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[bpt/coccinelle.git] / demos / demo_rule9 / g_NCR5380.c
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34e49164
C		 1/*
2 * Generic Generic NCR5380 driver
3 *
4 * Copyright 1993, Drew Eckhardt
5 * Visionary Computing
6 * (Unix and Linux consulting and custom programming)
7 * drew@colorado.edu
8 * +1 (303) 440-4894
9 *
10 * NCR53C400 extensions (c) 1994,1995,1996, Kevin Lentin
11 * K.Lentin@cs.monash.edu.au
12 *
13 * NCR53C400A extensions (c) 1996, Ingmar Baumgart
14 * ingmar@gonzo.schwaben.de
15 *
16 * DTC3181E extensions (c) 1997, Ronald van Cuijlenborg
17 * ronald.van.cuijlenborg@tip.nl or nutty@dds.nl
18 *
19 * Added ISAPNP support for DTC436 adapters,
20 * Thomas Sailer, sailer@ife.ee.ethz.ch
21 *
22 * 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/*
97111a47 82 * $Log$
34e49164
C		 83 * Revision 1.1.1.1 2007/03/28 16:38:53 pad
84 * your commit message
85 *
86 * Revision 1.1 2006/09/20 01:30:53 pad
87 * new files
88 *
89 */
90
91/* settings for DTC3181E card with only Mustek scanner attached */
92#define USLEEP
93#define USLEEP_POLL 1
94#define USLEEP_SLEEP 20
95#define USLEEP_WAITLONG 500
96
97#define AUTOPROBE_IRQ
98#define AUTOSENSE
99
100#include <linux/config.h>
101
102#ifdef CONFIG_SCSI_GENERIC_NCR53C400
103#define NCR53C400_PSEUDO_DMA 1
104#define PSEUDO_DMA
105#define NCR53C400
106#define NCR5380_STATS
107#undef NCR5380_STAT_LIMIT
108#endif
109
110#include <asm/system.h>
111#include <asm/io.h>
112#include <linux/signal.h>
113#include <linux/sched.h>
114#include <linux/blk.h>
115#include "scsi.h"
116#include "hosts.h"
117#include "g_NCR5380.h"
118#include "NCR5380.h"
119#include <linux/stat.h>
120#include <linux/init.h>
121#include <linux/ioport.h>
122#include <linux/isapnp.h>
123#include <linux/delay.h>
124#include <linux/interrupt.h>
125
126#define NCR_NOT_SET 0
127static int ncr_irq = NCR_NOT_SET;
128static int ncr_dma = NCR_NOT_SET;
129static int ncr_addr = NCR_NOT_SET;
130static int ncr_5380 = NCR_NOT_SET;
131static int ncr_53c400 = NCR_NOT_SET;
132static int ncr_53c400a = NCR_NOT_SET;
133static int dtc_3181e = NCR_NOT_SET;
134
135static struct override {
136 NCR5380_implementation_fields;
137 int irq;
138 int dma;
139 int board; /* Use NCR53c400, Ricoh, etc. extensions ? */
140} overrides
141#ifdef GENERIC_NCR5380_OVERRIDE
142[] __initdata = GENERIC_NCR5380_OVERRIDE;
143#else
144[1] __initdata = { { 0,},};
145#endif
146
147
148#define NO_OVERRIDES (sizeof(overrides) / sizeof(struct override))
149
150#ifndef MODULE
151
152/**
153 * internal_setup - handle lilo command string override
154 * @board: BOARD_* identifier for the board
155 * @str: unused
156 * @ints: numeric parameters
157 *
158 * Do LILO command line initialization of the overrides array. Display
159 * errors when needed
160 *
161 * Locks: none
162 */
163
164static void __init internal_setup(int board, char *str, int *ints)
165{
166 static int commandline_current = 0;
167 switch (board) {
168 case BOARD_NCR5380:
169 if (ints[0] != 2 && ints[0] != 3) {
170 printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n");
171 return;
172 }
173 break;
174 case BOARD_NCR53C400:
175 if (ints[0] != 2) {
176 printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n");
177 return;
178 }
179 break;
180 case BOARD_NCR53C400A:
181 if (ints[0] != 2) {
182 printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n");
183 return;
184 }
185 break;
186 case BOARD_DTC3181E:
187 if (ints[0] != 2) {
188 printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n");
189 return;
190 }
191 break;
192 }
193
194 if (commandline_current < NO_OVERRIDES) {
195 overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1];
196 overrides[commandline_current].irq = ints[2];
197 if (ints[0] == 3)
198 overrides[commandline_current].dma = ints[3];
199 else
200 overrides[commandline_current].dma = DMA_NONE;
201 overrides[commandline_current].board = board;
202 ++commandline_current;
203 }
204}
205
206
207/**
208 * do_NCR53C80_setup - set up entry point
209 * @str: unused
210 *
211 * Setup function invoked at boot to parse the ncr5380= command
212 * line.
