Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
553448f6 | 2 | * zfcp device driver |
1da177e4 | 3 | * |
553448f6 | 4 | * Implementation of FSF commands. |
1da177e4 | 5 | * |
a2fa0aed | 6 | * Copyright IBM Corporation 2002, 2009 |
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; | |
5ffd51a5 SS |
21 | zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, |
22 | "fsrth_1", NULL); | |
287ac01a CS |
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]); | |
5ffd51a5 | 81 | zfcp_erp_port_access_denied(port, "fspad_1", req); |
553448f6 CS |
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]); | |
5ffd51a5 | 95 | zfcp_erp_unit_access_denied(unit, "fsuad_1", req); |
553448f6 CS |
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"); | |
5ffd51a5 | 103 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fscns_1", req); |
553448f6 CS |
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); | |
5ffd51a5 | 165 | zfcp_erp_port_reopen(port, 0, "fssrpc1", req); |
c41f8cbd SS |
166 | return; |
167 | } | |
168 | read_unlock_irqrestore(&zfcp_data.config_lock, flags); | |
1da177e4 LT |
169 | } |
170 | ||
5ffd51a5 | 171 | static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, char *id, |
c41f8cbd | 172 | struct fsf_link_down_info *link_down) |
aef4a983 | 173 | { |
c41f8cbd | 174 | struct zfcp_adapter *adapter = req->adapter; |
70932935 | 175 | unsigned long flags; |
698ec016 | 176 | |
c41f8cbd | 177 | if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED) |
ee69ab7a MS |
178 | return; |
179 | ||
180 | atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status); | |
70932935 CS |
181 | |
182 | read_lock_irqsave(&zfcp_data.config_lock, flags); | |
a2fa0aed | 183 | zfcp_scsi_schedule_rports_block(adapter); |
70932935 | 184 | read_unlock_irqrestore(&zfcp_data.config_lock, flags); |
ee69ab7a | 185 | |
c41f8cbd | 186 | if (!link_down) |
2f8f3ed5 | 187 | goto out; |
ee69ab7a | 188 | |
aef4a983 MS |
189 | switch (link_down->error_code) { |
190 | case FSF_PSQ_LINK_NO_LIGHT: | |
c41f8cbd | 191 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
192 | "There is no light signal from the local " |
193 | "fibre channel cable\n"); | |
aef4a983 MS |
194 | break; |
195 | case FSF_PSQ_LINK_WRAP_PLUG: | |
c41f8cbd | 196 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
197 | "There is a wrap plug instead of a fibre " |
198 | "channel cable\n"); | |
aef4a983 MS |
199 | break; |
200 | case FSF_PSQ_LINK_NO_FCP: | |
c41f8cbd | 201 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
202 | "The adjacent fibre channel node does not " |
203 | "support FCP\n"); | |
aef4a983 MS |
204 | break; |
205 | case FSF_PSQ_LINK_FIRMWARE_UPDATE: | |
c41f8cbd | 206 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
207 | "The FCP device is suspended because of a " |
208 | "firmware update\n"); | |
553448f6 | 209 | break; |
aef4a983 | 210 | case FSF_PSQ_LINK_INVALID_WWPN: |
c41f8cbd | 211 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
212 | "The FCP device detected a WWPN that is " |
213 | "duplicate or not valid\n"); | |
aef4a983 MS |
214 | break; |
215 | case FSF_PSQ_LINK_NO_NPIV_SUPPORT: | |
c41f8cbd | 216 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 217 | "The fibre channel fabric does not support NPIV\n"); |
aef4a983 MS |
218 | break; |
219 | case FSF_PSQ_LINK_NO_FCP_RESOURCES: | |
c41f8cbd | 220 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 221 | "The FCP adapter cannot support more NPIV ports\n"); |
aef4a983 MS |
222 | break; |
223 | case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: | |
c41f8cbd | 224 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
225 | "The adjacent switch cannot support " |
226 | "more NPIV ports\n"); | |
aef4a983 MS |
227 | break; |
228 | case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: | |
c41f8cbd | 229 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
230 | "The FCP adapter could not log in to the " |
231 | "fibre channel fabric\n"); | |
aef4a983 MS |
232 | break; |
233 | case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: | |
c41f8cbd | 234 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
235 | "The WWPN assignment file on the FCP adapter " |
236 | "has been damaged\n"); | |
aef4a983 MS |
237 | break; |
238 | case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: | |
c41f8cbd | 239 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
240 | "The mode table on the FCP adapter " |
241 | "has been damaged\n"); | |
aef4a983 MS |
242 | break; |
243 | case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: | |
c41f8cbd | 244 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
245 | "All NPIV ports on the FCP adapter have " |
246 | "been assigned\n"); | |
aef4a983 MS |
247 | break; |
248 | default: | |
c41f8cbd | 249 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
250 | "The link between the FCP adapter and " |
251 | "the FC fabric is down\n"); | |
aef4a983 | 252 | } |
c41f8cbd SS |
253 | out: |
254 | zfcp_erp_adapter_failed(adapter, id, req); | |
aef4a983 MS |
255 | } |
256 | ||
c41f8cbd | 257 | static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req) |
1da177e4 | 258 | { |
c41f8cbd SS |
259 | struct fsf_status_read_buffer *sr_buf = req->data; |
260 | struct fsf_link_down_info *ldi = | |
261 | (struct fsf_link_down_info *) &sr_buf->payload; | |
1da177e4 | 262 | |
c41f8cbd SS |
263 | switch (sr_buf->status_subtype) { |
264 | case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: | |
5ffd51a5 | 265 | zfcp_fsf_link_down_info_eval(req, "fssrld1", ldi); |
1da177e4 | 266 | break; |
c41f8cbd | 267 | case FSF_STATUS_READ_SUB_FDISC_FAILED: |
5ffd51a5 | 268 | zfcp_fsf_link_down_info_eval(req, "fssrld2", ldi); |
1da177e4 | 269 | break; |
c41f8cbd | 270 | case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE: |
5ffd51a5 | 271 | zfcp_fsf_link_down_info_eval(req, "fssrld3", NULL); |
c41f8cbd SS |
272 | }; |
273 | } | |
1da177e4 | 274 | |
c41f8cbd SS |
275 | static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) |
276 | { | |
277 | struct zfcp_adapter *adapter = req->adapter; | |
278 | struct fsf_status_read_buffer *sr_buf = req->data; | |
1da177e4 | 279 | |
c41f8cbd SS |
280 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
281 | zfcp_hba_dbf_event_fsf_unsol("dism", adapter, sr_buf); | |
282 | mempool_free(sr_buf, adapter->pool.data_status_read); | |
283 | zfcp_fsf_req_free(req); | |
284 | return; | |
285 | } | |
1da177e4 | 286 | |
c41f8cbd | 287 | zfcp_hba_dbf_event_fsf_unsol("read", adapter, sr_buf); |
1da177e4 | 288 | |
c41f8cbd SS |
289 | switch (sr_buf->status_type) { |
290 | case FSF_STATUS_READ_PORT_CLOSED: | |
291 | zfcp_fsf_status_read_port_closed(req); | |
1da177e4 | 292 | break; |
c41f8cbd SS |
293 | case FSF_STATUS_READ_INCOMING_ELS: |
294 | zfcp_fc_incoming_els(req); | |
1da177e4 | 295 | break; |
c41f8cbd | 296 | case FSF_STATUS_READ_SENSE_DATA_AVAIL: |
1da177e4 | 297 | break; |
c41f8cbd | 298 | case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: |
ff3b24fa CS |
299 | dev_warn(&adapter->ccw_device->dev, |
300 | "The error threshold for checksum statistics " | |
301 | "has been exceeded\n"); | |
57069386 | 302 | zfcp_hba_dbf_event_berr(adapter, req); |
1da177e4 | 303 | break; |
c41f8cbd SS |
304 | case FSF_STATUS_READ_LINK_DOWN: |
305 | zfcp_fsf_status_read_link_down(req); | |
306 | break; | |
307 | case FSF_STATUS_READ_LINK_UP: | |
308 | dev_info(&adapter->ccw_device->dev, | |
ff3b24fa | 309 | "The local link has been restored\n"); |
c41f8cbd | 310 | /* All ports should be marked as ready to run again */ |
5ffd51a5 | 311 | zfcp_erp_modify_adapter_status(adapter, "fssrh_1", NULL, |
c41f8cbd SS |
312 | ZFCP_STATUS_COMMON_RUNNING, |
313 | ZFCP_SET); | |
314 | zfcp_erp_adapter_reopen(adapter, | |
315 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
316 | ZFCP_STATUS_COMMON_ERP_FAILED, | |
5ffd51a5 | 317 | "fssrh_2", req); |
c41f8cbd SS |
318 | break; |
319 | case FSF_STATUS_READ_NOTIFICATION_LOST: | |
320 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED) | |
5ffd51a5 SS |
321 | zfcp_erp_adapter_access_changed(adapter, "fssrh_3", |
322 | req); | |
c41f8cbd SS |
323 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS) |
324 | schedule_work(&adapter->scan_work); | |
325 | break; | |
326 | case FSF_STATUS_READ_CFDC_UPDATED: | |
5ffd51a5 | 327 | zfcp_erp_adapter_access_changed(adapter, "fssrh_4", req); |
c41f8cbd SS |
328 | break; |
329 | case FSF_STATUS_READ_FEATURE_UPDATE_ALERT: | |
330 | adapter->adapter_features = sr_buf->payload.word[0]; | |
1da177e4 | 331 | break; |
1da177e4 LT |
332 | } |
333 | ||
c41f8cbd SS |
334 | mempool_free(sr_buf, adapter->pool.data_status_read); |
335 | zfcp_fsf_req_free(req); | |
1da177e4 | 336 | |
c41f8cbd | 337 | atomic_inc(&adapter->stat_miss); |
b7f15f3c | 338 | queue_work(zfcp_data.work_queue, &adapter->stat_work); |
c41f8cbd | 339 | } |
1da177e4 | 340 | |
c41f8cbd SS |
341 | static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req) |
342 | { | |
343 | switch (req->qtcb->header.fsf_status_qual.word[0]) { | |
344 | case FSF_SQ_FCP_RSP_AVAILABLE: | |
345 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
346 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
347 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
348 | return; | |
349 | case FSF_SQ_COMMAND_ABORTED: | |
350 | req->status |= ZFCP_STATUS_FSFREQ_ABORTED; | |
351 | break; | |
352 | case FSF_SQ_NO_RECOM: | |
353 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
354 | "The FCP adapter reported a problem " |
355 | "that cannot be recovered\n"); | |
5ffd51a5 | 356 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1", req); |
c41f8cbd SS |
357 | break; |
358 | } | |
359 | /* all non-return stats set FSFREQ_ERROR*/ | |
360 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
361 | } |
362 | ||
c41f8cbd | 363 | static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req) |
1da177e4 | 364 | { |
c41f8cbd SS |
365 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
366 | return; | |
1da177e4 | 367 | |
c41f8cbd SS |
368 | switch (req->qtcb->header.fsf_status) { |
369 | case FSF_UNKNOWN_COMMAND: | |
370 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa | 371 | "The FCP adapter does not recognize the command 0x%x\n", |
c41f8cbd | 372 | req->qtcb->header.fsf_command); |
5ffd51a5 | 373 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1", req); |
c41f8cbd SS |
374 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
375 | break; | |
376 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
377 | zfcp_fsf_fsfstatus_qual_eval(req); | |
378 | break; | |
379 | } | |
380 | } | |
1da177e4 | 381 | |
c41f8cbd SS |
382 | static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) |
383 | { | |
384 | struct zfcp_adapter *adapter = req->adapter; | |
385 | struct fsf_qtcb *qtcb = req->qtcb; | |
386 | union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual; | |
1da177e4 | 387 | |
c41f8cbd | 388 | zfcp_hba_dbf_event_fsf_response(req); |
1da177e4 | 389 | |
c41f8cbd SS |
390 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
391 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
392 | ZFCP_STATUS_FSFREQ_RETRY; /* only for SCSI cmnds. */ | |
393 | return; | |
394 | } | |
1da177e4 | 395 | |
c41f8cbd SS |
396 | switch (qtcb->prefix.prot_status) { |
397 | case FSF_PROT_GOOD: | |
398 | case FSF_PROT_FSF_STATUS_PRESENTED: | |
399 | return; | |
400 | case FSF_PROT_QTCB_VERSION_ERROR: | |
401 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
402 | "QTCB version 0x%x not supported by FCP adapter " |
403 | "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION, | |
404 | psq->word[0], psq->word[1]); | |
5ffd51a5 | 405 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1", req); |
c41f8cbd SS |
406 | break; |
407 | case FSF_PROT_ERROR_STATE: | |
408 | case FSF_PROT_SEQ_NUMB_ERROR: | |
5ffd51a5 | 409 | zfcp_erp_adapter_reopen(adapter, 0, "fspse_2", req); |
c41f8cbd SS |
410 | req->status |= ZFCP_STATUS_FSFREQ_RETRY; |
411 | break; | |
412 | case FSF_PROT_UNSUPP_QTCB_TYPE: | |
413 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 414 | "The QTCB type is not supported by the FCP adapter\n"); |
5ffd51a5 | 415 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3", req); |
c41f8cbd SS |
416 | break; |
417 | case FSF_PROT_HOST_CONNECTION_INITIALIZING: | |
418 | atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT, | |
419 | &adapter->status); | |
420 | break; | |
421 | case FSF_PROT_DUPLICATE_REQUEST_ID: | |
422 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 423 | "0x%Lx is an ambiguous request identifier\n", |
c41f8cbd | 424 | (unsigned long long)qtcb->bottom.support.req_handle); |
5ffd51a5 | 425 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_4", req); |
c41f8cbd SS |
426 | break; |
