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 | ||
ca99dab0 | 10 | #define KMSG_COMPONENT "dasd-eckd" |
fc19f381 | 11 | |
1da177e4 LT |
12 | #include <linux/timer.h> |
13 | #include <linux/slab.h> | |
14 | #include <asm/idals.h> | |
1da177e4 LT |
15 | |
16 | #define PRINTK_HEADER "dasd_erp(3990): " | |
17 | ||
18 | #include "dasd_int.h" | |
19 | #include "dasd_eckd.h" | |
20 | ||
21 | ||
22 | struct DCTL_data { | |
23 | unsigned char subcommand; /* e.g Inhibit Write, Enable Write,... */ | |
24 | unsigned char modifier; /* Subcommand modifier */ | |
25 | unsigned short res; /* reserved */ | |
26 | } __attribute__ ((packed)); | |
27 | ||
1da177e4 | 28 | /* |
138c014d | 29 | ***************************************************************************** |
1da177e4 | 30 | * SECTION ERP HANDLING |
138c014d | 31 | ***************************************************************************** |
1da177e4 LT |
32 | */ |
33 | /* | |
138c014d | 34 | ***************************************************************************** |
1da177e4 | 35 | * 24 and 32 byte sense ERP functions |
138c014d | 36 | ***************************************************************************** |
1da177e4 LT |
37 | */ |
38 | ||
39 | /* | |
138c014d | 40 | * DASD_3990_ERP_CLEANUP |
1da177e4 LT |
41 | * |
42 | * DESCRIPTION | |
43 | * Removes the already build but not necessary ERP request and sets | |
44 | * the status of the original cqr / erp to the given (final) status | |
45 | * | |
46 | * PARAMETER | |
47 | * erp request to be blocked | |
138c014d | 48 | * final_status either DASD_CQR_DONE or DASD_CQR_FAILED |
1da177e4 LT |
49 | * |
50 | * RETURN VALUES | |
138c014d | 51 | * cqr original cqr |
1da177e4 LT |
52 | */ |
53 | static struct dasd_ccw_req * | |
54 | dasd_3990_erp_cleanup(struct dasd_ccw_req * erp, char final_status) | |
55 | { | |
56 | struct dasd_ccw_req *cqr = erp->refers; | |
57 | ||
8e09f215 | 58 | dasd_free_erp_request(erp, erp->memdev); |
1da177e4 LT |
59 | cqr->status = final_status; |
60 | return cqr; | |
61 | ||
62 | } /* end dasd_3990_erp_cleanup */ | |
63 | ||
64 | /* | |
138c014d | 65 | * DASD_3990_ERP_BLOCK_QUEUE |
1da177e4 LT |
66 | * |
67 | * DESCRIPTION | |
68 | * Block the given device request queue to prevent from further | |
69 | * processing until the started timer has expired or an related | |
70 | * interrupt was received. | |
71 | */ | |
eb6e199b | 72 | static void dasd_3990_erp_block_queue(struct dasd_ccw_req *erp, int expires) |
1da177e4 LT |
73 | { |
74 | ||
8e09f215 SW |
75 | struct dasd_device *device = erp->startdev; |
76 | unsigned long flags; | |
1da177e4 | 77 | |
fc19f381 | 78 | DBF_DEV_EVENT(DBF_INFO, device, |
1da177e4 LT |
79 | "blocking request queue for %is", expires/HZ); |
80 | ||
8e09f215 | 81 | spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); |
eb6e199b | 82 | dasd_device_set_stop_bits(device, DASD_STOPPED_PENDING); |
8e09f215 SW |
83 | spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); |
84 | erp->status = DASD_CQR_FILLED; | |
eb6e199b SW |
85 | if (erp->block) |
86 | dasd_block_set_timer(erp->block, expires); | |
87 | else | |
88 | dasd_device_set_timer(device, expires); | |
1da177e4 LT |
89 | } |
90 | ||
91 | /* | |
138c014d | 92 | * DASD_3990_ERP_INT_REQ |
1da177e4 LT |
93 | * |
94 | * DESCRIPTION | |
95 | * Handles 'Intervention Required' error. | |
96 | * This means either device offline or not installed. | |
97 | * | |
98 | * PARAMETER | |
99 | * erp current erp | |
100 | * RETURN VALUES | |
101 | * erp modified erp | |
102 | */ | |
103 | static struct dasd_ccw_req * | |
104 | dasd_3990_erp_int_req(struct dasd_ccw_req * erp) | |
105 | { | |
106 | ||
8e09f215 | 107 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
108 | |
109 | /* first time set initial retry counter and erp_function */ | |
110 | /* and retry once without blocking queue */ | |
111 | /* (this enables easier enqueing of the cqr) */ | |
112 | if (erp->function != dasd_3990_erp_int_req) { | |
113 | ||
114 | erp->retries = 256; | |
115 | erp->function = dasd_3990_erp_int_req; | |
116 | ||
117 | } else { | |
118 | ||
119 | /* issue a message and wait for 'device ready' interrupt */ | |
fc19f381 | 120 | dev_err(&device->cdev->dev, |
1da177e4 | 121 | "is offline or not installed - " |
fc19f381 | 122 | "INTERVENTION REQUIRED!!\n"); |
1da177e4 LT |
123 | |
124 | dasd_3990_erp_block_queue(erp, 60*HZ); | |
125 | } | |
126 | ||
127 | return erp; | |
128 | ||
129 | } /* end dasd_3990_erp_int_req */ | |
130 | ||
131 | /* | |
138c014d | 132 | * DASD_3990_ERP_ALTERNATE_PATH |
1da177e4 LT |
133 | * |
134 | * DESCRIPTION | |
135 | * Repeat the operation on a different channel path. | |
136 | * If all alternate paths have been tried, the request is posted with a | |
137 | * permanent error. | |
138 | * | |
139 | * PARAMETER | |
140 | * erp pointer to the current ERP | |
141 | * | |
142 | * RETURN VALUES | |
143 | * erp modified pointer to the ERP | |
144 | */ | |
145 | static void | |
146 | dasd_3990_erp_alternate_path(struct dasd_ccw_req * erp) | |
147 | { | |
8e09f215 | 148 | struct dasd_device *device = erp->startdev; |
1da177e4 | 149 | __u8 opm; |
8e09f215 | 150 | unsigned long flags; |
1da177e4 LT |
151 | |
152 | /* try alternate valid path */ | |
8e09f215 | 153 | spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); |
1da177e4 | 154 | opm = ccw_device_get_path_mask(device->cdev); |
8e09f215 | 155 | spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); |
1da177e4 LT |
156 | //FIXME: start with get_opm ? |
157 | if (erp->lpm == 0) | |
158 | erp->lpm = LPM_ANYPATH & ~(erp->irb.esw.esw0.sublog.lpum); | |
159 | else | |
160 | erp->lpm &= ~(erp->irb.esw.esw0.sublog.lpum); | |
161 | ||
162 | if ((erp->lpm & opm) != 0x00) { | |
163 | ||
fc19f381 | 164 | DBF_DEV_EVENT(DBF_WARNING, device, |
1da177e4 LT |
165 | "try alternate lpm=%x (lpum=%x / opm=%x)", |
166 | erp->lpm, erp->irb.esw.esw0.sublog.lpum, opm); | |
167 | ||
8e09f215 SW |
168 | /* reset status to submit the request again... */ |
169 | erp->status = DASD_CQR_FILLED; | |
6c5f57c7 | 170 | erp->retries = 10; |
1da177e4 | 171 | } else { |
fc19f381 SH |
172 | dev_err(&device->cdev->dev, |
173 | "The DASD cannot be reached on any path (lpum=%x" | |
174 | "/opm=%x)\n", erp->irb.esw.esw0.sublog.lpum, opm); | |
1da177e4 LT |
175 | |
176 | /* post request with permanent error */ | |
8e09f215 | 177 | erp->status = DASD_CQR_FAILED; |
1da177e4 LT |
178 | } |
179 | } /* end dasd_3990_erp_alternate_path */ | |
180 | ||
181 | /* | |
182 | * DASD_3990_ERP_DCTL | |
183 | * | |
184 | * DESCRIPTION | |
138c014d | 185 | * Setup cqr to do the Diagnostic Control (DCTL) command with an |
1da177e4 LT |
186 | * Inhibit Write subcommand (0x20) and the given modifier. |
187 | * | |
188 | * PARAMETER | |
189 | * erp pointer to the current (failed) ERP | |
190 | * modifier subcommand modifier | |
138c014d | 191 | * |
1da177e4 | 192 | * RETURN VALUES |
138c014d | 193 | * dctl_cqr pointer to NEW dctl_cqr |
1da177e4 LT |
194 | * |
195 | */ | |
196 | static struct dasd_ccw_req * | |
197 | dasd_3990_erp_DCTL(struct dasd_ccw_req * erp, char modifier) | |
198 | { | |
199 | ||
8e09f215 | 200 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
201 | struct DCTL_data *DCTL_data; |
202 | struct ccw1 *ccw; | |
203 | struct dasd_ccw_req *dctl_cqr; | |
204 | ||
205 | dctl_cqr = dasd_alloc_erp_request((char *) &erp->magic, 1, | |
8e09f215 SW |
206 | sizeof(struct DCTL_data), |
207 | device); | |
1da177e4 | 208 | if (IS_ERR(dctl_cqr)) { |
fc19f381 SH |
209 | dev_err(&device->cdev->dev, |
210 | "Unable to allocate DCTL-CQR\n"); | |
1da177e4 LT |
211 | erp->status = DASD_CQR_FAILED; |
212 | return erp; | |
213 | } | |
214 | ||
215 | DCTL_data = dctl_cqr->data; | |
216 | ||
217 | DCTL_data->subcommand = 0x02; /* Inhibit Write */ | |
218 | DCTL_data->modifier = modifier; | |
219 | ||
220 | ccw = dctl_cqr->cpaddr; | |
8e09f215 | 221 | memset(ccw, 0, sizeof(struct ccw1)); |
1da177e4 LT |
222 | ccw->cmd_code = CCW_CMD_DCTL; |
223 | ccw->count = 4; | |
224 | ccw->cda = (__u32)(addr_t) DCTL_data; | |
225 | dctl_cqr->function = dasd_3990_erp_DCTL; | |
226 | dctl_cqr->refers = erp; | |
8e09f215 SW |
227 | dctl_cqr->startdev = device; |
228 | dctl_cqr->memdev = device; | |
1da177e4 LT |
229 | dctl_cqr->magic = erp->magic; |
230 | dctl_cqr->expires = 5 * 60 * HZ; | |
231 | dctl_cqr->retries = 2; | |
232 | ||
233 | dctl_cqr->buildclk = get_clock(); | |
234 | ||
235 | dctl_cqr->status = DASD_CQR_FILLED; | |
236 | ||
237 | return dctl_cqr; | |
238 | ||
239 | } /* end dasd_3990_erp_DCTL */ | |
240 | ||
241 | /* | |
138c014d | 242 | * DASD_3990_ERP_ACTION_1 |
1da177e4 LT |
243 | * |
244 | * DESCRIPTION | |
245 | * Setup ERP to do the ERP action 1 (see Reference manual). | |
246 | * Repeat the operation on a different channel path. | |
eb6e199b SW |
247 | * As deviation from the recommended recovery action, we reset the path mask |
248 | * after we have tried each path and go through all paths a second time. | |
249 | * This will cover situations where only one path at a time is actually down, | |
250 | * but all paths fail and recover just with the same sequence and timing as | |
251 | * we try to use them (flapping links). | |
252 | * If all alternate paths have been tried twice, the request is posted with | |
253 | * a permanent error. | |
1da177e4 LT |
254 | * |
255 | * PARAMETER | |
256 | * erp pointer to the current ERP | |
257 | * | |
258 | * RETURN VALUES | |
259 | * erp pointer to the ERP | |
260 | * | |
261 | */ | |
eb6e199b | 262 | static struct dasd_ccw_req *dasd_3990_erp_action_1_sec(struct dasd_ccw_req *erp) |
1da177e4 | 263 | { |
eb6e199b SW |
264 | erp->function = dasd_3990_erp_action_1_sec; |
265 | dasd_3990_erp_alternate_path(erp); | |
266 | return erp; | |
267 | } | |
1da177e4 | 268 | |
eb6e199b SW |
269 | static struct dasd_ccw_req *dasd_3990_erp_action_1(struct dasd_ccw_req *erp) |
270 | { | |
1da177e4 | 271 | erp->function = dasd_3990_erp_action_1; |
1da177e4 | 272 | dasd_3990_erp_alternate_path(erp); |
eb6e199b SW |
273 | if (erp->status == DASD_CQR_FAILED) { |
274 | erp->status = DASD_CQR_FILLED; | |
275 | erp->retries = 10; | |
276 | erp->lpm = LPM_ANYPATH; | |
277 | erp->function = dasd_3990_erp_action_1_sec; | |
278 | } | |
1da177e4 | 279 | return erp; |
eb6e199b | 280 | } /* end dasd_3990_erp_action_1(b) */ |
1da177e4 LT |
281 | |
282 | /* | |
138c014d | 283 | * DASD_3990_ERP_ACTION_4 |
1da177e4 LT |
284 | * |
285 | * DESCRIPTION | |
286 | * Setup ERP to do the ERP action 4 (see Reference manual). | |
287 | * Set the current request to PENDING to block the CQR queue for that device | |
288 | * until the state change interrupt appears. | |
289 | * Use a timer (20 seconds) to retry the cqr if the interrupt is still | |
290 | * missing. | |
291 | * | |
292 | * PARAMETER | |
293 | * sense sense data of the actual error | |
294 | * erp pointer to the current ERP | |
295 | * | |
296 | * RETURN VALUES | |
297 | * erp pointer to the ERP | |
298 | * | |
299 | */ | |
300 | static struct dasd_ccw_req * | |
301 | dasd_3990_erp_action_4(struct dasd_ccw_req * erp, char *sense) | |
302 | { | |
303 | ||
8e09f215 | 304 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
305 | |
306 | /* first time set initial retry counter and erp_function */ | |
307 | /* and retry once without waiting for state change pending */ | |
308 | /* interrupt (this enables easier enqueing of the cqr) */ | |
309 | if (erp->function != dasd_3990_erp_action_4) { | |
310 | ||
fc19f381 | 311 | DBF_DEV_EVENT(DBF_INFO, device, "%s", |
1da177e4 LT |
312 | "dasd_3990_erp_action_4: first time retry"); |
313 | ||
314 | erp->retries = 256; | |
315 | erp->function = dasd_3990_erp_action_4; | |
316 | ||
317 | } else { | |
6c5f57c7 | 318 | if (sense && (sense[25] == 0x1D)) { /* state change pending */ |
1da177e4 | 319 | |
fc19f381 | 320 | DBF_DEV_EVENT(DBF_INFO, device, |
1da177e4 LT |
321 | "waiting for state change pending " |
322 | "interrupt, %d retries left", | |
323 | erp->retries); | |
138c014d | 324 | |
1da177e4 LT |
325 | dasd_3990_erp_block_queue(erp, 30*HZ); |
326 | ||
6c5f57c7 | 327 | } else if (sense && (sense[25] == 0x1E)) { /* busy */ |
fc19f381 | 328 | DBF_DEV_EVENT(DBF_INFO, device, |
1da177e4 LT |
329 | "busy - redriving request later, " |
330 | "%d retries left", | |
331 | erp->retries); | |
332 | dasd_3990_erp_block_queue(erp, HZ); | |
333 | } else { | |
1da177e4 | 334 | /* no state change pending - retry */ |
fc19f381 | 335 | DBF_DEV_EVENT(DBF_INFO, device, |
