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 | ||
ecf39d42 CS |
9 | #define KMSG_COMPONENT "zfcp" |
10 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt | |
11 | ||
0997f1c5 | 12 | #include <linux/blktrace_api.h> |
1da177e4 LT |
13 | #include "zfcp_ext.h" |
14 | ||
287ac01a CS |
15 | static void zfcp_fsf_request_timeout_handler(unsigned long data) |
16 | { | |
17 | struct zfcp_adapter *adapter = (struct zfcp_adapter *) data; | |
18 | zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, 62, | |
19 | NULL); | |
20 | } | |
21 | ||
22 | static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req, | |
23 | unsigned long timeout) | |
24 | { | |
25 | fsf_req->timer.function = zfcp_fsf_request_timeout_handler; | |
26 | fsf_req->timer.data = (unsigned long) fsf_req->adapter; | |
27 | fsf_req->timer.expires = jiffies + timeout; | |
28 | add_timer(&fsf_req->timer); | |
29 | } | |
30 | ||
31 | static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req) | |
32 | { | |
33 | BUG_ON(!fsf_req->erp_action); | |
34 | fsf_req->timer.function = zfcp_erp_timeout_handler; | |
35 | fsf_req->timer.data = (unsigned long) fsf_req->erp_action; | |
36 | fsf_req->timer.expires = jiffies + 30 * HZ; | |
37 | add_timer(&fsf_req->timer); | |
38 | } | |
39 | ||
1da177e4 LT |
40 | /* association between FSF command and FSF QTCB type */ |
41 | static u32 fsf_qtcb_type[] = { | |
42 | [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND, | |
43 | [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND, | |
44 | [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND, | |
45 | [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND, | |
46 | [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND, | |
47 | [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND, | |
48 | [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND, | |
49 | [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND, | |
50 | [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND, | |
51 | [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND, | |
52 | [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND, | |
53 | [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND, | |
54 | [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND | |
55 | }; | |
56 | ||
553448f6 CS |
57 | static void zfcp_act_eval_err(struct zfcp_adapter *adapter, u32 table) |
58 | { | |
c41f8cbd | 59 | u16 subtable = table >> 16; |
553448f6 | 60 | u16 rule = table & 0xffff; |
ff3b24fa | 61 | const char *act_type[] = { "unknown", "OS", "WWPN", "DID", "LUN" }; |
553448f6 | 62 | |
ff3b24fa | 63 | if (subtable && subtable < ARRAY_SIZE(act_type)) |
553448f6 | 64 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
65 | "Access denied according to ACT rule type %s, " |
66 | "rule %d\n", act_type[subtable], rule); | |
553448f6 CS |
67 | } |
68 | ||
69 | static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req, | |
70 | struct zfcp_port *port) | |
71 | { | |
72 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
73 | dev_warn(&req->adapter->ccw_device->dev, | |
ff3b24fa | 74 | "Access denied to port 0x%016Lx\n", |
7ba58c9c | 75 | (unsigned long long)port->wwpn); |
553448f6 CS |
76 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); |
77 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); | |
78 | zfcp_erp_port_access_denied(port, 55, req); | |
79 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
80 | } | |
81 | ||
82 | static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req *req, | |
83 | struct zfcp_unit *unit) | |
84 | { | |
85 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
86 | dev_warn(&req->adapter->ccw_device->dev, | |
ff3b24fa | 87 | "Access denied to unit 0x%016Lx on port 0x%016Lx\n", |
7ba58c9c SS |
88 | (unsigned long long)unit->fcp_lun, |
89 | (unsigned long long)unit->port->wwpn); | |
553448f6 CS |
90 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); |
91 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); | |
92 | zfcp_erp_unit_access_denied(unit, 59, req); | |
93 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
94 | } | |
95 | ||
96 | static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req) | |
97 | { | |
ff3b24fa CS |
98 | dev_err(&req->adapter->ccw_device->dev, "FCP device not " |
99 | "operational because of an unsupported FC class\n"); | |
553448f6 CS |
100 | zfcp_erp_adapter_shutdown(req->adapter, 0, 123, req); |
101 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
102 | } | |
103 | ||
c41f8cbd SS |
104 | /** |
105 | * zfcp_fsf_req_free - free memory used by fsf request | |
106 | * @fsf_req: pointer to struct zfcp_fsf_req | |
1da177e4 | 107 | */ |
c41f8cbd | 108 | void zfcp_fsf_req_free(struct zfcp_fsf_req *req) |
1da177e4 | 109 | { |
c41f8cbd SS |
110 | if (likely(req->pool)) { |
111 | mempool_free(req, req->pool); | |
dd52e0ea HC |
112 | return; |
113 | } | |
114 | ||
c41f8cbd SS |
115 | if (req->qtcb) { |
116 | kmem_cache_free(zfcp_data.fsf_req_qtcb_cache, req); | |
dd52e0ea HC |
117 | return; |
118 | } | |
1da177e4 LT |
119 | } |
120 | ||
c41f8cbd SS |
121 | /** |
122 | * zfcp_fsf_req_dismiss_all - dismiss all fsf requests | |
123 | * @adapter: pointer to struct zfcp_adapter | |
124 | * | |
869b2b44 MP |
125 | * Never ever call this without shutting down the adapter first. |
126 | * Otherwise the adapter would continue using and corrupting s390 storage. | |
127 | * Included BUG_ON() call to ensure this is done. | |
128 | * ERP is supposed to be the only user of this function. | |
1da177e4 | 129 | */ |
6fcc4711 | 130 | void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter) |
1da177e4 | 131 | { |
c41f8cbd | 132 | struct zfcp_fsf_req *req, *tmp; |
fea9d6c7 | 133 | unsigned long flags; |
6fcc4711 | 134 | LIST_HEAD(remove_queue); |
869b2b44 | 135 | unsigned int i; |
fea9d6c7 | 136 | |
c41f8cbd | 137 | BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP); |
fea9d6c7 | 138 | spin_lock_irqsave(&adapter->req_list_lock, flags); |
869b2b44 | 139 | for (i = 0; i < REQUEST_LIST_SIZE; i++) |
6fcc4711 | 140 | list_splice_init(&adapter->req_list[i], &remove_queue); |
fea9d6c7 VS |
141 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); |
142 | ||
c41f8cbd SS |
143 | list_for_each_entry_safe(req, tmp, &remove_queue, list) { |
144 | list_del(&req->list); | |
145 | req->status |= ZFCP_STATUS_FSFREQ_DISMISSED; | |
146 | zfcp_fsf_req_complete(req); | |
1da177e4 | 147 | } |
1da177e4 LT |
148 | } |
149 | ||
c41f8cbd | 150 | static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req) |
1da177e4 | 151 | { |
c41f8cbd SS |
152 | struct fsf_status_read_buffer *sr_buf = req->data; |
153 | struct zfcp_adapter *adapter = req->adapter; | |
154 | struct zfcp_port *port; | |
155 | int d_id = sr_buf->d_id & ZFCP_DID_MASK; | |
156 | unsigned long flags; | |
1da177e4 | 157 | |
c41f8cbd SS |
158 | read_lock_irqsave(&zfcp_data.config_lock, flags); |
159 | list_for_each_entry(port, &adapter->port_list_head, list) | |
160 | if (port->d_id == d_id) { | |
161 | read_unlock_irqrestore(&zfcp_data.config_lock, flags); | |
162 | switch (sr_buf->status_subtype) { | |
163 | case FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT: | |
164 | zfcp_erp_port_reopen(port, 0, 101, req); | |
165 | break; | |
166 | case FSF_STATUS_READ_SUB_ERROR_PORT: | |
167 | zfcp_erp_port_shutdown(port, 0, 122, req); | |
168 | break; | |
169 | } | |
170 | return; | |
171 | } | |
172 | read_unlock_irqrestore(&zfcp_data.config_lock, flags); | |
1da177e4 LT |
173 | } |
174 | ||
c41f8cbd SS |
175 | static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, u8 id, |
176 | struct fsf_link_down_info *link_down) | |
aef4a983 | 177 | { |
c41f8cbd | 178 | struct zfcp_adapter *adapter = req->adapter; |
698ec016 | 179 | |
c41f8cbd | 180 | if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED) |
ee69ab7a MS |
181 | return; |
182 | ||
183 | atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status); | |
184 | ||
c41f8cbd | 185 | if (!link_down) |
2f8f3ed5 | 186 | goto out; |
ee69ab7a | 187 | |
aef4a983 MS |
188 | switch (link_down->error_code) { |
189 | case FSF_PSQ_LINK_NO_LIGHT: | |
c41f8cbd | 190 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
191 | "There is no light signal from the local " |
192 | "fibre channel cable\n"); | |
aef4a983 MS |
193 | break; |
194 | case FSF_PSQ_LINK_WRAP_PLUG: | |
c41f8cbd | 195 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
196 | "There is a wrap plug instead of a fibre " |
197 | "channel cable\n"); | |
aef4a983 MS |
198 | break; |
199 | case FSF_PSQ_LINK_NO_FCP: | |
c41f8cbd | 200 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
201 | "The adjacent fibre channel node does not " |
202 | "support FCP\n"); | |
aef4a983 MS |
203 | break; |
204 | case FSF_PSQ_LINK_FIRMWARE_UPDATE: | |
c41f8cbd | 205 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
206 | "The FCP device is suspended because of a " |
207 | "firmware update\n"); | |
553448f6 | 208 | break; |
aef4a983 | 209 | case FSF_PSQ_LINK_INVALID_WWPN: |
c41f8cbd | 210 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
211 | "The FCP device detected a WWPN that is " |
212 | "duplicate or not valid\n"); | |
aef4a983 MS |
213 | break; |
214 | case FSF_PSQ_LINK_NO_NPIV_SUPPORT: | |
c41f8cbd | 215 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 216 | "The fibre channel fabric does not support NPIV\n"); |
aef4a983 MS |
217 | break; |
218 | case FSF_PSQ_LINK_NO_FCP_RESOURCES: | |
c41f8cbd | 219 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 220 | "The FCP adapter cannot support more NPIV ports\n"); |
aef4a983 MS |
221 | break; |
222 | case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: | |
c41f8cbd | 223 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
224 | "The adjacent switch cannot support " |
225 | "more NPIV ports\n"); | |
aef4a983 MS |
226 | break; |
227 | case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: | |
c41f8cbd | 228 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
229 | "The FCP adapter could not log in to the " |
230 | "fibre channel fabric\n"); | |
aef4a983 MS |
231 | break; |
232 | case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: | |
c41f8cbd | 233 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
234 | "The WWPN assignment file on the FCP adapter " |
235 | "has been damaged\n"); | |
aef4a983 MS |
236 | break; |
237 | case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: | |
c41f8cbd | 238 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
239 | "The mode table on the FCP adapter " |
240 | "has been damaged\n"); | |
aef4a983 MS |
241 | break; |
242 | case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: | |
c41f8cbd | 243 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
244 | "All NPIV ports on the FCP adapter have " |
245 | "been assigned\n"); | |
aef4a983 MS |
246 | break; |
247 | default: | |
c41f8cbd | 248 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
249 | "The link between the FCP adapter and " |
250 | "the FC fabric is down\n"); | |
aef4a983 | 251 | } |
c41f8cbd SS |
252 | out: |
253 | zfcp_erp_adapter_failed(adapter, id, req); | |
aef4a983 MS |
254 | } |
255 | ||
c41f8cbd | 256 | static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req) |
1da177e4 | 257 | { |
c41f8cbd SS |
258 | struct fsf_status_read_buffer *sr_buf = req->data; |
259 | struct fsf_link_down_info *ldi = | |
260 | (struct fsf_link_down_info *) &sr_buf->payload; | |
1da177e4 | 261 | |
c41f8cbd SS |
262 | switch (sr_buf->status_subtype) { |
263 | case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: | |
c41f8cbd | 264 | zfcp_fsf_link_down_info_eval(req, 38, ldi); |
1da177e4 | 265 | break; |
c41f8cbd | 266 | case FSF_STATUS_READ_SUB_FDISC_FAILED: |
c41f8cbd | 267 | zfcp_fsf_link_down_info_eval(req, 39, ldi); |
1da177e4 | 268 | break; |
c41f8cbd | 269 | case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE: |
c41f8cbd SS |
270 | zfcp_fsf_link_down_info_eval(req, 40, NULL); |
271 | }; | |
272 | } | |
1da177e4 | 273 | |
c41f8cbd SS |
274 | static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) |
275 | { | |
276 | struct zfcp_adapter *adapter = req->adapter; | |
277 | struct fsf_status_read_buffer *sr_buf = req->data; | |
1da177e4 | 278 | |
c41f8cbd SS |
279 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
280 | zfcp_hba_dbf_event_fsf_unsol("dism", adapter, sr_buf); | |
281 | mempool_free(sr_buf, adapter->pool.data_status_read); | |
282 | zfcp_fsf_req_free(req); | |
283 | return; | |
284 | } | |
1da177e4 | 285 | |
c41f8cbd | 286 | zfcp_hba_dbf_event_fsf_unsol("read", adapter, sr_buf); |
1da177e4 | 287 | |
c41f8cbd SS |
288 | switch (sr_buf->status_type) { |
289 | case FSF_STATUS_READ_PORT_CLOSED: | |
290 | zfcp_fsf_status_read_port_closed(req); | |
