summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/atari_scsi.h
blob: efadb8d567c255a443f030c940a2b322d7d2ced2 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
/*
 * atari_scsi.h -- Header file for the Atari native SCSI driver
 *
 * Copyright 1994 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de>
 *
 * (Loosely based on the work of Robert De Vries' team)
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file COPYING in the main directory of this archive
 * for more details.
 *
 */


#ifndef ATARI_SCSI_H
#define ATARI_SCSI_H

/* (I_HAVE_OVERRUNS stuff removed) */

#ifndef ASM
int atari_scsi_detect (struct scsi_host_template *);
const char *atari_scsi_info (struct Scsi_Host *);
int atari_scsi_reset (Scsi_Cmnd *, unsigned int);
int atari_scsi_release (struct Scsi_Host *);

/* The values for CMD_PER_LUN and CAN_QUEUE are somehow arbitrary. Higher
 * values should work, too; try it! (but cmd_per_lun costs memory!) */

/* But there seems to be a bug somewhere that requires CAN_QUEUE to be
 * 2*CMD_PER_LUN. At least on a TT, no spurious timeouts seen since
 * changed CMD_PER_LUN... */

/* Note: The Falcon currently uses 8/1 setting due to unsolved problems with
 * cmd_per_lun != 1 */

#define ATARI_TT_CAN_QUEUE		16
#define ATARI_TT_CMD_PER_LUN		8
#define ATARI_TT_SG_TABLESIZE		SG_ALL

#define ATARI_FALCON_CAN_QUEUE		8
#define ATARI_FALCON_CMD_PER_LUN	1
#define ATARI_FALCON_SG_TABLESIZE	SG_NONE

#define	DEFAULT_USE_TAGGED_QUEUING	0


#define	NCR5380_implementation_fields	/* none */

#define NCR5380_read(reg)		  atari_scsi_reg_read( reg )
#define NCR5380_write(reg, value) atari_scsi_reg_write( reg, value )

#define NCR5380_intr atari_scsi_intr
#define NCR5380_queue_command atari_scsi_queue_command
#define NCR5380_abort atari_scsi_abort
#define NCR5380_proc_info atari_scsi_proc_info
#define NCR5380_dma_read_setup(inst,d,c) atari_scsi_dma_setup (inst, d, c, 0)
#define NCR5380_dma_write_setup(inst,d,c) atari_scsi_dma_setup (inst, d, c, 1)
#define NCR5380_dma_residual(inst) atari_scsi_dma_residual( inst )
#define	NCR5380_dma_xfer_len(i,cmd,phase) \
	atari_dma_xfer_len(cmd->SCp.this_residual,cmd,((phase) & SR_IO) ? 0 : 1)

/* former generic SCSI error handling stuff */

#define SCSI_ABORT_SNOOZE 0
#define SCSI_ABORT_SUCCESS 1
#define SCSI_ABORT_PENDING 2
#define SCSI_ABORT_BUSY 3
#define SCSI_ABORT_NOT_RUNNING 4
#define SCSI_ABORT_ERROR 5

#define SCSI_RESET_SNOOZE 0
#define SCSI_RESET_PUNT 1
#define SCSI_RESET_SUCCESS 2
#define SCSI_RESET_PENDING 3
#define SCSI_RESET_WAKEUP 4
#define SCSI_RESET_NOT_RUNNING 5
#define SCSI_RESET_ERROR 6

#define SCSI_RESET_SYNCHRONOUS		0x01
#define SCSI_RESET_ASYNCHRONOUS		0x02
#define SCSI_RESET_SUGGEST_BUS_RESET	0x04
#define SCSI_RESET_SUGGEST_HOST_RESET	0x08

#define SCSI_RESET_BUS_RESET 0x100
#define SCSI_RESET_HOST_RESET 0x200
#define SCSI_RESET_ACTION   0xff

