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 #include <linux/config.h>
95
96 #ifdef CONFIG_SCSI_GENERIC_NCR53C400
97 #define NCR53C400_PSEUDO_DMA 1
98 #define PSEUDO_DMA
99 #define NCR53C400
100 #define NCR5380_STATS
101 #undef NCR5380_STAT_LIMIT
102 #endif
103 #if defined(CONFIG_SCSI_G_NCR5380_PORT) && defined(CONFIG_SCSI_G_NCR5380_MEM)
104 #error You can not configure the Generic NCR 5380 SCSI Driver for memory mapped I/O and port mapped I/O at the same time (yet)
105 #endif
106 #if !defined(CONFIG_SCSI_G_NCR5380_PORT) && !defined(CONFIG_SCSI_G_NCR5380_MEM)
107 #error You must configure the Generic NCR 5380 SCSI Driver for one of memory mapped I/O and port mapped I/O.
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 "constants.h"
120 #include "sd.h"
121 #include <linux/stat.h>
122 #include <linux/init.h>
123 #include <linux/ioport.h>
124 #include <linux/isapnp.h>
125
126 #define NCR_NOT_SET 0
127 static int ncr_irq = NCR_NOT_SET;
128 static int ncr_dma = NCR_NOT_SET;
129 static int ncr_addr = NCR_NOT_SET;
130 static int ncr_5380 = NCR_NOT_SET;
131 static int ncr_53c400 = NCR_NOT_SET;
132 static int ncr_53c400a = NCR_NOT_SET;
133 static int dtc_3181e = NCR_NOT_SET;
134
135 static 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 #define NO_OVERRIDES (sizeof(overrides) / sizeof(struct override))
148
149 /**
150 * internal_setup - handle lilo command string override
151 * @board: BOARD_* identifier for the board
152 * @str: unused
153 * @ints: numeric parameters
154 *
155 * Do LILO command line initialization of the overrides array. Display
156 * errors when needed
157 *
158 * Locks: none
159 */
160
internal_setup(int board,char * str,int * ints)161 static void __init internal_setup(int board, char *str, int *ints)
162 {
163 static int commandline_current = 0;
164 switch (board) {
165 case BOARD_NCR5380:
166 if (ints[0] != 2 && ints[0] != 3) {
167 printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n");
168 return;
169 }
170 break;
171 case BOARD_NCR53C400:
172 if (ints[0] != 2) {
173 printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n");
174 return;
175 }
176 break;
177 case BOARD_NCR53C400A:
178 if (ints[0] != 2) {
179 printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n");
180 return;
181 }
182 break;
183 case BOARD_DTC3181E:
184 if (ints[0] != 2) {
185 printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n");
186 return;
187 }
188 break;
189 }
190
191 if (commandline_current < NO_OVERRIDES) {
192 overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1];
193 overrides[commandline_current].irq = ints[2];
194 if (ints[0] == 3)
195 overrides[commandline_current].dma = ints[3];
196 else
197 overrides[commandline_current].dma = DMA_NONE;
198 overrides[commandline_current].board = board;
199 ++commandline_current;
200 }
201 }
202
203 /**
204 * do_NCR53C80_setup - set up entry point
205 * @str: unused
206 *
207 * Setup function invoked at boot to parse the ncr5380= command
208 * line.
209 */
210
do_NCR5380_setup(char * str)211 static int __init do_NCR5380_setup(char *str)
212 {
213 int ints[10];
214
215 get_options(str, sizeof(ints) / sizeof(int), ints);
216 internal_setup(BOARD_NCR5380, str, ints);
217 return 1;
218 }
219
220 /**
221 * do_NCR53C400_setup - set up entry point
222 * @str: unused
223 * @ints: integer parameters from kernel setup code
224 *
225 * Setup function invoked at boot to parse the ncr53c400= command
226 * line.
