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ncr5380: Eliminate USLEEP_WAITLONG delay
[deliverable/linux.git] / drivers / scsi / g_NCR5380.c
1 /*
2 * Generic Generic NCR5380 driver
3 *
4 * Copyright 1993, Drew Eckhardt
5 * Visionary Computing
6 * (Unix and Linux consulting and custom programming)
7 * drew@colorado.edu
8 * +1 (303) 440-4894
9 *
10 * NCR53C400 extensions (c) 1994,1995,1996, Kevin Lentin
11 * K.Lentin@cs.monash.edu.au
12 *
13 * NCR53C400A extensions (c) 1996, Ingmar Baumgart
14 * ingmar@gonzo.schwaben.de
15 *
16 * DTC3181E extensions (c) 1997, Ronald van Cuijlenborg
17 * ronald.van.cuijlenborg@tip.nl or nutty@dds.nl
18 *
19 * Added ISAPNP support for DTC436 adapters,
20 * Thomas Sailer, sailer@ife.ee.ethz.ch
21 */
22
23 /*
24 * TODO : flesh out DMA support, find some one actually using this (I have
25 * a memory mapped Trantor board that works fine)
26 */
27
28 /*
29 * The card is detected and initialized in one of several ways :
30 * 1. With command line overrides - NCR5380=port,irq may be
31 * used on the LILO command line to override the defaults.
32 *
33 * 2. With the GENERIC_NCR5380_OVERRIDE compile time define. This is
34 * specified as an array of address, irq, dma, board tuples. Ie, for
35 * one board at 0x350, IRQ5, no dma, I could say
36 * -DGENERIC_NCR5380_OVERRIDE={{0xcc000, 5, DMA_NONE, BOARD_NCR5380}}
37 *
38 * -1 should be specified for no or DMA interrupt, -2 to autoprobe for an
39 * IRQ line if overridden on the command line.
40 *
41 * 3. When included as a module, with arguments passed on the command line:
42 * ncr_irq=xx the interrupt
43 * ncr_addr=xx the port or base address (for port or memory
44 * mapped, resp.)
45 * ncr_dma=xx the DMA
46 * ncr_5380=1 to set up for a NCR5380 board
47 * ncr_53c400=1 to set up for a NCR53C400 board
48 * e.g.
49 * modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_5380=1
50 * for a port mapped NCR5380 board or
51 * modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1
52 * for a memory mapped NCR53C400 board with interrupts disabled.
53 *
54 * 255 should be specified for no or DMA interrupt, 254 to autoprobe for an
55 * IRQ line if overridden on the command line.
56 *
57 */
58
59 /* settings for DTC3181E card with only Mustek scanner attached */
60 #define USLEEP_POLL msecs_to_jiffies(10)
61 #define USLEEP_SLEEP msecs_to_jiffies(200)
62
63 #define AUTOPROBE_IRQ
64
65 #ifdef CONFIG_SCSI_GENERIC_NCR53C400
66 #define PSEUDO_DMA
67 #endif
68
69 #include <asm/io.h>
70 #include <linux/signal.h>
71 #include <linux/blkdev.h>
72 #include <scsi/scsi_host.h>
73 #include "g_NCR5380.h"
74 #include "NCR5380.h"
75 #include <linux/stat.h>
76 #include <linux/init.h>
77 #include <linux/ioport.h>
78 #include <linux/isapnp.h>
79 #include <linux/delay.h>
80 #include <linux/interrupt.h>
81
82 static int ncr_irq;
83 static int ncr_dma;
84 static int ncr_addr;
85 static int ncr_5380;
86 static int ncr_53c400;
87 static int ncr_53c400a;
88 static int dtc_3181e;
89
90 static struct override {
91 NCR5380_map_type NCR5380_map_name;
92 int irq;
93 int dma;
94 int board; /* Use NCR53c400, Ricoh, etc. extensions ? */
95 } overrides
96 #ifdef GENERIC_NCR5380_OVERRIDE
97 [] __initdata = GENERIC_NCR5380_OVERRIDE;
98 #else
99 [1] __initdata = { { 0,},};
100 #endif
101
102 #define NO_OVERRIDES ARRAY_SIZE(overrides)
103
104 #ifndef MODULE
105
106 /**
107 * internal_setup - handle lilo command string override
