Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
553448f6 | 2 | * zfcp device driver |
1da177e4 | 3 | * |
553448f6 | 4 | * Implementation of FSF commands. |
1da177e4 | 5 | * |
553448f6 | 6 | * Copyright IBM Corporation 2002, 2008 |
1da177e4 LT |
7 | */ |
8 | ||
ecf39d42 CS |
9 | #define KMSG_COMPONENT "zfcp" |
10 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt | |
11 | ||
0997f1c5 | 12 | #include <linux/blktrace_api.h> |
1da177e4 LT |
13 | #include "zfcp_ext.h" |
14 | ||
63caf367 CS |
15 | #define ZFCP_REQ_AUTO_CLEANUP 0x00000002 |
16 | #define ZFCP_REQ_NO_QTCB 0x00000008 | |
17 | ||
287ac01a CS |
18 | static void zfcp_fsf_request_timeout_handler(unsigned long data) |
19 | { | |
20 | struct zfcp_adapter *adapter = (struct zfcp_adapter *) data; | |
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; |
698ec016 | 175 | |
c41f8cbd | 176 | if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED) |
ee69ab7a MS |
177 | return; |
178 | ||
179 | atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status); | |
180 | ||
c41f8cbd | 181 | if (!link_down) |
2f8f3ed5 | 182 | goto out; |
ee69ab7a | 183 | |
aef4a983 MS |
184 | switch (link_down->error_code) { |
185 | case FSF_PSQ_LINK_NO_LIGHT: | |
c41f8cbd | 186 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
187 | "There is no light signal from the local " |
188 | "fibre channel cable\n"); | |
aef4a983 MS |
189 | break; |
190 | case FSF_PSQ_LINK_WRAP_PLUG: | |
c41f8cbd | 191 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
192 | "There is a wrap plug instead of a fibre " |
193 | "channel cable\n"); | |
aef4a983 MS |
194 | break; |
195 | case FSF_PSQ_LINK_NO_FCP: | |
c41f8cbd | 196 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
197 | "The adjacent fibre channel node does not " |
198 | "support FCP\n"); | |
aef4a983 MS |
199 | break; |
200 | case FSF_PSQ_LINK_FIRMWARE_UPDATE: | |
c41f8cbd | 201 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
202 | "The FCP device is suspended because of a " |
203 | "firmware update\n"); | |
553448f6 | 204 | break; |
aef4a983 | 205 | case FSF_PSQ_LINK_INVALID_WWPN: |
c41f8cbd | 206 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
207 | "The FCP device detected a WWPN that is " |
208 | "duplicate or not valid\n"); | |
aef4a983 MS |
209 | break; |
210 | case FSF_PSQ_LINK_NO_NPIV_SUPPORT: | |
c41f8cbd | 211 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 212 | "The fibre channel fabric does not support NPIV\n"); |
aef4a983 MS |
213 | break; |
214 | case FSF_PSQ_LINK_NO_FCP_RESOURCES: | |
c41f8cbd | 215 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 216 | "The FCP adapter cannot support more NPIV ports\n"); |
aef4a983 MS |
217 | break; |
218 | case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: | |
c41f8cbd | 219 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
220 | "The adjacent switch cannot support " |
221 | "more NPIV ports\n"); | |
aef4a983 MS |
222 | break; |
223 | case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: | |
c41f8cbd | 224 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
225 | "The FCP adapter could not log in to the " |
226 | "fibre channel fabric\n"); | |
aef4a983 MS |
227 | break; |
228 | case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: | |
c41f8cbd | 229 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
230 | "The WWPN assignment file on the FCP adapter " |
231 | "has been damaged\n"); | |
aef4a983 MS |
232 | break; |
233 | case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: | |
c41f8cbd | 234 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
235 | "The mode table on the FCP adapter " |
236 | "has been damaged\n"); | |
aef4a983 MS |
237 | break; |
238 | case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: | |
c41f8cbd | 239 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
240 | "All NPIV ports on the FCP adapter have " |
241 | "been assigned\n"); | |
aef4a983 MS |
242 | break; |
243 | default: | |
c41f8cbd | 244 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
245 | "The link between the FCP adapter and " |
246 | "the FC fabric is down\n"); | |
aef4a983 | 247 | } |
c41f8cbd SS |
248 | out: |
249 | zfcp_erp_adapter_failed(adapter, id, req); | |
aef4a983 MS |
250 | } |
251 | ||
c41f8cbd | 252 | static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req) |
1da177e4 | 253 | { |
c41f8cbd SS |
254 | struct fsf_status_read_buffer *sr_buf = req->data; |
255 | struct fsf_link_down_info *ldi = | |
256 | (struct fsf_link_down_info *) &sr_buf->payload; | |
1da177e4 | 257 | |
c41f8cbd SS |
258 | switch (sr_buf->status_subtype) { |
259 | case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: | |
5ffd51a5 | 260 | zfcp_fsf_link_down_info_eval(req, "fssrld1", ldi); |
1da177e4 | 261 | break; |
c41f8cbd | 262 | case FSF_STATUS_READ_SUB_FDISC_FAILED: |
5ffd51a5 | 263 | zfcp_fsf_link_down_info_eval(req, "fssrld2", ldi); |
1da177e4 | 264 | break; |
c41f8cbd | 265 | case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE: |
5ffd51a5 | 266 | zfcp_fsf_link_down_info_eval(req, "fssrld3", NULL); |
c41f8cbd SS |
267 | }; |
268 | } | |
1da177e4 | 269 | |
c41f8cbd SS |
270 | static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) |
271 | { | |
272 | struct zfcp_adapter *adapter = req->adapter; | |
273 | struct fsf_status_read_buffer *sr_buf = req->data; | |
1da177e4 | 274 | |
c41f8cbd SS |
275 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
276 | zfcp_hba_dbf_event_fsf_unsol("dism", adapter, sr_buf); | |
277 | mempool_free(sr_buf, adapter->pool.data_status_read); | |
278 | zfcp_fsf_req_free(req); | |
279 | return; | |
280 | } | |
1da177e4 | 281 | |
c41f8cbd | 282 | zfcp_hba_dbf_event_fsf_unsol("read", adapter, sr_buf); |
1da177e4 | 283 | |
c41f8cbd SS |
284 | switch (sr_buf->status_type) { |
285 | case FSF_STATUS_READ_PORT_CLOSED: | |
286 | zfcp_fsf_status_read_port_closed(req); | |
1da177e4 | 287 | break; |
c41f8cbd SS |
288 | case FSF_STATUS_READ_INCOMING_ELS: |
289 | zfcp_fc_incoming_els(req); | |
1da177e4 | 290 | break; |
c41f8cbd | 291 | case FSF_STATUS_READ_SENSE_DATA_AVAIL: |
1da177e4 | 292 | break; |
c41f8cbd | 293 | case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: |
ff3b24fa CS |
294 | dev_warn(&adapter->ccw_device->dev, |
295 | "The error threshold for checksum statistics " | |
296 | "has been exceeded\n"); | |
57069386 | 297 | zfcp_hba_dbf_event_berr(adapter, req); |
1da177e4 | 298 | break; |
c41f8cbd SS |
299 | case FSF_STATUS_READ_LINK_DOWN: |
300 | zfcp_fsf_status_read_link_down(req); | |
301 | break; | |
302 | case FSF_STATUS_READ_LINK_UP: | |
303 | dev_info(&adapter->ccw_device->dev, | |
ff3b24fa | 304 | "The local link has been restored\n"); |
c41f8cbd | 305 | /* All ports should be marked as ready to run again */ |
5ffd51a5 | 306 | zfcp_erp_modify_adapter_status(adapter, "fssrh_1", NULL, |
c41f8cbd SS |
307 | ZFCP_STATUS_COMMON_RUNNING, |
308 | ZFCP_SET); | |
309 | zfcp_erp_adapter_reopen(adapter, | |
310 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
311 | ZFCP_STATUS_COMMON_ERP_FAILED, | |
5ffd51a5 | 312 | "fssrh_2", req); |
c41f8cbd SS |
313 | break; |
314 | case FSF_STATUS_READ_NOTIFICATION_LOST: | |
315 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED) | |
5ffd51a5 SS |
316 | zfcp_erp_adapter_access_changed(adapter, "fssrh_3", |
317 | req); | |
c41f8cbd SS |
318 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS) |
319 | schedule_work(&adapter->scan_work); | |
320 | break; | |
321 | case FSF_STATUS_READ_CFDC_UPDATED: | |
5ffd51a5 | 322 | zfcp_erp_adapter_access_changed(adapter, "fssrh_4", req); |
c41f8cbd SS |
323 | break; |
324 | case FSF_STATUS_READ_FEATURE_UPDATE_ALERT: | |
325 | adapter->adapter_features = sr_buf->payload.word[0]; | |
1da177e4 | 326 | break; |
1da177e4 LT |
327 | } |
328 | ||
c41f8cbd SS |
329 | mempool_free(sr_buf, adapter->pool.data_status_read); |
330 | zfcp_fsf_req_free(req); | |
1da177e4 | 331 | |
c41f8cbd | 332 | atomic_inc(&adapter->stat_miss); |
b7f15f3c | 333 | queue_work(zfcp_data.work_queue, &adapter->stat_work); |
c41f8cbd | 334 | } |
1da177e4 | 335 | |
c41f8cbd SS |
336 | static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req) |
337 | { | |
338 | switch (req->qtcb->header.fsf_status_qual.word[0]) { | |
339 | case FSF_SQ_FCP_RSP_AVAILABLE: | |
340 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
341 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
342 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
343 | return; | |
344 | case FSF_SQ_COMMAND_ABORTED: | |
345 | req->status |= ZFCP_STATUS_FSFREQ_ABORTED; | |
346 | break; | |
347 | case FSF_SQ_NO_RECOM: | |
348 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
349 | "The FCP adapter reported a problem " |
350 | "that cannot be recovered\n"); | |
5ffd51a5 | 351 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1", req); |
c41f8cbd SS |
352 | break; |
353 | } | |
354 | /* all non-return stats set FSFREQ_ERROR*/ | |
355 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
356 | } |
357 | ||
c41f8cbd | 358 | static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req) |
1da177e4 | 359 | { |
c41f8cbd SS |
360 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
361 | return; | |
1da177e4 | 362 | |
c41f8cbd SS |
363 | switch (req->qtcb->header.fsf_status) { |
364 | case FSF_UNKNOWN_COMMAND: | |
365 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa | 366 | "The FCP adapter does not recognize the command 0x%x\n", |
c41f8cbd | 367 | req->qtcb->header.fsf_command); |
5ffd51a5 | 368 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1", req); |
c41f8cbd SS |
369 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
370 | break; | |
371 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
372 | zfcp_fsf_fsfstatus_qual_eval(req); | |
373 | break; | |
374 | } | |
375 | } | |
1da177e4 | 376 | |
c41f8cbd SS |
377 | static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) |
378 | { | |
379 | struct zfcp_adapter *adapter = req->adapter; | |
380 | struct fsf_qtcb *qtcb = req->qtcb; | |
381 | union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual; | |
1da177e4 | 382 | |
c41f8cbd | 383 | zfcp_hba_dbf_event_fsf_response(req); |
1da177e4 | 384 | |
c41f8cbd SS |
385 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
386 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
387 | ZFCP_STATUS_FSFREQ_RETRY; /* only for SCSI cmnds. */ | |
388 | return; | |
389 | } | |
1da177e4 | 390 | |
c41f8cbd SS |
391 | switch (qtcb->prefix.prot_status) { |
392 | case FSF_PROT_GOOD: | |
393 | case FSF_PROT_FSF_STATUS_PRESENTED: | |
394 | return; | |
395 | case FSF_PROT_QTCB_VERSION_ERROR: | |
396 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
397 | "QTCB version 0x%x not supported by FCP adapter " |
398 | "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION, | |
399 | psq->word[0], psq->word[1]); | |
5ffd51a5 | 400 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1", req); |
c41f8cbd SS |
401 | break; |
402 | case FSF_PROT_ERROR_STATE: | |
403 | case FSF_PROT_SEQ_NUMB_ERROR: | |
5ffd51a5 | 404 | zfcp_erp_adapter_reopen(adapter, 0, "fspse_2", req); |
c41f8cbd SS |
405 | req->status |= ZFCP_STATUS_FSFREQ_RETRY; |
406 | break; | |
407 | case FSF_PROT_UNSUPP_QTCB_TYPE: | |
408 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 409 | "The QTCB type is not supported by the FCP adapter\n"); |
5ffd51a5 | 410 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3", req); |
c41f8cbd SS |
411 | break; |
412 | case FSF_PROT_HOST_CONNECTION_INITIALIZING: | |
413 | atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT, | |
414 | &adapter->status); | |
415 | break; | |
416 | case FSF_PROT_DUPLICATE_REQUEST_ID: | |
417 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 418 | "0x%Lx is an ambiguous request identifier\n", |
c41f8cbd | 419 | (unsigned long long)qtcb->bottom.support.req_handle); |
5ffd51a5 | 420 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_4", req); |
c41f8cbd SS |
421 | break; |
422 | case FSF_PROT_LINK_DOWN: | |
5ffd51a5 SS |
423 | zfcp_fsf_link_down_info_eval(req, "fspse_5", |
424 | &psq->link_down_info); | |
c41f8cbd | 425 | /* FIXME: reopening adapter now? better wait for link up */ |
5ffd51a5 | 426 | zfcp_erp_adapter_reopen(adapter, 0, "fspse_6", req); |
c41f8cbd SS |
427 | break; |
428 | case FSF_PROT_REEST_QUEUE: | |
429 | /* All ports should be marked as ready to run again */ | |
5ffd51a5 | 430 | zfcp_erp_modify_adapter_status(adapter, "fspse_7", NULL, |
c41f8cbd SS |
431 | ZFCP_STATUS_COMMON_RUNNING, |
432 | ZFCP_SET); | |
433 | zfcp_erp_adapter_reopen(adapter, | |
434 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
