlemode = HWMOD_IDLEMODE_SMART_WKUP; + else + idlemode = HWMOD_IDLEMODE_SMART; + } _set_slave_idlemode(oh, idlemode, &v); } @@ -1455,10 +1468,6 @@ static void _idle_sysc(struct omap_hwmod *oh) _set_master_standbymode(oh, idlemode, &v); } - /* If slave is in SMARTIDLE, also enable wakeup */ - if ((sf & SYSC_HAS_SIDLEMODE) && !(oh->flags & HWMOD_SWSUP_SIDLE)) - _enable_wakeup(oh, &v); - _write_sysconfig(v, oh); } @@ -2065,7 +2074,7 @@ static int _omap4_get_context_lost(struct omap_hwmod *oh) * do so is present in the hwmod data, then call it and pass along the * return value; otherwise, return 0. */ -static int __init _enable_preprogram(struct omap_hwmod *oh) +static int _enable_preprogram(struct omap_hwmod *oh) { if (!oh->class->enable_preprogram) return 0; @@ -2246,42 +2255,6 @@ static int _idle(struct omap_hwmod *oh) } /** - * omap_hwmod_set_ocp_autoidle - set the hwmod's OCP autoidle bit - * @oh: struct omap_hwmod * - * @autoidle: desired AUTOIDLE bitfield value (0 or 1) - * - * Sets the IP block's OCP autoidle bit in hardware, and updates our - * local copy. Intended to be used by drivers that require - * direct manipulation of the AUTOIDLE bits. - * Returns -EINVAL if @oh is null or is not in the ENABLED state, or passes - * along the return value from _set_module_autoidle(). - * - * Any users of this function should be scrutinized carefully. - */ -int omap_hwmod_set_ocp_autoidle(struct omap_hwmod *oh, u8 autoidle) -{ - u32 v; - int retval = 0; - unsigned long flags; - - if (!oh || oh->_state != _HWMOD_STATE_ENABLED) - return -EINVAL; - - spin_lock_irqsave(&oh->_lock, flags); - - v = oh->_sysc_cache; - - retval = _set_module_autoidle(oh, autoidle, &v); - - if (!retval) - _write_sysconfig(v, oh); - - spin_unlock_irqrestore(&oh->_lock, flags); - - return retval; -} - -/** * _shutdown - shutdown an omap_hwmod * @oh: struct omap_hwmod * * @@ -3180,38 +3153,6 @@ error: } /** - * omap_hwmod_set_slave_idlemode - set the hwmod's OCP slave idlemode - * @oh: struct omap_hwmod * - * @idlemode: SIDLEMODE field bits (shifted to bit 0) - * - * Sets the IP block's OCP slave idlemode in hardware, and updates our - * local copy. Intended to be used by drivers that have some erratum - * that requires direct manipulation of the SIDLEMODE bits. Returns - * -EINVAL if @oh is null, or passes along the return value from - * _set_slave_idlemode(). - * - * XXX Does this function have any current users? If not, we should - * remove it; it is better to let the rest of the hwmod code handle this. - * Any users of this function should be scrutinized carefully. - */ -int omap_hwmod_set_slave_idlemode(struct omap_hwmod *oh, u8 idlemode) -{ - u32 v; - int retval = 0; - - if (!oh) - return -EINVAL; - - v = oh->_sysc_cache; - - retval = _set_slave_idlemode(oh, idlemode, &v); - if (!retval) - _write_sysconfig(v, oh); - - return retval; -} - -/** * omap_hwmod_lookup - look up a registered omap_hwmod by name * @name: name of the omap_hwmod to look up * diff --git a/arch/arm/mach-omap2/omap_hwmod.h b/arch/arm/mach-omap2/omap_hwmod.h index fe5962921f07..0c898f58ac9b 100644 --- a/arch/arm/mach-omap2/omap_hwmod.h +++ b/arch/arm/mach-omap2/omap_hwmod.h @@ -463,6 +463,9 @@ struct omap_hwmod_omap4_prcm { * is kept in force-standby mode. Failing to do so causes PM problems * with musb on OMAP3630 at least. Note that musb has a dedicated register * to control MSTANDBY signal when MIDLEMODE is set to force-standby. + * HWMOD_SWSUP_SIDLE_ACT: omap_hwmod code should manually bring the module + * out of idle, but rely on smart-idle to the put it back in idle, + * so the wakeups are still functional (Only known case for now is UART) */ #define HWMOD_SWSUP_SIDLE (1 << 0) #define HWMOD_SWSUP_MSTANDBY (1 << 1) @@ -476,6 +479,7 @@ struct omap_hwmod_omap4_prcm { #define HWMOD_EXT_OPT_MAIN_CLK (1 << 9) #define HWMOD_BLOCK_WFI (1 << 10) #define HWMOD_FORCE_MSTANDBY (1 << 11) +#define HWMOD_SWSUP_SIDLE_ACT (1 << 12) /* * omap_hwmod._int_flags definitions @@ -641,9 +645,6 @@ int omap_hwmod_read_hardreset(struct omap_hwmod *oh, const char *name); int omap_hwmod_enable_clocks(struct omap_hwmod *oh); int omap_hwmod_disable_clocks(struct omap_hwmod *oh); -int omap_hwmod_set_slave_idlemode(struct omap_hwmod *oh, u8 idlemode); -int omap_hwmod_set_ocp_autoidle(struct omap_hwmod *oh, u8 autoidle); - int omap_hwmod_reset(struct omap_hwmod *oh); void omap_hwmod_ocp_barrier(struct omap_hwmod *oh); diff --git a/arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c b/arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c index c8c64b3e1acc..d05fc7b54567 100644 --- a/arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c @@ -512,6 +512,7 @@ struct omap_hwmod omap2xxx_uart1_hwmod = { .mpu_irqs = omap2_uart1_mpu_irqs, .sdma_reqs = omap2_uart1_sdma_reqs, .main_clk = "uart1_fck", + .flags = HWMOD_SWSUP_SIDLE_ACT, .prcm = { .omap2 = { .module_offs = CORE_MOD, @@ -531,6 +532,7 @@ struct omap_hwmod omap2xxx_uart2_hwmod = { .mpu_irqs = omap2_uart2_mpu_irqs, .sdma_reqs = omap2_uart2_sdma_reqs, .main_clk = "uart2_fck", + .flags = HWMOD_SWSUP_SIDLE_ACT, .prcm = { .omap2 = { .module_offs = CORE_MOD, @@ -550,6 +552,7 @@ struct omap_hwmod omap2xxx_uart3_hwmod = { .mpu_irqs = omap2_uart3_mpu_irqs, .sdma_reqs = omap2_uart3_sdma_reqs, .main_clk = "uart3_fck", + .flags = HWMOD_SWSUP_SIDLE_ACT, .prcm = { .omap2 = { .module_offs = CORE_MOD, diff --git a/arch/arm/mach-omap2/omap_hwmod_33xx_data.c b/arch/arm/mach-omap2/omap_hwmod_33xx_data.c index 01d8f324450a..075f7cc51026 100644 --- a/arch/arm/mach-omap2/omap_hwmod_33xx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_33xx_data.c @@ -1995,6 +1995,7 @@ static struct omap_hwmod am33xx_uart1_hwmod = { .name = "uart1", .class = &uart_class, .clkdm_name = "l4_wkup_clkdm", + .flags = HWMOD_SWSUP_SIDLE_ACT, .mpu_irqs = am33xx_uart1_irqs, .sdma_reqs = uart1_edma_reqs, .main_clk = "dpll_per_m2_div4_wkupdm_ck", @@ -2015,6 +2016,7 @@ static struct omap_hwmod am33xx_uart2_hwmod = { .name = "uart2", .class = &uart_class, .clkdm_name = "l4ls_clkdm", + .flags = HWMOD_SWSUP_SIDLE_ACT, .mpu_irqs = am33xx_uart2_irqs, .sdma_reqs = uart1_edma_reqs, .main_clk = "dpll_per_m2_div4_ck", @@ -2042,6 +2044,7 @@ static struct omap_hwmod am33xx_uart3_hwmod = { .name = "uart3", .class = &uart_class, .clkdm_name = "l4ls_clkdm", + .flags = HWMOD_SWSUP_SIDLE_ACT, .mpu_irqs = am33xx_uart3_irqs, .sdma_reqs = uart3_edma_reqs, .main_clk = "dpll_per_m2_div4_ck", @@ -2062,6 +2065,7 @@ static struct omap_hwmod am33xx_uart4_hwmod = { .name = "uart4", .class = &uart_class, .clkdm_name = "l4ls_clkdm", + .flags = HWMOD_SWSUP_SIDLE_ACT, .mpu_irqs = am33xx_uart4_irqs, .sdma_reqs = uart1_edma_reqs, .main_clk = "dpll_per_m2_div4_ck", @@ -2082,6 +2086,7 @@ static struct omap_hwmod am33xx_uart5_hwmod = { .name = "uart5", .class = &uart_class, .clkdm_name = "l4ls_clkdm", + .flags = HWMOD_SWSUP_SIDLE_ACT, .mpu_irqs = am33xx_uart5_irqs, .sdma_reqs = uart1_edma_reqs, .main_clk = "dpll_per_m2_div4_ck", @@ -2102,6 +2107,7 @@ static struct omap_hwmod am33xx_uart6_hwmod = { .name = "uart6", .class = &uart_class, .clkdm_name = "l4ls_clkdm", + .flags = HWMOD_SWSUP_SIDLE_ACT, .mpu_irqs = am33xx_uart6_irqs, .sdma_reqs = uart1_edma_reqs, .main_clk = "dpll_per_m2_div4_ck", diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c index 4083606ea1da..31c7126eb3bb 100644 --- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c @@ -490,6 +490,7 @@ static struct omap_hwmod omap3xxx_uart1_hwmod = { .mpu_irqs = omap2_uart1_mpu_irqs, .sdma_reqs = omap2_uart1_sdma_reqs, .main_clk = "uart1_fck", + .flags = HWMOD_SWSUP_SIDLE_ACT, .prcm = { .omap2 = { .module_offs = CORE_MOD, @@ -508,6 +509,7 @@ static struct omap_hwmod omap3xxx_uart2_hwmod = { .mpu_irqs = omap2_uart2_mpu_irqs, .sdma_reqs = omap2_uart2_sdma_reqs, .main_clk = "uart2_fck", + .flags = HWMOD_SWSUP_SIDLE_ACT, .prcm = { .omap2 = { .module_offs = CORE_MOD, @@ -526,6 +528,7 @@ static struct omap_hwmod omap3xxx_uart3_hwmod = { .mpu_irqs = omap2_uart3_mpu_irqs, .sdma_reqs = omap2_uart3_sdma_reqs, .main_clk = "uart3_fck", + .flags = HWMOD_SWSUP_SIDLE_ACT, .prcm = { .omap2 = { .module_offs = OMAP3430_PER_MOD, @@ -555,6 +558,7 @@ static struct omap_hwmod omap36xx_uart4_hwmod = { .mpu_irqs = uart4_mpu_irqs, .sdma_reqs = uart4_sdma_reqs, .main_clk = "uart4_fck", + .flags = HWMOD_SWSUP_SIDLE_ACT, .prcm = { .omap2 = { .module_offs = OMAP3430_PER_MOD, diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c index eaba9dc91a0d..848b6dc67590 100644 --- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c @@ -3434,6 +3434,7 @@ static struct omap_hwmod omap44xx_uart1_hwmod = { .name = "uart1", .class = &omap44xx_uart_hwmod_class, .clkdm_name = "l4_per_clkdm", + .flags = HWMOD_SWSUP_SIDLE_ACT, .mpu_irqs = omap44xx_uart1_irqs, .sdma_reqs = omap44xx_uart1_sdma_reqs, .main_clk = "func_48m_fclk", @@ -3462,6 +3463,7 @@ static struct omap_hwmod omap44xx_uart2_hwmod = { .name = "uart2", .class = &omap44xx_uart_hwmod_class, .clkdm_name = "l4_per_clkdm", + .flags = HWMOD_SWSUP_SIDLE_ACT, .mpu_irqs = omap44xx_uart2_irqs, .sdma_reqs = omap44xx_uart2_sdma_reqs, .main_clk = "func_48m_fclk", @@ -3490,7 +3492,8 @@ static struct omap_hwmod omap44xx_uart3_hwmod = { .name = "uart3", .class = &omap44xx_uart_hwmod_class, .clkdm_name = "l4_per_clkdm", - .flags = HWMOD_INIT_NO_IDLE | HWMOD_INIT_NO_RESET, + .flags = HWMOD_INIT_NO_IDLE | HWMOD_INIT_NO_RESET | + HWMOD_SWSUP_SIDLE_ACT, .mpu_irqs = omap44xx_uart3_irqs, .sdma_reqs = omap44xx_uart3_sdma_reqs, .main_clk = "func_48m_fclk", @@ -3519,6 +3522,7 @@ static struct omap_hwmod omap44xx_uart4_hwmod = { .name = "uart4", .class = &omap44xx_uart_hwmod_class, .clkdm_name = "l4_per_clkdm", + .flags = HWMOD_SWSUP_SIDLE_ACT, .mpu_irqs = omap44xx_uart4_irqs, .sdma_reqs = omap44xx_uart4_sdma_reqs, .main_clk = "func_48m_fclk", diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c index 8396b5b7e912..f6601563aa69 100644 --- a/arch/arm/mach-omap2/serial.c +++ b/arch/arm/mach-omap2/serial.c @@ -95,38 +95,9 @@ static void omap_uart_enable_wakeup(struct device *dev, bool enable) omap_hwmod_disable_wakeup(od->hwmods[0]); } -/* - * Errata i291: [UART]:Cannot Acknowledge Idle Requests - * in Smartidle Mode When Configured for DMA Operations. - * WA: configure uart in force idle mode. - */ -static void omap_uart_set_noidle(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - struct omap_device *od = to_omap_device(pdev); - - omap_hwmod_set_slave_idlemode(od->hwmods[0], HWMOD_IDLEMODE_NO); -} - -static void omap_uart_set_smartidle(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - struct omap_device *od = to_omap_device(pdev); - u8 idlemode; - - if (od->hwmods[0]->class->sysc->idlemodes & SIDLE_SMART_WKUP) - idlemode = HWMOD_IDLEMODE_SMART_WKUP; - else - idlemode = HWMOD_IDLEMODE_SMART; - - omap_hwmod_set_slave_idlemode(od->hwmods[0], idlemode); -} - #else static void omap_uart_enable_wakeup(struct device *dev, bool enable) {} -static void omap_uart_set_noidle(struct device *dev) {} -static void omap_uart_set_smartidle(struct device *dev) {} #endif /* CONFIG_PM */ #ifdef CONFIG_OMAP_MUX @@ -299,8 +270,6 @@ void __init omap_serial_init_port(struct omap_board_data *bdata, omap_up.uartclk = OMAP24XX_BASE_BAUD * 16; omap_up.flags = UPF_BOOT_AUTOCONF; omap_up.get_context_loss_count = omap_pm_get_dev_context_loss_count; - omap_up.set_forceidle = omap_uart_set_smartidle; - omap_up.set_noidle = omap_uart_set_noidle; omap_up.enable_wakeup = omap_uart_enable_wakeup; omap_up.dma_rx_buf_size = info->dma_rx_buf_size; omap_up.dma_rx_timeout = info->dma_rx_timeout; diff --git a/arch/arm/mach-orion5x/common.c b/arch/arm/mach-orion5x/common.c index b97fd672e89d..f8a6db9239bf 100644 --- a/arch/arm/mach-orion5x/common.c +++ b/arch/arm/mach-orion5x/common.c @@ -199,13 +199,6 @@ void __init orion5x_init_early(void) orion_time_set_base(TIMER_VIRT_BASE); - /* - * Some Orion5x devices allocate their coherent buffers from atomic - * context. Increase size of atomic coherent pool to make sure such - * the allocations won't fail. - */ - init_dma_coherent_pool_size(SZ_1M); - /* Initialize the MBUS driver */ orion5x_pcie_id(&dev, &rev); if (dev == MV88F5281_DEV_ID) diff --git a/arch/arm/mach-shmobile/board-marzen.c b/arch/arm/mach-shmobile/board-marzen.c index 91052855cc12..b9594e911ce7 100644 --- a/arch/arm/mach-shmobile/board-marzen.c +++ b/arch/arm/mach-shmobile/board-marzen.c @@ -212,8 +212,8 @@ static struct platform_device *marzen_devices[] __initdata = { static struct usb_phy *phy; static int usb_power_on(struct platform_device *pdev) { - if (!phy) - return -EIO; + if (IS_ERR(phy)) + return PTR_ERR(phy); pm_runtime_enable(&pdev->dev); pm_runtime_get_sync(&pdev->dev); @@ -225,7 +225,7 @@ static int usb_power_on(struct platform_device *pdev) static void usb_power_off(struct platform_device *pdev) { - if (!phy) + if (IS_ERR(phy)) return; usb_phy_shutdown(phy); diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig index d259c782d742..5b045e302b43 100644 --- a/arch/arm/mach-sunxi/Kconfig +++ b/arch/arm/mach-sunxi/Kconfig @@ -1,5 +1,6 @@ config ARCH_SUNXI bool "Allwinner A1X SOCs" if ARCH_MULTI_V7 + select ARCH_REQUIRE_GPIOLIB select CLKSRC_MMIO select CLKSRC_OF select COMMON_CLK diff --git a/arch/arm/mach-ux500/Kconfig b/arch/arm/mach-ux500/Kconfig index 6a4387e39df8..b19b07204aaf 100644 --- a/arch/arm/mach-ux500/Kconfig +++ b/arch/arm/mach-ux500/Kconfig @@ -51,6 +51,7 @@ config MACH_MOP500 bool "U8500 Development platform, MOP500 versions" select I2C select I2C_NOMADIK + select REGULATOR select REGULATOR_FIXED_VOLTAGE select SOC_BUS select UX500_SOC_DB8500 diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c index 3cd555ac6d0a..78389de94dde 100644 --- a/arch/arm/mach-ux500/board-mop500.c +++ b/arch/arm/mach-ux500/board-mop500.c @@ -623,7 +623,7 @@ static void __init mop500_init_machine(void) sdi0_reg_info.gpios[0].gpio = GPIO_SDMMC_1V8_3V_SEL; mop500_pinmaps_init(); - parent = u8500_init_devices(&ab8500_platdata); + parent = u8500_init_devices(); for (i = 0; i < ARRAY_SIZE(mop500_platform_devs); i++) mop500_platform_devs[i]->dev.parent = parent; @@ -660,7 +660,7 @@ static void __init snowball_init_machine(void) sdi0_reg_info.gpios[0].gpio = SNOWBALL_SDMMC_1V8_3V_GPIO; snowball_pinmaps_init(); - parent = u8500_init_devices(&ab8500_platdata); + parent = u8500_init_devices(); for (i = 0; i < ARRAY_SIZE(snowball_platform_devs); i++) snowball_platform_devs[i]->dev.parent = parent; @@ -698,7 +698,7 @@ static void __init hrefv60_init_machine(void) sdi0_reg_info.gpios[0].gpio = HREFV60_SDMMC_1V8_3V_GPIO; hrefv60_pinmaps_init(); - parent = u8500_init_devices(&ab8500_platdata); + parent = u8500_init_devices(); for (i = 0; i < ARRAY_SIZE(mop500_platform_devs); i++) mop500_platform_devs[i]->dev.parent = parent; diff --git a/arch/arm/mach-ux500/cpu-db8500.c b/arch/arm/mach-ux500/cpu-db8500.c index e90b5ab23b6d..46cca52890bc 100644 --- a/arch/arm/mach-ux500/cpu-db8500.c +++ b/arch/arm/mach-ux500/cpu-db8500.c @@ -206,7 +206,7 @@ static struct device * __init db8500_soc_device_init(void) /* * This function is called from the board init */ -struct device * __init u8500_init_devices(struct ab8500_platform_data *ab8500) +struct device * __init u8500_init_devices(void) { struct device *parent; int i; @@ -220,8 +220,6 @@ struct device * __init u8500_init_devices(struct ab8500_platform_data *ab8500) for (i = 0; i < ARRAY_SIZE(platform_devs); i++) platform_devs[i]->dev.parent = parent; - db8500_prcmu_device.dev.platform_data = ab8500; - platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs)); return parent; @@ -278,7 +276,7 @@ static struct of_dev_auxdata u8500_auxdata_lookup[] __initdata = { OF_DEV_AUXDATA("st,nomadik-i2c", 0x8012a000, "nmk-i2c.4", NULL), OF_DEV_AUXDATA("stericsson,db8500-prcmu", 0x80157000, "db8500-prcmu", &db8500_prcmu_pdata), - OF_DEV_AUXDATA("smsc,lan9115", 0x50000000, "smsc911x", NULL), + OF_DEV_AUXDATA("smsc,lan9115", 0x50000000, "smsc911x.0", NULL), /* Requires device name bindings. */ OF_DEV_AUXDATA("stericsson,nmk-pinctrl", U8500_PRCMU_BASE, "pinctrl-db8500", NULL), diff --git a/arch/arm/mach-ux500/setup.h b/arch/arm/mach-ux500/setup.h index bddce2b49372..cad3ca86c540 100644 --- a/arch/arm/mach-ux500/setup.h +++ b/arch/arm/mach-ux500/setup.h @@ -18,7 +18,7 @@ void __init ux500_map_io(void); extern void __init u8500_map_io(void); -extern struct device * __init u8500_init_devices(struct ab8500_platform_data *ab8500); +extern struct device * __init u8500_init_devices(void); extern void __init ux500_init_irq(void); extern void __init ux500_init_late(void); diff --git a/arch/arm/mach-vt8500/vt8500.c b/arch/arm/mach-vt8500/vt8500.c index 1dd281efc020..f5c33df7a597 100644 --- a/arch/arm/mach-vt8500/vt8500.c +++ b/arch/arm/mach-vt8500/vt8500.c @@ -173,6 +173,7 @@ static const char * const vt8500_dt_compat[] = { "wm,wm8505", "wm,wm8750", "wm,wm8850", + NULL }; DT_MACHINE_START(WMT_DT, "VIA/Wondermedia SoC (Device Tree Support)") diff --git a/arch/arm/plat-orion/common.c b/arch/arm/plat-orion/common.c index 251f827271e9..c019b7aaf776 100644 --- a/arch/arm/plat-orion/common.c +++ b/arch/arm/plat-orion/common.c @@ -383,7 +383,7 @@ static struct resource orion_ge10_shared_resources[] = { static struct platform_device orion_ge10_shared = { .name = MV643XX_ETH_SHARED_NAME, - .id = 1, + .id = 2, .dev = { .platform_data = &orion_ge10_shared_data, }, @@ -398,8 +398,8 @@ static struct resource orion_ge10_resources[] = { static struct platform_device orion_ge10 = { .name = MV643XX_ETH_NAME, - .id = 1, - .num_resources = 2, + .id = 2, + .num_resources = 1, .resource = orion_ge10_resources, .dev = { .coherent_dma_mask = DMA_BIT_MASK(32), @@ -432,7 +432,7 @@ static struct resource orion_ge11_shared_resources[] = { static struct platform_device orion_ge11_shared = { .name = MV643XX_ETH_SHARED_NAME, - .id = 1, + .id = 3, .dev = { .platform_data = &orion_ge11_shared_data, }, @@ -447,8 +447,8 @@ static struct resource orion_ge11_resources[] = { static struct platform_device orion_ge11 = { .name = MV643XX_ETH_NAME, - .id = 1, - .num_resources = 2, + .id = 3, + .num_resources = 1, .resource = orion_ge11_resources, .dev = { .coherent_dma_mask = DMA_BIT_MASK(32), diff --git a/arch/arm/plat-orion/include/plat/common.h b/arch/arm/plat-orion/include/plat/common.h index e06fc5fefa14..d9a24f605a2b 100644 --- a/arch/arm/plat-orion/include/plat/common.h +++ b/arch/arm/plat-orion/include/plat/common.h @@ -10,6 +10,7 @@ #ifndef __PLAT_COMMON_H #include <linux/mv643xx_eth.h> +#include <linux/platform_data/usb-ehci-orion.h> struct dsa_platform_data; struct mv_sata_platform_data; diff --git a/arch/arm/vfp/entry.S b/arch/arm/vfp/entry.S index 323ce1a62bbf..46e17492fd1f 100644 --- a/arch/arm/vfp/entry.S +++ b/arch/arm/vfp/entry.S @@ -60,7 +60,7 @@ ENTRY(vfp_testing_entry) str r11, [r10, #TI_PREEMPT] #endif ldr r0, VFP_arch_address - str r5, [r0] @ known non-zero value + str r0, [r0] @ set to non-zero value mov pc, r9 @ we have handled the fault ENDPROC(vfp_testing_entry) diff --git a/arch/score/mm/init.c b/arch/score/mm/init.c index d8f988a37d16..0940682ab38b 100644 --- a/arch/score/mm/init.c +++ b/arch/score/mm/init.c @@ -41,8 +41,6 @@ unsigned long empty_zero_page; EXPORT_SYMBOL_GPL(empty_zero_page); -static struct kcore_list kcore_mem, kcore_vmalloc; - static void setup_zero_page(void) { struct page *page; diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index ecb743bf05a5..536562c626a2 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -24,7 +24,7 @@ acpi-y += nvs.o # Power management related files acpi-y += wakeup.o acpi-y += sleep.o -acpi-$(CONFIG_PM) += device_pm.o +acpi-y += device_pm.o acpi-$(CONFIG_ACPI_SLEEP) += proc.o @@ -38,7 +38,6 @@ acpi-y += processor_core.o acpi-y += ec.o acpi-$(CONFIG_ACPI_DOCK) += dock.o acpi-y += pci_root.o pci_link.o pci_irq.o -acpi-y += csrt.o acpi-$(CONFIG_X86_INTEL_LPSS) += acpi_lpss.o acpi-y += acpi_platform.o acpi-y += power.o diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c index b1c95422ce74..652fd5ce303c 100644 --- a/drivers/acpi/acpi_lpss.c +++ b/drivers/acpi/acpi_lpss.c @@ -35,11 +35,16 @@ ACPI_MODULE_NAME("acpi_lpss"); struct lpss_device_desc { bool clk_required; - const char *clk_parent; + const char *clkdev_name; bool ltr_required; unsigned int prv_offset; }; +static struct lpss_device_desc lpss_dma_desc = { + .clk_required = true, + .clkdev_name = "hclk", +}; + struct lpss_private_data { void __iomem *mmio_base; resource_size_t mmio_size; @@ -49,7 +54,6 @@ struct lpss_private_data { static struct lpss_device_desc lpt_dev_desc = { .clk_required = true, - .clk_parent = "lpss_clk", .prv_offset = 0x800, .ltr_required = true, }; @@ -60,6 +64,9 @@ static struct lpss_device_desc lpt_sdio_dev_desc = { }; static const struct acpi_device_id acpi_lpss_device_ids[] = { + /* Generic LPSS devices */ + { "INTL9C60", (unsigned long)&lpss_dma_desc }, + /* Lynxpoint LPSS devices */ { "INT33C0", (unsigned long)&lpt_dev_desc }, { "INT33C1", (unsigned long)&lpt_dev_desc }, @@ -91,16 +98,27 @@ static int register_device_clock(struct acpi_device *adev, struct lpss_private_data *pdata) { const struct lpss_device_desc *dev_desc = pdata->dev_desc; + struct lpss_clk_data *clk_data; if (!lpss_clk_dev) lpt_register_clock_device(); - if (!dev_desc->clk_parent || !pdata->mmio_base + clk_data = platform_get_drvdata(lpss_clk_dev); + if (!clk_data) + return -ENODEV; + + if (dev_desc->clkdev_name) { + clk_register_clkdev(clk_data->clk, dev_desc->clkdev_name, + dev_name(&adev->dev)); + return 0; + } + + if (!pdata->mmio_base || pdata->mmio_size < dev_desc->prv_offset + LPSS_CLK_SIZE) return -ENODATA; pdata->clk = clk_register_gate(NULL, dev_name(&adev->dev), - dev_desc->clk_parent, 0, + clk_data->name, 0, pdata->mmio_base + dev_desc->prv_offset, 0, 0, NULL); if (IS_ERR(pdata->clk)) diff --git a/drivers/acpi/csrt.c b/drivers/acpi/csrt.c deleted file mode 100644 index 5c15a91faf0b..000000000000 --- a/drivers/acpi/csrt.c +++ /dev/null @@ -1,159 +0,0 @@ -/* - * Support for Core System Resources Table (CSRT) - * - * Copyright (C) 2013, Intel Corporation - * Authors: Mika Westerberg <mika.westerberg@linux.intel.com> - * Andy Shevchenko <andriy.shevchenko@linux.intel.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#define pr_fmt(fmt) "ACPI: CSRT: " fmt - -#include <linux/acpi.h> -#include <linux/device.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/sizes.h> - -ACPI_MODULE_NAME("CSRT"); - -static int __init acpi_csrt_parse_shared_info(struct platform_device *pdev, - const struct acpi_csrt_group *grp) -{ - const struct acpi_csrt_shared_info *si; - struct resource res[3]; - size_t nres; - int ret; - - memset(res, 0, sizeof(res)); - nres = 0; - - si = (const struct acpi_csrt_shared_info *)&grp[1]; - /* - * The peripherals that are listed on CSRT typically support only - * 32-bit addresses so we only use the low part of MMIO base for - * now. - */ - if (!si->mmio_base_high && si->mmio_base_low) { - /* - * There is no size of the memory resource in shared_info - * so we assume that it is 4k here. - */ - res[nres].start = si->mmio_base_low; - res[nres].end = res[0].start + SZ_4K - 1; - res[nres++].flags = IORESOURCE_MEM; - } - - if (si->gsi_interrupt) { - int irq = acpi_register_gsi(NULL, si->gsi_interrupt, - si->interrupt_mode, - si->interrupt_polarity); - res[nres].start = irq; - res[nres].end = irq; - res[nres++].flags = IORESOURCE_IRQ; - } - - if (si->base_request_line || si->num_handshake_signals) { - /* - * We pass the driver a DMA resource describing the range - * of request lines the device supports. - */ - res[nres].start = si->base_request_line; - res[nres].end = res[nres].start + si->num_handshake_signals - 1; - res[nres++].flags = IORESOURCE_DMA; - } - - ret = platform_device_add_resources(pdev, res, nres); - if (ret) { - if (si->gsi_interrupt) - acpi_unregister_gsi(si->gsi_interrupt); - return ret; - } - - return 0; -} - -static int __init -acpi_csrt_parse_resource_group(const struct acpi_csrt_group *grp) -{ - struct platform_device *pdev; - char vendor[5], name[16]; - int ret, i; - - vendor[0] = grp->vendor_id; - vendor[1] = grp->vendor_id >> 8; - vendor[2] = grp->vendor_id >> 16; - vendor[3] = grp->vendor_id >> 24; - vendor[4] = '\0'; - - if (grp->shared_info_length != sizeof(struct acpi_csrt_shared_info)) - return -ENODEV; - - snprintf(name, sizeof(name), "%s%04X", vendor, grp->device_id); - pdev = platform_device_alloc(name, PLATFORM_DEVID_AUTO); - if (!pdev) - return -ENOMEM; - - /* Add resources based on the shared info */ - ret = acpi_csrt_parse_shared_info(pdev, grp); - if (ret) - goto fail; - - ret = platform_device_add(pdev); - if (ret) - goto fail; - - for (i = 0; i < pdev->num_resources; i++) - dev_dbg(&pdev->dev, "%pR\n", &pdev->resource[i]); - - return 0; - -fail: - platform_device_put(pdev); - return ret; -} - -/* - * CSRT or Core System Resources Table is a proprietary ACPI table - * introduced by Microsoft. This table can contain devices that are not in - * the system DSDT table. In particular DMA controllers might be described - * here. - * - * We present these devices as normal platform devices that don't have ACPI - * IDs or handle. The platform device name will be something like - * <VENDOR><DEVID>.<n>.auto for example: INTL9C06.0.auto. - */ -void __init acpi_csrt_init(void) -{ - struct acpi_csrt_group *grp, *end; - struct acpi_table_csrt *csrt; - acpi_status status; - int ret; - - status = acpi_get_table(ACPI_SIG_CSRT, 0, - (struct acpi_table_header **)&csrt); - if (ACPI_FAILURE(status)) { - if (status != AE_NOT_FOUND) - pr_warn("failed to get the CSRT table\n"); - return; - } - - pr_debug("parsing CSRT table for devices\n"); - - grp = (struct acpi_csrt_group *)(csrt + 1); - end = (struct acpi_csrt_group *)((void *)csrt + csrt->header.length); - - while (grp < end) { - ret = acpi_csrt_parse_resource_group(grp); - if (ret) { - pr_warn("error in parsing resource group: %d\n", ret); - return; - } - - grp = (struct acpi_csrt_group *)((void *)grp + grp->length); - } -} diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c index 96de787e6104..bc493aa3af19 100644 --- a/drivers/acpi/device_pm.c +++ b/drivers/acpi/device_pm.c @@ -37,68 +37,6 @@ #define _COMPONENT ACPI_POWER_COMPONENT ACPI_MODULE_NAME("device_pm"); -static DEFINE_MUTEX(acpi_pm_notifier_lock); - -/** - * acpi_add_pm_notifier - Register PM notifier for given ACPI device. - * @adev: ACPI device to add the notifier for. - * @context: Context information to pass to the notifier routine. - * - * NOTE: @adev need not be a run-wake or wakeup device to be a valid source of - * PM wakeup events. For example, wakeup events may be generated for bridges - * if one of the devices below the bridge is signaling wakeup, even if the - * bridge itself doesn't have a wakeup GPE associated with it. - */ -acpi_status acpi_add_pm_notifier(struct acpi_device *adev, - acpi_notify_handler handler, void *context) -{ - acpi_status status = AE_ALREADY_EXISTS; - - mutex_lock(&acpi_pm_notifier_lock); - - if (adev->wakeup.flags.notifier_present) - goto out; - - status = acpi_install_notify_handler(adev->handle, - ACPI_SYSTEM_NOTIFY, - handler, context); - if (ACPI_FAILURE(status)) - goto out; - - adev->wakeup.flags.notifier_present = true; - - out: - mutex_unlock(&acpi_pm_notifier_lock); - return status; -} - -/** - * acpi_remove_pm_notifier - Unregister PM notifier from given ACPI device. - * @adev: ACPI device to remove the notifier from. - */ -acpi_status acpi_remove_pm_notifier(struct acpi_device *adev, - acpi_notify_handler handler) -{ - acpi_status status = AE_BAD_PARAMETER; - - mutex_lock(&acpi_pm_notifier_lock); - - if (!adev->wakeup.flags.notifier_present) - goto out; - - status = acpi_remove_notify_handler(adev->handle, - ACPI_SYSTEM_NOTIFY, - handler); - if (ACPI_FAILURE(status)) - goto out; - - adev->wakeup.flags.notifier_present = false; - - out: - mutex_unlock(&acpi_pm_notifier_lock); - return status; -} - /** * acpi_power_state_string - String representation of ACPI device power state. * @state: ACPI device power state to return the string representation of. @@ -385,6 +323,69 @@ bool acpi_bus_power_manageable(acpi_handle handle) } EXPORT_SYMBOL(acpi_bus_power_manageable); +#ifdef CONFIG_PM +static DEFINE_MUTEX(acpi_pm_notifier_lock); + +/** + * acpi_add_pm_notifier - Register PM notifier for given ACPI device. + * @adev: ACPI device to add the notifier for. + * @context: Context information to pass to the notifier routine. + * + * NOTE: @adev need not be a run-wake or wakeup device to be a valid source of + * PM wakeup events. For example, wakeup events may be generated for bridges + * if one of the devices below the bridge is signaling wakeup, even if the + * bridge itself doesn't have a wakeup GPE associated with it. + */ +acpi_status acpi_add_pm_notifier(struct acpi_device *adev, + acpi_notify_handler handler, void *context) +{ + acpi_status status = AE_ALREADY_EXISTS; + + mutex_lock(&acpi_pm_notifier_lock); + + if (adev->wakeup.flags.notifier_present) + goto out; + + status = acpi_install_notify_handler(adev->handle, + ACPI_SYSTEM_NOTIFY, + handler, context); + if (ACPI_FAILURE(status)) + goto out; + + adev->wakeup.flags.notifier_present = true; + + out: + mutex_unlock(&acpi_pm_notifier_lock); + return status; +} + +/** + * acpi_remove_pm_notifier - Unregister PM notifier from given ACPI device. + * @adev: ACPI device to remove the notifier from. + */ +acpi_status acpi_remove_pm_notifier(struct acpi_device *adev, + acpi_notify_handler handler) +{ + acpi_status status = AE_BAD_PARAMETER; + + mutex_lock(&acpi_pm_notifier_lock); + + if (!adev->wakeup.flags.notifier_present) + goto out; + + status = acpi_remove_notify_handler(adev->handle, + ACPI_SYSTEM_NOTIFY, + handler); + if (ACPI_FAILURE(status)) + goto out; + + adev->wakeup.flags.notifier_present = false; + + out: + mutex_unlock(&acpi_pm_notifier_lock); + return status; +} + bool acpi_bus_can_wakeup(acpi_handle handle) { struct acpi_device *device; @@ -1023,3 +1024,4 @@ void acpi_dev_pm_remove_dependent(acpi_handle handle, struct device *depdev) mutex_unlock(&adev->physical_node_lock); } EXPORT_SYMBOL_GPL(acpi_dev_pm_remove_dependent); +#endif /* CONFIG_PM */ diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index 6f1afd9118c8..297cbf456f86 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -35,7 +35,6 @@ void acpi_pci_link_init(void); void acpi_pci_root_hp_init(void); void acpi_platform_init(void); int acpi_sysfs_init(void); -void acpi_csrt_init(void); #ifdef CONFIG_ACPI_CONTAINER void acpi_container_init(void); #else diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index c1bc608339a6..44225cb15f3a 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -2043,7 +2043,6 @@ int __init acpi_scan_init(void) acpi_pci_link_init(); acpi_platform_init(); acpi_lpss_init(); - acpi_csrt_init(); acpi_container_init(); acpi_memory_hotplug_init(); diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index 66f67626f02e..e6bd910bc6ed 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -161,6 +161,14 @@ static struct dmi_system_id video_detect_dmi_table[] = { DMI_MATCH(DMI_PRODUCT_NAME, "UL30VT"), }, }, + { + .callback = video_detect_force_vendor, + .ident = "Asus UL30A", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "UL30A"), + }, + }, { }, }; diff --git a/drivers/block/brd.c b/drivers/block/brd.c index f1a29f8e9d33..9bf4371755f2 100644 --- a/drivers/block/brd.c +++ b/drivers/block/brd.c @@ -117,13 +117,13 @@ static struct page *brd_insert_page(struct brd_device *brd, sector_t sector) spin_lock(&brd->brd_lock); idx = sector >> PAGE_SECTORS_SHIFT; + page->index = idx; if (radix_tree_insert(&brd->brd_pages, idx, page)) { __free_page(page); page = radix_tree_lookup(&brd->brd_pages, idx); BUG_ON(!page); BUG_ON(page->index != idx); - } else - page->index = idx; + } spin_unlock(&brd->brd_lock); radix_tree_preload_end(); diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c index f8ef15f37c5e..3fd130fdfbc1 100644 --- a/drivers/block/xsysace.c +++ b/drivers/block/xsysace.c @@ -1160,8 +1160,7 @@ static int ace_probe(struct platform_device *dev) dev_dbg(&dev->dev, "ace_probe(%p)\n", dev); /* device id and bus width */ - of_property_read_u32(dev->dev.of_node, "port-number", &id); - if (id < 0) + if (of_property_read_u32(dev->dev.of_node, "port-number", &id)) id = 0; if (of_find_property(dev->dev.of_node, "8-bit", NULL)) bus_width = ACE_BUS_WIDTH_8; diff --git a/drivers/char/random.c b/drivers/char/random.c index cd9a6211dcad..35487e8ded59 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -865,16 +865,24 @@ static size_t account(struct entropy_store *r, size_t nbytes, int min, if (r->entropy_count / 8 < min + reserved) { nbytes = 0; } else { + int entropy_count, orig; +retry: + entropy_count = orig = ACCESS_ONCE(r->entropy_count); /* If limited, never pull more than available */ - if (r->limit && nbytes + reserved >= r->entropy_count / 8) - nbytes = r->entropy_count/8 - reserved; - - if (r->entropy_count / 8 >= nbytes + reserved) - r->entropy_count -= nbytes*8; - else - r->entropy_count = reserved; + if (r->limit && nbytes + reserved >= entropy_count / 8) + nbytes = entropy_count/8 - reserved; + + if (entropy_count / 8 >= nbytes + reserved) { + entropy_count -= nbytes*8; + if (cmpxchg(&r->entropy_count, orig, entropy_count) != orig) + goto retry; + } else { + entropy_count = reserved; + if (cmpxchg(&r->entropy_count, orig, entropy_count) != orig) + goto retry; + } - if (r->entropy_count < random_write_wakeup_thresh) + if (entropy_count < random_write_wakeup_thresh) wakeup_write = 1; } @@ -957,10 +965,23 @@ static ssize_t extract_entropy(struct entropy_store *r, void *buf, { ssize_t ret = 0, i; __u8 tmp[EXTRACT_SIZE]; + unsigned long flags; /* if last_data isn't primed, we need EXTRACT_SIZE extra bytes */ - if (fips_enabled && !r->last_data_init) - nbytes += EXTRACT_SIZE; + if (fips_enabled) { + spin_lock_irqsave(&r->lock, flags); + if (!r->last_data_init) { + r->last_data_init = true; + spin_unlock_irqrestore(&r->lock, flags); + trace_extract_entropy(r->name, EXTRACT_SIZE, + r->entropy_count, _RET_IP_); + xfer_secondary_pool(r, EXTRACT_SIZE); + extract_buf(r, tmp); + spin_lock_irqsave(&r->lock, flags); + memcpy(r->last_data, tmp, EXTRACT_SIZE); + } + spin_unlock_irqrestore(&r->lock, flags); + } trace_extract_entropy(r->name, nbytes, r->entropy_count, _RET_IP_); xfer_secondary_pool(r, nbytes); @@ -970,19 +991,6 @@ static ssize_t extract_entropy(struct entropy_store *r, void *buf, extract_buf(r, tmp); if (fips_enabled) { - unsigned long flags; - - - /* prime last_data value if need be, per fips 140-2 */ - if (!r->last_data_init) { - spin_lock_irqsave(&r->lock, flags); - memcpy(r->last_data, tmp, EXTRACT_SIZE); - r->last_data_init = true; - nbytes -= EXTRACT_SIZE; - spin_unlock_irqrestore(&r->lock, flags); - extract_buf(r, tmp); - } - spin_lock_irqsave(&r->lock, flags); if (!memcmp(tmp, r->last_data, EXTRACT_SIZE)) panic("Hardware RNG duplicated output!\n"); diff --git a/drivers/clk/tegra/clk-tegra20.c b/drivers/clk/tegra/clk-tegra20.c index 8292a00c3de9..075db0c99edb 100644 --- a/drivers/clk/tegra/clk-tegra20.c +++ b/drivers/clk/tegra/clk-tegra20.c @@ -872,6 +872,14 @@ static void __init tegra20_periph_clk_init(void) struct clk *clk; int i; + /* ac97 */ + clk = tegra_clk_register_periph_gate("ac97", "pll_a_out0", + TEGRA_PERIPH_ON_APB, + clk_base, 0, 3, &periph_l_regs, + periph_clk_enb_refcnt); + clk_register_clkdev(clk, NULL, "tegra20-ac97"); + clks[ac97] = clk; + /* apbdma */ clk = tegra_clk_register_periph_gate("apbdma", "pclk", 0, clk_base, 0, 34, &periph_h_regs, @@ -1234,9 +1242,6 @@ static __initdata struct tegra_clk_init_table init_table[] = { {uartc, pll_p, 0, 0}, {uartd, pll_p, 0, 0}, {uarte, pll_p, 0, 0}, - {usbd, clk_max, 12000000, 0}, - {usb2, clk_max, 12000000, 0}, - {usb3, clk_max, 12000000, 0}, {pll_a, clk_max, 56448000, 1}, {pll_a_out0, clk_max, 11289600, 1}, {cdev1, clk_max, 0, 1}, diff --git a/drivers/clk/x86/clk-lpt.c b/drivers/clk/x86/clk-lpt.c index 5cf4f4686406..4f45eee9e33b 100644 --- a/drivers/clk/x86/clk-lpt.c +++ b/drivers/clk/x86/clk-lpt.c @@ -15,22 +15,29 @@ #include <linux/clk-provider.h> #include <linux/err.h> #include <linux/module.h> +#include <linux/platform_data/clk-lpss.h> #include <linux/platform_device.h> #define PRV_CLOCK_PARAMS 0x800 static int lpt_clk_probe(struct platform_device *pdev) { + struct lpss_clk_data *drvdata; struct clk *clk; + drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL); + if (!drvdata) + return -ENOMEM; + /* LPSS free running clock */ - clk = clk_register_fixed_rate(&pdev->dev, "lpss_clk", NULL, CLK_IS_ROOT, - 100000000); + drvdata->name = "lpss_clk"; + clk = clk_register_fixed_rate(&pdev->dev, drvdata->name, NULL, + CLK_IS_ROOT, 100000000); if (IS_ERR(clk)) return PTR_ERR(clk); - /* Shared DMA clock */ - clk_register_clkdev(clk, "hclk", "INTL9C60.0.auto"); + drvdata->clk = clk; + platform_set_drvdata(pdev, drvdata); return 0; } diff --git a/drivers/cpufreq/Kconfig.x86 b/drivers/cpufreq/Kconfig.x86 index 2b8a8c374548..6bd63d63d356 100644 --- a/drivers/cpufreq/Kconfig.x86 +++ b/drivers/cpufreq/Kconfig.x86 @@ -272,7 +272,7 @@ config X86_LONGHAUL config X86_E_POWERSAVER tristate "VIA C7 Enhanced PowerSaver (DANGEROUS)" select CPU_FREQ_TABLE - depends on X86_32 + depends on X86_32 && ACPI_PROCESSOR help This adds the CPUFreq driver for VIA C7 processors. However, this driver does not have any safeguards to prevent operating the CPU out of spec diff --git a/drivers/cpufreq/arm_big_little_dt.c b/drivers/cpufreq/arm_big_little_dt.c index 173ed059d95f..fd9e3ea6a480 100644 --- a/drivers/cpufreq/arm_big_little_dt.c +++ b/drivers/cpufreq/arm_big_little_dt.c @@ -19,70 +19,75 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt +#include <linux/cpu.h> #include <linux/cpufreq.h> #include <linux/device.h> #include <linux/export.h> #include <linux/module.h> #include <linux/of.h> #include <linux/opp.h> +#include <linux/platform_device.h> #include <linux/slab.h> #include <linux/types.h> #include "arm_big_little.h" -static int dt_init_opp_table(struct device *cpu_dev) +/* get cpu node with valid operating-points */ +static struct device_node *get_cpu_node_with_valid_op(int cpu) { - struct device_node *np, *parent; - int count = 0, ret; + struct device_node *np = NULL, *parent; + int count = 0; parent = of_find_node_by_path("/cpus"); if (!parent) { pr_err("failed to find OF /cpus\n"); - return -ENOENT; + return NULL; } for_each_child_of_node(parent, np) { - if (count++ != cpu_dev->id) + if (count++ != cpu) continue; if (!of_get_property(np, "operating-points", NULL)) { - ret = -ENODATA; - } else { - cpu_dev->of_node = np; - ret = of_init_opp_table(cpu_dev); + of_node_put(np); + np = NULL; } - of_node_put(np); - of_node_put(parent); - return ret; + break; } - return -ENODEV; + of_node_put(parent); + return np; +} + +static int dt_init_opp_table(struct device *cpu_dev) +{ + struct device_node *np; + int ret; + + np = get_cpu_node_with_valid_op(cpu_dev->id); + if (!np) + return -ENODATA; + + cpu_dev->of_node = np; + ret = of_init_opp_table(cpu_dev); + of_node_put(np); + + return ret; } static int dt_get_transition_latency(struct device *cpu_dev) { - struct device_node *np, *parent; + struct device_node *np; u32 transition_latency = CPUFREQ_ETERNAL; - int count = 0; - parent = of_find_node_by_path("/cpus"); - if (!parent) { - pr_info("Failed to find OF /cpus. Use CPUFREQ_ETERNAL transition latency\n"); + np = get_cpu_node_with_valid_op(cpu_dev->id); + if (!np) return CPUFREQ_ETERNAL; - } - - for_each_child_of_node(parent, np) { - if (count++ != cpu_dev->id) - continue; - of_property_read_u32(np, "clock-latency", &transition_latency); - of_node_put(np); - of_node_put(parent); + of_property_read_u32(np, "clock-latency", &transition_latency); + of_node_put(np); - return transition_latency; - } - - pr_info("clock-latency isn't found, use CPUFREQ_ETERNAL transition latency\n"); - return CPUFREQ_ETERNAL; + pr_debug("%s: clock-latency: %d\n", __func__, transition_latency); + return transition_latency; } static struct cpufreq_arm_bL_ops dt_bL_ops = { @@ -91,17 +96,33 @@ static struct cpufreq_arm_bL_ops dt_bL_ops = { .init_opp_table = dt_init_opp_table, }; -static int generic_bL_init(void) +static int generic_bL_probe(struct platform_device *pdev) { + struct device_node *np; + + np = get_cpu_node_with_valid_op(0); + if (!np) + return -ENODEV; + + of_node_put(np); return bL_cpufreq_register(&dt_bL_ops); } -module_init(generic_bL_init); -static void generic_bL_exit(void) +static int generic_bL_remove(struct platform_device *pdev) { - return bL_cpufreq_unregister(&dt_bL_ops); + bL_cpufreq_unregister(&dt_bL_ops); + return 0; } -module_exit(generic_bL_exit); + +static struct platform_driver generic_bL_platdrv = { + .driver = { + .name = "arm-bL-cpufreq-dt", + .owner = THIS_MODULE, + }, + .probe = generic_bL_probe, + .remove = generic_bL_remove, +}; +module_platform_driver(generic_bL_platdrv); MODULE_AUTHOR("Viresh Kumar <viresh.kumar@linaro.org>"); MODULE_DESCRIPTION("Generic ARM big LITTLE cpufreq driver via DT"); diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 4b8c7f297d74..2d53f47d1747 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1729,18 +1729,23 @@ static int __cpufreq_set_policy(struct cpufreq_policy *data, /* end old governor */ if (data->governor) { __cpufreq_governor(data, CPUFREQ_GOV_STOP); + unlock_policy_rwsem_write(policy->cpu); __cpufreq_governor(data, CPUFREQ_GOV_POLICY_EXIT); + lock_policy_rwsem_write(policy->cpu); } /* start new governor */ data->governor = policy->governor; if (!__cpufreq_governor(data, CPUFREQ_GOV_POLICY_INIT)) { - if (!__cpufreq_governor(data, CPUFREQ_GOV_START)) + if (!__cpufreq_governor(data, CPUFREQ_GOV_START)) { failed = 0; - else + } else { + unlock_policy_rwsem_write(policy->cpu); __cpufreq_governor(data, CPUFREQ_GOV_POLICY_EXIT); + lock_policy_rwsem_write(policy->cpu); + } } if (failed) { diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 9c36ace92a39..07f2840ad805 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -521,6 +521,7 @@ static void intel_pstate_timer_func(unsigned long __data) static const struct x86_cpu_id intel_pstate_cpu_ids[] = { ICPU(0x2a, default_policy), ICPU(0x2d, default_policy), + ICPU(0x3a, default_policy), {} }; MODULE_DEVICE_TABLE(x86cpu, intel_pstate_cpu_ids); diff --git a/drivers/dma/acpi-dma.c b/drivers/dma/acpi-dma.c index ba6fc62e9651..5a18f82f732a 100644 --- a/drivers/dma/acpi-dma.c +++ b/drivers/dma/acpi-dma.c @@ -4,7 +4,8 @@ * Based on of-dma.c * * Copyright (C) 2013, Intel Corporation - * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com> + * Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com> + * Mika Westerberg <mika.westerberg@linux.intel.