fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-x86 / mtrr_64.h
blobb557c486bef81f6b7762468c8e0eb3faedbf7bff
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.
23 #ifndef _LINUX_MTRR_H
24 #define _LINUX_MTRR_H
26 #include <linux/ioctl.h>
28 #define MTRR_IOCTL_BASE 'M'
30 struct mtrr_sentry
32 unsigned long base; /* Base address */
33 unsigned int size; /* Size of region */
34 unsigned int type; /* Type of region */
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. */
41 struct mtrr_gentry
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 */
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)
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
71 #ifdef __KERNEL__
73 /* The following functions are for use by other drivers */
74 # ifdef CONFIG_MTRR
75 extern int mtrr_add (unsigned long base, unsigned long size,
76 unsigned int type, char increment);
77 extern int mtrr_add_page (unsigned long base, unsigned long size,
78 unsigned int type, char increment);
79 extern int mtrr_del (int reg, unsigned long base, unsigned long size);
80 extern int mtrr_del_page (int reg, unsigned long base, unsigned long size);
81 # else
82 static __inline__ int mtrr_add (unsigned long base, unsigned long size,
83 unsigned int type, char increment)
85 return -ENODEV;
87 static __inline__ int mtrr_add_page (unsigned long base, unsigned long size,
88 unsigned int type, char increment)
90 return -ENODEV;
92 static __inline__ int mtrr_del (int reg, unsigned long base,
93 unsigned long size)
95 return -ENODEV;
97 static __inline__ int mtrr_del_page (int reg, unsigned long base,
98 unsigned long size)
100 return -ENODEV;
103 #endif /* CONFIG_MTRR */
105 #ifdef CONFIG_COMPAT
106 #include <linux/compat.h>
108 struct mtrr_sentry32
110 compat_ulong_t base; /* Base address */
111 compat_uint_t size; /* Size of region */
112 compat_uint_t type; /* Type of region */
115 struct mtrr_gentry32
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 */
123 #define MTRR_IOCTL_BASE 'M'
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)
136 #endif /* CONFIG_COMPAT */
138 #ifdef CONFIG_MTRR
139 extern void mtrr_ap_init(void);
140 extern void mtrr_bp_init(void);
141 extern void mtrr_save_fixed_ranges(void *);
142 extern 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
150 #endif /* __KERNEL__ */
152 #endif /* _LINUX_MTRR_H */