427 | case FSF_PROT_LINK_DOWN: | |
5ffd51a5 SS |
428 | zfcp_fsf_link_down_info_eval(req, "fspse_5", |
429 | &psq->link_down_info); | |
c41f8cbd | 430 | /* FIXME: reopening adapter now? better wait for link up */ |
5ffd51a5 | 431 | zfcp_erp_adapter_reopen(adapter, 0, "fspse_6", req); |
c41f8cbd SS |
432 | break; |
433 | case FSF_PROT_REEST_QUEUE: | |
434 | /* All ports should be marked as ready to run again */ | |
5ffd51a5 | 435 | zfcp_erp_modify_adapter_status(adapter, "fspse_7", NULL, |
c41f8cbd SS |
436 | ZFCP_STATUS_COMMON_RUNNING, |
437 | ZFCP_SET); | |
438 | zfcp_erp_adapter_reopen(adapter, | |
439 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
5ffd51a5 SS |
440 | ZFCP_STATUS_COMMON_ERP_FAILED, |
441 | "fspse_8", req); | |
c41f8cbd SS |
442 | break; |
443 | default: | |
444 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 445 | "0x%x is not a valid transfer protocol status\n", |
c41f8cbd | 446 | qtcb->prefix.prot_status); |
5ffd51a5 | 447 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9", req); |
c41f8cbd SS |
448 | } |
449 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
450 | } |
451 | ||
c41f8cbd SS |
452 | /** |
453 | * zfcp_fsf_req_complete - process completion of a FSF request | |
454 | * @fsf_req: The FSF request that has been completed. | |
455 | * | |
456 | * When a request has been completed either from the FCP adapter, | |
457 | * or it has been dismissed due to a queue shutdown, this function | |
458 | * is called to process the completion status and trigger further | |
459 | * events related to the FSF request. | |
460 | */ | |
461 | void zfcp_fsf_req_complete(struct zfcp_fsf_req *req) | |
1da177e4 | 462 | { |
c41f8cbd SS |
463 | if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) { |
464 | zfcp_fsf_status_read_handler(req); | |
465 | return; | |
466 | } | |
1da177e4 | 467 | |
c41f8cbd SS |
468 | del_timer(&req->timer); |
469 | zfcp_fsf_protstatus_eval(req); | |
470 | zfcp_fsf_fsfstatus_eval(req); | |
471 | req->handler(req); | |
1da177e4 | 472 | |
c41f8cbd | 473 | if (req->erp_action) |
287ac01a | 474 | zfcp_erp_notify(req->erp_action, 0); |
c41f8cbd | 475 | req->status |= ZFCP_STATUS_FSFREQ_COMPLETED; |
1da177e4 | 476 | |
c41f8cbd SS |
477 | if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP)) |
478 | zfcp_fsf_req_free(req); | |
479 | else | |
480 | /* notify initiator waiting for the requests completion */ | |
481 | /* | |
482 | * FIXME: Race! We must not access fsf_req here as it might have been | |
483 | * cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED | |
484 | * flag. It's an improbable case. But, we have the same paranoia for | |
485 | * the cleanup flag already. | |
486 | * Might better be handled using complete()? | |
487 | * (setting the flag and doing wakeup ought to be atomic | |
488 | * with regard to checking the flag as long as waitqueue is | |
489 | * part of the to be released structure) | |
490 | */ | |
491 | wake_up(&req->completion_wq); | |
492 | } | |
1da177e4 | 493 | |
c41f8cbd SS |
494 | static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req) |
495 | { | |
496 | struct fsf_qtcb_bottom_config *bottom; | |
497 | struct zfcp_adapter *adapter = req->adapter; | |
498 | struct Scsi_Host *shost = adapter->scsi_host; | |
1da177e4 | 499 | |
c41f8cbd | 500 | bottom = &req->qtcb->bottom.config; |
1da177e4 | 501 | |
c41f8cbd SS |
502 | if (req->data) |
503 | memcpy(req->data, bottom, sizeof(*bottom)); | |
504 | ||
505 | fc_host_node_name(shost) = bottom->nport_serv_param.wwnn; | |
506 | fc_host_port_name(shost) = bottom->nport_serv_param.wwpn; | |
507 | fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK; | |
508 | fc_host_speed(shost) = bottom->fc_link_speed; | |
509 | fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3; | |
510 | ||
511 | adapter->hydra_version = bottom->adapter_type; | |
512 | adapter->timer_ticks = bottom->timer_interval; | |
513 | ||
514 | if (fc_host_permanent_port_name(shost) == -1) | |
515 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
516 | ||
517 | switch (bottom->fc_topology) { | |
518 | case FSF_TOPO_P2P: | |
519 | adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK; | |
520 | adapter->peer_wwpn = bottom->plogi_payload.wwpn; | |
521 | adapter->peer_wwnn = bottom->plogi_payload.wwnn; | |
522 | fc_host_port_type(shost) = FC_PORTTYPE_PTP; | |
c41f8cbd SS |
523 | break; |
524 | case FSF_TOPO_FABRIC: | |
525 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
c41f8cbd SS |
526 | break; |
527 | case FSF_TOPO_AL: | |
528 | fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; | |
c41f8cbd | 529 | default: |
c41f8cbd | 530 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
531 | "Unknown or unsupported arbitrated loop " |
532 | "fibre channel topology detected\n"); | |
5ffd51a5 | 533 | zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1", req); |
c41f8cbd | 534 | return -EIO; |
1da177e4 | 535 | } |
c41f8cbd | 536 | |
1da177e4 LT |
537 | return 0; |
538 | } | |
539 | ||
c41f8cbd | 540 | static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) |
553448f6 CS |
541 | { |
542 | struct zfcp_adapter *adapter = req->adapter; | |
c41f8cbd SS |
543 | struct fsf_qtcb *qtcb = req->qtcb; |
544 | struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config; | |
545 | struct Scsi_Host *shost = adapter->scsi_host; | |
553448f6 | 546 | |
c41f8cbd SS |
547 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
548 | return; | |
1da177e4 | 549 | |
c41f8cbd SS |
550 | adapter->fsf_lic_version = bottom->lic_version; |
551 | adapter->adapter_features = bottom->adapter_features; | |
552 | adapter->connection_features = bottom->connection_features; | |
553 | adapter->peer_wwpn = 0; | |
554 | adapter->peer_wwnn = 0; | |
555 | adapter->peer_d_id = 0; | |
8a36e453 | 556 | |
c41f8cbd SS |
557 | switch (qtcb->header.fsf_status) { |
558 | case FSF_GOOD: | |
559 | if (zfcp_fsf_exchange_config_evaluate(req)) | |
560 | return; | |
1da177e4 | 561 | |
c41f8cbd SS |
562 | if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { |
563 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
564 | "FCP adapter maximum QTCB size (%d bytes) " |
565 | "is too small\n", | |
566 | bottom->max_qtcb_size); | |
5ffd51a5 | 567 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1", req); |
c41f8cbd SS |
568 | return; |
569 | } | |
570 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, | |
571 | &adapter->status); | |
1da177e4 | 572 | break; |
c41f8cbd SS |
573 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
574 | fc_host_node_name(shost) = 0; | |
575 | fc_host_port_name(shost) = 0; | |
576 | fc_host_port_id(shost) = 0; | |
577 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; | |
578 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; | |
579 | adapter->hydra_version = 0; | |
1da177e4 | 580 | |
c41f8cbd SS |
581 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, |
582 | &adapter->status); | |
1da177e4 | 583 | |
5ffd51a5 | 584 | zfcp_fsf_link_down_info_eval(req, "fsecdh2", |
c41f8cbd | 585 | &qtcb->header.fsf_status_qual.link_down_info); |
1da177e4 | 586 | break; |
c41f8cbd | 587 | default: |
5ffd51a5 | 588 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3", req); |
c41f8cbd SS |
589 | return; |
590 | } | |
1da177e4 | 591 | |
c41f8cbd SS |
592 | if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) { |
593 | adapter->hardware_version = bottom->hardware_version; | |
594 | memcpy(fc_host_serial_number(shost), bottom->serial_number, | |
595 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
596 | EBCASC(fc_host_serial_number(shost), | |
597 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
598 | } | |
1da177e4 | 599 | |
c41f8cbd SS |
600 | if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) { |
601 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
602 | "The FCP adapter only supports newer " |
603 | "control block versions\n"); | |
5ffd51a5 | 604 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4", req); |
c41f8cbd SS |
605 | return; |
606 | } | |
607 | if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) { | |
608 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
609 | "The FCP adapter only supports older " |
610 | "control block versions\n"); | |
5ffd51a5 | 611 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5", req); |
c41f8cbd SS |
612 | } |
613 | } | |
1da177e4 | 614 | |
c41f8cbd SS |
615 | static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req) |
616 | { | |
617 | struct zfcp_adapter *adapter = req->adapter; | |
618 | struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port; | |
619 | struct Scsi_Host *shost = adapter->scsi_host; | |
1da177e4 | 620 | |
c41f8cbd SS |
621 | if (req->data) |
622 | memcpy(req->data, bottom, sizeof(*bottom)); | |
9eb69aff | 623 | |
0282985d | 624 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) { |
c41f8cbd | 625 | fc_host_permanent_port_name(shost) = bottom->wwpn; |
0282985d CS |
626 | fc_host_port_type(shost) = FC_PORTTYPE_NPIV; |
627 | } else | |
c41f8cbd SS |
628 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); |
629 | fc_host_maxframe_size(shost) = bottom->maximum_frame_size; | |
630 | fc_host_supported_speeds(shost) = bottom->supported_speed; | |
631 | } | |
1da177e4 | 632 | |
c41f8cbd SS |
633 | static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) |
634 | { | |
c41f8cbd SS |
635 | struct fsf_qtcb *qtcb = req->qtcb; |
636 | ||
637 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
638 | return; | |
639 | ||
640 | switch (qtcb->header.fsf_status) { | |
641 | case FSF_GOOD: | |
642 | zfcp_fsf_exchange_port_evaluate(req); | |
c41f8cbd SS |
643 | break; |
644 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: | |
645 | zfcp_fsf_exchange_port_evaluate(req); | |
5ffd51a5 | 646 | zfcp_fsf_link_down_info_eval(req, "fsepdh1", |
c41f8cbd | 647 | &qtcb->header.fsf_status_qual.link_down_info); |
aef4a983 | 648 | break; |
1da177e4 | 649 | } |
c41f8cbd | 650 | } |
d26ab06e | 651 | |
7001f0c4 | 652 | static int zfcp_fsf_sbal_check(struct zfcp_adapter *adapter) |
c41f8cbd | 653 | { |
dedbc2b3 | 654 | struct zfcp_qdio_queue *req_q = &adapter->req_q; |
c41f8cbd | 655 | |
7001f0c4 MP |
656 | spin_lock_bh(&adapter->req_q_lock); |
657 | if (atomic_read(&req_q->count)) | |
658 | return 1; | |
659 | spin_unlock_bh(&adapter->req_q_lock); | |
660 | return 0; | |
661 | } | |
662 | ||
663 | static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter) | |
664 | { | |
665 | long ret; | |
dedbc2b3 | 666 | |
0406289e | 667 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 668 | ret = wait_event_interruptible_timeout(adapter->request_wq, |
7001f0c4 | 669 | zfcp_fsf_sbal_check(adapter), 5 * HZ); |
c41f8cbd SS |
670 | if (ret > 0) |
671 | return 0; | |
2450d3e7 SR |
672 | if (!ret) |
673 | atomic_inc(&adapter->qdio_outb_full); | |
7001f0c4 MP |
674 | |
675 | spin_lock_bh(&adapter->req_q_lock); | |
c41f8cbd SS |
676 | return -EIO; |
677 | } | |
678 | ||
679 | static struct zfcp_fsf_req *zfcp_fsf_alloc_noqtcb(mempool_t *pool) | |
680 | { | |
681 | struct zfcp_fsf_req *req; | |
682 | req = mempool_alloc(pool, GFP_ATOMIC); | |
683 | if (!req) | |
684 | return NULL; | |
685 | memset(req, 0, sizeof(*req)); | |
88f2a977 | 686 | req->pool = pool; |
c41f8cbd SS |
687 | return req; |
688 | } | |
689 | ||
690 | static struct zfcp_fsf_req *zfcp_fsf_alloc_qtcb(mempool_t *pool) | |
691 | { | |
692 | struct zfcp_fsf_req_qtcb *qtcb; | |
693 | ||
694 | if (likely(pool)) | |
695 | qtcb = mempool_alloc(pool, GFP_ATOMIC); | |
696 | else | |
697 | qtcb = kmem_cache_alloc(zfcp_data.fsf_req_qtcb_cache, | |
698 | GFP_ATOMIC); | |
699 | if (unlikely(!qtcb)) | |
700 | return NULL; | |
701 | ||
702 | memset(qtcb, 0, sizeof(*qtcb)); | |
703 | qtcb->fsf_req.qtcb = &qtcb->qtcb; | |
704 | qtcb->fsf_req.pool = pool; | |
705 | ||
706 | return &qtcb->fsf_req; | |
707 | } | |
708 | ||
709 | static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter, | |
710 | u32 fsf_cmd, int req_flags, | |
711 | mempool_t *pool) | |
1da177e4 | 712 | { |
44cc76f2 | 713 | struct qdio_buffer_element *sbale; |
1da177e4 | 714 | |
c41f8cbd SS |
715 | struct zfcp_fsf_req *req; |
716 | struct zfcp_qdio_queue *req_q = &adapter->req_q; | |
951f746f | 717 | |
c41f8cbd SS |
718 | if (req_flags & ZFCP_REQ_NO_QTCB) |
719 | req = zfcp_fsf_alloc_noqtcb(pool); | |
720 | else | |
721 | req = zfcp_fsf_alloc_qtcb(pool); | |
1da177e4 | 722 | |
c41f8cbd SS |
723 | if (unlikely(!req)) |
724 | return ERR_PTR(-EIO); | |
1da177e4 | 725 | |
c41f8cbd SS |
726 | if (adapter->req_no == 0) |
727 | adapter->req_no++; | |
1da177e4 | 728 | |
c41f8cbd SS |
729 | INIT_LIST_HEAD(&req->list); |
730 | init_timer(&req->timer); | |
731 | init_waitqueue_head(&req->completion_wq); | |
1da177e4 | 732 | |
c41f8cbd SS |
