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g_NCR5380: remove misleading pnp error message
[net-next-2.6.git] / drivers / scsi / g_NCR5380.c
CommitLineData
1da177e4
LT		 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
1da177e4
LT		 94
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>
1da177e4
LT		 106#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 {
c818cb64 128 NCR5380_map_type NCR5380_map_name;
1da177e4
LT		 129 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
6391a113 139#define NO_OVERRIDES ARRAY_SIZE(overrides)
1da177e4 140
6391a113 141#ifndef MODULE
1da177e4
LT		 142
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
6391a113 210 get_options(str, ARRAY_SIZE(ints), ints);
1da177e4
LT		 211 internal_setup(BOARD_NCR5380, str, ints);
212 return 1;
213}
214
215/**
216 * do_NCR53C400_setup - set up entry point
217 * @str: unused
6391a113 218 * @ints: integer parameters from kernel setup code
1da177e4
LT		 219 *
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
6391a113 228 get_options(str, ARRAY_SIZE(ints), ints);
1da177e4
LT		 229 internal_setup(BOARD_NCR53C400, str, ints);
230 return 1;
231}
232
233/**
234 * do_NCR53C400A_setup - set up entry point
235 * @str: unused
6391a113 236 * @ints: integer parameters from kernel setup code
1da177e4
LT		 237 *
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
6391a113 246 get_options(str, ARRAY_SIZE(ints), ints);
1da177e4
LT		 247 internal_setup(BOARD_NCR53C400A, str, ints);
248 return 1;
249}
250
251/**
252 * do_DTC3181E_setup - set up entry point
253 * @str: unused
6391a113 254 * @ints: integer parameters from kernel setup code
1da177e4
LT		 255 *
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
6391a113 264 get_options(str, ARRAY_SIZE(ints), ints);
1da177e4
LT		 265 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
d0be4a7d 285int __init generic_NCR5380_detect(struct scsi_host_template * tpnt)
1da177e4
LT		 286{
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;
c818cb64
AV		 299#ifdef CONFIG_SCSI_G_NCR5380_MEM
300 unsigned long base;
301 void __iomem *iomem;
302#endif
1da177e4
LT		 303
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;
c94babba 325 if (pnp_device_attach(dev) < 0)
1da177e4 326 continue;
1da177e4
LT		 327 if (pnp_activate_dev(dev) < 0) {
328 printk(KERN_ERR "dtc436e probe: activate failed\n");
329 pnp_device_detach(dev);
330 continue;
331 }
332 if (!pnp_port_valid(dev, 0)) {
333 printk(KERN_ERR "dtc436e probe: no valid port\n");
334 pnp_device_detach(dev);
335 continue;
336 }
337 if (pnp_irq_valid(dev, 0))
338 overrides[count].irq = pnp_irq(dev, 0);
339 else
340 overrides[count].irq = SCSI_IRQ_NONE;
341 if (pnp_dma_valid(dev, 0))
342 overrides[count].dma = pnp_dma(dev, 0);
343 else
344 overrides[count].dma = DMA_NONE;
345 overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0);
346 overrides[count].board = BOARD_DTC3181E;
347 count++;
348 }
349 }
350
351 tpnt->proc_name = "g_NCR5380";
352
353 for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
354 if (!(overrides[current_override].NCR5380_map_name))
355 continue;
356
357 ports = NULL;
358 switch (overrides[current_override].board) {
359 case BOARD_NCR5380:
360 flags = FLAG_NO_PSEUDO_DMA;
361 break;
362 case BOARD_NCR53C400:
363 flags = FLAG_NCR53C400;
364 break;
365 case BOARD_NCR53C400A:
366 flags = FLAG_NO_PSEUDO_DMA;
367 ports = ncr_53c400a_ports;
368 break;
369 case BOARD_DTC3181E:
370 flags = FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E;
371 ports = dtc_3181e_ports;
372 break;
373 }
374
375#ifndef CONFIG_SCSI_G_NCR5380_MEM
376 if (ports) {
377 /* wakeup sequence for the NCR53C400A and DTC3181E */
378
379 /* Disable the adapter and look for a free io port */
380 outb(0x59, 0x779);
381 outb(0xb9, 0x379);
382 outb(0xc5, 0x379);
