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1da177e4 | 1 | /* |
4a9d2d8b AH |
2 | * This file is part of the zfcp device driver for |
3 | * FCP adapters for IBM System z9 and zSeries. | |
1da177e4 | 4 | * |
4a9d2d8b | 5 | * (C) Copyright IBM Corp. 2002, 2006 |
1da177e4 LT |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2, or (at your option) | |
10 | * any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | */ | |
21 | ||
1da177e4 LT |
22 | #include "zfcp_ext.h" |
23 | ||
24 | static int zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *); | |
25 | static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *); | |
26 | static int zfcp_fsf_open_port_handler(struct zfcp_fsf_req *); | |
27 | static int zfcp_fsf_close_port_handler(struct zfcp_fsf_req *); | |
28 | static int zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *); | |
29 | static int zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *); | |
30 | static int zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *); | |
31 | static int zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *); | |
32 | static int zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *); | |
33 | static int zfcp_fsf_send_fcp_command_task_management_handler( | |
34 | struct zfcp_fsf_req *); | |
35 | static int zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *); | |
36 | static int zfcp_fsf_status_read_handler(struct zfcp_fsf_req *); | |
37 | static int zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *); | |
38 | static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *); | |
39 | static int zfcp_fsf_control_file_handler(struct zfcp_fsf_req *); | |
40 | static inline int zfcp_fsf_req_sbal_check( | |
41 | unsigned long *, struct zfcp_qdio_queue *, int); | |
42 | static inline int zfcp_use_one_sbal( | |
43 | struct scatterlist *, int, struct scatterlist *, int); | |
44 | static struct zfcp_fsf_req *zfcp_fsf_req_alloc(mempool_t *, int); | |
2abbe866 | 45 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *); |
1da177e4 LT |
46 | static int zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *); |
47 | static int zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *); | |
48 | static int zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *); | |
698ec016 | 49 | static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *, u8, |
aef4a983 | 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 | * | |
41fa2ada | 83 | * purpose: Obtains an fsf_req and potentially a qtcb (for all but |
1da177e4 LT |
84 | * unsolicited requests) via helper functions |
85 | * Does some initial fsf request set-up. | |
41fa2ada | 86 | * |
1da177e4 LT |
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 | ||
869b2b44 MP |
159 | /* |
160 | * Never ever call this without shutting down the adapter first. | |
161 | * Otherwise the adapter would continue using and corrupting s390 storage. | |
162 | * Included BUG_ON() call to ensure this is done. | |
163 | * ERP is supposed to be the only user of this function. | |
1da177e4 | 164 | */ |
6fcc4711 | 165 | void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter) |
1da177e4 | 166 | { |
869b2b44 | 167 | struct zfcp_fsf_req *fsf_req, *tmp; |
fea9d6c7 | 168 | unsigned long flags; |
6fcc4711 | 169 | LIST_HEAD(remove_queue); |
869b2b44 | 170 | unsigned int i; |
fea9d6c7 | 171 | |
869b2b44 | 172 | BUG_ON(atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)); |
fea9d6c7 VS |
173 | spin_lock_irqsave(&adapter->req_list_lock, flags); |
174 | atomic_set(&adapter->reqs_active, 0); | |
869b2b44 | 175 | for (i = 0; i < REQUEST_LIST_SIZE; i++) |
6fcc4711 | 176 | list_splice_init(&adapter->req_list[i], &remove_queue); |
fea9d6c7 VS |
177 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); |
178 | ||
869b2b44 MP |
179 | list_for_each_entry_safe(fsf_req, tmp, &remove_queue, list) { |
180 | list_del(&fsf_req->list); | |
181 | fsf_req->status |= ZFCP_STATUS_FSFREQ_DISMISSED; | |
182 | zfcp_fsf_req_complete(fsf_req); | |
6fcc4711 | 183 | } |
1da177e4 LT |
184 | } |
185 | ||
186 | /* | |
187 | * function: zfcp_fsf_req_complete | |
188 | * | |
189 | * purpose: Updates active counts and timers for openfcp-reqs | |
190 | * May cleanup request after req_eval returns | |
191 | * | |
192 | * returns: 0 - success | |
193 | * !0 - failure | |
194 | * | |
41fa2ada | 195 | * context: |
1da177e4 LT |
196 | */ |
197 | int | |
198 | zfcp_fsf_req_complete(struct zfcp_fsf_req *fsf_req) | |
199 | { | |
200 | int retval = 0; | |
201 | int cleanup; | |
1da177e4 LT |
202 | |
203 | if (unlikely(fsf_req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) { | |
204 | ZFCP_LOG_DEBUG("Status read response received\n"); | |
205 | /* | |
206 | * Note: all cleanup handling is done in the callchain of | |
207 | * the function call-chain below. | |
208 | */ | |
209 | zfcp_fsf_status_read_handler(fsf_req); | |
210 | goto out; | |
2abbe866 AH |
211 | } else { |
212 | del_timer(&fsf_req->timer); | |
1da177e4 | 213 | zfcp_fsf_protstatus_eval(fsf_req); |
2abbe866 | 214 | } |
1da177e4 LT |
215 | |
216 | /* | |
41fa2ada SS |
217 | * fsf_req may be deleted due to waking up functions, so |
218 | * cleanup is saved here and used later | |
1da177e4 LT |
219 | */ |
220 | if (likely(fsf_req->status & ZFCP_STATUS_FSFREQ_CLEANUP)) | |
221 | cleanup = 1; | |
222 | else | |
223 | cleanup = 0; | |
224 | ||
225 | fsf_req->status |= ZFCP_STATUS_FSFREQ_COMPLETED; | |
226 | ||
227 | /* cleanup request if requested by initiator */ | |
228 | if (likely(cleanup)) { | |
229 | ZFCP_LOG_TRACE("removing FSF request %p\n", fsf_req); | |
230 | /* | |
231 | * lock must not be held here since it will be | |
232 | * grabed by the called routine, too | |
233 | */ | |
1db2c9c0 | 234 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
235 | } else { |
236 | /* notify initiator waiting for the requests completion */ | |
237 | ZFCP_LOG_TRACE("waking initiator of FSF request %p\n",fsf_req); | |
238 | /* | |
239 | * FIXME: Race! We must not access fsf_req here as it might have been | |
240 | * cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED | |
241 | * flag. It's an improbable case. But, we have the same paranoia for | |
242 | * the cleanup flag already. | |
243 | * Might better be handled using complete()? | |
244 | * (setting the flag and doing wakeup ought to be atomic | |
245 | * with regard to checking the flag as long as waitqueue is | |
246 | * part of the to be released structure) | |
247 | */ | |
248 | wake_up(&fsf_req->completion_wq); | |
249 | } | |
250 | ||
251 | out: | |
252 | return retval; | |
253 | } | |
254 | ||
255 | /* | |
256 | * function: zfcp_fsf_protstatus_eval | |
257 | * | |
258 | * purpose: evaluates the QTCB of the finished FSF request | |
259 | * and initiates appropriate actions | |
260 | * (usually calling FSF command specific handlers) | |
261 | * | |
41fa2ada | 262 | * returns: |
1da177e4 | 263 | * |
41fa2ada | 264 | * context: |
1da177e4 LT |
265 | * |
266 | * locks: | |
267 | */ | |
268 | static int | |
269 | zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *fsf_req) | |
270 | { | |
271 | int retval = 0; | |
272 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
8a36e453 MS |
273 | struct fsf_qtcb *qtcb = fsf_req->qtcb; |
274 | union fsf_prot_status_qual *prot_status_qual = | |
275 | &qtcb->prefix.prot_status_qual; | |
1da177e4 | 276 | |
8a36e453 | 277 | zfcp_hba_dbf_event_fsf_response(fsf_req); |
1da177e4 LT |
278 | |
279 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { | |
280 | ZFCP_LOG_DEBUG("fsf_req 0x%lx has been dismissed\n", | |
281 | (unsigned long) fsf_req); | |
282 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
283 | ZFCP_STATUS_FSFREQ_RETRY; /* only for SCSI cmnds. */ | |
1da177e4 LT |
284 | goto skip_protstatus; |
285 | } | |
286 | ||
1da177e4 | 287 | /* evaluate FSF Protocol Status */ |
8a36e453 | 288 | switch (qtcb->prefix.prot_status) { |
1da177e4 LT |
289 | |
290 | case FSF_PROT_GOOD: | |
1da177e4 | 291 | case FSF_PROT_FSF_STATUS_PRESENTED: |
1da177e4 LT |
292 | break; |
293 | ||
294 | case FSF_PROT_QTCB_VERSION_ERROR: | |
1da177e4 LT |
295 | ZFCP_LOG_NORMAL("error: The adapter %s contains " |
296 | "microcode of version 0x%x, the device driver " | |
297 | "only supports 0x%x. Aborting.\n", | |
298 | zfcp_get_busid_by_adapter(adapter), | |
8a36e453 MS |
299 | prot_status_qual->version_error.fsf_version, |
300 | ZFCP_QTCB_VERSION); | |
9467a9b3 | 301 | zfcp_erp_adapter_shutdown(adapter, 0, 117, (u64)fsf_req); |
1da177e4 LT |
302 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
303 | break; | |
304 | ||
305 | case FSF_PROT_SEQ_NUMB_ERROR: | |
1da177e4 LT |
306 | ZFCP_LOG_NORMAL("bug: Sequence number mismatch between " |
307 | "driver (0x%x) and adapter %s (0x%x). " | |
308 | "Restarting all operations on this adapter.\n", | |
8a36e453 | 309 | qtcb->prefix.req_seq_no, |
1da177e4 | 310 | zfcp_get_busid_by_adapter(adapter), |
8a36e453 | 311 | prot_status_qual->sequence_error.exp_req_seq_no); |
9467a9b3 | 312 | zfcp_erp_adapter_reopen(adapter, 0, 98, (u64)fsf_req); |
1da177e4 LT |
313 | fsf_req->status |= ZFCP_STATUS_FSFREQ_RETRY; |
314 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
315 | break; | |
316 | ||
317 | case FSF_PROT_UNSUPP_QTCB_TYPE: | |
1da177e4 LT |
318 | ZFCP_LOG_NORMAL("error: Packet header type used by the " |
319 | "device driver is incompatible with " | |
320 | "that used on adapter %s. " | |
321 | "Stopping all operations on this adapter.\n", | |
322 | zfcp_get_busid_by_adapter(adapter)); | |
9467a9b3 | 323 | zfcp_erp_adapter_shutdown(adapter, 0, 118, (u64)fsf_req); |
1da177e4 LT |
324 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
325 | break; | |
326 | ||
327 | case FSF_PROT_HOST_CONNECTION_INITIALIZING: | |
1da177e4 LT |
328 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
329 | atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT, | |
330 | &(adapter->status)); | |
1da177e4 LT |
331 | break; |
332 | ||
333 | case FSF_PROT_DUPLICATE_REQUEST_ID: | |
1da177e4 LT |
334 | ZFCP_LOG_NORMAL("bug: The request identifier 0x%Lx " |
335 | "to the adapter %s is ambiguous. " | |
aef4a983 MS |
336 | "Stopping all operations on this adapter.\n", |
337 | *(unsigned long long*) | |
338 | (&qtcb->bottom.support.req_handle), | |
1da177e4 | 339 | zfcp_get_busid_by_adapter(adapter)); |
9467a9b3 | 340 | zfcp_erp_adapter_shutdown(adapter, 0, 78, (u64)fsf_req); |
1da177e4 LT |
341 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
342 | break; | |
343 | ||
344 | case FSF_PROT_LINK_DOWN: | |
698ec016 | 345 | zfcp_fsf_link_down_info_eval(fsf_req, 37, |
aef4a983 | 346 | &prot_status_qual->link_down_info); |
9467a9b3 MP |
347 | /* FIXME: reopening adapter now? better wait for link up */ |
348 | zfcp_erp_adapter_reopen(adapter, 0, 79, (u64)fsf_req); | |
1da177e4 LT |
349 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
350 | break; | |
351 | ||
352 | case FSF_PROT_REEST_QUEUE: | |
8a36e453 | 353 | ZFCP_LOG_NORMAL("The local link to adapter with " |
1da177e4 LT |
354 | "%s was re-plugged. " |
355 | "Re-starting operations on this adapter.\n", | |
356 | zfcp_get_busid_by_adapter(adapter)); | |
357 | /* All ports should be marked as ready to run again */ | |
698ec016 MP |
358 | zfcp_erp_modify_adapter_status(adapter, 28, |
359 | 0, ZFCP_STATUS_COMMON_RUNNING, | |
1da177e4 LT |
360 | ZFCP_SET); |
361 | zfcp_erp_adapter_reopen(adapter, | |
362 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | |
9467a9b3 MP |
363 | | ZFCP_STATUS_COMMON_ERP_FAILED, |
364 | 99, (u64)fsf_req); | |
1da177e4 LT |
365 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
366 | break; | |
367 | ||
368 | case FSF_PROT_ERROR_STATE: | |
1da177e4 LT |
369 | ZFCP_LOG_NORMAL("error: The adapter %s " |
370 | "has entered the error state. " | |
371 | "Restarting all operations on this " | |
372 | "adapter.\n", | |
373 | zfcp_get_busid_by_adapter(adapter)); | |
9467a9b3 | 374 | zfcp_erp_adapter_reopen(adapter, 0, 100, (u64)fsf_req); |
1da177e4 LT |
375 | fsf_req->status |= ZFCP_STATUS_FSFREQ_RETRY; |
376 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
377 | break; | |
378 | ||
379 | default: | |
380 | ZFCP_LOG_NORMAL("bug: Transfer protocol status information " | |
381 | "provided by the adapter %s " | |
382 | "is not compatible with the device driver. " | |
383 | "Stopping all operations on this adapter. " | |
384 | "(debug info 0x%x).\n", | |
385 | zfcp_get_busid_by_adapter(adapter), | |
8a36e453 | 386 | qtcb->prefix.prot_status); |
9467a9b3 | 387 | zfcp_erp_adapter_shutdown(adapter, 0, 119, (u64)fsf_req); |
1da177e4 LT |
388 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
389 | } | |
390 | ||
391 | skip_protstatus: | |
392 | /* | |
393 | * always call specific handlers to give them a chance to do | |
394 | * something meaningful even in error cases | |
395 | */ | |
396 | zfcp_fsf_fsfstatus_eval(fsf_req); | |
397 | return retval; | |
398 | } | |
399 | ||
400 | /* | |
401 | * function: zfcp_fsf_fsfstatus_eval | |
402 | * | |
403 | * purpose: evaluates FSF status of completed FSF request | |
404 | * and acts accordingly | |
405 | * | |
406 | * returns: | |
407 | */ | |
408 | static int | |
409 | zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *fsf_req) | |
410 | { | |
411 | int retval = 0; | |
412 | ||
413 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
414 | goto skip_fsfstatus; | |
415 | } | |
416 | ||
417 | /* evaluate FSF Status */ | |
418 | switch (fsf_req->qtcb->header.fsf_status) { | |
419 | case FSF_UNKNOWN_COMMAND: | |
1da177e4 LT |
420 | ZFCP_LOG_NORMAL("bug: Command issued by the device driver is " |
421 | "not known by the adapter %s " | |
422 | "Stopping all operations on this adapter. " | |
423 | "(debug info 0x%x).\n", | |
424 | zfcp_get_busid_by_adapter(fsf_req->adapter), | |
425 | fsf_req->qtcb->header.fsf_command); | |
9467a9b3 MP |
426 | zfcp_erp_adapter_shutdown(fsf_req->adapter, 0, 120, |
427 | (u64)fsf_req); | |
1da177e4 LT |
428 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
429 | break; | |
430 | ||
431 | case FSF_FCP_RSP_AVAILABLE: | |
1da177e4 LT |
432 | ZFCP_LOG_DEBUG("FCP Sense data will be presented to the " |
433 | "SCSI stack.\n"); | |
1da177e4 LT |
434 | break; |
435 | ||
436 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
437 | zfcp_fsf_fsfstatus_qual_eval(fsf_req); |
438 | break; | |
1da177e4 LT |
439 | } |
440 | ||
441 | skip_fsfstatus: | |
442 | /* | |
443 | * always call specific handlers to give them a chance to do | |
444 | * something meaningful even in error cases | |
445 | */ | |
446 | zfcp_fsf_req_dispatch(fsf_req); | |
447 | ||
448 | return retval; | |
449 | } | |
450 | ||
451 | /* | |
452 | * function: zfcp_fsf_fsfstatus_qual_eval | |
453 | * | |
454 | * purpose: evaluates FSF status-qualifier of completed FSF request | |
455 | * and acts accordingly | |
456 | * | |
457 | * returns: | |
458 | */ | |
459 | static int | |
460 | zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *fsf_req) | |
461 | { | |
462 | int retval = 0; | |
463 | ||
464 | switch (fsf_req->qtcb->header.fsf_status_qual.word[0]) { | |
465 | case FSF_SQ_FCP_RSP_AVAILABLE: | |
1da177e4 LT |
466 | break; |
467 | case FSF_SQ_RETRY_IF_POSSIBLE: | |
1da177e4 | 468 | /* The SCSI-stack may now issue retries or escalate */ |
1da177e4 LT |
469 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
470 | break; | |
471 | case FSF_SQ_COMMAND_ABORTED: | |
1da177e4 | 472 | /* Carry the aborted state on to upper layer */ |
1da177e4 LT |
473 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTED; |
474 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
475 | break; | |
476 | case FSF_SQ_NO_RECOM: | |
ceb3dfba | 477 | ZFCP_LOG_NORMAL("bug: No recommendation could be given for a " |
1da177e4 LT |
478 | "problem on the adapter %s " |
479 | "Stopping all operations on this adapter. ", | |
480 | zfcp_get_busid_by_adapter(fsf_req->adapter)); | |
9467a9b3 MP |
481 | zfcp_erp_adapter_shutdown(fsf_req->adapter, 0, 121, |
482 | (u64)fsf_req); | |
1da177e4 LT |
483 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
484 | break; | |
485 | case FSF_SQ_ULP_PROGRAMMING_ERROR: | |
1da177e4 LT |
486 | ZFCP_LOG_NORMAL("error: not enough SBALs for data transfer " |
487 | "(adapter %s)\n", | |
488 | zfcp_get_busid_by_adapter(fsf_req->adapter)); | |
1da177e4 LT |
489 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
490 | break; | |
491 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
492 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
493 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
494 | /* dealt with in the respective functions */ | |
495 | break; | |
496 | default: | |
497 | ZFCP_LOG_NORMAL("bug: Additional status info could " | |
498 | "not be interpreted properly.\n"); | |
499 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL, | |
500 | (char *) &fsf_req->qtcb->header.fsf_status_qual, | |
501 | sizeof (union fsf_status_qual)); | |
1da177e4 LT |
502 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
503 | break; | |
504 | } | |
505 | ||
506 | return retval; | |
507 | } | |
508 | ||
aef4a983 MS |
509 | /** |
510 | * zfcp_fsf_link_down_info_eval - evaluate link down information block | |
511 | */ | |
512 | static void | |
698ec016 | 513 | zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *fsf_req, u8 id, |
aef4a983 MS |
514 | struct fsf_link_down_info *link_down) |
515 | { | |
698ec016 MP |
516 | struct zfcp_adapter *adapter = fsf_req->adapter; |
517 | ||
ee69ab7a MS |
518 | if (atomic_test_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, |
519 | &adapter->status)) | |
520 | return; | |
521 | ||
522 | atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status); | |
523 | ||
2f8f3ed5 AH |
524 | if (link_down == NULL) |
525 | goto out; | |
ee69ab7a | 526 | |
aef4a983 MS |
527 | switch (link_down->error_code) { |
528 | case FSF_PSQ_LINK_NO_LIGHT: | |
529 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
530 | "(no light detected)\n", | |
531 | zfcp_get_busid_by_adapter(adapter)); | |
532 | break; | |
533 | case FSF_PSQ_LINK_WRAP_PLUG: | |
534 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
535 | "(wrap plug detected)\n", | |
536 | zfcp_get_busid_by_adapter(adapter)); | |
537 | break; | |
538 | case FSF_PSQ_LINK_NO_FCP: | |
539 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
540 | "(adjacent node on link does not support FCP)\n", | |
541 | zfcp_get_busid_by_adapter(adapter)); | |
542 | break; | |
543 | case FSF_PSQ_LINK_FIRMWARE_UPDATE: | |
544 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
545 | "(firmware update in progress)\n", | |
546 | zfcp_get_busid_by_adapter(adapter)); | |
547 | break; | |
548 | case FSF_PSQ_LINK_INVALID_WWPN: | |
549 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
550 | "(duplicate or invalid WWPN detected)\n", | |
551 | zfcp_get_busid_by_adapter(adapter)); | |
552 | break; | |
553 | case FSF_PSQ_LINK_NO_NPIV_SUPPORT: | |
554 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
555 | "(no support for NPIV by Fabric)\n", | |
556 | zfcp_get_busid_by_adapter(adapter)); | |
557 | break; | |
558 | case FSF_PSQ_LINK_NO_FCP_RESOURCES: | |
559 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
560 | "(out of resource in FCP daughtercard)\n", | |
561 | zfcp_get_busid_by_adapter(adapter)); | |
562 | break; | |
563 | case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: | |
564 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
565 | "(out of resource in Fabric)\n", | |
566 | zfcp_get_busid_by_adapter(adapter)); | |
567 | break; | |
568 | case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: | |
569 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
570 | "(unable to Fabric login)\n", | |
571 | zfcp_get_busid_by_adapter(adapter)); | |
572 | break; | |
573 | case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: | |
574 | ZFCP_LOG_NORMAL("WWPN assignment file corrupted on adapter %s\n", | |
575 | zfcp_get_busid_by_adapter(adapter)); | |
576 | break; | |
577 | case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: | |
578 | ZFCP_LOG_NORMAL("Mode table corrupted on adapter %s\n", | |
579 | zfcp_get_busid_by_adapter(adapter)); | |
580 | break; | |
581 | case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: | |
582 | ZFCP_LOG_NORMAL("No WWPN for assignment table on adapter %s\n", | |
583 | zfcp_get_busid_by_adapter(adapter)); | |
584 | break; | |
585 | default: | |
586 | ZFCP_LOG_NORMAL("The local link to adapter %s is down " | |
587 | "(warning: unknown reason code %d)\n", | |
588 | zfcp_get_busid_by_adapter(adapter), | |
589 | link_down->error_code); | |
590 | } | |
591 | ||
592 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) | |
593 | ZFCP_LOG_DEBUG("Debug information to link down: " | |
594 | "primary_status=0x%02x " | |
595 | "ioerr_code=0x%02x " | |
596 | "action_code=0x%02x " | |
597 | "reason_code=0x%02x " | |
598 | "explanation_code=0x%02x " | |
599 | "vendor_specific_code=0x%02x\n", | |
600 | link_down->primary_status, | |
601 | link_down->ioerr_code, | |
602 | link_down->action_code, | |
603 | link_down->reason_code, | |
604 | link_down->explanation_code, | |
605 | link_down->vendor_specific_code); | |
606 | ||
2f8f3ed5 | 607 | out: |
698ec016 | 608 | zfcp_erp_adapter_failed(adapter, id, (u64)fsf_req); |
aef4a983 MS |
609 | } |
610 | ||
1da177e4 LT |
611 | /* |
612 | * function: zfcp_fsf_req_dispatch | |
613 | * | |
614 | * purpose: calls the appropriate command specific handler | |
615 | * | |
41fa2ada | 616 | * returns: |
1da177e4 LT |
617 | */ |
618 | static int | |
619 | zfcp_fsf_req_dispatch(struct zfcp_fsf_req *fsf_req) | |
620 | { | |
621 | struct zfcp_erp_action *erp_action = fsf_req->erp_action; | |
622 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
623 | int retval = 0; | |
624 | ||
1da177e4 LT |
625 | |
626 | switch (fsf_req->fsf_command) { | |
627 | ||
628 | case FSF_QTCB_FCP_CMND: | |
1da177e4 LT |
629 | zfcp_fsf_send_fcp_command_handler(fsf_req); |
630 | break; | |
631 | ||
632 | case FSF_QTCB_ABORT_FCP_CMND: | |
1da177e4 LT |
633 | zfcp_fsf_abort_fcp_command_handler(fsf_req); |
634 | break; | |
635 | ||
636 | case FSF_QTCB_SEND_GENERIC: | |
1da177e4 LT |
637 | zfcp_fsf_send_ct_handler(fsf_req); |
638 | break; | |
639 | ||
640 | case FSF_QTCB_OPEN_PORT_WITH_DID: | |
1da177e4 LT |
641 | zfcp_fsf_open_port_handler(fsf_req); |
642 | break; | |
643 | ||
644 | case FSF_QTCB_OPEN_LUN: | |
1da177e4 LT |
645 | zfcp_fsf_open_unit_handler(fsf_req); |
646 | break; | |
647 | ||
648 | case FSF_QTCB_CLOSE_LUN: | |
1da177e4 LT |
649 | zfcp_fsf_close_unit_handler(fsf_req); |
650 | break; | |
651 | ||
652 | case FSF_QTCB_CLOSE_PORT: | |
1da177e4 LT |
653 | zfcp_fsf_close_port_handler(fsf_req); |
654 | break; | |
655 | ||
656 | case FSF_QTCB_CLOSE_PHYSICAL_PORT: | |
1da177e4 LT |
657 | zfcp_fsf_close_physical_port_handler(fsf_req); |
658 | break; | |
659 | ||
660 | case FSF_QTCB_EXCHANGE_CONFIG_DATA: | |
1da177e4 LT |
661 | zfcp_fsf_exchange_config_data_handler(fsf_req); |
662 | break; | |
663 | ||
664 | case FSF_QTCB_EXCHANGE_PORT_DATA: | |
1da177e4 LT |
665 | zfcp_fsf_exchange_port_data_handler(fsf_req); |
666 | break; | |
667 | ||
668 | case FSF_QTCB_SEND_ELS: | |
1da177e4 LT |
669 | zfcp_fsf_send_els_handler(fsf_req); |
670 | break; | |
671 | ||
672 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
1da177e4 LT |
673 | zfcp_fsf_control_file_handler(fsf_req); |
674 | break; | |
675 | ||
676 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
1da177e4 LT |
677 | zfcp_fsf_control_file_handler(fsf_req); |
678 | break; | |
679 | ||
680 | default: | |
1da177e4 LT |
681 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
682 | ZFCP_LOG_NORMAL("bug: Command issued by the device driver is " | |
683 | "not supported by the adapter %s\n", | |
8a36e453 | 684 | zfcp_get_busid_by_adapter(adapter)); |
