X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-x86%2Fmtrr.h;h=a69a01a517292ffe4d902fd157e9adb201705a11;hb=1beee8dc8cf58e3f605bd7b34d7a39939be7d8d2;hp=34f633b3e00ced682dad40a95a3d6e04bb1fafb3;hpb=f26e51f67ae6a75ffc57b96cf5fe096f75e778cb;p=linux-2.6 diff --git a/include/asm-x86/mtrr.h b/include/asm-x86/mtrr.h index 34f633b3e0..a69a01a517 100644 --- a/include/asm-x86/mtrr.h +++ b/include/asm-x86/mtrr.h @@ -1,13 +1,173 @@ +/* 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 +#include + +#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__ */ + +/* 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__ -# ifdef CONFIG_X86_32 -# include "mtrr_32.h" -# else -# include "mtrr_64.h" -# endif -#else -# ifdef __i386__ -# include "mtrr_32.h" -# else -# include "mtrr_64.h" -# endif -#endif + +/* The following functions are for use by other drivers */ +# ifdef CONFIG_MTRR +extern u8 mtrr_type_lookup(u64 addr, u64 end); +extern void mtrr_save_fixed_ranges(void *); +extern void mtrr_save_state(void); +extern int mtrr_add(unsigned long base, unsigned long size, + unsigned int type, bool increment); +extern int mtrr_add_page(unsigned long base, unsigned long size, + unsigned int type, bool 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); +extern void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi); +extern void mtrr_ap_init(void); +extern void mtrr_bp_init(void); +extern int mtrr_trim_uncached_memory(unsigned long end_pfn); +extern int amd_special_default_mtrr(void); +# else +static inline u8 mtrr_type_lookup(u64 addr, u64 end) +{ + /* + * Return no-MTRRs: + */ + return 0xff; +} +#define mtrr_save_fixed_ranges(arg) do {} while (0) +#define mtrr_save_state() do {} while (0) +static inline int mtrr_add(unsigned long base, unsigned long size, + unsigned int type, bool increment) +{ + return -ENODEV; +} +static inline int mtrr_add_page(unsigned long base, unsigned long size, + unsigned int type, bool 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; +} +static inline int mtrr_trim_uncached_memory(unsigned long end_pfn) +{ + return 0; +} +static inline void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi) +{ +} + +#define mtrr_ap_init() do {} while (0) +#define mtrr_bp_init() do {} while (0) +# endif + +#ifdef CONFIG_COMPAT +#include + +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 /* __KERNEL__ */ + +#endif /* _ASM_X86_MTRR_H */