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; | |
773 | int idx; | |
774 | ||
775 | /* put allocated FSF request into hash table */ | |
776 | spin_lock(&adapter->req_list_lock); | |
777 | idx = zfcp_reqlist_hash(req->req_id); | |
778 | list_add_tail(&req->list, &adapter->req_list[idx]); | |
779 | spin_unlock(&adapter->req_list_lock); | |
780 | ||
0997f1c5 | 781 | req->qdio_outb_usage = atomic_read(&req_q->count); |
c41f8cbd SS |
782 | req->issued = get_clock(); |
783 | if (zfcp_qdio_send(req)) { | |
784 | /* Queues are down..... */ | |
785 | del_timer(&req->timer); | |
786 | spin_lock(&adapter->req_list_lock); | |
787 | zfcp_reqlist_remove(adapter, req); | |
788 | spin_unlock(&adapter->req_list_lock); | |
789 | /* undo changes in request queue made for this request */ | |
790 | atomic_add(req->sbal_number, &req_q->count); | |
791 | req_q->first -= req->sbal_number; | |
792 | req_q->first += QDIO_MAX_BUFFERS_PER_Q; | |
793 | req_q->first %= QDIO_MAX_BUFFERS_PER_Q; /* wrap */ | |
794 | zfcp_erp_adapter_reopen(adapter, 0, 116, req); | |
795 | return -EIO; | |
796 | } | |
797 | ||
798 | /* Don't increase for unsolicited status */ | |
799 | if (req->qtcb) | |
800 | adapter->fsf_req_seq_no++; | |
801 | ||
802 | return 0; | |
803 | } | |
804 | ||
805 | /** | |
806 | * zfcp_fsf_status_read - send status read request | |
807 | * @adapter: pointer to struct zfcp_adapter | |
808 | * @req_flags: request flags | |
809 | * Returns: 0 on success, ERROR otherwise | |
1da177e4 | 810 | */ |
c41f8cbd | 811 | int zfcp_fsf_status_read(struct zfcp_adapter *adapter) |
1da177e4 | 812 | { |
c41f8cbd SS |
813 | struct zfcp_fsf_req *req; |
814 | struct fsf_status_read_buffer *sr_buf; | |
44cc76f2 | 815 | struct qdio_buffer_element *sbale; |
c41f8cbd | 816 | int retval = -EIO; |
1da177e4 | 817 | |
0406289e | 818 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
819 | if (zfcp_fsf_req_sbal_get(adapter)) |
820 | goto out; | |
821 | ||
822 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS, | |
823 | ZFCP_REQ_NO_QTCB, | |
824 | adapter->pool.fsf_req_status_read); | |
025270f0 | 825 | if (IS_ERR(req)) { |
c41f8cbd SS |
826 | retval = PTR_ERR(req); |
827 | goto out; | |
1da177e4 LT |
828 | } |
829 | ||
c41f8cbd SS |
830 | sbale = zfcp_qdio_sbale_req(req); |
831 | sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS; | |
832 | sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY; | |
833 | req->sbale_curr = 2; | |
834 | ||
835 | sr_buf = mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC); | |
836 | if (!sr_buf) { | |
837 | retval = -ENOMEM; | |
838 | goto failed_buf; | |
839 | } | |
840 | memset(sr_buf, 0, sizeof(*sr_buf)); | |
841 | req->data = sr_buf; | |
842 | sbale = zfcp_qdio_sbale_curr(req); | |
843 | sbale->addr = (void *) sr_buf; | |
844 | sbale->length = sizeof(*sr_buf); | |
059c97d0 | 845 | |
c41f8cbd SS |
846 | retval = zfcp_fsf_req_send(req); |
847 | if (retval) | |
848 | goto failed_req_send; | |
1da177e4 | 849 | |
c41f8cbd SS |
850 | goto out; |
851 | ||
852 | failed_req_send: | |
853 | mempool_free(sr_buf, adapter->pool.data_status_read); | |
854 | failed_buf: | |
855 | zfcp_fsf_req_free(req); | |
856 | zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL); | |
857 | out: | |
0406289e | 858 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
859 | return retval; |
860 | } | |
861 | ||
862 | static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req) | |
863 | { | |
864 | struct zfcp_unit *unit = req->data; | |
865 | union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual; | |
866 | ||
867 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
868 | return; | |
869 | ||
870 | switch (req->qtcb->header.fsf_status) { | |
1da177e4 | 871 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd | 872 | if (fsq->word[0] == fsq->word[1]) { |
9467a9b3 | 873 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 104, |
c41f8cbd SS |
874 | req); |
875 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
876 | } |
877 | break; | |
1da177e4 | 878 | case FSF_LUN_HANDLE_NOT_VALID: |
c41f8cbd SS |
879 | if (fsq->word[0] == fsq->word[1]) { |
880 | zfcp_erp_port_reopen(unit->port, 0, 105, req); | |
881 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
882 | } |
883 | break; | |
1da177e4 | 884 | case FSF_FCP_COMMAND_DOES_NOT_EXIST: |
c41f8cbd | 885 | req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED; |
1da177e4 | 886 | break; |
1da177e4 | 887 | case FSF_PORT_BOXED: |
c41f8cbd SS |
888 | zfcp_erp_port_boxed(unit->port, 47, req); |
889 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
890 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 891 | break; |
1da177e4 | 892 | case FSF_LUN_BOXED: |
c41f8cbd SS |
893 | zfcp_erp_unit_boxed(unit, 48, req); |
894 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
895 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 896 | break; |
1da177e4 | 897 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 898 | switch (fsq->word[0]) { |
1da177e4 | 899 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
65a8d4e1 | 900 | zfcp_test_link(unit->port); |
1da177e4 | 901 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 902 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 903 | break; |
1da177e4 LT |
904 | } |
905 | break; | |
1da177e4 | 906 | case FSF_GOOD: |
c41f8cbd | 907 | req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED; |
1da177e4 | 908 | break; |
1da177e4 | 909 | } |
1da177e4 LT |
910 | } |
911 | ||
912 | /** | |
c41f8cbd SS |
913 | * zfcp_fsf_abort_fcp_command - abort running SCSI command |
914 | * @old_req_id: unsigned long | |
915 | * @adapter: pointer to struct zfcp_adapter | |
916 | * @unit: pointer to struct zfcp_unit | |
917 | * @req_flags: integer specifying the request flags | |
918 | * Returns: pointer to struct zfcp_fsf_req | |
919 | * | |
920 | * FIXME(design): should be watched by a timeout !!! | |
1da177e4 | 921 | */ |
1da177e4 | 922 | |
c41f8cbd SS |
923 | struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id, |
924 | struct zfcp_adapter *adapter, | |
925 | struct zfcp_unit *unit, | |
926 | int req_flags) | |
1da177e4 | 927 | { |
44cc76f2 | 928 | struct qdio_buffer_element *sbale; |
c41f8cbd | 929 | struct zfcp_fsf_req *req = NULL; |
8a36e453 | 930 | |
0406289e | 931 | spin_lock(&adapter->req_q_lock); |
2450d3e7 | 932 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd SS |
933 | goto out; |
934 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND, | |
935 | req_flags, adapter->pool.fsf_req_abort); | |
025270f0 | 936 | if (IS_ERR(req)) |
c41f8cbd | 937 | goto out; |
2abbe866 | 938 | |
c41f8cbd SS |
939 | if (unlikely(!(atomic_read(&unit->status) & |
940 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
941 | goto out_error_free; | |
1da177e4 | 942 | |
c41f8cbd SS |
943 | sbale = zfcp_qdio_sbale_req(req); |
944 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
945 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 946 | |
c41f8cbd SS |
947 | req->data = unit; |
948 | req->handler = zfcp_fsf_abort_fcp_command_handler; | |
949 | req->qtcb->header.lun_handle = unit->handle; | |
950 | req->qtcb->header.port_handle = unit->port->handle; | |
951 | req->qtcb->bottom.support.req_handle = (u64) old_req_id; | |
952 | ||
953 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); | |
954 | if (!zfcp_fsf_req_send(req)) | |
955 | goto out; | |
956 | ||
957 | out_error_free: | |
958 | zfcp_fsf_req_free(req); | |
959 | req = NULL; | |
960 | out: | |
0406289e | 961 | spin_unlock(&adapter->req_q_lock); |
c41f8cbd | 962 | return req; |
1da177e4 LT |
963 | } |
964 | ||
c41f8cbd | 965 | static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) |
1da177e4 | 966 | { |
c41f8cbd SS |
967 | struct zfcp_adapter *adapter = req->adapter; |
968 | struct zfcp_send_ct *send_ct = req->data; | |
c41f8cbd | 969 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1da177e4 | 970 | |
c41f8cbd | 971 | send_ct->status = -EINVAL; |
1da177e4 | 972 | |
c41f8cbd | 973 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
974 | goto skip_fsfstatus; |
975 | ||
1da177e4 | 976 | switch (header->fsf_status) { |
1da177e4 | 977 | case FSF_GOOD: |
c41f8cbd SS |
978 | zfcp_san_dbf_event_ct_response(req); |
979 | send_ct->status = 0; | |
1da177e4 | 980 | break; |
1da177e4 | 981 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 982 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 983 | break; |
1da177e4 | 984 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
985 | switch (header->fsf_status_qual.word[0]){ |
986 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 987 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 988 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 989 | break; |
1da177e4 LT |
990 | } |
991 | break; | |
1da177e4 | 992 | case FSF_ACCESS_DENIED: |
1da177e4 | 993 | break; |
1da177e4 | 994 | case FSF_PORT_BOXED: |
c41f8cbd SS |
995 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
996 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 997 | break; |
c41f8cbd SS |
998 | case FSF_PORT_HANDLE_NOT_VALID: |
999 | zfcp_erp_adapter_reopen(adapter, 0, 106, req); | |
1000 | case FSF_GENERIC_COMMAND_REJECTED: | |
