Commit | Line | Data |
---|---|---|
138c014d | 1 | /* |
1da177e4 | 2 | * File...........: linux/drivers/s390/block/dasd_3990_erp.c |
138c014d | 3 | * Author(s)......: Horst Hummel <Horst.Hummel@de.ibm.com> |
1da177e4 LT |
4 | * Holger Smolinski <Holger.Smolinski@de.ibm.com> |
5 | * Bugreports.to..: <Linux390@de.ibm.com> | |
6 | * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 2000, 2001 | |
7 | * | |
1da177e4 LT |
8 | */ |
9 | ||
10 | #include <linux/timer.h> | |
11 | #include <linux/slab.h> | |
12 | #include <asm/idals.h> | |
13 | #include <asm/todclk.h> | |
14 | ||
15 | #define PRINTK_HEADER "dasd_erp(3990): " | |
16 | ||
17 | #include "dasd_int.h" | |
18 | #include "dasd_eckd.h" | |
19 | ||
20 | ||
21 | struct DCTL_data { | |
22 | unsigned char subcommand; /* e.g Inhibit Write, Enable Write,... */ | |
23 | unsigned char modifier; /* Subcommand modifier */ | |
24 | unsigned short res; /* reserved */ | |
25 | } __attribute__ ((packed)); | |
26 | ||
1da177e4 | 27 | /* |
138c014d | 28 | ***************************************************************************** |
1da177e4 | 29 | * SECTION ERP HANDLING |
138c014d | 30 | ***************************************************************************** |
1da177e4 LT |
31 | */ |
32 | /* | |
138c014d | 33 | ***************************************************************************** |
1da177e4 | 34 | * 24 and 32 byte sense ERP functions |
138c014d | 35 | ***************************************************************************** |
1da177e4 LT |
36 | */ |
37 | ||
38 | /* | |
138c014d | 39 | * DASD_3990_ERP_CLEANUP |
1da177e4 LT |
40 | * |
41 | * DESCRIPTION | |
42 | * Removes the already build but not necessary ERP request and sets | |
43 | * the status of the original cqr / erp to the given (final) status | |
44 | * | |
45 | * PARAMETER | |
46 | * erp request to be blocked | |
138c014d | 47 | * final_status either DASD_CQR_DONE or DASD_CQR_FAILED |
1da177e4 LT |
48 | * |
49 | * RETURN VALUES | |
138c014d | 50 | * cqr original cqr |
1da177e4 LT |
51 | */ |
52 | static struct dasd_ccw_req * | |
53 | dasd_3990_erp_cleanup(struct dasd_ccw_req * erp, char final_status) | |
54 | { | |
55 | struct dasd_ccw_req *cqr = erp->refers; | |
56 | ||
8e09f215 | 57 | dasd_free_erp_request(erp, erp->memdev); |
1da177e4 LT |
58 | cqr->status = final_status; |
59 | return cqr; | |
60 | ||
61 | } /* end dasd_3990_erp_cleanup */ | |
62 | ||
63 | /* | |
138c014d | 64 | * DASD_3990_ERP_BLOCK_QUEUE |
1da177e4 LT |
65 | * |
66 | * DESCRIPTION | |
67 | * Block the given device request queue to prevent from further | |
68 | * processing until the started timer has expired or an related | |
69 | * interrupt was received. | |
70 | */ | |
71 | static void | |
72 | dasd_3990_erp_block_queue(struct dasd_ccw_req * erp, int expires) | |
73 | { | |
74 | ||
8e09f215 SW |
75 | struct dasd_device *device = erp->startdev; |
76 | unsigned long flags; | |
1da177e4 LT |
77 | |
78 | DEV_MESSAGE(KERN_INFO, device, | |
79 | "blocking request queue for %is", expires/HZ); | |
80 | ||
8e09f215 | 81 | spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); |
1da177e4 | 82 | device->stopped |= DASD_STOPPED_PENDING; |
8e09f215 SW |
83 | spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); |
84 | erp->status = DASD_CQR_FILLED; | |
85 | dasd_block_set_timer(device->block, expires); | |
1da177e4 LT |
86 | } |
87 | ||
88 | /* | |
138c014d | 89 | * DASD_3990_ERP_INT_REQ |
1da177e4 LT |
90 | * |
91 | * DESCRIPTION | |
92 | * Handles 'Intervention Required' error. | |
93 | * This means either device offline or not installed. | |
94 | * | |
95 | * PARAMETER | |
96 | * erp current erp | |
97 | * RETURN VALUES | |
98 | * erp modified erp | |
99 | */ | |
100 | static struct dasd_ccw_req * | |
101 | dasd_3990_erp_int_req(struct dasd_ccw_req * erp) | |
102 | { | |
103 | ||
8e09f215 | 104 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
105 | |
106 | /* first time set initial retry counter and erp_function */ | |
107 | /* and retry once without blocking queue */ | |
108 | /* (this enables easier enqueing of the cqr) */ | |
109 | if (erp->function != dasd_3990_erp_int_req) { | |
110 | ||
111 | erp->retries = 256; | |
112 | erp->function = dasd_3990_erp_int_req; | |
113 | ||
114 | } else { | |
115 | ||
116 | /* issue a message and wait for 'device ready' interrupt */ | |
117 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
118 | "is offline or not installed - " | |
119 | "INTERVENTION REQUIRED!!"); | |
120 | ||
121 | dasd_3990_erp_block_queue(erp, 60*HZ); | |
122 | } | |
123 | ||
124 | return erp; | |
125 | ||
126 | } /* end dasd_3990_erp_int_req */ | |
127 | ||
128 | /* | |
138c014d | 129 | * DASD_3990_ERP_ALTERNATE_PATH |
1da177e4 LT |
130 | * |
131 | * DESCRIPTION | |
132 | * Repeat the operation on a different channel path. | |
133 | * If all alternate paths have been tried, the request is posted with a | |
134 | * permanent error. | |
135 | * | |
136 | * PARAMETER | |
137 | * erp pointer to the current ERP | |
138 | * | |
139 | * RETURN VALUES | |
140 | * erp modified pointer to the ERP | |
141 | */ | |
142 | static void | |
143 | dasd_3990_erp_alternate_path(struct dasd_ccw_req * erp) | |
144 | { | |
8e09f215 | 145 | struct dasd_device *device = erp->startdev; |
1da177e4 | 146 | __u8 opm; |
8e09f215 | 147 | unsigned long flags; |
1da177e4 LT |
148 | |
149 | /* try alternate valid path */ | |
8e09f215 | 150 | spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); |
1da177e4 | 151 | opm = ccw_device_get_path_mask(device->cdev); |
8e09f215 | 152 | spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); |
1da177e4 LT |
153 | //FIXME: start with get_opm ? |
154 | if (erp->lpm == 0) | |
155 | erp->lpm = LPM_ANYPATH & ~(erp->irb.esw.esw0.sublog.lpum); | |
156 | else | |
157 | erp->lpm &= ~(erp->irb.esw.esw0.sublog.lpum); | |
158 | ||
159 | if ((erp->lpm & opm) != 0x00) { | |
160 | ||
161 | DEV_MESSAGE(KERN_DEBUG, device, | |
162 | "try alternate lpm=%x (lpum=%x / opm=%x)", | |
163 | erp->lpm, erp->irb.esw.esw0.sublog.lpum, opm); | |
164 | ||
8e09f215 SW |
165 | /* reset status to submit the request again... */ |
166 | erp->status = DASD_CQR_FILLED; | |
1da177e4 LT |
167 | erp->retries = 1; |
168 | } else { | |
169 | DEV_MESSAGE(KERN_ERR, device, | |
170 | "No alternate channel path left (lpum=%x / " | |
171 | "opm=%x) -> permanent error", | |
172 | erp->irb.esw.esw0.sublog.lpum, opm); | |
173 | ||
174 | /* post request with permanent error */ | |
8e09f215 | 175 | erp->status = DASD_CQR_FAILED; |
1da177e4 LT |
176 | } |
177 | } /* end dasd_3990_erp_alternate_path */ | |
178 | ||
179 | /* | |
180 | * DASD_3990_ERP_DCTL | |
181 | * | |
182 | * DESCRIPTION | |
138c014d | 183 | * Setup cqr to do the Diagnostic Control (DCTL) command with an |
1da177e4 LT |
184 | * Inhibit Write subcommand (0x20) and the given modifier. |
185 | * | |
186 | * PARAMETER | |
187 | * erp pointer to the current (failed) ERP | |
188 | * modifier subcommand modifier | |
138c014d | 189 | * |
1da177e4 | 190 | * RETURN VALUES |
138c014d | 191 | * dctl_cqr pointer to NEW dctl_cqr |
1da177e4 LT |
192 | * |
193 | */ | |
194 | static struct dasd_ccw_req * | |
195 | dasd_3990_erp_DCTL(struct dasd_ccw_req * erp, char modifier) | |
196 | { | |
197 | ||
8e09f215 | 198 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
199 | struct DCTL_data *DCTL_data; |
200 | struct ccw1 *ccw; | |
201 | struct dasd_ccw_req *dctl_cqr; | |
202 | ||
203 | dctl_cqr = dasd_alloc_erp_request((char *) &erp->magic, 1, | |
8e09f215 SW |
204 | sizeof(struct DCTL_data), |
205 | device); | |
1da177e4 LT |
206 | if (IS_ERR(dctl_cqr)) { |
207 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
208 | "Unable to allocate DCTL-CQR"); | |
209 | erp->status = DASD_CQR_FAILED; | |
210 | return erp; | |
211 | } | |
212 | ||
213 | DCTL_data = dctl_cqr->data; | |
214 | ||
215 | DCTL_data->subcommand = 0x02; /* Inhibit Write */ | |
216 | DCTL_data->modifier = modifier; | |
217 | ||
218 | ccw = dctl_cqr->cpaddr; | |
8e09f215 | 219 | memset(ccw, 0, sizeof(struct ccw1)); |
1da177e4 LT |
220 | ccw->cmd_code = CCW_CMD_DCTL; |
221 | ccw->count = 4; | |
222 | ccw->cda = (__u32)(addr_t) DCTL_data; | |
223 | dctl_cqr->function = dasd_3990_erp_DCTL; | |
224 | dctl_cqr->refers = erp; | |
8e09f215 SW |
225 | dctl_cqr->startdev = device; |
226 | dctl_cqr->memdev = device; | |
1da177e4 LT |
227 | dctl_cqr->magic = erp->magic; |
228 | dctl_cqr->expires = 5 * 60 * HZ; | |
229 | dctl_cqr->retries = 2; | |
230 | ||
231 | dctl_cqr->buildclk = get_clock(); | |
232 | ||
233 | dctl_cqr->status = DASD_CQR_FILLED; | |
234 | ||
235 | return dctl_cqr; | |
236 | ||
237 | } /* end dasd_3990_erp_DCTL */ | |
238 | ||
239 | /* | |
138c014d | 240 | * DASD_3990_ERP_ACTION_1 |
1da177e4 LT |
241 | * |
242 | * DESCRIPTION | |
243 | * Setup ERP to do the ERP action 1 (see Reference manual). | |
244 | * Repeat the operation on a different channel path. | |
245 | * If all alternate paths have been tried, the request is posted with a | |
246 | * permanent error. | |
247 | * Note: duplex handling is not implemented (yet). | |
248 | * | |
249 | * PARAMETER | |
250 | * erp pointer to the current ERP | |
251 | * | |
252 | * RETURN VALUES | |
253 | * erp pointer to the ERP | |
254 | * | |
255 | */ | |
256 | static struct dasd_ccw_req * | |
257 | dasd_3990_erp_action_1(struct dasd_ccw_req * erp) | |
258 | { | |
259 | ||
260 | erp->function = dasd_3990_erp_action_1; | |
261 | ||
262 | dasd_3990_erp_alternate_path(erp); | |
263 | ||
264 | return erp; | |
265 | ||
266 | } /* end dasd_3990_erp_action_1 */ | |
267 | ||
268 | /* | |
138c014d | 269 | * DASD_3990_ERP_ACTION_4 |
1da177e4 LT |
270 | * |
271 | * DESCRIPTION | |
272 | * Setup ERP to do the ERP action 4 (see Reference manual). | |
273 | * Set the current request to PENDING to block the CQR queue for that device | |
274 | * until the state change interrupt appears. | |
275 | * Use a timer (20 seconds) to retry the cqr if the interrupt is still | |
276 | * missing. | |
277 | * | |
278 | * PARAMETER | |
279 | * sense sense data of the actual error | |
280 | * erp pointer to the current ERP | |
281 | * | |
282 | * RETURN VALUES | |
283 | * erp pointer to the ERP | |
284 | * | |
285 | */ | |
286 | static struct dasd_ccw_req * | |
287 | dasd_3990_erp_action_4(struct dasd_ccw_req * erp, char *sense) | |
288 | { | |
289 | ||
8e09f215 | 290 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
291 | |
292 | /* first time set initial retry counter and erp_function */ | |
293 | /* and retry once without waiting for state change pending */ | |
294 | /* interrupt (this enables easier enqueing of the cqr) */ | |
295 | if (erp->function != dasd_3990_erp_action_4) { | |
296 | ||
297 | DEV_MESSAGE(KERN_INFO, device, "%s", | |
298 | "dasd_3990_erp_action_4: first time retry"); | |
299 | ||
300 | erp->retries = 256; | |
301 | erp->function = dasd_3990_erp_action_4; | |
302 | ||
303 | } else { | |
304 | ||
305 | if (sense[25] == 0x1D) { /* state change pending */ | |
306 | ||
138c014d | 307 | DEV_MESSAGE(KERN_INFO, device, |
1da177e4 LT |
308 | "waiting for state change pending " |
309 | "interrupt, %d retries left", | |
310 | erp->retries); | |
138c014d | 311 | |
1da177e4 LT |
312 | dasd_3990_erp_block_queue(erp, 30*HZ); |
313 | ||
314 | } else if (sense[25] == 0x1E) { /* busy */ | |
315 | DEV_MESSAGE(KERN_INFO, device, | |
