Commit | Line | Data |
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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 | ||
1da177e4 LT |
81 | /* settings for DTC3181E card with only Mustek scanner attached */ |
82 | #define USLEEP | |
83 | #define USLEEP_POLL 1 | |
84 | #define USLEEP_SLEEP 20 | |
85 | #define USLEEP_WAITLONG 500 | |
86 | ||
87 | #define AUTOPROBE_IRQ | |
88 | #define AUTOSENSE | |
89 | ||
1da177e4 LT |
90 | |
91 | #ifdef CONFIG_SCSI_GENERIC_NCR53C400 | |
92 | #define NCR53C400_PSEUDO_DMA 1 | |
93 | #define PSEUDO_DMA | |
94 | #define NCR53C400 | |
95 | #define NCR5380_STATS | |
96 | #undef NCR5380_STAT_LIMIT | |
97 | #endif | |
98 | ||
1da177e4 LT |
99 | #include <asm/io.h> |
100 | #include <linux/signal.h> | |
1da177e4 LT |
101 | #include <linux/blkdev.h> |
102 | #include "scsi.h" | |
103 | #include <scsi/scsi_host.h> | |
104 | #include "g_NCR5380.h" | |
105 | #include "NCR5380.h" | |
106 | #include <linux/stat.h> | |
107 | #include <linux/init.h> | |
108 | #include <linux/ioport.h> | |
109 | #include <linux/isapnp.h> | |
110 | #include <linux/delay.h> | |
111 | #include <linux/interrupt.h> | |
112 | ||
113 | #define NCR_NOT_SET 0 | |
114 | static int ncr_irq = NCR_NOT_SET; | |
115 | static int ncr_dma = NCR_NOT_SET; | |
116 | static int ncr_addr = NCR_NOT_SET; | |
117 | static int ncr_5380 = NCR_NOT_SET; | |
118 | static int ncr_53c400 = NCR_NOT_SET; | |
119 | static int ncr_53c400a = NCR_NOT_SET; | |
120 | static int dtc_3181e = NCR_NOT_SET; | |
121 | ||
122 | static struct override { | |
c818cb64 | 123 | NCR5380_map_type NCR5380_map_name; |
1da177e4 LT |
124 | int irq; |
125 | int dma; | |
126 | int board; /* Use NCR53c400, Ricoh, etc. extensions ? */ | |
127 | } overrides | |
128 | #ifdef GENERIC_NCR5380_OVERRIDE | |
129 | [] __initdata = GENERIC_NCR5380_OVERRIDE; | |
130 | #else | |
131 | [1] __initdata = { { 0,},}; | |
132 | #endif | |
133 | ||
6391a113 | 134 | #define NO_OVERRIDES ARRAY_SIZE(overrides) |
1da177e4 | 135 | |
6391a113 | 136 | #ifndef MODULE |
1da177e4 LT |
137 | |
138 | /** | |
139 | * internal_setup - handle lilo command string override | |
140 | * @board: BOARD_* identifier for the board | |
141 | * @str: unused | |
142 | * @ints: numeric parameters | |
143 | * | |
144 | * Do LILO command line initialization of the overrides array. Display | |
145 | * errors when needed | |
146 | * | |
147 | * Locks: none | |
148 | */ | |
149 | ||
150 | static void __init internal_setup(int board, char *str, int *ints) | |
151 | { | |
152 | static int commandline_current = 0; | |
153 | switch (board) { | |
154 | case BOARD_NCR5380: | |
155 | if (ints[0] != 2 && ints[0] != 3) { | |
156 | printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n"); | |
157 | return; | |
158 | } | |
159 | break; | |
160 | case BOARD_NCR53C400: | |
161 | if (ints[0] != 2) { | |
162 | printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n"); | |
163 | return; | |
164 | } | |
165 | break; | |
166 | case BOARD_NCR53C400A: | |
167 | if (ints[0] != 2) { | |
168 | printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n"); | |
169 | return; | |
170 | } | |
171 | break; | |
172 | case BOARD_DTC3181E: | |
173 | if (ints[0] != 2) { | |
174 | printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n"); | |
175 | return; | |
176 | } | |
177 | break; | |
178 | } | |
179 | ||
180 | if (commandline_current < NO_OVERRIDES) { | |
181 | overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1]; | |
182 | overrides[commandline_current].irq = ints[2]; | |
183 | if (ints[0] == 3) | |
184 | overrides[commandline_current].dma = ints[3]; | |
185 | else | |
186 | overrides[commandline_current].dma = DMA_NONE; | |
187 | overrides[commandline_current].board = board; | |
188 | ++commandline_current; | |
189 | } | |
190 | } | |
191 | ||
192 | ||
193 | /** | |
