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) */ | |
862794fa | 302 | if (likely(qtcb->header.log_length)) { |
1da177e4 | 303 | /* do not trust them ;-) */ |
862794fa HC |
304 | if (unlikely(qtcb->header.log_start > |
305 | sizeof(struct fsf_qtcb))) { | |
1da177e4 LT |
306 | ZFCP_LOG_NORMAL |
307 | ("bug: ULP (FSF logging) log data starts " | |
308 | "beyond end of packet header. Ignored. " | |
309 | "(start=%i, size=%li)\n", | |
8a36e453 | 310 | qtcb->header.log_start, |
1da177e4 LT |
311 | sizeof(struct fsf_qtcb)); |
312 | goto forget_log; | |
313 | } | |
862794fa HC |
314 | if (unlikely((size_t) (qtcb->header.log_start + |
315 | qtcb->header.log_length) > | |
316 | sizeof(struct fsf_qtcb))) { | |
1da177e4 LT |
317 | ZFCP_LOG_NORMAL("bug: ULP (FSF logging) log data ends " |
318 | "beyond end of packet header. Ignored. " | |
319 | "(start=%i, length=%i, size=%li)\n", | |
8a36e453 MS |
320 | qtcb->header.log_start, |
321 | qtcb->header.log_length, | |
1da177e4 LT |
322 | sizeof(struct fsf_qtcb)); |
323 | goto forget_log; | |
324 | } | |
325 | ZFCP_LOG_TRACE("ULP log data: \n"); | |
326 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, | |
8a36e453 MS |
327 | (char *) qtcb + qtcb->header.log_start, |
328 | qtcb->header.log_length); | |
1da177e4 LT |
329 | } |
330 | forget_log: | |
331 | ||
332 | /* evaluate FSF Protocol Status */ | |
8a36e453 | 333 | switch (qtcb->prefix.prot_status) { |
1da177e4 LT |
334 | |
335 | case FSF_PROT_GOOD: | |
1da177e4 | 336 | case FSF_PROT_FSF_STATUS_PRESENTED: |
1da177e4 LT |
337 | break; |
338 | ||
339 | case FSF_PROT_QTCB_VERSION_ERROR: | |
1da177e4 LT |
340 | ZFCP_LOG_NORMAL("error: The adapter %s contains " |
341 | "microcode of version 0x%x, the device driver " | |
342 | "only supports 0x%x. Aborting.\n", | |
343 | zfcp_get_busid_by_adapter(adapter), | |
8a36e453 MS |
344 | prot_status_qual->version_error.fsf_version, |
345 | ZFCP_QTCB_VERSION); | |
1da177e4 | 346 | zfcp_erp_adapter_shutdown(adapter, 0); |
1da177e4 LT |
347 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
348 | break; | |
349 | ||
350 | case FSF_PROT_SEQ_NUMB_ERROR: | |
1da177e4 LT |
351 | ZFCP_LOG_NORMAL("bug: Sequence number mismatch between " |
352 | "driver (0x%x) and adapter %s (0x%x). " | |
353 | "Restarting all operations on this adapter.\n", | |
8a36e453 | 354 | qtcb->prefix.req_seq_no, |
1da177e4 | 355 | zfcp_get_busid_by_adapter(adapter), |
8a36e453 | 356 | prot_status_qual->sequence_error.exp_req_seq_no); |
1da177e4 | 357 | zfcp_erp_adapter_reopen(adapter, 0); |
1da177e4 LT |
358 | fsf_req->status |= ZFCP_STATUS_FSFREQ_RETRY; |
359 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
360 | break; | |
361 | ||
362 | case FSF_PROT_UNSUPP_QTCB_TYPE: | |
1da177e4 LT |
363 | ZFCP_LOG_NORMAL("error: Packet header type used by the " |
364 | "device driver is incompatible with " | |
365 | "that used on adapter %s. " | |
366 | "Stopping all operations on this adapter.\n", | |
367 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 | 368 | zfcp_erp_adapter_shutdown(adapter, 0); |
1da177e4 LT |
369 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
370 | break; | |
371 | ||
372 | case FSF_PROT_HOST_CONNECTION_INITIALIZING: | |
1da177e4 LT |
373 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
374 | atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT, | |
375 | &(adapter->status)); | |
1da177e4 LT |
376 | break; |
377 | ||
378 | case FSF_PROT_DUPLICATE_REQUEST_ID: | |
1da177e4 LT |
379 | ZFCP_LOG_NORMAL("bug: The request identifier 0x%Lx " |
380 | "to the adapter %s is ambiguous. " | |
aef4a983 MS |
381 | "Stopping all operations on this adapter.\n", |
382 | *(unsigned long long*) | |
383 | (&qtcb->bottom.support.req_handle), | |
1da177e4 | 384 | zfcp_get_busid_by_adapter(adapter)); |
1da177e4 | 385 | zfcp_erp_adapter_shutdown(adapter, 0); |
1da177e4 LT |
386 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
387 | break; | |
388 | ||
389 | case FSF_PROT_LINK_DOWN: | |
aef4a983 MS |
390 | zfcp_fsf_link_down_info_eval(adapter, |
391 | &prot_status_qual->link_down_info); | |
2f8f3ed5 | 392 | zfcp_erp_adapter_reopen(adapter, 0); |
1da177e4 LT |
393 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
394 | break; | |
395 | ||
396 | case FSF_PROT_REEST_QUEUE: | |
8a36e453 | 397 | ZFCP_LOG_NORMAL("The local link to adapter with " |
1da177e4 LT |
398 | "%s was re-plugged. " |
399 | "Re-starting operations on this adapter.\n", | |
400 | zfcp_get_busid_by_adapter(adapter)); | |
401 | /* All ports should be marked as ready to run again */ | |
402 | zfcp_erp_modify_adapter_status(adapter, | |
403 | ZFCP_STATUS_COMMON_RUNNING, | |
404 | ZFCP_SET); | |
405 | zfcp_erp_adapter_reopen(adapter, | |
406 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | |
407 | | ZFCP_STATUS_COMMON_ERP_FAILED); | |
1da177e4 LT |
408 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
409 | break; | |
410 | ||
411 | case FSF_PROT_ERROR_STATE: | |
1da177e4 LT |
412 | ZFCP_LOG_NORMAL("error: The adapter %s " |
413 | "has entered the error state. " | |
414 | "Restarting all operations on this " | |
415 | "adapter.\n", | |
416 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 | 417 | zfcp_erp_adapter_reopen(adapter, 0); |
1da177e4 LT |
418 | fsf_req->status |= ZFCP_STATUS_FSFREQ_RETRY; |
419 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
420 | break; | |
421 | ||
422 | default: | |
423 | ZFCP_LOG_NORMAL("bug: Transfer protocol status information " | |
424 | "provided by the adapter %s " | |
425 | "is not compatible with the device driver. " | |
426 | "Stopping all operations on this adapter. " | |
427 | "(debug info 0x%x).\n", | |
428 | zfcp_get_busid_by_adapter(adapter), | |
8a36e453 | 429 | qtcb->prefix.prot_status); |
1da177e4 LT |
430 | zfcp_erp_adapter_shutdown(adapter, 0); |
431 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
432 | } | |
433 | ||
434 | skip_protstatus: | |
435 | /* | |
436 | * always call specific handlers to give them a chance to do | |
437 | * something meaningful even in error cases | |
438 | */ | |
439 | zfcp_fsf_fsfstatus_eval(fsf_req); | |
440 | return retval; | |
441 | } | |
442 | ||
443 | /* | |
444 | * function: zfcp_fsf_fsfstatus_eval | |
445 | * | |
446 | * purpose: evaluates FSF status of completed FSF request | |
447 | * and acts accordingly | |
448 | * | |
449 | * returns: | |
450 | */ | |
451 | static int | |
452 | zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *fsf_req) | |
453 | { | |
454 | int retval = 0; | |
455 | ||
456 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
457 | goto skip_fsfstatus; | |
458 | } | |
459 | ||
460 | /* evaluate FSF Status */ | |
461 | switch (fsf_req->qtcb->header.fsf_status) { | |
462 | case FSF_UNKNOWN_COMMAND: | |
1da177e4 LT |
463 | ZFCP_LOG_NORMAL("bug: Command issued by the device driver is " |
464 | "not known by the adapter %s " | |
465 | "Stopping all operations on this adapter. " | |
466 | "(debug info 0x%x).\n", | |
467 | zfcp_get_busid_by_adapter(fsf_req->adapter), | |
468 | fsf_req->qtcb->header.fsf_command); | |
1da177e4 | 469 | zfcp_erp_adapter_shutdown(fsf_req->adapter, 0); |
1da177e4 LT |
470 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
471 | break; | |
472 | ||
473 | case FSF_FCP_RSP_AVAILABLE: | |
1da177e4 LT |
474 | ZFCP_LOG_DEBUG("FCP Sense data will be presented to the " |
475 | "SCSI stack.\n"); | |
1da177e4 LT |
476 | break; |
477 | ||
478 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
479 | zfcp_fsf_fsfstatus_qual_eval(fsf_req); |
480 | break; | |
1da177e4 LT |
481 | } |
482 | ||
483 | skip_fsfstatus: | |
484 | /* | |
485 | * always call specific handlers to give them a chance to do | |
486 | * something meaningful even in error cases | |
487 | */ | |
488 | zfcp_fsf_req_dispatch(fsf_req); | |
489 | ||
490 | return retval; | |
491 | } | |
492 | ||
493 | /* | |
494 | * function: zfcp_fsf_fsfstatus_qual_eval | |
495 | * | |
496 | * purpose: evaluates FSF status-qualifier of completed FSF request | |
497 | * and acts accordingly | |
498 | * | |
499 | * returns: | |
500 | */ | |
501 | static int | |
502 | zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *fsf_req) | |
503 | { | |
504 | int retval = 0; | |
505 | ||
506 | switch (fsf_req->qtcb->header.fsf_status_qual.word[0]) { | |
507 | case FSF_SQ_FCP_RSP_AVAILABLE: | |
1da177e4 LT |
508 | break; |
509 | case FSF_SQ_RETRY_IF_POSSIBLE: | |
1da177e4 | 510 | /* The SCSI-stack may now issue retries or escalate */ |
1da177e4 LT |
511 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
512 | break; | |
513 | case FSF_SQ_COMMAND_ABORTED: | |
1da177e4 | 514 | /* Carry the aborted state on to upper layer */ |
1da177e4 LT |
515 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTED; |
516 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
517 | break; | |
518 | case FSF_SQ_NO_RECOM: | |
1da177e4 LT |
519 | ZFCP_LOG_NORMAL("bug: No recommendation could be given for a" |
520 | "problem on the adapter %s " | |
521 | "Stopping all operations on this adapter. ", | |
522 | zfcp_get_busid_by_adapter(fsf_req->adapter)); | |
523 | zfcp_erp_adapter_shutdown(fsf_req->adapter, 0); | |
1da177e4 LT |
524 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
525 | break; | |
526 | case FSF_SQ_ULP_PROGRAMMING_ERROR: | |
1da177e4 LT |
527 | ZFCP_LOG_NORMAL("error: not enough SBALs for data transfer " |
528 | "(adapter %s)\n", | |
529 | zfcp_get_busid_by_adapter(fsf_req->adapter)); | |
1da177e4 LT |
530 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
531 | break; | |
532 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
533 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
534 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
535 | /* dealt with in the respective functions */ | |
536 | break; | |
537 | default: | |
538 | ZFCP_LOG_NORMAL("bug: Additional status info could " | |
539 | "not be interpreted properly.\n"); | |
540 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL, | |
541 | (char *) &fsf_req->qtcb->header.fsf_status_qual, | |
542 | sizeof (union fsf_status_qual)); | |
1da177e4 LT |
543 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
544 | break; | |
545 | } | |
546 | ||
547 | return retval; | |
548 | } | |
549 | ||
aef4a983 MS |
550 | /** |
551 | * zfcp_fsf_link_down_info_eval - evaluate link down information block | |
552 | */ | |
553 | static void | |
554 | zfcp_fsf_link_down_info_eval(struct zfcp_adapter *adapter, | |
555 | struct fsf_link_down_info *link_down) | |
556 | { | |
ee69ab7a MS |
557 | if (atomic_test_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, |
558 | &adapter->status)) | |
559 | return; | |
560 | ||
561 | atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status); | |
562 | ||
2f8f3ed5 AH |
563 | if (link_down == NULL) |
564 | goto out; | |
ee69ab7a | 565 | |
aef4a983 MS |
566 | switch (link_down->error_code) { |
567 | case FSF_PSQ_LINK_NO_LIGHT: | |
568 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
569 | "(no light detected)\n", | |
570 | zfcp_get_busid_by_adapter(adapter)); | |
571 | break; | |
572 | case FSF_PSQ_LINK_WRAP_PLUG: | |
573 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
574 | "(wrap plug detected)\n", | |
575 | zfcp_get_busid_by_adapter(adapter)); | |
576 | break; | |
577 | case FSF_PSQ_LINK_NO_FCP: | |
578 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
579 | "(adjacent node on link does not support FCP)\n", | |
580 | zfcp_get_busid_by_adapter(adapter)); | |
581 | break; | |
582 | case FSF_PSQ_LINK_FIRMWARE_UPDATE: | |
583 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
584 | "(firmware update in progress)\n", | |
585 | zfcp_get_busid_by_adapter(adapter)); | |
586 | break; | |
587 | case FSF_PSQ_LINK_INVALID_WWPN: | |
588 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
589 | "(duplicate or invalid WWPN detected)\n", | |
590 | zfcp_get_busid_by_adapter(adapter)); | |
591 | break; | |
592 | case FSF_PSQ_LINK_NO_NPIV_SUPPORT: | |
593 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
594 | "(no support for NPIV by Fabric)\n", | |
595 | zfcp_get_busid_by_adapter(adapter)); | |
596 | break; | |
597 | case FSF_PSQ_LINK_NO_FCP_RESOURCES: | |
598 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
599 | "(out of resource in FCP daughtercard)\n", | |
600 | zfcp_get_busid_by_adapter(adapter)); | |
601 | break; | |
602 | case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: | |
603 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
604 | "(out of resource in Fabric)\n", | |
605 | zfcp_get_busid_by_adapter(adapter)); | |
606 | break; | |
607 | case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: | |
608 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
609 | "(unable to Fabric login)\n", | |
610 | zfcp_get_busid_by_adapter(adapter)); | |
611 | break; | |
612 | case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: | |
613 | ZFCP_LOG_NORMAL("WWPN assignment file corrupted on adapter %s\n", | |
614 | zfcp_get_busid_by_adapter(adapter)); | |
615 | break; | |
616 | case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: | |
617 | ZFCP_LOG_NORMAL("Mode table corrupted on adapter %s\n", | |
618 | zfcp_get_busid_by_adapter(adapter)); | |
619 | break; | |
620 | case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: | |
621 | ZFCP_LOG_NORMAL("No WWPN for assignment table on adapter %s\n", | |
622 | zfcp_get_busid_by_adapter(adapter)); | |
623 | break; | |
624 | default: | |
625 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
626 | "(warning: unknown reason code %d)\n", | |
627 | zfcp_get_busid_by_adapter(adapter), | |
628 | link_down->error_code); | |
629 | } | |
630 | ||
631 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) | |
632 | ZFCP_LOG_DEBUG("Debug information to link down: " | |
633 | "primary_status=0x%02x " | |
634 | "ioerr_code=0x%02x " | |
635 | "action_code=0x%02x " | |
636 | "reason_code=0x%02x " | |
637 | "explanation_code=0x%02x " | |
638 | "vendor_specific_code=0x%02x\n", | |
639 | link_down->primary_status, | |
640 | link_down->ioerr_code, | |
641 | link_down->action_code, | |
642 | link_down->reason_code, | |
643 | link_down->explanation_code, | |
644 | link_down->vendor_specific_code); | |
645 | ||
2f8f3ed5 AH |
646 | out: |
647 | zfcp_erp_adapter_failed(adapter); | |
aef4a983 MS |
648 | } |
649 | ||
1da177e4 LT |
650 | /* |
651 | * function: zfcp_fsf_req_dispatch | |
652 | * | |
653 | * purpose: calls the appropriate command specific handler | |
654 | * | |
655 | * returns: | |
656 | */ | |
657 | static int | |
658 | zfcp_fsf_req_dispatch(struct zfcp_fsf_req *fsf_req) | |
659 | { | |
660 | struct zfcp_erp_action *erp_action = fsf_req->erp_action; | |
661 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
662 | int retval = 0; | |
663 | ||
1da177e4 LT |
664 | |
665 | switch (fsf_req->fsf_command) { | |
666 | ||
667 | case FSF_QTCB_FCP_CMND: | |
1da177e4 LT |
668 | zfcp_fsf_send_fcp_command_handler(fsf_req); |
669 | break; | |
670 | ||
671 | case FSF_QTCB_ABORT_FCP_CMND: | |
1da177e4 LT |
672 | zfcp_fsf_abort_fcp_command_handler(fsf_req); |
673 | break; | |
674 | ||
675 | case FSF_QTCB_SEND_GENERIC: | |
1da177e4 LT |
676 | zfcp_fsf_send_ct_handler(fsf_req); |
677 | break; | |
678 | ||
679 | case FSF_QTCB_OPEN_PORT_WITH_DID: | |
1da177e4 LT |
680 | zfcp_fsf_open_port_handler(fsf_req); |
681 | break; | |
682 | ||
683 | case FSF_QTCB_OPEN_LUN: | |
1da177e4 LT |
684 | zfcp_fsf_open_unit_handler(fsf_req); |
685 | break; | |
686 | ||
687 | case FSF_QTCB_CLOSE_LUN: | |
1da177e4 LT |
688 | zfcp_fsf_close_unit_handler(fsf_req); |
689 | break; | |
690 | ||
691 | case FSF_QTCB_CLOSE_PORT: | |
1da177e4 LT |
692 | zfcp_fsf_close_port_handler(fsf_req); |
693 | break; | |
694 | ||
695 | case FSF_QTCB_CLOSE_PHYSICAL_PORT: | |
1da177e4 LT |
696 | zfcp_fsf_close_physical_port_handler(fsf_req); |
697 | break; | |
698 | ||
699 | case FSF_QTCB_EXCHANGE_CONFIG_DATA: | |
1da177e4 LT |
700 | zfcp_fsf_exchange_config_data_handler(fsf_req); |
701 | break; | |
702 | ||
703 | case FSF_QTCB_EXCHANGE_PORT_DATA: | |
1da177e4 LT |
704 | zfcp_fsf_exchange_port_data_handler(fsf_req); |
705 | break; | |
706 | ||
707 | case FSF_QTCB_SEND_ELS: | |
1da177e4 LT |
708 | zfcp_fsf_send_els_handler(fsf_req); |
709 | break; | |
710 | ||
711 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
1da177e4 LT |
712 | zfcp_fsf_control_file_handler(fsf_req); |
713 | break; | |
714 | ||
715 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
1da177e4 LT |
716 | zfcp_fsf_control_file_handler(fsf_req); |
717 | break; | |
718 | ||
719 | default: | |
1da177e4 LT |
720 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
721 | ZFCP_LOG_NORMAL("bug: Command issued by the device driver is " | |
722 | "not supported by the adapter %s\n", | |
8a36e453 | 723 | zfcp_get_busid_by_adapter(adapter)); |
1da177e4 LT |
724 | if (fsf_req->fsf_command != fsf_req->qtcb->header.fsf_command) |
725 | ZFCP_LOG_NORMAL | |
726 | ("bug: Command issued by the device driver differs " | |
727 | "from the command returned by the adapter %s " | |
728 | "(debug info 0x%x, 0x%x).\n", | |
8a36e453 | 729 | zfcp_get_busid_by_adapter(adapter), |
1da177e4 LT |
730 | fsf_req->fsf_command, |
731 | fsf_req->qtcb->header.fsf_command); | |
732 | } | |
733 | ||
734 | if (!erp_action) | |
735 | return retval; | |
736 | ||
1da177e4 LT |
737 | zfcp_erp_async_handler(erp_action, 0); |
738 | ||
739 | return retval; | |
740 | } | |
741 | ||
742 | /* | |
743 | * function: zfcp_fsf_status_read | |
744 | * | |
745 | * purpose: initiates a Status Read command at the specified adapter | |
746 | * | |
747 | * returns: | |
748 | */ | |
749 | int | |
750 | zfcp_fsf_status_read(struct zfcp_adapter *adapter, int req_flags) | |
751 | { | |
752 | struct zfcp_fsf_req *fsf_req; | |
753 | struct fsf_status_read_buffer *status_buffer; | |
754 | unsigned long lock_flags; | |
755 | volatile struct qdio_buffer_element *sbale; | |
756 | int retval = 0; | |
757 | ||
758 | /* setup new FSF request */ | |
759 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS, | |
760 | req_flags | ZFCP_REQ_NO_QTCB, | |
761 | adapter->pool.fsf_req_status_read, | |
762 | &lock_flags, &fsf_req); | |
763 | if (retval < 0) { | |
764 | ZFCP_LOG_INFO("error: Could not create unsolicited status " | |
765 | "buffer for adapter %s.\n", | |
766 | zfcp_get_busid_by_adapter(adapter)); | |
767 | goto failed_req_create; | |
768 | } | |
769 | ||
770 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
771 | sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS; | |
772 | sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY; | |
773 | fsf_req->sbale_curr = 2; | |
774 | ||
775 | status_buffer = | |
776 | mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC); | |
777 | if (!status_buffer) { | |
778 | ZFCP_LOG_NORMAL("bug: could not get some buffer\n"); | |
779 | goto failed_buf; | |
780 | } | |
781 | memset(status_buffer, 0, sizeof (struct fsf_status_read_buffer)); | |
059c97d0 | 782 | fsf_req->data = (unsigned long) status_buffer; |
1da177e4 LT |
783 | |
784 | /* insert pointer to respective buffer */ | |
785 | sbale = zfcp_qdio_sbale_curr(fsf_req); | |
786 | sbale->addr = (void *) status_buffer; | |
787 | sbale->length = sizeof(struct fsf_status_read_buffer); | |
788 | ||
2abbe866 | 789 | retval = zfcp_fsf_req_send(fsf_req); |
1da177e4 LT |
790 | if (retval) { |
791 | ZFCP_LOG_DEBUG("error: Could not set-up unsolicited status " | |
792 | "environment.\n"); | |
793 | goto failed_req_send; | |
794 | } | |
795 | ||
796 | ZFCP_LOG_TRACE("Status Read request initiated (adapter%s)\n", | |
797 | zfcp_get_busid_by_adapter(adapter)); | |
798 | goto out; | |
799 | ||
800 | failed_req_send: | |
801 | mempool_free(status_buffer, adapter->pool.data_status_read); | |
802 | ||
803 | failed_buf: | |
804 | zfcp_fsf_req_free(fsf_req); | |
805 | failed_req_create: | |
8a36e453 | 806 | zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL); |
1da177e4 LT |
807 | out: |
808 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
809 | return retval; | |
810 | } | |
811 | ||
812 | static int | |
813 | zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *fsf_req) | |
814 | { | |
815 | struct fsf_status_read_buffer *status_buffer; | |
816 | struct zfcp_adapter *adapter; | |
817 | struct zfcp_port *port; | |
818 | unsigned long flags; | |
819 | ||
059c97d0 | 820 | status_buffer = (struct fsf_status_read_buffer *) fsf_req->data; |
1da177e4 LT |
821 | adapter = fsf_req->adapter; |
822 | ||
823 | read_lock_irqsave(&zfcp_data.config_lock, flags); | |
824 | list_for_each_entry(port, &adapter->port_list_head, list) | |
825 | if (port->d_id == (status_buffer->d_id & ZFCP_DID_MASK)) | |
826 | break; | |
827 | read_unlock_irqrestore(&zfcp_data.config_lock, flags); | |
828 | ||
829 | if (!port || (port->d_id != (status_buffer->d_id & ZFCP_DID_MASK))) { | |
830 | ZFCP_LOG_NORMAL("bug: Reopen port indication received for" | |
1d589edf | 831 | "nonexisting port with d_id 0x%06x on " |
1da177e4 LT |
832 | "adapter %s. Ignored.\n", |
833 | status_buffer->d_id & ZFCP_DID_MASK, | |
834 | zfcp_get_busid_by_adapter(adapter)); | |
835 | goto out; | |
836 | } | |
837 | ||
838 | switch (status_buffer->status_subtype) { | |
839 | ||
840 | case FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT: | |
1da177e4 LT |
841 | debug_text_event(adapter->erp_dbf, 3, "unsol_pc_phys:"); |
842 | zfcp_erp_port_reopen(port, 0); | |
843 | break; | |
844 | ||
845 | case FSF_STATUS_READ_SUB_ERROR_PORT: | |
1da177e4 LT |
846 | debug_text_event(adapter->erp_dbf, 1, "unsol_pc_err:"); |
847 | zfcp_erp_port_shutdown(port, 0); | |
848 | break; | |
849 | ||
850 | default: | |
851 | debug_text_event(adapter->erp_dbf, 0, "unsol_unk_sub:"); | |
852 | debug_exception(adapter->erp_dbf, 0, | |
853 | &status_buffer->status_subtype, sizeof (u32)); | |
854 | ZFCP_LOG_NORMAL("bug: Undefined status subtype received " | |
855 | "for a reopen indication on port with " | |
1d589edf | 856 | "d_id 0x%06x on the adapter %s. " |
1da177e4 LT |
857 | "Ignored. (debug info 0x%x)\n", |
858 | status_buffer->d_id, | |
859 | zfcp_get_busid_by_adapter(adapter), | |
860 | status_buffer->status_subtype); | |
861 | } | |
862 | out: | |
863 | return 0; | |
864 | } | |
865 | ||
866 | /* | |
867 | * function: zfcp_fsf_status_read_handler | |
868 | * | |
869 | * purpose: is called for finished Open Port command | |
870 | * | |
871 | * returns: | |
872 | */ | |
873 | static int | |
874 | zfcp_fsf_status_read_handler(struct zfcp_fsf_req *fsf_req) | |
875 | { | |
876 | int retval = 0; | |
877 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
878 | struct fsf_status_read_buffer *status_buffer = | |
059c97d0 | 879 | (struct fsf_status_read_buffer *) fsf_req->data; |
b7a52fa7 | 880 | struct fsf_bit_error_payload *fsf_bit_error; |
1da177e4 LT |
881 | |
882 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { | |
8a36e453 | 883 | zfcp_hba_dbf_event_fsf_unsol("dism", adapter, status_buffer); |
1da177e4 | 884 | mempool_free(status_buffer, adapter->pool.data_status_read); |
1db2c9c0 | 885 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
886 | goto out; |
887 | } | |
888 | ||
8a36e453 MS |
889 | zfcp_hba_dbf_event_fsf_unsol("read", adapter, status_buffer); |
