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-rw-r--r--arch/ia64/Kconfig5
-rw-r--r--arch/ia64/Makefile1
-rw-r--r--arch/ia64/dig/Makefile5
-rw-r--r--arch/ia64/dig/machvec_vtd.c3
-rw-r--r--arch/ia64/hp/common/sba_iommu.c82
-rw-r--r--arch/ia64/include/asm/acpi.h2
-rw-r--r--arch/ia64/include/asm/machvec.h11
-rw-r--r--arch/ia64/include/asm/machvec_dig_vtd.h19
-rw-r--r--arch/ia64/include/asm/machvec_hpzx1.h2
-rw-r--r--arch/ia64/include/asm/pci.h3
-rw-r--r--arch/ia64/kernel/acpi.c15
-rw-r--r--arch/ia64/kernel/dma-mapping.c6
-rw-r--r--arch/ia64/kernel/pci-dma.c21
-rw-r--r--arch/ia64/mm/init.c16
14 files changed, 40 insertions, 151 deletions
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index a42ab41ee8ab..9a8c7ec60cfc 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -146,11 +146,6 @@ config IA64_DIG
bool "DIG-compliant"
select SWIOTLB
-config IA64_DIG_VTD
- bool "DIG+Intel+IOMMU"
- select INTEL_IOMMU
- select PCI_MSI
-
config IA64_HP_ZX1
bool "HP-zx1/sx1000"
help
diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
index 0b3647efde5d..22deb5e6f346 100644
--- a/arch/ia64/Makefile
+++ b/arch/ia64/Makefile
@@ -51,7 +51,6 @@ head-y := arch/ia64/kernel/head.o
libs-y += arch/ia64/lib/
core-y += arch/ia64/kernel/ arch/ia64/mm/
core-$(CONFIG_IA64_DIG) += arch/ia64/dig/
-core-$(CONFIG_IA64_DIG_VTD) += arch/ia64/dig/
core-$(CONFIG_IA64_GENERIC) += arch/ia64/dig/
core-$(CONFIG_IA64_HP_ZX1) += arch/ia64/dig/
core-$(CONFIG_IA64_SGI_UV) += arch/ia64/uv/
diff --git a/arch/ia64/dig/Makefile b/arch/ia64/dig/Makefile
index e7f830825470..5c2f638c31f4 100644
--- a/arch/ia64/dig/Makefile
+++ b/arch/ia64/dig/Makefile
@@ -7,9 +7,4 @@
#
obj-y := setup.o
-ifeq ($(CONFIG_INTEL_IOMMU), y)
-obj-$(CONFIG_IA64_GENERIC) += machvec.o machvec_vtd.o
-else
obj-$(CONFIG_IA64_GENERIC) += machvec.o
-endif
-
diff --git a/arch/ia64/dig/machvec_vtd.c b/arch/ia64/dig/machvec_vtd.c
deleted file mode 100644
index 7cd3eb471cad..000000000000
--- a/arch/ia64/dig/machvec_vtd.c
+++ /dev/null
@@ -1,3 +0,0 @@
-#define MACHVEC_PLATFORM_NAME dig_vtd
-#define MACHVEC_PLATFORM_HEADER <asm/machvec_dig_vtd.h>
-#include <asm/machvec_init.h>
diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c
index 215fa688b729..a7eff5e6d260 100644
--- a/arch/ia64/hp/common/sba_iommu.c
+++ b/arch/ia64/hp/common/sba_iommu.c
@@ -35,6 +35,7 @@
#include <linux/iommu-helper.h>
#include <linux/dma-mapping.h>
#include <linux/prefetch.h>
+#include <linux/swiotlb.h>
#include <asm/delay.h> /* ia64_get_itc() */
#include <asm/io.h>
@@ -43,8 +44,6 @@
#include <asm/acpi-ext.h>
-extern int swiotlb_late_init_with_default_size (size_t size);
-
#define PFX "IOC: "
/*
@@ -2056,27 +2055,33 @@ static int __init acpi_sba_ioc_init_acpi(void)
/* This has to run before acpi_scan_init(). */
arch_initcall(acpi_sba_ioc_init_acpi);
+static int sba_dma_supported (struct device *dev, u64 mask)
+{
+ /* make sure it's at least 32bit capable */
+ return ((mask & 0xFFFFFFFFUL) == 0xFFFFFFFFUL);
+}
+
+static const struct dma_map_ops sba_dma_ops = {
+ .alloc = sba_alloc_coherent,
+ .free = sba_free_coherent,
+ .map_page = sba_map_page,
+ .unmap_page = sba_unmap_page,
+ .map_sg = sba_map_sg_attrs,
+ .unmap_sg = sba_unmap_sg_attrs,
+ .dma_supported = sba_dma_supported,
+};
+
static int __init
sba_init(void)
{
- if (!ia64_platform_is("hpzx1"))
- return 0;
-
-#if defined(CONFIG_IA64_GENERIC)
- /* If we are booting a kdump kernel, the sba_iommu will
- * cause devices that were not shutdown properly to MCA
- * as soon as they are turned back on. Our only option for
- * a successful kdump kernel boot is to use the swiotlb.
