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Merge tag 'v3.10.67' into update
[GitHub/mt8127/android_kernel_alcatel_ttab.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
1da177e4
LT		 103#include <asm/io.h>
104#include <linux/signal.h>
1da177e4
LT		 105#include <linux/blkdev.h>
106#include "scsi.h"
107#include <scsi/scsi_host.h>
108#include "g_NCR5380.h"
109#include "NCR5380.h"
110#include <linux/stat.h>
111#include <linux/init.h>
112#include <linux/ioport.h>
113#include <linux/isapnp.h>
114#include <linux/delay.h>
115#include <linux/interrupt.h>
116
117#define NCR_NOT_SET 0
118static int ncr_irq = NCR_NOT_SET;
119static int ncr_dma = NCR_NOT_SET;
120static int ncr_addr = NCR_NOT_SET;
121static int ncr_5380 = NCR_NOT_SET;
122static int ncr_53c400 = NCR_NOT_SET;
123static int ncr_53c400a = NCR_NOT_SET;
124static int dtc_3181e = NCR_NOT_SET;
125
126static struct override {
c818cb64 127 NCR5380_map_type NCR5380_map_name;
1da177e4
LT		 128 int irq;
129 int dma;
130 int board; /* Use NCR53c400, Ricoh, etc. extensions ? */
131} overrides
132#ifdef GENERIC_NCR5380_OVERRIDE
133[] __initdata = GENERIC_NCR5380_OVERRIDE;
134#else
135[1] __initdata = { { 0,},};
136#endif
137
6391a113 138#define NO_OVERRIDES ARRAY_SIZE(overrides)
1da177e4 139
6391a113 140#ifndef MODULE
1da177e4
LT		 141
142/**
143 * internal_setup - handle lilo command string override
144 * @board: BOARD_* identifier for the board
145 * @str: unused
146 * @ints: numeric parameters
147 *
148 * Do LILO command line initialization of the overrides array. Display
149 * errors when needed
150 *
151 * Locks: none
152 */
153
154static void __init internal_setup(int board, char *str, int *ints)
155{
156 static int commandline_current = 0;
157 switch (board) {
158 case BOARD_NCR5380:
159 if (ints[0] != 2 && ints[0] != 3) {
160 printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n");
161 return;
162 }
163 break;
164 case BOARD_NCR53C400:
165 if (ints[0] != 2) {
166 printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n");
167 return;
168 }
169 break;
170 case BOARD_NCR53C400A:
171 if (ints[0] != 2) {
172 printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n");
173 return;
174 }
175 break;
176 case BOARD_DTC3181E:
177 if (ints[0] != 2) {
178 printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n");
179 return;
180 }
181 break;
182 }
183
184 if (commandline_current < NO_OVERRIDES) {
185 overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1];
186 overrides[commandline_current].irq = ints[2];
187 if (ints[0] == 3)
188 overrides[commandline_current].dma = ints[3];
189 else
190 overrides[commandline_current].dma = DMA_NONE;
191 overrides[commandline_current].board = board;
192 ++commandline_current;
193 }
194}
195
196
197/**
198 * do_NCR53C80_setup - set up entry point
199 * @str: unused
200 *
201 * Setup function invoked at boot to parse the ncr5380= command
202 * line.
203 */
204
205static int __init do_NCR5380_setup(char *str)
206{
207 int ints[10];
208
6391a113 209 get_options(str, ARRAY_SIZE(ints), ints);
1da177e4
LT		 210 internal_setup(BOARD_NCR5380, str, ints);
211 return 1;
212}
213
214/**
215 * do_NCR53C400_setup - set up entry point
216 * @str: unused
6391a113 217 * @ints: integer parameters from kernel setup code
1da177e4
LT		 218 *
219 * Setup function invoked at boot to parse the ncr53c400= command
220 * line.
221 */
222
223static int __init do_NCR53C400_setup(char *str)
224{
225 int ints[10];
226
6391a113 227 get_options(str, ARRAY_SIZE(ints), ints);
1da177e4
LT		 228 internal_setup(BOARD_NCR53C400, str, ints);
229 return 1;
230}
231
232/**
233 * do_NCR53C400A_setup - set up entry point
234 * @str: unused
6391a113 235 * @ints: integer parameters from kernel setup code
1da177e4
LT		 236 *
237 * Setup function invoked at boot to parse the ncr53c400a= command
238 * line.
