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 | ||
0997f1c5 | 9 | #include <linux/blktrace_api.h> |
1da177e4 LT |
10 | #include "zfcp_ext.h" |
11 | ||
287ac01a CS |
12 | static void zfcp_fsf_request_timeout_handler(unsigned long data) |
13 | { | |
14 | struct zfcp_adapter *adapter = (struct zfcp_adapter *) data; | |
15 | zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, 62, | |
16 | NULL); | |
17 | } | |
18 | ||
19 | static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req, | |
20 | unsigned long timeout) | |
21 | { | |
22 | fsf_req->timer.function = zfcp_fsf_request_timeout_handler; | |
23 | fsf_req->timer.data = (unsigned long) fsf_req->adapter; | |
24 | fsf_req->timer.expires = jiffies + timeout; | |
25 | add_timer(&fsf_req->timer); | |
26 | } | |
27 | ||
28 | static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req) | |
29 | { | |
30 | BUG_ON(!fsf_req->erp_action); | |
31 | fsf_req->timer.function = zfcp_erp_timeout_handler; | |
32 | fsf_req->timer.data = (unsigned long) fsf_req->erp_action; | |
33 | fsf_req->timer.expires = jiffies + 30 * HZ; | |
34 | add_timer(&fsf_req->timer); | |
35 | } | |
36 | ||
1da177e4 LT |
37 | /* association between FSF command and FSF QTCB type */ |
38 | static u32 fsf_qtcb_type[] = { | |
39 | [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND, | |
40 | [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND, | |
41 | [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND, | |
42 | [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND, | |
43 | [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND, | |
44 | [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND, | |
45 | [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND, | |
46 | [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND, | |
47 | [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND, | |
48 | [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND, | |
49 | [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND, | |
50 | [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND, | |
51 | [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND | |
52 | }; | |
53 | ||
553448f6 CS |
54 | static void zfcp_act_eval_err(struct zfcp_adapter *adapter, u32 table) |
55 | { | |
c41f8cbd | 56 | u16 subtable = table >> 16; |
553448f6 | 57 | u16 rule = table & 0xffff; |
ff3b24fa | 58 | const char *act_type[] = { "unknown", "OS", "WWPN", "DID", "LUN" }; |
553448f6 | 59 | |
ff3b24fa | 60 | if (subtable && subtable < ARRAY_SIZE(act_type)) |
553448f6 | 61 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
62 | "Access denied according to ACT rule type %s, " |
63 | "rule %d\n", act_type[subtable], rule); | |
553448f6 CS |
64 | } |
65 | ||
66 | static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req, | |
67 | struct zfcp_port *port) | |
68 | { | |
69 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
70 | dev_warn(&req->adapter->ccw_device->dev, | |
ff3b24fa | 71 | "Access denied to port 0x%016Lx\n", |
7ba58c9c | 72 | (unsigned long long)port->wwpn); |
553448f6 CS |
73 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); |
74 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); | |
75 | zfcp_erp_port_access_denied(port, 55, req); | |
76 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
77 | } | |
78 | ||
79 | static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req *req, | |
80 | struct zfcp_unit *unit) | |
81 | { | |
82 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
83 | dev_warn(&req->adapter->ccw_device->dev, | |
ff3b24fa | 84 | "Access denied to unit 0x%016Lx on port 0x%016Lx\n", |
7ba58c9c SS |
85 | (unsigned long long)unit->fcp_lun, |
86 | (unsigned long long)unit->port->wwpn); | |
553448f6 CS |
87 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); |
88 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); | |
89 | zfcp_erp_unit_access_denied(unit, 59, req); | |
90 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
91 | } | |
92 | ||
93 | static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req) | |
94 | { | |
ff3b24fa CS |
95 | dev_err(&req->adapter->ccw_device->dev, "FCP device not " |
96 | "operational because of an unsupported FC class\n"); | |
553448f6 CS |
97 | zfcp_erp_adapter_shutdown(req->adapter, 0, 123, req); |
98 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
99 | } | |
100 | ||
c41f8cbd SS |
101 | /** |
102 | * zfcp_fsf_req_free - free memory used by fsf request | |
103 | * @fsf_req: pointer to struct zfcp_fsf_req | |
1da177e4 | 104 | */ |
c41f8cbd | 105 | void zfcp_fsf_req_free(struct zfcp_fsf_req *req) |
1da177e4 | 106 | { |
c41f8cbd SS |
107 | if (likely(req->pool)) { |
108 | mempool_free(req, req->pool); | |
dd52e0ea HC |
109 | return; |
110 | } | |
111 | ||
c41f8cbd SS |
112 | if (req->qtcb) { |
113 | kmem_cache_free(zfcp_data.fsf_req_qtcb_cache, req); | |
dd52e0ea HC |
114 | return; |
115 | } | |
1da177e4 LT |
116 | } |
117 | ||
c41f8cbd SS |
118 | /** |
119 | * zfcp_fsf_req_dismiss_all - dismiss all fsf requests | |
120 | * @adapter: pointer to struct zfcp_adapter | |
121 | * | |
869b2b44 MP |
122 | * Never ever call this without shutting down the adapter first. |
123 | * Otherwise the adapter would continue using and corrupting s390 storage. | |
124 | * Included BUG_ON() call to ensure this is done. | |
125 | * ERP is supposed to be the only user of this function. | |
1da177e4 | 126 | */ |
6fcc4711 | 127 | void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter) |
1da177e4 | 128 | { |
c41f8cbd | 129 | struct zfcp_fsf_req *req, *tmp; |
fea9d6c7 | 130 | unsigned long flags; |
6fcc4711 | 131 | LIST_HEAD(remove_queue); |
869b2b44 | 132 | unsigned int i; |
fea9d6c7 | 133 | |
c41f8cbd | 134 | BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP); |
fea9d6c7 | 135 | spin_lock_irqsave(&adapter->req_list_lock, flags); |
869b2b44 | 136 | for (i = 0; i < REQUEST_LIST_SIZE; i++) |
6fcc4711 | 137 | list_splice_init(&adapter->req_list[i], &remove_queue); |
fea9d6c7 VS |
138 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); |
139 | ||
c41f8cbd SS |
140 | list_for_each_entry_safe(req, tmp, &remove_queue, list) { |
141 | list_del(&req->list); | |
142 | req->status |= ZFCP_STATUS_FSFREQ_DISMISSED; | |
143 | zfcp_fsf_req_complete(req); | |
1da177e4 | 144 | } |
1da177e4 LT |
145 | } |
146 | ||
c41f8cbd | 147 | static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req) |
1da177e4 | 148 | { |
c41f8cbd SS |
149 | struct fsf_status_read_buffer *sr_buf = req->data; |
150 | struct zfcp_adapter *adapter = req->adapter; | |
151 | struct zfcp_port *port; | |
152 | int d_id = sr_buf->d_id & ZFCP_DID_MASK; | |
153 | unsigned long flags; | |
1da177e4 | 154 | |
c41f8cbd SS |
155 | read_lock_irqsave(&zfcp_data.config_lock, flags); |
156 | list_for_each_entry(port, &adapter->port_list_head, list) | |
157 | if (port->d_id == d_id) { | |
158 | read_unlock_irqrestore(&zfcp_data.config_lock, flags); | |
159 | switch (sr_buf->status_subtype) { | |
160 | case FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT: | |
161 | zfcp_erp_port_reopen(port, 0, 101, req); | |
162 | break; | |
163 | case FSF_STATUS_READ_SUB_ERROR_PORT: | |
164 | zfcp_erp_port_shutdown(port, 0, 122, req); | |
165 | break; | |
166 | } | |
167 | return; | |
168 | } | |
169 | read_unlock_irqrestore(&zfcp_data.config_lock, flags); | |
1da177e4 LT |
170 | } |
171 | ||
c41f8cbd SS |
172 | static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, u8 id, |
173 | struct fsf_link_down_info *link_down) | |
aef4a983 | 174 | { |
c41f8cbd | 175 | struct zfcp_adapter *adapter = req->adapter; |
698ec016 | 176 | |
c41f8cbd | 177 | if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED) |
ee69ab7a MS |
178 | return; |
179 | ||
180 | atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status); | |
181 | ||
c41f8cbd | 182 | if (!link_down) |
2f8f3ed5 | 183 | goto out; |
ee69ab7a | 184 | |
aef4a983 MS |
185 | switch (link_down->error_code) { |
186 | case FSF_PSQ_LINK_NO_LIGHT: | |
c41f8cbd | 187 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
188 | "There is no light signal from the local " |
189 | "fibre channel cable\n"); | |
aef4a983 MS |
190 | break; |
191 | case FSF_PSQ_LINK_WRAP_PLUG: | |
c41f8cbd | 192 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
193 | "There is a wrap plug instead of a fibre " |
194 | "channel cable\n"); | |
aef4a983 MS |
195 | break; |
196 | case FSF_PSQ_LINK_NO_FCP: | |
c41f8cbd | 197 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
198 | "The adjacent fibre channel node does not " |
199 | "support FCP\n"); | |
aef4a983 MS |
200 | break; |
201 | case FSF_PSQ_LINK_FIRMWARE_UPDATE: | |
c41f8cbd | 202 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
203 | "The FCP device is suspended because of a " |
204 | "firmware update\n"); | |
553448f6 | 205 | break; |
aef4a983 | 206 | case FSF_PSQ_LINK_INVALID_WWPN: |
c41f8cbd | 207 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
208 | "The FCP device detected a WWPN that is " |
209 | "duplicate or not valid\n"); | |
aef4a983 MS |
210 | break; |
211 | case FSF_PSQ_LINK_NO_NPIV_SUPPORT: | |
c41f8cbd | 212 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 213 | "The fibre channel fabric does not support NPIV\n"); |
aef4a983 MS |
214 | break; |
215 | case FSF_PSQ_LINK_NO_FCP_RESOURCES: | |
c41f8cbd | 216 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 217 | "The FCP adapter cannot support more NPIV ports\n"); |
aef4a983 MS |
218 | break; |
219 | case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: | |
c41f8cbd | 220 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
221 | "The adjacent switch cannot support " |
222 | "more NPIV ports\n"); | |
aef4a983 MS |
223 | break; |
224 | case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: | |
c41f8cbd | 225 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
226 | "The FCP adapter could not log in to the " |
227 | "fibre channel fabric\n"); | |
aef4a983 MS |
228 | break; |
229 | case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: | |
c41f8cbd | 230 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
231 | "The WWPN assignment file on the FCP adapter " |
232 | "has been damaged\n"); | |
aef4a983 MS |
233 | break; |
234 | case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: | |
c41f8cbd | 235 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
236 | "The mode table on the FCP adapter " |
237 | "has been damaged\n"); | |
aef4a983 MS |
238 | break; |
239 | case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: | |
c41f8cbd | 240 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
241 | "All NPIV ports on the FCP adapter have " |
242 | "been assigned\n"); | |
aef4a983 MS |
243 | break; |
244 | default: | |
c41f8cbd | 245 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
246 | "The link between the FCP adapter and " |
247 | "the FC fabric is down\n"); | |
aef4a983 | 248 | } |
c41f8cbd SS |
249 | out: |
250 | zfcp_erp_adapter_failed(adapter, id, req); | |
aef4a983 MS |
251 | } |
252 | ||
c41f8cbd | 253 | static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req) |
1da177e4 | 254 | { |
c41f8cbd SS |
255 | struct fsf_status_read_buffer *sr_buf = req->data; |
256 | struct fsf_link_down_info *ldi = | |
257 | (struct fsf_link_down_info *) &sr_buf->payload; | |
1da177e4 | 258 | |
c41f8cbd SS |
259 | switch (sr_buf->status_subtype) { |
260 | case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: | |
c41f8cbd | 261 | zfcp_fsf_link_down_info_eval(req, 38, ldi); |
1da177e4 | 262 | break; |
c41f8cbd | 263 | case FSF_STATUS_READ_SUB_FDISC_FAILED: |
c41f8cbd | 264 | zfcp_fsf_link_down_info_eval(req, 39, ldi); |
1da177e4 | 265 | break; |
c41f8cbd | 266 | case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE: |
c41f8cbd SS |
267 | zfcp_fsf_link_down_info_eval(req, 40, NULL); |
268 | }; | |
269 | } | |
1da177e4 | 270 | |
c41f8cbd SS |
271 | static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) |
272 | { | |
273 | struct zfcp_adapter *adapter = req->adapter; | |
274 | struct fsf_status_read_buffer *sr_buf = req->data; | |
1da177e4 | 275 | |
c41f8cbd SS |
276 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
277 | zfcp_hba_dbf_event_fsf_unsol("dism", adapter, sr_buf); | |
278 | mempool_free(sr_buf, adapter->pool.data_status_read); | |
279 | zfcp_fsf_req_free(req); | |
280 | return; | |
281 | } | |
1da177e4 | 282 | |
c41f8cbd | 283 | zfcp_hba_dbf_event_fsf_unsol("read", adapter, sr_buf); |
1da177e4 | 284 | |
c41f8cbd SS |
285 | switch (sr_buf->status_type) { |
286 | case FSF_STATUS_READ_PORT_CLOSED: | |
287 | zfcp_fsf_status_read_port_closed(req); | |
1da177e4 | 288 | break; |
c41f8cbd SS |
289 | case FSF_STATUS_READ_INCOMING_ELS: |
290 | zfcp_fc_incoming_els(req); | |
1da177e4 | 291 | break; |
c41f8cbd | 292 | case FSF_STATUS_READ_SENSE_DATA_AVAIL: |
1da177e4 | 293 | break; |
c41f8cbd | 294 | case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: |
ff3b24fa CS |
295 | dev_warn(&adapter->ccw_device->dev, |
296 | "The error threshold for checksum statistics " | |
297 | "has been exceeded\n"); | |
57069386 | 298 | zfcp_hba_dbf_event_berr(adapter, req); |
1da177e4 | 299 | break; |
c41f8cbd SS |
300 | case FSF_STATUS_READ_LINK_DOWN: |
301 | zfcp_fsf_status_read_link_down(req); | |
302 | break; | |
303 | case FSF_STATUS_READ_LINK_UP: | |
304 | dev_info(&adapter->ccw_device->dev, | |
ff3b24fa | 305 | "The local link has been restored\n"); |