890 | ||
1da177e4 LT |
891 | switch (status_buffer->status_type) { |
892 | ||
893 | case FSF_STATUS_READ_PORT_CLOSED: | |
1da177e4 LT |
894 | zfcp_fsf_status_read_port_closed(fsf_req); |
895 | break; | |
896 | ||
897 | case FSF_STATUS_READ_INCOMING_ELS: | |
1da177e4 LT |
898 | zfcp_fsf_incoming_els(fsf_req); |
899 | break; | |
900 | ||
901 | case FSF_STATUS_READ_SENSE_DATA_AVAIL: | |
1da177e4 LT |
902 | ZFCP_LOG_INFO("unsolicited sense data received (adapter %s)\n", |
903 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 LT |
904 | break; |
905 | ||
906 | case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: | |
b7a52fa7 RW |
907 | fsf_bit_error = (struct fsf_bit_error_payload *) |
908 | status_buffer->payload; | |
909 | ZFCP_LOG_NORMAL("Warning: bit error threshold data " | |
910 | "received (adapter %s, " | |
911 | "link failures = %i, loss of sync errors = %i, " | |
912 | "loss of signal errors = %i, " | |
913 | "primitive sequence errors = %i, " | |
914 | "invalid transmission word errors = %i, " | |
915 | "CRC errors = %i)\n", | |
916 | zfcp_get_busid_by_adapter(adapter), | |
917 | fsf_bit_error->link_failure_error_count, | |
918 | fsf_bit_error->loss_of_sync_error_count, | |
919 | fsf_bit_error->loss_of_signal_error_count, | |
920 | fsf_bit_error->primitive_sequence_error_count, | |
921 | fsf_bit_error->invalid_transmission_word_error_count, | |
922 | fsf_bit_error->crc_error_count); | |
923 | ZFCP_LOG_INFO("Additional bit error threshold data " | |
924 | "(adapter %s, " | |
925 | "primitive sequence event time-outs = %i, " | |
926 | "elastic buffer overrun errors = %i, " | |
927 | "advertised receive buffer-to-buffer credit = %i, " | |
928 | "current receice buffer-to-buffer credit = %i, " | |
929 | "advertised transmit buffer-to-buffer credit = %i, " | |
930 | "current transmit buffer-to-buffer credit = %i)\n", | |
931 | zfcp_get_busid_by_adapter(adapter), | |
932 | fsf_bit_error->primitive_sequence_event_timeout_count, | |
933 | fsf_bit_error->elastic_buffer_overrun_error_count, | |
934 | fsf_bit_error->advertised_receive_b2b_credit, | |
935 | fsf_bit_error->current_receive_b2b_credit, | |
936 | fsf_bit_error->advertised_transmit_b2b_credit, | |
937 | fsf_bit_error->current_transmit_b2b_credit); | |
1da177e4 LT |
938 | break; |
939 | ||
940 | case FSF_STATUS_READ_LINK_DOWN: | |
aef4a983 MS |
941 | switch (status_buffer->status_subtype) { |
942 | case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: | |
943 | ZFCP_LOG_INFO("Physical link to adapter %s is down\n", | |
944 | zfcp_get_busid_by_adapter(adapter)); | |
ee69ab7a MS |
945 | zfcp_fsf_link_down_info_eval(adapter, |
946 | (struct fsf_link_down_info *) | |
947 | &status_buffer->payload); | |
aef4a983 MS |
948 | break; |
949 | case FSF_STATUS_READ_SUB_FDISC_FAILED: | |
950 | ZFCP_LOG_INFO("Local link to adapter %s is down " | |
951 | "due to failed FDISC login\n", | |
ee69ab7a MS |
952 | zfcp_get_busid_by_adapter(adapter)); |
953 | zfcp_fsf_link_down_info_eval(adapter, | |
954 | (struct fsf_link_down_info *) | |
955 | &status_buffer->payload); | |
aef4a983 MS |
956 | break; |
957 | case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE: | |
958 | ZFCP_LOG_INFO("Local link to adapter %s is down " | |
959 | "due to firmware update on adapter\n", | |
960 | zfcp_get_busid_by_adapter(adapter)); | |
ee69ab7a | 961 | zfcp_fsf_link_down_info_eval(adapter, NULL); |
aef4a983 MS |
962 | break; |
963 | default: | |
964 | ZFCP_LOG_INFO("Local link to adapter %s is down " | |
965 | "due to unknown reason\n", | |
966 | zfcp_get_busid_by_adapter(adapter)); | |
ee69ab7a | 967 | zfcp_fsf_link_down_info_eval(adapter, NULL); |
aef4a983 | 968 | }; |
1da177e4 LT |
969 | break; |
970 | ||
971 | case FSF_STATUS_READ_LINK_UP: | |
aef4a983 | 972 | ZFCP_LOG_NORMAL("Local link to adapter %s was replugged. " |
ee69ab7a MS |
973 | "Restarting operations on this adapter\n", |
974 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 LT |
975 | /* All ports should be marked as ready to run again */ |
976 | zfcp_erp_modify_adapter_status(adapter, | |
977 | ZFCP_STATUS_COMMON_RUNNING, | |
978 | ZFCP_SET); | |
979 | zfcp_erp_adapter_reopen(adapter, | |
980 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | |
981 | | ZFCP_STATUS_COMMON_ERP_FAILED); | |
982 | break; | |
983 | ||
9eb69aff MS |
984 | case FSF_STATUS_READ_NOTIFICATION_LOST: |
985 | ZFCP_LOG_NORMAL("Unsolicited status notification(s) lost: " | |
986 | "adapter %s%s%s%s%s%s%s%s%s\n", | |
987 | zfcp_get_busid_by_adapter(adapter), | |
988 | (status_buffer->status_subtype & | |
989 | FSF_STATUS_READ_SUB_INCOMING_ELS) ? | |
990 | ", incoming ELS" : "", | |
991 | (status_buffer->status_subtype & | |
992 | FSF_STATUS_READ_SUB_SENSE_DATA) ? | |
993 | ", sense data" : "", | |
994 | (status_buffer->status_subtype & | |
995 | FSF_STATUS_READ_SUB_LINK_STATUS) ? | |
996 | ", link status change" : "", | |
997 | (status_buffer->status_subtype & | |
998 | FSF_STATUS_READ_SUB_PORT_CLOSED) ? | |
999 | ", port close" : "", | |
1000 | (status_buffer->status_subtype & | |
1001 | FSF_STATUS_READ_SUB_BIT_ERROR_THRESHOLD) ? | |
1002 | ", bit error exception" : "", | |
1003 | (status_buffer->status_subtype & | |
1004 | FSF_STATUS_READ_SUB_ACT_UPDATED) ? | |
1005 | ", ACT update" : "", | |
1006 | (status_buffer->status_subtype & | |
1007 | FSF_STATUS_READ_SUB_ACT_HARDENED) ? | |
1008 | ", ACT hardening" : "", | |
1009 | (status_buffer->status_subtype & | |
1010 | FSF_STATUS_READ_SUB_FEATURE_UPDATE_ALERT) ? | |
1011 | ", adapter feature change" : ""); | |
1012 | ||
1013 | if (status_buffer->status_subtype & | |
1014 | FSF_STATUS_READ_SUB_ACT_UPDATED) | |
1015 | zfcp_erp_adapter_access_changed(adapter); | |
1016 | break; | |
1017 | ||
1da177e4 | 1018 | case FSF_STATUS_READ_CFDC_UPDATED: |
8a36e453 | 1019 | ZFCP_LOG_NORMAL("CFDC has been updated on the adapter %s\n", |
1da177e4 LT |
1020 | zfcp_get_busid_by_adapter(adapter)); |
1021 | zfcp_erp_adapter_access_changed(adapter); | |
1022 | break; | |
1023 | ||
1024 | case FSF_STATUS_READ_CFDC_HARDENED: | |
1da177e4 LT |
1025 | switch (status_buffer->status_subtype) { |
1026 | case FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE: | |
8a36e453 | 1027 | ZFCP_LOG_NORMAL("CFDC of adapter %s saved on SE\n", |
1da177e4 LT |
1028 | zfcp_get_busid_by_adapter(adapter)); |
1029 | break; | |
1030 | case FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE2: | |
8a36e453 | 1031 | ZFCP_LOG_NORMAL("CFDC of adapter %s has been copied " |
1da177e4 LT |
1032 | "to the secondary SE\n", |
1033 | zfcp_get_busid_by_adapter(adapter)); | |
1034 | break; | |
1035 | default: | |
8a36e453 | 1036 | ZFCP_LOG_NORMAL("CFDC of adapter %s has been hardened\n", |
1da177e4 LT |
1037 | zfcp_get_busid_by_adapter(adapter)); |
1038 | } | |
1039 | break; | |
1040 | ||
aef4a983 MS |
1041 | case FSF_STATUS_READ_FEATURE_UPDATE_ALERT: |
1042 | debug_text_event(adapter->erp_dbf, 2, "unsol_features:"); | |
1043 | ZFCP_LOG_INFO("List of supported features on adapter %s has " | |
1044 | "been changed from 0x%08X to 0x%08X\n", | |
1045 | zfcp_get_busid_by_adapter(adapter), | |
1046 | *(u32*) (status_buffer->payload + 4), | |
1047 | *(u32*) (status_buffer->payload)); | |
1048 | adapter->adapter_features = *(u32*) status_buffer->payload; | |
1049 | break; | |
1050 | ||
1da177e4 | 1051 | default: |
8a36e453 | 1052 | ZFCP_LOG_NORMAL("warning: An unsolicited status packet of unknown " |
1da177e4 LT |
1053 | "type was received (debug info 0x%x)\n", |
1054 | status_buffer->status_type); | |
1055 | ZFCP_LOG_DEBUG("Dump of status_read_buffer %p:\n", | |
1056 | status_buffer); | |
1057 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
1058 | (char *) status_buffer, | |
1059 | sizeof (struct fsf_status_read_buffer)); | |
1060 | break; | |
1061 | } | |
1062 | mempool_free(status_buffer, adapter->pool.data_status_read); | |
1db2c9c0 | 1063 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
1064 | /* |
1065 | * recycle buffer and start new request repeat until outbound | |
1066 | * queue is empty or adapter shutdown is requested | |
1067 | */ | |
1068 | /* | |
1069 | * FIXME(qdio): | |
1070 | * we may wait in the req_create for 5s during shutdown, so | |
1071 | * qdio_cleanup will have to wait at least that long before returning | |
1072 | * with failure to allow us a proper cleanup under all circumstances | |
1073 | */ | |
1074 | /* | |
1075 | * FIXME: | |
1076 | * allocation failure possible? (Is this code needed?) | |
1077 | */ | |
1078 | retval = zfcp_fsf_status_read(adapter, 0); | |
1079 | if (retval < 0) { | |
1080 | ZFCP_LOG_INFO("Failed to create unsolicited status read " | |
1081 | "request for the adapter %s.\n", | |
1082 | zfcp_get_busid_by_adapter(adapter)); | |
1083 | /* temporary fix to avoid status read buffer shortage */ | |
1084 | adapter->status_read_failed++; | |
1085 | if ((ZFCP_STATUS_READS_RECOM - adapter->status_read_failed) | |
1086 | < ZFCP_STATUS_READ_FAILED_THRESHOLD) { | |
1087 | ZFCP_LOG_INFO("restart adapter %s due to status read " | |
1088 | "buffer shortage\n", | |
1089 | zfcp_get_busid_by_adapter(adapter)); | |
1090 | zfcp_erp_adapter_reopen(adapter, 0); | |
1091 | } | |
1092 | } | |
1093 | out: | |
1094 | return retval; | |
1095 | } | |
1096 | ||
1097 | /* | |
1098 | * function: zfcp_fsf_abort_fcp_command | |
1099 | * | |
1100 | * purpose: tells FSF to abort a running SCSI command | |
1101 | * | |
1102 | * returns: address of initiated FSF request | |
1103 | * NULL - request could not be initiated | |
1104 | * | |
1105 | * FIXME(design): should be watched by a timeout !!! | |
1106 | * FIXME(design) shouldn't this be modified to return an int | |
1107 | * also...don't know how though | |
1108 | */ | |
1109 | struct zfcp_fsf_req * | |
1110 | zfcp_fsf_abort_fcp_command(unsigned long old_req_id, | |
1111 | struct zfcp_adapter *adapter, | |
1112 | struct zfcp_unit *unit, int req_flags) | |
1113 | { | |
1114 | volatile struct qdio_buffer_element *sbale; | |
1da177e4 | 1115 | struct zfcp_fsf_req *fsf_req = NULL; |
2abbe866 | 1116 | unsigned long lock_flags; |
1da177e4 LT |
1117 | int retval = 0; |
1118 | ||
1119 | /* setup new FSF request */ | |
1120 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND, | |
1121 | req_flags, adapter->pool.fsf_req_abort, | |
1122 | &lock_flags, &fsf_req); | |
1123 | if (retval < 0) { | |
1124 | ZFCP_LOG_INFO("error: Failed to create an abort command " | |
1125 | "request for lun 0x%016Lx on port 0x%016Lx " | |
1126 | "on adapter %s.\n", | |
1127 | unit->fcp_lun, | |
1128 | unit->port->wwpn, | |
1129 | zfcp_get_busid_by_adapter(adapter)); | |
1130 | goto out; | |
1131 | } | |
1132 | ||
1133 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
1134 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1135 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1136 | ||
059c97d0 | 1137 | fsf_req->data = (unsigned long) unit; |
1da177e4 LT |
1138 | |
1139 | /* set handles of unit and its parent port in QTCB */ | |
1140 | fsf_req->qtcb->header.lun_handle = unit->handle; | |
1141 | fsf_req->qtcb->header.port_handle = unit->port->handle; | |
1142 | ||
1143 | /* set handle of request which should be aborted */ | |
1144 | fsf_req->qtcb->bottom.support.req_handle = (u64) old_req_id; | |
1145 | ||
2abbe866 AH |
1146 | zfcp_fsf_start_timer(fsf_req, ZFCP_SCSI_ER_TIMEOUT); |
1147 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 | 1148 | if (retval) { |
1da177e4 LT |
1149 | ZFCP_LOG_INFO("error: Failed to send abort command request " |
1150 | "on adapter %s, port 0x%016Lx, unit 0x%016Lx\n", | |
1151 | zfcp_get_busid_by_adapter(adapter), | |
1152 | unit->port->wwpn, unit->fcp_lun); | |
1153 | zfcp_fsf_req_free(fsf_req); | |
1154 | fsf_req = NULL; | |
1155 | goto out; | |
1156 | } | |
1157 | ||
1158 | ZFCP_LOG_DEBUG("Abort FCP Command request initiated " | |
1d589edf | 1159 | "(adapter%s, port d_id=0x%06x, " |
1da177e4 LT |
1160 | "unit x%016Lx, old_req_id=0x%lx)\n", |
1161 | zfcp_get_busid_by_adapter(adapter), | |
1162 | unit->port->d_id, | |
1163 | unit->fcp_lun, old_req_id); | |
1164 | out: | |
1165 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
1166 | return fsf_req; | |
1167 | } | |
1168 | ||
1169 | /* | |
1170 | * function: zfcp_fsf_abort_fcp_command_handler | |
1171 | * | |
1172 | * purpose: is called for finished Abort FCP Command request | |
1173 | * | |
1174 | * returns: | |
1175 | */ | |
1176 | static int | |
1177 | zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *new_fsf_req) | |
1178 | { | |
1179 | int retval = -EINVAL; | |
059c97d0 | 1180 | struct zfcp_unit *unit; |
1da177e4 LT |
1181 | unsigned char status_qual = |
1182 | new_fsf_req->qtcb->header.fsf_status_qual.word[0]; | |
1183 | ||
1da177e4 LT |
1184 | if (new_fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { |
1185 | /* do not set ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED */ | |
1186 | goto skip_fsfstatus; | |
1187 | } | |
1188 | ||
059c97d0 AH |
1189 | unit = (struct zfcp_unit *) new_fsf_req->data; |
1190 | ||
1da177e4 LT |
1191 | /* evaluate FSF status in QTCB */ |
1192 | switch (new_fsf_req->qtcb->header.fsf_status) { | |
1193 | ||
1194 | case FSF_PORT_HANDLE_NOT_VALID: | |
1195 | if (status_qual >> 4 != status_qual % 0xf) { | |
1da177e4 LT |
1196 | debug_text_event(new_fsf_req->adapter->erp_dbf, 3, |
1197 | "fsf_s_phand_nv0"); | |
1198 | /* | |
1199 | * In this case a command that was sent prior to a port | |
1200 | * reopen was aborted (handles are different). This is | |
1201 | * fine. | |
1202 | */ | |
1203 | } else { | |
1da177e4 LT |
1204 | ZFCP_LOG_INFO("Temporary port identifier 0x%x for " |
1205 | "port 0x%016Lx on adapter %s invalid. " | |
1206 | "This may happen occasionally.\n", | |
1207 | unit->port->handle, | |
1208 | unit->port->wwpn, | |
1209 | zfcp_get_busid_by_unit(unit)); | |
1210 | ZFCP_LOG_INFO("status qualifier:\n"); | |
1211 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO, | |
1212 | (char *) &new_fsf_req->qtcb->header. | |
1213 | fsf_status_qual, | |
1214 | sizeof (union fsf_status_qual)); | |
1215 | /* Let's hope this sorts out the mess */ | |
1216 | debug_text_event(new_fsf_req->adapter->erp_dbf, 1, | |
1217 | "fsf_s_phand_nv1"); | |
1218 | zfcp_erp_adapter_reopen(unit->port->adapter, 0); | |
1219 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1220 | } | |
1221 | break; | |
1222 | ||
1223 | case FSF_LUN_HANDLE_NOT_VALID: | |
1224 | if (status_qual >> 4 != status_qual % 0xf) { | |
1225 | /* 2 */ | |
1da177e4 LT |
1226 | debug_text_event(new_fsf_req->adapter->erp_dbf, 3, |
1227 | "fsf_s_lhand_nv0"); | |
1228 | /* | |
1229 | * In this case a command that was sent prior to a unit | |
1230 | * reopen was aborted (handles are different). | |
1231 | * This is fine. | |
1232 | */ | |
1233 | } else { | |
1da177e4 LT |
1234 | ZFCP_LOG_INFO |
1235 | ("Warning: Temporary LUN identifier 0x%x of LUN " | |
1236 | "0x%016Lx on port 0x%016Lx on adapter %s is " | |
1237 | "invalid. This may happen in rare cases. " | |
1238 | "Trying to re-establish link.\n", | |
1239 | unit->handle, | |
1240 | unit->fcp_lun, | |
1241 | unit->port->wwpn, | |
1242 | zfcp_get_busid_by_unit(unit)); | |
1243 | ZFCP_LOG_DEBUG("Status qualifier data:\n"); | |
1244 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
1245 | (char *) &new_fsf_req->qtcb->header. | |
1246 | fsf_status_qual, | |
1247 | sizeof (union fsf_status_qual)); | |
1248 | /* Let's hope this sorts out the mess */ | |
1249 | debug_text_event(new_fsf_req->adapter->erp_dbf, 1, | |
1250 | "fsf_s_lhand_nv1"); | |
1251 | zfcp_erp_port_reopen(unit->port, 0); | |
1252 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1253 | } | |
1254 | break; | |
1255 | ||
1256 | case FSF_FCP_COMMAND_DOES_NOT_EXIST: | |
1da177e4 LT |
1257 | retval = 0; |
1258 | debug_text_event(new_fsf_req->adapter->erp_dbf, 3, | |
1259 | "fsf_s_no_exist"); | |
1260 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED; | |
1261 | break; | |
1262 | ||
1263 | case FSF_PORT_BOXED: | |
1da177e4 LT |
1264 | ZFCP_LOG_INFO("Remote port 0x%016Lx on adapter %s needs to " |
1265 | "be reopened\n", unit->port->wwpn, | |
1266 | zfcp_get_busid_by_unit(unit)); | |
1267 | debug_text_event(new_fsf_req->adapter->erp_dbf, 2, | |
1268 | "fsf_s_pboxed"); | |
d736a27b | 1269 | zfcp_erp_port_boxed(unit->port); |
1da177e4 LT |
1270 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
1271 | | ZFCP_STATUS_FSFREQ_RETRY; | |
1272 | break; | |
1273 | ||
1274 | case FSF_LUN_BOXED: | |
1da177e4 LT |
1275 | ZFCP_LOG_INFO( |
1276 | "unit 0x%016Lx on port 0x%016Lx on adapter %s needs " | |
1277 | "to be reopened\n", | |
1278 | unit->fcp_lun, unit->port->wwpn, | |
1279 | zfcp_get_busid_by_unit(unit)); | |
1280 | debug_text_event(new_fsf_req->adapter->erp_dbf, 1, "fsf_s_lboxed"); | |
d736a27b | 1281 | zfcp_erp_unit_boxed(unit); |
1da177e4 LT |
1282 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
1283 | | ZFCP_STATUS_FSFREQ_RETRY; | |
1284 | break; | |
1285 | ||
1286 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
1287 | switch (new_fsf_req->qtcb->header.fsf_status_qual.word[0]) { |
1288 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
1289 | debug_text_event(new_fsf_req->adapter->erp_dbf, 1, |
1290 | "fsf_sq_ltest"); | |
65a8d4e1 | 1291 | zfcp_test_link(unit->port); |
1da177e4 LT |
1292 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1293 | break; | |
1294 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
1295 | /* SCSI stack will escalate */ |
1296 | debug_text_event(new_fsf_req->adapter->erp_dbf, 1, | |
1297 | "fsf_sq_ulp"); | |
1298 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1299 | break; | |
1300 | default: | |
1301 | ZFCP_LOG_NORMAL | |
1302 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
1303 | new_fsf_req->qtcb->header.fsf_status_qual.word[0]); | |
1304 | debug_text_event(new_fsf_req->adapter->erp_dbf, 0, | |
1305 | "fsf_sq_inval:"); | |
1306 | debug_exception(new_fsf_req->adapter->erp_dbf, 0, | |
1307 | &new_fsf_req->qtcb->header. | |
1308 | fsf_status_qual.word[0], sizeof (u32)); | |
1309 | break; | |
1310 | } | |
1311 | break; | |
1312 | ||
1313 | case FSF_GOOD: | |
1da177e4 LT |
1314 | retval = 0; |
1315 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED; | |
1316 | break; | |
1317 | ||
1318 | default: | |
1319 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
1320 | "(debug info 0x%x)\n", | |
1321 | new_fsf_req->qtcb->header.fsf_status); | |
1322 | debug_text_event(new_fsf_req->adapter->erp_dbf, 0, | |
1323 | "fsf_s_inval:"); | |
1324 | debug_exception(new_fsf_req->adapter->erp_dbf, 0, | |
1325 | &new_fsf_req->qtcb->header.fsf_status, | |
1326 | sizeof (u32)); | |
1327 | break; | |
1328 | } | |
1329 | skip_fsfstatus: | |
1330 | return retval; | |
1331 | } | |
1332 | ||
1333 | /** | |
1334 | * zfcp_use_one_sbal - checks whether req buffer and resp bother each fit into | |
1335 | * one SBALE | |
1336 | * Two scatter-gather lists are passed, one for the reqeust and one for the | |
1337 | * response. | |
1338 | */ | |
1339 | static inline int | |
1340 | zfcp_use_one_sbal(struct scatterlist *req, int req_count, | |
1341 | struct scatterlist *resp, int resp_count) | |
1342 | { | |
1343 | return ((req_count == 1) && | |
1344 | (resp_count == 1) && | |
1345 | (((unsigned long) zfcp_sg_to_address(&req[0]) & | |
1346 | PAGE_MASK) == | |
1347 | ((unsigned long) (zfcp_sg_to_address(&req[0]) + | |
1348 | req[0].length - 1) & PAGE_MASK)) && | |
1349 | (((unsigned long) zfcp_sg_to_address(&resp[0]) & | |
1350 | PAGE_MASK) == | |
1351 | ((unsigned long) (zfcp_sg_to_address(&resp[0]) + | |
1352 | resp[0].length - 1) & PAGE_MASK))); | |
1353 | } | |
1354 | ||
1355 | /** | |
1356 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) | |
1357 | * @ct: pointer to struct zfcp_send_ct which conatins all needed data for | |
1358 | * the request | |
1359 | * @pool: pointer to memory pool, if non-null this pool is used to allocate | |
1360 | * a struct zfcp_fsf_req | |
1361 | * @erp_action: pointer to erp_action, if non-null the Generic Service request | |
1362 | * is sent within error recovery | |
1363 | */ | |
1364 | int | |
1365 | zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, | |
1366 | struct zfcp_erp_action *erp_action) | |
1367 | { | |
1368 | volatile struct qdio_buffer_element *sbale; | |
1369 | struct zfcp_port *port; | |
1370 | struct zfcp_adapter *adapter; | |
1371 | struct zfcp_fsf_req *fsf_req; | |
1372 | unsigned long lock_flags; | |
1373 | int bytes; | |
1374 | int ret = 0; | |
1375 | ||
1376 | port = ct->port; | |
1377 | adapter = port->adapter; | |
1378 | ||
1379 | ret = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC, | |
1380 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
1381 | pool, &lock_flags, &fsf_req); | |
1382 | if (ret < 0) { | |
1383 | ZFCP_LOG_INFO("error: Could not create CT request (FC-GS) for " | |
1384 | "adapter: %s\n", | |
1385 | zfcp_get_busid_by_adapter(adapter)); | |
1386 | goto failed_req; | |
1387 | } | |
1388 | ||
1da177e4 LT |
1389 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1390 | if (zfcp_use_one_sbal(ct->req, ct->req_count, | |
1391 | ct->resp, ct->resp_count)){ | |
1392 | /* both request buffer and response buffer | |
1393 | fit into one sbale each */ | |
1394 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ; | |
1395 | sbale[2].addr = zfcp_sg_to_address(&ct->req[0]); | |
1396 | sbale[2].length = ct->req[0].length; | |
1397 | sbale[3].addr = zfcp_sg_to_address(&ct->resp[0]); | |
1398 | sbale[3].length = ct->resp[0].length; | |
1399 | sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY; | |
aef4a983 | 1400 | } else if (adapter->adapter_features & |
1da177e4 LT |
1401 | FSF_FEATURE_ELS_CT_CHAINED_SBALS) { |
1402 | /* try to use chained SBALs */ | |
1403 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, | |
1404 | SBAL_FLAGS0_TYPE_WRITE_READ, | |
1405 | ct->req, ct->req_count, | |
1406 | ZFCP_MAX_SBALS_PER_CT_REQ); | |
1407 | if (bytes <= 0) { | |
1408 | ZFCP_LOG_INFO("error: creation of CT request failed " | |
1409 | "on adapter %s\n", | |
1410 | zfcp_get_busid_by_adapter(adapter)); | |
1411 | if (bytes == 0) | |
1412 | ret = -ENOMEM; | |
1413 | else | |
1414 | ret = bytes; | |
1415 | ||
1416 | goto failed_send; | |
1417 | } | |
1418 | fsf_req->qtcb->bottom.support.req_buf_length = bytes; | |
1419 | fsf_req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; | |
1420 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, | |
1421 | SBAL_FLAGS0_TYPE_WRITE_READ, | |
1422 | ct->resp, ct->resp_count, | |
1423 | ZFCP_MAX_SBALS_PER_CT_REQ); | |
1424 | if (bytes <= 0) { | |
1425 | ZFCP_LOG_INFO("error: creation of CT request failed " | |
1426 | "on adapter %s\n", | |
1427 | zfcp_get_busid_by_adapter(adapter)); | |
1428 | if (bytes == 0) | |
1429 | ret = -ENOMEM; | |
1430 | else | |
1431 | ret = bytes; | |
1432 | ||
1433 | goto failed_send; | |
1434 | } | |
1435 | fsf_req->qtcb->bottom.support.resp_buf_length = bytes; | |
1436 | } else { | |
1437 | /* reject send generic request */ | |
1438 | ZFCP_LOG_INFO( | |
1439 | "error: microcode does not support chained SBALs," | |
1440 | "CT request too big (adapter %s)\n", | |
1441 | zfcp_get_busid_by_adapter(adapter)); | |
1442 | ret = -EOPNOTSUPP; | |
