diff options
Diffstat (limited to 'arch/ia64')
| -rw-r--r-- | arch/ia64/Kconfig | 5 | ||||
| -rw-r--r-- | arch/ia64/Makefile | 1 | ||||
| -rw-r--r-- | arch/ia64/dig/Makefile | 5 | ||||
| -rw-r--r-- | arch/ia64/dig/machvec_vtd.c | 3 | ||||
| -rw-r--r-- | arch/ia64/hp/common/sba_iommu.c | 82 | ||||
| -rw-r--r-- | arch/ia64/include/asm/acpi.h | 2 | ||||
| -rw-r--r-- | arch/ia64/include/asm/machvec.h | 11 | ||||
| -rw-r--r-- | arch/ia64/include/asm/machvec_dig_vtd.h | 19 | ||||
| -rw-r--r-- | arch/ia64/include/asm/machvec_hpzx1.h | 2 | ||||
| -rw-r--r-- | arch/ia64/include/asm/pci.h | 3 | ||||
| -rw-r--r-- | arch/ia64/kernel/acpi.c | 15 | ||||
| -rw-r--r-- | arch/ia64/kernel/dma-mapping.c | 6 | ||||
| -rw-r--r-- | arch/ia64/kernel/pci-dma.c | 21 | ||||
| -rw-r--r-- | arch/ia64/mm/init.c | 16 |
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); |