c41f8cbd SS |
306 | /* All ports should be marked as ready to run again */ |
307 | zfcp_erp_modify_adapter_status(adapter, 30, NULL, | |
308 | ZFCP_STATUS_COMMON_RUNNING, | |
309 | ZFCP_SET); | |
310 | zfcp_erp_adapter_reopen(adapter, | |
311 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
312 | ZFCP_STATUS_COMMON_ERP_FAILED, | |
313 | 102, req); | |
314 | break; | |
315 | case FSF_STATUS_READ_NOTIFICATION_LOST: | |
316 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED) | |
317 | zfcp_erp_adapter_access_changed(adapter, 135, req); | |
318 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS) | |
319 | schedule_work(&adapter->scan_work); | |
320 | break; | |
321 | case FSF_STATUS_READ_CFDC_UPDATED: | |
322 | zfcp_erp_adapter_access_changed(adapter, 136, req); | |
323 | break; | |
324 | case FSF_STATUS_READ_FEATURE_UPDATE_ALERT: | |
325 | adapter->adapter_features = sr_buf->payload.word[0]; | |
1da177e4 | 326 | break; |
1da177e4 LT |
327 | } |
328 | ||
c41f8cbd SS |
329 | mempool_free(sr_buf, adapter->pool.data_status_read); |
330 | zfcp_fsf_req_free(req); | |
1da177e4 | 331 | |
c41f8cbd | 332 | atomic_inc(&adapter->stat_miss); |
b7f15f3c | 333 | queue_work(zfcp_data.work_queue, &adapter->stat_work); |
c41f8cbd | 334 | } |
1da177e4 | 335 | |
c41f8cbd SS |
336 | static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req) |
337 | { | |
338 | switch (req->qtcb->header.fsf_status_qual.word[0]) { | |
339 | case FSF_SQ_FCP_RSP_AVAILABLE: | |
340 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
341 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
342 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
343 | return; | |
344 | case FSF_SQ_COMMAND_ABORTED: | |
345 | req->status |= ZFCP_STATUS_FSFREQ_ABORTED; | |
346 | break; | |
347 | case FSF_SQ_NO_RECOM: | |
348 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
349 | "The FCP adapter reported a problem " |
350 | "that cannot be recovered\n"); | |
c41f8cbd SS |
351 | zfcp_erp_adapter_shutdown(req->adapter, 0, 121, req); |
352 | break; | |
353 | } | |
354 | /* all non-return stats set FSFREQ_ERROR*/ | |
355 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
356 | } |
357 | ||
c41f8cbd | 358 | static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req) |
1da177e4 | 359 | { |
c41f8cbd SS |
360 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
361 | return; | |
1da177e4 | 362 | |
c41f8cbd SS |
363 | switch (req->qtcb->header.fsf_status) { |
364 | case FSF_UNKNOWN_COMMAND: | |
365 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa | 366 | "The FCP adapter does not recognize the command 0x%x\n", |
c41f8cbd SS |
367 | req->qtcb->header.fsf_command); |
368 | zfcp_erp_adapter_shutdown(req->adapter, 0, 120, req); | |
369 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
370 | break; | |
371 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
372 | zfcp_fsf_fsfstatus_qual_eval(req); | |
373 | break; | |
374 | } | |
375 | } | |
1da177e4 | 376 | |
c41f8cbd SS |
377 | static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) |
378 | { | |
379 | struct zfcp_adapter *adapter = req->adapter; | |
380 | struct fsf_qtcb *qtcb = req->qtcb; | |
381 | union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual; | |
1da177e4 | 382 | |
c41f8cbd | 383 | zfcp_hba_dbf_event_fsf_response(req); |
1da177e4 | 384 | |
c41f8cbd SS |
385 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
386 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
387 | ZFCP_STATUS_FSFREQ_RETRY; /* only for SCSI cmnds. */ | |
388 | return; | |
389 | } | |
1da177e4 | 390 | |
c41f8cbd SS |
391 | switch (qtcb->prefix.prot_status) { |
392 | case FSF_PROT_GOOD: | |
393 | case FSF_PROT_FSF_STATUS_PRESENTED: | |
394 | return; | |
395 | case FSF_PROT_QTCB_VERSION_ERROR: | |
396 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
397 | "QTCB version 0x%x not supported by FCP adapter " |
398 | "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION, | |
399 | psq->word[0], psq->word[1]); | |
c41f8cbd SS |
400 | zfcp_erp_adapter_shutdown(adapter, 0, 117, req); |
401 | break; | |
402 | case FSF_PROT_ERROR_STATE: | |
403 | case FSF_PROT_SEQ_NUMB_ERROR: | |
404 | zfcp_erp_adapter_reopen(adapter, 0, 98, req); | |
405 | req->status |= ZFCP_STATUS_FSFREQ_RETRY; | |
406 | break; | |
407 | case FSF_PROT_UNSUPP_QTCB_TYPE: | |
408 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 409 | "The QTCB type is not supported by the FCP adapter\n"); |
c41f8cbd SS |
410 | zfcp_erp_adapter_shutdown(adapter, 0, 118, req); |
411 | break; | |
412 | case FSF_PROT_HOST_CONNECTION_INITIALIZING: | |
413 | atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT, | |
414 | &adapter->status); | |
415 | break; | |
416 | case FSF_PROT_DUPLICATE_REQUEST_ID: | |
417 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 418 | "0x%Lx is an ambiguous request identifier\n", |
c41f8cbd SS |
419 | (unsigned long long)qtcb->bottom.support.req_handle); |
420 | zfcp_erp_adapter_shutdown(adapter, 0, 78, req); | |
421 | break; | |
422 | case FSF_PROT_LINK_DOWN: | |
423 | zfcp_fsf_link_down_info_eval(req, 37, &psq->link_down_info); | |
424 | /* FIXME: reopening adapter now? better wait for link up */ | |
425 | zfcp_erp_adapter_reopen(adapter, 0, 79, req); | |
426 | break; | |
427 | case FSF_PROT_REEST_QUEUE: | |
428 | /* All ports should be marked as ready to run again */ | |
429 | zfcp_erp_modify_adapter_status(adapter, 28, NULL, | |
430 | ZFCP_STATUS_COMMON_RUNNING, | |
431 | ZFCP_SET); | |
432 | zfcp_erp_adapter_reopen(adapter, | |
433 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
434 | ZFCP_STATUS_COMMON_ERP_FAILED, 99, req); | |
435 | break; | |
436 | default: | |
437 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 438 | "0x%x is not a valid transfer protocol status\n", |
c41f8cbd SS |
439 | qtcb->prefix.prot_status); |
440 | zfcp_erp_adapter_shutdown(adapter, 0, 119, req); | |
441 | } | |
442 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
443 | } |
444 | ||
c41f8cbd SS |
445 | /** |
446 | * zfcp_fsf_req_complete - process completion of a FSF request | |
447 | * @fsf_req: The FSF request that has been completed. | |
448 | * | |
449 | * When a request has been completed either from the FCP adapter, | |
450 | * or it has been dismissed due to a queue shutdown, this function | |
451 | * is called to process the completion status and trigger further | |
452 | * events related to the FSF request. | |
453 | */ | |
454 | void zfcp_fsf_req_complete(struct zfcp_fsf_req *req) | |
1da177e4 | 455 | { |
c41f8cbd SS |
456 | if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) { |
457 | zfcp_fsf_status_read_handler(req); | |
458 | return; | |
459 | } | |
1da177e4 | 460 | |
c41f8cbd SS |
461 | del_timer(&req->timer); |
462 | zfcp_fsf_protstatus_eval(req); | |
463 | zfcp_fsf_fsfstatus_eval(req); | |
464 | req->handler(req); | |
1da177e4 | 465 | |
c41f8cbd | 466 | if (req->erp_action) |
287ac01a | 467 | zfcp_erp_notify(req->erp_action, 0); |
c41f8cbd | 468 | req->status |= ZFCP_STATUS_FSFREQ_COMPLETED; |
1da177e4 | 469 | |
c41f8cbd SS |
470 | if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP)) |
471 | zfcp_fsf_req_free(req); | |
472 | else | |
473 | /* notify initiator waiting for the requests completion */ | |
474 | /* | |
475 | * FIXME: Race! We must not access fsf_req here as it might have been | |
476 | * cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED | |
477 | * flag. It's an improbable case. But, we have the same paranoia for | |
478 | * the cleanup flag already. | |
479 | * Might better be handled using complete()? | |
480 | * (setting the flag and doing wakeup ought to be atomic | |
481 | * with regard to checking the flag as long as waitqueue is | |
482 | * part of the to be released structure) | |
483 | */ | |
484 | wake_up(&req->completion_wq); | |
485 | } | |
1da177e4 | 486 | |
c41f8cbd SS |
487 | static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req) |
488 | { | |
489 | struct fsf_qtcb_bottom_config *bottom; | |
490 | struct zfcp_adapter *adapter = req->adapter; | |
491 | struct Scsi_Host *shost = adapter->scsi_host; | |
1da177e4 | 492 | |
c41f8cbd | 493 | bottom = &req->qtcb->bottom.config; |
1da177e4 | 494 | |
c41f8cbd SS |
495 | if (req->data) |
496 | memcpy(req->data, bottom, sizeof(*bottom)); | |
497 | ||
498 | fc_host_node_name(shost) = bottom->nport_serv_param.wwnn; | |
499 | fc_host_port_name(shost) = bottom->nport_serv_param.wwpn; | |
500 | fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK; | |
501 | fc_host_speed(shost) = bottom->fc_link_speed; | |
502 | fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3; | |
503 | ||
504 | adapter->hydra_version = bottom->adapter_type; | |
505 | adapter->timer_ticks = bottom->timer_interval; | |
506 | ||
507 | if (fc_host_permanent_port_name(shost) == -1) | |
508 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
509 | ||
510 | switch (bottom->fc_topology) { | |
511 | case FSF_TOPO_P2P: | |
512 | adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK; | |
513 | adapter->peer_wwpn = bottom->plogi_payload.wwpn; | |
514 | adapter->peer_wwnn = bottom->plogi_payload.wwnn; | |
515 | fc_host_port_type(shost) = FC_PORTTYPE_PTP; | |
c41f8cbd SS |
516 | break; |
517 | case FSF_TOPO_FABRIC: | |
518 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
c41f8cbd SS |
519 | break; |
520 | case FSF_TOPO_AL: | |
521 | fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; | |
c41f8cbd | 522 | default: |
c41f8cbd | 523 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
524 | "Unknown or unsupported arbitrated loop " |
525 | "fibre channel topology detected\n"); | |
526 | zfcp_erp_adapter_shutdown(adapter, 0, 127, req); | |
c41f8cbd | 527 | return -EIO; |
1da177e4 | 528 | } |
c41f8cbd | 529 | |
1da177e4 LT |
530 | return 0; |
531 | } | |
532 | ||
c41f8cbd | 533 | static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) |
553448f6 CS |
534 | { |
535 | struct zfcp_adapter *adapter = req->adapter; | |
c41f8cbd SS |
536 | struct fsf_qtcb *qtcb = req->qtcb; |
537 | struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config; | |
538 | struct Scsi_Host *shost = adapter->scsi_host; | |
553448f6 | 539 | |
c41f8cbd SS |
540 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
541 | return; | |
1da177e4 | 542 | |
c41f8cbd SS |
543 | adapter->fsf_lic_version = bottom->lic_version; |
544 | adapter->adapter_features = bottom->adapter_features; | |
545 | adapter->connection_features = bottom->connection_features; | |
546 | adapter->peer_wwpn = 0; | |
547 | adapter->peer_wwnn = 0; | |
548 | adapter->peer_d_id = 0; | |
8a36e453 | 549 | |
c41f8cbd SS |
550 | switch (qtcb->header.fsf_status) { |
551 | case FSF_GOOD: | |
552 | if (zfcp_fsf_exchange_config_evaluate(req)) | |
553 | return; | |
1da177e4 | 554 | |
c41f8cbd SS |
555 | if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { |
556 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
557 | "FCP adapter maximum QTCB size (%d bytes) " |
558 | "is too small\n", | |
559 | bottom->max_qtcb_size); | |
c41f8cbd SS |
560 | zfcp_erp_adapter_shutdown(adapter, 0, 129, req); |
561 | return; | |
562 | } | |
563 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, | |
564 | &adapter->status); | |
1da177e4 | 565 | break; |
c41f8cbd SS |
566 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
567 | fc_host_node_name(shost) = 0; | |
568 | fc_host_port_name(shost) = 0; | |
569 | fc_host_port_id(shost) = 0; | |
570 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; | |
571 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; | |
572 | adapter->hydra_version = 0; | |
1da177e4 | 573 | |
c41f8cbd SS |
574 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, |
575 | &adapter->status); | |
1da177e4 | 576 | |
c41f8cbd SS |
577 | zfcp_fsf_link_down_info_eval(req, 42, |
578 | &qtcb->header.fsf_status_qual.link_down_info); | |
1da177e4 | 579 | break; |
c41f8cbd SS |
580 | default: |
581 | zfcp_erp_adapter_shutdown(adapter, 0, 130, req); | |
582 | return; | |
583 | } | |
1da177e4 | 584 | |
c41f8cbd SS |
585 | if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) { |
586 | adapter->hardware_version = bottom->hardware_version; | |
587 | memcpy(fc_host_serial_number(shost), bottom->serial_number, | |
588 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
589 | EBCASC(fc_host_serial_number(shost), | |
590 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
591 | } | |
1da177e4 | 592 | |
c41f8cbd SS |
593 | if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) { |
594 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
595 | "The FCP adapter only supports newer " |
596 | "control block versions\n"); | |
c41f8cbd SS |
597 | zfcp_erp_adapter_shutdown(adapter, 0, 125, req); |
598 | return; | |
599 | } | |
600 | if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) { | |
601 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
602 | "The FCP adapter only supports older " |
603 | "control block versions\n"); | |
c41f8cbd SS |
604 | zfcp_erp_adapter_shutdown(adapter, 0, 126, req); |
605 | } | |
606 | } | |
1da177e4 | 607 | |
c41f8cbd SS |
608 | static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req) |
609 | { | |
610 | struct zfcp_adapter *adapter = req->adapter; | |
611 | struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port; | |
612 | struct Scsi_Host *shost = adapter->scsi_host; | |
