drivers/scsi/sym53c8xx_2/sym53c8xx.h

   1 /*
   2  * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family
   3  * of PCI-SCSI IO processors.
   4  *
   5  * Copyright (C) 1999-2001  Gerard Roudier <groudier@free.fr>
   6  *
   7  * This driver is derived from the Linux sym53c8xx driver.
   8  * Copyright (C) 1998-2000  Gerard Roudier
   9  *
  10  * The sym53c8xx driver is derived from the ncr53c8xx driver that had been
  11  * a port of the FreeBSD ncr driver to Linux-1.2.13.
  12  *
  13  * The original ncr driver has been written for 386bsd and FreeBSD by
  14  *         Wolfgang Stanglmeier        <wolf@cologne.de>
  15  *         Stefan Esser                <se@mi.Uni-Koeln.de>
  16  * Copyright (C) 1994  Wolfgang Stanglmeier
  17  *
  18  * Other major contributions:
  19  *
  20  * NVRAM detection and reading.
  21  * Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
  22  *
  23  *-----------------------------------------------------------------------------
  24  *
  25  * Redistribution and use in source and binary forms, with or without
  26  * modification, are permitted provided that the following conditions
  27  * are met:
  28  * 1. Redistributions of source code must retain the above copyright
  29  *    notice, this list of conditions and the following disclaimer.
  30  * 2. The name of the author may not be used to endorse or promote products
  31  *    derived from this software without specific prior written permission.
  32  *
  33  * Where this Software is combined with software released under the terms of
  34  * the GNU Public License ("GPL") and the terms of the GPL would require the
  35  * combined work to also be released under the terms of the GPL, the terms
  36  * and conditions of this License will apply in addition to those of the
  37  * GPL with the exception of any terms or conditions of this License that
  38  * conflict with, or are expressly prohibited by, the GPL.
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
  41  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  43  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  44  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  45  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  46  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  48  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  49  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  50  * SUCH DAMAGE.
  51  */
  52
  53 #ifndef SYM53C8XX_H
  54 #define SYM53C8XX_H
  55
  56 #include <linux/config.h>
  57
  58 #ifdef CONFIG_SCSI_SYM53C8XX_IOMAPPED
  59 #define SYM_CONF_IOMAPPED
  60 #endif
  61
  62 /*
  63  *  DMA addressing mode.
  64  *
  65  *  0 : 32 bit addressing for all chips.
  66  *  1 : 40 bit addressing when supported by chip.
  67  *  2 : 64 bit addressing when supported by chip,
  68  *      limited to 16 segments of 4 GB -> 64 GB max.
  69  */
  70 #define SYM_CONF_DMA_ADDRESSING_MODE CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE
  71
  72 /*
  73  *  NVRAM support.
  74  */
  75 #if 1
  76 #define SYM_CONF_NVRAM_SUPPORT          (1)
  77 #endif
  78
  79 /*
  80  *  These options are not tunable from 'make config'
  81  */
  82 #if 1
  83 #define SYM_LINUX_PROC_INFO_SUPPORT
  84 #define SYM_LINUX_BOOT_COMMAND_LINE_SUPPORT
  85 #define SYM_LINUX_USER_COMMAND_SUPPORT
  86 #define SYM_LINUX_USER_INFO_SUPPORT
  87 #define SYM_LINUX_DEBUG_CONTROL_SUPPORT
  88 #endif
  89
  90 /*
  91  *  Also handle old NCR chips if not (0).
  92  */
  93 #define SYM_CONF_GENERIC_SUPPORT        (1)
  94
  95 /*
  96  *  Allow tags from 2 to 256, default 8
  97  */
  98 #ifndef CONFIG_SCSI_SYM53C8XX_MAX_TAGS
  99 #define CONFIG_SCSI_SYM53C8XX_MAX_TAGS  (8)
 100 #endif
 101
 102 #if     CONFIG_SCSI_SYM53C8XX_MAX_TAGS < 2
 103 #define SYM_CONF_MAX_TAG        (2)
 104 #elif   CONFIG_SCSI_SYM53C8XX_MAX_TAGS > 256
 105 #define SYM_CONF_MAX_TAG        (256)
 106 #else
 107 #define SYM_CONF_MAX_TAG        CONFIG_SCSI_SYM53C8XX_MAX_TAGS
 108 #endif
 109
 110 #ifndef CONFIG_SCSI_SYM53C8XX_DEFAULT_TAGS
 111 #define CONFIG_SCSI_SYM53C8XX_DEFAULT_TAGS      SYM_CONF_MAX_TAG
 112 #endif
 113
 114 /*
 115  *  Anyway, we configure the driver for at least 64 tags per LUN. :)
 116  */
 117 #if     SYM_CONF_MAX_TAG <= 64
 118 #define SYM_CONF_MAX_TAG_ORDER  (6)
 119 #elif   SYM_CONF_MAX_TAG <= 128
 120 #define SYM_CONF_MAX_TAG_ORDER  (7)
 121 #else
 122 #define SYM_CONF_MAX_TAG_ORDER  (8)
 123 #endif
 124
 125 /*
 126  *  Max number of SG entries.