316 | "busy - redriving request later, " | |
317 | "%d retries left", | |
318 | erp->retries); | |
319 | dasd_3990_erp_block_queue(erp, HZ); | |
320 | } else { | |
321 | ||
322 | /* no state change pending - retry */ | |
138c014d | 323 | DEV_MESSAGE (KERN_INFO, device, |
1da177e4 | 324 | "redriving request immediately, " |
138c014d | 325 | "%d retries left", |
1da177e4 | 326 | erp->retries); |
8e09f215 | 327 | erp->status = DASD_CQR_FILLED; |
1da177e4 LT |
328 | } |
329 | } | |
330 | ||
331 | return erp; | |
332 | ||
333 | } /* end dasd_3990_erp_action_4 */ | |
334 | ||
335 | /* | |
138c014d | 336 | ***************************************************************************** |
1da177e4 | 337 | * 24 byte sense ERP functions (only) |
138c014d | 338 | ***************************************************************************** |
1da177e4 LT |
339 | */ |
340 | ||
341 | /* | |
138c014d | 342 | * DASD_3990_ERP_ACTION_5 |
1da177e4 LT |
343 | * |
344 | * DESCRIPTION | |
345 | * Setup ERP to do the ERP action 5 (see Reference manual). | |
346 | * NOTE: Further handling is done in xxx_further_erp after the retries. | |
347 | * | |
348 | * PARAMETER | |
349 | * erp pointer to the current ERP | |
350 | * | |
351 | * RETURN VALUES | |
352 | * erp pointer to the ERP | |
353 | * | |
354 | */ | |
355 | static struct dasd_ccw_req * | |
356 | dasd_3990_erp_action_5(struct dasd_ccw_req * erp) | |
357 | { | |
358 | ||
359 | /* first of all retry */ | |
360 | erp->retries = 10; | |
361 | erp->function = dasd_3990_erp_action_5; | |
362 | ||
363 | return erp; | |
364 | ||
365 | } /* end dasd_3990_erp_action_5 */ | |
366 | ||
367 | /* | |
368 | * DASD_3990_HANDLE_ENV_DATA | |
369 | * | |
370 | * DESCRIPTION | |
371 | * Handles 24 byte 'Environmental data present'. | |
372 | * Does a analysis of the sense data (message Format) | |
373 | * and prints the error messages. | |
374 | * | |
375 | * PARAMETER | |
376 | * sense current sense data | |
138c014d | 377 | * |
1da177e4 LT |
378 | * RETURN VALUES |
379 | * void | |
380 | */ | |
381 | static void | |
382 | dasd_3990_handle_env_data(struct dasd_ccw_req * erp, char *sense) | |
383 | { | |
384 | ||
8e09f215 | 385 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
386 | char msg_format = (sense[7] & 0xF0); |
387 | char msg_no = (sense[7] & 0x0F); | |
388 | ||
389 | switch (msg_format) { | |
390 | case 0x00: /* Format 0 - Program or System Checks */ | |
391 | ||
392 | if (sense[1] & 0x10) { /* check message to operator bit */ | |
393 | ||
394 | switch (msg_no) { | |
395 | case 0x00: /* No Message */ | |
396 | break; | |
397 | case 0x01: | |
398 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
399 | "FORMAT 0 - Invalid Command"); | |
400 | break; | |
401 | case 0x02: | |
402 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
403 | "FORMAT 0 - Invalid Command " | |
404 | "Sequence"); | |
405 | break; | |
406 | case 0x03: | |
407 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
408 | "FORMAT 0 - CCW Count less than " | |
409 | "required"); | |
410 | break; | |
411 | case 0x04: | |
412 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
413 | "FORMAT 0 - Invalid Parameter"); | |
414 | break; | |
415 | case 0x05: | |
416 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
417 | "FORMAT 0 - Diagnostic of Sepecial" | |
418 | " Command Violates File Mask"); | |
419 | break; | |
420 | case 0x07: | |
421 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
422 | "FORMAT 0 - Channel Returned with " | |
423 | "Incorrect retry CCW"); | |
424 | break; | |
425 | case 0x08: | |
426 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
427 | "FORMAT 0 - Reset Notification"); | |
428 | break; | |
429 | case 0x09: | |
430 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
431 | "FORMAT 0 - Storage Path Restart"); | |
432 | break; | |
433 | case 0x0A: | |
434 | DEV_MESSAGE(KERN_WARNING, device, | |
435 | "FORMAT 0 - Channel requested " | |
436 | "... %02x", sense[8]); | |
437 | break; | |
438 | case 0x0B: | |
439 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
440 | "FORMAT 0 - Invalid Defective/" | |
441 | "Alternate Track Pointer"); | |
442 | break; | |
443 | case 0x0C: | |
444 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
445 | "FORMAT 0 - DPS Installation " | |
446 | "Check"); | |
447 | break; | |
448 | case 0x0E: | |
449 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
450 | "FORMAT 0 - Command Invalid on " | |
451 | "Secondary Address"); | |
452 | break; | |
453 | case 0x0F: | |
454 | DEV_MESSAGE(KERN_WARNING, device, | |
455 | "FORMAT 0 - Status Not As " | |
456 | "Required: reason %02x", sense[8]); | |
457 | break; | |
458 | default: | |
459 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
460 | "FORMAT 0 - Reseved"); | |
461 | } | |
462 | } else { | |
463 | switch (msg_no) { | |
464 | case 0x00: /* No Message */ | |
465 | break; | |
466 | case 0x01: | |
467 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
468 | "FORMAT 0 - Device Error Source"); | |
469 | break; | |
470 | case 0x02: | |
471 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
472 | "FORMAT 0 - Reserved"); | |
473 | break; | |
474 | case 0x03: | |
475 | DEV_MESSAGE(KERN_WARNING, device, | |
476 | "FORMAT 0 - Device Fenced - " | |
477 | "device = %02x", sense[4]); | |
478 | break; | |
479 | case 0x04: | |
480 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
481 | "FORMAT 0 - Data Pinned for " | |
482 | "Device"); | |
483 | break; | |
484 | default: | |
485 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
486 | "FORMAT 0 - Reserved"); | |
487 | } | |
488 | } | |
489 | break; | |
490 | ||
491 | case 0x10: /* Format 1 - Device Equipment Checks */ | |
492 | switch (msg_no) { | |
493 | case 0x00: /* No Message */ | |
494 | break; | |
495 | case 0x01: | |
496 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
497 | "FORMAT 1 - Device Status 1 not as " | |
498 | "expected"); | |
499 | break; | |
500 | case 0x03: | |
501 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
502 | "FORMAT 1 - Index missing"); | |
503 | break; | |
504 | case 0x04: | |
505 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
506 | "FORMAT 1 - Interruption cannot be reset"); | |
507 | break; | |
508 | case 0x05: | |
509 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
510 | "FORMAT 1 - Device did not respond to " | |
511 | "selection"); | |
512 | break; | |
513 | case 0x06: | |
514 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
515 | "FORMAT 1 - Device check-2 error or Set " | |
516 | "Sector is not complete"); | |
517 | break; | |
518 | case 0x07: | |
519 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
520 | "FORMAT 1 - Head address does not " | |
521 | "compare"); | |
522 | break; | |
523 | case 0x08: | |
524 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
525 | "FORMAT 1 - Device status 1 not valid"); | |
526 | break; | |
527 | case 0x09: | |
528 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
529 | "FORMAT 1 - Device not ready"); | |
530 | break; | |
531 | case 0x0A: | |
532 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
533 | "FORMAT 1 - Track physical address did " | |
534 | "not compare"); | |
535 | break; | |
536 | case 0x0B: | |
537 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
538 | "FORMAT 1 - Missing device address bit"); | |
539 | break; | |
540 | case 0x0C: | |
541 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
542 | "FORMAT 1 - Drive motor switch is off"); | |
543 | break; | |
544 | case 0x0D: | |
545 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
546 | "FORMAT 1 - Seek incomplete"); | |
547 | break; | |
548 | case 0x0E: | |
549 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
550 | "FORMAT 1 - Cylinder address did not " | |
551 | "compare"); | |
552 | break; | |
553 | case 0x0F: | |
554 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
555 | "FORMAT 1 - Offset active cannot be " | |
556 | "reset"); | |
557 | break; | |
558 | default: | |
559 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
560 | "FORMAT 1 - Reserved"); | |
561 | } | |
562 | break; | |
563 | ||
564 | case 0x20: /* Format 2 - 3990 Equipment Checks */ | |
565 | switch (msg_no) { | |
566 | case 0x08: | |
567 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
568 | "FORMAT 2 - 3990 check-2 error"); | |
569 | break; | |
570 | case 0x0E: | |
571 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
572 | "FORMAT 2 - Support facility errors"); | |
573 | break; | |
574 | case 0x0F: | |
575 | DEV_MESSAGE(KERN_WARNING, device, | |
576 | "FORMAT 2 - Microcode detected error %02x", | |
577 | sense[8]); | |
578 | break; | |
579 | default: | |
580 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
581 | "FORMAT 2 - Reserved"); | |
582 | } | |
583 | break; | |
584 | ||
585 | case 0x30: /* Format 3 - 3990 Control Checks */ | |
586 | switch (msg_no) { | |
587 | case 0x0F: | |
588 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
589 | "FORMAT 3 - Allegiance terminated"); | |
590 | break; | |
591 | default: | |
592 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
593 | "FORMAT 3 - Reserved"); | |
594 | } | |
595 | break; | |
596 | ||
597 | case 0x40: /* Format 4 - Data Checks */ | |
598 | switch (msg_no) { | |
599 | case 0x00: | |
600 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
601 | "FORMAT 4 - Home address area error"); | |
602 | break; | |
603 | case 0x01: | |
604 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
605 | "FORMAT 4 - Count area error"); | |
606 | break; | |
607 | case 0x02: | |
608 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
609 | "FORMAT 4 - Key area error"); | |
610 | break; | |
611 | case 0x03: | |
612 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
613 | "FORMAT 4 - Data area error"); | |
614 | break; | |
615 | case 0x04: | |
616 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
617 | "FORMAT 4 - No sync byte in home address " | |
618 | "area"); | |
619 | break; | |
620 | case 0x05: | |
621 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
622 | "FORMAT 4 - No sync byte in count address " | |
623 | "area"); | |
624 | break; | |
625 | case 0x06: | |
626 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
627 | "FORMAT 4 - No sync byte in key area"); | |
628 | break; | |
629 | case 0x07: | |
630 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
631 | "FORMAT 4 - No sync byte in data area"); | |
632 | break; | |
633 | case 0x08: | |
634 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
635 | "FORMAT 4 - Home address area error; " | |
636 | "offset active"); | |
637 | break; | |
638 | case 0x09: | |
639 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
640 | "FORMAT 4 - Count area error; offset " | |
641 | "active"); | |
642 | break; | |
643 | case 0x0A: | |
644 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
645 | "FORMAT 4 - Key area error; offset " | |
646 | "active"); | |
647 | break; | |
648 | case 0x0B: | |
649 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
650 | "FORMAT 4 - Data area error; " | |
651 | "offset active"); | |
652 | break; | |
653 | case 0x0C: | |
654 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
655 | "FORMAT 4 - No sync byte in home " | |
656 | "address area; offset active"); | |
657 | break; | |
658 | case 0x0D: | |
659 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
