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1da177e4 LT |
1 | /* |
2 | * Generic Macintosh NCR5380 driver | |
3 | * | |
4 | * Copyright 1998, Michael Schmitz <mschmitz@lbl.gov> | |
5 | * | |
6 | * derived in part from: | |
7 | */ | |
8 | /* | |
9 | * Generic Generic NCR5380 driver | |
10 | * | |
11 | * Copyright 1995, Russell King | |
12 | * | |
13 | * ALPHA RELEASE 1. | |
14 | * | |
15 | * For more information, please consult | |
16 | * | |
17 | * NCR 5380 Family | |
18 | * SCSI Protocol Controller | |
19 | * Databook | |
20 | * | |
21 | * NCR Microelectronics | |
22 | * 1635 Aeroplaza Drive | |
23 | * Colorado Springs, CO 80916 | |
24 | * 1+ (719) 578-3400 | |
25 | * 1+ (800) 334-5454 | |
26 | */ | |
27 | ||
28 | /* | |
29 | * $Log: mac_NCR5380.c,v $ | |
30 | */ | |
31 | ||
32 | #include <linux/types.h> | |
33 | #include <linux/stddef.h> | |
34 | #include <linux/ctype.h> | |
35 | #include <linux/delay.h> | |
36 | ||
37 | #include <linux/module.h> | |
38 | #include <linux/signal.h> | |
1da177e4 LT |
39 | #include <linux/ioport.h> |
40 | #include <linux/init.h> | |
41 | #include <linux/blkdev.h> | |
42 | #include <linux/interrupt.h> | |
43 | ||
44 | #include <asm/io.h> | |
45 | #include <asm/irq.h> | |
46 | #include <asm/system.h> | |
47 | ||
48 | #include <asm/macintosh.h> | |
49 | #include <asm/macints.h> | |
50 | #include <asm/machw.h> | |
51 | #include <asm/mac_via.h> | |
52 | ||
53 | #include "scsi.h" | |
54 | #include <scsi/scsi_host.h> | |
55 | #include "mac_scsi.h" | |
e744fdea BH |
56 | |
57 | /* These control the behaviour of the generic 5380 core */ | |
58 | #define AUTOSENSE | |
59 | #define PSEUDO_DMA | |
60 | ||
1da177e4 LT |
61 | #include "NCR5380.h" |
62 | ||
63 | #if 0 | |
64 | #define NDEBUG (NDEBUG_INTR | NDEBUG_PSEUDO_DMA | NDEBUG_ARBITRATION | NDEBUG_SELECTION | NDEBUG_RESELECTION) | |
65 | #else | |
66 | #define NDEBUG (NDEBUG_ABORT) | |
67 | #endif | |
68 | ||
69 | #define RESET_BOOT | |
70 | #define DRIVER_SETUP | |
71 | ||
1da177e4 LT |
72 | extern void via_scsi_clear(void); |
73 | ||
74 | #ifdef RESET_BOOT | |
75 | static void mac_scsi_reset_boot(struct Scsi_Host *instance); | |
76 | #endif | |
77 | ||
78 | static int setup_called = 0; | |
79 | static int setup_can_queue = -1; | |
80 | static int setup_cmd_per_lun = -1; | |
81 | static int setup_sg_tablesize = -1; | |
82 | static int setup_use_pdma = -1; | |
83 | #ifdef SUPPORT_TAGS | |
84 | static int setup_use_tagged_queuing = -1; | |
85 | #endif | |
86 | static int setup_hostid = -1; | |
87 | ||
88 | /* Time (in jiffies) to wait after a reset; the SCSI standard calls for 250ms, | |
89 | * we usually do 0.5s to be on the safe side. But Toshiba CD-ROMs once more | |
90 | * need ten times the standard value... */ | |