1da177e4 | 336 | "redriving request immediately, " |
138c014d | 337 | "%d retries left", |
1da177e4 | 338 | erp->retries); |
8e09f215 | 339 | erp->status = DASD_CQR_FILLED; |
1da177e4 LT |
340 | } |
341 | } | |
342 | ||
343 | return erp; | |
344 | ||
345 | } /* end dasd_3990_erp_action_4 */ | |
346 | ||
347 | /* | |
138c014d | 348 | ***************************************************************************** |
1da177e4 | 349 | * 24 byte sense ERP functions (only) |
138c014d | 350 | ***************************************************************************** |
1da177e4 LT |
351 | */ |
352 | ||
353 | /* | |
138c014d | 354 | * DASD_3990_ERP_ACTION_5 |
1da177e4 LT |
355 | * |
356 | * DESCRIPTION | |
357 | * Setup ERP to do the ERP action 5 (see Reference manual). | |
358 | * NOTE: Further handling is done in xxx_further_erp after the retries. | |
359 | * | |
360 | * PARAMETER | |
361 | * erp pointer to the current ERP | |
362 | * | |
363 | * RETURN VALUES | |
364 | * erp pointer to the ERP | |
365 | * | |
366 | */ | |
367 | static struct dasd_ccw_req * | |
368 | dasd_3990_erp_action_5(struct dasd_ccw_req * erp) | |
369 | { | |
370 | ||
371 | /* first of all retry */ | |
372 | erp->retries = 10; | |
373 | erp->function = dasd_3990_erp_action_5; | |
374 | ||
375 | return erp; | |
376 | ||
377 | } /* end dasd_3990_erp_action_5 */ | |
378 | ||
379 | /* | |
380 | * DASD_3990_HANDLE_ENV_DATA | |
381 | * | |
382 | * DESCRIPTION | |
383 | * Handles 24 byte 'Environmental data present'. | |
384 | * Does a analysis of the sense data (message Format) | |
385 | * and prints the error messages. | |
386 | * | |
387 | * PARAMETER | |
388 | * sense current sense data | |
138c014d | 389 | * |
1da177e4 LT |
390 | * RETURN VALUES |
391 | * void | |
392 | */ | |
393 | static void | |
394 | dasd_3990_handle_env_data(struct dasd_ccw_req * erp, char *sense) | |
395 | { | |
396 | ||
8e09f215 | 397 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
398 | char msg_format = (sense[7] & 0xF0); |
399 | char msg_no = (sense[7] & 0x0F); | |
fc19f381 | 400 | char errorstring[ERRORLENGTH]; |
1da177e4 LT |
401 | |
402 | switch (msg_format) { | |
403 | case 0x00: /* Format 0 - Program or System Checks */ | |
404 | ||
405 | if (sense[1] & 0x10) { /* check message to operator bit */ | |
406 | ||
407 | switch (msg_no) { | |
408 | case 0x00: /* No Message */ | |
409 | break; | |
410 | case 0x01: | |
fc19f381 SH |
411 | dev_warn(&device->cdev->dev, |
412 | "FORMAT 0 - Invalid Command\n"); | |
1da177e4 LT |
413 | break; |
414 | case 0x02: | |
fc19f381 | 415 | dev_warn(&device->cdev->dev, |
1da177e4 | 416 | "FORMAT 0 - Invalid Command " |
fc19f381 | 417 | "Sequence\n"); |
1da177e4 LT |
418 | break; |
419 | case 0x03: | |
fc19f381 | 420 | dev_warn(&device->cdev->dev, |
1da177e4 | 421 | "FORMAT 0 - CCW Count less than " |
fc19f381 | 422 | "required\n"); |
1da177e4 LT |
423 | break; |
424 | case 0x04: | |
fc19f381 SH |
425 | dev_warn(&device->cdev->dev, |
426 | "FORMAT 0 - Invalid Parameter\n"); | |
1da177e4 LT |
427 | break; |
428 | case 0x05: | |
fc19f381 SH |
429 | dev_warn(&device->cdev->dev, |
430 | "FORMAT 0 - Diagnostic of Special" | |
431 | " Command Violates File Mask\n"); | |
1da177e4 LT |
432 | break; |
433 | case 0x07: | |
fc19f381 | 434 | dev_warn(&device->cdev->dev, |
1da177e4 | 435 | "FORMAT 0 - Channel Returned with " |
fc19f381 | 436 | "Incorrect retry CCW\n"); |
1da177e4 LT |
437 | break; |
438 | case 0x08: | |
fc19f381 SH |
439 | dev_warn(&device->cdev->dev, |
440 | "FORMAT 0 - Reset Notification\n"); | |
1da177e4 LT |
441 | break; |
442 | case 0x09: | |
fc19f381 SH |
443 | dev_warn(&device->cdev->dev, |
444 | "FORMAT 0 - Storage Path Restart\n"); | |
1da177e4 LT |
445 | break; |
446 | case 0x0A: | |
fc19f381 | 447 | dev_warn(&device->cdev->dev, |
1da177e4 | 448 | "FORMAT 0 - Channel requested " |
fc19f381 | 449 | "... %02x\n", sense[8]); |
1da177e4 LT |
450 | break; |
451 | case 0x0B: | |
fc19f381 | 452 | dev_warn(&device->cdev->dev, |
1da177e4 | 453 | "FORMAT 0 - Invalid Defective/" |
fc19f381 | 454 | "Alternate Track Pointer\n"); |
1da177e4 LT |
455 | break; |
456 | case 0x0C: | |
fc19f381 | 457 | dev_warn(&device->cdev->dev, |
1da177e4 | 458 | "FORMAT 0 - DPS Installation " |
fc19f381 | 459 | "Check\n"); |
1da177e4 LT |
460 | break; |
461 | case 0x0E: | |
fc19f381 | 462 | dev_warn(&device->cdev->dev, |
1da177e4 | 463 | "FORMAT 0 - Command Invalid on " |
fc19f381 | 464 | "Secondary Address\n"); |
1da177e4 LT |
465 | break; |
466 | case 0x0F: | |
fc19f381 | 467 | dev_warn(&device->cdev->dev, |
1da177e4 | 468 | "FORMAT 0 - Status Not As " |
fc19f381 SH |
469 | "Required: reason %02x\n", |
470 | sense[8]); | |
1da177e4 LT |
471 | break; |
472 | default: | |
fc19f381 SH |
473 | dev_warn(&device->cdev->dev, |
474 | "FORMAT 0 - Reserved\n"); | |
1da177e4 LT |
475 | } |
476 | } else { | |
477 | switch (msg_no) { | |
478 | case 0x00: /* No Message */ | |
479 | break; | |
480 | case 0x01: | |
fc19f381 SH |
481 | dev_warn(&device->cdev->dev, |
482 | "FORMAT 0 - Device Error " | |
483 | "Source\n"); | |
1da177e4 LT |
484 | break; |
485 | case 0x02: | |
fc19f381 SH |
486 | dev_warn(&device->cdev->dev, |
487 | "FORMAT 0 - Reserved\n"); | |
1da177e4 LT |
488 | break; |
489 | case 0x03: | |
fc19f381 | 490 | dev_warn(&device->cdev->dev, |
1da177e4 | 491 | "FORMAT 0 - Device Fenced - " |
fc19f381 | 492 | "device = %02x\n", sense[4]); |
1da177e4 LT |
493 | break; |
494 | case 0x04: | |
fc19f381 | 495 | dev_warn(&device->cdev->dev, |
1da177e4 | 496 | "FORMAT 0 - Data Pinned for " |
fc19f381 | 497 | "Device\n"); |
1da177e4 LT |
498 | break; |
499 | default: | |
fc19f381 SH |
500 | dev_warn(&device->cdev->dev, |
501 | "FORMAT 0 - Reserved\n"); | |
1da177e4 LT |
502 | } |
503 | } | |
504 | break; | |
505 | ||
506 | case 0x10: /* Format 1 - Device Equipment Checks */ | |
507 | switch (msg_no) { | |
508 | case 0x00: /* No Message */ | |
509 | break; | |
510 | case 0x01: | |
fc19f381 | 511 | dev_warn(&device->cdev->dev, |
1da177e4 | 512 | "FORMAT 1 - Device Status 1 not as " |
fc19f381 | 513 | "expected\n"); |
1da177e4 LT |
514 | break; |
515 | case 0x03: | |
fc19f381 SH |
516 | dev_warn(&device->cdev->dev, |
517 | "FORMAT 1 - Index missing\n"); | |
1da177e4 LT |
518 | break; |
519 | case 0x04: | |
fc19f381 SH |
520 | dev_warn(&device->cdev->dev, |
521 | "FORMAT 1 - Interruption cannot be " | |
522 | "reset\n"); | |
1da177e4 LT |
523 | break; |
524 | case 0x05: | |
fc19f381 | 525 | dev_warn(&device->cdev->dev, |
1da177e4 | 526 | "FORMAT 1 - Device did not respond to " |
fc19f381 | 527 | "selection\n"); |
1da177e4 LT |
528 | break; |
529 | case 0x06: | |
fc19f381 | 530 | dev_warn(&device->cdev->dev, |
1da177e4 | 531 | "FORMAT 1 - Device check-2 error or Set " |
fc19f381 | 532 | "Sector is not complete\n"); |
1da177e4 LT |
533 | break; |
534 | case 0x07: | |
fc19f381 | 535 | dev_warn(&device->cdev->dev, |
1da177e4 | 536 | "FORMAT 1 - Head address does not " |
fc19f381 | 537 | "compare\n"); |
1da177e4 LT |
538 | break; |
539 | case 0x08: | |
fc19f381 SH |
540 | dev_warn(&device->cdev->dev, |
541 | "FORMAT 1 - Device status 1 not valid\n"); | |
1da177e4 LT |
542 | break; |
543 | case 0x09: | |
fc19f381 SH |
544 | dev_warn(&device->cdev->dev, |
545 | "FORMAT 1 - Device not ready\n"); | |
1da177e4 LT |
546 | break; |
547 | case 0x0A: | |
fc19f381 | 548 | dev_warn(&device->cdev->dev, |
1da177e4 | 549 | "FORMAT 1 - Track physical address did " |
fc19f381 | 550 | "not compare\n"); |
1da177e4 LT |
551 | break; |
552 | case 0x0B: | |
fc19f381 SH |
553 | dev_warn(&device->cdev->dev, |
554 | "FORMAT 1 - Missing device address bit\n"); | |
1da177e4 LT |
555 | break; |
556 | case 0x0C: | |
fc19f381 SH |
557 | dev_warn(&device->cdev->dev, |
558 | "FORMAT 1 - Drive motor switch is off\n"); | |
1da177e4 LT |
559 | break; |
560 | case 0x0D: | |
fc19f381 SH |
561 | dev_warn(&device->cdev->dev, |
562 | "FORMAT 1 - Seek incomplete\n"); | |
1da177e4 LT |
563 | break; |
564 | case 0x0E: | |
fc19f381 | 565 | dev_warn(&device->cdev->dev, |
1da177e4 | 566 | "FORMAT 1 - Cylinder address did not " |
fc19f381 | 567 | "compare\n"); |
1da177e4 LT |
568 | break; |
569 | case 0x0F: | |
fc19f381 | 570 | dev_warn(&device->cdev->dev, |
1da177e4 | 571 | "FORMAT 1 - Offset active cannot be " |
fc19f381 | 572 | "reset\n"); |
1da177e4 LT |
573 | break; |
574 | default: | |
fc19f381 SH |
575 | dev_warn(&device->cdev->dev, |
576 | "FORMAT 1 - Reserved\n"); | |
1da177e4 LT |
577 | } |
578 | break; | |
579 | ||
580 | case 0x20: /* Format 2 - 3990 Equipment Checks */ | |
581 | switch (msg_no) { | |
582 | case 0x08: | |
fc19f381 SH |
583 | dev_warn(&device->cdev->dev, |
584 | "FORMAT 2 - 3990 check-2 error\n"); | |
1da177e4 LT |
585 | break; |
586 | case 0x0E: | |
fc19f381 SH |
587 | dev_warn(&device->cdev->dev, |
588 | "FORMAT 2 - Support facility errors\n"); | |
1da177e4 LT |
589 | break; |
590 | case 0x0F: | |
fc19f381 SH |
591 | dev_warn(&device->cdev->dev, |
592 | "FORMAT 2 - Microcode detected error " | |
593 | "%02x\n", | |
594 | sense[8]); | |
1da177e4 LT |
595 | break; |
596 | default: | |
fc19f381 SH |
597 | dev_warn(&device->cdev->dev, |
598 | "FORMAT 2 - Reserved\n"); | |
1da177e4 LT |
599 | } |
600 | break; | |
601 | ||
602 | case 0x30: /* Format 3 - 3990 Control Checks */ | |
603 | switch (msg_no) { | |
604 | case 0x0F: | |
fc19f381 SH |
605 | dev_warn(&device->cdev->dev, |
606 | "FORMAT 3 - Allegiance terminated\n"); | |
1da177e4 LT |
607 | break; |
608 | default: | |
fc19f381 SH |
609 | dev_warn(&device->cdev->dev, |
610 | "FORMAT 3 - Reserved\n"); | |
1da177e4 LT |
611 | } |
612 | break; | |
613 | ||
614 | case 0x40: /* Format 4 - Data Checks */ | |
615 | switch (msg_no) { | |
616 | case 0x00: | |
fc19f381 SH |
617 | dev_warn(&device->cdev->dev, |
618 | "FORMAT 4 - Home address area error\n"); | |
1da177e4 LT |
619 | break; |
620 | case 0x01: | |
fc19f381 SH |
621 | dev_warn(&device->cdev->dev, |
622 | "FORMAT 4 - Count area error\n"); | |
1da177e4 LT |
623 | break; |
624 | case 0x02: | |
fc19f381 SH |
625 | dev_warn(&device->cdev->dev, |
626 | "FORMAT 4 - Key area error\n"); | |
1da177e4 LT |
627 | break; |
628 | case 0x03: | |
fc19f381 SH |
629 | dev_warn(&device->cdev->dev, |
630 | "FORMAT 4 - Data area error\n"); | |
1da177e4 LT |
631 | break; |
632 | case 0x04: | |
fc19f381 | 633 | dev_warn(&device->cdev->dev, |
1da177e4 | 634 | "FORMAT 4 - No sync byte in home address " |
fc19f381 | 635 | "area\n"); |
1da177e4 LT |
636 | break; |
637 | case 0x05: | |
fc19f381 | 638 | dev_warn(&device->cdev->dev, |
1da177e4 | 639 | "FORMAT 4 - No sync byte in count address " |
fc19f381 | 640 | "area\n"); |
1da177e4 LT |
641 | break; |
642 | case 0x06: | |
fc19f381 SH |
643 | dev_warn(&device->cdev->dev, |
644 | "FORMAT 4 - No sync byte in key area\n"); | |
1da177e4 LT |
645 | break; |
646 | case 0x07: | |
fc19f381 SH |
647 | dev_warn(&device->cdev->dev, |
648 | "FORMAT 4 - No sync byte in data area\n"); | |
1da177e4 LT |
649 | break; |
650 | case 0x08: | |
fc19f381 | 651 | dev_warn(&device->cdev->dev, |
1da177e4 | 652 | "FORMAT 4 - Home address area error; " |
fc19f381 | 653 | "offset active\n"); |
1da177e4 LT |
654 | break; |
655 | case 0x09: | |
fc19f381 | 656 | dev_warn(&device->cdev->dev, |
1da177e4 | 657 | "FORMAT 4 - Count area error; offset " |
fc19f381 | 658 | "active\n"); |
1da177e4 LT |
659 | break; |
660 | case 0x0A: | |
fc19f381 | 661 | dev_warn(&device->cdev->dev, |
1da177e4 | 662 | "FORMAT 4 - Key area error; offset " |
fc19f381 | 663 | "active\n"); |
1da177e4 LT |
664 | break; |
665 | case 0x0B: | |
fc19f381 | 666 | dev_warn(&device->cdev->dev, |
1da177e4 | 667 | "FORMAT 4 - Data area error; " |
fc19f381 | 668 | "offset active\n"); |
1da177e4 LT |
669 | break; |
670 | case 0x0C: | |
fc19f381 | 671 | dev_warn(&device->cdev->dev, |
1da177e4 | 672 | "FORMAT 4 - No sync byte in home " |
fc19f381 | 673 | "address area; offset active\n"); |
1da177e4 LT |
674 | break; |
675 | case 0x0D: | |
fc19f381 | 676 | dev_warn(&device->cdev->dev, |
1da177e4 | 677 | "FORMAT 4 - No syn byte in count " |
fc19f381 | 678 | "address area; offset active\n"); |
1da177e4 LT |
679 | break; |
680 | case 0x0E: | |
fc19f381 | 681 | dev_warn(&device->cdev->dev, |
1da177e4 | 682 | "FORMAT 4 - No sync byte in key area; " |
fc19f381 | 683 | "offset active\n"); |
1da177e4 LT |
684 | break; |
685 | case 0x0F: | |
fc19f381 | 686 | dev_warn(&device->cdev->dev, |
1da177e4 | 687 | "FORMAT 4 - No syn byte in data area; " |
fc19f381 | 688 | "offset active\n"); |