239 */
240
241static int __init do_NCR53C400A_setup(char *str)
242{
243 int ints[10];
244
6391a113 245 get_options(str, ARRAY_SIZE(ints), ints);
1da177e4
LT		 246 internal_setup(BOARD_NCR53C400A, str, ints);
247 return 1;
248}
249
250/**
251 * do_DTC3181E_setup - set up entry point
252 * @str: unused
6391a113 253 * @ints: integer parameters from kernel setup code
1da177e4
LT		 254 *
255 * Setup function invoked at boot to parse the dtc3181e= command
256 * line.
257 */
258
259static int __init do_DTC3181E_setup(char *str)
260{
261 int ints[10];
262
6391a113 263 get_options(str, ARRAY_SIZE(ints), ints);
1da177e4
LT		 264 internal_setup(BOARD_DTC3181E, str, ints);
265 return 1;
266}
267
268#endif
269
270/**
271 * generic_NCR5380_detect - look for NCR5380 controllers
272 * @tpnt: the scsi template
273 *
274 * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E
275 * and DTC436(ISAPnP) controllers. If overrides have been set we use
276 * them.
277 *
278 * The caller supplied NCR5380_init function is invoked from here, before
279 * the interrupt line is taken.
280 *
281 * Locks: none
282 */
283
d0be4a7d 284int __init generic_NCR5380_detect(struct scsi_host_template * tpnt)
1da177e4
LT		 285{
286 static int current_override = 0;
702a98c6 287 int count;
1da177e4 288 unsigned int *ports;
702a98c6
OZ		 289#ifndef SCSI_G_NCR5380_MEM
290 int i;
1da177e4 291 unsigned long region_size = 16;
702a98c6 292#endif
1da177e4
LT		 293 static unsigned int __initdata ncr_53c400a_ports[] = {
294 0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0
295 };
296 static unsigned int __initdata dtc_3181e_ports[] = {
297 0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0
298 };
299 int flags = 0;
300 struct Scsi_Host *instance;
702a98c6 301#ifdef SCSI_G_NCR5380_MEM
c818cb64
AV		 302 unsigned long base;
303 void __iomem *iomem;
304#endif
1da177e4
LT		 305
306 if (ncr_irq != NCR_NOT_SET)
307 overrides[0].irq = ncr_irq;
308 if (ncr_dma != NCR_NOT_SET)
309 overrides[0].dma = ncr_dma;
310 if (ncr_addr != NCR_NOT_SET)
311 overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr;
312 if (ncr_5380 != NCR_NOT_SET)
313 overrides[0].board = BOARD_NCR5380;
314 else if (ncr_53c400 != NCR_NOT_SET)
315 overrides[0].board = BOARD_NCR53C400;
316 else if (ncr_53c400a != NCR_NOT_SET)
317 overrides[0].board = BOARD_NCR53C400A;
318 else if (dtc_3181e != NCR_NOT_SET)
319 overrides[0].board = BOARD_DTC3181E;
702a98c6 320#ifndef SCSI_G_NCR5380_MEM
1da177e4
LT		 321 if (!current_override && isapnp_present()) {
322 struct pnp_dev *dev = NULL;
323 count = 0;
324 while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) {
325 if (count >= NO_OVERRIDES)
326 break;
c94babba 327 if (pnp_device_attach(dev) < 0)
1da177e4 328 continue;
1da177e4
LT		 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 }
702a98c6 352#endif
1da177e4
LT		 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
702a98c6 377#ifndef SCSI_G_NCR5380_MEM
1da177e4
LT		 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
c818cb64
AV		 428 base = overrides[current_override].NCR5380_map_name;
429 if (!request_mem_region(base, NCR5380_region_size, "ncr5380"))
430 continue;
431 iomem = ioremap(base, NCR5380_region_size);
432 if (!iomem) {
433 release_mem_region(base, NCR5380_region_size);
1da177e4 434 continue;
c818cb64 435 }
1da177e4
LT		 436#endif
437 instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata));
438 if (instance == NULL) {
702a98c6 439#ifndef SCSI_G_NCR5380_MEM
1da177e4
LT		 440 release_region(overrides[current_override].NCR5380_map_name, region_size);
441#else
c818cb64
AV		 442 iounmap(iomem);
443 release_mem_region(base, NCR5380_region_size);
1da177e4
LT		 444#endif
445 continue;
446 }
447
448 instance->NCR5380_instance_name = overrides[current_override].NCR5380_map_name;
702a98c6 449#ifndef SCSI_G_NCR5380_MEM
1da177e4 450 instance->n_io_port = region_size;
c818cb64 451#else
702a98c6 452 ((struct NCR5380_hostdata *)instance->hostdata)->iomem = iomem;
1da177e4
LT		 453#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)
1e641664
JG		 463 if (request_irq(instance->irq, generic_NCR5380_intr,
464 IRQF_DISABLED, "NCR5380", instance)) {
1da177e4
LT		 465 printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq);
466 instance->irq = SCSI_IRQ_NONE;
467 }
468
469 if (instance->irq == SCSI_IRQ_NONE) {
470 printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
471 printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