227 */
228
do_NCR53C400_setup(char * str)229 static int __init do_NCR53C400_setup(char *str)
230 {
231 int ints[10];
232
233 get_options(str, sizeof(ints) / sizeof(int), ints);
234 internal_setup(BOARD_NCR53C400, str, ints);
235 return 1;
236 }
237
238 /**
239 * do_NCR53C400A_setup - set up entry point
240 * @str: unused
241 * @ints: integer parameters from kernel setup code
242 *
243 * Setup function invoked at boot to parse the ncr53c400a= command
244 * line.
245 */
246
do_NCR53C400A_setup(char * str)247 static int __init do_NCR53C400A_setup(char *str)
248 {
249 int ints[10];
250
251 get_options(str, sizeof(ints) / sizeof(int), ints);
252 internal_setup(BOARD_NCR53C400A, str, ints);
253 return 1;
254 }
255
256 /**
257 * do_DTC3181E_setup - set up entry point
258 * @str: unused
259 * @ints: integer parameters from kernel setup code
260 *
261 * Setup function invoked at boot to parse the dtc3181e= command
262 * line.
263 */
264
do_DTC3181E_setup(char * str)265 static int __init do_DTC3181E_setup(char *str)
266 {
267 int ints[10];
268
269 get_options(str, sizeof(ints) / sizeof(int), ints);
270 internal_setup(BOARD_DTC3181E, str, ints);
271 return 1;
272 }
273
274 /**
275 * generic_NCR5380_detect - look for NCR5380 controllers
276 * @tpnt: the scsi template
277 *
278 * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E
279 * and DTC436(ISAPnP) controllers. If overrides have been set we use
280 * them.
281 *
282 * The caller supplied NCR5380_init function is invoked from here, before
283 * the interrupt line is taken.
284 *
285 * Locks: none
286 */
287
generic_NCR5380_detect(Scsi_Host_Template * tpnt)288 int __init generic_NCR5380_detect(Scsi_Host_Template * tpnt)
289 {
290 static int current_override = 0;
291 int count, i;
292 unsigned int *ports;
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
302 if (ncr_irq != NCR_NOT_SET)
303 overrides[0].irq = ncr_irq;
304 if (ncr_dma != NCR_NOT_SET)
305 overrides[0].dma = ncr_dma;
306 if (ncr_addr != NCR_NOT_SET)
307 overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr;
308 if (ncr_5380 != NCR_NOT_SET)
309 overrides[0].board = BOARD_NCR5380;
310 else if (ncr_53c400 != NCR_NOT_SET)
311 overrides[0].board = BOARD_NCR53C400;
312 else if (ncr_53c400a != NCR_NOT_SET)
313 overrides[0].board = BOARD_NCR53C400A;
314 else if (dtc_3181e != NCR_NOT_SET)
315 overrides[0].board = BOARD_DTC3181E;
316
317 if (!current_override && isapnp_present()) {
318 struct pci_dev *dev = NULL;
319 count = 0;
320 while ((dev = isapnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) {
321 if (count >= NO_OVERRIDES)
322 break;
323 if (!dev->active && dev->prepare(dev) < 0) {
324 printk(KERN_ERR "dtc436e probe: prepare failed\n");
325 continue;
326 }
327 if (!(dev->resource[0].flags & IORESOURCE_IO))
328 continue;
329 if (!dev->active && dev->activate(dev) < 0) {
330 printk(KERN_ERR "dtc436e probe: activate failed\n");
331 continue;
332 }
333 if (dev->irq_resource[0].flags & IORESOURCE_IRQ)
334 overrides[count].irq = dev->irq_resource[0].start;
335 else
336 overrides[count].irq = SCSI_IRQ_NONE;
337 if (dev->dma_resource[0].flags & IORESOURCE_DMA)
338 overrides[count].dma = dev->dma_resource[0].start;
339 else
340 overrides[count].dma = DMA_NONE;
341 overrides[count].NCR5380_map_name = (NCR5380_map_type) dev->resource[0].start;
342 overrides[count].board = BOARD_DTC3181E;
343 count++;
344 }
345 }
346
347 tpnt->proc_name = "g_NCR5380";
348
349 for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
350 if (!(overrides[current_override].NCR5380_map_name))
351 continue;
352
353 ports = 0;
354 switch (overrides[current_override].board) {
355 case BOARD_NCR5380:
356 flags = FLAG_NO_PSEUDO_DMA;
