Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * | |
3 | * linux/drivers/s390/scsi/zfcp_fsf.c | |
4 | * | |
5 | * FCP adapter driver for IBM eServer zSeries | |
6 | * | |
7 | * (C) Copyright IBM Corp. 2002, 2004 | |
8 | * | |
9 | * Author(s): Martin Peschke <mpeschke@de.ibm.com> | |
10 | * Raimund Schroeder <raimund.schroeder@de.ibm.com> | |
11 | * Aron Zeh | |
12 | * Wolfgang Taphorn | |
13 | * Stefan Bader <stefan.bader@de.ibm.com> | |
14 | * Heiko Carstens <heiko.carstens@de.ibm.com> | |
15 | * Andreas Herrmann <aherrman@de.ibm.com> | |
16 | * Volker Sameske <sameske@de.ibm.com> | |
17 | * | |
18 | * This program is free software; you can redistribute it and/or modify | |
19 | * it under the terms of the GNU General Public License as published by | |
20 | * the Free Software Foundation; either version 2, or (at your option) | |
21 | * any later version. | |
22 | * | |
23 | * This program is distributed in the hope that it will be useful, | |
24 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
25 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
26 | * GNU General Public License for more details. | |
27 | * | |
28 | * You should have received a copy of the GNU General Public License | |
29 | * along with this program; if not, write to the Free Software | |
30 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
31 | */ | |
32 | ||
1da177e4 LT |
33 | #include "zfcp_ext.h" |
34 | ||
35 | static int zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *); | |
36 | static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *); | |
37 | static int zfcp_fsf_open_port_handler(struct zfcp_fsf_req *); | |
38 | static int zfcp_fsf_close_port_handler(struct zfcp_fsf_req *); | |
39 | static int zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *); | |
40 | static int zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *); | |
41 | static int zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *); | |
42 | static int zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *); | |
43 | static int zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *); | |
44 | static int zfcp_fsf_send_fcp_command_task_management_handler( | |
45 | struct zfcp_fsf_req *); | |
46 | static int zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *); | |
47 | static int zfcp_fsf_status_read_handler(struct zfcp_fsf_req *); | |
48 | static int zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *); | |
49 | static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *); | |
50 | static int zfcp_fsf_control_file_handler(struct zfcp_fsf_req *); | |
51 | static inline int zfcp_fsf_req_sbal_check( | |
52 | unsigned long *, struct zfcp_qdio_queue *, int); | |
53 | static inline int zfcp_use_one_sbal( | |
54 | struct scatterlist *, int, struct scatterlist *, int); | |
55 | static struct zfcp_fsf_req *zfcp_fsf_req_alloc(mempool_t *, int); | |
56 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *, struct timer_list *); | |
57 | static int zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *); | |
58 | static int zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *); | |
59 | static int zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *); | |
aef4a983 MS |
60 | static void zfcp_fsf_link_down_info_eval(struct zfcp_adapter *, |
61 | struct fsf_link_down_info *); | |
1da177e4 LT |
62 | static int zfcp_fsf_req_dispatch(struct zfcp_fsf_req *); |
63 | static void zfcp_fsf_req_dismiss(struct zfcp_fsf_req *); | |
1da177e4 LT |
64 | |
65 | /* association between FSF command and FSF QTCB type */ | |
66 | static u32 fsf_qtcb_type[] = { | |
67 | [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND, | |
68 | [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND, | |
69 | [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND, | |
70 | [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND, | |
71 | [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND, | |
72 | [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND, | |
73 | [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND, | |
74 | [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND, | |
75 | [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND, | |
76 | [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND, | |
77 | [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND, | |
78 | [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND, | |
79 | [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND | |
80 | }; | |
81 | ||
82 | static const char zfcp_act_subtable_type[5][8] = { | |
83 | "unknown", "OS", "WWPN", "DID", "LUN" | |
84 | }; | |
85 | ||
86 | /****************************************************************/ | |
87 | /*************** FSF related Functions *************************/ | |
88 | /****************************************************************/ | |
89 | ||
90 | #define ZFCP_LOG_AREA ZFCP_LOG_AREA_FSF | |
91 | ||
92 | /* | |
93 | * function: zfcp_fsf_req_alloc | |
94 | * | |
95 | * purpose: Obtains an fsf_req and potentially a qtcb (for all but | |
96 | * unsolicited requests) via helper functions | |
97 | * Does some initial fsf request set-up. | |
98 | * | |
99 | * returns: pointer to allocated fsf_req if successfull | |
100 | * NULL otherwise | |
101 | * | |
102 | * locks: none | |
103 | * | |
104 | */ | |
105 | static struct zfcp_fsf_req * | |
106 | zfcp_fsf_req_alloc(mempool_t *pool, int req_flags) | |
107 | { | |
108 | size_t size; | |
109 | void *ptr; | |
110 | struct zfcp_fsf_req *fsf_req = NULL; | |
111 | ||
112 | if (req_flags & ZFCP_REQ_NO_QTCB) | |
113 | size = sizeof(struct zfcp_fsf_req); | |
114 | else | |
115 | size = sizeof(struct zfcp_fsf_req_pool_element); | |
116 | ||
117 | if (likely(pool != NULL)) | |
118 | ptr = mempool_alloc(pool, GFP_ATOMIC); | |
119 | else | |
120 | ptr = kmalloc(size, GFP_ATOMIC); | |
121 | ||
122 | if (unlikely(NULL == ptr)) | |
123 | goto out; | |
124 | ||
125 | memset(ptr, 0, size); | |
126 | ||
127 | if (req_flags & ZFCP_REQ_NO_QTCB) { | |
128 | fsf_req = (struct zfcp_fsf_req *) ptr; | |
129 | } else { | |
130 | fsf_req = &((struct zfcp_fsf_req_pool_element *) ptr)->fsf_req; | |
131 | fsf_req->qtcb = | |
132 | &((struct zfcp_fsf_req_pool_element *) ptr)->qtcb; | |
133 | } | |
134 | ||
135 | fsf_req->pool = pool; | |
136 | ||
137 | out: | |
138 | return fsf_req; | |
139 | } | |
140 | ||
141 | /* | |
142 | * function: zfcp_fsf_req_free | |
143 | * | |
144 | * purpose: Frees the memory of an fsf_req (and potentially a qtcb) or | |
145 | * returns it into the pool via helper functions. | |
146 | * | |
147 | * returns: sod all | |
148 | * | |
149 | * locks: none | |
150 | */ | |
1db2c9c0 | 151 | void |
1da177e4 LT |
152 | zfcp_fsf_req_free(struct zfcp_fsf_req *fsf_req) |
153 | { | |
154 | if (likely(fsf_req->pool != NULL)) | |
155 | mempool_free(fsf_req, fsf_req->pool); | |
1db2c9c0 AH |
156 | else |
157 | kfree(fsf_req); | |
1da177e4 LT |
158 | } |
159 | ||
160 | /* | |
161 | * function: | |
162 | * | |
163 | * purpose: | |
164 | * | |
165 | * returns: | |
166 | * | |
167 | * note: qdio queues shall be down (no ongoing inbound processing) | |
168 | */ | |
169 | int | |
170 | zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter) | |
171 | { | |
1da177e4 | 172 | struct zfcp_fsf_req *fsf_req, *tmp; |
1db2c9c0 AH |
173 | unsigned long flags; |
174 | LIST_HEAD(remove_queue); | |
1da177e4 | 175 | |
1db2c9c0 AH |
176 | spin_lock_irqsave(&adapter->fsf_req_list_lock, flags); |
177 | list_splice_init(&adapter->fsf_req_list_head, &remove_queue); | |
178 | atomic_set(&adapter->fsf_reqs_active, 0); | |
179 | spin_unlock_irqrestore(&adapter->fsf_req_list_lock, flags); | |
1da177e4 | 180 | |
1db2c9c0 AH |
181 | list_for_each_entry_safe(fsf_req, tmp, &remove_queue, list) { |
182 | list_del(&fsf_req->list); | |
183 | zfcp_fsf_req_dismiss(fsf_req); | |
1da177e4 LT |
184 | } |
185 | ||
1db2c9c0 | 186 | return 0; |
1da177e4 LT |
187 | } |
188 | ||
189 | /* | |
190 | * function: | |
191 | * | |
192 | * purpose: | |
193 | * | |
194 | * returns: | |
195 | */ | |
196 | static void | |
197 | zfcp_fsf_req_dismiss(struct zfcp_fsf_req *fsf_req) | |
198 | { | |
199 | fsf_req->status |= ZFCP_STATUS_FSFREQ_DISMISSED; | |
200 | zfcp_fsf_req_complete(fsf_req); | |
201 | } | |
202 | ||
203 | /* | |
204 | * function: zfcp_fsf_req_complete | |
205 | * | |
206 | * purpose: Updates active counts and timers for openfcp-reqs | |
207 | * May cleanup request after req_eval returns | |
208 | * | |
209 | * returns: 0 - success | |
210 | * !0 - failure | |
211 | * | |
212 | * context: | |
213 | */ | |
214 | int | |
215 | zfcp_fsf_req_complete(struct zfcp_fsf_req *fsf_req) | |
216 | { | |
217 | int retval = 0; | |
218 | int cleanup; | |
1da177e4 LT |
219 | |
220 | if (unlikely(fsf_req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) { | |
221 | ZFCP_LOG_DEBUG("Status read response received\n"); | |
222 | /* | |
223 | * Note: all cleanup handling is done in the callchain of | |
224 | * the function call-chain below. | |
225 | */ | |
226 | zfcp_fsf_status_read_handler(fsf_req); | |
227 | goto out; | |
228 | } else | |
229 | zfcp_fsf_protstatus_eval(fsf_req); | |
230 | ||
231 | /* | |
232 | * fsf_req may be deleted due to waking up functions, so | |
233 | * cleanup is saved here and used later | |
234 | */ | |
235 | if (likely(fsf_req->status & ZFCP_STATUS_FSFREQ_CLEANUP)) | |
236 | cleanup = 1; | |
237 | else | |
238 | cleanup = 0; | |
239 | ||
240 | fsf_req->status |= ZFCP_STATUS_FSFREQ_COMPLETED; | |
241 | ||
242 | /* cleanup request if requested by initiator */ | |
243 | if (likely(cleanup)) { | |
244 | ZFCP_LOG_TRACE("removing FSF request %p\n", fsf_req); | |
245 | /* | |
246 | * lock must not be held here since it will be | |
247 | * grabed by the called routine, too | |
248 | */ | |
1db2c9c0 | 249 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
250 | } else { |
251 | /* notify initiator waiting for the requests completion */ | |
252 | ZFCP_LOG_TRACE("waking initiator of FSF request %p\n",fsf_req); | |
253 | /* | |
254 | * FIXME: Race! We must not access fsf_req here as it might have been | |
255 | * cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED | |
256 | * flag. It's an improbable case. But, we have the same paranoia for | |
257 | * the cleanup flag already. | |
258 | * Might better be handled using complete()? | |
259 | * (setting the flag and doing wakeup ought to be atomic | |
260 | * with regard to checking the flag as long as waitqueue is | |
261 | * part of the to be released structure) | |
262 | */ | |
263 | wake_up(&fsf_req->completion_wq); | |
264 | } | |
265 | ||
266 | out: | |
267 | return retval; | |
268 | } | |
269 | ||
270 | /* | |
271 | * function: zfcp_fsf_protstatus_eval | |
272 | * | |
273 | * purpose: evaluates the QTCB of the finished FSF request | |
274 | * and initiates appropriate actions | |
275 | * (usually calling FSF command specific handlers) | |
276 | * | |
277 | * returns: | |
278 | * | |
279 | * context: | |
280 | * | |
281 | * locks: | |
282 | */ | |
283 | static int | |
284 | zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *fsf_req) | |
285 | { | |
286 | int retval = 0; | |
287 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
8a36e453 MS |
288 | struct fsf_qtcb *qtcb = fsf_req->qtcb; |
289 | union fsf_prot_status_qual *prot_status_qual = | |
290 | &qtcb->prefix.prot_status_qual; | |
1da177e4 | 291 | |
8a36e453 | 292 | zfcp_hba_dbf_event_fsf_response(fsf_req); |
1da177e4 LT |
293 | |
294 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { | |
295 | ZFCP_LOG_DEBUG("fsf_req 0x%lx has been dismissed\n", | |
296 | (unsigned long) fsf_req); | |
297 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
298 | ZFCP_STATUS_FSFREQ_RETRY; /* only for SCSI cmnds. */ | |
1da177e4 LT |
299 | goto skip_protstatus; |
300 | } | |
301 | ||
302 | /* log additional information provided by FSF (if any) */ | |
8a36e453 | 303 | if (unlikely(qtcb->header.log_length)) { |
1da177e4 | 304 | /* do not trust them ;-) */ |
8a36e453 | 305 | if (qtcb->header.log_start > sizeof(struct fsf_qtcb)) { |
1da177e4 LT |
306 | ZFCP_LOG_NORMAL |
307 | ("bug: ULP (FSF logging) log data starts " | |
308 | "beyond end of packet header. Ignored. " | |
309 | "(start=%i, size=%li)\n", | |
8a36e453 | 310 | qtcb->header.log_start, |
1da177e4 LT |
311 | sizeof(struct fsf_qtcb)); |
312 | goto forget_log; | |
313 | } | |
8a36e453 | 314 | if ((size_t) (qtcb->header.log_start + qtcb->header.log_length) |
1da177e4 LT |
315 | > sizeof(struct fsf_qtcb)) { |
316 | ZFCP_LOG_NORMAL("bug: ULP (FSF logging) log data ends " | |
317 | "beyond end of packet header. Ignored. " | |
318 | "(start=%i, length=%i, size=%li)\n", | |
8a36e453 MS |
319 | qtcb->header.log_start, |
320 | qtcb->header.log_length, | |
1da177e4 LT |
321 | sizeof(struct fsf_qtcb)); |
322 | goto forget_log; | |
323 | } | |
324 | ZFCP_LOG_TRACE("ULP log data: \n"); | |
325 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, | |
8a36e453 MS |
326 | (char *) qtcb + qtcb->header.log_start, |
327 | qtcb->header.log_length); | |
1da177e4 LT |
328 | } |
329 | forget_log: | |
330 | ||
331 | /* evaluate FSF Protocol Status */ | |
8a36e453 | 332 | switch (qtcb->prefix.prot_status) { |
1da177e4 LT |
333 | |
334 | case FSF_PROT_GOOD: | |
1da177e4 | 335 | case FSF_PROT_FSF_STATUS_PRESENTED: |
1da177e4 LT |
336 | break; |
337 | ||
338 | case FSF_PROT_QTCB_VERSION_ERROR: | |
1da177e4 LT |
339 | ZFCP_LOG_NORMAL("error: The adapter %s contains " |
340 | "microcode of version 0x%x, the device driver " | |
341 | "only supports 0x%x. Aborting.\n", | |
342 | zfcp_get_busid_by_adapter(adapter), | |
8a36e453 MS |
343 | prot_status_qual->version_error.fsf_version, |
344 | ZFCP_QTCB_VERSION); | |
1da177e4 | 345 | zfcp_erp_adapter_shutdown(adapter, 0); |
1da177e4 LT |
346 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
347 | break; | |
348 | ||
349 | case FSF_PROT_SEQ_NUMB_ERROR: | |
1da177e4 LT |
350 | ZFCP_LOG_NORMAL("bug: Sequence number mismatch between " |
351 | "driver (0x%x) and adapter %s (0x%x). " | |
352 | "Restarting all operations on this adapter.\n", | |
8a36e453 | 353 | qtcb->prefix.req_seq_no, |
1da177e4 | 354 | zfcp_get_busid_by_adapter(adapter), |
8a36e453 | 355 | prot_status_qual->sequence_error.exp_req_seq_no); |
1da177e4 | 356 | zfcp_erp_adapter_reopen(adapter, 0); |
1da177e4 LT |
357 | fsf_req->status |= ZFCP_STATUS_FSFREQ_RETRY; |
358 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
359 | break; | |
360 | ||
361 | case FSF_PROT_UNSUPP_QTCB_TYPE: | |
1da177e4 LT |
362 | ZFCP_LOG_NORMAL("error: Packet header type used by the " |
363 | "device driver is incompatible with " | |
364 | "that used on adapter %s. " | |
365 | "Stopping all operations on this adapter.\n", | |
366 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 | 367 | zfcp_erp_adapter_shutdown(adapter, 0); |
1da177e4 LT |
368 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
369 | break; | |
370 | ||
371 | case FSF_PROT_HOST_CONNECTION_INITIALIZING: | |
1da177e4 LT |
372 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
373 | atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT, | |
374 | &(adapter->status)); | |
1da177e4 LT |
375 | break; |
376 | ||
377 | case FSF_PROT_DUPLICATE_REQUEST_ID: | |
1da177e4 LT |
378 | ZFCP_LOG_NORMAL("bug: The request identifier 0x%Lx " |
379 | "to the adapter %s is ambiguous. " | |
aef4a983 MS |
380 | "Stopping all operations on this adapter.\n", |
381 | *(unsigned long long*) | |
382 | (&qtcb->bottom.support.req_handle), | |
1da177e4 | 383 | zfcp_get_busid_by_adapter(adapter)); |
1da177e4 | 384 | zfcp_erp_adapter_shutdown(adapter, 0); |
1da177e4 LT |
385 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
386 | break; | |
387 | ||
388 | case FSF_PROT_LINK_DOWN: | |
aef4a983 MS |
389 | zfcp_fsf_link_down_info_eval(adapter, |
390 | &prot_status_qual->link_down_info); | |
2f8f3ed5 | 391 | zfcp_erp_adapter_reopen(adapter, 0); |
1da177e4 LT |
392 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
393 | break; | |
394 | ||
395 | case FSF_PROT_REEST_QUEUE: | |
8a36e453 | 396 | ZFCP_LOG_NORMAL("The local link to adapter with " |
1da177e4 LT |
397 | "%s was re-plugged. " |
398 | "Re-starting operations on this adapter.\n", | |
399 | zfcp_get_busid_by_adapter(adapter)); | |
400 | /* All ports should be marked as ready to run again */ | |
401 | zfcp_erp_modify_adapter_status(adapter, | |
402 | ZFCP_STATUS_COMMON_RUNNING, | |
403 | ZFCP_SET); | |
404 | zfcp_erp_adapter_reopen(adapter, | |
405 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | |
406 | | ZFCP_STATUS_COMMON_ERP_FAILED); | |
1da177e4 LT |
407 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
408 | break; | |
409 | ||
410 | case FSF_PROT_ERROR_STATE: | |
1da177e4 LT |
411 | ZFCP_LOG_NORMAL("error: The adapter %s " |
412 | "has entered the error state. " | |
413 | "Restarting all operations on this " | |
414 | "adapter.\n", | |
415 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 | 416 | zfcp_erp_adapter_reopen(adapter, 0); |
1da177e4 LT |
417 | fsf_req->status |= ZFCP_STATUS_FSFREQ_RETRY; |
418 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
419 | break; | |
420 | ||
421 | default: | |
422 | ZFCP_LOG_NORMAL("bug: Transfer protocol status information " | |
423 | "provided by the adapter %s " | |
424 | "is not compatible with the device driver. " | |
425 | "Stopping all operations on this adapter. " | |
426 | "(debug info 0x%x).\n", | |
427 | zfcp_get_busid_by_adapter(adapter), | |
8a36e453 | 428 | qtcb->prefix.prot_status); |
1da177e4 LT |
429 | zfcp_erp_adapter_shutdown(adapter, 0); |
430 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
431 | } | |
432 | ||
433 | skip_protstatus: | |
434 | /* | |
435 | * always call specific handlers to give them a chance to do | |
436 | * something meaningful even in error cases | |
437 | */ | |
438 | zfcp_fsf_fsfstatus_eval(fsf_req); | |
439 | return retval; | |
440 | } | |
441 | ||
442 | /* | |
443 | * function: zfcp_fsf_fsfstatus_eval | |
444 | * | |
445 | * purpose: evaluates FSF status of completed FSF request | |
446 | * and acts accordingly | |
447 | * | |
448 | * returns: | |
449 | */ | |
450 | static int | |
451 | zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *fsf_req) | |
452 | { | |
453 | int retval = 0; | |
454 | ||
455 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
456 | goto skip_fsfstatus; | |
457 | } | |
458 | ||
459 | /* evaluate FSF Status */ | |
460 | switch (fsf_req->qtcb->header.fsf_status) { | |
461 | case FSF_UNKNOWN_COMMAND: | |
1da177e4 LT |
462 | ZFCP_LOG_NORMAL("bug: Command issued by the device driver is " |
463 | "not known by the adapter %s " | |
464 | "Stopping all operations on this adapter. " | |
465 | "(debug info 0x%x).\n", | |
466 | zfcp_get_busid_by_adapter(fsf_req->adapter), | |
467 | fsf_req->qtcb->header.fsf_command); | |
1da177e4 | 468 | zfcp_erp_adapter_shutdown(fsf_req->adapter, 0); |
1da177e4 LT |
469 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
470 | break; | |
471 | ||
472 | case FSF_FCP_RSP_AVAILABLE: | |
1da177e4 LT |
473 | ZFCP_LOG_DEBUG("FCP Sense data will be presented to the " |
474 | "SCSI stack.\n"); | |
1da177e4 LT |
475 | break; |
476 | ||
477 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
478 | zfcp_fsf_fsfstatus_qual_eval(fsf_req); |
479 | break; | |
1da177e4 LT |
480 | } |
481 | ||
482 | skip_fsfstatus: | |
483 | /* | |
484 | * always call specific handlers to give them a chance to do | |
485 | * something meaningful even in error cases | |
486 | */ | |
487 | zfcp_fsf_req_dispatch(fsf_req); | |
488 | ||
489 | return retval; | |
490 | } | |
491 | ||
492 | /* | |
493 | * function: zfcp_fsf_fsfstatus_qual_eval | |
494 | * | |
495 | * purpose: evaluates FSF status-qualifier of completed FSF request | |
496 | * and acts accordingly | |
497 | * | |
498 | * returns: | |
499 | */ | |
500 | static int | |
501 | zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *fsf_req) | |
502 | { | |
503 | int retval = 0; | |
504 | ||
505 | switch (fsf_req->qtcb->header.fsf_status_qual.word[0]) { | |
506 | case FSF_SQ_FCP_RSP_AVAILABLE: | |
1da177e4 LT |
507 | break; |
508 | case FSF_SQ_RETRY_IF_POSSIBLE: | |
1da177e4 | 509 | /* The SCSI-stack may now issue retries or escalate */ |
1da177e4 LT |
510 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
511 | break; | |
512 | case FSF_SQ_COMMAND_ABORTED: | |
1da177e4 | 513 | /* Carry the aborted state on to upper layer */ |
1da177e4 LT |
514 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTED; |
515 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
516 | break; | |
517 | case FSF_SQ_NO_RECOM: | |
1da177e4 LT |
518 | ZFCP_LOG_NORMAL("bug: No recommendation could be given for a" |
519 | "problem on the adapter %s " | |
520 | "Stopping all operations on this adapter. ", | |
521 | zfcp_get_busid_by_adapter(fsf_req->adapter)); | |
522 | zfcp_erp_adapter_shutdown(fsf_req->adapter, 0); | |
1da177e4 LT |
523 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
524 | break; | |
525 | case FSF_SQ_ULP_PROGRAMMING_ERROR: | |
1da177e4 LT |
526 | ZFCP_LOG_NORMAL("error: not enough SBALs for data transfer " |
527 | "(adapter %s)\n", | |
528 | zfcp_get_busid_by_adapter(fsf_req->adapter)); | |
1da177e4 LT |
529 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
530 | break; | |
531 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
532 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
533 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
534 | /* dealt with in the respective functions */ | |
535 | break; | |
536 | default: | |
537 | ZFCP_LOG_NORMAL("bug: Additional status info could " | |
538 | "not be interpreted properly.\n"); | |
539 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL, | |
540 | (char *) &fsf_req->qtcb->header.fsf_status_qual, | |
541 | sizeof (union fsf_status_qual)); | |
1da177e4 LT |
542 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
543 | break; | |
544 | } | |
545 | ||
546 | return retval; | |
547 | } | |
548 | ||
aef4a983 MS |
549 | /** |
550 | * zfcp_fsf_link_down_info_eval - evaluate link down information block | |
551 | */ | |
552 | static void | |
553 | zfcp_fsf_link_down_info_eval(struct zfcp_adapter *adapter, | |
554 | struct fsf_link_down_info *link_down) | |
555 | { | |
ee69ab7a MS |
556 | if (atomic_test_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, |
557 | &adapter->status)) | |
558 | return; | |
559 | ||
560 | atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status); | |
561 | ||
2f8f3ed5 AH |
562 | if (link_down == NULL) |
563 | goto out; | |
ee69ab7a | 564 | |
aef4a983 MS |
565 | switch (link_down->error_code) { |
566 | case FSF_PSQ_LINK_NO_LIGHT: | |
567 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
568 | "(no light detected)\n", | |
569 | zfcp_get_busid_by_adapter(adapter)); | |
570 | break; | |
571 | case FSF_PSQ_LINK_WRAP_PLUG: | |
572 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
573 | "(wrap plug detected)\n", | |
574 | zfcp_get_busid_by_adapter(adapter)); | |
575 | break; | |
576 | case FSF_PSQ_LINK_NO_FCP: | |
577 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
578 | "(adjacent node on link does not support FCP)\n", | |
579 | zfcp_get_busid_by_adapter(adapter)); | |
580 | break; | |
581 | case FSF_PSQ_LINK_FIRMWARE_UPDATE: | |
582 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
583 | "(firmware update in progress)\n", | |
584 | zfcp_get_busid_by_adapter(adapter)); | |
585 | break; | |
586 | case FSF_PSQ_LINK_INVALID_WWPN: | |
587 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
588 | "(duplicate or invalid WWPN detected)\n", | |
589 | zfcp_get_busid_by_adapter(adapter)); | |
590 | break; | |
591 | case FSF_PSQ_LINK_NO_NPIV_SUPPORT: | |
592 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
593 | "(no support for NPIV by Fabric)\n", | |
594 | zfcp_get_busid_by_adapter(adapter)); | |
595 | break; | |
596 | case FSF_PSQ_LINK_NO_FCP_RESOURCES: | |
597 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
598 | "(out of resource in FCP daughtercard)\n", | |
599 | zfcp_get_busid_by_adapter(adapter)); | |
600 | break; | |
601 | case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: | |
602 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
603 | "(out of resource in Fabric)\n", | |
604 | zfcp_get_busid_by_adapter(adapter)); | |
605 | break; | |
606 | case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: | |
607 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
608 | "(unable to Fabric login)\n", | |
609 | zfcp_get_busid_by_adapter(adapter)); | |
610 | break; | |
611 | case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: | |
612 | ZFCP_LOG_NORMAL("WWPN assignment file corrupted on adapter %s\n", | |
