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-rw-r--r--drivers/scsi/g_NCR5380.c947
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diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c
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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 * ALPHA RELEASE 1.
23 *
24 * For more information, please consult
25 *
26 * NCR 5380 Family
27 * SCSI Protocol Controller
28 * Databook
29 *
30 * NCR Microelectronics
31 * 1635 Aeroplaza Drive
32 * Colorado Springs, CO 80916
33 * 1+ (719) 578-3400
34 * 1+ (800) 334-5454
35 */
36
37/*
38 * TODO : flesh out DMA support, find some one actually using this (I have
39 * a memory mapped Trantor board that works fine)
40 */
41
42/*
43 * Options :
44 *
45 * PARITY - enable parity checking. Not supported.
46 *
47 * SCSI2 - enable support for SCSI-II tagged queueing. Untested.
48 *
49 * USLEEP - enable support for devices that don't disconnect. Untested.
50 *
51 * The card is detected and initialized in one of several ways :
52 * 1. With command line overrides - NCR5380=port,irq may be
53 * used on the LILO command line to override the defaults.
54 *
55 * 2. With the GENERIC_NCR5380_OVERRIDE compile time define. This is
56 * specified as an array of address, irq, dma, board tuples. Ie, for
57 * one board at 0x350, IRQ5, no dma, I could say
58 * -DGENERIC_NCR5380_OVERRIDE={{0xcc000, 5, DMA_NONE, BOARD_NCR5380}}
59 *
60 * -1 should be specified for no or DMA interrupt, -2 to autoprobe for an
61 * IRQ line if overridden on the command line.
62 *
63 * 3. When included as a module, with arguments passed on the command line:
64 * ncr_irq=xx the interrupt
65 * ncr_addr=xx the port or base address (for port or memory
66 * mapped, resp.)
67 * ncr_dma=xx the DMA
68 * ncr_5380=1 to set up for a NCR5380 board
69 * ncr_53c400=1 to set up for a NCR53C400 board
70 * e.g.
71 * modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_5380=1
72 * for a port mapped NCR5380 board or
73 * modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1
74 * for a memory mapped NCR53C400 board with interrupts disabled.
75 *
76 * 255 should be specified for no or DMA interrupt, 254 to autoprobe for an
77 * IRQ line if overridden on the command line.
78 *
79 */
80
81/*
82 * $Log: generic_NCR5380.c,v $
83 */
84
85/* settings for DTC3181E card with only Mustek scanner attached */
86#define USLEEP
87#define USLEEP_POLL 1
88#define USLEEP_SLEEP 20
89#define USLEEP_WAITLONG 500
90
91#define AUTOPROBE_IRQ
92#define AUTOSENSE
93
94#include <linux/config.h>
95
96#ifdef CONFIG_SCSI_GENERIC_NCR53C400
97#define NCR53C400_PSEUDO_DMA 1
98#define PSEUDO_DMA
99#define NCR53C400
100#define NCR5380_STATS
101#undef NCR5380_STAT_LIMIT
102#endif
103
104#include <asm/system.h>
105#include <asm/io.h>
106#include <linux/signal.h>
107#include <linux/sched.h>
108#include <linux/blkdev.h>
109#include "scsi.h"
110#include <scsi/scsi_host.h>
111#include "g_NCR5380.h"
112#include "NCR5380.h"
113#include <linux/stat.h>
114#include <linux/init.h>
115#include <linux/ioport.h>
116#include <linux/isapnp.h>
117#include <linux/delay.h>
118#include <linux/interrupt.h>
119
120#define NCR_NOT_SET 0
121static int ncr_irq = NCR_NOT_SET;
122static int ncr_dma = NCR_NOT_SET;
123static int ncr_addr = NCR_NOT_SET;
124static int ncr_5380 = NCR_NOT_SET;
125static int ncr_53c400 = NCR_NOT_SET;
