1 /*
2 * Generic Generic NCR5380 driver
3 *
4 * Copyright 1993, Drew Eckhardt
5 * Visionary Computing
6 * (Unix and Linux consulting and custom programming)
7 * drew@colorado.edu
8 * +1 (303) 440-4894
9 *
10 * NCR53C400 extensions (c) 1994,1995,1996, Kevin Lentin
11 * K.Lentin@cs.monash.edu.au
12 *
13 * NCR53C400A extensions (c) 1996, Ingmar Baumgart
14 * ingmar@gonzo.schwaben.de
15 *
16 * DTC3181E extensions (c) 1997, Ronald van Cuijlenborg
17 * ronald.van.cuijlenborg@tip.nl or nutty@dds.nl
18 *
19 * Added ISAPNP support for DTC436 adapters,
20 * Thomas Sailer, sailer@ife.ee.ethz.ch
21 *
22 * ALPHA RELEASE 1.
23 *
24 * For more information, please consult
25 *
26 * NCR 5380 Family
27 * SCSI Protocol Controller
28 * Databook
29 *
30 * NCR Microelectronics
31 * 1635 Aeroplaza Drive
32 * Colorado Springs, CO 80916
33 * 1+ (719) 578-3400
34 * 1+ (800) 334-5454
35 */
36
37 /*
38 * TODO : flesh out DMA support, find some one actually using this (I have
39 * a memory mapped Trantor board that works fine)
40 */
41
42 /*
43 * Options :
44 *
45 * PARITY - enable parity checking. Not supported.
46 *
47 * SCSI2 - enable support for SCSI-II tagged queueing. Untested.
48 *
49 * USLEEP - enable support for devices that don't disconnect. Untested.
50 *
51 * The card is detected and initialized in one of several ways :
52 * 1. With command line overrides - NCR5380=port,irq may be
53 * used on the LILO command line to override the defaults.
54 *
55 * 2. With the GENERIC_NCR5380_OVERRIDE compile time define. This is
56 * specified as an array of address, irq, dma, board tuples. Ie, for
57 * one board at 0x350, IRQ5, no dma, I could say
58 * -DGENERIC_NCR5380_OVERRIDE={{0xcc000, 5, DMA_NONE, BOARD_NCR5380}}
59 *
60 * -1 should be specified for no or DMA interrupt, -2 to autoprobe for an
61 * IRQ line if overridden on the command line.
62 *
63 * 3. When included as a module, with arguments passed on the command line:
64 * ncr_irq=xx the interrupt
65 * ncr_addr=xx the port or base address (for port or memory
66 * mapped, resp.)
67 * ncr_dma=xx the DMA
68 * ncr_5380=1 to set up for a NCR5380 board
69 * ncr_53c400=1 to set up for a NCR53C400 board
70 * e.g.
71 * modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_5380=1
72 * for a port mapped NCR5380 board or
73 * modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1
74 * for a memory mapped NCR53C400 board with interrupts disabled.
75 *
76 * 255 should be specified for no or DMA interrupt, 254 to autoprobe for an
77 * IRQ line if overridden on the command line.
78 *
79 */
80
81 /*
82 * $Log: generic_NCR5380.c,v $
83 */
84
85 /* settings for DTC3181E card with only Mustek scanner attached */
86 #define USLEEP
87 #define USLEEP_POLL 1
88 #define USLEEP_SLEEP 20
89 #define USLEEP_WAITLONG 500
90
91 #define AUTOPROBE_IRQ
92 #define AUTOSENSE
93
94
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/io.h>
104 #include <linux/signal.h>
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
118 static int ncr_irq = NCR_NOT_SET;
119 static int ncr_dma = NCR_NOT_SET;
120 static int ncr_addr = NCR_NOT_SET;
121 static int ncr_5380 = NCR_NOT_SET;
122 static int ncr_53c400 = NCR_NOT_SET;
123 static int ncr_53c400a = NCR_NOT_SET;
124 static int dtc_3181e = NCR_NOT_SET;
125
126 static struct override {
127 NCR5380_map_type NCR5380_map_name;
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
138 #define NO_OVERRIDES ARRAY_SIZE(overrides)
139
140 #ifndef MODULE
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
internal_setup(int board,char * str,int * ints)154 static 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
do_NCR5380_setup(char * str)205 static int __init do_NCR5380_setup(char *str)
206 {
207 int ints[10];
208
209 get_options(str, ARRAY_SIZE(ints), ints);
210 internal_setup(BOARD_NCR5380, str, ints);
211 return 1;
212 }
213
214 /**
215 * do_NCR53C400_setup - set up entry point
216 * @str: unused
217 * @ints: integer parameters from kernel setup code
218 *
219 * Setup function invoked at boot to parse the ncr53c400= command
220 * line.
