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Commit | Line | Data |
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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 | 12 | #include <linux/timer.h> |
1da177e4 | 13 | #include <asm/idals.h> |
1da177e4 LT |
14 | |
15 | #define PRINTK_HEADER "dasd_erp(3990): " | |
16 | ||
17 | #include "dasd_int.h" | |
18 | #include "dasd_eckd.h" | |
19 | ||
20 | ||
21 | struct DCTL_data { | |
22 | unsigned char subcommand; /* e.g Inhibit Write, Enable Write,... */ | |
23 | unsigned char modifier; /* Subcommand modifier */ | |
24 | unsigned short res; /* reserved */ | |
25 | } __attribute__ ((packed)); | |
26 | ||
1da177e4 | 27 | /* |
138c014d | 28 | ***************************************************************************** |
1da177e4 | 29 | * SECTION ERP HANDLING |
138c014d | 30 | ***************************************************************************** |
1da177e4 LT |
31 | */ |
32 | /* | |
138c014d | 33 | ***************************************************************************** |
1da177e4 | 34 | * 24 and 32 byte sense ERP functions |
138c014d | 35 | ***************************************************************************** |
1da177e4 LT |
36 | */ |
37 | ||
38 | /* | |
138c014d | 39 | * DASD_3990_ERP_CLEANUP |
1da177e4 LT |
40 | * |
41 | * DESCRIPTION | |
42 | * Removes the already build but not necessary ERP request and sets | |
43 | * the status of the original cqr / erp to the given (final) status | |
44 | * | |
45 | * PARAMETER | |
46 | * erp request to be blocked | |
138c014d | 47 | * final_status either DASD_CQR_DONE or DASD_CQR_FAILED |
1da177e4 LT |
48 | * |
49 | * RETURN VALUES | |
138c014d | 50 | * cqr original cqr |
1da177e4 LT |
51 | */ |
52 | static struct dasd_ccw_req * | |
53 | dasd_3990_erp_cleanup(struct dasd_ccw_req * erp, char final_status) | |
54 | { | |
55 | struct dasd_ccw_req *cqr = erp->refers; | |
56 | ||
8e09f215 | 57 | dasd_free_erp_request(erp, erp->memdev); |
1da177e4 LT |
58 | cqr->status = final_status; |
59 | return cqr; | |
60 | ||
61 | } /* end dasd_3990_erp_cleanup */ | |
62 | ||
63 | /* | |
138c014d | 64 | * DASD_3990_ERP_BLOCK_QUEUE |
1da177e4 LT |
65 | * |
66 | * DESCRIPTION | |
67 | * Block the given device request queue to prevent from further | |
68 | * processing until the started timer has expired or an related | |
69 | * interrupt was received. | |
70 | */ | |
eb6e199b | 71 | static void dasd_3990_erp_block_queue(struct dasd_ccw_req *erp, int expires) |
1da177e4 LT |
72 | { |
73 | ||
8e09f215 SW |
74 | struct dasd_device *device = erp->startdev; |
75 | unsigned long flags; | |
1da177e4 | 76 | |
fc19f381 | 77 | DBF_DEV_EVENT(DBF_INFO, device, |
1da177e4 LT |
78 | "blocking request queue for %is", expires/HZ); |
79 | ||
8e09f215 | 80 | spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); |
eb6e199b | 81 | dasd_device_set_stop_bits(device, DASD_STOPPED_PENDING); |
8e09f215 SW |
82 | spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); |
83 | erp->status = DASD_CQR_FILLED; | |
eb6e199b SW |
84 | if (erp->block) |
85 | dasd_block_set_timer(erp->block, expires); | |
86 | else | |
87 | dasd_device_set_timer(device, expires); | |
1da177e4 LT |
88 | } |
89 | ||
90 | /* | |
138c014d | 91 | * DASD_3990_ERP_INT_REQ |
1da177e4 LT |
92 | * |
93 | * DESCRIPTION | |
94 | * Handles 'Intervention Required' error. | |
95 | * This means either device offline or not installed. | |
96 | * | |
97 | * PARAMETER | |
98 | * erp current erp | |
99 | * RETURN VALUES | |
100 | * erp modified erp | |
101 | */ | |
102 | static struct dasd_ccw_req * | |
103 | dasd_3990_erp_int_req(struct dasd_ccw_req * erp) | |
104 | { | |
105 | ||
8e09f215 | 106 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
107 | |
108 | /* first time set initial retry counter and erp_function */ | |
109 | /* and retry once without blocking queue */ | |
110 | /* (this enables easier enqueing of the cqr) */ | |
111 | if (erp->function != dasd_3990_erp_int_req) { | |
112 | ||
113 | erp->retries = 256; | |
114 | erp->function = dasd_3990_erp_int_req; | |
115 | ||
116 | } else { | |
117 | ||
118 | /* issue a message and wait for 'device ready' interrupt */ | |
fc19f381 | 119 | dev_err(&device->cdev->dev, |
1da177e4 | 120 | "is offline or not installed - " |
fc19f381 | 121 | "INTERVENTION REQUIRED!!\n"); |
1da177e4 LT |
122 | |
123 | dasd_3990_erp_block_queue(erp, 60*HZ); | |
124 | } | |
125 | ||
126 | return erp; | |
127 | ||
128 | } /* end dasd_3990_erp_int_req */ | |
129 | ||
130 | /* | |
138c014d | 131 | * DASD_3990_ERP_ALTERNATE_PATH |
1da177e4 LT |
132 | * |
133 | * DESCRIPTION | |
134 | * Repeat the operation on a different channel path. | |
135 | * If all alternate paths have been tried, the request is posted with a | |
136 | * permanent error. | |
137 | * | |
138 | * PARAMETER | |
139 | * erp pointer to the current ERP | |
140 | * | |
141 | * RETURN VALUES | |
142 | * erp modified pointer to the ERP | |
143 | */ | |
144 | static void | |
145 | dasd_3990_erp_alternate_path(struct dasd_ccw_req * erp) | |
146 | { | |
8e09f215 | 147 | struct dasd_device *device = erp->startdev; |
1da177e4 | 148 | __u8 opm; |
8e09f215 | 149 | unsigned long flags; |
1da177e4 LT |
150 | |
151 | /* try alternate valid path */ | |
8e09f215 | 152 | spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); |
1da177e4 | 153 | opm = ccw_device_get_path_mask(device->cdev); |
8e09f215 | 154 | spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); |
1da177e4 LT |
155 | //FIXME: start with get_opm ? |
156 | if (erp->lpm == 0) | |
157 | erp->lpm = LPM_ANYPATH & ~(erp->irb.esw.esw0.sublog.lpum); | |
158 | else | |
159 | erp->lpm &= ~(erp->irb.esw.esw0.sublog.lpum); | |
160 | ||
161 | if ((erp->lpm & opm) != 0x00) { | |
162 | ||
fc19f381 | 163 | DBF_DEV_EVENT(DBF_WARNING, device, |
1da177e4 LT |
164 | "try alternate lpm=%x (lpum=%x / opm=%x)", |
165 | erp->lpm, erp->irb.esw.esw0.sublog.lpum, opm); | |
166 | ||
8e09f215 SW |
167 | /* reset status to submit the request again... */ |
168 | erp->status = DASD_CQR_FILLED; | |
6c5f57c7 | 169 | erp->retries = 10; |
1da177e4 | 170 | } else { |
fc19f381 SH |
171 | dev_err(&device->cdev->dev, |
172 | "The DASD cannot be reached on any path (lpum=%x" | |
173 | "/opm=%x)\n", erp->irb.esw.esw0.sublog.lpum, opm); | |
1da177e4 LT |
174 | |
175 | /* post request with permanent error */ | |
8e09f215 | 176 | erp->status = DASD_CQR_FAILED; |
1da177e4 LT |
177 | } |
178 | } /* end dasd_3990_erp_alternate_path */ | |
179 | ||
180 | /* | |
181 | * DASD_3990_ERP_DCTL | |
182 | * | |
183 | * DESCRIPTION | |
138c014d | 184 | * Setup cqr to do the Diagnostic Control (DCTL) command with an |
1da177e4 LT |
185 | * Inhibit Write subcommand (0x20) and the given modifier. |
186 | * | |
187 | * PARAMETER | |
188 | * erp pointer to the current (failed) ERP | |
189 | * modifier subcommand modifier | |
138c014d | 190 | * |
1da177e4 | 191 | * RETURN VALUES |
138c014d | 192 | * dctl_cqr pointer to NEW dctl_cqr |
1da177e4 LT |
193 | * |
194 | */ | |
195 | static struct dasd_ccw_req * | |
196 | dasd_3990_erp_DCTL(struct dasd_ccw_req * erp, char modifier) | |
197 | { | |
198 | ||
8e09f215 | 199 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
200 | struct DCTL_data *DCTL_data; |
201 | struct ccw1 *ccw; | |
202 | struct dasd_ccw_req *dctl_cqr; | |
203 | ||
204 | dctl_cqr = dasd_alloc_erp_request((char *) &erp->magic, 1, | |
8e09f215 SW |
205 | sizeof(struct DCTL_data), |
206 | device); | |
1da177e4 | 207 | if (IS_ERR(dctl_cqr)) { |
fc19f381 SH |
208 | dev_err(&device->cdev->dev, |
209 | "Unable to allocate DCTL-CQR\n"); | |
1da177e4 LT |
210 | erp->status = DASD_CQR_FAILED; |
211 | return erp; | |
212 | } | |
213 | ||
214 | DCTL_data = dctl_cqr->data; | |
215 | ||
216 | DCTL_data->subcommand = 0x02; /* Inhibit Write */ | |
217 | DCTL_data->modifier = modifier; | |
218 | ||
219 | ccw = dctl_cqr->cpaddr; | |
8e09f215 | 220 | memset(ccw, 0, sizeof(struct ccw1)); |
1da177e4 LT |
221 | ccw->cmd_code = CCW_CMD_DCTL; |
222 | ccw->count = 4; | |
223 | ccw->cda = (__u32)(addr_t) DCTL_data; | |
224 | dctl_cqr->function = dasd_3990_erp_DCTL; | |
225 | dctl_cqr->refers = erp; | |
8e09f215 SW |
226 | dctl_cqr->startdev = device; |
227 | dctl_cqr->memdev = device; | |
1da177e4 LT |
228 | dctl_cqr->magic = erp->magic; |
229 | dctl_cqr->expires = 5 * 60 * HZ; | |
230 | dctl_cqr->retries = 2; | |
231 | ||
232 | dctl_cqr->buildclk = get_clock(); | |
233 | ||
234 | dctl_cqr->status = DASD_CQR_FILLED; | |
235 | ||
236 | return dctl_cqr; | |
237 | ||
238 | } /* end dasd_3990_erp_DCTL */ | |
239 | ||
240 | /* | |
138c014d | 241 | * DASD_3990_ERP_ACTION_1 |
1da177e4 LT |
242 | * |
243 | * DESCRIPTION | |
244 | * Setup ERP to do the ERP action 1 (see Reference manual). | |
245 | * Repeat the operation on a different channel path. | |
eb6e199b SW |
246 | * As deviation from the recommended recovery action, we reset the path mask |
247 | * after we have tried each path and go through all paths a second time. | |
248 | * This will cover situations where only one path at a time is actually down, | |
249 | * but all paths fail and recover just with the same sequence and timing as | |
250 | * we try to use them (flapping links). | |
251 | * If all alternate paths have been tried twice, the request is posted with | |
252 | * a permanent error. | |
1da177e4 LT |
253 | * |
254 | * PARAMETER | |
255 | * erp pointer to the current ERP | |
256 | * | |
257 | * RETURN VALUES | |
258 | * erp pointer to the ERP | |
259 | * | |
260 | */ | |
eb6e199b | 261 | static struct dasd_ccw_req *dasd_3990_erp_action_1_sec(struct dasd_ccw_req *erp) |
1da177e4 | 262 | { |
eb6e199b SW |
263 | erp->function = dasd_3990_erp_action_1_sec; |
264 | dasd_3990_erp_alternate_path(erp); | |
265 | return erp; | |
266 | } | |
1da177e4 | 267 | |
eb6e199b SW |
268 | static struct dasd_ccw_req *dasd_3990_erp_action_1(struct dasd_ccw_req *erp) |
269 | { | |
1da177e4 | 270 | erp->function = dasd_3990_erp_action_1; |
1da177e4 | 271 | dasd_3990_erp_alternate_path(erp); |
eb6e199b SW |
272 | if (erp->status == DASD_CQR_FAILED) { |
273 | erp->status = DASD_CQR_FILLED; | |
274 | erp->retries = 10; | |
275 | erp->lpm = LPM_ANYPATH; | |
276 | erp->function = dasd_3990_erp_action_1_sec; | |
277 | } | |
1da177e4 | 278 | return erp; |
eb6e199b | 279 | } /* end dasd_3990_erp_action_1(b) */ |
1da177e4 LT |
280 | |
281 | /* | |
138c014d | 282 | * DASD_3990_ERP_ACTION_4 |
1da177e4 LT |
283 | * |
284 | * DESCRIPTION | |
285 | * Setup ERP to do the ERP action 4 (see Reference manual). | |
286 | * Set the current request to PENDING to block the CQR queue for that device | |
287 | * until the state change interrupt appears. | |
288 | * Use a timer (20 seconds) to retry the cqr if the interrupt is still | |
289 | * missing. | |
290 | * | |
291 | * PARAMETER | |
292 | * sense sense data of the actual error | |
293 | * erp pointer to the current ERP | |
294 | * | |
295 | * RETURN VALUES | |
296 | * erp pointer to the ERP | |
297 | * | |
298 | */ | |
299 | static struct dasd_ccw_req * | |
300 | dasd_3990_erp_action_4(struct dasd_ccw_req * erp, char *sense) | |
301 | { | |
302 | ||
8e09f215 | 303 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
304 | |
305 | /* first time set initial retry counter and erp_function */ | |
306 | /* and retry once without waiting for state change pending */ | |
307 | /* interrupt (this enables easier enqueing of the cqr) */ | |
308 | if (erp->function != dasd_3990_erp_action_4) { | |
309 | ||
fc19f381 | 310 | DBF_DEV_EVENT(DBF_INFO, device, "%s", |
1da177e4 LT |
311 | "dasd_3990_erp_action_4: first time retry"); |
312 | ||
313 | erp->retries = 256; | |
314 | erp->function = dasd_3990_erp_action_4; | |
315 | ||
316 | } else { | |
6c5f57c7 | 317 | if (sense && (sense[25] == 0x1D)) { /* state change pending */ |
1da177e4 | 318 | |
fc19f381 | 319 | DBF_DEV_EVENT(DBF_INFO, device, |
1da177e4 LT |
320 | "waiting for state change pending " |
321 | "interrupt, %d retries left", | |
322 | erp->retries); | |
138c014d | 323 | |
1da177e4 LT |
324 | dasd_3990_erp_block_queue(erp, 30*HZ); |
325 | ||
6c5f57c7 | 326 | } else if (sense && (sense[25] == 0x1E)) { /* busy */ |
fc19f381 | 327 | DBF_DEV_EVENT(DBF_INFO, device, |
1da177e4 LT |
328 | "busy - redriving request later, " |
329 | "%d retries left", | |
330 | erp->retries); | |
331 | dasd_3990_erp_block_queue(erp, HZ); | |
332 | } else { | |
1da177e4 | 333 | /* no state change pending - retry */ |
fc19f381 | 334 | DBF_DEV_EVENT(DBF_INFO, device, |
1da177e4 | 335 | "redriving request immediately, " |
