[deliverable/linux.git] / include / asm-i386 / mtrr.h

/*  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/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   */
};

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   */
};

/*  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 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, 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);
extern void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi);
extern void mtrr_ap_init(void);
extern void mtrr_bp_init(void);
#  else
#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, 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;
}

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

#endif

#endif  /*  _LINUX_MTRR_H  */
Commit	Line	Data
1da177e4 LT	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
1da177e4	26	#include <linux/ioctl.h>
52f4a91a	27	#include <linux/errno.h>
1da177e4 LT	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	/* The following functions are for use by other drivers */
	71	# ifdef CONFIG_MTRR
2b3b4835	72	extern void mtrr_save_fixed_ranges(void *);
2b1f6278	73	extern void mtrr_save_state(void);
1da177e4 LT	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);
27b07da7 AD	81	extern void mtrr_ap_init(void);
27b07da7 AD	82	extern void mtrr_bp_init(void);
1da177e4	83	# else
2b3b4835	84	#define mtrr_save_fixed_ranges(arg) do {} while (0)
2b1f6278	85	#define mtrr_save_state() do {} while (0)
1da177e4 LT	86	static __inline__ int mtrr_add (unsigned long base, unsigned long size,
	87	unsigned int type, char increment)
	88	{
	89	return -ENODEV;
	90	}
	91	static __inline__ int mtrr_add_page (unsigned long base, unsigned long size,
	92	unsigned int type, char increment)
	93	{
	94	return -ENODEV;
	95	}
	96	static __inline__ int mtrr_del (int reg, unsigned long base,
	97	unsigned long size)
	98	{
	99	return -ENODEV;
	100	}
	101	static __inline__ int mtrr_del_page (int reg, unsigned long base,
	102	unsigned long size)
	103	{
	104	return -ENODEV;
	105	}
	106
	107	static __inline__ void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi) {;}
	108
27b07da7 AD	109	#define mtrr_ap_init() do {} while (0)
27b07da7 AD	110	#define mtrr_bp_init() do {} while (0)
1da177e4 LT	111	# endif
	112
	113	#endif
	114
	115	#endif /* _LINUX_MTRR_H */