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1da177e4 | 1 | /* |
4a9d2d8b AH |
2 | * This file is part of the zfcp device driver for |
3 | * FCP adapters for IBM System z9 and zSeries. | |
1da177e4 | 4 | * |
4a9d2d8b | 5 | * (C) Copyright IBM Corp. 2002, 2006 |
1da177e4 LT |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2, or (at your option) | |
10 | * any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | */ | |
21 | ||
1da177e4 LT |
22 | #include "zfcp_ext.h" |
23 | ||
24 | static int zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *); | |
25 | static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *); | |
26 | static int zfcp_fsf_open_port_handler(struct zfcp_fsf_req *); | |
27 | static int zfcp_fsf_close_port_handler(struct zfcp_fsf_req *); | |
28 | static int zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *); | |
29 | static int zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *); | |
30 | static int zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *); | |
31 | static int zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *); | |
32 | static int zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *); | |
33 | static int zfcp_fsf_send_fcp_command_task_management_handler( | |
34 | struct zfcp_fsf_req *); | |
35 | static int zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *); | |
36 | static int zfcp_fsf_status_read_handler(struct zfcp_fsf_req *); | |
37 | static int zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *); | |
38 | static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *); | |
39 | static int zfcp_fsf_control_file_handler(struct zfcp_fsf_req *); | |
40 | static inline int zfcp_fsf_req_sbal_check( | |
41 | unsigned long *, struct zfcp_qdio_queue *, int); | |
42 | static inline int zfcp_use_one_sbal( | |
43 | struct scatterlist *, int, struct scatterlist *, int); | |
44 | static struct zfcp_fsf_req *zfcp_fsf_req_alloc(mempool_t *, int); | |
2abbe866 | 45 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *); |
1da177e4 LT |
46 | static int zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *); |
47 | static int zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *); | |
48 | static int zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *); | |
aef4a983 MS |
49 | static void zfcp_fsf_link_down_info_eval(struct zfcp_adapter *, |
50 | struct fsf_link_down_info *); | |
1da177e4 | 51 | static int zfcp_fsf_req_dispatch(struct zfcp_fsf_req *); |
1da177e4 LT |
52 | |
53 | /* association between FSF command and FSF QTCB type */ | |
54 | static u32 fsf_qtcb_type[] = { | |
55 | [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND, | |
56 | [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND, | |
57 | [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND, | |
58 | [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND, | |
59 | [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND, | |
60 | [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND, | |
61 | [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND, | |
62 | [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND, | |
63 | [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND, | |
64 | [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND, | |
65 | [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND, | |
66 | [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND, | |
67 | [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND | |
68 | }; | |
69 | ||
70 | static const char zfcp_act_subtable_type[5][8] = { | |
71 | "unknown", "OS", "WWPN", "DID", "LUN" | |
72 | }; | |
73 | ||
74 | /****************************************************************/ | |
75 | /*************** FSF related Functions *************************/ | |
76 | /****************************************************************/ | |
77 | ||
78 | #define ZFCP_LOG_AREA ZFCP_LOG_AREA_FSF | |
79 | ||
80 | /* | |
81 | * function: zfcp_fsf_req_alloc | |
82 | * | |
83 | * purpose: Obtains an fsf_req and potentially a qtcb (for all but | |
84 | * unsolicited requests) via helper functions | |
85 | * Does some initial fsf request set-up. | |
86 | * | |
87 | * returns: pointer to allocated fsf_req if successfull | |
88 | * NULL otherwise | |
89 | * | |
90 | * locks: none | |
91 | * | |
92 | */ | |
93 | static struct zfcp_fsf_req * | |
94 | zfcp_fsf_req_alloc(mempool_t *pool, int req_flags) | |
95 | { | |
96 | size_t size; | |
97 | void *ptr; | |
98 | struct zfcp_fsf_req *fsf_req = NULL; | |
99 | ||
100 | if (req_flags & ZFCP_REQ_NO_QTCB) | |
101 | size = sizeof(struct zfcp_fsf_req); | |
102 | else | |
dd52e0ea | 103 | size = sizeof(struct zfcp_fsf_req_qtcb); |
1da177e4 | 104 | |
dd52e0ea | 105 | if (likely(pool)) |
1da177e4 | 106 | ptr = mempool_alloc(pool, GFP_ATOMIC); |
dd52e0ea HC |
107 | else { |
108 | if (req_flags & ZFCP_REQ_NO_QTCB) | |
109 | ptr = kmalloc(size, GFP_ATOMIC); | |
110 | else | |
111 | ptr = kmem_cache_alloc(zfcp_data.fsf_req_qtcb_cache, | |
54e6ecb2 | 112 | GFP_ATOMIC); |
dd52e0ea | 113 | } |
1da177e4 | 114 | |
dd52e0ea | 115 | if (unlikely(!ptr)) |
1da177e4 LT |
116 | goto out; |
117 | ||
118 | memset(ptr, 0, size); | |
119 | ||
120 | if (req_flags & ZFCP_REQ_NO_QTCB) { | |
121 | fsf_req = (struct zfcp_fsf_req *) ptr; | |
122 | } else { | |
dd52e0ea HC |
123 | fsf_req = &((struct zfcp_fsf_req_qtcb *) ptr)->fsf_req; |
124 | fsf_req->qtcb = &((struct zfcp_fsf_req_qtcb *) ptr)->qtcb; | |
1da177e4 LT |
125 | } |
126 | ||
127 | fsf_req->pool = pool; | |
128 | ||
129 | out: | |
130 | return fsf_req; | |
131 | } | |
132 | ||
133 | /* | |
134 | * function: zfcp_fsf_req_free | |
135 | * | |
136 | * purpose: Frees the memory of an fsf_req (and potentially a qtcb) or | |
137 | * returns it into the pool via helper functions. | |
138 | * | |
139 | * returns: sod all | |
140 | * | |
141 | * locks: none | |
142 | */ | |
1db2c9c0 | 143 | void |
1da177e4 LT |
144 | zfcp_fsf_req_free(struct zfcp_fsf_req *fsf_req) |
145 | { | |
dd52e0ea | 146 | if (likely(fsf_req->pool)) { |
1da177e4 | 147 | mempool_free(fsf_req, fsf_req->pool); |
dd52e0ea HC |
148 | return; |
149 | } | |
150 | ||
151 | if (fsf_req->qtcb) { | |
152 | kmem_cache_free(zfcp_data.fsf_req_qtcb_cache, fsf_req); | |
153 | return; | |
154 | } | |
155 | ||
156 | kfree(fsf_req); | |
1da177e4 LT |
157 | } |
158 | ||
fea9d6c7 VS |
159 | /** |
160 | * zfcp_fsf_req_dismiss - dismiss a single fsf request | |
1da177e4 | 161 | */ |
fea9d6c7 VS |
162 | static void zfcp_fsf_req_dismiss(struct zfcp_adapter *adapter, |
163 | struct zfcp_fsf_req *fsf_req, | |
164 | unsigned int counter) | |
1da177e4 | 165 | { |
fea9d6c7 | 166 | u64 dbg_tmp[2]; |
1da177e4 | 167 | |
fea9d6c7 VS |
168 | dbg_tmp[0] = (u64) atomic_read(&adapter->reqs_active); |
169 | dbg_tmp[1] = (u64) counter; | |
170 | debug_event(adapter->erp_dbf, 4, (void *) dbg_tmp, 16); | |
171 | list_del(&fsf_req->list); | |
172 | fsf_req->status |= ZFCP_STATUS_FSFREQ_DISMISSED; | |
173 | zfcp_fsf_req_complete(fsf_req); | |
1da177e4 LT |
174 | } |
175 | ||
fea9d6c7 VS |
176 | /** |
177 | * zfcp_fsf_req_dismiss_all - dismiss all remaining fsf requests | |
1da177e4 | 178 | */ |
fea9d6c7 | 179 | int zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter) |
1da177e4 | 180 | { |
fea9d6c7 VS |
181 | struct zfcp_fsf_req *request, *tmp; |
182 | unsigned long flags; | |
183 | unsigned int i, counter; | |
184 | ||
185 | spin_lock_irqsave(&adapter->req_list_lock, flags); | |
186 | atomic_set(&adapter->reqs_active, 0); | |
187 | for (i=0; i<REQUEST_LIST_SIZE; i++) { | |
188 | if (list_empty(&adapter->req_list[i])) | |
189 | continue; | |
190 | ||
191 | counter = 0; | |
192 | list_for_each_entry_safe(request, tmp, | |
193 | &adapter->req_list[i], list) { | |
194 | zfcp_fsf_req_dismiss(adapter, request, counter); | |
195 | counter++; | |
196 | } | |
197 | } | |
198 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); | |
199 | ||
200 | return 0; | |
1da177e4 LT |
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; | |
2abbe866 AH |
228 | } else { |
229 | del_timer(&fsf_req->timer); | |
1da177e4 | 230 | zfcp_fsf_protstatus_eval(fsf_req); |
2abbe866 | 231 | } |
1da177e4 LT |
232 | |
233 | /* | |
234 | * fsf_req may be deleted due to waking up functions, so | |
235 | * cleanup is saved here and used later | |
236 | */ | |
237 | if (likely(fsf_req->status & ZFCP_STATUS_FSFREQ_CLEANUP)) | |
238 | cleanup = 1; | |
239 | else | |
240 | cleanup = 0; | |
241 | ||
242 | fsf_req->status |= ZFCP_STATUS_FSFREQ_COMPLETED; | |
243 | ||
244 | /* cleanup request if requested by initiator */ | |
245 | if (likely(cleanup)) { | |
246 | ZFCP_LOG_TRACE("removing FSF request %p\n", fsf_req); | |
247 | /* | |
248 | * lock must not be held here since it will be | |
249 | * grabed by the called routine, too | |
250 | */ | |
1db2c9c0 | 251 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
252 | } else { |
253 | /* notify initiator waiting for the requests completion */ | |
254 | ZFCP_LOG_TRACE("waking initiator of FSF request %p\n",fsf_req); | |
255 | /* | |
256 | * FIXME: Race! We must not access fsf_req here as it might have been | |
257 | * cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED | |
258 | * flag. It's an improbable case. But, we have the same paranoia for | |
259 | * the cleanup flag already. | |
260 | * Might better be handled using complete()? | |
261 | * (setting the flag and doing wakeup ought to be atomic | |
262 | * with regard to checking the flag as long as waitqueue is | |
263 | * part of the to be released structure) | |
264 | */ | |
265 | wake_up(&fsf_req->completion_wq); | |
266 | } | |
267 | ||
268 | out: | |
269 | return retval; | |
270 | } | |
271 | ||
272 | /* | |
273 | * function: zfcp_fsf_protstatus_eval | |
274 | * | |
275 | * purpose: evaluates the QTCB of the finished FSF request | |
276 | * and initiates appropriate actions | |
277 | * (usually calling FSF command specific handlers) | |
278 | * | |
279 | * returns: | |
280 | * | |
281 | * context: | |
282 | * | |
283 | * locks: | |
284 | */ | |
285 | static int | |
286 | zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *fsf_req) | |
287 | { | |
288 | int retval = 0; | |
289 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
8a36e453 MS |
290 | struct fsf_qtcb *qtcb = fsf_req->qtcb; |
291 | union fsf_prot_status_qual *prot_status_qual = | |
292 | &qtcb->prefix.prot_status_qual; | |
1da177e4 | 293 | |
8a36e453 | 294 | zfcp_hba_dbf_event_fsf_response(fsf_req); |
1da177e4 LT |
295 | |
296 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { | |
297 | ZFCP_LOG_DEBUG("fsf_req 0x%lx has been dismissed\n", | |
298 | (unsigned long) fsf_req); | |
299 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
300 | ZFCP_STATUS_FSFREQ_RETRY; /* only for SCSI cmnds. */ | |
1da177e4 LT |
301 | goto skip_protstatus; |
302 | } | |
303 | ||
304 | /* log additional information provided by FSF (if any) */ | |
8a36e453 | 305 | if (unlikely(qtcb->header.log_length)) { |
1da177e4 | 306 | /* do not trust them ;-) */ |
8a36e453 | 307 | if (qtcb->header.log_start > sizeof(struct fsf_qtcb)) { |
1da177e4 LT |
308 | ZFCP_LOG_NORMAL |
309 | ("bug: ULP (FSF logging) log data starts " | |
310 | "beyond end of packet header. Ignored. " | |
311 | "(start=%i, size=%li)\n", | |
8a36e453 | 312 | qtcb->header.log_start, |
1da177e4 LT |
313 | sizeof(struct fsf_qtcb)); |
314 | goto forget_log; | |
315 | } | |
8a36e453 | 316 | if ((size_t) (qtcb->header.log_start + qtcb->header.log_length) |
1da177e4 LT |
317 | > sizeof(struct fsf_qtcb)) { |
318 | ZFCP_LOG_NORMAL("bug: ULP (FSF logging) log data ends " | |
319 | "beyond end of packet header. Ignored. " | |
320 | "(start=%i, length=%i, size=%li)\n", | |
8a36e453 MS |
321 | qtcb->header.log_start, |
322 | qtcb->header.log_length, | |
1da177e4 LT |
323 | sizeof(struct fsf_qtcb)); |
324 | goto forget_log; | |
325 | } | |
326 | ZFCP_LOG_TRACE("ULP log data: \n"); | |
327 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, | |
8a36e453 MS |
328 | (char *) qtcb + qtcb->header.log_start, |
329 | qtcb->header.log_length); | |
1da177e4 LT |
330 | } |
331 | forget_log: | |
332 | ||
333 | /* evaluate FSF Protocol Status */ | |
8a36e453 | 334 | switch (qtcb->prefix.prot_status) { |
1da177e4 LT |
335 | |
336 | case FSF_PROT_GOOD: | |
1da177e4 | 337 | case FSF_PROT_FSF_STATUS_PRESENTED: |
1da177e4 LT |
338 | break; |
339 | ||
340 | case FSF_PROT_QTCB_VERSION_ERROR: | |
1da177e4 LT |
341 | ZFCP_LOG_NORMAL("error: The adapter %s contains " |
342 | "microcode of version 0x%x, the device driver " | |
343 | "only supports 0x%x. Aborting.\n", | |
344 | zfcp_get_busid_by_adapter(adapter), | |
8a36e453 MS |
345 | prot_status_qual->version_error.fsf_version, |
346 | ZFCP_QTCB_VERSION); | |
1da177e4 | 347 | zfcp_erp_adapter_shutdown(adapter, 0); |
1da177e4 LT |
348 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
349 | break; | |
350 | ||
351 | case FSF_PROT_SEQ_NUMB_ERROR: | |
1da177e4 LT |
352 | ZFCP_LOG_NORMAL("bug: Sequence number mismatch between " |
353 | "driver (0x%x) and adapter %s (0x%x). " | |
354 | "Restarting all operations on this adapter.\n", | |
8a36e453 | 355 | qtcb->prefix.req_seq_no, |
1da177e4 | 356 | zfcp_get_busid_by_adapter(adapter), |
8a36e453 | 357 | prot_status_qual->sequence_error.exp_req_seq_no); |
1da177e4 | 358 | zfcp_erp_adapter_reopen(adapter, 0); |
1da177e4 LT |
359 | fsf_req->status |= ZFCP_STATUS_FSFREQ_RETRY; |
360 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
361 | break; | |
362 | ||
363 | case FSF_PROT_UNSUPP_QTCB_TYPE: | |
1da177e4 LT |
364 | ZFCP_LOG_NORMAL("error: Packet header type used by the " |
365 | "device driver is incompatible with " | |
366 | "that used on adapter %s. " | |
367 | "Stopping all operations on this adapter.\n", | |
368 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 | 369 | zfcp_erp_adapter_shutdown(adapter, 0); |
1da177e4 LT |
370 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
371 | break; | |
372 | ||
373 | case FSF_PROT_HOST_CONNECTION_INITIALIZING: | |
1da177e4 LT |
374 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
375 | atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT, | |
376 | &(adapter->status)); | |
1da177e4 LT |
377 | break; |
378 | ||
379 | case FSF_PROT_DUPLICATE_REQUEST_ID: | |
1da177e4 LT |
380 | ZFCP_LOG_NORMAL("bug: The request identifier 0x%Lx " |
381 | "to the adapter %s is ambiguous. " | |
aef4a983 MS |
382 | "Stopping all operations on this adapter.\n", |
383 | *(unsigned long long*) | |
384 | (&qtcb->bottom.support.req_handle), | |
1da177e4 | 385 | zfcp_get_busid_by_adapter(adapter)); |
1da177e4 | 386 | zfcp_erp_adapter_shutdown(adapter, 0); |
1da177e4 LT |
387 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
388 | break; | |
389 | ||
390 | case FSF_PROT_LINK_DOWN: | |
aef4a983 MS |
391 | zfcp_fsf_link_down_info_eval(adapter, |
392 | &prot_status_qual->link_down_info); | |
2f8f3ed5 | 393 | zfcp_erp_adapter_reopen(adapter, 0); |
1da177e4 LT |
394 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
395 | break; | |
396 | ||
397 | case FSF_PROT_REEST_QUEUE: | |
8a36e453 | 398 | ZFCP_LOG_NORMAL("The local link to adapter with " |
1da177e4 LT |
399 | "%s was re-plugged. " |
400 | "Re-starting operations on this adapter.\n", | |
401 | zfcp_get_busid_by_adapter(adapter)); | |
402 | /* All ports should be marked as ready to run again */ | |
403 | zfcp_erp_modify_adapter_status(adapter, | |
404 | ZFCP_STATUS_COMMON_RUNNING, | |
405 | ZFCP_SET); | |
406 | zfcp_erp_adapter_reopen(adapter, | |
407 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | |
408 | | ZFCP_STATUS_COMMON_ERP_FAILED); | |
1da177e4 LT |
409 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
410 | break; | |
411 | ||
412 | case FSF_PROT_ERROR_STATE: | |
1da177e4 LT |
413 | ZFCP_LOG_NORMAL("error: The adapter %s " |
414 | "has entered the error state. " | |
415 | "Restarting all operations on this " | |
416 | "adapter.\n", | |
417 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 | 418 | zfcp_erp_adapter_reopen(adapter, 0); |
1da177e4 LT |
419 | fsf_req->status |= ZFCP_STATUS_FSFREQ_RETRY; |
420 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
421 | break; | |
422 | ||
423 | default: | |
424 | ZFCP_LOG_NORMAL("bug: Transfer protocol status information " | |
425 | "provided by the adapter %s " | |
426 | "is not compatible with the device driver. " | |
427 | "Stopping all operations on this adapter. " | |
428 | "(debug info 0x%x).\n", | |
429 | zfcp_get_busid_by_adapter(adapter), | |
8a36e453 | 430 | qtcb->prefix.prot_status); |
1da177e4 LT |
431 | zfcp_erp_adapter_shutdown(adapter, 0); |
432 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
433 | } | |
434 | ||
435 | skip_protstatus: | |
436 | /* | |
437 | * always call specific handlers to give them a chance to do | |
438 | * something meaningful even in error cases | |
439 | */ | |
440 | zfcp_fsf_fsfstatus_eval(fsf_req); | |
441 | return retval; | |
442 | } | |
443 | ||
444 | /* | |
445 | * function: zfcp_fsf_fsfstatus_eval | |
446 | * | |
447 | * purpose: evaluates FSF status of completed FSF request | |
448 | * and acts accordingly | |
449 | * | |
450 | * returns: | |
451 | */ | |
452 | static int | |
453 | zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *fsf_req) | |
454 | { | |
455 | int retval = 0; | |
456 | ||
457 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
458 | goto skip_fsfstatus; | |
459 | } | |
460 | ||
461 | /* evaluate FSF Status */ | |
462 | switch (fsf_req->qtcb->header.fsf_status) { | |
463 | case FSF_UNKNOWN_COMMAND: | |
1da177e4 LT |
464 | ZFCP_LOG_NORMAL("bug: Command issued by the device driver is " |
465 | "not known by the adapter %s " | |
466 | "Stopping all operations on this adapter. " | |
467 | "(debug info 0x%x).\n", | |
468 | zfcp_get_busid_by_adapter(fsf_req->adapter), | |
469 | fsf_req->qtcb->header.fsf_command); | |
1da177e4 | 470 | zfcp_erp_adapter_shutdown(fsf_req->adapter, 0); |
1da177e4 LT |
471 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
472 | break; | |
473 | ||
474 | case FSF_FCP_RSP_AVAILABLE: | |
1da177e4 LT |
475 | ZFCP_LOG_DEBUG("FCP Sense data will be presented to the " |
476 | "SCSI stack.\n"); | |
1da177e4 LT |
477 | break; |
478 | ||
479 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
480 | zfcp_fsf_fsfstatus_qual_eval(fsf_req); |
481 | break; | |
1da177e4 LT |
482 | } |
483 | ||
484 | skip_fsfstatus: | |
485 | /* | |
486 | * always call specific handlers to give them a chance to do | |
487 | * something meaningful even in error cases | |
488 | */ | |
489 | zfcp_fsf_req_dispatch(fsf_req); | |
490 | ||
491 | return retval; | |
492 | } | |
493 | ||
494 | /* | |
495 | * function: zfcp_fsf_fsfstatus_qual_eval | |
496 | * | |
497 | * purpose: evaluates FSF status-qualifier of completed FSF request | |
498 | * and acts accordingly | |
499 | * | |
500 | * returns: | |
501 | */ | |
502 | static int | |
503 | zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *fsf_req) | |
504 | { | |
505 | int retval = 0; | |
506 | ||
507 | switch (fsf_req->qtcb->header.fsf_status_qual.word[0]) { | |
508 | case FSF_SQ_FCP_RSP_AVAILABLE: | |
1da177e4 LT |
509 | break; |
510 | case FSF_SQ_RETRY_IF_POSSIBLE: | |
1da177e4 | 511 | /* The SCSI-stack may now issue retries or escalate */ |
1da177e4 LT |
512 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
513 | break; | |
514 | case FSF_SQ_COMMAND_ABORTED: | |
1da177e4 | 515 | /* Carry the aborted state on to upper layer */ |
1da177e4 LT |
516 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTED; |
517 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
518 | break; | |
519 | case FSF_SQ_NO_RECOM: | |
1da177e4 LT |
520 | ZFCP_LOG_NORMAL("bug: No recommendation could be given for a" |
521 | "problem on the adapter %s " | |
522 | "Stopping all operations on this adapter. ", | |
523 | zfcp_get_busid_by_adapter(fsf_req->adapter)); | |
524 | zfcp_erp_adapter_shutdown(fsf_req->adapter, 0); | |
1da177e4 LT |
525 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
526 | break; | |
527 | case FSF_SQ_ULP_PROGRAMMING_ERROR: | |
1da177e4 LT |
528 | ZFCP_LOG_NORMAL("error: not enough SBALs for data transfer " |
529 | "(adapter %s)\n", | |
530 | zfcp_get_busid_by_adapter(fsf_req->adapter)); | |
1da177e4 LT |
531 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
532 | break; | |
533 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
534 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
535 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
536 | /* dealt with in the respective functions */ | |
537 | break; | |
538 | default: | |
539 | ZFCP_LOG_NORMAL("bug: Additional status info could " | |
540 | "not be interpreted properly.\n"); | |
541 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL, | |
542 | (char *) &fsf_req->qtcb->header.fsf_status_qual, | |
543 | sizeof (union fsf_status_qual)); | |
1da177e4 LT |
544 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
545 | break; | |
546 | } | |
547 | ||
548 | return retval; | |
549 | } | |
550 | ||
aef4a983 MS |
551 | /** |
552 | * zfcp_fsf_link_down_info_eval - evaluate link down information block | |
553 | */ | |
554 | static void | |
555 | zfcp_fsf_link_down_info_eval(struct zfcp_adapter *adapter, | |
556 | struct fsf_link_down_info *link_down) | |
557 | { | |
ee69ab7a MS |
558 | if (atomic_test_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, |
559 | &adapter->status)) | |
560 | return; | |
561 | ||
562 | atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status); | |
563 | ||
2f8f3ed5 AH |
564 | if (link_down == NULL) |
565 | goto out; | |
ee69ab7a | 566 | |
aef4a983 MS |
567 | switch (link_down->error_code) { |
568 | case FSF_PSQ_LINK_NO_LIGHT: | |
569 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
570 | "(no light detected)\n", | |
571 | zfcp_get_busid_by_adapter(adapter)); | |
572 | break; | |
573 | case FSF_PSQ_LINK_WRAP_PLUG: | |
574 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
575 | "(wrap plug detected)\n", | |
576 | zfcp_get_busid_by_adapter(adapter)); | |
577 | break; | |
578 | case FSF_PSQ_LINK_NO_FCP: | |
579 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
580 | "(adjacent node on link does not support FCP)\n", | |
581 | zfcp_get_busid_by_adapter(adapter)); | |
582 | break; | |
583 | case FSF_PSQ_LINK_FIRMWARE_UPDATE: | |
584 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
585 | "(firmware update in progress)\n", | |
586 | zfcp_get_busid_by_adapter(adapter)); | |
587 | break; | |
588 | case FSF_PSQ_LINK_INVALID_WWPN: | |
589 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
590 | "(duplicate or invalid WWPN detected)\n", | |
591 | zfcp_get_busid_by_adapter(adapter)); | |
592 | break; | |
593 | case FSF_PSQ_LINK_NO_NPIV_SUPPORT: | |
594 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
595 | "(no support for NPIV by Fabric)\n", | |
596 | zfcp_get_busid_by_adapter(adapter)); | |
597 | break; | |
598 | case FSF_PSQ_LINK_NO_FCP_RESOURCES: | |
599 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
600 | "(out of resource in FCP daughtercard)\n", | |
601 | zfcp_get_busid_by_adapter(adapter)); | |
602 | break; | |
603 | case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: | |
604 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
605 | "(out of resource in Fabric)\n", | |
606 | zfcp_get_busid_by_adapter(adapter)); | |
607 | break; | |
608 | case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: | |
609 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
610 | "(unable to Fabric login)\n", | |
611 | zfcp_get_busid_by_adapter(adapter)); | |
612 | break; | |
613 | case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: | |
614 | ZFCP_LOG_NORMAL("WWPN assignment file corrupted on adapter %s\n", | |
615 | zfcp_get_busid_by_adapter(adapter)); | |
616 | break; | |
617 | case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: | |
618 | ZFCP_LOG_NORMAL("Mode table corrupted on adapter %s\n", | |
619 | zfcp_get_busid_by_adapter(adapter)); | |
620 | break; | |
621 | case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: | |
622 | ZFCP_LOG_NORMAL("No WWPN for assignment table on adapter %s\n", | |
623 | zfcp_get_busid_by_adapter(adapter)); | |
624 | break; | |
625 | default: | |
626 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
627 | "(warning: unknown reason code %d)\n", | |
628 | zfcp_get_busid_by_adapter(adapter), | |
629 | link_down->error_code); | |
630 | } | |
631 | ||
632 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) | |