5ffd51a5 SS |
435 | ZFCP_STATUS_COMMON_ERP_FAILED, |
436 | "fspse_8", req); | |
c41f8cbd SS |
437 | break; |
438 | default: | |
439 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 440 | "0x%x is not a valid transfer protocol status\n", |
c41f8cbd | 441 | qtcb->prefix.prot_status); |
5ffd51a5 | 442 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9", req); |
c41f8cbd SS |
443 | } |
444 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
445 | } |
446 | ||
c41f8cbd SS |
447 | /** |
448 | * zfcp_fsf_req_complete - process completion of a FSF request | |
449 | * @fsf_req: The FSF request that has been completed. | |
450 | * | |
451 | * When a request has been completed either from the FCP adapter, | |
452 | * or it has been dismissed due to a queue shutdown, this function | |
453 | * is called to process the completion status and trigger further | |
454 | * events related to the FSF request. | |
455 | */ | |
456 | void zfcp_fsf_req_complete(struct zfcp_fsf_req *req) | |
1da177e4 | 457 | { |
c41f8cbd SS |
458 | if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) { |
459 | zfcp_fsf_status_read_handler(req); | |
460 | return; | |
461 | } | |
1da177e4 | 462 | |
c41f8cbd SS |
463 | del_timer(&req->timer); |
464 | zfcp_fsf_protstatus_eval(req); | |
465 | zfcp_fsf_fsfstatus_eval(req); | |
466 | req->handler(req); | |
1da177e4 | 467 | |
c41f8cbd | 468 | if (req->erp_action) |
287ac01a | 469 | zfcp_erp_notify(req->erp_action, 0); |
c41f8cbd | 470 | req->status |= ZFCP_STATUS_FSFREQ_COMPLETED; |
1da177e4 | 471 | |
c41f8cbd SS |
472 | if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP)) |
473 | zfcp_fsf_req_free(req); | |
474 | else | |
475 | /* notify initiator waiting for the requests completion */ | |
476 | /* | |
477 | * FIXME: Race! We must not access fsf_req here as it might have been | |
478 | * cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED | |
479 | * flag. It's an improbable case. But, we have the same paranoia for | |
480 | * the cleanup flag already. | |
481 | * Might better be handled using complete()? | |
482 | * (setting the flag and doing wakeup ought to be atomic | |
483 | * with regard to checking the flag as long as waitqueue is | |
484 | * part of the to be released structure) | |
485 | */ | |
486 | wake_up(&req->completion_wq); | |
487 | } | |
1da177e4 | 488 | |
c41f8cbd SS |
489 | static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req) |
490 | { | |
491 | struct fsf_qtcb_bottom_config *bottom; | |
492 | struct zfcp_adapter *adapter = req->adapter; | |
493 | struct Scsi_Host *shost = adapter->scsi_host; | |
1da177e4 | 494 | |
c41f8cbd | 495 | bottom = &req->qtcb->bottom.config; |
1da177e4 | 496 | |
c41f8cbd SS |
497 | if (req->data) |
498 | memcpy(req->data, bottom, sizeof(*bottom)); | |
499 | ||
500 | fc_host_node_name(shost) = bottom->nport_serv_param.wwnn; | |
501 | fc_host_port_name(shost) = bottom->nport_serv_param.wwpn; | |
502 | fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK; | |
503 | fc_host_speed(shost) = bottom->fc_link_speed; | |
504 | fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3; | |
505 | ||
506 | adapter->hydra_version = bottom->adapter_type; | |
507 | adapter->timer_ticks = bottom->timer_interval; | |
508 | ||
509 | if (fc_host_permanent_port_name(shost) == -1) | |
510 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
511 | ||
512 | switch (bottom->fc_topology) { | |
513 | case FSF_TOPO_P2P: | |
514 | adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK; | |
515 | adapter->peer_wwpn = bottom->plogi_payload.wwpn; | |
516 | adapter->peer_wwnn = bottom->plogi_payload.wwnn; | |
517 | fc_host_port_type(shost) = FC_PORTTYPE_PTP; | |
c41f8cbd SS |
518 | break; |
519 | case FSF_TOPO_FABRIC: | |
520 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
c41f8cbd SS |
521 | break; |
522 | case FSF_TOPO_AL: | |
523 | fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; | |
c41f8cbd | 524 | default: |
c41f8cbd | 525 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
526 | "Unknown or unsupported arbitrated loop " |
527 | "fibre channel topology detected\n"); | |
5ffd51a5 | 528 | zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1", req); |
c41f8cbd | 529 | return -EIO; |
1da177e4 | 530 | } |
c41f8cbd | 531 | |
1da177e4 LT |
532 | return 0; |
533 | } | |
534 | ||
c41f8cbd | 535 | static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) |
553448f6 CS |
536 | { |
537 | struct zfcp_adapter *adapter = req->adapter; | |
c41f8cbd SS |
538 | struct fsf_qtcb *qtcb = req->qtcb; |
539 | struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config; | |
540 | struct Scsi_Host *shost = adapter->scsi_host; | |
553448f6 | 541 | |
c41f8cbd SS |
542 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
543 | return; | |
1da177e4 | 544 | |
c41f8cbd SS |
545 | adapter->fsf_lic_version = bottom->lic_version; |
546 | adapter->adapter_features = bottom->adapter_features; | |
547 | adapter->connection_features = bottom->connection_features; | |
548 | adapter->peer_wwpn = 0; | |
549 | adapter->peer_wwnn = 0; | |
550 | adapter->peer_d_id = 0; | |
8a36e453 | 551 | |
c41f8cbd SS |
552 | switch (qtcb->header.fsf_status) { |
553 | case FSF_GOOD: | |
554 | if (zfcp_fsf_exchange_config_evaluate(req)) | |
555 | return; | |
1da177e4 | 556 | |
c41f8cbd SS |
557 | if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { |
558 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
559 | "FCP adapter maximum QTCB size (%d bytes) " |
560 | "is too small\n", | |
561 | bottom->max_qtcb_size); | |
5ffd51a5 | 562 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1", req); |
c41f8cbd SS |
563 | return; |
564 | } | |
565 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, | |
566 | &adapter->status); | |
1da177e4 | 567 | break; |
c41f8cbd SS |
568 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
569 | fc_host_node_name(shost) = 0; | |
570 | fc_host_port_name(shost) = 0; | |
571 | fc_host_port_id(shost) = 0; | |
572 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; | |
573 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; | |
574 | adapter->hydra_version = 0; | |
1da177e4 | 575 | |
c41f8cbd SS |
576 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, |
577 | &adapter->status); | |
1da177e4 | 578 | |
5ffd51a5 | 579 | zfcp_fsf_link_down_info_eval(req, "fsecdh2", |
c41f8cbd | 580 | &qtcb->header.fsf_status_qual.link_down_info); |
1da177e4 | 581 | break; |
c41f8cbd | 582 | default: |
5ffd51a5 | 583 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3", req); |
c41f8cbd SS |
584 | return; |
585 | } | |
1da177e4 | 586 | |
c41f8cbd SS |
587 | if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) { |
588 | adapter->hardware_version = bottom->hardware_version; | |
589 | memcpy(fc_host_serial_number(shost), bottom->serial_number, | |
590 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
591 | EBCASC(fc_host_serial_number(shost), | |
592 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
593 | } | |
1da177e4 | 594 | |
c41f8cbd SS |
595 | if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) { |
596 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
597 | "The FCP adapter only supports newer " |
598 | "control block versions\n"); | |
5ffd51a5 | 599 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4", req); |
c41f8cbd SS |
600 | return; |
601 | } | |
602 | if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) { | |
603 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
604 | "The FCP adapter only supports older " |
605 | "control block versions\n"); | |
5ffd51a5 | 606 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5", req); |
c41f8cbd SS |
607 | } |
608 | } | |
1da177e4 | 609 | |
c41f8cbd SS |
610 | static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req) |
611 | { | |
612 | struct zfcp_adapter *adapter = req->adapter; | |
613 | struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port; | |
614 | struct Scsi_Host *shost = adapter->scsi_host; | |
1da177e4 | 615 | |
c41f8cbd SS |
616 | if (req->data) |
617 | memcpy(req->data, bottom, sizeof(*bottom)); | |
9eb69aff | 618 | |
c41f8cbd SS |
619 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) |
620 | fc_host_permanent_port_name(shost) = bottom->wwpn; | |
621 | else | |
622 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
623 | fc_host_maxframe_size(shost) = bottom->maximum_frame_size; | |
624 | fc_host_supported_speeds(shost) = bottom->supported_speed; | |
625 | } | |
1da177e4 | 626 | |
c41f8cbd SS |
627 | static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) |
628 | { | |
c41f8cbd SS |
629 | struct fsf_qtcb *qtcb = req->qtcb; |
630 | ||
631 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
632 | return; | |
633 | ||
634 | switch (qtcb->header.fsf_status) { | |
635 | case FSF_GOOD: | |
636 | zfcp_fsf_exchange_port_evaluate(req); | |
c41f8cbd SS |
637 | break; |
638 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: | |
639 | zfcp_fsf_exchange_port_evaluate(req); | |
5ffd51a5 | 640 | zfcp_fsf_link_down_info_eval(req, "fsepdh1", |
c41f8cbd | 641 | &qtcb->header.fsf_status_qual.link_down_info); |
aef4a983 | 642 | break; |
1da177e4 | 643 | } |
c41f8cbd | 644 | } |
d26ab06e | 645 | |
c41f8cbd | 646 | static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter) |
dedbc2b3 CS |
647 | __releases(&adapter->req_q_lock) |
648 | __acquires(&adapter->req_q_lock) | |
c41f8cbd | 649 | { |
dedbc2b3 | 650 | struct zfcp_qdio_queue *req_q = &adapter->req_q; |
c41f8cbd | 651 | long ret; |
c41f8cbd | 652 | |
dedbc2b3 CS |
653 | if (atomic_read(&req_q->count) <= -REQUEST_LIST_SIZE) |
654 | return -EIO; | |
655 | if (atomic_read(&req_q->count) > 0) | |
656 | return 0; | |
657 | ||
658 | atomic_dec(&req_q->count); | |
0406289e | 659 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 660 | ret = wait_event_interruptible_timeout(adapter->request_wq, |
dedbc2b3 CS |
661 | atomic_read(&req_q->count) >= 0, |
662 | 5 * HZ); | |
663 | spin_lock_bh(&adapter->req_q_lock); | |
664 | atomic_inc(&req_q->count); | |
665 | ||
c41f8cbd SS |
666 | if (ret > 0) |
667 | return 0; | |
2450d3e7 SR |
668 | if (!ret) |
669 | atomic_inc(&adapter->qdio_outb_full); | |
c41f8cbd SS |
670 | return -EIO; |
671 | } | |
672 | ||
673 | static struct zfcp_fsf_req *zfcp_fsf_alloc_noqtcb(mempool_t *pool) | |
674 | { | |
675 | struct zfcp_fsf_req *req; | |
676 | req = mempool_alloc(pool, GFP_ATOMIC); | |
677 | if (!req) | |
678 | return NULL; | |
679 | memset(req, 0, sizeof(*req)); | |
88f2a977 | 680 | req->pool = pool; |
c41f8cbd SS |
681 | return req; |
682 | } | |
683 | ||
684 | static struct zfcp_fsf_req *zfcp_fsf_alloc_qtcb(mempool_t *pool) | |
685 | { | |
686 | struct zfcp_fsf_req_qtcb *qtcb; | |
687 | ||
688 | if (likely(pool)) | |
689 | qtcb = mempool_alloc(pool, GFP_ATOMIC); | |
690 | else | |
691 | qtcb = kmem_cache_alloc(zfcp_data.fsf_req_qtcb_cache, | |
692 | GFP_ATOMIC); | |
693 | if (unlikely(!qtcb)) | |
694 | return NULL; | |
695 | ||
696 | memset(qtcb, 0, sizeof(*qtcb)); | |
697 | qtcb->fsf_req.qtcb = &qtcb->qtcb; | |
698 | qtcb->fsf_req.pool = pool; | |
699 | ||
700 | return &qtcb->fsf_req; | |
701 | } | |
702 | ||
703 | static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter, | |
704 | u32 fsf_cmd, int req_flags, | |
705 | mempool_t *pool) | |
1da177e4 | 706 | { |
44cc76f2 | 707 | struct qdio_buffer_element *sbale; |
1da177e4 | 708 | |
c41f8cbd SS |
709 | struct zfcp_fsf_req *req; |
710 | struct zfcp_qdio_queue *req_q = &adapter->req_q; | |
951f746f | 711 | |
c41f8cbd SS |
712 | if (req_flags & ZFCP_REQ_NO_QTCB) |
713 | req = zfcp_fsf_alloc_noqtcb(pool); | |
714 | else | |
715 | req = zfcp_fsf_alloc_qtcb(pool); | |
1da177e4 | 716 | |
c41f8cbd SS |
717 | if (unlikely(!req)) |
718 | return ERR_PTR(-EIO); | |
1da177e4 | 719 | |
c41f8cbd SS |
720 | if (adapter->req_no == 0) |
721 | adapter->req_no++; | |
1da177e4 | 722 | |
c41f8cbd SS |
723 | INIT_LIST_HEAD(&req->list); |
724 | init_timer(&req->timer); | |
725 | init_waitqueue_head(&req->completion_wq); | |
1da177e4 | 726 | |
c41f8cbd SS |
727 | req->adapter = adapter; |
728 | req->fsf_command = fsf_cmd; | |
52bfb558 | 729 | req->req_id = adapter->req_no; |
c41f8cbd SS |
730 | req->sbal_number = 1; |
731 | req->sbal_first = req_q->first; | |
732 | req->sbal_last = req_q->first; | |
733 | req->sbale_curr = 1; | |
734 | ||
735 | sbale = zfcp_qdio_sbale_req(req); | |
736 | sbale[0].addr = (void *) req->req_id; | |
737 | sbale[0].flags |= SBAL_FLAGS0_COMMAND; | |
738 | ||
739 | if (likely(req->qtcb)) { | |
740 | req->qtcb->prefix.req_seq_no = req->adapter->fsf_req_seq_no; | |
741 | req->qtcb->prefix.req_id = req->req_id; | |
