drivers/scsi/atari_scsi.h

   1 /*
   2  * atari_scsi.h -- Header file for the Atari native SCSI driver
   3  *
   4  * Copyright 1994 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de>
   5  *
   6  * (Loosely based on the work of Robert De Vries' team)
   7  *
   8  * This file is subject to the terms and conditions of the GNU General Public
   9  * License.  See the file COPYING in the main directory of this archive
  10  * for more details.
  11  *
  12  */
  13
  14
  15 #ifndef ATARI_SCSI_H
  16 #define ATARI_SCSI_H
  17
  18 /* (I_HAVE_OVERRUNS stuff removed) */
  19
  20 #ifndef ASM
  21 int atari_scsi_detect (struct scsi_host_template *);
  22 const char *atari_scsi_info (struct Scsi_Host *);
  23 int atari_scsi_reset (Scsi_Cmnd *, unsigned int);
  24 int atari_scsi_release (struct Scsi_Host *);
  25
  26 /* The values for CMD_PER_LUN and CAN_QUEUE are somehow arbitrary. Higher
  27  * values should work, too; try it! (but cmd_per_lun costs memory!) */
  28
  29 /* But there seems to be a bug somewhere that requires CAN_QUEUE to be
  30  * 2*CMD_PER_LUN. At least on a TT, no spurious timeouts seen since
  31  * changed CMD_PER_LUN... */
  32
  33 /* Note: The Falcon currently uses 8/1 setting due to unsolved problems with
  34  * cmd_per_lun != 1 */
  35
  36 #define ATARI_TT_CAN_QUEUE              16
  37 #define ATARI_TT_CMD_PER_LUN            8
  38 #define ATARI_TT_SG_TABLESIZE           SG_ALL
  39
  40 #define ATARI_FALCON_CAN_QUEUE          8
  41 #define ATARI_FALCON_CMD_PER_LUN        1
  42 #define ATARI_FALCON_SG_TABLESIZE       SG_NONE
  43
  44 #define DEFAULT_USE_TAGGED_QUEUING      0
  45
  46
  47 #define NCR5380_implementation_fields   /* none */
  48
  49 #define NCR5380_read(reg)                 atari_scsi_reg_read( reg )
  50 #define NCR5380_write(reg, value) atari_scsi_reg_write( reg, value )
  51
  52 #define NCR5380_intr atari_scsi_intr
  53 #define NCR5380_queue_command atari_scsi_queue_command
  54 #define NCR5380_abort atari_scsi_abort
  55 #define NCR5380_proc_info atari_scsi_proc_info
  56 #define NCR5380_dma_read_setup(inst,d,c) atari_scsi_dma_setup (inst, d, c, 0)
  57 #define NCR5380_dma_write_setup(inst,d,c) atari_scsi_dma_setup (inst, d, c, 1)
  58 #define NCR5380_dma_residual(inst) atari_scsi_dma_residual( inst )
  59 #define NCR5380_dma_xfer_len(i,cmd,phase) \
  60         atari_dma_xfer_len(cmd->SCp.this_residual,cmd,((phase) & SR_IO) ? 0 : 1)
  61
  62 /* former generic SCSI error handling stuff */
  63
  64 #define SCSI_ABORT_SNOOZE 0
  65 #define SCSI_ABORT_SUCCESS 1
  66 #define SCSI_ABORT_PENDING 2
  67 #define SCSI_ABORT_BUSY 3
  68 #define SCSI_ABORT_NOT_RUNNING 4
  69 #define SCSI_ABORT_ERROR 5
  70
  71 #define SCSI_RESET_SNOOZE 0
  72 #define SCSI_RESET_PUNT 1
  73 #define SCSI_RESET_SUCCESS 2
  74 #define SCSI_RESET_PENDING 3
  75 #define SCSI_RESET_WAKEUP 4
  76 #define SCSI_RESET_NOT_RUNNING 5
  77 #define SCSI_RESET_ERROR 6
  78
  79 #define SCSI_RESET_SYNCHRONOUS          0x01
  80 #define SCSI_RESET_ASYNCHRONOUS         0x02
  81 #define SCSI_RESET_SUGGEST_BUS_RESET    0x04
  82 #define SCSI_RESET_SUGGEST_HOST_RESET   0x08
  83
  84 #define SCSI_RESET_BUS_RESET 0x100
  85 #define SCSI_RESET_HOST_RESET 0x200
  86 #define SCSI_RESET_ACTION   0xff
  87
  88 /* Debugging printk definitions:
  89  *
  90  *  ARB  -> arbitration
  91  *  ASEN -> auto-sense
  92  *  DMA  -> DMA
  93  *  HSH  -> PIO handshake
  94  *  INF  -> information transfer
  95  *  INI  -> initialization
  96  *  INT  -> interrupt
  97  *  LNK  -> linked commands
