kernel/drivers/scsi/sym53c8xx_2/sym_nvram.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 SYM_NVRAM_H
  41 #define SYM_NVRAM_H
  42
  43 #include "sym53c8xx.h"
  44
  45 /*
  46  *      Symbios NVRAM data format
  47  */
  48 #define SYMBIOS_NVRAM_SIZE 368
  49 #define SYMBIOS_NVRAM_ADDRESS 0x100
  50
  51 struct Symbios_nvram {
  52 /* Header 6 bytes */
  53         u_short type;           /* 0x0000 */
  54         u_short byte_count;     /* excluding header/trailer */
  55         u_short checksum;
  56
  57 /* Controller set up 20 bytes */
  58         u_char  v_major;        /* 0x00 */
  59         u_char  v_minor;        /* 0x30 */
  60         u32     boot_crc;
  61         u_short flags;
  62 #define SYMBIOS_SCAM_ENABLE     (1)
  63 #define SYMBIOS_PARITY_ENABLE   (1<<1)
  64 #define SYMBIOS_VERBOSE_MSGS    (1<<2)
  65 #define SYMBIOS_CHS_MAPPING     (1<<3)
  66 #define SYMBIOS_NO_NVRAM        (1<<3)  /* ??? */
  67         u_short flags1;
  68 #define SYMBIOS_SCAN_HI_LO      (1)
  69         u_short term_state;
  70 #define SYMBIOS_TERM_CANT_PROGRAM       (0)
  71 #define SYMBIOS_TERM_ENABLED            (1)
  72 #define SYMBIOS_TERM_DISABLED           (2)
  73         u_short rmvbl_flags;
  74 #define SYMBIOS_RMVBL_NO_SUPPORT        (0)
  75 #define SYMBIOS_RMVBL_BOOT_DEVICE       (1)
  76 #define SYMBIOS_RMVBL_MEDIA_INSTALLED   (2)
  77         u_char  host_id;
  78         u_char  num_hba;        /* 0x04 */
  79         u_char  num_devices;    /* 0x10 */
  80         u_char  max_scam_devices;       /* 0x04 */
  81         u_char  num_valid_scam_devices; /* 0x00 */
  82         u_char  flags2;
  83 #define SYMBIOS_AVOID_BUS_RESET         (1<<2)
  84
  85 /* Boot order 14 bytes * 4 */
  86         struct Symbios_host{
  87                 u_short type;           /* 4:8xx / 0:nok */
  88                 u_short device_id;      /* PCI device id */
  89                 u_short vendor_id;      /* PCI vendor id */
  90                 u_char  bus_nr;         /* PCI bus number */
  91                 u_char  device_fn;      /* PCI device/function number << 3*/
  92                 u_short word8;
  93                 u_short flags;
  94 #define SYMBIOS_INIT_SCAN_AT_BOOT       (1)
  95                 u_short io_port;        /* PCI io_port address */
  96         } host[4];
  97
  98 /* Targets 8 bytes * 16 */
  99         struct Symbios_target {
 100                 u_char  flags;
 101 #define SYMBIOS_DISCONNECT_ENABLE       (1)
 102 #define SYMBIOS_SCAN_AT_BOOT_TIME       (1<<1)
 103 #define SYMBIOS_SCAN_LUNS               (1<<2)
 104 #define SYMBIOS_QUEUE_TAGS_ENABLED      (1<<3)
 105                 u_char  rsvd;
 106                 u_char  bus_width;      /* 0x08/0x10 */
 107                 u_char  sync_offset;
 108                 u_short sync_period;    /* 4*period factor */
 109                 u_short timeout;
 110         } target[16];
 111 /* Scam table 8 bytes * 4 */
 112         struct Symbios_scam {
 113                 u_short id;
 114                 u_short method;
 115 #define SYMBIOS_SCAM_DEFAULT_METHOD     (0)
 116 #define SYMBIOS_SCAM_DONT_ASSIGN        (1)
 117 #define SYMBIOS_SCAM_SET_SPECIFIC_ID    (2)
 118 #define SYMBIOS_SCAM_USE_ORDER_GIVEN    (3)
 119                 u_short status;
 120 #define SYMBIOS_SCAM_UNKNOWN            (0)
 121 #define SYMBIOS_SCAM_DEVICE_NOT_FOUND   (1)
 122 #define SYMBIOS_SCAM_ID_NOT_SET         (2)
 123 #define SYMBIOS_SCAM_ID_VALID           (3)
 124                 u_char  target_id;
 125                 u_char  rsvd;
 126         } scam[4];
 127
 128         u_char  spare_devices[15*8];
 129         u_char  trailer[6];             /* 0xfe 0xfe 0x00 0x00 0x00 0x00 */
 130 };
 131 typedef struct Symbios_nvram    Symbios_nvram;
 132 typedef struct Symbios_host     Symbios_host;
 133 typedef struct Symbios_target   Symbios_target;
 134 typedef struct Symbios_scam     Symbios_scam;
 135
 136 /*
 137  *      Tekram NvRAM data format.