357 break;
358 case BOARD_NCR53C400:
359 flags = FLAG_NCR53C400;
360 break;
361 case BOARD_NCR53C400A:
362 flags = FLAG_NO_PSEUDO_DMA;
363 ports = ncr_53c400a_ports;
364 break;
365 case BOARD_DTC3181E:
366 flags = FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E;
367 ports = dtc_3181e_ports;
368 break;
369 }
370
371 #ifdef CONFIG_SCSI_G_NCR5380_PORT
372 if (ports) {
373 /* wakeup sequence for the NCR53C400A and DTC3181E */
374
375 /* Disable the adapter and look for a free io port */
376 outb(0x59, 0x779);
377 outb(0xb9, 0x379);
378 outb(0xc5, 0x379);
379 outb(0xae, 0x379);
380 outb(0xa6, 0x379);
381 outb(0x00, 0x379);
382
383 if (overrides[current_override].NCR5380_map_name != PORT_AUTO)
384 for (i = 0; ports[i]; i++) {
385 if (overrides[current_override].NCR5380_map_name == ports[i])
386 break;
387 } else
388 for (i = 0; ports[i]; i++) {
389 if ((!check_region(ports[i], 16)) && (inb(ports[i]) == 0xff))
390 break;
391 }
392 if (ports[i]) {
393 outb(0x59, 0x779);
394 outb(0xb9, 0x379);
395 outb(0xc5, 0x379);
396 outb(0xae, 0x379);
397 outb(0xa6, 0x379);
398 outb(0x80 | i, 0x379); /* set io port to be used */
399 outb(0xc0, ports[i] + 9);
400 if (inb(ports[i] + 9) != 0x80)
401 continue;
402 else
403 overrides[current_override].NCR5380_map_name = ports[i];
404 } else
405 continue;
406 }
407
408 request_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380");
409 #else
410 if (check_mem_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size))
411 continue;
412 request_mem_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380");
413 #endif
414 instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata));
415 if (instance == NULL) {
416 #ifdef CONFIG_SCSI_G_NCR5380_PORT
417 release_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size);
418 #else
419 release_mem_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size);
420 #endif
421 continue;
422 }
423
424 instance->NCR5380_instance_name = overrides[current_override].NCR5380_map_name;
425
426 NCR5380_init(instance, flags);
427
428 if (overrides[current_override].irq != IRQ_AUTO)
429 instance->irq = overrides[current_override].irq;
430 else
431 instance->irq = NCR5380_probe_irq(instance, 0xffff);
432
433 if (instance->irq != SCSI_IRQ_NONE)
434 if (request_irq(instance->irq, do_generic_NCR5380_intr, SA_INTERRUPT, "NCR5380", NULL)) {
435 printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq);
436 instance->irq = SCSI_IRQ_NONE;
437 }
438
439 if (instance->irq == SCSI_IRQ_NONE) {
440 printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
441 printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
442 }
443
444 printk(KERN_INFO "scsi%d : at " STRVAL(NCR5380_map_name) " 0x%x", instance->host_no, (unsigned int) instance->NCR5380_instance_name);
445 if (instance->irq == SCSI_IRQ_NONE)
446 printk(" interrupts disabled");
447 else
448 printk(" irq %d", instance->irq);
449 printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", CAN_QUEUE, CMD_PER_LUN, GENERIC_NCR5380_PUBLIC_RELEASE);
450 NCR5380_print_options(instance);
451 printk("\n");
452
453 ++current_override;
454 ++count;
455 }
456 return count;
457 }
458
459 /**
460 * generic_NCR5380_info - reporting string
461 * @host: NCR5380 to report on
462 *
463 * Report driver information for the NCR5380
464 */
465
generic_NCR5380_info(struct Scsi_Host * host)466 const char *generic_NCR5380_info(struct Scsi_Host *host)
467 {
468 static const char string[] = "Generic NCR5380/53C400 Driver";
469 return string;
470 }
471
472 /**
473 * generic_NCR5380_release_resources - free resources
474 * @instance: host adapter to clean up
475 *
476 * Free the generic interface resources from this adapter.