91 | #define TOSHIBA_DELAY | |
92 | ||
93 | #ifdef TOSHIBA_DELAY | |
94 | #define AFTER_RESET_DELAY (5*HZ/2) | |
95 | #else | |
96 | #define AFTER_RESET_DELAY (HZ/2) | |
97 | #endif | |
98 | ||
99 | static volatile unsigned char *mac_scsi_regp = NULL; | |
100 | static volatile unsigned char *mac_scsi_drq = NULL; | |
101 | static volatile unsigned char *mac_scsi_nodrq = NULL; | |
102 | ||
103 | ||
104 | /* | |
105 | * NCR 5380 register access functions | |
106 | */ | |
107 | ||
108 | #if 0 | |
109 | /* Debug versions */ | |
110 | #define CTRL(p,v) (*ctrl = (v)) | |
111 | ||
112 | static char macscsi_read(struct Scsi_Host *instance, int reg) | |
113 | { | |
114 | int iobase = instance->io_port; | |
115 | int i; | |
116 | int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl; | |
117 | ||
118 | CTRL(iobase, 0); | |
119 | i = in_8(iobase + (reg<<4)); | |
120 | CTRL(iobase, 0x40); | |
121 | ||
122 | return i; | |
123 | } | |
124 | ||
125 | static void macscsi_write(struct Scsi_Host *instance, int reg, int value) | |
126 | { | |
127 | int iobase = instance->io_port; | |
128 | int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl; | |
129 | ||
130 | CTRL(iobase, 0); | |
131 | out_8(iobase + (reg<<4), value); | |
132 | CTRL(iobase, 0x40); | |
133 | } | |
134 | #else | |
135 | ||
136 | /* Fast versions */ | |
137 | static __inline__ char macscsi_read(struct Scsi_Host *instance, int reg) | |
138 | { | |
139 | return in_8(instance->io_port + (reg<<4)); | |
140 | } | |
141 | ||
142 | static __inline__ void macscsi_write(struct Scsi_Host *instance, int reg, int value) | |
143 | { | |
144 | out_8(instance->io_port + (reg<<4), value); | |
145 | } | |
146 | #endif | |
147 | ||
148 | ||
149 | /* | |
150 | * Function : mac_scsi_setup(char *str) | |
151 | * | |
152 | * Purpose : booter command line initialization of the overrides array, | |
153 | * | |
154 | * Inputs : str - comma delimited list of options | |
155 | * | |
156 | */ | |
157 | ||
158 | static int __init mac_scsi_setup(char *str) { | |
159 | #ifdef DRIVER_SETUP | |
160 | int ints[7]; | |
161 | ||
162 | (void)get_options( str, ARRAY_SIZE(ints), ints); | |
163 | ||
164 | if (setup_called++ || ints[0] < 1 || ints[0] > 6) { | |
165 | printk(KERN_WARNING "scsi: <mac5380>" | |
166 | " Usage: mac5380=<can_queue>[,<cmd_per_lun>,<sg_tablesize>,<hostid>,<use_tags>,<use_pdma>]\n"); | |
167 | printk(KERN_ALERT "scsi: <mac5380> Bad Penguin parameters?\n"); | |
168 | return 0; | |
169 | } | |
170 | ||
171 | if (ints[0] >= 1) { | |
172 | if (ints[1] > 0) | |
173 | /* no limits on this, just > 0 */ | |
174 | setup_can_queue = ints[1]; | |
175 | } | |
176 | if (ints[0] >= 2) { | |
177 | if (ints[2] > 0) | |
178 | setup_cmd_per_lun = ints[2]; | |
179 | } | |