1da177e4 | 291 | break; |
c41f8cbd SS |
292 | case FSF_STATUS_READ_INCOMING_ELS: |
293 | zfcp_fc_incoming_els(req); | |
1da177e4 | 294 | break; |
c41f8cbd | 295 | case FSF_STATUS_READ_SENSE_DATA_AVAIL: |
1da177e4 | 296 | break; |
c41f8cbd | 297 | case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: |
ff3b24fa CS |
298 | dev_warn(&adapter->ccw_device->dev, |
299 | "The error threshold for checksum statistics " | |
300 | "has been exceeded\n"); | |
57069386 | 301 | zfcp_hba_dbf_event_berr(adapter, req); |
1da177e4 | 302 | break; |
c41f8cbd SS |
303 | case FSF_STATUS_READ_LINK_DOWN: |
304 | zfcp_fsf_status_read_link_down(req); | |
305 | break; | |
306 | case FSF_STATUS_READ_LINK_UP: | |
307 | dev_info(&adapter->ccw_device->dev, | |
ff3b24fa | 308 | "The local link has been restored\n"); |
c41f8cbd SS |
309 | /* All ports should be marked as ready to run again */ |
310 | zfcp_erp_modify_adapter_status(adapter, 30, NULL, | |
311 | ZFCP_STATUS_COMMON_RUNNING, | |
312 | ZFCP_SET); | |
313 | zfcp_erp_adapter_reopen(adapter, | |
314 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
315 | ZFCP_STATUS_COMMON_ERP_FAILED, | |
316 | 102, req); | |
317 | break; | |
318 | case FSF_STATUS_READ_NOTIFICATION_LOST: | |
319 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED) | |
320 | zfcp_erp_adapter_access_changed(adapter, 135, req); | |
321 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS) | |
322 | schedule_work(&adapter->scan_work); | |
323 | break; | |
324 | case FSF_STATUS_READ_CFDC_UPDATED: | |
325 | zfcp_erp_adapter_access_changed(adapter, 136, req); | |
326 | break; | |
327 | case FSF_STATUS_READ_FEATURE_UPDATE_ALERT: | |
328 | adapter->adapter_features = sr_buf->payload.word[0]; | |
1da177e4 | 329 | break; |
1da177e4 LT |
330 | } |
331 | ||
c41f8cbd SS |
332 | mempool_free(sr_buf, adapter->pool.data_status_read); |
333 | zfcp_fsf_req_free(req); | |
1da177e4 | 334 | |
c41f8cbd | 335 | atomic_inc(&adapter->stat_miss); |
b7f15f3c | 336 | queue_work(zfcp_data.work_queue, &adapter->stat_work); |
c41f8cbd | 337 | } |
1da177e4 | 338 | |
c41f8cbd SS |
339 | static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req) |
340 | { | |
341 | switch (req->qtcb->header.fsf_status_qual.word[0]) { | |
342 | case FSF_SQ_FCP_RSP_AVAILABLE: | |
343 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
344 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
345 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
346 | return; | |
347 | case FSF_SQ_COMMAND_ABORTED: | |
348 | req->status |= ZFCP_STATUS_FSFREQ_ABORTED; | |
349 | break; | |
350 | case FSF_SQ_NO_RECOM: | |
351 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
352 | "The FCP adapter reported a problem " |
353 | "that cannot be recovered\n"); | |
c41f8cbd SS |
354 | zfcp_erp_adapter_shutdown(req->adapter, 0, 121, req); |
355 | break; | |
356 | } | |
357 | /* all non-return stats set FSFREQ_ERROR*/ | |
358 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
359 | } |
360 | ||
c41f8cbd | 361 | static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req) |
1da177e4 | 362 | { |
c41f8cbd SS |
363 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
364 | return; | |
1da177e4 | 365 | |
c41f8cbd SS |
366 | switch (req->qtcb->header.fsf_status) { |
367 | case FSF_UNKNOWN_COMMAND: | |
368 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa | 369 | "The FCP adapter does not recognize the command 0x%x\n", |
c41f8cbd SS |
370 | req->qtcb->header.fsf_command); |
371 | zfcp_erp_adapter_shutdown(req->adapter, 0, 120, req); | |
372 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
373 | break; | |
374 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
375 | zfcp_fsf_fsfstatus_qual_eval(req); | |
376 | break; | |
377 | } | |
378 | } | |
1da177e4 | 379 | |
c41f8cbd SS |
380 | static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) |
381 | { | |
382 | struct zfcp_adapter *adapter = req->adapter; | |
383 | struct fsf_qtcb *qtcb = req->qtcb; | |
384 | union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual; | |
1da177e4 | 385 | |
c41f8cbd | 386 | zfcp_hba_dbf_event_fsf_response(req); |
1da177e4 | 387 | |
c41f8cbd SS |
388 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
389 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
390 | ZFCP_STATUS_FSFREQ_RETRY; /* only for SCSI cmnds. */ | |
391 | return; | |
392 | } | |
1da177e4 | 393 | |
c41f8cbd SS |
394 | switch (qtcb->prefix.prot_status) { |
395 | case FSF_PROT_GOOD: | |
396 | case FSF_PROT_FSF_STATUS_PRESENTED: | |
397 | return; | |
398 | case FSF_PROT_QTCB_VERSION_ERROR: | |
399 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
400 | "QTCB version 0x%x not supported by FCP adapter " |
401 | "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION, | |
402 | psq->word[0], psq->word[1]); | |
c41f8cbd SS |
403 | zfcp_erp_adapter_shutdown(adapter, 0, 117, req); |
404 | break; | |
405 | case FSF_PROT_ERROR_STATE: | |
406 | case FSF_PROT_SEQ_NUMB_ERROR: | |
407 | zfcp_erp_adapter_reopen(adapter, 0, 98, req); | |
408 | req->status |= ZFCP_STATUS_FSFREQ_RETRY; | |
409 | break; | |
410 | case FSF_PROT_UNSUPP_QTCB_TYPE: | |
411 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 412 | "The QTCB type is not supported by the FCP adapter\n"); |
c41f8cbd SS |
413 | zfcp_erp_adapter_shutdown(adapter, 0, 118, req); |
414 | break; | |
415 | case FSF_PROT_HOST_CONNECTION_INITIALIZING: | |
416 | atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT, | |
417 | &adapter->status); | |
418 | break; | |
419 | case FSF_PROT_DUPLICATE_REQUEST_ID: | |
420 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 421 | "0x%Lx is an ambiguous request identifier\n", |
c41f8cbd SS |
422 | (unsigned long long)qtcb->bottom.support.req_handle); |
423 | zfcp_erp_adapter_shutdown(adapter, 0, 78, req); | |
424 | break; | |
425 | case FSF_PROT_LINK_DOWN: | |
426 | zfcp_fsf_link_down_info_eval(req, 37, &psq->link_down_info); | |
427 | /* FIXME: reopening adapter now? better wait for link up */ | |
428 | zfcp_erp_adapter_reopen(adapter, 0, 79, req); | |
429 | break; | |
430 | case FSF_PROT_REEST_QUEUE: | |
431 | /* All ports should be marked as ready to run again */ | |
432 | zfcp_erp_modify_adapter_status(adapter, 28, NULL, | |
433 | ZFCP_STATUS_COMMON_RUNNING, | |
434 | ZFCP_SET); | |
435 | zfcp_erp_adapter_reopen(adapter, | |
436 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
437 | ZFCP_STATUS_COMMON_ERP_FAILED, 99, req); | |
438 | break; | |
439 | default: | |
440 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 441 | "0x%x is not a valid transfer protocol status\n", |
c41f8cbd SS |
442 | qtcb->prefix.prot_status); |
443 | zfcp_erp_adapter_shutdown(adapter, 0, 119, req); | |
444 | } | |
445 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
446 | } |
447 | ||
c41f8cbd SS |
448 | /** |
449 | * zfcp_fsf_req_complete - process completion of a FSF request | |
450 | * @fsf_req: The FSF request that has been completed. | |
451 | * | |
452 | * When a request has been completed either from the FCP adapter, | |
453 | * or it has been dismissed due to a queue shutdown, this function | |
454 | * is called to process the completion status and trigger further | |
455 | * events related to the FSF request. | |
456 | */ | |
457 | void zfcp_fsf_req_complete(struct zfcp_fsf_req *req) | |
1da177e4 | 458 | { |
c41f8cbd SS |
459 | if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) { |
460 | zfcp_fsf_status_read_handler(req); | |
461 | return; | |
462 | } | |
1da177e4 | 463 | |
c41f8cbd SS |
464 | del_timer(&req->timer); |
465 | zfcp_fsf_protstatus_eval(req); | |
466 | zfcp_fsf_fsfstatus_eval(req); | |
467 | req->handler(req); | |
1da177e4 | 468 | |
c41f8cbd | 469 | if (req->erp_action) |
287ac01a | 470 | zfcp_erp_notify(req->erp_action, 0); |
c41f8cbd | 471 | req->status |= ZFCP_STATUS_FSFREQ_COMPLETED; |
1da177e4 | 472 | |
c41f8cbd SS |
473 | if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP)) |
474 | zfcp_fsf_req_free(req); | |
475 | else | |
476 | /* notify initiator waiting for the requests completion */ | |
477 | /* | |
478 | * FIXME: Race! We must not access fsf_req here as it might have been | |
479 | * cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED | |
480 | * flag. It's an improbable case. But, we have the same paranoia for | |
481 | * the cleanup flag already. | |
482 | * Might better be handled using complete()? | |
483 | * (setting the flag and doing wakeup ought to be atomic | |
484 | * with regard to checking the flag as long as waitqueue is | |
485 | * part of the to be released structure) | |
486 | */ | |
487 | wake_up(&req->completion_wq); | |
488 | } | |
1da177e4 | 489 | |
c41f8cbd SS |
490 | static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req) |
491 | { | |
492 | struct fsf_qtcb_bottom_config *bottom; | |
493 | struct zfcp_adapter *adapter = req->adapter; | |
494 | struct Scsi_Host *shost = adapter->scsi_host; | |
1da177e4 | 495 | |
c41f8cbd | 496 | bottom = &req->qtcb->bottom.config; |
1da177e4 | 497 | |
c41f8cbd SS |
498 | if (req->data) |
499 | memcpy(req->data, bottom, sizeof(*bottom)); | |
500 | ||
501 | fc_host_node_name(shost) = bottom->nport_serv_param.wwnn; | |
502 | fc_host_port_name(shost) = bottom->nport_serv_param.wwpn; | |
503 | fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK; | |
504 | fc_host_speed(shost) = bottom->fc_link_speed; | |
505 | fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3; | |
506 | ||
507 | adapter->hydra_version = bottom->adapter_type; | |
508 | adapter->timer_ticks = bottom->timer_interval; | |
509 | ||
510 | if (fc_host_permanent_port_name(shost) == -1) | |
511 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
512 | ||
513 | switch (bottom->fc_topology) { | |
514 | case FSF_TOPO_P2P: | |
515 | adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK; | |
516 | adapter->peer_wwpn = bottom->plogi_payload.wwpn; | |
517 | adapter->peer_wwnn = bottom->plogi_payload.wwnn; | |
518 | fc_host_port_type(shost) = FC_PORTTYPE_PTP; | |
c41f8cbd SS |
519 | break; |
520 | case FSF_TOPO_FABRIC: | |
521 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
c41f8cbd SS |
522 | break; |
523 | case FSF_TOPO_AL: | |
524 | fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; | |
c41f8cbd | 525 | default: |
c41f8cbd | 526 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
527 | "Unknown or unsupported arbitrated loop " |
528 | "fibre channel topology detected\n"); | |
529 | zfcp_erp_adapter_shutdown(adapter, 0, 127, req); | |
c41f8cbd | 530 | return -EIO; |
1da177e4 | 531 | } |
c41f8cbd | 532 | |
1da177e4 LT |
533 | return 0; |
534 | } | |
535 | ||
c41f8cbd | 536 | static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) |
553448f6 CS |
537 | { |
538 | struct zfcp_adapter *adapter = req->adapter; | |
c41f8cbd SS |
539 | struct fsf_qtcb *qtcb = req->qtcb; |
540 | struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config; | |
541 | struct Scsi_Host *shost = adapter->scsi_host; | |
553448f6 | 542 | |
c41f8cbd SS |
543 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
544 | return; | |
1da177e4 | 545 | |
c41f8cbd SS |
546 | adapter->fsf_lic_version = bottom->lic_version; |
547 | adapter->adapter_features = bottom->adapter_features; | |
548 | adapter->connection_features = bottom->connection_features; | |
549 | adapter->peer_wwpn = 0; | |
550 | adapter->peer_wwnn = 0; | |
551 | adapter->peer_d_id = 0; | |
8a36e453 | 552 | |
c41f8cbd SS |
553 | switch (qtcb->header.fsf_status) { |
554 | case FSF_GOOD: | |
555 | if (zfcp_fsf_exchange_config_evaluate(req)) | |
556 | return; | |
1da177e4 | 557 | |
c41f8cbd SS |
558 | if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { |
559 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
560 | "FCP adapter maximum QTCB size (%d bytes) " |
561 | "is too small\n", | |
562 | bottom->max_qtcb_size); | |
c41f8cbd SS |
563 | zfcp_erp_adapter_shutdown(adapter, 0, 129, req); |
564 | return; | |
565 | } | |
566 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, | |
567 | &adapter->status); | |
1da177e4 | 568 | break; |
c41f8cbd SS |
569 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
570 | fc_host_node_name(shost) = 0; | |
571 | fc_host_port_name(shost) = 0; | |
572 | fc_host_port_id(shost) = 0; | |
573 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; | |
574 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; | |
575 | adapter->hydra_version = 0; | |
1da177e4 | 576 | |
c41f8cbd SS |
577 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, |
578 | &adapter->status); | |
1da177e4 | 579 | |
c41f8cbd SS |
580 | zfcp_fsf_link_down_info_eval(req, 42, |
581 | &qtcb->header.fsf_status_qual.link_down_info); | |
1da177e4 | 582 | break; |
c41f8cbd SS |
583 | default: |