138c014d | 336 | "%d retries left", |
1da177e4 | 337 | erp->retries); |
8e09f215 | 338 | erp->status = DASD_CQR_FILLED; |
1da177e4 LT |
339 | } |
340 | } | |
341 | ||
342 | return erp; | |
343 | ||
344 | } /* end dasd_3990_erp_action_4 */ | |
345 | ||
346 | /* | |
138c014d | 347 | ***************************************************************************** |
1da177e4 | 348 | * 24 byte sense ERP functions (only) |
138c014d | 349 | ***************************************************************************** |
1da177e4 LT |
350 | */ |
351 | ||
352 | /* | |
138c014d | 353 | * DASD_3990_ERP_ACTION_5 |
1da177e4 LT |
354 | * |
355 | * DESCRIPTION | |
356 | * Setup ERP to do the ERP action 5 (see Reference manual). | |
357 | * NOTE: Further handling is done in xxx_further_erp after the retries. | |
358 | * | |
359 | * PARAMETER | |
360 | * erp pointer to the current ERP | |
361 | * | |
362 | * RETURN VALUES | |
363 | * erp pointer to the ERP | |
364 | * | |
365 | */ | |
366 | static struct dasd_ccw_req * | |
367 | dasd_3990_erp_action_5(struct dasd_ccw_req * erp) | |
368 | { | |
369 | ||
370 | /* first of all retry */ | |
371 | erp->retries = 10; | |
372 | erp->function = dasd_3990_erp_action_5; | |
373 | ||
374 | return erp; | |
375 | ||
376 | } /* end dasd_3990_erp_action_5 */ | |
377 | ||
378 | /* | |
379 | * DASD_3990_HANDLE_ENV_DATA | |
380 | * | |
381 | * DESCRIPTION | |
382 | * Handles 24 byte 'Environmental data present'. | |
383 | * Does a analysis of the sense data (message Format) | |
384 | * and prints the error messages. | |
385 | * | |
386 | * PARAMETER | |
387 | * sense current sense data | |
138c014d | 388 | * |
1da177e4 LT |
389 | * RETURN VALUES |
390 | * void | |
391 | */ | |
392 | static void | |
393 | dasd_3990_handle_env_data(struct dasd_ccw_req * erp, char *sense) | |
394 | { | |
395 | ||
8e09f215 | 396 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
397 | char msg_format = (sense[7] & 0xF0); |
398 | char msg_no = (sense[7] & 0x0F); | |
fc19f381 | 399 | char errorstring[ERRORLENGTH]; |
1da177e4 LT |
400 | |
401 | switch (msg_format) { | |
402 | case 0x00: /* Format 0 - Program or System Checks */ | |
403 | ||
404 | if (sense[1] & 0x10) { /* check message to operator bit */ | |
405 | ||
406 | switch (msg_no) { | |
407 | case 0x00: /* No Message */ | |
408 | break; | |
409 | case 0x01: | |
fc19f381 SH |
410 | dev_warn(&device->cdev->dev, |
411 | "FORMAT 0 - Invalid Command\n"); | |
1da177e4 LT |
412 | break; |
413 | case 0x02: | |
fc19f381 | 414 | dev_warn(&device->cdev->dev, |
1da177e4 | 415 | "FORMAT 0 - Invalid Command " |
fc19f381 | 416 | "Sequence\n"); |
1da177e4 LT |
417 | break; |
418 | case 0x03: | |
fc19f381 | 419 | dev_warn(&device->cdev->dev, |
1da177e4 | 420 | "FORMAT 0 - CCW Count less than " |
fc19f381 | 421 | "required\n"); |
1da177e4 LT |
422 | break; |
423 | case 0x04: | |
fc19f381 SH |
424 | dev_warn(&device->cdev->dev, |
425 | "FORMAT 0 - Invalid Parameter\n"); | |
1da177e4 LT |
426 | break; |
427 | case 0x05: | |
fc19f381 SH |
428 | dev_warn(&device->cdev->dev, |
429 | "FORMAT 0 - Diagnostic of Special" | |
430 | " Command Violates File Mask\n"); | |
1da177e4 LT |
431 | break; |
432 | case 0x07: | |
fc19f381 | 433 | dev_warn(&device->cdev->dev, |
1da177e4 | 434 | "FORMAT 0 - Channel Returned with " |
fc19f381 | 435 | "Incorrect retry CCW\n"); |
1da177e4 LT |
436 | break; |
437 | case 0x08: | |
fc19f381 SH |
438 | dev_warn(&device->cdev->dev, |
439 | "FORMAT 0 - Reset Notification\n"); | |
1da177e4 LT |
440 | break; |
441 | case 0x09: | |
fc19f381 SH |
442 | dev_warn(&device->cdev->dev, |
443 | "FORMAT 0 - Storage Path Restart\n"); | |
1da177e4 LT |
444 | break; |
445 | case 0x0A: | |
fc19f381 | 446 | dev_warn(&device->cdev->dev, |
1da177e4 | 447 | "FORMAT 0 - Channel requested " |
fc19f381 | 448 | "... %02x\n", sense[8]); |
1da177e4 LT |
449 | break; |
450 | case 0x0B: | |
fc19f381 | 451 | dev_warn(&device->cdev->dev, |
1da177e4 | 452 | "FORMAT 0 - Invalid Defective/" |
fc19f381 | 453 | "Alternate Track Pointer\n"); |
1da177e4 LT |
454 | break; |
455 | case 0x0C: | |
fc19f381 | 456 | dev_warn(&device->cdev->dev, |
1da177e4 | 457 | "FORMAT 0 - DPS Installation " |
fc19f381 | 458 | "Check\n"); |
1da177e4 LT |
459 | break; |
460 | case 0x0E: | |
fc19f381 | 461 | dev_warn(&device->cdev->dev, |
1da177e4 | 462 | "FORMAT 0 - Command Invalid on " |
fc19f381 | 463 | "Secondary Address\n"); |
1da177e4 LT |
464 | break; |
465 | case 0x0F: | |
fc19f381 | 466 | dev_warn(&device->cdev->dev, |
1da177e4 | 467 | "FORMAT 0 - Status Not As " |
fc19f381 SH |
468 | "Required: reason %02x\n", |
469 | sense[8]); | |
1da177e4 LT |
470 | break; |
471 | default: | |
fc19f381 SH |
472 | dev_warn(&device->cdev->dev, |
473 | "FORMAT 0 - Reserved\n"); | |
1da177e4 LT |
474 | } |
475 | } else { | |
476 | switch (msg_no) { | |
477 | case 0x00: /* No Message */ | |
478 | break; | |
479 | case 0x01: | |
fc19f381 SH |
480 | dev_warn(&device->cdev->dev, |
481 | "FORMAT 0 - Device Error " | |
482 | "Source\n"); | |
1da177e4 LT |
483 | break; |
484 | case 0x02: | |
fc19f381 SH |
485 | dev_warn(&device->cdev->dev, |
486 | "FORMAT 0 - Reserved\n"); | |
1da177e4 LT |
487 | break; |
488 | case 0x03: | |
fc19f381 | 489 | dev_warn(&device->cdev->dev, |
1da177e4 | 490 | "FORMAT 0 - Device Fenced - " |
fc19f381 | 491 | "device = %02x\n", sense[4]); |
1da177e4 LT |
492 | break; |
493 | case 0x04: | |
fc19f381 | 494 | dev_warn(&device->cdev->dev, |
1da177e4 | 495 | "FORMAT 0 - Data Pinned for " |
fc19f381 | 496 | "Device\n"); |
1da177e4 LT |
497 | break; |
498 | default: | |
fc19f381 SH |
499 | dev_warn(&device->cdev->dev, |
500 | "FORMAT 0 - Reserved\n"); | |
1da177e4 LT |
501 | } |
502 | } | |
503 | break; | |
504 | ||
505 | case 0x10: /* Format 1 - Device Equipment Checks */ | |
506 | switch (msg_no) { | |
507 | case 0x00: /* No Message */ | |
508 | break; | |
509 | case 0x01: | |
fc19f381 | 510 | dev_warn(&device->cdev->dev, |
1da177e4 | 511 | "FORMAT 1 - Device Status 1 not as " |
fc19f381 | 512 | "expected\n"); |
1da177e4 LT |
513 | break; |
514 | case 0x03: | |
fc19f381 SH |
515 | dev_warn(&device->cdev->dev, |
516 | "FORMAT 1 - Index missing\n"); | |
1da177e4 LT |
517 | break; |
518 | case 0x04: | |
fc19f381 SH |
519 | dev_warn(&device->cdev->dev, |
520 | "FORMAT 1 - Interruption cannot be " | |
521 | "reset\n"); | |
1da177e4 LT |
522 | break; |
523 | case 0x05: | |
fc19f381 | 524 | dev_warn(&device->cdev->dev, |
1da177e4 | 525 | "FORMAT 1 - Device did not respond to " |
fc19f381 | 526 | "selection\n"); |
1da177e4 LT |
527 | break; |
528 | case 0x06: | |
fc19f381 | 529 | dev_warn(&device->cdev->dev, |
1da177e4 | 530 | "FORMAT 1 - Device check-2 error or Set " |
fc19f381 | 531 | "Sector is not complete\n"); |
1da177e4 LT |
532 | break; |
533 | case 0x07: | |
fc19f381 | 534 | dev_warn(&device->cdev->dev, |
1da177e4 | 535 | "FORMAT 1 - Head address does not " |
fc19f381 | 536 | "compare\n"); |
1da177e4 LT |
537 | break; |
538 | case 0x08: | |
fc19f381 SH |
539 | dev_warn(&device->cdev->dev, |
540 | "FORMAT 1 - Device status 1 not valid\n"); | |
1da177e4 LT |
541 | break; |
542 | case 0x09: | |
fc19f381 SH |
543 | dev_warn(&device->cdev->dev, |
544 | "FORMAT 1 - Device not ready\n"); | |
1da177e4 LT |
545 | break; |
546 | case 0x0A: | |
fc19f381 | 547 | dev_warn(&device->cdev->dev, |
1da177e4 | 548 | "FORMAT 1 - Track physical address did " |
fc19f381 | 549 | "not compare\n"); |
1da177e4 LT |
550 | break; |
551 | case 0x0B: | |
fc19f381 SH |
552 | dev_warn(&device->cdev->dev, |
553 | "FORMAT 1 - Missing device address bit\n"); | |
1da177e4 LT |
554 | break; |
555 | case 0x0C: | |
fc19f381 SH |
556 | dev_warn(&device->cdev->dev, |
557 | "FORMAT 1 - Drive motor switch is off\n"); | |
1da177e4 LT |
558 | break; |
559 | case 0x0D: | |
fc19f381 SH |
560 | dev_warn(&device->cdev->dev, |
561 | "FORMAT 1 - Seek incomplete\n"); | |
1da177e4 LT |
562 | break; |
563 | case 0x0E: | |
fc19f381 | 564 | dev_warn(&device->cdev->dev, |
1da177e4 | 565 | "FORMAT 1 - Cylinder address did not " |
fc19f381 | 566 | "compare\n"); |
1da177e4 LT |
567 | break; |
568 | case 0x0F: | |
fc19f381 | 569 | dev_warn(&device->cdev->dev, |
1da177e4 | 570 | "FORMAT 1 - Offset active cannot be " |
fc19f381 | 571 | "reset\n"); |
1da177e4 LT |
572 | break; |
573 | default: | |
fc19f381 SH |
574 | dev_warn(&device->cdev->dev, |
575 | "FORMAT 1 - Reserved\n"); | |
1da177e4 LT |
576 | } |
577 | break; | |
578 | ||
579 | case 0x20: /* Format 2 - 3990 Equipment Checks */ | |
580 | switch (msg_no) { | |
581 | case 0x08: | |
fc19f381 SH |
582 | dev_warn(&device->cdev->dev, |
583 | "FORMAT 2 - 3990 check-2 error\n"); | |
1da177e4 LT |
584 | break; |
585 | case 0x0E: | |
fc19f381 SH |
586 | dev_warn(&device->cdev->dev, |
587 | "FORMAT 2 - Support facility errors\n"); | |
1da177e4 LT |
588 | break; |
589 | case 0x0F: | |
fc19f381 SH |
590 | dev_warn(&device->cdev->dev, |
591 | "FORMAT 2 - Microcode detected error " | |
592 | "%02x\n", | |
593 | sense[8]); | |
1da177e4 LT |
594 | break; |
595 | default: | |
fc19f381 SH |
596 | dev_warn(&device->cdev->dev, |
597 | "FORMAT 2 - Reserved\n"); | |
1da177e4 LT |
598 | } |
599 | break; | |
600 | ||
601 | case 0x30: /* Format 3 - 3990 Control Checks */ | |
602 | switch (msg_no) { | |
603 | case 0x0F: | |
fc19f381 SH |
604 | dev_warn(&device->cdev->dev, |
605 | "FORMAT 3 - Allegiance terminated\n"); | |
1da177e4 LT |
606 | break; |
607 | default: | |
fc19f381 SH |
608 | dev_warn(&device->cdev->dev, |
609 | "FORMAT 3 - Reserved\n"); | |
1da177e4 LT |
610 | } |
611 | break; | |
612 | ||
613 | case 0x40: /* Format 4 - Data Checks */ | |
614 | switch (msg_no) { | |
615 | case 0x00: | |
fc19f381 SH |
616 | dev_warn(&device->cdev->dev, |
617 | "FORMAT 4 - Home address area error\n"); | |
1da177e4 LT |
618 | break; |
619 | case 0x01: | |
fc19f381 SH |
620 | dev_warn(&device->cdev->dev, |
621 | "FORMAT 4 - Count area error\n"); | |
1da177e4 LT |
622 | break; |
623 | case 0x02: | |
fc19f381 SH |
624 | dev_warn(&device->cdev->dev, |
625 | "FORMAT 4 - Key area error\n"); | |
1da177e4 LT |
626 | break; |
627 | case 0x03: | |
fc19f381 SH |
628 | dev_warn(&device->cdev->dev, |
629 | "FORMAT 4 - Data area error\n"); | |
1da177e4 LT |
630 | break; |
631 | case 0x04: | |
fc19f381 | 632 | dev_warn(&device->cdev->dev, |
1da177e4 | 633 | "FORMAT 4 - No sync byte in home address " |
fc19f381 | 634 | "area\n"); |
1da177e4 LT |
635 | break; |
636 | case 0x05: | |
fc19f381 | 637 | dev_warn(&device->cdev->dev, |
1da177e4 | 638 | "FORMAT 4 - No sync byte in count address " |
fc19f381 | 639 | "area\n"); |
1da177e4 LT |
640 | break; |
641 | case 0x06: | |
fc19f381 SH |
642 | dev_warn(&device->cdev->dev, |
643 | "FORMAT 4 - No sync byte in key area\n"); | |
1da177e4 LT |
644 | break; |
645 | case 0x07: | |
fc19f381 SH |
646 | dev_warn(&device->cdev->dev, |
647 | "FORMAT 4 - No sync byte in data area\n"); | |
1da177e4 LT |
648 | break; |
649 | case 0x08: | |
fc19f381 | 650 | dev_warn(&device->cdev->dev, |
1da177e4 | 651 | "FORMAT 4 - Home address area error; " |
fc19f381 | 652 | "offset active\n"); |
1da177e4 LT |
653 | break; |
654 | case 0x09: | |
fc19f381 | 655 | dev_warn(&device->cdev->dev, |
1da177e4 | 656 | "FORMAT 4 - Count area error; offset " |
fc19f381 | 657 | "active\n"); |
1da177e4 LT |
658 | break; |
659 | case 0x0A: | |
fc19f381 | 660 | dev_warn(&device->cdev->dev, |
1da177e4 | 661 | "FORMAT 4 - Key area error; offset " |
fc19f381 | 662 | "active\n"); |
1da177e4 LT |
663 | break; |
664 | case 0x0B: | |
fc19f381 | 665 | dev_warn(&device->cdev->dev, |
1da177e4 | 666 | "FORMAT 4 - Data area error; " |
fc19f381 | 667 | "offset active\n"); |
1da177e4 LT |
668 | break; |
669 | case 0x0C: | |
fc19f381 | 670 | dev_warn(&device->cdev->dev, |
1da177e4 | 671 | "FORMAT 4 - No sync byte in home " |
fc19f381 | 672 | "address area; offset active\n"); |
1da177e4 LT |
673 | break; |
674 | case 0x0D: | |
fc19f381 | 675 | dev_warn(&device->cdev->dev, |
1da177e4 | 676 | "FORMAT 4 - No syn byte in count " |
fc19f381 | 677 | "address area; offset active\n"); |
1da177e4 LT |
678 | break; |
679 | case 0x0E: | |
fc19f381 | 680 | dev_warn(&device->cdev->dev, |
1da177e4 | 681 | "FORMAT 4 - No sync byte in key area; " |
fc19f381 | 682 | "offset active\n"); |
1da177e4 LT |
683 | break; |
684 | case 0x0F: | |
fc19f381 | 685 | dev_warn(&device->cdev->dev, |
1da177e4 | 686 | "FORMAT 4 - No syn byte in data area; " |
fc19f381 | 687 | "offset active\n"); |
1da177e4 LT |
688 | break; |
689 | default: | |
fc19f381 SH |