213 */
214
215static int __init do_NCR5380_setup(char *str)
216{
217 int ints[10];
218
219 get_options(str, sizeof(ints) / sizeof(int), ints);
220 internal_setup(BOARD_NCR5380, str, ints);
221 return 1;
222}
223
224/**
225 * do_NCR53C400_setup - set up entry point
226 * @str: unused
227 * @ints: integer parameters from kernel setup code
228 *
229 * Setup function invoked at boot to parse the ncr53c400= command
230 * line.
231 */
232
233static int __init do_NCR53C400_setup(char *str)
234{
235 int ints[10];
236
237 get_options(str, sizeof(ints) / sizeof(int), ints);
238 internal_setup(BOARD_NCR53C400, str, ints);
239 return 1;
240}
241
242/**
243 * do_NCR53C400A_setup - set up entry point
244 * @str: unused
245 * @ints: integer parameters from kernel setup code
246 *
247 * Setup function invoked at boot to parse the ncr53c400a= command
248 * line.
249 */
250
251static int __init do_NCR53C400A_setup(char *str)
252{
253 int ints[10];
254
255 get_options(str, sizeof(ints) / sizeof(int), ints);
256 internal_setup(BOARD_NCR53C400A, str, ints);
257 return 1;
258}
259
260/**
261 * do_DTC3181E_setup - set up entry point
262 * @str: unused
263 * @ints: integer parameters from kernel setup code
264 *
265 * Setup function invoked at boot to parse the dtc3181e= command
266 * line.
267 */
268
269static int __init do_DTC3181E_setup(char *str)
270{
271 int ints[10];
272
273 get_options(str, sizeof(ints) / sizeof(int), ints);
274 internal_setup(BOARD_DTC3181E, str, ints);
275 return 1;
276}
277
278#endif
279
280/**
281 * generic_NCR5380_detect - look for NCR5380 controllers
282 * @tpnt: the scsi template
283 *
284 * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E
285 * and DTC436(ISAPnP) controllers. If overrides have been set we use
286 * them.
287 *
288 * The caller supplied NCR5380_init function is invoked from here, before
289 * the interrupt line is taken.
290 *
291 * Locks: none
292 */
293
294int __init generic_NCR5380_detect(Scsi_Host_Template * tpnt)
295{
296 static int current_override = 0;
297 int count, i;
298 unsigned int *ports;
299 static unsigned int __initdata ncr_53c400a_ports[] = {
300 0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0
301 };
302 static unsigned int __initdata dtc_3181e_ports[] = {
303 0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0
304 };
305 int flags = 0;
306 struct Scsi_Host *instance;
307
308 if (ncr_irq != NCR_NOT_SET)
309 overrides[0].irq = ncr_irq;
310 if (ncr_dma != NCR_NOT_SET)
311 overrides[0].dma = ncr_dma;
312 if (ncr_addr != NCR_NOT_SET)
313 overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr;
314 if (ncr_5380 != NCR_NOT_SET)
315 overrides[0].board = BOARD_NCR5380;
316 else if (ncr_53c400 != NCR_NOT_SET)
317 overrides[0].board = BOARD_NCR53C400;
318 else if (ncr_53c400a != NCR_NOT_SET)
319 overrides[0].board = BOARD_NCR53C400A;
320 else if (dtc_3181e != NCR_NOT_SET)
321 overrides[0].board = BOARD_DTC3181E;
322
323 if (!current_override && isapnp_present()) {
324 struct pnp_dev *dev = NULL;
325 count = 0;
326 while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) {
327 if (count >= NO_OVERRIDES)
328 break;
329 if (pnp_device_attach(dev) < 0) {
330 printk(KERN_ERR "dtc436e probe: attach failed\n");
331 continue;
332 }
333 if (pnp_activate_dev(dev) < 0) {
334 printk(KERN_ERR "dtc436e probe: activate failed\n");
335 pnp_device_detach(dev);
336 continue;
337 }
338 if (!pnp_port_valid(dev, 0)) {
339 printk(KERN_ERR "dtc436e probe: no valid port\n");
340 pnp_device_detach(dev);
341 continue;
342 }
343 if (pnp_irq_valid(dev, 0))
344 overrides[count].irq = pnp_irq(dev, 0);
345 else
346 overrides[count].irq = SCSI_IRQ_NONE;
347 if (pnp_dma_valid(dev, 0))
348 overrides[count].dma = pnp_dma(dev, 0);
349 else
350 overrides[count].dma = DMA_NONE;
351 overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0);
352 overrides[count].board = BOARD_DTC3181E;
353 count++;
354 }
355 }
356