742 | req->qtcb->prefix.ulp_info = 26; | |
743 | req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command]; | |
744 | req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION; | |
745 | req->qtcb->header.req_handle = req->req_id; | |
746 | req->qtcb->header.fsf_command = req->fsf_command; | |
747 | req->seq_no = adapter->fsf_req_seq_no; | |
748 | req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; | |
749 | sbale[1].addr = (void *) req->qtcb; | |
750 | sbale[1].length = sizeof(struct fsf_qtcb); | |
751 | } | |
752 | ||
753 | if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) { | |
754 | zfcp_fsf_req_free(req); | |
755 | return ERR_PTR(-EIO); | |
756 | } | |
951f746f | 757 | |
c41f8cbd SS |
758 | if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP)) |
759 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; | |
1da177e4 | 760 | |
c41f8cbd | 761 | return req; |
1da177e4 LT |
762 | } |
763 | ||
c41f8cbd SS |
764 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) |
765 | { | |
766 | struct zfcp_adapter *adapter = req->adapter; | |
45316a86 | 767 | unsigned long flags; |
c41f8cbd SS |
768 | int idx; |
769 | ||
770 | /* put allocated FSF request into hash table */ | |
45316a86 | 771 | spin_lock_irqsave(&adapter->req_list_lock, flags); |
c41f8cbd SS |
772 | idx = zfcp_reqlist_hash(req->req_id); |
773 | list_add_tail(&req->list, &adapter->req_list[idx]); | |
45316a86 | 774 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); |
c41f8cbd | 775 | |
3765138a | 776 | req->qdio_outb_usage = atomic_read(&adapter->req_q.count); |
c41f8cbd SS |
777 | req->issued = get_clock(); |
778 | if (zfcp_qdio_send(req)) { | |
c41f8cbd | 779 | del_timer(&req->timer); |
3765138a CS |
780 | spin_lock_irqsave(&adapter->req_list_lock, flags); |
781 | /* lookup request again, list might have changed */ | |
782 | if (zfcp_reqlist_find_safe(adapter, req)) | |
783 | zfcp_reqlist_remove(adapter, req); | |
784 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); | |
5ffd51a5 | 785 | zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1", req); |
c41f8cbd SS |
786 | return -EIO; |
787 | } | |
788 | ||
789 | /* Don't increase for unsolicited status */ | |
790 | if (req->qtcb) | |
791 | adapter->fsf_req_seq_no++; | |
52bfb558 | 792 | adapter->req_no++; |
c41f8cbd SS |
793 | |
794 | return 0; | |
795 | } | |
796 | ||
797 | /** | |
798 | * zfcp_fsf_status_read - send status read request | |
799 | * @adapter: pointer to struct zfcp_adapter | |
800 | * @req_flags: request flags | |
801 | * Returns: 0 on success, ERROR otherwise | |
1da177e4 | 802 | */ |
c41f8cbd | 803 | int zfcp_fsf_status_read(struct zfcp_adapter *adapter) |
1da177e4 | 804 | { |
c41f8cbd SS |
805 | struct zfcp_fsf_req *req; |
806 | struct fsf_status_read_buffer *sr_buf; | |
44cc76f2 | 807 | struct qdio_buffer_element *sbale; |
c41f8cbd | 808 | int retval = -EIO; |
1da177e4 | 809 | |
0406289e | 810 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
811 | if (zfcp_fsf_req_sbal_get(adapter)) |
812 | goto out; | |
813 | ||
814 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS, | |
815 | ZFCP_REQ_NO_QTCB, | |
816 | adapter->pool.fsf_req_status_read); | |
025270f0 | 817 | if (IS_ERR(req)) { |
c41f8cbd SS |
818 | retval = PTR_ERR(req); |
819 | goto out; | |
1da177e4 LT |
820 | } |
821 | ||
c41f8cbd SS |
822 | sbale = zfcp_qdio_sbale_req(req); |
823 | sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS; | |
824 | sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY; | |
825 | req->sbale_curr = 2; | |
826 | ||
827 | sr_buf = mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC); | |
828 | if (!sr_buf) { | |
829 | retval = -ENOMEM; | |
830 | goto failed_buf; | |
831 | } | |
832 | memset(sr_buf, 0, sizeof(*sr_buf)); | |
833 | req->data = sr_buf; | |
834 | sbale = zfcp_qdio_sbale_curr(req); | |
835 | sbale->addr = (void *) sr_buf; | |
836 | sbale->length = sizeof(*sr_buf); | |
059c97d0 | 837 | |
c41f8cbd SS |
838 | retval = zfcp_fsf_req_send(req); |
839 | if (retval) | |
840 | goto failed_req_send; | |
1da177e4 | 841 | |
c41f8cbd SS |
842 | goto out; |
843 | ||
844 | failed_req_send: | |
845 | mempool_free(sr_buf, adapter->pool.data_status_read); | |
846 | failed_buf: | |
847 | zfcp_fsf_req_free(req); | |
848 | zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL); | |
849 | out: | |
0406289e | 850 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
851 | return retval; |
852 | } | |
853 | ||
854 | static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req) | |
855 | { | |
856 | struct zfcp_unit *unit = req->data; | |
857 | union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual; | |
858 | ||
859 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
860 | return; | |
861 | ||
862 | switch (req->qtcb->header.fsf_status) { | |
1da177e4 | 863 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd | 864 | if (fsq->word[0] == fsq->word[1]) { |
5ffd51a5 SS |
865 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, |
866 | "fsafch1", req); | |
c41f8cbd | 867 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
868 | } |
869 | break; | |
1da177e4 | 870 | case FSF_LUN_HANDLE_NOT_VALID: |
c41f8cbd | 871 | if (fsq->word[0] == fsq->word[1]) { |
5ffd51a5 | 872 | zfcp_erp_port_reopen(unit->port, 0, "fsafch2", req); |
c41f8cbd | 873 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
874 | } |
875 | break; | |
1da177e4 | 876 | case FSF_FCP_COMMAND_DOES_NOT_EXIST: |
c41f8cbd | 877 | req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED; |
1da177e4 | 878 | break; |
1da177e4 | 879 | case FSF_PORT_BOXED: |
5ffd51a5 | 880 | zfcp_erp_port_boxed(unit->port, "fsafch3", req); |
c41f8cbd SS |
881 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
882 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 883 | break; |
1da177e4 | 884 | case FSF_LUN_BOXED: |
5ffd51a5 | 885 | zfcp_erp_unit_boxed(unit, "fsafch4", req); |
c41f8cbd SS |
886 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
887 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 888 | break; |
1da177e4 | 889 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 890 | switch (fsq->word[0]) { |
1da177e4 | 891 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
65a8d4e1 | 892 | zfcp_test_link(unit->port); |
1da177e4 | 893 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 894 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 895 | break; |
1da177e4 LT |
896 | } |
897 | break; | |
1da177e4 | 898 | case FSF_GOOD: |
c41f8cbd | 899 | req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED; |
1da177e4 | 900 | break; |
1da177e4 | 901 | } |
1da177e4 LT |
902 | } |
903 | ||
904 | /** | |
c41f8cbd SS |
905 | * zfcp_fsf_abort_fcp_command - abort running SCSI command |
906 | * @old_req_id: unsigned long | |
c41f8cbd | 907 | * @unit: pointer to struct zfcp_unit |
c41f8cbd | 908 | * Returns: pointer to struct zfcp_fsf_req |
1da177e4 | 909 | */ |
1da177e4 | 910 | |
c41f8cbd | 911 | struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id, |
63caf367 | 912 | struct zfcp_unit *unit) |
1da177e4 | 913 | { |
44cc76f2 | 914 | struct qdio_buffer_element *sbale; |
c41f8cbd | 915 | struct zfcp_fsf_req *req = NULL; |
63caf367 | 916 | struct zfcp_adapter *adapter = unit->port->adapter; |
8a36e453 | 917 | |
92cab0d9 CS |
918 | spin_lock_bh(&adapter->req_q_lock); |
919 | if (zfcp_fsf_req_sbal_get(adapter)) | |
c41f8cbd SS |
920 | goto out; |
921 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND, | |
63caf367 | 922 | 0, adapter->pool.fsf_req_abort); |
633528c3 SS |
923 | if (IS_ERR(req)) { |
924 | req = NULL; | |
c41f8cbd | 925 | goto out; |
633528c3 | 926 | } |
2abbe866 | 927 | |
c41f8cbd SS |
928 | if (unlikely(!(atomic_read(&unit->status) & |
929 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
930 | goto out_error_free; | |
1da177e4 | 931 | |
c41f8cbd SS |
932 | sbale = zfcp_qdio_sbale_req(req); |
933 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
934 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 935 | |
c41f8cbd SS |
936 | req->data = unit; |
937 | req->handler = zfcp_fsf_abort_fcp_command_handler; | |
938 | req->qtcb->header.lun_handle = unit->handle; | |
939 | req->qtcb->header.port_handle = unit->port->handle; | |
940 | req->qtcb->bottom.support.req_handle = (u64) old_req_id; | |
941 | ||
942 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); | |
943 | if (!zfcp_fsf_req_send(req)) | |
944 | goto out; | |
945 | ||
946 | out_error_free: | |
947 | zfcp_fsf_req_free(req); | |
948 | req = NULL; | |
949 | out: | |
92cab0d9 | 950 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 951 | return req; |
1da177e4 LT |
952 | } |
953 | ||
c41f8cbd | 954 | static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) |
1da177e4 | 955 | { |
c41f8cbd SS |
956 | struct zfcp_adapter *adapter = req->adapter; |
957 | struct zfcp_send_ct *send_ct = req->data; | |
c41f8cbd | 958 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1da177e4 | 959 | |
c41f8cbd | 960 | send_ct->status = -EINVAL; |
1da177e4 | 961 | |
c41f8cbd | 962 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
963 | goto skip_fsfstatus; |
964 | ||
1da177e4 | 965 | switch (header->fsf_status) { |
1da177e4 | 966 | case FSF_GOOD: |
c41f8cbd SS |
967 | zfcp_san_dbf_event_ct_response(req); |
968 | send_ct->status = 0; | |
1da177e4 | 969 | break; |
1da177e4 | 970 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 971 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 972 | break; |
1da177e4 | 973 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
974 | switch (header->fsf_status_qual.word[0]){ |
975 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 976 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 977 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 978 | break; |
1da177e4 LT |
979 | } |
980 | break; | |
1da177e4 | 981 | case FSF_ACCESS_DENIED: |
1da177e4 | 982 | break; |
1da177e4 | 983 | case FSF_PORT_BOXED: |
c41f8cbd SS |
984 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
985 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 986 | break; |
c41f8cbd | 987 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 988 | zfcp_erp_adapter_reopen(adapter, 0, "fsscth1", req); |
c41f8cbd | 989 | case FSF_GENERIC_COMMAND_REJECTED: |
1da177e4 | 990 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 991 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 992 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 993 | case FSF_SBAL_MISMATCH: |
c41f8cbd | 994 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
995 | break; |
996 | } | |
997 | ||
998 | skip_fsfstatus: | |
c41f8cbd | 999 | if (send_ct->handler) |
1da177e4 | 1000 | send_ct->handler(send_ct->handler_data); |
c41f8cbd | 1001 | } |
1da177e4 | 1002 | |
39eb7e9a CS |
1003 | static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req, |
1004 | struct scatterlist *sg_req, | |
1005 | struct scatterlist *sg_resp, | |
1006 | int max_sbals) | |
c41f8cbd | 1007 | { |
39eb7e9a CS |
1008 | struct qdio_buffer_element *sbale = zfcp_qdio_sbale_req(req); |
1009 | u32 feat = req->adapter->adapter_features; | |
c41f8cbd SS |
1010 | int bytes; |
1011 | ||
39eb7e9a CS |
1012 | if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) { |
1013 | if (sg_req->length > PAGE_SIZE || sg_resp->length > PAGE_SIZE || | |
1014 | !sg_is_last(sg_req) || !sg_is_last(sg_resp)) | |
1015 | return -EOPNOTSUPP; | |
1016 | ||
1017 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ; | |
1018 | sbale[2].addr = sg_virt(sg_req); | |
1019 | sbale[2].length = sg_req->length; | |
1020 | sbale[3].addr = sg_virt(sg_resp); | |
1021 | sbale[3].length = sg_resp->length; | |
1022 | sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1023 | return 0; | |
1024 | } | |
1025 | ||
c41f8cbd SS |
1026 | bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, |
1027 | sg_req, max_sbals); | |
1028 | if (bytes <= 0) | |
1029 | return -ENOMEM; | |
1030 | req->qtcb->bottom.support.req_buf_length = bytes; | |
1031 | req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; | |
1032 | ||
1033 | bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, | |
1034 | sg_resp, max_sbals); | |
1035 | if (bytes <= 0) | |
1036 | return -ENOMEM; | |
1037 | req->qtcb->bottom.support.resp_buf_length = bytes; | |
1038 | ||
1039 | return 0; | |
1da177e4 LT |
1040 | } |
1041 | ||
1042 | /** | |
c41f8cbd SS |
1043 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) |
1044 | * @ct: pointer to struct zfcp_send_ct with data for request | |
1045 | * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req | |
1046 | * @erp_action: if non-null the Generic Service request sent within ERP | |