584 | zfcp_erp_adapter_shutdown(adapter, 0, 130, req); | |
585 | return; | |
586 | } | |
1da177e4 | 587 | |
c41f8cbd SS |
588 | if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) { |
589 | adapter->hardware_version = bottom->hardware_version; | |
590 | memcpy(fc_host_serial_number(shost), bottom->serial_number, | |
591 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
592 | EBCASC(fc_host_serial_number(shost), | |
593 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
594 | } | |
1da177e4 | 595 | |
c41f8cbd SS |
596 | if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) { |
597 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
598 | "The FCP adapter only supports newer " |
599 | "control block versions\n"); | |
c41f8cbd SS |
600 | zfcp_erp_adapter_shutdown(adapter, 0, 125, req); |
601 | return; | |
602 | } | |
603 | if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) { | |
604 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
605 | "The FCP adapter only supports older " |
606 | "control block versions\n"); | |
c41f8cbd SS |
607 | zfcp_erp_adapter_shutdown(adapter, 0, 126, req); |
608 | } | |
609 | } | |
1da177e4 | 610 | |
c41f8cbd SS |
611 | static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req) |
612 | { | |
613 | struct zfcp_adapter *adapter = req->adapter; | |
614 | struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port; | |
615 | struct Scsi_Host *shost = adapter->scsi_host; | |
1da177e4 | 616 | |
c41f8cbd SS |
617 | if (req->data) |
618 | memcpy(req->data, bottom, sizeof(*bottom)); | |
9eb69aff | 619 | |
c41f8cbd SS |
620 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) |
621 | fc_host_permanent_port_name(shost) = bottom->wwpn; | |
622 | else | |
623 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
624 | fc_host_maxframe_size(shost) = bottom->maximum_frame_size; | |
625 | fc_host_supported_speeds(shost) = bottom->supported_speed; | |
626 | } | |
1da177e4 | 627 | |
c41f8cbd SS |
628 | static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) |
629 | { | |
c41f8cbd SS |
630 | struct fsf_qtcb *qtcb = req->qtcb; |
631 | ||
632 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
633 | return; | |
634 | ||
635 | switch (qtcb->header.fsf_status) { | |
636 | case FSF_GOOD: | |
637 | zfcp_fsf_exchange_port_evaluate(req); | |
c41f8cbd SS |
638 | break; |
639 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: | |
640 | zfcp_fsf_exchange_port_evaluate(req); | |
c41f8cbd SS |
641 | zfcp_fsf_link_down_info_eval(req, 43, |
642 | &qtcb->header.fsf_status_qual.link_down_info); | |
aef4a983 | 643 | break; |
1da177e4 | 644 | } |
c41f8cbd | 645 | } |
d26ab06e | 646 | |
dedbc2b3 | 647 | static int zfcp_fsf_sbal_available(struct zfcp_adapter *adapter) |
c41f8cbd | 648 | { |
dedbc2b3 | 649 | if (atomic_read(&adapter->req_q.count) > 0) |
c41f8cbd | 650 | return 1; |
dedbc2b3 | 651 | atomic_inc(&adapter->qdio_outb_full); |
c41f8cbd | 652 | return 0; |
1da177e4 LT |
653 | } |
654 | ||
c41f8cbd | 655 | static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter) |
dedbc2b3 CS |
656 | __releases(&adapter->req_q_lock) |
657 | __acquires(&adapter->req_q_lock) | |
c41f8cbd | 658 | { |
dedbc2b3 | 659 | struct zfcp_qdio_queue *req_q = &adapter->req_q; |
c41f8cbd | 660 | long ret; |
c41f8cbd | 661 | |
dedbc2b3 CS |
662 | if (atomic_read(&req_q->count) <= -REQUEST_LIST_SIZE) |
663 | return -EIO; | |
664 | if (atomic_read(&req_q->count) > 0) | |
665 | return 0; | |
666 | ||
667 | atomic_dec(&req_q->count); | |
0406289e | 668 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 669 | ret = wait_event_interruptible_timeout(adapter->request_wq, |
dedbc2b3 CS |
670 | atomic_read(&req_q->count) >= 0, |
671 | 5 * HZ); | |
672 | spin_lock_bh(&adapter->req_q_lock); | |
673 | atomic_inc(&req_q->count); | |
674 | ||
c41f8cbd SS |
675 | if (ret > 0) |
676 | return 0; | |
2450d3e7 SR |
677 | if (!ret) |
678 | atomic_inc(&adapter->qdio_outb_full); | |
c41f8cbd SS |
679 | return -EIO; |
680 | } | |
681 | ||
682 | static struct zfcp_fsf_req *zfcp_fsf_alloc_noqtcb(mempool_t *pool) | |
683 | { | |
684 | struct zfcp_fsf_req *req; | |
685 | req = mempool_alloc(pool, GFP_ATOMIC); | |
686 | if (!req) | |
687 | return NULL; | |
688 | memset(req, 0, sizeof(*req)); | |
88f2a977 | 689 | req->pool = pool; |
c41f8cbd SS |
690 | return req; |
691 | } | |
692 | ||
693 | static struct zfcp_fsf_req *zfcp_fsf_alloc_qtcb(mempool_t *pool) | |
694 | { | |
695 | struct zfcp_fsf_req_qtcb *qtcb; | |
696 | ||
697 | if (likely(pool)) | |
698 | qtcb = mempool_alloc(pool, GFP_ATOMIC); | |
699 | else | |
700 | qtcb = kmem_cache_alloc(zfcp_data.fsf_req_qtcb_cache, | |
701 | GFP_ATOMIC); | |
702 | if (unlikely(!qtcb)) | |
703 | return NULL; | |
704 | ||
705 | memset(qtcb, 0, sizeof(*qtcb)); | |
706 | qtcb->fsf_req.qtcb = &qtcb->qtcb; | |
707 | qtcb->fsf_req.pool = pool; | |
708 | ||
709 | return &qtcb->fsf_req; | |
710 | } | |
711 | ||
712 | static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter, | |
713 | u32 fsf_cmd, int req_flags, | |
714 | mempool_t *pool) | |
1da177e4 | 715 | { |
44cc76f2 | 716 | struct qdio_buffer_element *sbale; |
1da177e4 | 717 | |
c41f8cbd SS |
718 | struct zfcp_fsf_req *req; |
719 | struct zfcp_qdio_queue *req_q = &adapter->req_q; | |
951f746f | 720 | |
c41f8cbd SS |
721 | if (req_flags & ZFCP_REQ_NO_QTCB) |
722 | req = zfcp_fsf_alloc_noqtcb(pool); | |
723 | else | |
724 | req = zfcp_fsf_alloc_qtcb(pool); | |
1da177e4 | 725 | |
c41f8cbd SS |
726 | if (unlikely(!req)) |
727 | return ERR_PTR(-EIO); | |
1da177e4 | 728 | |
c41f8cbd SS |
729 | if (adapter->req_no == 0) |
730 | adapter->req_no++; | |
1da177e4 | 731 | |
c41f8cbd SS |
732 | INIT_LIST_HEAD(&req->list); |
733 | init_timer(&req->timer); | |
734 | init_waitqueue_head(&req->completion_wq); | |
1da177e4 | 735 | |
c41f8cbd SS |
736 | req->adapter = adapter; |
737 | req->fsf_command = fsf_cmd; | |
738 | req->req_id = adapter->req_no++; | |
739 | req->sbal_number = 1; | |
740 | req->sbal_first = req_q->first; | |
741 | req->sbal_last = req_q->first; | |
742 | req->sbale_curr = 1; | |
743 | ||
744 | sbale = zfcp_qdio_sbale_req(req); | |
745 | sbale[0].addr = (void *) req->req_id; | |
746 | sbale[0].flags |= SBAL_FLAGS0_COMMAND; | |
747 | ||
748 | if (likely(req->qtcb)) { | |
749 | req->qtcb->prefix.req_seq_no = req->adapter->fsf_req_seq_no; | |
750 | req->qtcb->prefix.req_id = req->req_id; | |
751 | req->qtcb->prefix.ulp_info = 26; | |
752 | req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command]; | |
753 | req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION; | |
754 | req->qtcb->header.req_handle = req->req_id; | |
755 | req->qtcb->header.fsf_command = req->fsf_command; | |
756 | req->seq_no = adapter->fsf_req_seq_no; | |
757 | req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; | |
758 | sbale[1].addr = (void *) req->qtcb; | |
759 | sbale[1].length = sizeof(struct fsf_qtcb); | |
760 | } | |
761 | ||
762 | if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) { | |
763 | zfcp_fsf_req_free(req); | |
764 | return ERR_PTR(-EIO); | |
765 | } | |
951f746f | 766 | |
c41f8cbd SS |
767 | if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP)) |
768 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; | |
1da177e4 | 769 | |
c41f8cbd | 770 | return req; |
1da177e4 LT |
771 | } |
772 | ||
c41f8cbd SS |
773 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) |
774 | { | |
775 | struct zfcp_adapter *adapter = req->adapter; | |
45316a86 | 776 | unsigned long flags; |
c41f8cbd SS |
777 | int idx; |
778 | ||
779 | /* put allocated FSF request into hash table */ | |
45316a86 | 780 | spin_lock_irqsave(&adapter->req_list_lock, flags); |
c41f8cbd SS |
781 | idx = zfcp_reqlist_hash(req->req_id); |
782 | list_add_tail(&req->list, &adapter->req_list[idx]); | |
45316a86 | 783 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); |
c41f8cbd | 784 | |
3765138a | 785 | req->qdio_outb_usage = atomic_read(&adapter->req_q.count); |
c41f8cbd SS |
786 | req->issued = get_clock(); |
787 | if (zfcp_qdio_send(req)) { | |
c41f8cbd | 788 | del_timer(&req->timer); |
3765138a CS |
789 | spin_lock_irqsave(&adapter->req_list_lock, flags); |
790 | /* lookup request again, list might have changed */ | |
791 | if (zfcp_reqlist_find_safe(adapter, req)) | |
792 | zfcp_reqlist_remove(adapter, req); | |
793 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); | |
c41f8cbd SS |
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); | |
633528c3 SS |
936 | if (IS_ERR(req)) { |
937 | req = NULL; | |
c41f8cbd | 938 | goto out; |
633528c3 | 939 | } |
2abbe866 | 940 | |
c41f8cbd SS |
941 | if (unlikely(!(atomic_read(&unit->status) & |
942 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
943 | goto out_error_free; | |
1da177e4 | 944 | |
c41f8cbd SS |
945 | sbale = zfcp_qdio_sbale_req(req); |
946 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
947 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 948 | |
c41f8cbd SS |
949 | req->data = unit; |
950 | req->handler = zfcp_fsf_abort_fcp_command_handler; | |
951 | req->qtcb->header.lun_handle = unit->handle; | |
952 | req->qtcb->header.port_handle = unit->port->handle; | |
953 | req->qtcb->bottom.support.req_handle = (u64) old_req_id; | |
954 | ||
955 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); | |
956 | if (!zfcp_fsf_req_send(req)) | |
957 | goto out; | |
958 | ||
959 | out_error_free: | |
960 | zfcp_fsf_req_free(req); | |
961 | req = NULL; | |
962 | out: | |
0406289e | 963 | spin_unlock(&adapter->req_q_lock); |
c41f8cbd | 964 | return req; |
1da177e4 LT |
965 | } |
966 | ||
c41f8cbd | 967 | static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) |
1da177e4 | 968 | { |
c41f8cbd SS |
969 | struct zfcp_adapter *adapter = req->adapter; |
970 | struct zfcp_send_ct *send_ct = req->data; | |
c41f8cbd | 971 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1da177e4 | 972 | |
c41f8cbd | 973 | send_ct->status = -EINVAL; |
1da177e4 | 974 | |
c41f8cbd | 975 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
976 | goto skip_fsfstatus; |
977 | ||
1da177e4 | 978 | switch (header->fsf_status) { |
1da177e4 | 979 | case FSF_GOOD: |
c41f8cbd SS |
980 | zfcp_san_dbf_event_ct_response(req); |
981 | send_ct->status = 0; | |
1da177e4 | 982 | break; |
1da177e4 | 983 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 984 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 985 | break; |
1da177e4 | 986 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
987 | switch (header->fsf_status_qual.word[0]){ |
988 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 989 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 990 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 991 | break; |
1da177e4 LT |
992 | } |
993 | break; | |
1da177e4 | 994 | case FSF_ACCESS_DENIED: |
1da177e4 | 995 | break; |
1da177e4 | 996 | case FSF_PORT_BOXED: |
c41f8cbd SS |
997 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
998 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 999 | break; |
c41f8cbd SS |
1000 | case FSF_PORT_HANDLE_NOT_VALID: |
1001 | zfcp_erp_adapter_reopen(adapter, 0, 106, req); | |
1002 | case FSF_GENERIC_COMMAND_REJECTED: | |
1da177e4 | 1003 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1004 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1005 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1006 | case FSF_SBAL_MISMATCH: |
c41f8cbd | 1007 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1008 | break; |
1009 | } | |
1010 | ||
1011 | skip_fsfstatus: | |
c41f8cbd | 1012 | if (send_ct->handler) |
1da177e4 | 1013 | send_ct->handler(send_ct->handler_data); |
c41f8cbd | 1014 | } |
1da177e4 | 1015 | |
c41f8cbd SS |
1016 | static int zfcp_fsf_setup_sbals(struct zfcp_fsf_req *req, |
1017 | struct scatterlist *sg_req, | |
1018 | struct scatterlist *sg_resp, int max_sbals) | |
1019 | { | |
1020 | int bytes; | |
1021 | ||
1022 | bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, | |
1023 | sg_req, max_sbals); | |
1024 | if (bytes <= 0) | |
1025 | return -ENOMEM; | |
1026 | req->qtcb->bottom.support.req_buf_length = bytes; | |
1027 | req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; | |
1028 | ||
1029 | bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, | |
1030 | sg_resp, max_sbals); | |
1031 | if (bytes <= 0) | |
1032 | return -ENOMEM; | |
1033 | req->qtcb->bottom.support.resp_buf_length = bytes; | |
1034 | ||
1035 | return 0; | |
1da177e4 LT |
1036 | } |
1037 | ||
1038 | /** | |
c41f8cbd SS |
1039 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) |
1040 | * @ct: pointer to struct zfcp_send_ct with data for request | |
1041 | * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req | |
1042 | * @erp_action: if non-null the Generic Service request sent within ERP | |
