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 | ||
63caf367 CS |
15 | #define ZFCP_REQ_AUTO_CLEANUP 0x00000002 |
16 | #define ZFCP_REQ_NO_QTCB 0x00000008 | |
17 | ||
287ac01a CS |
18 | static void zfcp_fsf_request_timeout_handler(unsigned long data) |
19 | { | |
20 | struct zfcp_adapter *adapter = (struct zfcp_adapter *) data; | |
21 | zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, 62, | |
22 | NULL); | |
23 | } | |
24 | ||
25 | static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req, | |
26 | unsigned long timeout) | |
27 | { | |
28 | fsf_req->timer.function = zfcp_fsf_request_timeout_handler; | |
29 | fsf_req->timer.data = (unsigned long) fsf_req->adapter; | |
30 | fsf_req->timer.expires = jiffies + timeout; | |
31 | add_timer(&fsf_req->timer); | |
32 | } | |
33 | ||
34 | static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req) | |
35 | { | |
36 | BUG_ON(!fsf_req->erp_action); | |
37 | fsf_req->timer.function = zfcp_erp_timeout_handler; | |
38 | fsf_req->timer.data = (unsigned long) fsf_req->erp_action; | |
39 | fsf_req->timer.expires = jiffies + 30 * HZ; | |
40 | add_timer(&fsf_req->timer); | |
41 | } | |
42 | ||
1da177e4 LT |
43 | /* association between FSF command and FSF QTCB type */ |
44 | static u32 fsf_qtcb_type[] = { | |
45 | [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND, | |
46 | [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND, | |
47 | [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND, | |
48 | [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND, | |
49 | [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND, | |
50 | [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND, | |
51 | [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND, | |
52 | [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND, | |
53 | [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND, | |
54 | [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND, | |
55 | [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND, | |
56 | [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND, | |
57 | [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND | |
58 | }; | |
59 | ||
553448f6 CS |
60 | static void zfcp_act_eval_err(struct zfcp_adapter *adapter, u32 table) |
61 | { | |
c41f8cbd | 62 | u16 subtable = table >> 16; |
553448f6 | 63 | u16 rule = table & 0xffff; |
ff3b24fa | 64 | const char *act_type[] = { "unknown", "OS", "WWPN", "DID", "LUN" }; |
553448f6 | 65 | |
ff3b24fa | 66 | if (subtable && subtable < ARRAY_SIZE(act_type)) |
553448f6 | 67 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
68 | "Access denied according to ACT rule type %s, " |
69 | "rule %d\n", act_type[subtable], rule); | |
553448f6 CS |
70 | } |
71 | ||
72 | static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req, | |
73 | struct zfcp_port *port) | |
74 | { | |
75 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
76 | dev_warn(&req->adapter->ccw_device->dev, | |
ff3b24fa | 77 | "Access denied to port 0x%016Lx\n", |
7ba58c9c | 78 | (unsigned long long)port->wwpn); |
553448f6 CS |
79 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); |
80 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); | |
81 | zfcp_erp_port_access_denied(port, 55, req); | |
82 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
83 | } | |
84 | ||
85 | static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req *req, | |
86 | struct zfcp_unit *unit) | |
87 | { | |
88 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
89 | dev_warn(&req->adapter->ccw_device->dev, | |
ff3b24fa | 90 | "Access denied to unit 0x%016Lx on port 0x%016Lx\n", |
7ba58c9c SS |
91 | (unsigned long long)unit->fcp_lun, |
92 | (unsigned long long)unit->port->wwpn); | |
553448f6 CS |
93 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); |
94 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); | |
95 | zfcp_erp_unit_access_denied(unit, 59, req); | |
96 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
97 | } | |
98 | ||
99 | static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req) | |
100 | { | |
ff3b24fa CS |
101 | dev_err(&req->adapter->ccw_device->dev, "FCP device not " |
102 | "operational because of an unsupported FC class\n"); | |
553448f6 CS |
103 | zfcp_erp_adapter_shutdown(req->adapter, 0, 123, req); |
104 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
105 | } | |
106 | ||
c41f8cbd SS |
107 | /** |
108 | * zfcp_fsf_req_free - free memory used by fsf request | |
109 | * @fsf_req: pointer to struct zfcp_fsf_req | |
1da177e4 | 110 | */ |
c41f8cbd | 111 | void zfcp_fsf_req_free(struct zfcp_fsf_req *req) |
1da177e4 | 112 | { |
c41f8cbd SS |
113 | if (likely(req->pool)) { |
114 | mempool_free(req, req->pool); | |
dd52e0ea HC |
115 | return; |
116 | } | |
117 | ||
c41f8cbd SS |
118 | if (req->qtcb) { |
119 | kmem_cache_free(zfcp_data.fsf_req_qtcb_cache, req); | |
dd52e0ea HC |
120 | return; |
121 | } | |
1da177e4 LT |
122 | } |
123 | ||
c41f8cbd SS |
124 | /** |
125 | * zfcp_fsf_req_dismiss_all - dismiss all fsf requests | |
126 | * @adapter: pointer to struct zfcp_adapter | |
127 | * | |
869b2b44 MP |
128 | * Never ever call this without shutting down the adapter first. |
129 | * Otherwise the adapter would continue using and corrupting s390 storage. | |
130 | * Included BUG_ON() call to ensure this is done. | |
131 | * ERP is supposed to be the only user of this function. | |
1da177e4 | 132 | */ |
6fcc4711 | 133 | void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter) |
1da177e4 | 134 | { |
c41f8cbd | 135 | struct zfcp_fsf_req *req, *tmp; |
fea9d6c7 | 136 | unsigned long flags; |
6fcc4711 | 137 | LIST_HEAD(remove_queue); |
869b2b44 | 138 | unsigned int i; |
fea9d6c7 | 139 | |
c41f8cbd | 140 | BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP); |
fea9d6c7 | 141 | spin_lock_irqsave(&adapter->req_list_lock, flags); |
869b2b44 | 142 | for (i = 0; i < REQUEST_LIST_SIZE; i++) |
6fcc4711 | 143 | list_splice_init(&adapter->req_list[i], &remove_queue); |
fea9d6c7 VS |
144 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); |
145 | ||
c41f8cbd SS |
146 | list_for_each_entry_safe(req, tmp, &remove_queue, list) { |
147 | list_del(&req->list); | |
148 | req->status |= ZFCP_STATUS_FSFREQ_DISMISSED; | |
149 | zfcp_fsf_req_complete(req); | |
1da177e4 | 150 | } |
1da177e4 LT |
151 | } |
152 | ||
c41f8cbd | 153 | static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req) |
1da177e4 | 154 | { |
c41f8cbd SS |
155 | struct fsf_status_read_buffer *sr_buf = req->data; |
156 | struct zfcp_adapter *adapter = req->adapter; | |
157 | struct zfcp_port *port; | |
158 | int d_id = sr_buf->d_id & ZFCP_DID_MASK; | |
159 | unsigned long flags; | |
1da177e4 | 160 | |
c41f8cbd SS |
161 | read_lock_irqsave(&zfcp_data.config_lock, flags); |
162 | list_for_each_entry(port, &adapter->port_list_head, list) | |
163 | if (port->d_id == d_id) { | |
164 | read_unlock_irqrestore(&zfcp_data.config_lock, flags); | |
165 | switch (sr_buf->status_subtype) { | |
166 | case FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT: | |
167 | zfcp_erp_port_reopen(port, 0, 101, req); | |
168 | break; | |
169 | case FSF_STATUS_READ_SUB_ERROR_PORT: | |
170 | zfcp_erp_port_shutdown(port, 0, 122, req); | |
171 | break; | |
172 | } | |
173 | return; | |
174 | } | |
175 | read_unlock_irqrestore(&zfcp_data.config_lock, flags); | |
1da177e4 LT |
176 | } |
177 | ||
c41f8cbd SS |
178 | static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, u8 id, |
179 | struct fsf_link_down_info *link_down) | |
aef4a983 | 180 | { |
c41f8cbd | 181 | struct zfcp_adapter *adapter = req->adapter; |
698ec016 | 182 | |
c41f8cbd | 183 | if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED) |
ee69ab7a MS |
184 | return; |
185 | ||
186 | atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status); | |
187 | ||
c41f8cbd | 188 | if (!link_down) |
2f8f3ed5 | 189 | goto out; |
ee69ab7a | 190 | |
aef4a983 MS |
191 | switch (link_down->error_code) { |
192 | case FSF_PSQ_LINK_NO_LIGHT: | |
c41f8cbd | 193 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
194 | "There is no light signal from the local " |
195 | "fibre channel cable\n"); | |
aef4a983 MS |
196 | break; |
197 | case FSF_PSQ_LINK_WRAP_PLUG: | |
c41f8cbd | 198 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
199 | "There is a wrap plug instead of a fibre " |
200 | "channel cable\n"); | |
aef4a983 MS |
201 | break; |
202 | case FSF_PSQ_LINK_NO_FCP: | |
c41f8cbd | 203 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
204 | "The adjacent fibre channel node does not " |
205 | "support FCP\n"); | |
aef4a983 MS |
206 | break; |
207 | case FSF_PSQ_LINK_FIRMWARE_UPDATE: | |
c41f8cbd | 208 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
209 | "The FCP device is suspended because of a " |
210 | "firmware update\n"); | |
553448f6 | 211 | break; |
aef4a983 | 212 | case FSF_PSQ_LINK_INVALID_WWPN: |
c41f8cbd | 213 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
214 | "The FCP device detected a WWPN that is " |
215 | "duplicate or not valid\n"); | |
aef4a983 MS |
216 | break; |
217 | case FSF_PSQ_LINK_NO_NPIV_SUPPORT: | |
c41f8cbd | 218 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 219 | "The fibre channel fabric does not support NPIV\n"); |
aef4a983 MS |
220 | break; |
221 | case FSF_PSQ_LINK_NO_FCP_RESOURCES: | |
c41f8cbd | 222 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 223 | "The FCP adapter cannot support more NPIV ports\n"); |
aef4a983 MS |
224 | break; |
225 | case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: | |
c41f8cbd | 226 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
227 | "The adjacent switch cannot support " |
228 | "more NPIV ports\n"); | |
aef4a983 MS |
229 | break; |
230 | case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: | |
c41f8cbd | 231 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
232 | "The FCP adapter could not log in to the " |
233 | "fibre channel fabric\n"); | |
aef4a983 MS |
234 | break; |
235 | case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: | |
c41f8cbd | 236 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
237 | "The WWPN assignment file on the FCP adapter " |
238 | "has been damaged\n"); | |
aef4a983 MS |
239 | break; |
240 | case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: | |
c41f8cbd | 241 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
242 | "The mode table on the FCP adapter " |
243 | "has been damaged\n"); | |
aef4a983 MS |
244 | break; |
245 | case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: | |
c41f8cbd | 246 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
247 | "All NPIV ports on the FCP adapter have " |
248 | "been assigned\n"); | |
aef4a983 MS |
249 | break; |
250 | default: | |
c41f8cbd | 251 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
252 | "The link between the FCP adapter and " |
253 | "the FC fabric is down\n"); | |
aef4a983 | 254 | } |
c41f8cbd SS |
255 | out: |
256 | zfcp_erp_adapter_failed(adapter, id, req); | |
aef4a983 MS |
257 | } |
258 | ||
c41f8cbd | 259 | static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req) |
1da177e4 | 260 | { |
c41f8cbd SS |
261 | struct fsf_status_read_buffer *sr_buf = req->data; |
262 | struct fsf_link_down_info *ldi = | |
263 | (struct fsf_link_down_info *) &sr_buf->payload; | |
1da177e4 | 264 | |
c41f8cbd SS |
265 | switch (sr_buf->status_subtype) { |
266 | case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: | |
c41f8cbd | 267 | zfcp_fsf_link_down_info_eval(req, 38, ldi); |
1da177e4 | 268 | break; |
c41f8cbd | 269 | case FSF_STATUS_READ_SUB_FDISC_FAILED: |
c41f8cbd | 270 | zfcp_fsf_link_down_info_eval(req, 39, ldi); |
1da177e4 | 271 | break; |
c41f8cbd | 272 | case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE: |
c41f8cbd SS |
273 | zfcp_fsf_link_down_info_eval(req, 40, NULL); |
274 | }; | |
275 | } | |
1da177e4 | 276 | |
c41f8cbd SS |
277 | static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) |
278 | { | |
279 | struct zfcp_adapter *adapter = req->adapter; | |
280 | struct fsf_status_read_buffer *sr_buf = req->data; | |
1da177e4 | 281 | |
c41f8cbd SS |
282 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
283 | zfcp_hba_dbf_event_fsf_unsol("dism", adapter, sr_buf); | |
284 | mempool_free(sr_buf, adapter->pool.data_status_read); | |
285 | zfcp_fsf_req_free(req); | |
286 | return; | |
287 | } | |
1da177e4 | 288 | |
c41f8cbd | 289 | zfcp_hba_dbf_event_fsf_unsol("read", adapter, sr_buf); |
1da177e4 | 290 | |
c41f8cbd SS |
291 | switch (sr_buf->status_type) { |
292 | case FSF_STATUS_READ_PORT_CLOSED: | |
293 | zfcp_fsf_status_read_port_closed(req); | |
1da177e4 | 294 | break; |
c41f8cbd SS |
295 | case FSF_STATUS_READ_INCOMING_ELS: |
296 | zfcp_fc_incoming_els(req); | |
1da177e4 | 297 | break; |
c41f8cbd | 298 | case FSF_STATUS_READ_SENSE_DATA_AVAIL: |
1da177e4 | 299 | break; |
c41f8cbd | 300 | case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: |
ff3b24fa CS |
301 | dev_warn(&adapter->ccw_device->dev, |
302 | "The error threshold for checksum statistics " | |
303 | "has been exceeded\n"); | |
57069386 | 304 | zfcp_hba_dbf_event_berr(adapter, req); |
1da177e4 | 305 | break; |
c41f8cbd SS |
306 | case FSF_STATUS_READ_LINK_DOWN: |
307 | zfcp_fsf_status_read_link_down(req); | |
308 | break; | |
309 | case FSF_STATUS_READ_LINK_UP: | |
310 | dev_info(&adapter->ccw_device->dev, | |
