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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
Linus Torvalds1da177e2005-04-16 15:20:36 -070094
95#ifdef CONFIG_SCSI_GENERIC_NCR53C400
96#define NCR53C400_PSEUDO_DMA 1
97#define PSEUDO_DMA
98#define NCR53C400
99#define NCR5380_STATS
100#undef NCR5380_STAT_LIMIT
101#endif
102
103#include <asm/system.h>
104#include <asm/io.h>
105#include <linux/signal.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106#include <linux/blkdev.h>
107#include "scsi.h"
108#include <scsi/scsi_host.h>
109#include "g_NCR5380.h"
110#include "NCR5380.h"
111#include <linux/stat.h>
112#include <linux/init.h>
113#include <linux/ioport.h>
114#include <linux/isapnp.h>
115#include <linux/delay.h>
116#include <linux/interrupt.h>
117
118#define NCR_NOT_SET 0
119static int ncr_irq = NCR_NOT_SET;
120static int ncr_dma = NCR_NOT_SET;
121static int ncr_addr = NCR_NOT_SET;
122static int ncr_5380 = NCR_NOT_SET;
123static int ncr_53c400 = NCR_NOT_SET;
124static int ncr_53c400a = NCR_NOT_SET;
125static int dtc_3181e = NCR_NOT_SET;
126
127static struct override {
Al Viroc818cb62006-03-24 03:15:37 -0800128 NCR5380_map_type NCR5380_map_name;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129 int irq;
130 int dma;
131 int board; /* Use NCR53c400, Ricoh, etc. extensions ? */
132} overrides
133#ifdef GENERIC_NCR5380_OVERRIDE
134[] __initdata = GENERIC_NCR5380_OVERRIDE;
135#else
136[1] __initdata = { { 0,},};
137#endif
138
Tobias Klauser6391a112006-06-08 22:23:48 -0700139#define NO_OVERRIDES ARRAY_SIZE(overrides)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140
Tobias Klauser6391a112006-06-08 22:23:48 -0700141#ifndef MODULE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142
143/**
144 * internal_setup - handle lilo command string override
145 * @board: BOARD_* identifier for the board
146 * @str: unused
147 * @ints: numeric parameters
148 *
149 * Do LILO command line initialization of the overrides array. Display
150 * errors when needed
151 *
152 * Locks: none
153 */
154
155static void __init internal_setup(int board, char *str, int *ints)
156{
157 static int commandline_current = 0;
158 switch (board) {
159 case BOARD_NCR5380:
160 if (ints[0] != 2 && ints[0] != 3) {
161 printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n");
162 return;
163 }
164 break;
165 case BOARD_NCR53C400:
166 if (ints[0] != 2) {
167 printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n");
168 return;
169 }
170 break;
171 case BOARD_NCR53C400A:
172 if (ints[0] != 2) {
173 printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n");
174 return;
175 }
176 break;
177 case BOARD_DTC3181E:
178 if (ints[0] != 2) {
179 printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n");
180 return;
181 }
182 break;
183 }
184
185 if (commandline_current < NO_OVERRIDES) {
186 overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1];
187 overrides[commandline_current].irq = ints[2];
188 if (ints[0] == 3)
189 overrides[commandline_current].dma = ints[3];
190 else
191 overrides[commandline_current].dma = DMA_NONE;
192 overrides[commandline_current].board = board;
193 ++commandline_current;
194 }
195}
196
197
198/**
199 * do_NCR53C80_setup - set up entry point
200 * @str: unused
201 *
202 * Setup function invoked at boot to parse the ncr5380= command
203 * line.
204 */
205
206static int __init do_NCR5380_setup(char *str)
207{
208 int ints[10];
209
Tobias Klauser6391a112006-06-08 22:23:48 -0700210 get_options(str, ARRAY_SIZE(ints), ints);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211 internal_setup(BOARD_NCR5380, str, ints);
212 return 1;
213}
214
215/**
216 * do_NCR53C400_setup - set up entry point
217 * @str: unused
Tobias Klauser6391a112006-06-08 22:23:48 -0700218 * @ints: integer parameters from kernel setup code
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219 *
220 * Setup function invoked at boot to parse the ncr53c400= command
221 * line.