194 | * do_NCR53C80_setup - set up entry point | |
195 | * @str: unused | |
196 | * | |
197 | * Setup function invoked at boot to parse the ncr5380= command | |
198 | * line. | |
199 | */ | |
200 | ||
201 | static int __init do_NCR5380_setup(char *str) | |
202 | { | |
203 | int ints[10]; | |
204 | ||
6391a113 | 205 | get_options(str, ARRAY_SIZE(ints), ints); |
1da177e4 LT |
206 | internal_setup(BOARD_NCR5380, str, ints); |
207 | return 1; | |
208 | } | |
209 | ||
210 | /** | |
211 | * do_NCR53C400_setup - set up entry point | |
212 | * @str: unused | |
6391a113 | 213 | * @ints: integer parameters from kernel setup code |
1da177e4 LT |
214 | * |
215 | * Setup function invoked at boot to parse the ncr53c400= command | |
216 | * line. | |
217 | */ | |
218 | ||
219 | static int __init do_NCR53C400_setup(char *str) | |
220 | { | |
221 | int ints[10]; | |
222 | ||
6391a113 | 223 | get_options(str, ARRAY_SIZE(ints), ints); |
1da177e4 LT |
224 | internal_setup(BOARD_NCR53C400, str, ints); |
225 | return 1; | |
226 | } | |
227 | ||
228 | /** | |
229 | * do_NCR53C400A_setup - set up entry point | |
230 | * @str: unused | |
6391a113 | 231 | * @ints: integer parameters from kernel setup code |
1da177e4 LT |
232 | * |
233 | * Setup function invoked at boot to parse the ncr53c400a= command | |
234 | * line. | |
235 | */ | |
236 | ||
237 | static int __init do_NCR53C400A_setup(char *str) | |
238 | { | |
239 | int ints[10]; | |
240 | ||
6391a113 | 241 | get_options(str, ARRAY_SIZE(ints), ints); |
1da177e4 LT |
242 | internal_setup(BOARD_NCR53C400A, str, ints); |
243 | return 1; | |
244 | } | |
245 | ||
246 | /** | |
247 | * do_DTC3181E_setup - set up entry point | |
248 | * @str: unused | |
6391a113 | 249 | * @ints: integer parameters from kernel setup code |
1da177e4 LT |
250 | * |
251 | * Setup function invoked at boot to parse the dtc3181e= command | |
252 | * line. | |
253 | */ | |
254 | ||
255 | static int __init do_DTC3181E_setup(char *str) | |
256 | { | |
257 | int ints[10]; | |
258 | ||
6391a113 | 259 | get_options(str, ARRAY_SIZE(ints), ints); |
1da177e4 LT |
260 | internal_setup(BOARD_DTC3181E, str, ints); |
261 | return 1; | |
262 | } | |
263 | ||
264 | #endif | |
265 | ||
266 | /** | |
267 | * generic_NCR5380_detect - look for NCR5380 controllers | |
268 | * @tpnt: the scsi template | |
269 | * | |
270 | * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E | |
271 | * and DTC436(ISAPnP) controllers. If overrides have been set we use | |
272 | * them. | |
273 | * | |
274 | * The caller supplied NCR5380_init function is invoked from here, before | |
275 | * the interrupt line is taken. | |
276 | * | |
277 | * Locks: none | |
278 | */ | |
279 | ||
d0be4a7d | 280 | int __init generic_NCR5380_detect(struct scsi_host_template * tpnt) |
1da177e4 LT |
281 | { |
282 | static int current_override = 0; | |
702a98c6 | 283 | int count; |
1da177e4 | 284 | unsigned int *ports; |
702a98c6 OZ |
285 | #ifndef SCSI_G_NCR5380_MEM |
286 | int i; | |
1da177e4 | 287 | unsigned long region_size = 16; |
702a98c6 | 288 | #endif |
1da177e4 LT |
289 | static unsigned int __initdata ncr_53c400a_ports[] = { |
290 | 0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0 | |
291 | }; | |
292 | static unsigned int __initdata dtc_3181e_ports[] = { | |
293 | 0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0 | |
294 | }; | |
295 | int flags = 0; | |
296 | struct Scsi_Host *instance; | |
702a98c6 | 297 | #ifdef SCSI_G_NCR5380_MEM |
c818cb64 AV |
298 | unsigned long base; |
299 | void __iomem *iomem; | |
300 | #endif | |
1da177e4 LT |
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; | |
702a98c6 | 316 | #ifndef SCSI_G_NCR5380_MEM |
1da177e4 LT |
317 | if (!current_override && isapnp_present()) { |
318 | struct pnp_dev *dev = NULL; | |
319 | count = 0; | |