633 | ZFCP_LOG_DEBUG("Debug information to link down: " | |
634 | "primary_status=0x%02x " | |
635 | "ioerr_code=0x%02x " | |
636 | "action_code=0x%02x " | |
637 | "reason_code=0x%02x " | |
638 | "explanation_code=0x%02x " | |
639 | "vendor_specific_code=0x%02x\n", | |
640 | link_down->primary_status, | |
641 | link_down->ioerr_code, | |
642 | link_down->action_code, | |
643 | link_down->reason_code, | |
644 | link_down->explanation_code, | |
645 | link_down->vendor_specific_code); | |
646 | ||
2f8f3ed5 AH |
647 | out: |
648 | zfcp_erp_adapter_failed(adapter); | |
aef4a983 MS |
649 | } |
650 | ||
1da177e4 LT |
651 | /* |
652 | * function: zfcp_fsf_req_dispatch | |
653 | * | |
654 | * purpose: calls the appropriate command specific handler | |
655 | * | |
656 | * returns: | |
657 | */ | |
658 | static int | |
659 | zfcp_fsf_req_dispatch(struct zfcp_fsf_req *fsf_req) | |
660 | { | |
661 | struct zfcp_erp_action *erp_action = fsf_req->erp_action; | |
662 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
663 | int retval = 0; | |
664 | ||
1da177e4 LT |
665 | |
666 | switch (fsf_req->fsf_command) { | |
667 | ||
668 | case FSF_QTCB_FCP_CMND: | |
1da177e4 LT |
669 | zfcp_fsf_send_fcp_command_handler(fsf_req); |
670 | break; | |
671 | ||
672 | case FSF_QTCB_ABORT_FCP_CMND: | |
1da177e4 LT |
673 | zfcp_fsf_abort_fcp_command_handler(fsf_req); |
674 | break; | |
675 | ||
676 | case FSF_QTCB_SEND_GENERIC: | |
1da177e4 LT |
677 | zfcp_fsf_send_ct_handler(fsf_req); |
678 | break; | |
679 | ||
680 | case FSF_QTCB_OPEN_PORT_WITH_DID: | |
1da177e4 LT |
681 | zfcp_fsf_open_port_handler(fsf_req); |
682 | break; | |
683 | ||
684 | case FSF_QTCB_OPEN_LUN: | |
1da177e4 LT |
685 | zfcp_fsf_open_unit_handler(fsf_req); |
686 | break; | |
687 | ||
688 | case FSF_QTCB_CLOSE_LUN: | |
1da177e4 LT |
689 | zfcp_fsf_close_unit_handler(fsf_req); |
690 | break; | |
691 | ||
692 | case FSF_QTCB_CLOSE_PORT: | |
1da177e4 LT |
693 | zfcp_fsf_close_port_handler(fsf_req); |
694 | break; | |
695 | ||
696 | case FSF_QTCB_CLOSE_PHYSICAL_PORT: | |
1da177e4 LT |
697 | zfcp_fsf_close_physical_port_handler(fsf_req); |
698 | break; | |
699 | ||
700 | case FSF_QTCB_EXCHANGE_CONFIG_DATA: | |
1da177e4 LT |
701 | zfcp_fsf_exchange_config_data_handler(fsf_req); |
702 | break; | |
703 | ||
704 | case FSF_QTCB_EXCHANGE_PORT_DATA: | |
1da177e4 LT |
705 | zfcp_fsf_exchange_port_data_handler(fsf_req); |
706 | break; | |
707 | ||
708 | case FSF_QTCB_SEND_ELS: | |
1da177e4 LT |
709 | zfcp_fsf_send_els_handler(fsf_req); |
710 | break; | |
711 | ||
712 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
1da177e4 LT |
713 | zfcp_fsf_control_file_handler(fsf_req); |
714 | break; | |
715 | ||
716 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
1da177e4 LT |
717 | zfcp_fsf_control_file_handler(fsf_req); |
718 | break; | |
719 | ||
720 | default: | |
1da177e4 LT |
721 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
722 | ZFCP_LOG_NORMAL("bug: Command issued by the device driver is " | |
723 | "not supported by the adapter %s\n", | |
8a36e453 | 724 | zfcp_get_busid_by_adapter(adapter)); |
1da177e4 LT |
725 | if (fsf_req->fsf_command != fsf_req->qtcb->header.fsf_command) |
726 | ZFCP_LOG_NORMAL | |
727 | ("bug: Command issued by the device driver differs " | |
728 | "from the command returned by the adapter %s " | |
729 | "(debug info 0x%x, 0x%x).\n", | |
8a36e453 | 730 | zfcp_get_busid_by_adapter(adapter), |
1da177e4 LT |
731 | fsf_req->fsf_command, |
732 | fsf_req->qtcb->header.fsf_command); | |
733 | } | |
734 | ||
735 | if (!erp_action) | |
736 | return retval; | |
737 | ||
1da177e4 LT |
738 | zfcp_erp_async_handler(erp_action, 0); |
739 | ||
740 | return retval; | |
741 | } | |
742 | ||
743 | /* | |
744 | * function: zfcp_fsf_status_read | |
745 | * | |
746 | * purpose: initiates a Status Read command at the specified adapter | |
747 | * | |
748 | * returns: | |
749 | */ | |
750 | int | |
751 | zfcp_fsf_status_read(struct zfcp_adapter *adapter, int req_flags) | |
752 | { | |
753 | struct zfcp_fsf_req *fsf_req; | |
754 | struct fsf_status_read_buffer *status_buffer; | |
755 | unsigned long lock_flags; | |
756 | volatile struct qdio_buffer_element *sbale; | |
757 | int retval = 0; | |
758 | ||
759 | /* setup new FSF request */ | |
760 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS, | |
761 | req_flags | ZFCP_REQ_NO_QTCB, | |
762 | adapter->pool.fsf_req_status_read, | |
763 | &lock_flags, &fsf_req); | |
764 | if (retval < 0) { | |
765 | ZFCP_LOG_INFO("error: Could not create unsolicited status " | |
766 | "buffer for adapter %s.\n", | |
767 | zfcp_get_busid_by_adapter(adapter)); | |
768 | goto failed_req_create; | |
769 | } | |
770 | ||
771 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
772 | sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS; | |
773 | sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY; | |
774 | fsf_req->sbale_curr = 2; | |
775 | ||
776 | status_buffer = | |
777 | mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC); | |
778 | if (!status_buffer) { | |
779 | ZFCP_LOG_NORMAL("bug: could not get some buffer\n"); | |
780 | goto failed_buf; | |
781 | } | |
782 | memset(status_buffer, 0, sizeof (struct fsf_status_read_buffer)); | |
059c97d0 | 783 | fsf_req->data = (unsigned long) status_buffer; |
1da177e4 LT |
784 | |
785 | /* insert pointer to respective buffer */ | |
786 | sbale = zfcp_qdio_sbale_curr(fsf_req); | |
787 | sbale->addr = (void *) status_buffer; | |
788 | sbale->length = sizeof(struct fsf_status_read_buffer); | |
789 | ||
2abbe866 | 790 | retval = zfcp_fsf_req_send(fsf_req); |
1da177e4 LT |
791 | if (retval) { |
792 | ZFCP_LOG_DEBUG("error: Could not set-up unsolicited status " | |
793 | "environment.\n"); | |
794 | goto failed_req_send; | |
795 | } | |
796 | ||
797 | ZFCP_LOG_TRACE("Status Read request initiated (adapter%s)\n", | |
798 | zfcp_get_busid_by_adapter(adapter)); | |
799 | goto out; | |
800 | ||
801 | failed_req_send: | |
802 | mempool_free(status_buffer, adapter->pool.data_status_read); | |
803 | ||
804 | failed_buf: | |
805 | zfcp_fsf_req_free(fsf_req); | |
806 | failed_req_create: | |
8a36e453 | 807 | zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL); |
1da177e4 LT |
808 | out: |
809 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
810 | return retval; | |
811 | } | |
812 | ||
813 | static int | |
814 | zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *fsf_req) | |
815 | { | |
816 | struct fsf_status_read_buffer *status_buffer; | |
817 | struct zfcp_adapter *adapter; | |
818 | struct zfcp_port *port; | |
819 | unsigned long flags; | |
820 | ||
059c97d0 | 821 | status_buffer = (struct fsf_status_read_buffer *) fsf_req->data; |
1da177e4 LT |
822 | adapter = fsf_req->adapter; |
823 | ||
824 | read_lock_irqsave(&zfcp_data.config_lock, flags); | |
825 | list_for_each_entry(port, &adapter->port_list_head, list) | |
826 | if (port->d_id == (status_buffer->d_id & ZFCP_DID_MASK)) | |
827 | break; | |
828 | read_unlock_irqrestore(&zfcp_data.config_lock, flags); | |
829 | ||
830 | if (!port || (port->d_id != (status_buffer->d_id & ZFCP_DID_MASK))) { | |
831 | ZFCP_LOG_NORMAL("bug: Reopen port indication received for" | |
832 | "nonexisting port with d_id 0x%08x on " | |
833 | "adapter %s. Ignored.\n", | |
834 | status_buffer->d_id & ZFCP_DID_MASK, | |
835 | zfcp_get_busid_by_adapter(adapter)); | |
836 | goto out; | |
837 | } | |
838 | ||
839 | switch (status_buffer->status_subtype) { | |
840 | ||
841 | case FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT: | |
1da177e4 LT |
842 | debug_text_event(adapter->erp_dbf, 3, "unsol_pc_phys:"); |
843 | zfcp_erp_port_reopen(port, 0); | |
844 | break; | |
845 | ||
846 | case FSF_STATUS_READ_SUB_ERROR_PORT: | |
1da177e4 LT |
847 | debug_text_event(adapter->erp_dbf, 1, "unsol_pc_err:"); |
848 | zfcp_erp_port_shutdown(port, 0); | |
849 | break; | |
850 | ||
851 | default: | |
852 | debug_text_event(adapter->erp_dbf, 0, "unsol_unk_sub:"); | |
853 | debug_exception(adapter->erp_dbf, 0, | |
854 | &status_buffer->status_subtype, sizeof (u32)); | |
855 | ZFCP_LOG_NORMAL("bug: Undefined status subtype received " | |
856 | "for a reopen indication on port with " | |
857 | "d_id 0x%08x on the adapter %s. " | |
858 | "Ignored. (debug info 0x%x)\n", | |
859 | status_buffer->d_id, | |
860 | zfcp_get_busid_by_adapter(adapter), | |
861 | status_buffer->status_subtype); | |
862 | } | |
863 | out: | |
864 | return 0; | |
865 | } | |
866 | ||
867 | /* | |
868 | * function: zfcp_fsf_status_read_handler | |
869 | * | |
870 | * purpose: is called for finished Open Port command | |
871 | * | |
872 | * returns: | |
873 | */ | |
874 | static int | |
875 | zfcp_fsf_status_read_handler(struct zfcp_fsf_req *fsf_req) | |
876 | { | |
877 | int retval = 0; | |
878 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
879 | struct fsf_status_read_buffer *status_buffer = | |
059c97d0 | 880 | (struct fsf_status_read_buffer *) fsf_req->data; |
b7a52fa7 | 881 | struct fsf_bit_error_payload *fsf_bit_error; |
1da177e4 LT |
882 | |
883 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { | |
8a36e453 | 884 | zfcp_hba_dbf_event_fsf_unsol("dism", adapter, status_buffer); |
1da177e4 | 885 | mempool_free(status_buffer, adapter->pool.data_status_read); |
1db2c9c0 | 886 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
887 | goto out; |
888 | } | |
889 | ||
8a36e453 MS |
890 | zfcp_hba_dbf_event_fsf_unsol("read", adapter, status_buffer); |
891 | ||
1da177e4 LT |
892 | switch (status_buffer->status_type) { |
893 | ||
894 | case FSF_STATUS_READ_PORT_CLOSED: | |
1da177e4 LT |
895 | zfcp_fsf_status_read_port_closed(fsf_req); |
896 | break; | |
897 | ||
898 | case FSF_STATUS_READ_INCOMING_ELS: | |
1da177e4 LT |
899 | zfcp_fsf_incoming_els(fsf_req); |
900 | break; | |
901 | ||
902 | case FSF_STATUS_READ_SENSE_DATA_AVAIL: | |
1da177e4 LT |
903 | ZFCP_LOG_INFO("unsolicited sense data received (adapter %s)\n", |
904 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 LT |
905 | break; |
906 | ||
907 | case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: | |
b7a52fa7 RW |
908 | fsf_bit_error = (struct fsf_bit_error_payload *) |
909 | status_buffer->payload; | |
910 | ZFCP_LOG_NORMAL("Warning: bit error threshold data " | |
911 | "received (adapter %s, " | |
912 | "link failures = %i, loss of sync errors = %i, " | |
913 | "loss of signal errors = %i, " | |
914 | "primitive sequence errors = %i, " | |
915 | "invalid transmission word errors = %i, " | |
916 | "CRC errors = %i)\n", | |
917 | zfcp_get_busid_by_adapter(adapter), | |
918 | fsf_bit_error->link_failure_error_count, | |
919 | fsf_bit_error->loss_of_sync_error_count, | |
920 | fsf_bit_error->loss_of_signal_error_count, | |
921 | fsf_bit_error->primitive_sequence_error_count, | |
922 | fsf_bit_error->invalid_transmission_word_error_count, | |
923 | fsf_bit_error->crc_error_count); | |
924 | ZFCP_LOG_INFO("Additional bit error threshold data " | |
925 | "(adapter %s, " | |
926 | "primitive sequence event time-outs = %i, " | |
927 | "elastic buffer overrun errors = %i, " | |
928 | "advertised receive buffer-to-buffer credit = %i, " | |
929 | "current receice buffer-to-buffer credit = %i, " | |
930 | "advertised transmit buffer-to-buffer credit = %i, " | |
931 | "current transmit buffer-to-buffer credit = %i)\n", | |
932 | zfcp_get_busid_by_adapter(adapter), | |
933 | fsf_bit_error->primitive_sequence_event_timeout_count, | |
934 | fsf_bit_error->elastic_buffer_overrun_error_count, | |
935 | fsf_bit_error->advertised_receive_b2b_credit, | |
936 | fsf_bit_error->current_receive_b2b_credit, | |
937 | fsf_bit_error->advertised_transmit_b2b_credit, | |
938 | fsf_bit_error->current_transmit_b2b_credit); | |
1da177e4 LT |
939 | break; |
940 | ||
941 | case FSF_STATUS_READ_LINK_DOWN: | |
aef4a983 MS |
942 | switch (status_buffer->status_subtype) { |
943 | case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: | |
944 | ZFCP_LOG_INFO("Physical link to adapter %s is down\n", | |
945 | zfcp_get_busid_by_adapter(adapter)); | |
ee69ab7a MS |
946 | zfcp_fsf_link_down_info_eval(adapter, |
947 | (struct fsf_link_down_info *) | |
948 | &status_buffer->payload); | |
aef4a983 MS |
949 | break; |
950 | case FSF_STATUS_READ_SUB_FDISC_FAILED: | |
951 | ZFCP_LOG_INFO("Local link to adapter %s is down " | |
952 | "due to failed FDISC login\n", | |
ee69ab7a MS |
953 | zfcp_get_busid_by_adapter(adapter)); |
954 | zfcp_fsf_link_down_info_eval(adapter, | |
955 | (struct fsf_link_down_info *) | |
956 | &status_buffer->payload); | |
aef4a983 MS |
957 | break; |
958 | case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE: | |
959 | ZFCP_LOG_INFO("Local link to adapter %s is down " | |
960 | "due to firmware update on adapter\n", | |
961 | zfcp_get_busid_by_adapter(adapter)); | |
ee69ab7a | 962 | zfcp_fsf_link_down_info_eval(adapter, NULL); |
aef4a983 MS |
963 | break; |
964 | default: | |
965 | ZFCP_LOG_INFO("Local link to adapter %s is down " | |
966 | "due to unknown reason\n", | |
967 | zfcp_get_busid_by_adapter(adapter)); | |
ee69ab7a | 968 | zfcp_fsf_link_down_info_eval(adapter, NULL); |
aef4a983 | 969 | }; |
1da177e4 LT |
970 | break; |
971 | ||
972 | case FSF_STATUS_READ_LINK_UP: | |
aef4a983 | 973 | ZFCP_LOG_NORMAL("Local link to adapter %s was replugged. " |
ee69ab7a MS |
974 | "Restarting operations on this adapter\n", |
975 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 LT |
976 | /* All ports should be marked as ready to run again */ |
977 | zfcp_erp_modify_adapter_status(adapter, | |
978 | ZFCP_STATUS_COMMON_RUNNING, | |
979 | ZFCP_SET); | |
980 | zfcp_erp_adapter_reopen(adapter, | |
981 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | |
982 | | ZFCP_STATUS_COMMON_ERP_FAILED); | |
983 | break; | |
984 | ||
9eb69aff MS |
985 | case FSF_STATUS_READ_NOTIFICATION_LOST: |
986 | ZFCP_LOG_NORMAL("Unsolicited status notification(s) lost: " | |
987 | "adapter %s%s%s%s%s%s%s%s%s\n", | |
988 | zfcp_get_busid_by_adapter(adapter), | |
989 | (status_buffer->status_subtype & | |
990 | FSF_STATUS_READ_SUB_INCOMING_ELS) ? | |
991 | ", incoming ELS" : "", | |
992 | (status_buffer->status_subtype & | |
993 | FSF_STATUS_READ_SUB_SENSE_DATA) ? | |
994 | ", sense data" : "", | |
995 | (status_buffer->status_subtype & | |
996 | FSF_STATUS_READ_SUB_LINK_STATUS) ? | |
997 | ", link status change" : "", | |
998 | (status_buffer->status_subtype & | |
999 | FSF_STATUS_READ_SUB_PORT_CLOSED) ? | |
1000 | ", port close" : "", | |
1001 | (status_buffer->status_subtype & | |
1002 | FSF_STATUS_READ_SUB_BIT_ERROR_THRESHOLD) ? | |
1003 | ", bit error exception" : "", | |
1004 | (status_buffer->status_subtype & | |
1005 | FSF_STATUS_READ_SUB_ACT_UPDATED) ? | |
1006 | ", ACT update" : "", | |
1007 | (status_buffer->status_subtype & | |
1008 | FSF_STATUS_READ_SUB_ACT_HARDENED) ? | |
1009 | ", ACT hardening" : "", | |
1010 | (status_buffer->status_subtype & | |
1011 | FSF_STATUS_READ_SUB_FEATURE_UPDATE_ALERT) ? | |
1012 | ", adapter feature change" : ""); | |
1013 | ||
1014 | if (status_buffer->status_subtype & | |
1015 | FSF_STATUS_READ_SUB_ACT_UPDATED) | |
1016 | zfcp_erp_adapter_access_changed(adapter); | |
1017 | break; | |
1018 | ||
1da177e4 | 1019 | case FSF_STATUS_READ_CFDC_UPDATED: |
8a36e453 | 1020 | ZFCP_LOG_NORMAL("CFDC has been updated on the adapter %s\n", |
1da177e4 LT |
1021 | zfcp_get_busid_by_adapter(adapter)); |
1022 | zfcp_erp_adapter_access_changed(adapter); | |
1023 | break; | |
1024 | ||
1025 | case FSF_STATUS_READ_CFDC_HARDENED: | |
1da177e4 LT |
1026 | switch (status_buffer->status_subtype) { |
1027 | case FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE: | |
8a36e453 | 1028 | ZFCP_LOG_NORMAL("CFDC of adapter %s saved on SE\n", |
1da177e4 LT |
1029 | zfcp_get_busid_by_adapter(adapter)); |
1030 | break; | |
1031 | case FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE2: | |
8a36e453 | 1032 | ZFCP_LOG_NORMAL("CFDC of adapter %s has been copied " |
1da177e4 LT |
1033 | "to the secondary SE\n", |
1034 | zfcp_get_busid_by_adapter(adapter)); | |
1035 | break; | |
1036 | default: | |
8a36e453 | 1037 | ZFCP_LOG_NORMAL("CFDC of adapter %s has been hardened\n", |
1da177e4 LT |
1038 | zfcp_get_busid_by_adapter(adapter)); |
1039 | } | |
1040 | break; | |
1041 | ||
aef4a983 MS |
1042 | case FSF_STATUS_READ_FEATURE_UPDATE_ALERT: |
1043 | debug_text_event(adapter->erp_dbf, 2, "unsol_features:"); | |
1044 | ZFCP_LOG_INFO("List of supported features on adapter %s has " | |
1045 | "been changed from 0x%08X to 0x%08X\n", | |
1046 | zfcp_get_busid_by_adapter(adapter), | |
1047 | *(u32*) (status_buffer->payload + 4), | |
1048 | *(u32*) (status_buffer->payload)); | |
1049 | adapter->adapter_features = *(u32*) status_buffer->payload; | |
1050 | break; | |
1051 | ||
1da177e4 | 1052 | default: |
8a36e453 | 1053 | ZFCP_LOG_NORMAL("warning: An unsolicited status packet of unknown " |
1da177e4 LT |
1054 | "type was received (debug info 0x%x)\n", |
1055 | status_buffer->status_type); | |
1056 | ZFCP_LOG_DEBUG("Dump of status_read_buffer %p:\n", | |
1057 | status_buffer); | |
1058 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
1059 | (char *) status_buffer, | |
1060 | sizeof (struct fsf_status_read_buffer)); | |
1061 | break; | |
1062 | } | |
1063 | mempool_free(status_buffer, adapter->pool.data_status_read); | |
1db2c9c0 | 1064 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
1065 | /* |
1066 | * recycle buffer and start new request repeat until outbound | |
1067 | * queue is empty or adapter shutdown is requested | |
1068 | */ | |
1069 | /* | |
1070 | * FIXME(qdio): | |
1071 | * we may wait in the req_create for 5s during shutdown, so | |
1072 | * qdio_cleanup will have to wait at least that long before returning | |
1073 | * with failure to allow us a proper cleanup under all circumstances | |
1074 | */ | |
1075 | /* | |
1076 | * FIXME: | |
1077 | * allocation failure possible? (Is this code needed?) | |
1078 | */ | |
1079 | retval = zfcp_fsf_status_read(adapter, 0); | |
1080 | if (retval < 0) { | |
1081 | ZFCP_LOG_INFO("Failed to create unsolicited status read " | |
1082 | "request for the adapter %s.\n", | |
1083 | zfcp_get_busid_by_adapter(adapter)); | |
1084 | /* temporary fix to avoid status read buffer shortage */ | |
1085 | adapter->status_read_failed++; | |
1086 | if ((ZFCP_STATUS_READS_RECOM - adapter->status_read_failed) | |
1087 | < ZFCP_STATUS_READ_FAILED_THRESHOLD) { | |
1088 | ZFCP_LOG_INFO("restart adapter %s due to status read " | |
1089 | "buffer shortage\n", | |
1090 | zfcp_get_busid_by_adapter(adapter)); | |
1091 | zfcp_erp_adapter_reopen(adapter, 0); | |
1092 | } | |
1093 | } | |
1094 | out: | |
1095 | return retval; | |
1096 | } | |
1097 | ||
1098 | /* | |
1099 | * function: zfcp_fsf_abort_fcp_command | |
1100 | * | |
1101 | * purpose: tells FSF to abort a running SCSI command | |
1102 | * | |
1103 | * returns: address of initiated FSF request | |
1104 | * NULL - request could not be initiated | |
1105 | * | |
1106 | * FIXME(design): should be watched by a timeout !!! | |
1107 | * FIXME(design) shouldn't this be modified to return an int | |
1108 | * also...don't know how though | |
1109 | */ | |
1110 | struct zfcp_fsf_req * | |
1111 | zfcp_fsf_abort_fcp_command(unsigned long old_req_id, | |
1112 | struct zfcp_adapter *adapter, | |
1113 | struct zfcp_unit *unit, int req_flags) | |
1114 | { | |
1115 | volatile struct qdio_buffer_element *sbale; | |
1da177e4 | 1116 | struct zfcp_fsf_req *fsf_req = NULL; |
2abbe866 | 1117 | unsigned long lock_flags; |
1da177e4 LT |
1118 | int retval = 0; |
1119 | ||
1120 | /* setup new FSF request */ | |
1121 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND, | |
1122 | req_flags, adapter->pool.fsf_req_abort, | |
1123 | &lock_flags, &fsf_req); | |
1124 | if (retval < 0) { | |
1125 | ZFCP_LOG_INFO("error: Failed to create an abort command " | |
1126 | "request for lun 0x%016Lx on port 0x%016Lx " | |
1127 | "on adapter %s.\n", | |
1128 | unit->fcp_lun, | |
1129 | unit->port->wwpn, | |
1130 | zfcp_get_busid_by_adapter(adapter)); | |
1131 | goto out; | |
1132 | } | |
1133 | ||
1134 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
1135 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1136 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1137 | ||
059c97d0 | 1138 | fsf_req->data = (unsigned long) unit; |
1da177e4 LT |
1139 | |
1140 | /* set handles of unit and its parent port in QTCB */ | |
1141 | fsf_req->qtcb->header.lun_handle = unit->handle; | |
1142 | fsf_req->qtcb->header.port_handle = unit->port->handle; | |
1143 | ||
1144 | /* set handle of request which should be aborted */ | |
1145 | fsf_req->qtcb->bottom.support.req_handle = (u64) old_req_id; | |
1146 | ||
2abbe866 AH |
1147 | zfcp_fsf_start_timer(fsf_req, ZFCP_SCSI_ER_TIMEOUT); |
1148 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 | 1149 | if (retval) { |
1da177e4 LT |
1150 | ZFCP_LOG_INFO("error: Failed to send abort command request " |
1151 | "on adapter %s, port 0x%016Lx, unit 0x%016Lx\n", | |
1152 | zfcp_get_busid_by_adapter(adapter), | |
1153 | unit->port->wwpn, unit->fcp_lun); | |
1154 | zfcp_fsf_req_free(fsf_req); | |
1155 | fsf_req = NULL; | |
1156 | goto out; | |
1157 | } | |
1158 | ||
1159 | ZFCP_LOG_DEBUG("Abort FCP Command request initiated " | |
1160 | "(adapter%s, port d_id=0x%08x, " | |
1161 | "unit x%016Lx, old_req_id=0x%lx)\n", | |
1162 | zfcp_get_busid_by_adapter(adapter), | |
1163 | unit->port->d_id, | |
1164 | unit->fcp_lun, old_req_id); | |
1165 | out: | |
1166 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
1167 | return fsf_req; | |
1168 | } | |
1169 | ||
1170 | /* | |
1171 | * function: zfcp_fsf_abort_fcp_command_handler | |
1172 | * | |
1173 | * purpose: is called for finished Abort FCP Command request | |
1174 | * | |
1175 | * returns: | |
1176 | */ | |
1177 | static int | |
1178 | zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *new_fsf_req) | |
1179 | { | |
1180 | int retval = -EINVAL; | |
059c97d0 | 1181 | struct zfcp_unit *unit; |
1da177e4 LT |
1182 | unsigned char status_qual = |
1183 | new_fsf_req->qtcb->header.fsf_status_qual.word[0]; | |
1184 | ||
1da177e4 LT |
1185 | if (new_fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { |
1186 | /* do not set ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED */ | |
1187 | goto skip_fsfstatus; | |
1188 | } | |
1189 | ||
059c97d0 AH |
1190 | unit = (struct zfcp_unit *) new_fsf_req->data; |
1191 | ||
1da177e4 LT |
1192 | /* evaluate FSF status in QTCB */ |
1193 | switch (new_fsf_req->qtcb->header.fsf_status) { | |
1194 | ||
1195 | case FSF_PORT_HANDLE_NOT_VALID: | |
1196 | if (status_qual >> 4 != status_qual % 0xf) { | |
1da177e4 LT |
1197 | debug_text_event(new_fsf_req->adapter->erp_dbf, 3, |
1198 | "fsf_s_phand_nv0"); | |
1199 | /* | |
1200 | * In this case a command that was sent prior to a port | |
1201 | * reopen was aborted (handles are different). This is | |
1202 | * fine. | |
1203 | */ | |
1204 | } else { | |
1da177e4 LT |
1205 | ZFCP_LOG_INFO("Temporary port identifier 0x%x for " |
1206 | "port 0x%016Lx on adapter %s invalid. " | |
1207 | "This may happen occasionally.\n", | |
1208 | unit->port->handle, | |
1209 | unit->port->wwpn, | |
1210 | zfcp_get_busid_by_unit(unit)); | |
1211 | ZFCP_LOG_INFO("status qualifier:\n"); | |
1212 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO, | |
1213 | (char *) &new_fsf_req->qtcb->header. | |
1214 | fsf_status_qual, | |
1215 | sizeof (union fsf_status_qual)); | |
1216 | /* Let's hope this sorts out the mess */ | |
1217 | debug_text_event(new_fsf_req->adapter->erp_dbf, 1, | |
1218 | "fsf_s_phand_nv1"); | |
1219 | zfcp_erp_adapter_reopen(unit->port->adapter, 0); | |
1220 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1221 | } | |
1222 | break; | |
1223 | ||
1224 | case FSF_LUN_HANDLE_NOT_VALID: | |
1225 | if (status_qual >> 4 != status_qual % 0xf) { | |
1226 | /* 2 */ | |
1da177e4 LT |
1227 | debug_text_event(new_fsf_req->adapter->erp_dbf, 3, |
1228 | "fsf_s_lhand_nv0"); | |
1229 | /* | |
1230 | * In this case a command that was sent prior to a unit | |
1231 | * reopen was aborted (handles are different). | |
1232 | * This is fine. | |
1233 | */ | |
1234 | } else { | |
1da177e4 LT |
1235 | ZFCP_LOG_INFO |
1236 | ("Warning: Temporary LUN identifier 0x%x of LUN " | |
1237 | "0x%016Lx on port 0x%016Lx on adapter %s is " | |
1238 | "invalid. This may happen in rare cases. " | |
1239 | "Trying to re-establish link.\n", | |