126static int ncr_53c400a = NCR_NOT_SET;
127static int dtc_3181e = NCR_NOT_SET;
128
129static struct override {
130 NCR5380_implementation_fields;
131 int irq;
132 int dma;
133 int board; /* Use NCR53c400, Ricoh, etc. extensions ? */
134} overrides
135#ifdef GENERIC_NCR5380_OVERRIDE
136[] __initdata = GENERIC_NCR5380_OVERRIDE;
137#else
138[1] __initdata = { { 0,},};
139#endif
140
141
142#define NO_OVERRIDES (sizeof(overrides) / sizeof(struct override))
143
144#ifndef MODULE
145
146/**
147 * internal_setup - handle lilo command string override
148 * @board: BOARD_* identifier for the board
149 * @str: unused
150 * @ints: numeric parameters
151 *
152 * Do LILO command line initialization of the overrides array. Display
153 * errors when needed
154 *
155 * Locks: none
156 */
157
158static void __init internal_setup(int board, char *str, int *ints)
159{
160 static int commandline_current = 0;
161 switch (board) {
162 case BOARD_NCR5380:
163 if (ints[0] != 2 && ints[0] != 3) {
164 printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n");
165 return;
166 }
167 break;
168 case BOARD_NCR53C400:
169 if (ints[0] != 2) {
170 printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n");
171 return;
172 }
173 break;
174 case BOARD_NCR53C400A:
175 if (ints[0] != 2) {
176 printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n");
177 return;
178 }
179 break;
180 case BOARD_DTC3181E:
181 if (ints[0] != 2) {
182 printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n");
183 return;
184 }
185 break;
186 }
187
188 if (commandline_current < NO_OVERRIDES) {
189 overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1];
190 overrides[commandline_current].irq = ints[2];
191 if (ints[0] == 3)
192 overrides[commandline_current].dma = ints[3];
193 else
194 overrides[commandline_current].dma = DMA_NONE;
195 overrides[commandline_current].board = board;
196 ++commandline_current;
197 }
198}
199
200
201/**
202 * do_NCR53C80_setup - set up entry point
203 * @str: unused
204 *
205 * Setup function invoked at boot to parse the ncr5380= command
206 * line.
207 */
208
209static int __init do_NCR5380_setup(char *str)
210{
211 int ints[10];
212
213 get_options(str, sizeof(ints) / sizeof(int), ints);
214 internal_setup(BOARD_NCR5380, str, ints);
215 return 1;
216}
217
218/**
219 * do_NCR53C400_setup - set up entry point
220 * @str: unused
221 * @ints: integer parameters from kernel setup code
222 *
223 * Setup function invoked at boot to parse the ncr53c400= command
224 * line.
225 */
226
227static int __init do_NCR53C400_setup(char *str)
228{
229 int ints[10];
230
231 get_options(str, sizeof(ints) / sizeof(int), ints);
232 internal_setup(BOARD_NCR53C400, str, ints);
233 return 1;
234}
235
236/**
237 * do_NCR53C400A_setup - set up entry point
238 * @str: unused
239 * @ints: integer parameters from kernel setup code
240 *
241 * Setup function invoked at boot to parse the ncr53c400a= command
242 * line.
243 */
244
245static int __init do_NCR53C400A_setup(char *str)
246{
247 int ints[10];
248
249 get_options(str, sizeof(ints) / sizeof(int), ints);
250 internal_setup(BOARD_NCR53C400A, str, ints);
251 return 1;
252}
253
254/**
255 * do_DTC3181E_setup - set up entry point
256 * @str: unused
257 * @ints: integer parameters from kernel setup code
258 *
259 * Setup function invoked at boot to parse the dtc3181e= command
260 * line.
