Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
553448f6 | 2 | * zfcp device driver |
1da177e4 | 3 | * |
553448f6 | 4 | * Implementation of FSF commands. |
1da177e4 | 5 | * |
553448f6 | 6 | * Copyright IBM Corporation 2002, 2008 |
1da177e4 LT |
7 | */ |
8 | ||
1da177e4 LT |
9 | #include "zfcp_ext.h" |
10 | ||
287ac01a CS |
11 | static void zfcp_fsf_request_timeout_handler(unsigned long data) |
12 | { | |
13 | struct zfcp_adapter *adapter = (struct zfcp_adapter *) data; | |
14 | zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, 62, | |
15 | NULL); | |
16 | } | |
17 | ||
18 | static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req, | |
19 | unsigned long timeout) | |
20 | { | |
21 | fsf_req->timer.function = zfcp_fsf_request_timeout_handler; | |
22 | fsf_req->timer.data = (unsigned long) fsf_req->adapter; | |
23 | fsf_req->timer.expires = jiffies + timeout; | |
24 | add_timer(&fsf_req->timer); | |
25 | } | |
26 | ||
27 | static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req) | |
28 | { | |
29 | BUG_ON(!fsf_req->erp_action); | |
30 | fsf_req->timer.function = zfcp_erp_timeout_handler; | |
31 | fsf_req->timer.data = (unsigned long) fsf_req->erp_action; | |
32 | fsf_req->timer.expires = jiffies + 30 * HZ; | |
33 | add_timer(&fsf_req->timer); | |
34 | } | |
35 | ||
1da177e4 LT |
36 | /* association between FSF command and FSF QTCB type */ |
37 | static u32 fsf_qtcb_type[] = { | |
38 | [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND, | |
39 | [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND, | |
40 | [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND, | |
41 | [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND, | |
42 | [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND, | |
43 | [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND, | |
44 | [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND, | |
45 | [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND, | |
46 | [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND, | |
47 | [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND, | |
48 | [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND, | |
49 | [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND, | |
50 | [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND | |
51 | }; | |
52 | ||
c41f8cbd | 53 | static const char *zfcp_act_subtable_type[] = { |
1da177e4 LT |
54 | "unknown", "OS", "WWPN", "DID", "LUN" |
55 | }; | |
56 | ||
553448f6 CS |
57 | static void zfcp_act_eval_err(struct zfcp_adapter *adapter, u32 table) |
58 | { | |
c41f8cbd | 59 | u16 subtable = table >> 16; |
553448f6 CS |
60 | u16 rule = table & 0xffff; |
61 | ||
c41f8cbd | 62 | if (subtable && subtable < ARRAY_SIZE(zfcp_act_subtable_type)) |
553448f6 CS |
63 | dev_warn(&adapter->ccw_device->dev, |
64 | "Access denied in subtable %s, rule %d.\n", | |
65 | zfcp_act_subtable_type[subtable], rule); | |
553448f6 CS |
66 | } |
67 | ||
68 | static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req, | |
69 | struct zfcp_port *port) | |
70 | { | |
71 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
72 | dev_warn(&req->adapter->ccw_device->dev, | |
73 | "Access denied, cannot send command to port 0x%016Lx.\n", | |
74 | port->wwpn); | |
75 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); | |
76 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); | |
77 | zfcp_erp_port_access_denied(port, 55, req); | |
78 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
79 | } | |
80 | ||
81 | static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req *req, | |
82 | struct zfcp_unit *unit) | |
83 | { | |
84 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
85 | dev_warn(&req->adapter->ccw_device->dev, | |
86 | "Access denied for unit 0x%016Lx on port 0x%016Lx.\n", | |
87 | unit->fcp_lun, unit->port->wwpn); | |
88 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); | |
89 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); | |
90 | zfcp_erp_unit_access_denied(unit, 59, req); | |
91 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
92 | } | |
93 | ||
94 | static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req) | |
95 | { | |
96 | dev_err(&req->adapter->ccw_device->dev, | |
97 | "Required FC class not supported by adapter, " | |
98 | "shutting down adapter.\n"); | |
99 | zfcp_erp_adapter_shutdown(req->adapter, 0, 123, req); | |
100 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
101 | } | |
102 | ||
c41f8cbd SS |
103 | /** |
104 | * zfcp_fsf_req_free - free memory used by fsf request | |
105 | * @fsf_req: pointer to struct zfcp_fsf_req | |
1da177e4 | 106 | */ |
c41f8cbd | 107 | void zfcp_fsf_req_free(struct zfcp_fsf_req *req) |
1da177e4 | 108 | { |
c41f8cbd SS |
109 | if (likely(req->pool)) { |
110 | mempool_free(req, req->pool); | |
dd52e0ea HC |
111 | return; |
112 | } | |
113 | ||
c41f8cbd SS |
114 | if (req->qtcb) { |
115 | kmem_cache_free(zfcp_data.fsf_req_qtcb_cache, req); | |
dd52e0ea HC |
116 | return; |
117 | } | |
1da177e4 LT |
118 | } |
119 | ||
c41f8cbd SS |
120 | /** |
121 | * zfcp_fsf_req_dismiss_all - dismiss all fsf requests | |
122 | * @adapter: pointer to struct zfcp_adapter | |
123 | * | |
869b2b44 MP |
124 | * Never ever call this without shutting down the adapter first. |
125 | * Otherwise the adapter would continue using and corrupting s390 storage. | |
126 | * Included BUG_ON() call to ensure this is done. | |
127 | * ERP is supposed to be the only user of this function. | |
1da177e4 | 128 | */ |
6fcc4711 | 129 | void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter) |
1da177e4 | 130 | { |
c41f8cbd | 131 | struct zfcp_fsf_req *req, *tmp; |
fea9d6c7 | 132 | unsigned long flags; |
6fcc4711 | 133 | LIST_HEAD(remove_queue); |
869b2b44 | 134 | unsigned int i; |
fea9d6c7 | 135 | |
c41f8cbd | 136 | BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP); |
fea9d6c7 | 137 | spin_lock_irqsave(&adapter->req_list_lock, flags); |
869b2b44 | 138 | for (i = 0; i < REQUEST_LIST_SIZE; i++) |
6fcc4711 | 139 | list_splice_init(&adapter->req_list[i], &remove_queue); |
fea9d6c7 VS |
140 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); |
141 | ||
c41f8cbd SS |
142 | list_for_each_entry_safe(req, tmp, &remove_queue, list) { |
143 | list_del(&req->list); | |
144 | req->status |= ZFCP_STATUS_FSFREQ_DISMISSED; | |
145 | zfcp_fsf_req_complete(req); | |
1da177e4 | 146 | } |
1da177e4 LT |
147 | } |
148 | ||
c41f8cbd | 149 | static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req) |
1da177e4 | 150 | { |
c41f8cbd SS |
151 | struct fsf_status_read_buffer *sr_buf = req->data; |
152 | struct zfcp_adapter *adapter = req->adapter; | |
153 | struct zfcp_port *port; | |
154 | int d_id = sr_buf->d_id & ZFCP_DID_MASK; | |
155 | unsigned long flags; | |
1da177e4 | 156 | |
c41f8cbd SS |
157 | read_lock_irqsave(&zfcp_data.config_lock, flags); |
158 | list_for_each_entry(port, &adapter->port_list_head, list) | |
159 | if (port->d_id == d_id) { | |
160 | read_unlock_irqrestore(&zfcp_data.config_lock, flags); | |
161 | switch (sr_buf->status_subtype) { | |
162 | case FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT: | |
163 | zfcp_erp_port_reopen(port, 0, 101, req); | |
164 | break; | |
165 | case FSF_STATUS_READ_SUB_ERROR_PORT: | |
166 | zfcp_erp_port_shutdown(port, 0, 122, req); | |
167 | break; | |
168 | } | |
169 | return; | |
170 | } | |
171 | read_unlock_irqrestore(&zfcp_data.config_lock, flags); | |
1da177e4 LT |
172 | } |
173 | ||
c41f8cbd | 174 | static void zfcp_fsf_bit_error_threshold(struct zfcp_fsf_req *req) |
1da177e4 | 175 | { |
c41f8cbd SS |
176 | struct zfcp_adapter *adapter = req->adapter; |
177 | struct fsf_status_read_buffer *sr_buf = req->data; | |
178 | struct fsf_bit_error_payload *err = &sr_buf->payload.bit_error; | |
1da177e4 | 179 | |
c41f8cbd SS |
180 | dev_warn(&adapter->ccw_device->dev, |
181 | "Warning: bit error threshold data " | |
182 | "received for the adapter: " | |
183 | "link failures = %i, loss of sync errors = %i, " | |
184 | "loss of signal errors = %i, " | |
185 | "primitive sequence errors = %i, " | |
186 | "invalid transmission word errors = %i, " | |
187 | "CRC errors = %i).\n", | |
188 | err->link_failure_error_count, | |
189 | err->loss_of_sync_error_count, | |
190 | err->loss_of_signal_error_count, | |
191 | err->primitive_sequence_error_count, | |
192 | err->invalid_transmission_word_error_count, | |
193 | err->crc_error_count); | |
194 | dev_warn(&adapter->ccw_device->dev, | |
195 | "Additional bit error threshold data of the adapter: " | |
196 | "primitive sequence event time-outs = %i, " | |
197 | "elastic buffer overrun errors = %i, " | |
198 | "advertised receive buffer-to-buffer credit = %i, " | |
199 | "current receice buffer-to-buffer credit = %i, " | |
200 | "advertised transmit buffer-to-buffer credit = %i, " | |
201 | "current transmit buffer-to-buffer credit = %i).\n", | |
202 | err->primitive_sequence_event_timeout_count, | |
203 | err->elastic_buffer_overrun_error_count, | |
204 | err->advertised_receive_b2b_credit, | |
205 | err->current_receive_b2b_credit, | |
206 | err->advertised_transmit_b2b_credit, | |
207 | err->current_transmit_b2b_credit); | |
1da177e4 LT |
208 | } |
209 | ||
c41f8cbd SS |
210 | static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, u8 id, |
211 | struct fsf_link_down_info *link_down) | |
aef4a983 | 212 | { |
c41f8cbd | 213 | struct zfcp_adapter *adapter = req->adapter; |
698ec016 | 214 | |
c41f8cbd | 215 | if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED) |
ee69ab7a MS |
216 | return; |
217 | ||
218 | atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status); | |
219 | ||
c41f8cbd | 220 | if (!link_down) |
2f8f3ed5 | 221 | goto out; |
ee69ab7a | 222 | |
aef4a983 MS |
223 | switch (link_down->error_code) { |
224 | case FSF_PSQ_LINK_NO_LIGHT: | |
c41f8cbd SS |
225 | dev_warn(&req->adapter->ccw_device->dev, |
226 | "The local link is down: no light detected.\n"); | |
aef4a983 MS |
227 | break; |
228 | case FSF_PSQ_LINK_WRAP_PLUG: | |
c41f8cbd SS |
229 | dev_warn(&req->adapter->ccw_device->dev, |
230 | "The local link is down: wrap plug detected.\n"); | |
aef4a983 MS |
231 | break; |
232 | case FSF_PSQ_LINK_NO_FCP: | |
c41f8cbd | 233 | dev_warn(&req->adapter->ccw_device->dev, |
553448f6 CS |
234 | "The local link is down: " |
235 | "adjacent node on link does not support FCP.\n"); | |
aef4a983 MS |
236 | break; |
237 | case FSF_PSQ_LINK_FIRMWARE_UPDATE: | |
c41f8cbd | 238 | dev_warn(&req->adapter->ccw_device->dev, |
553448f6 CS |
239 | "The local link is down: " |
240 | "firmware update in progress.\n"); | |
241 | break; | |
aef4a983 | 242 | case FSF_PSQ_LINK_INVALID_WWPN: |
c41f8cbd | 243 | dev_warn(&req->adapter->ccw_device->dev, |
553448f6 CS |
244 | "The local link is down: " |
245 | "duplicate or invalid WWPN detected.\n"); | |
aef4a983 MS |
246 | break; |
247 | case FSF_PSQ_LINK_NO_NPIV_SUPPORT: | |
c41f8cbd | 248 | dev_warn(&req->adapter->ccw_device->dev, |
553448f6 CS |
249 | "The local link is down: " |
250 | "no support for NPIV by Fabric.\n"); | |
aef4a983 MS |
251 | break; |
252 | case FSF_PSQ_LINK_NO_FCP_RESOURCES: | |
c41f8cbd | 253 | dev_warn(&req->adapter->ccw_device->dev, |
553448f6 CS |
254 | "The local link is down: " |
255 | "out of resource in FCP daughtercard.\n"); | |
aef4a983 MS |
256 | break; |
257 | case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: | |
c41f8cbd | 258 | dev_warn(&req->adapter->ccw_device->dev, |
553448f6 CS |
259 | "The local link is down: " |
260 | "out of resource in Fabric.\n"); | |
aef4a983 MS |
261 | break; |
262 | case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: | |
c41f8cbd | 263 | dev_warn(&req->adapter->ccw_device->dev, |
553448f6 CS |
264 | "The local link is down: " |
265 | "unable to login to Fabric.\n"); | |
aef4a983 MS |
266 | break; |
267 | case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: | |
c41f8cbd | 268 | dev_warn(&req->adapter->ccw_device->dev, |
553448f6 | 269 | "WWPN assignment file corrupted on adapter.\n"); |
aef4a983 MS |
270 | break; |
271 | case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: | |
c41f8cbd | 272 | dev_warn(&req->adapter->ccw_device->dev, |
553448f6 | 273 | "Mode table corrupted on adapter.\n"); |
aef4a983 MS |
274 | break; |
275 | case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: | |
c41f8cbd | 276 | dev_warn(&req->adapter->ccw_device->dev, |
553448f6 | 277 | "No WWPN for assignment table on adapter.\n"); |
aef4a983 MS |
278 | break; |
279 | default: | |
c41f8cbd | 280 | dev_warn(&req->adapter->ccw_device->dev, |
553448f6 | 281 | "The local link to adapter is down.\n"); |
aef4a983 | 282 | } |
c41f8cbd SS |
283 | out: |
284 | zfcp_erp_adapter_failed(adapter, id, req); | |
aef4a983 MS |
285 | } |
286 | ||
c41f8cbd | 287 | static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req) |
1da177e4 | 288 | { |
c41f8cbd SS |
289 | struct zfcp_adapter *adapter = req->adapter; |
