LXR linux/drivers/scsi/atari

   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
  21int atari_scsi_detect (struct scsi_host_template *);
  22const char *atari_scsi_info (struct Scsi_Host *);
  23int atari_scsi_reset (Scsi_Cmnd *, unsigned int);
  24int 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
 185