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sun3_scsi.h
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1 /*
2  * Sun3 SCSI stuff by Erik Verbruggen ([email protected])
3  *
4  * Sun3 DMA additions by Sam Creasey ([email protected])
5  *
6  * Adapted from mac_scsinew.h:
7  */
8 /*
9  * Cumana Generic NCR5380 driver defines
10  *
11  * Copyright 1993, Drew Eckhardt
12  * Visionary Computing
13  * (Unix and Linux consulting and custom programming)
14  * [email protected]
15  * +1 (303) 440-4894
16  *
17  * ALPHA RELEASE 1.
18  *
19  * For more information, please consult
20  *
21  * NCR 5380 Family
22  * SCSI Protocol Controller
23  * Databook
24  *
25  * NCR Microelectronics
26  * 1635 Aeroplaza Drive
27  * Colorado Springs, CO 80916
28  * 1+ (719) 578-3400
29  * 1+ (800) 334-5454
30  */
31 
32 /*
33  * $Log: cumana_NCR5380.h,v $
34  */
35 
36 #ifndef SUN3_NCR5380_H
37 #define SUN3_NCR5380_H
38 
39 #define SUN3SCSI_PUBLIC_RELEASE 1
40 
41 /*
42  * Int: level 2 autovector
43  * IO: type 1, base 0x00140000, 5 bits phys space: A<4..0>
44  */
45 #define IRQ_SUN3_SCSI 2
46 #define IOBASE_SUN3_SCSI 0x00140000
47 
48 #define IOBASE_SUN3_VMESCSI 0xff200000
49 
50 static int sun3scsi_abort(struct scsi_cmnd *);
51 static int sun3scsi_detect (struct scsi_host_template *);
52 static const char *sun3scsi_info (struct Scsi_Host *);
53 static int sun3scsi_bus_reset(struct scsi_cmnd *);
54 static int sun3scsi_queue_command(struct Scsi_Host *, struct scsi_cmnd *);
55 static int sun3scsi_release (struct Scsi_Host *);
56 
57 #ifndef CMD_PER_LUN
58 #define CMD_PER_LUN 2
59 #endif
60 
61 #ifndef CAN_QUEUE
62 #define CAN_QUEUE 16
63 #endif
64 
65 #ifndef SG_TABLESIZE
66 #define SG_TABLESIZE SG_NONE
67 #endif
68 
69 #ifndef MAX_TAGS
70 #define MAX_TAGS 32
71 #endif
72 
73 #ifndef USE_TAGGED_QUEUING
74 #define USE_TAGGED_QUEUING 1
75 #endif
76 
77 #include <scsi/scsicam.h>
78 
79 #ifdef SUN3_SCSI_VME
80 #define SUN3_SCSI_NAME "Sun3 NCR5380 VME SCSI"
81 #else
82 #define SUN3_SCSI_NAME "Sun3 NCR5380 SCSI"
83 #endif
84 
85 #ifndef HOSTS_C
86 
87 #define NCR5380_implementation_fields \
88  int port, ctrl
89 
90 #define NCR5380_local_declare() \
91  struct Scsi_Host *_instance
92 
93 #define NCR5380_setup(instance) \
94  _instance = instance
95 
96 #define NCR5380_read(reg) sun3scsi_read(reg)
97 #define NCR5380_write(reg, value) sun3scsi_write(reg, value)
98 
99 #define NCR5380_intr sun3scsi_intr
100 #define NCR5380_queue_command sun3scsi_queue_command
101 #define NCR5380_bus_reset sun3scsi_bus_reset
102 #define NCR5380_abort sun3scsi_abort
103 #define NCR5380_proc_info sun3scsi_proc_info
104 #define NCR5380_dma_xfer_len(i, cmd, phase) \
105  sun3scsi_dma_xfer_len(cmd->SCp.this_residual,cmd,((phase) & SR_IO) ? 0 : 1)
106 
107 #define NCR5380_dma_write_setup(instance, data, count) sun3scsi_dma_setup(data, count, 1)