733 | req->adapter = adapter; |
734 | req->fsf_command = fsf_cmd; | |
52bfb558 | 735 | req->req_id = adapter->req_no; |
c41f8cbd SS |
736 | req->sbal_number = 1; |
737 | req->sbal_first = req_q->first; | |
738 | req->sbal_last = req_q->first; | |
739 | req->sbale_curr = 1; | |
740 | ||
741 | sbale = zfcp_qdio_sbale_req(req); | |
742 | sbale[0].addr = (void *) req->req_id; | |
743 | sbale[0].flags |= SBAL_FLAGS0_COMMAND; | |
744 | ||
745 | if (likely(req->qtcb)) { | |
746 | req->qtcb->prefix.req_seq_no = req->adapter->fsf_req_seq_no; | |
747 | req->qtcb->prefix.req_id = req->req_id; | |
748 | req->qtcb->prefix.ulp_info = 26; | |
749 | req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command]; | |
750 | req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION; | |
751 | req->qtcb->header.req_handle = req->req_id; | |
752 | req->qtcb->header.fsf_command = req->fsf_command; | |
753 | req->seq_no = adapter->fsf_req_seq_no; | |
754 | req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; | |
755 | sbale[1].addr = (void *) req->qtcb; | |
756 | sbale[1].length = sizeof(struct fsf_qtcb); | |
757 | } | |
758 | ||
759 | if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) { | |
760 | zfcp_fsf_req_free(req); | |
761 | return ERR_PTR(-EIO); | |
762 | } | |
951f746f | 763 | |
c41f8cbd SS |
764 | if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP)) |
765 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; | |
1da177e4 | 766 | |
c41f8cbd | 767 | return req; |
1da177e4 LT |
768 | } |
769 | ||
c41f8cbd SS |
770 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) |
771 | { | |
772 | struct zfcp_adapter *adapter = req->adapter; | |
135ea137 MP |
773 | unsigned long flags; |
774 | int idx; | |
775 | int with_qtcb = (req->qtcb != NULL); | |
c41f8cbd SS |
776 | |
777 | /* put allocated FSF request into hash table */ | |
45316a86 | 778 | spin_lock_irqsave(&adapter->req_list_lock, flags); |
c41f8cbd SS |
779 | idx = zfcp_reqlist_hash(req->req_id); |
780 | list_add_tail(&req->list, &adapter->req_list[idx]); | |
45316a86 | 781 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); |
c41f8cbd | 782 | |
3765138a | 783 | req->qdio_outb_usage = atomic_read(&adapter->req_q.count); |
c41f8cbd SS |
784 | req->issued = get_clock(); |
785 | if (zfcp_qdio_send(req)) { | |
c41f8cbd | 786 | del_timer(&req->timer); |
3765138a CS |
787 | spin_lock_irqsave(&adapter->req_list_lock, flags); |
788 | /* lookup request again, list might have changed */ | |
789 | if (zfcp_reqlist_find_safe(adapter, req)) | |
790 | zfcp_reqlist_remove(adapter, req); | |
791 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); | |
5ffd51a5 | 792 | zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1", req); |
c41f8cbd SS |
793 | return -EIO; |
794 | } | |
795 | ||
796 | /* Don't increase for unsolicited status */ | |
135ea137 | 797 | if (with_qtcb) |
c41f8cbd | 798 | adapter->fsf_req_seq_no++; |
52bfb558 | 799 | adapter->req_no++; |
c41f8cbd SS |
800 | |
801 | return 0; | |
802 | } | |
803 | ||
804 | /** | |
805 | * zfcp_fsf_status_read - send status read request | |
806 | * @adapter: pointer to struct zfcp_adapter | |
807 | * @req_flags: request flags | |
808 | * Returns: 0 on success, ERROR otherwise | |
1da177e4 | 809 | */ |
c41f8cbd | 810 | int zfcp_fsf_status_read(struct zfcp_adapter *adapter) |
1da177e4 | 811 | { |
c41f8cbd SS |
812 | struct zfcp_fsf_req *req; |
813 | struct fsf_status_read_buffer *sr_buf; | |
44cc76f2 | 814 | struct qdio_buffer_element *sbale; |
c41f8cbd | 815 | int retval = -EIO; |
1da177e4 | 816 | |
0406289e | 817 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
818 | if (zfcp_fsf_req_sbal_get(adapter)) |
819 | goto out; | |
820 | ||
821 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS, | |
822 | ZFCP_REQ_NO_QTCB, | |
823 | adapter->pool.fsf_req_status_read); | |
025270f0 | 824 | if (IS_ERR(req)) { |
c41f8cbd SS |
825 | retval = PTR_ERR(req); |
826 | goto out; | |
1da177e4 LT |
827 | } |
828 | ||
c41f8cbd SS |
829 | sbale = zfcp_qdio_sbale_req(req); |
830 | sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS; | |
831 | sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY; | |
832 | req->sbale_curr = 2; | |
833 | ||
834 | sr_buf = mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC); | |
835 | if (!sr_buf) { | |
836 | retval = -ENOMEM; | |
837 | goto failed_buf; | |
838 | } | |
839 | memset(sr_buf, 0, sizeof(*sr_buf)); | |
840 | req->data = sr_buf; | |
841 | sbale = zfcp_qdio_sbale_curr(req); | |
842 | sbale->addr = (void *) sr_buf; | |
843 | sbale->length = sizeof(*sr_buf); | |
059c97d0 | 844 | |
c41f8cbd SS |
845 | retval = zfcp_fsf_req_send(req); |
846 | if (retval) | |
847 | goto failed_req_send; | |
1da177e4 | 848 | |
c41f8cbd SS |
849 | goto out; |
850 | ||
851 | failed_req_send: | |
852 | mempool_free(sr_buf, adapter->pool.data_status_read); | |
853 | failed_buf: | |
854 | zfcp_fsf_req_free(req); | |
855 | zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL); | |
856 | out: | |
0406289e | 857 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
858 | return retval; |
859 | } | |
860 | ||
861 | static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req) | |
862 | { | |
863 | struct zfcp_unit *unit = req->data; | |
864 | union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual; | |
865 | ||
866 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
867 | return; | |
868 | ||
869 | switch (req->qtcb->header.fsf_status) { | |
1da177e4 | 870 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd | 871 | if (fsq->word[0] == fsq->word[1]) { |
5ffd51a5 SS |
872 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, |
873 | "fsafch1", req); | |
c41f8cbd | 874 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
875 | } |
876 | break; | |
1da177e4 | 877 | case FSF_LUN_HANDLE_NOT_VALID: |
c41f8cbd | 878 | if (fsq->word[0] == fsq->word[1]) { |
5ffd51a5 | 879 | zfcp_erp_port_reopen(unit->port, 0, "fsafch2", req); |
c41f8cbd | 880 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
881 | } |
882 | break; | |
1da177e4 | 883 | case FSF_FCP_COMMAND_DOES_NOT_EXIST: |
c41f8cbd | 884 | req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED; |
1da177e4 | 885 | break; |
1da177e4 | 886 | case FSF_PORT_BOXED: |
5ffd51a5 | 887 | zfcp_erp_port_boxed(unit->port, "fsafch3", req); |
c41f8cbd SS |
888 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
889 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 890 | break; |
1da177e4 | 891 | case FSF_LUN_BOXED: |
5ffd51a5 | 892 | zfcp_erp_unit_boxed(unit, "fsafch4", req); |
c41f8cbd SS |
893 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
894 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 895 | break; |
1da177e4 | 896 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 897 | switch (fsq->word[0]) { |
1da177e4 | 898 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
65a8d4e1 | 899 | zfcp_test_link(unit->port); |
1da177e4 | 900 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 901 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 902 | break; |
1da177e4 LT |
903 | } |
904 | break; | |
1da177e4 | 905 | case FSF_GOOD: |
c41f8cbd | 906 | req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED; |
1da177e4 | 907 | break; |
1da177e4 | 908 | } |
1da177e4 LT |
909 | } |
910 | ||
911 | /** | |
c41f8cbd SS |
912 | * zfcp_fsf_abort_fcp_command - abort running SCSI command |
913 | * @old_req_id: unsigned long | |
c41f8cbd | 914 | * @unit: pointer to struct zfcp_unit |
c41f8cbd | 915 | * Returns: pointer to struct zfcp_fsf_req |
1da177e4 | 916 | */ |
1da177e4 | 917 | |
c41f8cbd | 918 | struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id, |
63caf367 | 919 | struct zfcp_unit *unit) |
1da177e4 | 920 | { |
44cc76f2 | 921 | struct qdio_buffer_element *sbale; |
c41f8cbd | 922 | struct zfcp_fsf_req *req = NULL; |
63caf367 | 923 | struct zfcp_adapter *adapter = unit->port->adapter; |
8a36e453 | 924 | |
92cab0d9 CS |
925 | spin_lock_bh(&adapter->req_q_lock); |
926 | if (zfcp_fsf_req_sbal_get(adapter)) | |
c41f8cbd SS |
927 | goto out; |
928 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND, | |
63caf367 | 929 | 0, adapter->pool.fsf_req_abort); |
633528c3 SS |
930 | if (IS_ERR(req)) { |
931 | req = NULL; | |
c41f8cbd | 932 | goto out; |
633528c3 | 933 | } |
2abbe866 | 934 | |
c41f8cbd SS |
935 | if (unlikely(!(atomic_read(&unit->status) & |
936 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
937 | goto out_error_free; | |
1da177e4 | 938 | |
c41f8cbd SS |
939 | sbale = zfcp_qdio_sbale_req(req); |
940 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
941 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 942 | |
c41f8cbd SS |
943 | req->data = unit; |
944 | req->handler = zfcp_fsf_abort_fcp_command_handler; | |
945 | req->qtcb->header.lun_handle = unit->handle; | |
946 | req->qtcb->header.port_handle = unit->port->handle; | |
947 | req->qtcb->bottom.support.req_handle = (u64) old_req_id; | |
948 | ||
949 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); | |
950 | if (!zfcp_fsf_req_send(req)) | |
951 | goto out; | |
952 | ||
953 | out_error_free: | |
954 | zfcp_fsf_req_free(req); | |
955 | req = NULL; | |
956 | out: | |
92cab0d9 | 957 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 958 | return req; |
1da177e4 LT |
959 | } |
960 | ||
c41f8cbd | 961 | static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) |
1da177e4 | 962 | { |
c41f8cbd SS |
963 | struct zfcp_adapter *adapter = req->adapter; |
964 | struct zfcp_send_ct *send_ct = req->data; | |
c41f8cbd | 965 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1da177e4 | 966 | |
c41f8cbd | 967 | send_ct->status = -EINVAL; |
1da177e4 | 968 | |
c41f8cbd | 969 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
970 | goto skip_fsfstatus; |
971 | ||
1da177e4 | 972 | switch (header->fsf_status) { |
1da177e4 | 973 | case FSF_GOOD: |
c41f8cbd SS |
974 | zfcp_san_dbf_event_ct_response(req); |
975 | send_ct->status = 0; | |
1da177e4 | 976 | break; |
1da177e4 | 977 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 978 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 979 | break; |
1da177e4 | 980 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
981 | switch (header->fsf_status_qual.word[0]){ |
982 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 983 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 984 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 985 | break; |
1da177e4 LT |
986 | } |
987 | break; | |
1da177e4 | 988 | case FSF_ACCESS_DENIED: |
1da177e4 | 989 | break; |
1da177e4 | 990 | case FSF_PORT_BOXED: |
c41f8cbd SS |
991 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
992 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 993 | break; |
c41f8cbd | 994 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 995 | zfcp_erp_adapter_reopen(adapter, 0, "fsscth1", req); |
c41f8cbd | 996 | case FSF_GENERIC_COMMAND_REJECTED: |
1da177e4 | 997 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 998 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 999 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1000 | case FSF_SBAL_MISMATCH: |
c41f8cbd | 1001 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1002 | break; |
1003 | } | |
1004 | ||
1005 | skip_fsfstatus: | |
c41f8cbd | 1006 | if (send_ct->handler) |
1da177e4 | 1007 | send_ct->handler(send_ct->handler_data); |
c41f8cbd | 1008 | } |
1da177e4 | 1009 | |
39eb7e9a CS |
1010 | static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req, |
1011 | struct scatterlist *sg_req, | |
1012 | struct scatterlist *sg_resp, | |
1013 | int max_sbals) | |
c41f8cbd | 1014 | { |
39eb7e9a CS |
1015 | struct qdio_buffer_element *sbale = zfcp_qdio_sbale_req(req); |
1016 | u32 feat = req->adapter->adapter_features; | |
c41f8cbd SS |
1017 | int bytes; |
1018 | ||
39eb7e9a CS |
1019 | if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) { |
1020 | if (sg_req->length > PAGE_SIZE || sg_resp->length > PAGE_SIZE || | |
1021 | !sg_is_last(sg_req) || !sg_is_last(sg_resp)) | |
1022 | return -EOPNOTSUPP; | |
1023 | ||
1024 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ; | |
1025 | sbale[2].addr = sg_virt(sg_req); | |
1026 | sbale[2].length = sg_req->length; | |
1027 | sbale[3].addr = sg_virt(sg_resp); | |
1028 | sbale[3].length = sg_resp->length; | |
1029 | sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1030 | return 0; | |
1031 | } | |
1032 | ||
c41f8cbd SS |
1033 | bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, |
1034 | sg_req, max_sbals); | |
1035 | if (bytes <= 0) | |
1036 | return -ENOMEM; | |
1037 | req->qtcb->bottom.support.req_buf_length = bytes; | |
1038 | req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; | |
1039 | ||
1040 | bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, | |
