diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/ia64/kernel/efi.c | 4 | ||||
| -rw-r--r-- | arch/ia64/kernel/setup.c | 14 | ||||
| -rw-r--r-- | arch/x86/boot/compressed/head_32.S | 15 | ||||
| -rw-r--r-- | arch/x86/boot/compressed/misc_32.c | 3 | ||||
| -rw-r--r-- | arch/x86/boot/header.S | 7 | ||||
| -rw-r--r-- | arch/x86/kernel/asm-offsets_32.c | 7 | ||||
| -rw-r--r-- | arch/x86/kernel/e820_32.c | 18 | ||||
| -rw-r--r-- | arch/x86/kernel/e820_64.c | 22 | ||||
| -rw-r--r-- | arch/x86/kernel/efi_32.c | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/head_32.S | 44 | ||||
| -rw-r--r-- | arch/x86/kernel/io_apic_64.c | 59 | ||||
| -rw-r--r-- | arch/x86/kernel/pci-dma_64.c | 5 | ||||
| -rw-r--r-- | arch/x86/kernel/setup_32.c | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/setup_64.c | 9 | ||||
| -rw-r--r-- | arch/x86/mm/pageattr_64.c | 6 | ||||
| -rw-r--r-- | arch/x86_64/Kconfig | 32 |
16 files changed, 234 insertions, 19 deletions
diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c index 8e4894b205e2..3f7ea13358e9 100644 --- a/arch/ia64/kernel/efi.c +++ b/arch/ia64/kernel/efi.c @@ -1090,7 +1090,8 @@ efi_memmap_init(unsigned long *s, unsigned long *e) void efi_initialize_iomem_resources(struct resource *code_resource, - struct resource *data_resource) + struct resource *data_resource, + struct resource *bss_resource) { struct resource *res; void *efi_map_start, *efi_map_end, *p; @@ -1171,6 +1172,7 @@ efi_initialize_iomem_resources(struct resource *code_resource, */ insert_resource(res, code_resource); insert_resource(res, data_resource); + insert_resource(res, bss_resource); #ifdef CONFIG_KEXEC insert_resource(res, &efi_memmap_res); insert_resource(res, &boot_param_res); diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c index cbf67f1aa291..ae6c3c02e117 100644 --- a/arch/ia64/kernel/setup.c +++ b/arch/ia64/kernel/setup.c @@ -90,7 +90,12 @@ static struct resource code_resource = { .name = "Kernel code", .flags = IORESOURCE_BUSY | IORESOURCE_MEM }; -extern char _text[], _end[], _etext[]; + +static struct resource bss_resource = { + .name = "Kernel bss", + .flags = IORESOURCE_BUSY | IORESOURCE_MEM +}; +extern char _text[], _end[], _etext[], _edata[], _bss[]; unsigned long ia64_max_cacheline_size; @@ -200,8 +205,11 @@ static int __init register_memory(void) code_resource.start = ia64_tpa(_text); code_resource.end = ia64_tpa(_etext) - 1; data_resource.start = ia64_tpa(_etext); - data_resource.end = ia64_tpa(_end) - 1; - efi_initialize_iomem_resources(&code_resource, &data_resource); + data_resource.end = ia64_tpa(_edata) - 1; + bss_resource.start = ia64_tpa(_bss); + bss_resource.end = ia64_tpa(_end) - 1; + efi_initialize_iomem_resources(&code_resource, &data_resource, + &bss_resource); return 0; } diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S index f35ea2237522..a0ae2e7f6cec 100644 --- a/arch/x86/boot/compressed/head_32.S +++ b/arch/x86/boot/compressed/head_32.S @@ -27,13 +27,22 @@ #include <asm/segment.h> #include <asm/page.h> #include <asm/boot.h> +#include <asm/asm-offsets.h> .section ".text.head","ax",@progbits .globl startup_32 startup_32: - cld - cli + /* check to see if KEEP_SEGMENTS flag is meaningful */ + cmpw $0x207, BP_version(%esi) + jb 1f + + /* test KEEP_SEGMENTS flag to see if the bootloader is asking + * us to not reload segments */ + testb $(1<<6), BP_loadflags(%esi) + jnz 2f + +1: cli movl $(__BOOT_DS),%eax movl %eax,%ds movl %eax,%es @@ -41,6 +50,8 @@ startup_32: movl %eax,%gs movl %eax,%ss +2: cld + /* Calculate the delta between where we were compiled to run * at and where we were actually loaded at. This can only be done * with a short local