477 *
478 * Locks: none
479 */
480
generic_NCR5380_release_resources(struct Scsi_Host * instance)481 int generic_NCR5380_release_resources(struct Scsi_Host *instance)
482 {
483 NCR5380_local_declare();
484 NCR5380_setup(instance);
485
486 #ifdef CONFIG_SCSI_G_NCR5380_PORT
487 release_region(instance->NCR5380_instance_name, NCR5380_region_size);
488 #else
489 release_mem_region(instance->NCR5380_instance_name, NCR5380_region_size);
490 #endif
491
492 if (instance->irq != SCSI_IRQ_NONE)
493 free_irq(instance->irq, NULL);
494
495 return 0;
496 }
497
498 #ifdef BIOSPARAM
499 /**
500 * generic_NCR5380_biosparam
501 * @disk: disk to compute geometry for
502 * @dev: device identifier for this disk
503 * @ip: sizes to fill in
504 *
505 * Generates a BIOS / DOS compatible H-C-S mapping for the specified
506 * device / size.
507 *
508 * XXX Most SCSI boards use this mapping, I could be incorrect. Someone
509 * using hard disks on a trantor should verify that this mapping
510 * corresponds to that used by the BIOS / ASPI driver by running the linux
511 * fdisk program and matching the H_C_S coordinates to what DOS uses.
512 *
513 * Locks: none
514 */
515
generic_NCR5380_biosparam(Disk * disk,kdev_t dev,int * ip)516 int generic_NCR5380_biosparam(Disk * disk, kdev_t dev, int *ip)
517 {
518 int size = disk->capacity;
519 ip[0] = 64;
520 ip[1] = 32;
521 ip[2] = size >> 11;
522 return 0;
523 }
524 #endif
525
526 #if NCR53C400_PSEUDO_DMA
527
528 /**
529 * NCR5380_pread - pseudo DMA read
530 * @instance: adapter to read from
531 * @dst: buffer to read into
532 * @len: buffer length
533 *
534 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent
535 * controller
536 */
537
NCR5380_pread(struct Scsi_Host * instance,unsigned char * dst,int len)538 static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len)
539 {
540 int blocks = len / 128;
541 int start = 0;
542 int bl;
543
544 NCR5380_local_declare();
545 NCR5380_setup(instance);
546
547 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR);
548 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
549 while (1) {
550 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
551 break;
552 }
553 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
554 printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
555 return -1;
556 }
557 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY);
558
559 #ifdef CONFIG_SCSI_G_NCR5380_PORT
560 {
561 int i;
562 for (i = 0; i < 128; i++)
563 dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
564 }
565 #else
566 /* implies CONFIG_SCSI_G_NCR5380_MEM */
567 isa_memcpy_fromio(dst + start, NCR53C400_host_buffer + NCR5380_map_name, 128);
568 #endif
569 start += 128;
570 blocks--;
571 }
572
573 if (blocks) {
574 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
575 {
576 // FIXME - no timeout
577 }
578
579 #ifdef CONFIG_SCSI_G_NCR5380_PORT
580 {
581 int i;
582 for (i = 0; i < 128; i++)
583 dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
584 }
585 #else
586 /* implies CONFIG_SCSI_G_NCR5380_MEM */
587 isa_memcpy_fromio(dst + start, NCR53C400_host_buffer + NCR5380_map_name, 128);
588 #endif
589 start += 128;
590 blocks--;
591 }
592
593 if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
594 printk("53C400r: no 53C80 gated irq after transfer");
595
596 #if 0
597 /*
598 * DON'T DO THIS - THEY NEVER ARRIVE!