180 | if (ints[0] >= 3) { | |
181 | if (ints[3] >= 0) { | |
182 | setup_sg_tablesize = ints[3]; | |
183 | /* Must be <= SG_ALL (255) */ | |
184 | if (setup_sg_tablesize > SG_ALL) | |
185 | setup_sg_tablesize = SG_ALL; | |
186 | } | |
187 | } | |
188 | if (ints[0] >= 4) { | |
189 | /* Must be between 0 and 7 */ | |
190 | if (ints[4] >= 0 && ints[4] <= 7) | |
191 | setup_hostid = ints[4]; | |
192 | else if (ints[4] > 7) | |
193 | printk(KERN_WARNING "mac_scsi_setup: invalid host ID %d !\n", ints[4] ); | |
194 | } | |
195 | #ifdef SUPPORT_TAGS | |
196 | if (ints[0] >= 5) { | |
197 | if (ints[5] >= 0) | |
198 | setup_use_tagged_queuing = !!ints[5]; | |
199 | } | |
200 | ||
201 | if (ints[0] == 6) { | |
202 | if (ints[6] >= 0) | |
203 | setup_use_pdma = ints[6]; | |
204 | } | |
205 | #else | |
206 | if (ints[0] == 5) { | |
207 | if (ints[5] >= 0) | |
208 | setup_use_pdma = ints[5]; | |
209 | } | |
210 | #endif /* SUPPORT_TAGS */ | |
211 | ||
212 | #endif /* DRIVER_SETUP */ | |
213 | return 1; | |
214 | } | |
215 | ||
216 | __setup("mac5380=", mac_scsi_setup); | |
217 | ||
218 | /* | |
219 | * If you want to find the instance with (k)gdb ... | |
220 | */ | |
221 | #if NDEBUG | |
222 | static struct Scsi_Host *default_instance; | |
223 | #endif | |
224 | ||
225 | /* | |
d0be4a7d | 226 | * Function : int macscsi_detect(struct scsi_host_template * tpnt) |
1da177e4 LT |
227 | * |
228 | * Purpose : initializes mac NCR5380 driver based on the | |
229 | * command line / compile time port and irq definitions. | |
230 | * | |
231 | * Inputs : tpnt - template for this SCSI adapter. | |
232 | * | |
233 | * Returns : 1 if a host adapter was found, 0 if not. | |
234 | * | |
235 | */ | |
236 | ||
d0be4a7d | 237 | int macscsi_detect(struct scsi_host_template * tpnt) |
1da177e4 LT |
238 | { |
239 | static int called = 0; | |
240 | int flags = 0; | |
241 | struct Scsi_Host *instance; | |
242 | ||
243 | if (!MACH_IS_MAC || called) | |
244 | return( 0 ); | |
245 | ||
246 | if (macintosh_config->scsi_type != MAC_SCSI_OLD) | |
247 | return( 0 ); | |
248 | ||
249 | /* setup variables */ | |
250 | tpnt->can_queue = | |
251 | (setup_can_queue > 0) ? setup_can_queue : CAN_QUEUE; | |
252 | tpnt->cmd_per_lun = | |
253 | (setup_cmd_per_lun > 0) ? setup_cmd_per_lun : CMD_PER_LUN; | |
254 | tpnt->sg_tablesize = | |
255 | (setup_sg_tablesize >= 0) ? setup_sg_tablesize : SG_TABLESIZE; | |
256 | ||
257 | if (setup_hostid >= 0) | |
258 | tpnt->this_id = setup_hostid; | |
259 | else { | |
260 | /* use 7 as default */ | |
261 | tpnt->this_id = 7; | |
262 | } | |
263 | ||
264 | #ifdef SUPPORT_TAGS | |
265 | if (setup_use_tagged_queuing < 0) | |
266 | setup_use_tagged_queuing = USE_TAGGED_QUEUING; | |
267 | #endif | |
268 | ||