690 | dev_warn(&device->cdev->dev, |
691 | "FORMAT 4 - Reserved\n"); | |
1da177e4 LT |
692 | } |
693 | break; | |
694 | ||
695 | case 0x50: /* Format 5 - Data Check with displacement information */ | |
696 | switch (msg_no) { | |
697 | case 0x00: | |
fc19f381 | 698 | dev_warn(&device->cdev->dev, |
1da177e4 | 699 | "FORMAT 5 - Data Check in the " |
fc19f381 | 700 | "home address area\n"); |
1da177e4 LT |
701 | break; |
702 | case 0x01: | |
fc19f381 SH |
703 | dev_warn(&device->cdev->dev, |
704 | "FORMAT 5 - Data Check in the count " | |
705 | "area\n"); | |
1da177e4 LT |
706 | break; |
707 | case 0x02: | |
fc19f381 SH |
708 | dev_warn(&device->cdev->dev, |
709 | "FORMAT 5 - Data Check in the key area\n"); | |
1da177e4 LT |
710 | break; |
711 | case 0x03: | |
fc19f381 SH |
712 | dev_warn(&device->cdev->dev, |
713 | "FORMAT 5 - Data Check in the data " | |
714 | "area\n"); | |
1da177e4 LT |
715 | break; |
716 | case 0x08: | |
fc19f381 | 717 | dev_warn(&device->cdev->dev, |
1da177e4 | 718 | "FORMAT 5 - Data Check in the " |
fc19f381 | 719 | "home address area; offset active\n"); |
1da177e4 LT |
720 | break; |
721 | case 0x09: | |
fc19f381 | 722 | dev_warn(&device->cdev->dev, |
1da177e4 | 723 | "FORMAT 5 - Data Check in the count area; " |
fc19f381 | 724 | "offset active\n"); |
1da177e4 LT |
725 | break; |
726 | case 0x0A: | |
fc19f381 | 727 | dev_warn(&device->cdev->dev, |
1da177e4 | 728 | "FORMAT 5 - Data Check in the key area; " |
fc19f381 | 729 | "offset active\n"); |
1da177e4 LT |
730 | break; |
731 | case 0x0B: | |
fc19f381 | 732 | dev_warn(&device->cdev->dev, |
1da177e4 | 733 | "FORMAT 5 - Data Check in the data area; " |
fc19f381 | 734 | "offset active\n"); |
1da177e4 LT |
735 | break; |
736 | default: | |
fc19f381 SH |
737 | dev_warn(&device->cdev->dev, |
738 | "FORMAT 5 - Reserved\n"); | |
1da177e4 LT |
739 | } |
740 | break; | |
741 | ||
742 | case 0x60: /* Format 6 - Usage Statistics/Overrun Errors */ | |
743 | switch (msg_no) { | |
744 | case 0x00: | |
fc19f381 SH |
745 | dev_warn(&device->cdev->dev, |
746 | "FORMAT 6 - Overrun on channel A\n"); | |
1da177e4 LT |
747 | break; |
748 | case 0x01: | |
fc19f381 SH |
749 | dev_warn(&device->cdev->dev, |
750 | "FORMAT 6 - Overrun on channel B\n"); | |
1da177e4 LT |
751 | break; |
752 | case 0x02: | |
fc19f381 SH |
753 | dev_warn(&device->cdev->dev, |
754 | "FORMAT 6 - Overrun on channel C\n"); | |
1da177e4 LT |
755 | break; |
756 | case 0x03: | |
fc19f381 SH |
757 | dev_warn(&device->cdev->dev, |
758 | "FORMAT 6 - Overrun on channel D\n"); | |
1da177e4 LT |
759 | break; |
760 | case 0x04: | |
fc19f381 SH |
761 | dev_warn(&device->cdev->dev, |
762 | "FORMAT 6 - Overrun on channel E\n"); | |
1da177e4 LT |
763 | break; |
764 | case 0x05: | |
fc19f381 SH |
765 | dev_warn(&device->cdev->dev, |
766 | "FORMAT 6 - Overrun on channel F\n"); | |
1da177e4 LT |
767 | break; |
768 | case 0x06: | |
fc19f381 SH |
769 | dev_warn(&device->cdev->dev, |
770 | "FORMAT 6 - Overrun on channel G\n"); | |
1da177e4 LT |
771 | break; |
772 | case 0x07: | |
fc19f381 SH |
773 | dev_warn(&device->cdev->dev, |
774 | "FORMAT 6 - Overrun on channel H\n"); | |
1da177e4 LT |
775 | break; |
776 | default: | |
fc19f381 SH |
777 | dev_warn(&device->cdev->dev, |
778 | "FORMAT 6 - Reserved\n"); | |
1da177e4 LT |
779 | } |
780 | break; | |
781 | ||
782 | case 0x70: /* Format 7 - Device Connection Control Checks */ | |
783 | switch (msg_no) { | |
784 | case 0x00: | |
fc19f381 | 785 | dev_warn(&device->cdev->dev, |
1da177e4 | 786 | "FORMAT 7 - RCC initiated by a connection " |
fc19f381 | 787 | "check alert\n"); |
1da177e4 LT |
788 | break; |
789 | case 0x01: | |
fc19f381 | 790 | dev_warn(&device->cdev->dev, |
1da177e4 | 791 | "FORMAT 7 - RCC 1 sequence not " |
fc19f381 | 792 | "successful\n"); |
1da177e4 LT |
793 | break; |
794 | case 0x02: | |
fc19f381 | 795 | dev_warn(&device->cdev->dev, |
1da177e4 | 796 | "FORMAT 7 - RCC 1 and RCC 2 sequences not " |
fc19f381 | 797 | "successful\n"); |
1da177e4 LT |
798 | break; |
799 | case 0x03: | |
fc19f381 | 800 | dev_warn(&device->cdev->dev, |
1da177e4 | 801 | "FORMAT 7 - Invalid tag-in during " |
fc19f381 | 802 | "selection sequence\n"); |
1da177e4 LT |
803 | break; |
804 | case 0x04: | |
fc19f381 SH |
805 | dev_warn(&device->cdev->dev, |
806 | "FORMAT 7 - extra RCC required\n"); | |
1da177e4 LT |
807 | break; |
808 | case 0x05: | |
fc19f381 | 809 | dev_warn(&device->cdev->dev, |
1da177e4 | 810 | "FORMAT 7 - Invalid DCC selection " |
fc19f381 | 811 | "response or timeout\n"); |
1da177e4 LT |
812 | break; |
813 | case 0x06: | |
fc19f381 | 814 | dev_warn(&device->cdev->dev, |
1da177e4 | 815 | "FORMAT 7 - Missing end operation; device " |
fc19f381 | 816 | "transfer complete\n"); |
1da177e4 LT |
817 | break; |
818 | case 0x07: | |
fc19f381 | 819 | dev_warn(&device->cdev->dev, |
1da177e4 | 820 | "FORMAT 7 - Missing end operation; device " |
fc19f381 | 821 | "transfer incomplete\n"); |
1da177e4 LT |
822 | break; |
823 | case 0x08: | |
fc19f381 | 824 | dev_warn(&device->cdev->dev, |
1da177e4 | 825 | "FORMAT 7 - Invalid tag-in for an " |
fc19f381 | 826 | "immediate command sequence\n"); |
1da177e4 LT |
827 | break; |
828 | case 0x09: | |
fc19f381 | 829 | dev_warn(&device->cdev->dev, |
1da177e4 | 830 | "FORMAT 7 - Invalid tag-in for an " |
fc19f381 | 831 | "extended command sequence\n"); |
1da177e4 LT |
832 | break; |
833 | case 0x0A: | |
fc19f381 | 834 | dev_warn(&device->cdev->dev, |
1da177e4 | 835 | "FORMAT 7 - 3990 microcode time out when " |
fc19f381 | 836 | "stopping selection\n"); |
1da177e4 LT |
837 | break; |
838 | case 0x0B: | |
fc19f381 | 839 | dev_warn(&device->cdev->dev, |
1da177e4 | 840 | "FORMAT 7 - No response to selection " |
fc19f381 | 841 | "after a poll interruption\n"); |
1da177e4 LT |
842 | break; |
843 | case 0x0C: | |
fc19f381 | 844 | dev_warn(&device->cdev->dev, |
1da177e4 | 845 | "FORMAT 7 - Permanent path error (DASD " |
fc19f381 | 846 | "controller not available)\n"); |
1da177e4 LT |
847 | break; |
848 | case 0x0D: | |
fc19f381 | 849 | dev_warn(&device->cdev->dev, |
1da177e4 | 850 | "FORMAT 7 - DASD controller not available" |
fc19f381 | 851 | " on disconnected command chain\n"); |
1da177e4 LT |
852 | break; |
853 | default: | |
fc19f381 SH |
854 | dev_warn(&device->cdev->dev, |
855 | "FORMAT 7 - Reserved\n"); | |
1da177e4 LT |
856 | } |
857 | break; | |
858 | ||
859 | case 0x80: /* Format 8 - Additional Device Equipment Checks */ | |
860 | switch (msg_no) { | |
861 | case 0x00: /* No Message */ | |
862 | case 0x01: | |
fc19f381 | 863 | dev_warn(&device->cdev->dev, |
1da177e4 | 864 | "FORMAT 8 - Error correction code " |
fc19f381 | 865 | "hardware fault\n"); |
1da177e4 LT |
866 | break; |
867 | case 0x03: | |
fc19f381 | 868 | dev_warn(&device->cdev->dev, |
1da177e4 | 869 | "FORMAT 8 - Unexpected end operation " |
fc19f381 | 870 | "response code\n"); |
1da177e4 LT |
871 | break; |
872 | case 0x04: | |
fc19f381 | 873 | dev_warn(&device->cdev->dev, |
1da177e4 | 874 | "FORMAT 8 - End operation with transfer " |
fc19f381 | 875 | "count not zero\n"); |
1da177e4 LT |
876 | break; |
877 | case 0x05: | |
fc19f381 | 878 | dev_warn(&device->cdev->dev, |
1da177e4 | 879 | "FORMAT 8 - End operation with transfer " |
fc19f381 | 880 | "count zero\n"); |
1da177e4 LT |
881 | break; |
882 | case 0x06: | |
fc19f381 | 883 | dev_warn(&device->cdev->dev, |
1da177e4 | 884 | "FORMAT 8 - DPS checks after a system " |
fc19f381 | 885 | "reset or selective reset\n"); |
1da177e4 LT |
886 | break; |
887 | case 0x07: | |
fc19f381 SH |
888 | dev_warn(&device->cdev->dev, |
889 | "FORMAT 8 - DPS cannot be filled\n"); | |
1da177e4 LT |
890 | break; |
891 | case 0x08: | |
fc19f381 | 892 | dev_warn(&device->cdev->dev, |
1da177e4 | 893 | "FORMAT 8 - Short busy time-out during " |
fc19f381 | 894 | "device selection\n"); |
1da177e4 LT |
895 | break; |
896 | case 0x09: | |
fc19f381 | 897 | dev_warn(&device->cdev->dev, |
1da177e4 | 898 | "FORMAT 8 - DASD controller failed to " |
fc19f381 | 899 | "set or reset the long busy latch\n"); |
1da177e4 LT |
900 | break; |
901 | case 0x0A: | |
fc19f381 | 902 | dev_warn(&device->cdev->dev, |
1da177e4 | 903 | "FORMAT 8 - No interruption from device " |
fc19f381 | 904 | "during a command chain\n"); |
1da177e4 LT |
905 | break; |
906 | default: | |
fc19f381 SH |
907 | dev_warn(&device->cdev->dev, |
908 | "FORMAT 8 - Reserved\n"); | |
1da177e4 LT |
909 | } |
910 | break; | |
911 | ||
912 | case 0x90: /* Format 9 - Device Read, Write, and Seek Checks */ | |
913 | switch (msg_no) { | |
914 | case 0x00: | |
915 | break; /* No Message */ | |
916 | case 0x06: | |
fc19f381 SH |
917 | dev_warn(&device->cdev->dev, |
918 | "FORMAT 9 - Device check-2 error\n"); | |
1da177e4 LT |
919 | break; |
920 | case 0x07: | |
fc19f381 SH |
921 | dev_warn(&device->cdev->dev, |
922 | "FORMAT 9 - Head address did not " | |
923 | "compare\n"); | |
1da177e4 LT |
924 | break; |
925 | case 0x0A: | |
fc19f381 | 926 | dev_warn(&device->cdev->dev, |
1da177e4 | 927 | "FORMAT 9 - Track physical address did " |
fc19f381 | 928 | "not compare while oriented\n"); |
1da177e4 LT |
929 | break; |
930 | case 0x0E: | |
fc19f381 | 931 | dev_warn(&device->cdev->dev, |
1da177e4 | 932 | "FORMAT 9 - Cylinder address did not " |
fc19f381 | 933 | "compare\n"); |
1da177e4 LT |
934 | break; |
935 | default: | |
fc19f381 SH |
936 | dev_warn(&device->cdev->dev, |
937 | "FORMAT 9 - Reserved\n"); | |
1da177e4 LT |
938 | } |
939 | break; | |
940 | ||
941 | case 0xF0: /* Format F - Cache Storage Checks */ | |
942 | switch (msg_no) { | |
943 | case 0x00: | |
fc19f381 SH |
944 | dev_warn(&device->cdev->dev, |
945 | "FORMAT F - Operation Terminated\n"); | |
1da177e4 LT |
946 | break; |
947 | case 0x01: | |
fc19f381 SH |
948 | dev_warn(&device->cdev->dev, |
949 | "FORMAT F - Subsystem Processing Error\n"); | |
1da177e4 LT |
950 | break; |
951 | case 0x02: | |
fc19f381 | 952 | dev_warn(&device->cdev->dev, |
1da177e4 | 953 | "FORMAT F - Cache or nonvolatile storage " |
fc19f381 | 954 | "equipment failure\n"); |
1da177e4 LT |
955 | break; |
956 | case 0x04: | |
fc19f381 SH |
957 | dev_warn(&device->cdev->dev, |
958 | "FORMAT F - Caching terminated\n"); | |
1da177e4 LT |
959 | break; |
960 | case 0x06: | |
fc19f381 | 961 | dev_warn(&device->cdev->dev, |
1da177e4 | 962 | "FORMAT F - Cache fast write access not " |
fc19f381 | 963 | "authorized\n"); |
1da177e4 LT |
964 | break; |
965 | case 0x07: | |
fc19f381 SH |
966 | dev_warn(&device->cdev->dev, |
967 | "FORMAT F - Track format incorrect\n"); | |
1da177e4 LT |
968 | break; |
969 | case 0x09: | |
fc19f381 SH |
970 | dev_warn(&device->cdev->dev, |
971 | "FORMAT F - Caching reinitiated\n"); | |
1da177e4 LT |
972 | break; |
973 | case 0x0A: | |
fc19f381 | 974 | dev_warn(&device->cdev->dev, |
1da177e4 | 975 | "FORMAT F - Nonvolatile storage " |
fc19f381 | 976 | "terminated\n"); |
1da177e4 LT |
977 | break; |
978 | case 0x0B: | |
fc19f381 SH |
979 | dev_warn(&device->cdev->dev, |
980 | "FORMAT F - Volume is suspended duplex\n"); | |
20c64468 SW |
981 | /* call extended error reporting (EER) */ |
982 | dasd_eer_write(device, erp->refers, | |
983 | DASD_EER_PPRCSUSPEND); | |
1da177e4 LT |
984 | break; |
985 | case 0x0C: | |
fc19f381 SH |
986 | dev_warn(&device->cdev->dev, |
987 | "FORMAT F - Subsystem status cannot be " | |
988 | "determined\n"); | |
1da177e4 LT |
989 | break; |
990 | case 0x0D: | |
fc19f381 | 991 | dev_warn(&device->cdev->dev, |
1da177e4 | 992 | "FORMAT F - Caching status reset to " |
fc19f381 | 993 | "default\n"); |
1da177e4 LT |
994 | break; |
995 | case 0x0E: | |
fc19f381 SH |
996 | dev_warn(&device->cdev->dev, |
997 | "FORMAT F - DASD Fast Write inhibited\n"); | |
1da177e4 LT |
998 | break; |
999 | default: | |
fc19f381 SH |
1000 | dev_warn(&device->cdev->dev, |
1001 | "FORMAT D - Reserved\n"); | |
1da177e4 LT |
1002 | } |
1003 | break; | |
1004 | ||
fc19f381 SH |
1005 | default: /* unknown message format - should not happen |
1006 | internal error 03 - unknown message format */ | |
1007 | snprintf(errorstring, ERRORLENGTH, "03 %x02", msg_format); | |
1008 | dev_err(&device->cdev->dev, | |
1009 | "An error occurred in the DASD device driver, " | |
1010 | "reason=%s\n", errorstring); | |
1da177e4 LT |
1011 | break; |
1012 | } /* end switch message format */ | |
1013 | ||
1014 | } /* end dasd_3990_handle_env_data */ | |
1015 | ||
1016 | /* | |
1017 | * DASD_3990_ERP_COM_REJ | |
1018 | * | |
1019 | * DESCRIPTION | |
1020 | * Handles 24 byte 'Command Reject' error. | |
1021 | * | |
1022 | * PARAMETER | |
1023 | * erp current erp_head | |
