Commit | Line | Data |
---|---|---|
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 | */ |
6fcc4711 | 179 | void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter) |
1da177e4 | 180 | { |
fea9d6c7 VS |
181 | struct zfcp_fsf_req *request, *tmp; |
182 | unsigned long flags; | |
6fcc4711 | 183 | LIST_HEAD(remove_queue); |
fea9d6c7 VS |
184 | unsigned int i, counter; |
185 | ||
186 | spin_lock_irqsave(&adapter->req_list_lock, flags); | |
187 | atomic_set(&adapter->reqs_active, 0); | |
6fcc4711 SS |
188 | for (i=0; i<REQUEST_LIST_SIZE; i++) |
189 | list_splice_init(&adapter->req_list[i], &remove_queue); | |
190 | ||
fea9d6c7 VS |
191 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); |
192 | ||
6fcc4711 SS |
193 | counter = 0; |
194 | list_for_each_entry_safe(request, tmp, &remove_queue, list) { | |
195 | zfcp_fsf_req_dismiss(adapter, request, counter); | |
196 | counter++; | |
197 | } | |
1da177e4 LT |
198 | } |
199 | ||
200 | /* | |
201 | * function: zfcp_fsf_req_complete | |
202 | * | |
203 | * purpose: Updates active counts and timers for openfcp-reqs | |
204 | * May cleanup request after req_eval returns | |
205 | * | |
206 | * returns: 0 - success | |
207 | * !0 - failure | |
208 | * | |
209 | * context: | |
210 | */ | |
211 | int | |
212 | zfcp_fsf_req_complete(struct zfcp_fsf_req *fsf_req) | |
213 | { | |
214 | int retval = 0; | |
215 | int cleanup; | |
1da177e4 LT |
216 | |
217 | if (unlikely(fsf_req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) { | |
218 | ZFCP_LOG_DEBUG("Status read response received\n"); | |
219 | /* | |
220 | * Note: all cleanup handling is done in the callchain of | |
221 | * the function call-chain below. | |
222 | */ | |
223 | zfcp_fsf_status_read_handler(fsf_req); | |
224 | goto out; | |
2abbe866 AH |
225 | } else { |
226 | del_timer(&fsf_req->timer); | |
1da177e4 | 227 | zfcp_fsf_protstatus_eval(fsf_req); |
2abbe866 | 228 | } |
1da177e4 LT |
229 | |
230 | /* | |
231 | * fsf_req may be deleted due to waking up functions, so | |
232 | * cleanup is saved here and used later | |
233 | */ | |
234 | if (likely(fsf_req->status & ZFCP_STATUS_FSFREQ_CLEANUP)) | |
235 | cleanup = 1; | |
236 | else | |
237 | cleanup = 0; | |
238 | ||
239 | fsf_req->status |= ZFCP_STATUS_FSFREQ_COMPLETED; | |
240 | ||
241 | /* cleanup request if requested by initiator */ | |
242 | if (likely(cleanup)) { | |
243 | ZFCP_LOG_TRACE("removing FSF request %p\n", fsf_req); | |
244 | /* | |
245 | * lock must not be held here since it will be | |
246 | * grabed by the called routine, too | |
247 | */ | |
1db2c9c0 | 248 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
249 | } else { |
250 | /* notify initiator waiting for the requests completion */ | |
251 | ZFCP_LOG_TRACE("waking initiator of FSF request %p\n",fsf_req); | |
252 | /* | |
253 | * FIXME: Race! We must not access fsf_req here as it might have been | |
254 | * cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED | |
255 | * flag. It's an improbable case. But, we have the same paranoia for | |
256 | * the cleanup flag already. | |
257 | * Might better be handled using complete()? | |
258 | * (setting the flag and doing wakeup ought to be atomic | |
259 | * with regard to checking the flag as long as waitqueue is | |
260 | * part of the to be released structure) | |
261 | */ | |
262 | wake_up(&fsf_req->completion_wq); | |
263 | } | |
264 | ||
265 | out: | |
266 | return retval; | |
267 | } | |
268 | ||
269 | /* | |
270 | * function: zfcp_fsf_protstatus_eval | |
271 | * | |
272 | * purpose: evaluates the QTCB of the finished FSF request | |
273 | * and initiates appropriate actions | |
274 | * (usually calling FSF command specific handlers) | |
275 | * | |
276 | * returns: | |
277 | * | |
278 | * context: | |
279 | * | |
280 | * locks: | |
281 | */ | |
282 | static int | |
283 | zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *fsf_req) | |
284 | { | |
285 | int retval = 0; | |
286 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
8a36e453 MS |
287 | struct fsf_qtcb *qtcb = fsf_req->qtcb; |
288 | union fsf_prot_status_qual *prot_status_qual = | |
289 | &qtcb->prefix.prot_status_qual; | |
1da177e4 | 290 | |
8a36e453 | 291 | zfcp_hba_dbf_event_fsf_response(fsf_req); |
1da177e4 LT |
292 | |
293 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { | |
294 | ZFCP_LOG_DEBUG("fsf_req 0x%lx has been dismissed\n", | |
295 | (unsigned long) fsf_req); | |
296 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
297 | ZFCP_STATUS_FSFREQ_RETRY; /* only for SCSI cmnds. */ | |
1da177e4 LT |
298 | goto skip_protstatus; |
299 | } | |
300 | ||
301 | /* log additional information provided by FSF (if any) */ | |
8a36e453 | 302 | if (unlikely(qtcb->header.log_length)) { |
1da177e4 | 303 | /* do not trust them ;-) */ |
8a36e453 | 304 | if (qtcb->header.log_start > sizeof(struct fsf_qtcb)) { |
1da177e4 LT |
305 | ZFCP_LOG_NORMAL |
306 | ("bug: ULP (FSF logging) log data starts " | |
307 | "beyond end of packet header. Ignored. " | |
308 | "(start=%i, size=%li)\n", | |
8a36e453 | 309 | qtcb->header.log_start, |
1da177e4 LT |
310 | sizeof(struct fsf_qtcb)); |
311 | goto forget_log; | |
312 | } | |
8a36e453 | 313 | if ((size_t) (qtcb->header.log_start + qtcb->header.log_length) |
1da177e4 LT |
314 | > sizeof(struct fsf_qtcb)) { |
315 | ZFCP_LOG_NORMAL("bug: ULP (FSF logging) log data ends " | |
316 | "beyond end of packet header. Ignored. " | |
317 | "(start=%i, length=%i, size=%li)\n", | |
8a36e453 MS |
318 | qtcb->header.log_start, |
319 | qtcb->header.log_length, | |
1da177e4 LT |
320 | sizeof(struct fsf_qtcb)); |
321 | goto forget_log; | |
322 | } | |
323 | ZFCP_LOG_TRACE("ULP log data: \n"); | |
324 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, | |
8a36e453 MS |
325 | (char *) qtcb + qtcb->header.log_start, |
326 | qtcb->header.log_length); | |
1da177e4 LT |
327 | } |
328 | forget_log: | |
329 | ||
330 | /* evaluate FSF Protocol Status */ | |
8a36e453 | 331 | switch (qtcb->prefix.prot_status) { |
1da177e4 LT |
332 | |
333 | case FSF_PROT_GOOD: | |
1da177e4 | 334 | case FSF_PROT_FSF_STATUS_PRESENTED: |
1da177e4 LT |
335 | break; |
336 | ||
337 | case FSF_PROT_QTCB_VERSION_ERROR: | |
1da177e4 LT |
338 | ZFCP_LOG_NORMAL("error: The adapter %s contains " |
339 | "microcode of version 0x%x, the device driver " | |
340 | "only supports 0x%x. Aborting.\n", | |
341 | zfcp_get_busid_by_adapter(adapter), | |
8a36e453 MS |
342 | prot_status_qual->version_error.fsf_version, |
343 | ZFCP_QTCB_VERSION); | |
1da177e4 | 344 | zfcp_erp_adapter_shutdown(adapter, 0); |
1da177e4 LT |
345 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
346 | break; | |
347 | ||
348 | case FSF_PROT_SEQ_NUMB_ERROR: | |
1da177e4 LT |
349 | ZFCP_LOG_NORMAL("bug: Sequence number mismatch between " |
350 | "driver (0x%x) and adapter %s (0x%x). " | |
351 | "Restarting all operations on this adapter.\n", | |
8a36e453 | 352 | qtcb->prefix.req_seq_no, |
1da177e4 | 353 | zfcp_get_busid_by_adapter(adapter), |
8a36e453 | 354 | prot_status_qual->sequence_error.exp_req_seq_no); |
1da177e4 | 355 | zfcp_erp_adapter_reopen(adapter, 0); |
1da177e4 LT |
356 | fsf_req->status |= ZFCP_STATUS_FSFREQ_RETRY; |
357 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
358 | break; | |
359 | ||
360 | case FSF_PROT_UNSUPP_QTCB_TYPE: | |
1da177e4 LT |
361 | ZFCP_LOG_NORMAL("error: Packet header type used by the " |
362 | "device driver is incompatible with " | |
363 | "that used on adapter %s. " | |
364 | "Stopping all operations on this adapter.\n", | |
365 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 | 366 | zfcp_erp_adapter_shutdown(adapter, 0); |
1da177e4 LT |
367 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
368 | break; | |
369 | ||
370 | case FSF_PROT_HOST_CONNECTION_INITIALIZING: | |
1da177e4 LT |
371 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
372 | atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT, | |
373 | &(adapter->status)); | |
1da177e4 LT |
374 | break; |
375 | ||
376 | case FSF_PROT_DUPLICATE_REQUEST_ID: | |
1da177e4 LT |
377 | ZFCP_LOG_NORMAL("bug: The request identifier 0x%Lx " |
378 | "to the adapter %s is ambiguous. " | |
aef4a983 MS |
379 | "Stopping all operations on this adapter.\n", |
380 | *(unsigned long long*) | |
381 | (&qtcb->bottom.support.req_handle), | |
1da177e4 | 382 | zfcp_get_busid_by_adapter(adapter)); |
1da177e4 | 383 | zfcp_erp_adapter_shutdown(adapter, 0); |
1da177e4 LT |
384 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
385 | break; | |
386 | ||
387 | case FSF_PROT_LINK_DOWN: | |
aef4a983 MS |
388 | zfcp_fsf_link_down_info_eval(adapter, |
389 | &prot_status_qual->link_down_info); | |
2f8f3ed5 | 390 | zfcp_erp_adapter_reopen(adapter, 0); |
1da177e4 LT |
391 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
392 | break; | |
393 | ||
394 | case FSF_PROT_REEST_QUEUE: | |
8a36e453 | 395 | ZFCP_LOG_NORMAL("The local link to adapter with " |
1da177e4 LT |
396 | "%s was re-plugged. " |
397 | "Re-starting operations on this adapter.\n", | |
398 | zfcp_get_busid_by_adapter(adapter)); | |
399 | /* All ports should be marked as ready to run again */ | |
400 | zfcp_erp_modify_adapter_status(adapter, | |
401 | ZFCP_STATUS_COMMON_RUNNING, | |
402 | ZFCP_SET); | |
403 | zfcp_erp_adapter_reopen(adapter, | |
404 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | |
405 | | ZFCP_STATUS_COMMON_ERP_FAILED); | |
1da177e4 LT |
406 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
407 | break; | |
408 | ||
409 | case FSF_PROT_ERROR_STATE: | |
1da177e4 LT |
410 | ZFCP_LOG_NORMAL("error: The adapter %s " |
411 | "has entered the error state. " | |
412 | "Restarting all operations on this " | |
413 | "adapter.\n", | |
414 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 | 415 | zfcp_erp_adapter_reopen(adapter, 0); |
1da177e4 LT |
416 | fsf_req->status |= ZFCP_STATUS_FSFREQ_RETRY; |
417 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
418 | break; | |
419 | ||
420 | default: | |
421 | ZFCP_LOG_NORMAL("bug: Transfer protocol status information " | |
422 | "provided by the adapter %s " | |
423 | "is not compatible with the device driver. " | |
424 | "Stopping all operations on this adapter. " | |
425 | "(debug info 0x%x).\n", | |
426 | zfcp_get_busid_by_adapter(adapter), | |
8a36e453 | 427 | qtcb->prefix.prot_status); |
1da177e4 LT |
428 | zfcp_erp_adapter_shutdown(adapter, 0); |
429 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
430 | } | |
431 | ||
432 | skip_protstatus: | |
433 | /* | |
434 | * always call specific handlers to give them a chance to do | |
435 | * something meaningful even in error cases | |
436 | */ | |
437 | zfcp_fsf_fsfstatus_eval(fsf_req); | |
438 | return retval; | |
439 | } | |
440 | ||
441 | /* | |
442 | * function: zfcp_fsf_fsfstatus_eval | |
443 | * | |
444 | * purpose: evaluates FSF status of completed FSF request | |
445 | * and acts accordingly | |
446 | * | |
447 | * returns: | |
448 | */ | |
449 | static int | |
450 | zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *fsf_req) | |
451 | { | |
452 | int retval = 0; | |
453 | ||
454 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
455 | goto skip_fsfstatus; | |
456 | } | |
457 | ||
458 | /* evaluate FSF Status */ | |
459 | switch (fsf_req->qtcb->header.fsf_status) { | |
460 | case FSF_UNKNOWN_COMMAND: | |
1da177e4 LT |
461 | ZFCP_LOG_NORMAL("bug: Command issued by the device driver is " |
462 | "not known by the adapter %s " | |
463 | "Stopping all operations on this adapter. " | |
464 | "(debug info 0x%x).\n", | |
465 | zfcp_get_busid_by_adapter(fsf_req->adapter), | |
466 | fsf_req->qtcb->header.fsf_command); | |
1da177e4 | 467 | zfcp_erp_adapter_shutdown(fsf_req->adapter, 0); |
1da177e4 LT |
468 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
469 | break; | |
470 | ||
471 | case FSF_FCP_RSP_AVAILABLE: | |
1da177e4 LT |
472 | ZFCP_LOG_DEBUG("FCP Sense data will be presented to the " |
473 | "SCSI stack.\n"); | |
1da177e4 LT |
474 | break; |
475 | ||
476 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
477 | zfcp_fsf_fsfstatus_qual_eval(fsf_req); |
478 | break; | |
1da177e4 LT |
479 | } |
480 | ||
481 | skip_fsfstatus: | |
482 | /* | |
483 | * always call specific handlers to give them a chance to do | |
484 | * something meaningful even in error cases | |
485 | */ | |
486 | zfcp_fsf_req_dispatch(fsf_req); | |
487 | ||
488 | return retval; | |
489 | } | |
490 | ||
491 | /* | |
492 | * function: zfcp_fsf_fsfstatus_qual_eval | |
493 | * | |
494 | * purpose: evaluates FSF status-qualifier of completed FSF request | |
495 | * and acts accordingly | |
496 | * | |
497 | * returns: | |
498 | */ | |
499 | static int | |
500 | zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *fsf_req) | |
501 | { | |
502 | int retval = 0; | |
503 | ||
504 | switch (fsf_req->qtcb->header.fsf_status_qual.word[0]) { | |
505 | case FSF_SQ_FCP_RSP_AVAILABLE: | |
1da177e4 LT |
506 | break; |
507 | case FSF_SQ_RETRY_IF_POSSIBLE: | |
1da177e4 | 508 | /* The SCSI-stack may now issue retries or escalate */ |
1da177e4 LT |
509 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
510 | break; | |
511 | case FSF_SQ_COMMAND_ABORTED: | |
1da177e4 | 512 | /* Carry the aborted state on to upper layer */ |
1da177e4 LT |
513 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTED; |
514 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
515 | break; | |
516 | case FSF_SQ_NO_RECOM: | |
1da177e4 LT |
517 | ZFCP_LOG_NORMAL("bug: No recommendation could be given for a" |
518 | "problem on the adapter %s " | |
519 | "Stopping all operations on this adapter. ", | |
520 | zfcp_get_busid_by_adapter(fsf_req->adapter)); | |
521 | zfcp_erp_adapter_shutdown(fsf_req->adapter, 0); | |
1da177e4 LT |
522 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
523 | break; | |
524 | case FSF_SQ_ULP_PROGRAMMING_ERROR: | |
1da177e4 LT |
525 | ZFCP_LOG_NORMAL("error: not enough SBALs for data transfer " |
526 | "(adapter %s)\n", | |
527 | zfcp_get_busid_by_adapter(fsf_req->adapter)); | |
1da177e4 LT |
528 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
529 | break; | |
530 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
531 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
532 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
533 | /* dealt with in the respective functions */ | |
534 | break; | |
535 | default: | |
536 | ZFCP_LOG_NORMAL("bug: Additional status info could " | |
537 | "not be interpreted properly.\n"); | |
538 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL, | |
539 | (char *) &fsf_req->qtcb->header.fsf_status_qual, | |
540 | sizeof (union fsf_status_qual)); | |
1da177e4 LT |
541 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
542 | break; | |
543 | } | |
544 | ||
545 | return retval; | |
546 | } | |
547 | ||
aef4a983 MS |
548 | /** |
549 | * zfcp_fsf_link_down_info_eval - evaluate link down information block | |
550 | */ | |
551 | static void | |
552 | zfcp_fsf_link_down_info_eval(struct zfcp_adapter *adapter, | |
553 | struct fsf_link_down_info *link_down) | |
554 | { | |
ee69ab7a MS |
555 | if (atomic_test_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, |
556 | &adapter->status)) | |
557 | return; | |
558 | ||
559 | atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status); | |
560 | ||
2f8f3ed5 AH |
561 | if (link_down == NULL) |
562 | goto out; | |
ee69ab7a | 563 | |
aef4a983 MS |
564 | switch (link_down->error_code) { |
565 | case FSF_PSQ_LINK_NO_LIGHT: | |
566 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
567 | "(no light detected)\n", | |
568 | zfcp_get_busid_by_adapter(adapter)); | |
569 | break; | |
570 | case FSF_PSQ_LINK_WRAP_PLUG: | |
571 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
572 | "(wrap plug detected)\n", | |
573 | zfcp_get_busid_by_adapter(adapter)); | |
574 | break; | |
575 | case FSF_PSQ_LINK_NO_FCP: | |
576 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
577 | "(adjacent node on link does not support FCP)\n", | |
578 | zfcp_get_busid_by_adapter(adapter)); | |
579 | break; | |
580 | case FSF_PSQ_LINK_FIRMWARE_UPDATE: | |
581 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
582 | "(firmware update in progress)\n", | |
583 | zfcp_get_busid_by_adapter(adapter)); | |
584 | break; | |
585 | case FSF_PSQ_LINK_INVALID_WWPN: | |
586 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
587 | "(duplicate or invalid WWPN detected)\n", | |
588 | zfcp_get_busid_by_adapter(adapter)); | |
589 | break; | |
590 | case FSF_PSQ_LINK_NO_NPIV_SUPPORT: | |
591 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
592 | "(no support for NPIV by Fabric)\n", | |
593 | zfcp_get_busid_by_adapter(adapter)); | |
594 | break; | |
595 | case FSF_PSQ_LINK_NO_FCP_RESOURCES: | |
596 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
597 | "(out of resource in FCP daughtercard)\n", | |
598 | zfcp_get_busid_by_adapter(adapter)); | |
599 | break; | |
600 | case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: | |
601 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
602 | "(out of resource in Fabric)\n", | |
603 | zfcp_get_busid_by_adapter(adapter)); | |
604 | break; | |
605 | case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: | |
606 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
607 | "(unable to Fabric login)\n", | |
608 | zfcp_get_busid_by_adapter(adapter)); | |
609 | break; | |
610 | case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: | |
611 | ZFCP_LOG_NORMAL("WWPN assignment file corrupted on adapter %s\n", | |
612 | zfcp_get_busid_by_adapter(adapter)); | |
613 | break; | |
614 | case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: | |
615 | ZFCP_LOG_NORMAL("Mode table corrupted on adapter %s\n", | |
616 | zfcp_get_busid_by_adapter(adapter)); | |
617 | break; | |
618 | case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: | |
619 | ZFCP_LOG_NORMAL("No WWPN for assignment table on adapter %s\n", | |
620 | zfcp_get_busid_by_adapter(adapter)); | |
621 | break; | |
622 | default: | |
623 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
624 | "(warning: unknown reason code %d)\n", | |
625 | zfcp_get_busid_by_adapter(adapter), | |
626 | link_down->error_code); | |
627 | } | |
628 | ||
629 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) | |
630 | ZFCP_LOG_DEBUG("Debug information to link down: " | |
631 | "primary_status=0x%02x " | |
632 | "ioerr_code=0x%02x " | |
633 | "action_code=0x%02x " | |
634 | "reason_code=0x%02x " | |
635 | "explanation_code=0x%02x " | |
636 | "vendor_specific_code=0x%02x\n", | |
637 | link_down->primary_status, | |
638 | link_down->ioerr_code, | |
639 | link_down->action_code, | |
640 | link_down->reason_code, | |
641 | link_down->explanation_code, | |
642 | link_down->vendor_specific_code); | |
643 | ||
2f8f3ed5 AH |
644 | out: |
645 | zfcp_erp_adapter_failed(adapter); | |
aef4a983 MS |
646 | } |
647 | ||
1da177e4 LT |
648 | /* |
649 | * function: zfcp_fsf_req_dispatch | |
650 | * | |
651 | * purpose: calls the appropriate command specific handler | |
652 | * | |
653 | * returns: | |
654 | */ | |
655 | static int | |
656 | zfcp_fsf_req_dispatch(struct zfcp_fsf_req *fsf_req) | |
657 | { | |
658 | struct zfcp_erp_action *erp_action = fsf_req->erp_action; | |
659 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
660 | int retval = 0; | |
661 | ||
1da177e4 LT |
662 | |
663 | switch (fsf_req->fsf_command) { | |
664 | ||
665 | case FSF_QTCB_FCP_CMND: | |
1da177e4 LT |
666 | zfcp_fsf_send_fcp_command_handler(fsf_req); |
667 | break; | |
668 | ||
669 | case FSF_QTCB_ABORT_FCP_CMND: | |
1da177e4 LT |
670 | zfcp_fsf_abort_fcp_command_handler(fsf_req); |
671 | break; | |
672 | ||
673 | case FSF_QTCB_SEND_GENERIC: | |
1da177e4 LT |
674 | zfcp_fsf_send_ct_handler(fsf_req); |
675 | break; | |
676 | ||
677 | case FSF_QTCB_OPEN_PORT_WITH_DID: | |
1da177e4 LT |
678 | zfcp_fsf_open_port_handler(fsf_req); |
679 | break; | |
680 | ||
681 | case FSF_QTCB_OPEN_LUN: | |
1da177e4 LT |
682 | zfcp_fsf_open_unit_handler(fsf_req); |
683 | break; | |
684 | ||
685 | case FSF_QTCB_CLOSE_LUN: | |
1da177e4 LT |
686 | zfcp_fsf_close_unit_handler(fsf_req); |
687 | break; | |
688 | ||
689 | case FSF_QTCB_CLOSE_PORT: | |
1da177e4 LT |
690 | zfcp_fsf_close_port_handler(fsf_req); |
691 | break; | |
692 | ||
693 | case FSF_QTCB_CLOSE_PHYSICAL_PORT: | |
1da177e4 LT |
694 | zfcp_fsf_close_physical_port_handler(fsf_req); |
695 | break; | |
696 | ||
697 | case FSF_QTCB_EXCHANGE_CONFIG_DATA: | |
1da177e4 LT |
698 | zfcp_fsf_exchange_config_data_handler(fsf_req); |
699 | break; | |
700 | ||
701 | case FSF_QTCB_EXCHANGE_PORT_DATA: | |
1da177e4 LT |
702 | zfcp_fsf_exchange_port_data_handler(fsf_req); |
703 | break; | |
704 | ||
705 | case FSF_QTCB_SEND_ELS: | |
1da177e4 LT |
706 | zfcp_fsf_send_els_handler(fsf_req); |
707 | break; | |
708 | ||
709 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
1da177e4 LT |
710 | zfcp_fsf_control_file_handler(fsf_req); |
711 | break; | |
712 | ||
713 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
1da177e4 LT |
714 | zfcp_fsf_control_file_handler(fsf_req); |
715 | break; | |
716 | ||
717 | default: | |
1da177e4 LT |
718 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
719 | ZFCP_LOG_NORMAL("bug: Command issued by the device driver is " | |
720 | "not supported by the adapter %s\n", | |
8a36e453 | 721 | zfcp_get_busid_by_adapter(adapter)); |
1da177e4 LT |
722 | if (fsf_req->fsf_command != fsf_req->qtcb->header.fsf_command) |
723 | ZFCP_LOG_NORMAL | |
724 | ("bug: Command issued by the device driver differs " | |
725 | "from the command returned by the adapter %s " | |
726 | "(debug info 0x%x, 0x%x).\n", | |
8a36e453 | 727 | zfcp_get_busid_by_adapter(adapter), |
1da177e4 LT |
728 | fsf_req->fsf_command, |
729 | fsf_req->qtcb->header.fsf_command); | |
730 | } | |
731 | ||
732 | if (!erp_action) | |
733 | return retval; | |
734 | ||
1da177e4 LT |
735 | zfcp_erp_async_handler(erp_action, 0); |
736 | ||
737 | return retval; | |
738 | } | |
739 | ||
740 | /* | |
741 | * function: zfcp_fsf_status_read | |
742 | * | |
743 | * purpose: initiates a Status Read command at the specified adapter | |
744 | * | |
745 | * returns: | |
746 | */ | |
747 | int | |
748 | zfcp_fsf_status_read(struct zfcp_adapter *adapter, int req_flags) | |
749 | { | |
750 | struct zfcp_fsf_req *fsf_req; | |
751 | struct fsf_status_read_buffer *status_buffer; | |
752 | unsigned long lock_flags; | |
753 | volatile struct qdio_buffer_element *sbale; | |
754 | int retval = 0; | |
755 | ||
756 | /* setup new FSF request */ | |
757 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS, | |
758 | req_flags | ZFCP_REQ_NO_QTCB, | |
759 | adapter->pool.fsf_req_status_read, | |
760 | &lock_flags, &fsf_req); | |
761 | if (retval < 0) { | |
762 | ZFCP_LOG_INFO("error: Could not create unsolicited status " | |
763 | "buffer for adapter %s.\n", | |
764 | zfcp_get_busid_by_adapter(adapter)); | |
765 | goto failed_req_create; | |
766 | } | |
767 | ||
768 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
769 | sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS; | |
770 | sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY; | |
771 | fsf_req->sbale_curr = 2; | |
772 | ||
773 | status_buffer = | |
774 | mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC); | |
775 | if (!status_buffer) { | |
776 | ZFCP_LOG_NORMAL("bug: could not get some buffer\n"); | |
777 | goto failed_buf; | |
778 | } | |
779 | memset(status_buffer, 0, sizeof (struct fsf_status_read_buffer)); | |
059c97d0 | 780 | fsf_req->data = (unsigned long) status_buffer; |
1da177e4 LT |
781 | |
782 | /* insert pointer to respective buffer */ | |
783 | sbale = zfcp_qdio_sbale_curr(fsf_req); | |
784 | sbale->addr = (void *) status_buffer; | |
