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; | |
6c5f57c7 | 167 | erp->retries = 10; |
1da177e4 LT |
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 { | |
6c5f57c7 | 304 | if (sense && (sense[25] == 0x1D)) { /* state change pending */ |
1da177e4 | 305 | |
138c014d | 306 | DEV_MESSAGE(KERN_INFO, device, |
1da177e4 LT |
307 | "waiting for state change pending " |
308 | "interrupt, %d retries left", | |
309 | erp->retries); | |
138c014d | 310 | |
1da177e4 LT |
311 | dasd_3990_erp_block_queue(erp, 30*HZ); |
312 | ||
6c5f57c7 | 313 | } else if (sense && (sense[25] == 0x1E)) { /* busy */ |
1da177e4 LT |
314 | DEV_MESSAGE(KERN_INFO, device, |
315 | "busy - redriving request later, " | |
316 | "%d retries left", | |
317 | erp->retries); | |
318 | dasd_3990_erp_block_queue(erp, HZ); | |
319 | } else { | |
320 | ||
321 | /* no state change pending - retry */ | |
138c014d | 322 | DEV_MESSAGE (KERN_INFO, device, |
1da177e4 | 323 | "redriving request immediately, " |
138c014d | 324 | "%d retries left", |
1da177e4 | 325 | erp->retries); |
8e09f215 | 326 | erp->status = DASD_CQR_FILLED; |
1da177e4 LT |
327 | } |
328 | } | |
329 | ||
330 | return erp; | |
331 | ||
332 | } /* end dasd_3990_erp_action_4 */ | |
333 | ||
334 | /* | |
138c014d | 335 | ***************************************************************************** |
1da177e4 | 336 | * 24 byte sense ERP functions (only) |
138c014d | 337 | ***************************************************************************** |
1da177e4 LT |
338 | */ |
339 | ||
340 | /* | |
138c014d | 341 | * DASD_3990_ERP_ACTION_5 |
1da177e4 LT |
342 | * |
343 | * DESCRIPTION | |
344 | * Setup ERP to do the ERP action 5 (see Reference manual). | |
345 | * NOTE: Further handling is done in xxx_further_erp after the retries. | |
346 | * | |
347 | * PARAMETER | |
348 | * erp pointer to the current ERP | |
349 | * | |
350 | * RETURN VALUES | |
351 | * erp pointer to the ERP | |
352 | * | |
353 | */ | |
354 | static struct dasd_ccw_req * | |
355 | dasd_3990_erp_action_5(struct dasd_ccw_req * erp) | |
356 | { | |
357 | ||
358 | /* first of all retry */ | |
359 | erp->retries = 10; | |
360 | erp->function = dasd_3990_erp_action_5; | |
361 | ||
362 | return erp; | |
363 | ||
364 | } /* end dasd_3990_erp_action_5 */ | |
365 | ||
366 | /* | |
367 | * DASD_3990_HANDLE_ENV_DATA | |
368 | * | |
369 | * DESCRIPTION | |
370 | * Handles 24 byte 'Environmental data present'. | |
371 | * Does a analysis of the sense data (message Format) | |
372 | * and prints the error messages. | |
373 | * | |
374 | * PARAMETER | |
375 | * sense current sense data | |
138c014d | 376 | * |
1da177e4 LT |
377 | * RETURN VALUES |
378 | * void | |
379 | */ | |
380 | static void | |
381 | dasd_3990_handle_env_data(struct dasd_ccw_req * erp, char *sense) | |
382 | { | |
383 | ||
8e09f215 | 384 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
385 | char msg_format = (sense[7] & 0xF0); |
386 | char msg_no = (sense[7] & 0x0F); | |
387 | ||
388 | switch (msg_format) { | |
389 | case 0x00: /* Format 0 - Program or System Checks */ | |
390 | ||
391 | if (sense[1] & 0x10) { /* check message to operator bit */ | |
392 | ||
393 | switch (msg_no) { | |
394 | case 0x00: /* No Message */ | |
395 | break; | |
396 | case 0x01: | |
397 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
398 | "FORMAT 0 - Invalid Command"); | |
399 | break; | |
400 | case 0x02: | |
401 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
402 | "FORMAT 0 - Invalid Command " | |
403 | "Sequence"); | |
404 | break; | |
405 | case 0x03: | |
406 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
407 | "FORMAT 0 - CCW Count less than " | |
408 | "required"); | |
409 | break; | |
410 | case 0x04: | |
411 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
412 | "FORMAT 0 - Invalid Parameter"); | |
413 | break; | |
414 | case 0x05: | |
415 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
416 | "FORMAT 0 - Diagnostic of Sepecial" | |
417 | " Command Violates File Mask"); | |
418 | break; | |
419 | case 0x07: | |
420 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
421 | "FORMAT 0 - Channel Returned with " | |
422 | "Incorrect retry CCW"); | |
423 | break; | |
424 | case 0x08: | |
425 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
426 | "FORMAT 0 - Reset Notification"); | |
427 | break; | |
428 | case 0x09: | |
429 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
430 | "FORMAT 0 - Storage Path Restart"); | |
431 | break; | |
432 | case 0x0A: | |
433 | DEV_MESSAGE(KERN_WARNING, device, | |
434 | "FORMAT 0 - Channel requested " | |
435 | "... %02x", sense[8]); | |
436 | break; | |
437 | case 0x0B: | |
438 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
439 | "FORMAT 0 - Invalid Defective/" | |
440 | "Alternate Track Pointer"); | |
441 | break; | |
442 | case 0x0C: | |
443 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
444 | "FORMAT 0 - DPS Installation " | |
445 | "Check"); | |
446 | break; | |
447 | case 0x0E: | |
448 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
449 | "FORMAT 0 - Command Invalid on " | |
450 | "Secondary Address"); | |
451 | break; | |
452 | case 0x0F: | |
453 | DEV_MESSAGE(KERN_WARNING, device, | |
454 | "FORMAT 0 - Status Not As " | |
455 | "Required: reason %02x", sense[8]); | |
456 | break; | |
457 | default: | |
458 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
459 | "FORMAT 0 - Reseved"); | |
460 | } | |
461 | } else { | |
462 | switch (msg_no) { | |
463 | case 0x00: /* No Message */ | |
464 | break; | |
465 | case 0x01: | |
466 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
467 | "FORMAT 0 - Device Error Source"); | |
468 | break; | |
469 | case 0x02: | |
470 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
471 | "FORMAT 0 - Reserved"); | |
472 | break; | |
473 | case 0x03: | |
474 | DEV_MESSAGE(KERN_WARNING, device, | |
475 | "FORMAT 0 - Device Fenced - " | |
476 | "device = %02x", sense[4]); | |
477 | break; | |
478 | case 0x04: | |
479 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
480 | "FORMAT 0 - Data Pinned for " | |
481 | "Device"); | |
482 | break; | |
483 | default: | |
484 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
485 | "FORMAT 0 - Reserved"); | |
486 | } | |
487 | } | |
488 | break; | |
489 | ||
490 | case 0x10: /* Format 1 - Device Equipment Checks */ | |
491 | switch (msg_no) { | |
492 | case 0x00: /* No Message */ | |
493 | break; | |
494 | case 0x01: | |
495 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
496 | "FORMAT 1 - Device Status 1 not as " | |
497 | "expected"); | |
498 | break; | |
499 | case 0x03: | |
500 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
501 | "FORMAT 1 - Index missing"); | |
502 | break; | |
503 | case 0x04: | |
504 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
505 | "FORMAT 1 - Interruption cannot be reset"); | |
506 | break; | |
507 | case 0x05: | |
508 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
509 | "FORMAT 1 - Device did not respond to " | |
510 | "selection"); | |
511 | break; | |
512 | case 0x06: | |
513 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
514 | "FORMAT 1 - Device check-2 error or Set " | |
515 | "Sector is not complete"); | |
516 | break; | |
517 | case 0x07: | |
518 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
519 | "FORMAT 1 - Head address does not " | |
520 | "compare"); | |
521 | break; | |
522 | case 0x08: | |
523 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
524 | "FORMAT 1 - Device status 1 not valid"); | |
525 | break; | |
526 | case 0x09: | |
527 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
528 | "FORMAT 1 - Device not ready"); | |
529 | break; | |
530 | case 0x0A: | |
531 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
532 | "FORMAT 1 - Track physical address did " | |
533 | "not compare"); | |
534 | break; | |
535 | case 0x0B: | |
536 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
537 | "FORMAT 1 - Missing device address bit"); | |
538 | break; | |
539 | case 0x0C: | |
540 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
541 | "FORMAT 1 - Drive motor switch is off"); | |
542 | break; | |
543 | case 0x0D: | |
544 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
545 | "FORMAT 1 - Seek incomplete"); | |
546 | break; | |
547 | case 0x0E: | |
548 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
549 | "FORMAT 1 - Cylinder address did not " | |
550 | "compare"); | |
551 | break; | |
552 | case 0x0F: | |
553 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
554 | "FORMAT 1 - Offset active cannot be " | |
555 | "reset"); | |
556 | break; | |
557 | default: | |
558 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
559 | "FORMAT 1 - Reserved"); | |
560 | } | |
561 | break; | |
562 | ||
563 | case 0x20: /* Format 2 - 3990 Equipment Checks */ | |
564 | switch (msg_no) { | |
565 | case 0x08: | |
566 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
567 | "FORMAT 2 - 3990 check-2 error"); | |
568 | break; | |
569 | case 0x0E: | |
570 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
571 | "FORMAT 2 - Support facility errors"); | |
572 | break; | |
573 | case 0x0F: | |
574 | DEV_MESSAGE(KERN_WARNING, device, | |
575 | "FORMAT 2 - Microcode detected error %02x", | |
576 | sense[8]); | |
577 | break; | |
578 | default: | |
579 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
580 | "FORMAT 2 - Reserved"); | |
581 | } | |
582 | break; | |
583 | ||
584 | case 0x30: /* Format 3 - 3990 Control Checks */ | |
585 | switch (msg_no) { | |
586 | case 0x0F: | |
587 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
588 | "FORMAT 3 - Allegiance terminated"); | |
589 | break; | |
590 | default: | |
591 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
592 | "FORMAT 3 - Reserved"); | |
593 | } | |
594 | break; | |
595 | ||
596 | case 0x40: /* Format 4 - Data Checks */ | |
597 | switch (msg_no) { | |
598 | case 0x00: | |
599 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
600 | "FORMAT 4 - Home address area error"); | |
601 | break; | |
602 | case 0x01: | |
603 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
604 | "FORMAT 4 - Count area error"); | |
605 | break; | |
606 | case 0x02: | |
607 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
608 | "FORMAT 4 - Key area error"); | |
609 | break; | |
610 | case 0x03: | |