290 | struct fsf_status_read_buffer *sr_buf = req->data; | |
291 | struct fsf_link_down_info *ldi = | |
292 | (struct fsf_link_down_info *) &sr_buf->payload; | |
1da177e4 | 293 | |
c41f8cbd SS |
294 | switch (sr_buf->status_subtype) { |
295 | case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: | |
296 | dev_warn(&adapter->ccw_device->dev, | |
297 | "Physical link is down.\n"); | |
298 | zfcp_fsf_link_down_info_eval(req, 38, ldi); | |
1da177e4 | 299 | break; |
c41f8cbd SS |
300 | case FSF_STATUS_READ_SUB_FDISC_FAILED: |
301 | dev_warn(&adapter->ccw_device->dev, | |
302 | "Local link is down " | |
303 | "due to failed FDISC login.\n"); | |
304 | zfcp_fsf_link_down_info_eval(req, 39, ldi); | |
1da177e4 | 305 | break; |
c41f8cbd SS |
306 | case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE: |
307 | dev_warn(&adapter->ccw_device->dev, | |
308 | "Local link is down " | |
309 | "due to firmware update on adapter.\n"); | |
310 | zfcp_fsf_link_down_info_eval(req, 40, NULL); | |
311 | }; | |
312 | } | |
1da177e4 | 313 | |
c41f8cbd SS |
314 | static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) |
315 | { | |
316 | struct zfcp_adapter *adapter = req->adapter; | |
317 | struct fsf_status_read_buffer *sr_buf = req->data; | |
1da177e4 | 318 | |
c41f8cbd SS |
319 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
320 | zfcp_hba_dbf_event_fsf_unsol("dism", adapter, sr_buf); | |
321 | mempool_free(sr_buf, adapter->pool.data_status_read); | |
322 | zfcp_fsf_req_free(req); | |
323 | return; | |
324 | } | |
1da177e4 | 325 | |
c41f8cbd | 326 | zfcp_hba_dbf_event_fsf_unsol("read", adapter, sr_buf); |
1da177e4 | 327 | |
c41f8cbd SS |
328 | switch (sr_buf->status_type) { |
329 | case FSF_STATUS_READ_PORT_CLOSED: | |
330 | zfcp_fsf_status_read_port_closed(req); | |
1da177e4 | 331 | break; |
c41f8cbd SS |
332 | case FSF_STATUS_READ_INCOMING_ELS: |
333 | zfcp_fc_incoming_els(req); | |
1da177e4 | 334 | break; |
c41f8cbd | 335 | case FSF_STATUS_READ_SENSE_DATA_AVAIL: |
1da177e4 | 336 | break; |
c41f8cbd SS |
337 | case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: |
338 | zfcp_fsf_bit_error_threshold(req); | |
1da177e4 | 339 | break; |
c41f8cbd SS |
340 | case FSF_STATUS_READ_LINK_DOWN: |
341 | zfcp_fsf_status_read_link_down(req); | |
342 | break; | |
343 | case FSF_STATUS_READ_LINK_UP: | |
344 | dev_info(&adapter->ccw_device->dev, | |
345 | "Local link was replugged.\n"); | |
346 | /* All ports should be marked as ready to run again */ | |
347 | zfcp_erp_modify_adapter_status(adapter, 30, NULL, | |
348 | ZFCP_STATUS_COMMON_RUNNING, | |
349 | ZFCP_SET); | |
350 | zfcp_erp_adapter_reopen(adapter, | |
351 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
352 | ZFCP_STATUS_COMMON_ERP_FAILED, | |
353 | 102, req); | |
354 | break; | |
355 | case FSF_STATUS_READ_NOTIFICATION_LOST: | |
356 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED) | |
357 | zfcp_erp_adapter_access_changed(adapter, 135, req); | |
358 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS) | |
359 | schedule_work(&adapter->scan_work); | |
360 | break; | |
361 | case FSF_STATUS_READ_CFDC_UPDATED: | |
362 | zfcp_erp_adapter_access_changed(adapter, 136, req); | |
363 | break; | |
364 | case FSF_STATUS_READ_FEATURE_UPDATE_ALERT: | |
365 | adapter->adapter_features = sr_buf->payload.word[0]; | |
1da177e4 | 366 | break; |
1da177e4 LT |
367 | } |
368 | ||
c41f8cbd SS |
369 | mempool_free(sr_buf, adapter->pool.data_status_read); |
370 | zfcp_fsf_req_free(req); | |
1da177e4 | 371 | |
c41f8cbd SS |
372 | atomic_inc(&adapter->stat_miss); |
373 | schedule_work(&adapter->stat_work); | |
374 | } | |
1da177e4 | 375 | |
c41f8cbd SS |
376 | static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req) |
377 | { | |
378 | switch (req->qtcb->header.fsf_status_qual.word[0]) { | |
379 | case FSF_SQ_FCP_RSP_AVAILABLE: | |
380 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
381 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
382 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
383 | return; | |
384 | case FSF_SQ_COMMAND_ABORTED: | |
385 | req->status |= ZFCP_STATUS_FSFREQ_ABORTED; | |
386 | break; | |
387 | case FSF_SQ_NO_RECOM: | |
388 | dev_err(&req->adapter->ccw_device->dev, | |
389 | "No recommendation could be given for a " | |
390 | "problem on the adapter.\n"); | |
391 | zfcp_erp_adapter_shutdown(req->adapter, 0, 121, req); | |
392 | break; | |
393 | } | |
394 | /* all non-return stats set FSFREQ_ERROR*/ | |
395 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
396 | } |
397 | ||
c41f8cbd | 398 | static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req) |
1da177e4 | 399 | { |
c41f8cbd SS |
400 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
401 | return; | |
1da177e4 | 402 | |
c41f8cbd SS |
403 | switch (req->qtcb->header.fsf_status) { |
404 | case FSF_UNKNOWN_COMMAND: | |
405 | dev_err(&req->adapter->ccw_device->dev, | |
406 | "Command issued by the device driver (0x%x) is " | |
407 | "not known by the adapter.\n", | |
408 | req->qtcb->header.fsf_command); | |
409 | zfcp_erp_adapter_shutdown(req->adapter, 0, 120, req); | |
410 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
411 | break; | |
412 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
413 | zfcp_fsf_fsfstatus_qual_eval(req); | |
414 | break; | |
415 | } | |
416 | } | |
1da177e4 | 417 | |
c41f8cbd SS |
418 | static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) |
419 | { | |
420 | struct zfcp_adapter *adapter = req->adapter; | |
421 | struct fsf_qtcb *qtcb = req->qtcb; | |
422 | union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual; | |
1da177e4 | 423 | |
c41f8cbd | 424 | zfcp_hba_dbf_event_fsf_response(req); |
1da177e4 | 425 | |
c41f8cbd SS |
426 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
427 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
428 | ZFCP_STATUS_FSFREQ_RETRY; /* only for SCSI cmnds. */ | |
429 | return; | |
430 | } | |
1da177e4 | 431 | |
c41f8cbd SS |
432 | switch (qtcb->prefix.prot_status) { |
433 | case FSF_PROT_GOOD: | |
434 | case FSF_PROT_FSF_STATUS_PRESENTED: | |
435 | return; | |
436 | case FSF_PROT_QTCB_VERSION_ERROR: | |
437 | dev_err(&adapter->ccw_device->dev, | |
438 | "The QTCB version requested by zfcp (0x%x) is not " | |
439 | "supported by the FCP adapter (lowest supported " | |
440 | "0x%x, highest supported 0x%x).\n", | |
441 | FSF_QTCB_CURRENT_VERSION, psq->word[0], | |
442 | psq->word[1]); | |
443 | zfcp_erp_adapter_shutdown(adapter, 0, 117, req); | |
444 | break; | |
445 | case FSF_PROT_ERROR_STATE: | |
446 | case FSF_PROT_SEQ_NUMB_ERROR: | |
447 | zfcp_erp_adapter_reopen(adapter, 0, 98, req); | |
448 | req->status |= ZFCP_STATUS_FSFREQ_RETRY; | |
449 | break; | |
450 | case FSF_PROT_UNSUPP_QTCB_TYPE: | |
451 | dev_err(&adapter->ccw_device->dev, | |
452 | "Packet header type used by the device driver is " | |
453 | "incompatible with that used on the adapter.\n"); | |
454 | zfcp_erp_adapter_shutdown(adapter, 0, 118, req); | |
455 | break; | |
456 | case FSF_PROT_HOST_CONNECTION_INITIALIZING: | |
457 | atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT, | |
458 | &adapter->status); | |
459 | break; | |
460 | case FSF_PROT_DUPLICATE_REQUEST_ID: | |
461 | dev_err(&adapter->ccw_device->dev, | |
462 | "The request identifier 0x%Lx is ambiguous.\n", | |
463 | (unsigned long long)qtcb->bottom.support.req_handle); | |
464 | zfcp_erp_adapter_shutdown(adapter, 0, 78, req); | |
465 | break; | |
466 | case FSF_PROT_LINK_DOWN: | |
467 | zfcp_fsf_link_down_info_eval(req, 37, &psq->link_down_info); | |
468 | /* FIXME: reopening adapter now? better wait for link up */ | |
469 | zfcp_erp_adapter_reopen(adapter, 0, 79, req); | |
470 | break; | |
471 | case FSF_PROT_REEST_QUEUE: | |
472 | /* All ports should be marked as ready to run again */ | |
473 | zfcp_erp_modify_adapter_status(adapter, 28, NULL, | |
474 | ZFCP_STATUS_COMMON_RUNNING, | |
475 | ZFCP_SET); | |
476 | zfcp_erp_adapter_reopen(adapter, | |
477 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
478 | ZFCP_STATUS_COMMON_ERP_FAILED, 99, req); | |
479 | break; | |
480 | default: | |
481 | dev_err(&adapter->ccw_device->dev, | |
482 | "Transfer protocol status information" | |
483 | "provided by the adapter (0x%x) " | |
484 | "is not compatible with the device driver.\n", | |
485 | qtcb->prefix.prot_status); | |
486 | zfcp_erp_adapter_shutdown(adapter, 0, 119, req); | |
487 | } | |
488 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
489 | } |
490 | ||
c41f8cbd SS |
491 | /** |
492 | * zfcp_fsf_req_complete - process completion of a FSF request | |
493 | * @fsf_req: The FSF request that has been completed. | |
494 | * | |
495 | * When a request has been completed either from the FCP adapter, | |
496 | * or it has been dismissed due to a queue shutdown, this function | |
497 | * is called to process the completion status and trigger further | |
498 | * events related to the FSF request. | |
499 | */ | |
500 | void zfcp_fsf_req_complete(struct zfcp_fsf_req *req) | |
1da177e4 | 501 | { |
c41f8cbd SS |
502 | if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) { |
503 | zfcp_fsf_status_read_handler(req); | |
504 | return; | |
505 | } | |
1da177e4 | 506 | |
c41f8cbd SS |
507 | del_timer(&req->timer); |
508 | zfcp_fsf_protstatus_eval(req); | |
509 | zfcp_fsf_fsfstatus_eval(req); | |
510 | req->handler(req); | |
1da177e4 | 511 | |
c41f8cbd | 512 | if (req->erp_action) |
287ac01a | 513 | zfcp_erp_notify(req->erp_action, 0); |
c41f8cbd | 514 | req->status |= ZFCP_STATUS_FSFREQ_COMPLETED; |
1da177e4 | 515 | |
c41f8cbd SS |
516 | if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP)) |
517 | zfcp_fsf_req_free(req); | |
518 | else | |
519 | /* notify initiator waiting for the requests completion */ | |
520 | /* | |
521 | * FIXME: Race! We must not access fsf_req here as it might have been | |
522 | * cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED | |
523 | * flag. It's an improbable case. But, we have the same paranoia for | |
524 | * the cleanup flag already. | |
525 | * Might better be handled using complete()? | |
526 | * (setting the flag and doing wakeup ought to be atomic | |
527 | * with regard to checking the flag as long as waitqueue is | |
528 | * part of the to be released structure) | |
529 | */ | |
530 | wake_up(&req->completion_wq); | |
531 | } | |
1da177e4 | 532 | |
c41f8cbd SS |
533 | static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req) |
534 | { | |
535 | struct fsf_qtcb_bottom_config *bottom; | |
536 | struct zfcp_adapter *adapter = req->adapter; | |
537 | struct Scsi_Host *shost = adapter->scsi_host; | |
1da177e4 | 538 | |
c41f8cbd | 539 | bottom = &req->qtcb->bottom.config; |
1da177e4 | 540 | |
c41f8cbd SS |
541 | if (req->data) |
542 | memcpy(req->data, bottom, sizeof(*bottom)); | |
543 | ||
544 | fc_host_node_name(shost) = bottom->nport_serv_param.wwnn; | |
545 | fc_host_port_name(shost) = bottom->nport_serv_param.wwpn; | |
546 | fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK; | |
547 | fc_host_speed(shost) = bottom->fc_link_speed; | |
548 | fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3; | |
549 | ||
550 | adapter->hydra_version = bottom->adapter_type; | |
551 | adapter->timer_ticks = bottom->timer_interval; | |
552 | ||
553 | if (fc_host_permanent_port_name(shost) == -1) | |
554 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
555 | ||
556 | switch (bottom->fc_topology) { | |
557 | case FSF_TOPO_P2P: | |
558 | adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK; | |
559 | adapter->peer_wwpn = bottom->plogi_payload.wwpn; | |
560 | adapter->peer_wwnn = bottom->plogi_payload.wwnn; | |
561 | fc_host_port_type(shost) = FC_PORTTYPE_PTP; | |
562 | if (req->erp_action) | |
563 | dev_info(&adapter->ccw_device->dev, | |
564 | "Point-to-Point fibrechannel " | |
565 | "configuration detected.\n"); | |
566 | break; | |
567 | case FSF_TOPO_FABRIC: | |
568 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
569 | if (req->erp_action) | |
570 | dev_info(&adapter->ccw_device->dev, | |
571 | "Switched fabric fibrechannel " | |
572 | "network detected.\n"); | |
573 | break; | |
574 | case FSF_TOPO_AL: | |
575 | fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; | |
576 | dev_err(&adapter->ccw_device->dev, | |
577 | "Unsupported arbitrated loop fibrechannel " | |
578 | "topology detected, shutting down " | |
579 | "adapter.\n"); | |
580 | zfcp_erp_adapter_shutdown(adapter, 0, 127, req); | |
581 | return -EIO; | |
582 | default: | |
583 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; | |
584 | dev_err(&adapter->ccw_device->dev, | |
585 | "The fibrechannel topology reported by the" | |
586 | " adapter is not known by the zfcp driver," | |
587 | " shutting down adapter.\n"); | |
588 | zfcp_erp_adapter_shutdown(adapter, 0, 128, req); | |
589 | return -EIO; | |
1da177e4 | 590 | } |
c41f8cbd | 591 | |
1da177e4 LT |
592 | return 0; |
593 | } | |
594 | ||