1041 | sg_resp, max_sbals); | |
1042 | if (bytes <= 0) | |
1043 | return -ENOMEM; | |
1044 | req->qtcb->bottom.support.resp_buf_length = bytes; | |
1045 | ||
1046 | return 0; | |
1da177e4 LT |
1047 | } |
1048 | ||
1049 | /** | |
c41f8cbd SS |
1050 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) |
1051 | * @ct: pointer to struct zfcp_send_ct with data for request | |
1052 | * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req | |
1053 | * @erp_action: if non-null the Generic Service request sent within ERP | |
1da177e4 | 1054 | */ |
c41f8cbd SS |
1055 | int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, |
1056 | struct zfcp_erp_action *erp_action) | |
1da177e4 | 1057 | { |
5ab944f9 SS |
1058 | struct zfcp_wka_port *wka_port = ct->wka_port; |
1059 | struct zfcp_adapter *adapter = wka_port->adapter; | |
c41f8cbd SS |
1060 | struct zfcp_fsf_req *req; |
1061 | int ret = -EIO; | |
1da177e4 | 1062 | |
0406289e | 1063 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1064 | if (zfcp_fsf_req_sbal_get(adapter)) |
1065 | goto out; | |
1da177e4 | 1066 | |
c41f8cbd SS |
1067 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC, |
1068 | ZFCP_REQ_AUTO_CLEANUP, pool); | |
025270f0 | 1069 | if (IS_ERR(req)) { |
c41f8cbd SS |
1070 | ret = PTR_ERR(req); |
1071 | goto out; | |
3f0ca62a CS |
1072 | } |
1073 | ||
39eb7e9a CS |
1074 | ret = zfcp_fsf_setup_ct_els_sbals(req, ct->req, ct->resp, |
1075 | FSF_MAX_SBALS_PER_REQ); | |
553448f6 | 1076 | if (ret) |
1da177e4 | 1077 | goto failed_send; |
1da177e4 | 1078 | |
c41f8cbd | 1079 | req->handler = zfcp_fsf_send_ct_handler; |
5ab944f9 | 1080 | req->qtcb->header.port_handle = wka_port->handle; |
c41f8cbd SS |
1081 | req->qtcb->bottom.support.service_class = FSF_CLASS_3; |
1082 | req->qtcb->bottom.support.timeout = ct->timeout; | |
1083 | req->data = ct; | |
1084 | ||
1085 | zfcp_san_dbf_event_ct_request(req); | |
1086 | ||
1087 | if (erp_action) { | |
1088 | erp_action->fsf_req = req; | |
1089 | req->erp_action = erp_action; | |
287ac01a | 1090 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
1091 | } else |
1092 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1da177e4 | 1093 | |
c41f8cbd SS |
1094 | ret = zfcp_fsf_req_send(req); |
1095 | if (ret) | |
1096 | goto failed_send; | |
1da177e4 | 1097 | |
c41f8cbd | 1098 | goto out; |
1da177e4 | 1099 | |
c41f8cbd SS |
1100 | failed_send: |
1101 | zfcp_fsf_req_free(req); | |
1102 | if (erp_action) | |
1103 | erp_action->fsf_req = NULL; | |
1104 | out: | |
0406289e | 1105 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 1106 | return ret; |
1da177e4 LT |
1107 | } |
1108 | ||
c41f8cbd | 1109 | static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1110 | { |
c41f8cbd SS |
1111 | struct zfcp_send_els *send_els = req->data; |
1112 | struct zfcp_port *port = send_els->port; | |
1113 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1114 | |
c41f8cbd | 1115 | send_els->status = -EINVAL; |
1da177e4 | 1116 | |
c41f8cbd | 1117 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
1118 | goto skip_fsfstatus; |
1119 | ||
1120 | switch (header->fsf_status) { | |
1da177e4 | 1121 | case FSF_GOOD: |
c41f8cbd SS |
1122 | zfcp_san_dbf_event_els_response(req); |
1123 | send_els->status = 0; | |
1da177e4 | 1124 | break; |
1da177e4 | 1125 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 1126 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 1127 | break; |
1da177e4 | 1128 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1129 | switch (header->fsf_status_qual.word[0]){ |
1130 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
64b29a13 AH |
1131 | if (port && (send_els->ls_code != ZFCP_LS_ADISC)) |
1132 | zfcp_test_link(port); | |
c41f8cbd | 1133 | /*fall through */ |
1da177e4 | 1134 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1135 | case FSF_SQ_RETRY_IF_POSSIBLE: |
c41f8cbd | 1136 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1137 | break; |
1da177e4 LT |
1138 | } |
1139 | break; | |
1da177e4 | 1140 | case FSF_ELS_COMMAND_REJECTED: |
1da177e4 | 1141 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1142 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1143 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1144 | break; |
1da177e4 | 1145 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1146 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1147 | break; |
c41f8cbd SS |
1148 | case FSF_SBAL_MISMATCH: |
1149 | /* should never occure, avoided in zfcp_fsf_send_els */ | |
1150 | /* fall through */ | |
1da177e4 | 1151 | default: |
c41f8cbd | 1152 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1153 | break; |
1154 | } | |
1da177e4 | 1155 | skip_fsfstatus: |
aa551daf | 1156 | if (send_els->handler) |
1da177e4 | 1157 | send_els->handler(send_els->handler_data); |
c41f8cbd | 1158 | } |
1da177e4 | 1159 | |
c41f8cbd SS |
1160 | /** |
1161 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) | |
1162 | * @els: pointer to struct zfcp_send_els with data for the command | |
1163 | */ | |
1164 | int zfcp_fsf_send_els(struct zfcp_send_els *els) | |
1165 | { | |
1166 | struct zfcp_fsf_req *req; | |
1167 | struct zfcp_adapter *adapter = els->adapter; | |
1168 | struct fsf_qtcb_bottom_support *bottom; | |
1169 | int ret = -EIO; | |
1170 | ||
8fdf30d5 CS |
1171 | spin_lock_bh(&adapter->req_q_lock); |
1172 | if (zfcp_fsf_req_sbal_get(adapter)) | |
c41f8cbd SS |
1173 | goto out; |
1174 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS, | |
1175 | ZFCP_REQ_AUTO_CLEANUP, NULL); | |
025270f0 | 1176 | if (IS_ERR(req)) { |
c41f8cbd SS |
1177 | ret = PTR_ERR(req); |
1178 | goto out; | |
1179 | } | |
1180 | ||
39eb7e9a | 1181 | ret = zfcp_fsf_setup_ct_els_sbals(req, els->req, els->resp, 2); |
44cc76f2 | 1182 | |
c41f8cbd SS |
1183 | if (ret) |
1184 | goto failed_send; | |
1185 | ||
1186 | bottom = &req->qtcb->bottom.support; | |
1187 | req->handler = zfcp_fsf_send_els_handler; | |
1188 | bottom->d_id = els->d_id; | |
1189 | bottom->service_class = FSF_CLASS_3; | |
1190 | bottom->timeout = 2 * R_A_TOV; | |
1191 | req->data = els; | |
1192 | ||
1193 | zfcp_san_dbf_event_els_request(req); | |
1194 | ||
1195 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1196 | ret = zfcp_fsf_req_send(req); | |
1197 | if (ret) | |
1198 | goto failed_send; | |
1199 | ||
1200 | goto out; | |
1201 | ||
1202 | failed_send: | |
1203 | zfcp_fsf_req_free(req); | |
1204 | out: | |
8fdf30d5 | 1205 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 1206 | return ret; |
1da177e4 LT |
1207 | } |
1208 | ||
c41f8cbd | 1209 | int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1210 | { |
44cc76f2 | 1211 | struct qdio_buffer_element *sbale; |
c41f8cbd | 1212 | struct zfcp_fsf_req *req; |
52ef11a7 | 1213 | struct zfcp_adapter *adapter = erp_action->adapter; |
c41f8cbd SS |
1214 | int retval = -EIO; |
1215 | ||
0406289e | 1216 | spin_lock_bh(&adapter->req_q_lock); |
92cab0d9 | 1217 | if (zfcp_fsf_req_sbal_get(adapter)) |
c41f8cbd SS |
1218 | goto out; |
1219 | req = zfcp_fsf_req_create(adapter, | |
1220 | FSF_QTCB_EXCHANGE_CONFIG_DATA, | |
1221 | ZFCP_REQ_AUTO_CLEANUP, | |
1222 | adapter->pool.fsf_req_erp); | |
025270f0 | 1223 | if (IS_ERR(req)) { |
c41f8cbd SS |
1224 | retval = PTR_ERR(req); |
1225 | goto out; | |
1da177e4 LT |
1226 | } |
1227 | ||
c41f8cbd | 1228 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1229 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1230 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1231 | |
c41f8cbd | 1232 | req->qtcb->bottom.config.feature_selection = |
aef4a983 MS |
1233 | FSF_FEATURE_CFDC | |
1234 | FSF_FEATURE_LUN_SHARING | | |
9eb69aff | 1235 | FSF_FEATURE_NOTIFICATION_LOST | |
aef4a983 | 1236 | FSF_FEATURE_UPDATE_ALERT; |
c41f8cbd SS |
1237 | req->erp_action = erp_action; |
1238 | req->handler = zfcp_fsf_exchange_config_data_handler; | |
1239 | erp_action->fsf_req = req; | |
1da177e4 | 1240 | |
287ac01a | 1241 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1242 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1243 | if (retval) { |
c41f8cbd | 1244 | zfcp_fsf_req_free(req); |
1da177e4 | 1245 | erp_action->fsf_req = NULL; |
1da177e4 | 1246 | } |
c41f8cbd | 1247 | out: |
0406289e | 1248 | spin_unlock_bh(&adapter->req_q_lock); |
52ef11a7 SS |
1249 | return retval; |
1250 | } | |
1da177e4 | 1251 | |
c41f8cbd SS |
1252 | int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter, |
1253 | struct fsf_qtcb_bottom_config *data) | |
52ef11a7 | 1254 | { |
44cc76f2 | 1255 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1256 | struct zfcp_fsf_req *req = NULL; |
1257 | int retval = -EIO; | |
1258 | ||
0406289e | 1259 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 1260 | if (zfcp_fsf_req_sbal_get(adapter)) |
ada81b74 | 1261 | goto out_unlock; |
c41f8cbd SS |
1262 | |
1263 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA, | |
1264 | 0, NULL); | |
025270f0 | 1265 | if (IS_ERR(req)) { |
c41f8cbd | 1266 | retval = PTR_ERR(req); |
ada81b74 | 1267 | goto out_unlock; |
52ef11a7 SS |
1268 | } |
1269 | ||
c41f8cbd | 1270 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1271 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1272 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
c41f8cbd | 1273 | req->handler = zfcp_fsf_exchange_config_data_handler; |
52ef11a7 | 1274 | |
c41f8cbd | 1275 | req->qtcb->bottom.config.feature_selection = |
52ef11a7 SS |
1276 | FSF_FEATURE_CFDC | |
1277 | FSF_FEATURE_LUN_SHARING | | |
1278 | FSF_FEATURE_NOTIFICATION_LOST | | |
1279 | FSF_FEATURE_UPDATE_ALERT; | |
1280 | ||
1281 | if (data) | |
c41f8cbd | 1282 | req->data = data; |
52ef11a7 | 1283 | |
c41f8cbd SS |
1284 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
1285 | retval = zfcp_fsf_req_send(req); | |
0406289e | 1286 | spin_unlock_bh(&adapter->req_q_lock); |
553448f6 | 1287 | if (!retval) |
c41f8cbd SS |
1288 | wait_event(req->completion_wq, |
1289 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
52ef11a7 | 1290 | |
c41f8cbd | 1291 | zfcp_fsf_req_free(req); |
ada81b74 | 1292 | return retval; |
52ef11a7 | 1293 | |
ada81b74 CS |
1294 | out_unlock: |
1295 | spin_unlock_bh(&adapter->req_q_lock); | |
1da177e4 LT |
1296 | return retval; |
1297 | } | |
1298 | ||
1da177e4 LT |
1299 | /** |
1300 | * zfcp_fsf_exchange_port_data - request information about local port | |
aef4a983 | 1301 | * @erp_action: ERP action for the adapter for which port data is requested |
c41f8cbd | 1302 | * Returns: 0 on success, error otherwise |
1da177e4 | 1303 | */ |
c41f8cbd | 1304 | int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1305 | { |
44cc76f2 | 1306 | struct qdio_buffer_element *sbale; |
c41f8cbd | 1307 | struct zfcp_fsf_req *req; |
52ef11a7 | 1308 | struct zfcp_adapter *adapter = erp_action->adapter; |
c41f8cbd | 1309 | int retval = -EIO; |
1da177e4 | 1310 | |
553448f6 | 1311 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1312 | return -EOPNOTSUPP; |
1da177e4 | 1313 | |
0406289e | 1314 | spin_lock_bh(&adapter->req_q_lock); |
92cab0d9 | 1315 | if (zfcp_fsf_req_sbal_get(adapter)) |
c41f8cbd SS |
1316 | goto out; |
1317 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, | |
1318 | ZFCP_REQ_AUTO_CLEANUP, | |
1319 | adapter->pool.fsf_req_erp); | |
025270f0 | 1320 | if (IS_ERR(req)) { |
c41f8cbd SS |
1321 | retval = PTR_ERR(req); |
1322 | goto out; | |
aef4a983 MS |
1323 | } |
1324 | ||
c41f8cbd | 1325 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1326 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1327 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1328 | |
c41f8cbd SS |
1329 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1330 | req->erp_action = erp_action; | |
1331 | erp_action->fsf_req = req; | |
52ef11a7 | 1332 | |
287ac01a | 1333 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1334 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1335 | if (retval) { |
c41f8cbd | 1336 | zfcp_fsf_req_free(req); |
52ef11a7 SS |
1337 | erp_action->fsf_req = NULL; |
1338 | } | |
c41f8cbd | 1339 | out: |
0406289e | 1340 | spin_unlock_bh(&adapter->req_q_lock); |
52ef11a7 SS |
1341 | return retval; |
1342 | } | |
1343 | ||
52ef11a7 SS |
1344 | /** |
1345 | * zfcp_fsf_exchange_port_data_sync - request information about local port | |
c41f8cbd SS |
1346 | * @adapter: pointer to struct zfcp_adapter |
1347 | * @data: pointer to struct fsf_qtcb_bottom_port | |
1348 | * Returns: 0 on success, error otherwise | |
52ef11a7 | 1349 | */ |
c41f8cbd SS |
1350 | int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, |
1351 | struct fsf_qtcb_bottom_port *data) | |
52ef11a7 | 1352 | { |
44cc76f2 | 1353 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1354 | struct zfcp_fsf_req *req = NULL; |
1355 | int retval = -EIO; | |
52ef11a7 | 1356 | |