+ /*
+ * If we are booting a kdump kernel, the sba_iommu will cause devices
+ * that were not shutdown properly to MCA as soon as they are turned
+ * back on. Our only option for a successful kdump kernel boot is to
+ * use swiotlb.
*/
- if (is_kdump_kernel()) {
- dma_ops = NULL;
- if (swiotlb_late_init_with_default_size(64 * (1<<20)) != 0)
- panic("Unable to initialize software I/O TLB:"
- " Try machvec=dig boot option");
- machvec_init("dig");
+ if (is_kdump_kernel())
return 0;
- }
-#endif
/*
* ioc_found should be populated by the acpi_sba_ioc_handler's .attach()
@@ -2085,22 +2090,8 @@ sba_init(void)
while (ioc_found)
acpi_sba_ioc_add(ioc_found);
- if (!ioc_list) {
-#ifdef CONFIG_IA64_GENERIC
- /*
- * If we didn't find something sba_iommu can claim, we
- * need to setup the swiotlb and switch to the dig machvec.
- */
- dma_ops = NULL;
- if (swiotlb_late_init_with_default_size(64 * (1<<20)) != 0)
- panic("Unable to find SBA IOMMU or initialize "
- "software I/O TLB: Try machvec=dig boot option");
- machvec_init("dig");
-#else
- panic("Unable to find SBA IOMMU: Try a generic or DIG kernel");
-#endif
+ if (!ioc_list)
return 0;
- }
{
struct pci_bus *b = NULL;
@@ -2108,6 +2099,10 @@ sba_init(void)
sba_connect_bus(b);
}
+ /* no need for swiotlb with the iommu */
+ swiotlb_exit();
+ dma_ops = &sba_dma_ops;
+
#ifdef CONFIG_PROC_FS
ioc_proc_init();
#endif
@@ -2123,12 +2118,6 @@ nosbagart(char *str)
return 1;
}
-static int sba_dma_supported (struct device *dev, u64 mask)
-{
- /* make sure it's at least 32bit capable */
- return ((mask & 0xFFFFFFFFUL) == 0xFFFFFFFFUL);
-}
-
__setup("nosbagart", nosbagart);
static int __init
@@ -2153,18 +2142,3 @@ sba_page_override(char *str)
}
__setup("sbapagesize=",sba_page_override);
-
-const struct dma_map_ops sba_dma_ops = {
- .alloc = sba_alloc_coherent,
- .free = sba_free_coherent,
- .map_page = sba_map_page,
- .unmap_page = sba_unmap_page,
- .map_sg = sba_map_sg_attrs,
- .unmap_sg = sba_unmap_sg_attrs,
- .dma_supported = sba_dma_supported,
-};
-
-void sba_dma_init(void)
-{
- dma_ops = &sba_dma_ops;
-}
diff --git a/arch/ia64/include/asm/acpi.h b/arch/ia64/include/asm/acpi.h
index 9e563df73038..be6bf3e499a6 100644
--- a/arch/ia64/include/asm/acpi.h
+++ b/arch/ia64/include/asm/acpi.h
@@ -43,8 +43,6 @@ static inline const char *acpi_get_sysname (void)
return "uv";
# elif defined (CONFIG_IA64_DIG)
return "dig";
-# elif defined(CONFIG_IA64_DIG_VTD)
- return "dig_vtd";