1240 | unit->handle, | |
1241 | unit->fcp_lun, | |
1242 | unit->port->wwpn, | |
1243 | zfcp_get_busid_by_unit(unit)); | |
1244 | ZFCP_LOG_DEBUG("Status qualifier data:\n"); | |
1245 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
1246 | (char *) &new_fsf_req->qtcb->header. | |
1247 | fsf_status_qual, | |
1248 | sizeof (union fsf_status_qual)); | |
1249 | /* Let's hope this sorts out the mess */ | |
1250 | debug_text_event(new_fsf_req->adapter->erp_dbf, 1, | |
1251 | "fsf_s_lhand_nv1"); | |
1252 | zfcp_erp_port_reopen(unit->port, 0); | |
1253 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1254 | } | |
1255 | break; | |
1256 | ||
1257 | case FSF_FCP_COMMAND_DOES_NOT_EXIST: | |
1da177e4 LT |
1258 | retval = 0; |
1259 | debug_text_event(new_fsf_req->adapter->erp_dbf, 3, | |
1260 | "fsf_s_no_exist"); | |
1261 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED; | |
1262 | break; | |
1263 | ||
1264 | case FSF_PORT_BOXED: | |
1da177e4 LT |
1265 | ZFCP_LOG_INFO("Remote port 0x%016Lx on adapter %s needs to " |
1266 | "be reopened\n", unit->port->wwpn, | |
1267 | zfcp_get_busid_by_unit(unit)); | |
1268 | debug_text_event(new_fsf_req->adapter->erp_dbf, 2, | |
1269 | "fsf_s_pboxed"); | |
d736a27b | 1270 | zfcp_erp_port_boxed(unit->port); |
1da177e4 LT |
1271 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
1272 | | ZFCP_STATUS_FSFREQ_RETRY; | |
1273 | break; | |
1274 | ||
1275 | case FSF_LUN_BOXED: | |
1da177e4 LT |
1276 | ZFCP_LOG_INFO( |
1277 | "unit 0x%016Lx on port 0x%016Lx on adapter %s needs " | |
1278 | "to be reopened\n", | |
1279 | unit->fcp_lun, unit->port->wwpn, | |
1280 | zfcp_get_busid_by_unit(unit)); | |
1281 | debug_text_event(new_fsf_req->adapter->erp_dbf, 1, "fsf_s_lboxed"); | |
d736a27b | 1282 | zfcp_erp_unit_boxed(unit); |
1da177e4 LT |
1283 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
1284 | | ZFCP_STATUS_FSFREQ_RETRY; | |
1285 | break; | |
1286 | ||
1287 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
1288 | switch (new_fsf_req->qtcb->header.fsf_status_qual.word[0]) { |
1289 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
1290 | debug_text_event(new_fsf_req->adapter->erp_dbf, 1, |
1291 | "fsf_sq_ltest"); | |
65a8d4e1 | 1292 | zfcp_test_link(unit->port); |
1da177e4 LT |
1293 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1294 | break; | |
1295 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
1296 | /* SCSI stack will escalate */ |
1297 | debug_text_event(new_fsf_req->adapter->erp_dbf, 1, | |
1298 | "fsf_sq_ulp"); | |
1299 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1300 | break; | |
1301 | default: | |
1302 | ZFCP_LOG_NORMAL | |
1303 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
1304 | new_fsf_req->qtcb->header.fsf_status_qual.word[0]); | |
1305 | debug_text_event(new_fsf_req->adapter->erp_dbf, 0, | |
1306 | "fsf_sq_inval:"); | |
1307 | debug_exception(new_fsf_req->adapter->erp_dbf, 0, | |
1308 | &new_fsf_req->qtcb->header. | |
1309 | fsf_status_qual.word[0], sizeof (u32)); | |
1310 | break; | |
1311 | } | |
1312 | break; | |
1313 | ||
1314 | case FSF_GOOD: | |
1da177e4 LT |
1315 | retval = 0; |
1316 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED; | |
1317 | break; | |
1318 | ||
1319 | default: | |
1320 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
1321 | "(debug info 0x%x)\n", | |
1322 | new_fsf_req->qtcb->header.fsf_status); | |
1323 | debug_text_event(new_fsf_req->adapter->erp_dbf, 0, | |
1324 | "fsf_s_inval:"); | |
1325 | debug_exception(new_fsf_req->adapter->erp_dbf, 0, | |
1326 | &new_fsf_req->qtcb->header.fsf_status, | |
1327 | sizeof (u32)); | |
1328 | break; | |
1329 | } | |
1330 | skip_fsfstatus: | |
1331 | return retval; | |
1332 | } | |
1333 | ||
1334 | /** | |
1335 | * zfcp_use_one_sbal - checks whether req buffer and resp bother each fit into | |
1336 | * one SBALE | |
1337 | * Two scatter-gather lists are passed, one for the reqeust and one for the | |
1338 | * response. | |
1339 | */ | |
1340 | static inline int | |
1341 | zfcp_use_one_sbal(struct scatterlist *req, int req_count, | |
1342 | struct scatterlist *resp, int resp_count) | |
1343 | { | |
1344 | return ((req_count == 1) && | |
1345 | (resp_count == 1) && | |
1346 | (((unsigned long) zfcp_sg_to_address(&req[0]) & | |
1347 | PAGE_MASK) == | |
1348 | ((unsigned long) (zfcp_sg_to_address(&req[0]) + | |
1349 | req[0].length - 1) & PAGE_MASK)) && | |
1350 | (((unsigned long) zfcp_sg_to_address(&resp[0]) & | |
1351 | PAGE_MASK) == | |
1352 | ((unsigned long) (zfcp_sg_to_address(&resp[0]) + | |
1353 | resp[0].length - 1) & PAGE_MASK))); | |
1354 | } | |
1355 | ||
1356 | /** | |
1357 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) | |
1358 | * @ct: pointer to struct zfcp_send_ct which conatins all needed data for | |
1359 | * the request | |
1360 | * @pool: pointer to memory pool, if non-null this pool is used to allocate | |
1361 | * a struct zfcp_fsf_req | |
1362 | * @erp_action: pointer to erp_action, if non-null the Generic Service request | |
1363 | * is sent within error recovery | |
1364 | */ | |
1365 | int | |
1366 | zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, | |
1367 | struct zfcp_erp_action *erp_action) | |
1368 | { | |
1369 | volatile struct qdio_buffer_element *sbale; | |
1370 | struct zfcp_port *port; | |
1371 | struct zfcp_adapter *adapter; | |
1372 | struct zfcp_fsf_req *fsf_req; | |
1373 | unsigned long lock_flags; | |
1374 | int bytes; | |
1375 | int ret = 0; | |
1376 | ||
1377 | port = ct->port; | |
1378 | adapter = port->adapter; | |
1379 | ||
1380 | ret = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC, | |
1381 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
1382 | pool, &lock_flags, &fsf_req); | |
1383 | if (ret < 0) { | |
1384 | ZFCP_LOG_INFO("error: Could not create CT request (FC-GS) for " | |
1385 | "adapter: %s\n", | |
1386 | zfcp_get_busid_by_adapter(adapter)); | |
1387 | goto failed_req; | |
1388 | } | |
1389 | ||
1da177e4 LT |
1390 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1391 | if (zfcp_use_one_sbal(ct->req, ct->req_count, | |
1392 | ct->resp, ct->resp_count)){ | |
1393 | /* both request buffer and response buffer | |
1394 | fit into one sbale each */ | |
1395 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ; | |
1396 | sbale[2].addr = zfcp_sg_to_address(&ct->req[0]); | |
1397 | sbale[2].length = ct->req[0].length; | |
1398 | sbale[3].addr = zfcp_sg_to_address(&ct->resp[0]); | |
1399 | sbale[3].length = ct->resp[0].length; | |
1400 | sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY; | |
aef4a983 | 1401 | } else if (adapter->adapter_features & |
1da177e4 LT |
1402 | FSF_FEATURE_ELS_CT_CHAINED_SBALS) { |
1403 | /* try to use chained SBALs */ | |
1404 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, | |
1405 | SBAL_FLAGS0_TYPE_WRITE_READ, | |
1406 | ct->req, ct->req_count, | |
1407 | ZFCP_MAX_SBALS_PER_CT_REQ); | |
1408 | if (bytes <= 0) { | |
1409 | ZFCP_LOG_INFO("error: creation of CT request failed " | |
1410 | "on adapter %s\n", | |
1411 | zfcp_get_busid_by_adapter(adapter)); | |
1412 | if (bytes == 0) | |
1413 | ret = -ENOMEM; | |
1414 | else | |
1415 | ret = bytes; | |
1416 | ||
1417 | goto failed_send; | |
1418 | } | |
1419 | fsf_req->qtcb->bottom.support.req_buf_length = bytes; | |
1420 | fsf_req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; | |
1421 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, | |
1422 | SBAL_FLAGS0_TYPE_WRITE_READ, | |
1423 | ct->resp, ct->resp_count, | |
1424 | ZFCP_MAX_SBALS_PER_CT_REQ); | |
1425 | if (bytes <= 0) { | |
1426 | ZFCP_LOG_INFO("error: creation of CT request failed " | |
1427 | "on adapter %s\n", | |
1428 | zfcp_get_busid_by_adapter(adapter)); | |
1429 | if (bytes == 0) | |
1430 | ret = -ENOMEM; | |
1431 | else | |
1432 | ret = bytes; | |
1433 | ||
1434 | goto failed_send; | |
1435 | } | |
1436 | fsf_req->qtcb->bottom.support.resp_buf_length = bytes; | |
1437 | } else { | |
1438 | /* reject send generic request */ | |
1439 | ZFCP_LOG_INFO( | |
1440 | "error: microcode does not support chained SBALs," | |
1441 | "CT request too big (adapter %s)\n", | |
1442 | zfcp_get_busid_by_adapter(adapter)); | |
1443 | ret = -EOPNOTSUPP; | |
1444 | goto failed_send; | |
1445 | } | |
1446 | ||
1447 | /* settings in QTCB */ | |
1448 | fsf_req->qtcb->header.port_handle = port->handle; | |
06506d00 AH |
1449 | fsf_req->qtcb->bottom.support.service_class = |
1450 | ZFCP_FC_SERVICE_CLASS_DEFAULT; | |
1da177e4 | 1451 | fsf_req->qtcb->bottom.support.timeout = ct->timeout; |
059c97d0 | 1452 | fsf_req->data = (unsigned long) ct; |
1da177e4 | 1453 | |
8a36e453 MS |
1454 | zfcp_san_dbf_event_ct_request(fsf_req); |
1455 | ||
2abbe866 AH |
1456 | if (erp_action) { |
1457 | erp_action->fsf_req = fsf_req; | |
1458 | fsf_req->erp_action = erp_action; | |
1459 | zfcp_erp_start_timer(fsf_req); | |
1460 | } else | |
1461 | zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1462 | ||
1463 | ret = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
1464 | if (ret) { |
1465 | ZFCP_LOG_DEBUG("error: initiation of CT request failed " | |
1466 | "(adapter %s, port 0x%016Lx)\n", | |
1467 | zfcp_get_busid_by_adapter(adapter), port->wwpn); | |
1468 | goto failed_send; | |
1469 | } | |
1470 | ||
1471 | ZFCP_LOG_DEBUG("CT request initiated (adapter %s, port 0x%016Lx)\n", | |
1472 | zfcp_get_busid_by_adapter(adapter), port->wwpn); | |
1473 | goto out; | |
1474 | ||
1475 | failed_send: | |
1476 | zfcp_fsf_req_free(fsf_req); | |
1477 | if (erp_action != NULL) { | |
1478 | erp_action->fsf_req = NULL; | |
1479 | } | |
1480 | failed_req: | |
1481 | out: | |
1482 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, | |
1483 | lock_flags); | |
1484 | return ret; | |
1485 | } | |
1486 | ||
1487 | /** | |
1488 | * zfcp_fsf_send_ct_handler - handler for Generic Service requests | |
1489 | * @fsf_req: pointer to struct zfcp_fsf_req | |
1490 | * | |
059c97d0 AH |
1491 | * Data specific for the Generic Service request is passed using |
1492 | * fsf_req->data. There we find the pointer to struct zfcp_send_ct. | |
1493 | * Usually a specific handler for the CT request is called which is | |
1494 | * found in this structure. | |
1da177e4 LT |
1495 | */ |
1496 | static int | |
1497 | zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *fsf_req) | |
1498 | { | |
1499 | struct zfcp_port *port; | |
1500 | struct zfcp_adapter *adapter; | |
1501 | struct zfcp_send_ct *send_ct; | |
1502 | struct fsf_qtcb_header *header; | |
1503 | struct fsf_qtcb_bottom_support *bottom; | |
1504 | int retval = -EINVAL; | |
1505 | u16 subtable, rule, counter; | |
1506 | ||
1507 | adapter = fsf_req->adapter; | |
059c97d0 | 1508 | send_ct = (struct zfcp_send_ct *) fsf_req->data; |
1da177e4 LT |
1509 | port = send_ct->port; |
1510 | header = &fsf_req->qtcb->header; | |
1511 | bottom = &fsf_req->qtcb->bottom.support; | |
1512 | ||
1513 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
1514 | goto skip_fsfstatus; | |
1515 | ||
1516 | /* evaluate FSF status in QTCB */ | |
1517 | switch (header->fsf_status) { | |
1518 | ||
1519 | case FSF_GOOD: | |
8a36e453 | 1520 | zfcp_san_dbf_event_ct_response(fsf_req); |
1da177e4 LT |
1521 | retval = 0; |
1522 | break; | |
1523 | ||
1524 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: | |
06506d00 AH |
1525 | ZFCP_LOG_INFO("error: adapter %s does not support fc " |
1526 | "class %d.\n", | |
1527 | zfcp_get_busid_by_port(port), | |
1528 | ZFCP_FC_SERVICE_CLASS_DEFAULT); | |
1da177e4 LT |
1529 | /* stop operation for this adapter */ |
1530 | debug_text_exception(adapter->erp_dbf, 0, "fsf_s_class_nsup"); | |
1531 | zfcp_erp_adapter_shutdown(adapter, 0); | |
1532 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1533 | break; | |
1534 | ||
1535 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
1536 | switch (header->fsf_status_qual.word[0]){ |
1537 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
1538 | /* reopening link to port */ |
1539 | debug_text_event(adapter->erp_dbf, 1, "fsf_sq_ltest"); | |
1540 | zfcp_test_link(port); | |
1541 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1542 | break; | |
1543 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
1544 | /* ERP strategy will escalate */ |
1545 | debug_text_event(adapter->erp_dbf, 1, "fsf_sq_ulp"); | |
1546 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1547 | break; | |
1548 | default: | |
1549 | ZFCP_LOG_INFO("bug: Wrong status qualifier 0x%x " | |
1550 | "arrived.\n", | |
1551 | header->fsf_status_qual.word[0]); | |
1552 | break; | |
1553 | } | |
1554 | break; | |
1555 | ||
1556 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
1557 | ZFCP_LOG_NORMAL("access denied, cannot send generic service " |
1558 | "command (adapter %s, port d_id=0x%08x)\n", | |
1559 | zfcp_get_busid_by_port(port), port->d_id); | |
1560 | for (counter = 0; counter < 2; counter++) { | |
1561 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
1562 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
1563 | switch (subtable) { | |
1564 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
1565 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
1566 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
1567 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
1568 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
1569 | zfcp_act_subtable_type[subtable], rule); | |
1570 | break; | |
1571 | } | |
1572 | } | |
1573 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_access"); | |
1574 | zfcp_erp_port_access_denied(port); | |
1575 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1576 | break; | |
1577 | ||
1578 | case FSF_GENERIC_COMMAND_REJECTED: | |
1da177e4 LT |
1579 | ZFCP_LOG_INFO("generic service command rejected " |
1580 | "(adapter %s, port d_id=0x%08x)\n", | |
1581 | zfcp_get_busid_by_port(port), port->d_id); | |
1582 | ZFCP_LOG_INFO("status qualifier:\n"); | |
1583 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO, | |
1584 | (char *) &header->fsf_status_qual, | |
1585 | sizeof (union fsf_status_qual)); | |
1586 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_gcom_rej"); | |
1587 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1588 | break; | |
1589 | ||
1590 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
1591 | ZFCP_LOG_DEBUG("Temporary port identifier 0x%x for port " |
1592 | "0x%016Lx on adapter %s invalid. This may " | |
1593 | "happen occasionally.\n", port->handle, | |
1594 | port->wwpn, zfcp_get_busid_by_port(port)); | |
1595 | ZFCP_LOG_INFO("status qualifier:\n"); | |
1596 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO, | |
1597 | (char *) &header->fsf_status_qual, | |
1598 | sizeof (union fsf_status_qual)); | |
1599 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_phandle_nv"); | |
1600 | zfcp_erp_adapter_reopen(adapter, 0); | |
1601 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1602 | break; | |
1603 | ||
1604 | case FSF_PORT_BOXED: | |
1da177e4 LT |
1605 | ZFCP_LOG_INFO("port needs to be reopened " |
1606 | "(adapter %s, port d_id=0x%08x)\n", | |
1607 | zfcp_get_busid_by_port(port), port->d_id); | |
1608 | debug_text_event(adapter->erp_dbf, 2, "fsf_s_pboxed"); | |
d736a27b | 1609 | zfcp_erp_port_boxed(port); |
1da177e4 LT |
1610 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
1611 | | ZFCP_STATUS_FSFREQ_RETRY; | |
1612 | break; | |
1613 | ||
1614 | /* following states should never occure, all cases avoided | |
1615 | in zfcp_fsf_send_ct - but who knows ... */ | |
1616 | case FSF_PAYLOAD_SIZE_MISMATCH: | |
1da177e4 LT |
1617 | ZFCP_LOG_INFO("payload size mismatch (adapter: %s, " |
1618 | "req_buf_length=%d, resp_buf_length=%d)\n", | |
1619 | zfcp_get_busid_by_adapter(adapter), | |
1620 | bottom->req_buf_length, bottom->resp_buf_length); | |
1621 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1622 | break; | |
1623 | case FSF_REQUEST_SIZE_TOO_LARGE: | |
1da177e4 LT |
1624 | ZFCP_LOG_INFO("request size too large (adapter: %s, " |
1625 | "req_buf_length=%d)\n", | |
1626 | zfcp_get_busid_by_adapter(adapter), | |
1627 | bottom->req_buf_length); | |
1628 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1629 | break; | |
1630 | case FSF_RESPONSE_SIZE_TOO_LARGE: | |
1da177e4 LT |
1631 | ZFCP_LOG_INFO("response size too large (adapter: %s, " |
1632 | "resp_buf_length=%d)\n", | |
1633 | zfcp_get_busid_by_adapter(adapter), | |
1634 | bottom->resp_buf_length); | |
1635 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1636 | break; | |
1637 | case FSF_SBAL_MISMATCH: | |
1da177e4 LT |
1638 | ZFCP_LOG_INFO("SBAL mismatch (adapter: %s, req_buf_length=%d, " |
1639 | "resp_buf_length=%d)\n", | |
1640 | zfcp_get_busid_by_adapter(adapter), | |
1641 | bottom->req_buf_length, bottom->resp_buf_length); | |
1642 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1643 | break; | |
1644 | ||
1645 | default: | |
1646 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
1647 | "(debug info 0x%x)\n", header->fsf_status); | |
1648 | debug_text_event(adapter->erp_dbf, 0, "fsf_sq_inval:"); | |
1649 | debug_exception(adapter->erp_dbf, 0, | |
1650 | &header->fsf_status_qual.word[0], sizeof (u32)); | |
1651 | break; | |
1652 | } | |
1653 | ||
1654 | skip_fsfstatus: | |
1655 | send_ct->status = retval; | |
1656 | ||
1657 | if (send_ct->handler != NULL) | |
1658 | send_ct->handler(send_ct->handler_data); | |
1659 | ||
1660 | return retval; | |
1661 | } | |
1662 | ||
1663 | /** | |
1664 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) | |
1665 | * @els: pointer to struct zfcp_send_els which contains all needed data for | |
1666 | * the command. | |
1667 | */ | |
1668 | int | |
1669 | zfcp_fsf_send_els(struct zfcp_send_els *els) | |
1670 | { | |
1671 | volatile struct qdio_buffer_element *sbale; | |
1672 | struct zfcp_fsf_req *fsf_req; | |
13e1e1f0 | 1673 | u32 d_id; |
1da177e4 LT |
1674 | struct zfcp_adapter *adapter; |
1675 | unsigned long lock_flags; | |
1676 | int bytes; | |
1677 | int ret = 0; | |
1678 | ||
1679 | d_id = els->d_id; | |
1680 | adapter = els->adapter; | |
1681 | ||
1682 | ret = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS, | |
1683 | ZFCP_REQ_AUTO_CLEANUP, | |
1684 | NULL, &lock_flags, &fsf_req); | |
1685 | if (ret < 0) { | |
1686 | ZFCP_LOG_INFO("error: creation of ELS request failed " | |
1687 | "(adapter %s, port d_id: 0x%08x)\n", | |
1688 | zfcp_get_busid_by_adapter(adapter), d_id); | |
1689 | goto failed_req; | |
1690 | } | |
1691 | ||
1692 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
1693 | if (zfcp_use_one_sbal(els->req, els->req_count, | |
1694 | els->resp, els->resp_count)){ | |
1695 | /* both request buffer and response buffer | |
1696 | fit into one sbale each */ | |
1697 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ; | |
1698 | sbale[2].addr = zfcp_sg_to_address(&els->req[0]); | |
1699 | sbale[2].length = els->req[0].length; | |
1700 | sbale[3].addr = zfcp_sg_to_address(&els->resp[0]); | |
1701 | sbale[3].length = els->resp[0].length; | |
1702 | sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY; | |
aef4a983 | 1703 | } else if (adapter->adapter_features & |
1da177e4 LT |
1704 | FSF_FEATURE_ELS_CT_CHAINED_SBALS) { |
1705 | /* try to use chained SBALs */ | |
1706 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, | |
1707 | SBAL_FLAGS0_TYPE_WRITE_READ, | |
1708 | els->req, els->req_count, | |
1709 | ZFCP_MAX_SBALS_PER_ELS_REQ); | |
1710 | if (bytes <= 0) { | |
1711 | ZFCP_LOG_INFO("error: creation of ELS request failed " | |
1712 | "(adapter %s, port d_id: 0x%08x)\n", | |
1713 | zfcp_get_busid_by_adapter(adapter), d_id); | |
1714 | if (bytes == 0) { | |
1715 | ret = -ENOMEM; | |
1716 | } else { | |
1717 | ret = bytes; | |
1718 | } | |
1719 | goto failed_send; | |
1720 | } | |
1721 | fsf_req->qtcb->bottom.support.req_buf_length = bytes; | |
1722 | fsf_req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; | |
1723 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, | |
1724 | SBAL_FLAGS0_TYPE_WRITE_READ, | |
1725 | els->resp, els->resp_count, | |
1726 | ZFCP_MAX_SBALS_PER_ELS_REQ); | |
1727 | if (bytes <= 0) { | |
1728 | ZFCP_LOG_INFO("error: creation of ELS request failed " | |
1729 | "(adapter %s, port d_id: 0x%08x)\n", | |
1730 | zfcp_get_busid_by_adapter(adapter), d_id); | |
1731 | if (bytes == 0) { | |
1732 | ret = -ENOMEM; | |
1733 | } else { | |
1734 | ret = bytes; | |
1735 | } | |
1736 | goto failed_send; | |
1737 | } | |
1738 | fsf_req->qtcb->bottom.support.resp_buf_length = bytes; | |
1739 | } else { | |
1740 | /* reject request */ | |
1741 | ZFCP_LOG_INFO("error: microcode does not support chained SBALs" | |
1742 | ", ELS request too big (adapter %s, " | |
1743 | "port d_id: 0x%08x)\n", | |
1744 | zfcp_get_busid_by_adapter(adapter), d_id); | |
1745 | ret = -EOPNOTSUPP; | |
1746 | goto failed_send; | |
1747 | } | |
1748 | ||
1749 | /* settings in QTCB */ | |
1750 | fsf_req->qtcb->bottom.support.d_id = d_id; | |
06506d00 AH |
1751 | fsf_req->qtcb->bottom.support.service_class = |
1752 | ZFCP_FC_SERVICE_CLASS_DEFAULT; | |
1da177e4 | 1753 | fsf_req->qtcb->bottom.support.timeout = ZFCP_ELS_TIMEOUT; |
059c97d0 | 1754 | fsf_req->data = (unsigned long) els; |
1da177e4 LT |
1755 | |
1756 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
1757 | ||
8a36e453 MS |
1758 | zfcp_san_dbf_event_els_request(fsf_req); |
1759 | ||
2abbe866 AH |
1760 | zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); |
1761 | ret = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
1762 | if (ret) { |
1763 | ZFCP_LOG_DEBUG("error: initiation of ELS request failed " | |
1764 | "(adapter %s, port d_id: 0x%08x)\n", | |
1765 | zfcp_get_busid_by_adapter(adapter), d_id); | |
1766 | goto failed_send; | |
1767 | } | |
1768 | ||
1769 | ZFCP_LOG_DEBUG("ELS request initiated (adapter %s, port d_id: " | |
1770 | "0x%08x)\n", zfcp_get_busid_by_adapter(adapter), d_id); | |
1771 | goto out; | |
1772 | ||
1773 | failed_send: | |
1774 | zfcp_fsf_req_free(fsf_req); | |
1775 | ||
1776 | failed_req: | |
1777 | out: | |
1778 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, | |
1779 | lock_flags); | |
1780 | ||
1781 | return ret; | |
1782 | } | |
1783 | ||
1784 | /** | |
1785 | * zfcp_fsf_send_els_handler - handler for ELS commands | |
1786 | * @fsf_req: pointer to struct zfcp_fsf_req | |
1787 | * | |
059c97d0 AH |
1788 | * Data specific for the ELS command is passed using |
1789 | * fsf_req->data. There we find the pointer to struct zfcp_send_els. | |
1790 | * Usually a specific handler for the ELS command is called which is | |
1791 | * found in this structure. | |
1da177e4 LT |
1792 | */ |
1793 | static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *fsf_req) | |
1794 | { | |
1795 | struct zfcp_adapter *adapter; | |
1da177e4 | 1796 | struct zfcp_port *port; |
13e1e1f0 | 1797 | u32 d_id; |
1da177e4 LT |
1798 | struct fsf_qtcb_header *header; |
1799 | struct fsf_qtcb_bottom_support *bottom; | |
1800 | struct zfcp_send_els *send_els; | |
1801 | int retval = -EINVAL; | |
1802 | u16 subtable, rule, counter; | |
1803 | ||
059c97d0 | 1804 | send_els = (struct zfcp_send_els *) fsf_req->data; |
1da177e4 | 1805 | adapter = send_els->adapter; |
64b29a13 | 1806 | port = send_els->port; |
1da177e4 LT |
1807 | d_id = send_els->d_id; |
1808 | header = &fsf_req->qtcb->header; | |
1809 | bottom = &fsf_req->qtcb->bottom.support; | |
1810 | ||
1811 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
1812 | goto skip_fsfstatus; | |
1813 | ||
1814 | switch (header->fsf_status) { | |
1815 | ||
1816 | case FSF_GOOD: | |
8a36e453 | 1817 | zfcp_san_dbf_event_els_response(fsf_req); |
1da177e4 LT |
1818 | retval = 0; |
1819 | break; | |
1820 | ||
1821 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: | |
06506d00 AH |
1822 | ZFCP_LOG_INFO("error: adapter %s does not support fc " |
1823 | "class %d.\n", | |
1824 | zfcp_get_busid_by_adapter(adapter), | |
1825 | ZFCP_FC_SERVICE_CLASS_DEFAULT); | |
1da177e4 LT |
1826 | /* stop operation for this adapter */ |
1827 | debug_text_exception(adapter->erp_dbf, 0, "fsf_s_class_nsup"); | |
1828 | zfcp_erp_adapter_shutdown(adapter, 0); | |
1829 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1830 | break; | |
1831 | ||
1832 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
1833 | switch (header->fsf_status_qual.word[0]){ |
1834 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1835 | debug_text_event(adapter->erp_dbf, 1, "fsf_sq_ltest"); |
64b29a13 AH |
1836 | if (port && (send_els->ls_code != ZFCP_LS_ADISC)) |
1837 | zfcp_test_link(port); | |