320 | while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) { | |
321 | if (count >= NO_OVERRIDES) | |
322 | break; | |
c94babba | 323 | if (pnp_device_attach(dev) < 0) |
1da177e4 | 324 | continue; |
1da177e4 LT |
325 | if (pnp_activate_dev(dev) < 0) { |
326 | printk(KERN_ERR "dtc436e probe: activate failed\n"); | |
327 | pnp_device_detach(dev); | |
328 | continue; | |
329 | } | |
330 | if (!pnp_port_valid(dev, 0)) { | |
331 | printk(KERN_ERR "dtc436e probe: no valid port\n"); | |
332 | pnp_device_detach(dev); | |
333 | continue; | |
334 | } | |
335 | if (pnp_irq_valid(dev, 0)) | |
336 | overrides[count].irq = pnp_irq(dev, 0); | |
337 | else | |
338 | overrides[count].irq = SCSI_IRQ_NONE; | |
339 | if (pnp_dma_valid(dev, 0)) | |
340 | overrides[count].dma = pnp_dma(dev, 0); | |
341 | else | |
342 | overrides[count].dma = DMA_NONE; | |
343 | overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0); | |
344 | overrides[count].board = BOARD_DTC3181E; | |
345 | count++; | |
346 | } | |
347 | } | |
702a98c6 | 348 | #endif |
1da177e4 LT |
349 | tpnt->proc_name = "g_NCR5380"; |
350 | ||
351 | for (count = 0; current_override < NO_OVERRIDES; ++current_override) { | |
352 | if (!(overrides[current_override].NCR5380_map_name)) | |
353 | continue; | |
354 | ||
355 | ports = NULL; | |
356 | switch (overrides[current_override].board) { | |
357 | case BOARD_NCR5380: | |
358 | flags = FLAG_NO_PSEUDO_DMA; | |
359 | break; | |
360 | case BOARD_NCR53C400: | |
361 | flags = FLAG_NCR53C400; | |
362 | break; | |
363 | case BOARD_NCR53C400A: | |
364 | flags = FLAG_NO_PSEUDO_DMA; | |
365 | ports = ncr_53c400a_ports; | |
366 | break; | |
367 | case BOARD_DTC3181E: | |
368 | flags = FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E; | |
369 | ports = dtc_3181e_ports; | |
370 | break; | |
371 | } | |
372 | ||
702a98c6 | 373 | #ifndef SCSI_G_NCR5380_MEM |
1da177e4 LT |
374 | if (ports) { |
375 | /* wakeup sequence for the NCR53C400A and DTC3181E */ | |
376 | ||
377 | /* Disable the adapter and look for a free io port */ | |
378 | outb(0x59, 0x779); | |
379 | outb(0xb9, 0x379); | |
380 | outb(0xc5, 0x379); | |
381 | outb(0xae, 0x379); | |
382 | outb(0xa6, 0x379); | |
383 | outb(0x00, 0x379); | |
384 | ||
385 | if (overrides[current_override].NCR5380_map_name != PORT_AUTO) | |
386 | for (i = 0; ports[i]; i++) { | |
387 | if (!request_region(ports[i], 16, "ncr53c80")) | |
388 | continue; | |
389 | if (overrides[current_override].NCR5380_map_name == ports[i]) | |
390 | break; | |
391 | release_region(ports[i], 16); | |
392 | } else | |
393 | for (i = 0; ports[i]; i++) { | |
394 | if (!request_region(ports[i], 16, "ncr53c80")) | |
395 | continue; | |
396 | if (inb(ports[i]) == 0xff) | |
397 | break; | |
398 | release_region(ports[i], 16); | |
399 | } | |
400 | if (ports[i]) { | |
401 | /* At this point we have our region reserved */ | |
402 | outb(0x59, 0x779); | |
403 | outb(0xb9, 0x379); | |
404 | outb(0xc5, 0x379); | |
405 | outb(0xae, 0x379); | |
406 | outb(0xa6, 0x379); | |
407 | outb(0x80 | i, 0x379); /* set io port to be used */ | |
408 | outb(0xc0, ports[i] + 9); | |
409 | if (inb(ports[i] + 9) != 0x80) | |
410 | continue; | |
411 | else | |
412 | overrides[current_override].NCR5380_map_name = ports[i]; | |
413 | } else | |
414 | continue; | |
415 | } | |
416 | else | |
417 | { | |
418 | /* Not a 53C400A style setup - just grab */ | |
419 | if(!(request_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380"))) | |
420 | continue; | |
421 | region_size = NCR5380_region_size; | |
422 | } | |
423 | #else | |
c818cb64 AV |
424 | base = overrides[current_override].NCR5380_map_name; |
425 | if (!request_mem_region(base, NCR5380_region_size, "ncr5380")) | |
426 | continue; | |
427 | iomem = ioremap(base, NCR5380_region_size); | |
428 | if (!iomem) { | |
429 | release_mem_region(base, NCR5380_region_size); | |