611 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
612 | "FORMAT 4 - Data area error"); | |
613 | break; | |
614 | case 0x04: | |
615 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
616 | "FORMAT 4 - No sync byte in home address " | |
617 | "area"); | |
618 | break; | |
619 | case 0x05: | |
620 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
621 | "FORMAT 4 - No sync byte in count address " | |
622 | "area"); | |
623 | break; | |
624 | case 0x06: | |
625 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
626 | "FORMAT 4 - No sync byte in key area"); | |
627 | break; | |
628 | case 0x07: | |
629 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
630 | "FORMAT 4 - No sync byte in data area"); | |
631 | break; | |
632 | case 0x08: | |
633 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
634 | "FORMAT 4 - Home address area error; " | |
635 | "offset active"); | |
636 | break; | |
637 | case 0x09: | |
638 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
639 | "FORMAT 4 - Count area error; offset " | |
640 | "active"); | |
641 | break; | |
642 | case 0x0A: | |
643 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
644 | "FORMAT 4 - Key area error; offset " | |
645 | "active"); | |
646 | break; | |
647 | case 0x0B: | |
648 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
649 | "FORMAT 4 - Data area error; " | |
650 | "offset active"); | |
651 | break; | |
652 | case 0x0C: | |
653 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
654 | "FORMAT 4 - No sync byte in home " | |
655 | "address area; offset active"); | |
656 | break; | |
657 | case 0x0D: | |
658 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
659 | "FORMAT 4 - No syn byte in count " | |
660 | "address area; offset active"); | |
661 | break; | |
662 | case 0x0E: | |
663 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
664 | "FORMAT 4 - No sync byte in key area; " | |
665 | "offset active"); | |
666 | break; | |
667 | case 0x0F: | |
668 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
669 | "FORMAT 4 - No syn byte in data area; " | |
670 | "offset active"); | |
671 | break; | |
672 | default: | |
673 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
674 | "FORMAT 4 - Reserved"); | |
675 | } | |
676 | break; | |
677 | ||
678 | case 0x50: /* Format 5 - Data Check with displacement information */ | |
679 | switch (msg_no) { | |
680 | case 0x00: | |
681 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
682 | "FORMAT 5 - Data Check in the " | |
683 | "home address area"); | |
684 | break; | |
685 | case 0x01: | |
686 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
687 | "FORMAT 5 - Data Check in the count area"); | |
688 | break; | |
689 | case 0x02: | |
690 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
691 | "FORMAT 5 - Data Check in the key area"); | |
692 | break; | |
693 | case 0x03: | |
694 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
695 | "FORMAT 5 - Data Check in the data area"); | |
696 | break; | |
697 | case 0x08: | |
698 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
699 | "FORMAT 5 - Data Check in the " | |
700 | "home address area; offset active"); | |
701 | break; | |
702 | case 0x09: | |
703 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
704 | "FORMAT 5 - Data Check in the count area; " | |
705 | "offset active"); | |
706 | break; | |
707 | case 0x0A: | |
708 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
709 | "FORMAT 5 - Data Check in the key area; " | |
710 | "offset active"); | |
711 | break; | |
712 | case 0x0B: | |
713 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
714 | "FORMAT 5 - Data Check in the data area; " | |
715 | "offset active"); | |
716 | break; | |
717 | default: | |
718 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
719 | "FORMAT 5 - Reserved"); | |
720 | } | |
721 | break; | |
722 | ||
723 | case 0x60: /* Format 6 - Usage Statistics/Overrun Errors */ | |
724 | switch (msg_no) { | |
725 | case 0x00: | |
726 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
727 | "FORMAT 6 - Overrun on channel A"); | |
728 | break; | |
729 | case 0x01: | |
730 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
731 | "FORMAT 6 - Overrun on channel B"); | |
732 | break; | |
733 | case 0x02: | |
734 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
735 | "FORMAT 6 - Overrun on channel C"); | |
736 | break; | |
737 | case 0x03: | |
738 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
739 | "FORMAT 6 - Overrun on channel D"); | |
740 | break; | |
741 | case 0x04: | |
742 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
743 | "FORMAT 6 - Overrun on channel E"); | |
744 | break; | |
745 | case 0x05: | |
746 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
747 | "FORMAT 6 - Overrun on channel F"); | |
748 | break; | |
749 | case 0x06: | |
750 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
751 | "FORMAT 6 - Overrun on channel G"); | |
752 | break; | |
753 | case 0x07: | |
754 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
755 | "FORMAT 6 - Overrun on channel H"); | |
756 | break; | |
757 | default: | |
758 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
759 | "FORMAT 6 - Reserved"); | |
760 | } | |
761 | break; | |
762 | ||
763 | case 0x70: /* Format 7 - Device Connection Control Checks */ | |
764 | switch (msg_no) { | |
765 | case 0x00: | |
766 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
767 | "FORMAT 7 - RCC initiated by a connection " | |
768 | "check alert"); | |
769 | break; | |
770 | case 0x01: | |
771 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
772 | "FORMAT 7 - RCC 1 sequence not " | |
773 | "successful"); | |
774 | break; | |
775 | case 0x02: | |
776 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
777 | "FORMAT 7 - RCC 1 and RCC 2 sequences not " | |
778 | "successful"); | |
779 | break; | |
780 | case 0x03: | |
781 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
782 | "FORMAT 7 - Invalid tag-in during " | |
783 | "selection sequence"); | |
784 | break; | |
785 | case 0x04: | |
786 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
787 | "FORMAT 7 - extra RCC required"); | |
788 | break; | |
789 | case 0x05: | |
790 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
791 | "FORMAT 7 - Invalid DCC selection " | |
792 | "response or timeout"); | |
793 | break; | |
794 | case 0x06: | |
795 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
796 | "FORMAT 7 - Missing end operation; device " | |
797 | "transfer complete"); | |
798 | break; | |
799 | case 0x07: | |
800 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
801 | "FORMAT 7 - Missing end operation; device " | |
802 | "transfer incomplete"); | |
803 | break; | |
804 | case 0x08: | |
805 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
806 | "FORMAT 7 - Invalid tag-in for an " | |
807 | "immediate command sequence"); | |
808 | break; | |
809 | case 0x09: | |
810 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
811 | "FORMAT 7 - Invalid tag-in for an " | |
812 | "extended command sequence"); | |
813 | break; | |
814 | case 0x0A: | |
815 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
816 | "FORMAT 7 - 3990 microcode time out when " | |
817 | "stopping selection"); | |
818 | break; | |
819 | case 0x0B: | |
820 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
821 | "FORMAT 7 - No response to selection " | |
822 | "after a poll interruption"); | |
823 | break; | |
824 | case 0x0C: | |
825 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
826 | "FORMAT 7 - Permanent path error (DASD " | |
827 | "controller not available)"); | |
828 | break; | |
829 | case 0x0D: | |
830 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
831 | "FORMAT 7 - DASD controller not available" | |
832 | " on disconnected command chain"); | |
833 | break; | |
834 | default: | |
835 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
836 | "FORMAT 7 - Reserved"); | |
837 | } | |
838 | break; | |
839 | ||
840 | case 0x80: /* Format 8 - Additional Device Equipment Checks */ | |
841 | switch (msg_no) { | |
842 | case 0x00: /* No Message */ | |
843 | case 0x01: | |
844 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
845 | "FORMAT 8 - Error correction code " | |
846 | "hardware fault"); | |
847 | break; | |
848 | case 0x03: | |
849 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
850 | "FORMAT 8 - Unexpected end operation " | |
851 | "response code"); | |
852 | break; | |
853 | case 0x04: | |
854 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
855 | "FORMAT 8 - End operation with transfer " | |
856 | "count not zero"); | |
857 | break; | |
858 | case 0x05: | |
859 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
860 | "FORMAT 8 - End operation with transfer " | |
861 | "count zero"); | |
862 | break; | |
863 | case 0x06: | |
864 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
865 | "FORMAT 8 - DPS checks after a system " | |
866 | "reset or selective reset"); | |
867 | break; | |
868 | case 0x07: | |
869 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
870 | "FORMAT 8 - DPS cannot be filled"); | |
871 | break; | |
872 | case 0x08: | |
873 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
874 | "FORMAT 8 - Short busy time-out during " | |
875 | "device selection"); | |
876 | break; | |
877 | case 0x09: | |
878 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
879 | "FORMAT 8 - DASD controller failed to " | |
880 | "set or reset the long busy latch"); | |
881 | break; | |
882 | case 0x0A: | |
883 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
884 | "FORMAT 8 - No interruption from device " | |
885 | "during a command chain"); | |
886 | break; | |
887 | default: | |
888 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
889 | "FORMAT 8 - Reserved"); | |
890 | } | |
891 | break; | |
892 | ||
893 | case 0x90: /* Format 9 - Device Read, Write, and Seek Checks */ | |
894 | switch (msg_no) { | |
895 | case 0x00: | |
896 | break; /* No Message */ | |
897 | case 0x06: | |
898 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
899 | "FORMAT 9 - Device check-2 error"); | |
900 | break; | |
901 | case 0x07: | |
902 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
903 | "FORMAT 9 - Head address did not compare"); | |
904 | break; | |
905 | case 0x0A: | |
906 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