1da177e4 | 1043 | */ |
c41f8cbd SS |
1044 | int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, |
1045 | struct zfcp_erp_action *erp_action) | |
1da177e4 | 1046 | { |
5ab944f9 SS |
1047 | struct zfcp_wka_port *wka_port = ct->wka_port; |
1048 | struct zfcp_adapter *adapter = wka_port->adapter; | |
c41f8cbd SS |
1049 | struct zfcp_fsf_req *req; |
1050 | int ret = -EIO; | |
1da177e4 | 1051 | |
0406289e | 1052 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1053 | if (zfcp_fsf_req_sbal_get(adapter)) |
1054 | goto out; | |
1da177e4 | 1055 | |
c41f8cbd SS |
1056 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC, |
1057 | ZFCP_REQ_AUTO_CLEANUP, pool); | |
025270f0 | 1058 | if (IS_ERR(req)) { |
c41f8cbd SS |
1059 | ret = PTR_ERR(req); |
1060 | goto out; | |
3f0ca62a CS |
1061 | } |
1062 | ||
c41f8cbd SS |
1063 | ret = zfcp_fsf_setup_sbals(req, ct->req, ct->resp, |
1064 | FSF_MAX_SBALS_PER_REQ); | |
553448f6 | 1065 | if (ret) |
1da177e4 | 1066 | goto failed_send; |
1da177e4 | 1067 | |
c41f8cbd | 1068 | req->handler = zfcp_fsf_send_ct_handler; |
5ab944f9 | 1069 | req->qtcb->header.port_handle = wka_port->handle; |
c41f8cbd SS |
1070 | req->qtcb->bottom.support.service_class = FSF_CLASS_3; |
1071 | req->qtcb->bottom.support.timeout = ct->timeout; | |
1072 | req->data = ct; | |
1073 | ||
1074 | zfcp_san_dbf_event_ct_request(req); | |
1075 | ||
1076 | if (erp_action) { | |
1077 | erp_action->fsf_req = req; | |
1078 | req->erp_action = erp_action; | |
287ac01a | 1079 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
1080 | } else |
1081 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1da177e4 | 1082 | |
c41f8cbd SS |
1083 | ret = zfcp_fsf_req_send(req); |
1084 | if (ret) | |
1085 | goto failed_send; | |
1da177e4 | 1086 | |
c41f8cbd | 1087 | goto out; |
1da177e4 | 1088 | |
c41f8cbd SS |
1089 | failed_send: |
1090 | zfcp_fsf_req_free(req); | |
1091 | if (erp_action) | |
1092 | erp_action->fsf_req = NULL; | |
1093 | out: | |
0406289e | 1094 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 1095 | return ret; |
1da177e4 LT |
1096 | } |
1097 | ||
c41f8cbd | 1098 | static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1099 | { |
c41f8cbd SS |
1100 | struct zfcp_send_els *send_els = req->data; |
1101 | struct zfcp_port *port = send_els->port; | |
1102 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1103 | |
c41f8cbd | 1104 | send_els->status = -EINVAL; |
1da177e4 | 1105 | |
c41f8cbd | 1106 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
1107 | goto skip_fsfstatus; |
1108 | ||
1109 | switch (header->fsf_status) { | |
1da177e4 | 1110 | case FSF_GOOD: |
c41f8cbd SS |
1111 | zfcp_san_dbf_event_els_response(req); |
1112 | send_els->status = 0; | |
1da177e4 | 1113 | break; |
1da177e4 | 1114 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 1115 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 1116 | break; |
1da177e4 | 1117 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1118 | switch (header->fsf_status_qual.word[0]){ |
1119 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
64b29a13 AH |
1120 | if (port && (send_els->ls_code != ZFCP_LS_ADISC)) |
1121 | zfcp_test_link(port); | |
c41f8cbd | 1122 | /*fall through */ |
1da177e4 | 1123 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1124 | case FSF_SQ_RETRY_IF_POSSIBLE: |
c41f8cbd | 1125 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1126 | break; |
1da177e4 LT |
1127 | } |
1128 | break; | |
1da177e4 | 1129 | case FSF_ELS_COMMAND_REJECTED: |
1da177e4 | 1130 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1131 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1132 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1133 | break; |
1da177e4 | 1134 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1135 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1136 | break; |
c41f8cbd SS |
1137 | case FSF_SBAL_MISMATCH: |
1138 | /* should never occure, avoided in zfcp_fsf_send_els */ | |
1139 | /* fall through */ | |
1da177e4 | 1140 | default: |
c41f8cbd | 1141 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1142 | break; |
1143 | } | |
1da177e4 | 1144 | skip_fsfstatus: |
aa551daf | 1145 | if (send_els->handler) |
1da177e4 | 1146 | send_els->handler(send_els->handler_data); |
c41f8cbd | 1147 | } |
1da177e4 | 1148 | |
c41f8cbd SS |
1149 | /** |
1150 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) | |
1151 | * @els: pointer to struct zfcp_send_els with data for the command | |
1152 | */ | |
1153 | int zfcp_fsf_send_els(struct zfcp_send_els *els) | |
1154 | { | |
1155 | struct zfcp_fsf_req *req; | |
1156 | struct zfcp_adapter *adapter = els->adapter; | |
1157 | struct fsf_qtcb_bottom_support *bottom; | |
1158 | int ret = -EIO; | |
1159 | ||
1160 | if (unlikely(!(atomic_read(&els->port->status) & | |
1161 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
1162 | return -EBUSY; | |
1163 | ||
0406289e | 1164 | spin_lock(&adapter->req_q_lock); |
2450d3e7 | 1165 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd SS |
1166 | goto out; |
1167 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS, | |
1168 | ZFCP_REQ_AUTO_CLEANUP, NULL); | |
025270f0 | 1169 | if (IS_ERR(req)) { |
c41f8cbd SS |
1170 | ret = PTR_ERR(req); |
1171 | goto out; | |
1172 | } | |
1173 | ||
44cc76f2 SS |
1174 | ret = zfcp_fsf_setup_sbals(req, els->req, els->resp, 2); |
1175 | ||
c41f8cbd SS |
1176 | if (ret) |
1177 | goto failed_send; | |
1178 | ||
1179 | bottom = &req->qtcb->bottom.support; | |
1180 | req->handler = zfcp_fsf_send_els_handler; | |
1181 | bottom->d_id = els->d_id; | |
1182 | bottom->service_class = FSF_CLASS_3; | |
1183 | bottom->timeout = 2 * R_A_TOV; | |
1184 | req->data = els; | |
1185 | ||
1186 | zfcp_san_dbf_event_els_request(req); | |
1187 | ||
1188 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1189 | ret = zfcp_fsf_req_send(req); | |
1190 | if (ret) | |
1191 | goto failed_send; | |
1192 | ||
1193 | goto out; | |
1194 | ||
1195 | failed_send: | |
1196 | zfcp_fsf_req_free(req); | |
1197 | out: | |
0406289e | 1198 | spin_unlock(&adapter->req_q_lock); |
c41f8cbd | 1199 | return ret; |
1da177e4 LT |
1200 | } |
1201 | ||
c41f8cbd | 1202 | int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1203 | { |
44cc76f2 | 1204 | struct qdio_buffer_element *sbale; |
c41f8cbd | 1205 | struct zfcp_fsf_req *req; |
52ef11a7 | 1206 | struct zfcp_adapter *adapter = erp_action->adapter; |
c41f8cbd SS |
1207 | int retval = -EIO; |
1208 | ||
0406289e | 1209 | spin_lock_bh(&adapter->req_q_lock); |
2450d3e7 | 1210 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd SS |
1211 | goto out; |
1212 | req = zfcp_fsf_req_create(adapter, | |
1213 | FSF_QTCB_EXCHANGE_CONFIG_DATA, | |
1214 | ZFCP_REQ_AUTO_CLEANUP, | |
1215 | adapter->pool.fsf_req_erp); | |
025270f0 | 1216 | if (IS_ERR(req)) { |
c41f8cbd SS |
1217 | retval = PTR_ERR(req); |
1218 | goto out; | |
1da177e4 LT |
1219 | } |
1220 | ||
c41f8cbd | 1221 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1222 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1223 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1224 | |
c41f8cbd | 1225 | req->qtcb->bottom.config.feature_selection = |
aef4a983 MS |
1226 | FSF_FEATURE_CFDC | |
1227 | FSF_FEATURE_LUN_SHARING | | |
9eb69aff | 1228 | FSF_FEATURE_NOTIFICATION_LOST | |
aef4a983 | 1229 | FSF_FEATURE_UPDATE_ALERT; |
c41f8cbd SS |
1230 | req->erp_action = erp_action; |
1231 | req->handler = zfcp_fsf_exchange_config_data_handler; | |
1232 | erp_action->fsf_req = req; | |
1da177e4 | 1233 | |
287ac01a | 1234 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1235 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1236 | if (retval) { |
c41f8cbd | 1237 | zfcp_fsf_req_free(req); |
1da177e4 | 1238 | erp_action->fsf_req = NULL; |
1da177e4 | 1239 | } |
c41f8cbd | 1240 | out: |
0406289e | 1241 | spin_unlock_bh(&adapter->req_q_lock); |
52ef11a7 SS |
1242 | return retval; |
1243 | } | |
1da177e4 | 1244 | |
c41f8cbd SS |
1245 | int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter, |
1246 | struct fsf_qtcb_bottom_config *data) | |
52ef11a7 | 1247 | { |
44cc76f2 | 1248 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1249 | struct zfcp_fsf_req *req = NULL; |
1250 | int retval = -EIO; | |
1251 | ||
0406289e | 1252 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1253 | if (zfcp_fsf_req_sbal_get(adapter)) |
1254 | goto out; | |
1255 | ||
1256 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA, | |
1257 | 0, NULL); | |
025270f0 | 1258 | if (IS_ERR(req)) { |
c41f8cbd SS |
1259 | retval = PTR_ERR(req); |
1260 | goto out; | |
52ef11a7 SS |
1261 | } |
1262 | ||
c41f8cbd | 1263 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1264 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1265 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
c41f8cbd | 1266 | req->handler = zfcp_fsf_exchange_config_data_handler; |
52ef11a7 | 1267 | |
c41f8cbd | 1268 | req->qtcb->bottom.config.feature_selection = |
52ef11a7 SS |
1269 | FSF_FEATURE_CFDC | |
1270 | FSF_FEATURE_LUN_SHARING | | |
1271 | FSF_FEATURE_NOTIFICATION_LOST | | |
1272 | FSF_FEATURE_UPDATE_ALERT; | |
1273 | ||
1274 | if (data) | |
c41f8cbd | 1275 | req->data = data; |
52ef11a7 | 1276 | |
c41f8cbd SS |
1277 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
1278 | retval = zfcp_fsf_req_send(req); | |
1279 | out: | |
0406289e | 1280 | spin_unlock_bh(&adapter->req_q_lock); |
553448f6 | 1281 | if (!retval) |
c41f8cbd SS |
1282 | wait_event(req->completion_wq, |
1283 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
52ef11a7 | 1284 | |
c41f8cbd | 1285 | zfcp_fsf_req_free(req); |
52ef11a7 | 1286 | |
1da177e4 LT |
1287 | return retval; |
1288 | } | |
1289 | ||
1da177e4 LT |
1290 | /** |
1291 | * zfcp_fsf_exchange_port_data - request information about local port | |
aef4a983 | 1292 | * @erp_action: ERP action for the adapter for which port data is requested |
c41f8cbd | 1293 | * Returns: 0 on success, error otherwise |
1da177e4 | 1294 | */ |
c41f8cbd | 1295 | int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1296 | { |
44cc76f2 | 1297 | struct qdio_buffer_element *sbale; |
c41f8cbd | 1298 | struct zfcp_fsf_req *req; |
52ef11a7 | 1299 | struct zfcp_adapter *adapter = erp_action->adapter; |
c41f8cbd | 1300 | int retval = -EIO; |
1da177e4 | 1301 | |
553448f6 | 1302 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1303 | return -EOPNOTSUPP; |
1da177e4 | 1304 | |
0406289e | 1305 | spin_lock_bh(&adapter->req_q_lock); |
2450d3e7 | 1306 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd SS |
1307 | goto out; |
1308 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, | |
1309 | ZFCP_REQ_AUTO_CLEANUP, | |
1310 | adapter->pool.fsf_req_erp); | |
025270f0 | 1311 | if (IS_ERR(req)) { |
c41f8cbd SS |
1312 | retval = PTR_ERR(req); |
1313 | goto out; | |
aef4a983 MS |
1314 | } |
1315 | ||
c41f8cbd | 1316 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1317 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1318 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1319 | |
c41f8cbd SS |
1320 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1321 | req->erp_action = erp_action; | |
1322 | erp_action->fsf_req = req; | |
52ef11a7 | 1323 | |
287ac01a | 1324 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1325 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1326 | if (retval) { |
c41f8cbd | 1327 | zfcp_fsf_req_free(req); |
52ef11a7 SS |
1328 | erp_action->fsf_req = NULL; |
1329 | } | |
c41f8cbd | 1330 | out: |
0406289e | 1331 | spin_unlock_bh(&adapter->req_q_lock); |
52ef11a7 SS |
1332 | return retval; |
1333 | } | |
1334 | ||
52ef11a7 SS |
1335 | /** |
1336 | * zfcp_fsf_exchange_port_data_sync - request information about local port | |
c41f8cbd SS |
1337 | * @adapter: pointer to struct zfcp_adapter |
1338 | * @data: pointer to struct fsf_qtcb_bottom_port | |
1339 | * Returns: 0 on success, error otherwise | |
52ef11a7 | 1340 | */ |
c41f8cbd SS |
1341 | int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, |
1342 | struct fsf_qtcb_bottom_port *data) | |
52ef11a7 | 1343 | { |
44cc76f2 | 1344 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1345 | struct zfcp_fsf_req *req = NULL; |
1346 | int retval = -EIO; | |
52ef11a7 | 1347 | |
553448f6 | 1348 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1349 | return -EOPNOTSUPP; |
52ef11a7 | 1350 | |
0406289e | 1351 | spin_lock_bh(&adapter->req_q_lock); |
2450d3e7 | 1352 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd SS |
1353 | goto out; |
1354 | ||
1355 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, 0, | |
1356 | NULL); | |
025270f0 | 1357 | if (IS_ERR(req)) { |
c41f8cbd SS |
1358 | retval = PTR_ERR(req); |
1359 | goto out; | |
1da177e4 LT |
1360 | } |
1361 | ||