785 | sbale->length = sizeof(struct fsf_status_read_buffer); | |
786 | ||
2abbe866 | 787 | retval = zfcp_fsf_req_send(fsf_req); |
1da177e4 LT |
788 | if (retval) { |
789 | ZFCP_LOG_DEBUG("error: Could not set-up unsolicited status " | |
790 | "environment.\n"); | |
791 | goto failed_req_send; | |
792 | } | |
793 | ||
794 | ZFCP_LOG_TRACE("Status Read request initiated (adapter%s)\n", | |
795 | zfcp_get_busid_by_adapter(adapter)); | |
796 | goto out; | |
797 | ||
798 | failed_req_send: | |
799 | mempool_free(status_buffer, adapter->pool.data_status_read); | |
800 | ||
801 | failed_buf: | |
802 | zfcp_fsf_req_free(fsf_req); | |
803 | failed_req_create: | |
8a36e453 | 804 | zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL); |
1da177e4 LT |
805 | out: |
806 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
807 | return retval; | |
808 | } | |
809 | ||
810 | static int | |
811 | zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *fsf_req) | |
812 | { | |
813 | struct fsf_status_read_buffer *status_buffer; | |
814 | struct zfcp_adapter *adapter; | |
815 | struct zfcp_port *port; | |
816 | unsigned long flags; | |
817 | ||
059c97d0 | 818 | status_buffer = (struct fsf_status_read_buffer *) fsf_req->data; |
1da177e4 LT |
819 | adapter = fsf_req->adapter; |
820 | ||
821 | read_lock_irqsave(&zfcp_data.config_lock, flags); | |
822 | list_for_each_entry(port, &adapter->port_list_head, list) | |
823 | if (port->d_id == (status_buffer->d_id & ZFCP_DID_MASK)) | |
824 | break; | |
825 | read_unlock_irqrestore(&zfcp_data.config_lock, flags); | |
826 | ||
827 | if (!port || (port->d_id != (status_buffer->d_id & ZFCP_DID_MASK))) { | |
828 | ZFCP_LOG_NORMAL("bug: Reopen port indication received for" | |
829 | "nonexisting port with d_id 0x%08x on " | |
830 | "adapter %s. Ignored.\n", | |
831 | status_buffer->d_id & ZFCP_DID_MASK, | |
832 | zfcp_get_busid_by_adapter(adapter)); | |
833 | goto out; | |
834 | } | |
835 | ||
836 | switch (status_buffer->status_subtype) { | |
837 | ||
838 | case FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT: | |
1da177e4 LT |
839 | debug_text_event(adapter->erp_dbf, 3, "unsol_pc_phys:"); |
840 | zfcp_erp_port_reopen(port, 0); | |
841 | break; | |
842 | ||
843 | case FSF_STATUS_READ_SUB_ERROR_PORT: | |
1da177e4 LT |
844 | debug_text_event(adapter->erp_dbf, 1, "unsol_pc_err:"); |
845 | zfcp_erp_port_shutdown(port, 0); | |
846 | break; | |
847 | ||
848 | default: | |
849 | debug_text_event(adapter->erp_dbf, 0, "unsol_unk_sub:"); | |
850 | debug_exception(adapter->erp_dbf, 0, | |
851 | &status_buffer->status_subtype, sizeof (u32)); | |
852 | ZFCP_LOG_NORMAL("bug: Undefined status subtype received " | |
853 | "for a reopen indication on port with " | |
854 | "d_id 0x%08x on the adapter %s. " | |
855 | "Ignored. (debug info 0x%x)\n", | |
856 | status_buffer->d_id, | |
857 | zfcp_get_busid_by_adapter(adapter), | |
858 | status_buffer->status_subtype); | |
859 | } | |
860 | out: | |
861 | return 0; | |
862 | } | |
863 | ||
864 | /* | |
865 | * function: zfcp_fsf_status_read_handler | |
866 | * | |
867 | * purpose: is called for finished Open Port command | |
868 | * | |
869 | * returns: | |
870 | */ | |
871 | static int | |
872 | zfcp_fsf_status_read_handler(struct zfcp_fsf_req *fsf_req) | |
873 | { | |
874 | int retval = 0; | |
875 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
876 | struct fsf_status_read_buffer *status_buffer = | |
059c97d0 | 877 | (struct fsf_status_read_buffer *) fsf_req->data; |
b7a52fa7 | 878 | struct fsf_bit_error_payload *fsf_bit_error; |
1da177e4 LT |
879 | |
880 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { | |
8a36e453 | 881 | zfcp_hba_dbf_event_fsf_unsol("dism", adapter, status_buffer); |
1da177e4 | 882 | mempool_free(status_buffer, adapter->pool.data_status_read); |
1db2c9c0 | 883 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
884 | goto out; |
885 | } | |
886 | ||
8a36e453 MS |
887 | zfcp_hba_dbf_event_fsf_unsol("read", adapter, status_buffer); |
888 | ||
1da177e4 LT |
889 | switch (status_buffer->status_type) { |
890 | ||
891 | case FSF_STATUS_READ_PORT_CLOSED: | |
1da177e4 LT |
892 | zfcp_fsf_status_read_port_closed(fsf_req); |
893 | break; | |
894 | ||
895 | case FSF_STATUS_READ_INCOMING_ELS: | |
1da177e4 LT |
896 | zfcp_fsf_incoming_els(fsf_req); |
897 | break; | |
898 | ||
899 | case FSF_STATUS_READ_SENSE_DATA_AVAIL: | |
1da177e4 LT |
900 | ZFCP_LOG_INFO("unsolicited sense data received (adapter %s)\n", |
901 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 LT |
902 | break; |
903 | ||
904 | case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: | |
b7a52fa7 RW |
905 | fsf_bit_error = (struct fsf_bit_error_payload *) |
906 | status_buffer->payload; | |
907 | ZFCP_LOG_NORMAL("Warning: bit error threshold data " | |
908 | "received (adapter %s, " | |
909 | "link failures = %i, loss of sync errors = %i, " | |
910 | "loss of signal errors = %i, " | |
911 | "primitive sequence errors = %i, " | |
912 | "invalid transmission word errors = %i, " | |
913 | "CRC errors = %i)\n", | |
914 | zfcp_get_busid_by_adapter(adapter), | |
915 | fsf_bit_error->link_failure_error_count, | |
916 | fsf_bit_error->loss_of_sync_error_count, | |
917 | fsf_bit_error->loss_of_signal_error_count, | |
918 | fsf_bit_error->primitive_sequence_error_count, | |
919 | fsf_bit_error->invalid_transmission_word_error_count, | |
920 | fsf_bit_error->crc_error_count); | |
921 | ZFCP_LOG_INFO("Additional bit error threshold data " | |
922 | "(adapter %s, " | |
923 | "primitive sequence event time-outs = %i, " | |
924 | "elastic buffer overrun errors = %i, " | |
925 | "advertised receive buffer-to-buffer credit = %i, " | |
926 | "current receice buffer-to-buffer credit = %i, " | |
927 | "advertised transmit buffer-to-buffer credit = %i, " | |
928 | "current transmit buffer-to-buffer credit = %i)\n", | |
929 | zfcp_get_busid_by_adapter(adapter), | |
930 | fsf_bit_error->primitive_sequence_event_timeout_count, | |
931 | fsf_bit_error->elastic_buffer_overrun_error_count, | |
932 | fsf_bit_error->advertised_receive_b2b_credit, | |
933 | fsf_bit_error->current_receive_b2b_credit, | |
934 | fsf_bit_error->advertised_transmit_b2b_credit, | |
935 | fsf_bit_error->current_transmit_b2b_credit); | |
1da177e4 LT |
936 | break; |
937 | ||
938 | case FSF_STATUS_READ_LINK_DOWN: | |
aef4a983 MS |
939 | switch (status_buffer->status_subtype) { |
940 | case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: | |
941 | ZFCP_LOG_INFO("Physical link to adapter %s is down\n", | |
942 | zfcp_get_busid_by_adapter(adapter)); | |
ee69ab7a MS |
943 | zfcp_fsf_link_down_info_eval(adapter, |
944 | (struct fsf_link_down_info *) | |
945 | &status_buffer->payload); | |
aef4a983 MS |
946 | break; |
947 | case FSF_STATUS_READ_SUB_FDISC_FAILED: | |
948 | ZFCP_LOG_INFO("Local link to adapter %s is down " | |
949 | "due to failed FDISC login\n", | |
ee69ab7a MS |
950 | zfcp_get_busid_by_adapter(adapter)); |
951 | zfcp_fsf_link_down_info_eval(adapter, | |
952 | (struct fsf_link_down_info *) | |
953 | &status_buffer->payload); | |
aef4a983 MS |
954 | break; |
955 | case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE: | |
956 | ZFCP_LOG_INFO("Local link to adapter %s is down " | |
957 | "due to firmware update on adapter\n", | |
958 | zfcp_get_busid_by_adapter(adapter)); | |
ee69ab7a | 959 | zfcp_fsf_link_down_info_eval(adapter, NULL); |
aef4a983 MS |
960 | break; |
961 | default: | |
962 | ZFCP_LOG_INFO("Local link to adapter %s is down " | |
963 | "due to unknown reason\n", | |
964 | zfcp_get_busid_by_adapter(adapter)); | |
ee69ab7a | 965 | zfcp_fsf_link_down_info_eval(adapter, NULL); |
aef4a983 | 966 | }; |
1da177e4 LT |
967 | break; |
968 | ||
969 | case FSF_STATUS_READ_LINK_UP: | |
aef4a983 | 970 | ZFCP_LOG_NORMAL("Local link to adapter %s was replugged. " |
ee69ab7a MS |
971 | "Restarting operations on this adapter\n", |
972 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 LT |
973 | /* All ports should be marked as ready to run again */ |
974 | zfcp_erp_modify_adapter_status(adapter, | |
975 | ZFCP_STATUS_COMMON_RUNNING, | |
976 | ZFCP_SET); | |
977 | zfcp_erp_adapter_reopen(adapter, | |
978 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | |
979 | | ZFCP_STATUS_COMMON_ERP_FAILED); | |
980 | break; | |
981 | ||
9eb69aff MS |
982 | case FSF_STATUS_READ_NOTIFICATION_LOST: |
983 | ZFCP_LOG_NORMAL("Unsolicited status notification(s) lost: " | |
984 | "adapter %s%s%s%s%s%s%s%s%s\n", | |
985 | zfcp_get_busid_by_adapter(adapter), | |
986 | (status_buffer->status_subtype & | |
987 | FSF_STATUS_READ_SUB_INCOMING_ELS) ? | |
988 | ", incoming ELS" : "", | |
989 | (status_buffer->status_subtype & | |
990 | FSF_STATUS_READ_SUB_SENSE_DATA) ? | |
991 | ", sense data" : "", | |
992 | (status_buffer->status_subtype & | |
993 | FSF_STATUS_READ_SUB_LINK_STATUS) ? | |
994 | ", link status change" : "", | |
995 | (status_buffer->status_subtype & | |
996 | FSF_STATUS_READ_SUB_PORT_CLOSED) ? | |
997 | ", port close" : "", | |
998 | (status_buffer->status_subtype & | |
999 | FSF_STATUS_READ_SUB_BIT_ERROR_THRESHOLD) ? | |
1000 | ", bit error exception" : "", | |
1001 | (status_buffer->status_subtype & | |
1002 | FSF_STATUS_READ_SUB_ACT_UPDATED) ? | |
1003 | ", ACT update" : "", | |
1004 | (status_buffer->status_subtype & | |
1005 | FSF_STATUS_READ_SUB_ACT_HARDENED) ? | |
1006 | ", ACT hardening" : "", | |
1007 | (status_buffer->status_subtype & | |
1008 | FSF_STATUS_READ_SUB_FEATURE_UPDATE_ALERT) ? | |
1009 | ", adapter feature change" : ""); | |
1010 | ||
1011 | if (status_buffer->status_subtype & | |
1012 | FSF_STATUS_READ_SUB_ACT_UPDATED) | |
1013 | zfcp_erp_adapter_access_changed(adapter); | |
1014 | break; | |
1015 | ||
1da177e4 | 1016 | case FSF_STATUS_READ_CFDC_UPDATED: |
8a36e453 | 1017 | ZFCP_LOG_NORMAL("CFDC has been updated on the adapter %s\n", |
1da177e4 LT |
1018 | zfcp_get_busid_by_adapter(adapter)); |
1019 | zfcp_erp_adapter_access_changed(adapter); | |
1020 | break; | |
1021 | ||
1022 | case FSF_STATUS_READ_CFDC_HARDENED: | |
1da177e4 LT |
1023 | switch (status_buffer->status_subtype) { |
1024 | case FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE: | |
8a36e453 | 1025 | ZFCP_LOG_NORMAL("CFDC of adapter %s saved on SE\n", |
1da177e4 LT |
1026 | zfcp_get_busid_by_adapter(adapter)); |
1027 | break; | |
1028 | case FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE2: | |
8a36e453 | 1029 | ZFCP_LOG_NORMAL("CFDC of adapter %s has been copied " |
1da177e4 LT |
1030 | "to the secondary SE\n", |
1031 | zfcp_get_busid_by_adapter(adapter)); | |
1032 | break; | |
1033 | default: | |
8a36e453 | 1034 | ZFCP_LOG_NORMAL("CFDC of adapter %s has been hardened\n", |
1da177e4 LT |
1035 | zfcp_get_busid_by_adapter(adapter)); |
1036 | } | |
1037 | break; | |
1038 | ||
aef4a983 MS |
1039 | case FSF_STATUS_READ_FEATURE_UPDATE_ALERT: |
1040 | debug_text_event(adapter->erp_dbf, 2, "unsol_features:"); | |
1041 | ZFCP_LOG_INFO("List of supported features on adapter %s has " | |
1042 | "been changed from 0x%08X to 0x%08X\n", | |
1043 | zfcp_get_busid_by_adapter(adapter), | |
1044 | *(u32*) (status_buffer->payload + 4), | |
1045 | *(u32*) (status_buffer->payload)); | |
1046 | adapter->adapter_features = *(u32*) status_buffer->payload; | |
1047 | break; | |
1048 | ||
1da177e4 | 1049 | default: |
8a36e453 | 1050 | ZFCP_LOG_NORMAL("warning: An unsolicited status packet of unknown " |
1da177e4 LT |
1051 | "type was received (debug info 0x%x)\n", |
1052 | status_buffer->status_type); | |
1053 | ZFCP_LOG_DEBUG("Dump of status_read_buffer %p:\n", | |
1054 | status_buffer); | |
1055 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
1056 | (char *) status_buffer, | |
1057 | sizeof (struct fsf_status_read_buffer)); | |
1058 | break; | |
1059 | } | |
1060 | mempool_free(status_buffer, adapter->pool.data_status_read); | |
1db2c9c0 | 1061 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
1062 | /* |
1063 | * recycle buffer and start new request repeat until outbound | |
1064 | * queue is empty or adapter shutdown is requested | |
1065 | */ | |
1066 | /* | |
1067 | * FIXME(qdio): | |
1068 | * we may wait in the req_create for 5s during shutdown, so | |
1069 | * qdio_cleanup will have to wait at least that long before returning | |
1070 | * with failure to allow us a proper cleanup under all circumstances | |
1071 | */ | |
1072 | /* | |
1073 | * FIXME: | |
1074 | * allocation failure possible? (Is this code needed?) | |
1075 | */ | |
1076 | retval = zfcp_fsf_status_read(adapter, 0); | |
1077 | if (retval < 0) { | |
1078 | ZFCP_LOG_INFO("Failed to create unsolicited status read " | |
1079 | "request for the adapter %s.\n", | |
1080 | zfcp_get_busid_by_adapter(adapter)); | |
1081 | /* temporary fix to avoid status read buffer shortage */ | |
1082 | adapter->status_read_failed++; | |
1083 | if ((ZFCP_STATUS_READS_RECOM - adapter->status_read_failed) | |
1084 | < ZFCP_STATUS_READ_FAILED_THRESHOLD) { | |
1085 | ZFCP_LOG_INFO("restart adapter %s due to status read " | |
1086 | "buffer shortage\n", | |
1087 | zfcp_get_busid_by_adapter(adapter)); | |
1088 | zfcp_erp_adapter_reopen(adapter, 0); | |
1089 | } | |
1090 | } | |
1091 | out: | |
1092 | return retval; | |
1093 | } | |
1094 | ||
1095 | /* | |
1096 | * function: zfcp_fsf_abort_fcp_command | |
1097 | * | |
1098 | * purpose: tells FSF to abort a running SCSI command | |
1099 | * | |
1100 | * returns: address of initiated FSF request | |
1101 | * NULL - request could not be initiated | |
1102 | * | |
1103 | * FIXME(design): should be watched by a timeout !!! | |
1104 | * FIXME(design) shouldn't this be modified to return an int | |
1105 | * also...don't know how though | |
1106 | */ | |
1107 | struct zfcp_fsf_req * | |
1108 | zfcp_fsf_abort_fcp_command(unsigned long old_req_id, | |
1109 | struct zfcp_adapter *adapter, | |
1110 | struct zfcp_unit *unit, int req_flags) | |
1111 | { | |
1112 | volatile struct qdio_buffer_element *sbale; | |
1da177e4 | 1113 | struct zfcp_fsf_req *fsf_req = NULL; |
2abbe866 | 1114 | unsigned long lock_flags; |
1da177e4 LT |
1115 | int retval = 0; |
1116 | ||
1117 | /* setup new FSF request */ | |
1118 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND, | |
1119 | req_flags, adapter->pool.fsf_req_abort, | |
1120 | &lock_flags, &fsf_req); | |
1121 | if (retval < 0) { | |
1122 | ZFCP_LOG_INFO("error: Failed to create an abort command " | |
1123 | "request for lun 0x%016Lx on port 0x%016Lx " | |
1124 | "on adapter %s.\n", | |
1125 | unit->fcp_lun, | |
1126 | unit->port->wwpn, | |
1127 | zfcp_get_busid_by_adapter(adapter)); | |
1128 | goto out; | |
1129 | } | |
1130 | ||
1131 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
1132 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1133 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1134 | ||
059c97d0 | 1135 | fsf_req->data = (unsigned long) unit; |
1da177e4 LT |
1136 | |
1137 | /* set handles of unit and its parent port in QTCB */ | |
1138 | fsf_req->qtcb->header.lun_handle = unit->handle; | |
1139 | fsf_req->qtcb->header.port_handle = unit->port->handle; | |
1140 | ||
1141 | /* set handle of request which should be aborted */ | |
1142 | fsf_req->qtcb->bottom.support.req_handle = (u64) old_req_id; | |
1143 | ||
2abbe866 AH |
1144 | zfcp_fsf_start_timer(fsf_req, ZFCP_SCSI_ER_TIMEOUT); |
1145 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 | 1146 | if (retval) { |
1da177e4 LT |
1147 | ZFCP_LOG_INFO("error: Failed to send abort command request " |
1148 | "on adapter %s, port 0x%016Lx, unit 0x%016Lx\n", | |
1149 | zfcp_get_busid_by_adapter(adapter), | |
1150 | unit->port->wwpn, unit->fcp_lun); | |
1151 | zfcp_fsf_req_free(fsf_req); | |
1152 | fsf_req = NULL; | |
1153 | goto out; | |
1154 | } | |
1155 | ||
1156 | ZFCP_LOG_DEBUG("Abort FCP Command request initiated " | |
1157 | "(adapter%s, port d_id=0x%08x, " | |
1158 | "unit x%016Lx, old_req_id=0x%lx)\n", | |
1159 | zfcp_get_busid_by_adapter(adapter), | |
1160 | unit->port->d_id, | |
1161 | unit->fcp_lun, old_req_id); | |
1162 | out: | |
1163 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
1164 | return fsf_req; | |
1165 | } | |
1166 | ||
1167 | /* | |
1168 | * function: zfcp_fsf_abort_fcp_command_handler | |
1169 | * | |
1170 | * purpose: is called for finished Abort FCP Command request | |
1171 | * | |
1172 | * returns: | |
1173 | */ | |
1174 | static int | |
1175 | zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *new_fsf_req) | |
1176 | { | |
1177 | int retval = -EINVAL; | |
059c97d0 | 1178 | struct zfcp_unit *unit; |
1da177e4 LT |
1179 | unsigned char status_qual = |
1180 | new_fsf_req->qtcb->header.fsf_status_qual.word[0]; | |
1181 | ||
1da177e4 LT |
1182 | if (new_fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { |
1183 | /* do not set ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED */ | |
1184 | goto skip_fsfstatus; | |
1185 | } | |
1186 | ||
059c97d0 AH |
1187 | unit = (struct zfcp_unit *) new_fsf_req->data; |
1188 | ||
1da177e4 LT |
1189 | /* evaluate FSF status in QTCB */ |
1190 | switch (new_fsf_req->qtcb->header.fsf_status) { | |
1191 | ||
1192 | case FSF_PORT_HANDLE_NOT_VALID: | |
1193 | if (status_qual >> 4 != status_qual % 0xf) { | |
1da177e4 LT |
1194 | debug_text_event(new_fsf_req->adapter->erp_dbf, 3, |
1195 | "fsf_s_phand_nv0"); | |
1196 | /* | |
1197 | * In this case a command that was sent prior to a port | |
1198 | * reopen was aborted (handles are different). This is | |
1199 | * fine. | |
1200 | */ | |
1201 | } else { | |
1da177e4 LT |
1202 | ZFCP_LOG_INFO("Temporary port identifier 0x%x for " |
1203 | "port 0x%016Lx on adapter %s invalid. " | |
1204 | "This may happen occasionally.\n", | |
1205 | unit->port->handle, | |
1206 | unit->port->wwpn, | |
1207 | zfcp_get_busid_by_unit(unit)); | |
1208 | ZFCP_LOG_INFO("status qualifier:\n"); | |
1209 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO, | |
1210 | (char *) &new_fsf_req->qtcb->header. | |
1211 | fsf_status_qual, | |
1212 | sizeof (union fsf_status_qual)); | |
1213 | /* Let's hope this sorts out the mess */ | |
1214 | debug_text_event(new_fsf_req->adapter->erp_dbf, 1, | |
1215 | "fsf_s_phand_nv1"); | |
1216 | zfcp_erp_adapter_reopen(unit->port->adapter, 0); | |
1217 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1218 | } | |
1219 | break; | |
1220 | ||
1221 | case FSF_LUN_HANDLE_NOT_VALID: | |
1222 | if (status_qual >> 4 != status_qual % 0xf) { | |
1223 | /* 2 */ | |
1da177e4 LT |
1224 | debug_text_event(new_fsf_req->adapter->erp_dbf, 3, |
1225 | "fsf_s_lhand_nv0"); | |
1226 | /* | |
1227 | * In this case a command that was sent prior to a unit | |
1228 | * reopen was aborted (handles are different). | |
1229 | * This is fine. | |
1230 | */ | |
1231 | } else { | |
1da177e4 LT |
1232 | ZFCP_LOG_INFO |
1233 | ("Warning: Temporary LUN identifier 0x%x of LUN " | |
1234 | "0x%016Lx on port 0x%016Lx on adapter %s is " | |
1235 | "invalid. This may happen in rare cases. " | |
1236 | "Trying to re-establish link.\n", | |
1237 | unit->handle, | |
1238 | unit->fcp_lun, | |
1239 | unit->port->wwpn, | |
1240 | zfcp_get_busid_by_unit(unit)); | |
1241 | ZFCP_LOG_DEBUG("Status qualifier data:\n"); | |
1242 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
1243 | (char *) &new_fsf_req->qtcb->header. | |
1244 | fsf_status_qual, | |
1245 | sizeof (union fsf_status_qual)); | |
1246 | /* Let's hope this sorts out the mess */ | |
1247 | debug_text_event(new_fsf_req->adapter->erp_dbf, 1, | |
1248 | "fsf_s_lhand_nv1"); | |
1249 | zfcp_erp_port_reopen(unit->port, 0); | |
1250 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1251 | } | |
1252 | break; | |
1253 | ||
1254 | case FSF_FCP_COMMAND_DOES_NOT_EXIST: | |
1da177e4 LT |
1255 | retval = 0; |
1256 | debug_text_event(new_fsf_req->adapter->erp_dbf, 3, | |
1257 | "fsf_s_no_exist"); | |
1258 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED; | |
1259 | break; | |
1260 | ||
1261 | case FSF_PORT_BOXED: | |
1da177e4 LT |
1262 | ZFCP_LOG_INFO("Remote port 0x%016Lx on adapter %s needs to " |
1263 | "be reopened\n", unit->port->wwpn, | |
1264 | zfcp_get_busid_by_unit(unit)); | |
1265 | debug_text_event(new_fsf_req->adapter->erp_dbf, 2, | |
1266 | "fsf_s_pboxed"); | |
d736a27b | 1267 | zfcp_erp_port_boxed(unit->port); |
1da177e4 LT |
1268 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
1269 | | ZFCP_STATUS_FSFREQ_RETRY; | |
1270 | break; | |
1271 | ||
1272 | case FSF_LUN_BOXED: | |
1da177e4 LT |
1273 | ZFCP_LOG_INFO( |
1274 | "unit 0x%016Lx on port 0x%016Lx on adapter %s needs " | |
1275 | "to be reopened\n", | |
1276 | unit->fcp_lun, unit->port->wwpn, | |
1277 | zfcp_get_busid_by_unit(unit)); | |
1278 | debug_text_event(new_fsf_req->adapter->erp_dbf, 1, "fsf_s_lboxed"); | |
d736a27b | 1279 | zfcp_erp_unit_boxed(unit); |
1da177e4 LT |
1280 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
1281 | | ZFCP_STATUS_FSFREQ_RETRY; | |
1282 | break; | |
1283 | ||
1284 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
1285 | switch (new_fsf_req->qtcb->header.fsf_status_qual.word[0]) { |
1286 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
1287 | debug_text_event(new_fsf_req->adapter->erp_dbf, 1, |
1288 | "fsf_sq_ltest"); | |
65a8d4e1 | 1289 | zfcp_test_link(unit->port); |
1da177e4 LT |
1290 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1291 | break; | |
1292 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
1293 | /* SCSI stack will escalate */ |
1294 | debug_text_event(new_fsf_req->adapter->erp_dbf, 1, | |
1295 | "fsf_sq_ulp"); | |
1296 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1297 | break; | |
1298 | default: | |
1299 | ZFCP_LOG_NORMAL | |
1300 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
1301 | new_fsf_req->qtcb->header.fsf_status_qual.word[0]); | |
1302 | debug_text_event(new_fsf_req->adapter->erp_dbf, 0, | |
1303 | "fsf_sq_inval:"); | |
1304 | debug_exception(new_fsf_req->adapter->erp_dbf, 0, | |
1305 | &new_fsf_req->qtcb->header. | |
1306 | fsf_status_qual.word[0], sizeof (u32)); | |
1307 | break; | |
1308 | } | |
1309 | break; | |
1310 | ||
1311 | case FSF_GOOD: | |
1da177e4 LT |
1312 | retval = 0; |
1313 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED; | |
1314 | break; | |
1315 | ||
1316 | default: | |
1317 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
1318 | "(debug info 0x%x)\n", | |
1319 | new_fsf_req->qtcb->header.fsf_status); | |
1320 | debug_text_event(new_fsf_req->adapter->erp_dbf, 0, | |
1321 | "fsf_s_inval:"); | |
1322 | debug_exception(new_fsf_req->adapter->erp_dbf, 0, | |
1323 | &new_fsf_req->qtcb->header.fsf_status, | |
1324 | sizeof (u32)); | |
1325 | break; | |
1326 | } | |
1327 | skip_fsfstatus: | |
1328 | return retval; | |
1329 | } | |
1330 | ||
1331 | /** | |
1332 | * zfcp_use_one_sbal - checks whether req buffer and resp bother each fit into | |
1333 | * one SBALE | |
1334 | * Two scatter-gather lists are passed, one for the reqeust and one for the | |
1335 | * response. | |
1336 | */ | |
1337 | static inline int | |
1338 | zfcp_use_one_sbal(struct scatterlist *req, int req_count, | |
1339 | struct scatterlist *resp, int resp_count) | |
1340 | { | |
1341 | return ((req_count == 1) && | |
1342 | (resp_count == 1) && | |
1343 | (((unsigned long) zfcp_sg_to_address(&req[0]) & | |
1344 | PAGE_MASK) == | |
1345 | ((unsigned long) (zfcp_sg_to_address(&req[0]) + | |
1346 | req[0].length - 1) & PAGE_MASK)) && | |
1347 | (((unsigned long) zfcp_sg_to_address(&resp[0]) & | |
1348 | PAGE_MASK) == | |
1349 | ((unsigned long) (zfcp_sg_to_address(&resp[0]) + | |
1350 | resp[0].length - 1) & PAGE_MASK))); | |
1351 | } | |
1352 | ||
1353 | /** | |
1354 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) | |
1355 | * @ct: pointer to struct zfcp_send_ct which conatins all needed data for | |
