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/* $OpenBSD: mtrr.h,v 1.1 2004/01/28 01:39:39 mickey Exp $ */
/* $NetBSD: mtrr.h,v 1.1 2003/02/26 21:26:11 fvdl Exp $ */
/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Bill Sommerfeld
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _X86_MTRR_H_
#define _X86_MTRR_H_
#define MTRR_I686_FIXED_IDX64K 0
#define MTRR_I686_FIXED_IDX16K 1
#define MTRR_I686_FIXED_IDX4K 3
#define MTRR_I686_NVAR 8
#define MTRR_I686_64K_START 0x00000
#define MTRR_I686_16K_START 0x80000
#define MTRR_I686_4K_START 0xc0000
#define MTRR_I686_NFIXED_64K 1
#define MTRR_I686_NFIXED_16K 2
#define MTRR_I686_NFIXED_4K 8
#define MTRR_I686_NFIXED 11
#define MTRR_I686_NFIXED_SOFT_64K (MTRR_I686_NFIXED_64K * 8)
#define MTRR_I686_NFIXED_SOFT_16K (MTRR_I686_NFIXED_16K * 8)
#define MTRR_I686_NFIXED_SOFT_4K (MTRR_I686_NFIXED_4K * 8)
#define MTRR_I686_NFIXED_SOFT (MTRR_I686_NFIXED * 8)
#define MTRR_I686_ENABLE_MASK 0x0800
#define MTRR_I686_FIXED_ENABLE_MASK 0x0400
#define MTRR_I686_CAP_VCNT_MASK 0x00ff
#define MTRR_I686_CAP_FIX_MASK 0x0100
#define MTRR_I686_CAP_WC_MASK 0x0400
#define MTRR_TYPE_UC 0
#define MTRR_TYPE_WC 1
#define MTRR_TYPE_UNDEF1 2
#define MTRR_TYPE_UNDEF2 3
#define MTRR_TYPE_WT 4
#define MTRR_TYPE_WP 5
#define MTRR_TYPE_WB 6
struct mtrr_state {
uint32_t msraddr;
uint64_t msrval;
};
#define MTRR_PRIVATE 0x0001 /* 'own' range, reset at exit */
#define MTRR_FIXED 0x0002 /* use fixed range mtrr */
#define MTRR_VALID 0x0004 /* entry is valid */
#define MTRR_CANTSET MTRR_FIXED
#define MTRR_I686_MASK_VALID (1 << 11)
/*
* AMD K6 MTRRs.
*
* There are two of these MTRR-like registers in the UWCRR.
*/
#define MTRR_K6_ADDR_SHIFT 17
#define MTRR_K6_ADDR (0x7fffU << MTRR_K6_ADDR_SHIFT)
#define MTRR_K6_MASK_SHIFT 2
#define MTRR_K6_MASK (0x7fffU << MTRR_K6_MASK_SHIFT)
#define MTRR_K6_WC (1U << 1) /* write-combine */
#define MTRR_K6_UC (1U << 0) /* uncached */
#define MTRR_K6_NVAR 2
#ifdef _KERNEL
#define mtrr_base_value(mtrrp) \
(((uint64_t)(mtrrp)->base) | ((uint64_t)(mtrrp)->type))
#define mtrr_mask_value(mtrrp) \
((~((mtrrp)->len - 1) & 0x0000000ffffff000))
#define mtrr_len(val) \
((~((val) & 0x0000000ffffff000)+1) & 0x0000000ffffff000)
#define mtrr_base(val) ((val) & 0x0000000ffffff000)
#define mtrr_type(val) ((uint8_t)((val) & 0x00000000000000ff))
#define mtrr_valid(val) (((val) & MTRR_I686_MASK_VALID) != 0)
struct proc;
struct mtrr;
void i686_mtrr_init_first(void);
void k6_mtrr_init_first(void);
struct mtrr_funcs {
void (*init_cpu)(struct cpu_info *ci);
void (*reload_cpu)(struct cpu_info *ci);
void (*clean)(struct proc *p);
int (*set)(struct mtrr *, int *n, struct proc *p, int flags);
int (*get)(struct mtrr *, int *n, struct proc *p, int flags);
void (*commit)(void);
void (*dump)(const char *tag);
};
extern struct mtrr_funcs i686_mtrr_funcs;
extern struct mtrr_funcs k6_mtrr_funcs;
extern struct mtrr_funcs *mtrr_funcs;
#define mtrr_init_cpu(ci) mtrr_funcs->init_cpu(ci)
#define mtrr_reload_cpu(ci) mtrr_funcs->reload_cpu(ci)
#define mtrr_clean(p) mtrr_funcs->clean(p)
#define mtrr_set(mp,n,p,f) mtrr_funcs->set(mp,n,p,f)
#define mtrr_get(mp,n,p,f) mtrr_funcs->get(mp,n,p,f)
#define mtrr_dump(s) mtrr_funcs->dump(s)
#define mtrr_commit() mtrr_funcs->commit()
#define MTRR_GETSET_USER 0x0001
#define MTRR_GETSET_KERNEL 0x0002
#endif /* _KERNEL */
struct mtrr {
uint64_t base; /* physical base address */
uint64_t len;
uint8_t type;
int flags;
pid_t owner; /* valid if MTRR_PRIVATE set in flags */
};
#endif /* _X86_MTRR_H_ */
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