599 */
600 printk("53C400r: Waiting for 53C80 registers\n");
601 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG)
602 ;
603 #endif
604 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER))
605 printk(KERN_ERR "53C400r: no end dma signal\n");
606
607 NCR5380_write(MODE_REG, MR_BASE);
608 NCR5380_read(RESET_PARITY_INTERRUPT_REG);
609 return 0;
610 }
611
612 /**
613 * NCR5380_write - pseudo DMA write
614 * @instance: adapter to read from
615 * @dst: buffer to read into
616 * @len: buffer length
617 *
618 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent
619 * controller
620 */
621
NCR5380_pwrite(struct Scsi_Host * instance,unsigned char * src,int len)622 static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len)
623 {
624 int blocks = len / 128;
625 int start = 0;
626 int bl;
627 int i;
628
629 NCR5380_local_declare();
630 NCR5380_setup(instance);
631
632 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE);
633 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
634 while (1) {
635 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
636 printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
637 return -1;
638 }
639
640 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
641 break;
642 }
643 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
644 ; // FIXME - timeout
645 #ifdef CONFIG_SCSI_G_NCR5380_PORT
646 {
647 for (i = 0; i < 128; i++)
648 NCR5380_write(C400_HOST_BUFFER, src[start + i]);
649 }
650 #else
651 /* implies CONFIG_SCSI_G_NCR5380_MEM */
652 isa_memcpy_toio(NCR53C400_host_buffer + NCR5380_map_name, src + start, 128);
653 #endif
654 start += 128;
655 blocks--;
656 }
657 if (blocks) {
658 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
659 ; // FIXME - no timeout
660
661 #ifdef CONFIG_SCSI_G_NCR5380_PORT
662 {
663 for (i = 0; i < 128; i++)
664 NCR5380_write(C400_HOST_BUFFER, src[start + i]);
665 }
666 #else
667 /* implies CONFIG_SCSI_G_NCR5380_MEM */
668 isa_memcpy_toio(NCR53C400_host_buffer + NCR5380_map_name, src + start, 128);
669 #endif
670 start += 128;
671 blocks--;
672 }
673
674 #if 0
675 printk("53C400w: waiting for registers to be available\n");
676 THEY NEVER DO ! while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG);
677 printk("53C400w: Got em\n");
678 #endif
679
680 /* Let's wait for this instead - could be ugly */
681 /* All documentation says to check for this. Maybe my hardware is too
682 * fast. Waiting for it seems to work fine! KLL
683 */
684 while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
685 ; // FIXME - no timeout
686
687 /*
688 * I know. i is certainly != 0 here but the loop is new. See previous
689 * comment.
690 */
691 if (i) {
692 if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER))
693 printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i);
694 } else
695 printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n");
696
697 #if 0
698 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) {
699 printk(KERN_ERR "53C400w: no end dma signal\n");
700 }
701 #endif
702 while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT))
703 ; // TIMEOUT
704 return 0;
705 }
706 #endif /* PSEUDO_DMA */
707
708 /*
709 * Include the NCR5380 core code that we build our driver around
710 */
711
712 #include "NCR5380.c"
713
714 #define PRINTP(x) len += sprintf(buffer+len, x)
715 #define ANDP ,
716