357 tpnt->proc_name = "g_NCR5380";
358
359 for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
360 if (!(overrides[current_override].NCR5380_map_name))
361 continue;
362
363 ports = 0;
364 switch (overrides[current_override].board) {
365 case BOARD_NCR5380:
366 flags = FLAG_NO_PSEUDO_DMA;
367 break;
368 case BOARD_NCR53C400:
369 flags = FLAG_NCR53C400;
370 break;
371 case BOARD_NCR53C400A:
372 flags = FLAG_NO_PSEUDO_DMA;
373 ports = ncr_53c400a_ports;
374 break;
375 case BOARD_DTC3181E:
376 flags = FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E;
377 ports = dtc_3181e_ports;
378 break;
379 }
380
381#ifndef CONFIG_SCSI_G_NCR5380_MEM
382 if (ports) {
383 /* wakeup sequence for the NCR53C400A and DTC3181E */
384
385 /* Disable the adapter and look for a free io port */
386 outb(0x59, 0x779);
387 outb(0xb9, 0x379);
388 outb(0xc5, 0x379);
389 outb(0xae, 0x379);
390 outb(0xa6, 0x379);
391 outb(0x00, 0x379);
392
393 if (overrides[current_override].NCR5380_map_name != PORT_AUTO)
394 for (i = 0; ports[i]; i++) {
395 if (overrides[current_override].NCR5380_map_name == ports[i])
396 break;
397 } else
398 for (i = 0; ports[i]; i++) {
399 if ((!check_region(ports[i], 16)) && (inb(ports[i]) == 0xff))
400 break;
401 }
402 if (ports[i]) {
403 outb(0x59, 0x779);
404 outb(0xb9, 0x379);
405 outb(0xc5, 0x379);
406 outb(0xae, 0x379);
407 outb(0xa6, 0x379);
408 outb(0x80 | i, 0x379); /* set io port to be used */
409 outb(0xc0, ports[i] + 9);
410 if (inb(ports[i] + 9) != 0x80)
411 continue;
412 else
413 overrides[current_override].NCR5380_map_name = ports[i];
414 } else
415 continue;
416 }
417
418 request_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380");
419#else
420 if (check_mem_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size))
421 continue;
422 request_mem_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380");
423#endif
424 instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata));
425 if (instance == NULL) {
426#ifndef CONFIG_SCSI_G_NCR5380_MEM
427 release_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size);
428#else
429 release_mem_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size);
430#endif
431 continue;
432 }
433
434 instance->NCR5380_instance_name = overrides[current_override].NCR5380_map_name;
435
436 NCR5380_init(instance, flags);
437
438 if (overrides[current_override].irq != IRQ_AUTO)
439 instance->irq = overrides[current_override].irq;
440 else
441 instance->irq = NCR5380_probe_irq(instance, 0xffff);
442
443 if (instance->irq != SCSI_IRQ_NONE)
444 if (request_irq(instance->irq, generic_NCR5380_intr, SA_INTERRUPT, "NCR5380", NULL)) {
445 printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq);
446 instance->irq = SCSI_IRQ_NONE;
447 }
448
449 if (instance->irq == SCSI_IRQ_NONE) {
450 printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
451 printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
452 }
453
454 printk(KERN_INFO "scsi%d : at " STRVAL(NCR5380_map_name) " 0x%x", instance->host_no, (unsigned int) instance->NCR5380_instance_name);
455 if (instance->irq == SCSI_IRQ_NONE)
456 printk(" interrupts disabled");
457 else
458 printk(" irq %d", instance->irq);
459 printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", CAN_QUEUE, CMD_PER_LUN, GENERIC_NCR5380_PUBLIC_RELEASE);
460 NCR5380_print_options(instance);
461 printk("\n");
462
463 ++current_override;
464 ++count;
465 }
466 return count;
467}
468
469/**
470 * generic_NCR5380_info - reporting string
471 * @host: NCR5380 to report on
472 *
473 * Report driver information for the NCR5380
474 */
475
476const char *generic_NCR5380_info(struct Scsi_Host *host)
477{
478 static const char string[] = "Generic NCR5380/53C400 Driver";
479 return string;
480}
481
482/**
483 * generic_NCR5380_release_resources - free resources
484 * @instance: host adapter to clean up
485 *
486 * Free the generic interface resources from this adapter.