472 }
473
474 printk(KERN_INFO "scsi%d : at " STRVAL(NCR5380_map_name) " 0x%x", instance->host_no, (unsigned int) instance->NCR5380_instance_name);
475 if (instance->irq == SCSI_IRQ_NONE)
476 printk(" interrupts disabled");
477 else
478 printk(" irq %d", instance->irq);
479 printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", CAN_QUEUE, CMD_PER_LUN, GENERIC_NCR5380_PUBLIC_RELEASE);
480 NCR5380_print_options(instance);
481 printk("\n");
482
483 ++current_override;
484 ++count;
485 }
486 return count;
487}
488
489/**
490 * generic_NCR5380_info - reporting string
491 * @host: NCR5380 to report on
492 *
493 * Report driver information for the NCR5380
494 */
495
496const char *generic_NCR5380_info(struct Scsi_Host *host)
497{
498 static const char string[] = "Generic NCR5380/53C400 Driver";
499 return string;
500}
501
502/**
503 * generic_NCR5380_release_resources - free resources
504 * @instance: host adapter to clean up
505 *
506 * Free the generic interface resources from this adapter.
507 *
508 * Locks: none
509 */
510
511int generic_NCR5380_release_resources(struct Scsi_Host *instance)
512{
513 NCR5380_local_declare();
514 NCR5380_setup(instance);
515
516 if (instance->irq != SCSI_IRQ_NONE)
1e641664 517 free_irq(instance->irq, instance);
1da177e4
LT		 518 NCR5380_exit(instance);
519
702a98c6 520#ifndef SCSI_G_NCR5380_MEM
1da177e4
LT		 521 release_region(instance->NCR5380_instance_name, instance->n_io_port);
522#else
702a98c6 523 iounmap(((struct NCR5380_hostdata *)instance->hostdata)->iomem);
1da177e4
LT		 524 release_mem_region(instance->NCR5380_instance_name, NCR5380_region_size);
525#endif
526
527
528 return 0;
529}
530
531#ifdef BIOSPARAM
532/**
533 * generic_NCR5380_biosparam
534 * @disk: disk to compute geometry for
535 * @dev: device identifier for this disk
536 * @ip: sizes to fill in
537 *
538 * Generates a BIOS / DOS compatible H-C-S mapping for the specified
539 * device / size.
540 *
541 * XXX Most SCSI boards use this mapping, I could be incorrect. Someone
542 * using hard disks on a trantor should verify that this mapping
543 * corresponds to that used by the BIOS / ASPI driver by running the linux
544 * fdisk program and matching the H_C_S coordinates to what DOS uses.
545 *
546 * Locks: none
547 */
548
549static int
550generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev,
551 sector_t capacity, int *ip)
552{
553 ip[0] = 64;
554 ip[1] = 32;
555 ip[2] = capacity >> 11;
556 return 0;
557}
558#endif
559
8d9e0f46 560#ifdef NCR53C400_PSEUDO_DMA
1da177e4
LT		 561
562/**
563 * NCR5380_pread - pseudo DMA read
564 * @instance: adapter to read from
565 * @dst: buffer to read into
566 * @len: buffer length
567 *
25985edc 568 * Perform a pseudo DMA mode read from an NCR53C400 or equivalent
1da177e4
LT		 569 * controller
570 */
571
572static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len)
573{
574 int blocks = len / 128;
575 int start = 0;
576 int bl;
577
578 NCR5380_local_declare();
579 NCR5380_setup(instance);
580
581 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR);
582 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
583 while (1) {
584 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
585 break;
586 }
587 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
588 printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
589 return -1;
590 }
591 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY);
592
702a98c6 593#ifndef SCSI_G_NCR5380_MEM
1da177e4
LT		 594 {
595 int i;
596 for (i = 0; i < 128; i++)
597 dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
598 }
599#else
702a98c6 600 /* implies SCSI_G_NCR5380_MEM */
c818cb64 601 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128);
1da177e4
LT		 602#endif
603 start += 128;
604 blocks--;
605 }
606
607 if (blocks) {
608 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
609 {
610 // FIXME - no timeout
611 }
612
702a98c6 613#ifndef SCSI_G_NCR5380_MEM
1da177e4
LT		 614 {
615 int i;
616 for (i = 0; i < 128; i++)
617 dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
618 }
619#else
702a98c6 620 /* implies SCSI_G_NCR5380_MEM */
c818cb64 621 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128);
1da177e4
LT		 622#endif
623 start += 128;
624 blocks--;
625 }
626
627 if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
628 printk("53C400r: no 53C80 gated irq after transfer");
629
630#if 0
631 /*
632 * DON'T DO THIS - THEY NEVER ARRIVE!
