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diff --git a/include/asm-x86/mtrr_64.h b/include/asm-x86/mtrr_64.h
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1/* Generic MTRR (Memory Type Range Register) ioctls.
2
3 Copyright (C) 1997-1999 Richard Gooch
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public
7 License as published by the Free Software Foundation; either
8 version 2 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
14
15 You should have received a copy of the GNU Library General Public
16 License along with this library; if not, write to the Free
17 Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18
19 Richard Gooch may be reached by email at rgooch@atnf.csiro.au
20 The postal address is:
21 Richard Gooch, c/o ATNF, P. O. Box 76, Epping, N.S.W., 2121, Australia.
22*/
23#ifndef _LINUX_MTRR_H
24#define _LINUX_MTRR_H
25
26#include <linux/ioctl.h>
27
28#define MTRR_IOCTL_BASE 'M'
29
30struct mtrr_sentry
31{
32 unsigned long base; /* Base address */
33 unsigned int size; /* Size of region */
34 unsigned int type; /* Type of region */
35};
36
37/* Warning: this structure has a different order from i386
38 on x86-64. The 32bit emulation code takes care of that.
39 But you need to use this for 64bit, otherwise your X server
40 will break. */
41struct mtrr_gentry
42{
43 unsigned long base; /* Base address */
44 unsigned int size; /* Size of region */
45 unsigned int regnum; /* Register number */
46 unsigned int type; /* Type of region */
47};
48
49/* These are the various ioctls */
50#define MTRRIOC_ADD_ENTRY _IOW(MTRR_IOCTL_BASE, 0, struct mtrr_sentry)
51#define MTRRIOC_SET_ENTRY _IOW(MTRR_IOCTL_BASE, 1, struct mtrr_sentry)
52#define MTRRIOC_DEL_ENTRY _IOW(MTRR_IOCTL_BASE, 2, struct mtrr_sentry)
53#define MTRRIOC_GET_ENTRY _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry)
54#define MTRRIOC_KILL_ENTRY _IOW(MTRR_IOCTL_BASE, 4, struct mtrr_sentry)
55#define MTRRIOC_ADD_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 5, struct mtrr_sentry)
56#define MTRRIOC_SET_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 6, struct mtrr_sentry)
57#define MTRRIOC_DEL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 7, struct mtrr_sentry)
58#define MTRRIOC_GET_PAGE_ENTRY _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry)
59#define MTRRIOC_KILL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 9, struct mtrr_sentry)
60
61/* These are the region types */
62#define MTRR_TYPE_UNCACHABLE 0
63#define MTRR_TYPE_WRCOMB 1
64/*#define MTRR_TYPE_ 2*/
65/*#define MTRR_TYPE_ 3*/
66#define MTRR_TYPE_WRTHROUGH 4
67#define MTRR_TYPE_WRPROT 5
68#define MTRR_TYPE_WRBACK 6
69#define MTRR_NUM_TYPES 7
70
71#ifdef __KERNEL__
72
73/* The following functions are for use by other drivers */
74# ifdef CONFIG_MTRR
75extern int mtrr_add (unsigned long base, unsigned long size,
76 unsigned int type, char increment);
77extern int mtrr_add_page (unsigned long base, unsigned long size,
78 unsigned int type, char increment);
79extern int mtrr_del (int reg, unsigned long base, unsigned long size);
80extern int mtrr_del_page (int reg, unsigned long base, unsigned long size);
81# else
82static __inline__ int mtrr_add (unsigned long base, unsigned long size,
83 unsigned int type, char increment)
84{
85 return -ENODEV;
86}
87static __inline__ int mtrr_add_page (unsigned long base, unsigned long size,
88 unsigned int type, char increment)
89{
90 return -ENODEV;
91}
92static __inline__ int mtrr_del (int reg, unsigned long base,
93 unsigned long size)
94{
95 return -ENODEV;
96}
97static __inline__ int mtrr_del_page (int reg, unsigned long base,
98 unsigned long size)
99{
100 return -ENODEV;
101}
102
103#endif /* CONFIG_MTRR */
104
105#ifdef CONFIG_COMPAT
106#include <linux/compat.h>
107
108struct mtrr_sentry32
109{
110 compat_ulong_t base; /* Base address */
111 compat_uint_t size; /* Size of region */
112 compat_uint_t type; /* Type of region */
113};
114
115struct mtrr_gentry32
116{
117 compat_ulong_t regnum; /* Register number */
118 compat_uint_t base; /* Base address */
119 compat_uint_t size; /* Size of region */
120 compat_uint_t type; /* Type of region */
121};
122
123#define MTRR_IOCTL_BASE 'M'
124
125#define MTRRIOC32_ADD_ENTRY _IOW(MTRR_IOCTL_BASE, 0, struct mtrr_sentry32)
126#define MTRRIOC32_SET_ENTRY _IOW(MTRR_IOCTL_BASE, 1, struct mtrr_sentry32)
127#define MTRRIOC32_DEL_ENTRY _IOW(MTRR_IOCTL_BASE, 2, struct mtrr_sentry32)
128#define MTRRIOC32_GET_ENTRY _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry32)
129#define MTRRIOC32_KILL_ENTRY _IOW(MTRR_IOCTL_BASE, 4, struct mtrr_sentry32)
130#define MTRRIOC32_ADD_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 5, struct mtrr_sentry32)
131#define MTRRIOC32_SET_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 6, struct mtrr_sentry32)
132#define MTRRIOC32_DEL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 7, struct mtrr_sentry32)
133#define MTRRIOC32_GET_PAGE_ENTRY _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry32)
134#define MTRRIOC32_KILL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 9, struct mtrr_sentry32)
135
136#endif /* CONFIG_COMPAT */
137
138#ifdef CONFIG_MTRR
139extern void mtrr_ap_init(void);
140extern void mtrr_bp_init(void);
141extern void mtrr_save_fixed_ranges(void *);
142extern void mtrr_save_state(void);
143#else
144#define mtrr_ap_init() do {} while (0)
145#define mtrr_bp_init() do {} while (0)
146#define mtrr_save_fixed_ranges(arg) do {} while (0)
147#define mtrr_save_state() do {} while (0)
148#endif
149
150#endif /* __KERNEL__ */
151
152#endif /* _LINUX_MTRR_H */
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