call on x86. Nothing else will tell us what diff --git a/arch/x86/boot/compressed/misc_32.c b/arch/x86/boot/compressed/misc_32.c index 1dc1e19c0a9f..b74d60d1b2fa 100644 --- a/arch/x86/boot/compressed/misc_32.c +++ b/arch/x86/boot/compressed/misc_32.c @@ -247,6 +247,9 @@ static void putstr(const char *s) int x,y,pos; char c; + if (RM_SCREEN_INFO.orig_video_mode == 0 && lines == 0 && cols == 0) + return; + x = RM_SCREEN_INFO.orig_x; y = RM_SCREEN_INFO.orig_y; diff --git a/arch/x86/boot/header.S b/arch/x86/boot/header.S index f3140e596d40..8353c81c41c0 100644 --- a/arch/x86/boot/header.S +++ b/arch/x86/boot/header.S @@ -119,7 +119,7 @@ _start: # Part 2 of the header, from the old setup.S .ascii "HdrS" # header signature - .word 0x0206 # header version number (>= 0x0105) + .word 0x0207 # header version number (>= 0x0105) # or else old loadlin-1.5 will fail) .globl realmode_swtch realmode_swtch: .word 0, 0 # default_switch, SETUPSEG @@ -214,6 +214,11 @@ cmdline_size: .long COMMAND_LINE_SIZE-1 #length of the command line, #added with boot protocol #version 2.06 +hardware_subarch: .long 0 # subarchitecture, added with 2.07 + # default to 0 for normal x86 PC + +hardware_subarch_data: .quad 0 + # End of setup header ##################################################### .section ".inittext", "ax" diff --git a/arch/x86/kernel/asm-offsets_32.c b/arch/x86/kernel/asm-offsets_32.c index f1b7cdda82b3..f8764716b0c0 100644 --- a/arch/x86/kernel/asm-offsets_32.c +++ b/arch/x86/kernel/asm-offsets_32.c @@ -15,6 +15,7 @@ #include <asm/fixmap.h> #include <asm/processor.h> #include <asm/thread_info.h> +#include <asm/bootparam.h> #include <asm/elf.h> #include <xen/interface/xen.h> @@ -146,4 +147,10 @@ void foo(void) OFFSET(LGUEST_PAGES_regs_errcode, lguest_pages, regs.errcode); OFFSET(LGUEST_PAGES_regs, lguest_pages, regs); #endif + + BLANK(); + OFFSET(BP_scratch, boot_params, scratch); + OFFSET(BP_loadflags, boot_params, hdr.loadflags); + OFFSET(BP_hardware_subarch, boot_params, hdr.hardware_subarch); + OFFSET(BP_version, boot_params, hdr.version); } diff --git a/arch/x86/kernel/e820_32.c b/arch/x86/kernel/e820_32.c index 58fd54eb5577..18f500d185a2 100644 --- a/arch/x86/kernel/e820_32.c +++ b/arch/x86/kernel/e820_32.c @@ -51,6 +51,13 @@ struct resource code_resource = { .flags = IORESOURCE_BUSY | IORESOURCE_MEM }; +struct resource bss_resource = { + .name = "Kernel bss", + .start = 0, + .end = 0, + .flags = IORESOURCE_BUSY | IORESOURCE_MEM +}; + static struct resource system_rom_resource = { .name = "System ROM", .start = 0xf0000, @@ -254,7 +261,9 @@ static void __init probe_roms(void) * and also for regions reported as reserved by the e820. */ static void __init -legacy_init_iomem_resources(struct resource *code_resource, struct resource *data_resource) +legacy_init_iomem_resources(struct resource *code_resource, + struct resource *data_resource, + struct resource *bss_resource) { int i; @@ -287,6 +296,7 @@ legacy_init_iomem_resources(struct resource *code_resource, struct resource *dat */ request_resource(res, code_resource); request_resource(res, data_resource); + request_resource(res, bss_resource); #ifdef CONFIG_KEXEC if (crashk_res.start != crashk_res.end) request_resource(res, &crashk_res); @@ -307,9 +317,11 @@ static int __init request_standard_resources(void) printk("Setting up standard PCI resources\n"); if (efi_enabled) - efi_initialize_iomem_resources(&code_resource, &data_resource); + efi_initialize_iomem_resources(&code_resource, + &data_resource, &bss_resource); else - legacy_init_iomem_resources(&code_resource, &data_resource); + legacy_init_iomem_resources(&code_resource, + &data_resource, &bss_resource); /* EFI