c41f8cbd | 595 | static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) |
553448f6 CS |
596 | { |
597 | struct zfcp_adapter *adapter = req->adapter; | |
c41f8cbd SS |
598 | struct fsf_qtcb *qtcb = req->qtcb; |
599 | struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config; | |
600 | struct Scsi_Host *shost = adapter->scsi_host; | |
553448f6 | 601 | |
c41f8cbd SS |
602 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
603 | return; | |
1da177e4 | 604 | |
c41f8cbd SS |
605 | adapter->fsf_lic_version = bottom->lic_version; |
606 | adapter->adapter_features = bottom->adapter_features; | |
607 | adapter->connection_features = bottom->connection_features; | |
608 | adapter->peer_wwpn = 0; | |
609 | adapter->peer_wwnn = 0; | |
610 | adapter->peer_d_id = 0; | |
8a36e453 | 611 | |
c41f8cbd SS |
612 | switch (qtcb->header.fsf_status) { |
613 | case FSF_GOOD: | |
614 | if (zfcp_fsf_exchange_config_evaluate(req)) | |
615 | return; | |
1da177e4 | 616 | |
c41f8cbd SS |
617 | if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { |
618 | dev_err(&adapter->ccw_device->dev, | |
619 | "Maximum QTCB size (%d bytes) allowed by " | |
620 | "the adapter is lower than the minimum " | |
621 | "required by the driver (%ld bytes).\n", | |
622 | bottom->max_qtcb_size, | |
623 | sizeof(struct fsf_qtcb)); | |
624 | zfcp_erp_adapter_shutdown(adapter, 0, 129, req); | |
625 | return; | |
626 | } | |
627 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, | |
628 | &adapter->status); | |
1da177e4 | 629 | break; |
c41f8cbd SS |
630 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
631 | fc_host_node_name(shost) = 0; | |
632 | fc_host_port_name(shost) = 0; | |
633 | fc_host_port_id(shost) = 0; | |
634 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; | |
635 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; | |
636 | adapter->hydra_version = 0; | |
1da177e4 | 637 | |
c41f8cbd SS |
638 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, |
639 | &adapter->status); | |
1da177e4 | 640 | |
c41f8cbd SS |
641 | zfcp_fsf_link_down_info_eval(req, 42, |
642 | &qtcb->header.fsf_status_qual.link_down_info); | |
1da177e4 | 643 | break; |
c41f8cbd SS |
644 | default: |
645 | zfcp_erp_adapter_shutdown(adapter, 0, 130, req); | |
646 | return; | |
647 | } | |
1da177e4 | 648 | |
c41f8cbd SS |
649 | if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) { |
650 | adapter->hardware_version = bottom->hardware_version; | |
651 | memcpy(fc_host_serial_number(shost), bottom->serial_number, | |
652 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
653 | EBCASC(fc_host_serial_number(shost), | |
654 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
655 | } | |
1da177e4 | 656 | |
c41f8cbd SS |
657 | if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) { |
658 | dev_err(&adapter->ccw_device->dev, | |
659 | "The adapter only supports newer control block " | |
660 | "versions, try updated device driver.\n"); | |
661 | zfcp_erp_adapter_shutdown(adapter, 0, 125, req); | |
662 | return; | |
663 | } | |
664 | if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) { | |
665 | dev_err(&adapter->ccw_device->dev, | |
666 | "The adapter only supports older control block " | |
667 | "versions, consider a microcode upgrade.\n"); | |
668 | zfcp_erp_adapter_shutdown(adapter, 0, 126, req); | |
669 | } | |
670 | } | |
1da177e4 | 671 | |
c41f8cbd SS |
672 | static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req) |
673 | { | |
674 | struct zfcp_adapter *adapter = req->adapter; | |
675 | struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port; | |
676 | struct Scsi_Host *shost = adapter->scsi_host; | |
1da177e4 | 677 | |
c41f8cbd SS |
678 | if (req->data) |
679 | memcpy(req->data, bottom, sizeof(*bottom)); | |
9eb69aff | 680 | |
c41f8cbd SS |
681 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) |
682 | fc_host_permanent_port_name(shost) = bottom->wwpn; | |
683 | else | |
684 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
685 | fc_host_maxframe_size(shost) = bottom->maximum_frame_size; | |
686 | fc_host_supported_speeds(shost) = bottom->supported_speed; | |
687 | } | |
1da177e4 | 688 | |
c41f8cbd SS |
689 | static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) |
690 | { | |
691 | struct zfcp_adapter *adapter = req->adapter; | |
692 | struct fsf_qtcb *qtcb = req->qtcb; | |
693 | ||
694 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
695 | return; | |
696 | ||
697 | switch (qtcb->header.fsf_status) { | |
698 | case FSF_GOOD: | |
699 | zfcp_fsf_exchange_port_evaluate(req); | |
700 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status); | |
701 | break; | |
702 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: | |
703 | zfcp_fsf_exchange_port_evaluate(req); | |
704 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status); | |
705 | zfcp_fsf_link_down_info_eval(req, 43, | |
706 | &qtcb->header.fsf_status_qual.link_down_info); | |
aef4a983 | 707 | break; |
1da177e4 | 708 | } |
c41f8cbd | 709 | } |
d26ab06e | 710 | |
c41f8cbd SS |
711 | static int zfcp_fsf_sbal_check(struct zfcp_qdio_queue *queue) |
712 | { | |
d4538817 | 713 | spin_lock_bh(&queue->lock); |
c41f8cbd SS |
714 | if (atomic_read(&queue->count)) |
715 | return 1; | |
d4538817 | 716 | spin_unlock_bh(&queue->lock); |
c41f8cbd | 717 | return 0; |
1da177e4 LT |
718 | } |
719 | ||
c41f8cbd SS |
720 | static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter) |
721 | { | |
722 | long ret; | |
723 | struct zfcp_qdio_queue *req_q = &adapter->req_q; | |
724 | ||
d4538817 | 725 | spin_unlock_bh(&req_q->lock); |
c41f8cbd SS |
726 | ret = wait_event_interruptible_timeout(adapter->request_wq, |
727 | zfcp_fsf_sbal_check(req_q), 5 * HZ); | |
728 | if (ret > 0) | |
729 | return 0; | |
730 | ||
d4538817 | 731 | spin_lock_bh(&req_q->lock); |
c41f8cbd SS |
732 | return -EIO; |
733 | } | |
734 | ||
735 | static struct zfcp_fsf_req *zfcp_fsf_alloc_noqtcb(mempool_t *pool) | |
736 | { | |
737 | struct zfcp_fsf_req *req; | |
738 | req = mempool_alloc(pool, GFP_ATOMIC); | |
739 | if (!req) | |
740 | return NULL; | |
741 | memset(req, 0, sizeof(*req)); | |
742 | return req; | |
743 | } | |
744 | ||
745 | static struct zfcp_fsf_req *zfcp_fsf_alloc_qtcb(mempool_t *pool) | |
746 | { | |
747 | struct zfcp_fsf_req_qtcb *qtcb; | |
748 | ||
749 | if (likely(pool)) | |
750 | qtcb = mempool_alloc(pool, GFP_ATOMIC); | |
751 | else | |
752 | qtcb = kmem_cache_alloc(zfcp_data.fsf_req_qtcb_cache, | |
753 | GFP_ATOMIC); | |
754 | if (unlikely(!qtcb)) | |
755 | return NULL; | |
756 | ||
757 | memset(qtcb, 0, sizeof(*qtcb)); | |
758 | qtcb->fsf_req.qtcb = &qtcb->qtcb; | |
759 | qtcb->fsf_req.pool = pool; | |
760 | ||
761 | return &qtcb->fsf_req; | |
762 | } | |
763 | ||
764 | static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter, | |
765 | u32 fsf_cmd, int req_flags, | |
766 | mempool_t *pool) | |
1da177e4 LT |
767 | { |
768 | volatile struct qdio_buffer_element *sbale; | |
1da177e4 | 769 | |
c41f8cbd SS |
770 | struct zfcp_fsf_req *req; |
771 | struct zfcp_qdio_queue *req_q = &adapter->req_q; | |
951f746f | 772 | |
c41f8cbd SS |
773 | if (req_flags & ZFCP_REQ_NO_QTCB) |
774 | req = zfcp_fsf_alloc_noqtcb(pool); | |
775 | else | |
776 | req = zfcp_fsf_alloc_qtcb(pool); | |
1da177e4 | 777 | |
c41f8cbd SS |
778 | if (unlikely(!req)) |
779 | return ERR_PTR(-EIO); | |
1da177e4 | 780 | |
c41f8cbd SS |
781 | if (adapter->req_no == 0) |
782 | adapter->req_no++; | |
1da177e4 | 783 | |
c41f8cbd SS |
784 | INIT_LIST_HEAD(&req->list); |
785 | init_timer(&req->timer); | |
786 | init_waitqueue_head(&req->completion_wq); | |
1da177e4 | 787 | |
c41f8cbd SS |
788 | req->adapter = adapter; |
789 | req->fsf_command = fsf_cmd; | |
790 | req->req_id = adapter->req_no++; | |
791 | req->sbal_number = 1; | |
792 | req->sbal_first = req_q->first; | |
793 | req->sbal_last = req_q->first; | |
794 | req->sbale_curr = 1; | |
795 | ||
796 | sbale = zfcp_qdio_sbale_req(req); | |
797 | sbale[0].addr = (void *) req->req_id; | |
798 | sbale[0].flags |= SBAL_FLAGS0_COMMAND; | |
799 | ||
800 | if (likely(req->qtcb)) { | |
801 | req->qtcb->prefix.req_seq_no = req->adapter->fsf_req_seq_no; | |
802 | req->qtcb->prefix.req_id = req->req_id; | |
803 | req->qtcb->prefix.ulp_info = 26; | |
804 | req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command]; | |
805 | req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION; | |
806 | req->qtcb->header.req_handle = req->req_id; | |
807 | req->qtcb->header.fsf_command = req->fsf_command; | |
808 | req->seq_no = adapter->fsf_req_seq_no; | |
809 | req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; | |
810 | sbale[1].addr = (void *) req->qtcb; | |
811 | sbale[1].length = sizeof(struct fsf_qtcb); | |
812 | } | |
813 | ||
814 | if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) { | |
815 | zfcp_fsf_req_free(req); | |
816 | return ERR_PTR(-EIO); | |
817 | } | |
951f746f | 818 | |
c41f8cbd SS |
819 | if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP)) |
820 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; | |
1da177e4 | 821 | |
c41f8cbd | 822 | return req; |
1da177e4 LT |
823 | } |
824 | ||
c41f8cbd SS |
825 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) |
826 | { | |
827 | struct zfcp_adapter *adapter = req->adapter; | |
828 | struct zfcp_qdio_queue *req_q = &adapter->req_q; | |
829 | int idx; | |
830 | ||
831 | /* put allocated FSF request into hash table */ | |
832 | spin_lock(&adapter->req_list_lock); | |
833 | idx = zfcp_reqlist_hash(req->req_id); | |
834 | list_add_tail(&req->list, &adapter->req_list[idx]); | |
835 | spin_unlock(&adapter->req_list_lock); | |
836 | ||
837 | req->issued = get_clock(); | |
838 | if (zfcp_qdio_send(req)) { | |
839 | /* Queues are down..... */ | |
840 | del_timer(&req->timer); | |
841 | spin_lock(&adapter->req_list_lock); | |
842 | zfcp_reqlist_remove(adapter, req); | |
843 | spin_unlock(&adapter->req_list_lock); | |
844 | /* undo changes in request queue made for this request */ | |
845 | atomic_add(req->sbal_number, &req_q->count); | |
846 | req_q->first -= req->sbal_number; | |
847 | req_q->first += QDIO_MAX_BUFFERS_PER_Q; | |
848 | req_q->first %= QDIO_MAX_BUFFERS_PER_Q; /* wrap */ | |
849 | zfcp_erp_adapter_reopen(adapter, 0, 116, req); | |
850 | return -EIO; | |
851 | } | |
852 | ||
853 | /* Don't increase for unsolicited status */ | |
854 | if (req->qtcb) | |
855 | adapter->fsf_req_seq_no++; | |
856 | ||
857 | return 0; | |
858 | } | |
859 | ||
860 | /** | |
861 | * zfcp_fsf_status_read - send status read request | |
862 | * @adapter: pointer to struct zfcp_adapter | |
863 | * @req_flags: request flags | |
864 | * Returns: 0 on success, ERROR otherwise | |
1da177e4 | 865 | */ |
c41f8cbd | 866 | int zfcp_fsf_status_read(struct zfcp_adapter *adapter) |
1da177e4 | 867 | { |
c41f8cbd SS |
868 | struct zfcp_fsf_req *req; |
869 | struct fsf_status_read_buffer *sr_buf; | |
870 | volatile struct qdio_buffer_element *sbale; | |
871 | int retval = -EIO; | |
1da177e4 | 872 | |
d4538817 | 873 | spin_lock_bh(&adapter->req_q.lock); |
c41f8cbd SS |
874 | if (zfcp_fsf_req_sbal_get(adapter)) |
875 | goto out; | |
876 | ||
877 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS, | |
878 | ZFCP_REQ_NO_QTCB, | |
879 | adapter->pool.fsf_req_status_read); | |
880 | if (unlikely(IS_ERR(req))) { | |
881 | retval = PTR_ERR(req); | |
882 | goto out; | |
1da177e4 LT |
883 | } |
884 | ||
c41f8cbd SS |
885 | sbale = zfcp_qdio_sbale_req(req); |
886 | sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS; | |
887 | sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY; | |
888 | req->sbale_curr = 2; | |
889 | ||
890 | sr_buf = mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC); | |
891 | if (!sr_buf) { | |
892 | retval = -ENOMEM; | |
893 | goto failed_buf; | |
894 | } | |
895 | memset(sr_buf, 0, sizeof(*sr_buf)); | |
896 | req->data = sr_buf; | |
897 | sbale = zfcp_qdio_sbale_curr(req); | |
898 | sbale->addr = (void *) sr_buf; | |
899 | sbale->length = sizeof(*sr_buf); | |
059c97d0 | 900 | |
c41f8cbd SS |
901 | retval = zfcp_fsf_req_send(req); |
902 | if (retval) | |
903 | goto failed_req_send; | |
1da177e4 | 904 | |
c41f8cbd SS |
905 | goto out; |
906 | ||
907 | failed_req_send: | |
908 | mempool_free(sr_buf, adapter->pool.data_status_read); | |
909 | failed_buf: | |
910 | zfcp_fsf_req_free(req); | |
911 | zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL); | |
912 | out: | |
d4538817 | 913 | spin_unlock_bh(&adapter->req_q.lock); |
c41f8cbd SS |
914 | return retval; |
915 | } | |
916 | ||
917 | static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req) | |
918 | { | |
919 | struct zfcp_unit *unit = req->data; | |
920 | union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual; | |
921 | ||
922 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
923 | return; | |
924 | ||
925 | switch (req->qtcb->header.fsf_status) { | |