1da177e4 LT |
1838 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1839 | break; | |
1840 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
1841 | debug_text_event(adapter->erp_dbf, 1, "fsf_sq_ulp"); |
1842 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1843 | retval = | |
1844 | zfcp_handle_els_rjt(header->fsf_status_qual.word[1], | |
1845 | (struct zfcp_ls_rjt_par *) | |
1846 | &header->fsf_status_qual.word[2]); | |
1847 | break; | |
1848 | case FSF_SQ_RETRY_IF_POSSIBLE: | |
1da177e4 LT |
1849 | debug_text_event(adapter->erp_dbf, 1, "fsf_sq_retry"); |
1850 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1851 | break; | |
1852 | default: | |
1853 | ZFCP_LOG_INFO("bug: Wrong status qualifier 0x%x\n", | |
1854 | header->fsf_status_qual.word[0]); | |
1855 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO, | |
1856 | (char*)header->fsf_status_qual.word, 16); | |
1857 | } | |
1858 | break; | |
1859 | ||
1860 | case FSF_ELS_COMMAND_REJECTED: | |
1da177e4 LT |
1861 | ZFCP_LOG_INFO("ELS has been rejected because command filter " |
1862 | "prohibited sending " | |
1863 | "(adapter: %s, port d_id: 0x%08x)\n", | |
1864 | zfcp_get_busid_by_adapter(adapter), d_id); | |
1865 | ||
1866 | break; | |
1867 | ||
1868 | case FSF_PAYLOAD_SIZE_MISMATCH: | |
1da177e4 LT |
1869 | ZFCP_LOG_INFO( |
1870 | "ELS request size and ELS response size must be either " | |
1871 | "both 0, or both greater than 0 " | |
1872 | "(adapter: %s, req_buf_length=%d resp_buf_length=%d)\n", | |
1873 | zfcp_get_busid_by_adapter(adapter), | |
1874 | bottom->req_buf_length, | |
1875 | bottom->resp_buf_length); | |
1876 | break; | |
1877 | ||
1878 | case FSF_REQUEST_SIZE_TOO_LARGE: | |
1da177e4 LT |
1879 | ZFCP_LOG_INFO( |
1880 | "Length of the ELS request buffer, " | |
1881 | "specified in QTCB bottom, " | |
1882 | "exceeds the size of the buffers " | |
1883 | "that have been allocated for ELS request data " | |
1884 | "(adapter: %s, req_buf_length=%d)\n", | |
1885 | zfcp_get_busid_by_adapter(adapter), | |
1886 | bottom->req_buf_length); | |
1887 | break; | |
1888 | ||
1889 | case FSF_RESPONSE_SIZE_TOO_LARGE: | |
1da177e4 LT |
1890 | ZFCP_LOG_INFO( |
1891 | "Length of the ELS response buffer, " | |
1892 | "specified in QTCB bottom, " | |
1893 | "exceeds the size of the buffers " | |
1894 | "that have been allocated for ELS response data " | |
1895 | "(adapter: %s, resp_buf_length=%d)\n", | |
1896 | zfcp_get_busid_by_adapter(adapter), | |
1897 | bottom->resp_buf_length); | |
1898 | break; | |
1899 | ||
1900 | case FSF_SBAL_MISMATCH: | |
1901 | /* should never occure, avoided in zfcp_fsf_send_els */ | |
1da177e4 LT |
1902 | ZFCP_LOG_INFO("SBAL mismatch (adapter: %s, req_buf_length=%d, " |
1903 | "resp_buf_length=%d)\n", | |
1904 | zfcp_get_busid_by_adapter(adapter), | |
1905 | bottom->req_buf_length, bottom->resp_buf_length); | |
1906 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1907 | break; | |
1908 | ||
1909 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
1910 | ZFCP_LOG_NORMAL("access denied, cannot send ELS command " |
1911 | "(adapter %s, port d_id=0x%08x)\n", | |
1912 | zfcp_get_busid_by_adapter(adapter), d_id); | |
1913 | for (counter = 0; counter < 2; counter++) { | |
1914 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
1915 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
1916 | switch (subtable) { | |
1917 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
1918 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
1919 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
1920 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
1921 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
1922 | zfcp_act_subtable_type[subtable], rule); | |
1923 | break; | |
1924 | } | |
1925 | } | |
1926 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_access"); | |
1da177e4 LT |
1927 | if (port != NULL) |
1928 | zfcp_erp_port_access_denied(port); | |
1da177e4 LT |
1929 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1930 | break; | |
1931 | ||
1932 | default: | |
1933 | ZFCP_LOG_NORMAL( | |
1934 | "bug: An unknown FSF Status was presented " | |
1935 | "(adapter: %s, fsf_status=0x%08x)\n", | |
1936 | zfcp_get_busid_by_adapter(adapter), | |
1937 | header->fsf_status); | |
1938 | debug_text_event(adapter->erp_dbf, 0, "fsf_sq_inval"); | |
1939 | debug_exception(adapter->erp_dbf, 0, | |
1940 | &header->fsf_status_qual.word[0], sizeof(u32)); | |
1941 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1942 | break; | |
1943 | } | |
1944 | ||
1945 | skip_fsfstatus: | |
1946 | send_els->status = retval; | |
1947 | ||
1948 | if (send_els->handler != 0) | |
1949 | send_els->handler(send_els->handler_data); | |
1950 | ||
1951 | return retval; | |
1952 | } | |
1953 | ||
1da177e4 LT |
1954 | int |
1955 | zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) | |
1956 | { | |
1957 | volatile struct qdio_buffer_element *sbale; | |
2abbe866 | 1958 | struct zfcp_fsf_req *fsf_req; |
1da177e4 LT |
1959 | unsigned long lock_flags; |
1960 | int retval = 0; | |
1961 | ||
1962 | /* setup new FSF request */ | |
1963 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
1964 | FSF_QTCB_EXCHANGE_CONFIG_DATA, | |
1965 | ZFCP_REQ_AUTO_CLEANUP, | |
1966 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 1967 | &lock_flags, &fsf_req); |
1da177e4 LT |
1968 | if (retval < 0) { |
1969 | ZFCP_LOG_INFO("error: Could not create exchange configuration " | |
1970 | "data request for adapter %s.\n", | |
1971 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
1972 | goto out; | |
1973 | } | |
1974 | ||
2abbe866 | 1975 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
1976 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1977 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1978 | ||
2abbe866 | 1979 | fsf_req->qtcb->bottom.config.feature_selection = |
aef4a983 MS |
1980 | FSF_FEATURE_CFDC | |
1981 | FSF_FEATURE_LUN_SHARING | | |
9eb69aff | 1982 | FSF_FEATURE_NOTIFICATION_LOST | |
aef4a983 | 1983 | FSF_FEATURE_UPDATE_ALERT; |
2abbe866 AH |
1984 | fsf_req->erp_action = erp_action; |
1985 | erp_action->fsf_req = fsf_req; | |
1da177e4 | 1986 | |
2abbe866 AH |
1987 | zfcp_erp_start_timer(fsf_req); |
1988 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
1989 | if (retval) { |
1990 | ZFCP_LOG_INFO | |
1991 | ("error: Could not send exchange configuration data " | |
1992 | "command on the adapter %s\n", | |
1993 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2abbe866 | 1994 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
1995 | erp_action->fsf_req = NULL; |
1996 | goto out; | |
1997 | } | |
1998 | ||
1999 | ZFCP_LOG_DEBUG("exchange configuration data request initiated " | |
2000 | "(adapter %s)\n", | |
2001 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2002 | ||
2003 | out: | |
2004 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
2005 | lock_flags); | |
2006 | return retval; | |
2007 | } | |
2008 | ||
2009 | /** | |
2010 | * zfcp_fsf_exchange_config_evaluate | |
2011 | * @fsf_req: fsf_req which belongs to xchg config data request | |
2012 | * @xchg_ok: specifies if xchg config data was incomplete or complete (0/1) | |
2013 | * | |
2014 | * returns: -EIO on error, 0 otherwise | |
2015 | */ | |
2016 | static int | |
2017 | zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *fsf_req, int xchg_ok) | |
2018 | { | |
2019 | struct fsf_qtcb_bottom_config *bottom; | |
2020 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
13e1e1f0 | 2021 | struct Scsi_Host *shost = adapter->scsi_host; |
1da177e4 LT |
2022 | |
2023 | bottom = &fsf_req->qtcb->bottom.config; | |
2024 | ZFCP_LOG_DEBUG("low/high QTCB version 0x%x/0x%x of FSF\n", | |
2025 | bottom->low_qtcb_version, bottom->high_qtcb_version); | |
2026 | adapter->fsf_lic_version = bottom->lic_version; | |
aef4a983 MS |
2027 | adapter->adapter_features = bottom->adapter_features; |
2028 | adapter->connection_features = bottom->connection_features; | |
6f71d9bc JB |
2029 | adapter->peer_wwpn = 0; |
2030 | adapter->peer_wwnn = 0; | |
2031 | adapter->peer_d_id = 0; | |
1da177e4 LT |
2032 | |
2033 | if (xchg_ok) { | |
13e1e1f0 AH |
2034 | fc_host_node_name(shost) = bottom->nport_serv_param.wwnn; |
2035 | fc_host_port_name(shost) = bottom->nport_serv_param.wwpn; | |
2036 | fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK; | |
2037 | fc_host_speed(shost) = bottom->fc_link_speed; | |
2038 | fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3; | |
1da177e4 | 2039 | adapter->hydra_version = bottom->adapter_type; |
ad757cdf AH |
2040 | if (fc_host_permanent_port_name(shost) == -1) |
2041 | fc_host_permanent_port_name(shost) = | |
2042 | fc_host_port_name(shost); | |
2043 | if (bottom->fc_topology == FSF_TOPO_P2P) { | |
2044 | adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK; | |
2045 | adapter->peer_wwpn = bottom->plogi_payload.wwpn; | |
2046 | adapter->peer_wwnn = bottom->plogi_payload.wwnn; | |
2047 | fc_host_port_type(shost) = FC_PORTTYPE_PTP; | |
2048 | } else if (bottom->fc_topology == FSF_TOPO_FABRIC) | |
2049 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
2050 | else if (bottom->fc_topology == FSF_TOPO_AL) | |
2051 | fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; | |
2052 | else | |
2053 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; | |
1da177e4 | 2054 | } else { |
13e1e1f0 AH |
2055 | fc_host_node_name(shost) = 0; |
2056 | fc_host_port_name(shost) = 0; | |
2057 | fc_host_port_id(shost) = 0; | |
2058 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; | |
ad757cdf | 2059 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; |
1da177e4 LT |
2060 | adapter->hydra_version = 0; |
2061 | } | |
2062 | ||
aef4a983 | 2063 | if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) { |
1da177e4 | 2064 | adapter->hardware_version = bottom->hardware_version; |
13e1e1f0 AH |
2065 | memcpy(fc_host_serial_number(shost), bottom->serial_number, |
2066 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
2067 | EBCASC(fc_host_serial_number(shost), | |
2068 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
1da177e4 LT |
2069 | } |
2070 | ||
6f71d9bc | 2071 | ZFCP_LOG_NORMAL("The adapter %s reported the following characteristics:\n" |
13e1e1f0 AH |
2072 | "WWNN 0x%016Lx, " |
2073 | "WWPN 0x%016Lx, " | |
2074 | "S_ID 0x%08x,\n" | |
2075 | "adapter version 0x%x, " | |
2076 | "LIC version 0x%x, " | |
2077 | "FC link speed %d Gb/s\n", | |
2078 | zfcp_get_busid_by_adapter(adapter), | |
2079 | (wwn_t) fc_host_node_name(shost), | |
2080 | (wwn_t) fc_host_port_name(shost), | |
2081 | fc_host_port_id(shost), | |
2082 | adapter->hydra_version, | |
2083 | adapter->fsf_lic_version, | |
2084 | fc_host_speed(shost)); | |
1da177e4 LT |
2085 | if (ZFCP_QTCB_VERSION < bottom->low_qtcb_version) { |
2086 | ZFCP_LOG_NORMAL("error: the adapter %s " | |
2087 | "only supports newer control block " | |
2088 | "versions in comparison to this device " | |
2089 | "driver (try updated device driver)\n", | |
2090 | zfcp_get_busid_by_adapter(adapter)); | |
2091 | debug_text_event(adapter->erp_dbf, 0, "low_qtcb_ver"); | |
2092 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2093 | return -EIO; | |
2094 | } | |
2095 | if (ZFCP_QTCB_VERSION > bottom->high_qtcb_version) { | |
2096 | ZFCP_LOG_NORMAL("error: the adapter %s " | |
2097 | "only supports older control block " | |
2098 | "versions than this device driver uses" | |
2099 | "(consider a microcode upgrade)\n", | |
2100 | zfcp_get_busid_by_adapter(adapter)); | |
2101 | debug_text_event(adapter->erp_dbf, 0, "high_qtcb_ver"); | |
2102 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2103 | return -EIO; | |
2104 | } | |
2105 | return 0; | |
2106 | } | |
2107 | ||
2108 | /* | |
2109 | * function: zfcp_fsf_exchange_config_data_handler | |
2110 | * | |
2111 | * purpose: is called for finished Exchange Configuration Data command | |
2112 | * | |
2113 | * returns: | |
2114 | */ | |
2115 | static int | |
2116 | zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *fsf_req) | |
2117 | { | |
2118 | struct fsf_qtcb_bottom_config *bottom; | |
2119 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
aef4a983 | 2120 | struct fsf_qtcb *qtcb = fsf_req->qtcb; |
1da177e4 LT |
2121 | |
2122 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
2123 | return -EIO; | |
2124 | ||
aef4a983 | 2125 | switch (qtcb->header.fsf_status) { |
1da177e4 LT |
2126 | |
2127 | case FSF_GOOD: | |
1da177e4 LT |
2128 | if (zfcp_fsf_exchange_config_evaluate(fsf_req, 1)) |
2129 | return -EIO; | |
2130 | ||
ad757cdf AH |
2131 | switch (fc_host_port_type(adapter->scsi_host)) { |
2132 | case FC_PORTTYPE_PTP: | |
6f71d9bc JB |
2133 | ZFCP_LOG_NORMAL("Point-to-Point fibrechannel " |
2134 | "configuration detected at adapter %s\n" | |
2135 | "Peer WWNN 0x%016llx, " | |
2136 | "peer WWPN 0x%016llx, " | |
2137 | "peer d_id 0x%06x\n", | |
2138 | zfcp_get_busid_by_adapter(adapter), | |
2139 | adapter->peer_wwnn, | |
2140 | adapter->peer_wwpn, | |
2141 | adapter->peer_d_id); | |
1da177e4 LT |
2142 | debug_text_event(fsf_req->adapter->erp_dbf, 0, |
2143 | "top-p-to-p"); | |
6f71d9bc | 2144 | break; |
ad757cdf | 2145 | case FC_PORTTYPE_NLPORT: |
1da177e4 LT |
2146 | ZFCP_LOG_NORMAL("error: Arbitrated loop fibrechannel " |
2147 | "topology detected at adapter %s " | |
2148 | "unsupported, shutting down adapter\n", | |
2149 | zfcp_get_busid_by_adapter(adapter)); | |
2150 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
2151 | "top-al"); | |
2152 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2153 | return -EIO; | |
ad757cdf | 2154 | case FC_PORTTYPE_NPORT: |
aef4a983 | 2155 | ZFCP_LOG_NORMAL("Switched fabric fibrechannel " |
1da177e4 LT |
2156 | "network detected at adapter %s.\n", |
2157 | zfcp_get_busid_by_adapter(adapter)); | |
2158 | break; | |
2159 | default: | |
2160 | ZFCP_LOG_NORMAL("bug: The fibrechannel topology " | |
2161 | "reported by the exchange " | |
2162 | "configuration command for " | |
2163 | "the adapter %s is not " | |
2164 | "of a type known to the zfcp " | |
2165 | "driver, shutting down adapter\n", | |
2166 | zfcp_get_busid_by_adapter(adapter)); | |
2167 | debug_text_exception(fsf_req->adapter->erp_dbf, 0, | |
2168 | "unknown-topo"); | |
2169 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2170 | return -EIO; | |
2171 | } | |
aef4a983 | 2172 | bottom = &qtcb->bottom.config; |
1da177e4 LT |
2173 | if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { |
2174 | ZFCP_LOG_NORMAL("bug: Maximum QTCB size (%d bytes) " | |
2175 | "allowed by the adapter %s " | |
2176 | "is lower than the minimum " | |
2177 | "required by the driver (%ld bytes).\n", | |
2178 | bottom->max_qtcb_size, | |
2179 | zfcp_get_busid_by_adapter(adapter), | |
2180 | sizeof(struct fsf_qtcb)); | |
2181 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
2182 | "qtcb-size"); | |
2183 | debug_event(fsf_req->adapter->erp_dbf, 0, | |
2184 | &bottom->max_qtcb_size, sizeof (u32)); | |
2185 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2186 | return -EIO; | |
2187 | } | |
2188 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, | |
2189 | &adapter->status); | |
2190 | break; | |
2191 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: | |
2192 | debug_text_event(adapter->erp_dbf, 0, "xchg-inco"); | |
2193 | ||
2194 | if (zfcp_fsf_exchange_config_evaluate(fsf_req, 0)) | |
2195 | return -EIO; | |
2196 | ||
aef4a983 MS |
2197 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, &adapter->status); |
2198 | ||
2199 | zfcp_fsf_link_down_info_eval(adapter, | |
2200 | &qtcb->header.fsf_status_qual.link_down_info); | |
1da177e4 LT |
2201 | break; |
2202 | default: | |
2203 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf-stat-ng"); | |
2204 | debug_event(fsf_req->adapter->erp_dbf, 0, | |
2205 | &fsf_req->qtcb->header.fsf_status, sizeof (u32)); | |
2206 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2207 | return -EIO; | |
2208 | } | |
2209 | return 0; | |
2210 | } | |
2211 | ||
2212 | /** | |
2213 | * zfcp_fsf_exchange_port_data - request information about local port | |
aef4a983 | 2214 | * @erp_action: ERP action for the adapter for which port data is requested |
1da177e4 LT |
2215 | * @adapter: for which port data is requested |
2216 | * @data: response to exchange port data request | |
2217 | */ | |
2218 | int | |
aef4a983 MS |
2219 | zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action, |
2220 | struct zfcp_adapter *adapter, | |
1da177e4 LT |
2221 | struct fsf_qtcb_bottom_port *data) |
2222 | { | |
2223 | volatile struct qdio_buffer_element *sbale; | |
1da177e4 | 2224 | struct zfcp_fsf_req *fsf_req; |
2abbe866 AH |
2225 | unsigned long lock_flags; |
2226 | int retval = 0; | |
1da177e4 | 2227 | |
aef4a983 | 2228 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) { |
1da177e4 LT |
2229 | ZFCP_LOG_INFO("error: exchange port data " |
2230 | "command not supported by adapter %s\n", | |
2231 | zfcp_get_busid_by_adapter(adapter)); | |
2232 | return -EOPNOTSUPP; | |
2233 | } | |
2234 | ||
1da177e4 LT |
2235 | /* setup new FSF request */ |
2236 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, | |
2448c459 | 2237 | erp_action ? ZFCP_REQ_AUTO_CLEANUP : 0, |
d2c993d8 | 2238 | NULL, &lock_flags, &fsf_req); |
1da177e4 LT |
2239 | if (retval < 0) { |
2240 | ZFCP_LOG_INFO("error: Out of resources. Could not create an " | |
2241 | "exchange port data request for" | |
2242 | "the adapter %s.\n", | |
2243 | zfcp_get_busid_by_adapter(adapter)); | |
2244 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, | |
2245 | lock_flags); | |
2448c459 | 2246 | return retval; |
aef4a983 MS |
2247 | } |
2248 | ||
2249 | if (data) | |
2448c459 | 2250 | fsf_req->data = (unsigned long) data; |
059c97d0 | 2251 | |
1da177e4 LT |
2252 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
2253 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
2254 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2255 | ||
2448c459 AH |
2256 | if (erp_action) { |
2257 | erp_action->fsf_req = fsf_req; | |
2258 | fsf_req->erp_action = erp_action; | |
2abbe866 AH |
2259 | zfcp_erp_start_timer(fsf_req); |
2260 | } else | |
2261 | zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1da177e4 | 2262 | |
2abbe866 | 2263 | retval = zfcp_fsf_req_send(fsf_req); |
1da177e4 LT |
2264 | if (retval) { |
2265 | ZFCP_LOG_INFO("error: Could not send an exchange port data " | |
2266 | "command on the adapter %s\n", | |
2267 | zfcp_get_busid_by_adapter(adapter)); | |
2268 | zfcp_fsf_req_free(fsf_req); | |
aef4a983 MS |
2269 | if (erp_action) |
2270 | erp_action->fsf_req = NULL; | |
1da177e4 LT |
2271 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, |
2272 | lock_flags); | |
2448c459 | 2273 | return retval; |
1da177e4 LT |
2274 | } |
2275 | ||
2448c459 | 2276 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); |
1da177e4 | 2277 | |
2448c459 AH |
2278 | if (!erp_action) { |
2279 | wait_event(fsf_req->completion_wq, | |
2280 | fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
2448c459 | 2281 | zfcp_fsf_req_free(fsf_req); |
2448c459 | 2282 | } |
1da177e4 LT |
2283 | return retval; |
2284 | } | |
2285 | ||
2f8f3ed5 AH |
2286 | /** |
2287 | * zfcp_fsf_exchange_port_evaluate | |
2288 | * @fsf_req: fsf_req which belongs to xchg port data request | |
2289 | * @xchg_ok: specifies if xchg port data was incomplete or complete (0/1) | |
2290 | */ | |
2291 | static void | |
2292 | zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *fsf_req, int xchg_ok) | |
2293 | { | |
2294 | struct zfcp_adapter *adapter; | |
2295 | struct fsf_qtcb *qtcb; | |
2296 | struct fsf_qtcb_bottom_port *bottom, *data; | |
2297 | struct Scsi_Host *shost; | |
2298 | ||
2299 | adapter = fsf_req->adapter; | |
2300 | qtcb = fsf_req->qtcb; | |
2301 | bottom = &qtcb->bottom.port; | |
2302 | shost = adapter->scsi_host; | |
2303 | ||
2304 | data = (struct fsf_qtcb_bottom_port*) fsf_req->data; | |
2305 | if (data) | |
2306 | memcpy(data, bottom, sizeof(struct fsf_qtcb_bottom_port)); | |
2307 | ||
2308 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) | |
2309 | fc_host_permanent_port_name(shost) = bottom->wwpn; | |
2310 | else | |
2311 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
2312 | fc_host_maxframe_size(shost) = bottom->maximum_frame_size; | |
2313 | fc_host_supported_speeds(shost) = bottom->supported_speed; | |
2314 | } | |
1da177e4 LT |
2315 | |
2316 | /** | |
2317 | * zfcp_fsf_exchange_port_data_handler - handler for exchange_port_data request | |
2318 | * @fsf_req: pointer to struct zfcp_fsf_req | |
2319 | */ | |
2320 | static void | |
2321 | zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *fsf_req) | |
2322 | { | |
2f8f3ed5 AH |
2323 | struct zfcp_adapter *adapter; |
2324 | struct fsf_qtcb *qtcb; | |
2325 | ||
2326 | adapter = fsf_req->adapter; | |
2327 | qtcb = fsf_req->qtcb; | |
1da177e4 LT |
2328 | |
2329 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
2330 | return; | |
2331 | ||
aef4a983 | 2332 | switch (qtcb->header.fsf_status) { |
1da177e4 | 2333 | case FSF_GOOD: |
2f8f3ed5 | 2334 | zfcp_fsf_exchange_port_evaluate(fsf_req, 1); |
aef4a983 | 2335 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status); |
aef4a983 | 2336 | break; |
aef4a983 | 2337 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
2f8f3ed5 | 2338 | zfcp_fsf_exchange_port_evaluate(fsf_req, 0); |
aef4a983 | 2339 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status); |
aef4a983 MS |
2340 | zfcp_fsf_link_down_info_eval(adapter, |
2341 | &qtcb->header.fsf_status_qual.link_down_info); | |
1da177e4 | 2342 | break; |
1da177e4 | 2343 | default: |
aef4a983 MS |
2344 | debug_text_event(adapter->erp_dbf, 0, "xchg-port-ng"); |
2345 | debug_event(adapter->erp_dbf, 0, | |
1da177e4 LT |
2346 | &fsf_req->qtcb->header.fsf_status, sizeof(u32)); |
2347 | } | |
2348 | } | |
2349 | ||
2350 | ||
2351 | /* | |
2352 | * function: zfcp_fsf_open_port | |
2353 | * | |
2354 | * purpose: | |
2355 | * | |
2356 | * returns: address of initiated FSF request | |
2357 | * NULL - request could not be initiated | |
2358 | */ | |
2359 | int | |
2360 | zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) | |
2361 | { | |
2362 | volatile struct qdio_buffer_element *sbale; | |
2abbe866 | 2363 | struct zfcp_fsf_req *fsf_req; |
1da177e4 LT |
2364 | unsigned long lock_flags; |
2365 | int retval = 0; | |
2366 | ||
2367 | /* setup new FSF request */ | |
2368 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
2369 | FSF_QTCB_OPEN_PORT_WITH_DID, | |
2370 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
2371 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 2372 | &lock_flags, &fsf_req); |
1da177e4 LT |
2373 | if (retval < 0) { |
2374 | ZFCP_LOG_INFO("error: Could not create open port request " | |
2375 | "for port 0x%016Lx on adapter %s.\n", | |
2376 | erp_action->port->wwpn, | |
2377 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2378 | goto out; | |
2379 | } | |
2380 | ||
2abbe866 | 2381 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
2382 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
2383 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2384 | ||
2abbe866 | 2385 | fsf_req->qtcb->bottom.support.d_id = erp_action->port->d_id; |
1da177e4 | 2386 | atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->port->status); |
2abbe866 AH |
2387 | fsf_req->data = (unsigned long) erp_action->port; |
2388 | fsf_req->erp_action = erp_action; | |
2389 | erp_action->fsf_req = fsf_req; | |
1da177e4 | 2390 | |
2abbe866 AH |
2391 | zfcp_erp_start_timer(fsf_req); |
2392 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
2393 | if (retval) { |
2394 | ZFCP_LOG_INFO("error: Could not send open port request for " | |
2395 | "port 0x%016Lx on adapter %s.\n", | |
2396 | erp_action->port->wwpn, | |
2397 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2abbe866 | 2398 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
2399 | erp_action->fsf_req = NULL; |
2400 | goto out; | |
2401 | } | |
2402 | ||
2403 | ZFCP_LOG_DEBUG("open port request initiated " | |
2404 | "(adapter %s, port 0x%016Lx)\n", | |
2405 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2406 | erp_action->port->wwpn); | |
2407 | out: | |
2408 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
2409 | lock_flags); | |
2410 | return retval; | |
2411 | } | |
2412 | ||
2413 | /* | |
2414 | * function: zfcp_fsf_open_port_handler | |
2415 | * | |
2416 | * purpose: is called for finished Open Port command | |
2417 | * | |