907 | "FORMAT 9 - Track physical address did " | |
908 | "not compare while oriented"); | |
909 | break; | |
910 | case 0x0E: | |
911 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
912 | "FORMAT 9 - Cylinder address did not " | |
913 | "compare"); | |
914 | break; | |
915 | default: | |
916 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
917 | "FORMAT 9 - Reserved"); | |
918 | } | |
919 | break; | |
920 | ||
921 | case 0xF0: /* Format F - Cache Storage Checks */ | |
922 | switch (msg_no) { | |
923 | case 0x00: | |
924 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
925 | "FORMAT F - Operation Terminated"); | |
926 | break; | |
927 | case 0x01: | |
928 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
929 | "FORMAT F - Subsystem Processing Error"); | |
930 | break; | |
931 | case 0x02: | |
932 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
933 | "FORMAT F - Cache or nonvolatile storage " | |
934 | "equipment failure"); | |
935 | break; | |
936 | case 0x04: | |
937 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
938 | "FORMAT F - Caching terminated"); | |
939 | break; | |
940 | case 0x06: | |
941 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
942 | "FORMAT F - Cache fast write access not " | |
943 | "authorized"); | |
944 | break; | |
945 | case 0x07: | |
946 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
947 | "FORMAT F - Track format incorrect"); | |
948 | break; | |
949 | case 0x09: | |
950 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
951 | "FORMAT F - Caching reinitiated"); | |
952 | break; | |
953 | case 0x0A: | |
954 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
955 | "FORMAT F - Nonvolatile storage " | |
956 | "terminated"); | |
957 | break; | |
958 | case 0x0B: | |
959 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
960 | "FORMAT F - Volume is suspended duplex"); | |
20c64468 SW |
961 | /* call extended error reporting (EER) */ |
962 | dasd_eer_write(device, erp->refers, | |
963 | DASD_EER_PPRCSUSPEND); | |
1da177e4 LT |
964 | break; |
965 | case 0x0C: | |
966 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
967 | "FORMAT F - Subsystem status connot be " | |
968 | "determined"); | |
969 | break; | |
970 | case 0x0D: | |
971 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
972 | "FORMAT F - Caching status reset to " | |
973 | "default"); | |
974 | break; | |
975 | case 0x0E: | |
976 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
977 | "FORMAT F - DASD Fast Write inhibited"); | |
978 | break; | |
979 | default: | |
980 | DEV_MESSAGE(KERN_WARNING, device, "%s", | |
981 | "FORMAT D - Reserved"); | |
982 | } | |
983 | break; | |
984 | ||
985 | default: /* unknown message format - should not happen */ | |
986 | DEV_MESSAGE (KERN_WARNING, device, | |
987 | "unknown message format %02x", | |
988 | msg_format); | |
989 | break; | |
990 | } /* end switch message format */ | |
991 | ||
992 | } /* end dasd_3990_handle_env_data */ | |
993 | ||
994 | /* | |
995 | * DASD_3990_ERP_COM_REJ | |
996 | * | |
997 | * DESCRIPTION | |
998 | * Handles 24 byte 'Command Reject' error. | |
999 | * | |
1000 | * PARAMETER | |
1001 | * erp current erp_head | |
1002 | * sense current sense data | |
138c014d | 1003 | * |
1da177e4 | 1004 | * RETURN VALUES |
138c014d | 1005 | * erp 'new' erp_head - pointer to new ERP |
1da177e4 LT |
1006 | */ |
1007 | static struct dasd_ccw_req * | |
1008 | dasd_3990_erp_com_rej(struct dasd_ccw_req * erp, char *sense) | |
1009 | { | |
1010 | ||
8e09f215 | 1011 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1012 | |
1013 | erp->function = dasd_3990_erp_com_rej; | |
1014 | ||
1015 | /* env data present (ACTION 10 - retry should work) */ | |
1016 | if (sense[2] & SNS2_ENV_DATA_PRESENT) { | |
1017 | ||
1018 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1019 | "Command Reject - environmental data present"); | |
1020 | ||
1021 | dasd_3990_handle_env_data(erp, sense); | |
1022 | ||
1023 | erp->retries = 5; | |
1024 | ||
1025 | } else { | |
1026 | /* fatal error - set status to FAILED */ | |
1027 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
1028 | "Command Reject - Fatal error"); | |
1029 | ||
1030 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
1031 | } | |
1032 | ||
1033 | return erp; | |
1034 | ||
1035 | } /* end dasd_3990_erp_com_rej */ | |
1036 | ||
1037 | /* | |
138c014d | 1038 | * DASD_3990_ERP_BUS_OUT |
1da177e4 LT |
1039 | * |
1040 | * DESCRIPTION | |
1041 | * Handles 24 byte 'Bus Out Parity Check' error. | |
1042 | * | |
1043 | * PARAMETER | |
1044 | * erp current erp_head | |
1045 | * RETURN VALUES | |
1046 | * erp new erp_head - pointer to new ERP | |
1047 | */ | |
1048 | static struct dasd_ccw_req * | |
1049 | dasd_3990_erp_bus_out(struct dasd_ccw_req * erp) | |
1050 | { | |
1051 | ||
8e09f215 | 1052 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1053 | |
1054 | /* first time set initial retry counter and erp_function */ | |
1055 | /* and retry once without blocking queue */ | |
1056 | /* (this enables easier enqueing of the cqr) */ | |
1057 | if (erp->function != dasd_3990_erp_bus_out) { | |
1058 | erp->retries = 256; | |
1059 | erp->function = dasd_3990_erp_bus_out; | |
1060 | ||
1061 | } else { | |
1062 | ||
1063 | /* issue a message and wait for 'device ready' interrupt */ | |
1064 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1065 | "bus out parity error or BOPC requested by " | |
1066 | "channel"); | |
1067 | ||
1068 | dasd_3990_erp_block_queue(erp, 60*HZ); | |
1069 | ||
1070 | } | |
1071 | ||
1072 | return erp; | |
1073 | ||
1074 | } /* end dasd_3990_erp_bus_out */ | |
1075 | ||
1076 | /* | |
1077 | * DASD_3990_ERP_EQUIP_CHECK | |
1078 | * | |
1079 | * DESCRIPTION | |
1080 | * Handles 24 byte 'Equipment Check' error. | |
1081 | * | |
1082 | * PARAMETER | |
1083 | * erp current erp_head | |
1084 | * RETURN VALUES | |
1085 | * erp new erp_head - pointer to new ERP | |
1086 | */ | |
1087 | static struct dasd_ccw_req * | |
1088 | dasd_3990_erp_equip_check(struct dasd_ccw_req * erp, char *sense) | |
1089 | { | |
1090 | ||
8e09f215 | 1091 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1092 | |
1093 | erp->function = dasd_3990_erp_equip_check; | |
1094 | ||
1095 | if (sense[1] & SNS1_WRITE_INHIBITED) { | |
1096 | ||
1097 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1098 | "Write inhibited path encountered"); | |
1099 | ||
1100 | /* vary path offline */ | |
1101 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
1102 | "Path should be varied off-line. " | |
1103 | "This is not implemented yet \n - please report " | |
1104 | "to linux390@de.ibm.com"); | |
1105 | ||
1106 | erp = dasd_3990_erp_action_1(erp); | |
1107 | ||
1108 | } else if (sense[2] & SNS2_ENV_DATA_PRESENT) { | |
1109 | ||
1110 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1111 | "Equipment Check - " "environmental data present"); | |
1112 | ||
1113 | dasd_3990_handle_env_data(erp, sense); | |
1114 | ||
1115 | erp = dasd_3990_erp_action_4(erp, sense); | |
1116 | ||
1117 | } else if (sense[1] & SNS1_PERM_ERR) { | |
1118 | ||
1119 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1120 | "Equipment Check - retry exhausted or " | |
1121 | "undesirable"); | |
1122 | ||
1123 | erp = dasd_3990_erp_action_1(erp); | |
1124 | ||
1125 | } else { | |
1126 | /* all other equipment checks - Action 5 */ | |
1127 | /* rest is done when retries == 0 */ | |
1128 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1129 | "Equipment check or processing error"); | |
1130 | ||
1131 | erp = dasd_3990_erp_action_5(erp); | |
1132 | } | |
1da177e4 LT |
1133 | return erp; |
1134 | ||
1135 | } /* end dasd_3990_erp_equip_check */ | |
1136 | ||
1137 | /* | |
1138 | * DASD_3990_ERP_DATA_CHECK | |
1139 | * | |
1140 | * DESCRIPTION | |
1141 | * Handles 24 byte 'Data Check' error. | |
1142 | * | |
1143 | * PARAMETER | |
1144 | * erp current erp_head | |
1145 | * RETURN VALUES | |
1146 | * erp new erp_head - pointer to new ERP | |
1147 | */ | |
1148 | static struct dasd_ccw_req * | |
1149 | dasd_3990_erp_data_check(struct dasd_ccw_req * erp, char *sense) | |
1150 | { | |
1151 | ||
8e09f215 | 1152 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1153 | |
1154 | erp->function = dasd_3990_erp_data_check; | |
1155 | ||
1156 | if (sense[2] & SNS2_CORRECTABLE) { /* correctable data check */ | |
1157 | ||
1158 | /* issue message that the data has been corrected */ | |
1159 | DEV_MESSAGE(KERN_EMERG, device, "%s", | |
1160 | "Data recovered during retry with PCI " | |
1161 | "fetch mode active"); | |
1162 | ||
1163 | /* not possible to handle this situation in Linux */ | |
1164 | panic("No way to inform application about the possibly " | |
1165 | "incorrect data"); | |
1166 | ||
1167 | } else if (sense[2] & SNS2_ENV_DATA_PRESENT) { | |
1168 | ||
1169 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1170 | "Uncorrectable data check recovered secondary " | |
1171 | "addr of duplex pair"); | |
1172 | ||
1173 | erp = dasd_3990_erp_action_4(erp, sense); | |
1174 | ||
1175 | } else if (sense[1] & SNS1_PERM_ERR) { | |
1176 | ||
1177 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1178 | "Uncorrectable data check with internal " | |
1179 | "retry exhausted"); | |
1180 | ||
1181 | erp = dasd_3990_erp_action_1(erp); | |
1182 | ||
1183 | } else { | |
1184 | /* all other data checks */ | |
1185 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1186 | "Uncorrectable data check with retry count " | |
1187 | "exhausted..."); | |
1188 | ||
1189 | erp = dasd_3990_erp_action_5(erp); | |
1190 | } | |
1191 | ||
1192 | return erp; | |
1193 | ||
1194 | } /* end dasd_3990_erp_data_check */ | |
1195 | ||
1196 | /* | |
1197 | * DASD_3990_ERP_OVERRUN | |
1198 | * | |
1199 | * DESCRIPTION | |
1200 | * Handles 24 byte 'Overrun' error. | |
1201 | * | |
1202 | * PARAMETER | |
1203 | * erp current erp_head | |
1204 | * RETURN VALUES | |
1205 | * erp new erp_head - pointer to new ERP | |
1206 | */ | |
1207 | static struct dasd_ccw_req * | |
1208 | dasd_3990_erp_overrun(struct dasd_ccw_req * erp, char *sense) | |
1209 | { | |
1210 | ||
8e09f215 | 1211 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1212 | |
1213 | erp->function = dasd_3990_erp_overrun; | |
1214 | ||
1215 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1216 | "Overrun - service overrun or overrun" | |