221 */
222
do_NCR53C400_setup(char * str)223 static int __init do_NCR53C400_setup(char *str)
224 {
225 int ints[10];
226
227 get_options(str, ARRAY_SIZE(ints), ints);
228 internal_setup(BOARD_NCR53C400, str, ints);
229 return 1;
230 }
231
232 /**
233 * do_NCR53C400A_setup - set up entry point
234 * @str: unused
235 * @ints: integer parameters from kernel setup code
236 *
237 * Setup function invoked at boot to parse the ncr53c400a= command
238 * line.
239 */
240
do_NCR53C400A_setup(char * str)241 static int __init do_NCR53C400A_setup(char *str)
242 {
243 int ints[10];
244
245 get_options(str, ARRAY_SIZE(ints), ints);
246 internal_setup(BOARD_NCR53C400A, str, ints);
247 return 1;
248 }
249
250 /**
251 * do_DTC3181E_setup - set up entry point
252 * @str: unused
253 * @ints: integer parameters from kernel setup code
254 *
255 * Setup function invoked at boot to parse the dtc3181e= command
256 * line.
257 */
258
do_DTC3181E_setup(char * str)259 static int __init do_DTC3181E_setup(char *str)
260 {
261 int ints[10];
262
263 get_options(str, ARRAY_SIZE(ints), ints);
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
generic_NCR5380_detect(struct scsi_host_template * tpnt)284 int __init generic_NCR5380_detect(struct scsi_host_template * tpnt)
285 {
286 static int current_override = 0;
287 int count;
288 unsigned int *ports;
289 #ifndef SCSI_G_NCR5380_MEM
290 int i;
291 unsigned long region_size = 16;
292 #endif
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;
301 #ifdef SCSI_G_NCR5380_MEM
302 unsigned long base;
303 void __iomem *iomem;
304 #endif
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;
320 #ifndef SCSI_G_NCR5380_MEM
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;
327 if (pnp_device_attach(dev) < 0)
328 continue;
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 #endif
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 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
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);
434 continue;
435 }
436 #endif
437 instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata));
438 if (instance == NULL) {
439 #ifndef SCSI_G_NCR5380_MEM
440 release_region(overrides[current_override].NCR5380_map_name, region_size);
441 #else
442 iounmap(iomem);
443 release_mem_region(base, NCR5380_region_size);
444 #endif
445 continue;
446 }
447
448 instance->NCR5380_instance_name = overrides[current_override].NCR5380_map_name;
449 #ifndef SCSI_G_NCR5380_MEM
450 instance->n_io_port = region_size;
451 #else
452 ((struct NCR5380_hostdata *)instance->hostdata)->iomem = iomem;
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)
463 if (request_irq(instance->irq, generic_NCR5380_intr,
464 IRQF_DISABLED, "NCR5380", instance)) {
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
generic_NCR5380_info(struct Scsi_Host * host)496 const 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
generic_NCR5380_release_resources(struct Scsi_Host * instance)511 int 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)
517 free_irq(instance->irq, instance);
518 NCR5380_exit(instance);
519
520 #ifndef SCSI_G_NCR5380_MEM
521 release_region(instance->NCR5380_instance_name, instance->n_io_port);
522 #else
523 iounmap(((struct NCR5380_hostdata *)instance->hostdata)->iomem);
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
549 static int
generic_NCR5380_biosparam(struct scsi_device * sdev,struct block_device * bdev,sector_t capacity,int * ip)550 generic_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
560 #ifdef NCR53C400_PSEUDO_DMA
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 *
568 * Perform a pseudo DMA mode read from an NCR53C400 or equivalent
569 * controller
570 */
571
NCR5380_pread(struct Scsi_Host * instance,unsigned char * dst,int len)572 static 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
593 #ifndef SCSI_G_NCR5380_MEM
594 {
595 int i;
596 for (i = 0; i < 128; i++)
597 dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
598 }
599 #else
600 /* implies SCSI_G_NCR5380_MEM */
601 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128);
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
613 #ifndef SCSI_G_NCR5380_MEM