2418 | * returns: | |
2419 | */ | |
2420 | static int | |
2421 | zfcp_fsf_open_port_handler(struct zfcp_fsf_req *fsf_req) | |
2422 | { | |
2423 | int retval = -EINVAL; | |
2424 | struct zfcp_port *port; | |
2425 | struct fsf_plogi *plogi; | |
2426 | struct fsf_qtcb_header *header; | |
2427 | u16 subtable, rule, counter; | |
2428 | ||
059c97d0 | 2429 | port = (struct zfcp_port *) fsf_req->data; |
1da177e4 LT |
2430 | header = &fsf_req->qtcb->header; |
2431 | ||
2432 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
2433 | /* don't change port status in our bookkeeping */ | |
2434 | goto skip_fsfstatus; | |
2435 | } | |
2436 | ||
2437 | /* evaluate FSF status in QTCB */ | |
2438 | switch (header->fsf_status) { | |
2439 | ||
2440 | case FSF_PORT_ALREADY_OPEN: | |
1da177e4 LT |
2441 | ZFCP_LOG_NORMAL("bug: remote port 0x%016Lx on adapter %s " |
2442 | "is already open.\n", | |
2443 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2444 | debug_text_exception(fsf_req->adapter->erp_dbf, 0, | |
2445 | "fsf_s_popen"); | |
2446 | /* | |
2447 | * This is a bug, however operation should continue normally | |
2448 | * if it is simply ignored | |
2449 | */ | |
2450 | break; | |
2451 | ||
2452 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
2453 | ZFCP_LOG_NORMAL("Access denied, cannot open port 0x%016Lx " |
2454 | "on adapter %s\n", | |
2455 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2456 | for (counter = 0; counter < 2; counter++) { | |
2457 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
2458 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
2459 | switch (subtable) { | |
2460 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
2461 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
2462 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
2463 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
2464 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
2465 | zfcp_act_subtable_type[subtable], rule); | |
2466 | break; | |
2467 | } | |
2468 | } | |
2469 | debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_access"); | |
2470 | zfcp_erp_port_access_denied(port); | |
2471 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2472 | break; | |
2473 | ||
2474 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: | |
1da177e4 LT |
2475 | ZFCP_LOG_INFO("error: The FSF adapter is out of resources. " |
2476 | "The remote port 0x%016Lx on adapter %s " | |
2477 | "could not be opened. Disabling it.\n", | |
2478 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2479 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
2480 | "fsf_s_max_ports"); | |
2481 | zfcp_erp_port_failed(port); | |
2482 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2483 | break; | |
2484 | ||
2485 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
2486 | switch (header->fsf_status_qual.word[0]) { |
2487 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
2488 | debug_text_event(fsf_req->adapter->erp_dbf, 1, |
2489 | "fsf_sq_ltest"); | |
2490 | /* ERP strategy will escalate */ | |
2491 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2492 | break; | |
2493 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
2494 | /* ERP strategy will escalate */ | |
2495 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
2496 | "fsf_sq_ulp"); | |
2497 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2498 | break; | |
2499 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
1da177e4 LT |
2500 | ZFCP_LOG_NORMAL("The remote port 0x%016Lx on " |
2501 | "adapter %s could not be opened. " | |
2502 | "Disabling it.\n", | |
2503 | port->wwpn, | |
2504 | zfcp_get_busid_by_port(port)); | |
2505 | debug_text_exception(fsf_req->adapter->erp_dbf, 0, | |
2506 | "fsf_sq_no_retry"); | |
2507 | zfcp_erp_port_failed(port); | |
2508 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2509 | break; | |
2510 | default: | |
2511 | ZFCP_LOG_NORMAL | |
2512 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
2513 | header->fsf_status_qual.word[0]); | |
2514 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
2515 | "fsf_sq_inval:"); | |
2516 | debug_exception( | |
2517 | fsf_req->adapter->erp_dbf, 0, | |
2518 | &header->fsf_status_qual.word[0], | |
2519 | sizeof (u32)); | |
2520 | break; | |
2521 | } | |
2522 | break; | |
2523 | ||
2524 | case FSF_GOOD: | |
1da177e4 LT |
2525 | /* save port handle assigned by FSF */ |
2526 | port->handle = header->port_handle; | |
2527 | ZFCP_LOG_INFO("The remote port 0x%016Lx via adapter %s " | |
2528 | "was opened, it's port handle is 0x%x\n", | |
2529 | port->wwpn, zfcp_get_busid_by_port(port), | |
2530 | port->handle); | |
2531 | /* mark port as open */ | |
2532 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN | | |
2533 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
d736a27b AH |
2534 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
2535 | ZFCP_STATUS_COMMON_ACCESS_BOXED, | |
2536 | &port->status); | |
1da177e4 LT |
2537 | retval = 0; |
2538 | /* check whether D_ID has changed during open */ | |
2539 | /* | |
2540 | * FIXME: This check is not airtight, as the FCP channel does | |
2541 | * not monitor closures of target port connections caused on | |
2542 | * the remote side. Thus, they might miss out on invalidating | |
2543 | * locally cached WWPNs (and other N_Port parameters) of gone | |
2544 | * target ports. So, our heroic attempt to make things safe | |
2545 | * could be undermined by 'open port' response data tagged with | |
2546 | * obsolete WWPNs. Another reason to monitor potential | |
2547 | * connection closures ourself at least (by interpreting | |
2548 | * incoming ELS' and unsolicited status). It just crosses my | |
2549 | * mind that one should be able to cross-check by means of | |
2550 | * another GID_PN straight after a port has been opened. | |
2551 | * Alternately, an ADISC/PDISC ELS should suffice, as well. | |
2552 | */ | |
2553 | plogi = (struct fsf_plogi *) fsf_req->qtcb->bottom.support.els; | |
2554 | if (!atomic_test_mask(ZFCP_STATUS_PORT_NO_WWPN, &port->status)) | |
2555 | { | |
2556 | if (fsf_req->qtcb->bottom.support.els1_length < | |
75bfc283 | 2557 | sizeof (struct fsf_plogi)) { |
1da177e4 LT |
2558 | ZFCP_LOG_INFO( |
2559 | "warning: insufficient length of " | |
2560 | "PLOGI payload (%i)\n", | |
2561 | fsf_req->qtcb->bottom.support.els1_length); | |
2562 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
2563 | "fsf_s_short_plogi:"); | |
2564 | /* skip sanity check and assume wwpn is ok */ | |
2565 | } else { | |
2566 | if (plogi->serv_param.wwpn != port->wwpn) { | |
2567 | ZFCP_LOG_INFO("warning: d_id of port " | |
2568 | "0x%016Lx changed during " | |
2569 | "open\n", port->wwpn); | |
2570 | debug_text_event( | |
2571 | fsf_req->adapter->erp_dbf, 0, | |
2572 | "fsf_s_did_change:"); | |
2573 | atomic_clear_mask( | |
2574 | ZFCP_STATUS_PORT_DID_DID, | |
2575 | &port->status); | |
75bfc283 | 2576 | } else { |
1da177e4 | 2577 | port->wwnn = plogi->serv_param.wwnn; |
75bfc283 RW |
2578 | zfcp_plogi_evaluate(port, plogi); |
2579 | } | |
1da177e4 LT |
2580 | } |
2581 | } | |
2582 | break; | |
2583 | ||
2584 | case FSF_UNKNOWN_OP_SUBTYPE: | |
2585 | /* should never occure, subtype not set in zfcp_fsf_open_port */ | |
1da177e4 LT |
2586 | ZFCP_LOG_INFO("unknown operation subtype (adapter: %s, " |
2587 | "op_subtype=0x%x)\n", | |
2588 | zfcp_get_busid_by_port(port), | |
2589 | fsf_req->qtcb->bottom.support.operation_subtype); | |
2590 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2591 | break; | |
2592 | ||
2593 | default: | |
2594 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
2595 | "(debug info 0x%x)\n", | |
2596 | header->fsf_status); | |
2597 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:"); | |
2598 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
2599 | &header->fsf_status, sizeof (u32)); | |
2600 | break; | |
2601 | } | |
2602 | ||
2603 | skip_fsfstatus: | |
2604 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &port->status); | |
2605 | return retval; | |
2606 | } | |
2607 | ||
2608 | /* | |
2609 | * function: zfcp_fsf_close_port | |
2610 | * | |
2611 | * purpose: submit FSF command "close port" | |
2612 | * | |
2613 | * returns: address of initiated FSF request | |
2614 | * NULL - request could not be initiated | |
2615 | */ | |
2616 | int | |
2617 | zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) | |
2618 | { | |
2619 | volatile struct qdio_buffer_element *sbale; | |
2abbe866 | 2620 | struct zfcp_fsf_req *fsf_req; |
1da177e4 LT |
2621 | unsigned long lock_flags; |
2622 | int retval = 0; | |
2623 | ||
2624 | /* setup new FSF request */ | |
2625 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
2626 | FSF_QTCB_CLOSE_PORT, | |
2627 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
2628 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 2629 | &lock_flags, &fsf_req); |
1da177e4 LT |
2630 | if (retval < 0) { |
2631 | ZFCP_LOG_INFO("error: Could not create a close port request " | |
2632 | "for port 0x%016Lx on adapter %s.\n", | |
2633 | erp_action->port->wwpn, | |
2634 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2635 | goto out; | |
2636 | } | |
2637 | ||
2abbe866 | 2638 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
2639 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
2640 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2641 | ||
2642 | atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->port->status); | |
2abbe866 AH |
2643 | fsf_req->data = (unsigned long) erp_action->port; |
2644 | fsf_req->erp_action = erp_action; | |
2645 | fsf_req->qtcb->header.port_handle = erp_action->port->handle; | |
2646 | fsf_req->erp_action = erp_action; | |
2647 | erp_action->fsf_req = fsf_req; | |
2648 | ||
2649 | zfcp_erp_start_timer(fsf_req); | |
2650 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
2651 | if (retval) { |
2652 | ZFCP_LOG_INFO("error: Could not send a close port request for " | |
2653 | "port 0x%016Lx on adapter %s.\n", | |
2654 | erp_action->port->wwpn, | |
2655 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2abbe866 | 2656 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
2657 | erp_action->fsf_req = NULL; |
2658 | goto out; | |
2659 | } | |
2660 | ||
2661 | ZFCP_LOG_TRACE("close port request initiated " | |
2662 | "(adapter %s, port 0x%016Lx)\n", | |
2663 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2664 | erp_action->port->wwpn); | |
2665 | out: | |
2666 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
2667 | lock_flags); | |
2668 | return retval; | |
2669 | } | |
2670 | ||
2671 | /* | |
2672 | * function: zfcp_fsf_close_port_handler | |
2673 | * | |
2674 | * purpose: is called for finished Close Port FSF command | |
2675 | * | |
2676 | * returns: | |
2677 | */ | |
2678 | static int | |
2679 | zfcp_fsf_close_port_handler(struct zfcp_fsf_req *fsf_req) | |
2680 | { | |
2681 | int retval = -EINVAL; | |
2682 | struct zfcp_port *port; | |
2683 | ||
059c97d0 | 2684 | port = (struct zfcp_port *) fsf_req->data; |
1da177e4 LT |
2685 | |
2686 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
2687 | /* don't change port status in our bookkeeping */ | |
2688 | goto skip_fsfstatus; | |
2689 | } | |
2690 | ||
2691 | /* evaluate FSF status in QTCB */ | |
2692 | switch (fsf_req->qtcb->header.fsf_status) { | |
2693 | ||
2694 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
2695 | ZFCP_LOG_INFO("Temporary port identifier 0x%x for port " |
2696 | "0x%016Lx on adapter %s invalid. This may happen " | |
2697 | "occasionally.\n", port->handle, | |
2698 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2699 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
2700 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
2701 | (char *) &fsf_req->qtcb->header.fsf_status_qual, | |
2702 | sizeof (union fsf_status_qual)); | |
2703 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
2704 | "fsf_s_phand_nv"); | |
2705 | zfcp_erp_adapter_reopen(port->adapter, 0); | |
2706 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2707 | break; | |
2708 | ||
2709 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
2710 | /* Note: FSF has actually closed the port in this case. |
2711 | * The status code is just daft. Fingers crossed for a change | |
2712 | */ | |
2713 | retval = 0; | |
2714 | break; | |
2715 | ||
2716 | case FSF_GOOD: | |
1da177e4 LT |
2717 | ZFCP_LOG_TRACE("remote port 0x016%Lx on adapter %s closed, " |
2718 | "port handle 0x%x\n", port->wwpn, | |
2719 | zfcp_get_busid_by_port(port), port->handle); | |
2720 | zfcp_erp_modify_port_status(port, | |
2721 | ZFCP_STATUS_COMMON_OPEN, | |
2722 | ZFCP_CLEAR); | |
2723 | retval = 0; | |
2724 | break; | |
2725 | ||
2726 | default: | |
2727 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
2728 | "(debug info 0x%x)\n", | |
2729 | fsf_req->qtcb->header.fsf_status); | |
2730 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:"); | |
2731 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
2732 | &fsf_req->qtcb->header.fsf_status, | |
2733 | sizeof (u32)); | |
2734 | break; | |
2735 | } | |
2736 | ||
2737 | skip_fsfstatus: | |
2738 | atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &port->status); | |
2739 | return retval; | |
2740 | } | |
2741 | ||
2742 | /* | |
2743 | * function: zfcp_fsf_close_physical_port | |
2744 | * | |
2745 | * purpose: submit FSF command "close physical port" | |
2746 | * | |
2747 | * returns: address of initiated FSF request | |
2748 | * NULL - request could not be initiated | |
2749 | */ | |
2750 | int | |
2751 | zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) | |
2752 | { | |
1da177e4 | 2753 | volatile struct qdio_buffer_element *sbale; |
2abbe866 AH |
2754 | struct zfcp_fsf_req *fsf_req; |
2755 | unsigned long lock_flags; | |
2756 | int retval = 0; | |
1da177e4 LT |
2757 | |
2758 | /* setup new FSF request */ | |
2759 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
2760 | FSF_QTCB_CLOSE_PHYSICAL_PORT, | |
2761 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
2762 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 2763 | &lock_flags, &fsf_req); |
1da177e4 LT |
2764 | if (retval < 0) { |
2765 | ZFCP_LOG_INFO("error: Could not create close physical port " | |
2766 | "request (adapter %s, port 0x%016Lx)\n", | |
2767 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2768 | erp_action->port->wwpn); | |
2769 | ||
2770 | goto out; | |
2771 | } | |
2772 | ||
2abbe866 | 2773 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
2774 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
2775 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2776 | ||
2777 | /* mark port as being closed */ | |
2778 | atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, | |
2779 | &erp_action->port->status); | |
2780 | /* save a pointer to this port */ | |
2abbe866 AH |
2781 | fsf_req->data = (unsigned long) erp_action->port; |
2782 | fsf_req->qtcb->header.port_handle = erp_action->port->handle; | |
2783 | fsf_req->erp_action = erp_action; | |
2784 | erp_action->fsf_req = fsf_req; | |
2785 | ||
2786 | zfcp_erp_start_timer(fsf_req); | |
2787 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
2788 | if (retval) { |
2789 | ZFCP_LOG_INFO("error: Could not send close physical port " | |
2790 | "request (adapter %s, port 0x%016Lx)\n", | |
2791 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2792 | erp_action->port->wwpn); | |
2abbe866 | 2793 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
2794 | erp_action->fsf_req = NULL; |
2795 | goto out; | |
2796 | } | |
2797 | ||
2798 | ZFCP_LOG_TRACE("close physical port request initiated " | |
2799 | "(adapter %s, port 0x%016Lx)\n", | |
2800 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2801 | erp_action->port->wwpn); | |
2802 | out: | |
2803 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
2804 | lock_flags); | |
2805 | return retval; | |
2806 | } | |
2807 | ||
2808 | /* | |
2809 | * function: zfcp_fsf_close_physical_port_handler | |
2810 | * | |
2811 | * purpose: is called for finished Close Physical Port FSF command | |
2812 | * | |
2813 | * returns: | |
2814 | */ | |
2815 | static int | |
2816 | zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *fsf_req) | |
2817 | { | |
2818 | int retval = -EINVAL; | |
2819 | struct zfcp_port *port; | |
2820 | struct zfcp_unit *unit; | |
2821 | struct fsf_qtcb_header *header; | |
2822 | u16 subtable, rule, counter; | |
2823 | ||
059c97d0 | 2824 | port = (struct zfcp_port *) fsf_req->data; |
1da177e4 LT |
2825 | header = &fsf_req->qtcb->header; |
2826 | ||
2827 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
2828 | /* don't change port status in our bookkeeping */ | |
2829 | goto skip_fsfstatus; | |
2830 | } | |
2831 | ||
2832 | /* evaluate FSF status in QTCB */ | |
2833 | switch (header->fsf_status) { | |
2834 | ||
2835 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
2836 | ZFCP_LOG_INFO("Temporary port identifier 0x%x invalid" |
2837 | "(adapter %s, port 0x%016Lx). " | |
2838 | "This may happen occasionally.\n", | |
2839 | port->handle, | |
2840 | zfcp_get_busid_by_port(port), | |
2841 | port->wwpn); | |
2842 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
2843 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
2844 | (char *) &header->fsf_status_qual, | |
2845 | sizeof (union fsf_status_qual)); | |
2846 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
2847 | "fsf_s_phand_nv"); | |
2848 | zfcp_erp_adapter_reopen(port->adapter, 0); | |
2849 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2850 | break; | |
2851 | ||
2852 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
2853 | ZFCP_LOG_NORMAL("Access denied, cannot close " |
2854 | "physical port 0x%016Lx on adapter %s\n", | |
2855 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2856 | for (counter = 0; counter < 2; counter++) { | |
2857 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
2858 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
2859 | switch (subtable) { | |
2860 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
2861 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
2862 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
2863 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
2864 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
2865 | zfcp_act_subtable_type[subtable], rule); | |
2866 | break; | |
2867 | } | |
2868 | } | |
2869 | debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_access"); | |
2870 | zfcp_erp_port_access_denied(port); | |
2871 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2872 | break; | |
2873 | ||
2874 | case FSF_PORT_BOXED: | |
1da177e4 LT |
2875 | ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter " |
2876 | "%s needs to be reopened but it was attempted " | |
2877 | "to close it physically.\n", | |
2878 | port->wwpn, | |
2879 | zfcp_get_busid_by_port(port)); | |
2880 | debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_pboxed"); | |
d736a27b | 2881 | zfcp_erp_port_boxed(port); |
1da177e4 LT |
2882 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
2883 | ZFCP_STATUS_FSFREQ_RETRY; | |
2884 | break; | |
2885 | ||
2886 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
2887 | switch (header->fsf_status_qual.word[0]) { |
2888 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
2889 | debug_text_event(fsf_req->adapter->erp_dbf, 1, |
2890 | "fsf_sq_ltest"); | |
2891 | /* This will now be escalated by ERP */ | |
2892 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2893 | break; | |
2894 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
2895 | /* ERP strategy will escalate */ |
2896 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
2897 | "fsf_sq_ulp"); | |
2898 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2899 | break; | |
2900 | default: | |
2901 | ZFCP_LOG_NORMAL | |
2902 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
2903 | header->fsf_status_qual.word[0]); | |
2904 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
2905 | "fsf_sq_inval:"); | |
2906 | debug_exception( | |
2907 | fsf_req->adapter->erp_dbf, 0, | |
2908 | &header->fsf_status_qual.word[0], sizeof (u32)); | |
2909 | break; | |
2910 | } | |
2911 | break; | |
2912 | ||
2913 | case FSF_GOOD: | |
1da177e4 LT |
2914 | ZFCP_LOG_DEBUG("Remote port 0x%016Lx via adapter %s " |
2915 | "physically closed, port handle 0x%x\n", | |
2916 | port->wwpn, | |
2917 | zfcp_get_busid_by_port(port), port->handle); | |
2918 | /* can't use generic zfcp_erp_modify_port_status because | |
2919 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port | |
2920 | */ | |
2921 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
2922 | list_for_each_entry(unit, &port->unit_list_head, list) | |
2923 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); | |
2924 | retval = 0; | |
2925 | break; | |
2926 | ||
2927 | default: | |
2928 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
2929 | "(debug info 0x%x)\n", | |
2930 | header->fsf_status); | |
2931 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:"); | |
2932 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
2933 | &header->fsf_status, sizeof (u32)); | |
2934 | break; | |
2935 | } | |
2936 | ||
2937 | skip_fsfstatus: | |
2938 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, &port->status); | |
2939 | return retval; | |
2940 | } | |
2941 | ||
2942 | /* | |
2943 | * function: zfcp_fsf_open_unit | |
2944 | * | |
2945 | * purpose: | |
2946 | * | |
2947 | * returns: | |
2948 | * | |
2949 | * assumptions: This routine does not check whether the associated | |
2950 | * remote port has already been opened. This should be | |
2951 | * done by calling routines. Otherwise some status | |
2952 | * may be presented by FSF | |
2953 | */ | |
2954 | int | |
2955 | zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) | |
2956 | { | |
2957 | volatile struct qdio_buffer_element *sbale; | |
2abbe866 | 2958 | struct zfcp_fsf_req *fsf_req; |
1da177e4 LT |
2959 | unsigned long lock_flags; |
2960 | int retval = 0; | |
2961 | ||
2962 | /* setup new FSF request */ | |
2963 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
2964 | FSF_QTCB_OPEN_LUN, | |
2965 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
2966 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 2967 | &lock_flags, &fsf_req); |
1da177e4 LT |
2968 | if (retval < 0) { |
2969 | ZFCP_LOG_INFO("error: Could not create open unit request for " | |
2970 | "unit 0x%016Lx on port 0x%016Lx on adapter %s.\n", | |
2971 | erp_action->unit->fcp_lun, | |
2972 | erp_action->unit->port->wwpn, | |
2973 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2974 | goto out; | |
2975 | } | |
2976 | ||
2abbe866 | 2977 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
2978 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
2979 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2980 | ||
2abbe866 AH |
2981 | fsf_req->qtcb->header.port_handle = erp_action->port->handle; |
2982 | fsf_req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun; | |
aef4a983 | 2983 | if (!(erp_action->adapter->connection_features & FSF_FEATURE_NPIV_MODE)) |
2abbe866 | 2984 | fsf_req->qtcb->bottom.support.option = |
06506d00 | 2985 | FSF_OPEN_LUN_SUPPRESS_BOXING; |
1da177e4 | 2986 | atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->unit->status); |
2abbe866 AH |
2987 | fsf_req->data = (unsigned long) erp_action->unit; |
2988 | fsf_req->erp_action = erp_action; | |
2989 | erp_action->fsf_req = fsf_req; | |
1da177e4 | 2990 | |
2abbe866 AH |
2991 | zfcp_erp_start_timer(fsf_req); |
2992 | retval = zfcp_fsf_req_send(erp_action->fsf_req); | |
1da177e4 LT |
2993 | if (retval) { |
2994 | ZFCP_LOG_INFO("error: Could not send an open unit request " | |
2995 | "on the adapter %s, port 0x%016Lx for " | |
2996 | "unit 0x%016Lx\n", | |
2997 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2998 | erp_action->port->wwpn, | |
2999 | erp_action->unit->fcp_lun); | |
2abbe866 | 3000 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
3001 | erp_action->fsf_req = NULL; |
3002 | goto out; | |
3003 | } | |
3004 | ||
3005 | ZFCP_LOG_TRACE("Open LUN request initiated (adapter %s, " | |
3006 | "port 0x%016Lx, unit 0x%016Lx)\n", | |
3007 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
3008 | erp_action->port->wwpn, erp_action->unit->fcp_lun); | |
3009 | out: | |
3010 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
3011 | lock_flags); | |
3012 | return retval; | |
3013 | } | |
3014 | ||
3015 | /* | |
