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; | |
dceab655 | 529 | /* fall through */ |
c41f8cbd | 530 | default: |
c41f8cbd | 531 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
532 | "Unknown or unsupported arbitrated loop " |
533 | "fibre channel topology detected\n"); | |
5ffd51a5 | 534 | zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1", req); |
c41f8cbd | 535 | return -EIO; |
1da177e4 | 536 | } |
c41f8cbd | 537 | |
1da177e4 LT |
538 | return 0; |
539 | } | |
540 | ||
c41f8cbd | 541 | static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) |
553448f6 CS |
542 | { |
543 | struct zfcp_adapter *adapter = req->adapter; | |
c41f8cbd SS |
544 | struct fsf_qtcb *qtcb = req->qtcb; |
545 | struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config; | |
546 | struct Scsi_Host *shost = adapter->scsi_host; | |
553448f6 | 547 | |
c41f8cbd SS |
548 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
549 | return; | |
1da177e4 | 550 | |
c41f8cbd SS |
551 | adapter->fsf_lic_version = bottom->lic_version; |
552 | adapter->adapter_features = bottom->adapter_features; | |
553 | adapter->connection_features = bottom->connection_features; | |
554 | adapter->peer_wwpn = 0; | |
555 | adapter->peer_wwnn = 0; | |
556 | adapter->peer_d_id = 0; | |
8a36e453 | 557 | |
c41f8cbd SS |
558 | switch (qtcb->header.fsf_status) { |
559 | case FSF_GOOD: | |
560 | if (zfcp_fsf_exchange_config_evaluate(req)) | |
561 | return; | |
1da177e4 | 562 | |
c41f8cbd SS |
563 | if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { |
564 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
565 | "FCP adapter maximum QTCB size (%d bytes) " |
566 | "is too small\n", | |
567 | bottom->max_qtcb_size); | |
5ffd51a5 | 568 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1", req); |
c41f8cbd SS |
569 | return; |
570 | } | |
571 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, | |
572 | &adapter->status); | |
1da177e4 | 573 | break; |
c41f8cbd SS |
574 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
575 | fc_host_node_name(shost) = 0; | |
576 | fc_host_port_name(shost) = 0; | |
577 | fc_host_port_id(shost) = 0; | |
578 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; | |
579 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; | |
580 | adapter->hydra_version = 0; | |
1da177e4 | 581 | |
c41f8cbd SS |
582 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, |
583 | &adapter->status); | |
1da177e4 | 584 | |
5ffd51a5 | 585 | zfcp_fsf_link_down_info_eval(req, "fsecdh2", |
c41f8cbd | 586 | &qtcb->header.fsf_status_qual.link_down_info); |
1da177e4 | 587 | break; |
c41f8cbd | 588 | default: |
5ffd51a5 | 589 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3", req); |
c41f8cbd SS |
590 | return; |
591 | } | |
1da177e4 | 592 | |
c41f8cbd SS |
593 | if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) { |
594 | adapter->hardware_version = bottom->hardware_version; | |
595 | memcpy(fc_host_serial_number(shost), bottom->serial_number, | |
596 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
597 | EBCASC(fc_host_serial_number(shost), | |
598 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
599 | } | |
1da177e4 | 600 | |
c41f8cbd SS |
601 | if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) { |
602 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
603 | "The FCP adapter only supports newer " |
604 | "control block versions\n"); | |
5ffd51a5 | 605 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4", req); |
c41f8cbd SS |
606 | return; |
607 | } | |
608 | if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) { | |
609 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
610 | "The FCP adapter only supports older " |
611 | "control block versions\n"); | |
5ffd51a5 | 612 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5", req); |
c41f8cbd SS |
613 | } |
614 | } | |
1da177e4 | 615 | |
c41f8cbd SS |
616 | static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req) |
617 | { | |
618 | struct zfcp_adapter *adapter = req->adapter; | |
619 | struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port; | |
620 | struct Scsi_Host *shost = adapter->scsi_host; | |
1da177e4 | 621 | |
c41f8cbd SS |
622 | if (req->data) |
623 | memcpy(req->data, bottom, sizeof(*bottom)); | |
9eb69aff | 624 | |
0282985d | 625 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) { |
c41f8cbd | 626 | fc_host_permanent_port_name(shost) = bottom->wwpn; |
0282985d CS |
627 | fc_host_port_type(shost) = FC_PORTTYPE_NPIV; |
628 | } else | |
c41f8cbd SS |
629 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); |
630 | fc_host_maxframe_size(shost) = bottom->maximum_frame_size; | |
631 | fc_host_supported_speeds(shost) = bottom->supported_speed; | |
632 | } | |
1da177e4 | 633 | |
c41f8cbd SS |
634 | static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) |
635 | { | |
c41f8cbd SS |
636 | struct fsf_qtcb *qtcb = req->qtcb; |
637 | ||
638 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
639 | return; | |
640 | ||
641 | switch (qtcb->header.fsf_status) { | |
642 | case FSF_GOOD: | |
643 | zfcp_fsf_exchange_port_evaluate(req); | |
c41f8cbd SS |
644 | break; |
645 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: | |
646 | zfcp_fsf_exchange_port_evaluate(req); | |
5ffd51a5 | 647 | zfcp_fsf_link_down_info_eval(req, "fsepdh1", |
c41f8cbd | 648 | &qtcb->header.fsf_status_qual.link_down_info); |
aef4a983 | 649 | break; |
1da177e4 | 650 | } |
c41f8cbd | 651 | } |
d26ab06e | 652 | |
7001f0c4 | 653 | static int zfcp_fsf_sbal_check(struct zfcp_adapter *adapter) |
c41f8cbd | 654 | { |
dedbc2b3 | 655 | struct zfcp_qdio_queue *req_q = &adapter->req_q; |
c41f8cbd | 656 | |
7001f0c4 MP |
657 | spin_lock_bh(&adapter->req_q_lock); |
658 | if (atomic_read(&req_q->count)) | |
659 | return 1; | |
660 | spin_unlock_bh(&adapter->req_q_lock); | |
661 | return 0; | |
662 | } | |
663 | ||
664 | static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter) | |
665 | { | |
666 | long ret; | |
dedbc2b3 | 667 | |
0406289e | 668 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 669 | ret = wait_event_interruptible_timeout(adapter->request_wq, |
7001f0c4 | 670 | zfcp_fsf_sbal_check(adapter), 5 * HZ); |
c41f8cbd SS |
671 | if (ret > 0) |
672 | return 0; | |
cbf1ed02 | 673 | if (!ret) { |
2450d3e7 | 674 | atomic_inc(&adapter->qdio_outb_full); |
cbf1ed02 CS |
675 | /* assume hanging outbound queue, try queue recovery */ |
676 | zfcp_erp_adapter_reopen(adapter, 0, "fsrsg_1", NULL); | |
677 | } | |
7001f0c4 MP |
678 | |
679 | spin_lock_bh(&adapter->req_q_lock); | |
c41f8cbd SS |
680 | return -EIO; |
681 | } | |
682 | ||
683 | static struct zfcp_fsf_req *zfcp_fsf_alloc_noqtcb(mempool_t *pool) | |
684 | { | |
685 | struct zfcp_fsf_req *req; | |
686 | req = mempool_alloc(pool, GFP_ATOMIC); | |
687 | if (!req) | |
688 | return NULL; | |
689 | memset(req, 0, sizeof(*req)); | |
88f2a977 | 690 | req->pool = pool; |
c41f8cbd SS |
691 | return req; |
692 | } | |
693 | ||
694 | static struct zfcp_fsf_req *zfcp_fsf_alloc_qtcb(mempool_t *pool) | |
695 | { | |
696 | struct zfcp_fsf_req_qtcb *qtcb; | |
697 | ||
698 | if (likely(pool)) | |
699 | qtcb = mempool_alloc(pool, GFP_ATOMIC); | |
700 | else | |
701 | qtcb = kmem_cache_alloc(zfcp_data.fsf_req_qtcb_cache, | |
702 | GFP_ATOMIC); | |
703 | if (unlikely(!qtcb)) | |
704 | return NULL; | |
705 | ||
706 | memset(qtcb, 0, sizeof(*qtcb)); | |
707 | qtcb->fsf_req.qtcb = &qtcb->qtcb; | |
708 | qtcb->fsf_req.pool = pool; | |
709 | ||
710 | return &qtcb->fsf_req; | |
711 | } | |
712 | ||
713 | static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter, | |
714 | u32 fsf_cmd, int req_flags, | |
715 | mempool_t *pool) | |
1da177e4 | 716 | { |
44cc76f2 | 717 | struct qdio_buffer_element *sbale; |
1da177e4 | 718 | |
c41f8cbd SS |
719 | struct zfcp_fsf_req *req; |
720 | struct zfcp_qdio_queue *req_q = &adapter->req_q; | |
951f746f | 721 | |
c41f8cbd SS |
722 | if (req_flags & ZFCP_REQ_NO_QTCB) |
723 | req = zfcp_fsf_alloc_noqtcb(pool); | |
724 | else | |
725 | req = zfcp_fsf_alloc_qtcb(pool); | |
1da177e4 | 726 | |
c41f8cbd | 727 | if (unlikely(!req)) |
1e9b1643 | 728 | return ERR_PTR(-ENOMEM); |
1da177e4 | 729 | |
c41f8cbd SS |
730 | if (adapter->req_no == 0) |
731 | adapter->req_no++; | |
1da177e4 | 732 | |
c41f8cbd SS |
733 | INIT_LIST_HEAD(&req->list); |
734 | init_timer(&req->timer); | |
735 | init_waitqueue_head(&req->completion_wq); | |
1da177e4 | 736 | |
c41f8cbd SS |
737 | req->adapter = adapter; |
738 | req->fsf_command = fsf_cmd; | |
52bfb558 | 739 | req->req_id = adapter->req_no; |
c41f8cbd SS |
740 | req->sbal_number = 1; |
741 | req->sbal_first = req_q->first; | |
742 | req->sbal_last = req_q->first; | |
743 | req->sbale_curr = 1; | |
744 | ||
745 | sbale = zfcp_qdio_sbale_req(req); | |
746 | sbale[0].addr = (void *) req->req_id; | |
747 | sbale[0].flags |= SBAL_FLAGS0_COMMAND; | |
748 | ||
749 | if (likely(req->qtcb)) { | |
750 | req->qtcb->prefix.req_seq_no = req->adapter->fsf_req_seq_no; | |
751 | req->qtcb->prefix.req_id = req->req_id; | |
752 | req->qtcb->prefix.ulp_info = 26; | |
753 | req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command]; | |
754 | req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION; | |
755 | req->qtcb->header.req_handle = req->req_id; | |
756 | req->qtcb->header.fsf_command = req->fsf_command; | |
757 | req->seq_no = adapter->fsf_req_seq_no; | |
758 | req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; | |
759 | sbale[1].addr = (void *) req->qtcb; | |
760 | sbale[1].length = sizeof(struct fsf_qtcb); | |
761 | } | |
762 | ||
763 | if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) { | |
764 | zfcp_fsf_req_free(req); | |
765 | return ERR_PTR(-EIO); | |
766 | } | |
951f746f | 767 | |
c41f8cbd SS |
768 | if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP)) |
769 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; | |
1da177e4 | 770 | |
c41f8cbd | 771 | return req; |
1da177e4 LT |
772 | } |
773 | ||
c41f8cbd SS |
774 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) |
775 | { | |
776 | struct zfcp_adapter *adapter = req->adapter; | |
135ea137 MP |
777 | unsigned long flags; |
778 | int idx; | |
779 | int with_qtcb = (req->qtcb != NULL); | |
c41f8cbd SS |
780 | |
781 | /* put allocated FSF request into hash table */ | |
45316a86 | 782 | spin_lock_irqsave(&adapter->req_list_lock, flags); |
c41f8cbd SS |
783 | idx = zfcp_reqlist_hash(req->req_id); |
784 | list_add_tail(&req->list, &adapter->req_list[idx]); | |
45316a86 | 785 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); |
c41f8cbd | 786 | |
3765138a | 787 | req->qdio_outb_usage = atomic_read(&adapter->req_q.count); |
c41f8cbd SS |
788 | req->issued = get_clock(); |
789 | if (zfcp_qdio_send(req)) { | |