487 *
488 * Locks: none
489 */
490
491int generic_NCR5380_release_resources(struct Scsi_Host *instance)
492{
493 NCR5380_local_declare();
494 NCR5380_setup(instance);
495
496#ifndef CONFIG_SCSI_G_NCR5380_MEM
497 release_region(instance->NCR5380_instance_name, NCR5380_region_size);
498#else
499 release_mem_region(instance->NCR5380_instance_name, NCR5380_region_size);
500#endif
501
502 if (instance->irq != SCSI_IRQ_NONE)
503 free_irq(instance->irq, NULL);
504
505 return 0;
506}
507
508#ifdef BIOSPARAM
509/**
510 * generic_NCR5380_biosparam
511 * @disk: disk to compute geometry for
512 * @dev: device identifier for this disk
513 * @ip: sizes to fill in
514 *
515 * Generates a BIOS / DOS compatible H-C-S mapping for the specified
516 * device / size.
517 *
518 * XXX Most SCSI boards use this mapping, I could be incorrect. Someone
519 * using hard disks on a trantor should verify that this mapping
520 * corresponds to that used by the BIOS / ASPI driver by running the linux
521 * fdisk program and matching the H_C_S coordinates to what DOS uses.
522 *
523 * Locks: none
524 */
525
526int generic_NCR5380_biosparam(struct scsi_device *sdev,
527 struct block_device *bdev, sector_t capacity, int *ip)
528{
529 ip[0] = 64;
530 ip[1] = 32;
531 ip[2] = capacity >> 11;
532 return 0;
533}
534#endif
535
536#if NCR53C400_PSEUDO_DMA
537
538/**
539 * NCR5380_pread - pseudo DMA read
540 * @instance: adapter to read from
541 * @dst: buffer to read into
542 * @len: buffer length
543 *
544 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent
545 * controller
546 */
547
548static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len)
549{
550 int blocks = len / 128;
551 int start = 0;
552 int bl;
553
554 NCR5380_local_declare();
555 NCR5380_setup(instance);
556
557 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR);
558 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
559 while (1) {
560 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
561 break;
562 }
563 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
564 printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
565 return -1;
566 }
567 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY);
568
569#ifndef CONFIG_SCSI_G_NCR5380_MEM
570 {
571 int i;
572 for (i = 0; i < 128; i++)
573 dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
574 }
575#else
576 /* implies CONFIG_SCSI_G_NCR5380_MEM */
577 isa_memcpy_fromio(dst + start, NCR53C400_host_buffer + NCR5380_map_name, 128);
578#endif
579 start += 128;
580 blocks--;
581 }
582
583 if (blocks) {
584 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
585 {
586 // FIXME - no timeout
587 }
588
589#ifndef CONFIG_SCSI_G_NCR5380_MEM
590 {
591 int i;
592 for (i = 0; i < 128; i++)
593 dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
594 }
595#else
596 /* implies CONFIG_SCSI_G_NCR5380_MEM */
597 isa_memcpy_fromio(dst + start, NCR53C400_host_buffer + NCR5380_map_name, 128);
598#endif
599 start += 128;
600 blocks--;
601 }
602
603 if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
604 printk("53C400r: no 53C80 gated irq after transfer");
605
606#if 0
607 /*
608 * DON'T DO THIS - THEY NEVER ARRIVE!
