bat.h revision 256281
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: stable/10/sys/powerpc/include/bat.h 242904 2012-11-12 06:15:54Z rpaulo $ 69 */ 70 71#ifndef _MACHINE_BAT_H_ 72#define _MACHINE_BAT_H_ 73 74#ifndef LOCORE 75struct bat { 76 u_int32_t batu; 77 u_int32_t batl; 78}; 79#endif 80 81/* Lower BAT bits (all but PowerPC 601): */ 82#define BAT_PBS 0xfffe0000 /* physical block start */ 83#define BAT_W 0x00000040 /* 1 = write-through, 0 = write-back */ 84#define BAT_I 0x00000020 /* cache inhibit */ 85#define BAT_M 0x00000010 /* memory coherency enable */ 86#define BAT_G 0x00000008 /* guarded region */ 87 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_EBS 0xfffe0000 /* 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_EBS) | ((len) & BAT_BL) | ((v) & BAT_V)) 117 118#define BATL(pa, wimg, pp) \ 119 (((pa) & BAT_PBS) | (wimg) | (pp)) 120 121 122/* Lower BAT bits (PowerPC 601): */ 123#define BAT601_PBN 0xfffe0000 /* physical block number */ 124#define BAT601_V 0x00000040 /* valid */ 125#define BAT601_BSM 0x0000003f /* block size mask */ 126 127/* Upper BAT bits (PowerPC 601): */ 128#define BAT601_BLPI 0xfffe0000 /* block logical page index */ 129#define BAT601_W 0x00000040 /* 1 = write-through, 0 = write-back */ 130#define BAT601_I 0x00000020 /* cache inhibit */ 131#define BAT601_M 0x00000010 /* memory coherency enable */ 132#define BAT601_Ks 0x00000008 /* key-supervisor */ 133#define BAT601_Ku 0x00000004 /* key-user */ 134 135/* 136 * Permission bits on the PowerPC 601 are modified by the appropriate 137 * Key bit: 138 * 139 * Key PP Access 140 * 0 NONE read/write 141 * 0 RO_S read/write 142 * 0 RW read/write 143 * 0 RO read-only 144 * 145 * 1 NONE none 146 * 1 RO_S read-only 147 * 1 RW read/write 148 * 1 RO read-only 149 */ 150#define BAT601_PP_NONE 0x00000000 /* no access permission */ 151#define BAT601_PP_RO_S 0x00000001 /* read-only (soft) */ 152#define BAT601_PP_RW 0x00000002 /* read/write */ 153#define BAT601_PP_RO 0x00000003 /* read-only */ 154 155/* Block Size Mask encoding (PowerPC 601): */ 156#define BAT601_BSM_128K 0x00000000 157#define BAT601_BSM_256K 0x00000001 158#define BAT601_BSM_512K 0x00000003 159#define BAT601_BSM_1M 0x00000007 160#define BAT601_BSM_2M 0x0000000f 161#define BAT601_BSM_4M 0x0000001f 162#define BAT601_BSM_8M 0x0000003f 163 164#define BATU601(va, wim, key, pp) \ 165 (((va) & BAT601_BLPI) | (wim) | (key) | (pp)) 166 167#define BATL601(pa, size, v) \ 168 (((pa) & BAT601_PBN) | (v) | (size)) 169 170#if defined(_KERNEL) && !defined(LOCORE) 171extern struct bat battable[16]; 172#endif 173 174#endif /* _MACHINE_BAT_H_ */ 175