1356 | * the request | |
1357 | * @pool: pointer to memory pool, if non-null this pool is used to allocate | |
1358 | * a struct zfcp_fsf_req | |
1359 | * @erp_action: pointer to erp_action, if non-null the Generic Service request | |
1360 | * is sent within error recovery | |
1361 | */ | |
1362 | int | |
1363 | zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, | |
1364 | struct zfcp_erp_action *erp_action) | |
1365 | { | |
1366 | volatile struct qdio_buffer_element *sbale; | |
1367 | struct zfcp_port *port; | |
1368 | struct zfcp_adapter *adapter; | |
1369 | struct zfcp_fsf_req *fsf_req; | |
1370 | unsigned long lock_flags; | |
1371 | int bytes; | |
1372 | int ret = 0; | |
1373 | ||
1374 | port = ct->port; | |
1375 | adapter = port->adapter; | |
1376 | ||
1377 | ret = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC, | |
1378 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
1379 | pool, &lock_flags, &fsf_req); | |
1380 | if (ret < 0) { | |
1381 | ZFCP_LOG_INFO("error: Could not create CT request (FC-GS) for " | |
1382 | "adapter: %s\n", | |
1383 | zfcp_get_busid_by_adapter(adapter)); | |
1384 | goto failed_req; | |
1385 | } | |
1386 | ||
1da177e4 LT |
1387 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1388 | if (zfcp_use_one_sbal(ct->req, ct->req_count, | |
1389 | ct->resp, ct->resp_count)){ | |
1390 | /* both request buffer and response buffer | |
1391 | fit into one sbale each */ | |
1392 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ; | |
1393 | sbale[2].addr = zfcp_sg_to_address(&ct->req[0]); | |
1394 | sbale[2].length = ct->req[0].length; | |
1395 | sbale[3].addr = zfcp_sg_to_address(&ct->resp[0]); | |
1396 | sbale[3].length = ct->resp[0].length; | |
1397 | sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY; | |
aef4a983 | 1398 | } else if (adapter->adapter_features & |
1da177e4 LT |
1399 | FSF_FEATURE_ELS_CT_CHAINED_SBALS) { |
1400 | /* try to use chained SBALs */ | |
1401 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, | |
1402 | SBAL_FLAGS0_TYPE_WRITE_READ, | |
1403 | ct->req, ct->req_count, | |
1404 | ZFCP_MAX_SBALS_PER_CT_REQ); | |
1405 | if (bytes <= 0) { | |
1406 | ZFCP_LOG_INFO("error: creation of CT request failed " | |
1407 | "on adapter %s\n", | |
1408 | zfcp_get_busid_by_adapter(adapter)); | |
1409 | if (bytes == 0) | |
1410 | ret = -ENOMEM; | |
1411 | else | |
1412 | ret = bytes; | |
1413 | ||
1414 | goto failed_send; | |
1415 | } | |
1416 | fsf_req->qtcb->bottom.support.req_buf_length = bytes; | |
1417 | fsf_req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; | |
1418 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, | |
1419 | SBAL_FLAGS0_TYPE_WRITE_READ, | |
1420 | ct->resp, ct->resp_count, | |
1421 | ZFCP_MAX_SBALS_PER_CT_REQ); | |
1422 | if (bytes <= 0) { | |
1423 | ZFCP_LOG_INFO("error: creation of CT request failed " | |
1424 | "on adapter %s\n", | |
1425 | zfcp_get_busid_by_adapter(adapter)); | |
1426 | if (bytes == 0) | |
1427 | ret = -ENOMEM; | |
1428 | else | |
1429 | ret = bytes; | |
1430 | ||
1431 | goto failed_send; | |
1432 | } | |
1433 | fsf_req->qtcb->bottom.support.resp_buf_length = bytes; | |
1434 | } else { | |
1435 | /* reject send generic request */ | |
1436 | ZFCP_LOG_INFO( | |
1437 | "error: microcode does not support chained SBALs," | |
1438 | "CT request too big (adapter %s)\n", | |
1439 | zfcp_get_busid_by_adapter(adapter)); | |
1440 | ret = -EOPNOTSUPP; | |
1441 | goto failed_send; | |
1442 | } | |
1443 | ||
1444 | /* settings in QTCB */ | |
1445 | fsf_req->qtcb->header.port_handle = port->handle; | |
06506d00 AH |
1446 | fsf_req->qtcb->bottom.support.service_class = |
1447 | ZFCP_FC_SERVICE_CLASS_DEFAULT; | |
1da177e4 | 1448 | fsf_req->qtcb->bottom.support.timeout = ct->timeout; |
059c97d0 | 1449 | fsf_req->data = (unsigned long) ct; |
1da177e4 | 1450 | |
8a36e453 MS |
1451 | zfcp_san_dbf_event_ct_request(fsf_req); |
1452 | ||
2abbe866 AH |
1453 | if (erp_action) { |
1454 | erp_action->fsf_req = fsf_req; | |
1455 | fsf_req->erp_action = erp_action; | |
1456 | zfcp_erp_start_timer(fsf_req); | |
1457 | } else | |
1458 | zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1459 | ||
1460 | ret = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
1461 | if (ret) { |
1462 | ZFCP_LOG_DEBUG("error: initiation of CT request failed " | |
1463 | "(adapter %s, port 0x%016Lx)\n", | |
1464 | zfcp_get_busid_by_adapter(adapter), port->wwpn); | |
1465 | goto failed_send; | |
1466 | } | |
1467 | ||
1468 | ZFCP_LOG_DEBUG("CT request initiated (adapter %s, port 0x%016Lx)\n", | |
1469 | zfcp_get_busid_by_adapter(adapter), port->wwpn); | |
1470 | goto out; | |
1471 | ||
1472 | failed_send: | |
1473 | zfcp_fsf_req_free(fsf_req); | |
1474 | if (erp_action != NULL) { | |
1475 | erp_action->fsf_req = NULL; | |
1476 | } | |
1477 | failed_req: | |
1478 | out: | |
1479 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, | |
1480 | lock_flags); | |
1481 | return ret; | |
1482 | } | |
1483 | ||
1484 | /** | |
1485 | * zfcp_fsf_send_ct_handler - handler for Generic Service requests | |
1486 | * @fsf_req: pointer to struct zfcp_fsf_req | |
1487 | * | |
059c97d0 AH |
1488 | * Data specific for the Generic Service request is passed using |
1489 | * fsf_req->data. There we find the pointer to struct zfcp_send_ct. | |
1490 | * Usually a specific handler for the CT request is called which is | |
1491 | * found in this structure. | |
1da177e4 LT |
1492 | */ |
1493 | static int | |
1494 | zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *fsf_req) | |
1495 | { | |
1496 | struct zfcp_port *port; | |
1497 | struct zfcp_adapter *adapter; | |
1498 | struct zfcp_send_ct *send_ct; | |
1499 | struct fsf_qtcb_header *header; | |
1500 | struct fsf_qtcb_bottom_support *bottom; | |
1501 | int retval = -EINVAL; | |
1502 | u16 subtable, rule, counter; | |
1503 | ||
1504 | adapter = fsf_req->adapter; | |
059c97d0 | 1505 | send_ct = (struct zfcp_send_ct *) fsf_req->data; |
1da177e4 LT |
1506 | port = send_ct->port; |
1507 | header = &fsf_req->qtcb->header; | |
1508 | bottom = &fsf_req->qtcb->bottom.support; | |
1509 | ||
1510 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
1511 | goto skip_fsfstatus; | |
1512 | ||
1513 | /* evaluate FSF status in QTCB */ | |
1514 | switch (header->fsf_status) { | |
1515 | ||
1516 | case FSF_GOOD: | |
8a36e453 | 1517 | zfcp_san_dbf_event_ct_response(fsf_req); |
1da177e4 LT |
1518 | retval = 0; |
1519 | break; | |
1520 | ||
1521 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: | |
06506d00 AH |
1522 | ZFCP_LOG_INFO("error: adapter %s does not support fc " |
1523 | "class %d.\n", | |
1524 | zfcp_get_busid_by_port(port), | |
1525 | ZFCP_FC_SERVICE_CLASS_DEFAULT); | |
1da177e4 LT |
1526 | /* stop operation for this adapter */ |
1527 | debug_text_exception(adapter->erp_dbf, 0, "fsf_s_class_nsup"); | |
1528 | zfcp_erp_adapter_shutdown(adapter, 0); | |
1529 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1530 | break; | |
1531 | ||
1532 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
1533 | switch (header->fsf_status_qual.word[0]){ |
1534 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
1535 | /* reopening link to port */ |
1536 | debug_text_event(adapter->erp_dbf, 1, "fsf_sq_ltest"); | |
1537 | zfcp_test_link(port); | |
1538 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1539 | break; | |
1540 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
1541 | /* ERP strategy will escalate */ |
1542 | debug_text_event(adapter->erp_dbf, 1, "fsf_sq_ulp"); | |
1543 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1544 | break; | |
1545 | default: | |
1546 | ZFCP_LOG_INFO("bug: Wrong status qualifier 0x%x " | |
1547 | "arrived.\n", | |
1548 | header->fsf_status_qual.word[0]); | |
1549 | break; | |
1550 | } | |
1551 | break; | |
1552 | ||
1553 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
1554 | ZFCP_LOG_NORMAL("access denied, cannot send generic service " |
1555 | "command (adapter %s, port d_id=0x%08x)\n", | |
1556 | zfcp_get_busid_by_port(port), port->d_id); | |
1557 | for (counter = 0; counter < 2; counter++) { | |
1558 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
1559 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
1560 | switch (subtable) { | |
1561 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
1562 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
1563 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
1564 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
1565 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
1566 | zfcp_act_subtable_type[subtable], rule); | |
1567 | break; | |
1568 | } | |
1569 | } | |
1570 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_access"); | |
1571 | zfcp_erp_port_access_denied(port); | |
1572 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1573 | break; | |
1574 | ||
1575 | case FSF_GENERIC_COMMAND_REJECTED: | |
1da177e4 LT |
1576 | ZFCP_LOG_INFO("generic service command rejected " |
1577 | "(adapter %s, port d_id=0x%08x)\n", | |
1578 | zfcp_get_busid_by_port(port), port->d_id); | |
1579 | ZFCP_LOG_INFO("status qualifier:\n"); | |
1580 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO, | |
1581 | (char *) &header->fsf_status_qual, | |
1582 | sizeof (union fsf_status_qual)); | |
1583 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_gcom_rej"); | |
1584 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1585 | break; | |
1586 | ||
1587 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
1588 | ZFCP_LOG_DEBUG("Temporary port identifier 0x%x for port " |
1589 | "0x%016Lx on adapter %s invalid. This may " | |
1590 | "happen occasionally.\n", port->handle, | |
1591 | port->wwpn, zfcp_get_busid_by_port(port)); | |
1592 | ZFCP_LOG_INFO("status qualifier:\n"); | |
1593 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO, | |
1594 | (char *) &header->fsf_status_qual, | |
1595 | sizeof (union fsf_status_qual)); | |
1596 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_phandle_nv"); | |
1597 | zfcp_erp_adapter_reopen(adapter, 0); | |
1598 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1599 | break; | |
1600 | ||
1601 | case FSF_PORT_BOXED: | |
1da177e4 LT |
1602 | ZFCP_LOG_INFO("port needs to be reopened " |
1603 | "(adapter %s, port d_id=0x%08x)\n", | |
1604 | zfcp_get_busid_by_port(port), port->d_id); | |
1605 | debug_text_event(adapter->erp_dbf, 2, "fsf_s_pboxed"); | |
d736a27b | 1606 | zfcp_erp_port_boxed(port); |
1da177e4 LT |
1607 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
1608 | | ZFCP_STATUS_FSFREQ_RETRY; | |
1609 | break; | |
1610 | ||
1611 | /* following states should never occure, all cases avoided | |
1612 | in zfcp_fsf_send_ct - but who knows ... */ | |
1613 | case FSF_PAYLOAD_SIZE_MISMATCH: | |
1da177e4 LT |
1614 | ZFCP_LOG_INFO("payload size mismatch (adapter: %s, " |
1615 | "req_buf_length=%d, resp_buf_length=%d)\n", | |
1616 | zfcp_get_busid_by_adapter(adapter), | |
1617 | bottom->req_buf_length, bottom->resp_buf_length); | |
1618 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1619 | break; | |
1620 | case FSF_REQUEST_SIZE_TOO_LARGE: | |
1da177e4 LT |
1621 | ZFCP_LOG_INFO("request size too large (adapter: %s, " |
1622 | "req_buf_length=%d)\n", | |
1623 | zfcp_get_busid_by_adapter(adapter), | |
1624 | bottom->req_buf_length); | |
1625 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1626 | break; | |
1627 | case FSF_RESPONSE_SIZE_TOO_LARGE: | |
1da177e4 LT |
1628 | ZFCP_LOG_INFO("response size too large (adapter: %s, " |
1629 | "resp_buf_length=%d)\n", | |
1630 | zfcp_get_busid_by_adapter(adapter), | |
1631 | bottom->resp_buf_length); | |
1632 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1633 | break; | |
1634 | case FSF_SBAL_MISMATCH: | |
1da177e4 LT |
1635 | ZFCP_LOG_INFO("SBAL mismatch (adapter: %s, req_buf_length=%d, " |
1636 | "resp_buf_length=%d)\n", | |
1637 | zfcp_get_busid_by_adapter(adapter), | |
1638 | bottom->req_buf_length, bottom->resp_buf_length); | |
1639 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1640 | break; | |
1641 | ||
1642 | default: | |
1643 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
1644 | "(debug info 0x%x)\n", header->fsf_status); | |
1645 | debug_text_event(adapter->erp_dbf, 0, "fsf_sq_inval:"); | |
1646 | debug_exception(adapter->erp_dbf, 0, | |
1647 | &header->fsf_status_qual.word[0], sizeof (u32)); | |
1648 | break; | |
1649 | } | |
1650 | ||
1651 | skip_fsfstatus: | |
1652 | send_ct->status = retval; | |
1653 | ||
1654 | if (send_ct->handler != NULL) | |
1655 | send_ct->handler(send_ct->handler_data); | |
1656 | ||
1657 | return retval; | |
1658 | } | |
1659 | ||
1660 | /** | |
1661 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) | |
1662 | * @els: pointer to struct zfcp_send_els which contains all needed data for | |
1663 | * the command. | |
1664 | */ | |
1665 | int | |
1666 | zfcp_fsf_send_els(struct zfcp_send_els *els) | |
1667 | { | |
1668 | volatile struct qdio_buffer_element *sbale; | |
1669 | struct zfcp_fsf_req *fsf_req; | |
13e1e1f0 | 1670 | u32 d_id; |
1da177e4 LT |
1671 | struct zfcp_adapter *adapter; |
1672 | unsigned long lock_flags; | |
1673 | int bytes; | |
1674 | int ret = 0; | |
1675 | ||
1676 | d_id = els->d_id; | |
1677 | adapter = els->adapter; | |
1678 | ||
1679 | ret = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS, | |
1680 | ZFCP_REQ_AUTO_CLEANUP, | |
1681 | NULL, &lock_flags, &fsf_req); | |
1682 | if (ret < 0) { | |
1683 | ZFCP_LOG_INFO("error: creation of ELS request failed " | |
1684 | "(adapter %s, port d_id: 0x%08x)\n", | |
1685 | zfcp_get_busid_by_adapter(adapter), d_id); | |
1686 | goto failed_req; | |
1687 | } | |
1688 | ||
1689 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
1690 | if (zfcp_use_one_sbal(els->req, els->req_count, | |
1691 | els->resp, els->resp_count)){ | |
1692 | /* both request buffer and response buffer | |
1693 | fit into one sbale each */ | |
1694 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ; | |
1695 | sbale[2].addr = zfcp_sg_to_address(&els->req[0]); | |
1696 | sbale[2].length = els->req[0].length; | |
1697 | sbale[3].addr = zfcp_sg_to_address(&els->resp[0]); | |
1698 | sbale[3].length = els->resp[0].length; | |
1699 | sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY; | |
aef4a983 | 1700 | } else if (adapter->adapter_features & |
1da177e4 LT |
1701 | FSF_FEATURE_ELS_CT_CHAINED_SBALS) { |
1702 | /* try to use chained SBALs */ | |
1703 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, | |
1704 | SBAL_FLAGS0_TYPE_WRITE_READ, | |
1705 | els->req, els->req_count, | |
1706 | ZFCP_MAX_SBALS_PER_ELS_REQ); | |
1707 | if (bytes <= 0) { | |
1708 | ZFCP_LOG_INFO("error: creation of ELS request failed " | |
1709 | "(adapter %s, port d_id: 0x%08x)\n", | |
1710 | zfcp_get_busid_by_adapter(adapter), d_id); | |
1711 | if (bytes == 0) { | |
1712 | ret = -ENOMEM; | |
1713 | } else { | |
1714 | ret = bytes; | |
1715 | } | |
1716 | goto failed_send; | |
1717 | } | |
1718 | fsf_req->qtcb->bottom.support.req_buf_length = bytes; | |
1719 | fsf_req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; | |
1720 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, | |
1721 | SBAL_FLAGS0_TYPE_WRITE_READ, | |
1722 | els->resp, els->resp_count, | |
1723 | ZFCP_MAX_SBALS_PER_ELS_REQ); | |
1724 | if (bytes <= 0) { | |
1725 | ZFCP_LOG_INFO("error: creation of ELS request failed " | |
1726 | "(adapter %s, port d_id: 0x%08x)\n", | |
1727 | zfcp_get_busid_by_adapter(adapter), d_id); | |
1728 | if (bytes == 0) { | |
1729 | ret = -ENOMEM; | |
1730 | } else { | |
1731 | ret = bytes; | |
1732 | } | |
1733 | goto failed_send; | |
1734 | } | |
1735 | fsf_req->qtcb->bottom.support.resp_buf_length = bytes; | |
1736 | } else { | |
1737 | /* reject request */ | |
1738 | ZFCP_LOG_INFO("error: microcode does not support chained SBALs" | |
1739 | ", ELS request too big (adapter %s, " | |
1740 | "port d_id: 0x%08x)\n", | |
1741 | zfcp_get_busid_by_adapter(adapter), d_id); | |
1742 | ret = -EOPNOTSUPP; | |
1743 | goto failed_send; | |
1744 | } | |
1745 | ||
1746 | /* settings in QTCB */ | |
1747 | fsf_req->qtcb->bottom.support.d_id = d_id; | |
06506d00 AH |
1748 | fsf_req->qtcb->bottom.support.service_class = |
1749 | ZFCP_FC_SERVICE_CLASS_DEFAULT; | |
1da177e4 | 1750 | fsf_req->qtcb->bottom.support.timeout = ZFCP_ELS_TIMEOUT; |
059c97d0 | 1751 | fsf_req->data = (unsigned long) els; |
1da177e4 LT |
1752 | |
1753 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
1754 | ||
8a36e453 MS |
1755 | zfcp_san_dbf_event_els_request(fsf_req); |
1756 | ||
2abbe866 AH |
1757 | zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); |
1758 | ret = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
1759 | if (ret) { |
1760 | ZFCP_LOG_DEBUG("error: initiation of ELS request failed " | |
1761 | "(adapter %s, port d_id: 0x%08x)\n", | |
1762 | zfcp_get_busid_by_adapter(adapter), d_id); | |
1763 | goto failed_send; | |
1764 | } | |
1765 | ||
1766 | ZFCP_LOG_DEBUG("ELS request initiated (adapter %s, port d_id: " | |
1767 | "0x%08x)\n", zfcp_get_busid_by_adapter(adapter), d_id); | |
1768 | goto out; | |
1769 | ||
1770 | failed_send: | |
1771 | zfcp_fsf_req_free(fsf_req); | |
1772 | ||
1773 | failed_req: | |
1774 | out: | |
1775 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, | |
1776 | lock_flags); | |
1777 | ||
1778 | return ret; | |
1779 | } | |
1780 | ||
1781 | /** | |
1782 | * zfcp_fsf_send_els_handler - handler for ELS commands | |
1783 | * @fsf_req: pointer to struct zfcp_fsf_req | |
1784 | * | |
059c97d0 AH |
1785 | * Data specific for the ELS command is passed using |
1786 | * fsf_req->data. There we find the pointer to struct zfcp_send_els. | |
1787 | * Usually a specific handler for the ELS command is called which is | |
1788 | * found in this structure. | |
1da177e4 LT |
1789 | */ |
1790 | static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *fsf_req) | |
1791 | { | |
1792 | struct zfcp_adapter *adapter; | |
1da177e4 | 1793 | struct zfcp_port *port; |
13e1e1f0 | 1794 | u32 d_id; |
1da177e4 LT |
1795 | struct fsf_qtcb_header *header; |
1796 | struct fsf_qtcb_bottom_support *bottom; | |
1797 | struct zfcp_send_els *send_els; | |
1798 | int retval = -EINVAL; | |
1799 | u16 subtable, rule, counter; | |
1800 | ||
059c97d0 | 1801 | send_els = (struct zfcp_send_els *) fsf_req->data; |
1da177e4 | 1802 | adapter = send_els->adapter; |
64b29a13 | 1803 | port = send_els->port; |
1da177e4 LT |
1804 | d_id = send_els->d_id; |
1805 | header = &fsf_req->qtcb->header; | |
1806 | bottom = &fsf_req->qtcb->bottom.support; | |
1807 | ||
1808 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
1809 | goto skip_fsfstatus; | |
1810 | ||
1811 | switch (header->fsf_status) { | |
1812 | ||
1813 | case FSF_GOOD: | |
8a36e453 | 1814 | zfcp_san_dbf_event_els_response(fsf_req); |
1da177e4 LT |
1815 | retval = 0; |
1816 | break; | |
1817 | ||
1818 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: | |
06506d00 AH |
1819 | ZFCP_LOG_INFO("error: adapter %s does not support fc " |
1820 | "class %d.\n", | |
1821 | zfcp_get_busid_by_adapter(adapter), | |
1822 | ZFCP_FC_SERVICE_CLASS_DEFAULT); | |
1da177e4 LT |
1823 | /* stop operation for this adapter */ |
1824 | debug_text_exception(adapter->erp_dbf, 0, "fsf_s_class_nsup"); | |
1825 | zfcp_erp_adapter_shutdown(adapter, 0); | |
1826 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1827 | break; | |
1828 | ||
1829 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
1830 | switch (header->fsf_status_qual.word[0]){ |
1831 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1832 | debug_text_event(adapter->erp_dbf, 1, "fsf_sq_ltest"); |
64b29a13 AH |
1833 | if (port && (send_els->ls_code != ZFCP_LS_ADISC)) |
1834 | zfcp_test_link(port); | |
1da177e4 LT |
1835 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1836 | break; | |
1837 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
1838 | debug_text_event(adapter->erp_dbf, 1, "fsf_sq_ulp"); |
1839 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1840 | retval = | |
1841 | zfcp_handle_els_rjt(header->fsf_status_qual.word[1], | |
1842 | (struct zfcp_ls_rjt_par *) | |
1843 | &header->fsf_status_qual.word[2]); | |
1844 | break; | |
1845 | case FSF_SQ_RETRY_IF_POSSIBLE: | |
1da177e4 LT |
1846 | debug_text_event(adapter->erp_dbf, 1, "fsf_sq_retry"); |
1847 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1848 | break; | |
1849 | default: | |
1850 | ZFCP_LOG_INFO("bug: Wrong status qualifier 0x%x\n", | |
1851 | header->fsf_status_qual.word[0]); | |
1852 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO, | |
1853 | (char*)header->fsf_status_qual.word, 16); | |
1854 | } | |
1855 | break; | |
1856 | ||
1857 | case FSF_ELS_COMMAND_REJECTED: | |
1da177e4 LT |
1858 | ZFCP_LOG_INFO("ELS has been rejected because command filter " |
1859 | "prohibited sending " | |
1860 | "(adapter: %s, port d_id: 0x%08x)\n", | |
1861 | zfcp_get_busid_by_adapter(adapter), d_id); | |
1862 | ||
1863 | break; | |
1864 | ||
1865 | case FSF_PAYLOAD_SIZE_MISMATCH: | |
1da177e4 LT |
1866 | ZFCP_LOG_INFO( |
1867 | "ELS request size and ELS response size must be either " | |
1868 | "both 0, or both greater than 0 " | |
1869 | "(adapter: %s, req_buf_length=%d resp_buf_length=%d)\n", | |
1870 | zfcp_get_busid_by_adapter(adapter), | |
1871 | bottom->req_buf_length, | |
1872 | bottom->resp_buf_length); | |
1873 | break; | |
1874 | ||
1875 | case FSF_REQUEST_SIZE_TOO_LARGE: | |
1da177e4 LT |
1876 | ZFCP_LOG_INFO( |
1877 | "Length of the ELS request buffer, " | |
1878 | "specified in QTCB bottom, " | |
1879 | "exceeds the size of the buffers " | |
1880 | "that have been allocated for ELS request data " | |
1881 | "(adapter: %s, req_buf_length=%d)\n", | |
1882 | zfcp_get_busid_by_adapter(adapter), | |
1883 | bottom->req_buf_length); | |
1884 | break; | |
1885 | ||
1886 | case FSF_RESPONSE_SIZE_TOO_LARGE: | |
1da177e4 LT |
1887 | ZFCP_LOG_INFO( |
1888 | "Length of the ELS response buffer, " | |
1889 | "specified in QTCB bottom, " | |
1890 | "exceeds the size of the buffers " | |
1891 | "that have been allocated for ELS response data " | |
1892 | "(adapter: %s, resp_buf_length=%d)\n", | |
1893 | zfcp_get_busid_by_adapter(adapter), | |
1894 | bottom->resp_buf_length); | |
1895 | break; | |
1896 | ||
1897 | case FSF_SBAL_MISMATCH: | |
1898 | /* should never occure, avoided in zfcp_fsf_send_els */ | |
1da177e4 LT |
1899 | ZFCP_LOG_INFO("SBAL mismatch (adapter: %s, req_buf_length=%d, " |
1900 | "resp_buf_length=%d)\n", | |
1901 | zfcp_get_busid_by_adapter(adapter), | |
1902 | bottom->req_buf_length, bottom->resp_buf_length); | |
1903 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1904 | break; | |
1905 | ||
1906 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
1907 | ZFCP_LOG_NORMAL("access denied, cannot send ELS command " |
1908 | "(adapter %s, port d_id=0x%08x)\n", | |
1909 | zfcp_get_busid_by_adapter(adapter), d_id); | |
1910 | for (counter = 0; counter < 2; counter++) { | |
1911 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
1912 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
1913 | switch (subtable) { | |
1914 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
1915 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
1916 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
1917 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
1918 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
1919 | zfcp_act_subtable_type[subtable], rule); | |
1920 | break; | |
1921 | } | |
1922 | } | |
1923 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_access"); | |
1da177e4 LT |
1924 | if (port != NULL) |
1925 | zfcp_erp_port_access_denied(port); | |
1da177e4 LT |
1926 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1927 | break; | |