1024 | * sense current sense data | |
138c014d | 1025 | * |
1da177e4 | 1026 | * RETURN VALUES |
138c014d | 1027 | * erp 'new' erp_head - pointer to new ERP |
1da177e4 LT |
1028 | */ |
1029 | static struct dasd_ccw_req * | |
1030 | dasd_3990_erp_com_rej(struct dasd_ccw_req * erp, char *sense) | |
1031 | { | |
1032 | ||
8e09f215 | 1033 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1034 | |
1035 | erp->function = dasd_3990_erp_com_rej; | |
1036 | ||
1037 | /* env data present (ACTION 10 - retry should work) */ | |
1038 | if (sense[2] & SNS2_ENV_DATA_PRESENT) { | |
1039 | ||
fc19f381 | 1040 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1041 | "Command Reject - environmental data present"); |
1042 | ||
1043 | dasd_3990_handle_env_data(erp, sense); | |
1044 | ||
1045 | erp->retries = 5; | |
1046 | ||
33b62a30 SW |
1047 | } else if (sense[1] & SNS1_WRITE_INHIBITED) { |
1048 | dev_err(&device->cdev->dev, "An I/O request was rejected" | |
1049 | " because writing is inhibited\n"); | |
1050 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
1da177e4 | 1051 | } else { |
fc19f381 SH |
1052 | /* fatal error - set status to FAILED |
1053 | internal error 09 - Command Reject */ | |
1054 | dev_err(&device->cdev->dev, "An error occurred in the DASD " | |
1055 | "device driver, reason=%s\n", "09"); | |
1da177e4 LT |
1056 | |
1057 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
1058 | } | |
1059 | ||
1060 | return erp; | |
1061 | ||
1062 | } /* end dasd_3990_erp_com_rej */ | |
1063 | ||
1064 | /* | |
138c014d | 1065 | * DASD_3990_ERP_BUS_OUT |
1da177e4 LT |
1066 | * |
1067 | * DESCRIPTION | |
1068 | * Handles 24 byte 'Bus Out Parity Check' error. | |
1069 | * | |
1070 | * PARAMETER | |
1071 | * erp current erp_head | |
1072 | * RETURN VALUES | |
1073 | * erp new erp_head - pointer to new ERP | |
1074 | */ | |
1075 | static struct dasd_ccw_req * | |
1076 | dasd_3990_erp_bus_out(struct dasd_ccw_req * erp) | |
1077 | { | |
1078 | ||
8e09f215 | 1079 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1080 | |
1081 | /* first time set initial retry counter and erp_function */ | |
1082 | /* and retry once without blocking queue */ | |
1083 | /* (this enables easier enqueing of the cqr) */ | |
1084 | if (erp->function != dasd_3990_erp_bus_out) { | |
1085 | erp->retries = 256; | |
1086 | erp->function = dasd_3990_erp_bus_out; | |
1087 | ||
1088 | } else { | |
1089 | ||
1090 | /* issue a message and wait for 'device ready' interrupt */ | |
fc19f381 | 1091 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1092 | "bus out parity error or BOPC requested by " |
1093 | "channel"); | |
1094 | ||
1095 | dasd_3990_erp_block_queue(erp, 60*HZ); | |
1096 | ||
1097 | } | |
1098 | ||
1099 | return erp; | |
1100 | ||
1101 | } /* end dasd_3990_erp_bus_out */ | |
1102 | ||
1103 | /* | |
1104 | * DASD_3990_ERP_EQUIP_CHECK | |
1105 | * | |
1106 | * DESCRIPTION | |
1107 | * Handles 24 byte 'Equipment Check' error. | |
1108 | * | |
1109 | * PARAMETER | |
1110 | * erp current erp_head | |
1111 | * RETURN VALUES | |
1112 | * erp new erp_head - pointer to new ERP | |
1113 | */ | |
1114 | static struct dasd_ccw_req * | |
1115 | dasd_3990_erp_equip_check(struct dasd_ccw_req * erp, char *sense) | |
1116 | { | |
1117 | ||
8e09f215 | 1118 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1119 | |
1120 | erp->function = dasd_3990_erp_equip_check; | |
1121 | ||
1122 | if (sense[1] & SNS1_WRITE_INHIBITED) { | |
fc19f381 SH |
1123 | dev_info(&device->cdev->dev, |
1124 | "Write inhibited path encountered\n"); | |
1da177e4 | 1125 | |
fc19f381 SH |
1126 | /* vary path offline |
1127 | internal error 04 - Path should be varied off-line.*/ | |
1128 | dev_err(&device->cdev->dev, "An error occurred in the DASD " | |
1129 | "device driver, reason=%s\n", "04"); | |
1da177e4 LT |
1130 | |
1131 | erp = dasd_3990_erp_action_1(erp); | |
1132 | ||
1133 | } else if (sense[2] & SNS2_ENV_DATA_PRESENT) { | |
1134 | ||
fc19f381 | 1135 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1136 | "Equipment Check - " "environmental data present"); |
1137 | ||
1138 | dasd_3990_handle_env_data(erp, sense); | |
1139 | ||
1140 | erp = dasd_3990_erp_action_4(erp, sense); | |
1141 | ||
1142 | } else if (sense[1] & SNS1_PERM_ERR) { | |
1143 | ||
fc19f381 | 1144 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1145 | "Equipment Check - retry exhausted or " |
1146 | "undesirable"); | |
1147 | ||
1148 | erp = dasd_3990_erp_action_1(erp); | |
1149 | ||
1150 | } else { | |
1151 | /* all other equipment checks - Action 5 */ | |
1152 | /* rest is done when retries == 0 */ | |
fc19f381 | 1153 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1154 | "Equipment check or processing error"); |
1155 | ||
1156 | erp = dasd_3990_erp_action_5(erp); | |
1157 | } | |
1da177e4 LT |
1158 | return erp; |
1159 | ||
1160 | } /* end dasd_3990_erp_equip_check */ | |
1161 | ||
1162 | /* | |
1163 | * DASD_3990_ERP_DATA_CHECK | |
1164 | * | |
1165 | * DESCRIPTION | |
1166 | * Handles 24 byte 'Data Check' error. | |
1167 | * | |
1168 | * PARAMETER | |
1169 | * erp current erp_head | |
1170 | * RETURN VALUES | |
1171 | * erp new erp_head - pointer to new ERP | |
1172 | */ | |
1173 | static struct dasd_ccw_req * | |
1174 | dasd_3990_erp_data_check(struct dasd_ccw_req * erp, char *sense) | |
1175 | { | |
1176 | ||
8e09f215 | 1177 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1178 | |
1179 | erp->function = dasd_3990_erp_data_check; | |
1180 | ||
1181 | if (sense[2] & SNS2_CORRECTABLE) { /* correctable data check */ | |
1182 | ||
1183 | /* issue message that the data has been corrected */ | |
fc19f381 | 1184 | dev_emerg(&device->cdev->dev, |
1da177e4 | 1185 | "Data recovered during retry with PCI " |
fc19f381 | 1186 | "fetch mode active\n"); |
1da177e4 LT |
1187 | |
1188 | /* not possible to handle this situation in Linux */ | |
1189 | panic("No way to inform application about the possibly " | |
1190 | "incorrect data"); | |
1191 | ||
1192 | } else if (sense[2] & SNS2_ENV_DATA_PRESENT) { | |
1193 | ||
fc19f381 | 1194 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1195 | "Uncorrectable data check recovered secondary " |
1196 | "addr of duplex pair"); | |
1197 | ||
1198 | erp = dasd_3990_erp_action_4(erp, sense); | |
1199 | ||
1200 | } else if (sense[1] & SNS1_PERM_ERR) { | |
1201 | ||
fc19f381 | 1202 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1203 | "Uncorrectable data check with internal " |
1204 | "retry exhausted"); | |
1205 | ||
1206 | erp = dasd_3990_erp_action_1(erp); | |
1207 | ||
1208 | } else { | |
1209 | /* all other data checks */ | |
fc19f381 | 1210 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1211 | "Uncorrectable data check with retry count " |
1212 | "exhausted..."); | |
1213 | ||
1214 | erp = dasd_3990_erp_action_5(erp); | |
1215 | } | |
1216 | ||
1217 | return erp; | |
1218 | ||
1219 | } /* end dasd_3990_erp_data_check */ | |
1220 | ||
1221 | /* | |
1222 | * DASD_3990_ERP_OVERRUN | |
1223 | * | |
1224 | * DESCRIPTION | |
1225 | * Handles 24 byte 'Overrun' error. | |
1226 | * | |
1227 | * PARAMETER | |
1228 | * erp current erp_head | |
1229 | * RETURN VALUES | |
1230 | * erp new erp_head - pointer to new ERP | |
1231 | */ | |
1232 | static struct dasd_ccw_req * | |
1233 | dasd_3990_erp_overrun(struct dasd_ccw_req * erp, char *sense) | |
1234 | { | |
1235 | ||
8e09f215 | 1236 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1237 | |
1238 | erp->function = dasd_3990_erp_overrun; | |
1239 | ||
fc19f381 | 1240 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1241 | "Overrun - service overrun or overrun" |
1242 | " error requested by channel"); | |
1243 | ||
1244 | erp = dasd_3990_erp_action_5(erp); | |
1245 | ||
1246 | return erp; | |
1247 | ||
1248 | } /* end dasd_3990_erp_overrun */ | |
1249 | ||
1250 | /* | |
1251 | * DASD_3990_ERP_INV_FORMAT | |
1252 | * | |
1253 | * DESCRIPTION | |
1254 | * Handles 24 byte 'Invalid Track Format' error. | |
1255 | * | |
1256 | * PARAMETER | |
1257 | * erp current erp_head | |
1258 | * RETURN VALUES | |
1259 | * erp new erp_head - pointer to new ERP | |
1260 | */ | |
1261 | static struct dasd_ccw_req * | |
1262 | dasd_3990_erp_inv_format(struct dasd_ccw_req * erp, char *sense) | |
1263 | { | |
1264 | ||
8e09f215 | 1265 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1266 | |
1267 | erp->function = dasd_3990_erp_inv_format; | |
1268 | ||
1269 | if (sense[2] & SNS2_ENV_DATA_PRESENT) { | |
1270 | ||
fc19f381 | 1271 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1272 | "Track format error when destaging or " |
1273 | "staging data"); | |
1274 | ||
1275 | dasd_3990_handle_env_data(erp, sense); | |
1276 | ||
1277 | erp = dasd_3990_erp_action_4(erp, sense); | |
1278 | ||
1279 | } else { | |
fc19f381 SH |
1280 | /* internal error 06 - The track format is not valid*/ |
1281 | dev_err(&device->cdev->dev, | |
1282 | "An error occurred in the DASD device driver, " | |
1283 | "reason=%s\n", "06"); | |
1da177e4 LT |
1284 | |
1285 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
1286 | } | |
1287 | ||
1288 | return erp; | |
1289 | ||
1290 | } /* end dasd_3990_erp_inv_format */ | |
1291 | ||
1292 | /* | |
1293 | * DASD_3990_ERP_EOC | |
1294 | * | |
1295 | * DESCRIPTION | |
1296 | * Handles 24 byte 'End-of-Cylinder' error. | |
1297 | * | |
1298 | * PARAMETER | |
1299 | * erp already added default erp | |
1300 | * RETURN VALUES | |
1301 | * erp pointer to original (failed) cqr. | |
1302 | */ | |
1303 | static struct dasd_ccw_req * | |
1304 | dasd_3990_erp_EOC(struct dasd_ccw_req * default_erp, char *sense) | |
1305 | { | |
1306 | ||
8e09f215 | 1307 | struct dasd_device *device = default_erp->startdev; |
1da177e4 | 1308 | |
fc19f381 SH |
1309 | dev_err(&device->cdev->dev, |
1310 | "The cylinder data for accessing the DASD is inconsistent\n"); | |
1da177e4 LT |
1311 | |
1312 | /* implement action 7 - BUG */ | |
1313 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); | |
1314 | ||
1315 | } /* end dasd_3990_erp_EOC */ | |
1316 | ||
1317 | /* | |
1318 | * DASD_3990_ERP_ENV_DATA | |
1319 | * | |
1320 | * DESCRIPTION | |
1321 | * Handles 24 byte 'Environmental-Data Present' error. | |
1322 | * | |
1323 | * PARAMETER | |
1324 | * erp current erp_head | |
1325 | * RETURN VALUES | |
1326 | * erp new erp_head - pointer to new ERP | |
1327 | */ | |
1328 | static struct dasd_ccw_req * | |
1329 | dasd_3990_erp_env_data(struct dasd_ccw_req * erp, char *sense) | |
1330 | { | |
1331 | ||
8e09f215 | 1332 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1333 | |
1334 | erp->function = dasd_3990_erp_env_data; | |
1335 | ||
fc19f381 | 1336 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", "Environmental data present"); |
1da177e4 LT |
1337 | |
1338 | dasd_3990_handle_env_data(erp, sense); | |
1339 | ||
1340 | /* don't retry on disabled interface */ | |
1341 | if (sense[7] != 0x0F) { | |
1da177e4 LT |
1342 | erp = dasd_3990_erp_action_4(erp, sense); |
1343 | } else { | |
8e09f215 | 1344 | erp->status = DASD_CQR_FILLED; |
1da177e4 LT |
1345 | } |
1346 | ||
1347 | return erp; | |
1348 | ||
1349 | } /* end dasd_3990_erp_env_data */ | |
1350 | ||
1351 | /* | |
1352 | * DASD_3990_ERP_NO_REC | |
1353 | * | |
1354 | * DESCRIPTION | |
1355 | * Handles 24 byte 'No Record Found' error. | |
1356 | * | |
1357 | * PARAMETER | |
1358 | * erp already added default ERP | |
138c014d | 1359 | * |
1da177e4 LT |
1360 | * RETURN VALUES |
1361 | * erp new erp_head - pointer to new ERP | |
1362 | */ | |
1363 | static struct dasd_ccw_req * | |
1364 | dasd_3990_erp_no_rec(struct dasd_ccw_req * default_erp, char *sense) | |
1365 | { | |
1366 | ||
8e09f215 | 1367 | struct dasd_device *device = default_erp->startdev; |
1da177e4 | 1368 | |
fc19f381 SH |
1369 | dev_err(&device->cdev->dev, |
1370 | "The specified record was not found\n"); | |
1da177e4 LT |
1371 | |
1372 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); | |
1373 | ||
1374 | } /* end dasd_3990_erp_no_rec */ | |
1375 | ||
1376 | /* | |
1377 | * DASD_3990_ERP_FILE_PROT | |
1378 | * | |
1379 | * DESCRIPTION | |
1380 | * Handles 24 byte 'File Protected' error. | |
1381 | * Note: Seek related recovery is not implemented because | |
1382 | * wee don't use the seek command yet. | |
1383 | * | |
1384 | * PARAMETER | |
1385 | * erp current erp_head | |
1386 | * RETURN VALUES | |
1387 | * erp new erp_head - pointer to new ERP | |
1388 | */ | |
1389 | static struct dasd_ccw_req * | |
1390 | dasd_3990_erp_file_prot(struct dasd_ccw_req * erp) | |
1391 | { | |
1392 | ||