1443 | goto failed_send; | |
1444 | } | |
1445 | ||
1446 | /* settings in QTCB */ | |
1447 | fsf_req->qtcb->header.port_handle = port->handle; | |
06506d00 AH |
1448 | fsf_req->qtcb->bottom.support.service_class = |
1449 | ZFCP_FC_SERVICE_CLASS_DEFAULT; | |
1da177e4 | 1450 | fsf_req->qtcb->bottom.support.timeout = ct->timeout; |
059c97d0 | 1451 | fsf_req->data = (unsigned long) ct; |
1da177e4 | 1452 | |
8a36e453 MS |
1453 | zfcp_san_dbf_event_ct_request(fsf_req); |
1454 | ||
2abbe866 AH |
1455 | if (erp_action) { |
1456 | erp_action->fsf_req = fsf_req; | |
1457 | fsf_req->erp_action = erp_action; | |
1458 | zfcp_erp_start_timer(fsf_req); | |
1459 | } else | |
1460 | zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1461 | ||
1462 | ret = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
1463 | if (ret) { |
1464 | ZFCP_LOG_DEBUG("error: initiation of CT request failed " | |
1465 | "(adapter %s, port 0x%016Lx)\n", | |
1466 | zfcp_get_busid_by_adapter(adapter), port->wwpn); | |
1467 | goto failed_send; | |
1468 | } | |
1469 | ||
1470 | ZFCP_LOG_DEBUG("CT request initiated (adapter %s, port 0x%016Lx)\n", | |
1471 | zfcp_get_busid_by_adapter(adapter), port->wwpn); | |
1472 | goto out; | |
1473 | ||
1474 | failed_send: | |
1475 | zfcp_fsf_req_free(fsf_req); | |
1476 | if (erp_action != NULL) { | |
1477 | erp_action->fsf_req = NULL; | |
1478 | } | |
1479 | failed_req: | |
1480 | out: | |
1481 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, | |
1482 | lock_flags); | |
1483 | return ret; | |
1484 | } | |
1485 | ||
1486 | /** | |
1487 | * zfcp_fsf_send_ct_handler - handler for Generic Service requests | |
1488 | * @fsf_req: pointer to struct zfcp_fsf_req | |
1489 | * | |
059c97d0 AH |
1490 | * Data specific for the Generic Service request is passed using |
1491 | * fsf_req->data. There we find the pointer to struct zfcp_send_ct. | |
1492 | * Usually a specific handler for the CT request is called which is | |
1493 | * found in this structure. | |
1da177e4 LT |
1494 | */ |
1495 | static int | |
1496 | zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *fsf_req) | |
1497 | { | |
1498 | struct zfcp_port *port; | |
1499 | struct zfcp_adapter *adapter; | |
1500 | struct zfcp_send_ct *send_ct; | |
1501 | struct fsf_qtcb_header *header; | |
1502 | struct fsf_qtcb_bottom_support *bottom; | |
1503 | int retval = -EINVAL; | |
1504 | u16 subtable, rule, counter; | |
1505 | ||
1506 | adapter = fsf_req->adapter; | |
059c97d0 | 1507 | send_ct = (struct zfcp_send_ct *) fsf_req->data; |
1da177e4 LT |
1508 | port = send_ct->port; |
1509 | header = &fsf_req->qtcb->header; | |
1510 | bottom = &fsf_req->qtcb->bottom.support; | |
1511 | ||
1512 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
1513 | goto skip_fsfstatus; | |
1514 | ||
1515 | /* evaluate FSF status in QTCB */ | |
1516 | switch (header->fsf_status) { | |
1517 | ||
1518 | case FSF_GOOD: | |
8a36e453 | 1519 | zfcp_san_dbf_event_ct_response(fsf_req); |
1da177e4 LT |
1520 | retval = 0; |
1521 | break; | |
1522 | ||
1523 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: | |
06506d00 AH |
1524 | ZFCP_LOG_INFO("error: adapter %s does not support fc " |
1525 | "class %d.\n", | |
1526 | zfcp_get_busid_by_port(port), | |
1527 | ZFCP_FC_SERVICE_CLASS_DEFAULT); | |
1da177e4 LT |
1528 | /* stop operation for this adapter */ |
1529 | debug_text_exception(adapter->erp_dbf, 0, "fsf_s_class_nsup"); | |
1530 | zfcp_erp_adapter_shutdown(adapter, 0); | |
1531 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1532 | break; | |
1533 | ||
1534 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
1535 | switch (header->fsf_status_qual.word[0]){ |
1536 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
1537 | /* reopening link to port */ |
1538 | debug_text_event(adapter->erp_dbf, 1, "fsf_sq_ltest"); | |
1539 | zfcp_test_link(port); | |
1540 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1541 | break; | |
1542 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
1543 | /* ERP strategy will escalate */ |
1544 | debug_text_event(adapter->erp_dbf, 1, "fsf_sq_ulp"); | |
1545 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1546 | break; | |
1547 | default: | |
1548 | ZFCP_LOG_INFO("bug: Wrong status qualifier 0x%x " | |
1549 | "arrived.\n", | |
1550 | header->fsf_status_qual.word[0]); | |
1551 | break; | |
1552 | } | |
1553 | break; | |
1554 | ||
1555 | case FSF_ACCESS_DENIED: | |
1da177e4 | 1556 | ZFCP_LOG_NORMAL("access denied, cannot send generic service " |
1d589edf | 1557 | "command (adapter %s, port d_id=0x%06x)\n", |
1da177e4 LT |
1558 | zfcp_get_busid_by_port(port), port->d_id); |
1559 | for (counter = 0; counter < 2; counter++) { | |
1560 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
1561 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
1562 | switch (subtable) { | |
1563 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
1564 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
1565 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
1566 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
1567 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
1568 | zfcp_act_subtable_type[subtable], rule); | |
1569 | break; | |
1570 | } | |
1571 | } | |
1572 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_access"); | |
1573 | zfcp_erp_port_access_denied(port); | |
1574 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1575 | break; | |
1576 | ||
1577 | case FSF_GENERIC_COMMAND_REJECTED: | |
1da177e4 | 1578 | ZFCP_LOG_INFO("generic service command rejected " |
1d589edf | 1579 | "(adapter %s, port d_id=0x%06x)\n", |
1da177e4 LT |
1580 | zfcp_get_busid_by_port(port), port->d_id); |
1581 | ZFCP_LOG_INFO("status qualifier:\n"); | |
1582 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO, | |
1583 | (char *) &header->fsf_status_qual, | |
1584 | sizeof (union fsf_status_qual)); | |
1585 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_gcom_rej"); | |
1586 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1587 | break; | |
1588 | ||
1589 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
1590 | ZFCP_LOG_DEBUG("Temporary port identifier 0x%x for port " |
1591 | "0x%016Lx on adapter %s invalid. This may " | |
1592 | "happen occasionally.\n", port->handle, | |
1593 | port->wwpn, zfcp_get_busid_by_port(port)); | |
1594 | ZFCP_LOG_INFO("status qualifier:\n"); | |
1595 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO, | |
1596 | (char *) &header->fsf_status_qual, | |
1597 | sizeof (union fsf_status_qual)); | |
1598 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_phandle_nv"); | |
1599 | zfcp_erp_adapter_reopen(adapter, 0); | |
1600 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1601 | break; | |
1602 | ||
1603 | case FSF_PORT_BOXED: | |
1da177e4 | 1604 | ZFCP_LOG_INFO("port needs to be reopened " |
1d589edf | 1605 | "(adapter %s, port d_id=0x%06x)\n", |
1da177e4 LT |
1606 | zfcp_get_busid_by_port(port), port->d_id); |
1607 | debug_text_event(adapter->erp_dbf, 2, "fsf_s_pboxed"); | |
d736a27b | 1608 | zfcp_erp_port_boxed(port); |
1da177e4 LT |
1609 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
1610 | | ZFCP_STATUS_FSFREQ_RETRY; | |
1611 | break; | |
1612 | ||
1613 | /* following states should never occure, all cases avoided | |
1614 | in zfcp_fsf_send_ct - but who knows ... */ | |
1615 | case FSF_PAYLOAD_SIZE_MISMATCH: | |
1da177e4 LT |
1616 | ZFCP_LOG_INFO("payload size mismatch (adapter: %s, " |
1617 | "req_buf_length=%d, resp_buf_length=%d)\n", | |
1618 | zfcp_get_busid_by_adapter(adapter), | |
1619 | bottom->req_buf_length, bottom->resp_buf_length); | |
1620 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1621 | break; | |
1622 | case FSF_REQUEST_SIZE_TOO_LARGE: | |
1da177e4 LT |
1623 | ZFCP_LOG_INFO("request size too large (adapter: %s, " |
1624 | "req_buf_length=%d)\n", | |
1625 | zfcp_get_busid_by_adapter(adapter), | |
1626 | bottom->req_buf_length); | |
1627 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1628 | break; | |
1629 | case FSF_RESPONSE_SIZE_TOO_LARGE: | |
1da177e4 LT |
1630 | ZFCP_LOG_INFO("response size too large (adapter: %s, " |
1631 | "resp_buf_length=%d)\n", | |
1632 | zfcp_get_busid_by_adapter(adapter), | |
1633 | bottom->resp_buf_length); | |
1634 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1635 | break; | |
1636 | case FSF_SBAL_MISMATCH: | |
1da177e4 LT |
1637 | ZFCP_LOG_INFO("SBAL mismatch (adapter: %s, req_buf_length=%d, " |
1638 | "resp_buf_length=%d)\n", | |
1639 | zfcp_get_busid_by_adapter(adapter), | |
1640 | bottom->req_buf_length, bottom->resp_buf_length); | |
1641 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1642 | break; | |
1643 | ||
1644 | default: | |
1645 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
1646 | "(debug info 0x%x)\n", header->fsf_status); | |
1647 | debug_text_event(adapter->erp_dbf, 0, "fsf_sq_inval:"); | |
1648 | debug_exception(adapter->erp_dbf, 0, | |
1649 | &header->fsf_status_qual.word[0], sizeof (u32)); | |
1650 | break; | |
1651 | } | |
1652 | ||
1653 | skip_fsfstatus: | |
1654 | send_ct->status = retval; | |
1655 | ||
1656 | if (send_ct->handler != NULL) | |
1657 | send_ct->handler(send_ct->handler_data); | |
1658 | ||
1659 | return retval; | |
1660 | } | |
1661 | ||
1662 | /** | |
1663 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) | |
1664 | * @els: pointer to struct zfcp_send_els which contains all needed data for | |
1665 | * the command. | |
1666 | */ | |
1667 | int | |
1668 | zfcp_fsf_send_els(struct zfcp_send_els *els) | |
1669 | { | |
1670 | volatile struct qdio_buffer_element *sbale; | |
1671 | struct zfcp_fsf_req *fsf_req; | |
13e1e1f0 | 1672 | u32 d_id; |
1da177e4 LT |
1673 | struct zfcp_adapter *adapter; |
1674 | unsigned long lock_flags; | |
1675 | int bytes; | |
1676 | int ret = 0; | |
1677 | ||
1678 | d_id = els->d_id; | |
1679 | adapter = els->adapter; | |
1680 | ||
1681 | ret = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS, | |
1682 | ZFCP_REQ_AUTO_CLEANUP, | |
1683 | NULL, &lock_flags, &fsf_req); | |
1684 | if (ret < 0) { | |
1685 | ZFCP_LOG_INFO("error: creation of ELS request failed " | |
1d589edf | 1686 | "(adapter %s, port d_id: 0x%06x)\n", |
1da177e4 LT |
1687 | zfcp_get_busid_by_adapter(adapter), d_id); |
1688 | goto failed_req; | |
1689 | } | |
1690 | ||
1691 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
1692 | if (zfcp_use_one_sbal(els->req, els->req_count, | |
1693 | els->resp, els->resp_count)){ | |
1694 | /* both request buffer and response buffer | |
1695 | fit into one sbale each */ | |
1696 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ; | |
1697 | sbale[2].addr = zfcp_sg_to_address(&els->req[0]); | |
1698 | sbale[2].length = els->req[0].length; | |
1699 | sbale[3].addr = zfcp_sg_to_address(&els->resp[0]); | |
1700 | sbale[3].length = els->resp[0].length; | |
1701 | sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY; | |
aef4a983 | 1702 | } else if (adapter->adapter_features & |
1da177e4 LT |
1703 | FSF_FEATURE_ELS_CT_CHAINED_SBALS) { |
1704 | /* try to use chained SBALs */ | |
1705 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, | |
1706 | SBAL_FLAGS0_TYPE_WRITE_READ, | |
1707 | els->req, els->req_count, | |
1708 | ZFCP_MAX_SBALS_PER_ELS_REQ); | |
1709 | if (bytes <= 0) { | |
1710 | ZFCP_LOG_INFO("error: creation of ELS request failed " | |
1d589edf | 1711 | "(adapter %s, port d_id: 0x%06x)\n", |
1da177e4 LT |
1712 | zfcp_get_busid_by_adapter(adapter), d_id); |
1713 | if (bytes == 0) { | |
1714 | ret = -ENOMEM; | |
1715 | } else { | |
1716 | ret = bytes; | |
1717 | } | |
1718 | goto failed_send; | |
1719 | } | |
1720 | fsf_req->qtcb->bottom.support.req_buf_length = bytes; | |
1721 | fsf_req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; | |
1722 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, | |
1723 | SBAL_FLAGS0_TYPE_WRITE_READ, | |
1724 | els->resp, els->resp_count, | |
1725 | ZFCP_MAX_SBALS_PER_ELS_REQ); | |
1726 | if (bytes <= 0) { | |
1727 | ZFCP_LOG_INFO("error: creation of ELS request failed " | |
1d589edf | 1728 | "(adapter %s, port d_id: 0x%06x)\n", |
1da177e4 LT |
1729 | zfcp_get_busid_by_adapter(adapter), d_id); |
1730 | if (bytes == 0) { | |
1731 | ret = -ENOMEM; | |
1732 | } else { | |
1733 | ret = bytes; | |
1734 | } | |
1735 | goto failed_send; | |
1736 | } | |
1737 | fsf_req->qtcb->bottom.support.resp_buf_length = bytes; | |
1738 | } else { | |
1739 | /* reject request */ | |
1740 | ZFCP_LOG_INFO("error: microcode does not support chained SBALs" | |
1741 | ", ELS request too big (adapter %s, " | |
1d589edf | 1742 | "port d_id: 0x%06x)\n", |
1da177e4 LT |
1743 | zfcp_get_busid_by_adapter(adapter), d_id); |
1744 | ret = -EOPNOTSUPP; | |
1745 | goto failed_send; | |
1746 | } | |
1747 | ||
1748 | /* settings in QTCB */ | |
1749 | fsf_req->qtcb->bottom.support.d_id = d_id; | |
06506d00 AH |
1750 | fsf_req->qtcb->bottom.support.service_class = |
1751 | ZFCP_FC_SERVICE_CLASS_DEFAULT; | |
1da177e4 | 1752 | fsf_req->qtcb->bottom.support.timeout = ZFCP_ELS_TIMEOUT; |
059c97d0 | 1753 | fsf_req->data = (unsigned long) els; |
1da177e4 LT |
1754 | |
1755 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
1756 | ||
8a36e453 MS |
1757 | zfcp_san_dbf_event_els_request(fsf_req); |
1758 | ||
2abbe866 AH |
1759 | zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); |
1760 | ret = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
1761 | if (ret) { |
1762 | ZFCP_LOG_DEBUG("error: initiation of ELS request failed " | |
1d589edf | 1763 | "(adapter %s, port d_id: 0x%06x)\n", |
1da177e4 LT |
1764 | zfcp_get_busid_by_adapter(adapter), d_id); |
1765 | goto failed_send; | |
1766 | } | |
1767 | ||
1768 | ZFCP_LOG_DEBUG("ELS request initiated (adapter %s, port d_id: " | |
1d589edf | 1769 | "0x%06x)\n", zfcp_get_busid_by_adapter(adapter), d_id); |
1da177e4 LT |
1770 | goto out; |
1771 | ||
1772 | failed_send: | |
1773 | zfcp_fsf_req_free(fsf_req); | |
1774 | ||
1775 | failed_req: | |
1776 | out: | |
1777 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, | |
1778 | lock_flags); | |
1779 | ||
1780 | return ret; | |
1781 | } | |
1782 | ||
1783 | /** | |
1784 | * zfcp_fsf_send_els_handler - handler for ELS commands | |
1785 | * @fsf_req: pointer to struct zfcp_fsf_req | |
1786 | * | |
059c97d0 AH |
1787 | * Data specific for the ELS command is passed using |
1788 | * fsf_req->data. There we find the pointer to struct zfcp_send_els. | |
1789 | * Usually a specific handler for the ELS command is called which is | |
1790 | * found in this structure. | |
1da177e4 LT |
1791 | */ |
1792 | static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *fsf_req) | |
1793 | { | |
1794 | struct zfcp_adapter *adapter; | |
1da177e4 | 1795 | struct zfcp_port *port; |
13e1e1f0 | 1796 | u32 d_id; |
1da177e4 LT |
1797 | struct fsf_qtcb_header *header; |
1798 | struct fsf_qtcb_bottom_support *bottom; | |
1799 | struct zfcp_send_els *send_els; | |
1800 | int retval = -EINVAL; | |
1801 | u16 subtable, rule, counter; | |
1802 | ||
059c97d0 | 1803 | send_els = (struct zfcp_send_els *) fsf_req->data; |
1da177e4 | 1804 | adapter = send_els->adapter; |
64b29a13 | 1805 | port = send_els->port; |
1da177e4 LT |
1806 | d_id = send_els->d_id; |
1807 | header = &fsf_req->qtcb->header; | |
1808 | bottom = &fsf_req->qtcb->bottom.support; | |
1809 | ||
1810 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
1811 | goto skip_fsfstatus; | |
1812 | ||
1813 | switch (header->fsf_status) { | |
1814 | ||
1815 | case FSF_GOOD: | |
8a36e453 | 1816 | zfcp_san_dbf_event_els_response(fsf_req); |
1da177e4 LT |
1817 | retval = 0; |
1818 | break; | |
1819 | ||
1820 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: | |
06506d00 AH |
1821 | ZFCP_LOG_INFO("error: adapter %s does not support fc " |
1822 | "class %d.\n", | |
1823 | zfcp_get_busid_by_adapter(adapter), | |
1824 | ZFCP_FC_SERVICE_CLASS_DEFAULT); | |
1da177e4 LT |
1825 | /* stop operation for this adapter */ |
1826 | debug_text_exception(adapter->erp_dbf, 0, "fsf_s_class_nsup"); | |
1827 | zfcp_erp_adapter_shutdown(adapter, 0); | |
1828 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1829 | break; | |
1830 | ||
1831 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
1832 | switch (header->fsf_status_qual.word[0]){ |
1833 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1834 | debug_text_event(adapter->erp_dbf, 1, "fsf_sq_ltest"); |
64b29a13 AH |
1835 | if (port && (send_els->ls_code != ZFCP_LS_ADISC)) |
1836 | zfcp_test_link(port); | |
1da177e4 LT |
1837 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1838 | break; | |
1839 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
1840 | debug_text_event(adapter->erp_dbf, 1, "fsf_sq_ulp"); |
1841 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1842 | retval = | |
1843 | zfcp_handle_els_rjt(header->fsf_status_qual.word[1], | |
1844 | (struct zfcp_ls_rjt_par *) | |
1845 | &header->fsf_status_qual.word[2]); | |
1846 | break; | |
1847 | case FSF_SQ_RETRY_IF_POSSIBLE: | |
1da177e4 LT |
1848 | debug_text_event(adapter->erp_dbf, 1, "fsf_sq_retry"); |
1849 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1850 | break; | |
1851 | default: | |
1852 | ZFCP_LOG_INFO("bug: Wrong status qualifier 0x%x\n", | |
1853 | header->fsf_status_qual.word[0]); | |
1854 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO, | |
1855 | (char*)header->fsf_status_qual.word, 16); | |
1856 | } | |
1857 | break; | |
1858 | ||
1859 | case FSF_ELS_COMMAND_REJECTED: | |
1da177e4 LT |
1860 | ZFCP_LOG_INFO("ELS has been rejected because command filter " |
1861 | "prohibited sending " | |
1d589edf | 1862 | "(adapter: %s, port d_id: 0x%06x)\n", |
1da177e4 LT |
1863 | zfcp_get_busid_by_adapter(adapter), d_id); |
1864 | ||
1865 | break; | |
1866 | ||
1867 | case FSF_PAYLOAD_SIZE_MISMATCH: | |
1da177e4 LT |
1868 | ZFCP_LOG_INFO( |
1869 | "ELS request size and ELS response size must be either " | |
1870 | "both 0, or both greater than 0 " | |
1871 | "(adapter: %s, req_buf_length=%d resp_buf_length=%d)\n", | |
1872 | zfcp_get_busid_by_adapter(adapter), | |
1873 | bottom->req_buf_length, | |
1874 | bottom->resp_buf_length); | |
1875 | break; | |
1876 | ||
1877 | case FSF_REQUEST_SIZE_TOO_LARGE: | |
1da177e4 LT |
1878 | ZFCP_LOG_INFO( |
1879 | "Length of the ELS request buffer, " | |
1880 | "specified in QTCB bottom, " | |
1881 | "exceeds the size of the buffers " | |
1882 | "that have been allocated for ELS request data " | |
1883 | "(adapter: %s, req_buf_length=%d)\n", | |
1884 | zfcp_get_busid_by_adapter(adapter), | |
1885 | bottom->req_buf_length); | |
1886 | break; | |
1887 | ||
1888 | case FSF_RESPONSE_SIZE_TOO_LARGE: | |
1da177e4 LT |
1889 | ZFCP_LOG_INFO( |
1890 | "Length of the ELS response buffer, " | |
1891 | "specified in QTCB bottom, " | |
1892 | "exceeds the size of the buffers " | |
1893 | "that have been allocated for ELS response data " | |
1894 | "(adapter: %s, resp_buf_length=%d)\n", | |
1895 | zfcp_get_busid_by_adapter(adapter), | |
1896 | bottom->resp_buf_length); | |
1897 | break; | |
1898 | ||
1899 | case FSF_SBAL_MISMATCH: | |
1900 | /* should never occure, avoided in zfcp_fsf_send_els */ | |
1da177e4 LT |
1901 | ZFCP_LOG_INFO("SBAL mismatch (adapter: %s, req_buf_length=%d, " |
1902 | "resp_buf_length=%d)\n", | |
1903 | zfcp_get_busid_by_adapter(adapter), | |
1904 | bottom->req_buf_length, bottom->resp_buf_length); | |
1905 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1906 | break; | |
1907 | ||
1908 | case FSF_ACCESS_DENIED: | |
1da177e4 | 1909 | ZFCP_LOG_NORMAL("access denied, cannot send ELS command " |
1d589edf | 1910 | "(adapter %s, port d_id=0x%06x)\n", |
1da177e4 LT |
1911 | zfcp_get_busid_by_adapter(adapter), d_id); |
1912 | for (counter = 0; counter < 2; counter++) { | |
1913 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
1914 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
1915 | switch (subtable) { | |
1916 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
1917 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
1918 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
1919 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
1920 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
1921 | zfcp_act_subtable_type[subtable], rule); | |
1922 | break; | |
1923 | } | |
1924 | } | |
1925 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_access"); | |
1da177e4 LT |
1926 | if (port != NULL) |
1927 | zfcp_erp_port_access_denied(port); | |
1da177e4 LT |
1928 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1929 | break; | |
1930 | ||
1931 | default: | |
1932 | ZFCP_LOG_NORMAL( | |
1933 | "bug: An unknown FSF Status was presented " | |
1934 | "(adapter: %s, fsf_status=0x%08x)\n", | |
1935 | zfcp_get_busid_by_adapter(adapter), | |
1936 | header->fsf_status); | |
1937 | debug_text_event(adapter->erp_dbf, 0, "fsf_sq_inval"); | |
1938 | debug_exception(adapter->erp_dbf, 0, | |
1939 | &header->fsf_status_qual.word[0], sizeof(u32)); | |
1940 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1941 | break; | |
1942 | } | |
1943 | ||
1944 | skip_fsfstatus: | |
1945 | send_els->status = retval; | |
1946 | ||
1947 | if (send_els->handler != 0) | |
1948 | send_els->handler(send_els->handler_data); | |
1949 | ||
1950 | return retval; | |
1951 | } | |
1952 | ||
1da177e4 LT |
1953 | int |
1954 | zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) | |
1955 | { | |
1956 | volatile struct qdio_buffer_element *sbale; | |
2abbe866 | 1957 | struct zfcp_fsf_req *fsf_req; |
1da177e4 LT |
1958 | unsigned long lock_flags; |
1959 | int retval = 0; | |
1960 | ||
1961 | /* setup new FSF request */ | |
1962 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
1963 | FSF_QTCB_EXCHANGE_CONFIG_DATA, | |
1964 | ZFCP_REQ_AUTO_CLEANUP, | |
1965 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 1966 | &lock_flags, &fsf_req); |
1da177e4 LT |
1967 | if (retval < 0) { |
1968 | ZFCP_LOG_INFO("error: Could not create exchange configuration " | |
1969 | "data request for adapter %s.\n", | |
1970 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
1971 | goto out; | |
1972 | } | |
1973 | ||
2abbe866 | 1974 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
1975 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1976 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1977 | ||
2abbe866 | 1978 | fsf_req->qtcb->bottom.config.feature_selection = |
aef4a983 MS |
1979 | FSF_FEATURE_CFDC | |
1980 | FSF_FEATURE_LUN_SHARING | | |
9eb69aff | 1981 | FSF_FEATURE_NOTIFICATION_LOST | |
aef4a983 | 1982 | FSF_FEATURE_UPDATE_ALERT; |
2abbe866 AH |
1983 | fsf_req->erp_action = erp_action; |
1984 | erp_action->fsf_req = fsf_req; | |
1da177e4 | 1985 | |
2abbe866 AH |
1986 | zfcp_erp_start_timer(fsf_req); |
1987 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
1988 | if (retval) { |
1989 | ZFCP_LOG_INFO | |
1990 | ("error: Could not send exchange configuration data " | |
1991 | "command on the adapter %s\n", | |
1992 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2abbe866 | 1993 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
1994 | erp_action->fsf_req = NULL; |
1995 | goto out; | |
1996 | } | |
1997 | ||
1998 | ZFCP_LOG_DEBUG("exchange configuration data request initiated " | |
