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
  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#endif /* ndef ASM */
  58#endif /* ATARI_SCSI_H */
  59
  60
  61