1da177e4 | 1001 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1002 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1003 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1004 | case FSF_SBAL_MISMATCH: |
c41f8cbd | 1005 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1006 | break; |
1007 | } | |
1008 | ||
1009 | skip_fsfstatus: | |
c41f8cbd | 1010 | if (send_ct->handler) |
1da177e4 | 1011 | send_ct->handler(send_ct->handler_data); |
c41f8cbd | 1012 | } |
1da177e4 | 1013 | |
c41f8cbd SS |
1014 | static int zfcp_fsf_setup_sbals(struct zfcp_fsf_req *req, |
1015 | struct scatterlist *sg_req, | |
1016 | struct scatterlist *sg_resp, int max_sbals) | |
1017 | { | |
1018 | int bytes; | |
1019 | ||
1020 | bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, | |
1021 | sg_req, max_sbals); | |
1022 | if (bytes <= 0) | |
1023 | return -ENOMEM; | |
1024 | req->qtcb->bottom.support.req_buf_length = bytes; | |
1025 | req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; | |
1026 | ||
1027 | bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, | |
1028 | sg_resp, max_sbals); | |
1029 | if (bytes <= 0) | |
1030 | return -ENOMEM; | |
1031 | req->qtcb->bottom.support.resp_buf_length = bytes; | |
1032 | ||
1033 | return 0; | |
1da177e4 LT |
1034 | } |
1035 | ||
1036 | /** | |
c41f8cbd SS |
1037 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) |
1038 | * @ct: pointer to struct zfcp_send_ct with data for request | |
1039 | * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req | |
1040 | * @erp_action: if non-null the Generic Service request sent within ERP | |
1da177e4 | 1041 | */ |
c41f8cbd SS |
1042 | int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, |
1043 | struct zfcp_erp_action *erp_action) | |
1da177e4 | 1044 | { |
5ab944f9 SS |
1045 | struct zfcp_wka_port *wka_port = ct->wka_port; |
1046 | struct zfcp_adapter *adapter = wka_port->adapter; | |
c41f8cbd SS |
1047 | struct zfcp_fsf_req *req; |
1048 | int ret = -EIO; | |
1da177e4 | 1049 | |
0406289e | 1050 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1051 | if (zfcp_fsf_req_sbal_get(adapter)) |
1052 | goto out; | |
1da177e4 | 1053 | |
c41f8cbd SS |
1054 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC, |
1055 | ZFCP_REQ_AUTO_CLEANUP, pool); | |
025270f0 | 1056 | if (IS_ERR(req)) { |
c41f8cbd SS |
1057 | ret = PTR_ERR(req); |
1058 | goto out; | |
3f0ca62a CS |
1059 | } |
1060 | ||
c41f8cbd SS |
1061 | ret = zfcp_fsf_setup_sbals(req, ct->req, ct->resp, |
1062 | FSF_MAX_SBALS_PER_REQ); | |
553448f6 | 1063 | if (ret) |
1da177e4 | 1064 | goto failed_send; |
1da177e4 | 1065 | |
c41f8cbd | 1066 | req->handler = zfcp_fsf_send_ct_handler; |
5ab944f9 | 1067 | req->qtcb->header.port_handle = wka_port->handle; |
c41f8cbd SS |
1068 | req->qtcb->bottom.support.service_class = FSF_CLASS_3; |
1069 | req->qtcb->bottom.support.timeout = ct->timeout; | |
1070 | req->data = ct; | |
1071 | ||
1072 | zfcp_san_dbf_event_ct_request(req); | |
1073 | ||
1074 | if (erp_action) { | |
1075 | erp_action->fsf_req = req; | |
1076 | req->erp_action = erp_action; | |
287ac01a | 1077 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
1078 | } else |
1079 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1da177e4 | 1080 | |
c41f8cbd SS |
1081 | ret = zfcp_fsf_req_send(req); |
1082 | if (ret) | |
1083 | goto failed_send; | |
1da177e4 | 1084 | |
c41f8cbd | 1085 | goto out; |
1da177e4 | 1086 | |
c41f8cbd SS |
1087 | failed_send: |
1088 | zfcp_fsf_req_free(req); | |
1089 | if (erp_action) | |
1090 | erp_action->fsf_req = NULL; | |
1091 | out: | |
0406289e | 1092 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 1093 | return ret; |
1da177e4 LT |
1094 | } |
1095 | ||
c41f8cbd | 1096 | static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1097 | { |
c41f8cbd SS |
1098 | struct zfcp_send_els *send_els = req->data; |
1099 | struct zfcp_port *port = send_els->port; | |
1100 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1101 | |
c41f8cbd | 1102 | send_els->status = -EINVAL; |
1da177e4 | 1103 | |
c41f8cbd | 1104 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
1105 | goto skip_fsfstatus; |
1106 | ||
1107 | switch (header->fsf_status) { | |
1da177e4 | 1108 | case FSF_GOOD: |
c41f8cbd SS |
1109 | zfcp_san_dbf_event_els_response(req); |
1110 | send_els->status = 0; | |
1da177e4 | 1111 | break; |
1da177e4 | 1112 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 1113 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 1114 | break; |
1da177e4 | 1115 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1116 | switch (header->fsf_status_qual.word[0]){ |
1117 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
64b29a13 AH |
1118 | if (port && (send_els->ls_code != ZFCP_LS_ADISC)) |
1119 | zfcp_test_link(port); | |
c41f8cbd | 1120 | /*fall through */ |
1da177e4 | 1121 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1122 | case FSF_SQ_RETRY_IF_POSSIBLE: |
c41f8cbd | 1123 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1124 | break; |
1da177e4 LT |
1125 | } |
1126 | break; | |
1da177e4 | 1127 | case FSF_ELS_COMMAND_REJECTED: |
1da177e4 | 1128 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1129 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1130 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1131 | break; |
1da177e4 | 1132 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1133 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1134 | break; |
c41f8cbd SS |
1135 | case FSF_SBAL_MISMATCH: |
1136 | /* should never occure, avoided in zfcp_fsf_send_els */ | |
1137 | /* fall through */ | |
1da177e4 | 1138 | default: |
c41f8cbd | 1139 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1140 | break; |
1141 | } | |
1da177e4 | 1142 | skip_fsfstatus: |
aa551daf | 1143 | if (send_els->handler) |
1da177e4 | 1144 | send_els->handler(send_els->handler_data); |
c41f8cbd | 1145 | } |
1da177e4 | 1146 | |
c41f8cbd SS |
1147 | /** |
1148 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) | |
1149 | * @els: pointer to struct zfcp_send_els with data for the command | |
1150 | */ | |
1151 | int zfcp_fsf_send_els(struct zfcp_send_els *els) | |
1152 | { | |
1153 | struct zfcp_fsf_req *req; | |
1154 | struct zfcp_adapter *adapter = els->adapter; | |
1155 | struct fsf_qtcb_bottom_support *bottom; | |
1156 | int ret = -EIO; | |
1157 | ||
1158 | if (unlikely(!(atomic_read(&els->port->status) & | |
1159 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
1160 | return -EBUSY; | |
1161 | ||
0406289e | 1162 | spin_lock(&adapter->req_q_lock); |
2450d3e7 | 1163 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd SS |
1164 | goto out; |
1165 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS, | |
1166 | ZFCP_REQ_AUTO_CLEANUP, NULL); | |
025270f0 | 1167 | if (IS_ERR(req)) { |
c41f8cbd SS |
1168 | ret = PTR_ERR(req); |
1169 | goto out; | |
1170 | } | |
1171 | ||
44cc76f2 SS |
1172 | ret = zfcp_fsf_setup_sbals(req, els->req, els->resp, 2); |
1173 | ||
c41f8cbd SS |
1174 | if (ret) |
1175 | goto failed_send; | |
1176 | ||
1177 | bottom = &req->qtcb->bottom.support; | |
1178 | req->handler = zfcp_fsf_send_els_handler; | |
1179 | bottom->d_id = els->d_id; | |
1180 | bottom->service_class = FSF_CLASS_3; | |
1181 | bottom->timeout = 2 * R_A_TOV; | |
1182 | req->data = els; | |
1183 | ||
1184 | zfcp_san_dbf_event_els_request(req); | |
1185 | ||
1186 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1187 | ret = zfcp_fsf_req_send(req); | |
1188 | if (ret) | |
1189 | goto failed_send; | |
1190 | ||
1191 | goto out; | |
1192 | ||
1193 | failed_send: | |
1194 | zfcp_fsf_req_free(req); | |
1195 | out: | |
0406289e | 1196 | spin_unlock(&adapter->req_q_lock); |
c41f8cbd | 1197 | return ret; |
1da177e4 LT |
1198 | } |
1199 | ||
c41f8cbd | 1200 | int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1201 | { |
44cc76f2 | 1202 | struct qdio_buffer_element *sbale; |
c41f8cbd | 1203 | struct zfcp_fsf_req *req; |
52ef11a7 | 1204 | struct zfcp_adapter *adapter = erp_action->adapter; |
c41f8cbd SS |
1205 | int retval = -EIO; |
1206 | ||
0406289e | 1207 | spin_lock_bh(&adapter->req_q_lock); |
2450d3e7 | 1208 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd SS |
1209 | goto out; |
1210 | req = zfcp_fsf_req_create(adapter, | |
1211 | FSF_QTCB_EXCHANGE_CONFIG_DATA, | |
1212 | ZFCP_REQ_AUTO_CLEANUP, | |
1213 | adapter->pool.fsf_req_erp); | |
025270f0 | 1214 | if (IS_ERR(req)) { |
c41f8cbd SS |
1215 | retval = PTR_ERR(req); |
1216 | goto out; | |
1da177e4 LT |
1217 | } |
1218 | ||
c41f8cbd | 1219 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1220 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1221 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1222 | |
c41f8cbd | 1223 | req->qtcb->bottom.config.feature_selection = |
aef4a983 MS |
1224 | FSF_FEATURE_CFDC | |
1225 | FSF_FEATURE_LUN_SHARING | | |
9eb69aff | 1226 | FSF_FEATURE_NOTIFICATION_LOST | |
aef4a983 | 1227 | FSF_FEATURE_UPDATE_ALERT; |
c41f8cbd SS |
1228 | req->erp_action = erp_action; |
1229 | req->handler = zfcp_fsf_exchange_config_data_handler; | |
1230 | erp_action->fsf_req = req; | |
1da177e4 | 1231 | |
287ac01a | 1232 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1233 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1234 | if (retval) { |
c41f8cbd | 1235 | zfcp_fsf_req_free(req); |
1da177e4 | 1236 | erp_action->fsf_req = NULL; |
1da177e4 | 1237 | } |
c41f8cbd | 1238 | out: |