1da177e4 | 430 | continue; |
c818cb64 | 431 | } |
1da177e4 LT |
432 | #endif |
433 | instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata)); | |
434 | if (instance == NULL) { | |
702a98c6 | 435 | #ifndef SCSI_G_NCR5380_MEM |
1da177e4 LT |
436 | release_region(overrides[current_override].NCR5380_map_name, region_size); |
437 | #else | |
c818cb64 AV |
438 | iounmap(iomem); |
439 | release_mem_region(base, NCR5380_region_size); | |
1da177e4 LT |
440 | #endif |
441 | continue; | |
442 | } | |
443 | ||
444 | instance->NCR5380_instance_name = overrides[current_override].NCR5380_map_name; | |
702a98c6 | 445 | #ifndef SCSI_G_NCR5380_MEM |
1da177e4 | 446 | instance->n_io_port = region_size; |
c818cb64 | 447 | #else |
702a98c6 | 448 | ((struct NCR5380_hostdata *)instance->hostdata)->iomem = iomem; |
1da177e4 LT |
449 | #endif |
450 | ||
451 | NCR5380_init(instance, flags); | |
452 | ||
453 | if (overrides[current_override].irq != IRQ_AUTO) | |
454 | instance->irq = overrides[current_override].irq; | |
455 | else | |
456 | instance->irq = NCR5380_probe_irq(instance, 0xffff); | |
457 | ||
458 | if (instance->irq != SCSI_IRQ_NONE) | |
1e641664 | 459 | if (request_irq(instance->irq, generic_NCR5380_intr, |
4909cc2b | 460 | 0, "NCR5380", instance)) { |
1da177e4 LT |
461 | printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq); |
462 | instance->irq = SCSI_IRQ_NONE; | |
463 | } | |
464 | ||
465 | if (instance->irq == SCSI_IRQ_NONE) { | |
466 | printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no); | |
467 | printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no); | |
468 | } | |
469 | ||
470 | printk(KERN_INFO "scsi%d : at " STRVAL(NCR5380_map_name) " 0x%x", instance->host_no, (unsigned int) instance->NCR5380_instance_name); | |
471 | if (instance->irq == SCSI_IRQ_NONE) | |
472 | printk(" interrupts disabled"); | |
473 | else | |
474 | printk(" irq %d", instance->irq); | |
475 | printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", CAN_QUEUE, CMD_PER_LUN, GENERIC_NCR5380_PUBLIC_RELEASE); | |
476 | NCR5380_print_options(instance); | |
477 | printk("\n"); | |
478 | ||
479 | ++current_override; | |
480 | ++count; | |
481 | } | |
482 | return count; | |
483 | } | |
484 | ||
485 | /** | |
486 | * generic_NCR5380_info - reporting string | |
487 | * @host: NCR5380 to report on | |
488 | * | |
489 | * Report driver information for the NCR5380 | |
490 | */ | |
491 | ||
492 | const char *generic_NCR5380_info(struct Scsi_Host *host) | |
493 | { | |
494 | static const char string[] = "Generic NCR5380/53C400 Driver"; | |
495 | return string; | |
496 | } | |
497 | ||
498 | /** | |
499 | * generic_NCR5380_release_resources - free resources | |
500 | * @instance: host adapter to clean up | |
501 | * | |
502 | * Free the generic interface resources from this adapter. | |
503 | * | |
504 | * Locks: none | |
505 | */ | |
506 | ||
507 | int generic_NCR5380_release_resources(struct Scsi_Host *instance) | |
508 | { | |
509 | NCR5380_local_declare(); | |
510 | NCR5380_setup(instance); | |
511 | ||
512 | if (instance->irq != SCSI_IRQ_NONE) | |
1e641664 | 513 | free_irq(instance->irq, instance); |
1da177e4 LT |
514 | NCR5380_exit(instance); |
515 | ||
702a98c6 | 516 | #ifndef SCSI_G_NCR5380_MEM |
1da177e4 LT |
517 | release_region(instance->NCR5380_instance_name, instance->n_io_port); |
518 | #else | |
702a98c6 | 519 | iounmap(((struct NCR5380_hostdata *)instance->hostdata)->iomem); |
1da177e4 LT |
520 | release_mem_region(instance->NCR5380_instance_name, NCR5380_region_size); |
521 | #endif | |
522 | ||
523 | ||
524 | return 0; | |
525 | } | |
526 | ||
527 | #ifdef BIOSPARAM | |
528 | /** | |
529 | * generic_NCR5380_biosparam | |
530 | * @disk: disk to compute geometry for | |
531 | * @dev: device identifier for this disk | |
532 | * @ip: sizes to fill in | |