222 */
223
224static int __init do_NCR53C400_setup(char *str)
225{
226 int ints[10];
227
Tobias Klauser6391a112006-06-08 22:23:48 -0700228 get_options(str, ARRAY_SIZE(ints), ints);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229 internal_setup(BOARD_NCR53C400, str, ints);
230 return 1;
231}
232
233/**
234 * do_NCR53C400A_setup - set up entry point
235 * @str: unused
Tobias Klauser6391a112006-06-08 22:23:48 -0700236 * @ints: integer parameters from kernel setup code
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237 *
238 * Setup function invoked at boot to parse the ncr53c400a= command
239 * line.
240 */
241
242static int __init do_NCR53C400A_setup(char *str)
243{
244 int ints[10];
245
Tobias Klauser6391a112006-06-08 22:23:48 -0700246 get_options(str, ARRAY_SIZE(ints), ints);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247 internal_setup(BOARD_NCR53C400A, str, ints);
248 return 1;
249}
250
251/**
252 * do_DTC3181E_setup - set up entry point
253 * @str: unused
Tobias Klauser6391a112006-06-08 22:23:48 -0700254 * @ints: integer parameters from kernel setup code
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255 *
256 * Setup function invoked at boot to parse the dtc3181e= command
257 * line.
258 */
259
260static int __init do_DTC3181E_setup(char *str)
261{
262 int ints[10];
263
Tobias Klauser6391a112006-06-08 22:23:48 -0700264 get_options(str, ARRAY_SIZE(ints), ints);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265 internal_setup(BOARD_DTC3181E, str, ints);
266 return 1;
267}
268
269#endif
270
271/**
272 * generic_NCR5380_detect - look for NCR5380 controllers
273 * @tpnt: the scsi template
274 *
275 * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E
276 * and DTC436(ISAPnP) controllers. If overrides have been set we use
277 * them.
278 *
279 * The caller supplied NCR5380_init function is invoked from here, before
280 * the interrupt line is taken.
281 *
282 * Locks: none
283 */
284
Christoph Hellwigd0be4a7d2005-10-31 18:31:40 +0100285int __init generic_NCR5380_detect(struct scsi_host_template * tpnt)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286{
287 static int current_override = 0;
288 int count, i;
289 unsigned int *ports;
290 unsigned long region_size = 16;
291 static unsigned int __initdata ncr_53c400a_ports[] = {
292 0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0
293 };
294 static unsigned int __initdata dtc_3181e_ports[] = {
295 0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0
296 };
297 int flags = 0;
298 struct Scsi_Host *instance;
Al Viroc818cb62006-03-24 03:15:37 -0800299#ifdef CONFIG_SCSI_G_NCR5380_MEM
300 unsigned long base;
301 void __iomem *iomem;
302#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303
304 if (ncr_irq != NCR_NOT_SET)
305 overrides[0].irq = ncr_irq;
306 if (ncr_dma != NCR_NOT_SET)
307 overrides[0].dma = ncr_dma;
308 if (ncr_addr != NCR_NOT_SET)
309 overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr;
310 if (ncr_5380 != NCR_NOT_SET)
311 overrides[0].board = BOARD_NCR5380;
312 else if (ncr_53c400 != NCR_NOT_SET)
313 overrides[0].board = BOARD_NCR53C400;
314 else if (ncr_53c400a != NCR_NOT_SET)
315 overrides[0].board = BOARD_NCR53C400A;
316 else if (dtc_3181e != NCR_NOT_SET)
317 overrides[0].board = BOARD_DTC3181E;
318
319 if (!current_override && isapnp_present()) {
320 struct pnp_dev *dev = NULL;
321 count = 0;
322 while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) {
323 if (count >= NO_OVERRIDES)
324 break;
325 if (pnp_device_attach(dev) < 0) {
326 printk(KERN_ERR "dtc436e probe: attach failed\n");
327 continue;
328 }
329 if (pnp_activate_dev(dev) < 0) {
330 printk(KERN_ERR "dtc436e probe: activate failed\n");
331 pnp_device_detach(dev);
332 continue;
333 }
334 if (!pnp_port_valid(dev, 0)) {
335 printk(KERN_ERR "dtc436e probe: no valid port\n");
336 pnp_device_detach(dev);
337 continue;
338 }
339 if (pnp_irq_valid(dev, 0))
340 overrides[count].irq = pnp_irq(dev, 0);
341 else
342 overrides[count].irq = SCSI_IRQ_NONE;
343 if (pnp_dma_valid(dev, 0))
344 overrides[count].dma = pnp_dma(dev, 0);
345 else
346 overrides[count].dma = DMA_NONE;
347 overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0);