1da177e4 LT |
689 | break; |
690 | default: | |
fc19f381 SH |
691 | dev_warn(&device->cdev->dev, |
692 | "FORMAT 4 - Reserved\n"); | |
1da177e4 LT |
693 | } |
694 | break; | |
695 | ||
696 | case 0x50: /* Format 5 - Data Check with displacement information */ | |
697 | switch (msg_no) { | |
698 | case 0x00: | |
fc19f381 | 699 | dev_warn(&device->cdev->dev, |
1da177e4 | 700 | "FORMAT 5 - Data Check in the " |
fc19f381 | 701 | "home address area\n"); |
1da177e4 LT |
702 | break; |
703 | case 0x01: | |
fc19f381 SH |
704 | dev_warn(&device->cdev->dev, |
705 | "FORMAT 5 - Data Check in the count " | |
706 | "area\n"); | |
1da177e4 LT |
707 | break; |
708 | case 0x02: | |
fc19f381 SH |
709 | dev_warn(&device->cdev->dev, |
710 | "FORMAT 5 - Data Check in the key area\n"); | |
1da177e4 LT |
711 | break; |
712 | case 0x03: | |
fc19f381 SH |
713 | dev_warn(&device->cdev->dev, |
714 | "FORMAT 5 - Data Check in the data " | |
715 | "area\n"); | |
1da177e4 LT |
716 | break; |
717 | case 0x08: | |
fc19f381 | 718 | dev_warn(&device->cdev->dev, |
1da177e4 | 719 | "FORMAT 5 - Data Check in the " |
fc19f381 | 720 | "home address area; offset active\n"); |
1da177e4 LT |
721 | break; |
722 | case 0x09: | |
fc19f381 | 723 | dev_warn(&device->cdev->dev, |
1da177e4 | 724 | "FORMAT 5 - Data Check in the count area; " |
fc19f381 | 725 | "offset active\n"); |
1da177e4 LT |
726 | break; |
727 | case 0x0A: | |
fc19f381 | 728 | dev_warn(&device->cdev->dev, |
1da177e4 | 729 | "FORMAT 5 - Data Check in the key area; " |
fc19f381 | 730 | "offset active\n"); |
1da177e4 LT |
731 | break; |
732 | case 0x0B: | |
fc19f381 | 733 | dev_warn(&device->cdev->dev, |
1da177e4 | 734 | "FORMAT 5 - Data Check in the data area; " |
fc19f381 | 735 | "offset active\n"); |
1da177e4 LT |
736 | break; |
737 | default: | |
fc19f381 SH |
738 | dev_warn(&device->cdev->dev, |
739 | "FORMAT 5 - Reserved\n"); | |
1da177e4 LT |
740 | } |
741 | break; | |
742 | ||
743 | case 0x60: /* Format 6 - Usage Statistics/Overrun Errors */ | |
744 | switch (msg_no) { | |
745 | case 0x00: | |
fc19f381 SH |
746 | dev_warn(&device->cdev->dev, |
747 | "FORMAT 6 - Overrun on channel A\n"); | |
1da177e4 LT |
748 | break; |
749 | case 0x01: | |
fc19f381 SH |
750 | dev_warn(&device->cdev->dev, |
751 | "FORMAT 6 - Overrun on channel B\n"); | |
1da177e4 LT |
752 | break; |
753 | case 0x02: | |
fc19f381 SH |
754 | dev_warn(&device->cdev->dev, |
755 | "FORMAT 6 - Overrun on channel C\n"); | |
1da177e4 LT |
756 | break; |
757 | case 0x03: | |
fc19f381 SH |
758 | dev_warn(&device->cdev->dev, |
759 | "FORMAT 6 - Overrun on channel D\n"); | |
1da177e4 LT |
760 | break; |
761 | case 0x04: | |
fc19f381 SH |
762 | dev_warn(&device->cdev->dev, |
763 | "FORMAT 6 - Overrun on channel E\n"); | |
1da177e4 LT |
764 | break; |
765 | case 0x05: | |
fc19f381 SH |
766 | dev_warn(&device->cdev->dev, |
767 | "FORMAT 6 - Overrun on channel F\n"); | |
1da177e4 LT |
768 | break; |
769 | case 0x06: | |
fc19f381 SH |
770 | dev_warn(&device->cdev->dev, |
771 | "FORMAT 6 - Overrun on channel G\n"); | |
1da177e4 LT |
772 | break; |
773 | case 0x07: | |
fc19f381 SH |
774 | dev_warn(&device->cdev->dev, |
775 | "FORMAT 6 - Overrun on channel H\n"); | |
1da177e4 LT |
776 | break; |
777 | default: | |
fc19f381 SH |
778 | dev_warn(&device->cdev->dev, |
779 | "FORMAT 6 - Reserved\n"); | |
1da177e4 LT |
780 | } |
781 | break; | |
782 | ||
783 | case 0x70: /* Format 7 - Device Connection Control Checks */ | |
784 | switch (msg_no) { | |
785 | case 0x00: | |
fc19f381 | 786 | dev_warn(&device->cdev->dev, |
1da177e4 | 787 | "FORMAT 7 - RCC initiated by a connection " |
fc19f381 | 788 | "check alert\n"); |
1da177e4 LT |
789 | break; |
790 | case 0x01: | |
fc19f381 | 791 | dev_warn(&device->cdev->dev, |
1da177e4 | 792 | "FORMAT 7 - RCC 1 sequence not " |
fc19f381 | 793 | "successful\n"); |
1da177e4 LT |
794 | break; |
795 | case 0x02: | |
fc19f381 | 796 | dev_warn(&device->cdev->dev, |
1da177e4 | 797 | "FORMAT 7 - RCC 1 and RCC 2 sequences not " |
fc19f381 | 798 | "successful\n"); |
1da177e4 LT |
799 | break; |
800 | case 0x03: | |
fc19f381 | 801 | dev_warn(&device->cdev->dev, |
1da177e4 | 802 | "FORMAT 7 - Invalid tag-in during " |
fc19f381 | 803 | "selection sequence\n"); |
1da177e4 LT |
804 | break; |
805 | case 0x04: | |
fc19f381 SH |
806 | dev_warn(&device->cdev->dev, |
807 | "FORMAT 7 - extra RCC required\n"); | |
1da177e4 LT |
808 | break; |
809 | case 0x05: | |
fc19f381 | 810 | dev_warn(&device->cdev->dev, |
1da177e4 | 811 | "FORMAT 7 - Invalid DCC selection " |
fc19f381 | 812 | "response or timeout\n"); |
1da177e4 LT |
813 | break; |
814 | case 0x06: | |
fc19f381 | 815 | dev_warn(&device->cdev->dev, |
1da177e4 | 816 | "FORMAT 7 - Missing end operation; device " |
fc19f381 | 817 | "transfer complete\n"); |
1da177e4 LT |
818 | break; |
819 | case 0x07: | |
fc19f381 | 820 | dev_warn(&device->cdev->dev, |
1da177e4 | 821 | "FORMAT 7 - Missing end operation; device " |
fc19f381 | 822 | "transfer incomplete\n"); |
1da177e4 LT |
823 | break; |
824 | case 0x08: | |
fc19f381 | 825 | dev_warn(&device->cdev->dev, |
1da177e4 | 826 | "FORMAT 7 - Invalid tag-in for an " |
fc19f381 | 827 | "immediate command sequence\n"); |
1da177e4 LT |
828 | break; |
829 | case 0x09: | |
fc19f381 | 830 | dev_warn(&device->cdev->dev, |
1da177e4 | 831 | "FORMAT 7 - Invalid tag-in for an " |
fc19f381 | 832 | "extended command sequence\n"); |
1da177e4 LT |
833 | break; |
834 | case 0x0A: | |
fc19f381 | 835 | dev_warn(&device->cdev->dev, |
1da177e4 | 836 | "FORMAT 7 - 3990 microcode time out when " |
fc19f381 | 837 | "stopping selection\n"); |
1da177e4 LT |
838 | break; |
839 | case 0x0B: | |
fc19f381 | 840 | dev_warn(&device->cdev->dev, |
1da177e4 | 841 | "FORMAT 7 - No response to selection " |
fc19f381 | 842 | "after a poll interruption\n"); |
1da177e4 LT |
843 | break; |
844 | case 0x0C: | |
fc19f381 | 845 | dev_warn(&device->cdev->dev, |
1da177e4 | 846 | "FORMAT 7 - Permanent path error (DASD " |
fc19f381 | 847 | "controller not available)\n"); |
1da177e4 LT |
848 | break; |
849 | case 0x0D: | |
fc19f381 | 850 | dev_warn(&device->cdev->dev, |
1da177e4 | 851 | "FORMAT 7 - DASD controller not available" |
fc19f381 | 852 | " on disconnected command chain\n"); |
1da177e4 LT |
853 | break; |
854 | default: | |
fc19f381 SH |
855 | dev_warn(&device->cdev->dev, |
856 | "FORMAT 7 - Reserved\n"); | |
1da177e4 LT |
857 | } |
858 | break; | |
859 | ||
860 | case 0x80: /* Format 8 - Additional Device Equipment Checks */ | |
861 | switch (msg_no) { | |
862 | case 0x00: /* No Message */ | |
863 | case 0x01: | |
fc19f381 | 864 | dev_warn(&device->cdev->dev, |
1da177e4 | 865 | "FORMAT 8 - Error correction code " |
fc19f381 | 866 | "hardware fault\n"); |
1da177e4 LT |
867 | break; |
868 | case 0x03: | |
fc19f381 | 869 | dev_warn(&device->cdev->dev, |
1da177e4 | 870 | "FORMAT 8 - Unexpected end operation " |
fc19f381 | 871 | "response code\n"); |
1da177e4 LT |
872 | break; |
873 | case 0x04: | |
fc19f381 | 874 | dev_warn(&device->cdev->dev, |
1da177e4 | 875 | "FORMAT 8 - End operation with transfer " |
fc19f381 | 876 | "count not zero\n"); |
1da177e4 LT |
877 | break; |
878 | case 0x05: | |
fc19f381 | 879 | dev_warn(&device->cdev->dev, |
1da177e4 | 880 | "FORMAT 8 - End operation with transfer " |
fc19f381 | 881 | "count zero\n"); |
1da177e4 LT |
882 | break; |
883 | case 0x06: | |
fc19f381 | 884 | dev_warn(&device->cdev->dev, |
1da177e4 | 885 | "FORMAT 8 - DPS checks after a system " |
fc19f381 | 886 | "reset or selective reset\n"); |
1da177e4 LT |
887 | break; |
888 | case 0x07: | |
fc19f381 SH |
889 | dev_warn(&device->cdev->dev, |
890 | "FORMAT 8 - DPS cannot be filled\n"); | |
1da177e4 LT |
891 | break; |
892 | case 0x08: | |
fc19f381 | 893 | dev_warn(&device->cdev->dev, |
1da177e4 | 894 | "FORMAT 8 - Short busy time-out during " |
fc19f381 | 895 | "device selection\n"); |
1da177e4 LT |
896 | break; |
897 | case 0x09: | |
fc19f381 | 898 | dev_warn(&device->cdev->dev, |
1da177e4 | 899 | "FORMAT 8 - DASD controller failed to " |
fc19f381 | 900 | "set or reset the long busy latch\n"); |
1da177e4 LT |
901 | break; |
902 | case 0x0A: | |
fc19f381 | 903 | dev_warn(&device->cdev->dev, |
1da177e4 | 904 | "FORMAT 8 - No interruption from device " |
fc19f381 | 905 | "during a command chain\n"); |
1da177e4 LT |
906 | break; |
907 | default: | |
fc19f381 SH |
908 | dev_warn(&device->cdev->dev, |
909 | "FORMAT 8 - Reserved\n"); | |
1da177e4 LT |
910 | } |
911 | break; | |
912 | ||
913 | case 0x90: /* Format 9 - Device Read, Write, and Seek Checks */ | |
914 | switch (msg_no) { | |
915 | case 0x00: | |
916 | break; /* No Message */ | |
917 | case 0x06: | |
fc19f381 SH |
918 | dev_warn(&device->cdev->dev, |
919 | "FORMAT 9 - Device check-2 error\n"); | |
1da177e4 LT |
920 | break; |
921 | case 0x07: | |
fc19f381 SH |
922 | dev_warn(&device->cdev->dev, |
923 | "FORMAT 9 - Head address did not " | |
924 | "compare\n"); | |
1da177e4 LT |
925 | break; |
926 | case 0x0A: | |
fc19f381 | 927 | dev_warn(&device->cdev->dev, |
1da177e4 | 928 | "FORMAT 9 - Track physical address did " |
fc19f381 | 929 | "not compare while oriented\n"); |
1da177e4 LT |
930 | break; |
931 | case 0x0E: | |
fc19f381 | 932 | dev_warn(&device->cdev->dev, |
1da177e4 | 933 | "FORMAT 9 - Cylinder address did not " |
fc19f381 | 934 | "compare\n"); |
1da177e4 LT |
935 | break; |
936 | default: | |
fc19f381 SH |
937 | dev_warn(&device->cdev->dev, |
938 | "FORMAT 9 - Reserved\n"); | |
1da177e4 LT |
939 | } |
940 | break; | |
941 | ||
942 | case 0xF0: /* Format F - Cache Storage Checks */ | |
943 | switch (msg_no) { | |
944 | case 0x00: | |
fc19f381 SH |
945 | dev_warn(&device->cdev->dev, |
946 | "FORMAT F - Operation Terminated\n"); | |
1da177e4 LT |
947 | break; |
948 | case 0x01: | |
fc19f381 SH |
949 | dev_warn(&device->cdev->dev, |
950 | "FORMAT F - Subsystem Processing Error\n"); | |
1da177e4 LT |
951 | break; |
952 | case 0x02: | |
fc19f381 | 953 | dev_warn(&device->cdev->dev, |
1da177e4 | 954 | "FORMAT F - Cache or nonvolatile storage " |
fc19f381 | 955 | "equipment failure\n"); |
1da177e4 LT |
956 | break; |
957 | case 0x04: | |
fc19f381 SH |
958 | dev_warn(&device->cdev->dev, |
959 | "FORMAT F - Caching terminated\n"); | |
1da177e4 LT |
960 | break; |
961 | case 0x06: | |
fc19f381 | 962 | dev_warn(&device->cdev->dev, |
1da177e4 | 963 | "FORMAT F - Cache fast write access not " |
fc19f381 | 964 | "authorized\n"); |
1da177e4 LT |
965 | break; |
966 | case 0x07: | |
fc19f381 SH |
967 | dev_warn(&device->cdev->dev, |
968 | "FORMAT F - Track format incorrect\n"); | |
1da177e4 LT |
969 | break; |
970 | case 0x09: | |
fc19f381 SH |
971 | dev_warn(&device->cdev->dev, |
972 | "FORMAT F - Caching reinitiated\n"); | |
1da177e4 LT |
973 | break; |
974 | case 0x0A: | |
fc19f381 | 975 | dev_warn(&device->cdev->dev, |
1da177e4 | 976 | "FORMAT F - Nonvolatile storage " |
fc19f381 | 977 | "terminated\n"); |
1da177e4 LT |
978 | break; |
979 | case 0x0B: | |
fc19f381 SH |
980 | dev_warn(&device->cdev->dev, |
981 | "FORMAT F - Volume is suspended duplex\n"); | |
20c64468 SW |
982 | /* call extended error reporting (EER) */ |
983 | dasd_eer_write(device, erp->refers, | |
984 | DASD_EER_PPRCSUSPEND); | |
1da177e4 LT |
985 | break; |
986 | case 0x0C: | |
fc19f381 SH |
987 | dev_warn(&device->cdev->dev, |
988 | "FORMAT F - Subsystem status cannot be " | |
989 | "determined\n"); | |
1da177e4 LT |
990 | break; |
991 | case 0x0D: | |
fc19f381 | 992 | dev_warn(&device->cdev->dev, |
1da177e4 | 993 | "FORMAT F - Caching status reset to " |
fc19f381 | 994 | "default\n"); |
1da177e4 LT |
995 | break; |
996 | case 0x0E: | |
fc19f381 SH |
997 | dev_warn(&device->cdev->dev, |
998 | "FORMAT F - DASD Fast Write inhibited\n"); | |
1da177e4 LT |
999 | break; |
1000 | default: | |
fc19f381 SH |
1001 | dev_warn(&device->cdev->dev, |
1002 | "FORMAT D - Reserved\n"); | |
1da177e4 LT |
1003 | } |
1004 | break; | |
1005 | ||
fc19f381 SH |
1006 | default: /* unknown message format - should not happen |
1007 | internal error 03 - unknown message format */ | |
1008 | snprintf(errorstring, ERRORLENGTH, "03 %x02", msg_format); | |
1009 | dev_err(&device->cdev->dev, | |
1010 | "An error occurred in the DASD device driver, " | |
1011 | "reason=%s\n", errorstring); | |
1da177e4 LT |
1012 | break; |
1013 | } /* end switch message format */ | |
1014 | ||
1015 | } /* end dasd_3990_handle_env_data */ | |
1016 | ||
1017 | /* | |
1018 | * DASD_3990_ERP_COM_REJ | |
1019 | * | |
1020 | * DESCRIPTION | |