108 #define NCR5380_dma_read_setup(instance, data, count) sun3scsi_dma_setup(data, count, 0)
109 #define NCR5380_dma_residual sun3scsi_dma_residual
110 
111 #define BOARD_NORMAL 0
112 #define BOARD_NCR53C400 1
113 
114 /* additional registers - mainly DMA control regs */
115 /* these start at regbase + 8 -- directly after the NCR regs */
116 struct sun3_dma_regs {
117  unsigned short dma_addr_hi; /* vme only */
118  unsigned short dma_addr_lo; /* vme only */
119  unsigned short dma_count_hi; /* vme only */
120  unsigned short dma_count_lo; /* vme only */
121  unsigned short udc_data; /* udc dma data reg (obio only) */
122  unsigned short udc_addr; /* uda dma addr reg (obio only) */
123  unsigned short fifo_data; /* fifo data reg, holds extra byte on
124  odd dma reads */
125  unsigned short fifo_count;
126  unsigned short csr; /* control/status reg */
127  unsigned short bpack_hi; /* vme only */
128  unsigned short bpack_lo; /* vme only */
129  unsigned short ivect; /* vme only */
130  unsigned short fifo_count_hi; /* vme only */
131 };
132 
133 /* ucd chip specific regs - live in dvma space */
134 struct sun3_udc_regs {
135  unsigned short rsel; /* select regs to load */
136  unsigned short addr_hi; /* high word of addr */
137  unsigned short addr_lo; /* low word */
138  unsigned short count; /* words to be xfer'd */
139  unsigned short mode_hi; /* high word of channel mode */
140  unsigned short mode_lo; /* low word of channel mode */
141 };
142 
143 /* addresses of the udc registers */
144 #define UDC_MODE 0x38
145 #define UDC_CSR 0x2e /* command/status */
146 #define UDC_CHN_HI 0x26 /* chain high word */
147 #define UDC_CHN_LO 0x22 /* chain lo word */
148 #define UDC_CURA_HI 0x1a /* cur reg A high */
149 #define UDC_CURA_LO 0x0a /* cur reg A low */
150 #define UDC_CURB_HI 0x12 /* cur reg B high */
151 #define UDC_CURB_LO 0x02 /* cur reg B low */
152 #define UDC_MODE_HI 0x56 /* mode reg high */
153 #define UDC_MODE_LO 0x52 /* mode reg low */
154 #define UDC_COUNT 0x32 /* words to xfer */
155 
156 /* some udc commands */
157 #define UDC_RESET 0
158 #define UDC_CHN_START 0xa0 /* start chain */
159 #define UDC_INT_ENABLE 0x32 /* channel 1 int on */
160 
161 /* udc mode words */
162 #define UDC_MODE_HIWORD 0x40
163 #define UDC_MODE_LSEND 0xc2
164 #define UDC_MODE_LRECV 0xd2
165 
166 /* udc reg selections */
167 #define UDC_RSEL_SEND 0x282
168 #define UDC_RSEL_RECV 0x182
169 
170 /* bits in csr reg */
171 #define CSR_DMA_ACTIVE 0x8000
172 #define CSR_DMA_CONFLICT 0x4000
173 #define CSR_DMA_BUSERR 0x2000
174 
175 #define CSR_FIFO_EMPTY 0x400 /* fifo flushed? */
176 #define CSR_SDB_INT 0x200 /* sbc interrupt pending */
177 #define CSR_DMA_INT 0x100 /* dma interrupt pending */
178 
179 #define CSR_LEFT 0xc0
180 #define CSR_LEFT_3 0xc0
181 #define CSR_LEFT_2 0x80
182 #define CSR_LEFT_1 0x40
183 #define CSR_PACK_ENABLE 0x20
184 
