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