| /* Generic MTRR (Memory Type Range Register) ioctls. |
| |
| Copyright (C) 1997-1999 Richard Gooch |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Library General Public |
| License as published by the Free Software Foundation; either |
| version 2 of the License, or (at your option) any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public |
| License along with this library; if not, write to the Free |
| Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| |
| Richard Gooch may be reached by email at rgooch@atnf.csiro.au |
| The postal address is: |
| Richard Gooch, c/o ATNF, P. O. Box 76, Epping, N.S.W., 2121, Australia. |
| */ |
| #ifndef _ASM_X86_MTRR_H |
| #define _ASM_X86_MTRR_H |
| |
| #include <linux/types.h> |
| #include <linux/ioctl.h> |
| #include <linux/errno.h> |
| |
| #define MTRR_IOCTL_BASE 'M' |
| |
| struct mtrr_sentry { |
| unsigned long base; /* Base address */ |
| unsigned int size; /* Size of region */ |
| unsigned int type; /* Type of region */ |
| }; |
| |
| /* Warning: this structure has a different order from i386 |
| on x86-64. The 32bit emulation code takes care of that. |
| But you need to use this for 64bit, otherwise your X server |
| will break. */ |
| |
| #ifdef __i386__ |
| struct mtrr_gentry { |
| unsigned int regnum; /* Register number */ |
| unsigned long base; /* Base address */ |
| unsigned int size; /* Size of region */ |
| unsigned int type; /* Type of region */ |
| }; |
| |
| #else /* __i386__ */ |
| |
| struct mtrr_gentry { |
| unsigned long base; /* Base address */ |
| unsigned int size; /* Size of region */ |
| unsigned int regnum; /* Register number */ |
| unsigned int type; /* Type of region */ |
| }; |
| #endif /* !__i386__ */ |
| |
| struct mtrr_var_range { |
| __u32 base_lo; |
| __u32 base_hi; |
| __u32 mask_lo; |
| __u32 mask_hi; |
| }; |
| |
| /* In the Intel processor's MTRR interface, the MTRR type is always held in |
| an 8 bit field: */ |
| typedef __u8 mtrr_type; |
| |
| #define MTRR_NUM_FIXED_RANGES 88 |
| #define MTRR_MAX_VAR_RANGES 256 |
| |
| struct mtrr_state_type { |
| struct mtrr_var_range var_ranges[MTRR_MAX_VAR_RANGES]; |
| mtrr_type fixed_ranges[MTRR_NUM_FIXED_RANGES]; |
| unsigned char enabled; |
| unsigned char have_fixed; |
| mtrr_type def_type; |
| }; |
| |
| #define MTRRphysBase_MSR(reg) (0x200 + 2 * (reg)) |
| #define MTRRphysMask_MSR(reg) (0x200 + 2 * (reg) + 1) |
| |
| /* These are the various ioctls */ |
| #define MTRRIOC_ADD_ENTRY _IOW(MTRR_IOCTL_BASE, 0, struct mtrr_sentry) |
| #define MTRRIOC_SET_ENTRY _IOW(MTRR_IOCTL_BASE, 1, struct mtrr_sentry) |
| #define MTRRIOC_DEL_ENTRY _IOW(MTRR_IOCTL_BASE, 2, struct mtrr_sentry) |
| #define MTRRIOC_GET_ENTRY _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry) |
| #define MTRRIOC_KILL_ENTRY _IOW(MTRR_IOCTL_BASE, 4, struct mtrr_sentry) |
| #define MTRRIOC_ADD_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 5, struct mtrr_sentry) |
| #define MTRRIOC_SET_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 6, struct mtrr_sentry) |
| #define MTRRIOC_DEL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 7, struct mtrr_sentry) |
| #define MTRRIOC_GET_PAGE_ENTRY _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry) |
| #define MTRRIOC_KILL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 9, struct mtrr_sentry) |
| |
| /* These are the region types */ |
| #define MTRR_TYPE_UNCACHABLE 0 |
| #define MTRR_TYPE_WRCOMB 1 |
| /*#define MTRR_TYPE_ 2*/ |
| /*#define MTRR_TYPE_ 3*/ |
| #define MTRR_TYPE_WRTHROUGH 4 |
| #define MTRR_TYPE_WRPROT 5 |
| #define MTRR_TYPE_WRBACK 6 |
| #define MTRR_NUM_TYPES 7 |
| |
| |
| #endif /* _ASM_X86_MTRR_H */ |