633 */
634 printk("53C400r: Waiting for 53C80 registers\n");
635 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG)
636 ;
637#endif
638 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER))
639 printk(KERN_ERR "53C400r: no end dma signal\n");
640
641 NCR5380_write(MODE_REG, MR_BASE);
642 NCR5380_read(RESET_PARITY_INTERRUPT_REG);
643 return 0;
644}
645
646/**
647 * NCR5380_write - pseudo DMA write
648 * @instance: adapter to read from
649 * @dst: buffer to read into
650 * @len: buffer length
651 *
25985edc 652 * Perform a pseudo DMA mode read from an NCR53C400 or equivalent
1da177e4
LT		 653 * controller
654 */
655
656static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len)
657{
658 int blocks = len / 128;
659 int start = 0;
660 int bl;
661 int i;
662
663 NCR5380_local_declare();
664 NCR5380_setup(instance);
665
666 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE);
667 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
668 while (1) {
669 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
670 printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
671 return -1;
672 }
673
674 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
675 break;
676 }
677 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
678 ; // FIXME - timeout
702a98c6 679#ifndef SCSI_G_NCR5380_MEM
1da177e4
LT		 680 {
681 for (i = 0; i < 128; i++)
682 NCR5380_write(C400_HOST_BUFFER, src[start + i]);
683 }
684#else
702a98c6 685 /* implies SCSI_G_NCR5380_MEM */
c818cb64 686 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128);
1da177e4
LT		 687#endif
688 start += 128;
689 blocks--;
690 }
691 if (blocks) {
692 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
693 ; // FIXME - no timeout
694
702a98c6 695#ifndef SCSI_G_NCR5380_MEM
1da177e4
LT		 696 {
697 for (i = 0; i < 128; i++)
698 NCR5380_write(C400_HOST_BUFFER, src[start + i]);
699 }
700#else
702a98c6 701 /* implies SCSI_G_NCR5380_MEM */
c818cb64 702 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128);
1da177e4
LT		 703#endif
704 start += 128;
705 blocks--;
706 }
707
708#if 0
709 printk("53C400w: waiting for registers to be available\n");
710 THEY NEVER DO ! while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG);
711 printk("53C400w: Got em\n");
712#endif
713
714 /* Let's wait for this instead - could be ugly */
715 /* All documentation says to check for this. Maybe my hardware is too
716 * fast. Waiting for it seems to work fine! KLL
717 */
718 while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
719 ; // FIXME - no timeout
720
721 /*
722 * I know. i is certainly != 0 here but the loop is new. See previous
723 * comment.
