fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-x86 / mtrr_32.h
blob7e9c7ccbdcfe57784b62f3759091d735c253cd96
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>
27 #include <linux/errno.h>
29 #define MTRR_IOCTL_BASE 'M'
31 struct mtrr_sentry
33 unsigned long base; /* Base address */
34 unsigned int size; /* Size of region */
35 unsigned int type; /* Type of region */
38 struct mtrr_gentry
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 */
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)
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
68 #ifdef __KERNEL__
70 /* The following functions are for use by other drivers */
71 # ifdef CONFIG_MTRR
72 extern void mtrr_save_fixed_ranges(void *);
73 extern void mtrr_save_state(void);
74 extern int mtrr_add (unsigned long base, unsigned long size,
75 unsigned int type, char increment);
76 extern int mtrr_add_page (unsigned long base, unsigned long size,
77 unsigned int type, char increment);
78 extern int mtrr_del (int reg, unsigned long base, unsigned long size);
79 extern int mtrr_del_page (int reg, unsigned long base, unsigned long size);
80 extern void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi);
81 extern void mtrr_ap_init(void);
82 extern 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)
86 static __inline__ int mtrr_add (unsigned long base, unsigned long size,
87 unsigned int type, char increment)
89 return -ENODEV;
91 static __inline__ int mtrr_add_page (unsigned long base, unsigned long size,
92 unsigned int type, char increment)
94 return -ENODEV;
96 static __inline__ int mtrr_del (int reg, unsigned long base,
97 unsigned long size)
99 return -ENODEV;
101 static __inline__ int mtrr_del_page (int reg, unsigned long base,
102 unsigned long size)
104 return -ENODEV;
107 static __inline__ void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi) {;}
109 #define mtrr_ap_init() do {} while (0)
110 #define mtrr_bp_init() do {} while (0)
111 # endif
113 #endif
115 #endif /* _LINUX_MTRR_H */