Subversion Repositories shark

Rev

Details | Last modification | View Log | RSS feed

Rev Author Line No. Line
422 giacomo 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/config.h>
27 
#include <linux/ioctl.h>
28 
 
29 
#define MTRR_IOCTL_BASE 'M'
30 
 
31 
struct 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 
 
38 
struct 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 
extern char *mtrr_strings[];
71 
 
72 
/*  The following functions are for use by other drivers  */
73 
# ifdef CONFIG_MTRR
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 
#  else
82 
static __inline__ int mtrr_add (unsigned long base, unsigned long size,
83 
                                unsigned int type, char increment)
84 
{
85 
    return -ENODEV;
86 
}
87 
static __inline__ int mtrr_add_page (unsigned long base, unsigned long size,
88 
                                unsigned int type, char increment)
89 
{
90 
    return -ENODEV;
91 
}
92 
static __inline__ int mtrr_del (int reg, unsigned long base,
93 
                                unsigned long size)
94 
{
95 
    return -ENODEV;
96 
}
97 
static __inline__ int mtrr_del_page (int reg, unsigned long base,
98 
                                unsigned long size)
99 
{
100 
    return -ENODEV;
101 
}
102 
 
103 
static __inline__ void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi) {;}
104 
 
105 
#  endif
106 
 
107 
#endif
108 
 
109 
#endif  /*  _LINUX_MTRR_H  */