553448f6 | 1357 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1358 | return -EOPNOTSUPP; |
52ef11a7 | 1359 | |
0406289e | 1360 | spin_lock_bh(&adapter->req_q_lock); |
92cab0d9 | 1361 | if (zfcp_fsf_req_sbal_get(adapter)) |
ada81b74 | 1362 | goto out_unlock; |
c41f8cbd SS |
1363 | |
1364 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, 0, | |
1365 | NULL); | |
025270f0 | 1366 | if (IS_ERR(req)) { |
c41f8cbd | 1367 | retval = PTR_ERR(req); |
ada81b74 | 1368 | goto out_unlock; |
1da177e4 LT |
1369 | } |
1370 | ||
52ef11a7 | 1371 | if (data) |
c41f8cbd | 1372 | req->data = data; |
52ef11a7 | 1373 | |
c41f8cbd | 1374 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1375 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1376 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1377 | ||
c41f8cbd SS |
1378 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1379 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1380 | retval = zfcp_fsf_req_send(req); | |
0406289e | 1381 | spin_unlock_bh(&adapter->req_q_lock); |
ada81b74 | 1382 | |
553448f6 | 1383 | if (!retval) |
c41f8cbd SS |
1384 | wait_event(req->completion_wq, |
1385 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
1386 | zfcp_fsf_req_free(req); | |
1da177e4 | 1387 | |
1da177e4 | 1388 | return retval; |
ada81b74 CS |
1389 | |
1390 | out_unlock: | |
1391 | spin_unlock_bh(&adapter->req_q_lock); | |
1392 | return retval; | |
1da177e4 LT |
1393 | } |
1394 | ||
c41f8cbd | 1395 | static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1396 | { |
c41f8cbd SS |
1397 | struct zfcp_port *port = req->data; |
1398 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1399 | struct fsf_plogi *plogi; |
1da177e4 | 1400 | |
c41f8cbd | 1401 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1402 | return; |
1da177e4 | 1403 | |
1da177e4 | 1404 | switch (header->fsf_status) { |
1da177e4 | 1405 | case FSF_PORT_ALREADY_OPEN: |
1da177e4 | 1406 | break; |
1da177e4 | 1407 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1408 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1409 | break; |
1da177e4 | 1410 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: |
c41f8cbd | 1411 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 1412 | "Not enough FCP adapter resources to open " |
7ba58c9c SS |
1413 | "remote port 0x%016Lx\n", |
1414 | (unsigned long long)port->wwpn); | |
5ffd51a5 | 1415 | zfcp_erp_port_failed(port, "fsoph_1", req); |
c41f8cbd | 1416 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1417 | break; |
1da177e4 | 1418 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1419 | switch (header->fsf_status_qual.word[0]) { |
1420 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1421 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1422 | case FSF_SQ_NO_RETRY_POSSIBLE: |
c41f8cbd | 1423 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1424 | break; |
1425 | } | |
1426 | break; | |
1da177e4 | 1427 | case FSF_GOOD: |
1da177e4 | 1428 | port->handle = header->port_handle; |
1da177e4 LT |
1429 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN | |
1430 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
d736a27b AH |
1431 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
1432 | ZFCP_STATUS_COMMON_ACCESS_BOXED, | |
1433 | &port->status); | |
1da177e4 LT |
1434 | /* check whether D_ID has changed during open */ |
1435 | /* | |
1436 | * FIXME: This check is not airtight, as the FCP channel does | |
1437 | * not monitor closures of target port connections caused on | |
1438 | * the remote side. Thus, they might miss out on invalidating | |
1439 | * locally cached WWPNs (and other N_Port parameters) of gone | |
1440 | * target ports. So, our heroic attempt to make things safe | |
1441 | * could be undermined by 'open port' response data tagged with | |
1442 | * obsolete WWPNs. Another reason to monitor potential | |
1443 | * connection closures ourself at least (by interpreting | |
1444 | * incoming ELS' and unsolicited status). It just crosses my | |
1445 | * mind that one should be able to cross-check by means of | |
1446 | * another GID_PN straight after a port has been opened. | |
1447 | * Alternately, an ADISC/PDISC ELS should suffice, as well. | |
1448 | */ | |
c41f8cbd | 1449 | plogi = (struct fsf_plogi *) req->qtcb->bottom.support.els; |
39eb7e9a CS |
1450 | if (req->qtcb->bottom.support.els1_length >= |
1451 | FSF_PLOGI_MIN_LEN) { | |
c41f8cbd | 1452 | if (plogi->serv_param.wwpn != port->wwpn) |
b98478d7 | 1453 | port->d_id = 0; |
c41f8cbd SS |
1454 | else { |
1455 | port->wwnn = plogi->serv_param.wwnn; | |
1456 | zfcp_fc_plogi_evaluate(port, plogi); | |
1da177e4 LT |
1457 | } |
1458 | } | |
1459 | break; | |
1da177e4 | 1460 | case FSF_UNKNOWN_OP_SUBTYPE: |
c41f8cbd | 1461 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1462 | break; |
1463 | } | |
1da177e4 LT |
1464 | } |
1465 | ||
c41f8cbd SS |
1466 | /** |
1467 | * zfcp_fsf_open_port - create and send open port request | |
1468 | * @erp_action: pointer to struct zfcp_erp_action | |
1469 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1470 | */ |
c41f8cbd | 1471 | int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1472 | { |
44cc76f2 | 1473 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1474 | struct zfcp_adapter *adapter = erp_action->adapter; |
1475 | struct zfcp_fsf_req *req; | |
1476 | int retval = -EIO; | |
1477 | ||
0406289e | 1478 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1479 | if (zfcp_fsf_req_sbal_get(adapter)) |
1480 | goto out; | |
1481 | ||
1482 | req = zfcp_fsf_req_create(adapter, | |
1483 | FSF_QTCB_OPEN_PORT_WITH_DID, | |
1484 | ZFCP_REQ_AUTO_CLEANUP, | |
1485 | adapter->pool.fsf_req_erp); | |
025270f0 | 1486 | if (IS_ERR(req)) { |
c41f8cbd | 1487 | retval = PTR_ERR(req); |
1da177e4 | 1488 | goto out; |
c41f8cbd | 1489 | } |
1da177e4 | 1490 | |
c41f8cbd | 1491 | sbale = zfcp_qdio_sbale_req(req); |
1da177e4 LT |
1492 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1493 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1494 | ||
c41f8cbd SS |
1495 | req->handler = zfcp_fsf_open_port_handler; |
1496 | req->qtcb->bottom.support.d_id = erp_action->port->d_id; | |
1497 | req->data = erp_action->port; | |
1498 | req->erp_action = erp_action; | |
1499 | erp_action->fsf_req = req; | |
c41f8cbd | 1500 | |
287ac01a | 1501 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1502 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1503 | if (retval) { |
c41f8cbd | 1504 | zfcp_fsf_req_free(req); |
1da177e4 | 1505 | erp_action->fsf_req = NULL; |
1da177e4 | 1506 | } |
c41f8cbd | 1507 | out: |
0406289e | 1508 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1509 | return retval; |
1510 | } | |
1511 | ||
c41f8cbd | 1512 | static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1513 | { |
c41f8cbd | 1514 | struct zfcp_port *port = req->data; |
1da177e4 | 1515 | |
c41f8cbd | 1516 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1517 | return; |
1da177e4 | 1518 | |
c41f8cbd | 1519 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1520 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 1521 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1", req); |
c41f8cbd | 1522 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1523 | break; |
1da177e4 | 1524 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 | 1525 | break; |
1da177e4 | 1526 | case FSF_GOOD: |
5ffd51a5 | 1527 | zfcp_erp_modify_port_status(port, "fscph_2", req, |
1da177e4 LT |
1528 | ZFCP_STATUS_COMMON_OPEN, |
1529 | ZFCP_CLEAR); | |
1da177e4 | 1530 | break; |
1da177e4 | 1531 | } |
1da177e4 LT |
1532 | } |
1533 | ||
c41f8cbd SS |
1534 | /** |
1535 | * zfcp_fsf_close_port - create and send close port request | |
1536 | * @erp_action: pointer to struct zfcp_erp_action | |
1537 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1538 | */ |
c41f8cbd | 1539 | int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1540 | { |
44cc76f2 | 1541 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1542 | struct zfcp_adapter *adapter = erp_action->adapter; |
1543 | struct zfcp_fsf_req *req; | |
1544 | int retval = -EIO; | |
1545 | ||
0406289e | 1546 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1547 | if (zfcp_fsf_req_sbal_get(adapter)) |
1548 | goto out; | |
1549 | ||
1550 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT, | |
1551 | ZFCP_REQ_AUTO_CLEANUP, | |
1552 | adapter->pool.fsf_req_erp); | |
025270f0 | 1553 | if (IS_ERR(req)) { |
c41f8cbd | 1554 | retval = PTR_ERR(req); |
1da177e4 | 1555 | goto out; |
c41f8cbd | 1556 | } |
1da177e4 | 1557 | |
c41f8cbd | 1558 | sbale = zfcp_qdio_sbale_req(req); |
1da177e4 LT |
1559 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1560 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1561 | ||
c41f8cbd SS |
1562 | req->handler = zfcp_fsf_close_port_handler; |
1563 | req->data = erp_action->port; | |
1564 | req->erp_action = erp_action; | |
1565 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1566 | erp_action->fsf_req = req; | |
c41f8cbd | 1567 | |
287ac01a | 1568 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1569 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1570 | if (retval) { |
c41f8cbd | 1571 | zfcp_fsf_req_free(req); |
1da177e4 | 1572 | erp_action->fsf_req = NULL; |
1da177e4 | 1573 | } |
c41f8cbd | 1574 | out: |
0406289e | 1575 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1576 | return retval; |
1577 | } | |
1578 | ||
5ab944f9 SS |
1579 | static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req) |
1580 | { | |
1581 | struct zfcp_wka_port *wka_port = req->data; | |
1582 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1583 | ||
1584 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
1585 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1586 | goto out; | |
1587 | } | |
1588 | ||
1589 | switch (header->fsf_status) { | |
1590 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: | |
1591 | dev_warn(&req->adapter->ccw_device->dev, | |
1592 | "Opening WKA port 0x%x failed\n", wka_port->d_id); | |
1593 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1594 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1595 | case FSF_ACCESS_DENIED: | |
1596 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1597 | break; | |
1598 | case FSF_PORT_ALREADY_OPEN: | |
1c1cba17 | 1599 | break; |
5ab944f9 SS |
1600 | case FSF_GOOD: |
1601 | wka_port->handle = header->port_handle; | |
1602 | wka_port->status = ZFCP_WKA_PORT_ONLINE; | |
1603 | } | |
1604 | out: | |
1605 | wake_up(&wka_port->completion_wq); | |
1606 | } | |
1607 | ||
1608 | /** | |
1609 | * zfcp_fsf_open_wka_port - create and send open wka-port request | |
1610 | * @wka_port: pointer to struct zfcp_wka_port | |
1611 | * Returns: 0 on success, error otherwise | |
1612 | */ | |
1613 | int zfcp_fsf_open_wka_port(struct zfcp_wka_port *wka_port) | |
1614 | { | |
1615 | struct qdio_buffer_element *sbale; | |
1616 | struct zfcp_adapter *adapter = wka_port->adapter; | |
1617 | struct zfcp_fsf_req *req; | |
1618 | int retval = -EIO; | |
1619 | ||
0406289e | 1620 | spin_lock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1621 | if (zfcp_fsf_req_sbal_get(adapter)) |
1622 | goto out; | |
1623 | ||
1624 | req = zfcp_fsf_req_create(adapter, | |
1625 | FSF_QTCB_OPEN_PORT_WITH_DID, | |
1626 | ZFCP_REQ_AUTO_CLEANUP, | |
1627 | adapter->pool.fsf_req_erp); | |
1628 | if (unlikely(IS_ERR(req))) { | |
1629 | retval = PTR_ERR(req); | |
1630 | goto out; | |
1631 | } | |
1632 | ||
1633 | sbale = zfcp_qdio_sbale_req(req); | |
1634 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1635 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1636 | ||
1637 | req->handler = zfcp_fsf_open_wka_port_handler; | |
1638 | req->qtcb->bottom.support.d_id = wka_port->d_id; | |
1639 | req->data = wka_port; | |
1640 | ||
1641 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1642 | retval = zfcp_fsf_req_send(req); | |
1643 | if (retval) | |
1644 | zfcp_fsf_req_free(req); | |
1645 | out: | |
0406289e | 1646 | spin_unlock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1647 | return retval; |
1648 | } | |
1649 | ||
1650 | static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req) | |
1651 | { | |
1652 | struct zfcp_wka_port *wka_port = req->data; | |
1653 | ||
1654 | if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) { | |
1655 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
5ffd51a5 | 1656 | zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1", req); |
5ab944f9 SS |
1657 | } |
1658 | ||
1659 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1660 | wake_up(&wka_port->completion_wq); | |
1661 | } | |
1662 | ||
1663 | /** | |
1664 | * zfcp_fsf_close_wka_port - create and send close wka port request | |
1665 | * @erp_action: pointer to struct zfcp_erp_action | |