52ef11a7 | 1362 | if (data) |
c41f8cbd | 1363 | req->data = data; |
52ef11a7 | 1364 | |
c41f8cbd | 1365 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1366 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1367 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1368 | ||
c41f8cbd SS |
1369 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1370 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1371 | retval = zfcp_fsf_req_send(req); | |
1372 | out: | |
0406289e | 1373 | spin_unlock_bh(&adapter->req_q_lock); |
553448f6 | 1374 | if (!retval) |
c41f8cbd SS |
1375 | wait_event(req->completion_wq, |
1376 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
1377 | zfcp_fsf_req_free(req); | |
1da177e4 | 1378 | |
1da177e4 LT |
1379 | return retval; |
1380 | } | |
1381 | ||
c41f8cbd | 1382 | static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1383 | { |
c41f8cbd SS |
1384 | struct zfcp_port *port = req->data; |
1385 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1386 | struct fsf_plogi *plogi; |
1da177e4 | 1387 | |
c41f8cbd | 1388 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1389 | return; |
1da177e4 | 1390 | |
1da177e4 | 1391 | switch (header->fsf_status) { |
1da177e4 | 1392 | case FSF_PORT_ALREADY_OPEN: |
1da177e4 | 1393 | break; |
1da177e4 | 1394 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1395 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1396 | break; |
1da177e4 | 1397 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: |
c41f8cbd | 1398 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 1399 | "Not enough FCP adapter resources to open " |
7ba58c9c SS |
1400 | "remote port 0x%016Lx\n", |
1401 | (unsigned long long)port->wwpn); | |
c41f8cbd SS |
1402 | zfcp_erp_port_failed(port, 31, req); |
1403 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1404 | break; |
1da177e4 | 1405 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1406 | switch (header->fsf_status_qual.word[0]) { |
1407 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1408 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1409 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1410 | break; |
1411 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
c41f8cbd | 1412 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 1413 | "Remote port 0x%016Lx could not be opened\n", |
7ba58c9c | 1414 | (unsigned long long)port->wwpn); |
c41f8cbd SS |
1415 | zfcp_erp_port_failed(port, 32, req); |
1416 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
1417 | break; |
1418 | } | |
1419 | break; | |
1da177e4 | 1420 | case FSF_GOOD: |
1da177e4 | 1421 | port->handle = header->port_handle; |
1da177e4 LT |
1422 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN | |
1423 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
d736a27b AH |
1424 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
1425 | ZFCP_STATUS_COMMON_ACCESS_BOXED, | |
1426 | &port->status); | |
1da177e4 LT |
1427 | /* check whether D_ID has changed during open */ |
1428 | /* | |
1429 | * FIXME: This check is not airtight, as the FCP channel does | |
1430 | * not monitor closures of target port connections caused on | |
1431 | * the remote side. Thus, they might miss out on invalidating | |
1432 | * locally cached WWPNs (and other N_Port parameters) of gone | |
1433 | * target ports. So, our heroic attempt to make things safe | |
1434 | * could be undermined by 'open port' response data tagged with | |
1435 | * obsolete WWPNs. Another reason to monitor potential | |
1436 | * connection closures ourself at least (by interpreting | |
1437 | * incoming ELS' and unsolicited status). It just crosses my | |
1438 | * mind that one should be able to cross-check by means of | |
1439 | * another GID_PN straight after a port has been opened. | |
1440 | * Alternately, an ADISC/PDISC ELS should suffice, as well. | |
1441 | */ | |
c41f8cbd SS |
1442 | plogi = (struct fsf_plogi *) req->qtcb->bottom.support.els; |
1443 | if (req->qtcb->bottom.support.els1_length >= sizeof(*plogi)) { | |
1444 | if (plogi->serv_param.wwpn != port->wwpn) | |
b98478d7 | 1445 | port->d_id = 0; |
c41f8cbd SS |
1446 | else { |
1447 | port->wwnn = plogi->serv_param.wwnn; | |
1448 | zfcp_fc_plogi_evaluate(port, plogi); | |
1da177e4 LT |
1449 | } |
1450 | } | |
1451 | break; | |
1da177e4 | 1452 | case FSF_UNKNOWN_OP_SUBTYPE: |
c41f8cbd | 1453 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1454 | break; |
1455 | } | |
1da177e4 LT |
1456 | } |
1457 | ||
c41f8cbd SS |
1458 | /** |
1459 | * zfcp_fsf_open_port - create and send open port request | |
1460 | * @erp_action: pointer to struct zfcp_erp_action | |
1461 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1462 | */ |
c41f8cbd | 1463 | int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1464 | { |
44cc76f2 | 1465 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1466 | struct zfcp_adapter *adapter = erp_action->adapter; |
1467 | struct zfcp_fsf_req *req; | |
1468 | int retval = -EIO; | |
1469 | ||
0406289e | 1470 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1471 | if (zfcp_fsf_req_sbal_get(adapter)) |
1472 | goto out; | |
1473 | ||
1474 | req = zfcp_fsf_req_create(adapter, | |
1475 | FSF_QTCB_OPEN_PORT_WITH_DID, | |
1476 | ZFCP_REQ_AUTO_CLEANUP, | |
1477 | adapter->pool.fsf_req_erp); | |
025270f0 | 1478 | if (IS_ERR(req)) { |
c41f8cbd | 1479 | retval = PTR_ERR(req); |
1da177e4 | 1480 | goto out; |
c41f8cbd | 1481 | } |
1da177e4 | 1482 | |
c41f8cbd | 1483 | sbale = zfcp_qdio_sbale_req(req); |
1da177e4 LT |
1484 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1485 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1486 | ||
c41f8cbd SS |
1487 | req->handler = zfcp_fsf_open_port_handler; |
1488 | req->qtcb->bottom.support.d_id = erp_action->port->d_id; | |
1489 | req->data = erp_action->port; | |
1490 | req->erp_action = erp_action; | |
1491 | erp_action->fsf_req = req; | |
c41f8cbd | 1492 | |
287ac01a | 1493 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1494 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1495 | if (retval) { |
c41f8cbd | 1496 | zfcp_fsf_req_free(req); |
1da177e4 | 1497 | erp_action->fsf_req = NULL; |
1da177e4 | 1498 | } |
c41f8cbd | 1499 | out: |
0406289e | 1500 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1501 | return retval; |
1502 | } | |
1503 | ||
c41f8cbd | 1504 | static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1505 | { |
c41f8cbd | 1506 | struct zfcp_port *port = req->data; |
1da177e4 | 1507 | |
c41f8cbd | 1508 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1509 | return; |
1da177e4 | 1510 | |
c41f8cbd | 1511 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1512 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd SS |
1513 | zfcp_erp_adapter_reopen(port->adapter, 0, 107, req); |
1514 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1515 | break; |
1da177e4 | 1516 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 | 1517 | break; |
1da177e4 | 1518 | case FSF_GOOD: |
c41f8cbd | 1519 | zfcp_erp_modify_port_status(port, 33, req, |
1da177e4 LT |
1520 | ZFCP_STATUS_COMMON_OPEN, |
1521 | ZFCP_CLEAR); | |
1da177e4 | 1522 | break; |
1da177e4 | 1523 | } |
1da177e4 LT |
1524 | } |
1525 | ||
c41f8cbd SS |
1526 | /** |
1527 | * zfcp_fsf_close_port - create and send close port request | |
1528 | * @erp_action: pointer to struct zfcp_erp_action | |
1529 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1530 | */ |
c41f8cbd | 1531 | int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1532 | { |
44cc76f2 | 1533 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1534 | struct zfcp_adapter *adapter = erp_action->adapter; |
1535 | struct zfcp_fsf_req *req; | |
1536 | int retval = -EIO; | |
1537 | ||
0406289e | 1538 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1539 | if (zfcp_fsf_req_sbal_get(adapter)) |
1540 | goto out; | |
1541 | ||
1542 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT, | |
1543 | ZFCP_REQ_AUTO_CLEANUP, | |
1544 | adapter->pool.fsf_req_erp); | |
025270f0 | 1545 | if (IS_ERR(req)) { |
c41f8cbd | 1546 | retval = PTR_ERR(req); |
1da177e4 | 1547 | goto out; |
c41f8cbd | 1548 | } |
1da177e4 | 1549 | |
c41f8cbd | 1550 | sbale = zfcp_qdio_sbale_req(req); |
1da177e4 LT |
1551 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1552 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1553 | ||
c41f8cbd SS |
1554 | req->handler = zfcp_fsf_close_port_handler; |
1555 | req->data = erp_action->port; | |
1556 | req->erp_action = erp_action; | |
1557 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1558 | erp_action->fsf_req = req; | |
c41f8cbd | 1559 | |
287ac01a | 1560 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1561 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1562 | if (retval) { |
c41f8cbd | 1563 | zfcp_fsf_req_free(req); |
1da177e4 | 1564 | erp_action->fsf_req = NULL; |
1da177e4 | 1565 | } |
c41f8cbd | 1566 | out: |
0406289e | 1567 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1568 | return retval; |
1569 | } | |
1570 | ||
5ab944f9 SS |
1571 | static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req) |
1572 | { | |
1573 | struct zfcp_wka_port *wka_port = req->data; | |
1574 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1575 | ||
1576 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
1577 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1578 | goto out; | |
1579 | } | |
1580 | ||
1581 | switch (header->fsf_status) { | |
1582 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: | |
1583 | dev_warn(&req->adapter->ccw_device->dev, | |
1584 | "Opening WKA port 0x%x failed\n", wka_port->d_id); | |
1585 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1586 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1587 | case FSF_ACCESS_DENIED: | |
1588 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1589 | break; | |
1590 | case FSF_PORT_ALREADY_OPEN: | |
1c1cba17 | 1591 | break; |
5ab944f9 SS |
1592 | case FSF_GOOD: |
1593 | wka_port->handle = header->port_handle; | |
1594 | wka_port->status = ZFCP_WKA_PORT_ONLINE; | |
1595 | } | |
1596 | out: | |
1597 | wake_up(&wka_port->completion_wq); | |
1598 | } | |
1599 | ||
1600 | /** | |
1601 | * zfcp_fsf_open_wka_port - create and send open wka-port request | |
1602 | * @wka_port: pointer to struct zfcp_wka_port | |
1603 | * Returns: 0 on success, error otherwise | |
1604 | */ | |
1605 | int zfcp_fsf_open_wka_port(struct zfcp_wka_port *wka_port) | |
1606 | { | |
1607 | struct qdio_buffer_element *sbale; | |
1608 | struct zfcp_adapter *adapter = wka_port->adapter; | |
1609 | struct zfcp_fsf_req *req; | |
1610 | int retval = -EIO; | |
1611 | ||
0406289e | 1612 | spin_lock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1613 | if (zfcp_fsf_req_sbal_get(adapter)) |
1614 | goto out; | |
1615 | ||
1616 | req = zfcp_fsf_req_create(adapter, | |
1617 | FSF_QTCB_OPEN_PORT_WITH_DID, | |
1618 | ZFCP_REQ_AUTO_CLEANUP, | |
1619 | adapter->pool.fsf_req_erp); | |
1620 | if (unlikely(IS_ERR(req))) { | |
1621 | retval = PTR_ERR(req); | |
1622 | goto out; | |
1623 | } | |
1624 | ||
1625 | sbale = zfcp_qdio_sbale_req(req); | |
1626 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1627 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1628 | ||
1629 | req->handler = zfcp_fsf_open_wka_port_handler; | |
1630 | req->qtcb->bottom.support.d_id = wka_port->d_id; | |
1631 | req->data = wka_port; | |
1632 | ||
1633 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1634 | retval = zfcp_fsf_req_send(req); | |
1635 | if (retval) | |
1636 | zfcp_fsf_req_free(req); | |
1637 | out: | |
0406289e | 1638 | spin_unlock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1639 | return retval; |
1640 | } | |
1641 | ||
1642 | static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req) | |
1643 | { | |
1644 | struct zfcp_wka_port *wka_port = req->data; | |
1645 | ||
1646 | if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) { | |
1647 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
41bfcf90 | 1648 | zfcp_erp_adapter_reopen(wka_port->adapter, 0, 84, req); |
5ab944f9 SS |
1649 | } |
1650 | ||
1651 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1652 | wake_up(&wka_port->completion_wq); | |
1653 | } | |
1654 | ||
1655 | /** | |
1656 | * zfcp_fsf_close_wka_port - create and send close wka port request | |
1657 | * @erp_action: pointer to struct zfcp_erp_action | |
1658 | * Returns: 0 on success, error otherwise | |
1659 | */ | |
1660 | int zfcp_fsf_close_wka_port(struct zfcp_wka_port *wka_port) | |
1661 | { | |
1662 | struct qdio_buffer_element *sbale; | |
1663 | struct zfcp_adapter *adapter = wka_port->adapter; | |
1664 | struct zfcp_fsf_req *req; | |
1665 | int retval = -EIO; | |
1666 | ||
