bat.h revision 263687
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 * 17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30/*- 31 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 32 * Copyright (C) 1995, 1996 TooLs GmbH. 33 * All rights reserved. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 1. Redistributions of source code must retain the above copyright 39 * notice, this list of conditions and the following disclaimer. 40 * 2. Redistributions in binary form must reproduce the above copyright 41 * notice, this list of conditions and the following disclaimer in the 42 * documentation and/or other materials provided with the distribution. 43 * 3. All advertising materials mentioning features or use of this software 44 * must display the following acknowledgement: 45 * This product includes software developed by TooLs GmbH. 46 * 4. The name of TooLs GmbH may not be used to endorse or promote products 47 * derived from this software without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 50 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 51 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 52 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 53 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 54 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 55 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 56 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 57 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 58 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 59 * 60 * $NetBSD: bat.h,v 1.2 1999/12/18 01:36:06 thorpej Exp $ 61 * $FreeBSD: stable/10/sys/powerpc/include/bat.h 263687 2014-03-24 13:48:04Z emaste $ 62 */ 63 64#ifndef _MACHINE_BAT_H_ 65#define _MACHINE_BAT_H_ 66 67#ifndef LOCORE 68struct bat { 69 u_int32_t batu; 70 u_int32_t batl; 71}; 72#endif 73 74/* Lower BAT bits (all but PowerPC 601): */ 75#define BAT_PBS 0xfffe0000 /* physical block start */ 76#define BAT_W 0x00000040 /* 1 = write-through, 0 = write-back */ 77#define BAT_I 0x00000020 /* cache inhibit */ 78#define BAT_M 0x00000010 /* memory coherency enable */ 79#define BAT_G 0x00000008 /* guarded region */ 80 81#define BAT_PP_NONE 0x00000000 /* no access permission */ 82#define BAT_PP_RO_S 0x00000001 /* read-only (soft) */ 83#define BAT_PP_RW 0x00000002 /* read/write */ 84#define BAT_PP_RO 0x00000003 /* read-only */ 85 86/* Upper BAT bits (all but PowerPC 601): */ 87#define BAT_EBS 0xfffe0000 /* effective block start */ 88#define BAT_BL 0x00001ffc /* block length */ 89#define BAT_Vs 0x00000002 /* valid in supervisor mode */ 90#define BAT_Vu 0x00000001 /* valid in user mode */ 91 92#define BAT_V (BAT_Vs|BAT_Vu) 93 94/* Block Length encoding (all but PowerPC 601): */ 95#define BAT_BL_128K 0x00000000 96#define BAT_BL_256K 0x00000004 97#define BAT_BL_512K 0x0000000c 98#define BAT_BL_1M 0x0000001c 99#define BAT_BL_2M 0x0000003c 100#define BAT_BL_4M 0x0000007c 101#define BAT_BL_8M 0x000000fc 102#define BAT_BL_16M 0x000001fc 103#define BAT_BL_32M 0x000003fc 104#define BAT_BL_64M 0x000007fc 105#define BAT_BL_128M 0x00000ffc 106#define BAT_BL_256M 0x00001ffc 107 108#define BATU(va, len, v) \ 109 (((va) & BAT_EBS) | ((len) & BAT_BL) | ((v) & BAT_V)) 110 111#define BATL(pa, wimg, pp) \ 112 (((pa) & BAT_PBS) | (wimg) | (pp)) 113 114 115/* 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_ */ 168