1999 | "(adapter %s)\n", | |
2000 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2001 | ||
2002 | out: | |
2003 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
2004 | lock_flags); | |
2005 | return retval; | |
2006 | } | |
2007 | ||
2008 | /** | |
2009 | * zfcp_fsf_exchange_config_evaluate | |
2010 | * @fsf_req: fsf_req which belongs to xchg config data request | |
2011 | * @xchg_ok: specifies if xchg config data was incomplete or complete (0/1) | |
2012 | * | |
2013 | * returns: -EIO on error, 0 otherwise | |
2014 | */ | |
2015 | static int | |
2016 | zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *fsf_req, int xchg_ok) | |
2017 | { | |
2018 | struct fsf_qtcb_bottom_config *bottom; | |
2019 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
13e1e1f0 | 2020 | struct Scsi_Host *shost = adapter->scsi_host; |
1da177e4 LT |
2021 | |
2022 | bottom = &fsf_req->qtcb->bottom.config; | |
2023 | ZFCP_LOG_DEBUG("low/high QTCB version 0x%x/0x%x of FSF\n", | |
2024 | bottom->low_qtcb_version, bottom->high_qtcb_version); | |
2025 | adapter->fsf_lic_version = bottom->lic_version; | |
aef4a983 MS |
2026 | adapter->adapter_features = bottom->adapter_features; |
2027 | adapter->connection_features = bottom->connection_features; | |
6f71d9bc | 2028 | adapter->peer_wwpn = 0; |
2029 | adapter->peer_wwnn = 0; | |
2030 | adapter->peer_d_id = 0; | |
1da177e4 LT |
2031 | |
2032 | if (xchg_ok) { | |
13e1e1f0 AH |
2033 | fc_host_node_name(shost) = bottom->nport_serv_param.wwnn; |
2034 | fc_host_port_name(shost) = bottom->nport_serv_param.wwpn; | |
2035 | fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK; | |
2036 | fc_host_speed(shost) = bottom->fc_link_speed; | |
2037 | fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3; | |
1da177e4 | 2038 | adapter->hydra_version = bottom->adapter_type; |
ad757cdf AH |
2039 | if (fc_host_permanent_port_name(shost) == -1) |
2040 | fc_host_permanent_port_name(shost) = | |
2041 | fc_host_port_name(shost); | |
2042 | if (bottom->fc_topology == FSF_TOPO_P2P) { | |
2043 | adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK; | |
2044 | adapter->peer_wwpn = bottom->plogi_payload.wwpn; | |
2045 | adapter->peer_wwnn = bottom->plogi_payload.wwnn; | |
2046 | fc_host_port_type(shost) = FC_PORTTYPE_PTP; | |
2047 | } else if (bottom->fc_topology == FSF_TOPO_FABRIC) | |
2048 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
2049 | else if (bottom->fc_topology == FSF_TOPO_AL) | |
2050 | fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; | |
2051 | else | |
2052 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; | |
1da177e4 | 2053 | } else { |
13e1e1f0 AH |
2054 | fc_host_node_name(shost) = 0; |
2055 | fc_host_port_name(shost) = 0; | |
2056 | fc_host_port_id(shost) = 0; | |
2057 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; | |
ad757cdf | 2058 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; |
1da177e4 LT |
2059 | adapter->hydra_version = 0; |
2060 | } | |
2061 | ||
aef4a983 | 2062 | if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) { |
1da177e4 | 2063 | adapter->hardware_version = bottom->hardware_version; |
13e1e1f0 AH |
2064 | memcpy(fc_host_serial_number(shost), bottom->serial_number, |
2065 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
2066 | EBCASC(fc_host_serial_number(shost), | |
2067 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
1da177e4 LT |
2068 | } |
2069 | ||
6f71d9bc | 2070 | ZFCP_LOG_NORMAL("The adapter %s reported the following characteristics:\n" |
13e1e1f0 AH |
2071 | "WWNN 0x%016Lx, " |
2072 | "WWPN 0x%016Lx, " | |
1d589edf | 2073 | "S_ID 0x%06x,\n" |
13e1e1f0 AH |
2074 | "adapter version 0x%x, " |
2075 | "LIC version 0x%x, " | |
2076 | "FC link speed %d Gb/s\n", | |
2077 | zfcp_get_busid_by_adapter(adapter), | |
2078 | (wwn_t) fc_host_node_name(shost), | |
2079 | (wwn_t) fc_host_port_name(shost), | |
2080 | fc_host_port_id(shost), | |
2081 | adapter->hydra_version, | |
2082 | adapter->fsf_lic_version, | |
2083 | fc_host_speed(shost)); | |
1da177e4 LT |
2084 | if (ZFCP_QTCB_VERSION < bottom->low_qtcb_version) { |
2085 | ZFCP_LOG_NORMAL("error: the adapter %s " | |
2086 | "only supports newer control block " | |
2087 | "versions in comparison to this device " | |
2088 | "driver (try updated device driver)\n", | |
2089 | zfcp_get_busid_by_adapter(adapter)); | |
2090 | debug_text_event(adapter->erp_dbf, 0, "low_qtcb_ver"); | |
2091 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2092 | return -EIO; | |
2093 | } | |
2094 | if (ZFCP_QTCB_VERSION > bottom->high_qtcb_version) { | |
2095 | ZFCP_LOG_NORMAL("error: the adapter %s " | |
2096 | "only supports older control block " | |
2097 | "versions than this device driver uses" | |
2098 | "(consider a microcode upgrade)\n", | |
2099 | zfcp_get_busid_by_adapter(adapter)); | |
2100 | debug_text_event(adapter->erp_dbf, 0, "high_qtcb_ver"); | |
2101 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2102 | return -EIO; | |
2103 | } | |
2104 | return 0; | |
2105 | } | |
2106 | ||
2107 | /* | |
2108 | * function: zfcp_fsf_exchange_config_data_handler | |
2109 | * | |
2110 | * purpose: is called for finished Exchange Configuration Data command | |
2111 | * | |
2112 | * returns: | |
2113 | */ | |
2114 | static int | |
2115 | zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *fsf_req) | |
2116 | { | |
2117 | struct fsf_qtcb_bottom_config *bottom; | |
2118 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
aef4a983 | 2119 | struct fsf_qtcb *qtcb = fsf_req->qtcb; |
1da177e4 LT |
2120 | |
2121 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
2122 | return -EIO; | |
2123 | ||
aef4a983 | 2124 | switch (qtcb->header.fsf_status) { |
1da177e4 LT |
2125 | |
2126 | case FSF_GOOD: | |
1da177e4 LT |
2127 | if (zfcp_fsf_exchange_config_evaluate(fsf_req, 1)) |
2128 | return -EIO; | |
2129 | ||
ad757cdf AH |
2130 | switch (fc_host_port_type(adapter->scsi_host)) { |
2131 | case FC_PORTTYPE_PTP: | |
6f71d9bc | 2132 | ZFCP_LOG_NORMAL("Point-to-Point fibrechannel " |
2133 | "configuration detected at adapter %s\n" | |
2134 | "Peer WWNN 0x%016llx, " | |
2135 | "peer WWPN 0x%016llx, " | |
2136 | "peer d_id 0x%06x\n", | |
2137 | zfcp_get_busid_by_adapter(adapter), | |
2138 | adapter->peer_wwnn, | |
2139 | adapter->peer_wwpn, | |
2140 | adapter->peer_d_id); | |
1da177e4 LT |
2141 | debug_text_event(fsf_req->adapter->erp_dbf, 0, |
2142 | "top-p-to-p"); | |
6f71d9bc | 2143 | break; |
ad757cdf | 2144 | case FC_PORTTYPE_NLPORT: |
1da177e4 LT |
2145 | ZFCP_LOG_NORMAL("error: Arbitrated loop fibrechannel " |
2146 | "topology detected at adapter %s " | |
2147 | "unsupported, shutting down adapter\n", | |
2148 | zfcp_get_busid_by_adapter(adapter)); | |
2149 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
2150 | "top-al"); | |
2151 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2152 | return -EIO; | |
ad757cdf | 2153 | case FC_PORTTYPE_NPORT: |
aef4a983 | 2154 | ZFCP_LOG_NORMAL("Switched fabric fibrechannel " |
1da177e4 LT |
2155 | "network detected at adapter %s.\n", |
2156 | zfcp_get_busid_by_adapter(adapter)); | |
2157 | break; | |
2158 | default: | |
2159 | ZFCP_LOG_NORMAL("bug: The fibrechannel topology " | |
2160 | "reported by the exchange " | |
2161 | "configuration command for " | |
2162 | "the adapter %s is not " | |
2163 | "of a type known to the zfcp " | |
2164 | "driver, shutting down adapter\n", | |
2165 | zfcp_get_busid_by_adapter(adapter)); | |
2166 | debug_text_exception(fsf_req->adapter->erp_dbf, 0, | |
2167 | "unknown-topo"); | |
2168 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2169 | return -EIO; | |
2170 | } | |
aef4a983 | 2171 | bottom = &qtcb->bottom.config; |
1da177e4 LT |
2172 | if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { |
2173 | ZFCP_LOG_NORMAL("bug: Maximum QTCB size (%d bytes) " | |
2174 | "allowed by the adapter %s " | |
2175 | "is lower than the minimum " | |
2176 | "required by the driver (%ld bytes).\n", | |
2177 | bottom->max_qtcb_size, | |
2178 | zfcp_get_busid_by_adapter(adapter), | |
2179 | sizeof(struct fsf_qtcb)); | |
2180 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
2181 | "qtcb-size"); | |
2182 | debug_event(fsf_req->adapter->erp_dbf, 0, | |
2183 | &bottom->max_qtcb_size, sizeof (u32)); | |
2184 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2185 | return -EIO; | |
2186 | } | |
2187 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, | |
2188 | &adapter->status); | |
2189 | break; | |
2190 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: | |
2191 | debug_text_event(adapter->erp_dbf, 0, "xchg-inco"); | |
2192 | ||
2193 | if (zfcp_fsf_exchange_config_evaluate(fsf_req, 0)) | |
2194 | return -EIO; | |
2195 | ||
aef4a983 MS |
2196 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, &adapter->status); |
2197 | ||
2198 | zfcp_fsf_link_down_info_eval(adapter, | |
2199 | &qtcb->header.fsf_status_qual.link_down_info); | |
1da177e4 LT |
2200 | break; |
2201 | default: | |
2202 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf-stat-ng"); | |
2203 | debug_event(fsf_req->adapter->erp_dbf, 0, | |
2204 | &fsf_req->qtcb->header.fsf_status, sizeof (u32)); | |
2205 | zfcp_erp_adapter_shutdown(adapter, 0); | |
2206 | return -EIO; | |
2207 | } | |
2208 | return 0; | |
2209 | } | |
2210 | ||
2211 | /** | |
2212 | * zfcp_fsf_exchange_port_data - request information about local port | |
aef4a983 | 2213 | * @erp_action: ERP action for the adapter for which port data is requested |
1da177e4 LT |
2214 | * @adapter: for which port data is requested |
2215 | * @data: response to exchange port data request | |
2216 | */ | |
2217 | int | |
aef4a983 MS |
2218 | zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action, |
2219 | struct zfcp_adapter *adapter, | |
1da177e4 LT |
2220 | struct fsf_qtcb_bottom_port *data) |
2221 | { | |
2222 | volatile struct qdio_buffer_element *sbale; | |
1da177e4 | 2223 | struct zfcp_fsf_req *fsf_req; |
2abbe866 AH |
2224 | unsigned long lock_flags; |
2225 | int retval = 0; | |
1da177e4 | 2226 | |
aef4a983 | 2227 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) { |
1da177e4 LT |
2228 | ZFCP_LOG_INFO("error: exchange port data " |
2229 | "command not supported by adapter %s\n", | |
2230 | zfcp_get_busid_by_adapter(adapter)); | |
2231 | return -EOPNOTSUPP; | |
2232 | } | |
2233 | ||
1da177e4 LT |
2234 | /* setup new FSF request */ |
2235 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, | |
2448c459 | 2236 | erp_action ? ZFCP_REQ_AUTO_CLEANUP : 0, |
d2c993d8 | 2237 | NULL, &lock_flags, &fsf_req); |
1da177e4 LT |
2238 | if (retval < 0) { |
2239 | ZFCP_LOG_INFO("error: Out of resources. Could not create an " | |
2240 | "exchange port data request for" | |
2241 | "the adapter %s.\n", | |
2242 | zfcp_get_busid_by_adapter(adapter)); | |
2243 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, | |
2244 | lock_flags); | |
2448c459 | 2245 | return retval; |
aef4a983 MS |
2246 | } |
2247 | ||
2248 | if (data) | |
2448c459 | 2249 | fsf_req->data = (unsigned long) data; |
059c97d0 | 2250 | |
1da177e4 LT |
2251 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
2252 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
2253 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2254 | ||
2448c459 AH |
2255 | if (erp_action) { |
2256 | erp_action->fsf_req = fsf_req; | |
2257 | fsf_req->erp_action = erp_action; | |
2abbe866 AH |
2258 | zfcp_erp_start_timer(fsf_req); |
2259 | } else | |
2260 | zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1da177e4 | 2261 | |
2abbe866 | 2262 | retval = zfcp_fsf_req_send(fsf_req); |
1da177e4 LT |
2263 | if (retval) { |
2264 | ZFCP_LOG_INFO("error: Could not send an exchange port data " | |
2265 | "command on the adapter %s\n", | |
2266 | zfcp_get_busid_by_adapter(adapter)); | |
2267 | zfcp_fsf_req_free(fsf_req); | |
aef4a983 MS |
2268 | if (erp_action) |
2269 | erp_action->fsf_req = NULL; | |
1da177e4 LT |
2270 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, |
2271 | lock_flags); | |
2448c459 | 2272 | return retval; |
1da177e4 LT |
2273 | } |
2274 | ||
2448c459 | 2275 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); |
1da177e4 | 2276 | |
2448c459 AH |
2277 | if (!erp_action) { |
2278 | wait_event(fsf_req->completion_wq, | |
2279 | fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
2448c459 | 2280 | zfcp_fsf_req_free(fsf_req); |
2448c459 | 2281 | } |
1da177e4 LT |
2282 | return retval; |
2283 | } | |
2284 | ||
2f8f3ed5 AH |
2285 | /** |
2286 | * zfcp_fsf_exchange_port_evaluate | |
2287 | * @fsf_req: fsf_req which belongs to xchg port data request | |
2288 | * @xchg_ok: specifies if xchg port data was incomplete or complete (0/1) | |
2289 | */ | |
2290 | static void | |
2291 | zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *fsf_req, int xchg_ok) | |
2292 | { | |
2293 | struct zfcp_adapter *adapter; | |
2294 | struct fsf_qtcb *qtcb; | |
2295 | struct fsf_qtcb_bottom_port *bottom, *data; | |
2296 | struct Scsi_Host *shost; | |
2297 | ||
2298 | adapter = fsf_req->adapter; | |
2299 | qtcb = fsf_req->qtcb; | |
2300 | bottom = &qtcb->bottom.port; | |
2301 | shost = adapter->scsi_host; | |
2302 | ||
2303 | data = (struct fsf_qtcb_bottom_port*) fsf_req->data; | |
2304 | if (data) | |
2305 | memcpy(data, bottom, sizeof(struct fsf_qtcb_bottom_port)); | |
2306 | ||
2307 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) | |
2308 | fc_host_permanent_port_name(shost) = bottom->wwpn; | |
2309 | else | |
2310 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
2311 | fc_host_maxframe_size(shost) = bottom->maximum_frame_size; | |
2312 | fc_host_supported_speeds(shost) = bottom->supported_speed; | |
2313 | } | |
1da177e4 LT |
2314 | |
2315 | /** | |
2316 | * zfcp_fsf_exchange_port_data_handler - handler for exchange_port_data request | |
2317 | * @fsf_req: pointer to struct zfcp_fsf_req | |
2318 | */ | |
2319 | static void | |
2320 | zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *fsf_req) | |
2321 | { | |
2f8f3ed5 AH |
2322 | struct zfcp_adapter *adapter; |
2323 | struct fsf_qtcb *qtcb; | |
2324 | ||
2325 | adapter = fsf_req->adapter; | |
2326 | qtcb = fsf_req->qtcb; | |
1da177e4 LT |
2327 | |
2328 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
2329 | return; | |
2330 | ||
aef4a983 | 2331 | switch (qtcb->header.fsf_status) { |
1da177e4 | 2332 | case FSF_GOOD: |
2f8f3ed5 | 2333 | zfcp_fsf_exchange_port_evaluate(fsf_req, 1); |
aef4a983 | 2334 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status); |
aef4a983 | 2335 | break; |
aef4a983 | 2336 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
2f8f3ed5 | 2337 | zfcp_fsf_exchange_port_evaluate(fsf_req, 0); |
aef4a983 | 2338 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status); |
aef4a983 MS |
2339 | zfcp_fsf_link_down_info_eval(adapter, |
2340 | &qtcb->header.fsf_status_qual.link_down_info); | |
1da177e4 | 2341 | break; |
1da177e4 | 2342 | default: |
aef4a983 MS |
2343 | debug_text_event(adapter->erp_dbf, 0, "xchg-port-ng"); |
2344 | debug_event(adapter->erp_dbf, 0, | |
1da177e4 LT |
2345 | &fsf_req->qtcb->header.fsf_status, sizeof(u32)); |
2346 | } | |
2347 | } | |
2348 | ||
2349 | ||
2350 | /* | |
2351 | * function: zfcp_fsf_open_port | |
2352 | * | |
2353 | * purpose: | |
2354 | * | |
2355 | * returns: address of initiated FSF request | |
2356 | * NULL - request could not be initiated | |
2357 | */ | |
2358 | int | |
2359 | zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) | |
2360 | { | |
2361 | volatile struct qdio_buffer_element *sbale; | |
2abbe866 | 2362 | struct zfcp_fsf_req *fsf_req; |
1da177e4 LT |
2363 | unsigned long lock_flags; |
2364 | int retval = 0; | |
2365 | ||
2366 | /* setup new FSF request */ | |
2367 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
2368 | FSF_QTCB_OPEN_PORT_WITH_DID, | |
2369 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
2370 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 2371 | &lock_flags, &fsf_req); |
1da177e4 LT |
2372 | if (retval < 0) { |
2373 | ZFCP_LOG_INFO("error: Could not create open port request " | |
2374 | "for port 0x%016Lx on adapter %s.\n", | |
2375 | erp_action->port->wwpn, | |
2376 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2377 | goto out; | |
2378 | } | |
2379 | ||
2abbe866 | 2380 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
2381 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
2382 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2383 | ||
2abbe866 | 2384 | fsf_req->qtcb->bottom.support.d_id = erp_action->port->d_id; |
1da177e4 | 2385 | atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->port->status); |
2abbe866 AH |
2386 | fsf_req->data = (unsigned long) erp_action->port; |
2387 | fsf_req->erp_action = erp_action; | |
2388 | erp_action->fsf_req = fsf_req; | |
1da177e4 | 2389 | |
2abbe866 AH |
2390 | zfcp_erp_start_timer(fsf_req); |
2391 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
2392 | if (retval) { |
2393 | ZFCP_LOG_INFO("error: Could not send open port request for " | |
2394 | "port 0x%016Lx on adapter %s.\n", | |
2395 | erp_action->port->wwpn, | |
2396 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2abbe866 | 2397 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
2398 | erp_action->fsf_req = NULL; |
2399 | goto out; | |
2400 | } | |
2401 | ||
2402 | ZFCP_LOG_DEBUG("open port request initiated " | |
2403 | "(adapter %s, port 0x%016Lx)\n", | |
2404 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2405 | erp_action->port->wwpn); | |
2406 | out: | |
2407 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
2408 | lock_flags); | |
2409 | return retval; | |
2410 | } | |
2411 | ||
2412 | /* | |
2413 | * function: zfcp_fsf_open_port_handler | |
2414 | * | |
2415 | * purpose: is called for finished Open Port command | |
2416 | * | |
2417 | * returns: | |
2418 | */ | |
2419 | static int | |
2420 | zfcp_fsf_open_port_handler(struct zfcp_fsf_req *fsf_req) | |
2421 | { | |
2422 | int retval = -EINVAL; | |
2423 | struct zfcp_port *port; | |
2424 | struct fsf_plogi *plogi; | |
2425 | struct fsf_qtcb_header *header; | |
2426 | u16 subtable, rule, counter; | |
2427 | ||
059c97d0 | 2428 | port = (struct zfcp_port *) fsf_req->data; |
1da177e4 LT |
2429 | header = &fsf_req->qtcb->header; |
2430 | ||
2431 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
2432 | /* don't change port status in our bookkeeping */ | |
2433 | goto skip_fsfstatus; | |
2434 | } | |
2435 | ||
2436 | /* evaluate FSF status in QTCB */ | |
2437 | switch (header->fsf_status) { | |
2438 | ||
2439 | case FSF_PORT_ALREADY_OPEN: | |
1da177e4 LT |
2440 | ZFCP_LOG_NORMAL("bug: remote port 0x%016Lx on adapter %s " |
2441 | "is already open.\n", | |
2442 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2443 | debug_text_exception(fsf_req->adapter->erp_dbf, 0, | |
2444 | "fsf_s_popen"); | |
2445 | /* | |
2446 | * This is a bug, however operation should continue normally | |
2447 | * if it is simply ignored | |
2448 | */ | |
2449 | break; | |
2450 | ||
2451 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
2452 | ZFCP_LOG_NORMAL("Access denied, cannot open port 0x%016Lx " |
2453 | "on adapter %s\n", | |
2454 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2455 | for (counter = 0; counter < 2; counter++) { | |
2456 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
2457 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
2458 | switch (subtable) { | |
2459 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
2460 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
2461 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
2462 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
2463 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
2464 | zfcp_act_subtable_type[subtable], rule); | |
2465 | break; | |
2466 | } | |
2467 | } | |
2468 | debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_access"); | |
2469 | zfcp_erp_port_access_denied(port); | |
2470 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2471 | break; | |
2472 | ||
2473 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: | |
1da177e4 LT |
2474 | ZFCP_LOG_INFO("error: The FSF adapter is out of resources. " |
2475 | "The remote port 0x%016Lx on adapter %s " | |
2476 | "could not be opened. Disabling it.\n", | |
2477 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2478 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
2479 | "fsf_s_max_ports"); | |
2480 | zfcp_erp_port_failed(port); | |
2481 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2482 | break; | |
2483 | ||
2484 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
2485 | switch (header->fsf_status_qual.word[0]) { |
2486 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
2487 | debug_text_event(fsf_req->adapter->erp_dbf, 1, |
2488 | "fsf_sq_ltest"); | |
2489 | /* ERP strategy will escalate */ | |
2490 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2491 | break; | |
2492 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
2493 | /* ERP strategy will escalate */ | |
2494 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
2495 | "fsf_sq_ulp"); | |
2496 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2497 | break; | |
2498 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
1da177e4 LT |
2499 | ZFCP_LOG_NORMAL("The remote port 0x%016Lx on " |
2500 | "adapter %s could not be opened. " | |
2501 | "Disabling it.\n", | |
2502 | port->wwpn, | |
2503 | zfcp_get_busid_by_port(port)); | |
2504 | debug_text_exception(fsf_req->adapter->erp_dbf, 0, | |
2505 | "fsf_sq_no_retry"); | |
2506 | zfcp_erp_port_failed(port); | |
2507 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2508 | break; | |
2509 | default: | |
2510 | ZFCP_LOG_NORMAL | |
2511 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
2512 | header->fsf_status_qual.word[0]); | |
2513 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
2514 | "fsf_sq_inval:"); | |
2515 | debug_exception( | |
2516 | fsf_req->adapter->erp_dbf, 0, | |
2517 | &header->fsf_status_qual.word[0], | |
2518 | sizeof (u32)); | |
2519 | break; | |
2520 | } | |
2521 | break; | |
2522 | ||
2523 | case FSF_GOOD: | |
1da177e4 LT |
2524 | /* save port handle assigned by FSF */ |
2525 | port->handle = header->port_handle; | |
2526 | ZFCP_LOG_INFO("The remote port 0x%016Lx via adapter %s " | |
2527 | "was opened, it's port handle is 0x%x\n", | |
2528 | port->wwpn, zfcp_get_busid_by_port(port), | |
2529 | port->handle); | |
2530 | /* mark port as open */ | |
2531 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN | | |
2532 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
d736a27b AH |
2533 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
2534 | ZFCP_STATUS_COMMON_ACCESS_BOXED, | |
2535 | &port->status); | |
1da177e4 LT |
2536 | retval = 0; |
2537 | /* check whether D_ID has changed during open */ | |
2538 | /* | |
2539 | * FIXME: This check is not airtight, as the FCP channel does | |
2540 | * not monitor closures of target port connections caused on | |
2541 | * the remote side. Thus, they might miss out on invalidating | |
2542 | * locally cached WWPNs (and other N_Port parameters) of gone | |
2543 | * target ports. So, our heroic attempt to make things safe | |
