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  * This program is free software; you can redistribute it and/or modify
  26  * it under the terms of the GNU General Public License as published by
  27  * the Free Software Foundation; either version 2 of the License, or
  28  * (at your option) any later version.
  29  *
  30  * This program is distributed in the hope that it will be useful,
  31  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  32  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  33  * GNU General Public License for more details.
  34  *
  35  * You should have received a copy of the GNU General Public License
  36  * along with this program; if not, write to the Free Software
  37  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  38  */
  39
  40 #ifndef SYM53C8XX_H
  41 #define SYM53C8XX_H
  42
  43 #include <linux/config.h>
  44
  45 #ifdef CONFIG_SCSI_SYM53C8XX_IOMAPPED
  46 #define SYM_CONF_IOMAPPED
  47 #endif
  48
  49 /*
  50  *  DMA addressing mode.
  51  *
  52  *  0 : 32 bit addressing for all chips.
  53  *  1 : 40 bit addressing when supported by chip.
  54  *  2 : 64 bit addressing when supported by chip,
  55  *      limited to 16 segments of 4 GB -> 64 GB max.
  56  */
  57 #define SYM_CONF_DMA_ADDRESSING_MODE CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE
  58
  59 /*
  60  *  NVRAM support.
  61  */
  62 #if 1
  63 #define SYM_CONF_NVRAM_SUPPORT          (1)
  64 #endif
  65
  66 /*
  67  *  These options are not tunable from 'make config'
  68  */
  69 #if 1
  70 #define SYM_LINUX_PROC_INFO_SUPPORT
  71 #define SYM_LINUX_USER_COMMAND_SUPPORT
  72 #define SYM_LINUX_USER_INFO_SUPPORT
  73 #define SYM_LINUX_DEBUG_CONTROL_SUPPORT
  74 #endif
  75
  76 /*
  77  *  Also handle old NCR chips if not (0).
  78  */
  79 #define SYM_CONF_GENERIC_SUPPORT        (1)
  80
  81 /*
  82  *  Allow tags from 2 to 256, default 8
  83  */
  84 #ifndef CONFIG_SCSI_SYM53C8XX_MAX_TAGS
  85 #define CONFIG_SCSI_SYM53C8XX_MAX_TAGS  (8)
  86 #endif
  87
  88 #if     CONFIG_SCSI_SYM53C8XX_MAX_TAGS < 2
  89 #define SYM_CONF_MAX_TAG        (2)
  90 #elif   CONFIG_SCSI_SYM53C8XX_MAX_TAGS > 256
  91 #define SYM_CONF_MAX_TAG        (256)
  92 #else
  93 #define SYM_CONF_MAX_TAG        CONFIG_SCSI_SYM53C8XX_MAX_TAGS
  94 #endif
  95
  96 #ifndef CONFIG_SCSI_SYM53C8XX_DEFAULT_TAGS
  97 #define CONFIG_SCSI_SYM53C8XX_DEFAULT_TAGS      SYM_CONF_MAX_TAG
  98 #endif
  99
 100 /*
 101  *  Anyway, we configure the driver for at least 64 tags per LUN. :)
 102  */
 103 #if     SYM_CONF_MAX_TAG <= 64
 104 #define SYM_CONF_MAX_TAG_ORDER  (6)
 105 #elif   SYM_CONF_MAX_TAG <= 128
 106 #define SYM_CONF_MAX_TAG_ORDER  (7)
 107 #else
 108 #define SYM_CONF_MAX_TAG_ORDER  (8)
 109 #endif
 110
 111 /*
 112  *  Max number of SG entries.
 113  */
 114 #define SYM_CONF_MAX_SG         (96)
 115
 116 /*
 117  *  Driver setup structure.
 118  *
 119  *  This structure is initialized from linux config options.
 120  *  It can be overridden at boot-up by the boot command line.
 121  */
 122 struct sym_driver_setup {
 123         u_short max_tag;
 124         u_char  burst_order;
 125         u_char  scsi_led;
 126         u_char  scsi_diff;
 127         u_char  irq_mode;
 128         u_char  scsi_bus_check;
 129         u_char  host_id;
 130
 131         u_char  verbose;
 132         u_char  settle_delay;
 133         u_char  use_nvram;
 134         u_long  excludes[8];
 135         char    tag_ctrl[100];
 136 };
 137
 138 #define SYM_SETUP_MAX_TAG               sym_driver_setup.max_tag
 139 #define SYM_SETUP_BURST_ORDER           sym_driver_setup.burst_order
 140 #define SYM_SETUP_SCSI_LED              sym_driver_setup.scsi_led
 141 #define SYM_SETUP_SCSI_DIFF             sym_driver_setup.scsi_diff
 142 #define SYM_SETUP_IRQ_MODE              sym_driver_setup.irq_mode
 143 #define SYM_SETUP_SCSI_BUS_CHECK        sym_driver_setup.scsi_bus_check
 144 #define SYM_SETUP_HOST_ID               sym_driver_setup.host_id
 145 #define boot_verbose                    sym_driver_setup.verbose
 146
 147 /* Always enable parity. */
 148 #define SYM_SETUP_PCI_PARITY            1
 149 #define SYM_SETUP_SCSI_PARITY           1
 150
 151 /*
 152  *  Initial setup.
 153  *
 154  *  Can be overriden at startup by a command line.
 155  */
 156 #define SYM_LINUX_DRIVER_SETUP  {                               \
 157         .max_tag        = CONFIG_SCSI_SYM53C8XX_DEFAULT_TAGS,   \
 158         .burst_order    = 7,                                    \
 159         .scsi_led       = 1,                                    \
 160         .scsi_diff      = 1,                                    \
 161         .irq_mode       = 0,                                    \
 162         .scsi_bus_check = 1,                                    \
 163         .host_id        = 7,                                    \
 164         .verbose        = 0,                                    \
 165         .settle_delay   = 3,                                    \
 166         .use_nvram      = 1,                                    \
 167 }
 168
 169 extern struct sym_driver_setup sym_driver_setup;
 170 extern unsigned int sym_debug_flags;
 171 #define DEBUG_FLAGS     sym_debug_flags
 172
 173 #endif /* SYM53C8XX_H */