8e09f215 | 1393 | struct dasd_device *device = erp->startdev; |
1da177e4 | 1394 | |
fc19f381 SH |
1395 | dev_err(&device->cdev->dev, "Accessing the DASD failed because of " |
1396 | "a hardware error\n"); | |
1da177e4 LT |
1397 | |
1398 | return dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
1399 | ||
1400 | } /* end dasd_3990_erp_file_prot */ | |
1401 | ||
8e09f215 SW |
1402 | /* |
1403 | * DASD_3990_ERP_INSPECT_ALIAS | |
1404 | * | |
1405 | * DESCRIPTION | |
1406 | * Checks if the original request was started on an alias device. | |
1407 | * If yes, it modifies the original and the erp request so that | |
1408 | * the erp request can be started on a base device. | |
1409 | * | |
1410 | * PARAMETER | |
1411 | * erp pointer to the currently created default ERP | |
1412 | * | |
1413 | * RETURN VALUES | |
1414 | * erp pointer to the modified ERP, or NULL | |
1415 | */ | |
1416 | ||
1417 | static struct dasd_ccw_req *dasd_3990_erp_inspect_alias( | |
1418 | struct dasd_ccw_req *erp) | |
1419 | { | |
1420 | struct dasd_ccw_req *cqr = erp->refers; | |
1421 | ||
1422 | if (cqr->block && | |
1423 | (cqr->block->base != cqr->startdev)) { | |
1424 | if (cqr->startdev->features & DASD_FEATURE_ERPLOG) { | |
fc19f381 | 1425 | DBF_DEV_EVENT(DBF_ERR, cqr->startdev, |
8e09f215 SW |
1426 | "ERP on alias device for request %p," |
1427 | " recover on base device %s", cqr, | |
2a0217d5 | 1428 | dev_name(&cqr->block->base->cdev->dev)); |
8e09f215 SW |
1429 | } |
1430 | dasd_eckd_reset_ccw_to_base_io(cqr); | |
1431 | erp->startdev = cqr->block->base; | |
1432 | erp->function = dasd_3990_erp_inspect_alias; | |
1433 | return erp; | |
1434 | } else | |
1435 | return NULL; | |
1436 | } | |
1437 | ||
1438 | ||
1da177e4 | 1439 | /* |
138c014d | 1440 | * DASD_3990_ERP_INSPECT_24 |
1da177e4 LT |
1441 | * |
1442 | * DESCRIPTION | |
1443 | * Does a detailed inspection of the 24 byte sense data | |
138c014d | 1444 | * and sets up a related error recovery action. |
1da177e4 LT |
1445 | * |
1446 | * PARAMETER | |
1447 | * sense sense data of the actual error | |
1448 | * erp pointer to the currently created default ERP | |
1449 | * | |
1450 | * RETURN VALUES | |
1451 | * erp pointer to the (addtitional) ERP | |
1452 | */ | |
1453 | static struct dasd_ccw_req * | |
1454 | dasd_3990_erp_inspect_24(struct dasd_ccw_req * erp, char *sense) | |
1455 | { | |
1456 | ||
1457 | struct dasd_ccw_req *erp_filled = NULL; | |
1458 | ||
1459 | /* Check sense for .... */ | |
1460 | /* 'Command Reject' */ | |
1461 | if ((erp_filled == NULL) && (sense[0] & SNS0_CMD_REJECT)) { | |
1462 | erp_filled = dasd_3990_erp_com_rej(erp, sense); | |
1463 | } | |
1464 | /* 'Intervention Required' */ | |
1465 | if ((erp_filled == NULL) && (sense[0] & SNS0_INTERVENTION_REQ)) { | |
1466 | erp_filled = dasd_3990_erp_int_req(erp); | |
1467 | } | |
1468 | /* 'Bus Out Parity Check' */ | |
1469 | if ((erp_filled == NULL) && (sense[0] & SNS0_BUS_OUT_CHECK)) { | |
1470 | erp_filled = dasd_3990_erp_bus_out(erp); | |
1471 | } | |
1472 | /* 'Equipment Check' */ | |
1473 | if ((erp_filled == NULL) && (sense[0] & SNS0_EQUIPMENT_CHECK)) { | |
1474 | erp_filled = dasd_3990_erp_equip_check(erp, sense); | |
1475 | } | |
1476 | /* 'Data Check' */ | |
1477 | if ((erp_filled == NULL) && (sense[0] & SNS0_DATA_CHECK)) { | |
1478 | erp_filled = dasd_3990_erp_data_check(erp, sense); | |
1479 | } | |
1480 | /* 'Overrun' */ | |
1481 | if ((erp_filled == NULL) && (sense[0] & SNS0_OVERRUN)) { | |
1482 | erp_filled = dasd_3990_erp_overrun(erp, sense); | |
1483 | } | |
1484 | /* 'Invalid Track Format' */ | |
1485 | if ((erp_filled == NULL) && (sense[1] & SNS1_INV_TRACK_FORMAT)) { | |
1486 | erp_filled = dasd_3990_erp_inv_format(erp, sense); | |
1487 | } | |
1488 | /* 'End-of-Cylinder' */ | |
1489 | if ((erp_filled == NULL) && (sense[1] & SNS1_EOC)) { | |
1490 | erp_filled = dasd_3990_erp_EOC(erp, sense); | |
1491 | } | |
1492 | /* 'Environmental Data' */ | |
1493 | if ((erp_filled == NULL) && (sense[2] & SNS2_ENV_DATA_PRESENT)) { | |
1494 | erp_filled = dasd_3990_erp_env_data(erp, sense); | |
1495 | } | |
1496 | /* 'No Record Found' */ | |
1497 | if ((erp_filled == NULL) && (sense[1] & SNS1_NO_REC_FOUND)) { | |
1498 | erp_filled = dasd_3990_erp_no_rec(erp, sense); | |
1499 | } | |
1500 | /* 'File Protected' */ | |
1501 | if ((erp_filled == NULL) && (sense[1] & SNS1_FILE_PROTECTED)) { | |
1502 | erp_filled = dasd_3990_erp_file_prot(erp); | |
1503 | } | |
1504 | /* other (unknown) error - do default ERP */ | |
1505 | if (erp_filled == NULL) { | |
1506 | ||
1507 | erp_filled = erp; | |
1508 | } | |
1509 | ||
1510 | return erp_filled; | |
1511 | ||
1512 | } /* END dasd_3990_erp_inspect_24 */ | |
1513 | ||
1514 | /* | |
138c014d | 1515 | ***************************************************************************** |
1da177e4 | 1516 | * 32 byte sense ERP functions (only) |
138c014d | 1517 | ***************************************************************************** |
1da177e4 LT |
1518 | */ |
1519 | ||
1520 | /* | |
138c014d | 1521 | * DASD_3990_ERPACTION_10_32 |
1da177e4 LT |
1522 | * |
1523 | * DESCRIPTION | |
1524 | * Handles 32 byte 'Action 10' of Single Program Action Codes. | |
1525 | * Just retry and if retry doesn't work, return with error. | |
1526 | * | |
1527 | * PARAMETER | |
1528 | * erp current erp_head | |
138c014d | 1529 | * sense current sense data |
1da177e4 LT |
1530 | * RETURN VALUES |
1531 | * erp modified erp_head | |
1532 | */ | |
1533 | static struct dasd_ccw_req * | |
1534 | dasd_3990_erp_action_10_32(struct dasd_ccw_req * erp, char *sense) | |
1535 | { | |
1536 | ||
8e09f215 | 1537 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
1538 | |
1539 | erp->retries = 256; | |
1540 | erp->function = dasd_3990_erp_action_10_32; | |
1541 | ||
fc19f381 | 1542 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", "Perform logging requested"); |
1da177e4 LT |
1543 | |
1544 | return erp; | |
1545 | ||
1546 | } /* end dasd_3990_erp_action_10_32 */ | |
1547 | ||
1548 | /* | |
1549 | * DASD_3990_ERP_ACTION_1B_32 | |
1550 | * | |
1551 | * DESCRIPTION | |
1552 | * Handles 32 byte 'Action 1B' of Single Program Action Codes. | |
138c014d | 1553 | * A write operation could not be finished because of an unexpected |
1da177e4 | 1554 | * condition. |
138c014d HH |
1555 | * The already created 'default erp' is used to get the link to |
1556 | * the erp chain, but it can not be used for this recovery | |
1da177e4 LT |
1557 | * action because it contains no DE/LO data space. |
1558 | * | |
1559 | * PARAMETER | |
1560 | * default_erp already added default erp. | |
138c014d | 1561 | * sense current sense data |
1da177e4 LT |
1562 | * |
1563 | * RETURN VALUES | |
138c014d | 1564 | * erp new erp or |
1da177e4 LT |
1565 | * default_erp in case of imprecise ending or error |
1566 | */ | |
1567 | static struct dasd_ccw_req * | |
1568 | dasd_3990_erp_action_1B_32(struct dasd_ccw_req * default_erp, char *sense) | |
1569 | { | |
1570 | ||
8e09f215 | 1571 | struct dasd_device *device = default_erp->startdev; |
1da177e4 LT |
1572 | __u32 cpa = 0; |
1573 | struct dasd_ccw_req *cqr; | |
1574 | struct dasd_ccw_req *erp; | |
1575 | struct DE_eckd_data *DE_data; | |
8e09f215 | 1576 | struct PFX_eckd_data *PFX_data; |
1da177e4 | 1577 | char *LO_data; /* LO_eckd_data_t */ |
8e09f215 | 1578 | struct ccw1 *ccw, *oldccw; |
1da177e4 | 1579 | |
fc19f381 | 1580 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1581 | "Write not finished because of unexpected condition"); |
1582 | ||
1583 | default_erp->function = dasd_3990_erp_action_1B_32; | |
1584 | ||
1585 | /* determine the original cqr */ | |
1586 | cqr = default_erp; | |
1587 | ||
1588 | while (cqr->refers != NULL) { | |
1589 | cqr = cqr->refers; | |
1590 | } | |
1591 | ||
f3eb5384 SW |
1592 | if (scsw_is_tm(&cqr->irb.scsw)) { |
1593 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", | |
1594 | "32 bit sense, action 1B is not defined" | |
1595 | " in transport mode - just retry"); | |
1596 | return default_erp; | |
1597 | } | |
1598 | ||
1da177e4 LT |
1599 | /* for imprecise ending just do default erp */ |
1600 | if (sense[1] & 0x01) { | |
fc19f381 | 1601 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1602 | "Imprecise ending is set - just retry"); |
1603 | ||
1604 | return default_erp; | |
1605 | } | |
1606 | ||
1607 | /* determine the address of the CCW to be restarted */ | |
1608 | /* Imprecise ending is not set -> addr from IRB-SCSW */ | |
23d805b6 | 1609 | cpa = default_erp->refers->irb.scsw.cmd.cpa; |
1da177e4 LT |
1610 | |
1611 | if (cpa == 0) { | |
fc19f381 | 1612 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1613 | "Unable to determine address of the CCW " |
1614 | "to be restarted"); | |
1615 | ||
1616 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); | |
1617 | } | |
1618 | ||
1619 | /* Build new ERP request including DE/LO */ | |
1620 | erp = dasd_alloc_erp_request((char *) &cqr->magic, | |
1621 | 2 + 1,/* DE/LO + TIC */ | |
8e09f215 SW |
1622 | sizeof(struct DE_eckd_data) + |
1623 | sizeof(struct LO_eckd_data), device); | |
1da177e4 LT |
1624 | |
1625 | if (IS_ERR(erp)) { | |
fc19f381 SH |
1626 | /* internal error 01 - Unable to allocate ERP */ |
1627 | dev_err(&device->cdev->dev, "An error occurred in the DASD " | |
1628 | "device driver, reason=%s\n", "01"); | |
1da177e4 LT |
1629 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); |
1630 | } | |
1631 | ||
1632 | /* use original DE */ | |
1633 | DE_data = erp->data; | |
8e09f215 SW |
1634 | oldccw = cqr->cpaddr; |
1635 | if (oldccw->cmd_code == DASD_ECKD_CCW_PFX) { | |
1636 | PFX_data = cqr->data; | |
f3eb5384 | 1637 | memcpy(DE_data, &PFX_data->define_extent, |
8e09f215 SW |
1638 | sizeof(struct DE_eckd_data)); |
1639 | } else | |
1640 | memcpy(DE_data, cqr->data, sizeof(struct DE_eckd_data)); | |
1da177e4 LT |
1641 | |
1642 | /* create LO */ | |
8e09f215 | 1643 | LO_data = erp->data + sizeof(struct DE_eckd_data); |
1da177e4 LT |
1644 | |
1645 | if ((sense[3] == 0x01) && (LO_data[1] & 0x01)) { | |
fc19f381 | 1646 | /* should not */ |
1da177e4 LT |
1647 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); |
1648 | } | |
1649 | ||
1650 | if ((sense[7] & 0x3F) == 0x01) { | |
1651 | /* operation code is WRITE DATA -> data area orientation */ | |
1652 | LO_data[0] = 0x81; | |
1653 | ||
1654 | } else if ((sense[7] & 0x3F) == 0x03) { | |
1655 | /* operation code is FORMAT WRITE -> index orientation */ | |
1656 | LO_data[0] = 0xC3; | |
1657 | ||
1658 | } else { | |
1659 | LO_data[0] = sense[7]; /* operation */ | |
1660 | } | |
1661 | ||
1662 | LO_data[1] = sense[8]; /* auxiliary */ | |
1663 | LO_data[2] = sense[9]; | |
1664 | LO_data[3] = sense[3]; /* count */ | |
1665 | LO_data[4] = sense[29]; /* seek_addr.cyl */ | |
1666 | LO_data[5] = sense[30]; /* seek_addr.cyl 2nd byte */ | |
1667 | LO_data[7] = sense[31]; /* seek_addr.head 2nd byte */ | |
1668 | ||
1669 | memcpy(&(LO_data[8]), &(sense[11]), 8); | |
1670 | ||
1671 | /* create DE ccw */ | |
1672 | ccw = erp->cpaddr; | |
8e09f215 | 1673 | memset(ccw, 0, sizeof(struct ccw1)); |
1da177e4 LT |
1674 | ccw->cmd_code = DASD_ECKD_CCW_DEFINE_EXTENT; |
1675 | ccw->flags = CCW_FLAG_CC; | |
1676 | ccw->count = 16; | |
1677 | ccw->cda = (__u32)(addr_t) DE_data; | |
1678 | ||
1679 | /* create LO ccw */ | |
1680 | ccw++; | |
8e09f215 | 1681 | memset(ccw, 0, sizeof(struct ccw1)); |
1da177e4 LT |
1682 | ccw->cmd_code = DASD_ECKD_CCW_LOCATE_RECORD; |
1683 | ccw->flags = CCW_FLAG_CC; | |
1684 | ccw->count = 16; | |
1685 | ccw->cda = (__u32)(addr_t) LO_data; | |
1686 | ||
1687 | /* TIC to the failed ccw */ | |
1688 | ccw++; | |
1689 | ccw->cmd_code = CCW_CMD_TIC; | |
1690 | ccw->cda = cpa; | |
1691 | ||
1692 | /* fill erp related fields */ | |
1693 | erp->function = dasd_3990_erp_action_1B_32; | |
1694 | erp->refers = default_erp->refers; | |
8e09f215 SW |
1695 | erp->startdev = device; |
1696 | erp->memdev = device; | |
1da177e4 LT |
1697 | erp->magic = default_erp->magic; |
1698 | erp->expires = 0; | |
1699 | erp->retries = 256; | |
1700 | erp->buildclk = get_clock(); | |
1701 | erp->status = DASD_CQR_FILLED; | |
1702 | ||
1703 | /* remove the default erp */ | |
1704 | dasd_free_erp_request(default_erp, device); | |
1705 | ||
1706 | return erp; | |
1707 | ||
1708 | } /* end dasd_3990_erp_action_1B_32 */ | |
1709 | ||
1710 | /* | |
1711 | * DASD_3990_UPDATE_1B | |
1712 | * | |
1713 | * DESCRIPTION | |
138c014d | 1714 | * Handles the update to the 32 byte 'Action 1B' of Single Program |
1da177e4 LT |
1715 | * Action Codes in case the first action was not successful. |