2544 | * could be undermined by 'open port' response data tagged with | |
2545 | * obsolete WWPNs. Another reason to monitor potential | |
2546 | * connection closures ourself at least (by interpreting | |
2547 | * incoming ELS' and unsolicited status). It just crosses my | |
2548 | * mind that one should be able to cross-check by means of | |
2549 | * another GID_PN straight after a port has been opened. | |
2550 | * Alternately, an ADISC/PDISC ELS should suffice, as well. | |
2551 | */ | |
2552 | plogi = (struct fsf_plogi *) fsf_req->qtcb->bottom.support.els; | |
2553 | if (!atomic_test_mask(ZFCP_STATUS_PORT_NO_WWPN, &port->status)) | |
2554 | { | |
2555 | if (fsf_req->qtcb->bottom.support.els1_length < | |
75bfc283 | 2556 | sizeof (struct fsf_plogi)) { |
1da177e4 LT |
2557 | ZFCP_LOG_INFO( |
2558 | "warning: insufficient length of " | |
2559 | "PLOGI payload (%i)\n", | |
2560 | fsf_req->qtcb->bottom.support.els1_length); | |
2561 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
2562 | "fsf_s_short_plogi:"); | |
2563 | /* skip sanity check and assume wwpn is ok */ | |
2564 | } else { | |
2565 | if (plogi->serv_param.wwpn != port->wwpn) { | |
2566 | ZFCP_LOG_INFO("warning: d_id of port " | |
2567 | "0x%016Lx changed during " | |
2568 | "open\n", port->wwpn); | |
2569 | debug_text_event( | |
2570 | fsf_req->adapter->erp_dbf, 0, | |
2571 | "fsf_s_did_change:"); | |
2572 | atomic_clear_mask( | |
2573 | ZFCP_STATUS_PORT_DID_DID, | |
2574 | &port->status); | |
75bfc283 | 2575 | } else { |
1da177e4 | 2576 | port->wwnn = plogi->serv_param.wwnn; |
75bfc283 RW |
2577 | zfcp_plogi_evaluate(port, plogi); |
2578 | } | |
1da177e4 LT |
2579 | } |
2580 | } | |
2581 | break; | |
2582 | ||
2583 | case FSF_UNKNOWN_OP_SUBTYPE: | |
2584 | /* should never occure, subtype not set in zfcp_fsf_open_port */ | |
1da177e4 LT |
2585 | ZFCP_LOG_INFO("unknown operation subtype (adapter: %s, " |
2586 | "op_subtype=0x%x)\n", | |
2587 | zfcp_get_busid_by_port(port), | |
2588 | fsf_req->qtcb->bottom.support.operation_subtype); | |
2589 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2590 | break; | |
2591 | ||
2592 | default: | |
2593 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
2594 | "(debug info 0x%x)\n", | |
2595 | header->fsf_status); | |
2596 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:"); | |
2597 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
2598 | &header->fsf_status, sizeof (u32)); | |
2599 | break; | |
2600 | } | |
2601 | ||
2602 | skip_fsfstatus: | |
2603 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &port->status); | |
2604 | return retval; | |
2605 | } | |
2606 | ||
2607 | /* | |
2608 | * function: zfcp_fsf_close_port | |
2609 | * | |
2610 | * purpose: submit FSF command "close port" | |
2611 | * | |
2612 | * returns: address of initiated FSF request | |
2613 | * NULL - request could not be initiated | |
2614 | */ | |
2615 | int | |
2616 | zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) | |
2617 | { | |
2618 | volatile struct qdio_buffer_element *sbale; | |
2abbe866 | 2619 | struct zfcp_fsf_req *fsf_req; |
1da177e4 LT |
2620 | unsigned long lock_flags; |
2621 | int retval = 0; | |
2622 | ||
2623 | /* setup new FSF request */ | |
2624 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
2625 | FSF_QTCB_CLOSE_PORT, | |
2626 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
2627 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 2628 | &lock_flags, &fsf_req); |
1da177e4 LT |
2629 | if (retval < 0) { |
2630 | ZFCP_LOG_INFO("error: Could not create a close port request " | |
2631 | "for port 0x%016Lx on adapter %s.\n", | |
2632 | erp_action->port->wwpn, | |
2633 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2634 | goto out; | |
2635 | } | |
2636 | ||
2abbe866 | 2637 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
2638 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
2639 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2640 | ||
2641 | atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->port->status); | |
2abbe866 AH |
2642 | fsf_req->data = (unsigned long) erp_action->port; |
2643 | fsf_req->erp_action = erp_action; | |
2644 | fsf_req->qtcb->header.port_handle = erp_action->port->handle; | |
2645 | fsf_req->erp_action = erp_action; | |
2646 | erp_action->fsf_req = fsf_req; | |
2647 | ||
2648 | zfcp_erp_start_timer(fsf_req); | |
2649 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
2650 | if (retval) { |
2651 | ZFCP_LOG_INFO("error: Could not send a close port request for " | |
2652 | "port 0x%016Lx on adapter %s.\n", | |
2653 | erp_action->port->wwpn, | |
2654 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2abbe866 | 2655 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
2656 | erp_action->fsf_req = NULL; |
2657 | goto out; | |
2658 | } | |
2659 | ||
2660 | ZFCP_LOG_TRACE("close port request initiated " | |
2661 | "(adapter %s, port 0x%016Lx)\n", | |
2662 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2663 | erp_action->port->wwpn); | |
2664 | out: | |
2665 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
2666 | lock_flags); | |
2667 | return retval; | |
2668 | } | |
2669 | ||
2670 | /* | |
2671 | * function: zfcp_fsf_close_port_handler | |
2672 | * | |
2673 | * purpose: is called for finished Close Port FSF command | |
2674 | * | |
2675 | * returns: | |
2676 | */ | |
2677 | static int | |
2678 | zfcp_fsf_close_port_handler(struct zfcp_fsf_req *fsf_req) | |
2679 | { | |
2680 | int retval = -EINVAL; | |
2681 | struct zfcp_port *port; | |
2682 | ||
059c97d0 | 2683 | port = (struct zfcp_port *) fsf_req->data; |
1da177e4 LT |
2684 | |
2685 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
2686 | /* don't change port status in our bookkeeping */ | |
2687 | goto skip_fsfstatus; | |
2688 | } | |
2689 | ||
2690 | /* evaluate FSF status in QTCB */ | |
2691 | switch (fsf_req->qtcb->header.fsf_status) { | |
2692 | ||
2693 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
2694 | ZFCP_LOG_INFO("Temporary port identifier 0x%x for port " |
2695 | "0x%016Lx on adapter %s invalid. This may happen " | |
2696 | "occasionally.\n", port->handle, | |
2697 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2698 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
2699 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
2700 | (char *) &fsf_req->qtcb->header.fsf_status_qual, | |
2701 | sizeof (union fsf_status_qual)); | |
2702 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
2703 | "fsf_s_phand_nv"); | |
2704 | zfcp_erp_adapter_reopen(port->adapter, 0); | |
2705 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2706 | break; | |
2707 | ||
2708 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
2709 | /* Note: FSF has actually closed the port in this case. |
2710 | * The status code is just daft. Fingers crossed for a change | |
2711 | */ | |
2712 | retval = 0; | |
2713 | break; | |
2714 | ||
2715 | case FSF_GOOD: | |
1da177e4 LT |
2716 | ZFCP_LOG_TRACE("remote port 0x016%Lx on adapter %s closed, " |
2717 | "port handle 0x%x\n", port->wwpn, | |
2718 | zfcp_get_busid_by_port(port), port->handle); | |
2719 | zfcp_erp_modify_port_status(port, | |
2720 | ZFCP_STATUS_COMMON_OPEN, | |
2721 | ZFCP_CLEAR); | |
2722 | retval = 0; | |
2723 | break; | |
2724 | ||
2725 | default: | |
2726 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
2727 | "(debug info 0x%x)\n", | |
2728 | fsf_req->qtcb->header.fsf_status); | |
2729 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:"); | |
2730 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
2731 | &fsf_req->qtcb->header.fsf_status, | |
2732 | sizeof (u32)); | |
2733 | break; | |
2734 | } | |
2735 | ||
2736 | skip_fsfstatus: | |
2737 | atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &port->status); | |
2738 | return retval; | |
2739 | } | |
2740 | ||
2741 | /* | |
2742 | * function: zfcp_fsf_close_physical_port | |
2743 | * | |
2744 | * purpose: submit FSF command "close physical port" | |
2745 | * | |
2746 | * returns: address of initiated FSF request | |
2747 | * NULL - request could not be initiated | |
2748 | */ | |
2749 | int | |
2750 | zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) | |
2751 | { | |
1da177e4 | 2752 | volatile struct qdio_buffer_element *sbale; |
2abbe866 AH |
2753 | struct zfcp_fsf_req *fsf_req; |
2754 | unsigned long lock_flags; | |
2755 | int retval = 0; | |
1da177e4 LT |
2756 | |
2757 | /* setup new FSF request */ | |
2758 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
2759 | FSF_QTCB_CLOSE_PHYSICAL_PORT, | |
2760 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
2761 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 2762 | &lock_flags, &fsf_req); |
1da177e4 LT |
2763 | if (retval < 0) { |
2764 | ZFCP_LOG_INFO("error: Could not create close physical port " | |
2765 | "request (adapter %s, port 0x%016Lx)\n", | |
2766 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2767 | erp_action->port->wwpn); | |
2768 | ||
2769 | goto out; | |
2770 | } | |
2771 | ||
2abbe866 | 2772 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
2773 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
2774 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2775 | ||
2776 | /* mark port as being closed */ | |
2777 | atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, | |
2778 | &erp_action->port->status); | |
2779 | /* save a pointer to this port */ | |
2abbe866 AH |
2780 | fsf_req->data = (unsigned long) erp_action->port; |
2781 | fsf_req->qtcb->header.port_handle = erp_action->port->handle; | |
2782 | fsf_req->erp_action = erp_action; | |
2783 | erp_action->fsf_req = fsf_req; | |
2784 | ||
2785 | zfcp_erp_start_timer(fsf_req); | |
2786 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
2787 | if (retval) { |
2788 | ZFCP_LOG_INFO("error: Could not send close physical port " | |
2789 | "request (adapter %s, port 0x%016Lx)\n", | |
2790 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2791 | erp_action->port->wwpn); | |
2abbe866 | 2792 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
2793 | erp_action->fsf_req = NULL; |
2794 | goto out; | |
2795 | } | |
2796 | ||
2797 | ZFCP_LOG_TRACE("close physical port request initiated " | |
2798 | "(adapter %s, port 0x%016Lx)\n", | |
2799 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2800 | erp_action->port->wwpn); | |
2801 | out: | |
2802 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
2803 | lock_flags); | |
2804 | return retval; | |
2805 | } | |
2806 | ||
2807 | /* | |
2808 | * function: zfcp_fsf_close_physical_port_handler | |
2809 | * | |
2810 | * purpose: is called for finished Close Physical Port FSF command | |
2811 | * | |
2812 | * returns: | |
2813 | */ | |
2814 | static int | |
2815 | zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *fsf_req) | |
2816 | { | |
2817 | int retval = -EINVAL; | |
2818 | struct zfcp_port *port; | |
2819 | struct zfcp_unit *unit; | |
2820 | struct fsf_qtcb_header *header; | |
2821 | u16 subtable, rule, counter; | |
2822 | ||
059c97d0 | 2823 | port = (struct zfcp_port *) fsf_req->data; |
1da177e4 LT |
2824 | header = &fsf_req->qtcb->header; |
2825 | ||
2826 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
2827 | /* don't change port status in our bookkeeping */ | |
2828 | goto skip_fsfstatus; | |
2829 | } | |
2830 | ||
2831 | /* evaluate FSF status in QTCB */ | |
2832 | switch (header->fsf_status) { | |
2833 | ||
2834 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
2835 | ZFCP_LOG_INFO("Temporary port identifier 0x%x invalid" |
2836 | "(adapter %s, port 0x%016Lx). " | |
2837 | "This may happen occasionally.\n", | |
2838 | port->handle, | |
2839 | zfcp_get_busid_by_port(port), | |
2840 | port->wwpn); | |
2841 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
2842 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
2843 | (char *) &header->fsf_status_qual, | |
2844 | sizeof (union fsf_status_qual)); | |
2845 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
2846 | "fsf_s_phand_nv"); | |
2847 | zfcp_erp_adapter_reopen(port->adapter, 0); | |
2848 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2849 | break; | |
2850 | ||
2851 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
2852 | ZFCP_LOG_NORMAL("Access denied, cannot close " |
2853 | "physical port 0x%016Lx on adapter %s\n", | |
2854 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2855 | for (counter = 0; counter < 2; counter++) { | |
2856 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
2857 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
2858 | switch (subtable) { | |
2859 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
2860 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
2861 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
2862 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
2863 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
2864 | zfcp_act_subtable_type[subtable], rule); | |
2865 | break; | |
2866 | } | |
2867 | } | |
2868 | debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_access"); | |
2869 | zfcp_erp_port_access_denied(port); | |
2870 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2871 | break; | |
2872 | ||
2873 | case FSF_PORT_BOXED: | |
1da177e4 LT |
2874 | ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter " |
2875 | "%s needs to be reopened but it was attempted " | |
2876 | "to close it physically.\n", | |
2877 | port->wwpn, | |
2878 | zfcp_get_busid_by_port(port)); | |
2879 | debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_pboxed"); | |
d736a27b | 2880 | zfcp_erp_port_boxed(port); |
1da177e4 LT |
2881 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
2882 | ZFCP_STATUS_FSFREQ_RETRY; | |
2883 | break; | |
2884 | ||
2885 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
2886 | switch (header->fsf_status_qual.word[0]) { |
2887 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
2888 | debug_text_event(fsf_req->adapter->erp_dbf, 1, |
2889 | "fsf_sq_ltest"); | |
2890 | /* This will now be escalated by ERP */ | |
2891 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2892 | break; | |
2893 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
2894 | /* ERP strategy will escalate */ |
2895 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
2896 | "fsf_sq_ulp"); | |
2897 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2898 | break; | |
2899 | default: | |
2900 | ZFCP_LOG_NORMAL | |
2901 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
2902 | header->fsf_status_qual.word[0]); | |
2903 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
2904 | "fsf_sq_inval:"); | |
2905 | debug_exception( | |
2906 | fsf_req->adapter->erp_dbf, 0, | |
2907 | &header->fsf_status_qual.word[0], sizeof (u32)); | |
2908 | break; | |
2909 | } | |
2910 | break; | |
2911 | ||
2912 | case FSF_GOOD: | |
1da177e4 LT |
2913 | ZFCP_LOG_DEBUG("Remote port 0x%016Lx via adapter %s " |
2914 | "physically closed, port handle 0x%x\n", | |
2915 | port->wwpn, | |
2916 | zfcp_get_busid_by_port(port), port->handle); | |
2917 | /* can't use generic zfcp_erp_modify_port_status because | |
2918 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port | |
2919 | */ | |
2920 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
2921 | list_for_each_entry(unit, &port->unit_list_head, list) | |
2922 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); | |
2923 | retval = 0; | |
2924 | break; | |
2925 | ||
2926 | default: | |
2927 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
2928 | "(debug info 0x%x)\n", | |
2929 | header->fsf_status); | |
2930 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:"); | |
2931 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
2932 | &header->fsf_status, sizeof (u32)); | |
2933 | break; | |
2934 | } | |
2935 | ||
2936 | skip_fsfstatus: | |
2937 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, &port->status); | |
2938 | return retval; | |
2939 | } | |
2940 | ||
2941 | /* | |
2942 | * function: zfcp_fsf_open_unit | |
2943 | * | |
2944 | * purpose: | |
2945 | * | |
2946 | * returns: | |
2947 | * | |
2948 | * assumptions: This routine does not check whether the associated | |
2949 | * remote port has already been opened. This should be | |
2950 | * done by calling routines. Otherwise some status | |
2951 | * may be presented by FSF | |
2952 | */ | |
2953 | int | |
2954 | zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) | |
2955 | { | |
2956 | volatile struct qdio_buffer_element *sbale; | |
2abbe866 | 2957 | struct zfcp_fsf_req *fsf_req; |
1da177e4 LT |
2958 | unsigned long lock_flags; |
2959 | int retval = 0; | |
2960 | ||
2961 | /* setup new FSF request */ | |
2962 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
2963 | FSF_QTCB_OPEN_LUN, | |
2964 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
2965 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 2966 | &lock_flags, &fsf_req); |
1da177e4 LT |
2967 | if (retval < 0) { |
2968 | ZFCP_LOG_INFO("error: Could not create open unit request for " | |
2969 | "unit 0x%016Lx on port 0x%016Lx on adapter %s.\n", | |
2970 | erp_action->unit->fcp_lun, | |
2971 | erp_action->unit->port->wwpn, | |
2972 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2973 | goto out; | |
2974 | } | |
2975 | ||
2abbe866 | 2976 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
2977 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
2978 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2979 | ||
2abbe866 AH |
2980 | fsf_req->qtcb->header.port_handle = erp_action->port->handle; |
2981 | fsf_req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun; | |
aef4a983 | 2982 | if (!(erp_action->adapter->connection_features & FSF_FEATURE_NPIV_MODE)) |
2abbe866 | 2983 | fsf_req->qtcb->bottom.support.option = |
06506d00 | 2984 | FSF_OPEN_LUN_SUPPRESS_BOXING; |
1da177e4 | 2985 | atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->unit->status); |
2abbe866 AH |
2986 | fsf_req->data = (unsigned long) erp_action->unit; |
2987 | fsf_req->erp_action = erp_action; | |
2988 | erp_action->fsf_req = fsf_req; | |
1da177e4 | 2989 | |
2abbe866 AH |
2990 | zfcp_erp_start_timer(fsf_req); |
2991 | retval = zfcp_fsf_req_send(erp_action->fsf_req); | |
1da177e4 LT |
2992 | if (retval) { |
2993 | ZFCP_LOG_INFO("error: Could not send an open unit request " | |
2994 | "on the adapter %s, port 0x%016Lx for " | |
2995 | "unit 0x%016Lx\n", | |
2996 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2997 | erp_action->port->wwpn, | |
2998 | erp_action->unit->fcp_lun); | |
2abbe866 | 2999 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
3000 | erp_action->fsf_req = NULL; |
3001 | goto out; | |
3002 | } | |
3003 | ||
3004 | ZFCP_LOG_TRACE("Open LUN request initiated (adapter %s, " | |
3005 | "port 0x%016Lx, unit 0x%016Lx)\n", | |
3006 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
3007 | erp_action->port->wwpn, erp_action->unit->fcp_lun); | |
3008 | out: | |
3009 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
3010 | lock_flags); | |
3011 | return retval; | |
3012 | } | |
3013 | ||
3014 | /* | |
3015 | * function: zfcp_fsf_open_unit_handler | |
3016 | * | |
3017 | * purpose: is called for finished Open LUN command | |
3018 | * | |
3019 | * returns: | |
3020 | */ | |
3021 | static int | |
3022 | zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *fsf_req) | |
3023 | { | |
3024 | int retval = -EINVAL; | |
3025 | struct zfcp_adapter *adapter; | |
3026 | struct zfcp_unit *unit; | |
3027 | struct fsf_qtcb_header *header; | |
3028 | struct fsf_qtcb_bottom_support *bottom; | |
3029 | struct fsf_queue_designator *queue_designator; | |
3030 | u16 subtable, rule, counter; | |
aef4a983 | 3031 | int exclusive, readwrite; |
1da177e4 | 3032 | |
059c97d0 | 3033 | unit = (struct zfcp_unit *) fsf_req->data; |
1da177e4 LT |
3034 | |
3035 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
3036 | /* don't change unit status in our bookkeeping */ | |
3037 | goto skip_fsfstatus; | |
3038 | } | |
3039 | ||
3040 | adapter = fsf_req->adapter; | |
3041 | header = &fsf_req->qtcb->header; | |
3042 | bottom = &fsf_req->qtcb->bottom.support; | |
3043 | queue_designator = &header->fsf_status_qual.fsf_queue_designator; | |
3044 | ||
1da177e4 LT |
3045 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
3046 | ZFCP_STATUS_UNIT_SHARED | | |
3047 | ZFCP_STATUS_UNIT_READONLY, | |
3048 | &unit->status); | |
3049 | ||
3050 | /* evaluate FSF status in QTCB */ | |
3051 | switch (header->fsf_status) { | |
3052 | ||
3053 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
3054 | ZFCP_LOG_INFO("Temporary port identifier 0x%x " |
3055 | "for port 0x%016Lx on adapter %s invalid " | |
3056 | "This may happen occasionally\n", | |
3057 | unit->port->handle, | |
3058 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3059 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
3060 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3061 | (char *) &header->fsf_status_qual, | |
3062 | sizeof (union fsf_status_qual)); | |
3063 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_ph_nv"); | |
3064 | zfcp_erp_adapter_reopen(unit->port->adapter, 0); | |
3065 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3066 | break; | |
3067 | ||
3068 | case FSF_LUN_ALREADY_OPEN: | |
1da177e4 LT |
3069 | ZFCP_LOG_NORMAL("bug: Attempted to open unit 0x%016Lx on " |
3070 | "remote port 0x%016Lx on adapter %s twice.\n", | |
3071 | unit->fcp_lun, | |
3072 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3073 | debug_text_exception(adapter->erp_dbf, 0, | |
3074 | "fsf_s_uopen"); | |
3075 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3076 | break; | |
3077 | ||
3078 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
3079 | ZFCP_LOG_NORMAL("Access denied, cannot open unit 0x%016Lx on " |
3080 | "remote port 0x%016Lx on adapter %s\n", | |
3081 | unit->fcp_lun, unit->port->wwpn, | |
3082 | zfcp_get_busid_by_unit(unit)); | |
3083 | for (counter = 0; counter < 2; counter++) { | |
3084 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
3085 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
3086 | switch (subtable) { | |
3087 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
3088 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
3089 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
3090 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
3091 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
3092 | zfcp_act_subtable_type[subtable], rule); | |
3093 | break; | |
3094 | } | |
3095 | } | |
3096 | debug_text_event(adapter->erp_dbf, 1, "fsf_s_access"); | |
3097 | zfcp_erp_unit_access_denied(unit); | |
3098 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); | |
3099 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); | |
3100 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3101 | break; | |
3102 | ||
3103 | case FSF_PORT_BOXED: | |
1da177e4 LT |
3104 | ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s " |
3105 | "needs to be reopened\n", | |
3106 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3107 | debug_text_event(adapter->erp_dbf, 2, "fsf_s_pboxed"); | |
d736a27b | 3108 | zfcp_erp_port_boxed(unit->port); |
1da177e4 LT |
3109 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