1021 | * Handles 24 byte 'Command Reject' error. | |
1022 | * | |
1023 | * PARAMETER | |
1024 | * erp current erp_head | |
1025 | * sense current sense data | |
138c014d | 1026 | * |
1da177e4 | 1027 | * RETURN VALUES |
138c014d | 1028 | * erp 'new' erp_head - pointer to new ERP |
1da177e4 LT |
1029 | */ |
1030 | static struct dasd_ccw_req * | |
1031 | dasd_3990_erp_com_rej(struct dasd_ccw_req * erp, char *sense) | |
1032 | { | |
1033 | ||
8e09f215 | 1034 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1035 | |
1036 | erp->function = dasd_3990_erp_com_rej; | |
1037 | ||
1038 | /* env data present (ACTION 10 - retry should work) */ | |
1039 | if (sense[2] & SNS2_ENV_DATA_PRESENT) { | |
1040 | ||
fc19f381 | 1041 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1042 | "Command Reject - environmental data present"); |
1043 | ||
1044 | dasd_3990_handle_env_data(erp, sense); | |
1045 | ||
1046 | erp->retries = 5; | |
1047 | ||
1048 | } else { | |
fc19f381 SH |
1049 | /* fatal error - set status to FAILED |
1050 | internal error 09 - Command Reject */ | |
1051 | dev_err(&device->cdev->dev, "An error occurred in the DASD " | |
1052 | "device driver, reason=%s\n", "09"); | |
1da177e4 LT |
1053 | |
1054 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
1055 | } | |
1056 | ||
1057 | return erp; | |
1058 | ||
1059 | } /* end dasd_3990_erp_com_rej */ | |
1060 | ||
1061 | /* | |
138c014d | 1062 | * DASD_3990_ERP_BUS_OUT |
1da177e4 LT |
1063 | * |
1064 | * DESCRIPTION | |
1065 | * Handles 24 byte 'Bus Out Parity Check' error. | |
1066 | * | |
1067 | * PARAMETER | |
1068 | * erp current erp_head | |
1069 | * RETURN VALUES | |
1070 | * erp new erp_head - pointer to new ERP | |
1071 | */ | |
1072 | static struct dasd_ccw_req * | |
1073 | dasd_3990_erp_bus_out(struct dasd_ccw_req * erp) | |
1074 | { | |
1075 | ||
8e09f215 | 1076 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1077 | |
1078 | /* first time set initial retry counter and erp_function */ | |
1079 | /* and retry once without blocking queue */ | |
1080 | /* (this enables easier enqueing of the cqr) */ | |
1081 | if (erp->function != dasd_3990_erp_bus_out) { | |
1082 | erp->retries = 256; | |
1083 | erp->function = dasd_3990_erp_bus_out; | |
1084 | ||
1085 | } else { | |
1086 | ||
1087 | /* issue a message and wait for 'device ready' interrupt */ | |
fc19f381 | 1088 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1089 | "bus out parity error or BOPC requested by " |
1090 | "channel"); | |
1091 | ||
1092 | dasd_3990_erp_block_queue(erp, 60*HZ); | |
1093 | ||
1094 | } | |
1095 | ||
1096 | return erp; | |
1097 | ||
1098 | } /* end dasd_3990_erp_bus_out */ | |
1099 | ||
1100 | /* | |
1101 | * DASD_3990_ERP_EQUIP_CHECK | |
1102 | * | |
1103 | * DESCRIPTION | |
1104 | * Handles 24 byte 'Equipment Check' error. | |
1105 | * | |
1106 | * PARAMETER | |
1107 | * erp current erp_head | |
1108 | * RETURN VALUES | |
1109 | * erp new erp_head - pointer to new ERP | |
1110 | */ | |
1111 | static struct dasd_ccw_req * | |
1112 | dasd_3990_erp_equip_check(struct dasd_ccw_req * erp, char *sense) | |
1113 | { | |
1114 | ||
8e09f215 | 1115 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1116 | |
1117 | erp->function = dasd_3990_erp_equip_check; | |
1118 | ||
1119 | if (sense[1] & SNS1_WRITE_INHIBITED) { | |
fc19f381 SH |
1120 | dev_info(&device->cdev->dev, |
1121 | "Write inhibited path encountered\n"); | |
1da177e4 | 1122 | |
fc19f381 SH |
1123 | /* vary path offline |
1124 | internal error 04 - Path should be varied off-line.*/ | |
1125 | dev_err(&device->cdev->dev, "An error occurred in the DASD " | |
1126 | "device driver, reason=%s\n", "04"); | |
1da177e4 LT |
1127 | |
1128 | erp = dasd_3990_erp_action_1(erp); | |
1129 | ||
1130 | } else if (sense[2] & SNS2_ENV_DATA_PRESENT) { | |
1131 | ||
fc19f381 | 1132 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1133 | "Equipment Check - " "environmental data present"); |
1134 | ||
1135 | dasd_3990_handle_env_data(erp, sense); | |
1136 | ||
1137 | erp = dasd_3990_erp_action_4(erp, sense); | |
1138 | ||
1139 | } else if (sense[1] & SNS1_PERM_ERR) { | |
1140 | ||
fc19f381 | 1141 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1142 | "Equipment Check - retry exhausted or " |
1143 | "undesirable"); | |
1144 | ||
1145 | erp = dasd_3990_erp_action_1(erp); | |
1146 | ||
1147 | } else { | |
1148 | /* all other equipment checks - Action 5 */ | |
1149 | /* rest is done when retries == 0 */ | |
fc19f381 | 1150 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1151 | "Equipment check or processing error"); |
1152 | ||
1153 | erp = dasd_3990_erp_action_5(erp); | |
1154 | } | |
1da177e4 LT |
1155 | return erp; |
1156 | ||
1157 | } /* end dasd_3990_erp_equip_check */ | |
1158 | ||
1159 | /* | |
1160 | * DASD_3990_ERP_DATA_CHECK | |
1161 | * | |
1162 | * DESCRIPTION | |
1163 | * Handles 24 byte 'Data Check' error. | |
1164 | * | |
1165 | * PARAMETER | |
1166 | * erp current erp_head | |
1167 | * RETURN VALUES | |
1168 | * erp new erp_head - pointer to new ERP | |
1169 | */ | |
1170 | static struct dasd_ccw_req * | |
1171 | dasd_3990_erp_data_check(struct dasd_ccw_req * erp, char *sense) | |
1172 | { | |
1173 | ||
8e09f215 | 1174 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1175 | |
1176 | erp->function = dasd_3990_erp_data_check; | |
1177 | ||
1178 | if (sense[2] & SNS2_CORRECTABLE) { /* correctable data check */ | |
1179 | ||
1180 | /* issue message that the data has been corrected */ | |
fc19f381 | 1181 | dev_emerg(&device->cdev->dev, |
1da177e4 | 1182 | "Data recovered during retry with PCI " |
fc19f381 | 1183 | "fetch mode active\n"); |
1da177e4 LT |
1184 | |
1185 | /* not possible to handle this situation in Linux */ | |
1186 | panic("No way to inform application about the possibly " | |
1187 | "incorrect data"); | |
1188 | ||
1189 | } else if (sense[2] & SNS2_ENV_DATA_PRESENT) { | |
1190 | ||
fc19f381 | 1191 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1192 | "Uncorrectable data check recovered secondary " |
1193 | "addr of duplex pair"); | |
1194 | ||
1195 | erp = dasd_3990_erp_action_4(erp, sense); | |
1196 | ||
1197 | } else if (sense[1] & SNS1_PERM_ERR) { | |
1198 | ||
fc19f381 | 1199 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1200 | "Uncorrectable data check with internal " |
1201 | "retry exhausted"); | |
1202 | ||
1203 | erp = dasd_3990_erp_action_1(erp); | |
1204 | ||
1205 | } else { | |
1206 | /* all other data checks */ | |
fc19f381 | 1207 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1208 | "Uncorrectable data check with retry count " |
1209 | "exhausted..."); | |
1210 | ||
1211 | erp = dasd_3990_erp_action_5(erp); | |
1212 | } | |
1213 | ||
1214 | return erp; | |
1215 | ||
1216 | } /* end dasd_3990_erp_data_check */ | |
1217 | ||
1218 | /* | |
1219 | * DASD_3990_ERP_OVERRUN | |
1220 | * | |
1221 | * DESCRIPTION | |
1222 | * Handles 24 byte 'Overrun' error. | |
1223 | * | |
1224 | * PARAMETER | |
1225 | * erp current erp_head | |
1226 | * RETURN VALUES | |
1227 | * erp new erp_head - pointer to new ERP | |
1228 | */ | |
1229 | static struct dasd_ccw_req * | |
1230 | dasd_3990_erp_overrun(struct dasd_ccw_req * erp, char *sense) | |
1231 | { | |
1232 | ||
8e09f215 | 1233 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1234 | |
1235 | erp->function = dasd_3990_erp_overrun; | |
1236 | ||
fc19f381 | 1237 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1238 | "Overrun - service overrun or overrun" |
1239 | " error requested by channel"); | |
1240 | ||
1241 | erp = dasd_3990_erp_action_5(erp); | |
1242 | ||
1243 | return erp; | |
1244 | ||
1245 | } /* end dasd_3990_erp_overrun */ | |
1246 | ||
1247 | /* | |
1248 | * DASD_3990_ERP_INV_FORMAT | |
1249 | * | |
1250 | * DESCRIPTION | |
1251 | * Handles 24 byte 'Invalid Track Format' error. | |
1252 | * | |
1253 | * PARAMETER | |
1254 | * erp current erp_head | |
1255 | * RETURN VALUES | |
1256 | * erp new erp_head - pointer to new ERP | |
1257 | */ | |
1258 | static struct dasd_ccw_req * | |
1259 | dasd_3990_erp_inv_format(struct dasd_ccw_req * erp, char *sense) | |
1260 | { | |
1261 | ||
8e09f215 | 1262 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1263 | |
1264 | erp->function = dasd_3990_erp_inv_format; | |
1265 | ||
1266 | if (sense[2] & SNS2_ENV_DATA_PRESENT) { | |
1267 | ||
fc19f381 | 1268 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1269 | "Track format error when destaging or " |
1270 | "staging data"); | |
1271 | ||
1272 | dasd_3990_handle_env_data(erp, sense); | |
1273 | ||
1274 | erp = dasd_3990_erp_action_4(erp, sense); | |
1275 | ||
1276 | } else { | |
fc19f381 SH |
1277 | /* internal error 06 - The track format is not valid*/ |
1278 | dev_err(&device->cdev->dev, | |
1279 | "An error occurred in the DASD device driver, " | |
1280 | "reason=%s\n", "06"); | |
1da177e4 LT |
1281 | |
1282 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
1283 | } | |
1284 | ||
1285 | return erp; | |
1286 | ||
1287 | } /* end dasd_3990_erp_inv_format */ | |
1288 | ||
1289 | /* | |
1290 | * DASD_3990_ERP_EOC | |
1291 | * | |
1292 | * DESCRIPTION | |
1293 | * Handles 24 byte 'End-of-Cylinder' error. | |
1294 | * | |
1295 | * PARAMETER | |
1296 | * erp already added default erp | |
1297 | * RETURN VALUES | |
1298 | * erp pointer to original (failed) cqr. | |
1299 | */ | |
1300 | static struct dasd_ccw_req * | |
1301 | dasd_3990_erp_EOC(struct dasd_ccw_req * default_erp, char *sense) | |
1302 | { | |
1303 | ||
8e09f215 | 1304 | struct dasd_device *device = default_erp->startdev; |
1da177e4 | 1305 | |
fc19f381 SH |
1306 | dev_err(&device->cdev->dev, |
1307 | "The cylinder data for accessing the DASD is inconsistent\n"); | |
1da177e4 LT |
1308 | |
1309 | /* implement action 7 - BUG */ | |
1310 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); | |
1311 | ||
1312 | } /* end dasd_3990_erp_EOC */ | |
1313 | ||
1314 | /* | |
1315 | * DASD_3990_ERP_ENV_DATA | |
1316 | * | |
1317 | * DESCRIPTION | |
1318 | * Handles 24 byte 'Environmental-Data Present' error. | |
1319 | * | |
1320 | * PARAMETER | |
1321 | * erp current erp_head | |
1322 | * RETURN VALUES | |
1323 | * erp new erp_head - pointer to new ERP | |
1324 | */ | |
1325 | static struct dasd_ccw_req * | |
1326 | dasd_3990_erp_env_data(struct dasd_ccw_req * erp, char *sense) | |
1327 | { | |
1328 | ||
8e09f215 | 1329 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1330 | |
1331 | erp->function = dasd_3990_erp_env_data; | |
1332 | ||
fc19f381 | 1333 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", "Environmental data present"); |
1da177e4 LT |
1334 | |
1335 | dasd_3990_handle_env_data(erp, sense); | |
1336 | ||
1337 | /* don't retry on disabled interface */ | |
1338 | if (sense[7] != 0x0F) { | |
1da177e4 LT |
1339 | erp = dasd_3990_erp_action_4(erp, sense); |
1340 | } else { | |
8e09f215 | 1341 | erp->status = DASD_CQR_FILLED; |
1da177e4 LT |
1342 | } |
1343 | ||
1344 | return erp; | |
1345 | ||
1346 | } /* end dasd_3990_erp_env_data */ | |
1347 | ||
1348 | /* | |
1349 | * DASD_3990_ERP_NO_REC | |
1350 | * | |
1351 | * DESCRIPTION | |
1352 | * Handles 24 byte 'No Record Found' error. | |
1353 | * | |
1354 | * PARAMETER | |
1355 | * erp already added default ERP | |
138c014d | 1356 | * |
1da177e4 LT |
1357 | * RETURN VALUES |
1358 | * erp new erp_head - pointer to new ERP | |
1359 | */ | |
1360 | static struct dasd_ccw_req * | |
1361 | dasd_3990_erp_no_rec(struct dasd_ccw_req * default_erp, char *sense) | |
1362 | { | |
1363 | ||
8e09f215 | 1364 | struct dasd_device *device = default_erp->startdev; |
1da177e4 | 1365 | |
fc19f381 SH |
1366 | dev_err(&device->cdev->dev, |
1367 | "The specified record was not found\n"); | |
1da177e4 LT |
1368 | |
1369 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); | |
1370 | ||
1371 | } /* end dasd_3990_erp_no_rec */ | |
1372 | ||
1373 | /* | |
1374 | * DASD_3990_ERP_FILE_PROT | |
1375 | * | |
1376 | * DESCRIPTION | |
1377 | * Handles 24 byte 'File Protected' error. | |
1378 | * Note: Seek related recovery is not implemented because | |
1379 | * wee don't use the seek command yet. | |
1380 | * | |
1381 | * PARAMETER | |
1382 | * erp current erp_head | |
1383 | * RETURN VALUES | |
1384 | * erp new erp_head - pointer to new ERP | |
1385 | */ | |
1386 | static struct dasd_ccw_req * | |
1387 | dasd_3990_erp_file_prot(struct dasd_ccw_req * erp) | |
1388 | { | |
1389 | ||
8e09f215 | 1390 | struct dasd_device *device = erp->startdev; |
1da177e4 | 1391 | |