1217 | " error requested by channel"); | |
1218 | ||
1219 | erp = dasd_3990_erp_action_5(erp); | |
1220 | ||
1221 | return erp; | |
1222 | ||
1223 | } /* end dasd_3990_erp_overrun */ | |
1224 | ||
1225 | /* | |
1226 | * DASD_3990_ERP_INV_FORMAT | |
1227 | * | |
1228 | * DESCRIPTION | |
1229 | * Handles 24 byte 'Invalid Track Format' error. | |
1230 | * | |
1231 | * PARAMETER | |
1232 | * erp current erp_head | |
1233 | * RETURN VALUES | |
1234 | * erp new erp_head - pointer to new ERP | |
1235 | */ | |
1236 | static struct dasd_ccw_req * | |
1237 | dasd_3990_erp_inv_format(struct dasd_ccw_req * erp, char *sense) | |
1238 | { | |
1239 | ||
8e09f215 | 1240 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1241 | |
1242 | erp->function = dasd_3990_erp_inv_format; | |
1243 | ||
1244 | if (sense[2] & SNS2_ENV_DATA_PRESENT) { | |
1245 | ||
1246 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1247 | "Track format error when destaging or " | |
1248 | "staging data"); | |
1249 | ||
1250 | dasd_3990_handle_env_data(erp, sense); | |
1251 | ||
1252 | erp = dasd_3990_erp_action_4(erp, sense); | |
1253 | ||
1254 | } else { | |
1255 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
8e09f215 | 1256 | "Invalid Track Format - Fatal error"); |
1da177e4 LT |
1257 | |
1258 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
1259 | } | |
1260 | ||
1261 | return erp; | |
1262 | ||
1263 | } /* end dasd_3990_erp_inv_format */ | |
1264 | ||
1265 | /* | |
1266 | * DASD_3990_ERP_EOC | |
1267 | * | |
1268 | * DESCRIPTION | |
1269 | * Handles 24 byte 'End-of-Cylinder' error. | |
1270 | * | |
1271 | * PARAMETER | |
1272 | * erp already added default erp | |
1273 | * RETURN VALUES | |
1274 | * erp pointer to original (failed) cqr. | |
1275 | */ | |
1276 | static struct dasd_ccw_req * | |
1277 | dasd_3990_erp_EOC(struct dasd_ccw_req * default_erp, char *sense) | |
1278 | { | |
1279 | ||
8e09f215 | 1280 | struct dasd_device *device = default_erp->startdev; |
1da177e4 LT |
1281 | |
1282 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
1283 | "End-of-Cylinder - must never happen"); | |
1284 | ||
1285 | /* implement action 7 - BUG */ | |
1286 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); | |
1287 | ||
1288 | } /* end dasd_3990_erp_EOC */ | |
1289 | ||
1290 | /* | |
1291 | * DASD_3990_ERP_ENV_DATA | |
1292 | * | |
1293 | * DESCRIPTION | |
1294 | * Handles 24 byte 'Environmental-Data Present' error. | |
1295 | * | |
1296 | * PARAMETER | |
1297 | * erp current erp_head | |
1298 | * RETURN VALUES | |
1299 | * erp new erp_head - pointer to new ERP | |
1300 | */ | |
1301 | static struct dasd_ccw_req * | |
1302 | dasd_3990_erp_env_data(struct dasd_ccw_req * erp, char *sense) | |
1303 | { | |
1304 | ||
8e09f215 | 1305 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1306 | |
1307 | erp->function = dasd_3990_erp_env_data; | |
1308 | ||
1309 | DEV_MESSAGE(KERN_DEBUG, device, "%s", "Environmental data present"); | |
1310 | ||
1311 | dasd_3990_handle_env_data(erp, sense); | |
1312 | ||
1313 | /* don't retry on disabled interface */ | |
1314 | if (sense[7] != 0x0F) { | |
1da177e4 LT |
1315 | erp = dasd_3990_erp_action_4(erp, sense); |
1316 | } else { | |
8e09f215 | 1317 | erp->status = DASD_CQR_FILLED; |
1da177e4 LT |
1318 | } |
1319 | ||
1320 | return erp; | |
1321 | ||
1322 | } /* end dasd_3990_erp_env_data */ | |
1323 | ||
1324 | /* | |
1325 | * DASD_3990_ERP_NO_REC | |
1326 | * | |
1327 | * DESCRIPTION | |
1328 | * Handles 24 byte 'No Record Found' error. | |
1329 | * | |
1330 | * PARAMETER | |
1331 | * erp already added default ERP | |
138c014d | 1332 | * |
1da177e4 LT |
1333 | * RETURN VALUES |
1334 | * erp new erp_head - pointer to new ERP | |
1335 | */ | |
1336 | static struct dasd_ccw_req * | |
1337 | dasd_3990_erp_no_rec(struct dasd_ccw_req * default_erp, char *sense) | |
1338 | { | |
1339 | ||
8e09f215 | 1340 | struct dasd_device *device = default_erp->startdev; |
1da177e4 LT |
1341 | |
1342 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
8e09f215 | 1343 | "No Record Found - Fatal error "); |
1da177e4 LT |
1344 | |
1345 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); | |
1346 | ||
1347 | } /* end dasd_3990_erp_no_rec */ | |
1348 | ||
1349 | /* | |
1350 | * DASD_3990_ERP_FILE_PROT | |
1351 | * | |
1352 | * DESCRIPTION | |
1353 | * Handles 24 byte 'File Protected' error. | |
1354 | * Note: Seek related recovery is not implemented because | |
1355 | * wee don't use the seek command yet. | |
1356 | * | |
1357 | * PARAMETER | |
1358 | * erp current erp_head | |
1359 | * RETURN VALUES | |
1360 | * erp new erp_head - pointer to new ERP | |
1361 | */ | |
1362 | static struct dasd_ccw_req * | |
1363 | dasd_3990_erp_file_prot(struct dasd_ccw_req * erp) | |
1364 | { | |
1365 | ||
8e09f215 | 1366 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1367 | |
1368 | DEV_MESSAGE(KERN_ERR, device, "%s", "File Protected"); | |
1369 | ||
1370 | return dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
1371 | ||
1372 | } /* end dasd_3990_erp_file_prot */ | |
1373 | ||
8e09f215 SW |
1374 | /* |
1375 | * DASD_3990_ERP_INSPECT_ALIAS | |
1376 | * | |
1377 | * DESCRIPTION | |
1378 | * Checks if the original request was started on an alias device. | |
1379 | * If yes, it modifies the original and the erp request so that | |
1380 | * the erp request can be started on a base device. | |
1381 | * | |
1382 | * PARAMETER | |
1383 | * erp pointer to the currently created default ERP | |
1384 | * | |
1385 | * RETURN VALUES | |
1386 | * erp pointer to the modified ERP, or NULL | |
1387 | */ | |
1388 | ||
1389 | static struct dasd_ccw_req *dasd_3990_erp_inspect_alias( | |
1390 | struct dasd_ccw_req *erp) | |
1391 | { | |
1392 | struct dasd_ccw_req *cqr = erp->refers; | |
1393 | ||
1394 | if (cqr->block && | |
1395 | (cqr->block->base != cqr->startdev)) { | |
1396 | if (cqr->startdev->features & DASD_FEATURE_ERPLOG) { | |
1397 | DEV_MESSAGE(KERN_ERR, cqr->startdev, | |
1398 | "ERP on alias device for request %p," | |
1399 | " recover on base device %s", cqr, | |
1400 | cqr->block->base->cdev->dev.bus_id); | |
1401 | } | |
1402 | dasd_eckd_reset_ccw_to_base_io(cqr); | |
1403 | erp->startdev = cqr->block->base; | |
1404 | erp->function = dasd_3990_erp_inspect_alias; | |
1405 | return erp; | |
1406 | } else | |
1407 | return NULL; | |
1408 | } | |
1409 | ||
1410 | ||
1da177e4 | 1411 | /* |
138c014d | 1412 | * DASD_3990_ERP_INSPECT_24 |
1da177e4 LT |
1413 | * |
1414 | * DESCRIPTION | |
1415 | * Does a detailed inspection of the 24 byte sense data | |
138c014d | 1416 | * and sets up a related error recovery action. |
1da177e4 LT |
1417 | * |
1418 | * PARAMETER | |
1419 | * sense sense data of the actual error | |
1420 | * erp pointer to the currently created default ERP | |
1421 | * | |
1422 | * RETURN VALUES | |
1423 | * erp pointer to the (addtitional) ERP | |
1424 | */ | |
1425 | static struct dasd_ccw_req * | |
1426 | dasd_3990_erp_inspect_24(struct dasd_ccw_req * erp, char *sense) | |
1427 | { | |
1428 | ||
1429 | struct dasd_ccw_req *erp_filled = NULL; | |
1430 | ||
1431 | /* Check sense for .... */ | |
1432 | /* 'Command Reject' */ | |
1433 | if ((erp_filled == NULL) && (sense[0] & SNS0_CMD_REJECT)) { | |
1434 | erp_filled = dasd_3990_erp_com_rej(erp, sense); | |
1435 | } | |
1436 | /* 'Intervention Required' */ | |
1437 | if ((erp_filled == NULL) && (sense[0] & SNS0_INTERVENTION_REQ)) { | |
1438 | erp_filled = dasd_3990_erp_int_req(erp); | |
1439 | } | |
1440 | /* 'Bus Out Parity Check' */ | |
1441 | if ((erp_filled == NULL) && (sense[0] & SNS0_BUS_OUT_CHECK)) { | |
1442 | erp_filled = dasd_3990_erp_bus_out(erp); | |
1443 | } | |
1444 | /* 'Equipment Check' */ | |
1445 | if ((erp_filled == NULL) && (sense[0] & SNS0_EQUIPMENT_CHECK)) { | |
1446 | erp_filled = dasd_3990_erp_equip_check(erp, sense); | |
1447 | } | |
1448 | /* 'Data Check' */ | |
1449 | if ((erp_filled == NULL) && (sense[0] & SNS0_DATA_CHECK)) { | |
1450 | erp_filled = dasd_3990_erp_data_check(erp, sense); | |
1451 | } | |
1452 | /* 'Overrun' */ | |
1453 | if ((erp_filled == NULL) && (sense[0] & SNS0_OVERRUN)) { | |
1454 | erp_filled = dasd_3990_erp_overrun(erp, sense); | |
1455 | } | |
1456 | /* 'Invalid Track Format' */ | |
1457 | if ((erp_filled == NULL) && (sense[1] & SNS1_INV_TRACK_FORMAT)) { | |
1458 | erp_filled = dasd_3990_erp_inv_format(erp, sense); | |
1459 | } | |
1460 | /* 'End-of-Cylinder' */ | |
1461 | if ((erp_filled == NULL) && (sense[1] & SNS1_EOC)) { | |
1462 | erp_filled = dasd_3990_erp_EOC(erp, sense); | |
1463 | } | |
1464 | /* 'Environmental Data' */ | |
1465 | if ((erp_filled == NULL) && (sense[2] & SNS2_ENV_DATA_PRESENT)) { | |
1466 | erp_filled = dasd_3990_erp_env_data(erp, sense); | |
1467 | } | |
1468 | /* 'No Record Found' */ | |
1469 | if ((erp_filled == NULL) && (sense[1] & SNS1_NO_REC_FOUND)) { | |
1470 | erp_filled = dasd_3990_erp_no_rec(erp, sense); | |
1471 | } | |
1472 | /* 'File Protected' */ | |
1473 | if ((erp_filled == NULL) && (sense[1] & SNS1_FILE_PROTECTED)) { | |
1474 | erp_filled = dasd_3990_erp_file_prot(erp); | |
1475 | } | |
1476 | /* other (unknown) error - do default ERP */ | |
1477 | if (erp_filled == NULL) { | |
1478 | ||
1479 | erp_filled = erp; | |
1480 | } | |
1481 | ||
1482 | return erp_filled; | |
1483 | ||
1484 | } /* END dasd_3990_erp_inspect_24 */ | |
1485 | ||
1486 | /* | |
138c014d | 1487 | ***************************************************************************** |
1da177e4 | 1488 | * 32 byte sense ERP functions (only) |
138c014d | 1489 | ***************************************************************************** |
1da177e4 LT |
1490 | */ |
1491 | ||
1492 | /* | |
138c014d | 1493 | * DASD_3990_ERPACTION_10_32 |
1da177e4 LT |
1494 | * |
1495 | * DESCRIPTION | |
1496 | * Handles 32 byte 'Action 10' of Single Program Action Codes. | |
1497 | * Just retry and if retry doesn't work, return with error. | |
1498 | * | |
1499 | * PARAMETER | |
1500 | * erp current erp_head | |
138c014d | 1501 | * sense current sense data |
1da177e4 LT |
1502 | * RETURN VALUES |
1503 | * erp modified erp_head | |
1504 | */ | |
1505 | static struct dasd_ccw_req * | |
1506 | dasd_3990_erp_action_10_32(struct dasd_ccw_req * erp, char *sense) | |
1507 | { | |
1508 | ||
8e09f215 | 1509 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1510 | |
1511 | erp->retries = 256; | |