613 | zfcp_get_busid_by_adapter(adapter)); | |
614 | break; | |
615 | case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: | |
616 | ZFCP_LOG_NORMAL("Mode table corrupted on adapter %s\n", | |
617 | zfcp_get_busid_by_adapter(adapter)); | |
618 | break; | |
619 | case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: | |
620 | ZFCP_LOG_NORMAL("No WWPN for assignment table on adapter %s\n", | |
621 | zfcp_get_busid_by_adapter(adapter)); | |
622 | break; | |
623 | default: | |
624 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
625 | "(warning: unknown reason code %d)\n", | |
626 | zfcp_get_busid_by_adapter(adapter), | |
627 | link_down->error_code); | |
628 | } | |
629 | ||
630 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) | |
631 | ZFCP_LOG_DEBUG("Debug information to link down: " | |
632 | "primary_status=0x%02x " | |
633 | "ioerr_code=0x%02x " | |
634 | "action_code=0x%02x " | |
635 | "reason_code=0x%02x " | |
636 | "explanation_code=0x%02x " | |
637 | "vendor_specific_code=0x%02x\n", | |
638 | link_down->primary_status, | |
639 | link_down->ioerr_code, | |
640 | link_down->action_code, | |
641 | link_down->reason_code, | |
642 | link_down->explanation_code, | |
643 | link_down->vendor_specific_code); | |
644 | ||
2f8f3ed5 AH |
645 | out: |
646 | zfcp_erp_adapter_failed(adapter); | |
aef4a983 MS |
647 | } |
648 | ||
1da177e4 LT |
649 | /* |
650 | * function: zfcp_fsf_req_dispatch | |
651 | * | |
652 | * purpose: calls the appropriate command specific handler | |
653 | * | |
654 | * returns: | |
655 | */ | |
656 | static int | |
657 | zfcp_fsf_req_dispatch(struct zfcp_fsf_req *fsf_req) | |
658 | { | |
659 | struct zfcp_erp_action *erp_action = fsf_req->erp_action; | |
660 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
661 | int retval = 0; | |
662 | ||
1da177e4 LT |
663 | |
664 | switch (fsf_req->fsf_command) { | |
665 | ||
666 | case FSF_QTCB_FCP_CMND: | |
1da177e4 LT |
667 | zfcp_fsf_send_fcp_command_handler(fsf_req); |
668 | break; | |
669 | ||
670 | case FSF_QTCB_ABORT_FCP_CMND: | |
1da177e4 LT |
671 | zfcp_fsf_abort_fcp_command_handler(fsf_req); |
672 | break; | |
673 | ||
674 | case FSF_QTCB_SEND_GENERIC: | |
1da177e4 LT |
675 | zfcp_fsf_send_ct_handler(fsf_req); |
676 | break; | |
677 | ||
678 | case FSF_QTCB_OPEN_PORT_WITH_DID: | |
1da177e4 LT |
679 | zfcp_fsf_open_port_handler(fsf_req); |
680 | break; | |
681 | ||
682 | case FSF_QTCB_OPEN_LUN: | |
1da177e4 LT |
683 | zfcp_fsf_open_unit_handler(fsf_req); |
684 | break; | |
685 | ||
686 | case FSF_QTCB_CLOSE_LUN: | |
1da177e4 LT |
687 | zfcp_fsf_close_unit_handler(fsf_req); |
688 | break; | |
689 | ||
690 | case FSF_QTCB_CLOSE_PORT: | |
1da177e4 LT |
691 | zfcp_fsf_close_port_handler(fsf_req); |
692 | break; | |
693 | ||
694 | case FSF_QTCB_CLOSE_PHYSICAL_PORT: | |
1da177e4 LT |
695 | zfcp_fsf_close_physical_port_handler(fsf_req); |
696 | break; | |
697 | ||
698 | case FSF_QTCB_EXCHANGE_CONFIG_DATA: | |
1da177e4 LT |
699 | zfcp_fsf_exchange_config_data_handler(fsf_req); |
700 | break; | |
701 | ||
702 | case FSF_QTCB_EXCHANGE_PORT_DATA: | |
1da177e4 LT |
703 | zfcp_fsf_exchange_port_data_handler(fsf_req); |
704 | break; | |
705 | ||
706 | case FSF_QTCB_SEND_ELS: | |
1da177e4 LT |
707 | zfcp_fsf_send_els_handler(fsf_req); |
708 | break; | |
709 | ||
710 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
1da177e4 LT |
711 | zfcp_fsf_control_file_handler(fsf_req); |
712 | break; | |
713 | ||
714 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
1da177e4 LT |
715 | zfcp_fsf_control_file_handler(fsf_req); |
716 | break; | |
717 | ||
718 | default: | |
1da177e4 LT |
719 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
720 | ZFCP_LOG_NORMAL("bug: Command issued by the device driver is " | |
721 | "not supported by the adapter %s\n", | |
8a36e453 | 722 | zfcp_get_busid_by_adapter(adapter)); |
1da177e4 LT |
723 | if (fsf_req->fsf_command != fsf_req->qtcb->header.fsf_command) |
724 | ZFCP_LOG_NORMAL | |
725 | ("bug: Command issued by the device driver differs " | |
726 | "from the command returned by the adapter %s " | |
727 | "(debug info 0x%x, 0x%x).\n", | |
8a36e453 | 728 | zfcp_get_busid_by_adapter(adapter), |
1da177e4 LT |
729 | fsf_req->fsf_command, |
730 | fsf_req->qtcb->header.fsf_command); | |
731 | } | |
732 | ||
733 | if (!erp_action) | |
734 | return retval; | |
735 | ||
1da177e4 LT |
736 | zfcp_erp_async_handler(erp_action, 0); |
737 | ||
738 | return retval; | |
739 | } | |
740 | ||
741 | /* | |
742 | * function: zfcp_fsf_status_read | |
743 | * | |
744 | * purpose: initiates a Status Read command at the specified adapter | |
745 | * | |
746 | * returns: | |
747 | */ | |
748 | int | |
749 | zfcp_fsf_status_read(struct zfcp_adapter *adapter, int req_flags) | |
750 | { | |
751 | struct zfcp_fsf_req *fsf_req; | |
752 | struct fsf_status_read_buffer *status_buffer; | |
753 | unsigned long lock_flags; | |
754 | volatile struct qdio_buffer_element *sbale; | |
755 | int retval = 0; | |
756 | ||
757 | /* setup new FSF request */ | |
758 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS, | |
759 | req_flags | ZFCP_REQ_NO_QTCB, | |
760 | adapter->pool.fsf_req_status_read, | |
761 | &lock_flags, &fsf_req); | |
762 | if (retval < 0) { | |
763 | ZFCP_LOG_INFO("error: Could not create unsolicited status " | |
764 | "buffer for adapter %s.\n", | |
765 | zfcp_get_busid_by_adapter(adapter)); | |
766 | goto failed_req_create; | |
767 | } | |
768 | ||
769 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
770 | sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS; | |
771 | sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY; | |
772 | fsf_req->sbale_curr = 2; | |
773 | ||
774 | status_buffer = | |
775 | mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC); | |
776 | if (!status_buffer) { | |
777 | ZFCP_LOG_NORMAL("bug: could not get some buffer\n"); | |
778 | goto failed_buf; | |
779 | } | |
780 | memset(status_buffer, 0, sizeof (struct fsf_status_read_buffer)); | |
059c97d0 | 781 | fsf_req->data = (unsigned long) status_buffer; |
1da177e4 LT |
782 | |
783 | /* insert pointer to respective buffer */ | |
784 | sbale = zfcp_qdio_sbale_curr(fsf_req); | |
785 | sbale->addr = (void *) status_buffer; | |
786 | sbale->length = sizeof(struct fsf_status_read_buffer); | |
787 | ||
788 | /* start QDIO request for this FSF request */ | |
789 | retval = zfcp_fsf_req_send(fsf_req, NULL); | |
790 | if (retval) { | |
791 | ZFCP_LOG_DEBUG("error: Could not set-up unsolicited status " | |
792 | "environment.\n"); | |
793 | goto failed_req_send; | |
794 | } | |
795 | ||
796 | ZFCP_LOG_TRACE("Status Read request initiated (adapter%s)\n", | |
797 | zfcp_get_busid_by_adapter(adapter)); | |
798 | goto out; | |
799 | ||
800 | failed_req_send: | |
801 | mempool_free(status_buffer, adapter->pool.data_status_read); | |
802 | ||
803 | failed_buf: | |
804 | zfcp_fsf_req_free(fsf_req); | |
805 | failed_req_create: | |
8a36e453 | 806 | zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL); |
1da177e4 LT |
807 | out: |
808 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
809 | return retval; | |
810 | } | |
811 | ||
812 | static int | |
813 | zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *fsf_req) | |
814 | { | |
815 | struct fsf_status_read_buffer *status_buffer; | |
816 | struct zfcp_adapter *adapter; | |
817 | struct zfcp_port *port; | |
818 | unsigned long flags; | |
819 | ||
059c97d0 | 820 | status_buffer = (struct fsf_status_read_buffer *) fsf_req->data; |
1da177e4 LT |
821 | adapter = fsf_req->adapter; |
822 | ||
823 | read_lock_irqsave(&zfcp_data.config_lock, flags); | |
824 | list_for_each_entry(port, &adapter->port_list_head, list) | |
825 | if (port->d_id == (status_buffer->d_id & ZFCP_DID_MASK)) | |
826 | break; | |
827 | read_unlock_irqrestore(&zfcp_data.config_lock, flags); | |
828 | ||
829 | if (!port || (port->d_id != (status_buffer->d_id & ZFCP_DID_MASK))) { | |
830 | ZFCP_LOG_NORMAL("bug: Reopen port indication received for" | |
831 | "nonexisting port with d_id 0x%08x on " | |
832 | "adapter %s. Ignored.\n", | |
833 | status_buffer->d_id & ZFCP_DID_MASK, | |
834 | zfcp_get_busid_by_adapter(adapter)); | |
835 | goto out; | |
836 | } | |
837 | ||
838 | switch (status_buffer->status_subtype) { | |
839 | ||
840 | case FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT: | |
1da177e4 LT |
841 | debug_text_event(adapter->erp_dbf, 3, "unsol_pc_phys:"); |
842 | zfcp_erp_port_reopen(port, 0); | |
843 | break; | |
844 | ||
845 | case FSF_STATUS_READ_SUB_ERROR_PORT: | |
1da177e4 LT |
846 | debug_text_event(adapter->erp_dbf, 1, "unsol_pc_err:"); |
847 | zfcp_erp_port_shutdown(port, 0); | |
848 | break; | |
849 | ||
850 | default: | |
851 | debug_text_event(adapter->erp_dbf, 0, "unsol_unk_sub:"); | |
852 | debug_exception(adapter->erp_dbf, 0, | |
853 | &status_buffer->status_subtype, sizeof (u32)); | |
854 | ZFCP_LOG_NORMAL("bug: Undefined status subtype received " | |
855 | "for a reopen indication on port with " | |
856 | "d_id 0x%08x on the adapter %s. " | |
857 | "Ignored. (debug info 0x%x)\n", | |
858 | status_buffer->d_id, | |
859 | zfcp_get_busid_by_adapter(adapter), | |
860 | status_buffer->status_subtype); | |
861 | } | |
862 | out: | |
863 | return 0; | |
864 | } | |
865 | ||
866 | /* | |
867 | * function: zfcp_fsf_status_read_handler | |
868 | * | |
869 | * purpose: is called for finished Open Port command | |
870 | * | |
871 | * returns: | |
872 | */ | |
873 | static int | |
874 | zfcp_fsf_status_read_handler(struct zfcp_fsf_req *fsf_req) | |
875 | { | |
876 | int retval = 0; | |
877 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
878 | struct fsf_status_read_buffer *status_buffer = | |
059c97d0 | 879 | (struct fsf_status_read_buffer *) fsf_req->data; |
1da177e4 LT |
880 | |
881 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { | |
8a36e453 | 882 | zfcp_hba_dbf_event_fsf_unsol("dism", adapter, status_buffer); |
1da177e4 | 883 | mempool_free(status_buffer, adapter->pool.data_status_read); |
1db2c9c0 | 884 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
885 | goto out; |
886 | } | |
887 | ||
8a36e453 MS |
888 | zfcp_hba_dbf_event_fsf_unsol("read", adapter, status_buffer); |
889 | ||
1da177e4 LT |
890 | switch (status_buffer->status_type) { |
891 | ||
892 | case FSF_STATUS_READ_PORT_CLOSED: | |
1da177e4 LT |
893 | zfcp_fsf_status_read_port_closed(fsf_req); |
894 | break; | |
895 | ||
896 | case FSF_STATUS_READ_INCOMING_ELS: | |
1da177e4 LT |
897 | zfcp_fsf_incoming_els(fsf_req); |
898 | break; | |
899 | ||
900 | case FSF_STATUS_READ_SENSE_DATA_AVAIL: | |
1da177e4 LT |
901 | ZFCP_LOG_INFO("unsolicited sense data received (adapter %s)\n", |
902 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 LT |
903 | break; |
904 | ||
905 | case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: | |
1da177e4 LT |
906 | ZFCP_LOG_NORMAL("Bit error threshold data received:\n"); |
907 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL, | |
908 | (char *) status_buffer, | |
909 | sizeof (struct fsf_status_read_buffer)); | |
910 | break; | |
911 | ||
912 | case FSF_STATUS_READ_LINK_DOWN: | |
aef4a983 MS |
913 | switch (status_buffer->status_subtype) { |
914 | case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: | |
915 | ZFCP_LOG_INFO("Physical link to adapter %s is down\n", | |
916 | zfcp_get_busid_by_adapter(adapter)); | |
ee69ab7a MS |
917 | zfcp_fsf_link_down_info_eval(adapter, |
918 | (struct fsf_link_down_info *) | |
919 | &status_buffer->payload); | |
aef4a983 MS |
920 | break; |
921 | case FSF_STATUS_READ_SUB_FDISC_FAILED: | |
922 | ZFCP_LOG_INFO("Local link to adapter %s is down " | |
923 | "due to failed FDISC login\n", | |
ee69ab7a MS |
924 | zfcp_get_busid_by_adapter(adapter)); |
925 | zfcp_fsf_link_down_info_eval(adapter, | |
926 | (struct fsf_link_down_info *) | |
927 | &status_buffer->payload); | |
aef4a983 MS |
928 | break; |
929 | case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE: | |
930 | ZFCP_LOG_INFO("Local link to adapter %s is down " | |
931 | "due to firmware update on adapter\n", | |
932 | zfcp_get_busid_by_adapter(adapter)); | |
ee69ab7a | 933 | zfcp_fsf_link_down_info_eval(adapter, NULL); |
aef4a983 MS |
934 | break; |
935 | default: | |
936 | ZFCP_LOG_INFO("Local link to adapter %s is down " | |
937 | "due to unknown reason\n", | |
938 | zfcp_get_busid_by_adapter(adapter)); | |
ee69ab7a | 939 | zfcp_fsf_link_down_info_eval(adapter, NULL); |
aef4a983 | 940 | }; |
1da177e4 LT |
941 | break; |
942 | ||
943 | case FSF_STATUS_READ_LINK_UP: | |
aef4a983 | 944 | ZFCP_LOG_NORMAL("Local link to adapter %s was replugged. " |
ee69ab7a MS |
945 | "Restarting operations on this adapter\n", |
946 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 LT |
947 | /* All ports should be marked as ready to run again */ |
948 | zfcp_erp_modify_adapter_status(adapter, | |
949 | ZFCP_STATUS_COMMON_RUNNING, | |
950 | ZFCP_SET); | |
951 | zfcp_erp_adapter_reopen(adapter, | |
952 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | |
953 | | ZFCP_STATUS_COMMON_ERP_FAILED); | |
954 | break; | |
955 | ||
9eb69aff MS |
956 | case FSF_STATUS_READ_NOTIFICATION_LOST: |
957 | ZFCP_LOG_NORMAL("Unsolicited status notification(s) lost: " | |
958 | "adapter %s%s%s%s%s%s%s%s%s\n", | |
959 | zfcp_get_busid_by_adapter(adapter), | |
960 | (status_buffer->status_subtype & | |
961 | FSF_STATUS_READ_SUB_INCOMING_ELS) ? | |
962 | ", incoming ELS" : "", | |
963 | (status_buffer->status_subtype & | |
964 | FSF_STATUS_READ_SUB_SENSE_DATA) ? | |
965 | ", sense data" : "", | |
966 | (status_buffer->status_subtype & | |
967 | FSF_STATUS_READ_SUB_LINK_STATUS) ? | |
968 | ", link status change" : "", | |
969 | (status_buffer->status_subtype & | |
970 | FSF_STATUS_READ_SUB_PORT_CLOSED) ? | |
971 | ", port close" : "", | |
972 | (status_buffer->status_subtype & | |
973 | FSF_STATUS_READ_SUB_BIT_ERROR_THRESHOLD) ? | |
974 | ", bit error exception" : "", | |
975 | (status_buffer->status_subtype & | |
976 | FSF_STATUS_READ_SUB_ACT_UPDATED) ? | |
977 | ", ACT update" : "", | |
978 | (status_buffer->status_subtype & | |
979 | FSF_STATUS_READ_SUB_ACT_HARDENED) ? | |
980 | ", ACT hardening" : "", | |
981 | (status_buffer->status_subtype & | |
982 | FSF_STATUS_READ_SUB_FEATURE_UPDATE_ALERT) ? | |
983 | ", adapter feature change" : ""); | |
984 | ||
985 | if (status_buffer->status_subtype & | |
986 | FSF_STATUS_READ_SUB_ACT_UPDATED) | |
987 | zfcp_erp_adapter_access_changed(adapter); | |
988 | break; | |
989 | ||
1da177e4 | 990 | case FSF_STATUS_READ_CFDC_UPDATED: |
8a36e453 | 991 | ZFCP_LOG_NORMAL("CFDC has been updated on the adapter %s\n", |
1da177e4 LT |
992 | zfcp_get_busid_by_adapter(adapter)); |
993 | zfcp_erp_adapter_access_changed(adapter); | |
994 | break; | |
995 | ||
996 | case FSF_STATUS_READ_CFDC_HARDENED: | |
1da177e4 LT |
997 | switch (status_buffer->status_subtype) { |
998 | case FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE: | |
8a36e453 | 999 | ZFCP_LOG_NORMAL("CFDC of adapter %s saved on SE\n", |
1da177e4 LT |
1000 | zfcp_get_busid_by_adapter(adapter)); |
1001 | break; | |
1002 | case FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE2: | |
8a36e453 | 1003 | ZFCP_LOG_NORMAL("CFDC of adapter %s has been copied " |
1da177e4 LT |
1004 | "to the secondary SE\n", |
1005 | zfcp_get_busid_by_adapter(adapter)); | |
1006 | break; | |
1007 | default: | |
8a36e453 | 1008 | ZFCP_LOG_NORMAL("CFDC of adapter %s has been hardened\n", |
1da177e4 LT |
1009 | zfcp_get_busid_by_adapter(adapter)); |
1010 | } | |
1011 | break; | |
1012 | ||
aef4a983 MS |
1013 | case FSF_STATUS_READ_FEATURE_UPDATE_ALERT: |
1014 | debug_text_event(adapter->erp_dbf, 2, "unsol_features:"); | |
1015 | ZFCP_LOG_INFO("List of supported features on adapter %s has " | |
1016 | "been changed from 0x%08X to 0x%08X\n", | |
1017 | zfcp_get_busid_by_adapter(adapter), | |
1018 | *(u32*) (status_buffer->payload + 4), | |
1019 | *(u32*) (status_buffer->payload)); | |
1020 | adapter->adapter_features = *(u32*) status_buffer->payload; | |
1021 | break; | |
1022 | ||
1da177e4 | 1023 | default: |
8a36e453 | 1024 | ZFCP_LOG_NORMAL("warning: An unsolicited status packet of unknown " |
1da177e4 LT |
1025 | "type was received (debug info 0x%x)\n", |
1026 | status_buffer->status_type); | |
1027 | ZFCP_LOG_DEBUG("Dump of status_read_buffer %p:\n", | |
1028 | status_buffer); | |
1029 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
1030 | (char *) status_buffer, | |
1031 | sizeof (struct fsf_status_read_buffer)); | |
1032 | break; | |
1033 | } | |
1034 | mempool_free(status_buffer, adapter->pool.data_status_read); | |
1db2c9c0 | 1035 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
1036 | /* |
1037 | * recycle buffer and start new request repeat until outbound | |
1038 | * queue is empty or adapter shutdown is requested | |
1039 | */ | |
1040 | /* | |
1041 | * FIXME(qdio): | |
1042 | * we may wait in the req_create for 5s during shutdown, so | |
1043 | * qdio_cleanup will have to wait at least that long before returning | |
1044 | * with failure to allow us a proper cleanup under all circumstances | |
1045 | */ | |
1046 | /* | |
1047 | * FIXME: | |
1048 | * allocation failure possible? (Is this code needed?) | |
1049 | */ | |
1050 | retval = zfcp_fsf_status_read(adapter, 0); | |
1051 | if (retval < 0) { | |
1052 | ZFCP_LOG_INFO("Failed to create unsolicited status read " | |
1053 | "request for the adapter %s.\n", | |
1054 | zfcp_get_busid_by_adapter(adapter)); | |
1055 | /* temporary fix to avoid status read buffer shortage */ | |
1056 | adapter->status_read_failed++; | |
1057 | if ((ZFCP_STATUS_READS_RECOM - adapter->status_read_failed) | |
1058 | < ZFCP_STATUS_READ_FAILED_THRESHOLD) { | |
1059 | ZFCP_LOG_INFO("restart adapter %s due to status read " | |
1060 | "buffer shortage\n", | |
1061 | zfcp_get_busid_by_adapter(adapter)); | |
1062 | zfcp_erp_adapter_reopen(adapter, 0); | |
1063 | } | |
1064 | } | |
1065 | out: | |
1066 | return retval; | |
1067 | } | |
1068 | ||
1069 | /* | |
1070 | * function: zfcp_fsf_abort_fcp_command | |
1071 | * | |
1072 | * purpose: tells FSF to abort a running SCSI command | |
1073 | * | |
1074 | * returns: address of initiated FSF request | |
1075 | * NULL - request could not be initiated | |
1076 | * | |
1077 | * FIXME(design): should be watched by a timeout !!! | |
1078 | * FIXME(design) shouldn't this be modified to return an int | |
1079 | * also...don't know how though | |
1080 | */ | |
1081 | struct zfcp_fsf_req * | |
1082 | zfcp_fsf_abort_fcp_command(unsigned long old_req_id, | |
1083 | struct zfcp_adapter *adapter, | |
1084 | struct zfcp_unit *unit, int req_flags) | |
1085 | { | |
1086 | volatile struct qdio_buffer_element *sbale; | |
1087 | unsigned long lock_flags; | |
1088 | struct zfcp_fsf_req *fsf_req = NULL; | |
1089 | int retval = 0; | |
1090 | ||
1091 | /* setup new FSF request */ | |
1092 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND, | |
1093 | req_flags, adapter->pool.fsf_req_abort, | |
1094 | &lock_flags, &fsf_req); | |
1095 | if (retval < 0) { | |
1096 | ZFCP_LOG_INFO("error: Failed to create an abort command " | |
1097 | "request for lun 0x%016Lx on port 0x%016Lx " | |
1098 | "on adapter %s.\n", | |
1099 | unit->fcp_lun, | |
1100 | unit->port->wwpn, | |
1101 | zfcp_get_busid_by_adapter(adapter)); | |
1102 | goto out; | |
1103 | } | |
1104 | ||
1105 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
1106 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1107 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1108 | ||
059c97d0 | 1109 | fsf_req->data = (unsigned long) unit; |
1da177e4 LT |
1110 | |
1111 | /* set handles of unit and its parent port in QTCB */ | |
1112 | fsf_req->qtcb->header.lun_handle = unit->handle; | |
1113 | fsf_req->qtcb->header.port_handle = unit->port->handle; | |
1114 | ||
1115 | /* set handle of request which should be aborted */ | |
1116 | fsf_req->qtcb->bottom.support.req_handle = (u64) old_req_id; | |
1117 | ||
1118 | /* start QDIO request for this FSF request */ | |
1119 | ||
1120 | zfcp_fsf_start_scsi_er_timer(adapter); | |
1121 | retval = zfcp_fsf_req_send(fsf_req, NULL); | |
1122 | if (retval) { | |
1123 | del_timer(&adapter->scsi_er_timer); | |
1124 | ZFCP_LOG_INFO("error: Failed to send abort command request " | |
1125 | "on adapter %s, port 0x%016Lx, unit 0x%016Lx\n", | |
1126 | zfcp_get_busid_by_adapter(adapter), | |
1127 | unit->port->wwpn, unit->fcp_lun); | |
1128 | zfcp_fsf_req_free(fsf_req); | |
1129 | fsf_req = NULL; | |
1130 | goto out; | |
1131 | } | |
1132 | ||
1133 | ZFCP_LOG_DEBUG("Abort FCP Command request initiated " | |
1134 | "(adapter%s, port d_id=0x%08x, " | |
1135 | "unit x%016Lx, old_req_id=0x%lx)\n", | |
1136 | zfcp_get_busid_by_adapter(adapter), | |
1137 | unit->port->d_id, | |
1138 | unit->fcp_lun, old_req_id); | |
1139 | out: | |
1140 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
1141 | return fsf_req; | |
1142 | } | |
1143 | ||
1144 | /* | |
1145 | * function: zfcp_fsf_abort_fcp_command_handler | |
1146 | * | |
1147 | * purpose: is called for finished Abort FCP Command request | |
1148 | * | |
1149 | * returns: | |
1150 | */ | |
1151 | static int | |
1152 | zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *new_fsf_req) | |
1153 | { | |
1154 | int retval = -EINVAL; | |
059c97d0 | 1155 | struct zfcp_unit *unit; |
1da177e4 LT |
1156 | unsigned char status_qual = |
1157 | new_fsf_req->qtcb->header.fsf_status_qual.word[0]; | |
1158 | ||
1159 | del_timer(&new_fsf_req->adapter->scsi_er_timer); | |
1160 | ||
1161 | if (new_fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
1162 | /* do not set ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED */ | |
1163 | goto skip_fsfstatus; | |
1164 | } | |
1165 | ||
059c97d0 AH |
1166 | unit = (struct zfcp_unit *) new_fsf_req->data; |
1167 | ||
1da177e4 LT |
1168 | /* evaluate FSF status in QTCB */ |
1169 | switch (new_fsf_req->qtcb->header.fsf_status) { | |
1170 | ||
1171 | case FSF_PORT_HANDLE_NOT_VALID: | |
1172 | if (status_qual >> 4 != status_qual % 0xf) { | |
1da177e4 LT |
1173 | debug_text_event(new_fsf_req->adapter->erp_dbf, 3, |
1174 | "fsf_s_phand_nv0"); | |
1175 | /* | |
1176 | * In this case a command that was sent prior to a port | |
1177 | * reopen was aborted (handles are different). This is | |
1178 | * fine. | |
1179 | */ | |
1180 | } else { | |
1da177e4 LT |
1181 | ZFCP_LOG_INFO("Temporary port identifier 0x%x for " |
1182 | "port 0x%016Lx on adapter %s invalid. " | |
1183 | "This may happen occasionally.\n", | |
1184 | unit->port->handle, | |
1185 | unit->port->wwpn, | |
1186 | zfcp_get_busid_by_unit(unit)); | |
1187 | ZFCP_LOG_INFO("status qualifier:\n"); | |
1188 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO, | |
1189 | (char *) &new_fsf_req->qtcb->header. | |
1190 | fsf_status_qual, | |
1191 | sizeof (union fsf_status_qual)); | |
1192 | /* Let's hope this sorts out the mess */ | |
1193 | debug_text_event(new_fsf_req->adapter->erp_dbf, 1, | |
1194 | "fsf_s_phand_nv1"); | |
1195 | zfcp_erp_adapter_reopen(unit->port->adapter, 0); | |
1196 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1197 | } | |
1198 | break; | |
1199 | ||
1200 | case FSF_LUN_HANDLE_NOT_VALID: | |
1201 | if (status_qual >> 4 != status_qual % 0xf) { | |
1202 | /* 2 */ | |
1da177e4 LT |
1203 | debug_text_event(new_fsf_req->adapter->erp_dbf, 3, |
1204 | "fsf_s_lhand_nv0"); | |
1205 | /* | |
1206 | * In this case a command that was sent prior to a unit | |
1207 | * reopen was aborted (handles are different). | |
1208 | * This is fine. | |
1209 | */ | |
1210 | } else { | |
1da177e4 LT |
1211 | ZFCP_LOG_INFO |
1212 | ("Warning: Temporary LUN identifier 0x%x of LUN " | |
1213 | "0x%016Lx on port 0x%016Lx on adapter %s is " | |
1214 | "invalid. This may happen in rare cases. " | |
1215 | "Trying to re-establish link.\n", | |
1216 | unit->handle, | |
1217 | unit->fcp_lun, | |
1218 | unit->port->wwpn, | |
1219 | zfcp_get_busid_by_unit(unit)); | |
1220 | ZFCP_LOG_DEBUG("Status qualifier data:\n"); | |
1221 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
1222 | (char *) &new_fsf_req->qtcb->header. | |
1223 | fsf_status_qual, | |
1224 | sizeof (union fsf_status_qual)); | |
1225 | /* Let's hope this sorts out the mess */ | |
1226 | debug_text_event(new_fsf_req->adapter->erp_dbf, 1, | |
1227 | "fsf_s_lhand_nv1"); | |
1228 | zfcp_erp_port_reopen(unit->port, 0); | |
1229 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1230 | } | |
1231 | break; | |
1232 | ||
1233 | case FSF_FCP_COMMAND_DOES_NOT_EXIST: | |
1da177e4 LT |
1234 | retval = 0; |
1235 | debug_text_event(new_fsf_req->adapter->erp_dbf, 3, | |
1236 | "fsf_s_no_exist"); | |