fc19f381 SH |
1392 | dev_err(&device->cdev->dev, "Accessing the DASD failed because of " |
1393 | "a hardware error\n"); | |
1da177e4 LT |
1394 | |
1395 | return dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
1396 | ||
1397 | } /* end dasd_3990_erp_file_prot */ | |
1398 | ||
8e09f215 SW |
1399 | /* |
1400 | * DASD_3990_ERP_INSPECT_ALIAS | |
1401 | * | |
1402 | * DESCRIPTION | |
1403 | * Checks if the original request was started on an alias device. | |
1404 | * If yes, it modifies the original and the erp request so that | |
1405 | * the erp request can be started on a base device. | |
1406 | * | |
1407 | * PARAMETER | |
1408 | * erp pointer to the currently created default ERP | |
1409 | * | |
1410 | * RETURN VALUES | |
1411 | * erp pointer to the modified ERP, or NULL | |
1412 | */ | |
1413 | ||
1414 | static struct dasd_ccw_req *dasd_3990_erp_inspect_alias( | |
1415 | struct dasd_ccw_req *erp) | |
1416 | { | |
1417 | struct dasd_ccw_req *cqr = erp->refers; | |
1418 | ||
1419 | if (cqr->block && | |
1420 | (cqr->block->base != cqr->startdev)) { | |
1421 | if (cqr->startdev->features & DASD_FEATURE_ERPLOG) { | |
fc19f381 | 1422 | DBF_DEV_EVENT(DBF_ERR, cqr->startdev, |
8e09f215 SW |
1423 | "ERP on alias device for request %p," |
1424 | " recover on base device %s", cqr, | |
2a0217d5 | 1425 | dev_name(&cqr->block->base->cdev->dev)); |
8e09f215 SW |
1426 | } |
1427 | dasd_eckd_reset_ccw_to_base_io(cqr); | |
1428 | erp->startdev = cqr->block->base; | |
1429 | erp->function = dasd_3990_erp_inspect_alias; | |
1430 | return erp; | |
1431 | } else | |
1432 | return NULL; | |
1433 | } | |
1434 | ||
1435 | ||
1da177e4 | 1436 | /* |
138c014d | 1437 | * DASD_3990_ERP_INSPECT_24 |
1da177e4 LT |
1438 | * |
1439 | * DESCRIPTION | |
1440 | * Does a detailed inspection of the 24 byte sense data | |
138c014d | 1441 | * and sets up a related error recovery action. |
1da177e4 LT |
1442 | * |
1443 | * PARAMETER | |
1444 | * sense sense data of the actual error | |
1445 | * erp pointer to the currently created default ERP | |
1446 | * | |
1447 | * RETURN VALUES | |
1448 | * erp pointer to the (addtitional) ERP | |
1449 | */ | |
1450 | static struct dasd_ccw_req * | |
1451 | dasd_3990_erp_inspect_24(struct dasd_ccw_req * erp, char *sense) | |
1452 | { | |
1453 | ||
1454 | struct dasd_ccw_req *erp_filled = NULL; | |
1455 | ||
1456 | /* Check sense for .... */ | |
1457 | /* 'Command Reject' */ | |
1458 | if ((erp_filled == NULL) && (sense[0] & SNS0_CMD_REJECT)) { | |
1459 | erp_filled = dasd_3990_erp_com_rej(erp, sense); | |
1460 | } | |
1461 | /* 'Intervention Required' */ | |
1462 | if ((erp_filled == NULL) && (sense[0] & SNS0_INTERVENTION_REQ)) { | |
1463 | erp_filled = dasd_3990_erp_int_req(erp); | |
1464 | } | |
1465 | /* 'Bus Out Parity Check' */ | |
1466 | if ((erp_filled == NULL) && (sense[0] & SNS0_BUS_OUT_CHECK)) { | |
1467 | erp_filled = dasd_3990_erp_bus_out(erp); | |
1468 | } | |
1469 | /* 'Equipment Check' */ | |
1470 | if ((erp_filled == NULL) && (sense[0] & SNS0_EQUIPMENT_CHECK)) { | |
1471 | erp_filled = dasd_3990_erp_equip_check(erp, sense); | |
1472 | } | |
1473 | /* 'Data Check' */ | |
1474 | if ((erp_filled == NULL) && (sense[0] & SNS0_DATA_CHECK)) { | |
1475 | erp_filled = dasd_3990_erp_data_check(erp, sense); | |
1476 | } | |
1477 | /* 'Overrun' */ | |
1478 | if ((erp_filled == NULL) && (sense[0] & SNS0_OVERRUN)) { | |
1479 | erp_filled = dasd_3990_erp_overrun(erp, sense); | |
1480 | } | |
1481 | /* 'Invalid Track Format' */ | |
1482 | if ((erp_filled == NULL) && (sense[1] & SNS1_INV_TRACK_FORMAT)) { | |
1483 | erp_filled = dasd_3990_erp_inv_format(erp, sense); | |
1484 | } | |
1485 | /* 'End-of-Cylinder' */ | |
1486 | if ((erp_filled == NULL) && (sense[1] & SNS1_EOC)) { | |
1487 | erp_filled = dasd_3990_erp_EOC(erp, sense); | |
1488 | } | |
1489 | /* 'Environmental Data' */ | |
1490 | if ((erp_filled == NULL) && (sense[2] & SNS2_ENV_DATA_PRESENT)) { | |
1491 | erp_filled = dasd_3990_erp_env_data(erp, sense); | |
1492 | } | |
1493 | /* 'No Record Found' */ | |
1494 | if ((erp_filled == NULL) && (sense[1] & SNS1_NO_REC_FOUND)) { | |
1495 | erp_filled = dasd_3990_erp_no_rec(erp, sense); | |
1496 | } | |
1497 | /* 'File Protected' */ | |
1498 | if ((erp_filled == NULL) && (sense[1] & SNS1_FILE_PROTECTED)) { | |
1499 | erp_filled = dasd_3990_erp_file_prot(erp); | |
1500 | } | |
1501 | /* other (unknown) error - do default ERP */ | |
1502 | if (erp_filled == NULL) { | |
1503 | ||
1504 | erp_filled = erp; | |
1505 | } | |
1506 | ||
1507 | return erp_filled; | |
1508 | ||
1509 | } /* END dasd_3990_erp_inspect_24 */ | |
1510 | ||
1511 | /* | |
138c014d | 1512 | ***************************************************************************** |
1da177e4 | 1513 | * 32 byte sense ERP functions (only) |
138c014d | 1514 | ***************************************************************************** |
1da177e4 LT |
1515 | */ |
1516 | ||
1517 | /* | |
138c014d | 1518 | * DASD_3990_ERPACTION_10_32 |
1da177e4 LT |
1519 | * |
1520 | * DESCRIPTION | |
1521 | * Handles 32 byte 'Action 10' of Single Program Action Codes. | |
1522 | * Just retry and if retry doesn't work, return with error. | |
1523 | * | |
1524 | * PARAMETER | |
1525 | * erp current erp_head | |
138c014d | 1526 | * sense current sense data |
1da177e4 LT |
1527 | * RETURN VALUES |
1528 | * erp modified erp_head | |
1529 | */ | |
1530 | static struct dasd_ccw_req * | |
1531 | dasd_3990_erp_action_10_32(struct dasd_ccw_req * erp, char *sense) | |
1532 | { | |
1533 | ||
8e09f215 | 1534 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1535 | |
1536 | erp->retries = 256; | |
1537 | erp->function = dasd_3990_erp_action_10_32; | |
1538 | ||
fc19f381 | 1539 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", "Perform logging requested"); |
1da177e4 LT |
1540 | |
1541 | return erp; | |
1542 | ||
1543 | } /* end dasd_3990_erp_action_10_32 */ | |
1544 | ||
1545 | /* | |
1546 | * DASD_3990_ERP_ACTION_1B_32 | |
1547 | * | |
1548 | * DESCRIPTION | |
1549 | * Handles 32 byte 'Action 1B' of Single Program Action Codes. | |
138c014d | 1550 | * A write operation could not be finished because of an unexpected |
1da177e4 | 1551 | * condition. |
138c014d HH |
1552 | * The already created 'default erp' is used to get the link to |
1553 | * the erp chain, but it can not be used for this recovery | |
1da177e4 LT |
1554 | * action because it contains no DE/LO data space. |
1555 | * | |
1556 | * PARAMETER | |
1557 | * default_erp already added default erp. | |
138c014d | 1558 | * sense current sense data |
1da177e4 LT |
1559 | * |
1560 | * RETURN VALUES | |
138c014d | 1561 | * erp new erp or |
1da177e4 LT |
1562 | * default_erp in case of imprecise ending or error |
1563 | */ | |
1564 | static struct dasd_ccw_req * | |
1565 | dasd_3990_erp_action_1B_32(struct dasd_ccw_req * default_erp, char *sense) | |
1566 | { | |
1567 | ||
8e09f215 | 1568 | struct dasd_device *device = default_erp->startdev; |
1da177e4 LT |
1569 | __u32 cpa = 0; |
1570 | struct dasd_ccw_req *cqr; | |
1571 | struct dasd_ccw_req *erp; | |
1572 | struct DE_eckd_data *DE_data; | |
8e09f215 | 1573 | struct PFX_eckd_data *PFX_data; |
1da177e4 | 1574 | char *LO_data; /* LO_eckd_data_t */ |
8e09f215 | 1575 | struct ccw1 *ccw, *oldccw; |
1da177e4 | 1576 | |
fc19f381 | 1577 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1578 | "Write not finished because of unexpected condition"); |
1579 | ||
1580 | default_erp->function = dasd_3990_erp_action_1B_32; | |
1581 | ||
1582 | /* determine the original cqr */ | |
1583 | cqr = default_erp; | |
1584 | ||
1585 | while (cqr->refers != NULL) { | |
1586 | cqr = cqr->refers; | |
1587 | } | |
1588 | ||
f3eb5384 SW |
1589 | if (scsw_is_tm(&cqr->irb.scsw)) { |
1590 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", | |
1591 | "32 bit sense, action 1B is not defined" | |
1592 | " in transport mode - just retry"); | |
1593 | return default_erp; | |
1594 | } | |
1595 | ||
1da177e4 LT |
1596 | /* for imprecise ending just do default erp */ |
1597 | if (sense[1] & 0x01) { | |
fc19f381 | 1598 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1599 | "Imprecise ending is set - just retry"); |
1600 | ||
1601 | return default_erp; | |
1602 | } | |
1603 | ||
1604 | /* determine the address of the CCW to be restarted */ | |
1605 | /* Imprecise ending is not set -> addr from IRB-SCSW */ | |
23d805b6 | 1606 | cpa = default_erp->refers->irb.scsw.cmd.cpa; |
1da177e4 LT |
1607 | |
1608 | if (cpa == 0) { | |
fc19f381 | 1609 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1610 | "Unable to determine address of the CCW " |
1611 | "to be restarted"); | |
1612 | ||
1613 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); | |
1614 | } | |
1615 | ||
1616 | /* Build new ERP request including DE/LO */ | |
1617 | erp = dasd_alloc_erp_request((char *) &cqr->magic, | |
1618 | 2 + 1,/* DE/LO + TIC */ | |
8e09f215 SW |
1619 | sizeof(struct DE_eckd_data) + |
1620 | sizeof(struct LO_eckd_data), device); | |
1da177e4 LT |
1621 | |
1622 | if (IS_ERR(erp)) { | |
fc19f381 SH |
1623 | /* internal error 01 - Unable to allocate ERP */ |
1624 | dev_err(&device->cdev->dev, "An error occurred in the DASD " | |
1625 | "device driver, reason=%s\n", "01"); | |
1da177e4 LT |
1626 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); |
1627 | } | |
1628 | ||
1629 | /* use original DE */ | |
1630 | DE_data = erp->data; | |
8e09f215 SW |
1631 | oldccw = cqr->cpaddr; |
1632 | if (oldccw->cmd_code == DASD_ECKD_CCW_PFX) { | |
1633 | PFX_data = cqr->data; | |
f3eb5384 | 1634 | memcpy(DE_data, &PFX_data->define_extent, |
8e09f215 SW |
1635 | sizeof(struct DE_eckd_data)); |
1636 | } else | |
1637 | memcpy(DE_data, cqr->data, sizeof(struct DE_eckd_data)); | |
1da177e4 LT |
1638 | |
1639 | /* create LO */ | |
8e09f215 | 1640 | LO_data = erp->data + sizeof(struct DE_eckd_data); |
1da177e4 LT |
1641 | |
1642 | if ((sense[3] == 0x01) && (LO_data[1] & 0x01)) { | |
fc19f381 | 1643 | /* should not */ |
1da177e4 LT |
1644 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); |
1645 | } | |
1646 | ||
1647 | if ((sense[7] & 0x3F) == 0x01) { | |
1648 | /* operation code is WRITE DATA -> data area orientation */ | |
1649 | LO_data[0] = 0x81; | |
1650 | ||
1651 | } else if ((sense[7] & 0x3F) == 0x03) { | |
1652 | /* operation code is FORMAT WRITE -> index orientation */ | |
1653 | LO_data[0] = 0xC3; | |
1654 | ||
1655 | } else { | |
1656 | LO_data[0] = sense[7]; /* operation */ | |
1657 | } | |
1658 | ||
1659 | LO_data[1] = sense[8]; /* auxiliary */ | |
1660 | LO_data[2] = sense[9]; | |
1661 | LO_data[3] = sense[3]; /* count */ | |
1662 | LO_data[4] = sense[29]; /* seek_addr.cyl */ | |
1663 | LO_data[5] = sense[30]; /* seek_addr.cyl 2nd byte */ | |
1664 | LO_data[7] = sense[31]; /* seek_addr.head 2nd byte */ | |
1665 | ||
1666 | memcpy(&(LO_data[8]), &(sense[11]), 8); | |
1667 | ||
1668 | /* create DE ccw */ | |
1669 | ccw = erp->cpaddr; | |
8e09f215 | 1670 | memset(ccw, 0, sizeof(struct ccw1)); |
1da177e4 LT |
1671 | ccw->cmd_code = DASD_ECKD_CCW_DEFINE_EXTENT; |
1672 | ccw->flags = CCW_FLAG_CC; | |
1673 | ccw->count = 16; | |
1674 | ccw->cda = (__u32)(addr_t) DE_data; | |
1675 | ||
1676 | /* create LO ccw */ | |
1677 | ccw++; | |
8e09f215 | 1678 | memset(ccw, 0, sizeof(struct ccw1)); |
1da177e4 LT |
1679 | ccw->cmd_code = DASD_ECKD_CCW_LOCATE_RECORD; |
1680 | ccw->flags = CCW_FLAG_CC; | |
1681 | ccw->count = 16; | |
1682 | ccw->cda = (__u32)(addr_t) LO_data; | |
1683 | ||
1684 | /* TIC to the failed ccw */ | |
1685 | ccw++; | |
1686 | ccw->cmd_code = CCW_CMD_TIC; | |
1687 | ccw->cda = cpa; | |
1688 | ||
1689 | /* fill erp related fields */ | |
1690 | erp->function = dasd_3990_erp_action_1B_32; | |
1691 | erp->refers = default_erp->refers; | |
8e09f215 SW |
1692 | erp->startdev = device; |
1693 | erp->memdev = device; | |
1da177e4 LT |
1694 | erp->magic = default_erp->magic; |
1695 | erp->expires = 0; | |
1696 | erp->retries = 256; | |
1697 | erp->buildclk = get_clock(); | |
1698 | erp->status = DASD_CQR_FILLED; | |
1699 | ||
1700 | /* remove the default erp */ | |
1701 | dasd_free_erp_request(default_erp, device); | |
1702 | ||
1703 | return erp; | |
1704 | ||
1705 | } /* end dasd_3990_erp_action_1B_32 */ | |
1706 | ||
1707 | /* | |
1708 | * DASD_3990_UPDATE_1B | |
1709 | * | |
1710 | * DESCRIPTION | |
138c014d | 1711 | * Handles the update to the 32 byte 'Action 1B' of Single Program |
1da177e4 LT |
1712 | * Action Codes in case the first action was not successful. |