0406289e | 1239 | spin_unlock_bh(&adapter->req_q_lock); |
52ef11a7 SS |
1240 | return retval; |
1241 | } | |
1da177e4 | 1242 | |
c41f8cbd SS |
1243 | int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter, |
1244 | struct fsf_qtcb_bottom_config *data) | |
52ef11a7 | 1245 | { |
44cc76f2 | 1246 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1247 | struct zfcp_fsf_req *req = NULL; |
1248 | int retval = -EIO; | |
1249 | ||
0406289e | 1250 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1251 | if (zfcp_fsf_req_sbal_get(adapter)) |
1252 | goto out; | |
1253 | ||
1254 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA, | |
1255 | 0, NULL); | |
025270f0 | 1256 | if (IS_ERR(req)) { |
c41f8cbd SS |
1257 | retval = PTR_ERR(req); |
1258 | goto out; | |
52ef11a7 SS |
1259 | } |
1260 | ||
c41f8cbd | 1261 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1262 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1263 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
c41f8cbd | 1264 | req->handler = zfcp_fsf_exchange_config_data_handler; |
52ef11a7 | 1265 | |
c41f8cbd | 1266 | req->qtcb->bottom.config.feature_selection = |
52ef11a7 SS |
1267 | FSF_FEATURE_CFDC | |
1268 | FSF_FEATURE_LUN_SHARING | | |
1269 | FSF_FEATURE_NOTIFICATION_LOST | | |
1270 | FSF_FEATURE_UPDATE_ALERT; | |
1271 | ||
1272 | if (data) | |
c41f8cbd | 1273 | req->data = data; |
52ef11a7 | 1274 | |
c41f8cbd SS |
1275 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
1276 | retval = zfcp_fsf_req_send(req); | |
1277 | out: | |
0406289e | 1278 | spin_unlock_bh(&adapter->req_q_lock); |
553448f6 | 1279 | if (!retval) |
c41f8cbd SS |
1280 | wait_event(req->completion_wq, |
1281 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
52ef11a7 | 1282 | |
c41f8cbd | 1283 | zfcp_fsf_req_free(req); |
52ef11a7 | 1284 | |
1da177e4 LT |
1285 | return retval; |
1286 | } | |
1287 | ||
1da177e4 LT |
1288 | /** |
1289 | * zfcp_fsf_exchange_port_data - request information about local port | |
aef4a983 | 1290 | * @erp_action: ERP action for the adapter for which port data is requested |
c41f8cbd | 1291 | * Returns: 0 on success, error otherwise |
1da177e4 | 1292 | */ |
c41f8cbd | 1293 | int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1294 | { |
44cc76f2 | 1295 | struct qdio_buffer_element *sbale; |
c41f8cbd | 1296 | struct zfcp_fsf_req *req; |
52ef11a7 | 1297 | struct zfcp_adapter *adapter = erp_action->adapter; |
c41f8cbd | 1298 | int retval = -EIO; |
1da177e4 | 1299 | |
553448f6 | 1300 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1301 | return -EOPNOTSUPP; |
1da177e4 | 1302 | |
0406289e | 1303 | spin_lock_bh(&adapter->req_q_lock); |
2450d3e7 | 1304 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd SS |
1305 | goto out; |
1306 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, | |
1307 | ZFCP_REQ_AUTO_CLEANUP, | |
1308 | adapter->pool.fsf_req_erp); | |
025270f0 | 1309 | if (IS_ERR(req)) { |
c41f8cbd SS |
1310 | retval = PTR_ERR(req); |
1311 | goto out; | |
aef4a983 MS |
1312 | } |
1313 | ||
c41f8cbd | 1314 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1315 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1316 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1317 | |
c41f8cbd SS |
1318 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1319 | req->erp_action = erp_action; | |
1320 | erp_action->fsf_req = req; | |
52ef11a7 | 1321 | |
287ac01a | 1322 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1323 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1324 | if (retval) { |
c41f8cbd | 1325 | zfcp_fsf_req_free(req); |
52ef11a7 SS |
1326 | erp_action->fsf_req = NULL; |
1327 | } | |
c41f8cbd | 1328 | out: |
0406289e | 1329 | spin_unlock_bh(&adapter->req_q_lock); |
52ef11a7 SS |
1330 | return retval; |
1331 | } | |
1332 | ||
52ef11a7 SS |
1333 | /** |
1334 | * zfcp_fsf_exchange_port_data_sync - request information about local port | |
c41f8cbd SS |
1335 | * @adapter: pointer to struct zfcp_adapter |
1336 | * @data: pointer to struct fsf_qtcb_bottom_port | |
1337 | * Returns: 0 on success, error otherwise | |
52ef11a7 | 1338 | */ |
c41f8cbd SS |
1339 | int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, |
1340 | struct fsf_qtcb_bottom_port *data) | |
52ef11a7 | 1341 | { |
44cc76f2 | 1342 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1343 | struct zfcp_fsf_req *req = NULL; |
1344 | int retval = -EIO; | |
52ef11a7 | 1345 | |
553448f6 | 1346 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1347 | return -EOPNOTSUPP; |
52ef11a7 | 1348 | |
0406289e | 1349 | spin_lock_bh(&adapter->req_q_lock); |
2450d3e7 | 1350 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd SS |
1351 | goto out; |
1352 | ||
1353 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, 0, | |
1354 | NULL); | |
025270f0 | 1355 | if (IS_ERR(req)) { |
c41f8cbd SS |
1356 | retval = PTR_ERR(req); |
1357 | goto out; | |
1da177e4 LT |
1358 | } |
1359 | ||
52ef11a7 | 1360 | if (data) |
c41f8cbd | 1361 | req->data = data; |
52ef11a7 | 1362 | |
c41f8cbd | 1363 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1364 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1365 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1366 | ||
c41f8cbd SS |
1367 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1368 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1369 | retval = zfcp_fsf_req_send(req); | |
1370 | out: | |
0406289e | 1371 | spin_unlock_bh(&adapter->req_q_lock); |
553448f6 | 1372 | if (!retval) |
c41f8cbd SS |
1373 | wait_event(req->completion_wq, |
1374 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
1375 | zfcp_fsf_req_free(req); | |
1da177e4 | 1376 | |
1da177e4 LT |
1377 | return retval; |
1378 | } | |
1379 | ||
c41f8cbd | 1380 | static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1381 | { |
c41f8cbd SS |
1382 | struct zfcp_port *port = req->data; |
1383 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1384 | struct fsf_plogi *plogi; |
1da177e4 | 1385 | |
c41f8cbd | 1386 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1387 | return; |
1da177e4 | 1388 | |
1da177e4 | 1389 | switch (header->fsf_status) { |
1da177e4 | 1390 | case FSF_PORT_ALREADY_OPEN: |
1da177e4 | 1391 | break; |
1da177e4 | 1392 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1393 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1394 | break; |
1da177e4 | 1395 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: |
c41f8cbd | 1396 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 1397 | "Not enough FCP adapter resources to open " |
7ba58c9c SS |
1398 | "remote port 0x%016Lx\n", |
1399 | (unsigned long long)port->wwpn); | |
c41f8cbd SS |
1400 | zfcp_erp_port_failed(port, 31, req); |
1401 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1402 | break; |
1da177e4 | 1403 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1404 | switch (header->fsf_status_qual.word[0]) { |
1405 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1406 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1407 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1408 | break; |
1409 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
c41f8cbd | 1410 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 1411 | "Remote port 0x%016Lx could not be opened\n", |
7ba58c9c | 1412 | (unsigned long long)port->wwpn); |
c41f8cbd SS |
1413 | zfcp_erp_port_failed(port, 32, req); |
1414 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
1415 | break; |
1416 | } | |
1417 | break; | |
1da177e4 | 1418 | case FSF_GOOD: |
1da177e4 | 1419 | port->handle = header->port_handle; |
1da177e4 LT |
1420 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN | |
1421 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
d736a27b AH |
1422 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
1423 | ZFCP_STATUS_COMMON_ACCESS_BOXED, | |
1424 | &port->status); | |
1da177e4 LT |
1425 | /* check whether D_ID has changed during open */ |
1426 | /* | |
1427 | * FIXME: This check is not airtight, as the FCP channel does | |
1428 | * not monitor closures of target port connections caused on | |
1429 | * the remote side. Thus, they might miss out on invalidating | |
1430 | * locally cached WWPNs (and other N_Port parameters) of gone | |
1431 | * target ports. So, our heroic attempt to make things safe | |
1432 | * could be undermined by 'open port' response data tagged with | |
1433 | * obsolete WWPNs. Another reason to monitor potential | |
1434 | * connection closures ourself at least (by interpreting | |
1435 | * incoming ELS' and unsolicited status). It just crosses my | |
1436 | * mind that one should be able to cross-check by means of | |
1437 | * another GID_PN straight after a port has been opened. | |
1438 | * Alternately, an ADISC/PDISC ELS should suffice, as well. | |
1439 | */ | |
c41f8cbd SS |
1440 | plogi = (struct fsf_plogi *) req->qtcb->bottom.support.els; |
1441 | if (req->qtcb->bottom.support.els1_length >= sizeof(*plogi)) { | |
1442 | if (plogi->serv_param.wwpn != port->wwpn) | |
1443 | atomic_clear_mask(ZFCP_STATUS_PORT_DID_DID, | |
1444 | &port->status); | |
1445 | else { | |
1446 | port->wwnn = plogi->serv_param.wwnn; | |
1447 | zfcp_fc_plogi_evaluate(port, plogi); | |
1da177e4 LT |
1448 | } |
1449 | } | |
1450 | break; | |
1da177e4 | 1451 | case FSF_UNKNOWN_OP_SUBTYPE: |