1928 | ||
1929 | default: | |
1930 | ZFCP_LOG_NORMAL( | |
1931 | "bug: An unknown FSF Status was presented " | |
1932 | "(adapter: %s, fsf_status=0x%08x)\n", | |
1933 | zfcp_get_busid_by_adapter(adapter), | |
1934 | header->fsf_status); | |
1935 | debug_text_event(adapter->erp_dbf, 0, "fsf_sq_inval"); | |
1936 | debug_exception(adapter->erp_dbf, 0, | |
1937 | &header->fsf_status_qual.word[0], sizeof(u32)); | |
1938 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1939 | break; | |
1940 | } | |
1941 | ||
1942 | skip_fsfstatus: | |
1943 | send_els->status = retval; | |
1944 | ||
1945 | if (send_els->handler != 0) | |
1946 | send_els->handler(send_els->handler_data); | |
1947 | ||
1948 | return retval; | |
1949 | } | |
1950 | ||
1da177e4 LT |
1951 | int |
1952 | zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) | |
1953 | { | |
1954 | volatile struct qdio_buffer_element *sbale; | |
2abbe866 | 1955 | struct zfcp_fsf_req *fsf_req; |
1da177e4 LT |
1956 | unsigned long lock_flags; |
1957 | int retval = 0; | |
1958 | ||
1959 | /* setup new FSF request */ | |
1960 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
1961 | FSF_QTCB_EXCHANGE_CONFIG_DATA, | |
1962 | ZFCP_REQ_AUTO_CLEANUP, | |
1963 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 1964 | &lock_flags, &fsf_req); |
1da177e4 LT |
1965 | if (retval < 0) { |
1966 | ZFCP_LOG_INFO("error: Could not create exchange configuration " | |
1967 | "data request for adapter %s.\n", | |
1968 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
1969 | goto out; | |
1970 | } | |
1971 | ||
2abbe866 | 1972 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
1973 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1974 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1975 | ||
2abbe866 | 1976 | fsf_req->qtcb->bottom.config.feature_selection = |
aef4a983 MS |
1977 | FSF_FEATURE_CFDC | |
1978 | FSF_FEATURE_LUN_SHARING | | |
9eb69aff | 1979 | FSF_FEATURE_NOTIFICATION_LOST | |
aef4a983 | 1980 | FSF_FEATURE_UPDATE_ALERT; |
2abbe866 AH |
1981 | fsf_req->erp_action = erp_action; |
1982 | erp_action->fsf_req = fsf_req; | |
1da177e4 | 1983 | |
2abbe866 AH |
1984 | zfcp_erp_start_timer(fsf_req); |
1985 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
1986 | if (retval) { |
1987 | ZFCP_LOG_INFO | |
1988 | ("error: Could not send exchange configuration data " | |
1989 | "command on the adapter %s\n", | |
1990 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2abbe866 | 1991 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
1992 | erp_action->fsf_req = NULL; |
1993 | goto out; | |
1994 | } | |
1995 | ||
1996 | ZFCP_LOG_DEBUG("exchange configuration data request initiated " | |
1997 | "(adapter %s)\n", | |
1998 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
1999 | ||
2000 | out: | |
2001 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
2002 | lock_flags); | |
2003 | return retval; | |
2004 | } | |
2005 | ||
2006 | /** | |
2007 | * zfcp_fsf_exchange_config_evaluate | |
2008 | * @fsf_req: fsf_req which belongs to xchg config data request | |
2009 | * @xchg_ok: specifies if xchg config data was incomplete or complete (0/1) | |
2010 | * | |
2011 | * returns: -EIO on error, 0 otherwise | |
2012 | */ | |
2013 | static int | |
2014 | zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *fsf_req, int xchg_ok) | |
2015 | { | |
2016 | struct fsf_qtcb_bottom_config *bottom; | |
2017 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
13e1e1f0 | 2018 | struct Scsi_Host *shost = adapter->scsi_host; |
1da177e4 LT |
2019 | |
2020 | bottom = &fsf_req->qtcb->bottom.config; | |
2021 | ZFCP_LOG_DEBUG("low/high QTCB version 0x%x/0x%x of FSF\n", | |
2022 | bottom->low_qtcb_version, bottom->high_qtcb_version); | |
2023 | adapter->fsf_lic_version = bottom->lic_version; | |
aef4a983 MS |
2024 | adapter->adapter_features = bottom->adapter_features; |
2025 | adapter->connection_features = bottom->connection_features; | |
6f71d9bc | 2026 | adapter->peer_wwpn = 0; |
2027 | adapter->peer_wwnn = 0; | |
2028 | adapter->peer_d_id = 0; | |
1da177e4 LT |
2029 | |
2030 | if (xchg_ok) { | |
13e1e1f0 AH |
2031 | fc_host_node_name(shost) = bottom->nport_serv_param.wwnn; |
2032 | fc_host_port_name(shost) = bottom->nport_serv_param.wwpn; | |
2033 | fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK; | |
2034 | fc_host_speed(shost) = bottom->fc_link_speed; | |
2035 | fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3; | |
1da177e4 | 2036 | adapter->hydra_version = bottom->adapter_type; |
ad757cdf AH |
2037 | if (fc_host_permanent_port_name(shost) == -1) |
2038 | fc_host_permanent_port_name(shost) = | |
2039 | fc_host_port_name(shost); | |
2040 | if (bottom->fc_topology == FSF_TOPO_P2P) { | |
2041 | adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK; | |
2042 | adapter->peer_wwpn = bottom->plogi_payload.wwpn; | |
2043 | adapter->peer_wwnn = bottom->plogi_payload.wwnn; | |
2044 | fc_host_port_type(shost) = FC_PORTTYPE_PTP; | |
2045 | } else if (bottom->fc_topology == FSF_TOPO_FABRIC) | |
2046 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
2047 | else if (bottom->fc_topology == FSF_TOPO_AL) | |
2048 | fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; | |
2049 | else | |
2050 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; | |
1da177e4 | 2051 | } else { |
13e1e1f0 AH |
2052 | fc_host_node_name(shost) = 0; |
2053 | fc_host_port_name(shost) = 0; | |
2054 | fc_host_port_id(shost) = 0; | |
2055 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; | |
ad757cdf | 2056 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; |
1da177e4 LT |
2057 | adapter->hydra_version = 0; |
2058 | } | |
2059 | ||
aef4a983 | 2060 | if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) { |
1da177e4 | 2061 | adapter->hardware_version = bottom->hardware_version; |
13e1e1f0 AH |
2062 | memcpy(fc_host_serial_number(shost), bottom->serial_number, |
2063 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
2064 | EBCASC(fc_host_serial_number(shost), | |
2065 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
1da177e4 LT |
2066 | } |
2067 | ||
6f71d9bc | 2068 | ZFCP_LOG_NORMAL("The adapter %s reported the following characteristics:\n" |
13e1e1f0 AH |
2069 | "WWNN 0x%016Lx, " |
2070 | "WWPN 0x%016Lx, " | |
2071 | "S_ID 0x%08x,\n" | |
2072 | "adapter version 0x%x, " | |
2073 | "LIC version 0x%x, " | |
2074 | "FC link speed %d Gb/s\n", | |
2075 | zfcp_get_busid_by_adapter(adapter), | |
2076 | (wwn_t) fc_host_node_name(shost), | |
2077 | (wwn_t) fc_host_port_name(shost), | |
2078 | fc_host_port_id(shost), | |
2079 | adapter->hydra_version, | |
2080 | adapter->fsf_lic_version, | |
2081 | fc_host_speed(shost)); | |
1da177e4 LT |
2082 | if (ZFCP_QTCB_VERSION < bottom->low_qtcb_version) { |
2083 | ZFCP_LOG_NORMAL("error: the adapter %s " | |
2084 | "only supports newer control block " | |
2085 | "versions in comparison to this device " | |
2086 | "driver (try updated device driver)\n", | |
2087 | zfcp_get_busid_by_adapter(adapter)); | |
2088 | debug_text_event(adapter->erp_dbf, 0, "low_qtcb_ver"); | |
2089 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2090 | return -EIO; | |
2091 | } | |
2092 | if (ZFCP_QTCB_VERSION > bottom->high_qtcb_version) { | |
2093 | ZFCP_LOG_NORMAL("error: the adapter %s " | |
2094 | "only supports older control block " | |
2095 | "versions than this device driver uses" | |
2096 | "(consider a microcode upgrade)\n", | |
2097 | zfcp_get_busid_by_adapter(adapter)); | |
2098 | debug_text_event(adapter->erp_dbf, 0, "high_qtcb_ver"); | |
2099 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2100 | return -EIO; | |
2101 | } | |
2102 | return 0; | |
2103 | } | |
2104 | ||
2105 | /* | |
2106 | * function: zfcp_fsf_exchange_config_data_handler | |
2107 | * | |
2108 | * purpose: is called for finished Exchange Configuration Data command | |
2109 | * | |
2110 | * returns: | |
2111 | */ | |
2112 | static int | |
2113 | zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *fsf_req) | |
2114 | { | |
2115 | struct fsf_qtcb_bottom_config *bottom; | |
2116 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
aef4a983 | 2117 | struct fsf_qtcb *qtcb = fsf_req->qtcb; |
1da177e4 LT |
2118 | |
2119 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
2120 | return -EIO; | |
2121 | ||
aef4a983 | 2122 | switch (qtcb->header.fsf_status) { |
1da177e4 LT |
2123 | |
2124 | case FSF_GOOD: | |
1da177e4 LT |
2125 | if (zfcp_fsf_exchange_config_evaluate(fsf_req, 1)) |
2126 | return -EIO; | |
2127 | ||
ad757cdf AH |
2128 | switch (fc_host_port_type(adapter->scsi_host)) { |
2129 | case FC_PORTTYPE_PTP: | |
6f71d9bc | 2130 | ZFCP_LOG_NORMAL("Point-to-Point fibrechannel " |
2131 | "configuration detected at adapter %s\n" | |
2132 | "Peer WWNN 0x%016llx, " | |
2133 | "peer WWPN 0x%016llx, " | |
2134 | "peer d_id 0x%06x\n", | |
2135 | zfcp_get_busid_by_adapter(adapter), | |
2136 | adapter->peer_wwnn, | |
2137 | adapter->peer_wwpn, | |
2138 | adapter->peer_d_id); | |
1da177e4 LT |
2139 | debug_text_event(fsf_req->adapter->erp_dbf, 0, |
2140 | "top-p-to-p"); | |
6f71d9bc | 2141 | break; |
ad757cdf | 2142 | case FC_PORTTYPE_NLPORT: |
1da177e4 LT |
2143 | ZFCP_LOG_NORMAL("error: Arbitrated loop fibrechannel " |
2144 | "topology detected at adapter %s " | |
2145 | "unsupported, shutting down adapter\n", | |
2146 | zfcp_get_busid_by_adapter(adapter)); | |
2147 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
2148 | "top-al"); | |
2149 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2150 | return -EIO; | |
ad757cdf | 2151 | case FC_PORTTYPE_NPORT: |
aef4a983 | 2152 | ZFCP_LOG_NORMAL("Switched fabric fibrechannel " |
1da177e4 LT |
2153 | "network detected at adapter %s.\n", |
2154 | zfcp_get_busid_by_adapter(adapter)); | |
2155 | break; | |
2156 | default: | |
2157 | ZFCP_LOG_NORMAL("bug: The fibrechannel topology " | |
2158 | "reported by the exchange " | |
2159 | "configuration command for " | |
2160 | "the adapter %s is not " | |
2161 | "of a type known to the zfcp " | |
2162 | "driver, shutting down adapter\n", | |
2163 | zfcp_get_busid_by_adapter(adapter)); | |
2164 | debug_text_exception(fsf_req->adapter->erp_dbf, 0, | |
2165 | "unknown-topo"); | |
2166 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2167 | return -EIO; | |
2168 | } | |
aef4a983 | 2169 | bottom = &qtcb->bottom.config; |
1da177e4 LT |
2170 | if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { |
2171 | ZFCP_LOG_NORMAL("bug: Maximum QTCB size (%d bytes) " | |
2172 | "allowed by the adapter %s " | |
2173 | "is lower than the minimum " | |
2174 | "required by the driver (%ld bytes).\n", | |
2175 | bottom->max_qtcb_size, | |
2176 | zfcp_get_busid_by_adapter(adapter), | |
2177 | sizeof(struct fsf_qtcb)); | |
2178 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
2179 | "qtcb-size"); | |
2180 | debug_event(fsf_req->adapter->erp_dbf, 0, | |
2181 | &bottom->max_qtcb_size, sizeof (u32)); | |
2182 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2183 | return -EIO; | |
2184 | } | |
2185 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, | |
2186 | &adapter->status); | |
2187 | break; | |
2188 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: | |
2189 | debug_text_event(adapter->erp_dbf, 0, "xchg-inco"); | |
2190 | ||
2191 | if (zfcp_fsf_exchange_config_evaluate(fsf_req, 0)) | |
2192 | return -EIO; | |
2193 | ||
aef4a983 MS |
2194 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, &adapter->status); |
2195 | ||
2196 | zfcp_fsf_link_down_info_eval(adapter, | |
2197 | &qtcb->header.fsf_status_qual.link_down_info); | |
1da177e4 LT |
2198 | break; |
2199 | default: | |
2200 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf-stat-ng"); | |
2201 | debug_event(fsf_req->adapter->erp_dbf, 0, | |
2202 | &fsf_req->qtcb->header.fsf_status, sizeof (u32)); | |
2203 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2204 | return -EIO; | |
2205 | } | |
2206 | return 0; | |
2207 | } | |
2208 | ||
2209 | /** | |
2210 | * zfcp_fsf_exchange_port_data - request information about local port | |
aef4a983 | 2211 | * @erp_action: ERP action for the adapter for which port data is requested |
1da177e4 LT |
2212 | * @adapter: for which port data is requested |
2213 | * @data: response to exchange port data request | |
2214 | */ | |
2215 | int | |
aef4a983 MS |
2216 | zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action, |
2217 | struct zfcp_adapter *adapter, | |
1da177e4 LT |
2218 | struct fsf_qtcb_bottom_port *data) |
2219 | { | |
2220 | volatile struct qdio_buffer_element *sbale; | |
1da177e4 | 2221 | struct zfcp_fsf_req *fsf_req; |
2abbe866 AH |
2222 | unsigned long lock_flags; |
2223 | int retval = 0; | |
1da177e4 | 2224 | |
aef4a983 | 2225 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) { |
1da177e4 LT |
2226 | ZFCP_LOG_INFO("error: exchange port data " |
2227 | "command not supported by adapter %s\n", | |
2228 | zfcp_get_busid_by_adapter(adapter)); | |
2229 | return -EOPNOTSUPP; | |
2230 | } | |
2231 | ||
1da177e4 LT |
2232 | /* setup new FSF request */ |
2233 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, | |
2448c459 | 2234 | erp_action ? ZFCP_REQ_AUTO_CLEANUP : 0, |
d2c993d8 | 2235 | NULL, &lock_flags, &fsf_req); |
1da177e4 LT |
2236 | if (retval < 0) { |
2237 | ZFCP_LOG_INFO("error: Out of resources. Could not create an " | |
2238 | "exchange port data request for" | |
2239 | "the adapter %s.\n", | |
2240 | zfcp_get_busid_by_adapter(adapter)); | |
2241 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, | |
2242 | lock_flags); | |
2448c459 | 2243 | return retval; |
aef4a983 MS |
2244 | } |
2245 | ||
2246 | if (data) | |
2448c459 | 2247 | fsf_req->data = (unsigned long) data; |
059c97d0 | 2248 | |
1da177e4 LT |
2249 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
2250 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
2251 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2252 | ||
2448c459 AH |
2253 | if (erp_action) { |
2254 | erp_action->fsf_req = fsf_req; | |
2255 | fsf_req->erp_action = erp_action; | |
2abbe866 AH |
2256 | zfcp_erp_start_timer(fsf_req); |
2257 | } else | |
2258 | zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1da177e4 | 2259 | |
2abbe866 | 2260 | retval = zfcp_fsf_req_send(fsf_req); |
1da177e4 LT |
2261 | if (retval) { |
2262 | ZFCP_LOG_INFO("error: Could not send an exchange port data " | |
2263 | "command on the adapter %s\n", | |
2264 | zfcp_get_busid_by_adapter(adapter)); | |
2265 | zfcp_fsf_req_free(fsf_req); | |
aef4a983 MS |
2266 | if (erp_action) |
2267 | erp_action->fsf_req = NULL; | |
1da177e4 LT |
2268 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, |
2269 | lock_flags); | |
2448c459 | 2270 | return retval; |
1da177e4 LT |
2271 | } |
2272 | ||
2448c459 | 2273 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); |
1da177e4 | 2274 | |
2448c459 AH |
2275 | if (!erp_action) { |
2276 | wait_event(fsf_req->completion_wq, | |
2277 | fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
2448c459 | 2278 | zfcp_fsf_req_free(fsf_req); |
2448c459 | 2279 | } |
1da177e4 LT |
2280 | return retval; |
2281 | } | |
2282 | ||
2f8f3ed5 AH |
2283 | /** |
2284 | * zfcp_fsf_exchange_port_evaluate | |
2285 | * @fsf_req: fsf_req which belongs to xchg port data request | |
2286 | * @xchg_ok: specifies if xchg port data was incomplete or complete (0/1) | |
2287 | */ | |
2288 | static void | |
2289 | zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *fsf_req, int xchg_ok) | |
2290 | { | |
2291 | struct zfcp_adapter *adapter; | |
2292 | struct fsf_qtcb *qtcb; | |
2293 | struct fsf_qtcb_bottom_port *bottom, *data; | |
2294 | struct Scsi_Host *shost; | |
2295 | ||
2296 | adapter = fsf_req->adapter; | |
2297 | qtcb = fsf_req->qtcb; | |
2298 | bottom = &qtcb->bottom.port; | |
2299 | shost = adapter->scsi_host; | |
2300 | ||
2301 | data = (struct fsf_qtcb_bottom_port*) fsf_req->data; | |
2302 | if (data) | |
2303 | memcpy(data, bottom, sizeof(struct fsf_qtcb_bottom_port)); | |
2304 | ||
2305 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) | |
2306 | fc_host_permanent_port_name(shost) = bottom->wwpn; | |
2307 | else | |
2308 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
2309 | fc_host_maxframe_size(shost) = bottom->maximum_frame_size; | |
2310 | fc_host_supported_speeds(shost) = bottom->supported_speed; | |
2311 | } | |
1da177e4 LT |
2312 | |
2313 | /** | |
2314 | * zfcp_fsf_exchange_port_data_handler - handler for exchange_port_data request | |
2315 | * @fsf_req: pointer to struct zfcp_fsf_req | |
2316 | */ | |
2317 | static void | |
2318 | zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *fsf_req) | |
2319 | { | |
2f8f3ed5 AH |
2320 | struct zfcp_adapter *adapter; |
2321 | struct fsf_qtcb *qtcb; | |
2322 | ||
2323 | adapter = fsf_req->adapter; | |
2324 | qtcb = fsf_req->qtcb; | |
1da177e4 LT |
2325 | |
2326 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
2327 | return; | |
2328 | ||
aef4a983 | 2329 | switch (qtcb->header.fsf_status) { |
1da177e4 | 2330 | case FSF_GOOD: |
2f8f3ed5 | 2331 | zfcp_fsf_exchange_port_evaluate(fsf_req, 1); |
aef4a983 | 2332 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status); |
aef4a983 | 2333 | break; |
aef4a983 | 2334 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
2f8f3ed5 | 2335 | zfcp_fsf_exchange_port_evaluate(fsf_req, 0); |
aef4a983 | 2336 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status); |
aef4a983 MS |
2337 | zfcp_fsf_link_down_info_eval(adapter, |
2338 | &qtcb->header.fsf_status_qual.link_down_info); | |
1da177e4 | 2339 | break; |
1da177e4 | 2340 | default: |
aef4a983 MS |
2341 | debug_text_event(adapter->erp_dbf, 0, "xchg-port-ng"); |
2342 | debug_event(adapter->erp_dbf, 0, | |
1da177e4 LT |
2343 | &fsf_req->qtcb->header.fsf_status, sizeof(u32)); |
2344 | } | |
2345 | } | |
2346 | ||
2347 | ||
2348 | /* | |
2349 | * function: zfcp_fsf_open_port | |
2350 | * | |
2351 | * purpose: | |
2352 | * | |
2353 | * returns: address of initiated FSF request | |
2354 | * NULL - request could not be initiated | |
2355 | */ | |
2356 | int | |
2357 | zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) | |
2358 | { | |
2359 | volatile struct qdio_buffer_element *sbale; | |
2abbe866 | 2360 | struct zfcp_fsf_req *fsf_req; |
1da177e4 LT |
2361 | unsigned long lock_flags; |
2362 | int retval = 0; | |
2363 | ||
2364 | /* setup new FSF request */ | |
2365 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
2366 | FSF_QTCB_OPEN_PORT_WITH_DID, | |
2367 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
2368 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 2369 | &lock_flags, &fsf_req); |
1da177e4 LT |
2370 | if (retval < 0) { |
2371 | ZFCP_LOG_INFO("error: Could not create open port request " | |
2372 | "for port 0x%016Lx on adapter %s.\n", | |
2373 | erp_action->port->wwpn, | |
2374 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2375 | goto out; | |
2376 | } | |
2377 | ||
2abbe866 | 2378 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
2379 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
2380 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2381 | ||
2abbe866 | 2382 | fsf_req->qtcb->bottom.support.d_id = erp_action->port->d_id; |
1da177e4 | 2383 | atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->port->status); |
2abbe866 AH |
2384 | fsf_req->data = (unsigned long) erp_action->port; |
2385 | fsf_req->erp_action = erp_action; | |
2386 | erp_action->fsf_req = fsf_req; | |
1da177e4 | 2387 | |
2abbe866 AH |
2388 | zfcp_erp_start_timer(fsf_req); |
2389 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
2390 | if (retval) { |
2391 | ZFCP_LOG_INFO("error: Could not send open port request for " | |
2392 | "port 0x%016Lx on adapter %s.\n", | |
2393 | erp_action->port->wwpn, | |
2394 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2abbe866 | 2395 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
2396 | erp_action->fsf_req = NULL; |
2397 | goto out; | |
2398 | } | |
2399 | ||
2400 | ZFCP_LOG_DEBUG("open port request initiated " | |
2401 | "(adapter %s, port 0x%016Lx)\n", | |
2402 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2403 | erp_action->port->wwpn); | |
2404 | out: | |
2405 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
2406 | lock_flags); | |
2407 | return retval; | |
2408 | } | |
2409 | ||
2410 | /* | |
2411 | * function: zfcp_fsf_open_port_handler | |
2412 | * | |
2413 | * purpose: is called for finished Open Port command | |
2414 | * | |
2415 | * returns: | |
2416 | */ | |
2417 | static int | |
2418 | zfcp_fsf_open_port_handler(struct zfcp_fsf_req *fsf_req) | |
2419 | { | |
2420 | int retval = -EINVAL; | |
2421 | struct zfcp_port *port; | |
2422 | struct fsf_plogi *plogi; | |
2423 | struct fsf_qtcb_header *header; | |
2424 | u16 subtable, rule, counter; | |
2425 | ||
059c97d0 | 2426 | port = (struct zfcp_port *) fsf_req->data; |
1da177e4 LT |
2427 | header = &fsf_req->qtcb->header; |
2428 | ||
2429 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
2430 | /* don't change port status in our bookkeeping */ | |
2431 | goto skip_fsfstatus; | |
2432 | } | |
2433 | ||
2434 | /* evaluate FSF status in QTCB */ | |
2435 | switch (header->fsf_status) { | |
2436 | ||
2437 | case FSF_PORT_ALREADY_OPEN: | |
1da177e4 LT |
2438 | ZFCP_LOG_NORMAL("bug: remote port 0x%016Lx on adapter %s " |
2439 | "is already open.\n", | |
2440 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2441 | debug_text_exception(fsf_req->adapter->erp_dbf, 0, | |
2442 | "fsf_s_popen"); | |
2443 | /* | |
2444 | * This is a bug, however operation should continue normally | |
2445 | * if it is simply ignored | |
2446 | */ | |
2447 | break; | |
2448 | ||
2449 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
2450 | ZFCP_LOG_NORMAL("Access denied, cannot open port 0x%016Lx " |
2451 | "on adapter %s\n", | |
2452 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2453 | for (counter = 0; counter < 2; counter++) { | |
2454 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
2455 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
2456 | switch (subtable) { | |
2457 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
2458 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
2459 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
2460 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
2461 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
2462 | zfcp_act_subtable_type[subtable], rule); | |
2463 | break; | |
2464 | } | |
2465 | } | |
2466 | debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_access"); | |
2467 | zfcp_erp_port_access_denied(port); | |
2468 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2469 | break; | |
2470 | ||
2471 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: | |
1da177e4 LT |
2472 | ZFCP_LOG_INFO("error: The FSF adapter is out of resources. " |
2473 | "The remote port 0x%016Lx on adapter %s " | |
2474 | "could not be opened. Disabling it.\n", | |
2475 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2476 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
2477 | "fsf_s_max_ports"); | |
2478 | zfcp_erp_port_failed(port); | |
2479 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2480 | break; | |
2481 | ||
2482 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
2483 | switch (header->fsf_status_qual.word[0]) { |
2484 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
2485 | debug_text_event(fsf_req->adapter->erp_dbf, 1, |
2486 | "fsf_sq_ltest"); | |
2487 | /* ERP strategy will escalate */ | |
2488 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2489 | break; | |
2490 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
2491 | /* ERP strategy will escalate */ | |
2492 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