1713 | * The already created 'previous_erp' is the currently not successful | |
138c014d | 1714 | * ERP. |
1da177e4 LT |
1715 | * |
1716 | * PARAMETER | |
1717 | * previous_erp already created previous erp. | |
138c014d | 1718 | * sense current sense data |
1da177e4 | 1719 | * RETURN VALUES |
138c014d | 1720 | * erp modified erp |
1da177e4 LT |
1721 | */ |
1722 | static struct dasd_ccw_req * | |
1723 | dasd_3990_update_1B(struct dasd_ccw_req * previous_erp, char *sense) | |
1724 | { | |
1725 | ||
8e09f215 | 1726 | struct dasd_device *device = previous_erp->startdev; |
1da177e4 LT |
1727 | __u32 cpa = 0; |
1728 | struct dasd_ccw_req *cqr; | |
1729 | struct dasd_ccw_req *erp; | |
1730 | char *LO_data; /* struct LO_eckd_data */ | |
1731 | struct ccw1 *ccw; | |
1732 | ||
fc19f381 | 1733 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1734 | "Write not finished because of unexpected condition" |
1735 | " - follow on"); | |
1736 | ||
1737 | /* determine the original cqr */ | |
1738 | cqr = previous_erp; | |
1739 | ||
1740 | while (cqr->refers != NULL) { | |
1741 | cqr = cqr->refers; | |
1742 | } | |
1743 | ||
f3eb5384 SW |
1744 | if (scsw_is_tm(&cqr->irb.scsw)) { |
1745 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", | |
1746 | "32 bit sense, action 1B, update," | |
1747 | " in transport mode - just retry"); | |
1748 | return previous_erp; | |
1749 | } | |
1750 | ||
1da177e4 LT |
1751 | /* for imprecise ending just do default erp */ |
1752 | if (sense[1] & 0x01) { | |
fc19f381 | 1753 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1754 | "Imprecise ending is set - just retry"); |
1755 | ||
8e09f215 | 1756 | previous_erp->status = DASD_CQR_FILLED; |
1da177e4 LT |
1757 | |
1758 | return previous_erp; | |
1759 | } | |
1760 | ||
1761 | /* determine the address of the CCW to be restarted */ | |
1762 | /* Imprecise ending is not set -> addr from IRB-SCSW */ | |
23d805b6 | 1763 | cpa = previous_erp->irb.scsw.cmd.cpa; |
1da177e4 LT |
1764 | |
1765 | if (cpa == 0) { | |
fc19f381 SH |
1766 | /* internal error 02 - |
1767 | Unable to determine address of the CCW to be restarted */ | |
1768 | dev_err(&device->cdev->dev, "An error occurred in the DASD " | |
1769 | "device driver, reason=%s\n", "02"); | |
1da177e4 LT |
1770 | |
1771 | previous_erp->status = DASD_CQR_FAILED; | |
1772 | ||
1773 | return previous_erp; | |
1774 | } | |
1775 | ||
1776 | erp = previous_erp; | |
1777 | ||
1778 | /* update the LO with the new returned sense data */ | |
8e09f215 | 1779 | LO_data = erp->data + sizeof(struct DE_eckd_data); |
1da177e4 LT |
1780 | |
1781 | if ((sense[3] == 0x01) && (LO_data[1] & 0x01)) { | |
fc19f381 | 1782 | /* should not happen */ |
1da177e4 LT |
1783 | previous_erp->status = DASD_CQR_FAILED; |
1784 | ||
1785 | return previous_erp; | |
1786 | } | |
1787 | ||
1788 | if ((sense[7] & 0x3F) == 0x01) { | |
1789 | /* operation code is WRITE DATA -> data area orientation */ | |
1790 | LO_data[0] = 0x81; | |
1791 | ||
1792 | } else if ((sense[7] & 0x3F) == 0x03) { | |
1793 | /* operation code is FORMAT WRITE -> index orientation */ | |
1794 | LO_data[0] = 0xC3; | |
1795 | ||
1796 | } else { | |
1797 | LO_data[0] = sense[7]; /* operation */ | |
1798 | } | |
1799 | ||
1800 | LO_data[1] = sense[8]; /* auxiliary */ | |
1801 | LO_data[2] = sense[9]; | |
1802 | LO_data[3] = sense[3]; /* count */ | |
1803 | LO_data[4] = sense[29]; /* seek_addr.cyl */ | |
1804 | LO_data[5] = sense[30]; /* seek_addr.cyl 2nd byte */ | |
1805 | LO_data[7] = sense[31]; /* seek_addr.head 2nd byte */ | |
1806 | ||
1807 | memcpy(&(LO_data[8]), &(sense[11]), 8); | |
1808 | ||
1809 | /* TIC to the failed ccw */ | |
1810 | ccw = erp->cpaddr; /* addr of DE ccw */ | |
1811 | ccw++; /* addr of LE ccw */ | |
1812 | ccw++; /* addr of TIC ccw */ | |
1813 | ccw->cda = cpa; | |
1814 | ||
8e09f215 | 1815 | erp->status = DASD_CQR_FILLED; |
1da177e4 LT |
1816 | |
1817 | return erp; | |
1818 | ||
1819 | } /* end dasd_3990_update_1B */ | |
1820 | ||
1821 | /* | |
138c014d | 1822 | * DASD_3990_ERP_COMPOUND_RETRY |
1da177e4 LT |
1823 | * |
1824 | * DESCRIPTION | |
1825 | * Handles the compound ERP action retry code. | |
1826 | * NOTE: At least one retry is done even if zero is specified | |
1827 | * by the sense data. This makes enqueueing of the request | |
1828 | * easier. | |
1829 | * | |
1830 | * PARAMETER | |
1831 | * sense sense data of the actual error | |
1832 | * erp pointer to the currently created ERP | |
1833 | * | |
1834 | * RETURN VALUES | |
1835 | * erp modified ERP pointer | |
1836 | * | |
1837 | */ | |
1838 | static void | |
1839 | dasd_3990_erp_compound_retry(struct dasd_ccw_req * erp, char *sense) | |
1840 | { | |
1841 | ||
1842 | switch (sense[25] & 0x03) { | |
1843 | case 0x00: /* no not retry */ | |
1844 | erp->retries = 1; | |
1845 | break; | |
1846 | ||
1847 | case 0x01: /* retry 2 times */ | |
1848 | erp->retries = 2; | |
1849 | break; | |
1850 | ||
1851 | case 0x02: /* retry 10 times */ | |
1852 | erp->retries = 10; | |
1853 | break; | |
1854 | ||
1855 | case 0x03: /* retry 256 times */ | |
1856 | erp->retries = 256; | |
1857 | break; | |
1858 | ||
1859 | default: | |
1860 | BUG(); | |
1861 | } | |
1862 | ||
1863 | erp->function = dasd_3990_erp_compound_retry; | |
1864 | ||
1865 | } /* end dasd_3990_erp_compound_retry */ | |
1866 | ||
1867 | /* | |
138c014d | 1868 | * DASD_3990_ERP_COMPOUND_PATH |
1da177e4 LT |
1869 | * |
1870 | * DESCRIPTION | |
1871 | * Handles the compound ERP action for retry on alternate | |
1872 | * channel path. | |
1873 | * | |
1874 | * PARAMETER | |
1875 | * sense sense data of the actual error | |
1876 | * erp pointer to the currently created ERP | |
1877 | * | |
1878 | * RETURN VALUES | |
1879 | * erp modified ERP pointer | |
1880 | * | |
1881 | */ | |
1882 | static void | |
1883 | dasd_3990_erp_compound_path(struct dasd_ccw_req * erp, char *sense) | |
1884 | { | |
1885 | ||
1886 | if (sense[25] & DASD_SENSE_BIT_3) { | |
1887 | dasd_3990_erp_alternate_path(erp); | |
1888 | ||
1889 | if (erp->status == DASD_CQR_FAILED) { | |
138c014d | 1890 | /* reset the lpm and the status to be able to |
1da177e4 LT |
1891 | * try further actions. */ |
1892 | ||
1893 | erp->lpm = 0; | |
8e09f215 | 1894 | erp->status = DASD_CQR_NEED_ERP; |
1da177e4 LT |
1895 | } |
1896 | } | |
1897 | ||
1898 | erp->function = dasd_3990_erp_compound_path; | |
1899 | ||
1900 | } /* end dasd_3990_erp_compound_path */ | |
1901 | ||
1902 | /* | |
138c014d | 1903 | * DASD_3990_ERP_COMPOUND_CODE |
1da177e4 LT |
1904 | * |
1905 | * DESCRIPTION | |
1906 | * Handles the compound ERP action for retry code. | |
1907 | * | |
1908 | * PARAMETER | |
1909 | * sense sense data of the actual error | |
1910 | * erp pointer to the currently created ERP | |
1911 | * | |
1912 | * RETURN VALUES | |
1913 | * erp NEW ERP pointer | |
1914 | * | |
1915 | */ | |
1916 | static struct dasd_ccw_req * | |
1917 | dasd_3990_erp_compound_code(struct dasd_ccw_req * erp, char *sense) | |
1918 | { | |
1919 | ||
1920 | if (sense[25] & DASD_SENSE_BIT_2) { | |
1921 | ||
1922 | switch (sense[28]) { | |
1923 | case 0x17: | |
138c014d | 1924 | /* issue a Diagnostic Control command with an |
3a4fa0a2 | 1925 | * Inhibit Write subcommand and controller modifier */ |
1da177e4 LT |
1926 | erp = dasd_3990_erp_DCTL(erp, 0x20); |
1927 | break; | |
138c014d | 1928 | |
1da177e4 LT |
1929 | case 0x25: |
1930 | /* wait for 5 seconds and retry again */ | |
1931 | erp->retries = 1; | |
138c014d | 1932 | |
1da177e4 LT |
1933 | dasd_3990_erp_block_queue (erp, 5*HZ); |
1934 | break; | |
138c014d | 1935 | |
1da177e4 LT |
1936 | default: |
1937 | /* should not happen - continue */ | |
1938 | break; | |
1939 | } | |
1940 | } | |
1941 | ||
1942 | erp->function = dasd_3990_erp_compound_code; | |
1943 | ||
1944 | return erp; | |
1945 | ||
1946 | } /* end dasd_3990_erp_compound_code */ | |
1947 | ||
1948 | /* | |
138c014d | 1949 | * DASD_3990_ERP_COMPOUND_CONFIG |
1da177e4 LT |
1950 | * |
1951 | * DESCRIPTION | |
1952 | * Handles the compound ERP action for configruation | |
1953 | * dependent error. | |
1954 | * Note: duplex handling is not implemented (yet). | |
1955 | * | |
1956 | * PARAMETER | |
1957 | * sense sense data of the actual error | |
1958 | * erp pointer to the currently created ERP | |
1959 | * | |
1960 | * RETURN VALUES | |
1961 | * erp modified ERP pointer | |
1962 | * | |
1963 | */ | |
1964 | static void | |
1965 | dasd_3990_erp_compound_config(struct dasd_ccw_req * erp, char *sense) | |
1966 | { | |
1967 | ||
1968 | if ((sense[25] & DASD_SENSE_BIT_1) && (sense[26] & DASD_SENSE_BIT_2)) { | |
1969 | ||
fc19f381 SH |
1970 | /* set to suspended duplex state then restart |
1971 | internal error 05 - Set device to suspended duplex state | |
1972 | should be done */ | |
8e09f215 | 1973 | struct dasd_device *device = erp->startdev; |
fc19f381 SH |
1974 | dev_err(&device->cdev->dev, |
1975 | "An error occurred in the DASD device driver, " | |
1976 | "reason=%s\n", "05"); | |
1da177e4 LT |
1977 | |
1978 | } | |
1979 | ||
1980 | erp->function = dasd_3990_erp_compound_config; | |
1981 | ||
1982 | } /* end dasd_3990_erp_compound_config */ | |
1983 | ||
1984 | /* | |
138c014d | 1985 | * DASD_3990_ERP_COMPOUND |
1da177e4 LT |
1986 | * |
1987 | * DESCRIPTION | |
138c014d | 1988 | * Does the further compound program action if |
1da177e4 LT |
1989 | * compound retry was not successful. |
1990 | * | |
1991 | * PARAMETER | |
1992 | * sense sense data of the actual error | |
1993 | * erp pointer to the current (failed) ERP | |
1994 | * | |
1995 | * RETURN VALUES | |
1996 | * erp (additional) ERP pointer | |
1997 | * | |
1998 | */ | |
1999 | static struct dasd_ccw_req * | |
2000 | dasd_3990_erp_compound(struct dasd_ccw_req * erp, char *sense) | |
2001 | { | |
2002 | ||
2003 | if ((erp->function == dasd_3990_erp_compound_retry) && | |
8e09f215 | 2004 | (erp->status == DASD_CQR_NEED_ERP)) { |
1da177e4 LT |
2005 | |
2006 | dasd_3990_erp_compound_path(erp, sense); | |
2007 | } | |
2008 | ||
2009 | if ((erp->function == dasd_3990_erp_compound_path) && | |
8e09f215 | 2010 | (erp->status == DASD_CQR_NEED_ERP)) { |
1da177e4 LT |
2011 | |
2012 | erp = dasd_3990_erp_compound_code(erp, sense); | |
2013 | } | |
2014 | ||
2015 | if ((erp->function == dasd_3990_erp_compound_code) && | |
8e09f215 | 2016 | (erp->status == DASD_CQR_NEED_ERP)) { |
1da177e4 LT |
2017 | |
2018 | dasd_3990_erp_compound_config(erp, sense); | |
2019 | } | |
2020 | ||
2021 | /* if no compound action ERP specified, the request failed */ | |
8e09f215 | 2022 | if (erp->status == DASD_CQR_NEED_ERP) |
1da177e4 | 2023 | erp->status = DASD_CQR_FAILED; |
1da177e4 LT |
2024 | |
2025 | return erp; | |
2026 | ||
2027 | } /* end dasd_3990_erp_compound */ | |
2028 | ||
f60c768c SH |
2029 | /* |
2030 | *DASD_3990_ERP_HANDLE_SIM | |
2031 | * | |
2032 | *DESCRIPTION | |
2033 | * inspects the SIM SENSE data and starts an appropriate action | |
2034 | * | |
2035 | * PARAMETER | |
2036 | * sense sense data of the actual error | |
2037 | * | |
2038 | * RETURN VALUES | |
2039 | * none | |
2040 | */ | |
2041 | void | |
2042 | dasd_3990_erp_handle_sim(struct dasd_device *device, char *sense) | |
2043 | { | |
2044 | /* print message according to log or message to operator mode */ | |
2045 | if ((sense[24] & DASD_SIM_MSG_TO_OP) || (sense[1] & 0x10)) { | |
f60c768c | 2046 | /* print SIM SRC from RefCode */ |
fc19f381 SH |
2047 | dev_err(&device->cdev->dev, "SIM - SRC: " |
2048 | "%02x%02x%02x%02x\n", sense[22], | |
f60c768c SH |
2049 | sense[23], sense[11], sense[12]); |
2050 | } else if (sense[24] & DASD_SIM_LOG) { | |
2051 | /* print SIM SRC Refcode */ | |
fc19f381 SH |
2052 | dev_warn(&device->cdev->dev, "log SIM - SRC: " |
2053 | "%02x%02x%02x%02x\n", sense[22], | |
f60c768c SH |
2054 | sense[23], sense[11], sense[12]); |
2055 | } | |
2056 | } | |
2057 | ||
1da177e4 | 2058 | /* |
138c014d | 2059 | * DASD_3990_ERP_INSPECT_32 |
1da177e4 LT |
2060 | * |
2061 | * DESCRIPTION | |
2062 | * Does a detailed inspection of the 32 byte sense data | |
138c014d | 2063 | * and sets up a related error recovery action. |
1da177e4 LT |
2064 | * |
2065 | * PARAMETER | |
2066 | * sense sense data of the actual error | |
2067 | * erp pointer to the currently created default ERP | |
2068 | * | |
2069 | * RETURN VALUES | |
2070 | * erp_filled pointer to the ERP | |
2071 | * | |
2072 | */ | |
2073 | static struct dasd_ccw_req * | |
2074 | dasd_3990_erp_inspect_32(struct dasd_ccw_req * erp, char *sense) | |
2075 | { | |