269 | /* Once we support multiple 5380s (e.g. DuoDock) we'll do | |
270 | something different here */ | |
271 | instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata)); | |
272 | #if NDEBUG | |
273 | default_instance = instance; | |
274 | #endif | |
275 | ||
276 | if (macintosh_config->ident == MAC_MODEL_IIFX) { | |
277 | mac_scsi_regp = via1+0x8000; | |
278 | mac_scsi_drq = via1+0xE000; | |
279 | mac_scsi_nodrq = via1+0xC000; | |
280 | /* The IIFX should be able to do true DMA, but pseudo-dma doesn't work */ | |
281 | flags = FLAG_NO_PSEUDO_DMA; | |
282 | } else { | |
283 | mac_scsi_regp = via1+0x10000; | |
284 | mac_scsi_drq = via1+0x6000; | |
285 | mac_scsi_nodrq = via1+0x12000; | |
286 | } | |
287 | ||
288 | if (! setup_use_pdma) | |
289 | flags = FLAG_NO_PSEUDO_DMA; | |
290 | ||
291 | instance->io_port = (unsigned long) mac_scsi_regp; | |
292 | instance->irq = IRQ_MAC_SCSI; | |
293 | ||
294 | #ifdef RESET_BOOT | |
295 | mac_scsi_reset_boot(instance); | |
296 | #endif | |
297 | ||
298 | NCR5380_init(instance, flags); | |
299 | ||
300 | instance->n_io_port = 255; | |
301 | ||
302 | ((struct NCR5380_hostdata *)instance->hostdata)->ctrl = 0; | |
303 | ||
304 | if (instance->irq != SCSI_IRQ_NONE) | |
305 | if (request_irq(instance->irq, NCR5380_intr, IRQ_FLG_SLOW, | |
1e641664 | 306 | "ncr5380", instance)) { |
1da177e4 LT |
307 | printk(KERN_WARNING "scsi%d: IRQ%d not free, interrupts disabled\n", |
308 | instance->host_no, instance->irq); | |
309 | instance->irq = SCSI_IRQ_NONE; | |
310 | } | |
311 | ||
312 | printk(KERN_INFO "scsi%d: generic 5380 at port %lX irq", instance->host_no, instance->io_port); | |
313 | if (instance->irq == SCSI_IRQ_NONE) | |
314 | printk (KERN_INFO "s disabled"); | |
315 | else | |
316 | printk (KERN_INFO " %d", instance->irq); | |
317 | printk(KERN_INFO " options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", | |
318 | instance->can_queue, instance->cmd_per_lun, MACSCSI_PUBLIC_RELEASE); | |
319 | printk(KERN_INFO "\nscsi%d:", instance->host_no); | |
320 | NCR5380_print_options(instance); | |
321 | printk("\n"); | |
322 | called = 1; | |
323 | return 1; | |
324 | } | |
325 | ||
326 | int macscsi_release (struct Scsi_Host *shpnt) | |
327 | { | |
328 | if (shpnt->irq != SCSI_IRQ_NONE) | |
1e641664 | 329 | free_irq(shpnt->irq, shpnt); |
1da177e4 LT |
330 | NCR5380_exit(shpnt); |
331 | ||
332 | return 0; | |
333 | } | |
334 | ||
335 | #ifdef RESET_BOOT | |
336 | /* | |
337 | * Our 'bus reset on boot' function | |
338 | */ | |
339 | ||
340 | static void mac_scsi_reset_boot(struct Scsi_Host *instance) | |
341 | { | |
342 | unsigned long end; | |
343 | ||
344 | NCR5380_local_declare(); | |
345 | NCR5380_setup(instance); | |
346 | ||
347 | /* | |