383 outb(0xae, 0x379);
384 outb(0xa6, 0x379);
385 outb(0x00, 0x379);
386
387 if (overrides[current_override].NCR5380_map_name != PORT_AUTO)
388 for (i = 0; ports[i]; i++) {
389 if (!request_region(ports[i], 16, "ncr53c80"))
390 continue;
391 if (overrides[current_override].NCR5380_map_name == ports[i])
392 break;
393 release_region(ports[i], 16);
394 } else
395 for (i = 0; ports[i]; i++) {
396 if (!request_region(ports[i], 16, "ncr53c80"))
397 continue;
398 if (inb(ports[i]) == 0xff)
399 break;
400 release_region(ports[i], 16);
401 }
402 if (ports[i]) {
403 /* At this point we have our region reserved */
404 outb(0x59, 0x779);
405 outb(0xb9, 0x379);
406 outb(0xc5, 0x379);
407 outb(0xae, 0x379);
408 outb(0xa6, 0x379);
409 outb(0x80 | i, 0x379); /* set io port to be used */
410 outb(0xc0, ports[i] + 9);
411 if (inb(ports[i] + 9) != 0x80)
412 continue;
413 else
414 overrides[current_override].NCR5380_map_name = ports[i];
415 } else
416 continue;
417 }
418 else
419 {
420 /* Not a 53C400A style setup - just grab */
421 if(!(request_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380")))
422 continue;
423 region_size = NCR5380_region_size;
424 }
425#else
c818cb64
AV		 426 base = overrides[current_override].NCR5380_map_name;
427 if (!request_mem_region(base, NCR5380_region_size, "ncr5380"))
428 continue;
429 iomem = ioremap(base, NCR5380_region_size);
430 if (!iomem) {
431 release_mem_region(base, NCR5380_region_size);
1da177e4 432 continue;
c818cb64 433 }
1da177e4
LT		 434#endif
435 instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata));
436 if (instance == NULL) {
437#ifndef CONFIG_SCSI_G_NCR5380_MEM
438 release_region(overrides[current_override].NCR5380_map_name, region_size);
439#else
c818cb64
AV		 440 iounmap(iomem);
441 release_mem_region(base, NCR5380_region_size);
1da177e4
LT		 442#endif
443 continue;
444 }
445
446 instance->NCR5380_instance_name = overrides[current_override].NCR5380_map_name;
447#ifndef CONFIG_SCSI_G_NCR5380_MEM
448 instance->n_io_port = region_size;
c818cb64
AV		 449#else
450 ((struct NCR5380_hostdata *)instance->hostdata).iomem = iomem;
1da177e4
LT		 451#endif
452
453 NCR5380_init(instance, flags);
454
455 if (overrides[current_override].irq != IRQ_AUTO)
456 instance->irq = overrides[current_override].irq;
457 else
458 instance->irq = NCR5380_probe_irq(instance, 0xffff);
459
460 if (instance->irq != SCSI_IRQ_NONE)
1e641664
JG		 461 if (request_irq(instance->irq, generic_NCR5380_intr,
462 IRQF_DISABLED, "NCR5380", instance)) {
1da177e4
LT		 463 printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq);
464 instance->irq = SCSI_IRQ_NONE;
465 }
466
467 if (instance->irq == SCSI_IRQ_NONE) {
468 printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
469 printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
470 }
471
472 printk(KERN_INFO "scsi%d : at " STRVAL(NCR5380_map_name) " 0x%x", instance->host_no, (unsigned int) instance->NCR5380_instance_name);
473 if (instance->irq == SCSI_IRQ_NONE)
474 printk(" interrupts disabled");
475 else
476 printk(" irq %d", instance->irq);
477 printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", CAN_QUEUE, CMD_PER_LUN, GENERIC_NCR5380_PUBLIC_RELEASE);
478 NCR5380_print_options(instance);
479 printk("\n");
480
481 ++current_override;
482 ++count;
483 }
484 return count;
485}
486
487/**
488 * generic_NCR5380_info - reporting string
489 * @host: NCR5380 to report on
490 *
491 * Report driver information for the NCR5380
492 */
493
494const char *generic_NCR5380_info(struct Scsi_Host *host)
495{
496 static const char string[] = "Generic NCR5380/53C400 Driver";
497 return string;
498}
499
500/**
501 * generic_NCR5380_release_resources - free resources
502 * @instance: host adapter to clean up
503 *
504 * Free the generic interface resources from this adapter.