1da177e4 | 613 | |
c41f8cbd SS |
614 | if (req->data) |
615 | memcpy(req->data, bottom, sizeof(*bottom)); | |
9eb69aff | 616 | |
c41f8cbd SS |
617 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) |
618 | fc_host_permanent_port_name(shost) = bottom->wwpn; | |
619 | else | |
620 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
621 | fc_host_maxframe_size(shost) = bottom->maximum_frame_size; | |
622 | fc_host_supported_speeds(shost) = bottom->supported_speed; | |
623 | } | |
1da177e4 | 624 | |
c41f8cbd SS |
625 | static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) |
626 | { | |
c41f8cbd SS |
627 | struct fsf_qtcb *qtcb = req->qtcb; |
628 | ||
629 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
630 | return; | |
631 | ||
632 | switch (qtcb->header.fsf_status) { | |
633 | case FSF_GOOD: | |
634 | zfcp_fsf_exchange_port_evaluate(req); | |
c41f8cbd SS |
635 | break; |
636 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: | |
637 | zfcp_fsf_exchange_port_evaluate(req); | |
c41f8cbd SS |
638 | zfcp_fsf_link_down_info_eval(req, 43, |
639 | &qtcb->header.fsf_status_qual.link_down_info); | |
aef4a983 | 640 | break; |
1da177e4 | 641 | } |
c41f8cbd | 642 | } |
d26ab06e | 643 | |
0406289e | 644 | static int zfcp_fsf_sbal_check(struct zfcp_adapter *adapter) |
c41f8cbd | 645 | { |
0406289e CS |
646 | struct zfcp_qdio_queue *req_q = &adapter->req_q; |
647 | ||
648 | spin_lock_bh(&adapter->req_q_lock); | |
649 | if (atomic_read(&req_q->count)) | |
c41f8cbd | 650 | return 1; |
0406289e | 651 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 652 | return 0; |
1da177e4 LT |
653 | } |
654 | ||
2450d3e7 SR |
655 | static int zfcp_fsf_sbal_available(struct zfcp_adapter *adapter) |
656 | { | |
657 | unsigned int count = atomic_read(&adapter->req_q.count); | |
658 | if (!count) | |
659 | atomic_inc(&adapter->qdio_outb_full); | |
660 | return count > 0; | |
661 | } | |
662 | ||
c41f8cbd SS |
663 | static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter) |
664 | { | |
665 | long ret; | |
c41f8cbd | 666 | |
0406289e | 667 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 668 | ret = wait_event_interruptible_timeout(adapter->request_wq, |
0406289e | 669 | zfcp_fsf_sbal_check(adapter), 5 * HZ); |
c41f8cbd SS |
670 | if (ret > 0) |
671 | return 0; | |
2450d3e7 SR |
672 | if (!ret) |
673 | atomic_inc(&adapter->qdio_outb_full); | |
c41f8cbd | 674 | |
0406289e | 675 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
676 | return -EIO; |
677 | } | |
678 | ||
679 | static struct zfcp_fsf_req *zfcp_fsf_alloc_noqtcb(mempool_t *pool) | |
680 | { | |
681 | struct zfcp_fsf_req *req; | |
682 | req = mempool_alloc(pool, GFP_ATOMIC); | |
683 | if (!req) | |
684 | return NULL; | |
685 | memset(req, 0, sizeof(*req)); | |
686 | return req; | |
687 | } | |
688 | ||
689 | static struct zfcp_fsf_req *zfcp_fsf_alloc_qtcb(mempool_t *pool) | |
690 | { | |
691 | struct zfcp_fsf_req_qtcb *qtcb; | |
692 | ||
693 | if (likely(pool)) | |
694 | qtcb = mempool_alloc(pool, GFP_ATOMIC); | |
695 | else | |
696 | qtcb = kmem_cache_alloc(zfcp_data.fsf_req_qtcb_cache, | |
697 | GFP_ATOMIC); | |
698 | if (unlikely(!qtcb)) | |
699 | return NULL; | |
700 | ||
701 | memset(qtcb, 0, sizeof(*qtcb)); | |
702 | qtcb->fsf_req.qtcb = &qtcb->qtcb; | |
703 | qtcb->fsf_req.pool = pool; | |
704 | ||
705 | return &qtcb->fsf_req; | |
706 | } | |
707 | ||
708 | static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter, | |
709 | u32 fsf_cmd, int req_flags, | |
710 | mempool_t *pool) | |
1da177e4 | 711 | { |
44cc76f2 | 712 | struct qdio_buffer_element *sbale; |
1da177e4 | 713 | |
c41f8cbd SS |
714 | struct zfcp_fsf_req *req; |
715 | struct zfcp_qdio_queue *req_q = &adapter->req_q; | |
951f746f | 716 | |
c41f8cbd SS |
717 | if (req_flags & ZFCP_REQ_NO_QTCB) |
718 | req = zfcp_fsf_alloc_noqtcb(pool); | |
719 | else | |
720 | req = zfcp_fsf_alloc_qtcb(pool); | |
1da177e4 | 721 | |
c41f8cbd SS |
722 | if (unlikely(!req)) |
723 | return ERR_PTR(-EIO); | |
1da177e4 | 724 | |
c41f8cbd SS |
725 | if (adapter->req_no == 0) |
726 | adapter->req_no++; | |
1da177e4 | 727 | |
c41f8cbd SS |
728 | INIT_LIST_HEAD(&req->list); |
729 | init_timer(&req->timer); | |
730 | init_waitqueue_head(&req->completion_wq); | |
1da177e4 | 731 | |
c41f8cbd SS |
732 | req->adapter = adapter; |
733 | req->fsf_command = fsf_cmd; | |
734 | req->req_id = adapter->req_no++; | |
735 | req->sbal_number = 1; | |
736 | req->sbal_first = req_q->first; | |
737 | req->sbal_last = req_q->first; | |
738 | req->sbale_curr = 1; | |
739 | ||
740 | sbale = zfcp_qdio_sbale_req(req); | |
741 | sbale[0].addr = (void *) req->req_id; | |
742 | sbale[0].flags |= SBAL_FLAGS0_COMMAND; | |
743 | ||
744 | if (likely(req->qtcb)) { | |
745 | req->qtcb->prefix.req_seq_no = req->adapter->fsf_req_seq_no; | |
746 | req->qtcb->prefix.req_id = req->req_id; | |
747 | req->qtcb->prefix.ulp_info = 26; | |
748 | req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command]; | |
749 | req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION; | |
750 | req->qtcb->header.req_handle = req->req_id; | |
751 | req->qtcb->header.fsf_command = req->fsf_command; | |
752 | req->seq_no = adapter->fsf_req_seq_no; | |
753 | req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; | |
754 | sbale[1].addr = (void *) req->qtcb; | |
755 | sbale[1].length = sizeof(struct fsf_qtcb); | |
756 | } | |
757 | ||
758 | if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) { | |
759 | zfcp_fsf_req_free(req); | |
760 | return ERR_PTR(-EIO); | |
761 | } | |
951f746f | 762 | |
c41f8cbd SS |
763 | if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP)) |
764 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; | |
1da177e4 | 765 | |
c41f8cbd | 766 | return req; |
1da177e4 LT |
767 | } |
768 | ||
c41f8cbd SS |
769 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) |
770 | { | |
771 | struct zfcp_adapter *adapter = req->adapter; | |
772 | struct zfcp_qdio_queue *req_q = &adapter->req_q; | |
45316a86 | 773 | unsigned long flags; |
c41f8cbd SS |
774 | int idx; |
775 | ||
776 | /* put allocated FSF request into hash table */ | |
45316a86 | 777 | spin_lock_irqsave(&adapter->req_list_lock, flags); |
c41f8cbd SS |
778 | idx = zfcp_reqlist_hash(req->req_id); |
779 | list_add_tail(&req->list, &adapter->req_list[idx]); | |
45316a86 | 780 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); |
c41f8cbd | 781 | |
0997f1c5 | 782 | req->qdio_outb_usage = atomic_read(&req_q->count); |
c41f8cbd SS |
783 | req->issued = get_clock(); |
784 | if (zfcp_qdio_send(req)) { | |
785 | /* Queues are down..... */ | |
786 | del_timer(&req->timer); | |
787 | spin_lock(&adapter->req_list_lock); | |
788 | zfcp_reqlist_remove(adapter, req); | |
789 | spin_unlock(&adapter->req_list_lock); | |
790 | /* undo changes in request queue made for this request */ | |
791 | atomic_add(req->sbal_number, &req_q->count); | |
792 | req_q->first -= req->sbal_number; | |
793 | req_q->first += QDIO_MAX_BUFFERS_PER_Q; | |
794 | req_q->first %= QDIO_MAX_BUFFERS_PER_Q; /* wrap */ | |
795 | zfcp_erp_adapter_reopen(adapter, 0, 116, req); | |
796 | return -EIO; | |
797 | } | |
798 | ||
799 | /* Don't increase for unsolicited status */ | |
800 | if (req->qtcb) | |
801 | adapter->fsf_req_seq_no++; | |
802 | ||
803 | return 0; | |
804 | } | |
805 | ||
806 | /** | |
807 | * zfcp_fsf_status_read - send status read request | |
808 | * @adapter: pointer to struct zfcp_adapter | |
809 | * @req_flags: request flags | |
810 | * Returns: 0 on success, ERROR otherwise | |
1da177e4 | 811 | */ |
c41f8cbd | 812 | int zfcp_fsf_status_read(struct zfcp_adapter *adapter) |
1da177e4 | 813 | { |
c41f8cbd SS |
814 | struct zfcp_fsf_req *req; |
815 | struct fsf_status_read_buffer *sr_buf; | |
44cc76f2 | 816 | struct qdio_buffer_element *sbale; |
c41f8cbd | 817 | int retval = -EIO; |
1da177e4 | 818 | |
0406289e | 819 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
820 | if (zfcp_fsf_req_sbal_get(adapter)) |
821 | goto out; | |
822 | ||
823 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS, | |
824 | ZFCP_REQ_NO_QTCB, | |
825 | adapter->pool.fsf_req_status_read); | |
025270f0 | 826 | if (IS_ERR(req)) { |
c41f8cbd SS |
827 | retval = PTR_ERR(req); |
828 | goto out; | |
1da177e4 LT |
829 | } |
830 | ||
c41f8cbd SS |
831 | sbale = zfcp_qdio_sbale_req(req); |
832 | sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS; | |
833 | sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY; | |
834 | req->sbale_curr = 2; | |
835 | ||
836 | sr_buf = mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC); | |
837 | if (!sr_buf) { | |
838 | retval = -ENOMEM; | |
839 | goto failed_buf; | |
840 | } | |
841 | memset(sr_buf, 0, sizeof(*sr_buf)); | |
842 | req->data = sr_buf; | |
843 | sbale = zfcp_qdio_sbale_curr(req); | |
844 | sbale->addr = (void *) sr_buf; | |
845 | sbale->length = sizeof(*sr_buf); | |
059c97d0 | 846 | |
c41f8cbd SS |
847 | retval = zfcp_fsf_req_send(req); |
848 | if (retval) | |
849 | goto failed_req_send; | |
1da177e4 | 850 | |
c41f8cbd SS |
851 | goto out; |
852 | ||
853 | failed_req_send: | |
854 | mempool_free(sr_buf, adapter->pool.data_status_read); | |
855 | failed_buf: | |
856 | zfcp_fsf_req_free(req); | |
857 | zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL); | |
858 | out: | |
0406289e | 859 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
860 | return retval; |
861 | } | |
862 | ||
863 | static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req) | |
864 | { | |
865 | struct zfcp_unit *unit = req->data; | |
866 | union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual; | |
867 | ||
868 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
869 | return; | |
870 | ||
871 | switch (req->qtcb->header.fsf_status) { | |
1da177e4 | 872 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd | 873 | if (fsq->word[0] == fsq->word[1]) { |
9467a9b3 | 874 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 104, |
c41f8cbd SS |
875 | req); |
876 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
877 | } |
878 | break; | |
1da177e4 | 879 | case FSF_LUN_HANDLE_NOT_VALID: |
c41f8cbd SS |
880 | if (fsq->word[0] == fsq->word[1]) { |
881 | zfcp_erp_port_reopen(unit->port, 0, 105, req); | |
882 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
883 | } |
884 | break; | |
1da177e4 | 885 | case FSF_FCP_COMMAND_DOES_NOT_EXIST: |
c41f8cbd | 886 | req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED; |
1da177e4 | 887 | break; |
1da177e4 | 888 | case FSF_PORT_BOXED: |
c41f8cbd SS |
889 | zfcp_erp_port_boxed(unit->port, 47, req); |
890 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
891 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 892 | break; |
1da177e4 | 893 | case FSF_LUN_BOXED: |
c41f8cbd SS |
894 | zfcp_erp_unit_boxed(unit, 48, req); |
895 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
896 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 897 | break; |
1da177e4 | 898 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 899 | switch (fsq->word[0]) { |
1da177e4 | 900 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
65a8d4e1 | 901 | zfcp_test_link(unit->port); |
1da177e4 | 902 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 903 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 904 | break; |
1da177e4 LT |
905 | } |
906 | break; | |
1da177e4 | 907 | case FSF_GOOD: |
c41f8cbd | 908 | req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED; |
1da177e4 | 909 | break; |
1da177e4 | 910 | } |
1da177e4 LT |
911 | } |
912 | ||
913 | /** | |
c41f8cbd SS |
914 | * zfcp_fsf_abort_fcp_command - abort running SCSI command |
915 | * @old_req_id: unsigned long | |
916 | * @adapter: pointer to struct zfcp_adapter | |
917 | * @unit: pointer to struct zfcp_unit | |
918 | * @req_flags: integer specifying the request flags | |
919 | * Returns: pointer to struct zfcp_fsf_req | |
920 | * | |
921 | * FIXME(design): should be watched by a timeout !!! | |
1da177e4 | 922 | */ |
1da177e4 | 923 | |
c41f8cbd SS |
924 | struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id, |
925 | struct zfcp_adapter *adapter, | |
926 | struct zfcp_unit *unit, | |
927 | int req_flags) | |
1da177e4 | 928 | { |
44cc76f2 | 929 | struct qdio_buffer_element *sbale; |
c41f8cbd | 930 | struct zfcp_fsf_req *req = NULL; |
8a36e453 | 931 | |
0406289e | 932 | spin_lock(&adapter->req_q_lock); |
2450d3e7 | 933 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd SS |
934 | goto out; |
935 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND, | |
936 | req_flags, adapter->pool.fsf_req_abort); | |
025270f0 | 937 | if (IS_ERR(req)) |
c41f8cbd | 938 | goto out; |
2abbe866 | 939 | |
c41f8cbd SS |
940 | if (unlikely(!(atomic_read(&unit->status) & |
941 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
942 | goto out_error_free; | |
1da177e4 | 943 | |
c41f8cbd SS |
944 | sbale = zfcp_qdio_sbale_req(req); |
945 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
946 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 947 | |
c41f8cbd SS |
948 | req->data = unit; |
949 | req->handler = zfcp_fsf_abort_fcp_command_handler; | |
950 | req->qtcb->header.lun_handle = unit->handle; | |
951 | req->qtcb->header.port_handle = unit->port->handle; | |
952 | req->qtcb->bottom.support.req_handle = (u64) old_req_id; | |
953 | ||
954 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); | |
