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 int atari_scsi_detect (struct scsi_host_template *);
22 const char *atari_scsi_info (struct Scsi_Host *);
23 int atari_scsi_reset (Scsi_Cmnd *, unsigned int);
24 int 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
185
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