505 *
506 * Locks: none
507 */
508
509int generic_NCR5380_release_resources(struct Scsi_Host *instance)
510{
511 NCR5380_local_declare();
512 NCR5380_setup(instance);
513
514 if (instance->irq != SCSI_IRQ_NONE)
1e641664 515 free_irq(instance->irq, instance);
1da177e4
LT		 516 NCR5380_exit(instance);
517
518#ifndef CONFIG_SCSI_G_NCR5380_MEM
519 release_region(instance->NCR5380_instance_name, instance->n_io_port);
520#else
c818cb64 521 iounmap(((struct NCR5380_hostdata *)instance->hostdata).iomem);
1da177e4
LT		 522 release_mem_region(instance->NCR5380_instance_name, NCR5380_region_size);
523#endif
524
525
526 return 0;
527}
528
529#ifdef BIOSPARAM
530/**
531 * generic_NCR5380_biosparam
532 * @disk: disk to compute geometry for
533 * @dev: device identifier for this disk
534 * @ip: sizes to fill in
535 *
536 * Generates a BIOS / DOS compatible H-C-S mapping for the specified
537 * device / size.
538 *
539 * XXX Most SCSI boards use this mapping, I could be incorrect. Someone
540 * using hard disks on a trantor should verify that this mapping
541 * corresponds to that used by the BIOS / ASPI driver by running the linux
542 * fdisk program and matching the H_C_S coordinates to what DOS uses.
543 *
544 * Locks: none
545 */
546
547static int
548generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev,
549 sector_t capacity, int *ip)
550{
551 ip[0] = 64;
552 ip[1] = 32;
553 ip[2] = capacity >> 11;
554 return 0;
555}
556#endif
557
8d9e0f46 558#ifdef NCR53C400_PSEUDO_DMA
1da177e4
LT		 559
560/**
561 * NCR5380_pread - pseudo DMA read
562 * @instance: adapter to read from
563 * @dst: buffer to read into
564 * @len: buffer length
565 *
566 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent
567 * controller
568 */
569
570static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len)
571{
572 int blocks = len / 128;
573 int start = 0;
574 int bl;
575
576 NCR5380_local_declare();
577 NCR5380_setup(instance);
578
579 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR);
580 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
581 while (1) {
582 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
583 break;
584 }
585 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
586 printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
587 return -1;
588 }
589 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY);
590
591#ifndef CONFIG_SCSI_G_NCR5380_MEM
592 {
593 int i;
594 for (i = 0; i < 128; i++)
595 dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
596 }
597#else
598 /* implies CONFIG_SCSI_G_NCR5380_MEM */
c818cb64 599 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128);
1da177e4
LT		 600#endif
601 start += 128;
602 blocks--;
603 }
604
605 if (blocks) {
606 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
607 {
608 // FIXME - no timeout
609 }
610
611#ifndef CONFIG_SCSI_G_NCR5380_MEM
612 {
613 int i;
614 for (i = 0; i < 128; i++)
615 dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
616 }
617#else
618 /* implies CONFIG_SCSI_G_NCR5380_MEM */
c818cb64 619 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128);
1da177e4
LT		 620#endif
621 start += 128;
622 blocks--;
623 }
624
625 if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
626 printk("53C400r: no 53C80 gated irq after transfer");
627
628#if 0
629 /*
630 * DON'T DO THIS - THEY NEVER ARRIVE!