955 | if (!zfcp_fsf_req_send(req)) | |
956 | goto out; | |
957 | ||
958 | out_error_free: | |
959 | zfcp_fsf_req_free(req); | |
960 | req = NULL; | |
961 | out: | |
0406289e | 962 | spin_unlock(&adapter->req_q_lock); |
c41f8cbd | 963 | return req; |
1da177e4 LT |
964 | } |
965 | ||
c41f8cbd | 966 | static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) |
1da177e4 | 967 | { |
c41f8cbd SS |
968 | struct zfcp_adapter *adapter = req->adapter; |
969 | struct zfcp_send_ct *send_ct = req->data; | |
c41f8cbd | 970 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1da177e4 | 971 | |
c41f8cbd | 972 | send_ct->status = -EINVAL; |
1da177e4 | 973 | |
c41f8cbd | 974 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
975 | goto skip_fsfstatus; |
976 | ||
1da177e4 | 977 | switch (header->fsf_status) { |
1da177e4 | 978 | case FSF_GOOD: |
c41f8cbd SS |
979 | zfcp_san_dbf_event_ct_response(req); |
980 | send_ct->status = 0; | |
1da177e4 | 981 | break; |
1da177e4 | 982 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 983 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 984 | break; |
1da177e4 | 985 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
986 | switch (header->fsf_status_qual.word[0]){ |
987 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 988 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 989 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 990 | break; |
1da177e4 LT |
991 | } |
992 | break; | |
1da177e4 | 993 | case FSF_ACCESS_DENIED: |
1da177e4 | 994 | break; |
1da177e4 | 995 | case FSF_PORT_BOXED: |
c41f8cbd SS |
996 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
997 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 998 | break; |
c41f8cbd SS |
999 | case FSF_PORT_HANDLE_NOT_VALID: |
1000 | zfcp_erp_adapter_reopen(adapter, 0, 106, req); | |
1001 | case FSF_GENERIC_COMMAND_REJECTED: | |
1da177e4 | 1002 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1003 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1004 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1005 | case FSF_SBAL_MISMATCH: |
c41f8cbd | 1006 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1007 | break; |
1008 | } | |
1009 | ||
1010 | skip_fsfstatus: | |
c41f8cbd | 1011 | if (send_ct->handler) |
1da177e4 | 1012 | send_ct->handler(send_ct->handler_data); |
c41f8cbd | 1013 | } |
1da177e4 | 1014 | |
c41f8cbd SS |
1015 | static int zfcp_fsf_setup_sbals(struct zfcp_fsf_req *req, |
1016 | struct scatterlist *sg_req, | |
1017 | struct scatterlist *sg_resp, int max_sbals) | |
1018 | { | |
1019 | int bytes; | |
1020 | ||
1021 | bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, | |
1022 | sg_req, max_sbals); | |
1023 | if (bytes <= 0) | |
1024 | return -ENOMEM; | |
1025 | req->qtcb->bottom.support.req_buf_length = bytes; | |
1026 | req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; | |
1027 | ||
1028 | bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, | |
1029 | sg_resp, max_sbals); | |
1030 | if (bytes <= 0) | |
1031 | return -ENOMEM; | |
1032 | req->qtcb->bottom.support.resp_buf_length = bytes; | |
1033 | ||
1034 | return 0; | |
1da177e4 LT |
1035 | } |
1036 | ||
1037 | /** | |
c41f8cbd SS |
1038 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) |
1039 | * @ct: pointer to struct zfcp_send_ct with data for request | |
1040 | * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req | |
1041 | * @erp_action: if non-null the Generic Service request sent within ERP | |
1da177e4 | 1042 | */ |
c41f8cbd SS |
1043 | int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, |
1044 | struct zfcp_erp_action *erp_action) | |
1da177e4 | 1045 | { |
5ab944f9 SS |
1046 | struct zfcp_wka_port *wka_port = ct->wka_port; |
1047 | struct zfcp_adapter *adapter = wka_port->adapter; | |
c41f8cbd SS |
1048 | struct zfcp_fsf_req *req; |
1049 | int ret = -EIO; | |
1da177e4 | 1050 | |
0406289e | 1051 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1052 | if (zfcp_fsf_req_sbal_get(adapter)) |
1053 | goto out; | |
1da177e4 | 1054 | |
c41f8cbd SS |
1055 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC, |
1056 | ZFCP_REQ_AUTO_CLEANUP, pool); | |
025270f0 | 1057 | if (IS_ERR(req)) { |
c41f8cbd SS |
1058 | ret = PTR_ERR(req); |
1059 | goto out; | |
3f0ca62a CS |
1060 | } |
1061 | ||
c41f8cbd SS |
1062 | ret = zfcp_fsf_setup_sbals(req, ct->req, ct->resp, |
1063 | FSF_MAX_SBALS_PER_REQ); | |
553448f6 | 1064 | if (ret) |
1da177e4 | 1065 | goto failed_send; |
1da177e4 | 1066 | |
c41f8cbd | 1067 | req->handler = zfcp_fsf_send_ct_handler; |
5ab944f9 | 1068 | req->qtcb->header.port_handle = wka_port->handle; |
c41f8cbd SS |
1069 | req->qtcb->bottom.support.service_class = FSF_CLASS_3; |
1070 | req->qtcb->bottom.support.timeout = ct->timeout; | |
1071 | req->data = ct; | |
1072 | ||
1073 | zfcp_san_dbf_event_ct_request(req); | |
1074 | ||
1075 | if (erp_action) { | |
1076 | erp_action->fsf_req = req; | |
1077 | req->erp_action = erp_action; | |
287ac01a | 1078 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
1079 | } else |
1080 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1da177e4 | 1081 | |
c41f8cbd SS |
1082 | ret = zfcp_fsf_req_send(req); |
1083 | if (ret) | |
1084 | goto failed_send; | |
1da177e4 | 1085 | |
c41f8cbd | 1086 | goto out; |
1da177e4 | 1087 | |
c41f8cbd SS |
1088 | failed_send: |
1089 | zfcp_fsf_req_free(req); | |
1090 | if (erp_action) | |
1091 | erp_action->fsf_req = NULL; | |
1092 | out: | |
0406289e | 1093 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 1094 | return ret; |
1da177e4 LT |
1095 | } |
1096 | ||
c41f8cbd | 1097 | static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1098 | { |
c41f8cbd SS |
1099 | struct zfcp_send_els *send_els = req->data; |
1100 | struct zfcp_port *port = send_els->port; | |
1101 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1102 | |
c41f8cbd | 1103 | send_els->status = -EINVAL; |
1da177e4 | 1104 | |
c41f8cbd | 1105 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
1106 | goto skip_fsfstatus; |
1107 | ||
1108 | switch (header->fsf_status) { | |
1da177e4 | 1109 | case FSF_GOOD: |
c41f8cbd SS |
1110 | zfcp_san_dbf_event_els_response(req); |
1111 | send_els->status = 0; | |
1da177e4 | 1112 | break; |
1da177e4 | 1113 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 1114 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 1115 | break; |
1da177e4 | 1116 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1117 | switch (header->fsf_status_qual.word[0]){ |
1118 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
64b29a13 AH |
1119 | if (port && (send_els->ls_code != ZFCP_LS_ADISC)) |
1120 | zfcp_test_link(port); | |
c41f8cbd | 1121 | /*fall through */ |
1da177e4 | 1122 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1123 | case FSF_SQ_RETRY_IF_POSSIBLE: |
c41f8cbd | 1124 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1125 | break; |
1da177e4 LT |
1126 | } |
1127 | break; | |
1da177e4 | 1128 | case FSF_ELS_COMMAND_REJECTED: |
1da177e4 | 1129 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1130 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1131 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1132 | break; |
1da177e4 | 1133 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1134 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1135 | break; |
c41f8cbd SS |
1136 | case FSF_SBAL_MISMATCH: |
1137 | /* should never occure, avoided in zfcp_fsf_send_els */ | |
1138 | /* fall through */ | |
1da177e4 | 1139 | default: |
c41f8cbd | 1140 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1141 | break; |
1142 | } | |
1da177e4 | 1143 | skip_fsfstatus: |
aa551daf | 1144 | if (send_els->handler) |
1da177e4 | 1145 | send_els->handler(send_els->handler_data); |
c41f8cbd | 1146 | } |
1da177e4 | 1147 | |
c41f8cbd SS |
1148 | /** |
1149 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) | |
1150 | * @els: pointer to struct zfcp_send_els with data for the command | |
1151 | */ | |
1152 | int zfcp_fsf_send_els(struct zfcp_send_els *els) | |
1153 | { | |
1154 | struct zfcp_fsf_req *req; | |
1155 | struct zfcp_adapter *adapter = els->adapter; | |
1156 | struct fsf_qtcb_bottom_support *bottom; | |
1157 | int ret = -EIO; | |
1158 | ||
1159 | if (unlikely(!(atomic_read(&els->port->status) & | |
1160 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
1161 | return -EBUSY; | |
1162 | ||
0406289e | 1163 | spin_lock(&adapter->req_q_lock); |
2450d3e7 | 1164 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd SS |
1165 | goto out; |
1166 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS, | |
1167 | ZFCP_REQ_AUTO_CLEANUP, NULL); | |
025270f0 | 1168 | if (IS_ERR(req)) { |
c41f8cbd SS |
1169 | ret = PTR_ERR(req); |
1170 | goto out; | |
1171 | } | |
1172 | ||
44cc76f2 SS |
1173 | ret = zfcp_fsf_setup_sbals(req, els->req, els->resp, 2); |
1174 | ||
c41f8cbd SS |
1175 | if (ret) |
1176 | goto failed_send; | |
1177 | ||
1178 | bottom = &req->qtcb->bottom.support; | |
1179 | req->handler = zfcp_fsf_send_els_handler; | |
1180 | bottom->d_id = els->d_id; | |
1181 | bottom->service_class = FSF_CLASS_3; | |
1182 | bottom->timeout = 2 * R_A_TOV; | |
1183 | req->data = els; | |
1184 | ||
1185 | zfcp_san_dbf_event_els_request(req); | |
1186 | ||
1187 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1188 | ret = zfcp_fsf_req_send(req); | |
1189 | if (ret) | |
1190 | goto failed_send; | |
1191 | ||
1192 | goto out; | |
1193 | ||
1194 | failed_send: | |
1195 | zfcp_fsf_req_free(req); | |
1196 | out: | |
0406289e | 1197 | spin_unlock(&adapter->req_q_lock); |
c41f8cbd | 1198 | return ret; |
1da177e4 LT |
1199 | } |
1200 | ||
c41f8cbd | 1201 | int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1202 | { |
44cc76f2 | 1203 | struct qdio_buffer_element *sbale; |
c41f8cbd | 1204 | struct zfcp_fsf_req *req; |
52ef11a7 | 1205 | struct zfcp_adapter *adapter = erp_action->adapter; |
c41f8cbd SS |
1206 | int retval = -EIO; |
1207 | ||
0406289e | 1208 | spin_lock_bh(&adapter->req_q_lock); |
2450d3e7 | 1209 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd SS |
1210 | goto out; |
1211 | req = zfcp_fsf_req_create(adapter, | |
1212 | FSF_QTCB_EXCHANGE_CONFIG_DATA, | |
1213 | ZFCP_REQ_AUTO_CLEANUP, | |
1214 | adapter->pool.fsf_req_erp); | |
025270f0 | 1215 | if (IS_ERR(req)) { |
c41f8cbd SS |
1216 | retval = PTR_ERR(req); |
1217 | goto out; | |
1da177e4 LT |
1218 | } |
1219 | ||
c41f8cbd | 1220 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1221 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1222 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1223 | |
c41f8cbd | 1224 | req->qtcb->bottom.config.feature_selection = |
aef4a983 MS |
1225 | FSF_FEATURE_CFDC | |
1226 | FSF_FEATURE_LUN_SHARING | | |
9eb69aff | 1227 | FSF_FEATURE_NOTIFICATION_LOST | |
aef4a983 | 1228 | FSF_FEATURE_UPDATE_ALERT; |
c41f8cbd SS |
1229 | req->erp_action = erp_action; |
1230 | req->handler = zfcp_fsf_exchange_config_data_handler; | |
1231 | erp_action->fsf_req = req; | |
1da177e4 | 1232 | |
287ac01a | 1233 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1234 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1235 | if (retval) { |
c41f8cbd | 1236 | zfcp_fsf_req_free(req); |
1da177e4 | 1237 | erp_action->fsf_req = NULL; |
1da177e4 | 1238 | } |
c41f8cbd | 1239 | out: |
0406289e | 1240 | spin_unlock_bh(&adapter->req_q_lock); |
52ef11a7 SS |
1241 | return retval; |
1242 | } | |
1da177e4 | 1243 | |
c41f8cbd SS |
1244 | int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter, |
1245 | struct fsf_qtcb_bottom_config *data) | |
52ef11a7 | 1246 | { |
44cc76f2 | 1247 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1248 | struct zfcp_fsf_req *req = NULL; |
1249 | int retval = -EIO; | |
1250 | ||
0406289e | 1251 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1252 | if (zfcp_fsf_req_sbal_get(adapter)) |
1253 | goto out; | |
1254 | ||
1255 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA, | |
1256 | 0, NULL); | |
025270f0 | 1257 | if (IS_ERR(req)) { |
c41f8cbd SS |
1258 | retval = PTR_ERR(req); |
1259 | goto out; | |
52ef11a7 SS |
1260 | } |
1261 | ||
c41f8cbd | 1262 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1263 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1264 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
c41f8cbd | 1265 | req->handler = zfcp_fsf_exchange_config_data_handler; |
52ef11a7 | 1266 | |
c41f8cbd | 1267 | req->qtcb->bottom.config.feature_selection = |
52ef11a7 SS |
1268 | FSF_FEATURE_CFDC | |
1269 | FSF_FEATURE_LUN_SHARING | | |
1270 | FSF_FEATURE_NOTIFICATION_LOST | | |
1271 | FSF_FEATURE_UPDATE_ALERT; | |
1272 | ||
1273 | if (data) | |
c41f8cbd | 1274 | req->data = data; |
52ef11a7 | 1275 | |
c41f8cbd SS |
1276 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
1277 | retval = zfcp_fsf_req_send(req); | |
1278 | out: | |
0406289e | 1279 | spin_unlock_bh(&adapter->req_q_lock); |
553448f6 | 1280 | if (!retval) |
c41f8cbd SS |
1281 | wait_event(req->completion_wq, |
1282 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
52ef11a7 | 1283 | |
c41f8cbd | 1284 | zfcp_fsf_req_free(req); |
52ef11a7 | 1285 | |
1da177e4 LT |
1286 | return retval; |
1287 | } | |
1288 | ||
1da177e4 LT |
1289 | /** |
1290 | * zfcp_fsf_exchange_port_data - request information about local port | |
aef4a983 | 1291 | * @erp_action: ERP action for the adapter for which port data is requested |
c41f8cbd | 1292 | * Returns: 0 on success, error otherwise |
1da177e4 | 1293 | */ |
