1 /* $NetBSD: bat.h,v 1.5 2003/03/14 06:21:19 matt 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 _POWERPC_OEA_BAT_H_ 71 #define _POWERPC_OEA_BAT_H_ 72 73 #ifndef _LOCORE 74 struct bat { 75 register_t batu; 76 register_t batl; 77 }; 78 #endif 79 80 /* Lower BAT bits (all but PowerPC 601): */ 81 #define BAT_RPN (~0x1ffff) /* physical block start */ 82 #define BAT_W 0x00000040 /* 1 = write-through, 0 = write-back */ 83 #define BAT_I 0x00000020 /* cache inhibit */ 84 #define BAT_M 0x00000010 /* memory coherency enable */ 85 #define BAT_G 0x00000008 /* guarded region (not on 601) */ 86 87 #define BAT_PP 0x00000003 /* PP mask */ 88 #define BAT_PP_NONE 0x00000000 /* no access permission */ 89 #define BAT_PP_RO_S 0x00000001 /* read-only (soft) */ 90 #define BAT_PP_RW 0x00000002 /* read/write */ 91 #define BAT_PP_RO 0x00000003 /* read-only */ 92 93 /* Upper BAT bits (all but PowerPC 601): */ 94 #define BAT_EPI (~0x1ffffL) /* effective block start */ 95 #define BAT_BL 0x00001ffc /* block length */ 96 #define BAT_Vs 0x00000002 /* valid in supervisor mode */ 97 #define BAT_Vu 0x00000001 /* valid in user mode */ 98 99 #define BAT_V (BAT_Vs|BAT_Vu) 100 101 /* Block Length encoding (all but PowerPC 601): */ 102 #define BAT_BL_128K 0x00000000 103 #define BAT_BL_256K 0x00000004 104 #define BAT_BL_512K 0x0000000c 105 #define BAT_BL_1M 0x0000001c 106 #define BAT_BL_2M 0x0000003c 107 #define BAT_BL_4M 0x0000007c 108 #define BAT_BL_8M 0x000000fc 109 #define BAT_BL_16M 0x000001fc 110 #define BAT_BL_32M 0x000003fc 111 #define BAT_BL_64M 0x000007fc 112 #define BAT_BL_128M 0x00000ffc 113 #define BAT_BL_256M 0x00001ffc 114 115 #define BATU(va, len, v) \ 116 (((va) & BAT_EPI) | ((len) & BAT_BL) | ((v) & BAT_V)) 117 118 #define BATL(pa, wimg, pp) \ 119 (((pa) & BAT_RPN) | (wimg) | (pp)) 120 121 #define BAT_VA_MATCH_P(batu,va) \ 122 (((~(((batu)&BAT_BL)<<15))&(va)&BAT_EPI)==((batu)&BAT_EPI)) 123 124 #define BAT_PA_MATCH_P(batu,batl,pa) \ 125 (((~(((batu)&BAT_BL)<<15))&(pa)&BAT_RPN)==((batl)&BAT_RPN)) 126 127 #define BAT_VALID_P(batu, msr) \ 128 (((msr)&PSL_PR)?(((batu)&BAT_Vu)==BAT_Vu):(((batu)&BAT_Vs)==BAT_Vs)) 129 130 /* Lower BAT bits (PowerPC 601): */ 131 #define BAT601_PBN 0xfffe0000 /* physical block number */ 132 #define BAT601_V 0x00000040 /* valid */ 133 #define BAT601_BSM 0x0000003f /* block size mask */ 134 135 /* Upper BAT bits (PowerPC 601): */ 136 #define BAT601_BLPI 0xfffe0000 /* block logical page index */ 137 #define BAT601_W 0x00000040 /* 1 = write-through, 0 = write-back */ 138 #define BAT601_I 0x00000020 /* cache inhibit */ 139 #define BAT601_M 0x00000010 /* memory coherency enable */ 140 #define BAT601_Ks 0x00000008 /* key-supervisor */ 141 #define BAT601_Ku 0x00000004 /* key-user */ 142 143 /* 144 * Permission bits on the PowerPC 601 are modified by the appropriate 145 * Key bit: 146 * 147 * Key PP Access 148 * 0 NONE read/write 149 * 0 RO_S read/write 150 * 0 RW read/write 151 * 0 RO read-only 152 * 153 * 1 NONE none 154 * 1 RO_S read-only 155 * 1 RW read/write 156 * 1 RO read-only 157 */ 158 #define BAT601_PP 0x00000003 159 #define BAT601_PP_NONE 0x00000000 /* no access permission */ 160 #define BAT601_PP_RO_S 0x00000001 /* read-only (soft) */ 161 #define BAT601_PP_RW 0x00000002 /* read/write */ 162 #define BAT601_PP_RO 0x00000003 /* read-only */ 163 164 /* Block Size Mask encoding (PowerPC 601): */ 165 #define BAT601_BSM_128K 0x00000000 166 #define BAT601_BSM_256K 0x00000001 167 #define BAT601_BSM_512K 0x00000003 168 #define BAT601_BSM_1M 0x00000007 169 #define BAT601_BSM_2M 0x0000000f 170 #define BAT601_BSM_4M 0x0000001f 171 #define BAT601_BSM_8M 0x0000003f 172 173 #define BATU601(va, wim, key, pp) \ 174 (((va) & BAT601_BLPI) | (wim) | (key) | (pp)) 175 176 #define BATL601(pa, size, v) \ 177 (((pa) & BAT601_PBN) | (v) | (size)) 178 179 #define BAT601_VA_MATCH_P(batu, batl, va) \ 180 (((~(((batl)&BAT601_BSM)<<17))&(va)&BAT601_BLPI)==((batu)&BAT601_BLPI)) 181 182 #define BAT601_VALID_P(batl) \ 183 ((batl) & BAT601_V) 184 185 #ifdef _KERNEL 186 #ifndef _LOCORE 187 void oea_batinit(paddr_t, ...); 188 void oea_iobat_add(paddr_t, register_t); 189 void oea_iobat_remove(paddr_t); 190 extern struct bat battable[]; 191 #endif 192 #endif 193 194 #endif /* _POWERPC_OEA_BAT_H_ */ 195