1da177e4 | 1047 | */ |
c41f8cbd SS |
1048 | int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, |
1049 | struct zfcp_erp_action *erp_action) | |
1da177e4 | 1050 | { |
5ab944f9 SS |
1051 | struct zfcp_wka_port *wka_port = ct->wka_port; |
1052 | struct zfcp_adapter *adapter = wka_port->adapter; | |
c41f8cbd SS |
1053 | struct zfcp_fsf_req *req; |
1054 | int ret = -EIO; | |
1da177e4 | 1055 | |
0406289e | 1056 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1057 | if (zfcp_fsf_req_sbal_get(adapter)) |
1058 | goto out; | |
1da177e4 | 1059 | |
c41f8cbd SS |
1060 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC, |
1061 | ZFCP_REQ_AUTO_CLEANUP, pool); | |
025270f0 | 1062 | if (IS_ERR(req)) { |
c41f8cbd SS |
1063 | ret = PTR_ERR(req); |
1064 | goto out; | |
3f0ca62a CS |
1065 | } |
1066 | ||
39eb7e9a CS |
1067 | ret = zfcp_fsf_setup_ct_els_sbals(req, ct->req, ct->resp, |
1068 | FSF_MAX_SBALS_PER_REQ); | |
553448f6 | 1069 | if (ret) |
1da177e4 | 1070 | goto failed_send; |
1da177e4 | 1071 | |
c41f8cbd | 1072 | req->handler = zfcp_fsf_send_ct_handler; |
5ab944f9 | 1073 | req->qtcb->header.port_handle = wka_port->handle; |
c41f8cbd SS |
1074 | req->qtcb->bottom.support.service_class = FSF_CLASS_3; |
1075 | req->qtcb->bottom.support.timeout = ct->timeout; | |
1076 | req->data = ct; | |
1077 | ||
1078 | zfcp_san_dbf_event_ct_request(req); | |
1079 | ||
1080 | if (erp_action) { | |
1081 | erp_action->fsf_req = req; | |
1082 | req->erp_action = erp_action; | |
287ac01a | 1083 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
1084 | } else |
1085 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1da177e4 | 1086 | |
c41f8cbd SS |
1087 | ret = zfcp_fsf_req_send(req); |
1088 | if (ret) | |
1089 | goto failed_send; | |
1da177e4 | 1090 | |
c41f8cbd | 1091 | goto out; |
1da177e4 | 1092 | |
c41f8cbd SS |
1093 | failed_send: |
1094 | zfcp_fsf_req_free(req); | |
1095 | if (erp_action) | |
1096 | erp_action->fsf_req = NULL; | |
1097 | out: | |
0406289e | 1098 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 1099 | return ret; |
1da177e4 LT |
1100 | } |
1101 | ||
c41f8cbd | 1102 | static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1103 | { |
c41f8cbd SS |
1104 | struct zfcp_send_els *send_els = req->data; |
1105 | struct zfcp_port *port = send_els->port; | |
1106 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1107 | |
c41f8cbd | 1108 | send_els->status = -EINVAL; |
1da177e4 | 1109 | |
c41f8cbd | 1110 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
1111 | goto skip_fsfstatus; |
1112 | ||
1113 | switch (header->fsf_status) { | |
1da177e4 | 1114 | case FSF_GOOD: |
c41f8cbd SS |
1115 | zfcp_san_dbf_event_els_response(req); |
1116 | send_els->status = 0; | |
1da177e4 | 1117 | break; |
1da177e4 | 1118 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 1119 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 1120 | break; |
1da177e4 | 1121 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1122 | switch (header->fsf_status_qual.word[0]){ |
1123 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
64b29a13 AH |
1124 | if (port && (send_els->ls_code != ZFCP_LS_ADISC)) |
1125 | zfcp_test_link(port); | |
c41f8cbd | 1126 | /*fall through */ |
1da177e4 | 1127 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1128 | case FSF_SQ_RETRY_IF_POSSIBLE: |
c41f8cbd | 1129 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1130 | break; |
1da177e4 LT |
1131 | } |
1132 | break; | |
1da177e4 | 1133 | case FSF_ELS_COMMAND_REJECTED: |
1da177e4 | 1134 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1135 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1136 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1137 | break; |
1da177e4 | 1138 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1139 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1140 | break; |
c41f8cbd SS |
1141 | case FSF_SBAL_MISMATCH: |
1142 | /* should never occure, avoided in zfcp_fsf_send_els */ | |
1143 | /* fall through */ | |
1da177e4 | 1144 | default: |
c41f8cbd | 1145 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1146 | break; |
1147 | } | |
1da177e4 | 1148 | skip_fsfstatus: |
aa551daf | 1149 | if (send_els->handler) |
1da177e4 | 1150 | send_els->handler(send_els->handler_data); |
c41f8cbd | 1151 | } |
1da177e4 | 1152 | |
c41f8cbd SS |
1153 | /** |
1154 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) | |
1155 | * @els: pointer to struct zfcp_send_els with data for the command | |
1156 | */ | |
1157 | int zfcp_fsf_send_els(struct zfcp_send_els *els) | |
1158 | { | |
1159 | struct zfcp_fsf_req *req; | |
1160 | struct zfcp_adapter *adapter = els->adapter; | |
1161 | struct fsf_qtcb_bottom_support *bottom; | |
1162 | int ret = -EIO; | |
1163 | ||
8fdf30d5 CS |
1164 | spin_lock_bh(&adapter->req_q_lock); |
1165 | if (zfcp_fsf_req_sbal_get(adapter)) | |
c41f8cbd SS |
1166 | goto out; |
1167 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS, | |
1168 | ZFCP_REQ_AUTO_CLEANUP, NULL); | |
025270f0 | 1169 | if (IS_ERR(req)) { |
c41f8cbd SS |
1170 | ret = PTR_ERR(req); |
1171 | goto out; | |
1172 | } | |
1173 | ||
39eb7e9a | 1174 | ret = zfcp_fsf_setup_ct_els_sbals(req, els->req, els->resp, 2); |
44cc76f2 | 1175 | |
c41f8cbd SS |
1176 | if (ret) |
1177 | goto failed_send; | |
1178 | ||
1179 | bottom = &req->qtcb->bottom.support; | |
1180 | req->handler = zfcp_fsf_send_els_handler; | |
1181 | bottom->d_id = els->d_id; | |
1182 | bottom->service_class = FSF_CLASS_3; | |
1183 | bottom->timeout = 2 * R_A_TOV; | |
1184 | req->data = els; | |
1185 | ||
1186 | zfcp_san_dbf_event_els_request(req); | |
1187 | ||
1188 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1189 | ret = zfcp_fsf_req_send(req); | |
1190 | if (ret) | |
1191 | goto failed_send; | |
1192 | ||
1193 | goto out; | |
1194 | ||
1195 | failed_send: | |
1196 | zfcp_fsf_req_free(req); | |
1197 | out: | |
8fdf30d5 | 1198 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 1199 | return ret; |
1da177e4 LT |
1200 | } |
1201 | ||
c41f8cbd | 1202 | int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1203 | { |
44cc76f2 | 1204 | struct qdio_buffer_element *sbale; |
c41f8cbd | 1205 | struct zfcp_fsf_req *req; |
52ef11a7 | 1206 | struct zfcp_adapter *adapter = erp_action->adapter; |
c41f8cbd SS |
1207 | int retval = -EIO; |
1208 | ||
0406289e | 1209 | spin_lock_bh(&adapter->req_q_lock); |
92cab0d9 | 1210 | if (zfcp_fsf_req_sbal_get(adapter)) |
c41f8cbd SS |
1211 | goto out; |
1212 | req = zfcp_fsf_req_create(adapter, | |
1213 | FSF_QTCB_EXCHANGE_CONFIG_DATA, | |
1214 | ZFCP_REQ_AUTO_CLEANUP, | |
1215 | adapter->pool.fsf_req_erp); | |
025270f0 | 1216 | if (IS_ERR(req)) { |
c41f8cbd SS |
1217 | retval = PTR_ERR(req); |
1218 | goto out; | |
1da177e4 LT |
1219 | } |
1220 | ||
c41f8cbd | 1221 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1222 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1223 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1224 | |
c41f8cbd | 1225 | req->qtcb->bottom.config.feature_selection = |
aef4a983 MS |
1226 | FSF_FEATURE_CFDC | |
1227 | FSF_FEATURE_LUN_SHARING | | |
9eb69aff | 1228 | FSF_FEATURE_NOTIFICATION_LOST | |
aef4a983 | 1229 | FSF_FEATURE_UPDATE_ALERT; |
c41f8cbd SS |
1230 | req->erp_action = erp_action; |
1231 | req->handler = zfcp_fsf_exchange_config_data_handler; | |
1232 | erp_action->fsf_req = req; | |
1da177e4 | 1233 | |
287ac01a | 1234 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1235 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1236 | if (retval) { |
c41f8cbd | 1237 | zfcp_fsf_req_free(req); |
1da177e4 | 1238 | erp_action->fsf_req = NULL; |
1da177e4 | 1239 | } |
c41f8cbd | 1240 | out: |
0406289e | 1241 | spin_unlock_bh(&adapter->req_q_lock); |
52ef11a7 SS |
1242 | return retval; |
1243 | } | |
1da177e4 | 1244 | |
c41f8cbd SS |
1245 | int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter, |
1246 | struct fsf_qtcb_bottom_config *data) | |
52ef11a7 | 1247 | { |
44cc76f2 | 1248 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1249 | struct zfcp_fsf_req *req = NULL; |
1250 | int retval = -EIO; | |
1251 | ||
0406289e | 1252 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1253 | if (zfcp_fsf_req_sbal_get(adapter)) |
1254 | goto out; | |
1255 | ||
1256 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA, | |
1257 | 0, NULL); | |
025270f0 | 1258 | if (IS_ERR(req)) { |
c41f8cbd SS |
1259 | retval = PTR_ERR(req); |
1260 | goto out; | |
52ef11a7 SS |
1261 | } |
1262 | ||
c41f8cbd | 1263 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1264 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1265 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
c41f8cbd | 1266 | req->handler = zfcp_fsf_exchange_config_data_handler; |
52ef11a7 | 1267 | |
c41f8cbd | 1268 | req->qtcb->bottom.config.feature_selection = |
52ef11a7 SS |
1269 | FSF_FEATURE_CFDC | |
1270 | FSF_FEATURE_LUN_SHARING | | |
1271 | FSF_FEATURE_NOTIFICATION_LOST | | |
1272 | FSF_FEATURE_UPDATE_ALERT; | |
1273 | ||
1274 | if (data) | |
c41f8cbd | 1275 | req->data = data; |
52ef11a7 | 1276 | |
c41f8cbd SS |
1277 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
1278 | retval = zfcp_fsf_req_send(req); | |
1279 | out: | |
0406289e | 1280 | spin_unlock_bh(&adapter->req_q_lock); |
553448f6 | 1281 | if (!retval) |
c41f8cbd SS |
1282 | wait_event(req->completion_wq, |
1283 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
52ef11a7 | 1284 | |
c41f8cbd | 1285 | zfcp_fsf_req_free(req); |
52ef11a7 | 1286 | |
1da177e4 LT |
1287 | return retval; |
1288 | } | |
1289 | ||
1da177e4 LT |
1290 | /** |
1291 | * zfcp_fsf_exchange_port_data - request information about local port | |
aef4a983 | 1292 | * @erp_action: ERP action for the adapter for which port data is requested |
c41f8cbd | 1293 | * Returns: 0 on success, error otherwise |
1da177e4 | 1294 | */ |
c41f8cbd | 1295 | int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1296 | { |
44cc76f2 | 1297 | struct qdio_buffer_element *sbale; |
c41f8cbd | 1298 | struct zfcp_fsf_req *req; |
52ef11a7 | 1299 | struct zfcp_adapter *adapter = erp_action->adapter; |
c41f8cbd | 1300 | int retval = -EIO; |
1da177e4 | 1301 | |
553448f6 | 1302 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1303 | return -EOPNOTSUPP; |
1da177e4 | 1304 | |
0406289e | 1305 | spin_lock_bh(&adapter->req_q_lock); |
92cab0d9 | 1306 | if (zfcp_fsf_req_sbal_get(adapter)) |
c41f8cbd SS |
1307 | goto out; |
1308 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, | |
1309 | ZFCP_REQ_AUTO_CLEANUP, | |
1310 | adapter->pool.fsf_req_erp); | |
025270f0 | 1311 | if (IS_ERR(req)) { |
c41f8cbd SS |
1312 | retval = PTR_ERR(req); |
1313 | goto out; | |
aef4a983 MS |
1314 | } |
1315 | ||
c41f8cbd | 1316 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1317 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1318 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1319 | |
c41f8cbd SS |
1320 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1321 | req->erp_action = erp_action; | |
1322 | erp_action->fsf_req = req; | |
52ef11a7 | 1323 | |
287ac01a | 1324 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1325 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1326 | if (retval) { |
c41f8cbd | 1327 | zfcp_fsf_req_free(req); |
52ef11a7 SS |
1328 | erp_action->fsf_req = NULL; |
1329 | } | |
c41f8cbd | 1330 | out: |
0406289e | 1331 | spin_unlock_bh(&adapter->req_q_lock); |
52ef11a7 SS |
1332 | return retval; |
1333 | } | |
1334 | ||
52ef11a7 SS |
1335 | /** |
1336 | * zfcp_fsf_exchange_port_data_sync - request information about local port | |
c41f8cbd SS |
1337 | * @adapter: pointer to struct zfcp_adapter |
1338 | * @data: pointer to struct fsf_qtcb_bottom_port | |
1339 | * Returns: 0 on success, error otherwise | |
52ef11a7 | 1340 | */ |
c41f8cbd SS |
1341 | int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, |
1342 | struct fsf_qtcb_bottom_port *data) | |
52ef11a7 | 1343 | { |
44cc76f2 | 1344 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1345 | struct zfcp_fsf_req *req = NULL; |
1346 | int retval = -EIO; | |
52ef11a7 | 1347 | |
553448f6 | 1348 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1349 | return -EOPNOTSUPP; |
52ef11a7 | 1350 | |
0406289e | 1351 | spin_lock_bh(&adapter->req_q_lock); |
92cab0d9 | 1352 | if (zfcp_fsf_req_sbal_get(adapter)) |
c41f8cbd SS |
1353 | goto out; |
1354 | ||
1355 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, 0, | |
1356 | NULL); | |
025270f0 | 1357 | if (IS_ERR(req)) { |
c41f8cbd SS |
1358 | retval = PTR_ERR(req); |
1359 | goto out; | |
1da177e4 LT |
1360 | } |
1361 | ||
52ef11a7 | 1362 | if (data) |