c41f8cbd | 1294 | int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1295 | { |
44cc76f2 | 1296 | struct qdio_buffer_element *sbale; |
c41f8cbd | 1297 | struct zfcp_fsf_req *req; |
52ef11a7 | 1298 | struct zfcp_adapter *adapter = erp_action->adapter; |
c41f8cbd | 1299 | int retval = -EIO; |
1da177e4 | 1300 | |
553448f6 | 1301 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1302 | return -EOPNOTSUPP; |
1da177e4 | 1303 | |
0406289e | 1304 | spin_lock_bh(&adapter->req_q_lock); |
2450d3e7 | 1305 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd SS |
1306 | goto out; |
1307 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, | |
1308 | ZFCP_REQ_AUTO_CLEANUP, | |
1309 | adapter->pool.fsf_req_erp); | |
025270f0 | 1310 | if (IS_ERR(req)) { |
c41f8cbd SS |
1311 | retval = PTR_ERR(req); |
1312 | goto out; | |
aef4a983 MS |
1313 | } |
1314 | ||
c41f8cbd | 1315 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1316 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1317 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1318 | |
c41f8cbd SS |
1319 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1320 | req->erp_action = erp_action; | |
1321 | erp_action->fsf_req = req; | |
52ef11a7 | 1322 | |
287ac01a | 1323 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1324 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1325 | if (retval) { |
c41f8cbd | 1326 | zfcp_fsf_req_free(req); |
52ef11a7 SS |
1327 | erp_action->fsf_req = NULL; |
1328 | } | |
c41f8cbd | 1329 | out: |
0406289e | 1330 | spin_unlock_bh(&adapter->req_q_lock); |
52ef11a7 SS |
1331 | return retval; |
1332 | } | |
1333 | ||
52ef11a7 SS |
1334 | /** |
1335 | * zfcp_fsf_exchange_port_data_sync - request information about local port | |
c41f8cbd SS |
1336 | * @adapter: pointer to struct zfcp_adapter |
1337 | * @data: pointer to struct fsf_qtcb_bottom_port | |
1338 | * Returns: 0 on success, error otherwise | |
52ef11a7 | 1339 | */ |
c41f8cbd SS |
1340 | int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, |
1341 | struct fsf_qtcb_bottom_port *data) | |
52ef11a7 | 1342 | { |
44cc76f2 | 1343 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1344 | struct zfcp_fsf_req *req = NULL; |
1345 | int retval = -EIO; | |
52ef11a7 | 1346 | |
553448f6 | 1347 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1348 | return -EOPNOTSUPP; |
52ef11a7 | 1349 | |
0406289e | 1350 | spin_lock_bh(&adapter->req_q_lock); |
2450d3e7 | 1351 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd SS |
1352 | goto out; |
1353 | ||
1354 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, 0, | |
1355 | NULL); | |
025270f0 | 1356 | if (IS_ERR(req)) { |
c41f8cbd SS |
1357 | retval = PTR_ERR(req); |
1358 | goto out; | |
1da177e4 LT |
1359 | } |
1360 | ||
52ef11a7 | 1361 | if (data) |
c41f8cbd | 1362 | req->data = data; |
52ef11a7 | 1363 | |
c41f8cbd | 1364 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1365 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1366 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1367 | ||
c41f8cbd SS |
1368 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1369 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1370 | retval = zfcp_fsf_req_send(req); | |
1371 | out: | |
0406289e | 1372 | spin_unlock_bh(&adapter->req_q_lock); |
553448f6 | 1373 | if (!retval) |
c41f8cbd SS |
1374 | wait_event(req->completion_wq, |
1375 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
1376 | zfcp_fsf_req_free(req); | |
1da177e4 | 1377 | |
1da177e4 LT |
1378 | return retval; |
1379 | } | |
1380 | ||
c41f8cbd | 1381 | static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1382 | { |
c41f8cbd SS |
1383 | struct zfcp_port *port = req->data; |
1384 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1385 | struct fsf_plogi *plogi; |
1da177e4 | 1386 | |
c41f8cbd | 1387 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1388 | return; |
1da177e4 | 1389 | |
1da177e4 | 1390 | switch (header->fsf_status) { |
1da177e4 | 1391 | case FSF_PORT_ALREADY_OPEN: |
1da177e4 | 1392 | break; |
1da177e4 | 1393 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1394 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1395 | break; |
1da177e4 | 1396 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: |
c41f8cbd | 1397 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 1398 | "Not enough FCP adapter resources to open " |
7ba58c9c SS |
1399 | "remote port 0x%016Lx\n", |
1400 | (unsigned long long)port->wwpn); | |
c41f8cbd SS |
1401 | zfcp_erp_port_failed(port, 31, req); |
1402 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1403 | break; |
1da177e4 | 1404 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1405 | switch (header->fsf_status_qual.word[0]) { |
1406 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1407 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1408 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1409 | break; |
1410 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
c41f8cbd | 1411 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 1412 | "Remote port 0x%016Lx could not be opened\n", |
7ba58c9c | 1413 | (unsigned long long)port->wwpn); |
c41f8cbd SS |
1414 | zfcp_erp_port_failed(port, 32, req); |
1415 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
1416 | break; |
1417 | } | |
1418 | break; | |
1da177e4 | 1419 | case FSF_GOOD: |
1da177e4 | 1420 | port->handle = header->port_handle; |
1da177e4 LT |
1421 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN | |
1422 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
d736a27b AH |
1423 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
1424 | ZFCP_STATUS_COMMON_ACCESS_BOXED, | |
1425 | &port->status); | |
1da177e4 LT |
1426 | /* check whether D_ID has changed during open */ |
1427 | /* | |
1428 | * FIXME: This check is not airtight, as the FCP channel does | |
1429 | * not monitor closures of target port connections caused on | |
1430 | * the remote side. Thus, they might miss out on invalidating | |
1431 | * locally cached WWPNs (and other N_Port parameters) of gone | |
1432 | * target ports. So, our heroic attempt to make things safe | |
1433 | * could be undermined by 'open port' response data tagged with | |
1434 | * obsolete WWPNs. Another reason to monitor potential | |
1435 | * connection closures ourself at least (by interpreting | |
1436 | * incoming ELS' and unsolicited status). It just crosses my | |
1437 | * mind that one should be able to cross-check by means of | |
1438 | * another GID_PN straight after a port has been opened. | |
1439 | * Alternately, an ADISC/PDISC ELS should suffice, as well. | |
1440 | */ | |
c41f8cbd SS |
1441 | plogi = (struct fsf_plogi *) req->qtcb->bottom.support.els; |
1442 | if (req->qtcb->bottom.support.els1_length >= sizeof(*plogi)) { | |
1443 | if (plogi->serv_param.wwpn != port->wwpn) | |
1444 | atomic_clear_mask(ZFCP_STATUS_PORT_DID_DID, | |
1445 | &port->status); | |
1446 | else { | |
1447 | port->wwnn = plogi->serv_param.wwnn; | |
1448 | zfcp_fc_plogi_evaluate(port, plogi); | |
1da177e4 LT |
1449 | } |
1450 | } | |
1451 | break; | |
1da177e4 | 1452 | case FSF_UNKNOWN_OP_SUBTYPE: |
c41f8cbd | 1453 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1454 | break; |
1455 | } | |
1da177e4 LT |
1456 | } |
1457 | ||
c41f8cbd SS |
1458 | /** |
1459 | * zfcp_fsf_open_port - create and send open port request | |
1460 | * @erp_action: pointer to struct zfcp_erp_action | |
1461 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1462 | */ |
c41f8cbd | 1463 | int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1464 | { |
44cc76f2 | 1465 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1466 | struct zfcp_adapter *adapter = erp_action->adapter; |
1467 | struct zfcp_fsf_req *req; | |
1468 | int retval = -EIO; | |
1469 | ||
0406289e | 1470 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1471 | if (zfcp_fsf_req_sbal_get(adapter)) |
1472 | goto out; | |
1473 | ||
1474 | req = zfcp_fsf_req_create(adapter, | |
1475 | FSF_QTCB_OPEN_PORT_WITH_DID, | |
1476 | ZFCP_REQ_AUTO_CLEANUP, | |
1477 | adapter->pool.fsf_req_erp); | |
025270f0 | 1478 | if (IS_ERR(req)) { |
c41f8cbd | 1479 | retval = PTR_ERR(req); |
1da177e4 | 1480 | goto out; |
c41f8cbd | 1481 | } |
1da177e4 | 1482 | |
c41f8cbd | 1483 | sbale = zfcp_qdio_sbale_req(req); |
1da177e4 LT |
1484 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1485 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1486 | ||
c41f8cbd SS |
1487 | req->handler = zfcp_fsf_open_port_handler; |
1488 | req->qtcb->bottom.support.d_id = erp_action->port->d_id; | |
1489 | req->data = erp_action->port; | |
1490 | req->erp_action = erp_action; | |
1491 | erp_action->fsf_req = req; | |
c41f8cbd | 1492 | |
287ac01a | 1493 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1494 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1495 | if (retval) { |
c41f8cbd | 1496 | zfcp_fsf_req_free(req); |
1da177e4 | 1497 | erp_action->fsf_req = NULL; |
1da177e4 | 1498 | } |
c41f8cbd | 1499 | out: |
0406289e | 1500 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1501 | return retval; |
1502 | } | |
1503 | ||
c41f8cbd | 1504 | static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1505 | { |
c41f8cbd | 1506 | struct zfcp_port *port = req->data; |
1da177e4 | 1507 | |
c41f8cbd | 1508 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1509 | return; |
1da177e4 | 1510 | |
c41f8cbd | 1511 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1512 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd SS |
1513 | zfcp_erp_adapter_reopen(port->adapter, 0, 107, req); |
1514 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1515 | break; |
1da177e4 | 1516 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 | 1517 | break; |
1da177e4 | 1518 | case FSF_GOOD: |
c41f8cbd | 1519 | zfcp_erp_modify_port_status(port, 33, req, |
1da177e4 LT |
1520 | ZFCP_STATUS_COMMON_OPEN, |
1521 | ZFCP_CLEAR); | |
1da177e4 | 1522 | break; |
1da177e4 | 1523 | } |
1da177e4 LT |
1524 | } |
1525 | ||
c41f8cbd SS |
1526 | /** |
1527 | * zfcp_fsf_close_port - create and send close port request | |
1528 | * @erp_action: pointer to struct zfcp_erp_action | |
1529 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1530 | */ |
c41f8cbd | 1531 | int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1532 | { |
44cc76f2 | 1533 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1534 | struct zfcp_adapter *adapter = erp_action->adapter; |
1535 | struct zfcp_fsf_req *req; | |
1536 | int retval = -EIO; | |
1537 | ||
0406289e | 1538 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1539 | if (zfcp_fsf_req_sbal_get(adapter)) |
1540 | goto out; | |
1541 | ||
1542 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT, | |
1543 | ZFCP_REQ_AUTO_CLEANUP, | |
1544 | adapter->pool.fsf_req_erp); | |
025270f0 | 1545 | if (IS_ERR(req)) { |
c41f8cbd | 1546 | retval = PTR_ERR(req); |
1da177e4 | 1547 | goto out; |
c41f8cbd | 1548 | } |
1da177e4 | 1549 | |
c41f8cbd | 1550 | sbale = zfcp_qdio_sbale_req(req); |
1da177e4 LT |
1551 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1552 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1553 | ||
c41f8cbd SS |
1554 | req->handler = zfcp_fsf_close_port_handler; |
1555 | req->data = erp_action->port; | |
1556 | req->erp_action = erp_action; | |
1557 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1558 | erp_action->fsf_req = req; | |
c41f8cbd | 1559 | |
287ac01a | 1560 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1561 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1562 | if (retval) { |
c41f8cbd | 1563 | zfcp_fsf_req_free(req); |
1da177e4 | 1564 | erp_action->fsf_req = NULL; |
1da177e4 | 1565 | } |
c41f8cbd | 1566 | out: |
0406289e | 1567 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1568 | return retval; |
1569 | } | |
1570 | ||
5ab944f9 SS |
1571 | static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req) |
1572 | { | |
1573 | struct zfcp_wka_port *wka_port = req->data; | |
1574 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1575 | ||
1576 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
1577 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1578 | goto out; | |
1579 | } | |
1580 | ||
1581 | switch (header->fsf_status) { | |
1582 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: | |
1583 | dev_warn(&req->adapter->ccw_device->dev, | |
1584 | "Opening WKA port 0x%x failed\n", wka_port->d_id); | |
1585 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1586 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1587 | case FSF_ACCESS_DENIED: | |
1588 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1589 | break; | |
1590 | case FSF_PORT_ALREADY_OPEN: | |
1591 | case FSF_GOOD: | |
1592 | wka_port->handle = header->port_handle; | |
1593 | wka_port->status = ZFCP_WKA_PORT_ONLINE; | |
1594 | } | |
1595 | out: | |
1596 | wake_up(&wka_port->completion_wq); | |
1597 | } | |
1598 | ||
1599 | /** | |
1600 | * zfcp_fsf_open_wka_port - create and send open wka-port request | |
1601 | * @wka_port: pointer to struct zfcp_wka_port | |
1602 | * Returns: 0 on success, error otherwise | |
1603 | */ | |
1604 | int zfcp_fsf_open_wka_port(struct zfcp_wka_port *wka_port) | |
1605 | { | |
1606 | struct qdio_buffer_element *sbale; | |
1607 | struct zfcp_adapter *adapter = wka_port->adapter; | |
1608 | struct zfcp_fsf_req *req; | |
1609 | int retval = -EIO; | |
1610 | ||