sprint_opcode(char * buffer,int len,int opcode)717 static int sprint_opcode(char *buffer, int len, int opcode)
718 {
719 int start = len;
720 PRINTP("0x%02x " ANDP opcode);
721 return len - start;
722 }
723
sprint_command(char * buffer,int len,unsigned char * command)724 static int sprint_command(char *buffer, int len, unsigned char *command)
725 {
726 int i, s, start = len;
727 len += sprint_opcode(buffer, len, command[0]);
728 for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i)
729 PRINTP("%02x " ANDP command[i]);
730 PRINTP("\n");
731 return len - start;
732 }
733
734 /**
735 * sprintf_Scsi_Cmnd - print a scsi command
736 * @buffer: buffr to print into
737 * @len: buffer length
738 * @cmd: SCSI command block
739 *
740 * Print out the target and command data in hex
741 */
742
sprint_Scsi_Cmnd(char * buffer,int len,Scsi_Cmnd * cmd)743 static int sprint_Scsi_Cmnd(char *buffer, int len, Scsi_Cmnd * cmd)
744 {
745 int start = len;
746 PRINTP("host number %d destination target %d, lun %d\n" ANDP cmd->host->host_no ANDP cmd->target ANDP cmd->lun);
747 PRINTP(" command = ");
748 len += sprint_command(buffer, len, cmd->cmnd);
749 return len - start;
750 }
751
752 /**
753 * generic_NCR5380_proc_info - /proc for NCR5380 driver
754 * @buffer: buffer to print into
755 * @start: start position
756 * @offset: offset into buffer
757 * @len: length
758 * @hostno: instance to affect
759 * @inout: read/write
760 *
761 * Provide the procfs information for the 5380 controller. We fill
762 * this with useful debugging information including the commands
763 * being executed, disconnected command queue and the statistical
764 * data
765 *
766 * Locks: global cli/lock for queue walk
767 */
768
generic_NCR5380_proc_info(char * buffer,char ** start,off_t offset,int length,int hostno,int inout)769 int generic_NCR5380_proc_info(char *buffer, char **start, off_t offset, int length, int hostno, int inout)
770 {
771 int len = 0;
772 NCR5380_local_declare();
773 unsigned long flags;
774 unsigned char status;
775 int i;
776 struct Scsi_Host *scsi_ptr;
777 Scsi_Cmnd *ptr;
778 struct NCR5380_hostdata *hostdata;
779 #ifdef NCR5380_STATS
780 Scsi_Device *dev;
781 extern const char *const scsi_device_types[MAX_SCSI_DEVICE_CODE];
782 #endif
783 save_flags(flags);
784 cli();
785
786 for (scsi_ptr = first_instance; scsi_ptr; scsi_ptr = scsi_ptr->next)
787 if (scsi_ptr->host_no == hostno)
788 break;
789 NCR5380_setup(scsi_ptr);
790 hostdata = (struct NCR5380_hostdata *) scsi_ptr->hostdata;
791
792 PRINTP("SCSI host number %d : %s\n" ANDP scsi_ptr->host_no ANDP scsi_ptr->hostt->name);
793 PRINTP("Generic NCR5380 driver version %d\n" ANDP GENERIC_NCR5380_PUBLIC_RELEASE);
794 PRINTP("NCR5380 core version %d\n" ANDP NCR5380_PUBLIC_RELEASE);
795 #ifdef NCR53C400
796 PRINTP("NCR53C400 extension version %d\n" ANDP NCR53C400_PUBLIC_RELEASE);
797 PRINTP("NCR53C400 card%s detected\n" ANDP(((struct NCR5380_hostdata *) scsi_ptr->hostdata)->flags & FLAG_NCR53C400) ? "" : " not");
798 # if NCR53C400_PSEUDO_DMA
799 PRINTP("NCR53C400 pseudo DMA used\n");
800 # endif
801 #else
802 PRINTP("NO NCR53C400 driver extensions\n");
803 #endif
804 PRINTP("Using %s mapping at %s 0x%lx, " ANDP STRVAL(NCR5380_map_config) ANDP STRVAL(NCR5380_map_name) ANDP scsi_ptr->NCR5380_instance_name);
805 if (scsi_ptr->irq == SCSI_IRQ_NONE)
806 PRINTP("no interrupt\n");
807 else
808 PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq);
