Rev 422 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
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| 422 | giacomo | 1 | /* Generic MTRR (Memory Type Range Register) ioctls. |
| 2 | |||
| 3 | Copyright (C) 1997-1999 Richard Gooch |
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| 4 | |||
| 5 | This library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Library General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2 of the License, or (at your option) any later version. |
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| 9 | |||
| 10 | This library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Library General Public License for more details. |
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| 14 | |||
| 15 | You should have received a copy of the GNU Library General Public |
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| 16 | License along with this library; if not, write to the Free |
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| 17 | Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 18 | |||
| 19 | Richard Gooch may be reached by email at rgooch@atnf.csiro.au |
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| 20 | The postal address is: |
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| 21 | Richard Gooch, c/o ATNF, P. O. Box 76, Epping, N.S.W., 2121, Australia. |
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| 22 | */ |
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| 23 | #ifndef _LINUX_MTRR_H |
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| 24 | #define _LINUX_MTRR_H |
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| 25 | |||
| 26 | #include <linux/config.h> |
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| 27 | #include <linux/ioctl.h> |
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| 28 | |||
| 29 | #define MTRR_IOCTL_BASE 'M' |
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| 30 | |||
| 31 | struct mtrr_sentry |
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| 32 | { |
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| 33 | unsigned long base; /* Base address */ |
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| 34 | unsigned int size; /* Size of region */ |
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| 35 | unsigned int type; /* Type of region */ |
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| 36 | }; |
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| 37 | |||
| 38 | struct mtrr_gentry |
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| 39 | { |
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| 40 | unsigned int regnum; /* Register number */ |
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| 41 | unsigned long base; /* Base address */ |
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| 42 | unsigned int size; /* Size of region */ |
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| 43 | unsigned int type; /* Type of region */ |
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| 44 | }; |
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| 45 | |||
| 46 | /* These are the various ioctls */ |
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| 47 | #define MTRRIOC_ADD_ENTRY _IOW(MTRR_IOCTL_BASE, 0, struct mtrr_sentry) |
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| 48 | #define MTRRIOC_SET_ENTRY _IOW(MTRR_IOCTL_BASE, 1, struct mtrr_sentry) |
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| 49 | #define MTRRIOC_DEL_ENTRY _IOW(MTRR_IOCTL_BASE, 2, struct mtrr_sentry) |
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| 50 | #define MTRRIOC_GET_ENTRY _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry) |
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| 51 | #define MTRRIOC_KILL_ENTRY _IOW(MTRR_IOCTL_BASE, 4, struct mtrr_sentry) |
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| 52 | #define MTRRIOC_ADD_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 5, struct mtrr_sentry) |
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| 53 | #define MTRRIOC_SET_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 6, struct mtrr_sentry) |
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| 54 | #define MTRRIOC_DEL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 7, struct mtrr_sentry) |
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| 55 | #define MTRRIOC_GET_PAGE_ENTRY _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry) |
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| 56 | #define MTRRIOC_KILL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 9, struct mtrr_sentry) |
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| 57 | |||
| 58 | /* These are the region types */ |
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| 59 | #define MTRR_TYPE_UNCACHABLE 0 |
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| 60 | #define MTRR_TYPE_WRCOMB 1 |
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| 61 | /*#define MTRR_TYPE_ 2*/ |
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| 62 | /*#define MTRR_TYPE_ 3*/ |
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| 63 | #define MTRR_TYPE_WRTHROUGH 4 |
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| 64 | #define MTRR_TYPE_WRPROT 5 |
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| 65 | #define MTRR_TYPE_WRBACK 6 |
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| 66 | #define MTRR_NUM_TYPES 7 |
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| 67 | |||
| 68 | #ifdef __KERNEL__ |
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| 69 | |||
| 70 | extern char *mtrr_strings[]; |
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| 71 | |||
| 72 | /* The following functions are for use by other drivers */ |
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| 73 | # ifdef CONFIG_MTRR |
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| 74 | extern int mtrr_add (unsigned long base, unsigned long size, |
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| 75 | unsigned int type, char increment); |
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| 76 | extern int mtrr_add_page (unsigned long base, unsigned long size, |
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| 77 | unsigned int type, char increment); |
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| 78 | extern int mtrr_del (int reg, unsigned long base, unsigned long size); |
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| 79 | extern int mtrr_del_page (int reg, unsigned long base, unsigned long size); |
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| 80 | extern void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi); |
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| 81 | # else |
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| 82 | static __inline__ int mtrr_add (unsigned long base, unsigned long size, |
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| 83 | unsigned int type, char increment) |
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| 84 | { |
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| 85 | return -ENODEV; |
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| 86 | } |
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| 87 | static __inline__ int mtrr_add_page (unsigned long base, unsigned long size, |
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| 88 | unsigned int type, char increment) |
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| 89 | { |
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| 90 | return -ENODEV; |
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| 91 | } |
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| 92 | static __inline__ int mtrr_del (int reg, unsigned long base, |
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| 93 | unsigned long size) |
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| 94 | { |
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| 95 | return -ENODEV; |
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| 96 | } |
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| 97 | static __inline__ int mtrr_del_page (int reg, unsigned long base, |
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| 98 | unsigned long size) |
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| 99 | { |
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| 100 | return -ENODEV; |
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| 101 | } |
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| 102 | |||
| 103 | static __inline__ void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi) {;} |
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| 104 | |||
| 105 | # endif |
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| 106 | |||
| 107 | #endif |
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| 108 | |||
| 109 | #endif /* _LINUX_MTRR_H */ |