185 #define CSR_DMA_ENABLE 0x10
186 
187 #define CSR_SEND 0x8 /* 1 = send 0 = recv */
188 #define CSR_FIFO 0x2 /* reset fifo */
189 #define CSR_INTR 0x4 /* interrupt enable */
190 #define CSR_SCSI 0x1
191 
192 #define VME_DATA24 0x3d00
193 
194 // debugging printk's, taken from atari_scsi.h
195 /* Debugging printk definitions:
196  *
197  * ARB -> arbitration
198  * ASEN -> auto-sense
199  * DMA -> DMA
200  * HSH -> PIO handshake
201  * INF -> information transfer
202  * INI -> initialization
203  * INT -> interrupt
204  * LNK -> linked commands
205  * MAIN -> NCR5380_main() control flow
206  * NDAT -> no data-out phase
207  * NWR -> no write commands
208  * PIO -> PIO transfers
209  * PDMA -> pseudo DMA (unused on Atari)
210  * QU -> queues
211  * RSL -> reselections
212  * SEL -> selections
213  * USL -> usleep cpde (unused on Atari)
214  * LBS -> last byte sent (unused on Atari)
215  * RSS -> restarting of selections
216  * EXT -> extended messages
217  * ABRT -> aborting and resetting
218  * TAG -> queue tag handling
219  * MER -> merging of consec. buffers
220  *
221  */
222 
223 #include "NCR5380.h"
224 
225 #if NDEBUG & NDEBUG_ARBITRATION
226 #define ARB_PRINTK(format, args...) \
227  printk(KERN_DEBUG format , ## args)
228 #else
229 #define ARB_PRINTK(format, args...)
230 #endif
231 #if NDEBUG & NDEBUG_AUTOSENSE
232 #define ASEN_PRINTK(format, args...) \
233  printk(KERN_DEBUG format , ## args)
234 #else
235 #define ASEN_PRINTK(format, args...)
236 #endif
237 #if NDEBUG & NDEBUG_DMA
238 #define DMA_PRINTK(format, args...) \
239  printk(KERN_DEBUG format , ## args)
240 #else
241 #define DMA_PRINTK(format, args...)
242 #endif
243 #if NDEBUG & NDEBUG_HANDSHAKE
244 #define HSH_PRINTK(format, args...) \
245  printk(KERN_DEBUG format , ## args)
246 #else
247 #define HSH_PRINTK(format, args...)
248 #endif
249 #if NDEBUG & NDEBUG_INFORMATION
250 #define INF_PRINTK(format, args...) \
251  printk(KERN_DEBUG format , ## args)
252 #else
253 #define INF_PRINTK(format, args...)
254 #endif
255 #if NDEBUG & NDEBUG_INIT
256 #define INI_PRINTK(format, args...) \
257  printk(KERN_DEBUG format , ## args)
258 #else
259 #define INI_PRINTK(format, args...)
260 #endif
261 #if NDEBUG & NDEBUG_INTR
262 #define INT_PRINTK(format, args...) \
263  printk(KERN_DEBUG format , ## args)
264 #else
265 #define INT_PRINTK(format, args...)
266 #endif
267 #if NDEBUG & NDEBUG_LINKED
268 #define LNK_PRINTK(format, args...) \
269  printk(KERN_DEBUG format , ## args)
270 #else
271 #define LNK_PRINTK(format, args...)
272 #endif
273 #if NDEBUG & NDEBUG_MAIN
274 #define MAIN_PRINTK(format, args...) \
275  printk(KERN_DEBUG format , ## args)
276 #else
277 #define MAIN_PRINTK(format, args...)
278 #endif
279 #if NDEBUG & NDEBUG_NO_DATAOUT
280 #define NDAT_PRINTK(format, args...) \
281  printk(KERN_DEBUG format , ## args)
282 #else
283 #define NDAT_PRINTK(format, args...)
