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 /* The values for CMD_PER_LUN and CAN_QUEUE are somehow arbitrary. Higher
  22  * values should work, too; try it! (but cmd_per_lun costs memory!) */
  23
  24 /* But there seems to be a bug somewhere that requires CAN_QUEUE to be
  25  * 2*CMD_PER_LUN. At least on a TT, no spurious timeouts seen since
  26  * changed CMD_PER_LUN... */
  27
  28 /* Note: The Falcon currently uses 8/1 setting due to unsolved problems with
  29  * cmd_per_lun != 1 */
  30
  31 #define ATARI_TT_CAN_QUEUE              16
  32 #define ATARI_TT_CMD_PER_LUN            8
  33 #define ATARI_TT_SG_TABLESIZE           SG_ALL
  34
  35 #define ATARI_FALCON_CAN_QUEUE          8
  36 #define ATARI_FALCON_CMD_PER_LUN        1
  37 #define ATARI_FALCON_SG_TABLESIZE       SG_NONE
  38
  39 #define DEFAULT_USE_TAGGED_QUEUING      0
  40
  41
  42 #define NCR5380_implementation_fields   /* none */
  43
  44 #define NCR5380_read(reg)                 atari_scsi_reg_read( reg )
  45 #define NCR5380_write(reg, value) atari_scsi_reg_write( reg, value )
  46
  47 #define NCR5380_intr atari_scsi_intr
  48 #define NCR5380_queue_command atari_scsi_queue_command
  49 #define NCR5380_abort atari_scsi_abort
  50 #define NCR5380_show_info atari_scsi_show_info
  51 #define NCR5380_dma_read_setup(inst,d,c) atari_scsi_dma_setup (inst, d, c, 0)
  52 #define NCR5380_dma_write_setup(inst,d,c) atari_scsi_dma_setup (inst, d, c, 1)
  53 #define NCR5380_dma_residual(inst) atari_scsi_dma_residual( inst )
  54 #define NCR5380_dma_xfer_len(i,cmd,phase) \
  55         atari_dma_xfer_len(cmd->SCp.this_residual,cmd,((phase) & SR_IO) ? 0 : 1)
  56
  57 /* former generic SCSI error handling stuff */
  58
  59 #define SCSI_ABORT_SNOOZE 0
  60 #define SCSI_ABORT_SUCCESS 1
  61 #define SCSI_ABORT_PENDING 2
  62 #define SCSI_ABORT_BUSY 3
  63 #define SCSI_ABORT_NOT_RUNNING 4
  64 #define SCSI_ABORT_ERROR 5
  65
  66 #define SCSI_RESET_SNOOZE 0
  67 #define SCSI_RESET_PUNT 1
  68 #define SCSI_RESET_SUCCESS 2
  69 #define SCSI_RESET_PENDING 3
  70 #define SCSI_RESET_WAKEUP 4
  71 #define SCSI_RESET_NOT_RUNNING 5
  72 #define SCSI_RESET_ERROR 6
  73
  74 #define SCSI_RESET_SYNCHRONOUS          0x01
  75 #define SCSI_RESET_ASYNCHRONOUS         0x02
  76 #define SCSI_RESET_SUGGEST_BUS_RESET    0x04
  77 #define SCSI_RESET_SUGGEST_HOST_RESET   0x08
  78
  79 #define SCSI_RESET_BUS_RESET 0x100
  80 #define SCSI_RESET_HOST_RESET 0x200
  81 #define SCSI_RESET_ACTION   0xff
  82
  83 /* Debugging printk definitions:
  84  *
  85  *  ARB  -> arbitration
  86  *  ASEN -> auto-sense
  87  *  DMA  -> DMA
  88  *  HSH  -> PIO handshake
  89  *  INF  -> information transfer
  90  *  INI  -> initialization
  91  *  INT  -> interrupt
  92  *  LNK  -> linked commands
  93  *  MAIN -> NCR5380_main() control flow
  94  *  NDAT -> no data-out phase
  95  *  NWR  -> no write commands
  96  *  PIO  -> PIO transfers
  97  *  PDMA -> pseudo DMA (unused on Atari)
  98  *  QU   -> queues
  99  *  RSL  -> reselections
 100  *  SEL  -> selections
 101  *  USL  -> usleep cpde (unused on Atari)
 102  *  LBS  -> last byte sent (unused on Atari)