1da177e4 LT |
685 | if (fsf_req->fsf_command != fsf_req->qtcb->header.fsf_command) |
686 | ZFCP_LOG_NORMAL | |
687 | ("bug: Command issued by the device driver differs " | |
688 | "from the command returned by the adapter %s " | |
689 | "(debug info 0x%x, 0x%x).\n", | |
8a36e453 | 690 | zfcp_get_busid_by_adapter(adapter), |
1da177e4 LT |
691 | fsf_req->fsf_command, |
692 | fsf_req->qtcb->header.fsf_command); | |
693 | } | |
694 | ||
695 | if (!erp_action) | |
696 | return retval; | |
697 | ||
1da177e4 LT |
698 | zfcp_erp_async_handler(erp_action, 0); |
699 | ||
700 | return retval; | |
701 | } | |
702 | ||
703 | /* | |
704 | * function: zfcp_fsf_status_read | |
705 | * | |
706 | * purpose: initiates a Status Read command at the specified adapter | |
707 | * | |
708 | * returns: | |
709 | */ | |
710 | int | |
711 | zfcp_fsf_status_read(struct zfcp_adapter *adapter, int req_flags) | |
712 | { | |
713 | struct zfcp_fsf_req *fsf_req; | |
714 | struct fsf_status_read_buffer *status_buffer; | |
715 | unsigned long lock_flags; | |
716 | volatile struct qdio_buffer_element *sbale; | |
717 | int retval = 0; | |
718 | ||
719 | /* setup new FSF request */ | |
720 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS, | |
721 | req_flags | ZFCP_REQ_NO_QTCB, | |
722 | adapter->pool.fsf_req_status_read, | |
723 | &lock_flags, &fsf_req); | |
724 | if (retval < 0) { | |
725 | ZFCP_LOG_INFO("error: Could not create unsolicited status " | |
726 | "buffer for adapter %s.\n", | |
727 | zfcp_get_busid_by_adapter(adapter)); | |
728 | goto failed_req_create; | |
729 | } | |
730 | ||
731 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
732 | sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS; | |
733 | sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY; | |
734 | fsf_req->sbale_curr = 2; | |
735 | ||
736 | status_buffer = | |
737 | mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC); | |
738 | if (!status_buffer) { | |
739 | ZFCP_LOG_NORMAL("bug: could not get some buffer\n"); | |
740 | goto failed_buf; | |
741 | } | |
742 | memset(status_buffer, 0, sizeof (struct fsf_status_read_buffer)); | |
059c97d0 | 743 | fsf_req->data = (unsigned long) status_buffer; |
1da177e4 LT |
744 | |
745 | /* insert pointer to respective buffer */ | |
746 | sbale = zfcp_qdio_sbale_curr(fsf_req); | |
747 | sbale->addr = (void *) status_buffer; | |
748 | sbale->length = sizeof(struct fsf_status_read_buffer); | |
749 | ||
2abbe866 | 750 | retval = zfcp_fsf_req_send(fsf_req); |
1da177e4 LT |
751 | if (retval) { |
752 | ZFCP_LOG_DEBUG("error: Could not set-up unsolicited status " | |
753 | "environment.\n"); | |
754 | goto failed_req_send; | |
755 | } | |
756 | ||
757 | ZFCP_LOG_TRACE("Status Read request initiated (adapter%s)\n", | |
758 | zfcp_get_busid_by_adapter(adapter)); | |
759 | goto out; | |
760 | ||
761 | failed_req_send: | |
762 | mempool_free(status_buffer, adapter->pool.data_status_read); | |
763 | ||
764 | failed_buf: | |
765 | zfcp_fsf_req_free(fsf_req); | |
766 | failed_req_create: | |
8a36e453 | 767 | zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL); |
1da177e4 LT |
768 | out: |
769 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
770 | return retval; | |
771 | } | |
772 | ||
773 | static int | |
774 | zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *fsf_req) | |
775 | { | |
776 | struct fsf_status_read_buffer *status_buffer; | |
777 | struct zfcp_adapter *adapter; | |
778 | struct zfcp_port *port; | |
779 | unsigned long flags; | |
780 | ||
059c97d0 | 781 | status_buffer = (struct fsf_status_read_buffer *) fsf_req->data; |
1da177e4 LT |
782 | adapter = fsf_req->adapter; |
783 | ||
784 | read_lock_irqsave(&zfcp_data.config_lock, flags); | |
785 | list_for_each_entry(port, &adapter->port_list_head, list) | |
786 | if (port->d_id == (status_buffer->d_id & ZFCP_DID_MASK)) | |
787 | break; | |
788 | read_unlock_irqrestore(&zfcp_data.config_lock, flags); | |
789 | ||
790 | if (!port || (port->d_id != (status_buffer->d_id & ZFCP_DID_MASK))) { | |
ceb3dfba | 791 | ZFCP_LOG_NORMAL("bug: Reopen port indication received for " |
1d589edf | 792 | "nonexisting port with d_id 0x%06x on " |
1da177e4 LT |
793 | "adapter %s. Ignored.\n", |
794 | status_buffer->d_id & ZFCP_DID_MASK, | |
795 | zfcp_get_busid_by_adapter(adapter)); | |
796 | goto out; | |
797 | } | |
798 | ||
799 | switch (status_buffer->status_subtype) { | |
800 | ||
801 | case FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT: | |
9467a9b3 | 802 | zfcp_erp_port_reopen(port, 0, 101, (u64)fsf_req); |
1da177e4 LT |
803 | break; |
804 | ||
805 | case FSF_STATUS_READ_SUB_ERROR_PORT: | |
9467a9b3 | 806 | zfcp_erp_port_shutdown(port, 0, 122, (u64)fsf_req); |
1da177e4 LT |
807 | break; |
808 | ||
809 | default: | |
1da177e4 LT |
810 | ZFCP_LOG_NORMAL("bug: Undefined status subtype received " |
811 | "for a reopen indication on port with " | |
1d589edf | 812 | "d_id 0x%06x on the adapter %s. " |
1da177e4 LT |
813 | "Ignored. (debug info 0x%x)\n", |
814 | status_buffer->d_id, | |
815 | zfcp_get_busid_by_adapter(adapter), | |
816 | status_buffer->status_subtype); | |
817 | } | |
818 | out: | |
819 | return 0; | |
820 | } | |
821 | ||
822 | /* | |
823 | * function: zfcp_fsf_status_read_handler | |
824 | * | |
825 | * purpose: is called for finished Open Port command | |
826 | * | |
41fa2ada | 827 | * returns: |
1da177e4 LT |
828 | */ |
829 | static int | |
830 | zfcp_fsf_status_read_handler(struct zfcp_fsf_req *fsf_req) | |
831 | { | |
832 | int retval = 0; | |
833 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
834 | struct fsf_status_read_buffer *status_buffer = | |
059c97d0 | 835 | (struct fsf_status_read_buffer *) fsf_req->data; |
b7a52fa7 | 836 | struct fsf_bit_error_payload *fsf_bit_error; |
1da177e4 LT |
837 | |
838 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { | |
8a36e453 | 839 | zfcp_hba_dbf_event_fsf_unsol("dism", adapter, status_buffer); |
1da177e4 | 840 | mempool_free(status_buffer, adapter->pool.data_status_read); |
1db2c9c0 | 841 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
842 | goto out; |
843 | } | |
844 | ||
8a36e453 MS |
845 | zfcp_hba_dbf_event_fsf_unsol("read", adapter, status_buffer); |
846 | ||
1da177e4 LT |
847 | switch (status_buffer->status_type) { |
848 | ||
849 | case FSF_STATUS_READ_PORT_CLOSED: | |
1da177e4 LT |
850 | zfcp_fsf_status_read_port_closed(fsf_req); |
851 | break; | |
852 | ||
853 | case FSF_STATUS_READ_INCOMING_ELS: | |
1da177e4 LT |
854 | zfcp_fsf_incoming_els(fsf_req); |
855 | break; | |
856 | ||
857 | case FSF_STATUS_READ_SENSE_DATA_AVAIL: | |
1da177e4 LT |
858 | ZFCP_LOG_INFO("unsolicited sense data received (adapter %s)\n", |
859 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 LT |
860 | break; |
861 | ||
862 | case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: | |
b7a52fa7 RW |
863 | fsf_bit_error = (struct fsf_bit_error_payload *) |
864 | status_buffer->payload; | |
865 | ZFCP_LOG_NORMAL("Warning: bit error threshold data " | |
866 | "received (adapter %s, " | |
867 | "link failures = %i, loss of sync errors = %i, " | |
868 | "loss of signal errors = %i, " | |
869 | "primitive sequence errors = %i, " | |
870 | "invalid transmission word errors = %i, " | |
871 | "CRC errors = %i)\n", | |
872 | zfcp_get_busid_by_adapter(adapter), | |
873 | fsf_bit_error->link_failure_error_count, | |
874 | fsf_bit_error->loss_of_sync_error_count, | |
875 | fsf_bit_error->loss_of_signal_error_count, | |
876 | fsf_bit_error->primitive_sequence_error_count, | |
877 | fsf_bit_error->invalid_transmission_word_error_count, | |
878 | fsf_bit_error->crc_error_count); | |
879 | ZFCP_LOG_INFO("Additional bit error threshold data " | |
880 | "(adapter %s, " | |
881 | "primitive sequence event time-outs = %i, " | |
882 | "elastic buffer overrun errors = %i, " | |
883 | "advertised receive buffer-to-buffer credit = %i, " | |
884 | "current receice buffer-to-buffer credit = %i, " | |
885 | "advertised transmit buffer-to-buffer credit = %i, " | |
886 | "current transmit buffer-to-buffer credit = %i)\n", | |
887 | zfcp_get_busid_by_adapter(adapter), | |
888 | fsf_bit_error->primitive_sequence_event_timeout_count, | |
889 | fsf_bit_error->elastic_buffer_overrun_error_count, | |
890 | fsf_bit_error->advertised_receive_b2b_credit, | |
891 | fsf_bit_error->current_receive_b2b_credit, | |
892 | fsf_bit_error->advertised_transmit_b2b_credit, | |
893 | fsf_bit_error->current_transmit_b2b_credit); | |
1da177e4 LT |
894 | break; |
895 | ||
896 | case FSF_STATUS_READ_LINK_DOWN: | |
aef4a983 MS |
897 | switch (status_buffer->status_subtype) { |
898 | case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: | |
899 | ZFCP_LOG_INFO("Physical link to adapter %s is down\n", | |
900 | zfcp_get_busid_by_adapter(adapter)); | |
698ec016 | 901 | zfcp_fsf_link_down_info_eval(fsf_req, 38, |
ee69ab7a MS |
902 | (struct fsf_link_down_info *) |
903 | &status_buffer->payload); | |
aef4a983 MS |
904 | break; |
905 | case FSF_STATUS_READ_SUB_FDISC_FAILED: | |
906 | ZFCP_LOG_INFO("Local link to adapter %s is down " | |
907 | "due to failed FDISC login\n", | |
ee69ab7a | 908 | zfcp_get_busid_by_adapter(adapter)); |
698ec016 | 909 | zfcp_fsf_link_down_info_eval(fsf_req, 39, |
ee69ab7a MS |
910 | (struct fsf_link_down_info *) |
911 | &status_buffer->payload); | |
aef4a983 MS |
912 | break; |
913 | case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE: | |
914 | ZFCP_LOG_INFO("Local link to adapter %s is down " | |
915 | "due to firmware update on adapter\n", | |
916 | zfcp_get_busid_by_adapter(adapter)); | |
698ec016 | 917 | zfcp_fsf_link_down_info_eval(fsf_req, 40, NULL); |
aef4a983 MS |
918 | break; |
919 | default: | |
920 | ZFCP_LOG_INFO("Local link to adapter %s is down " | |
921 | "due to unknown reason\n", | |
922 | zfcp_get_busid_by_adapter(adapter)); | |
698ec016 | 923 | zfcp_fsf_link_down_info_eval(fsf_req, 41, NULL); |
aef4a983 | 924 | }; |
1da177e4 LT |
925 | break; |
926 | ||
927 | case FSF_STATUS_READ_LINK_UP: | |
aef4a983 | 928 | ZFCP_LOG_NORMAL("Local link to adapter %s was replugged. " |
ee69ab7a MS |
929 | "Restarting operations on this adapter\n", |
930 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 | 931 | /* All ports should be marked as ready to run again */ |
698ec016 | 932 | zfcp_erp_modify_adapter_status(adapter, 30, 0, |
1da177e4 LT |
933 | ZFCP_STATUS_COMMON_RUNNING, |
934 | ZFCP_SET); | |
935 | zfcp_erp_adapter_reopen(adapter, | |
936 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | |
9467a9b3 MP |
937 | | ZFCP_STATUS_COMMON_ERP_FAILED, |
938 | 102, (u64)fsf_req); | |
1da177e4 LT |
939 | break; |
940 | ||
9eb69aff MS |
941 | case FSF_STATUS_READ_NOTIFICATION_LOST: |
942 | ZFCP_LOG_NORMAL("Unsolicited status notification(s) lost: " | |
943 | "adapter %s%s%s%s%s%s%s%s%s\n", | |
944 | zfcp_get_busid_by_adapter(adapter), | |
945 | (status_buffer->status_subtype & | |
946 | FSF_STATUS_READ_SUB_INCOMING_ELS) ? | |
947 | ", incoming ELS" : "", | |
948 | (status_buffer->status_subtype & | |
949 | FSF_STATUS_READ_SUB_SENSE_DATA) ? | |
950 | ", sense data" : "", | |
951 | (status_buffer->status_subtype & | |
952 | FSF_STATUS_READ_SUB_LINK_STATUS) ? | |
953 | ", link status change" : "", | |
954 | (status_buffer->status_subtype & | |
955 | FSF_STATUS_READ_SUB_PORT_CLOSED) ? | |
956 | ", port close" : "", | |
957 | (status_buffer->status_subtype & | |
958 | FSF_STATUS_READ_SUB_BIT_ERROR_THRESHOLD) ? | |
959 | ", bit error exception" : "", | |
960 | (status_buffer->status_subtype & | |
961 | FSF_STATUS_READ_SUB_ACT_UPDATED) ? | |
962 | ", ACT update" : "", | |
963 | (status_buffer->status_subtype & | |
964 | FSF_STATUS_READ_SUB_ACT_HARDENED) ? | |
965 | ", ACT hardening" : "", | |
966 | (status_buffer->status_subtype & | |
967 | FSF_STATUS_READ_SUB_FEATURE_UPDATE_ALERT) ? | |
968 | ", adapter feature change" : ""); | |
969 | ||
970 | if (status_buffer->status_subtype & | |
971 | FSF_STATUS_READ_SUB_ACT_UPDATED) | |
9467a9b3 MP |
972 | zfcp_erp_adapter_access_changed(adapter, 135, |
973 | (u64)fsf_req); | |
9eb69aff MS |
974 | break; |
975 | ||
1da177e4 | 976 | case FSF_STATUS_READ_CFDC_UPDATED: |
8a36e453 | 977 | ZFCP_LOG_NORMAL("CFDC has been updated on the adapter %s\n", |
1da177e4 | 978 | zfcp_get_busid_by_adapter(adapter)); |
9467a9b3 | 979 | zfcp_erp_adapter_access_changed(adapter, 136, (u64)fsf_req); |
1da177e4 LT |
980 | break; |
981 | ||
982 | case FSF_STATUS_READ_CFDC_HARDENED: | |
1da177e4 LT |
983 | switch (status_buffer->status_subtype) { |
984 | case FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE: | |
8a36e453 | 985 | ZFCP_LOG_NORMAL("CFDC of adapter %s saved on SE\n", |
1da177e4 LT |
986 | zfcp_get_busid_by_adapter(adapter)); |
987 | break; | |
988 | case FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE2: | |
8a36e453 | 989 | ZFCP_LOG_NORMAL("CFDC of adapter %s has been copied " |
1da177e4 LT |
990 | "to the secondary SE\n", |
991 | zfcp_get_busid_by_adapter(adapter)); | |
992 | break; | |
993 | default: | |
8a36e453 | 994 | ZFCP_LOG_NORMAL("CFDC of adapter %s has been hardened\n", |
1da177e4 LT |
995 | zfcp_get_busid_by_adapter(adapter)); |
996 | } | |
997 | break; | |
998 | ||
aef4a983 | 999 | case FSF_STATUS_READ_FEATURE_UPDATE_ALERT: |
aef4a983 MS |
1000 | ZFCP_LOG_INFO("List of supported features on adapter %s has " |
1001 | "been changed from 0x%08X to 0x%08X\n", | |
1002 | zfcp_get_busid_by_adapter(adapter), | |
1003 | *(u32*) (status_buffer->payload + 4), | |
1004 | *(u32*) (status_buffer->payload)); | |
1005 | adapter->adapter_features = *(u32*) status_buffer->payload; | |
1006 | break; | |
1007 | ||
1da177e4 | 1008 | default: |
8a36e453 | 1009 | ZFCP_LOG_NORMAL("warning: An unsolicited status packet of unknown " |
1da177e4 LT |
1010 | "type was received (debug info 0x%x)\n", |
1011 | status_buffer->status_type); | |
1012 | ZFCP_LOG_DEBUG("Dump of status_read_buffer %p:\n", | |
1013 | status_buffer); | |
1014 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
1015 | (char *) status_buffer, | |
1016 | sizeof (struct fsf_status_read_buffer)); | |
1017 | break; | |
1018 | } | |
1019 | mempool_free(status_buffer, adapter->pool.data_status_read); | |
1db2c9c0 | 1020 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
1021 | /* |
1022 | * recycle buffer and start new request repeat until outbound | |
1023 | * queue is empty or adapter shutdown is requested | |
1024 | */ | |
1025 | /* | |
1026 | * FIXME(qdio): | |
1027 | * we may wait in the req_create for 5s during shutdown, so | |
1028 | * qdio_cleanup will have to wait at least that long before returning | |
1029 | * with failure to allow us a proper cleanup under all circumstances | |
1030 | */ | |
1031 | /* | |
1032 | * FIXME: | |
1033 | * allocation failure possible? (Is this code needed?) | |
1034 | */ | |
1035 | retval = zfcp_fsf_status_read(adapter, 0); | |
1036 | if (retval < 0) { | |
1037 | ZFCP_LOG_INFO("Failed to create unsolicited status read " | |
1038 | "request for the adapter %s.\n", | |
1039 | zfcp_get_busid_by_adapter(adapter)); | |
1040 | /* temporary fix to avoid status read buffer shortage */ | |
1041 | adapter->status_read_failed++; | |
1042 | if ((ZFCP_STATUS_READS_RECOM - adapter->status_read_failed) | |
1043 | < ZFCP_STATUS_READ_FAILED_THRESHOLD) { | |
1044 | ZFCP_LOG_INFO("restart adapter %s due to status read " | |
1045 | "buffer shortage\n", | |
1046 | zfcp_get_busid_by_adapter(adapter)); | |
9467a9b3 | 1047 | zfcp_erp_adapter_reopen(adapter, 0, 103, (u64)fsf_req); |
1da177e4 LT |
1048 | } |
1049 | } | |
1050 | out: | |
1051 | return retval; | |
1052 | } | |
1053 | ||
1054 | /* | |
1055 | * function: zfcp_fsf_abort_fcp_command | |
1056 | * | |
1057 | * purpose: tells FSF to abort a running SCSI command | |
1058 | * | |
1059 | * returns: address of initiated FSF request | |
1060 | * NULL - request could not be initiated | |
1061 | * | |
41fa2ada | 1062 | * FIXME(design): should be watched by a timeout !!! |
1da177e4 LT |
1063 | * FIXME(design) shouldn't this be modified to return an int |
1064 | * also...don't know how though | |
1065 | */ | |
1066 | struct zfcp_fsf_req * | |
1067 | zfcp_fsf_abort_fcp_command(unsigned long old_req_id, | |
1068 | struct zfcp_adapter *adapter, | |
1069 | struct zfcp_unit *unit, int req_flags) | |
1070 | { | |
1071 | volatile struct qdio_buffer_element *sbale; | |
1da177e4 | 1072 | struct zfcp_fsf_req *fsf_req = NULL; |
2abbe866 | 1073 | unsigned long lock_flags; |
1da177e4 LT |
1074 | int retval = 0; |
1075 | ||
1076 | /* setup new FSF request */ | |
1077 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND, | |
1078 | req_flags, adapter->pool.fsf_req_abort, | |
1079 | &lock_flags, &fsf_req); | |
1080 | if (retval < 0) { | |
1081 | ZFCP_LOG_INFO("error: Failed to create an abort command " | |
1082 | "request for lun 0x%016Lx on port 0x%016Lx " | |
1083 | "on adapter %s.\n", | |
1084 | unit->fcp_lun, | |
1085 | unit->port->wwpn, | |
1086 | zfcp_get_busid_by_adapter(adapter)); | |
1087 | goto out; | |
1088 | } | |
1089 | ||
951f746f CS |
1090 | if (unlikely(!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED, |
1091 | &unit->status))) | |
1092 | goto unit_blocked; | |
1093 | ||
1da177e4 LT |
1094 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1095 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1096 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1097 | ||
059c97d0 | 1098 | fsf_req->data = (unsigned long) unit; |
1da177e4 LT |
1099 | |
1100 | /* set handles of unit and its parent port in QTCB */ | |
1101 | fsf_req->qtcb->header.lun_handle = unit->handle; | |
1102 | fsf_req->qtcb->header.port_handle = unit->port->handle; | |
1103 | ||
1104 | /* set handle of request which should be aborted */ | |
1105 | fsf_req->qtcb->bottom.support.req_handle = (u64) old_req_id; | |
1106 | ||
2abbe866 AH |
1107 | zfcp_fsf_start_timer(fsf_req, ZFCP_SCSI_ER_TIMEOUT); |
1108 | retval = zfcp_fsf_req_send(fsf_req); | |
951f746f CS |
1109 | if (!retval) |
1110 | goto out; | |
1111 | ||
1112 | unit_blocked: | |
1da177e4 LT |
1113 | zfcp_fsf_req_free(fsf_req); |
1114 | fsf_req = NULL; | |
1da177e4 | 1115 | |
1da177e4 LT |
1116 | out: |
1117 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
1118 | return fsf_req; | |
1119 | } | |
1120 | ||
1121 | /* | |
1122 | * function: zfcp_fsf_abort_fcp_command_handler | |
1123 | * | |
1124 | * purpose: is called for finished Abort FCP Command request | |
1125 | * | |
41fa2ada | 1126 | * returns: |
1da177e4 LT |
1127 | */ |
1128 | static int | |
1129 | zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *new_fsf_req) | |
1130 | { | |
1131 | int retval = -EINVAL; | |
059c97d0 | 1132 | struct zfcp_unit *unit; |
8627533c CS |
1133 | union fsf_status_qual *fsf_stat_qual = |
1134 | &new_fsf_req->qtcb->header.fsf_status_qual; | |
1da177e4 | 1135 | |
1da177e4 LT |
1136 | if (new_fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { |
1137 | /* do not set ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED */ | |
1138 | goto skip_fsfstatus; | |
1139 | } | |
1140 | ||
059c97d0 AH |
1141 | unit = (struct zfcp_unit *) new_fsf_req->data; |
1142 | ||
1da177e4 LT |
1143 | /* evaluate FSF status in QTCB */ |
1144 | switch (new_fsf_req->qtcb->header.fsf_status) { | |
1145 | ||
1146 | case FSF_PORT_HANDLE_NOT_VALID: | |
8627533c | 1147 | if (fsf_stat_qual->word[0] != fsf_stat_qual->word[1]) { |
1da177e4 LT |
1148 | /* |
1149 | * In this case a command that was sent prior to a port | |
1150 | * reopen was aborted (handles are different). This is | |
1151 | * fine. | |
1152 | */ | |
1153 | } else { | |
1da177e4 LT |
1154 | ZFCP_LOG_INFO("Temporary port identifier 0x%x for " |
1155 | "port 0x%016Lx on adapter %s invalid. " | |
1156 | "This may happen occasionally.\n", | |
1157 | unit->port->handle, | |
1158 | unit->port->wwpn, | |
1159 | zfcp_get_busid_by_unit(unit)); | |
1160 | ZFCP_LOG_INFO("status qualifier:\n"); | |
1161 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO, | |
1162 | (char *) &new_fsf_req->qtcb->header. | |
1163 | fsf_status_qual, | |
1164 | sizeof (union fsf_status_qual)); | |
1165 | /* Let's hope this sorts out the mess */ | |
9467a9b3 MP |
1166 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 104, |
1167 | (u64)new_fsf_req); | |
1da177e4 LT |
1168 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1169 | } | |
1170 | break; | |
1171 | ||
1172 | case FSF_LUN_HANDLE_NOT_VALID: | |
8627533c | 1173 | if (fsf_stat_qual->word[0] != fsf_stat_qual->word[1]) { |
1da177e4 LT |
1174 | /* |
1175 | * In this case a command that was sent prior to a unit | |
1176 | * reopen was aborted (handles are different). | |
1177 | * This is fine. | |
1178 | */ | |
1179 | } else { | |
1da177e4 LT |
1180 | ZFCP_LOG_INFO |
1181 | ("Warning: Temporary LUN identifier 0x%x of LUN " | |
1182 | "0x%016Lx on port 0x%016Lx on adapter %s is " | |
1183 | "invalid. This may happen in rare cases. " | |
1184 | "Trying to re-establish link.\n", | |
1185 | unit->handle, | |
1186 | unit->fcp_lun, | |
1187 | unit->port->wwpn, | |
1188 | zfcp_get_busid_by_unit(unit)); | |
1189 | ZFCP_LOG_DEBUG("Status qualifier data:\n"); | |
1190 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
1191 | (char *) &new_fsf_req->qtcb->header. | |
1192 | fsf_status_qual, | |
1193 | sizeof (union fsf_status_qual)); | |
1194 | /* Let's hope this sorts out the mess */ | |
9467a9b3 MP |
1195 | zfcp_erp_port_reopen(unit->port, 0, 105, |
1196 | (u64)new_fsf_req); | |
1da177e4 LT |
1197 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1198 | } | |
1199 | break; | |
1200 | ||
1201 | case FSF_FCP_COMMAND_DOES_NOT_EXIST: | |
1da177e4 | 1202 | retval = 0; |
1da177e4 LT |
1203 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED; |
1204 | break; | |
1205 | ||
1206 | case FSF_PORT_BOXED: | |
1da177e4 LT |
1207 | ZFCP_LOG_INFO("Remote port 0x%016Lx on adapter %s needs to " |
1208 | "be reopened\n", unit->port->wwpn, | |
1209 | zfcp_get_busid_by_unit(unit)); | |
698ec016 | 1210 | zfcp_erp_port_boxed(unit->port, 47, (u64)new_fsf_req); |
1da177e4 LT |
1211 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
1212 | | ZFCP_STATUS_FSFREQ_RETRY; | |
1213 | break; | |
1214 | ||
1215 | case FSF_LUN_BOXED: | |
1da177e4 LT |
1216 | ZFCP_LOG_INFO( |
1217 | "unit 0x%016Lx on port 0x%016Lx on adapter %s needs " | |
1218 | "to be reopened\n", | |
1219 | unit->fcp_lun, unit->port->wwpn, | |
1220 | zfcp_get_busid_by_unit(unit)); | |
698ec016 | 1221 | zfcp_erp_unit_boxed(unit, 48, (u64)new_fsf_req); |
1da177e4 LT |
1222 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
1223 | | ZFCP_STATUS_FSFREQ_RETRY; | |
1224 | break; | |
1225 | ||
1226 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
1227 | switch (new_fsf_req->qtcb->header.fsf_status_qual.word[0]) { |
1228 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
65a8d4e1 | 1229 | zfcp_test_link(unit->port); |
1da177e4 LT |
1230 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1231 | break; | |
1232 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 | 1233 | /* SCSI stack will escalate */ |
1da177e4 LT |
1234 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1235 | break; | |
1236 | default: | |
1237 | ZFCP_LOG_NORMAL | |
1238 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
1239 | new_fsf_req->qtcb->header.fsf_status_qual.word[0]); | |
1da177e4 LT |
1240 | break; |
1241 | } | |
1242 | break; | |
1243 | ||
1244 | case FSF_GOOD: | |
1da177e4 LT |
1245 | retval = 0; |
1246 | new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED; | |
1247 | break; | |
1248 | ||
1249 | default: | |
1250 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
1251 | "(debug info 0x%x)\n", | |
1252 | new_fsf_req->qtcb->header.fsf_status); | |
1da177e4 LT |
1253 | break; |
1254 | } | |
1255 | skip_fsfstatus: | |
1256 | return retval; | |