systems may still have VGA */ request_resource(&iomem_resource, &video_ram_resource); diff --git a/arch/x86/kernel/e820_64.c b/arch/x86/kernel/e820_64.c index 57616865d8a0..04698e0b056c 100644 --- a/arch/x86/kernel/e820_64.c +++ b/arch/x86/kernel/e820_64.c @@ -47,7 +47,7 @@ unsigned long end_pfn_map; */ static unsigned long __initdata end_user_pfn = MAXMEM>>PAGE_SHIFT; -extern struct resource code_resource, data_resource; +extern struct resource code_resource, data_resource, bss_resource; /* Check for some hardcoded bad areas that early boot is not allowed to touch */ static inline int bad_addr(unsigned long *addrp, unsigned long size) @@ -225,6 +225,7 @@ void __init e820_reserve_resources(void) */ request_resource(res, &code_resource); request_resource(res, &data_resource); + request_resource(res, &bss_resource); #ifdef CONFIG_KEXEC if (crashk_res.start != crashk_res.end) request_resource(res, &crashk_res); @@ -729,3 +730,22 @@ __init void e820_setup_gap(void) printk(KERN_INFO "Allocating PCI resources starting at %lx (gap: %lx:%lx)\n", pci_mem_start, gapstart, gapsize); } + +int __init arch_get_ram_range(int slot, u64 *addr, u64 *size) +{ + int i; + + if (slot < 0 || slot >= e820.nr_map) + return -1; + for (i = slot; i < e820.nr_map; i++) { + if (e820.map[i].type != E820_RAM) + continue; + break; + } + if (i == e820.nr_map || e820.map[i].addr > (max_pfn << PAGE_SHIFT)) + return -1; + *addr = e820.map[i].addr; + *size = min_t(u64, e820.map[i].size + e820.map[i].addr, + max_pfn << PAGE_SHIFT) - *addr; + return i + 1; +} diff --git a/arch/x86/kernel/efi_32.c b/arch/x86/kernel/efi_32.c index b42558c48e9d..e2be78f49399 100644 --- a/arch/x86/kernel/efi_32.c +++ b/arch/x86/kernel/efi_32.c @@ -603,7 +603,8 @@ void __init efi_enter_virtual_mode(void) void __init efi_initialize_iomem_resources(struct resource *code_resource, - struct resource *data_resource) + struct resource *data_resource, + struct resource *bss_resource) { struct resource *res; efi_memory_desc_t *md; @@ -675,6 +676,7 @@ efi_initialize_iomem_resources(struct resource *code_resource, if (md->type == EFI_CONVENTIONAL_MEMORY) { request_resource(res, code_resource); request_resource(res, data_resource); + request_resource(res, bss_resource); #ifdef CONFIG_KEXEC request_resource(res, &crashk_res); #endif diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S index 39677965e161..00b1c2c56454 100644 --- a/arch/x86/kernel/head_32.S +++ b/arch/x86/kernel/head_32.S @@ -79,22 +79,30 @@ INIT_MAP_BEYOND_END = BOOTBITMAP_SIZE + (PAGE_TABLE_SIZE + ALLOCATOR_SLOP)*PAGE_ */ .section .text.head,"ax",@progbits ENTRY(startup_32) + /* check to see if KEEP_SEGMENTS flag is meaningful */ + cmpw $0x207, BP_version(%esi) + jb 1f + + /* test KEEP_SEGMENTS flag to see if the bootloader is asking + us to not reload segments */ + testb $(1<<6), BP_loadflags(%esi) + jnz 2f /* * Set segments to known values. */ - cld - lgdt boot_gdt_descr - __PAGE_OFFSET +1: lgdt boot_gdt_descr - __PAGE_OFFSET movl $(__BOOT_DS),%eax movl %eax,%ds movl %eax,%es movl %eax,%fs movl %eax,%gs +2: /* * Clear BSS first so that there are no surprises... - * No need to cld as DF is already clear from cld above... */ + cld xorl %eax,%eax movl $__bss_start - __PAGE_OFFSET,%edi movl $__bss_stop - __PAGE_OFFSET,%ecx @@ -128,6 +136,35 @@ ENTRY(startup_32) movsl 1: +#ifdef CONFIG_PARAVIRT + cmpw $0x207, (boot_params + BP_version - __PAGE_OFFSET) + jb default_entry + + /* Paravirt-compatible boot parameters. Look to see what architecture + we're booting under. */ + movl (boot_params + BP_hardware_subarch - __PAGE_OFFSET), %eax + cmpl $num_subarch_entries, %eax + jae bad_subarch + + movl