bat.h (6412B) - Raw
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 69 struct 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) 164 extern struct bat battable[16]; 165 #endif 166 167 #endif /* _MACHINE_BAT_H_ */