1666 | * Returns: 0 on success, error otherwise | |
1667 | */ | |
1668 | int zfcp_fsf_close_wka_port(struct zfcp_wka_port *wka_port) | |
1669 | { | |
1670 | struct qdio_buffer_element *sbale; | |
1671 | struct zfcp_adapter *adapter = wka_port->adapter; | |
1672 | struct zfcp_fsf_req *req; | |
1673 | int retval = -EIO; | |
1674 | ||
0406289e | 1675 | spin_lock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1676 | if (zfcp_fsf_req_sbal_get(adapter)) |
1677 | goto out; | |
1678 | ||
1679 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT, | |
1680 | ZFCP_REQ_AUTO_CLEANUP, | |
1681 | adapter->pool.fsf_req_erp); | |
1682 | if (unlikely(IS_ERR(req))) { | |
1683 | retval = PTR_ERR(req); | |
1684 | goto out; | |
1685 | } | |
1686 | ||
1687 | sbale = zfcp_qdio_sbale_req(req); | |
1688 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1689 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1690 | ||
1691 | req->handler = zfcp_fsf_close_wka_port_handler; | |
1692 | req->data = wka_port; | |
1693 | req->qtcb->header.port_handle = wka_port->handle; | |
1694 | ||
1695 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1696 | retval = zfcp_fsf_req_send(req); | |
1697 | if (retval) | |
1698 | zfcp_fsf_req_free(req); | |
1699 | out: | |
0406289e | 1700 | spin_unlock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1701 | return retval; |
1702 | } | |
1703 | ||
c41f8cbd | 1704 | static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1705 | { |
c41f8cbd SS |
1706 | struct zfcp_port *port = req->data; |
1707 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1708 | struct zfcp_unit *unit; |
1da177e4 | 1709 | |
c41f8cbd | 1710 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
a5b11dda | 1711 | return; |
1da177e4 | 1712 | |
1da177e4 | 1713 | switch (header->fsf_status) { |
1da177e4 | 1714 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 1715 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1", req); |
c41f8cbd | 1716 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1717 | break; |
1da177e4 | 1718 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1719 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1720 | break; |
1da177e4 | 1721 | case FSF_PORT_BOXED: |
5ffd51a5 | 1722 | zfcp_erp_port_boxed(port, "fscpph2", req); |
c41f8cbd SS |
1723 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
1724 | ZFCP_STATUS_FSFREQ_RETRY; | |
5c815d15 CS |
1725 | /* can't use generic zfcp_erp_modify_port_status because |
1726 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */ | |
1727 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
1728 | list_for_each_entry(unit, &port->unit_list_head, list) | |
1729 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, | |
1730 | &unit->status); | |
1da177e4 | 1731 | break; |
1da177e4 | 1732 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1733 | switch (header->fsf_status_qual.word[0]) { |
1734 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
c41f8cbd | 1735 | /* fall through */ |
1da177e4 | 1736 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1737 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1738 | break; |
1da177e4 LT |
1739 | } |
1740 | break; | |
1da177e4 | 1741 | case FSF_GOOD: |
1da177e4 LT |
1742 | /* can't use generic zfcp_erp_modify_port_status because |
1743 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port | |
1744 | */ | |
1745 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
1746 | list_for_each_entry(unit, &port->unit_list_head, list) | |
c41f8cbd SS |
1747 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, |
1748 | &unit->status); | |
1da177e4 | 1749 | break; |
1da177e4 | 1750 | } |
1da177e4 LT |
1751 | } |
1752 | ||
c41f8cbd SS |
1753 | /** |
1754 | * zfcp_fsf_close_physical_port - close physical port | |
1755 | * @erp_action: pointer to struct zfcp_erp_action | |
1756 | * Returns: 0 on success | |
1da177e4 | 1757 | */ |
c41f8cbd | 1758 | int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1759 | { |
44cc76f2 | 1760 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1761 | struct zfcp_adapter *adapter = erp_action->adapter; |
1762 | struct zfcp_fsf_req *req; | |
1763 | int retval = -EIO; | |
1764 | ||
0406289e | 1765 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 1766 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 1767 | goto out; |
1da177e4 | 1768 | |
c41f8cbd SS |
1769 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PHYSICAL_PORT, |
1770 | ZFCP_REQ_AUTO_CLEANUP, | |
1771 | adapter->pool.fsf_req_erp); | |
025270f0 | 1772 | if (IS_ERR(req)) { |
c41f8cbd SS |
1773 | retval = PTR_ERR(req); |
1774 | goto out; | |
1775 | } | |
1da177e4 | 1776 | |
c41f8cbd SS |
1777 | sbale = zfcp_qdio_sbale_req(req); |
1778 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1779 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1780 | |
c41f8cbd SS |
1781 | req->data = erp_action->port; |
1782 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1783 | req->erp_action = erp_action; | |
1784 | req->handler = zfcp_fsf_close_physical_port_handler; | |
1785 | erp_action->fsf_req = req; | |
c41f8cbd | 1786 | |
287ac01a | 1787 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1788 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1789 | if (retval) { |
c41f8cbd | 1790 | zfcp_fsf_req_free(req); |
1da177e4 | 1791 | erp_action->fsf_req = NULL; |
1da177e4 | 1792 | } |
c41f8cbd | 1793 | out: |
0406289e | 1794 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1795 | return retval; |
1796 | } | |
1797 | ||
c41f8cbd | 1798 | static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1799 | { |
c41f8cbd SS |
1800 | struct zfcp_adapter *adapter = req->adapter; |
1801 | struct zfcp_unit *unit = req->data; | |
1802 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1803 | struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support; | |
1804 | struct fsf_queue_designator *queue_designator = | |
1805 | &header->fsf_status_qual.fsf_queue_designator; | |
aef4a983 | 1806 | int exclusive, readwrite; |
1da177e4 | 1807 | |
c41f8cbd | 1808 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1809 | return; |
1da177e4 | 1810 | |
1da177e4 | 1811 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
b64ddf96 | 1812 | ZFCP_STATUS_COMMON_ACCESS_BOXED | |
1da177e4 LT |
1813 | ZFCP_STATUS_UNIT_SHARED | |
1814 | ZFCP_STATUS_UNIT_READONLY, | |
1815 | &unit->status); | |
1816 | ||
1da177e4 LT |
1817 | switch (header->fsf_status) { |
1818 | ||
1819 | case FSF_PORT_HANDLE_NOT_VALID: | |
5ffd51a5 | 1820 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fsouh_1", req); |
c41f8cbd | 1821 | /* fall through */ |
1da177e4 | 1822 | case FSF_LUN_ALREADY_OPEN: |
1da177e4 | 1823 | break; |
1da177e4 | 1824 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1825 | zfcp_fsf_access_denied_unit(req, unit); |
1da177e4 | 1826 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
553448f6 | 1827 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); |
1da177e4 | 1828 | break; |
1da177e4 | 1829 | case FSF_PORT_BOXED: |
5ffd51a5 | 1830 | zfcp_erp_port_boxed(unit->port, "fsouh_2", req); |
c41f8cbd SS |
1831 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
1832 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 1833 | break; |
1da177e4 | 1834 | case FSF_LUN_SHARING_VIOLATION: |
c41f8cbd | 1835 | if (header->fsf_status_qual.word[0]) |
553448f6 | 1836 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1837 | "LUN 0x%Lx on port 0x%Lx is already in " |
1838 | "use by CSS%d, MIF Image ID %x\n", | |
7ba58c9c SS |
1839 | (unsigned long long)unit->fcp_lun, |
1840 | (unsigned long long)unit->port->wwpn, | |
ff3b24fa CS |
1841 | queue_designator->cssid, |
1842 | queue_designator->hla); | |
c41f8cbd | 1843 | else |
553448f6 CS |
1844 | zfcp_act_eval_err(adapter, |
1845 | header->fsf_status_qual.word[2]); | |
5ffd51a5 | 1846 | zfcp_erp_unit_access_denied(unit, "fsouh_3", req); |
1da177e4 LT |
1847 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
1848 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); | |
c41f8cbd | 1849 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1850 | break; |
1da177e4 | 1851 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: |
c41f8cbd | 1852 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1853 | "No handle is available for LUN " |
1854 | "0x%016Lx on port 0x%016Lx\n", | |
7ba58c9c SS |
1855 | (unsigned long long)unit->fcp_lun, |
1856 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 1857 | zfcp_erp_unit_failed(unit, "fsouh_4", req); |
c41f8cbd SS |
1858 | /* fall through */ |
1859 | case FSF_INVALID_COMMAND_OPTION: | |
1860 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1861 | break; |
1da177e4 | 1862 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1863 | switch (header->fsf_status_qual.word[0]) { |
1864 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
65a8d4e1 | 1865 | zfcp_test_link(unit->port); |
c41f8cbd | 1866 | /* fall through */ |
1da177e4 | 1867 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1868 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1869 | break; |
1da177e4 LT |
1870 | } |
1871 | break; | |
1872 | ||
1da177e4 | 1873 | case FSF_GOOD: |
1da177e4 | 1874 | unit->handle = header->lun_handle; |
1da177e4 | 1875 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
aef4a983 MS |
1876 | |
1877 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) && | |
1878 | (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) && | |
1879 | (adapter->ccw_device->id.dev_model != ZFCP_DEVICE_MODEL_PRIV)) { | |
1880 | exclusive = (bottom->lun_access_info & | |
1881 | FSF_UNIT_ACCESS_EXCLUSIVE); | |
1882 | readwrite = (bottom->lun_access_info & | |
1883 | FSF_UNIT_ACCESS_OUTBOUND_TRANSFER); | |
1884 | ||
1da177e4 LT |
1885 | if (!exclusive) |
1886 | atomic_set_mask(ZFCP_STATUS_UNIT_SHARED, | |
1887 | &unit->status); | |
1888 | ||
1889 | if (!readwrite) { | |
1890 | atomic_set_mask(ZFCP_STATUS_UNIT_READONLY, | |
1891 | &unit->status); | |
c41f8cbd | 1892 | dev_info(&adapter->ccw_device->dev, |
ff3b24fa CS |
1893 | "SCSI device at LUN 0x%016Lx on port " |
1894 | "0x%016Lx opened read-only\n", | |
7ba58c9c SS |
1895 | (unsigned long long)unit->fcp_lun, |
1896 | (unsigned long long)unit->port->wwpn); | |
1da177e4 LT |
1897 | } |
1898 | ||
1899 | if (exclusive && !readwrite) { | |
c41f8cbd | 1900 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
1901 | "Exclusive read-only access not " |
1902 | "supported (unit 0x%016Lx, " | |
1903 | "port 0x%016Lx)\n", | |
7ba58c9c SS |
1904 | (unsigned long long)unit->fcp_lun, |
1905 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 1906 | zfcp_erp_unit_failed(unit, "fsouh_5", req); |
c41f8cbd | 1907 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
5ffd51a5 | 1908 | zfcp_erp_unit_shutdown(unit, 0, "fsouh_6", req); |
1da177e4 | 1909 | } else if (!exclusive && readwrite) { |
c41f8cbd | 1910 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
1911 | "Shared read-write access not " |
1912 | "supported (unit 0x%016Lx, port " | |
27c3f0a6 | 1913 | "0x%016Lx)\n", |
7ba58c9c SS |
1914 | (unsigned long long)unit->fcp_lun, |
1915 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 1916 | zfcp_erp_unit_failed(unit, "fsouh_7", req); |
c41f8cbd | 1917 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
5ffd51a5 | 1918 | zfcp_erp_unit_shutdown(unit, 0, "fsouh_8", req); |
1da177e4 LT |
1919 | } |
1920 | } | |
1da177e4 | 1921 | break; |
1da177e4 | 1922 | } |
1da177e4 LT |
1923 | } |
1924 | ||
c41f8cbd SS |
1925 | /** |
1926 | * zfcp_fsf_open_unit - open unit | |
1927 | * @erp_action: pointer to struct zfcp_erp_action | |
1928 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1929 | */ |
c41f8cbd | 1930 | int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) |
1da177e4 | 1931 | { |
44cc76f2 | 1932 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1933 | struct zfcp_adapter *adapter = erp_action->adapter; |
1934 | struct zfcp_fsf_req *req; | |
1935 | int retval = -EIO; | |
1936 | ||
0406289e | 1937 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 1938 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 1939 | goto out; |
1da177e4 | 1940 | |
c41f8cbd SS |
1941 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_OPEN_LUN, |
1942 | ZFCP_REQ_AUTO_CLEANUP, | |
1943 | adapter->pool.fsf_req_erp); | |
025270f0 | 1944 | if (IS_ERR(req)) { |
c41f8cbd SS |
1945 | retval = PTR_ERR(req); |
1946 | goto out; | |
1947 | } | |
1948 | ||
1949 | sbale = zfcp_qdio_sbale_req(req); | |
1da177e4 LT |
1950 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1951 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1952 | ||
c41f8cbd SS |
1953 | req->qtcb->header.port_handle = erp_action->port->handle; |
1954 | req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun; | |
