linux/drivers/scsi/atari_scsi.h
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   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
 180
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