ff3b24fa | 311 | "The local link has been restored\n"); |
c41f8cbd SS |
312 | /* All ports should be marked as ready to run again */ |
313 | zfcp_erp_modify_adapter_status(adapter, 30, NULL, | |
314 | ZFCP_STATUS_COMMON_RUNNING, | |
315 | ZFCP_SET); | |
316 | zfcp_erp_adapter_reopen(adapter, | |
317 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
318 | ZFCP_STATUS_COMMON_ERP_FAILED, | |
319 | 102, req); | |
320 | break; | |
321 | case FSF_STATUS_READ_NOTIFICATION_LOST: | |
322 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED) | |
323 | zfcp_erp_adapter_access_changed(adapter, 135, req); | |
324 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS) | |
325 | schedule_work(&adapter->scan_work); | |
326 | break; | |
327 | case FSF_STATUS_READ_CFDC_UPDATED: | |
328 | zfcp_erp_adapter_access_changed(adapter, 136, req); | |
329 | break; | |
330 | case FSF_STATUS_READ_FEATURE_UPDATE_ALERT: | |
331 | adapter->adapter_features = sr_buf->payload.word[0]; | |
1da177e4 | 332 | break; |
1da177e4 LT |
333 | } |
334 | ||
c41f8cbd SS |
335 | mempool_free(sr_buf, adapter->pool.data_status_read); |
336 | zfcp_fsf_req_free(req); | |
1da177e4 | 337 | |
c41f8cbd | 338 | atomic_inc(&adapter->stat_miss); |
b7f15f3c | 339 | queue_work(zfcp_data.work_queue, &adapter->stat_work); |
c41f8cbd | 340 | } |
1da177e4 | 341 | |
c41f8cbd SS |
342 | static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req) |
343 | { | |
344 | switch (req->qtcb->header.fsf_status_qual.word[0]) { | |
345 | case FSF_SQ_FCP_RSP_AVAILABLE: | |
346 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
347 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
348 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
349 | return; | |
350 | case FSF_SQ_COMMAND_ABORTED: | |
351 | req->status |= ZFCP_STATUS_FSFREQ_ABORTED; | |
352 | break; | |
353 | case FSF_SQ_NO_RECOM: | |
354 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
355 | "The FCP adapter reported a problem " |
356 | "that cannot be recovered\n"); | |
c41f8cbd SS |
357 | zfcp_erp_adapter_shutdown(req->adapter, 0, 121, req); |
358 | break; | |
359 | } | |
360 | /* all non-return stats set FSFREQ_ERROR*/ | |
361 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
362 | } |
363 | ||
c41f8cbd | 364 | static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req) |
1da177e4 | 365 | { |
c41f8cbd SS |
366 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
367 | return; | |
1da177e4 | 368 | |
c41f8cbd SS |
369 | switch (req->qtcb->header.fsf_status) { |
370 | case FSF_UNKNOWN_COMMAND: | |
371 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa | 372 | "The FCP adapter does not recognize the command 0x%x\n", |
c41f8cbd SS |
373 | req->qtcb->header.fsf_command); |
374 | zfcp_erp_adapter_shutdown(req->adapter, 0, 120, req); | |
375 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
376 | break; | |
377 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
378 | zfcp_fsf_fsfstatus_qual_eval(req); | |
379 | break; | |
380 | } | |
381 | } | |
1da177e4 | 382 | |
c41f8cbd SS |
383 | static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) |
384 | { | |
385 | struct zfcp_adapter *adapter = req->adapter; | |
386 | struct fsf_qtcb *qtcb = req->qtcb; | |
387 | union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual; | |
1da177e4 | 388 | |
c41f8cbd | 389 | zfcp_hba_dbf_event_fsf_response(req); |
1da177e4 | 390 | |
c41f8cbd SS |
391 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
392 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
393 | ZFCP_STATUS_FSFREQ_RETRY; /* only for SCSI cmnds. */ | |
394 | return; | |
395 | } | |
1da177e4 | 396 | |
c41f8cbd SS |
397 | switch (qtcb->prefix.prot_status) { |
398 | case FSF_PROT_GOOD: | |
399 | case FSF_PROT_FSF_STATUS_PRESENTED: | |
400 | return; | |
401 | case FSF_PROT_QTCB_VERSION_ERROR: | |
402 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
403 | "QTCB version 0x%x not supported by FCP adapter " |
404 | "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION, | |
405 | psq->word[0], psq->word[1]); | |
c41f8cbd SS |
406 | zfcp_erp_adapter_shutdown(adapter, 0, 117, req); |
407 | break; | |
408 | case FSF_PROT_ERROR_STATE: | |
409 | case FSF_PROT_SEQ_NUMB_ERROR: | |
410 | zfcp_erp_adapter_reopen(adapter, 0, 98, req); | |
411 | req->status |= ZFCP_STATUS_FSFREQ_RETRY; | |
412 | break; | |
413 | case FSF_PROT_UNSUPP_QTCB_TYPE: | |
414 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 415 | "The QTCB type is not supported by the FCP adapter\n"); |
c41f8cbd SS |
416 | zfcp_erp_adapter_shutdown(adapter, 0, 118, req); |
417 | break; | |
418 | case FSF_PROT_HOST_CONNECTION_INITIALIZING: | |
419 | atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT, | |
420 | &adapter->status); | |
421 | break; | |
422 | case FSF_PROT_DUPLICATE_REQUEST_ID: | |
423 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 424 | "0x%Lx is an ambiguous request identifier\n", |
c41f8cbd SS |
425 | (unsigned long long)qtcb->bottom.support.req_handle); |
426 | zfcp_erp_adapter_shutdown(adapter, 0, 78, req); | |
427 | break; | |
428 | case FSF_PROT_LINK_DOWN: | |
429 | zfcp_fsf_link_down_info_eval(req, 37, &psq->link_down_info); | |
430 | /* FIXME: reopening adapter now? better wait for link up */ | |
431 | zfcp_erp_adapter_reopen(adapter, 0, 79, req); | |
432 | break; | |
433 | case FSF_PROT_REEST_QUEUE: | |
434 | /* All ports should be marked as ready to run again */ | |
435 | zfcp_erp_modify_adapter_status(adapter, 28, NULL, | |
436 | ZFCP_STATUS_COMMON_RUNNING, | |
437 | ZFCP_SET); | |
438 | zfcp_erp_adapter_reopen(adapter, | |
439 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
440 | ZFCP_STATUS_COMMON_ERP_FAILED, 99, req); | |
441 | break; | |
442 | default: | |
443 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 444 | "0x%x is not a valid transfer protocol status\n", |
c41f8cbd SS |
445 | qtcb->prefix.prot_status); |
446 | zfcp_erp_adapter_shutdown(adapter, 0, 119, req); | |
447 | } | |
448 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
449 | } |
450 | ||
c41f8cbd SS |
451 | /** |
452 | * zfcp_fsf_req_complete - process completion of a FSF request | |
453 | * @fsf_req: The FSF request that has been completed. | |
454 | * | |
455 | * When a request has been completed either from the FCP adapter, | |
456 | * or it has been dismissed due to a queue shutdown, this function | |
457 | * is called to process the completion status and trigger further | |
458 | * events related to the FSF request. | |
459 | */ | |
460 | void zfcp_fsf_req_complete(struct zfcp_fsf_req *req) | |
1da177e4 | 461 | { |
c41f8cbd SS |
462 | if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) { |
463 | zfcp_fsf_status_read_handler(req); | |
464 | return; | |
465 | } | |
1da177e4 | 466 | |
c41f8cbd SS |
467 | del_timer(&req->timer); |
468 | zfcp_fsf_protstatus_eval(req); | |
469 | zfcp_fsf_fsfstatus_eval(req); | |
470 | req->handler(req); | |
1da177e4 | 471 | |
c41f8cbd | 472 | if (req->erp_action) |
287ac01a | 473 | zfcp_erp_notify(req->erp_action, 0); |
c41f8cbd | 474 | req->status |= ZFCP_STATUS_FSFREQ_COMPLETED; |
1da177e4 | 475 | |
c41f8cbd SS |
476 | if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP)) |
477 | zfcp_fsf_req_free(req); | |
478 | else | |
479 | /* notify initiator waiting for the requests completion */ | |
480 | /* | |
481 | * FIXME: Race! We must not access fsf_req here as it might have been | |
482 | * cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED | |
483 | * flag. It's an improbable case. But, we have the same paranoia for | |
484 | * the cleanup flag already. | |
485 | * Might better be handled using complete()? | |
486 | * (setting the flag and doing wakeup ought to be atomic | |
487 | * with regard to checking the flag as long as waitqueue is | |
488 | * part of the to be released structure) | |
489 | */ | |
490 | wake_up(&req->completion_wq); | |
491 | } | |
1da177e4 | 492 | |
c41f8cbd SS |
493 | static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req) |
494 | { | |
495 | struct fsf_qtcb_bottom_config *bottom; | |
496 | struct zfcp_adapter *adapter = req->adapter; | |
497 | struct Scsi_Host *shost = adapter->scsi_host; | |
1da177e4 | 498 | |
c41f8cbd | 499 | bottom = &req->qtcb->bottom.config; |
1da177e4 | 500 | |
c41f8cbd SS |
501 | if (req->data) |
502 | memcpy(req->data, bottom, sizeof(*bottom)); | |
503 | ||
504 | fc_host_node_name(shost) = bottom->nport_serv_param.wwnn; | |
505 | fc_host_port_name(shost) = bottom->nport_serv_param.wwpn; | |
506 | fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK; | |
507 | fc_host_speed(shost) = bottom->fc_link_speed; | |
508 | fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3; | |
509 | ||
510 | adapter->hydra_version = bottom->adapter_type; | |
511 | adapter->timer_ticks = bottom->timer_interval; | |
512 | ||
513 | if (fc_host_permanent_port_name(shost) == -1) | |
514 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
515 | ||
516 | switch (bottom->fc_topology) { | |
517 | case FSF_TOPO_P2P: | |
518 | adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK; | |
519 | adapter->peer_wwpn = bottom->plogi_payload.wwpn; | |
520 | adapter->peer_wwnn = bottom->plogi_payload.wwnn; | |
521 | fc_host_port_type(shost) = FC_PORTTYPE_PTP; | |
c41f8cbd SS |
522 | break; |
523 | case FSF_TOPO_FABRIC: | |
524 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
c41f8cbd SS |
525 | break; |
526 | case FSF_TOPO_AL: | |
527 | fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; | |
c41f8cbd | 528 | default: |
c41f8cbd | 529 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
530 | "Unknown or unsupported arbitrated loop " |
531 | "fibre channel topology detected\n"); | |
532 | zfcp_erp_adapter_shutdown(adapter, 0, 127, req); | |
c41f8cbd | 533 | return -EIO; |
1da177e4 | 534 | } |
c41f8cbd | 535 | |
1da177e4 LT |
536 | return 0; |
537 | } | |
538 | ||
c41f8cbd | 539 | static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) |
553448f6 CS |
540 | { |
541 | struct zfcp_adapter *adapter = req->adapter; | |
c41f8cbd SS |
542 | struct fsf_qtcb *qtcb = req->qtcb; |
543 | struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config; | |
544 | struct Scsi_Host *shost = adapter->scsi_host; | |
553448f6 | 545 | |
c41f8cbd SS |
546 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
547 | return; | |
1da177e4 | 548 | |
c41f8cbd SS |
549 | adapter->fsf_lic_version = bottom->lic_version; |
550 | adapter->adapter_features = bottom->adapter_features; | |
551 | adapter->connection_features = bottom->connection_features; | |
552 | adapter->peer_wwpn = 0; | |
553 | adapter->peer_wwnn = 0; | |
554 | adapter->peer_d_id = 0; | |
8a36e453 | 555 | |
c41f8cbd SS |
556 | switch (qtcb->header.fsf_status) { |
557 | case FSF_GOOD: | |
558 | if (zfcp_fsf_exchange_config_evaluate(req)) | |
559 | return; | |
1da177e4 | 560 | |
c41f8cbd SS |
561 | if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { |
562 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
563 | "FCP adapter maximum QTCB size (%d bytes) " |
564 | "is too small\n", | |
565 | bottom->max_qtcb_size); | |
c41f8cbd SS |
566 | zfcp_erp_adapter_shutdown(adapter, 0, 129, req); |
567 | return; | |
568 | } | |
569 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, | |
570 | &adapter->status); | |
1da177e4 | 571 | break; |
c41f8cbd SS |
572 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
573 | fc_host_node_name(shost) = 0; | |
574 | fc_host_port_name(shost) = 0; | |
575 | fc_host_port_id(shost) = 0; | |
576 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; | |
577 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; | |
578 | adapter->hydra_version = 0; | |
1da177e4 | 579 | |
c41f8cbd SS |
580 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, |
581 | &adapter->status); | |
1da177e4 | 582 | |
c41f8cbd SS |
583 | zfcp_fsf_link_down_info_eval(req, 42, |
584 | &qtcb->header.fsf_status_qual.link_down_info); | |
1da177e4 | 585 | break; |
c41f8cbd SS |
586 | default: |
587 | zfcp_erp_adapter_shutdown(adapter, 0, 130, req); | |
588 | return; | |
589 | } | |
1da177e4 | 590 | |
c41f8cbd SS |
591 | if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) { |
592 | adapter->hardware_version = bottom->hardware_version; | |
593 | memcpy(fc_host_serial_number(shost), bottom->serial_number, | |
594 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
595 | EBCASC(fc_host_serial_number(shost), | |
596 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
597 | } | |
1da177e4 | 598 | |
c41f8cbd SS |
599 | if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) { |
600 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
601 | "The FCP adapter only supports newer " |
602 | "control block versions\n"); | |
c41f8cbd SS |
603 | zfcp_erp_adapter_shutdown(adapter, 0, 125, req); |
604 | return; | |
605 | } | |
606 | if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) { | |
607 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
608 | "The FCP adapter only supports older " |
609 | "control block versions\n"); | |
c41f8cbd SS |
610 | zfcp_erp_adapter_shutdown(adapter, 0, 126, req); |
611 | } | |
612 | } | |
1da177e4 | 613 | |
c41f8cbd SS |
614 | static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req) |
615 | { | |
616 | struct zfcp_adapter *adapter = req->adapter; | |
617 | struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port; | |