1257 | } | |
1258 | ||
1259 | /** | |
1260 | * zfcp_use_one_sbal - checks whether req buffer and resp bother each fit into | |
1261 | * one SBALE | |
1262 | * Two scatter-gather lists are passed, one for the reqeust and one for the | |
1263 | * response. | |
1264 | */ | |
1265 | static inline int | |
1266 | zfcp_use_one_sbal(struct scatterlist *req, int req_count, | |
1267 | struct scatterlist *resp, int resp_count) | |
1268 | { | |
1269 | return ((req_count == 1) && | |
1270 | (resp_count == 1) && | |
1271 | (((unsigned long) zfcp_sg_to_address(&req[0]) & | |
1272 | PAGE_MASK) == | |
1273 | ((unsigned long) (zfcp_sg_to_address(&req[0]) + | |
1274 | req[0].length - 1) & PAGE_MASK)) && | |
1275 | (((unsigned long) zfcp_sg_to_address(&resp[0]) & | |
1276 | PAGE_MASK) == | |
1277 | ((unsigned long) (zfcp_sg_to_address(&resp[0]) + | |
1278 | resp[0].length - 1) & PAGE_MASK))); | |
1279 | } | |
1280 | ||
1281 | /** | |
1282 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) | |
1283 | * @ct: pointer to struct zfcp_send_ct which conatins all needed data for | |
1284 | * the request | |
1285 | * @pool: pointer to memory pool, if non-null this pool is used to allocate | |
1286 | * a struct zfcp_fsf_req | |
1287 | * @erp_action: pointer to erp_action, if non-null the Generic Service request | |
1288 | * is sent within error recovery | |
1289 | */ | |
1290 | int | |
1291 | zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, | |
1292 | struct zfcp_erp_action *erp_action) | |
1293 | { | |
1294 | volatile struct qdio_buffer_element *sbale; | |
1295 | struct zfcp_port *port; | |
1296 | struct zfcp_adapter *adapter; | |
1297 | struct zfcp_fsf_req *fsf_req; | |
1298 | unsigned long lock_flags; | |
1299 | int bytes; | |
1300 | int ret = 0; | |
1301 | ||
1302 | port = ct->port; | |
1303 | adapter = port->adapter; | |
1304 | ||
1305 | ret = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC, | |
1306 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
1307 | pool, &lock_flags, &fsf_req); | |
1308 | if (ret < 0) { | |
1309 | ZFCP_LOG_INFO("error: Could not create CT request (FC-GS) for " | |
1310 | "adapter: %s\n", | |
1311 | zfcp_get_busid_by_adapter(adapter)); | |
1312 | goto failed_req; | |
1313 | } | |
1314 | ||
1da177e4 LT |
1315 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1316 | if (zfcp_use_one_sbal(ct->req, ct->req_count, | |
1317 | ct->resp, ct->resp_count)){ | |
1318 | /* both request buffer and response buffer | |
1319 | fit into one sbale each */ | |
1320 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ; | |
1321 | sbale[2].addr = zfcp_sg_to_address(&ct->req[0]); | |
1322 | sbale[2].length = ct->req[0].length; | |
1323 | sbale[3].addr = zfcp_sg_to_address(&ct->resp[0]); | |
1324 | sbale[3].length = ct->resp[0].length; | |
1325 | sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY; | |
aef4a983 | 1326 | } else if (adapter->adapter_features & |
1da177e4 LT |
1327 | FSF_FEATURE_ELS_CT_CHAINED_SBALS) { |
1328 | /* try to use chained SBALs */ | |
1329 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, | |
1330 | SBAL_FLAGS0_TYPE_WRITE_READ, | |
1331 | ct->req, ct->req_count, | |
1332 | ZFCP_MAX_SBALS_PER_CT_REQ); | |
1333 | if (bytes <= 0) { | |
1334 | ZFCP_LOG_INFO("error: creation of CT request failed " | |
1335 | "on adapter %s\n", | |
1336 | zfcp_get_busid_by_adapter(adapter)); | |
1337 | if (bytes == 0) | |
1338 | ret = -ENOMEM; | |
1339 | else | |
1340 | ret = bytes; | |
1341 | ||
1342 | goto failed_send; | |
1343 | } | |
1344 | fsf_req->qtcb->bottom.support.req_buf_length = bytes; | |
1345 | fsf_req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; | |
1346 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, | |
1347 | SBAL_FLAGS0_TYPE_WRITE_READ, | |
1348 | ct->resp, ct->resp_count, | |
1349 | ZFCP_MAX_SBALS_PER_CT_REQ); | |
1350 | if (bytes <= 0) { | |
1351 | ZFCP_LOG_INFO("error: creation of CT request failed " | |
1352 | "on adapter %s\n", | |
1353 | zfcp_get_busid_by_adapter(adapter)); | |
1354 | if (bytes == 0) | |
1355 | ret = -ENOMEM; | |
1356 | else | |
1357 | ret = bytes; | |
1358 | ||
1359 | goto failed_send; | |
1360 | } | |
1361 | fsf_req->qtcb->bottom.support.resp_buf_length = bytes; | |
1362 | } else { | |
1363 | /* reject send generic request */ | |
1364 | ZFCP_LOG_INFO( | |
1365 | "error: microcode does not support chained SBALs," | |
1366 | "CT request too big (adapter %s)\n", | |
1367 | zfcp_get_busid_by_adapter(adapter)); | |
1368 | ret = -EOPNOTSUPP; | |
1369 | goto failed_send; | |
1370 | } | |
1371 | ||
1372 | /* settings in QTCB */ | |
1373 | fsf_req->qtcb->header.port_handle = port->handle; | |
06506d00 AH |
1374 | fsf_req->qtcb->bottom.support.service_class = |
1375 | ZFCP_FC_SERVICE_CLASS_DEFAULT; | |
1da177e4 | 1376 | fsf_req->qtcb->bottom.support.timeout = ct->timeout; |
059c97d0 | 1377 | fsf_req->data = (unsigned long) ct; |
1da177e4 | 1378 | |
8a36e453 MS |
1379 | zfcp_san_dbf_event_ct_request(fsf_req); |
1380 | ||
2abbe866 AH |
1381 | if (erp_action) { |
1382 | erp_action->fsf_req = fsf_req; | |
1383 | fsf_req->erp_action = erp_action; | |
1384 | zfcp_erp_start_timer(fsf_req); | |
1385 | } else | |
1386 | zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1387 | ||
1388 | ret = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
1389 | if (ret) { |
1390 | ZFCP_LOG_DEBUG("error: initiation of CT request failed " | |
1391 | "(adapter %s, port 0x%016Lx)\n", | |
1392 | zfcp_get_busid_by_adapter(adapter), port->wwpn); | |
1393 | goto failed_send; | |
1394 | } | |
1395 | ||
1396 | ZFCP_LOG_DEBUG("CT request initiated (adapter %s, port 0x%016Lx)\n", | |
1397 | zfcp_get_busid_by_adapter(adapter), port->wwpn); | |
1398 | goto out; | |
1399 | ||
1400 | failed_send: | |
1401 | zfcp_fsf_req_free(fsf_req); | |
1402 | if (erp_action != NULL) { | |
1403 | erp_action->fsf_req = NULL; | |
1404 | } | |
1405 | failed_req: | |
1406 | out: | |
1407 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, | |
1408 | lock_flags); | |
1409 | return ret; | |
1410 | } | |
1411 | ||
1412 | /** | |
1413 | * zfcp_fsf_send_ct_handler - handler for Generic Service requests | |
1414 | * @fsf_req: pointer to struct zfcp_fsf_req | |
1415 | * | |
059c97d0 AH |
1416 | * Data specific for the Generic Service request is passed using |
1417 | * fsf_req->data. There we find the pointer to struct zfcp_send_ct. | |
1418 | * Usually a specific handler for the CT request is called which is | |
1419 | * found in this structure. | |
1da177e4 LT |
1420 | */ |
1421 | static int | |
1422 | zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *fsf_req) | |
1423 | { | |
1424 | struct zfcp_port *port; | |
1425 | struct zfcp_adapter *adapter; | |
1426 | struct zfcp_send_ct *send_ct; | |
1427 | struct fsf_qtcb_header *header; | |
1428 | struct fsf_qtcb_bottom_support *bottom; | |
1429 | int retval = -EINVAL; | |
1430 | u16 subtable, rule, counter; | |
1431 | ||
1432 | adapter = fsf_req->adapter; | |
059c97d0 | 1433 | send_ct = (struct zfcp_send_ct *) fsf_req->data; |
1da177e4 LT |
1434 | port = send_ct->port; |
1435 | header = &fsf_req->qtcb->header; | |
1436 | bottom = &fsf_req->qtcb->bottom.support; | |
1437 | ||
1438 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
1439 | goto skip_fsfstatus; | |
1440 | ||
1441 | /* evaluate FSF status in QTCB */ | |
1442 | switch (header->fsf_status) { | |
1443 | ||
1444 | case FSF_GOOD: | |
8a36e453 | 1445 | zfcp_san_dbf_event_ct_response(fsf_req); |
1da177e4 LT |
1446 | retval = 0; |
1447 | break; | |
1448 | ||
1449 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: | |
06506d00 AH |
1450 | ZFCP_LOG_INFO("error: adapter %s does not support fc " |
1451 | "class %d.\n", | |
1452 | zfcp_get_busid_by_port(port), | |
1453 | ZFCP_FC_SERVICE_CLASS_DEFAULT); | |
1da177e4 | 1454 | /* stop operation for this adapter */ |
9467a9b3 | 1455 | zfcp_erp_adapter_shutdown(adapter, 0, 123, (u64)fsf_req); |
1da177e4 LT |
1456 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1457 | break; | |
1458 | ||
1459 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
1460 | switch (header->fsf_status_qual.word[0]){ |
1461 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1462 | /* reopening link to port */ |
1da177e4 LT |
1463 | zfcp_test_link(port); |
1464 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1465 | break; | |
1466 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 | 1467 | /* ERP strategy will escalate */ |
1da177e4 LT |
1468 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1469 | break; | |
1470 | default: | |
1471 | ZFCP_LOG_INFO("bug: Wrong status qualifier 0x%x " | |
1472 | "arrived.\n", | |
1473 | header->fsf_status_qual.word[0]); | |
1474 | break; | |
1475 | } | |
1476 | break; | |
1477 | ||
1478 | case FSF_ACCESS_DENIED: | |
1da177e4 | 1479 | ZFCP_LOG_NORMAL("access denied, cannot send generic service " |
1d589edf | 1480 | "command (adapter %s, port d_id=0x%06x)\n", |
1da177e4 LT |
1481 | zfcp_get_busid_by_port(port), port->d_id); |
1482 | for (counter = 0; counter < 2; counter++) { | |
1483 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
1484 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
1485 | switch (subtable) { | |
1486 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
1487 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
1488 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
1489 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
1490 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
1491 | zfcp_act_subtable_type[subtable], rule); | |
1492 | break; | |
1493 | } | |
1494 | } | |
698ec016 | 1495 | zfcp_erp_port_access_denied(port, 55, (u64)fsf_req); |
1da177e4 LT |
1496 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1497 | break; | |
1498 | ||
1499 | case FSF_GENERIC_COMMAND_REJECTED: | |
1da177e4 | 1500 | ZFCP_LOG_INFO("generic service command rejected " |
1d589edf | 1501 | "(adapter %s, port d_id=0x%06x)\n", |
1da177e4 LT |
1502 | zfcp_get_busid_by_port(port), port->d_id); |
1503 | ZFCP_LOG_INFO("status qualifier:\n"); | |
1504 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO, | |
1505 | (char *) &header->fsf_status_qual, | |
1506 | sizeof (union fsf_status_qual)); | |
1da177e4 LT |
1507 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1508 | break; | |
1509 | ||
1510 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
1511 | ZFCP_LOG_DEBUG("Temporary port identifier 0x%x for port " |
1512 | "0x%016Lx on adapter %s invalid. This may " | |
1513 | "happen occasionally.\n", port->handle, | |
1514 | port->wwpn, zfcp_get_busid_by_port(port)); | |
1515 | ZFCP_LOG_INFO("status qualifier:\n"); | |
1516 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO, | |
1517 | (char *) &header->fsf_status_qual, | |
1518 | sizeof (union fsf_status_qual)); | |
9467a9b3 | 1519 | zfcp_erp_adapter_reopen(adapter, 0, 106, (u64)fsf_req); |
1da177e4 LT |
1520 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1521 | break; | |
1522 | ||
1523 | case FSF_PORT_BOXED: | |
1da177e4 | 1524 | ZFCP_LOG_INFO("port needs to be reopened " |
1d589edf | 1525 | "(adapter %s, port d_id=0x%06x)\n", |
1da177e4 | 1526 | zfcp_get_busid_by_port(port), port->d_id); |
698ec016 | 1527 | zfcp_erp_port_boxed(port, 49, (u64)fsf_req); |
1da177e4 LT |
1528 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
1529 | | ZFCP_STATUS_FSFREQ_RETRY; | |
1530 | break; | |
1531 | ||
1532 | /* following states should never occure, all cases avoided | |
1533 | in zfcp_fsf_send_ct - but who knows ... */ | |
1534 | case FSF_PAYLOAD_SIZE_MISMATCH: | |
1da177e4 LT |
1535 | ZFCP_LOG_INFO("payload size mismatch (adapter: %s, " |
1536 | "req_buf_length=%d, resp_buf_length=%d)\n", | |
1537 | zfcp_get_busid_by_adapter(adapter), | |
1538 | bottom->req_buf_length, bottom->resp_buf_length); | |
1539 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1540 | break; | |
1541 | case FSF_REQUEST_SIZE_TOO_LARGE: | |
1da177e4 LT |
1542 | ZFCP_LOG_INFO("request size too large (adapter: %s, " |
1543 | "req_buf_length=%d)\n", | |
1544 | zfcp_get_busid_by_adapter(adapter), | |
1545 | bottom->req_buf_length); | |
1546 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1547 | break; | |
1548 | case FSF_RESPONSE_SIZE_TOO_LARGE: | |
1da177e4 LT |
1549 | ZFCP_LOG_INFO("response size too large (adapter: %s, " |
1550 | "resp_buf_length=%d)\n", | |
1551 | zfcp_get_busid_by_adapter(adapter), | |
1552 | bottom->resp_buf_length); | |
1553 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1554 | break; | |
1555 | case FSF_SBAL_MISMATCH: | |
1da177e4 LT |
1556 | ZFCP_LOG_INFO("SBAL mismatch (adapter: %s, req_buf_length=%d, " |
1557 | "resp_buf_length=%d)\n", | |
1558 | zfcp_get_busid_by_adapter(adapter), | |
1559 | bottom->req_buf_length, bottom->resp_buf_length); | |
1560 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1561 | break; | |
1562 | ||
1563 | default: | |
1564 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
1565 | "(debug info 0x%x)\n", header->fsf_status); | |
1da177e4 LT |
1566 | break; |
1567 | } | |
1568 | ||
1569 | skip_fsfstatus: | |
1570 | send_ct->status = retval; | |
1571 | ||
1572 | if (send_ct->handler != NULL) | |
1573 | send_ct->handler(send_ct->handler_data); | |
1574 | ||
1575 | return retval; | |
1576 | } | |
1577 | ||
1578 | /** | |
1579 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) | |
1580 | * @els: pointer to struct zfcp_send_els which contains all needed data for | |
1581 | * the command. | |
1582 | */ | |
1583 | int | |
1584 | zfcp_fsf_send_els(struct zfcp_send_els *els) | |
1585 | { | |
1586 | volatile struct qdio_buffer_element *sbale; | |
1587 | struct zfcp_fsf_req *fsf_req; | |
13e1e1f0 | 1588 | u32 d_id; |
1da177e4 LT |
1589 | struct zfcp_adapter *adapter; |
1590 | unsigned long lock_flags; | |
1591 | int bytes; | |
1592 | int ret = 0; | |
1593 | ||
1594 | d_id = els->d_id; | |
1595 | adapter = els->adapter; | |
1596 | ||
1597 | ret = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS, | |
1598 | ZFCP_REQ_AUTO_CLEANUP, | |
1599 | NULL, &lock_flags, &fsf_req); | |
1600 | if (ret < 0) { | |
1601 | ZFCP_LOG_INFO("error: creation of ELS request failed " | |
1d589edf | 1602 | "(adapter %s, port d_id: 0x%06x)\n", |
1da177e4 LT |
1603 | zfcp_get_busid_by_adapter(adapter), d_id); |
1604 | goto failed_req; | |
1605 | } | |
1606 | ||
3f0ca62a CS |
1607 | if (unlikely(!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED, |
1608 | &els->port->status))) { | |
1609 | ret = -EBUSY; | |
1610 | goto port_blocked; | |
1611 | } | |
1612 | ||
1da177e4 LT |
1613 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1614 | if (zfcp_use_one_sbal(els->req, els->req_count, | |
1615 | els->resp, els->resp_count)){ | |
1616 | /* both request buffer and response buffer | |
1617 | fit into one sbale each */ | |
1618 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ; | |
1619 | sbale[2].addr = zfcp_sg_to_address(&els->req[0]); | |
1620 | sbale[2].length = els->req[0].length; | |
1621 | sbale[3].addr = zfcp_sg_to_address(&els->resp[0]); | |
1622 | sbale[3].length = els->resp[0].length; | |
1623 | sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY; | |
aef4a983 | 1624 | } else if (adapter->adapter_features & |
1da177e4 LT |
1625 | FSF_FEATURE_ELS_CT_CHAINED_SBALS) { |
1626 | /* try to use chained SBALs */ | |
1627 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, | |
1628 | SBAL_FLAGS0_TYPE_WRITE_READ, | |
1629 | els->req, els->req_count, | |
1630 | ZFCP_MAX_SBALS_PER_ELS_REQ); | |
1631 | if (bytes <= 0) { | |
1632 | ZFCP_LOG_INFO("error: creation of ELS request failed " | |
1d589edf | 1633 | "(adapter %s, port d_id: 0x%06x)\n", |
1da177e4 LT |
1634 | zfcp_get_busid_by_adapter(adapter), d_id); |
1635 | if (bytes == 0) { | |
1636 | ret = -ENOMEM; | |
1637 | } else { | |
1638 | ret = bytes; | |
1639 | } | |
1640 | goto failed_send; | |
1641 | } | |
1642 | fsf_req->qtcb->bottom.support.req_buf_length = bytes; | |
1643 | fsf_req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; | |
1644 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, | |
1645 | SBAL_FLAGS0_TYPE_WRITE_READ, | |
1646 | els->resp, els->resp_count, | |
1647 | ZFCP_MAX_SBALS_PER_ELS_REQ); | |
1648 | if (bytes <= 0) { | |
1649 | ZFCP_LOG_INFO("error: creation of ELS request failed " | |
1d589edf | 1650 | "(adapter %s, port d_id: 0x%06x)\n", |
1da177e4 LT |
1651 | zfcp_get_busid_by_adapter(adapter), d_id); |
1652 | if (bytes == 0) { | |
1653 | ret = -ENOMEM; | |
1654 | } else { | |
1655 | ret = bytes; | |
1656 | } | |
1657 | goto failed_send; | |
1658 | } | |
1659 | fsf_req->qtcb->bottom.support.resp_buf_length = bytes; | |
1660 | } else { | |
1661 | /* reject request */ | |
1662 | ZFCP_LOG_INFO("error: microcode does not support chained SBALs" | |
1663 | ", ELS request too big (adapter %s, " | |
1d589edf | 1664 | "port d_id: 0x%06x)\n", |
1da177e4 LT |
1665 | zfcp_get_busid_by_adapter(adapter), d_id); |
1666 | ret = -EOPNOTSUPP; | |
1667 | goto failed_send; | |
1668 | } | |
1669 | ||
1670 | /* settings in QTCB */ | |
1671 | fsf_req->qtcb->bottom.support.d_id = d_id; | |
06506d00 AH |
1672 | fsf_req->qtcb->bottom.support.service_class = |
1673 | ZFCP_FC_SERVICE_CLASS_DEFAULT; | |
1da177e4 | 1674 | fsf_req->qtcb->bottom.support.timeout = ZFCP_ELS_TIMEOUT; |
059c97d0 | 1675 | fsf_req->data = (unsigned long) els; |
1da177e4 LT |
1676 | |
1677 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
1678 | ||
8a36e453 MS |
1679 | zfcp_san_dbf_event_els_request(fsf_req); |
1680 | ||
2abbe866 AH |
1681 | zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); |
1682 | ret = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
1683 | if (ret) { |
1684 | ZFCP_LOG_DEBUG("error: initiation of ELS request failed " | |
1d589edf | 1685 | "(adapter %s, port d_id: 0x%06x)\n", |
1da177e4 LT |
1686 | zfcp_get_busid_by_adapter(adapter), d_id); |
1687 | goto failed_send; | |
1688 | } | |
1689 | ||
1690 | ZFCP_LOG_DEBUG("ELS request initiated (adapter %s, port d_id: " | |
1d589edf | 1691 | "0x%06x)\n", zfcp_get_busid_by_adapter(adapter), d_id); |
1da177e4 LT |
1692 | goto out; |
1693 | ||
3f0ca62a | 1694 | port_blocked: |
1da177e4 LT |
1695 | failed_send: |
1696 | zfcp_fsf_req_free(fsf_req); | |
1697 | ||
1698 | failed_req: | |
1699 | out: | |
1700 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, | |
1701 | lock_flags); | |
1702 | ||
1703 | return ret; | |
1704 | } | |
1705 | ||
1706 | /** | |
1707 | * zfcp_fsf_send_els_handler - handler for ELS commands | |
1708 | * @fsf_req: pointer to struct zfcp_fsf_req | |
1709 | * | |
059c97d0 AH |
1710 | * Data specific for the ELS command is passed using |
1711 | * fsf_req->data. There we find the pointer to struct zfcp_send_els. | |
1712 | * Usually a specific handler for the ELS command is called which is | |
1713 | * found in this structure. | |
1da177e4 LT |
1714 | */ |
1715 | static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *fsf_req) | |
1716 | { | |
1717 | struct zfcp_adapter *adapter; | |
1da177e4 | 1718 | struct zfcp_port *port; |
13e1e1f0 | 1719 | u32 d_id; |
1da177e4 LT |
1720 | struct fsf_qtcb_header *header; |
1721 | struct fsf_qtcb_bottom_support *bottom; | |
1722 | struct zfcp_send_els *send_els; | |
1723 | int retval = -EINVAL; | |
1724 | u16 subtable, rule, counter; | |
1725 | ||
059c97d0 | 1726 | send_els = (struct zfcp_send_els *) fsf_req->data; |
1da177e4 | 1727 | adapter = send_els->adapter; |
64b29a13 | 1728 | port = send_els->port; |
1da177e4 LT |
1729 | d_id = send_els->d_id; |
1730 | header = &fsf_req->qtcb->header; | |
1731 | bottom = &fsf_req->qtcb->bottom.support; | |
1732 | ||
1733 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
1734 | goto skip_fsfstatus; | |
1735 | ||
1736 | switch (header->fsf_status) { | |
1737 | ||
1738 | case FSF_GOOD: | |
8a36e453 | 1739 | zfcp_san_dbf_event_els_response(fsf_req); |
1da177e4 LT |
1740 | retval = 0; |
1741 | break; | |
1742 | ||
1743 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: | |
06506d00 AH |
1744 | ZFCP_LOG_INFO("error: adapter %s does not support fc " |
1745 | "class %d.\n", | |
1746 | zfcp_get_busid_by_adapter(adapter), | |
1747 | ZFCP_FC_SERVICE_CLASS_DEFAULT); | |
1da177e4 | 1748 | /* stop operation for this adapter */ |
9467a9b3 | 1749 | zfcp_erp_adapter_shutdown(adapter, 0, 124, (u64)fsf_req); |
1da177e4 LT |
1750 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1751 | break; | |
1752 | ||
1753 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
1754 | switch (header->fsf_status_qual.word[0]){ |
1755 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
64b29a13 AH |
1756 | if (port && (send_els->ls_code != ZFCP_LS_ADISC)) |
1757 | zfcp_test_link(port); | |
1da177e4 LT |
1758 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1759 | break; | |
1760 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
1761 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1762 | retval = | |
1763 | zfcp_handle_els_rjt(header->fsf_status_qual.word[1], | |
1764 | (struct zfcp_ls_rjt_par *) | |
1765 | &header->fsf_status_qual.word[2]); | |
1766 | break; | |
1767 | case FSF_SQ_RETRY_IF_POSSIBLE: | |
1da177e4 LT |
1768 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1769 | break; | |
1770 | default: | |
1771 | ZFCP_LOG_INFO("bug: Wrong status qualifier 0x%x\n", | |
1772 | header->fsf_status_qual.word[0]); | |
1773 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO, | |
1774 | (char*)header->fsf_status_qual.word, 16); | |
1775 | } | |
1776 | break; | |
1777 | ||
1778 | case FSF_ELS_COMMAND_REJECTED: | |
1da177e4 LT |
1779 | ZFCP_LOG_INFO("ELS has been rejected because command filter " |
1780 | "prohibited sending " | |
1d589edf | 1781 | "(adapter: %s, port d_id: 0x%06x)\n", |
1da177e4 LT |
1782 | zfcp_get_busid_by_adapter(adapter), d_id); |
1783 | ||
1784 | break; | |
1785 | ||
1786 | case FSF_PAYLOAD_SIZE_MISMATCH: | |
1da177e4 LT |
1787 | ZFCP_LOG_INFO( |
1788 | "ELS request size and ELS response size must be either " | |
1789 | "both 0, or both greater than 0 " | |
1790 | "(adapter: %s, req_buf_length=%d resp_buf_length=%d)\n", | |
1791 | zfcp_get_busid_by_adapter(adapter), | |
1792 | bottom->req_buf_length, | |
1793 | bottom->resp_buf_length); | |
1794 | break; | |
1795 | ||
1796 | case FSF_REQUEST_SIZE_TOO_LARGE: | |
1da177e4 LT |
1797 | ZFCP_LOG_INFO( |
1798 | "Length of the ELS request buffer, " | |
1799 | "specified in QTCB bottom, " | |
1800 | "exceeds the size of the buffers " | |
1801 | "that have been allocated for ELS request data " | |
1802 | "(adapter: %s, req_buf_length=%d)\n", | |
1803 | zfcp_get_busid_by_adapter(adapter), | |
1804 | bottom->req_buf_length); | |
1805 | break; | |
1806 | ||
1807 | case FSF_RESPONSE_SIZE_TOO_LARGE: | |
1da177e4 LT |
1808 | ZFCP_LOG_INFO( |
1809 | "Length of the ELS response buffer, " | |
1810 | "specified in QTCB bottom, " | |
1811 | "exceeds the size of the buffers " | |
1812 | "that have been allocated for ELS response data " | |
1813 | "(adapter: %s, resp_buf_length=%d)\n", | |
1814 | zfcp_get_busid_by_adapter(adapter), | |
1815 | bottom->resp_buf_length); | |
1816 | break; | |
1817 | ||
1818 | case FSF_SBAL_MISMATCH: | |
1819 | /* should never occure, avoided in zfcp_fsf_send_els */ | |
1da177e4 LT |
1820 | ZFCP_LOG_INFO("SBAL mismatch (adapter: %s, req_buf_length=%d, " |
1821 | "resp_buf_length=%d)\n", | |
1822 | zfcp_get_busid_by_adapter(adapter), | |
1823 | bottom->req_buf_length, bottom->resp_buf_length); | |
1824 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1825 | break; | |
1826 | ||
1827 | case FSF_ACCESS_DENIED: | |
1da177e4 | 1828 | ZFCP_LOG_NORMAL("access denied, cannot send ELS command " |
1d589edf | 1829 | "(adapter %s, port d_id=0x%06x)\n", |
1da177e4 LT |
1830 | zfcp_get_busid_by_adapter(adapter), d_id); |
1831 | for (counter = 0; counter < 2; counter++) { | |