c41f8cbd | 790 | del_timer(&req->timer); |
3765138a CS |
791 | spin_lock_irqsave(&adapter->req_list_lock, flags); |
792 | /* lookup request again, list might have changed */ | |
793 | if (zfcp_reqlist_find_safe(adapter, req)) | |
794 | zfcp_reqlist_remove(adapter, req); | |
795 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); | |
5ffd51a5 | 796 | zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1", req); |
c41f8cbd SS |
797 | return -EIO; |
798 | } | |
799 | ||
800 | /* Don't increase for unsolicited status */ | |
135ea137 | 801 | if (with_qtcb) |
c41f8cbd | 802 | adapter->fsf_req_seq_no++; |
52bfb558 | 803 | adapter->req_no++; |
c41f8cbd SS |
804 | |
805 | return 0; | |
806 | } | |
807 | ||
808 | /** | |
809 | * zfcp_fsf_status_read - send status read request | |
810 | * @adapter: pointer to struct zfcp_adapter | |
811 | * @req_flags: request flags | |
812 | * Returns: 0 on success, ERROR otherwise | |
1da177e4 | 813 | */ |
c41f8cbd | 814 | int zfcp_fsf_status_read(struct zfcp_adapter *adapter) |
1da177e4 | 815 | { |
c41f8cbd SS |
816 | struct zfcp_fsf_req *req; |
817 | struct fsf_status_read_buffer *sr_buf; | |
44cc76f2 | 818 | struct qdio_buffer_element *sbale; |
c41f8cbd | 819 | int retval = -EIO; |
1da177e4 | 820 | |
0406289e | 821 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
822 | if (zfcp_fsf_req_sbal_get(adapter)) |
823 | goto out; | |
824 | ||
825 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS, | |
826 | ZFCP_REQ_NO_QTCB, | |
827 | adapter->pool.fsf_req_status_read); | |
025270f0 | 828 | if (IS_ERR(req)) { |
c41f8cbd SS |
829 | retval = PTR_ERR(req); |
830 | goto out; | |
1da177e4 LT |
831 | } |
832 | ||
c41f8cbd SS |
833 | sbale = zfcp_qdio_sbale_req(req); |
834 | sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS; | |
835 | sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY; | |
836 | req->sbale_curr = 2; | |
837 | ||
838 | sr_buf = mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC); | |
839 | if (!sr_buf) { | |
840 | retval = -ENOMEM; | |
841 | goto failed_buf; | |
842 | } | |
843 | memset(sr_buf, 0, sizeof(*sr_buf)); | |
844 | req->data = sr_buf; | |
845 | sbale = zfcp_qdio_sbale_curr(req); | |
846 | sbale->addr = (void *) sr_buf; | |
847 | sbale->length = sizeof(*sr_buf); | |
059c97d0 | 848 | |
c41f8cbd SS |
849 | retval = zfcp_fsf_req_send(req); |
850 | if (retval) | |
851 | goto failed_req_send; | |
1da177e4 | 852 | |
c41f8cbd SS |
853 | goto out; |
854 | ||
855 | failed_req_send: | |
856 | mempool_free(sr_buf, adapter->pool.data_status_read); | |
857 | failed_buf: | |
858 | zfcp_fsf_req_free(req); | |
859 | zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL); | |
860 | out: | |
0406289e | 861 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
862 | return retval; |
863 | } | |
864 | ||
865 | static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req) | |
866 | { | |
867 | struct zfcp_unit *unit = req->data; | |
868 | union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual; | |
869 | ||
870 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
871 | return; | |
872 | ||
873 | switch (req->qtcb->header.fsf_status) { | |
1da177e4 | 874 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd | 875 | if (fsq->word[0] == fsq->word[1]) { |
5ffd51a5 SS |
876 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, |
877 | "fsafch1", req); | |
c41f8cbd | 878 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
879 | } |
880 | break; | |
1da177e4 | 881 | case FSF_LUN_HANDLE_NOT_VALID: |
c41f8cbd | 882 | if (fsq->word[0] == fsq->word[1]) { |
5ffd51a5 | 883 | zfcp_erp_port_reopen(unit->port, 0, "fsafch2", req); |
c41f8cbd | 884 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
885 | } |
886 | break; | |
1da177e4 | 887 | case FSF_FCP_COMMAND_DOES_NOT_EXIST: |
c41f8cbd | 888 | req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED; |
1da177e4 | 889 | break; |
1da177e4 | 890 | case FSF_PORT_BOXED: |
5ffd51a5 | 891 | zfcp_erp_port_boxed(unit->port, "fsafch3", req); |
c41f8cbd SS |
892 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
893 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 894 | break; |
1da177e4 | 895 | case FSF_LUN_BOXED: |
5ffd51a5 | 896 | zfcp_erp_unit_boxed(unit, "fsafch4", req); |
c41f8cbd SS |
897 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
898 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 899 | break; |
1da177e4 | 900 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 901 | switch (fsq->word[0]) { |
1da177e4 | 902 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
65a8d4e1 | 903 | zfcp_test_link(unit->port); |
dceab655 | 904 | /* fall through */ |
1da177e4 | 905 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 906 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 907 | break; |
1da177e4 LT |
908 | } |
909 | break; | |
1da177e4 | 910 | case FSF_GOOD: |
c41f8cbd | 911 | req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED; |
1da177e4 | 912 | break; |
1da177e4 | 913 | } |
1da177e4 LT |
914 | } |
915 | ||
916 | /** | |
c41f8cbd SS |
917 | * zfcp_fsf_abort_fcp_command - abort running SCSI command |
918 | * @old_req_id: unsigned long | |
c41f8cbd | 919 | * @unit: pointer to struct zfcp_unit |
c41f8cbd | 920 | * Returns: pointer to struct zfcp_fsf_req |
1da177e4 | 921 | */ |
1da177e4 | 922 | |
c41f8cbd | 923 | struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id, |
63caf367 | 924 | struct zfcp_unit *unit) |
1da177e4 | 925 | { |
44cc76f2 | 926 | struct qdio_buffer_element *sbale; |
c41f8cbd | 927 | struct zfcp_fsf_req *req = NULL; |
63caf367 | 928 | struct zfcp_adapter *adapter = unit->port->adapter; |
8a36e453 | 929 | |
92cab0d9 CS |
930 | spin_lock_bh(&adapter->req_q_lock); |
931 | if (zfcp_fsf_req_sbal_get(adapter)) | |
c41f8cbd SS |
932 | goto out; |
933 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND, | |
63caf367 | 934 | 0, adapter->pool.fsf_req_abort); |
633528c3 SS |
935 | if (IS_ERR(req)) { |
936 | req = NULL; | |
c41f8cbd | 937 | goto out; |
633528c3 | 938 | } |
2abbe866 | 939 | |
c41f8cbd SS |
940 | if (unlikely(!(atomic_read(&unit->status) & |
941 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
942 | goto out_error_free; | |
1da177e4 | 943 | |
c41f8cbd SS |
944 | sbale = zfcp_qdio_sbale_req(req); |
945 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
946 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 947 | |
c41f8cbd SS |
948 | req->data = unit; |
949 | req->handler = zfcp_fsf_abort_fcp_command_handler; | |
950 | req->qtcb->header.lun_handle = unit->handle; | |
951 | req->qtcb->header.port_handle = unit->port->handle; | |
952 | req->qtcb->bottom.support.req_handle = (u64) old_req_id; | |
953 | ||
954 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); | |
955 | if (!zfcp_fsf_req_send(req)) | |
956 | goto out; | |
957 | ||
958 | out_error_free: | |
959 | zfcp_fsf_req_free(req); | |
960 | req = NULL; | |
961 | out: | |
92cab0d9 | 962 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 963 | return req; |
1da177e4 LT |
964 | } |
965 | ||
c41f8cbd | 966 | static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) |
1da177e4 | 967 | { |
c41f8cbd SS |
968 | struct zfcp_adapter *adapter = req->adapter; |
969 | struct zfcp_send_ct *send_ct = req->data; | |
c41f8cbd | 970 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1da177e4 | 971 | |
c41f8cbd | 972 | send_ct->status = -EINVAL; |
1da177e4 | 973 | |
c41f8cbd | 974 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
975 | goto skip_fsfstatus; |
976 | ||
1da177e4 | 977 | switch (header->fsf_status) { |
1da177e4 | 978 | case FSF_GOOD: |
c41f8cbd SS |
979 | zfcp_san_dbf_event_ct_response(req); |
980 | send_ct->status = 0; | |
1da177e4 | 981 | break; |
1da177e4 | 982 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 983 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 984 | break; |
1da177e4 | 985 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
986 | switch (header->fsf_status_qual.word[0]){ |
987 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 988 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 989 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 990 | break; |
1da177e4 LT |
991 | } |
992 | break; | |
1da177e4 | 993 | case FSF_ACCESS_DENIED: |
1da177e4 | 994 | break; |
1da177e4 | 995 | case FSF_PORT_BOXED: |
c41f8cbd SS |
996 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
997 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 998 | break; |
c41f8cbd | 999 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 1000 | zfcp_erp_adapter_reopen(adapter, 0, "fsscth1", req); |
dceab655 | 1001 | /* fall through */ |
c41f8cbd | 1002 | case FSF_GENERIC_COMMAND_REJECTED: |
1da177e4 | 1003 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1004 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1005 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1006 | case FSF_SBAL_MISMATCH: |
c41f8cbd | 1007 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1008 | break; |
1009 | } | |
1010 | ||
1011 | skip_fsfstatus: | |
c41f8cbd | 1012 | if (send_ct->handler) |
1da177e4 | 1013 | send_ct->handler(send_ct->handler_data); |
c41f8cbd | 1014 | } |
1da177e4 | 1015 | |
426f6059 CS |
1016 | static void zfcp_fsf_setup_ct_els_unchained(struct qdio_buffer_element *sbale, |
1017 | struct scatterlist *sg_req, | |
1018 | struct scatterlist *sg_resp) | |
1019 | { | |
1020 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ; | |
1021 | sbale[2].addr = sg_virt(sg_req); | |
1022 | sbale[2].length = sg_req->length; | |
1023 | sbale[3].addr = sg_virt(sg_resp); | |
1024 | sbale[3].length = sg_resp->length; | |
1025 | sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1026 | } | |
1027 | ||
1028 | static int zfcp_fsf_one_sbal(struct scatterlist *sg) | |
1029 | { | |
1030 | return sg_is_last(sg) && sg->length <= PAGE_SIZE; | |
1031 | } | |
1032 | ||
39eb7e9a CS |
1033 | static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req, |
1034 | struct scatterlist *sg_req, | |
1035 | struct scatterlist *sg_resp, | |
1036 | int max_sbals) | |
c41f8cbd | 1037 | { |
39eb7e9a CS |
1038 | struct qdio_buffer_element *sbale = zfcp_qdio_sbale_req(req); |
1039 | u32 feat = req->adapter->adapter_features; | |
c41f8cbd SS |
1040 | int bytes; |
1041 | ||
39eb7e9a | 1042 | if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) { |
426f6059 | 1043 | if (!zfcp_fsf_one_sbal(sg_req) || !zfcp_fsf_one_sbal(sg_resp)) |
39eb7e9a CS |
1044 | return -EOPNOTSUPP; |
1045 | ||
426f6059 CS |
1046 | zfcp_fsf_setup_ct_els_unchained(sbale, sg_req, sg_resp); |
1047 | return 0; | |
1048 | } | |
1049 | ||
1050 | /* use single, unchained SBAL if it can hold the request */ | |
1051 | if (zfcp_fsf_one_sbal(sg_req) && zfcp_fsf_one_sbal(sg_resp)) { | |