1da177e4 | 926 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd | 927 | if (fsq->word[0] == fsq->word[1]) { |
9467a9b3 | 928 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 104, |
c41f8cbd SS |
929 | req); |
930 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
931 | } |
932 | break; | |
1da177e4 | 933 | case FSF_LUN_HANDLE_NOT_VALID: |
c41f8cbd SS |
934 | if (fsq->word[0] == fsq->word[1]) { |
935 | zfcp_erp_port_reopen(unit->port, 0, 105, req); | |
936 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
937 | } |
938 | break; | |
1da177e4 | 939 | case FSF_FCP_COMMAND_DOES_NOT_EXIST: |
c41f8cbd | 940 | req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED; |
1da177e4 | 941 | break; |
1da177e4 | 942 | case FSF_PORT_BOXED: |
c41f8cbd SS |
943 | zfcp_erp_port_boxed(unit->port, 47, req); |
944 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
945 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 946 | break; |
1da177e4 | 947 | case FSF_LUN_BOXED: |
c41f8cbd SS |
948 | zfcp_erp_unit_boxed(unit, 48, req); |
949 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
950 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 951 | break; |
1da177e4 | 952 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 953 | switch (fsq->word[0]) { |
1da177e4 | 954 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
65a8d4e1 | 955 | zfcp_test_link(unit->port); |
1da177e4 | 956 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 957 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 958 | break; |
1da177e4 LT |
959 | } |
960 | break; | |
1da177e4 | 961 | case FSF_GOOD: |
c41f8cbd | 962 | req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED; |
1da177e4 | 963 | break; |
1da177e4 | 964 | } |
1da177e4 LT |
965 | } |
966 | ||
967 | /** | |
c41f8cbd SS |
968 | * zfcp_fsf_abort_fcp_command - abort running SCSI command |
969 | * @old_req_id: unsigned long | |
970 | * @adapter: pointer to struct zfcp_adapter | |
971 | * @unit: pointer to struct zfcp_unit | |
972 | * @req_flags: integer specifying the request flags | |
973 | * Returns: pointer to struct zfcp_fsf_req | |
974 | * | |
975 | * FIXME(design): should be watched by a timeout !!! | |
1da177e4 | 976 | */ |
1da177e4 | 977 | |
c41f8cbd SS |
978 | struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id, |
979 | struct zfcp_adapter *adapter, | |
980 | struct zfcp_unit *unit, | |
981 | int req_flags) | |
1da177e4 LT |
982 | { |
983 | volatile struct qdio_buffer_element *sbale; | |
c41f8cbd | 984 | struct zfcp_fsf_req *req = NULL; |
8a36e453 | 985 | |
c41f8cbd SS |
986 | spin_lock(&adapter->req_q.lock); |
987 | if (!atomic_read(&adapter->req_q.count)) | |
988 | goto out; | |
989 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND, | |
990 | req_flags, adapter->pool.fsf_req_abort); | |
991 | if (unlikely(IS_ERR(req))) | |
992 | goto out; | |
2abbe866 | 993 | |
c41f8cbd SS |
994 | if (unlikely(!(atomic_read(&unit->status) & |
995 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
996 | goto out_error_free; | |
1da177e4 | 997 | |
c41f8cbd SS |
998 | sbale = zfcp_qdio_sbale_req(req); |
999 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1000 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1001 | |
c41f8cbd SS |
1002 | req->data = unit; |
1003 | req->handler = zfcp_fsf_abort_fcp_command_handler; | |
1004 | req->qtcb->header.lun_handle = unit->handle; | |
1005 | req->qtcb->header.port_handle = unit->port->handle; | |
1006 | req->qtcb->bottom.support.req_handle = (u64) old_req_id; | |
1007 | ||
1008 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); | |
1009 | if (!zfcp_fsf_req_send(req)) | |
1010 | goto out; | |
1011 | ||
1012 | out_error_free: | |
1013 | zfcp_fsf_req_free(req); | |
1014 | req = NULL; | |
1015 | out: | |
1016 | spin_unlock(&adapter->req_q.lock); | |
1017 | return req; | |
1da177e4 LT |
1018 | } |
1019 | ||
c41f8cbd | 1020 | static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1021 | { |
c41f8cbd SS |
1022 | struct zfcp_adapter *adapter = req->adapter; |
1023 | struct zfcp_send_ct *send_ct = req->data; | |
1024 | struct zfcp_port *port = send_ct->port; | |
1025 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1026 | |
c41f8cbd | 1027 | send_ct->status = -EINVAL; |
1da177e4 | 1028 | |
c41f8cbd | 1029 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
1030 | goto skip_fsfstatus; |
1031 | ||
1da177e4 | 1032 | switch (header->fsf_status) { |
1da177e4 | 1033 | case FSF_GOOD: |
c41f8cbd SS |
1034 | zfcp_san_dbf_event_ct_response(req); |
1035 | send_ct->status = 0; | |
1da177e4 | 1036 | break; |
1da177e4 | 1037 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 1038 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 1039 | break; |
1da177e4 | 1040 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1041 | switch (header->fsf_status_qual.word[0]){ |
1042 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1043 | zfcp_test_link(port); |
1da177e4 | 1044 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1045 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1046 | break; |
1da177e4 LT |
1047 | } |
1048 | break; | |
1da177e4 | 1049 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1050 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1051 | break; |
1da177e4 | 1052 | case FSF_PORT_BOXED: |
c41f8cbd SS |
1053 | zfcp_erp_port_boxed(port, 49, req); |
1054 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
1055 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 1056 | break; |
c41f8cbd SS |
1057 | case FSF_PORT_HANDLE_NOT_VALID: |
1058 | zfcp_erp_adapter_reopen(adapter, 0, 106, req); | |
1059 | case FSF_GENERIC_COMMAND_REJECTED: | |
1da177e4 | 1060 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1061 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1062 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1063 | case FSF_SBAL_MISMATCH: |
c41f8cbd | 1064 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1065 | break; |
1066 | } | |
1067 | ||
1068 | skip_fsfstatus: | |
c41f8cbd | 1069 | if (send_ct->handler) |
1da177e4 | 1070 | send_ct->handler(send_ct->handler_data); |
c41f8cbd | 1071 | } |
1da177e4 | 1072 | |
c41f8cbd SS |
1073 | static int zfcp_fsf_setup_sbals(struct zfcp_fsf_req *req, |
1074 | struct scatterlist *sg_req, | |
1075 | struct scatterlist *sg_resp, int max_sbals) | |
1076 | { | |
1077 | int bytes; | |
1078 | ||
1079 | bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, | |
1080 | sg_req, max_sbals); | |
1081 | if (bytes <= 0) | |
1082 | return -ENOMEM; | |
1083 | req->qtcb->bottom.support.req_buf_length = bytes; | |
1084 | req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; | |
1085 | ||
1086 | bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, | |
1087 | sg_resp, max_sbals); | |
1088 | if (bytes <= 0) | |
1089 | return -ENOMEM; | |
1090 | req->qtcb->bottom.support.resp_buf_length = bytes; | |
1091 | ||
1092 | return 0; | |
1da177e4 LT |
1093 | } |
1094 | ||
1095 | /** | |
c41f8cbd SS |
1096 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) |
1097 | * @ct: pointer to struct zfcp_send_ct with data for request | |
1098 | * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req | |
1099 | * @erp_action: if non-null the Generic Service request sent within ERP | |
1da177e4 | 1100 | */ |
c41f8cbd SS |
1101 | int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, |
1102 | struct zfcp_erp_action *erp_action) | |
1da177e4 | 1103 | { |
c41f8cbd SS |
1104 | struct zfcp_port *port = ct->port; |
1105 | struct zfcp_adapter *adapter = port->adapter; | |
1106 | struct zfcp_fsf_req *req; | |
1107 | int ret = -EIO; | |
1da177e4 | 1108 | |
d4538817 | 1109 | spin_lock_bh(&adapter->req_q.lock); |
c41f8cbd SS |
1110 | if (zfcp_fsf_req_sbal_get(adapter)) |
1111 | goto out; | |
1da177e4 | 1112 | |
c41f8cbd SS |
1113 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC, |
1114 | ZFCP_REQ_AUTO_CLEANUP, pool); | |
1115 | if (unlikely(IS_ERR(req))) { | |
1116 | ret = PTR_ERR(req); | |
1117 | goto out; | |
3f0ca62a CS |
1118 | } |
1119 | ||
c41f8cbd SS |
1120 | ret = zfcp_fsf_setup_sbals(req, ct->req, ct->resp, |
1121 | FSF_MAX_SBALS_PER_REQ); | |
553448f6 | 1122 | if (ret) |
1da177e4 | 1123 | goto failed_send; |
1da177e4 | 1124 | |
c41f8cbd SS |
1125 | req->handler = zfcp_fsf_send_ct_handler; |
1126 | req->qtcb->header.port_handle = port->handle; | |
1127 | req->qtcb->bottom.support.service_class = FSF_CLASS_3; | |
1128 | req->qtcb->bottom.support.timeout = ct->timeout; | |
1129 | req->data = ct; | |
1130 | ||
1131 | zfcp_san_dbf_event_ct_request(req); | |
1132 | ||
1133 | if (erp_action) { | |
1134 | erp_action->fsf_req = req; | |
1135 | req->erp_action = erp_action; | |
287ac01a | 1136 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
1137 | } else |
1138 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1da177e4 | 1139 | |
c41f8cbd SS |
1140 | ret = zfcp_fsf_req_send(req); |
1141 | if (ret) | |
1142 | goto failed_send; | |
1da177e4 | 1143 | |
c41f8cbd | 1144 | goto out; |
1da177e4 | 1145 | |
c41f8cbd SS |
1146 | failed_send: |
1147 | zfcp_fsf_req_free(req); | |
1148 | if (erp_action) | |
1149 | erp_action->fsf_req = NULL; | |
1150 | out: | |
d4538817 | 1151 | spin_unlock_bh(&adapter->req_q.lock); |
c41f8cbd | 1152 | return ret; |
1da177e4 LT |
1153 | } |
1154 | ||
c41f8cbd | 1155 | static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1156 | { |
c41f8cbd SS |
1157 | struct zfcp_send_els *send_els = req->data; |
1158 | struct zfcp_port *port = send_els->port; | |
1159 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1160 | |
c41f8cbd | 1161 | send_els->status = -EINVAL; |
1da177e4 | 1162 | |
c41f8cbd | 1163 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
1164 | goto skip_fsfstatus; |
1165 | ||
1166 | switch (header->fsf_status) { | |
1da177e4 | 1167 | case FSF_GOOD: |
c41f8cbd SS |
1168 | zfcp_san_dbf_event_els_response(req); |
1169 | send_els->status = 0; | |
1da177e4 | 1170 | break; |
1da177e4 | 1171 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 1172 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 1173 | break; |
1da177e4 | 1174 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1175 | switch (header->fsf_status_qual.word[0]){ |
1176 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
64b29a13 AH |
1177 | if (port && (send_els->ls_code != ZFCP_LS_ADISC)) |
1178 | zfcp_test_link(port); | |
c41f8cbd | 1179 | /*fall through */ |
1da177e4 | 1180 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1181 | case FSF_SQ_RETRY_IF_POSSIBLE: |
c41f8cbd | 1182 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1183 | break; |
1da177e4 LT |
1184 | } |
1185 | break; | |
1da177e4 | 1186 | case FSF_ELS_COMMAND_REJECTED: |
1da177e4 | 1187 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1188 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1189 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1190 | break; |
1da177e4 | 1191 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1192 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1193 | break; |
c41f8cbd SS |
1194 | case FSF_SBAL_MISMATCH: |
1195 | /* should never occure, avoided in zfcp_fsf_send_els */ | |
1196 | /* fall through */ | |
1da177e4 | 1197 | default: |
c41f8cbd | 1198 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1199 | break; |
1200 | } | |
1da177e4 | 1201 | skip_fsfstatus: |
aa551daf | 1202 | if (send_els->handler) |
1da177e4 | 1203 | send_els->handler(send_els->handler_data); |
c41f8cbd | 1204 | } |
1da177e4 | 1205 | |
c41f8cbd SS |
1206 | /** |
1207 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) | |
1208 | * @els: pointer to struct zfcp_send_els with data for the command | |
1209 | */ | |
1210 | int zfcp_fsf_send_els(struct zfcp_send_els *els) | |
1211 | { | |
1212 | struct zfcp_fsf_req *req; | |
1213 | struct zfcp_adapter *adapter = els->adapter; | |
1214 | struct fsf_qtcb_bottom_support *bottom; | |
1215 | int ret = -EIO; | |
1216 | ||
1217 | if (unlikely(!(atomic_read(&els->port->status) & | |
1218 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
1219 | return -EBUSY; | |
1220 | ||
1221 | spin_lock(&adapter->req_q.lock); | |
1222 | if (!atomic_read(&adapter->req_q.count)) | |
1223 | goto out; | |
1224 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS, | |
1225 | ZFCP_REQ_AUTO_CLEANUP, NULL); | |
1226 | if (unlikely(IS_ERR(req))) { | |
1227 | ret = PTR_ERR(req); | |
1228 | goto out; | |
1229 | } | |
1230 | ||
1231 | ret = zfcp_fsf_setup_sbals(req, els->req, els->resp, | |
1232 | FSF_MAX_SBALS_PER_ELS_REQ); | |
1233 | if (ret) | |
1234 | goto failed_send; | |
1235 | ||
1236 | bottom = &req->qtcb->bottom.support; | |
1237 | req->handler = zfcp_fsf_send_els_handler; | |
1238 | bottom->d_id = els->d_id; | |
1239 | bottom->service_class = FSF_CLASS_3; | |
1240 | bottom->timeout = 2 * R_A_TOV; | |
1241 | req->data = els; | |
1242 | ||
1243 | zfcp_san_dbf_event_els_request(req); | |
1244 | ||
1245 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1246 | ret = zfcp_fsf_req_send(req); | |