1955 | req->handler = zfcp_fsf_open_unit_handler; | |
1956 | req->data = erp_action->unit; | |
1957 | req->erp_action = erp_action; | |
1958 | erp_action->fsf_req = req; | |
1959 | ||
1960 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) | |
1961 | req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING; | |
1962 | ||
287ac01a | 1963 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1964 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1965 | if (retval) { |
c41f8cbd | 1966 | zfcp_fsf_req_free(req); |
1da177e4 | 1967 | erp_action->fsf_req = NULL; |
1da177e4 | 1968 | } |
c41f8cbd | 1969 | out: |
0406289e | 1970 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1971 | return retval; |
1972 | } | |
1973 | ||
c41f8cbd | 1974 | static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1975 | { |
c41f8cbd | 1976 | struct zfcp_unit *unit = req->data; |
1da177e4 | 1977 | |
c41f8cbd | 1978 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1979 | return; |
1da177e4 | 1980 | |
c41f8cbd | 1981 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1982 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 1983 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fscuh_1", req); |
c41f8cbd | 1984 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1985 | break; |
1da177e4 | 1986 | case FSF_LUN_HANDLE_NOT_VALID: |
5ffd51a5 | 1987 | zfcp_erp_port_reopen(unit->port, 0, "fscuh_2", req); |
c41f8cbd | 1988 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1989 | break; |
1da177e4 | 1990 | case FSF_PORT_BOXED: |
5ffd51a5 | 1991 | zfcp_erp_port_boxed(unit->port, "fscuh_3", req); |
c41f8cbd SS |
1992 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
1993 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 1994 | break; |
1da177e4 | 1995 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 1996 | switch (req->qtcb->header.fsf_status_qual.word[0]) { |
1da177e4 | 1997 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
65a8d4e1 | 1998 | zfcp_test_link(unit->port); |
c41f8cbd | 1999 | /* fall through */ |
1da177e4 | 2000 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 2001 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
2002 | break; |
2003 | } | |
2004 | break; | |
1da177e4 | 2005 | case FSF_GOOD: |
1da177e4 | 2006 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
1da177e4 | 2007 | break; |
1da177e4 | 2008 | } |
1da177e4 LT |
2009 | } |
2010 | ||
2011 | /** | |
c41f8cbd SS |
2012 | * zfcp_fsf_close_unit - close zfcp unit |
2013 | * @erp_action: pointer to struct zfcp_unit | |
2014 | * Returns: 0 on success, error otherwise | |
1da177e4 | 2015 | */ |
c41f8cbd | 2016 | int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) |
1da177e4 | 2017 | { |
44cc76f2 | 2018 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2019 | struct zfcp_adapter *adapter = erp_action->adapter; |
2020 | struct zfcp_fsf_req *req; | |
2021 | int retval = -EIO; | |
1da177e4 | 2022 | |
0406289e | 2023 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 2024 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 2025 | goto out; |
c41f8cbd SS |
2026 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_LUN, |
2027 | ZFCP_REQ_AUTO_CLEANUP, | |
2028 | adapter->pool.fsf_req_erp); | |
025270f0 | 2029 | if (IS_ERR(req)) { |
c41f8cbd SS |
2030 | retval = PTR_ERR(req); |
2031 | goto out; | |
2032 | } | |
1da177e4 | 2033 | |
c41f8cbd SS |
2034 | sbale = zfcp_qdio_sbale_req(req); |
2035 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1da177e4 LT |
2036 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; |
2037 | ||
c41f8cbd SS |
2038 | req->qtcb->header.port_handle = erp_action->port->handle; |
2039 | req->qtcb->header.lun_handle = erp_action->unit->handle; | |
2040 | req->handler = zfcp_fsf_close_unit_handler; | |
2041 | req->data = erp_action->unit; | |
2042 | req->erp_action = erp_action; | |
2043 | erp_action->fsf_req = req; | |
fdf23452 | 2044 | |
287ac01a | 2045 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
2046 | retval = zfcp_fsf_req_send(req); |
2047 | if (retval) { | |
2048 | zfcp_fsf_req_free(req); | |
2049 | erp_action->fsf_req = NULL; | |
2050 | } | |
2051 | out: | |
0406289e | 2052 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 2053 | return retval; |
1da177e4 LT |
2054 | } |
2055 | ||
c9615858 CS |
2056 | static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat) |
2057 | { | |
2058 | lat_rec->sum += lat; | |
c41f8cbd SS |
2059 | lat_rec->min = min(lat_rec->min, lat); |
2060 | lat_rec->max = max(lat_rec->max, lat); | |
c9615858 CS |
2061 | } |
2062 | ||
c41f8cbd | 2063 | static void zfcp_fsf_req_latency(struct zfcp_fsf_req *req) |
c9615858 CS |
2064 | { |
2065 | struct fsf_qual_latency_info *lat_inf; | |
2066 | struct latency_cont *lat; | |
c41f8cbd | 2067 | struct zfcp_unit *unit = req->unit; |
c9615858 | 2068 | |
c41f8cbd | 2069 | lat_inf = &req->qtcb->prefix.prot_status_qual.latency_info; |
c9615858 | 2070 | |
c41f8cbd | 2071 | switch (req->qtcb->bottom.io.data_direction) { |
c9615858 CS |
2072 | case FSF_DATADIR_READ: |
2073 | lat = &unit->latencies.read; | |
2074 | break; | |
2075 | case FSF_DATADIR_WRITE: | |
2076 | lat = &unit->latencies.write; | |
2077 | break; | |
2078 | case FSF_DATADIR_CMND: | |
2079 | lat = &unit->latencies.cmd; | |
2080 | break; | |
2081 | default: | |
2082 | return; | |
2083 | } | |
2084 | ||
49f0f01c | 2085 | spin_lock(&unit->latencies.lock); |
c9615858 CS |
2086 | zfcp_fsf_update_lat(&lat->channel, lat_inf->channel_lat); |
2087 | zfcp_fsf_update_lat(&lat->fabric, lat_inf->fabric_lat); | |
2088 | lat->counter++; | |
49f0f01c | 2089 | spin_unlock(&unit->latencies.lock); |
1da177e4 LT |
2090 | } |
2091 | ||
0997f1c5 SR |
2092 | #ifdef CONFIG_BLK_DEV_IO_TRACE |
2093 | static void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req) | |
2094 | { | |
2095 | struct fsf_qual_latency_info *lat_inf; | |
2096 | struct scsi_cmnd *scsi_cmnd = (struct scsi_cmnd *)fsf_req->data; | |
2097 | struct request *req = scsi_cmnd->request; | |
2098 | struct zfcp_blk_drv_data trace; | |
2099 | int ticks = fsf_req->adapter->timer_ticks; | |
2100 | ||
2101 | trace.flags = 0; | |
2102 | trace.magic = ZFCP_BLK_DRV_DATA_MAGIC; | |
2103 | if (fsf_req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) { | |
2104 | trace.flags |= ZFCP_BLK_LAT_VALID; | |
2105 | lat_inf = &fsf_req->qtcb->prefix.prot_status_qual.latency_info; | |
2106 | trace.channel_lat = lat_inf->channel_lat * ticks; | |
2107 | trace.fabric_lat = lat_inf->fabric_lat * ticks; | |
2108 | } | |
2109 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
2110 | trace.flags |= ZFCP_BLK_REQ_ERROR; | |
2111 | trace.inb_usage = fsf_req->qdio_inb_usage; | |
2112 | trace.outb_usage = fsf_req->qdio_outb_usage; | |
2113 | ||
2114 | blk_add_driver_data(req->q, req, &trace, sizeof(trace)); | |
2115 | } | |
2116 | #else | |
2117 | static inline void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req) | |
2118 | { | |
2119 | } | |
2120 | #endif | |
2121 | ||
c41f8cbd | 2122 | static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2123 | { |
0ac55aa9 | 2124 | struct scsi_cmnd *scpnt; |
1da177e4 | 2125 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) |
c41f8cbd | 2126 | &(req->qtcb->bottom.io.fcp_rsp); |
1da177e4 | 2127 | u32 sns_len; |
f76af7d7 | 2128 | char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; |
1da177e4 | 2129 | unsigned long flags; |
1da177e4 | 2130 | |
c41f8cbd SS |
2131 | read_lock_irqsave(&req->adapter->abort_lock, flags); |
2132 | ||
0ac55aa9 SS |
2133 | scpnt = req->data; |
2134 | if (unlikely(!scpnt)) { | |
2135 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); | |
2136 | return; | |
2137 | } | |
2138 | ||
c41f8cbd | 2139 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ABORTED)) { |
feac6a07 | 2140 | set_host_byte(scpnt, DID_SOFT_ERROR); |
1da177e4 LT |
2141 | goto skip_fsfstatus; |
2142 | } | |
2143 | ||
c41f8cbd | 2144 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { |
feac6a07 | 2145 | set_host_byte(scpnt, DID_ERROR); |
1da177e4 LT |
2146 | goto skip_fsfstatus; |
2147 | } | |
2148 | ||
feac6a07 | 2149 | set_msg_byte(scpnt, COMMAND_COMPLETE); |
1da177e4 | 2150 | |
1da177e4 | 2151 | scpnt->result |= fcp_rsp_iu->scsi_status; |
1da177e4 | 2152 | |
c41f8cbd SS |
2153 | if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) |
2154 | zfcp_fsf_req_latency(req); | |
c9615858 | 2155 | |
0997f1c5 SR |
2156 | zfcp_fsf_trace_latency(req); |
2157 | ||
1da177e4 | 2158 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) { |
c41f8cbd | 2159 | if (fcp_rsp_info[3] == RSP_CODE_GOOD) |
feac6a07 | 2160 | set_host_byte(scpnt, DID_OK); |
c41f8cbd | 2161 | else { |
feac6a07 | 2162 | set_host_byte(scpnt, DID_ERROR); |
6f71d9bc | 2163 | goto skip_fsfstatus; |
1da177e4 LT |
2164 | } |
2165 | } | |
2166 | ||
1da177e4 | 2167 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_sns_len_valid)) { |
c41f8cbd SS |
2168 | sns_len = FSF_FCP_RSP_SIZE - sizeof(struct fcp_rsp_iu) + |
2169 | fcp_rsp_iu->fcp_rsp_len; | |
1da177e4 | 2170 | sns_len = min(sns_len, (u32) SCSI_SENSE_BUFFERSIZE); |
1da177e4 | 2171 | sns_len = min(sns_len, fcp_rsp_iu->fcp_sns_len); |
1da177e4 | 2172 | |
9d058ecf | 2173 | memcpy(scpnt->sense_buffer, |
1da177e4 | 2174 | zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len); |
1da177e4 LT |
2175 | } |
2176 | ||
1da177e4 | 2177 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_under)) { |
7936a892 FT |
2178 | scsi_set_resid(scpnt, fcp_rsp_iu->fcp_resid); |
2179 | if (scsi_bufflen(scpnt) - scsi_get_resid(scpnt) < | |
2180 | scpnt->underflow) | |
feac6a07 | 2181 | set_host_byte(scpnt, DID_ERROR); |
1da177e4 | 2182 | } |
c41f8cbd | 2183 | skip_fsfstatus: |
8a36e453 | 2184 | if (scpnt->result != 0) |
c41f8cbd | 2185 | zfcp_scsi_dbf_event_result("erro", 3, req->adapter, scpnt, req); |
8a36e453 | 2186 | else if (scpnt->retries > 0) |
c41f8cbd | 2187 | zfcp_scsi_dbf_event_result("retr", 4, req->adapter, scpnt, req); |
8a36e453 | 2188 | else |
c41f8cbd | 2189 | zfcp_scsi_dbf_event_result("norm", 6, req->adapter, scpnt, req); |
1da177e4 | 2190 | |
1da177e4 | 2191 | scpnt->host_scribble = NULL; |
1da177e4 | 2192 | (scpnt->scsi_done) (scpnt); |
1da177e4 LT |
2193 | /* |
2194 | * We must hold this lock until scsi_done has been called. | |
2195 | * Otherwise we may call scsi_done after abort regarding this | |
2196 | * command has completed. | |
2197 | * Note: scsi_done must not block! | |
2198 | */ | |
c41f8cbd | 2199 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); |
1da177e4 LT |
2200 | } |
2201 | ||
c41f8cbd | 2202 | static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2203 | { |
1da177e4 | 2204 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) |
c41f8cbd | 2205 | &(req->qtcb->bottom.io.fcp_rsp); |
f76af7d7 | 2206 | char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; |
1da177e4 | 2207 | |
c41f8cbd SS |
2208 | if ((fcp_rsp_info[3] != RSP_CODE_GOOD) || |
2209 | (req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
2210 | req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
2211 | } | |
2212 | ||
2213 | ||
2214 | static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req) | |
2215 | { | |
2216 | struct zfcp_unit *unit; | |
2217 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
2218 | ||
2219 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)) | |
2220 | unit = req->data; | |
2221 | else | |
2222 | unit = req->unit; | |
2223 | ||
2224 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
1da177e4 | 2225 | goto skip_fsfstatus; |
1da177e4 | 2226 | |
c41f8cbd SS |
2227 | switch (header->fsf_status) { |
2228 | case FSF_HANDLE_MISMATCH: | |
2229 | case FSF_PORT_HANDLE_NOT_VALID: | |
5ffd51a5 | 2230 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fssfch1", req); |
c41f8cbd SS |
2231 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2232 | break; | |
2233 | case FSF_FCPLUN_NOT_VALID: | |
2234 | case FSF_LUN_HANDLE_NOT_VALID: | |
5ffd51a5 | 2235 | zfcp_erp_port_reopen(unit->port, 0, "fssfch2", req); |
c41f8cbd | 2236 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2237 | break; |
c41f8cbd SS |
2238 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
2239 | zfcp_fsf_class_not_supp(req); | |
1da177e4 | 2240 | break; |
c41f8cbd SS |
2241 | case FSF_ACCESS_DENIED: |
2242 | zfcp_fsf_access_denied_unit(req, unit); | |
2243 | break; | |
2244 | case FSF_DIRECTION_INDICATOR_NOT_VALID: | |
2245 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
2246 | "Incorrect direction %d, unit 0x%016Lx on port " |
2247 | "0x%016Lx closed\n", | |
c41f8cbd | 2248 | req->qtcb->bottom.io.data_direction, |
7ba58c9c SS |
2249 | (unsigned long long)unit->fcp_lun, |
2250 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 SS |
2251 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch3", |