c41f8cbd | 1452 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1453 | break; |
1454 | } | |
1da177e4 LT |
1455 | } |
1456 | ||
c41f8cbd SS |
1457 | /** |
1458 | * zfcp_fsf_open_port - create and send open port request | |
1459 | * @erp_action: pointer to struct zfcp_erp_action | |
1460 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1461 | */ |
c41f8cbd | 1462 | int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1463 | { |
44cc76f2 | 1464 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1465 | struct zfcp_adapter *adapter = erp_action->adapter; |
1466 | struct zfcp_fsf_req *req; | |
1467 | int retval = -EIO; | |
1468 | ||
0406289e | 1469 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1470 | if (zfcp_fsf_req_sbal_get(adapter)) |
1471 | goto out; | |
1472 | ||
1473 | req = zfcp_fsf_req_create(adapter, | |
1474 | FSF_QTCB_OPEN_PORT_WITH_DID, | |
1475 | ZFCP_REQ_AUTO_CLEANUP, | |
1476 | adapter->pool.fsf_req_erp); | |
025270f0 | 1477 | if (IS_ERR(req)) { |
c41f8cbd | 1478 | retval = PTR_ERR(req); |
1da177e4 | 1479 | goto out; |
c41f8cbd | 1480 | } |
1da177e4 | 1481 | |
c41f8cbd | 1482 | sbale = zfcp_qdio_sbale_req(req); |
1da177e4 LT |
1483 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1484 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1485 | ||
c41f8cbd SS |
1486 | req->handler = zfcp_fsf_open_port_handler; |
1487 | req->qtcb->bottom.support.d_id = erp_action->port->d_id; | |
1488 | req->data = erp_action->port; | |
1489 | req->erp_action = erp_action; | |
1490 | erp_action->fsf_req = req; | |
c41f8cbd | 1491 | |
287ac01a | 1492 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1493 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1494 | if (retval) { |
c41f8cbd | 1495 | zfcp_fsf_req_free(req); |
1da177e4 | 1496 | erp_action->fsf_req = NULL; |
1da177e4 | 1497 | } |
c41f8cbd | 1498 | out: |
0406289e | 1499 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1500 | return retval; |
1501 | } | |
1502 | ||
c41f8cbd | 1503 | static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1504 | { |
c41f8cbd | 1505 | struct zfcp_port *port = req->data; |
1da177e4 | 1506 | |
c41f8cbd | 1507 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1508 | return; |
1da177e4 | 1509 | |
c41f8cbd | 1510 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1511 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd SS |
1512 | zfcp_erp_adapter_reopen(port->adapter, 0, 107, req); |
1513 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1514 | break; |
1da177e4 | 1515 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 | 1516 | break; |
1da177e4 | 1517 | case FSF_GOOD: |
c41f8cbd | 1518 | zfcp_erp_modify_port_status(port, 33, req, |
1da177e4 LT |
1519 | ZFCP_STATUS_COMMON_OPEN, |
1520 | ZFCP_CLEAR); | |
1da177e4 | 1521 | break; |
1da177e4 | 1522 | } |
1da177e4 LT |
1523 | } |
1524 | ||
c41f8cbd SS |
1525 | /** |
1526 | * zfcp_fsf_close_port - create and send close port request | |
1527 | * @erp_action: pointer to struct zfcp_erp_action | |
1528 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1529 | */ |
c41f8cbd | 1530 | int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1531 | { |
44cc76f2 | 1532 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1533 | struct zfcp_adapter *adapter = erp_action->adapter; |
1534 | struct zfcp_fsf_req *req; | |
1535 | int retval = -EIO; | |
1536 | ||
0406289e | 1537 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1538 | if (zfcp_fsf_req_sbal_get(adapter)) |
1539 | goto out; | |
1540 | ||
1541 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT, | |
1542 | ZFCP_REQ_AUTO_CLEANUP, | |
1543 | adapter->pool.fsf_req_erp); | |
025270f0 | 1544 | if (IS_ERR(req)) { |
c41f8cbd | 1545 | retval = PTR_ERR(req); |
1da177e4 | 1546 | goto out; |
c41f8cbd | 1547 | } |
1da177e4 | 1548 | |
c41f8cbd | 1549 | sbale = zfcp_qdio_sbale_req(req); |
1da177e4 LT |
1550 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1551 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1552 | ||
c41f8cbd SS |
1553 | req->handler = zfcp_fsf_close_port_handler; |
1554 | req->data = erp_action->port; | |
1555 | req->erp_action = erp_action; | |
1556 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1557 | erp_action->fsf_req = req; | |
c41f8cbd | 1558 | |
287ac01a | 1559 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1560 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1561 | if (retval) { |
c41f8cbd | 1562 | zfcp_fsf_req_free(req); |
1da177e4 | 1563 | erp_action->fsf_req = NULL; |
1da177e4 | 1564 | } |
c41f8cbd | 1565 | out: |
0406289e | 1566 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1567 | return retval; |
1568 | } | |
1569 | ||
5ab944f9 SS |
1570 | static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req) |
1571 | { | |
1572 | struct zfcp_wka_port *wka_port = req->data; | |
1573 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1574 | ||
1575 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
1576 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1577 | goto out; | |
1578 | } | |
1579 | ||
1580 | switch (header->fsf_status) { | |
1581 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: | |
1582 | dev_warn(&req->adapter->ccw_device->dev, | |
1583 | "Opening WKA port 0x%x failed\n", wka_port->d_id); | |
1584 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1585 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1586 | case FSF_ACCESS_DENIED: | |
1587 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1588 | break; | |
1589 | case FSF_PORT_ALREADY_OPEN: | |
1590 | case FSF_GOOD: | |
1591 | wka_port->handle = header->port_handle; | |
1592 | wka_port->status = ZFCP_WKA_PORT_ONLINE; | |
1593 | } | |
1594 | out: | |
1595 | wake_up(&wka_port->completion_wq); | |
1596 | } | |
1597 | ||
1598 | /** | |
1599 | * zfcp_fsf_open_wka_port - create and send open wka-port request | |
1600 | * @wka_port: pointer to struct zfcp_wka_port | |
1601 | * Returns: 0 on success, error otherwise | |
1602 | */ | |
1603 | int zfcp_fsf_open_wka_port(struct zfcp_wka_port *wka_port) | |
1604 | { | |
1605 | struct qdio_buffer_element *sbale; | |
1606 | struct zfcp_adapter *adapter = wka_port->adapter; | |
1607 | struct zfcp_fsf_req *req; | |
1608 | int retval = -EIO; | |
1609 | ||
0406289e | 1610 | spin_lock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1611 | if (zfcp_fsf_req_sbal_get(adapter)) |
1612 | goto out; | |
1613 | ||
1614 | req = zfcp_fsf_req_create(adapter, | |
1615 | FSF_QTCB_OPEN_PORT_WITH_DID, | |
1616 | ZFCP_REQ_AUTO_CLEANUP, | |
1617 | adapter->pool.fsf_req_erp); | |
1618 | if (unlikely(IS_ERR(req))) { | |
1619 | retval = PTR_ERR(req); | |
1620 | goto out; | |
1621 | } | |
1622 | ||
1623 | sbale = zfcp_qdio_sbale_req(req); | |
1624 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1625 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1626 | ||
1627 | req->handler = zfcp_fsf_open_wka_port_handler; | |
1628 | req->qtcb->bottom.support.d_id = wka_port->d_id; | |
1629 | req->data = wka_port; | |
1630 | ||
1631 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1632 | retval = zfcp_fsf_req_send(req); | |
1633 | if (retval) | |
1634 | zfcp_fsf_req_free(req); | |
1635 | out: | |
0406289e | 1636 | spin_unlock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1637 | return retval; |
1638 | } | |
1639 | ||
1640 | static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req) | |
1641 | { | |
1642 | struct zfcp_wka_port *wka_port = req->data; | |
1643 | ||
1644 | if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) { | |
1645 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
41bfcf90 | 1646 | zfcp_erp_adapter_reopen(wka_port->adapter, 0, 84, req); |
5ab944f9 SS |
1647 | } |
1648 | ||
1649 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1650 | wake_up(&wka_port->completion_wq); | |
1651 | } | |
1652 | ||
1653 | /** | |
1654 | * zfcp_fsf_close_wka_port - create and send close wka port request | |
1655 | * @erp_action: pointer to struct zfcp_erp_action | |
1656 | * Returns: 0 on success, error otherwise | |
1657 | */ | |
1658 | int zfcp_fsf_close_wka_port(struct zfcp_wka_port *wka_port) | |
1659 | { | |
1660 | struct qdio_buffer_element *sbale; | |
1661 | struct zfcp_adapter *adapter = wka_port->adapter; | |
1662 | struct zfcp_fsf_req *req; | |
1663 | int retval = -EIO; | |
1664 | ||
0406289e | 1665 | spin_lock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1666 | if (zfcp_fsf_req_sbal_get(adapter)) |
1667 | goto out; | |
1668 | ||
1669 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT, | |
1670 | ZFCP_REQ_AUTO_CLEANUP, | |
1671 | adapter->pool.fsf_req_erp); | |
1672 | if (unlikely(IS_ERR(req))) { | |
1673 | retval = PTR_ERR(req); | |
1674 | goto out; | |
1675 | } | |
1676 | ||
1677 | sbale = zfcp_qdio_sbale_req(req); | |
1678 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1679 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1680 | ||
1681 | req->handler = zfcp_fsf_close_wka_port_handler; | |
1682 | req->data = wka_port; | |
1683 | req->qtcb->header.port_handle = wka_port->handle; | |
1684 | ||
1685 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1686 | retval = zfcp_fsf_req_send(req); | |
1687 | if (retval) | |
1688 | zfcp_fsf_req_free(req); | |
1689 | out: | |