0406289e | 1667 | spin_lock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1668 | if (zfcp_fsf_req_sbal_get(adapter)) |
1669 | goto out; | |
1670 | ||
1671 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT, | |
1672 | ZFCP_REQ_AUTO_CLEANUP, | |
1673 | adapter->pool.fsf_req_erp); | |
1674 | if (unlikely(IS_ERR(req))) { | |
1675 | retval = PTR_ERR(req); | |
1676 | goto out; | |
1677 | } | |
1678 | ||
1679 | sbale = zfcp_qdio_sbale_req(req); | |
1680 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1681 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1682 | ||
1683 | req->handler = zfcp_fsf_close_wka_port_handler; | |
1684 | req->data = wka_port; | |
1685 | req->qtcb->header.port_handle = wka_port->handle; | |
1686 | ||
1687 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1688 | retval = zfcp_fsf_req_send(req); | |
1689 | if (retval) | |
1690 | zfcp_fsf_req_free(req); | |
1691 | out: | |
0406289e | 1692 | spin_unlock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1693 | return retval; |
1694 | } | |
1695 | ||
c41f8cbd | 1696 | static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1697 | { |
c41f8cbd SS |
1698 | struct zfcp_port *port = req->data; |
1699 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1700 | struct zfcp_unit *unit; |
1da177e4 | 1701 | |
c41f8cbd | 1702 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 | 1703 | goto skip_fsfstatus; |
1da177e4 | 1704 | |
1da177e4 | 1705 | switch (header->fsf_status) { |
1da177e4 | 1706 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd SS |
1707 | zfcp_erp_adapter_reopen(port->adapter, 0, 108, req); |
1708 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1709 | break; |
1da177e4 | 1710 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1711 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1712 | break; |
1da177e4 | 1713 | case FSF_PORT_BOXED: |
c41f8cbd SS |
1714 | zfcp_erp_port_boxed(port, 50, req); |
1715 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
1716 | ZFCP_STATUS_FSFREQ_RETRY; | |
5c815d15 CS |
1717 | /* can't use generic zfcp_erp_modify_port_status because |
1718 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */ | |
1719 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
1720 | list_for_each_entry(unit, &port->unit_list_head, list) | |
1721 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, | |
1722 | &unit->status); | |
1da177e4 | 1723 | break; |
1da177e4 | 1724 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1725 | switch (header->fsf_status_qual.word[0]) { |
1726 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
c41f8cbd | 1727 | /* fall through */ |
1da177e4 | 1728 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1729 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1730 | break; |
1da177e4 LT |
1731 | } |
1732 | break; | |
1da177e4 | 1733 | case FSF_GOOD: |
1da177e4 LT |
1734 | /* can't use generic zfcp_erp_modify_port_status because |
1735 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port | |
1736 | */ | |
1737 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
1738 | list_for_each_entry(unit, &port->unit_list_head, list) | |
c41f8cbd SS |
1739 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, |
1740 | &unit->status); | |
1da177e4 | 1741 | break; |
1da177e4 | 1742 | } |
c41f8cbd | 1743 | skip_fsfstatus: |
1da177e4 | 1744 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, &port->status); |
1da177e4 LT |
1745 | } |
1746 | ||
c41f8cbd SS |
1747 | /** |
1748 | * zfcp_fsf_close_physical_port - close physical port | |
1749 | * @erp_action: pointer to struct zfcp_erp_action | |
1750 | * Returns: 0 on success | |
1da177e4 | 1751 | */ |
c41f8cbd | 1752 | int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1753 | { |
44cc76f2 | 1754 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1755 | struct zfcp_adapter *adapter = erp_action->adapter; |
1756 | struct zfcp_fsf_req *req; | |
1757 | int retval = -EIO; | |
1758 | ||
0406289e | 1759 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 1760 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 1761 | goto out; |
1da177e4 | 1762 | |
c41f8cbd SS |
1763 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PHYSICAL_PORT, |
1764 | ZFCP_REQ_AUTO_CLEANUP, | |
1765 | adapter->pool.fsf_req_erp); | |
025270f0 | 1766 | if (IS_ERR(req)) { |
c41f8cbd SS |
1767 | retval = PTR_ERR(req); |
1768 | goto out; | |
1769 | } | |
1da177e4 | 1770 | |
c41f8cbd SS |
1771 | sbale = zfcp_qdio_sbale_req(req); |
1772 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1773 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1774 | |
c41f8cbd SS |
1775 | req->data = erp_action->port; |
1776 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1777 | req->erp_action = erp_action; | |
1778 | req->handler = zfcp_fsf_close_physical_port_handler; | |
1779 | erp_action->fsf_req = req; | |
1780 | atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, | |
1781 | &erp_action->port->status); | |
1782 | ||
287ac01a | 1783 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1784 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1785 | if (retval) { |
c41f8cbd | 1786 | zfcp_fsf_req_free(req); |
1da177e4 | 1787 | erp_action->fsf_req = NULL; |
1da177e4 | 1788 | } |
c41f8cbd | 1789 | out: |
0406289e | 1790 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1791 | return retval; |
1792 | } | |
1793 | ||
c41f8cbd | 1794 | static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1795 | { |
c41f8cbd SS |
1796 | struct zfcp_adapter *adapter = req->adapter; |
1797 | struct zfcp_unit *unit = req->data; | |
1798 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1799 | struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support; | |
1800 | struct fsf_queue_designator *queue_designator = | |
1801 | &header->fsf_status_qual.fsf_queue_designator; | |
aef4a983 | 1802 | int exclusive, readwrite; |
1da177e4 | 1803 | |
c41f8cbd | 1804 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1805 | return; |
1da177e4 | 1806 | |
1da177e4 | 1807 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
b64ddf96 | 1808 | ZFCP_STATUS_COMMON_ACCESS_BOXED | |
1da177e4 LT |
1809 | ZFCP_STATUS_UNIT_SHARED | |
1810 | ZFCP_STATUS_UNIT_READONLY, | |
1811 | &unit->status); | |
1812 | ||
1da177e4 LT |
1813 | switch (header->fsf_status) { |
1814 | ||
1815 | case FSF_PORT_HANDLE_NOT_VALID: | |
c41f8cbd SS |
1816 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 109, req); |
1817 | /* fall through */ | |
1da177e4 | 1818 | case FSF_LUN_ALREADY_OPEN: |
1da177e4 | 1819 | break; |
1da177e4 | 1820 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1821 | zfcp_fsf_access_denied_unit(req, unit); |
1da177e4 | 1822 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
553448f6 | 1823 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); |
1da177e4 | 1824 | break; |
1da177e4 | 1825 | case FSF_PORT_BOXED: |
c41f8cbd SS |
1826 | zfcp_erp_port_boxed(unit->port, 51, req); |
1827 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
1828 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 1829 | break; |
1da177e4 | 1830 | case FSF_LUN_SHARING_VIOLATION: |
c41f8cbd | 1831 | if (header->fsf_status_qual.word[0]) |
553448f6 | 1832 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1833 | "LUN 0x%Lx on port 0x%Lx is already in " |
1834 | "use by CSS%d, MIF Image ID %x\n", | |
7ba58c9c SS |
1835 | (unsigned long long)unit->fcp_lun, |
1836 | (unsigned long long)unit->port->wwpn, | |
ff3b24fa CS |
1837 | queue_designator->cssid, |
1838 | queue_designator->hla); | |
c41f8cbd | 1839 | else |
553448f6 CS |
1840 | zfcp_act_eval_err(adapter, |
1841 | header->fsf_status_qual.word[2]); | |
c41f8cbd | 1842 | zfcp_erp_unit_access_denied(unit, 60, req); |
1da177e4 LT |
1843 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
1844 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); | |
c41f8cbd | 1845 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1846 | break; |
1da177e4 | 1847 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: |
c41f8cbd | 1848 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1849 | "No handle is available for LUN " |
1850 | "0x%016Lx on port 0x%016Lx\n", | |
7ba58c9c SS |
1851 | (unsigned long long)unit->fcp_lun, |
1852 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
1853 | zfcp_erp_unit_failed(unit, 34, req); |
1854 | /* fall through */ | |
1855 | case FSF_INVALID_COMMAND_OPTION: | |
1856 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1857 | break; |
1da177e4 | 1858 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1859 | switch (header->fsf_status_qual.word[0]) { |
1860 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
65a8d4e1 | 1861 | zfcp_test_link(unit->port); |
c41f8cbd | 1862 | /* fall through */ |
1da177e4 | 1863 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1864 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1865 | break; |
1da177e4 LT |
1866 | } |
1867 | break; | |
1868 | ||
1da177e4 | 1869 | case FSF_GOOD: |
1da177e4 | 1870 | unit->handle = header->lun_handle; |
1da177e4 | 1871 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
aef4a983 MS |
1872 | |
1873 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) && | |
1874 | (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) && | |
1875 | (adapter->ccw_device->id.dev_model != ZFCP_DEVICE_MODEL_PRIV)) { | |
1876 | exclusive = (bottom->lun_access_info & | |
1877 | FSF_UNIT_ACCESS_EXCLUSIVE); | |
1878 | readwrite = (bottom->lun_access_info & | |
1879 | FSF_UNIT_ACCESS_OUTBOUND_TRANSFER); | |
1880 | ||
1da177e4 LT |
1881 | if (!exclusive) |
1882 | atomic_set_mask(ZFCP_STATUS_UNIT_SHARED, | |
1883 | &unit->status); | |
1884 | ||
1885 | if (!readwrite) { | |
1886 | atomic_set_mask(ZFCP_STATUS_UNIT_READONLY, | |
1887 | &unit->status); | |
c41f8cbd | 1888 | dev_info(&adapter->ccw_device->dev, |
ff3b24fa CS |
1889 | "SCSI device at LUN 0x%016Lx on port " |
1890 | "0x%016Lx opened read-only\n", | |
7ba58c9c SS |
1891 | (unsigned long long)unit->fcp_lun, |
1892 | (unsigned long long)unit->port->wwpn); | |
1da177e4 LT |
1893 | } |
1894 | ||
1895 | if (exclusive && !readwrite) { | |
c41f8cbd | 1896 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
1897 | "Exclusive read-only access not " |
1898 | "supported (unit 0x%016Lx, " | |
1899 | "port 0x%016Lx)\n", | |
7ba58c9c SS |
1900 | (unsigned long long)unit->fcp_lun, |
1901 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
1902 | zfcp_erp_unit_failed(unit, 35, req); |
1903 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1904 | zfcp_erp_unit_shutdown(unit, 0, 80, req); | |
1da177e4 | 1905 | } else if (!exclusive && readwrite) { |
c41f8cbd | 1906 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
1907 | "Shared read-write access not " |
1908 | "supported (unit 0x%016Lx, port " | |
27c3f0a6 | 1909 | "0x%016Lx)\n", |
7ba58c9c SS |
1910 | (unsigned long long)unit->fcp_lun, |
1911 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
1912 | zfcp_erp_unit_failed(unit, 36, req); |
1913 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1914 | zfcp_erp_unit_shutdown(unit, 0, 81, req); | |
1da177e4 LT |
1915 | } |
1916 | } | |
1da177e4 | 1917 | break; |
1da177e4 | 1918 | } |
1da177e4 LT |
1919 | } |
1920 | ||
c41f8cbd SS |
1921 | /** |
1922 | * zfcp_fsf_open_unit - open unit | |
1923 | * @erp_action: pointer to struct zfcp_erp_action | |
1924 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1925 | */ |
c41f8cbd | 1926 | int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) |
1da177e4 | 1927 | { |
44cc76f2 | 1928 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1929 | struct zfcp_adapter *adapter = erp_action->adapter; |
1930 | struct zfcp_fsf_req *req; | |
1931 | int retval = -EIO; | |
1932 | ||
0406289e | 1933 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 1934 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 1935 | goto out; |
1da177e4 | 1936 | |
c41f8cbd SS |
1937 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_OPEN_LUN, |
1938 | ZFCP_REQ_AUTO_CLEANUP, | |
1939 | adapter->pool.fsf_req_erp); | |
025270f0 | 1940 | if (IS_ERR(req)) { |
c41f8cbd SS |
1941 | retval = PTR_ERR(req); |
1942 | goto out; | |
1943 | } | |
1944 | ||
1945 | sbale = zfcp_qdio_sbale_req(req); | |
1da177e4 LT |
1946 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1947 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1948 | ||
c41f8cbd SS |
1949 | req->qtcb->header.port_handle = erp_action->port->handle; |
1950 | req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun; | |
1951 | req->handler = zfcp_fsf_open_unit_handler; | |
1952 | req->data = erp_action->unit; | |
1953 | req->erp_action = erp_action; | |
1954 | erp_action->fsf_req = req; | |
1955 | ||
1956 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) | |