c41f8cbd | 1363 | req->data = data; |
52ef11a7 | 1364 | |
c41f8cbd | 1365 | sbale = zfcp_qdio_sbale_req(req); |
52ef11a7 SS |
1366 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1367 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1368 | ||
c41f8cbd SS |
1369 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1370 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1371 | retval = zfcp_fsf_req_send(req); | |
1372 | out: | |
0406289e | 1373 | spin_unlock_bh(&adapter->req_q_lock); |
553448f6 | 1374 | if (!retval) |
c41f8cbd SS |
1375 | wait_event(req->completion_wq, |
1376 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
1377 | zfcp_fsf_req_free(req); | |
1da177e4 | 1378 | |
1da177e4 LT |
1379 | return retval; |
1380 | } | |
1381 | ||
c41f8cbd | 1382 | static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1383 | { |
c41f8cbd SS |
1384 | struct zfcp_port *port = req->data; |
1385 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1386 | struct fsf_plogi *plogi; |
1da177e4 | 1387 | |
c41f8cbd | 1388 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1389 | return; |
1da177e4 | 1390 | |
1da177e4 | 1391 | switch (header->fsf_status) { |
1da177e4 | 1392 | case FSF_PORT_ALREADY_OPEN: |
1da177e4 | 1393 | break; |
1da177e4 | 1394 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1395 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1396 | break; |
1da177e4 | 1397 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: |
c41f8cbd | 1398 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 1399 | "Not enough FCP adapter resources to open " |
7ba58c9c SS |
1400 | "remote port 0x%016Lx\n", |
1401 | (unsigned long long)port->wwpn); | |
5ffd51a5 | 1402 | zfcp_erp_port_failed(port, "fsoph_1", req); |
c41f8cbd | 1403 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1404 | break; |
1da177e4 | 1405 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1406 | switch (header->fsf_status_qual.word[0]) { |
1407 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1408 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1409 | case FSF_SQ_NO_RETRY_POSSIBLE: |
c41f8cbd | 1410 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1411 | break; |
1412 | } | |
1413 | break; | |
1da177e4 | 1414 | case FSF_GOOD: |
1da177e4 | 1415 | port->handle = header->port_handle; |
1da177e4 LT |
1416 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN | |
1417 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
d736a27b AH |
1418 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
1419 | ZFCP_STATUS_COMMON_ACCESS_BOXED, | |
1420 | &port->status); | |
1da177e4 LT |
1421 | /* check whether D_ID has changed during open */ |
1422 | /* | |
1423 | * FIXME: This check is not airtight, as the FCP channel does | |
1424 | * not monitor closures of target port connections caused on | |
1425 | * the remote side. Thus, they might miss out on invalidating | |
1426 | * locally cached WWPNs (and other N_Port parameters) of gone | |
1427 | * target ports. So, our heroic attempt to make things safe | |
1428 | * could be undermined by 'open port' response data tagged with | |
1429 | * obsolete WWPNs. Another reason to monitor potential | |
1430 | * connection closures ourself at least (by interpreting | |
1431 | * incoming ELS' and unsolicited status). It just crosses my | |
1432 | * mind that one should be able to cross-check by means of | |
1433 | * another GID_PN straight after a port has been opened. | |
1434 | * Alternately, an ADISC/PDISC ELS should suffice, as well. | |
1435 | */ | |
c41f8cbd | 1436 | plogi = (struct fsf_plogi *) req->qtcb->bottom.support.els; |
39eb7e9a CS |
1437 | if (req->qtcb->bottom.support.els1_length >= |
1438 | FSF_PLOGI_MIN_LEN) { | |
c41f8cbd | 1439 | if (plogi->serv_param.wwpn != port->wwpn) |
b98478d7 | 1440 | port->d_id = 0; |
c41f8cbd SS |
1441 | else { |
1442 | port->wwnn = plogi->serv_param.wwnn; | |
1443 | zfcp_fc_plogi_evaluate(port, plogi); | |
1da177e4 LT |
1444 | } |
1445 | } | |
1446 | break; | |
1da177e4 | 1447 | case FSF_UNKNOWN_OP_SUBTYPE: |
c41f8cbd | 1448 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1449 | break; |
1450 | } | |
1da177e4 LT |
1451 | } |
1452 | ||
c41f8cbd SS |
1453 | /** |
1454 | * zfcp_fsf_open_port - create and send open port request | |
1455 | * @erp_action: pointer to struct zfcp_erp_action | |
1456 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1457 | */ |
c41f8cbd | 1458 | int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1459 | { |
44cc76f2 | 1460 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1461 | struct zfcp_adapter *adapter = erp_action->adapter; |
1462 | struct zfcp_fsf_req *req; | |
1463 | int retval = -EIO; | |
1464 | ||
0406289e | 1465 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1466 | if (zfcp_fsf_req_sbal_get(adapter)) |
1467 | goto out; | |
1468 | ||
1469 | req = zfcp_fsf_req_create(adapter, | |
1470 | FSF_QTCB_OPEN_PORT_WITH_DID, | |
1471 | ZFCP_REQ_AUTO_CLEANUP, | |
1472 | adapter->pool.fsf_req_erp); | |
025270f0 | 1473 | if (IS_ERR(req)) { |
c41f8cbd | 1474 | retval = PTR_ERR(req); |
1da177e4 | 1475 | goto out; |
c41f8cbd | 1476 | } |
1da177e4 | 1477 | |
c41f8cbd | 1478 | sbale = zfcp_qdio_sbale_req(req); |
1da177e4 LT |
1479 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1480 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1481 | ||
c41f8cbd SS |
1482 | req->handler = zfcp_fsf_open_port_handler; |
1483 | req->qtcb->bottom.support.d_id = erp_action->port->d_id; | |
1484 | req->data = erp_action->port; | |
1485 | req->erp_action = erp_action; | |
1486 | erp_action->fsf_req = req; | |
c41f8cbd | 1487 | |
287ac01a | 1488 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1489 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1490 | if (retval) { |
c41f8cbd | 1491 | zfcp_fsf_req_free(req); |
1da177e4 | 1492 | erp_action->fsf_req = NULL; |
1da177e4 | 1493 | } |
c41f8cbd | 1494 | out: |
0406289e | 1495 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1496 | return retval; |
1497 | } | |
1498 | ||
c41f8cbd | 1499 | static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1500 | { |
c41f8cbd | 1501 | struct zfcp_port *port = req->data; |
1da177e4 | 1502 | |
c41f8cbd | 1503 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1504 | return; |
1da177e4 | 1505 | |
c41f8cbd | 1506 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1507 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 1508 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1", req); |
c41f8cbd | 1509 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1510 | break; |
1da177e4 | 1511 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 | 1512 | break; |
1da177e4 | 1513 | case FSF_GOOD: |
5ffd51a5 | 1514 | zfcp_erp_modify_port_status(port, "fscph_2", req, |
1da177e4 LT |
1515 | ZFCP_STATUS_COMMON_OPEN, |
1516 | ZFCP_CLEAR); | |
1da177e4 | 1517 | break; |
1da177e4 | 1518 | } |
1da177e4 LT |
1519 | } |
1520 | ||
c41f8cbd SS |
1521 | /** |
1522 | * zfcp_fsf_close_port - create and send close port request | |
1523 | * @erp_action: pointer to struct zfcp_erp_action | |
1524 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1525 | */ |
c41f8cbd | 1526 | int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1527 | { |
44cc76f2 | 1528 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1529 | struct zfcp_adapter *adapter = erp_action->adapter; |
1530 | struct zfcp_fsf_req *req; | |
1531 | int retval = -EIO; | |
1532 | ||
0406289e | 1533 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
1534 | if (zfcp_fsf_req_sbal_get(adapter)) |
1535 | goto out; | |
1536 | ||
1537 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT, | |
1538 | ZFCP_REQ_AUTO_CLEANUP, | |
1539 | adapter->pool.fsf_req_erp); | |
025270f0 | 1540 | if (IS_ERR(req)) { |
c41f8cbd | 1541 | retval = PTR_ERR(req); |
1da177e4 | 1542 | goto out; |
c41f8cbd | 1543 | } |
1da177e4 | 1544 | |
c41f8cbd | 1545 | sbale = zfcp_qdio_sbale_req(req); |
1da177e4 LT |
1546 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1547 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1548 | ||
c41f8cbd SS |
1549 | req->handler = zfcp_fsf_close_port_handler; |
1550 | req->data = erp_action->port; | |
1551 | req->erp_action = erp_action; | |
1552 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1553 | erp_action->fsf_req = req; | |
c41f8cbd | 1554 | |
287ac01a | 1555 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1556 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1557 | if (retval) { |
c41f8cbd | 1558 | zfcp_fsf_req_free(req); |
1da177e4 | 1559 | erp_action->fsf_req = NULL; |
1da177e4 | 1560 | } |
c41f8cbd | 1561 | out: |
0406289e | 1562 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1563 | return retval; |
1564 | } | |
1565 | ||
5ab944f9 SS |
1566 | static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req) |
1567 | { | |
1568 | struct zfcp_wka_port *wka_port = req->data; | |
1569 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1570 | ||
1571 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
1572 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1573 | goto out; | |
1574 | } | |
1575 | ||
1576 | switch (header->fsf_status) { | |
1577 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: | |
1578 | dev_warn(&req->adapter->ccw_device->dev, | |
1579 | "Opening WKA port 0x%x failed\n", wka_port->d_id); | |
1580 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
1581 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1582 | case FSF_ACCESS_DENIED: | |
1583 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1584 | break; | |
1585 | case FSF_PORT_ALREADY_OPEN: | |
1c1cba17 | 1586 | break; |
5ab944f9 SS |
1587 | case FSF_GOOD: |
1588 | wka_port->handle = header->port_handle; | |
1589 | wka_port->status = ZFCP_WKA_PORT_ONLINE; | |
1590 | } | |
1591 | out: | |
1592 | wake_up(&wka_port->completion_wq); | |
1593 | } | |
1594 | ||
1595 | /** | |
1596 | * zfcp_fsf_open_wka_port - create and send open wka-port request | |
1597 | * @wka_port: pointer to struct zfcp_wka_port | |
1598 | * Returns: 0 on success, error otherwise | |
1599 | */ | |
1600 | int zfcp_fsf_open_wka_port(struct zfcp_wka_port *wka_port) | |
1601 | { | |
1602 | struct qdio_buffer_element *sbale; | |
1603 | struct zfcp_adapter *adapter = wka_port->adapter; | |
1604 | struct zfcp_fsf_req *req; | |
1605 | int retval = -EIO; | |
1606 | ||
0406289e | 1607 | spin_lock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1608 | if (zfcp_fsf_req_sbal_get(adapter)) |
1609 | goto out; | |
1610 | ||
1611 | req = zfcp_fsf_req_create(adapter, | |
1612 | FSF_QTCB_OPEN_PORT_WITH_DID, | |
1613 | ZFCP_REQ_AUTO_CLEANUP, | |
1614 | adapter->pool.fsf_req_erp); | |
1615 | if (unlikely(IS_ERR(req))) { | |
1616 | retval = PTR_ERR(req); | |
1617 | goto out; | |
1618 | } | |
1619 | ||
1620 | sbale = zfcp_qdio_sbale_req(req); | |
1621 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1622 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1623 | ||
1624 | req->handler = zfcp_fsf_open_wka_port_handler; | |
1625 | req->qtcb->bottom.support.d_id = wka_port->d_id; | |
1626 | req->data = wka_port; | |
1627 | ||
1628 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1629 | retval = zfcp_fsf_req_send(req); | |
1630 | if (retval) | |
1631 | zfcp_fsf_req_free(req); | |
1632 | out: | |
0406289e | 1633 | spin_unlock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1634 | return retval; |
1635 | } | |
1636 | ||
1637 | static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req) | |
1638 | { | |
1639 | struct zfcp_wka_port *wka_port = req->data; | |
1640 | ||
1641 | if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) { | |
1642 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
5ffd51a5 | 1643 | zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1", req); |
5ab944f9 SS |
1644 | } |
1645 | ||
1646 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1647 | wake_up(&wka_port->completion_wq); | |
1648 | } | |
1649 | ||
1650 | /** | |
1651 | * zfcp_fsf_close_wka_port - create and send close wka port request | |
1652 | * @erp_action: pointer to struct zfcp_erp_action | |
1653 | * Returns: 0 on success, error otherwise | |
1654 | */ | |
1655 | int zfcp_fsf_close_wka_port(struct zfcp_wka_port *wka_port) | |
1656 | { | |
1657 | struct qdio_buffer_element *sbale; | |
1658 | struct zfcp_adapter *adapter = wka_port->adapter; | |
1659 | struct zfcp_fsf_req *req; | |
1660 | int retval = -EIO; | |
1661 | ||
0406289e | 1662 | spin_lock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1663 | if (zfcp_fsf_req_sbal_get(adapter)) |
1664 | goto out; | |
1665 | ||
1666 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT, | |
