master
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause AND BSD-4-Clause
3 *
4 * Copyright (c) 1999 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32/*-
33 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
34 * Copyright (C) 1995, 1996 TooLs GmbH.
35 * All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 3. All advertising materials mentioning features or use of this software
46 * must display the following acknowledgement:
47 * This product includes software developed by TooLs GmbH.
48 * 4. The name of TooLs GmbH may not be used to endorse or promote products
49 * derived from this software without specific prior written permission.
50 *
51 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
52 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
53 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
54 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
56 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
57 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
58 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
59 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
60 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 *
62 * $NetBSD: bat.h,v 1.2 1999/12/18 01:36:06 thorpej Exp $
63 */
64
65#ifndef _MACHINE_BAT_H_
66#define _MACHINE_BAT_H_
67
68#ifndef LOCORE
69struct bat {
70 u_int32_t batu;
71 u_int32_t batl;
72};
73#endif
74
75/* Lower BAT bits (all but PowerPC 601): */
76#define BAT_PBS 0xfffe0000 /* physical block start */
77#define BAT_W 0x00000040 /* 1 = write-through, 0 = write-back */
78#define BAT_I 0x00000020 /* cache inhibit */
79#define BAT_M 0x00000010 /* memory coherency enable */
80#define BAT_G 0x00000008 /* guarded region */
81
82#define BAT_PP_NONE 0x00000000 /* no access permission */
83#define BAT_PP_RO_S 0x00000001 /* read-only (soft) */
84#define BAT_PP_RW 0x00000002 /* read/write */
85#define BAT_PP_RO 0x00000003 /* read-only */
86
87/* Upper BAT bits (all but PowerPC 601): */
88#define BAT_EBS 0xfffe0000 /* effective block start */
89#define BAT_BL 0x00001ffc /* block length */
90#define BAT_Vs 0x00000002 /* valid in supervisor mode */
91#define BAT_Vu 0x00000001 /* valid in user mode */
92
93#define BAT_V (BAT_Vs|BAT_Vu)
94
95/* Block Length encoding (all but PowerPC 601): */
96#define BAT_BL_128K 0x00000000
97#define BAT_BL_256K 0x00000004
98#define BAT_BL_512K 0x0000000c
99#define BAT_BL_1M 0x0000001c
100#define BAT_BL_2M 0x0000003c
101#define BAT_BL_4M 0x0000007c
102#define BAT_BL_8M 0x000000fc
103#define BAT_BL_16M 0x000001fc
104#define BAT_BL_32M 0x000003fc
105#define BAT_BL_64M 0x000007fc
106#define BAT_BL_128M 0x00000ffc
107#define BAT_BL_256M 0x00001ffc
108
109#define BATU(va, len, v) \
110 (((va) & BAT_EBS) | ((len) & BAT_BL) | ((v) & BAT_V))
111
112#define BATL(pa, wimg, pp) \
113 (((pa) & BAT_PBS) | (wimg) | (pp))
114
115/* Lower BAT bits (PowerPC 601): */
116#define BAT601_PBN 0xfffe0000 /* physical block number */
117#define BAT601_V 0x00000040 /* valid */
118#define BAT601_BSM 0x0000003f /* block size mask */
119
120/* Upper BAT bits (PowerPC 601): */
121#define BAT601_BLPI 0xfffe0000 /* block logical page index */
122#define BAT601_W 0x00000040 /* 1 = write-through, 0 = write-back */
123#define BAT601_I 0x00000020 /* cache inhibit */
124#define BAT601_M 0x00000010 /* memory coherency enable */
125#define BAT601_Ks 0x00000008 /* key-supervisor */
126#define BAT601_Ku 0x00000004 /* key-user */
127
128/*
129 * Permission bits on the PowerPC 601 are modified by the appropriate
130 * Key bit:
131 *
132 * Key PP Access
133 * 0 NONE read/write
134 * 0 RO_S read/write
135 * 0 RW read/write
136 * 0 RO read-only
137 *
138 * 1 NONE none
139 * 1 RO_S read-only
140 * 1 RW read/write
141 * 1 RO read-only
142 */
143#define BAT601_PP_NONE 0x00000000 /* no access permission */
144#define BAT601_PP_RO_S 0x00000001 /* read-only (soft) */
145#define BAT601_PP_RW 0x00000002 /* read/write */
146#define BAT601_PP_RO 0x00000003 /* read-only */
147
148/* Block Size Mask encoding (PowerPC 601): */
149#define BAT601_BSM_128K 0x00000000
150#define BAT601_BSM_256K 0x00000001
151#define BAT601_BSM_512K 0x00000003
152#define BAT601_BSM_1M 0x00000007
153#define BAT601_BSM_2M 0x0000000f
154#define BAT601_BSM_4M 0x0000001f
155#define BAT601_BSM_8M 0x0000003f
156
157#define BATU601(va, wim, key, pp) \
158 (((va) & BAT601_BLPI) | (wim) | (key) | (pp))
159
160#define BATL601(pa, size, v) \
161 (((pa) & BAT601_PBN) | (v) | (size))
162
163#if defined(_KERNEL) && !defined(LOCORE)
164extern struct bat battable[16];
165#endif
166
167#endif /* _MACHINE_BAT_H_ */