projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * fixmap.h: compile-time virtual memory allocation | |
| 3 | * | |
| 4 | * This file is subject to the terms and conditions of the GNU General Public | |
| 5 | * License. See the file "COPYING" in the main directory of this archive | |
| 6 | * for more details. | |
| 7 | * | |
| 8 | * Copyright (C) 1998 Ingo Molnar | |
| 9 | */ | |
| 10 | ||
| 77ef50a5 VN |
11 | #ifndef ASM_X86__FIXMAP_64_H |
| 12 | #define ASM_X86__FIXMAP_64_H | |
| 1da177e4 | 13 | |
| 1da177e4 | 14 | #include <linux/kernel.h> |
| f34fa82b | 15 | #include <asm/acpi.h> |
| 1da177e4 LT |
16 | #include <asm/apicdef.h> |
| 17 | #include <asm/page.h> | |
| 18 | #include <asm/vsyscall.h> | |
| 5b83683f | 19 | #include <asm/efi.h> |
| 1da177e4 LT |
20 | |
| 21 | /* | |
| 22 | * Here we define all the compile-time 'special' virtual | |
| 23 | * addresses. The point is to have a constant address at | |
| 24 | * compile time, but to set the physical address only | |
| 25 | * in the boot process. | |
| 26 | * | |
| bdb345a4 JK |
27 | * These 'compile-time allocated' memory buffers are |
| 28 | * fixed-size 4k pages (or larger if used with an increment | |
| 29 | * higher than 1). Use set_fixmap(idx,phys) to associate | |
| 1da177e4 LT |
30 | * physical memory with fixmap indices. |
| 31 | * | |
| 32 | * TLB entries of such buffers will not be flushed across | |
| 33 | * task switches. | |
| 34 | */ | |
| 35 | ||
| 36 | enum fixed_addresses { | |
| 37 | VSYSCALL_LAST_PAGE, | |
| dca13fb0 JP |
38 | VSYSCALL_FIRST_PAGE = VSYSCALL_LAST_PAGE |
| 39 | + ((VSYSCALL_END-VSYSCALL_START) >> PAGE_SHIFT) - 1, | |
| 1da177e4 | 40 | VSYSCALL_HPET, |
| 18a8bd94 YL |
41 | FIX_DBGP_BASE, |
| 42 | FIX_EARLYCON_MEM_BASE, | |
| 1da177e4 | 43 | FIX_APIC_BASE, /* local (CPU) APIC) -- required for SMP or not */ |
| 1da177e4 | 44 | FIX_IO_APIC_BASE_0, |
| dca13fb0 | 45 | FIX_IO_APIC_BASE_END = FIX_IO_APIC_BASE_0 + MAX_IO_APICS - 1, |
| 5b83683f | 46 | FIX_EFI_IO_MAP_LAST_PAGE, |
| dca13fb0 JP |
47 | FIX_EFI_IO_MAP_FIRST_PAGE = FIX_EFI_IO_MAP_LAST_PAGE |
| 48 | + MAX_EFI_IO_PAGES - 1, | |
| 40801175 JF |
49 | #ifdef CONFIG_PARAVIRT |
| 50 | FIX_PARAVIRT_BOOTMAP, | |
| 51 | #endif | |
| f34fa82b YL |
52 | #ifdef CONFIG_ACPI |
| 53 | FIX_ACPI_BEGIN, | |
| 54 | FIX_ACPI_END = FIX_ACPI_BEGIN + FIX_ACPI_PAGES - 1, | |
| 55 | #endif | |
| f212ec4b BK |
56 | #ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT |
| 57 | FIX_OHCI1394_BASE, | |
| 58 | #endif | |
| 4583ed51 JF |
59 | __end_of_permanent_fixed_addresses, |
| 60 | /* | |
| 61 | * 256 temporary boot-time mappings, used by early_ioremap(), | |
| 62 | * before ioremap() is functional. | |
| 63 | * | |
| 64 | * We round it up to the next 512 pages boundary so that we | |
| 65 | * can have a single pgd entry and a single pte table: | |
| 66 | */ | |
| 67 | #define NR_FIX_BTMAPS 64 | |
| 68 | #define FIX_BTMAPS_NESTING 4 | |
| 69 | FIX_BTMAP_END = __end_of_permanent_fixed_addresses + 512 - | |
| 70 | (__end_of_permanent_fixed_addresses & 511), | |
| 71 | FIX_BTMAP_BEGIN = FIX_BTMAP_END + NR_FIX_BTMAPS*FIX_BTMAPS_NESTING - 1, | |
| 1da177e4 LT |
72 | __end_of_fixed_addresses |
| 73 | }; | |
| 74 | ||
| 1da177e4 LT |
75 | #define FIXADDR_TOP (VSYSCALL_END-PAGE_SIZE) |
| 76 | #define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT) | |
| 77 | #define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE) | |
| 78 | ||
| 79 | /* Only covers 32bit vsyscalls currently. Need another set for 64bit. */ | |
| 80 | #define FIXADDR_USER_START ((unsigned long)VSYSCALL32_VSYSCALL) | |
| 81 | #define FIXADDR_USER_END (FIXADDR_USER_START + PAGE_SIZE) | |
| 82 | ||
| 77ef50a5 | 83 | #endif /* ASM_X86__FIXMAP_64_H */ |