108 * @board: BOARD_* identifier for the board
109 * @str: unused
110 * @ints: numeric parameters
111 *
112 * Do LILO command line initialization of the overrides array. Display
113 * errors when needed
114 *
115 * Locks: none
116 */
117
118 static void __init internal_setup(int board, char *str, int *ints)
119 {
120 static int commandline_current;
121 switch (board) {
122 case BOARD_NCR5380:
123 if (ints[0] != 2 && ints[0] != 3) {
124 printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n");
125 return;
126 }
127 break;
128 case BOARD_NCR53C400:
129 if (ints[0] != 2) {
130 printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n");
131 return;
132 }
133 break;
134 case BOARD_NCR53C400A:
135 if (ints[0] != 2) {
136 printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n");
137 return;
138 }
139 break;
140 case BOARD_DTC3181E:
141 if (ints[0] != 2) {
142 printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n");
143 return;
144 }
145 break;
146 }
147
148 if (commandline_current < NO_OVERRIDES) {
149 overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1];
150 overrides[commandline_current].irq = ints[2];
151 if (ints[0] == 3)
152 overrides[commandline_current].dma = ints[3];
153 else
154 overrides[commandline_current].dma = DMA_NONE;
155 overrides[commandline_current].board = board;
156 ++commandline_current;
157 }
158 }
159
160
161 /**
162 * do_NCR53C80_setup - set up entry point
163 * @str: unused
164 *
165 * Setup function invoked at boot to parse the ncr5380= command
166 * line.
167 */
168
169 static int __init do_NCR5380_setup(char *str)
170 {
171 int ints[10];
172
173 get_options(str, ARRAY_SIZE(ints), ints);
174 internal_setup(BOARD_NCR5380, str, ints);
175 return 1;
176 }
177
178 /**
179 * do_NCR53C400_setup - set up entry point
180 * @str: unused
181 * @ints: integer parameters from kernel setup code
182 *
183 * Setup function invoked at boot to parse the ncr53c400= command
184 * line.
185 */
186
187 static int __init do_NCR53C400_setup(char *str)
188 {
189 int ints[10];
190
191 get_options(str, ARRAY_SIZE(ints), ints);
192 internal_setup(BOARD_NCR53C400, str, ints);
193 return 1;
194 }
195
196 /**
197 * do_NCR53C400A_setup - set up entry point
198 * @str: unused
199 * @ints: integer parameters from kernel setup code
200 *
201 * Setup function invoked at boot to parse the ncr53c400a= command
202 * line.
203 */
204
205 static int __init do_NCR53C400A_setup(char *str)
206 {
207 int ints[10];
208
209 get_options(str, ARRAY_SIZE(ints), ints);
210 internal_setup(BOARD_NCR53C400A, str, ints);
211 return 1;
212 }
213
214 /**
215 * do_DTC3181E_setup - set up entry point
216 * @str: unused
217 * @ints: integer parameters from kernel setup code
218 *
219 * Setup function invoked at boot to parse the dtc3181e= command
220 * line.
221 */
222
223 static int __init do_DTC3181E_setup(char *str)
224 {
225 int ints[10];
226
227 get_options(str, ARRAY_SIZE(ints), ints);
228 internal_setup(BOARD_DTC3181E, str, ints);
229 return 1;
230 }
231
232 #endif
233
234 /**
235 * generic_NCR5380_detect - look for NCR5380 controllers
236 * @tpnt: the scsi template
237 *
238 * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E
239 * and DTC436(ISAPnP) controllers. If overrides have been set we use
240 * them.
241 *
242 * The caller supplied NCR5380_init function is invoked from here, before
243 * the interrupt line is taken.