1237 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED; | |
1238 | break; | |
1239 | ||
1240 | case FSF_PORT_BOXED: | |
1da177e4 LT |
1241 | ZFCP_LOG_INFO("Remote port 0x%016Lx on adapter %s needs to " |
1242 | "be reopened\n", unit->port->wwpn, | |
1243 | zfcp_get_busid_by_unit(unit)); | |
1244 | debug_text_event(new_fsf_req->adapter->erp_dbf, 2, | |
1245 | "fsf_s_pboxed"); | |
d736a27b | 1246 | zfcp_erp_port_boxed(unit->port); |
1da177e4 LT |
1247 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
1248 | | ZFCP_STATUS_FSFREQ_RETRY; | |
1249 | break; | |
1250 | ||
1251 | case FSF_LUN_BOXED: | |
1da177e4 LT |
1252 | ZFCP_LOG_INFO( |
1253 | "unit 0x%016Lx on port 0x%016Lx on adapter %s needs " | |
1254 | "to be reopened\n", | |
1255 | unit->fcp_lun, unit->port->wwpn, | |
1256 | zfcp_get_busid_by_unit(unit)); | |
1257 | debug_text_event(new_fsf_req->adapter->erp_dbf, 1, "fsf_s_lboxed"); | |
d736a27b | 1258 | zfcp_erp_unit_boxed(unit); |
1da177e4 LT |
1259 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
1260 | | ZFCP_STATUS_FSFREQ_RETRY; | |
1261 | break; | |
1262 | ||
1263 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
1264 | switch (new_fsf_req->qtcb->header.fsf_status_qual.word[0]) { |
1265 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
1266 | debug_text_event(new_fsf_req->adapter->erp_dbf, 1, |
1267 | "fsf_sq_ltest"); | |
65a8d4e1 | 1268 | zfcp_test_link(unit->port); |
1da177e4 LT |
1269 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1270 | break; | |
1271 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
1272 | /* SCSI stack will escalate */ |
1273 | debug_text_event(new_fsf_req->adapter->erp_dbf, 1, | |
1274 | "fsf_sq_ulp"); | |
1275 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1276 | break; | |
1277 | default: | |
1278 | ZFCP_LOG_NORMAL | |
1279 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
1280 | new_fsf_req->qtcb->header.fsf_status_qual.word[0]); | |
1281 | debug_text_event(new_fsf_req->adapter->erp_dbf, 0, | |
1282 | "fsf_sq_inval:"); | |
1283 | debug_exception(new_fsf_req->adapter->erp_dbf, 0, | |
1284 | &new_fsf_req->qtcb->header. | |
1285 | fsf_status_qual.word[0], sizeof (u32)); | |
1286 | break; | |
1287 | } | |
1288 | break; | |
1289 | ||
1290 | case FSF_GOOD: | |
1da177e4 LT |
1291 | retval = 0; |
1292 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED; | |
1293 | break; | |
1294 | ||
1295 | default: | |
1296 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
1297 | "(debug info 0x%x)\n", | |
1298 | new_fsf_req->qtcb->header.fsf_status); | |
1299 | debug_text_event(new_fsf_req->adapter->erp_dbf, 0, | |
1300 | "fsf_s_inval:"); | |
1301 | debug_exception(new_fsf_req->adapter->erp_dbf, 0, | |
1302 | &new_fsf_req->qtcb->header.fsf_status, | |
1303 | sizeof (u32)); | |
1304 | break; | |
1305 | } | |
1306 | skip_fsfstatus: | |
1307 | return retval; | |
1308 | } | |
1309 | ||
1310 | /** | |
1311 | * zfcp_use_one_sbal - checks whether req buffer and resp bother each fit into | |
1312 | * one SBALE | |
1313 | * Two scatter-gather lists are passed, one for the reqeust and one for the | |
1314 | * response. | |
1315 | */ | |
1316 | static inline int | |
1317 | zfcp_use_one_sbal(struct scatterlist *req, int req_count, | |
1318 | struct scatterlist *resp, int resp_count) | |
1319 | { | |
1320 | return ((req_count == 1) && | |
1321 | (resp_count == 1) && | |
1322 | (((unsigned long) zfcp_sg_to_address(&req[0]) & | |
1323 | PAGE_MASK) == | |
1324 | ((unsigned long) (zfcp_sg_to_address(&req[0]) + | |
1325 | req[0].length - 1) & PAGE_MASK)) && | |
1326 | (((unsigned long) zfcp_sg_to_address(&resp[0]) & | |
1327 | PAGE_MASK) == | |
1328 | ((unsigned long) (zfcp_sg_to_address(&resp[0]) + | |
1329 | resp[0].length - 1) & PAGE_MASK))); | |
1330 | } | |
1331 | ||
1332 | /** | |
1333 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) | |
1334 | * @ct: pointer to struct zfcp_send_ct which conatins all needed data for | |
1335 | * the request | |
1336 | * @pool: pointer to memory pool, if non-null this pool is used to allocate | |
1337 | * a struct zfcp_fsf_req | |
1338 | * @erp_action: pointer to erp_action, if non-null the Generic Service request | |
1339 | * is sent within error recovery | |
1340 | */ | |
1341 | int | |
1342 | zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, | |
1343 | struct zfcp_erp_action *erp_action) | |
1344 | { | |
1345 | volatile struct qdio_buffer_element *sbale; | |
1346 | struct zfcp_port *port; | |
1347 | struct zfcp_adapter *adapter; | |
1348 | struct zfcp_fsf_req *fsf_req; | |
1349 | unsigned long lock_flags; | |
1350 | int bytes; | |
1351 | int ret = 0; | |
1352 | ||
1353 | port = ct->port; | |
1354 | adapter = port->adapter; | |
1355 | ||
1356 | ret = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC, | |
1357 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
1358 | pool, &lock_flags, &fsf_req); | |
1359 | if (ret < 0) { | |
1360 | ZFCP_LOG_INFO("error: Could not create CT request (FC-GS) for " | |
1361 | "adapter: %s\n", | |
1362 | zfcp_get_busid_by_adapter(adapter)); | |
1363 | goto failed_req; | |
1364 | } | |
1365 | ||
1366 | if (erp_action != NULL) { | |
1367 | erp_action->fsf_req = fsf_req; | |
1368 | fsf_req->erp_action = erp_action; | |
1369 | } | |
1370 | ||
1371 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
1372 | if (zfcp_use_one_sbal(ct->req, ct->req_count, | |
1373 | ct->resp, ct->resp_count)){ | |
1374 | /* both request buffer and response buffer | |
1375 | fit into one sbale each */ | |
1376 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ; | |
1377 | sbale[2].addr = zfcp_sg_to_address(&ct->req[0]); | |
1378 | sbale[2].length = ct->req[0].length; | |
1379 | sbale[3].addr = zfcp_sg_to_address(&ct->resp[0]); | |
1380 | sbale[3].length = ct->resp[0].length; | |
1381 | sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY; | |
aef4a983 | 1382 | } else if (adapter->adapter_features & |
1da177e4 LT |
1383 | FSF_FEATURE_ELS_CT_CHAINED_SBALS) { |
1384 | /* try to use chained SBALs */ | |
1385 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, | |
1386 | SBAL_FLAGS0_TYPE_WRITE_READ, | |
1387 | ct->req, ct->req_count, | |
1388 | ZFCP_MAX_SBALS_PER_CT_REQ); | |
1389 | if (bytes <= 0) { | |
1390 | ZFCP_LOG_INFO("error: creation of CT request failed " | |
1391 | "on adapter %s\n", | |
1392 | zfcp_get_busid_by_adapter(adapter)); | |
1393 | if (bytes == 0) | |
1394 | ret = -ENOMEM; | |
1395 | else | |
1396 | ret = bytes; | |
1397 | ||
1398 | goto failed_send; | |
1399 | } | |
1400 | fsf_req->qtcb->bottom.support.req_buf_length = bytes; | |
1401 | fsf_req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; | |
1402 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, | |
1403 | SBAL_FLAGS0_TYPE_WRITE_READ, | |
1404 | ct->resp, ct->resp_count, | |
1405 | ZFCP_MAX_SBALS_PER_CT_REQ); | |
1406 | if (bytes <= 0) { | |
1407 | ZFCP_LOG_INFO("error: creation of CT request failed " | |
1408 | "on adapter %s\n", | |
1409 | zfcp_get_busid_by_adapter(adapter)); | |
1410 | if (bytes == 0) | |
1411 | ret = -ENOMEM; | |
1412 | else | |
1413 | ret = bytes; | |
1414 | ||
1415 | goto failed_send; | |
1416 | } | |
1417 | fsf_req->qtcb->bottom.support.resp_buf_length = bytes; | |
1418 | } else { | |
1419 | /* reject send generic request */ | |
1420 | ZFCP_LOG_INFO( | |
1421 | "error: microcode does not support chained SBALs," | |
1422 | "CT request too big (adapter %s)\n", | |
1423 | zfcp_get_busid_by_adapter(adapter)); | |
1424 | ret = -EOPNOTSUPP; | |
1425 | goto failed_send; | |
1426 | } | |
1427 | ||
1428 | /* settings in QTCB */ | |
1429 | fsf_req->qtcb->header.port_handle = port->handle; | |
1430 | fsf_req->qtcb->bottom.support.service_class = adapter->fc_service_class; | |
1431 | fsf_req->qtcb->bottom.support.timeout = ct->timeout; | |
059c97d0 | 1432 | fsf_req->data = (unsigned long) ct; |
1da177e4 | 1433 | |
8a36e453 MS |
1434 | zfcp_san_dbf_event_ct_request(fsf_req); |
1435 | ||
1da177e4 LT |
1436 | /* start QDIO request for this FSF request */ |
1437 | ret = zfcp_fsf_req_send(fsf_req, ct->timer); | |
1438 | if (ret) { | |
1439 | ZFCP_LOG_DEBUG("error: initiation of CT request failed " | |
1440 | "(adapter %s, port 0x%016Lx)\n", | |
1441 | zfcp_get_busid_by_adapter(adapter), port->wwpn); | |
1442 | goto failed_send; | |
1443 | } | |
1444 | ||
1445 | ZFCP_LOG_DEBUG("CT request initiated (adapter %s, port 0x%016Lx)\n", | |
1446 | zfcp_get_busid_by_adapter(adapter), port->wwpn); | |
1447 | goto out; | |
1448 | ||
1449 | failed_send: | |
1450 | zfcp_fsf_req_free(fsf_req); | |
1451 | if (erp_action != NULL) { | |
1452 | erp_action->fsf_req = NULL; | |
1453 | } | |
1454 | failed_req: | |
1455 | out: | |
1456 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, | |
1457 | lock_flags); | |
1458 | return ret; | |
1459 | } | |
1460 | ||
1461 | /** | |
1462 | * zfcp_fsf_send_ct_handler - handler for Generic Service requests | |
1463 | * @fsf_req: pointer to struct zfcp_fsf_req | |
1464 | * | |
059c97d0 AH |
1465 | * Data specific for the Generic Service request is passed using |
1466 | * fsf_req->data. There we find the pointer to struct zfcp_send_ct. | |
1467 | * Usually a specific handler for the CT request is called which is | |
1468 | * found in this structure. | |
1da177e4 LT |
1469 | */ |
1470 | static int | |
1471 | zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *fsf_req) | |
1472 | { | |
1473 | struct zfcp_port *port; | |
1474 | struct zfcp_adapter *adapter; | |
1475 | struct zfcp_send_ct *send_ct; | |
1476 | struct fsf_qtcb_header *header; | |
1477 | struct fsf_qtcb_bottom_support *bottom; | |
1478 | int retval = -EINVAL; | |
1479 | u16 subtable, rule, counter; | |
1480 | ||
1481 | adapter = fsf_req->adapter; | |
059c97d0 | 1482 | send_ct = (struct zfcp_send_ct *) fsf_req->data; |
1da177e4 LT |
1483 | port = send_ct->port; |
1484 | header = &fsf_req->qtcb->header; | |
1485 | bottom = &fsf_req->qtcb->bottom.support; | |
1486 | ||
1487 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
1488 | goto skip_fsfstatus; | |
1489 | ||
1490 | /* evaluate FSF status in QTCB */ | |
1491 | switch (header->fsf_status) { | |
1492 | ||
1493 | case FSF_GOOD: | |
8a36e453 | 1494 | zfcp_san_dbf_event_ct_response(fsf_req); |
1da177e4 LT |
1495 | retval = 0; |
1496 | break; | |
1497 | ||
1498 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: | |
1da177e4 LT |
1499 | if (adapter->fc_service_class <= 3) { |
1500 | ZFCP_LOG_INFO("error: adapter %s does not support fc " | |
1501 | "class %d.\n", | |
1502 | zfcp_get_busid_by_port(port), | |
1503 | adapter->fc_service_class); | |
1504 | } else { | |
1505 | ZFCP_LOG_INFO("bug: The fibre channel class at the " | |
1506 | "adapter %s is invalid. " | |
1507 | "(debug info %d)\n", | |
1508 | zfcp_get_busid_by_port(port), | |
1509 | adapter->fc_service_class); | |
1510 | } | |
1511 | /* stop operation for this adapter */ | |
1512 | debug_text_exception(adapter->erp_dbf, 0, "fsf_s_class_nsup"); | |
1513 | zfcp_erp_adapter_shutdown(adapter, 0); | |
1514 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1515 | break; | |
1516 | ||
1517 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
1518 | switch (header->fsf_status_qual.word[0]){ |
1519 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
1520 | /* reopening link to port */ |
1521 | debug_text_event(adapter->erp_dbf, 1, "fsf_sq_ltest"); | |
1522 | zfcp_test_link(port); | |
1523 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1524 | break; | |
1525 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
1526 | /* ERP strategy will escalate */ |
1527 | debug_text_event(adapter->erp_dbf, 1, "fsf_sq_ulp"); | |
1528 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1529 | break; | |
1530 | default: | |
1531 | ZFCP_LOG_INFO("bug: Wrong status qualifier 0x%x " | |
1532 | "arrived.\n", | |
1533 | header->fsf_status_qual.word[0]); | |
1534 | break; | |
1535 | } | |
1536 | break; | |
1537 | ||
1538 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
1539 | ZFCP_LOG_NORMAL("access denied, cannot send generic service " |
1540 | "command (adapter %s, port d_id=0x%08x)\n", | |
1541 | zfcp_get_busid_by_port(port), port->d_id); | |
1542 | for (counter = 0; counter < 2; counter++) { | |
1543 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
1544 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
1545 | switch (subtable) { | |
1546 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
1547 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
1548 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
1549 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
1550 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
1551 | zfcp_act_subtable_type[subtable], rule); | |
1552 | break; | |
1553 | } | |
1554 | } | |
1555 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_access"); | |
1556 | zfcp_erp_port_access_denied(port); | |
1557 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1558 | break; | |
1559 | ||
1560 | case FSF_GENERIC_COMMAND_REJECTED: | |
1da177e4 LT |
1561 | ZFCP_LOG_INFO("generic service command rejected " |
1562 | "(adapter %s, port d_id=0x%08x)\n", | |
1563 | zfcp_get_busid_by_port(port), port->d_id); | |
1564 | ZFCP_LOG_INFO("status qualifier:\n"); | |
1565 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO, | |
1566 | (char *) &header->fsf_status_qual, | |
1567 | sizeof (union fsf_status_qual)); | |
1568 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_gcom_rej"); | |
1569 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1570 | break; | |
1571 | ||
1572 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
1573 | ZFCP_LOG_DEBUG("Temporary port identifier 0x%x for port " |
1574 | "0x%016Lx on adapter %s invalid. This may " | |
1575 | "happen occasionally.\n", port->handle, | |
1576 | port->wwpn, zfcp_get_busid_by_port(port)); | |
1577 | ZFCP_LOG_INFO("status qualifier:\n"); | |
1578 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO, | |
1579 | (char *) &header->fsf_status_qual, | |
1580 | sizeof (union fsf_status_qual)); | |
1581 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_phandle_nv"); | |
1582 | zfcp_erp_adapter_reopen(adapter, 0); | |
1583 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1584 | break; | |
1585 | ||
1586 | case FSF_PORT_BOXED: | |
1da177e4 LT |
1587 | ZFCP_LOG_INFO("port needs to be reopened " |
1588 | "(adapter %s, port d_id=0x%08x)\n", | |
1589 | zfcp_get_busid_by_port(port), port->d_id); | |
1590 | debug_text_event(adapter->erp_dbf, 2, "fsf_s_pboxed"); | |
d736a27b | 1591 | zfcp_erp_port_boxed(port); |
1da177e4 LT |
1592 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
1593 | | ZFCP_STATUS_FSFREQ_RETRY; | |
1594 | break; | |
1595 | ||
1596 | /* following states should never occure, all cases avoided | |
1597 | in zfcp_fsf_send_ct - but who knows ... */ | |
1598 | case FSF_PAYLOAD_SIZE_MISMATCH: | |
1da177e4 LT |
1599 | ZFCP_LOG_INFO("payload size mismatch (adapter: %s, " |
1600 | "req_buf_length=%d, resp_buf_length=%d)\n", | |
1601 | zfcp_get_busid_by_adapter(adapter), | |
1602 | bottom->req_buf_length, bottom->resp_buf_length); | |
1603 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1604 | break; | |
1605 | case FSF_REQUEST_SIZE_TOO_LARGE: | |
1da177e4 LT |
1606 | ZFCP_LOG_INFO("request size too large (adapter: %s, " |
1607 | "req_buf_length=%d)\n", | |
1608 | zfcp_get_busid_by_adapter(adapter), | |
1609 | bottom->req_buf_length); | |
1610 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1611 | break; | |
1612 | case FSF_RESPONSE_SIZE_TOO_LARGE: | |
1da177e4 LT |
1613 | ZFCP_LOG_INFO("response size too large (adapter: %s, " |
1614 | "resp_buf_length=%d)\n", | |
1615 | zfcp_get_busid_by_adapter(adapter), | |
1616 | bottom->resp_buf_length); | |
1617 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1618 | break; | |
1619 | case FSF_SBAL_MISMATCH: | |
1da177e4 LT |
1620 | ZFCP_LOG_INFO("SBAL mismatch (adapter: %s, req_buf_length=%d, " |
1621 | "resp_buf_length=%d)\n", | |
1622 | zfcp_get_busid_by_adapter(adapter), | |
1623 | bottom->req_buf_length, bottom->resp_buf_length); | |
1624 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1625 | break; | |
1626 | ||
1627 | default: | |
1628 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
1629 | "(debug info 0x%x)\n", header->fsf_status); | |
1630 | debug_text_event(adapter->erp_dbf, 0, "fsf_sq_inval:"); | |
1631 | debug_exception(adapter->erp_dbf, 0, | |
1632 | &header->fsf_status_qual.word[0], sizeof (u32)); | |
1633 | break; | |
1634 | } | |
1635 | ||
1636 | skip_fsfstatus: | |
1637 | send_ct->status = retval; | |
1638 | ||
1639 | if (send_ct->handler != NULL) | |
1640 | send_ct->handler(send_ct->handler_data); | |
1641 | ||
1642 | return retval; | |
1643 | } | |
1644 | ||
1645 | /** | |
1646 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) | |
1647 | * @els: pointer to struct zfcp_send_els which contains all needed data for | |
1648 | * the command. | |
1649 | */ | |
1650 | int | |
1651 | zfcp_fsf_send_els(struct zfcp_send_els *els) | |
1652 | { | |
1653 | volatile struct qdio_buffer_element *sbale; | |
1654 | struct zfcp_fsf_req *fsf_req; | |
13e1e1f0 | 1655 | u32 d_id; |
1da177e4 LT |
1656 | struct zfcp_adapter *adapter; |
1657 | unsigned long lock_flags; | |
1658 | int bytes; | |
1659 | int ret = 0; | |
1660 | ||
1661 | d_id = els->d_id; | |
1662 | adapter = els->adapter; | |
1663 | ||
1664 | ret = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS, | |
1665 | ZFCP_REQ_AUTO_CLEANUP, | |
1666 | NULL, &lock_flags, &fsf_req); | |
1667 | if (ret < 0) { | |
1668 | ZFCP_LOG_INFO("error: creation of ELS request failed " | |
1669 | "(adapter %s, port d_id: 0x%08x)\n", | |
1670 | zfcp_get_busid_by_adapter(adapter), d_id); | |
1671 | goto failed_req; | |
1672 | } | |
1673 | ||
1674 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
1675 | if (zfcp_use_one_sbal(els->req, els->req_count, | |
1676 | els->resp, els->resp_count)){ | |
1677 | /* both request buffer and response buffer | |
1678 | fit into one sbale each */ | |
1679 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ; | |
1680 | sbale[2].addr = zfcp_sg_to_address(&els->req[0]); | |
1681 | sbale[2].length = els->req[0].length; | |
1682 | sbale[3].addr = zfcp_sg_to_address(&els->resp[0]); | |
1683 | sbale[3].length = els->resp[0].length; | |
1684 | sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY; | |
aef4a983 | 1685 | } else if (adapter->adapter_features & |
1da177e4 LT |
1686 | FSF_FEATURE_ELS_CT_CHAINED_SBALS) { |
1687 | /* try to use chained SBALs */ | |
1688 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, | |
1689 | SBAL_FLAGS0_TYPE_WRITE_READ, | |
1690 | els->req, els->req_count, | |
1691 | ZFCP_MAX_SBALS_PER_ELS_REQ); | |
1692 | if (bytes <= 0) { | |
1693 | ZFCP_LOG_INFO("error: creation of ELS request failed " | |
1694 | "(adapter %s, port d_id: 0x%08x)\n", | |
1695 | zfcp_get_busid_by_adapter(adapter), d_id); | |
1696 | if (bytes == 0) { | |
1697 | ret = -ENOMEM; | |
1698 | } else { | |
1699 | ret = bytes; | |
1700 | } | |
1701 | goto failed_send; | |
1702 | } | |
1703 | fsf_req->qtcb->bottom.support.req_buf_length = bytes; | |
1704 | fsf_req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; | |
1705 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, | |
1706 | SBAL_FLAGS0_TYPE_WRITE_READ, | |
1707 | els->resp, els->resp_count, | |
1708 | ZFCP_MAX_SBALS_PER_ELS_REQ); | |
1709 | if (bytes <= 0) { | |
1710 | ZFCP_LOG_INFO("error: creation of ELS request failed " | |
1711 | "(adapter %s, port d_id: 0x%08x)\n", | |
1712 | zfcp_get_busid_by_adapter(adapter), d_id); | |
1713 | if (bytes == 0) { | |
1714 | ret = -ENOMEM; | |
1715 | } else { | |
1716 | ret = bytes; | |
1717 | } | |
1718 | goto failed_send; | |
1719 | } | |
1720 | fsf_req->qtcb->bottom.support.resp_buf_length = bytes; | |
1721 | } else { | |
1722 | /* reject request */ | |
1723 | ZFCP_LOG_INFO("error: microcode does not support chained SBALs" | |
1724 | ", ELS request too big (adapter %s, " | |
1725 | "port d_id: 0x%08x)\n", | |
1726 | zfcp_get_busid_by_adapter(adapter), d_id); | |
1727 | ret = -EOPNOTSUPP; | |
1728 | goto failed_send; | |
1729 | } | |
1730 | ||
1731 | /* settings in QTCB */ | |
1732 | fsf_req->qtcb->bottom.support.d_id = d_id; | |
1733 | fsf_req->qtcb->bottom.support.service_class = adapter->fc_service_class; | |
1734 | fsf_req->qtcb->bottom.support.timeout = ZFCP_ELS_TIMEOUT; | |
059c97d0 | 1735 | fsf_req->data = (unsigned long) els; |
1da177e4 LT |
1736 | |
1737 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
1738 | ||
8a36e453 MS |
1739 | zfcp_san_dbf_event_els_request(fsf_req); |
1740 | ||
1da177e4 LT |
1741 | /* start QDIO request for this FSF request */ |
1742 | ret = zfcp_fsf_req_send(fsf_req, els->timer); | |
1743 | if (ret) { | |
1744 | ZFCP_LOG_DEBUG("error: initiation of ELS request failed " | |
1745 | "(adapter %s, port d_id: 0x%08x)\n", | |
1746 | zfcp_get_busid_by_adapter(adapter), d_id); | |
1747 | goto failed_send; | |
1748 | } | |
1749 | ||
1750 | ZFCP_LOG_DEBUG("ELS request initiated (adapter %s, port d_id: " | |
1751 | "0x%08x)\n", zfcp_get_busid_by_adapter(adapter), d_id); | |
1752 | goto out; | |
1753 | ||
1754 | failed_send: | |
1755 | zfcp_fsf_req_free(fsf_req); | |
1756 | ||
1757 | failed_req: | |
1758 | out: | |
1759 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, | |
1760 | lock_flags); | |
1761 | ||
1762 | return ret; | |
1763 | } | |
1764 | ||
1765 | /** | |
1766 | * zfcp_fsf_send_els_handler - handler for ELS commands | |
1767 | * @fsf_req: pointer to struct zfcp_fsf_req | |
1768 | * | |
059c97d0 AH |
1769 | * Data specific for the ELS command is passed using |
1770 | * fsf_req->data. There we find the pointer to struct zfcp_send_els. | |
1771 | * Usually a specific handler for the ELS command is called which is | |
1772 | * found in this structure. | |
1da177e4 LT |
1773 | */ |
1774 | static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *fsf_req) | |
1775 | { | |
1776 | struct zfcp_adapter *adapter; | |
1da177e4 | 1777 | struct zfcp_port *port; |
13e1e1f0 | 1778 | u32 d_id; |
1da177e4 LT |
1779 | struct fsf_qtcb_header *header; |
1780 | struct fsf_qtcb_bottom_support *bottom; | |
1781 | struct zfcp_send_els *send_els; | |
1782 | int retval = -EINVAL; | |
1783 | u16 subtable, rule, counter; | |
1784 | ||
059c97d0 | 1785 | send_els = (struct zfcp_send_els *) fsf_req->data; |
1da177e4 | 1786 | adapter = send_els->adapter; |
64b29a13 | 1787 | port = send_els->port; |
1da177e4 LT |
1788 | d_id = send_els->d_id; |
1789 | header = &fsf_req->qtcb->header; | |
1790 | bottom = &fsf_req->qtcb->bottom.support; | |
1791 | ||
1792 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
1793 | goto skip_fsfstatus; | |
1794 | ||
1795 | switch (header->fsf_status) { | |
1796 | ||
1797 | case FSF_GOOD: | |
8a36e453 | 1798 | zfcp_san_dbf_event_els_response(fsf_req); |
1da177e4 LT |
1799 | retval = 0; |
1800 | break; | |
1801 | ||
1802 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: | |
1da177e4 LT |
1803 | if (adapter->fc_service_class <= 3) { |
1804 | ZFCP_LOG_INFO("error: adapter %s does " | |
1805 | "not support fibrechannel class %d.\n", | |
1806 | zfcp_get_busid_by_adapter(adapter), | |
1807 | adapter->fc_service_class); | |
1808 | } else { | |
1809 | ZFCP_LOG_INFO("bug: The fibrechannel class at " | |
1810 | "adapter %s is invalid. " | |
1811 | "(debug info %d)\n", | |
1812 | zfcp_get_busid_by_adapter(adapter), | |
1813 | adapter->fc_service_class); | |
1814 | } | |
1815 | /* stop operation for this adapter */ | |
1816 | debug_text_exception(adapter->erp_dbf, 0, "fsf_s_class_nsup"); | |
1817 | zfcp_erp_adapter_shutdown(adapter, 0); | |
1818 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1819 | break; | |
1820 | ||
1821 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
1822 | switch (header->fsf_status_qual.word[0]){ |
1823 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1824 | debug_text_event(adapter->erp_dbf, 1, "fsf_sq_ltest"); |
64b29a13 AH |
1825 | if (port && (send_els->ls_code != ZFCP_LS_ADISC)) |
1826 | zfcp_test_link(port); | |
1da177e4 LT |
1827 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1828 | break; | |
1829 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
1830 | debug_text_event(adapter->erp_dbf, 1, "fsf_sq_ulp"); |
1831 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1832 | retval = | |
1833 | zfcp_handle_els_rjt(header->fsf_status_qual.word[1], | |
1834 | (struct zfcp_ls_rjt_par *) | |
1835 | &header->fsf_status_qual.word[2]); | |
1836 | break; | |
1837 | case FSF_SQ_RETRY_IF_POSSIBLE: | |
1da177e4 LT |
1838 | debug_text_event(adapter->erp_dbf, 1, "fsf_sq_retry"); |
1839 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1840 | break; | |
