1cd76c7513
. primary purpose is to synchronize with <ieeefp.h> which expects a fp_prec from sys/arch/x86/include/ieeefp.h
153 lines
4.8 KiB
C
153 lines
4.8 KiB
C
/* $NetBSD: mtrr.h,v 1.5 2011/12/15 09:38:21 abs Exp $ */
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/*-
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Bill Sommerfeld
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _X86_MTRR_H_
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#define _X86_MTRR_H_
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#define MTRR_I686_FIXED_IDX64K 0
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#define MTRR_I686_FIXED_IDX16K 1
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#define MTRR_I686_FIXED_IDX4K 3
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#define MTRR_I686_NVAR_MAX 16 /* could be upto 255? */
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#define MTRR_I686_64K_START 0x00000
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#define MTRR_I686_16K_START 0x80000
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#define MTRR_I686_4K_START 0xc0000
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#define MTRR_I686_NFIXED_64K 1
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#define MTRR_I686_NFIXED_16K 2
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#define MTRR_I686_NFIXED_4K 8
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#define MTRR_I686_NFIXED 11
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#define MTRR_I686_NFIXED_SOFT_64K (MTRR_I686_NFIXED_64K * 8)
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#define MTRR_I686_NFIXED_SOFT_16K (MTRR_I686_NFIXED_16K * 8)
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#define MTRR_I686_NFIXED_SOFT_4K (MTRR_I686_NFIXED_4K * 8)
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#define MTRR_I686_NFIXED_SOFT (MTRR_I686_NFIXED * 8)
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#define MTRR_I686_ENABLE_MASK 0x0800
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#define MTRR_I686_FIXED_ENABLE_MASK 0x0400
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#define MTRR_I686_CAP_VCNT_MASK 0x00ff
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#define MTRR_I686_CAP_FIX_MASK 0x0100
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#define MTRR_I686_CAP_WC_MASK 0x0400
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#define MTRR_TYPE_UC 0
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#define MTRR_TYPE_WC 1
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#define MTRR_TYPE_UNDEF1 2
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#define MTRR_TYPE_UNDEF2 3
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#define MTRR_TYPE_WT 4
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#define MTRR_TYPE_WP 5
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#define MTRR_TYPE_WB 6
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struct mtrr_state {
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uint32_t msraddr;
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uint64_t msrval;
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};
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#define MTRR_PRIVATE 0x0001 /* 'own' range, reset at exit */
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#define MTRR_FIXED 0x0002 /* use fixed range mtrr */
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#define MTRR_VALID 0x0004 /* entry is valid */
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#define MTRR_CANTSET MTRR_FIXED
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#define MTRR_I686_MASK_VALID (1 << 11)
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/*
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* AMD K6 MTRRs.
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*
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* There are two of these MTRR-like registers in the UWCRR.
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*/
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#define MTRR_K6_ADDR_SHIFT 17
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#define MTRR_K6_ADDR (0x7fffU << MTRR_K6_ADDR_SHIFT)
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#define MTRR_K6_MASK_SHIFT 2
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#define MTRR_K6_MASK (0x7fffU << MTRR_K6_MASK_SHIFT)
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#define MTRR_K6_WC (1U << 1) /* write-combine */
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#define MTRR_K6_UC (1U << 0) /* uncached */
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#define MTRR_K6_NVAR 2
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#ifdef _KERNEL
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#define mtrr_base_value(mtrrp) \
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(((uint64_t)(mtrrp)->base) | ((uint64_t)(mtrrp)->type))
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#define mtrr_mask_value(mtrrp) \
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((~((mtrrp)->len - 1) & 0x0000000ffffff000LL))
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#define mtrr_len(val) \
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((~((val) & 0x0000000ffffff000LL)+1) & 0x0000000ffffff000LL)
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#define mtrr_base(val) ((val) & 0x0000000ffffff000LL)
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#define mtrr_type(val) ((uint8_t)((val) & 0x00000000000000ffLL))
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#define mtrr_valid(val) (((val) & MTRR_I686_MASK_VALID) != 0)
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struct proc;
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struct mtrr;
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void i686_mtrr_init_first(void);
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void k6_mtrr_init_first(void);
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struct mtrr_funcs {
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void (*init_cpu)(struct cpu_info *ci);
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void (*reload_cpu)(struct cpu_info *ci);
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void (*clean)(struct proc *p);
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int (*set)(struct mtrr *, int *n, struct proc *p, int flags);
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int (*get)(struct mtrr *, int *n, struct proc *p, int flags);
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void (*commit)(void);
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void (*dump)(const char *tag);
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};
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extern struct mtrr_funcs i686_mtrr_funcs;
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extern struct mtrr_funcs k6_mtrr_funcs;
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extern struct mtrr_funcs *mtrr_funcs;
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#define mtrr_init_cpu(ci) mtrr_funcs->init_cpu(ci)
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#define mtrr_reload_cpu(ci) mtrr_funcs->reload_cpu(ci)
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#define mtrr_clean(p) mtrr_funcs->clean(p)
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#define mtrr_set(mp,n,p,f) mtrr_funcs->set(mp,n,p,f)
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#define mtrr_get(mp,n,p,f) mtrr_funcs->get(mp,n,p,f)
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#define mtrr_dump(s) mtrr_funcs->dump(s)
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#define mtrr_commit() mtrr_funcs->commit()
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#define MTRR_GETSET_USER 0x0001
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#define MTRR_GETSET_KERNEL 0x0002
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#endif /* _KERNEL */
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struct mtrr {
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uint64_t base; /* physical base address */
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uint64_t len;
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uint8_t type;
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int flags;
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pid_t owner; /* valid if MTRR_PRIVATE set in flags */
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};
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#endif /* _X86_MTRR_H_ */
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