1 /* $NetBSD: bat.h,v 1.2 1999/12/18 01:36:06 thorpej Exp $ */ 2 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 41 * Copyright (C) 1995, 1996 TooLs GmbH. 42 * All rights reserved. 43 * 44 * Redistribution and use in source and binary forms, with or without 45 * modification, are permitted provided that the following conditions 46 * are met: 47 * 1. Redistributions of source code must retain the above copyright 48 * notice, this list of conditions and the following disclaimer. 49 * 2. Redistributions in binary form must reproduce the above copyright 50 * notice, this list of conditions and the following disclaimer in the 51 * documentation and/or other materials provided with the distribution. 52 * 3. All advertising materials mentioning features or use of this software 53 * must display the following acknowledgement: 54 * This product includes software developed by TooLs GmbH. 55 * 4. The name of TooLs GmbH may not be used to endorse or promote products 56 * derived from this software without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 59 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 60 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 61 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 62 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 63 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 64 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 65 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 66 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 67 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 68 */ 69 70 #ifndef _MACHINE_BAT_H_ 71 #define _MACHINE_BAT_H_ 72 73 struct bat { 74 u_int32_t batu; 75 u_int32_t batl; 76 }; 77 78 /* Lower BAT bits (all but PowerPC 601): */ 79 #define BAT_PBS 0xfffe0000 /* physical block start */ 80 #define BAT_W 0x00000040 /* 1 = write-through, 0 = write-back */ 81 #define BAT_I 0x00000020 /* cache inhibit */ 82 #define BAT_M 0x00000010 /* memory coherency enable */ 83 #define BAT_G 0x00000008 /* guarded region */ 84 85 #define BAT_PP_NONE 0x00000000 /* no access permission */ 86 #define BAT_PP_RO_S 0x00000001 /* read-only (soft) */ 87 #define BAT_PP_RW 0x00000002 /* read/write */ 88 #define BAT_PP_RO 0x00000003 /* read-only */ 89 90 /* Upper BAT bits (all but PowerPC 601): */ 91 #define BAT_EBS 0xfffe0000 /* effective block start */ 92 #define BAT_BL 0x00001ffc /* block length */ 93 #define BAT_Vs 0x00000002 /* valid in supervisor mode */ 94 #define BAT_Vu 0x00000001 /* valid in user mode */ 95 96 #define BAT_V (BAT_Vs|BAT_Vu) 97 98 /* Block Length encoding (all but PowerPC 601): */ 99 #define BAT_BL_128K 0x00000000 100 #define BAT_BL_256K 0x00000004 101 #define BAT_BL_512K 0x0000000c 102 #define BAT_BL_1M 0x0000001c 103 #define BAT_BL_2M 0x0000003c 104 #define BAT_BL_4M 0x0000007c 105 #define BAT_BL_8M 0x000000fc 106 #define BAT_BL_16M 0x000001fc 107 #define BAT_BL_32M 0x000003fc 108 #define BAT_BL_64M 0x000007fc 109 #define BAT_BL_128M 0x00000ffc 110 #define BAT_BL_256M 0x00001ffc 111 112 #define BATU(va, len, v) \ 113 (((va) & BAT_EBS) | ((len) & BAT_BL) | ((v) & BAT_V)) 114 115 #define BATL(pa, wimg, pp) \ 116 (((pa) & BAT_PBS) | (wimg) | (pp)) 117 118 119 /* Lower BAT bits (PowerPC 601): */ 120 #define BAT601_PBN 0xfffe0000 /* physical block number */ 121 #define BAT601_V 0x00000040 /* valid */ 122 #define BAT601_BSM 0x0000003f /* block size mask */ 123 124 /* Upper BAT bits (PowerPC 601): */ 125 #define BAT601_BLPI 0xfffe0000 /* block logical page index */ 126 #define BAT601_W 0x00000040 /* 1 = write-through, 0 = write-back */ 127 #define BAT601_I 0x00000020 /* cache inhibit */ 128 #define BAT601_M 0x00000010 /* memory coherency enable */ 129 #define BAT601_Ks 0x00000008 /* key-supervisor */ 130 #define BAT601_Ku 0x00000004 /* key-user */ 131 132 /* 133 * Permission bits on the PowerPC 601 are modified by the appropriate 134 * Key bit: 135 * 136 * Key PP Access 137 * 0 NONE read/write 138 * 0 RO_S read/write 139 * 0 RW read/write 140 * 0 RO read-only 141 * 142 * 1 NONE none 143 * 1 RO_S read-only 144 * 1 RW read/write 145 * 1 RO read-only 146 */ 147 #define BAT601_PP_NONE 0x00000000 /* no access permission */ 148 #define BAT601_PP_RO_S 0x00000001 /* read-only (soft) */ 149 #define BAT601_PP_RW 0x00000002 /* read/write */ 150 #define BAT601_PP_RO 0x00000003 /* read-only */ 151 152 /* Block Size Mask encoding (PowerPC 601): */ 153 #define BAT601_BSM_128K 0x00000000 154 #define BAT601_BSM_256K 0x00000001 155 #define BAT601_BSM_512K 0x00000003 156 #define BAT601_BSM_1M 0x00000007 157 #define BAT601_BSM_2M 0x0000000f 158 #define BAT601_BSM_4M 0x0000001f 159 #define BAT601_BSM_8M 0x0000003f 160 161 #define BATU601(va, wim, key, pp) \ 162 (((va) & BAT601_BLPI) | (wim) | (key) | (pp)) 163 164 #define BATL601(pa, size, v) \ 165 (((pa) & BAT601_PBN) | (v) | (size)) 166 167 #ifdef _KERNEL 168 extern struct bat battable[16]; 169 #endif 170 171 #endif /* _MACHINE_BAT_H_ */ 172