348 overrides[count].board = BOARD_DTC3181E;
349 count++;
350 }
351 }
352
353 tpnt->proc_name = "g_NCR5380";
354
355 for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
356 if (!(overrides[current_override].NCR5380_map_name))
357 continue;
358
359 ports = NULL;
360 switch (overrides[current_override].board) {
361 case BOARD_NCR5380:
362 flags = FLAG_NO_PSEUDO_DMA;
363 break;
364 case BOARD_NCR53C400:
365 flags = FLAG_NCR53C400;
366 break;
367 case BOARD_NCR53C400A:
368 flags = FLAG_NO_PSEUDO_DMA;
369 ports = ncr_53c400a_ports;
370 break;
371 case BOARD_DTC3181E:
372 flags = FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E;
373 ports = dtc_3181e_ports;
374 break;
375 }
376
377#ifndef CONFIG_SCSI_G_NCR5380_MEM
378 if (ports) {
379 /* wakeup sequence for the NCR53C400A and DTC3181E */
380
381 /* Disable the adapter and look for a free io port */
382 outb(0x59, 0x779);
383 outb(0xb9, 0x379);
384 outb(0xc5, 0x379);
385 outb(0xae, 0x379);
386 outb(0xa6, 0x379);
387 outb(0x00, 0x379);
388
389 if (overrides[current_override].NCR5380_map_name != PORT_AUTO)
390 for (i = 0; ports[i]; i++) {
391 if (!request_region(ports[i], 16, "ncr53c80"))
392 continue;
393 if (overrides[current_override].NCR5380_map_name == ports[i])
394 break;
395 release_region(ports[i], 16);
396 } else
397 for (i = 0; ports[i]; i++) {
398 if (!request_region(ports[i], 16, "ncr53c80"))
399 continue;
400 if (inb(ports[i]) == 0xff)
401 break;
402 release_region(ports[i], 16);
403 }
404 if (ports[i]) {
405 /* At this point we have our region reserved */
406 outb(0x59, 0x779);
407 outb(0xb9, 0x379);
408 outb(0xc5, 0x379);
409 outb(0xae, 0x379);
410 outb(0xa6, 0x379);
411 outb(0x80 | i, 0x379); /* set io port to be used */
412 outb(0xc0, ports[i] + 9);
413 if (inb(ports[i] + 9) != 0x80)
414 continue;
415 else
416 overrides[current_override].NCR5380_map_name = ports[i];
417 } else
418 continue;
419 }
420 else
421 {
422 /* Not a 53C400A style setup - just grab */
423 if(!(request_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380")))
424 continue;
425 region_size = NCR5380_region_size;
426 }
427#else
Al Viroc818cb62006-03-24 03:15:37 -0800428 base = overrides[current_override].NCR5380_map_name;
429 if (!request_mem_region(base, NCR5380_region_size, "ncr5380"))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430 continue;
Al Viroc818cb62006-03-24 03:15:37 -0800431 iomem = ioremap(base, NCR5380_region_size);
432 if (!iomem) {
433 release_mem_region(base, NCR5380_region_size);
434 continue;
435 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436#endif
437 instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata));
438 if (instance == NULL) {
439#ifndef CONFIG_SCSI_G_NCR5380_MEM
440 release_region(overrides[current_override].NCR5380_map_name, region_size);
441#else
Al Viroc818cb62006-03-24 03:15:37 -0800442 iounmap(iomem);
443 release_mem_region(base, NCR5380_region_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444#endif
445 continue;
446 }
447
448 instance->NCR5380_instance_name = overrides[current_override].NCR5380_map_name;
449#ifndef CONFIG_SCSI_G_NCR5380_MEM
450 instance->n_io_port = region_size;
Al Viroc818cb62006-03-24 03:15:37 -0800451#else
452 ((struct NCR5380_hostdata *)instance->hostdata).iomem = iomem;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453#endif
454
455 NCR5380_init(instance, flags);
456
457 if (overrides[current_override].irq != IRQ_AUTO)
458 instance->irq = overrides[current_override].irq;
459 else
460 instance->irq = NCR5380_probe_irq(instance, 0xffff);
461
462 if (instance->irq != SCSI_IRQ_NONE)
Thomas Gleixner1d6f3592006-07-01 19:29:42 -0700463 if (request_irq(instance->irq, generic_NCR5380_intr, IRQF_DISABLED, "NCR5380", instance)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464 printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq);
465 instance->irq = SCSI_IRQ_NONE;
466 }
467
468 if (instance->irq == SCSI_IRQ_NONE) {
469 printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
470 printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
471 }
472
473 printk(KERN_INFO "scsi%d : at " STRVAL(NCR5380_map_name) " 0x%x", instance->host_no, (unsigned int) instance->NCR5380_instance_name);
474 if (instance->irq == SCSI_IRQ_NONE)
