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/* 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 _LINUX_MTRR_H #define _LINUX_MTRR_H #include <linux/config.h> #include <linux/ioctl.h> #include <linux/compat.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. */ 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 */ }; /* 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 #ifdef __KERNEL__ /* The following functions are for use by other drivers */ # ifdef CONFIG_MTRR extern int mtrr_add (unsigned long base, unsigned long size, unsigned int type, char increment); extern int mtrr_add_page (unsigned long base, unsigned long size, unsigned int type, char increment); extern int mtrr_del (int reg, unsigned long base, unsigned long size); extern int mtrr_del_page (int reg, unsigned long base, unsigned long size); # else static __inline__ int mtrr_add (unsigned long base, unsigned long size, unsigned int type, char increment) { return -ENODEV; } static __inline__ int mtrr_add_page (unsigned long base, unsigned long size, unsigned int type, char increment) { return -ENODEV; } static __inline__ int mtrr_del (int reg, unsigned long base, unsigned long size) { return -ENODEV; } static __inline__ int mtrr_del_page (int reg, unsigned long base, unsigned long size) { return -ENODEV; } # endif #endif #ifdef CONFIG_COMPAT struct mtrr_sentry32 { compat_ulong_t base; /* Base address */ compat_uint_t size; /* Size of region */ compat_uint_t type; /* Type of region */ }; struct mtrr_gentry32 { compat_ulong_t regnum; /* Register number */ compat_uint_t base; /* Base address */ compat_uint_t size; /* Size of region */ compat_uint_t type; /* Type of region */ }; #define MTRR_IOCTL_BASE 'M' #define MTRRIOC32_ADD_ENTRY _IOW(MTRR_IOCTL_BASE, 0, struct mtrr_sentry32) #define MTRRIOC32_SET_ENTRY _IOW(MTRR_IOCTL_BASE, 1, struct mtrr_sentry32) #define MTRRIOC32_DEL_ENTRY _IOW(MTRR_IOCTL_BASE, 2, struct mtrr_sentry32) #define MTRRIOC32_GET_ENTRY _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry32) #define MTRRIOC32_KILL_ENTRY _IOW(MTRR_IOCTL_BASE, 4, struct mtrr_sentry32) #define MTRRIOC32_ADD_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 5, struct mtrr_sentry32) #define MTRRIOC32_SET_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 6, struct mtrr_sentry32) #define MTRRIOC32_DEL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 7, struct mtrr_sentry32) #define MTRRIOC32_GET_PAGE_ENTRY _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry32) #define MTRRIOC32_KILL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 9, struct mtrr_sentry32) #endif /* CONFIG_COMPAT */ #endif /* _LINUX_MTRR_H */