1512 | erp->function = dasd_3990_erp_action_10_32; | |
1513 | ||
1514 | DEV_MESSAGE(KERN_DEBUG, device, "%s", "Perform logging requested"); | |
1515 | ||
1516 | return erp; | |
1517 | ||
1518 | } /* end dasd_3990_erp_action_10_32 */ | |
1519 | ||
1520 | /* | |
1521 | * DASD_3990_ERP_ACTION_1B_32 | |
1522 | * | |
1523 | * DESCRIPTION | |
1524 | * Handles 32 byte 'Action 1B' of Single Program Action Codes. | |
138c014d | 1525 | * A write operation could not be finished because of an unexpected |
1da177e4 | 1526 | * condition. |
138c014d HH |
1527 | * The already created 'default erp' is used to get the link to |
1528 | * the erp chain, but it can not be used for this recovery | |
1da177e4 LT |
1529 | * action because it contains no DE/LO data space. |
1530 | * | |
1531 | * PARAMETER | |
1532 | * default_erp already added default erp. | |
138c014d | 1533 | * sense current sense data |
1da177e4 LT |
1534 | * |
1535 | * RETURN VALUES | |
138c014d | 1536 | * erp new erp or |
1da177e4 LT |
1537 | * default_erp in case of imprecise ending or error |
1538 | */ | |
1539 | static struct dasd_ccw_req * | |
1540 | dasd_3990_erp_action_1B_32(struct dasd_ccw_req * default_erp, char *sense) | |
1541 | { | |
1542 | ||
8e09f215 | 1543 | struct dasd_device *device = default_erp->startdev; |
1da177e4 LT |
1544 | __u32 cpa = 0; |
1545 | struct dasd_ccw_req *cqr; | |
1546 | struct dasd_ccw_req *erp; | |
1547 | struct DE_eckd_data *DE_data; | |
8e09f215 | 1548 | struct PFX_eckd_data *PFX_data; |
1da177e4 | 1549 | char *LO_data; /* LO_eckd_data_t */ |
8e09f215 | 1550 | struct ccw1 *ccw, *oldccw; |
1da177e4 LT |
1551 | |
1552 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1553 | "Write not finished because of unexpected condition"); | |
1554 | ||
1555 | default_erp->function = dasd_3990_erp_action_1B_32; | |
1556 | ||
1557 | /* determine the original cqr */ | |
1558 | cqr = default_erp; | |
1559 | ||
1560 | while (cqr->refers != NULL) { | |
1561 | cqr = cqr->refers; | |
1562 | } | |
1563 | ||
1564 | /* for imprecise ending just do default erp */ | |
1565 | if (sense[1] & 0x01) { | |
1566 | ||
1567 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1568 | "Imprecise ending is set - just retry"); | |
1569 | ||
1570 | return default_erp; | |
1571 | } | |
1572 | ||
1573 | /* determine the address of the CCW to be restarted */ | |
1574 | /* Imprecise ending is not set -> addr from IRB-SCSW */ | |
23d805b6 | 1575 | cpa = default_erp->refers->irb.scsw.cmd.cpa; |
1da177e4 LT |
1576 | |
1577 | if (cpa == 0) { | |
1578 | ||
1579 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1580 | "Unable to determine address of the CCW " | |
1581 | "to be restarted"); | |
1582 | ||
1583 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); | |
1584 | } | |
1585 | ||
1586 | /* Build new ERP request including DE/LO */ | |
1587 | erp = dasd_alloc_erp_request((char *) &cqr->magic, | |
1588 | 2 + 1,/* DE/LO + TIC */ | |
8e09f215 SW |
1589 | sizeof(struct DE_eckd_data) + |
1590 | sizeof(struct LO_eckd_data), device); | |
1da177e4 LT |
1591 | |
1592 | if (IS_ERR(erp)) { | |
1593 | DEV_MESSAGE(KERN_ERR, device, "%s", "Unable to allocate ERP"); | |
1594 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); | |
1595 | } | |
1596 | ||
1597 | /* use original DE */ | |
1598 | DE_data = erp->data; | |
8e09f215 SW |
1599 | oldccw = cqr->cpaddr; |
1600 | if (oldccw->cmd_code == DASD_ECKD_CCW_PFX) { | |
1601 | PFX_data = cqr->data; | |
1602 | memcpy(DE_data, &PFX_data->define_extend, | |
1603 | sizeof(struct DE_eckd_data)); | |
1604 | } else | |
1605 | memcpy(DE_data, cqr->data, sizeof(struct DE_eckd_data)); | |
1da177e4 LT |
1606 | |
1607 | /* create LO */ | |
8e09f215 | 1608 | LO_data = erp->data + sizeof(struct DE_eckd_data); |
1da177e4 LT |
1609 | |
1610 | if ((sense[3] == 0x01) && (LO_data[1] & 0x01)) { | |
1611 | ||
1612 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
1613 | "BUG - this should not happen"); | |
1614 | ||
1615 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); | |
1616 | } | |
1617 | ||
1618 | if ((sense[7] & 0x3F) == 0x01) { | |
1619 | /* operation code is WRITE DATA -> data area orientation */ | |
1620 | LO_data[0] = 0x81; | |
1621 | ||
1622 | } else if ((sense[7] & 0x3F) == 0x03) { | |
1623 | /* operation code is FORMAT WRITE -> index orientation */ | |
1624 | LO_data[0] = 0xC3; | |
1625 | ||
1626 | } else { | |
1627 | LO_data[0] = sense[7]; /* operation */ | |
1628 | } | |
1629 | ||
1630 | LO_data[1] = sense[8]; /* auxiliary */ | |
1631 | LO_data[2] = sense[9]; | |
1632 | LO_data[3] = sense[3]; /* count */ | |
1633 | LO_data[4] = sense[29]; /* seek_addr.cyl */ | |
1634 | LO_data[5] = sense[30]; /* seek_addr.cyl 2nd byte */ | |
1635 | LO_data[7] = sense[31]; /* seek_addr.head 2nd byte */ | |
1636 | ||
1637 | memcpy(&(LO_data[8]), &(sense[11]), 8); | |
1638 | ||
1639 | /* create DE ccw */ | |
1640 | ccw = erp->cpaddr; | |
8e09f215 | 1641 | memset(ccw, 0, sizeof(struct ccw1)); |
1da177e4 LT |
1642 | ccw->cmd_code = DASD_ECKD_CCW_DEFINE_EXTENT; |
1643 | ccw->flags = CCW_FLAG_CC; | |
1644 | ccw->count = 16; | |
1645 | ccw->cda = (__u32)(addr_t) DE_data; | |
1646 | ||
1647 | /* create LO ccw */ | |
1648 | ccw++; | |
8e09f215 | 1649 | memset(ccw, 0, sizeof(struct ccw1)); |
1da177e4 LT |
1650 | ccw->cmd_code = DASD_ECKD_CCW_LOCATE_RECORD; |
1651 | ccw->flags = CCW_FLAG_CC; | |
1652 | ccw->count = 16; | |
1653 | ccw->cda = (__u32)(addr_t) LO_data; | |
1654 | ||
1655 | /* TIC to the failed ccw */ | |
1656 | ccw++; | |
1657 | ccw->cmd_code = CCW_CMD_TIC; | |
1658 | ccw->cda = cpa; | |
1659 | ||
1660 | /* fill erp related fields */ | |
1661 | erp->function = dasd_3990_erp_action_1B_32; | |
1662 | erp->refers = default_erp->refers; | |
8e09f215 SW |
1663 | erp->startdev = device; |
1664 | erp->memdev = device; | |
1da177e4 LT |
1665 | erp->magic = default_erp->magic; |
1666 | erp->expires = 0; | |
1667 | erp->retries = 256; | |
1668 | erp->buildclk = get_clock(); | |
1669 | erp->status = DASD_CQR_FILLED; | |
1670 | ||
1671 | /* remove the default erp */ | |
1672 | dasd_free_erp_request(default_erp, device); | |
1673 | ||
1674 | return erp; | |
1675 | ||
1676 | } /* end dasd_3990_erp_action_1B_32 */ | |
1677 | ||
1678 | /* | |
1679 | * DASD_3990_UPDATE_1B | |
1680 | * | |
1681 | * DESCRIPTION | |
138c014d | 1682 | * Handles the update to the 32 byte 'Action 1B' of Single Program |
1da177e4 LT |
1683 | * Action Codes in case the first action was not successful. |
1684 | * The already created 'previous_erp' is the currently not successful | |
138c014d | 1685 | * ERP. |
1da177e4 LT |
1686 | * |
1687 | * PARAMETER | |
1688 | * previous_erp already created previous erp. | |
138c014d | 1689 | * sense current sense data |
1da177e4 | 1690 | * RETURN VALUES |
138c014d | 1691 | * erp modified erp |
1da177e4 LT |
1692 | */ |
1693 | static struct dasd_ccw_req * | |
1694 | dasd_3990_update_1B(struct dasd_ccw_req * previous_erp, char *sense) | |
1695 | { | |
1696 | ||
8e09f215 | 1697 | struct dasd_device *device = previous_erp->startdev; |
1da177e4 LT |
1698 | __u32 cpa = 0; |
1699 | struct dasd_ccw_req *cqr; | |
1700 | struct dasd_ccw_req *erp; | |
1701 | char *LO_data; /* struct LO_eckd_data */ | |
1702 | struct ccw1 *ccw; | |
1703 | ||
1704 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1705 | "Write not finished because of unexpected condition" | |
1706 | " - follow on"); | |
1707 | ||
1708 | /* determine the original cqr */ | |
1709 | cqr = previous_erp; | |
1710 | ||
1711 | while (cqr->refers != NULL) { | |
1712 | cqr = cqr->refers; | |
1713 | } | |
1714 | ||
1715 | /* for imprecise ending just do default erp */ | |
1716 | if (sense[1] & 0x01) { | |
1717 | ||
1718 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1719 | "Imprecise ending is set - just retry"); | |
1720 | ||
8e09f215 | 1721 | previous_erp->status = DASD_CQR_FILLED; |
1da177e4 LT |
1722 | |
1723 | return previous_erp; | |
1724 | } | |
1725 | ||
1726 | /* determine the address of the CCW to be restarted */ | |
1727 | /* Imprecise ending is not set -> addr from IRB-SCSW */ | |
23d805b6 | 1728 | cpa = previous_erp->irb.scsw.cmd.cpa; |
1da177e4 LT |
1729 | |
1730 | if (cpa == 0) { | |
1731 | ||
1732 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
1733 | "Unable to determine address of the CCW " | |
1734 | "to be restarted"); | |
1735 | ||
1736 | previous_erp->status = DASD_CQR_FAILED; | |
1737 | ||
1738 | return previous_erp; | |
1739 | } | |
1740 | ||
1741 | erp = previous_erp; | |
1742 | ||
1743 | /* update the LO with the new returned sense data */ | |
8e09f215 | 1744 | LO_data = erp->data + sizeof(struct DE_eckd_data); |
1da177e4 LT |
1745 | |
1746 | if ((sense[3] == 0x01) && (LO_data[1] & 0x01)) { | |
1747 | ||
1748 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
1749 | "BUG - this should not happen"); | |
1750 | ||
1751 | previous_erp->status = DASD_CQR_FAILED; | |
1752 | ||
1753 | return previous_erp; | |
1754 | } | |
1755 | ||
1756 | if ((sense[7] & 0x3F) == 0x01) { | |
1757 | /* operation code is WRITE DATA -> data area orientation */ | |
1758 | LO_data[0] = 0x81; | |
1759 | ||
1760 | } else if ((sense[7] & 0x3F) == 0x03) { | |
1761 | /* operation code is FORMAT WRITE -> index orientation */ | |
1762 | LO_data[0] = 0xC3; | |
1763 | ||
1764 | } else { | |
1765 | LO_data[0] = sense[7]; /* operation */ | |
1766 | } | |
1767 | ||
1768 | LO_data[1] = sense[8]; /* auxiliary */ | |
1769 | LO_data[2] = sense[9]; | |
1770 | LO_data[3] = sense[3]; /* count */ | |
1771 | LO_data[4] = sense[29]; /* seek_addr.cyl */ | |
1772 | LO_data[5] = sense[30]; /* seek_addr.cyl 2nd byte */ | |
1773 | LO_data[7] = sense[31]; /* seek_addr.head 2nd byte */ | |
1774 | ||
1775 | memcpy(&(LO_data[8]), &(sense[11]), 8); | |
1776 | ||
1777 | /* TIC to the failed ccw */ | |
1778 | ccw = erp->cpaddr; /* addr of DE ccw */ | |
1779 | ccw++; /* addr of LE ccw */ | |
1780 | ccw++; /* addr of TIC ccw */ | |
1781 | ccw->cda = cpa; | |
1782 | ||
8e09f215 | 1783 | erp->status = DASD_CQR_FILLED; |
1da177e4 LT |
1784 | |
1785 | return erp; | |
1786 | ||
1787 | } /* end dasd_3990_update_1B */ | |
1788 | ||
1789 | /* | |
138c014d | 1790 | * DASD_3990_ERP_COMPOUND_RETRY |
1da177e4 LT |
1791 | * |
1792 | * DESCRIPTION | |
1793 | * Handles the compound ERP action retry code. | |
1794 | * NOTE: At least one retry is done even if zero is specified | |