348 | * Do a SCSI reset to clean up the bus during initialization. No messing | |
349 | * with the queues, interrupts, or locks necessary here. | |
350 | */ | |
351 | ||
352 | printk(KERN_INFO "Macintosh SCSI: resetting the SCSI bus..." ); | |
353 | ||
354 | /* switch off SCSI IRQ - catch an interrupt without IRQ bit set else */ | |
9c5f4afd | 355 | disable_irq(IRQ_MAC_SCSI); |
1da177e4 LT |
356 | |
357 | /* get in phase */ | |
358 | NCR5380_write( TARGET_COMMAND_REG, | |
359 | PHASE_SR_TO_TCR( NCR5380_read(STATUS_REG) )); | |
360 | ||
361 | /* assert RST */ | |
362 | NCR5380_write( INITIATOR_COMMAND_REG, ICR_BASE | ICR_ASSERT_RST ); | |
363 | /* The min. reset hold time is 25us, so 40us should be enough */ | |
364 | udelay( 50 ); | |
365 | /* reset RST and interrupt */ | |
366 | NCR5380_write( INITIATOR_COMMAND_REG, ICR_BASE ); | |
367 | NCR5380_read( RESET_PARITY_INTERRUPT_REG ); | |
368 | ||
369 | for( end = jiffies + AFTER_RESET_DELAY; time_before(jiffies, end); ) | |
370 | barrier(); | |
371 | ||
372 | /* switch on SCSI IRQ again */ | |
9c5f4afd | 373 | enable_irq(IRQ_MAC_SCSI); |
1da177e4 LT |
374 | |
375 | printk(KERN_INFO " done\n" ); | |
376 | } | |
377 | #endif | |
378 | ||
379 | const char * macscsi_info (struct Scsi_Host *spnt) { | |
380 | return ""; | |
381 | } | |
382 | ||
383 | /* | |
384 | Pseudo-DMA: (Ove Edlund) | |
385 | The code attempts to catch bus errors that occur if one for example | |
386 | "trips over the cable". | |
387 | XXX: Since bus errors in the PDMA routines never happen on my | |
388 | computer, the bus error code is untested. | |
389 | If the code works as intended, a bus error results in Pseudo-DMA | |
390 | beeing disabled, meaning that the driver switches to slow handshake. | |
391 | If bus errors are NOT extremely rare, this has to be changed. | |
392 | */ | |
393 | ||
394 | #define CP_IO_TO_MEM(s,d,len) \ | |
395 | __asm__ __volatile__ \ | |
396 | (" cmp.w #4,%2\n" \ | |
397 | " bls 8f\n" \ | |
398 | " move.w %1,%%d0\n" \ | |
399 | " neg.b %%d0\n" \ | |
400 | " and.w #3,%%d0\n" \ | |
401 | " sub.w %%d0,%2\n" \ | |
402 | " bra 2f\n" \ | |
403 | " 1: move.b (%0),(%1)+\n" \ | |
404 | " 2: dbf %%d0,1b\n" \ | |
405 | " move.w %2,%%d0\n" \ | |
406 | " lsr.w #5,%%d0\n" \ | |
407 | " bra 4f\n" \ | |
408 | " 3: move.l (%0),(%1)+\n" \ | |
409 | "31: move.l (%0),(%1)+\n" \ | |
410 | "32: move.l (%0),(%1)+\n" \ | |
411 | "33: move.l (%0),(%1)+\n" \ | |
412 | "34: move.l (%0),(%1)+\n" \ | |
413 | "35: move.l (%0),(%1)+\n" \ | |
414 | "36: move.l (%0),(%1)+\n" \ | |
415 | "37: move.l (%0),(%1)+\n" \ | |
416 | " 4: dbf %%d0,3b\n" \ | |
417 | " move.w %2,%%d0\n" \ | |
418 | " lsr.w #2,%%d0\n" \ | |
419 | " and.w #7,%%d0\n" \ | |
420 | " bra 6f\n" \ | |
421 | " 5: move.l (%0),(%1)+\n" \ | |
