bat.h revision 139825
1/*- 2 * Copyright (c) 1999 The NetBSD Foundation, Inc. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to The NetBSD Foundation 6 * by Jason R. Thorpe. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the NetBSD 19 * Foundation, Inc. and its contributors. 20 * 4. Neither the name of The NetBSD Foundation nor the names of its 21 * contributors may be used to endorse or promote products derived 22 * from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 25 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 26 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 34 * POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37/*- 38 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 39 * Copyright (C) 1995, 1996 TooLs GmbH. 40 * All rights reserved. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by TooLs GmbH. 53 * 4. The name of TooLs GmbH may not be used to endorse or promote products 54 * derived from this software without specific prior written permission. 55 * 56 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 57 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 58 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 59 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 60 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 61 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 62 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 63 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 64 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 65 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 66 * 67 * $NetBSD: bat.h,v 1.2 1999/12/18 01:36:06 thorpej Exp $ 68 * $FreeBSD: head/sys/powerpc/include/bat.h 139825 2005-01-07 02:29:27Z imp $ 69 */ 70 71#ifndef _MACHINE_BAT_H_ 72#define _MACHINE_BAT_H_ 73 74struct bat { 75 u_int32_t batu; 76 u_int32_t batl; 77}; 78 79/* Lower BAT bits (all but PowerPC 601): */ 80#define BAT_PBS 0xfffe0000 /* physical block start */ 81#define BAT_W 0x00000040 /* 1 = write-through, 0 = write-back */ 82#define BAT_I 0x00000020 /* cache inhibit */ 83#define BAT_M 0x00000010 /* memory coherency enable */ 84#define BAT_G 0x00000008 /* guarded region */ 85 86#define BAT_PP_NONE 0x00000000 /* no access permission */ 87#define BAT_PP_RO_S 0x00000001 /* read-only (soft) */ 88#define BAT_PP_RW 0x00000002 /* read/write */ 89#define BAT_PP_RO 0x00000003 /* read-only */ 90 91/* Upper BAT bits (all but PowerPC 601): */ 92#define BAT_EBS 0xfffe0000 /* effective block start */ 93#define BAT_BL 0x00001ffc /* block length */ 94#define BAT_Vs 0x00000002 /* valid in supervisor mode */ 95#define BAT_Vu 0x00000001 /* valid in user mode */ 96 97#define BAT_V (BAT_Vs|BAT_Vu) 98 99/* Block Length encoding (all but PowerPC 601): */ 100#define BAT_BL_128K 0x00000000 101#define BAT_BL_256K 0x00000004 102#define BAT_BL_512K 0x0000000c 103#define BAT_BL_1M 0x0000001c 104#define BAT_BL_2M 0x0000003c 105#define BAT_BL_4M 0x0000007c 106#define BAT_BL_8M 0x000000fc 107#define BAT_BL_16M 0x000001fc 108#define BAT_BL_32M 0x000003fc 109#define BAT_BL_64M 0x000007fc 110#define BAT_BL_128M 0x00000ffc 111#define BAT_BL_256M 0x00001ffc 112 113#define BATU(va, len, v) \ 114 (((va) & BAT_EBS) | ((len) & BAT_BL) | ((v) & BAT_V)) 115 116#define BATL(pa, wimg, pp) \ 117 (((pa) & BAT_PBS) | (wimg) | (pp)) 118 119 120/* Lower BAT bits (PowerPC 601): */ 121#define BAT601_PBN 0xfffe0000 /* physical block number */ 122#define BAT601_V 0x00000040 /* valid */ 123#define BAT601_BSM 0x0000003f /* block size mask */ 124 125/* Upper BAT bits (PowerPC 601): */ 126#define BAT601_BLPI 0xfffe0000 /* block logical page index */ 127#define BAT601_W 0x00000040 /* 1 = write-through, 0 = write-back */ 128#define BAT601_I 0x00000020 /* cache inhibit */ 129#define BAT601_M 0x00000010 /* memory coherency enable */ 130#define BAT601_Ks 0x00000008 /* key-supervisor */ 131#define BAT601_Ku 0x00000004 /* key-user */ 132 133/* 134 * Permission bits on the PowerPC 601 are modified by the appropriate 135 * Key bit: 136 * 137 * Key PP Access 138 * 0 NONE read/write 139 * 0 RO_S read/write 140 * 0 RW read/write 141 * 0 RO read-only 142 * 143 * 1 NONE none 144 * 1 RO_S read-only 145 * 1 RW read/write 146 * 1 RO read-only 147 */ 148#define BAT601_PP_NONE 0x00000000 /* no access permission */ 149#define BAT601_PP_RO_S 0x00000001 /* read-only (soft) */ 150#define BAT601_PP_RW 0x00000002 /* read/write */ 151#define BAT601_PP_RO 0x00000003 /* read-only */ 152 153/* Block Size Mask encoding (PowerPC 601): */ 154#define BAT601_BSM_128K 0x00000000 155#define BAT601_BSM_256K 0x00000001 156#define BAT601_BSM_512K 0x00000003 157#define BAT601_BSM_1M 0x00000007 158#define BAT601_BSM_2M 0x0000000f 159#define BAT601_BSM_4M 0x0000001f 160#define BAT601_BSM_8M 0x0000003f 161 162#define BATU601(va, wim, key, pp) \ 163 (((va) & BAT601_BLPI) | (wim) | (key) | (pp)) 164 165#define BATL601(pa, size, v) \ 166 (((pa) & BAT601_PBN) | (v) | (size)) 167 168#ifdef _KERNEL 169extern struct bat battable[16]; 170#endif 171 172#endif /* _MACHINE_BAT_H_ */ 173