 103  *  RSS  -> restarting of selections
 104  *  EXT  -> extended messages
 105  *  ABRT -> aborting and resetting
 106  *  TAG  -> queue tag handling
 107  *  MER  -> merging of consec. buffers
 108  *
 109  */
 110
 111 #define dprint(flg, format...)                  \
 112 ({                                              \
 113         if (NDEBUG & (flg))                     \
 114                 printk(KERN_DEBUG format);      \
 115 })
 116
 117 #define ARB_PRINTK(format, args...) \
 118         dprint(NDEBUG_ARBITRATION, format , ## args)
 119 #define ASEN_PRINTK(format, args...) \
 120         dprint(NDEBUG_AUTOSENSE, format , ## args)
 121 #define DMA_PRINTK(format, args...) \
 122         dprint(NDEBUG_DMA, format , ## args)
 123 #define HSH_PRINTK(format, args...) \
 124         dprint(NDEBUG_HANDSHAKE, format , ## args)
 125 #define INF_PRINTK(format, args...) \
 126         dprint(NDEBUG_INFORMATION, format , ## args)
 127 #define INI_PRINTK(format, args...) \
 128         dprint(NDEBUG_INIT, format , ## args)
 129 #define INT_PRINTK(format, args...) \
 130         dprint(NDEBUG_INTR, format , ## args)
 131 #define LNK_PRINTK(format, args...) \
 132         dprint(NDEBUG_LINKED, format , ## args)
 133 #define MAIN_PRINTK(format, args...) \
 134         dprint(NDEBUG_MAIN, format , ## args)
 135 #define NDAT_PRINTK(format, args...) \
 136         dprint(NDEBUG_NO_DATAOUT, format , ## args)
 137 #define NWR_PRINTK(format, args...) \
 138         dprint(NDEBUG_NO_WRITE, format , ## args)
 139 #define PIO_PRINTK(format, args...) \
 140         dprint(NDEBUG_PIO, format , ## args)
 141 #define PDMA_PRINTK(format, args...) \
 142         dprint(NDEBUG_PSEUDO_DMA, format , ## args)
 143 #define QU_PRINTK(format, args...) \
 144         dprint(NDEBUG_QUEUES, format , ## args)
 145 #define RSL_PRINTK(format, args...) \
 146         dprint(NDEBUG_RESELECTION, format , ## args)
 147 #define SEL_PRINTK(format, args...) \
 148         dprint(NDEBUG_SELECTION, format , ## args)
 149 #define USL_PRINTK(format, args...) \
 150         dprint(NDEBUG_USLEEP, format , ## args)
 151 #define LBS_PRINTK(format, args...) \
 152         dprint(NDEBUG_LAST_BYTE_SENT, format , ## args)
 153 #define RSS_PRINTK(format, args...) \
 154         dprint(NDEBUG_RESTART_SELECT, format , ## args)
 155 #define EXT_PRINTK(format, args...) \
 156         dprint(NDEBUG_EXTENDED, format , ## args)
 157 #define ABRT_PRINTK(format, args...) \
 158         dprint(NDEBUG_ABORT, format , ## args)
 159 #define TAG_PRINTK(format, args...) \
 160         dprint(NDEBUG_TAGS, format , ## args)
 161 #define MER_PRINTK(format, args...) \
 162         dprint(NDEBUG_MERGING, format , ## args)
 163
 164 /* conditional macros for NCR5380_print_{,phase,status} */
 165
 166 #define NCR_PRINT(mask) \
 167         ((NDEBUG & (mask)) ? NCR5380_print(instance) : (void)0)
 168
 169 #define NCR_PRINT_PHASE(mask) \
 170         ((NDEBUG & (mask)) ? NCR5380_print_phase(instance) : (void)0)
 171
 172 #define NCR_PRINT_STATUS(mask) \
 173         ((NDEBUG & (mask)) ? NCR5380_print_status(instance) : (void)0)
 174
 175
 176 #endif /* ndef ASM */
 177 #endif /* ATARI_SCSI_H */
 178
 179