1832 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
1833 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
1834 | switch (subtable) { | |
1835 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
1836 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
1837 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
1838 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
1839 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
1840 | zfcp_act_subtable_type[subtable], rule); | |
1841 | break; | |
1842 | } | |
1843 | } | |
1da177e4 | 1844 | if (port != NULL) |
698ec016 | 1845 | zfcp_erp_port_access_denied(port, 56, (u64)fsf_req); |
1da177e4 LT |
1846 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1847 | break; | |
1848 | ||
1849 | default: | |
1850 | ZFCP_LOG_NORMAL( | |
1851 | "bug: An unknown FSF Status was presented " | |
1852 | "(adapter: %s, fsf_status=0x%08x)\n", | |
1853 | zfcp_get_busid_by_adapter(adapter), | |
1854 | header->fsf_status); | |
1da177e4 LT |
1855 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1856 | break; | |
1857 | } | |
1858 | ||
1859 | skip_fsfstatus: | |
1860 | send_els->status = retval; | |
1861 | ||
aa551daf | 1862 | if (send_els->handler) |
1da177e4 LT |
1863 | send_els->handler(send_els->handler_data); |
1864 | ||
1865 | return retval; | |
1866 | } | |
1867 | ||
1da177e4 LT |
1868 | int |
1869 | zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) | |
1870 | { | |
1871 | volatile struct qdio_buffer_element *sbale; | |
2abbe866 | 1872 | struct zfcp_fsf_req *fsf_req; |
52ef11a7 | 1873 | struct zfcp_adapter *adapter = erp_action->adapter; |
1da177e4 | 1874 | unsigned long lock_flags; |
52ef11a7 | 1875 | int retval; |
1da177e4 LT |
1876 | |
1877 | /* setup new FSF request */ | |
52ef11a7 | 1878 | retval = zfcp_fsf_req_create(adapter, |
1da177e4 LT |
1879 | FSF_QTCB_EXCHANGE_CONFIG_DATA, |
1880 | ZFCP_REQ_AUTO_CLEANUP, | |
52ef11a7 | 1881 | adapter->pool.fsf_req_erp, |
2abbe866 | 1882 | &lock_flags, &fsf_req); |
52ef11a7 | 1883 | if (retval) { |
1da177e4 LT |
1884 | ZFCP_LOG_INFO("error: Could not create exchange configuration " |
1885 | "data request for adapter %s.\n", | |
52ef11a7 SS |
1886 | zfcp_get_busid_by_adapter(adapter)); |
1887 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, | |
1888 | lock_flags); | |
1889 | return retval; | |
1da177e4 LT |
1890 | } |
1891 | ||
2abbe866 | 1892 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
52ef11a7 SS |
1893 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1894 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1895 | |
2abbe866 | 1896 | fsf_req->qtcb->bottom.config.feature_selection = |
aef4a983 MS |
1897 | FSF_FEATURE_CFDC | |
1898 | FSF_FEATURE_LUN_SHARING | | |
9eb69aff | 1899 | FSF_FEATURE_NOTIFICATION_LOST | |
aef4a983 | 1900 | FSF_FEATURE_UPDATE_ALERT; |
2abbe866 AH |
1901 | fsf_req->erp_action = erp_action; |
1902 | erp_action->fsf_req = fsf_req; | |
1da177e4 | 1903 | |
2abbe866 AH |
1904 | zfcp_erp_start_timer(fsf_req); |
1905 | retval = zfcp_fsf_req_send(fsf_req); | |
52ef11a7 SS |
1906 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, |
1907 | lock_flags); | |
1da177e4 | 1908 | if (retval) { |
52ef11a7 SS |
1909 | ZFCP_LOG_INFO("error: Could not send exchange configuration " |
1910 | "data command on the adapter %s\n", | |
1911 | zfcp_get_busid_by_adapter(adapter)); | |
2abbe866 | 1912 | zfcp_fsf_req_free(fsf_req); |
1da177e4 | 1913 | erp_action->fsf_req = NULL; |
1da177e4 | 1914 | } |
52ef11a7 SS |
1915 | else |
1916 | ZFCP_LOG_DEBUG("exchange configuration data request initiated " | |
1917 | "(adapter %s)\n", | |
1918 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 | 1919 | |
52ef11a7 SS |
1920 | return retval; |
1921 | } | |
1da177e4 | 1922 | |
52ef11a7 SS |
1923 | int |
1924 | zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter, | |
1925 | struct fsf_qtcb_bottom_config *data) | |
1926 | { | |
1927 | volatile struct qdio_buffer_element *sbale; | |
1928 | struct zfcp_fsf_req *fsf_req; | |
1929 | unsigned long lock_flags; | |
1930 | int retval; | |
1931 | ||
1932 | /* setup new FSF request */ | |
1933 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA, | |
1934 | 0, NULL, &lock_flags, &fsf_req); | |
1935 | if (retval) { | |
1936 | ZFCP_LOG_INFO("error: Could not create exchange configuration " | |
1937 | "data request for adapter %s.\n", | |
1938 | zfcp_get_busid_by_adapter(adapter)); | |
1939 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, | |
1940 | lock_flags); | |
1941 | return retval; | |
1942 | } | |
1943 | ||
1944 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
1945 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1946 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1947 | ||
1948 | fsf_req->qtcb->bottom.config.feature_selection = | |
1949 | FSF_FEATURE_CFDC | | |
1950 | FSF_FEATURE_LUN_SHARING | | |
1951 | FSF_FEATURE_NOTIFICATION_LOST | | |
1952 | FSF_FEATURE_UPDATE_ALERT; | |
1953 | ||
1954 | if (data) | |
1955 | fsf_req->data = (unsigned long) data; | |
1956 | ||
1957 | zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1958 | retval = zfcp_fsf_req_send(fsf_req); | |
1959 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, | |
1da177e4 | 1960 | lock_flags); |
52ef11a7 SS |
1961 | if (retval) |
1962 | ZFCP_LOG_INFO("error: Could not send exchange configuration " | |
1963 | "data command on the adapter %s\n", | |
1964 | zfcp_get_busid_by_adapter(adapter)); | |
1965 | else | |
1966 | wait_event(fsf_req->completion_wq, | |
1967 | fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
1968 | ||
1969 | zfcp_fsf_req_free(fsf_req); | |
1970 | ||
1da177e4 LT |
1971 | return retval; |
1972 | } | |
1973 | ||
1974 | /** | |
1975 | * zfcp_fsf_exchange_config_evaluate | |
1976 | * @fsf_req: fsf_req which belongs to xchg config data request | |
1977 | * @xchg_ok: specifies if xchg config data was incomplete or complete (0/1) | |
1978 | * | |
1979 | * returns: -EIO on error, 0 otherwise | |
1980 | */ | |
1981 | static int | |
1982 | zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *fsf_req, int xchg_ok) | |
1983 | { | |
1984 | struct fsf_qtcb_bottom_config *bottom; | |
1985 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
13e1e1f0 | 1986 | struct Scsi_Host *shost = adapter->scsi_host; |
1da177e4 LT |
1987 | |
1988 | bottom = &fsf_req->qtcb->bottom.config; | |
1989 | ZFCP_LOG_DEBUG("low/high QTCB version 0x%x/0x%x of FSF\n", | |
1990 | bottom->low_qtcb_version, bottom->high_qtcb_version); | |
1991 | adapter->fsf_lic_version = bottom->lic_version; | |
aef4a983 MS |
1992 | adapter->adapter_features = bottom->adapter_features; |
1993 | adapter->connection_features = bottom->connection_features; | |
6f71d9bc JB |
1994 | adapter->peer_wwpn = 0; |
1995 | adapter->peer_wwnn = 0; | |
1996 | adapter->peer_d_id = 0; | |
1da177e4 LT |
1997 | |
1998 | if (xchg_ok) { | |
52ef11a7 SS |
1999 | |
2000 | if (fsf_req->data) | |
2001 | memcpy((struct fsf_qtcb_bottom_config *) fsf_req->data, | |
2002 | bottom, sizeof (struct fsf_qtcb_bottom_config)); | |
2003 | ||
13e1e1f0 AH |
2004 | fc_host_node_name(shost) = bottom->nport_serv_param.wwnn; |
2005 | fc_host_port_name(shost) = bottom->nport_serv_param.wwpn; | |
2006 | fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK; | |
2007 | fc_host_speed(shost) = bottom->fc_link_speed; | |
52ef11a7 SS |
2008 | fc_host_supported_classes(shost) = |
2009 | FC_COS_CLASS2 | FC_COS_CLASS3; | |
1da177e4 | 2010 | adapter->hydra_version = bottom->adapter_type; |
ad757cdf AH |
2011 | if (fc_host_permanent_port_name(shost) == -1) |
2012 | fc_host_permanent_port_name(shost) = | |
2013 | fc_host_port_name(shost); | |
2014 | if (bottom->fc_topology == FSF_TOPO_P2P) { | |
2015 | adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK; | |
2016 | adapter->peer_wwpn = bottom->plogi_payload.wwpn; | |
2017 | adapter->peer_wwnn = bottom->plogi_payload.wwnn; | |
2018 | fc_host_port_type(shost) = FC_PORTTYPE_PTP; | |
2019 | } else if (bottom->fc_topology == FSF_TOPO_FABRIC) | |
2020 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
2021 | else if (bottom->fc_topology == FSF_TOPO_AL) | |
2022 | fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; | |
2023 | else | |
2024 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; | |
1da177e4 | 2025 | } else { |
13e1e1f0 AH |
2026 | fc_host_node_name(shost) = 0; |
2027 | fc_host_port_name(shost) = 0; | |
2028 | fc_host_port_id(shost) = 0; | |
2029 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; | |
ad757cdf | 2030 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; |
1da177e4 LT |
2031 | adapter->hydra_version = 0; |
2032 | } | |
2033 | ||
aef4a983 | 2034 | if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) { |
1da177e4 | 2035 | adapter->hardware_version = bottom->hardware_version; |
13e1e1f0 AH |
2036 | memcpy(fc_host_serial_number(shost), bottom->serial_number, |
2037 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
2038 | EBCASC(fc_host_serial_number(shost), | |
2039 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
1da177e4 LT |
2040 | } |
2041 | ||
52ef11a7 SS |
2042 | ZFCP_LOG_NORMAL("The adapter %s reported the following " |
2043 | "characteristics:\n" | |
13e1e1f0 AH |
2044 | "WWNN 0x%016Lx, " |
2045 | "WWPN 0x%016Lx, " | |
1d589edf | 2046 | "S_ID 0x%06x,\n" |
13e1e1f0 AH |
2047 | "adapter version 0x%x, " |
2048 | "LIC version 0x%x, " | |
2049 | "FC link speed %d Gb/s\n", | |
2050 | zfcp_get_busid_by_adapter(adapter), | |
2051 | (wwn_t) fc_host_node_name(shost), | |
2052 | (wwn_t) fc_host_port_name(shost), | |
2053 | fc_host_port_id(shost), | |
2054 | adapter->hydra_version, | |
2055 | adapter->fsf_lic_version, | |
2056 | fc_host_speed(shost)); | |
1da177e4 LT |
2057 | if (ZFCP_QTCB_VERSION < bottom->low_qtcb_version) { |
2058 | ZFCP_LOG_NORMAL("error: the adapter %s " | |
2059 | "only supports newer control block " | |
2060 | "versions in comparison to this device " | |
2061 | "driver (try updated device driver)\n", | |
2062 | zfcp_get_busid_by_adapter(adapter)); | |
9467a9b3 | 2063 | zfcp_erp_adapter_shutdown(adapter, 0, 125, (u64)fsf_req); |
1da177e4 LT |
2064 | return -EIO; |
2065 | } | |
2066 | if (ZFCP_QTCB_VERSION > bottom->high_qtcb_version) { | |
2067 | ZFCP_LOG_NORMAL("error: the adapter %s " | |
2068 | "only supports older control block " | |
2069 | "versions than this device driver uses" | |
2070 | "(consider a microcode upgrade)\n", | |
2071 | zfcp_get_busid_by_adapter(adapter)); | |
9467a9b3 | 2072 | zfcp_erp_adapter_shutdown(adapter, 0, 126, (u64)fsf_req); |
1da177e4 LT |
2073 | return -EIO; |
2074 | } | |
2075 | return 0; | |
2076 | } | |
2077 | ||
52ef11a7 | 2078 | /** |
1da177e4 LT |
2079 | * function: zfcp_fsf_exchange_config_data_handler |
2080 | * | |
2081 | * purpose: is called for finished Exchange Configuration Data command | |
2082 | * | |
2083 | * returns: | |
2084 | */ | |
2085 | static int | |
2086 | zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *fsf_req) | |
2087 | { | |
2088 | struct fsf_qtcb_bottom_config *bottom; | |
2089 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
aef4a983 | 2090 | struct fsf_qtcb *qtcb = fsf_req->qtcb; |
1da177e4 LT |
2091 | |
2092 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
2093 | return -EIO; | |
2094 | ||
aef4a983 | 2095 | switch (qtcb->header.fsf_status) { |
1da177e4 LT |
2096 | |
2097 | case FSF_GOOD: | |
1da177e4 LT |
2098 | if (zfcp_fsf_exchange_config_evaluate(fsf_req, 1)) |
2099 | return -EIO; | |
2100 | ||
ad757cdf AH |
2101 | switch (fc_host_port_type(adapter->scsi_host)) { |
2102 | case FC_PORTTYPE_PTP: | |
6f71d9bc JB |
2103 | ZFCP_LOG_NORMAL("Point-to-Point fibrechannel " |
2104 | "configuration detected at adapter %s\n" | |
2105 | "Peer WWNN 0x%016llx, " | |
2106 | "peer WWPN 0x%016llx, " | |
2107 | "peer d_id 0x%06x\n", | |
2108 | zfcp_get_busid_by_adapter(adapter), | |
2109 | adapter->peer_wwnn, | |
2110 | adapter->peer_wwpn, | |
2111 | adapter->peer_d_id); | |
6f71d9bc | 2112 | break; |
ad757cdf | 2113 | case FC_PORTTYPE_NLPORT: |
1da177e4 LT |
2114 | ZFCP_LOG_NORMAL("error: Arbitrated loop fibrechannel " |
2115 | "topology detected at adapter %s " | |
2116 | "unsupported, shutting down adapter\n", | |
2117 | zfcp_get_busid_by_adapter(adapter)); | |
9467a9b3 | 2118 | zfcp_erp_adapter_shutdown(adapter, 0, 127, (u64)fsf_req); |
1da177e4 | 2119 | return -EIO; |
ad757cdf | 2120 | case FC_PORTTYPE_NPORT: |
aef4a983 | 2121 | ZFCP_LOG_NORMAL("Switched fabric fibrechannel " |
52ef11a7 SS |
2122 | "network detected at adapter %s.\n", |
2123 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 LT |
2124 | break; |
2125 | default: | |
2126 | ZFCP_LOG_NORMAL("bug: The fibrechannel topology " | |
2127 | "reported by the exchange " | |
2128 | "configuration command for " | |
2129 | "the adapter %s is not " | |
2130 | "of a type known to the zfcp " | |
2131 | "driver, shutting down adapter\n", | |
2132 | zfcp_get_busid_by_adapter(adapter)); | |
9467a9b3 | 2133 | zfcp_erp_adapter_shutdown(adapter, 0, 128, (u64)fsf_req); |
1da177e4 LT |
2134 | return -EIO; |
2135 | } | |
aef4a983 | 2136 | bottom = &qtcb->bottom.config; |
1da177e4 LT |
2137 | if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { |
2138 | ZFCP_LOG_NORMAL("bug: Maximum QTCB size (%d bytes) " | |
2139 | "allowed by the adapter %s " | |
2140 | "is lower than the minimum " | |
2141 | "required by the driver (%ld bytes).\n", | |
2142 | bottom->max_qtcb_size, | |
2143 | zfcp_get_busid_by_adapter(adapter), | |
2144 | sizeof(struct fsf_qtcb)); | |
9467a9b3 | 2145 | zfcp_erp_adapter_shutdown(adapter, 0, 129, (u64)fsf_req); |
1da177e4 LT |
2146 | return -EIO; |
2147 | } | |
2148 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, | |
2149 | &adapter->status); | |
2150 | break; | |
2151 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: | |
1da177e4 LT |
2152 | if (zfcp_fsf_exchange_config_evaluate(fsf_req, 0)) |
2153 | return -EIO; | |
2154 | ||
52ef11a7 SS |
2155 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, |
2156 | &adapter->status); | |
aef4a983 | 2157 | |
698ec016 | 2158 | zfcp_fsf_link_down_info_eval(fsf_req, 42, |
aef4a983 | 2159 | &qtcb->header.fsf_status_qual.link_down_info); |
1da177e4 LT |
2160 | break; |
2161 | default: | |
9467a9b3 | 2162 | zfcp_erp_adapter_shutdown(adapter, 0, 130, (u64)fsf_req); |
1da177e4 LT |
2163 | return -EIO; |
2164 | } | |
2165 | return 0; | |
2166 | } | |
2167 | ||
2168 | /** | |
2169 | * zfcp_fsf_exchange_port_data - request information about local port | |
aef4a983 | 2170 | * @erp_action: ERP action for the adapter for which port data is requested |
1da177e4 LT |
2171 | */ |
2172 | int | |
52ef11a7 | 2173 | zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) |
1da177e4 LT |
2174 | { |
2175 | volatile struct qdio_buffer_element *sbale; | |
52ef11a7 SS |
2176 | struct zfcp_fsf_req *fsf_req; |
2177 | struct zfcp_adapter *adapter = erp_action->adapter; | |
2abbe866 | 2178 | unsigned long lock_flags; |
52ef11a7 | 2179 | int retval; |
1da177e4 | 2180 | |
aef4a983 | 2181 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) { |
1da177e4 | 2182 | ZFCP_LOG_INFO("error: exchange port data " |
52ef11a7 | 2183 | "command not supported by adapter %s\n", |
1da177e4 | 2184 | zfcp_get_busid_by_adapter(adapter)); |
52ef11a7 SS |
2185 | return -EOPNOTSUPP; |
2186 | } | |
1da177e4 | 2187 | |
1da177e4 LT |
2188 | /* setup new FSF request */ |
2189 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, | |
52ef11a7 SS |
2190 | ZFCP_REQ_AUTO_CLEANUP, |
2191 | adapter->pool.fsf_req_erp, | |
2192 | &lock_flags, &fsf_req); | |
2193 | if (retval) { | |
1da177e4 | 2194 | ZFCP_LOG_INFO("error: Out of resources. Could not create an " |
ceb3dfba | 2195 | "exchange port data request for " |
52ef11a7 | 2196 | "the adapter %s.\n", |
1da177e4 LT |
2197 | zfcp_get_busid_by_adapter(adapter)); |
2198 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, | |
2199 | lock_flags); | |
2448c459 | 2200 | return retval; |
aef4a983 MS |
2201 | } |
2202 | ||
1da177e4 | 2203 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
52ef11a7 SS |
2204 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
2205 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 2206 | |
52ef11a7 SS |
2207 | erp_action->fsf_req = fsf_req; |
2208 | fsf_req->erp_action = erp_action; | |
2209 | zfcp_erp_start_timer(fsf_req); | |
1da177e4 | 2210 | |
2abbe866 | 2211 | retval = zfcp_fsf_req_send(fsf_req); |
52ef11a7 SS |
2212 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); |
2213 | ||
1da177e4 LT |
2214 | if (retval) { |
2215 | ZFCP_LOG_INFO("error: Could not send an exchange port data " | |
52ef11a7 | 2216 | "command on the adapter %s\n", |
1da177e4 LT |
2217 | zfcp_get_busid_by_adapter(adapter)); |
2218 | zfcp_fsf_req_free(fsf_req); | |
52ef11a7 SS |
2219 | erp_action->fsf_req = NULL; |
2220 | } | |
2221 | else | |
2222 | ZFCP_LOG_DEBUG("exchange port data request initiated " | |
2223 | "(adapter %s)\n", | |
2224 | zfcp_get_busid_by_adapter(adapter)); | |
2225 | return retval; | |
2226 | } | |
2227 | ||
2228 | ||
2229 | /** | |
2230 | * zfcp_fsf_exchange_port_data_sync - request information about local port | |
2231 | * and wait until information is ready | |
2232 | */ | |
2233 | int | |
2234 | zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, | |
2235 | struct fsf_qtcb_bottom_port *data) | |
2236 | { | |
2237 | volatile struct qdio_buffer_element *sbale; | |
2238 | struct zfcp_fsf_req *fsf_req; | |
2239 | unsigned long lock_flags; | |
2240 | int retval; | |
2241 | ||
2242 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) { | |
2243 | ZFCP_LOG_INFO("error: exchange port data " | |
2244 | "command not supported by adapter %s\n", | |
2245 | zfcp_get_busid_by_adapter(adapter)); | |
2246 | return -EOPNOTSUPP; | |
2247 | } | |
2248 | ||
2249 | /* setup new FSF request */ | |
2250 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, | |
2251 | 0, NULL, &lock_flags, &fsf_req); | |
2252 | if (retval) { | |
2253 | ZFCP_LOG_INFO("error: Out of resources. Could not create an " | |
ceb3dfba | 2254 | "exchange port data request for " |
52ef11a7 SS |
2255 | "the adapter %s.\n", |
2256 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 LT |
2257 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, |
2258 | lock_flags); | |
2448c459 | 2259 | return retval; |
1da177e4 LT |
2260 | } |
2261 | ||
52ef11a7 SS |
2262 | if (data) |
2263 | fsf_req->data = (unsigned long) data; | |
2264 | ||
2265 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
2266 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
2267 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2268 | ||
2269 | zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); | |
2270 | retval = zfcp_fsf_req_send(fsf_req); | |
2448c459 | 2271 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); |
1da177e4 | 2272 | |
52ef11a7 SS |
2273 | if (retval) |
2274 | ZFCP_LOG_INFO("error: Could not send an exchange port data " | |
2275 | "command on the adapter %s\n", | |
2276 | zfcp_get_busid_by_adapter(adapter)); | |
2277 | else | |
2448c459 AH |
2278 | wait_event(fsf_req->completion_wq, |
2279 | fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
52ef11a7 SS |
2280 | |
2281 | zfcp_fsf_req_free(fsf_req); | |
2282 | ||
1da177e4 LT |
2283 | return retval; |
2284 | } | |
2285 | ||
2f8f3ed5 AH |
2286 | /** |
2287 | * zfcp_fsf_exchange_port_evaluate | |
2288 | * @fsf_req: fsf_req which belongs to xchg port data request | |
2289 | * @xchg_ok: specifies if xchg port data was incomplete or complete (0/1) | |
2290 | */ | |
2291 | static void | |
2292 | zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *fsf_req, int xchg_ok) | |
2293 | { | |
2294 | struct zfcp_adapter *adapter; | |
52ef11a7 | 2295 | struct fsf_qtcb_bottom_port *bottom; |
2f8f3ed5 AH |
2296 | struct Scsi_Host *shost; |
2297 | ||
2298 | adapter = fsf_req->adapter; | |
52ef11a7 | 2299 | bottom = &fsf_req->qtcb->bottom.port; |
2f8f3ed5 AH |
2300 | shost = adapter->scsi_host; |
2301 | ||
52ef11a7 SS |
2302 | if (fsf_req->data) |
2303 | memcpy((struct fsf_qtcb_bottom_port*) fsf_req->data, bottom, | |
2304 | sizeof(struct fsf_qtcb_bottom_port)); | |
2f8f3ed5 AH |
2305 | |
2306 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) | |
2307 | fc_host_permanent_port_name(shost) = bottom->wwpn; | |
2308 | else | |
2309 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
2310 | fc_host_maxframe_size(shost) = bottom->maximum_frame_size; | |
2311 | fc_host_supported_speeds(shost) = bottom->supported_speed; | |
2312 | } | |
1da177e4 LT |
2313 | |
2314 | /** | |
2315 | * zfcp_fsf_exchange_port_data_handler - handler for exchange_port_data request | |
2316 | * @fsf_req: pointer to struct zfcp_fsf_req | |
2317 | */ | |
2318 | static void | |
2319 | zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *fsf_req) | |
2320 | { | |
2f8f3ed5 AH |
2321 | struct zfcp_adapter *adapter; |
2322 | struct fsf_qtcb *qtcb; | |
2323 | ||
2324 | adapter = fsf_req->adapter; | |
2325 | qtcb = fsf_req->qtcb; | |
1da177e4 LT |
2326 | |
2327 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
2328 | return; | |
2329 | ||
aef4a983 | 2330 | switch (qtcb->header.fsf_status) { |
1da177e4 | 2331 | case FSF_GOOD: |
2f8f3ed5 | 2332 | zfcp_fsf_exchange_port_evaluate(fsf_req, 1); |
aef4a983 | 2333 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status); |
aef4a983 | 2334 | break; |
aef4a983 | 2335 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
2f8f3ed5 | 2336 | zfcp_fsf_exchange_port_evaluate(fsf_req, 0); |
aef4a983 | 2337 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status); |
698ec016 | 2338 | zfcp_fsf_link_down_info_eval(fsf_req, 43, |
aef4a983 | 2339 | &qtcb->header.fsf_status_qual.link_down_info); |
1da177e4 | 2340 | break; |
1da177e4 LT |
2341 | } |
2342 | } | |
2343 | ||
2344 | ||
2345 | /* | |
2346 | * function: zfcp_fsf_open_port | |
2347 | * | |
41fa2ada | 2348 | * purpose: |
1da177e4 LT |
2349 | * |
2350 | * returns: address of initiated FSF request | |
41fa2ada | 2351 | * NULL - request could not be initiated |
1da177e4 LT |
2352 | */ |
2353 | int | |
2354 | zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) | |
2355 | { | |
2356 | volatile struct qdio_buffer_element *sbale; | |
2abbe866 | 2357 | struct zfcp_fsf_req *fsf_req; |
1da177e4 LT |
2358 | unsigned long lock_flags; |
2359 | int retval = 0; | |
2360 | ||
2361 | /* setup new FSF request */ | |
2362 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
2363 | FSF_QTCB_OPEN_PORT_WITH_DID, | |
2364 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
2365 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 2366 | &lock_flags, &fsf_req); |
1da177e4 LT |
2367 | if (retval < 0) { |
2368 | ZFCP_LOG_INFO("error: Could not create open port request " | |
2369 | "for port 0x%016Lx on adapter %s.\n", | |
2370 | erp_action->port->wwpn, | |
2371 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2372 | goto out; | |
2373 | } | |
2374 | ||
2abbe866 | 2375 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
2376 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
2377 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2378 | ||
2abbe866 | 2379 | fsf_req->qtcb->bottom.support.d_id = erp_action->port->d_id; |
1da177e4 | 2380 | atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->port->status); |
2abbe866 AH |
2381 | fsf_req->data = (unsigned long) erp_action->port; |
2382 | fsf_req->erp_action = erp_action; | |
2383 | erp_action->fsf_req = fsf_req; | |
1da177e4 | 2384 | |
2abbe866 AH |
2385 | zfcp_erp_start_timer(fsf_req); |
2386 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
2387 | if (retval) { |
2388 | ZFCP_LOG_INFO("error: Could not send open port request for " | |
2389 | "port 0x%016Lx on adapter %s.\n", | |
2390 | erp_action->port->wwpn, | |