618 | struct Scsi_Host *shost = adapter->scsi_host; | |
1da177e4 | 619 | |
c41f8cbd SS |
620 | if (req->data) |
621 | memcpy(req->data, bottom, sizeof(*bottom)); | |
9eb69aff | 622 | |
c41f8cbd SS |
623 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) |
624 | fc_host_permanent_port_name(shost) = bottom->wwpn; | |
625 | else | |
626 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
627 | fc_host_maxframe_size(shost) = bottom->maximum_frame_size; | |
628 | fc_host_supported_speeds(shost) = bottom->supported_speed; | |
629 | } | |
1da177e4 | 630 | |
c41f8cbd SS |
631 | static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) |
632 | { | |
c41f8cbd SS |
633 | struct fsf_qtcb *qtcb = req->qtcb; |
634 | ||
635 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
636 | return; | |
637 | ||
638 | switch (qtcb->header.fsf_status) { | |
639 | case FSF_GOOD: | |
640 | zfcp_fsf_exchange_port_evaluate(req); | |
c41f8cbd SS |
641 | break; |
642 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: | |
643 | zfcp_fsf_exchange_port_evaluate(req); | |
c41f8cbd SS |
644 | zfcp_fsf_link_down_info_eval(req, 43, |
645 | &qtcb->header.fsf_status_qual.link_down_info); | |
aef4a983 | 646 | break; |
1da177e4 | 647 | } |
c41f8cbd | 648 | } |
d26ab06e | 649 | |
dedbc2b3 | 650 | static int zfcp_fsf_sbal_available(struct zfcp_adapter *adapter) |
c41f8cbd | 651 | { |
dedbc2b3 | 652 | if (atomic_read(&adapter->req_q.count) > 0) |
c41f8cbd | 653 | return 1; |
dedbc2b3 | 654 | atomic_inc(&adapter->qdio_outb_full); |
c41f8cbd | 655 | return 0; |
1da177e4 LT |
656 | } |
657 | ||
c41f8cbd | 658 | static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter) |
dedbc2b3 CS |
659 | __releases(&adapter->req_q_lock) |
660 | __acquires(&adapter->req_q_lock) | |
c41f8cbd | 661 | { |
dedbc2b3 | 662 | struct zfcp_qdio_queue *req_q = &adapter->req_q; |
c41f8cbd | 663 | long ret; |
c41f8cbd | 664 | |
dedbc2b3 CS |
665 | if (atomic_read(&req_q->count) <= -REQUEST_LIST_SIZE) |
666 | return -EIO; | |
667 | if (atomic_read(&req_q->count) > 0) | |
668 | return 0; | |
669 | ||
670 | atomic_dec(&req_q->count); | |
0406289e | 671 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 672 | ret = wait_event_interruptible_timeout(adapter->request_wq, |
dedbc2b3 CS |
673 | atomic_read(&req_q->count) >= 0, |
674 | 5 * HZ); | |
675 | spin_lock_bh(&adapter->req_q_lock); | |
676 | atomic_inc(&req_q->count); | |
677 | ||
c41f8cbd SS |
678 | if (ret > 0) |
679 | return 0; | |
2450d3e7 SR |
680 | if (!ret) |
681 | atomic_inc(&adapter->qdio_outb_full); | |
c41f8cbd SS |
682 | return -EIO; |
683 | } | |
684 | ||
685 | static struct zfcp_fsf_req *zfcp_fsf_alloc_noqtcb(mempool_t *pool) | |
686 | { | |
687 | struct zfcp_fsf_req *req; | |
688 | req = mempool_alloc(pool, GFP_ATOMIC); | |
689 | if (!req) | |
690 | return NULL; | |
691 | memset(req, 0, sizeof(*req)); | |
88f2a977 | 692 | req->pool = pool; |
c41f8cbd SS |
693 | return req; |
694 | } | |
695 | ||
696 | static struct zfcp_fsf_req *zfcp_fsf_alloc_qtcb(mempool_t *pool) | |
697 | { | |
698 | struct zfcp_fsf_req_qtcb *qtcb; | |
699 | ||
700 | if (likely(pool)) | |
701 | qtcb = mempool_alloc(pool, GFP_ATOMIC); | |
702 | else | |
703 | qtcb = kmem_cache_alloc(zfcp_data.fsf_req_qtcb_cache, | |
704 | GFP_ATOMIC); | |
705 | if (unlikely(!qtcb)) | |
706 | return NULL; | |
707 | ||
708 | memset(qtcb, 0, sizeof(*qtcb)); | |
709 | qtcb->fsf_req.qtcb = &qtcb->qtcb; | |
710 | qtcb->fsf_req.pool = pool; | |
711 | ||
712 | return &qtcb->fsf_req; | |
713 | } | |
714 | ||
715 | static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter, | |
716 | u32 fsf_cmd, int req_flags, | |
717 | mempool_t *pool) | |
1da177e4 | 718 | { |
44cc76f2 | 719 | struct qdio_buffer_element *sbale; |
1da177e4 | 720 | |
c41f8cbd SS |
721 | struct zfcp_fsf_req *req; |
722 | struct zfcp_qdio_queue *req_q = &adapter->req_q; | |
951f746f | 723 | |
c41f8cbd SS |
724 | if (req_flags & ZFCP_REQ_NO_QTCB) |
725 | req = zfcp_fsf_alloc_noqtcb(pool); | |
726 | else | |
727 | req = zfcp_fsf_alloc_qtcb(pool); | |
1da177e4 | 728 | |
c41f8cbd SS |
729 | if (unlikely(!req)) |
730 | return ERR_PTR(-EIO); | |
1da177e4 | 731 | |
c41f8cbd SS |
732 | if (adapter->req_no == 0) |
733 | adapter->req_no++; | |
1da177e4 | 734 | |
c41f8cbd SS |
735 | INIT_LIST_HEAD(&req->list); |
736 | init_timer(&req->timer); | |
737 | init_waitqueue_head(&req->completion_wq); | |
1da177e4 | 738 | |
c41f8cbd SS |
739 | req->adapter = adapter; |
740 | req->fsf_command = fsf_cmd; | |
52bfb558 | 741 | req->req_id = adapter->req_no; |
c41f8cbd SS |
742 | req->sbal_number = 1; |
743 | req->sbal_first = req_q->first; | |
744 | req->sbal_last = req_q->first; | |
745 | req->sbale_curr = 1; | |
746 | ||
747 | sbale = zfcp_qdio_sbale_req(req); | |
748 | sbale[0].addr = (void *) req->req_id; | |
749 | sbale[0].flags |= SBAL_FLAGS0_COMMAND; | |
750 | ||
751 | if (likely(req->qtcb)) { | |
752 | req->qtcb->prefix.req_seq_no = req->adapter->fsf_req_seq_no; | |
753 | req->qtcb->prefix.req_id = req->req_id; | |
754 | req->qtcb->prefix.ulp_info = 26; | |
755 | req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command]; | |
756 | req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION; | |
757 | req->qtcb->header.req_handle = req->req_id; | |
758 | req->qtcb->header.fsf_command = req->fsf_command; | |
759 | req->seq_no = adapter->fsf_req_seq_no; | |
760 | req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; | |
761 | sbale[1].addr = (void *) req->qtcb; | |
762 | sbale[1].length = sizeof(struct fsf_qtcb); | |
763 | } | |
764 | ||
765 | if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) { | |
766 | zfcp_fsf_req_free(req); | |
767 | return ERR_PTR(-EIO); | |
768 | } | |
951f746f | 769 | |
c41f8cbd SS |
770 | if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP)) |
771 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; | |
1da177e4 | 772 | |
c41f8cbd | 773 | return req; |
1da177e4 LT |
774 | } |
775 | ||
c41f8cbd SS |
776 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) |
777 | { | |
778 | struct zfcp_adapter *adapter = req->adapter; | |
45316a86 | 779 | unsigned long flags; |
c41f8cbd SS |
780 | int idx; |
781 | ||
782 | /* put allocated FSF request into hash table */ | |
45316a86 | 783 | spin_lock_irqsave(&adapter->req_list_lock, flags); |
c41f8cbd SS |
784 | idx = zfcp_reqlist_hash(req->req_id); |
785 | list_add_tail(&req->list, &adapter->req_list[idx]); | |
45316a86 | 786 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); |
c41f8cbd | 787 | |
3765138a | 788 | req->qdio_outb_usage = atomic_read(&adapter->req_q.count); |
c41f8cbd SS |
789 | req->issued = get_clock(); |
790 | if (zfcp_qdio_send(req)) { | |
c41f8cbd | 791 | del_timer(&req->timer); |
3765138a CS |
792 | spin_lock_irqsave(&adapter->req_list_lock, flags); |
793 | /* lookup request again, list might have changed */ | |
794 | if (zfcp_reqlist_find_safe(adapter, req)) | |
795 | zfcp_reqlist_remove(adapter, req); | |
796 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); | |
c41f8cbd SS |
797 | zfcp_erp_adapter_reopen(adapter, 0, 116, req); |
798 | return -EIO; | |
799 | } | |
800 | ||
801 | /* Don't increase for unsolicited status */ | |
802 | if (req->qtcb) | |
803 | adapter->fsf_req_seq_no++; | |
52bfb558 | 804 | adapter->req_no++; |
c41f8cbd SS |
805 | |
806 | return 0; | |
807 | } | |
808 | ||
809 | /** | |
810 | * zfcp_fsf_status_read - send status read request | |
811 | * @adapter: pointer to struct zfcp_adapter | |
812 | * @req_flags: request flags | |
813 | * Returns: 0 on success, ERROR otherwise | |
1da177e4 | 814 | */ |
c41f8cbd | 815 | int zfcp_fsf_status_read(struct zfcp_adapter *adapter) |
1da177e4 | 816 | { |
c41f8cbd SS |
817 | struct zfcp_fsf_req *req; |
818 | struct fsf_status_read_buffer *sr_buf; | |
44cc76f2 | 819 | struct qdio_buffer_element *sbale; |
c41f8cbd | 820 | int retval = -EIO; |
1da177e4 | 821 | |
0406289e | 822 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
823 | if (zfcp_fsf_req_sbal_get(adapter)) |
824 | goto out; | |
825 | ||
826 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS, | |
827 | ZFCP_REQ_NO_QTCB, | |
828 | adapter->pool.fsf_req_status_read); | |
025270f0 | 829 | if (IS_ERR(req)) { |
c41f8cbd SS |
830 | retval = PTR_ERR(req); |
831 | goto out; | |
1da177e4 LT |
832 | } |
833 | ||
c41f8cbd SS |
834 | sbale = zfcp_qdio_sbale_req(req); |
835 | sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS; | |
836 | sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY; | |
837 | req->sbale_curr = 2; | |
838 | ||
839 | sr_buf = mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC); | |
840 | if (!sr_buf) { | |
841 | retval = -ENOMEM; | |
842 | goto failed_buf; | |
843 | } | |
844 | memset(sr_buf, 0, sizeof(*sr_buf)); | |
845 | req->data = sr_buf; | |
846 | sbale = zfcp_qdio_sbale_curr(req); | |
847 | sbale->addr = (void *) sr_buf; | |
848 | sbale->length = sizeof(*sr_buf); | |
059c97d0 | 849 | |
c41f8cbd SS |
850 | retval = zfcp_fsf_req_send(req); |
851 | if (retval) | |
852 | goto failed_req_send; | |
1da177e4 | 853 | |
c41f8cbd SS |
854 | goto out; |
855 | ||
856 | failed_req_send: | |
857 | mempool_free(sr_buf, adapter->pool.data_status_read); | |
858 | failed_buf: | |
859 | zfcp_fsf_req_free(req); | |
860 | zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL); | |
861 | out: | |
0406289e | 862 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
863 | return retval; |
864 | } | |
865 | ||
866 | static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req) | |
867 | { | |
868 | struct zfcp_unit *unit = req->data; | |
869 | union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual; | |
870 | ||
871 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
872 | return; | |
873 | ||
874 | switch (req->qtcb->header.fsf_status) { | |
1da177e4 | 875 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd | 876 | if (fsq->word[0] == fsq->word[1]) { |
9467a9b3 | 877 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 104, |
c41f8cbd SS |
878 | req); |
879 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
880 | } |
881 | break; | |
1da177e4 | 882 | case FSF_LUN_HANDLE_NOT_VALID: |
c41f8cbd SS |
883 | if (fsq->word[0] == fsq->word[1]) { |
884 | zfcp_erp_port_reopen(unit->port, 0, 105, req); | |
885 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
886 | } |
887 | break; | |
1da177e4 | 888 | case FSF_FCP_COMMAND_DOES_NOT_EXIST: |
c41f8cbd | 889 | req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED; |
1da177e4 | 890 | break; |
1da177e4 | 891 | case FSF_PORT_BOXED: |
c41f8cbd SS |
892 | zfcp_erp_port_boxed(unit->port, 47, req); |
893 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
894 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 895 | break; |
1da177e4 | 896 | case FSF_LUN_BOXED: |
c41f8cbd SS |
897 | zfcp_erp_unit_boxed(unit, 48, req); |
898 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
899 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 900 | break; |
1da177e4 | 901 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 902 | switch (fsq->word[0]) { |
1da177e4 | 903 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
65a8d4e1 | 904 | zfcp_test_link(unit->port); |
1da177e4 | 905 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 906 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 907 | break; |
1da177e4 LT |
908 | } |
909 | break; | |
1da177e4 | 910 | case FSF_GOOD: |
c41f8cbd | 911 | req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED; |
1da177e4 | 912 | break; |
1da177e4 | 913 | } |
1da177e4 LT |
914 | } |
915 | ||
916 | /** | |
c41f8cbd SS |
917 | * zfcp_fsf_abort_fcp_command - abort running SCSI command |
918 | * @old_req_id: unsigned long | |
c41f8cbd | 919 | * @unit: pointer to struct zfcp_unit |
c41f8cbd | 920 | * Returns: pointer to struct zfcp_fsf_req |
1da177e4 | 921 | */ |
1da177e4 | 922 | |
c41f8cbd | 923 | struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id, |
63caf367 | 924 | struct zfcp_unit *unit) |
1da177e4 | 925 | { |
44cc76f2 | 926 | struct qdio_buffer_element *sbale; |
c41f8cbd | 927 | struct zfcp_fsf_req *req = NULL; |
63caf367 | 928 | struct zfcp_adapter *adapter = unit->port->adapter; |
8a36e453 | 929 | |
92cab0d9 CS |
930 | spin_lock_bh(&adapter->req_q_lock); |
931 | if (zfcp_fsf_req_sbal_get(adapter)) | |
c41f8cbd SS |
932 | goto out; |
933 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND, | |
63caf367 | 934 | 0, adapter->pool.fsf_req_abort); |
633528c3 SS |
935 | if (IS_ERR(req)) { |
936 | req = NULL; | |
c41f8cbd | 937 | goto out; |
633528c3 | 938 | } |
2abbe866 | 939 | |
c41f8cbd SS |
940 | if (unlikely(!(atomic_read(&unit->status) & |
941 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
942 | goto out_error_free; | |
1da177e4 | 943 | |
c41f8cbd SS |
944 | sbale = zfcp_qdio_sbale_req(req); |
945 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
946 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 947 | |
c41f8cbd SS |
948 | req->data = unit; |
949 | req->handler = zfcp_fsf_abort_fcp_command_handler; | |
950 | req->qtcb->header.lun_handle = unit->handle; | |
951 | req->qtcb->header.port_handle = unit->port->handle; | |
952 | req->qtcb->bottom.support.req_handle = (u64) old_req_id; | |
953 | ||
954 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); | |
955 | if (!zfcp_fsf_req_send(req)) | |
956 | goto out; | |