# else
# error Unknown platform. Fix acpi.c.
# endif
diff --git a/arch/ia64/include/asm/machvec.h b/arch/ia64/include/asm/machvec.h
index fa867e980d87..b22d0499b58c 100644
--- a/arch/ia64/include/asm/machvec.h
+++ b/arch/ia64/include/asm/machvec.h
@@ -16,14 +16,11 @@
struct device;
typedef void ia64_mv_setup_t (char **);
-typedef void ia64_mv_dma_init (void);
extern void machvec_setup (char **);
# if defined (CONFIG_IA64_DIG)
# include <asm/machvec_dig.h>
-# elif defined(CONFIG_IA64_DIG_VTD)
-# include <asm/machvec_dig_vtd.h>
# elif defined (CONFIG_IA64_HP_ZX1)
# include <asm/machvec_hpzx1.h>
# elif defined (CONFIG_IA64_SGI_UV)
@@ -35,7 +32,6 @@ extern void machvec_setup (char **);
# else
# define ia64_platform_name ia64_mv.name
# define platform_setup ia64_mv.setup
-# define platform_dma_init ia64_mv.dma_init
# endif
/* __attribute__((__aligned__(16))) is required to make size of the
@@ -46,14 +42,12 @@ extern void machvec_setup (char **);
struct ia64_machine_vector {
const char *name;
ia64_mv_setup_t *setup;
- ia64_mv_dma_init *dma_init;
} __attribute__((__aligned__(16))); /* align attrib? see above comment */
#define MACHVEC_INIT(name) \
{ \
#name, \
platform_setup, \
- platform_dma_init, \
}
extern struct ia64_machine_vector ia64_mv;
@@ -64,8 +58,6 @@ extern void machvec_init_from_cmdline(const char *cmdline);
# error Unknown configuration. Update arch/ia64/include/asm/machvec.h.
# endif /* CONFIG_IA64_GENERIC */
-extern void swiotlb_dma_init(void);
-
/*
* Define default versions so we can extend machvec for new platforms without having
* to update the machvec files for all existing platforms.
@@ -73,8 +65,5 @@ extern void swiotlb_dma_init(void);
#ifndef platform_setup
# define platform_setup machvec_setup
#endif
-#ifndef platform_dma_init
-# define platform_dma_init swiotlb_dma_init
-#endif
#endif /* _ASM_IA64_MACHVEC_H */
diff --git a/arch/ia64/include/asm/machvec_dig_vtd.h b/arch/ia64/include/asm/machvec_dig_vtd.h
deleted file mode 100644
index bb44eb9039dd..000000000000
--- a/arch/ia64/include/asm/machvec_dig_vtd.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_IA64_MACHVEC_DIG_VTD_h
-#define _ASM_IA64_MACHVEC_DIG_VTD_h
-
-extern ia64_mv_setup_t dig_setup;
-extern ia64_mv_dma_init pci_iommu_alloc;
-
-/*
- * This stuff has dual use!
- *
- * For a generic kernel, the macros are used to initialize the
- * platform's machvec structure. When compiling a non-generic kernel,
- * the macros are used directly.
- */
-#define ia64_platform_name "dig_vtd"
-#define platform_setup dig_setup
-#define platform_dma_init pci_iommu_alloc
-
-#endif /* _ASM_IA64_MACHVEC_DIG_VTD_h */
diff --git a/arch/ia64/include/asm/machvec_hpzx1.h b/arch/ia64/include/asm/machvec_hpzx1.h
index 5299ac38bfb6..7d37998ffdbf 100644
--- a/arch/ia64/include/asm/machvec_hpzx1.h
+++ b/arch/ia64/include/asm/machvec_hpzx1.h
@@ -3,7 +3,6 @@
#define _ASM_IA64_MACHVEC_HPZX1_h
extern ia64_mv_setup_t dig_setup;
-extern ia64_mv_dma_init sba_dma_init;
/*
* This stuff has dual use!