660 | "FORMAT 4 - No syn byte in count " | |
661 | "address area; offset active"); | |
662 | break; | |
663 | case 0x0E: | |
664 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
665 | "FORMAT 4 - No sync byte in key area; " | |
666 | "offset active"); | |
667 | break; | |
668 | case 0x0F: | |
669 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
670 | "FORMAT 4 - No syn byte in data area; " | |
671 | "offset active"); | |
672 | break; | |
673 | default: | |
674 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
675 | "FORMAT 4 - Reserved"); | |
676 | } | |
677 | break; | |
678 | ||
679 | case 0x50: /* Format 5 - Data Check with displacement information */ | |
680 | switch (msg_no) { | |
681 | case 0x00: | |
682 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
683 | "FORMAT 5 - Data Check in the " | |
684 | "home address area"); | |
685 | break; | |
686 | case 0x01: | |
687 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
688 | "FORMAT 5 - Data Check in the count area"); | |
689 | break; | |
690 | case 0x02: | |
691 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
692 | "FORMAT 5 - Data Check in the key area"); | |
693 | break; | |
694 | case 0x03: | |
695 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
696 | "FORMAT 5 - Data Check in the data area"); | |
697 | break; | |
698 | case 0x08: | |
699 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
700 | "FORMAT 5 - Data Check in the " | |
701 | "home address area; offset active"); | |
702 | break; | |
703 | case 0x09: | |
704 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
705 | "FORMAT 5 - Data Check in the count area; " | |
706 | "offset active"); | |
707 | break; | |
708 | case 0x0A: | |
709 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
710 | "FORMAT 5 - Data Check in the key area; " | |
711 | "offset active"); | |
712 | break; | |
713 | case 0x0B: | |
714 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
715 | "FORMAT 5 - Data Check in the data area; " | |
716 | "offset active"); | |
717 | break; | |
718 | default: | |
719 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
720 | "FORMAT 5 - Reserved"); | |
721 | } | |
722 | break; | |
723 | ||
724 | case 0x60: /* Format 6 - Usage Statistics/Overrun Errors */ | |
725 | switch (msg_no) { | |
726 | case 0x00: | |
727 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
728 | "FORMAT 6 - Overrun on channel A"); | |
729 | break; | |
730 | case 0x01: | |
731 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
732 | "FORMAT 6 - Overrun on channel B"); | |
733 | break; | |
734 | case 0x02: | |
735 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
736 | "FORMAT 6 - Overrun on channel C"); | |
737 | break; | |
738 | case 0x03: | |
739 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
740 | "FORMAT 6 - Overrun on channel D"); | |
741 | break; | |
742 | case 0x04: | |
743 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
744 | "FORMAT 6 - Overrun on channel E"); | |
745 | break; | |
746 | case 0x05: | |
747 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
748 | "FORMAT 6 - Overrun on channel F"); | |
749 | break; | |
750 | case 0x06: | |
751 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
752 | "FORMAT 6 - Overrun on channel G"); | |
753 | break; | |
754 | case 0x07: | |
755 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
756 | "FORMAT 6 - Overrun on channel H"); | |
757 | break; | |
758 | default: | |
759 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
760 | "FORMAT 6 - Reserved"); | |
761 | } | |
762 | break; | |
763 | ||
764 | case 0x70: /* Format 7 - Device Connection Control Checks */ | |
765 | switch (msg_no) { | |
766 | case 0x00: | |
767 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
768 | "FORMAT 7 - RCC initiated by a connection " | |
769 | "check alert"); | |
770 | break; | |
771 | case 0x01: | |
772 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
773 | "FORMAT 7 - RCC 1 sequence not " | |
774 | "successful"); | |
775 | break; | |
776 | case 0x02: | |
777 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
778 | "FORMAT 7 - RCC 1 and RCC 2 sequences not " | |
779 | "successful"); | |
780 | break; | |
781 | case 0x03: | |
782 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
783 | "FORMAT 7 - Invalid tag-in during " | |
784 | "selection sequence"); | |
785 | break; | |
786 | case 0x04: | |
787 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
788 | "FORMAT 7 - extra RCC required"); | |
789 | break; | |
790 | case 0x05: | |
791 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
792 | "FORMAT 7 - Invalid DCC selection " | |
793 | "response or timeout"); | |
794 | break; | |
795 | case 0x06: | |
796 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
797 | "FORMAT 7 - Missing end operation; device " | |
798 | "transfer complete"); | |
799 | break; | |
800 | case 0x07: | |
801 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
802 | "FORMAT 7 - Missing end operation; device " | |
803 | "transfer incomplete"); | |
804 | break; | |
805 | case 0x08: | |
806 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
807 | "FORMAT 7 - Invalid tag-in for an " | |
808 | "immediate command sequence"); | |
809 | break; | |
810 | case 0x09: | |
811 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
812 | "FORMAT 7 - Invalid tag-in for an " | |
813 | "extended command sequence"); | |
814 | break; | |
815 | case 0x0A: | |
816 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
817 | "FORMAT 7 - 3990 microcode time out when " | |
818 | "stopping selection"); | |
819 | break; | |
820 | case 0x0B: | |
821 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
822 | "FORMAT 7 - No response to selection " | |
823 | "after a poll interruption"); | |
824 | break; | |
825 | case 0x0C: | |
826 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
827 | "FORMAT 7 - Permanent path error (DASD " | |
828 | "controller not available)"); | |
829 | break; | |
830 | case 0x0D: | |
831 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
832 | "FORMAT 7 - DASD controller not available" | |
833 | " on disconnected command chain"); | |
834 | break; | |
835 | default: | |
836 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
837 | "FORMAT 7 - Reserved"); | |
838 | } | |
839 | break; | |
840 | ||
841 | case 0x80: /* Format 8 - Additional Device Equipment Checks */ | |
842 | switch (msg_no) { | |
843 | case 0x00: /* No Message */ | |
844 | case 0x01: | |
845 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
846 | "FORMAT 8 - Error correction code " | |
847 | "hardware fault"); | |
848 | break; | |
849 | case 0x03: | |
850 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
851 | "FORMAT 8 - Unexpected end operation " | |
852 | "response code"); | |
853 | break; | |
854 | case 0x04: | |
855 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
856 | "FORMAT 8 - End operation with transfer " | |
857 | "count not zero"); | |
858 | break; | |
859 | case 0x05: | |
860 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
861 | "FORMAT 8 - End operation with transfer " | |
862 | "count zero"); | |
863 | break; | |
864 | case 0x06: | |
865 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
866 | "FORMAT 8 - DPS checks after a system " | |
867 | "reset or selective reset"); | |
868 | break; | |
869 | case 0x07: | |
870 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
871 | "FORMAT 8 - DPS cannot be filled"); | |
872 | break; | |
873 | case 0x08: | |
874 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
875 | "FORMAT 8 - Short busy time-out during " | |
876 | "device selection"); | |
877 | break; | |
878 | case 0x09: | |
879 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
880 | "FORMAT 8 - DASD controller failed to " | |
881 | "set or reset the long busy latch"); | |
882 | break; | |
883 | case 0x0A: | |
884 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
885 | "FORMAT 8 - No interruption from device " | |
886 | "during a command chain"); | |
887 | break; | |
888 | default: | |
889 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
890 | "FORMAT 8 - Reserved"); | |
891 | } | |
892 | break; | |
893 | ||
894 | case 0x90: /* Format 9 - Device Read, Write, and Seek Checks */ | |
895 | switch (msg_no) { | |
896 | case 0x00: | |
897 | break; /* No Message */ | |
898 | case 0x06: | |
899 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
900 | "FORMAT 9 - Device check-2 error"); | |
901 | break; | |
902 | case 0x07: | |
903 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
904 | "FORMAT 9 - Head address did not compare"); | |
905 | break; | |
906 | case 0x0A: | |
907 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
908 | "FORMAT 9 - Track physical address did " | |
909 | "not compare while oriented"); | |
910 | break; | |
911 | case 0x0E: | |
912 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
913 | "FORMAT 9 - Cylinder address did not " | |
914 | "compare"); | |
915 | break; | |
916 | default: | |
917 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
918 | "FORMAT 9 - Reserved"); | |
919 | } | |
920 | break; | |
921 | ||
922 | case 0xF0: /* Format F - Cache Storage Checks */ | |
923 | switch (msg_no) { | |
924 | case 0x00: | |
925 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
926 | "FORMAT F - Operation Terminated"); | |
927 | break; | |
928 | case 0x01: | |
929 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
930 | "FORMAT F - Subsystem Processing Error"); | |
931 | break; | |
932 | case 0x02: | |
933 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
934 | "FORMAT F - Cache or nonvolatile storage " | |
935 | "equipment failure"); | |
936 | break; | |
937 | case 0x04: | |
938 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
939 | "FORMAT F - Caching terminated"); | |
940 | break; | |
941 | case 0x06: | |
942 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
943 | "FORMAT F - Cache fast write access not " | |
944 | "authorized"); | |
945 | break; | |
946 | case 0x07: | |
947 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
948 | "FORMAT F - Track format incorrect"); | |
949 | break; | |
950 | case 0x09: | |
951 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
952 | "FORMAT F - Caching reinitiated"); | |
953 | break; | |
954 | case 0x0A: | |
955 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
956 | "FORMAT F - Nonvolatile storage " | |
957 | "terminated"); | |
958 | break; | |
959 | case 0x0B: | |
960 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
961 | "FORMAT F - Volume is suspended duplex"); | |
20c64468 SW |
962 | /* call extended error reporting (EER) */ |
963 | dasd_eer_write(device, erp->refers, | |
964 | DASD_EER_PPRCSUSPEND); | |
1da177e4 LT |
965 | break; |
966 | case 0x0C: | |
967 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
968 | "FORMAT F - Subsystem status connot be " | |
969 | "determined"); | |
970 | break; | |
971 | case 0x0D: | |
972 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
973 | "FORMAT F - Caching status reset to " | |
974 | "default"); | |
975 | break; | |
976 | case 0x0E: | |
977 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
978 | "FORMAT F - DASD Fast Write inhibited"); | |
979 | break; | |
980 | default: | |
981 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
982 | "FORMAT D - Reserved"); | |
983 | } | |