533 | * | |
534 | * Generates a BIOS / DOS compatible H-C-S mapping for the specified | |
535 | * device / size. | |
536 | * | |
537 | * XXX Most SCSI boards use this mapping, I could be incorrect. Someone | |
538 | * using hard disks on a trantor should verify that this mapping | |
539 | * corresponds to that used by the BIOS / ASPI driver by running the linux | |
540 | * fdisk program and matching the H_C_S coordinates to what DOS uses. | |
541 | * | |
542 | * Locks: none | |
543 | */ | |
544 | ||
545 | static int | |
546 | generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev, | |
547 | sector_t capacity, int *ip) | |
548 | { | |
549 | ip[0] = 64; | |
550 | ip[1] = 32; | |
551 | ip[2] = capacity >> 11; | |
552 | return 0; | |
553 | } | |
554 | #endif | |
555 | ||
8d9e0f46 | 556 | #ifdef NCR53C400_PSEUDO_DMA |
1da177e4 LT |
557 | |
558 | /** | |
559 | * NCR5380_pread - pseudo DMA read | |
560 | * @instance: adapter to read from | |
561 | * @dst: buffer to read into | |
562 | * @len: buffer length | |
563 | * | |
25985edc | 564 | * Perform a pseudo DMA mode read from an NCR53C400 or equivalent |
1da177e4 LT |
565 | * controller |
566 | */ | |
567 | ||
568 | static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len) | |
569 | { | |
570 | int blocks = len / 128; | |
571 | int start = 0; | |
572 | int bl; | |
573 | ||
574 | NCR5380_local_declare(); | |
575 | NCR5380_setup(instance); | |
576 | ||
577 | NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR); | |
578 | NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); | |
579 | while (1) { | |
580 | if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { | |
581 | break; | |
582 | } | |
583 | if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { | |
584 | printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); | |
585 | return -1; | |
586 | } | |
587 | while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY); | |
588 | ||
702a98c6 | 589 | #ifndef SCSI_G_NCR5380_MEM |
1da177e4 LT |
590 | { |
591 | int i; | |
592 | for (i = 0; i < 128; i++) | |
593 | dst[start + i] = NCR5380_read(C400_HOST_BUFFER); | |
594 | } | |
595 | #else | |
702a98c6 | 596 | /* implies SCSI_G_NCR5380_MEM */ |
c818cb64 | 597 | memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128); |
1da177e4 LT |
598 | #endif |
599 | start += 128; | |
600 | blocks--; | |
601 | } | |
602 | ||
603 | if (blocks) { | |
604 | while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) | |
605 | { | |
606 | // FIXME - no timeout | |
607 | } | |
608 | ||
702a98c6 | 609 | #ifndef SCSI_G_NCR5380_MEM |
1da177e4 LT |
610 | { |
611 | int i; | |
612 | for (i = 0; i < 128; i++) | |
613 | dst[start + i] = NCR5380_read(C400_HOST_BUFFER); | |
614 | } | |
615 | #else | |
702a98c6 | 616 | /* implies SCSI_G_NCR5380_MEM */ |
c818cb64 | 617 | memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128); |
1da177e4 LT |
618 | #endif |
619 | start += 128; | |
620 | blocks--; | |
621 | } | |
622 | ||
623 | if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) | |
624 | printk("53C400r: no 53C80 gated irq after transfer"); | |
625 | ||
626 | #if 0 | |
627 | /* | |
628 | * DON'T DO THIS - THEY NEVER ARRIVE! | |
629 | */ | |
630 | printk("53C400r: Waiting for 53C80 registers\n"); | |
631 | while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG) | |
632 | ; | |
633 | #endif | |
634 | if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) | |
635 | printk(KERN_ERR "53C400r: no end dma signal\n"); | |
636 | ||
637 | NCR5380_write(MODE_REG, MR_BASE); | |
638 | NCR5380_read(RESET_PARITY_INTERRUPT_REG); | |
639 | return 0; | |
640 | } | |
641 | ||
642 | /** | |
643 | * NCR5380_write - pseudo DMA write | |
644 | * @instance: adapter to read from | |
645 | * @dst: buffer to read into | |
646 | * @len: buffer length | |
647 | * | |