subarch_entries - __PAGE_OFFSET(,%eax,4), %eax + subl $__PAGE_OFFSET, %eax + jmp *%eax + +bad_subarch: +WEAK(lguest_entry) +WEAK(xen_entry) + /* Unknown implementation; there's really + nothing we can do at this point. */ + ud2a +.data +subarch_entries: + .long default_entry /* normal x86/PC */ + .long lguest_entry /* lguest hypervisor */ + .long xen_entry /* Xen hypervisor */ +num_subarch_entries = (. - subarch_entries) / 4 +.previous +#endif /* CONFIG_PARAVIRT */ + /* * Initialize page tables. This creates a PDE and a set of page * tables, which are located immediately beyond _end. The variable @@ -140,6 +177,7 @@ ENTRY(startup_32) */ page_pde_offset = (__PAGE_OFFSET >> 20); +default_entry: movl $(pg0 - __PAGE_OFFSET), %edi movl $(swapper_pg_dir - __PAGE_OFFSET), %edx movl $0x007, %eax /* 0x007 = PRESENT+RW+USER */ diff --git a/arch/x86/kernel/io_apic_64.c b/arch/x86/kernel/io_apic_64.c index b3c2d268d708..953328b55a30 100644 --- a/arch/x86/kernel/io_apic_64.c +++ b/arch/x86/kernel/io_apic_64.c @@ -31,6 +31,7 @@ #include <linux/sysdev.h> #include <linux/msi.h> #include <linux/htirq.h> +#include <linux/dmar.h> #ifdef CONFIG_ACPI #include <acpi/acpi_bus.h> #endif @@ -2031,8 +2032,64 @@ void arch_teardown_msi_irq(unsigned int irq) destroy_irq(irq); } -#endif /* CONFIG_PCI_MSI */ +#ifdef CONFIG_DMAR +#ifdef CONFIG_SMP +static void dmar_msi_set_affinity(unsigned int irq, cpumask_t mask) +{ + struct irq_cfg *cfg = irq_cfg + irq; + struct msi_msg msg; + unsigned int dest; + cpumask_t tmp; + + cpus_and(tmp, mask, cpu_online_map); + if (cpus_empty(tmp)) + return; + + if (assign_irq_vector(irq, mask)) + return; + + cpus_and(tmp, cfg->domain, mask); + dest = cpu_mask_to_apicid(tmp); + + dmar_msi_read(irq, &msg); + + msg.data &= ~MSI_DATA_VECTOR_MASK; + msg.data |= MSI_DATA_VECTOR(cfg->vector); + msg.address_lo &= ~MSI_ADDR_DEST_ID_MASK; + msg.address_lo |= MSI_ADDR_DEST_ID(dest); + + dmar_msi_write(irq, &msg); + irq_desc[irq].affinity = mask; +} +#endif /* CONFIG_SMP */ + +struct irq_chip dmar_msi_type = { + .name = "DMAR_MSI", + .unmask = dmar_msi_unmask, + .mask = dmar_msi_mask, + .ack = ack_apic_edge, +#ifdef CONFIG_SMP + .set_affinity = dmar_msi_set_affinity, +#endif + .retrigger = ioapic_retrigger_irq, +}; + +int arch_setup_dmar_msi(unsigned int irq) +{ + int ret; + struct msi_msg msg; + + ret = msi_compose_msg(NULL, irq, &msg); + if (ret < 0) + return ret; + dmar_msi_write(irq, &msg); + set_irq_chip_and_handler_name(irq, &dmar_msi_type, handle_edge_irq, + "edge"); + return 0; +} +#endif +#endif /* CONFIG_PCI_MSI */ /* * Hypertransport interrupt support */ diff --git a/arch/x86/kernel/pci-dma_64.c b/arch/x86/kernel/pci-dma_64.c index afaf9f12c032..393e2725a6e3 100644 --- a/arch/x86/kernel/pci-dma_64.c +++ b/arch/x86/kernel/pci-dma_64.c @@ -7,6 +7,7 @@ #include <linux/string.h> #include <linux/pci.h> #include <linux/module.h> +#include <linux/dmar.h> #include <asm/io.h> #include <asm/iommu.h> #include <asm/calgary.h> @@ -305,6 +306,8 @@ void __init pci_iommu_alloc(void) detect_calgary(); #endif + detect_intel_iommu(); + #ifdef CONFIG_SWIOTLB pci_swiotlb_init(); #endif @@ -316,6 +319,8 @@ static int __init pci_iommu_init(void) calgary_iommu_init(); #endif + intel_iommu_init(); + #ifdef CONFIG_IOMMU gart_iommu_init(); #endif diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c index ba2e165a8a0f..cc0e91447b76 100644 --- a/arch/x86/kernel/setup_32.c +++ b/arch/x86/kernel/setup_32.c @@ -60,6 +60,7 @@ #include <asm/vmi.h> #include <setup_arch.h> #include <bios_ebda.h> +#include <asm/cacheflush.h> /* This value is set up by the early boot code to point to the value immediately after the boot time page