1247 | if (ret) | |
1248 | goto failed_send; | |
1249 | ||
1250 | goto out; | |
1251 | ||
1252 | failed_send: | |
1253 | zfcp_fsf_req_free(req); | |
1254 | out: | |
1255 | spin_unlock(&adapter->req_q.lock); | |
1256 | return ret; | |
1da177e4 LT |
1257 | } |
1258 | ||
c41f8cbd | 1259 | int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) |
1da177e4 LT |
1260 | { |
1261 | volatile struct qdio_buffer_element *sbale; | |
c41f8cbd | 1262 | struct zfcp_fsf_req *req; |
52ef11a7 | 1263 | struct zfcp_adapter *adapter = erp_action->adapter; |
c41f8cbd SS |
1264 | int retval = -EIO; |
1265 | ||
d4538817 | 1266 | spin_lock_bh(&adapter->req_q.lock); |
c41f8cbd SS |
1267 | if (!atomic_read(&adapter->req_q.count)) |
1268 | goto out; | |
1269 | req = zfcp_fsf_req_create(adapter, | |
1270 | FSF_QTCB_EXCHANGE_CONFIG_DATA, | |
1271 | ZFCP_REQ_AUTO_CLEANUP, | |
1272 | adapter->pool.fsf_req_erp); | |
1273 | if (unlikely(IS_ERR(req))) { | |
1274 | retval = PTR_ERR(req); | |
1275 | goto out; | |
1da177e4 LT |
1276 | } |
1277 | ||
c41f8cbd | 1278 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1279 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1280 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1281 | |
c41f8cbd | 1282 | req->qtcb->bottom.config.feature_selection = |
aef4a983 MS |
1283 | FSF_FEATURE_CFDC | |
1284 | FSF_FEATURE_LUN_SHARING | | |
9eb69aff | 1285 | FSF_FEATURE_NOTIFICATION_LOST | |
aef4a983 | 1286 | FSF_FEATURE_UPDATE_ALERT; |
c41f8cbd SS |
1287 | req->erp_action = erp_action; |
1288 | req->handler = zfcp_fsf_exchange_config_data_handler; | |
1289 | erp_action->fsf_req = req; | |
1da177e4 | 1290 | |
287ac01a | 1291 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1292 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1293 | if (retval) { |
c41f8cbd | 1294 | zfcp_fsf_req_free(req); |
1da177e4 | 1295 | erp_action->fsf_req = NULL; |
1da177e4 | 1296 | } |
c41f8cbd | 1297 | out: |
d4538817 | 1298 | spin_unlock_bh(&adapter->req_q.lock); |
52ef11a7 SS |
1299 | return retval; |
1300 | } | |
1da177e4 | 1301 | |
c41f8cbd SS |
1302 | int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter, |
1303 | struct fsf_qtcb_bottom_config *data) | |
52ef11a7 SS |
1304 | { |
1305 | volatile struct qdio_buffer_element *sbale; | |
c41f8cbd SS |
1306 | struct zfcp_fsf_req *req = NULL; |
1307 | int retval = -EIO; | |
1308 | ||
d4538817 | 1309 | spin_lock_bh(&adapter->req_q.lock); |
c41f8cbd SS |
1310 | if (zfcp_fsf_req_sbal_get(adapter)) |
1311 | goto out; | |
1312 | ||
1313 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA, | |
1314 | 0, NULL); | |
1315 | if (unlikely(IS_ERR(req))) { | |
1316 | retval = PTR_ERR(req); | |
1317 | goto out; | |
52ef11a7 SS |
1318 | } |
1319 | ||
c41f8cbd | 1320 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1321 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1322 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
c41f8cbd | 1323 | req->handler = zfcp_fsf_exchange_config_data_handler; |
52ef11a7 | 1324 | |
c41f8cbd | 1325 | req->qtcb->bottom.config.feature_selection = |
52ef11a7 SS |
1326 | FSF_FEATURE_CFDC | |
1327 | FSF_FEATURE_LUN_SHARING | | |
1328 | FSF_FEATURE_NOTIFICATION_LOST | | |
1329 | FSF_FEATURE_UPDATE_ALERT; | |
1330 | ||
1331 | if (data) | |
c41f8cbd | 1332 | req->data = data; |
52ef11a7 | 1333 | |
c41f8cbd SS |
1334 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
1335 | retval = zfcp_fsf_req_send(req); | |
1336 | out: | |
d4538817 | 1337 | spin_unlock_bh(&adapter->req_q.lock); |
553448f6 | 1338 | if (!retval) |
c41f8cbd SS |
1339 | wait_event(req->completion_wq, |
1340 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
52ef11a7 | 1341 | |
c41f8cbd | 1342 | zfcp_fsf_req_free(req); |
52ef11a7 | 1343 | |
1da177e4 LT |
1344 | return retval; |
1345 | } | |
1346 | ||
1da177e4 LT |
1347 | /** |
1348 | * zfcp_fsf_exchange_port_data - request information about local port | |
aef4a983 | 1349 | * @erp_action: ERP action for the adapter for which port data is requested |
c41f8cbd | 1350 | * Returns: 0 on success, error otherwise |
1da177e4 | 1351 | */ |
c41f8cbd | 1352 | int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) |
1da177e4 LT |
1353 | { |
1354 | volatile struct qdio_buffer_element *sbale; | |
c41f8cbd | 1355 | struct zfcp_fsf_req *req; |
52ef11a7 | 1356 | struct zfcp_adapter *adapter = erp_action->adapter; |
c41f8cbd | 1357 | int retval = -EIO; |
1da177e4 | 1358 | |
553448f6 | 1359 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1360 | return -EOPNOTSUPP; |
1da177e4 | 1361 | |
d4538817 | 1362 | spin_lock_bh(&adapter->req_q.lock); |
c41f8cbd SS |
1363 | if (!atomic_read(&adapter->req_q.count)) |
1364 | goto out; | |
1365 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, | |
1366 | ZFCP_REQ_AUTO_CLEANUP, | |
1367 | adapter->pool.fsf_req_erp); | |
1368 | if (unlikely(IS_ERR(req))) { | |
1369 | retval = PTR_ERR(req); | |
1370 | goto out; | |
aef4a983 MS |
1371 | } |
1372 | ||
c41f8cbd | 1373 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1374 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1375 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1376 | |
c41f8cbd SS |
1377 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1378 | req->erp_action = erp_action; | |
1379 | erp_action->fsf_req = req; | |
52ef11a7 | 1380 | |
287ac01a | 1381 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1382 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1383 | if (retval) { |
c41f8cbd | 1384 | zfcp_fsf_req_free(req); |
52ef11a7 SS |
1385 | erp_action->fsf_req = NULL; |
1386 | } | |
c41f8cbd | 1387 | out: |
d4538817 | 1388 | spin_unlock_bh(&adapter->req_q.lock); |
52ef11a7 SS |
1389 | return retval; |
1390 | } | |
1391 | ||
52ef11a7 SS |
1392 | /** |
1393 | * zfcp_fsf_exchange_port_data_sync - request information about local port | |
c41f8cbd SS |
1394 | * @adapter: pointer to struct zfcp_adapter |
1395 | * @data: pointer to struct fsf_qtcb_bottom_port | |
1396 | * Returns: 0 on success, error otherwise | |
52ef11a7 | 1397 | */ |
c41f8cbd SS |
1398 | int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, |
1399 | struct fsf_qtcb_bottom_port *data) | |
52ef11a7 SS |
1400 | { |
1401 | volatile struct qdio_buffer_element *sbale; | |
c41f8cbd SS |
1402 | struct zfcp_fsf_req *req = NULL; |
1403 | int retval = -EIO; | |
52ef11a7 | 1404 | |
553448f6 | 1405 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1406 | return -EOPNOTSUPP; |
52ef11a7 | 1407 | |
d4538817 | 1408 | spin_lock_bh(&adapter->req_q.lock); |
c41f8cbd SS |
1409 | if (!atomic_read(&adapter->req_q.count)) |
1410 | goto out; | |
1411 | ||
1412 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, 0, | |
1413 | NULL); | |
1414 | if (unlikely(IS_ERR(req))) { | |
1415 | retval = PTR_ERR(req); | |
1416 | goto out; | |
1da177e4 LT |
1417 | } |
1418 | ||
52ef11a7 | 1419 | if (data) |
c41f8cbd | 1420 | req->data = data; |
52ef11a7 | 1421 | |
c41f8cbd | 1422 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1423 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1424 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1425 | ||
c41f8cbd SS |
1426 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1427 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1428 | retval = zfcp_fsf_req_send(req); | |
1429 | out: | |
d4538817 | 1430 | spin_unlock_bh(&adapter->req_q.lock); |
553448f6 | 1431 | if (!retval) |
c41f8cbd SS |
1432 | wait_event(req->completion_wq, |
1433 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
1434 | zfcp_fsf_req_free(req); | |
1da177e4 | 1435 | |
1da177e4 LT |
1436 | return retval; |
1437 | } | |
1438 | ||
c41f8cbd | 1439 | static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1440 | { |
c41f8cbd SS |
1441 | struct zfcp_port *port = req->data; |
1442 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1443 | struct fsf_plogi *plogi; |
1da177e4 | 1444 | |
c41f8cbd | 1445 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 | 1446 | goto skip_fsfstatus; |
1da177e4 | 1447 | |
1da177e4 | 1448 | switch (header->fsf_status) { |
1da177e4 | 1449 | case FSF_PORT_ALREADY_OPEN: |
1da177e4 | 1450 | break; |
1da177e4 | 1451 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1452 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1453 | break; |
1da177e4 | 1454 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: |
c41f8cbd | 1455 | dev_warn(&req->adapter->ccw_device->dev, |
553448f6 CS |
1456 | "The adapter is out of resources. The remote port " |
1457 | "0x%016Lx could not be opened, disabling it.\n", | |
1458 | port->wwpn); | |
c41f8cbd SS |
1459 | zfcp_erp_port_failed(port, 31, req); |
1460 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1461 | break; |
1da177e4 | 1462 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1463 | switch (header->fsf_status_qual.word[0]) { |
1464 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1465 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1466 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1467 | break; |
1468 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
c41f8cbd | 1469 | dev_warn(&req->adapter->ccw_device->dev, |
553448f6 CS |
1470 | "The remote port 0x%016Lx could not be " |
1471 | "opened. Disabling it.\n", port->wwpn); | |
c41f8cbd SS |
1472 | zfcp_erp_port_failed(port, 32, req); |
1473 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
1474 | break; |
1475 | } | |
1476 | break; | |
1da177e4 | 1477 | case FSF_GOOD: |
1da177e4 | 1478 | port->handle = header->port_handle; |
1da177e4 LT |
1479 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN | |
1480 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
d736a27b AH |
1481 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
1482 | ZFCP_STATUS_COMMON_ACCESS_BOXED, | |
1483 | &port->status); | |
1da177e4 LT |
1484 | /* check whether D_ID has changed during open */ |
1485 | /* | |
1486 | * FIXME: This check is not airtight, as the FCP channel does | |
1487 | * not monitor closures of target port connections caused on | |
1488 | * the remote side. Thus, they might miss out on invalidating | |
1489 | * locally cached WWPNs (and other N_Port parameters) of gone | |
1490 | * target ports. So, our heroic attempt to make things safe | |
1491 | * could be undermined by 'open port' response data tagged with | |
1492 | * obsolete WWPNs. Another reason to monitor potential | |
1493 | * connection closures ourself at least (by interpreting | |
1494 | * incoming ELS' and unsolicited status). It just crosses my | |
1495 | * mind that one should be able to cross-check by means of | |
1496 | * another GID_PN straight after a port has been opened. | |
1497 | * Alternately, an ADISC/PDISC ELS should suffice, as well. | |
1498 | */ | |
c41f8cbd SS |
1499 | if (atomic_read(&port->status) & ZFCP_STATUS_PORT_NO_WWPN) |
1500 | break; | |
1501 | ||
1502 | plogi = (struct fsf_plogi *) req->qtcb->bottom.support.els; | |
1503 | if (req->qtcb->bottom.support.els1_length >= sizeof(*plogi)) { | |
1504 | if (plogi->serv_param.wwpn != port->wwpn) | |
1505 | atomic_clear_mask(ZFCP_STATUS_PORT_DID_DID, | |
1506 | &port->status); | |
1507 | else { | |
1508 | port->wwnn = plogi->serv_param.wwnn; | |
1509 | zfcp_fc_plogi_evaluate(port, plogi); | |
1da177e4 LT |
1510 | } |
1511 | } | |
1512 | break; | |
1da177e4 | 1513 | case FSF_UNKNOWN_OP_SUBTYPE: |
c41f8cbd | 1514 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1515 | break; |
1516 | } | |
1517 | ||
c41f8cbd | 1518 | skip_fsfstatus: |
1da177e4 | 1519 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &port->status); |
1da177e4 LT |
1520 | } |
1521 | ||
c41f8cbd SS |
1522 | /** |
1523 | * zfcp_fsf_open_port - create and send open port request | |
1524 | * @erp_action: pointer to struct zfcp_erp_action | |
1525 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1526 | */ |
c41f8cbd | 1527 | int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) |
1da177e4 LT |
1528 | { |
1529 | volatile struct qdio_buffer_element *sbale; | |
c41f8cbd SS |
1530 | struct zfcp_adapter *adapter = erp_action->adapter; |
1531 | struct zfcp_fsf_req *req; | |
1532 | int retval = -EIO; | |
1533 | ||
d4538817 | 1534 | spin_lock_bh(&adapter->req_q.lock); |
c41f8cbd SS |
1535 | if (zfcp_fsf_req_sbal_get(adapter)) |
1536 | goto out; | |
1537 | ||
1538 | req = zfcp_fsf_req_create(adapter, | |
1539 | FSF_QTCB_OPEN_PORT_WITH_DID, | |
1540 | ZFCP_REQ_AUTO_CLEANUP, | |
1541 | adapter->pool.fsf_req_erp); | |
1542 | if (unlikely(IS_ERR(req))) { | |
1543 | retval = PTR_ERR(req); | |
1da177e4 | 1544 | goto out; |
c41f8cbd | 1545 | } |
1da177e4 | 1546 | |
c41f8cbd | 1547 | sbale = zfcp_qdio_sbale_req(req); |
1da177e4 LT |
1548 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1549 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1550 | ||
c41f8cbd SS |
1551 | req->handler = zfcp_fsf_open_port_handler; |
1552 | req->qtcb->bottom.support.d_id = erp_action->port->d_id; | |
1553 | req->data = erp_action->port; | |