1841 | default: | |
1842 | ZFCP_LOG_INFO("bug: Wrong status qualifier 0x%x\n", | |
1843 | header->fsf_status_qual.word[0]); | |
1844 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO, | |
1845 | (char*)header->fsf_status_qual.word, 16); | |
1846 | } | |
1847 | break; | |
1848 | ||
1849 | case FSF_ELS_COMMAND_REJECTED: | |
1da177e4 LT |
1850 | ZFCP_LOG_INFO("ELS has been rejected because command filter " |
1851 | "prohibited sending " | |
1852 | "(adapter: %s, port d_id: 0x%08x)\n", | |
1853 | zfcp_get_busid_by_adapter(adapter), d_id); | |
1854 | ||
1855 | break; | |
1856 | ||
1857 | case FSF_PAYLOAD_SIZE_MISMATCH: | |
1da177e4 LT |
1858 | ZFCP_LOG_INFO( |
1859 | "ELS request size and ELS response size must be either " | |
1860 | "both 0, or both greater than 0 " | |
1861 | "(adapter: %s, req_buf_length=%d resp_buf_length=%d)\n", | |
1862 | zfcp_get_busid_by_adapter(adapter), | |
1863 | bottom->req_buf_length, | |
1864 | bottom->resp_buf_length); | |
1865 | break; | |
1866 | ||
1867 | case FSF_REQUEST_SIZE_TOO_LARGE: | |
1da177e4 LT |
1868 | ZFCP_LOG_INFO( |
1869 | "Length of the ELS request buffer, " | |
1870 | "specified in QTCB bottom, " | |
1871 | "exceeds the size of the buffers " | |
1872 | "that have been allocated for ELS request data " | |
1873 | "(adapter: %s, req_buf_length=%d)\n", | |
1874 | zfcp_get_busid_by_adapter(adapter), | |
1875 | bottom->req_buf_length); | |
1876 | break; | |
1877 | ||
1878 | case FSF_RESPONSE_SIZE_TOO_LARGE: | |
1da177e4 LT |
1879 | ZFCP_LOG_INFO( |
1880 | "Length of the ELS response buffer, " | |
1881 | "specified in QTCB bottom, " | |
1882 | "exceeds the size of the buffers " | |
1883 | "that have been allocated for ELS response data " | |
1884 | "(adapter: %s, resp_buf_length=%d)\n", | |
1885 | zfcp_get_busid_by_adapter(adapter), | |
1886 | bottom->resp_buf_length); | |
1887 | break; | |
1888 | ||
1889 | case FSF_SBAL_MISMATCH: | |
1890 | /* should never occure, avoided in zfcp_fsf_send_els */ | |
1da177e4 LT |
1891 | ZFCP_LOG_INFO("SBAL mismatch (adapter: %s, req_buf_length=%d, " |
1892 | "resp_buf_length=%d)\n", | |
1893 | zfcp_get_busid_by_adapter(adapter), | |
1894 | bottom->req_buf_length, bottom->resp_buf_length); | |
1895 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1896 | break; | |
1897 | ||
1898 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
1899 | ZFCP_LOG_NORMAL("access denied, cannot send ELS command " |
1900 | "(adapter %s, port d_id=0x%08x)\n", | |
1901 | zfcp_get_busid_by_adapter(adapter), d_id); | |
1902 | for (counter = 0; counter < 2; counter++) { | |
1903 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
1904 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
1905 | switch (subtable) { | |
1906 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
1907 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
1908 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
1909 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
1910 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
1911 | zfcp_act_subtable_type[subtable], rule); | |
1912 | break; | |
1913 | } | |
1914 | } | |
1915 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_access"); | |
1da177e4 LT |
1916 | if (port != NULL) |
1917 | zfcp_erp_port_access_denied(port); | |
1da177e4 LT |
1918 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1919 | break; | |
1920 | ||
1921 | default: | |
1922 | ZFCP_LOG_NORMAL( | |
1923 | "bug: An unknown FSF Status was presented " | |
1924 | "(adapter: %s, fsf_status=0x%08x)\n", | |
1925 | zfcp_get_busid_by_adapter(adapter), | |
1926 | header->fsf_status); | |
1927 | debug_text_event(adapter->erp_dbf, 0, "fsf_sq_inval"); | |
1928 | debug_exception(adapter->erp_dbf, 0, | |
1929 | &header->fsf_status_qual.word[0], sizeof(u32)); | |
1930 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1931 | break; | |
1932 | } | |
1933 | ||
1934 | skip_fsfstatus: | |
1935 | send_els->status = retval; | |
1936 | ||
1937 | if (send_els->handler != 0) | |
1938 | send_els->handler(send_els->handler_data); | |
1939 | ||
1940 | return retval; | |
1941 | } | |
1942 | ||
1943 | /* | |
1944 | * function: | |
1945 | * | |
1946 | * purpose: | |
1947 | * | |
1948 | * returns: address of initiated FSF request | |
1949 | * NULL - request could not be initiated | |
1950 | */ | |
1951 | int | |
1952 | zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) | |
1953 | { | |
1954 | volatile struct qdio_buffer_element *sbale; | |
1955 | unsigned long lock_flags; | |
1956 | int retval = 0; | |
1957 | ||
1958 | /* setup new FSF request */ | |
1959 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
1960 | FSF_QTCB_EXCHANGE_CONFIG_DATA, | |
1961 | ZFCP_REQ_AUTO_CLEANUP, | |
1962 | erp_action->adapter->pool.fsf_req_erp, | |
1963 | &lock_flags, &(erp_action->fsf_req)); | |
1964 | if (retval < 0) { | |
1965 | ZFCP_LOG_INFO("error: Could not create exchange configuration " | |
1966 | "data request for adapter %s.\n", | |
1967 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
1968 | goto out; | |
1969 | } | |
1970 | ||
1971 | sbale = zfcp_qdio_sbale_req(erp_action->fsf_req, | |
1972 | erp_action->fsf_req->sbal_curr, 0); | |
1973 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1974 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1975 | ||
1976 | erp_action->fsf_req->erp_action = erp_action; | |
1977 | erp_action->fsf_req->qtcb->bottom.config.feature_selection = | |
aef4a983 MS |
1978 | FSF_FEATURE_CFDC | |
1979 | FSF_FEATURE_LUN_SHARING | | |
9eb69aff | 1980 | FSF_FEATURE_NOTIFICATION_LOST | |
aef4a983 | 1981 | FSF_FEATURE_UPDATE_ALERT; |
1da177e4 LT |
1982 | |
1983 | /* start QDIO request for this FSF request */ | |
1984 | retval = zfcp_fsf_req_send(erp_action->fsf_req, &erp_action->timer); | |
1985 | if (retval) { | |
1986 | ZFCP_LOG_INFO | |
1987 | ("error: Could not send exchange configuration data " | |
1988 | "command on the adapter %s\n", | |
1989 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
1990 | zfcp_fsf_req_free(erp_action->fsf_req); | |
1991 | erp_action->fsf_req = NULL; | |
1992 | goto out; | |
1993 | } | |
1994 | ||
1995 | ZFCP_LOG_DEBUG("exchange configuration data request initiated " | |
1996 | "(adapter %s)\n", | |
1997 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
1998 | ||
1999 | out: | |
2000 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
2001 | lock_flags); | |
2002 | return retval; | |
2003 | } | |
2004 | ||
2005 | /** | |
2006 | * zfcp_fsf_exchange_config_evaluate | |
2007 | * @fsf_req: fsf_req which belongs to xchg config data request | |
2008 | * @xchg_ok: specifies if xchg config data was incomplete or complete (0/1) | |
2009 | * | |
2010 | * returns: -EIO on error, 0 otherwise | |
2011 | */ | |
2012 | static int | |
2013 | zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *fsf_req, int xchg_ok) | |
2014 | { | |
2015 | struct fsf_qtcb_bottom_config *bottom; | |
2016 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
13e1e1f0 | 2017 | struct Scsi_Host *shost = adapter->scsi_host; |
1da177e4 LT |
2018 | |
2019 | bottom = &fsf_req->qtcb->bottom.config; | |
2020 | ZFCP_LOG_DEBUG("low/high QTCB version 0x%x/0x%x of FSF\n", | |
2021 | bottom->low_qtcb_version, bottom->high_qtcb_version); | |
2022 | adapter->fsf_lic_version = bottom->lic_version; | |
aef4a983 MS |
2023 | adapter->adapter_features = bottom->adapter_features; |
2024 | adapter->connection_features = bottom->connection_features; | |
6f71d9bc | 2025 | adapter->peer_wwpn = 0; |
2026 | adapter->peer_wwnn = 0; | |
2027 | adapter->peer_d_id = 0; | |
1da177e4 LT |
2028 | |
2029 | if (xchg_ok) { | |
13e1e1f0 AH |
2030 | fc_host_node_name(shost) = bottom->nport_serv_param.wwnn; |
2031 | fc_host_port_name(shost) = bottom->nport_serv_param.wwpn; | |
2032 | fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK; | |
2033 | fc_host_speed(shost) = bottom->fc_link_speed; | |
2034 | fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3; | |
1da177e4 | 2035 | adapter->hydra_version = bottom->adapter_type; |
ad757cdf AH |
2036 | if (fc_host_permanent_port_name(shost) == -1) |
2037 | fc_host_permanent_port_name(shost) = | |
2038 | fc_host_port_name(shost); | |
2039 | if (bottom->fc_topology == FSF_TOPO_P2P) { | |
2040 | adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK; | |
2041 | adapter->peer_wwpn = bottom->plogi_payload.wwpn; | |
2042 | adapter->peer_wwnn = bottom->plogi_payload.wwnn; | |
2043 | fc_host_port_type(shost) = FC_PORTTYPE_PTP; | |
2044 | } else if (bottom->fc_topology == FSF_TOPO_FABRIC) | |
2045 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
2046 | else if (bottom->fc_topology == FSF_TOPO_AL) | |
2047 | fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; | |
2048 | else | |
2049 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; | |
1da177e4 | 2050 | } else { |
13e1e1f0 AH |
2051 | fc_host_node_name(shost) = 0; |
2052 | fc_host_port_name(shost) = 0; | |
2053 | fc_host_port_id(shost) = 0; | |
2054 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; | |
ad757cdf | 2055 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; |
1da177e4 LT |
2056 | adapter->hydra_version = 0; |
2057 | } | |
2058 | ||
aef4a983 | 2059 | if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) { |
1da177e4 | 2060 | adapter->hardware_version = bottom->hardware_version; |
13e1e1f0 AH |
2061 | memcpy(fc_host_serial_number(shost), bottom->serial_number, |
2062 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
2063 | EBCASC(fc_host_serial_number(shost), | |
2064 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
1da177e4 LT |
2065 | } |
2066 | ||
6f71d9bc | 2067 | ZFCP_LOG_NORMAL("The adapter %s reported the following characteristics:\n" |
13e1e1f0 AH |
2068 | "WWNN 0x%016Lx, " |
2069 | "WWPN 0x%016Lx, " | |
2070 | "S_ID 0x%08x,\n" | |
2071 | "adapter version 0x%x, " | |
2072 | "LIC version 0x%x, " | |
2073 | "FC link speed %d Gb/s\n", | |
2074 | zfcp_get_busid_by_adapter(adapter), | |
2075 | (wwn_t) fc_host_node_name(shost), | |
2076 | (wwn_t) fc_host_port_name(shost), | |
2077 | fc_host_port_id(shost), | |
2078 | adapter->hydra_version, | |
2079 | adapter->fsf_lic_version, | |
2080 | fc_host_speed(shost)); | |
1da177e4 LT |
2081 | if (ZFCP_QTCB_VERSION < bottom->low_qtcb_version) { |
2082 | ZFCP_LOG_NORMAL("error: the adapter %s " | |
2083 | "only supports newer control block " | |
2084 | "versions in comparison to this device " | |
2085 | "driver (try updated device driver)\n", | |
2086 | zfcp_get_busid_by_adapter(adapter)); | |
2087 | debug_text_event(adapter->erp_dbf, 0, "low_qtcb_ver"); | |
2088 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2089 | return -EIO; | |
2090 | } | |
2091 | if (ZFCP_QTCB_VERSION > bottom->high_qtcb_version) { | |
2092 | ZFCP_LOG_NORMAL("error: the adapter %s " | |
2093 | "only supports older control block " | |
2094 | "versions than this device driver uses" | |
2095 | "(consider a microcode upgrade)\n", | |
2096 | zfcp_get_busid_by_adapter(adapter)); | |
2097 | debug_text_event(adapter->erp_dbf, 0, "high_qtcb_ver"); | |
2098 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2099 | return -EIO; | |
2100 | } | |
2101 | return 0; | |
2102 | } | |
2103 | ||
2104 | /* | |
2105 | * function: zfcp_fsf_exchange_config_data_handler | |
2106 | * | |
2107 | * purpose: is called for finished Exchange Configuration Data command | |
2108 | * | |
2109 | * returns: | |
2110 | */ | |
2111 | static int | |
2112 | zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *fsf_req) | |
2113 | { | |
2114 | struct fsf_qtcb_bottom_config *bottom; | |
2115 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
aef4a983 | 2116 | struct fsf_qtcb *qtcb = fsf_req->qtcb; |
1da177e4 LT |
2117 | |
2118 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
2119 | return -EIO; | |
2120 | ||
aef4a983 | 2121 | switch (qtcb->header.fsf_status) { |
1da177e4 LT |
2122 | |
2123 | case FSF_GOOD: | |
1da177e4 LT |
2124 | if (zfcp_fsf_exchange_config_evaluate(fsf_req, 1)) |
2125 | return -EIO; | |
2126 | ||
ad757cdf AH |
2127 | switch (fc_host_port_type(adapter->scsi_host)) { |
2128 | case FC_PORTTYPE_PTP: | |
6f71d9bc | 2129 | ZFCP_LOG_NORMAL("Point-to-Point fibrechannel " |
2130 | "configuration detected at adapter %s\n" | |
2131 | "Peer WWNN 0x%016llx, " | |
2132 | "peer WWPN 0x%016llx, " | |
2133 | "peer d_id 0x%06x\n", | |
2134 | zfcp_get_busid_by_adapter(adapter), | |
2135 | adapter->peer_wwnn, | |
2136 | adapter->peer_wwpn, | |
2137 | adapter->peer_d_id); | |
1da177e4 LT |
2138 | debug_text_event(fsf_req->adapter->erp_dbf, 0, |
2139 | "top-p-to-p"); | |
6f71d9bc | 2140 | break; |
ad757cdf | 2141 | case FC_PORTTYPE_NLPORT: |
1da177e4 LT |
2142 | ZFCP_LOG_NORMAL("error: Arbitrated loop fibrechannel " |
2143 | "topology detected at adapter %s " | |
2144 | "unsupported, shutting down adapter\n", | |
2145 | zfcp_get_busid_by_adapter(adapter)); | |
2146 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
2147 | "top-al"); | |
2148 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2149 | return -EIO; | |
ad757cdf | 2150 | case FC_PORTTYPE_NPORT: |
aef4a983 | 2151 | ZFCP_LOG_NORMAL("Switched fabric fibrechannel " |
1da177e4 LT |
2152 | "network detected at adapter %s.\n", |
2153 | zfcp_get_busid_by_adapter(adapter)); | |
2154 | break; | |
2155 | default: | |
2156 | ZFCP_LOG_NORMAL("bug: The fibrechannel topology " | |
2157 | "reported by the exchange " | |
2158 | "configuration command for " | |
2159 | "the adapter %s is not " | |
2160 | "of a type known to the zfcp " | |
2161 | "driver, shutting down adapter\n", | |
2162 | zfcp_get_busid_by_adapter(adapter)); | |
2163 | debug_text_exception(fsf_req->adapter->erp_dbf, 0, | |
2164 | "unknown-topo"); | |
2165 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2166 | return -EIO; | |
2167 | } | |
aef4a983 | 2168 | bottom = &qtcb->bottom.config; |
1da177e4 LT |
2169 | if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { |
2170 | ZFCP_LOG_NORMAL("bug: Maximum QTCB size (%d bytes) " | |
2171 | "allowed by the adapter %s " | |
2172 | "is lower than the minimum " | |
2173 | "required by the driver (%ld bytes).\n", | |
2174 | bottom->max_qtcb_size, | |
2175 | zfcp_get_busid_by_adapter(adapter), | |
2176 | sizeof(struct fsf_qtcb)); | |
2177 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
2178 | "qtcb-size"); | |
2179 | debug_event(fsf_req->adapter->erp_dbf, 0, | |
2180 | &bottom->max_qtcb_size, sizeof (u32)); | |
2181 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2182 | return -EIO; | |
2183 | } | |
2184 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, | |
2185 | &adapter->status); | |
2186 | break; | |
2187 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: | |
2188 | debug_text_event(adapter->erp_dbf, 0, "xchg-inco"); | |
2189 | ||
2190 | if (zfcp_fsf_exchange_config_evaluate(fsf_req, 0)) | |
2191 | return -EIO; | |
2192 | ||
aef4a983 MS |
2193 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, &adapter->status); |
2194 | ||
2195 | zfcp_fsf_link_down_info_eval(adapter, | |
2196 | &qtcb->header.fsf_status_qual.link_down_info); | |
1da177e4 LT |
2197 | break; |
2198 | default: | |
2199 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf-stat-ng"); | |
2200 | debug_event(fsf_req->adapter->erp_dbf, 0, | |
2201 | &fsf_req->qtcb->header.fsf_status, sizeof (u32)); | |
2202 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2203 | return -EIO; | |
2204 | } | |
2205 | return 0; | |
2206 | } | |
2207 | ||
2208 | /** | |
2209 | * zfcp_fsf_exchange_port_data - request information about local port | |
aef4a983 | 2210 | * @erp_action: ERP action for the adapter for which port data is requested |
1da177e4 LT |
2211 | * @adapter: for which port data is requested |
2212 | * @data: response to exchange port data request | |
2213 | */ | |
2214 | int | |
aef4a983 MS |
2215 | zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action, |
2216 | struct zfcp_adapter *adapter, | |
1da177e4 LT |
2217 | struct fsf_qtcb_bottom_port *data) |
2218 | { | |
2219 | volatile struct qdio_buffer_element *sbale; | |
2220 | int retval = 0; | |
2221 | unsigned long lock_flags; | |
2222 | struct zfcp_fsf_req *fsf_req; | |
2223 | struct timer_list *timer; | |
2224 | ||
aef4a983 | 2225 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) { |
1da177e4 LT |
2226 | ZFCP_LOG_INFO("error: exchange port data " |
2227 | "command not supported by adapter %s\n", | |
2228 | zfcp_get_busid_by_adapter(adapter)); | |
2229 | return -EOPNOTSUPP; | |
2230 | } | |
2231 | ||
1da177e4 LT |
2232 | /* setup new FSF request */ |
2233 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, | |
2448c459 AH |
2234 | erp_action ? ZFCP_REQ_AUTO_CLEANUP : 0, |
2235 | 0, &lock_flags, &fsf_req); | |
1da177e4 LT |
2236 | if (retval < 0) { |
2237 | ZFCP_LOG_INFO("error: Out of resources. Could not create an " | |
2238 | "exchange port data request for" | |
2239 | "the adapter %s.\n", | |
2240 | zfcp_get_busid_by_adapter(adapter)); | |
2241 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, | |
2242 | lock_flags); | |
2448c459 | 2243 | return retval; |
aef4a983 MS |
2244 | } |
2245 | ||
2246 | if (data) | |
2448c459 | 2247 | fsf_req->data = (unsigned long) data; |
059c97d0 | 2248 | |
1da177e4 LT |
2249 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
2250 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
2251 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2252 | ||
2448c459 AH |
2253 | if (erp_action) { |
2254 | erp_action->fsf_req = fsf_req; | |
2255 | fsf_req->erp_action = erp_action; | |
2256 | timer = &erp_action->timer; | |
2257 | } else { | |
2258 | timer = kmalloc(sizeof(struct timer_list), GFP_ATOMIC); | |
2259 | if (!timer) { | |
2260 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, | |
2261 | lock_flags); | |
2262 | zfcp_fsf_req_free(fsf_req); | |
2263 | return -ENOMEM; | |
2264 | } | |
2265 | init_timer(timer); | |
2266 | timer->function = zfcp_fsf_request_timeout_handler; | |
2267 | timer->data = (unsigned long) adapter; | |
2268 | timer->expires = ZFCP_FSF_REQUEST_TIMEOUT; | |
2269 | } | |
1da177e4 LT |
2270 | |
2271 | retval = zfcp_fsf_req_send(fsf_req, timer); | |
2272 | if (retval) { | |
2273 | ZFCP_LOG_INFO("error: Could not send an exchange port data " | |
2274 | "command on the adapter %s\n", | |
2275 | zfcp_get_busid_by_adapter(adapter)); | |
2276 | zfcp_fsf_req_free(fsf_req); | |
aef4a983 MS |
2277 | if (erp_action) |
2278 | erp_action->fsf_req = NULL; | |
2448c459 AH |
2279 | else |
2280 | kfree(timer); | |
1da177e4 LT |
2281 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, |
2282 | lock_flags); | |
2448c459 | 2283 | return retval; |
1da177e4 LT |
2284 | } |
2285 | ||
2448c459 | 2286 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); |
1da177e4 | 2287 | |
2448c459 AH |
2288 | if (!erp_action) { |
2289 | wait_event(fsf_req->completion_wq, | |
2290 | fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
2291 | del_timer_sync(timer); | |
2292 | zfcp_fsf_req_free(fsf_req); | |
2293 | kfree(timer); | |
2294 | } | |
1da177e4 LT |
2295 | return retval; |
2296 | } | |
2297 | ||
2f8f3ed5 AH |
2298 | /** |
2299 | * zfcp_fsf_exchange_port_evaluate | |
2300 | * @fsf_req: fsf_req which belongs to xchg port data request | |
2301 | * @xchg_ok: specifies if xchg port data was incomplete or complete (0/1) | |
2302 | */ | |
2303 | static void | |
2304 | zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *fsf_req, int xchg_ok) | |
2305 | { | |
2306 | struct zfcp_adapter *adapter; | |
2307 | struct fsf_qtcb *qtcb; | |
2308 | struct fsf_qtcb_bottom_port *bottom, *data; | |
2309 | struct Scsi_Host *shost; | |
2310 | ||
2311 | adapter = fsf_req->adapter; | |
2312 | qtcb = fsf_req->qtcb; | |
2313 | bottom = &qtcb->bottom.port; | |
2314 | shost = adapter->scsi_host; | |
2315 | ||
2316 | data = (struct fsf_qtcb_bottom_port*) fsf_req->data; | |
2317 | if (data) | |
2318 | memcpy(data, bottom, sizeof(struct fsf_qtcb_bottom_port)); | |
2319 | ||
2320 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) | |
2321 | fc_host_permanent_port_name(shost) = bottom->wwpn; | |
2322 | else | |
2323 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
2324 | fc_host_maxframe_size(shost) = bottom->maximum_frame_size; | |
2325 | fc_host_supported_speeds(shost) = bottom->supported_speed; | |
2326 | } | |
1da177e4 LT |
2327 | |
2328 | /** | |
2329 | * zfcp_fsf_exchange_port_data_handler - handler for exchange_port_data request | |
2330 | * @fsf_req: pointer to struct zfcp_fsf_req | |
2331 | */ | |
2332 | static void | |
2333 | zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *fsf_req) | |
2334 | { | |
2f8f3ed5 AH |
2335 | struct zfcp_adapter *adapter; |
2336 | struct fsf_qtcb *qtcb; | |
2337 | ||
2338 | adapter = fsf_req->adapter; | |
2339 | qtcb = fsf_req->qtcb; | |
1da177e4 LT |
2340 | |
2341 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
2342 | return; | |
2343 | ||
aef4a983 | 2344 | switch (qtcb->header.fsf_status) { |
1da177e4 | 2345 | case FSF_GOOD: |
2f8f3ed5 | 2346 | zfcp_fsf_exchange_port_evaluate(fsf_req, 1); |
aef4a983 | 2347 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status); |
aef4a983 | 2348 | break; |
aef4a983 | 2349 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
2f8f3ed5 | 2350 | zfcp_fsf_exchange_port_evaluate(fsf_req, 0); |
aef4a983 | 2351 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status); |
aef4a983 MS |
2352 | zfcp_fsf_link_down_info_eval(adapter, |
2353 | &qtcb->header.fsf_status_qual.link_down_info); | |
1da177e4 | 2354 | break; |
1da177e4 | 2355 | default: |
aef4a983 MS |
2356 | debug_text_event(adapter->erp_dbf, 0, "xchg-port-ng"); |
2357 | debug_event(adapter->erp_dbf, 0, | |
1da177e4 LT |
2358 | &fsf_req->qtcb->header.fsf_status, sizeof(u32)); |
2359 | } | |
2360 | } | |
2361 | ||
2362 | ||
2363 | /* | |
2364 | * function: zfcp_fsf_open_port | |
2365 | * | |
2366 | * purpose: | |
2367 | * | |
2368 | * returns: address of initiated FSF request | |
2369 | * NULL - request could not be initiated | |
2370 | */ | |
2371 | int | |
2372 | zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) | |
2373 | { | |
2374 | volatile struct qdio_buffer_element *sbale; | |
2375 | unsigned long lock_flags; | |
2376 | int retval = 0; | |
2377 | ||
2378 | /* setup new FSF request */ | |
2379 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
2380 | FSF_QTCB_OPEN_PORT_WITH_DID, | |
2381 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
2382 | erp_action->adapter->pool.fsf_req_erp, | |
2383 | &lock_flags, &(erp_action->fsf_req)); | |
2384 | if (retval < 0) { | |
2385 | ZFCP_LOG_INFO("error: Could not create open port request " | |
2386 | "for port 0x%016Lx on adapter %s.\n", | |
2387 | erp_action->port->wwpn, | |
2388 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2389 | goto out; | |
2390 | } | |
2391 | ||
2392 | sbale = zfcp_qdio_sbale_req(erp_action->fsf_req, | |
2393 | erp_action->fsf_req->sbal_curr, 0); | |
2394 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
2395 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2396 | ||
2397 | erp_action->fsf_req->qtcb->bottom.support.d_id = erp_action->port->d_id; | |
2398 | atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->port->status); | |
059c97d0 | 2399 | erp_action->fsf_req->data = (unsigned long) erp_action->port; |
1da177e4 LT |
2400 | erp_action->fsf_req->erp_action = erp_action; |
2401 | ||
2402 | /* start QDIO request for this FSF request */ | |
2403 | retval = zfcp_fsf_req_send(erp_action->fsf_req, &erp_action->timer); | |
2404 | if (retval) { | |
2405 | ZFCP_LOG_INFO("error: Could not send open port request for " | |
2406 | "port 0x%016Lx on adapter %s.\n", | |
2407 | erp_action->port->wwpn, | |
2408 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2409 | zfcp_fsf_req_free(erp_action->fsf_req); | |
2410 | erp_action->fsf_req = NULL; | |
2411 | goto out; | |
2412 | } | |
2413 | ||
2414 | ZFCP_LOG_DEBUG("open port request initiated " | |
2415 | "(adapter %s, port 0x%016Lx)\n", | |
2416 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2417 | erp_action->port->wwpn); | |
2418 | out: | |
2419 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
2420 | lock_flags); | |
2421 | return retval; | |
2422 | } | |
2423 | ||
2424 | /* | |
2425 | * function: zfcp_fsf_open_port_handler | |
2426 | * | |
2427 | * purpose: is called for finished Open Port command | |
2428 | * | |
2429 | * returns: | |
2430 | */ | |
2431 | static int | |
2432 | zfcp_fsf_open_port_handler(struct zfcp_fsf_req *fsf_req) | |
2433 | { | |
2434 | int retval = -EINVAL; | |
2435 | struct zfcp_port *port; | |
2436 | struct fsf_plogi *plogi; | |
2437 | struct fsf_qtcb_header *header; | |
2438 | u16 subtable, rule, counter; | |
