1 /* Generic MTRR (Memory Type Range Register) ioctls.
3 Copyright (C) 1997-1999 Richard Gooch
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.
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.
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.
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.
26 #include <linux/config.h>
27 #include <linux/ioctl.h>
28 #include <linux/compat.h>
30 #define MTRR_IOCTL_BASE 'M'
34 unsigned long base; /* Base address */
35 unsigned int size; /* Size of region */
36 unsigned int type; /* Type of region */
39 /* Warning: this structure has a different order from i386
40 on x86-64. The 32bit emulation code takes care of that.
41 But you need to use this for 64bit, otherwise your X server
45 unsigned long base; /* Base address */
46 unsigned int size; /* Size of region */
47 unsigned int regnum; /* Register number */
48 unsigned int type; /* Type of region */
51 /* These are the various ioctls */
52 #define MTRRIOC_ADD_ENTRY _IOW(MTRR_IOCTL_BASE, 0, struct mtrr_sentry)
53 #define MTRRIOC_SET_ENTRY _IOW(MTRR_IOCTL_BASE, 1, struct mtrr_sentry)
54 #define MTRRIOC_DEL_ENTRY _IOW(MTRR_IOCTL_BASE, 2, struct mtrr_sentry)
55 #define MTRRIOC_GET_ENTRY _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry)
56 #define MTRRIOC_KILL_ENTRY _IOW(MTRR_IOCTL_BASE, 4, struct mtrr_sentry)
57 #define MTRRIOC_ADD_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 5, struct mtrr_sentry)
58 #define MTRRIOC_SET_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 6, struct mtrr_sentry)
59 #define MTRRIOC_DEL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 7, struct mtrr_sentry)
60 #define MTRRIOC_GET_PAGE_ENTRY _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry)
61 #define MTRRIOC_KILL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 9, struct mtrr_sentry)
63 /* These are the region types */
64 #define MTRR_TYPE_UNCACHABLE 0
65 #define MTRR_TYPE_WRCOMB 1
66 /*#define MTRR_TYPE_ 2*/
67 /*#define MTRR_TYPE_ 3*/
68 #define MTRR_TYPE_WRTHROUGH 4
69 #define MTRR_TYPE_WRPROT 5
70 #define MTRR_TYPE_WRBACK 6
71 #define MTRR_NUM_TYPES 7
75 /* The following functions are for use by other drivers */
77 extern int mtrr_add (unsigned long base, unsigned long size,
78 unsigned int type, char increment);
79 extern int mtrr_add_page (unsigned long base, unsigned long size,
80 unsigned int type, char increment);
81 extern int mtrr_del (int reg, unsigned long base, unsigned long size);
82 extern int mtrr_del_page (int reg, unsigned long base, unsigned long size);
84 static __inline__ int mtrr_add (unsigned long base, unsigned long size,
85 unsigned int type, char increment)
89 static __inline__ int mtrr_add_page (unsigned long base, unsigned long size,
90 unsigned int type, char increment)
94 static __inline__ int mtrr_del (int reg, unsigned long base,
99 static __inline__ int mtrr_del_page (int reg, unsigned long base,
113 compat_ulong_t base; /* Base address */
114 compat_uint_t size; /* Size of region */
115 compat_uint_t type; /* Type of region */
120 compat_ulong_t regnum; /* Register number */
121 compat_uint_t base; /* Base address */
122 compat_uint_t size; /* Size of region */
123 compat_uint_t type; /* Type of region */
126 #define MTRR_IOCTL_BASE 'M'
128 #define MTRRIOC32_ADD_ENTRY _IOW(MTRR_IOCTL_BASE, 0, struct mtrr_sentry32)
129 #define MTRRIOC32_SET_ENTRY _IOW(MTRR_IOCTL_BASE, 1, struct mtrr_sentry32)
130 #define MTRRIOC32_DEL_ENTRY _IOW(MTRR_IOCTL_BASE, 2, struct mtrr_sentry32)
131 #define MTRRIOC32_GET_ENTRY _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry32)
132 #define MTRRIOC32_KILL_ENTRY _IOW(MTRR_IOCTL_BASE, 4, struct mtrr_sentry32)
133 #define MTRRIOC32_ADD_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 5, struct mtrr_sentry32)
134 #define MTRRIOC32_SET_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 6, struct mtrr_sentry32)
135 #define MTRRIOC32_DEL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 7, struct mtrr_sentry32)
136 #define MTRRIOC32_GET_PAGE_ENTRY _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry32)
137 #define MTRRIOC32_KILL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 9, struct mtrr_sentry32)
139 #endif /* CONFIG_COMPAT */
141 #endif /* _LINUX_MTRR_H */