284 #endif
285 #if NDEBUG & NDEBUG_NO_WRITE
286 #define NWR_PRINTK(format, args...) \
287  printk(KERN_DEBUG format , ## args)
288 #else
289 #define NWR_PRINTK(format, args...)
290 #endif
291 #if NDEBUG & NDEBUG_PIO
292 #define PIO_PRINTK(format, args...) \
293  printk(KERN_DEBUG format , ## args)
294 #else
295 #define PIO_PRINTK(format, args...)
296 #endif
297 #if NDEBUG & NDEBUG_PSEUDO_DMA
298 #define PDMA_PRINTK(format, args...) \
299  printk(KERN_DEBUG format , ## args)
300 #else
301 #define PDMA_PRINTK(format, args...)
302 #endif
303 #if NDEBUG & NDEBUG_QUEUES
304 #define QU_PRINTK(format, args...) \
305  printk(KERN_DEBUG format , ## args)
306 #else
307 #define QU_PRINTK(format, args...)
308 #endif
309 #if NDEBUG & NDEBUG_RESELECTION
310 #define RSL_PRINTK(format, args...) \
311  printk(KERN_DEBUG format , ## args)
312 #else
313 #define RSL_PRINTK(format, args...)
314 #endif
315 #if NDEBUG & NDEBUG_SELECTION
316 #define SEL_PRINTK(format, args...) \
317  printk(KERN_DEBUG format , ## args)
318 #else
319 #define SEL_PRINTK(format, args...)
320 #endif
321 #if NDEBUG & NDEBUG_USLEEP
322 #define USL_PRINTK(format, args...) \
323  printk(KERN_DEBUG format , ## args)
324 #else
325 #define USL_PRINTK(format, args...)
326 #endif
327 #if NDEBUG & NDEBUG_LAST_BYTE_SENT
328 #define LBS_PRINTK(format, args...) \
329  printk(KERN_DEBUG format , ## args)
330 #else
331 #define LBS_PRINTK(format, args...)
332 #endif
333 #if NDEBUG & NDEBUG_RESTART_SELECT
334 #define RSS_PRINTK(format, args...) \
335  printk(KERN_DEBUG format , ## args)
336 #else
337 #define RSS_PRINTK(format, args...)
338 #endif
339 #if NDEBUG & NDEBUG_EXTENDED
340 #define EXT_PRINTK(format, args...) \
341  printk(KERN_DEBUG format , ## args)
342 #else
343 #define EXT_PRINTK(format, args...)
344 #endif
345 #if NDEBUG & NDEBUG_ABORT
346 #define ABRT_PRINTK(format, args...) \
347  printk(KERN_DEBUG format , ## args)
348 #else
349 #define ABRT_PRINTK(format, args...)
350 #endif
351 #if NDEBUG & NDEBUG_TAGS
352 #define TAG_PRINTK(format, args...) \
353  printk(KERN_DEBUG format , ## args)
354 #else
355 #define TAG_PRINTK(format, args...)
356 #endif
357 #if NDEBUG & NDEBUG_MERGING
358 #define MER_PRINTK(format, args...) \
359  printk(KERN_DEBUG format , ## args)
360 #else
361 #define MER_PRINTK(format, args...)
362 #endif
363 
364 /* conditional macros for NCR5380_print_{,phase,status} */
365 
366 #define NCR_PRINT(mask) \
367  ((NDEBUG & (mask)) ? NCR5380_print(instance) : (void)0)
368 
369 #define NCR_PRINT_PHASE(mask) \
370  ((NDEBUG & (mask)) ? NCR5380_print_phase(instance) : (void)0)
371 
372 #define NCR_PRINT_STATUS(mask) \
373  ((NDEBUG & (mask)) ? NCR5380_print_status(instance) : (void)0)
374 
375 
376 
377 #endif /* ndef HOSTS_C */
378 #endif /* SUN3_NCR5380_H */
379 
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