984 | break; | |
985 | ||
986 | default: /* unknown message format - should not happen */ | |
987 | DEV_MESSAGE (KERN_WARNING, device, | |
988 | "unknown message format %02x", | |
989 | msg_format); | |
990 | break; | |
991 | } /* end switch message format */ | |
992 | ||
993 | } /* end dasd_3990_handle_env_data */ | |
994 | ||
995 | /* | |
996 | * DASD_3990_ERP_COM_REJ | |
997 | * | |
998 | * DESCRIPTION | |
999 | * Handles 24 byte 'Command Reject' error. | |
1000 | * | |
1001 | * PARAMETER | |
1002 | * erp current erp_head | |
1003 | * sense current sense data | |
138c014d | 1004 | * |
1da177e4 | 1005 | * RETURN VALUES |
138c014d | 1006 | * erp 'new' erp_head - pointer to new ERP |
1da177e4 LT |
1007 | */ |
1008 | static struct dasd_ccw_req * | |
1009 | dasd_3990_erp_com_rej(struct dasd_ccw_req * erp, char *sense) | |
1010 | { | |
1011 | ||
8e09f215 | 1012 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1013 | |
1014 | erp->function = dasd_3990_erp_com_rej; | |
1015 | ||
1016 | /* env data present (ACTION 10 - retry should work) */ | |
1017 | if (sense[2] & SNS2_ENV_DATA_PRESENT) { | |
1018 | ||
1019 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1020 | "Command Reject - environmental data present"); | |
1021 | ||
1022 | dasd_3990_handle_env_data(erp, sense); | |
1023 | ||
1024 | erp->retries = 5; | |
1025 | ||
1026 | } else { | |
1027 | /* fatal error - set status to FAILED */ | |
1028 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
1029 | "Command Reject - Fatal error"); | |
1030 | ||
1031 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
1032 | } | |
1033 | ||
1034 | return erp; | |
1035 | ||
1036 | } /* end dasd_3990_erp_com_rej */ | |
1037 | ||
1038 | /* | |
138c014d | 1039 | * DASD_3990_ERP_BUS_OUT |
1da177e4 LT |
1040 | * |
1041 | * DESCRIPTION | |
1042 | * Handles 24 byte 'Bus Out Parity Check' error. | |
1043 | * | |
1044 | * PARAMETER | |
1045 | * erp current erp_head | |
1046 | * RETURN VALUES | |
1047 | * erp new erp_head - pointer to new ERP | |
1048 | */ | |
1049 | static struct dasd_ccw_req * | |
1050 | dasd_3990_erp_bus_out(struct dasd_ccw_req * erp) | |
1051 | { | |
1052 | ||
8e09f215 | 1053 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1054 | |
1055 | /* first time set initial retry counter and erp_function */ | |
1056 | /* and retry once without blocking queue */ | |
1057 | /* (this enables easier enqueing of the cqr) */ | |
1058 | if (erp->function != dasd_3990_erp_bus_out) { | |
1059 | erp->retries = 256; | |
1060 | erp->function = dasd_3990_erp_bus_out; | |
1061 | ||
1062 | } else { | |
1063 | ||
1064 | /* issue a message and wait for 'device ready' interrupt */ | |
1065 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1066 | "bus out parity error or BOPC requested by " | |
1067 | "channel"); | |
1068 | ||
1069 | dasd_3990_erp_block_queue(erp, 60*HZ); | |
1070 | ||
1071 | } | |
1072 | ||
1073 | return erp; | |
1074 | ||
1075 | } /* end dasd_3990_erp_bus_out */ | |
1076 | ||
1077 | /* | |
1078 | * DASD_3990_ERP_EQUIP_CHECK | |
1079 | * | |
1080 | * DESCRIPTION | |
1081 | * Handles 24 byte 'Equipment Check' error. | |
1082 | * | |
1083 | * PARAMETER | |
1084 | * erp current erp_head | |
1085 | * RETURN VALUES | |
1086 | * erp new erp_head - pointer to new ERP | |
1087 | */ | |
1088 | static struct dasd_ccw_req * | |
1089 | dasd_3990_erp_equip_check(struct dasd_ccw_req * erp, char *sense) | |
1090 | { | |
1091 | ||
8e09f215 | 1092 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1093 | |
1094 | erp->function = dasd_3990_erp_equip_check; | |
1095 | ||
1096 | if (sense[1] & SNS1_WRITE_INHIBITED) { | |
1097 | ||
1098 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1099 | "Write inhibited path encountered"); | |
1100 | ||
1101 | /* vary path offline */ | |
1102 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
1103 | "Path should be varied off-line. " | |
1104 | "This is not implemented yet \n - please report " | |
1105 | "to linux390@de.ibm.com"); | |
1106 | ||
1107 | erp = dasd_3990_erp_action_1(erp); | |
1108 | ||
1109 | } else if (sense[2] & SNS2_ENV_DATA_PRESENT) { | |
1110 | ||
1111 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1112 | "Equipment Check - " "environmental data present"); | |
1113 | ||
1114 | dasd_3990_handle_env_data(erp, sense); | |
1115 | ||
1116 | erp = dasd_3990_erp_action_4(erp, sense); | |
1117 | ||
1118 | } else if (sense[1] & SNS1_PERM_ERR) { | |
1119 | ||
1120 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1121 | "Equipment Check - retry exhausted or " | |
1122 | "undesirable"); | |
1123 | ||
1124 | erp = dasd_3990_erp_action_1(erp); | |
1125 | ||
1126 | } else { | |
1127 | /* all other equipment checks - Action 5 */ | |
1128 | /* rest is done when retries == 0 */ | |
1129 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1130 | "Equipment check or processing error"); | |
1131 | ||
1132 | erp = dasd_3990_erp_action_5(erp); | |
1133 | } | |
1da177e4 LT |
1134 | return erp; |
1135 | ||
1136 | } /* end dasd_3990_erp_equip_check */ | |
1137 | ||
1138 | /* | |
1139 | * DASD_3990_ERP_DATA_CHECK | |
1140 | * | |
1141 | * DESCRIPTION | |
1142 | * Handles 24 byte 'Data Check' error. | |
1143 | * | |
1144 | * PARAMETER | |
1145 | * erp current erp_head | |
1146 | * RETURN VALUES | |
1147 | * erp new erp_head - pointer to new ERP | |
1148 | */ | |
1149 | static struct dasd_ccw_req * | |
1150 | dasd_3990_erp_data_check(struct dasd_ccw_req * erp, char *sense) | |
1151 | { | |
1152 | ||
8e09f215 | 1153 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1154 | |
1155 | erp->function = dasd_3990_erp_data_check; | |
1156 | ||
1157 | if (sense[2] & SNS2_CORRECTABLE) { /* correctable data check */ | |
1158 | ||
1159 | /* issue message that the data has been corrected */ | |
1160 | DEV_MESSAGE(KERN_EMERG, device, "%s", | |
1161 | "Data recovered during retry with PCI " | |
1162 | "fetch mode active"); | |
1163 | ||
1164 | /* not possible to handle this situation in Linux */ | |
1165 | panic("No way to inform application about the possibly " | |
1166 | "incorrect data"); | |
1167 | ||
1168 | } else if (sense[2] & SNS2_ENV_DATA_PRESENT) { | |
1169 | ||
1170 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1171 | "Uncorrectable data check recovered secondary " | |
1172 | "addr of duplex pair"); | |
1173 | ||
1174 | erp = dasd_3990_erp_action_4(erp, sense); | |
1175 | ||
1176 | } else if (sense[1] & SNS1_PERM_ERR) { | |
1177 | ||
1178 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1179 | "Uncorrectable data check with internal " | |
1180 | "retry exhausted"); | |
1181 | ||
1182 | erp = dasd_3990_erp_action_1(erp); | |
1183 | ||
1184 | } else { | |
1185 | /* all other data checks */ | |
1186 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1187 | "Uncorrectable data check with retry count " | |
1188 | "exhausted..."); | |
1189 | ||
1190 | erp = dasd_3990_erp_action_5(erp); | |
1191 | } | |
1192 | ||
1193 | return erp; | |
1194 | ||
1195 | } /* end dasd_3990_erp_data_check */ | |
1196 | ||
1197 | /* | |
1198 | * DASD_3990_ERP_OVERRUN | |
1199 | * | |
1200 | * DESCRIPTION | |
1201 | * Handles 24 byte 'Overrun' error. | |
1202 | * | |
1203 | * PARAMETER | |
1204 | * erp current erp_head | |
1205 | * RETURN VALUES | |
1206 | * erp new erp_head - pointer to new ERP | |
1207 | */ | |
1208 | static struct dasd_ccw_req * | |
1209 | dasd_3990_erp_overrun(struct dasd_ccw_req * erp, char *sense) | |
1210 | { | |
1211 | ||
8e09f215 | 1212 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1213 | |
1214 | erp->function = dasd_3990_erp_overrun; | |
1215 | ||
1216 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1217 | "Overrun - service overrun or overrun" | |
1218 | " error requested by channel"); | |
1219 | ||
1220 | erp = dasd_3990_erp_action_5(erp); | |
1221 | ||
1222 | return erp; | |
1223 | ||
1224 | } /* end dasd_3990_erp_overrun */ | |
1225 | ||
1226 | /* | |
1227 | * DASD_3990_ERP_INV_FORMAT | |
1228 | * | |
1229 | * DESCRIPTION | |
1230 | * Handles 24 byte 'Invalid Track Format' error. | |
1231 | * | |
1232 | * PARAMETER | |
1233 | * erp current erp_head | |
1234 | * RETURN VALUES | |
1235 | * erp new erp_head - pointer to new ERP | |
1236 | */ | |
1237 | static struct dasd_ccw_req * | |
1238 | dasd_3990_erp_inv_format(struct dasd_ccw_req * erp, char *sense) | |
1239 | { | |
1240 | ||
8e09f215 | 1241 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1242 | |
1243 | erp->function = dasd_3990_erp_inv_format; | |
1244 | ||
1245 | if (sense[2] & SNS2_ENV_DATA_PRESENT) { | |
1246 | ||
1247 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1248 | "Track format error when destaging or " | |
1249 | "staging data"); | |
1250 | ||
1251 | dasd_3990_handle_env_data(erp, sense); | |
1252 | ||
1253 | erp = dasd_3990_erp_action_4(erp, sense); | |
1254 | ||
1255 | } else { | |
1256 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
8e09f215 | 1257 | "Invalid Track Format - Fatal error"); |
1da177e4 LT |
1258 | |
1259 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
1260 | } | |
1261 | ||
1262 | return erp; | |
1263 | ||
1264 | } /* end dasd_3990_erp_inv_format */ | |
1265 | ||
1266 | /* | |
1267 | * DASD_3990_ERP_EOC | |
1268 | * | |
1269 | * DESCRIPTION | |
1270 | * Handles 24 byte 'End-of-Cylinder' error. | |
1271 | * | |
1272 | * PARAMETER | |
1273 | * erp already added default erp | |
1274 | * RETURN VALUES | |
1275 | * erp pointer to original (failed) cqr. | |
1276 | */ | |
1277 | static struct dasd_ccw_req * | |
1278 | dasd_3990_erp_EOC(struct dasd_ccw_req * default_erp, char *sense) | |
1279 | { | |
1280 | ||
8e09f215 | 1281 | struct dasd_device *device = default_erp->startdev; |
1da177e4 LT |
1282 | |
1283 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
1284 | "End-of-Cylinder - must never happen"); | |
1285 | ||
1286 | /* implement action 7 - BUG */ | |
1287 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); | |
1288 | ||
1289 | } /* end dasd_3990_erp_EOC */ | |
1290 | ||
1291 | /* | |
1292 | * DASD_3990_ERP_ENV_DATA | |
1293 | * | |
1294 | * DESCRIPTION | |
1295 | * Handles 24 byte 'Environmental-Data Present' error. | |
1296 | * | |
1297 | * PARAMETER | |
1298 | * erp current erp_head | |
1299 | * RETURN VALUES | |
1300 | * erp new erp_head - pointer to new ERP | |
1301 | */ | |
1302 | static struct dasd_ccw_req * | |
1303 | dasd_3990_erp_env_data(struct dasd_ccw_req * erp, char *sense) | |
1304 | { | |
1305 | ||
8e09f215 | 1306 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1307 | |
1308 | erp->function = dasd_3990_erp_env_data; | |
1309 | ||
1310 | DEV_MESSAGE(KERN_DEBUG, device, "%s", "Environmental data present"); | |
1311 | ||
1312 | dasd_3990_handle_env_data(erp, sense); | |
1313 | ||
1314 | /* don't retry on disabled interface */ | |
1315 | if (sense[7] != 0x0F) { | |
1da177e4 LT |
1316 | erp = dasd_3990_erp_action_4(erp, sense); |
1317 | } else { | |
8e09f215 | 1318 | erp->status = DASD_CQR_FILLED; |
1da177e4 LT |
1319 | } |
1320 | ||
1321 | return erp; | |
1322 | ||
1323 | } /* end dasd_3990_erp_env_data */ | |
1324 | ||
1325 | /* | |
1326 | * DASD_3990_ERP_NO_REC | |
1327 | * | |
1328 | * DESCRIPTION | |
1329 | * Handles 24 byte 'No Record Found' error. | |
1330 | * | |
1331 | * PARAMETER | |
1332 | * erp already added default ERP | |
138c014d | 1333 | * |
1da177e4 LT |
1334 | * RETURN VALUES |