1795 | * by the sense data. This makes enqueueing of the request | |
1796 | * easier. | |
1797 | * | |
1798 | * PARAMETER | |
1799 | * sense sense data of the actual error | |
1800 | * erp pointer to the currently created ERP | |
1801 | * | |
1802 | * RETURN VALUES | |
1803 | * erp modified ERP pointer | |
1804 | * | |
1805 | */ | |
1806 | static void | |
1807 | dasd_3990_erp_compound_retry(struct dasd_ccw_req * erp, char *sense) | |
1808 | { | |
1809 | ||
1810 | switch (sense[25] & 0x03) { | |
1811 | case 0x00: /* no not retry */ | |
1812 | erp->retries = 1; | |
1813 | break; | |
1814 | ||
1815 | case 0x01: /* retry 2 times */ | |
1816 | erp->retries = 2; | |
1817 | break; | |
1818 | ||
1819 | case 0x02: /* retry 10 times */ | |
1820 | erp->retries = 10; | |
1821 | break; | |
1822 | ||
1823 | case 0x03: /* retry 256 times */ | |
1824 | erp->retries = 256; | |
1825 | break; | |
1826 | ||
1827 | default: | |
1828 | BUG(); | |
1829 | } | |
1830 | ||
1831 | erp->function = dasd_3990_erp_compound_retry; | |
1832 | ||
1833 | } /* end dasd_3990_erp_compound_retry */ | |
1834 | ||
1835 | /* | |
138c014d | 1836 | * DASD_3990_ERP_COMPOUND_PATH |
1da177e4 LT |
1837 | * |
1838 | * DESCRIPTION | |
1839 | * Handles the compound ERP action for retry on alternate | |
1840 | * channel path. | |
1841 | * | |
1842 | * PARAMETER | |
1843 | * sense sense data of the actual error | |
1844 | * erp pointer to the currently created ERP | |
1845 | * | |
1846 | * RETURN VALUES | |
1847 | * erp modified ERP pointer | |
1848 | * | |
1849 | */ | |
1850 | static void | |
1851 | dasd_3990_erp_compound_path(struct dasd_ccw_req * erp, char *sense) | |
1852 | { | |
1853 | ||
1854 | if (sense[25] & DASD_SENSE_BIT_3) { | |
1855 | dasd_3990_erp_alternate_path(erp); | |
1856 | ||
1857 | if (erp->status == DASD_CQR_FAILED) { | |
138c014d | 1858 | /* reset the lpm and the status to be able to |
1da177e4 LT |
1859 | * try further actions. */ |
1860 | ||
1861 | erp->lpm = 0; | |
8e09f215 | 1862 | erp->status = DASD_CQR_NEED_ERP; |
1da177e4 LT |
1863 | } |
1864 | } | |
1865 | ||
1866 | erp->function = dasd_3990_erp_compound_path; | |
1867 | ||
1868 | } /* end dasd_3990_erp_compound_path */ | |
1869 | ||
1870 | /* | |
138c014d | 1871 | * DASD_3990_ERP_COMPOUND_CODE |
1da177e4 LT |
1872 | * |
1873 | * DESCRIPTION | |
1874 | * Handles the compound ERP action for retry code. | |
1875 | * | |
1876 | * PARAMETER | |
1877 | * sense sense data of the actual error | |
1878 | * erp pointer to the currently created ERP | |
1879 | * | |
1880 | * RETURN VALUES | |
1881 | * erp NEW ERP pointer | |
1882 | * | |
1883 | */ | |
1884 | static struct dasd_ccw_req * | |
1885 | dasd_3990_erp_compound_code(struct dasd_ccw_req * erp, char *sense) | |
1886 | { | |
1887 | ||
1888 | if (sense[25] & DASD_SENSE_BIT_2) { | |
1889 | ||
1890 | switch (sense[28]) { | |
1891 | case 0x17: | |
138c014d | 1892 | /* issue a Diagnostic Control command with an |
3a4fa0a2 | 1893 | * Inhibit Write subcommand and controller modifier */ |
1da177e4 LT |
1894 | erp = dasd_3990_erp_DCTL(erp, 0x20); |
1895 | break; | |
138c014d | 1896 | |
1da177e4 LT |
1897 | case 0x25: |
1898 | /* wait for 5 seconds and retry again */ | |
1899 | erp->retries = 1; | |
138c014d | 1900 | |
1da177e4 LT |
1901 | dasd_3990_erp_block_queue (erp, 5*HZ); |
1902 | break; | |
138c014d | 1903 | |
1da177e4 LT |
1904 | default: |
1905 | /* should not happen - continue */ | |
1906 | break; | |
1907 | } | |
1908 | } | |
1909 | ||
1910 | erp->function = dasd_3990_erp_compound_code; | |
1911 | ||
1912 | return erp; | |
1913 | ||
1914 | } /* end dasd_3990_erp_compound_code */ | |
1915 | ||
1916 | /* | |
138c014d | 1917 | * DASD_3990_ERP_COMPOUND_CONFIG |
1da177e4 LT |
1918 | * |
1919 | * DESCRIPTION | |
1920 | * Handles the compound ERP action for configruation | |
1921 | * dependent error. | |
1922 | * Note: duplex handling is not implemented (yet). | |
1923 | * | |
1924 | * PARAMETER | |
1925 | * sense sense data of the actual error | |
1926 | * erp pointer to the currently created ERP | |
1927 | * | |
1928 | * RETURN VALUES | |
1929 | * erp modified ERP pointer | |
1930 | * | |
1931 | */ | |
1932 | static void | |
1933 | dasd_3990_erp_compound_config(struct dasd_ccw_req * erp, char *sense) | |
1934 | { | |
1935 | ||
1936 | if ((sense[25] & DASD_SENSE_BIT_1) && (sense[26] & DASD_SENSE_BIT_2)) { | |
1937 | ||
1938 | /* set to suspended duplex state then restart */ | |
8e09f215 | 1939 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1940 | |
1941 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
1942 | "Set device to suspended duplex state should be " | |
1943 | "done!\n" | |
1944 | "This is not implemented yet (for compound ERP)" | |
1945 | " - please report to linux390@de.ibm.com"); | |
1946 | ||
1947 | } | |
1948 | ||
1949 | erp->function = dasd_3990_erp_compound_config; | |
1950 | ||
1951 | } /* end dasd_3990_erp_compound_config */ | |
1952 | ||
1953 | /* | |
138c014d | 1954 | * DASD_3990_ERP_COMPOUND |
1da177e4 LT |
1955 | * |
1956 | * DESCRIPTION | |
138c014d | 1957 | * Does the further compound program action if |
1da177e4 LT |
1958 | * compound retry was not successful. |
1959 | * | |
1960 | * PARAMETER | |
1961 | * sense sense data of the actual error | |
1962 | * erp pointer to the current (failed) ERP | |
1963 | * | |
1964 | * RETURN VALUES | |
1965 | * erp (additional) ERP pointer | |
1966 | * | |
1967 | */ | |
1968 | static struct dasd_ccw_req * | |
1969 | dasd_3990_erp_compound(struct dasd_ccw_req * erp, char *sense) | |
1970 | { | |
1971 | ||
1972 | if ((erp->function == dasd_3990_erp_compound_retry) && | |
8e09f215 | 1973 | (erp->status == DASD_CQR_NEED_ERP)) { |
1da177e4 LT |
1974 | |
1975 | dasd_3990_erp_compound_path(erp, sense); | |
1976 | } | |
1977 | ||
1978 | if ((erp->function == dasd_3990_erp_compound_path) && | |
8e09f215 | 1979 | (erp->status == DASD_CQR_NEED_ERP)) { |
1da177e4 LT |
1980 | |
1981 | erp = dasd_3990_erp_compound_code(erp, sense); | |
1982 | } | |
1983 | ||
1984 | if ((erp->function == dasd_3990_erp_compound_code) && | |
8e09f215 | 1985 | (erp->status == DASD_CQR_NEED_ERP)) { |
1da177e4 LT |
1986 | |
1987 | dasd_3990_erp_compound_config(erp, sense); | |
1988 | } | |
1989 | ||
1990 | /* if no compound action ERP specified, the request failed */ | |
8e09f215 | 1991 | if (erp->status == DASD_CQR_NEED_ERP) |
1da177e4 | 1992 | erp->status = DASD_CQR_FAILED; |
1da177e4 LT |
1993 | |
1994 | return erp; | |
1995 | ||
1996 | } /* end dasd_3990_erp_compound */ | |
1997 | ||
f60c768c SH |
1998 | /* |
1999 | *DASD_3990_ERP_HANDLE_SIM | |
2000 | * | |
2001 | *DESCRIPTION | |
2002 | * inspects the SIM SENSE data and starts an appropriate action | |
2003 | * | |
2004 | * PARAMETER | |
2005 | * sense sense data of the actual error | |
2006 | * | |
2007 | * RETURN VALUES | |
2008 | * none | |
2009 | */ | |
2010 | void | |
2011 | dasd_3990_erp_handle_sim(struct dasd_device *device, char *sense) | |
2012 | { | |
2013 | /* print message according to log or message to operator mode */ | |
2014 | if ((sense[24] & DASD_SIM_MSG_TO_OP) || (sense[1] & 0x10)) { | |
2015 | ||
2016 | /* print SIM SRC from RefCode */ | |
2017 | DEV_MESSAGE(KERN_ERR, device, "SIM - SRC: " | |
2018 | "%02x%02x%02x%02x", sense[22], | |
2019 | sense[23], sense[11], sense[12]); | |
2020 | } else if (sense[24] & DASD_SIM_LOG) { | |
2021 | /* print SIM SRC Refcode */ | |
2022 | DEV_MESSAGE(KERN_WARNING, device, "SIM - SRC: " | |
2023 | "%02x%02x%02x%02x", sense[22], | |
2024 | sense[23], sense[11], sense[12]); | |
2025 | } | |
2026 | } | |
2027 | ||
1da177e4 | 2028 | /* |
138c014d | 2029 | * DASD_3990_ERP_INSPECT_32 |
1da177e4 LT |
2030 | * |
2031 | * DESCRIPTION | |
2032 | * Does a detailed inspection of the 32 byte sense data | |
138c014d | 2033 | * and sets up a related error recovery action. |
1da177e4 LT |
2034 | * |
2035 | * PARAMETER | |
2036 | * sense sense data of the actual error | |
2037 | * erp pointer to the currently created default ERP | |
2038 | * | |
2039 | * RETURN VALUES | |
2040 | * erp_filled pointer to the ERP | |
2041 | * | |
2042 | */ | |
2043 | static struct dasd_ccw_req * | |
2044 | dasd_3990_erp_inspect_32(struct dasd_ccw_req * erp, char *sense) | |
2045 | { | |
2046 | ||
8e09f215 | 2047 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
2048 | |
2049 | erp->function = dasd_3990_erp_inspect_32; | |
2050 | ||
f60c768c SH |
2051 | /* check for SIM sense data */ |
2052 | if ((sense[6] & DASD_SIM_SENSE) == DASD_SIM_SENSE) | |
2053 | dasd_3990_erp_handle_sim(device, sense); | |
2054 | ||
1da177e4 LT |
2055 | if (sense[25] & DASD_SENSE_BIT_0) { |
2056 | ||
2057 | /* compound program action codes (byte25 bit 0 == '1') */ | |
2058 | dasd_3990_erp_compound_retry(erp, sense); | |
2059 | ||
2060 | } else { | |
2061 | ||
2062 | /* single program action codes (byte25 bit 0 == '0') */ | |
2063 | switch (sense[25]) { | |
2064 | ||
2065 | case 0x00: /* success - use default ERP for retries */ | |
2066 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
2067 | "ERP called for successful request" | |
2068 | " - just retry"); | |
2069 | break; | |
2070 | ||
2071 | case 0x01: /* fatal error */ | |
2072 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
8e09f215 | 2073 | "Retry not recommended - Fatal error"); |
1da177e4 LT |
2074 | |
2075 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
2076 | break; | |
2077 | ||
2078 | case 0x02: /* intervention required */ | |
2079 | case 0x03: /* intervention required during dual copy */ | |
2080 | erp = dasd_3990_erp_int_req(erp); | |
2081 | break; | |
2082 | ||
2083 | case 0x0F: /* length mismatch during update write command */ | |
2084 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
2085 | "update write command error - should not " | |
2086 | "happen;\n" | |
2087 | "Please send this message together with " | |
2088 | "the above sense data to linux390@de." | |
2089 | "ibm.com"); | |
2090 | ||
2091 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
2092 | break; | |
2093 | ||
2094 | case 0x10: /* logging required for other channel program */ | |
2095 | erp = dasd_3990_erp_action_10_32(erp, sense); | |
2096 | break; | |
2097 | ||
2098 | case 0x15: /* next track outside defined extend */ | |
2099 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
2100 | "next track outside defined extend - " | |
2101 | "should not happen;\n" | |