475 printk(" interrupts disabled");
476 else
477 printk(" irq %d", instance->irq);
478 printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", CAN_QUEUE, CMD_PER_LUN, GENERIC_NCR5380_PUBLIC_RELEASE);
479 NCR5380_print_options(instance);
480 printk("\n");
481
482 ++current_override;
483 ++count;
484 }
485 return count;
486}
487
488/**
489 * generic_NCR5380_info - reporting string
490 * @host: NCR5380 to report on
491 *
492 * Report driver information for the NCR5380
493 */
494
495const char *generic_NCR5380_info(struct Scsi_Host *host)
496{
497 static const char string[] = "Generic NCR5380/53C400 Driver";
498 return string;
499}
500
501/**
502 * generic_NCR5380_release_resources - free resources
503 * @instance: host adapter to clean up
504 *
505 * Free the generic interface resources from this adapter.
506 *
507 * Locks: none
508 */
509
510int generic_NCR5380_release_resources(struct Scsi_Host *instance)
511{
512 NCR5380_local_declare();
513 NCR5380_setup(instance);
514
515 if (instance->irq != SCSI_IRQ_NONE)
516 free_irq(instance->irq, NULL);
517 NCR5380_exit(instance);
518
519#ifndef CONFIG_SCSI_G_NCR5380_MEM
520 release_region(instance->NCR5380_instance_name, instance->n_io_port);
521#else
Al Viroc818cb62006-03-24 03:15:37 -0800522 iounmap(((struct NCR5380_hostdata *)instance->hostdata).iomem);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523 release_mem_region(instance->NCR5380_instance_name, NCR5380_region_size);
524#endif
525
526
527 return 0;
528}
529
530#ifdef BIOSPARAM
531/**
532 * generic_NCR5380_biosparam
533 * @disk: disk to compute geometry for
534 * @dev: device identifier for this disk
535 * @ip: sizes to fill in
536 *
537 * Generates a BIOS / DOS compatible H-C-S mapping for the specified
538 * device / size.
539 *
540 * XXX Most SCSI boards use this mapping, I could be incorrect. Someone
541 * using hard disks on a trantor should verify that this mapping
542 * corresponds to that used by the BIOS / ASPI driver by running the linux
543 * fdisk program and matching the H_C_S coordinates to what DOS uses.
544 *
545 * Locks: none
546 */
547
548static int
549generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev,
550 sector_t capacity, int *ip)
551{
552 ip[0] = 64;
553 ip[1] = 32;
554 ip[2] = capacity >> 11;
555 return 0;
556}
557#endif
558
559#if NCR53C400_PSEUDO_DMA
560
561/**
562 * NCR5380_pread - pseudo DMA read
563 * @instance: adapter to read from
564 * @dst: buffer to read into
565 * @len: buffer length
566 *
567 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent
568 * controller
569 */
570
571static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len)
572{
573 int blocks = len / 128;
574 int start = 0;
575 int bl;
576
577 NCR5380_local_declare();
578 NCR5380_setup(instance);
579
580 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR);
581 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
582 while (1) {
583 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
584 break;
585 }
586 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
587 printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
588 return -1;
589 }
590 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY);
591
592#ifndef CONFIG_SCSI_G_NCR5380_MEM
593 {
594 int i;
595 for (i = 0; i < 128; i++)
596 dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
597 }
598#else
599 /* implies CONFIG_SCSI_G_NCR5380_MEM */
Al Viroc818cb62006-03-24 03:15:37 -0800600 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601#endif
602 start += 128;
603 blocks--;
604 }
605
606 if (blocks) {
607 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
608 {
609 // FIXME - no timeout
610 }
611
612#ifndef CONFIG_SCSI_G_NCR5380_MEM
613 {
614 int i;
615 for (i = 0; i < 128; i++)
616 dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
617 }
618#else
619 /* implies CONFIG_SCSI_G_NCR5380_MEM */
Al Viroc818cb62006-03-24 03:15:37 -0800620 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621#endif
622 start += 128;
623 blocks--;
624 }
625
626 if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
627 printk("53C400r: no 53C80 gated irq after transfer");
628
629#if 0
630 /*
631 * DON'T DO THIS - THEY NEVER ARRIVE!