614 {
615 int i;
616 for (i = 0; i < 128; i++)
617 dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
618 }
619 #else
620 /* implies SCSI_G_NCR5380_MEM */
621 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128);
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 *
652 * Perform a pseudo DMA mode read from an NCR53C400 or equivalent
653 * controller
654 */
655
NCR5380_pwrite(struct Scsi_Host * instance,unsigned char * src,int len)656 static 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
679 #ifndef SCSI_G_NCR5380_MEM
680 {
681 for (i = 0; i < 128; i++)
682 NCR5380_write(C400_HOST_BUFFER, src[start + i]);
683 }
684 #else
685 /* implies SCSI_G_NCR5380_MEM */
686 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128);
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
695 #ifndef SCSI_G_NCR5380_MEM
696 {
697 for (i = 0; i < 128; i++)
698 NCR5380_write(C400_HOST_BUFFER, src[start + i]);
699 }
700 #else
701 /* implies SCSI_G_NCR5380_MEM */
702 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128);
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
748 #define PRINTP(x) len += sprintf(buffer+len, x)
749 #define ANDP ,
750
sprint_opcode(char * buffer,int len,int opcode)751 static int sprint_opcode(char *buffer, int len, int opcode)
752 {
753 int start = len;
754 PRINTP("0x%02x " ANDP opcode);
755 return len - start;
756 }
757
sprint_command(char * buffer,int len,unsigned char * command)758 static int sprint_command(char *buffer, int len, unsigned char *command)
759 {
760 int i, s, start = len;
761 len += sprint_opcode(buffer, len, command[0]);
762 for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i)
763 PRINTP("%02x " ANDP command[i]);
764 PRINTP("\n");
765 return len - start;
766 }
767
768 /**
769 * sprintf_Scsi_Cmnd - print a scsi command
770 * @buffer: buffr to print into
771 * @len: buffer length
772 * @cmd: SCSI command block
773 *
774 * Print out the target and command data in hex
775 */
776
sprint_Scsi_Cmnd(char * buffer,int len,Scsi_Cmnd * cmd)777 static int sprint_Scsi_Cmnd(char *buffer, int len, Scsi_Cmnd * cmd)
778 {
779 int start = len;
780 PRINTP("host number %d destination target %d, lun %d\n" ANDP cmd->device->host->host_no ANDP cmd->device->id ANDP cmd->device->lun);
781 PRINTP(" command = ");
782 len += sprint_command(buffer, len, cmd->cmnd);
783 return len - start;
784 }
785
786 /**
787 * generic_NCR5380_proc_info - /proc for NCR5380 driver
788 * @buffer: buffer to print into
789 * @start: start position
790 * @offset: offset into buffer
791 * @len: length
792 * @hostno: instance to affect
793 * @inout: read/write
794 *
795 * Provide the procfs information for the 5380 controller. We fill
796 * this with useful debugging information including the commands
797 * being executed, disconnected command queue and the statistical
798 * data
799 *
800 * Locks: global cli/lock for queue walk
801 */
802
generic_NCR5380_proc_info(struct Scsi_Host * scsi_ptr,char * buffer,char ** start,off_t offset,int length,int inout)803 static int generic_NCR5380_proc_info(struct Scsi_Host *scsi_ptr, char *buffer, char **start, off_t offset, int length, int inout)
804 {
805 int len = 0;
806 NCR5380_local_declare();
807 unsigned long flags;
808 unsigned char status;
809 int i;
810 Scsi_Cmnd *ptr;
811 struct NCR5380_hostdata *hostdata;
812 #ifdef NCR5380_STATS
813 struct scsi_device *dev;
814 #endif
815
816 NCR5380_setup(scsi_ptr);
817 hostdata = (struct NCR5380_hostdata *) scsi_ptr->hostdata;
818
819 spin_lock_irqsave(scsi_ptr->host_lock, flags);
820 PRINTP("SCSI host number %d : %s\n" ANDP scsi_ptr->host_no ANDP scsi_ptr->hostt->name);
821 PRINTP("Generic NCR5380 driver version %d\n" ANDP GENERIC_NCR5380_PUBLIC_RELEASE);
822 PRINTP("NCR5380 core version %d\n" ANDP NCR5380_PUBLIC_RELEASE);
823 #ifdef NCR53C400
824 PRINTP("NCR53C400 extension version %d\n" ANDP NCR53C400_PUBLIC_RELEASE);
825 PRINTP("NCR53C400 card%s detected\n" ANDP(((struct NCR5380_hostdata *) scsi_ptr->hostdata)->flags & FLAG_NCR53C400) ? "" : " not");
826 # if NCR53C400_PSEUDO_DMA
827 PRINTP("NCR53C400 pseudo DMA used\n");
828 # endif
829 #else
830 PRINTP("NO NCR53C400 driver extensions\n");