0406289e | 1611 | spin_lock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1612 | if (zfcp_fsf_req_sbal_get(adapter)) |
1613 | goto out; | |
1614 | ||
1615 | req = zfcp_fsf_req_create(adapter, | |
1616 | FSF_QTCB_OPEN_PORT_WITH_DID, | |
1617 | ZFCP_REQ_AUTO_CLEANUP, | |
1618 | adapter->pool.fsf_req_erp); | |
1619 | if (unlikely(IS_ERR(req))) { | |
1620 | retval = PTR_ERR(req); | |
1621 | goto out; | |
1622 | } | |
1623 | ||
1624 | sbale = zfcp_qdio_sbale_req(req); | |
1625 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1626 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1627 | ||
1628 | req->handler = zfcp_fsf_open_wka_port_handler; | |
1629 | req->qtcb->bottom.support.d_id = wka_port->d_id; | |
1630 | req->data = wka_port; | |
1631 | ||
1632 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1633 | retval = zfcp_fsf_req_send(req); | |
1634 | if (retval) | |
1635 | zfcp_fsf_req_free(req); | |
1636 | out: | |
0406289e | 1637 | spin_unlock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1638 | return retval; |
1639 | } | |
1640 | ||
1641 | static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req) | |
1642 | { | |
1643 | struct zfcp_wka_port *wka_port = req->data; | |
1644 | ||
1645 | if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) { | |
1646 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
41bfcf90 | 1647 | zfcp_erp_adapter_reopen(wka_port->adapter, 0, 84, req); |
5ab944f9 SS |
1648 | } |
1649 | ||
1650 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1651 | wake_up(&wka_port->completion_wq); | |
1652 | } | |
1653 | ||
1654 | /** | |
1655 | * zfcp_fsf_close_wka_port - create and send close wka port request | |
1656 | * @erp_action: pointer to struct zfcp_erp_action | |
1657 | * Returns: 0 on success, error otherwise | |
1658 | */ | |
1659 | int zfcp_fsf_close_wka_port(struct zfcp_wka_port *wka_port) | |
1660 | { | |
1661 | struct qdio_buffer_element *sbale; | |
1662 | struct zfcp_adapter *adapter = wka_port->adapter; | |
1663 | struct zfcp_fsf_req *req; | |
1664 | int retval = -EIO; | |
1665 | ||
0406289e | 1666 | spin_lock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1667 | if (zfcp_fsf_req_sbal_get(adapter)) |
1668 | goto out; | |
1669 | ||
1670 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT, | |
1671 | ZFCP_REQ_AUTO_CLEANUP, | |
1672 | adapter->pool.fsf_req_erp); | |
1673 | if (unlikely(IS_ERR(req))) { | |
1674 | retval = PTR_ERR(req); | |
1675 | goto out; | |
1676 | } | |
1677 | ||
1678 | sbale = zfcp_qdio_sbale_req(req); | |
1679 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1680 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1681 | ||
1682 | req->handler = zfcp_fsf_close_wka_port_handler; | |
1683 | req->data = wka_port; | |
1684 | req->qtcb->header.port_handle = wka_port->handle; | |
1685 | ||
1686 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1687 | retval = zfcp_fsf_req_send(req); | |
1688 | if (retval) | |
1689 | zfcp_fsf_req_free(req); | |
1690 | out: | |
0406289e | 1691 | spin_unlock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1692 | return retval; |
1693 | } | |
1694 | ||
c41f8cbd | 1695 | static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1696 | { |
c41f8cbd SS |
1697 | struct zfcp_port *port = req->data; |
1698 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1699 | struct zfcp_unit *unit; |
1da177e4 | 1700 | |
c41f8cbd | 1701 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 | 1702 | goto skip_fsfstatus; |
1da177e4 | 1703 | |
1da177e4 | 1704 | switch (header->fsf_status) { |
1da177e4 | 1705 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd SS |
1706 | zfcp_erp_adapter_reopen(port->adapter, 0, 108, req); |
1707 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1708 | break; |
1da177e4 | 1709 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1710 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1711 | break; |
1da177e4 | 1712 | case FSF_PORT_BOXED: |
c41f8cbd SS |
1713 | zfcp_erp_port_boxed(port, 50, req); |
1714 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
1715 | ZFCP_STATUS_FSFREQ_RETRY; | |
5c815d15 CS |
1716 | /* can't use generic zfcp_erp_modify_port_status because |
1717 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */ | |
1718 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
1719 | list_for_each_entry(unit, &port->unit_list_head, list) | |
1720 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, | |
1721 | &unit->status); | |
1da177e4 | 1722 | break; |
1da177e4 | 1723 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1724 | switch (header->fsf_status_qual.word[0]) { |
1725 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
c41f8cbd | 1726 | /* fall through */ |
1da177e4 | 1727 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1728 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1729 | break; |
1da177e4 LT |
1730 | } |
1731 | break; | |
1da177e4 | 1732 | case FSF_GOOD: |
1da177e4 LT |
1733 | /* can't use generic zfcp_erp_modify_port_status because |
1734 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port | |
1735 | */ | |
1736 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
1737 | list_for_each_entry(unit, &port->unit_list_head, list) | |
c41f8cbd SS |
1738 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, |
1739 | &unit->status); | |
1da177e4 | 1740 | break; |
1da177e4 | 1741 | } |
c41f8cbd | 1742 | skip_fsfstatus: |
1da177e4 | 1743 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, &port->status); |
1da177e4 LT |
1744 | } |
1745 | ||
c41f8cbd SS |
1746 | /** |
1747 | * zfcp_fsf_close_physical_port - close physical port | |
1748 | * @erp_action: pointer to struct zfcp_erp_action | |
1749 | * Returns: 0 on success | |
1da177e4 | 1750 | */ |
c41f8cbd | 1751 | int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1752 | { |
44cc76f2 | 1753 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1754 | struct zfcp_adapter *adapter = erp_action->adapter; |
1755 | struct zfcp_fsf_req *req; | |
1756 | int retval = -EIO; | |
1757 | ||
0406289e | 1758 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 1759 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 1760 | goto out; |
1da177e4 | 1761 | |
c41f8cbd SS |
1762 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PHYSICAL_PORT, |
1763 | ZFCP_REQ_AUTO_CLEANUP, | |
1764 | adapter->pool.fsf_req_erp); | |
025270f0 | 1765 | if (IS_ERR(req)) { |
c41f8cbd SS |
1766 | retval = PTR_ERR(req); |
1767 | goto out; | |
1768 | } | |
1da177e4 | 1769 | |
c41f8cbd SS |
1770 | sbale = zfcp_qdio_sbale_req(req); |
1771 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1772 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1773 | |
c41f8cbd SS |
1774 | req->data = erp_action->port; |
1775 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1776 | req->erp_action = erp_action; | |
1777 | req->handler = zfcp_fsf_close_physical_port_handler; | |
1778 | erp_action->fsf_req = req; | |
1779 | atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, | |
1780 | &erp_action->port->status); | |
1781 | ||
287ac01a | 1782 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1783 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1784 | if (retval) { |
c41f8cbd | 1785 | zfcp_fsf_req_free(req); |
1da177e4 | 1786 | erp_action->fsf_req = NULL; |
1da177e4 | 1787 | } |
c41f8cbd | 1788 | out: |
0406289e | 1789 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1790 | return retval; |
1791 | } | |
1792 | ||
c41f8cbd | 1793 | static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1794 | { |
c41f8cbd SS |
1795 | struct zfcp_adapter *adapter = req->adapter; |
1796 | struct zfcp_unit *unit = req->data; | |
1797 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1798 | struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support; | |
1799 | struct fsf_queue_designator *queue_designator = | |
1800 | &header->fsf_status_qual.fsf_queue_designator; | |
aef4a983 | 1801 | int exclusive, readwrite; |
1da177e4 | 1802 | |
c41f8cbd | 1803 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1804 | return; |
1da177e4 | 1805 | |
1da177e4 | 1806 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
b64ddf96 | 1807 | ZFCP_STATUS_COMMON_ACCESS_BOXED | |
1da177e4 LT |
1808 | ZFCP_STATUS_UNIT_SHARED | |
1809 | ZFCP_STATUS_UNIT_READONLY, | |
1810 | &unit->status); | |
1811 | ||
1da177e4 LT |
1812 | switch (header->fsf_status) { |
1813 | ||
1814 | case FSF_PORT_HANDLE_NOT_VALID: | |
c41f8cbd SS |
1815 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 109, req); |
1816 | /* fall through */ | |
1da177e4 | 1817 | case FSF_LUN_ALREADY_OPEN: |
1da177e4 | 1818 | break; |
1da177e4 | 1819 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1820 | zfcp_fsf_access_denied_unit(req, unit); |
1da177e4 | 1821 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
553448f6 | 1822 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); |
1da177e4 | 1823 | break; |
1da177e4 | 1824 | case FSF_PORT_BOXED: |
c41f8cbd SS |
1825 | zfcp_erp_port_boxed(unit->port, 51, req); |
1826 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
1827 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 1828 | break; |
1da177e4 | 1829 | case FSF_LUN_SHARING_VIOLATION: |
c41f8cbd | 1830 | if (header->fsf_status_qual.word[0]) |
553448f6 | 1831 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1832 | "LUN 0x%Lx on port 0x%Lx is already in " |
1833 | "use by CSS%d, MIF Image ID %x\n", | |
7ba58c9c SS |
1834 | (unsigned long long)unit->fcp_lun, |
1835 | (unsigned long long)unit->port->wwpn, | |
ff3b24fa CS |
1836 | queue_designator->cssid, |
1837 | queue_designator->hla); | |
c41f8cbd | 1838 | else |
553448f6 CS |
1839 | zfcp_act_eval_err(adapter, |
1840 | header->fsf_status_qual.word[2]); | |
c41f8cbd | 1841 | zfcp_erp_unit_access_denied(unit, 60, req); |
1da177e4 LT |
1842 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
1843 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); | |
c41f8cbd | 1844 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1845 | break; |
1da177e4 | 1846 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: |
c41f8cbd | 1847 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1848 | "No handle is available for LUN " |
1849 | "0x%016Lx on port 0x%016Lx\n", | |
7ba58c9c SS |
1850 | (unsigned long long)unit->fcp_lun, |
1851 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
1852 | zfcp_erp_unit_failed(unit, 34, req); |
1853 | /* fall through */ | |
1854 | case FSF_INVALID_COMMAND_OPTION: | |
1855 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1856 | break; |
1da177e4 | 1857 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1858 | switch (header->fsf_status_qual.word[0]) { |
1859 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
65a8d4e1 | 1860 | zfcp_test_link(unit->port); |
c41f8cbd | 1861 | /* fall through */ |
1da177e4 | 1862 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1863 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1864 | break; |
1da177e4 LT |
1865 | } |
1866 | break; | |
1867 | ||
1da177e4 | 1868 | case FSF_GOOD: |
1da177e4 | 1869 | unit->handle = header->lun_handle; |
1da177e4 | 1870 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
aef4a983 MS |
1871 | |
1872 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) && | |
1873 | (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) && | |
1874 | (adapter->ccw_device->id.dev_model != ZFCP_DEVICE_MODEL_PRIV)) { | |
1875 | exclusive = (bottom->lun_access_info & | |
1876 | FSF_UNIT_ACCESS_EXCLUSIVE); | |
1877 | readwrite = (bottom->lun_access_info & | |
1878 | FSF_UNIT_ACCESS_OUTBOUND_TRANSFER); | |
1879 | ||
1da177e4 LT |
1880 | if (!exclusive) |
1881 | atomic_set_mask(ZFCP_STATUS_UNIT_SHARED, | |
1882 | &unit->status); | |
1883 | ||
1884 | if (!readwrite) { | |
1885 | atomic_set_mask(ZFCP_STATUS_UNIT_READONLY, | |
1886 | &unit->status); | |
c41f8cbd | 1887 | dev_info(&adapter->ccw_device->dev, |
ff3b24fa CS |
1888 | "SCSI device at LUN 0x%016Lx on port " |
1889 | "0x%016Lx opened read-only\n", | |
7ba58c9c SS |
1890 | (unsigned long long)unit->fcp_lun, |
1891 | (unsigned long long)unit->port->wwpn); | |
1da177e4 LT |
1892 | } |
1893 | ||
1894 | if (exclusive && !readwrite) { | |
c41f8cbd | 1895 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
1896 | "Exclusive read-only access not " |
1897 | "supported (unit 0x%016Lx, " | |
1898 | "port 0x%016Lx)\n", | |
7ba58c9c SS |
1899 | (unsigned long long)unit->fcp_lun, |
1900 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
1901 | zfcp_erp_unit_failed(unit, 35, req); |
1902 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1903 | zfcp_erp_unit_shutdown(unit, 0, 80, req); | |
1da177e4 | 1904 | } else if (!exclusive && readwrite) { |
c41f8cbd | 1905 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
1906 | "Shared read-write access not " |
1907 | "supported (unit 0x%016Lx, port " | |
1908 | "0x%016Lx\n)", | |
7ba58c9c SS |
1909 | (unsigned long long)unit->fcp_lun, |
1910 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
1911 | zfcp_erp_unit_failed(unit, 36, req); |
1912 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1913 | zfcp_erp_unit_shutdown(unit, 0, 81, req); | |
1da177e4 LT |
1914 | } |
1915 | } | |
1da177e4 | 1916 | break; |
1da177e4 | 1917 | } |
1da177e4 LT |
1918 | } |
1919 | ||
c41f8cbd SS |
1920 | /** |
1921 | * zfcp_fsf_open_unit - open unit | |
1922 | * @erp_action: pointer to struct zfcp_erp_action | |