2391 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2abbe866 | 2392 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
2393 | erp_action->fsf_req = NULL; |
2394 | goto out; | |
2395 | } | |
2396 | ||
2397 | ZFCP_LOG_DEBUG("open port request initiated " | |
2398 | "(adapter %s, port 0x%016Lx)\n", | |
2399 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2400 | erp_action->port->wwpn); | |
2401 | out: | |
2402 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
2403 | lock_flags); | |
2404 | return retval; | |
2405 | } | |
2406 | ||
2407 | /* | |
2408 | * function: zfcp_fsf_open_port_handler | |
2409 | * | |
2410 | * purpose: is called for finished Open Port command | |
2411 | * | |
41fa2ada | 2412 | * returns: |
1da177e4 LT |
2413 | */ |
2414 | static int | |
2415 | zfcp_fsf_open_port_handler(struct zfcp_fsf_req *fsf_req) | |
2416 | { | |
2417 | int retval = -EINVAL; | |
2418 | struct zfcp_port *port; | |
2419 | struct fsf_plogi *plogi; | |
2420 | struct fsf_qtcb_header *header; | |
2421 | u16 subtable, rule, counter; | |
2422 | ||
059c97d0 | 2423 | port = (struct zfcp_port *) fsf_req->data; |
1da177e4 LT |
2424 | header = &fsf_req->qtcb->header; |
2425 | ||
2426 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
2427 | /* don't change port status in our bookkeeping */ | |
2428 | goto skip_fsfstatus; | |
2429 | } | |
2430 | ||
2431 | /* evaluate FSF status in QTCB */ | |
2432 | switch (header->fsf_status) { | |
2433 | ||
2434 | case FSF_PORT_ALREADY_OPEN: | |
1da177e4 LT |
2435 | ZFCP_LOG_NORMAL("bug: remote port 0x%016Lx on adapter %s " |
2436 | "is already open.\n", | |
2437 | port->wwpn, zfcp_get_busid_by_port(port)); | |
1da177e4 LT |
2438 | /* |
2439 | * This is a bug, however operation should continue normally | |
2440 | * if it is simply ignored | |
2441 | */ | |
2442 | break; | |
2443 | ||
2444 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
2445 | ZFCP_LOG_NORMAL("Access denied, cannot open port 0x%016Lx " |
2446 | "on adapter %s\n", | |
2447 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2448 | for (counter = 0; counter < 2; counter++) { | |
2449 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
2450 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
2451 | switch (subtable) { | |
2452 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
2453 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
2454 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
2455 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
2456 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
2457 | zfcp_act_subtable_type[subtable], rule); | |
2458 | break; | |
2459 | } | |
2460 | } | |
698ec016 | 2461 | zfcp_erp_port_access_denied(port, 57, (u64)fsf_req); |
1da177e4 LT |
2462 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2463 | break; | |
2464 | ||
2465 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: | |
1da177e4 LT |
2466 | ZFCP_LOG_INFO("error: The FSF adapter is out of resources. " |
2467 | "The remote port 0x%016Lx on adapter %s " | |
2468 | "could not be opened. Disabling it.\n", | |
2469 | port->wwpn, zfcp_get_busid_by_port(port)); | |
698ec016 | 2470 | zfcp_erp_port_failed(port, 31, (u64)fsf_req); |
1da177e4 LT |
2471 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2472 | break; | |
2473 | ||
2474 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
2475 | switch (header->fsf_status_qual.word[0]) { |
2476 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
2477 | /* ERP strategy will escalate */ |
2478 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2479 | break; | |
2480 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
2481 | /* ERP strategy will escalate */ | |
1da177e4 LT |
2482 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2483 | break; | |
2484 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
1da177e4 LT |
2485 | ZFCP_LOG_NORMAL("The remote port 0x%016Lx on " |
2486 | "adapter %s could not be opened. " | |
2487 | "Disabling it.\n", | |
2488 | port->wwpn, | |
2489 | zfcp_get_busid_by_port(port)); | |
698ec016 | 2490 | zfcp_erp_port_failed(port, 32, (u64)fsf_req); |
1da177e4 LT |
2491 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2492 | break; | |
2493 | default: | |
2494 | ZFCP_LOG_NORMAL | |
2495 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
2496 | header->fsf_status_qual.word[0]); | |
1da177e4 LT |
2497 | break; |
2498 | } | |
2499 | break; | |
2500 | ||
2501 | case FSF_GOOD: | |
1da177e4 LT |
2502 | /* save port handle assigned by FSF */ |
2503 | port->handle = header->port_handle; | |
2504 | ZFCP_LOG_INFO("The remote port 0x%016Lx via adapter %s " | |
2505 | "was opened, it's port handle is 0x%x\n", | |
2506 | port->wwpn, zfcp_get_busid_by_port(port), | |
2507 | port->handle); | |
2508 | /* mark port as open */ | |
2509 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN | | |
2510 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
d736a27b AH |
2511 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
2512 | ZFCP_STATUS_COMMON_ACCESS_BOXED, | |
2513 | &port->status); | |
1da177e4 LT |
2514 | retval = 0; |
2515 | /* check whether D_ID has changed during open */ | |
2516 | /* | |
2517 | * FIXME: This check is not airtight, as the FCP channel does | |
2518 | * not monitor closures of target port connections caused on | |
2519 | * the remote side. Thus, they might miss out on invalidating | |
2520 | * locally cached WWPNs (and other N_Port parameters) of gone | |
2521 | * target ports. So, our heroic attempt to make things safe | |
2522 | * could be undermined by 'open port' response data tagged with | |
2523 | * obsolete WWPNs. Another reason to monitor potential | |
2524 | * connection closures ourself at least (by interpreting | |
2525 | * incoming ELS' and unsolicited status). It just crosses my | |
2526 | * mind that one should be able to cross-check by means of | |
2527 | * another GID_PN straight after a port has been opened. | |
2528 | * Alternately, an ADISC/PDISC ELS should suffice, as well. | |
2529 | */ | |
2530 | plogi = (struct fsf_plogi *) fsf_req->qtcb->bottom.support.els; | |
2531 | if (!atomic_test_mask(ZFCP_STATUS_PORT_NO_WWPN, &port->status)) | |
2532 | { | |
2533 | if (fsf_req->qtcb->bottom.support.els1_length < | |
75bfc283 | 2534 | sizeof (struct fsf_plogi)) { |
1da177e4 LT |
2535 | ZFCP_LOG_INFO( |
2536 | "warning: insufficient length of " | |
2537 | "PLOGI payload (%i)\n", | |
2538 | fsf_req->qtcb->bottom.support.els1_length); | |
1da177e4 LT |
2539 | /* skip sanity check and assume wwpn is ok */ |
2540 | } else { | |
2541 | if (plogi->serv_param.wwpn != port->wwpn) { | |
2542 | ZFCP_LOG_INFO("warning: d_id of port " | |
2543 | "0x%016Lx changed during " | |
2544 | "open\n", port->wwpn); | |
1da177e4 LT |
2545 | atomic_clear_mask( |
2546 | ZFCP_STATUS_PORT_DID_DID, | |
2547 | &port->status); | |
75bfc283 | 2548 | } else { |
1da177e4 | 2549 | port->wwnn = plogi->serv_param.wwnn; |
75bfc283 RW |
2550 | zfcp_plogi_evaluate(port, plogi); |
2551 | } | |
1da177e4 LT |
2552 | } |
2553 | } | |
2554 | break; | |
2555 | ||
2556 | case FSF_UNKNOWN_OP_SUBTYPE: | |
2557 | /* should never occure, subtype not set in zfcp_fsf_open_port */ | |
1da177e4 LT |
2558 | ZFCP_LOG_INFO("unknown operation subtype (adapter: %s, " |
2559 | "op_subtype=0x%x)\n", | |
2560 | zfcp_get_busid_by_port(port), | |
2561 | fsf_req->qtcb->bottom.support.operation_subtype); | |
2562 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2563 | break; | |
2564 | ||
2565 | default: | |
2566 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
2567 | "(debug info 0x%x)\n", | |
2568 | header->fsf_status); | |
1da177e4 LT |
2569 | break; |
2570 | } | |
2571 | ||
2572 | skip_fsfstatus: | |
2573 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &port->status); | |
2574 | return retval; | |
2575 | } | |
2576 | ||
2577 | /* | |
2578 | * function: zfcp_fsf_close_port | |
2579 | * | |
2580 | * purpose: submit FSF command "close port" | |
2581 | * | |
2582 | * returns: address of initiated FSF request | |
2583 | * NULL - request could not be initiated | |
2584 | */ | |
2585 | int | |
2586 | zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) | |
2587 | { | |
2588 | volatile struct qdio_buffer_element *sbale; | |
2abbe866 | 2589 | struct zfcp_fsf_req *fsf_req; |
1da177e4 LT |
2590 | unsigned long lock_flags; |
2591 | int retval = 0; | |
2592 | ||
2593 | /* setup new FSF request */ | |
2594 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
2595 | FSF_QTCB_CLOSE_PORT, | |
2596 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
2597 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 2598 | &lock_flags, &fsf_req); |
1da177e4 LT |
2599 | if (retval < 0) { |
2600 | ZFCP_LOG_INFO("error: Could not create a close port request " | |
2601 | "for port 0x%016Lx on adapter %s.\n", | |
2602 | erp_action->port->wwpn, | |
2603 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2604 | goto out; | |
2605 | } | |
2606 | ||
2abbe866 | 2607 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
2608 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
2609 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2610 | ||
2611 | atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->port->status); | |
2abbe866 AH |
2612 | fsf_req->data = (unsigned long) erp_action->port; |
2613 | fsf_req->erp_action = erp_action; | |
2614 | fsf_req->qtcb->header.port_handle = erp_action->port->handle; | |
2615 | fsf_req->erp_action = erp_action; | |
2616 | erp_action->fsf_req = fsf_req; | |
2617 | ||
2618 | zfcp_erp_start_timer(fsf_req); | |
2619 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
2620 | if (retval) { |
2621 | ZFCP_LOG_INFO("error: Could not send a close port request for " | |
2622 | "port 0x%016Lx on adapter %s.\n", | |
2623 | erp_action->port->wwpn, | |
2624 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2abbe866 | 2625 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
2626 | erp_action->fsf_req = NULL; |
2627 | goto out; | |
2628 | } | |
2629 | ||
2630 | ZFCP_LOG_TRACE("close port request initiated " | |
2631 | "(adapter %s, port 0x%016Lx)\n", | |
2632 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2633 | erp_action->port->wwpn); | |
2634 | out: | |
2635 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
2636 | lock_flags); | |
2637 | return retval; | |
2638 | } | |
2639 | ||
2640 | /* | |
2641 | * function: zfcp_fsf_close_port_handler | |
2642 | * | |
2643 | * purpose: is called for finished Close Port FSF command | |
2644 | * | |
2645 | * returns: | |
2646 | */ | |
2647 | static int | |
2648 | zfcp_fsf_close_port_handler(struct zfcp_fsf_req *fsf_req) | |
2649 | { | |
2650 | int retval = -EINVAL; | |
2651 | struct zfcp_port *port; | |
2652 | ||
059c97d0 | 2653 | port = (struct zfcp_port *) fsf_req->data; |
1da177e4 LT |
2654 | |
2655 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
2656 | /* don't change port status in our bookkeeping */ | |
2657 | goto skip_fsfstatus; | |
2658 | } | |
2659 | ||
2660 | /* evaluate FSF status in QTCB */ | |
2661 | switch (fsf_req->qtcb->header.fsf_status) { | |
2662 | ||
2663 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
2664 | ZFCP_LOG_INFO("Temporary port identifier 0x%x for port " |
2665 | "0x%016Lx on adapter %s invalid. This may happen " | |
2666 | "occasionally.\n", port->handle, | |
2667 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2668 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
2669 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
2670 | (char *) &fsf_req->qtcb->header.fsf_status_qual, | |
2671 | sizeof (union fsf_status_qual)); | |
9467a9b3 | 2672 | zfcp_erp_adapter_reopen(port->adapter, 0, 107, (u64)fsf_req); |
1da177e4 LT |
2673 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2674 | break; | |
2675 | ||
2676 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
2677 | /* Note: FSF has actually closed the port in this case. |
2678 | * The status code is just daft. Fingers crossed for a change | |
2679 | */ | |
2680 | retval = 0; | |
2681 | break; | |
2682 | ||
2683 | case FSF_GOOD: | |
1da177e4 LT |
2684 | ZFCP_LOG_TRACE("remote port 0x016%Lx on adapter %s closed, " |
2685 | "port handle 0x%x\n", port->wwpn, | |
2686 | zfcp_get_busid_by_port(port), port->handle); | |
698ec016 | 2687 | zfcp_erp_modify_port_status(port, 33, (u64)fsf_req, |
1da177e4 LT |
2688 | ZFCP_STATUS_COMMON_OPEN, |
2689 | ZFCP_CLEAR); | |
2690 | retval = 0; | |
2691 | break; | |
2692 | ||
2693 | default: | |
2694 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
2695 | "(debug info 0x%x)\n", | |
2696 | fsf_req->qtcb->header.fsf_status); | |
1da177e4 LT |
2697 | break; |
2698 | } | |
2699 | ||
2700 | skip_fsfstatus: | |
2701 | atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &port->status); | |
2702 | return retval; | |
2703 | } | |
2704 | ||
2705 | /* | |
2706 | * function: zfcp_fsf_close_physical_port | |
2707 | * | |
2708 | * purpose: submit FSF command "close physical port" | |
2709 | * | |
2710 | * returns: address of initiated FSF request | |
2711 | * NULL - request could not be initiated | |
2712 | */ | |
2713 | int | |
2714 | zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) | |
2715 | { | |
1da177e4 | 2716 | volatile struct qdio_buffer_element *sbale; |
2abbe866 AH |
2717 | struct zfcp_fsf_req *fsf_req; |
2718 | unsigned long lock_flags; | |
2719 | int retval = 0; | |
1da177e4 LT |
2720 | |
2721 | /* setup new FSF request */ | |
2722 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
2723 | FSF_QTCB_CLOSE_PHYSICAL_PORT, | |
2724 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
2725 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 2726 | &lock_flags, &fsf_req); |
1da177e4 LT |
2727 | if (retval < 0) { |
2728 | ZFCP_LOG_INFO("error: Could not create close physical port " | |
2729 | "request (adapter %s, port 0x%016Lx)\n", | |
2730 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2731 | erp_action->port->wwpn); | |
2732 | ||
2733 | goto out; | |
2734 | } | |
2735 | ||
2abbe866 | 2736 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
2737 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
2738 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2739 | ||
2740 | /* mark port as being closed */ | |
2741 | atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, | |
2742 | &erp_action->port->status); | |
2743 | /* save a pointer to this port */ | |
2abbe866 AH |
2744 | fsf_req->data = (unsigned long) erp_action->port; |
2745 | fsf_req->qtcb->header.port_handle = erp_action->port->handle; | |
2746 | fsf_req->erp_action = erp_action; | |
2747 | erp_action->fsf_req = fsf_req; | |
2748 | ||
2749 | zfcp_erp_start_timer(fsf_req); | |
2750 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
2751 | if (retval) { |
2752 | ZFCP_LOG_INFO("error: Could not send close physical port " | |
2753 | "request (adapter %s, port 0x%016Lx)\n", | |
2754 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2755 | erp_action->port->wwpn); | |
2abbe866 | 2756 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
2757 | erp_action->fsf_req = NULL; |
2758 | goto out; | |
2759 | } | |
2760 | ||
2761 | ZFCP_LOG_TRACE("close physical port request initiated " | |
2762 | "(adapter %s, port 0x%016Lx)\n", | |
2763 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2764 | erp_action->port->wwpn); | |
2765 | out: | |
2766 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
2767 | lock_flags); | |
2768 | return retval; | |
2769 | } | |
2770 | ||
2771 | /* | |
2772 | * function: zfcp_fsf_close_physical_port_handler | |
2773 | * | |
2774 | * purpose: is called for finished Close Physical Port FSF command | |
2775 | * | |
2776 | * returns: | |
2777 | */ | |
2778 | static int | |
2779 | zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *fsf_req) | |
2780 | { | |
2781 | int retval = -EINVAL; | |
2782 | struct zfcp_port *port; | |
2783 | struct zfcp_unit *unit; | |
2784 | struct fsf_qtcb_header *header; | |
2785 | u16 subtable, rule, counter; | |
2786 | ||
059c97d0 | 2787 | port = (struct zfcp_port *) fsf_req->data; |
1da177e4 LT |
2788 | header = &fsf_req->qtcb->header; |
2789 | ||
2790 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
2791 | /* don't change port status in our bookkeeping */ | |
2792 | goto skip_fsfstatus; | |
2793 | } | |
2794 | ||
2795 | /* evaluate FSF status in QTCB */ | |
2796 | switch (header->fsf_status) { | |
2797 | ||
2798 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
2799 | ZFCP_LOG_INFO("Temporary port identifier 0x%x invalid" |
2800 | "(adapter %s, port 0x%016Lx). " | |
2801 | "This may happen occasionally.\n", | |
2802 | port->handle, | |
2803 | zfcp_get_busid_by_port(port), | |
2804 | port->wwpn); | |
2805 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
2806 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
2807 | (char *) &header->fsf_status_qual, | |
2808 | sizeof (union fsf_status_qual)); | |
9467a9b3 | 2809 | zfcp_erp_adapter_reopen(port->adapter, 0, 108, (u64)fsf_req); |
1da177e4 LT |
2810 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2811 | break; | |
2812 | ||
2813 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
2814 | ZFCP_LOG_NORMAL("Access denied, cannot close " |
2815 | "physical port 0x%016Lx on adapter %s\n", | |
2816 | port->wwpn, zfcp_get_busid_by_port(port)); | |
2817 | for (counter = 0; counter < 2; counter++) { | |
2818 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
2819 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
2820 | switch (subtable) { | |
2821 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
2822 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
2823 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
2824 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
2825 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
2826 | zfcp_act_subtable_type[subtable], rule); | |
2827 | break; | |
2828 | } | |
2829 | } | |
698ec016 | 2830 | zfcp_erp_port_access_denied(port, 58, (u64)fsf_req); |
1da177e4 LT |
2831 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2832 | break; | |
2833 | ||
2834 | case FSF_PORT_BOXED: | |
1da177e4 LT |
2835 | ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter " |
2836 | "%s needs to be reopened but it was attempted " | |
2837 | "to close it physically.\n", | |
2838 | port->wwpn, | |
2839 | zfcp_get_busid_by_port(port)); | |
698ec016 | 2840 | zfcp_erp_port_boxed(port, 50, (u64)fsf_req); |
1da177e4 LT |
2841 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
2842 | ZFCP_STATUS_FSFREQ_RETRY; | |
5c815d15 CS |
2843 | |
2844 | /* can't use generic zfcp_erp_modify_port_status because | |
2845 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */ | |
2846 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
2847 | list_for_each_entry(unit, &port->unit_list_head, list) | |
2848 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, | |
2849 | &unit->status); | |
1da177e4 LT |
2850 | break; |
2851 | ||
2852 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
2853 | switch (header->fsf_status_qual.word[0]) { |
2854 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 LT |
2855 | /* This will now be escalated by ERP */ |
2856 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2857 | break; | |
2858 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 | 2859 | /* ERP strategy will escalate */ |
1da177e4 LT |
2860 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2861 | break; | |
2862 | default: | |
2863 | ZFCP_LOG_NORMAL | |
2864 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
2865 | header->fsf_status_qual.word[0]); | |
1da177e4 LT |
2866 | break; |
2867 | } | |
2868 | break; | |
2869 | ||
2870 | case FSF_GOOD: | |
1da177e4 LT |
2871 | ZFCP_LOG_DEBUG("Remote port 0x%016Lx via adapter %s " |
2872 | "physically closed, port handle 0x%x\n", | |
2873 | port->wwpn, | |
2874 | zfcp_get_busid_by_port(port), port->handle); | |
2875 | /* can't use generic zfcp_erp_modify_port_status because | |
2876 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port | |
2877 | */ | |
2878 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
2879 | list_for_each_entry(unit, &port->unit_list_head, list) | |
2880 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); | |
2881 | retval = 0; | |
2882 | break; | |
2883 | ||
2884 | default: | |
2885 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
2886 | "(debug info 0x%x)\n", | |
2887 | header->fsf_status); | |
1da177e4 LT |
2888 | break; |
2889 | } | |
2890 | ||
2891 | skip_fsfstatus: | |
2892 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, &port->status); | |
2893 | return retval; | |
2894 | } | |
2895 | ||
2896 | /* | |
2897 | * function: zfcp_fsf_open_unit | |
2898 | * | |
2899 | * purpose: | |
2900 | * | |
2901 | * returns: | |
2902 | * | |
2903 | * assumptions: This routine does not check whether the associated | |
2904 | * remote port has already been opened. This should be | |
2905 | * done by calling routines. Otherwise some status | |
2906 | * may be presented by FSF | |
2907 | */ | |
2908 | int | |
2909 | zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) | |
2910 | { | |
2911 | volatile struct qdio_buffer_element *sbale; | |
2abbe866 | 2912 | struct zfcp_fsf_req *fsf_req; |
1da177e4 LT |
2913 | unsigned long lock_flags; |
2914 | int retval = 0; | |
2915 | ||
2916 | /* setup new FSF request */ | |
2917 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
2918 | FSF_QTCB_OPEN_LUN, | |
2919 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
2920 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 2921 | &lock_flags, &fsf_req); |
1da177e4 LT |
2922 | if (retval < 0) { |
2923 | ZFCP_LOG_INFO("error: Could not create open unit request for " | |
2924 | "unit 0x%016Lx on port 0x%016Lx on adapter %s.\n", | |
2925 | erp_action->unit->fcp_lun, | |
2926 | erp_action->unit->port->wwpn, | |
2927 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2928 | goto out; | |
2929 | } | |
2930 | ||
2abbe866 | 2931 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
2932 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
2933 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
2934 | ||
2abbe866 AH |
2935 | fsf_req->qtcb->header.port_handle = erp_action->port->handle; |
2936 | fsf_req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun; | |
aef4a983 | 2937 | if (!(erp_action->adapter->connection_features & FSF_FEATURE_NPIV_MODE)) |
2abbe866 | 2938 | fsf_req->qtcb->bottom.support.option = |
06506d00 | 2939 | FSF_OPEN_LUN_SUPPRESS_BOXING; |
1da177e4 | 2940 | atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->unit->status); |
2abbe866 AH |
2941 | fsf_req->data = (unsigned long) erp_action->unit; |
2942 | fsf_req->erp_action = erp_action; | |
2943 | erp_action->fsf_req = fsf_req; | |
1da177e4 | 2944 | |
2abbe866 AH |
2945 | zfcp_erp_start_timer(fsf_req); |
2946 | retval = zfcp_fsf_req_send(erp_action->fsf_req); | |
1da177e4 LT |
2947 | if (retval) { |
2948 | ZFCP_LOG_INFO("error: Could not send an open unit request " | |
2949 | "on the adapter %s, port 0x%016Lx for " | |
2950 | "unit 0x%016Lx\n", | |
2951 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2952 | erp_action->port->wwpn, | |
2953 | erp_action->unit->fcp_lun); | |
2abbe866 | 2954 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
2955 | erp_action->fsf_req = NULL; |
2956 | goto out; | |
2957 | } | |
2958 | ||
2959 | ZFCP_LOG_TRACE("Open LUN request initiated (adapter %s, " | |
2960 | "port 0x%016Lx, unit 0x%016Lx)\n", | |
2961 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
2962 | erp_action->port->wwpn, erp_action->unit->fcp_lun); | |
2963 | out: | |
2964 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
2965 | lock_flags); | |
2966 | return retval; | |
2967 | } | |
2968 | ||
2969 | /* | |