25985edc | 648 | * Perform a pseudo DMA mode read from an NCR53C400 or equivalent |
1da177e4 LT |
649 | * controller |
650 | */ | |
651 | ||
652 | static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len) | |
653 | { | |
654 | int blocks = len / 128; | |
655 | int start = 0; | |
656 | int bl; | |
657 | int i; | |
658 | ||
659 | NCR5380_local_declare(); | |
660 | NCR5380_setup(instance); | |
661 | ||
662 | NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE); | |
663 | NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); | |
664 | while (1) { | |
665 | if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { | |
666 | printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); | |
667 | return -1; | |
668 | } | |
669 | ||
670 | if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { | |
671 | break; | |
672 | } | |
673 | while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) | |
674 | ; // FIXME - timeout | |
702a98c6 | 675 | #ifndef SCSI_G_NCR5380_MEM |
1da177e4 LT |
676 | { |
677 | for (i = 0; i < 128; i++) | |
678 | NCR5380_write(C400_HOST_BUFFER, src[start + i]); | |
679 | } | |
680 | #else | |
702a98c6 | 681 | /* implies SCSI_G_NCR5380_MEM */ |
c818cb64 | 682 | memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128); |
1da177e4 LT |
683 | #endif |
684 | start += 128; | |
685 | blocks--; | |
686 | } | |
687 | if (blocks) { | |
688 | while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) | |
689 | ; // FIXME - no timeout | |
690 | ||
702a98c6 | 691 | #ifndef SCSI_G_NCR5380_MEM |
1da177e4 LT |
692 | { |
693 | for (i = 0; i < 128; i++) | |
694 | NCR5380_write(C400_HOST_BUFFER, src[start + i]); | |
695 | } | |
696 | #else | |
702a98c6 | 697 | /* implies SCSI_G_NCR5380_MEM */ |
c818cb64 | 698 | memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128); |
1da177e4 LT |
699 | #endif |
700 | start += 128; | |
701 | blocks--; | |
702 | } | |
703 | ||
704 | #if 0 | |
705 | printk("53C400w: waiting for registers to be available\n"); | |
706 | THEY NEVER DO ! while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG); | |
707 | printk("53C400w: Got em\n"); | |
708 | #endif | |
709 | ||
710 | /* Let's wait for this instead - could be ugly */ | |
711 | /* All documentation says to check for this. Maybe my hardware is too | |
712 | * fast. Waiting for it seems to work fine! KLL | |
713 | */ | |
714 | while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) | |
715 | ; // FIXME - no timeout | |
716 | ||
717 | /* | |
718 | * I know. i is certainly != 0 here but the loop is new. See previous | |
719 | * comment. | |
720 | */ | |
721 | if (i) { | |
722 | if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER)) | |
723 | printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i); | |
724 | } else | |
725 | printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n"); | |
726 | ||
727 | #if 0 | |
728 | if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) { | |
729 | printk(KERN_ERR "53C400w: no end dma signal\n"); | |
730 | } | |
731 | #endif | |
732 | while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT)) | |
733 | ; // TIMEOUT | |
734 | return 0; | |
735 | } | |
736 | #endif /* PSEUDO_DMA */ | |
737 | ||
738 | /* | |
739 | * Include the NCR5380 core code that we build our driver around | |
740 | */ | |
741 | ||
742 | #include "NCR5380.c" | |
743 | ||
dd7ab71b | 744 | #define PRINTP(x) seq_printf(m, x) |
1da177e4 LT |
745 | #define ANDP , |
746 | ||
dd7ab71b | 747 | static void sprint_opcode(struct seq_file *m, int opcode) |
1da177e4 | 748 | { |
1da177e4 | 749 | PRINTP("0x%02x " ANDP opcode); |
1da177e4 LT |
750 | } |
751 | ||
dd7ab71b | 752 | static void sprint_command(struct seq_file *m, unsigned char *command) |
1da177e4 | 753 | { |
dd7ab71b AV |
754 | int i, s; |
755 | sprint_opcode(m, command[0]); | |
1da177e4 LT |