1667 | ZFCP_REQ_AUTO_CLEANUP, | |
1668 | adapter->pool.fsf_req_erp); | |
1669 | if (unlikely(IS_ERR(req))) { | |
1670 | retval = PTR_ERR(req); | |
1671 | goto out; | |
1672 | } | |
1673 | ||
1674 | sbale = zfcp_qdio_sbale_req(req); | |
1675 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1676 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1677 | ||
1678 | req->handler = zfcp_fsf_close_wka_port_handler; | |
1679 | req->data = wka_port; | |
1680 | req->qtcb->header.port_handle = wka_port->handle; | |
1681 | ||
1682 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1683 | retval = zfcp_fsf_req_send(req); | |
1684 | if (retval) | |
1685 | zfcp_fsf_req_free(req); | |
1686 | out: | |
0406289e | 1687 | spin_unlock_bh(&adapter->req_q_lock); |
5ab944f9 SS |
1688 | return retval; |
1689 | } | |
1690 | ||
c41f8cbd | 1691 | static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1692 | { |
c41f8cbd SS |
1693 | struct zfcp_port *port = req->data; |
1694 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1695 | struct zfcp_unit *unit; |
1da177e4 | 1696 | |
c41f8cbd | 1697 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
a5b11dda | 1698 | return; |
1da177e4 | 1699 | |
1da177e4 | 1700 | switch (header->fsf_status) { |
1da177e4 | 1701 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 1702 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1", req); |
c41f8cbd | 1703 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1704 | break; |
1da177e4 | 1705 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1706 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1707 | break; |
1da177e4 | 1708 | case FSF_PORT_BOXED: |
5ffd51a5 | 1709 | zfcp_erp_port_boxed(port, "fscpph2", req); |
c41f8cbd SS |
1710 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
1711 | ZFCP_STATUS_FSFREQ_RETRY; | |
5c815d15 CS |
1712 | /* can't use generic zfcp_erp_modify_port_status because |
1713 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */ | |
1714 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
1715 | list_for_each_entry(unit, &port->unit_list_head, list) | |
1716 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, | |
1717 | &unit->status); | |
1da177e4 | 1718 | break; |
1da177e4 | 1719 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1720 | switch (header->fsf_status_qual.word[0]) { |
1721 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
c41f8cbd | 1722 | /* fall through */ |
1da177e4 | 1723 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1724 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1725 | break; |
1da177e4 LT |
1726 | } |
1727 | break; | |
1da177e4 | 1728 | case FSF_GOOD: |
1da177e4 LT |
1729 | /* can't use generic zfcp_erp_modify_port_status because |
1730 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port | |
1731 | */ | |
1732 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
1733 | list_for_each_entry(unit, &port->unit_list_head, list) | |
c41f8cbd SS |
1734 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, |
1735 | &unit->status); | |
1da177e4 | 1736 | break; |
1da177e4 | 1737 | } |
1da177e4 LT |
1738 | } |
1739 | ||
c41f8cbd SS |
1740 | /** |
1741 | * zfcp_fsf_close_physical_port - close physical port | |
1742 | * @erp_action: pointer to struct zfcp_erp_action | |
1743 | * Returns: 0 on success | |
1da177e4 | 1744 | */ |
c41f8cbd | 1745 | int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1746 | { |
44cc76f2 | 1747 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1748 | struct zfcp_adapter *adapter = erp_action->adapter; |
1749 | struct zfcp_fsf_req *req; | |
1750 | int retval = -EIO; | |
1751 | ||
0406289e | 1752 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 1753 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 1754 | goto out; |
1da177e4 | 1755 | |
c41f8cbd SS |
1756 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PHYSICAL_PORT, |
1757 | ZFCP_REQ_AUTO_CLEANUP, | |
1758 | adapter->pool.fsf_req_erp); | |
025270f0 | 1759 | if (IS_ERR(req)) { |
c41f8cbd SS |
1760 | retval = PTR_ERR(req); |
1761 | goto out; | |
1762 | } | |
1da177e4 | 1763 | |
c41f8cbd SS |
1764 | sbale = zfcp_qdio_sbale_req(req); |
1765 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1766 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1767 | |
c41f8cbd SS |
1768 | req->data = erp_action->port; |
1769 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1770 | req->erp_action = erp_action; | |
1771 | req->handler = zfcp_fsf_close_physical_port_handler; | |
1772 | erp_action->fsf_req = req; | |
c41f8cbd | 1773 | |
287ac01a | 1774 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1775 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1776 | if (retval) { |
c41f8cbd | 1777 | zfcp_fsf_req_free(req); |
1da177e4 | 1778 | erp_action->fsf_req = NULL; |
1da177e4 | 1779 | } |
c41f8cbd | 1780 | out: |
0406289e | 1781 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1782 | return retval; |
1783 | } | |
1784 | ||
c41f8cbd | 1785 | static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1786 | { |
c41f8cbd SS |
1787 | struct zfcp_adapter *adapter = req->adapter; |
1788 | struct zfcp_unit *unit = req->data; | |
1789 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1790 | struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support; | |
1791 | struct fsf_queue_designator *queue_designator = | |
1792 | &header->fsf_status_qual.fsf_queue_designator; | |
aef4a983 | 1793 | int exclusive, readwrite; |
1da177e4 | 1794 | |
c41f8cbd | 1795 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1796 | return; |
1da177e4 | 1797 | |
1da177e4 | 1798 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
b64ddf96 | 1799 | ZFCP_STATUS_COMMON_ACCESS_BOXED | |
1da177e4 LT |
1800 | ZFCP_STATUS_UNIT_SHARED | |
1801 | ZFCP_STATUS_UNIT_READONLY, | |
1802 | &unit->status); | |
1803 | ||
1da177e4 LT |
1804 | switch (header->fsf_status) { |
1805 | ||
1806 | case FSF_PORT_HANDLE_NOT_VALID: | |
5ffd51a5 | 1807 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fsouh_1", req); |
c41f8cbd | 1808 | /* fall through */ |
1da177e4 | 1809 | case FSF_LUN_ALREADY_OPEN: |
1da177e4 | 1810 | break; |
1da177e4 | 1811 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1812 | zfcp_fsf_access_denied_unit(req, unit); |
1da177e4 | 1813 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
553448f6 | 1814 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); |
1da177e4 | 1815 | break; |
1da177e4 | 1816 | case FSF_PORT_BOXED: |
5ffd51a5 | 1817 | zfcp_erp_port_boxed(unit->port, "fsouh_2", req); |
c41f8cbd SS |
1818 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
1819 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 1820 | break; |
1da177e4 | 1821 | case FSF_LUN_SHARING_VIOLATION: |
c41f8cbd | 1822 | if (header->fsf_status_qual.word[0]) |
553448f6 | 1823 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1824 | "LUN 0x%Lx on port 0x%Lx is already in " |
1825 | "use by CSS%d, MIF Image ID %x\n", | |
7ba58c9c SS |
1826 | (unsigned long long)unit->fcp_lun, |
1827 | (unsigned long long)unit->port->wwpn, | |
ff3b24fa CS |
1828 | queue_designator->cssid, |
1829 | queue_designator->hla); | |
c41f8cbd | 1830 | else |
553448f6 CS |
1831 | zfcp_act_eval_err(adapter, |
1832 | header->fsf_status_qual.word[2]); | |
5ffd51a5 | 1833 | zfcp_erp_unit_access_denied(unit, "fsouh_3", req); |
1da177e4 LT |
1834 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
1835 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); | |
c41f8cbd | 1836 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1837 | break; |
1da177e4 | 1838 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: |
c41f8cbd | 1839 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1840 | "No handle is available for LUN " |
1841 | "0x%016Lx on port 0x%016Lx\n", | |
7ba58c9c SS |
1842 | (unsigned long long)unit->fcp_lun, |
1843 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 1844 | zfcp_erp_unit_failed(unit, "fsouh_4", req); |
c41f8cbd SS |
1845 | /* fall through */ |
1846 | case FSF_INVALID_COMMAND_OPTION: | |
1847 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1848 | break; |
1da177e4 | 1849 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1850 | switch (header->fsf_status_qual.word[0]) { |
1851 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
65a8d4e1 | 1852 | zfcp_test_link(unit->port); |
c41f8cbd | 1853 | /* fall through */ |
1da177e4 | 1854 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1855 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1856 | break; |
1da177e4 LT |
1857 | } |
1858 | break; | |
1859 | ||
1da177e4 | 1860 | case FSF_GOOD: |
1da177e4 | 1861 | unit->handle = header->lun_handle; |
1da177e4 | 1862 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
aef4a983 MS |
1863 | |
1864 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) && | |
1865 | (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) && | |
1866 | (adapter->ccw_device->id.dev_model != ZFCP_DEVICE_MODEL_PRIV)) { | |
1867 | exclusive = (bottom->lun_access_info & | |
1868 | FSF_UNIT_ACCESS_EXCLUSIVE); | |
1869 | readwrite = (bottom->lun_access_info & | |
1870 | FSF_UNIT_ACCESS_OUTBOUND_TRANSFER); | |
1871 | ||
1da177e4 LT |
1872 | if (!exclusive) |
1873 | atomic_set_mask(ZFCP_STATUS_UNIT_SHARED, | |
1874 | &unit->status); | |
1875 | ||
1876 | if (!readwrite) { | |
1877 | atomic_set_mask(ZFCP_STATUS_UNIT_READONLY, | |
1878 | &unit->status); | |
c41f8cbd | 1879 | dev_info(&adapter->ccw_device->dev, |
ff3b24fa CS |
1880 | "SCSI device at LUN 0x%016Lx on port " |
1881 | "0x%016Lx opened read-only\n", | |
7ba58c9c SS |
1882 | (unsigned long long)unit->fcp_lun, |
1883 | (unsigned long long)unit->port->wwpn); | |
1da177e4 LT |
1884 | } |
1885 | ||
1886 | if (exclusive && !readwrite) { | |
c41f8cbd | 1887 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
1888 | "Exclusive read-only access not " |
1889 | "supported (unit 0x%016Lx, " | |
1890 | "port 0x%016Lx)\n", | |
7ba58c9c SS |
1891 | (unsigned long long)unit->fcp_lun, |
1892 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 1893 | zfcp_erp_unit_failed(unit, "fsouh_5", req); |
c41f8cbd | 1894 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
5ffd51a5 | 1895 | zfcp_erp_unit_shutdown(unit, 0, "fsouh_6", req); |
1da177e4 | 1896 | } else if (!exclusive && readwrite) { |
c41f8cbd | 1897 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
1898 | "Shared read-write access not " |
1899 | "supported (unit 0x%016Lx, port " | |
27c3f0a6 | 1900 | "0x%016Lx)\n", |
7ba58c9c SS |
1901 | (unsigned long long)unit->fcp_lun, |
1902 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 1903 | zfcp_erp_unit_failed(unit, "fsouh_7", req); |
c41f8cbd | 1904 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
5ffd51a5 | 1905 | zfcp_erp_unit_shutdown(unit, 0, "fsouh_8", req); |
1da177e4 LT |
1906 | } |
1907 | } | |
1da177e4 | 1908 | break; |
1da177e4 | 1909 | } |
1da177e4 LT |
1910 | } |
1911 | ||
c41f8cbd SS |
1912 | /** |
1913 | * zfcp_fsf_open_unit - open unit | |
1914 | * @erp_action: pointer to struct zfcp_erp_action | |
1915 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1916 | */ |
c41f8cbd | 1917 | int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) |
1da177e4 | 1918 | { |
44cc76f2 | 1919 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1920 | struct zfcp_adapter *adapter = erp_action->adapter; |
1921 | struct zfcp_fsf_req *req; | |
1922 | int retval = -EIO; | |
1923 | ||
0406289e | 1924 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 1925 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 1926 | goto out; |
1da177e4 | 1927 | |
c41f8cbd SS |
1928 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_OPEN_LUN, |
1929 | ZFCP_REQ_AUTO_CLEANUP, | |
1930 | adapter->pool.fsf_req_erp); | |
025270f0 | 1931 | if (IS_ERR(req)) { |
c41f8cbd SS |
1932 | retval = PTR_ERR(req); |
1933 | goto out; | |
1934 | } | |
1935 | ||
1936 | sbale = zfcp_qdio_sbale_req(req); | |
1da177e4 LT |
1937 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1938 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1939 | ||
c41f8cbd SS |
1940 | req->qtcb->header.port_handle = erp_action->port->handle; |
1941 | req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun; | |
1942 | req->handler = zfcp_fsf_open_unit_handler; | |
1943 | req->data = erp_action->unit; | |
1944 | req->erp_action = erp_action; | |
1945 | erp_action->fsf_req = req; | |
1946 | ||
1947 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) | |
1948 | req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING; | |
1949 | ||