2970 | * function: zfcp_fsf_open_unit_handler | |
2971 | * | |
2972 | * purpose: is called for finished Open LUN command | |
2973 | * | |
41fa2ada | 2974 | * returns: |
1da177e4 LT |
2975 | */ |
2976 | static int | |
2977 | zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *fsf_req) | |
2978 | { | |
2979 | int retval = -EINVAL; | |
2980 | struct zfcp_adapter *adapter; | |
2981 | struct zfcp_unit *unit; | |
2982 | struct fsf_qtcb_header *header; | |
2983 | struct fsf_qtcb_bottom_support *bottom; | |
2984 | struct fsf_queue_designator *queue_designator; | |
2985 | u16 subtable, rule, counter; | |
aef4a983 | 2986 | int exclusive, readwrite; |
1da177e4 | 2987 | |
059c97d0 | 2988 | unit = (struct zfcp_unit *) fsf_req->data; |
1da177e4 LT |
2989 | |
2990 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
2991 | /* don't change unit status in our bookkeeping */ | |
2992 | goto skip_fsfstatus; | |
2993 | } | |
2994 | ||
2995 | adapter = fsf_req->adapter; | |
2996 | header = &fsf_req->qtcb->header; | |
2997 | bottom = &fsf_req->qtcb->bottom.support; | |
2998 | queue_designator = &header->fsf_status_qual.fsf_queue_designator; | |
2999 | ||
1da177e4 | 3000 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
b64ddf96 | 3001 | ZFCP_STATUS_COMMON_ACCESS_BOXED | |
1da177e4 LT |
3002 | ZFCP_STATUS_UNIT_SHARED | |
3003 | ZFCP_STATUS_UNIT_READONLY, | |
3004 | &unit->status); | |
3005 | ||
3006 | /* evaluate FSF status in QTCB */ | |
3007 | switch (header->fsf_status) { | |
3008 | ||
3009 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
3010 | ZFCP_LOG_INFO("Temporary port identifier 0x%x " |
3011 | "for port 0x%016Lx on adapter %s invalid " | |
3012 | "This may happen occasionally\n", | |
3013 | unit->port->handle, | |
3014 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3015 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
3016 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3017 | (char *) &header->fsf_status_qual, | |
3018 | sizeof (union fsf_status_qual)); | |
9467a9b3 MP |
3019 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 109, |
3020 | (u64)fsf_req); | |
1da177e4 LT |
3021 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3022 | break; | |
3023 | ||
3024 | case FSF_LUN_ALREADY_OPEN: | |
1da177e4 LT |
3025 | ZFCP_LOG_NORMAL("bug: Attempted to open unit 0x%016Lx on " |
3026 | "remote port 0x%016Lx on adapter %s twice.\n", | |
3027 | unit->fcp_lun, | |
3028 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
1da177e4 LT |
3029 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3030 | break; | |
3031 | ||
3032 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
3033 | ZFCP_LOG_NORMAL("Access denied, cannot open unit 0x%016Lx on " |
3034 | "remote port 0x%016Lx on adapter %s\n", | |
3035 | unit->fcp_lun, unit->port->wwpn, | |
3036 | zfcp_get_busid_by_unit(unit)); | |
3037 | for (counter = 0; counter < 2; counter++) { | |
3038 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
3039 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
3040 | switch (subtable) { | |
3041 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
3042 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
3043 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
3044 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
3045 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
3046 | zfcp_act_subtable_type[subtable], rule); | |
3047 | break; | |
3048 | } | |
3049 | } | |
698ec016 | 3050 | zfcp_erp_unit_access_denied(unit, 59, (u64)fsf_req); |
1da177e4 LT |
3051 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
3052 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); | |
3053 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3054 | break; | |
3055 | ||
3056 | case FSF_PORT_BOXED: | |
1da177e4 LT |
3057 | ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s " |
3058 | "needs to be reopened\n", | |
3059 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
698ec016 | 3060 | zfcp_erp_port_boxed(unit->port, 51, (u64)fsf_req); |
1da177e4 LT |
3061 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
3062 | ZFCP_STATUS_FSFREQ_RETRY; | |
3063 | break; | |
3064 | ||
3065 | case FSF_LUN_SHARING_VIOLATION: | |
1da177e4 LT |
3066 | if (header->fsf_status_qual.word[0] != 0) { |
3067 | ZFCP_LOG_NORMAL("FCP-LUN 0x%Lx at the remote port " | |
3068 | "with WWPN 0x%Lx " | |
3069 | "connected to the adapter %s " | |
3070 | "is already in use in LPAR%d, CSS%d\n", | |
3071 | unit->fcp_lun, | |
3072 | unit->port->wwpn, | |
3073 | zfcp_get_busid_by_unit(unit), | |
3074 | queue_designator->hla, | |
3075 | queue_designator->cssid); | |
3076 | } else { | |
3077 | subtable = header->fsf_status_qual.halfword[4]; | |
3078 | rule = header->fsf_status_qual.halfword[5]; | |
3079 | switch (subtable) { | |
3080 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
3081 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
3082 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
3083 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
3084 | ZFCP_LOG_NORMAL("Access to FCP-LUN 0x%Lx at the " | |
3085 | "remote port with WWPN 0x%Lx " | |
3086 | "connected to the adapter %s " | |
3087 | "is denied (%s rule %d)\n", | |
3088 | unit->fcp_lun, | |
3089 | unit->port->wwpn, | |
3090 | zfcp_get_busid_by_unit(unit), | |
3091 | zfcp_act_subtable_type[subtable], | |
3092 | rule); | |
3093 | break; | |
3094 | } | |
3095 | } | |
3096 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
3097 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3098 | (char *) &header->fsf_status_qual, | |
3099 | sizeof (union fsf_status_qual)); | |
698ec016 | 3100 | zfcp_erp_unit_access_denied(unit, 60, (u64)fsf_req); |
1da177e4 LT |
3101 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
3102 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); | |
3103 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3104 | break; | |
3105 | ||
3106 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: | |
1da177e4 LT |
3107 | ZFCP_LOG_INFO("error: The adapter ran out of resources. " |
3108 | "There is no handle (temporary port identifier) " | |
3109 | "available for unit 0x%016Lx on port 0x%016Lx " | |
3110 | "on adapter %s\n", | |
3111 | unit->fcp_lun, | |
3112 | unit->port->wwpn, | |
3113 | zfcp_get_busid_by_unit(unit)); | |
698ec016 | 3114 | zfcp_erp_unit_failed(unit, 34, (u64)fsf_req); |
1da177e4 LT |
3115 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3116 | break; | |
3117 | ||
3118 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
3119 | switch (header->fsf_status_qual.word[0]) { |
3120 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 3121 | /* Re-establish link to port */ |
65a8d4e1 | 3122 | zfcp_test_link(unit->port); |
1da177e4 LT |
3123 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3124 | break; | |
3125 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 | 3126 | /* ERP strategy will escalate */ |
1da177e4 LT |
3127 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3128 | break; | |
3129 | default: | |
3130 | ZFCP_LOG_NORMAL | |
3131 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
3132 | header->fsf_status_qual.word[0]); | |
1da177e4 LT |
3133 | } |
3134 | break; | |
3135 | ||
3136 | case FSF_INVALID_COMMAND_OPTION: | |
1da177e4 LT |
3137 | ZFCP_LOG_NORMAL( |
3138 | "Invalid option 0x%x has been specified " | |
3139 | "in QTCB bottom sent to the adapter %s\n", | |
3140 | bottom->option, | |
3141 | zfcp_get_busid_by_adapter(adapter)); | |
3142 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
3143 | retval = -EINVAL; | |
3144 | break; | |
3145 | ||
3146 | case FSF_GOOD: | |
1da177e4 LT |
3147 | /* save LUN handle assigned by FSF */ |
3148 | unit->handle = header->lun_handle; | |
3149 | ZFCP_LOG_TRACE("unit 0x%016Lx on remote port 0x%016Lx on " | |
3150 | "adapter %s opened, port handle 0x%x\n", | |
3151 | unit->fcp_lun, | |
3152 | unit->port->wwpn, | |
3153 | zfcp_get_busid_by_unit(unit), | |
3154 | unit->handle); | |
3155 | /* mark unit as open */ | |
3156 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); | |
aef4a983 MS |
3157 | |
3158 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) && | |
3159 | (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) && | |
3160 | (adapter->ccw_device->id.dev_model != ZFCP_DEVICE_MODEL_PRIV)) { | |
3161 | exclusive = (bottom->lun_access_info & | |
3162 | FSF_UNIT_ACCESS_EXCLUSIVE); | |
3163 | readwrite = (bottom->lun_access_info & | |
3164 | FSF_UNIT_ACCESS_OUTBOUND_TRANSFER); | |
3165 | ||
1da177e4 LT |
3166 | if (!exclusive) |
3167 | atomic_set_mask(ZFCP_STATUS_UNIT_SHARED, | |
3168 | &unit->status); | |
3169 | ||
3170 | if (!readwrite) { | |
3171 | atomic_set_mask(ZFCP_STATUS_UNIT_READONLY, | |
3172 | &unit->status); | |
3173 | ZFCP_LOG_NORMAL("read-only access for unit " | |
3174 | "(adapter %s, wwpn=0x%016Lx, " | |
3175 | "fcp_lun=0x%016Lx)\n", | |
3176 | zfcp_get_busid_by_unit(unit), | |
3177 | unit->port->wwpn, | |
3178 | unit->fcp_lun); | |
3179 | } | |
3180 | ||
3181 | if (exclusive && !readwrite) { | |
3182 | ZFCP_LOG_NORMAL("exclusive access of read-only " | |
3183 | "unit not supported\n"); | |
698ec016 | 3184 | zfcp_erp_unit_failed(unit, 35, (u64)fsf_req); |
1da177e4 | 3185 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
9467a9b3 MP |
3186 | zfcp_erp_unit_shutdown(unit, 0, 80, |
3187 | (u64)fsf_req); | |
1da177e4 LT |
3188 | } else if (!exclusive && readwrite) { |
3189 | ZFCP_LOG_NORMAL("shared access of read-write " | |
3190 | "unit not supported\n"); | |
698ec016 | 3191 | zfcp_erp_unit_failed(unit, 36, (u64)fsf_req); |
1da177e4 | 3192 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
9467a9b3 MP |
3193 | zfcp_erp_unit_shutdown(unit, 0, 81, |
3194 | (u64)fsf_req); | |
1da177e4 LT |
3195 | } |
3196 | } | |
3197 | ||
3198 | retval = 0; | |
3199 | break; | |
3200 | ||
3201 | default: | |
3202 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
3203 | "(debug info 0x%x)\n", | |
3204 | header->fsf_status); | |
1da177e4 LT |
3205 | break; |
3206 | } | |
3207 | ||
3208 | skip_fsfstatus: | |
3209 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &unit->status); | |
3210 | return retval; | |
3211 | } | |
3212 | ||
3213 | /* | |
3214 | * function: zfcp_fsf_close_unit | |
3215 | * | |
3216 | * purpose: | |
3217 | * | |
3218 | * returns: address of fsf_req - request successfully initiated | |
41fa2ada | 3219 | * NULL - |
1da177e4 LT |
3220 | * |
3221 | * assumptions: This routine does not check whether the associated | |
3222 | * remote port/lun has already been opened. This should be | |
3223 | * done by calling routines. Otherwise some status | |
3224 | * may be presented by FSF | |
3225 | */ | |
3226 | int | |
3227 | zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) | |
3228 | { | |
3229 | volatile struct qdio_buffer_element *sbale; | |
2abbe866 | 3230 | struct zfcp_fsf_req *fsf_req; |
1da177e4 LT |
3231 | unsigned long lock_flags; |
3232 | int retval = 0; | |
3233 | ||
3234 | /* setup new FSF request */ | |
3235 | retval = zfcp_fsf_req_create(erp_action->adapter, | |
3236 | FSF_QTCB_CLOSE_LUN, | |
3237 | ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP, | |
3238 | erp_action->adapter->pool.fsf_req_erp, | |
2abbe866 | 3239 | &lock_flags, &fsf_req); |
1da177e4 LT |
3240 | if (retval < 0) { |
3241 | ZFCP_LOG_INFO("error: Could not create close unit request for " | |
3242 | "unit 0x%016Lx on port 0x%016Lx on adapter %s.\n", | |
3243 | erp_action->unit->fcp_lun, | |
3244 | erp_action->port->wwpn, | |
3245 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
3246 | goto out; | |
3247 | } | |
3248 | ||
2abbe866 | 3249 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); |
1da177e4 LT |
3250 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
3251 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
3252 | ||
2abbe866 AH |
3253 | fsf_req->qtcb->header.port_handle = erp_action->port->handle; |
3254 | fsf_req->qtcb->header.lun_handle = erp_action->unit->handle; | |
1da177e4 | 3255 | atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->unit->status); |
2abbe866 AH |
3256 | fsf_req->data = (unsigned long) erp_action->unit; |
3257 | fsf_req->erp_action = erp_action; | |
3258 | erp_action->fsf_req = fsf_req; | |
1da177e4 | 3259 | |
2abbe866 AH |
3260 | zfcp_erp_start_timer(fsf_req); |
3261 | retval = zfcp_fsf_req_send(erp_action->fsf_req); | |
1da177e4 LT |
3262 | if (retval) { |
3263 | ZFCP_LOG_INFO("error: Could not send a close unit request for " | |
3264 | "unit 0x%016Lx on port 0x%016Lx onadapter %s.\n", | |
3265 | erp_action->unit->fcp_lun, | |
3266 | erp_action->port->wwpn, | |
3267 | zfcp_get_busid_by_adapter(erp_action->adapter)); | |
2abbe866 | 3268 | zfcp_fsf_req_free(fsf_req); |
1da177e4 LT |
3269 | erp_action->fsf_req = NULL; |
3270 | goto out; | |
3271 | } | |
3272 | ||
3273 | ZFCP_LOG_TRACE("Close LUN request initiated (adapter %s, " | |
3274 | "port 0x%016Lx, unit 0x%016Lx)\n", | |
3275 | zfcp_get_busid_by_adapter(erp_action->adapter), | |
3276 | erp_action->port->wwpn, erp_action->unit->fcp_lun); | |
3277 | out: | |
3278 | write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock, | |
3279 | lock_flags); | |
3280 | return retval; | |
3281 | } | |
3282 | ||
3283 | /* | |
3284 | * function: zfcp_fsf_close_unit_handler | |
3285 | * | |
3286 | * purpose: is called for finished Close LUN FSF command | |
3287 | * | |
3288 | * returns: | |
3289 | */ | |
3290 | static int | |
3291 | zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *fsf_req) | |
3292 | { | |
3293 | int retval = -EINVAL; | |
3294 | struct zfcp_unit *unit; | |
3295 | ||
059c97d0 | 3296 | unit = (struct zfcp_unit *) fsf_req->data; |
1da177e4 LT |
3297 | |
3298 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
3299 | /* don't change unit status in our bookkeeping */ | |
3300 | goto skip_fsfstatus; | |
3301 | } | |
3302 | ||
3303 | /* evaluate FSF status in QTCB */ | |
3304 | switch (fsf_req->qtcb->header.fsf_status) { | |
3305 | ||
3306 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
3307 | ZFCP_LOG_INFO("Temporary port identifier 0x%x for port " |
3308 | "0x%016Lx on adapter %s invalid. This may " | |
3309 | "happen in rare circumstances\n", | |
3310 | unit->port->handle, | |
3311 | unit->port->wwpn, | |
3312 | zfcp_get_busid_by_unit(unit)); | |
3313 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
3314 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3315 | (char *) &fsf_req->qtcb->header.fsf_status_qual, | |
3316 | sizeof (union fsf_status_qual)); | |
9467a9b3 MP |
3317 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 110, |
3318 | (u64)fsf_req); | |
1da177e4 LT |
3319 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3320 | break; | |
3321 | ||
3322 | case FSF_LUN_HANDLE_NOT_VALID: | |
1da177e4 LT |
3323 | ZFCP_LOG_INFO("Temporary LUN identifier 0x%x of unit " |
3324 | "0x%016Lx on port 0x%016Lx on adapter %s is " | |
3325 | "invalid. This may happen occasionally.\n", | |
3326 | unit->handle, | |
3327 | unit->fcp_lun, | |
3328 | unit->port->wwpn, | |
3329 | zfcp_get_busid_by_unit(unit)); | |
3330 | ZFCP_LOG_DEBUG("Status qualifier data:\n"); | |
3331 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3332 | (char *) &fsf_req->qtcb->header.fsf_status_qual, | |
3333 | sizeof (union fsf_status_qual)); | |
9467a9b3 | 3334 | zfcp_erp_port_reopen(unit->port, 0, 111, (u64)fsf_req); |
1da177e4 LT |
3335 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3336 | break; | |
3337 | ||
3338 | case FSF_PORT_BOXED: | |
1da177e4 LT |
3339 | ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s " |
3340 | "needs to be reopened\n", | |
3341 | unit->port->wwpn, | |
3342 | zfcp_get_busid_by_unit(unit)); | |
698ec016 | 3343 | zfcp_erp_port_boxed(unit->port, 52, (u64)fsf_req); |
1da177e4 LT |
3344 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
3345 | ZFCP_STATUS_FSFREQ_RETRY; | |
3346 | break; | |
3347 | ||
3348 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
3349 | switch (fsf_req->qtcb->header.fsf_status_qual.word[0]) { |
3350 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 3351 | /* re-establish link to port */ |
65a8d4e1 | 3352 | zfcp_test_link(unit->port); |
1da177e4 LT |
3353 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3354 | break; | |
3355 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 | 3356 | /* ERP strategy will escalate */ |
1da177e4 LT |
3357 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3358 | break; | |
3359 | default: | |
3360 | ZFCP_LOG_NORMAL | |
3361 | ("bug: Wrong status qualifier 0x%x arrived.\n", | |
3362 | fsf_req->qtcb->header.fsf_status_qual.word[0]); | |
1da177e4 LT |
3363 | break; |
3364 | } | |
3365 | break; | |
3366 | ||
3367 | case FSF_GOOD: | |
1da177e4 LT |
3368 | ZFCP_LOG_TRACE("unit 0x%016Lx on port 0x%016Lx on adapter %s " |
3369 | "closed, port handle 0x%x\n", | |
3370 | unit->fcp_lun, | |
3371 | unit->port->wwpn, | |
3372 | zfcp_get_busid_by_unit(unit), | |
3373 | unit->handle); | |
3374 | /* mark unit as closed */ | |
3375 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); | |
3376 | retval = 0; | |
3377 | break; | |
3378 | ||
3379 | default: | |
3380 | ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented " | |
3381 | "(debug info 0x%x)\n", | |
3382 | fsf_req->qtcb->header.fsf_status); | |
1da177e4 LT |
3383 | break; |
3384 | } | |
3385 | ||
3386 | skip_fsfstatus: | |
3387 | atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &unit->status); | |
3388 | return retval; | |
3389 | } | |
3390 | ||
3391 | /** | |
3392 | * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command) | |
3393 | * @adapter: adapter where scsi command is issued | |
3394 | * @unit: unit where command is sent to | |
3395 | * @scsi_cmnd: scsi command to be sent | |
3396 | * @timer: timer to be started when request is initiated | |
3397 | * @req_flags: flags for fsf_request | |
3398 | */ | |
3399 | int | |
3400 | zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter, | |
3401 | struct zfcp_unit *unit, | |
3402 | struct scsi_cmnd * scsi_cmnd, | |
2abbe866 | 3403 | int use_timer, int req_flags) |
1da177e4 LT |
3404 | { |
3405 | struct zfcp_fsf_req *fsf_req = NULL; | |
3406 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
3407 | unsigned int sbtype; | |
3408 | unsigned long lock_flags; | |
3409 | int real_bytes = 0; | |
3410 | int retval = 0; | |
3411 | int mask; | |
3412 | ||
3413 | /* setup new FSF request */ | |
3414 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, | |
3415 | adapter->pool.fsf_req_scsi, | |
3416 | &lock_flags, &fsf_req); | |
3417 | if (unlikely(retval < 0)) { | |
3418 | ZFCP_LOG_DEBUG("error: Could not create FCP command request " | |
3419 | "for unit 0x%016Lx on port 0x%016Lx on " | |
3420 | "adapter %s\n", | |
3421 | unit->fcp_lun, | |
3422 | unit->port->wwpn, | |
3423 | zfcp_get_busid_by_adapter(adapter)); | |
3424 | goto failed_req_create; | |
3425 | } | |
3426 | ||
ba172420 CS |
3427 | if (unlikely(!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED, |
3428 | &unit->status))) { | |
3429 | retval = -EBUSY; | |
3430 | goto unit_blocked; | |
3431 | } | |
3432 | ||
059c97d0 AH |
3433 | zfcp_unit_get(unit); |
3434 | fsf_req->unit = unit; | |
1da177e4 | 3435 | |
059c97d0 | 3436 | /* associate FSF request with SCSI request (for look up on abort) */ |
4eff4a36 | 3437 | scsi_cmnd->host_scribble = (unsigned char *) fsf_req->req_id; |
059c97d0 AH |
3438 | |
3439 | /* associate SCSI command with FSF request */ | |
3440 | fsf_req->data = (unsigned long) scsi_cmnd; | |
1da177e4 LT |
3441 | |
3442 | /* set handles of unit and its parent port in QTCB */ | |
3443 | fsf_req->qtcb->header.lun_handle = unit->handle; | |
3444 | fsf_req->qtcb->header.port_handle = unit->port->handle; | |
3445 | ||
3446 | /* FSF does not define the structure of the FCP_CMND IU */ | |
3447 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) | |
3448 | &(fsf_req->qtcb->bottom.io.fcp_cmnd); | |
3449 | ||
3450 | /* | |
3451 | * set depending on data direction: | |
3452 | * data direction bits in SBALE (SB Type) | |
3453 | * data direction bits in QTCB | |
3454 | * data direction bits in FCP_CMND IU | |
3455 | */ | |
3456 | switch (scsi_cmnd->sc_data_direction) { | |
3457 | case DMA_NONE: | |
1da177e4 LT |
3458 | fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; |
3459 | /* | |
3460 | * FIXME(qdio): | |
3461 | * what is the correct type for commands | |
3462 | * without 'real' data buffers? | |
3463 | */ | |
3464 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
3465 | break; | |
3466 | case DMA_FROM_DEVICE: | |
1da177e4 LT |
3467 | fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ; |
3468 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
3469 | fcp_cmnd_iu->rddata = 1; | |
3470 | break; | |
3471 | case DMA_TO_DEVICE: | |
1da177e4 LT |
3472 | fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE; |
3473 | sbtype = SBAL_FLAGS0_TYPE_WRITE; | |
3474 | fcp_cmnd_iu->wddata = 1; | |
3475 | break; | |
3476 | case DMA_BIDIRECTIONAL: | |
1da177e4 LT |
3477 | default: |
3478 | /* | |
3479 | * dummy, catch this condition earlier | |
3480 | * in zfcp_scsi_queuecommand | |
3481 | */ | |
3482 | goto failed_scsi_cmnd; | |
3483 | } | |
3484 | ||
3485 | /* set FC service class in QTCB (3 per default) */ | |
06506d00 | 3486 | fsf_req->qtcb->bottom.io.service_class = ZFCP_FC_SERVICE_CLASS_DEFAULT; |
1da177e4 LT |
3487 | |
3488 | /* set FCP_LUN in FCP_CMND IU in QTCB */ | |
3489 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
3490 | ||
3491 | mask = ZFCP_STATUS_UNIT_READONLY | ZFCP_STATUS_UNIT_SHARED; | |
3492 | ||
3493 | /* set task attributes in FCP_CMND IU in QTCB */ | |
3494 | if (likely((scsi_cmnd->device->simple_tags) || | |
3495 | (atomic_test_mask(mask, &unit->status)))) | |
3496 | fcp_cmnd_iu->task_attribute = SIMPLE_Q; | |
3497 | else | |
3498 | fcp_cmnd_iu->task_attribute = UNTAGGED; | |
3499 | ||
3500 | /* set additional length of FCP_CDB in FCP_CMND IU in QTCB, if needed */ | |
3501 | if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH)) { | |
3502 | fcp_cmnd_iu->add_fcp_cdb_length | |
3503 | = (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2; | |
3504 | ZFCP_LOG_TRACE("SCSI CDB length is 0x%x, " | |
3505 | "additional FCP_CDB length is 0x%x " | |
3506 | "(shifted right 2 bits)\n", | |
3507 | scsi_cmnd->cmd_len, | |
3508 | fcp_cmnd_iu->add_fcp_cdb_length); | |
3509 | } | |
3510 | /* | |
3511 | * copy SCSI CDB (including additional length, if any) to | |
3512 | * FCP_CDB in FCP_CMND IU in QTCB | |
3513 | */ | |
3514 | memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); | |
3515 | ||
3516 | /* FCP CMND IU length in QTCB */ | |
3517 | fsf_req->qtcb->bottom.io.fcp_cmnd_length = | |
3518 | sizeof (struct fcp_cmnd_iu) + | |
3519 | fcp_cmnd_iu->add_fcp_cdb_length + sizeof (fcp_dl_t); | |
3520 | ||
3521 | /* generate SBALEs from data buffer */ | |
3522 | real_bytes = zfcp_qdio_sbals_from_scsicmnd(fsf_req, sbtype, scsi_cmnd); | |
3523 | if (unlikely(real_bytes < 0)) { | |
3524 | if (fsf_req->sbal_number < ZFCP_MAX_SBALS_PER_REQ) { | |
3525 | ZFCP_LOG_DEBUG( | |
3526 | "Data did not fit into available buffer(s), " | |
3527 | "waiting for more...\n"); | |
2282f658 CS |
3528 | retval = -EIO; |
3529 | } else { | |
3530 | ZFCP_LOG_NORMAL("error: No truncation implemented but " | |
3531 | "required. Shutting down unit " | |
3532 | "(adapter %s, port 0x%016Lx, " | |
3533 | "unit 0x%016Lx)\n", | |
3534 | zfcp_get_busid_by_unit(unit), | |
3535 | unit->port->wwpn, | |
3536 | unit->fcp_lun); | |
9467a9b3 | 3537 | zfcp_erp_unit_shutdown(unit, 0, 131, (u64)fsf_req); |
2282f658 | 3538 | retval = -EINVAL; |
1da177e4 LT |
3539 | } |
3540 | goto no_fit; | |
3541 | } | |
3542 | ||
3543 | /* set length of FCP data length in FCP_CMND IU in QTCB */ | |
3544 | zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes); | |