261 */
262
263static int __init do_DTC3181E_setup(char *str)
264{
265 int ints[10];
266
267 get_options(str, sizeof(ints) / sizeof(int), ints);
268 internal_setup(BOARD_DTC3181E, str, ints);
269 return 1;
270}
271
272#endif
273
274/**
275 * generic_NCR5380_detect - look for NCR5380 controllers
276 * @tpnt: the scsi template
277 *
278 * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E
279 * and DTC436(ISAPnP) controllers. If overrides have been set we use
280 * them.
281 *
282 * The caller supplied NCR5380_init function is invoked from here, before
283 * the interrupt line is taken.
284 *
285 * Locks: none
286 */
287
288int __init generic_NCR5380_detect(Scsi_Host_Template * tpnt)
289{
290 static int current_override = 0;
291 int count, i;
292 unsigned int *ports;
293 unsigned long region_size = 16;
294 static unsigned int __initdata ncr_53c400a_ports[] = {
295 0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0
296 };
297 static unsigned int __initdata dtc_3181e_ports[] = {
298 0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0
299 };
300 int flags = 0;
301 struct Scsi_Host *instance;
302
303 if (ncr_irq != NCR_NOT_SET)
304 overrides[0].irq = ncr_irq;
305 if (ncr_dma != NCR_NOT_SET)
306 overrides[0].dma = ncr_dma;
307 if (ncr_addr != NCR_NOT_SET)
308 overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr;
309 if (ncr_5380 != NCR_NOT_SET)
310 overrides[0].board = BOARD_NCR5380;
311 else if (ncr_53c400 != NCR_NOT_SET)
312 overrides[0].board = BOARD_NCR53C400;
313 else if (ncr_53c400a != NCR_NOT_SET)
314 overrides[0].board = BOARD_NCR53C400A;
315 else if (dtc_3181e != NCR_NOT_SET)
316 overrides[0].board = BOARD_DTC3181E;
317
318 if (!current_override && isapnp_present()) {
319 struct pnp_dev *dev = NULL;
320 count = 0;
321 while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) {
322 if (count >= NO_OVERRIDES)
323 break;
324 if (pnp_device_attach(dev) < 0) {
325 printk(KERN_ERR "dtc436e probe: attach failed\n");
326 continue;
327 }
328 if (pnp_activate_dev(dev) < 0) {
329 printk(KERN_ERR "dtc436e probe: activate failed\n");
330 pnp_device_detach(dev);
331 continue;
332 }
333 if (!pnp_port_valid(dev, 0)) {
334 printk(KERN_ERR "dtc436e probe: no valid port\n");
335 pnp_device_detach(dev);
336 continue;
337 }
338 if (pnp_irq_valid(dev, 0))
339 overrides[count].irq = pnp_irq(dev, 0);
340 else
341 overrides[count].irq = SCSI_IRQ_NONE;
342 if (pnp_dma_valid(dev, 0))
343 overrides[count].dma = pnp_dma(dev, 0);
344 else
345 overrides[count].dma = DMA_NONE;
346 overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0);
347 overrides[count].board = BOARD_DTC3181E;
348 count++;
349 }
350 }
351
352 tpnt->proc_name = "g_NCR5380";
353
354 for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
355 if (!(overrides[current_override].NCR5380_map_name))
356 continue;
357
358 ports = NULL;
359 switch (overrides[current_override].board) {
360 case BOARD_NCR5380:
361 flags = FLAG_NO_PSEUDO_DMA;
362 break;
363 case BOARD_NCR53C400:
364 flags = FLAG_NCR53C400;
365 break;
366 case BOARD_NCR53C400A:
367 flags = FLAG_NO_PSEUDO_DMA;
368 ports = ncr_53c400a_ports;
369 break;
370 case BOARD_DTC3181E:
371 flags = FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E;
372 ports = dtc_3181e_ports;
373 break;
374 }
375
376#ifndef CONFIG_SCSI_G_NCR5380_MEM
377 if (ports) {
378 /* wakeup sequence for the NCR53C400A and DTC3181E */
379
380 /* Disable the adapter and look for a free io port */
381 outb(0x59, 0x779);