1554 | req->erp_action = erp_action; | |
1555 | erp_action->fsf_req = req; | |
1556 | atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->port->status); | |
1557 | ||
287ac01a | 1558 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1559 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1560 | if (retval) { |
c41f8cbd | 1561 | zfcp_fsf_req_free(req); |
1da177e4 | 1562 | erp_action->fsf_req = NULL; |
1da177e4 | 1563 | } |
c41f8cbd | 1564 | out: |
d4538817 | 1565 | spin_unlock_bh(&adapter->req_q.lock); |
1da177e4 LT |
1566 | return retval; |
1567 | } | |
1568 | ||
c41f8cbd | 1569 | static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1570 | { |
c41f8cbd | 1571 | struct zfcp_port *port = req->data; |
1da177e4 | 1572 | |
c41f8cbd | 1573 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 | 1574 | goto skip_fsfstatus; |
1da177e4 | 1575 | |
c41f8cbd | 1576 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1577 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd SS |
1578 | zfcp_erp_adapter_reopen(port->adapter, 0, 107, req); |
1579 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1580 | break; |
1da177e4 | 1581 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 | 1582 | break; |
1da177e4 | 1583 | case FSF_GOOD: |
c41f8cbd | 1584 | zfcp_erp_modify_port_status(port, 33, req, |
1da177e4 LT |
1585 | ZFCP_STATUS_COMMON_OPEN, |
1586 | ZFCP_CLEAR); | |
1da177e4 | 1587 | break; |
1da177e4 LT |
1588 | } |
1589 | ||
c41f8cbd | 1590 | skip_fsfstatus: |
1da177e4 | 1591 | atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &port->status); |
1da177e4 LT |
1592 | } |
1593 | ||
c41f8cbd SS |
1594 | /** |
1595 | * zfcp_fsf_close_port - create and send close port request | |
1596 | * @erp_action: pointer to struct zfcp_erp_action | |
1597 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1598 | */ |
c41f8cbd | 1599 | int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1600 | { |
1da177e4 | 1601 | volatile struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1602 | struct zfcp_adapter *adapter = erp_action->adapter; |
1603 | struct zfcp_fsf_req *req; | |
1604 | int retval = -EIO; | |
1605 | ||
d4538817 | 1606 | spin_lock_bh(&adapter->req_q.lock); |
c41f8cbd SS |
1607 | if (zfcp_fsf_req_sbal_get(adapter)) |
1608 | goto out; | |
1609 | ||
1610 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT, | |
1611 | ZFCP_REQ_AUTO_CLEANUP, | |
1612 | adapter->pool.fsf_req_erp); | |
1613 | if (unlikely(IS_ERR(req))) { | |
1614 | retval = PTR_ERR(req); | |
1da177e4 | 1615 | goto out; |
c41f8cbd | 1616 | } |
1da177e4 | 1617 | |
c41f8cbd | 1618 | sbale = zfcp_qdio_sbale_req(req); |
1da177e4 LT |
1619 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1620 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1621 | ||
c41f8cbd SS |
1622 | req->handler = zfcp_fsf_close_port_handler; |
1623 | req->data = erp_action->port; | |
1624 | req->erp_action = erp_action; | |
1625 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1626 | erp_action->fsf_req = req; | |
1627 | atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->port->status); | |
1628 | ||
287ac01a | 1629 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1630 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1631 | if (retval) { |
c41f8cbd | 1632 | zfcp_fsf_req_free(req); |
1da177e4 | 1633 | erp_action->fsf_req = NULL; |
1da177e4 | 1634 | } |
c41f8cbd | 1635 | out: |
d4538817 | 1636 | spin_unlock_bh(&adapter->req_q.lock); |
1da177e4 LT |
1637 | return retval; |
1638 | } | |
1639 | ||
c41f8cbd | 1640 | static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1641 | { |
c41f8cbd SS |
1642 | struct zfcp_port *port = req->data; |
1643 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1644 | struct zfcp_unit *unit; |
1da177e4 | 1645 | |
c41f8cbd | 1646 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 | 1647 | goto skip_fsfstatus; |
1da177e4 | 1648 | |
1da177e4 | 1649 | switch (header->fsf_status) { |
1da177e4 | 1650 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd SS |
1651 | zfcp_erp_adapter_reopen(port->adapter, 0, 108, req); |
1652 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1653 | break; |
1da177e4 | 1654 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1655 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1656 | break; |
1da177e4 | 1657 | case FSF_PORT_BOXED: |
c41f8cbd SS |
1658 | zfcp_erp_port_boxed(port, 50, req); |
1659 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
1660 | ZFCP_STATUS_FSFREQ_RETRY; | |
5c815d15 CS |
1661 | /* can't use generic zfcp_erp_modify_port_status because |
1662 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */ | |
1663 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
1664 | list_for_each_entry(unit, &port->unit_list_head, list) | |
1665 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, | |
1666 | &unit->status); | |
1da177e4 | 1667 | break; |
1da177e4 | 1668 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1669 | switch (header->fsf_status_qual.word[0]) { |
1670 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
c41f8cbd | 1671 | /* fall through */ |
1da177e4 | 1672 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1673 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1674 | break; |
1da177e4 LT |
1675 | } |
1676 | break; | |
1da177e4 | 1677 | case FSF_GOOD: |
1da177e4 LT |
1678 | /* can't use generic zfcp_erp_modify_port_status because |
1679 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port | |
1680 | */ | |
1681 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
1682 | list_for_each_entry(unit, &port->unit_list_head, list) | |
c41f8cbd SS |
1683 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, |
1684 | &unit->status); | |
1da177e4 | 1685 | break; |
1da177e4 | 1686 | } |
c41f8cbd | 1687 | skip_fsfstatus: |
1da177e4 | 1688 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, &port->status); |
1da177e4 LT |
1689 | } |
1690 | ||
c41f8cbd SS |
1691 | /** |
1692 | * zfcp_fsf_close_physical_port - close physical port | |
1693 | * @erp_action: pointer to struct zfcp_erp_action | |
1694 | * Returns: 0 on success | |
1da177e4 | 1695 | */ |
c41f8cbd | 1696 | int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) |
1da177e4 LT |
1697 | { |
1698 | volatile struct qdio_buffer_element *sbale; | |
c41f8cbd SS |
1699 | struct zfcp_adapter *adapter = erp_action->adapter; |
1700 | struct zfcp_fsf_req *req; | |
1701 | int retval = -EIO; | |
1702 | ||
d4538817 | 1703 | spin_lock_bh(&adapter->req_q.lock); |
c41f8cbd | 1704 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 1705 | goto out; |
1da177e4 | 1706 | |
c41f8cbd SS |
1707 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PHYSICAL_PORT, |
1708 | ZFCP_REQ_AUTO_CLEANUP, | |
1709 | adapter->pool.fsf_req_erp); | |
1710 | if (unlikely(IS_ERR(req))) { | |
1711 | retval = PTR_ERR(req); | |
1712 | goto out; | |
1713 | } | |
1da177e4 | 1714 | |
c41f8cbd SS |
1715 | sbale = zfcp_qdio_sbale_req(req); |
1716 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1717 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1718 | |
c41f8cbd SS |
1719 | req->data = erp_action->port; |
1720 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1721 | req->erp_action = erp_action; | |
1722 | req->handler = zfcp_fsf_close_physical_port_handler; | |
1723 | erp_action->fsf_req = req; | |
1724 | atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, | |
1725 | &erp_action->port->status); | |
1726 | ||
287ac01a | 1727 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1728 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1729 | if (retval) { |
c41f8cbd | 1730 | zfcp_fsf_req_free(req); |
1da177e4 | 1731 | erp_action->fsf_req = NULL; |
1da177e4 | 1732 | } |
c41f8cbd | 1733 | out: |
d4538817 | 1734 | spin_unlock_bh(&adapter->req_q.lock); |
1da177e4 LT |
1735 | return retval; |
1736 | } | |
1737 | ||
c41f8cbd | 1738 | static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1739 | { |
c41f8cbd SS |
1740 | struct zfcp_adapter *adapter = req->adapter; |
1741 | struct zfcp_unit *unit = req->data; | |
1742 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1743 | struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support; | |
1744 | struct fsf_queue_designator *queue_designator = | |
1745 | &header->fsf_status_qual.fsf_queue_designator; | |
aef4a983 | 1746 | int exclusive, readwrite; |
1da177e4 | 1747 | |
c41f8cbd | 1748 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 | 1749 | goto skip_fsfstatus; |
1da177e4 | 1750 | |
1da177e4 | 1751 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
b64ddf96 | 1752 | ZFCP_STATUS_COMMON_ACCESS_BOXED | |
1da177e4 LT |
1753 | ZFCP_STATUS_UNIT_SHARED | |
1754 | ZFCP_STATUS_UNIT_READONLY, | |
1755 | &unit->status); | |
1756 | ||
1da177e4 LT |
1757 | switch (header->fsf_status) { |
1758 | ||
1759 | case FSF_PORT_HANDLE_NOT_VALID: | |
c41f8cbd SS |
1760 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 109, req); |
1761 | /* fall through */ | |
1da177e4 | 1762 | case FSF_LUN_ALREADY_OPEN: |
1da177e4 | 1763 | break; |
1da177e4 | 1764 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1765 | zfcp_fsf_access_denied_unit(req, unit); |
1da177e4 | 1766 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
553448f6 | 1767 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); |
1da177e4 | 1768 | break; |
1da177e4 | 1769 | case FSF_PORT_BOXED: |
c41f8cbd SS |
1770 | zfcp_erp_port_boxed(unit->port, 51, req); |
1771 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
1772 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 1773 | break; |
1da177e4 | 1774 | case FSF_LUN_SHARING_VIOLATION: |
c41f8cbd | 1775 | if (header->fsf_status_qual.word[0]) |
553448f6 CS |
1776 | dev_warn(&adapter->ccw_device->dev, |
1777 | "FCP-LUN 0x%Lx at the remote port " | |
1778 | "with WWPN 0x%Lx " | |
1779 | "connected to the adapter " | |
1780 | "is already in use in LPAR%d, CSS%d.\n", | |
1781 | unit->fcp_lun, | |
1782 | unit->port->wwpn, | |
1783 | queue_designator->hla, | |
1784 | queue_designator->cssid); | |
c41f8cbd | 1785 | else |
553448f6 CS |
1786 | zfcp_act_eval_err(adapter, |
1787 | header->fsf_status_qual.word[2]); | |
c41f8cbd | 1788 | zfcp_erp_unit_access_denied(unit, 60, req); |
1da177e4 LT |
1789 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
1790 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); | |
c41f8cbd | 1791 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1792 | break; |
1da177e4 | 1793 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: |
c41f8cbd | 1794 | dev_warn(&adapter->ccw_device->dev, |
553448f6 CS |
1795 | "The adapter ran out of resources. There is no " |
1796 | "handle available for unit 0x%016Lx on port 0x%016Lx.", | |
1797 | unit->fcp_lun, unit->port->wwpn); | |
c41f8cbd SS |
1798 | zfcp_erp_unit_failed(unit, 34, req); |
1799 | /* fall through */ | |
1800 | case FSF_INVALID_COMMAND_OPTION: | |
1801 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1802 | break; |
1da177e4 | 1803 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1804 | switch (header->fsf_status_qual.word[0]) { |
1805 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
65a8d4e1 | 1806 | zfcp_test_link(unit->port); |
c41f8cbd | 1807 | /* fall through */ |
1da177e4 | 1808 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1809 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1810 | break; |
1da177e4 LT |
1811 | } |
1812 | break; | |
1813 | ||
1da177e4 | 1814 | case FSF_GOOD: |
1da177e4 | 1815 | unit->handle = header->lun_handle; |
1da177e4 | 1816 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
aef4a983 MS |
1817 | |
1818 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) && | |
1819 | (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) && | |
1820 | (adapter->ccw_device->id.dev_model != ZFCP_DEVICE_MODEL_PRIV)) { | |
1821 | exclusive = (bottom->lun_access_info & | |
1822 | FSF_UNIT_ACCESS_EXCLUSIVE); | |
1823 | readwrite = (bottom->lun_access_info & | |
1824 | FSF_UNIT_ACCESS_OUTBOUND_TRANSFER); | |
1825 | ||
1da177e4 LT |
1826 | if (!exclusive) |
1827 | atomic_set_mask(ZFCP_STATUS_UNIT_SHARED, | |
1828 | &unit->status); | |
1829 | ||
1830 | if (!readwrite) { | |
1831 | atomic_set_mask(ZFCP_STATUS_UNIT_READONLY, | |
1832 | &unit->status); | |
c41f8cbd | 1833 | dev_info(&adapter->ccw_device->dev, |
553448f6 CS |
1834 | "Read-only access for unit 0x%016Lx " |
1835 | "on port 0x%016Lx.\n", | |
1836 | unit->fcp_lun, unit->port->wwpn); | |
1da177e4 LT |
1837 | } |
1838 | ||
1839 | if (exclusive && !readwrite) { | |
c41f8cbd | 1840 | dev_err(&adapter->ccw_device->dev, |
553448f6 CS |
1841 | "Exclusive access of read-only unit " |
1842 | "0x%016Lx on port 0x%016Lx not " | |
1843 | "supported, disabling unit.\n", | |
1844 | unit->fcp_lun, unit->port->wwpn); | |
c41f8cbd SS |
1845 | zfcp_erp_unit_failed(unit, 35, req); |
1846 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1847 | zfcp_erp_unit_shutdown(unit, 0, 80, req); | |