2439 | ||
059c97d0 | 2440 | port = (struct zfcp_port *) fsf_req->data; |
1da177e4 LT |
2441 | header = &fsf_req->qtcb->header; |
2442 | ||
2443 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
2444 | /* don't change port status in our bookkeeping */ | |
2445 | goto skip_fsfstatus; | |
2446 | } | |
2447 | ||
2448 | /* evaluate FSF status in QTCB */ | |
2449 | switch (header->fsf_status) { | |
2450 | ||
2451 | case FSF_PORT_ALREADY_OPEN: | |
1da177e4 LT |
2452 | ZFCP_LOG_NORMAL("bug: remote port 0x%016Lx on adapter %s " |
2453 | "is already open.\n", | |
2454 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2455 | debug_text_exception(fsf_req->adapter->erp_dbf, 0, | |
2456 | "fsf_s_popen"); | |
2457 | /* | |
2458 | * This is a bug, however operation should continue normally | |
2459 | * if it is simply ignored | |
2460 | */ | |
2461 | break; | |
2462 | ||
2463 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
2464 | ZFCP_LOG_NORMAL("Access denied, cannot open port 0x%016Lx " |
2465 | "on adapter %s\n", | |
2466 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2467 | for (counter = 0; counter < 2; counter++) { | |
2468 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
2469 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
2470 | switch (subtable) { | |
2471 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
2472 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
2473 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
2474 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
2475 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
2476 | zfcp_act_subtable_type[subtable], rule); | |
2477 | break; | |
2478 | } | |
2479 | } | |
2480 | debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_access"); | |
2481 | zfcp_erp_port_access_denied(port); | |
2482 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2483 | break; | |
2484 | ||
2485 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: | |
1da177e4 LT |
2486 | ZFCP_LOG_INFO("error: The FSF adapter is out of resources. " |
2487 | "The remote port 0x%016Lx on adapter %s " | |
2488 | "could not be opened. Disabling it.\n", | |
2489 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2490 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
2491 | "fsf_s_max_ports"); | |
2492 | zfcp_erp_port_failed(port); | |
2493 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2494 | break; | |
2495 | ||
2496 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
2497 | switch (header->fsf_status_qual.word[0]) { |
2498 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
2499 | debug_text_event(fsf_req->adapter->erp_dbf, 1, |
2500 | "fsf_sq_ltest"); | |
2501 | /* ERP strategy will escalate */ | |
2502 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2503 | break; | |
2504 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
2505 | /* ERP strategy will escalate */ | |
2506 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
2507 | "fsf_sq_ulp"); | |
2508 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2509 | break; | |
2510 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
1da177e4 LT |
2511 | ZFCP_LOG_NORMAL("The remote port 0x%016Lx on " |
2512 | "adapter %s could not be opened. " | |
2513 | "Disabling it.\n", | |
2514 | port->wwpn, | |
2515 | zfcp_get_busid_by_port(port)); | |
2516 | debug_text_exception(fsf_req->adapter->erp_dbf, 0, | |
2517 | "fsf_sq_no_retry"); | |
2518 | zfcp_erp_port_failed(port); | |
2519 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2520 | break; | |
2521 | default: | |
2522 | ZFCP_LOG_NORMAL | |
2523 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
2524 | header->fsf_status_qual.word[0]); | |
2525 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
2526 | "fsf_sq_inval:"); | |
2527 | debug_exception( | |
2528 | fsf_req->adapter->erp_dbf, 0, | |
2529 | &header->fsf_status_qual.word[0], | |
2530 | sizeof (u32)); | |
2531 | break; | |
2532 | } | |
2533 | break; | |
2534 | ||
2535 | case FSF_GOOD: | |
1da177e4 LT |
2536 | /* save port handle assigned by FSF */ |
2537 | port->handle = header->port_handle; | |
2538 | ZFCP_LOG_INFO("The remote port 0x%016Lx via adapter %s " | |
2539 | "was opened, it's port handle is 0x%x\n", | |
2540 | port->wwpn, zfcp_get_busid_by_port(port), | |
2541 | port->handle); | |
2542 | /* mark port as open */ | |
2543 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN | | |
2544 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
d736a27b AH |
2545 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
2546 | ZFCP_STATUS_COMMON_ACCESS_BOXED, | |
2547 | &port->status); | |
1da177e4 LT |
2548 | retval = 0; |
2549 | /* check whether D_ID has changed during open */ | |
2550 | /* | |
2551 | * FIXME: This check is not airtight, as the FCP channel does | |
2552 | * not monitor closures of target port connections caused on | |
2553 | * the remote side. Thus, they might miss out on invalidating | |
2554 | * locally cached WWPNs (and other N_Port parameters) of gone | |
2555 | * target ports. So, our heroic attempt to make things safe | |
2556 | * could be undermined by 'open port' response data tagged with | |
2557 | * obsolete WWPNs. Another reason to monitor potential | |
2558 | * connection closures ourself at least (by interpreting | |
2559 | * incoming ELS' and unsolicited status). It just crosses my | |
2560 | * mind that one should be able to cross-check by means of | |
2561 | * another GID_PN straight after a port has been opened. | |
2562 | * Alternately, an ADISC/PDISC ELS should suffice, as well. | |
2563 | */ | |
2564 | plogi = (struct fsf_plogi *) fsf_req->qtcb->bottom.support.els; | |
2565 | if (!atomic_test_mask(ZFCP_STATUS_PORT_NO_WWPN, &port->status)) | |
2566 | { | |
2567 | if (fsf_req->qtcb->bottom.support.els1_length < | |
2568 | ((((unsigned long) &plogi->serv_param.wwpn) - | |
2569 | ((unsigned long) plogi)) + sizeof (u64))) { | |
2570 | ZFCP_LOG_INFO( | |
2571 | "warning: insufficient length of " | |
2572 | "PLOGI payload (%i)\n", | |
2573 | fsf_req->qtcb->bottom.support.els1_length); | |
2574 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
2575 | "fsf_s_short_plogi:"); | |
2576 | /* skip sanity check and assume wwpn is ok */ | |
2577 | } else { | |
2578 | if (plogi->serv_param.wwpn != port->wwpn) { | |
2579 | ZFCP_LOG_INFO("warning: d_id of port " | |
2580 | "0x%016Lx changed during " | |
2581 | "open\n", port->wwpn); | |
2582 | debug_text_event( | |
2583 | fsf_req->adapter->erp_dbf, 0, | |
2584 | "fsf_s_did_change:"); | |
2585 | atomic_clear_mask( | |
2586 | ZFCP_STATUS_PORT_DID_DID, | |
2587 | &port->status); | |
2588 | } else | |
2589 | port->wwnn = plogi->serv_param.wwnn; | |
2590 | } | |
2591 | } | |
2592 | break; | |
2593 | ||
2594 | case FSF_UNKNOWN_OP_SUBTYPE: | |
2595 | /* should never occure, subtype not set in zfcp_fsf_open_port */ | |
1da177e4 LT |
2596 | ZFCP_LOG_INFO("unknown operation subtype (adapter: %s, " |
2597 | "op_subtype=0x%x)\n", | |
2598 | zfcp_get_busid_by_port(port), | |
2599 | fsf_req->qtcb->bottom.support.operation_subtype); | |
2600 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2601 | break; | |
2602 | ||
2603 | default: | |
2604 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
2605 | "(debug info 0x%x)\n", | |
2606 | header->fsf_status); | |
2607 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:"); | |
2608 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
2609 | &header->fsf_status, sizeof (u32)); | |
2610 | break; | |
2611 | } | |
2612 | ||
2613 | skip_fsfstatus: | |
2614 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &port->status); | |
2615 | return retval; | |
2616 | } | |
2617 | ||
2618 | /* | |
2619 | * function: zfcp_fsf_close_port | |
2620 | * | |
2621 | * purpose: submit FSF command "close port" | |
2622 | * | |
2623 | * returns: address of initiated FSF request | |
2624 | * NULL - request could not be initiated | |
2625 | */ | |
2626 | int | |
2627 | zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) | |
2628 | { | |
2629 | volatile struct qdio_buffer_element *sbale; | |
2630 | unsigned long lock_flags; | |
2631 | int retval = 0; | |
2632 | ||
2633 | /* setup new FSF request */ | |
2634 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
2635 | FSF_QTCB_CLOSE_PORT, | |
2636 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
2637 | erp_action->adapter->pool.fsf_req_erp, | |
2638 | &lock_flags, &(erp_action->fsf_req)); | |
2639 | if (retval < 0) { | |
2640 | ZFCP_LOG_INFO("error: Could not create a close port request " | |
2641 | "for port 0x%016Lx on adapter %s.\n", | |
2642 | erp_action->port->wwpn, | |
2643 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2644 | goto out; | |
2645 | } | |
2646 | ||
2647 | sbale = zfcp_qdio_sbale_req(erp_action->fsf_req, | |
2648 | erp_action->fsf_req->sbal_curr, 0); | |
2649 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
2650 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2651 | ||
2652 | atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->port->status); | |
059c97d0 | 2653 | erp_action->fsf_req->data = (unsigned long) erp_action->port; |
1da177e4 LT |
2654 | erp_action->fsf_req->erp_action = erp_action; |
2655 | erp_action->fsf_req->qtcb->header.port_handle = | |
2656 | erp_action->port->handle; | |
2657 | ||
2658 | /* start QDIO request for this FSF request */ | |
2659 | retval = zfcp_fsf_req_send(erp_action->fsf_req, &erp_action->timer); | |
2660 | if (retval) { | |
2661 | ZFCP_LOG_INFO("error: Could not send a close port request for " | |
2662 | "port 0x%016Lx on adapter %s.\n", | |
2663 | erp_action->port->wwpn, | |
2664 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2665 | zfcp_fsf_req_free(erp_action->fsf_req); | |
2666 | erp_action->fsf_req = NULL; | |
2667 | goto out; | |
2668 | } | |
2669 | ||
2670 | ZFCP_LOG_TRACE("close port request initiated " | |
2671 | "(adapter %s, port 0x%016Lx)\n", | |
2672 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2673 | erp_action->port->wwpn); | |
2674 | out: | |
2675 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
2676 | lock_flags); | |
2677 | return retval; | |
2678 | } | |
2679 | ||
2680 | /* | |
2681 | * function: zfcp_fsf_close_port_handler | |
2682 | * | |
2683 | * purpose: is called for finished Close Port FSF command | |
2684 | * | |
2685 | * returns: | |
2686 | */ | |
2687 | static int | |
2688 | zfcp_fsf_close_port_handler(struct zfcp_fsf_req *fsf_req) | |
2689 | { | |
2690 | int retval = -EINVAL; | |
2691 | struct zfcp_port *port; | |
2692 | ||
059c97d0 | 2693 | port = (struct zfcp_port *) fsf_req->data; |
1da177e4 LT |
2694 | |
2695 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
2696 | /* don't change port status in our bookkeeping */ | |
2697 | goto skip_fsfstatus; | |
2698 | } | |
2699 | ||
2700 | /* evaluate FSF status in QTCB */ | |
2701 | switch (fsf_req->qtcb->header.fsf_status) { | |
2702 | ||
2703 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
2704 | ZFCP_LOG_INFO("Temporary port identifier 0x%x for port " |
2705 | "0x%016Lx on adapter %s invalid. This may happen " | |
2706 | "occasionally.\n", port->handle, | |
2707 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2708 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
2709 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
2710 | (char *) &fsf_req->qtcb->header.fsf_status_qual, | |
2711 | sizeof (union fsf_status_qual)); | |
2712 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
2713 | "fsf_s_phand_nv"); | |
2714 | zfcp_erp_adapter_reopen(port->adapter, 0); | |
2715 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2716 | break; | |
2717 | ||
2718 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
2719 | /* Note: FSF has actually closed the port in this case. |
2720 | * The status code is just daft. Fingers crossed for a change | |
2721 | */ | |
2722 | retval = 0; | |
2723 | break; | |
2724 | ||
2725 | case FSF_GOOD: | |
1da177e4 LT |
2726 | ZFCP_LOG_TRACE("remote port 0x016%Lx on adapter %s closed, " |
2727 | "port handle 0x%x\n", port->wwpn, | |
2728 | zfcp_get_busid_by_port(port), port->handle); | |
2729 | zfcp_erp_modify_port_status(port, | |
2730 | ZFCP_STATUS_COMMON_OPEN, | |
2731 | ZFCP_CLEAR); | |
2732 | retval = 0; | |
2733 | break; | |
2734 | ||
2735 | default: | |
2736 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
2737 | "(debug info 0x%x)\n", | |
2738 | fsf_req->qtcb->header.fsf_status); | |
2739 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:"); | |
2740 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
2741 | &fsf_req->qtcb->header.fsf_status, | |
2742 | sizeof (u32)); | |
2743 | break; | |
2744 | } | |
2745 | ||
2746 | skip_fsfstatus: | |
2747 | atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &port->status); | |
2748 | return retval; | |
2749 | } | |
2750 | ||
2751 | /* | |
2752 | * function: zfcp_fsf_close_physical_port | |
2753 | * | |
2754 | * purpose: submit FSF command "close physical port" | |
2755 | * | |
2756 | * returns: address of initiated FSF request | |
2757 | * NULL - request could not be initiated | |
2758 | */ | |
2759 | int | |
2760 | zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) | |
2761 | { | |
2762 | int retval = 0; | |
2763 | unsigned long lock_flags; | |
2764 | volatile struct qdio_buffer_element *sbale; | |
2765 | ||
2766 | /* setup new FSF request */ | |
2767 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
2768 | FSF_QTCB_CLOSE_PHYSICAL_PORT, | |
2769 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
2770 | erp_action->adapter->pool.fsf_req_erp, | |
2771 | &lock_flags, &erp_action->fsf_req); | |
2772 | if (retval < 0) { | |
2773 | ZFCP_LOG_INFO("error: Could not create close physical port " | |
2774 | "request (adapter %s, port 0x%016Lx)\n", | |
2775 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2776 | erp_action->port->wwpn); | |
2777 | ||
2778 | goto out; | |
2779 | } | |
2780 | ||
2781 | sbale = zfcp_qdio_sbale_req(erp_action->fsf_req, | |
2782 | erp_action->fsf_req->sbal_curr, 0); | |
2783 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
2784 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2785 | ||
2786 | /* mark port as being closed */ | |
2787 | atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, | |
2788 | &erp_action->port->status); | |
2789 | /* save a pointer to this port */ | |
059c97d0 | 2790 | erp_action->fsf_req->data = (unsigned long) erp_action->port; |
aef4a983 | 2791 | /* port to be closed */ |
1da177e4 LT |
2792 | erp_action->fsf_req->qtcb->header.port_handle = |
2793 | erp_action->port->handle; | |
2794 | erp_action->fsf_req->erp_action = erp_action; | |
2795 | ||
2796 | /* start QDIO request for this FSF request */ | |
2797 | retval = zfcp_fsf_req_send(erp_action->fsf_req, &erp_action->timer); | |
2798 | if (retval) { | |
2799 | ZFCP_LOG_INFO("error: Could not send close physical port " | |
2800 | "request (adapter %s, port 0x%016Lx)\n", | |
2801 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2802 | erp_action->port->wwpn); | |
2803 | zfcp_fsf_req_free(erp_action->fsf_req); | |
2804 | erp_action->fsf_req = NULL; | |
2805 | goto out; | |
2806 | } | |
2807 | ||
2808 | ZFCP_LOG_TRACE("close physical port request initiated " | |
2809 | "(adapter %s, port 0x%016Lx)\n", | |
2810 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2811 | erp_action->port->wwpn); | |
2812 | out: | |
2813 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
2814 | lock_flags); | |
2815 | return retval; | |
2816 | } | |
2817 | ||
2818 | /* | |
2819 | * function: zfcp_fsf_close_physical_port_handler | |
2820 | * | |
2821 | * purpose: is called for finished Close Physical Port FSF command | |
2822 | * | |
2823 | * returns: | |
2824 | */ | |
2825 | static int | |
2826 | zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *fsf_req) | |
2827 | { | |
2828 | int retval = -EINVAL; | |
2829 | struct zfcp_port *port; | |
2830 | struct zfcp_unit *unit; | |
2831 | struct fsf_qtcb_header *header; | |
2832 | u16 subtable, rule, counter; | |
2833 | ||
059c97d0 | 2834 | port = (struct zfcp_port *) fsf_req->data; |
1da177e4 LT |
2835 | header = &fsf_req->qtcb->header; |
2836 | ||
2837 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
2838 | /* don't change port status in our bookkeeping */ | |
2839 | goto skip_fsfstatus; | |
2840 | } | |
2841 | ||
2842 | /* evaluate FSF status in QTCB */ | |
2843 | switch (header->fsf_status) { | |
2844 | ||
2845 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
2846 | ZFCP_LOG_INFO("Temporary port identifier 0x%x invalid" |
2847 | "(adapter %s, port 0x%016Lx). " | |
2848 | "This may happen occasionally.\n", | |
2849 | port->handle, | |
2850 | zfcp_get_busid_by_port(port), | |
2851 | port->wwpn); | |
2852 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
2853 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
2854 | (char *) &header->fsf_status_qual, | |
2855 | sizeof (union fsf_status_qual)); | |
2856 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
2857 | "fsf_s_phand_nv"); | |
2858 | zfcp_erp_adapter_reopen(port->adapter, 0); | |
2859 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2860 | break; | |
2861 | ||
2862 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
2863 | ZFCP_LOG_NORMAL("Access denied, cannot close " |
2864 | "physical port 0x%016Lx on adapter %s\n", | |
2865 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2866 | for (counter = 0; counter < 2; counter++) { | |
2867 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
2868 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
2869 | switch (subtable) { | |
2870 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
2871 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
2872 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
2873 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
2874 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
2875 | zfcp_act_subtable_type[subtable], rule); | |
2876 | break; | |
2877 | } | |
2878 | } | |
2879 | debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_access"); | |
2880 | zfcp_erp_port_access_denied(port); | |
2881 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2882 | break; | |
2883 | ||
2884 | case FSF_PORT_BOXED: | |
1da177e4 LT |
2885 | ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter " |
2886 | "%s needs to be reopened but it was attempted " | |
2887 | "to close it physically.\n", | |
2888 | port->wwpn, | |
2889 | zfcp_get_busid_by_port(port)); | |
2890 | debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_pboxed"); | |
d736a27b | 2891 | zfcp_erp_port_boxed(port); |
1da177e4 LT |
2892 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
2893 | ZFCP_STATUS_FSFREQ_RETRY; | |
2894 | break; | |
2895 | ||
2896 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
2897 | switch (header->fsf_status_qual.word[0]) { |
2898 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
2899 | debug_text_event(fsf_req->adapter->erp_dbf, 1, |
2900 | "fsf_sq_ltest"); | |
2901 | /* This will now be escalated by ERP */ | |
2902 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2903 | break; | |
2904 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
2905 | /* ERP strategy will escalate */ |
2906 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
2907 | "fsf_sq_ulp"); | |
2908 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2909 | break; | |
2910 | default: | |
2911 | ZFCP_LOG_NORMAL | |
2912 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
2913 | header->fsf_status_qual.word[0]); | |
2914 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
2915 | "fsf_sq_inval:"); | |
2916 | debug_exception( | |
2917 | fsf_req->adapter->erp_dbf, 0, | |
2918 | &header->fsf_status_qual.word[0], sizeof (u32)); | |
2919 | break; | |
2920 | } | |
2921 | break; | |
2922 | ||
2923 | case FSF_GOOD: | |
1da177e4 LT |
2924 | ZFCP_LOG_DEBUG("Remote port 0x%016Lx via adapter %s " |
2925 | "physically closed, port handle 0x%x\n", | |
2926 | port->wwpn, | |
2927 | zfcp_get_busid_by_port(port), port->handle); | |
2928 | /* can't use generic zfcp_erp_modify_port_status because | |
2929 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port | |
2930 | */ | |
2931 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
2932 | list_for_each_entry(unit, &port->unit_list_head, list) | |
2933 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); | |
2934 | retval = 0; | |
2935 | break; | |
2936 | ||
2937 | default: | |
2938 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
2939 | "(debug info 0x%x)\n", | |
2940 | header->fsf_status); | |
2941 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:"); | |
2942 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
2943 | &header->fsf_status, sizeof (u32)); | |
2944 | break; | |
2945 | } | |
2946 | ||
2947 | skip_fsfstatus: | |
2948 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, &port->status); | |
2949 | return retval; | |
2950 | } | |
2951 | ||
2952 | /* | |
2953 | * function: zfcp_fsf_open_unit | |
2954 | * | |
2955 | * purpose: | |
2956 | * | |
2957 | * returns: | |
2958 | * | |
2959 | * assumptions: This routine does not check whether the associated | |
2960 | * remote port has already been opened. This should be | |
2961 | * done by calling routines. Otherwise some status | |
2962 | * may be presented by FSF | |
2963 | */ | |
2964 | int | |
2965 | zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) | |
2966 | { | |
2967 | volatile struct qdio_buffer_element *sbale; | |
2968 | unsigned long lock_flags; | |
2969 | int retval = 0; | |
2970 | ||
2971 | /* setup new FSF request */ | |
2972 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
2973 | FSF_QTCB_OPEN_LUN, | |
2974 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
2975 | erp_action->adapter->pool.fsf_req_erp, | |
2976 | &lock_flags, &(erp_action->fsf_req)); | |
2977 | if (retval < 0) { | |
2978 | ZFCP_LOG_INFO("error: Could not create open unit request for " | |
2979 | "unit 0x%016Lx on port 0x%016Lx on adapter %s.\n", | |
2980 | erp_action->unit->fcp_lun, | |
2981 | erp_action->unit->port->wwpn, | |
2982 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2983 | goto out; | |
2984 | } | |
2985 | ||
2986 | sbale = zfcp_qdio_sbale_req(erp_action->fsf_req, | |
2987 | erp_action->fsf_req->sbal_curr, 0); | |
2988 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
2989 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2990 | ||
2991 | erp_action->fsf_req->qtcb->header.port_handle = | |
2992 | erp_action->port->handle; | |
2993 | erp_action->fsf_req->qtcb->bottom.support.fcp_lun = | |
2994 | erp_action->unit->fcp_lun; | |
aef4a983 | 2995 | if (!(erp_action->adapter->connection_features & FSF_FEATURE_NPIV_MODE)) |
1da177e4 LT |
2996 | erp_action->fsf_req->qtcb->bottom.support.option = |
2997 | FSF_OPEN_LUN_SUPPRESS_BOXING; | |
2998 | atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->unit->status); | |
059c97d0 | 2999 | erp_action->fsf_req->data = (unsigned long) erp_action->unit; |
1da177e4 LT |
3000 | erp_action->fsf_req->erp_action = erp_action; |
3001 | ||
3002 | /* start QDIO request for this FSF request */ | |
3003 | retval = zfcp_fsf_req_send(erp_action->fsf_req, &erp_action->timer); | |
3004 | if (retval) { | |
3005 | ZFCP_LOG_INFO("error: Could not send an open unit request " | |
3006 | "on the adapter %s, port 0x%016Lx for " | |
3007 | "unit 0x%016Lx\n", | |
3008 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
3009 | erp_action->port->wwpn, | |
3010 | erp_action->unit->fcp_lun); | |
3011 | zfcp_fsf_req_free(erp_action->fsf_req); | |
3012 | erp_action->fsf_req = NULL; | |
3013 | goto out; | |
3014 | } | |
3015 | ||
3016 | ZFCP_LOG_TRACE("Open LUN request initiated (adapter %s, " | |
3017 | "port 0x%016Lx, unit 0x%016Lx)\n", | |
3018 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
3019 | erp_action->port->wwpn, erp_action->unit->fcp_lun); | |
3020 | out: | |
3021 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
3022 | lock_flags); | |
3023 | return retval; | |
3024 | } | |
3025 | ||
3026 | /* | |
3027 | * function: zfcp_fsf_open_unit_handler | |
3028 | * | |
3029 | * purpose: is called for finished Open LUN command | |
3030 | * | |
3031 | * returns: | |
3032 | */ | |
3033 | static int | |
3034 | zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *fsf_req) | |
3035 | { | |
3036 | int retval = -EINVAL; | |
3037 | struct zfcp_adapter *adapter; | |
3038 | struct zfcp_unit *unit; | |
3039 | struct fsf_qtcb_header *header; | |
3040 | struct fsf_qtcb_bottom_support *bottom; | |
3041 | struct fsf_queue_designator *queue_designator; | |
3042 | u16 subtable, rule, counter; | |
aef4a983 | 3043 | int exclusive, readwrite; |