631 */
632 printk("53C400r: Waiting for 53C80 registers\n");
633 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG)
634 ;
635#endif
636 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER))
637 printk(KERN_ERR "53C400r: no end dma signal\n");
638
639 NCR5380_write(MODE_REG, MR_BASE);
640 NCR5380_read(RESET_PARITY_INTERRUPT_REG);
641 return 0;
642}
643
644/**
645 * NCR5380_write - pseudo DMA write
646 * @instance: adapter to read from
647 * @dst: buffer to read into
648 * @len: buffer length
649 *
650 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent
651 * controller
652 */
653
654static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len)
655{
656 int blocks = len / 128;
657 int start = 0;
658 int bl;
659 int i;
660
661 NCR5380_local_declare();
662 NCR5380_setup(instance);
663
664 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE);
665 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
666 while (1) {
667 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
668 printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
669 return -1;
670 }
671
672 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
673 break;
674 }
675 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
676 ; // FIXME - timeout
677#ifndef CONFIG_SCSI_G_NCR5380_MEM
678 {
679 for (i = 0; i < 128; i++)
680 NCR5380_write(C400_HOST_BUFFER, src[start + i]);
681 }
682#else
683 /* implies CONFIG_SCSI_G_NCR5380_MEM */
c818cb64 684 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128);
1da177e4
LT		 685#endif
686 start += 128;
687 blocks--;
688 }
689 if (blocks) {
690 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
691 ; // FIXME - no timeout
692
693#ifndef CONFIG_SCSI_G_NCR5380_MEM
694 {
695 for (i = 0; i < 128; i++)
696 NCR5380_write(C400_HOST_BUFFER, src[start + i]);
697 }
698#else
699 /* implies CONFIG_SCSI_G_NCR5380_MEM */
c818cb64 700 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128);
1da177e4
LT		 701#endif
702 start += 128;
703 blocks--;
704 }
705
706#if 0
707 printk("53C400w: waiting for registers to be available\n");
708 THEY NEVER DO ! while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG);
709 printk("53C400w: Got em\n");
710#endif
711
712 /* Let's wait for this instead - could be ugly */
713 /* All documentation says to check for this. Maybe my hardware is too
714 * fast. Waiting for it seems to work fine! KLL
715 */
716 while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
717 ; // FIXME - no timeout
718
719 /*
720 * I know. i is certainly != 0 here but the loop is new. See previous
721 * comment.
722 */
723 if (i) {
724 if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER))
725 printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i);
726 } else
727 printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n");
728
729#if 0
730 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) {
731 printk(KERN_ERR "53C400w: no end dma signal\n");
732 }
733#endif
734 while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT))
735 ; // TIMEOUT
736 return 0;
737}
738#endif /* PSEUDO_DMA */
739
740/*
741 * Include the NCR5380 core code that we build our driver around
742 */
743
744#include "NCR5380.c"
745
746#define PRINTP(x) len += sprintf(buffer+len, x)
747#define ANDP ,
748
749static int sprint_opcode(char *buffer, int len, int opcode)
750{
751 int start = len;
752 PRINTP("0x%02x " ANDP opcode);