3545 | ||
3546 | ZFCP_LOG_DEBUG("Sending SCSI command:\n"); | |
3547 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3548 | (char *) scsi_cmnd->cmnd, scsi_cmnd->cmd_len); | |
3549 | ||
2abbe866 AH |
3550 | if (use_timer) |
3551 | zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); | |
3552 | ||
3553 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
3554 | if (unlikely(retval < 0)) { |
3555 | ZFCP_LOG_INFO("error: Could not send FCP command request " | |
3556 | "on adapter %s, port 0x%016Lx, unit 0x%016Lx\n", | |
3557 | zfcp_get_busid_by_adapter(adapter), | |
3558 | unit->port->wwpn, | |
3559 | unit->fcp_lun); | |
3560 | goto send_failed; | |
3561 | } | |
3562 | ||
3563 | ZFCP_LOG_TRACE("Send FCP Command initiated (adapter %s, " | |
3564 | "port 0x%016Lx, unit 0x%016Lx)\n", | |
3565 | zfcp_get_busid_by_adapter(adapter), | |
3566 | unit->port->wwpn, | |
3567 | unit->fcp_lun); | |
3568 | goto success; | |
3569 | ||
3570 | send_failed: | |
3571 | no_fit: | |
3572 | failed_scsi_cmnd: | |
ba172420 | 3573 | unit_blocked: |
059c97d0 | 3574 | zfcp_unit_put(unit); |
1da177e4 LT |
3575 | zfcp_fsf_req_free(fsf_req); |
3576 | fsf_req = NULL; | |
3577 | scsi_cmnd->host_scribble = NULL; | |
3578 | success: | |
3579 | failed_req_create: | |
3580 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
3581 | return retval; | |
3582 | } | |
3583 | ||
1da177e4 LT |
3584 | struct zfcp_fsf_req * |
3585 | zfcp_fsf_send_fcp_command_task_management(struct zfcp_adapter *adapter, | |
3586 | struct zfcp_unit *unit, | |
3587 | u8 tm_flags, int req_flags) | |
3588 | { | |
3589 | struct zfcp_fsf_req *fsf_req = NULL; | |
3590 | int retval = 0; | |
3591 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
3592 | unsigned long lock_flags; | |
3593 | volatile struct qdio_buffer_element *sbale; | |
3594 | ||
3595 | /* setup new FSF request */ | |
3596 | retval = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, | |
3597 | adapter->pool.fsf_req_scsi, | |
3598 | &lock_flags, &fsf_req); | |
3599 | if (retval < 0) { | |
3600 | ZFCP_LOG_INFO("error: Could not create FCP command (task " | |
3601 | "management) request for adapter %s, port " | |
3602 | " 0x%016Lx, unit 0x%016Lx.\n", | |
3603 | zfcp_get_busid_by_adapter(adapter), | |
3604 | unit->port->wwpn, unit->fcp_lun); | |
3605 | goto out; | |
3606 | } | |
3607 | ||
fdf23452 CS |
3608 | if (unlikely(!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED, |
3609 | &unit->status))) | |
3610 | goto unit_blocked; | |
3611 | ||
1da177e4 LT |
3612 | /* |
3613 | * Used to decide on proper handler in the return path, | |
3614 | * could be either zfcp_fsf_send_fcp_command_task_handler or | |
3615 | * zfcp_fsf_send_fcp_command_task_management_handler */ | |
3616 | ||
3617 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT; | |
3618 | ||
3619 | /* | |
3620 | * hold a pointer to the unit being target of this | |
3621 | * task management request | |
3622 | */ | |
059c97d0 | 3623 | fsf_req->data = (unsigned long) unit; |
1da177e4 LT |
3624 | |
3625 | /* set FSF related fields in QTCB */ | |
3626 | fsf_req->qtcb->header.lun_handle = unit->handle; | |
3627 | fsf_req->qtcb->header.port_handle = unit->port->handle; | |
3628 | fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
06506d00 | 3629 | fsf_req->qtcb->bottom.io.service_class = ZFCP_FC_SERVICE_CLASS_DEFAULT; |
1da177e4 LT |
3630 | fsf_req->qtcb->bottom.io.fcp_cmnd_length = |
3631 | sizeof (struct fcp_cmnd_iu) + sizeof (fcp_dl_t); | |
3632 | ||
3633 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
3634 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE; | |
3635 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
3636 | ||
3637 | /* set FCP related fields in FCP_CMND IU in QTCB */ | |
3638 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) | |
3639 | &(fsf_req->qtcb->bottom.io.fcp_cmnd); | |
3640 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
3641 | fcp_cmnd_iu->task_management_flags = tm_flags; | |
3642 | ||
2abbe866 AH |
3643 | zfcp_fsf_start_timer(fsf_req, ZFCP_SCSI_ER_TIMEOUT); |
3644 | retval = zfcp_fsf_req_send(fsf_req); | |
fdf23452 | 3645 | if (!retval) |
1da177e4 | 3646 | goto out; |
1da177e4 | 3647 | |
fdf23452 CS |
3648 | unit_blocked: |
3649 | zfcp_fsf_req_free(fsf_req); | |
3650 | fsf_req = NULL; | |
3651 | ||
1da177e4 LT |
3652 | out: |
3653 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
3654 | return fsf_req; | |
3655 | } | |
3656 | ||
3657 | /* | |
3658 | * function: zfcp_fsf_send_fcp_command_handler | |
3659 | * | |
3660 | * purpose: is called for finished Send FCP Command | |
3661 | * | |
41fa2ada | 3662 | * returns: |
1da177e4 LT |
3663 | */ |
3664 | static int | |
3665 | zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *fsf_req) | |
3666 | { | |
3667 | int retval = -EINVAL; | |
3668 | struct zfcp_unit *unit; | |
3669 | struct fsf_qtcb_header *header; | |
3670 | u16 subtable, rule, counter; | |
3671 | ||
3672 | header = &fsf_req->qtcb->header; | |
3673 | ||
3674 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)) | |
059c97d0 | 3675 | unit = (struct zfcp_unit *) fsf_req->data; |
1da177e4 | 3676 | else |
059c97d0 | 3677 | unit = fsf_req->unit; |
1da177e4 LT |
3678 | |
3679 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
3680 | /* go directly to calls of special handlers */ | |
3681 | goto skip_fsfstatus; | |
3682 | } | |
3683 | ||
3684 | /* evaluate FSF status in QTCB */ | |
3685 | switch (header->fsf_status) { | |
3686 | ||
3687 | case FSF_PORT_HANDLE_NOT_VALID: | |
1da177e4 LT |
3688 | ZFCP_LOG_INFO("Temporary port identifier 0x%x for port " |
3689 | "0x%016Lx on adapter %s invalid\n", | |
3690 | unit->port->handle, | |
3691 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
3692 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3693 | (char *) &header->fsf_status_qual, | |
3694 | sizeof (union fsf_status_qual)); | |
9467a9b3 MP |
3695 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 112, |
3696 | (u64)fsf_req); | |
1da177e4 LT |
3697 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3698 | break; | |
3699 | ||
3700 | case FSF_LUN_HANDLE_NOT_VALID: | |
1da177e4 LT |
3701 | ZFCP_LOG_INFO("Temporary LUN identifier 0x%x for unit " |
3702 | "0x%016Lx on port 0x%016Lx on adapter %s is " | |
3703 | "invalid. This may happen occasionally.\n", | |
3704 | unit->handle, | |
3705 | unit->fcp_lun, | |
3706 | unit->port->wwpn, | |
3707 | zfcp_get_busid_by_unit(unit)); | |
3708 | ZFCP_LOG_NORMAL("Status qualifier data:\n"); | |
3709 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL, | |
3710 | (char *) &header->fsf_status_qual, | |
3711 | sizeof (union fsf_status_qual)); | |
9467a9b3 | 3712 | zfcp_erp_port_reopen(unit->port, 0, 113, (u64)fsf_req); |
1da177e4 LT |
3713 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3714 | break; | |
3715 | ||
3716 | case FSF_HANDLE_MISMATCH: | |
1da177e4 LT |
3717 | ZFCP_LOG_NORMAL("bug: The port handle 0x%x has changed " |
3718 | "unexpectedly. (adapter %s, port 0x%016Lx, " | |
3719 | "unit 0x%016Lx)\n", | |
3720 | unit->port->handle, | |
3721 | zfcp_get_busid_by_unit(unit), | |
3722 | unit->port->wwpn, | |
3723 | unit->fcp_lun); | |
3724 | ZFCP_LOG_NORMAL("status qualifier:\n"); | |
3725 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL, | |
3726 | (char *) &header->fsf_status_qual, | |
3727 | sizeof (union fsf_status_qual)); | |
9467a9b3 MP |
3728 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 114, |
3729 | (u64)fsf_req); | |
1da177e4 LT |
3730 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3731 | break; | |
3732 | ||
3733 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: | |
06506d00 AH |
3734 | ZFCP_LOG_INFO("error: adapter %s does not support fc " |
3735 | "class %d.\n", | |
3736 | zfcp_get_busid_by_unit(unit), | |
3737 | ZFCP_FC_SERVICE_CLASS_DEFAULT); | |
1da177e4 | 3738 | /* stop operation for this adapter */ |
9467a9b3 MP |
3739 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 132, |
3740 | (u64)fsf_req); | |
1da177e4 LT |
3741 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3742 | break; | |
3743 | ||
3744 | case FSF_FCPLUN_NOT_VALID: | |
1da177e4 LT |
3745 | ZFCP_LOG_NORMAL("bug: unit 0x%016Lx on port 0x%016Lx on " |
3746 | "adapter %s does not have correct unit " | |
3747 | "handle 0x%x\n", | |
3748 | unit->fcp_lun, | |
3749 | unit->port->wwpn, | |
3750 | zfcp_get_busid_by_unit(unit), | |
3751 | unit->handle); | |
3752 | ZFCP_LOG_DEBUG("status qualifier:\n"); | |
3753 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3754 | (char *) &header->fsf_status_qual, | |
3755 | sizeof (union fsf_status_qual)); | |
9467a9b3 | 3756 | zfcp_erp_port_reopen(unit->port, 0, 115, (u64)fsf_req); |
1da177e4 LT |
3757 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3758 | break; | |
3759 | ||
3760 | case FSF_ACCESS_DENIED: | |
1da177e4 LT |
3761 | ZFCP_LOG_NORMAL("Access denied, cannot send FCP command to " |
3762 | "unit 0x%016Lx on port 0x%016Lx on " | |
3763 | "adapter %s\n", unit->fcp_lun, unit->port->wwpn, | |
3764 | zfcp_get_busid_by_unit(unit)); | |
3765 | for (counter = 0; counter < 2; counter++) { | |
3766 | subtable = header->fsf_status_qual.halfword[counter * 2]; | |
3767 | rule = header->fsf_status_qual.halfword[counter * 2 + 1]; | |
3768 | switch (subtable) { | |
3769 | case FSF_SQ_CFDC_SUBTABLE_OS: | |
3770 | case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN: | |
3771 | case FSF_SQ_CFDC_SUBTABLE_PORT_DID: | |
3772 | case FSF_SQ_CFDC_SUBTABLE_LUN: | |
3773 | ZFCP_LOG_INFO("Access denied (%s rule %d)\n", | |
3774 | zfcp_act_subtable_type[subtable], rule); | |
3775 | break; | |
3776 | } | |
3777 | } | |
698ec016 | 3778 | zfcp_erp_unit_access_denied(unit, 61, (u64)fsf_req); |
1da177e4 LT |
3779 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3780 | break; | |
3781 | ||
3782 | case FSF_DIRECTION_INDICATOR_NOT_VALID: | |
1da177e4 LT |
3783 | ZFCP_LOG_INFO("bug: Invalid data direction given for unit " |
3784 | "0x%016Lx on port 0x%016Lx on adapter %s " | |
3785 | "(debug info %d)\n", | |
3786 | unit->fcp_lun, | |
3787 | unit->port->wwpn, | |
3788 | zfcp_get_busid_by_unit(unit), | |
3789 | fsf_req->qtcb->bottom.io.data_direction); | |
3790 | /* stop operation for this adapter */ | |
9467a9b3 MP |
3791 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 133, |
3792 | (u64)fsf_req); | |
1da177e4 LT |
3793 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3794 | break; | |
3795 | ||
3796 | case FSF_CMND_LENGTH_NOT_VALID: | |
1da177e4 LT |
3797 | ZFCP_LOG_NORMAL |
3798 | ("bug: An invalid control-data-block length field " | |
3799 | "was found in a command for unit 0x%016Lx on port " | |
3800 | "0x%016Lx on adapter %s " "(debug info %d)\n", | |
3801 | unit->fcp_lun, unit->port->wwpn, | |
3802 | zfcp_get_busid_by_unit(unit), | |
3803 | fsf_req->qtcb->bottom.io.fcp_cmnd_length); | |
3804 | /* stop operation for this adapter */ | |
9467a9b3 MP |
3805 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 134, |
3806 | (u64)fsf_req); | |
1da177e4 LT |
3807 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
3808 | break; | |
3809 | ||
3810 | case FSF_PORT_BOXED: | |
1da177e4 LT |
3811 | ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s " |
3812 | "needs to be reopened\n", | |
3813 | unit->port->wwpn, zfcp_get_busid_by_unit(unit)); | |
698ec016 | 3814 | zfcp_erp_port_boxed(unit->port, 53, (u64)fsf_req); |
1da177e4 LT |
3815 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
3816 | ZFCP_STATUS_FSFREQ_RETRY; | |
3817 | break; | |
3818 | ||
3819 | case FSF_LUN_BOXED: | |
1da177e4 LT |
3820 | ZFCP_LOG_NORMAL("unit needs to be reopened (adapter %s, " |
3821 | "wwpn=0x%016Lx, fcp_lun=0x%016Lx)\n", | |
3822 | zfcp_get_busid_by_unit(unit), | |
3823 | unit->port->wwpn, unit->fcp_lun); | |
698ec016 | 3824 | zfcp_erp_unit_boxed(unit, 54, (u64)fsf_req); |
1da177e4 LT |
3825 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
3826 | | ZFCP_STATUS_FSFREQ_RETRY; | |
3827 | break; | |
3828 | ||
3829 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1da177e4 LT |
3830 | switch (header->fsf_status_qual.word[0]) { |
3831 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 3832 | /* re-establish link to port */ |
65a8d4e1 | 3833 | zfcp_test_link(unit->port); |
1da177e4 LT |
3834 | break; |
3835 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
1da177e4 LT |
3836 | /* FIXME(hw) need proper specs for proper action */ |
3837 | /* let scsi stack deal with retries and escalation */ | |
1da177e4 LT |
3838 | break; |
3839 | default: | |
1da177e4 | 3840 | ZFCP_LOG_NORMAL |
516a4201 | 3841 | ("Unknown status qualifier 0x%x arrived.\n", |
1da177e4 | 3842 | header->fsf_status_qual.word[0]); |
1da177e4 LT |
3843 | break; |
3844 | } | |
516a4201 | 3845 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
3846 | break; |
3847 | ||
3848 | case FSF_GOOD: | |
1da177e4 LT |
3849 | break; |
3850 | ||
3851 | case FSF_FCP_RSP_AVAILABLE: | |
1da177e4 | 3852 | break; |
1da177e4 LT |
3853 | } |
3854 | ||
3855 | skip_fsfstatus: | |
3856 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT) { | |
3857 | retval = | |
3858 | zfcp_fsf_send_fcp_command_task_management_handler(fsf_req); | |
3859 | } else { | |
3860 | retval = zfcp_fsf_send_fcp_command_task_handler(fsf_req); | |
059c97d0 AH |
3861 | fsf_req->unit = NULL; |
3862 | zfcp_unit_put(unit); | |
1da177e4 LT |
3863 | } |
3864 | return retval; | |
3865 | } | |
3866 | ||
3867 | /* | |
3868 | * function: zfcp_fsf_send_fcp_command_task_handler | |
3869 | * | |
3870 | * purpose: evaluates FCP_RSP IU | |
3871 | * | |
41fa2ada | 3872 | * returns: |
1da177e4 LT |
3873 | */ |
3874 | static int | |
3875 | zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *fsf_req) | |
3876 | { | |
3877 | int retval = 0; | |
3878 | struct scsi_cmnd *scpnt; | |
3879 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) | |
3880 | &(fsf_req->qtcb->bottom.io.fcp_rsp); | |
3881 | struct fcp_cmnd_iu *fcp_cmnd_iu = (struct fcp_cmnd_iu *) | |
3882 | &(fsf_req->qtcb->bottom.io.fcp_cmnd); | |
3883 | u32 sns_len; | |
3884 | char *fcp_rsp_info = zfcp_get_fcp_rsp_info_ptr(fcp_rsp_iu); | |
3885 | unsigned long flags; | |
059c97d0 | 3886 | struct zfcp_unit *unit = fsf_req->unit; |
1da177e4 LT |
3887 | |
3888 | read_lock_irqsave(&fsf_req->adapter->abort_lock, flags); | |
059c97d0 | 3889 | scpnt = (struct scsi_cmnd *) fsf_req->data; |
1da177e4 LT |
3890 | if (unlikely(!scpnt)) { |
3891 | ZFCP_LOG_DEBUG | |
3892 | ("Command with fsf_req %p is not associated to " | |
3893 | "a scsi command anymore. Aborted?\n", fsf_req); | |
3894 | goto out; | |
3895 | } | |
3896 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ABORTED)) { | |
3897 | /* FIXME: (design) mid-layer should handle DID_ABORT like | |
3898 | * DID_SOFT_ERROR by retrying the request for devices | |
3899 | * that allow retries. | |
3900 | */ | |
3901 | ZFCP_LOG_DEBUG("Setting DID_SOFT_ERROR and SUGGEST_RETRY\n"); | |
3902 | set_host_byte(&scpnt->result, DID_SOFT_ERROR); | |
3903 | set_driver_byte(&scpnt->result, SUGGEST_RETRY); | |
3904 | goto skip_fsfstatus; | |
3905 | } | |
3906 | ||
3907 | if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
3908 | ZFCP_LOG_DEBUG("Setting DID_ERROR\n"); | |
3909 | set_host_byte(&scpnt->result, DID_ERROR); | |
3910 | goto skip_fsfstatus; | |
3911 | } | |
3912 | ||
3913 | /* set message byte of result in SCSI command */ | |
3914 | scpnt->result |= COMMAND_COMPLETE << 8; | |
3915 | ||
3916 | /* | |
3917 | * copy SCSI status code of FCP_STATUS of FCP_RSP IU to status byte | |
3918 | * of result in SCSI command | |
3919 | */ | |
3920 | scpnt->result |= fcp_rsp_iu->scsi_status; | |
3921 | if (unlikely(fcp_rsp_iu->scsi_status)) { | |
3922 | /* DEBUG */ | |
3923 | ZFCP_LOG_DEBUG("status for SCSI Command:\n"); | |
3924 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3925 | scpnt->cmnd, scpnt->cmd_len); | |
3926 | ZFCP_LOG_DEBUG("SCSI status code 0x%x\n", | |
3927 | fcp_rsp_iu->scsi_status); | |
3928 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3929 | (void *) fcp_rsp_iu, sizeof (struct fcp_rsp_iu)); | |
3930 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3931 | zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), | |
3932 | fcp_rsp_iu->fcp_sns_len); | |
3933 | } | |
3934 | ||
3935 | /* check FCP_RSP_INFO */ | |
3936 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) { | |
3937 | ZFCP_LOG_DEBUG("rsp_len is valid\n"); | |
3938 | switch (fcp_rsp_info[3]) { | |
3939 | case RSP_CODE_GOOD: | |
1da177e4 LT |
3940 | /* ok, continue */ |
3941 | ZFCP_LOG_TRACE("no failure or Task Management " | |
3942 | "Function complete\n"); | |
3943 | set_host_byte(&scpnt->result, DID_OK); | |
3944 | break; | |
3945 | case RSP_CODE_LENGTH_MISMATCH: | |
1da177e4 LT |
3946 | /* hardware bug */ |
3947 | ZFCP_LOG_NORMAL("bug: FCP response code indictates " | |
3948 | "that the fibrechannel protocol data " | |
3949 | "length differs from the burst length. " | |
3950 | "The problem occured on unit 0x%016Lx " | |
3951 | "on port 0x%016Lx on adapter %s", | |
3952 | unit->fcp_lun, | |
3953 | unit->port->wwpn, | |
3954 | zfcp_get_busid_by_unit(unit)); | |
3955 | /* dump SCSI CDB as prepared by zfcp */ | |
3956 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3957 | (char *) &fsf_req->qtcb-> | |
3958 | bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE); | |
1da177e4 LT |
3959 | set_host_byte(&scpnt->result, DID_ERROR); |
3960 | goto skip_fsfstatus; | |
3961 | case RSP_CODE_FIELD_INVALID: | |
1da177e4 LT |
3962 | /* driver or hardware bug */ |
3963 | ZFCP_LOG_NORMAL("bug: FCP response code indictates " | |
3964 | "that the fibrechannel protocol data " | |
3965 | "fields were incorrectly set up. " | |
3966 | "The problem occured on the unit " | |
3967 | "0x%016Lx on port 0x%016Lx on " | |
3968 | "adapter %s", | |
3969 | unit->fcp_lun, | |
3970 | unit->port->wwpn, | |
3971 | zfcp_get_busid_by_unit(unit)); | |
3972 | /* dump SCSI CDB as prepared by zfcp */ | |
3973 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3974 | (char *) &fsf_req->qtcb-> | |
3975 | bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE); | |
3976 | set_host_byte(&scpnt->result, DID_ERROR); | |
1da177e4 LT |
3977 | goto skip_fsfstatus; |
3978 | case RSP_CODE_RO_MISMATCH: | |
1da177e4 LT |
3979 | /* hardware bug */ |
3980 | ZFCP_LOG_NORMAL("bug: The FCP response code indicates " | |
3981 | "that conflicting values for the " | |
3982 | "fibrechannel payload offset from the " | |
3983 | "header were found. " | |
3984 | "The problem occured on unit 0x%016Lx " | |
3985 | "on port 0x%016Lx on adapter %s.\n", | |
3986 | unit->fcp_lun, | |
3987 | unit->port->wwpn, | |
3988 | zfcp_get_busid_by_unit(unit)); | |
3989 | /* dump SCSI CDB as prepared by zfcp */ | |
3990 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
3991 | (char *) &fsf_req->qtcb-> | |
3992 | bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE); | |
1da177e4 LT |
3993 | set_host_byte(&scpnt->result, DID_ERROR); |
3994 | goto skip_fsfstatus; | |
3995 | default: | |
3996 | ZFCP_LOG_NORMAL("bug: An invalid FCP response " | |
3997 | "code was detected for a command. " | |
3998 | "The problem occured on the unit " | |
3999 | "0x%016Lx on port 0x%016Lx on " | |
4000 | "adapter %s (debug info 0x%x)\n", | |
4001 | unit->fcp_lun, | |
4002 | unit->port->wwpn, | |
4003 | zfcp_get_busid_by_unit(unit), | |
4004 | fcp_rsp_info[3]); | |
4005 | /* dump SCSI CDB as prepared by zfcp */ | |
4006 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG, | |
4007 | (char *) &fsf_req->qtcb-> | |
4008 | bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE); | |
1da177e4 | 4009 | set_host_byte(&scpnt->result, DID_ERROR); |
6f71d9bc | 4010 | goto skip_fsfstatus; |
1da177e4 LT |
4011 | } |
4012 | } | |
4013 | ||
4014 | /* check for sense data */ | |
4015 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_sns_len_valid)) { | |
4016 | sns_len = FSF_FCP_RSP_SIZE - | |
4017 | sizeof (struct fcp_rsp_iu) + fcp_rsp_iu->fcp_rsp_len; | |
4018 | ZFCP_LOG_TRACE("room for %i bytes sense data in QTCB\n", | |
4019 | sns_len); | |
4020 | sns_len = min(sns_len, (u32) SCSI_SENSE_BUFFERSIZE); | |
4021 | ZFCP_LOG_TRACE("room for %i bytes sense data in SCSI command\n", | |
4022 | SCSI_SENSE_BUFFERSIZE); | |
4023 | sns_len = min(sns_len, fcp_rsp_iu->fcp_sns_len); | |
4024 | ZFCP_LOG_TRACE("scpnt->result =0x%x, command was:\n", | |
4025 | scpnt->result); | |
4026 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, | |
4027 | (void *) &scpnt->cmnd, scpnt->cmd_len); | |
4028 | ||
4029 | ZFCP_LOG_TRACE("%i bytes sense data provided by FCP\n", | |
4030 | fcp_rsp_iu->fcp_sns_len); | |
9d058ecf | 4031 | memcpy(scpnt->sense_buffer, |
1da177e4 LT |
4032 | zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len); |
4033 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, | |
9d058ecf | 4034 | (void *)scpnt->sense_buffer, sns_len); |
1da177e4 LT |
4035 | } |
4036 | ||
4037 | /* check for overrun */ | |
4038 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_over)) { | |
4039 | ZFCP_LOG_INFO("A data overrun was detected for a command. " | |
4040 | "unit 0x%016Lx, port 0x%016Lx, adapter %s. " | |
4041 | "The response data length is " | |
4042 | "%d, the original length was %d.\n", | |
4043 | unit->fcp_lun, | |
4044 | unit->port->wwpn, | |
4045 | zfcp_get_busid_by_unit(unit), | |
4046 | fcp_rsp_iu->fcp_resid, | |
4047 | (int) zfcp_get_fcp_dl(fcp_cmnd_iu)); | |
4048 | } | |
4049 | ||
4050 | /* check for underrun */ | |
4051 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_under)) { | |
4052 | ZFCP_LOG_INFO("A data underrun was detected for a command. " | |
4053 | "unit 0x%016Lx, port 0x%016Lx, adapter %s. " | |
4054 | "The response data length is " | |
4055 | "%d, the original length was %d.\n", | |
4056 | unit->fcp_lun, | |
4057 | unit->port->wwpn, | |
4058 | zfcp_get_busid_by_unit(unit), | |
4059 | fcp_rsp_iu->fcp_resid, | |
4060 | (int) zfcp_get_fcp_dl(fcp_cmnd_iu)); | |
4061 | ||
7936a892 FT |
4062 | scsi_set_resid(scpnt, fcp_rsp_iu->fcp_resid); |
4063 | if (scsi_bufflen(scpnt) - scsi_get_resid(scpnt) < | |
4064 | scpnt->underflow) | |
6f71d9bc | 4065 | set_host_byte(&scpnt->result, DID_ERROR); |
1da177e4 LT |
4066 | } |
4067 | ||
4068 | skip_fsfstatus: | |
4069 | ZFCP_LOG_DEBUG("scpnt->result =0x%x\n", scpnt->result); | |
4070 | ||
8a36e453 | 4071 | if (scpnt->result != 0) |
ed829ad6 | 4072 | zfcp_scsi_dbf_event_result("erro", 3, fsf_req->adapter, scpnt, fsf_req); |
8a36e453 | 4073 | else if (scpnt->retries > 0) |
ed829ad6 | 4074 | zfcp_scsi_dbf_event_result("retr", 4, fsf_req->adapter, scpnt, fsf_req); |
8a36e453 | 4075 | else |
ed829ad6 | 4076 | zfcp_scsi_dbf_event_result("norm", 6, fsf_req->adapter, scpnt, fsf_req); |
1da177e4 LT |
4077 | |
4078 | /* cleanup pointer (need this especially for abort) */ | |
4079 | scpnt->host_scribble = NULL; | |
4080 | ||
1da177e4 | 4081 | /* always call back */ |
1da177e4 LT |
4082 | (scpnt->scsi_done) (scpnt); |
4083 | ||
4084 | /* | |
4085 | * We must hold this lock until scsi_done has been called. | |
4086 | * Otherwise we may call scsi_done after abort regarding this | |
4087 | * command has completed. | |
4088 | * Note: scsi_done must not block! | |
4089 | */ | |
4090 | out: | |
4091 | read_unlock_irqrestore(&fsf_req->adapter->abort_lock, flags); | |
4092 | return retval; | |
4093 | } | |
4094 | ||
4095 | /* | |
4096 | * function: zfcp_fsf_send_fcp_command_task_management_handler | |
4097 | * | |
4098 | * purpose: evaluates FCP_RSP IU | |
4099 | * | |
41fa2ada | 4100 | * returns: |
1da177e4 LT |
4101 | */ |
4102 | static int | |
4103 | zfcp_fsf_send_fcp_command_task_management_handler(struct zfcp_fsf_req *fsf_req) | |
4104 | { | |
4105 | int retval = 0; | |
4106 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) | |
4107 | &(fsf_req->qtcb->bottom.io.fcp_rsp); | |