244 *
245 * Locks: none
246 */
247
248 static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
249 {
250 static int current_override;
251 int count;
252 unsigned int *ports;
253 #ifndef SCSI_G_NCR5380_MEM
254 int i;
255 unsigned long region_size = 16;
256 #endif
257 static unsigned int __initdata ncr_53c400a_ports[] = {
258 0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0
259 };
260 static unsigned int __initdata dtc_3181e_ports[] = {
261 0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0
262 };
263 int flags;
264 struct Scsi_Host *instance;
265 #ifdef SCSI_G_NCR5380_MEM
266 unsigned long base;
267 void __iomem *iomem;
268 #endif
269
270 if (ncr_irq)
271 overrides[0].irq = ncr_irq;
272 if (ncr_dma)
273 overrides[0].dma = ncr_dma;
274 if (ncr_addr)
275 overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr;
276 if (ncr_5380)
277 overrides[0].board = BOARD_NCR5380;
278 else if (ncr_53c400)
279 overrides[0].board = BOARD_NCR53C400;
280 else if (ncr_53c400a)
281 overrides[0].board = BOARD_NCR53C400A;
282 else if (dtc_3181e)
283 overrides[0].board = BOARD_DTC3181E;
284 #ifndef SCSI_G_NCR5380_MEM
285 if (!current_override && isapnp_present()) {
286 struct pnp_dev *dev = NULL;
287 count = 0;
288 while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) {
289 if (count >= NO_OVERRIDES)
290 break;
291 if (pnp_device_attach(dev) < 0)
292 continue;
293 if (pnp_activate_dev(dev) < 0) {
294 printk(KERN_ERR "dtc436e probe: activate failed\n");
295 pnp_device_detach(dev);
296 continue;
297 }
298 if (!pnp_port_valid(dev, 0)) {
299 printk(KERN_ERR "dtc436e probe: no valid port\n");
300 pnp_device_detach(dev);
301 continue;
302 }
303 if (pnp_irq_valid(dev, 0))
304 overrides[count].irq = pnp_irq(dev, 0);
305 else
306 overrides[count].irq = NO_IRQ;
307 if (pnp_dma_valid(dev, 0))
308 overrides[count].dma = pnp_dma(dev, 0);
309 else
310 overrides[count].dma = DMA_NONE;
311 overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0);
312 overrides[count].board = BOARD_DTC3181E;
313 count++;
314 }
315 }
316 #endif
317 tpnt->proc_name = "g_NCR5380";
318
319 for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
320 if (!(overrides[current_override].NCR5380_map_name))
321 continue;
322
323 ports = NULL;
324 flags = 0;
325 switch (overrides[current_override].board) {
326 case BOARD_NCR5380:
327 flags = FLAG_NO_PSEUDO_DMA;
328 break;
329 case BOARD_NCR53C400:
330 #ifdef PSEUDO_DMA
331 flags = FLAG_NCR53C400;
332 #endif
333 break;
334 case BOARD_NCR53C400A:
335 flags = FLAG_NO_PSEUDO_DMA;
336 ports = ncr_53c400a_ports;
337 break;
338 case BOARD_DTC3181E:
339 flags = FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E;
340 ports = dtc_3181e_ports;
341 break;
342 }
343
344 #ifndef SCSI_G_NCR5380_MEM
345 if (ports) {
346 /* wakeup sequence for the NCR53C400A and DTC3181E */
347
348 /* Disable the adapter and look for a free io port */
349 outb(0x59, 0x779);
350 outb(0xb9, 0x379);
351 outb(0xc5, 0x379);
352 outb(0xae, 0x379);
353 outb(0xa6, 0x379);
354 outb(0x00, 0x379);
355
356 if (overrides[current_override].NCR5380_map_name != PORT_AUTO)
357 for (i = 0; ports[i]; i++) {
358 if (!request_region(ports[i], 16, "ncr53c80"))
359 continue;
360 if (overrides[current_override].NCR5380_map_name == ports[i])
361 break;
362 release_region(ports[i], 16);
363 } else
364 for (i = 0; ports[i]; i++) {
365 if (!request_region(ports[i], 16, "ncr53c80"))
366 continue;
367 if (inb(ports[i]) == 0xff)
368 break;
369 release_region(ports[i], 16);
370 }
371 if (ports[i]) {
372 /* At this point we have our region reserved */
373 outb(0x59, 0x779);