@@ -14,6 +13,5 @@ extern ia64_mv_dma_init sba_dma_init;
*/
#define ia64_platform_name "hpzx1"
#define platform_setup dig_setup
-#define platform_dma_init sba_dma_init
#endif /* _ASM_IA64_MACHVEC_HPZX1_h */
diff --git a/arch/ia64/include/asm/pci.h b/arch/ia64/include/asm/pci.h
index ef91b780a3f2..8c163d1d0189 100644
--- a/arch/ia64/include/asm/pci.h
+++ b/arch/ia64/include/asm/pci.h
@@ -69,7 +69,4 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
return channel ? isa_irq_to_vector(15) : isa_irq_to_vector(14);
}
-#ifdef CONFIG_INTEL_IOMMU
-extern void pci_iommu_alloc(void);
-#endif
#endif /* _ASM_IA64_PCI_H */
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index a63e472f5317..644f34e4342e 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -65,9 +65,6 @@ acpi_get_sysname(void)
struct acpi_table_rsdp *rsdp;
struct acpi_table_xsdt *xsdt;
struct acpi_table_header *hdr;
-#ifdef CONFIG_INTEL_IOMMU
- u64 i, nentries;
-#endif
rsdp_phys = acpi_find_rsdp();
if (!rsdp_phys) {
@@ -98,18 +95,6 @@ acpi_get_sysname(void)
return "uv";
}
-#ifdef CONFIG_INTEL_IOMMU
- /* Look for Intel IOMMU */
- nentries = (hdr->length - sizeof(*hdr)) /
- sizeof(xsdt->table_offset_entry[0]);
- for (i = 0; i < nentries; i++) {
- hdr = __va(xsdt->table_offset_entry[i]);
- if (strncmp(hdr->signature, ACPI_SIG_DMAR,
- sizeof(ACPI_SIG_DMAR) - 1) == 0)
- return "dig_vtd";
- }
-#endif
-
return "dig";
}
#endif /* CONFIG_IA64_GENERIC */
diff --git a/arch/ia64/kernel/dma-mapping.c b/arch/ia64/kernel/dma-mapping.c
index 4be5ee04ccfa..53aaa8597920 100644
--- a/arch/ia64/kernel/dma-mapping.c
+++ b/arch/ia64/kernel/dma-mapping.c
@@ -1,6 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/dma-direct.h>
-#include <linux/swiotlb.h>
#include <linux/export.h>
/* Set this to 1 if there is a HW IOMMU in the system */
@@ -27,9 +26,4 @@ long arch_dma_coherent_to_pfn(struct device *dev, void *cpu_addr,
{
return page_to_pfn(virt_to_page(cpu_addr));
}
-
-void __init swiotlb_dma_init(void)
-{
- swiotlb_init(1);
-}
#endif
diff --git a/arch/ia64/kernel/pci-dma.c b/arch/ia64/kernel/pci-dma.c
index fe988c49f01c..c5a8df9e77d0 100644
--- a/arch/ia64/kernel/pci-dma.c
+++ b/arch/ia64/kernel/pci-dma.c
@@ -34,24 +34,3 @@ static int __init pci_iommu_init(void)
/* Must execute after PCI subsystem */
fs_initcall(pci_iommu_init);
-
-void __init pci_iommu_alloc(void)
-{
- /*
- * The order of these functions is important for
- * fall-back/fail-over reasons
- */
- detect_intel_iommu();
-
-#ifdef CONFIG_SWIOTLB
- if (!iommu_detected) {
-#ifdef CONFIG_IA64_GENERIC
- printk(KERN_INFO "PCI-DMA: Re-initialize machine vector.\n");
- machvec_init("dig");
- swiotlb_dma_init();
-#else
- panic("Unable to find Intel IOMMU");
-#endif /* CONFIG_IA64_GENERIC */
- }
-#endif /* CONFIG_SWIOTLB */
-}
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 9a4a16439900..ed3ced65705e 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -9,6 +9,7 @@
#include <linux/init.h>
#include <linux/dma-noncoherent.h>
+#include <linux/dmar.h>
#include <linux/efi.h>
#include <linux/elf.h>
#include <linux/memblock.h>
@@ -23,6 +24,7 @@
#include <linux/proc_fs.h>
#include <linux/bitops.h>
#include <linux/kexec.h>
+#include <linux/swiotlb.h>
#include <asm/dma.h>
#include <asm/io.h>
@@ -633,11 +635,17 @@ mem_init (void)
BUG_ON(PTRS_PER_PTE * sizeof(pte_t) != PAGE_SIZE);
/*
- * This needs to be called _after_ the command line has been parsed but _before_
- * any drivers that may need the PCI DMA interface are initialized or bootmem has
- * been freed.
+ * This needs to be called _after_ the command line has been parsed but
+ * _before_ any drivers that may need the PCI DMA interface are
+ * initialized or bootmem has been freed.
*/
- platform_dma_init();
+#ifdef CONFIG_INTEL_IOMMU
+ detect_intel_iommu();
+ if (!iommu_detected)
+#endif
+#ifdef CONFIG_SWIOTLB
+ swiotlb_init(1);
+#endif
#ifdef CONFIG_FLATMEM
BUG_ON(!mem_map);