609 */
610 printk("53C400r: Waiting for 53C80 registers\n");
611 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG)
612 ;
613#endif
614 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER))
615 printk(KERN_ERR "53C400r: no end dma signal\n");
616
617 NCR5380_write(MODE_REG, MR_BASE);
618 NCR5380_read(RESET_PARITY_INTERRUPT_REG);
619 return 0;
620}
621
622/**
623 * NCR5380_write - pseudo DMA write
624 * @instance: adapter to read from
625 * @dst: buffer to read into
626 * @len: buffer length
627 *
628 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent
629 * controller
630 */
631
632static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len)
633{
634 int blocks = len / 128;
635 int start = 0;
636 int bl;
637 int i;
638
639 NCR5380_local_declare();
640 NCR5380_setup(instance);
641
642 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE);
643 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
644 while (1) {
645 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
646 printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
647 return -1;
648 }
649
650 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
651 break;
652 }
653 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
654 ; // FIXME - timeout
655#ifndef CONFIG_SCSI_G_NCR5380_MEM
656 {
657 for (i = 0; i < 128; i++)
658 NCR5380_write(C400_HOST_BUFFER, src[start + i]);
659 }
660#else
661 /* implies CONFIG_SCSI_G_NCR5380_MEM */
662 isa_memcpy_toio(NCR53C400_host_buffer + NCR5380_map_name, src + start, 128);
663#endif
664 start += 128;
665 blocks--;
666 }
667 if (blocks) {
668 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
669 ; // FIXME - no timeout
670
671#ifndef CONFIG_SCSI_G_NCR5380_MEM
672 {
673 for (i = 0; i < 128; i++)
674 NCR5380_write(C400_HOST_BUFFER, src[start + i]);
675 }
676#else
677 /* implies CONFIG_SCSI_G_NCR5380_MEM */
678 isa_memcpy_toio(NCR53C400_host_buffer + NCR5380_map_name, src + start, 128);
679#endif
680 start += 128;
681 blocks--;
682 }
683
684#if 0
685 printk("53C400w: waiting for registers to be available\n");
686 THEY NEVER DO ! while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG);
687 printk("53C400w: Got em\n");
688#endif
689
690 /* Let's wait for this instead - could be ugly */
691 /* All documentation says to check for this. Maybe my hardware is too
692 * fast. Waiting for it seems to work fine! KLL
693 */
694 while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
695 ; // FIXME - no timeout
696
697 /*
698 * I know. i is certainly != 0 here but the loop is new. See previous
699 * comment.
700 */
701 if (i) {
702 if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER))
703 printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i);
704 } else
705 printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n");
706
707#if 0
708 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) {
709 printk(KERN_ERR "53C400w: no end dma signal\n");
710 }
711#endif
712 while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT))
713 ; // TIMEOUT
714 return 0;
715}
716#endif /* PSEUDO_DMA */
717
718/*
719 * Include the NCR5380 core code that we build our driver around
720 */
721
722#include "NCR5380.c"
723
724#define PRINTP(x) len += sprintf(buffer+len, x)
725#define ANDP ,
726
727static int sprint_opcode(char *buffer, int len, int opcode)
728{
729 int start = len;
730 PRINTP("0x%02x " ANDP opcode);
731 return len - start;
732}
733
734static int sprint_command(char *buffer, int len, unsigned char *command)