2076 | ||
8e09f215 | 2077 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
2078 | |
2079 | erp->function = dasd_3990_erp_inspect_32; | |
2080 | ||
f60c768c SH |
2081 | /* check for SIM sense data */ |
2082 | if ((sense[6] & DASD_SIM_SENSE) == DASD_SIM_SENSE) | |
2083 | dasd_3990_erp_handle_sim(device, sense); | |
2084 | ||
1da177e4 LT |
2085 | if (sense[25] & DASD_SENSE_BIT_0) { |
2086 | ||
2087 | /* compound program action codes (byte25 bit 0 == '1') */ | |
2088 | dasd_3990_erp_compound_retry(erp, sense); | |
2089 | ||
2090 | } else { | |
2091 | ||
2092 | /* single program action codes (byte25 bit 0 == '0') */ | |
2093 | switch (sense[25]) { | |
2094 | ||
2095 | case 0x00: /* success - use default ERP for retries */ | |
fc19f381 | 2096 | DBF_DEV_EVENT(DBF_DEBUG, device, "%s", |
1da177e4 LT |
2097 | "ERP called for successful request" |
2098 | " - just retry"); | |
2099 | break; | |
2100 | ||
2101 | case 0x01: /* fatal error */ | |
fc19f381 SH |
2102 | dev_err(&device->cdev->dev, |
2103 | "ERP failed for the DASD\n"); | |
1da177e4 LT |
2104 | |
2105 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
2106 | break; | |
2107 | ||
2108 | case 0x02: /* intervention required */ | |
2109 | case 0x03: /* intervention required during dual copy */ | |
2110 | erp = dasd_3990_erp_int_req(erp); | |
2111 | break; | |
2112 | ||
fc19f381 SH |
2113 | case 0x0F: /* length mismatch during update write command |
2114 | internal error 08 - update write command error*/ | |
2115 | dev_err(&device->cdev->dev, "An error occurred in the " | |
2116 | "DASD device driver, reason=%s\n", "08"); | |
1da177e4 LT |
2117 | |
2118 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
2119 | break; | |
2120 | ||
2121 | case 0x10: /* logging required for other channel program */ | |
2122 | erp = dasd_3990_erp_action_10_32(erp, sense); | |
2123 | break; | |
2124 | ||
fc19f381 SH |
2125 | case 0x15: /* next track outside defined extend |
2126 | internal error 07 - The next track is not | |
2127 | within the defined storage extent */ | |
2128 | dev_err(&device->cdev->dev, | |
2129 | "An error occurred in the DASD device driver, " | |
2130 | "reason=%s\n", "07"); | |
1da177e4 LT |
2131 | |
2132 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
2133 | break; | |
2134 | ||
2135 | case 0x1B: /* unexpected condition during write */ | |
2136 | ||
2137 | erp = dasd_3990_erp_action_1B_32(erp, sense); | |
2138 | break; | |
2139 | ||
2140 | case 0x1C: /* invalid data */ | |
fc19f381 | 2141 | dev_emerg(&device->cdev->dev, |
1da177e4 | 2142 | "Data recovered during retry with PCI " |
fc19f381 | 2143 | "fetch mode active\n"); |
1da177e4 LT |
2144 | |
2145 | /* not possible to handle this situation in Linux */ | |
2146 | panic | |
2147 | ("Invalid data - No way to inform application " | |
2148 | "about the possibly incorrect data"); | |
2149 | break; | |
2150 | ||
2151 | case 0x1D: /* state-change pending */ | |
fc19f381 | 2152 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
2153 | "A State change pending condition exists " |
2154 | "for the subsystem or device"); | |
2155 | ||
2156 | erp = dasd_3990_erp_action_4(erp, sense); | |
2157 | break; | |
2158 | ||
2159 | case 0x1E: /* busy */ | |
fc19f381 | 2160 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
2161 | "Busy condition exists " |
2162 | "for the subsystem or device"); | |
2163 | erp = dasd_3990_erp_action_4(erp, sense); | |
2164 | break; | |
2165 | ||
2166 | default: /* all others errors - default erp */ | |
2167 | break; | |
2168 | } | |
2169 | } | |
2170 | ||
2171 | return erp; | |
2172 | ||
2173 | } /* end dasd_3990_erp_inspect_32 */ | |
2174 | ||
2175 | /* | |
138c014d | 2176 | ***************************************************************************** |
1da177e4 | 2177 | * main ERP control fuctions (24 and 32 byte sense) |
138c014d | 2178 | ***************************************************************************** |
1da177e4 LT |
2179 | */ |
2180 | ||
6c5f57c7 SH |
2181 | /* |
2182 | * DASD_3990_ERP_CONTROL_CHECK | |
2183 | * | |
2184 | * DESCRIPTION | |
2185 | * Does a generic inspection if a control check occured and sets up | |
2186 | * the related error recovery procedure | |
2187 | * | |
2188 | * PARAMETER | |
2189 | * erp pointer to the currently created default ERP | |
2190 | * | |
2191 | * RETURN VALUES | |
2192 | * erp_filled pointer to the erp | |
2193 | */ | |
2194 | ||
2195 | static struct dasd_ccw_req * | |
2196 | dasd_3990_erp_control_check(struct dasd_ccw_req *erp) | |
2197 | { | |
2198 | struct dasd_device *device = erp->startdev; | |
2199 | ||
f3eb5384 | 2200 | if (scsw_cstat(&erp->refers->irb.scsw) & (SCHN_STAT_INTF_CTRL_CHK |
6c5f57c7 | 2201 | | SCHN_STAT_CHN_CTRL_CHK)) { |
fc19f381 | 2202 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
6c5f57c7 SH |
2203 | "channel or interface control check"); |
2204 | erp = dasd_3990_erp_action_4(erp, NULL); | |
2205 | } | |
2206 | return erp; | |
2207 | } | |
2208 | ||
1da177e4 LT |
2209 | /* |
2210 | * DASD_3990_ERP_INSPECT | |
2211 | * | |
2212 | * DESCRIPTION | |
2213 | * Does a detailed inspection for sense data by calling either | |
2214 | * the 24-byte or the 32-byte inspection routine. | |
2215 | * | |
2216 | * PARAMETER | |
2217 | * erp pointer to the currently created default ERP | |
2218 | * RETURN VALUES | |
138c014d | 2219 | * erp_new contens was possibly modified |
1da177e4 LT |
2220 | */ |
2221 | static struct dasd_ccw_req * | |
f3eb5384 | 2222 | dasd_3990_erp_inspect(struct dasd_ccw_req *erp) |
1da177e4 LT |
2223 | { |
2224 | ||
2225 | struct dasd_ccw_req *erp_new = NULL; | |
f3eb5384 | 2226 | char *sense; |
1da177e4 | 2227 | |
8e09f215 SW |
2228 | /* if this problem occured on an alias retry on base */ |
2229 | erp_new = dasd_3990_erp_inspect_alias(erp); | |
2230 | if (erp_new) | |
2231 | return erp_new; | |
2232 | ||
f3eb5384 SW |
2233 | /* sense data are located in the refers record of the |
2234 | * already set up new ERP ! | |
2235 | * check if concurrent sens is available | |
2236 | */ | |
2237 | sense = dasd_get_sense(&erp->refers->irb); | |
2238 | if (!sense) | |
6c5f57c7 | 2239 | erp_new = dasd_3990_erp_control_check(erp); |
1da177e4 | 2240 | /* distinguish between 24 and 32 byte sense data */ |
6c5f57c7 | 2241 | else if (sense[27] & DASD_SENSE_BIT_0) { |
1da177e4 LT |
2242 | |
2243 | /* inspect the 24 byte sense data */ | |
2244 | erp_new = dasd_3990_erp_inspect_24(erp, sense); | |
2245 | ||
2246 | } else { | |
2247 | ||
2248 | /* inspect the 32 byte sense data */ | |
2249 | erp_new = dasd_3990_erp_inspect_32(erp, sense); | |
2250 | ||
2251 | } /* end distinguish between 24 and 32 byte sense data */ | |
2252 | ||
2253 | return erp_new; | |
2254 | } | |
2255 | ||
2256 | /* | |
2257 | * DASD_3990_ERP_ADD_ERP | |
138c014d | 2258 | * |
1da177e4 LT |
2259 | * DESCRIPTION |
2260 | * This funtion adds an additional request block (ERP) to the head of | |
2261 | * the given cqr (or erp). | |
f3eb5384 SW |
2262 | * For a command mode cqr the erp is initialized as an default erp |
2263 | * (retry TIC). | |
2264 | * For transport mode we make a copy of the original TCW (points to | |
2265 | * the original TCCB, TIDALs, etc.) but give it a fresh | |
2266 | * TSB so the original sense data will not be changed. | |
1da177e4 LT |
2267 | * |
2268 | * PARAMETER | |
138c014d | 2269 | * cqr head of the current ERP-chain (or single cqr if |
1da177e4 LT |
2270 | * first error) |
2271 | * RETURN VALUES | |
2272 | * erp pointer to new ERP-chain head | |
2273 | */ | |
f3eb5384 | 2274 | static struct dasd_ccw_req *dasd_3990_erp_add_erp(struct dasd_ccw_req *cqr) |
1da177e4 LT |
2275 | { |
2276 | ||
8e09f215 | 2277 | struct dasd_device *device = cqr->startdev; |
1da177e4 | 2278 | struct ccw1 *ccw; |
1da177e4 | 2279 | struct dasd_ccw_req *erp; |
f3eb5384 SW |
2280 | int cplength, datasize; |
2281 | struct tcw *tcw; | |
2282 | struct tsb *tsb; | |
2283 | ||
2284 | if (cqr->cpmode == 1) { | |
2285 | cplength = 0; | |
2286 | datasize = sizeof(struct tcw) + sizeof(struct tsb); | |
2287 | } else { | |
2288 | cplength = 2; | |
2289 | datasize = 0; | |
2290 | } | |
1da177e4 | 2291 | |
f3eb5384 SW |
2292 | /* allocate additional request block */ |
2293 | erp = dasd_alloc_erp_request((char *) &cqr->magic, | |
2294 | cplength, datasize, device); | |
1da177e4 LT |
2295 | if (IS_ERR(erp)) { |
2296 | if (cqr->retries <= 0) { | |
fc19f381 | 2297 | DBF_DEV_EVENT(DBF_ERR, device, "%s", |
1da177e4 LT |
2298 | "Unable to allocate ERP request"); |
2299 | cqr->status = DASD_CQR_FAILED; | |
2300 | cqr->stopclk = get_clock (); | |
2301 | } else { | |
fc19f381 | 2302 | DBF_DEV_EVENT(DBF_ERR, device, |
1da177e4 LT |
2303 | "Unable to allocate ERP request " |
2304 | "(%i retries left)", | |
2305 | cqr->retries); | |
8e09f215 | 2306 | dasd_block_set_timer(device->block, (HZ << 3)); |
1da177e4 LT |
2307 | } |
2308 | return cqr; | |
2309 | } | |
2310 | ||
eb6e199b | 2311 | ccw = cqr->cpaddr; |
f3eb5384 SW |
2312 | if (cqr->cpmode == 1) { |
2313 | /* make a shallow copy of the original tcw but set new tsb */ | |
2314 | erp->cpmode = 1; | |
2315 | erp->cpaddr = erp->data; | |
2316 | tcw = erp->data; | |
2317 | tsb = (struct tsb *) &tcw[1]; | |
2318 | *tcw = *((struct tcw *)cqr->cpaddr); | |
2319 | tcw->tsb = (long)tsb; | |
eb6e199b SW |
2320 | } else if (ccw->cmd_code == DASD_ECKD_CCW_PSF) { |
2321 | /* PSF cannot be chained from NOOP/TIC */ | |
2322 | erp->cpaddr = cqr->cpaddr; | |
f3eb5384 SW |
2323 | } else { |
2324 | /* initialize request with default TIC to current ERP/CQR */ | |
2325 | ccw = erp->cpaddr; | |
2326 | ccw->cmd_code = CCW_CMD_NOOP; | |
2327 | ccw->flags = CCW_FLAG_CC; | |
2328 | ccw++; | |
2329 | ccw->cmd_code = CCW_CMD_TIC; | |
2330 | ccw->cda = (long)(cqr->cpaddr); | |
2331 | } | |
2332 | ||
1da177e4 LT |
2333 | erp->function = dasd_3990_erp_add_erp; |
2334 | erp->refers = cqr; | |
8e09f215 SW |
2335 | erp->startdev = device; |
2336 | erp->memdev = device; | |
2337 | erp->block = cqr->block; | |
1da177e4 LT |
2338 | erp->magic = cqr->magic; |
2339 | erp->expires = 0; | |
2340 | erp->retries = 256; | |
2341 | erp->buildclk = get_clock(); | |
1da177e4 LT |
2342 | erp->status = DASD_CQR_FILLED; |
2343 | ||
2344 | return erp; | |
2345 | } | |
2346 | ||
2347 | /* | |
138c014d HH |
2348 | * DASD_3990_ERP_ADDITIONAL_ERP |
2349 | * | |
1da177e4 LT |
2350 | * DESCRIPTION |
2351 | * An additional ERP is needed to handle the current error. | |
2352 | * Add ERP to the head of the ERP-chain containing the ERP processing | |
2353 | * determined based on the sense data. | |
2354 | * | |
2355 | * PARAMETER | |
138c014d | 2356 | * cqr head of the current ERP-chain (or single cqr if |
1da177e4 LT |
2357 | * first error) |
2358 | * | |
2359 | * RETURN VALUES | |
2360 | * erp pointer to new ERP-chain head | |
2361 | */ | |
2362 | static struct dasd_ccw_req * | |
2363 | dasd_3990_erp_additional_erp(struct dasd_ccw_req * cqr) | |
2364 | { | |
2365 | ||
2366 | struct dasd_ccw_req *erp = NULL; | |
2367 | ||
2368 | /* add erp and initialize with default TIC */ | |
2369 | erp = dasd_3990_erp_add_erp(cqr); | |
2370 | ||
2371 | /* inspect sense, determine specific ERP if possible */ | |
2372 | if (erp != cqr) { | |
2373 | ||
2374 | erp = dasd_3990_erp_inspect(erp); | |
2375 | } | |
2376 | ||
2377 | return erp; | |
2378 | ||
2379 | } /* end dasd_3990_erp_additional_erp */ | |
2380 | ||
2381 | /* | |
2382 | * DASD_3990_ERP_ERROR_MATCH | |
2383 | * | |
2384 | * DESCRIPTION | |
2385 | * Check if the device status of the given cqr is the same. | |
2386 | * This means that the failed CCW and the relevant sense data | |
2387 | * must match. | |
2388 | * I don't distinguish between 24 and 32 byte sense because in case of | |
2389 | * 24 byte sense byte 25 and 27 is set as well. | |
2390 | * | |
2391 | * PARAMETER | |
138c014d | 2392 | * cqr1 first cqr, which will be compared with the |
1da177e4 LT |
2393 | * cqr2 second cqr. |
2394 | * | |
2395 | * RETURN VALUES | |
2396 | * match 'boolean' for match found | |
2397 | * returns 1 if match found, otherwise 0. | |
2398 | */ | |
f3eb5384 SW |
2399 | static int dasd_3990_erp_error_match(struct dasd_ccw_req *cqr1, |
2400 | struct dasd_ccw_req *cqr2) | |
1da177e4 | 2401 | { |
f3eb5384 | 2402 | char *sense1, *sense2; |
1da177e4 | 2403 | |
5c12f240 SW |
2404 | if (cqr1->startdev != cqr2->startdev) |
2405 | return 0; | |
1da177e4 | 2406 | |
f3eb5384 SW |
2407 | sense1 = dasd_get_sense(&cqr1->irb); |
2408 | sense2 = dasd_get_sense(&cqr2->irb); | |
6c5f57c7 | 2409 | |