1052 | zfcp_fsf_setup_ct_els_unchained(sbale, sg_req, sg_resp); | |
39eb7e9a CS |
1053 | return 0; |
1054 | } | |
1055 | ||
c41f8cbd SS |
1056 | bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, |
1057 | sg_req, max_sbals); | |
1058 | if (bytes <= 0) | |
9072df4d | 1059 | return -EIO; |
c41f8cbd SS |
1060 | req->qtcb->bottom.support.req_buf_length = bytes; |
1061 | req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; | |
1062 | ||
1063 | bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, | |
1064 | sg_resp, max_sbals); | |
1065 | if (bytes <= 0) | |
9072df4d | 1066 | return -EIO; |
c41f8cbd SS |
1067 | req->qtcb->bottom.support.resp_buf_length = bytes; |
1068 | ||
1069 | return 0; | |
1da177e4 LT |
1070 | } |
1071 | ||
1072 | /** | |
c41f8cbd SS |
1073 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) |
1074 | * @ct: pointer to struct zfcp_send_ct with data for request | |
1075 | * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req | |
1076 | * @erp_action: if non-null the Generic Service request sent within ERP | |
1da177e4 | 1077 | */ |
c41f8cbd SS |
1078 | int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, |
1079 | struct zfcp_erp_action *erp_action) | |
1da177e4 | 1080 | { |
5ab944f9 SS |
1081 | struct zfcp_wka_port *wka_port = ct->wka_port; |
1082 | struct zfcp_adapter *adapter = wka_port->adapter; | |
c41f8cbd SS |
1083 | struct zfcp_fsf_req *req; |
1084 | int ret = -EIO; | |
1da177e4 | 1085 | |
0406289e | 1086 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1087 | if (zfcp_fsf_req_sbal_get(adapter)) |
1088 | goto out; | |
1da177e4 | 1089 | |
c41f8cbd SS |
1090 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC, |
1091 | ZFCP_REQ_AUTO_CLEANUP, pool); | |
025270f0 | 1092 | if (IS_ERR(req)) { |
c41f8cbd SS |
1093 | ret = PTR_ERR(req); |
1094 | goto out; | |
3f0ca62a CS |
1095 | } |
1096 | ||
39eb7e9a CS |
1097 | ret = zfcp_fsf_setup_ct_els_sbals(req, ct->req, ct->resp, |
1098 | FSF_MAX_SBALS_PER_REQ); | |
553448f6 | 1099 | if (ret) |
1da177e4 | 1100 | goto failed_send; |
1da177e4 | 1101 | |
c41f8cbd | 1102 | req->handler = zfcp_fsf_send_ct_handler; |
5ab944f9 | 1103 | req->qtcb->header.port_handle = wka_port->handle; |
c41f8cbd SS |
1104 | req->qtcb->bottom.support.service_class = FSF_CLASS_3; |
1105 | req->qtcb->bottom.support.timeout = ct->timeout; | |
1106 | req->data = ct; | |
1107 | ||
1108 | zfcp_san_dbf_event_ct_request(req); | |
1109 | ||
1110 | if (erp_action) { | |
1111 | erp_action->fsf_req = req; | |
1112 | req->erp_action = erp_action; | |
287ac01a | 1113 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
1114 | } else |
1115 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1da177e4 | 1116 | |
c41f8cbd SS |
1117 | ret = zfcp_fsf_req_send(req); |
1118 | if (ret) | |
1119 | goto failed_send; | |
1da177e4 | 1120 | |
c41f8cbd | 1121 | goto out; |
1da177e4 | 1122 | |
c41f8cbd SS |
1123 | failed_send: |
1124 | zfcp_fsf_req_free(req); | |
1125 | if (erp_action) | |
1126 | erp_action->fsf_req = NULL; | |
1127 | out: | |
0406289e | 1128 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 1129 | return ret; |
1da177e4 LT |
1130 | } |
1131 | ||
c41f8cbd | 1132 | static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1133 | { |
c41f8cbd SS |
1134 | struct zfcp_send_els *send_els = req->data; |
1135 | struct zfcp_port *port = send_els->port; | |
1136 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1137 | |
c41f8cbd | 1138 | send_els->status = -EINVAL; |
1da177e4 | 1139 | |
c41f8cbd | 1140 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
1141 | goto skip_fsfstatus; |
1142 | ||
1143 | switch (header->fsf_status) { | |
1da177e4 | 1144 | case FSF_GOOD: |
c41f8cbd SS |
1145 | zfcp_san_dbf_event_els_response(req); |
1146 | send_els->status = 0; | |
1da177e4 | 1147 | break; |
1da177e4 | 1148 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 1149 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 1150 | break; |
1da177e4 | 1151 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1152 | switch (header->fsf_status_qual.word[0]){ |
1153 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
64b29a13 AH |
1154 | if (port && (send_els->ls_code != ZFCP_LS_ADISC)) |
1155 | zfcp_test_link(port); | |
c41f8cbd | 1156 | /*fall through */ |
1da177e4 | 1157 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1158 | case FSF_SQ_RETRY_IF_POSSIBLE: |
c41f8cbd | 1159 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1160 | break; |
1da177e4 LT |
1161 | } |
1162 | break; | |
1da177e4 | 1163 | case FSF_ELS_COMMAND_REJECTED: |
1da177e4 | 1164 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1165 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1166 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1167 | break; |
1da177e4 | 1168 | case FSF_ACCESS_DENIED: |
dc577d55 CS |
1169 | if (port) |
1170 | zfcp_fsf_access_denied_port(req, port); | |
1da177e4 | 1171 | break; |
c41f8cbd SS |
1172 | case FSF_SBAL_MISMATCH: |
1173 | /* should never occure, avoided in zfcp_fsf_send_els */ | |
1174 | /* fall through */ | |
1da177e4 | 1175 | default: |
c41f8cbd | 1176 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1177 | break; |
1178 | } | |
1da177e4 | 1179 | skip_fsfstatus: |
aa551daf | 1180 | if (send_els->handler) |
1da177e4 | 1181 | send_els->handler(send_els->handler_data); |
c41f8cbd | 1182 | } |
1da177e4 | 1183 | |
c41f8cbd SS |
1184 | /** |
1185 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) | |
1186 | * @els: pointer to struct zfcp_send_els with data for the command | |
1187 | */ | |
1188 | int zfcp_fsf_send_els(struct zfcp_send_els *els) | |
1189 | { | |
1190 | struct zfcp_fsf_req *req; | |
1191 | struct zfcp_adapter *adapter = els->adapter; | |
1192 | struct fsf_qtcb_bottom_support *bottom; | |
1193 | int ret = -EIO; | |
1194 | ||
8fdf30d5 CS |
1195 | spin_lock_bh(&adapter->req_q_lock); |
1196 | if (zfcp_fsf_req_sbal_get(adapter)) | |
c41f8cbd SS |
1197 | goto out; |
1198 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS, | |
1199 | ZFCP_REQ_AUTO_CLEANUP, NULL); | |
025270f0 | 1200 | if (IS_ERR(req)) { |
c41f8cbd SS |
1201 | ret = PTR_ERR(req); |
1202 | goto out; | |
1203 | } | |
1204 | ||
39eb7e9a | 1205 | ret = zfcp_fsf_setup_ct_els_sbals(req, els->req, els->resp, 2); |
44cc76f2 | 1206 | |
c41f8cbd SS |
1207 | if (ret) |
1208 | goto failed_send; | |
1209 | ||
1210 | bottom = &req->qtcb->bottom.support; | |
1211 | req->handler = zfcp_fsf_send_els_handler; | |
1212 | bottom->d_id = els->d_id; | |
1213 | bottom->service_class = FSF_CLASS_3; | |
1214 | bottom->timeout = 2 * R_A_TOV; | |
1215 | req->data = els; | |
1216 | ||
1217 | zfcp_san_dbf_event_els_request(req); | |
1218 | ||
1219 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1220 | ret = zfcp_fsf_req_send(req); | |
1221 | if (ret) | |
1222 | goto failed_send; | |
1223 | ||
1224 | goto out; | |
1225 | ||
1226 | failed_send: | |
1227 | zfcp_fsf_req_free(req); | |
1228 | out: | |
8fdf30d5 | 1229 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 1230 | return ret; |
1da177e4 LT |
1231 | } |
1232 | ||
c41f8cbd | 1233 | int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1234 | { |
44cc76f2 | 1235 | struct qdio_buffer_element *sbale; |
c41f8cbd | 1236 | struct zfcp_fsf_req *req; |
52ef11a7 | 1237 | struct zfcp_adapter *adapter = erp_action->adapter; |
c41f8cbd SS |
1238 | int retval = -EIO; |
1239 | ||
0406289e | 1240 | spin_lock_bh(&adapter->req_q_lock); |
92cab0d9 | 1241 | if (zfcp_fsf_req_sbal_get(adapter)) |
c41f8cbd SS |
1242 | goto out; |
1243 | req = zfcp_fsf_req_create(adapter, | |
1244 | FSF_QTCB_EXCHANGE_CONFIG_DATA, | |
1245 | ZFCP_REQ_AUTO_CLEANUP, | |
1246 | adapter->pool.fsf_req_erp); | |
025270f0 | 1247 | if (IS_ERR(req)) { |
c41f8cbd SS |
1248 | retval = PTR_ERR(req); |
1249 | goto out; | |
1da177e4 LT |
1250 | } |
1251 | ||
c41f8cbd | 1252 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1253 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1254 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1255 | |
c41f8cbd | 1256 | req->qtcb->bottom.config.feature_selection = |
aef4a983 MS |
1257 | FSF_FEATURE_CFDC | |
1258 | FSF_FEATURE_LUN_SHARING | | |
9eb69aff | 1259 | FSF_FEATURE_NOTIFICATION_LOST | |
aef4a983 | 1260 | FSF_FEATURE_UPDATE_ALERT; |
c41f8cbd SS |
1261 | req->erp_action = erp_action; |
1262 | req->handler = zfcp_fsf_exchange_config_data_handler; | |
1263 | erp_action->fsf_req = req; | |
1da177e4 | 1264 | |
287ac01a | 1265 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1266 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1267 | if (retval) { |
c41f8cbd | 1268 | zfcp_fsf_req_free(req); |
1da177e4 | 1269 | erp_action->fsf_req = NULL; |
1da177e4 | 1270 | } |
c41f8cbd | 1271 | out: |
0406289e | 1272 | spin_unlock_bh(&adapter->req_q_lock); |
52ef11a7 SS |
1273 | return retval; |
1274 | } | |
1da177e4 | 1275 | |
c41f8cbd SS |
1276 | int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter, |
1277 | struct fsf_qtcb_bottom_config *data) | |
52ef11a7 | 1278 | { |
44cc76f2 | 1279 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1280 | struct zfcp_fsf_req *req = NULL; |
1281 | int retval = -EIO; | |
1282 | ||
0406289e | 1283 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 1284 | if (zfcp_fsf_req_sbal_get(adapter)) |
ada81b74 | 1285 | goto out_unlock; |
c41f8cbd SS |
1286 | |
1287 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA, | |
1288 | 0, NULL); | |
025270f0 | 1289 | if (IS_ERR(req)) { |
c41f8cbd | 1290 | retval = PTR_ERR(req); |
ada81b74 | 1291 | goto out_unlock; |
52ef11a7 SS |
1292 | } |
1293 | ||
c41f8cbd | 1294 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1295 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1296 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
c41f8cbd | 1297 | req->handler = zfcp_fsf_exchange_config_data_handler; |
52ef11a7 | 1298 | |
c41f8cbd | 1299 | req->qtcb->bottom.config.feature_selection = |
52ef11a7 SS |
1300 | FSF_FEATURE_CFDC | |
1301 | FSF_FEATURE_LUN_SHARING | | |
1302 | FSF_FEATURE_NOTIFICATION_LOST | | |
1303 | FSF_FEATURE_UPDATE_ALERT; | |
1304 | ||
1305 | if (data) | |
c41f8cbd | 1306 | req->data = data; |
52ef11a7 | 1307 | |
c41f8cbd SS |
1308 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
1309 | retval = zfcp_fsf_req_send(req); | |
0406289e | 1310 | spin_unlock_bh(&adapter->req_q_lock); |
553448f6 | 1311 | if (!retval) |
c41f8cbd SS |
1312 | wait_event(req->completion_wq, |
1313 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
52ef11a7 | 1314 | |
c41f8cbd | 1315 | zfcp_fsf_req_free(req); |
ada81b74 | 1316 | return retval; |
52ef11a7 | 1317 | |
ada81b74 CS |
1318 | out_unlock: |
1319 | spin_unlock_bh(&adapter->req_q_lock); | |
1da177e4 LT |
1320 | return retval; |
1321 | } | |
1322 | ||
1da177e4 LT |
1323 | /** |