1da177e4 | 3044 | |
059c97d0 | 3045 | unit = (struct zfcp_unit *) fsf_req->data; |
1da177e4 LT |
3046 | |
3047 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
3048 | /* don't change unit status in our bookkeeping */ | |
3049 | goto skip_fsfstatus; | |
3050 | } | |
3051 | ||
3052 | adapter = fsf_req->adapter; | |
3053 | header = &fsf_req->qtcb->header; | |
3054 | bottom = &fsf_req->qtcb->bottom.support; | |
3055 | queue_designator = &header->fsf_status_qual.fsf_queue_designator; | |
3056 | ||
1da177e4 LT |
3057 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
3058 | ZFCP_STATUS_UNIT_SHARED | | |
3059 | ZFCP_STATUS_UNIT_READONLY, | |
3060 | &unit->status); | |
3061 | ||
3062 | /* evaluate FSF status in QTCB */ | |
3063 | switch (header->fsf_status) { | |
3064 | ||
3065 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
3066 | ZFCP_LOG_INFO("Temporary port identifier 0x%x " |
3067 | "for port 0x%016Lx on adapter %s invalid " | |
3068 | "This may happen occasionally\n", | |
3069 | unit->port->handle, | |
3070 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3071 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
3072 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3073 | (char *) &header->fsf_status_qual, | |
3074 | sizeof (union fsf_status_qual)); | |
3075 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_ph_nv"); | |
3076 | zfcp_erp_adapter_reopen(unit->port->adapter, 0); | |
3077 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3078 | break; | |
3079 | ||
3080 | case FSF_LUN_ALREADY_OPEN: | |
1da177e4 LT |
3081 | ZFCP_LOG_NORMAL("bug: Attempted to open unit 0x%016Lx on " |
3082 | "remote port 0x%016Lx on adapter %s twice.\n", | |
3083 | unit->fcp_lun, | |
3084 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3085 | debug_text_exception(adapter->erp_dbf, 0, | |
3086 | "fsf_s_uopen"); | |
3087 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3088 | break; | |
3089 | ||
3090 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
3091 | ZFCP_LOG_NORMAL("Access denied, cannot open unit 0x%016Lx on " |
3092 | "remote port 0x%016Lx on adapter %s\n", | |
3093 | unit->fcp_lun, unit->port->wwpn, | |
3094 | zfcp_get_busid_by_unit(unit)); | |
3095 | for (counter = 0; counter < 2; counter++) { | |
3096 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
3097 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
3098 | switch (subtable) { | |
3099 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
3100 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
3101 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
3102 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
3103 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
3104 | zfcp_act_subtable_type[subtable], rule); | |
3105 | break; | |
3106 | } | |
3107 | } | |
3108 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_access"); | |
3109 | zfcp_erp_unit_access_denied(unit); | |
3110 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); | |
3111 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); | |
3112 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3113 | break; | |
3114 | ||
3115 | case FSF_PORT_BOXED: | |
1da177e4 LT |
3116 | ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s " |
3117 | "needs to be reopened\n", | |
3118 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3119 | debug_text_event(adapter->erp_dbf, 2, "fsf_s_pboxed"); | |
d736a27b | 3120 | zfcp_erp_port_boxed(unit->port); |
1da177e4 LT |
3121 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
3122 | ZFCP_STATUS_FSFREQ_RETRY; | |
3123 | break; | |
3124 | ||
3125 | case FSF_LUN_SHARING_VIOLATION: | |
1da177e4 LT |
3126 | if (header->fsf_status_qual.word[0] != 0) { |
3127 | ZFCP_LOG_NORMAL("FCP-LUN 0x%Lx at the remote port " | |
3128 | "with WWPN 0x%Lx " | |
3129 | "connected to the adapter %s " | |
3130 | "is already in use in LPAR%d, CSS%d\n", | |
3131 | unit->fcp_lun, | |
3132 | unit->port->wwpn, | |
3133 | zfcp_get_busid_by_unit(unit), | |
3134 | queue_designator->hla, | |
3135 | queue_designator->cssid); | |
3136 | } else { | |
3137 | subtable = header->fsf_status_qual.halfword[4]; | |
3138 | rule = header->fsf_status_qual.halfword[5]; | |
3139 | switch (subtable) { | |
3140 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
3141 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
3142 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
3143 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
3144 | ZFCP_LOG_NORMAL("Access to FCP-LUN 0x%Lx at the " | |
3145 | "remote port with WWPN 0x%Lx " | |
3146 | "connected to the adapter %s " | |
3147 | "is denied (%s rule %d)\n", | |
3148 | unit->fcp_lun, | |
3149 | unit->port->wwpn, | |
3150 | zfcp_get_busid_by_unit(unit), | |
3151 | zfcp_act_subtable_type[subtable], | |
3152 | rule); | |
3153 | break; | |
3154 | } | |
3155 | } | |
3156 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
3157 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3158 | (char *) &header->fsf_status_qual, | |
3159 | sizeof (union fsf_status_qual)); | |
3160 | debug_text_event(adapter->erp_dbf, 2, | |
3161 | "fsf_s_l_sh_vio"); | |
3162 | zfcp_erp_unit_access_denied(unit); | |
3163 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); | |
3164 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); | |
3165 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3166 | break; | |
3167 | ||
3168 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: | |
1da177e4 LT |
3169 | ZFCP_LOG_INFO("error: The adapter ran out of resources. " |
3170 | "There is no handle (temporary port identifier) " | |
3171 | "available for unit 0x%016Lx on port 0x%016Lx " | |
3172 | "on adapter %s\n", | |
3173 | unit->fcp_lun, | |
3174 | unit->port->wwpn, | |
3175 | zfcp_get_busid_by_unit(unit)); | |
3176 | debug_text_event(adapter->erp_dbf, 1, | |
3177 | "fsf_s_max_units"); | |
3178 | zfcp_erp_unit_failed(unit); | |
3179 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3180 | break; | |
3181 | ||
3182 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
3183 | switch (header->fsf_status_qual.word[0]) { |
3184 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
3185 | /* Re-establish link to port */ |
3186 | debug_text_event(adapter->erp_dbf, 1, | |
3187 | "fsf_sq_ltest"); | |
65a8d4e1 | 3188 | zfcp_test_link(unit->port); |
1da177e4 LT |
3189 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3190 | break; | |
3191 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
3192 | /* ERP strategy will escalate */ |
3193 | debug_text_event(adapter->erp_dbf, 1, | |
3194 | "fsf_sq_ulp"); | |
3195 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3196 | break; | |
3197 | default: | |
3198 | ZFCP_LOG_NORMAL | |
3199 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
3200 | header->fsf_status_qual.word[0]); | |
3201 | debug_text_event(adapter->erp_dbf, 0, | |
3202 | "fsf_sq_inval:"); | |
3203 | debug_exception(adapter->erp_dbf, 0, | |
3204 | &header->fsf_status_qual.word[0], | |
3205 | sizeof (u32)); | |
3206 | } | |
3207 | break; | |
3208 | ||
3209 | case FSF_INVALID_COMMAND_OPTION: | |
1da177e4 LT |
3210 | ZFCP_LOG_NORMAL( |
3211 | "Invalid option 0x%x has been specified " | |
3212 | "in QTCB bottom sent to the adapter %s\n", | |
3213 | bottom->option, | |
3214 | zfcp_get_busid_by_adapter(adapter)); | |
3215 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3216 | retval = -EINVAL; | |
3217 | break; | |
3218 | ||
3219 | case FSF_GOOD: | |
1da177e4 LT |
3220 | /* save LUN handle assigned by FSF */ |
3221 | unit->handle = header->lun_handle; | |
3222 | ZFCP_LOG_TRACE("unit 0x%016Lx on remote port 0x%016Lx on " | |
3223 | "adapter %s opened, port handle 0x%x\n", | |
3224 | unit->fcp_lun, | |
3225 | unit->port->wwpn, | |
3226 | zfcp_get_busid_by_unit(unit), | |
3227 | unit->handle); | |
3228 | /* mark unit as open */ | |
3229 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); | |
aef4a983 MS |
3230 | |
3231 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) && | |
3232 | (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) && | |
3233 | (adapter->ccw_device->id.dev_model != ZFCP_DEVICE_MODEL_PRIV)) { | |
3234 | exclusive = (bottom->lun_access_info & | |
3235 | FSF_UNIT_ACCESS_EXCLUSIVE); | |
3236 | readwrite = (bottom->lun_access_info & | |
3237 | FSF_UNIT_ACCESS_OUTBOUND_TRANSFER); | |
3238 | ||
1da177e4 LT |
3239 | if (!exclusive) |
3240 | atomic_set_mask(ZFCP_STATUS_UNIT_SHARED, | |
3241 | &unit->status); | |
3242 | ||
3243 | if (!readwrite) { | |
3244 | atomic_set_mask(ZFCP_STATUS_UNIT_READONLY, | |
3245 | &unit->status); | |
3246 | ZFCP_LOG_NORMAL("read-only access for unit " | |
3247 | "(adapter %s, wwpn=0x%016Lx, " | |
3248 | "fcp_lun=0x%016Lx)\n", | |
3249 | zfcp_get_busid_by_unit(unit), | |
3250 | unit->port->wwpn, | |
3251 | unit->fcp_lun); | |
3252 | } | |
3253 | ||
3254 | if (exclusive && !readwrite) { | |
3255 | ZFCP_LOG_NORMAL("exclusive access of read-only " | |
3256 | "unit not supported\n"); | |
3257 | zfcp_erp_unit_failed(unit); | |
3258 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3259 | zfcp_erp_unit_shutdown(unit, 0); | |
3260 | } else if (!exclusive && readwrite) { | |
3261 | ZFCP_LOG_NORMAL("shared access of read-write " | |
3262 | "unit not supported\n"); | |
3263 | zfcp_erp_unit_failed(unit); | |
3264 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3265 | zfcp_erp_unit_shutdown(unit, 0); | |
3266 | } | |
3267 | } | |
3268 | ||
3269 | retval = 0; | |
3270 | break; | |
3271 | ||
3272 | default: | |
3273 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
3274 | "(debug info 0x%x)\n", | |
3275 | header->fsf_status); | |
3276 | debug_text_event(adapter->erp_dbf, 0, "fsf_s_inval:"); | |
3277 | debug_exception(adapter->erp_dbf, 0, | |
3278 | &header->fsf_status, sizeof (u32)); | |
3279 | break; | |
3280 | } | |
3281 | ||
3282 | skip_fsfstatus: | |
3283 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &unit->status); | |
3284 | return retval; | |
3285 | } | |
3286 | ||
3287 | /* | |
3288 | * function: zfcp_fsf_close_unit | |
3289 | * | |
3290 | * purpose: | |
3291 | * | |
3292 | * returns: address of fsf_req - request successfully initiated | |
3293 | * NULL - | |
3294 | * | |
3295 | * assumptions: This routine does not check whether the associated | |
3296 | * remote port/lun has already been opened. This should be | |
3297 | * done by calling routines. Otherwise some status | |
3298 | * may be presented by FSF | |
3299 | */ | |
3300 | int | |
3301 | zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) | |
3302 | { | |
3303 | volatile struct qdio_buffer_element *sbale; | |
3304 | unsigned long lock_flags; | |
3305 | int retval = 0; | |
3306 | ||
3307 | /* setup new FSF request */ | |
3308 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
3309 | FSF_QTCB_CLOSE_LUN, | |
3310 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
3311 | erp_action->adapter->pool.fsf_req_erp, | |
3312 | &lock_flags, &(erp_action->fsf_req)); | |
3313 | if (retval < 0) { | |
3314 | ZFCP_LOG_INFO("error: Could not create close unit request for " | |
3315 | "unit 0x%016Lx on port 0x%016Lx on adapter %s.\n", | |
3316 | erp_action->unit->fcp_lun, | |
3317 | erp_action->port->wwpn, | |
3318 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
3319 | goto out; | |
3320 | } | |
3321 | ||
3322 | sbale = zfcp_qdio_sbale_req(erp_action->fsf_req, | |
3323 | erp_action->fsf_req->sbal_curr, 0); | |
3324 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
3325 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
3326 | ||
3327 | erp_action->fsf_req->qtcb->header.port_handle = | |
3328 | erp_action->port->handle; | |
3329 | erp_action->fsf_req->qtcb->header.lun_handle = erp_action->unit->handle; | |
3330 | atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->unit->status); | |
059c97d0 | 3331 | erp_action->fsf_req->data = (unsigned long) erp_action->unit; |
1da177e4 LT |
3332 | erp_action->fsf_req->erp_action = erp_action; |
3333 | ||
3334 | /* start QDIO request for this FSF request */ | |
3335 | retval = zfcp_fsf_req_send(erp_action->fsf_req, &erp_action->timer); | |
3336 | if (retval) { | |
3337 | ZFCP_LOG_INFO("error: Could not send a close unit request for " | |
3338 | "unit 0x%016Lx on port 0x%016Lx onadapter %s.\n", | |
3339 | erp_action->unit->fcp_lun, | |
3340 | erp_action->port->wwpn, | |
3341 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
3342 | zfcp_fsf_req_free(erp_action->fsf_req); | |
3343 | erp_action->fsf_req = NULL; | |
3344 | goto out; | |
3345 | } | |
3346 | ||
3347 | ZFCP_LOG_TRACE("Close LUN request initiated (adapter %s, " | |
3348 | "port 0x%016Lx, unit 0x%016Lx)\n", | |
3349 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
3350 | erp_action->port->wwpn, erp_action->unit->fcp_lun); | |
3351 | out: | |
3352 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
3353 | lock_flags); | |
3354 | return retval; | |
3355 | } | |
3356 | ||
3357 | /* | |
3358 | * function: zfcp_fsf_close_unit_handler | |
3359 | * | |
3360 | * purpose: is called for finished Close LUN FSF command | |
3361 | * | |
3362 | * returns: | |
3363 | */ | |
3364 | static int | |
3365 | zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *fsf_req) | |
3366 | { | |
3367 | int retval = -EINVAL; | |
3368 | struct zfcp_unit *unit; | |
3369 | ||
059c97d0 | 3370 | unit = (struct zfcp_unit *) fsf_req->data; |
1da177e4 LT |
3371 | |
3372 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
3373 | /* don't change unit status in our bookkeeping */ | |
3374 | goto skip_fsfstatus; | |
3375 | } | |
3376 | ||
3377 | /* evaluate FSF status in QTCB */ | |
3378 | switch (fsf_req->qtcb->header.fsf_status) { | |
3379 | ||
3380 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
3381 | ZFCP_LOG_INFO("Temporary port identifier 0x%x for port " |
3382 | "0x%016Lx on adapter %s invalid. This may " | |
3383 | "happen in rare circumstances\n", | |
3384 | unit->port->handle, | |
3385 | unit->port->wwpn, | |
3386 | zfcp_get_busid_by_unit(unit)); | |
3387 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
3388 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3389 | (char *) &fsf_req->qtcb->header.fsf_status_qual, | |
3390 | sizeof (union fsf_status_qual)); | |
3391 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3392 | "fsf_s_phand_nv"); | |
3393 | zfcp_erp_adapter_reopen(unit->port->adapter, 0); | |
1da177e4 LT |
3394 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3395 | break; | |
3396 | ||
3397 | case FSF_LUN_HANDLE_NOT_VALID: | |
1da177e4 LT |
3398 | ZFCP_LOG_INFO("Temporary LUN identifier 0x%x of unit " |
3399 | "0x%016Lx on port 0x%016Lx on adapter %s is " | |
3400 | "invalid. This may happen occasionally.\n", | |
3401 | unit->handle, | |
3402 | unit->fcp_lun, | |
3403 | unit->port->wwpn, | |
3404 | zfcp_get_busid_by_unit(unit)); | |
3405 | ZFCP_LOG_DEBUG("Status qualifier data:\n"); | |
3406 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3407 | (char *) &fsf_req->qtcb->header.fsf_status_qual, | |
3408 | sizeof (union fsf_status_qual)); | |
3409 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3410 | "fsf_s_lhand_nv"); | |
3411 | zfcp_erp_port_reopen(unit->port, 0); | |
1da177e4 LT |
3412 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3413 | break; | |
3414 | ||
3415 | case FSF_PORT_BOXED: | |
1da177e4 LT |
3416 | ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s " |
3417 | "needs to be reopened\n", | |
3418 | unit->port->wwpn, | |
3419 | zfcp_get_busid_by_unit(unit)); | |
3420 | debug_text_event(fsf_req->adapter->erp_dbf, 2, "fsf_s_pboxed"); | |
d736a27b | 3421 | zfcp_erp_port_boxed(unit->port); |
1da177e4 LT |
3422 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
3423 | ZFCP_STATUS_FSFREQ_RETRY; | |
3424 | break; | |
3425 | ||
3426 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
3427 | switch (fsf_req->qtcb->header.fsf_status_qual.word[0]) { |
3428 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
3429 | /* re-establish link to port */ |
3430 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3431 | "fsf_sq_ltest"); | |
65a8d4e1 | 3432 | zfcp_test_link(unit->port); |
1da177e4 LT |
3433 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3434 | break; | |
3435 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
3436 | /* ERP strategy will escalate */ |
3437 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3438 | "fsf_sq_ulp"); | |
3439 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3440 | break; | |
3441 | default: | |
3442 | ZFCP_LOG_NORMAL | |
3443 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
3444 | fsf_req->qtcb->header.fsf_status_qual.word[0]); | |
3445 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
3446 | "fsf_sq_inval:"); | |
3447 | debug_exception( | |
3448 | fsf_req->adapter->erp_dbf, 0, | |
3449 | &fsf_req->qtcb->header.fsf_status_qual.word[0], | |
3450 | sizeof (u32)); | |
3451 | break; | |
3452 | } | |
3453 | break; | |
3454 | ||
3455 | case FSF_GOOD: | |
1da177e4 LT |
3456 | ZFCP_LOG_TRACE("unit 0x%016Lx on port 0x%016Lx on adapter %s " |
3457 | "closed, port handle 0x%x\n", | |
3458 | unit->fcp_lun, | |
3459 | unit->port->wwpn, | |
3460 | zfcp_get_busid_by_unit(unit), | |
3461 | unit->handle); | |
3462 | /* mark unit as closed */ | |
3463 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); | |
3464 | retval = 0; | |
3465 | break; | |
3466 | ||
3467 | default: | |
3468 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
3469 | "(debug info 0x%x)\n", | |
3470 | fsf_req->qtcb->header.fsf_status); | |
3471 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:"); | |
3472 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
3473 | &fsf_req->qtcb->header.fsf_status, | |
3474 | sizeof (u32)); | |
3475 | break; | |
3476 | } | |
3477 | ||
3478 | skip_fsfstatus: | |
3479 | atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &unit->status); | |
3480 | return retval; | |
3481 | } | |
3482 | ||
3483 | /** | |
3484 | * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command) | |
3485 | * @adapter: adapter where scsi command is issued | |
3486 | * @unit: unit where command is sent to | |
3487 | * @scsi_cmnd: scsi command to be sent | |
3488 | * @timer: timer to be started when request is initiated | |
3489 | * @req_flags: flags for fsf_request | |
3490 | */ | |
3491 | int | |
3492 | zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter, | |
3493 | struct zfcp_unit *unit, | |
3494 | struct scsi_cmnd * scsi_cmnd, | |
3495 | struct timer_list *timer, int req_flags) | |
3496 | { | |
3497 | struct zfcp_fsf_req *fsf_req = NULL; | |
3498 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
3499 | unsigned int sbtype; | |
3500 | unsigned long lock_flags; | |
3501 | int real_bytes = 0; | |
3502 | int retval = 0; | |
3503 | int mask; | |
3504 | ||
3505 | /* setup new FSF request */ | |
3506 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, | |
3507 | adapter->pool.fsf_req_scsi, | |
3508 | &lock_flags, &fsf_req); | |
3509 | if (unlikely(retval < 0)) { | |
3510 | ZFCP_LOG_DEBUG("error: Could not create FCP command request " | |
3511 | "for unit 0x%016Lx on port 0x%016Lx on " | |
3512 | "adapter %s\n", | |
3513 | unit->fcp_lun, | |
3514 | unit->port->wwpn, | |
3515 | zfcp_get_busid_by_adapter(adapter)); | |
3516 | goto failed_req_create; | |
3517 | } | |
3518 | ||
059c97d0 AH |
3519 | zfcp_unit_get(unit); |
3520 | fsf_req->unit = unit; | |
1da177e4 | 3521 | |
059c97d0 AH |
3522 | /* associate FSF request with SCSI request (for look up on abort) */ |
3523 | scsi_cmnd->host_scribble = (char *) fsf_req; | |
3524 | ||
3525 | /* associate SCSI command with FSF request */ | |
3526 | fsf_req->data = (unsigned long) scsi_cmnd; | |
1da177e4 LT |
3527 | |
3528 | /* set handles of unit and its parent port in QTCB */ | |
3529 | fsf_req->qtcb->header.lun_handle = unit->handle; | |
3530 | fsf_req->qtcb->header.port_handle = unit->port->handle; | |
3531 | ||
3532 | /* FSF does not define the structure of the FCP_CMND IU */ | |
3533 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) | |
3534 | &(fsf_req->qtcb->bottom.io.fcp_cmnd); | |
3535 | ||
3536 | /* | |
3537 | * set depending on data direction: | |
3538 | * data direction bits in SBALE (SB Type) | |
3539 | * data direction bits in QTCB | |
3540 | * data direction bits in FCP_CMND IU | |
3541 | */ | |
3542 | switch (scsi_cmnd->sc_data_direction) { | |
3543 | case DMA_NONE: | |
1da177e4 LT |
3544 | fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; |
3545 | /* | |
3546 | * FIXME(qdio): | |
3547 | * what is the correct type for commands | |
3548 | * without 'real' data buffers? | |
3549 | */ | |
3550 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
3551 | break; | |
3552 | case DMA_FROM_DEVICE: | |
1da177e4 LT |
3553 | fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ; |
3554 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
3555 | fcp_cmnd_iu->rddata = 1; | |
3556 | break; | |
3557 | case DMA_TO_DEVICE: | |
1da177e4 LT |
3558 | fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE; |
3559 | sbtype = SBAL_FLAGS0_TYPE_WRITE; | |
3560 | fcp_cmnd_iu->wddata = 1; | |
3561 | break; | |
3562 | case DMA_BIDIRECTIONAL: | |
1da177e4 LT |
3563 | default: |
3564 | /* | |
3565 | * dummy, catch this condition earlier | |
3566 | * in zfcp_scsi_queuecommand | |
3567 | */ | |
3568 | goto failed_scsi_cmnd; | |
3569 | } | |
3570 | ||
3571 | /* set FC service class in QTCB (3 per default) */ | |
3572 | fsf_req->qtcb->bottom.io.service_class = adapter->fc_service_class; | |
3573 | ||
3574 | /* set FCP_LUN in FCP_CMND IU in QTCB */ | |
3575 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
3576 | ||
3577 | mask = ZFCP_STATUS_UNIT_READONLY | ZFCP_STATUS_UNIT_SHARED; | |
3578 | ||
3579 | /* set task attributes in FCP_CMND IU in QTCB */ | |
3580 | if (likely((scsi_cmnd->device->simple_tags) || | |
3581 | (atomic_test_mask(mask, &unit->status)))) | |
3582 | fcp_cmnd_iu->task_attribute = SIMPLE_Q; | |
3583 | else | |
3584 | fcp_cmnd_iu->task_attribute = UNTAGGED; | |
3585 | ||
3586 | /* set additional length of FCP_CDB in FCP_CMND IU in QTCB, if needed */ | |
3587 | if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH)) { | |
3588 | fcp_cmnd_iu->add_fcp_cdb_length | |
3589 | = (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2; | |
3590 | ZFCP_LOG_TRACE("SCSI CDB length is 0x%x, " | |
3591 | "additional FCP_CDB length is 0x%x " | |
3592 | "(shifted right 2 bits)\n", | |
3593 | scsi_cmnd->cmd_len, | |
3594 | fcp_cmnd_iu->add_fcp_cdb_length); | |
3595 | } | |
3596 | /* | |
3597 | * copy SCSI CDB (including additional length, if any) to | |
3598 | * FCP_CDB in FCP_CMND IU in QTCB | |
3599 | */ | |
3600 | memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); | |
3601 | ||
3602 | /* FCP CMND IU length in QTCB */ | |
3603 | fsf_req->qtcb->bottom.io.fcp_cmnd_length = | |
3604 | sizeof (struct fcp_cmnd_iu) + | |
3605 | fcp_cmnd_iu->add_fcp_cdb_length + sizeof (fcp_dl_t); | |
3606 | ||
3607 | /* generate SBALEs from data buffer */ | |
3608 | real_bytes = zfcp_qdio_sbals_from_scsicmnd(fsf_req, sbtype, scsi_cmnd); | |
3609 | if (unlikely(real_bytes < 0)) { | |
3610 | if (fsf_req->sbal_number < ZFCP_MAX_SBALS_PER_REQ) { | |
3611 | ZFCP_LOG_DEBUG( | |
3612 | "Data did not fit into available buffer(s), " | |
3613 | "waiting for more...\n"); | |
3614 | retval = -EIO; | |
3615 | } else { | |
3616 | ZFCP_LOG_NORMAL("error: No truncation implemented but " | |
3617 | "required. Shutting down unit " | |
3618 | "(adapter %s, port 0x%016Lx, " | |
3619 | "unit 0x%016Lx)\n", | |
3620 | zfcp_get_busid_by_unit(unit), | |
3621 | unit->port->wwpn, | |
3622 | unit->fcp_lun); | |
3623 | zfcp_erp_unit_shutdown(unit, 0); | |
3624 | retval = -EINVAL; | |
3625 | } | |
3626 | goto no_fit; | |
3627 | } | |
3628 | ||
3629 | /* set length of FCP data length in FCP_CMND IU in QTCB */ | |
3630 | zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes); | |
3631 | ||
3632 | ZFCP_LOG_DEBUG("Sending SCSI command:\n"); | |
3633 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3634 | (char *) scsi_cmnd->cmnd, scsi_cmnd->cmd_len); | |
3635 | ||
3636 | /* | |
3637 | * start QDIO request for this FSF request | |
3638 | * covered by an SBALE) | |
3639 | */ | |
3640 | retval = zfcp_fsf_req_send(fsf_req, timer); | |
3641 | if (unlikely(retval < 0)) { | |
3642 | ZFCP_LOG_INFO("error: Could not send FCP command request " | |
3643 | "on adapter %s, port 0x%016Lx, unit 0x%016Lx\n", | |
3644 | zfcp_get_busid_by_adapter(adapter), | |
3645 | unit->port->wwpn, | |
3646 | unit->fcp_lun); | |
3647 | goto send_failed; | |
3648 | } | |
3649 | ||
3650 | ZFCP_LOG_TRACE("Send FCP Command initiated (adapter %s, " | |
3651 | "port 0x%016Lx, unit 0x%016Lx)\n", | |