2102 | "Please send this message together with " | |
2103 | "the above sense data to linux390@de." | |
2104 | "ibm.com"); | |
2105 | ||
2106 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
2107 | break; | |
2108 | ||
2109 | case 0x1B: /* unexpected condition during write */ | |
2110 | ||
2111 | erp = dasd_3990_erp_action_1B_32(erp, sense); | |
2112 | break; | |
2113 | ||
2114 | case 0x1C: /* invalid data */ | |
2115 | DEV_MESSAGE(KERN_EMERG, device, "%s", | |
2116 | "Data recovered during retry with PCI " | |
2117 | "fetch mode active"); | |
2118 | ||
2119 | /* not possible to handle this situation in Linux */ | |
2120 | panic | |
2121 | ("Invalid data - No way to inform application " | |
2122 | "about the possibly incorrect data"); | |
2123 | break; | |
2124 | ||
2125 | case 0x1D: /* state-change pending */ | |
2126 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
2127 | "A State change pending condition exists " | |
2128 | "for the subsystem or device"); | |
2129 | ||
2130 | erp = dasd_3990_erp_action_4(erp, sense); | |
2131 | break; | |
2132 | ||
2133 | case 0x1E: /* busy */ | |
2134 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
2135 | "Busy condition exists " | |
2136 | "for the subsystem or device"); | |
2137 | erp = dasd_3990_erp_action_4(erp, sense); | |
2138 | break; | |
2139 | ||
2140 | default: /* all others errors - default erp */ | |
2141 | break; | |
2142 | } | |
2143 | } | |
2144 | ||
2145 | return erp; | |
2146 | ||
2147 | } /* end dasd_3990_erp_inspect_32 */ | |
2148 | ||
2149 | /* | |
138c014d | 2150 | ***************************************************************************** |
1da177e4 | 2151 | * main ERP control fuctions (24 and 32 byte sense) |
138c014d | 2152 | ***************************************************************************** |
1da177e4 LT |
2153 | */ |
2154 | ||
6c5f57c7 SH |
2155 | /* |
2156 | * DASD_3990_ERP_CONTROL_CHECK | |
2157 | * | |
2158 | * DESCRIPTION | |
2159 | * Does a generic inspection if a control check occured and sets up | |
2160 | * the related error recovery procedure | |
2161 | * | |
2162 | * PARAMETER | |
2163 | * erp pointer to the currently created default ERP | |
2164 | * | |
2165 | * RETURN VALUES | |
2166 | * erp_filled pointer to the erp | |
2167 | */ | |
2168 | ||
2169 | static struct dasd_ccw_req * | |
2170 | dasd_3990_erp_control_check(struct dasd_ccw_req *erp) | |
2171 | { | |
2172 | struct dasd_device *device = erp->startdev; | |
2173 | ||
23d805b6 | 2174 | if (erp->refers->irb.scsw.cmd.cstat & (SCHN_STAT_INTF_CTRL_CHK |
6c5f57c7 SH |
2175 | | SCHN_STAT_CHN_CTRL_CHK)) { |
2176 | DEV_MESSAGE(KERN_DEBUG, device, "%s", | |
2177 | "channel or interface control check"); | |
2178 | erp = dasd_3990_erp_action_4(erp, NULL); | |
2179 | } | |
2180 | return erp; | |
2181 | } | |
2182 | ||
1da177e4 LT |
2183 | /* |
2184 | * DASD_3990_ERP_INSPECT | |
2185 | * | |
2186 | * DESCRIPTION | |
2187 | * Does a detailed inspection for sense data by calling either | |
2188 | * the 24-byte or the 32-byte inspection routine. | |
2189 | * | |
2190 | * PARAMETER | |
2191 | * erp pointer to the currently created default ERP | |
2192 | * RETURN VALUES | |
138c014d | 2193 | * erp_new contens was possibly modified |
1da177e4 LT |
2194 | */ |
2195 | static struct dasd_ccw_req * | |
2196 | dasd_3990_erp_inspect(struct dasd_ccw_req * erp) | |
2197 | { | |
2198 | ||
2199 | struct dasd_ccw_req *erp_new = NULL; | |
2200 | /* sense data are located in the refers record of the */ | |
2201 | /* already set up new ERP ! */ | |
2202 | char *sense = erp->refers->irb.ecw; | |
2203 | ||
8e09f215 SW |
2204 | /* if this problem occured on an alias retry on base */ |
2205 | erp_new = dasd_3990_erp_inspect_alias(erp); | |
2206 | if (erp_new) | |
2207 | return erp_new; | |
2208 | ||
6c5f57c7 SH |
2209 | /* check if no concurrent sens is available */ |
2210 | if (!erp->refers->irb.esw.esw0.erw.cons) | |
2211 | erp_new = dasd_3990_erp_control_check(erp); | |
1da177e4 | 2212 | /* distinguish between 24 and 32 byte sense data */ |
6c5f57c7 | 2213 | else if (sense[27] & DASD_SENSE_BIT_0) { |
1da177e4 LT |
2214 | |
2215 | /* inspect the 24 byte sense data */ | |
2216 | erp_new = dasd_3990_erp_inspect_24(erp, sense); | |
2217 | ||
2218 | } else { | |
2219 | ||
2220 | /* inspect the 32 byte sense data */ | |
2221 | erp_new = dasd_3990_erp_inspect_32(erp, sense); | |
2222 | ||
2223 | } /* end distinguish between 24 and 32 byte sense data */ | |
2224 | ||
2225 | return erp_new; | |
2226 | } | |
2227 | ||
2228 | /* | |
2229 | * DASD_3990_ERP_ADD_ERP | |
138c014d | 2230 | * |
1da177e4 LT |
2231 | * DESCRIPTION |
2232 | * This funtion adds an additional request block (ERP) to the head of | |
2233 | * the given cqr (or erp). | |
2234 | * This erp is initialized as an default erp (retry TIC) | |
2235 | * | |
2236 | * PARAMETER | |
138c014d | 2237 | * cqr head of the current ERP-chain (or single cqr if |
1da177e4 LT |
2238 | * first error) |
2239 | * RETURN VALUES | |
2240 | * erp pointer to new ERP-chain head | |
2241 | */ | |
2242 | static struct dasd_ccw_req * | |
2243 | dasd_3990_erp_add_erp(struct dasd_ccw_req * cqr) | |
2244 | { | |
2245 | ||
8e09f215 | 2246 | struct dasd_device *device = cqr->startdev; |
1da177e4 LT |
2247 | struct ccw1 *ccw; |
2248 | ||
2249 | /* allocate additional request block */ | |
2250 | struct dasd_ccw_req *erp; | |
2251 | ||
8e09f215 | 2252 | erp = dasd_alloc_erp_request((char *) &cqr->magic, 2, 0, device); |
1da177e4 LT |
2253 | if (IS_ERR(erp)) { |
2254 | if (cqr->retries <= 0) { | |
2255 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
2256 | "Unable to allocate ERP request"); | |
2257 | cqr->status = DASD_CQR_FAILED; | |
2258 | cqr->stopclk = get_clock (); | |
2259 | } else { | |
2260 | DEV_MESSAGE (KERN_ERR, device, | |
2261 | "Unable to allocate ERP request " | |
2262 | "(%i retries left)", | |
2263 | cqr->retries); | |
8e09f215 | 2264 | dasd_block_set_timer(device->block, (HZ << 3)); |
1da177e4 LT |
2265 | } |
2266 | return cqr; | |
2267 | } | |
2268 | ||
2269 | /* initialize request with default TIC to current ERP/CQR */ | |
2270 | ccw = erp->cpaddr; | |
2271 | ccw->cmd_code = CCW_CMD_NOOP; | |
2272 | ccw->flags = CCW_FLAG_CC; | |
2273 | ccw++; | |
2274 | ccw->cmd_code = CCW_CMD_TIC; | |
2275 | ccw->cda = (long)(cqr->cpaddr); | |
2276 | erp->function = dasd_3990_erp_add_erp; | |
2277 | erp->refers = cqr; | |
8e09f215 SW |
2278 | erp->startdev = device; |
2279 | erp->memdev = device; | |
2280 | erp->block = cqr->block; | |
1da177e4 LT |
2281 | erp->magic = cqr->magic; |
2282 | erp->expires = 0; | |
2283 | erp->retries = 256; | |
2284 | erp->buildclk = get_clock(); | |
2285 | ||
2286 | erp->status = DASD_CQR_FILLED; | |
2287 | ||
2288 | return erp; | |
2289 | } | |
2290 | ||
2291 | /* | |
138c014d HH |
2292 | * DASD_3990_ERP_ADDITIONAL_ERP |
2293 | * | |
1da177e4 LT |
2294 | * DESCRIPTION |
2295 | * An additional ERP is needed to handle the current error. | |
2296 | * Add ERP to the head of the ERP-chain containing the ERP processing | |
2297 | * determined based on the sense data. | |
2298 | * | |
2299 | * PARAMETER | |
138c014d | 2300 | * cqr head of the current ERP-chain (or single cqr if |
1da177e4 LT |
2301 | * first error) |
2302 | * | |
2303 | * RETURN VALUES | |
2304 | * erp pointer to new ERP-chain head | |
2305 | */ | |
2306 | static struct dasd_ccw_req * | |
2307 | dasd_3990_erp_additional_erp(struct dasd_ccw_req * cqr) | |
2308 | { | |
2309 | ||
2310 | struct dasd_ccw_req *erp = NULL; | |
2311 | ||
2312 | /* add erp and initialize with default TIC */ | |
2313 | erp = dasd_3990_erp_add_erp(cqr); | |
2314 | ||
2315 | /* inspect sense, determine specific ERP if possible */ | |
2316 | if (erp != cqr) { | |
2317 | ||
2318 | erp = dasd_3990_erp_inspect(erp); | |
2319 | } | |
2320 | ||
2321 | return erp; | |
2322 | ||
2323 | } /* end dasd_3990_erp_additional_erp */ | |
2324 | ||
2325 | /* | |
2326 | * DASD_3990_ERP_ERROR_MATCH | |
2327 | * | |
2328 | * DESCRIPTION | |
2329 | * Check if the device status of the given cqr is the same. | |
2330 | * This means that the failed CCW and the relevant sense data | |
2331 | * must match. | |
2332 | * I don't distinguish between 24 and 32 byte sense because in case of | |
2333 | * 24 byte sense byte 25 and 27 is set as well. | |
2334 | * | |
2335 | * PARAMETER | |
138c014d | 2336 | * cqr1 first cqr, which will be compared with the |
1da177e4 LT |
2337 | * cqr2 second cqr. |
2338 | * | |
2339 | * RETURN VALUES | |
2340 | * match 'boolean' for match found | |
2341 | * returns 1 if match found, otherwise 0. | |
2342 | */ | |
2343 | static int | |
2344 | dasd_3990_erp_error_match(struct dasd_ccw_req *cqr1, struct dasd_ccw_req *cqr2) | |
2345 | { | |
2346 | ||
5c12f240 SW |
2347 | if (cqr1->startdev != cqr2->startdev) |
2348 | return 0; | |
1da177e4 | 2349 | |
6c5f57c7 SH |
2350 | if (cqr1->irb.esw.esw0.erw.cons != cqr2->irb.esw.esw0.erw.cons) |
2351 | return 0; | |
2352 | ||
2353 | if ((cqr1->irb.esw.esw0.erw.cons == 0) && | |
2354 | (cqr2->irb.esw.esw0.erw.cons == 0)) { | |
23d805b6 | 2355 | if ((cqr1->irb.scsw.cmd.cstat & (SCHN_STAT_INTF_CTRL_CHK | |
6c5f57c7 | 2356 | SCHN_STAT_CHN_CTRL_CHK)) == |
23d805b6 | 2357 | (cqr2->irb.scsw.cmd.cstat & (SCHN_STAT_INTF_CTRL_CHK | |
6c5f57c7 SH |
2358 | SCHN_STAT_CHN_CTRL_CHK))) |
2359 | return 1; /* match with ifcc*/ | |
2360 | } | |
1da177e4 LT |
2361 | /* check sense data; byte 0-2,25,27 */ |
2362 | if (!((memcmp (cqr1->irb.ecw, cqr2->irb.ecw, 3) == 0) && | |
2363 | (cqr1->irb.ecw[27] == cqr2->irb.ecw[27]) && | |
2364 | (cqr1->irb.ecw[25] == cqr2->irb.ecw[25]))) { | |
2365 | ||
2366 | return 0; /* sense doesn't match */ | |
2367 | } | |
2368 | ||
2369 | return 1; /* match */ | |
2370 | ||
2371 | } /* end dasd_3990_erp_error_match */ | |
2372 | ||
2373 | /* | |
2374 | * DASD_3990_ERP_IN_ERP | |
2375 | * | |
2376 | * DESCRIPTION | |
2377 | * check if the current error already happened before. | |
2378 | * quick exit if current cqr is not an ERP (cqr->refers=NULL) | |
2379 | * | |
2380 | * PARAMETER | |
2381 | * cqr failed cqr (either original cqr or already an erp) | |
2382 | * | |
2383 | * RETURN VALUES | |
138c014d | 2384 | * erp erp-pointer to the already defined error |
1da177e4 LT |
2385 | * recovery procedure OR |
2386 | * NULL if a 'new' error occurred. | |
2387 | */ | |