1335 | * erp new erp_head - pointer to new ERP | |
1336 | */ | |
1337 | static struct dasd_ccw_req * | |
1338 | dasd_3990_erp_no_rec(struct dasd_ccw_req * default_erp, char *sense) | |
1339 | { | |
1340 | ||
8e09f215 | 1341 | struct dasd_device *device = default_erp->startdev; |
1da177e4 LT |
1342 | |
1343 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
8e09f215 | 1344 | "No Record Found - Fatal error "); |
1da177e4 LT |
1345 | |
1346 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); | |
1347 | ||
1348 | } /* end dasd_3990_erp_no_rec */ | |
1349 | ||
1350 | /* | |
1351 | * DASD_3990_ERP_FILE_PROT | |
1352 | * | |
1353 | * DESCRIPTION | |
1354 | * Handles 24 byte 'File Protected' error. | |
1355 | * Note: Seek related recovery is not implemented because | |
1356 | * wee don't use the seek command yet. | |
1357 | * | |
1358 | * PARAMETER | |
1359 | * erp current erp_head | |
1360 | * RETURN VALUES | |
1361 | * erp new erp_head - pointer to new ERP | |
1362 | */ | |
1363 | static struct dasd_ccw_req * | |
1364 | dasd_3990_erp_file_prot(struct dasd_ccw_req * erp) | |
1365 | { | |
1366 | ||
8e09f215 | 1367 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1368 | |
1369 | DEV_MESSAGE(KERN_ERR, device, "%s", "File Protected"); | |
1370 | ||
1371 | return dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
1372 | ||
1373 | } /* end dasd_3990_erp_file_prot */ | |
1374 | ||
8e09f215 SW |
1375 | /* |
1376 | * DASD_3990_ERP_INSPECT_ALIAS | |
1377 | * | |
1378 | * DESCRIPTION | |
1379 | * Checks if the original request was started on an alias device. | |
1380 | * If yes, it modifies the original and the erp request so that | |
1381 | * the erp request can be started on a base device. | |
1382 | * | |
1383 | * PARAMETER | |
1384 | * erp pointer to the currently created default ERP | |
1385 | * | |
1386 | * RETURN VALUES | |
1387 | * erp pointer to the modified ERP, or NULL | |
1388 | */ | |
1389 | ||
1390 | static struct dasd_ccw_req *dasd_3990_erp_inspect_alias( | |
1391 | struct dasd_ccw_req *erp) | |
1392 | { | |
1393 | struct dasd_ccw_req *cqr = erp->refers; | |
1394 | ||
1395 | if (cqr->block && | |
1396 | (cqr->block->base != cqr->startdev)) { | |
1397 | if (cqr->startdev->features & DASD_FEATURE_ERPLOG) { | |
1398 | DEV_MESSAGE(KERN_ERR, cqr->startdev, | |
1399 | "ERP on alias device for request %p," | |
1400 | " recover on base device %s", cqr, | |
1401 | cqr->block->base->cdev->dev.bus_id); | |
1402 | } | |
1403 | dasd_eckd_reset_ccw_to_base_io(cqr); | |
1404 | erp->startdev = cqr->block->base; | |
1405 | erp->function = dasd_3990_erp_inspect_alias; | |
1406 | return erp; | |
1407 | } else | |
1408 | return NULL; | |
1409 | } | |
1410 | ||
1411 | ||
1da177e4 | 1412 | /* |
138c014d | 1413 | * DASD_3990_ERP_INSPECT_24 |
1da177e4 LT |
1414 | * |
1415 | * DESCRIPTION | |
1416 | * Does a detailed inspection of the 24 byte sense data | |
138c014d | 1417 | * and sets up a related error recovery action. |
1da177e4 LT |
1418 | * |
1419 | * PARAMETER | |
1420 | * sense sense data of the actual error | |
1421 | * erp pointer to the currently created default ERP | |
1422 | * | |
1423 | * RETURN VALUES | |
1424 | * erp pointer to the (addtitional) ERP | |
1425 | */ | |
1426 | static struct dasd_ccw_req * | |
1427 | dasd_3990_erp_inspect_24(struct dasd_ccw_req * erp, char *sense) | |
1428 | { | |
1429 | ||
1430 | struct dasd_ccw_req *erp_filled = NULL; | |
1431 | ||
1432 | /* Check sense for .... */ | |
1433 | /* 'Command Reject' */ | |
1434 | if ((erp_filled == NULL) && (sense[0] & SNS0_CMD_REJECT)) { | |
1435 | erp_filled = dasd_3990_erp_com_rej(erp, sense); | |
1436 | } | |
1437 | /* 'Intervention Required' */ | |
1438 | if ((erp_filled == NULL) && (sense[0] & SNS0_INTERVENTION_REQ)) { | |
1439 | erp_filled = dasd_3990_erp_int_req(erp); | |
1440 | } | |
1441 | /* 'Bus Out Parity Check' */ | |
1442 | if ((erp_filled == NULL) && (sense[0] & SNS0_BUS_OUT_CHECK)) { | |
1443 | erp_filled = dasd_3990_erp_bus_out(erp); | |
1444 | } | |
1445 | /* 'Equipment Check' */ | |
1446 | if ((erp_filled == NULL) && (sense[0] & SNS0_EQUIPMENT_CHECK)) { | |
1447 | erp_filled = dasd_3990_erp_equip_check(erp, sense); | |
1448 | } | |
1449 | /* 'Data Check' */ | |
1450 | if ((erp_filled == NULL) && (sense[0] & SNS0_DATA_CHECK)) { | |
1451 | erp_filled = dasd_3990_erp_data_check(erp, sense); | |
1452 | } | |
1453 | /* 'Overrun' */ | |
1454 | if ((erp_filled == NULL) && (sense[0] & SNS0_OVERRUN)) { | |
1455 | erp_filled = dasd_3990_erp_overrun(erp, sense); | |
1456 | } | |
1457 | /* 'Invalid Track Format' */ | |
1458 | if ((erp_filled == NULL) && (sense[1] & SNS1_INV_TRACK_FORMAT)) { | |
1459 | erp_filled = dasd_3990_erp_inv_format(erp, sense); | |
1460 | } | |
1461 | /* 'End-of-Cylinder' */ | |
1462 | if ((erp_filled == NULL) && (sense[1] & SNS1_EOC)) { | |
1463 | erp_filled = dasd_3990_erp_EOC(erp, sense); | |
1464 | } | |
1465 | /* 'Environmental Data' */ | |
1466 | if ((erp_filled == NULL) && (sense[2] & SNS2_ENV_DATA_PRESENT)) { | |
1467 | erp_filled = dasd_3990_erp_env_data(erp, sense); | |
1468 | } | |
1469 | /* 'No Record Found' */ | |
1470 | if ((erp_filled == NULL) && (sense[1] & SNS1_NO_REC_FOUND)) { | |
1471 | erp_filled = dasd_3990_erp_no_rec(erp, sense); | |
1472 | } | |
1473 | /* 'File Protected' */ | |
1474 | if ((erp_filled == NULL) && (sense[1] & SNS1_FILE_PROTECTED)) { | |
1475 | erp_filled = dasd_3990_erp_file_prot(erp); | |
1476 | } | |
1477 | /* other (unknown) error - do default ERP */ | |
1478 | if (erp_filled == NULL) { | |
1479 | ||
1480 | erp_filled = erp; | |
1481 | } | |
1482 | ||
1483 | return erp_filled; | |
1484 | ||
1485 | } /* END dasd_3990_erp_inspect_24 */ | |
1486 | ||
1487 | /* | |
138c014d | 1488 | ***************************************************************************** |
1da177e4 | 1489 | * 32 byte sense ERP functions (only) |
138c014d | 1490 | ***************************************************************************** |
1da177e4 LT |
1491 | */ |
1492 | ||
1493 | /* | |
138c014d | 1494 | * DASD_3990_ERPACTION_10_32 |
1da177e4 LT |
1495 | * |
1496 | * DESCRIPTION | |
1497 | * Handles 32 byte 'Action 10' of Single Program Action Codes. | |
1498 | * Just retry and if retry doesn't work, return with error. | |
1499 | * | |
1500 | * PARAMETER | |
1501 | * erp current erp_head | |
138c014d | 1502 | * sense current sense data |
1da177e4 LT |
1503 | * RETURN VALUES |
1504 | * erp modified erp_head | |
1505 | */ | |
1506 | static struct dasd_ccw_req * | |
1507 | dasd_3990_erp_action_10_32(struct dasd_ccw_req * erp, char *sense) | |
1508 | { | |
1509 | ||
8e09f215 | 1510 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1511 | |
1512 | erp->retries = 256; | |
1513 | erp->function = dasd_3990_erp_action_10_32; | |
1514 | ||
1515 | DEV_MESSAGE(KERN_DEBUG, device, "%s", "Perform logging requested"); | |
1516 | ||
1517 | return erp; | |
1518 | ||
1519 | } /* end dasd_3990_erp_action_10_32 */ | |
1520 | ||
1521 | /* | |
1522 | * DASD_3990_ERP_ACTION_1B_32 | |
1523 | * | |
1524 | * DESCRIPTION | |
1525 | * Handles 32 byte 'Action 1B' of Single Program Action Codes. | |
138c014d | 1526 | * A write operation could not be finished because of an unexpected |
1da177e4 | 1527 | * condition. |
138c014d HH |
1528 | * The already created 'default erp' is used to get the link to |
1529 | * the erp chain, but it can not be used for this recovery | |
1da177e4 LT |
1530 | * action because it contains no DE/LO data space. |
1531 | * | |
1532 | * PARAMETER | |
1533 | * default_erp already added default erp. | |
138c014d | 1534 | * sense current sense data |
1da177e4 LT |
1535 | * |
1536 | * RETURN VALUES | |
138c014d | 1537 | * erp new erp or |
1da177e4 LT |
1538 | * default_erp in case of imprecise ending or error |
1539 | */ | |
1540 | static struct dasd_ccw_req * | |
1541 | dasd_3990_erp_action_1B_32(struct dasd_ccw_req * default_erp, char *sense) | |
1542 | { | |
1543 | ||
8e09f215 | 1544 | struct dasd_device *device = default_erp->startdev; |
1da177e4 LT |
1545 | __u32 cpa = 0; |
1546 | struct dasd_ccw_req *cqr; | |
1547 | struct dasd_ccw_req *erp; | |
1548 | struct DE_eckd_data *DE_data; | |
8e09f215 | 1549 | struct PFX_eckd_data *PFX_data; |
1da177e4 | 1550 | char *LO_data; /* LO_eckd_data_t */ |
8e09f215 | 1551 | struct ccw1 *ccw, *oldccw; |
1da177e4 LT |
1552 | |
1553 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1554 | "Write not finished because of unexpected condition"); | |
1555 | ||
1556 | default_erp->function = dasd_3990_erp_action_1B_32; | |
1557 | ||
1558 | /* determine the original cqr */ | |
1559 | cqr = default_erp; | |
1560 | ||
1561 | while (cqr->refers != NULL) { | |
1562 | cqr = cqr->refers; | |
1563 | } | |
1564 | ||
1565 | /* for imprecise ending just do default erp */ | |
1566 | if (sense[1] & 0x01) { | |
1567 | ||
1568 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1569 | "Imprecise ending is set - just retry"); | |
1570 | ||
1571 | return default_erp; | |
1572 | } | |
1573 | ||
1574 | /* determine the address of the CCW to be restarted */ | |
1575 | /* Imprecise ending is not set -> addr from IRB-SCSW */ | |
1576 | cpa = default_erp->refers->irb.scsw.cpa; | |
1577 | ||
1578 | if (cpa == 0) { | |
1579 | ||
1580 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1581 | "Unable to determine address of the CCW " | |
1582 | "to be restarted"); | |
1583 | ||
1584 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); | |
1585 | } | |
1586 | ||
1587 | /* Build new ERP request including DE/LO */ | |
1588 | erp = dasd_alloc_erp_request((char *) &cqr->magic, | |
1589 | 2 + 1,/* DE/LO + TIC */ | |
8e09f215 SW |
1590 | sizeof(struct DE_eckd_data) + |
1591 | sizeof(struct LO_eckd_data), device); | |
1da177e4 LT |
1592 | |
1593 | if (IS_ERR(erp)) { | |
1594 | DEV_MESSAGE(KERN_ERR, device, "%s", "Unable to allocate ERP"); | |
1595 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); | |
1596 | } | |
1597 | ||
1598 | /* use original DE */ | |
1599 | DE_data = erp->data; | |
8e09f215 SW |
1600 | oldccw = cqr->cpaddr; |
1601 | if (oldccw->cmd_code == DASD_ECKD_CCW_PFX) { | |
1602 | PFX_data = cqr->data; | |
1603 | memcpy(DE_data, &PFX_data->define_extend, | |
1604 | sizeof(struct DE_eckd_data)); | |
1605 | } else | |
1606 | memcpy(DE_data, cqr->data, sizeof(struct DE_eckd_data)); | |
1da177e4 LT |
1607 | |
1608 | /* create LO */ | |
8e09f215 | 1609 | LO_data = erp->data + sizeof(struct DE_eckd_data); |
1da177e4 LT |
1610 | |
1611 | if ((sense[3] == 0x01) && (LO_data[1] & 0x01)) { | |
1612 | ||
1613 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
1614 | "BUG - this should not happen"); | |
1615 | ||
1616 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); | |
1617 | } | |
1618 | ||
1619 | if ((sense[7] & 0x3F) == 0x01) { | |
1620 | /* operation code is WRITE DATA -> data area orientation */ | |
1621 | LO_data[0] = 0x81; | |
1622 | ||
1623 | } else if ((sense[7] & 0x3F) == 0x03) { | |
1624 | /* operation code is FORMAT WRITE -> index orientation */ | |
1625 | LO_data[0] = 0xC3; | |
1626 | ||
1627 | } else { | |
1628 | LO_data[0] = sense[7]; /* operation */ | |
1629 | } | |
1630 | ||
1631 | LO_data[1] = sense[8]; /* auxiliary */ | |
1632 | LO_data[2] = sense[9]; | |
1633 | LO_data[3] = sense[3]; /* count */ | |
1634 | LO_data[4] = sense[29]; /* seek_addr.cyl */ | |
1635 | LO_data[5] = sense[30]; /* seek_addr.cyl 2nd byte */ | |