2252 | req); | |
c41f8cbd SS |
2253 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2254 | break; | |
2255 | case FSF_CMND_LENGTH_NOT_VALID: | |
2256 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
2257 | "Incorrect CDB length %d, unit 0x%016Lx on " |
2258 | "port 0x%016Lx closed\n", | |
c41f8cbd | 2259 | req->qtcb->bottom.io.fcp_cmnd_length, |
7ba58c9c SS |
2260 | (unsigned long long)unit->fcp_lun, |
2261 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 SS |
2262 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch4", |
2263 | req); | |
c41f8cbd SS |
2264 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2265 | break; | |
2266 | case FSF_PORT_BOXED: | |
5ffd51a5 | 2267 | zfcp_erp_port_boxed(unit->port, "fssfch5", req); |
c41f8cbd SS |
2268 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
2269 | ZFCP_STATUS_FSFREQ_RETRY; | |
2270 | break; | |
2271 | case FSF_LUN_BOXED: | |
5ffd51a5 | 2272 | zfcp_erp_unit_boxed(unit, "fssfch6", req); |
c41f8cbd SS |
2273 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
2274 | ZFCP_STATUS_FSFREQ_RETRY; | |
2275 | break; | |
2276 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
2277 | if (header->fsf_status_qual.word[0] == | |
2278 | FSF_SQ_INVOKE_LINK_TEST_PROCEDURE) | |
2279 | zfcp_test_link(unit->port); | |
2280 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 2281 | break; |
1da177e4 | 2282 | } |
c41f8cbd SS |
2283 | skip_fsfstatus: |
2284 | if (req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT) | |
2285 | zfcp_fsf_send_fcp_ctm_handler(req); | |
2286 | else { | |
2287 | zfcp_fsf_send_fcp_command_task_handler(req); | |
2288 | req->unit = NULL; | |
2289 | zfcp_unit_put(unit); | |
2290 | } | |
1da177e4 LT |
2291 | } |
2292 | ||
7ba58c9c SS |
2293 | static void zfcp_set_fcp_dl(struct fcp_cmnd_iu *fcp_cmd, u32 fcp_dl) |
2294 | { | |
2295 | u32 *fcp_dl_ptr; | |
2296 | ||
2297 | /* | |
2298 | * fcp_dl_addr = start address of fcp_cmnd structure + | |
2299 | * size of fixed part + size of dynamically sized add_dcp_cdb field | |
2300 | * SEE FCP-2 documentation | |
2301 | */ | |
2302 | fcp_dl_ptr = (u32 *) ((unsigned char *) &fcp_cmd[1] + | |
2303 | (fcp_cmd->add_fcp_cdb_length << 2)); | |
2304 | *fcp_dl_ptr = fcp_dl; | |
2305 | } | |
2306 | ||
c41f8cbd SS |
2307 | /** |
2308 | * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command) | |
c41f8cbd SS |
2309 | * @unit: unit where command is sent to |
2310 | * @scsi_cmnd: scsi command to be sent | |
1da177e4 | 2311 | */ |
63caf367 CS |
2312 | int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit, |
2313 | struct scsi_cmnd *scsi_cmnd) | |
1da177e4 | 2314 | { |
c41f8cbd SS |
2315 | struct zfcp_fsf_req *req; |
2316 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
2317 | unsigned int sbtype; | |
2318 | int real_bytes, retval = -EIO; | |
63caf367 | 2319 | struct zfcp_adapter *adapter = unit->port->adapter; |
1da177e4 | 2320 | |
c41f8cbd SS |
2321 | if (unlikely(!(atomic_read(&unit->status) & |
2322 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2323 | return -EBUSY; | |
1da177e4 | 2324 | |
0406289e | 2325 | spin_lock(&adapter->req_q_lock); |
8fdf30d5 CS |
2326 | if (atomic_read(&adapter->req_q.count) <= 0) { |
2327 | atomic_inc(&adapter->qdio_outb_full); | |
c41f8cbd | 2328 | goto out; |
8fdf30d5 | 2329 | } |
63caf367 CS |
2330 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, |
2331 | ZFCP_REQ_AUTO_CLEANUP, | |
c41f8cbd | 2332 | adapter->pool.fsf_req_scsi); |
025270f0 | 2333 | if (IS_ERR(req)) { |
c41f8cbd SS |
2334 | retval = PTR_ERR(req); |
2335 | goto out; | |
2336 | } | |
2337 | ||
2338 | zfcp_unit_get(unit); | |
2339 | req->unit = unit; | |
2340 | req->data = scsi_cmnd; | |
2341 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2342 | req->qtcb->header.lun_handle = unit->handle; | |
2343 | req->qtcb->header.port_handle = unit->port->handle; | |
2344 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
2345 | ||
2346 | scsi_cmnd->host_scribble = (unsigned char *) req->req_id; | |
2347 | ||
2348 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) &(req->qtcb->bottom.io.fcp_cmnd); | |
2349 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
2350 | /* | |
2351 | * set depending on data direction: | |
2352 | * data direction bits in SBALE (SB Type) | |
2353 | * data direction bits in QTCB | |
2354 | * data direction bits in FCP_CMND IU | |
2355 | */ | |
2356 | switch (scsi_cmnd->sc_data_direction) { | |
2357 | case DMA_NONE: | |
2358 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
2359 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
1da177e4 | 2360 | break; |
c41f8cbd SS |
2361 | case DMA_FROM_DEVICE: |
2362 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ; | |
2363 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
2364 | fcp_cmnd_iu->rddata = 1; | |
2365 | break; | |
2366 | case DMA_TO_DEVICE: | |
2367 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE; | |
2368 | sbtype = SBAL_FLAGS0_TYPE_WRITE; | |
2369 | fcp_cmnd_iu->wddata = 1; | |
1da177e4 | 2370 | break; |
c41f8cbd | 2371 | case DMA_BIDIRECTIONAL: |
1da177e4 | 2372 | default: |
c41f8cbd SS |
2373 | retval = -EIO; |
2374 | goto failed_scsi_cmnd; | |
1da177e4 LT |
2375 | } |
2376 | ||
c41f8cbd SS |
2377 | if (likely((scsi_cmnd->device->simple_tags) || |
2378 | ((atomic_read(&unit->status) & ZFCP_STATUS_UNIT_READONLY) && | |
2379 | (atomic_read(&unit->status) & ZFCP_STATUS_UNIT_SHARED)))) | |
2380 | fcp_cmnd_iu->task_attribute = SIMPLE_Q; | |
2381 | else | |
2382 | fcp_cmnd_iu->task_attribute = UNTAGGED; | |
1da177e4 | 2383 | |
c41f8cbd SS |
2384 | if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH)) |
2385 | fcp_cmnd_iu->add_fcp_cdb_length = | |
2386 | (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2; | |
1da177e4 | 2387 | |
c41f8cbd | 2388 | memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); |
45633fdc | 2389 | |
c41f8cbd | 2390 | req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + |
7ba58c9c | 2391 | fcp_cmnd_iu->add_fcp_cdb_length + sizeof(u32); |
1da177e4 | 2392 | |
c41f8cbd SS |
2393 | real_bytes = zfcp_qdio_sbals_from_sg(req, sbtype, |
2394 | scsi_sglist(scsi_cmnd), | |
2395 | FSF_MAX_SBALS_PER_REQ); | |
2396 | if (unlikely(real_bytes < 0)) { | |
2397 | if (req->sbal_number < FSF_MAX_SBALS_PER_REQ) | |
2398 | retval = -EIO; | |
2399 | else { | |
2400 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
2401 | "Oversize data package, unit 0x%016Lx " |
2402 | "on port 0x%016Lx closed\n", | |
7ba58c9c SS |
2403 | (unsigned long long)unit->fcp_lun, |
2404 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 2405 | zfcp_erp_unit_shutdown(unit, 0, "fssfct1", req); |
c41f8cbd SS |
2406 | retval = -EINVAL; |
2407 | } | |
2408 | goto failed_scsi_cmnd; | |
1da177e4 | 2409 | } |
1da177e4 | 2410 | |
c41f8cbd | 2411 | zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes); |
1da177e4 | 2412 | |
c41f8cbd SS |
2413 | retval = zfcp_fsf_req_send(req); |
2414 | if (unlikely(retval)) | |
2415 | goto failed_scsi_cmnd; | |
1da177e4 | 2416 | |
c41f8cbd | 2417 | goto out; |
1da177e4 | 2418 | |
c41f8cbd SS |
2419 | failed_scsi_cmnd: |
2420 | zfcp_unit_put(unit); | |
2421 | zfcp_fsf_req_free(req); | |
2422 | scsi_cmnd->host_scribble = NULL; | |
2423 | out: | |
0406289e | 2424 | spin_unlock(&adapter->req_q_lock); |
c41f8cbd | 2425 | return retval; |
1da177e4 LT |
2426 | } |
2427 | ||
2428 | /** | |
c41f8cbd | 2429 | * zfcp_fsf_send_fcp_ctm - send SCSI task management command |
c41f8cbd SS |
2430 | * @unit: pointer to struct zfcp_unit |
2431 | * @tm_flags: unsigned byte for task management flags | |
c41f8cbd | 2432 | * Returns: on success pointer to struct fsf_req, NULL otherwise |
1da177e4 | 2433 | */ |
63caf367 | 2434 | struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *unit, u8 tm_flags) |
1da177e4 | 2435 | { |
44cc76f2 | 2436 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2437 | struct zfcp_fsf_req *req = NULL; |
2438 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
63caf367 | 2439 | struct zfcp_adapter *adapter = unit->port->adapter; |
1da177e4 | 2440 | |
c41f8cbd SS |
2441 | if (unlikely(!(atomic_read(&unit->status) & |
2442 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2443 | return NULL; | |
1da177e4 | 2444 | |
92cab0d9 CS |
2445 | spin_lock_bh(&adapter->req_q_lock); |
2446 | if (zfcp_fsf_req_sbal_get(adapter)) | |
c41f8cbd | 2447 | goto out; |
63caf367 | 2448 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, 0, |
c41f8cbd | 2449 | adapter->pool.fsf_req_scsi); |
633528c3 SS |
2450 | if (IS_ERR(req)) { |
2451 | req = NULL; | |
c41f8cbd | 2452 | goto out; |
633528c3 | 2453 | } |
1da177e4 | 2454 | |
c41f8cbd SS |
2455 | req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT; |
2456 | req->data = unit; | |
2457 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2458 | req->qtcb->header.lun_handle = unit->handle; | |
2459 | req->qtcb->header.port_handle = unit->port->handle; | |
2460 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
2461 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
2462 | req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + | |
7ba58c9c | 2463 | sizeof(u32); |
c41f8cbd SS |
2464 | |
2465 | sbale = zfcp_qdio_sbale_req(req); | |
2466 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE; | |
2467 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 2468 | |
c41f8cbd SS |
2469 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) &req->qtcb->bottom.io.fcp_cmnd; |
2470 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
2471 | fcp_cmnd_iu->task_management_flags = tm_flags; | |
1da177e4 | 2472 | |
c41f8cbd SS |
2473 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); |
2474 | if (!zfcp_fsf_req_send(req)) | |
2475 | goto out; | |
1da177e4 | 2476 | |
c41f8cbd SS |
2477 | zfcp_fsf_req_free(req); |
2478 | req = NULL; | |
2479 | out: | |
92cab0d9 | 2480 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
2481 | return req; |
2482 | } | |
1da177e4 | 2483 | |
c41f8cbd SS |
2484 | static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req) |
2485 | { | |
1da177e4 LT |
2486 | } |
2487 | ||
c41f8cbd SS |
2488 | /** |
2489 | * zfcp_fsf_control_file - control file upload/download | |
2490 | * @adapter: pointer to struct zfcp_adapter | |
2491 | * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc | |
2492 | * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise | |
1da177e4 | 2493 | */ |
c41f8cbd SS |
2494 | struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, |
2495 | struct zfcp_fsf_cfdc *fsf_cfdc) | |
1da177e4 | 2496 | { |
44cc76f2 | 2497 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2498 | struct zfcp_fsf_req *req = NULL; |
2499 | struct fsf_qtcb_bottom_support *bottom; | |
2500 | int direction, retval = -EIO, bytes; | |
2501 | ||
2502 | if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) | |
2503 | return ERR_PTR(-EOPNOTSUPP); | |
2504 | ||
2505 | switch (fsf_cfdc->command) { | |
2506 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
2507 | direction = SBAL_FLAGS0_TYPE_WRITE; | |
2508 | break; | |
2509 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
2510 | direction = SBAL_FLAGS0_TYPE_READ; | |
2511 | break; | |
2512 | default: | |
2513 | return ERR_PTR(-EINVAL); | |
2514 | } | |
1da177e4 | 2515 | |
0406289e | 2516 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
2517 | if (zfcp_fsf_req_sbal_get(adapter)) |
2518 | goto out; | |
1da177e4 | 2519 | |
c41f8cbd | 2520 | req = zfcp_fsf_req_create(adapter, fsf_cfdc->command, 0, NULL); |
025270f0 | 2521 | if (IS_ERR(req)) { |
c41f8cbd SS |
2522 | retval = -EPERM; |
2523 | goto out; | |
2524 | } | |
1da177e4 | 2525 | |
c41f8cbd | 2526 | req->handler = zfcp_fsf_control_file_handler; |
1da177e4 | 2527 | |
c41f8cbd SS |
2528 | sbale = zfcp_qdio_sbale_req(req); |
2529 | sbale[0].flags |= direction; | |
8a36e453 | 2530 | |
c41f8cbd SS |
2531 | bottom = &req->qtcb->bottom.support; |
2532 | bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE; | |
2533 | bottom->option = fsf_cfdc->option; | |
8a36e453 | 2534 | |
c41f8cbd SS |
2535 | bytes = zfcp_qdio_sbals_from_sg(req, direction, fsf_cfdc->sg, |
2536 | FSF_MAX_SBALS_PER_REQ); | |
2537 | if (bytes != ZFCP_CFDC_MAX_SIZE) { | |
2538 | retval = -ENOMEM; | |
2539 | zfcp_fsf_req_free(req); | |
2540 | goto out; | |
2541 | } | |
1da177e4 | 2542 | |
c41f8cbd SS |
2543 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
2544 | retval = zfcp_fsf_req_send(req); | |
2545 | out: | |
0406289e | 2546 | spin_unlock_bh(&adapter->req_q_lock); |
8a36e453 | 2547 | |
c41f8cbd SS |
2548 | if (!retval) { |
2549 | wait_event(req->completion_wq, | |
2550 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
2551 | return req; | |
1da177e4 | 2552 | } |
c41f8cbd | 2553 | return ERR_PTR(retval); |
1da177e4 | 2554 | } |