756 | for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i) |
757 | PRINTP("%02x " ANDP command[i]); | |
758 | PRINTP("\n"); | |
1da177e4 LT |
759 | } |
760 | ||
761 | /** | |
762 | * sprintf_Scsi_Cmnd - print a scsi command | |
dd7ab71b | 763 | * @m: seq_fil to print into |
1da177e4 LT |
764 | * @cmd: SCSI command block |
765 | * | |
766 | * Print out the target and command data in hex | |
767 | */ | |
768 | ||
dd7ab71b | 769 | static void sprint_Scsi_Cmnd(struct seq_file *m, Scsi_Cmnd * cmd) |
1da177e4 | 770 | { |
9cb78c16 | 771 | PRINTP("host number %d destination target %d, lun %llu\n" ANDP cmd->device->host->host_no ANDP cmd->device->id ANDP cmd->device->lun); |
1da177e4 | 772 | PRINTP(" command = "); |
dd7ab71b | 773 | sprint_command(m, cmd->cmnd); |
1da177e4 LT |
774 | } |
775 | ||
776 | /** | |
777 | * generic_NCR5380_proc_info - /proc for NCR5380 driver | |
778 | * @buffer: buffer to print into | |
779 | * @start: start position | |
780 | * @offset: offset into buffer | |
781 | * @len: length | |
782 | * @hostno: instance to affect | |
783 | * @inout: read/write | |
784 | * | |
785 | * Provide the procfs information for the 5380 controller. We fill | |
786 | * this with useful debugging information including the commands | |
787 | * being executed, disconnected command queue and the statistical | |
788 | * data | |
789 | * | |
790 | * Locks: global cli/lock for queue walk | |
791 | */ | |
792 | ||
dd7ab71b | 793 | static int generic_NCR5380_show_info(struct seq_file *m, struct Scsi_Host *scsi_ptr) |
1da177e4 | 794 | { |
1da177e4 LT |
795 | NCR5380_local_declare(); |
796 | unsigned long flags; | |
797 | unsigned char status; | |
798 | int i; | |
799 | Scsi_Cmnd *ptr; | |
800 | struct NCR5380_hostdata *hostdata; | |
801 | #ifdef NCR5380_STATS | |
f64a181d | 802 | struct scsi_device *dev; |
1da177e4 LT |
803 | #endif |
804 | ||
805 | NCR5380_setup(scsi_ptr); | |
806 | hostdata = (struct NCR5380_hostdata *) scsi_ptr->hostdata; | |
807 | ||
808 | spin_lock_irqsave(scsi_ptr->host_lock, flags); | |
809 | PRINTP("SCSI host number %d : %s\n" ANDP scsi_ptr->host_no ANDP scsi_ptr->hostt->name); | |
810 | PRINTP("Generic NCR5380 driver version %d\n" ANDP GENERIC_NCR5380_PUBLIC_RELEASE); | |
811 | PRINTP("NCR5380 core version %d\n" ANDP NCR5380_PUBLIC_RELEASE); | |
812 | #ifdef NCR53C400 | |
813 | PRINTP("NCR53C400 extension version %d\n" ANDP NCR53C400_PUBLIC_RELEASE); | |
814 | PRINTP("NCR53C400 card%s detected\n" ANDP(((struct NCR5380_hostdata *) scsi_ptr->hostdata)->flags & FLAG_NCR53C400) ? "" : " not"); | |
815 | # if NCR53C400_PSEUDO_DMA | |
816 | PRINTP("NCR53C400 pseudo DMA used\n"); | |
817 | # endif | |
818 | #else | |
819 | PRINTP("NO NCR53C400 driver extensions\n"); | |
820 | #endif | |
821 | PRINTP("Using %s mapping at %s 0x%lx, " ANDP STRVAL(NCR5380_map_config) ANDP STRVAL(NCR5380_map_name) ANDP scsi_ptr->NCR5380_instance_name); | |
822 | if (scsi_ptr->irq == SCSI_IRQ_NONE) | |
823 | PRINTP("no interrupt\n"); | |
824 | else | |
825 | PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq); | |
826 | ||
827 | #ifdef NCR5380_STATS | |
828 | if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue) | |
829 | PRINTP("There are commands pending, transfer rates may be crud\n"); | |
830 | if (hostdata->pendingr) | |
831 | PRINTP(" %d pending reads" ANDP hostdata->pendingr); | |
832 | if (hostdata->pendingw) | |
833 | PRINTP(" %d pending writes" ANDP hostdata->pendingw); | |
834 | if (hostdata->pendingr || hostdata->pendingw) | |
835 | PRINTP("\n"); | |
836 | shost_for_each_device(dev, scsi_ptr) { | |
837 | unsigned long br = hostdata->bytes_read[dev->id]; | |
838 | unsigned long bw = hostdata->bytes_write[dev->id]; | |
839 | long tr = hostdata->time_read[dev->id] / HZ; | |
840 | long tw = hostdata->time_write[dev->id] / HZ; | |
841 | ||