632 */
633 printk("53C400r: Waiting for 53C80 registers\n");
634 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG)
635 ;
636#endif
637 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER))
638 printk(KERN_ERR "53C400r: no end dma signal\n");
639
640 NCR5380_write(MODE_REG, MR_BASE);
641 NCR5380_read(RESET_PARITY_INTERRUPT_REG);
642 return 0;
643}
644
645/**
646 * NCR5380_write - pseudo DMA write
647 * @instance: adapter to read from
648 * @dst: buffer to read into
649 * @len: buffer length
650 *
651 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent
652 * controller
653 */
654
655static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len)
656{
657 int blocks = len / 128;
658 int start = 0;
659 int bl;
660 int i;
661
662 NCR5380_local_declare();
663 NCR5380_setup(instance);
664
665 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE);
666 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
667 while (1) {
668 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
669 printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
670 return -1;
671 }
672
673 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
674 break;
675 }
676 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
677 ; // FIXME - timeout
678#ifndef CONFIG_SCSI_G_NCR5380_MEM
679 {
680 for (i = 0; i < 128; i++)
681 NCR5380_write(C400_HOST_BUFFER, src[start + i]);
682 }
683#else
684 /* implies CONFIG_SCSI_G_NCR5380_MEM */
Al Viroc818cb62006-03-24 03:15:37 -0800685 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700686#endif
687 start += 128;
688 blocks--;
689 }
690 if (blocks) {
691 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
692 ; // FIXME - no timeout
693
694#ifndef CONFIG_SCSI_G_NCR5380_MEM
695 {
696 for (i = 0; i < 128; i++)
697 NCR5380_write(C400_HOST_BUFFER, src[start + i]);
698 }
699#else
700 /* implies CONFIG_SCSI_G_NCR5380_MEM */
Al Viroc818cb62006-03-24 03:15:37 -0800701 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700702#endif
703 start += 128;
704 blocks--;
705 }
706
707#if 0
708 printk("53C400w: waiting for registers to be available\n");
709 THEY NEVER DO ! while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG);
710 printk("53C400w: Got em\n");
711#endif
712
713 /* Let's wait for this instead - could be ugly */
714 /* All documentation says to check for this. Maybe my hardware is too
715 * fast. Waiting for it seems to work fine! KLL
716 */
717 while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
718 ; // FIXME - no timeout
719
720 /*
721 * I know. i is certainly != 0 here but the loop is new. See previous
722 * comment.