382 outb(0xb9, 0x379);
383 outb(0xc5, 0x379);
384 outb(0xae, 0x379);
385 outb(0xa6, 0x379);
386 outb(0x00, 0x379);
387
388 if (overrides[current_override].NCR5380_map_name != PORT_AUTO)
389 for (i = 0; ports[i]; i++) {
390 if (!request_region(ports[i], 16, "ncr53c80"))
391 continue;
392 if (overrides[current_override].NCR5380_map_name == ports[i])
393 break;
394 release_region(ports[i], 16);
395 } else
396 for (i = 0; ports[i]; i++) {
397 if (!request_region(ports[i], 16, "ncr53c80"))
398 continue;
399 if (inb(ports[i]) == 0xff)
400 break;
401 release_region(ports[i], 16);
402 }
403 if (ports[i]) {
404 /* At this point we have our region reserved */
405 outb(0x59, 0x779);
406 outb(0xb9, 0x379);
407 outb(0xc5, 0x379);
408 outb(0xae, 0x379);
409 outb(0xa6, 0x379);
410 outb(0x80 | i, 0x379); /* set io port to be used */
411 outb(0xc0, ports[i] + 9);
412 if (inb(ports[i] + 9) != 0x80)
413 continue;
414 else
415 overrides[current_override].NCR5380_map_name = ports[i];
416 } else
417 continue;
418 }
419 else
420 {
421 /* Not a 53C400A style setup - just grab */
422 if(!(request_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380")))
423 continue;
424 region_size = NCR5380_region_size;
425 }
426#else
427 if(!request_mem_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380"))
428 continue;
429#endif
430 instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata));
431 if (instance == NULL) {
432#ifndef CONFIG_SCSI_G_NCR5380_MEM
433 release_region(overrides[current_override].NCR5380_map_name, region_size);
434#else
435 release_mem_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size);
436#endif
437 continue;
438 }
439
440 instance->NCR5380_instance_name = overrides[current_override].NCR5380_map_name;
441#ifndef CONFIG_SCSI_G_NCR5380_MEM
442 instance->n_io_port = region_size;
443#endif
444
445 NCR5380_init(instance, flags);
446
447 if (overrides[current_override].irq != IRQ_AUTO)
448 instance->irq = overrides[current_override].irq;
449 else
450 instance->irq = NCR5380_probe_irq(instance, 0xffff);
451
452 if (instance->irq != SCSI_IRQ_NONE)
453 if (request_irq(instance->irq, generic_NCR5380_intr, SA_INTERRUPT, "NCR5380", instance)) {
454 printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq);
455 instance->irq = SCSI_IRQ_NONE;
456 }
457
458 if (instance->irq == SCSI_IRQ_NONE) {
459 printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
460 printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
461 }
462
463 printk(KERN_INFO "scsi%d : at " STRVAL(NCR5380_map_name) " 0x%x", instance->host_no, (unsigned int) instance->NCR5380_instance_name);
464 if (instance->irq == SCSI_IRQ_NONE)
465 printk(" interrupts disabled");
466 else
467 printk(" irq %d", instance->irq);
468 printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", CAN_QUEUE, CMD_PER_LUN, GENERIC_NCR5380_PUBLIC_RELEASE);
469 NCR5380_print_options(instance);
470 printk("\n");
471
472 ++current_override;
473 ++count;
474 }
475 return count;
476}
477
478/**
479 * generic_NCR5380_info - reporting string
480 * @host: NCR5380 to report on
481 *
482 * Report driver information for the NCR5380
483 */
484
485const char *generic_NCR5380_info(struct Scsi_Host *host)
486{
487 static const char string[] = "Generic NCR5380/53C400 Driver";
488 return string;
489}
490
491/**
492 * generic_NCR5380_release_resources - free resources
493 * @instance: host adapter to clean up
494 *
495 * Free the generic interface resources from this adapter.