1636 | LO_data[7] = sense[31]; /* seek_addr.head 2nd byte */ | |
1637 | ||
1638 | memcpy(&(LO_data[8]), &(sense[11]), 8); | |
1639 | ||
1640 | /* create DE ccw */ | |
1641 | ccw = erp->cpaddr; | |
8e09f215 | 1642 | memset(ccw, 0, sizeof(struct ccw1)); |
1da177e4 LT |
1643 | ccw->cmd_code = DASD_ECKD_CCW_DEFINE_EXTENT; |
1644 | ccw->flags = CCW_FLAG_CC; | |
1645 | ccw->count = 16; | |
1646 | ccw->cda = (__u32)(addr_t) DE_data; | |
1647 | ||
1648 | /* create LO ccw */ | |
1649 | ccw++; | |
8e09f215 | 1650 | memset(ccw, 0, sizeof(struct ccw1)); |
1da177e4 LT |
1651 | ccw->cmd_code = DASD_ECKD_CCW_LOCATE_RECORD; |
1652 | ccw->flags = CCW_FLAG_CC; | |
1653 | ccw->count = 16; | |
1654 | ccw->cda = (__u32)(addr_t) LO_data; | |
1655 | ||
1656 | /* TIC to the failed ccw */ | |
1657 | ccw++; | |
1658 | ccw->cmd_code = CCW_CMD_TIC; | |
1659 | ccw->cda = cpa; | |
1660 | ||
1661 | /* fill erp related fields */ | |
1662 | erp->function = dasd_3990_erp_action_1B_32; | |
1663 | erp->refers = default_erp->refers; | |
8e09f215 SW |
1664 | erp->startdev = device; |
1665 | erp->memdev = device; | |
1da177e4 LT |
1666 | erp->magic = default_erp->magic; |
1667 | erp->expires = 0; | |
1668 | erp->retries = 256; | |
1669 | erp->buildclk = get_clock(); | |
1670 | erp->status = DASD_CQR_FILLED; | |
1671 | ||
1672 | /* remove the default erp */ | |
1673 | dasd_free_erp_request(default_erp, device); | |
1674 | ||
1675 | return erp; | |
1676 | ||
1677 | } /* end dasd_3990_erp_action_1B_32 */ | |
1678 | ||
1679 | /* | |
1680 | * DASD_3990_UPDATE_1B | |
1681 | * | |
1682 | * DESCRIPTION | |
138c014d | 1683 | * Handles the update to the 32 byte 'Action 1B' of Single Program |
1da177e4 LT |
1684 | * Action Codes in case the first action was not successful. |
1685 | * The already created 'previous_erp' is the currently not successful | |
138c014d | 1686 | * ERP. |
1da177e4 LT |
1687 | * |
1688 | * PARAMETER | |
1689 | * previous_erp already created previous erp. | |
138c014d | 1690 | * sense current sense data |
1da177e4 | 1691 | * RETURN VALUES |
138c014d | 1692 | * erp modified erp |
1da177e4 LT |
1693 | */ |
1694 | static struct dasd_ccw_req * | |
1695 | dasd_3990_update_1B(struct dasd_ccw_req * previous_erp, char *sense) | |
1696 | { | |
1697 | ||
8e09f215 | 1698 | struct dasd_device *device = previous_erp->startdev; |
1da177e4 LT |
1699 | __u32 cpa = 0; |
1700 | struct dasd_ccw_req *cqr; | |
1701 | struct dasd_ccw_req *erp; | |
1702 | char *LO_data; /* struct LO_eckd_data */ | |
1703 | struct ccw1 *ccw; | |
1704 | ||
1705 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1706 | "Write not finished because of unexpected condition" | |
1707 | " - follow on"); | |
1708 | ||
1709 | /* determine the original cqr */ | |
1710 | cqr = previous_erp; | |
1711 | ||
1712 | while (cqr->refers != NULL) { | |
1713 | cqr = cqr->refers; | |
1714 | } | |
1715 | ||
1716 | /* for imprecise ending just do default erp */ | |
1717 | if (sense[1] & 0x01) { | |
1718 | ||
1719 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1720 | "Imprecise ending is set - just retry"); | |
1721 | ||
8e09f215 | 1722 | previous_erp->status = DASD_CQR_FILLED; |
1da177e4 LT |
1723 | |
1724 | return previous_erp; | |
1725 | } | |
1726 | ||
1727 | /* determine the address of the CCW to be restarted */ | |
1728 | /* Imprecise ending is not set -> addr from IRB-SCSW */ | |
1729 | cpa = previous_erp->irb.scsw.cpa; | |
1730 | ||
1731 | if (cpa == 0) { | |
1732 | ||
1733 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1734 | "Unable to determine address of the CCW " | |
1735 | "to be restarted"); | |
1736 | ||
1737 | previous_erp->status = DASD_CQR_FAILED; | |
1738 | ||
1739 | return previous_erp; | |
1740 | } | |
1741 | ||
1742 | erp = previous_erp; | |
1743 | ||
1744 | /* update the LO with the new returned sense data */ | |
8e09f215 | 1745 | LO_data = erp->data + sizeof(struct DE_eckd_data); |
1da177e4 LT |
1746 | |
1747 | if ((sense[3] == 0x01) && (LO_data[1] & 0x01)) { | |
1748 | ||
1749 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
1750 | "BUG - this should not happen"); | |
1751 | ||
1752 | previous_erp->status = DASD_CQR_FAILED; | |
1753 | ||
1754 | return previous_erp; | |
1755 | } | |
1756 | ||
1757 | if ((sense[7] & 0x3F) == 0x01) { | |
1758 | /* operation code is WRITE DATA -> data area orientation */ | |
1759 | LO_data[0] = 0x81; | |
1760 | ||
1761 | } else if ((sense[7] & 0x3F) == 0x03) { | |
1762 | /* operation code is FORMAT WRITE -> index orientation */ | |
1763 | LO_data[0] = 0xC3; | |
1764 | ||
1765 | } else { | |
1766 | LO_data[0] = sense[7]; /* operation */ | |
1767 | } | |
1768 | ||
1769 | LO_data[1] = sense[8]; /* auxiliary */ | |
1770 | LO_data[2] = sense[9]; | |
1771 | LO_data[3] = sense[3]; /* count */ | |
1772 | LO_data[4] = sense[29]; /* seek_addr.cyl */ | |
1773 | LO_data[5] = sense[30]; /* seek_addr.cyl 2nd byte */ | |
1774 | LO_data[7] = sense[31]; /* seek_addr.head 2nd byte */ | |
1775 | ||
1776 | memcpy(&(LO_data[8]), &(sense[11]), 8); | |
1777 | ||
1778 | /* TIC to the failed ccw */ | |
1779 | ccw = erp->cpaddr; /* addr of DE ccw */ | |
1780 | ccw++; /* addr of LE ccw */ | |
1781 | ccw++; /* addr of TIC ccw */ | |
1782 | ccw->cda = cpa; | |
1783 | ||
8e09f215 | 1784 | erp->status = DASD_CQR_FILLED; |
1da177e4 LT |
1785 | |
1786 | return erp; | |
1787 | ||
1788 | } /* end dasd_3990_update_1B */ | |
1789 | ||
1790 | /* | |
138c014d | 1791 | * DASD_3990_ERP_COMPOUND_RETRY |
1da177e4 LT |
1792 | * |
1793 | * DESCRIPTION | |
1794 | * Handles the compound ERP action retry code. | |
1795 | * NOTE: At least one retry is done even if zero is specified | |
1796 | * by the sense data. This makes enqueueing of the request | |
1797 | * easier. | |
1798 | * | |
1799 | * PARAMETER | |
1800 | * sense sense data of the actual error | |
1801 | * erp pointer to the currently created ERP | |
1802 | * | |
1803 | * RETURN VALUES | |
1804 | * erp modified ERP pointer | |
1805 | * | |
1806 | */ | |
1807 | static void | |
1808 | dasd_3990_erp_compound_retry(struct dasd_ccw_req * erp, char *sense) | |
1809 | { | |
1810 | ||
1811 | switch (sense[25] & 0x03) { | |
1812 | case 0x00: /* no not retry */ | |
1813 | erp->retries = 1; | |
1814 | break; | |
1815 | ||
1816 | case 0x01: /* retry 2 times */ | |
1817 | erp->retries = 2; | |
1818 | break; | |
1819 | ||
1820 | case 0x02: /* retry 10 times */ | |
1821 | erp->retries = 10; | |
1822 | break; | |
1823 | ||
1824 | case 0x03: /* retry 256 times */ | |
1825 | erp->retries = 256; | |
1826 | break; | |
1827 | ||
1828 | default: | |
1829 | BUG(); | |
1830 | } | |
1831 | ||
1832 | erp->function = dasd_3990_erp_compound_retry; | |
1833 | ||
1834 | } /* end dasd_3990_erp_compound_retry */ | |
1835 | ||
1836 | /* | |
138c014d | 1837 | * DASD_3990_ERP_COMPOUND_PATH |
1da177e4 LT |
1838 | * |
1839 | * DESCRIPTION | |
1840 | * Handles the compound ERP action for retry on alternate | |
1841 | * channel path. | |
1842 | * | |
1843 | * PARAMETER | |
1844 | * sense sense data of the actual error | |
1845 | * erp pointer to the currently created ERP | |
1846 | * | |
1847 | * RETURN VALUES | |
1848 | * erp modified ERP pointer | |
1849 | * | |
1850 | */ | |
1851 | static void | |
1852 | dasd_3990_erp_compound_path(struct dasd_ccw_req * erp, char *sense) | |
1853 | { | |
1854 | ||
1855 | if (sense[25] & DASD_SENSE_BIT_3) { | |
1856 | dasd_3990_erp_alternate_path(erp); | |
1857 | ||
1858 | if (erp->status == DASD_CQR_FAILED) { | |
138c014d | 1859 | /* reset the lpm and the status to be able to |
1da177e4 LT |
1860 | * try further actions. */ |
1861 | ||
1862 | erp->lpm = 0; | |
8e09f215 | 1863 | erp->status = DASD_CQR_NEED_ERP; |
1da177e4 LT |
1864 | } |
1865 | } | |
1866 | ||
1867 | erp->function = dasd_3990_erp_compound_path; | |
1868 | ||
1869 | } /* end dasd_3990_erp_compound_path */ | |
1870 | ||
1871 | /* | |
138c014d | 1872 | * DASD_3990_ERP_COMPOUND_CODE |
1da177e4 LT |
1873 | * |
1874 | * DESCRIPTION | |
1875 | * Handles the compound ERP action for retry code. | |
1876 | * | |
1877 | * PARAMETER | |
1878 | * sense sense data of the actual error | |
1879 | * erp pointer to the currently created ERP | |
1880 | * | |
1881 | * RETURN VALUES | |
1882 | * erp NEW ERP pointer | |
1883 | * | |
1884 | */ | |
1885 | static struct dasd_ccw_req * | |
1886 | dasd_3990_erp_compound_code(struct dasd_ccw_req * erp, char *sense) | |
1887 | { | |
1888 | ||
1889 | if (sense[25] & DASD_SENSE_BIT_2) { | |
1890 | ||
1891 | switch (sense[28]) { | |
1892 | case 0x17: | |
138c014d | 1893 | /* issue a Diagnostic Control command with an |
3a4fa0a2 | 1894 | * Inhibit Write subcommand and controller modifier */ |
1da177e4 LT |
1895 | erp = dasd_3990_erp_DCTL(erp, 0x20); |
1896 | break; | |
138c014d | 1897 | |
1da177e4 LT |
1898 | case 0x25: |
1899 | /* wait for 5 seconds and retry again */ | |
1900 | erp->retries = 1; | |
138c014d | 1901 | |
1da177e4 LT |
1902 | dasd_3990_erp_block_queue (erp, 5*HZ); |
1903 | break; | |
138c014d | 1904 | |
1da177e4 LT |
1905 | default: |
1906 | /* should not happen - continue */ | |
1907 | break; | |
1908 | } | |
1909 | } | |
1910 | ||
1911 | erp->function = dasd_3990_erp_compound_code; | |
1912 | ||
1913 | return erp; | |
1914 | ||
1915 | } /* end dasd_3990_erp_compound_code */ | |
1916 | ||
1917 | /* | |
138c014d | 1918 | * DASD_3990_ERP_COMPOUND_CONFIG |
1da177e4 LT |
1919 | * |
1920 | * DESCRIPTION | |
1921 | * Handles the compound ERP action for configruation | |
1922 | * dependent error. | |
1923 | * Note: duplex handling is not implemented (yet). | |
1924 | * | |
1925 | * PARAMETER | |
1926 | * sense sense data of the actual error | |
1927 | * erp pointer to the currently created ERP | |
1928 | * | |
1929 | * RETURN VALUES | |
1930 | * erp modified ERP pointer | |
1931 | * | |
1932 | */ | |
1933 | static void | |
1934 | dasd_3990_erp_compound_config(struct dasd_ccw_req * erp, char *sense) | |
1935 | { | |
1936 | ||
1937 | if ((sense[25] & DASD_SENSE_BIT_1) && (sense[26] & DASD_SENSE_BIT_2)) { | |
1938 | ||
1939 | /* set to suspended duplex state then restart */ | |
8e09f215 | 1940 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1941 | |
1942 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
1943 | "Set device to suspended duplex state should be " | |
1944 | "done!\n" | |
1945 | "This is not implemented yet (for compound ERP)" | |
1946 | " - please report to linux390@de.ibm.com"); | |
1947 | ||
1948 | } | |
1949 | ||
1950 | erp->function = dasd_3990_erp_compound_config; | |
1951 | ||
1952 | } /* end dasd_3990_erp_compound_config */ | |
1953 | ||
1954 | /* | |
138c014d | 1955 | * DASD_3990_ERP_COMPOUND |
1da177e4 LT |
1956 | * |
1957 | * DESCRIPTION | |
138c014d | 1958 | * Does the further compound program action if |
1da177e4 LT |
1959 | * compound retry was not successful. |
1960 | * | |
1961 | * PARAMETER | |
1962 | * sense sense data of the actual error | |
1963 | * erp pointer to the current (failed) ERP | |
1964 | * | |
1965 | * RETURN VALUES | |
1966 | * erp (additional) ERP pointer | |
1967 | * | |
1968 | */ | |
1969 | static struct dasd_ccw_req * | |
1970 | dasd_3990_erp_compound(struct dasd_ccw_req * erp, char *sense) | |
1971 | { | |
1972 | ||
1973 | if ((erp->function == dasd_3990_erp_compound_retry) && | |
8e09f215 | 1974 | (erp->status == DASD_CQR_NEED_ERP)) { |
1da177e4 LT |
1975 | |
1976 | dasd_3990_erp_compound_path(erp, sense); | |
