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-rw-r--r--include/asm-x86/mtrr_32.h115
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diff --git a/include/asm-x86/mtrr_32.h b/include/asm-x86/mtrr_32.h
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--- a/include/asm-x86/mtrr_32.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#include <linux/errno.h>
28
29#define MTRR_IOCTL_BASE 'M'
30
31struct mtrr_sentry
32{
33 unsigned long base; /* Base address */
34 unsigned int size; /* Size of region */
35 unsigned int type; /* Type of region */
36};
37
38struct mtrr_gentry
39{
40 unsigned int regnum; /* Register number */
41 unsigned long base; /* Base address */
42 unsigned int size; /* Size of region */
43 unsigned int type; /* Type of region */
44};
45
46/* These are the various ioctls */
47#define MTRRIOC_ADD_ENTRY _IOW(MTRR_IOCTL_BASE, 0, struct mtrr_sentry)
48#define MTRRIOC_SET_ENTRY _IOW(MTRR_IOCTL_BASE, 1, struct mtrr_sentry)
49#define MTRRIOC_DEL_ENTRY _IOW(MTRR_IOCTL_BASE, 2, struct mtrr_sentry)
50#define MTRRIOC_GET_ENTRY _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry)
51#define MTRRIOC_KILL_ENTRY _IOW(MTRR_IOCTL_BASE, 4, struct mtrr_sentry)
52#define MTRRIOC_ADD_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 5, struct mtrr_sentry)
53#define MTRRIOC_SET_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 6, struct mtrr_sentry)
54#define MTRRIOC_DEL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 7, struct mtrr_sentry)
55#define MTRRIOC_GET_PAGE_ENTRY _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry)
56#define MTRRIOC_KILL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 9, struct mtrr_sentry)
57
58/* These are the region types */
59#define MTRR_TYPE_UNCACHABLE 0
60#define MTRR_TYPE_WRCOMB 1
61/*#define MTRR_TYPE_ 2*/
62/*#define MTRR_TYPE_ 3*/
63#define MTRR_TYPE_WRTHROUGH 4
64#define MTRR_TYPE_WRPROT 5
65#define MTRR_TYPE_WRBACK 6
66#define MTRR_NUM_TYPES 7
67
68#ifdef __KERNEL__
69
70/* The following functions are for use by other drivers */
71# ifdef CONFIG_MTRR
72extern void mtrr_save_fixed_ranges(void *);
73extern void mtrr_save_state(void);
74extern int mtrr_add (unsigned long base, unsigned long size,
75 unsigned int type, char increment);
76extern int mtrr_add_page (unsigned long base, unsigned long size,
77 unsigned int type, char increment);
78extern int mtrr_del (int reg, unsigned long base, unsigned long size);
79extern int mtrr_del_page (int reg, unsigned long base, unsigned long size);
80extern void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi);
81extern void mtrr_ap_init(void);
82extern void mtrr_bp_init(void);
83# else
84#define mtrr_save_fixed_ranges(arg) do {} while (0)
85#define mtrr_save_state() do {} while (0)
86static __inline__ int mtrr_add (unsigned long base, unsigned long size,
87 unsigned int type, char increment)
88{
89 return -ENODEV;
90}
91static __inline__ int mtrr_add_page (unsigned long base, unsigned long size,
92 unsigned int type, char increment)
93{
94 return -ENODEV;
95}
96static __inline__ int mtrr_del (int reg, unsigned long base,
97 unsigned long size)
98{
99 return -ENODEV;
100}
101static __inline__ int mtrr_del_page (int reg, unsigned long base,
102 unsigned long size)
103{
104 return -ENODEV;
105}
106
107static __inline__ void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi) {;}
108
109#define mtrr_ap_init() do {} while (0)
110#define mtrr_bp_init() do {} while (0)
111# endif
112
113#endif
114
115#endif /* _LINUX_MTRR_H */