496 *
497 * Locks: none
498 */
499
500int generic_NCR5380_release_resources(struct Scsi_Host *instance)
501{
502 NCR5380_local_declare();
503 NCR5380_setup(instance);
504
505 if (instance->irq != SCSI_IRQ_NONE)
506 free_irq(instance->irq, NULL);
507 NCR5380_exit(instance);
508
509#ifndef CONFIG_SCSI_G_NCR5380_MEM
510 release_region(instance->NCR5380_instance_name, instance->n_io_port);
511#else
512 release_mem_region(instance->NCR5380_instance_name, NCR5380_region_size);
513#endif
514
515
516 return 0;
517}
518
519#ifdef BIOSPARAM
520/**
521 * generic_NCR5380_biosparam
522 * @disk: disk to compute geometry for
523 * @dev: device identifier for this disk
524 * @ip: sizes to fill in
525 *
526 * Generates a BIOS / DOS compatible H-C-S mapping for the specified
527 * device / size.
528 *
529 * XXX Most SCSI boards use this mapping, I could be incorrect. Someone
530 * using hard disks on a trantor should verify that this mapping
531 * corresponds to that used by the BIOS / ASPI driver by running the linux
532 * fdisk program and matching the H_C_S coordinates to what DOS uses.
533 *
534 * Locks: none
535 */
536
537static int
538generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev,
539 sector_t capacity, int *ip)
540{
541 ip[0] = 64;
542 ip[1] = 32;
543 ip[2] = capacity >> 11;
544 return 0;
545}
546#endif
547
548#if NCR53C400_PSEUDO_DMA
549
550/**
551 * NCR5380_pread - pseudo DMA read
552 * @instance: adapter to read from
553 * @dst: buffer to read into
554 * @len: buffer length
555 *
556 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent
557 * controller
558 */
559
560static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len)
561{
562 int blocks = len / 128;
563 int start = 0;
564 int bl;
565
566 NCR5380_local_declare();
567 NCR5380_setup(instance);
568
569 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR);
570 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
571 while (1) {
572 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
573 break;
574 }
575 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
576 printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
577 return -1;
578 }
579 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY);
580
581#ifndef CONFIG_SCSI_G_NCR5380_MEM
582 {
583 int i;
584 for (i = 0; i < 128; i++)
585 dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
586 }
587#else
588 /* implies CONFIG_SCSI_G_NCR5380_MEM */
589 isa_memcpy_fromio(dst + start, NCR53C400_host_buffer + NCR5380_map_name, 128);
590#endif
591 start += 128;
592 blocks--;
593 }
594
595 if (blocks) {
596 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
597 {
598 // FIXME - no timeout
599 }
600
601#ifndef CONFIG_SCSI_G_NCR5380_MEM
602 {
603 int i;
604 for (i = 0; i < 128; i++)
605 dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
606 }
607#else
608 /* implies CONFIG_SCSI_G_NCR5380_MEM */
609 isa_memcpy_fromio(dst + start, NCR53C400_host_buffer + NCR5380_map_name, 128);
610#endif
611 start += 128;
612 blocks--;
613 }
614
615 if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
616 printk("53C400r: no 53C80 gated irq after transfer");
617
618#if 0
619 /*
620 * DON'T DO THIS - THEY NEVER ARRIVE!