957 | ||
958 | out_error_free: | |
959 | zfcp_fsf_req_free(req); | |
960 | req = NULL; | |
961 | out: | |
92cab0d9 | 962 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 963 | return req; |
1da177e4 LT |
964 | } |
965 | ||
c41f8cbd | 966 | static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) |
1da177e4 | 967 | { |
c41f8cbd SS |
968 | struct zfcp_adapter *adapter = req->adapter; |
969 | struct zfcp_send_ct *send_ct = req->data; | |
c41f8cbd | 970 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1da177e4 | 971 | |
c41f8cbd | 972 | send_ct->status = -EINVAL; |
1da177e4 | 973 | |
c41f8cbd | 974 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
975 | goto skip_fsfstatus; |
976 | ||
1da177e4 | 977 | switch (header->fsf_status) { |
1da177e4 | 978 | case FSF_GOOD: |
c41f8cbd SS |
979 | zfcp_san_dbf_event_ct_response(req); |
980 | send_ct->status = 0; | |
1da177e4 | 981 | break; |
1da177e4 | 982 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 983 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 984 | break; |
1da177e4 | 985 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
986 | switch (header->fsf_status_qual.word[0]){ |
987 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 988 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 989 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 990 | break; |
1da177e4 LT |
991 | } |
992 | break; | |
1da177e4 | 993 | case FSF_ACCESS_DENIED: |
1da177e4 | 994 | break; |
1da177e4 | 995 | case FSF_PORT_BOXED: |
c41f8cbd SS |
996 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
997 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 998 | break; |
c41f8cbd SS |
999 | case FSF_PORT_HANDLE_NOT_VALID: |
1000 | zfcp_erp_adapter_reopen(adapter, 0, 106, req); | |
1001 | case FSF_GENERIC_COMMAND_REJECTED: | |
1da177e4 | 1002 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1003 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1004 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1005 | case FSF_SBAL_MISMATCH: |
c41f8cbd | 1006 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1007 | break; |
1008 | } | |
1009 | ||
1010 | skip_fsfstatus: | |
c41f8cbd | 1011 | if (send_ct->handler) |
1da177e4 | 1012 | send_ct->handler(send_ct->handler_data); |
c41f8cbd | 1013 | } |
1da177e4 | 1014 | |
39eb7e9a CS |
1015 | static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req, |
1016 | struct scatterlist *sg_req, | |
1017 | struct scatterlist *sg_resp, | |
1018 | int max_sbals) | |
c41f8cbd | 1019 | { |
39eb7e9a CS |
1020 | struct qdio_buffer_element *sbale = zfcp_qdio_sbale_req(req); |
1021 | u32 feat = req->adapter->adapter_features; | |
c41f8cbd SS |
1022 | int bytes; |
1023 | ||
39eb7e9a CS |
1024 | if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) { |
1025 | if (sg_req->length > PAGE_SIZE || sg_resp->length > PAGE_SIZE || | |
1026 | !sg_is_last(sg_req) || !sg_is_last(sg_resp)) | |
1027 | return -EOPNOTSUPP; | |
1028 | ||
1029 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ; | |
1030 | sbale[2].addr = sg_virt(sg_req); | |
1031 | sbale[2].length = sg_req->length; | |
1032 | sbale[3].addr = sg_virt(sg_resp); | |
1033 | sbale[3].length = sg_resp->length; | |
1034 | sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1035 | return 0; | |
1036 | } | |
1037 | ||
c41f8cbd SS |
1038 | bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, |
1039 | sg_req, max_sbals); | |
1040 | if (bytes <= 0) | |
1041 | return -ENOMEM; | |
1042 | req->qtcb->bottom.support.req_buf_length = bytes; | |
1043 | req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; | |
1044 | ||
1045 | bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, | |
1046 | sg_resp, max_sbals); | |
1047 | if (bytes <= 0) | |
1048 | return -ENOMEM; | |
1049 | req->qtcb->bottom.support.resp_buf_length = bytes; | |
1050 | ||
1051 | return 0; | |
1da177e4 LT |
1052 | } |
1053 | ||
1054 | /** | |
c41f8cbd SS |
1055 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) |
1056 | * @ct: pointer to struct zfcp_send_ct with data for request | |
1057 | * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req | |
1058 | * @erp_action: if non-null the Generic Service request sent within ERP | |
1da177e4 | 1059 | */ |
c41f8cbd SS |
1060 | int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, |
1061 | struct zfcp_erp_action *erp_action) | |
1da177e4 | 1062 | { |
5ab944f9 SS |
1063 | struct zfcp_wka_port *wka_port = ct->wka_port; |
1064 | struct zfcp_adapter *adapter = wka_port->adapter; | |
c41f8cbd SS |
1065 | struct zfcp_fsf_req *req; |
1066 | int ret = -EIO; | |
1da177e4 | 1067 | |
0406289e | 1068 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1069 | if (zfcp_fsf_req_sbal_get(adapter)) |
1070 | goto out; | |
1da177e4 | 1071 | |
c41f8cbd SS |
1072 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC, |
1073 | ZFCP_REQ_AUTO_CLEANUP, pool); | |
025270f0 | 1074 | if (IS_ERR(req)) { |
c41f8cbd SS |
1075 | ret = PTR_ERR(req); |
1076 | goto out; | |
3f0ca62a CS |
1077 | } |
1078 | ||
39eb7e9a CS |
1079 | ret = zfcp_fsf_setup_ct_els_sbals(req, ct->req, ct->resp, |
1080 | FSF_MAX_SBALS_PER_REQ); | |
553448f6 | 1081 | if (ret) |
1da177e4 | 1082 | goto failed_send; |
1da177e4 | 1083 | |
c41f8cbd | 1084 | req->handler = zfcp_fsf_send_ct_handler; |
5ab944f9 | 1085 | req->qtcb->header.port_handle = wka_port->handle; |
c41f8cbd SS |
1086 | req->qtcb->bottom.support.service_class = FSF_CLASS_3; |
1087 | req->qtcb->bottom.support.timeout = ct->timeout; | |
1088 | req->data = ct; | |
1089 | ||
1090 | zfcp_san_dbf_event_ct_request(req); | |
1091 | ||
1092 | if (erp_action) { | |
1093 | erp_action->fsf_req = req; | |
1094 | req->erp_action = erp_action; | |
287ac01a | 1095 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
1096 | } else |
1097 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1da177e4 | 1098 | |
c41f8cbd SS |
1099 | ret = zfcp_fsf_req_send(req); |
1100 | if (ret) | |
1101 | goto failed_send; | |
1da177e4 | 1102 | |
c41f8cbd | 1103 | goto out; |
1da177e4 | 1104 | |
c41f8cbd SS |
1105 | failed_send: |
1106 | zfcp_fsf_req_free(req); | |
1107 | if (erp_action) | |
1108 | erp_action->fsf_req = NULL; | |
1109 | out: | |
0406289e | 1110 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 1111 | return ret; |
1da177e4 LT |
1112 | } |
1113 | ||
c41f8cbd | 1114 | static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1115 | { |
c41f8cbd SS |
1116 | struct zfcp_send_els *send_els = req->data; |
1117 | struct zfcp_port *port = send_els->port; | |
1118 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1119 | |
c41f8cbd | 1120 | send_els->status = -EINVAL; |
1da177e4 | 1121 | |
c41f8cbd | 1122 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
1123 | goto skip_fsfstatus; |
1124 | ||
1125 | switch (header->fsf_status) { | |
1da177e4 | 1126 | case FSF_GOOD: |
c41f8cbd SS |
1127 | zfcp_san_dbf_event_els_response(req); |
1128 | send_els->status = 0; | |
1da177e4 | 1129 | break; |
1da177e4 | 1130 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 1131 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 1132 | break; |
1da177e4 | 1133 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1134 | switch (header->fsf_status_qual.word[0]){ |
1135 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
64b29a13 AH |
1136 | if (port && (send_els->ls_code != ZFCP_LS_ADISC)) |
1137 | zfcp_test_link(port); | |
c41f8cbd | 1138 | /*fall through */ |
1da177e4 | 1139 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1140 | case FSF_SQ_RETRY_IF_POSSIBLE: |
c41f8cbd | 1141 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1142 | break; |
1da177e4 LT |
1143 | } |
1144 | break; | |
1da177e4 | 1145 | case FSF_ELS_COMMAND_REJECTED: |
1da177e4 | 1146 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1147 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1148 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1149 | break; |
1da177e4 | 1150 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1151 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1152 | break; |
c41f8cbd SS |
1153 | case FSF_SBAL_MISMATCH: |
1154 | /* should never occure, avoided in zfcp_fsf_send_els */ | |
1155 | /* fall through */ | |
1da177e4 | 1156 | default: |
c41f8cbd | 1157 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1158 | break; |
1159 | } | |
1da177e4 | 1160 | skip_fsfstatus: |
aa551daf | 1161 | if (send_els->handler) |
1da177e4 | 1162 | send_els->handler(send_els->handler_data); |
c41f8cbd | 1163 | } |
1da177e4 | 1164 | |
c41f8cbd SS |
1165 | /** |
1166 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) | |
1167 | * @els: pointer to struct zfcp_send_els with data for the command | |
1168 | */ | |
1169 | int zfcp_fsf_send_els(struct zfcp_send_els *els) | |
1170 | { | |
1171 | struct zfcp_fsf_req *req; | |
1172 | struct zfcp_adapter *adapter = els->adapter; | |
1173 | struct fsf_qtcb_bottom_support *bottom; | |
1174 | int ret = -EIO; | |
1175 | ||
1176 | if (unlikely(!(atomic_read(&els->port->status) & | |
1177 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
1178 | return -EBUSY; | |
1179 | ||
0406289e | 1180 | spin_lock(&adapter->req_q_lock); |
2450d3e7 | 1181 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd SS |
1182 | goto out; |
1183 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS, | |
1184 | ZFCP_REQ_AUTO_CLEANUP, NULL); | |
025270f0 | 1185 | if (IS_ERR(req)) { |
c41f8cbd SS |
1186 | ret = PTR_ERR(req); |
1187 | goto out; | |
1188 | } | |
1189 | ||
39eb7e9a | 1190 | ret = zfcp_fsf_setup_ct_els_sbals(req, els->req, els->resp, 2); |
44cc76f2 | 1191 | |
c41f8cbd SS |
1192 | if (ret) |
1193 | goto failed_send; | |
1194 | ||
1195 | bottom = &req->qtcb->bottom.support; | |
1196 | req->handler = zfcp_fsf_send_els_handler; | |
1197 | bottom->d_id = els->d_id; | |
1198 | bottom->service_class = FSF_CLASS_3; | |
1199 | bottom->timeout = 2 * R_A_TOV; | |
1200 | req->data = els; | |
1201 | ||
1202 | zfcp_san_dbf_event_els_request(req); | |
1203 | ||
1204 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1205 | ret = zfcp_fsf_req_send(req); | |
1206 | if (ret) | |
1207 | goto failed_send; | |
1208 | ||
1209 | goto out; | |
1210 | ||
1211 | failed_send: | |
1212 | zfcp_fsf_req_free(req); | |
1213 | out: | |
0406289e | 1214 | spin_unlock(&adapter->req_q_lock); |
c41f8cbd | 1215 | return ret; |
1da177e4 LT |
1216 | } |
1217 | ||
c41f8cbd | 1218 | int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1219 | { |
44cc76f2 | 1220 | struct qdio_buffer_element *sbale; |
c41f8cbd | 1221 | struct zfcp_fsf_req *req; |
52ef11a7 | 1222 | struct zfcp_adapter *adapter = erp_action->adapter; |
c41f8cbd SS |
1223 | int retval = -EIO; |
1224 | ||
0406289e | 1225 | spin_lock_bh(&adapter->req_q_lock); |
92cab0d9 | 1226 | if (zfcp_fsf_req_sbal_get(adapter)) |
c41f8cbd SS |
1227 | goto out; |
1228 | req = zfcp_fsf_req_create(adapter, | |
1229 | FSF_QTCB_EXCHANGE_CONFIG_DATA, | |
1230 | ZFCP_REQ_AUTO_CLEANUP, | |
1231 | adapter->pool.fsf_req_erp); | |
025270f0 | 1232 | if (IS_ERR(req)) { |
c41f8cbd SS |
1233 | retval = PTR_ERR(req); |
1234 | goto out; | |
1da177e4 LT |
1235 | } |
1236 | ||
c41f8cbd | 1237 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1238 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1239 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1240 | |
c41f8cbd | 1241 | req->qtcb->bottom.config.feature_selection = |
aef4a983 MS |
1242 | FSF_FEATURE_CFDC | |
1243 | FSF_FEATURE_LUN_SHARING | | |
9eb69aff | 1244 | FSF_FEATURE_NOTIFICATION_LOST | |
aef4a983 | 1245 | FSF_FEATURE_UPDATE_ALERT; |
c41f8cbd SS |
1246 | req->erp_action = erp_action; |
1247 | req->handler = zfcp_fsf_exchange_config_data_handler; | |
1248 | erp_action->fsf_req = req; | |
1da177e4 | 1249 | |
287ac01a | 1250 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1251 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1252 | if (retval) { |
c41f8cbd | 1253 | zfcp_fsf_req_free(req); |
1da177e4 | 1254 | erp_action->fsf_req = NULL; |
1da177e4 | 1255 | } |
c41f8cbd | 1256 | out: |
0406289e | 1257 | spin_unlock_bh(&adapter->req_q_lock); |
52ef11a7 SS |
1258 | return retval; |
1259 | } | |
1da177e4 | 1260 | |
c41f8cbd SS |
1261 | int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter, |
1262 | struct fsf_qtcb_bottom_config *data) | |
52ef11a7 | 1263 | { |
44cc76f2 | 1264 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1265 | struct zfcp_fsf_req *req = NULL; |
1266 | int retval = -EIO; | |
1267 | ||
0406289e | 1268 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1269 | if (zfcp_fsf_req_sbal_get(adapter)) |
1270 | goto out; | |
1271 | ||
1272 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA, | |
1273 | 0, NULL); | |
025270f0 | 1274 | if (IS_ERR(req)) { |
c41f8cbd SS |
1275 | retval = PTR_ERR(req); |
1276 | goto out; | |
52ef11a7 SS |
1277 | } |
1278 | ||
c41f8cbd | 1279 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1280 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1281 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
c41f8cbd | 1282 | req->handler = zfcp_fsf_exchange_config_data_handler; |
52ef11a7 | 1283 | |
c41f8cbd | 1284 | req->qtcb->bottom.config.feature_selection = |
52ef11a7 SS |
1285 | FSF_FEATURE_CFDC | |
1286 | FSF_FEATURE_LUN_SHARING | | |
1287 | FSF_FEATURE_NOTIFICATION_LOST | | |
1288 | FSF_FEATURE_UPDATE_ALERT; | |
1289 | ||
1290 | if (data) | |