1957 | req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING; | |
1958 | ||
287ac01a | 1959 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1960 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1961 | if (retval) { |
c41f8cbd | 1962 | zfcp_fsf_req_free(req); |
1da177e4 | 1963 | erp_action->fsf_req = NULL; |
1da177e4 | 1964 | } |
c41f8cbd | 1965 | out: |
0406289e | 1966 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1967 | return retval; |
1968 | } | |
1969 | ||
c41f8cbd | 1970 | static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1971 | { |
c41f8cbd | 1972 | struct zfcp_unit *unit = req->data; |
1da177e4 | 1973 | |
c41f8cbd | 1974 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1975 | return; |
1da177e4 | 1976 | |
c41f8cbd | 1977 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1978 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd SS |
1979 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 110, req); |
1980 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1981 | break; |
1da177e4 | 1982 | case FSF_LUN_HANDLE_NOT_VALID: |
c41f8cbd SS |
1983 | zfcp_erp_port_reopen(unit->port, 0, 111, req); |
1984 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1985 | break; |
1da177e4 | 1986 | case FSF_PORT_BOXED: |
c41f8cbd SS |
1987 | zfcp_erp_port_boxed(unit->port, 52, req); |
1988 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
1989 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 1990 | break; |
1da177e4 | 1991 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 1992 | switch (req->qtcb->header.fsf_status_qual.word[0]) { |
1da177e4 | 1993 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
65a8d4e1 | 1994 | zfcp_test_link(unit->port); |
c41f8cbd | 1995 | /* fall through */ |
1da177e4 | 1996 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1997 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1998 | break; |
1999 | } | |
2000 | break; | |
1da177e4 | 2001 | case FSF_GOOD: |
1da177e4 | 2002 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
1da177e4 | 2003 | break; |
1da177e4 | 2004 | } |
1da177e4 LT |
2005 | } |
2006 | ||
2007 | /** | |
c41f8cbd SS |
2008 | * zfcp_fsf_close_unit - close zfcp unit |
2009 | * @erp_action: pointer to struct zfcp_unit | |
2010 | * Returns: 0 on success, error otherwise | |
1da177e4 | 2011 | */ |
c41f8cbd | 2012 | int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) |
1da177e4 | 2013 | { |
44cc76f2 | 2014 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2015 | struct zfcp_adapter *adapter = erp_action->adapter; |
2016 | struct zfcp_fsf_req *req; | |
2017 | int retval = -EIO; | |
1da177e4 | 2018 | |
0406289e | 2019 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 2020 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 2021 | goto out; |
c41f8cbd SS |
2022 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_LUN, |
2023 | ZFCP_REQ_AUTO_CLEANUP, | |
2024 | adapter->pool.fsf_req_erp); | |
025270f0 | 2025 | if (IS_ERR(req)) { |
c41f8cbd SS |
2026 | retval = PTR_ERR(req); |
2027 | goto out; | |
2028 | } | |
1da177e4 | 2029 | |
c41f8cbd SS |
2030 | sbale = zfcp_qdio_sbale_req(req); |
2031 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1da177e4 LT |
2032 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; |
2033 | ||
c41f8cbd SS |
2034 | req->qtcb->header.port_handle = erp_action->port->handle; |
2035 | req->qtcb->header.lun_handle = erp_action->unit->handle; | |
2036 | req->handler = zfcp_fsf_close_unit_handler; | |
2037 | req->data = erp_action->unit; | |
2038 | req->erp_action = erp_action; | |
2039 | erp_action->fsf_req = req; | |
fdf23452 | 2040 | |
287ac01a | 2041 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
2042 | retval = zfcp_fsf_req_send(req); |
2043 | if (retval) { | |
2044 | zfcp_fsf_req_free(req); | |
2045 | erp_action->fsf_req = NULL; | |
2046 | } | |
2047 | out: | |
0406289e | 2048 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 2049 | return retval; |
1da177e4 LT |
2050 | } |
2051 | ||
c9615858 CS |
2052 | static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat) |
2053 | { | |
2054 | lat_rec->sum += lat; | |
c41f8cbd SS |
2055 | lat_rec->min = min(lat_rec->min, lat); |
2056 | lat_rec->max = max(lat_rec->max, lat); | |
c9615858 CS |
2057 | } |
2058 | ||
c41f8cbd | 2059 | static void zfcp_fsf_req_latency(struct zfcp_fsf_req *req) |
c9615858 CS |
2060 | { |
2061 | struct fsf_qual_latency_info *lat_inf; | |
2062 | struct latency_cont *lat; | |
c41f8cbd | 2063 | struct zfcp_unit *unit = req->unit; |
c9615858 CS |
2064 | unsigned long flags; |
2065 | ||
c41f8cbd | 2066 | lat_inf = &req->qtcb->prefix.prot_status_qual.latency_info; |
c9615858 | 2067 | |
c41f8cbd | 2068 | switch (req->qtcb->bottom.io.data_direction) { |
c9615858 CS |
2069 | case FSF_DATADIR_READ: |
2070 | lat = &unit->latencies.read; | |
2071 | break; | |
2072 | case FSF_DATADIR_WRITE: | |
2073 | lat = &unit->latencies.write; | |
2074 | break; | |
2075 | case FSF_DATADIR_CMND: | |
2076 | lat = &unit->latencies.cmd; | |
2077 | break; | |
2078 | default: | |
2079 | return; | |
2080 | } | |
2081 | ||
2082 | spin_lock_irqsave(&unit->latencies.lock, flags); | |
2083 | zfcp_fsf_update_lat(&lat->channel, lat_inf->channel_lat); | |
2084 | zfcp_fsf_update_lat(&lat->fabric, lat_inf->fabric_lat); | |
2085 | lat->counter++; | |
c41f8cbd | 2086 | spin_unlock_irqrestore(&unit->latencies.lock, flags); |
1da177e4 LT |
2087 | } |
2088 | ||
0997f1c5 SR |
2089 | #ifdef CONFIG_BLK_DEV_IO_TRACE |
2090 | static void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req) | |
2091 | { | |
2092 | struct fsf_qual_latency_info *lat_inf; | |
2093 | struct scsi_cmnd *scsi_cmnd = (struct scsi_cmnd *)fsf_req->data; | |
2094 | struct request *req = scsi_cmnd->request; | |
2095 | struct zfcp_blk_drv_data trace; | |
2096 | int ticks = fsf_req->adapter->timer_ticks; | |
2097 | ||
2098 | trace.flags = 0; | |
2099 | trace.magic = ZFCP_BLK_DRV_DATA_MAGIC; | |
2100 | if (fsf_req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) { | |
2101 | trace.flags |= ZFCP_BLK_LAT_VALID; | |
2102 | lat_inf = &fsf_req->qtcb->prefix.prot_status_qual.latency_info; | |
2103 | trace.channel_lat = lat_inf->channel_lat * ticks; | |
2104 | trace.fabric_lat = lat_inf->fabric_lat * ticks; | |
2105 | } | |
2106 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
2107 | trace.flags |= ZFCP_BLK_REQ_ERROR; | |
2108 | trace.inb_usage = fsf_req->qdio_inb_usage; | |
2109 | trace.outb_usage = fsf_req->qdio_outb_usage; | |
2110 | ||
2111 | blk_add_driver_data(req->q, req, &trace, sizeof(trace)); | |
2112 | } | |
2113 | #else | |
2114 | static inline void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req) | |
2115 | { | |
2116 | } | |
2117 | #endif | |
2118 | ||
c41f8cbd | 2119 | static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2120 | { |
0ac55aa9 | 2121 | struct scsi_cmnd *scpnt; |
1da177e4 | 2122 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) |
c41f8cbd | 2123 | &(req->qtcb->bottom.io.fcp_rsp); |
1da177e4 | 2124 | u32 sns_len; |
f76af7d7 | 2125 | char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; |
1da177e4 | 2126 | unsigned long flags; |
1da177e4 | 2127 | |
c41f8cbd SS |
2128 | read_lock_irqsave(&req->adapter->abort_lock, flags); |
2129 | ||
0ac55aa9 SS |
2130 | scpnt = req->data; |
2131 | if (unlikely(!scpnt)) { | |
2132 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); | |
2133 | return; | |
2134 | } | |
2135 | ||
c41f8cbd | 2136 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ABORTED)) { |
feac6a07 MP |
2137 | set_host_byte(scpnt, DID_SOFT_ERROR); |
2138 | set_driver_byte(scpnt, SUGGEST_RETRY); | |
1da177e4 LT |
2139 | goto skip_fsfstatus; |
2140 | } | |
2141 | ||
c41f8cbd | 2142 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { |
feac6a07 | 2143 | set_host_byte(scpnt, DID_ERROR); |
1da177e4 LT |
2144 | goto skip_fsfstatus; |
2145 | } | |
2146 | ||
feac6a07 | 2147 | set_msg_byte(scpnt, COMMAND_COMPLETE); |
1da177e4 | 2148 | |
1da177e4 | 2149 | scpnt->result |= fcp_rsp_iu->scsi_status; |
1da177e4 | 2150 | |
c41f8cbd SS |
2151 | if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) |
2152 | zfcp_fsf_req_latency(req); | |
c9615858 | 2153 | |
0997f1c5 SR |
2154 | zfcp_fsf_trace_latency(req); |
2155 | ||
1da177e4 | 2156 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) { |
c41f8cbd | 2157 | if (fcp_rsp_info[3] == RSP_CODE_GOOD) |
feac6a07 | 2158 | set_host_byte(scpnt, DID_OK); |
c41f8cbd | 2159 | else { |
feac6a07 | 2160 | set_host_byte(scpnt, DID_ERROR); |
6f71d9bc | 2161 | goto skip_fsfstatus; |
1da177e4 LT |
2162 | } |
2163 | } | |
2164 | ||
1da177e4 | 2165 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_sns_len_valid)) { |
c41f8cbd SS |
2166 | sns_len = FSF_FCP_RSP_SIZE - sizeof(struct fcp_rsp_iu) + |
2167 | fcp_rsp_iu->fcp_rsp_len; | |
1da177e4 | 2168 | sns_len = min(sns_len, (u32) SCSI_SENSE_BUFFERSIZE); |
1da177e4 | 2169 | sns_len = min(sns_len, fcp_rsp_iu->fcp_sns_len); |
1da177e4 | 2170 | |
9d058ecf | 2171 | memcpy(scpnt->sense_buffer, |
1da177e4 | 2172 | zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len); |
1da177e4 LT |
2173 | } |
2174 | ||
1da177e4 | 2175 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_under)) { |
7936a892 FT |
2176 | scsi_set_resid(scpnt, fcp_rsp_iu->fcp_resid); |
2177 | if (scsi_bufflen(scpnt) - scsi_get_resid(scpnt) < | |
2178 | scpnt->underflow) | |
feac6a07 | 2179 | set_host_byte(scpnt, DID_ERROR); |
1da177e4 | 2180 | } |
c41f8cbd | 2181 | skip_fsfstatus: |
8a36e453 | 2182 | if (scpnt->result != 0) |
c41f8cbd | 2183 | zfcp_scsi_dbf_event_result("erro", 3, req->adapter, scpnt, req); |
8a36e453 | 2184 | else if (scpnt->retries > 0) |
c41f8cbd | 2185 | zfcp_scsi_dbf_event_result("retr", 4, req->adapter, scpnt, req); |
8a36e453 | 2186 | else |
c41f8cbd | 2187 | zfcp_scsi_dbf_event_result("norm", 6, req->adapter, scpnt, req); |
1da177e4 | 2188 | |
1da177e4 | 2189 | scpnt->host_scribble = NULL; |
1da177e4 | 2190 | (scpnt->scsi_done) (scpnt); |
1da177e4 LT |
2191 | /* |
2192 | * We must hold this lock until scsi_done has been called. | |
2193 | * Otherwise we may call scsi_done after abort regarding this | |
2194 | * command has completed. | |
2195 | * Note: scsi_done must not block! | |
2196 | */ | |
c41f8cbd | 2197 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); |
1da177e4 LT |
2198 | } |
2199 | ||
c41f8cbd | 2200 | static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2201 | { |
1da177e4 | 2202 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) |
c41f8cbd | 2203 | &(req->qtcb->bottom.io.fcp_rsp); |
f76af7d7 | 2204 | char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; |
1da177e4 | 2205 | |
c41f8cbd SS |
2206 | if ((fcp_rsp_info[3] != RSP_CODE_GOOD) || |
2207 | (req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
2208 | req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
2209 | } | |
2210 | ||
2211 | ||
2212 | static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req) | |
2213 | { | |
2214 | struct zfcp_unit *unit; | |
2215 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
2216 | ||
2217 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)) | |
2218 | unit = req->data; | |
2219 | else | |
2220 | unit = req->unit; | |
2221 | ||
2222 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
1da177e4 | 2223 | goto skip_fsfstatus; |
1da177e4 | 2224 | |
c41f8cbd SS |
2225 | switch (header->fsf_status) { |
2226 | case FSF_HANDLE_MISMATCH: | |
2227 | case FSF_PORT_HANDLE_NOT_VALID: | |
2228 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 112, req); | |
2229 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2230 | break; | |
2231 | case FSF_FCPLUN_NOT_VALID: | |
2232 | case FSF_LUN_HANDLE_NOT_VALID: | |
2233 | zfcp_erp_port_reopen(unit->port, 0, 113, req); | |
2234 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 2235 | break; |
c41f8cbd SS |
2236 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
2237 | zfcp_fsf_class_not_supp(req); | |
1da177e4 | 2238 | break; |
c41f8cbd SS |
2239 | case FSF_ACCESS_DENIED: |
2240 | zfcp_fsf_access_denied_unit(req, unit); | |
2241 | break; | |
2242 | case FSF_DIRECTION_INDICATOR_NOT_VALID: | |
2243 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
2244 | "Incorrect direction %d, unit 0x%016Lx on port " |
2245 | "0x%016Lx closed\n", | |
c41f8cbd | 2246 | req->qtcb->bottom.io.data_direction, |
7ba58c9c SS |
2247 | (unsigned long long)unit->fcp_lun, |
2248 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
2249 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 133, req); |
2250 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2251 | break; | |
2252 | case FSF_CMND_LENGTH_NOT_VALID: | |
2253 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
2254 | "Incorrect CDB length %d, unit 0x%016Lx on " |