2493 | "fsf_sq_ulp"); | |
2494 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2495 | break; | |
2496 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
1da177e4 LT |
2497 | ZFCP_LOG_NORMAL("The remote port 0x%016Lx on " |
2498 | "adapter %s could not be opened. " | |
2499 | "Disabling it.\n", | |
2500 | port->wwpn, | |
2501 | zfcp_get_busid_by_port(port)); | |
2502 | debug_text_exception(fsf_req->adapter->erp_dbf, 0, | |
2503 | "fsf_sq_no_retry"); | |
2504 | zfcp_erp_port_failed(port); | |
2505 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2506 | break; | |
2507 | default: | |
2508 | ZFCP_LOG_NORMAL | |
2509 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
2510 | header->fsf_status_qual.word[0]); | |
2511 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
2512 | "fsf_sq_inval:"); | |
2513 | debug_exception( | |
2514 | fsf_req->adapter->erp_dbf, 0, | |
2515 | &header->fsf_status_qual.word[0], | |
2516 | sizeof (u32)); | |
2517 | break; | |
2518 | } | |
2519 | break; | |
2520 | ||
2521 | case FSF_GOOD: | |
1da177e4 LT |
2522 | /* save port handle assigned by FSF */ |
2523 | port->handle = header->port_handle; | |
2524 | ZFCP_LOG_INFO("The remote port 0x%016Lx via adapter %s " | |
2525 | "was opened, it's port handle is 0x%x\n", | |
2526 | port->wwpn, zfcp_get_busid_by_port(port), | |
2527 | port->handle); | |
2528 | /* mark port as open */ | |
2529 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN | | |
2530 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
d736a27b AH |
2531 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
2532 | ZFCP_STATUS_COMMON_ACCESS_BOXED, | |
2533 | &port->status); | |
1da177e4 LT |
2534 | retval = 0; |
2535 | /* check whether D_ID has changed during open */ | |
2536 | /* | |
2537 | * FIXME: This check is not airtight, as the FCP channel does | |
2538 | * not monitor closures of target port connections caused on | |
2539 | * the remote side. Thus, they might miss out on invalidating | |
2540 | * locally cached WWPNs (and other N_Port parameters) of gone | |
2541 | * target ports. So, our heroic attempt to make things safe | |
2542 | * could be undermined by 'open port' response data tagged with | |
2543 | * obsolete WWPNs. Another reason to monitor potential | |
2544 | * connection closures ourself at least (by interpreting | |
2545 | * incoming ELS' and unsolicited status). It just crosses my | |
2546 | * mind that one should be able to cross-check by means of | |
2547 | * another GID_PN straight after a port has been opened. | |
2548 | * Alternately, an ADISC/PDISC ELS should suffice, as well. | |
2549 | */ | |
2550 | plogi = (struct fsf_plogi *) fsf_req->qtcb->bottom.support.els; | |
2551 | if (!atomic_test_mask(ZFCP_STATUS_PORT_NO_WWPN, &port->status)) | |
2552 | { | |
2553 | if (fsf_req->qtcb->bottom.support.els1_length < | |
75bfc283 | 2554 | sizeof (struct fsf_plogi)) { |
1da177e4 LT |
2555 | ZFCP_LOG_INFO( |
2556 | "warning: insufficient length of " | |
2557 | "PLOGI payload (%i)\n", | |
2558 | fsf_req->qtcb->bottom.support.els1_length); | |
2559 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
2560 | "fsf_s_short_plogi:"); | |
2561 | /* skip sanity check and assume wwpn is ok */ | |
2562 | } else { | |
2563 | if (plogi->serv_param.wwpn != port->wwpn) { | |
2564 | ZFCP_LOG_INFO("warning: d_id of port " | |
2565 | "0x%016Lx changed during " | |
2566 | "open\n", port->wwpn); | |
2567 | debug_text_event( | |
2568 | fsf_req->adapter->erp_dbf, 0, | |
2569 | "fsf_s_did_change:"); | |
2570 | atomic_clear_mask( | |
2571 | ZFCP_STATUS_PORT_DID_DID, | |
2572 | &port->status); | |
75bfc283 | 2573 | } else { |
1da177e4 | 2574 | port->wwnn = plogi->serv_param.wwnn; |
75bfc283 RW |
2575 | zfcp_plogi_evaluate(port, plogi); |
2576 | } | |
1da177e4 LT |
2577 | } |
2578 | } | |
2579 | break; | |
2580 | ||
2581 | case FSF_UNKNOWN_OP_SUBTYPE: | |
2582 | /* should never occure, subtype not set in zfcp_fsf_open_port */ | |
1da177e4 LT |
2583 | ZFCP_LOG_INFO("unknown operation subtype (adapter: %s, " |
2584 | "op_subtype=0x%x)\n", | |
2585 | zfcp_get_busid_by_port(port), | |
2586 | fsf_req->qtcb->bottom.support.operation_subtype); | |
2587 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2588 | break; | |
2589 | ||
2590 | default: | |
2591 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
2592 | "(debug info 0x%x)\n", | |
2593 | header->fsf_status); | |
2594 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:"); | |
2595 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
2596 | &header->fsf_status, sizeof (u32)); | |
2597 | break; | |
2598 | } | |
2599 | ||
2600 | skip_fsfstatus: | |
2601 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &port->status); | |
2602 | return retval; | |
2603 | } | |
2604 | ||
2605 | /* | |
2606 | * function: zfcp_fsf_close_port | |
2607 | * | |
2608 | * purpose: submit FSF command "close port" | |
2609 | * | |
2610 | * returns: address of initiated FSF request | |
2611 | * NULL - request could not be initiated | |
2612 | */ | |
2613 | int | |
2614 | zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) | |
2615 | { | |
2616 | volatile struct qdio_buffer_element *sbale; | |
2abbe866 | 2617 | struct zfcp_fsf_req *fsf_req; |
1da177e4 LT |
2618 | unsigned long lock_flags; |
2619 | int retval = 0; | |
2620 | ||
2621 | /* setup new FSF request */ | |
2622 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
2623 | FSF_QTCB_CLOSE_PORT, | |
2624 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
2625 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 2626 | &lock_flags, &fsf_req); |
1da177e4 LT |
2627 | if (retval < 0) { |
2628 | ZFCP_LOG_INFO("error: Could not create a close port request " | |
2629 | "for port 0x%016Lx on adapter %s.\n", | |
2630 | erp_action->port->wwpn, | |
2631 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2632 | goto out; | |
2633 | } | |
2634 | ||
2abbe866 | 2635 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
2636 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
2637 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2638 | ||
2639 | atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->port->status); | |
2abbe866 AH |
2640 | fsf_req->data = (unsigned long) erp_action->port; |
2641 | fsf_req->erp_action = erp_action; | |
2642 | fsf_req->qtcb->header.port_handle = erp_action->port->handle; | |
2643 | fsf_req->erp_action = erp_action; | |
2644 | erp_action->fsf_req = fsf_req; | |
2645 | ||
2646 | zfcp_erp_start_timer(fsf_req); | |
2647 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
2648 | if (retval) { |
2649 | ZFCP_LOG_INFO("error: Could not send a close port request for " | |
2650 | "port 0x%016Lx on adapter %s.\n", | |
2651 | erp_action->port->wwpn, | |
2652 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2abbe866 | 2653 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
2654 | erp_action->fsf_req = NULL; |
2655 | goto out; | |
2656 | } | |
2657 | ||
2658 | ZFCP_LOG_TRACE("close port request initiated " | |
2659 | "(adapter %s, port 0x%016Lx)\n", | |
2660 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2661 | erp_action->port->wwpn); | |
2662 | out: | |
2663 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
2664 | lock_flags); | |
2665 | return retval; | |
2666 | } | |
2667 | ||
2668 | /* | |
2669 | * function: zfcp_fsf_close_port_handler | |
2670 | * | |
2671 | * purpose: is called for finished Close Port FSF command | |
2672 | * | |
2673 | * returns: | |
2674 | */ | |
2675 | static int | |
2676 | zfcp_fsf_close_port_handler(struct zfcp_fsf_req *fsf_req) | |
2677 | { | |
2678 | int retval = -EINVAL; | |
2679 | struct zfcp_port *port; | |
2680 | ||
059c97d0 | 2681 | port = (struct zfcp_port *) fsf_req->data; |
1da177e4 LT |
2682 | |
2683 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
2684 | /* don't change port status in our bookkeeping */ | |
2685 | goto skip_fsfstatus; | |
2686 | } | |
2687 | ||
2688 | /* evaluate FSF status in QTCB */ | |
2689 | switch (fsf_req->qtcb->header.fsf_status) { | |
2690 | ||
2691 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
2692 | ZFCP_LOG_INFO("Temporary port identifier 0x%x for port " |
2693 | "0x%016Lx on adapter %s invalid. This may happen " | |
2694 | "occasionally.\n", port->handle, | |
2695 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2696 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
2697 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
2698 | (char *) &fsf_req->qtcb->header.fsf_status_qual, | |
2699 | sizeof (union fsf_status_qual)); | |
2700 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
2701 | "fsf_s_phand_nv"); | |
2702 | zfcp_erp_adapter_reopen(port->adapter, 0); | |
2703 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2704 | break; | |
2705 | ||
2706 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
2707 | /* Note: FSF has actually closed the port in this case. |
2708 | * The status code is just daft. Fingers crossed for a change | |
2709 | */ | |
2710 | retval = 0; | |
2711 | break; | |
2712 | ||
2713 | case FSF_GOOD: | |
1da177e4 LT |
2714 | ZFCP_LOG_TRACE("remote port 0x016%Lx on adapter %s closed, " |
2715 | "port handle 0x%x\n", port->wwpn, | |
2716 | zfcp_get_busid_by_port(port), port->handle); | |
2717 | zfcp_erp_modify_port_status(port, | |
2718 | ZFCP_STATUS_COMMON_OPEN, | |
2719 | ZFCP_CLEAR); | |
2720 | retval = 0; | |
2721 | break; | |
2722 | ||
2723 | default: | |
2724 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
2725 | "(debug info 0x%x)\n", | |
2726 | fsf_req->qtcb->header.fsf_status); | |
2727 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:"); | |
2728 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
2729 | &fsf_req->qtcb->header.fsf_status, | |
2730 | sizeof (u32)); | |
2731 | break; | |
2732 | } | |
2733 | ||
2734 | skip_fsfstatus: | |
2735 | atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &port->status); | |
2736 | return retval; | |
2737 | } | |
2738 | ||
2739 | /* | |
2740 | * function: zfcp_fsf_close_physical_port | |
2741 | * | |
2742 | * purpose: submit FSF command "close physical port" | |
2743 | * | |
2744 | * returns: address of initiated FSF request | |
2745 | * NULL - request could not be initiated | |
2746 | */ | |
2747 | int | |
2748 | zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) | |
2749 | { | |
1da177e4 | 2750 | volatile struct qdio_buffer_element *sbale; |
2abbe866 AH |
2751 | struct zfcp_fsf_req *fsf_req; |
2752 | unsigned long lock_flags; | |
2753 | int retval = 0; | |
1da177e4 LT |
2754 | |
2755 | /* setup new FSF request */ | |
2756 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
2757 | FSF_QTCB_CLOSE_PHYSICAL_PORT, | |
2758 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
2759 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 2760 | &lock_flags, &fsf_req); |
1da177e4 LT |
2761 | if (retval < 0) { |
2762 | ZFCP_LOG_INFO("error: Could not create close physical port " | |
2763 | "request (adapter %s, port 0x%016Lx)\n", | |
2764 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2765 | erp_action->port->wwpn); | |
2766 | ||
2767 | goto out; | |
2768 | } | |
2769 | ||
2abbe866 | 2770 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
2771 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
2772 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2773 | ||
2774 | /* mark port as being closed */ | |
2775 | atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, | |
2776 | &erp_action->port->status); | |
2777 | /* save a pointer to this port */ | |
2abbe866 AH |
2778 | fsf_req->data = (unsigned long) erp_action->port; |
2779 | fsf_req->qtcb->header.port_handle = erp_action->port->handle; | |
2780 | fsf_req->erp_action = erp_action; | |
2781 | erp_action->fsf_req = fsf_req; | |
2782 | ||
2783 | zfcp_erp_start_timer(fsf_req); | |
2784 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
2785 | if (retval) { |
2786 | ZFCP_LOG_INFO("error: Could not send close physical port " | |
2787 | "request (adapter %s, port 0x%016Lx)\n", | |
2788 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2789 | erp_action->port->wwpn); | |
2abbe866 | 2790 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
2791 | erp_action->fsf_req = NULL; |
2792 | goto out; | |
2793 | } | |
2794 | ||
2795 | ZFCP_LOG_TRACE("close physical port request initiated " | |
2796 | "(adapter %s, port 0x%016Lx)\n", | |
2797 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2798 | erp_action->port->wwpn); | |
2799 | out: | |
2800 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
2801 | lock_flags); | |
2802 | return retval; | |
2803 | } | |
2804 | ||
2805 | /* | |
2806 | * function: zfcp_fsf_close_physical_port_handler | |
2807 | * | |
2808 | * purpose: is called for finished Close Physical Port FSF command | |
2809 | * | |
2810 | * returns: | |
2811 | */ | |
2812 | static int | |
2813 | zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *fsf_req) | |
2814 | { | |
2815 | int retval = -EINVAL; | |
2816 | struct zfcp_port *port; | |
2817 | struct zfcp_unit *unit; | |
2818 | struct fsf_qtcb_header *header; | |
2819 | u16 subtable, rule, counter; | |
2820 | ||
059c97d0 | 2821 | port = (struct zfcp_port *) fsf_req->data; |
1da177e4 LT |
2822 | header = &fsf_req->qtcb->header; |
2823 | ||
2824 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
2825 | /* don't change port status in our bookkeeping */ | |
2826 | goto skip_fsfstatus; | |
2827 | } | |
2828 | ||
2829 | /* evaluate FSF status in QTCB */ | |
2830 | switch (header->fsf_status) { | |
2831 | ||
2832 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
2833 | ZFCP_LOG_INFO("Temporary port identifier 0x%x invalid" |
2834 | "(adapter %s, port 0x%016Lx). " | |
2835 | "This may happen occasionally.\n", | |
2836 | port->handle, | |
2837 | zfcp_get_busid_by_port(port), | |
2838 | port->wwpn); | |
2839 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
2840 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
2841 | (char *) &header->fsf_status_qual, | |
2842 | sizeof (union fsf_status_qual)); | |
2843 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
2844 | "fsf_s_phand_nv"); | |
2845 | zfcp_erp_adapter_reopen(port->adapter, 0); | |
2846 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2847 | break; | |
2848 | ||
2849 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
2850 | ZFCP_LOG_NORMAL("Access denied, cannot close " |
2851 | "physical port 0x%016Lx on adapter %s\n", | |
2852 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2853 | for (counter = 0; counter < 2; counter++) { | |
2854 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
2855 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
2856 | switch (subtable) { | |
2857 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
2858 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
2859 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
2860 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
2861 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
2862 | zfcp_act_subtable_type[subtable], rule); | |
2863 | break; | |
2864 | } | |
2865 | } | |
2866 | debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_access"); | |
2867 | zfcp_erp_port_access_denied(port); | |
2868 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2869 | break; | |
2870 | ||
2871 | case FSF_PORT_BOXED: | |
1da177e4 LT |
2872 | ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter " |
2873 | "%s needs to be reopened but it was attempted " | |
2874 | "to close it physically.\n", | |
2875 | port->wwpn, | |
2876 | zfcp_get_busid_by_port(port)); | |
2877 | debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_pboxed"); | |
d736a27b | 2878 | zfcp_erp_port_boxed(port); |
1da177e4 LT |
2879 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
2880 | ZFCP_STATUS_FSFREQ_RETRY; | |
2881 | break; | |
2882 | ||
2883 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
2884 | switch (header->fsf_status_qual.word[0]) { |
2885 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
2886 | debug_text_event(fsf_req->adapter->erp_dbf, 1, |
2887 | "fsf_sq_ltest"); | |
2888 | /* This will now be escalated by ERP */ | |
2889 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2890 | break; | |
2891 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
2892 | /* ERP strategy will escalate */ |
2893 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
2894 | "fsf_sq_ulp"); | |
2895 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2896 | break; | |
2897 | default: | |
2898 | ZFCP_LOG_NORMAL | |
2899 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
2900 | header->fsf_status_qual.word[0]); | |
2901 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
2902 | "fsf_sq_inval:"); | |
2903 | debug_exception( | |
2904 | fsf_req->adapter->erp_dbf, 0, | |
2905 | &header->fsf_status_qual.word[0], sizeof (u32)); | |
2906 | break; | |
2907 | } | |
2908 | break; | |
2909 | ||
2910 | case FSF_GOOD: | |
1da177e4 LT |
2911 | ZFCP_LOG_DEBUG("Remote port 0x%016Lx via adapter %s " |
2912 | "physically closed, port handle 0x%x\n", | |
2913 | port->wwpn, | |
2914 | zfcp_get_busid_by_port(port), port->handle); | |
2915 | /* can't use generic zfcp_erp_modify_port_status because | |
2916 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port | |
2917 | */ | |
2918 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
2919 | list_for_each_entry(unit, &port->unit_list_head, list) | |
2920 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); | |
2921 | retval = 0; | |
2922 | break; | |
2923 | ||
2924 | default: | |
2925 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
2926 | "(debug info 0x%x)\n", | |
2927 | header->fsf_status); | |
2928 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:"); | |
2929 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
2930 | &header->fsf_status, sizeof (u32)); | |
2931 | break; | |
2932 | } | |
2933 | ||
2934 | skip_fsfstatus: | |
2935 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, &port->status); | |
2936 | return retval; | |
2937 | } | |
2938 | ||
2939 | /* | |
2940 | * function: zfcp_fsf_open_unit | |
2941 | * | |
2942 | * purpose: | |
2943 | * | |
2944 | * returns: | |
2945 | * | |
2946 | * assumptions: This routine does not check whether the associated | |
2947 | * remote port has already been opened. This should be | |
2948 | * done by calling routines. Otherwise some status | |
2949 | * may be presented by FSF | |
2950 | */ | |
2951 | int | |
2952 | zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) | |
2953 | { | |
2954 | volatile struct qdio_buffer_element *sbale; | |
2abbe866 | 2955 | struct zfcp_fsf_req *fsf_req; |
1da177e4 LT |
2956 | unsigned long lock_flags; |
2957 | int retval = 0; | |
2958 | ||
2959 | /* setup new FSF request */ | |
2960 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
2961 | FSF_QTCB_OPEN_LUN, | |
2962 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
2963 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 2964 | &lock_flags, &fsf_req); |
1da177e4 LT |
2965 | if (retval < 0) { |
2966 | ZFCP_LOG_INFO("error: Could not create open unit request for " | |
2967 | "unit 0x%016Lx on port 0x%016Lx on adapter %s.\n", | |
2968 | erp_action->unit->fcp_lun, | |
2969 | erp_action->unit->port->wwpn, | |
2970 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2971 | goto out; | |
2972 | } | |
2973 | ||
2abbe866 | 2974 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
2975 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
2976 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2977 | ||
2abbe866 AH |
2978 | fsf_req->qtcb->header.port_handle = erp_action->port->handle; |
2979 | fsf_req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun; | |
aef4a983 | 2980 | if (!(erp_action->adapter->connection_features & FSF_FEATURE_NPIV_MODE)) |
2abbe866 | 2981 | fsf_req->qtcb->bottom.support.option = |
06506d00 | 2982 | FSF_OPEN_LUN_SUPPRESS_BOXING; |
1da177e4 | 2983 | atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->unit->status); |
2abbe866 AH |
2984 | fsf_req->data = (unsigned long) erp_action->unit; |
2985 | fsf_req->erp_action = erp_action; | |
2986 | erp_action->fsf_req = fsf_req; | |
1da177e4 | 2987 | |
2abbe866 AH |
2988 | zfcp_erp_start_timer(fsf_req); |
2989 | retval = zfcp_fsf_req_send(erp_action->fsf_req); | |
1da177e4 LT |
2990 | if (retval) { |
2991 | ZFCP_LOG_INFO("error: Could not send an open unit request " | |
2992 | "on the adapter %s, port 0x%016Lx for " | |
2993 | "unit 0x%016Lx\n", | |
2994 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2995 | erp_action->port->wwpn, | |
2996 | erp_action->unit->fcp_lun); | |
2abbe866 | 2997 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
2998 | erp_action->fsf_req = NULL; |
2999 | goto out; | |
3000 | } | |
3001 | ||
3002 | ZFCP_LOG_TRACE("Open LUN request initiated (adapter %s, " | |
3003 | "port 0x%016Lx, unit 0x%016Lx)\n", | |
3004 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
3005 | erp_action->port->wwpn, erp_action->unit->fcp_lun); | |
3006 | out: | |
3007 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
3008 | lock_flags); | |
3009 | return retval; | |
3010 | } | |
3011 | ||
3012 | /* | |
3013 | * function: zfcp_fsf_open_unit_handler | |
3014 | * | |
3015 | * purpose: is called for finished Open LUN command | |
3016 | * | |
3017 | * returns: | |
3018 | */ | |
3019 | static int | |
3020 | zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *fsf_req) | |
3021 | { | |
3022 | int retval = -EINVAL; | |
3023 | struct zfcp_adapter *adapter; | |
3024 | struct zfcp_unit *unit; | |
3025 | struct fsf_qtcb_header *header; | |
3026 | struct fsf_qtcb_bottom_support *bottom; | |
3027 | struct fsf_queue_designator *queue_designator; | |
3028 | u16 subtable, rule, counter; | |
aef4a983 | 3029 | int exclusive, readwrite; |
1da177e4 | 3030 | |
059c97d0 | 3031 | unit = (struct zfcp_unit *) fsf_req->data; |
1da177e4 LT |
3032 | |
3033 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
3034 | /* don't change unit status in our bookkeeping */ | |
3035 | goto skip_fsfstatus; | |
3036 | } | |
3037 | ||
3038 | adapter = fsf_req->adapter; | |
3039 | header = &fsf_req->qtcb->header; | |
3040 | bottom = &fsf_req->qtcb->bottom.support; | |
3041 | queue_designator = &header->fsf_status_qual.fsf_queue_designator; | |
3042 | ||
1da177e4 LT |
3043 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
3044 | ZFCP_STATUS_UNIT_SHARED | | |
3045 | ZFCP_STATUS_UNIT_READONLY, | |
3046 | &unit->status); | |
3047 | ||
3048 | /* evaluate FSF status in QTCB */ | |
3049 | switch (header->fsf_status) { | |
3050 | ||
3051 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
3052 | ZFCP_LOG_INFO("Temporary port identifier 0x%x " |
3053 | "for port 0x%016Lx on adapter %s invalid " | |
3054 | "This may happen occasionally\n", | |
3055 | unit->port->handle, | |
3056 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3057 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
3058 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3059 | (char *) &header->fsf_status_qual, | |
3060 | sizeof (union fsf_status_qual)); | |
3061 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_ph_nv"); | |
3062 | zfcp_erp_adapter_reopen(unit->port->adapter, 0); | |
3063 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3064 | break; | |
3065 | ||
3066 | case FSF_LUN_ALREADY_OPEN: | |
1da177e4 LT |
3067 | ZFCP_LOG_NORMAL("bug: Attempted to open unit 0x%016Lx on " |
3068 | "remote port 0x%016Lx on adapter %s twice.\n", | |
3069 | unit->fcp_lun, | |
3070 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3071 | debug_text_exception(adapter->erp_dbf, 0, | |
3072 | "fsf_s_uopen"); | |
3073 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3074 | break; | |
3075 | ||