c41f8cbd | 1291 | req->data = data; |
52ef11a7 | 1292 | |
c41f8cbd SS |
1293 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
1294 | retval = zfcp_fsf_req_send(req); | |
1295 | out: | |
0406289e | 1296 | spin_unlock_bh(&adapter->req_q_lock); |
553448f6 | 1297 | if (!retval) |
c41f8cbd SS |
1298 | wait_event(req->completion_wq, |
1299 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
52ef11a7 | 1300 | |
c41f8cbd | 1301 | zfcp_fsf_req_free(req); |
52ef11a7 | 1302 | |
1da177e4 LT |
1303 | return retval; |
1304 | } | |
1305 | ||
1da177e4 LT |
1306 | /** |
1307 | * zfcp_fsf_exchange_port_data - request information about local port | |
aef4a983 | 1308 | * @erp_action: ERP action for the adapter for which port data is requested |
c41f8cbd | 1309 | * Returns: 0 on success, error otherwise |
1da177e4 | 1310 | */ |
c41f8cbd | 1311 | int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1312 | { |
44cc76f2 | 1313 | struct qdio_buffer_element *sbale; |
c41f8cbd | 1314 | struct zfcp_fsf_req *req; |
52ef11a7 | 1315 | struct zfcp_adapter *adapter = erp_action->adapter; |
c41f8cbd | 1316 | int retval = -EIO; |
1da177e4 | 1317 | |
553448f6 | 1318 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1319 | return -EOPNOTSUPP; |
1da177e4 | 1320 | |
0406289e | 1321 | spin_lock_bh(&adapter->req_q_lock); |
92cab0d9 | 1322 | if (zfcp_fsf_req_sbal_get(adapter)) |
c41f8cbd SS |
1323 | goto out; |
1324 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, | |
1325 | ZFCP_REQ_AUTO_CLEANUP, | |
1326 | adapter->pool.fsf_req_erp); | |
025270f0 | 1327 | if (IS_ERR(req)) { |
c41f8cbd SS |
1328 | retval = PTR_ERR(req); |
1329 | goto out; | |
aef4a983 MS |
1330 | } |
1331 | ||
c41f8cbd | 1332 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1333 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1334 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1335 | |
c41f8cbd SS |
1336 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1337 | req->erp_action = erp_action; | |
1338 | erp_action->fsf_req = req; | |
52ef11a7 | 1339 | |
287ac01a | 1340 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1341 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1342 | if (retval) { |
c41f8cbd | 1343 | zfcp_fsf_req_free(req); |
52ef11a7 SS |
1344 | erp_action->fsf_req = NULL; |
1345 | } | |
c41f8cbd | 1346 | out: |
0406289e | 1347 | spin_unlock_bh(&adapter->req_q_lock); |
52ef11a7 SS |
1348 | return retval; |
1349 | } | |
1350 | ||
52ef11a7 SS |
1351 | /** |
1352 | * zfcp_fsf_exchange_port_data_sync - request information about local port | |
c41f8cbd SS |
1353 | * @adapter: pointer to struct zfcp_adapter |
1354 | * @data: pointer to struct fsf_qtcb_bottom_port | |
1355 | * Returns: 0 on success, error otherwise | |
52ef11a7 | 1356 | */ |
c41f8cbd SS |
1357 | int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, |
1358 | struct fsf_qtcb_bottom_port *data) | |
52ef11a7 | 1359 | { |
44cc76f2 | 1360 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1361 | struct zfcp_fsf_req *req = NULL; |
1362 | int retval = -EIO; | |
52ef11a7 | 1363 | |
553448f6 | 1364 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1365 | return -EOPNOTSUPP; |
52ef11a7 | 1366 | |
0406289e | 1367 | spin_lock_bh(&adapter->req_q_lock); |
92cab0d9 | 1368 | if (zfcp_fsf_req_sbal_get(adapter)) |
c41f8cbd SS |
1369 | goto out; |
1370 | ||
1371 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, 0, | |
1372 | NULL); | |
025270f0 | 1373 | if (IS_ERR(req)) { |
c41f8cbd SS |
1374 | retval = PTR_ERR(req); |
1375 | goto out; | |
1da177e4 LT |
1376 | } |
1377 | ||
52ef11a7 | 1378 | if (data) |
c41f8cbd | 1379 | req->data = data; |
52ef11a7 | 1380 | |
c41f8cbd | 1381 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1382 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1383 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1384 | ||
c41f8cbd SS |
1385 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1386 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1387 | retval = zfcp_fsf_req_send(req); | |
1388 | out: | |
0406289e | 1389 | spin_unlock_bh(&adapter->req_q_lock); |
553448f6 | 1390 | if (!retval) |
c41f8cbd SS |
1391 | wait_event(req->completion_wq, |
1392 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
1393 | zfcp_fsf_req_free(req); | |
1da177e4 | 1394 | |
1da177e4 LT |
1395 | return retval; |
1396 | } | |
1397 | ||
c41f8cbd | 1398 | static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1399 | { |
c41f8cbd SS |
1400 | struct zfcp_port *port = req->data; |
1401 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1402 | struct fsf_plogi *plogi; |
1da177e4 | 1403 | |
c41f8cbd | 1404 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1405 | return; |
1da177e4 | 1406 | |
1da177e4 | 1407 | switch (header->fsf_status) { |
1da177e4 | 1408 | case FSF_PORT_ALREADY_OPEN: |
1da177e4 | 1409 | break; |
1da177e4 | 1410 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1411 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1412 | break; |
1da177e4 | 1413 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: |
c41f8cbd | 1414 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 1415 | "Not enough FCP adapter resources to open " |
7ba58c9c SS |
1416 | "remote port 0x%016Lx\n", |
1417 | (unsigned long long)port->wwpn); | |
c41f8cbd SS |
1418 | zfcp_erp_port_failed(port, 31, req); |
1419 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1420 | break; |
1da177e4 | 1421 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1422 | switch (header->fsf_status_qual.word[0]) { |
1423 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1424 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1425 | case FSF_SQ_NO_RETRY_POSSIBLE: |
c41f8cbd | 1426 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1427 | break; |
1428 | } | |
1429 | break; | |
1da177e4 | 1430 | case FSF_GOOD: |
1da177e4 | 1431 | port->handle = header->port_handle; |
1da177e4 LT |
1432 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN | |
1433 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
d736a27b AH |
1434 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
1435 | ZFCP_STATUS_COMMON_ACCESS_BOXED, | |
1436 | &port->status); | |
1da177e4 LT |
1437 | /* check whether D_ID has changed during open */ |
1438 | /* | |
1439 | * FIXME: This check is not airtight, as the FCP channel does | |
1440 | * not monitor closures of target port connections caused on | |
1441 | * the remote side. Thus, they might miss out on invalidating | |
1442 | * locally cached WWPNs (and other N_Port parameters) of gone | |
1443 | * target ports. So, our heroic attempt to make things safe | |
1444 | * could be undermined by 'open port' response data tagged with | |
1445 | * obsolete WWPNs. Another reason to monitor potential | |
1446 | * connection closures ourself at least (by interpreting | |
1447 | * incoming ELS' and unsolicited status). It just crosses my | |
1448 | * mind that one should be able to cross-check by means of | |
1449 | * another GID_PN straight after a port has been opened. | |
1450 | * Alternately, an ADISC/PDISC ELS should suffice, as well. | |
1451 | */ | |
c41f8cbd | 1452 | plogi = (struct fsf_plogi *) req->qtcb->bottom.support.els; |
39eb7e9a CS |
1453 | if (req->qtcb->bottom.support.els1_length >= |
1454 | FSF_PLOGI_MIN_LEN) { | |
c41f8cbd | 1455 | if (plogi->serv_param.wwpn != port->wwpn) |
b98478d7 | 1456 | port->d_id = 0; |
c41f8cbd SS |
1457 | else { |
1458 | port->wwnn = plogi->serv_param.wwnn; | |
1459 | zfcp_fc_plogi_evaluate(port, plogi); | |
1da177e4 LT |
1460 | } |
1461 | } | |
1462 | break; | |
1da177e4 | 1463 | case FSF_UNKNOWN_OP_SUBTYPE: |
c41f8cbd | 1464 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1465 | break; |
1466 | } | |
1da177e4 LT |
1467 | } |
1468 | ||
c41f8cbd SS |
1469 | /** |
1470 | * zfcp_fsf_open_port - create and send open port request | |
1471 | * @erp_action: pointer to struct zfcp_erp_action | |
1472 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1473 | */ |
c41f8cbd | 1474 | int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1475 | { |
44cc76f2 | 1476 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1477 | struct zfcp_adapter *adapter = erp_action->adapter; |
1478 | struct zfcp_fsf_req *req; | |
1479 | int retval = -EIO; | |
1480 | ||
0406289e | 1481 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1482 | if (zfcp_fsf_req_sbal_get(adapter)) |
1483 | goto out; | |
1484 | ||
1485 | req = zfcp_fsf_req_create(adapter, | |
1486 | FSF_QTCB_OPEN_PORT_WITH_DID, | |
1487 | ZFCP_REQ_AUTO_CLEANUP, | |
1488 | adapter->pool.fsf_req_erp); | |
025270f0 | 1489 | if (IS_ERR(req)) { |
c41f8cbd | 1490 | retval = PTR_ERR(req); |
1da177e4 | 1491 | goto out; |
c41f8cbd | 1492 | } |
1da177e4 | 1493 | |
c41f8cbd | 1494 | sbale = zfcp_qdio_sbale_req(req); |
1da177e4 LT |
1495 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1496 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1497 | ||
c41f8cbd SS |
1498 | req->handler = zfcp_fsf_open_port_handler; |
1499 | req->qtcb->bottom.support.d_id = erp_action->port->d_id; | |
1500 | req->data = erp_action->port; | |
1501 | req->erp_action = erp_action; | |
1502 | erp_action->fsf_req = req; | |
c41f8cbd | 1503 | |
287ac01a | 1504 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1505 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1506 | if (retval) { |
c41f8cbd | 1507 | zfcp_fsf_req_free(req); |
1da177e4 | 1508 | erp_action->fsf_req = NULL; |
1da177e4 | 1509 | } |
c41f8cbd | 1510 | out: |
0406289e | 1511 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1512 | return retval; |
1513 | } | |
1514 | ||
c41f8cbd | 1515 | static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1516 | { |
c41f8cbd | 1517 | struct zfcp_port *port = req->data; |
1da177e4 | 1518 | |
c41f8cbd | 1519 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1520 | return; |
1da177e4 | 1521 | |
c41f8cbd | 1522 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1523 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd SS |
1524 | zfcp_erp_adapter_reopen(port->adapter, 0, 107, req); |
1525 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1526 | break; |
1da177e4 | 1527 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 | 1528 | break; |
1da177e4 | 1529 | case FSF_GOOD: |
c41f8cbd | 1530 | zfcp_erp_modify_port_status(port, 33, req, |
1da177e4 LT |
1531 | ZFCP_STATUS_COMMON_OPEN, |
1532 | ZFCP_CLEAR); | |
1da177e4 | 1533 | break; |
1da177e4 | 1534 | } |
1da177e4 LT |
1535 | } |
1536 | ||
c41f8cbd SS |
1537 | /** |
1538 | * zfcp_fsf_close_port - create and send close port request | |
1539 | * @erp_action: pointer to struct zfcp_erp_action | |
1540 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1541 | */ |
c41f8cbd | 1542 | int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1543 | { |
44cc76f2 | 1544 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1545 | struct zfcp_adapter *adapter = erp_action->adapter; |
1546 | struct zfcp_fsf_req *req; | |
1547 | int retval = -EIO; | |
1548 | ||
0406289e | 1549 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1550 | if (zfcp_fsf_req_sbal_get(adapter)) |
1551 | goto out; | |
1552 | ||
1553 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT, | |
1554 | ZFCP_REQ_AUTO_CLEANUP, | |
1555 | adapter->pool.fsf_req_erp); | |
025270f0 | 1556 | if (IS_ERR(req)) { |
c41f8cbd | 1557 | retval = PTR_ERR(req); |
1da177e4 | 1558 | goto out; |
c41f8cbd | 1559 | } |
1da177e4 | 1560 | |
c41f8cbd | 1561 | sbale = zfcp_qdio_sbale_req(req); |
1da177e4 LT |
1562 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1563 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1564 | ||
c41f8cbd SS |
1565 | req->handler = zfcp_fsf_close_port_handler; |
1566 | req->data = erp_action->port; | |
1567 | req->erp_action = erp_action; | |
1568 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1569 | erp_action->fsf_req = req; | |
c41f8cbd | 1570 | |
287ac01a | 1571 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1572 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1573 | if (retval) { |
c41f8cbd | 1574 | zfcp_fsf_req_free(req); |
1da177e4 | 1575 | erp_action->fsf_req = NULL; |
1da177e4 | 1576 | } |
c41f8cbd | 1577 | out: |
0406289e | 1578 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1579 | return retval; |
1580 | } | |
1581 | ||
5ab944f9 SS |
1582 | static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req) |
1583 | { | |
1584 | struct zfcp_wka_port *wka_port = req->data; | |
1585 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1586 | ||
1587 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
1588 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1589 | goto out; | |
1590 | } | |
1591 | ||
1592 | switch (header->fsf_status) { | |
1593 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: | |
1594 | dev_warn(&req->adapter->ccw_device->dev, | |
1595 | "Opening WKA port 0x%x failed\n", wka_port->d_id); | |
1596 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1597 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1598 | case FSF_ACCESS_DENIED: | |
1599 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1600 | break; | |
1601 | case FSF_PORT_ALREADY_OPEN: | |
1c1cba17 | 1602 | break; |
5ab944f9 SS |
1603 | case FSF_GOOD: |
1604 | wka_port->handle = header->port_handle; | |
1605 | wka_port->status = ZFCP_WKA_PORT_ONLINE; | |
1606 | } | |
1607 | out: | |