f3eb5384 SW |
2410 | /* one request has sense data, the other not -> no match, return 0 */ |
2411 | if (!sense1 != !sense2) | |
2412 | return 0; | |
2413 | /* no sense data in both cases -> check cstat for IFCC */ | |
2414 | if (!sense1 && !sense2) { | |
2415 | if ((scsw_cstat(&cqr1->irb.scsw) & (SCHN_STAT_INTF_CTRL_CHK | | |
2416 | SCHN_STAT_CHN_CTRL_CHK)) == | |
2417 | (scsw_cstat(&cqr2->irb.scsw) & (SCHN_STAT_INTF_CTRL_CHK | | |
2418 | SCHN_STAT_CHN_CTRL_CHK))) | |
6c5f57c7 SH |
2419 | return 1; /* match with ifcc*/ |
2420 | } | |
1da177e4 | 2421 | /* check sense data; byte 0-2,25,27 */ |
f3eb5384 SW |
2422 | if (!(sense1 && sense2 && |
2423 | (memcmp(sense1, sense2, 3) == 0) && | |
2424 | (sense1[27] == sense2[27]) && | |
2425 | (sense1[25] == sense2[25]))) { | |
1da177e4 LT |
2426 | |
2427 | return 0; /* sense doesn't match */ | |
2428 | } | |
2429 | ||
2430 | return 1; /* match */ | |
2431 | ||
2432 | } /* end dasd_3990_erp_error_match */ | |
2433 | ||
2434 | /* | |
2435 | * DASD_3990_ERP_IN_ERP | |
2436 | * | |
2437 | * DESCRIPTION | |
2438 | * check if the current error already happened before. | |
2439 | * quick exit if current cqr is not an ERP (cqr->refers=NULL) | |
2440 | * | |
2441 | * PARAMETER | |
2442 | * cqr failed cqr (either original cqr or already an erp) | |
2443 | * | |
2444 | * RETURN VALUES | |
138c014d | 2445 | * erp erp-pointer to the already defined error |
1da177e4 LT |
2446 | * recovery procedure OR |
2447 | * NULL if a 'new' error occurred. | |
2448 | */ | |
2449 | static struct dasd_ccw_req * | |
2450 | dasd_3990_erp_in_erp(struct dasd_ccw_req *cqr) | |
2451 | { | |
2452 | ||
2453 | struct dasd_ccw_req *erp_head = cqr, /* save erp chain head */ | |
2454 | *erp_match = NULL; /* save erp chain head */ | |
2455 | int match = 0; /* 'boolean' for matching error found */ | |
2456 | ||
2457 | if (cqr->refers == NULL) { /* return if not in erp */ | |
2458 | return NULL; | |
2459 | } | |
2460 | ||
2461 | /* check the erp/cqr chain for current error */ | |
2462 | do { | |
2463 | match = dasd_3990_erp_error_match(erp_head, cqr->refers); | |
2464 | erp_match = cqr; /* save possible matching erp */ | |
2465 | cqr = cqr->refers; /* check next erp/cqr in queue */ | |
2466 | ||
2467 | } while ((cqr->refers != NULL) && (!match)); | |
2468 | ||
2469 | if (!match) { | |
2470 | return NULL; /* no match was found */ | |
2471 | } | |
2472 | ||
2473 | return erp_match; /* return address of matching erp */ | |
2474 | ||
2475 | } /* END dasd_3990_erp_in_erp */ | |
2476 | ||
2477 | /* | |
2478 | * DASD_3990_ERP_FURTHER_ERP (24 & 32 byte sense) | |
2479 | * | |
2480 | * DESCRIPTION | |
138c014d | 2481 | * No retry is left for the current ERP. Check what has to be done |
1da177e4 LT |
2482 | * with the ERP. |
2483 | * - do further defined ERP action or | |
138c014d | 2484 | * - wait for interrupt or |
1da177e4 LT |
2485 | * - exit with permanent error |
2486 | * | |
2487 | * PARAMETER | |
2488 | * erp ERP which is in progress with no retry left | |
2489 | * | |
2490 | * RETURN VALUES | |
2491 | * erp modified/additional ERP | |
2492 | */ | |
2493 | static struct dasd_ccw_req * | |
2494 | dasd_3990_erp_further_erp(struct dasd_ccw_req *erp) | |
2495 | { | |
2496 | ||
8e09f215 | 2497 | struct dasd_device *device = erp->startdev; |
f3eb5384 | 2498 | char *sense = dasd_get_sense(&erp->irb); |
1da177e4 LT |
2499 | |
2500 | /* check for 24 byte sense ERP */ | |
2501 | if ((erp->function == dasd_3990_erp_bus_out) || | |
2502 | (erp->function == dasd_3990_erp_action_1) || | |
2503 | (erp->function == dasd_3990_erp_action_4)) { | |
2504 | ||
2505 | erp = dasd_3990_erp_action_1(erp); | |
2506 | ||
eb6e199b SW |
2507 | } else if (erp->function == dasd_3990_erp_action_1_sec) { |
2508 | erp = dasd_3990_erp_action_1_sec(erp); | |
1da177e4 LT |
2509 | } else if (erp->function == dasd_3990_erp_action_5) { |
2510 | ||
2511 | /* retries have not been successful */ | |
2512 | /* prepare erp for retry on different channel path */ | |
2513 | erp = dasd_3990_erp_action_1(erp); | |
2514 | ||
f3eb5384 | 2515 | if (sense && !(sense[2] & DASD_SENSE_BIT_0)) { |
1da177e4 | 2516 | |
138c014d | 2517 | /* issue a Diagnostic Control command with an |
1da177e4 LT |
2518 | * Inhibit Write subcommand */ |
2519 | ||
2520 | switch (sense[25]) { | |
2521 | case 0x17: | |
2522 | case 0x57:{ /* controller */ | |
2523 | erp = dasd_3990_erp_DCTL(erp, 0x20); | |
2524 | break; | |
2525 | } | |
2526 | case 0x18: | |
2527 | case 0x58:{ /* channel path */ | |
2528 | erp = dasd_3990_erp_DCTL(erp, 0x40); | |
2529 | break; | |
2530 | } | |
2531 | case 0x19: | |
2532 | case 0x59:{ /* storage director */ | |
2533 | erp = dasd_3990_erp_DCTL(erp, 0x80); | |
2534 | break; | |
2535 | } | |
2536 | default: | |
fc19f381 | 2537 | DBF_DEV_EVENT(DBF_WARNING, device, |
1da177e4 LT |
2538 | "invalid subcommand modifier 0x%x " |
2539 | "for Diagnostic Control Command", | |
2540 | sense[25]); | |
2541 | } | |
2542 | } | |
2543 | ||
2544 | /* check for 32 byte sense ERP */ | |
f3eb5384 SW |
2545 | } else if (sense && |
2546 | ((erp->function == dasd_3990_erp_compound_retry) || | |
2547 | (erp->function == dasd_3990_erp_compound_path) || | |
2548 | (erp->function == dasd_3990_erp_compound_code) || | |
2549 | (erp->function == dasd_3990_erp_compound_config))) { | |
1da177e4 LT |
2550 | |
2551 | erp = dasd_3990_erp_compound(erp, sense); | |
2552 | ||
2553 | } else { | |
fc19f381 SH |
2554 | /* |
2555 | * No retry left and no additional special handling | |
2556 | * necessary | |
2557 | */ | |
2558 | dev_err(&device->cdev->dev, | |
2559 | "ERP %p has run out of retries and failed\n", erp); | |
1da177e4 LT |
2560 | |
2561 | erp->status = DASD_CQR_FAILED; | |
2562 | } | |
2563 | ||
2564 | return erp; | |
2565 | ||
2566 | } /* end dasd_3990_erp_further_erp */ | |
2567 | ||
2568 | /* | |
138c014d | 2569 | * DASD_3990_ERP_HANDLE_MATCH_ERP |
1da177e4 LT |
2570 | * |
2571 | * DESCRIPTION | |
2572 | * An error occurred again and an ERP has been detected which is already | |
138c014d | 2573 | * used to handle this error (e.g. retries). |
1da177e4 LT |
2574 | * All prior ERP's are asumed to be successful and therefore removed |
2575 | * from queue. | |
138c014d | 2576 | * If retry counter of matching erp is already 0, it is checked if further |
1da177e4 LT |
2577 | * action is needed (besides retry) or if the ERP has failed. |
2578 | * | |
2579 | * PARAMETER | |
2580 | * erp_head first ERP in ERP-chain | |
2581 | * erp ERP that handles the actual error. | |
2582 | * (matching erp) | |
2583 | * | |
2584 | * RETURN VALUES | |
2585 | * erp modified/additional ERP | |
2586 | */ | |
2587 | static struct dasd_ccw_req * | |
2588 | dasd_3990_erp_handle_match_erp(struct dasd_ccw_req *erp_head, | |
2589 | struct dasd_ccw_req *erp) | |
2590 | { | |
2591 | ||
8e09f215 | 2592 | struct dasd_device *device = erp_head->startdev; |
1da177e4 LT |
2593 | struct dasd_ccw_req *erp_done = erp_head; /* finished req */ |
2594 | struct dasd_ccw_req *erp_free = NULL; /* req to be freed */ | |
2595 | ||
2596 | /* loop over successful ERPs and remove them from chanq */ | |
2597 | while (erp_done != erp) { | |
2598 | ||
2599 | if (erp_done == NULL) /* end of chain reached */ | |
2600 | panic(PRINTK_HEADER "Programming error in ERP! The " | |
2601 | "original request was lost\n"); | |
2602 | ||
2603 | /* remove the request from the device queue */ | |
8e09f215 | 2604 | list_del(&erp_done->blocklist); |
1da177e4 LT |
2605 | |
2606 | erp_free = erp_done; | |
2607 | erp_done = erp_done->refers; | |
2608 | ||
2609 | /* free the finished erp request */ | |
8e09f215 | 2610 | dasd_free_erp_request(erp_free, erp_free->memdev); |
1da177e4 LT |
2611 | |
2612 | } /* end while */ | |
2613 | ||
2614 | if (erp->retries > 0) { | |
2615 | ||
f3eb5384 | 2616 | char *sense = dasd_get_sense(&erp->refers->irb); |
1da177e4 LT |
2617 | |
2618 | /* check for special retries */ | |
f3eb5384 | 2619 | if (sense && erp->function == dasd_3990_erp_action_4) { |
1da177e4 LT |
2620 | |
2621 | erp = dasd_3990_erp_action_4(erp, sense); | |
2622 | ||
f3eb5384 SW |
2623 | } else if (sense && |
2624 | erp->function == dasd_3990_erp_action_1B_32) { | |
1da177e4 LT |
2625 | |
2626 | erp = dasd_3990_update_1B(erp, sense); | |
2627 | ||
f3eb5384 | 2628 | } else if (sense && erp->function == dasd_3990_erp_int_req) { |
1da177e4 LT |
2629 | |
2630 | erp = dasd_3990_erp_int_req(erp); | |
2631 | ||
2632 | } else { | |
2633 | /* simple retry */ | |
fc19f381 | 2634 | DBF_DEV_EVENT(DBF_DEBUG, device, |
1da177e4 LT |
2635 | "%i retries left for erp %p", |
2636 | erp->retries, erp); | |
2637 | ||
2638 | /* handle the request again... */ | |
8e09f215 | 2639 | erp->status = DASD_CQR_FILLED; |
1da177e4 LT |
2640 | } |
2641 | ||
2642 | } else { | |
2643 | /* no retry left - check for further necessary action */ | |
2644 | /* if no further actions, handle rest as permanent error */ | |
2645 | erp = dasd_3990_erp_further_erp(erp); | |
2646 | } | |
2647 | ||
2648 | return erp; | |
2649 | ||
2650 | } /* end dasd_3990_erp_handle_match_erp */ | |
2651 | ||
2652 | /* | |
2653 | * DASD_3990_ERP_ACTION | |
2654 | * | |
2655 | * DESCRIPTION | |
5d67d164 | 2656 | * control routine for 3990 erp actions. |
1da177e4 LT |
2657 | * Has to be called with the queue lock (namely the s390_irq_lock) acquired. |
2658 | * | |
2659 | * PARAMETER | |
2660 | * cqr failed cqr (either original cqr or already an erp) | |
2661 | * | |
2662 | * RETURN VALUES | |
2663 | * erp erp-pointer to the head of the ERP action chain. | |
2664 | * This means: | |
2665 | * - either a ptr to an additional ERP cqr or | |
138c014d | 2666 | * - the original given cqr (which's status might |
1da177e4 LT |
2667 | * be modified) |
2668 | */ | |
2669 | struct dasd_ccw_req * | |
2670 | dasd_3990_erp_action(struct dasd_ccw_req * cqr) | |
2671 | { | |
1da177e4 | 2672 | struct dasd_ccw_req *erp = NULL; |
8e09f215 | 2673 | struct dasd_device *device = cqr->startdev; |
9575bf26 | 2674 | struct dasd_ccw_req *temp_erp = NULL; |
1da177e4 | 2675 | |
9575bf26 HH |
2676 | if (device->features & DASD_FEATURE_ERPLOG) { |
2677 | /* print current erp_chain */ | |
fc19f381 SH |
2678 | dev_err(&device->cdev->dev, |
2679 | "ERP chain at BEGINNING of ERP-ACTION\n"); | |
1da177e4 LT |
2680 | for (temp_erp = cqr; |
2681 | temp_erp != NULL; temp_erp = temp_erp->refers) { | |
2682 | ||
fc19f381 SH |
2683 | dev_err(&device->cdev->dev, |
2684 | "ERP %p (%02x) refers to %p\n", | |
1da177e4 LT |
2685 | temp_erp, temp_erp->status, |
2686 | temp_erp->refers); | |
2687 | } | |
2688 | } | |
1da177e4 | 2689 | |
73ac36ea | 2690 | /* double-check if current erp/cqr was successful */ |
f3eb5384 SW |
2691 | if ((scsw_cstat(&cqr->irb.scsw) == 0x00) && |
2692 | (scsw_dstat(&cqr->irb.scsw) == | |
23d805b6 | 2693 | (DEV_STAT_CHN_END | DEV_STAT_DEV_END))) { |
1da177e4 | 2694 | |
fc19f381 | 2695 | DBF_DEV_EVENT(DBF_DEBUG, device, |
1da177e4 LT |
2696 | "ERP called for successful request %p" |
2697 | " - NO ERP necessary", cqr); | |
2698 | ||
2699 | cqr->status = DASD_CQR_DONE; | |
2700 | ||
2701 | return cqr; | |
2702 | } | |
1da177e4 LT |
2703 | |
2704 | /* check if error happened before */ | |
2705 | erp = dasd_3990_erp_in_erp(cqr); | |
2706 | ||
2707 | if (erp == NULL) { | |
2708 | /* no matching erp found - set up erp */ | |
2709 | erp = dasd_3990_erp_additional_erp(cqr); | |
2710 | } else { | |
2711 | /* matching erp found - set all leading erp's to DONE */ | |
2712 | erp = dasd_3990_erp_handle_match_erp(cqr, erp); | |
2713 | } | |
2714 | ||
9575bf26 HH |
2715 | if (device->features & DASD_FEATURE_ERPLOG) { |
2716 | /* print current erp_chain */ | |
fc19f381 SH |
2717 | dev_err(&device->cdev->dev, |
2718 | "ERP chain at END of ERP-ACTION\n"); | |
1da177e4 LT |
2719 | for (temp_erp = erp; |
2720 | temp_erp != NULL; temp_erp = temp_erp->refers) { | |
2721 | ||
fc19f381 SH |
2722 | dev_err(&device->cdev->dev, |
2723 | "ERP %p (%02x) refers to %p\n", | |
1da177e4 LT |
2724 | temp_erp, temp_erp->status, |
2725 | temp_erp->refers); | |
2726 | } | |
2727 | } | |
1da177e4 | 2728 | |
8e09f215 SW |
2729 | /* enqueue ERP request if it's a new one */ |
2730 | if (list_empty(&erp->blocklist)) { | |
2731 | cqr->status = DASD_CQR_IN_ERP; | |
2732 | /* add erp request before the cqr */ | |
2733 | list_add_tail(&erp->blocklist, &cqr->blocklist); | |
1da177e4 LT |
2734 | } |
2735 | ||
fc19f381 SH |
2736 | |
2737 | ||
1da177e4 LT |
2738 | return erp; |
2739 | ||
2740 | } /* end dasd_3990_erp_action */ |