287ac01a | 1950 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1951 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1952 | if (retval) { |
c41f8cbd | 1953 | zfcp_fsf_req_free(req); |
1da177e4 | 1954 | erp_action->fsf_req = NULL; |
1da177e4 | 1955 | } |
c41f8cbd | 1956 | out: |
0406289e | 1957 | spin_unlock_bh(&adapter->req_q_lock); |
1da177e4 LT |
1958 | return retval; |
1959 | } | |
1960 | ||
c41f8cbd | 1961 | static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1962 | { |
c41f8cbd | 1963 | struct zfcp_unit *unit = req->data; |
1da177e4 | 1964 | |
c41f8cbd | 1965 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1966 | return; |
1da177e4 | 1967 | |
c41f8cbd | 1968 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1969 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 1970 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fscuh_1", req); |
c41f8cbd | 1971 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1972 | break; |
1da177e4 | 1973 | case FSF_LUN_HANDLE_NOT_VALID: |
5ffd51a5 | 1974 | zfcp_erp_port_reopen(unit->port, 0, "fscuh_2", req); |
c41f8cbd | 1975 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1976 | break; |
1da177e4 | 1977 | case FSF_PORT_BOXED: |
5ffd51a5 | 1978 | zfcp_erp_port_boxed(unit->port, "fscuh_3", req); |
c41f8cbd SS |
1979 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
1980 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 1981 | break; |
1da177e4 | 1982 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 1983 | switch (req->qtcb->header.fsf_status_qual.word[0]) { |
1da177e4 | 1984 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
65a8d4e1 | 1985 | zfcp_test_link(unit->port); |
c41f8cbd | 1986 | /* fall through */ |
1da177e4 | 1987 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1988 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1989 | break; |
1990 | } | |
1991 | break; | |
1da177e4 | 1992 | case FSF_GOOD: |
1da177e4 | 1993 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
1da177e4 | 1994 | break; |
1da177e4 | 1995 | } |
1da177e4 LT |
1996 | } |
1997 | ||
1998 | /** | |
c41f8cbd SS |
1999 | * zfcp_fsf_close_unit - close zfcp unit |
2000 | * @erp_action: pointer to struct zfcp_unit | |
2001 | * Returns: 0 on success, error otherwise | |
1da177e4 | 2002 | */ |
c41f8cbd | 2003 | int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) |
1da177e4 | 2004 | { |
44cc76f2 | 2005 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2006 | struct zfcp_adapter *adapter = erp_action->adapter; |
2007 | struct zfcp_fsf_req *req; | |
2008 | int retval = -EIO; | |
1da177e4 | 2009 | |
0406289e | 2010 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd | 2011 | if (zfcp_fsf_req_sbal_get(adapter)) |
1da177e4 | 2012 | goto out; |
c41f8cbd SS |
2013 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_LUN, |
2014 | ZFCP_REQ_AUTO_CLEANUP, | |
2015 | adapter->pool.fsf_req_erp); | |
025270f0 | 2016 | if (IS_ERR(req)) { |
c41f8cbd SS |
2017 | retval = PTR_ERR(req); |
2018 | goto out; | |
2019 | } | |
1da177e4 | 2020 | |
c41f8cbd SS |
2021 | sbale = zfcp_qdio_sbale_req(req); |
2022 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; | |
1da177e4 LT |
2023 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; |
2024 | ||
c41f8cbd SS |
2025 | req->qtcb->header.port_handle = erp_action->port->handle; |
2026 | req->qtcb->header.lun_handle = erp_action->unit->handle; | |
2027 | req->handler = zfcp_fsf_close_unit_handler; | |
2028 | req->data = erp_action->unit; | |
2029 | req->erp_action = erp_action; | |
2030 | erp_action->fsf_req = req; | |
fdf23452 | 2031 | |
287ac01a | 2032 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
2033 | retval = zfcp_fsf_req_send(req); |
2034 | if (retval) { | |
2035 | zfcp_fsf_req_free(req); | |
2036 | erp_action->fsf_req = NULL; | |
2037 | } | |
2038 | out: | |
0406289e | 2039 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd | 2040 | return retval; |
1da177e4 LT |
2041 | } |
2042 | ||
c9615858 CS |
2043 | static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat) |
2044 | { | |
2045 | lat_rec->sum += lat; | |
c41f8cbd SS |
2046 | lat_rec->min = min(lat_rec->min, lat); |
2047 | lat_rec->max = max(lat_rec->max, lat); | |
c9615858 CS |
2048 | } |
2049 | ||
c41f8cbd | 2050 | static void zfcp_fsf_req_latency(struct zfcp_fsf_req *req) |
c9615858 CS |
2051 | { |
2052 | struct fsf_qual_latency_info *lat_inf; | |
2053 | struct latency_cont *lat; | |
c41f8cbd | 2054 | struct zfcp_unit *unit = req->unit; |
c9615858 | 2055 | |
c41f8cbd | 2056 | lat_inf = &req->qtcb->prefix.prot_status_qual.latency_info; |
c9615858 | 2057 | |
c41f8cbd | 2058 | switch (req->qtcb->bottom.io.data_direction) { |
c9615858 CS |
2059 | case FSF_DATADIR_READ: |
2060 | lat = &unit->latencies.read; | |
2061 | break; | |
2062 | case FSF_DATADIR_WRITE: | |
2063 | lat = &unit->latencies.write; | |
2064 | break; | |
2065 | case FSF_DATADIR_CMND: | |
2066 | lat = &unit->latencies.cmd; | |
2067 | break; | |
2068 | default: | |
2069 | return; | |
2070 | } | |
2071 | ||
49f0f01c | 2072 | spin_lock(&unit->latencies.lock); |
c9615858 CS |
2073 | zfcp_fsf_update_lat(&lat->channel, lat_inf->channel_lat); |
2074 | zfcp_fsf_update_lat(&lat->fabric, lat_inf->fabric_lat); | |
2075 | lat->counter++; | |
49f0f01c | 2076 | spin_unlock(&unit->latencies.lock); |
1da177e4 LT |
2077 | } |
2078 | ||
0997f1c5 SR |
2079 | #ifdef CONFIG_BLK_DEV_IO_TRACE |
2080 | static void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req) | |
2081 | { | |
2082 | struct fsf_qual_latency_info *lat_inf; | |
2083 | struct scsi_cmnd *scsi_cmnd = (struct scsi_cmnd *)fsf_req->data; | |
2084 | struct request *req = scsi_cmnd->request; | |
2085 | struct zfcp_blk_drv_data trace; | |
2086 | int ticks = fsf_req->adapter->timer_ticks; | |
2087 | ||
2088 | trace.flags = 0; | |
2089 | trace.magic = ZFCP_BLK_DRV_DATA_MAGIC; | |
2090 | if (fsf_req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) { | |
2091 | trace.flags |= ZFCP_BLK_LAT_VALID; | |
2092 | lat_inf = &fsf_req->qtcb->prefix.prot_status_qual.latency_info; | |
2093 | trace.channel_lat = lat_inf->channel_lat * ticks; | |
2094 | trace.fabric_lat = lat_inf->fabric_lat * ticks; | |
2095 | } | |
2096 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
2097 | trace.flags |= ZFCP_BLK_REQ_ERROR; | |
2098 | trace.inb_usage = fsf_req->qdio_inb_usage; | |
2099 | trace.outb_usage = fsf_req->qdio_outb_usage; | |
2100 | ||
2101 | blk_add_driver_data(req->q, req, &trace, sizeof(trace)); | |
2102 | } | |
2103 | #else | |
2104 | static inline void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req) | |
2105 | { | |
2106 | } | |
2107 | #endif | |
2108 | ||
c41f8cbd | 2109 | static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2110 | { |
0ac55aa9 | 2111 | struct scsi_cmnd *scpnt; |
1da177e4 | 2112 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) |
c41f8cbd | 2113 | &(req->qtcb->bottom.io.fcp_rsp); |
1da177e4 | 2114 | u32 sns_len; |
f76af7d7 | 2115 | char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; |
1da177e4 | 2116 | unsigned long flags; |
1da177e4 | 2117 | |
c41f8cbd SS |
2118 | read_lock_irqsave(&req->adapter->abort_lock, flags); |
2119 | ||
0ac55aa9 SS |
2120 | scpnt = req->data; |
2121 | if (unlikely(!scpnt)) { | |
2122 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); | |
2123 | return; | |
2124 | } | |
2125 | ||
c41f8cbd | 2126 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ABORTED)) { |
feac6a07 | 2127 | set_host_byte(scpnt, DID_SOFT_ERROR); |
1da177e4 LT |
2128 | goto skip_fsfstatus; |
2129 | } | |
2130 | ||
c41f8cbd | 2131 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { |
feac6a07 | 2132 | set_host_byte(scpnt, DID_ERROR); |
1da177e4 LT |
2133 | goto skip_fsfstatus; |
2134 | } | |
2135 | ||
feac6a07 | 2136 | set_msg_byte(scpnt, COMMAND_COMPLETE); |
1da177e4 | 2137 | |
1da177e4 | 2138 | scpnt->result |= fcp_rsp_iu->scsi_status; |
1da177e4 | 2139 | |
c41f8cbd SS |
2140 | if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) |
2141 | zfcp_fsf_req_latency(req); | |
c9615858 | 2142 | |
0997f1c5 SR |
2143 | zfcp_fsf_trace_latency(req); |
2144 | ||
1da177e4 | 2145 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) { |
c41f8cbd | 2146 | if (fcp_rsp_info[3] == RSP_CODE_GOOD) |
feac6a07 | 2147 | set_host_byte(scpnt, DID_OK); |
c41f8cbd | 2148 | else { |
feac6a07 | 2149 | set_host_byte(scpnt, DID_ERROR); |
6f71d9bc | 2150 | goto skip_fsfstatus; |
1da177e4 LT |
2151 | } |
2152 | } | |
2153 | ||
1da177e4 | 2154 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_sns_len_valid)) { |
c41f8cbd SS |
2155 | sns_len = FSF_FCP_RSP_SIZE - sizeof(struct fcp_rsp_iu) + |
2156 | fcp_rsp_iu->fcp_rsp_len; | |
1da177e4 | 2157 | sns_len = min(sns_len, (u32) SCSI_SENSE_BUFFERSIZE); |
1da177e4 | 2158 | sns_len = min(sns_len, fcp_rsp_iu->fcp_sns_len); |
1da177e4 | 2159 | |
9d058ecf | 2160 | memcpy(scpnt->sense_buffer, |
1da177e4 | 2161 | zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len); |
1da177e4 LT |
2162 | } |
2163 | ||
1da177e4 | 2164 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_under)) { |
7936a892 FT |
2165 | scsi_set_resid(scpnt, fcp_rsp_iu->fcp_resid); |
2166 | if (scsi_bufflen(scpnt) - scsi_get_resid(scpnt) < | |
2167 | scpnt->underflow) | |
feac6a07 | 2168 | set_host_byte(scpnt, DID_ERROR); |
1da177e4 | 2169 | } |
c41f8cbd | 2170 | skip_fsfstatus: |
8a36e453 | 2171 | if (scpnt->result != 0) |
c41f8cbd | 2172 | zfcp_scsi_dbf_event_result("erro", 3, req->adapter, scpnt, req); |
8a36e453 | 2173 | else if (scpnt->retries > 0) |
c41f8cbd | 2174 | zfcp_scsi_dbf_event_result("retr", 4, req->adapter, scpnt, req); |
8a36e453 | 2175 | else |
c41f8cbd | 2176 | zfcp_scsi_dbf_event_result("norm", 6, req->adapter, scpnt, req); |
1da177e4 | 2177 | |
1da177e4 | 2178 | scpnt->host_scribble = NULL; |
1da177e4 | 2179 | (scpnt->scsi_done) (scpnt); |
1da177e4 LT |
2180 | /* |
2181 | * We must hold this lock until scsi_done has been called. | |
2182 | * Otherwise we may call scsi_done after abort regarding this | |
2183 | * command has completed. | |
2184 | * Note: scsi_done must not block! | |
2185 | */ | |
c41f8cbd | 2186 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); |
1da177e4 LT |
2187 | } |
2188 | ||
c41f8cbd | 2189 | static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2190 | { |
1da177e4 | 2191 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) |
c41f8cbd | 2192 | &(req->qtcb->bottom.io.fcp_rsp); |
f76af7d7 | 2193 | char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; |
1da177e4 | 2194 | |
c41f8cbd SS |
2195 | if ((fcp_rsp_info[3] != RSP_CODE_GOOD) || |
2196 | (req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
2197 | req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
2198 | } | |
2199 | ||
2200 | ||
2201 | static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req) | |
2202 | { | |
2203 | struct zfcp_unit *unit; | |
2204 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
2205 | ||
2206 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)) | |
2207 | unit = req->data; | |
2208 | else | |
2209 | unit = req->unit; | |
2210 | ||
2211 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
1da177e4 | 2212 | goto skip_fsfstatus; |
1da177e4 | 2213 | |
c41f8cbd SS |
2214 | switch (header->fsf_status) { |
2215 | case FSF_HANDLE_MISMATCH: | |
2216 | case FSF_PORT_HANDLE_NOT_VALID: | |
5ffd51a5 | 2217 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fssfch1", req); |
c41f8cbd SS |
2218 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2219 | break; | |
2220 | case FSF_FCPLUN_NOT_VALID: | |
2221 | case FSF_LUN_HANDLE_NOT_VALID: | |
5ffd51a5 | 2222 | zfcp_erp_port_reopen(unit->port, 0, "fssfch2", req); |
c41f8cbd | 2223 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2224 | break; |
c41f8cbd SS |
2225 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
2226 | zfcp_fsf_class_not_supp(req); | |
1da177e4 | 2227 | break; |
c41f8cbd SS |
2228 | case FSF_ACCESS_DENIED: |
2229 | zfcp_fsf_access_denied_unit(req, unit); | |
2230 | break; | |
2231 | case FSF_DIRECTION_INDICATOR_NOT_VALID: | |
2232 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
2233 | "Incorrect direction %d, unit 0x%016Lx on port " |
2234 | "0x%016Lx closed\n", | |
c41f8cbd | 2235 | req->qtcb->bottom.io.data_direction, |
7ba58c9c SS |
2236 | (unsigned long long)unit->fcp_lun, |
2237 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 SS |
2238 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch3", |
2239 | req); | |
c41f8cbd SS |
2240 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2241 | break; | |
2242 | case FSF_CMND_LENGTH_NOT_VALID: | |
2243 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
2244 | "Incorrect CDB length %d, unit 0x%016Lx on " |