1608 | wake_up(&wka_port->completion_wq); | |
1609 | } | |
1610 | ||
1611 | /** | |
1612 | * zfcp_fsf_open_wka_port - create and send open wka-port request | |
1613 | * @wka_port: pointer to struct zfcp_wka_port | |
1614 | * Returns: 0 on success, error otherwise | |
1615 | */ | |
1616 | int zfcp_fsf_open_wka_port(struct zfcp_wka_port *wka_port) | |
1617 | { | |
1618 | struct qdio_buffer_element *sbale; | |
1619 | struct zfcp_adapter *adapter = wka_port->adapter; | |
1620 | struct zfcp_fsf_req *req; | |
1621 | int retval = -EIO; | |
1622 | ||
0406289e | 1623 | spin_lock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1624 | if (zfcp_fsf_req_sbal_get(adapter)) |
1625 | goto out; | |
1626 | ||
1627 | req = zfcp_fsf_req_create(adapter, | |
1628 | FSF_QTCB_OPEN_PORT_WITH_DID, | |
1629 | ZFCP_REQ_AUTO_CLEANUP, | |
1630 | adapter->pool.fsf_req_erp); | |
1631 | if (unlikely(IS_ERR(req))) { | |
1632 | retval = PTR_ERR(req); | |
1633 | goto out; | |
1634 | } | |
1635 | ||
1636 | sbale = zfcp_qdio_sbale_req(req); | |
1637 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1638 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1639 | ||
1640 | req->handler = zfcp_fsf_open_wka_port_handler; | |
1641 | req->qtcb->bottom.support.d_id = wka_port->d_id; | |
1642 | req->data = wka_port; | |
1643 | ||
1644 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1645 | retval = zfcp_fsf_req_send(req); | |
1646 | if (retval) | |
1647 | zfcp_fsf_req_free(req); | |
1648 | out: | |
0406289e | 1649 | spin_unlock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1650 | return retval; |
1651 | } | |
1652 | ||
1653 | static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req) | |
1654 | { | |
1655 | struct zfcp_wka_port *wka_port = req->data; | |
1656 | ||
1657 | if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) { | |
1658 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
41bfcf90 | 1659 | zfcp_erp_adapter_reopen(wka_port->adapter, 0, 84, req); |
5ab944f9 SS |
1660 | } |
1661 | ||
1662 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1663 | wake_up(&wka_port->completion_wq); | |
1664 | } | |
1665 | ||
1666 | /** | |
1667 | * zfcp_fsf_close_wka_port - create and send close wka port request | |
1668 | * @erp_action: pointer to struct zfcp_erp_action | |
1669 | * Returns: 0 on success, error otherwise | |
1670 | */ | |
1671 | int zfcp_fsf_close_wka_port(struct zfcp_wka_port *wka_port) | |
1672 | { | |
1673 | struct qdio_buffer_element *sbale; | |
1674 | struct zfcp_adapter *adapter = wka_port->adapter; | |
1675 | struct zfcp_fsf_req *req; | |
1676 | int retval = -EIO; | |
1677 | ||
0406289e | 1678 | spin_lock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1679 | if (zfcp_fsf_req_sbal_get(adapter)) |
1680 | goto out; | |
1681 | ||
1682 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT, | |
1683 | ZFCP_REQ_AUTO_CLEANUP, | |
1684 | adapter->pool.fsf_req_erp); | |
1685 | if (unlikely(IS_ERR(req))) { | |
1686 | retval = PTR_ERR(req); | |
1687 | goto out; | |
1688 | } | |
1689 | ||
1690 | sbale = zfcp_qdio_sbale_req(req); | |
1691 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1692 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1693 | ||
1694 | req->handler = zfcp_fsf_close_wka_port_handler; | |
1695 | req->data = wka_port; | |
1696 | req->qtcb->header.port_handle = wka_port->handle; | |
1697 | ||
1698 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1699 | retval = zfcp_fsf_req_send(req); | |
1700 | if (retval) | |
1701 | zfcp_fsf_req_free(req); | |
1702 | out: | |
0406289e | 1703 | spin_unlock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1704 | return retval; |
1705 | } | |
1706 | ||
c41f8cbd | 1707 | static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1708 | { |
c41f8cbd SS |
1709 | struct zfcp_port *port = req->data; |
1710 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1711 | struct zfcp_unit *unit; |
1da177e4 | 1712 | |
c41f8cbd | 1713 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
a5b11dda | 1714 | return; |
1da177e4 | 1715 | |
1da177e4 | 1716 | switch (header->fsf_status) { |
1da177e4 | 1717 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd SS |
1718 | zfcp_erp_adapter_reopen(port->adapter, 0, 108, req); |
1719 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1720 | break; |
1da177e4 | 1721 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1722 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1723 | break; |
1da177e4 | 1724 | case FSF_PORT_BOXED: |
c41f8cbd SS |
1725 | zfcp_erp_port_boxed(port, 50, req); |
1726 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
1727 | ZFCP_STATUS_FSFREQ_RETRY; | |
5c815d15 CS |
1728 | /* can't use generic zfcp_erp_modify_port_status because |
1729 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */ | |
1730 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
1731 | list_for_each_entry(unit, &port->unit_list_head, list) | |
1732 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, | |
1733 | &unit->status); | |
1da177e4 | 1734 | break; |
1da177e4 | 1735 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1736 | switch (header->fsf_status_qual.word[0]) { |
1737 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
c41f8cbd | 1738 | /* fall through */ |
1da177e4 | 1739 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1740 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1741 | break; |
1da177e4 LT |
1742 | } |
1743 | break; | |
1da177e4 | 1744 | case FSF_GOOD: |
1da177e4 LT |
1745 | /* can't use generic zfcp_erp_modify_port_status because |
1746 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port | |
1747 | */ | |
1748 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
1749 | list_for_each_entry(unit, &port->unit_list_head, list) | |
c41f8cbd SS |
1750 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, |
1751 | &unit->status); | |
1da177e4 | 1752 | break; |
1da177e4 | 1753 | } |
1da177e4 LT |
1754 | } |
1755 | ||
c41f8cbd SS |
1756 | /** |
1757 | * zfcp_fsf_close_physical_port - close physical port | |
1758 | * @erp_action: pointer to struct zfcp_erp_action | |
1759 | * Returns: 0 on success | |
1da177e4 | 1760 | */ |
c41f8cbd | 1761 | int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1762 | { |
44cc76f2 | 1763 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1764 | struct zfcp_adapter *adapter = erp_action->adapter; |
1765 | struct zfcp_fsf_req *req; | |
1766 | int retval = -EIO; | |
1767 | ||
0406289e | 1768 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 1769 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 1770 | goto out; |
1da177e4 | 1771 | |
c41f8cbd SS |
1772 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PHYSICAL_PORT, |
1773 | ZFCP_REQ_AUTO_CLEANUP, | |
1774 | adapter->pool.fsf_req_erp); | |
025270f0 | 1775 | if (IS_ERR(req)) { |
c41f8cbd SS |
1776 | retval = PTR_ERR(req); |
1777 | goto out; | |
1778 | } | |
1da177e4 | 1779 | |
c41f8cbd SS |
1780 | sbale = zfcp_qdio_sbale_req(req); |
1781 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1782 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1783 | |
c41f8cbd SS |
1784 | req->data = erp_action->port; |
1785 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1786 | req->erp_action = erp_action; | |
1787 | req->handler = zfcp_fsf_close_physical_port_handler; | |
1788 | erp_action->fsf_req = req; | |
c41f8cbd | 1789 | |
287ac01a | 1790 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1791 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1792 | if (retval) { |
c41f8cbd | 1793 | zfcp_fsf_req_free(req); |
1da177e4 | 1794 | erp_action->fsf_req = NULL; |
1da177e4 | 1795 | } |
c41f8cbd | 1796 | out: |
0406289e | 1797 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1798 | return retval; |
1799 | } | |
1800 | ||
c41f8cbd | 1801 | static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1802 | { |
c41f8cbd SS |
1803 | struct zfcp_adapter *adapter = req->adapter; |
1804 | struct zfcp_unit *unit = req->data; | |
1805 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1806 | struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support; | |
1807 | struct fsf_queue_designator *queue_designator = | |
1808 | &header->fsf_status_qual.fsf_queue_designator; | |
aef4a983 | 1809 | int exclusive, readwrite; |
1da177e4 | 1810 | |
c41f8cbd | 1811 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1812 | return; |
1da177e4 | 1813 | |
1da177e4 | 1814 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
b64ddf96 | 1815 | ZFCP_STATUS_COMMON_ACCESS_BOXED | |
1da177e4 LT |
1816 | ZFCP_STATUS_UNIT_SHARED | |
1817 | ZFCP_STATUS_UNIT_READONLY, | |
1818 | &unit->status); | |
1819 | ||
1da177e4 LT |
1820 | switch (header->fsf_status) { |
1821 | ||
1822 | case FSF_PORT_HANDLE_NOT_VALID: | |
c41f8cbd SS |
1823 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 109, req); |
1824 | /* fall through */ | |
1da177e4 | 1825 | case FSF_LUN_ALREADY_OPEN: |
1da177e4 | 1826 | break; |
1da177e4 | 1827 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1828 | zfcp_fsf_access_denied_unit(req, unit); |
1da177e4 | 1829 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
553448f6 | 1830 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); |
1da177e4 | 1831 | break; |
1da177e4 | 1832 | case FSF_PORT_BOXED: |
c41f8cbd SS |
1833 | zfcp_erp_port_boxed(unit->port, 51, req); |
1834 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
1835 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 1836 | break; |
1da177e4 | 1837 | case FSF_LUN_SHARING_VIOLATION: |
c41f8cbd | 1838 | if (header->fsf_status_qual.word[0]) |
553448f6 | 1839 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1840 | "LUN 0x%Lx on port 0x%Lx is already in " |
1841 | "use by CSS%d, MIF Image ID %x\n", | |
7ba58c9c SS |
1842 | (unsigned long long)unit->fcp_lun, |
1843 | (unsigned long long)unit->port->wwpn, | |
ff3b24fa CS |
1844 | queue_designator->cssid, |
1845 | queue_designator->hla); | |
c41f8cbd | 1846 | else |
553448f6 CS |
1847 | zfcp_act_eval_err(adapter, |
1848 | header->fsf_status_qual.word[2]); | |
c41f8cbd | 1849 | zfcp_erp_unit_access_denied(unit, 60, req); |
1da177e4 LT |
1850 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
1851 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); | |
c41f8cbd | 1852 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1853 | break; |
1da177e4 | 1854 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: |
c41f8cbd | 1855 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1856 | "No handle is available for LUN " |
1857 | "0x%016Lx on port 0x%016Lx\n", | |
7ba58c9c SS |
1858 | (unsigned long long)unit->fcp_lun, |
1859 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
1860 | zfcp_erp_unit_failed(unit, 34, req); |
1861 | /* fall through */ | |
1862 | case FSF_INVALID_COMMAND_OPTION: | |
1863 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1864 | break; |
1da177e4 | 1865 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1866 | switch (header->fsf_status_qual.word[0]) { |
1867 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
65a8d4e1 | 1868 | zfcp_test_link(unit->port); |
c41f8cbd | 1869 | /* fall through */ |
1da177e4 | 1870 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1871 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1872 | break; |
1da177e4 LT |
1873 | } |
1874 | break; | |
1875 | ||
1da177e4 | 1876 | case FSF_GOOD: |
1da177e4 | 1877 | unit->handle = header->lun_handle; |
1da177e4 | 1878 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
aef4a983 MS |
1879 | |
1880 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) && | |
1881 | (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) && | |
1882 | (adapter->ccw_device->id.dev_model != ZFCP_DEVICE_MODEL_PRIV)) { | |
1883 | exclusive = (bottom->lun_access_info & | |
1884 | FSF_UNIT_ACCESS_EXCLUSIVE); | |
1885 | readwrite = (bottom->lun_access_info & | |
1886 | FSF_UNIT_ACCESS_OUTBOUND_TRANSFER); | |
1887 | ||
1da177e4 LT |
1888 | if (!exclusive) |
1889 | atomic_set_mask(ZFCP_STATUS_UNIT_SHARED, | |
1890 | &unit->status); | |
1891 | ||
1892 | if (!readwrite) { | |
1893 | atomic_set_mask(ZFCP_STATUS_UNIT_READONLY, | |
1894 | &unit->status); | |
c41f8cbd | 1895 | dev_info(&adapter->ccw_device->dev, |
ff3b24fa CS |
1896 | "SCSI device at LUN 0x%016Lx on port " |
1897 | "0x%016Lx opened read-only\n", | |
7ba58c9c SS |
1898 | (unsigned long long)unit->fcp_lun, |
1899 | (unsigned long long)unit->port->wwpn); | |
1da177e4 LT |
1900 | } |
1901 | ||
1902 | if (exclusive && !readwrite) { | |
c41f8cbd | 1903 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
1904 | "Exclusive read-only access not " |
1905 | "supported (unit 0x%016Lx, " | |
1906 | "port 0x%016Lx)\n", | |
7ba58c9c SS |
1907 | (unsigned long long)unit->fcp_lun, |
1908 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
1909 | zfcp_erp_unit_failed(unit, 35, req); |
1910 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1911 | zfcp_erp_unit_shutdown(unit, 0, 80, req); | |
1da177e4 | 1912 | } else if (!exclusive && readwrite) { |
c41f8cbd | 1913 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
1914 | "Shared read-write access not " |
1915 | "supported (unit 0x%016Lx, port " | |
27c3f0a6 | 1916 | "0x%016Lx)\n", |
7ba58c9c SS |
1917 | (unsigned long long)unit->fcp_lun, |
1918 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
1919 | zfcp_erp_unit_failed(unit, 36, req); |