3652 | zfcp_get_busid_by_adapter(adapter), | |
3653 | unit->port->wwpn, | |
3654 | unit->fcp_lun); | |
3655 | goto success; | |
3656 | ||
3657 | send_failed: | |
3658 | no_fit: | |
3659 | failed_scsi_cmnd: | |
059c97d0 | 3660 | zfcp_unit_put(unit); |
1da177e4 LT |
3661 | zfcp_fsf_req_free(fsf_req); |
3662 | fsf_req = NULL; | |
3663 | scsi_cmnd->host_scribble = NULL; | |
3664 | success: | |
3665 | failed_req_create: | |
3666 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
3667 | return retval; | |
3668 | } | |
3669 | ||
3670 | /* | |
3671 | * function: zfcp_fsf_send_fcp_command_task_management | |
3672 | * | |
3673 | * purpose: | |
3674 | * | |
3675 | * returns: | |
3676 | * | |
3677 | * FIXME(design): should be watched by a timeout!!! | |
3678 | * FIXME(design) shouldn't this be modified to return an int | |
3679 | * also...don't know how though | |
3680 | * | |
3681 | */ | |
3682 | struct zfcp_fsf_req * | |
3683 | zfcp_fsf_send_fcp_command_task_management(struct zfcp_adapter *adapter, | |
3684 | struct zfcp_unit *unit, | |
3685 | u8 tm_flags, int req_flags) | |
3686 | { | |
3687 | struct zfcp_fsf_req *fsf_req = NULL; | |
3688 | int retval = 0; | |
3689 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
3690 | unsigned long lock_flags; | |
3691 | volatile struct qdio_buffer_element *sbale; | |
3692 | ||
3693 | /* setup new FSF request */ | |
3694 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, | |
3695 | adapter->pool.fsf_req_scsi, | |
3696 | &lock_flags, &fsf_req); | |
3697 | if (retval < 0) { | |
3698 | ZFCP_LOG_INFO("error: Could not create FCP command (task " | |
3699 | "management) request for adapter %s, port " | |
3700 | " 0x%016Lx, unit 0x%016Lx.\n", | |
3701 | zfcp_get_busid_by_adapter(adapter), | |
3702 | unit->port->wwpn, unit->fcp_lun); | |
3703 | goto out; | |
3704 | } | |
3705 | ||
3706 | /* | |
3707 | * Used to decide on proper handler in the return path, | |
3708 | * could be either zfcp_fsf_send_fcp_command_task_handler or | |
3709 | * zfcp_fsf_send_fcp_command_task_management_handler */ | |
3710 | ||
3711 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT; | |
3712 | ||
3713 | /* | |
3714 | * hold a pointer to the unit being target of this | |
3715 | * task management request | |
3716 | */ | |
059c97d0 | 3717 | fsf_req->data = (unsigned long) unit; |
1da177e4 LT |
3718 | |
3719 | /* set FSF related fields in QTCB */ | |
3720 | fsf_req->qtcb->header.lun_handle = unit->handle; | |
3721 | fsf_req->qtcb->header.port_handle = unit->port->handle; | |
3722 | fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
3723 | fsf_req->qtcb->bottom.io.service_class = adapter->fc_service_class; | |
3724 | fsf_req->qtcb->bottom.io.fcp_cmnd_length = | |
3725 | sizeof (struct fcp_cmnd_iu) + sizeof (fcp_dl_t); | |
3726 | ||
3727 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
3728 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE; | |
3729 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
3730 | ||
3731 | /* set FCP related fields in FCP_CMND IU in QTCB */ | |
3732 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) | |
3733 | &(fsf_req->qtcb->bottom.io.fcp_cmnd); | |
3734 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
3735 | fcp_cmnd_iu->task_management_flags = tm_flags; | |
3736 | ||
3737 | /* start QDIO request for this FSF request */ | |
3738 | zfcp_fsf_start_scsi_er_timer(adapter); | |
3739 | retval = zfcp_fsf_req_send(fsf_req, NULL); | |
3740 | if (retval) { | |
3741 | del_timer(&adapter->scsi_er_timer); | |
3742 | ZFCP_LOG_INFO("error: Could not send an FCP-command (task " | |
3743 | "management) on adapter %s, port 0x%016Lx for " | |
3744 | "unit LUN 0x%016Lx\n", | |
3745 | zfcp_get_busid_by_adapter(adapter), | |
3746 | unit->port->wwpn, | |
3747 | unit->fcp_lun); | |
3748 | zfcp_fsf_req_free(fsf_req); | |
3749 | fsf_req = NULL; | |
3750 | goto out; | |
3751 | } | |
3752 | ||
3753 | ZFCP_LOG_TRACE("Send FCP Command (task management function) initiated " | |
3754 | "(adapter %s, port 0x%016Lx, unit 0x%016Lx, " | |
3755 | "tm_flags=0x%x)\n", | |
3756 | zfcp_get_busid_by_adapter(adapter), | |
3757 | unit->port->wwpn, | |
3758 | unit->fcp_lun, | |
3759 | tm_flags); | |
3760 | out: | |
3761 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
3762 | return fsf_req; | |
3763 | } | |
3764 | ||
3765 | /* | |
3766 | * function: zfcp_fsf_send_fcp_command_handler | |
3767 | * | |
3768 | * purpose: is called for finished Send FCP Command | |
3769 | * | |
3770 | * returns: | |
3771 | */ | |
3772 | static int | |
3773 | zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *fsf_req) | |
3774 | { | |
3775 | int retval = -EINVAL; | |
3776 | struct zfcp_unit *unit; | |
3777 | struct fsf_qtcb_header *header; | |
3778 | u16 subtable, rule, counter; | |
3779 | ||
3780 | header = &fsf_req->qtcb->header; | |
3781 | ||
3782 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)) | |
059c97d0 | 3783 | unit = (struct zfcp_unit *) fsf_req->data; |
1da177e4 | 3784 | else |
059c97d0 | 3785 | unit = fsf_req->unit; |
1da177e4 LT |
3786 | |
3787 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
3788 | /* go directly to calls of special handlers */ | |
3789 | goto skip_fsfstatus; | |
3790 | } | |
3791 | ||
3792 | /* evaluate FSF status in QTCB */ | |
3793 | switch (header->fsf_status) { | |
3794 | ||
3795 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
3796 | ZFCP_LOG_INFO("Temporary port identifier 0x%x for port " |
3797 | "0x%016Lx on adapter %s invalid\n", | |
3798 | unit->port->handle, | |
3799 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3800 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3801 | (char *) &header->fsf_status_qual, | |
3802 | sizeof (union fsf_status_qual)); | |
3803 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3804 | "fsf_s_phand_nv"); | |
3805 | zfcp_erp_adapter_reopen(unit->port->adapter, 0); | |
3806 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3807 | break; | |
3808 | ||
3809 | case FSF_LUN_HANDLE_NOT_VALID: | |
1da177e4 LT |
3810 | ZFCP_LOG_INFO("Temporary LUN identifier 0x%x for unit " |
3811 | "0x%016Lx on port 0x%016Lx on adapter %s is " | |
3812 | "invalid. This may happen occasionally.\n", | |
3813 | unit->handle, | |
3814 | unit->fcp_lun, | |
3815 | unit->port->wwpn, | |
3816 | zfcp_get_busid_by_unit(unit)); | |
3817 | ZFCP_LOG_NORMAL("Status qualifier data:\n"); | |
3818 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL, | |
3819 | (char *) &header->fsf_status_qual, | |
3820 | sizeof (union fsf_status_qual)); | |
3821 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3822 | "fsf_s_uhand_nv"); | |
3823 | zfcp_erp_port_reopen(unit->port, 0); | |
3824 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3825 | break; | |
3826 | ||
3827 | case FSF_HANDLE_MISMATCH: | |
1da177e4 LT |
3828 | ZFCP_LOG_NORMAL("bug: The port handle 0x%x has changed " |
3829 | "unexpectedly. (adapter %s, port 0x%016Lx, " | |
3830 | "unit 0x%016Lx)\n", | |
3831 | unit->port->handle, | |
3832 | zfcp_get_busid_by_unit(unit), | |
3833 | unit->port->wwpn, | |
3834 | unit->fcp_lun); | |
3835 | ZFCP_LOG_NORMAL("status qualifier:\n"); | |
3836 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL, | |
3837 | (char *) &header->fsf_status_qual, | |
3838 | sizeof (union fsf_status_qual)); | |
3839 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3840 | "fsf_s_hand_mis"); | |
3841 | zfcp_erp_adapter_reopen(unit->port->adapter, 0); | |
1da177e4 LT |
3842 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3843 | break; | |
3844 | ||
3845 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: | |
1da177e4 LT |
3846 | if (fsf_req->adapter->fc_service_class <= 3) { |
3847 | ZFCP_LOG_NORMAL("error: The adapter %s does " | |
3848 | "not support fibrechannel class %d.\n", | |
3849 | zfcp_get_busid_by_unit(unit), | |
3850 | fsf_req->adapter->fc_service_class); | |
3851 | } else { | |
3852 | ZFCP_LOG_NORMAL("bug: The fibrechannel class at " | |
3853 | "adapter %s is invalid. " | |
3854 | "(debug info %d)\n", | |
3855 | zfcp_get_busid_by_unit(unit), | |
3856 | fsf_req->adapter->fc_service_class); | |
3857 | } | |
3858 | /* stop operation for this adapter */ | |
3859 | debug_text_exception(fsf_req->adapter->erp_dbf, 0, | |
3860 | "fsf_s_class_nsup"); | |
3861 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0); | |
1da177e4 LT |
3862 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3863 | break; | |
3864 | ||
3865 | case FSF_FCPLUN_NOT_VALID: | |
1da177e4 LT |
3866 | ZFCP_LOG_NORMAL("bug: unit 0x%016Lx on port 0x%016Lx on " |
3867 | "adapter %s does not have correct unit " | |
3868 | "handle 0x%x\n", | |
3869 | unit->fcp_lun, | |
3870 | unit->port->wwpn, | |
3871 | zfcp_get_busid_by_unit(unit), | |
3872 | unit->handle); | |
3873 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
3874 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3875 | (char *) &header->fsf_status_qual, | |
3876 | sizeof (union fsf_status_qual)); | |
3877 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3878 | "fsf_s_fcp_lun_nv"); | |
3879 | zfcp_erp_port_reopen(unit->port, 0); | |
1da177e4 LT |
3880 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3881 | break; | |
3882 | ||
3883 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
3884 | ZFCP_LOG_NORMAL("Access denied, cannot send FCP command to " |
3885 | "unit 0x%016Lx on port 0x%016Lx on " | |
3886 | "adapter %s\n", unit->fcp_lun, unit->port->wwpn, | |
3887 | zfcp_get_busid_by_unit(unit)); | |
3888 | for (counter = 0; counter < 2; counter++) { | |
3889 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
3890 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
3891 | switch (subtable) { | |
3892 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
3893 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
3894 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
3895 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
3896 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
3897 | zfcp_act_subtable_type[subtable], rule); | |
3898 | break; | |
3899 | } | |
3900 | } | |
3901 | debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_access"); | |
3902 | zfcp_erp_unit_access_denied(unit); | |
3903 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3904 | break; | |
3905 | ||
3906 | case FSF_DIRECTION_INDICATOR_NOT_VALID: | |
1da177e4 LT |
3907 | ZFCP_LOG_INFO("bug: Invalid data direction given for unit " |
3908 | "0x%016Lx on port 0x%016Lx on adapter %s " | |
3909 | "(debug info %d)\n", | |
3910 | unit->fcp_lun, | |
3911 | unit->port->wwpn, | |
3912 | zfcp_get_busid_by_unit(unit), | |
3913 | fsf_req->qtcb->bottom.io.data_direction); | |
3914 | /* stop operation for this adapter */ | |
3915 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
3916 | "fsf_s_dir_ind_nv"); | |
3917 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0); | |
1da177e4 LT |
3918 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3919 | break; | |
3920 | ||
3921 | case FSF_CMND_LENGTH_NOT_VALID: | |
1da177e4 LT |
3922 | ZFCP_LOG_NORMAL |
3923 | ("bug: An invalid control-data-block length field " | |
3924 | "was found in a command for unit 0x%016Lx on port " | |
3925 | "0x%016Lx on adapter %s " "(debug info %d)\n", | |
3926 | unit->fcp_lun, unit->port->wwpn, | |
3927 | zfcp_get_busid_by_unit(unit), | |
3928 | fsf_req->qtcb->bottom.io.fcp_cmnd_length); | |
3929 | /* stop operation for this adapter */ | |
3930 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
3931 | "fsf_s_cmd_len_nv"); | |
3932 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0); | |
1da177e4 LT |
3933 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3934 | break; | |
3935 | ||
3936 | case FSF_PORT_BOXED: | |
1da177e4 LT |
3937 | ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s " |
3938 | "needs to be reopened\n", | |
3939 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3940 | debug_text_event(fsf_req->adapter->erp_dbf, 2, "fsf_s_pboxed"); | |
d736a27b | 3941 | zfcp_erp_port_boxed(unit->port); |
1da177e4 LT |
3942 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
3943 | ZFCP_STATUS_FSFREQ_RETRY; | |
3944 | break; | |
3945 | ||
3946 | case FSF_LUN_BOXED: | |
1da177e4 LT |
3947 | ZFCP_LOG_NORMAL("unit needs to be reopened (adapter %s, " |
3948 | "wwpn=0x%016Lx, fcp_lun=0x%016Lx)\n", | |
3949 | zfcp_get_busid_by_unit(unit), | |
3950 | unit->port->wwpn, unit->fcp_lun); | |
3951 | debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_lboxed"); | |
d736a27b | 3952 | zfcp_erp_unit_boxed(unit); |
1da177e4 LT |
3953 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
3954 | | ZFCP_STATUS_FSFREQ_RETRY; | |
3955 | break; | |
3956 | ||
3957 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
3958 | switch (header->fsf_status_qual.word[0]) { |
3959 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
3960 | /* re-establish link to port */ |
3961 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3962 | "fsf_sq_ltest"); | |
65a8d4e1 | 3963 | zfcp_test_link(unit->port); |
1da177e4 LT |
3964 | break; |
3965 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
3966 | /* FIXME(hw) need proper specs for proper action */ |
3967 | /* let scsi stack deal with retries and escalation */ | |
3968 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3969 | "fsf_sq_ulp"); | |
1da177e4 LT |
3970 | break; |
3971 | default: | |
1da177e4 | 3972 | ZFCP_LOG_NORMAL |
516a4201 | 3973 | ("Unknown status qualifier 0x%x arrived.\n", |
1da177e4 LT |
3974 | header->fsf_status_qual.word[0]); |
3975 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
3976 | "fsf_sq_inval:"); | |
3977 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
3978 | &header->fsf_status_qual.word[0], | |
3979 | sizeof(u32)); | |
3980 | break; | |
3981 | } | |
516a4201 | 3982 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
3983 | break; |
3984 | ||
3985 | case FSF_GOOD: | |
1da177e4 LT |
3986 | break; |
3987 | ||
3988 | case FSF_FCP_RSP_AVAILABLE: | |
1da177e4 LT |
3989 | break; |
3990 | ||
3991 | default: | |
3992 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:"); | |
3993 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
3994 | &header->fsf_status, sizeof(u32)); | |
3995 | break; | |
3996 | } | |
3997 | ||
3998 | skip_fsfstatus: | |
3999 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT) { | |
4000 | retval = | |
4001 | zfcp_fsf_send_fcp_command_task_management_handler(fsf_req); | |
4002 | } else { | |
4003 | retval = zfcp_fsf_send_fcp_command_task_handler(fsf_req); | |
059c97d0 AH |
4004 | fsf_req->unit = NULL; |
4005 | zfcp_unit_put(unit); | |
1da177e4 LT |
4006 | } |
4007 | return retval; | |
4008 | } | |
4009 | ||
4010 | /* | |
4011 | * function: zfcp_fsf_send_fcp_command_task_handler | |
4012 | * | |
4013 | * purpose: evaluates FCP_RSP IU | |
4014 | * | |
4015 | * returns: | |
4016 | */ | |
4017 | static int | |
4018 | zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *fsf_req) | |
4019 | { | |
4020 | int retval = 0; | |
4021 | struct scsi_cmnd *scpnt; | |
4022 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) | |
4023 | &(fsf_req->qtcb->bottom.io.fcp_rsp); | |
4024 | struct fcp_cmnd_iu *fcp_cmnd_iu = (struct fcp_cmnd_iu *) | |
4025 | &(fsf_req->qtcb->bottom.io.fcp_cmnd); | |
4026 | u32 sns_len; | |
4027 | char *fcp_rsp_info = zfcp_get_fcp_rsp_info_ptr(fcp_rsp_iu); | |
4028 | unsigned long flags; | |
059c97d0 | 4029 | struct zfcp_unit *unit = fsf_req->unit; |
1da177e4 LT |
4030 | |
4031 | read_lock_irqsave(&fsf_req->adapter->abort_lock, flags); | |
059c97d0 | 4032 | scpnt = (struct scsi_cmnd *) fsf_req->data; |
1da177e4 LT |
4033 | if (unlikely(!scpnt)) { |
4034 | ZFCP_LOG_DEBUG | |
4035 | ("Command with fsf_req %p is not associated to " | |
4036 | "a scsi command anymore. Aborted?\n", fsf_req); | |
4037 | goto out; | |
4038 | } | |
4039 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ABORTED)) { | |
4040 | /* FIXME: (design) mid-layer should handle DID_ABORT like | |
4041 | * DID_SOFT_ERROR by retrying the request for devices | |
4042 | * that allow retries. | |
4043 | */ | |
4044 | ZFCP_LOG_DEBUG("Setting DID_SOFT_ERROR and SUGGEST_RETRY\n"); | |
4045 | set_host_byte(&scpnt->result, DID_SOFT_ERROR); | |
4046 | set_driver_byte(&scpnt->result, SUGGEST_RETRY); | |
4047 | goto skip_fsfstatus; | |
4048 | } | |
4049 | ||
4050 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
4051 | ZFCP_LOG_DEBUG("Setting DID_ERROR\n"); | |
4052 | set_host_byte(&scpnt->result, DID_ERROR); | |
4053 | goto skip_fsfstatus; | |
4054 | } | |
4055 | ||
4056 | /* set message byte of result in SCSI command */ | |
4057 | scpnt->result |= COMMAND_COMPLETE << 8; | |
4058 | ||
4059 | /* | |
4060 | * copy SCSI status code of FCP_STATUS of FCP_RSP IU to status byte | |
4061 | * of result in SCSI command | |
4062 | */ | |
4063 | scpnt->result |= fcp_rsp_iu->scsi_status; | |
4064 | if (unlikely(fcp_rsp_iu->scsi_status)) { | |
4065 | /* DEBUG */ | |
4066 | ZFCP_LOG_DEBUG("status for SCSI Command:\n"); | |
4067 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4068 | scpnt->cmnd, scpnt->cmd_len); | |
4069 | ZFCP_LOG_DEBUG("SCSI status code 0x%x\n", | |
4070 | fcp_rsp_iu->scsi_status); | |
4071 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4072 | (void *) fcp_rsp_iu, sizeof (struct fcp_rsp_iu)); | |
4073 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4074 | zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), | |
4075 | fcp_rsp_iu->fcp_sns_len); | |
4076 | } | |
4077 | ||
4078 | /* check FCP_RSP_INFO */ | |
4079 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) { | |
4080 | ZFCP_LOG_DEBUG("rsp_len is valid\n"); | |
4081 | switch (fcp_rsp_info[3]) { | |
4082 | case RSP_CODE_GOOD: | |
1da177e4 LT |
4083 | /* ok, continue */ |
4084 | ZFCP_LOG_TRACE("no failure or Task Management " | |
4085 | "Function complete\n"); | |
4086 | set_host_byte(&scpnt->result, DID_OK); | |
4087 | break; | |
4088 | case RSP_CODE_LENGTH_MISMATCH: | |
1da177e4 LT |
4089 | /* hardware bug */ |
4090 | ZFCP_LOG_NORMAL("bug: FCP response code indictates " | |
4091 | "that the fibrechannel protocol data " | |
4092 | "length differs from the burst length. " | |
4093 | "The problem occured on unit 0x%016Lx " | |
4094 | "on port 0x%016Lx on adapter %s", | |
4095 | unit->fcp_lun, | |
4096 | unit->port->wwpn, | |
4097 | zfcp_get_busid_by_unit(unit)); | |
4098 | /* dump SCSI CDB as prepared by zfcp */ | |
4099 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4100 | (char *) &fsf_req->qtcb-> | |
4101 | bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE); | |
1da177e4 LT |
4102 | set_host_byte(&scpnt->result, DID_ERROR); |
4103 | goto skip_fsfstatus; | |
4104 | case RSP_CODE_FIELD_INVALID: | |
1da177e4 LT |
4105 | /* driver or hardware bug */ |
4106 | ZFCP_LOG_NORMAL("bug: FCP response code indictates " | |
4107 | "that the fibrechannel protocol data " | |
4108 | "fields were incorrectly set up. " | |
4109 | "The problem occured on the unit " | |
4110 | "0x%016Lx on port 0x%016Lx on " | |
4111 | "adapter %s", | |
4112 | unit->fcp_lun, | |
4113 | unit->port->wwpn, | |
4114 | zfcp_get_busid_by_unit(unit)); | |
4115 | /* dump SCSI CDB as prepared by zfcp */ | |
4116 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4117 | (char *) &fsf_req->qtcb-> | |
4118 | bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE); | |
4119 | set_host_byte(&scpnt->result, DID_ERROR); | |
1da177e4 LT |
4120 | goto skip_fsfstatus; |
4121 | case RSP_CODE_RO_MISMATCH: | |
1da177e4 LT |
4122 | /* hardware bug */ |
4123 | ZFCP_LOG_NORMAL("bug: The FCP response code indicates " | |
4124 | "that conflicting values for the " | |
4125 | "fibrechannel payload offset from the " | |
4126 | "header were found. " | |
4127 | "The problem occured on unit 0x%016Lx " | |
4128 | "on port 0x%016Lx on adapter %s.\n", | |
4129 | unit->fcp_lun, | |
4130 | unit->port->wwpn, | |
4131 | zfcp_get_busid_by_unit(unit)); | |
4132 | /* dump SCSI CDB as prepared by zfcp */ | |
4133 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4134 | (char *) &fsf_req->qtcb-> | |
4135 | bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE); | |
1da177e4 LT |
4136 | set_host_byte(&scpnt->result, DID_ERROR); |
4137 | goto skip_fsfstatus; | |
4138 | default: | |
4139 | ZFCP_LOG_NORMAL("bug: An invalid FCP response " | |
4140 | "code was detected for a command. " | |
4141 | "The problem occured on the unit " | |
4142 | "0x%016Lx on port 0x%016Lx on " | |
4143 | "adapter %s (debug info 0x%x)\n", | |
4144 | unit->fcp_lun, | |
4145 | unit->port->wwpn, | |
4146 | zfcp_get_busid_by_unit(unit), | |
4147 | fcp_rsp_info[3]); | |
4148 | /* dump SCSI CDB as prepared by zfcp */ | |
4149 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4150 | (char *) &fsf_req->qtcb-> | |
4151 | bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE); | |
1da177e4 | 4152 | set_host_byte(&scpnt->result, DID_ERROR); |
6f71d9bc | 4153 | goto skip_fsfstatus; |
1da177e4 LT |
4154 | } |
4155 | } | |
4156 | ||
4157 | /* check for sense data */ | |
4158 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_sns_len_valid)) { | |
4159 | sns_len = FSF_FCP_RSP_SIZE - | |
4160 | sizeof (struct fcp_rsp_iu) + fcp_rsp_iu->fcp_rsp_len; | |
4161 | ZFCP_LOG_TRACE("room for %i bytes sense data in QTCB\n", | |
4162 | sns_len); | |
4163 | sns_len = min(sns_len, (u32) SCSI_SENSE_BUFFERSIZE); | |
4164 | ZFCP_LOG_TRACE("room for %i bytes sense data in SCSI command\n", | |
4165 | SCSI_SENSE_BUFFERSIZE); | |
4166 | sns_len = min(sns_len, fcp_rsp_iu->fcp_sns_len); | |
4167 | ZFCP_LOG_TRACE("scpnt->result =0x%x, command was:\n", | |
4168 | scpnt->result); | |
4169 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, | |
4170 | (void *) &scpnt->cmnd, scpnt->cmd_len); | |
4171 | ||
4172 | ZFCP_LOG_TRACE("%i bytes sense data provided by FCP\n", | |
4173 | fcp_rsp_iu->fcp_sns_len); | |
4174 | memcpy(&scpnt->sense_buffer, | |
4175 | zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len); | |
4176 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, | |
4177 | (void *) &scpnt->sense_buffer, sns_len); | |
4178 | } | |
4179 | ||
4180 | /* check for overrun */ | |
4181 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_over)) { | |
4182 | ZFCP_LOG_INFO("A data overrun was detected for a command. " | |
4183 | "unit 0x%016Lx, port 0x%016Lx, adapter %s. " | |
4184 | "The response data length is " | |
4185 | "%d, the original length was %d.\n", | |
4186 | unit->fcp_lun, | |
4187 | unit->port->wwpn, | |
4188 | zfcp_get_busid_by_unit(unit), | |
4189 | fcp_rsp_iu->fcp_resid, | |
4190 | (int) zfcp_get_fcp_dl(fcp_cmnd_iu)); | |
4191 | } | |
4192 | ||
4193 | /* check for underrun */ | |
4194 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_under)) { | |
4195 | ZFCP_LOG_INFO("A data underrun was detected for a command. " | |
4196 | "unit 0x%016Lx, port 0x%016Lx, adapter %s. " | |
4197 | "The response data length is " | |
4198 | "%d, the original length was %d.\n", | |
4199 | unit->fcp_lun, | |
4200 | unit->port->wwpn, | |
4201 | zfcp_get_busid_by_unit(unit), | |
4202 | fcp_rsp_iu->fcp_resid, | |
4203 | (int) zfcp_get_fcp_dl(fcp_cmnd_iu)); | |
4204 | ||
4205 | scpnt->resid = fcp_rsp_iu->fcp_resid; | |
4206 | if (scpnt->request_bufflen - scpnt->resid < scpnt->underflow) | |
6f71d9bc | 4207 | set_host_byte(&scpnt->result, DID_ERROR); |
1da177e4 LT |
4208 | } |
4209 | ||
4210 | skip_fsfstatus: | |
4211 | ZFCP_LOG_DEBUG("scpnt->result =0x%x\n", scpnt->result); | |
4212 | ||
8a36e453 | 4213 | if (scpnt->result != 0) |
ed829ad6 | 4214 | zfcp_scsi_dbf_event_result("erro", 3, fsf_req->adapter, scpnt, fsf_req); |
8a36e453 | 4215 | else if (scpnt->retries > 0) |
ed829ad6 | 4216 | zfcp_scsi_dbf_event_result("retr", 4, fsf_req->adapter, scpnt, fsf_req); |
8a36e453 | 4217 | else |
ed829ad6 | 4218 | zfcp_scsi_dbf_event_result("norm", 6, fsf_req->adapter, scpnt, fsf_req); |
1da177e4 LT |
4219 | |
4220 | /* cleanup pointer (need this especially for abort) */ | |
4221 | scpnt->host_scribble = NULL; | |
4222 | ||
1da177e4 | 4223 | /* always call back */ |
1da177e4 LT |
4224 | (scpnt->scsi_done) (scpnt); |
4225 | ||
4226 | /* | |
4227 | * We must hold this lock until scsi_done has been called. | |
4228 | * Otherwise we may call scsi_done after abort regarding this | |
4229 | * command has completed. | |
4230 | * Note: scsi_done must not block! | |
4231 | */ | |
4232 | out: | |
4233 | read_unlock_irqrestore(&fsf_req->adapter->abort_lock, flags); | |
4234 | return retval; | |
4235 | } | |
4236 | ||
4237 | /* | |
4238 | * function: zfcp_fsf_send_fcp_command_task_management_handler | |
4239 | * | |
4240 | * purpose: evaluates FCP_RSP IU | |
4241 | * | |
4242 | * returns: | |
4243 | */ | |
4244 | static int | |
