sym_conf.h revision 53790
1/* 2 * Device driver optimized for the Symbios/LSI 53C896/53C895A/53C1010 3 * PCI-SCSI controllers. 4 * 5 * Copyright (C) 1999 Gerard Roudier <groudier@club-internet.fr> 6 * 7 * This driver also supports the following Symbios/LSI PCI-SCSI chips: 8 * 53C810A, 53C825A, 53C860, 53C875, 53C876, 53C885, 53C895. 9 * 10 * but does not support earlier chips as the following ones: 11 * 53C810, 53C815, 53C825. 12 * 13 * This driver for FreeBSD-CAM is derived from the Linux sym53c8xx driver. 14 * Copyright (C) 1998-1999 Gerard Roudier 15 * 16 * The sym53c8xx driver is derived from the ncr53c8xx driver that had been 17 * a port of the FreeBSD ncr driver to Linux-1.2.13. 18 * 19 * The original ncr driver has been written for 386bsd and FreeBSD by 20 * Wolfgang Stanglmeier <wolf@cologne.de> 21 * Stefan Esser <se@mi.Uni-Koeln.de> 22 * Copyright (C) 1994 Wolfgang Stanglmeier 23 * 24 * The initialisation code, and part of the code that addresses 25 * FreeBSD-CAM services is based on the aic7xxx driver for FreeBSD-CAM 26 * written by Justin T. Gibbs. 27 * 28 * Other major contributions: 29 * 30 * NVRAM detection and reading. 31 * Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk> 32 * 33 *----------------------------------------------------------------------------- 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. The name of the author may not be used to endorse or promote products 44 * derived from this software without specific prior written permission. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 49 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 50 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 56 * SUCH DAMAGE. 57 */ 58#ifndef SYM_CONF_H 59#define SYM_CONF_H 60 61/*------------------------------------------------------------------- 62 * Static configuration. 63 *------------------------------------------------------------------- 64 */ 65 66/* 67 * Support for earliest LSI53C1010 boards. 68 * Commercial chips will be fixed, and then the 69 * corresponding code will get useless. 70 */ 71/* #define SYMCONF_BROKEN_U3EN_SUPPORT */ 72 73/* 74 * Use Normal IO instead of MMIO. 75 */ 76/* #define SYMCONF_IOMAPPED */ 77 78/* 79 * Max tags for a device (logical unit) 80 * We use a power of 2, (7) means 2<<7=128 81 * Maximum is 8 -> 256 tags 82 */ 83#define SYMCONF_MAX_TAG_ORDER (6) 84 85/* 86 * Max number of scatter/gather entries for en IO. 87 * Each entry costs 8 bytes in the internal CCB data structure. 88 * For now 65 should suffice given the BSD O/Ses capabilities. 89 */ 90#define SYMCONF_MAX_SG (33) 91 92/* 93 * Max number of targets. 94 * Maximum is 16 and you are advised not to change this value. 95 */ 96#define SYMCONF_MAX_TARGET (16) 97 98/* 99 * Max number of logical units. 100 * SPI-2 allows up to 64 logical units, but in real life, target 101 * that implements more that 7 logical units are pretty rare. 102 * Anyway, the cost of accepting up to 64 logical unit is low in 103 * this driver, thus going with the maximum is acceptable. 104 */ 105#define SYMCONF_MAX_LUN (8) 106 107/* 108 * Max number of IO control blocks queued to the controller. 109 * Each entry needs 8 bytes and the queues are allocated contiguously. 110 * Since we donnot want to allocate more than a page, the theorical 111 * maximum is PAGE_SIZE/8. For safety, we announce a bit less to the 112 * access method. :) 113 * When not supplied, as it is suggested, the driver compute some 114 * good value for this parameter. 115 */ 116/* #define SYMCONF_MAX_START (PAGE_SIZE/8 - 16) */ 117 118/* 119 * Support for NVRAM. 120 */ 121#define SYMCONF_NVRAM_SUPPORT 122/* #define SYMCONF_DEBUG_SUPPORT */ 123 124/* 125 * Support for Immediate Arbitration. 126 * Not advised. 127 */ 128/* #define SYMCONF_IARB_SUPPORT */ 129 130/* 131 * Not needed on FreeBSD, since the system allocator 132 * does provide naturally aligned addresses. 133 */ 134#define SYMCONF_USE_INTERNAL_ALLOCATOR 135 136/*------------------------------------------------------------------- 137 * Configuration that could be dynamic if it was possible 138 * to pass arguments to the driver. 139 *------------------------------------------------------------------- 140 */ 141 142/* 143 * HOST default scsi id. 144 */ 145#define SYMSETUP_HOST_ID 7 146 147/* 148 * Max synchronous transfers. 149 */ 150#define SYMSETUP_MIN_SYNC (9) 151 152/* 153 * Max wide order. 154 */ 155#define SYMSETUP_MAX_WIDE (1) 156 157/* 158 * Max SCSI offset. 159 */ 160#define SYMSETUP_MAX_OFFS (64) 161/* 162 * Default number of tags. 163 */ 164#define SYMSETUP_MAX_TAG (64) 165 166/* 167 * SYMBIOS NVRAM format support. 168 */ 169#define SYMSETUP_SYMBIOS_NVRAM (1) 170 171/* 172 * TEKRAM NVRAM format support. 173 */ 174#define SYMSETUP_TEKRAM_NVRAM (1) 175 176/* 177 * PCI parity checking. 178 */ 179#define SYMSETUP_PCI_PARITY (1) 180 181/* 182 * SCSI parity checking. 183 */ 184#define SYMSETUP_SCSI_PARITY (1) 185 186/* 187 * SCSI activity LED. 188 */ 189#define SYMSETUP_SCSI_LED (0) 190 191/* 192 * SCSI differential. 193 */ 194#define SYMSETUP_SCSI_DIFF (0) 195 196/* 197 * IRQ mode. 198 */ 199#define SYMSETUP_IRQ_MODE (0) 200 201/* 202 * Check SCSI BUS signal on reset. 203 */ 204#define SYMSETUP_SCSI_BUS_CHECK (1) 205 206/* 207 * Max burst for PCI (1<<value) 208 * 7 means: (1<<7) = 128 DWORDS. 209 */ 210#define SYMSETUP_BURST_ORDER (7) 211 212/* 213 * Only relevant if IARB support configured. 214 * - Max number of successive settings of IARB hints. 215 * - Set IARB on arbitration lost. 216 */ 217#define SYMCONF_IARB_MAX 3 218#define SYMCONF_SET_IARB_ON_ARB_LOST 1 219 220/* 221 * Returning wrong residuals may make problems. 222 * When zero, this define tells the driver to 223 * always return 0 as transfer residual. 224 * Btw, all my testings of residuals have succeeded. 225 */ 226#define SYMCONF_RESIDUAL_SUPPORT 1 227 228#endif /* SYM_CONF_H */ 229