723 */
724 if (i) {
725 if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER))
726 printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i);
727 } else
728 printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n");
729
730#if 0
731 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) {
732 printk(KERN_ERR "53C400w: no end dma signal\n");
733 }
734#endif
735 while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT))
736 ; // TIMEOUT
737 return 0;
738}
739#endif /* PSEUDO_DMA */
740
741/*
742 * Include the NCR5380 core code that we build our driver around
743 */
744
745#include "NCR5380.c"
746
747#define PRINTP(x) len += sprintf(buffer+len, x)
748#define ANDP ,
749
750static int sprint_opcode(char *buffer, int len, int opcode)
751{
752 int start = len;
753 PRINTP("0x%02x " ANDP opcode);
754 return len - start;
755}
756
757static int sprint_command(char *buffer, int len, unsigned char *command)
758{
759 int i, s, start = len;
760 len += sprint_opcode(buffer, len, command[0]);
761 for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i)
762 PRINTP("%02x " ANDP command[i]);
763 PRINTP("\n");
764 return len - start;
765}
766
767/**
768 * sprintf_Scsi_Cmnd - print a scsi command
769 * @buffer: buffr to print into
770 * @len: buffer length
771 * @cmd: SCSI command block
772 *
773 * Print out the target and command data in hex
774 */
775
776static int sprint_Scsi_Cmnd(char *buffer, int len, Scsi_Cmnd * cmd)
777{
778 int start = len;
779 PRINTP("host number %d destination target %d, lun %d\n" ANDP cmd->device->host->host_no ANDP cmd->device->id ANDP cmd->device->lun);
780 PRINTP(" command = ");
781 len += sprint_command(buffer, len, cmd->cmnd);
782 return len - start;
783}
784
785/**
786 * generic_NCR5380_proc_info - /proc for NCR5380 driver
787 * @buffer: buffer to print into
788 * @start: start position
789 * @offset: offset into buffer
790 * @len: length
791 * @hostno: instance to affect
792 * @inout: read/write
793 *
794 * Provide the procfs information for the 5380 controller. We fill
795 * this with useful debugging information including the commands
796 * being executed, disconnected command queue and the statistical
797 * data
798 *
799 * Locks: global cli/lock for queue walk
800 */
801
802static int generic_NCR5380_proc_info(struct Scsi_Host *scsi_ptr, char *buffer, char **start, off_t offset, int length, int inout)
803{
804 int len = 0;
805 NCR5380_local_declare();
806 unsigned long flags;
807 unsigned char status;
808 int i;
809 Scsi_Cmnd *ptr;
810 struct NCR5380_hostdata *hostdata;
811#ifdef NCR5380_STATS
Christoph Hellwigf64a1812005-10-31 18:32:08 +0100812 struct scsi_device *dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700813#endif
814
815 NCR5380_setup(scsi_ptr);
816 hostdata = (struct NCR5380_hostdata *) scsi_ptr->hostdata;
817
818 spin_lock_irqsave(scsi_ptr->host_lock, flags);
819 PRINTP("SCSI host number %d : %s\n" ANDP scsi_ptr->host_no ANDP scsi_ptr->hostt->name);
820 PRINTP("Generic NCR5380 driver version %d\n" ANDP GENERIC_NCR5380_PUBLIC_RELEASE);
821 PRINTP("NCR5380 core version %d\n" ANDP NCR5380_PUBLIC_RELEASE);
822#ifdef NCR53C400
823 PRINTP("NCR53C400 extension version %d\n" ANDP NCR53C400_PUBLIC_RELEASE);
824 PRINTP("NCR53C400 card%s detected\n" ANDP(((struct NCR5380_hostdata *) scsi_ptr->hostdata)->flags & FLAG_NCR53C400) ? "" : " not");
825# if NCR53C400_PSEUDO_DMA
826 PRINTP("NCR53C400 pseudo DMA used\n");
827# endif
828#else
829 PRINTP("NO NCR53C400 driver extensions\n");
830#endif
831 PRINTP("Using %s mapping at %s 0x%lx, " ANDP STRVAL(NCR5380_map_config) ANDP STRVAL(NCR5380_map_name) ANDP scsi_ptr->NCR5380_instance_name);
832 if (scsi_ptr->irq == SCSI_IRQ_NONE)
833 PRINTP("no interrupt\n");
834 else
835 PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq);
836
837#ifdef NCR5380_STATS
838 if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue)
839 PRINTP("There are commands pending, transfer rates may be crud\n");