1923 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1924 | */ |
c41f8cbd | 1925 | int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) |
1da177e4 | 1926 | { |
44cc76f2 | 1927 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1928 | struct zfcp_adapter *adapter = erp_action->adapter; |
1929 | struct zfcp_fsf_req *req; | |
1930 | int retval = -EIO; | |
1931 | ||
0406289e | 1932 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 1933 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 1934 | goto out; |
1da177e4 | 1935 | |
c41f8cbd SS |
1936 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_OPEN_LUN, |
1937 | ZFCP_REQ_AUTO_CLEANUP, | |
1938 | adapter->pool.fsf_req_erp); | |
025270f0 | 1939 | if (IS_ERR(req)) { |
c41f8cbd SS |
1940 | retval = PTR_ERR(req); |
1941 | goto out; | |
1942 | } | |
1943 | ||
1944 | sbale = zfcp_qdio_sbale_req(req); | |
1da177e4 LT |
1945 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1946 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1947 | ||
c41f8cbd SS |
1948 | req->qtcb->header.port_handle = erp_action->port->handle; |
1949 | req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun; | |
1950 | req->handler = zfcp_fsf_open_unit_handler; | |
1951 | req->data = erp_action->unit; | |
1952 | req->erp_action = erp_action; | |
1953 | erp_action->fsf_req = req; | |
1954 | ||
1955 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) | |
1956 | req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING; | |
1957 | ||
287ac01a | 1958 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1959 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1960 | if (retval) { |
c41f8cbd | 1961 | zfcp_fsf_req_free(req); |
1da177e4 | 1962 | erp_action->fsf_req = NULL; |
1da177e4 | 1963 | } |
c41f8cbd | 1964 | out: |
0406289e | 1965 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1966 | return retval; |
1967 | } | |
1968 | ||
c41f8cbd | 1969 | static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1970 | { |
c41f8cbd | 1971 | struct zfcp_unit *unit = req->data; |
1da177e4 | 1972 | |
c41f8cbd | 1973 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1974 | return; |
1da177e4 | 1975 | |
c41f8cbd | 1976 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1977 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd SS |
1978 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 110, req); |
1979 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1980 | break; |
1da177e4 | 1981 | case FSF_LUN_HANDLE_NOT_VALID: |
c41f8cbd SS |
1982 | zfcp_erp_port_reopen(unit->port, 0, 111, req); |
1983 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1984 | break; |
1da177e4 | 1985 | case FSF_PORT_BOXED: |
c41f8cbd SS |
1986 | zfcp_erp_port_boxed(unit->port, 52, req); |
1987 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
1988 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 1989 | break; |
1da177e4 | 1990 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 1991 | switch (req->qtcb->header.fsf_status_qual.word[0]) { |
1da177e4 | 1992 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
65a8d4e1 | 1993 | zfcp_test_link(unit->port); |
c41f8cbd | 1994 | /* fall through */ |
1da177e4 | 1995 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1996 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1997 | break; |
1998 | } | |
1999 | break; | |
1da177e4 | 2000 | case FSF_GOOD: |
1da177e4 | 2001 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
1da177e4 | 2002 | break; |
1da177e4 | 2003 | } |
1da177e4 LT |
2004 | } |
2005 | ||
2006 | /** | |
c41f8cbd SS |
2007 | * zfcp_fsf_close_unit - close zfcp unit |
2008 | * @erp_action: pointer to struct zfcp_unit | |
2009 | * Returns: 0 on success, error otherwise | |
1da177e4 | 2010 | */ |
c41f8cbd | 2011 | int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) |
1da177e4 | 2012 | { |
44cc76f2 | 2013 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2014 | struct zfcp_adapter *adapter = erp_action->adapter; |
2015 | struct zfcp_fsf_req *req; | |
2016 | int retval = -EIO; | |
1da177e4 | 2017 | |
0406289e | 2018 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 2019 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 2020 | goto out; |
c41f8cbd SS |
2021 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_LUN, |
2022 | ZFCP_REQ_AUTO_CLEANUP, | |
2023 | adapter->pool.fsf_req_erp); | |
025270f0 | 2024 | if (IS_ERR(req)) { |
c41f8cbd SS |
2025 | retval = PTR_ERR(req); |
2026 | goto out; | |
2027 | } | |
1da177e4 | 2028 | |
c41f8cbd SS |
2029 | sbale = zfcp_qdio_sbale_req(req); |
2030 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1da177e4 LT |
2031 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; |
2032 | ||
c41f8cbd SS |
2033 | req->qtcb->header.port_handle = erp_action->port->handle; |
2034 | req->qtcb->header.lun_handle = erp_action->unit->handle; | |
2035 | req->handler = zfcp_fsf_close_unit_handler; | |
2036 | req->data = erp_action->unit; | |
2037 | req->erp_action = erp_action; | |
2038 | erp_action->fsf_req = req; | |
fdf23452 | 2039 | |
287ac01a | 2040 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
2041 | retval = zfcp_fsf_req_send(req); |
2042 | if (retval) { | |
2043 | zfcp_fsf_req_free(req); | |
2044 | erp_action->fsf_req = NULL; | |
2045 | } | |
2046 | out: | |
0406289e | 2047 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 2048 | return retval; |
1da177e4 LT |
2049 | } |
2050 | ||
c9615858 CS |
2051 | static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat) |
2052 | { | |
2053 | lat_rec->sum += lat; | |
c41f8cbd SS |
2054 | lat_rec->min = min(lat_rec->min, lat); |
2055 | lat_rec->max = max(lat_rec->max, lat); | |
c9615858 CS |
2056 | } |
2057 | ||
c41f8cbd | 2058 | static void zfcp_fsf_req_latency(struct zfcp_fsf_req *req) |
c9615858 CS |
2059 | { |
2060 | struct fsf_qual_latency_info *lat_inf; | |
2061 | struct latency_cont *lat; | |
c41f8cbd | 2062 | struct zfcp_unit *unit = req->unit; |
c9615858 CS |
2063 | unsigned long flags; |
2064 | ||
c41f8cbd | 2065 | lat_inf = &req->qtcb->prefix.prot_status_qual.latency_info; |
c9615858 | 2066 | |
c41f8cbd | 2067 | switch (req->qtcb->bottom.io.data_direction) { |
c9615858 CS |
2068 | case FSF_DATADIR_READ: |
2069 | lat = &unit->latencies.read; | |
2070 | break; | |
2071 | case FSF_DATADIR_WRITE: | |
2072 | lat = &unit->latencies.write; | |
2073 | break; | |
2074 | case FSF_DATADIR_CMND: | |
2075 | lat = &unit->latencies.cmd; | |
2076 | break; | |
2077 | default: | |
2078 | return; | |
2079 | } | |
2080 | ||
2081 | spin_lock_irqsave(&unit->latencies.lock, flags); | |
2082 | zfcp_fsf_update_lat(&lat->channel, lat_inf->channel_lat); | |
2083 | zfcp_fsf_update_lat(&lat->fabric, lat_inf->fabric_lat); | |
2084 | lat->counter++; | |
c41f8cbd | 2085 | spin_unlock_irqrestore(&unit->latencies.lock, flags); |
1da177e4 LT |
2086 | } |
2087 | ||
0997f1c5 SR |
2088 | #ifdef CONFIG_BLK_DEV_IO_TRACE |
2089 | static void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req) | |
2090 | { | |
2091 | struct fsf_qual_latency_info *lat_inf; | |
2092 | struct scsi_cmnd *scsi_cmnd = (struct scsi_cmnd *)fsf_req->data; | |
2093 | struct request *req = scsi_cmnd->request; | |
2094 | struct zfcp_blk_drv_data trace; | |
2095 | int ticks = fsf_req->adapter->timer_ticks; | |
2096 | ||
2097 | trace.flags = 0; | |
2098 | trace.magic = ZFCP_BLK_DRV_DATA_MAGIC; | |
2099 | if (fsf_req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) { | |
2100 | trace.flags |= ZFCP_BLK_LAT_VALID; | |
2101 | lat_inf = &fsf_req->qtcb->prefix.prot_status_qual.latency_info; | |
2102 | trace.channel_lat = lat_inf->channel_lat * ticks; | |
2103 | trace.fabric_lat = lat_inf->fabric_lat * ticks; | |
2104 | } | |
2105 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
2106 | trace.flags |= ZFCP_BLK_REQ_ERROR; | |
2107 | trace.inb_usage = fsf_req->qdio_inb_usage; | |
2108 | trace.outb_usage = fsf_req->qdio_outb_usage; | |
2109 | ||
2110 | blk_add_driver_data(req->q, req, &trace, sizeof(trace)); | |
2111 | } | |
2112 | #else | |
2113 | static inline void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req) | |
2114 | { | |
2115 | } | |
2116 | #endif | |
2117 | ||
c41f8cbd | 2118 | static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2119 | { |
c41f8cbd | 2120 | struct scsi_cmnd *scpnt = req->data; |
1da177e4 | 2121 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) |
c41f8cbd | 2122 | &(req->qtcb->bottom.io.fcp_rsp); |
1da177e4 | 2123 | u32 sns_len; |
f76af7d7 | 2124 | char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; |
1da177e4 | 2125 | unsigned long flags; |
1da177e4 | 2126 | |
553448f6 | 2127 | if (unlikely(!scpnt)) |
c41f8cbd | 2128 | return; |
553448f6 | 2129 | |
c41f8cbd SS |
2130 | read_lock_irqsave(&req->adapter->abort_lock, flags); |
2131 | ||
2132 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ABORTED)) { | |
feac6a07 MP |
2133 | set_host_byte(scpnt, DID_SOFT_ERROR); |
2134 | set_driver_byte(scpnt, SUGGEST_RETRY); | |
1da177e4 LT |
2135 | goto skip_fsfstatus; |
2136 | } | |
2137 | ||
c41f8cbd | 2138 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { |
feac6a07 | 2139 | set_host_byte(scpnt, DID_ERROR); |
1da177e4 LT |
2140 | goto skip_fsfstatus; |
2141 | } | |
2142 | ||
feac6a07 | 2143 | set_msg_byte(scpnt, COMMAND_COMPLETE); |
1da177e4 | 2144 | |
1da177e4 | 2145 | scpnt->result |= fcp_rsp_iu->scsi_status; |
1da177e4 | 2146 | |
c41f8cbd SS |
2147 | if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) |
2148 | zfcp_fsf_req_latency(req); | |
c9615858 | 2149 | |
0997f1c5 SR |
2150 | zfcp_fsf_trace_latency(req); |
2151 | ||
1da177e4 | 2152 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) { |
c41f8cbd | 2153 | if (fcp_rsp_info[3] == RSP_CODE_GOOD) |
feac6a07 | 2154 | set_host_byte(scpnt, DID_OK); |
c41f8cbd | 2155 | else { |
feac6a07 | 2156 | set_host_byte(scpnt, DID_ERROR); |
6f71d9bc | 2157 | goto skip_fsfstatus; |
1da177e4 LT |
2158 | } |
2159 | } | |
2160 | ||
1da177e4 | 2161 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_sns_len_valid)) { |
c41f8cbd SS |
2162 | sns_len = FSF_FCP_RSP_SIZE - sizeof(struct fcp_rsp_iu) + |
2163 | fcp_rsp_iu->fcp_rsp_len; | |
1da177e4 | 2164 | sns_len = min(sns_len, (u32) SCSI_SENSE_BUFFERSIZE); |
1da177e4 | 2165 | sns_len = min(sns_len, fcp_rsp_iu->fcp_sns_len); |
1da177e4 | 2166 | |
9d058ecf | 2167 | memcpy(scpnt->sense_buffer, |
1da177e4 | 2168 | zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len); |
1da177e4 LT |
2169 | } |
2170 | ||
1da177e4 | 2171 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_under)) { |
7936a892 FT |
2172 | scsi_set_resid(scpnt, fcp_rsp_iu->fcp_resid); |
2173 | if (scsi_bufflen(scpnt) - scsi_get_resid(scpnt) < | |
2174 | scpnt->underflow) | |
feac6a07 | 2175 | set_host_byte(scpnt, DID_ERROR); |
1da177e4 | 2176 | } |
c41f8cbd | 2177 | skip_fsfstatus: |
8a36e453 | 2178 | if (scpnt->result != 0) |
c41f8cbd | 2179 | zfcp_scsi_dbf_event_result("erro", 3, req->adapter, scpnt, req); |
8a36e453 | 2180 | else if (scpnt->retries > 0) |
c41f8cbd | 2181 | zfcp_scsi_dbf_event_result("retr", 4, req->adapter, scpnt, req); |
8a36e453 | 2182 | else |
c41f8cbd | 2183 | zfcp_scsi_dbf_event_result("norm", 6, req->adapter, scpnt, req); |
1da177e4 | 2184 | |
1da177e4 | 2185 | scpnt->host_scribble = NULL; |
1da177e4 | 2186 | (scpnt->scsi_done) (scpnt); |
1da177e4 LT |
2187 | /* |
2188 | * We must hold this lock until scsi_done has been called. | |
2189 | * Otherwise we may call scsi_done after abort regarding this | |
2190 | * command has completed. | |
2191 | * Note: scsi_done must not block! | |
2192 | */ | |
c41f8cbd | 2193 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); |
1da177e4 LT |
2194 | } |
2195 | ||
c41f8cbd | 2196 | static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2197 | { |
1da177e4 | 2198 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) |
c41f8cbd | 2199 | &(req->qtcb->bottom.io.fcp_rsp); |
f76af7d7 | 2200 | char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; |
1da177e4 | 2201 | |
c41f8cbd SS |
2202 | if ((fcp_rsp_info[3] != RSP_CODE_GOOD) || |
2203 | (req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
2204 | req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
2205 | } | |
2206 | ||
2207 | ||
2208 | static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req) | |
2209 | { | |
2210 | struct zfcp_unit *unit; | |
2211 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
2212 | ||
2213 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)) | |
2214 | unit = req->data; | |
2215 | else | |
2216 | unit = req->unit; | |
2217 | ||
2218 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
1da177e4 | 2219 | goto skip_fsfstatus; |
1da177e4 | 2220 | |
c41f8cbd SS |
2221 | switch (header->fsf_status) { |
2222 | case FSF_HANDLE_MISMATCH: | |
2223 | case FSF_PORT_HANDLE_NOT_VALID: | |
2224 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 112, req); | |
2225 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2226 | break; | |
2227 | case FSF_FCPLUN_NOT_VALID: | |
2228 | case FSF_LUN_HANDLE_NOT_VALID: | |
2229 | zfcp_erp_port_reopen(unit->port, 0, 113, req); | |
2230 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 2231 | break; |
c41f8cbd SS |
2232 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
2233 | zfcp_fsf_class_not_supp(req); | |
1da177e4 | 2234 | break; |
c41f8cbd SS |
2235 | case FSF_ACCESS_DENIED: |