1920 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1921 | zfcp_erp_unit_shutdown(unit, 0, 81, req); | |
1da177e4 LT |
1922 | } |
1923 | } | |
1da177e4 | 1924 | break; |
1da177e4 | 1925 | } |
1da177e4 LT |
1926 | } |
1927 | ||
c41f8cbd SS |
1928 | /** |
1929 | * zfcp_fsf_open_unit - open unit | |
1930 | * @erp_action: pointer to struct zfcp_erp_action | |
1931 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1932 | */ |
c41f8cbd | 1933 | int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) |
1da177e4 | 1934 | { |
44cc76f2 | 1935 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1936 | struct zfcp_adapter *adapter = erp_action->adapter; |
1937 | struct zfcp_fsf_req *req; | |
1938 | int retval = -EIO; | |
1939 | ||
0406289e | 1940 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 1941 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 1942 | goto out; |
1da177e4 | 1943 | |
c41f8cbd SS |
1944 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_OPEN_LUN, |
1945 | ZFCP_REQ_AUTO_CLEANUP, | |
1946 | adapter->pool.fsf_req_erp); | |
025270f0 | 1947 | if (IS_ERR(req)) { |
c41f8cbd SS |
1948 | retval = PTR_ERR(req); |
1949 | goto out; | |
1950 | } | |
1951 | ||
1952 | sbale = zfcp_qdio_sbale_req(req); | |
1da177e4 LT |
1953 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1954 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1955 | ||
c41f8cbd SS |
1956 | req->qtcb->header.port_handle = erp_action->port->handle; |
1957 | req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun; | |
1958 | req->handler = zfcp_fsf_open_unit_handler; | |
1959 | req->data = erp_action->unit; | |
1960 | req->erp_action = erp_action; | |
1961 | erp_action->fsf_req = req; | |
1962 | ||
1963 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) | |
1964 | req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING; | |
1965 | ||
287ac01a | 1966 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1967 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1968 | if (retval) { |
c41f8cbd | 1969 | zfcp_fsf_req_free(req); |
1da177e4 | 1970 | erp_action->fsf_req = NULL; |
1da177e4 | 1971 | } |
c41f8cbd | 1972 | out: |
0406289e | 1973 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1974 | return retval; |
1975 | } | |
1976 | ||
c41f8cbd | 1977 | static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1978 | { |
c41f8cbd | 1979 | struct zfcp_unit *unit = req->data; |
1da177e4 | 1980 | |
c41f8cbd | 1981 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1982 | return; |
1da177e4 | 1983 | |
c41f8cbd | 1984 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1985 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd SS |
1986 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 110, req); |
1987 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1988 | break; |
1da177e4 | 1989 | case FSF_LUN_HANDLE_NOT_VALID: |
c41f8cbd SS |
1990 | zfcp_erp_port_reopen(unit->port, 0, 111, req); |
1991 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1992 | break; |
1da177e4 | 1993 | case FSF_PORT_BOXED: |
c41f8cbd SS |
1994 | zfcp_erp_port_boxed(unit->port, 52, req); |
1995 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
1996 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 1997 | break; |
1da177e4 | 1998 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 1999 | switch (req->qtcb->header.fsf_status_qual.word[0]) { |
1da177e4 | 2000 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
65a8d4e1 | 2001 | zfcp_test_link(unit->port); |
c41f8cbd | 2002 | /* fall through */ |
1da177e4 | 2003 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 2004 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
2005 | break; |
2006 | } | |
2007 | break; | |
1da177e4 | 2008 | case FSF_GOOD: |
1da177e4 | 2009 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
1da177e4 | 2010 | break; |
1da177e4 | 2011 | } |
1da177e4 LT |
2012 | } |
2013 | ||
2014 | /** | |
c41f8cbd SS |
2015 | * zfcp_fsf_close_unit - close zfcp unit |
2016 | * @erp_action: pointer to struct zfcp_unit | |
2017 | * Returns: 0 on success, error otherwise | |
1da177e4 | 2018 | */ |
c41f8cbd | 2019 | int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) |
1da177e4 | 2020 | { |
44cc76f2 | 2021 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2022 | struct zfcp_adapter *adapter = erp_action->adapter; |
2023 | struct zfcp_fsf_req *req; | |
2024 | int retval = -EIO; | |
1da177e4 | 2025 | |
0406289e | 2026 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 2027 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 2028 | goto out; |
c41f8cbd SS |
2029 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_LUN, |
2030 | ZFCP_REQ_AUTO_CLEANUP, | |
2031 | adapter->pool.fsf_req_erp); | |
025270f0 | 2032 | if (IS_ERR(req)) { |
c41f8cbd SS |
2033 | retval = PTR_ERR(req); |
2034 | goto out; | |
2035 | } | |
1da177e4 | 2036 | |
c41f8cbd SS |
2037 | sbale = zfcp_qdio_sbale_req(req); |
2038 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1da177e4 LT |
2039 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; |
2040 | ||
c41f8cbd SS |
2041 | req->qtcb->header.port_handle = erp_action->port->handle; |
2042 | req->qtcb->header.lun_handle = erp_action->unit->handle; | |
2043 | req->handler = zfcp_fsf_close_unit_handler; | |
2044 | req->data = erp_action->unit; | |
2045 | req->erp_action = erp_action; | |
2046 | erp_action->fsf_req = req; | |
fdf23452 | 2047 | |
287ac01a | 2048 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
2049 | retval = zfcp_fsf_req_send(req); |
2050 | if (retval) { | |
2051 | zfcp_fsf_req_free(req); | |
2052 | erp_action->fsf_req = NULL; | |
2053 | } | |
2054 | out: | |
0406289e | 2055 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 2056 | return retval; |
1da177e4 LT |
2057 | } |
2058 | ||
c9615858 CS |
2059 | static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat) |
2060 | { | |
2061 | lat_rec->sum += lat; | |
c41f8cbd SS |
2062 | lat_rec->min = min(lat_rec->min, lat); |
2063 | lat_rec->max = max(lat_rec->max, lat); | |
c9615858 CS |
2064 | } |
2065 | ||
c41f8cbd | 2066 | static void zfcp_fsf_req_latency(struct zfcp_fsf_req *req) |
c9615858 CS |
2067 | { |
2068 | struct fsf_qual_latency_info *lat_inf; | |
2069 | struct latency_cont *lat; | |
c41f8cbd | 2070 | struct zfcp_unit *unit = req->unit; |
c9615858 | 2071 | |
c41f8cbd | 2072 | lat_inf = &req->qtcb->prefix.prot_status_qual.latency_info; |
c9615858 | 2073 | |
c41f8cbd | 2074 | switch (req->qtcb->bottom.io.data_direction) { |
c9615858 CS |
2075 | case FSF_DATADIR_READ: |
2076 | lat = &unit->latencies.read; | |
2077 | break; | |
2078 | case FSF_DATADIR_WRITE: | |
2079 | lat = &unit->latencies.write; | |
2080 | break; | |
2081 | case FSF_DATADIR_CMND: | |
2082 | lat = &unit->latencies.cmd; | |
2083 | break; | |
2084 | default: | |
2085 | return; | |
2086 | } | |
2087 | ||
49f0f01c | 2088 | spin_lock(&unit->latencies.lock); |
c9615858 CS |
2089 | zfcp_fsf_update_lat(&lat->channel, lat_inf->channel_lat); |
2090 | zfcp_fsf_update_lat(&lat->fabric, lat_inf->fabric_lat); | |
2091 | lat->counter++; | |
49f0f01c | 2092 | spin_unlock(&unit->latencies.lock); |
1da177e4 LT |
2093 | } |
2094 | ||
0997f1c5 SR |
2095 | #ifdef CONFIG_BLK_DEV_IO_TRACE |
2096 | static void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req) | |
2097 | { | |
2098 | struct fsf_qual_latency_info *lat_inf; | |
2099 | struct scsi_cmnd *scsi_cmnd = (struct scsi_cmnd *)fsf_req->data; | |
2100 | struct request *req = scsi_cmnd->request; | |
2101 | struct zfcp_blk_drv_data trace; | |
2102 | int ticks = fsf_req->adapter->timer_ticks; | |
2103 | ||
2104 | trace.flags = 0; | |
2105 | trace.magic = ZFCP_BLK_DRV_DATA_MAGIC; | |
2106 | if (fsf_req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) { | |
2107 | trace.flags |= ZFCP_BLK_LAT_VALID; | |
2108 | lat_inf = &fsf_req->qtcb->prefix.prot_status_qual.latency_info; | |
2109 | trace.channel_lat = lat_inf->channel_lat * ticks; | |
2110 | trace.fabric_lat = lat_inf->fabric_lat * ticks; | |
2111 | } | |
2112 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
2113 | trace.flags |= ZFCP_BLK_REQ_ERROR; | |
2114 | trace.inb_usage = fsf_req->qdio_inb_usage; | |
2115 | trace.outb_usage = fsf_req->qdio_outb_usage; | |
2116 | ||
2117 | blk_add_driver_data(req->q, req, &trace, sizeof(trace)); | |
2118 | } | |
2119 | #else | |
2120 | static inline void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req) | |
2121 | { | |
2122 | } | |
2123 | #endif | |
2124 | ||
c41f8cbd | 2125 | static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2126 | { |
0ac55aa9 | 2127 | struct scsi_cmnd *scpnt; |
1da177e4 | 2128 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) |
c41f8cbd | 2129 | &(req->qtcb->bottom.io.fcp_rsp); |
1da177e4 | 2130 | u32 sns_len; |
f76af7d7 | 2131 | char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; |
1da177e4 | 2132 | unsigned long flags; |
1da177e4 | 2133 | |
c41f8cbd SS |
2134 | read_lock_irqsave(&req->adapter->abort_lock, flags); |
2135 | ||
0ac55aa9 SS |
2136 | scpnt = req->data; |
2137 | if (unlikely(!scpnt)) { | |
2138 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); | |
2139 | return; | |
2140 | } | |
2141 | ||
c41f8cbd | 2142 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ABORTED)) { |
feac6a07 | 2143 | set_host_byte(scpnt, DID_SOFT_ERROR); |
1da177e4 LT |
2144 | goto skip_fsfstatus; |
2145 | } | |
2146 | ||
c41f8cbd | 2147 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { |
feac6a07 | 2148 | set_host_byte(scpnt, DID_ERROR); |
1da177e4 LT |
2149 | goto skip_fsfstatus; |
2150 | } | |
2151 | ||
feac6a07 | 2152 | set_msg_byte(scpnt, COMMAND_COMPLETE); |
1da177e4 | 2153 | |
1da177e4 | 2154 | scpnt->result |= fcp_rsp_iu->scsi_status; |
1da177e4 | 2155 | |
c41f8cbd SS |
2156 | if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) |
2157 | zfcp_fsf_req_latency(req); | |
c9615858 | 2158 | |
0997f1c5 SR |
2159 | zfcp_fsf_trace_latency(req); |
2160 | ||
1da177e4 | 2161 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) { |
c41f8cbd | 2162 | if (fcp_rsp_info[3] == RSP_CODE_GOOD) |
feac6a07 | 2163 | set_host_byte(scpnt, DID_OK); |
c41f8cbd | 2164 | else { |
feac6a07 | 2165 | set_host_byte(scpnt, DID_ERROR); |
6f71d9bc | 2166 | goto skip_fsfstatus; |
1da177e4 LT |
2167 | } |
2168 | } | |
2169 | ||
1da177e4 | 2170 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_sns_len_valid)) { |
c41f8cbd SS |
2171 | sns_len = FSF_FCP_RSP_SIZE - sizeof(struct fcp_rsp_iu) + |
2172 | fcp_rsp_iu->fcp_rsp_len; | |
1da177e4 | 2173 | sns_len = min(sns_len, (u32) SCSI_SENSE_BUFFERSIZE); |
1da177e4 | 2174 | sns_len = min(sns_len, fcp_rsp_iu->fcp_sns_len); |
1da177e4 | 2175 | |
9d058ecf | 2176 | memcpy(scpnt->sense_buffer, |
1da177e4 | 2177 | zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len); |
1da177e4 LT |
2178 | } |
2179 | ||
1da177e4 | 2180 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_under)) { |
7936a892 FT |
2181 | scsi_set_resid(scpnt, fcp_rsp_iu->fcp_resid); |
2182 | if (scsi_bufflen(scpnt) - scsi_get_resid(scpnt) < | |
2183 | scpnt->underflow) | |
feac6a07 | 2184 | set_host_byte(scpnt, DID_ERROR); |
1da177e4 | 2185 | } |
c41f8cbd | 2186 | skip_fsfstatus: |
8a36e453 | 2187 | if (scpnt->result != 0) |
c41f8cbd | 2188 | zfcp_scsi_dbf_event_result("erro", 3, req->adapter, scpnt, req); |
8a36e453 | 2189 | else if (scpnt->retries > 0) |
c41f8cbd | 2190 | zfcp_scsi_dbf_event_result("retr", 4, req->adapter, scpnt, req); |
8a36e453 | 2191 | else |
c41f8cbd | 2192 | zfcp_scsi_dbf_event_result("norm", 6, req->adapter, scpnt, req); |
1da177e4 | 2193 | |
1da177e4 | 2194 | scpnt->host_scribble = NULL; |
1da177e4 | 2195 | (scpnt->scsi_done) (scpnt); |
1da177e4 LT |
2196 | /* |
2197 | * We must hold this lock until scsi_done has been called. | |
2198 | * Otherwise we may call scsi_done after abort regarding this | |
2199 | * command has completed. | |
2200 | * Note: scsi_done must not block! | |
2201 | */ | |
c41f8cbd | 2202 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); |
1da177e4 LT |
2203 | } |
2204 | ||
c41f8cbd | 2205 | static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2206 | { |
1da177e4 | 2207 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) |
c41f8cbd | 2208 | &(req->qtcb->bottom.io.fcp_rsp); |
f76af7d7 | 2209 | char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; |
1da177e4 | 2210 | |
c41f8cbd SS |
2211 | if ((fcp_rsp_info[3] != RSP_CODE_GOOD) || |
2212 | (req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
2213 | req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
2214 | } | |
2215 | ||
2216 | ||
2217 | static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req) | |
2218 | { | |
2219 | struct zfcp_unit *unit; | |
2220 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
2221 | ||
2222 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)) | |
2223 | unit = req->data; | |
2224 | else | |
2225 | unit = req->unit; | |
2226 | ||
2227 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
1da177e4 | 2228 | goto skip_fsfstatus; |
1da177e4 | 2229 | |
c41f8cbd SS |
2230 | switch (header->fsf_status) { |
2231 | case FSF_HANDLE_MISMATCH: | |
2232 | case FSF_PORT_HANDLE_NOT_VALID: | |
2233 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 112, req); | |
2234 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2235 | break; | |
2236 | case FSF_FCPLUN_NOT_VALID: | |