3110 | ZFCP_STATUS_FSFREQ_RETRY; | |
3111 | break; | |
3112 | ||
3113 | case FSF_LUN_SHARING_VIOLATION: | |
1da177e4 LT |
3114 | if (header->fsf_status_qual.word[0] != 0) { |
3115 | ZFCP_LOG_NORMAL("FCP-LUN 0x%Lx at the remote port " | |
3116 | "with WWPN 0x%Lx " | |
3117 | "connected to the adapter %s " | |
3118 | "is already in use in LPAR%d, CSS%d\n", | |
3119 | unit->fcp_lun, | |
3120 | unit->port->wwpn, | |
3121 | zfcp_get_busid_by_unit(unit), | |
3122 | queue_designator->hla, | |
3123 | queue_designator->cssid); | |
3124 | } else { | |
3125 | subtable = header->fsf_status_qual.halfword[4]; | |
3126 | rule = header->fsf_status_qual.halfword[5]; | |
3127 | switch (subtable) { | |
3128 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
3129 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
3130 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
3131 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
3132 | ZFCP_LOG_NORMAL("Access to FCP-LUN 0x%Lx at the " | |
3133 | "remote port with WWPN 0x%Lx " | |
3134 | "connected to the adapter %s " | |
3135 | "is denied (%s rule %d)\n", | |
3136 | unit->fcp_lun, | |
3137 | unit->port->wwpn, | |
3138 | zfcp_get_busid_by_unit(unit), | |
3139 | zfcp_act_subtable_type[subtable], | |
3140 | rule); | |
3141 | break; | |
3142 | } | |
3143 | } | |
3144 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
3145 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3146 | (char *) &header->fsf_status_qual, | |
3147 | sizeof (union fsf_status_qual)); | |
3148 | debug_text_event(adapter->erp_dbf, 2, | |
3149 | "fsf_s_l_sh_vio"); | |
3150 | zfcp_erp_unit_access_denied(unit); | |
3151 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); | |
3152 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); | |
3153 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3154 | break; | |
3155 | ||
3156 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: | |
1da177e4 LT |
3157 | ZFCP_LOG_INFO("error: The adapter ran out of resources. " |
3158 | "There is no handle (temporary port identifier) " | |
3159 | "available for unit 0x%016Lx on port 0x%016Lx " | |
3160 | "on adapter %s\n", | |
3161 | unit->fcp_lun, | |
3162 | unit->port->wwpn, | |
3163 | zfcp_get_busid_by_unit(unit)); | |
3164 | debug_text_event(adapter->erp_dbf, 1, | |
3165 | "fsf_s_max_units"); | |
3166 | zfcp_erp_unit_failed(unit); | |
3167 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3168 | break; | |
3169 | ||
3170 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
3171 | switch (header->fsf_status_qual.word[0]) { |
3172 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
3173 | /* Re-establish link to port */ |
3174 | debug_text_event(adapter->erp_dbf, 1, | |
3175 | "fsf_sq_ltest"); | |
65a8d4e1 | 3176 | zfcp_test_link(unit->port); |
1da177e4 LT |
3177 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3178 | break; | |
3179 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
3180 | /* ERP strategy will escalate */ |
3181 | debug_text_event(adapter->erp_dbf, 1, | |
3182 | "fsf_sq_ulp"); | |
3183 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3184 | break; | |
3185 | default: | |
3186 | ZFCP_LOG_NORMAL | |
3187 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
3188 | header->fsf_status_qual.word[0]); | |
3189 | debug_text_event(adapter->erp_dbf, 0, | |
3190 | "fsf_sq_inval:"); | |
3191 | debug_exception(adapter->erp_dbf, 0, | |
3192 | &header->fsf_status_qual.word[0], | |
3193 | sizeof (u32)); | |
3194 | } | |
3195 | break; | |
3196 | ||
3197 | case FSF_INVALID_COMMAND_OPTION: | |
1da177e4 LT |
3198 | ZFCP_LOG_NORMAL( |
3199 | "Invalid option 0x%x has been specified " | |
3200 | "in QTCB bottom sent to the adapter %s\n", | |
3201 | bottom->option, | |
3202 | zfcp_get_busid_by_adapter(adapter)); | |
3203 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3204 | retval = -EINVAL; | |
3205 | break; | |
3206 | ||
3207 | case FSF_GOOD: | |
1da177e4 LT |
3208 | /* save LUN handle assigned by FSF */ |
3209 | unit->handle = header->lun_handle; | |
3210 | ZFCP_LOG_TRACE("unit 0x%016Lx on remote port 0x%016Lx on " | |
3211 | "adapter %s opened, port handle 0x%x\n", | |
3212 | unit->fcp_lun, | |
3213 | unit->port->wwpn, | |
3214 | zfcp_get_busid_by_unit(unit), | |
3215 | unit->handle); | |
3216 | /* mark unit as open */ | |
3217 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); | |
aef4a983 MS |
3218 | |
3219 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) && | |
3220 | (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) && | |
3221 | (adapter->ccw_device->id.dev_model != ZFCP_DEVICE_MODEL_PRIV)) { | |
3222 | exclusive = (bottom->lun_access_info & | |
3223 | FSF_UNIT_ACCESS_EXCLUSIVE); | |
3224 | readwrite = (bottom->lun_access_info & | |
3225 | FSF_UNIT_ACCESS_OUTBOUND_TRANSFER); | |
3226 | ||
1da177e4 LT |
3227 | if (!exclusive) |
3228 | atomic_set_mask(ZFCP_STATUS_UNIT_SHARED, | |
3229 | &unit->status); | |
3230 | ||
3231 | if (!readwrite) { | |
3232 | atomic_set_mask(ZFCP_STATUS_UNIT_READONLY, | |
3233 | &unit->status); | |
3234 | ZFCP_LOG_NORMAL("read-only access for unit " | |
3235 | "(adapter %s, wwpn=0x%016Lx, " | |
3236 | "fcp_lun=0x%016Lx)\n", | |
3237 | zfcp_get_busid_by_unit(unit), | |
3238 | unit->port->wwpn, | |
3239 | unit->fcp_lun); | |
3240 | } | |
3241 | ||
3242 | if (exclusive && !readwrite) { | |
3243 | ZFCP_LOG_NORMAL("exclusive access of read-only " | |
3244 | "unit not supported\n"); | |
3245 | zfcp_erp_unit_failed(unit); | |
3246 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3247 | zfcp_erp_unit_shutdown(unit, 0); | |
3248 | } else if (!exclusive && readwrite) { | |
3249 | ZFCP_LOG_NORMAL("shared access of read-write " | |
3250 | "unit not supported\n"); | |
3251 | zfcp_erp_unit_failed(unit); | |
3252 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3253 | zfcp_erp_unit_shutdown(unit, 0); | |
3254 | } | |
3255 | } | |
3256 | ||
3257 | retval = 0; | |
3258 | break; | |
3259 | ||
3260 | default: | |
3261 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
3262 | "(debug info 0x%x)\n", | |
3263 | header->fsf_status); | |
3264 | debug_text_event(adapter->erp_dbf, 0, "fsf_s_inval:"); | |
3265 | debug_exception(adapter->erp_dbf, 0, | |
3266 | &header->fsf_status, sizeof (u32)); | |
3267 | break; | |
3268 | } | |
3269 | ||
3270 | skip_fsfstatus: | |
3271 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &unit->status); | |
3272 | return retval; | |
3273 | } | |
3274 | ||
3275 | /* | |
3276 | * function: zfcp_fsf_close_unit | |
3277 | * | |
3278 | * purpose: | |
3279 | * | |
3280 | * returns: address of fsf_req - request successfully initiated | |
3281 | * NULL - | |
3282 | * | |
3283 | * assumptions: This routine does not check whether the associated | |
3284 | * remote port/lun has already been opened. This should be | |
3285 | * done by calling routines. Otherwise some status | |
3286 | * may be presented by FSF | |
3287 | */ | |
3288 | int | |
3289 | zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) | |
3290 | { | |
3291 | volatile struct qdio_buffer_element *sbale; | |
2abbe866 | 3292 | struct zfcp_fsf_req *fsf_req; |
1da177e4 LT |
3293 | unsigned long lock_flags; |
3294 | int retval = 0; | |
3295 | ||
3296 | /* setup new FSF request */ | |
3297 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
3298 | FSF_QTCB_CLOSE_LUN, | |
3299 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
3300 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 3301 | &lock_flags, &fsf_req); |
1da177e4 LT |
3302 | if (retval < 0) { |
3303 | ZFCP_LOG_INFO("error: Could not create close unit request for " | |
3304 | "unit 0x%016Lx on port 0x%016Lx on adapter %s.\n", | |
3305 | erp_action->unit->fcp_lun, | |
3306 | erp_action->port->wwpn, | |
3307 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
3308 | goto out; | |
3309 | } | |
3310 | ||
2abbe866 | 3311 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
3312 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
3313 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
3314 | ||
2abbe866 AH |
3315 | fsf_req->qtcb->header.port_handle = erp_action->port->handle; |
3316 | fsf_req->qtcb->header.lun_handle = erp_action->unit->handle; | |
1da177e4 | 3317 | atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->unit->status); |
2abbe866 AH |
3318 | fsf_req->data = (unsigned long) erp_action->unit; |
3319 | fsf_req->erp_action = erp_action; | |
3320 | erp_action->fsf_req = fsf_req; | |
1da177e4 | 3321 | |
2abbe866 AH |
3322 | zfcp_erp_start_timer(fsf_req); |
3323 | retval = zfcp_fsf_req_send(erp_action->fsf_req); | |
1da177e4 LT |
3324 | if (retval) { |
3325 | ZFCP_LOG_INFO("error: Could not send a close unit request for " | |
3326 | "unit 0x%016Lx on port 0x%016Lx onadapter %s.\n", | |
3327 | erp_action->unit->fcp_lun, | |
3328 | erp_action->port->wwpn, | |
3329 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2abbe866 | 3330 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
3331 | erp_action->fsf_req = NULL; |
3332 | goto out; | |
3333 | } | |
3334 | ||
3335 | ZFCP_LOG_TRACE("Close LUN request initiated (adapter %s, " | |
3336 | "port 0x%016Lx, unit 0x%016Lx)\n", | |
3337 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
3338 | erp_action->port->wwpn, erp_action->unit->fcp_lun); | |
3339 | out: | |
3340 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
3341 | lock_flags); | |
3342 | return retval; | |
3343 | } | |
3344 | ||
3345 | /* | |
3346 | * function: zfcp_fsf_close_unit_handler | |
3347 | * | |
3348 | * purpose: is called for finished Close LUN FSF command | |
3349 | * | |
3350 | * returns: | |
3351 | */ | |
3352 | static int | |
3353 | zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *fsf_req) | |
3354 | { | |
3355 | int retval = -EINVAL; | |
3356 | struct zfcp_unit *unit; | |
3357 | ||
059c97d0 | 3358 | unit = (struct zfcp_unit *) fsf_req->data; |
1da177e4 LT |
3359 | |
3360 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
3361 | /* don't change unit status in our bookkeeping */ | |
3362 | goto skip_fsfstatus; | |
3363 | } | |
3364 | ||
3365 | /* evaluate FSF status in QTCB */ | |
3366 | switch (fsf_req->qtcb->header.fsf_status) { | |
3367 | ||
3368 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
3369 | ZFCP_LOG_INFO("Temporary port identifier 0x%x for port " |
3370 | "0x%016Lx on adapter %s invalid. This may " | |
3371 | "happen in rare circumstances\n", | |
3372 | unit->port->handle, | |
3373 | unit->port->wwpn, | |
3374 | zfcp_get_busid_by_unit(unit)); | |
3375 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
3376 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3377 | (char *) &fsf_req->qtcb->header.fsf_status_qual, | |
3378 | sizeof (union fsf_status_qual)); | |
3379 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3380 | "fsf_s_phand_nv"); | |
3381 | zfcp_erp_adapter_reopen(unit->port->adapter, 0); | |
1da177e4 LT |
3382 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3383 | break; | |
3384 | ||
3385 | case FSF_LUN_HANDLE_NOT_VALID: | |
1da177e4 LT |
3386 | ZFCP_LOG_INFO("Temporary LUN identifier 0x%x of unit " |
3387 | "0x%016Lx on port 0x%016Lx on adapter %s is " | |
3388 | "invalid. This may happen occasionally.\n", | |
3389 | unit->handle, | |
3390 | unit->fcp_lun, | |
3391 | unit->port->wwpn, | |
3392 | zfcp_get_busid_by_unit(unit)); | |
3393 | ZFCP_LOG_DEBUG("Status qualifier data:\n"); | |
3394 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3395 | (char *) &fsf_req->qtcb->header.fsf_status_qual, | |
3396 | sizeof (union fsf_status_qual)); | |
3397 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3398 | "fsf_s_lhand_nv"); | |
3399 | zfcp_erp_port_reopen(unit->port, 0); | |
1da177e4 LT |
3400 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3401 | break; | |
3402 | ||
3403 | case FSF_PORT_BOXED: | |
1da177e4 LT |
3404 | ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s " |
3405 | "needs to be reopened\n", | |
3406 | unit->port->wwpn, | |
3407 | zfcp_get_busid_by_unit(unit)); | |
3408 | debug_text_event(fsf_req->adapter->erp_dbf, 2, "fsf_s_pboxed"); | |
d736a27b | 3409 | zfcp_erp_port_boxed(unit->port); |
1da177e4 LT |
3410 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
3411 | ZFCP_STATUS_FSFREQ_RETRY; | |
3412 | break; | |
3413 | ||
3414 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
3415 | switch (fsf_req->qtcb->header.fsf_status_qual.word[0]) { |
3416 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
3417 | /* re-establish link to port */ |
3418 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3419 | "fsf_sq_ltest"); | |
65a8d4e1 | 3420 | zfcp_test_link(unit->port); |
1da177e4 LT |
3421 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3422 | break; | |
3423 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
3424 | /* ERP strategy will escalate */ |
3425 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3426 | "fsf_sq_ulp"); | |
3427 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3428 | break; | |
3429 | default: | |
3430 | ZFCP_LOG_NORMAL | |
3431 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
3432 | fsf_req->qtcb->header.fsf_status_qual.word[0]); | |
3433 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
3434 | "fsf_sq_inval:"); | |
3435 | debug_exception( | |
3436 | fsf_req->adapter->erp_dbf, 0, | |
3437 | &fsf_req->qtcb->header.fsf_status_qual.word[0], | |
3438 | sizeof (u32)); | |
3439 | break; | |
3440 | } | |
3441 | break; | |
3442 | ||
3443 | case FSF_GOOD: | |
1da177e4 LT |
3444 | ZFCP_LOG_TRACE("unit 0x%016Lx on port 0x%016Lx on adapter %s " |
3445 | "closed, port handle 0x%x\n", | |
3446 | unit->fcp_lun, | |
3447 | unit->port->wwpn, | |
3448 | zfcp_get_busid_by_unit(unit), | |
3449 | unit->handle); | |
3450 | /* mark unit as closed */ | |
3451 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); | |
3452 | retval = 0; | |
3453 | break; | |
3454 | ||
3455 | default: | |
3456 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
3457 | "(debug info 0x%x)\n", | |
3458 | fsf_req->qtcb->header.fsf_status); | |
3459 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:"); | |
3460 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
3461 | &fsf_req->qtcb->header.fsf_status, | |
3462 | sizeof (u32)); | |
3463 | break; | |
3464 | } | |
3465 | ||
3466 | skip_fsfstatus: | |
3467 | atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &unit->status); | |
3468 | return retval; | |
3469 | } | |
3470 | ||
3471 | /** | |
3472 | * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command) | |
3473 | * @adapter: adapter where scsi command is issued | |
3474 | * @unit: unit where command is sent to | |
3475 | * @scsi_cmnd: scsi command to be sent | |
3476 | * @timer: timer to be started when request is initiated | |
3477 | * @req_flags: flags for fsf_request | |
3478 | */ | |
3479 | int | |
3480 | zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter, | |
3481 | struct zfcp_unit *unit, | |
3482 | struct scsi_cmnd * scsi_cmnd, | |
2abbe866 | 3483 | int use_timer, int req_flags) |
1da177e4 LT |
3484 | { |
3485 | struct zfcp_fsf_req *fsf_req = NULL; | |
3486 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
3487 | unsigned int sbtype; | |
3488 | unsigned long lock_flags; | |
3489 | int real_bytes = 0; | |
3490 | int retval = 0; | |
3491 | int mask; | |
3492 | ||
3493 | /* setup new FSF request */ | |
3494 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, | |
3495 | adapter->pool.fsf_req_scsi, | |
3496 | &lock_flags, &fsf_req); | |
3497 | if (unlikely(retval < 0)) { | |
3498 | ZFCP_LOG_DEBUG("error: Could not create FCP command request " | |
3499 | "for unit 0x%016Lx on port 0x%016Lx on " | |
3500 | "adapter %s\n", | |
3501 | unit->fcp_lun, | |
3502 | unit->port->wwpn, | |
3503 | zfcp_get_busid_by_adapter(adapter)); | |
3504 | goto failed_req_create; | |
3505 | } | |
3506 | ||
059c97d0 AH |
3507 | zfcp_unit_get(unit); |
3508 | fsf_req->unit = unit; | |
1da177e4 | 3509 | |
059c97d0 | 3510 | /* associate FSF request with SCSI request (for look up on abort) */ |
4eff4a36 | 3511 | scsi_cmnd->host_scribble = (unsigned char *) fsf_req->req_id; |
059c97d0 AH |
3512 | |
3513 | /* associate SCSI command with FSF request */ | |
3514 | fsf_req->data = (unsigned long) scsi_cmnd; | |
1da177e4 LT |
3515 | |
3516 | /* set handles of unit and its parent port in QTCB */ | |
3517 | fsf_req->qtcb->header.lun_handle = unit->handle; | |
3518 | fsf_req->qtcb->header.port_handle = unit->port->handle; | |
3519 | ||
3520 | /* FSF does not define the structure of the FCP_CMND IU */ | |
3521 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) | |
3522 | &(fsf_req->qtcb->bottom.io.fcp_cmnd); | |
3523 | ||
3524 | /* | |
3525 | * set depending on data direction: | |
3526 | * data direction bits in SBALE (SB Type) | |
3527 | * data direction bits in QTCB | |
3528 | * data direction bits in FCP_CMND IU | |
3529 | */ | |
3530 | switch (scsi_cmnd->sc_data_direction) { | |
3531 | case DMA_NONE: | |
1da177e4 LT |
3532 | fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; |
3533 | /* | |
3534 | * FIXME(qdio): | |
3535 | * what is the correct type for commands | |
3536 | * without 'real' data buffers? | |
3537 | */ | |
3538 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
3539 | break; | |
3540 | case DMA_FROM_DEVICE: | |
1da177e4 LT |
3541 | fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ; |
3542 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
3543 | fcp_cmnd_iu->rddata = 1; | |
3544 | break; | |
3545 | case DMA_TO_DEVICE: | |
1da177e4 LT |
3546 | fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE; |
3547 | sbtype = SBAL_FLAGS0_TYPE_WRITE; | |
3548 | fcp_cmnd_iu->wddata = 1; | |
3549 | break; | |
3550 | case DMA_BIDIRECTIONAL: | |
1da177e4 LT |
3551 | default: |
3552 | /* | |
3553 | * dummy, catch this condition earlier | |
3554 | * in zfcp_scsi_queuecommand | |
3555 | */ | |
3556 | goto failed_scsi_cmnd; | |
3557 | } | |
3558 | ||
3559 | /* set FC service class in QTCB (3 per default) */ | |
06506d00 | 3560 | fsf_req->qtcb->bottom.io.service_class = ZFCP_FC_SERVICE_CLASS_DEFAULT; |
1da177e4 LT |
3561 | |
3562 | /* set FCP_LUN in FCP_CMND IU in QTCB */ | |
3563 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
3564 | ||
3565 | mask = ZFCP_STATUS_UNIT_READONLY | ZFCP_STATUS_UNIT_SHARED; | |
3566 | ||
3567 | /* set task attributes in FCP_CMND IU in QTCB */ | |
3568 | if (likely((scsi_cmnd->device->simple_tags) || | |
3569 | (atomic_test_mask(mask, &unit->status)))) | |
3570 | fcp_cmnd_iu->task_attribute = SIMPLE_Q; | |
3571 | else | |
3572 | fcp_cmnd_iu->task_attribute = UNTAGGED; | |
3573 | ||
3574 | /* set additional length of FCP_CDB in FCP_CMND IU in QTCB, if needed */ | |
3575 | if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH)) { | |
3576 | fcp_cmnd_iu->add_fcp_cdb_length | |
3577 | = (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2; | |
3578 | ZFCP_LOG_TRACE("SCSI CDB length is 0x%x, " | |
3579 | "additional FCP_CDB length is 0x%x " | |
3580 | "(shifted right 2 bits)\n", | |
3581 | scsi_cmnd->cmd_len, | |
3582 | fcp_cmnd_iu->add_fcp_cdb_length); | |
3583 | } | |
3584 | /* | |
3585 | * copy SCSI CDB (including additional length, if any) to | |
3586 | * FCP_CDB in FCP_CMND IU in QTCB | |
3587 | */ | |
3588 | memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); | |
3589 | ||
3590 | /* FCP CMND IU length in QTCB */ | |
3591 | fsf_req->qtcb->bottom.io.fcp_cmnd_length = | |
3592 | sizeof (struct fcp_cmnd_iu) + | |
3593 | fcp_cmnd_iu->add_fcp_cdb_length + sizeof (fcp_dl_t); | |
3594 | ||
3595 | /* generate SBALEs from data buffer */ | |
3596 | real_bytes = zfcp_qdio_sbals_from_scsicmnd(fsf_req, sbtype, scsi_cmnd); | |
3597 | if (unlikely(real_bytes < 0)) { | |
3598 | if (fsf_req->sbal_number < ZFCP_MAX_SBALS_PER_REQ) { | |
3599 | ZFCP_LOG_DEBUG( | |
3600 | "Data did not fit into available buffer(s), " | |
3601 | "waiting for more...\n"); | |
3602 | retval = -EIO; | |
3603 | } else { | |
3604 | ZFCP_LOG_NORMAL("error: No truncation implemented but " | |
3605 | "required. Shutting down unit " | |
3606 | "(adapter %s, port 0x%016Lx, " | |
3607 | "unit 0x%016Lx)\n", | |
3608 | zfcp_get_busid_by_unit(unit), | |
3609 | unit->port->wwpn, | |
3610 | unit->fcp_lun); | |
3611 | zfcp_erp_unit_shutdown(unit, 0); | |
3612 | retval = -EINVAL; | |
3613 | } | |
3614 | goto no_fit; | |
3615 | } | |
3616 | ||
3617 | /* set length of FCP data length in FCP_CMND IU in QTCB */ | |
3618 | zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes); | |
3619 | ||
3620 | ZFCP_LOG_DEBUG("Sending SCSI command:\n"); | |
3621 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3622 | (char *) scsi_cmnd->cmnd, scsi_cmnd->cmd_len); | |
3623 | ||
2abbe866 AH |
3624 | if (use_timer) |
3625 | zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); | |
3626 | ||
3627 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
3628 | if (unlikely(retval < 0)) { |
3629 | ZFCP_LOG_INFO("error: Could not send FCP command request " | |
3630 | "on adapter %s, port 0x%016Lx, unit 0x%016Lx\n", | |
3631 | zfcp_get_busid_by_adapter(adapter), | |
3632 | unit->port->wwpn, | |
3633 | unit->fcp_lun); | |
3634 | goto send_failed; | |
3635 | } | |
3636 | ||
3637 | ZFCP_LOG_TRACE("Send FCP Command initiated (adapter %s, " | |
3638 | "port 0x%016Lx, unit 0x%016Lx)\n", | |
3639 | zfcp_get_busid_by_adapter(adapter), | |
3640 | unit->port->wwpn, | |
3641 | unit->fcp_lun); | |
3642 | goto success; | |
3643 | ||
3644 | send_failed: | |
3645 | no_fit: | |
3646 | failed_scsi_cmnd: | |
059c97d0 | 3647 | zfcp_unit_put(unit); |
1da177e4 LT |
3648 | zfcp_fsf_req_free(fsf_req); |
3649 | fsf_req = NULL; | |
3650 | scsi_cmnd->host_scribble = NULL; | |
3651 | success: | |
3652 | failed_req_create: | |
3653 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
3654 | return retval; | |
3655 | } | |
3656 | ||
1da177e4 LT |
3657 | struct zfcp_fsf_req * |
3658 | zfcp_fsf_send_fcp_command_task_management(struct zfcp_adapter *adapter, | |
3659 | struct zfcp_unit *unit, | |
3660 | u8 tm_flags, int req_flags) | |
3661 | { | |
3662 | struct zfcp_fsf_req *fsf_req = NULL; | |
3663 | int retval = 0; | |
3664 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
3665 | unsigned long lock_flags; | |
3666 | volatile struct qdio_buffer_element *sbale; | |
3667 | ||
3668 | /* setup new FSF request */ | |
3669 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, | |
3670 | adapter->pool.fsf_req_scsi, | |
3671 | &lock_flags, &fsf_req); | |
3672 | if (retval < 0) { | |
3673 | ZFCP_LOG_INFO("error: Could not create FCP command (task " | |
3674 | "management) request for adapter %s, port " | |
3675 | " 0x%016Lx, unit 0x%016Lx.\n", | |
3676 | zfcp_get_busid_by_adapter(adapter), | |
3677 | unit->port->wwpn, unit->fcp_lun); | |
3678 | goto out; | |
3679 | } | |
3680 | ||
3681 | /* | |
3682 | * Used to decide on proper handler in the return path, | |
3683 | * could be either zfcp_fsf_send_fcp_command_task_handler or | |
3684 | * zfcp_fsf_send_fcp_command_task_management_handler */ | |
3685 | ||
3686 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT; | |
3687 | ||
3688 | /* | |
3689 | * hold a pointer to the unit being target of this | |
3690 | * task management request | |
3691 | */ | |