 127  */
 128 #define SYM_CONF_MAX_SG         (96)
 129
 130 /*
 131  *  Driver setup structure.
 132  *
 133  *  This structure is initialized from linux config options.
 134  *  It can be overridden at boot-up by the boot command line.
 135  */
 136 struct sym_driver_setup {
 137         u_short max_tag;
 138         u_char  burst_order;
 139         u_char  scsi_led;
 140         u_char  scsi_diff;
 141         u_char  irq_mode;
 142         u_char  scsi_bus_check;
 143         u_char  host_id;
 144
 145         u_char  reverse_probe;
 146         u_char  verbose;
 147         u_short debug;
 148         u_char  settle_delay;
 149         u_char  use_nvram;
 150         u_long  excludes[8];
 151         char    tag_ctrl[100];
 152 };
 153
 154 #define SYM_SETUP_MAX_TAG               sym_driver_setup.max_tag
 155 #define SYM_SETUP_BURST_ORDER           sym_driver_setup.burst_order
 156 #define SYM_SETUP_SCSI_LED              sym_driver_setup.scsi_led
 157 #define SYM_SETUP_SCSI_DIFF             sym_driver_setup.scsi_diff
 158 #define SYM_SETUP_IRQ_MODE              sym_driver_setup.irq_mode
 159 #define SYM_SETUP_SCSI_BUS_CHECK        sym_driver_setup.scsi_bus_check
 160 #define SYM_SETUP_HOST_ID               sym_driver_setup.host_id
 161
 162 /* Always enable parity. */
 163 #define SYM_SETUP_PCI_PARITY            1
 164 #define SYM_SETUP_SCSI_PARITY           1
 165
 166 /*
 167  *  Initial setup.
 168  *
 169  *  Can be overriden at startup by a command line.
 170  */
 171 #define SYM_LINUX_DRIVER_SETUP  {                               \
 172         .max_tag        = CONFIG_SCSI_SYM53C8XX_DEFAULT_TAGS,   \
 173         .burst_order    = 7,                                    \
 174         .scsi_led       = 1,                                    \
 175         .scsi_diff      = 1,                                    \
 176         .irq_mode       = 0,                                    \
 177         .scsi_bus_check = 1,                                    \
 178         .host_id        = 7,                                    \
 179         .reverse_probe  = 0,                                    \
 180         .verbose        = 0,                                    \
 181         .debug          = 0,                                    \
 182         .settle_delay   = 3,                                    \
 183         .use_nvram      = 1,                                    \
 184 }
 185
 186 /*
 187  *  Boot fail safe setup.
 188  *
 189  *  Override initial setup from boot command line:
 190  *    sym53c8xx=safe:y
 191  */
 192 #define SYM_LINUX_DRIVER_SAFE_SETUP {                           \
 193         .max_tag        = 0,                                    \
 194         .burst_order    = 0,                                    \
 195         .scsi_led       = 0,                                    \
 196         .scsi_diff      = 1,                                    \
 197         .irq_mode       = 0,                                    \
 198         .scsi_bus_check = 2,                                    \
 199         .host_id        = 7,                                    \
 200         .reverse_probe  = 0,                                    \
 201         .verbose        = 2,                                    \
 202         .debug          = 0,                                    \
 203         .settle_delay   = 10,                                   \
 204         .use_nvram      = 1,                                    \
 205 }
 206
 207 /*
 208  *  This structure is initialized from linux config options.
 209  *  It can be overridden at boot-up by the boot command line.
 210  */
 211 #ifdef SYM_GLUE_C
 212 struct sym_driver_setup
 213         sym_driver_setup = SYM_LINUX_DRIVER_SETUP;
 214 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
 215 u_int   sym_debug_flags = 0;
 216 #endif
 217 #else
 218 extern struct sym_driver_setup sym_driver_setup;
 219 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
 220 extern u_int sym_debug_flags;
 221 #endif
 222 #endif /* SYM_GLUE_C */
 223
 224 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
 225 #define DEBUG_FLAGS     sym_debug_flags
 226 #endif
 227 #define boot_verbose    sym_driver_setup.verbose
 228
 229 #endif /* SYM53C8XX_H */