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git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - include/asm-x86_64/mtrr.h
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>
29 #define MTRR_IOCTL_BASE 'M'
33 unsigned long base
; /* Base address */
34 unsigned int size
; /* Size of region */
35 unsigned int type
; /* Type of region */
38 /* Warning: this structure has a different order from i386
39 on x86-64. The 32bit emulation code takes care of that.
40 But you need to use this for 64bit, otherwise your X server
44 unsigned long base
; /* Base address */
45 unsigned int size
; /* Size of region */
46 unsigned int regnum
; /* Register number */
47 unsigned int type
; /* Type of region */
50 /* These are the various ioctls */
51 #define MTRRIOC_ADD_ENTRY _IOW(MTRR_IOCTL_BASE, 0, struct mtrr_sentry)
52 #define MTRRIOC_SET_ENTRY _IOW(MTRR_IOCTL_BASE, 1, struct mtrr_sentry)
53 #define MTRRIOC_DEL_ENTRY _IOW(MTRR_IOCTL_BASE, 2, struct mtrr_sentry)
54 #define MTRRIOC_GET_ENTRY _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry)
55 #define MTRRIOC_KILL_ENTRY _IOW(MTRR_IOCTL_BASE, 4, struct mtrr_sentry)
56 #define MTRRIOC_ADD_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 5, struct mtrr_sentry)
57 #define MTRRIOC_SET_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 6, struct mtrr_sentry)
58 #define MTRRIOC_DEL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 7, struct mtrr_sentry)
59 #define MTRRIOC_GET_PAGE_ENTRY _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry)
60 #define MTRRIOC_KILL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 9, struct mtrr_sentry)
62 /* These are the region types */
63 #define MTRR_TYPE_UNCACHABLE 0
64 #define MTRR_TYPE_WRCOMB 1
65 /*#define MTRR_TYPE_ 2*/
66 /*#define MTRR_TYPE_ 3*/
67 #define MTRR_TYPE_WRTHROUGH 4
68 #define MTRR_TYPE_WRPROT 5
69 #define MTRR_TYPE_WRBACK 6
70 #define MTRR_NUM_TYPES 7
74 /* The following functions are for use by other drivers */
76 extern int mtrr_add (unsigned long base
, unsigned long size
,
77 unsigned int type
, char increment
);
78 extern int mtrr_add_page (unsigned long base
, unsigned long size
,
79 unsigned int type
, char increment
);
80 extern int mtrr_del (int reg
, unsigned long base
, unsigned long size
);
81 extern int mtrr_del_page (int reg
, unsigned long base
, unsigned long size
);
83 static __inline__
int mtrr_add (unsigned long base
, unsigned long size
,
84 unsigned int type
, char increment
)
88 static __inline__
int mtrr_add_page (unsigned long base
, unsigned long size
,
89 unsigned int type
, char increment
)
93 static __inline__
int mtrr_del (int reg
, unsigned long base
,
98 static __inline__
int mtrr_del_page (int reg
, unsigned long base
,
108 #endif /* _LINUX_MTRR_H */