621 */
622 printk("53C400r: Waiting for 53C80 registers\n");
623 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG)
624 ;
625#endif
626 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER))
627 printk(KERN_ERR "53C400r: no end dma signal\n");
628
629 NCR5380_write(MODE_REG, MR_BASE);
630 NCR5380_read(RESET_PARITY_INTERRUPT_REG);
631 return 0;
632}
633
634/**
635 * NCR5380_write - pseudo DMA write
636 * @instance: adapter to read from
637 * @dst: buffer to read into
638 * @len: buffer length
639 *
640 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent
641 * controller
642 */
643
644static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len)
645{
646 int blocks = len / 128;
647 int start = 0;
648 int bl;
649 int i;
650
651 NCR5380_local_declare();
652 NCR5380_setup(instance);
653
654 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE);
655 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
656 while (1) {
657 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
658 printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
659 return -1;
660 }
661
662 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
663 break;
664 }
665 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
666 ; // FIXME - timeout
667#ifndef CONFIG_SCSI_G_NCR5380_MEM
668 {
669 for (i = 0; i < 128; i++)
670 NCR5380_write(C400_HOST_BUFFER, src[start + i]);
671 }
672#else
673 /* implies CONFIG_SCSI_G_NCR5380_MEM */
674 isa_memcpy_toio(NCR53C400_host_buffer + NCR5380_map_name, src + start, 128);
675#endif
676 start += 128;
677 blocks--;
678 }
679 if (blocks) {
680 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
681 ; // FIXME - no timeout
682
683#ifndef CONFIG_SCSI_G_NCR5380_MEM
684 {
685 for (i = 0; i < 128; i++)
686 NCR5380_write(C400_HOST_BUFFER, src[start + i]);
687 }
688#else
689 /* implies CONFIG_SCSI_G_NCR5380_MEM */
690 isa_memcpy_toio(NCR53C400_host_buffer + NCR5380_map_name, src + start, 128);
691#endif
692 start += 128;
693 blocks--;
694 }
695
696#if 0
697 printk("53C400w: waiting for registers to be available\n");
698 THEY NEVER DO ! while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG);
699 printk("53C400w: Got em\n");
700#endif
701
702 /* Let's wait for this instead - could be ugly */
703 /* All documentation says to check for this. Maybe my hardware is too
704 * fast. Waiting for it seems to work fine! KLL
705 */
706 while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
707 ; // FIXME - no timeout
708
709 /*
710 * I know. i is certainly != 0 here but the loop is new. See previous
711 * comment.
712 */
713 if (i) {
714 if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER))
715 printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i);
716 } else
717 printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n");
718
719#if 0
720 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) {
721 printk(KERN_ERR "53C400w: no end dma signal\n");
722 }
723#endif
724 while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT))
725 ; // TIMEOUT
726 return 0;
727}
728#endif /* PSEUDO_DMA */
729
730/*
731 * Include the NCR5380 core code that we build our driver around
732 */
733
734#include "NCR5380.c"
735
736#define PRINTP(x) len += sprintf(buffer+len, x)
737#define ANDP ,
738
739static int sprint_opcode(char *buffer, int len, int opcode)
740{
741 int start = len;
742 PRINTP("0x%02x " ANDP opcode);
743 return len - start;
744}
745
746static int sprint_command(char *buffer, int len, unsigned char *command)