2237 | case FSF_LUN_HANDLE_NOT_VALID: | |
2238 | zfcp_erp_port_reopen(unit->port, 0, 113, req); | |
2239 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 2240 | break; |
c41f8cbd SS |
2241 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
2242 | zfcp_fsf_class_not_supp(req); | |
1da177e4 | 2243 | break; |
c41f8cbd SS |
2244 | case FSF_ACCESS_DENIED: |
2245 | zfcp_fsf_access_denied_unit(req, unit); | |
2246 | break; | |
2247 | case FSF_DIRECTION_INDICATOR_NOT_VALID: | |
2248 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
2249 | "Incorrect direction %d, unit 0x%016Lx on port " |
2250 | "0x%016Lx closed\n", | |
c41f8cbd | 2251 | req->qtcb->bottom.io.data_direction, |
7ba58c9c SS |
2252 | (unsigned long long)unit->fcp_lun, |
2253 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
2254 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 133, req); |
2255 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2256 | break; | |
2257 | case FSF_CMND_LENGTH_NOT_VALID: | |
2258 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
2259 | "Incorrect CDB length %d, unit 0x%016Lx on " |
2260 | "port 0x%016Lx closed\n", | |
c41f8cbd | 2261 | req->qtcb->bottom.io.fcp_cmnd_length, |
7ba58c9c SS |
2262 | (unsigned long long)unit->fcp_lun, |
2263 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
2264 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 134, req); |
2265 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
2266 | break; | |
2267 | case FSF_PORT_BOXED: | |
2268 | zfcp_erp_port_boxed(unit->port, 53, req); | |
2269 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
2270 | ZFCP_STATUS_FSFREQ_RETRY; | |
2271 | break; | |
2272 | case FSF_LUN_BOXED: | |
2273 | zfcp_erp_unit_boxed(unit, 54, req); | |
2274 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
2275 | ZFCP_STATUS_FSFREQ_RETRY; | |
2276 | break; | |
2277 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
2278 | if (header->fsf_status_qual.word[0] == | |
2279 | FSF_SQ_INVOKE_LINK_TEST_PROCEDURE) | |
2280 | zfcp_test_link(unit->port); | |
2281 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 2282 | break; |
1da177e4 | 2283 | } |
c41f8cbd SS |
2284 | skip_fsfstatus: |
2285 | if (req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT) | |
2286 | zfcp_fsf_send_fcp_ctm_handler(req); | |
2287 | else { | |
2288 | zfcp_fsf_send_fcp_command_task_handler(req); | |
2289 | req->unit = NULL; | |
2290 | zfcp_unit_put(unit); | |
2291 | } | |
1da177e4 LT |
2292 | } |
2293 | ||
7ba58c9c SS |
2294 | static void zfcp_set_fcp_dl(struct fcp_cmnd_iu *fcp_cmd, u32 fcp_dl) |
2295 | { | |
2296 | u32 *fcp_dl_ptr; | |
2297 | ||
2298 | /* | |
2299 | * fcp_dl_addr = start address of fcp_cmnd structure + | |
2300 | * size of fixed part + size of dynamically sized add_dcp_cdb field | |
2301 | * SEE FCP-2 documentation | |
2302 | */ | |
2303 | fcp_dl_ptr = (u32 *) ((unsigned char *) &fcp_cmd[1] + | |
2304 | (fcp_cmd->add_fcp_cdb_length << 2)); | |
2305 | *fcp_dl_ptr = fcp_dl; | |
2306 | } | |
2307 | ||
c41f8cbd SS |
2308 | /** |
2309 | * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command) | |
c41f8cbd SS |
2310 | * @unit: unit where command is sent to |
2311 | * @scsi_cmnd: scsi command to be sent | |
1da177e4 | 2312 | */ |
63caf367 CS |
2313 | int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit, |
2314 | struct scsi_cmnd *scsi_cmnd) | |
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; | |
63caf367 | 2320 | struct zfcp_adapter *adapter = unit->port->adapter; |
1da177e4 | 2321 | |
c41f8cbd SS |
2322 | if (unlikely(!(atomic_read(&unit->status) & |
2323 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2324 | return -EBUSY; | |
1da177e4 | 2325 | |
0406289e | 2326 | spin_lock(&adapter->req_q_lock); |
2450d3e7 | 2327 | if (!zfcp_fsf_sbal_available(adapter)) |
c41f8cbd | 2328 | goto out; |
63caf367 CS |
2329 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, |
2330 | ZFCP_REQ_AUTO_CLEANUP, | |
c41f8cbd | 2331 | adapter->pool.fsf_req_scsi); |
025270f0 | 2332 | if (IS_ERR(req)) { |
c41f8cbd SS |
2333 | retval = PTR_ERR(req); |
2334 | goto out; | |
2335 | } | |
2336 | ||
2337 | zfcp_unit_get(unit); | |
2338 | req->unit = unit; | |
2339 | req->data = scsi_cmnd; | |
2340 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2341 | req->qtcb->header.lun_handle = unit->handle; | |
2342 | req->qtcb->header.port_handle = unit->port->handle; | |
2343 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
2344 | ||
2345 | scsi_cmnd->host_scribble = (unsigned char *) req->req_id; | |
2346 | ||
2347 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) &(req->qtcb->bottom.io.fcp_cmnd); | |
2348 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
2349 | /* | |
2350 | * set depending on data direction: | |
2351 | * data direction bits in SBALE (SB Type) | |
2352 | * data direction bits in QTCB | |
2353 | * data direction bits in FCP_CMND IU | |
2354 | */ | |
2355 | switch (scsi_cmnd->sc_data_direction) { | |
2356 | case DMA_NONE: | |
2357 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
2358 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
1da177e4 | 2359 | break; |
c41f8cbd SS |
2360 | case DMA_FROM_DEVICE: |
2361 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ; | |
2362 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
2363 | fcp_cmnd_iu->rddata = 1; | |
2364 | break; | |
2365 | case DMA_TO_DEVICE: | |
2366 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE; | |
2367 | sbtype = SBAL_FLAGS0_TYPE_WRITE; | |
2368 | fcp_cmnd_iu->wddata = 1; | |
1da177e4 | 2369 | break; |
c41f8cbd | 2370 | case DMA_BIDIRECTIONAL: |
1da177e4 | 2371 | default: |
c41f8cbd SS |
2372 | retval = -EIO; |
2373 | goto failed_scsi_cmnd; | |
1da177e4 LT |
2374 | } |
2375 | ||
c41f8cbd SS |
2376 | if (likely((scsi_cmnd->device->simple_tags) || |
2377 | ((atomic_read(&unit->status) & ZFCP_STATUS_UNIT_READONLY) && | |
2378 | (atomic_read(&unit->status) & ZFCP_STATUS_UNIT_SHARED)))) | |
2379 | fcp_cmnd_iu->task_attribute = SIMPLE_Q; | |
2380 | else | |
2381 | fcp_cmnd_iu->task_attribute = UNTAGGED; | |
1da177e4 | 2382 | |
c41f8cbd SS |
2383 | if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH)) |
2384 | fcp_cmnd_iu->add_fcp_cdb_length = | |
2385 | (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2; | |
1da177e4 | 2386 | |
c41f8cbd | 2387 | memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); |
45633fdc | 2388 | |
c41f8cbd | 2389 | req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + |
7ba58c9c | 2390 | fcp_cmnd_iu->add_fcp_cdb_length + sizeof(u32); |
1da177e4 | 2391 | |
c41f8cbd SS |
2392 | real_bytes = zfcp_qdio_sbals_from_sg(req, sbtype, |
2393 | scsi_sglist(scsi_cmnd), | |
2394 | FSF_MAX_SBALS_PER_REQ); | |
2395 | if (unlikely(real_bytes < 0)) { | |
2396 | if (req->sbal_number < FSF_MAX_SBALS_PER_REQ) | |
2397 | retval = -EIO; | |
2398 | else { | |
2399 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
2400 | "Oversize data package, unit 0x%016Lx " |
2401 | "on port 0x%016Lx closed\n", | |
7ba58c9c SS |
2402 | (unsigned long long)unit->fcp_lun, |
2403 | (unsigned long long)unit->port->wwpn); | |
c41f8cbd SS |
2404 | zfcp_erp_unit_shutdown(unit, 0, 131, req); |
2405 | retval = -EINVAL; | |
2406 | } | |
2407 | goto failed_scsi_cmnd; | |
1da177e4 | 2408 | } |
1da177e4 | 2409 | |
c41f8cbd | 2410 | zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes); |
1da177e4 | 2411 | |
c41f8cbd SS |
2412 | retval = zfcp_fsf_req_send(req); |
2413 | if (unlikely(retval)) | |
2414 | goto failed_scsi_cmnd; | |
1da177e4 | 2415 | |
c41f8cbd | 2416 | goto out; |
1da177e4 | 2417 | |
c41f8cbd SS |
2418 | failed_scsi_cmnd: |
2419 | zfcp_unit_put(unit); | |
2420 | zfcp_fsf_req_free(req); | |
2421 | scsi_cmnd->host_scribble = NULL; | |
2422 | out: | |
0406289e | 2423 | spin_unlock(&adapter->req_q_lock); |
c41f8cbd | 2424 | return retval; |
1da177e4 LT |
2425 | } |
2426 | ||
2427 | /** | |
c41f8cbd | 2428 | * zfcp_fsf_send_fcp_ctm - send SCSI task management command |
c41f8cbd SS |
2429 | * @unit: pointer to struct zfcp_unit |
2430 | * @tm_flags: unsigned byte for task management flags | |
c41f8cbd | 2431 | * Returns: on success pointer to struct fsf_req, NULL otherwise |
1da177e4 | 2432 | */ |
63caf367 | 2433 | struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *unit, u8 tm_flags) |
1da177e4 | 2434 | { |
44cc76f2 | 2435 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2436 | struct zfcp_fsf_req *req = NULL; |
2437 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
63caf367 | 2438 | struct zfcp_adapter *adapter = unit->port->adapter; |
1da177e4 | 2439 | |
c41f8cbd SS |
2440 | if (unlikely(!(atomic_read(&unit->status) & |
2441 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2442 | return NULL; | |
1da177e4 | 2443 | |
92cab0d9 CS |
2444 | spin_lock_bh(&adapter->req_q_lock); |
2445 | if (zfcp_fsf_req_sbal_get(adapter)) | |
c41f8cbd | 2446 | goto out; |
63caf367 | 2447 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, 0, |
c41f8cbd | 2448 | adapter->pool.fsf_req_scsi); |
633528c3 SS |
2449 | if (IS_ERR(req)) { |
2450 | req = NULL; | |
c41f8cbd | 2451 | goto out; |
633528c3 | 2452 | } |
1da177e4 | 2453 | |
c41f8cbd SS |
2454 | req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT; |
2455 | req->data = unit; | |
2456 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2457 | req->qtcb->header.lun_handle = unit->handle; | |
2458 | req->qtcb->header.port_handle = unit->port->handle; | |
2459 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
2460 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
2461 | req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + | |
7ba58c9c | 2462 | sizeof(u32); |
c41f8cbd SS |
2463 | |
2464 | sbale = zfcp_qdio_sbale_req(req); | |
2465 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE; | |
2466 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 2467 | |
c41f8cbd SS |
2468 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) &req->qtcb->bottom.io.fcp_cmnd; |
2469 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
2470 | fcp_cmnd_iu->task_management_flags = tm_flags; | |
1da177e4 | 2471 | |
c41f8cbd SS |
2472 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); |
2473 | if (!zfcp_fsf_req_send(req)) | |
2474 | goto out; | |
1da177e4 | 2475 | |
c41f8cbd SS |
2476 | zfcp_fsf_req_free(req); |
2477 | req = NULL; | |
2478 | out: | |
92cab0d9 | 2479 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
2480 | return req; |
2481 | } | |
1da177e4 | 2482 | |
c41f8cbd SS |
2483 | static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req) |
2484 | { | |
2485 | if (req->qtcb->header.fsf_status != FSF_GOOD) | |
2486 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
2487 | } |
2488 | ||
c41f8cbd SS |
2489 | /** |
2490 | * zfcp_fsf_control_file - control file upload/download | |
2491 | * @adapter: pointer to struct zfcp_adapter | |
2492 | * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc | |
2493 | * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise | |
1da177e4 | 2494 | */ |
c41f8cbd SS |
2495 | struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, |
2496 | struct zfcp_fsf_cfdc *fsf_cfdc) | |
1da177e4 | 2497 | { |
44cc76f2 | 2498 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2499 | struct zfcp_fsf_req *req = NULL; |
2500 | struct fsf_qtcb_bottom_support *bottom; | |
2501 | int direction, retval = -EIO, bytes; | |
2502 | ||
2503 | if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) | |
2504 | return ERR_PTR(-EOPNOTSUPP); | |
2505 | ||
2506 | switch (fsf_cfdc->command) { | |
2507 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
2508 | direction = SBAL_FLAGS0_TYPE_WRITE; | |
2509 | break; | |
2510 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
2511 | direction = SBAL_FLAGS0_TYPE_READ; | |
2512 | break; | |
2513 | default: | |
2514 | return ERR_PTR(-EINVAL); | |
2515 | } | |
1da177e4 | 2516 | |
0406289e | 2517 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
2518 | if (zfcp_fsf_req_sbal_get(adapter)) |
2519 | goto out; | |
1da177e4 | 2520 | |
c41f8cbd | 2521 | req = zfcp_fsf_req_create(adapter, fsf_cfdc->command, 0, NULL); |
025270f0 | 2522 | if (IS_ERR(req)) { |
c41f8cbd SS |
2523 | retval = -EPERM; |
2524 | goto out; | |
2525 | } | |
1da177e4 | 2526 | |
c41f8cbd | 2527 | req->handler = zfcp_fsf_control_file_handler; |
1da177e4 | 2528 | |
c41f8cbd SS |
2529 | sbale = zfcp_qdio_sbale_req(req); |
2530 | sbale[0].flags |= direction; | |
8a36e453 | 2531 | |
c41f8cbd SS |
2532 | bottom = &req->qtcb->bottom.support; |
2533 | bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE; | |
2534 | bottom->option = fsf_cfdc->option; | |
8a36e453 | 2535 | |
c41f8cbd SS |
2536 | bytes = zfcp_qdio_sbals_from_sg(req, direction, fsf_cfdc->sg, |
2537 | FSF_MAX_SBALS_PER_REQ); | |
2538 | if (bytes != ZFCP_CFDC_MAX_SIZE) { | |
2539 | retval = -ENOMEM; | |
2540 | zfcp_fsf_req_free(req); | |
2541 | goto out; | |
2542 | } | |
1da177e4 | 2543 | |
c41f8cbd SS |
2544 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
2545 | retval = zfcp_fsf_req_send(req); | |
2546 | out: | |
0406289e | 2547 | spin_unlock_bh(&adapter->req_q_lock); |
8a36e453 | 2548 | |
c41f8cbd SS |
2549 | if (!retval) { |
2550 | wait_event(req->completion_wq, | |
2551 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
2552 | return req; | |
1da177e4 | 2553 | } |
c41f8cbd | 2554 | return ERR_PTR(retval); |
1da177e4 | 2555 | } |