3076 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
3077 | ZFCP_LOG_NORMAL("Access denied, cannot open unit 0x%016Lx on " |
3078 | "remote port 0x%016Lx on adapter %s\n", | |
3079 | unit->fcp_lun, unit->port->wwpn, | |
3080 | zfcp_get_busid_by_unit(unit)); | |
3081 | for (counter = 0; counter < 2; counter++) { | |
3082 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
3083 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
3084 | switch (subtable) { | |
3085 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
3086 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
3087 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
3088 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
3089 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
3090 | zfcp_act_subtable_type[subtable], rule); | |
3091 | break; | |
3092 | } | |
3093 | } | |
3094 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_access"); | |
3095 | zfcp_erp_unit_access_denied(unit); | |
3096 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); | |
3097 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); | |
3098 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3099 | break; | |
3100 | ||
3101 | case FSF_PORT_BOXED: | |
1da177e4 LT |
3102 | ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s " |
3103 | "needs to be reopened\n", | |
3104 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3105 | debug_text_event(adapter->erp_dbf, 2, "fsf_s_pboxed"); | |
d736a27b | 3106 | zfcp_erp_port_boxed(unit->port); |
1da177e4 LT |
3107 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
3108 | ZFCP_STATUS_FSFREQ_RETRY; | |
3109 | break; | |
3110 | ||
3111 | case FSF_LUN_SHARING_VIOLATION: | |
1da177e4 LT |
3112 | if (header->fsf_status_qual.word[0] != 0) { |
3113 | ZFCP_LOG_NORMAL("FCP-LUN 0x%Lx at the remote port " | |
3114 | "with WWPN 0x%Lx " | |
3115 | "connected to the adapter %s " | |
3116 | "is already in use in LPAR%d, CSS%d\n", | |
3117 | unit->fcp_lun, | |
3118 | unit->port->wwpn, | |
3119 | zfcp_get_busid_by_unit(unit), | |
3120 | queue_designator->hla, | |
3121 | queue_designator->cssid); | |
3122 | } else { | |
3123 | subtable = header->fsf_status_qual.halfword[4]; | |
3124 | rule = header->fsf_status_qual.halfword[5]; | |
3125 | switch (subtable) { | |
3126 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
3127 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
3128 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
3129 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
3130 | ZFCP_LOG_NORMAL("Access to FCP-LUN 0x%Lx at the " | |
3131 | "remote port with WWPN 0x%Lx " | |
3132 | "connected to the adapter %s " | |
3133 | "is denied (%s rule %d)\n", | |
3134 | unit->fcp_lun, | |
3135 | unit->port->wwpn, | |
3136 | zfcp_get_busid_by_unit(unit), | |
3137 | zfcp_act_subtable_type[subtable], | |
3138 | rule); | |
3139 | break; | |
3140 | } | |
3141 | } | |
3142 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
3143 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3144 | (char *) &header->fsf_status_qual, | |
3145 | sizeof (union fsf_status_qual)); | |
3146 | debug_text_event(adapter->erp_dbf, 2, | |
3147 | "fsf_s_l_sh_vio"); | |
3148 | zfcp_erp_unit_access_denied(unit); | |
3149 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); | |
3150 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); | |
3151 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3152 | break; | |
3153 | ||
3154 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: | |
1da177e4 LT |
3155 | ZFCP_LOG_INFO("error: The adapter ran out of resources. " |
3156 | "There is no handle (temporary port identifier) " | |
3157 | "available for unit 0x%016Lx on port 0x%016Lx " | |
3158 | "on adapter %s\n", | |
3159 | unit->fcp_lun, | |
3160 | unit->port->wwpn, | |
3161 | zfcp_get_busid_by_unit(unit)); | |
3162 | debug_text_event(adapter->erp_dbf, 1, | |
3163 | "fsf_s_max_units"); | |
3164 | zfcp_erp_unit_failed(unit); | |
3165 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3166 | break; | |
3167 | ||
3168 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
3169 | switch (header->fsf_status_qual.word[0]) { |
3170 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
3171 | /* Re-establish link to port */ |
3172 | debug_text_event(adapter->erp_dbf, 1, | |
3173 | "fsf_sq_ltest"); | |
65a8d4e1 | 3174 | zfcp_test_link(unit->port); |
1da177e4 LT |
3175 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3176 | break; | |
3177 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
3178 | /* ERP strategy will escalate */ |
3179 | debug_text_event(adapter->erp_dbf, 1, | |
3180 | "fsf_sq_ulp"); | |
3181 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3182 | break; | |
3183 | default: | |
3184 | ZFCP_LOG_NORMAL | |
3185 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
3186 | header->fsf_status_qual.word[0]); | |
3187 | debug_text_event(adapter->erp_dbf, 0, | |
3188 | "fsf_sq_inval:"); | |
3189 | debug_exception(adapter->erp_dbf, 0, | |
3190 | &header->fsf_status_qual.word[0], | |
3191 | sizeof (u32)); | |
3192 | } | |
3193 | break; | |
3194 | ||
3195 | case FSF_INVALID_COMMAND_OPTION: | |
1da177e4 LT |
3196 | ZFCP_LOG_NORMAL( |
3197 | "Invalid option 0x%x has been specified " | |
3198 | "in QTCB bottom sent to the adapter %s\n", | |
3199 | bottom->option, | |
3200 | zfcp_get_busid_by_adapter(adapter)); | |
3201 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3202 | retval = -EINVAL; | |
3203 | break; | |
3204 | ||
3205 | case FSF_GOOD: | |
1da177e4 LT |
3206 | /* save LUN handle assigned by FSF */ |
3207 | unit->handle = header->lun_handle; | |
3208 | ZFCP_LOG_TRACE("unit 0x%016Lx on remote port 0x%016Lx on " | |
3209 | "adapter %s opened, port handle 0x%x\n", | |
3210 | unit->fcp_lun, | |
3211 | unit->port->wwpn, | |
3212 | zfcp_get_busid_by_unit(unit), | |
3213 | unit->handle); | |
3214 | /* mark unit as open */ | |
3215 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); | |
aef4a983 MS |
3216 | |
3217 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) && | |
3218 | (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) && | |
3219 | (adapter->ccw_device->id.dev_model != ZFCP_DEVICE_MODEL_PRIV)) { | |
3220 | exclusive = (bottom->lun_access_info & | |
3221 | FSF_UNIT_ACCESS_EXCLUSIVE); | |
3222 | readwrite = (bottom->lun_access_info & | |
3223 | FSF_UNIT_ACCESS_OUTBOUND_TRANSFER); | |
3224 | ||
1da177e4 LT |
3225 | if (!exclusive) |
3226 | atomic_set_mask(ZFCP_STATUS_UNIT_SHARED, | |
3227 | &unit->status); | |
3228 | ||
3229 | if (!readwrite) { | |
3230 | atomic_set_mask(ZFCP_STATUS_UNIT_READONLY, | |
3231 | &unit->status); | |
3232 | ZFCP_LOG_NORMAL("read-only access for unit " | |
3233 | "(adapter %s, wwpn=0x%016Lx, " | |
3234 | "fcp_lun=0x%016Lx)\n", | |
3235 | zfcp_get_busid_by_unit(unit), | |
3236 | unit->port->wwpn, | |
3237 | unit->fcp_lun); | |
3238 | } | |
3239 | ||
3240 | if (exclusive && !readwrite) { | |
3241 | ZFCP_LOG_NORMAL("exclusive access of read-only " | |
3242 | "unit not supported\n"); | |
3243 | zfcp_erp_unit_failed(unit); | |
3244 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3245 | zfcp_erp_unit_shutdown(unit, 0); | |
3246 | } else if (!exclusive && readwrite) { | |
3247 | ZFCP_LOG_NORMAL("shared access of read-write " | |
3248 | "unit not supported\n"); | |
3249 | zfcp_erp_unit_failed(unit); | |
3250 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3251 | zfcp_erp_unit_shutdown(unit, 0); | |
3252 | } | |
3253 | } | |
3254 | ||
3255 | retval = 0; | |
3256 | break; | |
3257 | ||
3258 | default: | |
3259 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
3260 | "(debug info 0x%x)\n", | |
3261 | header->fsf_status); | |
3262 | debug_text_event(adapter->erp_dbf, 0, "fsf_s_inval:"); | |
3263 | debug_exception(adapter->erp_dbf, 0, | |
3264 | &header->fsf_status, sizeof (u32)); | |
3265 | break; | |
3266 | } | |
3267 | ||
3268 | skip_fsfstatus: | |
3269 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &unit->status); | |
3270 | return retval; | |
3271 | } | |
3272 | ||
3273 | /* | |
3274 | * function: zfcp_fsf_close_unit | |
3275 | * | |
3276 | * purpose: | |
3277 | * | |
3278 | * returns: address of fsf_req - request successfully initiated | |
3279 | * NULL - | |
3280 | * | |
3281 | * assumptions: This routine does not check whether the associated | |
3282 | * remote port/lun has already been opened. This should be | |
3283 | * done by calling routines. Otherwise some status | |
3284 | * may be presented by FSF | |
3285 | */ | |
3286 | int | |
3287 | zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) | |
3288 | { | |
3289 | volatile struct qdio_buffer_element *sbale; | |
2abbe866 | 3290 | struct zfcp_fsf_req *fsf_req; |
1da177e4 LT |
3291 | unsigned long lock_flags; |
3292 | int retval = 0; | |
3293 | ||
3294 | /* setup new FSF request */ | |
3295 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
3296 | FSF_QTCB_CLOSE_LUN, | |
3297 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
3298 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 3299 | &lock_flags, &fsf_req); |
1da177e4 LT |
3300 | if (retval < 0) { |
3301 | ZFCP_LOG_INFO("error: Could not create close unit request for " | |
3302 | "unit 0x%016Lx on port 0x%016Lx on adapter %s.\n", | |
3303 | erp_action->unit->fcp_lun, | |
3304 | erp_action->port->wwpn, | |
3305 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
3306 | goto out; | |
3307 | } | |
3308 | ||
2abbe866 | 3309 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
3310 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
3311 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
3312 | ||
2abbe866 AH |
3313 | fsf_req->qtcb->header.port_handle = erp_action->port->handle; |
3314 | fsf_req->qtcb->header.lun_handle = erp_action->unit->handle; | |
1da177e4 | 3315 | atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->unit->status); |
2abbe866 AH |
3316 | fsf_req->data = (unsigned long) erp_action->unit; |
3317 | fsf_req->erp_action = erp_action; | |
3318 | erp_action->fsf_req = fsf_req; | |
1da177e4 | 3319 | |
2abbe866 AH |
3320 | zfcp_erp_start_timer(fsf_req); |
3321 | retval = zfcp_fsf_req_send(erp_action->fsf_req); | |
1da177e4 LT |
3322 | if (retval) { |
3323 | ZFCP_LOG_INFO("error: Could not send a close unit request for " | |
3324 | "unit 0x%016Lx on port 0x%016Lx onadapter %s.\n", | |
3325 | erp_action->unit->fcp_lun, | |
3326 | erp_action->port->wwpn, | |
3327 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2abbe866 | 3328 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
3329 | erp_action->fsf_req = NULL; |
3330 | goto out; | |
3331 | } | |
3332 | ||
3333 | ZFCP_LOG_TRACE("Close LUN request initiated (adapter %s, " | |
3334 | "port 0x%016Lx, unit 0x%016Lx)\n", | |
3335 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
3336 | erp_action->port->wwpn, erp_action->unit->fcp_lun); | |
3337 | out: | |
3338 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
3339 | lock_flags); | |
3340 | return retval; | |
3341 | } | |
3342 | ||
3343 | /* | |
3344 | * function: zfcp_fsf_close_unit_handler | |
3345 | * | |
3346 | * purpose: is called for finished Close LUN FSF command | |
3347 | * | |
3348 | * returns: | |
3349 | */ | |
3350 | static int | |
3351 | zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *fsf_req) | |
3352 | { | |
3353 | int retval = -EINVAL; | |
3354 | struct zfcp_unit *unit; | |
3355 | ||
059c97d0 | 3356 | unit = (struct zfcp_unit *) fsf_req->data; |
1da177e4 LT |
3357 | |
3358 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
3359 | /* don't change unit status in our bookkeeping */ | |
3360 | goto skip_fsfstatus; | |
3361 | } | |
3362 | ||
3363 | /* evaluate FSF status in QTCB */ | |
3364 | switch (fsf_req->qtcb->header.fsf_status) { | |
3365 | ||
3366 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
3367 | ZFCP_LOG_INFO("Temporary port identifier 0x%x for port " |
3368 | "0x%016Lx on adapter %s invalid. This may " | |
3369 | "happen in rare circumstances\n", | |
3370 | unit->port->handle, | |
3371 | unit->port->wwpn, | |
3372 | zfcp_get_busid_by_unit(unit)); | |
3373 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
3374 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3375 | (char *) &fsf_req->qtcb->header.fsf_status_qual, | |
3376 | sizeof (union fsf_status_qual)); | |
3377 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3378 | "fsf_s_phand_nv"); | |
3379 | zfcp_erp_adapter_reopen(unit->port->adapter, 0); | |
1da177e4 LT |
3380 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3381 | break; | |
3382 | ||
3383 | case FSF_LUN_HANDLE_NOT_VALID: | |
1da177e4 LT |
3384 | ZFCP_LOG_INFO("Temporary LUN identifier 0x%x of unit " |
3385 | "0x%016Lx on port 0x%016Lx on adapter %s is " | |
3386 | "invalid. This may happen occasionally.\n", | |
3387 | unit->handle, | |
3388 | unit->fcp_lun, | |
3389 | unit->port->wwpn, | |
3390 | zfcp_get_busid_by_unit(unit)); | |
3391 | ZFCP_LOG_DEBUG("Status qualifier data:\n"); | |
3392 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3393 | (char *) &fsf_req->qtcb->header.fsf_status_qual, | |
3394 | sizeof (union fsf_status_qual)); | |
3395 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3396 | "fsf_s_lhand_nv"); | |
3397 | zfcp_erp_port_reopen(unit->port, 0); | |
1da177e4 LT |
3398 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3399 | break; | |
3400 | ||
3401 | case FSF_PORT_BOXED: | |
1da177e4 LT |
3402 | ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s " |
3403 | "needs to be reopened\n", | |
3404 | unit->port->wwpn, | |
3405 | zfcp_get_busid_by_unit(unit)); | |
3406 | debug_text_event(fsf_req->adapter->erp_dbf, 2, "fsf_s_pboxed"); | |
d736a27b | 3407 | zfcp_erp_port_boxed(unit->port); |
1da177e4 LT |
3408 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
3409 | ZFCP_STATUS_FSFREQ_RETRY; | |
3410 | break; | |
3411 | ||
3412 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
3413 | switch (fsf_req->qtcb->header.fsf_status_qual.word[0]) { |
3414 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
3415 | /* re-establish link to port */ |
3416 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3417 | "fsf_sq_ltest"); | |
65a8d4e1 | 3418 | zfcp_test_link(unit->port); |
1da177e4 LT |
3419 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3420 | break; | |
3421 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
3422 | /* ERP strategy will escalate */ |
3423 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3424 | "fsf_sq_ulp"); | |
3425 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3426 | break; | |
3427 | default: | |
3428 | ZFCP_LOG_NORMAL | |
3429 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
3430 | fsf_req->qtcb->header.fsf_status_qual.word[0]); | |
3431 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
3432 | "fsf_sq_inval:"); | |
3433 | debug_exception( | |
3434 | fsf_req->adapter->erp_dbf, 0, | |
3435 | &fsf_req->qtcb->header.fsf_status_qual.word[0], | |
3436 | sizeof (u32)); | |
3437 | break; | |
3438 | } | |
3439 | break; | |
3440 | ||
3441 | case FSF_GOOD: | |
1da177e4 LT |
3442 | ZFCP_LOG_TRACE("unit 0x%016Lx on port 0x%016Lx on adapter %s " |
3443 | "closed, port handle 0x%x\n", | |
3444 | unit->fcp_lun, | |
3445 | unit->port->wwpn, | |
3446 | zfcp_get_busid_by_unit(unit), | |
3447 | unit->handle); | |
3448 | /* mark unit as closed */ | |
3449 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); | |
3450 | retval = 0; | |
3451 | break; | |
3452 | ||
3453 | default: | |
3454 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
3455 | "(debug info 0x%x)\n", | |
3456 | fsf_req->qtcb->header.fsf_status); | |
3457 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:"); | |
3458 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
3459 | &fsf_req->qtcb->header.fsf_status, | |
3460 | sizeof (u32)); | |
3461 | break; | |
3462 | } | |
3463 | ||
3464 | skip_fsfstatus: | |
3465 | atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &unit->status); | |
3466 | return retval; | |
3467 | } | |
3468 | ||
3469 | /** | |
3470 | * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command) | |
3471 | * @adapter: adapter where scsi command is issued | |
3472 | * @unit: unit where command is sent to | |
3473 | * @scsi_cmnd: scsi command to be sent | |
3474 | * @timer: timer to be started when request is initiated | |
3475 | * @req_flags: flags for fsf_request | |
3476 | */ | |
3477 | int | |
3478 | zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter, | |
3479 | struct zfcp_unit *unit, | |
3480 | struct scsi_cmnd * scsi_cmnd, | |
2abbe866 | 3481 | int use_timer, int req_flags) |
1da177e4 LT |
3482 | { |
3483 | struct zfcp_fsf_req *fsf_req = NULL; | |
3484 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
3485 | unsigned int sbtype; | |
3486 | unsigned long lock_flags; | |
3487 | int real_bytes = 0; | |
3488 | int retval = 0; | |
3489 | int mask; | |
3490 | ||
3491 | /* setup new FSF request */ | |
3492 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, | |
3493 | adapter->pool.fsf_req_scsi, | |
3494 | &lock_flags, &fsf_req); | |
3495 | if (unlikely(retval < 0)) { | |
3496 | ZFCP_LOG_DEBUG("error: Could not create FCP command request " | |
3497 | "for unit 0x%016Lx on port 0x%016Lx on " | |
3498 | "adapter %s\n", | |
3499 | unit->fcp_lun, | |
3500 | unit->port->wwpn, | |
3501 | zfcp_get_busid_by_adapter(adapter)); | |
3502 | goto failed_req_create; | |
3503 | } | |
3504 | ||
059c97d0 AH |
3505 | zfcp_unit_get(unit); |
3506 | fsf_req->unit = unit; | |
1da177e4 | 3507 | |
059c97d0 | 3508 | /* associate FSF request with SCSI request (for look up on abort) */ |
4eff4a36 | 3509 | scsi_cmnd->host_scribble = (unsigned char *) fsf_req->req_id; |
059c97d0 AH |
3510 | |
3511 | /* associate SCSI command with FSF request */ | |
3512 | fsf_req->data = (unsigned long) scsi_cmnd; | |
1da177e4 LT |
3513 | |
3514 | /* set handles of unit and its parent port in QTCB */ | |
3515 | fsf_req->qtcb->header.lun_handle = unit->handle; | |
3516 | fsf_req->qtcb->header.port_handle = unit->port->handle; | |
3517 | ||
3518 | /* FSF does not define the structure of the FCP_CMND IU */ | |
3519 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) | |
3520 | &(fsf_req->qtcb->bottom.io.fcp_cmnd); | |
3521 | ||
3522 | /* | |
3523 | * set depending on data direction: | |
3524 | * data direction bits in SBALE (SB Type) | |
3525 | * data direction bits in QTCB | |
3526 | * data direction bits in FCP_CMND IU | |
3527 | */ | |
3528 | switch (scsi_cmnd->sc_data_direction) { | |
3529 | case DMA_NONE: | |
1da177e4 LT |
3530 | fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; |
3531 | /* | |
3532 | * FIXME(qdio): | |
3533 | * what is the correct type for commands | |
3534 | * without 'real' data buffers? | |
3535 | */ | |
3536 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
3537 | break; | |
3538 | case DMA_FROM_DEVICE: | |
1da177e4 LT |
3539 | fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ; |
3540 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
3541 | fcp_cmnd_iu->rddata = 1; | |
3542 | break; | |
3543 | case DMA_TO_DEVICE: | |
1da177e4 LT |
3544 | fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE; |
3545 | sbtype = SBAL_FLAGS0_TYPE_WRITE; | |
3546 | fcp_cmnd_iu->wddata = 1; | |
3547 | break; | |
3548 | case DMA_BIDIRECTIONAL: | |
1da177e4 LT |
3549 | default: |
3550 | /* | |
3551 | * dummy, catch this condition earlier | |
3552 | * in zfcp_scsi_queuecommand | |
3553 | */ | |
3554 | goto failed_scsi_cmnd; | |
3555 | } | |
3556 | ||
3557 | /* set FC service class in QTCB (3 per default) */ | |
06506d00 | 3558 | fsf_req->qtcb->bottom.io.service_class = ZFCP_FC_SERVICE_CLASS_DEFAULT; |
1da177e4 LT |
3559 | |
3560 | /* set FCP_LUN in FCP_CMND IU in QTCB */ | |
3561 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
3562 | ||
3563 | mask = ZFCP_STATUS_UNIT_READONLY | ZFCP_STATUS_UNIT_SHARED; | |
3564 | ||
3565 | /* set task attributes in FCP_CMND IU in QTCB */ | |
3566 | if (likely((scsi_cmnd->device->simple_tags) || | |
3567 | (atomic_test_mask(mask, &unit->status)))) | |
3568 | fcp_cmnd_iu->task_attribute = SIMPLE_Q; | |
3569 | else | |
3570 | fcp_cmnd_iu->task_attribute = UNTAGGED; | |
3571 | ||
3572 | /* set additional length of FCP_CDB in FCP_CMND IU in QTCB, if needed */ | |
3573 | if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH)) { | |
3574 | fcp_cmnd_iu->add_fcp_cdb_length | |
3575 | = (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2; | |
3576 | ZFCP_LOG_TRACE("SCSI CDB length is 0x%x, " | |
3577 | "additional FCP_CDB length is 0x%x " | |
3578 | "(shifted right 2 bits)\n", | |
3579 | scsi_cmnd->cmd_len, | |
3580 | fcp_cmnd_iu->add_fcp_cdb_length); | |
3581 | } | |
3582 | /* | |
3583 | * copy SCSI CDB (including additional length, if any) to | |
3584 | * FCP_CDB in FCP_CMND IU in QTCB | |
3585 | */ | |
3586 | memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); | |
3587 | ||
3588 | /* FCP CMND IU length in QTCB */ | |
3589 | fsf_req->qtcb->bottom.io.fcp_cmnd_length = | |
3590 | sizeof (struct fcp_cmnd_iu) + | |
3591 | fcp_cmnd_iu->add_fcp_cdb_length + sizeof (fcp_dl_t); | |
3592 | ||
3593 | /* generate SBALEs from data buffer */ | |
3594 | real_bytes = zfcp_qdio_sbals_from_scsicmnd(fsf_req, sbtype, scsi_cmnd); | |
3595 | if (unlikely(real_bytes < 0)) { | |
3596 | if (fsf_req->sbal_number < ZFCP_MAX_SBALS_PER_REQ) { | |
3597 | ZFCP_LOG_DEBUG( | |
3598 | "Data did not fit into available buffer(s), " | |
3599 | "waiting for more...\n"); | |
3600 | retval = -EIO; | |
3601 | } else { | |
3602 | ZFCP_LOG_NORMAL("error: No truncation implemented but " | |
3603 | "required. Shutting down unit " | |
3604 | "(adapter %s, port 0x%016Lx, " | |
3605 | "unit 0x%016Lx)\n", | |
3606 | zfcp_get_busid_by_unit(unit), | |
3607 | unit->port->wwpn, | |
3608 | unit->fcp_lun); | |
3609 | zfcp_erp_unit_shutdown(unit, 0); | |
3610 | retval = -EINVAL; | |
3611 | } | |
3612 | goto no_fit; | |
3613 | } | |
3614 | ||
3615 | /* set length of FCP data length in FCP_CMND IU in QTCB */ | |
3616 | zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes); | |
3617 | ||
3618 | ZFCP_LOG_DEBUG("Sending SCSI command:\n"); | |
3619 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3620 | (char *) scsi_cmnd->cmnd, scsi_cmnd->cmd_len); | |
3621 | ||
2abbe866 AH |
3622 | if (use_timer) |
3623 | zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); | |
3624 | ||
3625 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
3626 | if (unlikely(retval < 0)) { |
3627 | ZFCP_LOG_INFO("error: Could not send FCP command request " | |
3628 | "on adapter %s, port 0x%016Lx, unit 0x%016Lx\n", | |
3629 | zfcp_get_busid_by_adapter(adapter), | |
3630 | unit->port->wwpn, | |
3631 | unit->fcp_lun); | |
3632 | goto send_failed; | |
3633 | } | |
3634 | ||
3635 | ZFCP_LOG_TRACE("Send FCP Command initiated (adapter %s, " | |
3636 | "port 0x%016Lx, unit 0x%016Lx)\n", | |
3637 | zfcp_get_busid_by_adapter(adapter), | |
3638 | unit->port->wwpn, | |
3639 | unit->fcp_lun); | |
3640 | goto success; | |
3641 | ||
3642 | send_failed: | |
3643 | no_fit: | |
3644 | failed_scsi_cmnd: | |
059c97d0 | 3645 | zfcp_unit_put(unit); |
1da177e4 LT |
3646 | zfcp_fsf_req_free(fsf_req); |
3647 | fsf_req = NULL; | |
3648 | scsi_cmnd->host_scribble = NULL; | |
3649 | success: | |
3650 | failed_req_create: | |
3651 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
3652 | return retval; | |
3653 | } | |
3654 | ||
1da177e4 LT |
3655 | struct zfcp_fsf_req * |
3656 | zfcp_fsf_send_fcp_command_task_management(struct zfcp_adapter *adapter, | |
3657 | struct zfcp_unit *unit, | |
3658 | u8 tm_flags, int req_flags) | |
3659 | { | |
3660 | struct zfcp_fsf_req *fsf_req = NULL; | |
3661 | int retval = 0; | |