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -16,6 +17,7 @@ #include <linux/list.h> #include <linux/mutex.h> #include <linux/slab.h> +#include <linux/ioport.h> #include <linux/acpi.h> #include <linux/acpi_dma.h> @@ -23,6 +25,117 @@ static LIST_HEAD(acpi_dma_list); static DEFINE_MUTEX(acpi_dma_lock); /** + * acpi_dma_parse_resource_group - match device and parse resource group + * @grp: CSRT resource group + * @adev: ACPI device to match with + * @adma: struct acpi_dma of the given DMA controller + * + * Returns 1 on success, 0 when no information is available, or appropriate + * errno value on error. + * + * In order to match a device from DSDT table to the corresponding CSRT device + * we use MMIO address and IRQ. + */ +static int acpi_dma_parse_resource_group(const struct acpi_csrt_group *grp, + struct acpi_device *adev, struct acpi_dma *adma) +{ + const struct acpi_csrt_shared_info *si; + struct list_head resource_list; + struct resource_list_entry *rentry; + resource_size_t mem = 0, irq = 0; + u32 vendor_id; + int ret; + + if (grp->shared_info_length != sizeof(struct acpi_csrt_shared_info)) + return -ENODEV; + + INIT_LIST_HEAD(&resource_list); + ret = acpi_dev_get_resources(adev, &resource_list, NULL, NULL); + if (ret <= 0) + return 0; + + list_for_each_entry(rentry, &resource_list, node) { + if (resource_type(&rentry->res) == IORESOURCE_MEM) + mem = rentry->res.start; + else if (resource_type(&rentry->res) == IORESOURCE_IRQ) + irq = rentry->res.start; + } + + acpi_dev_free_resource_list(&resource_list); + + /* Consider initial zero values as resource not found */ + if (mem == 0 && irq == 0) + return 0; + + si = (const struct acpi_csrt_shared_info *)&grp[1]; + + /* Match device by MMIO and IRQ */ + if (si->mmio_base_low != mem || si->gsi_interrupt != irq) + return 0; + + vendor_id = le32_to_cpu(grp->vendor_id); + dev_dbg(&adev->dev, "matches with %.4s%04X (rev %u)\n", + (char *)&vendor_id, grp->device_id, grp->revision); + + /* Check if the request line range is available */ + if (si->base_request_line == 0 && si->num_handshake_signals == 0) + return 0; + + adma->base_request_line = si->base_request_line; + adma->end_request_line = si->base_request_line + + si->num_handshake_signals - 1; + + dev_dbg(&adev->dev, "request line base: 0x%04x end: 0x%04x\n", + adma->base_request_line, adma->end_request_line); + + return 1; +} + +/** + * acpi_dma_parse_csrt - parse CSRT to exctract additional DMA resources + * @adev: ACPI device to match with + * @adma: struct acpi_dma of the given DMA controller + * + * CSRT or Core System Resources Table is a proprietary ACPI table + * introduced by Microsoft. This table can contain devices that are not in + * the system DSDT table. In particular DMA controllers might be described + * here. + * + * We are using this table to get the request line range of the specific DMA + * controller to be used later. + * + */ +static void acpi_dma_parse_csrt(struct acpi_device *adev, struct acpi_dma *adma) +{ + struct acpi_csrt_group *grp, *end; + struct acpi_table_csrt *csrt; + acpi_status status; + int ret; + + status = acpi_get_table(ACPI_SIG_CSRT, 0, + (struct acpi_table_header **)&csrt); + if (ACPI_FAILURE(status)) { + if (status != AE_NOT_FOUND) + dev_warn(&adev->dev, "failed to get the CSRT table\n"); + return; + } + + grp = (struct acpi_csrt_group *)(csrt + 1); + end = (struct acpi_csrt_group *)((void *)csrt + csrt->header.length); + + while (grp < end) { + ret = acpi_dma_parse_resource_group(grp, adev, adma); + if (ret < 0) { + dev_warn(&adev->dev, + "error in parsing resource group\n"); + return; + } + + grp = (struct acpi_csrt_group *)((void *)grp + grp->length); + } +} + +/** * acpi_dma_controller_register - Register a DMA controller to ACPI DMA helpers * @dev: struct device of DMA controller * @acpi_dma_xlate: translation function which converts a dma specifier @@ -61,6 +174,8 @@ int acpi_dma_controller_register(struct device *dev, adma->acpi_dma_xlate = acpi_dma_xlate; adma->data = data; + acpi_dma_parse_csrt(adev, adma); + /* Now queue acpi_dma controller structure in list */ mutex_lock(&acpi_dma_lock); list_add_tail(&adma->dma_controllers, &acpi_dma_list); @@ -149,6 +264,45 @@ void devm_acpi_dma_controller_free(struct device *dev) } EXPORT_SYMBOL_GPL(devm_acpi_dma_controller_free); +/** + * acpi_dma_update_dma_spec - prepare dma specifier to pass to translation function + * @adma: struct acpi_dma of DMA controller + * @dma_spec: dma specifier to update + * + * Returns 0, if no information is avaiable, -1 on mismatch, and 1 otherwise. + * + * Accordingly to ACPI 5.0 Specification Table 6-170 "Fixed DMA Resource + * Descriptor": + * DMA Request Line bits is a platform-relative number uniquely + * identifying the request line assigned. Request line-to-Controller + * mapping is done in a controller-specific OS driver. + * That's why we can safely adjust slave_id when the appropriate controller is + * found. + */ +static int acpi_dma_update_dma_spec(struct acpi_dma *adma, + struct acpi_dma_spec *dma_spec) +{ + /* Set link to the DMA controller device */ + dma_spec->dev = adma->dev; + + /* Check if the request line range is available */ + if (adma->base_request_line == 0 && adma->end_request_line == 0) + return 0; + + /* Check if slave_id falls to the range */ + if (dma_spec->slave_id < adma->base_request_line || + dma_spec->slave_id > adma->end_request_line) + return -1; + + /* + * Here we adjust slave_id. It should be a relative number to the base + * request line. + */ + dma_spec->slave_id -= adma->base_request_line; + + return 1; +} + struct acpi_dma_parser_data { struct acpi_dma_spec dma_spec; size_t index; @@ -193,6 +347,7 @@ struct dma_chan *acpi_dma_request_slave_chan_by_index(struct device *dev, struct acpi_device *adev; struct acpi_dma *adma; struct dma_chan *chan = NULL; + int found; /* Check if the device was enumerated by ACPI */ if (!dev || !ACPI_HANDLE(dev)) @@ -219,9 +374,20 @@ struct dma_chan *acpi_dma_request_slave_chan_by_index(struct device *dev, mutex_lock(&acpi_dma_lock); list_for_each_entry(adma, &acpi_dma_list, dma_controllers) { - dma_spec->dev = adma->dev; + /* + * We are not going to call translation function if slave_id + * doesn't fall to the request range. + */ + found = acpi_dma_update_dma_spec(adma, dma_spec); + if (found < 0) + continue; chan = adma->acpi_dma_xlate(dma_spec, adma); - if (chan) + /* + * Try to get a channel only from the DMA controller that + * matches the slave_id. See acpi_dma_update_dma_spec() + * description for the details. + */ + if (found > 0 || chan) break; } diff --git a/drivers/leds/leds-ot200.c b/drivers/leds/leds-ot200.c index ee14662ed5ce..98cae529373f 100644 --- a/drivers/leds/leds-ot200.c +++ b/drivers/leds/leds-ot200.c @@ -47,37 +47,37 @@ static struct ot200_led leds[] = { { .name = "led_1", .port = 0x49, - .mask = BIT(7), + .mask = BIT(6), }, { .name = "led_2", .port = 0x49, - .mask = BIT(6), + .mask = BIT(5), }, { .name = "led_3", .port = 0x49, - .mask = BIT(5), + .mask = BIT(4), }, { .name = "led_4", .port = 0x49, - .mask = BIT(4), + .mask = BIT(3), }, { .name = "led_5", .port = 0x49, - .mask = BIT(3), + .mask = BIT(2), }, { .name = "led_6", .port = 0x49, - .mask = BIT(2), + .mask = BIT(1), }, { .name = "led_7", .port = 0x49, - .mask = BIT(1), + .mask = BIT(0), } }; diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig index 0d0b5d7d19d0..7b8979c63f48 100644 --- a/drivers/power/Kconfig +++ b/drivers/power/Kconfig @@ -152,6 +152,7 @@ config BATTERY_SBS config BATTERY_BQ27x00 tristate "BQ27x00 battery driver" + depends on I2C || I2C=n help Say Y here to enable support for batteries with BQ27x00 (I2C/HDQ) chips. @@ -284,6 +285,7 @@ config CHARGER_LP8788 tristate "TI LP8788 charger driver" depends on MFD_LP8788 depends on LP8788_ADC + depends on IIO help Say Y to enable support for the LP8788 linear charger. diff --git a/drivers/power/pm2301_charger.c b/drivers/power/pm2301_charger.c index a44175139bbf..fef56e2041b3 100644 --- a/drivers/power/pm2301_charger.c +++ b/drivers/power/pm2301_charger.c @@ -1269,5 +1269,5 @@ module_exit(pm2xxx_charger_exit); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Rajkumar kasirajan, Olivier Launay"); -MODULE_ALIAS("platform:pm2xxx-charger"); +MODULE_ALIAS("i2c:pm2xxx-charger"); MODULE_DESCRIPTION("PM2xxx charger management driver"); diff --git a/drivers/power/wm831x_backup.c b/drivers/power/wm831x_backup.c index 58cbb009b74f..56fb509f4be0 100644 --- a/drivers/power/wm831x_backup.c +++ b/drivers/power/wm831x_backup.c @@ -207,7 +207,6 @@ static int wm831x_backup_remove(struct platform_device *pdev) struct wm831x_backup *devdata = platform_get_drvdata(pdev); power_supply_unregister(&devdata->backup); - kfree(devdata->backup.name); return 0; } diff --git a/drivers/rapidio/Kconfig b/drivers/rapidio/Kconfig index 6194d35ebb97..5ab056494bbe 100644 --- a/drivers/rapidio/Kconfig +++ b/drivers/rapidio/Kconfig @@ -47,4 +47,24 @@ config RAPIDIO_DEBUG If you are unsure about this, say N here. +choice + prompt "Enumeration method" + depends on RAPIDIO + default RAPIDIO_ENUM_BASIC + help + There are different enumeration and discovery mechanisms offered + for RapidIO subsystem. You may select single built-in method or + or any number of methods to be built as modules. + Selecting a built-in method disables use of loadable methods. + + If unsure, select Basic built-in. + +config RAPIDIO_ENUM_BASIC + tristate "Basic" + help + This option includes basic RapidIO fabric enumeration and discovery + mechanism similar to one described in RapidIO specification Annex 1. + +endchoice + source "drivers/rapidio/switches/Kconfig" diff --git a/drivers/rapidio/Makefile b/drivers/rapidio/Makefile index ec3fb8121004..3036702ffe8b 100644 --- a/drivers/rapidio/Makefile +++ b/drivers/rapidio/Makefile @@ -1,7 +1,8 @@ # # Makefile for RapidIO interconnect services # -obj-y += rio.o rio-access.o rio-driver.o rio-scan.o rio-sysfs.o +obj-y += rio.o rio-access.o rio-driver.o rio-sysfs.o +obj-$(CONFIG_RAPIDIO_ENUM_BASIC) += rio-scan.o obj-$(CONFIG_RAPIDIO) += switches/ obj-$(CONFIG_RAPIDIO) += devices/ diff --git a/drivers/rapidio/devices/tsi721.c b/drivers/rapidio/devices/tsi721.c index 6faba406b6e9..a8b2c23a7ef4 100644 --- a/drivers/rapidio/devices/tsi721.c +++ b/drivers/rapidio/devices/tsi721.c @@ -471,6 +471,10 @@ static irqreturn_t tsi721_irqhandler(int irq, void *ptr) u32 intval; u32 ch_inte; + /* For MSI mode disable all device-level interrupts */ + if (priv->flags & TSI721_USING_MSI) + iowrite32(0, priv->regs + TSI721_DEV_INTE); + dev_int = ioread32(priv->regs + TSI721_DEV_INT); if (!dev_int) return IRQ_NONE; @@ -560,6 +564,14 @@ static irqreturn_t tsi721_irqhandler(int irq, void *ptr) } } #endif + + /* For MSI mode re-enable device-level interrupts */ + if (priv->flags & TSI721_USING_MSI) { + dev_int = TSI721_DEV_INT_SR2PC_CH | TSI721_DEV_INT_SRIO | + TSI721_DEV_INT_SMSG_CH | TSI721_DEV_INT_BDMA_CH; + iowrite32(dev_int, priv->regs + TSI721_DEV_INTE); + } + return IRQ_HANDLED; } diff --git a/drivers/rapidio/rio-driver.c b/drivers/rapidio/rio-driver.c index 0f4a53bdaa3c..a0c875563d76 100644 --- a/drivers/rapidio/rio-driver.c +++ b/drivers/rapidio/rio-driver.c @@ -164,6 +164,13 @@ void rio_unregister_driver(struct rio_driver *rdrv) driver_unregister(&rdrv->driver); } +void rio_attach_device(struct rio_dev *rdev) +{ + rdev->dev.bus = &rio_bus_type; + rdev->dev.parent = &rio_bus; +} +EXPORT_SYMBOL_GPL(rio_attach_device); + /** * rio_match_bus - Tell if a RIO device structure has a matching RIO driver device id structure * @dev: the standard device structure to match against @@ -200,6 +207,7 @@ struct bus_type rio_bus_type = { .name = "rapidio", .match = rio_match_bus, .dev_attrs = rio_dev_attrs, + .bus_attrs = rio_bus_attrs, .probe = rio_device_probe, .remove = rio_device_remove, }; diff --git a/drivers/rapidio/rio-scan.c b/drivers/rapidio/rio-scan.c index a965acd3c0e4..4c15dbf81087 100644 --- a/drivers/rapidio/rio-scan.c +++ b/drivers/rapidio/rio-scan.c @@ -37,12 +37,8 @@ #include "rio.h" -LIST_HEAD(rio_devices); - static void rio_init_em(struct rio_dev *rdev); -DEFINE_SPINLOCK(rio_global_list_lock); - static int next_destid = 0; static int next_comptag = 1; @@ -327,127 +323,6 @@ static int rio_is_switch(struct rio_dev *rdev) } /** - * rio_switch_init - Sets switch operations for a particular vendor switch - * @rdev: RIO device - * @do_enum: Enumeration/Discovery mode flag - * - * Searches the RIO switch ops table for known switch types. If the vid - * and did match a switch table entry, then call switch initialization - * routine to setup switch-specific routines. - */ -static void rio_switch_init(struct rio_dev *rdev, int do_enum) -{ - struct rio_switch_ops *cur = __start_rio_switch_ops; - struct rio_switch_ops *end = __end_rio_switch_ops; - - while (cur < end) { - if ((cur->vid == rdev->vid) && (cur->did == rdev->did)) { - pr_debug("RIO: calling init routine for %s\n", - rio_name(rdev)); - cur->init_hook(rdev, do_enum); - break; - } - cur++; - } - - if ((cur >= end) && (rdev->pef & RIO_PEF_STD_RT)) { - pr_debug("RIO: adding STD routing ops for %s\n", - rio_name(rdev)); - rdev->rswitch->add_entry = rio_std_route_add_entry; - rdev->rswitch->get_entry = rio_std_route_get_entry; - rdev->rswitch->clr_table = rio_std_route_clr_table; - } - - if (!rdev->rswitch->add_entry || !rdev->rswitch->get_entry) - printk(KERN_ERR "RIO: missing routing ops for %s\n", - rio_name(rdev)); -} - -/** - * rio_add_device- Adds a RIO device to the device model - * @rdev: RIO device - * - * Adds the RIO device to the global device list and adds the RIO - * device to the RIO device list. Creates the generic sysfs nodes - * for an RIO device. - */ -static int rio_add_device(struct rio_dev *rdev) -{ - int err; - - err = device_add(&rdev->dev); - if (err) - return err; - - spin_lock(&rio_global_list_lock); - list_add_tail(&rdev->global_list, &rio_devices); - spin_unlock(&rio_global_list_lock); - - rio_create_sysfs_dev_files(rdev); - - return 0; -} - -/** - * rio_enable_rx_tx_port - enable input receiver and output transmitter of - * given port - * @port: Master port associated with the RIO network - * @local: local=1 select local port otherwise a far device is reached - * @destid: Destination ID of the device to check host bit - * @hopcount: Number of hops to reach the target - * @port_num: Port (-number on switch) to enable on a far end device - * - * Returns 0 or 1 from on General Control Command and Status Register - * (EXT_PTR+0x3C) - */ -inline int rio_enable_rx_tx_port(struct rio_mport *port, - int local, u16 destid, - u8 hopcount, u8 port_num) { -#ifdef CONFIG_RAPIDIO_ENABLE_RX_TX_PORTS - u32 regval; - u32 ext_ftr_ptr; - - /* - * enable rx input tx output port - */ - pr_debug("rio_enable_rx_tx_port(local = %d, destid = %d, hopcount = " - "%d, port_num = %d)\n", local, destid, hopcount, port_num); - - ext_ftr_ptr = rio_mport_get_physefb(port, local, destid, hopcount); - - if (local) { - rio_local_read_config_32(port, ext_ftr_ptr + - RIO_PORT_N_CTL_CSR(0), - ®val); - } else { - if (rio_mport_read_config_32(port, destid, hopcount, - ext_ftr_ptr + RIO_PORT_N_CTL_CSR(port_num), ®val) < 0) - return -EIO; - } - - if (regval & RIO_PORT_N_CTL_P_TYP_SER) { - /* serial */ - regval = regval | RIO_PORT_N_CTL_EN_RX_SER - | RIO_PORT_N_CTL_EN_TX_SER; - } else { - /* parallel */ - regval = regval | RIO_PORT_N_CTL_EN_RX_PAR - | RIO_PORT_N_CTL_EN_TX_PAR; - } - - if (local) { - rio_local_write_config_32(port, ext_ftr_ptr + - RIO_PORT_N_CTL_CSR(0), regval); - } else { - if (rio_mport_write_config_32(port, destid, hopcount, - ext_ftr_ptr + RIO_PORT_N_CTL_CSR(port_num), regval) < 0) - return -EIO; - } -#endif - return 0; -} - -/** * rio_setup_device- Allocates and sets up a RIO device * @net: RIO network * @port: Master port to send transactions @@ -587,8 +462,7 @@ static struct rio_dev *rio_setup_device(struct rio_net *net, rdev->destid); } - rdev->dev.bus = &rio_bus_type; - rdev->dev.parent = &rio_bus; + rio_attach_device(rdev); device_initialize(&rdev->dev); rdev->dev.release = rio_release_dev; @@ -1260,19 +1134,30 @@ static void rio_pw_enable(struct rio_mport *port, int enable) /** * rio_enum_mport- Start enumeration through a master port * @mport: Master port to send transactions + * @flags: Enumeration control flags * * Starts the enumeration process. If somebody has enumerated our * master port device, then give up. If not and we have an active * link, then start recursive peer enumeration. Returns %0 if * enumeration succeeds or %-EBUSY if enumeration fails. */ -int rio_enum_mport(struct rio_mport *mport) +int rio_enum_mport(struct rio_mport *mport, u32 flags) { struct rio_net *net = NULL; int rc = 0; printk(KERN_INFO "RIO: enumerate master port %d, %s\n", mport->id, mport->name); + + /* + * To avoid multiple start requests (repeat enumeration is not supported + * by this method) check if enumeration/discovery was performed for this + * mport: if mport was added into the list of mports for a net exit + * with error. + */ + if (mport->nnode.next || mport->nnode.prev) + return -EBUSY; + /* If somebody else enumerated our master port device, bail. */ if (rio_enum_host(mport) < 0) { printk(KERN_INFO @@ -1362,14 +1247,16 @@ static void rio_build_route_tables(struct rio_net *net) /** * rio_disc_mport- Start discovery through a master port * @mport: Master port to send transactions + * @flags: discovery control flags * * Starts the discovery process. If we have an active link, - * then wait for the signal that enumeration is complete. + * then wait for the signal that enumeration is complete (if wait + * is allowed). * When enumeration completion is signaled, start recursive * peer discovery. Returns %0 if discovery succeeds or %-EBUSY * on failure. */ -int rio_disc_mport(struct rio_mport *mport) +int rio_disc_mport(struct rio_mport *mport, u32 flags) { struct rio_net *net = NULL; unsigned long to_end; @@ -1379,6 +1266,11 @@ int rio_disc_mport(struct rio_mport *mport) /* If master port has an active link, allocate net and discover peers */ if (rio_mport_is_active(mport)) { + if (rio_enum_complete(mport)) + goto enum_done; + else if (flags & RIO_SCAN_ENUM_NO_WAIT) + return -EAGAIN; + pr_debug("RIO: wait for enumeration to complete...\n"); to_end = jiffies + CONFIG_RAPIDIO_DISC_TIMEOUT * HZ; @@ -1421,3 +1313,41 @@ enum_done: bail: return -EBUSY; } + +static struct rio_scan rio_scan_ops = { + .enumerate = rio_enum_mport, + .discover = rio_disc_mport, +}; + +static bool scan; +module_param(scan, bool, 0); +MODULE_PARM_DESC(scan, "Start RapidIO network enumeration/discovery " + "(default = 0)"); + +/** + * rio_basic_attach: + * + * When this enumeration/discovery method is loaded as a module this function + * registers its specific enumeration and discover routines for all available + * RapidIO mport devices. The "scan" command line parameter controls ability of + * the module to start RapidIO enumeration/discovery automatically. + * + * Returns 0 for success or -EIO if unable to register itself. + * + * This enumeration/discovery method cannot be unloaded and therefore does not + * provide a matching cleanup_module routine. + */ + +static int __init rio_basic_attach(void) +{ + if (rio_register_scan(RIO_MPORT_ANY, &rio_scan_ops)) + return -EIO; + if (scan) + rio_init_mports(); + return 0; +} + +late_initcall(rio_basic_attach); + +MODULE_DESCRIPTION("Basic RapidIO enumeration/discovery"); +MODULE_LICENSE("GPL"); diff --git a/drivers/rapidio/rio-sysfs.c b/drivers/rapidio/rio-sysfs.c index 4dbe360989be..66d4acd5e18f 100644 --- a/drivers/rapidio/rio-sysfs.c +++ b/drivers/rapidio/rio-sysfs.c @@ -285,3 +285,48 @@ void rio_remove_sysfs_dev_files(struct rio_dev *rdev) rdev->rswitch->sw_sysfs(rdev, RIO_SW_SYSFS_REMOVE); } } + +static ssize_t bus_scan_store(struct bus_type *bus, const char *buf, + size_t count) +{ + long val; + struct rio_mport *port = NULL; + int rc; + + if (kstrtol(buf, 0, &val) < 0) + return -EINVAL; + + if (val == RIO_MPORT_ANY) { + rc = rio_init_mports(); + goto exit; + } + + if (val < 0 || val >= RIO_MAX_MPORTS) + return -EINVAL; + + port = rio_find_mport((int)val); + + if (!port) { + pr_debug("RIO: %s: mport_%d not available\n", + __func__, (int)val); + return -EINVAL; + } + + if (!port->nscan) + return -EINVAL; + + if (port->host_deviceid >= 0) + rc = port->nscan->enumerate(port, 0); + else + rc = port->nscan->discover(port, RIO_SCAN_ENUM_NO_WAIT); +exit: + if (!rc) + rc = count; + + return rc; +} + +struct bus_attribute rio_bus_attrs[] = { + __ATTR(scan, (S_IWUSR|S_IWGRP), NULL, bus_scan_store), + __ATTR_NULL +}; diff --git a/drivers/rapidio/rio.c b/drivers/rapidio/rio.c index d553b5d13722..cb1c08996fbb 100644 --- a/drivers/rapidio/rio.c +++ b/drivers/rapidio/rio.c @@ -31,7 +31,11 @@ #include "rio.h" +static LIST_HEAD(rio_devices); +static DEFINE_SPINLOCK(rio_global_list_lock); + static LIST_HEAD(rio_mports); +static DEFINE_MUTEX(rio_mport_list_lock); static unsigned char next_portid; static DEFINE_SPINLOCK(rio_mmap_lock); @@ -53,6 +57,32 @@ u16 rio_local_get_device_id(struct rio_mport *port) } /** + * rio_add_device- Adds a RIO device to the device model + * @rdev: RIO device + * + * Adds the RIO device to the global device list and adds the RIO + * device to the RIO device list. Creates the generic sysfs nodes + * for an RIO device. + */ +int rio_add_device(struct rio_dev *rdev) +{ + int err; + + err = device_add(&rdev->dev); + if (err) + return err; + + spin_lock(&rio_global_list_lock); + list_add_tail(&rdev->global_list, &rio_devices); + spin_unlock(&rio_global_list_lock); + + rio_create_sysfs_dev_files(rdev); + + return 0; +} +EXPORT_SYMBOL_GPL(rio_add_device); + +/** * rio_request_inb_mbox - request inbound mailbox service * @mport: RIO master port from which to allocate the mailbox resource * @dev_id: Device specific pointer to pass on event @@ -489,6 +519,7 @@ rio_mport_get_physefb(struct rio_mport *port, int local, return ext_ftr_ptr; } +EXPORT_SYMBOL_GPL(rio_mport_get_physefb); /** * rio_get_comptag - Begin or continue searching for a RIO device by component tag @@ -521,6 +552,7 @@ exit: spin_unlock(&rio_global_list_lock); return rdev; } +EXPORT_SYMBOL_GPL(rio_get_comptag); /** * rio_set_port_lockout - Sets/clears LOCKOUT bit (RIO EM 1.3) for a switch port. @@ -545,6 +577,107 @@ int rio_set_port_lockout(struct rio_dev *rdev, u32 pnum, int lock) regval); return 0; } +EXPORT_SYMBOL_GPL(rio_set_port_lockout); + +/** + * rio_switch_init - Sets switch operations for a particular vendor switch + * @rdev: RIO device + * @do_enum: Enumeration/Discovery mode flag + * + * Searches the RIO switch ops table for known switch types. If the vid + * and did match a switch table entry, then call switch initialization + * routine to setup switch-specific routines. + */ +void rio_switch_init(struct rio_dev *rdev, int do_enum) +{ + struct rio_switch_ops *cur = __start_rio_switch_ops; + struct rio_switch_ops *end = __end_rio_switch_ops; + + while (cur < end) { + if ((cur->vid == rdev->vid) && (cur->did == rdev->did)) { + pr_debug("RIO: calling init routine for %s\n", + rio_name(rdev)); + cur->init_hook(rdev, do_enum); + break; + } + cur++; + } + + if ((cur >= end) && (rdev->pef & RIO_PEF_STD_RT)) { + pr_debug("RIO: adding STD routing ops for %s\n", + rio_name(rdev)); + rdev->rswitch->add_entry = rio_std_route_add_entry; + rdev->rswitch->get_entry = rio_std_route_get_entry; + rdev->rswitch->clr_table = rio_std_route_clr_table; + } + + if (!rdev->rswitch->add_entry || !rdev->rswitch->get_entry) + printk(KERN_ERR "RIO: missing routing ops for %s\n", + rio_name(rdev)); +} +EXPORT_SYMBOL_GPL(rio_switch_init); + +/** + * rio_enable_rx_tx_port - enable input receiver and output transmitter of + * given port + * @port: Master port associated with the RIO network + * @local: local=1 select local port otherwise a far device is reached + * @destid: Destination ID of the device to check host bit + * @hopcount: Number of hops to reach the target + * @port_num: Port (-number on switch) to enable on a far end device + * + * Returns 0 or 1 from on General Control Command and Status Register + * (EXT_PTR+0x3C) + */ +int rio_enable_rx_tx_port(struct rio_mport *port, + int local, u16 destid, + u8 hopcount, u8 port_num) +{ +#ifdef CONFIG_RAPIDIO_ENABLE_RX_TX_PORTS + u32 regval; + u32 ext_ftr_ptr; + + /* + * enable rx input tx output port + */ + pr_debug("rio_enable_rx_tx_port(local = %d, destid = %d, hopcount = " + "%d, port_num = %d)\n", local, destid, hopcount, port_num); + + ext_ftr_ptr = rio_mport_get_physefb(port, local, destid, hopcount); + + if (local) { + rio_local_read_config_32(port, ext_ftr_ptr + + RIO_PORT_N_CTL_CSR(0), + ®val); + } else { + if (rio_mport_read_config_32(port, destid, hopcount, + ext_ftr_ptr + RIO_PORT_N_CTL_CSR(port_num), ®val) < 0) + return -EIO; + } + + if (regval & RIO_PORT_N_CTL_P_TYP_SER) { + /* serial */ + regval = regval | RIO_PORT_N_CTL_EN_RX_SER + | RIO_PORT_N_CTL_EN_TX_SER; + } else { + /* parallel */ + regval = regval | RIO_PORT_N_CTL_EN_RX_PAR + | RIO_PORT_N_CTL_EN_TX_PAR; + } + + if (local) { + rio_local_write_config_32(port, ext_ftr_ptr + + RIO_PORT_N_CTL_CSR(0), regval); + } else { + if (rio_mport_write_config_32(port, destid, hopcount, + ext_ftr_ptr + RIO_PORT_N_CTL_CSR(port_num), regval) < 0) + return -EIO; + } +#endif + return 0; +} +EXPORT_SYMBOL_GPL(rio_enable_rx_tx_port); + /** * rio_chk_dev_route - Validate route to the specified device. @@ -610,6 +743,7 @@ rio_mport_chk_dev_access(struct rio_mport *mport, u16 destid, u8 hopcount) return 0; } +EXPORT_SYMBOL_GPL(rio_mport_chk_dev_access); /** * rio_chk_dev_access - Validate access to the specified device. @@ -941,6 +1075,7 @@ rio_mport_get_efb(struct rio_mport *port, int local, u16 destid, return RIO_GET_BLOCK_ID(reg_val); } } +EXPORT_SYMBOL_GPL(rio_mport_get_efb); /** * rio_mport_get_feature - query for devices' extended features @@ -997,6 +1132,7 @@ rio_mport_get_feature(struct rio_mport * port, int local, u16 destid, return 0; } +EXPORT_SYMBOL_GPL(rio_mport_get_feature); /** * rio_get_asm - Begin or continue searching for a RIO device by vid/did/asm_vid/asm_did @@ -1246,6 +1382,95 @@ EXPORT_SYMBOL_GPL(rio_dma_prep_slave_sg); #endif /* CONFIG_RAPIDIO_DMA_ENGINE */ +/** + * rio_find_mport - find RIO mport by its ID + * @mport_id: number (ID) of mport device + * + * Given a RIO mport number, the desired mport is located + * in the global list of mports. If the mport is found, a pointer to its + * data structure is returned. If no mport is found, %NULL is returned. + */ +struct rio_mport *rio_find_mport(int mport_id) +{ + struct rio_mport *port; + + mutex_lock(&rio_mport_list_lock); + list_for_each_entry(port, &rio_mports, node) { + if (port->id == mport_id) + goto found; + } + port = NULL; +found: + mutex_unlock(&rio_mport_list_lock); + + return port; +} + +/** + * rio_register_scan - enumeration/discovery method registration interface + * @mport_id: mport device ID for which fabric scan routine has to be set + * (RIO_MPORT_ANY = set for all available mports) + * @scan_ops: enumeration/discovery control structure + * + * Assigns enumeration or discovery method to the specified mport device (or all + * available mports if RIO_MPORT_ANY is specified). + * Returns error if the mport already has an enumerator attached to it. + * In case of RIO_MPORT_ANY ignores ports with valid scan routines and returns + * an error if was unable to find at least one available mport. + */ +int rio_register_scan(int mport_id, struct rio_scan *scan_ops) +{ + struct rio_mport *port; + int rc = -EBUSY; + + mutex_lock(&rio_mport_list_lock); + list_for_each_entry(port, &rio_mports, node) { + if (port->id == mport_id || mport_id == RIO_MPORT_ANY) { + if (port->nscan && mport_id == RIO_MPORT_ANY) + continue; + else if (port->nscan) + break; + + port->nscan = scan_ops; + rc = 0; + + if (mport_id != RIO_MPORT_ANY) + break; + } + } + mutex_unlock(&rio_mport_list_lock); + + return rc; +} +EXPORT_SYMBOL_GPL(rio_register_scan); + +/** + * rio_unregister_scan - removes enumeration/discovery method from mport + * @mport_id: mport device ID for which fabric scan routine has to be + * unregistered (RIO_MPORT_ANY = set for all available mports) + * + * Removes enumeration or discovery method assigned to the specified mport + * device (or all available mports if RIO_MPORT_ANY is specified). + */ +int rio_unregister_scan(int mport_id) +{ + struct rio_mport *port; + + mutex_lock(&rio_mport_list_lock); + list_for_each_entry(port, &rio_mports, node) { + if (port->id == mport_id || mport_id == RIO_MPORT_ANY) { + if (port->nscan) + port->nscan = NULL; + if (mport_id != RIO_MPORT_ANY) + break; + } + } + mutex_unlock(&rio_mport_list_lock); + + return 0; +} +EXPORT_SYMBOL_GPL(rio_unregister_scan); + static void rio_fixup_device(struct rio_dev *dev) { } @@ -1274,7 +1499,7 @@ static void disc_work_handler(struct work_struct *_work) work = container_of(_work, struct rio_disc_work, work); pr_debug("RIO: discovery work for mport %d %s\n", work->mport->id, work->mport->name); - rio_disc_mport(work->mport); + work->mport->nscan->discover(work->mport, 0); } int rio_init_mports(void) @@ -1290,12 +1515,15 @@ int rio_init_mports(void) * First, run enumerations and check if we need to perform discovery * on any of the registered mports. */ + mutex_lock(&rio_mport_list_lock); list_for_each_entry(port, &rio_mports, node) { - if (port->host_deviceid >= 0) - rio_enum_mport(port); - else + if (port->host_deviceid >= 0) { + if (port->nscan) + port->nscan->enumerate(port, 0); + } else n++; } + mutex_unlock(&rio_mport_list_lock); if (!n) goto no_disc; @@ -1322,14 +1550,16 @@ int rio_init_mports(void) } n = 0; + mutex_lock(&rio_mport_list_lock); list_for_each_entry(port, &rio_mports, node) { - if (port->host_deviceid < 0) { + if (port->host_deviceid < 0 && port->nscan) { work[n].mport = port; INIT_WORK(&work[n].work, disc_work_handler); queue_work(rio_wq, &work[n].work); n++; } } + mutex_unlock(&rio_mport_list_lock); flush_workqueue(rio_wq); pr_debug("RIO: destroy discovery workqueue\n"); @@ -1342,8 +1572,6 @@ no_disc: return 0; } -device_initcall_sync(rio_init_mports); - static int hdids[RIO_MAX_MPORTS + 1]; static int rio_get_hdid(int index) @@ -1371,7 +1599,10 @@ int rio_register_mport(struct rio_mport *port) port->id = next_portid++; port->host_deviceid = rio_get_hdid(port->id); + port->nscan = NULL; + mutex_lock(&rio_mport_list_lock); list_add_tail(&port->node, &rio_mports); + mutex_unlock(&rio_mport_list_lock); return 0; } @@ -1386,3 +1617,4 @@ EXPORT_SYMBOL_GPL(rio_request_inb_mbox); EXPORT_SYMBOL_GPL(rio_release_inb_mbox); EXPORT_SYMBOL_GPL(rio_request_outb_mbox); EXPORT_SYMBOL_GPL(rio_release_outb_mbox); +EXPORT_SYMBOL_GPL(rio_init_mports); diff --git a/drivers/rapidio/rio.h b/drivers/rapidio/rio.h index b1af414f15e6..c14f864dea5c 100644 --- a/drivers/rapidio/rio.h +++ b/drivers/rapidio/rio.h @@ -15,6 +15,7 @@ #include <linux/rio.h> #define RIO_MAX_CHK_RETRY 3 +#define RIO_MPORT_ANY (-1) /* Functions internal to the RIO core code */ @@ -27,8 +28,6 @@ extern u32 rio_mport_get_efb(struct rio_mport *port, int local, u16 destid, extern int rio_mport_chk_dev_access(struct rio_mport *mport, u16 destid, u8 hopcount); extern int rio_create_sysfs_dev_files(struct rio_dev *rdev); -extern int rio_enum_mport(struct rio_mport *mport); -extern int rio_disc_mport(struct rio_mport *mport); extern int rio_std_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount, u16 table, u16 route_destid, u8 route_port); @@ -39,10 +38,18 @@ extern int rio_std_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount, u16 table); extern int rio_set_port_lockout(struct rio_dev *rdev, u32 pnum, int lock); extern struct rio_dev *rio_get_comptag(u32 comp_tag, struct rio_dev *from); +extern int rio_add_device(struct rio_dev *rdev); +extern void rio_switch_init(struct rio_dev *rdev, int do_enum); +extern int rio_enable_rx_tx_port(struct rio_mport *port, int local, u16 destid, + u8 hopcount, u8 port_num); +extern int rio_register_scan(int mport_id, struct rio_scan *scan_ops); +extern int rio_unregister_scan(int mport_id); +extern void rio_attach_device(struct rio_dev *rdev); +extern struct rio_mport *rio_find_mport(int mport_id); /* Structures internal to the RIO core code */ extern struct device_attribute rio_dev_attrs[]; -extern spinlock_t rio_global_list_lock; +extern struct bus_attribute rio_bus_attrs[]; extern struct rio_switch_ops __start_rio_switch_ops[]; extern struct rio_switch_ops __end_rio_switch_ops[]; diff --git a/drivers/rtc/rtc-max8998.c b/drivers/rtc/rtc-max8998.c index 48b6612fae7f..d5af7baa48b5 100644 --- a/drivers/rtc/rtc-max8998.c +++ b/drivers/rtc/rtc-max8998.c @@ -285,7 +285,7 @@ static int max8998_rtc_probe(struct platform_device *pdev) info->irq, ret); dev_info(&pdev->dev, "RTC CHIP NAME: %s\n", pdev->id_entry->name); - if (pdata->rtc_delay) { + if (pdata && pdata->rtc_delay) { info->lp3974_bug_workaround = true; dev_warn(&pdev->dev, "LP3974 with RTC REGERR option." " RTC updates will be extremely slow.\n"); diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c index 8900ea784817..0f0609b1aa2c 100644 --- a/drivers/rtc/rtc-pl031.c +++ b/drivers/rtc/rtc-pl031.c @@ -306,7 +306,7 @@ static int pl031_remove(struct amba_device *adev) struct pl031_local *ldata = dev_get_drvdata(&adev->dev); amba_set_drvdata(adev, NULL); - free_irq(adev->irq[0], ldata->rtc); + free_irq(adev->irq[0], ldata); rtc_device_unregister(ldata->rtc); iounmap(ldata->base); kfree(ldata); diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c index 30d4f7a783cd..f0b9f6b52b32 100644 --- a/drivers/tty/serial/omap-serial.c +++ b/drivers/tty/serial/omap-serial.c @@ -202,26 +202,6 @@ static int serial_omap_get_context_loss_count(struct uart_omap_port *up) return pdata->get_context_loss_count(up->dev); } -static void serial_omap_set_forceidle(struct uart_omap_port *up) -{ - struct omap_uart_port_info *pdata = up->dev->platform_data; - - if (!pdata || !pdata->set_forceidle) - return; - - pdata->set_forceidle(up->dev); -} - -static void serial_omap_set_noidle(struct uart_omap_port *up) -{ - struct omap_uart_port_info *pdata = up->dev->platform_data; - - if (!pdata || !pdata->set_noidle) - return; - - pdata->set_noidle(up->dev); -} - static void serial_omap_enable_wakeup(struct uart_omap_port *up, bool enable) { struct omap_uart_port_info *pdata = up->dev->platform_data; @@ -298,8 +278,6 @@ static void serial_omap_stop_tx(struct uart_port *port) serial_out(up, UART_IER, up->ier); } - serial_omap_set_forceidle(up); - pm_runtime_mark_last_busy(up->dev); pm_runtime_put_autosuspend(up->dev); } @@ -364,7 +342,6 @@ static void serial_omap_start_tx(struct uart_port *port) pm_runtime_get_sync(up->dev); serial_omap_enable_ier_thri(up); - serial_omap_set_noidle(up); pm_runtime_mark_last_busy(up->dev); pm_runtime_put_autosuspend(up->dev); } diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index d71d60f94fc1..2e937bdace6f 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -2199,7 +2199,7 @@ config FB_XILINX config FB_GOLDFISH tristate "Goldfish Framebuffer" - depends on FB + depends on FB && HAS_DMA select FB_CFB_FILLRECT select FB_CFB_COPYAREA select FB_CFB_IMAGEBLIT @@ -2453,6 +2453,23 @@ config FB_HYPERV help This framebuffer driver supports Microsoft Hyper-V Synthetic Video. +config FB_SIMPLE + bool "Simple framebuffer support" + depends on (FB = y) && OF + select FB_CFB_FILLRECT + select FB_CFB_COPYAREA + select FB_CFB_IMAGEBLIT + help + Say Y if you want support for a simple frame-buffer. + + This driver assumes that the display hardware has been initialized + before the kernel boots, and the kernel will simply render to the + pre-allocated frame buffer surface. + + Configuration re: surface address, size, and format must be provided + through device tree, or potentially plain old platform data in the + future. + source "drivers/video/omap/Kconfig" source "drivers/video/omap2/Kconfig" source "drivers/video/exynos/Kconfig" diff --git a/drivers/video/Makefile b/drivers/video/Makefile index 7234e4a959e8..e8bae8dd4804 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -166,6 +166,7 @@ obj-$(CONFIG_FB_MX3) += mx3fb.o obj-$(CONFIG_FB_DA8XX) += da8xx-fb.o obj-$(CONFIG_FB_MXS) += mxsfb.o obj-$(CONFIG_FB_SSD1307) += ssd1307fb.o +obj-$(CONFIG_FB_SIMPLE) += simplefb.o # the test framebuffer is last obj-$(CONFIG_FB_VIRTUAL) += vfb.o diff --git a/drivers/video/simplefb.c b/drivers/video/simplefb.c new file mode 100644 index 000000000000..e2e9e3e61b72 --- /dev/null +++ b/drivers/video/simplefb.c @@ -0,0 +1,234 @@ +/* + * Simplest possible simple frame-buffer driver, as a platform device + * + * Copyright (c) 2013, Stephen Warren + * + * Based on q40fb.c, which was: + * Copyright (C) 2001 Richard Zidlicky <rz@linux-m68k.org> + * + * Also based on offb.c, which was: + * Copyright (C) 1997 Geert Uytterhoeven + * Copyright (C) 1996 Paul Mackerras + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + */ + +#include <linux/errno.h> +#include <linux/fb.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/platform_device.h> + +static struct fb_fix_screeninfo simplefb_fix = { + .id = "simple", + .type = FB_TYPE_PACKED_PIXELS, + .visual = FB_VISUAL_TRUECOLOR, + .accel = FB_ACCEL_NONE, +}; + +static struct fb_var_screeninfo simplefb_var = { + .height = -1, + .width = -1, + .activate = FB_ACTIVATE_NOW, + .vmode = FB_VMODE_NONINTERLACED, +}; + +static int simplefb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, + u_int transp, struct fb_info *info) +{ + u32 *pal = info->pseudo_palette; + u32 cr = red >> (16 - info->var.red.length); + u32 cg = green >> (16 - info->var.green.length); + u32 cb = blue >> (16 - info->var.blue.length); + u32 value; + + if (regno >= 16) + return -EINVAL; + + value = (cr << info->var.red.offset) | + (cg << info->var.green.offset) | + (cb << info->var.blue.offset); + if (info->var.transp.length > 0) { + u32 mask = (1 << info->var.transp.length) - 1; + mask <<= info->var.transp.offset; + value |= mask; + } + pal[regno] = value; + + return 0; +} + +static struct fb_ops simplefb_ops = { + .owner = THIS_MODULE, + .fb_setcolreg = simplefb_setcolreg, + .fb_fillrect = cfb_fillrect, + .fb_copyarea = cfb_copyarea, + .fb_imageblit = cfb_imageblit, +}; + +struct simplefb_format { + const char *name; + u32 bits_per_pixel; + struct fb_bitfield red; + struct fb_bitfield green; + struct fb_bitfield blue; + struct fb_bitfield transp; +}; + +static struct simplefb_format simplefb_formats[] = { + { "r5g6b5", 16, {11, 5}, {5, 6}, {0, 5}, {0, 0} }, +}; + +struct simplefb_params { + u32 width; + u32 height; + u32 stride; + struct simplefb_format *format; +}; + +static int simplefb_parse_dt(struct platform_device *pdev, + struct simplefb_params *params) +{ + struct device_node *np = pdev->dev.of_node; + int ret; + const char *format; + int i; + + ret = of_property_read_u32(np, "width", ¶ms->width); + if (ret) { + dev_err(&pdev->dev, "Can't parse width property\n"); + return ret; + } + + ret = of_property_read_u32(np, "height", ¶ms->height); + if (ret) { + dev_err(&pdev->dev, "Can't parse height property\n"); + return ret; + } + + ret = of_property_read_u32(np, "stride", ¶ms->stride); + if (ret) { + dev_err(&pdev->dev, "Can't parse stride property\n"); + return ret; + } + + ret = of_property_read_string(np, "format", &format); + if (ret) { + dev_err(&pdev->dev, "Can't parse format property\n"); + return ret; + } + params->format = NULL; + for (i = 0; i < ARRAY_SIZE(simplefb_formats); i++) { + if (strcmp(format, simplefb_formats[i].name)) + continue; + params->format = &simplefb_formats[i]; + break; + } + if (!params->format) { + dev_err(&pdev->dev, "Invalid format value\n"); + return -EINVAL; + } + + return 0; +} + +static int simplefb_probe(struct platform_device *pdev) +{ + int ret; + struct simplefb_params params; + struct fb_info *info; + struct resource *mem; + + if (fb_get_options("simplefb", NULL)) + return -ENODEV; + + ret = simplefb_parse_dt(pdev, ¶ms); + if (ret) + return ret; + + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!mem) { + dev_err(&pdev->dev, "No memory resource\n"); + return -EINVAL; + } + + info = framebuffer_alloc(sizeof(u32) * 16, &pdev->dev); + if (!info) + return -ENOMEM; + platform_set_drvdata(pdev, info); + + info->fix = simplefb_fix; + info->fix.smem_start = mem->start; + info->fix.smem_len = resource_size(mem); + info->fix.line_length = params.stride; + + info->var = simplefb_var; + info->var.xres = params.width; + info->var.yres = params.height; + info->var.xres_virtual = params.width; + info->var.yres_virtual = params.height; + info->var.bits_per_pixel = params.format->bits_per_pixel; + info->var.red = params.format->red; + info->var.green = params.format->green; + info->var.blue = params.format->blue; + info->var.transp = params.format->transp; + + info->fbops = &simplefb_ops; + info->flags = FBINFO_DEFAULT; + info->screen_base = devm_ioremap(&pdev->dev, info->fix.smem_start, + info->fix.smem_len); + if (!info->screen_base) { + framebuffer_release(info); + return -ENODEV; + } + info->pseudo_palette = (void *)(info + 1); + + ret = register_framebuffer(info); + if (ret < 0) { + dev_err(&pdev->dev, "Unable to register simplefb: %d\n", ret); + framebuffer_release(info); + return ret; + } + + dev_info(&pdev->dev, "fb%d: simplefb registered!\n", info->node); + + return 0; +} + +static int simplefb_remove(struct platform_device *pdev) +{ + struct fb_info *info = platform_get_drvdata(pdev); + + unregister_framebuffer(info); + framebuffer_release(info); + + return 0; +} + +static const struct of_device_id simplefb_of_match[] = { + { .compatible = "simple-framebuffer", }, + { }, +}; +MODULE_DEVICE_TABLE(of, simplefb_of_match); + +static struct platform_driver simplefb_driver = { + .driver = { + .name = "simple-framebuffer", + .owner = THIS_MODULE, + .of_match_table = simplefb_of_match, + }, + .probe = simplefb_probe, + .remove = simplefb_remove, +}; +module_platform_driver(simplefb_driver); + +MODULE_AUTHOR("Stephen Warren <swarren@wwwdotorg.org>"); +MODULE_DESCRIPTION("Simple framebuffer driver"); +MODULE_LICENSE("GPL v2"); @@ -307,7 +307,9 @@ static void free_ioctx(struct kioctx *ctx) kunmap_atomic(ring); while (atomic_read(&ctx->reqs_active) > 0) { - wait_event(ctx->wait, head != ctx->tail); + wait_event(ctx->wait, + head != ctx->tail || + atomic_read(&ctx->reqs_active) <= 0); avail = (head <= ctx->tail ? ctx->tail : ctx->nr_events) - head; @@ -1299,8 +1301,7 @@ SYSCALL_DEFINE3(io_cancel, aio_context_t, ctx_id, struct iocb __user *, iocb, * < min_nr if the timeout specified by timeout has elapsed * before sufficient events are available, where timeout == NULL * specifies an infinite timeout. Note that the timeout pointed to by - * timeout is relative and will be updated if not NULL and the - * operation blocks. Will fail with -ENOSYS if not implemented. + * timeout is relative. Will fail with -ENOSYS if not implemented. */ SYSCALL_DEFINE5(io_getevents, aio_context_t, ctx_id, long, min_nr, diff --git a/fs/fat/inode.c b/fs/fat/inode.c index dfce656ddb33..5d4513cb1b3c 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -1229,6 +1229,19 @@ static int fat_read_root(struct inode *inode) return 0; } +static unsigned long calc_fat_clusters(struct super_block *sb) +{ + struct msdos_sb_info *sbi = MSDOS_SB(sb); + + /* Divide first to avoid overflow */ + if (sbi->fat_bits != 12) { + unsigned long ent_per_sec = sb->s_blocksize * 8 / sbi->fat_bits; + return ent_per_sec * sbi->fat_length; + } + + return sbi->fat_length * sb->s_blocksize * 8 / sbi->fat_bits; +} + /* * Read the super block of an MS-DOS FS. */ @@ -1434,7 +1447,7 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, sbi->dirty = b->fat16.state & FAT_STATE_DIRTY; /* check that FAT table does not overflow */ - fat_clusters = sbi->fat_length * sb->s_blocksize * 8 / sbi->fat_bits; + fat_clusters = calc_fat_clusters(sb); total_clusters = min(total_clusters, fat_clusters - FAT_START_ENT); if (total_clusters > MAX_FAT(sb)) { if (!silent) diff --git a/fs/hfs/bnode.c b/fs/hfs/bnode.c index f3b1a15ccd59..d3fa6bd9503e 100644 --- a/fs/hfs/bnode.c +++ b/fs/hfs/bnode.c @@ -415,7 +415,11 @@ struct hfs_bnode *hfs_bnode_create(struct hfs_btree *tree, u32 num) spin_lock(&tree->hash_lock); node = hfs_bnode_findhash(tree, num); spin_unlock(&tree->hash_lock); - BUG_ON(node); + if (node) { + pr_crit("new node %u already hashed?