2255 | "port 0x%016Lx closed\n", | |
c41f8cbd | 2256 | req->qtcb->bottom.io.fcp_cmnd_length, |
7ba58c9c SS |
2257 | (unsigned long long)unit->fcp_lun, |
2258 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
2259 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 134, req); |
2260 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2261 | break; | |
2262 | case FSF_PORT_BOXED: | |
2263 | zfcp_erp_port_boxed(unit->port, 53, req); | |
2264 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
2265 | ZFCP_STATUS_FSFREQ_RETRY; | |
2266 | break; | |
2267 | case FSF_LUN_BOXED: | |
2268 | zfcp_erp_unit_boxed(unit, 54, req); | |
2269 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
2270 | ZFCP_STATUS_FSFREQ_RETRY; | |
2271 | break; | |
2272 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
2273 | if (header->fsf_status_qual.word[0] == | |
2274 | FSF_SQ_INVOKE_LINK_TEST_PROCEDURE) | |
2275 | zfcp_test_link(unit->port); | |
2276 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 2277 | break; |
1da177e4 | 2278 | } |
c41f8cbd SS |
2279 | skip_fsfstatus: |
2280 | if (req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT) | |
2281 | zfcp_fsf_send_fcp_ctm_handler(req); | |
2282 | else { | |
2283 | zfcp_fsf_send_fcp_command_task_handler(req); | |
2284 | req->unit = NULL; | |
2285 | zfcp_unit_put(unit); | |
2286 | } | |
1da177e4 LT |
2287 | } |
2288 | ||
7ba58c9c SS |
2289 | static void zfcp_set_fcp_dl(struct fcp_cmnd_iu *fcp_cmd, u32 fcp_dl) |
2290 | { | |
2291 | u32 *fcp_dl_ptr; | |
2292 | ||
2293 | /* | |
2294 | * fcp_dl_addr = start address of fcp_cmnd structure + | |
2295 | * size of fixed part + size of dynamically sized add_dcp_cdb field | |
2296 | * SEE FCP-2 documentation | |
2297 | */ | |
2298 | fcp_dl_ptr = (u32 *) ((unsigned char *) &fcp_cmd[1] + | |
2299 | (fcp_cmd->add_fcp_cdb_length << 2)); | |
2300 | *fcp_dl_ptr = fcp_dl; | |
2301 | } | |
2302 | ||
c41f8cbd SS |
2303 | /** |
2304 | * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command) | |
2305 | * @adapter: adapter where scsi command is issued | |
2306 | * @unit: unit where command is sent to | |
2307 | * @scsi_cmnd: scsi command to be sent | |
2308 | * @timer: timer to be started when request is initiated | |
2309 | * @req_flags: flags for fsf_request | |
1da177e4 | 2310 | */ |
c41f8cbd SS |
2311 | int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter, |
2312 | struct zfcp_unit *unit, | |
2313 | struct scsi_cmnd *scsi_cmnd, | |
2314 | int use_timer, int req_flags) | |
1da177e4 | 2315 | { |
c41f8cbd SS |
2316 | struct zfcp_fsf_req *req; |
2317 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
2318 | unsigned int sbtype; | |
2319 | int real_bytes, retval = -EIO; | |
1da177e4 | 2320 | |
c41f8cbd SS |
2321 | if (unlikely(!(atomic_read(&unit->status) & |
2322 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2323 | return -EBUSY; | |
1da177e4 | 2324 | |
0406289e | 2325 | spin_lock(&adapter->req_q_lock); |
2450d3e7 | 2326 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd SS |
2327 | goto out; |
2328 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, | |
2329 | adapter->pool.fsf_req_scsi); | |
025270f0 | 2330 | if (IS_ERR(req)) { |
c41f8cbd SS |
2331 | retval = PTR_ERR(req); |
2332 | goto out; | |
2333 | } | |
2334 | ||
2335 | zfcp_unit_get(unit); | |
2336 | req->unit = unit; | |
2337 | req->data = scsi_cmnd; | |
2338 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2339 | req->qtcb->header.lun_handle = unit->handle; | |
2340 | req->qtcb->header.port_handle = unit->port->handle; | |
2341 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
2342 | ||
2343 | scsi_cmnd->host_scribble = (unsigned char *) req->req_id; | |
2344 | ||
2345 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) &(req->qtcb->bottom.io.fcp_cmnd); | |
2346 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
2347 | /* | |
2348 | * set depending on data direction: | |
2349 | * data direction bits in SBALE (SB Type) | |
2350 | * data direction bits in QTCB | |
2351 | * data direction bits in FCP_CMND IU | |
2352 | */ | |
2353 | switch (scsi_cmnd->sc_data_direction) { | |
2354 | case DMA_NONE: | |
2355 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
2356 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
1da177e4 | 2357 | break; |
c41f8cbd SS |
2358 | case DMA_FROM_DEVICE: |
2359 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ; | |
2360 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
2361 | fcp_cmnd_iu->rddata = 1; | |
2362 | break; | |
2363 | case DMA_TO_DEVICE: | |
2364 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE; | |
2365 | sbtype = SBAL_FLAGS0_TYPE_WRITE; | |
2366 | fcp_cmnd_iu->wddata = 1; | |
1da177e4 | 2367 | break; |
c41f8cbd | 2368 | case DMA_BIDIRECTIONAL: |
1da177e4 | 2369 | default: |
c41f8cbd SS |
2370 | retval = -EIO; |
2371 | goto failed_scsi_cmnd; | |
1da177e4 LT |
2372 | } |
2373 | ||
c41f8cbd SS |
2374 | if (likely((scsi_cmnd->device->simple_tags) || |
2375 | ((atomic_read(&unit->status) & ZFCP_STATUS_UNIT_READONLY) && | |
2376 | (atomic_read(&unit->status) & ZFCP_STATUS_UNIT_SHARED)))) | |
2377 | fcp_cmnd_iu->task_attribute = SIMPLE_Q; | |
2378 | else | |
2379 | fcp_cmnd_iu->task_attribute = UNTAGGED; | |
1da177e4 | 2380 | |
c41f8cbd SS |
2381 | if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH)) |
2382 | fcp_cmnd_iu->add_fcp_cdb_length = | |
2383 | (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2; | |
1da177e4 | 2384 | |
c41f8cbd | 2385 | memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); |
45633fdc | 2386 | |
c41f8cbd | 2387 | req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + |
7ba58c9c | 2388 | fcp_cmnd_iu->add_fcp_cdb_length + sizeof(u32); |
1da177e4 | 2389 | |
c41f8cbd SS |
2390 | real_bytes = zfcp_qdio_sbals_from_sg(req, sbtype, |
2391 | scsi_sglist(scsi_cmnd), | |
2392 | FSF_MAX_SBALS_PER_REQ); | |
2393 | if (unlikely(real_bytes < 0)) { | |
2394 | if (req->sbal_number < FSF_MAX_SBALS_PER_REQ) | |
2395 | retval = -EIO; | |
2396 | else { | |
2397 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
2398 | "Oversize data package, unit 0x%016Lx " |
2399 | "on port 0x%016Lx closed\n", | |
7ba58c9c SS |
2400 | (unsigned long long)unit->fcp_lun, |
2401 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
2402 | zfcp_erp_unit_shutdown(unit, 0, 131, req); |
2403 | retval = -EINVAL; | |
2404 | } | |
2405 | goto failed_scsi_cmnd; | |
1da177e4 | 2406 | } |
1da177e4 | 2407 | |
c41f8cbd | 2408 | zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes); |
1da177e4 | 2409 | |
c41f8cbd SS |
2410 | if (use_timer) |
2411 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1da177e4 | 2412 | |
c41f8cbd SS |
2413 | retval = zfcp_fsf_req_send(req); |
2414 | if (unlikely(retval)) | |
2415 | goto failed_scsi_cmnd; | |
1da177e4 | 2416 | |
c41f8cbd | 2417 | goto out; |
1da177e4 | 2418 | |
c41f8cbd SS |
2419 | failed_scsi_cmnd: |
2420 | zfcp_unit_put(unit); | |
2421 | zfcp_fsf_req_free(req); | |
2422 | scsi_cmnd->host_scribble = NULL; | |
2423 | out: | |
0406289e | 2424 | spin_unlock(&adapter->req_q_lock); |
c41f8cbd | 2425 | return retval; |
1da177e4 LT |
2426 | } |
2427 | ||
2428 | /** | |
c41f8cbd SS |
2429 | * zfcp_fsf_send_fcp_ctm - send SCSI task management command |
2430 | * @adapter: pointer to struct zfcp-adapter | |
2431 | * @unit: pointer to struct zfcp_unit | |
2432 | * @tm_flags: unsigned byte for task management flags | |
2433 | * @req_flags: int request flags | |
2434 | * Returns: on success pointer to struct fsf_req, NULL otherwise | |
1da177e4 | 2435 | */ |
c41f8cbd SS |
2436 | struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_adapter *adapter, |
2437 | struct zfcp_unit *unit, | |
2438 | u8 tm_flags, int req_flags) | |
1da177e4 | 2439 | { |
44cc76f2 | 2440 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2441 | struct zfcp_fsf_req *req = NULL; |
2442 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
1da177e4 | 2443 | |
c41f8cbd SS |
2444 | if (unlikely(!(atomic_read(&unit->status) & |
2445 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2446 | return NULL; | |
1da177e4 | 2447 | |
0406289e | 2448 | spin_lock(&adapter->req_q_lock); |
2450d3e7 | 2449 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd SS |
2450 | goto out; |
2451 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, | |
2452 | adapter->pool.fsf_req_scsi); | |
633528c3 SS |
2453 | if (IS_ERR(req)) { |
2454 | req = NULL; | |
c41f8cbd | 2455 | goto out; |
633528c3 | 2456 | } |
1da177e4 | 2457 | |
c41f8cbd SS |
2458 | req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT; |
2459 | req->data = unit; | |
2460 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2461 | req->qtcb->header.lun_handle = unit->handle; | |
2462 | req->qtcb->header.port_handle = unit->port->handle; | |
2463 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
2464 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
2465 | req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + | |
7ba58c9c | 2466 | sizeof(u32); |
c41f8cbd SS |
2467 | |
2468 | sbale = zfcp_qdio_sbale_req(req); | |
2469 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE; | |
2470 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 2471 | |
c41f8cbd SS |
2472 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) &req->qtcb->bottom.io.fcp_cmnd; |
2473 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
2474 | fcp_cmnd_iu->task_management_flags = tm_flags; | |
1da177e4 | 2475 | |
c41f8cbd SS |
2476 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); |
2477 | if (!zfcp_fsf_req_send(req)) | |
2478 | goto out; | |
1da177e4 | 2479 | |
c41f8cbd SS |
2480 | zfcp_fsf_req_free(req); |
2481 | req = NULL; | |
2482 | out: | |
0406289e | 2483 | spin_unlock(&adapter->req_q_lock); |
c41f8cbd SS |
2484 | return req; |
2485 | } | |
1da177e4 | 2486 | |
c41f8cbd SS |
2487 | static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req) |
2488 | { | |
2489 | if (req->qtcb->header.fsf_status != FSF_GOOD) | |
2490 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
2491 | } |
2492 | ||
c41f8cbd SS |
2493 | /** |
2494 | * zfcp_fsf_control_file - control file upload/download | |
2495 | * @adapter: pointer to struct zfcp_adapter | |
2496 | * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc | |
2497 | * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise | |
1da177e4 | 2498 | */ |
c41f8cbd SS |
2499 | struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, |
2500 | struct zfcp_fsf_cfdc *fsf_cfdc) | |
1da177e4 | 2501 | { |
44cc76f2 | 2502 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2503 | struct zfcp_fsf_req *req = NULL; |
2504 | struct fsf_qtcb_bottom_support *bottom; | |
2505 | int direction, retval = -EIO, bytes; | |
2506 | ||
2507 | if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) | |
2508 | return ERR_PTR(-EOPNOTSUPP); | |
2509 | ||
2510 | switch (fsf_cfdc->command) { | |
2511 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
2512 | direction = SBAL_FLAGS0_TYPE_WRITE; | |
2513 | break; | |
2514 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
2515 | direction = SBAL_FLAGS0_TYPE_READ; | |
2516 | break; | |
2517 | default: | |
2518 | return ERR_PTR(-EINVAL); | |
2519 | } | |
1da177e4 | 2520 | |
0406289e | 2521 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
2522 | if (zfcp_fsf_req_sbal_get(adapter)) |
2523 | goto out; | |
1da177e4 | 2524 | |
c41f8cbd | 2525 | req = zfcp_fsf_req_create(adapter, fsf_cfdc->command, 0, NULL); |
025270f0 | 2526 | if (IS_ERR(req)) { |
c41f8cbd SS |
2527 | retval = -EPERM; |
2528 | goto out; | |
2529 | } | |
1da177e4 | 2530 | |
c41f8cbd | 2531 | req->handler = zfcp_fsf_control_file_handler; |
1da177e4 | 2532 | |
c41f8cbd SS |
2533 | sbale = zfcp_qdio_sbale_req(req); |
2534 | sbale[0].flags |= direction; | |
8a36e453 | 2535 | |
c41f8cbd SS |
2536 | bottom = &req->qtcb->bottom.support; |
2537 | bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE; | |
2538 | bottom->option = fsf_cfdc->option; | |
8a36e453 | 2539 | |
c41f8cbd SS |
2540 | bytes = zfcp_qdio_sbals_from_sg(req, direction, fsf_cfdc->sg, |
2541 | FSF_MAX_SBALS_PER_REQ); | |
2542 | if (bytes != ZFCP_CFDC_MAX_SIZE) { | |
2543 | retval = -ENOMEM; | |
2544 | zfcp_fsf_req_free(req); | |
2545 | goto out; | |
2546 | } | |
1da177e4 | 2547 | |
c41f8cbd SS |
2548 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
2549 | retval = zfcp_fsf_req_send(req); | |
2550 | out: | |
0406289e | 2551 | spin_unlock_bh(&adapter->req_q_lock); |
8a36e453 | 2552 | |
c41f8cbd SS |
2553 | if (!retval) { |
2554 | wait_event(req->completion_wq, | |
2555 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
2556 | return req; | |
1da177e4 | 2557 | } |
c41f8cbd | 2558 | return ERR_PTR(retval); |
1da177e4 | 2559 | } |