0406289e | 1690 | spin_unlock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1691 | return retval; |
1692 | } | |
1693 | ||
c41f8cbd | 1694 | static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1695 | { |
c41f8cbd SS |
1696 | struct zfcp_port *port = req->data; |
1697 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1698 | struct zfcp_unit *unit; |
1da177e4 | 1699 | |
c41f8cbd | 1700 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 | 1701 | goto skip_fsfstatus; |
1da177e4 | 1702 | |
1da177e4 | 1703 | switch (header->fsf_status) { |
1da177e4 | 1704 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd SS |
1705 | zfcp_erp_adapter_reopen(port->adapter, 0, 108, req); |
1706 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1707 | break; |
1da177e4 | 1708 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1709 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1710 | break; |
1da177e4 | 1711 | case FSF_PORT_BOXED: |
c41f8cbd SS |
1712 | zfcp_erp_port_boxed(port, 50, req); |
1713 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
1714 | ZFCP_STATUS_FSFREQ_RETRY; | |
5c815d15 CS |
1715 | /* can't use generic zfcp_erp_modify_port_status because |
1716 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */ | |
1717 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
1718 | list_for_each_entry(unit, &port->unit_list_head, list) | |
1719 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, | |
1720 | &unit->status); | |
1da177e4 | 1721 | break; |
1da177e4 | 1722 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1723 | switch (header->fsf_status_qual.word[0]) { |
1724 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
c41f8cbd | 1725 | /* fall through */ |
1da177e4 | 1726 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1727 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1728 | break; |
1da177e4 LT |
1729 | } |
1730 | break; | |
1da177e4 | 1731 | case FSF_GOOD: |
1da177e4 LT |
1732 | /* can't use generic zfcp_erp_modify_port_status because |
1733 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port | |
1734 | */ | |
1735 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
1736 | list_for_each_entry(unit, &port->unit_list_head, list) | |
c41f8cbd SS |
1737 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, |
1738 | &unit->status); | |
1da177e4 | 1739 | break; |
1da177e4 | 1740 | } |
c41f8cbd | 1741 | skip_fsfstatus: |
1da177e4 | 1742 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, &port->status); |
1da177e4 LT |
1743 | } |
1744 | ||
c41f8cbd SS |
1745 | /** |
1746 | * zfcp_fsf_close_physical_port - close physical port | |
1747 | * @erp_action: pointer to struct zfcp_erp_action | |
1748 | * Returns: 0 on success | |
1da177e4 | 1749 | */ |
c41f8cbd | 1750 | int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1751 | { |
44cc76f2 | 1752 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1753 | struct zfcp_adapter *adapter = erp_action->adapter; |
1754 | struct zfcp_fsf_req *req; | |
1755 | int retval = -EIO; | |
1756 | ||
0406289e | 1757 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 1758 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 1759 | goto out; |
1da177e4 | 1760 | |
c41f8cbd SS |
1761 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PHYSICAL_PORT, |
1762 | ZFCP_REQ_AUTO_CLEANUP, | |
1763 | adapter->pool.fsf_req_erp); | |
025270f0 | 1764 | if (IS_ERR(req)) { |
c41f8cbd SS |
1765 | retval = PTR_ERR(req); |
1766 | goto out; | |
1767 | } | |
1da177e4 | 1768 | |
c41f8cbd SS |
1769 | sbale = zfcp_qdio_sbale_req(req); |
1770 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1771 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1772 | |
c41f8cbd SS |
1773 | req->data = erp_action->port; |
1774 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1775 | req->erp_action = erp_action; | |
1776 | req->handler = zfcp_fsf_close_physical_port_handler; | |
1777 | erp_action->fsf_req = req; | |
1778 | atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, | |
1779 | &erp_action->port->status); | |
1780 | ||
287ac01a | 1781 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1782 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1783 | if (retval) { |
c41f8cbd | 1784 | zfcp_fsf_req_free(req); |
1da177e4 | 1785 | erp_action->fsf_req = NULL; |
1da177e4 | 1786 | } |
c41f8cbd | 1787 | out: |
0406289e | 1788 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1789 | return retval; |
1790 | } | |
1791 | ||
c41f8cbd | 1792 | static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1793 | { |
c41f8cbd SS |
1794 | struct zfcp_adapter *adapter = req->adapter; |
1795 | struct zfcp_unit *unit = req->data; | |
1796 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1797 | struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support; | |
1798 | struct fsf_queue_designator *queue_designator = | |
1799 | &header->fsf_status_qual.fsf_queue_designator; | |
aef4a983 | 1800 | int exclusive, readwrite; |
1da177e4 | 1801 | |
c41f8cbd | 1802 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1803 | return; |
1da177e4 | 1804 | |
1da177e4 | 1805 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
b64ddf96 | 1806 | ZFCP_STATUS_COMMON_ACCESS_BOXED | |
1da177e4 LT |
1807 | ZFCP_STATUS_UNIT_SHARED | |
1808 | ZFCP_STATUS_UNIT_READONLY, | |
1809 | &unit->status); | |
1810 | ||
1da177e4 LT |
1811 | switch (header->fsf_status) { |
1812 | ||
1813 | case FSF_PORT_HANDLE_NOT_VALID: | |
c41f8cbd SS |
1814 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 109, req); |
1815 | /* fall through */ | |
1da177e4 | 1816 | case FSF_LUN_ALREADY_OPEN: |
1da177e4 | 1817 | break; |
1da177e4 | 1818 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1819 | zfcp_fsf_access_denied_unit(req, unit); |
1da177e4 | 1820 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
553448f6 | 1821 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); |
1da177e4 | 1822 | break; |
1da177e4 | 1823 | case FSF_PORT_BOXED: |
c41f8cbd SS |
1824 | zfcp_erp_port_boxed(unit->port, 51, req); |
1825 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
1826 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 1827 | break; |
1da177e4 | 1828 | case FSF_LUN_SHARING_VIOLATION: |
c41f8cbd | 1829 | if (header->fsf_status_qual.word[0]) |
553448f6 | 1830 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1831 | "LUN 0x%Lx on port 0x%Lx is already in " |
1832 | "use by CSS%d, MIF Image ID %x\n", | |
7ba58c9c SS |
1833 | (unsigned long long)unit->fcp_lun, |
1834 | (unsigned long long)unit->port->wwpn, | |
ff3b24fa CS |
1835 | queue_designator->cssid, |
1836 | queue_designator->hla); | |
c41f8cbd | 1837 | else |
553448f6 CS |
1838 | zfcp_act_eval_err(adapter, |
1839 | header->fsf_status_qual.word[2]); | |
c41f8cbd | 1840 | zfcp_erp_unit_access_denied(unit, 60, req); |
1da177e4 LT |
1841 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
1842 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); | |
c41f8cbd | 1843 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1844 | break; |
1da177e4 | 1845 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: |
c41f8cbd | 1846 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1847 | "No handle is available for LUN " |
1848 | "0x%016Lx on port 0x%016Lx\n", | |
7ba58c9c SS |
1849 | (unsigned long long)unit->fcp_lun, |
1850 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
1851 | zfcp_erp_unit_failed(unit, 34, req); |
1852 | /* fall through */ | |
1853 | case FSF_INVALID_COMMAND_OPTION: | |
1854 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1855 | break; |
1da177e4 | 1856 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1857 | switch (header->fsf_status_qual.word[0]) { |
1858 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
65a8d4e1 | 1859 | zfcp_test_link(unit->port); |
c41f8cbd | 1860 | /* fall through */ |
1da177e4 | 1861 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1862 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1863 | break; |
1da177e4 LT |
1864 | } |
1865 | break; | |
1866 | ||
1da177e4 | 1867 | case FSF_GOOD: |
1da177e4 | 1868 | unit->handle = header->lun_handle; |
1da177e4 | 1869 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
aef4a983 MS |
1870 | |
1871 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) && | |
1872 | (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) && | |
1873 | (adapter->ccw_device->id.dev_model != ZFCP_DEVICE_MODEL_PRIV)) { | |
1874 | exclusive = (bottom->lun_access_info & | |
1875 | FSF_UNIT_ACCESS_EXCLUSIVE); | |
1876 | readwrite = (bottom->lun_access_info & | |
1877 | FSF_UNIT_ACCESS_OUTBOUND_TRANSFER); | |
1878 | ||
1da177e4 LT |
1879 | if (!exclusive) |
1880 | atomic_set_mask(ZFCP_STATUS_UNIT_SHARED, | |
1881 | &unit->status); | |
1882 | ||
1883 | if (!readwrite) { | |
1884 | atomic_set_mask(ZFCP_STATUS_UNIT_READONLY, | |
1885 | &unit->status); | |
c41f8cbd | 1886 | dev_info(&adapter->ccw_device->dev, |
ff3b24fa CS |
1887 | "SCSI device at LUN 0x%016Lx on port " |
1888 | "0x%016Lx opened read-only\n", | |
7ba58c9c SS |
1889 | (unsigned long long)unit->fcp_lun, |
1890 | (unsigned long long)unit->port->wwpn); | |
1da177e4 LT |
1891 | } |
1892 | ||
1893 | if (exclusive && !readwrite) { | |
c41f8cbd | 1894 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
1895 | "Exclusive read-only access not " |
