Annotation of sys/arch/amd64/include/mtrr.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: mtrr.h,v 1.1 2004/01/28 01:39:39 mickey Exp $ */
2: /* $NetBSD: mtrr.h,v 1.1 2003/02/26 21:26:11 fvdl Exp $ */
3:
4: /*-
5: * Copyright (c) 2000 The NetBSD Foundation, Inc.
6: * All rights reserved.
7: *
8: * This code is derived from software contributed to The NetBSD Foundation
9: * by Bill Sommerfeld
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the NetBSD
22: * Foundation, Inc. and its contributors.
23: * 4. Neither the name of The NetBSD Foundation nor the names of its
24: * contributors may be used to endorse or promote products derived
25: * from this software without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37: * POSSIBILITY OF SUCH DAMAGE.
38: */
39:
40: #ifndef _X86_MTRR_H_
41: #define _X86_MTRR_H_
42:
43: #define MTRR_I686_FIXED_IDX64K 0
44: #define MTRR_I686_FIXED_IDX16K 1
45: #define MTRR_I686_FIXED_IDX4K 3
46:
47: #define MTRR_I686_NVAR 8
48:
49: #define MTRR_I686_64K_START 0x00000
50: #define MTRR_I686_16K_START 0x80000
51: #define MTRR_I686_4K_START 0xc0000
52:
53: #define MTRR_I686_NFIXED_64K 1
54: #define MTRR_I686_NFIXED_16K 2
55: #define MTRR_I686_NFIXED_4K 8
56: #define MTRR_I686_NFIXED 11
57: #define MTRR_I686_NFIXED_SOFT_64K (MTRR_I686_NFIXED_64K * 8)
58: #define MTRR_I686_NFIXED_SOFT_16K (MTRR_I686_NFIXED_16K * 8)
59: #define MTRR_I686_NFIXED_SOFT_4K (MTRR_I686_NFIXED_4K * 8)
60: #define MTRR_I686_NFIXED_SOFT (MTRR_I686_NFIXED * 8)
61:
62: #define MTRR_I686_ENABLE_MASK 0x0800
63: #define MTRR_I686_FIXED_ENABLE_MASK 0x0400
64:
65: #define MTRR_I686_CAP_VCNT_MASK 0x00ff
66: #define MTRR_I686_CAP_FIX_MASK 0x0100
67: #define MTRR_I686_CAP_WC_MASK 0x0400
68:
69: #define MTRR_TYPE_UC 0
70: #define MTRR_TYPE_WC 1
71: #define MTRR_TYPE_UNDEF1 2
72: #define MTRR_TYPE_UNDEF2 3
73: #define MTRR_TYPE_WT 4
74: #define MTRR_TYPE_WP 5
75: #define MTRR_TYPE_WB 6
76:
77: struct mtrr_state {
78: uint32_t msraddr;
79: uint64_t msrval;
80: };
81:
82: #define MTRR_PRIVATE 0x0001 /* 'own' range, reset at exit */
83: #define MTRR_FIXED 0x0002 /* use fixed range mtrr */
84: #define MTRR_VALID 0x0004 /* entry is valid */
85:
86: #define MTRR_CANTSET MTRR_FIXED
87:
88: #define MTRR_I686_MASK_VALID (1 << 11)
89:
90: /*
91: * AMD K6 MTRRs.
92: *
93: * There are two of these MTRR-like registers in the UWCRR.
94: */
95:
96: #define MTRR_K6_ADDR_SHIFT 17
97: #define MTRR_K6_ADDR (0x7fffU << MTRR_K6_ADDR_SHIFT)
98: #define MTRR_K6_MASK_SHIFT 2
99: #define MTRR_K6_MASK (0x7fffU << MTRR_K6_MASK_SHIFT)
100: #define MTRR_K6_WC (1U << 1) /* write-combine */
101: #define MTRR_K6_UC (1U << 0) /* uncached */
102:
103: #define MTRR_K6_NVAR 2
104:
105: #ifdef _KERNEL
106:
107: #define mtrr_base_value(mtrrp) \
108: (((uint64_t)(mtrrp)->base) | ((uint64_t)(mtrrp)->type))
109: #define mtrr_mask_value(mtrrp) \
110: ((~((mtrrp)->len - 1) & 0x0000000ffffff000))
111:
112:
113: #define mtrr_len(val) \
114: ((~((val) & 0x0000000ffffff000)+1) & 0x0000000ffffff000)
115: #define mtrr_base(val) ((val) & 0x0000000ffffff000)
116: #define mtrr_type(val) ((uint8_t)((val) & 0x00000000000000ff))
117: #define mtrr_valid(val) (((val) & MTRR_I686_MASK_VALID) != 0)
118:
119: struct proc;
120: struct mtrr;
121:
122: void i686_mtrr_init_first(void);
123: void k6_mtrr_init_first(void);
124:
125: struct mtrr_funcs {
126: void (*init_cpu)(struct cpu_info *ci);
127: void (*reload_cpu)(struct cpu_info *ci);
128: void (*clean)(struct proc *p);
129: int (*set)(struct mtrr *, int *n, struct proc *p, int flags);
130: int (*get)(struct mtrr *, int *n, struct proc *p, int flags);
131: void (*commit)(void);
132: void (*dump)(const char *tag);
133: };
134:
135: extern struct mtrr_funcs i686_mtrr_funcs;
136: extern struct mtrr_funcs k6_mtrr_funcs;
137: extern struct mtrr_funcs *mtrr_funcs;
138:
139: #define mtrr_init_cpu(ci) mtrr_funcs->init_cpu(ci)
140: #define mtrr_reload_cpu(ci) mtrr_funcs->reload_cpu(ci)
141: #define mtrr_clean(p) mtrr_funcs->clean(p)
142: #define mtrr_set(mp,n,p,f) mtrr_funcs->set(mp,n,p,f)
143: #define mtrr_get(mp,n,p,f) mtrr_funcs->get(mp,n,p,f)
144: #define mtrr_dump(s) mtrr_funcs->dump(s)
145: #define mtrr_commit() mtrr_funcs->commit()
146:
147: #define MTRR_GETSET_USER 0x0001
148: #define MTRR_GETSET_KERNEL 0x0002
149:
150: #endif /* _KERNEL */
151:
152: struct mtrr {
153: uint64_t base; /* physical base address */
154: uint64_t len;
155: uint8_t type;
156: int flags;
157: pid_t owner; /* valid if MTRR_PRIVATE set in flags */
158: };
159:
160: #endif /* _X86_MTRR_H_ */
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