747{
748 int i, s, start = len;
749 len += sprint_opcode(buffer, len, command[0]);
750 for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i)
751 PRINTP("%02x " ANDP command[i]);
752 PRINTP("\n");
753 return len - start;
754}
755
756/**
757 * sprintf_Scsi_Cmnd - print a scsi command
758 * @buffer: buffr to print into
759 * @len: buffer length
760 * @cmd: SCSI command block
761 *
762 * Print out the target and command data in hex
763 */
764
765static int sprint_Scsi_Cmnd(char *buffer, int len, Scsi_Cmnd * cmd)
766{
767 int start = len;
768 PRINTP("host number %d destination target %d, lun %d\n" ANDP cmd->device->host->host_no ANDP cmd->device->id ANDP cmd->device->lun);
769 PRINTP(" command = ");
770 len += sprint_command(buffer, len, cmd->cmnd);
771 return len - start;
772}
773
774/**
775 * generic_NCR5380_proc_info - /proc for NCR5380 driver
776 * @buffer: buffer to print into
777 * @start: start position
778 * @offset: offset into buffer
779 * @len: length
780 * @hostno: instance to affect
781 * @inout: read/write
782 *
783 * Provide the procfs information for the 5380 controller. We fill
784 * this with useful debugging information including the commands
785 * being executed, disconnected command queue and the statistical
786 * data
787 *
788 * Locks: global cli/lock for queue walk
789 */
790
791static int generic_NCR5380_proc_info(struct Scsi_Host *scsi_ptr, char *buffer, char **start, off_t offset, int length, int inout)
792{
793 int len = 0;
794 NCR5380_local_declare();
795 unsigned long flags;
796 unsigned char status;
797 int i;
798 Scsi_Cmnd *ptr;
799 struct NCR5380_hostdata *hostdata;
800#ifdef NCR5380_STATS
801 Scsi_Device *dev;
802 extern const char *const scsi_device_types[MAX_SCSI_DEVICE_CODE];
803#endif
804
805 NCR5380_setup(scsi_ptr);
806 hostdata = (struct NCR5380_hostdata *) scsi_ptr->hostdata;
807
808 spin_lock_irqsave(scsi_ptr->host_lock, flags);
809 PRINTP("SCSI host number %d : %s\n" ANDP scsi_ptr->host_no ANDP scsi_ptr->hostt->name);
810 PRINTP("Generic NCR5380 driver version %d\n" ANDP GENERIC_NCR5380_PUBLIC_RELEASE);
811 PRINTP("NCR5380 core version %d\n" ANDP NCR5380_PUBLIC_RELEASE);
812#ifdef NCR53C400
813 PRINTP("NCR53C400 extension version %d\n" ANDP NCR53C400_PUBLIC_RELEASE);
814 PRINTP("NCR53C400 card%s detected\n" ANDP(((struct NCR5380_hostdata *) scsi_ptr->hostdata)->flags & FLAG_NCR53C400) ? "" : " not");
815# if NCR53C400_PSEUDO_DMA
816 PRINTP("NCR53C400 pseudo DMA used\n");
817# endif
818#else
819 PRINTP("NO NCR53C400 driver extensions\n");
820#endif
821 PRINTP("Using %s mapping at %s 0x%lx, " ANDP STRVAL(NCR5380_map_config) ANDP STRVAL(NCR5380_map_name) ANDP scsi_ptr->NCR5380_instance_name);
822 if (scsi_ptr->irq == SCSI_IRQ_NONE)
823 PRINTP("no interrupt\n");
824 else
825 PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq);
826
827#ifdef NCR5380_STATS
828 if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue)
829 PRINTP("There are commands pending, transfer rates may be crud\n");
830 if (hostdata->pendingr)
831 PRINTP(" %d pending reads" ANDP hostdata->pendingr);
832 if (hostdata->pendingw)
833 PRINTP(" %d pending writes" ANDP hostdata->pendingw);
834 if (hostdata->pendingr || hostdata->pendingw)
835 PRINTP("\n");
836 shost_for_each_device(dev, scsi_ptr) {
837 unsigned long br = hostdata->bytes_read[dev->id];
838 unsigned long bw = hostdata->bytes_write[dev->id];
839 long tr = hostdata->time_read[dev->id] / HZ;