809
810 #ifdef NCR5380_STATS
811 if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue)
812 PRINTP("There are commands pending, transfer rates may be crud\n");
813 if (hostdata->pendingr)
814 PRINTP(" %d pending reads" ANDP hostdata->pendingr);
815 if (hostdata->pendingw)
816 PRINTP(" %d pending writes" ANDP hostdata->pendingw);
817 if (hostdata->pendingr || hostdata->pendingw)
818 PRINTP("\n");
819 for (dev = scsi_ptr->host_queue; dev; dev = dev->next) {
820 unsigned long br = hostdata->bytes_read[dev->id];
821 unsigned long bw = hostdata->bytes_write[dev->id];
822 long tr = hostdata->time_read[dev->id] / HZ;
823 long tw = hostdata->time_write[dev->id] / HZ;
824
825 PRINTP(" T:%d %s " ANDP dev->id ANDP(dev->type < MAX_SCSI_DEVICE_CODE) ? scsi_device_types[(int) dev->type] : "Unknown");
826 for (i = 0; i < 8; i++)
827 if (dev->vendor[i] >= 0x20)
828 *(buffer + (len++)) = dev->vendor[i];
829 *(buffer + (len++)) = ' ';
830 for (i = 0; i < 16; i++)
831 if (dev->model[i] >= 0x20)
832 *(buffer + (len++)) = dev->model[i];
833 *(buffer + (len++)) = ' ';
834 for (i = 0; i < 4; i++)
835 if (dev->rev[i] >= 0x20)
836 *(buffer + (len++)) = dev->rev[i];
837 *(buffer + (len++)) = ' ';
838
839 PRINTP("\n%10ld kb read in %5ld secs" ANDP br / 1024 ANDP tr);
840 if (tr)
841 PRINTP(" @ %5ld bps" ANDP br / tr);
842
843 PRINTP("\n%10ld kb written in %5ld secs" ANDP bw / 1024 ANDP tw);
844 if (tw)
845 PRINTP(" @ %5ld bps" ANDP bw / tw);
846 PRINTP("\n");
847 }
848 #endif
849
850 status = NCR5380_read(STATUS_REG);
851 if (!(status & SR_REQ))
852 PRINTP("REQ not asserted, phase unknown.\n");
853 else {
854 for (i = 0; (phases[i].value != PHASE_UNKNOWN) && (phases[i].value != (status & PHASE_MASK)); ++i);
855 PRINTP("Phase %s\n" ANDP phases[i].name);
856 }
857
858 if (!hostdata->connected) {
859 PRINTP("No currently connected command\n");
860 } else {
861 len += sprint_Scsi_Cmnd(buffer, len, (Scsi_Cmnd *) hostdata->connected);
862 }
863
864 PRINTP("issue_queue\n");
865
866 for (ptr = (Scsi_Cmnd *) hostdata->issue_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble)
867 len += sprint_Scsi_Cmnd(buffer, len, ptr);
868
869 PRINTP("disconnected_queue\n");
870
871 for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble)
872 len += sprint_Scsi_Cmnd(buffer, len, ptr);
873
874 *start = buffer + offset;
875 len -= offset;
876 if (len > length)
877 len = length;
878 restore_flags(flags);
879 return len;
880 }
881
882 #undef PRINTP
883 #undef ANDP
884
885 /*
886 * Eventually this will go into an include file, but this will be later
887 */
888 static Scsi_Host_Template driver_template = GENERIC_NCR5380;
889
890 #include <linux/module.h>
891 #include "scsi_module.c"
892
893 MODULE_PARM(ncr_irq, "i");
894 MODULE_PARM(ncr_dma, "i");
895 MODULE_PARM(ncr_addr, "i");
896 MODULE_PARM(ncr_5380, "i");
897 MODULE_PARM(ncr_53c400, "i");
898 MODULE_PARM(ncr_53c400a, "i");
899 MODULE_PARM(dtc_3181e, "i");
900 MODULE_LICENSE("GPL");
901
902
903 static struct isapnp_device_id id_table[] __devinitdata = {
904 {
905 ISAPNP_ANY_ID, ISAPNP_ANY_ID,
906 ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e),
907 0},
908 {0}
909 };
910
911 MODULE_DEVICE_TABLE(isapnp, id_table);
912
913
914 __setup("ncr5380=", do_NCR5380_setup);
915 __setup("ncr53c400=", do_NCR53C400_setup);
916 __setup("ncr53c400a=", do_NCR53C400A_setup);
917 __setup("dtc3181e=", do_DTC3181E_setup);
918