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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 | /* Generic MTRR (Memory Type Range Register) ioctls. Copyright (C) 1997-1999 Richard Gooch This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. Richard Gooch may be reached by email at rgooch@atnf.csiro.au The postal address is: Richard Gooch, c/o ATNF, P. O. Box 76, Epping, N.S.W., 2121, Australia. */ #ifndef _ASM_X86_MTRR_H #define _ASM_X86_MTRR_H #include <uapi/asm/mtrr.h> #include <asm/pat.h> /* * The following functions are for use by other drivers that cannot use * arch_phys_wc_add and arch_phys_wc_del. */ # ifdef CONFIG_MTRR extern u8 mtrr_type_lookup(u64 addr, u64 end, u8 *uniform); extern void mtrr_save_fixed_ranges(void *); extern void mtrr_save_state(void); extern int mtrr_add(unsigned long base, unsigned long size, unsigned int type, bool increment); extern int mtrr_add_page(unsigned long base, unsigned long size, unsigned int type, bool increment); extern int mtrr_del(int reg, unsigned long base, unsigned long size); extern int mtrr_del_page(int reg, unsigned long base, unsigned long size); extern void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi); extern void mtrr_ap_init(void); extern void mtrr_bp_init(void); extern void set_mtrr_aps_delayed_init(void); extern void mtrr_aps_init(void); extern void mtrr_bp_restore(void); extern int mtrr_trim_uncached_memory(unsigned long end_pfn); extern int amd_special_default_mtrr(void); # else static inline u8 mtrr_type_lookup(u64 addr, u64 end, u8 *uniform) { /* * Return no-MTRRs: */ return MTRR_TYPE_INVALID; } #define mtrr_save_fixed_ranges(arg) do {} while (0) #define mtrr_save_state() do {} while (0) static inline int mtrr_add(unsigned long base, unsigned long size, unsigned int type, bool increment) { return -ENODEV; } static inline int mtrr_add_page(unsigned long base, unsigned long size, unsigned int type, bool increment) { return -ENODEV; } static inline int mtrr_del(int reg, unsigned long base, unsigned long size) { return -ENODEV; } static inline int mtrr_del_page(int reg, unsigned long base, unsigned long size) { return -ENODEV; } static inline int mtrr_trim_uncached_memory(unsigned long end_pfn) { return 0; } static inline void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi) { } static inline void mtrr_bp_init(void) { pat_disable("MTRRs disabled, skipping PAT initialization too."); } #define mtrr_ap_init() do {} while (0) #define set_mtrr_aps_delayed_init() do {} while (0) #define mtrr_aps_init() do {} while (0) #define mtrr_bp_restore() do {} while (0) # endif #ifdef CONFIG_COMPAT #include <linux/compat.h> struct mtrr_sentry32 { compat_ulong_t base; /* Base address */ compat_uint_t size; /* Size of region */ compat_uint_t type; /* Type of region */ }; struct mtrr_gentry32 { compat_ulong_t regnum; /* Register number */ compat_uint_t base; /* Base address */ compat_uint_t size; /* Size of region */ compat_uint_t type; /* Type of region */ }; #define MTRR_IOCTL_BASE 'M' #define MTRRIOC32_ADD_ENTRY _IOW(MTRR_IOCTL_BASE, 0, struct mtrr_sentry32) #define MTRRIOC32_SET_ENTRY _IOW(MTRR_IOCTL_BASE, 1, struct mtrr_sentry32) #define MTRRIOC32_DEL_ENTRY _IOW(MTRR_IOCTL_BASE, 2, struct mtrr_sentry32) #define MTRRIOC32_GET_ENTRY _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry32) #define MTRRIOC32_KILL_ENTRY _IOW(MTRR_IOCTL_BASE, 4, struct mtrr_sentry32) #define MTRRIOC32_ADD_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 5, struct mtrr_sentry32) #define MTRRIOC32_SET_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 6, struct mtrr_sentry32) #define MTRRIOC32_DEL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 7, struct mtrr_sentry32) #define MTRRIOC32_GET_PAGE_ENTRY _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry32) #define MTRRIOC32_KILL_PAGE_ENTRY \ _IOW(MTRR_IOCTL_BASE, 9, struct mtrr_sentry32) #endif /* CONFIG_COMPAT */ /* Bit fields for enabled in struct mtrr_state_type */ #define MTRR_STATE_MTRR_FIXED_ENABLED 0x01 #define MTRR_STATE_MTRR_ENABLED 0x02 #endif /* _ASM_X86_MTRR_H */ |