3016 | * function: zfcp_fsf_open_unit_handler | |
3017 | * | |
3018 | * purpose: is called for finished Open LUN command | |
3019 | * | |
3020 | * returns: | |
3021 | */ | |
3022 | static int | |
3023 | zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *fsf_req) | |
3024 | { | |
3025 | int retval = -EINVAL; | |
3026 | struct zfcp_adapter *adapter; | |
3027 | struct zfcp_unit *unit; | |
3028 | struct fsf_qtcb_header *header; | |
3029 | struct fsf_qtcb_bottom_support *bottom; | |
3030 | struct fsf_queue_designator *queue_designator; | |
3031 | u16 subtable, rule, counter; | |
aef4a983 | 3032 | int exclusive, readwrite; |
1da177e4 | 3033 | |
059c97d0 | 3034 | unit = (struct zfcp_unit *) fsf_req->data; |
1da177e4 LT |
3035 | |
3036 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
3037 | /* don't change unit status in our bookkeeping */ | |
3038 | goto skip_fsfstatus; | |
3039 | } | |
3040 | ||
3041 | adapter = fsf_req->adapter; | |
3042 | header = &fsf_req->qtcb->header; | |
3043 | bottom = &fsf_req->qtcb->bottom.support; | |
3044 | queue_designator = &header->fsf_status_qual.fsf_queue_designator; | |
3045 | ||
1da177e4 LT |
3046 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
3047 | ZFCP_STATUS_UNIT_SHARED | | |
3048 | ZFCP_STATUS_UNIT_READONLY, | |
3049 | &unit->status); | |
3050 | ||
3051 | /* evaluate FSF status in QTCB */ | |
3052 | switch (header->fsf_status) { | |
3053 | ||
3054 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
3055 | ZFCP_LOG_INFO("Temporary port identifier 0x%x " |
3056 | "for port 0x%016Lx on adapter %s invalid " | |
3057 | "This may happen occasionally\n", | |
3058 | unit->port->handle, | |
3059 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3060 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
3061 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3062 | (char *) &header->fsf_status_qual, | |
3063 | sizeof (union fsf_status_qual)); | |
3064 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_ph_nv"); | |
3065 | zfcp_erp_adapter_reopen(unit->port->adapter, 0); | |
3066 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3067 | break; | |
3068 | ||
3069 | case FSF_LUN_ALREADY_OPEN: | |
1da177e4 LT |
3070 | ZFCP_LOG_NORMAL("bug: Attempted to open unit 0x%016Lx on " |
3071 | "remote port 0x%016Lx on adapter %s twice.\n", | |
3072 | unit->fcp_lun, | |
3073 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3074 | debug_text_exception(adapter->erp_dbf, 0, | |
3075 | "fsf_s_uopen"); | |
3076 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3077 | break; | |
3078 | ||
3079 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
3080 | ZFCP_LOG_NORMAL("Access denied, cannot open unit 0x%016Lx on " |
3081 | "remote port 0x%016Lx on adapter %s\n", | |
3082 | unit->fcp_lun, unit->port->wwpn, | |
3083 | zfcp_get_busid_by_unit(unit)); | |
3084 | for (counter = 0; counter < 2; counter++) { | |
3085 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
3086 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
3087 | switch (subtable) { | |
3088 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
3089 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
3090 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
3091 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
3092 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
3093 | zfcp_act_subtable_type[subtable], rule); | |
3094 | break; | |
3095 | } | |
3096 | } | |
3097 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_access"); | |
3098 | zfcp_erp_unit_access_denied(unit); | |
3099 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); | |
3100 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); | |
3101 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3102 | break; | |
3103 | ||
3104 | case FSF_PORT_BOXED: | |
1da177e4 LT |
3105 | ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s " |
3106 | "needs to be reopened\n", | |
3107 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3108 | debug_text_event(adapter->erp_dbf, 2, "fsf_s_pboxed"); | |
d736a27b | 3109 | zfcp_erp_port_boxed(unit->port); |
1da177e4 LT |
3110 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
3111 | ZFCP_STATUS_FSFREQ_RETRY; | |
3112 | break; | |
3113 | ||
3114 | case FSF_LUN_SHARING_VIOLATION: | |
1da177e4 LT |
3115 | if (header->fsf_status_qual.word[0] != 0) { |
3116 | ZFCP_LOG_NORMAL("FCP-LUN 0x%Lx at the remote port " | |
3117 | "with WWPN 0x%Lx " | |
3118 | "connected to the adapter %s " | |
3119 | "is already in use in LPAR%d, CSS%d\n", | |
3120 | unit->fcp_lun, | |
3121 | unit->port->wwpn, | |
3122 | zfcp_get_busid_by_unit(unit), | |
3123 | queue_designator->hla, | |
3124 | queue_designator->cssid); | |
3125 | } else { | |
3126 | subtable = header->fsf_status_qual.halfword[4]; | |
3127 | rule = header->fsf_status_qual.halfword[5]; | |
3128 | switch (subtable) { | |
3129 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
3130 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
3131 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
3132 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
3133 | ZFCP_LOG_NORMAL("Access to FCP-LUN 0x%Lx at the " | |
3134 | "remote port with WWPN 0x%Lx " | |
3135 | "connected to the adapter %s " | |
3136 | "is denied (%s rule %d)\n", | |
3137 | unit->fcp_lun, | |
3138 | unit->port->wwpn, | |
3139 | zfcp_get_busid_by_unit(unit), | |
3140 | zfcp_act_subtable_type[subtable], | |
3141 | rule); | |
3142 | break; | |
3143 | } | |
3144 | } | |
3145 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
3146 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3147 | (char *) &header->fsf_status_qual, | |
3148 | sizeof (union fsf_status_qual)); | |
3149 | debug_text_event(adapter->erp_dbf, 2, | |
3150 | "fsf_s_l_sh_vio"); | |
3151 | zfcp_erp_unit_access_denied(unit); | |
3152 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); | |
3153 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); | |
3154 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3155 | break; | |
3156 | ||
3157 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: | |
1da177e4 LT |
3158 | ZFCP_LOG_INFO("error: The adapter ran out of resources. " |
3159 | "There is no handle (temporary port identifier) " | |
3160 | "available for unit 0x%016Lx on port 0x%016Lx " | |
3161 | "on adapter %s\n", | |
3162 | unit->fcp_lun, | |
3163 | unit->port->wwpn, | |
3164 | zfcp_get_busid_by_unit(unit)); | |
3165 | debug_text_event(adapter->erp_dbf, 1, | |
3166 | "fsf_s_max_units"); | |
3167 | zfcp_erp_unit_failed(unit); | |
3168 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3169 | break; | |
3170 | ||
3171 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
3172 | switch (header->fsf_status_qual.word[0]) { |
3173 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
3174 | /* Re-establish link to port */ |
3175 | debug_text_event(adapter->erp_dbf, 1, | |
3176 | "fsf_sq_ltest"); | |
65a8d4e1 | 3177 | zfcp_test_link(unit->port); |
1da177e4 LT |
3178 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3179 | break; | |
3180 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
3181 | /* ERP strategy will escalate */ |
3182 | debug_text_event(adapter->erp_dbf, 1, | |
3183 | "fsf_sq_ulp"); | |
3184 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3185 | break; | |
3186 | default: | |
3187 | ZFCP_LOG_NORMAL | |
3188 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
3189 | header->fsf_status_qual.word[0]); | |
3190 | debug_text_event(adapter->erp_dbf, 0, | |
3191 | "fsf_sq_inval:"); | |
3192 | debug_exception(adapter->erp_dbf, 0, | |
3193 | &header->fsf_status_qual.word[0], | |
3194 | sizeof (u32)); | |
3195 | } | |
3196 | break; | |
3197 | ||
3198 | case FSF_INVALID_COMMAND_OPTION: | |
1da177e4 LT |
3199 | ZFCP_LOG_NORMAL( |
3200 | "Invalid option 0x%x has been specified " | |
3201 | "in QTCB bottom sent to the adapter %s\n", | |
3202 | bottom->option, | |
3203 | zfcp_get_busid_by_adapter(adapter)); | |
3204 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3205 | retval = -EINVAL; | |
3206 | break; | |
3207 | ||
3208 | case FSF_GOOD: | |
1da177e4 LT |
3209 | /* save LUN handle assigned by FSF */ |
3210 | unit->handle = header->lun_handle; | |
3211 | ZFCP_LOG_TRACE("unit 0x%016Lx on remote port 0x%016Lx on " | |
3212 | "adapter %s opened, port handle 0x%x\n", | |
3213 | unit->fcp_lun, | |
3214 | unit->port->wwpn, | |
3215 | zfcp_get_busid_by_unit(unit), | |
3216 | unit->handle); | |
3217 | /* mark unit as open */ | |
3218 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); | |
aef4a983 MS |
3219 | |
3220 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) && | |
3221 | (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) && | |
3222 | (adapter->ccw_device->id.dev_model != ZFCP_DEVICE_MODEL_PRIV)) { | |
3223 | exclusive = (bottom->lun_access_info & | |
3224 | FSF_UNIT_ACCESS_EXCLUSIVE); | |
3225 | readwrite = (bottom->lun_access_info & | |
3226 | FSF_UNIT_ACCESS_OUTBOUND_TRANSFER); | |
3227 | ||
1da177e4 LT |
3228 | if (!exclusive) |
3229 | atomic_set_mask(ZFCP_STATUS_UNIT_SHARED, | |
3230 | &unit->status); | |
3231 | ||
3232 | if (!readwrite) { | |
3233 | atomic_set_mask(ZFCP_STATUS_UNIT_READONLY, | |
3234 | &unit->status); | |
3235 | ZFCP_LOG_NORMAL("read-only access for unit " | |
3236 | "(adapter %s, wwpn=0x%016Lx, " | |
3237 | "fcp_lun=0x%016Lx)\n", | |
3238 | zfcp_get_busid_by_unit(unit), | |
3239 | unit->port->wwpn, | |
3240 | unit->fcp_lun); | |
3241 | } | |
3242 | ||
3243 | if (exclusive && !readwrite) { | |
3244 | ZFCP_LOG_NORMAL("exclusive access of read-only " | |
3245 | "unit not supported\n"); | |
3246 | zfcp_erp_unit_failed(unit); | |
3247 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3248 | zfcp_erp_unit_shutdown(unit, 0); | |
3249 | } else if (!exclusive && readwrite) { | |
3250 | ZFCP_LOG_NORMAL("shared access of read-write " | |
3251 | "unit not supported\n"); | |
3252 | zfcp_erp_unit_failed(unit); | |
3253 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3254 | zfcp_erp_unit_shutdown(unit, 0); | |
3255 | } | |
3256 | } | |
3257 | ||
3258 | retval = 0; | |
3259 | break; | |
3260 | ||
3261 | default: | |
3262 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
3263 | "(debug info 0x%x)\n", | |
3264 | header->fsf_status); | |
3265 | debug_text_event(adapter->erp_dbf, 0, "fsf_s_inval:"); | |
3266 | debug_exception(adapter->erp_dbf, 0, | |
3267 | &header->fsf_status, sizeof (u32)); | |
3268 | break; | |
3269 | } | |
3270 | ||
3271 | skip_fsfstatus: | |
3272 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &unit->status); | |
3273 | return retval; | |
3274 | } | |
3275 | ||
3276 | /* | |
3277 | * function: zfcp_fsf_close_unit | |
3278 | * | |
3279 | * purpose: | |
3280 | * | |
3281 | * returns: address of fsf_req - request successfully initiated | |
3282 | * NULL - | |
3283 | * | |
3284 | * assumptions: This routine does not check whether the associated | |
3285 | * remote port/lun has already been opened. This should be | |
3286 | * done by calling routines. Otherwise some status | |
3287 | * may be presented by FSF | |
3288 | */ | |
3289 | int | |
3290 | zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) | |
3291 | { | |
3292 | volatile struct qdio_buffer_element *sbale; | |
2abbe866 | 3293 | struct zfcp_fsf_req *fsf_req; |
1da177e4 LT |
3294 | unsigned long lock_flags; |
3295 | int retval = 0; | |
3296 | ||
3297 | /* setup new FSF request */ | |
3298 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
3299 | FSF_QTCB_CLOSE_LUN, | |
3300 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
3301 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 3302 | &lock_flags, &fsf_req); |
1da177e4 LT |
3303 | if (retval < 0) { |
3304 | ZFCP_LOG_INFO("error: Could not create close unit request for " | |
3305 | "unit 0x%016Lx on port 0x%016Lx on adapter %s.\n", | |
3306 | erp_action->unit->fcp_lun, | |
3307 | erp_action->port->wwpn, | |
3308 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
3309 | goto out; | |
3310 | } | |
3311 | ||
2abbe866 | 3312 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
3313 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
3314 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
3315 | ||
2abbe866 AH |
3316 | fsf_req->qtcb->header.port_handle = erp_action->port->handle; |
3317 | fsf_req->qtcb->header.lun_handle = erp_action->unit->handle; | |
1da177e4 | 3318 | atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->unit->status); |
2abbe866 AH |
3319 | fsf_req->data = (unsigned long) erp_action->unit; |
3320 | fsf_req->erp_action = erp_action; | |
3321 | erp_action->fsf_req = fsf_req; | |
1da177e4 | 3322 | |
2abbe866 AH |
3323 | zfcp_erp_start_timer(fsf_req); |
3324 | retval = zfcp_fsf_req_send(erp_action->fsf_req); | |
1da177e4 LT |
3325 | if (retval) { |
3326 | ZFCP_LOG_INFO("error: Could not send a close unit request for " | |
3327 | "unit 0x%016Lx on port 0x%016Lx onadapter %s.\n", | |
3328 | erp_action->unit->fcp_lun, | |
3329 | erp_action->port->wwpn, | |
3330 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2abbe866 | 3331 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
3332 | erp_action->fsf_req = NULL; |
3333 | goto out; | |
3334 | } | |
3335 | ||
3336 | ZFCP_LOG_TRACE("Close LUN request initiated (adapter %s, " | |
3337 | "port 0x%016Lx, unit 0x%016Lx)\n", | |
3338 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
3339 | erp_action->port->wwpn, erp_action->unit->fcp_lun); | |
3340 | out: | |
3341 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
3342 | lock_flags); | |
3343 | return retval; | |
3344 | } | |
3345 | ||
3346 | /* | |
3347 | * function: zfcp_fsf_close_unit_handler | |
3348 | * | |
3349 | * purpose: is called for finished Close LUN FSF command | |
3350 | * | |
3351 | * returns: | |
3352 | */ | |
3353 | static int | |
3354 | zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *fsf_req) | |
3355 | { | |
3356 | int retval = -EINVAL; | |
3357 | struct zfcp_unit *unit; | |
3358 | ||
059c97d0 | 3359 | unit = (struct zfcp_unit *) fsf_req->data; |
1da177e4 LT |
3360 | |
3361 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
3362 | /* don't change unit status in our bookkeeping */ | |
3363 | goto skip_fsfstatus; | |
3364 | } | |
3365 | ||
3366 | /* evaluate FSF status in QTCB */ | |
3367 | switch (fsf_req->qtcb->header.fsf_status) { | |
3368 | ||
3369 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
3370 | ZFCP_LOG_INFO("Temporary port identifier 0x%x for port " |
3371 | "0x%016Lx on adapter %s invalid. This may " | |
3372 | "happen in rare circumstances\n", | |
3373 | unit->port->handle, | |
3374 | unit->port->wwpn, | |
3375 | zfcp_get_busid_by_unit(unit)); | |
3376 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
3377 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3378 | (char *) &fsf_req->qtcb->header.fsf_status_qual, | |
3379 | sizeof (union fsf_status_qual)); | |
3380 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3381 | "fsf_s_phand_nv"); | |
3382 | zfcp_erp_adapter_reopen(unit->port->adapter, 0); | |
1da177e4 LT |
3383 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3384 | break; | |
3385 | ||
3386 | case FSF_LUN_HANDLE_NOT_VALID: | |
1da177e4 LT |
3387 | ZFCP_LOG_INFO("Temporary LUN identifier 0x%x of unit " |
3388 | "0x%016Lx on port 0x%016Lx on adapter %s is " | |
3389 | "invalid. This may happen occasionally.\n", | |
3390 | unit->handle, | |
3391 | unit->fcp_lun, | |
3392 | unit->port->wwpn, | |
3393 | zfcp_get_busid_by_unit(unit)); | |
3394 | ZFCP_LOG_DEBUG("Status qualifier data:\n"); | |
3395 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3396 | (char *) &fsf_req->qtcb->header.fsf_status_qual, | |
3397 | sizeof (union fsf_status_qual)); | |
3398 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3399 | "fsf_s_lhand_nv"); | |
3400 | zfcp_erp_port_reopen(unit->port, 0); | |
1da177e4 LT |
3401 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3402 | break; | |
3403 | ||
3404 | case FSF_PORT_BOXED: | |
1da177e4 LT |
3405 | ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s " |
3406 | "needs to be reopened\n", | |
3407 | unit->port->wwpn, | |
3408 | zfcp_get_busid_by_unit(unit)); | |
3409 | debug_text_event(fsf_req->adapter->erp_dbf, 2, "fsf_s_pboxed"); | |
d736a27b | 3410 | zfcp_erp_port_boxed(unit->port); |
1da177e4 LT |
3411 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
3412 | ZFCP_STATUS_FSFREQ_RETRY; | |
3413 | break; | |
3414 | ||
3415 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
3416 | switch (fsf_req->qtcb->header.fsf_status_qual.word[0]) { |
3417 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
3418 | /* re-establish link to port */ |
3419 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3420 | "fsf_sq_ltest"); | |
65a8d4e1 | 3421 | zfcp_test_link(unit->port); |
1da177e4 LT |
3422 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3423 | break; | |
3424 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
3425 | /* ERP strategy will escalate */ |
3426 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3427 | "fsf_sq_ulp"); | |
3428 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3429 | break; | |
3430 | default: | |
3431 | ZFCP_LOG_NORMAL | |
3432 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
3433 | fsf_req->qtcb->header.fsf_status_qual.word[0]); | |
3434 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
3435 | "fsf_sq_inval:"); | |
3436 | debug_exception( | |
3437 | fsf_req->adapter->erp_dbf, 0, | |
3438 | &fsf_req->qtcb->header.fsf_status_qual.word[0], | |
3439 | sizeof (u32)); | |
3440 | break; | |
3441 | } | |
3442 | break; | |
3443 | ||
3444 | case FSF_GOOD: | |
1da177e4 LT |
3445 | ZFCP_LOG_TRACE("unit 0x%016Lx on port 0x%016Lx on adapter %s " |
3446 | "closed, port handle 0x%x\n", | |
3447 | unit->fcp_lun, | |
3448 | unit->port->wwpn, | |
3449 | zfcp_get_busid_by_unit(unit), | |
3450 | unit->handle); | |
3451 | /* mark unit as closed */ | |
3452 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); | |
3453 | retval = 0; | |
3454 | break; | |
3455 | ||
3456 | default: | |
3457 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
3458 | "(debug info 0x%x)\n", | |
3459 | fsf_req->qtcb->header.fsf_status); | |
3460 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:"); | |
3461 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
3462 | &fsf_req->qtcb->header.fsf_status, | |
3463 | sizeof (u32)); | |
3464 | break; | |
3465 | } | |
3466 | ||
3467 | skip_fsfstatus: | |
3468 | atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &unit->status); | |
3469 | return retval; | |
3470 | } | |
3471 | ||
3472 | /** | |
3473 | * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command) | |
3474 | * @adapter: adapter where scsi command is issued | |
3475 | * @unit: unit where command is sent to | |
3476 | * @scsi_cmnd: scsi command to be sent | |
3477 | * @timer: timer to be started when request is initiated | |
3478 | * @req_flags: flags for fsf_request | |
3479 | */ | |
3480 | int | |
3481 | zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter, | |
3482 | struct zfcp_unit *unit, | |
3483 | struct scsi_cmnd * scsi_cmnd, | |
2abbe866 | 3484 | int use_timer, int req_flags) |
1da177e4 LT |
3485 | { |
3486 | struct zfcp_fsf_req *fsf_req = NULL; | |
3487 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
3488 | unsigned int sbtype; | |
3489 | unsigned long lock_flags; | |
3490 | int real_bytes = 0; | |
3491 | int retval = 0; | |
3492 | int mask; | |
3493 | ||
3494 | /* setup new FSF request */ | |
3495 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, | |
3496 | adapter->pool.fsf_req_scsi, | |
3497 | &lock_flags, &fsf_req); | |
3498 | if (unlikely(retval < 0)) { | |
3499 | ZFCP_LOG_DEBUG("error: Could not create FCP command request " | |
3500 | "for unit 0x%016Lx on port 0x%016Lx on " | |
3501 | "adapter %s\n", | |
3502 | unit->fcp_lun, | |
3503 | unit->port->wwpn, | |
3504 | zfcp_get_busid_by_adapter(adapter)); | |
3505 | goto failed_req_create; | |
3506 | } | |
3507 | ||
059c97d0 AH |
3508 | zfcp_unit_get(unit); |
3509 | fsf_req->unit = unit; | |
1da177e4 | 3510 | |
059c97d0 | 3511 | /* associate FSF request with SCSI request (for look up on abort) */ |
4eff4a36 | 3512 | scsi_cmnd->host_scribble = (unsigned char *) fsf_req->req_id; |
059c97d0 AH |
3513 | |
3514 | /* associate SCSI command with FSF request */ | |
3515 | fsf_req->data = (unsigned long) scsi_cmnd; | |
1da177e4 LT |
3516 | |
3517 | /* set handles of unit and its parent port in QTCB */ | |
3518 | fsf_req->qtcb->header.lun_handle = unit->handle; | |
3519 | fsf_req->qtcb->header.port_handle = unit->port->handle; | |
3520 | ||
3521 | /* FSF does not define the structure of the FCP_CMND IU */ | |
3522 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) | |
3523 | &(fsf_req->qtcb->bottom.io.fcp_cmnd); | |
3524 | ||
3525 | /* | |
3526 | * set depending on data direction: | |
3527 | * data direction bits in SBALE (SB Type) | |
3528 | * data direction bits in QTCB | |
3529 | * data direction bits in FCP_CMND IU | |
3530 | */ | |
3531 | switch (scsi_cmnd->sc_data_direction) { | |
3532 | case DMA_NONE: | |
1da177e4 LT |
3533 | fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; |
3534 | /* | |
3535 | * FIXME(qdio): | |
3536 | * what is the correct type for commands | |
3537 | * without 'real' data buffers? | |
3538 | */ | |
3539 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
3540 | break; | |
3541 | case DMA_FROM_DEVICE: | |
1da177e4 LT |
3542 | fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ; |
3543 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
3544 | fcp_cmnd_iu->rddata = 1; | |
3545 | break; | |
3546 | case DMA_TO_DEVICE: | |
1da177e4 LT |
3547 | fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE; |
3548 | sbtype = SBAL_FLAGS0_TYPE_WRITE; | |
3549 | fcp_cmnd_iu->wddata = 1; | |
3550 | break; | |
3551 | case DMA_BIDIRECTIONAL: | |
1da177e4 LT |
3552 | default: |
3553 | /* | |
3554 | * dummy, catch this condition earlier | |
3555 | * in zfcp_scsi_queuecommand | |
3556 | */ | |
3557 | goto failed_scsi_cmnd; | |
3558 | } | |
3559 | ||
3560 | /* set FC service class in QTCB (3 per default) */ | |
06506d00 | 3561 | fsf_req->qtcb->bottom.io.service_class = ZFCP_FC_SERVICE_CLASS_DEFAULT; |
1da177e4 LT |
3562 | |
3563 | /* set FCP_LUN in FCP_CMND IU in QTCB */ | |
3564 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
3565 | ||
3566 | mask = ZFCP_STATUS_UNIT_READONLY | ZFCP_STATUS_UNIT_SHARED; | |
3567 | ||
3568 | /* set task attributes in FCP_CMND IU in QTCB */ | |
3569 | if (likely((scsi_cmnd->device->simple_tags) || | |
3570 | (atomic_test_mask(mask, &unit->status)))) | |
3571 | fcp_cmnd_iu->task_attribute = SIMPLE_Q; | |
3572 | else | |
3573 | fcp_cmnd_iu->task_attribute = UNTAGGED; | |
3574 | ||
3575 | /* set additional length of FCP_CDB in FCP_CMND IU in QTCB, if needed */ | |
3576 | if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH)) { | |
3577 | fcp_cmnd_iu->add_fcp_cdb_length | |
3578 | = (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2; | |
3579 | ZFCP_LOG_TRACE("SCSI CDB length is 0x%x, " | |
3580 | "additional FCP_CDB length is 0x%x " | |
3581 | "(shifted right 2 bits)\n", | |
3582 | scsi_cmnd->cmd_len, | |
3583 | fcp_cmnd_iu->add_fcp_cdb_length); | |
3584 | } | |
3585 | /* | |
3586 | * copy SCSI CDB (including additional length, if any) to | |
3587 | * FCP_CDB in FCP_CMND IU in QTCB | |
3588 | */ | |
3589 | memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); | |
3590 | ||
3591 | /* FCP CMND IU length in QTCB */ | |
3592 | fsf_req->qtcb->bottom.io.fcp_cmnd_length = | |
3593 | sizeof (struct fcp_cmnd_iu) + | |
3594 | fcp_cmnd_iu->add_fcp_cdb_length + sizeof (fcp_dl_t); | |
3595 | ||
3596 | /* generate SBALEs from data buffer */ | |
3597 | real_bytes = zfcp_qdio_sbals_from_scsicmnd(fsf_req, sbtype, scsi_cmnd); | |
3598 | if (unlikely(real_bytes < 0)) { | |
3599 | if (fsf_req->sbal_number < ZFCP_MAX_SBALS_PER_REQ) { | |
3600 | ZFCP_LOG_DEBUG( | |
3601 | "Data did not fit into available buffer(s), " | |
3602 | "waiting for more...\n"); | |
3603 | retval = -EIO; | |
3604 | } else { | |
3605 | ZFCP_LOG_NORMAL("error: No truncation implemented but " | |
3606 | "required. Shutting down unit " | |
3607 | "(adapter %s, port 0x%016Lx, " | |
3608 | "unit 0x%016Lx)\n", | |
3609 | zfcp_get_busid_by_unit(unit), | |
3610 | unit->port->wwpn, | |
3611 | unit->fcp_lun); | |
3612 | zfcp_erp_unit_shutdown(unit, 0); | |
3613 | retval = -EINVAL; | |
3614 | } | |