840 long tw = hostdata->time_write[dev->id] / HZ;
841
842 PRINTP(" T:%d %s " ANDP dev->id ANDP(dev->type < MAX_SCSI_DEVICE_CODE) ? scsi_device_types[(int) dev->type] : "Unknown");
843 for (i = 0; i < 8; i++)
844 if (dev->vendor[i] >= 0x20)
845 *(buffer + (len++)) = dev->vendor[i];
846 *(buffer + (len++)) = ' ';
847 for (i = 0; i < 16; i++)
848 if (dev->model[i] >= 0x20)
849 *(buffer + (len++)) = dev->model[i];
850 *(buffer + (len++)) = ' ';
851 for (i = 0; i < 4; i++)
852 if (dev->rev[i] >= 0x20)
853 *(buffer + (len++)) = dev->rev[i];
854 *(buffer + (len++)) = ' ';
855
856 PRINTP("\n%10ld kb read in %5ld secs" ANDP br / 1024 ANDP tr);
857 if (tr)
858 PRINTP(" @ %5ld bps" ANDP br / tr);
859
860 PRINTP("\n%10ld kb written in %5ld secs" ANDP bw / 1024 ANDP tw);
861 if (tw)
862 PRINTP(" @ %5ld bps" ANDP bw / tw);
863 PRINTP("\n");
864 }
865#endif
866
867 status = NCR5380_read(STATUS_REG);
868 if (!(status & SR_REQ))
869 PRINTP("REQ not asserted, phase unknown.\n");
870 else {
871 for (i = 0; (phases[i].value != PHASE_UNKNOWN) && (phases[i].value != (status & PHASE_MASK)); ++i);
872 PRINTP("Phase %s\n" ANDP phases[i].name);
873 }
874
875 if (!hostdata->connected) {
876 PRINTP("No currently connected command\n");
877 } else {
878 len += sprint_Scsi_Cmnd(buffer, len, (Scsi_Cmnd *) hostdata->connected);
879 }
880
881 PRINTP("issue_queue\n");
882
883 for (ptr = (Scsi_Cmnd *) hostdata->issue_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble)
884 len += sprint_Scsi_Cmnd(buffer, len, ptr);
885
886 PRINTP("disconnected_queue\n");
887
888 for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble)
889 len += sprint_Scsi_Cmnd(buffer, len, ptr);
890
891 *start = buffer + offset;
892 len -= offset;
893 if (len > length)
894 len = length;
895 spin_unlock_irqrestore(scsi_ptr->host_lock, flags);
896 return len;
897}
898
899#undef PRINTP
900#undef ANDP
901
902static Scsi_Host_Template driver_template = {
903 .proc_info = generic_NCR5380_proc_info,
904 .name = "Generic NCR5380/NCR53C400 Scsi Driver",
905 .detect = generic_NCR5380_detect,
906 .release = generic_NCR5380_release_resources,
907 .info = generic_NCR5380_info,
908 .queuecommand = generic_NCR5380_queue_command,
909 .eh_abort_handler = generic_NCR5380_abort,
910 .eh_bus_reset_handler = generic_NCR5380_bus_reset,
911 .eh_device_reset_handler = generic_NCR5380_device_reset,
912 .eh_host_reset_handler = generic_NCR5380_host_reset,
913 .bios_param = NCR5380_BIOSPARAM,
914 .can_queue = CAN_QUEUE,
915 .this_id = 7,
916 .sg_tablesize = SG_ALL,
917 .cmd_per_lun = CMD_PER_LUN,
918 .use_clustering = DISABLE_CLUSTERING,
919};
920#include <linux/module.h>
921#include "scsi_module.c"
922
923module_param(ncr_irq, int, 0);
924module_param(ncr_dma, int, 0);
925module_param(ncr_addr, int, 0);
926module_param(ncr_5380, int, 0);
927module_param(ncr_53c400, int, 0);
928module_param(ncr_53c400a, int, 0);
929module_param(dtc_3181e, int, 0);
930MODULE_LICENSE("GPL");
931
932
933static struct isapnp_device_id id_table[] __devinitdata = {
934 {
935 ISAPNP_ANY_ID, ISAPNP_ANY_ID,
936 ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e),
937 0},
938 {0}
939};
940
941MODULE_DEVICE_TABLE(isapnp, id_table);
942
943
944__setup("ncr5380=", do_NCR5380_setup);
945__setup("ncr53c400=", do_NCR53C400_setup);
946__setup("ncr53c400a=", do_NCR53C400A_setup);
947__setup("dtc3181e=", do_DTC3181E_setup);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-04 12:05:25 -0500