2388 | static struct dasd_ccw_req * | |
2389 | dasd_3990_erp_in_erp(struct dasd_ccw_req *cqr) | |
2390 | { | |
2391 | ||
2392 | struct dasd_ccw_req *erp_head = cqr, /* save erp chain head */ | |
2393 | *erp_match = NULL; /* save erp chain head */ | |
2394 | int match = 0; /* 'boolean' for matching error found */ | |
2395 | ||
2396 | if (cqr->refers == NULL) { /* return if not in erp */ | |
2397 | return NULL; | |
2398 | } | |
2399 | ||
2400 | /* check the erp/cqr chain for current error */ | |
2401 | do { | |
2402 | match = dasd_3990_erp_error_match(erp_head, cqr->refers); | |
2403 | erp_match = cqr; /* save possible matching erp */ | |
2404 | cqr = cqr->refers; /* check next erp/cqr in queue */ | |
2405 | ||
2406 | } while ((cqr->refers != NULL) && (!match)); | |
2407 | ||
2408 | if (!match) { | |
2409 | return NULL; /* no match was found */ | |
2410 | } | |
2411 | ||
2412 | return erp_match; /* return address of matching erp */ | |
2413 | ||
2414 | } /* END dasd_3990_erp_in_erp */ | |
2415 | ||
2416 | /* | |
2417 | * DASD_3990_ERP_FURTHER_ERP (24 & 32 byte sense) | |
2418 | * | |
2419 | * DESCRIPTION | |
138c014d | 2420 | * No retry is left for the current ERP. Check what has to be done |
1da177e4 LT |
2421 | * with the ERP. |
2422 | * - do further defined ERP action or | |
138c014d | 2423 | * - wait for interrupt or |
1da177e4 LT |
2424 | * - exit with permanent error |
2425 | * | |
2426 | * PARAMETER | |
2427 | * erp ERP which is in progress with no retry left | |
2428 | * | |
2429 | * RETURN VALUES | |
2430 | * erp modified/additional ERP | |
2431 | */ | |
2432 | static struct dasd_ccw_req * | |
2433 | dasd_3990_erp_further_erp(struct dasd_ccw_req *erp) | |
2434 | { | |
2435 | ||
8e09f215 | 2436 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
2437 | char *sense = erp->irb.ecw; |
2438 | ||
2439 | /* check for 24 byte sense ERP */ | |
2440 | if ((erp->function == dasd_3990_erp_bus_out) || | |
2441 | (erp->function == dasd_3990_erp_action_1) || | |
2442 | (erp->function == dasd_3990_erp_action_4)) { | |
2443 | ||
2444 | erp = dasd_3990_erp_action_1(erp); | |
2445 | ||
2446 | } else if (erp->function == dasd_3990_erp_action_5) { | |
2447 | ||
2448 | /* retries have not been successful */ | |
2449 | /* prepare erp for retry on different channel path */ | |
2450 | erp = dasd_3990_erp_action_1(erp); | |
2451 | ||
2452 | if (!(sense[2] & DASD_SENSE_BIT_0)) { | |
2453 | ||
138c014d | 2454 | /* issue a Diagnostic Control command with an |
1da177e4 LT |
2455 | * Inhibit Write subcommand */ |
2456 | ||
2457 | switch (sense[25]) { | |
2458 | case 0x17: | |
2459 | case 0x57:{ /* controller */ | |
2460 | erp = dasd_3990_erp_DCTL(erp, 0x20); | |
2461 | break; | |
2462 | } | |
2463 | case 0x18: | |
2464 | case 0x58:{ /* channel path */ | |
2465 | erp = dasd_3990_erp_DCTL(erp, 0x40); | |
2466 | break; | |
2467 | } | |
2468 | case 0x19: | |
2469 | case 0x59:{ /* storage director */ | |
2470 | erp = dasd_3990_erp_DCTL(erp, 0x80); | |
2471 | break; | |
2472 | } | |
2473 | default: | |
2474 | DEV_MESSAGE(KERN_DEBUG, device, | |
2475 | "invalid subcommand modifier 0x%x " | |
2476 | "for Diagnostic Control Command", | |
2477 | sense[25]); | |
2478 | } | |
2479 | } | |
2480 | ||
2481 | /* check for 32 byte sense ERP */ | |
2482 | } else if ((erp->function == dasd_3990_erp_compound_retry) || | |
2483 | (erp->function == dasd_3990_erp_compound_path) || | |
2484 | (erp->function == dasd_3990_erp_compound_code) || | |
2485 | (erp->function == dasd_3990_erp_compound_config)) { | |
2486 | ||
2487 | erp = dasd_3990_erp_compound(erp, sense); | |
2488 | ||
2489 | } else { | |
2490 | /* No retry left and no additional special handling */ | |
2491 | /*necessary */ | |
2492 | DEV_MESSAGE(KERN_ERR, device, | |
2493 | "no retries left for erp %p - " | |
2494 | "set status to FAILED", erp); | |
2495 | ||
2496 | erp->status = DASD_CQR_FAILED; | |
2497 | } | |
2498 | ||
2499 | return erp; | |
2500 | ||
2501 | } /* end dasd_3990_erp_further_erp */ | |
2502 | ||
2503 | /* | |
138c014d | 2504 | * DASD_3990_ERP_HANDLE_MATCH_ERP |
1da177e4 LT |
2505 | * |
2506 | * DESCRIPTION | |
2507 | * An error occurred again and an ERP has been detected which is already | |
138c014d | 2508 | * used to handle this error (e.g. retries). |
1da177e4 LT |
2509 | * All prior ERP's are asumed to be successful and therefore removed |
2510 | * from queue. | |
138c014d | 2511 | * If retry counter of matching erp is already 0, it is checked if further |
1da177e4 LT |
2512 | * action is needed (besides retry) or if the ERP has failed. |
2513 | * | |
2514 | * PARAMETER | |
2515 | * erp_head first ERP in ERP-chain | |
2516 | * erp ERP that handles the actual error. | |
2517 | * (matching erp) | |
2518 | * | |
2519 | * RETURN VALUES | |
2520 | * erp modified/additional ERP | |
2521 | */ | |
2522 | static struct dasd_ccw_req * | |
2523 | dasd_3990_erp_handle_match_erp(struct dasd_ccw_req *erp_head, | |
2524 | struct dasd_ccw_req *erp) | |
2525 | { | |
2526 | ||
8e09f215 | 2527 | struct dasd_device *device = erp_head->startdev; |
1da177e4 LT |
2528 | struct dasd_ccw_req *erp_done = erp_head; /* finished req */ |
2529 | struct dasd_ccw_req *erp_free = NULL; /* req to be freed */ | |
2530 | ||
2531 | /* loop over successful ERPs and remove them from chanq */ | |
2532 | while (erp_done != erp) { | |
2533 | ||
2534 | if (erp_done == NULL) /* end of chain reached */ | |
2535 | panic(PRINTK_HEADER "Programming error in ERP! The " | |
2536 | "original request was lost\n"); | |
2537 | ||
2538 | /* remove the request from the device queue */ | |
8e09f215 | 2539 | list_del(&erp_done->blocklist); |
1da177e4 LT |
2540 | |
2541 | erp_free = erp_done; | |
2542 | erp_done = erp_done->refers; | |
2543 | ||
2544 | /* free the finished erp request */ | |
8e09f215 | 2545 | dasd_free_erp_request(erp_free, erp_free->memdev); |
1da177e4 LT |
2546 | |
2547 | } /* end while */ | |
2548 | ||
2549 | if (erp->retries > 0) { | |
2550 | ||
2551 | char *sense = erp->refers->irb.ecw; | |
2552 | ||
2553 | /* check for special retries */ | |
2554 | if (erp->function == dasd_3990_erp_action_4) { | |
2555 | ||
2556 | erp = dasd_3990_erp_action_4(erp, sense); | |
2557 | ||
2558 | } else if (erp->function == dasd_3990_erp_action_1B_32) { | |
2559 | ||
2560 | erp = dasd_3990_update_1B(erp, sense); | |
2561 | ||
2562 | } else if (erp->function == dasd_3990_erp_int_req) { | |
2563 | ||
2564 | erp = dasd_3990_erp_int_req(erp); | |
2565 | ||
2566 | } else { | |
2567 | /* simple retry */ | |
2568 | DEV_MESSAGE(KERN_DEBUG, device, | |
2569 | "%i retries left for erp %p", | |
2570 | erp->retries, erp); | |
2571 | ||
2572 | /* handle the request again... */ | |
8e09f215 | 2573 | erp->status = DASD_CQR_FILLED; |
1da177e4 LT |
2574 | } |
2575 | ||
2576 | } else { | |
2577 | /* no retry left - check for further necessary action */ | |
2578 | /* if no further actions, handle rest as permanent error */ | |
2579 | erp = dasd_3990_erp_further_erp(erp); | |
2580 | } | |
2581 | ||
2582 | return erp; | |
2583 | ||
2584 | } /* end dasd_3990_erp_handle_match_erp */ | |
2585 | ||
2586 | /* | |
2587 | * DASD_3990_ERP_ACTION | |
2588 | * | |
2589 | * DESCRIPTION | |
5d67d164 | 2590 | * control routine for 3990 erp actions. |
1da177e4 LT |
2591 | * Has to be called with the queue lock (namely the s390_irq_lock) acquired. |
2592 | * | |
2593 | * PARAMETER | |
2594 | * cqr failed cqr (either original cqr or already an erp) | |
2595 | * | |
2596 | * RETURN VALUES | |
2597 | * erp erp-pointer to the head of the ERP action chain. | |
2598 | * This means: | |
2599 | * - either a ptr to an additional ERP cqr or | |
138c014d | 2600 | * - the original given cqr (which's status might |
1da177e4 LT |
2601 | * be modified) |
2602 | */ | |
2603 | struct dasd_ccw_req * | |
2604 | dasd_3990_erp_action(struct dasd_ccw_req * cqr) | |
2605 | { | |
1da177e4 | 2606 | struct dasd_ccw_req *erp = NULL; |
8e09f215 | 2607 | struct dasd_device *device = cqr->startdev; |
9575bf26 | 2608 | struct dasd_ccw_req *temp_erp = NULL; |
1da177e4 | 2609 | |
9575bf26 HH |
2610 | if (device->features & DASD_FEATURE_ERPLOG) { |
2611 | /* print current erp_chain */ | |
2612 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
2613 | "ERP chain at BEGINNING of ERP-ACTION"); | |
1da177e4 LT |
2614 | for (temp_erp = cqr; |
2615 | temp_erp != NULL; temp_erp = temp_erp->refers) { | |
2616 | ||
2617 | DEV_MESSAGE(KERN_ERR, device, | |
2618 | " erp %p (%02x) refers to %p", | |
2619 | temp_erp, temp_erp->status, | |
2620 | temp_erp->refers); | |
2621 | } | |
2622 | } | |
1da177e4 LT |
2623 | |
2624 | /* double-check if current erp/cqr was successfull */ | |
23d805b6 PO |
2625 | if ((cqr->irb.scsw.cmd.cstat == 0x00) && |
2626 | (cqr->irb.scsw.cmd.dstat == | |
2627 | (DEV_STAT_CHN_END | DEV_STAT_DEV_END))) { | |
1da177e4 LT |
2628 | |
2629 | DEV_MESSAGE(KERN_DEBUG, device, | |
2630 | "ERP called for successful request %p" | |
2631 | " - NO ERP necessary", cqr); | |
2632 | ||
2633 | cqr->status = DASD_CQR_DONE; | |
2634 | ||
2635 | return cqr; | |
2636 | } | |
1da177e4 LT |
2637 | |
2638 | /* check if error happened before */ | |
2639 | erp = dasd_3990_erp_in_erp(cqr); | |
2640 | ||
2641 | if (erp == NULL) { | |
2642 | /* no matching erp found - set up erp */ | |
2643 | erp = dasd_3990_erp_additional_erp(cqr); | |
2644 | } else { | |
2645 | /* matching erp found - set all leading erp's to DONE */ | |
2646 | erp = dasd_3990_erp_handle_match_erp(cqr, erp); | |
2647 | } | |
2648 | ||
9575bf26 HH |
2649 | if (device->features & DASD_FEATURE_ERPLOG) { |
2650 | /* print current erp_chain */ | |
2651 | DEV_MESSAGE(KERN_ERR, device, "%s", | |
2652 | "ERP chain at END of ERP-ACTION"); | |
1da177e4 LT |
2653 | for (temp_erp = erp; |
2654 | temp_erp != NULL; temp_erp = temp_erp->refers) { | |
2655 | ||
2656 | DEV_MESSAGE(KERN_ERR, device, | |
2657 | " erp %p (%02x) refers to %p", | |
2658 | temp_erp, temp_erp->status, | |
2659 | temp_erp->refers); | |
2660 | } | |
2661 | } | |
1da177e4 | 2662 | |
8e09f215 SW |
2663 | /* enqueue ERP request if it's a new one */ |
2664 | if (list_empty(&erp->blocklist)) { | |
2665 | cqr->status = DASD_CQR_IN_ERP; | |
2666 | /* add erp request before the cqr */ | |
2667 | list_add_tail(&erp->blocklist, &cqr->blocklist); | |
1da177e4 LT |
2668 | } |
2669 | ||
2670 | return erp; | |
2671 | ||
2672 | } /* end dasd_3990_erp_action */ |