1716 | * The already created 'previous_erp' is the currently not successful | |
138c014d | 1717 | * ERP. |
1da177e4 LT |
1718 | * |
1719 | * PARAMETER | |
1720 | * previous_erp already created previous erp. | |
138c014d | 1721 | * sense current sense data |
1da177e4 | 1722 | * RETURN VALUES |
138c014d | 1723 | * erp modified erp |
1da177e4 LT |
1724 | */ |
1725 | static struct dasd_ccw_req * | |
1726 | dasd_3990_update_1B(struct dasd_ccw_req * previous_erp, char *sense) | |
1727 | { | |
1728 | ||
8e09f215 | 1729 | struct dasd_device *device = previous_erp->startdev; |
1da177e4 LT |
1730 | __u32 cpa = 0; |
1731 | struct dasd_ccw_req *cqr; | |
1732 | struct dasd_ccw_req *erp; | |
1733 | char *LO_data; /* struct LO_eckd_data */ | |
1734 | struct ccw1 *ccw; | |
1735 | ||
fc19f381 | 1736 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1737 | "Write not finished because of unexpected condition" |
1738 | " - follow on"); | |
1739 | ||
1740 | /* determine the original cqr */ | |
1741 | cqr = previous_erp; | |
1742 | ||
1743 | while (cqr->refers != NULL) { | |
1744 | cqr = cqr->refers; | |
1745 | } | |
1746 | ||
f3eb5384 SW |
1747 | if (scsw_is_tm(&cqr->irb.scsw)) { |
1748 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", | |
1749 | "32 bit sense, action 1B, update," | |
1750 | " in transport mode - just retry"); | |
1751 | return previous_erp; | |
1752 | } | |
1753 | ||
1da177e4 LT |
1754 | /* for imprecise ending just do default erp */ |
1755 | if (sense[1] & 0x01) { | |
fc19f381 | 1756 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
1757 | "Imprecise ending is set - just retry"); |
1758 | ||
8e09f215 | 1759 | previous_erp->status = DASD_CQR_FILLED; |
1da177e4 LT |
1760 | |
1761 | return previous_erp; | |
1762 | } | |
1763 | ||
1764 | /* determine the address of the CCW to be restarted */ | |
1765 | /* Imprecise ending is not set -> addr from IRB-SCSW */ | |
23d805b6 | 1766 | cpa = previous_erp->irb.scsw.cmd.cpa; |
1da177e4 LT |
1767 | |
1768 | if (cpa == 0) { | |
fc19f381 SH |
1769 | /* internal error 02 - |
1770 | Unable to determine address of the CCW to be restarted */ | |
1771 | dev_err(&device->cdev->dev, "An error occurred in the DASD " | |
1772 | "device driver, reason=%s\n", "02"); | |
1da177e4 LT |
1773 | |
1774 | previous_erp->status = DASD_CQR_FAILED; | |
1775 | ||
1776 | return previous_erp; | |
1777 | } | |
1778 | ||
1779 | erp = previous_erp; | |
1780 | ||
1781 | /* update the LO with the new returned sense data */ | |
8e09f215 | 1782 | LO_data = erp->data + sizeof(struct DE_eckd_data); |
1da177e4 LT |
1783 | |
1784 | if ((sense[3] == 0x01) && (LO_data[1] & 0x01)) { | |
fc19f381 | 1785 | /* should not happen */ |
1da177e4 LT |
1786 | previous_erp->status = DASD_CQR_FAILED; |
1787 | ||
1788 | return previous_erp; | |
1789 | } | |
1790 | ||
1791 | if ((sense[7] & 0x3F) == 0x01) { | |
1792 | /* operation code is WRITE DATA -> data area orientation */ | |
1793 | LO_data[0] = 0x81; | |
1794 | ||
1795 | } else if ((sense[7] & 0x3F) == 0x03) { | |
1796 | /* operation code is FORMAT WRITE -> index orientation */ | |
1797 | LO_data[0] = 0xC3; | |
1798 | ||
1799 | } else { | |
1800 | LO_data[0] = sense[7]; /* operation */ | |
1801 | } | |
1802 | ||
1803 | LO_data[1] = sense[8]; /* auxiliary */ | |
1804 | LO_data[2] = sense[9]; | |
1805 | LO_data[3] = sense[3]; /* count */ | |
1806 | LO_data[4] = sense[29]; /* seek_addr.cyl */ | |
1807 | LO_data[5] = sense[30]; /* seek_addr.cyl 2nd byte */ | |
1808 | LO_data[7] = sense[31]; /* seek_addr.head 2nd byte */ | |
1809 | ||
1810 | memcpy(&(LO_data[8]), &(sense[11]), 8); | |
1811 | ||
1812 | /* TIC to the failed ccw */ | |
1813 | ccw = erp->cpaddr; /* addr of DE ccw */ | |
1814 | ccw++; /* addr of LE ccw */ | |
1815 | ccw++; /* addr of TIC ccw */ | |
1816 | ccw->cda = cpa; | |
1817 | ||
8e09f215 | 1818 | erp->status = DASD_CQR_FILLED; |
1da177e4 LT |
1819 | |
1820 | return erp; | |
1821 | ||
1822 | } /* end dasd_3990_update_1B */ | |
1823 | ||
1824 | /* | |
138c014d | 1825 | * DASD_3990_ERP_COMPOUND_RETRY |
1da177e4 LT |
1826 | * |
1827 | * DESCRIPTION | |
1828 | * Handles the compound ERP action retry code. | |
1829 | * NOTE: At least one retry is done even if zero is specified | |
1830 | * by the sense data. This makes enqueueing of the request | |
1831 | * easier. | |
1832 | * | |
1833 | * PARAMETER | |
1834 | * sense sense data of the actual error | |
1835 | * erp pointer to the currently created ERP | |
1836 | * | |
1837 | * RETURN VALUES | |
1838 | * erp modified ERP pointer | |
1839 | * | |
1840 | */ | |
1841 | static void | |
1842 | dasd_3990_erp_compound_retry(struct dasd_ccw_req * erp, char *sense) | |
1843 | { | |
1844 | ||
1845 | switch (sense[25] & 0x03) { | |
1846 | case 0x00: /* no not retry */ | |
1847 | erp->retries = 1; | |
1848 | break; | |
1849 | ||
1850 | case 0x01: /* retry 2 times */ | |
1851 | erp->retries = 2; | |
1852 | break; | |
1853 | ||
1854 | case 0x02: /* retry 10 times */ | |
1855 | erp->retries = 10; | |
1856 | break; | |
1857 | ||
1858 | case 0x03: /* retry 256 times */ | |
1859 | erp->retries = 256; | |
1860 | break; | |
1861 | ||
1862 | default: | |
1863 | BUG(); | |
1864 | } | |
1865 | ||
1866 | erp->function = dasd_3990_erp_compound_retry; | |
1867 | ||
1868 | } /* end dasd_3990_erp_compound_retry */ | |
1869 | ||
1870 | /* | |
138c014d | 1871 | * DASD_3990_ERP_COMPOUND_PATH |
1da177e4 LT |
1872 | * |
1873 | * DESCRIPTION | |
1874 | * Handles the compound ERP action for retry on alternate | |
1875 | * channel path. | |
1876 | * | |
1877 | * PARAMETER | |
1878 | * sense sense data of the actual error | |
1879 | * erp pointer to the currently created ERP | |
1880 | * | |
1881 | * RETURN VALUES | |
1882 | * erp modified ERP pointer | |
1883 | * | |
1884 | */ | |
1885 | static void | |
1886 | dasd_3990_erp_compound_path(struct dasd_ccw_req * erp, char *sense) | |
1887 | { | |
1888 | ||
1889 | if (sense[25] & DASD_SENSE_BIT_3) { | |
1890 | dasd_3990_erp_alternate_path(erp); | |
1891 | ||
1892 | if (erp->status == DASD_CQR_FAILED) { | |
138c014d | 1893 | /* reset the lpm and the status to be able to |
1da177e4 LT |
1894 | * try further actions. */ |
1895 | ||
1896 | erp->lpm = 0; | |
8e09f215 | 1897 | erp->status = DASD_CQR_NEED_ERP; |
1da177e4 LT |
1898 | } |
1899 | } | |
1900 | ||
1901 | erp->function = dasd_3990_erp_compound_path; | |
1902 | ||
1903 | } /* end dasd_3990_erp_compound_path */ | |
1904 | ||
1905 | /* | |
138c014d | 1906 | * DASD_3990_ERP_COMPOUND_CODE |
1da177e4 LT |
1907 | * |
1908 | * DESCRIPTION | |
1909 | * Handles the compound ERP action for retry code. | |
1910 | * | |
1911 | * PARAMETER | |
1912 | * sense sense data of the actual error | |
1913 | * erp pointer to the currently created ERP | |
1914 | * | |
1915 | * RETURN VALUES | |
1916 | * erp NEW ERP pointer | |
1917 | * | |
1918 | */ | |
1919 | static struct dasd_ccw_req * | |
1920 | dasd_3990_erp_compound_code(struct dasd_ccw_req * erp, char *sense) | |
1921 | { | |
1922 | ||
1923 | if (sense[25] & DASD_SENSE_BIT_2) { | |
1924 | ||
1925 | switch (sense[28]) { | |
1926 | case 0x17: | |
138c014d | 1927 | /* issue a Diagnostic Control command with an |
3a4fa0a2 | 1928 | * Inhibit Write subcommand and controller modifier */ |
1da177e4 LT |
1929 | erp = dasd_3990_erp_DCTL(erp, 0x20); |
1930 | break; | |
138c014d | 1931 | |
1da177e4 LT |
1932 | case 0x25: |
1933 | /* wait for 5 seconds and retry again */ | |
1934 | erp->retries = 1; | |
138c014d | 1935 | |
1da177e4 LT |
1936 | dasd_3990_erp_block_queue (erp, 5*HZ); |
1937 | break; | |
138c014d | 1938 | |
1da177e4 LT |
1939 | default: |
1940 | /* should not happen - continue */ | |
1941 | break; | |
1942 | } | |
1943 | } | |
1944 | ||
1945 | erp->function = dasd_3990_erp_compound_code; | |
1946 | ||
1947 | return erp; | |
1948 | ||
1949 | } /* end dasd_3990_erp_compound_code */ | |
1950 | ||
1951 | /* | |
138c014d | 1952 | * DASD_3990_ERP_COMPOUND_CONFIG |
1da177e4 LT |
1953 | * |
1954 | * DESCRIPTION | |
1955 | * Handles the compound ERP action for configruation | |
1956 | * dependent error. | |
1957 | * Note: duplex handling is not implemented (yet). | |
1958 | * | |
1959 | * PARAMETER | |
1960 | * sense sense data of the actual error | |
1961 | * erp pointer to the currently created ERP | |
1962 | * | |
1963 | * RETURN VALUES | |
1964 | * erp modified ERP pointer | |
1965 | * | |
1966 | */ | |
1967 | static void | |
1968 | dasd_3990_erp_compound_config(struct dasd_ccw_req * erp, char *sense) | |
1969 | { | |
1970 | ||
1971 | if ((sense[25] & DASD_SENSE_BIT_1) && (sense[26] & DASD_SENSE_BIT_2)) { | |
1972 | ||
fc19f381 SH |
1973 | /* set to suspended duplex state then restart |
1974 | internal error 05 - Set device to suspended duplex state | |
1975 | should be done */ | |
8e09f215 | 1976 | struct dasd_device *device = erp->startdev; |
fc19f381 SH |
1977 | dev_err(&device->cdev->dev, |
1978 | "An error occurred in the DASD device driver, " | |
1979 | "reason=%s\n", "05"); | |
1da177e4 LT |
1980 | |
1981 | } | |
1982 | ||
1983 | erp->function = dasd_3990_erp_compound_config; | |
1984 | ||
1985 | } /* end dasd_3990_erp_compound_config */ | |
1986 | ||
1987 | /* | |
138c014d | 1988 | * DASD_3990_ERP_COMPOUND |
1da177e4 LT |
1989 | * |
1990 | * DESCRIPTION | |
138c014d | 1991 | * Does the further compound program action if |
1da177e4 LT |
1992 | * compound retry was not successful. |
1993 | * | |
1994 | * PARAMETER | |
1995 | * sense sense data of the actual error | |
1996 | * erp pointer to the current (failed) ERP | |
1997 | * | |
1998 | * RETURN VALUES | |
1999 | * erp (additional) ERP pointer | |
2000 | * | |
2001 | */ | |
2002 | static struct dasd_ccw_req * | |
2003 | dasd_3990_erp_compound(struct dasd_ccw_req * erp, char *sense) | |
2004 | { | |
2005 | ||
2006 | if ((erp->function == dasd_3990_erp_compound_retry) && | |
8e09f215 | 2007 | (erp->status == DASD_CQR_NEED_ERP)) { |
1da177e4 LT |
2008 | |
2009 | dasd_3990_erp_compound_path(erp, sense); | |
2010 | } | |
2011 | ||
2012 | if ((erp->function == dasd_3990_erp_compound_path) && | |
8e09f215 | 2013 | (erp->status == DASD_CQR_NEED_ERP)) { |
1da177e4 LT |
2014 | |
2015 | erp = dasd_3990_erp_compound_code(erp, sense); | |
2016 | } | |
2017 | ||
2018 | if ((erp->function == dasd_3990_erp_compound_code) && | |
8e09f215 | 2019 | (erp->status == DASD_CQR_NEED_ERP)) { |
1da177e4 LT |
2020 | |
2021 | dasd_3990_erp_compound_config(erp, sense); | |
2022 | } | |
2023 | ||
2024 | /* if no compound action ERP specified, the request failed */ | |
8e09f215 | 2025 | if (erp->status == DASD_CQR_NEED_ERP) |
1da177e4 | 2026 | erp->status = DASD_CQR_FAILED; |
1da177e4 LT |
2027 | |
2028 | return erp; | |
2029 | ||
2030 | } /* end dasd_3990_erp_compound */ | |
2031 | ||
f60c768c SH |
2032 | /* |
2033 | *DASD_3990_ERP_HANDLE_SIM | |
2034 | * | |
2035 | *DESCRIPTION | |
2036 | * inspects the SIM SENSE data and starts an appropriate action | |
2037 | * | |
2038 | * PARAMETER | |
2039 | * sense sense data of the actual error | |
2040 | * | |
2041 | * RETURN VALUES | |
2042 | * none | |
2043 | */ | |
2044 | void | |
2045 | dasd_3990_erp_handle_sim(struct dasd_device *device, char *sense) | |
2046 | { | |
2047 | /* print message according to log or message to operator mode */ | |
2048 | if ((sense[24] & DASD_SIM_MSG_TO_OP) || (sense[1] & 0x10)) { | |
f60c768c | 2049 | /* print SIM SRC from RefCode */ |
fc19f381 SH |
2050 | dev_err(&device->cdev->dev, "SIM - SRC: " |
2051 | "%02x%02x%02x%02x\n", sense[22], | |
f60c768c SH |
2052 | sense[23], sense[11], sense[12]); |
2053 | } else if (sense[24] & DASD_SIM_LOG) { | |
2054 | /* print SIM SRC Refcode */ | |
fc19f381 SH |
2055 | dev_warn(&device->cdev->dev, "log SIM - SRC: " |
2056 | "%02x%02x%02x%02x\n", sense[22], | |
f60c768c SH |
2057 | sense[23], sense[11], sense[12]); |
2058 | } | |
2059 | } | |
2060 | ||
1da177e4 | 2061 | /* |
138c014d | 2062 | * DASD_3990_ERP_INSPECT_32 |
1da177e4 LT |
2063 | * |
2064 | * DESCRIPTION | |
2065 | * Does a detailed inspection of the 32 byte sense data | |
138c014d | 2066 | * and sets up a related error recovery action. |
1da177e4 LT |
2067 | * |
2068 | * PARAMETER | |
2069 | * sense sense data of the actual error | |
2070 | * erp pointer to the currently created default ERP | |
2071 | * | |
2072 | * RETURN VALUES | |
2073 | * erp_filled pointer to the ERP | |
2074 | * | |
2075 | */ | |
2076 | static struct dasd_ccw_req * | |
2077 | dasd_3990_erp_inspect_32(struct dasd_ccw_req * erp, char *sense) | |
2078 | { | |
2079 | ||
8e09f215 | 2080 | struct dasd_device *device = erp->startdev; |