735{
736 int i, s, start = len;
737 len += sprint_opcode(buffer, len, command[0]);
738 for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i)
739 PRINTP("%02x " ANDP command[i]);
740 PRINTP("\n");
741 return len - start;
742}
743
744/**
745 * sprintf_Scsi_Cmnd - print a scsi command
746 * @buffer: buffr to print into
747 * @len: buffer length
748 * @cmd: SCSI command block
749 *
750 * Print out the target and command data in hex
751 */
752
753static int sprint_Scsi_Cmnd(char *buffer, int len, Scsi_Cmnd * cmd)
754{
755 int start = len;
756 PRINTP("host number %d destination target %d, lun %d\n" ANDP cmd->device->host->host_no ANDP cmd->device->id ANDP cmd->device->lun);
757 PRINTP(" command = ");
758 len += sprint_command(buffer, len, cmd->cmnd);
759 return len - start;
760}
761
762/**
763 * generic_NCR5380_proc_info - /proc for NCR5380 driver
764 * @buffer: buffer to print into
765 * @start: start position
766 * @offset: offset into buffer
767 * @len: length
768 * @hostno: instance to affect
769 * @inout: read/write
770 *
771 * Provide the procfs information for the 5380 controller. We fill
772 * this with useful debugging information including the commands
773 * being executed, disconnected command queue and the statistical
774 * data
775 *
776 * Locks: global cli/lock for queue walk
777 */
778
779int generic_NCR5380_proc_info(char *buffer, char **start, off_t offset, int length, int hostno, int inout)
780{
781 int len = 0;
782 NCR5380_local_declare();
783 unsigned long flags;
784 unsigned char status;
785 int i;
786 struct Scsi_Host *scsi_ptr;
787 Scsi_Cmnd *ptr;
788 struct NCR5380_hostdata *hostdata;
789#ifdef NCR5380_STATS
790 Scsi_Device *dev;
791 extern const char *const scsi_device_types[MAX_SCSI_DEVICE_CODE];
792#endif
793
794 /* For now this is constant so we may walk it */
795 scsi_ptr = scsi_host_hn_get(hostno);
796
797 NCR5380_setup(scsi_ptr);
798 hostdata = (struct NCR5380_hostdata *) scsi_ptr->hostdata;
799
800 spin_lock_irqsave(scsi_ptr->host_lock, flags);
801 PRINTP("SCSI host number %d : %s\n" ANDP scsi_ptr->host_no ANDP scsi_ptr->hostt->name);
802 PRINTP("Generic NCR5380 driver version %d\n" ANDP GENERIC_NCR5380_PUBLIC_RELEASE);
803 PRINTP("NCR5380 core version %d\n" ANDP NCR5380_PUBLIC_RELEASE);
804#ifdef NCR53C400
805 PRINTP("NCR53C400 extension version %d\n" ANDP NCR53C400_PUBLIC_RELEASE);
806 PRINTP("NCR53C400 card%s detected\n" ANDP(((struct NCR5380_hostdata *) scsi_ptr->hostdata)->flags & FLAG_NCR53C400) ? "" : " not");
807# if NCR53C400_PSEUDO_DMA
808 PRINTP("NCR53C400 pseudo DMA used\n");
809# endif
810#else
811 PRINTP("NO NCR53C400 driver extensions\n");
812#endif
813 PRINTP("Using %s mapping at %s 0x%lx, " ANDP STRVAL(NCR5380_map_config) ANDP STRVAL(NCR5380_map_name) ANDP scsi_ptr->NCR5380_instance_name);
814 if (scsi_ptr->irq == SCSI_IRQ_NONE)
815 PRINTP("no interrupt\n");
816 else
817 PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq);
818
819#ifdef NCR5380_STATS
820 if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue)
821 PRINTP("There are commands pending, transfer rates may be crud\n");
822 if (hostdata->pendingr)
823 PRINTP(" %d pending reads" ANDP hostdata->pendingr);
824 if (hostdata->pendingw)
825 PRINTP(" %d pending writes" ANDP hostdata->pendingw);
826 if (hostdata->pendingr || hostdata->pendingw)
827 PRINTP("\n");
828 list_for_each_entry (dev, &scsi_ptr->my_devices, siblings) {
829 unsigned long br = hostdata->bytes_read[dev->id];