2236 | zfcp_fsf_access_denied_unit(req, unit); | |
2237 | break; | |
2238 | case FSF_DIRECTION_INDICATOR_NOT_VALID: | |
2239 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
2240 | "Incorrect direction %d, unit 0x%016Lx on port " |
2241 | "0x%016Lx closed\n", | |
c41f8cbd | 2242 | req->qtcb->bottom.io.data_direction, |
7ba58c9c SS |
2243 | (unsigned long long)unit->fcp_lun, |
2244 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
2245 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 133, req); |
2246 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2247 | break; | |
2248 | case FSF_CMND_LENGTH_NOT_VALID: | |
2249 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
2250 | "Incorrect CDB length %d, unit 0x%016Lx on " |
2251 | "port 0x%016Lx closed\n", | |
c41f8cbd | 2252 | req->qtcb->bottom.io.fcp_cmnd_length, |
7ba58c9c SS |
2253 | (unsigned long long)unit->fcp_lun, |
2254 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
2255 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 134, req); |
2256 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2257 | break; | |
2258 | case FSF_PORT_BOXED: | |
2259 | zfcp_erp_port_boxed(unit->port, 53, req); | |
2260 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
2261 | ZFCP_STATUS_FSFREQ_RETRY; | |
2262 | break; | |
2263 | case FSF_LUN_BOXED: | |
2264 | zfcp_erp_unit_boxed(unit, 54, req); | |
2265 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
2266 | ZFCP_STATUS_FSFREQ_RETRY; | |
2267 | break; | |
2268 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
2269 | if (header->fsf_status_qual.word[0] == | |
2270 | FSF_SQ_INVOKE_LINK_TEST_PROCEDURE) | |
2271 | zfcp_test_link(unit->port); | |
2272 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 2273 | break; |
1da177e4 | 2274 | } |
c41f8cbd SS |
2275 | skip_fsfstatus: |
2276 | if (req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT) | |
2277 | zfcp_fsf_send_fcp_ctm_handler(req); | |
2278 | else { | |
2279 | zfcp_fsf_send_fcp_command_task_handler(req); | |
2280 | req->unit = NULL; | |
2281 | zfcp_unit_put(unit); | |
2282 | } | |
1da177e4 LT |
2283 | } |
2284 | ||
7ba58c9c SS |
2285 | static void zfcp_set_fcp_dl(struct fcp_cmnd_iu *fcp_cmd, u32 fcp_dl) |
2286 | { | |
2287 | u32 *fcp_dl_ptr; | |
2288 | ||
2289 | /* | |
2290 | * fcp_dl_addr = start address of fcp_cmnd structure + | |
2291 | * size of fixed part + size of dynamically sized add_dcp_cdb field | |
2292 | * SEE FCP-2 documentation | |
2293 | */ | |
2294 | fcp_dl_ptr = (u32 *) ((unsigned char *) &fcp_cmd[1] + | |
2295 | (fcp_cmd->add_fcp_cdb_length << 2)); | |
2296 | *fcp_dl_ptr = fcp_dl; | |
2297 | } | |
2298 | ||
c41f8cbd SS |
2299 | /** |
2300 | * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command) | |
2301 | * @adapter: adapter where scsi command is issued | |
2302 | * @unit: unit where command is sent to | |
2303 | * @scsi_cmnd: scsi command to be sent | |
2304 | * @timer: timer to be started when request is initiated | |
2305 | * @req_flags: flags for fsf_request | |
1da177e4 | 2306 | */ |
c41f8cbd SS |
2307 | int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter, |
2308 | struct zfcp_unit *unit, | |
2309 | struct scsi_cmnd *scsi_cmnd, | |
2310 | int use_timer, int req_flags) | |
1da177e4 | 2311 | { |
c41f8cbd SS |
2312 | struct zfcp_fsf_req *req; |
2313 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
2314 | unsigned int sbtype; | |
2315 | int real_bytes, retval = -EIO; | |
1da177e4 | 2316 | |
c41f8cbd SS |
2317 | if (unlikely(!(atomic_read(&unit->status) & |
2318 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2319 | return -EBUSY; | |
1da177e4 | 2320 | |
0406289e | 2321 | spin_lock(&adapter->req_q_lock); |
2450d3e7 | 2322 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd SS |
2323 | goto out; |
2324 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, | |
2325 | adapter->pool.fsf_req_scsi); | |
025270f0 | 2326 | if (IS_ERR(req)) { |
c41f8cbd SS |
2327 | retval = PTR_ERR(req); |
2328 | goto out; | |
2329 | } | |
2330 | ||
2331 | zfcp_unit_get(unit); | |
2332 | req->unit = unit; | |
2333 | req->data = scsi_cmnd; | |
2334 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2335 | req->qtcb->header.lun_handle = unit->handle; | |
2336 | req->qtcb->header.port_handle = unit->port->handle; | |
2337 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
2338 | ||
2339 | scsi_cmnd->host_scribble = (unsigned char *) req->req_id; | |
2340 | ||
2341 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) &(req->qtcb->bottom.io.fcp_cmnd); | |
2342 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
2343 | /* | |
2344 | * set depending on data direction: | |
2345 | * data direction bits in SBALE (SB Type) | |
2346 | * data direction bits in QTCB | |
2347 | * data direction bits in FCP_CMND IU | |
2348 | */ | |
2349 | switch (scsi_cmnd->sc_data_direction) { | |
2350 | case DMA_NONE: | |
2351 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
2352 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
1da177e4 | 2353 | break; |
c41f8cbd SS |
2354 | case DMA_FROM_DEVICE: |
2355 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ; | |
2356 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
2357 | fcp_cmnd_iu->rddata = 1; | |
2358 | break; | |
2359 | case DMA_TO_DEVICE: | |
2360 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE; | |
2361 | sbtype = SBAL_FLAGS0_TYPE_WRITE; | |
2362 | fcp_cmnd_iu->wddata = 1; | |
1da177e4 | 2363 | break; |
c41f8cbd | 2364 | case DMA_BIDIRECTIONAL: |
1da177e4 | 2365 | default: |
c41f8cbd SS |
2366 | retval = -EIO; |
2367 | goto failed_scsi_cmnd; | |
1da177e4 LT |
2368 | } |
2369 | ||
c41f8cbd SS |
2370 | if (likely((scsi_cmnd->device->simple_tags) || |
2371 | ((atomic_read(&unit->status) & ZFCP_STATUS_UNIT_READONLY) && | |
2372 | (atomic_read(&unit->status) & ZFCP_STATUS_UNIT_SHARED)))) | |
2373 | fcp_cmnd_iu->task_attribute = SIMPLE_Q; | |
2374 | else | |
2375 | fcp_cmnd_iu->task_attribute = UNTAGGED; | |
1da177e4 | 2376 | |
c41f8cbd SS |
2377 | if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH)) |
2378 | fcp_cmnd_iu->add_fcp_cdb_length = | |
2379 | (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2; | |
1da177e4 | 2380 | |
c41f8cbd | 2381 | memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); |
45633fdc | 2382 | |
c41f8cbd | 2383 | req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + |
7ba58c9c | 2384 | fcp_cmnd_iu->add_fcp_cdb_length + sizeof(u32); |
1da177e4 | 2385 | |
c41f8cbd SS |
2386 | real_bytes = zfcp_qdio_sbals_from_sg(req, sbtype, |
2387 | scsi_sglist(scsi_cmnd), | |
2388 | FSF_MAX_SBALS_PER_REQ); | |
2389 | if (unlikely(real_bytes < 0)) { | |
2390 | if (req->sbal_number < FSF_MAX_SBALS_PER_REQ) | |
2391 | retval = -EIO; | |
2392 | else { | |
2393 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
2394 | "Oversize data package, unit 0x%016Lx " |
2395 | "on port 0x%016Lx closed\n", | |
7ba58c9c SS |
2396 | (unsigned long long)unit->fcp_lun, |
2397 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
2398 | zfcp_erp_unit_shutdown(unit, 0, 131, req); |
2399 | retval = -EINVAL; | |
2400 | } | |
2401 | goto failed_scsi_cmnd; | |
1da177e4 | 2402 | } |
1da177e4 | 2403 | |
c41f8cbd | 2404 | zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes); |
1da177e4 | 2405 | |
c41f8cbd SS |
2406 | if (use_timer) |
2407 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1da177e4 | 2408 | |
c41f8cbd SS |
2409 | retval = zfcp_fsf_req_send(req); |
2410 | if (unlikely(retval)) | |
2411 | goto failed_scsi_cmnd; | |
1da177e4 | 2412 | |
c41f8cbd | 2413 | goto out; |
1da177e4 | 2414 | |
c41f8cbd SS |
2415 | failed_scsi_cmnd: |
2416 | zfcp_unit_put(unit); | |
2417 | zfcp_fsf_req_free(req); | |
2418 | scsi_cmnd->host_scribble = NULL; | |
2419 | out: | |
0406289e | 2420 | spin_unlock(&adapter->req_q_lock); |
c41f8cbd | 2421 | return retval; |
1da177e4 LT |
2422 | } |
2423 | ||
2424 | /** | |
c41f8cbd SS |
2425 | * zfcp_fsf_send_fcp_ctm - send SCSI task management command |
2426 | * @adapter: pointer to struct zfcp-adapter | |
2427 | * @unit: pointer to struct zfcp_unit | |
2428 | * @tm_flags: unsigned byte for task management flags | |
2429 | * @req_flags: int request flags | |
2430 | * Returns: on success pointer to struct fsf_req, NULL otherwise | |
1da177e4 | 2431 | */ |
c41f8cbd SS |
2432 | struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_adapter *adapter, |
2433 | struct zfcp_unit *unit, | |
2434 | u8 tm_flags, int req_flags) | |
1da177e4 | 2435 | { |
44cc76f2 | 2436 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2437 | struct zfcp_fsf_req *req = NULL; |
2438 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
1da177e4 | 2439 | |
c41f8cbd SS |
2440 | if (unlikely(!(atomic_read(&unit->status) & |
2441 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2442 | return NULL; | |
1da177e4 | 2443 | |
0406289e | 2444 | spin_lock(&adapter->req_q_lock); |
2450d3e7 | 2445 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd SS |
2446 | goto out; |
2447 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, | |
2448 | adapter->pool.fsf_req_scsi); | |
025270f0 | 2449 | if (IS_ERR(req)) |
c41f8cbd | 2450 | goto out; |
1da177e4 | 2451 | |
c41f8cbd SS |
2452 | req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT; |
2453 | req->data = unit; | |
2454 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2455 | req->qtcb->header.lun_handle = unit->handle; | |
2456 | req->qtcb->header.port_handle = unit->port->handle; | |
2457 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
2458 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
2459 | req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + | |
7ba58c9c | 2460 | sizeof(u32); |
c41f8cbd SS |
2461 | |
2462 | sbale = zfcp_qdio_sbale_req(req); | |
2463 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE; | |
2464 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 2465 | |
c41f8cbd SS |
2466 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) &req->qtcb->bottom.io.fcp_cmnd; |
2467 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
2468 | fcp_cmnd_iu->task_management_flags = tm_flags; | |
1da177e4 | 2469 | |
c41f8cbd SS |
2470 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); |
2471 | if (!zfcp_fsf_req_send(req)) | |
2472 | goto out; | |
1da177e4 | 2473 | |
c41f8cbd SS |
2474 | zfcp_fsf_req_free(req); |
2475 | req = NULL; | |
2476 | out: | |
0406289e | 2477 | spin_unlock(&adapter->req_q_lock); |
c41f8cbd SS |
2478 | return req; |
2479 | } | |
1da177e4 | 2480 | |
c41f8cbd SS |
2481 | static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req) |
2482 | { | |
2483 | if (req->qtcb->header.fsf_status != FSF_GOOD) | |
2484 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
2485 | } |
2486 | ||
c41f8cbd SS |
2487 | /** |
2488 | * zfcp_fsf_control_file - control file upload/download | |
2489 | * @adapter: pointer to struct zfcp_adapter | |
2490 | * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc | |
2491 | * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise | |
1da177e4 | 2492 | */ |
c41f8cbd SS |
2493 | struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, |
2494 | struct zfcp_fsf_cfdc *fsf_cfdc) | |
1da177e4 | 2495 | { |
44cc76f2 | 2496 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2497 | struct zfcp_fsf_req *req = NULL; |
2498 | struct fsf_qtcb_bottom_support *bottom; | |
2499 | int direction, retval = -EIO, bytes; | |
2500 | ||
2501 | if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) | |
2502 | return ERR_PTR(-EOPNOTSUPP); | |
2503 | ||
2504 | switch (fsf_cfdc->command) { | |
2505 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
2506 | direction = SBAL_FLAGS0_TYPE_WRITE; | |
2507 | break; | |
2508 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
2509 | direction = SBAL_FLAGS0_TYPE_READ; | |
2510 | break; | |
2511 | default: | |
2512 | return ERR_PTR(-EINVAL); | |
2513 | } | |
1da177e4 | 2514 | |
0406289e | 2515 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
2516 | if (zfcp_fsf_req_sbal_get(adapter)) |
2517 | goto out; | |
1da177e4 | 2518 | |
c41f8cbd | 2519 | req = zfcp_fsf_req_create(adapter, fsf_cfdc->command, 0, NULL); |
025270f0 | 2520 | if (IS_ERR(req)) { |
c41f8cbd SS |
2521 | retval = -EPERM; |
2522 | goto out; | |
2523 | } | |
1da177e4 | 2524 | |
c41f8cbd | 2525 | req->handler = zfcp_fsf_control_file_handler; |
1da177e4 | 2526 | |
c41f8cbd SS |
2527 | sbale = zfcp_qdio_sbale_req(req); |
2528 | sbale[0].flags |= direction; | |
8a36e453 | 2529 | |
c41f8cbd SS |
2530 | bottom = &req->qtcb->bottom.support; |
2531 | bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE; | |
2532 | bottom->option = fsf_cfdc->option; | |
8a36e453 | 2533 | |
c41f8cbd SS |
2534 | bytes = zfcp_qdio_sbals_from_sg(req, direction, fsf_cfdc->sg, |
2535 | FSF_MAX_SBALS_PER_REQ); | |
2536 | if (bytes != ZFCP_CFDC_MAX_SIZE) { | |
2537 | retval = -ENOMEM; | |
2538 | zfcp_fsf_req_free(req); | |
2539 | goto out; | |
2540 | } | |
1da177e4 | 2541 | |
c41f8cbd SS |
2542 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
2543 | retval = zfcp_fsf_req_send(req); | |
2544 | out: | |
0406289e | 2545 | spin_unlock_bh(&adapter->req_q_lock); |
8a36e453 | 2546 | |
c41f8cbd SS |
2547 | if (!retval) { |
2548 | wait_event(req->completion_wq, | |
2549 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
2550 | return req; | |
1da177e4 | 2551 | } |
c41f8cbd | 2552 | return ERR_PTR(retval); |
1da177e4 | 2553 | } |