1da177e4 | 1848 | } else if (!exclusive && readwrite) { |
c41f8cbd | 1849 | dev_err(&adapter->ccw_device->dev, |
553448f6 CS |
1850 | "Shared access of read-write unit " |
1851 | "0x%016Lx on port 0x%016Lx not " | |
1852 | "supported, disabling unit.\n", | |
1853 | unit->fcp_lun, unit->port->wwpn); | |
c41f8cbd SS |
1854 | zfcp_erp_unit_failed(unit, 36, req); |
1855 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1856 | zfcp_erp_unit_shutdown(unit, 0, 81, req); | |
1da177e4 LT |
1857 | } |
1858 | } | |
1da177e4 | 1859 | break; |
1da177e4 LT |
1860 | } |
1861 | ||
c41f8cbd | 1862 | skip_fsfstatus: |
1da177e4 | 1863 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &unit->status); |
1da177e4 LT |
1864 | } |
1865 | ||
c41f8cbd SS |
1866 | /** |
1867 | * zfcp_fsf_open_unit - open unit | |
1868 | * @erp_action: pointer to struct zfcp_erp_action | |
1869 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1870 | */ |
c41f8cbd | 1871 | int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) |
1da177e4 LT |
1872 | { |
1873 | volatile struct qdio_buffer_element *sbale; | |
c41f8cbd SS |
1874 | struct zfcp_adapter *adapter = erp_action->adapter; |
1875 | struct zfcp_fsf_req *req; | |
1876 | int retval = -EIO; | |
1877 | ||
d4538817 | 1878 | spin_lock_bh(&adapter->req_q.lock); |
c41f8cbd | 1879 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 1880 | goto out; |
1da177e4 | 1881 | |
c41f8cbd SS |
1882 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_OPEN_LUN, |
1883 | ZFCP_REQ_AUTO_CLEANUP, | |
1884 | adapter->pool.fsf_req_erp); | |
1885 | if (unlikely(IS_ERR(req))) { | |
1886 | retval = PTR_ERR(req); | |
1887 | goto out; | |
1888 | } | |
1889 | ||
1890 | sbale = zfcp_qdio_sbale_req(req); | |
1da177e4 LT |
1891 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1892 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1893 | ||
c41f8cbd SS |
1894 | req->qtcb->header.port_handle = erp_action->port->handle; |
1895 | req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun; | |
1896 | req->handler = zfcp_fsf_open_unit_handler; | |
1897 | req->data = erp_action->unit; | |
1898 | req->erp_action = erp_action; | |
1899 | erp_action->fsf_req = req; | |
1900 | ||
1901 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) | |
1902 | req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING; | |
1903 | ||
1904 | atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->unit->status); | |
1da177e4 | 1905 | |
287ac01a | 1906 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1907 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1908 | if (retval) { |
c41f8cbd | 1909 | zfcp_fsf_req_free(req); |
1da177e4 | 1910 | erp_action->fsf_req = NULL; |
1da177e4 | 1911 | } |
c41f8cbd | 1912 | out: |
d4538817 | 1913 | spin_unlock_bh(&adapter->req_q.lock); |
1da177e4 LT |
1914 | return retval; |
1915 | } | |
1916 | ||
c41f8cbd | 1917 | static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1918 | { |
c41f8cbd | 1919 | struct zfcp_unit *unit = req->data; |
1da177e4 | 1920 | |
c41f8cbd | 1921 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 | 1922 | goto skip_fsfstatus; |
1da177e4 | 1923 | |
c41f8cbd | 1924 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1925 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd SS |
1926 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 110, req); |
1927 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1928 | break; |
1da177e4 | 1929 | case FSF_LUN_HANDLE_NOT_VALID: |
c41f8cbd SS |
1930 | zfcp_erp_port_reopen(unit->port, 0, 111, req); |
1931 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1932 | break; |
1da177e4 | 1933 | case FSF_PORT_BOXED: |
c41f8cbd SS |
1934 | zfcp_erp_port_boxed(unit->port, 52, req); |
1935 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
1936 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 1937 | break; |
1da177e4 | 1938 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 1939 | switch (req->qtcb->header.fsf_status_qual.word[0]) { |
1da177e4 | 1940 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
65a8d4e1 | 1941 | zfcp_test_link(unit->port); |
c41f8cbd | 1942 | /* fall through */ |
1da177e4 | 1943 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1944 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1945 | break; |
1946 | } | |
1947 | break; | |
1da177e4 | 1948 | case FSF_GOOD: |
1da177e4 | 1949 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
1da177e4 | 1950 | break; |
1da177e4 | 1951 | } |
c41f8cbd | 1952 | skip_fsfstatus: |
1da177e4 | 1953 | atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &unit->status); |
1da177e4 LT |
1954 | } |
1955 | ||
1956 | /** | |
c41f8cbd SS |
1957 | * zfcp_fsf_close_unit - close zfcp unit |
1958 | * @erp_action: pointer to struct zfcp_unit | |
1959 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1960 | */ |
c41f8cbd | 1961 | int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) |
1da177e4 | 1962 | { |
1da177e4 | 1963 | volatile struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1964 | struct zfcp_adapter *adapter = erp_action->adapter; |
1965 | struct zfcp_fsf_req *req; | |
1966 | int retval = -EIO; | |
1da177e4 | 1967 | |
d4538817 | 1968 | spin_lock_bh(&adapter->req_q.lock); |
c41f8cbd | 1969 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 1970 | goto out; |
c41f8cbd SS |
1971 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_LUN, |
1972 | ZFCP_REQ_AUTO_CLEANUP, | |
1973 | adapter->pool.fsf_req_erp); | |
1974 | if (unlikely(IS_ERR(req))) { | |
1975 | retval = PTR_ERR(req); | |
1976 | goto out; | |
1977 | } | |
1da177e4 | 1978 | |
c41f8cbd SS |
1979 | sbale = zfcp_qdio_sbale_req(req); |
1980 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1da177e4 LT |
1981 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; |
1982 | ||
c41f8cbd SS |
1983 | req->qtcb->header.port_handle = erp_action->port->handle; |
1984 | req->qtcb->header.lun_handle = erp_action->unit->handle; | |
1985 | req->handler = zfcp_fsf_close_unit_handler; | |
1986 | req->data = erp_action->unit; | |
1987 | req->erp_action = erp_action; | |
1988 | erp_action->fsf_req = req; | |
1989 | atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->unit->status); | |
fdf23452 | 1990 | |
287ac01a | 1991 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
1992 | retval = zfcp_fsf_req_send(req); |
1993 | if (retval) { | |
1994 | zfcp_fsf_req_free(req); | |
1995 | erp_action->fsf_req = NULL; | |
1996 | } | |
1997 | out: | |
d4538817 | 1998 | spin_unlock_bh(&adapter->req_q.lock); |
c41f8cbd | 1999 | return retval; |
1da177e4 LT |
2000 | } |
2001 | ||
c9615858 CS |
2002 | static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat) |
2003 | { | |
2004 | lat_rec->sum += lat; | |
c41f8cbd SS |
2005 | lat_rec->min = min(lat_rec->min, lat); |
2006 | lat_rec->max = max(lat_rec->max, lat); | |
c9615858 CS |
2007 | } |
2008 | ||
c41f8cbd | 2009 | static void zfcp_fsf_req_latency(struct zfcp_fsf_req *req) |
c9615858 CS |
2010 | { |
2011 | struct fsf_qual_latency_info *lat_inf; | |
2012 | struct latency_cont *lat; | |
c41f8cbd | 2013 | struct zfcp_unit *unit = req->unit; |
c9615858 CS |
2014 | unsigned long flags; |
2015 | ||
c41f8cbd | 2016 | lat_inf = &req->qtcb->prefix.prot_status_qual.latency_info; |
c9615858 | 2017 | |
c41f8cbd | 2018 | switch (req->qtcb->bottom.io.data_direction) { |
c9615858 CS |
2019 | case FSF_DATADIR_READ: |
2020 | lat = &unit->latencies.read; | |
2021 | break; | |
2022 | case FSF_DATADIR_WRITE: | |
2023 | lat = &unit->latencies.write; | |
2024 | break; | |
2025 | case FSF_DATADIR_CMND: | |
2026 | lat = &unit->latencies.cmd; | |
2027 | break; | |
2028 | default: | |
2029 | return; | |
2030 | } | |
2031 | ||
2032 | spin_lock_irqsave(&unit->latencies.lock, flags); | |
2033 | zfcp_fsf_update_lat(&lat->channel, lat_inf->channel_lat); | |
2034 | zfcp_fsf_update_lat(&lat->fabric, lat_inf->fabric_lat); | |
2035 | lat->counter++; | |
c41f8cbd | 2036 | spin_unlock_irqrestore(&unit->latencies.lock, flags); |
1da177e4 LT |
2037 | } |
2038 | ||
c41f8cbd | 2039 | static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2040 | { |
c41f8cbd | 2041 | struct scsi_cmnd *scpnt = req->data; |
1da177e4 | 2042 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) |
c41f8cbd | 2043 | &(req->qtcb->bottom.io.fcp_rsp); |
1da177e4 | 2044 | u32 sns_len; |
f76af7d7 | 2045 | char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; |
1da177e4 | 2046 | unsigned long flags; |
1da177e4 | 2047 | |
553448f6 | 2048 | if (unlikely(!scpnt)) |
c41f8cbd | 2049 | return; |
553448f6 | 2050 | |
c41f8cbd SS |
2051 | read_lock_irqsave(&req->adapter->abort_lock, flags); |
2052 | ||
2053 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ABORTED)) { | |
feac6a07 MP |
2054 | set_host_byte(scpnt, DID_SOFT_ERROR); |
2055 | set_driver_byte(scpnt, SUGGEST_RETRY); | |
1da177e4 LT |
2056 | goto skip_fsfstatus; |
2057 | } | |
2058 | ||
c41f8cbd | 2059 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { |
feac6a07 | 2060 | set_host_byte(scpnt, DID_ERROR); |
1da177e4 LT |
2061 | goto skip_fsfstatus; |
2062 | } | |
2063 | ||
feac6a07 | 2064 | set_msg_byte(scpnt, COMMAND_COMPLETE); |
1da177e4 | 2065 | |
1da177e4 | 2066 | scpnt->result |= fcp_rsp_iu->scsi_status; |
1da177e4 | 2067 | |
c41f8cbd SS |
2068 | if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) |
2069 | zfcp_fsf_req_latency(req); | |
c9615858 | 2070 | |
1da177e4 | 2071 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) { |
c41f8cbd | 2072 | if (fcp_rsp_info[3] == RSP_CODE_GOOD) |
feac6a07 | 2073 | set_host_byte(scpnt, DID_OK); |
c41f8cbd | 2074 | else { |
feac6a07 | 2075 | set_host_byte(scpnt, DID_ERROR); |
6f71d9bc | 2076 | goto skip_fsfstatus; |
1da177e4 LT |
2077 | } |
2078 | } | |
2079 | ||
1da177e4 | 2080 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_sns_len_valid)) { |
c41f8cbd SS |
2081 | sns_len = FSF_FCP_RSP_SIZE - sizeof(struct fcp_rsp_iu) + |
2082 | fcp_rsp_iu->fcp_rsp_len; | |
1da177e4 | 2083 | sns_len = min(sns_len, (u32) SCSI_SENSE_BUFFERSIZE); |
1da177e4 | 2084 | sns_len = min(sns_len, fcp_rsp_iu->fcp_sns_len); |
1da177e4 | 2085 | |
9d058ecf | 2086 | memcpy(scpnt->sense_buffer, |
1da177e4 | 2087 | zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len); |
1da177e4 LT |
2088 | } |
2089 | ||
1da177e4 | 2090 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_under)) { |
7936a892 FT |
2091 | scsi_set_resid(scpnt, fcp_rsp_iu->fcp_resid); |
2092 | if (scsi_bufflen(scpnt) - scsi_get_resid(scpnt) < | |
2093 | scpnt->underflow) | |
feac6a07 | 2094 | set_host_byte(scpnt, DID_ERROR); |
1da177e4 | 2095 | } |
c41f8cbd | 2096 | skip_fsfstatus: |
8a36e453 | 2097 | if (scpnt->result != 0) |
c41f8cbd | 2098 | zfcp_scsi_dbf_event_result("erro", 3, req->adapter, scpnt, req); |
8a36e453 | 2099 | else if (scpnt->retries > 0) |
c41f8cbd | 2100 | zfcp_scsi_dbf_event_result("retr", 4, req->adapter, scpnt, req); |
8a36e453 | 2101 | else |
c41f8cbd | 2102 | zfcp_scsi_dbf_event_result("norm", 6, req->adapter, scpnt, req); |
1da177e4 | 2103 | |
1da177e4 | 2104 | scpnt->host_scribble = NULL; |
1da177e4 | 2105 | (scpnt->scsi_done) (scpnt); |
1da177e4 LT |
2106 | /* |
2107 | * We must hold this lock until scsi_done has been called. | |
2108 | * Otherwise we may call scsi_done after abort regarding this | |
2109 | * command has completed. | |
2110 | * Note: scsi_done must not block! | |
2111 | */ | |
c41f8cbd | 2112 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); |
1da177e4 LT |
2113 | } |
2114 | ||
c41f8cbd | 2115 | static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2116 | { |
1da177e4 | 2117 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) |
c41f8cbd | 2118 | &(req->qtcb->bottom.io.fcp_rsp); |
f76af7d7 | 2119 | char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; |
1da177e4 | 2120 | |
c41f8cbd SS |
2121 | if ((fcp_rsp_info[3] != RSP_CODE_GOOD) || |
2122 | (req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
2123 | req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
2124 | } | |
2125 | ||
2126 | ||
2127 | static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req) | |
2128 | { | |
2129 | struct zfcp_unit *unit; | |
2130 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
2131 | ||
2132 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)) | |
2133 | unit = req->data; | |
2134 | else | |
2135 | unit = req->unit; | |
2136 | ||
2137 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
1da177e4 | 2138 | goto skip_fsfstatus; |
1da177e4 | 2139 | |
c41f8cbd SS |
2140 | switch (header->fsf_status) { |
2141 | case FSF_HANDLE_MISMATCH: | |
2142 | case FSF_PORT_HANDLE_NOT_VALID: | |
2143 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 112, req); | |
2144 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2145 | break; | |
2146 | case FSF_FCPLUN_NOT_VALID: | |
2147 | case FSF_LUN_HANDLE_NOT_VALID: | |
2148 | zfcp_erp_port_reopen(unit->port, 0, 113, req); | |