\n", num); + WARN_ON(1); + return node; + } node = __hfs_bnode_create(tree, num); if (!node) return ERR_PTR(-ENOMEM); diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c index 689fb608648e..bccfec8343c5 100644 --- a/fs/nilfs2/inode.c +++ b/fs/nilfs2/inode.c @@ -219,13 +219,32 @@ static int nilfs_writepage(struct page *page, struct writeback_control *wbc) static int nilfs_set_page_dirty(struct page *page) { - int ret = __set_page_dirty_buffers(page); + int ret = __set_page_dirty_nobuffers(page); - if (ret) { + if (page_has_buffers(page)) { struct inode *inode = page->mapping->host; - unsigned nr_dirty = 1 << (PAGE_SHIFT - inode->i_blkbits); + unsigned nr_dirty = 0; + struct buffer_head *bh, *head; - nilfs_set_file_dirty(inode, nr_dirty); + /* + * This page is locked by callers, and no other thread + * concurrently marks its buffers dirty since they are + * only dirtied through routines in fs/buffer.c in + * which call sites of mark_buffer_dirty are protected + * by page lock. + */ + bh = head = page_buffers(page); + do { + /* Do not mark hole blocks dirty */ + if (buffer_dirty(bh) || !buffer_mapped(bh)) + continue; + + set_buffer_dirty(bh); + nr_dirty++; + } while (bh = bh->b_this_page, bh != head); + + if (nr_dirty) + nilfs_set_file_dirty(inode, nr_dirty); } return ret; } diff --git a/fs/ocfs2/extent_map.c b/fs/ocfs2/extent_map.c index 1c39efb71bab..2487116d0d33 100644 --- a/fs/ocfs2/extent_map.c +++ b/fs/ocfs2/extent_map.c @@ -790,7 +790,7 @@ int ocfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, &hole_size, &rec, &is_last); if (ret) { mlog_errno(ret); - goto out; + goto out_unlock; } if (rec.e_blkno == 0ULL) { diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index 8a7509f9e6f5..ff54014a24ec 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -2288,7 +2288,7 @@ relock: ret = ocfs2_inode_lock(inode, NULL, 1); if (ret < 0) { mlog_errno(ret); - goto out_sems; + goto out; } ocfs2_inode_unlock(inode, 1); diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 2b2691b73428..41a695048be7 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -725,6 +725,25 @@ xfs_convert_page( (xfs_off_t)(page->index + 1) << PAGE_CACHE_SHIFT, i_size_read(inode)); + /* + * If the current map does not span the entire page we are about to try + * to write, then give up. The only way we can write a page that spans + * multiple mappings in a single writeback iteration is via the + * xfs_vm_writepage() function. Data integrity writeback requires the + * entire page to be written in a single attempt, otherwise the part of + * the page we don't write here doesn't get written as part of the data + * integrity sync. + * + * For normal writeback, we also don't attempt to write partial pages + * here as it simply means that write_cache_pages() will see it under + * writeback and ignore the page until some point in the future, at + * which time this will be the only page in the file that needs + * writeback. Hence for more optimal IO patterns, we should always + * avoid partial page writeback due to multiple mappings on a page here. + */ + if (!xfs_imap_valid(inode, imap, end_offset)) + goto fail_unlock_page; + len = 1 << inode->i_blkbits; p_offset = min_t(unsigned long, end_offset & (PAGE_CACHE_SIZE - 1), PAGE_CACHE_SIZE); diff --git a/fs/xfs/xfs_attr_leaf.c b/fs/xfs/xfs_attr_leaf.c index 08d5457c948e..0bce1b348580 100644 --- a/fs/xfs/xfs_attr_leaf.c +++ b/fs/xfs/xfs_attr_leaf.c @@ -931,20 +931,22 @@ xfs_attr_shortform_list(xfs_attr_list_context_t *context) */ int xfs_attr_shortform_allfit( - struct xfs_buf *bp, - struct xfs_inode *dp) + struct xfs_buf *bp, + struct xfs_inode *dp) { - xfs_attr_leafblock_t *leaf; - xfs_attr_leaf_entry_t *entry; + struct xfs_attr_leafblock *leaf; + struct xfs_attr_leaf_entry *entry; xfs_attr_leaf_name_local_t *name_loc; - int bytes, i; + struct xfs_attr3_icleaf_hdr leafhdr; + int bytes; + int i; leaf = bp->b_addr; - ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_ATTR_LEAF_MAGIC)); + xfs_attr3_leaf_hdr_from_disk(&leafhdr, leaf); + entry = xfs_attr3_leaf_entryp(leaf); - entry = &leaf->entries[0]; bytes = sizeof(struct xfs_attr_sf_hdr); - for (i = 0; i < be16_to_cpu(leaf->hdr.count); entry++, i++) { + for (i = 0; i < leafhdr.count; entry++, i++) { if (entry->flags & XFS_ATTR_INCOMPLETE) continue; /* don't copy partial entries */ if (!(entry->flags & XFS_ATTR_LOCAL)) @@ -954,15 +956,15 @@ xfs_attr_shortform_allfit( return(0); if (be16_to_cpu(name_loc->valuelen) >= XFS_ATTR_SF_ENTSIZE_MAX) return(0); - bytes += sizeof(struct xfs_attr_sf_entry)-1 + bytes += sizeof(struct xfs_attr_sf_entry) - 1 + name_loc->namelen + be16_to_cpu(name_loc->valuelen); } if ((dp->i_mount->m_flags & XFS_MOUNT_ATTR2) && (dp->i_d.di_format != XFS_DINODE_FMT_BTREE) && (bytes == sizeof(struct xfs_attr_sf_hdr))) - return(-1); - return(xfs_attr_shortform_bytesfit(dp, bytes)); + return -1; + return xfs_attr_shortform_bytesfit(dp, bytes); } /* @@ -2330,9 +2332,10 @@ xfs_attr3_leaf_lookup_int( if (!xfs_attr_namesp_match(args->flags, entry->flags)) continue; args->index = probe; + args->valuelen = be32_to_cpu(name_rmt->valuelen); args->rmtblkno = be32_to_cpu(name_rmt->valueblk); args->rmtblkcnt = XFS_B_TO_FSB(args->dp->i_mount, - be32_to_cpu(name_rmt->valuelen)); + args->valuelen); return XFS_ERROR(EEXIST); } } diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index 82b70bda9f47..0d2554299688 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -1649,7 +1649,7 @@ xfs_alloc_buftarg( { xfs_buftarg_t *btp; - btp = kmem_zalloc(sizeof(*btp), KM_SLEEP); + btp = kmem_zalloc(sizeof(*btp), KM_SLEEP | KM_NOFS); btp->bt_mount = mp; btp->bt_dev = bdev->bd_dev; diff --git a/fs/xfs/xfs_da_btree.c b/fs/xfs/xfs_da_btree.c index 9b26a99ebfe9..0b8b2a13cd24 100644 --- a/fs/xfs/xfs_da_btree.c +++ b/fs/xfs/xfs_da_btree.c @@ -270,6 +270,7 @@ xfs_da3_node_read_verify( break; return; case XFS_ATTR_LEAF_MAGIC: + case XFS_ATTR3_LEAF_MAGIC: bp->b_ops = &xfs_attr3_leaf_buf_ops; bp->b_ops->verify_read(bp); return; @@ -2464,7 +2465,8 @@ xfs_buf_map_from_irec( ASSERT(nirecs >= 1); if (nirecs > 1) { - map = kmem_zalloc(nirecs * sizeof(struct xfs_buf_map), KM_SLEEP); + map = kmem_zalloc(nirecs * sizeof(struct xfs_buf_map), + KM_SLEEP | KM_NOFS); if (!map) return ENOMEM; *mapp = map; @@ -2520,7 +2522,8 @@ xfs_dabuf_map( * Optimize the one-block case. */ if (nfsb != 1) - irecs = kmem_zalloc(sizeof(irec) * nfsb, KM_SLEEP); + irecs = kmem_zalloc(sizeof(irec) * nfsb, + KM_SLEEP | KM_NOFS); nirecs = nfsb; error = xfs_bmapi_read(dp, (xfs_fileoff_t)bno, nfsb, irecs, diff --git a/fs/xfs/xfs_dir2_leaf.c b/fs/xfs/xfs_dir2_leaf.c index 721ba2fe8e54..da71a1819d78 100644 --- a/fs/xfs/xfs_dir2_leaf.c +++ b/fs/xfs/xfs_dir2_leaf.c @@ -1336,7 +1336,7 @@ xfs_dir2_leaf_getdents( mp->m_sb.sb_blocksize); map_info = kmem_zalloc(offsetof(struct xfs_dir2_leaf_map_info, map) + (length * sizeof(struct xfs_bmbt_irec)), - KM_SLEEP); + KM_SLEEP | KM_NOFS); map_info->map_size = length; /* diff --git a/fs/xfs/xfs_extfree_item.c b/fs/xfs/xfs_extfree_item.c index c0f375087efc..452920a3f03f 100644 --- a/fs/xfs/xfs_extfree_item.c +++ b/fs/xfs/xfs_extfree_item.c @@ -305,11 +305,12 @@ xfs_efi_release(xfs_efi_log_item_t *efip, { ASSERT(atomic_read(&efip->efi_next_extent) >= nextents); if (atomic_sub_and_test(nextents, &efip->efi_next_extent)) { - __xfs_efi_release(efip); - /* recovery needs us to drop the EFI reference, too */ if (test_bit(XFS_EFI_RECOVERED, &efip->efi_flags)) __xfs_efi_release(efip); + + __xfs_efi_release(efip); + /* efip may now have been freed, do not reference it again. */ } } diff --git a/fs/xfs/xfs_log_cil.c b/fs/xfs/xfs_log_cil.c index e3d0b85d852b..d0833b54e55d 100644 --- a/fs/xfs/xfs_log_cil.c +++ b/fs/xfs/xfs_log_cil.c @@ -139,7 +139,7 @@ xlog_cil_prepare_log_vecs( new_lv = kmem_zalloc(sizeof(*new_lv) + niovecs * sizeof(struct xfs_log_iovec), - KM_SLEEP); + KM_SLEEP|KM_NOFS); /* The allocated iovec region lies beyond the log vector. */ new_lv->lv_iovecp = (struct xfs_log_iovec *)&new_lv[1]; diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index 1501f4fa51a6..0176bb21f09a 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -1453,7 +1453,7 @@ xfs_free_file_space( xfs_mount_t *mp; int nimap; uint resblks; - uint rounding; + xfs_off_t rounding; int rt; xfs_fileoff_t startoffset_fsb; xfs_trans_t *tp; @@ -1482,7 +1482,7 @@ xfs_free_file_space( inode_dio_wait(VFS_I(ip)); } - rounding = max_t(uint, 1 << mp->m_sb.sb_blocklog, PAGE_CACHE_SIZE); + rounding = max_t(xfs_off_t, 1 << mp->m_sb.sb_blocklog, PAGE_CACHE_SIZE); ioffset = offset & ~(rounding - 1); error = -filemap_write_and_wait_range(VFS_I(ip)->i_mapping, ioffset, -1); diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 98db31d9f9b4..636c59f2003a 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -377,7 +377,6 @@ acpi_status acpi_bus_get_status_handle(acpi_handle handle, unsigned long long *sta); int acpi_bus_get_status(struct acpi_device *device); -#ifdef CONFIG_PM int acpi_bus_set_power(acpi_handle handle, int state); const char *acpi_power_state_string(int state); int acpi_device_get_power(struct acpi_device *device, int *state); @@ -385,41 +384,12 @@ int acpi_device_set_power(struct acpi_device *device, int state); int acpi_bus_init_power(struct acpi_device *device); int acpi_bus_update_power(acpi_handle handle, int *state_p); bool acpi_bus_power_manageable(acpi_handle handle); + +#ifdef CONFIG_PM bool acpi_bus_can_wakeup(acpi_handle handle); -#else /* !CONFIG_PM */ -static inline int acpi_bus_set_power(acpi_handle handle, int state) -{ - return 0; -} -static inline const char *acpi_power_state_string(int state) -{ - return "D0"; -} -static inline int acpi_device_get_power(struct acpi_device *device, int *state) -{ - return 0; -} -static inline int acpi_device_set_power(struct acpi_device *device, int state) -{ - return 0; -} -static inline int acpi_bus_init_power(struct acpi_device *device) -{ - return 0; -} -static inline int acpi_bus_update_power(acpi_handle handle, int *state_p) -{ - return 0; -} -static inline bool acpi_bus_power_manageable(acpi_handle handle) -{ - return false; -} -static inline bool acpi_bus_can_wakeup(acpi_handle handle) -{ - return false; -} -#endif /* !CONFIG_PM */ +#else +static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; } +#endif #ifdef CONFIG_ACPI_PROC_EVENT int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data); diff --git a/include/linux/acpi_dma.h b/include/linux/acpi_dma.h index d09deabc7bf6..fb0298082916 100644 --- a/include/linux/acpi_dma.h +++ b/include/linux/acpi_dma.h @@ -37,6 +37,8 @@ struct acpi_dma_spec { * @dev: struct device of this controller * @acpi_dma_xlate: callback function to find a suitable channel * @data: private data used by a callback function + * @base_request_line: first supported request line (CSRT) + * @end_request_line: last supported request line (CSRT) */ struct acpi_dma { struct list_head dma_controllers; @@ -44,6 +46,8 @@ struct acpi_dma { struct dma_chan *(*acpi_dma_xlate) (struct acpi_dma_spec *, struct acpi_dma *); void *data; + unsigned short base_request_line; + unsigned short end_request_line; }; /* Used with acpi_dma_simple_xlate() */ diff --git a/include/linux/kernel.h b/include/linux/kernel.h index e96329ceb28c..e9ef6d6b51d5 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -562,6 +562,9 @@ int __trace_bprintk(unsigned long ip, const char *fmt, ...); extern __printf(2, 3) int __trace_printk(unsigned long ip, const char *fmt, ...); +extern int __trace_bputs(unsigned long ip, const char *str); +extern int __trace_puts(unsigned long ip, const char *str, int size); + /** * trace_puts - write a string into the ftrace buffer * @str: the string to record @@ -587,8 +590,6 @@ int __trace_printk(unsigned long ip, const char *fmt, ...); * (1 when __trace_bputs is used, strlen(str) when __trace_puts is used) */ -extern int __trace_bputs(unsigned long ip, const char *str); -extern int __trace_puts(unsigned long ip, const char *str, int size); #define trace_puts(str) ({ \ static const char *trace_printk_fmt \ __attribute__((section("__trace_printk_fmt"))) = \ diff --git a/include/linux/platform_data/clk-lpss.h b/include/linux/platform_data/clk-lpss.h index 528e73ce46d2..23901992b9dd 100644 --- a/include/linux/platform_data/clk-lpss.h +++ b/include/linux/platform_data/clk-lpss.h @@ -13,6 +13,11 @@ #ifndef __CLK_LPSS_H #define __CLK_LPSS_H +struct lpss_clk_data { + const char *name; + struct clk *clk; +}; + extern int lpt_clk_init(void); #endif /* __CLK_LPSS_H */ diff --git a/include/linux/platform_data/serial-omap.h b/include/linux/platform_data/serial-omap.h index ff9b0aab5281..c860c1b314c0 100644 --- a/include/linux/platform_data/serial-omap.h +++ b/include/linux/platform_data/serial-omap.h @@ -43,8 +43,6 @@ struct omap_uart_port_info { int DTR_present; int (*get_context_loss_count)(struct device *); - void (*set_forceidle)(struct device *); - void (*set_noidle)(struct device *); void (*enable_wakeup)(struct device *, bool); }; diff --git a/include/linux/rio.h b/include/linux/rio.h index a3e784278667..18e099342e6f 100644 --- a/include/linux/rio.h +++ b/include/linux/rio.h @@ -83,7 +83,6 @@ extern struct bus_type rio_bus_type; extern struct device rio_bus; -extern struct list_head rio_devices; /* list of all devices */ struct rio_mport; struct rio_dev; @@ -237,6 +236,7 @@ enum rio_phy_type { * @name: Port name string * @priv: Master port private data * @dma: DMA device associated with mport + * @nscan: RapidIO network enumeration/discovery operations */ struct rio_mport { struct list_head dbells; /* list of doorbell events */ @@ -262,8 +262,14 @@ struct rio_mport { #ifdef CONFIG_RAPIDIO_DMA_ENGINE struct dma_device dma; #endif + struct rio_scan *nscan; }; +/* + * Enumeration/discovery control flags + */ +#define RIO_SCAN_ENUM_NO_WAIT 0x00000001 /* Do not wait for enum completed */ + struct rio_id_table { u16 start; /* logical minimal id */ u32 max; /* max number of IDs in table */ @@ -460,6 +466,16 @@ static inline struct rio_mport *dma_to_mport(struct dma_device *ddev) } #endif /* CONFIG_RAPIDIO_DMA_ENGINE */ +/** + * struct rio_scan - RIO enumeration and discovery operations + * @enumerate: Callback to perform RapidIO fabric enumeration. + * @discover: Callback to perform RapidIO fabric discovery. + */ +struct rio_scan { + int (*enumerate)(struct rio_mport *mport, u32 flags); + int (*discover)(struct rio_mport *mport, u32 flags); +}; + /* Architecture and hardware-specific functions */ extern int rio_register_mport(struct rio_mport *); extern int rio_open_inb_mbox(struct rio_mport *, void *, int, int); diff --git a/include/linux/rio_drv.h b/include/linux/rio_drv.h index b75c05920ab5..5059994fe297 100644 --- a/include/linux/rio_drv.h +++ b/include/linux/rio_drv.h @@ -433,5 +433,6 @@ extern u16 rio_local_get_device_id(struct rio_mport *port); extern struct rio_dev *rio_get_device(u16 vid, u16 did, struct rio_dev *from); extern struct rio_dev *rio_get_asm(u16 vid, u16 did, u16 asm_vid, u16 asm_did, struct rio_dev *from); +extern int rio_init_mports(void); #endif /* LINUX_RIO_DRV_H */ diff --git a/include/linux/wait.h b/include/linux/wait.h index ac38be2692d8..1133695eb067 100644 --- a/include/linux/wait.h +++ b/include/linux/wait.h @@ -217,6 +217,8 @@ do { \ if (!ret) \ break; \ } \ + if (!ret && (condition)) \ + ret = 1; \ finish_wait(&wq, &__wait); \ } while (0) @@ -233,8 +235,9 @@ do { \ * wake_up() has to be called after changing any variable that could * change the result of the wait condition. * - * The function returns 0 if the @timeout elapsed, and the remaining - * jiffies if the condition evaluated to true before the timeout elapsed. + * The function returns 0 if the @timeout elapsed, or the remaining + * jiffies (at least 1) if the @condition evaluated to %true before + * the @timeout elapsed. */ #define wait_event_timeout(wq, condition, timeout) \ ({ \ @@ -302,6 +305,8 @@ do { \ ret = -ERESTARTSYS; \ break; \ } \ + if (!ret && (condition)) \ + ret = 1; \ finish_wait(&wq, &__wait); \ } while (0) @@ -318,9 +323,10 @@ do { \ * wake_up() has to be called after changing any variable that could * change the result of the wait condition. * - * The function returns 0 if the @timeout elapsed, -ERESTARTSYS if it - * was interrupted by a signal, and the remaining jiffies otherwise - * if the condition evaluated to true before the timeout elapsed. + * Returns: + * 0 if the @timeout elapsed, -%ERESTARTSYS if it was interrupted by + * a signal, or the remaining jiffies (at least 1) if the @condition + * evaluated to %true before the @timeout elapsed. */ #define wait_event_interruptible_timeout(wq, condition, timeout) \ ({ \ diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c index 83a2970295d1..6bd4a90d1991 100644 --- a/kernel/auditfilter.c +++ b/kernel/auditfilter.c @@ -1021,9 +1021,6 @@ static void audit_log_rule_change(char *action, struct audit_krule *rule, int re * @seq: netlink audit message sequence (serial) number * @data: payload data * @datasz: size of payload data - * @loginuid: loginuid of sender - * @sessionid: sessionid for netlink audit message - * @sid: SE Linux Security ID of sender */ int audit_receive_filter(int type, int pid, int seq, void *data, size_t datasz) { diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 03a89a2f464b..362c329b83fe 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2325,7 +2325,12 @@ static void collapse_huge_page(struct mm_struct *mm, pte_unmap(pte); spin_lock(&mm->page_table_lock); BUG_ON(!pmd_none(*pmd)); - set_pmd_at(mm, address, pmd, _pmd); + /* + * We can only use set_pmd_at when establishing + * hugepmds and never for establishing regular pmds that + * points to regular pagetables. Use pmd_populate for that + */ + pmd_populate(mm, pmd, pmd_pgtable(_pmd)); spin_unlock(&mm->page_table_lock); anon_vma_unlock_write(vma->anon_vma); goto out; diff --git a/mm/memcontrol.c b/mm/memcontrol.c index cb1c9dedf9b6..010d6c14129a 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -4108,8 +4108,6 @@ __mem_cgroup_uncharge_common(struct page *page, enum charge_type ctype, if (mem_cgroup_disabled()) return NULL; - VM_BUG_ON(PageSwapCache(page)); - if (PageTransHuge(page)) { nr_pages <<= compound_order(page); VM_BUG_ON(!PageTransHuge(page)); @@ -4205,6 +4203,18 @@ void mem_cgroup_uncharge_page(struct page *page) if (page_mapped(page)) return; VM_BUG_ON(page->mapping && !PageAnon(page)); + /* + * If the page is in swap cache, uncharge should be deferred + * to the swap path, which also properly accounts swap usage + * and handles memcg lifetime. + * + * Note that this check is not stable and reclaim may add the + * page to swap cache at any time after this. However, if the + * page is not in swap cache by the time page->mapcount hits + * 0, there won't be any page table references to the swap + * slot, and reclaim will free it and not actually write the + * page to disk. + */ if (PageSwapCache(page)) return; __mem_cgroup_uncharge_common(page, MEM_CGROUP_CHARGE_TYPE_ANON, false); diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index a221fac1f47d..1ad92b46753e 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -720,9 +720,12 @@ int __remove_pages(struct zone *zone, unsigned long phys_start_pfn, start = phys_start_pfn << PAGE_SHIFT; size = nr_pages * PAGE_SIZE; ret = release_mem_region_adjustable(&iomem_resource, start, size); - if (ret) - pr_warn("Unable to release resource <%016llx-%016llx> (%d)\n", - start, start + size - 1, ret); + if (ret) { + resource_size_t endres = start + size - 1; + + pr_warn("Unable to release resource <%pa-%pa> (%d)\n", + &start, &endres, ret); + } sections_to_remove = nr_pages / PAGES_PER_SECTION; for (i = 0; i < sections_to_remove; i++) { diff --git a/mm/migrate.c b/mm/migrate.c index 27ed22579fd9..b1f57501de9c 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -165,7 +165,7 @@ static int remove_migration_pte(struct page *new, struct vm_area_struct *vma, pte = arch_make_huge_pte(pte, vma, new, 0); } #endif - flush_cache_page(vma, addr, pte_pfn(pte)); + flush_dcache_page(new); set_pte_at(mm, addr, ptep, pte); if (PageHuge(new)) { diff --git a/mm/mmu_notifier.c b/mm/mmu_notifier.c index be04122fb277..6725ff183374 100644 --- a/mm/mmu_notifier.c +++ b/mm/mmu_notifier.c @@ -40,48 +40,44 @@ void __mmu_notifier_release(struct mm_struct *mm) int id; /* - * srcu_read_lock() here will block synchronize_srcu() in - * mmu_notifier_unregister() until all registered - * ->release() callouts this function makes have - * returned. + * SRCU here will block mmu_notifier_unregister until + * ->release returns. */ id = srcu_read_lock(&srcu); + hlist_for_each_entry_rcu(mn, &mm->mmu_notifier_mm->list, hlist) + /* + * If ->release runs before mmu_notifier_unregister it must be + * handled, as it's the only way for the driver to flush all + * existing sptes and stop the driver from establishing any more + * sptes before all the pages in the mm are freed. + */ + if (mn->ops->release) + mn->ops->release(mn, mm); + srcu_read_unlock(&srcu, id); + spin_lock(&mm->mmu_notifier_mm->lock); while (unlikely(!hlist_empty(&mm->mmu_notifier_mm->list))) { mn = hlist_entry(mm->mmu_notifier_mm->list.first, struct mmu_notifier, hlist); - /* - * Unlink. This will prevent mmu_notifier_unregister() - * from also making the ->release() callout. + * We arrived before mmu_notifier_unregister so + * mmu_notifier_unregister will do nothing other than to wait + * for ->release to finish and for mmu_notifier_unregister to + * return. */ hlist_del_init_rcu(&mn->hlist); - spin_unlock(&mm->mmu_notifier_mm->lock); - - /* - * Clear sptes. (see 'release' description in mmu_notifier.h) - */ - if (mn->ops->release) - mn->ops->release(mn, mm); - - spin_lock(&mm->mmu_notifier_mm->lock); } spin_unlock(&mm->mmu_notifier_mm->lock); /* - * All callouts to ->release() which we have done are complete. - * Allow synchronize_srcu() in mmu_notifier_unregister() to complete - */ - srcu_read_unlock(&srcu, id); - - /* - * mmu_notifier_unregister() may have unlinked a notifier and may - * still be calling out to it. Additionally, other notifiers - * may have been active via vmtruncate() et. al. Block here - * to ensure that all notifier callouts for this mm have been - * completed and the sptes are really cleaned up before returning - * to exit_mmap(). + * synchronize_srcu here prevents mmu_notifier_release from returning to + * exit_mmap (which would proceed with freeing all pages in the mm) + * until the ->release method returns, if it was invoked by + * mmu_notifier_unregister. + * + * The mmu_notifier_mm can't go away from under us because one mm_count + * is held by exit_mmap. */ synchronize_srcu(&srcu); } @@ -292,31 +288,34 @@ void mmu_notifier_unregister(struct mmu_notifier *mn, struct mm_struct *mm) { BUG_ON(atomic_read(&mm->mm_count) <= 0); - spin_lock(&mm->mmu_notifier_mm->lock); if (!hlist_unhashed(&mn->hlist)) { + /* + * SRCU here will force exit_mmap to wait for ->release to + * finish before freeing the pages. + */ int id; + id = srcu_read_lock(&srcu); /* - * Ensure we synchronize up with __mmu_notifier_release(). + * exit_mmap will block in mmu_notifier_release to guarantee + * that ->release is called before freeing the pages. */ - id = srcu_read_lock(&srcu); - - hlist_del_rcu(&mn->hlist); - spin_unlock(&mm->mmu_notifier_mm->lock); - if (mn->ops->release) mn->ops->release(mn, mm); + srcu_read_unlock(&srcu, id); + spin_lock(&mm->mmu_notifier_mm->lock); /* - * Allow __mmu_notifier_release() to complete. + * Can not use list_del_rcu() since __mmu_notifier_release + * can delete it before we hold the lock. */ - srcu_read_unlock(&srcu, id); - } else + hlist_del_init_rcu(&mn->hlist); spin_unlock(&mm->mmu_notifier_mm->lock); + } /* - * Wait for any running method to finish, including ->release() if it - * was run by __mmu_notifier_release() instead of us. + * Wait for any running method to finish, of course including + * ->release if it was run by mmu_notifier_relase instead of us. */ synchronize_srcu(&srcu); diff --git a/mm/pagewalk.c b/mm/pagewalk.c index 35aa294656cd..5da2cbcfdbb5 100644 --- a/mm/pagewalk.c +++ b/mm/pagewalk.c @@ -127,28 +127,7 @@ static int walk_hugetlb_range(struct vm_area_struct *vma, return 0; } -static struct vm_area_struct* hugetlb_vma(unsigned long addr, struct mm_walk *walk) -{ - struct vm_area_struct *vma; - - /* We don't need vma lookup at all. */ - if (!walk->hugetlb_entry) - return NULL; - - VM_BUG_ON(!rwsem_is_locked(&walk->mm->mmap_sem)); - vma = find_vma(walk->mm, addr); - if (vma && vma->vm_start <= addr && is_vm_hugetlb_page(vma)) - return vma; - - return NULL; -} - #else /* CONFIG_HUGETLB_PAGE */ -static struct vm_area_struct* hugetlb_vma(unsigned long addr, struct mm_walk *walk) -{ - return NULL; -} - static int walk_hugetlb_range(struct vm_area_struct *vma, unsigned long addr, unsigned long end, struct mm_walk *walk) @@ -198,30 +177,53 @@ int walk_page_range(unsigned long addr, unsigned long end, if (!walk->mm) return -EINVAL; + VM_BUG_ON(!rwsem_is_locked(&walk->mm->mmap_sem)); + pgd = pgd_offset(walk->mm, addr); do { - struct vm_area_struct *vma; + struct vm_area_struct *vma = NULL; next = pgd_addr_end(addr, end); /* - * handle hugetlb vma individually because pagetable walk for - * the hugetlb page is dependent on the architecture and - * we can't handled it in the same manner as non-huge pages. + * This function was not intended to be vma based. + * But there are vma special cases to be handled: + * - hugetlb vma's + * - VM_PFNMAP vma's */ - vma = hugetlb_vma(addr, walk); + vma = find_vma(walk->mm, addr); if (vma) { - if (vma->vm_end < next) + /* + * There are no page structures backing a VM_PFNMAP + * range, so do not allow split_huge_page_pmd(). + */ + if ((vma->vm_start <= addr) && + (vma->vm_flags & VM_PFNMAP)) { next = vma->vm_end; + pgd = pgd_offset(walk->mm, next); + continue; + } /* - * Hugepage is very tightly coupled with vma, so - * walk through hugetlb entries within a given vma. + * Handle hugetlb vma individually because pagetable + * walk for the hugetlb page is dependent on the + * architecture and we can't handled it in the same + * manner as non-huge pages. */ - err = walk_hugetlb_range(vma, addr, next, walk); - if (err) - break; - pgd = pgd_offset(walk->mm, next); - continue; + if (walk->hugetlb_entry && (vma->vm_start <= addr) && + is_vm_hugetlb_page(vma)) { + if (vma->vm_end < next) + next = vma->vm_end; + /* + * Hugepage is very tightly coupled with vma, + * so walk through hugetlb entries within a + * given vma. + */ + err = walk_hugetlb_range(vma, addr, next, walk); + if (err) + break; + pgd = pgd_offset(walk->mm, next); + continue; + } } if (pgd_none_or_clear_bad(pgd)) { diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index d4abc59ce1d9..0a63658065f0 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -6,7 +6,6 @@ TARGETS += memory-hotplug TARGETS += mqueue TARGETS += net TARGETS += ptrace -TARGETS += soft-dirty TARGETS += vm all: diff --git a/tools/testing/selftests/soft-dirty/Makefile b/tools/testing/selftests/soft-dirty/Makefile deleted file mode 100644 index a9cdc823d6e0..000000000000 --- a/tools/testing/selftests/soft-dirty/Makefile +++ /dev/null @@ -1,10 +0,0 @@ -CFLAGS += -iquote../../../../include/uapi -Wall -soft-dirty: soft-dirty.c - -all: soft-dirty - -clean: - rm -f soft-dirty - -run_tests: all - @./soft-dirty || echo "soft-dirty selftests: [FAIL]" diff --git a/tools/testing/selftests/soft-dirty/soft-dirty.c b/tools/testing/selftests/soft-dirty/soft-dirty.c deleted file mode 100644 index aba4f87f87f0..000000000000 --- a/tools/testing/selftests/soft-dirty/soft-dirty.c +++ /dev/null @@ -1,114 +0,0 @@ -#include <stdlib.h> -#include <stdio.h> -#include <sys/mman.h> -#include <unistd.h> -#include <fcntl.h> -#include <sys/types.h> - -typedef unsigned long long u64; - -#define PME_PRESENT (1ULL << 63) -#define PME_SOFT_DIRTY (1Ull << 55) - -#define PAGES_TO_TEST 3 -#ifndef PAGE_SIZE -#define PAGE_SIZE 4096 -#endif - -static void get_pagemap2(char *mem, u64 *map) -{ - int fd; - - fd = open("/proc/self/pagemap2", O_RDONLY); - if (fd < 0) { - perror("Can't open pagemap2"); - exit(1); - } - - lseek(fd, (unsigned long)mem / PAGE_SIZE * sizeof(u64), SEEK_SET); - read(fd, map, sizeof(u64) * PAGES_TO_TEST); - close(fd); -} - -static inline char map_p(u64 map) -{ - return map & PME_PRESENT ? 'p' : '-'; -} - -static inline char map_sd(u64 map) -{ - return map & PME_SOFT_DIRTY ? 'd' : '-'; -} - -static int check_pte(int step, int page, u64 *map, u64 want) -{ - if ((map[page] & want) != want) { - printf("Step %d Page %d has %c%c, want %c%c\n", - step, page, - map_p(map[page]), map_sd(map[page]), - map_p(want), map_sd(want)); - return 1; - } - - return 0; -} - -static void clear_refs(void) -{ - int fd; - char *v = "4"; - - fd = open("/proc/self/clear_refs", O_WRONLY); - if (write(fd, v, 3) < 3) { - perror("Can't clear soft-dirty bit"); - exit(1); - } - close(fd); -} - -int main(void) -{ - char *mem, x; - u64 map[PAGES_TO_TEST]; - - mem = mmap(NULL, PAGES_TO_TEST * PAGE_SIZE, - PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, 0, 0); - - x = mem[0]; - mem[2 * PAGE_SIZE] = 'c'; - get_pagemap2(mem, map); - - if (check_pte(1, 0, map, PME_PRESENT)) - return 1; - if (check_pte(1, 1, map, 0)) - return 1; - if (check_pte(1, 2, map, PME_PRESENT | PME_SOFT_DIRTY)) - return 1; - - clear_refs(); - get_pagemap2(mem, map); - - if (check_pte(2, 0, map, PME_PRESENT)) - return 1; - if (check_pte(2, 1, map, 0)) - return 1; - if (check_pte(2, 2, map, PME_PRESENT)) - return 1; - - mem[0] = 'a'; - mem[PAGE_SIZE] = 'b'; - x = mem[2 * PAGE_SIZE]; - get_pagemap2(mem, map); - - if (check_pte(3, 0, map, PME_PRESENT | PME_SOFT_DIRTY)) - return 1; - if (check_pte(3, 1, map, PME_PRESENT | PME_SOFT_DIRTY)) - return 1; - if (check_pte(3, 2, map, PME_PRESENT)) - return 1; - - (void)x; /* gcc warn */ - - printf("PASS\n"); - return 0; -} |