tables. It contains a *physical* @@ -73,6 +74,7 @@ int disable_pse __devinitdata = 0; */ extern struct resource code_resource; extern struct resource data_resource; +extern struct resource bss_resource; /* cpu data as detected by the assembly code in head.S */ struct cpuinfo_x86 new_cpu_data __cpuinitdata = { 0, 0, 0, 0, -1, 1, 0, 0, -1 }; @@ -600,6 +602,8 @@ void __init setup_arch(char **cmdline_p) code_resource.end = virt_to_phys(_etext)-1; data_resource.start = virt_to_phys(_etext); data_resource.end = virt_to_phys(_edata)-1; + bss_resource.start = virt_to_phys(&__bss_start); + bss_resource.end = virt_to_phys(&__bss_stop)-1; parse_early_param(); diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c index 31322d42eaae..e7a9e36bd52d 100644 --- a/arch/x86/kernel/setup_64.c +++ b/arch/x86/kernel/setup_64.c @@ -58,6 +58,7 @@ #include <asm/numa.h> #include <asm/sections.h> #include <asm/dmi.h> +#include <asm/cacheflush.h> /* * Machine setup.. @@ -133,6 +134,12 @@ struct resource code_resource = { .end = 0, .flags = IORESOURCE_RAM, }; +struct resource bss_resource = { + .name = "Kernel bss", + .start = 0, + .end = 0, + .flags = IORESOURCE_RAM, +}; #ifdef CONFIG_PROC_VMCORE /* elfcorehdr= specifies the location of elf core header @@ -276,6 +283,8 @@ void __init setup_arch(char **cmdline_p) code_resource.end = virt_to_phys(&_etext)-1; data_resource.start = virt_to_phys(&_etext); data_resource.end = virt_to_phys(&_edata)-1; + bss_resource.start = virt_to_phys(&__bss_start); + bss_resource.end = virt_to_phys(&__bss_stop)-1; early_identify_cpu(&boot_cpu_data); diff --git a/arch/x86/mm/pageattr_64.c b/arch/x86/mm/pageattr_64.c index c7b7dfe1d405..c40afbaaf93d 100644 --- a/arch/x86/mm/pageattr_64.c +++ b/arch/x86/mm/pageattr_64.c @@ -61,10 +61,10 @@ static struct page *split_large_page(unsigned long address, pgprot_t prot, return base; } -static void cache_flush_page(void *adr) +void clflush_cache_range(void *adr, int size) { int i; - for (i = 0; i < PAGE_SIZE; i += boot_cpu_data.x86_clflush_size) + for (i = 0; i < size; i += boot_cpu_data.x86_clflush_size) clflush(adr+i); } @@ -80,7 +80,7 @@ static void flush_kernel_map(void *arg) asm volatile("wbinvd" ::: "memory"); else list_for_each_entry(pg, l, lru) { void *adr = page_address(pg); - cache_flush_page(adr); + clflush_cache_range(adr, PAGE_SIZE); } __flush_tlb_all(); } diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig index aab25f3ba3ce..c2d24991bb2b 100644 --- a/arch/x86_64/Kconfig +++ b/arch/x86_64/Kconfig @@ -750,6 +750,38 @@ config PCI_DOMAINS depends on PCI default y +config DMAR + bool "Support for DMA Remapping Devices (EXPERIMENTAL)" + depends on PCI_MSI && ACPI && EXPERIMENTAL + default y + help + DMA remapping (DMAR) devices support enables independent address + translations for Direct Memory Access (DMA) from devices. + These DMA remapping devices are reported via ACPI tables + and include PCI device scope covered by these DMA + remapping devices. + +config DMAR_GFX_WA + bool "Support for Graphics workaround" + depends on DMAR + default y + help + Current Graphics drivers tend to use physical address + for DMA and avoid using DMA APIs. Setting this config + option permits the IOMMU driver to set a unity map for + all the OS-visible memory. Hence the driver can continue + to use physical addresses for DMA. + +config DMAR_FLOPPY_WA + bool + depends on DMAR + default y + help + Floppy disk drivers are know to bypass DMA API calls + thereby failing to work when IOMMU is enabled. This + workaround will setup a 1:1 mapping for the first + 16M to make floppy (an ISA device) work. + source "drivers/pci/pcie/Kconfig" source "drivers/pci/Kconfig" |