1896 | "supported (unit 0x%016Lx, " | |
1897 | "port 0x%016Lx)\n", | |
7ba58c9c SS |
1898 | (unsigned long long)unit->fcp_lun, |
1899 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
1900 | zfcp_erp_unit_failed(unit, 35, req); |
1901 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1902 | zfcp_erp_unit_shutdown(unit, 0, 80, req); | |
1da177e4 | 1903 | } else if (!exclusive && readwrite) { |
c41f8cbd | 1904 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
1905 | "Shared read-write access not " |
1906 | "supported (unit 0x%016Lx, port " | |
1907 | "0x%016Lx\n)", | |
7ba58c9c SS |
1908 | (unsigned long long)unit->fcp_lun, |
1909 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
1910 | zfcp_erp_unit_failed(unit, 36, req); |
1911 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1912 | zfcp_erp_unit_shutdown(unit, 0, 81, req); | |
1da177e4 LT |
1913 | } |
1914 | } | |
1da177e4 | 1915 | break; |
1da177e4 | 1916 | } |
1da177e4 LT |
1917 | } |
1918 | ||
c41f8cbd SS |
1919 | /** |
1920 | * zfcp_fsf_open_unit - open unit | |
1921 | * @erp_action: pointer to struct zfcp_erp_action | |
1922 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1923 | */ |
c41f8cbd | 1924 | int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) |
1da177e4 | 1925 | { |
44cc76f2 | 1926 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1927 | struct zfcp_adapter *adapter = erp_action->adapter; |
1928 | struct zfcp_fsf_req *req; | |
1929 | int retval = -EIO; | |
1930 | ||
0406289e | 1931 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 1932 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 1933 | goto out; |
1da177e4 | 1934 | |
c41f8cbd SS |
1935 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_OPEN_LUN, |
1936 | ZFCP_REQ_AUTO_CLEANUP, | |
1937 | adapter->pool.fsf_req_erp); | |
025270f0 | 1938 | if (IS_ERR(req)) { |
c41f8cbd SS |
1939 | retval = PTR_ERR(req); |
1940 | goto out; | |
1941 | } | |
1942 | ||
1943 | sbale = zfcp_qdio_sbale_req(req); | |
1da177e4 LT |
1944 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1945 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1946 | ||
c41f8cbd SS |
1947 | req->qtcb->header.port_handle = erp_action->port->handle; |
1948 | req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun; | |
1949 | req->handler = zfcp_fsf_open_unit_handler; | |
1950 | req->data = erp_action->unit; | |
1951 | req->erp_action = erp_action; | |
1952 | erp_action->fsf_req = req; | |
1953 | ||
1954 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) | |
1955 | req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING; | |
1956 | ||
287ac01a | 1957 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1958 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1959 | if (retval) { |
c41f8cbd | 1960 | zfcp_fsf_req_free(req); |
1da177e4 | 1961 | erp_action->fsf_req = NULL; |
1da177e4 | 1962 | } |
c41f8cbd | 1963 | out: |
0406289e | 1964 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1965 | return retval; |
1966 | } | |
1967 | ||
c41f8cbd | 1968 | static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1969 | { |
c41f8cbd | 1970 | struct zfcp_unit *unit = req->data; |
1da177e4 | 1971 | |
c41f8cbd | 1972 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1973 | return; |
1da177e4 | 1974 | |
c41f8cbd | 1975 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1976 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd SS |
1977 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 110, req); |
1978 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1979 | break; |
1da177e4 | 1980 | case FSF_LUN_HANDLE_NOT_VALID: |
c41f8cbd SS |
1981 | zfcp_erp_port_reopen(unit->port, 0, 111, req); |
1982 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1983 | break; |
1da177e4 | 1984 | case FSF_PORT_BOXED: |
c41f8cbd SS |
1985 | zfcp_erp_port_boxed(unit->port, 52, req); |
1986 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
1987 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 1988 | break; |
1da177e4 | 1989 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 1990 | switch (req->qtcb->header.fsf_status_qual.word[0]) { |
1da177e4 | 1991 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
65a8d4e1 | 1992 | zfcp_test_link(unit->port); |
c41f8cbd | 1993 | /* fall through */ |
1da177e4 | 1994 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1995 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1996 | break; |
1997 | } | |
1998 | break; | |
1da177e4 | 1999 | case FSF_GOOD: |
1da177e4 | 2000 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
1da177e4 | 2001 | break; |
1da177e4 | 2002 | } |
1da177e4 LT |
2003 | } |
2004 | ||
2005 | /** | |
c41f8cbd SS |
2006 | * zfcp_fsf_close_unit - close zfcp unit |
2007 | * @erp_action: pointer to struct zfcp_unit | |
2008 | * Returns: 0 on success, error otherwise | |
1da177e4 | 2009 | */ |
c41f8cbd | 2010 | int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) |
1da177e4 | 2011 | { |
44cc76f2 | 2012 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2013 | struct zfcp_adapter *adapter = erp_action->adapter; |
2014 | struct zfcp_fsf_req *req; | |
2015 | int retval = -EIO; | |
1da177e4 | 2016 | |
0406289e | 2017 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 2018 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 2019 | goto out; |
c41f8cbd SS |
2020 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_LUN, |
2021 | ZFCP_REQ_AUTO_CLEANUP, | |
2022 | adapter->pool.fsf_req_erp); | |
025270f0 | 2023 | if (IS_ERR(req)) { |
c41f8cbd SS |
2024 | retval = PTR_ERR(req); |
2025 | goto out; | |
2026 | } | |
1da177e4 | 2027 | |
c41f8cbd SS |
2028 | sbale = zfcp_qdio_sbale_req(req); |
2029 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1da177e4 LT |
2030 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; |
2031 | ||
c41f8cbd SS |
2032 | req->qtcb->header.port_handle = erp_action->port->handle; |
2033 | req->qtcb->header.lun_handle = erp_action->unit->handle; | |
2034 | req->handler = zfcp_fsf_close_unit_handler; | |
2035 | req->data = erp_action->unit; | |
2036 | req->erp_action = erp_action; | |
2037 | erp_action->fsf_req = req; | |
fdf23452 | 2038 | |
287ac01a | 2039 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
2040 | retval = zfcp_fsf_req_send(req); |
2041 | if (retval) { | |
2042 | zfcp_fsf_req_free(req); | |
2043 | erp_action->fsf_req = NULL; | |
2044 | } | |
2045 | out: | |
0406289e | 2046 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 2047 | return retval; |
1da177e4 LT |
2048 | } |
2049 | ||
c9615858 CS |
2050 | static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat) |
2051 | { | |
2052 | lat_rec->sum += lat; | |
c41f8cbd SS |
2053 | lat_rec->min = min(lat_rec->min, lat); |
2054 | lat_rec->max = max(lat_rec->max, lat); | |
c9615858 CS |
2055 | } |
2056 | ||
c41f8cbd | 2057 | static void zfcp_fsf_req_latency(struct zfcp_fsf_req *req) |
c9615858 CS |
2058 | { |
2059 | struct fsf_qual_latency_info *lat_inf; | |
2060 | struct latency_cont *lat; | |
c41f8cbd | 2061 | struct zfcp_unit *unit = req->unit; |
c9615858 CS |
2062 | unsigned long flags; |
2063 | ||
c41f8cbd | 2064 | lat_inf = &req->qtcb->prefix.prot_status_qual.latency_info; |
c9615858 | 2065 | |
c41f8cbd | 2066 | switch (req->qtcb->bottom.io.data_direction) { |
c9615858 CS |
2067 | case FSF_DATADIR_READ: |
2068 | lat = &unit->latencies.read; | |
2069 | break; | |
2070 | case FSF_DATADIR_WRITE: | |
2071 | lat = &unit->latencies.write; | |
2072 | break; | |
2073 | case FSF_DATADIR_CMND: | |
2074 | lat = &unit->latencies.cmd; | |
2075 | break; | |
2076 | default: | |
2077 | return; | |
2078 | } | |
2079 | ||
2080 | spin_lock_irqsave(&unit->latencies.lock, flags); | |
2081 | zfcp_fsf_update_lat(&lat->channel, lat_inf->channel_lat); | |
2082 | zfcp_fsf_update_lat(&lat->fabric, lat_inf->fabric_lat); | |
2083 | lat->counter++; | |
c41f8cbd | 2084 | spin_unlock_irqrestore(&unit->latencies.lock, flags); |
1da177e4 LT |
2085 | } |
2086 | ||
0997f1c5 SR |
2087 | #ifdef CONFIG_BLK_DEV_IO_TRACE |
2088 | static void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req) | |
2089 | { | |
2090 | struct fsf_qual_latency_info *lat_inf; | |
2091 | struct scsi_cmnd *scsi_cmnd = (struct scsi_cmnd *)fsf_req->data; | |
2092 | struct request *req = scsi_cmnd->request; | |
2093 | struct zfcp_blk_drv_data trace; | |
2094 | int ticks = fsf_req->adapter->timer_ticks; | |
2095 | ||
2096 | trace.flags = 0; | |
2097 | trace.magic = ZFCP_BLK_DRV_DATA_MAGIC; | |
2098 | if (fsf_req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) { | |
2099 | trace.flags |= ZFCP_BLK_LAT_VALID; | |
2100 | lat_inf = &fsf_req->qtcb->prefix.prot_status_qual.latency_info; | |
2101 | trace.channel_lat = lat_inf->channel_lat * ticks; | |
2102 | trace.fabric_lat = lat_inf->fabric_lat * ticks; | |
2103 | } | |
2104 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
2105 | trace.flags |= ZFCP_BLK_REQ_ERROR; | |
2106 | trace.inb_usage = fsf_req->qdio_inb_usage; | |
2107 | trace.outb_usage = fsf_req->qdio_outb_usage; | |
2108 | ||
2109 | blk_add_driver_data(req->q, req, &trace, sizeof(trace)); | |
2110 | } | |
2111 | #else | |
2112 | static inline void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req) | |
2113 | { | |
2114 | } | |
2115 | #endif | |
2116 | ||