059c97d0 | 3692 | fsf_req->data = (unsigned long) unit; |
1da177e4 LT |
3693 | |
3694 | /* set FSF related fields in QTCB */ | |
3695 | fsf_req->qtcb->header.lun_handle = unit->handle; | |
3696 | fsf_req->qtcb->header.port_handle = unit->port->handle; | |
3697 | fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
06506d00 | 3698 | fsf_req->qtcb->bottom.io.service_class = ZFCP_FC_SERVICE_CLASS_DEFAULT; |
1da177e4 LT |
3699 | fsf_req->qtcb->bottom.io.fcp_cmnd_length = |
3700 | sizeof (struct fcp_cmnd_iu) + sizeof (fcp_dl_t); | |
3701 | ||
3702 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
3703 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE; | |
3704 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
3705 | ||
3706 | /* set FCP related fields in FCP_CMND IU in QTCB */ | |
3707 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) | |
3708 | &(fsf_req->qtcb->bottom.io.fcp_cmnd); | |
3709 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
3710 | fcp_cmnd_iu->task_management_flags = tm_flags; | |
3711 | ||
2abbe866 AH |
3712 | zfcp_fsf_start_timer(fsf_req, ZFCP_SCSI_ER_TIMEOUT); |
3713 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 | 3714 | if (retval) { |
1da177e4 LT |
3715 | ZFCP_LOG_INFO("error: Could not send an FCP-command (task " |
3716 | "management) on adapter %s, port 0x%016Lx for " | |
3717 | "unit LUN 0x%016Lx\n", | |
3718 | zfcp_get_busid_by_adapter(adapter), | |
3719 | unit->port->wwpn, | |
3720 | unit->fcp_lun); | |
3721 | zfcp_fsf_req_free(fsf_req); | |
3722 | fsf_req = NULL; | |
3723 | goto out; | |
3724 | } | |
3725 | ||
3726 | ZFCP_LOG_TRACE("Send FCP Command (task management function) initiated " | |
3727 | "(adapter %s, port 0x%016Lx, unit 0x%016Lx, " | |
3728 | "tm_flags=0x%x)\n", | |
3729 | zfcp_get_busid_by_adapter(adapter), | |
3730 | unit->port->wwpn, | |
3731 | unit->fcp_lun, | |
3732 | tm_flags); | |
3733 | out: | |
3734 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
3735 | return fsf_req; | |
3736 | } | |
3737 | ||
3738 | /* | |
3739 | * function: zfcp_fsf_send_fcp_command_handler | |
3740 | * | |
3741 | * purpose: is called for finished Send FCP Command | |
3742 | * | |
3743 | * returns: | |
3744 | */ | |
3745 | static int | |
3746 | zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *fsf_req) | |
3747 | { | |
3748 | int retval = -EINVAL; | |
3749 | struct zfcp_unit *unit; | |
3750 | struct fsf_qtcb_header *header; | |
3751 | u16 subtable, rule, counter; | |
3752 | ||
3753 | header = &fsf_req->qtcb->header; | |
3754 | ||
3755 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)) | |
059c97d0 | 3756 | unit = (struct zfcp_unit *) fsf_req->data; |
1da177e4 | 3757 | else |
059c97d0 | 3758 | unit = fsf_req->unit; |
1da177e4 LT |
3759 | |
3760 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
3761 | /* go directly to calls of special handlers */ | |
3762 | goto skip_fsfstatus; | |
3763 | } | |
3764 | ||
3765 | /* evaluate FSF status in QTCB */ | |
3766 | switch (header->fsf_status) { | |
3767 | ||
3768 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
3769 | ZFCP_LOG_INFO("Temporary port identifier 0x%x for port " |
3770 | "0x%016Lx on adapter %s invalid\n", | |
3771 | unit->port->handle, | |
3772 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3773 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3774 | (char *) &header->fsf_status_qual, | |
3775 | sizeof (union fsf_status_qual)); | |
3776 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3777 | "fsf_s_phand_nv"); | |
3778 | zfcp_erp_adapter_reopen(unit->port->adapter, 0); | |
3779 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3780 | break; | |
3781 | ||
3782 | case FSF_LUN_HANDLE_NOT_VALID: | |
1da177e4 LT |
3783 | ZFCP_LOG_INFO("Temporary LUN identifier 0x%x for unit " |
3784 | "0x%016Lx on port 0x%016Lx on adapter %s is " | |
3785 | "invalid. This may happen occasionally.\n", | |
3786 | unit->handle, | |
3787 | unit->fcp_lun, | |
3788 | unit->port->wwpn, | |
3789 | zfcp_get_busid_by_unit(unit)); | |
3790 | ZFCP_LOG_NORMAL("Status qualifier data:\n"); | |
3791 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL, | |
3792 | (char *) &header->fsf_status_qual, | |
3793 | sizeof (union fsf_status_qual)); | |
3794 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3795 | "fsf_s_uhand_nv"); | |
3796 | zfcp_erp_port_reopen(unit->port, 0); | |
3797 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3798 | break; | |
3799 | ||
3800 | case FSF_HANDLE_MISMATCH: | |
1da177e4 LT |
3801 | ZFCP_LOG_NORMAL("bug: The port handle 0x%x has changed " |
3802 | "unexpectedly. (adapter %s, port 0x%016Lx, " | |
3803 | "unit 0x%016Lx)\n", | |
3804 | unit->port->handle, | |
3805 | zfcp_get_busid_by_unit(unit), | |
3806 | unit->port->wwpn, | |
3807 | unit->fcp_lun); | |
3808 | ZFCP_LOG_NORMAL("status qualifier:\n"); | |
3809 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL, | |
3810 | (char *) &header->fsf_status_qual, | |
3811 | sizeof (union fsf_status_qual)); | |
3812 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3813 | "fsf_s_hand_mis"); | |
3814 | zfcp_erp_adapter_reopen(unit->port->adapter, 0); | |
1da177e4 LT |
3815 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3816 | break; | |
3817 | ||
3818 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: | |
06506d00 AH |
3819 | ZFCP_LOG_INFO("error: adapter %s does not support fc " |
3820 | "class %d.\n", | |
3821 | zfcp_get_busid_by_unit(unit), | |
3822 | ZFCP_FC_SERVICE_CLASS_DEFAULT); | |
1da177e4 LT |
3823 | /* stop operation for this adapter */ |
3824 | debug_text_exception(fsf_req->adapter->erp_dbf, 0, | |
3825 | "fsf_s_class_nsup"); | |
3826 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0); | |
1da177e4 LT |
3827 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3828 | break; | |
3829 | ||
3830 | case FSF_FCPLUN_NOT_VALID: | |
1da177e4 LT |
3831 | ZFCP_LOG_NORMAL("bug: unit 0x%016Lx on port 0x%016Lx on " |
3832 | "adapter %s does not have correct unit " | |
3833 | "handle 0x%x\n", | |
3834 | unit->fcp_lun, | |
3835 | unit->port->wwpn, | |
3836 | zfcp_get_busid_by_unit(unit), | |
3837 | unit->handle); | |
3838 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
3839 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3840 | (char *) &header->fsf_status_qual, | |
3841 | sizeof (union fsf_status_qual)); | |
3842 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3843 | "fsf_s_fcp_lun_nv"); | |
3844 | zfcp_erp_port_reopen(unit->port, 0); | |
1da177e4 LT |
3845 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3846 | break; | |
3847 | ||
3848 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
3849 | ZFCP_LOG_NORMAL("Access denied, cannot send FCP command to " |
3850 | "unit 0x%016Lx on port 0x%016Lx on " | |
3851 | "adapter %s\n", unit->fcp_lun, unit->port->wwpn, | |
3852 | zfcp_get_busid_by_unit(unit)); | |
3853 | for (counter = 0; counter < 2; counter++) { | |
3854 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
3855 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
3856 | switch (subtable) { | |
3857 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
3858 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
3859 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
3860 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
3861 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
3862 | zfcp_act_subtable_type[subtable], rule); | |
3863 | break; | |
3864 | } | |
3865 | } | |
3866 | debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_access"); | |
3867 | zfcp_erp_unit_access_denied(unit); | |
3868 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3869 | break; | |
3870 | ||
3871 | case FSF_DIRECTION_INDICATOR_NOT_VALID: | |
1da177e4 LT |
3872 | ZFCP_LOG_INFO("bug: Invalid data direction given for unit " |
3873 | "0x%016Lx on port 0x%016Lx on adapter %s " | |
3874 | "(debug info %d)\n", | |
3875 | unit->fcp_lun, | |
3876 | unit->port->wwpn, | |
3877 | zfcp_get_busid_by_unit(unit), | |
3878 | fsf_req->qtcb->bottom.io.data_direction); | |
3879 | /* stop operation for this adapter */ | |
3880 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
3881 | "fsf_s_dir_ind_nv"); | |
3882 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0); | |
1da177e4 LT |
3883 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3884 | break; | |
3885 | ||
3886 | case FSF_CMND_LENGTH_NOT_VALID: | |
1da177e4 LT |
3887 | ZFCP_LOG_NORMAL |
3888 | ("bug: An invalid control-data-block length field " | |
3889 | "was found in a command for unit 0x%016Lx on port " | |
3890 | "0x%016Lx on adapter %s " "(debug info %d)\n", | |
3891 | unit->fcp_lun, unit->port->wwpn, | |
3892 | zfcp_get_busid_by_unit(unit), | |
3893 | fsf_req->qtcb->bottom.io.fcp_cmnd_length); | |
3894 | /* stop operation for this adapter */ | |
3895 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
3896 | "fsf_s_cmd_len_nv"); | |
3897 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0); | |
1da177e4 LT |
3898 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3899 | break; | |
3900 | ||
3901 | case FSF_PORT_BOXED: | |
1da177e4 LT |
3902 | ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s " |
3903 | "needs to be reopened\n", | |
3904 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3905 | debug_text_event(fsf_req->adapter->erp_dbf, 2, "fsf_s_pboxed"); | |
d736a27b | 3906 | zfcp_erp_port_boxed(unit->port); |
1da177e4 LT |
3907 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
3908 | ZFCP_STATUS_FSFREQ_RETRY; | |
3909 | break; | |
3910 | ||
3911 | case FSF_LUN_BOXED: | |
1da177e4 LT |
3912 | ZFCP_LOG_NORMAL("unit needs to be reopened (adapter %s, " |
3913 | "wwpn=0x%016Lx, fcp_lun=0x%016Lx)\n", | |
3914 | zfcp_get_busid_by_unit(unit), | |
3915 | unit->port->wwpn, unit->fcp_lun); | |
3916 | debug_text_event(fsf_req->adapter->erp_dbf, 1, "fsf_s_lboxed"); | |
d736a27b | 3917 | zfcp_erp_unit_boxed(unit); |
1da177e4 LT |
3918 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
3919 | | ZFCP_STATUS_FSFREQ_RETRY; | |
3920 | break; | |
3921 | ||
3922 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
3923 | switch (header->fsf_status_qual.word[0]) { |
3924 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
3925 | /* re-establish link to port */ |
3926 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3927 | "fsf_sq_ltest"); | |
65a8d4e1 | 3928 | zfcp_test_link(unit->port); |
1da177e4 LT |
3929 | break; |
3930 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
3931 | /* FIXME(hw) need proper specs for proper action */ |
3932 | /* let scsi stack deal with retries and escalation */ | |
3933 | debug_text_event(fsf_req->adapter->erp_dbf, 1, | |
3934 | "fsf_sq_ulp"); | |
1da177e4 LT |
3935 | break; |
3936 | default: | |
1da177e4 | 3937 | ZFCP_LOG_NORMAL |
516a4201 | 3938 | ("Unknown status qualifier 0x%x arrived.\n", |
1da177e4 LT |
3939 | header->fsf_status_qual.word[0]); |
3940 | debug_text_event(fsf_req->adapter->erp_dbf, 0, | |
3941 | "fsf_sq_inval:"); | |
3942 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
3943 | &header->fsf_status_qual.word[0], | |
3944 | sizeof(u32)); | |
3945 | break; | |
3946 | } | |
516a4201 | 3947 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
3948 | break; |
3949 | ||
3950 | case FSF_GOOD: | |
1da177e4 LT |
3951 | break; |
3952 | ||
3953 | case FSF_FCP_RSP_AVAILABLE: | |
1da177e4 LT |
3954 | break; |
3955 | ||
3956 | default: | |
3957 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_s_inval:"); | |
3958 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
3959 | &header->fsf_status, sizeof(u32)); | |
3960 | break; | |
3961 | } | |
3962 | ||
3963 | skip_fsfstatus: | |
3964 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT) { | |
3965 | retval = | |
3966 | zfcp_fsf_send_fcp_command_task_management_handler(fsf_req); | |
3967 | } else { | |
3968 | retval = zfcp_fsf_send_fcp_command_task_handler(fsf_req); | |
059c97d0 AH |
3969 | fsf_req->unit = NULL; |
3970 | zfcp_unit_put(unit); | |
1da177e4 LT |
3971 | } |
3972 | return retval; | |
3973 | } | |
3974 | ||
3975 | /* | |
3976 | * function: zfcp_fsf_send_fcp_command_task_handler | |
3977 | * | |
3978 | * purpose: evaluates FCP_RSP IU | |
3979 | * | |
3980 | * returns: | |
3981 | */ | |
3982 | static int | |
3983 | zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *fsf_req) | |
3984 | { | |
3985 | int retval = 0; | |
3986 | struct scsi_cmnd *scpnt; | |
3987 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) | |
3988 | &(fsf_req->qtcb->bottom.io.fcp_rsp); | |
3989 | struct fcp_cmnd_iu *fcp_cmnd_iu = (struct fcp_cmnd_iu *) | |
3990 | &(fsf_req->qtcb->bottom.io.fcp_cmnd); | |
3991 | u32 sns_len; | |
3992 | char *fcp_rsp_info = zfcp_get_fcp_rsp_info_ptr(fcp_rsp_iu); | |
3993 | unsigned long flags; | |
059c97d0 | 3994 | struct zfcp_unit *unit = fsf_req->unit; |
1da177e4 LT |
3995 | |
3996 | read_lock_irqsave(&fsf_req->adapter->abort_lock, flags); | |
059c97d0 | 3997 | scpnt = (struct scsi_cmnd *) fsf_req->data; |
1da177e4 LT |
3998 | if (unlikely(!scpnt)) { |
3999 | ZFCP_LOG_DEBUG | |
4000 | ("Command with fsf_req %p is not associated to " | |
4001 | "a scsi command anymore. Aborted?\n", fsf_req); | |
4002 | goto out; | |
4003 | } | |
4004 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ABORTED)) { | |
4005 | /* FIXME: (design) mid-layer should handle DID_ABORT like | |
4006 | * DID_SOFT_ERROR by retrying the request for devices | |
4007 | * that allow retries. | |
4008 | */ | |
4009 | ZFCP_LOG_DEBUG("Setting DID_SOFT_ERROR and SUGGEST_RETRY\n"); | |
4010 | set_host_byte(&scpnt->result, DID_SOFT_ERROR); | |
4011 | set_driver_byte(&scpnt->result, SUGGEST_RETRY); | |
4012 | goto skip_fsfstatus; | |
4013 | } | |
4014 | ||
4015 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
4016 | ZFCP_LOG_DEBUG("Setting DID_ERROR\n"); | |
4017 | set_host_byte(&scpnt->result, DID_ERROR); | |
4018 | goto skip_fsfstatus; | |
4019 | } | |
4020 | ||
4021 | /* set message byte of result in SCSI command */ | |
4022 | scpnt->result |= COMMAND_COMPLETE << 8; | |
4023 | ||
4024 | /* | |
4025 | * copy SCSI status code of FCP_STATUS of FCP_RSP IU to status byte | |
4026 | * of result in SCSI command | |
4027 | */ | |
4028 | scpnt->result |= fcp_rsp_iu->scsi_status; | |
4029 | if (unlikely(fcp_rsp_iu->scsi_status)) { | |
4030 | /* DEBUG */ | |
4031 | ZFCP_LOG_DEBUG("status for SCSI Command:\n"); | |
4032 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4033 | scpnt->cmnd, scpnt->cmd_len); | |
4034 | ZFCP_LOG_DEBUG("SCSI status code 0x%x\n", | |
4035 | fcp_rsp_iu->scsi_status); | |
4036 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4037 | (void *) fcp_rsp_iu, sizeof (struct fcp_rsp_iu)); | |
4038 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4039 | zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), | |
4040 | fcp_rsp_iu->fcp_sns_len); | |
4041 | } | |
4042 | ||
4043 | /* check FCP_RSP_INFO */ | |
4044 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) { | |
4045 | ZFCP_LOG_DEBUG("rsp_len is valid\n"); | |
4046 | switch (fcp_rsp_info[3]) { | |
4047 | case RSP_CODE_GOOD: | |
1da177e4 LT |
4048 | /* ok, continue */ |
4049 | ZFCP_LOG_TRACE("no failure or Task Management " | |
4050 | "Function complete\n"); | |
4051 | set_host_byte(&scpnt->result, DID_OK); | |
4052 | break; | |
4053 | case RSP_CODE_LENGTH_MISMATCH: | |
1da177e4 LT |
4054 | /* hardware bug */ |
4055 | ZFCP_LOG_NORMAL("bug: FCP response code indictates " | |
4056 | "that the fibrechannel protocol data " | |
4057 | "length differs from the burst length. " | |
4058 | "The problem occured on unit 0x%016Lx " | |
4059 | "on port 0x%016Lx on adapter %s", | |
4060 | unit->fcp_lun, | |
4061 | unit->port->wwpn, | |
4062 | zfcp_get_busid_by_unit(unit)); | |
4063 | /* dump SCSI CDB as prepared by zfcp */ | |
4064 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4065 | (char *) &fsf_req->qtcb-> | |
4066 | bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE); | |
1da177e4 LT |
4067 | set_host_byte(&scpnt->result, DID_ERROR); |
4068 | goto skip_fsfstatus; | |
4069 | case RSP_CODE_FIELD_INVALID: | |
1da177e4 LT |
4070 | /* driver or hardware bug */ |
4071 | ZFCP_LOG_NORMAL("bug: FCP response code indictates " | |
4072 | "that the fibrechannel protocol data " | |
4073 | "fields were incorrectly set up. " | |
4074 | "The problem occured on the unit " | |
4075 | "0x%016Lx on port 0x%016Lx on " | |
4076 | "adapter %s", | |
4077 | unit->fcp_lun, | |
4078 | unit->port->wwpn, | |
4079 | zfcp_get_busid_by_unit(unit)); | |
4080 | /* dump SCSI CDB as prepared by zfcp */ | |
4081 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4082 | (char *) &fsf_req->qtcb-> | |
4083 | bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE); | |
4084 | set_host_byte(&scpnt->result, DID_ERROR); | |
1da177e4 LT |
4085 | goto skip_fsfstatus; |
4086 | case RSP_CODE_RO_MISMATCH: | |
1da177e4 LT |
4087 | /* hardware bug */ |
4088 | ZFCP_LOG_NORMAL("bug: The FCP response code indicates " | |
4089 | "that conflicting values for the " | |
4090 | "fibrechannel payload offset from the " | |
4091 | "header were found. " | |
4092 | "The problem occured on unit 0x%016Lx " | |
4093 | "on port 0x%016Lx on adapter %s.\n", | |
4094 | unit->fcp_lun, | |
4095 | unit->port->wwpn, | |
4096 | zfcp_get_busid_by_unit(unit)); | |
4097 | /* dump SCSI CDB as prepared by zfcp */ | |
4098 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4099 | (char *) &fsf_req->qtcb-> | |
4100 | bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE); | |
1da177e4 LT |
4101 | set_host_byte(&scpnt->result, DID_ERROR); |
4102 | goto skip_fsfstatus; | |
4103 | default: | |
4104 | ZFCP_LOG_NORMAL("bug: An invalid FCP response " | |
4105 | "code was detected for a command. " | |
4106 | "The problem occured on the unit " | |
4107 | "0x%016Lx on port 0x%016Lx on " | |
4108 | "adapter %s (debug info 0x%x)\n", | |
4109 | unit->fcp_lun, | |
4110 | unit->port->wwpn, | |
4111 | zfcp_get_busid_by_unit(unit), | |
4112 | fcp_rsp_info[3]); | |
4113 | /* dump SCSI CDB as prepared by zfcp */ | |
4114 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4115 | (char *) &fsf_req->qtcb-> | |
4116 | bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE); | |
1da177e4 | 4117 | set_host_byte(&scpnt->result, DID_ERROR); |
6f71d9bc | 4118 | goto skip_fsfstatus; |
1da177e4 LT |
4119 | } |
4120 | } | |
4121 | ||
4122 | /* check for sense data */ | |
4123 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_sns_len_valid)) { | |
4124 | sns_len = FSF_FCP_RSP_SIZE - | |
4125 | sizeof (struct fcp_rsp_iu) + fcp_rsp_iu->fcp_rsp_len; | |
4126 | ZFCP_LOG_TRACE("room for %i bytes sense data in QTCB\n", | |
4127 | sns_len); | |
4128 | sns_len = min(sns_len, (u32) SCSI_SENSE_BUFFERSIZE); | |
4129 | ZFCP_LOG_TRACE("room for %i bytes sense data in SCSI command\n", | |
4130 | SCSI_SENSE_BUFFERSIZE); | |
4131 | sns_len = min(sns_len, fcp_rsp_iu->fcp_sns_len); | |
4132 | ZFCP_LOG_TRACE("scpnt->result =0x%x, command was:\n", | |
4133 | scpnt->result); | |
4134 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, | |
4135 | (void *) &scpnt->cmnd, scpnt->cmd_len); | |
4136 | ||
4137 | ZFCP_LOG_TRACE("%i bytes sense data provided by FCP\n", | |
4138 | fcp_rsp_iu->fcp_sns_len); | |
4139 | memcpy(&scpnt->sense_buffer, | |
4140 | zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len); | |
4141 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, | |
4142 | (void *) &scpnt->sense_buffer, sns_len); | |
4143 | } | |
4144 | ||
4145 | /* check for overrun */ | |
4146 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_over)) { | |
4147 | ZFCP_LOG_INFO("A data overrun was detected for a command. " | |
4148 | "unit 0x%016Lx, port 0x%016Lx, adapter %s. " | |
4149 | "The response data length is " | |
4150 | "%d, the original length was %d.\n", | |
4151 | unit->fcp_lun, | |
4152 | unit->port->wwpn, | |
4153 | zfcp_get_busid_by_unit(unit), | |
4154 | fcp_rsp_iu->fcp_resid, | |
4155 | (int) zfcp_get_fcp_dl(fcp_cmnd_iu)); | |
4156 | } | |
4157 | ||
4158 | /* check for underrun */ | |
4159 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_under)) { | |
4160 | ZFCP_LOG_INFO("A data underrun was detected for a command. " | |
4161 | "unit 0x%016Lx, port 0x%016Lx, adapter %s. " | |
4162 | "The response data length is " | |
4163 | "%d, the original length was %d.\n", | |
4164 | unit->fcp_lun, | |
4165 | unit->port->wwpn, | |
4166 | zfcp_get_busid_by_unit(unit), | |
4167 | fcp_rsp_iu->fcp_resid, | |
4168 | (int) zfcp_get_fcp_dl(fcp_cmnd_iu)); | |
4169 | ||
4170 | scpnt->resid = fcp_rsp_iu->fcp_resid; | |
4171 | if (scpnt->request_bufflen - scpnt->resid < scpnt->underflow) | |
6f71d9bc | 4172 | set_host_byte(&scpnt->result, DID_ERROR); |
1da177e4 LT |
4173 | } |
4174 | ||
4175 | skip_fsfstatus: | |
4176 | ZFCP_LOG_DEBUG("scpnt->result =0x%x\n", scpnt->result); | |
4177 | ||
8a36e453 | 4178 | if (scpnt->result != 0) |
ed829ad6 | 4179 | zfcp_scsi_dbf_event_result("erro", 3, fsf_req->adapter, scpnt, fsf_req); |
8a36e453 | 4180 | else if (scpnt->retries > 0) |
ed829ad6 | 4181 | zfcp_scsi_dbf_event_result("retr", 4, fsf_req->adapter, scpnt, fsf_req); |
8a36e453 | 4182 | else |
ed829ad6 | 4183 | zfcp_scsi_dbf_event_result("norm", 6, fsf_req->adapter, scpnt, fsf_req); |
1da177e4 LT |
4184 | |
4185 | /* cleanup pointer (need this especially for abort) */ | |
4186 | scpnt->host_scribble = NULL; | |
4187 | ||
1da177e4 | 4188 | /* always call back */ |
1da177e4 LT |
4189 | (scpnt->scsi_done) (scpnt); |
4190 | ||
4191 | /* | |
4192 | * We must hold this lock until scsi_done has been called. | |
4193 | * Otherwise we may call scsi_done after abort regarding this | |
4194 | * command has completed. | |
4195 | * Note: scsi_done must not block! | |
4196 | */ | |
4197 | out: | |
4198 | read_unlock_irqrestore(&fsf_req->adapter->abort_lock, flags); | |
4199 | return retval; | |
4200 | } | |
4201 | ||
4202 | /* | |
4203 | * function: zfcp_fsf_send_fcp_command_task_management_handler | |
4204 | * | |
4205 | * purpose: evaluates FCP_RSP IU | |
4206 | * | |
4207 | * returns: | |
4208 | */ | |
4209 | static int | |
4210 | zfcp_fsf_send_fcp_command_task_management_handler(struct zfcp_fsf_req *fsf_req) | |
4211 | { | |
4212 | int retval = 0; | |
4213 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) | |
4214 | &(fsf_req->qtcb->bottom.io.fcp_rsp); | |
4215 | char *fcp_rsp_info = zfcp_get_fcp_rsp_info_ptr(fcp_rsp_iu); | |
059c97d0 | 4216 | struct zfcp_unit *unit = (struct zfcp_unit *) fsf_req->data; |
1da177e4 | 4217 | |
1da177e4 LT |
4218 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { |
4219 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
4220 | goto skip_fsfstatus; | |
4221 | } | |
4222 | ||
4223 | /* check FCP_RSP_INFO */ | |
4224 | switch (fcp_rsp_info[3]) { | |
4225 | case RSP_CODE_GOOD: | |
1da177e4 LT |
4226 | /* ok, continue */ |
4227 | ZFCP_LOG_DEBUG("no failure or Task Management " | |
4228 | "Function complete\n"); | |
4229 | break; | |
4230 | case RSP_CODE_TASKMAN_UNSUPP: | |
1da177e4 LT |
4231 | ZFCP_LOG_NORMAL("bug: A reuested task management function " |
4232 | "is not supported on the target device " | |
4233 | "unit 0x%016Lx, port 0x%016Lx, adapter %s\n ", | |
4234 | unit->fcp_lun, | |
4235 | unit->port->wwpn, | |