4108 | char *fcp_rsp_info = zfcp_get_fcp_rsp_info_ptr(fcp_rsp_iu); | |
059c97d0 | 4109 | struct zfcp_unit *unit = (struct zfcp_unit *) fsf_req->data; |
1da177e4 | 4110 | |
1da177e4 LT |
4111 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { |
4112 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
4113 | goto skip_fsfstatus; | |
4114 | } | |
4115 | ||
4116 | /* check FCP_RSP_INFO */ | |
4117 | switch (fcp_rsp_info[3]) { | |
4118 | case RSP_CODE_GOOD: | |
1da177e4 LT |
4119 | /* ok, continue */ |
4120 | ZFCP_LOG_DEBUG("no failure or Task Management " | |
4121 | "Function complete\n"); | |
4122 | break; | |
4123 | case RSP_CODE_TASKMAN_UNSUPP: | |
1da177e4 LT |
4124 | ZFCP_LOG_NORMAL("bug: A reuested task management function " |
4125 | "is not supported on the target device " | |
4126 | "unit 0x%016Lx, port 0x%016Lx, adapter %s\n ", | |
4127 | unit->fcp_lun, | |
4128 | unit->port->wwpn, | |
4129 | zfcp_get_busid_by_unit(unit)); | |
4130 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP; | |
4131 | break; | |
4132 | case RSP_CODE_TASKMAN_FAILED: | |
1da177e4 LT |
4133 | ZFCP_LOG_NORMAL("bug: A reuested task management function " |
4134 | "failed to complete successfully. " | |
4135 | "unit 0x%016Lx, port 0x%016Lx, adapter %s.\n", | |
4136 | unit->fcp_lun, | |
4137 | unit->port->wwpn, | |
4138 | zfcp_get_busid_by_unit(unit)); | |
4139 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
4140 | break; | |
4141 | default: | |
4142 | ZFCP_LOG_NORMAL("bug: An invalid FCP response " | |
4143 | "code was detected for a command. " | |
4144 | "unit 0x%016Lx, port 0x%016Lx, adapter %s " | |
4145 | "(debug info 0x%x)\n", | |
4146 | unit->fcp_lun, | |
4147 | unit->port->wwpn, | |
4148 | zfcp_get_busid_by_unit(unit), | |
4149 | fcp_rsp_info[3]); | |
4150 | fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
4151 | } | |
4152 | ||
4153 | skip_fsfstatus: | |
4154 | return retval; | |
4155 | } | |
4156 | ||
4157 | ||
4158 | /* | |
4159 | * function: zfcp_fsf_control_file | |
4160 | * | |
4161 | * purpose: Initiator of the control file upload/download FSF requests | |
4162 | * | |
4163 | * returns: 0 - FSF request is successfuly created and queued | |
4164 | * -EOPNOTSUPP - The FCP adapter does not have Control File support | |
4165 | * -EINVAL - Invalid direction specified | |
4166 | * -ENOMEM - Insufficient memory | |
4167 | * -EPERM - Cannot create FSF request or place it in QDIO queue | |
4168 | */ | |
4169 | int | |
4170 | zfcp_fsf_control_file(struct zfcp_adapter *adapter, | |
4171 | struct zfcp_fsf_req **fsf_req_ptr, | |
4172 | u32 fsf_command, | |
4173 | u32 option, | |
4174 | struct zfcp_sg_list *sg_list) | |
4175 | { | |
4176 | struct zfcp_fsf_req *fsf_req; | |
4177 | struct fsf_qtcb_bottom_support *bottom; | |
4178 | volatile struct qdio_buffer_element *sbale; | |
1da177e4 LT |
4179 | unsigned long lock_flags; |
4180 | int req_flags = 0; | |
4181 | int direction; | |
4182 | int retval = 0; | |
4183 | ||
aef4a983 | 4184 | if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) { |
1da177e4 LT |
4185 | ZFCP_LOG_INFO("cfdc not supported (adapter %s)\n", |
4186 | zfcp_get_busid_by_adapter(adapter)); | |
4187 | retval = -EOPNOTSUPP; | |
4188 | goto out; | |
4189 | } | |
4190 | ||
4191 | switch (fsf_command) { | |
4192 | ||
4193 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
4194 | direction = SBAL_FLAGS0_TYPE_WRITE; | |
4195 | if ((option != FSF_CFDC_OPTION_FULL_ACCESS) && | |
4196 | (option != FSF_CFDC_OPTION_RESTRICTED_ACCESS)) | |
4197 | req_flags = ZFCP_WAIT_FOR_SBAL; | |
4198 | break; | |
4199 | ||
4200 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
4201 | direction = SBAL_FLAGS0_TYPE_READ; | |
4202 | break; | |
4203 | ||
4204 | default: | |
4205 | ZFCP_LOG_INFO("Invalid FSF command code 0x%08x\n", fsf_command); | |
4206 | retval = -EINVAL; | |
4207 | goto out; | |
4208 | } | |
4209 | ||
1da177e4 LT |
4210 | retval = zfcp_fsf_req_create(adapter, fsf_command, req_flags, |
4211 | NULL, &lock_flags, &fsf_req); | |
4212 | if (retval < 0) { | |
4213 | ZFCP_LOG_INFO("error: Could not create FSF request for the " | |
4214 | "adapter %s\n", | |
4215 | zfcp_get_busid_by_adapter(adapter)); | |
4216 | retval = -EPERM; | |
4217 | goto unlock_queue_lock; | |
4218 | } | |
4219 | ||
4220 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
4221 | sbale[0].flags |= direction; | |
4222 | ||
4223 | bottom = &fsf_req->qtcb->bottom.support; | |
4224 | bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE; | |
4225 | bottom->option = option; | |
4226 | ||
4227 | if (sg_list->count > 0) { | |
4228 | int bytes; | |
4229 | ||
4230 | bytes = zfcp_qdio_sbals_from_sg(fsf_req, direction, | |
4231 | sg_list->sg, sg_list->count, | |
4232 | ZFCP_MAX_SBALS_PER_REQ); | |
4233 | if (bytes != ZFCP_CFDC_MAX_CONTROL_FILE_SIZE) { | |
4234 | ZFCP_LOG_INFO( | |
4235 | "error: Could not create sufficient number of " | |
4236 | "SBALS for an FSF request to the adapter %s\n", | |
4237 | zfcp_get_busid_by_adapter(adapter)); | |
4238 | retval = -ENOMEM; | |
4239 | goto free_fsf_req; | |
4240 | } | |
4241 | } else | |
4242 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
4243 | ||
2abbe866 AH |
4244 | zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT); |
4245 | retval = zfcp_fsf_req_send(fsf_req); | |
1da177e4 LT |
4246 | if (retval < 0) { |
4247 | ZFCP_LOG_INFO("initiation of cfdc up/download failed" | |
4248 | "(adapter %s)\n", | |
4249 | zfcp_get_busid_by_adapter(adapter)); | |
4250 | retval = -EPERM; | |
4251 | goto free_fsf_req; | |
4252 | } | |
4253 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
4254 | ||
4255 | ZFCP_LOG_NORMAL("Control file %s FSF request has been sent to the " | |
4256 | "adapter %s\n", | |
4257 | fsf_command == FSF_QTCB_DOWNLOAD_CONTROL_FILE ? | |
4258 | "download" : "upload", | |
4259 | zfcp_get_busid_by_adapter(adapter)); | |
4260 | ||
4261 | wait_event(fsf_req->completion_wq, | |
4262 | fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
4263 | ||
4264 | *fsf_req_ptr = fsf_req; | |
2abbe866 | 4265 | goto out; |
1da177e4 LT |
4266 | |
4267 | free_fsf_req: | |
4268 | zfcp_fsf_req_free(fsf_req); | |
4269 | unlock_queue_lock: | |
4270 | write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags); | |
1da177e4 LT |
4271 | out: |
4272 | return retval; | |
4273 | } | |
4274 | ||
4275 | ||
4276 | /* | |
4277 | * function: zfcp_fsf_control_file_handler | |
4278 | * | |
4279 | * purpose: Handler of the control file upload/download FSF requests | |
4280 | * | |
4281 | * returns: 0 - FSF request successfuly processed | |
4282 | * -EAGAIN - Operation has to be repeated because of a temporary problem | |
4283 | * -EACCES - There is no permission to execute an operation | |
4284 | * -EPERM - The control file is not in a right format | |
4285 | * -EIO - There is a problem with the FCP adapter | |
4286 | * -EINVAL - Invalid operation | |
4287 | * -EFAULT - User space memory I/O operation fault | |
4288 | */ | |
4289 | static int | |
4290 | zfcp_fsf_control_file_handler(struct zfcp_fsf_req *fsf_req) | |
4291 | { | |
4292 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
4293 | struct fsf_qtcb_header *header = &fsf_req->qtcb->header; | |
4294 | struct fsf_qtcb_bottom_support *bottom = &fsf_req->qtcb->bottom.support; | |
4295 | int retval = 0; | |
4296 | ||
4297 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
4298 | retval = -EINVAL; | |
4299 | goto skip_fsfstatus; | |
4300 | } | |
4301 | ||
4302 | switch (header->fsf_status) { | |
4303 | ||
4304 | case FSF_GOOD: | |
1da177e4 LT |
4305 | ZFCP_LOG_NORMAL( |
4306 | "The FSF request has been successfully completed " | |
4307 | "on the adapter %s\n", | |
4308 | zfcp_get_busid_by_adapter(adapter)); | |
4309 | break; | |
4310 | ||
4311 | case FSF_OPERATION_PARTIALLY_SUCCESSFUL: | |
1da177e4 LT |
4312 | if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE) { |
4313 | switch (header->fsf_status_qual.word[0]) { | |
4314 | ||
6f71d9bc JB |
4315 | case FSF_SQ_CFDC_HARDENED_ON_SE: |
4316 | ZFCP_LOG_NORMAL( | |
4317 | "CFDC on the adapter %s has being " | |
4318 | "hardened on primary and secondary SE\n", | |
4319 | zfcp_get_busid_by_adapter(adapter)); | |
4320 | break; | |
4321 | ||
1da177e4 LT |
4322 | case FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE: |
4323 | ZFCP_LOG_NORMAL( | |
4324 | "CFDC of the adapter %s could not " | |
4325 | "be saved on the SE\n", | |
4326 | zfcp_get_busid_by_adapter(adapter)); | |
4327 | break; | |
4328 | ||
4329 | case FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE2: | |
4330 | ZFCP_LOG_NORMAL( | |
4331 | "CFDC of the adapter %s could not " | |
4332 | "be copied to the secondary SE\n", | |
4333 | zfcp_get_busid_by_adapter(adapter)); | |
4334 | break; | |
4335 | ||
4336 | default: | |
4337 | ZFCP_LOG_NORMAL( | |
4338 | "CFDC could not be hardened " | |
4339 | "on the adapter %s\n", | |
4340 | zfcp_get_busid_by_adapter(adapter)); | |
4341 | } | |
4342 | } | |
4343 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4344 | retval = -EAGAIN; | |
4345 | break; | |
4346 | ||
4347 | case FSF_AUTHORIZATION_FAILURE: | |
1da177e4 LT |
4348 | ZFCP_LOG_NORMAL( |
4349 | "Adapter %s does not accept privileged commands\n", | |
4350 | zfcp_get_busid_by_adapter(adapter)); | |
4351 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4352 | retval = -EACCES; | |
4353 | break; | |
4354 | ||
4355 | case FSF_CFDC_ERROR_DETECTED: | |
1da177e4 LT |
4356 | ZFCP_LOG_NORMAL( |
4357 | "Error at position %d in the CFDC, " | |
4358 | "CFDC is discarded by the adapter %s\n", | |
4359 | header->fsf_status_qual.word[0], | |
4360 | zfcp_get_busid_by_adapter(adapter)); | |
4361 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4362 | retval = -EPERM; | |
4363 | break; | |
4364 | ||
4365 | case FSF_CONTROL_FILE_UPDATE_ERROR: | |
1da177e4 LT |
4366 | ZFCP_LOG_NORMAL( |
4367 | "Adapter %s cannot harden the control file, " | |
4368 | "file is discarded\n", | |
4369 | zfcp_get_busid_by_adapter(adapter)); | |
4370 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4371 | retval = -EIO; | |
4372 | break; | |
4373 | ||
4374 | case FSF_CONTROL_FILE_TOO_LARGE: | |
1da177e4 LT |
4375 | ZFCP_LOG_NORMAL( |
4376 | "Control file is too large, file is discarded " | |
4377 | "by the adapter %s\n", | |
4378 | zfcp_get_busid_by_adapter(adapter)); | |
4379 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4380 | retval = -EIO; | |
4381 | break; | |
4382 | ||
4383 | case FSF_ACCESS_CONFLICT_DETECTED: | |
1da177e4 LT |
4384 | if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE) |
4385 | ZFCP_LOG_NORMAL( | |
4386 | "CFDC has been discarded by the adapter %s, " | |
4387 | "because activation would impact " | |
4388 | "%d active connection(s)\n", | |
4389 | zfcp_get_busid_by_adapter(adapter), | |
4390 | header->fsf_status_qual.word[0]); | |
4391 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4392 | retval = -EIO; | |
4393 | break; | |
4394 | ||
4395 | case FSF_CONFLICTS_OVERRULED: | |
1da177e4 LT |
4396 | if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE) |
4397 | ZFCP_LOG_NORMAL( | |
4398 | "CFDC has been activated on the adapter %s, " | |
4399 | "but activation has impacted " | |
4400 | "%d active connection(s)\n", | |
4401 | zfcp_get_busid_by_adapter(adapter), | |
4402 | header->fsf_status_qual.word[0]); | |
4403 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4404 | retval = -EIO; | |
4405 | break; | |
4406 | ||
4407 | case FSF_UNKNOWN_OP_SUBTYPE: | |
1da177e4 LT |
4408 | ZFCP_LOG_NORMAL("unknown operation subtype (adapter: %s, " |
4409 | "op_subtype=0x%x)\n", | |
4410 | zfcp_get_busid_by_adapter(adapter), | |
4411 | bottom->operation_subtype); | |
4412 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4413 | retval = -EINVAL; | |
4414 | break; | |
4415 | ||
4416 | case FSF_INVALID_COMMAND_OPTION: | |
1da177e4 LT |
4417 | ZFCP_LOG_NORMAL( |
4418 | "Invalid option 0x%x has been specified " | |
4419 | "in QTCB bottom sent to the adapter %s\n", | |
4420 | bottom->option, | |
4421 | zfcp_get_busid_by_adapter(adapter)); | |
4422 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
4423 | retval = -EINVAL; | |
4424 | break; | |
4425 | ||
4426 | default: | |
4427 | ZFCP_LOG_NORMAL( | |
4428 | "bug: An unknown/unexpected FSF status 0x%08x " | |
4429 | "was presented on the adapter %s\n", | |
4430 | header->fsf_status, | |
4431 | zfcp_get_busid_by_adapter(adapter)); | |
1da177e4 LT |
4432 | fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
4433 | retval = -EINVAL; | |
4434 | break; | |
4435 | } | |
4436 | ||
4437 | skip_fsfstatus: | |
4438 | return retval; | |
4439 | } | |
4440 | ||
1da177e4 LT |
4441 | static inline int |
4442 | zfcp_fsf_req_sbal_check(unsigned long *flags, | |
4443 | struct zfcp_qdio_queue *queue, int needed) | |
4444 | { | |
4445 | write_lock_irqsave(&queue->queue_lock, *flags); | |
4446 | if (likely(atomic_read(&queue->free_count) >= needed)) | |
4447 | return 1; | |
4448 | write_unlock_irqrestore(&queue->queue_lock, *flags); | |
4449 | return 0; | |
4450 | } | |
4451 | ||
4452 | /* | |
4453 | * set qtcb pointer in fsf_req and initialize QTCB | |
4454 | */ | |
4d284cac | 4455 | static void |
8a36e453 | 4456 | zfcp_fsf_req_qtcb_init(struct zfcp_fsf_req *fsf_req) |
1da177e4 LT |
4457 | { |
4458 | if (likely(fsf_req->qtcb != NULL)) { | |
fea9d6c7 VS |
4459 | fsf_req->qtcb->prefix.req_seq_no = |
4460 | fsf_req->adapter->fsf_req_seq_no; | |
4461 | fsf_req->qtcb->prefix.req_id = fsf_req->req_id; | |
1da177e4 | 4462 | fsf_req->qtcb->prefix.ulp_info = ZFCP_ULP_INFO_VERSION; |
fea9d6c7 VS |
4463 | fsf_req->qtcb->prefix.qtcb_type = |
4464 | fsf_qtcb_type[fsf_req->fsf_command]; | |
1da177e4 | 4465 | fsf_req->qtcb->prefix.qtcb_version = ZFCP_QTCB_VERSION; |
fea9d6c7 | 4466 | fsf_req->qtcb->header.req_handle = fsf_req->req_id; |
8a36e453 | 4467 | fsf_req->qtcb->header.fsf_command = fsf_req->fsf_command; |
1da177e4 LT |
4468 | } |
4469 | } | |
4470 | ||
4471 | /** | |
4472 | * zfcp_fsf_req_sbal_get - try to get one SBAL in the request queue | |
4473 | * @adapter: adapter for which request queue is examined | |
4474 | * @req_flags: flags indicating whether to wait for needed SBAL or not | |
4475 | * @lock_flags: lock_flags if queue_lock is taken | |
4476 | * Return: 0 on success, otherwise -EIO, or -ERESTARTSYS | |
4477 | * Locks: lock adapter->request_queue->queue_lock on success | |
4478 | */ | |
4479 | static int | |
4480 | zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter, int req_flags, | |
4481 | unsigned long *lock_flags) | |
4482 | { | |
4483 | long ret; | |
4484 | struct zfcp_qdio_queue *req_queue = &adapter->request_queue; | |
4485 | ||
4486 | if (unlikely(req_flags & ZFCP_WAIT_FOR_SBAL)) { | |
4487 | ret = wait_event_interruptible_timeout(adapter->request_wq, | |
4488 | zfcp_fsf_req_sbal_check(lock_flags, req_queue, 1), | |
4489 | ZFCP_SBAL_TIMEOUT); | |
4490 | if (ret < 0) | |
4491 | return ret; | |
4492 | if (!ret) | |
4493 | return -EIO; | |
4494 | } else if (!zfcp_fsf_req_sbal_check(lock_flags, req_queue, 1)) | |
4495 | return -EIO; | |
4496 | ||
4497 | return 0; | |
4498 | } | |
4499 | ||
4500 | /* | |
4501 | * function: zfcp_fsf_req_create | |
4502 | * | |
4503 | * purpose: create an FSF request at the specified adapter and | |
4504 | * setup common fields | |
4505 | * | |
4506 | * returns: -ENOMEM if there was insufficient memory for a request | |
4507 | * -EIO if no qdio buffers could be allocate to the request | |
4508 | * -EINVAL/-EPERM on bug conditions in req_dequeue | |
4509 | * 0 in success | |
4510 | * | |
4511 | * note: The created request is returned by reference. | |
4512 | * | |
4513 | * locks: lock of concerned request queue must not be held, | |
4514 | * but is held on completion (write, irqsave) | |
4515 | */ | |
4516 | int | |
4517 | zfcp_fsf_req_create(struct zfcp_adapter *adapter, u32 fsf_cmd, int req_flags, | |
4518 | mempool_t *pool, unsigned long *lock_flags, | |
4519 | struct zfcp_fsf_req **fsf_req_p) | |
4520 | { | |
4521 | volatile struct qdio_buffer_element *sbale; | |
4522 | struct zfcp_fsf_req *fsf_req = NULL; | |
4523 | int ret = 0; | |
4524 | struct zfcp_qdio_queue *req_queue = &adapter->request_queue; | |
4525 | ||
4526 | /* allocate new FSF request */ | |
4527 | fsf_req = zfcp_fsf_req_alloc(pool, req_flags); | |
4528 | if (unlikely(NULL == fsf_req)) { | |
ceb3dfba | 4529 | ZFCP_LOG_DEBUG("error: Could not put an FSF request into " |
1da177e4 LT |
4530 | "the outbound (send) queue.\n"); |
4531 | ret = -ENOMEM; | |
4532 | goto failed_fsf_req; | |
4533 | } | |
4534 | ||
8a36e453 MS |
4535 | fsf_req->adapter = adapter; |
4536 | fsf_req->fsf_command = fsf_cmd; | |
fea9d6c7 | 4537 | INIT_LIST_HEAD(&fsf_req->list); |
2abbe866 | 4538 | init_timer(&fsf_req->timer); |
1da177e4 | 4539 | |
41fa2ada | 4540 | /* initialize waitqueue which may be used to wait on |
1da177e4 LT |
4541 | this request completion */ |
4542 | init_waitqueue_head(&fsf_req->completion_wq); | |
4543 | ||
4544 | ret = zfcp_fsf_req_sbal_get(adapter, req_flags, lock_flags); | |
801e0ced | 4545 | if (ret < 0) |
1da177e4 | 4546 | goto failed_sbals; |
801e0ced CS |
4547 | |
4548 | /* this is serialized (we are holding req_queue-lock of adapter) */ | |
4549 | if (adapter->req_no == 0) | |
4550 | adapter->req_no++; | |
4551 | fsf_req->req_id = adapter->req_no++; | |
4552 | ||
4553 | zfcp_fsf_req_qtcb_init(fsf_req); | |
1da177e4 LT |
4554 | |
4555 | /* | |
4556 | * We hold queue_lock here. Check if QDIOUP is set and let request fail | |
4557 | * if it is not set (see also *_open_qdio and *_close_qdio). | |
4558 | */ | |
4559 | ||
4560 | if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)) { | |
4561 | write_unlock_irqrestore(&req_queue->queue_lock, *lock_flags); | |
4562 | ret = -EIO; | |
4563 | goto failed_sbals; | |
4564 | } | |
4565 | ||
8a36e453 MS |
4566 | if (fsf_req->qtcb) { |
4567 | fsf_req->seq_no = adapter->fsf_req_seq_no; | |
4568 | fsf_req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; | |
4569 | } | |
1da177e4 LT |
4570 | fsf_req->sbal_number = 1; |
4571 | fsf_req->sbal_first = req_queue->free_index; | |
4572 | fsf_req->sbal_curr = req_queue->free_index; | |
4573 | fsf_req->sbale_curr = 1; | |
4574 | ||
4575 | if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP)) { | |
4576 | fsf_req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; | |
4577 | } | |
4578 | ||
4579 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0); | |
4580 | ||
4581 | /* setup common SBALE fields */ | |
fea9d6c7 | 4582 | sbale[0].addr = (void *) fsf_req->req_id; |
1da177e4 LT |
4583 | sbale[0].flags |= SBAL_FLAGS0_COMMAND; |
4584 | if (likely(fsf_req->qtcb != NULL)) { | |
4585 | sbale[1].addr = (void *) fsf_req->qtcb; | |
4586 | sbale[1].length = sizeof(struct fsf_qtcb); | |
4587 | } | |
4588 | ||
4589 | ZFCP_LOG_TRACE("got %i free BUFFERs starting at index %i\n", | |
4590 | fsf_req->sbal_number, fsf_req->sbal_first); | |
4591 | ||
4592 | goto success; | |
4593 | ||
4594 | failed_sbals: | |
4595 | /* dequeue new FSF request previously enqueued */ | |
4596 | zfcp_fsf_req_free(fsf_req); | |
4597 | fsf_req = NULL; | |
4598 | ||
4599 | failed_fsf_req: | |
4600 | write_lock_irqsave(&req_queue->queue_lock, *lock_flags); | |
4601 | success: | |
4602 | *fsf_req_p = fsf_req; | |
4603 | return ret; | |
4604 | } | |
4605 | ||
4606 | /* | |
4607 | * function: zfcp_fsf_req_send | |
4608 | * | |
4609 | * purpose: start transfer of FSF request via QDIO | |
4610 | * | |
4611 | * returns: 0 - request transfer succesfully started | |
4612 | * !0 - start of request transfer failed | |
4613 | */ | |
2abbe866 | 4614 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *fsf_req) |
1da177e4 LT |
4615 | { |
4616 | struct zfcp_adapter *adapter; | |
4617 | struct zfcp_qdio_queue *req_queue; | |
4618 | volatile struct qdio_buffer_element *sbale; | |
8a36e453 | 4619 | int inc_seq_no; |
1da177e4 | 4620 | int new_distance_from_int; |
1da177e4 LT |
4621 | int retval = 0; |
4622 | ||
4623 | adapter = fsf_req->adapter; | |
4624 | req_queue = &adapter->request_queue, | |
4625 | ||
4626 | ||
4627 | /* FIXME(debug): remove it later */ | |
4628 | sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_first, 0); | |
4629 | ZFCP_LOG_DEBUG("SBALE0 flags=0x%x\n", sbale[0].flags); | |
4630 | ZFCP_LOG_TRACE("HEX DUMP OF SBALE1 PAYLOAD:\n"); | |
4631 | ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, (char *) sbale[1].addr, | |
4632 | sbale[1].length); | |
4633 | ||
fea9d6c7 VS |
4634 | /* put allocated FSF request into hash table */ |
4635 | spin_lock(&adapter->req_list_lock); | |
4636 | zfcp_reqlist_add(adapter, fsf_req); | |
4637 | spin_unlock(&adapter->req_list_lock); | |
1da177e4 | 4638 | |
8a36e453 MS |
4639 | inc_seq_no = (fsf_req->qtcb != NULL); |
4640 | ||
1da177e4 LT |
4641 | ZFCP_LOG_TRACE("request queue of adapter %s: " |
4642 | "next free SBAL is %i, %i free SBALs\n", | |
4643 | zfcp_get_busid_by_adapter(adapter), | |
4644 | req_queue->free_index, | |
4645 | atomic_read(&req_queue->free_count)); | |
4646 | ||
4647 | ZFCP_LOG_DEBUG("calling do_QDIO adapter %s, flags=0x%x, queue_no=%i, " | |
4648 | "index_in_queue=%i, count=%i, buffers=%p\n", | |
4649 | zfcp_get_busid_by_adapter(adapter), | |
4650 | QDIO_FLAG_SYNC_OUTPUT, | |
4651 | 0, fsf_req->sbal_first, fsf_req->sbal_number, | |
4652 | &req_queue->buffer[fsf_req->sbal_first]); | |
4653 | ||
4654 | /* | |
4655 | * adjust the number of free SBALs in request queue as well as | |
4656 | * position of first one | |
4657 | */ | |
4658 | atomic_sub(fsf_req->sbal_number, &req_queue->free_count); | |
4659 | ZFCP_LOG_TRACE("free_count=%d\n", atomic_read(&req_queue->free_count)); | |
4660 | req_queue->free_index += fsf_req->sbal_number; /* increase */ | |
4661 | req_queue->free_index %= QDIO_MAX_BUFFERS_PER_Q; /* wrap if needed */ | |
4662 | new_distance_from_int = zfcp_qdio_determine_pci(req_queue, fsf_req); | |
4663 | ||
8a36e453 MS |
4664 | fsf_req->issued = get_clock(); |
4665 | ||
1da177e4 LT |
4666 | retval = do_QDIO(adapter->ccw_device, |
4667 | QDIO_FLAG_SYNC_OUTPUT, | |
4668 | 0, fsf_req->sbal_first, fsf_req->sbal_number, NULL); | |
4669 | ||
4670 | if (unlikely(retval)) { | |
4671 | /* Queues are down..... */ | |
4672 | retval = -EIO; | |
2abbe866 | 4673 | del_timer(&fsf_req->timer); |
fea9d6c7 | 4674 | spin_lock(&adapter->req_list_lock); |
ca2d02c2 | 4675 | zfcp_reqlist_remove(adapter, fsf_req); |
fea9d6c7 VS |
4676 | spin_unlock(&adapter->req_list_lock); |
4677 | /* undo changes in request queue made for this request */ | |
1da177e4 LT |
4678 | zfcp_qdio_zero_sbals(req_queue->buffer, |
4679 | fsf_req->sbal_first, fsf_req->sbal_number); | |
4680 | atomic_add(fsf_req->sbal_number, &req_queue->free_count); | |
fea9d6c7 | 4681 | req_queue->free_index -= fsf_req->sbal_number; |
1da177e4 LT |
4682 | req_queue->free_index += QDIO_MAX_BUFFERS_PER_Q; |
4683 | req_queue->free_index %= QDIO_MAX_BUFFERS_PER_Q; /* wrap */ | |
9467a9b3 | 4684 | zfcp_erp_adapter_reopen(adapter, 0, 116, (u64)fsf_req); |
1da177e4 LT |
4685 | } else { |
4686 | req_queue->distance_from_int = new_distance_from_int; | |
4687 | /* | |
4688 | * increase FSF sequence counter - | |
4689 | * this must only be done for request successfully enqueued to | |
4690 | * QDIO this rejected requests may be cleaned up by calling | |
4691 | * routines resulting in missing sequence counter values | |
4692 | * otherwise, | |
4693 | */ | |
8a36e453 | 4694 | |
1da177e4 | 4695 | /* Don't increase for unsolicited status */ |
8a36e453 | 4696 | if (inc_seq_no) |
1da177e4 | 4697 | adapter->fsf_req_seq_no++; |
8a36e453 | 4698 | |
1da177e4 | 4699 | /* count FSF requests pending */ |
fea9d6c7 | 4700 | atomic_inc(&adapter->reqs_active); |
1da177e4 LT |
4701 | } |
4702 | return retval; | |
4703 | } | |
4704 | ||
1da177e4 | 4705 | #undef ZFCP_LOG_AREA |