374 outb(0xb9, 0x379);
375 outb(0xc5, 0x379);
376 outb(0xae, 0x379);
377 outb(0xa6, 0x379);
378 outb(0x80 | i, 0x379); /* set io port to be used */
379 outb(0xc0, ports[i] + 9);
380 if (inb(ports[i] + 9) != 0x80)
381 continue;
382 else
383 overrides[current_override].NCR5380_map_name = ports[i];
384 } else
385 continue;
386 }
387 else
388 {
389 /* Not a 53C400A style setup - just grab */
390 if(!(request_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380")))
391 continue;
392 region_size = NCR5380_region_size;
393 }
394 #else
395 base = overrides[current_override].NCR5380_map_name;
396 if (!request_mem_region(base, NCR5380_region_size, "ncr5380"))
397 continue;
398 iomem = ioremap(base, NCR5380_region_size);
399 if (!iomem) {
400 release_mem_region(base, NCR5380_region_size);
401 continue;
402 }
403 #endif
404 instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata));
405 if (instance == NULL) {
406 #ifndef SCSI_G_NCR5380_MEM
407 release_region(overrides[current_override].NCR5380_map_name, region_size);
408 #else
409 iounmap(iomem);
410 release_mem_region(base, NCR5380_region_size);
411 #endif
412 continue;
413 }
414
415 #ifndef SCSI_G_NCR5380_MEM
416 instance->io_port = overrides[current_override].NCR5380_map_name;
417 instance->n_io_port = region_size;
418
419 /*
420 * On NCR53C400 boards, NCR5380 registers are mapped 8 past
421 * the base address.
422 */
423 if (overrides[current_override].board == BOARD_NCR53C400)
424 instance->io_port += 8;
425 #else
426 instance->base = overrides[current_override].NCR5380_map_name;
427 ((struct NCR5380_hostdata *)instance->hostdata)->iomem = iomem;
428 #endif
429
430 NCR5380_init(instance, flags);
431
432 if (overrides[current_override].board == BOARD_NCR53C400)
433 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE);
434
435 NCR5380_maybe_reset_bus(instance);
436
437 if (overrides[current_override].irq != IRQ_AUTO)
438 instance->irq = overrides[current_override].irq;
439 else
440 instance->irq = NCR5380_probe_irq(instance, 0xffff);
441
442 /* Compatibility with documented NCR5380 kernel parameters */
443 if (instance->irq == 255)
444 instance->irq = NO_IRQ;
445
446 if (instance->irq != NO_IRQ)
447 if (request_irq(instance->irq, generic_NCR5380_intr,
448 0, "NCR5380", instance)) {
449 printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq);
450 instance->irq = NO_IRQ;
451 }
452
453 if (instance->irq == NO_IRQ) {
454 printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
455 printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
456 }
457
458 ++current_override;
459 ++count;
460 }
461 return count;
462 }
463
464 /**
465 * generic_NCR5380_release_resources - free resources
466 * @instance: host adapter to clean up
467 *
468 * Free the generic interface resources from this adapter.
469 *
470 * Locks: none
471 */
472
473 static int generic_NCR5380_release_resources(struct Scsi_Host *instance)
474 {
475 if (instance->irq != NO_IRQ)
476 free_irq(instance->irq, instance);
477 NCR5380_exit(instance);
478
479 #ifndef SCSI_G_NCR5380_MEM
480 release_region(instance->io_port, instance->n_io_port);
481 #else
482 iounmap(((struct NCR5380_hostdata *)instance->hostdata)->iomem);
483 release_mem_region(instance->base, NCR5380_region_size);
484 #endif
485
486
487 return 0;
488 }
489
490 #ifdef BIOSPARAM
491 /**
492 * generic_NCR5380_biosparam
493 * @disk: disk to compute geometry for
494 * @dev: device identifier for this disk
495 * @ip: sizes to fill in
496 *
497 * Generates a BIOS / DOS compatible H-C-S mapping for the specified
498 * device / size.