422 | " 6: dbf %%d0,5b\n" \ | |
423 | " and.w #3,%2\n" \ | |
424 | " bra 8f\n" \ | |
425 | " 7: move.b (%0),(%1)+\n" \ | |
426 | " 8: dbf %2,7b\n" \ | |
427 | " moveq.l #0, %2\n" \ | |
428 | " 9: \n" \ | |
429 | ".section .fixup,\"ax\"\n" \ | |
430 | " .even\n" \ | |
431 | "90: moveq.l #1, %2\n" \ | |
432 | " jra 9b\n" \ | |
433 | ".previous\n" \ | |
434 | ".section __ex_table,\"a\"\n" \ | |
435 | " .align 4\n" \ | |
436 | " .long 1b,90b\n" \ | |
437 | " .long 3b,90b\n" \ | |
438 | " .long 31b,90b\n" \ | |
439 | " .long 32b,90b\n" \ | |
440 | " .long 33b,90b\n" \ | |
441 | " .long 34b,90b\n" \ | |
442 | " .long 35b,90b\n" \ | |
443 | " .long 36b,90b\n" \ | |
444 | " .long 37b,90b\n" \ | |
445 | " .long 5b,90b\n" \ | |
446 | " .long 7b,90b\n" \ | |
447 | ".previous" \ | |
448 | : "=a"(s), "=a"(d), "=d"(len) \ | |
449 | : "0"(s), "1"(d), "2"(len) \ | |
450 | : "d0") | |
451 | ||
452 | ||
453 | static int macscsi_pread (struct Scsi_Host *instance, | |
454 | unsigned char *dst, int len) | |
455 | { | |
456 | unsigned char *d; | |
457 | volatile unsigned char *s; | |
458 | ||
459 | NCR5380_local_declare(); | |
460 | NCR5380_setup(instance); | |
461 | ||
462 | s = mac_scsi_drq+0x60; | |
463 | d = dst; | |
464 | ||
465 | /* These conditions are derived from MacOS */ | |
466 | ||
467 | while (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_DRQ) | |
468 | && !(NCR5380_read(STATUS_REG) & SR_REQ)) | |
469 | ; | |
470 | if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_DRQ) | |
471 | && (NCR5380_read(BUS_AND_STATUS_REG) & BASR_PHASE_MATCH)) { | |
472 | printk(KERN_ERR "Error in macscsi_pread\n"); | |
473 | return -1; | |
474 | } | |
475 | ||
476 | CP_IO_TO_MEM(s, d, len); | |
477 | ||
478 | if (len != 0) { | |
479 | printk(KERN_NOTICE "Bus error in macscsi_pread\n"); | |
480 | return -1; | |
481 | } | |
482 | ||
483 | return 0; | |
484 | } | |
485 | ||
486 | ||
487 | #define CP_MEM_TO_IO(s,d,len) \ | |
488 | __asm__ __volatile__ \ | |
489 | (" cmp.w #4,%2\n" \ | |
490 | " bls 8f\n" \ | |
491 | " move.w %0,%%d0\n" \ | |
492 | " neg.b %%d0\n" \ | |
493 | " and.w #3,%%d0\n" \ | |
494 | " sub.w %%d0,%2\n" \ | |
495 | " bra 2f\n" \ | |
496 | " 1: move.b (%0)+,(%1)\n" \ | |
497 | " 2: dbf %%d0,1b\n" \ | |
498 | " move.w %2,%%d0\n" \ | |
499 | " lsr.w #5,%%d0\n" \ | |
500 | " bra 4f\n" \ | |
501 | " 3: move.l (%0)+,(%1)\n" \ | |
502 | "31: move.l (%0)+,(%1)\n" \ | |
503 | "32: move.l (%0)+,(%1)\n" \ | |
504 | "33: move.l (%0)+,(%1)\n" \ | |
505 | "34: move.l (%0)+,(%1)\n" \ | |
506 | "35: move.l (%0)+,(%1)\n" \ | |
507 | "36: move.l (%0)+,(%1)\n" \ | |
508 | "37: move.l (%0)+,(%1)\n" \ | |
509 | " 4: dbf %%d0,3b\n" \ | |
510 | " move.w %2,%%d0\n" \ | |
511 | " lsr.w #2,%%d0\n" \ | |
512 | " and.w #7,%%d0\n" \ | |