1977 | } | |
1978 | ||
1979 | if ((erp->function == dasd_3990_erp_compound_path) && | |
8e09f215 | 1980 | (erp->status == DASD_CQR_NEED_ERP)) { |
1da177e4 LT |
1981 | |
1982 | erp = dasd_3990_erp_compound_code(erp, sense); | |
1983 | } | |
1984 | ||
1985 | if ((erp->function == dasd_3990_erp_compound_code) && | |
8e09f215 | 1986 | (erp->status == DASD_CQR_NEED_ERP)) { |
1da177e4 LT |
1987 | |
1988 | dasd_3990_erp_compound_config(erp, sense); | |
1989 | } | |
1990 | ||
1991 | /* if no compound action ERP specified, the request failed */ | |
8e09f215 | 1992 | if (erp->status == DASD_CQR_NEED_ERP) |
1da177e4 | 1993 | erp->status = DASD_CQR_FAILED; |
1da177e4 LT |
1994 | |
1995 | return erp; | |
1996 | ||
1997 | } /* end dasd_3990_erp_compound */ | |
1998 | ||
1999 | /* | |
138c014d | 2000 | * DASD_3990_ERP_INSPECT_32 |
1da177e4 LT |
2001 | * |
2002 | * DESCRIPTION | |
2003 | * Does a detailed inspection of the 32 byte sense data | |
138c014d | 2004 | * and sets up a related error recovery action. |
1da177e4 LT |
2005 | * |
2006 | * PARAMETER | |
2007 | * sense sense data of the actual error | |
2008 | * erp pointer to the currently created default ERP | |
2009 | * | |
2010 | * RETURN VALUES | |
2011 | * erp_filled pointer to the ERP | |
2012 | * | |
2013 | */ | |
2014 | static struct dasd_ccw_req * | |
2015 | dasd_3990_erp_inspect_32(struct dasd_ccw_req * erp, char *sense) | |
2016 | { | |
2017 | ||
8e09f215 | 2018 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
2019 | |
2020 | erp->function = dasd_3990_erp_inspect_32; | |
2021 | ||
2022 | if (sense[25] & DASD_SENSE_BIT_0) { | |
2023 | ||
2024 | /* compound program action codes (byte25 bit 0 == '1') */ | |
2025 | dasd_3990_erp_compound_retry(erp, sense); | |
2026 | ||
2027 | } else { | |
2028 | ||
2029 | /* single program action codes (byte25 bit 0 == '0') */ | |
2030 | switch (sense[25]) { | |
2031 | ||
2032 | case 0x00: /* success - use default ERP for retries */ | |
2033 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
2034 | "ERP called for successful request" | |
2035 | " - just retry"); | |
2036 | break; | |
2037 | ||
2038 | case 0x01: /* fatal error */ | |
2039 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
8e09f215 | 2040 | "Retry not recommended - Fatal error"); |
1da177e4 LT |
2041 | |
2042 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
2043 | break; | |
2044 | ||
2045 | case 0x02: /* intervention required */ | |
2046 | case 0x03: /* intervention required during dual copy */ | |
2047 | erp = dasd_3990_erp_int_req(erp); | |
2048 | break; | |
2049 | ||
2050 | case 0x0F: /* length mismatch during update write command */ | |
2051 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
2052 | "update write command error - should not " | |
2053 | "happen;\n" | |
2054 | "Please send this message together with " | |
2055 | "the above sense data to linux390@de." | |
2056 | "ibm.com"); | |
2057 | ||
2058 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
2059 | break; | |
2060 | ||
2061 | case 0x10: /* logging required for other channel program */ | |
2062 | erp = dasd_3990_erp_action_10_32(erp, sense); | |
2063 | break; | |
2064 | ||
2065 | case 0x15: /* next track outside defined extend */ | |
2066 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
2067 | "next track outside defined extend - " | |
2068 | "should not happen;\n" | |
2069 | "Please send this message together with " | |
2070 | "the above sense data to linux390@de." | |
2071 | "ibm.com"); | |
2072 | ||
2073 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
2074 | break; | |
2075 | ||
2076 | case 0x1B: /* unexpected condition during write */ | |
2077 | ||
2078 | erp = dasd_3990_erp_action_1B_32(erp, sense); | |
2079 | break; | |
2080 | ||
2081 | case 0x1C: /* invalid data */ | |
2082 | DEV_MESSAGE(KERN_EMERG, device, "%s", | |
2083 | "Data recovered during retry with PCI " | |
2084 | "fetch mode active"); | |
2085 | ||
2086 | /* not possible to handle this situation in Linux */ | |
2087 | panic | |
2088 | ("Invalid data - No way to inform application " | |
2089 | "about the possibly incorrect data"); | |
2090 | break; | |
2091 | ||
2092 | case 0x1D: /* state-change pending */ | |
2093 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
2094 | "A State change pending condition exists " | |
2095 | "for the subsystem or device"); | |
2096 | ||
2097 | erp = dasd_3990_erp_action_4(erp, sense); | |
2098 | break; | |
2099 | ||
2100 | case 0x1E: /* busy */ | |
2101 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
2102 | "Busy condition exists " | |
2103 | "for the subsystem or device"); | |
2104 | erp = dasd_3990_erp_action_4(erp, sense); | |
2105 | break; | |
2106 | ||
2107 | default: /* all others errors - default erp */ | |
2108 | break; | |
2109 | } | |
2110 | } | |
2111 | ||
2112 | return erp; | |
2113 | ||
2114 | } /* end dasd_3990_erp_inspect_32 */ | |
2115 | ||
2116 | /* | |
138c014d | 2117 | ***************************************************************************** |
1da177e4 | 2118 | * main ERP control fuctions (24 and 32 byte sense) |
138c014d | 2119 | ***************************************************************************** |
1da177e4 LT |
2120 | */ |
2121 | ||
2122 | /* | |
2123 | * DASD_3990_ERP_INSPECT | |
2124 | * | |
2125 | * DESCRIPTION | |
2126 | * Does a detailed inspection for sense data by calling either | |
2127 | * the 24-byte or the 32-byte inspection routine. | |
2128 | * | |
2129 | * PARAMETER | |
2130 | * erp pointer to the currently created default ERP | |
2131 | * RETURN VALUES | |
138c014d | 2132 | * erp_new contens was possibly modified |
1da177e4 LT |
2133 | */ |
2134 | static struct dasd_ccw_req * | |
2135 | dasd_3990_erp_inspect(struct dasd_ccw_req * erp) | |
2136 | { | |
2137 | ||
2138 | struct dasd_ccw_req *erp_new = NULL; | |
2139 | /* sense data are located in the refers record of the */ | |
2140 | /* already set up new ERP ! */ | |
2141 | char *sense = erp->refers->irb.ecw; | |
2142 | ||
8e09f215 SW |
2143 | /* if this problem occured on an alias retry on base */ |
2144 | erp_new = dasd_3990_erp_inspect_alias(erp); | |
2145 | if (erp_new) | |
2146 | return erp_new; | |
2147 | ||
1da177e4 LT |
2148 | /* distinguish between 24 and 32 byte sense data */ |
2149 | if (sense[27] & DASD_SENSE_BIT_0) { | |
2150 | ||
2151 | /* inspect the 24 byte sense data */ | |
2152 | erp_new = dasd_3990_erp_inspect_24(erp, sense); | |
2153 | ||
2154 | } else { | |
2155 | ||
2156 | /* inspect the 32 byte sense data */ | |
2157 | erp_new = dasd_3990_erp_inspect_32(erp, sense); | |
2158 | ||
2159 | } /* end distinguish between 24 and 32 byte sense data */ | |
2160 | ||
2161 | return erp_new; | |
2162 | } | |
2163 | ||
2164 | /* | |
2165 | * DASD_3990_ERP_ADD_ERP | |
138c014d | 2166 | * |
1da177e4 LT |
2167 | * DESCRIPTION |
2168 | * This funtion adds an additional request block (ERP) to the head of | |
2169 | * the given cqr (or erp). | |
2170 | * This erp is initialized as an default erp (retry TIC) | |
2171 | * | |
2172 | * PARAMETER | |
138c014d | 2173 | * cqr head of the current ERP-chain (or single cqr if |
1da177e4 LT |
2174 | * first error) |
2175 | * RETURN VALUES | |
2176 | * erp pointer to new ERP-chain head | |
2177 | */ | |
2178 | static struct dasd_ccw_req * | |
2179 | dasd_3990_erp_add_erp(struct dasd_ccw_req * cqr) | |
2180 | { | |
2181 | ||
8e09f215 | 2182 | struct dasd_device *device = cqr->startdev; |
1da177e4 LT |
2183 | struct ccw1 *ccw; |
2184 | ||
2185 | /* allocate additional request block */ | |
2186 | struct dasd_ccw_req *erp; | |
2187 | ||
8e09f215 | 2188 | erp = dasd_alloc_erp_request((char *) &cqr->magic, 2, 0, device); |
1da177e4 LT |
2189 | if (IS_ERR(erp)) { |
2190 | if (cqr->retries <= 0) { | |
2191 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
2192 | "Unable to allocate ERP request"); | |
2193 | cqr->status = DASD_CQR_FAILED; | |
2194 | cqr->stopclk = get_clock (); | |
2195 | } else { | |
2196 | DEV_MESSAGE (KERN_ERR, device, | |
2197 | "Unable to allocate ERP request " | |
2198 | "(%i retries left)", | |
2199 | cqr->retries); | |
8e09f215 | 2200 | dasd_block_set_timer(device->block, (HZ << 3)); |
1da177e4 LT |
2201 | } |
2202 | return cqr; | |
2203 | } | |
2204 | ||
2205 | /* initialize request with default TIC to current ERP/CQR */ | |
2206 | ccw = erp->cpaddr; | |
2207 | ccw->cmd_code = CCW_CMD_NOOP; | |
2208 | ccw->flags = CCW_FLAG_CC; | |
2209 | ccw++; | |
2210 | ccw->cmd_code = CCW_CMD_TIC; | |
2211 | ccw->cda = (long)(cqr->cpaddr); | |
2212 | erp->function = dasd_3990_erp_add_erp; | |
2213 | erp->refers = cqr; | |
8e09f215 SW |
2214 | erp->startdev = device; |
2215 | erp->memdev = device; | |
2216 | erp->block = cqr->block; | |
1da177e4 LT |
2217 | erp->magic = cqr->magic; |
2218 | erp->expires = 0; | |
2219 | erp->retries = 256; | |
2220 | erp->buildclk = get_clock(); | |
2221 | ||
2222 | erp->status = DASD_CQR_FILLED; | |
2223 | ||
2224 | return erp; | |
2225 | } | |
2226 | ||
2227 | /* | |
138c014d HH |
2228 | * DASD_3990_ERP_ADDITIONAL_ERP |
2229 | * | |
1da177e4 LT |
2230 | * DESCRIPTION |
2231 | * An additional ERP is needed to handle the current error. | |
2232 | * Add ERP to the head of the ERP-chain containing the ERP processing | |
2233 | * determined based on the sense data. | |
2234 | * | |
2235 | * PARAMETER | |
138c014d | 2236 | * cqr head of the current ERP-chain (or single cqr if |
1da177e4 LT |
2237 | * first error) |
2238 | * | |
2239 | * RETURN VALUES | |
2240 | * erp pointer to new ERP-chain head | |
2241 | */ | |
2242 | static struct dasd_ccw_req * | |
2243 | dasd_3990_erp_additional_erp(struct dasd_ccw_req * cqr) | |
2244 | { | |
2245 | ||
2246 | struct dasd_ccw_req *erp = NULL; | |
2247 | ||
2248 | /* add erp and initialize with default TIC */ | |
2249 | erp = dasd_3990_erp_add_erp(cqr); | |
2250 | ||
2251 | /* inspect sense, determine specific ERP if possible */ | |
2252 | if (erp != cqr) { | |
2253 | ||
2254 | erp = dasd_3990_erp_inspect(erp); | |
2255 | } | |
2256 | ||
2257 | return erp; | |
2258 | ||
2259 | } /* end dasd_3990_erp_additional_erp */ | |
2260 | ||
2261 | /* | |
2262 | * DASD_3990_ERP_ERROR_MATCH | |
2263 | * | |
2264 | * DESCRIPTION | |
2265 | * Check if the device status of the given cqr is the same. | |
2266 | * This means that the failed CCW and the relevant sense data | |
2267 | * must match. | |
2268 | * I don't distinguish between 24 and 32 byte sense because in case of | |
2269 | * 24 byte sense byte 25 and 27 is set as well. | |
2270 | * | |
2271 | * PARAMETER | |
138c014d | 2272 | * cqr1 first cqr, which will be compared with the |
1da177e4 LT |
2273 | * cqr2 second cqr. |
2274 | * | |
2275 | * RETURN VALUES | |
2276 | * match 'boolean' for match found | |
2277 | * returns 1 if match found, otherwise 0. | |
2278 | */ | |
2279 | static int | |
2280 | dasd_3990_erp_error_match(struct dasd_ccw_req *cqr1, struct dasd_ccw_req *cqr2) | |
2281 | { | |
2282 | ||
2283 | /* check failed CCW */ | |
2284 | if (cqr1->irb.scsw.cpa != cqr2->irb.scsw.cpa) { | |
2285 | // return 0; /* CCW doesn't match */ | |
2286 | } | |
2287 | ||
2288 | /* check sense data; byte 0-2,25,27 */ | |
2289 | if (!((memcmp (cqr1->irb.ecw, cqr2->irb.ecw, 3) == 0) && | |
2290 | (cqr1->irb.ecw[27] == cqr2->irb.ecw[27]) && | |
2291 | (cqr1->irb.ecw[25] == cqr2->irb.ecw[25]))) { | |
2292 | ||
