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23#ifndef _ASM_X86_MTRR_H
24#define _ASM_X86_MTRR_H
25
26#include <uapi/asm/mtrr.h>
27
28
29
30
31
32
33# ifdef CONFIG_MTRR
34extern u8 mtrr_type_lookup(u64 addr, u64 end, u8 *uniform);
35extern void mtrr_save_fixed_ranges(void *);
36extern void mtrr_save_state(void);
37extern int mtrr_add(unsigned long base, unsigned long size,
38 unsigned int type, bool increment);
39extern int mtrr_add_page(unsigned long base, unsigned long size,
40 unsigned int type, bool increment);
41extern int mtrr_del(int reg, unsigned long base, unsigned long size);
42extern int mtrr_del_page(int reg, unsigned long base, unsigned long size);
43extern void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi);
44extern void mtrr_ap_init(void);
45extern void mtrr_bp_init(void);
46extern void set_mtrr_aps_delayed_init(void);
47extern void mtrr_aps_init(void);
48extern void mtrr_bp_restore(void);
49extern int mtrr_trim_uncached_memory(unsigned long end_pfn);
50extern int amd_special_default_mtrr(void);
51# else
52static inline u8 mtrr_type_lookup(u64 addr, u64 end, u8 *uniform)
53{
54
55
56
57 return MTRR_TYPE_INVALID;
58}
59#define mtrr_save_fixed_ranges(arg) do {} while (0)
60#define mtrr_save_state() do {} while (0)
61static inline int mtrr_add(unsigned long base, unsigned long size,
62 unsigned int type, bool increment)
63{
64 return -ENODEV;
65}
66static inline int mtrr_add_page(unsigned long base, unsigned long size,
67 unsigned int type, bool increment)
68{
69 return -ENODEV;
70}
71static inline int mtrr_del(int reg, unsigned long base, unsigned long size)
72{
73 return -ENODEV;
74}
75static inline int mtrr_del_page(int reg, unsigned long base, unsigned long size)
76{
77 return -ENODEV;
78}
79static inline int mtrr_trim_uncached_memory(unsigned long end_pfn)
80{
81 return 0;
82}
83static inline void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi)
84{
85}
86
87#define mtrr_ap_init() do {} while (0)
88#define mtrr_bp_init() do {} while (0)
89#define set_mtrr_aps_delayed_init() do {} while (0)
90#define mtrr_aps_init() do {} while (0)
91#define mtrr_bp_restore() do {} while (0)
92# endif
93
94#ifdef CONFIG_COMPAT
95#include <linux/compat.h>
96
97struct mtrr_sentry32 {
98 compat_ulong_t base;
99 compat_uint_t size;
100 compat_uint_t type;
101};
102
103struct mtrr_gentry32 {
104 compat_ulong_t regnum;
105 compat_uint_t base;
106 compat_uint_t size;
107 compat_uint_t type;
108};
109
110#define MTRR_IOCTL_BASE 'M'
111
112#define MTRRIOC32_ADD_ENTRY _IOW(MTRR_IOCTL_BASE, 0, struct mtrr_sentry32)
113#define MTRRIOC32_SET_ENTRY _IOW(MTRR_IOCTL_BASE, 1, struct mtrr_sentry32)
114#define MTRRIOC32_DEL_ENTRY _IOW(MTRR_IOCTL_BASE, 2, struct mtrr_sentry32)
115#define MTRRIOC32_GET_ENTRY _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry32)
116#define MTRRIOC32_KILL_ENTRY _IOW(MTRR_IOCTL_BASE, 4, struct mtrr_sentry32)
117#define MTRRIOC32_ADD_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 5, struct mtrr_sentry32)
118#define MTRRIOC32_SET_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 6, struct mtrr_sentry32)
119#define MTRRIOC32_DEL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 7, struct mtrr_sentry32)
120#define MTRRIOC32_GET_PAGE_ENTRY _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry32)
121#define MTRRIOC32_KILL_PAGE_ENTRY \
122 _IOW(MTRR_IOCTL_BASE, 9, struct mtrr_sentry32)
123#endif
124
125
126#define MTRR_STATE_MTRR_FIXED_ENABLED 0x01
127#define MTRR_STATE_MTRR_ENABLED 0x02
128
129#endif
130