499 *
500 * XXX Most SCSI boards use this mapping, I could be incorrect. Someone
501 * using hard disks on a trantor should verify that this mapping
502 * corresponds to that used by the BIOS / ASPI driver by running the linux
503 * fdisk program and matching the H_C_S coordinates to what DOS uses.
504 *
505 * Locks: none
506 */
507
508 static int
509 generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev,
510 sector_t capacity, int *ip)
511 {
512 ip[0] = 64;
513 ip[1] = 32;
514 ip[2] = capacity >> 11;
515 return 0;
516 }
517 #endif
518
519 #ifdef PSEUDO_DMA
520
521 /**
522 * NCR5380_pread - pseudo DMA read
523 * @instance: adapter to read from
524 * @dst: buffer to read into
525 * @len: buffer length
526 *
527 * Perform a pseudo DMA mode read from an NCR53C400 or equivalent
528 * controller
529 */
530
531 static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len)
532 {
533 #ifdef SCSI_G_NCR5380_MEM
534 struct NCR5380_hostdata *hostdata = shost_priv(instance);
535 #endif
536 int blocks = len / 128;
537 int start = 0;
538 int bl;
539
540 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR);
541 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
542 while (1) {
543 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
544 break;
545 }
546 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
547 printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
548 return -1;
549 }
550 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY);
551
552 #ifndef SCSI_G_NCR5380_MEM
553 {
554 int i;
555 for (i = 0; i < 128; i++)
556 dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
557 }
558 #else
559 /* implies SCSI_G_NCR5380_MEM */
560 memcpy_fromio(dst + start,
561 hostdata->iomem + NCR53C400_host_buffer, 128);
562 #endif
563 start += 128;
564 blocks--;
565 }
566
567 if (blocks) {
568 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
569 {
570 // FIXME - no timeout
571 }
572
573 #ifndef SCSI_G_NCR5380_MEM
574 {
575 int i;
576 for (i = 0; i < 128; i++)
577 dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
578 }
579 #else
580 /* implies SCSI_G_NCR5380_MEM */
581 memcpy_fromio(dst + start,
582 hostdata->iomem + NCR53C400_host_buffer, 128);
583 #endif
584 start += 128;
585 blocks--;
586 }
587
588 if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
589 printk("53C400r: no 53C80 gated irq after transfer");
590
591 #if 0
592 /*
593 * DON'T DO THIS - THEY NEVER ARRIVE!