2293 | return 0; /* sense doesn't match */ | |
2294 | } | |
2295 | ||
2296 | return 1; /* match */ | |
2297 | ||
2298 | } /* end dasd_3990_erp_error_match */ | |
2299 | ||
2300 | /* | |
2301 | * DASD_3990_ERP_IN_ERP | |
2302 | * | |
2303 | * DESCRIPTION | |
2304 | * check if the current error already happened before. | |
2305 | * quick exit if current cqr is not an ERP (cqr->refers=NULL) | |
2306 | * | |
2307 | * PARAMETER | |
2308 | * cqr failed cqr (either original cqr or already an erp) | |
2309 | * | |
2310 | * RETURN VALUES | |
138c014d | 2311 | * erp erp-pointer to the already defined error |
1da177e4 LT |
2312 | * recovery procedure OR |
2313 | * NULL if a 'new' error occurred. | |
2314 | */ | |
2315 | static struct dasd_ccw_req * | |
2316 | dasd_3990_erp_in_erp(struct dasd_ccw_req *cqr) | |
2317 | { | |
2318 | ||
2319 | struct dasd_ccw_req *erp_head = cqr, /* save erp chain head */ | |
2320 | *erp_match = NULL; /* save erp chain head */ | |
2321 | int match = 0; /* 'boolean' for matching error found */ | |
2322 | ||
2323 | if (cqr->refers == NULL) { /* return if not in erp */ | |
2324 | return NULL; | |
2325 | } | |
2326 | ||
2327 | /* check the erp/cqr chain for current error */ | |
2328 | do { | |
2329 | match = dasd_3990_erp_error_match(erp_head, cqr->refers); | |
2330 | erp_match = cqr; /* save possible matching erp */ | |
2331 | cqr = cqr->refers; /* check next erp/cqr in queue */ | |
2332 | ||
2333 | } while ((cqr->refers != NULL) && (!match)); | |
2334 | ||
2335 | if (!match) { | |
2336 | return NULL; /* no match was found */ | |
2337 | } | |
2338 | ||
2339 | return erp_match; /* return address of matching erp */ | |
2340 | ||
2341 | } /* END dasd_3990_erp_in_erp */ | |
2342 | ||
2343 | /* | |
2344 | * DASD_3990_ERP_FURTHER_ERP (24 & 32 byte sense) | |
2345 | * | |
2346 | * DESCRIPTION | |
138c014d | 2347 | * No retry is left for the current ERP. Check what has to be done |
1da177e4 LT |
2348 | * with the ERP. |
2349 | * - do further defined ERP action or | |
138c014d | 2350 | * - wait for interrupt or |
1da177e4 LT |
2351 | * - exit with permanent error |
2352 | * | |
2353 | * PARAMETER | |
2354 | * erp ERP which is in progress with no retry left | |
2355 | * | |
2356 | * RETURN VALUES | |
2357 | * erp modified/additional ERP | |
2358 | */ | |
2359 | static struct dasd_ccw_req * | |
2360 | dasd_3990_erp_further_erp(struct dasd_ccw_req *erp) | |
2361 | { | |
2362 | ||
8e09f215 | 2363 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
2364 | char *sense = erp->irb.ecw; |
2365 | ||
2366 | /* check for 24 byte sense ERP */ | |
2367 | if ((erp->function == dasd_3990_erp_bus_out) || | |
2368 | (erp->function == dasd_3990_erp_action_1) || | |
2369 | (erp->function == dasd_3990_erp_action_4)) { | |
2370 | ||
2371 | erp = dasd_3990_erp_action_1(erp); | |
2372 | ||
2373 | } else if (erp->function == dasd_3990_erp_action_5) { | |
2374 | ||
2375 | /* retries have not been successful */ | |
2376 | /* prepare erp for retry on different channel path */ | |
2377 | erp = dasd_3990_erp_action_1(erp); | |
2378 | ||
2379 | if (!(sense[2] & DASD_SENSE_BIT_0)) { | |
2380 | ||
138c014d | 2381 | /* issue a Diagnostic Control command with an |
1da177e4 LT |
2382 | * Inhibit Write subcommand */ |
2383 | ||
2384 | switch (sense[25]) { | |
2385 | case 0x17: | |
2386 | case 0x57:{ /* controller */ | |
2387 | erp = dasd_3990_erp_DCTL(erp, 0x20); | |
2388 | break; | |
2389 | } | |
2390 | case 0x18: | |
2391 | case 0x58:{ /* channel path */ | |
2392 | erp = dasd_3990_erp_DCTL(erp, 0x40); | |
2393 | break; | |
2394 | } | |
2395 | case 0x19: | |
2396 | case 0x59:{ /* storage director */ | |
2397 | erp = dasd_3990_erp_DCTL(erp, 0x80); | |
2398 | break; | |
2399 | } | |
2400 | default: | |
2401 | DEV_MESSAGE(KERN_DEBUG, device, | |
2402 | "invalid subcommand modifier 0x%x " | |
2403 | "for Diagnostic Control Command", | |
2404 | sense[25]); | |
2405 | } | |
2406 | } | |
2407 | ||
2408 | /* check for 32 byte sense ERP */ | |
2409 | } else if ((erp->function == dasd_3990_erp_compound_retry) || | |
2410 | (erp->function == dasd_3990_erp_compound_path) || | |
2411 | (erp->function == dasd_3990_erp_compound_code) || | |
2412 | (erp->function == dasd_3990_erp_compound_config)) { | |
2413 | ||
2414 | erp = dasd_3990_erp_compound(erp, sense); | |
2415 | ||
2416 | } else { | |
2417 | /* No retry left and no additional special handling */ | |
2418 | /*necessary */ | |
2419 | DEV_MESSAGE(KERN_ERR, device, | |
2420 | "no retries left for erp %p - " | |
2421 | "set status to FAILED", erp); | |
2422 | ||
2423 | erp->status = DASD_CQR_FAILED; | |
2424 | } | |
2425 | ||
2426 | return erp; | |
2427 | ||
2428 | } /* end dasd_3990_erp_further_erp */ | |
2429 | ||
2430 | /* | |
138c014d | 2431 | * DASD_3990_ERP_HANDLE_MATCH_ERP |
1da177e4 LT |
2432 | * |
2433 | * DESCRIPTION | |
2434 | * An error occurred again and an ERP has been detected which is already | |
138c014d | 2435 | * used to handle this error (e.g. retries). |
1da177e4 LT |
2436 | * All prior ERP's are asumed to be successful and therefore removed |
2437 | * from queue. | |
138c014d | 2438 | * If retry counter of matching erp is already 0, it is checked if further |
1da177e4 LT |
2439 | * action is needed (besides retry) or if the ERP has failed. |
2440 | * | |
2441 | * PARAMETER | |
2442 | * erp_head first ERP in ERP-chain | |
2443 | * erp ERP that handles the actual error. | |
2444 | * (matching erp) | |
2445 | * | |
2446 | * RETURN VALUES | |
2447 | * erp modified/additional ERP | |
2448 | */ | |
2449 | static struct dasd_ccw_req * | |
2450 | dasd_3990_erp_handle_match_erp(struct dasd_ccw_req *erp_head, | |
2451 | struct dasd_ccw_req *erp) | |
2452 | { | |
2453 | ||
8e09f215 | 2454 | struct dasd_device *device = erp_head->startdev; |
1da177e4 LT |
2455 | struct dasd_ccw_req *erp_done = erp_head; /* finished req */ |
2456 | struct dasd_ccw_req *erp_free = NULL; /* req to be freed */ | |
2457 | ||
2458 | /* loop over successful ERPs and remove them from chanq */ | |
2459 | while (erp_done != erp) { | |
2460 | ||
2461 | if (erp_done == NULL) /* end of chain reached */ | |
2462 | panic(PRINTK_HEADER "Programming error in ERP! The " | |
2463 | "original request was lost\n"); | |
2464 | ||
2465 | /* remove the request from the device queue */ | |
8e09f215 | 2466 | list_del(&erp_done->blocklist); |
1da177e4 LT |
2467 | |
2468 | erp_free = erp_done; | |
2469 | erp_done = erp_done->refers; | |
2470 | ||
2471 | /* free the finished erp request */ | |
8e09f215 | 2472 | dasd_free_erp_request(erp_free, erp_free->memdev); |
1da177e4 LT |
2473 | |
2474 | } /* end while */ | |
2475 | ||
2476 | if (erp->retries > 0) { | |
2477 | ||
2478 | char *sense = erp->refers->irb.ecw; | |
2479 | ||
2480 | /* check for special retries */ | |
2481 | if (erp->function == dasd_3990_erp_action_4) { | |
2482 | ||
2483 | erp = dasd_3990_erp_action_4(erp, sense); | |
2484 | ||
2485 | } else if (erp->function == dasd_3990_erp_action_1B_32) { | |
2486 | ||
2487 | erp = dasd_3990_update_1B(erp, sense); | |
2488 | ||
2489 | } else if (erp->function == dasd_3990_erp_int_req) { | |
2490 | ||
2491 | erp = dasd_3990_erp_int_req(erp); | |
2492 | ||
2493 | } else { | |
2494 | /* simple retry */ | |
2495 | DEV_MESSAGE(KERN_DEBUG, device, | |
2496 | "%i retries left for erp %p", | |
2497 | erp->retries, erp); | |
2498 | ||
2499 | /* handle the request again... */ | |
8e09f215 | 2500 | erp->status = DASD_CQR_FILLED; |
1da177e4 LT |
2501 | } |
2502 | ||
2503 | } else { | |
2504 | /* no retry left - check for further necessary action */ | |
2505 | /* if no further actions, handle rest as permanent error */ | |
2506 | erp = dasd_3990_erp_further_erp(erp); | |
2507 | } | |
2508 | ||
2509 | return erp; | |
2510 | ||
2511 | } /* end dasd_3990_erp_handle_match_erp */ | |
2512 | ||
2513 | /* | |
2514 | * DASD_3990_ERP_ACTION | |
2515 | * | |
2516 | * DESCRIPTION | |
5d67d164 | 2517 | * control routine for 3990 erp actions. |
1da177e4 LT |
2518 | * Has to be called with the queue lock (namely the s390_irq_lock) acquired. |
2519 | * | |
2520 | * PARAMETER | |
2521 | * cqr failed cqr (either original cqr or already an erp) | |
2522 | * | |
2523 | * RETURN VALUES | |
2524 | * erp erp-pointer to the head of the ERP action chain. | |
2525 | * This means: | |
2526 | * - either a ptr to an additional ERP cqr or | |
138c014d | 2527 | * - the original given cqr (which's status might |
1da177e4 LT |
2528 | * be modified) |
2529 | */ | |
2530 | struct dasd_ccw_req * | |
2531 | dasd_3990_erp_action(struct dasd_ccw_req * cqr) | |
2532 | { | |
1da177e4 | 2533 | struct dasd_ccw_req *erp = NULL; |
8e09f215 | 2534 | struct dasd_device *device = cqr->startdev; |
9575bf26 | 2535 | struct dasd_ccw_req *temp_erp = NULL; |
1da177e4 | 2536 | |
9575bf26 HH |
2537 | if (device->features & DASD_FEATURE_ERPLOG) { |
2538 | /* print current erp_chain */ | |
2539 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
2540 | "ERP chain at BEGINNING of ERP-ACTION"); | |
1da177e4 LT |
2541 | for (temp_erp = cqr; |
2542 | temp_erp != NULL; temp_erp = temp_erp->refers) { | |
2543 | ||
2544 | DEV_MESSAGE(KERN_ERR, device, | |
2545 | " erp %p (%02x) refers to %p", | |
2546 | temp_erp, temp_erp->status, | |
2547 | temp_erp->refers); | |
2548 | } | |
2549 | } | |
1da177e4 LT |
2550 | |
2551 | /* double-check if current erp/cqr was successfull */ | |
2552 | if ((cqr->irb.scsw.cstat == 0x00) && | |
2553 | (cqr->irb.scsw.dstat == (DEV_STAT_CHN_END|DEV_STAT_DEV_END))) { | |
2554 | ||
2555 | DEV_MESSAGE(KERN_DEBUG, device, | |
2556 | "ERP called for successful request %p" | |
2557 | " - NO ERP necessary", cqr); | |
2558 | ||
2559 | cqr->status = DASD_CQR_DONE; | |
2560 | ||
2561 | return cqr; | |
2562 | } | |
2563 | /* check if sense data are available */ | |
2564 | if (!cqr->irb.ecw) { | |
2565 | DEV_MESSAGE(KERN_DEBUG, device, | |
2566 | "ERP called witout sense data avail ..." | |
2567 | "request %p - NO ERP possible", cqr); | |
2568 | ||
2569 | cqr->status = DASD_CQR_FAILED; | |
2570 | ||
2571 | return cqr; | |
2572 | ||
2573 | } | |
2574 | ||
2575 | /* check if error happened before */ | |
2576 | erp = dasd_3990_erp_in_erp(cqr); | |
2577 | ||
2578 | if (erp == NULL) { | |
2579 | /* no matching erp found - set up erp */ | |
2580 | erp = dasd_3990_erp_additional_erp(cqr); | |
2581 | } else { | |
2582 | /* matching erp found - set all leading erp's to DONE */ | |
2583 | erp = dasd_3990_erp_handle_match_erp(cqr, erp); | |
2584 | } | |
2585 | ||
9575bf26 HH |
2586 | if (device->features & DASD_FEATURE_ERPLOG) { |
2587 | /* print current erp_chain */ | |
2588 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
2589 | "ERP chain at END of ERP-ACTION"); | |
1da177e4 LT |
2590 | for (temp_erp = erp; |
2591 | temp_erp != NULL; temp_erp = temp_erp->refers) { | |
2592 | ||
2593 | DEV_MESSAGE(KERN_ERR, device, | |
2594 | " erp %p (%02x) refers to %p", | |
2595 | temp_erp, temp_erp->status, | |
2596 | temp_erp->refers); | |
2597 | } | |
2598 | } | |
1da177e4 | 2599 | |
8e09f215 SW |
2600 | /* enqueue ERP request if it's a new one */ |
2601 | if (list_empty(&erp->blocklist)) { | |
2602 | cqr->status = DASD_CQR_IN_ERP; | |
2603 | /* add erp request before the cqr */ | |
2604 | list_add_tail(&erp->blocklist, &cqr->blocklist); | |
1da177e4 LT |
2605 | } |
2606 | ||
2607 | return erp; | |
2608 | ||
2609 | } /* end dasd_3990_erp_action */ |