3615 | goto no_fit; | |
3616 | } | |
3617 | ||
3618 | /* set length of FCP data length in FCP_CMND IU in QTCB */ | |
3619 | zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes); | |
3620 | ||
3621 | ZFCP_LOG_DEBUG("Sending SCSI command:\n"); | |
3622 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3623 | (char *) scsi_cmnd->cmnd, scsi_cmnd->cmd_len); | |
3624 | ||
2abbe866 AH |
3625 | if (use_timer) |
3626 | zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); | |
3627 | ||
3628 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
3629 | if (unlikely(retval < 0)) { |
3630 | ZFCP_LOG_INFO("error: Could not send FCP command request " | |
3631 | "on adapter %s, port 0x%016Lx, unit 0x%016Lx\n", | |
3632 | zfcp_get_busid_by_adapter(adapter), | |
3633 | unit->port->wwpn, | |
3634 | unit->fcp_lun); | |
3635 | goto send_failed; | |
3636 | } | |
3637 | ||
3638 | ZFCP_LOG_TRACE("Send FCP Command initiated (adapter %s, " | |
3639 | "port 0x%016Lx, unit 0x%016Lx)\n", | |
3640 | zfcp_get_busid_by_adapter(adapter), | |
3641 | unit->port->wwpn, | |
3642 | unit->fcp_lun); | |
3643 | goto success; | |
3644 | ||
3645 | send_failed: | |
3646 | no_fit: | |
3647 | failed_scsi_cmnd: | |
059c97d0 | 3648 | zfcp_unit_put(unit); |
1da177e4 LT |
3649 | zfcp_fsf_req_free(fsf_req); |
3650 | fsf_req = NULL; | |
3651 | scsi_cmnd->host_scribble = NULL; | |
3652 | success: | |
3653 | failed_req_create: | |
3654 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
3655 | return retval; | |
3656 | } | |
3657 | ||
1da177e4 LT |
3658 | struct zfcp_fsf_req * |
3659 | zfcp_fsf_send_fcp_command_task_management(struct zfcp_adapter *adapter, | |
3660 | struct zfcp_unit *unit, | |
3661 | u8 tm_flags, int req_flags) | |
3662 | { | |
3663 | struct zfcp_fsf_req *fsf_req = NULL; | |
3664 | int retval = 0; | |
3665 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
3666 | unsigned long lock_flags; | |
3667 | volatile struct qdio_buffer_element *sbale; | |
3668 | ||
3669 | /* setup new FSF request */ | |
3670 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, | |
3671 | adapter->pool.fsf_req_scsi, | |
3672 | &lock_flags, &fsf_req); | |
3673 | if (retval < 0) { | |
3674 | ZFCP_LOG_INFO("error: Could not create FCP command (task " | |
3675 | "management) request for adapter %s, port " | |
3676 | " 0x%016Lx, unit 0x%016Lx.\n", | |
3677 | zfcp_get_busid_by_adapter(adapter), | |
3678 | unit->port->wwpn, unit->fcp_lun); | |
3679 | goto out; | |
3680 | } | |
3681 | ||
3682 | /* | |
3683 | * Used to decide on proper handler in the return path, | |
3684 | * could be either zfcp_fsf_send_fcp_command_task_handler or | |
3685 | * zfcp_fsf_send_fcp_command_task_management_handler */ | |
3686 | ||
3687 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT; | |
3688 | ||
3689 | /* | |
3690 | * hold a pointer to the unit being target of this | |
3691 | * task management request | |
3692 | */ | |
059c97d0 | 3693 | fsf_req->data = (unsigned long) unit; |
1da177e4 LT |
3694 | |
3695 | /* set FSF related fields in QTCB */ | |
3696 | fsf_req->qtcb->header.lun_handle = unit->handle; | |
3697 | fsf_req->qtcb->header.port_handle = unit->port->handle; | |
3698 | fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
06506d00 | 3699 | fsf_req->qtcb->bottom.io.service_class = ZFCP_FC_SERVICE_CLASS_DEFAULT; |
1da177e4 LT |
3700 | fsf_req->qtcb->bottom.io.fcp_cmnd_length = |
3701 | sizeof (struct fcp_cmnd_iu) + sizeof (fcp_dl_t); | |
3702 | ||
3703 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
3704 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE; | |
3705 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
3706 | ||
3707 | /* set FCP related fields in FCP_CMND IU in QTCB */ | |
3708 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) | |
3709 | &(fsf_req->qtcb->bottom.io.fcp_cmnd); | |
3710 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
3711 | fcp_cmnd_iu->task_management_flags = tm_flags; | |
3712 | ||
2abbe866 AH |
3713 | zfcp_fsf_start_timer(fsf_req, ZFCP_SCSI_ER_TIMEOUT); |
3714 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 | 3715 | if (retval) { |
1da177e4 LT |
3716 | ZFCP_LOG_INFO("error: Could not send an FCP-command (task " |
3717 | "management) on adapter %s, port 0x%016Lx for " | |
3718 | "unit LUN 0x%016Lx\n", | |
3719 | zfcp_get_busid_by_adapter(adapter), | |
3720 | unit->port->wwpn, | |
3721 | unit->fcp_lun); | |
3722 | zfcp_fsf_req_free(fsf_req); | |
3723 | fsf_req = NULL; | |
3724 | goto out; | |
3725 | } | |
3726 | ||
3727 | ZFCP_LOG_TRACE("Send FCP Command (task management function) initiated " | |
3728 | "(adapter %s, port 0x%016Lx, unit 0x%016Lx, " | |
3729 | "tm_flags=0x%x)\n", | |
3730 | zfcp_get_busid_by_adapter(adapter), | |
3731 | unit->port->wwpn, | |
3732 | unit->fcp_lun, | |
3733 | tm_flags); | |
3734 | out: | |
3735 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
3736 | return fsf_req; | |
3737 | } | |
3738 | ||
3739 | /* | |
3740 | * function: zfcp_fsf_send_fcp_command_handler | |
3741 | * | |
3742 | * purpose: is called for finished Send FCP Command | |
3743 | * | |
3744 | * returns: | |
3745 | */ | |
3746 | static int | |
3747 | zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *fsf_req) | |
3748 | { | |
3749 | int retval = -EINVAL; | |
3750 | struct zfcp_unit *unit; | |
3751 | struct fsf_qtcb_header *header; | |
3752 | u16 subtable, rule, counter; | |
3753 | ||
3754 | header = &fsf_req->qtcb->header; | |
3755 | ||
3756 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)) | |
059c97d0 | 3757 | unit = (struct zfcp_unit *) fsf_req->data; |
1da177e4 | 3758 | else |
059c97d0 | 3759 | unit = fsf_req->unit; |
1da177e4 LT |
3760 | |
3761 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
3762 | /* go directly to calls of special handlers */ | |
3763 | goto skip_fsfstatus; | |
3764 | } | |
3765 | ||
3766 | /* evaluate FSF status in QTCB */ | |
3767 | switch (header->fsf_status) { | |
3768 | ||
3769 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
3770 | ZFCP_LOG_INFO("Temporary port identifier 0x%x for port " |
3771 | "0x%016Lx on adapter %s invalid\n", | |
3772 | unit->port->handle, | |
3773 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3774 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3775 | (char *) &header->fsf_status_qual, | |
3776 | sizeof (union fsf_status_qual)); | |
3777 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3778 | "fsf_s_phand_nv"); | |
3779 | zfcp_erp_adapter_reopen(unit->port->adapter, 0); | |
3780 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3781 | break; | |
3782 | ||
3783 | case FSF_LUN_HANDLE_NOT_VALID: | |
1da177e4 LT |
3784 | ZFCP_LOG_INFO("Temporary LUN identifier 0x%x for unit " |
3785 | "0x%016Lx on port 0x%016Lx on adapter %s is " | |
3786 | "invalid. This may happen occasionally.\n", | |
3787 | unit->handle, | |
3788 | unit->fcp_lun, | |
3789 | unit->port->wwpn, | |
3790 | zfcp_get_busid_by_unit(unit)); | |
3791 | ZFCP_LOG_NORMAL("Status qualifier data:\n"); | |
3792 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL, | |
3793 | (char *) &header->fsf_status_qual, | |
3794 | sizeof (union fsf_status_qual)); | |
3795 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3796 | "fsf_s_uhand_nv"); | |
3797 | zfcp_erp_port_reopen(unit->port, 0); | |
3798 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3799 | break; | |
3800 | ||
3801 | case FSF_HANDLE_MISMATCH: | |
1da177e4 LT |
3802 | ZFCP_LOG_NORMAL("bug: The port handle 0x%x has changed " |
3803 | "unexpectedly. (adapter %s, port 0x%016Lx, " | |
3804 | "unit 0x%016Lx)\n", | |
3805 | unit->port->handle, | |
3806 | zfcp_get_busid_by_unit(unit), | |
3807 | unit->port->wwpn, | |
3808 | unit->fcp_lun); | |
3809 | ZFCP_LOG_NORMAL("status qualifier:\n"); | |
3810 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL, | |
3811 | (char *) &header->fsf_status_qual, | |
3812 | sizeof (union fsf_status_qual)); | |
3813 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3814 | "fsf_s_hand_mis"); | |
3815 | zfcp_erp_adapter_reopen(unit->port->adapter, 0); | |
1da177e4 LT |
3816 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3817 | break; | |
3818 | ||
3819 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: | |
06506d00 AH |
3820 | ZFCP_LOG_INFO("error: adapter %s does not support fc " |
3821 | "class %d.\n", | |
3822 | zfcp_get_busid_by_unit(unit), | |
3823 | ZFCP_FC_SERVICE_CLASS_DEFAULT); | |
1da177e4 LT |
3824 | /* stop operation for this adapter */ |
3825 | debug_text_exception(fsf_req->adapter->erp_dbf, 0, | |
3826 | "fsf_s_class_nsup"); | |
3827 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0); | |
1da177e4 LT |
3828 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3829 | break; | |
3830 | ||
3831 | case FSF_FCPLUN_NOT_VALID: | |
1da177e4 LT |
3832 | ZFCP_LOG_NORMAL("bug: unit 0x%016Lx on port 0x%016Lx on " |
3833 | "adapter %s does not have correct unit " | |
3834 | "handle 0x%x\n", | |
3835 | unit->fcp_lun, | |
3836 | unit->port->wwpn, | |
3837 | zfcp_get_busid_by_unit(unit), | |
3838 | unit->handle); | |
3839 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
3840 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3841 | (char *) &header->fsf_status_qual, | |
3842 | sizeof (union fsf_status_qual)); | |
3843 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3844 | "fsf_s_fcp_lun_nv"); | |
3845 | zfcp_erp_port_reopen(unit->port, 0); | |
1da177e4 LT |
3846 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3847 | break; | |
3848 | ||
3849 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
3850 | ZFCP_LOG_NORMAL("Access denied, cannot send FCP command to " |
3851 | "unit 0x%016Lx on port 0x%016Lx on " | |
3852 | "adapter %s\n", unit->fcp_lun, unit->port->wwpn, | |
3853 | zfcp_get_busid_by_unit(unit)); | |
3854 | for (counter = 0; counter < 2; counter++) { | |
3855 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
3856 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
3857 | switch (subtable) { | |
3858 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
3859 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
3860 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
3861 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
3862 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
3863 | zfcp_act_subtable_type[subtable], rule); | |
3864 | break; | |
3865 | } | |
3866 | } | |
3867 | debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_access"); | |
3868 | zfcp_erp_unit_access_denied(unit); | |
3869 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3870 | break; | |
3871 | ||
3872 | case FSF_DIRECTION_INDICATOR_NOT_VALID: | |
1da177e4 LT |
3873 | ZFCP_LOG_INFO("bug: Invalid data direction given for unit " |
3874 | "0x%016Lx on port 0x%016Lx on adapter %s " | |
3875 | "(debug info %d)\n", | |
3876 | unit->fcp_lun, | |
3877 | unit->port->wwpn, | |
3878 | zfcp_get_busid_by_unit(unit), | |
3879 | fsf_req->qtcb->bottom.io.data_direction); | |
3880 | /* stop operation for this adapter */ | |
3881 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
3882 | "fsf_s_dir_ind_nv"); | |
3883 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0); | |
1da177e4 LT |
3884 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3885 | break; | |
3886 | ||
3887 | case FSF_CMND_LENGTH_NOT_VALID: | |
1da177e4 LT |
3888 | ZFCP_LOG_NORMAL |
3889 | ("bug: An invalid control-data-block length field " | |
3890 | "was found in a command for unit 0x%016Lx on port " | |
3891 | "0x%016Lx on adapter %s " "(debug info %d)\n", | |
3892 | unit->fcp_lun, unit->port->wwpn, | |
3893 | zfcp_get_busid_by_unit(unit), | |
3894 | fsf_req->qtcb->bottom.io.fcp_cmnd_length); | |
3895 | /* stop operation for this adapter */ | |
3896 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
3897 | "fsf_s_cmd_len_nv"); | |
3898 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0); | |
1da177e4 LT |
3899 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3900 | break; | |
3901 | ||
3902 | case FSF_PORT_BOXED: | |
1da177e4 LT |
3903 | ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s " |
3904 | "needs to be reopened\n", | |
3905 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3906 | debug_text_event(fsf_req->adapter->erp_dbf, 2, "fsf_s_pboxed"); | |
d736a27b | 3907 | zfcp_erp_port_boxed(unit->port); |
1da177e4 LT |
3908 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
3909 | ZFCP_STATUS_FSFREQ_RETRY; | |
3910 | break; | |
3911 | ||
3912 | case FSF_LUN_BOXED: | |
1da177e4 LT |
3913 | ZFCP_LOG_NORMAL("unit needs to be reopened (adapter %s, " |
3914 | "wwpn=0x%016Lx, fcp_lun=0x%016Lx)\n", | |
3915 | zfcp_get_busid_by_unit(unit), | |
3916 | unit->port->wwpn, unit->fcp_lun); | |
3917 | debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_lboxed"); | |
d736a27b | 3918 | zfcp_erp_unit_boxed(unit); |
1da177e4 LT |
3919 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
3920 | | ZFCP_STATUS_FSFREQ_RETRY; | |
3921 | break; | |
3922 | ||
3923 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
3924 | switch (header->fsf_status_qual.word[0]) { |
3925 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
3926 | /* re-establish link to port */ |
3927 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3928 | "fsf_sq_ltest"); | |
65a8d4e1 | 3929 | zfcp_test_link(unit->port); |
1da177e4 LT |
3930 | break; |
3931 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
3932 | /* FIXME(hw) need proper specs for proper action */ |
3933 | /* let scsi stack deal with retries and escalation */ | |
3934 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3935 | "fsf_sq_ulp"); | |
1da177e4 LT |
3936 | break; |
3937 | default: | |
1da177e4 | 3938 | ZFCP_LOG_NORMAL |
516a4201 | 3939 | ("Unknown status qualifier 0x%x arrived.\n", |
1da177e4 LT |
3940 | header->fsf_status_qual.word[0]); |
3941 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
3942 | "fsf_sq_inval:"); | |
3943 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
3944 | &header->fsf_status_qual.word[0], | |
3945 | sizeof(u32)); | |
3946 | break; | |
3947 | } | |
516a4201 | 3948 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
3949 | break; |
3950 | ||
3951 | case FSF_GOOD: | |
1da177e4 LT |
3952 | break; |
3953 | ||
3954 | case FSF_FCP_RSP_AVAILABLE: | |
1da177e4 LT |
3955 | break; |
3956 | ||
3957 | default: | |
3958 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:"); | |
3959 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
3960 | &header->fsf_status, sizeof(u32)); | |
3961 | break; | |
3962 | } | |
3963 | ||
3964 | skip_fsfstatus: | |
3965 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT) { | |
3966 | retval = | |
3967 | zfcp_fsf_send_fcp_command_task_management_handler(fsf_req); | |
3968 | } else { | |
3969 | retval = zfcp_fsf_send_fcp_command_task_handler(fsf_req); | |
059c97d0 AH |
3970 | fsf_req->unit = NULL; |
3971 | zfcp_unit_put(unit); | |
1da177e4 LT |
3972 | } |
3973 | return retval; | |
3974 | } | |
3975 | ||
3976 | /* | |
3977 | * function: zfcp_fsf_send_fcp_command_task_handler | |
3978 | * | |
3979 | * purpose: evaluates FCP_RSP IU | |
3980 | * | |
3981 | * returns: | |
3982 | */ | |
3983 | static int | |
3984 | zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *fsf_req) | |
3985 | { | |
3986 | int retval = 0; | |
3987 | struct scsi_cmnd *scpnt; | |
3988 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) | |
3989 | &(fsf_req->qtcb->bottom.io.fcp_rsp); | |
3990 | struct fcp_cmnd_iu *fcp_cmnd_iu = (struct fcp_cmnd_iu *) | |
3991 | &(fsf_req->qtcb->bottom.io.fcp_cmnd); | |
3992 | u32 sns_len; | |
3993 | char *fcp_rsp_info = zfcp_get_fcp_rsp_info_ptr(fcp_rsp_iu); | |
3994 | unsigned long flags; | |
059c97d0 | 3995 | struct zfcp_unit *unit = fsf_req->unit; |
1da177e4 LT |
3996 | |
3997 | read_lock_irqsave(&fsf_req->adapter->abort_lock, flags); | |
059c97d0 | 3998 | scpnt = (struct scsi_cmnd *) fsf_req->data; |
1da177e4 LT |
3999 | if (unlikely(!scpnt)) { |
4000 | ZFCP_LOG_DEBUG | |
4001 | ("Command with fsf_req %p is not associated to " | |
4002 | "a scsi command anymore. Aborted?\n", fsf_req); | |
4003 | goto out; | |
4004 | } | |
4005 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ABORTED)) { | |
4006 | /* FIXME: (design) mid-layer should handle DID_ABORT like | |
4007 | * DID_SOFT_ERROR by retrying the request for devices | |
4008 | * that allow retries. | |
4009 | */ | |
4010 | ZFCP_LOG_DEBUG("Setting DID_SOFT_ERROR and SUGGEST_RETRY\n"); | |
4011 | set_host_byte(&scpnt->result, DID_SOFT_ERROR); | |
4012 | set_driver_byte(&scpnt->result, SUGGEST_RETRY); | |
4013 | goto skip_fsfstatus; | |
4014 | } | |
4015 | ||
4016 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
4017 | ZFCP_LOG_DEBUG("Setting DID_ERROR\n"); | |
4018 | set_host_byte(&scpnt->result, DID_ERROR); | |
4019 | goto skip_fsfstatus; | |
4020 | } | |
4021 | ||
4022 | /* set message byte of result in SCSI command */ | |
4023 | scpnt->result |= COMMAND_COMPLETE << 8; | |
4024 | ||
4025 | /* | |
4026 | * copy SCSI status code of FCP_STATUS of FCP_RSP IU to status byte | |
4027 | * of result in SCSI command | |
4028 | */ | |
4029 | scpnt->result |= fcp_rsp_iu->scsi_status; | |
4030 | if (unlikely(fcp_rsp_iu->scsi_status)) { | |
4031 | /* DEBUG */ | |
4032 | ZFCP_LOG_DEBUG("status for SCSI Command:\n"); | |
4033 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4034 | scpnt->cmnd, scpnt->cmd_len); | |
4035 | ZFCP_LOG_DEBUG("SCSI status code 0x%x\n", | |
4036 | fcp_rsp_iu->scsi_status); | |
4037 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4038 | (void *) fcp_rsp_iu, sizeof (struct fcp_rsp_iu)); | |
4039 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4040 | zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), | |
4041 | fcp_rsp_iu->fcp_sns_len); | |
4042 | } | |
4043 | ||
4044 | /* check FCP_RSP_INFO */ | |
4045 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) { | |
4046 | ZFCP_LOG_DEBUG("rsp_len is valid\n"); | |
4047 | switch (fcp_rsp_info[3]) { | |
4048 | case RSP_CODE_GOOD: | |
1da177e4 LT |
4049 | /* ok, continue */ |
4050 | ZFCP_LOG_TRACE("no failure or Task Management " | |
4051 | "Function complete\n"); | |
4052 | set_host_byte(&scpnt->result, DID_OK); | |
4053 | break; | |
4054 | case RSP_CODE_LENGTH_MISMATCH: | |
1da177e4 LT |
4055 | /* hardware bug */ |
4056 | ZFCP_LOG_NORMAL("bug: FCP response code indictates " | |
4057 | "that the fibrechannel protocol data " | |
4058 | "length differs from the burst length. " | |
4059 | "The problem occured on unit 0x%016Lx " | |
4060 | "on port 0x%016Lx on adapter %s", | |
4061 | unit->fcp_lun, | |
4062 | unit->port->wwpn, | |
4063 | zfcp_get_busid_by_unit(unit)); | |
4064 | /* dump SCSI CDB as prepared by zfcp */ | |
4065 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4066 | (char *) &fsf_req->qtcb-> | |
4067 | bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE); | |
1da177e4 LT |
4068 | set_host_byte(&scpnt->result, DID_ERROR); |
4069 | goto skip_fsfstatus; | |
4070 | case RSP_CODE_FIELD_INVALID: | |
1da177e4 LT |
4071 | /* driver or hardware bug */ |
4072 | ZFCP_LOG_NORMAL("bug: FCP response code indictates " | |
4073 | "that the fibrechannel protocol data " | |
4074 | "fields were incorrectly set up. " | |
4075 | "The problem occured on the unit " | |
4076 | "0x%016Lx on port 0x%016Lx on " | |
4077 | "adapter %s", | |
4078 | unit->fcp_lun, | |
4079 | unit->port->wwpn, | |
4080 | zfcp_get_busid_by_unit(unit)); | |
4081 | /* dump SCSI CDB as prepared by zfcp */ | |
4082 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4083 | (char *) &fsf_req->qtcb-> | |
4084 | bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE); | |
4085 | set_host_byte(&scpnt->result, DID_ERROR); | |
1da177e4 LT |
4086 | goto skip_fsfstatus; |
4087 | case RSP_CODE_RO_MISMATCH: | |
1da177e4 LT |
4088 | /* hardware bug */ |
4089 | ZFCP_LOG_NORMAL("bug: The FCP response code indicates " | |
4090 | "that conflicting values for the " | |
4091 | "fibrechannel payload offset from the " | |
4092 | "header were found. " | |
4093 | "The problem occured on unit 0x%016Lx " | |
4094 | "on port 0x%016Lx on adapter %s.\n", | |
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 | default: | |
4105 | ZFCP_LOG_NORMAL("bug: An invalid FCP response " | |
4106 | "code was detected for a command. " | |
4107 | "The problem occured on the unit " | |
4108 | "0x%016Lx on port 0x%016Lx on " | |
4109 | "adapter %s (debug info 0x%x)\n", | |
4110 | unit->fcp_lun, | |
4111 | unit->port->wwpn, | |
4112 | zfcp_get_busid_by_unit(unit), | |
4113 | fcp_rsp_info[3]); | |
4114 | /* dump SCSI CDB as prepared by zfcp */ | |
4115 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4116 | (char *) &fsf_req->qtcb-> | |
4117 | bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE); | |
1da177e4 | 4118 | set_host_byte(&scpnt->result, DID_ERROR); |
6f71d9bc | 4119 | goto skip_fsfstatus; |
1da177e4 LT |
4120 | } |
4121 | } | |
4122 | ||
4123 | /* check for sense data */ | |
4124 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_sns_len_valid)) { | |
4125 | sns_len = FSF_FCP_RSP_SIZE - | |
4126 | sizeof (struct fcp_rsp_iu) + fcp_rsp_iu->fcp_rsp_len; | |
4127 | ZFCP_LOG_TRACE("room for %i bytes sense data in QTCB\n", | |
4128 | sns_len); | |
4129 | sns_len = min(sns_len, (u32) SCSI_SENSE_BUFFERSIZE); | |
4130 | ZFCP_LOG_TRACE("room for %i bytes sense data in SCSI command\n", | |
4131 | SCSI_SENSE_BUFFERSIZE); | |
4132 | sns_len = min(sns_len, fcp_rsp_iu->fcp_sns_len); | |
4133 | ZFCP_LOG_TRACE("scpnt->result =0x%x, command was:\n", | |
4134 | scpnt->result); | |
4135 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, | |
4136 | (void *) &scpnt->cmnd, scpnt->cmd_len); | |
4137 | ||
4138 | ZFCP_LOG_TRACE("%i bytes sense data provided by FCP\n", | |
4139 | fcp_rsp_iu->fcp_sns_len); | |
4140 | memcpy(&scpnt->sense_buffer, | |
4141 | zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len); | |
4142 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, | |
4143 | (void *) &scpnt->sense_buffer, sns_len); | |
4144 | } | |
4145 | ||
4146 | /* check for overrun */ | |
4147 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_over)) { | |
4148 | ZFCP_LOG_INFO("A data overrun was detected for a command. " | |
4149 | "unit 0x%016Lx, port 0x%016Lx, adapter %s. " | |
4150 | "The response data length is " | |
4151 | "%d, the original length was %d.\n", | |
4152 | unit->fcp_lun, | |
4153 | unit->port->wwpn, | |
4154 | zfcp_get_busid_by_unit(unit), | |
4155 | fcp_rsp_iu->fcp_resid, | |
4156 | (int) zfcp_get_fcp_dl(fcp_cmnd_iu)); | |
4157 | } | |
4158 | ||
4159 | /* check for underrun */ | |
4160 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_under)) { | |
4161 | ZFCP_LOG_INFO("A data underrun was detected for a command. " | |
4162 | "unit 0x%016Lx, port 0x%016Lx, adapter %s. " | |
4163 | "The response data length is " | |
4164 | "%d, the original length was %d.\n", | |
4165 | unit->fcp_lun, | |
4166 | unit->port->wwpn, | |
4167 | zfcp_get_busid_by_unit(unit), | |
4168 | fcp_rsp_iu->fcp_resid, | |
4169 | (int) zfcp_get_fcp_dl(fcp_cmnd_iu)); | |
4170 | ||
4171 | scpnt->resid = fcp_rsp_iu->fcp_resid; | |
4172 | if (scpnt->request_bufflen - scpnt->resid < scpnt->underflow) | |
6f71d9bc | 4173 | set_host_byte(&scpnt->result, DID_ERROR); |
1da177e4 LT |
4174 | } |
4175 | ||
4176 | skip_fsfstatus: | |
4177 | ZFCP_LOG_DEBUG("scpnt->result =0x%x\n", scpnt->result); | |
4178 | ||
8a36e453 | 4179 | if (scpnt->result != 0) |
ed829ad6 | 4180 | zfcp_scsi_dbf_event_result("erro", 3, fsf_req->adapter, scpnt, fsf_req); |
8a36e453 | 4181 | else if (scpnt->retries > 0) |
ed829ad6 | 4182 | zfcp_scsi_dbf_event_result("retr", 4, fsf_req->adapter, scpnt, fsf_req); |
8a36e453 | 4183 | else |
ed829ad6 | 4184 | zfcp_scsi_dbf_event_result("norm", 6, fsf_req->adapter, scpnt, fsf_req); |
1da177e4 LT |
4185 | |
4186 | /* cleanup pointer (need this especially for abort) */ | |
4187 | scpnt->host_scribble = NULL; | |
4188 | ||
1da177e4 | 4189 | /* always call back */ |
1da177e4 LT |
4190 | (scpnt->scsi_done) (scpnt); |
4191 | ||
4192 | /* | |
4193 | * We must hold this lock until scsi_done has been called. | |
4194 | * Otherwise we may call scsi_done after abort regarding this | |
4195 | * command has completed. | |
4196 | * Note: scsi_done must not block! | |
4197 | */ | |
4198 | out: | |
4199 | read_unlock_irqrestore(&fsf_req->adapter->abort_lock, flags); | |
4200 | return retval; | |
4201 | } | |
4202 | ||
4203 | /* | |
4204 | * function: zfcp_fsf_send_fcp_command_task_management_handler | |
