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