2245 | "port 0x%016Lx closed\n", | |
c41f8cbd | 2246 | req->qtcb->bottom.io.fcp_cmnd_length, |
7ba58c9c SS |
2247 | (unsigned long long)unit->fcp_lun, |
2248 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 SS |
2249 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch4", |
2250 | req); | |
c41f8cbd SS |
2251 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2252 | break; | |
2253 | case FSF_PORT_BOXED: | |
5ffd51a5 | 2254 | zfcp_erp_port_boxed(unit->port, "fssfch5", req); |
c41f8cbd SS |
2255 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
2256 | ZFCP_STATUS_FSFREQ_RETRY; | |
2257 | break; | |
2258 | case FSF_LUN_BOXED: | |
5ffd51a5 | 2259 | zfcp_erp_unit_boxed(unit, "fssfch6", req); |
c41f8cbd SS |
2260 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
2261 | ZFCP_STATUS_FSFREQ_RETRY; | |
2262 | break; | |
2263 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
2264 | if (header->fsf_status_qual.word[0] == | |
2265 | FSF_SQ_INVOKE_LINK_TEST_PROCEDURE) | |
2266 | zfcp_test_link(unit->port); | |
2267 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 2268 | break; |
1da177e4 | 2269 | } |
c41f8cbd SS |
2270 | skip_fsfstatus: |
2271 | if (req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT) | |
2272 | zfcp_fsf_send_fcp_ctm_handler(req); | |
2273 | else { | |
2274 | zfcp_fsf_send_fcp_command_task_handler(req); | |
2275 | req->unit = NULL; | |
2276 | zfcp_unit_put(unit); | |
2277 | } | |
1da177e4 LT |
2278 | } |
2279 | ||
7ba58c9c SS |
2280 | static void zfcp_set_fcp_dl(struct fcp_cmnd_iu *fcp_cmd, u32 fcp_dl) |
2281 | { | |
2282 | u32 *fcp_dl_ptr; | |
2283 | ||
2284 | /* | |
2285 | * fcp_dl_addr = start address of fcp_cmnd structure + | |
2286 | * size of fixed part + size of dynamically sized add_dcp_cdb field | |
2287 | * SEE FCP-2 documentation | |
2288 | */ | |
2289 | fcp_dl_ptr = (u32 *) ((unsigned char *) &fcp_cmd[1] + | |
2290 | (fcp_cmd->add_fcp_cdb_length << 2)); | |
2291 | *fcp_dl_ptr = fcp_dl; | |
2292 | } | |
2293 | ||
c41f8cbd SS |
2294 | /** |
2295 | * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command) | |
c41f8cbd SS |
2296 | * @unit: unit where command is sent to |
2297 | * @scsi_cmnd: scsi command to be sent | |
1da177e4 | 2298 | */ |
63caf367 CS |
2299 | int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit, |
2300 | struct scsi_cmnd *scsi_cmnd) | |
1da177e4 | 2301 | { |
c41f8cbd SS |
2302 | struct zfcp_fsf_req *req; |
2303 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
2304 | unsigned int sbtype; | |
2305 | int real_bytes, retval = -EIO; | |
63caf367 | 2306 | struct zfcp_adapter *adapter = unit->port->adapter; |
1da177e4 | 2307 | |
c41f8cbd SS |
2308 | if (unlikely(!(atomic_read(&unit->status) & |
2309 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2310 | return -EBUSY; | |
1da177e4 | 2311 | |
0406289e | 2312 | spin_lock(&adapter->req_q_lock); |
8fdf30d5 CS |
2313 | if (atomic_read(&adapter->req_q.count) <= 0) { |
2314 | atomic_inc(&adapter->qdio_outb_full); | |
c41f8cbd | 2315 | goto out; |
8fdf30d5 | 2316 | } |
63caf367 CS |
2317 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, |
2318 | ZFCP_REQ_AUTO_CLEANUP, | |
c41f8cbd | 2319 | adapter->pool.fsf_req_scsi); |
025270f0 | 2320 | if (IS_ERR(req)) { |
c41f8cbd SS |
2321 | retval = PTR_ERR(req); |
2322 | goto out; | |
2323 | } | |
2324 | ||
2325 | zfcp_unit_get(unit); | |
2326 | req->unit = unit; | |
2327 | req->data = scsi_cmnd; | |
2328 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2329 | req->qtcb->header.lun_handle = unit->handle; | |
2330 | req->qtcb->header.port_handle = unit->port->handle; | |
2331 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
2332 | ||
2333 | scsi_cmnd->host_scribble = (unsigned char *) req->req_id; | |
2334 | ||
2335 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) &(req->qtcb->bottom.io.fcp_cmnd); | |
2336 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
2337 | /* | |
2338 | * set depending on data direction: | |
2339 | * data direction bits in SBALE (SB Type) | |
2340 | * data direction bits in QTCB | |
2341 | * data direction bits in FCP_CMND IU | |
2342 | */ | |
2343 | switch (scsi_cmnd->sc_data_direction) { | |
2344 | case DMA_NONE: | |
2345 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
2346 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
1da177e4 | 2347 | break; |
c41f8cbd SS |
2348 | case DMA_FROM_DEVICE: |
2349 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ; | |
2350 | sbtype = SBAL_FLAGS0_TYPE_READ; | |
2351 | fcp_cmnd_iu->rddata = 1; | |
2352 | break; | |
2353 | case DMA_TO_DEVICE: | |
2354 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE; | |
2355 | sbtype = SBAL_FLAGS0_TYPE_WRITE; | |
2356 | fcp_cmnd_iu->wddata = 1; | |
1da177e4 | 2357 | break; |
c41f8cbd | 2358 | case DMA_BIDIRECTIONAL: |
1da177e4 | 2359 | default: |
c41f8cbd SS |
2360 | retval = -EIO; |
2361 | goto failed_scsi_cmnd; | |
1da177e4 LT |
2362 | } |
2363 | ||
c41f8cbd SS |
2364 | if (likely((scsi_cmnd->device->simple_tags) || |
2365 | ((atomic_read(&unit->status) & ZFCP_STATUS_UNIT_READONLY) && | |
2366 | (atomic_read(&unit->status) & ZFCP_STATUS_UNIT_SHARED)))) | |
2367 | fcp_cmnd_iu->task_attribute = SIMPLE_Q; | |
2368 | else | |
2369 | fcp_cmnd_iu->task_attribute = UNTAGGED; | |
1da177e4 | 2370 | |
c41f8cbd SS |
2371 | if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH)) |
2372 | fcp_cmnd_iu->add_fcp_cdb_length = | |
2373 | (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2; | |
1da177e4 | 2374 | |
c41f8cbd | 2375 | memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); |
45633fdc | 2376 | |
c41f8cbd | 2377 | req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + |
7ba58c9c | 2378 | fcp_cmnd_iu->add_fcp_cdb_length + sizeof(u32); |
1da177e4 | 2379 | |
c41f8cbd SS |
2380 | real_bytes = zfcp_qdio_sbals_from_sg(req, sbtype, |
2381 | scsi_sglist(scsi_cmnd), | |
2382 | FSF_MAX_SBALS_PER_REQ); | |
2383 | if (unlikely(real_bytes < 0)) { | |
2384 | if (req->sbal_number < FSF_MAX_SBALS_PER_REQ) | |
2385 | retval = -EIO; | |
2386 | else { | |
2387 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
2388 | "Oversize data package, unit 0x%016Lx " |
2389 | "on port 0x%016Lx closed\n", | |
7ba58c9c SS |
2390 | (unsigned long long)unit->fcp_lun, |
2391 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 2392 | zfcp_erp_unit_shutdown(unit, 0, "fssfct1", req); |
c41f8cbd SS |
2393 | retval = -EINVAL; |
2394 | } | |
2395 | goto failed_scsi_cmnd; | |
1da177e4 | 2396 | } |
1da177e4 | 2397 | |
c41f8cbd | 2398 | zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes); |
1da177e4 | 2399 | |
c41f8cbd SS |
2400 | retval = zfcp_fsf_req_send(req); |
2401 | if (unlikely(retval)) | |
2402 | goto failed_scsi_cmnd; | |
1da177e4 | 2403 | |
c41f8cbd | 2404 | goto out; |
1da177e4 | 2405 | |
c41f8cbd SS |
2406 | failed_scsi_cmnd: |
2407 | zfcp_unit_put(unit); | |
2408 | zfcp_fsf_req_free(req); | |
2409 | scsi_cmnd->host_scribble = NULL; | |
2410 | out: | |
0406289e | 2411 | spin_unlock(&adapter->req_q_lock); |
c41f8cbd | 2412 | return retval; |
1da177e4 LT |
2413 | } |
2414 | ||
2415 | /** | |
c41f8cbd | 2416 | * zfcp_fsf_send_fcp_ctm - send SCSI task management command |
c41f8cbd SS |
2417 | * @unit: pointer to struct zfcp_unit |
2418 | * @tm_flags: unsigned byte for task management flags | |
c41f8cbd | 2419 | * Returns: on success pointer to struct fsf_req, NULL otherwise |
1da177e4 | 2420 | */ |
63caf367 | 2421 | struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *unit, u8 tm_flags) |
1da177e4 | 2422 | { |
44cc76f2 | 2423 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2424 | struct zfcp_fsf_req *req = NULL; |
2425 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
63caf367 | 2426 | struct zfcp_adapter *adapter = unit->port->adapter; |
1da177e4 | 2427 | |
c41f8cbd SS |
2428 | if (unlikely(!(atomic_read(&unit->status) & |
2429 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2430 | return NULL; | |
1da177e4 | 2431 | |
92cab0d9 CS |
2432 | spin_lock_bh(&adapter->req_q_lock); |
2433 | if (zfcp_fsf_req_sbal_get(adapter)) | |
c41f8cbd | 2434 | goto out; |
63caf367 | 2435 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, 0, |
c41f8cbd | 2436 | adapter->pool.fsf_req_scsi); |
633528c3 SS |
2437 | if (IS_ERR(req)) { |
2438 | req = NULL; | |
c41f8cbd | 2439 | goto out; |
633528c3 | 2440 | } |
1da177e4 | 2441 | |
c41f8cbd SS |
2442 | req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT; |
2443 | req->data = unit; | |
2444 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2445 | req->qtcb->header.lun_handle = unit->handle; | |
2446 | req->qtcb->header.port_handle = unit->port->handle; | |
2447 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
2448 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
2449 | req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + | |
7ba58c9c | 2450 | sizeof(u32); |
c41f8cbd SS |
2451 | |
2452 | sbale = zfcp_qdio_sbale_req(req); | |
2453 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE; | |
2454 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 2455 | |
c41f8cbd SS |
2456 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) &req->qtcb->bottom.io.fcp_cmnd; |
2457 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
2458 | fcp_cmnd_iu->task_management_flags = tm_flags; | |
1da177e4 | 2459 | |
c41f8cbd SS |
2460 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); |
2461 | if (!zfcp_fsf_req_send(req)) | |
2462 | goto out; | |
1da177e4 | 2463 | |
c41f8cbd SS |
2464 | zfcp_fsf_req_free(req); |
2465 | req = NULL; | |
2466 | out: | |
92cab0d9 | 2467 | spin_unlock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
2468 | return req; |
2469 | } | |
1da177e4 | 2470 | |
c41f8cbd SS |
2471 | static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req) |
2472 | { | |
2473 | if (req->qtcb->header.fsf_status != FSF_GOOD) | |
2474 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
2475 | } |
2476 | ||
c41f8cbd SS |
2477 | /** |
2478 | * zfcp_fsf_control_file - control file upload/download | |
2479 | * @adapter: pointer to struct zfcp_adapter | |
2480 | * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc | |
2481 | * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise | |
1da177e4 | 2482 | */ |
c41f8cbd SS |
2483 | struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, |
2484 | struct zfcp_fsf_cfdc *fsf_cfdc) | |
1da177e4 | 2485 | { |
44cc76f2 | 2486 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2487 | struct zfcp_fsf_req *req = NULL; |
2488 | struct fsf_qtcb_bottom_support *bottom; | |
2489 | int direction, retval = -EIO, bytes; | |
2490 | ||
2491 | if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) | |
2492 | return ERR_PTR(-EOPNOTSUPP); | |
2493 | ||
2494 | switch (fsf_cfdc->command) { | |
2495 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
2496 | direction = SBAL_FLAGS0_TYPE_WRITE; | |
2497 | break; | |
2498 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
2499 | direction = SBAL_FLAGS0_TYPE_READ; | |
2500 | break; | |
2501 | default: | |
2502 | return ERR_PTR(-EINVAL); | |
2503 | } | |
1da177e4 | 2504 | |
0406289e | 2505 | spin_lock_bh(&adapter->req_q_lock); |
c41f8cbd SS |
2506 | if (zfcp_fsf_req_sbal_get(adapter)) |
2507 | goto out; | |
1da177e4 | 2508 | |
c41f8cbd | 2509 | req = zfcp_fsf_req_create(adapter, fsf_cfdc->command, 0, NULL); |
025270f0 | 2510 | if (IS_ERR(req)) { |
c41f8cbd SS |
2511 | retval = -EPERM; |
2512 | goto out; | |
2513 | } | |
1da177e4 | 2514 | |
c41f8cbd | 2515 | req->handler = zfcp_fsf_control_file_handler; |
1da177e4 | 2516 | |
c41f8cbd SS |
2517 | sbale = zfcp_qdio_sbale_req(req); |
2518 | sbale[0].flags |= direction; | |
8a36e453 | 2519 | |
c41f8cbd SS |
2520 | bottom = &req->qtcb->bottom.support; |
2521 | bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE; | |
2522 | bottom->option = fsf_cfdc->option; | |
8a36e453 | 2523 | |
c41f8cbd SS |
2524 | bytes = zfcp_qdio_sbals_from_sg(req, direction, fsf_cfdc->sg, |
2525 | FSF_MAX_SBALS_PER_REQ); | |
2526 | if (bytes != ZFCP_CFDC_MAX_SIZE) { | |
2527 | retval = -ENOMEM; | |
2528 | zfcp_fsf_req_free(req); | |
2529 | goto out; | |
2530 | } | |
1da177e4 | 2531 | |
c41f8cbd SS |
2532 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
2533 | retval = zfcp_fsf_req_send(req); | |
2534 | out: | |
0406289e | 2535 | spin_unlock_bh(&adapter->req_q_lock); |
8a36e453 | 2536 | |
c41f8cbd SS |
2537 | if (!retval) { |
2538 | wait_event(req->completion_wq, | |
2539 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); | |
2540 | return req; | |
1da177e4 | 2541 | } |
c41f8cbd | 2542 | return ERR_PTR(retval); |
1da177e4 | 2543 | } |