724 */
725 if (i) {
726 if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER))
727 printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i);
728 } else
729 printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n");
730
731#if 0
732 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) {
733 printk(KERN_ERR "53C400w: no end dma signal\n");
734 }
735#endif
736 while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT))
737 ; // TIMEOUT
738 return 0;
739}
740#endif /* PSEUDO_DMA */
741
742/*
743 * Include the NCR5380 core code that we build our driver around
744 */
745
746#include "NCR5380.c"
747
dd7ab71b 748#define PRINTP(x) seq_printf(m, x)
1da177e4
LT		 749#define ANDP ,
750
dd7ab71b 751static void sprint_opcode(struct seq_file *m, int opcode)
1da177e4 752{
1da177e4 753 PRINTP("0x%02x " ANDP opcode);
1da177e4
LT		 754}
755
dd7ab71b 756static void sprint_command(struct seq_file *m, unsigned char *command)
1da177e4 757{
dd7ab71b
AV		 758 int i, s;
759 sprint_opcode(m, command[0]);
1da177e4
LT		 760 for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i)
761 PRINTP("%02x " ANDP command[i]);
762 PRINTP("\n");
1da177e4
LT		 763}
764
765/**
766 * sprintf_Scsi_Cmnd - print a scsi command
dd7ab71b 767 * @m: seq_fil to print into
1da177e4
LT		 768 * @cmd: SCSI command block
769 *
770 * Print out the target and command data in hex
771 */
772
dd7ab71b 773static void sprint_Scsi_Cmnd(struct seq_file *m, Scsi_Cmnd * cmd)
1da177e4 774{
1da177e4
LT		 775 PRINTP("host number %d destination target %d, lun %d\n" ANDP cmd->device->host->host_no ANDP cmd->device->id ANDP cmd->device->lun);
776 PRINTP(" command = ");
dd7ab71b 777 sprint_command(m, cmd->cmnd);
1da177e4
LT		 778}
779
780/**
781 * generic_NCR5380_proc_info - /proc for NCR5380 driver
782 * @buffer: buffer to print into
783 * @start: start position
784 * @offset: offset into buffer
785 * @len: length
786 * @hostno: instance to affect
787 * @inout: read/write
788 *
789 * Provide the procfs information for the 5380 controller. We fill
790 * this with useful debugging information including the commands
791 * being executed, disconnected command queue and the statistical
792 * data
793 *
794 * Locks: global cli/lock for queue walk
795 */
796
dd7ab71b 797static int generic_NCR5380_show_info(struct seq_file *m, struct Scsi_Host *scsi_ptr)
1da177e4 798{
1da177e4
LT		 799 NCR5380_local_declare();
800 unsigned long flags;
801 unsigned char status;
802 int i;
803 Scsi_Cmnd *ptr;
804 struct NCR5380_hostdata *hostdata;
805#ifdef NCR5380_STATS
f64a181d 806 struct scsi_device *dev;
1da177e4
LT		 807#endif
808
809 NCR5380_setup(scsi_ptr);
810 hostdata = (struct NCR5380_hostdata *) scsi_ptr->hostdata;
811
812 spin_lock_irqsave(scsi_ptr->host_lock, flags);
813 PRINTP("SCSI host number %d : %s\n" ANDP scsi_ptr->host_no ANDP scsi_ptr->hostt->name);
814 PRINTP("Generic NCR5380 driver version %d\n" ANDP GENERIC_NCR5380_PUBLIC_RELEASE);
815 PRINTP("NCR5380 core version %d\n" ANDP NCR5380_PUBLIC_RELEASE);
816#ifdef NCR53C400
817 PRINTP("NCR53C400 extension version %d\n" ANDP NCR53C400_PUBLIC_RELEASE);
818 PRINTP("NCR53C400 card%s detected\n" ANDP(((struct NCR5380_hostdata *) scsi_ptr->hostdata)->flags & FLAG_NCR53C400) ? "" : " not");
819# if NCR53C400_PSEUDO_DMA
820 PRINTP("NCR53C400 pseudo DMA used\n");
821# endif
822#else
823 PRINTP("NO NCR53C400 driver extensions\n");
824#endif
825 PRINTP("Using %s mapping at %s 0x%lx, " ANDP STRVAL(NCR5380_map_config) ANDP STRVAL(NCR5380_map_name) ANDP scsi_ptr->NCR5380_instance_name);
826 if (scsi_ptr->irq == SCSI_IRQ_NONE)
827 PRINTP("no interrupt\n");
828 else
829 PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq);
830
831#ifdef NCR5380_STATS