1324 | * zfcp_fsf_exchange_port_data - request information about local port | |
aef4a983 | 1325 | * @erp_action: ERP action for the adapter for which port data is requested |
c41f8cbd | 1326 | * Returns: 0 on success, error otherwise |
1da177e4 | 1327 | */ |
c41f8cbd | 1328 | int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1329 | { |
44cc76f2 | 1330 | struct qdio_buffer_element *sbale; |
c41f8cbd | 1331 | struct zfcp_fsf_req *req; |
52ef11a7 | 1332 | struct zfcp_adapter *adapter = erp_action->adapter; |
c41f8cbd | 1333 | int retval = -EIO; |
1da177e4 | 1334 | |
553448f6 | 1335 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1336 | return -EOPNOTSUPP; |
1da177e4 | 1337 | |
0406289e | 1338 | spin_lock_bh(&adapter->req_q_lock); |
92cab0d9 | 1339 | if (zfcp_fsf_req_sbal_get(adapter)) |
c41f8cbd SS |
1340 | goto out; |
1341 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, | |
1342 | ZFCP_REQ_AUTO_CLEANUP, | |
1343 | adapter->pool.fsf_req_erp); | |
025270f0 | 1344 | if (IS_ERR(req)) { |
c41f8cbd SS |
1345 | retval = PTR_ERR(req); |
1346 | goto out; | |
aef4a983 MS |
1347 | } |
1348 | ||
c41f8cbd | 1349 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1350 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1351 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1352 | |
c41f8cbd SS |
1353 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1354 | req->erp_action = erp_action; | |
1355 | erp_action->fsf_req = req; | |
52ef11a7 | 1356 | |
287ac01a | 1357 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1358 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1359 | if (retval) { |
c41f8cbd | 1360 | zfcp_fsf_req_free(req); |
52ef11a7 SS |
1361 | erp_action->fsf_req = NULL; |
1362 | } | |
c41f8cbd | 1363 | out: |
0406289e | 1364 | spin_unlock_bh(&adapter->req_q_lock); |
52ef11a7 SS |
1365 | return retval; |
1366 | } | |
1367 | ||
52ef11a7 SS |
1368 | /** |
1369 | * zfcp_fsf_exchange_port_data_sync - request information about local port | |
c41f8cbd SS |
1370 | * @adapter: pointer to struct zfcp_adapter |
1371 | * @data: pointer to struct fsf_qtcb_bottom_port | |
1372 | * Returns: 0 on success, error otherwise | |
52ef11a7 | 1373 | */ |
c41f8cbd SS |
1374 | int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, |
1375 | struct fsf_qtcb_bottom_port *data) | |
52ef11a7 | 1376 | { |
44cc76f2 | 1377 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1378 | struct zfcp_fsf_req *req = NULL; |
1379 | int retval = -EIO; | |
52ef11a7 | 1380 | |
553448f6 | 1381 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1382 | return -EOPNOTSUPP; |
52ef11a7 | 1383 | |
0406289e | 1384 | spin_lock_bh(&adapter->req_q_lock); |
92cab0d9 | 1385 | if (zfcp_fsf_req_sbal_get(adapter)) |
ada81b74 | 1386 | goto out_unlock; |
c41f8cbd SS |
1387 | |
1388 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, 0, | |
1389 | NULL); | |
025270f0 | 1390 | if (IS_ERR(req)) { |
c41f8cbd | 1391 | retval = PTR_ERR(req); |
ada81b74 | 1392 | goto out_unlock; |
1da177e4 LT |
1393 | } |
1394 | ||
52ef11a7 | 1395 | if (data) |
c41f8cbd | 1396 | req->data = data; |
52ef11a7 | 1397 | |
c41f8cbd | 1398 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1399 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1400 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1401 | ||
c41f8cbd SS |
1402 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1403 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1404 | retval = zfcp_fsf_req_send(req); | |
0406289e | 1405 | spin_unlock_bh(&adapter->req_q_lock); |
ada81b74 | 1406 | |
553448f6 | 1407 | if (!retval) |
c41f8cbd SS |
1408 | wait_event(req->completion_wq, |
1409 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
1410 | zfcp_fsf_req_free(req); | |
1da177e4 | 1411 | |
1da177e4 | 1412 | return retval; |
ada81b74 CS |
1413 | |
1414 | out_unlock: | |
1415 | spin_unlock_bh(&adapter->req_q_lock); | |
1416 | return retval; | |
1da177e4 LT |
1417 | } |
1418 | ||
c41f8cbd | 1419 | static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1420 | { |
c41f8cbd SS |
1421 | struct zfcp_port *port = req->data; |
1422 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1423 | struct fsf_plogi *plogi; |
1da177e4 | 1424 | |
c41f8cbd | 1425 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
a17c5855 | 1426 | goto out; |
1da177e4 | 1427 | |
1da177e4 | 1428 | switch (header->fsf_status) { |
1da177e4 | 1429 | case FSF_PORT_ALREADY_OPEN: |
1da177e4 | 1430 | break; |
1da177e4 | 1431 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1432 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1433 | break; |
1da177e4 | 1434 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: |
c41f8cbd | 1435 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 1436 | "Not enough FCP adapter resources to open " |
7ba58c9c SS |
1437 | "remote port 0x%016Lx\n", |
1438 | (unsigned long long)port->wwpn); | |
5ffd51a5 | 1439 | zfcp_erp_port_failed(port, "fsoph_1", req); |
c41f8cbd | 1440 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1441 | break; |
1da177e4 | 1442 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1443 | switch (header->fsf_status_qual.word[0]) { |
1444 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1445 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1446 | case FSF_SQ_NO_RETRY_POSSIBLE: |
c41f8cbd | 1447 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1448 | break; |
1449 | } | |
1450 | break; | |
1da177e4 | 1451 | case FSF_GOOD: |
1da177e4 | 1452 | port->handle = header->port_handle; |
1da177e4 LT |
1453 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN | |
1454 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
d736a27b AH |
1455 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
1456 | ZFCP_STATUS_COMMON_ACCESS_BOXED, | |
1457 | &port->status); | |
1da177e4 LT |
1458 | /* check whether D_ID has changed during open */ |
1459 | /* | |
1460 | * FIXME: This check is not airtight, as the FCP channel does | |
1461 | * not monitor closures of target port connections caused on | |
1462 | * the remote side. Thus, they might miss out on invalidating | |
1463 | * locally cached WWPNs (and other N_Port parameters) of gone | |
1464 | * target ports. So, our heroic attempt to make things safe | |
1465 | * could be undermined by 'open port' response data tagged with | |
1466 | * obsolete WWPNs. Another reason to monitor potential | |
1467 | * connection closures ourself at least (by interpreting | |
1468 | * incoming ELS' and unsolicited status). It just crosses my | |
1469 | * mind that one should be able to cross-check by means of | |
1470 | * another GID_PN straight after a port has been opened. | |
1471 | * Alternately, an ADISC/PDISC ELS should suffice, as well. | |
1472 | */ | |
c41f8cbd | 1473 | plogi = (struct fsf_plogi *) req->qtcb->bottom.support.els; |
39eb7e9a CS |
1474 | if (req->qtcb->bottom.support.els1_length >= |
1475 | FSF_PLOGI_MIN_LEN) { | |
c41f8cbd | 1476 | if (plogi->serv_param.wwpn != port->wwpn) |
b98478d7 | 1477 | port->d_id = 0; |
c41f8cbd SS |
1478 | else { |
1479 | port->wwnn = plogi->serv_param.wwnn; | |
1480 | zfcp_fc_plogi_evaluate(port, plogi); | |
1da177e4 LT |
1481 | } |
1482 | } | |
1483 | break; | |
1da177e4 | 1484 | case FSF_UNKNOWN_OP_SUBTYPE: |
c41f8cbd | 1485 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1486 | break; |
1487 | } | |
a17c5855 MP |
1488 | |
1489 | out: | |
1490 | zfcp_port_put(port); | |
1da177e4 LT |
1491 | } |
1492 | ||
c41f8cbd SS |
1493 | /** |
1494 | * zfcp_fsf_open_port - create and send open port request | |
1495 | * @erp_action: pointer to struct zfcp_erp_action | |
1496 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1497 | */ |
c41f8cbd | 1498 | int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1499 | { |
44cc76f2 | 1500 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1501 | struct zfcp_adapter *adapter = erp_action->adapter; |
1502 | struct zfcp_fsf_req *req; | |
a17c5855 | 1503 | struct zfcp_port *port = erp_action->port; |
c41f8cbd SS |
1504 | int retval = -EIO; |
1505 | ||
0406289e | 1506 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1507 | if (zfcp_fsf_req_sbal_get(adapter)) |
1508 | goto out; | |
1509 | ||
1510 | req = zfcp_fsf_req_create(adapter, | |
1511 | FSF_QTCB_OPEN_PORT_WITH_DID, | |
1512 | ZFCP_REQ_AUTO_CLEANUP, | |
1513 | adapter->pool.fsf_req_erp); | |
025270f0 | 1514 | if (IS_ERR(req)) { |
c41f8cbd | 1515 | retval = PTR_ERR(req); |
1da177e4 | 1516 | goto out; |
c41f8cbd | 1517 | } |
1da177e4 | 1518 | |
c41f8cbd | 1519 | sbale = zfcp_qdio_sbale_req(req); |
1da177e4 LT |
1520 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1521 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1522 | ||
c41f8cbd | 1523 | req->handler = zfcp_fsf_open_port_handler; |
a17c5855 MP |
1524 | req->qtcb->bottom.support.d_id = port->d_id; |
1525 | req->data = port; | |
c41f8cbd SS |
1526 | req->erp_action = erp_action; |
1527 | erp_action->fsf_req = req; | |
a17c5855 | 1528 | zfcp_port_get(port); |
c41f8cbd | 1529 | |
287ac01a | 1530 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1531 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1532 | if (retval) { |
c41f8cbd | 1533 | zfcp_fsf_req_free(req); |
1da177e4 | 1534 | erp_action->fsf_req = NULL; |
a17c5855 | 1535 | zfcp_port_put(port); |
1da177e4 | 1536 | } |
c41f8cbd | 1537 | out: |
0406289e | 1538 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1539 | return retval; |
1540 | } | |
1541 | ||
c41f8cbd | 1542 | static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1543 | { |
c41f8cbd | 1544 | struct zfcp_port *port = req->data; |
1da177e4 | 1545 | |
c41f8cbd | 1546 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1547 | return; |
1da177e4 | 1548 | |
c41f8cbd | 1549 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1550 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 1551 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1", req); |
c41f8cbd | 1552 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1553 | break; |
1da177e4 | 1554 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 | 1555 | break; |
1da177e4 | 1556 | case FSF_GOOD: |
5ffd51a5 | 1557 | zfcp_erp_modify_port_status(port, "fscph_2", req, |
1da177e4 LT |
1558 | ZFCP_STATUS_COMMON_OPEN, |
1559 | ZFCP_CLEAR); | |
1da177e4 | 1560 | break; |
1da177e4 | 1561 | } |
1da177e4 LT |
1562 | } |
1563 | ||
c41f8cbd SS |
1564 | /** |
1565 | * zfcp_fsf_close_port - create and send close port request | |
1566 | * @erp_action: pointer to struct zfcp_erp_action | |
1567 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1568 | */ |
c41f8cbd | 1569 | int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1570 | { |
44cc76f2 | 1571 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1572 | struct zfcp_adapter *adapter = erp_action->adapter; |