4245 | zfcp_fsf_send_fcp_command_task_management_handler(struct zfcp_fsf_req *fsf_req) | |
4246 | { | |
4247 | int retval = 0; | |
4248 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) | |
4249 | &(fsf_req->qtcb->bottom.io.fcp_rsp); | |
4250 | char *fcp_rsp_info = zfcp_get_fcp_rsp_info_ptr(fcp_rsp_iu); | |
059c97d0 | 4251 | struct zfcp_unit *unit = (struct zfcp_unit *) fsf_req->data; |
1da177e4 LT |
4252 | |
4253 | del_timer(&fsf_req->adapter->scsi_er_timer); | |
4254 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
4255 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
4256 | goto skip_fsfstatus; | |
4257 | } | |
4258 | ||
4259 | /* check FCP_RSP_INFO */ | |
4260 | switch (fcp_rsp_info[3]) { | |
4261 | case RSP_CODE_GOOD: | |
1da177e4 LT |
4262 | /* ok, continue */ |
4263 | ZFCP_LOG_DEBUG("no failure or Task Management " | |
4264 | "Function complete\n"); | |
4265 | break; | |
4266 | case RSP_CODE_TASKMAN_UNSUPP: | |
1da177e4 LT |
4267 | ZFCP_LOG_NORMAL("bug: A reuested task management function " |
4268 | "is not supported on the target device " | |
4269 | "unit 0x%016Lx, port 0x%016Lx, adapter %s\n ", | |
4270 | unit->fcp_lun, | |
4271 | unit->port->wwpn, | |
4272 | zfcp_get_busid_by_unit(unit)); | |
4273 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP; | |
4274 | break; | |
4275 | case RSP_CODE_TASKMAN_FAILED: | |
1da177e4 LT |
4276 | ZFCP_LOG_NORMAL("bug: A reuested task management function " |
4277 | "failed to complete successfully. " | |
4278 | "unit 0x%016Lx, port 0x%016Lx, adapter %s.\n", | |
4279 | unit->fcp_lun, | |
4280 | unit->port->wwpn, | |
4281 | zfcp_get_busid_by_unit(unit)); | |
4282 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
4283 | break; | |
4284 | default: | |
4285 | ZFCP_LOG_NORMAL("bug: An invalid FCP response " | |
4286 | "code was detected for a command. " | |
4287 | "unit 0x%016Lx, port 0x%016Lx, adapter %s " | |
4288 | "(debug info 0x%x)\n", | |
4289 | unit->fcp_lun, | |
4290 | unit->port->wwpn, | |
4291 | zfcp_get_busid_by_unit(unit), | |
4292 | fcp_rsp_info[3]); | |
4293 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
4294 | } | |
4295 | ||
4296 | skip_fsfstatus: | |
4297 | return retval; | |
4298 | } | |
4299 | ||
4300 | ||
4301 | /* | |
4302 | * function: zfcp_fsf_control_file | |
4303 | * | |
4304 | * purpose: Initiator of the control file upload/download FSF requests | |
4305 | * | |
4306 | * returns: 0 - FSF request is successfuly created and queued | |
4307 | * -EOPNOTSUPP - The FCP adapter does not have Control File support | |
4308 | * -EINVAL - Invalid direction specified | |
4309 | * -ENOMEM - Insufficient memory | |
4310 | * -EPERM - Cannot create FSF request or place it in QDIO queue | |
4311 | */ | |
4312 | int | |
4313 | zfcp_fsf_control_file(struct zfcp_adapter *adapter, | |
4314 | struct zfcp_fsf_req **fsf_req_ptr, | |
4315 | u32 fsf_command, | |
4316 | u32 option, | |
4317 | struct zfcp_sg_list *sg_list) | |
4318 | { | |
4319 | struct zfcp_fsf_req *fsf_req; | |
4320 | struct fsf_qtcb_bottom_support *bottom; | |
4321 | volatile struct qdio_buffer_element *sbale; | |
4322 | struct timer_list *timer; | |
4323 | unsigned long lock_flags; | |
4324 | int req_flags = 0; | |
4325 | int direction; | |
4326 | int retval = 0; | |
4327 | ||
aef4a983 | 4328 | if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) { |
1da177e4 LT |
4329 | ZFCP_LOG_INFO("cfdc not supported (adapter %s)\n", |
4330 | zfcp_get_busid_by_adapter(adapter)); | |
4331 | retval = -EOPNOTSUPP; | |
4332 | goto out; | |
4333 | } | |
4334 | ||
4335 | switch (fsf_command) { | |
4336 | ||
4337 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
4338 | direction = SBAL_FLAGS0_TYPE_WRITE; | |
4339 | if ((option != FSF_CFDC_OPTION_FULL_ACCESS) && | |
4340 | (option != FSF_CFDC_OPTION_RESTRICTED_ACCESS)) | |
4341 | req_flags = ZFCP_WAIT_FOR_SBAL; | |
4342 | break; | |
4343 | ||
4344 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
4345 | direction = SBAL_FLAGS0_TYPE_READ; | |
4346 | break; | |
4347 | ||
4348 | default: | |
4349 | ZFCP_LOG_INFO("Invalid FSF command code 0x%08x\n", fsf_command); | |
4350 | retval = -EINVAL; | |
4351 | goto out; | |
4352 | } | |
4353 | ||
4354 | timer = kmalloc(sizeof(struct timer_list), GFP_KERNEL); | |
4355 | if (!timer) { | |
4356 | retval = -ENOMEM; | |
4357 | goto out; | |
4358 | } | |
4359 | ||
4360 | retval = zfcp_fsf_req_create(adapter, fsf_command, req_flags, | |
4361 | NULL, &lock_flags, &fsf_req); | |
4362 | if (retval < 0) { | |
4363 | ZFCP_LOG_INFO("error: Could not create FSF request for the " | |
4364 | "adapter %s\n", | |
4365 | zfcp_get_busid_by_adapter(adapter)); | |
4366 | retval = -EPERM; | |
4367 | goto unlock_queue_lock; | |
4368 | } | |
4369 | ||
4370 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
4371 | sbale[0].flags |= direction; | |
4372 | ||
4373 | bottom = &fsf_req->qtcb->bottom.support; | |
4374 | bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE; | |
4375 | bottom->option = option; | |
4376 | ||
4377 | if (sg_list->count > 0) { | |
4378 | int bytes; | |
4379 | ||
4380 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, direction, | |
4381 | sg_list->sg, sg_list->count, | |
4382 | ZFCP_MAX_SBALS_PER_REQ); | |
4383 | if (bytes != ZFCP_CFDC_MAX_CONTROL_FILE_SIZE) { | |
4384 | ZFCP_LOG_INFO( | |
4385 | "error: Could not create sufficient number of " | |
4386 | "SBALS for an FSF request to the adapter %s\n", | |
4387 | zfcp_get_busid_by_adapter(adapter)); | |
4388 | retval = -ENOMEM; | |
4389 | goto free_fsf_req; | |
4390 | } | |
4391 | } else | |
4392 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
4393 | ||
4394 | init_timer(timer); | |
4395 | timer->function = zfcp_fsf_request_timeout_handler; | |
4396 | timer->data = (unsigned long) adapter; | |
4397 | timer->expires = ZFCP_FSF_REQUEST_TIMEOUT; | |
4398 | ||
4399 | retval = zfcp_fsf_req_send(fsf_req, timer); | |
4400 | if (retval < 0) { | |
4401 | ZFCP_LOG_INFO("initiation of cfdc up/download failed" | |
4402 | "(adapter %s)\n", | |
4403 | zfcp_get_busid_by_adapter(adapter)); | |
4404 | retval = -EPERM; | |
4405 | goto free_fsf_req; | |
4406 | } | |
4407 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
4408 | ||
4409 | ZFCP_LOG_NORMAL("Control file %s FSF request has been sent to the " | |
4410 | "adapter %s\n", | |
4411 | fsf_command == FSF_QTCB_DOWNLOAD_CONTROL_FILE ? | |
4412 | "download" : "upload", | |
4413 | zfcp_get_busid_by_adapter(adapter)); | |
4414 | ||
4415 | wait_event(fsf_req->completion_wq, | |
4416 | fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
4417 | ||
4418 | *fsf_req_ptr = fsf_req; | |
4419 | del_timer_sync(timer); | |
4420 | goto free_timer; | |
4421 | ||
4422 | free_fsf_req: | |
4423 | zfcp_fsf_req_free(fsf_req); | |
4424 | unlock_queue_lock: | |
4425 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
4426 | free_timer: | |
4427 | kfree(timer); | |
4428 | out: | |
4429 | return retval; | |
4430 | } | |
4431 | ||
4432 | ||
4433 | /* | |
4434 | * function: zfcp_fsf_control_file_handler | |
4435 | * | |
4436 | * purpose: Handler of the control file upload/download FSF requests | |
4437 | * | |
4438 | * returns: 0 - FSF request successfuly processed | |
4439 | * -EAGAIN - Operation has to be repeated because of a temporary problem | |
4440 | * -EACCES - There is no permission to execute an operation | |
4441 | * -EPERM - The control file is not in a right format | |
4442 | * -EIO - There is a problem with the FCP adapter | |
4443 | * -EINVAL - Invalid operation | |
4444 | * -EFAULT - User space memory I/O operation fault | |
4445 | */ | |
4446 | static int | |
4447 | zfcp_fsf_control_file_handler(struct zfcp_fsf_req *fsf_req) | |
4448 | { | |
4449 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
4450 | struct fsf_qtcb_header *header = &fsf_req->qtcb->header; | |
4451 | struct fsf_qtcb_bottom_support *bottom = &fsf_req->qtcb->bottom.support; | |
4452 | int retval = 0; | |
4453 | ||
4454 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
4455 | retval = -EINVAL; | |
4456 | goto skip_fsfstatus; | |
4457 | } | |
4458 | ||
4459 | switch (header->fsf_status) { | |
4460 | ||
4461 | case FSF_GOOD: | |
1da177e4 LT |
4462 | ZFCP_LOG_NORMAL( |
4463 | "The FSF request has been successfully completed " | |
4464 | "on the adapter %s\n", | |
4465 | zfcp_get_busid_by_adapter(adapter)); | |
4466 | break; | |
4467 | ||
4468 | case FSF_OPERATION_PARTIALLY_SUCCESSFUL: | |
1da177e4 LT |
4469 | if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE) { |
4470 | switch (header->fsf_status_qual.word[0]) { | |
4471 | ||
6f71d9bc | 4472 | case FSF_SQ_CFDC_HARDENED_ON_SE: |
4473 | ZFCP_LOG_NORMAL( | |
4474 | "CFDC on the adapter %s has being " | |
4475 | "hardened on primary and secondary SE\n", | |
4476 | zfcp_get_busid_by_adapter(adapter)); | |
4477 | break; | |
4478 | ||
1da177e4 LT |
4479 | case FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE: |
4480 | ZFCP_LOG_NORMAL( | |
4481 | "CFDC of the adapter %s could not " | |
4482 | "be saved on the SE\n", | |
4483 | zfcp_get_busid_by_adapter(adapter)); | |
4484 | break; | |
4485 | ||
4486 | case FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE2: | |
4487 | ZFCP_LOG_NORMAL( | |
4488 | "CFDC of the adapter %s could not " | |
4489 | "be copied to the secondary SE\n", | |
4490 | zfcp_get_busid_by_adapter(adapter)); | |
4491 | break; | |
4492 | ||
4493 | default: | |
4494 | ZFCP_LOG_NORMAL( | |
4495 | "CFDC could not be hardened " | |
4496 | "on the adapter %s\n", | |
4497 | zfcp_get_busid_by_adapter(adapter)); | |
4498 | } | |
4499 | } | |
4500 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4501 | retval = -EAGAIN; | |
4502 | break; | |
4503 | ||
4504 | case FSF_AUTHORIZATION_FAILURE: | |
1da177e4 LT |
4505 | ZFCP_LOG_NORMAL( |
4506 | "Adapter %s does not accept privileged commands\n", | |
4507 | zfcp_get_busid_by_adapter(adapter)); | |
4508 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4509 | retval = -EACCES; | |
4510 | break; | |
4511 | ||
4512 | case FSF_CFDC_ERROR_DETECTED: | |
1da177e4 LT |
4513 | ZFCP_LOG_NORMAL( |
4514 | "Error at position %d in the CFDC, " | |
4515 | "CFDC is discarded by the adapter %s\n", | |
4516 | header->fsf_status_qual.word[0], | |
4517 | zfcp_get_busid_by_adapter(adapter)); | |
4518 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4519 | retval = -EPERM; | |
4520 | break; | |
4521 | ||
4522 | case FSF_CONTROL_FILE_UPDATE_ERROR: | |
1da177e4 LT |
4523 | ZFCP_LOG_NORMAL( |
4524 | "Adapter %s cannot harden the control file, " | |
4525 | "file is discarded\n", | |
4526 | zfcp_get_busid_by_adapter(adapter)); | |
4527 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4528 | retval = -EIO; | |
4529 | break; | |
4530 | ||
4531 | case FSF_CONTROL_FILE_TOO_LARGE: | |
1da177e4 LT |
4532 | ZFCP_LOG_NORMAL( |
4533 | "Control file is too large, file is discarded " | |
4534 | "by the adapter %s\n", | |
4535 | zfcp_get_busid_by_adapter(adapter)); | |
4536 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4537 | retval = -EIO; | |
4538 | break; | |
4539 | ||
4540 | case FSF_ACCESS_CONFLICT_DETECTED: | |
1da177e4 LT |
4541 | if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE) |
4542 | ZFCP_LOG_NORMAL( | |
4543 | "CFDC has been discarded by the adapter %s, " | |
4544 | "because activation would impact " | |
4545 | "%d active connection(s)\n", | |
4546 | zfcp_get_busid_by_adapter(adapter), | |
4547 | header->fsf_status_qual.word[0]); | |
4548 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4549 | retval = -EIO; | |
4550 | break; | |
4551 | ||
4552 | case FSF_CONFLICTS_OVERRULED: | |
1da177e4 LT |
4553 | if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE) |
4554 | ZFCP_LOG_NORMAL( | |
4555 | "CFDC has been activated on the adapter %s, " | |
4556 | "but activation has impacted " | |
4557 | "%d active connection(s)\n", | |
4558 | zfcp_get_busid_by_adapter(adapter), | |
4559 | header->fsf_status_qual.word[0]); | |
4560 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4561 | retval = -EIO; | |
4562 | break; | |
4563 | ||
4564 | case FSF_UNKNOWN_OP_SUBTYPE: | |
1da177e4 LT |
4565 | ZFCP_LOG_NORMAL("unknown operation subtype (adapter: %s, " |
4566 | "op_subtype=0x%x)\n", | |
4567 | zfcp_get_busid_by_adapter(adapter), | |
4568 | bottom->operation_subtype); | |
4569 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4570 | retval = -EINVAL; | |
4571 | break; | |
4572 | ||
4573 | case FSF_INVALID_COMMAND_OPTION: | |
1da177e4 LT |
4574 | ZFCP_LOG_NORMAL( |
4575 | "Invalid option 0x%x has been specified " | |
4576 | "in QTCB bottom sent to the adapter %s\n", | |
4577 | bottom->option, | |
4578 | zfcp_get_busid_by_adapter(adapter)); | |
4579 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4580 | retval = -EINVAL; | |
4581 | break; | |
4582 | ||
4583 | default: | |
4584 | ZFCP_LOG_NORMAL( | |
4585 | "bug: An unknown/unexpected FSF status 0x%08x " | |
4586 | "was presented on the adapter %s\n", | |
4587 | header->fsf_status, | |
4588 | zfcp_get_busid_by_adapter(adapter)); | |
4589 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_sq_inval"); | |
4590 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
4591 | &header->fsf_status_qual.word[0], sizeof(u32)); | |
4592 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4593 | retval = -EINVAL; | |
4594 | break; | |
4595 | } | |
4596 | ||
4597 | skip_fsfstatus: | |
4598 | return retval; | |
4599 | } | |
4600 | ||
1da177e4 LT |
4601 | static inline int |
4602 | zfcp_fsf_req_sbal_check(unsigned long *flags, | |
4603 | struct zfcp_qdio_queue *queue, int needed) | |
4604 | { | |
4605 | write_lock_irqsave(&queue->queue_lock, *flags); | |
4606 | if (likely(atomic_read(&queue->free_count) >= needed)) | |
4607 | return 1; | |
4608 | write_unlock_irqrestore(&queue->queue_lock, *flags); | |
4609 | return 0; | |
4610 | } | |
4611 | ||
4612 | /* | |
4613 | * set qtcb pointer in fsf_req and initialize QTCB | |
4614 | */ | |
4615 | static inline void | |
8a36e453 | 4616 | zfcp_fsf_req_qtcb_init(struct zfcp_fsf_req *fsf_req) |
1da177e4 LT |
4617 | { |
4618 | if (likely(fsf_req->qtcb != NULL)) { | |
8a36e453 | 4619 | fsf_req->qtcb->prefix.req_seq_no = fsf_req->adapter->fsf_req_seq_no; |
1da177e4 LT |
4620 | fsf_req->qtcb->prefix.req_id = (unsigned long)fsf_req; |
4621 | fsf_req->qtcb->prefix.ulp_info = ZFCP_ULP_INFO_VERSION; | |
8a36e453 | 4622 | fsf_req->qtcb->prefix.qtcb_type = fsf_qtcb_type[fsf_req->fsf_command]; |
1da177e4 LT |
4623 | fsf_req->qtcb->prefix.qtcb_version = ZFCP_QTCB_VERSION; |
4624 | fsf_req->qtcb->header.req_handle = (unsigned long)fsf_req; | |
8a36e453 | 4625 | fsf_req->qtcb->header.fsf_command = fsf_req->fsf_command; |
1da177e4 LT |
4626 | } |
4627 | } | |
4628 | ||
4629 | /** | |
4630 | * zfcp_fsf_req_sbal_get - try to get one SBAL in the request queue | |
4631 | * @adapter: adapter for which request queue is examined | |
4632 | * @req_flags: flags indicating whether to wait for needed SBAL or not | |
4633 | * @lock_flags: lock_flags if queue_lock is taken | |
4634 | * Return: 0 on success, otherwise -EIO, or -ERESTARTSYS | |
4635 | * Locks: lock adapter->request_queue->queue_lock on success | |
4636 | */ | |
4637 | static int | |
4638 | zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter, int req_flags, | |
4639 | unsigned long *lock_flags) | |
4640 | { | |
4641 | long ret; | |
4642 | struct zfcp_qdio_queue *req_queue = &adapter->request_queue; | |
4643 | ||
4644 | if (unlikely(req_flags & ZFCP_WAIT_FOR_SBAL)) { | |
4645 | ret = wait_event_interruptible_timeout(adapter->request_wq, | |
4646 | zfcp_fsf_req_sbal_check(lock_flags, req_queue, 1), | |
4647 | ZFCP_SBAL_TIMEOUT); | |
4648 | if (ret < 0) | |
4649 | return ret; | |
4650 | if (!ret) | |
4651 | return -EIO; | |
4652 | } else if (!zfcp_fsf_req_sbal_check(lock_flags, req_queue, 1)) | |
4653 | return -EIO; | |
4654 | ||
4655 | return 0; | |
4656 | } | |
4657 | ||
4658 | /* | |
4659 | * function: zfcp_fsf_req_create | |
4660 | * | |
4661 | * purpose: create an FSF request at the specified adapter and | |
4662 | * setup common fields | |
4663 | * | |
4664 | * returns: -ENOMEM if there was insufficient memory for a request | |
4665 | * -EIO if no qdio buffers could be allocate to the request | |
4666 | * -EINVAL/-EPERM on bug conditions in req_dequeue | |
4667 | * 0 in success | |
4668 | * | |
4669 | * note: The created request is returned by reference. | |
4670 | * | |
4671 | * locks: lock of concerned request queue must not be held, | |
4672 | * but is held on completion (write, irqsave) | |
4673 | */ | |
4674 | int | |
4675 | zfcp_fsf_req_create(struct zfcp_adapter *adapter, u32 fsf_cmd, int req_flags, | |
4676 | mempool_t *pool, unsigned long *lock_flags, | |
4677 | struct zfcp_fsf_req **fsf_req_p) | |
4678 | { | |
4679 | volatile struct qdio_buffer_element *sbale; | |
4680 | struct zfcp_fsf_req *fsf_req = NULL; | |
4681 | int ret = 0; | |
4682 | struct zfcp_qdio_queue *req_queue = &adapter->request_queue; | |
4683 | ||
4684 | /* allocate new FSF request */ | |
4685 | fsf_req = zfcp_fsf_req_alloc(pool, req_flags); | |
4686 | if (unlikely(NULL == fsf_req)) { | |
4687 | ZFCP_LOG_DEBUG("error: Could not put an FSF request into" | |
4688 | "the outbound (send) queue.\n"); | |
4689 | ret = -ENOMEM; | |
4690 | goto failed_fsf_req; | |
4691 | } | |
4692 | ||
8a36e453 MS |
4693 | fsf_req->adapter = adapter; |
4694 | fsf_req->fsf_command = fsf_cmd; | |
4695 | ||
4696 | zfcp_fsf_req_qtcb_init(fsf_req); | |
1da177e4 LT |
4697 | |
4698 | /* initialize waitqueue which may be used to wait on | |
4699 | this request completion */ | |
4700 | init_waitqueue_head(&fsf_req->completion_wq); | |
4701 | ||
4702 | ret = zfcp_fsf_req_sbal_get(adapter, req_flags, lock_flags); | |
4703 | if(ret < 0) { | |
4704 | goto failed_sbals; | |
4705 | } | |
4706 | ||
4707 | /* | |
4708 | * We hold queue_lock here. Check if QDIOUP is set and let request fail | |
4709 | * if it is not set (see also *_open_qdio and *_close_qdio). | |
4710 | */ | |
4711 | ||
4712 | if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)) { | |
4713 | write_unlock_irqrestore(&req_queue->queue_lock, *lock_flags); | |
4714 | ret = -EIO; | |
4715 | goto failed_sbals; | |
4716 | } | |
4717 | ||
8a36e453 MS |
4718 | if (fsf_req->qtcb) { |
4719 | fsf_req->seq_no = adapter->fsf_req_seq_no; | |
4720 | fsf_req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; | |
4721 | } | |
1da177e4 LT |
4722 | fsf_req->sbal_number = 1; |
4723 | fsf_req->sbal_first = req_queue->free_index; | |
4724 | fsf_req->sbal_curr = req_queue->free_index; | |
4725 | fsf_req->sbale_curr = 1; | |
4726 | ||
4727 | if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP)) { | |
4728 | fsf_req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; | |
4729 | } | |
4730 | ||
4731 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
4732 | ||
4733 | /* setup common SBALE fields */ | |
4734 | sbale[0].addr = fsf_req; | |
4735 | sbale[0].flags |= SBAL_FLAGS0_COMMAND; | |
4736 | if (likely(fsf_req->qtcb != NULL)) { | |
4737 | sbale[1].addr = (void *) fsf_req->qtcb; | |
4738 | sbale[1].length = sizeof(struct fsf_qtcb); | |
4739 | } | |
4740 | ||
4741 | ZFCP_LOG_TRACE("got %i free BUFFERs starting at index %i\n", | |
4742 | fsf_req->sbal_number, fsf_req->sbal_first); | |
4743 | ||
4744 | goto success; | |
4745 | ||
4746 | failed_sbals: | |
4747 | /* dequeue new FSF request previously enqueued */ | |
4748 | zfcp_fsf_req_free(fsf_req); | |
4749 | fsf_req = NULL; | |
4750 | ||
4751 | failed_fsf_req: | |
4752 | write_lock_irqsave(&req_queue->queue_lock, *lock_flags); | |
4753 | success: | |
4754 | *fsf_req_p = fsf_req; | |
4755 | return ret; | |
4756 | } | |
4757 | ||
4758 | /* | |
4759 | * function: zfcp_fsf_req_send | |
4760 | * | |
4761 | * purpose: start transfer of FSF request via QDIO | |
4762 | * | |
4763 | * returns: 0 - request transfer succesfully started | |
4764 | * !0 - start of request transfer failed | |
4765 | */ | |
4766 | static int | |
4767 | zfcp_fsf_req_send(struct zfcp_fsf_req *fsf_req, struct timer_list *timer) | |
4768 | { | |
4769 | struct zfcp_adapter *adapter; | |
4770 | struct zfcp_qdio_queue *req_queue; | |
4771 | volatile struct qdio_buffer_element *sbale; | |
8a36e453 | 4772 | int inc_seq_no; |
1da177e4 LT |
4773 | int new_distance_from_int; |
4774 | unsigned long flags; | |
1da177e4 LT |
4775 | int retval = 0; |
4776 | ||
4777 | adapter = fsf_req->adapter; | |
4778 | req_queue = &adapter->request_queue, | |
4779 | ||
4780 | ||
4781 | /* FIXME(debug): remove it later */ | |
4782 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_first, 0); | |
4783 | ZFCP_LOG_DEBUG("SBALE0 flags=0x%x\n", sbale[0].flags); | |
4784 | ZFCP_LOG_TRACE("HEX DUMP OF SBALE1 PAYLOAD:\n"); | |
4785 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, (char *) sbale[1].addr, | |
4786 | sbale[1].length); | |
4787 | ||
1da177e4 | 4788 | /* put allocated FSF request at list tail */ |
1db2c9c0 | 4789 | spin_lock_irqsave(&adapter->fsf_req_list_lock, flags); |
1da177e4 | 4790 | list_add_tail(&fsf_req->list, &adapter->fsf_req_list_head); |
1db2c9c0 | 4791 | spin_unlock_irqrestore(&adapter->fsf_req_list_lock, flags); |
1da177e4 | 4792 | |
8a36e453 MS |
4793 | inc_seq_no = (fsf_req->qtcb != NULL); |
4794 | ||
1da177e4 LT |
4795 | /* figure out expiration time of timeout and start timeout */ |
4796 | if (unlikely(timer)) { | |
4797 | timer->expires += jiffies; | |
4798 | add_timer(timer); | |
4799 | } | |
4800 | ||
4801 | ZFCP_LOG_TRACE("request queue of adapter %s: " | |
4802 | "next free SBAL is %i, %i free SBALs\n", | |
4803 | zfcp_get_busid_by_adapter(adapter), | |
4804 | req_queue->free_index, | |
4805 | atomic_read(&req_queue->free_count)); | |
4806 | ||
4807 | ZFCP_LOG_DEBUG("calling do_QDIO adapter %s, flags=0x%x, queue_no=%i, " | |
4808 | "index_in_queue=%i, count=%i, buffers=%p\n", | |
4809 | zfcp_get_busid_by_adapter(adapter), | |
4810 | QDIO_FLAG_SYNC_OUTPUT, | |
4811 | 0, fsf_req->sbal_first, fsf_req->sbal_number, | |
4812 | &req_queue->buffer[fsf_req->sbal_first]); | |
4813 | ||
4814 | /* | |
4815 | * adjust the number of free SBALs in request queue as well as | |
4816 | * position of first one | |
4817 | */ | |
4818 | atomic_sub(fsf_req->sbal_number, &req_queue->free_count); | |
4819 | ZFCP_LOG_TRACE("free_count=%d\n", atomic_read(&req_queue->free_count)); | |
4820 | req_queue->free_index += fsf_req->sbal_number; /* increase */ | |
4821 | req_queue->free_index %= QDIO_MAX_BUFFERS_PER_Q; /* wrap if needed */ | |
4822 | new_distance_from_int = zfcp_qdio_determine_pci(req_queue, fsf_req); | |
4823 | ||
8a36e453 MS |
4824 | fsf_req->issued = get_clock(); |
4825 | ||
1da177e4 LT |
4826 | retval = do_QDIO(adapter->ccw_device, |
4827 | QDIO_FLAG_SYNC_OUTPUT, | |
4828 | 0, fsf_req->sbal_first, fsf_req->sbal_number, NULL); | |
4829 | ||
4830 | if (unlikely(retval)) { | |
4831 | /* Queues are down..... */ | |
4832 | retval = -EIO; | |
4833 | /* | |
4834 | * FIXME(potential race): | |
4835 | * timer might be expired (absolutely unlikely) | |
4836 | */ | |
4837 | if (timer) | |
4838 | del_timer(timer); | |
1db2c9c0 | 4839 | spin_lock_irqsave(&adapter->fsf_req_list_lock, flags); |
1da177e4 | 4840 | list_del(&fsf_req->list); |
1db2c9c0 | 4841 | spin_unlock_irqrestore(&adapter->fsf_req_list_lock, flags); |
1da177e4 LT |
4842 | /* |
4843 | * adjust the number of free SBALs in request queue as well as | |
4844 | * position of first one | |
4845 | */ | |
4846 | zfcp_qdio_zero_sbals(req_queue->buffer, | |
4847 | fsf_req->sbal_first, fsf_req->sbal_number); | |
4848 | atomic_add(fsf_req->sbal_number, &req_queue->free_count); | |
4849 | req_queue->free_index -= fsf_req->sbal_number; /* increase */ | |
4850 | req_queue->free_index += QDIO_MAX_BUFFERS_PER_Q; | |
4851 | req_queue->free_index %= QDIO_MAX_BUFFERS_PER_Q; /* wrap */ | |
4852 | ZFCP_LOG_DEBUG | |
4853 | ("error: do_QDIO failed. Buffers could not be enqueued " | |
4854 | "to request queue.\n"); | |
4855 | } else { | |
4856 | req_queue->distance_from_int = new_distance_from_int; | |
4857 | /* | |
4858 | * increase FSF sequence counter - | |
4859 | * this must only be done for request successfully enqueued to | |
4860 | * QDIO this rejected requests may be cleaned up by calling | |
4861 | * routines resulting in missing sequence counter values | |
4862 | * otherwise, | |
4863 | */ | |
8a36e453 | 4864 | |
1da177e4 | 4865 | /* Don't increase for unsolicited status */ |
8a36e453 | 4866 | if (inc_seq_no) |
1da177e4 | 4867 | adapter->fsf_req_seq_no++; |
8a36e453 | 4868 | |
1da177e4 LT |
4869 | /* count FSF requests pending */ |
4870 | atomic_inc(&adapter->fsf_reqs_active); | |
4871 | } | |
4872 | return retval; | |
4873 | } | |
4874 | ||
1da177e4 | 4875 | #undef ZFCP_LOG_AREA |