2149 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 2150 | break; |
c41f8cbd SS |
2151 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
2152 | zfcp_fsf_class_not_supp(req); | |
1da177e4 | 2153 | break; |
c41f8cbd SS |
2154 | case FSF_ACCESS_DENIED: |
2155 | zfcp_fsf_access_denied_unit(req, unit); | |
2156 | break; | |
2157 | case FSF_DIRECTION_INDICATOR_NOT_VALID: | |
2158 | dev_err(&req->adapter->ccw_device->dev, | |
2159 | "Invalid data direction (%d) given for unit " | |
2160 | "0x%016Lx on port 0x%016Lx, shutting down " | |
2161 | "adapter.\n", | |
2162 | req->qtcb->bottom.io.data_direction, | |
2163 | unit->fcp_lun, unit->port->wwpn); | |
2164 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 133, req); | |
2165 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2166 | break; | |
2167 | case FSF_CMND_LENGTH_NOT_VALID: | |
2168 | dev_err(&req->adapter->ccw_device->dev, | |
2169 | "An invalid control-data-block length field (%d) " | |
2170 | "was found in a command for unit 0x%016Lx on port " | |
2171 | "0x%016Lx. Shutting down adapter.\n", | |
2172 | req->qtcb->bottom.io.fcp_cmnd_length, | |
2173 | unit->fcp_lun, unit->port->wwpn); | |
2174 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 134, req); | |
2175 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2176 | break; | |
2177 | case FSF_PORT_BOXED: | |
2178 | zfcp_erp_port_boxed(unit->port, 53, req); | |
2179 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
2180 | ZFCP_STATUS_FSFREQ_RETRY; | |
2181 | break; | |
2182 | case FSF_LUN_BOXED: | |
2183 | zfcp_erp_unit_boxed(unit, 54, req); | |
2184 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
2185 | ZFCP_STATUS_FSFREQ_RETRY; | |
2186 | break; | |
2187 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
2188 | if (header->fsf_status_qual.word[0] == | |
2189 | FSF_SQ_INVOKE_LINK_TEST_PROCEDURE) | |
2190 | zfcp_test_link(unit->port); | |
2191 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 2192 | break; |
1da177e4 | 2193 | } |
c41f8cbd SS |
2194 | skip_fsfstatus: |
2195 | if (req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT) | |
2196 | zfcp_fsf_send_fcp_ctm_handler(req); | |
2197 | else { | |
2198 | zfcp_fsf_send_fcp_command_task_handler(req); | |
2199 | req->unit = NULL; | |
2200 | zfcp_unit_put(unit); | |
2201 | } | |
1da177e4 LT |
2202 | } |
2203 | ||
c41f8cbd SS |
2204 | /** |
2205 | * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command) | |
2206 | * @adapter: adapter where scsi command is issued | |
2207 | * @unit: unit where command is sent to | |
2208 | * @scsi_cmnd: scsi command to be sent | |
2209 | * @timer: timer to be started when request is initiated | |
2210 | * @req_flags: flags for fsf_request | |
1da177e4 | 2211 | */ |
c41f8cbd SS |
2212 | int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter, |
2213 | struct zfcp_unit *unit, | |
2214 | struct scsi_cmnd *scsi_cmnd, | |
2215 | int use_timer, int req_flags) | |
1da177e4 | 2216 | { |
c41f8cbd SS |
2217 | struct zfcp_fsf_req *req; |
2218 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
2219 | unsigned int sbtype; | |
2220 | int real_bytes, retval = -EIO; | |
1da177e4 | 2221 | |
c41f8cbd SS |
2222 | if (unlikely(!(atomic_read(&unit->status) & |
2223 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2224 | return -EBUSY; | |
1da177e4 | 2225 | |
c41f8cbd SS |
2226 | spin_lock(&adapter->req_q.lock); |
2227 | if (!atomic_read(&adapter->req_q.count)) | |
2228 | goto out; | |
2229 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, | |
2230 | adapter->pool.fsf_req_scsi); | |
2231 | if (unlikely(IS_ERR(req))) { | |
2232 | retval = PTR_ERR(req); | |
2233 | goto out; | |
2234 | } | |
2235 | ||
2236 | zfcp_unit_get(unit); | |
2237 | req->unit = unit; | |
2238 | req->data = scsi_cmnd; | |
2239 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2240 | req->qtcb->header.lun_handle = unit->handle; | |
2241 | req->qtcb->header.port_handle = unit->port->handle; | |
2242 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
2243 | ||
2244 | scsi_cmnd->host_scribble = (unsigned char *) req->req_id; | |
2245 | ||
2246 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) &(req->qtcb->bottom.io.fcp_cmnd); | |
2247 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
2248 | /* | |
2249 | * set depending on data direction: | |
2250 | * data direction bits in SBALE (SB Type) | |
2251 | * data direction bits in QTCB | |
2252 | * data direction bits in FCP_CMND IU | |
2253 | */ | |
2254 | switch (scsi_cmnd->sc_data_direction) { | |
2255 | case DMA_NONE: | |
2256 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
2257 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
1da177e4 | 2258 | break; |
c41f8cbd SS |
2259 | case DMA_FROM_DEVICE: |
2260 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ; | |
2261 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
2262 | fcp_cmnd_iu->rddata = 1; | |
2263 | break; | |
2264 | case DMA_TO_DEVICE: | |
2265 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE; | |
2266 | sbtype = SBAL_FLAGS0_TYPE_WRITE; | |
2267 | fcp_cmnd_iu->wddata = 1; | |
1da177e4 | 2268 | break; |
c41f8cbd | 2269 | case DMA_BIDIRECTIONAL: |
1da177e4 | 2270 | default: |
c41f8cbd SS |
2271 | retval = -EIO; |
2272 | goto failed_scsi_cmnd; | |
1da177e4 LT |
2273 | } |
2274 | ||
c41f8cbd SS |
2275 | if (likely((scsi_cmnd->device->simple_tags) || |
2276 | ((atomic_read(&unit->status) & ZFCP_STATUS_UNIT_READONLY) && | |
2277 | (atomic_read(&unit->status) & ZFCP_STATUS_UNIT_SHARED)))) | |
2278 | fcp_cmnd_iu->task_attribute = SIMPLE_Q; | |
2279 | else | |
2280 | fcp_cmnd_iu->task_attribute = UNTAGGED; | |
1da177e4 | 2281 | |
c41f8cbd SS |
2282 | if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH)) |
2283 | fcp_cmnd_iu->add_fcp_cdb_length = | |
2284 | (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2; | |
1da177e4 | 2285 | |
c41f8cbd | 2286 | memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); |
45633fdc | 2287 | |
c41f8cbd SS |
2288 | req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + |
2289 | fcp_cmnd_iu->add_fcp_cdb_length + sizeof(fcp_dl_t); | |
1da177e4 | 2290 | |
c41f8cbd SS |
2291 | real_bytes = zfcp_qdio_sbals_from_sg(req, sbtype, |
2292 | scsi_sglist(scsi_cmnd), | |
2293 | FSF_MAX_SBALS_PER_REQ); | |
2294 | if (unlikely(real_bytes < 0)) { | |
2295 | if (req->sbal_number < FSF_MAX_SBALS_PER_REQ) | |
2296 | retval = -EIO; | |
2297 | else { | |
2298 | dev_err(&adapter->ccw_device->dev, | |
2299 | "SCSI request too large. " | |
2300 | "Shutting down unit 0x%016Lx on port " | |
2301 | "0x%016Lx.\n", unit->fcp_lun, | |
2302 | unit->port->wwpn); | |
2303 | zfcp_erp_unit_shutdown(unit, 0, 131, req); | |
2304 | retval = -EINVAL; | |
2305 | } | |
2306 | goto failed_scsi_cmnd; | |
1da177e4 | 2307 | } |
1da177e4 | 2308 | |
c41f8cbd | 2309 | zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes); |
1da177e4 | 2310 | |
c41f8cbd SS |
2311 | if (use_timer) |
2312 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1da177e4 | 2313 | |
c41f8cbd SS |
2314 | retval = zfcp_fsf_req_send(req); |
2315 | if (unlikely(retval)) | |
2316 | goto failed_scsi_cmnd; | |
1da177e4 | 2317 | |
c41f8cbd | 2318 | goto out; |
1da177e4 | 2319 | |
c41f8cbd SS |
2320 | failed_scsi_cmnd: |
2321 | zfcp_unit_put(unit); | |
2322 | zfcp_fsf_req_free(req); | |
2323 | scsi_cmnd->host_scribble = NULL; | |
2324 | out: | |
2325 | spin_unlock(&adapter->req_q.lock); | |
2326 | return retval; | |
1da177e4 LT |
2327 | } |
2328 | ||
2329 | /** | |
c41f8cbd SS |
2330 | * zfcp_fsf_send_fcp_ctm - send SCSI task management command |
2331 | * @adapter: pointer to struct zfcp-adapter | |
2332 | * @unit: pointer to struct zfcp_unit | |
2333 | * @tm_flags: unsigned byte for task management flags | |
2334 | * @req_flags: int request flags | |
2335 | * Returns: on success pointer to struct fsf_req, NULL otherwise | |
1da177e4 | 2336 | */ |
c41f8cbd SS |
2337 | struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_adapter *adapter, |
2338 | struct zfcp_unit *unit, | |
2339 | u8 tm_flags, int req_flags) | |
1da177e4 LT |
2340 | { |
2341 | volatile struct qdio_buffer_element *sbale; | |
c41f8cbd SS |
2342 | struct zfcp_fsf_req *req = NULL; |
2343 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
1da177e4 | 2344 | |
c41f8cbd SS |
2345 | if (unlikely(!(atomic_read(&unit->status) & |
2346 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2347 | return NULL; | |
1da177e4 | 2348 | |
c41f8cbd SS |
2349 | spin_lock(&adapter->req_q.lock); |
2350 | if (!atomic_read(&adapter->req_q.count)) | |
2351 | goto out; | |
2352 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, | |
2353 | adapter->pool.fsf_req_scsi); | |
2354 | if (unlikely(IS_ERR(req))) | |
2355 | goto out; | |
1da177e4 | 2356 | |
c41f8cbd SS |
2357 | req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT; |
2358 | req->data = unit; | |
2359 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2360 | req->qtcb->header.lun_handle = unit->handle; | |
2361 | req->qtcb->header.port_handle = unit->port->handle; | |
2362 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
2363 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
2364 | req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + | |
2365 | sizeof(fcp_dl_t); | |
2366 | ||
2367 | sbale = zfcp_qdio_sbale_req(req); | |
2368 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE; | |
2369 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 2370 | |
c41f8cbd SS |
2371 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) &req->qtcb->bottom.io.fcp_cmnd; |
2372 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
2373 | fcp_cmnd_iu->task_management_flags = tm_flags; | |
1da177e4 | 2374 | |
c41f8cbd SS |
2375 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); |
2376 | if (!zfcp_fsf_req_send(req)) | |
2377 | goto out; | |
1da177e4 | 2378 | |
c41f8cbd SS |
2379 | zfcp_fsf_req_free(req); |
2380 | req = NULL; | |
2381 | out: | |
2382 | spin_unlock(&adapter->req_q.lock); | |
2383 | return req; | |
2384 | } | |
1da177e4 | 2385 | |
c41f8cbd SS |
2386 | static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req) |
2387 | { | |
2388 | if (req->qtcb->header.fsf_status != FSF_GOOD) | |
2389 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
2390 | } |
2391 | ||
c41f8cbd SS |
2392 | /** |
2393 | * zfcp_fsf_control_file - control file upload/download | |
2394 | * @adapter: pointer to struct zfcp_adapter | |
2395 | * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc | |
2396 | * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise | |
1da177e4 | 2397 | */ |
c41f8cbd SS |
2398 | struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, |
2399 | struct zfcp_fsf_cfdc *fsf_cfdc) | |
1da177e4 | 2400 | { |
1da177e4 | 2401 | volatile struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2402 | struct zfcp_fsf_req *req = NULL; |
2403 | struct fsf_qtcb_bottom_support *bottom; | |
2404 | int direction, retval = -EIO, bytes; | |
2405 | ||
2406 | if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) | |
2407 | return ERR_PTR(-EOPNOTSUPP); | |
2408 | ||
2409 | switch (fsf_cfdc->command) { | |
2410 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
2411 | direction = SBAL_FLAGS0_TYPE_WRITE; | |
2412 | break; | |
2413 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
2414 | direction = SBAL_FLAGS0_TYPE_READ; | |
2415 | break; | |
2416 | default: | |
2417 | return ERR_PTR(-EINVAL); | |
2418 | } | |
1da177e4 | 2419 | |
d4538817 | 2420 | spin_lock_bh(&adapter->req_q.lock); |
c41f8cbd SS |
2421 | if (zfcp_fsf_req_sbal_get(adapter)) |
2422 | goto out; | |
1da177e4 | 2423 | |
c41f8cbd SS |
2424 | req = zfcp_fsf_req_create(adapter, fsf_cfdc->command, 0, NULL); |
2425 | if (unlikely(IS_ERR(req))) { | |
2426 | retval = -EPERM; | |
2427 | goto out; | |
2428 | } | |
1da177e4 | 2429 | |
c41f8cbd | 2430 | req->handler = zfcp_fsf_control_file_handler; |
1da177e4 | 2431 | |
c41f8cbd SS |
2432 | sbale = zfcp_qdio_sbale_req(req); |
2433 | sbale[0].flags |= direction; | |
8a36e453 | 2434 | |
c41f8cbd SS |
2435 | bottom = &req->qtcb->bottom.support; |
2436 | bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE; | |
2437 | bottom->option = fsf_cfdc->option; | |
8a36e453 | 2438 | |
c41f8cbd SS |
2439 | bytes = zfcp_qdio_sbals_from_sg(req, direction, fsf_cfdc->sg, |
2440 | FSF_MAX_SBALS_PER_REQ); | |
2441 | if (bytes != ZFCP_CFDC_MAX_SIZE) { | |
2442 | retval = -ENOMEM; | |
2443 | zfcp_fsf_req_free(req); | |
2444 | goto out; | |
2445 | } | |
1da177e4 | 2446 | |
c41f8cbd SS |
2447 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
2448 | retval = zfcp_fsf_req_send(req); | |
2449 | out: | |
d4538817 | 2450 | spin_unlock_bh(&adapter->req_q.lock); |
8a36e453 | 2451 | |
c41f8cbd SS |
2452 | if (!retval) { |
2453 | wait_event(req->completion_wq, | |
2454 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
2455 | return req; | |
1da177e4 | 2456 | } |
c41f8cbd | 2457 | return ERR_PTR(retval); |
1da177e4 | 2458 | } |