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