 138  */
 139 #define TEKRAM_NVRAM_SIZE 64
 140 #define TEKRAM_93C46_NVRAM_ADDRESS 0
 141 #define TEKRAM_24C16_NVRAM_ADDRESS 0x40
 142
 143 struct Tekram_nvram {
 144         struct Tekram_target {
 145                 u_char  flags;
 146 #define TEKRAM_PARITY_CHECK             (1)
 147 #define TEKRAM_SYNC_NEGO                (1<<1)
 148 #define TEKRAM_DISCONNECT_ENABLE        (1<<2)
 149 #define TEKRAM_START_CMD                (1<<3)
 150 #define TEKRAM_TAGGED_COMMANDS          (1<<4)
 151 #define TEKRAM_WIDE_NEGO                (1<<5)
 152                 u_char  sync_index;
 153                 u_short word2;
 154         } target[16];
 155         u_char  host_id;
 156         u_char  flags;
 157 #define TEKRAM_MORE_THAN_2_DRIVES       (1)
 158 #define TEKRAM_DRIVES_SUP_1GB           (1<<1)
 159 #define TEKRAM_RESET_ON_POWER_ON        (1<<2)
 160 #define TEKRAM_ACTIVE_NEGATION          (1<<3)
 161 #define TEKRAM_IMMEDIATE_SEEK           (1<<4)
 162 #define TEKRAM_SCAN_LUNS                (1<<5)
 163 #define TEKRAM_REMOVABLE_FLAGS          (3<<6)  /* 0: disable; */
 164                                                 /* 1: boot device; 2:all */
 165         u_char  boot_delay_index;
 166         u_char  max_tags_index;
 167         u_short flags1;
 168 #define TEKRAM_F2_F6_ENABLED            (1)
 169         u_short spare[29];
 170 };
 171 typedef struct Tekram_nvram     Tekram_nvram;
 172 typedef struct Tekram_target    Tekram_target;
 173
 174 #ifndef CONFIG_PARISC
 175 struct pdc_initiator { int dummy; };
 176 #endif
 177
 178 /*
 179  *  Union of supported NVRAM formats.
 180  */
 181 struct sym_nvram {
 182         int type;
 183 #define SYM_SYMBIOS_NVRAM       (1)
 184 #define SYM_TEKRAM_NVRAM        (2)
 185 #define SYM_PARISC_PDC          (3)
 186 #if SYM_CONF_NVRAM_SUPPORT
 187         union {
 188                 Symbios_nvram Symbios;
 189                 Tekram_nvram Tekram;
 190                 struct pdc_initiator parisc;
 191         } data;
 192 #endif
 193 };
 194
 195 #if SYM_CONF_NVRAM_SUPPORT
 196 void sym_nvram_setup_host(struct Scsi_Host *shost, struct sym_hcb *np, struct sym_nvram *nvram);
 197 void sym_nvram_setup_target (struct sym_tcb *tp, int target, struct sym_nvram *nvp);
 198 int sym_read_nvram (struct sym_device *np, struct sym_nvram *nvp);
 199 char *sym_nvram_type(struct sym_nvram *nvp);
 200 #else
 201 static inline void sym_nvram_setup_host(struct Scsi_Host *shost, struct sym_hcb *np, struct sym_nvram *nvram) { }
 202 static inline void sym_nvram_setup_target(struct sym_tcb *tp, struct sym_nvram *nvram) { }
 203 static inline int sym_read_nvram(struct sym_device *np, struct sym_nvram *nvp)
 204 {
 205         nvp->type = 0;
 206         return 0;
 207 }
 208 static inline char *sym_nvram_type(struct sym_nvram *nvp)
 209 {
 210         return "No NVRAM";
 211 }
 212 #endif
 213
 214 #endif /* SYM_NVRAM_H */