c41f8cbd | 2117 | static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2118 | { |
c41f8cbd | 2119 | struct scsi_cmnd *scpnt = req->data; |
1da177e4 | 2120 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) |
c41f8cbd | 2121 | &(req->qtcb->bottom.io.fcp_rsp); |
1da177e4 | 2122 | u32 sns_len; |
f76af7d7 | 2123 | char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; |
1da177e4 | 2124 | unsigned long flags; |
1da177e4 | 2125 | |
553448f6 | 2126 | if (unlikely(!scpnt)) |
c41f8cbd | 2127 | return; |
553448f6 | 2128 | |
c41f8cbd SS |
2129 | read_lock_irqsave(&req->adapter->abort_lock, flags); |
2130 | ||
2131 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ABORTED)) { | |
feac6a07 MP |
2132 | set_host_byte(scpnt, DID_SOFT_ERROR); |
2133 | set_driver_byte(scpnt, SUGGEST_RETRY); | |
1da177e4 LT |
2134 | goto skip_fsfstatus; |
2135 | } | |
2136 | ||
c41f8cbd | 2137 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { |
feac6a07 | 2138 | set_host_byte(scpnt, DID_ERROR); |
1da177e4 LT |
2139 | goto skip_fsfstatus; |
2140 | } | |
2141 | ||
feac6a07 | 2142 | set_msg_byte(scpnt, COMMAND_COMPLETE); |
1da177e4 | 2143 | |
1da177e4 | 2144 | scpnt->result |= fcp_rsp_iu->scsi_status; |
1da177e4 | 2145 | |
c41f8cbd SS |
2146 | if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) |
2147 | zfcp_fsf_req_latency(req); | |
c9615858 | 2148 | |
0997f1c5 SR |
2149 | zfcp_fsf_trace_latency(req); |
2150 | ||
1da177e4 | 2151 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) { |
c41f8cbd | 2152 | if (fcp_rsp_info[3] == RSP_CODE_GOOD) |
feac6a07 | 2153 | set_host_byte(scpnt, DID_OK); |
c41f8cbd | 2154 | else { |
feac6a07 | 2155 | set_host_byte(scpnt, DID_ERROR); |
6f71d9bc | 2156 | goto skip_fsfstatus; |
1da177e4 LT |
2157 | } |
2158 | } | |
2159 | ||
1da177e4 | 2160 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_sns_len_valid)) { |
c41f8cbd SS |
2161 | sns_len = FSF_FCP_RSP_SIZE - sizeof(struct fcp_rsp_iu) + |
2162 | fcp_rsp_iu->fcp_rsp_len; | |
1da177e4 | 2163 | sns_len = min(sns_len, (u32) SCSI_SENSE_BUFFERSIZE); |
1da177e4 | 2164 | sns_len = min(sns_len, fcp_rsp_iu->fcp_sns_len); |
1da177e4 | 2165 | |
9d058ecf | 2166 | memcpy(scpnt->sense_buffer, |
1da177e4 | 2167 | zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len); |
1da177e4 LT |
2168 | } |
2169 | ||
1da177e4 | 2170 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_under)) { |
7936a892 FT |
2171 | scsi_set_resid(scpnt, fcp_rsp_iu->fcp_resid); |
2172 | if (scsi_bufflen(scpnt) - scsi_get_resid(scpnt) < | |
2173 | scpnt->underflow) | |
feac6a07 | 2174 | set_host_byte(scpnt, DID_ERROR); |
1da177e4 | 2175 | } |
c41f8cbd | 2176 | skip_fsfstatus: |
8a36e453 | 2177 | if (scpnt->result != 0) |
c41f8cbd | 2178 | zfcp_scsi_dbf_event_result("erro", 3, req->adapter, scpnt, req); |
8a36e453 | 2179 | else if (scpnt->retries > 0) |
c41f8cbd | 2180 | zfcp_scsi_dbf_event_result("retr", 4, req->adapter, scpnt, req); |
8a36e453 | 2181 | else |
c41f8cbd | 2182 | zfcp_scsi_dbf_event_result("norm", 6, req->adapter, scpnt, req); |
1da177e4 | 2183 | |
1da177e4 | 2184 | scpnt->host_scribble = NULL; |
1da177e4 | 2185 | (scpnt->scsi_done) (scpnt); |
1da177e4 LT |
2186 | /* |
2187 | * We must hold this lock until scsi_done has been called. | |
2188 | * Otherwise we may call scsi_done after abort regarding this | |
2189 | * command has completed. | |
2190 | * Note: scsi_done must not block! | |
2191 | */ | |
c41f8cbd | 2192 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); |
1da177e4 LT |
2193 | } |
2194 | ||
c41f8cbd | 2195 | static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2196 | { |
1da177e4 | 2197 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) |
c41f8cbd | 2198 | &(req->qtcb->bottom.io.fcp_rsp); |
f76af7d7 | 2199 | char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; |
1da177e4 | 2200 | |
c41f8cbd SS |
2201 | if ((fcp_rsp_info[3] != RSP_CODE_GOOD) || |
2202 | (req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
2203 | req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
2204 | } | |
2205 | ||
2206 | ||
2207 | static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req) | |
2208 | { | |
2209 | struct zfcp_unit *unit; | |
2210 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
2211 | ||
2212 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)) | |
2213 | unit = req->data; | |
2214 | else | |
2215 | unit = req->unit; | |
2216 | ||
2217 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
1da177e4 | 2218 | goto skip_fsfstatus; |
1da177e4 | 2219 | |
c41f8cbd SS |
2220 | switch (header->fsf_status) { |
2221 | case FSF_HANDLE_MISMATCH: | |
2222 | case FSF_PORT_HANDLE_NOT_VALID: | |
2223 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 112, req); | |
2224 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2225 | break; | |
2226 | case FSF_FCPLUN_NOT_VALID: | |
2227 | case FSF_LUN_HANDLE_NOT_VALID: | |
2228 | zfcp_erp_port_reopen(unit->port, 0, 113, req); | |
2229 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 2230 | break; |
c41f8cbd SS |
2231 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
2232 | zfcp_fsf_class_not_supp(req); | |
1da177e4 | 2233 | break; |
c41f8cbd SS |
2234 | case FSF_ACCESS_DENIED: |
2235 | zfcp_fsf_access_denied_unit(req, unit); | |
2236 | break; | |
2237 | case FSF_DIRECTION_INDICATOR_NOT_VALID: | |
2238 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
2239 | "Incorrect direction %d, unit 0x%016Lx on port " |
2240 | "0x%016Lx closed\n", | |
c41f8cbd | 2241 | req->qtcb->bottom.io.data_direction, |
7ba58c9c SS |
2242 | (unsigned long long)unit->fcp_lun, |
2243 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
2244 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 133, req); |
2245 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2246 | break; | |
2247 | case FSF_CMND_LENGTH_NOT_VALID: | |
2248 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
2249 | "Incorrect CDB length %d, unit 0x%016Lx on " |
2250 | "port 0x%016Lx closed\n", | |
c41f8cbd | 2251 | req->qtcb->bottom.io.fcp_cmnd_length, |
7ba58c9c SS |
2252 | (unsigned long long)unit->fcp_lun, |
2253 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
2254 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 134, req); |
2255 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2256 | break; | |
2257 | case FSF_PORT_BOXED: | |
2258 | zfcp_erp_port_boxed(unit->port, 53, req); | |
2259 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
2260 | ZFCP_STATUS_FSFREQ_RETRY; | |
2261 | break; | |
2262 | case FSF_LUN_BOXED: | |
2263 | zfcp_erp_unit_boxed(unit, 54, req); | |
2264 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
2265 | ZFCP_STATUS_FSFREQ_RETRY; | |
2266 | break; | |
2267 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
2268 | if (header->fsf_status_qual.word[0] == | |
2269 | FSF_SQ_INVOKE_LINK_TEST_PROCEDURE) | |
2270 | zfcp_test_link(unit->port); | |
2271 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 2272 | break; |
1da177e4 | 2273 | } |
c41f8cbd SS |
2274 | skip_fsfstatus: |
2275 | if (req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT) | |
2276 | zfcp_fsf_send_fcp_ctm_handler(req); | |
2277 | else { | |
2278 | zfcp_fsf_send_fcp_command_task_handler(req); | |
2279 | req->unit = NULL; | |
2280 | zfcp_unit_put(unit); | |
2281 | } | |
1da177e4 LT |
2282 | } |
2283 | ||
7ba58c9c SS |
2284 | static void zfcp_set_fcp_dl(struct fcp_cmnd_iu *fcp_cmd, u32 fcp_dl) |
2285 | { | |
2286 | u32 *fcp_dl_ptr; | |
2287 | ||
2288 | /* | |
2289 | * fcp_dl_addr = start address of fcp_cmnd structure + | |
2290 | * size of fixed part + size of dynamically sized add_dcp_cdb field | |
2291 | * SEE FCP-2 documentation | |
2292 | */ | |
2293 | fcp_dl_ptr = (u32 *) ((unsigned char *) &fcp_cmd[1] + | |
2294 | (fcp_cmd->add_fcp_cdb_length << 2)); | |
2295 | *fcp_dl_ptr = fcp_dl; | |
2296 | } | |
2297 | ||
c41f8cbd SS |
2298 | /** |
2299 | * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command) | |
2300 | * @adapter: adapter where scsi command is issued | |
2301 | * @unit: unit where command is sent to | |
2302 | * @scsi_cmnd: scsi command to be sent | |
2303 | * @timer: timer to be started when request is initiated | |
2304 | * @req_flags: flags for fsf_request | |
1da177e4 | 2305 | */ |
c41f8cbd SS |
2306 | int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter, |
2307 | struct zfcp_unit *unit, | |
2308 | struct scsi_cmnd *scsi_cmnd, | |
2309 | int use_timer, int req_flags) | |
1da177e4 | 2310 | { |
c41f8cbd SS |
2311 | struct zfcp_fsf_req *req; |
2312 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
2313 | unsigned int sbtype; | |
2314 | int real_bytes, retval = -EIO; | |
1da177e4 | 2315 | |
c41f8cbd SS |
2316 | if (unlikely(!(atomic_read(&unit->status) & |
2317 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2318 | return -EBUSY; | |
1da177e4 | 2319 | |
0406289e | 2320 | spin_lock(&adapter->req_q_lock); |
2450d3e7 | 2321 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd SS |
2322 | goto out; |
2323 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, | |
2324 | adapter->pool.fsf_req_scsi); | |
025270f0 | 2325 | if (IS_ERR(req)) { |
c41f8cbd SS |
2326 | retval = PTR_ERR(req); |
2327 | goto out; | |
2328 | } | |
2329 | ||
2330 | zfcp_unit_get(unit); | |
2331 | req->unit = unit; | |
2332 | req->data = scsi_cmnd; | |