4ff36718 | 842 | PRINTP(" T:%d %s " ANDP dev->id ANDP scsi_device_type(dev->type)); |
1da177e4 LT |
843 | for (i = 0; i < 8; i++) |
844 | if (dev->vendor[i] >= 0x20) | |
dd7ab71b AV |
845 | seq_putc(m, dev->vendor[i]); |
846 | seq_putc(m, ' '); | |
1da177e4 LT |
847 | for (i = 0; i < 16; i++) |
848 | if (dev->model[i] >= 0x20) | |
dd7ab71b AV |
849 | seq_putc(m, dev->model[i]); |
850 | seq_putc(m, ' '); | |
1da177e4 LT |
851 | for (i = 0; i < 4; i++) |
852 | if (dev->rev[i] >= 0x20) | |
dd7ab71b AV |
853 | seq_putc(m, dev->rev[i]); |
854 | seq_putc(m, ' '); | |
1da177e4 LT |
855 | |
856 | PRINTP("\n%10ld kb read in %5ld secs" ANDP br / 1024 ANDP tr); | |
857 | if (tr) | |
858 | PRINTP(" @ %5ld bps" ANDP br / tr); | |
859 | ||
860 | PRINTP("\n%10ld kb written in %5ld secs" ANDP bw / 1024 ANDP tw); | |
861 | if (tw) | |
862 | PRINTP(" @ %5ld bps" ANDP bw / tw); | |
863 | PRINTP("\n"); | |
864 | } | |
865 | #endif | |
866 | ||
867 | status = NCR5380_read(STATUS_REG); | |
868 | if (!(status & SR_REQ)) | |
869 | PRINTP("REQ not asserted, phase unknown.\n"); | |
870 | else { | |
871 | for (i = 0; (phases[i].value != PHASE_UNKNOWN) && (phases[i].value != (status & PHASE_MASK)); ++i); | |
872 | PRINTP("Phase %s\n" ANDP phases[i].name); | |
873 | } | |
874 | ||
875 | if (!hostdata->connected) { | |
876 | PRINTP("No currently connected command\n"); | |
877 | } else { | |
dd7ab71b | 878 | sprint_Scsi_Cmnd(m, (Scsi_Cmnd *) hostdata->connected); |
1da177e4 LT |
879 | } |
880 | ||
881 | PRINTP("issue_queue\n"); | |
882 | ||
883 | for (ptr = (Scsi_Cmnd *) hostdata->issue_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) | |
dd7ab71b | 884 | sprint_Scsi_Cmnd(m, ptr); |
1da177e4 LT |
885 | |
886 | PRINTP("disconnected_queue\n"); | |
887 | ||
888 | for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) | |
dd7ab71b | 889 | sprint_Scsi_Cmnd(m, ptr); |
1da177e4 | 890 | |
1da177e4 | 891 | spin_unlock_irqrestore(scsi_ptr->host_lock, flags); |
dd7ab71b | 892 | return 0; |
1da177e4 LT |
893 | } |
894 | ||
895 | #undef PRINTP | |
896 | #undef ANDP | |
897 | ||
d0be4a7d | 898 | static struct scsi_host_template driver_template = { |
dd7ab71b | 899 | .show_info = generic_NCR5380_show_info, |
1da177e4 LT |
900 | .name = "Generic NCR5380/NCR53C400 Scsi Driver", |
901 | .detect = generic_NCR5380_detect, | |
902 | .release = generic_NCR5380_release_resources, | |
903 | .info = generic_NCR5380_info, | |
904 | .queuecommand = generic_NCR5380_queue_command, | |
905 | .eh_abort_handler = generic_NCR5380_abort, | |
906 | .eh_bus_reset_handler = generic_NCR5380_bus_reset, | |
1da177e4 LT |
907 | .bios_param = NCR5380_BIOSPARAM, |
908 | .can_queue = CAN_QUEUE, | |
909 | .this_id = 7, | |
910 | .sg_tablesize = SG_ALL, | |
911 | .cmd_per_lun = CMD_PER_LUN, | |
912 | .use_clustering = DISABLE_CLUSTERING, | |
913 | }; | |
914 | #include <linux/module.h> | |
915 | #include "scsi_module.c" | |
916 | ||
917 | module_param(ncr_irq, int, 0); | |
918 | module_param(ncr_dma, int, 0); | |
919 | module_param(ncr_addr, int, 0); | |
920 | module_param(ncr_5380, int, 0); | |
921 | module_param(ncr_53c400, int, 0); | |
922 | module_param(ncr_53c400a, int, 0); | |
923 | module_param(dtc_3181e, int, 0); | |
924 | MODULE_LICENSE("GPL"); | |
925 | ||
702a98c6 | 926 | #ifndef SCSI_G_NCR5380_MEM |
6f039790 | 927 | static struct isapnp_device_id id_table[] = { |
1da177e4 LT |
928 | { |
929 | ISAPNP_ANY_ID, ISAPNP_ANY_ID, | |
930 | ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), | |
931 | 0}, | |
932 | {0} | |
933 | }; | |
934 | ||
935 | MODULE_DEVICE_TABLE(isapnp, id_table); | |
702a98c6 | 936 | #endif |
1da177e4 LT |
937 | |
938 | __setup("ncr5380=", do_NCR5380_setup); | |
939 | __setup("ncr53c400=", do_NCR53C400_setup); | |
940 | __setup("ncr53c400a=", do_NCR53C400A_setup); | |
941 | __setup("dtc3181e=", do_DTC3181E_setup); |