840 if (hostdata->pendingr)
841 PRINTP(" %d pending reads" ANDP hostdata->pendingr);
842 if (hostdata->pendingw)
843 PRINTP(" %d pending writes" ANDP hostdata->pendingw);
844 if (hostdata->pendingr || hostdata->pendingw)
845 PRINTP("\n");
846 shost_for_each_device(dev, scsi_ptr) {
847 unsigned long br = hostdata->bytes_read[dev->id];
848 unsigned long bw = hostdata->bytes_write[dev->id];
849 long tr = hostdata->time_read[dev->id] / HZ;
850 long tw = hostdata->time_write[dev->id] / HZ;
851
Matthew Wilcox4ff36712006-07-04 12:15:20 -0600852 PRINTP(" T:%d %s " ANDP dev->id ANDP scsi_device_type(dev->type));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853 for (i = 0; i < 8; i++)
854 if (dev->vendor[i] >= 0x20)
855 *(buffer + (len++)) = dev->vendor[i];
856 *(buffer + (len++)) = ' ';
857 for (i = 0; i < 16; i++)
858 if (dev->model[i] >= 0x20)
859 *(buffer + (len++)) = dev->model[i];
860 *(buffer + (len++)) = ' ';
861 for (i = 0; i < 4; i++)
862 if (dev->rev[i] >= 0x20)
863 *(buffer + (len++)) = dev->rev[i];
864 *(buffer + (len++)) = ' ';
865
866 PRINTP("\n%10ld kb read in %5ld secs" ANDP br / 1024 ANDP tr);
867 if (tr)
868 PRINTP(" @ %5ld bps" ANDP br / tr);
869
870 PRINTP("\n%10ld kb written in %5ld secs" ANDP bw / 1024 ANDP tw);
871 if (tw)
872 PRINTP(" @ %5ld bps" ANDP bw / tw);
873 PRINTP("\n");
874 }
875#endif
876
877 status = NCR5380_read(STATUS_REG);
878 if (!(status & SR_REQ))
879 PRINTP("REQ not asserted, phase unknown.\n");
880 else {
881 for (i = 0; (phases[i].value != PHASE_UNKNOWN) && (phases[i].value != (status & PHASE_MASK)); ++i);
882 PRINTP("Phase %s\n" ANDP phases[i].name);
883 }
884
885 if (!hostdata->connected) {
886 PRINTP("No currently connected command\n");
887 } else {
888 len += sprint_Scsi_Cmnd(buffer, len, (Scsi_Cmnd *) hostdata->connected);
889 }
890
891 PRINTP("issue_queue\n");
892
893 for (ptr = (Scsi_Cmnd *) hostdata->issue_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble)
894 len += sprint_Scsi_Cmnd(buffer, len, ptr);
895
896 PRINTP("disconnected_queue\n");
897
898 for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble)
899 len += sprint_Scsi_Cmnd(buffer, len, ptr);
900
901 *start = buffer + offset;
902 len -= offset;
903 if (len > length)
904 len = length;
905 spin_unlock_irqrestore(scsi_ptr->host_lock, flags);
906 return len;
907}
908
909#undef PRINTP
910#undef ANDP
911
Christoph Hellwigd0be4a7d2005-10-31 18:31:40 +0100912static struct scsi_host_template driver_template = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700913 .proc_info = generic_NCR5380_proc_info,
914 .name = "Generic NCR5380/NCR53C400 Scsi Driver",
915 .detect = generic_NCR5380_detect,
916 .release = generic_NCR5380_release_resources,
917 .info = generic_NCR5380_info,
918 .queuecommand = generic_NCR5380_queue_command,
919 .eh_abort_handler = generic_NCR5380_abort,
920 .eh_bus_reset_handler = generic_NCR5380_bus_reset,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921 .bios_param = NCR5380_BIOSPARAM,
922 .can_queue = CAN_QUEUE,
923 .this_id = 7,
924 .sg_tablesize = SG_ALL,
925 .cmd_per_lun = CMD_PER_LUN,
926 .use_clustering = DISABLE_CLUSTERING,
927};
928#include <linux/module.h>
929#include "scsi_module.c"
930
931module_param(ncr_irq, int, 0);
932module_param(ncr_dma, int, 0);
933module_param(ncr_addr, int, 0);
934module_param(ncr_5380, int, 0);
935module_param(ncr_53c400, int, 0);
936module_param(ncr_53c400a, int, 0);
937module_param(dtc_3181e, int, 0);
938MODULE_LICENSE("GPL");
939
940
941static struct isapnp_device_id id_table[] __devinitdata = {
942 {
943 ISAPNP_ANY_ID, ISAPNP_ANY_ID,
944 ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e),
945 0},
946 {0}
947};
948
949MODULE_DEVICE_TABLE(isapnp, id_table);
950
951
952__setup("ncr5380=", do_NCR5380_setup);
953__setup("ncr53c400=", do_NCR53C400_setup);
954__setup("ncr53c400a=", do_NCR53C400A_setup);
955__setup("dtc3181e=", do_DTC3181E_setup);