753 return len - start;
754}
755
756static int sprint_command(char *buffer, int len, unsigned char *command)
757{
758 int i, s, start = len;
759 len += sprint_opcode(buffer, len, command[0]);
760 for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i)
761 PRINTP("%02x " ANDP command[i]);
762 PRINTP("\n");
763 return len - start;
764}
765
766/**
767 * sprintf_Scsi_Cmnd - print a scsi command
768 * @buffer: buffr to print into
769 * @len: buffer length
770 * @cmd: SCSI command block
771 *
772 * Print out the target and command data in hex
773 */
774
775static int sprint_Scsi_Cmnd(char *buffer, int len, Scsi_Cmnd * cmd)
776{
777 int start = len;
778 PRINTP("host number %d destination target %d, lun %d\n" ANDP cmd->device->host->host_no ANDP cmd->device->id ANDP cmd->device->lun);
779 PRINTP(" command = ");
780 len += sprint_command(buffer, len, cmd->cmnd);
781 return len - start;
782}
783
784/**
785 * generic_NCR5380_proc_info - /proc for NCR5380 driver
786 * @buffer: buffer to print into
787 * @start: start position
788 * @offset: offset into buffer
789 * @len: length
790 * @hostno: instance to affect
791 * @inout: read/write
792 *
793 * Provide the procfs information for the 5380 controller. We fill
794 * this with useful debugging information including the commands
795 * being executed, disconnected command queue and the statistical
796 * data
797 *
798 * Locks: global cli/lock for queue walk
799 */
800
801static int generic_NCR5380_proc_info(struct Scsi_Host *scsi_ptr, char *buffer, char **start, off_t offset, int length, int inout)
802{
803 int len = 0;
804 NCR5380_local_declare();
805 unsigned long flags;
806 unsigned char status;
807 int i;
808 Scsi_Cmnd *ptr;
809 struct NCR5380_hostdata *hostdata;
810#ifdef NCR5380_STATS
f64a181d 811 struct scsi_device *dev;
1da177e4
LT		 812#endif
813
814 NCR5380_setup(scsi_ptr);
815 hostdata = (struct NCR5380_hostdata *) scsi_ptr->hostdata;
816
817 spin_lock_irqsave(scsi_ptr->host_lock, flags);
818 PRINTP("SCSI host number %d : %s\n" ANDP scsi_ptr->host_no ANDP scsi_ptr->hostt->name);
819 PRINTP("Generic NCR5380 driver version %d\n" ANDP GENERIC_NCR5380_PUBLIC_RELEASE);
820 PRINTP("NCR5380 core version %d\n" ANDP NCR5380_PUBLIC_RELEASE);
821#ifdef NCR53C400
822 PRINTP("NCR53C400 extension version %d\n" ANDP NCR53C400_PUBLIC_RELEASE);
823 PRINTP("NCR53C400 card%s detected\n" ANDP(((struct NCR5380_hostdata *) scsi_ptr->hostdata)->flags & FLAG_NCR53C400) ? "" : " not");
824# if NCR53C400_PSEUDO_DMA
825 PRINTP("NCR53C400 pseudo DMA used\n");
826# endif
827#else
828 PRINTP("NO NCR53C400 driver extensions\n");
829#endif
830 PRINTP("Using %s mapping at %s 0x%lx, " ANDP STRVAL(NCR5380_map_config) ANDP STRVAL(NCR5380_map_name) ANDP scsi_ptr->NCR5380_instance_name);
831 if (scsi_ptr->irq == SCSI_IRQ_NONE)
832 PRINTP("no interrupt\n");
833 else
834 PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq);
835
836#ifdef NCR5380_STATS
837 if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue)
838 PRINTP("There are commands pending, transfer rates may be crud\n");
839 if (hostdata->pendingr)
840 PRINTP(" %d pending reads" ANDP hostdata->pendingr);
841 if (hostdata->pendingw)
842 PRINTP(" %d pending writes" ANDP hostdata->pendingw);
843 if (hostdata->pendingr || hostdata->pendingw)
844 PRINTP("\n");
845 shost_for_each_device(dev, scsi_ptr) {
846 unsigned long br = hostdata->bytes_read[dev->id];
