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24#ifndef _UAPI_ASM_X86_MTRR_H
25#define _UAPI_ASM_X86_MTRR_H
26
27#include <linux/types.h>
28#include <linux/ioctl.h>
29#include <linux/errno.h>
30
31#define MTRR_IOCTL_BASE 'M'
32
33
34
35
36
37
38#ifdef __i386__
39struct mtrr_sentry {
40 unsigned long base;
41 unsigned int size;
42 unsigned int type;
43};
44
45struct mtrr_gentry {
46 unsigned int regnum;
47 unsigned long base;
48 unsigned int size;
49 unsigned int type;
50};
51
52#else
53
54struct mtrr_sentry {
55 __u64 base;
56 __u32 size;
57 __u32 type;
58};
59
60struct mtrr_gentry {
61 __u64 base;
62 __u32 size;
63 __u32 regnum;
64 __u32 type;
65 __u32 _pad;
66};
67
68#endif
69
70struct mtrr_var_range {
71 __u32 base_lo;
72 __u32 base_hi;
73 __u32 mask_lo;
74 __u32 mask_hi;
75};
76
77
78
79typedef __u8 mtrr_type;
80
81#define MTRR_NUM_FIXED_RANGES 88
82#define MTRR_MAX_VAR_RANGES 256
83
84struct mtrr_state_type {
85 struct mtrr_var_range var_ranges[MTRR_MAX_VAR_RANGES];
86 mtrr_type fixed_ranges[MTRR_NUM_FIXED_RANGES];
87 unsigned char enabled;
88 unsigned char have_fixed;
89 mtrr_type def_type;
90};
91
92#define MTRRphysBase_MSR(reg) (0x200 + 2 * (reg))
93#define MTRRphysMask_MSR(reg) (0x200 + 2 * (reg) + 1)
94
95
96#define MTRRIOC_ADD_ENTRY _IOW(MTRR_IOCTL_BASE, 0, struct mtrr_sentry)
97#define MTRRIOC_SET_ENTRY _IOW(MTRR_IOCTL_BASE, 1, struct mtrr_sentry)
98#define MTRRIOC_DEL_ENTRY _IOW(MTRR_IOCTL_BASE, 2, struct mtrr_sentry)
99#define MTRRIOC_GET_ENTRY _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry)
100#define MTRRIOC_KILL_ENTRY _IOW(MTRR_IOCTL_BASE, 4, struct mtrr_sentry)
101#define MTRRIOC_ADD_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 5, struct mtrr_sentry)
102#define MTRRIOC_SET_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 6, struct mtrr_sentry)
103#define MTRRIOC_DEL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 7, struct mtrr_sentry)
104#define MTRRIOC_GET_PAGE_ENTRY _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry)
105#define MTRRIOC_KILL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 9, struct mtrr_sentry)
106
107
108#define MTRR_TYPE_UNCACHABLE 0
109#define MTRR_TYPE_WRCOMB 1
110
111
112#define MTRR_TYPE_WRTHROUGH 4
113#define MTRR_TYPE_WRPROT 5
114#define MTRR_TYPE_WRBACK 6
115#define MTRR_NUM_TYPES 7
116
117
118
119
120
121
122#define MTRR_TYPE_INVALID 0xff
123
124#endif
125