594 */
595 printk("53C400r: Waiting for 53C80 registers\n");
596 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG)
597 ;
598 #endif
599 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER))
600 printk(KERN_ERR "53C400r: no end dma signal\n");
601
602 NCR5380_write(MODE_REG, MR_BASE);
603 NCR5380_read(RESET_PARITY_INTERRUPT_REG);
604 return 0;
605 }
606
607 /**
608 * NCR5380_write - pseudo DMA write
609 * @instance: adapter to read from
610 * @dst: buffer to read into
611 * @len: buffer length
612 *
613 * Perform a pseudo DMA mode read from an NCR53C400 or equivalent
614 * controller
615 */
616
617 static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len)
618 {
619 #ifdef SCSI_G_NCR5380_MEM
620 struct NCR5380_hostdata *hostdata = shost_priv(instance);
621 #endif
622 int blocks = len / 128;
623 int start = 0;
624 int bl;
625 int i;
626
627 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE);
628 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
629 while (1) {
630 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
631 printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
632 return -1;
633 }
634
635 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
636 break;
637 }
638 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
639 ; // FIXME - timeout
640 #ifndef SCSI_G_NCR5380_MEM
641 {
642 for (i = 0; i < 128; i++)
643 NCR5380_write(C400_HOST_BUFFER, src[start + i]);
644 }
645 #else
646 /* implies SCSI_G_NCR5380_MEM */
647 memcpy_toio(hostdata->iomem + NCR53C400_host_buffer,
648 src + start, 128);
649 #endif
650 start += 128;
651 blocks--;
652 }
653 if (blocks) {
654 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
655 ; // FIXME - no timeout
656
657 #ifndef SCSI_G_NCR5380_MEM
658 {
659 for (i = 0; i < 128; i++)
660 NCR5380_write(C400_HOST_BUFFER, src[start + i]);
661 }
662 #else
663 /* implies SCSI_G_NCR5380_MEM */
664 memcpy_toio(hostdata->iomem + NCR53C400_host_buffer,
665 src + start, 128);
666 #endif
667 start += 128;
668 blocks--;
669 }
670
671 #if 0
672 printk("53C400w: waiting for registers to be available\n");
673 THEY NEVER DO ! while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG);
674 printk("53C400w: Got em\n");
675 #endif
676
677 /* Let's wait for this instead - could be ugly */
678 /* All documentation says to check for this. Maybe my hardware is too
679 * fast. Waiting for it seems to work fine! KLL
680 */
681 while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
682 ; // FIXME - no timeout
683
684 /*
685 * I know. i is certainly != 0 here but the loop is new. See previous
686 * comment.
687 */
688 if (i) {
689 if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER))
690 printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i);
691 } else
692 printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n");
693
694 #if 0
695 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) {
696 printk(KERN_ERR "53C400w: no end dma signal\n");
697 }
698 #endif
699 while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT))
700 ; // TIMEOUT
701 return 0;
702 }
703 #endif /* PSEUDO_DMA */
704
705 /*
706 * Include the NCR5380 core code that we build our driver around
707 */
708
709 #include "NCR5380.c"
710
711 static struct scsi_host_template driver_template = {
712 .show_info = generic_NCR5380_show_info,
713 .name = "Generic NCR5380/NCR53C400 SCSI",
714 .detect = generic_NCR5380_detect,
715 .release = generic_NCR5380_release_resources,
716 .info = generic_NCR5380_info,
717 .queuecommand = generic_NCR5380_queue_command,
718 .eh_abort_handler = generic_NCR5380_abort,
719 .eh_bus_reset_handler = generic_NCR5380_bus_reset,
720 .bios_param = NCR5380_BIOSPARAM,
721 .can_queue = CAN_QUEUE,
722 .this_id = 7,
723 .sg_tablesize = SG_ALL,
724 .cmd_per_lun = CMD_PER_LUN,
725 .use_clustering = DISABLE_CLUSTERING,
726 };
727 #include <linux/module.h>
728 #include "scsi_module.c"
729
730 module_param(ncr_irq, int, 0);
731 module_param(ncr_dma, int, 0);
732 module_param(ncr_addr, int, 0);
733 module_param(ncr_5380, int, 0);
734 module_param(ncr_53c400, int, 0);
735 module_param(ncr_53c400a, int, 0);
736 module_param(dtc_3181e, int, 0);
737 MODULE_LICENSE("GPL");
738
739 #if !defined(SCSI_G_NCR5380_MEM) && defined(MODULE)
740 static struct isapnp_device_id id_table[] = {
741 {
742 ISAPNP_ANY_ID, ISAPNP_ANY_ID,
743 ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e),
744 0},
745 {0}
746 };
747
748 MODULE_DEVICE_TABLE(isapnp, id_table);
749 #endif
750
751 __setup("ncr5380=", do_NCR5380_setup);
752 __setup("ncr53c400=", do_NCR53C400_setup);
753 __setup("ncr53c400a=", do_NCR53C400A_setup);
754 __setup("dtc3181e=", do_DTC3181E_setup);
Linux kernel - Deliverables
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