diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/x86/include/asm/fixmap.h')
| -rw-r--r-- | ANDROID_3.4.5/arch/x86/include/asm/fixmap.h | 238 |
1 files changed, 0 insertions, 238 deletions
diff --git a/ANDROID_3.4.5/arch/x86/include/asm/fixmap.h b/ANDROID_3.4.5/arch/x86/include/asm/fixmap.h deleted file mode 100644 index 4da3c0c4..00000000 --- a/ANDROID_3.4.5/arch/x86/include/asm/fixmap.h +++ /dev/null @@ -1,238 +0,0 @@ -/* - * fixmap.h: compile-time virtual memory allocation - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * 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_H -#define _ASM_X86_FIXMAP_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> -#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 - * higher than 1). Use set_fixmap(idx,phys) to associate - * physical memory with fixmap indices. - * - * 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, - VVAR_PAGE, - VSYSCALL_HPET, -#endif - FIX_DBGP_BASE, - FIX_EARLYCON_MEM_BASE, -#ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT - FIX_OHCI1394_BASE, -#endif -#ifdef CONFIG_X86_LOCAL_APIC - FIX_APIC_BASE, /* local (CPU) APIC) -- required for SMP or not */ -#endif -#ifdef CONFIG_X86_IO_APIC - FIX_IO_APIC_BASE_0, - FIX_IO_APIC_BASE_END = FIX_IO_APIC_BASE_0 + MAX_IO_APICS - 1, -#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 - FIX_TEXT_POKE1, /* reserve 2 pages for text_poke() */ - FIX_TEXT_POKE0, /* first page is last, because allocation is backward */ -#ifdef CONFIG_X86_INTEL_MID - FIX_LNW_VRTC, -#endif - __end_of_permanent_fixed_addresses, - - /* - * 256 temporary boot-time mappings, used by early_ioremap(), - * before ioremap() is functional. - * - * If necessary we round it up to the next 256 pages boundary so - * that we can have a single pgd entry and a single pte table: - */ -#define NR_FIX_BTMAPS 64 -#define FIX_BTMAPS_SLOTS 4 -#define TOTAL_FIX_BTMAPS (NR_FIX_BTMAPS * FIX_BTMAPS_SLOTS) - FIX_BTMAP_END = - (__end_of_permanent_fixed_addresses ^ - (__end_of_permanent_fixed_addresses + TOTAL_FIX_BTMAPS - 1)) & - -PTRS_PER_PTE - ? __end_of_permanent_fixed_addresses + TOTAL_FIX_BTMAPS - - (__end_of_permanent_fixed_addresses & (TOTAL_FIX_BTMAPS - 1)) - : __end_of_permanent_fixed_addresses, - FIX_BTMAP_BEGIN = FIX_BTMAP_END + TOTAL_FIX_BTMAPS - 1, -#ifdef CONFIG_X86_32 - FIX_WP_TEST, -#endif -#ifdef CONFIG_INTEL_TXT - FIX_TBOOT_BASE, -#endif - __end_of_fixed_addresses -}; - - -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) - -extern int fixmaps_set; - -extern pte_t *kmap_pte; -extern pgprot_t kmap_prot; -extern pte_t *pkmap_page_table; - -void __native_set_fixmap(enum fixed_addresses idx, pte_t pte); -void native_set_fixmap(enum fixed_addresses idx, - phys_addr_t phys, pgprot_t flags); - -#ifndef CONFIG_PARAVIRT -static inline void __set_fixmap(enum fixed_addresses idx, - phys_addr_t phys, pgprot_t flags) -{ - native_set_fixmap(idx, phys, flags); -} -#endif - -#define set_fixmap(idx, phys) \ - __set_fixmap(idx, phys, PAGE_KERNEL) - -/* - * Some hardware wants to get fixmapped without caching. - */ -#define set_fixmap_nocache(idx, phys) \ - __set_fixmap(idx, phys, PAGE_KERNEL_NOCACHE) - -#define clear_fixmap(idx) \ - __set_fixmap(idx, 0, __pgprot(0)) - -#define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT)) -#define __virt_to_fix(x) ((FIXADDR_TOP - ((x)&PAGE_MASK)) >> PAGE_SHIFT) - -extern void __this_fixmap_does_not_exist(void); - -/* - * 'index to address' translation. If anyone tries to use the idx - * directly without translation, we catch the bug with a NULL-deference - * kernel oops. Illegal ranges of incoming indices are caught too. - */ -static __always_inline unsigned long fix_to_virt(const unsigned int idx) -{ - /* - * this branch gets completely eliminated after inlining, - * except when someone tries to use fixaddr indices in an - * illegal way. (such as mixing up address types or using - * out-of-range indices). - * - * If it doesn't get removed, the linker will complain - * loudly with a reasonably clear error message.. - */ - if (idx >= __end_of_fixed_addresses) - __this_fixmap_does_not_exist(); - - return __fix_to_virt(idx); -} - -static inline unsigned long virt_to_fix(const unsigned long vaddr) -{ - BUG_ON(vaddr >= FIXADDR_TOP || vaddr < FIXADDR_START); - return __virt_to_fix(vaddr); -} - -/* Return an pointer with offset calculated */ -static __always_inline unsigned long -__set_fixmap_offset(enum fixed_addresses idx, phys_addr_t phys, pgprot_t flags) -{ - __set_fixmap(idx, phys, flags); - return fix_to_virt(idx) + (phys & (PAGE_SIZE - 1)); -} - -#define set_fixmap_offset(idx, phys) \ - __set_fixmap_offset(idx, phys, PAGE_KERNEL) - -#define set_fixmap_offset_nocache(idx, phys) \ - __set_fixmap_offset(idx, phys, PAGE_KERNEL_NOCACHE) - -#endif /* !__ASSEMBLY__ */ -#endif /* _ASM_X86_FIXMAP_H */ |