3662 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
3663 | unsigned long lock_flags; | |
3664 | volatile struct qdio_buffer_element *sbale; | |
3665 | ||
3666 | /* setup new FSF request */ | |
3667 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, | |
3668 | adapter->pool.fsf_req_scsi, | |
3669 | &lock_flags, &fsf_req); | |
3670 | if (retval < 0) { | |
3671 | ZFCP_LOG_INFO("error: Could not create FCP command (task " | |
3672 | "management) request for adapter %s, port " | |
3673 | " 0x%016Lx, unit 0x%016Lx.\n", | |
3674 | zfcp_get_busid_by_adapter(adapter), | |
3675 | unit->port->wwpn, unit->fcp_lun); | |
3676 | goto out; | |
3677 | } | |
3678 | ||
3679 | /* | |
3680 | * Used to decide on proper handler in the return path, | |
3681 | * could be either zfcp_fsf_send_fcp_command_task_handler or | |
3682 | * zfcp_fsf_send_fcp_command_task_management_handler */ | |
3683 | ||
3684 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT; | |
3685 | ||
3686 | /* | |
3687 | * hold a pointer to the unit being target of this | |
3688 | * task management request | |
3689 | */ | |
059c97d0 | 3690 | fsf_req->data = (unsigned long) unit; |
1da177e4 LT |
3691 | |
3692 | /* set FSF related fields in QTCB */ | |
3693 | fsf_req->qtcb->header.lun_handle = unit->handle; | |
3694 | fsf_req->qtcb->header.port_handle = unit->port->handle; | |
3695 | fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
06506d00 | 3696 | fsf_req->qtcb->bottom.io.service_class = ZFCP_FC_SERVICE_CLASS_DEFAULT; |
1da177e4 LT |
3697 | fsf_req->qtcb->bottom.io.fcp_cmnd_length = |
3698 | sizeof (struct fcp_cmnd_iu) + sizeof (fcp_dl_t); | |
3699 | ||
3700 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
3701 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE; | |
3702 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
3703 | ||
3704 | /* set FCP related fields in FCP_CMND IU in QTCB */ | |
3705 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) | |
3706 | &(fsf_req->qtcb->bottom.io.fcp_cmnd); | |
3707 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
3708 | fcp_cmnd_iu->task_management_flags = tm_flags; | |
3709 | ||
2abbe866 AH |
3710 | zfcp_fsf_start_timer(fsf_req, ZFCP_SCSI_ER_TIMEOUT); |
3711 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 | 3712 | if (retval) { |
1da177e4 LT |
3713 | ZFCP_LOG_INFO("error: Could not send an FCP-command (task " |
3714 | "management) on adapter %s, port 0x%016Lx for " | |
3715 | "unit LUN 0x%016Lx\n", | |
3716 | zfcp_get_busid_by_adapter(adapter), | |
3717 | unit->port->wwpn, | |
3718 | unit->fcp_lun); | |
3719 | zfcp_fsf_req_free(fsf_req); | |
3720 | fsf_req = NULL; | |
3721 | goto out; | |
3722 | } | |
3723 | ||
3724 | ZFCP_LOG_TRACE("Send FCP Command (task management function) initiated " | |
3725 | "(adapter %s, port 0x%016Lx, unit 0x%016Lx, " | |
3726 | "tm_flags=0x%x)\n", | |
3727 | zfcp_get_busid_by_adapter(adapter), | |
3728 | unit->port->wwpn, | |
3729 | unit->fcp_lun, | |
3730 | tm_flags); | |
3731 | out: | |
3732 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
3733 | return fsf_req; | |
3734 | } | |
3735 | ||
3736 | /* | |
3737 | * function: zfcp_fsf_send_fcp_command_handler | |
3738 | * | |
3739 | * purpose: is called for finished Send FCP Command | |
3740 | * | |
3741 | * returns: | |
3742 | */ | |
3743 | static int | |
3744 | zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *fsf_req) | |
3745 | { | |
3746 | int retval = -EINVAL; | |
3747 | struct zfcp_unit *unit; | |
3748 | struct fsf_qtcb_header *header; | |
3749 | u16 subtable, rule, counter; | |
3750 | ||
3751 | header = &fsf_req->qtcb->header; | |
3752 | ||
3753 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)) | |
059c97d0 | 3754 | unit = (struct zfcp_unit *) fsf_req->data; |
1da177e4 | 3755 | else |
059c97d0 | 3756 | unit = fsf_req->unit; |
1da177e4 LT |
3757 | |
3758 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
3759 | /* go directly to calls of special handlers */ | |
3760 | goto skip_fsfstatus; | |
3761 | } | |
3762 | ||
3763 | /* evaluate FSF status in QTCB */ | |
3764 | switch (header->fsf_status) { | |
3765 | ||
3766 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
3767 | ZFCP_LOG_INFO("Temporary port identifier 0x%x for port " |
3768 | "0x%016Lx on adapter %s invalid\n", | |
3769 | unit->port->handle, | |
3770 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3771 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3772 | (char *) &header->fsf_status_qual, | |
3773 | sizeof (union fsf_status_qual)); | |
3774 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3775 | "fsf_s_phand_nv"); | |
3776 | zfcp_erp_adapter_reopen(unit->port->adapter, 0); | |
3777 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3778 | break; | |
3779 | ||
3780 | case FSF_LUN_HANDLE_NOT_VALID: | |
1da177e4 LT |
3781 | ZFCP_LOG_INFO("Temporary LUN identifier 0x%x for unit " |
3782 | "0x%016Lx on port 0x%016Lx on adapter %s is " | |
3783 | "invalid. This may happen occasionally.\n", | |
3784 | unit->handle, | |
3785 | unit->fcp_lun, | |
3786 | unit->port->wwpn, | |
3787 | zfcp_get_busid_by_unit(unit)); | |
3788 | ZFCP_LOG_NORMAL("Status qualifier data:\n"); | |
3789 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL, | |
3790 | (char *) &header->fsf_status_qual, | |
3791 | sizeof (union fsf_status_qual)); | |
3792 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3793 | "fsf_s_uhand_nv"); | |
3794 | zfcp_erp_port_reopen(unit->port, 0); | |
3795 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3796 | break; | |
3797 | ||
3798 | case FSF_HANDLE_MISMATCH: | |
1da177e4 LT |
3799 | ZFCP_LOG_NORMAL("bug: The port handle 0x%x has changed " |
3800 | "unexpectedly. (adapter %s, port 0x%016Lx, " | |
3801 | "unit 0x%016Lx)\n", | |
3802 | unit->port->handle, | |
3803 | zfcp_get_busid_by_unit(unit), | |
3804 | unit->port->wwpn, | |
3805 | unit->fcp_lun); | |
3806 | ZFCP_LOG_NORMAL("status qualifier:\n"); | |
3807 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL, | |
3808 | (char *) &header->fsf_status_qual, | |
3809 | sizeof (union fsf_status_qual)); | |
3810 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3811 | "fsf_s_hand_mis"); | |
3812 | zfcp_erp_adapter_reopen(unit->port->adapter, 0); | |
1da177e4 LT |
3813 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3814 | break; | |
3815 | ||
3816 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: | |
06506d00 AH |
3817 | ZFCP_LOG_INFO("error: adapter %s does not support fc " |
3818 | "class %d.\n", | |
3819 | zfcp_get_busid_by_unit(unit), | |
3820 | ZFCP_FC_SERVICE_CLASS_DEFAULT); | |
1da177e4 LT |
3821 | /* stop operation for this adapter */ |
3822 | debug_text_exception(fsf_req->adapter->erp_dbf, 0, | |
3823 | "fsf_s_class_nsup"); | |
3824 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0); | |
1da177e4 LT |
3825 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3826 | break; | |
3827 | ||
3828 | case FSF_FCPLUN_NOT_VALID: | |
1da177e4 LT |
3829 | ZFCP_LOG_NORMAL("bug: unit 0x%016Lx on port 0x%016Lx on " |
3830 | "adapter %s does not have correct unit " | |
3831 | "handle 0x%x\n", | |
3832 | unit->fcp_lun, | |
3833 | unit->port->wwpn, | |
3834 | zfcp_get_busid_by_unit(unit), | |
3835 | unit->handle); | |
3836 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
3837 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3838 | (char *) &header->fsf_status_qual, | |
3839 | sizeof (union fsf_status_qual)); | |
3840 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3841 | "fsf_s_fcp_lun_nv"); | |
3842 | zfcp_erp_port_reopen(unit->port, 0); | |
1da177e4 LT |
3843 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3844 | break; | |
3845 | ||
3846 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
3847 | ZFCP_LOG_NORMAL("Access denied, cannot send FCP command to " |
3848 | "unit 0x%016Lx on port 0x%016Lx on " | |
3849 | "adapter %s\n", unit->fcp_lun, unit->port->wwpn, | |
3850 | zfcp_get_busid_by_unit(unit)); | |
3851 | for (counter = 0; counter < 2; counter++) { | |
3852 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
3853 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
3854 | switch (subtable) { | |
3855 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
3856 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
3857 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
3858 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
3859 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
3860 | zfcp_act_subtable_type[subtable], rule); | |
3861 | break; | |
3862 | } | |
3863 | } | |
3864 | debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_access"); | |
3865 | zfcp_erp_unit_access_denied(unit); | |
3866 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3867 | break; | |
3868 | ||
3869 | case FSF_DIRECTION_INDICATOR_NOT_VALID: | |
1da177e4 LT |
3870 | ZFCP_LOG_INFO("bug: Invalid data direction given for unit " |
3871 | "0x%016Lx on port 0x%016Lx on adapter %s " | |
3872 | "(debug info %d)\n", | |
3873 | unit->fcp_lun, | |
3874 | unit->port->wwpn, | |
3875 | zfcp_get_busid_by_unit(unit), | |
3876 | fsf_req->qtcb->bottom.io.data_direction); | |
3877 | /* stop operation for this adapter */ | |
3878 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
3879 | "fsf_s_dir_ind_nv"); | |
3880 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0); | |
1da177e4 LT |
3881 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3882 | break; | |
3883 | ||
3884 | case FSF_CMND_LENGTH_NOT_VALID: | |
1da177e4 LT |
3885 | ZFCP_LOG_NORMAL |
3886 | ("bug: An invalid control-data-block length field " | |
3887 | "was found in a command for unit 0x%016Lx on port " | |
3888 | "0x%016Lx on adapter %s " "(debug info %d)\n", | |
3889 | unit->fcp_lun, unit->port->wwpn, | |
3890 | zfcp_get_busid_by_unit(unit), | |
3891 | fsf_req->qtcb->bottom.io.fcp_cmnd_length); | |
3892 | /* stop operation for this adapter */ | |
3893 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
3894 | "fsf_s_cmd_len_nv"); | |
3895 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0); | |
1da177e4 LT |
3896 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3897 | break; | |
3898 | ||
3899 | case FSF_PORT_BOXED: | |
1da177e4 LT |
3900 | ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s " |
3901 | "needs to be reopened\n", | |
3902 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3903 | debug_text_event(fsf_req->adapter->erp_dbf, 2, "fsf_s_pboxed"); | |
d736a27b | 3904 | zfcp_erp_port_boxed(unit->port); |
1da177e4 LT |
3905 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
3906 | ZFCP_STATUS_FSFREQ_RETRY; | |
3907 | break; | |
3908 | ||
3909 | case FSF_LUN_BOXED: | |
1da177e4 LT |
3910 | ZFCP_LOG_NORMAL("unit needs to be reopened (adapter %s, " |
3911 | "wwpn=0x%016Lx, fcp_lun=0x%016Lx)\n", | |
3912 | zfcp_get_busid_by_unit(unit), | |
3913 | unit->port->wwpn, unit->fcp_lun); | |
3914 | debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_lboxed"); | |
d736a27b | 3915 | zfcp_erp_unit_boxed(unit); |
1da177e4 LT |
3916 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
3917 | | ZFCP_STATUS_FSFREQ_RETRY; | |
3918 | break; | |
3919 | ||
3920 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
3921 | switch (header->fsf_status_qual.word[0]) { |
3922 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
3923 | /* re-establish link to port */ |
3924 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3925 | "fsf_sq_ltest"); | |
65a8d4e1 | 3926 | zfcp_test_link(unit->port); |
1da177e4 LT |
3927 | break; |
3928 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
3929 | /* FIXME(hw) need proper specs for proper action */ |
3930 | /* let scsi stack deal with retries and escalation */ | |
3931 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3932 | "fsf_sq_ulp"); | |
1da177e4 LT |
3933 | break; |
3934 | default: | |
1da177e4 | 3935 | ZFCP_LOG_NORMAL |
516a4201 | 3936 | ("Unknown status qualifier 0x%x arrived.\n", |
1da177e4 LT |
3937 | header->fsf_status_qual.word[0]); |
3938 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
3939 | "fsf_sq_inval:"); | |
3940 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
3941 | &header->fsf_status_qual.word[0], | |
3942 | sizeof(u32)); | |
3943 | break; | |
3944 | } | |
516a4201 | 3945 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
3946 | break; |
3947 | ||
3948 | case FSF_GOOD: | |
1da177e4 LT |
3949 | break; |
3950 | ||
3951 | case FSF_FCP_RSP_AVAILABLE: | |
1da177e4 LT |
3952 | break; |
3953 | ||
3954 | default: | |
3955 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:"); | |
3956 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
3957 | &header->fsf_status, sizeof(u32)); | |
3958 | break; | |
3959 | } | |
3960 | ||
3961 | skip_fsfstatus: | |
3962 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT) { | |
3963 | retval = | |
3964 | zfcp_fsf_send_fcp_command_task_management_handler(fsf_req); | |
3965 | } else { | |
3966 | retval = zfcp_fsf_send_fcp_command_task_handler(fsf_req); | |
059c97d0 AH |
3967 | fsf_req->unit = NULL; |
3968 | zfcp_unit_put(unit); | |
1da177e4 LT |
3969 | } |
3970 | return retval; | |
3971 | } | |
3972 | ||
3973 | /* | |
3974 | * function: zfcp_fsf_send_fcp_command_task_handler | |
3975 | * | |
3976 | * purpose: evaluates FCP_RSP IU | |
3977 | * | |
3978 | * returns: | |
3979 | */ | |
3980 | static int | |
3981 | zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *fsf_req) | |
3982 | { | |
3983 | int retval = 0; | |
3984 | struct scsi_cmnd *scpnt; | |
3985 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) | |
3986 | &(fsf_req->qtcb->bottom.io.fcp_rsp); | |
3987 | struct fcp_cmnd_iu *fcp_cmnd_iu = (struct fcp_cmnd_iu *) | |
3988 | &(fsf_req->qtcb->bottom.io.fcp_cmnd); | |
3989 | u32 sns_len; | |
3990 | char *fcp_rsp_info = zfcp_get_fcp_rsp_info_ptr(fcp_rsp_iu); | |
3991 | unsigned long flags; | |
059c97d0 | 3992 | struct zfcp_unit *unit = fsf_req->unit; |
1da177e4 LT |
3993 | |
3994 | read_lock_irqsave(&fsf_req->adapter->abort_lock, flags); | |
059c97d0 | 3995 | scpnt = (struct scsi_cmnd *) fsf_req->data; |
1da177e4 LT |
3996 | if (unlikely(!scpnt)) { |
3997 | ZFCP_LOG_DEBUG | |
3998 | ("Command with fsf_req %p is not associated to " | |
3999 | "a scsi command anymore. Aborted?\n", fsf_req); | |
4000 | goto out; | |
4001 | } | |
4002 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ABORTED)) { | |
4003 | /* FIXME: (design) mid-layer should handle DID_ABORT like | |
4004 | * DID_SOFT_ERROR by retrying the request for devices | |
4005 | * that allow retries. | |
4006 | */ | |
4007 | ZFCP_LOG_DEBUG("Setting DID_SOFT_ERROR and SUGGEST_RETRY\n"); | |
4008 | set_host_byte(&scpnt->result, DID_SOFT_ERROR); | |
4009 | set_driver_byte(&scpnt->result, SUGGEST_RETRY); | |
4010 | goto skip_fsfstatus; | |
4011 | } | |
4012 | ||
4013 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
4014 | ZFCP_LOG_DEBUG("Setting DID_ERROR\n"); | |
4015 | set_host_byte(&scpnt->result, DID_ERROR); | |
4016 | goto skip_fsfstatus; | |
4017 | } | |
4018 | ||
4019 | /* set message byte of result in SCSI command */ | |
4020 | scpnt->result |= COMMAND_COMPLETE << 8; | |
4021 | ||
4022 | /* | |
4023 | * copy SCSI status code of FCP_STATUS of FCP_RSP IU to status byte | |
4024 | * of result in SCSI command | |
4025 | */ | |
4026 | scpnt->result |= fcp_rsp_iu->scsi_status; | |
4027 | if (unlikely(fcp_rsp_iu->scsi_status)) { | |
4028 | /* DEBUG */ | |
4029 | ZFCP_LOG_DEBUG("status for SCSI Command:\n"); | |
4030 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4031 | scpnt->cmnd, scpnt->cmd_len); | |
4032 | ZFCP_LOG_DEBUG("SCSI status code 0x%x\n", | |
4033 | fcp_rsp_iu->scsi_status); | |
4034 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4035 | (void *) fcp_rsp_iu, sizeof (struct fcp_rsp_iu)); | |
4036 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4037 | zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), | |
4038 | fcp_rsp_iu->fcp_sns_len); | |
4039 | } | |
4040 | ||
4041 | /* check FCP_RSP_INFO */ | |
4042 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) { | |
4043 | ZFCP_LOG_DEBUG("rsp_len is valid\n"); | |
4044 | switch (fcp_rsp_info[3]) { | |
4045 | case RSP_CODE_GOOD: | |
1da177e4 LT |
4046 | /* ok, continue */ |
4047 | ZFCP_LOG_TRACE("no failure or Task Management " | |
4048 | "Function complete\n"); | |
4049 | set_host_byte(&scpnt->result, DID_OK); | |
4050 | break; | |
4051 | case RSP_CODE_LENGTH_MISMATCH: | |
1da177e4 LT |
4052 | /* hardware bug */ |
4053 | ZFCP_LOG_NORMAL("bug: FCP response code indictates " | |
4054 | "that the fibrechannel protocol data " | |
4055 | "length differs from the burst length. " | |
4056 | "The problem occured on unit 0x%016Lx " | |
4057 | "on port 0x%016Lx on adapter %s", | |
4058 | unit->fcp_lun, | |
4059 | unit->port->wwpn, | |
4060 | zfcp_get_busid_by_unit(unit)); | |
4061 | /* dump SCSI CDB as prepared by zfcp */ | |
4062 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4063 | (char *) &fsf_req->qtcb-> | |
4064 | bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE); | |
1da177e4 LT |
4065 | set_host_byte(&scpnt->result, DID_ERROR); |
4066 | goto skip_fsfstatus; | |
4067 | case RSP_CODE_FIELD_INVALID: | |
1da177e4 LT |
4068 | /* driver or hardware bug */ |
4069 | ZFCP_LOG_NORMAL("bug: FCP response code indictates " | |
4070 | "that the fibrechannel protocol data " | |
4071 | "fields were incorrectly set up. " | |
4072 | "The problem occured on the unit " | |
4073 | "0x%016Lx on port 0x%016Lx on " | |
4074 | "adapter %s", | |
4075 | unit->fcp_lun, | |
4076 | unit->port->wwpn, | |
4077 | zfcp_get_busid_by_unit(unit)); | |
4078 | /* dump SCSI CDB as prepared by zfcp */ | |
4079 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4080 | (char *) &fsf_req->qtcb-> | |
4081 | bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE); | |
4082 | set_host_byte(&scpnt->result, DID_ERROR); | |
1da177e4 LT |
4083 | goto skip_fsfstatus; |
4084 | case RSP_CODE_RO_MISMATCH: | |
1da177e4 LT |
4085 | /* hardware bug */ |
4086 | ZFCP_LOG_NORMAL("bug: The FCP response code indicates " | |
4087 | "that conflicting values for the " | |
4088 | "fibrechannel payload offset from the " | |
4089 | "header were found. " | |
4090 | "The problem occured on unit 0x%016Lx " | |
4091 | "on port 0x%016Lx on adapter %s.\n", | |
4092 | unit->fcp_lun, | |
4093 | unit->port->wwpn, | |
4094 | zfcp_get_busid_by_unit(unit)); | |
4095 | /* dump SCSI CDB as prepared by zfcp */ | |
4096 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4097 | (char *) &fsf_req->qtcb-> | |
4098 | bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE); | |
1da177e4 LT |
4099 | set_host_byte(&scpnt->result, DID_ERROR); |
4100 | goto skip_fsfstatus; | |
4101 | default: | |
4102 | ZFCP_LOG_NORMAL("bug: An invalid FCP response " | |
4103 | "code was detected for a command. " | |
4104 | "The problem occured on the unit " | |
4105 | "0x%016Lx on port 0x%016Lx on " | |
4106 | "adapter %s (debug info 0x%x)\n", | |
4107 | unit->fcp_lun, | |
4108 | unit->port->wwpn, | |
4109 | zfcp_get_busid_by_unit(unit), | |
4110 | fcp_rsp_info[3]); | |
4111 | /* dump SCSI CDB as prepared by zfcp */ | |
4112 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4113 | (char *) &fsf_req->qtcb-> | |
4114 | bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE); | |
1da177e4 | 4115 | set_host_byte(&scpnt->result, DID_ERROR); |
6f71d9bc | 4116 | goto skip_fsfstatus; |
1da177e4 LT |
4117 | } |
4118 | } | |
4119 | ||
4120 | /* check for sense data */ | |
4121 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_sns_len_valid)) { | |
4122 | sns_len = FSF_FCP_RSP_SIZE - | |
4123 | sizeof (struct fcp_rsp_iu) + fcp_rsp_iu->fcp_rsp_len; | |
4124 | ZFCP_LOG_TRACE("room for %i bytes sense data in QTCB\n", | |
4125 | sns_len); | |
4126 | sns_len = min(sns_len, (u32) SCSI_SENSE_BUFFERSIZE); | |
4127 | ZFCP_LOG_TRACE("room for %i bytes sense data in SCSI command\n", | |
4128 | SCSI_SENSE_BUFFERSIZE); | |
4129 | sns_len = min(sns_len, fcp_rsp_iu->fcp_sns_len); | |
4130 | ZFCP_LOG_TRACE("scpnt->result =0x%x, command was:\n", | |
4131 | scpnt->result); | |
4132 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, | |
4133 | (void *) &scpnt->cmnd, scpnt->cmd_len); | |
4134 | ||
4135 | ZFCP_LOG_TRACE("%i bytes sense data provided by FCP\n", | |
4136 | fcp_rsp_iu->fcp_sns_len); | |
4137 | memcpy(&scpnt->sense_buffer, | |
4138 | zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len); | |
4139 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, | |
4140 | (void *) &scpnt->sense_buffer, sns_len); | |
4141 | } | |
4142 | ||
4143 | /* check for overrun */ | |
4144 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_over)) { | |
4145 | ZFCP_LOG_INFO("A data overrun was detected for a command. " | |
4146 | "unit 0x%016Lx, port 0x%016Lx, adapter %s. " | |
4147 | "The response data length is " | |
4148 | "%d, the original length was %d.\n", | |
4149 | unit->fcp_lun, | |
4150 | unit->port->wwpn, | |
4151 | zfcp_get_busid_by_unit(unit), | |
4152 | fcp_rsp_iu->fcp_resid, | |
4153 | (int) zfcp_get_fcp_dl(fcp_cmnd_iu)); | |
4154 | } | |
4155 | ||
4156 | /* check for underrun */ | |
4157 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_under)) { | |
4158 | ZFCP_LOG_INFO("A data underrun was detected for a command. " | |
4159 | "unit 0x%016Lx, port 0x%016Lx, adapter %s. " | |
4160 | "The response data length is " | |
4161 | "%d, the original length was %d.\n", | |
4162 | unit->fcp_lun, | |
4163 | unit->port->wwpn, | |
4164 | zfcp_get_busid_by_unit(unit), | |
4165 | fcp_rsp_iu->fcp_resid, | |
4166 | (int) zfcp_get_fcp_dl(fcp_cmnd_iu)); | |
4167 | ||
4168 | scpnt->resid = fcp_rsp_iu->fcp_resid; | |
4169 | if (scpnt->request_bufflen - scpnt->resid < scpnt->underflow) | |
6f71d9bc | 4170 | set_host_byte(&scpnt->result, DID_ERROR); |
1da177e4 LT |
4171 | } |
4172 | ||
4173 | skip_fsfstatus: | |
4174 | ZFCP_LOG_DEBUG("scpnt->result =0x%x\n", scpnt->result); | |
4175 | ||
8a36e453 | 4176 | if (scpnt->result != 0) |
ed829ad6 | 4177 | zfcp_scsi_dbf_event_result("erro", 3, fsf_req->adapter, scpnt, fsf_req); |
8a36e453 | 4178 | else if (scpnt->retries > 0) |
ed829ad6 | 4179 | zfcp_scsi_dbf_event_result("retr", 4, fsf_req->adapter, scpnt, fsf_req); |
8a36e453 | 4180 | else |
ed829ad6 | 4181 | zfcp_scsi_dbf_event_result("norm", 6, fsf_req->adapter, scpnt, fsf_req); |
1da177e4 LT |
4182 | |
4183 | /* cleanup pointer (need this especially for abort) */ | |
4184 | scpnt->host_scribble = NULL; | |
4185 | ||
1da177e4 | 4186 | /* always call back */ |
1da177e4 LT |
4187 | (scpnt->scsi_done) (scpnt); |
4188 | ||
4189 | /* | |
4190 | * We must hold this lock until scsi_done has been called. | |
4191 | * Otherwise we may call scsi_done after abort regarding this | |
4192 | * command has completed. | |
4193 | * Note: scsi_done must not block! | |
4194 | */ | |
4195 | out: | |
4196 | read_unlock_irqrestore(&fsf_req->adapter->abort_lock, flags); | |
4197 | return retval; | |
4198 | } | |
4199 | ||
4200 | /* | |
4201 | * function: zfcp_fsf_send_fcp_command_task_management_handler | |
4202 | * | |
4203 | * purpose: evaluates FCP_RSP IU | |
4204 | * | |
4205 | * returns: | |
4206 | */ | |
4207 | static int | |
4208 | zfcp_fsf_send_fcp_command_task_management_handler(struct zfcp_fsf_req *fsf_req) | |
4209 | { | |
4210 | int retval = 0; | |
4211 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) | |
4212 | &(fsf_req->qtcb->bottom.io.fcp_rsp); | |
4213 | char *fcp_rsp_info = zfcp_get_fcp_rsp_info_ptr(fcp_rsp_iu); | |
059c97d0 | 4214 | struct zfcp_unit *unit = (struct zfcp_unit *) fsf_req->data; |
1da177e4 | 4215 | |
1da177e4 LT |
4216 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { |
4217 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
4218 | goto skip_fsfstatus; | |
4219 | } | |
4220 | ||