832 if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue)
833 PRINTP("There are commands pending, transfer rates may be crud\n");
834 if (hostdata->pendingr)
835 PRINTP(" %d pending reads" ANDP hostdata->pendingr);
836 if (hostdata->pendingw)
837 PRINTP(" %d pending writes" ANDP hostdata->pendingw);
838 if (hostdata->pendingr || hostdata->pendingw)
839 PRINTP("\n");
840 shost_for_each_device(dev, scsi_ptr) {
841 unsigned long br = hostdata->bytes_read[dev->id];
842 unsigned long bw = hostdata->bytes_write[dev->id];
843 long tr = hostdata->time_read[dev->id] / HZ;
844 long tw = hostdata->time_write[dev->id] / HZ;
845
4ff36718 846 PRINTP(" T:%d %s " ANDP dev->id ANDP scsi_device_type(dev->type));
1da177e4
LT		 847 for (i = 0; i < 8; i++)
848 if (dev->vendor[i] >= 0x20)
dd7ab71b
AV		 849 seq_putc(m, dev->vendor[i]);
850 seq_putc(m, ' ');
1da177e4
LT		 851 for (i = 0; i < 16; i++)
852 if (dev->model[i] >= 0x20)
dd7ab71b
AV		 853 seq_putc(m, dev->model[i]);
854 seq_putc(m, ' ');
1da177e4
LT		 855 for (i = 0; i < 4; i++)
856 if (dev->rev[i] >= 0x20)
dd7ab71b
AV		 857 seq_putc(m, dev->rev[i]);
858 seq_putc(m, ' ');
1da177e4
LT		 859
860 PRINTP("\n%10ld kb read in %5ld secs" ANDP br / 1024 ANDP tr);
861 if (tr)
862 PRINTP(" @ %5ld bps" ANDP br / tr);
863
864 PRINTP("\n%10ld kb written in %5ld secs" ANDP bw / 1024 ANDP tw);
865 if (tw)
866 PRINTP(" @ %5ld bps" ANDP bw / tw);
867 PRINTP("\n");
868 }
869#endif
870
871 status = NCR5380_read(STATUS_REG);
872 if (!(status & SR_REQ))
873 PRINTP("REQ not asserted, phase unknown.\n");
874 else {
875 for (i = 0; (phases[i].value != PHASE_UNKNOWN) && (phases[i].value != (status & PHASE_MASK)); ++i);
876 PRINTP("Phase %s\n" ANDP phases[i].name);
877 }
878
879 if (!hostdata->connected) {
880 PRINTP("No currently connected command\n");
881 } else {
dd7ab71b 882 sprint_Scsi_Cmnd(m, (Scsi_Cmnd *) hostdata->connected);
1da177e4
LT		 883 }
884
885 PRINTP("issue_queue\n");
886
887 for (ptr = (Scsi_Cmnd *) hostdata->issue_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble)
dd7ab71b 888 sprint_Scsi_Cmnd(m, ptr);
1da177e4
LT		 889
890 PRINTP("disconnected_queue\n");
891
892 for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble)
dd7ab71b 893 sprint_Scsi_Cmnd(m, ptr);
1da177e4 894
1da177e4 895 spin_unlock_irqrestore(scsi_ptr->host_lock, flags);
dd7ab71b 896 return 0;
1da177e4
LT		 897}
898
899#undef PRINTP
900#undef ANDP
901
d0be4a7d 902static struct scsi_host_template driver_template = {
dd7ab71b 903 .show_info = generic_NCR5380_show_info,
1da177e4
LT		 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,
1da177e4
LT		 911 .bios_param = NCR5380_BIOSPARAM,
912 .can_queue = CAN_QUEUE,
913 .this_id = 7,
914 .sg_tablesize = SG_ALL,
915 .cmd_per_lun = CMD_PER_LUN,
916 .use_clustering = DISABLE_CLUSTERING,
917};
918#include <linux/module.h>
919#include "scsi_module.c"
920
921module_param(ncr_irq, int, 0);
922module_param(ncr_dma, int, 0);
923module_param(ncr_addr, int, 0);
924module_param(ncr_5380, int, 0);
925module_param(ncr_53c400, int, 0);
926module_param(ncr_53c400a, int, 0);
927module_param(dtc_3181e, int, 0);
928MODULE_LICENSE("GPL");
929
702a98c6 930#ifndef SCSI_G_NCR5380_MEM
6f039790 931static struct isapnp_device_id id_table[] = {
1da177e4
LT		 932 {
933 ISAPNP_ANY_ID, ISAPNP_ANY_ID,
934 ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e),
935 0},
936 {0}
937};
938
939MODULE_DEVICE_TABLE(isapnp, id_table);
702a98c6 940#endif
1da177e4
LT		 941
942__setup("ncr5380=", do_NCR5380_setup);
943__setup("ncr53c400=", do_NCR53C400_setup);
944__setup("ncr53c400a=", do_NCR53C400A_setup);
945__setup("dtc3181e=", do_DTC3181E_setup);
kernel source for telekom puls (alcatel/mediatek)