/* Debugging printk definitions:
 *
 *  ARB  -> arbitration
 *  ASEN -> auto-sense
 *  DMA  -> DMA
 *  HSH  -> PIO handshake
 *  INF  -> information transfer
 *  INI  -> initialization
 *  INT  -> interrupt
 *  LNK  -> linked commands
 *  MAIN -> NCR5380_main() control flow
 *  NDAT -> no data-out phase
 *  NWR  -> no write commands
 *  PIO  -> PIO transfers
 *  PDMA -> pseudo DMA (unused on Atari)
 *  QU   -> queues
 *  RSL  -> reselections
 *  SEL  -> selections
 *  USL  -> usleep cpde (unused on Atari)
 *  LBS  -> last byte sent (unused on Atari)
 *  RSS  -> restarting of selections
 *  EXT  -> extended messages
 *  ABRT -> aborting and resetting
 *  TAG  -> queue tag handling
 *  MER  -> merging of consec. buffers
 *
 */

#define dprint(flg, format...)			\
({						\
	if (NDEBUG & (flg))			\
		printk(KERN_DEBUG format);	\
})

#define ARB_PRINTK(format, args...) \
	dprint(NDEBUG_ARBITRATION, format , ## args)
#define ASEN_PRINTK(format, args...) \
	dprint(NDEBUG_AUTOSENSE, format , ## args)
#define DMA_PRINTK(format, args...) \
	dprint(NDEBUG_DMA, format , ## args)
#define HSH_PRINTK(format, args...) \
	dprint(NDEBUG_HANDSHAKE, format , ## args)
#define INF_PRINTK(format, args...) \
	dprint(NDEBUG_INFORMATION, format , ## args)
#define INI_PRINTK(format, args...) \
	dprint(NDEBUG_INIT, format , ## args)
#define INT_PRINTK(format, args...) \
	dprint(NDEBUG_INTR, format , ## args)
#define LNK_PRINTK(format, args...) \
	dprint(NDEBUG_LINKED, format , ## args)
#define MAIN_PRINTK(format, args...) \
	dprint(NDEBUG_MAIN, format , ## args)
#define NDAT_PRINTK(format, args...) \
	dprint(NDEBUG_NO_DATAOUT, format , ## args)
#define NWR_PRINTK(format, args...) \
	dprint(NDEBUG_NO_WRITE, format , ## args)
#define PIO_PRINTK(format, args...) \
	dprint(NDEBUG_PIO, format , ## args)
#define PDMA_PRINTK(format, args...) \
	dprint(NDEBUG_PSEUDO_DMA, format , ## args)
#define QU_PRINTK(format, args...) \
	dprint(NDEBUG_QUEUES, format , ## args)
#define RSL_PRINTK(format, args...) \
	dprint(NDEBUG_RESELECTION, format , ## args)
#define SEL_PRINTK(format, args...) \
	dprint(NDEBUG_SELECTION, format , ## args)
#define USL_PRINTK(format, args...) \
	dprint(NDEBUG_USLEEP, format , ## args)
#define LBS_PRINTK(format, args...) \
	dprint(NDEBUG_LAST_BYTE_SENT, format , ## args)
#define RSS_PRINTK(format, args...) \
	dprint(NDEBUG_RESTART_SELECT, format , ## args)
#define EXT_PRINTK(format, args...) \
	dprint(NDEBUG_EXTENDED, format , ## args)
#define ABRT_PRINTK(format, args...) \
	dprint(NDEBUG_ABORT, format , ## args)
#define TAG_PRINTK(format, args...) \
	dprint(NDEBUG_TAGS, format , ## args)
#define MER_PRINTK(format, args...) \
	dprint(NDEBUG_MERGING, format , ## args)

/* conditional macros for NCR5380_print_{,phase,status} */

#define NCR_PRINT(mask)	\
	((NDEBUG & (mask)) ? NCR5380_print(instance) : (void)0)

#define NCR_PRINT_PHASE(mask) \
	((NDEBUG & (mask)) ? NCR5380_print_phase(instance) : (void)0)

#define NCR_PRINT_STATUS(mask) \
	((NDEBUG & (mask)) ? NCR5380_print_status(instance) : (void)0)


#endif /* ndef ASM */
#endif /* ATARI_SCSI_H */