4205 | * | |
4206 | * purpose: evaluates FCP_RSP IU | |
4207 | * | |
4208 | * returns: | |
4209 | */ | |
4210 | static int | |
4211 | zfcp_fsf_send_fcp_command_task_management_handler(struct zfcp_fsf_req *fsf_req) | |
4212 | { | |
4213 | int retval = 0; | |
4214 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) | |
4215 | &(fsf_req->qtcb->bottom.io.fcp_rsp); | |
4216 | char *fcp_rsp_info = zfcp_get_fcp_rsp_info_ptr(fcp_rsp_iu); | |
059c97d0 | 4217 | struct zfcp_unit *unit = (struct zfcp_unit *) fsf_req->data; |
1da177e4 | 4218 | |
1da177e4 LT |
4219 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { |
4220 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
4221 | goto skip_fsfstatus; | |
4222 | } | |
4223 | ||
4224 | /* check FCP_RSP_INFO */ | |
4225 | switch (fcp_rsp_info[3]) { | |
4226 | case RSP_CODE_GOOD: | |
1da177e4 LT |
4227 | /* ok, continue */ |
4228 | ZFCP_LOG_DEBUG("no failure or Task Management " | |
4229 | "Function complete\n"); | |
4230 | break; | |
4231 | case RSP_CODE_TASKMAN_UNSUPP: | |
1da177e4 LT |
4232 | ZFCP_LOG_NORMAL("bug: A reuested task management function " |
4233 | "is not supported on the target device " | |
4234 | "unit 0x%016Lx, port 0x%016Lx, adapter %s\n ", | |
4235 | unit->fcp_lun, | |
4236 | unit->port->wwpn, | |
4237 | zfcp_get_busid_by_unit(unit)); | |
4238 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP; | |
4239 | break; | |
4240 | case RSP_CODE_TASKMAN_FAILED: | |
1da177e4 LT |
4241 | ZFCP_LOG_NORMAL("bug: A reuested task management function " |
4242 | "failed to complete successfully. " | |
4243 | "unit 0x%016Lx, port 0x%016Lx, adapter %s.\n", | |
4244 | unit->fcp_lun, | |
4245 | unit->port->wwpn, | |
4246 | zfcp_get_busid_by_unit(unit)); | |
4247 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
4248 | break; | |
4249 | default: | |
4250 | ZFCP_LOG_NORMAL("bug: An invalid FCP response " | |
4251 | "code was detected for a command. " | |
4252 | "unit 0x%016Lx, port 0x%016Lx, adapter %s " | |
4253 | "(debug info 0x%x)\n", | |
4254 | unit->fcp_lun, | |
4255 | unit->port->wwpn, | |
4256 | zfcp_get_busid_by_unit(unit), | |
4257 | fcp_rsp_info[3]); | |
4258 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
4259 | } | |
4260 | ||
4261 | skip_fsfstatus: | |
4262 | return retval; | |
4263 | } | |
4264 | ||
4265 | ||
4266 | /* | |
4267 | * function: zfcp_fsf_control_file | |
4268 | * | |
4269 | * purpose: Initiator of the control file upload/download FSF requests | |
4270 | * | |
4271 | * returns: 0 - FSF request is successfuly created and queued | |
4272 | * -EOPNOTSUPP - The FCP adapter does not have Control File support | |
4273 | * -EINVAL - Invalid direction specified | |
4274 | * -ENOMEM - Insufficient memory | |
4275 | * -EPERM - Cannot create FSF request or place it in QDIO queue | |
4276 | */ | |
4277 | int | |
4278 | zfcp_fsf_control_file(struct zfcp_adapter *adapter, | |
4279 | struct zfcp_fsf_req **fsf_req_ptr, | |
4280 | u32 fsf_command, | |
4281 | u32 option, | |
4282 | struct zfcp_sg_list *sg_list) | |
4283 | { | |
4284 | struct zfcp_fsf_req *fsf_req; | |
4285 | struct fsf_qtcb_bottom_support *bottom; | |
4286 | volatile struct qdio_buffer_element *sbale; | |
1da177e4 LT |
4287 | unsigned long lock_flags; |
4288 | int req_flags = 0; | |
4289 | int direction; | |
4290 | int retval = 0; | |
4291 | ||
aef4a983 | 4292 | if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) { |
1da177e4 LT |
4293 | ZFCP_LOG_INFO("cfdc not supported (adapter %s)\n", |
4294 | zfcp_get_busid_by_adapter(adapter)); | |
4295 | retval = -EOPNOTSUPP; | |
4296 | goto out; | |
4297 | } | |
4298 | ||
4299 | switch (fsf_command) { | |
4300 | ||
4301 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
4302 | direction = SBAL_FLAGS0_TYPE_WRITE; | |
4303 | if ((option != FSF_CFDC_OPTION_FULL_ACCESS) && | |
4304 | (option != FSF_CFDC_OPTION_RESTRICTED_ACCESS)) | |
4305 | req_flags = ZFCP_WAIT_FOR_SBAL; | |
4306 | break; | |
4307 | ||
4308 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
4309 | direction = SBAL_FLAGS0_TYPE_READ; | |
4310 | break; | |
4311 | ||
4312 | default: | |
4313 | ZFCP_LOG_INFO("Invalid FSF command code 0x%08x\n", fsf_command); | |
4314 | retval = -EINVAL; | |
4315 | goto out; | |
4316 | } | |
4317 | ||
1da177e4 LT |
4318 | retval = zfcp_fsf_req_create(adapter, fsf_command, req_flags, |
4319 | NULL, &lock_flags, &fsf_req); | |
4320 | if (retval < 0) { | |
4321 | ZFCP_LOG_INFO("error: Could not create FSF request for the " | |
4322 | "adapter %s\n", | |
4323 | zfcp_get_busid_by_adapter(adapter)); | |
4324 | retval = -EPERM; | |
4325 | goto unlock_queue_lock; | |
4326 | } | |
4327 | ||
4328 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
4329 | sbale[0].flags |= direction; | |
4330 | ||
4331 | bottom = &fsf_req->qtcb->bottom.support; | |
4332 | bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE; | |
4333 | bottom->option = option; | |
4334 | ||
4335 | if (sg_list->count > 0) { | |
4336 | int bytes; | |
4337 | ||
4338 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, direction, | |
4339 | sg_list->sg, sg_list->count, | |
4340 | ZFCP_MAX_SBALS_PER_REQ); | |
4341 | if (bytes != ZFCP_CFDC_MAX_CONTROL_FILE_SIZE) { | |
4342 | ZFCP_LOG_INFO( | |
4343 | "error: Could not create sufficient number of " | |
4344 | "SBALS for an FSF request to the adapter %s\n", | |
4345 | zfcp_get_busid_by_adapter(adapter)); | |
4346 | retval = -ENOMEM; | |
4347 | goto free_fsf_req; | |
4348 | } | |
4349 | } else | |
4350 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
4351 | ||
2abbe866 AH |
4352 | zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); |
4353 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
4354 | if (retval < 0) { |
4355 | ZFCP_LOG_INFO("initiation of cfdc up/download failed" | |
4356 | "(adapter %s)\n", | |
4357 | zfcp_get_busid_by_adapter(adapter)); | |
4358 | retval = -EPERM; | |
4359 | goto free_fsf_req; | |
4360 | } | |
4361 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
4362 | ||
4363 | ZFCP_LOG_NORMAL("Control file %s FSF request has been sent to the " | |
4364 | "adapter %s\n", | |
4365 | fsf_command == FSF_QTCB_DOWNLOAD_CONTROL_FILE ? | |
4366 | "download" : "upload", | |
4367 | zfcp_get_busid_by_adapter(adapter)); | |
4368 | ||
4369 | wait_event(fsf_req->completion_wq, | |
4370 | fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
4371 | ||
4372 | *fsf_req_ptr = fsf_req; | |
2abbe866 | 4373 | goto out; |
1da177e4 LT |
4374 | |
4375 | free_fsf_req: | |
4376 | zfcp_fsf_req_free(fsf_req); | |
4377 | unlock_queue_lock: | |
4378 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
1da177e4 LT |
4379 | out: |
4380 | return retval; | |
4381 | } | |
4382 | ||
4383 | ||
4384 | /* | |
4385 | * function: zfcp_fsf_control_file_handler | |
4386 | * | |
4387 | * purpose: Handler of the control file upload/download FSF requests | |
4388 | * | |
4389 | * returns: 0 - FSF request successfuly processed | |
4390 | * -EAGAIN - Operation has to be repeated because of a temporary problem | |
4391 | * -EACCES - There is no permission to execute an operation | |
4392 | * -EPERM - The control file is not in a right format | |
4393 | * -EIO - There is a problem with the FCP adapter | |
4394 | * -EINVAL - Invalid operation | |
4395 | * -EFAULT - User space memory I/O operation fault | |
4396 | */ | |
4397 | static int | |
4398 | zfcp_fsf_control_file_handler(struct zfcp_fsf_req *fsf_req) | |
4399 | { | |
4400 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
4401 | struct fsf_qtcb_header *header = &fsf_req->qtcb->header; | |
4402 | struct fsf_qtcb_bottom_support *bottom = &fsf_req->qtcb->bottom.support; | |
4403 | int retval = 0; | |
4404 | ||
4405 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
4406 | retval = -EINVAL; | |
4407 | goto skip_fsfstatus; | |
4408 | } | |
4409 | ||
4410 | switch (header->fsf_status) { | |
4411 | ||
4412 | case FSF_GOOD: | |
1da177e4 LT |
4413 | ZFCP_LOG_NORMAL( |
4414 | "The FSF request has been successfully completed " | |
4415 | "on the adapter %s\n", | |
4416 | zfcp_get_busid_by_adapter(adapter)); | |
4417 | break; | |
4418 | ||
4419 | case FSF_OPERATION_PARTIALLY_SUCCESSFUL: | |
1da177e4 LT |
4420 | if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE) { |
4421 | switch (header->fsf_status_qual.word[0]) { | |
4422 | ||
6f71d9bc JB |
4423 | case FSF_SQ_CFDC_HARDENED_ON_SE: |
4424 | ZFCP_LOG_NORMAL( | |
4425 | "CFDC on the adapter %s has being " | |
4426 | "hardened on primary and secondary SE\n", | |
4427 | zfcp_get_busid_by_adapter(adapter)); | |
4428 | break; | |
4429 | ||
1da177e4 LT |
4430 | case FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE: |
4431 | ZFCP_LOG_NORMAL( | |
4432 | "CFDC of the adapter %s could not " | |
4433 | "be saved on the SE\n", | |
4434 | zfcp_get_busid_by_adapter(adapter)); | |
4435 | break; | |
4436 | ||
4437 | case FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE2: | |
4438 | ZFCP_LOG_NORMAL( | |
4439 | "CFDC of the adapter %s could not " | |
4440 | "be copied to the secondary SE\n", | |
4441 | zfcp_get_busid_by_adapter(adapter)); | |
4442 | break; | |
4443 | ||
4444 | default: | |
4445 | ZFCP_LOG_NORMAL( | |
4446 | "CFDC could not be hardened " | |
4447 | "on the adapter %s\n", | |
4448 | zfcp_get_busid_by_adapter(adapter)); | |
4449 | } | |
4450 | } | |
4451 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4452 | retval = -EAGAIN; | |
4453 | break; | |
4454 | ||
4455 | case FSF_AUTHORIZATION_FAILURE: | |
1da177e4 LT |
4456 | ZFCP_LOG_NORMAL( |
4457 | "Adapter %s does not accept privileged commands\n", | |
4458 | zfcp_get_busid_by_adapter(adapter)); | |
4459 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4460 | retval = -EACCES; | |
4461 | break; | |
4462 | ||
4463 | case FSF_CFDC_ERROR_DETECTED: | |
1da177e4 LT |
4464 | ZFCP_LOG_NORMAL( |
4465 | "Error at position %d in the CFDC, " | |
4466 | "CFDC is discarded by the adapter %s\n", | |
4467 | header->fsf_status_qual.word[0], | |
4468 | zfcp_get_busid_by_adapter(adapter)); | |
4469 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4470 | retval = -EPERM; | |
4471 | break; | |
4472 | ||
4473 | case FSF_CONTROL_FILE_UPDATE_ERROR: | |
1da177e4 LT |
4474 | ZFCP_LOG_NORMAL( |
4475 | "Adapter %s cannot harden the control file, " | |
4476 | "file is discarded\n", | |
4477 | zfcp_get_busid_by_adapter(adapter)); | |
4478 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4479 | retval = -EIO; | |
4480 | break; | |
4481 | ||
4482 | case FSF_CONTROL_FILE_TOO_LARGE: | |
1da177e4 LT |
4483 | ZFCP_LOG_NORMAL( |
4484 | "Control file is too large, file is discarded " | |
4485 | "by the adapter %s\n", | |
4486 | zfcp_get_busid_by_adapter(adapter)); | |
4487 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4488 | retval = -EIO; | |
4489 | break; | |
4490 | ||
4491 | case FSF_ACCESS_CONFLICT_DETECTED: | |
1da177e4 LT |
4492 | if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE) |
4493 | ZFCP_LOG_NORMAL( | |
4494 | "CFDC has been discarded by the adapter %s, " | |
4495 | "because activation would impact " | |
4496 | "%d active connection(s)\n", | |
4497 | zfcp_get_busid_by_adapter(adapter), | |
4498 | header->fsf_status_qual.word[0]); | |
4499 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4500 | retval = -EIO; | |
4501 | break; | |
4502 | ||
4503 | case FSF_CONFLICTS_OVERRULED: | |
1da177e4 LT |
4504 | if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE) |
4505 | ZFCP_LOG_NORMAL( | |
4506 | "CFDC has been activated on the adapter %s, " | |
4507 | "but activation has impacted " | |
4508 | "%d active connection(s)\n", | |
4509 | zfcp_get_busid_by_adapter(adapter), | |
4510 | header->fsf_status_qual.word[0]); | |
4511 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4512 | retval = -EIO; | |
4513 | break; | |
4514 | ||
4515 | case FSF_UNKNOWN_OP_SUBTYPE: | |
1da177e4 LT |
4516 | ZFCP_LOG_NORMAL("unknown operation subtype (adapter: %s, " |
4517 | "op_subtype=0x%x)\n", | |
4518 | zfcp_get_busid_by_adapter(adapter), | |
4519 | bottom->operation_subtype); | |
4520 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4521 | retval = -EINVAL; | |
4522 | break; | |
4523 | ||
4524 | case FSF_INVALID_COMMAND_OPTION: | |
1da177e4 LT |
4525 | ZFCP_LOG_NORMAL( |
4526 | "Invalid option 0x%x has been specified " | |
4527 | "in QTCB bottom sent to the adapter %s\n", | |
4528 | bottom->option, | |
4529 | zfcp_get_busid_by_adapter(adapter)); | |
4530 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4531 | retval = -EINVAL; | |
4532 | break; | |
4533 | ||
4534 | default: | |
4535 | ZFCP_LOG_NORMAL( | |
4536 | "bug: An unknown/unexpected FSF status 0x%08x " | |
4537 | "was presented on the adapter %s\n", | |
4538 | header->fsf_status, | |
4539 | zfcp_get_busid_by_adapter(adapter)); | |
4540 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_sq_inval"); | |
4541 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
4542 | &header->fsf_status_qual.word[0], sizeof(u32)); | |
4543 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4544 | retval = -EINVAL; | |
4545 | break; | |
4546 | } | |
4547 | ||
4548 | skip_fsfstatus: | |
4549 | return retval; | |
4550 | } | |
4551 | ||
1da177e4 LT |
4552 | static inline int |
4553 | zfcp_fsf_req_sbal_check(unsigned long *flags, | |
4554 | struct zfcp_qdio_queue *queue, int needed) | |
4555 | { | |
4556 | write_lock_irqsave(&queue->queue_lock, *flags); | |
4557 | if (likely(atomic_read(&queue->free_count) >= needed)) | |
4558 | return 1; | |
4559 | write_unlock_irqrestore(&queue->queue_lock, *flags); | |
4560 | return 0; | |
4561 | } | |
4562 | ||
4563 | /* | |
4564 | * set qtcb pointer in fsf_req and initialize QTCB | |
4565 | */ | |
4566 | static inline void | |
8a36e453 | 4567 | zfcp_fsf_req_qtcb_init(struct zfcp_fsf_req *fsf_req) |
1da177e4 LT |
4568 | { |
4569 | if (likely(fsf_req->qtcb != NULL)) { | |
fea9d6c7 VS |
4570 | fsf_req->qtcb->prefix.req_seq_no = |
4571 | fsf_req->adapter->fsf_req_seq_no; | |
4572 | fsf_req->qtcb->prefix.req_id = fsf_req->req_id; | |
1da177e4 | 4573 | fsf_req->qtcb->prefix.ulp_info = ZFCP_ULP_INFO_VERSION; |
fea9d6c7 VS |
4574 | fsf_req->qtcb->prefix.qtcb_type = |
4575 | fsf_qtcb_type[fsf_req->fsf_command]; | |
1da177e4 | 4576 | fsf_req->qtcb->prefix.qtcb_version = ZFCP_QTCB_VERSION; |
fea9d6c7 | 4577 | fsf_req->qtcb->header.req_handle = fsf_req->req_id; |
8a36e453 | 4578 | fsf_req->qtcb->header.fsf_command = fsf_req->fsf_command; |
1da177e4 LT |
4579 | } |
4580 | } | |
4581 | ||
4582 | /** | |
4583 | * zfcp_fsf_req_sbal_get - try to get one SBAL in the request queue | |
4584 | * @adapter: adapter for which request queue is examined | |
4585 | * @req_flags: flags indicating whether to wait for needed SBAL or not | |
4586 | * @lock_flags: lock_flags if queue_lock is taken | |
4587 | * Return: 0 on success, otherwise -EIO, or -ERESTARTSYS | |
4588 | * Locks: lock adapter->request_queue->queue_lock on success | |
4589 | */ | |
4590 | static int | |
4591 | zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter, int req_flags, | |
4592 | unsigned long *lock_flags) | |
4593 | { | |
4594 | long ret; | |
4595 | struct zfcp_qdio_queue *req_queue = &adapter->request_queue; | |
4596 | ||
4597 | if (unlikely(req_flags & ZFCP_WAIT_FOR_SBAL)) { | |
4598 | ret = wait_event_interruptible_timeout(adapter->request_wq, | |
4599 | zfcp_fsf_req_sbal_check(lock_flags, req_queue, 1), | |
4600 | ZFCP_SBAL_TIMEOUT); | |
4601 | if (ret < 0) | |
4602 | return ret; | |
4603 | if (!ret) | |
4604 | return -EIO; | |
4605 | } else if (!zfcp_fsf_req_sbal_check(lock_flags, req_queue, 1)) | |
4606 | return -EIO; | |
4607 | ||
4608 | return 0; | |
4609 | } | |
4610 | ||
4611 | /* | |
4612 | * function: zfcp_fsf_req_create | |
4613 | * | |
4614 | * purpose: create an FSF request at the specified adapter and | |
4615 | * setup common fields | |
4616 | * | |
4617 | * returns: -ENOMEM if there was insufficient memory for a request | |
4618 | * -EIO if no qdio buffers could be allocate to the request | |
4619 | * -EINVAL/-EPERM on bug conditions in req_dequeue | |
4620 | * 0 in success | |
4621 | * | |
4622 | * note: The created request is returned by reference. | |
4623 | * | |
4624 | * locks: lock of concerned request queue must not be held, | |
4625 | * but is held on completion (write, irqsave) | |
4626 | */ | |
4627 | int | |
4628 | zfcp_fsf_req_create(struct zfcp_adapter *adapter, u32 fsf_cmd, int req_flags, | |
4629 | mempool_t *pool, unsigned long *lock_flags, | |
4630 | struct zfcp_fsf_req **fsf_req_p) | |
4631 | { | |
4632 | volatile struct qdio_buffer_element *sbale; | |
4633 | struct zfcp_fsf_req *fsf_req = NULL; | |
4634 | int ret = 0; | |
4635 | struct zfcp_qdio_queue *req_queue = &adapter->request_queue; | |
4636 | ||
4637 | /* allocate new FSF request */ | |
4638 | fsf_req = zfcp_fsf_req_alloc(pool, req_flags); | |
4639 | if (unlikely(NULL == fsf_req)) { | |
4640 | ZFCP_LOG_DEBUG("error: Could not put an FSF request into" | |
4641 | "the outbound (send) queue.\n"); | |
4642 | ret = -ENOMEM; | |
4643 | goto failed_fsf_req; | |
4644 | } | |
4645 | ||
8a36e453 MS |
4646 | fsf_req->adapter = adapter; |
4647 | fsf_req->fsf_command = fsf_cmd; | |
fea9d6c7 VS |
4648 | INIT_LIST_HEAD(&fsf_req->list); |
4649 | ||
4eff4a36 AH |
4650 | /* this is serialized (we are holding req_queue-lock of adapter */ |
4651 | if (adapter->req_no == 0) | |
4652 | adapter->req_no++; | |
fea9d6c7 | 4653 | fsf_req->req_id = adapter->req_no++; |
8a36e453 | 4654 | |
2abbe866 AH |
4655 | init_timer(&fsf_req->timer); |
4656 | zfcp_fsf_req_qtcb_init(fsf_req); | |
1da177e4 LT |
4657 | |
4658 | /* initialize waitqueue which may be used to wait on | |
4659 | this request completion */ | |
4660 | init_waitqueue_head(&fsf_req->completion_wq); | |
4661 | ||
4662 | ret = zfcp_fsf_req_sbal_get(adapter, req_flags, lock_flags); | |
4663 | if(ret < 0) { | |
4664 | goto failed_sbals; | |
4665 | } | |
4666 | ||
4667 | /* | |
4668 | * We hold queue_lock here. Check if QDIOUP is set and let request fail | |
4669 | * if it is not set (see also *_open_qdio and *_close_qdio). | |
4670 | */ | |
4671 | ||
4672 | if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)) { | |
4673 | write_unlock_irqrestore(&req_queue->queue_lock, *lock_flags); | |
4674 | ret = -EIO; | |
4675 | goto failed_sbals; | |
4676 | } | |
4677 | ||
8a36e453 MS |
4678 | if (fsf_req->qtcb) { |
4679 | fsf_req->seq_no = adapter->fsf_req_seq_no; | |
4680 | fsf_req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; | |
4681 | } | |
1da177e4 LT |
4682 | fsf_req->sbal_number = 1; |
4683 | fsf_req->sbal_first = req_queue->free_index; | |
4684 | fsf_req->sbal_curr = req_queue->free_index; | |
4685 | fsf_req->sbale_curr = 1; | |
4686 | ||
4687 | if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP)) { | |
4688 | fsf_req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; | |
4689 | } | |
4690 | ||
4691 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
4692 | ||
4693 | /* setup common SBALE fields */ | |
fea9d6c7 | 4694 | sbale[0].addr = (void *) fsf_req->req_id; |
1da177e4 LT |
4695 | sbale[0].flags |= SBAL_FLAGS0_COMMAND; |
4696 | if (likely(fsf_req->qtcb != NULL)) { | |
4697 | sbale[1].addr = (void *) fsf_req->qtcb; | |
4698 | sbale[1].length = sizeof(struct fsf_qtcb); | |
4699 | } | |
4700 | ||
4701 | ZFCP_LOG_TRACE("got %i free BUFFERs starting at index %i\n", | |
4702 | fsf_req->sbal_number, fsf_req->sbal_first); | |
4703 | ||
4704 | goto success; | |
4705 | ||
4706 | failed_sbals: | |
4707 | /* dequeue new FSF request previously enqueued */ | |
4708 | zfcp_fsf_req_free(fsf_req); | |
4709 | fsf_req = NULL; | |
4710 | ||
4711 | failed_fsf_req: | |
4712 | write_lock_irqsave(&req_queue->queue_lock, *lock_flags); | |
4713 | success: | |
4714 | *fsf_req_p = fsf_req; | |
4715 | return ret; | |
4716 | } | |
4717 | ||
4718 | /* | |
4719 | * function: zfcp_fsf_req_send | |
4720 | * | |
4721 | * purpose: start transfer of FSF request via QDIO | |
4722 | * | |
4723 | * returns: 0 - request transfer succesfully started | |
4724 | * !0 - start of request transfer failed | |
4725 | */ | |
2abbe866 | 4726 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *fsf_req) |
1da177e4 LT |
4727 | { |
4728 | struct zfcp_adapter *adapter; | |
4729 | struct zfcp_qdio_queue *req_queue; | |
4730 | volatile struct qdio_buffer_element *sbale; | |
8a36e453 | 4731 | int inc_seq_no; |
1da177e4 | 4732 | int new_distance_from_int; |
fea9d6c7 | 4733 | u64 dbg_tmp[2]; |
1da177e4 LT |
4734 | int retval = 0; |
4735 | ||
4736 | adapter = fsf_req->adapter; | |
4737 | req_queue = &adapter->request_queue, | |
4738 | ||
4739 | ||
4740 | /* FIXME(debug): remove it later */ | |
4741 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_first, 0); | |
4742 | ZFCP_LOG_DEBUG("SBALE0 flags=0x%x\n", sbale[0].flags); | |
4743 | ZFCP_LOG_TRACE("HEX DUMP OF SBALE1 PAYLOAD:\n"); | |
4744 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, (char *) sbale[1].addr, | |
4745 | sbale[1].length); | |
4746 | ||
fea9d6c7 VS |
4747 | /* put allocated FSF request into hash table */ |
4748 | spin_lock(&adapter->req_list_lock); | |
4749 | zfcp_reqlist_add(adapter, fsf_req); | |
4750 | spin_unlock(&adapter->req_list_lock); | |
1da177e4 | 4751 | |
8a36e453 MS |
4752 | inc_seq_no = (fsf_req->qtcb != NULL); |
4753 | ||
1da177e4 LT |
4754 | ZFCP_LOG_TRACE("request queue of adapter %s: " |
4755 | "next free SBAL is %i, %i free SBALs\n", | |
4756 | zfcp_get_busid_by_adapter(adapter), | |
4757 | req_queue->free_index, | |
4758 | atomic_read(&req_queue->free_count)); | |
4759 | ||
4760 | ZFCP_LOG_DEBUG("calling do_QDIO adapter %s, flags=0x%x, queue_no=%i, " | |
4761 | "index_in_queue=%i, count=%i, buffers=%p\n", | |
4762 | zfcp_get_busid_by_adapter(adapter), | |
4763 | QDIO_FLAG_SYNC_OUTPUT, | |
4764 | 0, fsf_req->sbal_first, fsf_req->sbal_number, | |
4765 | &req_queue->buffer[fsf_req->sbal_first]); | |
4766 | ||
4767 | /* | |
4768 | * adjust the number of free SBALs in request queue as well as | |
4769 | * position of first one | |
4770 | */ | |
4771 | atomic_sub(fsf_req->sbal_number, &req_queue->free_count); | |
4772 | ZFCP_LOG_TRACE("free_count=%d\n", atomic_read(&req_queue->free_count)); | |
4773 | req_queue->free_index += fsf_req->sbal_number; /* increase */ | |
4774 | req_queue->free_index %= QDIO_MAX_BUFFERS_PER_Q; /* wrap if needed */ | |
4775 | new_distance_from_int = zfcp_qdio_determine_pci(req_queue, fsf_req); | |
4776 | ||
8a36e453 MS |
4777 | fsf_req->issued = get_clock(); |
4778 | ||
1da177e4 LT |
4779 | retval = do_QDIO(adapter->ccw_device, |
4780 | QDIO_FLAG_SYNC_OUTPUT, | |
4781 | 0, fsf_req->sbal_first, fsf_req->sbal_number, NULL); | |
4782 | ||
fea9d6c7 VS |
4783 | dbg_tmp[0] = (unsigned long) sbale[0].addr; |
4784 | dbg_tmp[1] = (u64) retval; | |
4785 | debug_event(adapter->erp_dbf, 4, (void *) dbg_tmp, 16); | |
4786 | ||
1da177e4 LT |
4787 | if (unlikely(retval)) { |
4788 | /* Queues are down..... */ | |
4789 | retval = -EIO; | |
2abbe866 | 4790 | del_timer(&fsf_req->timer); |
fea9d6c7 VS |
4791 | spin_lock(&adapter->req_list_lock); |
4792 | zfcp_reqlist_remove(adapter, fsf_req->req_id); | |
4793 | spin_unlock(&adapter->req_list_lock); | |
4794 | /* undo changes in request queue made for this request */ | |
1da177e4 LT |
4795 | zfcp_qdio_zero_sbals(req_queue->buffer, |
4796 | fsf_req->sbal_first, fsf_req->sbal_number); | |
4797 | atomic_add(fsf_req->sbal_number, &req_queue->free_count); | |
fea9d6c7 | 4798 | req_queue->free_index -= fsf_req->sbal_number; |
1da177e4 LT |
4799 | req_queue->free_index += QDIO_MAX_BUFFERS_PER_Q; |
4800 | req_queue->free_index %= QDIO_MAX_BUFFERS_PER_Q; /* wrap */ | |
fea9d6c7 | 4801 | zfcp_erp_adapter_reopen(adapter, 0); |
1da177e4 LT |
4802 | } else { |
4803 | req_queue->distance_from_int = new_distance_from_int; | |
4804 | /* | |
4805 | * increase FSF sequence counter - | |
4806 | * this must only be done for request successfully enqueued to | |
4807 | * QDIO this rejected requests may be cleaned up by calling | |
4808 | * routines resulting in missing sequence counter values | |
4809 | * otherwise, | |
4810 | */ | |
8a36e453 | 4811 | |
1da177e4 | 4812 | /* Don't increase for unsolicited status */ |
8a36e453 | 4813 | if (inc_seq_no) |
1da177e4 | 4814 | adapter->fsf_req_seq_no++; |
8a36e453 | 4815 | |
1da177e4 | 4816 | /* count FSF requests pending */ |
fea9d6c7 | 4817 | atomic_inc(&adapter->reqs_active); |
1da177e4 LT |
4818 | } |
4819 | return retval; | |
4820 | } | |
4821 | ||
1da177e4 | 4822 | #undef ZFCP_LOG_AREA |