1573 | struct zfcp_fsf_req *req; | |
1574 | int retval = -EIO; | |
1575 | ||
0406289e | 1576 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1577 | if (zfcp_fsf_req_sbal_get(adapter)) |
1578 | goto out; | |
1579 | ||
1580 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT, | |
1581 | ZFCP_REQ_AUTO_CLEANUP, | |
1582 | adapter->pool.fsf_req_erp); | |
025270f0 | 1583 | if (IS_ERR(req)) { |
c41f8cbd | 1584 | retval = PTR_ERR(req); |
1da177e4 | 1585 | goto out; |
c41f8cbd | 1586 | } |
1da177e4 | 1587 | |
c41f8cbd | 1588 | sbale = zfcp_qdio_sbale_req(req); |
1da177e4 LT |
1589 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1590 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1591 | ||
c41f8cbd SS |
1592 | req->handler = zfcp_fsf_close_port_handler; |
1593 | req->data = erp_action->port; | |
1594 | req->erp_action = erp_action; | |
1595 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1596 | erp_action->fsf_req = req; | |
c41f8cbd | 1597 | |
287ac01a | 1598 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1599 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1600 | if (retval) { |
c41f8cbd | 1601 | zfcp_fsf_req_free(req); |
1da177e4 | 1602 | erp_action->fsf_req = NULL; |
1da177e4 | 1603 | } |
c41f8cbd | 1604 | out: |
0406289e | 1605 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1606 | return retval; |
1607 | } | |
1608 | ||
5ab944f9 SS |
1609 | static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req) |
1610 | { | |
1611 | struct zfcp_wka_port *wka_port = req->data; | |
1612 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1613 | ||
1614 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
1615 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1616 | goto out; | |
1617 | } | |
1618 | ||
1619 | switch (header->fsf_status) { | |
1620 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: | |
1621 | dev_warn(&req->adapter->ccw_device->dev, | |
1622 | "Opening WKA port 0x%x failed\n", wka_port->d_id); | |
dceab655 | 1623 | /* fall through */ |
5ab944f9 SS |
1624 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1625 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
dceab655 | 1626 | /* fall through */ |
5ab944f9 SS |
1627 | case FSF_ACCESS_DENIED: |
1628 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1629 | break; | |
5ab944f9 SS |
1630 | case FSF_GOOD: |
1631 | wka_port->handle = header->port_handle; | |
27f492cc SS |
1632 | /* fall through */ |
1633 | case FSF_PORT_ALREADY_OPEN: | |
5ab944f9 SS |
1634 | wka_port->status = ZFCP_WKA_PORT_ONLINE; |
1635 | } | |
1636 | out: | |
1637 | wake_up(&wka_port->completion_wq); | |
1638 | } | |
1639 | ||
1640 | /** | |
1641 | * zfcp_fsf_open_wka_port - create and send open wka-port request | |
1642 | * @wka_port: pointer to struct zfcp_wka_port | |
1643 | * Returns: 0 on success, error otherwise | |
1644 | */ | |
1645 | int zfcp_fsf_open_wka_port(struct zfcp_wka_port *wka_port) | |
1646 | { | |
1647 | struct qdio_buffer_element *sbale; | |
1648 | struct zfcp_adapter *adapter = wka_port->adapter; | |
1649 | struct zfcp_fsf_req *req; | |
1650 | int retval = -EIO; | |
1651 | ||
0406289e | 1652 | spin_lock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1653 | if (zfcp_fsf_req_sbal_get(adapter)) |
1654 | goto out; | |
1655 | ||
1656 | req = zfcp_fsf_req_create(adapter, | |
1657 | FSF_QTCB_OPEN_PORT_WITH_DID, | |
1658 | ZFCP_REQ_AUTO_CLEANUP, | |
1659 | adapter->pool.fsf_req_erp); | |
1660 | if (unlikely(IS_ERR(req))) { | |
1661 | retval = PTR_ERR(req); | |
1662 | goto out; | |
1663 | } | |
1664 | ||
1665 | sbale = zfcp_qdio_sbale_req(req); | |
1666 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1667 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1668 | ||
1669 | req->handler = zfcp_fsf_open_wka_port_handler; | |
1670 | req->qtcb->bottom.support.d_id = wka_port->d_id; | |
1671 | req->data = wka_port; | |
1672 | ||
1673 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1674 | retval = zfcp_fsf_req_send(req); | |
1675 | if (retval) | |
1676 | zfcp_fsf_req_free(req); | |
1677 | out: | |
0406289e | 1678 | spin_unlock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1679 | return retval; |
1680 | } | |
1681 | ||
1682 | static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req) | |
1683 | { | |
1684 | struct zfcp_wka_port *wka_port = req->data; | |
1685 | ||
1686 | if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) { | |
1687 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
5ffd51a5 | 1688 | zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1", req); |
5ab944f9 SS |
1689 | } |
1690 | ||
1691 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1692 | wake_up(&wka_port->completion_wq); | |
1693 | } | |
1694 | ||
1695 | /** | |
1696 | * zfcp_fsf_close_wka_port - create and send close wka port request | |
1697 | * @erp_action: pointer to struct zfcp_erp_action | |
1698 | * Returns: 0 on success, error otherwise | |
1699 | */ | |
1700 | int zfcp_fsf_close_wka_port(struct zfcp_wka_port *wka_port) | |
1701 | { | |
1702 | struct qdio_buffer_element *sbale; | |
1703 | struct zfcp_adapter *adapter = wka_port->adapter; | |
1704 | struct zfcp_fsf_req *req; | |
1705 | int retval = -EIO; | |
1706 | ||
0406289e | 1707 | spin_lock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1708 | if (zfcp_fsf_req_sbal_get(adapter)) |
1709 | goto out; | |
1710 | ||
1711 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT, | |
1712 | ZFCP_REQ_AUTO_CLEANUP, | |
1713 | adapter->pool.fsf_req_erp); | |
1714 | if (unlikely(IS_ERR(req))) { | |
1715 | retval = PTR_ERR(req); | |
1716 | goto out; | |
1717 | } | |
1718 | ||
1719 | sbale = zfcp_qdio_sbale_req(req); | |
1720 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1721 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1722 | ||
1723 | req->handler = zfcp_fsf_close_wka_port_handler; | |
1724 | req->data = wka_port; | |
1725 | req->qtcb->header.port_handle = wka_port->handle; | |
1726 | ||
1727 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1728 | retval = zfcp_fsf_req_send(req); | |
1729 | if (retval) | |
1730 | zfcp_fsf_req_free(req); | |
1731 | out: | |
0406289e | 1732 | spin_unlock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1733 | return retval; |
1734 | } | |
1735 | ||
c41f8cbd | 1736 | static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1737 | { |
c41f8cbd SS |
1738 | struct zfcp_port *port = req->data; |
1739 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1740 | struct zfcp_unit *unit; |
1da177e4 | 1741 | |
c41f8cbd | 1742 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
a5b11dda | 1743 | return; |
1da177e4 | 1744 | |
1da177e4 | 1745 | switch (header->fsf_status) { |
1da177e4 | 1746 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 1747 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1", req); |
c41f8cbd | 1748 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1749 | break; |
1da177e4 | 1750 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1751 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1752 | break; |
1da177e4 | 1753 | case FSF_PORT_BOXED: |
5c815d15 CS |
1754 | /* can't use generic zfcp_erp_modify_port_status because |
1755 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */ | |
1756 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
1757 | list_for_each_entry(unit, &port->unit_list_head, list) | |
1758 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, | |
1759 | &unit->status); | |
dfb3cf00 SS |
1760 | zfcp_erp_port_boxed(port, "fscpph2", req); |
1761 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
1762 | ZFCP_STATUS_FSFREQ_RETRY; | |
1763 | ||
1da177e4 | 1764 | break; |
1da177e4 | 1765 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1766 | switch (header->fsf_status_qual.word[0]) { |
1767 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
c41f8cbd | 1768 | /* fall through */ |
1da177e4 | 1769 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1770 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1771 | break; |
1da177e4 LT |
1772 | } |
1773 | break; | |
1da177e4 | 1774 | case FSF_GOOD: |
1da177e4 LT |
1775 | /* can't use generic zfcp_erp_modify_port_status because |
1776 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port | |
1777 | */ | |
1778 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
1779 | list_for_each_entry(unit, &port->unit_list_head, list) | |
c41f8cbd SS |
1780 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, |
1781 | &unit->status); | |
1da177e4 | 1782 | break; |
1da177e4 | 1783 | } |
1da177e4 LT |
1784 | } |
1785 | ||
c41f8cbd SS |
1786 | /** |
1787 | * zfcp_fsf_close_physical_port - close physical port | |
1788 | * @erp_action: pointer to struct zfcp_erp_action | |
1789 | * Returns: 0 on success | |
1da177e4 | 1790 | */ |
c41f8cbd | 1791 | int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1792 | { |
44cc76f2 | 1793 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1794 | struct zfcp_adapter *adapter = erp_action->adapter; |
1795 | struct zfcp_fsf_req *req; | |
1796 | int retval = -EIO; | |
1797 | ||
0406289e | 1798 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 1799 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 1800 | goto out; |
1da177e4 | 1801 | |
c41f8cbd SS |
1802 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PHYSICAL_PORT, |
1803 | ZFCP_REQ_AUTO_CLEANUP, | |
1804 | adapter->pool.fsf_req_erp); | |
025270f0 | 1805 | if (IS_ERR(req)) { |
c41f8cbd SS |
1806 | retval = PTR_ERR(req); |
1807 | goto out; | |
1808 | } | |
1da177e4 | 1809 | |
c41f8cbd SS |
1810 | sbale = zfcp_qdio_sbale_req(req); |
1811 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1812 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1813 | |
c41f8cbd SS |
1814 | req->data = erp_action->port; |
1815 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1816 | req->erp_action = erp_action; | |
1817 | req->handler = zfcp_fsf_close_physical_port_handler; | |
1818 | erp_action->fsf_req = req; | |
c41f8cbd | 1819 | |
287ac01a | 1820 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1821 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1822 | if (retval) { |
c41f8cbd | 1823 | zfcp_fsf_req_free(req); |
1da177e4 | 1824 | erp_action->fsf_req = NULL; |
1da177e4 | 1825 | } |
c41f8cbd | 1826 | out: |
0406289e | 1827 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1828 | return retval; |
1829 | } | |
1830 | ||
c41f8cbd | 1831 | static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1832 | { |
c41f8cbd SS |
1833 | struct zfcp_adapter *adapter = req->adapter; |
1834 | struct zfcp_unit *unit = req->data; | |
1835 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1836 | struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support; | |