847 unsigned long bw = hostdata->bytes_write[dev->id];
848 long tr = hostdata->time_read[dev->id] / HZ;
849 long tw = hostdata->time_write[dev->id] / HZ;
850
4ff36718 851 PRINTP(" T:%d %s " ANDP dev->id ANDP scsi_device_type(dev->type));
1da177e4
LT		 852 for (i = 0; i < 8; i++)
853 if (dev->vendor[i] >= 0x20)
854 *(buffer + (len++)) = dev->vendor[i];
855 *(buffer + (len++)) = ' ';
856 for (i = 0; i < 16; i++)
857 if (dev->model[i] >= 0x20)
858 *(buffer + (len++)) = dev->model[i];
859 *(buffer + (len++)) = ' ';
860 for (i = 0; i < 4; i++)
861 if (dev->rev[i] >= 0x20)
862 *(buffer + (len++)) = dev->rev[i];
863 *(buffer + (len++)) = ' ';
864
865 PRINTP("\n%10ld kb read in %5ld secs" ANDP br / 1024 ANDP tr);
866 if (tr)
867 PRINTP(" @ %5ld bps" ANDP br / tr);
868
869 PRINTP("\n%10ld kb written in %5ld secs" ANDP bw / 1024 ANDP tw);
870 if (tw)
871 PRINTP(" @ %5ld bps" ANDP bw / tw);
872 PRINTP("\n");
873 }
874#endif
875
876 status = NCR5380_read(STATUS_REG);
877 if (!(status & SR_REQ))
878 PRINTP("REQ not asserted, phase unknown.\n");
879 else {
880 for (i = 0; (phases[i].value != PHASE_UNKNOWN) && (phases[i].value != (status & PHASE_MASK)); ++i);
881 PRINTP("Phase %s\n" ANDP phases[i].name);
882 }
883
884 if (!hostdata->connected) {
885 PRINTP("No currently connected command\n");
886 } else {
887 len += sprint_Scsi_Cmnd(buffer, len, (Scsi_Cmnd *) hostdata->connected);
888 }
889
890 PRINTP("issue_queue\n");
891
892 for (ptr = (Scsi_Cmnd *) hostdata->issue_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble)
893 len += sprint_Scsi_Cmnd(buffer, len, ptr);
894
895 PRINTP("disconnected_queue\n");
896
897 for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble)
898 len += sprint_Scsi_Cmnd(buffer, len, ptr);
899
900 *start = buffer + offset;
901 len -= offset;
902 if (len > length)
903 len = length;
904 spin_unlock_irqrestore(scsi_ptr->host_lock, flags);
905 return len;
906}
907
908#undef PRINTP
909#undef ANDP
910
d0be4a7d 911static struct scsi_host_template driver_template = {
1da177e4
LT		 912 .proc_info = generic_NCR5380_proc_info,
913 .name = "Generic NCR5380/NCR53C400 Scsi Driver",
914 .detect = generic_NCR5380_detect,
915 .release = generic_NCR5380_release_resources,
916 .info = generic_NCR5380_info,
917 .queuecommand = generic_NCR5380_queue_command,
918 .eh_abort_handler = generic_NCR5380_abort,
919 .eh_bus_reset_handler = generic_NCR5380_bus_reset,
1da177e4
LT		 920 .bios_param = NCR5380_BIOSPARAM,
921 .can_queue = CAN_QUEUE,
922 .this_id = 7,
923 .sg_tablesize = SG_ALL,
924 .cmd_per_lun = CMD_PER_LUN,
925 .use_clustering = DISABLE_CLUSTERING,
926};
927#include <linux/module.h>
928#include "scsi_module.c"
929
930module_param(ncr_irq, int, 0);
931module_param(ncr_dma, int, 0);
932module_param(ncr_addr, int, 0);
933module_param(ncr_5380, int, 0);
934module_param(ncr_53c400, int, 0);
935module_param(ncr_53c400a, int, 0);
936module_param(dtc_3181e, int, 0);
937MODULE_LICENSE("GPL");
938
939
940static struct isapnp_device_id id_table[] __devinitdata = {
941 {
942 ISAPNP_ANY_ID, ISAPNP_ANY_ID,
943 ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e),
944 0},
945 {0}
946};
947
948MODULE_DEVICE_TABLE(isapnp, id_table);
949
950
951__setup("ncr5380=", do_NCR5380_setup);
952__setup("ncr53c400=", do_NCR53C400_setup);
953__setup("ncr53c400a=", do_NCR53C400A_setup);
954__setup("dtc3181e=", do_DTC3181E_setup);
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