2333 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2334 | req->qtcb->header.lun_handle = unit->handle; | |
2335 | req->qtcb->header.port_handle = unit->port->handle; | |
2336 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
2337 | ||
2338 | scsi_cmnd->host_scribble = (unsigned char *) req->req_id; | |
2339 | ||
2340 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) &(req->qtcb->bottom.io.fcp_cmnd); | |
2341 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
2342 | /* | |
2343 | * set depending on data direction: | |
2344 | * data direction bits in SBALE (SB Type) | |
2345 | * data direction bits in QTCB | |
2346 | * data direction bits in FCP_CMND IU | |
2347 | */ | |
2348 | switch (scsi_cmnd->sc_data_direction) { | |
2349 | case DMA_NONE: | |
2350 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
2351 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
1da177e4 | 2352 | break; |
c41f8cbd SS |
2353 | case DMA_FROM_DEVICE: |
2354 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ; | |
2355 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
2356 | fcp_cmnd_iu->rddata = 1; | |
2357 | break; | |
2358 | case DMA_TO_DEVICE: | |
2359 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE; | |
2360 | sbtype = SBAL_FLAGS0_TYPE_WRITE; | |
2361 | fcp_cmnd_iu->wddata = 1; | |
1da177e4 | 2362 | break; |
c41f8cbd | 2363 | case DMA_BIDIRECTIONAL: |
1da177e4 | 2364 | default: |
c41f8cbd SS |
2365 | retval = -EIO; |
2366 | goto failed_scsi_cmnd; | |
1da177e4 LT |
2367 | } |
2368 | ||
c41f8cbd SS |
2369 | if (likely((scsi_cmnd->device->simple_tags) || |
2370 | ((atomic_read(&unit->status) & ZFCP_STATUS_UNIT_READONLY) && | |
2371 | (atomic_read(&unit->status) & ZFCP_STATUS_UNIT_SHARED)))) | |
2372 | fcp_cmnd_iu->task_attribute = SIMPLE_Q; | |
2373 | else | |
2374 | fcp_cmnd_iu->task_attribute = UNTAGGED; | |
1da177e4 | 2375 | |
c41f8cbd SS |
2376 | if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH)) |
2377 | fcp_cmnd_iu->add_fcp_cdb_length = | |
2378 | (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2; | |
1da177e4 | 2379 | |
c41f8cbd | 2380 | memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); |
45633fdc | 2381 | |
c41f8cbd | 2382 | req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + |
7ba58c9c | 2383 | fcp_cmnd_iu->add_fcp_cdb_length + sizeof(u32); |
1da177e4 | 2384 | |
c41f8cbd SS |
2385 | real_bytes = zfcp_qdio_sbals_from_sg(req, sbtype, |
2386 | scsi_sglist(scsi_cmnd), | |
2387 | FSF_MAX_SBALS_PER_REQ); | |
2388 | if (unlikely(real_bytes < 0)) { | |
2389 | if (req->sbal_number < FSF_MAX_SBALS_PER_REQ) | |
2390 | retval = -EIO; | |
2391 | else { | |
2392 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
2393 | "Oversize data package, unit 0x%016Lx " |
2394 | "on port 0x%016Lx closed\n", | |
7ba58c9c SS |
2395 | (unsigned long long)unit->fcp_lun, |
2396 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
2397 | zfcp_erp_unit_shutdown(unit, 0, 131, req); |
2398 | retval = -EINVAL; | |
2399 | } | |
2400 | goto failed_scsi_cmnd; | |
1da177e4 | 2401 | } |
1da177e4 | 2402 | |
c41f8cbd | 2403 | zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes); |
1da177e4 | 2404 | |
c41f8cbd SS |
2405 | if (use_timer) |
2406 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1da177e4 | 2407 | |
c41f8cbd SS |
2408 | retval = zfcp_fsf_req_send(req); |
2409 | if (unlikely(retval)) | |
2410 | goto failed_scsi_cmnd; | |
1da177e4 | 2411 | |
c41f8cbd | 2412 | goto out; |
1da177e4 | 2413 | |
c41f8cbd SS |
2414 | failed_scsi_cmnd: |
2415 | zfcp_unit_put(unit); | |
2416 | zfcp_fsf_req_free(req); | |
2417 | scsi_cmnd->host_scribble = NULL; | |
2418 | out: | |
0406289e | 2419 | spin_unlock(&adapter->req_q_lock); |
c41f8cbd | 2420 | return retval; |
1da177e4 LT |
2421 | } |
2422 | ||
2423 | /** | |
c41f8cbd SS |
2424 | * zfcp_fsf_send_fcp_ctm - send SCSI task management command |
2425 | * @adapter: pointer to struct zfcp-adapter | |
2426 | * @unit: pointer to struct zfcp_unit | |
2427 | * @tm_flags: unsigned byte for task management flags | |
2428 | * @req_flags: int request flags | |
2429 | * Returns: on success pointer to struct fsf_req, NULL otherwise | |
1da177e4 | 2430 | */ |
c41f8cbd SS |
2431 | struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_adapter *adapter, |
2432 | struct zfcp_unit *unit, | |
2433 | u8 tm_flags, int req_flags) | |
1da177e4 | 2434 | { |
44cc76f2 | 2435 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2436 | struct zfcp_fsf_req *req = NULL; |
2437 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
1da177e4 | 2438 | |
c41f8cbd SS |
2439 | if (unlikely(!(atomic_read(&unit->status) & |
2440 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2441 | return NULL; | |
1da177e4 | 2442 | |
0406289e | 2443 | spin_lock(&adapter->req_q_lock); |
2450d3e7 | 2444 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd SS |
2445 | goto out; |
2446 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, | |
2447 | adapter->pool.fsf_req_scsi); | |
025270f0 | 2448 | if (IS_ERR(req)) |
c41f8cbd | 2449 | goto out; |
1da177e4 | 2450 | |
c41f8cbd SS |
2451 | req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT; |
2452 | req->data = unit; | |
2453 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2454 | req->qtcb->header.lun_handle = unit->handle; | |
2455 | req->qtcb->header.port_handle = unit->port->handle; | |
2456 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
2457 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
2458 | req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + | |
7ba58c9c | 2459 | sizeof(u32); |
c41f8cbd SS |
2460 | |
2461 | sbale = zfcp_qdio_sbale_req(req); | |
2462 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE; | |
2463 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 2464 | |
c41f8cbd SS |
2465 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) &req->qtcb->bottom.io.fcp_cmnd; |
2466 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
2467 | fcp_cmnd_iu->task_management_flags = tm_flags; | |
1da177e4 | 2468 | |
c41f8cbd SS |
2469 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); |
2470 | if (!zfcp_fsf_req_send(req)) | |
2471 | goto out; | |
1da177e4 | 2472 | |
c41f8cbd SS |
2473 | zfcp_fsf_req_free(req); |
2474 | req = NULL; | |
2475 | out: | |
0406289e | 2476 | spin_unlock(&adapter->req_q_lock); |
c41f8cbd SS |
2477 | return req; |
2478 | } | |
1da177e4 | 2479 | |
c41f8cbd SS |
2480 | static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req) |
2481 | { | |
2482 | if (req->qtcb->header.fsf_status != FSF_GOOD) | |
2483 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
2484 | } |
2485 | ||
c41f8cbd SS |
2486 | /** |
2487 | * zfcp_fsf_control_file - control file upload/download | |
2488 | * @adapter: pointer to struct zfcp_adapter | |
2489 | * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc | |
2490 | * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise | |
1da177e4 | 2491 | */ |
c41f8cbd SS |
2492 | struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, |
2493 | struct zfcp_fsf_cfdc *fsf_cfdc) | |
1da177e4 | 2494 | { |
44cc76f2 | 2495 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2496 | struct zfcp_fsf_req *req = NULL; |
2497 | struct fsf_qtcb_bottom_support *bottom; | |
2498 | int direction, retval = -EIO, bytes; | |
2499 | ||
2500 | if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) | |
2501 | return ERR_PTR(-EOPNOTSUPP); | |
2502 | ||
2503 | switch (fsf_cfdc->command) { | |
2504 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
2505 | direction = SBAL_FLAGS0_TYPE_WRITE; | |
2506 | break; | |
2507 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
2508 | direction = SBAL_FLAGS0_TYPE_READ; | |
2509 | break; | |
2510 | default: | |
2511 | return ERR_PTR(-EINVAL); | |
2512 | } | |
1da177e4 | 2513 | |
0406289e | 2514 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
2515 | if (zfcp_fsf_req_sbal_get(adapter)) |
2516 | goto out; | |
1da177e4 | 2517 | |
c41f8cbd | 2518 | req = zfcp_fsf_req_create(adapter, fsf_cfdc->command, 0, NULL); |
025270f0 | 2519 | if (IS_ERR(req)) { |
c41f8cbd SS |
2520 | retval = -EPERM; |
2521 | goto out; | |
2522 | } | |
1da177e4 | 2523 | |
c41f8cbd | 2524 | req->handler = zfcp_fsf_control_file_handler; |
1da177e4 | 2525 | |
c41f8cbd SS |
2526 | sbale = zfcp_qdio_sbale_req(req); |
2527 | sbale[0].flags |= direction; | |
8a36e453 | 2528 | |
c41f8cbd SS |
2529 | bottom = &req->qtcb->bottom.support; |
2530 | bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE; | |
2531 | bottom->option = fsf_cfdc->option; | |
8a36e453 | 2532 | |
c41f8cbd SS |
2533 | bytes = zfcp_qdio_sbals_from_sg(req, direction, fsf_cfdc->sg, |
2534 | FSF_MAX_SBALS_PER_REQ); | |
2535 | if (bytes != ZFCP_CFDC_MAX_SIZE) { | |
2536 | retval = -ENOMEM; | |
2537 | zfcp_fsf_req_free(req); | |
2538 | goto out; | |
2539 | } | |
1da177e4 | 2540 | |
c41f8cbd SS |
2541 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
2542 | retval = zfcp_fsf_req_send(req); | |
2543 | out: | |
0406289e | 2544 | spin_unlock_bh(&adapter->req_q_lock); |
8a36e453 | 2545 | |
c41f8cbd SS |
2546 | if (!retval) { |
2547 | wait_event(req->completion_wq, | |
2548 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
2549 | return req; | |
1da177e4 | 2550 | } |
c41f8cbd | 2551 | return ERR_PTR(retval); |
1da177e4 | 2552 | } |