1837 | struct fsf_queue_designator *queue_designator = | |
1838 | &header->fsf_status_qual.fsf_queue_designator; | |
aef4a983 | 1839 | int exclusive, readwrite; |
1da177e4 | 1840 | |
c41f8cbd | 1841 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1842 | return; |
1da177e4 | 1843 | |
1da177e4 | 1844 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
b64ddf96 | 1845 | ZFCP_STATUS_COMMON_ACCESS_BOXED | |
1da177e4 LT |
1846 | ZFCP_STATUS_UNIT_SHARED | |
1847 | ZFCP_STATUS_UNIT_READONLY, | |
1848 | &unit->status); | |
1849 | ||
1da177e4 LT |
1850 | switch (header->fsf_status) { |
1851 | ||
1852 | case FSF_PORT_HANDLE_NOT_VALID: | |
5ffd51a5 | 1853 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fsouh_1", req); |
c41f8cbd | 1854 | /* fall through */ |
1da177e4 | 1855 | case FSF_LUN_ALREADY_OPEN: |
1da177e4 | 1856 | break; |
1da177e4 | 1857 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1858 | zfcp_fsf_access_denied_unit(req, unit); |
1da177e4 | 1859 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
553448f6 | 1860 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); |
1da177e4 | 1861 | break; |
1da177e4 | 1862 | case FSF_PORT_BOXED: |
5ffd51a5 | 1863 | zfcp_erp_port_boxed(unit->port, "fsouh_2", req); |
c41f8cbd SS |
1864 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
1865 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 1866 | break; |
1da177e4 | 1867 | case FSF_LUN_SHARING_VIOLATION: |
c41f8cbd | 1868 | if (header->fsf_status_qual.word[0]) |
553448f6 | 1869 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1870 | "LUN 0x%Lx on port 0x%Lx is already in " |
1871 | "use by CSS%d, MIF Image ID %x\n", | |
7ba58c9c SS |
1872 | (unsigned long long)unit->fcp_lun, |
1873 | (unsigned long long)unit->port->wwpn, | |
ff3b24fa CS |
1874 | queue_designator->cssid, |
1875 | queue_designator->hla); | |
c41f8cbd | 1876 | else |
553448f6 CS |
1877 | zfcp_act_eval_err(adapter, |
1878 | header->fsf_status_qual.word[2]); | |
5ffd51a5 | 1879 | zfcp_erp_unit_access_denied(unit, "fsouh_3", req); |
1da177e4 LT |
1880 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
1881 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); | |
c41f8cbd | 1882 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1883 | break; |
1da177e4 | 1884 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: |
c41f8cbd | 1885 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1886 | "No handle is available for LUN " |
1887 | "0x%016Lx on port 0x%016Lx\n", | |
7ba58c9c SS |
1888 | (unsigned long long)unit->fcp_lun, |
1889 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 1890 | zfcp_erp_unit_failed(unit, "fsouh_4", req); |
c41f8cbd SS |
1891 | /* fall through */ |
1892 | case FSF_INVALID_COMMAND_OPTION: | |
1893 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1894 | break; |
1da177e4 | 1895 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1896 | switch (header->fsf_status_qual.word[0]) { |
1897 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
65a8d4e1 | 1898 | zfcp_test_link(unit->port); |
c41f8cbd | 1899 | /* fall through */ |
1da177e4 | 1900 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1901 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1902 | break; |
1da177e4 LT |
1903 | } |
1904 | break; | |
1905 | ||
1da177e4 | 1906 | case FSF_GOOD: |
1da177e4 | 1907 | unit->handle = header->lun_handle; |
1da177e4 | 1908 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
aef4a983 MS |
1909 | |
1910 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) && | |
1911 | (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) && | |
6fcf41d1 | 1912 | !zfcp_ccw_priv_sch(adapter)) { |
aef4a983 MS |
1913 | exclusive = (bottom->lun_access_info & |
1914 | FSF_UNIT_ACCESS_EXCLUSIVE); | |
1915 | readwrite = (bottom->lun_access_info & | |
1916 | FSF_UNIT_ACCESS_OUTBOUND_TRANSFER); | |
1917 | ||
1da177e4 LT |
1918 | if (!exclusive) |
1919 | atomic_set_mask(ZFCP_STATUS_UNIT_SHARED, | |
1920 | &unit->status); | |
1921 | ||
1922 | if (!readwrite) { | |
1923 | atomic_set_mask(ZFCP_STATUS_UNIT_READONLY, | |
1924 | &unit->status); | |
c41f8cbd | 1925 | dev_info(&adapter->ccw_device->dev, |
ff3b24fa CS |
1926 | "SCSI device at LUN 0x%016Lx on port " |
1927 | "0x%016Lx opened read-only\n", | |
7ba58c9c SS |
1928 | (unsigned long long)unit->fcp_lun, |
1929 | (unsigned long long)unit->port->wwpn); | |
1da177e4 LT |
1930 | } |
1931 | ||
1932 | if (exclusive && !readwrite) { | |
c41f8cbd | 1933 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
1934 | "Exclusive read-only access not " |
1935 | "supported (unit 0x%016Lx, " | |
1936 | "port 0x%016Lx)\n", | |
7ba58c9c SS |
1937 | (unsigned long long)unit->fcp_lun, |
1938 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 1939 | zfcp_erp_unit_failed(unit, "fsouh_5", req); |
c41f8cbd | 1940 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
5ffd51a5 | 1941 | zfcp_erp_unit_shutdown(unit, 0, "fsouh_6", req); |
1da177e4 | 1942 | } else if (!exclusive && readwrite) { |
c41f8cbd | 1943 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
1944 | "Shared read-write access not " |
1945 | "supported (unit 0x%016Lx, port " | |
27c3f0a6 | 1946 | "0x%016Lx)\n", |
7ba58c9c SS |
1947 | (unsigned long long)unit->fcp_lun, |
1948 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 1949 | zfcp_erp_unit_failed(unit, "fsouh_7", req); |
c41f8cbd | 1950 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
5ffd51a5 | 1951 | zfcp_erp_unit_shutdown(unit, 0, "fsouh_8", req); |
1da177e4 LT |
1952 | } |
1953 | } | |
1da177e4 | 1954 | break; |
1da177e4 | 1955 | } |
1da177e4 LT |
1956 | } |
1957 | ||
c41f8cbd SS |
1958 | /** |
1959 | * zfcp_fsf_open_unit - open unit | |
1960 | * @erp_action: pointer to struct zfcp_erp_action | |
1961 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1962 | */ |
c41f8cbd | 1963 | int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) |
1da177e4 | 1964 | { |
44cc76f2 | 1965 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1966 | struct zfcp_adapter *adapter = erp_action->adapter; |
1967 | struct zfcp_fsf_req *req; | |
1968 | int retval = -EIO; | |
1969 | ||
0406289e | 1970 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 1971 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 1972 | goto out; |
1da177e4 | 1973 | |
c41f8cbd SS |
1974 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_OPEN_LUN, |
1975 | ZFCP_REQ_AUTO_CLEANUP, | |
1976 | adapter->pool.fsf_req_erp); | |
025270f0 | 1977 | if (IS_ERR(req)) { |
c41f8cbd SS |
1978 | retval = PTR_ERR(req); |
1979 | goto out; | |
1980 | } | |
1981 | ||
1982 | sbale = zfcp_qdio_sbale_req(req); | |
1da177e4 LT |
1983 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1984 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1985 | ||
c41f8cbd SS |
1986 | req->qtcb->header.port_handle = erp_action->port->handle; |
1987 | req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun; | |
1988 | req->handler = zfcp_fsf_open_unit_handler; | |
1989 | req->data = erp_action->unit; | |
1990 | req->erp_action = erp_action; | |
1991 | erp_action->fsf_req = req; | |
1992 | ||
1993 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) | |
1994 | req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING; | |
1995 | ||
287ac01a | 1996 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1997 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1998 | if (retval) { |
c41f8cbd | 1999 | zfcp_fsf_req_free(req); |
1da177e4 | 2000 | erp_action->fsf_req = NULL; |
1da177e4 | 2001 | } |
c41f8cbd | 2002 | out: |
0406289e | 2003 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
2004 | return retval; |
2005 | } | |
2006 | ||
c41f8cbd | 2007 | static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2008 | { |
c41f8cbd | 2009 | struct zfcp_unit *unit = req->data; |
1da177e4 | 2010 | |
c41f8cbd | 2011 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 2012 | return; |
1da177e4 | 2013 | |
c41f8cbd | 2014 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 2015 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 2016 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fscuh_1", req); |
c41f8cbd | 2017 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2018 | break; |
1da177e4 | 2019 | case FSF_LUN_HANDLE_NOT_VALID: |
5ffd51a5 | 2020 | zfcp_erp_port_reopen(unit->port, 0, "fscuh_2", req); |
c41f8cbd | 2021 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2022 | break; |
1da177e4 | 2023 | case FSF_PORT_BOXED: |
5ffd51a5 | 2024 | zfcp_erp_port_boxed(unit->port, "fscuh_3", req); |
c41f8cbd SS |
2025 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
2026 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 2027 | break; |
1da177e4 | 2028 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 2029 | switch (req->qtcb->header.fsf_status_qual.word[0]) { |
1da177e4 | 2030 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
65a8d4e1 | 2031 | zfcp_test_link(unit->port); |
c41f8cbd | 2032 | /* fall through */ |
1da177e4 | 2033 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 2034 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
2035 | break; |
2036 | } | |
2037 | break; | |
1da177e4 | 2038 | case FSF_GOOD: |
1da177e4 | 2039 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
1da177e4 | 2040 | break; |
1da177e4 | 2041 | } |
1da177e4 LT |
2042 | } |
2043 | ||
2044 | /** | |
c41f8cbd SS |
2045 | * zfcp_fsf_close_unit - close zfcp unit |
2046 | * @erp_action: pointer to struct zfcp_unit | |
2047 | * Returns: 0 on success, error otherwise | |
1da177e4 | 2048 | */ |
c41f8cbd | 2049 | int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) |
1da177e4 | 2050 | { |
44cc76f2 | 2051 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2052 | struct zfcp_adapter *adapter = erp_action->adapter; |
2053 | struct zfcp_fsf_req *req; | |
2054 | int retval = -EIO; | |
1da177e4 | 2055 | |
0406289e | 2056 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 2057 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 2058 | goto out; |
c41f8cbd SS |
2059 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_LUN, |
2060 | ZFCP_REQ_AUTO_CLEANUP, | |
2061 | adapter->pool.fsf_req_erp); | |
025270f0 | 2062 | if (IS_ERR(req)) { |
c41f8cbd SS |
2063 | retval = PTR_ERR(req); |
2064 | goto out; | |
2065 | } | |
1da177e4 | 2066 | |
c41f8cbd SS |
2067 | sbale = zfcp_qdio_sbale_req(req); |
2068 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1da177e4 LT |
2069 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; |
2070 | ||
c41f8cbd SS |
2071 | req->qtcb->header.port_handle = erp_action->port->handle; |
2072 | req->qtcb->header.lun_handle = erp_action->unit->handle; | |
2073 | req->handler = zfcp_fsf_close_unit_handler; | |
2074 | req->data = erp_action->unit; | |
2075 | req->erp_action = erp_action; | |