4236 | zfcp_get_busid_by_unit(unit)); | |
4237 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP; | |
4238 | break; | |
4239 | case RSP_CODE_TASKMAN_FAILED: | |
1da177e4 LT |
4240 | ZFCP_LOG_NORMAL("bug: A reuested task management function " |
4241 | "failed to complete successfully. " | |
4242 | "unit 0x%016Lx, port 0x%016Lx, adapter %s.\n", | |
4243 | unit->fcp_lun, | |
4244 | unit->port->wwpn, | |
4245 | zfcp_get_busid_by_unit(unit)); | |
4246 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
4247 | break; | |
4248 | default: | |
4249 | ZFCP_LOG_NORMAL("bug: An invalid FCP response " | |
4250 | "code was detected for a command. " | |
4251 | "unit 0x%016Lx, port 0x%016Lx, adapter %s " | |
4252 | "(debug info 0x%x)\n", | |
4253 | unit->fcp_lun, | |
4254 | unit->port->wwpn, | |
4255 | zfcp_get_busid_by_unit(unit), | |
4256 | fcp_rsp_info[3]); | |
4257 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
4258 | } | |
4259 | ||
4260 | skip_fsfstatus: | |
4261 | return retval; | |
4262 | } | |
4263 | ||
4264 | ||
4265 | /* | |
4266 | * function: zfcp_fsf_control_file | |
4267 | * | |
4268 | * purpose: Initiator of the control file upload/download FSF requests | |
4269 | * | |
4270 | * returns: 0 - FSF request is successfuly created and queued | |
4271 | * -EOPNOTSUPP - The FCP adapter does not have Control File support | |
4272 | * -EINVAL - Invalid direction specified | |
4273 | * -ENOMEM - Insufficient memory | |
4274 | * -EPERM - Cannot create FSF request or place it in QDIO queue | |
4275 | */ | |
4276 | int | |
4277 | zfcp_fsf_control_file(struct zfcp_adapter *adapter, | |
4278 | struct zfcp_fsf_req **fsf_req_ptr, | |
4279 | u32 fsf_command, | |
4280 | u32 option, | |
4281 | struct zfcp_sg_list *sg_list) | |
4282 | { | |
4283 | struct zfcp_fsf_req *fsf_req; | |
4284 | struct fsf_qtcb_bottom_support *bottom; | |
4285 | volatile struct qdio_buffer_element *sbale; | |
1da177e4 LT |
4286 | unsigned long lock_flags; |
4287 | int req_flags = 0; | |
4288 | int direction; | |
4289 | int retval = 0; | |
4290 | ||
aef4a983 | 4291 | if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) { |
1da177e4 LT |
4292 | ZFCP_LOG_INFO("cfdc not supported (adapter %s)\n", |
4293 | zfcp_get_busid_by_adapter(adapter)); | |
4294 | retval = -EOPNOTSUPP; | |
4295 | goto out; | |
4296 | } | |
4297 | ||
4298 | switch (fsf_command) { | |
4299 | ||
4300 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
4301 | direction = SBAL_FLAGS0_TYPE_WRITE; | |
4302 | if ((option != FSF_CFDC_OPTION_FULL_ACCESS) && | |
4303 | (option != FSF_CFDC_OPTION_RESTRICTED_ACCESS)) | |
4304 | req_flags = ZFCP_WAIT_FOR_SBAL; | |
4305 | break; | |
4306 | ||
4307 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
4308 | direction = SBAL_FLAGS0_TYPE_READ; | |
4309 | break; | |
4310 | ||
4311 | default: | |
4312 | ZFCP_LOG_INFO("Invalid FSF command code 0x%08x\n", fsf_command); | |
4313 | retval = -EINVAL; | |
4314 | goto out; | |
4315 | } | |
4316 | ||
1da177e4 LT |
4317 | retval = zfcp_fsf_req_create(adapter, fsf_command, req_flags, |
4318 | NULL, &lock_flags, &fsf_req); | |
4319 | if (retval < 0) { | |
4320 | ZFCP_LOG_INFO("error: Could not create FSF request for the " | |
4321 | "adapter %s\n", | |
4322 | zfcp_get_busid_by_adapter(adapter)); | |
4323 | retval = -EPERM; | |
4324 | goto unlock_queue_lock; | |
4325 | } | |
4326 | ||
4327 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
4328 | sbale[0].flags |= direction; | |
4329 | ||
4330 | bottom = &fsf_req->qtcb->bottom.support; | |
4331 | bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE; | |
4332 | bottom->option = option; | |
4333 | ||
4334 | if (sg_list->count > 0) { | |
4335 | int bytes; | |
4336 | ||
4337 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, direction, | |
4338 | sg_list->sg, sg_list->count, | |
4339 | ZFCP_MAX_SBALS_PER_REQ); | |
4340 | if (bytes != ZFCP_CFDC_MAX_CONTROL_FILE_SIZE) { | |
4341 | ZFCP_LOG_INFO( | |
4342 | "error: Could not create sufficient number of " | |
4343 | "SBALS for an FSF request to the adapter %s\n", | |
4344 | zfcp_get_busid_by_adapter(adapter)); | |
4345 | retval = -ENOMEM; | |
4346 | goto free_fsf_req; | |
4347 | } | |
4348 | } else | |
4349 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
4350 | ||
2abbe866 AH |
4351 | zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); |
4352 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
4353 | if (retval < 0) { |
4354 | ZFCP_LOG_INFO("initiation of cfdc up/download failed" | |
4355 | "(adapter %s)\n", | |
4356 | zfcp_get_busid_by_adapter(adapter)); | |
4357 | retval = -EPERM; | |
4358 | goto free_fsf_req; | |
4359 | } | |
4360 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
4361 | ||
4362 | ZFCP_LOG_NORMAL("Control file %s FSF request has been sent to the " | |
4363 | "adapter %s\n", | |
4364 | fsf_command == FSF_QTCB_DOWNLOAD_CONTROL_FILE ? | |
4365 | "download" : "upload", | |
4366 | zfcp_get_busid_by_adapter(adapter)); | |
4367 | ||
4368 | wait_event(fsf_req->completion_wq, | |
4369 | fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
4370 | ||
4371 | *fsf_req_ptr = fsf_req; | |
2abbe866 | 4372 | goto out; |
1da177e4 LT |
4373 | |
4374 | free_fsf_req: | |
4375 | zfcp_fsf_req_free(fsf_req); | |
4376 | unlock_queue_lock: | |
4377 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
1da177e4 LT |
4378 | out: |
4379 | return retval; | |
4380 | } | |
4381 | ||
4382 | ||
4383 | /* | |
4384 | * function: zfcp_fsf_control_file_handler | |
4385 | * | |
4386 | * purpose: Handler of the control file upload/download FSF requests | |
4387 | * | |
4388 | * returns: 0 - FSF request successfuly processed | |
4389 | * -EAGAIN - Operation has to be repeated because of a temporary problem | |
4390 | * -EACCES - There is no permission to execute an operation | |
4391 | * -EPERM - The control file is not in a right format | |
4392 | * -EIO - There is a problem with the FCP adapter | |
4393 | * -EINVAL - Invalid operation | |
4394 | * -EFAULT - User space memory I/O operation fault | |
4395 | */ | |
4396 | static int | |
4397 | zfcp_fsf_control_file_handler(struct zfcp_fsf_req *fsf_req) | |
4398 | { | |
4399 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
4400 | struct fsf_qtcb_header *header = &fsf_req->qtcb->header; | |
4401 | struct fsf_qtcb_bottom_support *bottom = &fsf_req->qtcb->bottom.support; | |
4402 | int retval = 0; | |
4403 | ||
4404 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
4405 | retval = -EINVAL; | |
4406 | goto skip_fsfstatus; | |
4407 | } | |
4408 | ||
4409 | switch (header->fsf_status) { | |
4410 | ||
4411 | case FSF_GOOD: | |
1da177e4 LT |
4412 | ZFCP_LOG_NORMAL( |
4413 | "The FSF request has been successfully completed " | |
4414 | "on the adapter %s\n", | |
4415 | zfcp_get_busid_by_adapter(adapter)); | |
4416 | break; | |
4417 | ||
4418 | case FSF_OPERATION_PARTIALLY_SUCCESSFUL: | |
1da177e4 LT |
4419 | if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE) { |
4420 | switch (header->fsf_status_qual.word[0]) { | |
4421 | ||
6f71d9bc | 4422 | case FSF_SQ_CFDC_HARDENED_ON_SE: |
4423 | ZFCP_LOG_NORMAL( | |
4424 | "CFDC on the adapter %s has being " | |
4425 | "hardened on primary and secondary SE\n", | |
4426 | zfcp_get_busid_by_adapter(adapter)); | |
4427 | break; | |
4428 | ||
1da177e4 LT |
4429 | case FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE: |
4430 | ZFCP_LOG_NORMAL( | |
4431 | "CFDC of the adapter %s could not " | |
4432 | "be saved on the SE\n", | |
4433 | zfcp_get_busid_by_adapter(adapter)); | |
4434 | break; | |
4435 | ||
4436 | case FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE2: | |
4437 | ZFCP_LOG_NORMAL( | |
4438 | "CFDC of the adapter %s could not " | |
4439 | "be copied to the secondary SE\n", | |
4440 | zfcp_get_busid_by_adapter(adapter)); | |
4441 | break; | |
4442 | ||
4443 | default: | |
4444 | ZFCP_LOG_NORMAL( | |
4445 | "CFDC could not be hardened " | |
4446 | "on the adapter %s\n", | |
4447 | zfcp_get_busid_by_adapter(adapter)); | |
4448 | } | |
4449 | } | |
4450 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4451 | retval = -EAGAIN; | |
4452 | break; | |
4453 | ||
4454 | case FSF_AUTHORIZATION_FAILURE: | |
1da177e4 LT |
4455 | ZFCP_LOG_NORMAL( |
4456 | "Adapter %s does not accept privileged commands\n", | |
4457 | zfcp_get_busid_by_adapter(adapter)); | |
4458 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4459 | retval = -EACCES; | |
4460 | break; | |
4461 | ||
4462 | case FSF_CFDC_ERROR_DETECTED: | |
1da177e4 LT |
4463 | ZFCP_LOG_NORMAL( |
4464 | "Error at position %d in the CFDC, " | |
4465 | "CFDC is discarded by the adapter %s\n", | |
4466 | header->fsf_status_qual.word[0], | |
4467 | zfcp_get_busid_by_adapter(adapter)); | |
4468 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4469 | retval = -EPERM; | |
4470 | break; | |
4471 | ||
4472 | case FSF_CONTROL_FILE_UPDATE_ERROR: | |
1da177e4 LT |
4473 | ZFCP_LOG_NORMAL( |
4474 | "Adapter %s cannot harden the control file, " | |
4475 | "file is discarded\n", | |
4476 | zfcp_get_busid_by_adapter(adapter)); | |
4477 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4478 | retval = -EIO; | |
4479 | break; | |
4480 | ||
4481 | case FSF_CONTROL_FILE_TOO_LARGE: | |
1da177e4 LT |
4482 | ZFCP_LOG_NORMAL( |
4483 | "Control file is too large, file is discarded " | |
4484 | "by the adapter %s\n", | |
4485 | zfcp_get_busid_by_adapter(adapter)); | |
4486 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4487 | retval = -EIO; | |
4488 | break; | |
4489 | ||
4490 | case FSF_ACCESS_CONFLICT_DETECTED: | |
1da177e4 LT |
4491 | if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE) |
4492 | ZFCP_LOG_NORMAL( | |
4493 | "CFDC has been discarded by the adapter %s, " | |
4494 | "because activation would impact " | |
4495 | "%d active connection(s)\n", | |
4496 | zfcp_get_busid_by_adapter(adapter), | |
4497 | header->fsf_status_qual.word[0]); | |
4498 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4499 | retval = -EIO; | |
4500 | break; | |
4501 | ||
4502 | case FSF_CONFLICTS_OVERRULED: | |
1da177e4 LT |
4503 | if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE) |
4504 | ZFCP_LOG_NORMAL( | |
4505 | "CFDC has been activated on the adapter %s, " | |
4506 | "but activation has impacted " | |
4507 | "%d active connection(s)\n", | |
4508 | zfcp_get_busid_by_adapter(adapter), | |
4509 | header->fsf_status_qual.word[0]); | |
4510 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4511 | retval = -EIO; | |
4512 | break; | |
4513 | ||
4514 | case FSF_UNKNOWN_OP_SUBTYPE: | |
1da177e4 LT |
4515 | ZFCP_LOG_NORMAL("unknown operation subtype (adapter: %s, " |
4516 | "op_subtype=0x%x)\n", | |
4517 | zfcp_get_busid_by_adapter(adapter), | |
4518 | bottom->operation_subtype); | |
4519 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4520 | retval = -EINVAL; | |
4521 | break; | |
4522 | ||
4523 | case FSF_INVALID_COMMAND_OPTION: | |
1da177e4 LT |
4524 | ZFCP_LOG_NORMAL( |
4525 | "Invalid option 0x%x has been specified " | |
4526 | "in QTCB bottom sent to the adapter %s\n", | |
4527 | bottom->option, | |
4528 | zfcp_get_busid_by_adapter(adapter)); | |
4529 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4530 | retval = -EINVAL; | |
4531 | break; | |
4532 | ||
4533 | default: | |
4534 | ZFCP_LOG_NORMAL( | |
4535 | "bug: An unknown/unexpected FSF status 0x%08x " | |
4536 | "was presented on the adapter %s\n", | |
4537 | header->fsf_status, | |
4538 | zfcp_get_busid_by_adapter(adapter)); | |
4539 | debug_text_event(fsf_req->adapter->erp_dbf, 0, "fsf_sq_inval"); | |
4540 | debug_exception(fsf_req->adapter->erp_dbf, 0, | |
4541 | &header->fsf_status_qual.word[0], sizeof(u32)); | |
4542 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4543 | retval = -EINVAL; | |
4544 | break; | |
4545 | } | |
4546 | ||
4547 | skip_fsfstatus: | |
4548 | return retval; | |
4549 | } | |
4550 | ||
1da177e4 LT |
4551 | static inline int |
4552 | zfcp_fsf_req_sbal_check(unsigned long *flags, | |
4553 | struct zfcp_qdio_queue *queue, int needed) | |
4554 | { | |
4555 | write_lock_irqsave(&queue->queue_lock, *flags); | |
4556 | if (likely(atomic_read(&queue->free_count) >= needed)) | |
4557 | return 1; | |
4558 | write_unlock_irqrestore(&queue->queue_lock, *flags); | |
4559 | return 0; | |
4560 | } | |
4561 | ||
4562 | /* | |
4563 | * set qtcb pointer in fsf_req and initialize QTCB | |
4564 | */ | |
4d284cac | 4565 | static void |
8a36e453 | 4566 | zfcp_fsf_req_qtcb_init(struct zfcp_fsf_req *fsf_req) |
1da177e4 LT |
4567 | { |
4568 | if (likely(fsf_req->qtcb != NULL)) { | |
fea9d6c7 VS |
4569 | fsf_req->qtcb->prefix.req_seq_no = |
4570 | fsf_req->adapter->fsf_req_seq_no; | |
4571 | fsf_req->qtcb->prefix.req_id = fsf_req->req_id; | |
1da177e4 | 4572 | fsf_req->qtcb->prefix.ulp_info = ZFCP_ULP_INFO_VERSION; |
fea9d6c7 VS |
4573 | fsf_req->qtcb->prefix.qtcb_type = |
4574 | fsf_qtcb_type[fsf_req->fsf_command]; | |
1da177e4 | 4575 | fsf_req->qtcb->prefix.qtcb_version = ZFCP_QTCB_VERSION; |
fea9d6c7 | 4576 | fsf_req->qtcb->header.req_handle = fsf_req->req_id; |
8a36e453 | 4577 | fsf_req->qtcb->header.fsf_command = fsf_req->fsf_command; |
1da177e4 LT |
4578 | } |
4579 | } | |
4580 | ||
4581 | /** | |
4582 | * zfcp_fsf_req_sbal_get - try to get one SBAL in the request queue | |
4583 | * @adapter: adapter for which request queue is examined | |
4584 | * @req_flags: flags indicating whether to wait for needed SBAL or not | |
4585 | * @lock_flags: lock_flags if queue_lock is taken | |
4586 | * Return: 0 on success, otherwise -EIO, or -ERESTARTSYS | |
4587 | * Locks: lock adapter->request_queue->queue_lock on success | |
4588 | */ | |
4589 | static int | |
4590 | zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter, int req_flags, | |
4591 | unsigned long *lock_flags) | |
4592 | { | |
4593 | long ret; | |
4594 | struct zfcp_qdio_queue *req_queue = &adapter->request_queue; | |
4595 | ||
4596 | if (unlikely(req_flags & ZFCP_WAIT_FOR_SBAL)) { | |
4597 | ret = wait_event_interruptible_timeout(adapter->request_wq, | |
4598 | zfcp_fsf_req_sbal_check(lock_flags, req_queue, 1), | |
4599 | ZFCP_SBAL_TIMEOUT); | |
4600 | if (ret < 0) | |
4601 | return ret; | |
4602 | if (!ret) | |
4603 | return -EIO; | |
4604 | } else if (!zfcp_fsf_req_sbal_check(lock_flags, req_queue, 1)) | |
4605 | return -EIO; | |
4606 | ||
4607 | return 0; | |
4608 | } | |
4609 | ||
4610 | /* | |
4611 | * function: zfcp_fsf_req_create | |
4612 | * | |
4613 | * purpose: create an FSF request at the specified adapter and | |
4614 | * setup common fields | |
4615 | * | |
4616 | * returns: -ENOMEM if there was insufficient memory for a request | |
4617 | * -EIO if no qdio buffers could be allocate to the request | |
4618 | * -EINVAL/-EPERM on bug conditions in req_dequeue | |
4619 | * 0 in success | |
4620 | * | |
4621 | * note: The created request is returned by reference. | |
4622 | * | |
4623 | * locks: lock of concerned request queue must not be held, | |
4624 | * but is held on completion (write, irqsave) | |
4625 | */ | |
4626 | int | |
4627 | zfcp_fsf_req_create(struct zfcp_adapter *adapter, u32 fsf_cmd, int req_flags, | |
4628 | mempool_t *pool, unsigned long *lock_flags, | |
4629 | struct zfcp_fsf_req **fsf_req_p) | |
4630 | { | |
4631 | volatile struct qdio_buffer_element *sbale; | |
4632 | struct zfcp_fsf_req *fsf_req = NULL; | |
4633 | int ret = 0; | |
4634 | struct zfcp_qdio_queue *req_queue = &adapter->request_queue; | |
4635 | ||
4636 | /* allocate new FSF request */ | |
4637 | fsf_req = zfcp_fsf_req_alloc(pool, req_flags); | |
4638 | if (unlikely(NULL == fsf_req)) { | |
4639 | ZFCP_LOG_DEBUG("error: Could not put an FSF request into" | |
4640 | "the outbound (send) queue.\n"); | |
4641 | ret = -ENOMEM; | |
4642 | goto failed_fsf_req; | |
4643 | } | |
4644 | ||
8a36e453 MS |
4645 | fsf_req->adapter = adapter; |
4646 | fsf_req->fsf_command = fsf_cmd; | |
fea9d6c7 | 4647 | INIT_LIST_HEAD(&fsf_req->list); |
2abbe866 | 4648 | init_timer(&fsf_req->timer); |
1da177e4 LT |
4649 | |
4650 | /* initialize waitqueue which may be used to wait on | |
4651 | this request completion */ | |
4652 | init_waitqueue_head(&fsf_req->completion_wq); | |
4653 | ||
4654 | ret = zfcp_fsf_req_sbal_get(adapter, req_flags, lock_flags); | |
801e0ced | 4655 | if (ret < 0) |
1da177e4 | 4656 | goto failed_sbals; |
801e0ced CS |
4657 | |
4658 | /* this is serialized (we are holding req_queue-lock of adapter) */ | |
4659 | if (adapter->req_no == 0) | |
4660 | adapter->req_no++; | |
4661 | fsf_req->req_id = adapter->req_no++; | |
4662 | ||
4663 | zfcp_fsf_req_qtcb_init(fsf_req); | |
1da177e4 LT |
4664 | |
4665 | /* | |
4666 | * We hold queue_lock here. Check if QDIOUP is set and let request fail | |
4667 | * if it is not set (see also *_open_qdio and *_close_qdio). | |
4668 | */ | |
4669 | ||
4670 | if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)) { | |
4671 | write_unlock_irqrestore(&req_queue->queue_lock, *lock_flags); | |
4672 | ret = -EIO; | |
4673 | goto failed_sbals; | |
4674 | } | |
4675 | ||
8a36e453 MS |
4676 | if (fsf_req->qtcb) { |
4677 | fsf_req->seq_no = adapter->fsf_req_seq_no; | |
4678 | fsf_req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; | |
4679 | } | |
1da177e4 LT |
4680 | fsf_req->sbal_number = 1; |
4681 | fsf_req->sbal_first = req_queue->free_index; | |
4682 | fsf_req->sbal_curr = req_queue->free_index; | |
4683 | fsf_req->sbale_curr = 1; | |
4684 | ||
4685 | if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP)) { | |
4686 | fsf_req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; | |
4687 | } | |
4688 | ||
4689 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
4690 | ||
4691 | /* setup common SBALE fields */ | |
fea9d6c7 | 4692 | sbale[0].addr = (void *) fsf_req->req_id; |
1da177e4 LT |
4693 | sbale[0].flags |= SBAL_FLAGS0_COMMAND; |
4694 | if (likely(fsf_req->qtcb != NULL)) { | |
4695 | sbale[1].addr = (void *) fsf_req->qtcb; | |
4696 | sbale[1].length = sizeof(struct fsf_qtcb); | |
4697 | } | |
4698 | ||
4699 | ZFCP_LOG_TRACE("got %i free BUFFERs starting at index %i\n", | |
4700 | fsf_req->sbal_number, fsf_req->sbal_first); | |
4701 | ||
4702 | goto success; | |
4703 | ||
4704 | failed_sbals: | |
4705 | /* dequeue new FSF request previously enqueued */ | |
4706 | zfcp_fsf_req_free(fsf_req); | |
4707 | fsf_req = NULL; | |
4708 | ||
4709 | failed_fsf_req: | |
4710 | write_lock_irqsave(&req_queue->queue_lock, *lock_flags); | |
4711 | success: | |
4712 | *fsf_req_p = fsf_req; | |
4713 | return ret; | |
4714 | } | |
4715 | ||
4716 | /* | |
4717 | * function: zfcp_fsf_req_send | |
4718 | * | |
4719 | * purpose: start transfer of FSF request via QDIO | |
4720 | * | |
4721 | * returns: 0 - request transfer succesfully started | |
4722 | * !0 - start of request transfer failed | |
4723 | */ | |
2abbe866 | 4724 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *fsf_req) |
1da177e4 LT |
4725 | { |
4726 | struct zfcp_adapter *adapter; | |
4727 | struct zfcp_qdio_queue *req_queue; | |
4728 | volatile struct qdio_buffer_element *sbale; | |
8a36e453 | 4729 | int inc_seq_no; |
1da177e4 | 4730 | int new_distance_from_int; |
fea9d6c7 | 4731 | u64 dbg_tmp[2]; |
1da177e4 LT |
4732 | int retval = 0; |
4733 | ||
4734 | adapter = fsf_req->adapter; | |
4735 | req_queue = &adapter->request_queue, | |
4736 | ||
4737 | ||
4738 | /* FIXME(debug): remove it later */ | |
4739 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_first, 0); | |
4740 | ZFCP_LOG_DEBUG("SBALE0 flags=0x%x\n", sbale[0].flags); | |
4741 | ZFCP_LOG_TRACE("HEX DUMP OF SBALE1 PAYLOAD:\n"); | |
4742 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, (char *) sbale[1].addr, | |
4743 | sbale[1].length); | |
4744 | ||
fea9d6c7 VS |
4745 | /* put allocated FSF request into hash table */ |
4746 | spin_lock(&adapter->req_list_lock); | |
4747 | zfcp_reqlist_add(adapter, fsf_req); | |
4748 | spin_unlock(&adapter->req_list_lock); | |
1da177e4 | 4749 | |
8a36e453 MS |
4750 | inc_seq_no = (fsf_req->qtcb != NULL); |
4751 | ||
1da177e4 LT |
4752 | ZFCP_LOG_TRACE("request queue of adapter %s: " |
4753 | "next free SBAL is %i, %i free SBALs\n", | |
4754 | zfcp_get_busid_by_adapter(adapter), | |
4755 | req_queue->free_index, | |
4756 | atomic_read(&req_queue->free_count)); | |
4757 | ||
4758 | ZFCP_LOG_DEBUG("calling do_QDIO adapter %s, flags=0x%x, queue_no=%i, " | |
4759 | "index_in_queue=%i, count=%i, buffers=%p\n", | |
4760 | zfcp_get_busid_by_adapter(adapter), | |
4761 | QDIO_FLAG_SYNC_OUTPUT, | |
4762 | 0, fsf_req->sbal_first, fsf_req->sbal_number, | |
4763 | &req_queue->buffer[fsf_req->sbal_first]); | |
4764 | ||
4765 | /* | |
4766 | * adjust the number of free SBALs in request queue as well as | |
4767 | * position of first one | |
4768 | */ | |
4769 | atomic_sub(fsf_req->sbal_number, &req_queue->free_count); | |
4770 | ZFCP_LOG_TRACE("free_count=%d\n", atomic_read(&req_queue->free_count)); | |
4771 | req_queue->free_index += fsf_req->sbal_number; /* increase */ | |
4772 | req_queue->free_index %= QDIO_MAX_BUFFERS_PER_Q; /* wrap if needed */ | |
4773 | new_distance_from_int = zfcp_qdio_determine_pci(req_queue, fsf_req); | |
4774 | ||
8a36e453 MS |
4775 | fsf_req->issued = get_clock(); |
4776 | ||
1da177e4 LT |
4777 | retval = do_QDIO(adapter->ccw_device, |
4778 | QDIO_FLAG_SYNC_OUTPUT, | |
4779 | 0, fsf_req->sbal_first, fsf_req->sbal_number, NULL); | |
4780 | ||
fea9d6c7 VS |
4781 | dbg_tmp[0] = (unsigned long) sbale[0].addr; |
4782 | dbg_tmp[1] = (u64) retval; | |
4783 | debug_event(adapter->erp_dbf, 4, (void *) dbg_tmp, 16); | |
4784 | ||
1da177e4 LT |
4785 | if (unlikely(retval)) { |
4786 | /* Queues are down..... */ | |
4787 | retval = -EIO; | |
2abbe866 | 4788 | del_timer(&fsf_req->timer); |
fea9d6c7 | 4789 | spin_lock(&adapter->req_list_lock); |
ca2d02c2 | 4790 | zfcp_reqlist_remove(adapter, fsf_req); |
fea9d6c7 VS |
4791 | spin_unlock(&adapter->req_list_lock); |
4792 | /* undo changes in request queue made for this request */ | |
1da177e4 LT |
4793 | zfcp_qdio_zero_sbals(req_queue->buffer, |
4794 | fsf_req->sbal_first, fsf_req->sbal_number); | |
4795 | atomic_add(fsf_req->sbal_number, &req_queue->free_count); | |
fea9d6c7 | 4796 | req_queue->free_index -= fsf_req->sbal_number; |
1da177e4 LT |
4797 | req_queue->free_index += QDIO_MAX_BUFFERS_PER_Q; |
4798 | req_queue->free_index %= QDIO_MAX_BUFFERS_PER_Q; /* wrap */ | |
fea9d6c7 | 4799 | zfcp_erp_adapter_reopen(adapter, 0); |
1da177e4 LT |
4800 | } else { |
4801 | req_queue->distance_from_int = new_distance_from_int; | |
4802 | /* | |
4803 | * increase FSF sequence counter - | |
4804 | * this must only be done for request successfully enqueued to | |
4805 | * QDIO this rejected requests may be cleaned up by calling | |
4806 | * routines resulting in missing sequence counter values | |
4807 | * otherwise, | |
4808 | */ | |
8a36e453 | 4809 | |
1da177e4 | 4810 | /* Don't increase for unsolicited status */ |
8a36e453 | 4811 | if (inc_seq_no) |
1da177e4 | 4812 | adapter->fsf_req_seq_no++; |
8a36e453 | 4813 | |
1da177e4 | 4814 | /* count FSF requests pending */ |
fea9d6c7 | 4815 | atomic_inc(&adapter->reqs_active); |
1da177e4 LT |
4816 | } |
4817 | return retval; | |
4818 | } | |
4819 | ||
1da177e4 | 4820 | #undef ZFCP_LOG_AREA |