831 #endif
832 PRINTP("Using %s mapping at %s 0x%lx, " ANDP STRVAL(NCR5380_map_config) ANDP STRVAL(NCR5380_map_name) ANDP scsi_ptr->NCR5380_instance_name);
833 if (scsi_ptr->irq == SCSI_IRQ_NONE)
834 PRINTP("no interrupt\n");
835 else
836 PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq);
837
838 #ifdef NCR5380_STATS
839 if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue)
840 PRINTP("There are commands pending, transfer rates may be crud\n");
841 if (hostdata->pendingr)
842 PRINTP(" %d pending reads" ANDP hostdata->pendingr);
843 if (hostdata->pendingw)
844 PRINTP(" %d pending writes" ANDP hostdata->pendingw);
845 if (hostdata->pendingr || hostdata->pendingw)
846 PRINTP("\n");
847 shost_for_each_device(dev, scsi_ptr) {
848 unsigned long br = hostdata->bytes_read[dev->id];
849 unsigned long bw = hostdata->bytes_write[dev->id];
850 long tr = hostdata->time_read[dev->id] / HZ;
851 long tw = hostdata->time_write[dev->id] / HZ;
852
853 PRINTP(" T:%d %s " ANDP dev->id ANDP scsi_device_type(dev->type));
854 for (i = 0; i < 8; i++)
855 if (dev->vendor[i] >= 0x20)
856 *(buffer + (len++)) = dev->vendor[i];
857 *(buffer + (len++)) = ' ';
858 for (i = 0; i < 16; i++)
859 if (dev->model[i] >= 0x20)
860 *(buffer + (len++)) = dev->model[i];
861 *(buffer + (len++)) = ' ';
862 for (i = 0; i < 4; i++)
863 if (dev->rev[i] >= 0x20)
864 *(buffer + (len++)) = dev->rev[i];
865 *(buffer + (len++)) = ' ';
866
867 PRINTP("\n%10ld kb read in %5ld secs" ANDP br / 1024 ANDP tr);
868 if (tr)
869 PRINTP(" @ %5ld bps" ANDP br / tr);
870
871 PRINTP("\n%10ld kb written in %5ld secs" ANDP bw / 1024 ANDP tw);
872 if (tw)
873 PRINTP(" @ %5ld bps" ANDP bw / tw);
874 PRINTP("\n");
875 }
876 #endif
877
878 status = NCR5380_read(STATUS_REG);
879 if (!(status & SR_REQ))
880 PRINTP("REQ not asserted, phase unknown.\n");
881 else {
882 for (i = 0; (phases[i].value != PHASE_UNKNOWN) && (phases[i].value != (status & PHASE_MASK)); ++i);
883 PRINTP("Phase %s\n" ANDP phases[i].name);
884 }
885
886 if (!hostdata->connected) {
887 PRINTP("No currently connected command\n");
888 } else {
889 len += sprint_Scsi_Cmnd(buffer, len, (Scsi_Cmnd *) hostdata->connected);
890 }
891
892 PRINTP("issue_queue\n");
893
894 for (ptr = (Scsi_Cmnd *) hostdata->issue_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble)
895 len += sprint_Scsi_Cmnd(buffer, len, ptr);
896
897 PRINTP("disconnected_queue\n");
898
899 for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble)
900 len += sprint_Scsi_Cmnd(buffer, len, ptr);
901
902 *start = buffer + offset;
903 len -= offset;
904 if (len > length)
905 len = length;
906 spin_unlock_irqrestore(scsi_ptr->host_lock, flags);
907 return len;
908 }
909
910 #undef PRINTP
911 #undef ANDP
912
913 static struct scsi_host_template driver_template = {
914 .proc_info = generic_NCR5380_proc_info,
915 .name = "Generic NCR5380/NCR53C400 Scsi Driver",
916 .detect = generic_NCR5380_detect,
917 .release = generic_NCR5380_release_resources,
918 .info = generic_NCR5380_info,
919 .queuecommand = generic_NCR5380_queue_command,
920 .eh_abort_handler = generic_NCR5380_abort,
921 .eh_bus_reset_handler = generic_NCR5380_bus_reset,
922 .bios_param = NCR5380_BIOSPARAM,
923 .can_queue = CAN_QUEUE,
924 .this_id = 7,
925 .sg_tablesize = SG_ALL,
926 .cmd_per_lun = CMD_PER_LUN,
927 .use_clustering = DISABLE_CLUSTERING,
928 };
929 #include <linux/module.h>
930 #include "scsi_module.c"
931
932 module_param(ncr_irq, int, 0);
933 module_param(ncr_dma, int, 0);
934 module_param(ncr_addr, int, 0);
935 module_param(ncr_5380, int, 0);
936 module_param(ncr_53c400, int, 0);
937 module_param(ncr_53c400a, int, 0);
938 module_param(dtc_3181e, int, 0);
939 MODULE_LICENSE("GPL");
940
941 #ifndef SCSI_G_NCR5380_MEM
942 static struct isapnp_device_id id_table[] __devinitdata = {
943 {
944 ISAPNP_ANY_ID, ISAPNP_ANY_ID,
945 ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e),
946 0},
947 {0}
948 };
949
950 MODULE_DEVICE_TABLE(isapnp, id_table);
951 #endif
952
953 __setup("ncr5380=", do_NCR5380_setup);
954 __setup("ncr53c400=", do_NCR53C400_setup);
955 __setup("ncr53c400a=", do_NCR53C400A_setup);
956 __setup("dtc3181e=", do_DTC3181E_setup);
957