2076 | erp_action->fsf_req = req; | |
fdf23452 | 2077 | |
287ac01a | 2078 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
2079 | retval = zfcp_fsf_req_send(req); |
2080 | if (retval) { | |
2081 | zfcp_fsf_req_free(req); | |
2082 | erp_action->fsf_req = NULL; | |
2083 | } | |
2084 | out: | |
0406289e | 2085 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 2086 | return retval; |
1da177e4 LT |
2087 | } |
2088 | ||
c9615858 CS |
2089 | static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat) |
2090 | { | |
2091 | lat_rec->sum += lat; | |
c41f8cbd SS |
2092 | lat_rec->min = min(lat_rec->min, lat); |
2093 | lat_rec->max = max(lat_rec->max, lat); | |
c9615858 CS |
2094 | } |
2095 | ||
c41f8cbd | 2096 | static void zfcp_fsf_req_latency(struct zfcp_fsf_req *req) |
c9615858 CS |
2097 | { |
2098 | struct fsf_qual_latency_info *lat_inf; | |
2099 | struct latency_cont *lat; | |
c41f8cbd | 2100 | struct zfcp_unit *unit = req->unit; |
c9615858 | 2101 | |
c41f8cbd | 2102 | lat_inf = &req->qtcb->prefix.prot_status_qual.latency_info; |
c9615858 | 2103 | |
c41f8cbd | 2104 | switch (req->qtcb->bottom.io.data_direction) { |
c9615858 CS |
2105 | case FSF_DATADIR_READ: |
2106 | lat = &unit->latencies.read; | |
2107 | break; | |
2108 | case FSF_DATADIR_WRITE: | |
2109 | lat = &unit->latencies.write; | |
2110 | break; | |
2111 | case FSF_DATADIR_CMND: | |
2112 | lat = &unit->latencies.cmd; | |
2113 | break; | |
2114 | default: | |
2115 | return; | |
2116 | } | |
2117 | ||
49f0f01c | 2118 | spin_lock(&unit->latencies.lock); |
c9615858 CS |
2119 | zfcp_fsf_update_lat(&lat->channel, lat_inf->channel_lat); |
2120 | zfcp_fsf_update_lat(&lat->fabric, lat_inf->fabric_lat); | |
2121 | lat->counter++; | |
49f0f01c | 2122 | spin_unlock(&unit->latencies.lock); |
1da177e4 LT |
2123 | } |
2124 | ||
0997f1c5 SR |
2125 | #ifdef CONFIG_BLK_DEV_IO_TRACE |
2126 | static void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req) | |
2127 | { | |
2128 | struct fsf_qual_latency_info *lat_inf; | |
2129 | struct scsi_cmnd *scsi_cmnd = (struct scsi_cmnd *)fsf_req->data; | |
2130 | struct request *req = scsi_cmnd->request; | |
2131 | struct zfcp_blk_drv_data trace; | |
2132 | int ticks = fsf_req->adapter->timer_ticks; | |
2133 | ||
2134 | trace.flags = 0; | |
2135 | trace.magic = ZFCP_BLK_DRV_DATA_MAGIC; | |
2136 | if (fsf_req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) { | |
2137 | trace.flags |= ZFCP_BLK_LAT_VALID; | |
2138 | lat_inf = &fsf_req->qtcb->prefix.prot_status_qual.latency_info; | |
2139 | trace.channel_lat = lat_inf->channel_lat * ticks; | |
2140 | trace.fabric_lat = lat_inf->fabric_lat * ticks; | |
2141 | } | |
2142 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
2143 | trace.flags |= ZFCP_BLK_REQ_ERROR; | |
2144 | trace.inb_usage = fsf_req->qdio_inb_usage; | |
2145 | trace.outb_usage = fsf_req->qdio_outb_usage; | |
2146 | ||
2147 | blk_add_driver_data(req->q, req, &trace, sizeof(trace)); | |
2148 | } | |
2149 | #else | |
2150 | static inline void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req) | |
2151 | { | |
2152 | } | |
2153 | #endif | |
2154 | ||
c41f8cbd | 2155 | static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2156 | { |
0ac55aa9 | 2157 | struct scsi_cmnd *scpnt; |
1da177e4 | 2158 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) |
c41f8cbd | 2159 | &(req->qtcb->bottom.io.fcp_rsp); |
1da177e4 | 2160 | u32 sns_len; |
f76af7d7 | 2161 | char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; |
1da177e4 | 2162 | unsigned long flags; |
1da177e4 | 2163 | |
c41f8cbd SS |
2164 | read_lock_irqsave(&req->adapter->abort_lock, flags); |
2165 | ||
0ac55aa9 SS |
2166 | scpnt = req->data; |
2167 | if (unlikely(!scpnt)) { | |
2168 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); | |
2169 | return; | |
2170 | } | |
2171 | ||
c41f8cbd | 2172 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ABORTED)) { |
feac6a07 | 2173 | set_host_byte(scpnt, DID_SOFT_ERROR); |
1da177e4 LT |
2174 | goto skip_fsfstatus; |
2175 | } | |
2176 | ||
c41f8cbd | 2177 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { |
feac6a07 | 2178 | set_host_byte(scpnt, DID_ERROR); |
1da177e4 LT |
2179 | goto skip_fsfstatus; |
2180 | } | |
2181 | ||
feac6a07 | 2182 | set_msg_byte(scpnt, COMMAND_COMPLETE); |
1da177e4 | 2183 | |
1da177e4 | 2184 | scpnt->result |= fcp_rsp_iu->scsi_status; |
1da177e4 | 2185 | |
c41f8cbd SS |
2186 | if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) |
2187 | zfcp_fsf_req_latency(req); | |
c9615858 | 2188 | |
0997f1c5 SR |
2189 | zfcp_fsf_trace_latency(req); |
2190 | ||
1da177e4 | 2191 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) { |
c41f8cbd | 2192 | if (fcp_rsp_info[3] == RSP_CODE_GOOD) |
feac6a07 | 2193 | set_host_byte(scpnt, DID_OK); |
c41f8cbd | 2194 | else { |
feac6a07 | 2195 | set_host_byte(scpnt, DID_ERROR); |
6f71d9bc | 2196 | goto skip_fsfstatus; |
1da177e4 LT |
2197 | } |
2198 | } | |
2199 | ||
1da177e4 | 2200 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_sns_len_valid)) { |
c41f8cbd SS |
2201 | sns_len = FSF_FCP_RSP_SIZE - sizeof(struct fcp_rsp_iu) + |
2202 | fcp_rsp_iu->fcp_rsp_len; | |
1da177e4 | 2203 | sns_len = min(sns_len, (u32) SCSI_SENSE_BUFFERSIZE); |
1da177e4 | 2204 | sns_len = min(sns_len, fcp_rsp_iu->fcp_sns_len); |
1da177e4 | 2205 | |
9d058ecf | 2206 | memcpy(scpnt->sense_buffer, |
1da177e4 | 2207 | zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len); |
1da177e4 LT |
2208 | } |
2209 | ||
1da177e4 | 2210 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_under)) { |
7936a892 FT |
2211 | scsi_set_resid(scpnt, fcp_rsp_iu->fcp_resid); |
2212 | if (scsi_bufflen(scpnt) - scsi_get_resid(scpnt) < | |
2213 | scpnt->underflow) | |
feac6a07 | 2214 | set_host_byte(scpnt, DID_ERROR); |
1da177e4 | 2215 | } |
c41f8cbd | 2216 | skip_fsfstatus: |
8a36e453 | 2217 | if (scpnt->result != 0) |
c41f8cbd | 2218 | zfcp_scsi_dbf_event_result("erro", 3, req->adapter, scpnt, req); |
8a36e453 | 2219 | else if (scpnt->retries > 0) |
c41f8cbd | 2220 | zfcp_scsi_dbf_event_result("retr", 4, req->adapter, scpnt, req); |
8a36e453 | 2221 | else |
c41f8cbd | 2222 | zfcp_scsi_dbf_event_result("norm", 6, req->adapter, scpnt, req); |
1da177e4 | 2223 | |
1da177e4 | 2224 | scpnt->host_scribble = NULL; |
1da177e4 | 2225 | (scpnt->scsi_done) (scpnt); |
1da177e4 LT |
2226 | /* |
2227 | * We must hold this lock until scsi_done has been called. | |
2228 | * Otherwise we may call scsi_done after abort regarding this | |
2229 | * command has completed. | |
2230 | * Note: scsi_done must not block! | |
2231 | */ | |
c41f8cbd | 2232 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); |
1da177e4 LT |
2233 | } |
2234 | ||
c41f8cbd | 2235 | static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2236 | { |
1da177e4 | 2237 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) |
c41f8cbd | 2238 | &(req->qtcb->bottom.io.fcp_rsp); |
f76af7d7 | 2239 | char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; |
1da177e4 | 2240 | |
c41f8cbd SS |
2241 | if ((fcp_rsp_info[3] != RSP_CODE_GOOD) || |
2242 | (req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
2243 | req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
2244 | } | |
2245 | ||
2246 | ||
2247 | static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req) | |
2248 | { | |
2249 | struct zfcp_unit *unit; | |
2250 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
2251 | ||
2252 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)) | |
2253 | unit = req->data; | |
2254 | else | |
2255 | unit = req->unit; | |
2256 | ||
2257 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
1da177e4 | 2258 | goto skip_fsfstatus; |
1da177e4 | 2259 | |
c41f8cbd SS |
2260 | switch (header->fsf_status) { |
2261 | case FSF_HANDLE_MISMATCH: | |
2262 | case FSF_PORT_HANDLE_NOT_VALID: | |
5ffd51a5 | 2263 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fssfch1", req); |
c41f8cbd SS |
2264 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2265 | break; | |
2266 | case FSF_FCPLUN_NOT_VALID: | |
2267 | case FSF_LUN_HANDLE_NOT_VALID: | |
5ffd51a5 | 2268 | zfcp_erp_port_reopen(unit->port, 0, "fssfch2", req); |
c41f8cbd | 2269 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2270 | break; |
c41f8cbd SS |
2271 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
2272 | zfcp_fsf_class_not_supp(req); | |
1da177e4 | 2273 | break; |
c41f8cbd SS |
2274 | case FSF_ACCESS_DENIED: |
2275 | zfcp_fsf_access_denied_unit(req, unit); | |
2276 | break; | |
2277 | case FSF_DIRECTION_INDICATOR_NOT_VALID: | |
2278 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
2279 | "Incorrect direction %d, unit 0x%016Lx on port " |
2280 | "0x%016Lx closed\n", | |
c41f8cbd | 2281 | req->qtcb->bottom.io.data_direction, |
7ba58c9c SS |
2282 | (unsigned long long)unit->fcp_lun, |
2283 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 SS |
2284 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch3", |
2285 | req); | |
c41f8cbd SS |
2286 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2287 | break; | |
2288 | case FSF_CMND_LENGTH_NOT_VALID: | |
2289 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
2290 | "Incorrect CDB length %d, unit 0x%016Lx on " |
2291 | "port 0x%016Lx closed\n", | |
c41f8cbd | 2292 | req->qtcb->bottom.io.fcp_cmnd_length, |
7ba58c9c SS |
2293 | (unsigned long long)unit->fcp_lun, |
2294 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 SS |
2295 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch4", |
2296 | req); | |
c41f8cbd SS |
2297 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2298 | break; | |
2299 | case FSF_PORT_BOXED: | |
5ffd51a5 | 2300 | zfcp_erp_port_boxed(unit->port, "fssfch5", req); |
c41f8cbd SS |
2301 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
2302 | ZFCP_STATUS_FSFREQ_RETRY; | |
2303 | break; | |
2304 | case FSF_LUN_BOXED: | |
5ffd51a5 | 2305 | zfcp_erp_unit_boxed(unit, "fssfch6", req); |
c41f8cbd SS |
2306 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
2307 | ZFCP_STATUS_FSFREQ_RETRY; | |
2308 | break; | |
2309 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
2310 | if (header->fsf_status_qual.word[0] == | |
2311 | FSF_SQ_INVOKE_LINK_TEST_PROCEDURE) | |
2312 | zfcp_test_link(unit->port); | |
2313 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 2314 | break; |
1da177e4 | 2315 | } |
c41f8cbd SS |
2316 | skip_fsfstatus: |
2317 | if (req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT) | |
2318 | zfcp_fsf_send_fcp_ctm_handler(req); | |
2319 | else { | |
2320 | zfcp_fsf_send_fcp_command_task_handler(req); | |
2321 | req->unit = NULL; | |
2322 | zfcp_unit_put(unit); | |
2323 | } | |
1da177e4 LT |
2324 | } |
2325 | ||
7ba58c9c SS |
2326 | static void zfcp_set_fcp_dl(struct fcp_cmnd_iu *fcp_cmd, u32 fcp_dl) |
2327 | { | |