  98  *  MAIN -> NCR5380_main() control flow
  99  *  NDAT -> no data-out phase
 100  *  NWR  -> no write commands
 101  *  PIO  -> PIO transfers
 102  *  PDMA -> pseudo DMA (unused on Atari)
 103  *  QU   -> queues
 104  *  RSL  -> reselections
 105  *  SEL  -> selections
 106  *  USL  -> usleep cpde (unused on Atari)
 107  *  LBS  -> last byte sent (unused on Atari)
 108  *  RSS  -> restarting of selections
 109  *  EXT  -> extended messages
 110  *  ABRT -> aborting and resetting
 111  *  TAG  -> queue tag handling
 112  *  MER  -> merging of consec. buffers
 113  *
 114  */
 115
 116 #define dprint(flg, format...)                  \
 117 ({                                              \
 118         if (NDEBUG & (flg))                     \
 119                 printk(KERN_DEBUG format);      \
 120 })
 121
 122 #define ARB_PRINTK(format, args...) \
 123         dprint(NDEBUG_ARBITRATION, format , ## args)
 124 #define ASEN_PRINTK(format, args...) \
 125         dprint(NDEBUG_AUTOSENSE, format , ## args)
 126 #define DMA_PRINTK(format, args...) \
 127         dprint(NDEBUG_DMA, format , ## args)
 128 #define HSH_PRINTK(format, args...) \
 129         dprint(NDEBUG_HANDSHAKE, format , ## args)
 130 #define INF_PRINTK(format, args...) \
 131         dprint(NDEBUG_INFORMATION, format , ## args)
 132 #define INI_PRINTK(format, args...) \
 133         dprint(NDEBUG_INIT, format , ## args)
 134 #define INT_PRINTK(format, args...) \
 135         dprint(NDEBUG_INTR, format , ## args)
 136 #define LNK_PRINTK(format, args...) \
 137         dprint(NDEBUG_LINKED, format , ## args)
 138 #define MAIN_PRINTK(format, args...) \
 139         dprint(NDEBUG_MAIN, format , ## args)
 140 #define NDAT_PRINTK(format, args...) \
 141         dprint(NDEBUG_NO_DATAOUT, format , ## args)
 142 #define NWR_PRINTK(format, args...) \
 143         dprint(NDEBUG_NO_WRITE, format , ## args)
 144 #define PIO_PRINTK(format, args...) \
 145         dprint(NDEBUG_PIO, format , ## args)
 146 #define PDMA_PRINTK(format, args...) \
 147         dprint(NDEBUG_PSEUDO_DMA, format , ## args)
 148 #define QU_PRINTK(format, args...) \
 149         dprint(NDEBUG_QUEUES, format , ## args)
 150 #define RSL_PRINTK(format, args...) \
 151         dprint(NDEBUG_RESELECTION, format , ## args)
 152 #define SEL_PRINTK(format, args...) \
 153         dprint(NDEBUG_SELECTION, format , ## args)
 154 #define USL_PRINTK(format, args...) \
 155         dprint(NDEBUG_USLEEP, format , ## args)
 156 #define LBS_PRINTK(format, args...) \
 157         dprint(NDEBUG_LAST_BYTE_SENT, format , ## args)
 158 #define RSS_PRINTK(format, args...) \
 159         dprint(NDEBUG_RESTART_SELECT, format , ## args)
 160 #define EXT_PRINTK(format, args...) \
 161         dprint(NDEBUG_EXTENDED, format , ## args)
 162 #define ABRT_PRINTK(format, args...) \
 163         dprint(NDEBUG_ABORT, format , ## args)
 164 #define TAG_PRINTK(format, args...) \
 165         dprint(NDEBUG_TAGS, format , ## args)
 166 #define MER_PRINTK(format, args...) \
 167         dprint(NDEBUG_MERGING, format , ## args)
 168
 169 /* conditional macros for NCR5380_print_{,phase,status} */
 170
 171 #define NCR_PRINT(mask) \
 172         ((NDEBUG & (mask)) ? NCR5380_print(instance) : (void)0)
 173
 174 #define NCR_PRINT_PHASE(mask) \
 175         ((NDEBUG & (mask)) ? NCR5380_print_phase(instance) : (void)0)
 176
 177 #define NCR_PRINT_STATUS(mask) \
 178         ((NDEBUG & (mask)) ? NCR5380_print_status(instance) : (void)0)
 179
 180
 181 #endif /* ndef ASM */
 182 #endif /* ATARI_SCSI_H */
 183
 184