diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/fixmap_64.h | 76 |
1 files changed, 69 insertions, 7 deletions
diff --git a/arch/x86/include/asm/fixmap_64.h b/arch/x86/include/asm/fixmap_64.h index baff6d0da99..95acae0daa5 100644 --- a/arch/x86/include/asm/fixmap_64.h +++ b/arch/x86/include/asm/fixmap_64.h @@ -6,25 +6,63 @@ * for more details. * * Copyright (C) 1998 Ingo Molnar + * + * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999 + * x86_32 and x86_64 integration by Gustavo F. Padovan, February 2009 */ #ifndef _ASM_X86_FIXMAP_64_H #define _ASM_X86_FIXMAP_64_H +#ifndef __ASSEMBLY__ #include <linux/kernel.h> #include <asm/acpi.h> #include <asm/apicdef.h> #include <asm/page.h> +#ifdef CONFIG_X86_32 +#include <linux/threads.h> +#include <asm/kmap_types.h> +#else #include <asm/vsyscall.h> #ifdef CONFIG_EFI #include <asm/efi.h> #endif +#endif + +/* + * We can't declare FIXADDR_TOP as variable for x86_64 because vsyscall + * uses fixmaps that relies on FIXADDR_TOP for proper address calculation. + * Because of this, FIXADDR_TOP x86 integration was left as later work. + */ +#ifdef CONFIG_X86_32 +/* used by vmalloc.c, vsyscall.lds.S. + * + * Leave one empty page between vmalloc'ed areas and + * the start of the fixmap. + */ +extern unsigned long __FIXADDR_TOP; +#define FIXADDR_TOP ((unsigned long)__FIXADDR_TOP) + +#define FIXADDR_USER_START __fix_to_virt(FIX_VDSO) +#define FIXADDR_USER_END __fix_to_virt(FIX_VDSO - 1) +#else +#define FIXADDR_TOP (VSYSCALL_END-PAGE_SIZE) + +/* Only covers 32bit vsyscalls currently. Need another set for 64bit. */ +#define FIXADDR_USER_START ((unsigned long)VSYSCALL32_VSYSCALL) +#define FIXADDR_USER_END (FIXADDR_USER_START + PAGE_SIZE) +#endif /* * Here we define all the compile-time 'special' virtual * addresses. The point is to have a constant address at * compile time, but to set the physical address only * in the boot process. + * for x86_32: We allocate these special addresses + * from the end of virtual memory (0xfffff000) backwards. + * Also this lets us do fail-safe vmalloc(), we + * can guarantee that these special addresses and + * vmalloc()-ed addresses never overlap. * * These 'compile-time allocated' memory buffers are * fixed-size 4k pages (or larger if used with an increment @@ -34,12 +72,16 @@ * TLB entries of such buffers will not be flushed across * task switches. */ - enum fixed_addresses { +#ifdef CONFIG_X86_32 + FIX_HOLE, + FIX_VDSO, +#else VSYSCALL_LAST_PAGE, VSYSCALL_FIRST_PAGE = VSYSCALL_LAST_PAGE + ((VSYSCALL_END-VSYSCALL_START) >> PAGE_SHIFT) - 1, VSYSCALL_HPET, +#endif FIX_DBGP_BASE, FIX_EARLYCON_MEM_BASE, #ifdef CONFIG_X86_LOCAL_APIC @@ -49,11 +91,32 @@ enum fixed_addresses { FIX_IO_APIC_BASE_0, FIX_IO_APIC_BASE_END = FIX_IO_APIC_BASE_0 + MAX_IO_APICS - 1, #endif +#ifdef CONFIG_X86_64 #ifdef CONFIG_EFI FIX_EFI_IO_MAP_LAST_PAGE, FIX_EFI_IO_MAP_FIRST_PAGE = FIX_EFI_IO_MAP_LAST_PAGE + MAX_EFI_IO_PAGES - 1, #endif +#endif +#ifdef CONFIG_X86_VISWS_APIC + FIX_CO_CPU, /* Cobalt timer */ + FIX_CO_APIC, /* Cobalt APIC Redirection Table */ + FIX_LI_PCIA, /* Lithium PCI Bridge A */ + FIX_LI_PCIB, /* Lithium PCI Bridge B */ +#endif +#ifdef CONFIG_X86_F00F_BUG + FIX_F00F_IDT, /* Virtual mapping for IDT */ +#endif +#ifdef CONFIG_X86_CYCLONE_TIMER + FIX_CYCLONE_TIMER, /*cyclone timer register*/ +#endif +#ifdef CONFIG_X86_32 + FIX_KMAP_BEGIN, /* reserved pte's for temporary kernel mappings */ + FIX_KMAP_END = FIX_KMAP_BEGIN+(KM_TYPE_NR*NR_CPUS)-1, +#ifdef CONFIG_PCI_MMCONFIG + FIX_PCIE_MCFG, +#endif +#endif #ifdef CONFIG_PARAVIRT FIX_PARAVIRT_BOOTMAP, #endif @@ -73,20 +136,19 @@ enum fixed_addresses { FIX_BTMAP_END = __end_of_permanent_fixed_addresses + 256 - (__end_of_permanent_fixed_addresses & 255), FIX_BTMAP_BEGIN = FIX_BTMAP_END + NR_FIX_BTMAPS*FIX_BTMAPS_SLOTS - 1, +#ifdef CONFIG_X86_32 + FIX_WP_TEST, +#endif __end_of_fixed_addresses }; -extern void reserve_top_address(unsigned long reserve); -#define FIXADDR_TOP (VSYSCALL_END-PAGE_SIZE) +extern void reserve_top_address(unsigned long reserve); #define FIXADDR_SIZE (__end_of_permanent_fixed_addresses << PAGE_SHIFT) #define FIXADDR_BOOT_SIZE (__end_of_fixed_addresses << PAGE_SHIFT) #define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE) #define FIXADDR_BOOT_START (FIXADDR_TOP - FIXADDR_BOOT_SIZE) -/* Only covers 32bit vsyscalls currently. Need another set for 64bit. */ -#define FIXADDR_USER_START ((unsigned long)VSYSCALL32_VSYSCALL) -#define FIXADDR_USER_END (FIXADDR_USER_START + PAGE_SIZE) - +#endif /* !__ASSEMBLY__ */ #endif /* _ASM_X86_FIXMAP_64_H */ |