830 unsigned long bw = hostdata->bytes_write[dev->id];
831 long tr = hostdata->time_read[dev->id] / HZ;
832 long tw = hostdata->time_write[dev->id] / HZ;
833
834 PRINTP(" T:%d %s " ANDP dev->id ANDP(dev->type < MAX_SCSI_DEVICE_CODE) ? scsi_device_types[(int) dev->type] : "Unknown");
835 for (i = 0; i < 8; i++)
836 if (dev->vendor[i] >= 0x20)
837 *(buffer + (len++)) = dev->vendor[i];
838 *(buffer + (len++)) = ' ';
839 for (i = 0; i < 16; i++)
840 if (dev->model[i] >= 0x20)
841 *(buffer + (len++)) = dev->model[i];
842 *(buffer + (len++)) = ' ';
843 for (i = 0; i < 4; i++)
844 if (dev->rev[i] >= 0x20)
845 *(buffer + (len++)) = dev->rev[i];
846 *(buffer + (len++)) = ' ';
847
848 PRINTP("\n%10ld kb read in %5ld secs" ANDP br / 1024 ANDP tr);
849 if (tr)
850 PRINTP(" @ %5ld bps" ANDP br / tr);
851
852 PRINTP("\n%10ld kb written in %5ld secs" ANDP bw / 1024 ANDP tw);
853 if (tw)
854 PRINTP(" @ %5ld bps" ANDP bw / tw);
855 PRINTP("\n");
856 }
857#endif
858
859 status = NCR5380_read(STATUS_REG);
860 if (!(status & SR_REQ))
861 PRINTP("REQ not asserted, phase unknown.\n");
862 else {
863 for (i = 0; (phases[i].value != PHASE_UNKNOWN) && (phases[i].value != (status & PHASE_MASK)); ++i);
864 PRINTP("Phase %s\n" ANDP phases[i].name);
865 }
866
867 if (!hostdata->connected) {
868 PRINTP("No currently connected command\n");
869 } else {
870 len += sprint_Scsi_Cmnd(buffer, len, (Scsi_Cmnd *) hostdata->connected);
871 }
872
873 PRINTP("issue_queue\n");
874
875 for (ptr = (Scsi_Cmnd *) hostdata->issue_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble)
876 len += sprint_Scsi_Cmnd(buffer, len, ptr);
877
878 PRINTP("disconnected_queue\n");
879
880 for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble)
881 len += sprint_Scsi_Cmnd(buffer, len, ptr);
882
883 *start = buffer + offset;
884 len -= offset;
885 if (len > length)
886 len = length;
887 spin_unlock_irqrestore(scsi_ptr->host_lock, flags);
888 return len;
889}
890
891#undef PRINTP
892#undef ANDP
893
894static Scsi_Host_Template driver_template = {
895 .proc_info = generic_NCR5380_proc_info,
896 .name = "Generic NCR5380/NCR53C400 Scsi Driver",
897 .detect = generic_NCR5380_detect,
898 .release = generic_NCR5380_release_resources,
899 .info = generic_NCR5380_info,
900 .queuecommand = generic_NCR5380_queue_command,
901 .eh_abort_handler = generic_NCR5380_abort,
902 .eh_bus_reset_handler = generic_NCR5380_bus_reset,
903 .eh_device_reset_handler = generic_NCR5380_device_reset,
904 .eh_host_reset_handler = generic_NCR5380_host_reset,
905 .bios_param = NCR5380_BIOSPARAM,
906 .can_queue = CAN_QUEUE,
907 .this_id = 7,
908 .sg_tablesize = SG_ALL,
909 .cmd_per_lun = CMD_PER_LUN,
910 .use_clustering = DISABLE_CLUSTERING,
911};
912#include <linux/module.h>
913#include "scsi_module.c"
914
915MODULE_PARM(ncr_irq, "i");
916MODULE_PARM(ncr_dma, "i");
917MODULE_PARM(ncr_addr, "i");
918MODULE_PARM(ncr_5380, "i");
919MODULE_PARM(ncr_53c400, "i");
920MODULE_PARM(ncr_53c400a, "i");
921MODULE_PARM(dtc_3181e, "i");
922MODULE_LICENSE("GPL");
923
924
925static struct isapnp_device_id id_table[] __devinitdata = {
926 {
927 ISAPNP_ANY_ID, ISAPNP_ANY_ID,
928 ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e),
929 0},
930 {0}
931};
932
933MODULE_DEVICE_TABLE(isapnp, id_table);
934
935
936__setup("ncr5380=", do_NCR5380_setup);
937__setup("ncr53c400=", do_NCR53C400_setup);
938__setup("ncr53c400a=", do_NCR53C400A_setup);
939__setup("dtc3181e=", do_DTC3181E_setup);
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