1da177e4 LT |
2081 | |
2082 | erp->function = dasd_3990_erp_inspect_32; | |
2083 | ||
f60c768c SH |
2084 | /* check for SIM sense data */ |
2085 | if ((sense[6] & DASD_SIM_SENSE) == DASD_SIM_SENSE) | |
2086 | dasd_3990_erp_handle_sim(device, sense); | |
2087 | ||
1da177e4 LT |
2088 | if (sense[25] & DASD_SENSE_BIT_0) { |
2089 | ||
2090 | /* compound program action codes (byte25 bit 0 == '1') */ | |
2091 | dasd_3990_erp_compound_retry(erp, sense); | |
2092 | ||
2093 | } else { | |
2094 | ||
2095 | /* single program action codes (byte25 bit 0 == '0') */ | |
2096 | switch (sense[25]) { | |
2097 | ||
2098 | case 0x00: /* success - use default ERP for retries */ | |
fc19f381 | 2099 | DBF_DEV_EVENT(DBF_DEBUG, device, "%s", |
1da177e4 LT |
2100 | "ERP called for successful request" |
2101 | " - just retry"); | |
2102 | break; | |
2103 | ||
2104 | case 0x01: /* fatal error */ | |
fc19f381 SH |
2105 | dev_err(&device->cdev->dev, |
2106 | "ERP failed for the DASD\n"); | |
1da177e4 LT |
2107 | |
2108 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
2109 | break; | |
2110 | ||
2111 | case 0x02: /* intervention required */ | |
2112 | case 0x03: /* intervention required during dual copy */ | |
2113 | erp = dasd_3990_erp_int_req(erp); | |
2114 | break; | |
2115 | ||
fc19f381 SH |
2116 | case 0x0F: /* length mismatch during update write command |
2117 | internal error 08 - update write command error*/ | |
2118 | dev_err(&device->cdev->dev, "An error occurred in the " | |
2119 | "DASD device driver, reason=%s\n", "08"); | |
1da177e4 LT |
2120 | |
2121 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
2122 | break; | |
2123 | ||
2124 | case 0x10: /* logging required for other channel program */ | |
2125 | erp = dasd_3990_erp_action_10_32(erp, sense); | |
2126 | break; | |
2127 | ||
fc19f381 SH |
2128 | case 0x15: /* next track outside defined extend |
2129 | internal error 07 - The next track is not | |
2130 | within the defined storage extent */ | |
2131 | dev_err(&device->cdev->dev, | |
2132 | "An error occurred in the DASD device driver, " | |
2133 | "reason=%s\n", "07"); | |
1da177e4 LT |
2134 | |
2135 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); | |
2136 | break; | |
2137 | ||
2138 | case 0x1B: /* unexpected condition during write */ | |
2139 | ||
2140 | erp = dasd_3990_erp_action_1B_32(erp, sense); | |
2141 | break; | |
2142 | ||
2143 | case 0x1C: /* invalid data */ | |
fc19f381 | 2144 | dev_emerg(&device->cdev->dev, |
1da177e4 | 2145 | "Data recovered during retry with PCI " |
fc19f381 | 2146 | "fetch mode active\n"); |
1da177e4 LT |
2147 | |
2148 | /* not possible to handle this situation in Linux */ | |
2149 | panic | |
2150 | ("Invalid data - No way to inform application " | |
2151 | "about the possibly incorrect data"); | |
2152 | break; | |
2153 | ||
2154 | case 0x1D: /* state-change pending */ | |
fc19f381 | 2155 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
2156 | "A State change pending condition exists " |
2157 | "for the subsystem or device"); | |
2158 | ||
2159 | erp = dasd_3990_erp_action_4(erp, sense); | |
2160 | break; | |
2161 | ||
2162 | case 0x1E: /* busy */ | |
fc19f381 | 2163 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
1da177e4 LT |
2164 | "Busy condition exists " |
2165 | "for the subsystem or device"); | |
2166 | erp = dasd_3990_erp_action_4(erp, sense); | |
2167 | break; | |
2168 | ||
2169 | default: /* all others errors - default erp */ | |
2170 | break; | |
2171 | } | |
2172 | } | |
2173 | ||
2174 | return erp; | |
2175 | ||
2176 | } /* end dasd_3990_erp_inspect_32 */ | |
2177 | ||
2178 | /* | |
138c014d | 2179 | ***************************************************************************** |
1da177e4 | 2180 | * main ERP control fuctions (24 and 32 byte sense) |
138c014d | 2181 | ***************************************************************************** |
1da177e4 LT |
2182 | */ |
2183 | ||
6c5f57c7 SH |
2184 | /* |
2185 | * DASD_3990_ERP_CONTROL_CHECK | |
2186 | * | |
2187 | * DESCRIPTION | |
2188 | * Does a generic inspection if a control check occured and sets up | |
2189 | * the related error recovery procedure | |
2190 | * | |
2191 | * PARAMETER | |
2192 | * erp pointer to the currently created default ERP | |
2193 | * | |
2194 | * RETURN VALUES | |
2195 | * erp_filled pointer to the erp | |
2196 | */ | |
2197 | ||
2198 | static struct dasd_ccw_req * | |
2199 | dasd_3990_erp_control_check(struct dasd_ccw_req *erp) | |
2200 | { | |
2201 | struct dasd_device *device = erp->startdev; | |
2202 | ||
f3eb5384 | 2203 | if (scsw_cstat(&erp->refers->irb.scsw) & (SCHN_STAT_INTF_CTRL_CHK |
6c5f57c7 | 2204 | | SCHN_STAT_CHN_CTRL_CHK)) { |
fc19f381 | 2205 | DBF_DEV_EVENT(DBF_WARNING, device, "%s", |
6c5f57c7 SH |
2206 | "channel or interface control check"); |
2207 | erp = dasd_3990_erp_action_4(erp, NULL); | |
2208 | } | |
2209 | return erp; | |
2210 | } | |
2211 | ||
1da177e4 LT |
2212 | /* |
2213 | * DASD_3990_ERP_INSPECT | |
2214 | * | |
2215 | * DESCRIPTION | |
2216 | * Does a detailed inspection for sense data by calling either | |
2217 | * the 24-byte or the 32-byte inspection routine. | |
2218 | * | |
2219 | * PARAMETER | |
2220 | * erp pointer to the currently created default ERP | |
2221 | * RETURN VALUES | |
138c014d | 2222 | * erp_new contens was possibly modified |
1da177e4 LT |
2223 | */ |
2224 | static struct dasd_ccw_req * | |
f3eb5384 | 2225 | dasd_3990_erp_inspect(struct dasd_ccw_req *erp) |
1da177e4 LT |
2226 | { |
2227 | ||
2228 | struct dasd_ccw_req *erp_new = NULL; | |
f3eb5384 | 2229 | char *sense; |
1da177e4 | 2230 | |
8e09f215 SW |
2231 | /* if this problem occured on an alias retry on base */ |
2232 | erp_new = dasd_3990_erp_inspect_alias(erp); | |
2233 | if (erp_new) | |
2234 | return erp_new; | |
2235 | ||
f3eb5384 SW |
2236 | /* sense data are located in the refers record of the |
2237 | * already set up new ERP ! | |
2238 | * check if concurrent sens is available | |
2239 | */ | |
2240 | sense = dasd_get_sense(&erp->refers->irb); | |
2241 | if (!sense) | |
6c5f57c7 | 2242 | erp_new = dasd_3990_erp_control_check(erp); |
1da177e4 | 2243 | /* distinguish between 24 and 32 byte sense data */ |
6c5f57c7 | 2244 | else if (sense[27] & DASD_SENSE_BIT_0) { |
1da177e4 LT |
2245 | |
2246 | /* inspect the 24 byte sense data */ | |
2247 | erp_new = dasd_3990_erp_inspect_24(erp, sense); | |
2248 | ||
2249 | } else { | |
2250 | ||
2251 | /* inspect the 32 byte sense data */ | |
2252 | erp_new = dasd_3990_erp_inspect_32(erp, sense); | |
2253 | ||
2254 | } /* end distinguish between 24 and 32 byte sense data */ | |
2255 | ||
2256 | return erp_new; | |
2257 | } | |
2258 | ||
2259 | /* | |
2260 | * DASD_3990_ERP_ADD_ERP | |
138c014d | 2261 | * |
1da177e4 LT |
2262 | * DESCRIPTION |
2263 | * This funtion adds an additional request block (ERP) to the head of | |
2264 | * the given cqr (or erp). | |
f3eb5384 SW |
2265 | * For a command mode cqr the erp is initialized as an default erp |
2266 | * (retry TIC). | |
2267 | * For transport mode we make a copy of the original TCW (points to | |
2268 | * the original TCCB, TIDALs, etc.) but give it a fresh | |
2269 | * TSB so the original sense data will not be changed. | |
1da177e4 LT |
2270 | * |
2271 | * PARAMETER | |
138c014d | 2272 | * cqr head of the current ERP-chain (or single cqr if |
1da177e4 LT |
2273 | * first error) |
2274 | * RETURN VALUES | |
2275 | * erp pointer to new ERP-chain head | |
2276 | */ | |
f3eb5384 | 2277 | static struct dasd_ccw_req *dasd_3990_erp_add_erp(struct dasd_ccw_req *cqr) |
1da177e4 LT |
2278 | { |
2279 | ||
8e09f215 | 2280 | struct dasd_device *device = cqr->startdev; |
1da177e4 | 2281 | struct ccw1 *ccw; |
1da177e4 | 2282 | struct dasd_ccw_req *erp; |
f3eb5384 SW |
2283 | int cplength, datasize; |
2284 | struct tcw *tcw; | |
2285 | struct tsb *tsb; | |
2286 | ||
2287 | if (cqr->cpmode == 1) { | |
2288 | cplength = 0; | |
4a31ba57 SW |
2289 | /* TCW needs to be 64 byte aligned, so leave enough room */ |
2290 | datasize = 64 + sizeof(struct tcw) + sizeof(struct tsb); | |
f3eb5384 SW |
2291 | } else { |
2292 | cplength = 2; | |
2293 | datasize = 0; | |
2294 | } | |
1da177e4 | 2295 | |
f3eb5384 SW |
2296 | /* allocate additional request block */ |
2297 | erp = dasd_alloc_erp_request((char *) &cqr->magic, | |
2298 | cplength, datasize, device); | |
1da177e4 LT |
2299 | if (IS_ERR(erp)) { |
2300 | if (cqr->retries <= 0) { | |
fc19f381 | 2301 | DBF_DEV_EVENT(DBF_ERR, device, "%s", |
1da177e4 LT |
2302 | "Unable to allocate ERP request"); |
2303 | cqr->status = DASD_CQR_FAILED; | |
2304 | cqr->stopclk = get_clock (); | |
2305 | } else { | |
fc19f381 | 2306 | DBF_DEV_EVENT(DBF_ERR, device, |
1da177e4 LT |
2307 | "Unable to allocate ERP request " |
2308 | "(%i retries left)", | |
2309 | cqr->retries); | |
8e09f215 | 2310 | dasd_block_set_timer(device->block, (HZ << 3)); |
1da177e4 LT |
2311 | } |
2312 | return cqr; | |
2313 | } | |
2314 | ||
eb6e199b | 2315 | ccw = cqr->cpaddr; |
f3eb5384 SW |
2316 | if (cqr->cpmode == 1) { |
2317 | /* make a shallow copy of the original tcw but set new tsb */ | |
2318 | erp->cpmode = 1; | |
4a31ba57 SW |
2319 | erp->cpaddr = PTR_ALIGN(erp->data, 64); |
2320 | tcw = erp->cpaddr; | |
f3eb5384 SW |
2321 | tsb = (struct tsb *) &tcw[1]; |
2322 | *tcw = *((struct tcw *)cqr->cpaddr); | |
2323 | tcw->tsb = (long)tsb; | |
eb6e199b SW |
2324 | } else if (ccw->cmd_code == DASD_ECKD_CCW_PSF) { |
2325 | /* PSF cannot be chained from NOOP/TIC */ | |
2326 | erp->cpaddr = cqr->cpaddr; | |
f3eb5384 SW |
2327 | } else { |
2328 | /* initialize request with default TIC to current ERP/CQR */ | |
2329 | ccw = erp->cpaddr; | |
2330 | ccw->cmd_code = CCW_CMD_NOOP; | |
2331 | ccw->flags = CCW_FLAG_CC; | |
2332 | ccw++; | |
2333 | ccw->cmd_code = CCW_CMD_TIC; | |
2334 | ccw->cda = (long)(cqr->cpaddr); | |
2335 | } | |
2336 | ||
1da177e4 LT |
2337 | erp->function = dasd_3990_erp_add_erp; |
2338 | erp->refers = cqr; | |
8e09f215 SW |
2339 | erp->startdev = device; |
2340 | erp->memdev = device; | |
2341 | erp->block = cqr->block; | |
1da177e4 LT |
2342 | erp->magic = cqr->magic; |
2343 | erp->expires = 0; | |
2344 | erp->retries = 256; | |
2345 | erp->buildclk = get_clock(); | |
1da177e4 LT |
2346 | erp->status = DASD_CQR_FILLED; |
2347 | ||
2348 | return erp; | |
2349 | } | |
2350 | ||
2351 | /* | |
138c014d HH |
2352 | * DASD_3990_ERP_ADDITIONAL_ERP |
2353 | * | |
1da177e4 LT |
2354 | * DESCRIPTION |
2355 | * An additional ERP is needed to handle the current error. | |
2356 | * Add ERP to the head of the ERP-chain containing the ERP processing | |
2357 | * determined based on the sense data. | |
2358 | * | |
2359 | * PARAMETER | |
138c014d | 2360 | * cqr head of the current ERP-chain (or single cqr if |
1da177e4 LT |
2361 | * first error) |
2362 | * | |
2363 | * RETURN VALUES | |
2364 | * erp pointer to new ERP-chain head | |
2365 | */ | |
2366 | static struct dasd_ccw_req * | |
2367 | dasd_3990_erp_additional_erp(struct dasd_ccw_req * cqr) | |
2368 | { | |
2369 | ||
2370 | struct dasd_ccw_req *erp = NULL; | |
2371 | ||
2372 | /* add erp and initialize with default TIC */ | |
2373 | erp = dasd_3990_erp_add_erp(cqr); | |
2374 | ||
2375 | /* inspect sense, determine specific ERP if possible */ | |
2376 | if (erp != cqr) { | |
2377 | ||
2378 | erp = dasd_3990_erp_inspect(erp); | |
2379 | } | |
2380 | ||
2381 | return erp; | |
2382 | ||
2383 | } /* end dasd_3990_erp_additional_erp */ | |
2384 | ||
2385 | /* | |
2386 | * DASD_3990_ERP_ERROR_MATCH | |
2387 | * | |
2388 | * DESCRIPTION | |
2389 | * Check if the device status of the given cqr is the same. | |
2390 | * This means that the failed CCW and the relevant sense data | |
2391 | * must match. | |
2392 | * I don't distinguish between 24 and 32 byte sense because in case of | |
2393 | * 24 byte sense byte 25 and 27 is set as well. | |
2394 | * | |
2395 | * PARAMETER | |
138c014d | 2396 | * cqr1 first cqr, which will be compared with the |
1da177e4 LT |
2397 | * cqr2 second cqr. |
2398 | * | |
2399 | * RETURN VALUES | |
2400 | * match 'boolean' for match found | |
2401 | * returns 1 if match found, otherwise 0. | |
2402 | */ | |
f3eb5384 SW |
2403 | static int dasd_3990_erp_error_match(struct dasd_ccw_req *cqr1, |
2404 | struct dasd_ccw_req *cqr2) | |
1da177e4 | 2405 | { |
f3eb5384 | 2406 | char *sense1, *sense2; |
1da177e4 | 2407 | |
5c12f240 SW |
2408 | if (cqr1->startdev != cqr2->startdev) |
2409 | return 0; | |
1da177e4 | 2410 | |
f3eb5384 SW |
2411 | sense1 = dasd_get_sense(&cqr1->irb); |