4221 | /* check FCP_RSP_INFO */ | |
4222 | switch (fcp_rsp_info[3]) { | |
4223 | case RSP_CODE_GOOD: | |
1da177e4 LT |
4224 | /* ok, continue */ |
4225 | ZFCP_LOG_DEBUG("no failure or Task Management " | |
4226 | "Function complete\n"); | |
4227 | break; | |
4228 | case RSP_CODE_TASKMAN_UNSUPP: | |
1da177e4 LT |
4229 | ZFCP_LOG_NORMAL("bug: A reuested task management function " |
4230 | "is not supported on the target device " | |
4231 | "unit 0x%016Lx, port 0x%016Lx, adapter %s\n ", | |
4232 | unit->fcp_lun, | |
4233 | unit->port->wwpn, | |
4234 | zfcp_get_busid_by_unit(unit)); | |
4235 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP; | |
4236 | break; | |
4237 | case RSP_CODE_TASKMAN_FAILED: | |
1da177e4 LT |
4238 | ZFCP_LOG_NORMAL("bug: A reuested task management function " |
4239 | "failed to complete successfully. " | |
4240 | "unit 0x%016Lx, port 0x%016Lx, adapter %s.\n", | |
4241 | unit->fcp_lun, | |
4242 | unit->port->wwpn, | |
4243 | zfcp_get_busid_by_unit(unit)); | |
4244 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
4245 | break; | |
4246 | default: | |
4247 | ZFCP_LOG_NORMAL("bug: An invalid FCP response " | |
4248 | "code was detected for a command. " | |
4249 | "unit 0x%016Lx, port 0x%016Lx, adapter %s " | |
4250 | "(debug info 0x%x)\n", | |
4251 | unit->fcp_lun, | |
4252 | unit->port->wwpn, | |
4253 | zfcp_get_busid_by_unit(unit), | |
4254 | fcp_rsp_info[3]); | |
4255 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
4256 | } | |
4257 | ||
4258 | skip_fsfstatus: | |
4259 | return retval; | |
4260 | } | |
4261 | ||
4262 | ||
4263 | /* | |
4264 | * function: zfcp_fsf_control_file | |
4265 | * | |
4266 | * purpose: Initiator of the control file upload/download FSF requests | |
4267 | * | |
4268 | * returns: 0 - FSF request is successfuly created and queued | |
4269 | * -EOPNOTSUPP - The FCP adapter does not have Control File support | |
4270 | * -EINVAL - Invalid direction specified | |
4271 | * -ENOMEM - Insufficient memory | |
4272 | * -EPERM - Cannot create FSF request or place it in QDIO queue | |
4273 | */ | |
4274 | int | |
4275 | zfcp_fsf_control_file(struct zfcp_adapter *adapter, | |
4276 | struct zfcp_fsf_req **fsf_req_ptr, | |
4277 | u32 fsf_command, | |
4278 | u32 option, | |
4279 | struct zfcp_sg_list *sg_list) | |
4280 | { | |
4281 | struct zfcp_fsf_req *fsf_req; | |
4282 | struct fsf_qtcb_bottom_support *bottom; | |
4283 | volatile struct qdio_buffer_element *sbale; | |
1da177e4 LT |
4284 | unsigned long lock_flags; |
4285 | int req_flags = 0; | |
4286 | int direction; | |
4287 | int retval = 0; | |
4288 | ||
aef4a983 | 4289 | if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) { |
1da177e4 LT |
4290 | ZFCP_LOG_INFO("cfdc not supported (adapter %s)\n", |
4291 | zfcp_get_busid_by_adapter(adapter)); | |
4292 | retval = -EOPNOTSUPP; | |
4293 | goto out; | |
4294 | } | |
4295 | ||
4296 | switch (fsf_command) { | |
4297 | ||
4298 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
4299 | direction = SBAL_FLAGS0_TYPE_WRITE; | |
4300 | if ((option != FSF_CFDC_OPTION_FULL_ACCESS) && | |
4301 | (option != FSF_CFDC_OPTION_RESTRICTED_ACCESS)) | |
4302 | req_flags = ZFCP_WAIT_FOR_SBAL; | |
4303 | break; | |
4304 | ||
4305 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
4306 | direction = SBAL_FLAGS0_TYPE_READ; | |
4307 | break; | |
4308 | ||
4309 | default: | |
4310 | ZFCP_LOG_INFO("Invalid FSF command code 0x%08x\n", fsf_command); | |
4311 | retval = -EINVAL; | |
4312 | goto out; | |
4313 | } | |
4314 | ||
1da177e4 LT |
4315 | retval = zfcp_fsf_req_create(adapter, fsf_command, req_flags, |
4316 | NULL, &lock_flags, &fsf_req); | |
4317 | if (retval < 0) { | |
4318 | ZFCP_LOG_INFO("error: Could not create FSF request for the " | |
4319 | "adapter %s\n", | |
4320 | zfcp_get_busid_by_adapter(adapter)); | |
4321 | retval = -EPERM; | |
4322 | goto unlock_queue_lock; | |
4323 | } | |
4324 | ||
4325 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
4326 | sbale[0].flags |= direction; | |
4327 | ||
4328 | bottom = &fsf_req->qtcb->bottom.support; | |
4329 | bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE; | |
4330 | bottom->option = option; | |
4331 | ||
4332 | if (sg_list->count > 0) { | |
4333 | int bytes; | |
4334 | ||
4335 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, direction, | |
4336 | sg_list->sg, sg_list->count, | |
4337 | ZFCP_MAX_SBALS_PER_REQ); | |
4338 | if (bytes != ZFCP_CFDC_MAX_CONTROL_FILE_SIZE) { | |
4339 | ZFCP_LOG_INFO( | |
4340 | "error: Could not create sufficient number of " | |
4341 | "SBALS for an FSF request to the adapter %s\n", | |
4342 | zfcp_get_busid_by_adapter(adapter)); | |
4343 | retval = -ENOMEM; | |
4344 | goto free_fsf_req; | |
4345 | } | |
4346 | } else | |
4347 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
4348 | ||
2abbe866 AH |
4349 | zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); |
4350 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
4351 | if (retval < 0) { |
4352 | ZFCP_LOG_INFO("initiation of cfdc up/download failed" | |
4353 | "(adapter %s)\n", | |
4354 | zfcp_get_busid_by_adapter(adapter)); | |
4355 | retval = -EPERM; | |
4356 | goto free_fsf_req; | |
4357 | } | |
4358 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
4359 | ||
4360 | ZFCP_LOG_NORMAL("Control file %s FSF request has been sent to the " | |
4361 | "adapter %s\n", | |
4362 | fsf_command == FSF_QTCB_DOWNLOAD_CONTROL_FILE ? | |
4363 | "download" : "upload", | |
4364 | zfcp_get_busid_by_adapter(adapter)); | |
4365 | ||
4366 | wait_event(fsf_req->completion_wq, | |
4367 | fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
4368 | ||
4369 | *fsf_req_ptr = fsf_req; | |
2abbe866 | 4370 | goto out; |
1da177e4 LT |
4371 | |
4372 | free_fsf_req: | |
4373 | zfcp_fsf_req_free(fsf_req); | |
4374 | unlock_queue_lock: | |
4375 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
1da177e4 LT |
4376 | out: |
4377 | return retval; | |
4378 | } | |
4379 | ||
4380 | ||
4381 | /* | |
4382 | * function: zfcp_fsf_control_file_handler | |
4383 | * | |
4384 | * purpose: Handler of the control file upload/download FSF requests | |
4385 | * | |
4386 | * returns: 0 - FSF request successfuly processed | |
4387 | * -EAGAIN - Operation has to be repeated because of a temporary problem | |
4388 | * -EACCES - There is no permission to execute an operation | |
4389 | * -EPERM - The control file is not in a right format | |
4390 | * -EIO - There is a problem with the FCP adapter | |
4391 | * -EINVAL - Invalid operation | |
4392 | * -EFAULT - User space memory I/O operation fault | |
4393 | */ | |
4394 | static int | |
4395 | zfcp_fsf_control_file_handler(struct zfcp_fsf_req *fsf_req) | |
4396 | { | |
4397 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
4398 | struct fsf_qtcb_header *header = &fsf_req->qtcb->header; | |
4399 | struct fsf_qtcb_bottom_support *bottom = &fsf_req->qtcb->bottom.support; | |
4400 | int retval = 0; | |
4401 | ||
4402 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
4403 | retval = -EINVAL; | |
4404 | goto skip_fsfstatus; | |
4405 | } | |
4406 | ||
4407 | switch (header->fsf_status) { | |
4408 | ||
4409 | case FSF_GOOD: | |
1da177e4 LT |
4410 | ZFCP_LOG_NORMAL( |
4411 | "The FSF request has been successfully completed " | |
4412 | "on the adapter %s\n", | |
4413 | zfcp_get_busid_by_adapter(adapter)); | |
4414 | break; | |
4415 | ||
4416 | case FSF_OPERATION_PARTIALLY_SUCCESSFUL: | |
1da177e4 LT |
4417 | if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE) { |
4418 | switch (header->fsf_status_qual.word[0]) { | |
4419 | ||
6f71d9bc | 4420 | case FSF_SQ_CFDC_HARDENED_ON_SE: |
4421 | ZFCP_LOG_NORMAL( | |
4422 | "CFDC on the adapter %s has being " | |
4423 | "hardened on primary and secondary SE\n", | |
4424 | zfcp_get_busid_by_adapter(adapter)); | |
4425 | break; | |
4426 | ||
1da177e4 LT |
4427 | case FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE: |
4428 | ZFCP_LOG_NORMAL( | |
4429 | "CFDC of the adapter %s could not " | |
4430 | "be saved on the SE\n", | |
4431 | zfcp_get_busid_by_adapter(adapter)); | |
4432 | break; | |
4433 | ||
4434 | case FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE2: | |
4435 | ZFCP_LOG_NORMAL( | |
4436 | "CFDC of the adapter %s could not " | |
4437 | "be copied to the secondary SE\n", | |
4438 | zfcp_get_busid_by_adapter(adapter)); | |
4439 | break; | |
4440 | ||
4441 | default: | |
4442 | ZFCP_LOG_NORMAL( | |
4443 | "CFDC could not be hardened " | |
4444 | "on the adapter %s\n", | |
4445 | zfcp_get_busid_by_adapter(adapter)); | |
4446 | } | |
4447 | } | |
4448 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4449 | retval = -EAGAIN; | |
4450 | break; | |
4451 | ||
4452 | case FSF_AUTHORIZATION_FAILURE: | |
1da177e4 LT |
4453 | ZFCP_LOG_NORMAL( |
4454 | "Adapter %s does not accept privileged commands\n", | |
4455 | zfcp_get_busid_by_adapter(adapter)); | |
4456 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4457 | retval = -EACCES; | |
4458 | break; | |
4459 | ||
4460 | case FSF_CFDC_ERROR_DETECTED: | |
1da177e4 LT |
4461 | ZFCP_LOG_NORMAL( |
4462 | "Error at position %d in the CFDC, " | |
4463 | "CFDC is discarded by the adapter %s\n", | |
4464 | header->fsf_status_qual.word[0], | |
4465 | zfcp_get_busid_by_adapter(adapter)); | |
4466 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4467 | retval = -EPERM; | |
4468 | break; | |
4469 | ||
4470 | case FSF_CONTROL_FILE_UPDATE_ERROR: | |
1da177e4 LT |
4471 | ZFCP_LOG_NORMAL( |
4472 | "Adapter %s cannot harden the control file, " | |
4473 | "file is discarded\n", | |
4474 | zfcp_get_busid_by_adapter(adapter)); | |
4475 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4476 | retval = -EIO; | |
4477 | break; | |
4478 | ||
4479 | case FSF_CONTROL_FILE_TOO_LARGE: | |
1da177e4 LT |
4480 | ZFCP_LOG_NORMAL( |
4481 | "Control file is too large, file is discarded " | |
4482 | "by the adapter %s\n", | |
4483 | zfcp_get_busid_by_adapter(adapter)); | |
4484 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4485 | retval = -EIO; | |
4486 | break; | |
4487 | ||
4488 | case FSF_ACCESS_CONFLICT_DETECTED: | |
1da177e4 LT |
4489 | if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE) |
4490 | ZFCP_LOG_NORMAL( | |
4491 | "CFDC has been discarded by the adapter %s, " | |
4492 | "because activation would impact " | |
4493 | "%d active connection(s)\n", | |
4494 | zfcp_get_busid_by_adapter(adapter), | |
4495 | header->fsf_status_qual.word[0]); | |
4496 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4497 | retval = -EIO; | |
4498 | break; | |
4499 | ||
4500 | case FSF_CONFLICTS_OVERRULED: | |
1da177e4 LT |
4501 | if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE) |
4502 | ZFCP_LOG_NORMAL( | |
4503 | "CFDC has been activated on the adapter %s, " | |
4504 | "but activation has impacted " | |
4505 | "%d active connection(s)\n", | |
4506 | zfcp_get_busid_by_adapter(adapter), | |
4507 | header->fsf_status_qual.word[0]); | |
4508 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4509 | retval = -EIO; | |
4510 | break; | |
4511 | ||
4512 | case FSF_UNKNOWN_OP_SUBTYPE: | |
1da177e4 LT |
4513 | ZFCP_LOG_NORMAL("unknown operation subtype (adapter: %s, " |
4514 | "op_subtype=0x%x)\n", | |
4515 | zfcp_get_busid_by_adapter(adapter), | |
4516 | bottom->operation_subtype); | |
4517 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4518 | retval = -EINVAL; | |
4519 | break; | |
4520 | ||
4521 | case FSF_INVALID_COMMAND_OPTION: | |
1da177e4 LT |
4522 | ZFCP_LOG_NORMAL( |
4523 | "Invalid option 0x%x has been specified " | |
4524 | "in QTCB bottom sent to the adapter %s\n", | |
4525 | bottom->option, | |
4526 | zfcp_get_busid_by_adapter(adapter)); | |
4527 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4528 | retval = -EINVAL; | |
4529 | break; | |
4530 | ||
4531 | default: | |
4532 | ZFCP_LOG_NORMAL( | |
4533 | "bug: An unknown/unexpected FSF status 0x%08x " | |
4534 | "was presented on the adapter %s\n", | |
4535 | header->fsf_status, | |
4536 | zfcp_get_busid_by_adapter(adapter)); | |
4537 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_sq_inval"); | |
4538 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
4539 | &header->fsf_status_qual.word[0], sizeof(u32)); | |
4540 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4541 | retval = -EINVAL; | |
4542 | break; | |
4543 | } | |
4544 | ||
4545 | skip_fsfstatus: | |
4546 | return retval; | |
4547 | } | |
4548 | ||
1da177e4 LT |
4549 | static inline int |
4550 | zfcp_fsf_req_sbal_check(unsigned long *flags, | |
4551 | struct zfcp_qdio_queue *queue, int needed) | |
4552 | { | |
4553 | write_lock_irqsave(&queue->queue_lock, *flags); | |
4554 | if (likely(atomic_read(&queue->free_count) >= needed)) | |
4555 | return 1; | |
4556 | write_unlock_irqrestore(&queue->queue_lock, *flags); | |
4557 | return 0; | |
4558 | } | |
4559 | ||
4560 | /* | |
4561 | * set qtcb pointer in fsf_req and initialize QTCB | |
4562 | */ | |
4d284cac | 4563 | static void |
8a36e453 | 4564 | zfcp_fsf_req_qtcb_init(struct zfcp_fsf_req *fsf_req) |
1da177e4 LT |
4565 | { |
4566 | if (likely(fsf_req->qtcb != NULL)) { | |
fea9d6c7 VS |
4567 | fsf_req->qtcb->prefix.req_seq_no = |
4568 | fsf_req->adapter->fsf_req_seq_no; | |
4569 | fsf_req->qtcb->prefix.req_id = fsf_req->req_id; | |
1da177e4 | 4570 | fsf_req->qtcb->prefix.ulp_info = ZFCP_ULP_INFO_VERSION; |
fea9d6c7 VS |
4571 | fsf_req->qtcb->prefix.qtcb_type = |
4572 | fsf_qtcb_type[fsf_req->fsf_command]; | |
1da177e4 | 4573 | fsf_req->qtcb->prefix.qtcb_version = ZFCP_QTCB_VERSION; |
fea9d6c7 | 4574 | fsf_req->qtcb->header.req_handle = fsf_req->req_id; |
8a36e453 | 4575 | fsf_req->qtcb->header.fsf_command = fsf_req->fsf_command; |
1da177e4 LT |
4576 | } |
4577 | } | |
4578 | ||
4579 | /** | |
4580 | * zfcp_fsf_req_sbal_get - try to get one SBAL in the request queue | |
4581 | * @adapter: adapter for which request queue is examined | |
4582 | * @req_flags: flags indicating whether to wait for needed SBAL or not | |
4583 | * @lock_flags: lock_flags if queue_lock is taken | |
4584 | * Return: 0 on success, otherwise -EIO, or -ERESTARTSYS | |
4585 | * Locks: lock adapter->request_queue->queue_lock on success | |
4586 | */ | |
4587 | static int | |
4588 | zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter, int req_flags, | |
4589 | unsigned long *lock_flags) | |
4590 | { | |
4591 | long ret; | |
4592 | struct zfcp_qdio_queue *req_queue = &adapter->request_queue; | |
4593 | ||
4594 | if (unlikely(req_flags & ZFCP_WAIT_FOR_SBAL)) { | |
4595 | ret = wait_event_interruptible_timeout(adapter->request_wq, | |
4596 | zfcp_fsf_req_sbal_check(lock_flags, req_queue, 1), | |
4597 | ZFCP_SBAL_TIMEOUT); | |
4598 | if (ret < 0) | |
4599 | return ret; | |
4600 | if (!ret) | |
4601 | return -EIO; | |
4602 | } else if (!zfcp_fsf_req_sbal_check(lock_flags, req_queue, 1)) | |
4603 | return -EIO; | |
4604 | ||
4605 | return 0; | |
4606 | } | |
4607 | ||
4608 | /* | |
4609 | * function: zfcp_fsf_req_create | |
4610 | * | |
4611 | * purpose: create an FSF request at the specified adapter and | |
4612 | * setup common fields | |
4613 | * | |
4614 | * returns: -ENOMEM if there was insufficient memory for a request | |
4615 | * -EIO if no qdio buffers could be allocate to the request | |
4616 | * -EINVAL/-EPERM on bug conditions in req_dequeue | |
4617 | * 0 in success | |
4618 | * | |
4619 | * note: The created request is returned by reference. | |
4620 | * | |
4621 | * locks: lock of concerned request queue must not be held, | |
4622 | * but is held on completion (write, irqsave) | |
4623 | */ | |
4624 | int | |
4625 | zfcp_fsf_req_create(struct zfcp_adapter *adapter, u32 fsf_cmd, int req_flags, | |
4626 | mempool_t *pool, unsigned long *lock_flags, | |
4627 | struct zfcp_fsf_req **fsf_req_p) | |
4628 | { | |
4629 | volatile struct qdio_buffer_element *sbale; | |
4630 | struct zfcp_fsf_req *fsf_req = NULL; | |
4631 | int ret = 0; | |
4632 | struct zfcp_qdio_queue *req_queue = &adapter->request_queue; | |
4633 | ||
4634 | /* allocate new FSF request */ | |
4635 | fsf_req = zfcp_fsf_req_alloc(pool, req_flags); | |
4636 | if (unlikely(NULL == fsf_req)) { | |
4637 | ZFCP_LOG_DEBUG("error: Could not put an FSF request into" | |
4638 | "the outbound (send) queue.\n"); | |
4639 | ret = -ENOMEM; | |
4640 | goto failed_fsf_req; | |
4641 | } | |
4642 | ||
8a36e453 MS |
4643 | fsf_req->adapter = adapter; |
4644 | fsf_req->fsf_command = fsf_cmd; | |
fea9d6c7 VS |
4645 | INIT_LIST_HEAD(&fsf_req->list); |
4646 | ||
4eff4a36 AH |
4647 | /* this is serialized (we are holding req_queue-lock of adapter */ |
4648 | if (adapter->req_no == 0) | |
4649 | adapter->req_no++; | |
fea9d6c7 | 4650 | fsf_req->req_id = adapter->req_no++; |
8a36e453 | 4651 | |
2abbe866 AH |
4652 | init_timer(&fsf_req->timer); |
4653 | zfcp_fsf_req_qtcb_init(fsf_req); | |
1da177e4 LT |
4654 | |
4655 | /* initialize waitqueue which may be used to wait on | |
4656 | this request completion */ | |
4657 | init_waitqueue_head(&fsf_req->completion_wq); | |
4658 | ||
4659 | ret = zfcp_fsf_req_sbal_get(adapter, req_flags, lock_flags); | |
4660 | if(ret < 0) { | |
4661 | goto failed_sbals; | |
4662 | } | |
4663 | ||
4664 | /* | |
4665 | * We hold queue_lock here. Check if QDIOUP is set and let request fail | |
4666 | * if it is not set (see also *_open_qdio and *_close_qdio). | |
4667 | */ | |
4668 | ||
4669 | if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)) { | |
4670 | write_unlock_irqrestore(&req_queue->queue_lock, *lock_flags); | |
4671 | ret = -EIO; | |
4672 | goto failed_sbals; | |
4673 | } | |
4674 | ||
8a36e453 MS |
4675 | if (fsf_req->qtcb) { |
4676 | fsf_req->seq_no = adapter->fsf_req_seq_no; | |
4677 | fsf_req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; | |
4678 | } | |
1da177e4 LT |
4679 | fsf_req->sbal_number = 1; |
4680 | fsf_req->sbal_first = req_queue->free_index; | |
4681 | fsf_req->sbal_curr = req_queue->free_index; | |
4682 | fsf_req->sbale_curr = 1; | |
4683 | ||
4684 | if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP)) { | |
4685 | fsf_req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; | |
4686 | } | |
4687 | ||
4688 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
4689 | ||
4690 | /* setup common SBALE fields */ | |
fea9d6c7 | 4691 | sbale[0].addr = (void *) fsf_req->req_id; |
1da177e4 LT |
4692 | sbale[0].flags |= SBAL_FLAGS0_COMMAND; |
4693 | if (likely(fsf_req->qtcb != NULL)) { | |
4694 | sbale[1].addr = (void *) fsf_req->qtcb; | |
4695 | sbale[1].length = sizeof(struct fsf_qtcb); | |
4696 | } | |
4697 | ||
4698 | ZFCP_LOG_TRACE("got %i free BUFFERs starting at index %i\n", | |
4699 | fsf_req->sbal_number, fsf_req->sbal_first); | |
4700 | ||
4701 | goto success; | |
4702 | ||
4703 | failed_sbals: | |
4704 | /* dequeue new FSF request previously enqueued */ | |
4705 | zfcp_fsf_req_free(fsf_req); | |
4706 | fsf_req = NULL; | |
4707 | ||
4708 | failed_fsf_req: | |
4709 | write_lock_irqsave(&req_queue->queue_lock, *lock_flags); | |
4710 | success: | |
4711 | *fsf_req_p = fsf_req; | |
4712 | return ret; | |
4713 | } | |
4714 | ||
4715 | /* | |
4716 | * function: zfcp_fsf_req_send | |
4717 | * | |
4718 | * purpose: start transfer of FSF request via QDIO | |
4719 | * | |
4720 | * returns: 0 - request transfer succesfully started | |
4721 | * !0 - start of request transfer failed | |
4722 | */ | |
2abbe866 | 4723 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *fsf_req) |
1da177e4 LT |
4724 | { |
4725 | struct zfcp_adapter *adapter; | |
4726 | struct zfcp_qdio_queue *req_queue; | |
4727 | volatile struct qdio_buffer_element *sbale; | |
8a36e453 | 4728 | int inc_seq_no; |
1da177e4 | 4729 | int new_distance_from_int; |
fea9d6c7 | 4730 | u64 dbg_tmp[2]; |
1da177e4 LT |
4731 | int retval = 0; |
4732 | ||
4733 | adapter = fsf_req->adapter; | |
4734 | req_queue = &adapter->request_queue, | |
4735 | ||
4736 | ||
4737 | /* FIXME(debug): remove it later */ | |
4738 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_first, 0); | |
4739 | ZFCP_LOG_DEBUG("SBALE0 flags=0x%x\n", sbale[0].flags); | |
4740 | ZFCP_LOG_TRACE("HEX DUMP OF SBALE1 PAYLOAD:\n"); | |
4741 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, (char *) sbale[1].addr, | |
4742 | sbale[1].length); | |
4743 | ||
fea9d6c7 VS |
4744 | /* put allocated FSF request into hash table */ |
4745 | spin_lock(&adapter->req_list_lock); | |
4746 | zfcp_reqlist_add(adapter, fsf_req); | |
4747 | spin_unlock(&adapter->req_list_lock); | |
1da177e4 | 4748 | |
8a36e453 MS |
4749 | inc_seq_no = (fsf_req->qtcb != NULL); |
4750 | ||
1da177e4 LT |
4751 | ZFCP_LOG_TRACE("request queue of adapter %s: " |
4752 | "next free SBAL is %i, %i free SBALs\n", | |
4753 | zfcp_get_busid_by_adapter(adapter), | |
4754 | req_queue->free_index, | |
4755 | atomic_read(&req_queue->free_count)); | |
4756 | ||
4757 | ZFCP_LOG_DEBUG("calling do_QDIO adapter %s, flags=0x%x, queue_no=%i, " | |
4758 | "index_in_queue=%i, count=%i, buffers=%p\n", | |
4759 | zfcp_get_busid_by_adapter(adapter), | |
4760 | QDIO_FLAG_SYNC_OUTPUT, | |
4761 | 0, fsf_req->sbal_first, fsf_req->sbal_number, | |
4762 | &req_queue->buffer[fsf_req->sbal_first]); | |
4763 | ||
4764 | /* | |
4765 | * adjust the number of free SBALs in request queue as well as | |
4766 | * position of first one | |
4767 | */ | |
4768 | atomic_sub(fsf_req->sbal_number, &req_queue->free_count); | |
4769 | ZFCP_LOG_TRACE("free_count=%d\n", atomic_read(&req_queue->free_count)); | |
4770 | req_queue->free_index += fsf_req->sbal_number; /* increase */ | |
4771 | req_queue->free_index %= QDIO_MAX_BUFFERS_PER_Q; /* wrap if needed */ | |
4772 | new_distance_from_int = zfcp_qdio_determine_pci(req_queue, fsf_req); | |
4773 | ||
8a36e453 MS |
4774 | fsf_req->issued = get_clock(); |
4775 | ||
1da177e4 LT |
4776 | retval = do_QDIO(adapter->ccw_device, |
4777 | QDIO_FLAG_SYNC_OUTPUT, | |
4778 | 0, fsf_req->sbal_first, fsf_req->sbal_number, NULL); | |
4779 | ||
fea9d6c7 VS |
4780 | dbg_tmp[0] = (unsigned long) sbale[0].addr; |
4781 | dbg_tmp[1] = (u64) retval; | |
4782 | debug_event(adapter->erp_dbf, 4, (void *) dbg_tmp, 16); | |
4783 | ||
1da177e4 LT |
4784 | if (unlikely(retval)) { |
4785 | /* Queues are down..... */ | |
4786 | retval = -EIO; | |
2abbe866 | 4787 | del_timer(&fsf_req->timer); |
fea9d6c7 VS |
4788 | spin_lock(&adapter->req_list_lock); |
4789 | zfcp_reqlist_remove(adapter, fsf_req->req_id); | |
4790 | spin_unlock(&adapter->req_list_lock); | |
4791 | /* undo changes in request queue made for this request */ | |
1da177e4 LT |
4792 | zfcp_qdio_zero_sbals(req_queue->buffer, |
4793 | fsf_req->sbal_first, fsf_req->sbal_number); | |
4794 | atomic_add(fsf_req->sbal_number, &req_queue->free_count); | |
fea9d6c7 | 4795 | req_queue->free_index -= fsf_req->sbal_number; |
1da177e4 LT |
4796 | req_queue->free_index += QDIO_MAX_BUFFERS_PER_Q; |
4797 | req_queue->free_index %= QDIO_MAX_BUFFERS_PER_Q; /* wrap */ | |
fea9d6c7 | 4798 | zfcp_erp_adapter_reopen(adapter, 0); |
1da177e4 LT |
4799 | } else { |
4800 | req_queue->distance_from_int = new_distance_from_int; | |
4801 | /* | |
4802 | * increase FSF sequence counter - | |
4803 | * this must only be done for request successfully enqueued to | |
4804 | * QDIO this rejected requests may be cleaned up by calling | |
4805 | * routines resulting in missing sequence counter values | |
4806 | * otherwise, | |
4807 | */ | |
8a36e453 | 4808 | |
1da177e4 | 4809 | /* Don't increase for unsolicited status */ |
8a36e453 | 4810 | if (inc_seq_no) |
1da177e4 | 4811 | adapter->fsf_req_seq_no++; |
8a36e453 | 4812 | |
1da177e4 | 4813 | /* count FSF requests pending */ |
fea9d6c7 | 4814 | atomic_inc(&adapter->reqs_active); |
1da177e4 LT |
4815 | } |
4816 | return retval; | |
4817 | } | |
4818 | ||
1da177e4 | 4819 | #undef ZFCP_LOG_AREA |