513 | " bra 6f\n" \ | |
514 | " 5: move.l (%0)+,(%1)\n" \ | |
515 | " 6: dbf %%d0,5b\n" \ | |
516 | " and.w #3,%2\n" \ | |
517 | " bra 8f\n" \ | |
518 | " 7: move.b (%0)+,(%1)\n" \ | |
519 | " 8: dbf %2,7b\n" \ | |
520 | " moveq.l #0, %2\n" \ | |
521 | " 9: \n" \ | |
522 | ".section .fixup,\"ax\"\n" \ | |
523 | " .even\n" \ | |
524 | "90: moveq.l #1, %2\n" \ | |
525 | " jra 9b\n" \ | |
526 | ".previous\n" \ | |
527 | ".section __ex_table,\"a\"\n" \ | |
528 | " .align 4\n" \ | |
529 | " .long 1b,90b\n" \ | |
530 | " .long 3b,90b\n" \ | |
531 | " .long 31b,90b\n" \ | |
532 | " .long 32b,90b\n" \ | |
533 | " .long 33b,90b\n" \ | |
534 | " .long 34b,90b\n" \ | |
535 | " .long 35b,90b\n" \ | |
536 | " .long 36b,90b\n" \ | |
537 | " .long 37b,90b\n" \ | |
538 | " .long 5b,90b\n" \ | |
539 | " .long 7b,90b\n" \ | |
540 | ".previous" \ | |
541 | : "=a"(s), "=a"(d), "=d"(len) \ | |
542 | : "0"(s), "1"(d), "2"(len) \ | |
543 | : "d0") | |
544 | ||
545 | static int macscsi_pwrite (struct Scsi_Host *instance, | |
546 | unsigned char *src, int len) | |
547 | { | |
548 | unsigned char *s; | |
549 | volatile unsigned char *d; | |
550 | ||
551 | NCR5380_local_declare(); | |
552 | NCR5380_setup(instance); | |
553 | ||
554 | s = src; | |
555 | d = mac_scsi_drq; | |
556 | ||
557 | /* These conditions are derived from MacOS */ | |
558 | ||
559 | while (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_DRQ) | |
560 | && (!(NCR5380_read(STATUS_REG) & SR_REQ) | |
561 | || (NCR5380_read(BUS_AND_STATUS_REG) & BASR_PHASE_MATCH))) | |
562 | ; | |
563 | if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_DRQ)) { | |
564 | printk(KERN_ERR "Error in macscsi_pwrite\n"); | |
565 | return -1; | |
566 | } | |
567 | ||
568 | CP_MEM_TO_IO(s, d, len); | |
569 | ||
570 | if (len != 0) { | |
571 | printk(KERN_NOTICE "Bus error in macscsi_pwrite\n"); | |
572 | return -1; | |
573 | } | |
574 | ||
575 | return 0; | |
576 | } | |
577 | ||
578 | ||
1da177e4 LT |
579 | #include "NCR5380.c" |
580 | ||
d0be4a7d | 581 | static struct scsi_host_template driver_template = { |
1da177e4 LT |
582 | .proc_name = "Mac5380", |
583 | .proc_info = macscsi_proc_info, | |
584 | .name = "Macintosh NCR5380 SCSI", | |
585 | .detect = macscsi_detect, | |
586 | .release = macscsi_release, | |
587 | .info = macscsi_info, | |
588 | .queuecommand = macscsi_queue_command, | |
589 | .eh_abort_handler = macscsi_abort, | |
590 | .eh_bus_reset_handler = macscsi_bus_reset, | |
1da177e4 LT |
591 | .can_queue = CAN_QUEUE, |
592 | .this_id = 7, | |
593 | .sg_tablesize = SG_ALL, | |
594 | .cmd_per_lun = CMD_PER_LUN, | |
595 | .unchecked_isa_dma = 0, | |
596 | .use_clustering = DISABLE_CLUSTERING | |
597 | }; | |
598 | ||
599 | ||
600 | #include "scsi_module.c" |