2328 | u32 *fcp_dl_ptr; | |
2329 | ||
2330 | /* | |
2331 | * fcp_dl_addr = start address of fcp_cmnd structure + | |
2332 | * size of fixed part + size of dynamically sized add_dcp_cdb field | |
2333 | * SEE FCP-2 documentation | |
2334 | */ | |
2335 | fcp_dl_ptr = (u32 *) ((unsigned char *) &fcp_cmd[1] + | |
2336 | (fcp_cmd->add_fcp_cdb_length << 2)); | |
2337 | *fcp_dl_ptr = fcp_dl; | |
2338 | } | |
2339 | ||
c41f8cbd SS |
2340 | /** |
2341 | * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command) | |
c41f8cbd SS |
2342 | * @unit: unit where command is sent to |
2343 | * @scsi_cmnd: scsi command to be sent | |
1da177e4 | 2344 | */ |
63caf367 CS |
2345 | int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit, |
2346 | struct scsi_cmnd *scsi_cmnd) | |
1da177e4 | 2347 | { |
c41f8cbd SS |
2348 | struct zfcp_fsf_req *req; |
2349 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
bc90c863 | 2350 | unsigned int sbtype = SBAL_FLAGS0_TYPE_READ; |
c41f8cbd | 2351 | int real_bytes, retval = -EIO; |
63caf367 | 2352 | struct zfcp_adapter *adapter = unit->port->adapter; |
1da177e4 | 2353 | |
c41f8cbd SS |
2354 | if (unlikely(!(atomic_read(&unit->status) & |
2355 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2356 | return -EBUSY; | |
1da177e4 | 2357 | |
0406289e | 2358 | spin_lock(&adapter->req_q_lock); |
8fdf30d5 CS |
2359 | if (atomic_read(&adapter->req_q.count) <= 0) { |
2360 | atomic_inc(&adapter->qdio_outb_full); | |
c41f8cbd | 2361 | goto out; |
8fdf30d5 | 2362 | } |
63caf367 CS |
2363 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, |
2364 | ZFCP_REQ_AUTO_CLEANUP, | |
c41f8cbd | 2365 | adapter->pool.fsf_req_scsi); |
025270f0 | 2366 | if (IS_ERR(req)) { |
c41f8cbd SS |
2367 | retval = PTR_ERR(req); |
2368 | goto out; | |
2369 | } | |
2370 | ||
2371 | zfcp_unit_get(unit); | |
2372 | req->unit = unit; | |
2373 | req->data = scsi_cmnd; | |
2374 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2375 | req->qtcb->header.lun_handle = unit->handle; | |
2376 | req->qtcb->header.port_handle = unit->port->handle; | |
2377 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
2378 | ||
2379 | scsi_cmnd->host_scribble = (unsigned char *) req->req_id; | |
2380 | ||
2381 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) &(req->qtcb->bottom.io.fcp_cmnd); | |
2382 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
2383 | /* | |
2384 | * set depending on data direction: | |
2385 | * data direction bits in SBALE (SB Type) | |
2386 | * data direction bits in QTCB | |
2387 | * data direction bits in FCP_CMND IU | |
2388 | */ | |
2389 | switch (scsi_cmnd->sc_data_direction) { | |
2390 | case DMA_NONE: | |
2391 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
1da177e4 | 2392 | break; |
c41f8cbd SS |
2393 | case DMA_FROM_DEVICE: |
2394 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ; | |
c41f8cbd SS |
2395 | fcp_cmnd_iu->rddata = 1; |
2396 | break; | |
2397 | case DMA_TO_DEVICE: | |
2398 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE; | |
2399 | sbtype = SBAL_FLAGS0_TYPE_WRITE; | |
2400 | fcp_cmnd_iu->wddata = 1; | |
1da177e4 | 2401 | break; |
c41f8cbd | 2402 | case DMA_BIDIRECTIONAL: |
c41f8cbd | 2403 | goto failed_scsi_cmnd; |
1da177e4 LT |
2404 | } |
2405 | ||
c41f8cbd SS |
2406 | if (likely((scsi_cmnd->device->simple_tags) || |
2407 | ((atomic_read(&unit->status) & ZFCP_STATUS_UNIT_READONLY) && | |
2408 | (atomic_read(&unit->status) & ZFCP_STATUS_UNIT_SHARED)))) | |
2409 | fcp_cmnd_iu->task_attribute = SIMPLE_Q; | |
2410 | else | |
2411 | fcp_cmnd_iu->task_attribute = UNTAGGED; | |
1da177e4 | 2412 | |
c41f8cbd SS |
2413 | if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH)) |
2414 | fcp_cmnd_iu->add_fcp_cdb_length = | |
2415 | (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2; | |
1da177e4 | 2416 | |
c41f8cbd | 2417 | memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); |
45633fdc | 2418 | |
c41f8cbd | 2419 | req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + |
7ba58c9c | 2420 | fcp_cmnd_iu->add_fcp_cdb_length + sizeof(u32); |
1da177e4 | 2421 | |
c41f8cbd SS |
2422 | real_bytes = zfcp_qdio_sbals_from_sg(req, sbtype, |
2423 | scsi_sglist(scsi_cmnd), | |
2424 | FSF_MAX_SBALS_PER_REQ); | |
2425 | if (unlikely(real_bytes < 0)) { | |
bc90c863 | 2426 | if (req->sbal_number >= FSF_MAX_SBALS_PER_REQ) { |
c41f8cbd | 2427 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
2428 | "Oversize data package, unit 0x%016Lx " |
2429 | "on port 0x%016Lx closed\n", | |
7ba58c9c SS |
2430 | (unsigned long long)unit->fcp_lun, |
2431 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 2432 | zfcp_erp_unit_shutdown(unit, 0, "fssfct1", req); |
c41f8cbd SS |
2433 | retval = -EINVAL; |
2434 | } | |
2435 | goto failed_scsi_cmnd; | |
1da177e4 | 2436 | } |
1da177e4 | 2437 | |
c41f8cbd | 2438 | zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes); |
1da177e4 | 2439 | |
c41f8cbd SS |
2440 | retval = zfcp_fsf_req_send(req); |
2441 | if (unlikely(retval)) | |
2442 | goto failed_scsi_cmnd; | |
1da177e4 | 2443 | |
c41f8cbd | 2444 | goto out; |
1da177e4 | 2445 | |
c41f8cbd SS |
2446 | failed_scsi_cmnd: |
2447 | zfcp_unit_put(unit); | |
2448 | zfcp_fsf_req_free(req); | |
2449 | scsi_cmnd->host_scribble = NULL; | |
2450 | out: | |
0406289e | 2451 | spin_unlock(&adapter->req_q_lock); |
c41f8cbd | 2452 | return retval; |
1da177e4 LT |
2453 | } |
2454 | ||
2455 | /** | |
c41f8cbd | 2456 | * zfcp_fsf_send_fcp_ctm - send SCSI task management command |
c41f8cbd SS |
2457 | * @unit: pointer to struct zfcp_unit |
2458 | * @tm_flags: unsigned byte for task management flags | |
c41f8cbd | 2459 | * Returns: on success pointer to struct fsf_req, NULL otherwise |
1da177e4 | 2460 | */ |
63caf367 | 2461 | struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *unit, u8 tm_flags) |
1da177e4 | 2462 | { |
44cc76f2 | 2463 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2464 | struct zfcp_fsf_req *req = NULL; |
2465 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
63caf367 | 2466 | struct zfcp_adapter *adapter = unit->port->adapter; |
1da177e4 | 2467 | |
c41f8cbd SS |
2468 | if (unlikely(!(atomic_read(&unit->status) & |
2469 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2470 | return NULL; | |
1da177e4 | 2471 | |
92cab0d9 CS |
2472 | spin_lock_bh(&adapter->req_q_lock); |
2473 | if (zfcp_fsf_req_sbal_get(adapter)) | |
c41f8cbd | 2474 | goto out; |
63caf367 | 2475 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, 0, |
c41f8cbd | 2476 | adapter->pool.fsf_req_scsi); |
633528c3 SS |
2477 | if (IS_ERR(req)) { |
2478 | req = NULL; | |
c41f8cbd | 2479 | goto out; |
633528c3 | 2480 | } |
1da177e4 | 2481 | |
c41f8cbd SS |
2482 | req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT; |
2483 | req->data = unit; | |
2484 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2485 | req->qtcb->header.lun_handle = unit->handle; | |
2486 | req->qtcb->header.port_handle = unit->port->handle; | |
2487 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
2488 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
2489 | req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + | |
7ba58c9c | 2490 | sizeof(u32); |
c41f8cbd SS |
2491 | |
2492 | sbale = zfcp_qdio_sbale_req(req); | |
2493 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE; | |
2494 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 2495 | |
c41f8cbd SS |
2496 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) &req->qtcb->bottom.io.fcp_cmnd; |
2497 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
2498 | fcp_cmnd_iu->task_management_flags = tm_flags; | |
1da177e4 | 2499 | |
c41f8cbd SS |
2500 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); |
2501 | if (!zfcp_fsf_req_send(req)) | |
2502 | goto out; | |
1da177e4 | 2503 | |
c41f8cbd SS |
2504 | zfcp_fsf_req_free(req); |
2505 | req = NULL; | |
2506 | out: | |
92cab0d9 | 2507 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
2508 | return req; |
2509 | } | |
1da177e4 | 2510 | |
c41f8cbd SS |
2511 | static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req) |
2512 | { | |
1da177e4 LT |
2513 | } |
2514 | ||
c41f8cbd SS |
2515 | /** |
2516 | * zfcp_fsf_control_file - control file upload/download | |
2517 | * @adapter: pointer to struct zfcp_adapter | |
2518 | * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc | |
2519 | * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise | |
1da177e4 | 2520 | */ |
c41f8cbd SS |
2521 | struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, |
2522 | struct zfcp_fsf_cfdc *fsf_cfdc) | |
1da177e4 | 2523 | { |
44cc76f2 | 2524 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2525 | struct zfcp_fsf_req *req = NULL; |
2526 | struct fsf_qtcb_bottom_support *bottom; | |
2527 | int direction, retval = -EIO, bytes; | |
2528 | ||
2529 | if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) | |
2530 | return ERR_PTR(-EOPNOTSUPP); | |
2531 | ||
2532 | switch (fsf_cfdc->command) { | |
2533 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
2534 | direction = SBAL_FLAGS0_TYPE_WRITE; | |
2535 | break; | |
2536 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
2537 | direction = SBAL_FLAGS0_TYPE_READ; | |
2538 | break; | |
2539 | default: | |
2540 | return ERR_PTR(-EINVAL); | |
2541 | } | |
1da177e4 | 2542 | |
0406289e | 2543 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
2544 | if (zfcp_fsf_req_sbal_get(adapter)) |
2545 | goto out; | |
1da177e4 | 2546 | |
c41f8cbd | 2547 | req = zfcp_fsf_req_create(adapter, fsf_cfdc->command, 0, NULL); |
025270f0 | 2548 | if (IS_ERR(req)) { |
c41f8cbd SS |
2549 | retval = -EPERM; |
2550 | goto out; | |
2551 | } | |
1da177e4 | 2552 | |
c41f8cbd | 2553 | req->handler = zfcp_fsf_control_file_handler; |
1da177e4 | 2554 | |
c41f8cbd SS |
2555 | sbale = zfcp_qdio_sbale_req(req); |
2556 | sbale[0].flags |= direction; | |
8a36e453 | 2557 | |
c41f8cbd SS |
2558 | bottom = &req->qtcb->bottom.support; |
2559 | bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE; | |
2560 | bottom->option = fsf_cfdc->option; | |
8a36e453 | 2561 | |
c41f8cbd SS |
2562 | bytes = zfcp_qdio_sbals_from_sg(req, direction, fsf_cfdc->sg, |
2563 | FSF_MAX_SBALS_PER_REQ); | |
2564 | if (bytes != ZFCP_CFDC_MAX_SIZE) { | |
c41f8cbd SS |
2565 | zfcp_fsf_req_free(req); |
2566 | goto out; | |
2567 | } | |
1da177e4 | 2568 | |
c41f8cbd SS |
2569 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
2570 | retval = zfcp_fsf_req_send(req); | |
2571 | out: | |
0406289e | 2572 | spin_unlock_bh(&adapter->req_q_lock); |
8a36e453 | 2573 | |
c41f8cbd SS |
2574 | if (!retval) { |
2575 | wait_event(req->completion_wq, | |
2576 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
2577 | return req; | |
1da177e4 | 2578 | } |
c41f8cbd | 2579 | return ERR_PTR(retval); |
1da177e4 | 2580 | } |