2412 | sense2 = dasd_get_sense(&cqr2->irb); | |
6c5f57c7 | 2413 | |
f3eb5384 SW |
2414 | /* one request has sense data, the other not -> no match, return 0 */ |
2415 | if (!sense1 != !sense2) | |
2416 | return 0; | |
2417 | /* no sense data in both cases -> check cstat for IFCC */ | |
2418 | if (!sense1 && !sense2) { | |
2419 | if ((scsw_cstat(&cqr1->irb.scsw) & (SCHN_STAT_INTF_CTRL_CHK | | |
2420 | SCHN_STAT_CHN_CTRL_CHK)) == | |
2421 | (scsw_cstat(&cqr2->irb.scsw) & (SCHN_STAT_INTF_CTRL_CHK | | |
2422 | SCHN_STAT_CHN_CTRL_CHK))) | |
6c5f57c7 SH |
2423 | return 1; /* match with ifcc*/ |
2424 | } | |
1da177e4 | 2425 | /* check sense data; byte 0-2,25,27 */ |
f3eb5384 SW |
2426 | if (!(sense1 && sense2 && |
2427 | (memcmp(sense1, sense2, 3) == 0) && | |
2428 | (sense1[27] == sense2[27]) && | |
2429 | (sense1[25] == sense2[25]))) { | |
1da177e4 LT |
2430 | |
2431 | return 0; /* sense doesn't match */ | |
2432 | } | |
2433 | ||
2434 | return 1; /* match */ | |
2435 | ||
2436 | } /* end dasd_3990_erp_error_match */ | |
2437 | ||
2438 | /* | |
2439 | * DASD_3990_ERP_IN_ERP | |
2440 | * | |
2441 | * DESCRIPTION | |
2442 | * check if the current error already happened before. | |
2443 | * quick exit if current cqr is not an ERP (cqr->refers=NULL) | |
2444 | * | |
2445 | * PARAMETER | |
2446 | * cqr failed cqr (either original cqr or already an erp) | |
2447 | * | |
2448 | * RETURN VALUES | |
138c014d | 2449 | * erp erp-pointer to the already defined error |
1da177e4 LT |
2450 | * recovery procedure OR |
2451 | * NULL if a 'new' error occurred. | |
2452 | */ | |
2453 | static struct dasd_ccw_req * | |
2454 | dasd_3990_erp_in_erp(struct dasd_ccw_req *cqr) | |
2455 | { | |
2456 | ||
2457 | struct dasd_ccw_req *erp_head = cqr, /* save erp chain head */ | |
2458 | *erp_match = NULL; /* save erp chain head */ | |
2459 | int match = 0; /* 'boolean' for matching error found */ | |
2460 | ||
2461 | if (cqr->refers == NULL) { /* return if not in erp */ | |
2462 | return NULL; | |
2463 | } | |
2464 | ||
2465 | /* check the erp/cqr chain for current error */ | |
2466 | do { | |
2467 | match = dasd_3990_erp_error_match(erp_head, cqr->refers); | |
2468 | erp_match = cqr; /* save possible matching erp */ | |
2469 | cqr = cqr->refers; /* check next erp/cqr in queue */ | |
2470 | ||
2471 | } while ((cqr->refers != NULL) && (!match)); | |
2472 | ||
2473 | if (!match) { | |
2474 | return NULL; /* no match was found */ | |
2475 | } | |
2476 | ||
2477 | return erp_match; /* return address of matching erp */ | |
2478 | ||
2479 | } /* END dasd_3990_erp_in_erp */ | |
2480 | ||
2481 | /* | |
2482 | * DASD_3990_ERP_FURTHER_ERP (24 & 32 byte sense) | |
2483 | * | |
2484 | * DESCRIPTION | |
138c014d | 2485 | * No retry is left for the current ERP. Check what has to be done |
1da177e4 LT |
2486 | * with the ERP. |
2487 | * - do further defined ERP action or | |
138c014d | 2488 | * - wait for interrupt or |
1da177e4 LT |
2489 | * - exit with permanent error |
2490 | * | |
2491 | * PARAMETER | |
2492 | * erp ERP which is in progress with no retry left | |
2493 | * | |
2494 | * RETURN VALUES | |
2495 | * erp modified/additional ERP | |
2496 | */ | |
2497 | static struct dasd_ccw_req * | |
2498 | dasd_3990_erp_further_erp(struct dasd_ccw_req *erp) | |
2499 | { | |
2500 | ||
8e09f215 | 2501 | struct dasd_device *device = erp->startdev; |
f3eb5384 | 2502 | char *sense = dasd_get_sense(&erp->irb); |
1da177e4 LT |
2503 | |
2504 | /* check for 24 byte sense ERP */ | |
2505 | if ((erp->function == dasd_3990_erp_bus_out) || | |
2506 | (erp->function == dasd_3990_erp_action_1) || | |
2507 | (erp->function == dasd_3990_erp_action_4)) { | |
2508 | ||
2509 | erp = dasd_3990_erp_action_1(erp); | |
2510 | ||
eb6e199b SW |
2511 | } else if (erp->function == dasd_3990_erp_action_1_sec) { |
2512 | erp = dasd_3990_erp_action_1_sec(erp); | |
1da177e4 LT |
2513 | } else if (erp->function == dasd_3990_erp_action_5) { |
2514 | ||
2515 | /* retries have not been successful */ | |
2516 | /* prepare erp for retry on different channel path */ | |
2517 | erp = dasd_3990_erp_action_1(erp); | |
2518 | ||
f3eb5384 | 2519 | if (sense && !(sense[2] & DASD_SENSE_BIT_0)) { |
1da177e4 | 2520 | |
138c014d | 2521 | /* issue a Diagnostic Control command with an |
1da177e4 LT |
2522 | * Inhibit Write subcommand */ |
2523 | ||
2524 | switch (sense[25]) { | |
2525 | case 0x17: | |
2526 | case 0x57:{ /* controller */ | |
2527 | erp = dasd_3990_erp_DCTL(erp, 0x20); | |
2528 | break; | |
2529 | } | |
2530 | case 0x18: | |
2531 | case 0x58:{ /* channel path */ | |
2532 | erp = dasd_3990_erp_DCTL(erp, 0x40); | |
2533 | break; | |
2534 | } | |
2535 | case 0x19: | |
2536 | case 0x59:{ /* storage director */ | |
2537 | erp = dasd_3990_erp_DCTL(erp, 0x80); | |
2538 | break; | |
2539 | } | |
2540 | default: | |
fc19f381 | 2541 | DBF_DEV_EVENT(DBF_WARNING, device, |
1da177e4 LT |
2542 | "invalid subcommand modifier 0x%x " |
2543 | "for Diagnostic Control Command", | |
2544 | sense[25]); | |
2545 | } | |
2546 | } | |
2547 | ||
2548 | /* check for 32 byte sense ERP */ | |
f3eb5384 SW |
2549 | } else if (sense && |
2550 | ((erp->function == dasd_3990_erp_compound_retry) || | |
2551 | (erp->function == dasd_3990_erp_compound_path) || | |
2552 | (erp->function == dasd_3990_erp_compound_code) || | |
2553 | (erp->function == dasd_3990_erp_compound_config))) { | |
1da177e4 LT |
2554 | |
2555 | erp = dasd_3990_erp_compound(erp, sense); | |
2556 | ||
2557 | } else { | |
fc19f381 SH |
2558 | /* |
2559 | * No retry left and no additional special handling | |
2560 | * necessary | |
2561 | */ | |
2562 | dev_err(&device->cdev->dev, | |
2563 | "ERP %p has run out of retries and failed\n", erp); | |
1da177e4 LT |
2564 | |
2565 | erp->status = DASD_CQR_FAILED; | |
2566 | } | |
2567 | ||
2568 | return erp; | |
2569 | ||
2570 | } /* end dasd_3990_erp_further_erp */ | |
2571 | ||
2572 | /* | |
138c014d | 2573 | * DASD_3990_ERP_HANDLE_MATCH_ERP |
1da177e4 LT |
2574 | * |
2575 | * DESCRIPTION | |
2576 | * An error occurred again and an ERP has been detected which is already | |
138c014d | 2577 | * used to handle this error (e.g. retries). |
1da177e4 LT |
2578 | * All prior ERP's are asumed to be successful and therefore removed |
2579 | * from queue. | |
138c014d | 2580 | * If retry counter of matching erp is already 0, it is checked if further |
1da177e4 LT |
2581 | * action is needed (besides retry) or if the ERP has failed. |
2582 | * | |
2583 | * PARAMETER | |
2584 | * erp_head first ERP in ERP-chain | |
2585 | * erp ERP that handles the actual error. | |
2586 | * (matching erp) | |
2587 | * | |
2588 | * RETURN VALUES | |
2589 | * erp modified/additional ERP | |
2590 | */ | |
2591 | static struct dasd_ccw_req * | |
2592 | dasd_3990_erp_handle_match_erp(struct dasd_ccw_req *erp_head, | |
2593 | struct dasd_ccw_req *erp) | |
2594 | { | |
2595 | ||
8e09f215 | 2596 | struct dasd_device *device = erp_head->startdev; |
1da177e4 LT |
2597 | struct dasd_ccw_req *erp_done = erp_head; /* finished req */ |
2598 | struct dasd_ccw_req *erp_free = NULL; /* req to be freed */ | |
2599 | ||
2600 | /* loop over successful ERPs and remove them from chanq */ | |
2601 | while (erp_done != erp) { | |
2602 | ||
2603 | if (erp_done == NULL) /* end of chain reached */ | |
2604 | panic(PRINTK_HEADER "Programming error in ERP! The " | |
2605 | "original request was lost\n"); | |
2606 | ||
2607 | /* remove the request from the device queue */ | |
8e09f215 | 2608 | list_del(&erp_done->blocklist); |
1da177e4 LT |
2609 | |
2610 | erp_free = erp_done; | |
2611 | erp_done = erp_done->refers; | |
2612 | ||
2613 | /* free the finished erp request */ | |
8e09f215 | 2614 | dasd_free_erp_request(erp_free, erp_free->memdev); |
1da177e4 LT |
2615 | |
2616 | } /* end while */ | |
2617 | ||
2618 | if (erp->retries > 0) { | |
2619 | ||
f3eb5384 | 2620 | char *sense = dasd_get_sense(&erp->refers->irb); |
1da177e4 LT |
2621 | |
2622 | /* check for special retries */ | |
f3eb5384 | 2623 | if (sense && erp->function == dasd_3990_erp_action_4) { |
1da177e4 LT |
2624 | |
2625 | erp = dasd_3990_erp_action_4(erp, sense); | |
2626 | ||
f3eb5384 SW |
2627 | } else if (sense && |
2628 | erp->function == dasd_3990_erp_action_1B_32) { | |
1da177e4 LT |
2629 | |
2630 | erp = dasd_3990_update_1B(erp, sense); | |
2631 | ||
f3eb5384 | 2632 | } else if (sense && erp->function == dasd_3990_erp_int_req) { |
1da177e4 LT |
2633 | |
2634 | erp = dasd_3990_erp_int_req(erp); | |
2635 | ||
2636 | } else { | |
2637 | /* simple retry */ | |
fc19f381 | 2638 | DBF_DEV_EVENT(DBF_DEBUG, device, |
1da177e4 LT |
2639 | "%i retries left for erp %p", |
2640 | erp->retries, erp); | |
2641 | ||
2642 | /* handle the request again... */ | |
8e09f215 | 2643 | erp->status = DASD_CQR_FILLED; |
1da177e4 LT |
2644 | } |
2645 | ||
2646 | } else { | |
2647 | /* no retry left - check for further necessary action */ | |
2648 | /* if no further actions, handle rest as permanent error */ | |
2649 | erp = dasd_3990_erp_further_erp(erp); | |
2650 | } | |
2651 | ||
2652 | return erp; | |
2653 | ||
2654 | } /* end dasd_3990_erp_handle_match_erp */ | |
2655 | ||
2656 | /* | |
2657 | * DASD_3990_ERP_ACTION | |
2658 | * | |
2659 | * DESCRIPTION | |
5d67d164 | 2660 | * control routine for 3990 erp actions. |
1da177e4 LT |
2661 | * Has to be called with the queue lock (namely the s390_irq_lock) acquired. |
2662 | * | |
2663 | * PARAMETER | |
2664 | * cqr failed cqr (either original cqr or already an erp) | |
2665 | * | |
2666 | * RETURN VALUES | |
2667 | * erp erp-pointer to the head of the ERP action chain. | |
2668 | * This means: | |
2669 | * - either a ptr to an additional ERP cqr or | |
138c014d | 2670 | * - the original given cqr (which's status might |
1da177e4 LT |
2671 | * be modified) |
2672 | */ | |
2673 | struct dasd_ccw_req * | |
2674 | dasd_3990_erp_action(struct dasd_ccw_req * cqr) | |
2675 | { | |
1da177e4 | 2676 | struct dasd_ccw_req *erp = NULL; |
8e09f215 | 2677 | struct dasd_device *device = cqr->startdev; |
9575bf26 | 2678 | struct dasd_ccw_req *temp_erp = NULL; |
1da177e4 | 2679 | |
9575bf26 HH |
2680 | if (device->features & DASD_FEATURE_ERPLOG) { |
2681 | /* print current erp_chain */ | |
fc19f381 SH |
2682 | dev_err(&device->cdev->dev, |
2683 | "ERP chain at BEGINNING of ERP-ACTION\n"); | |
1da177e4 LT |
2684 | for (temp_erp = cqr; |
2685 | temp_erp != NULL; temp_erp = temp_erp->refers) { | |
2686 | ||
fc19f381 SH |
2687 | dev_err(&device->cdev->dev, |
2688 | "ERP %p (%02x) refers to %p\n", | |
1da177e4 LT |
2689 | temp_erp, temp_erp->status, |
2690 | temp_erp->refers); | |
2691 | } | |
2692 | } | |
1da177e4 | 2693 | |
73ac36ea | 2694 | /* double-check if current erp/cqr was successful */ |
f3eb5384 SW |
2695 | if ((scsw_cstat(&cqr->irb.scsw) == 0x00) && |
2696 | (scsw_dstat(&cqr->irb.scsw) == | |
23d805b6 | 2697 | (DEV_STAT_CHN_END | DEV_STAT_DEV_END))) { |
1da177e4 | 2698 | |
fc19f381 | 2699 | DBF_DEV_EVENT(DBF_DEBUG, device, |
1da177e4 LT |
2700 | "ERP called for successful request %p" |
2701 | " - NO ERP necessary", cqr); | |
2702 | ||
2703 | cqr->status = DASD_CQR_DONE; | |
2704 | ||
2705 | return cqr; | |
2706 | } | |
1da177e4 LT |
2707 | |
2708 | /* check if error happened before */ | |
2709 | erp = dasd_3990_erp_in_erp(cqr); | |
2710 | ||
2711 | if (erp == NULL) { | |
2712 | /* no matching erp found - set up erp */ | |
2713 | erp = dasd_3990_erp_additional_erp(cqr); | |
2714 | } else { | |
2715 | /* matching erp found - set all leading erp's to DONE */ | |
2716 | erp = dasd_3990_erp_handle_match_erp(cqr, erp); | |
2717 | } | |
2718 | ||
9575bf26 HH |
2719 | if (device->features & DASD_FEATURE_ERPLOG) { |
2720 | /* print current erp_chain */ | |
fc19f381 SH |
2721 | dev_err(&device->cdev->dev, |
2722 | "ERP chain at END of ERP-ACTION\n"); | |
1da177e4 LT |
2723 | for (temp_erp = erp; |
2724 | temp_erp != NULL; temp_erp = temp_erp->refers) { | |
2725 | ||
fc19f381 SH |
2726 | dev_err(&device->cdev->dev, |
2727 | "ERP %p (%02x) refers to %p\n", | |
1da177e4 LT |
2728 | temp_erp, temp_erp->status, |
2729 | temp_erp->refers); | |
2730 | } | |
2731 | } | |
1da177e4 | 2732 | |
8e09f215 SW |
2733 | /* enqueue ERP request if it's a new one */ |
2734 | if (list_empty(&erp->blocklist)) { | |
2735 | cqr->status = DASD_CQR_IN_ERP; | |
2736 | /* add erp request before the cqr */ | |
2737 | list_add_tail(&erp->blocklist, &cqr->blocklist); | |
1da177e4 LT |
2738 | } |
2739 | ||
fc19f381 SH |
2740 | |
2741 | ||
1da177e4 LT |
2742 | return erp; |
2743 | ||
2744 | } /* end dasd_3990_erp_action */ |