Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
553448f6 | 2 | * zfcp device driver |
1da177e4 | 3 | * |
553448f6 | 4 | * Implementation of FSF commands. |
1da177e4 | 5 | * |
615f59e0 | 6 | * Copyright IBM Corporation 2002, 2010 |
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> |
5a0e3ad6 | 13 | #include <linux/slab.h> |
9d05ce2c | 14 | #include <scsi/fc/fc_els.h> |
1da177e4 | 15 | #include "zfcp_ext.h" |
4318e08c | 16 | #include "zfcp_fc.h" |
dcd20e23 | 17 | #include "zfcp_dbf.h" |
34c2b712 | 18 | #include "zfcp_qdio.h" |
b6bd2fb9 | 19 | #include "zfcp_reqlist.h" |
1da177e4 | 20 | |
287ac01a CS |
21 | static void zfcp_fsf_request_timeout_handler(unsigned long data) |
22 | { | |
23 | struct zfcp_adapter *adapter = (struct zfcp_adapter *) data; | |
339f4f4e | 24 | zfcp_qdio_siosl(adapter); |
5ffd51a5 SS |
25 | zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, |
26 | "fsrth_1", NULL); | |
287ac01a CS |
27 | } |
28 | ||
29 | static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req, | |
30 | unsigned long timeout) | |
31 | { | |
32 | fsf_req->timer.function = zfcp_fsf_request_timeout_handler; | |
33 | fsf_req->timer.data = (unsigned long) fsf_req->adapter; | |
34 | fsf_req->timer.expires = jiffies + timeout; | |
35 | add_timer(&fsf_req->timer); | |
36 | } | |
37 | ||
38 | static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req) | |
39 | { | |
40 | BUG_ON(!fsf_req->erp_action); | |
41 | fsf_req->timer.function = zfcp_erp_timeout_handler; | |
42 | fsf_req->timer.data = (unsigned long) fsf_req->erp_action; | |
43 | fsf_req->timer.expires = jiffies + 30 * HZ; | |
44 | add_timer(&fsf_req->timer); | |
45 | } | |
46 | ||
1da177e4 LT |
47 | /* association between FSF command and FSF QTCB type */ |
48 | static u32 fsf_qtcb_type[] = { | |
49 | [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND, | |
50 | [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND, | |
51 | [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND, | |
52 | [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND, | |
53 | [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND, | |
54 | [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND, | |
55 | [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND, | |
56 | [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND, | |
57 | [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND, | |
58 | [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND, | |
59 | [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND, | |
60 | [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND, | |
61 | [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND | |
62 | }; | |
63 | ||
553448f6 CS |
64 | static void zfcp_act_eval_err(struct zfcp_adapter *adapter, u32 table) |
65 | { | |
c41f8cbd | 66 | u16 subtable = table >> 16; |
553448f6 | 67 | u16 rule = table & 0xffff; |
ff3b24fa | 68 | const char *act_type[] = { "unknown", "OS", "WWPN", "DID", "LUN" }; |
553448f6 | 69 | |
ff3b24fa | 70 | if (subtable && subtable < ARRAY_SIZE(act_type)) |
553448f6 | 71 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
72 | "Access denied according to ACT rule type %s, " |
73 | "rule %d\n", act_type[subtable], rule); | |
553448f6 CS |
74 | } |
75 | ||
76 | static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req, | |
77 | struct zfcp_port *port) | |
78 | { | |
79 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
80 | dev_warn(&req->adapter->ccw_device->dev, | |
ff3b24fa | 81 | "Access denied to port 0x%016Lx\n", |
7ba58c9c | 82 | (unsigned long long)port->wwpn); |
553448f6 CS |
83 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); |
84 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); | |
5ffd51a5 | 85 | zfcp_erp_port_access_denied(port, "fspad_1", req); |
553448f6 CS |
86 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
87 | } | |
88 | ||
89 | static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req *req, | |
90 | struct zfcp_unit *unit) | |
91 | { | |
92 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
93 | dev_warn(&req->adapter->ccw_device->dev, | |
ff3b24fa | 94 | "Access denied to unit 0x%016Lx on port 0x%016Lx\n", |
7ba58c9c SS |
95 | (unsigned long long)unit->fcp_lun, |
96 | (unsigned long long)unit->port->wwpn); | |
553448f6 CS |
97 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); |
98 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); | |
5ffd51a5 | 99 | zfcp_erp_unit_access_denied(unit, "fsuad_1", req); |
553448f6 CS |
100 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
101 | } | |
102 | ||
103 | static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req) | |
104 | { | |
ff3b24fa CS |
105 | dev_err(&req->adapter->ccw_device->dev, "FCP device not " |
106 | "operational because of an unsupported FC class\n"); | |
5ffd51a5 | 107 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fscns_1", req); |
553448f6 CS |
108 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
109 | } | |
110 | ||
c41f8cbd SS |
111 | /** |
112 | * zfcp_fsf_req_free - free memory used by fsf request | |
113 | * @fsf_req: pointer to struct zfcp_fsf_req | |
1da177e4 | 114 | */ |
c41f8cbd | 115 | void zfcp_fsf_req_free(struct zfcp_fsf_req *req) |
1da177e4 | 116 | { |
c41f8cbd | 117 | if (likely(req->pool)) { |
a4623c46 SS |
118 | if (likely(req->qtcb)) |
119 | mempool_free(req->qtcb, req->adapter->pool.qtcb_pool); | |
c41f8cbd | 120 | mempool_free(req, req->pool); |
dd52e0ea HC |
121 | return; |
122 | } | |
123 | ||
a4623c46 SS |
124 | if (likely(req->qtcb)) |
125 | kmem_cache_free(zfcp_data.qtcb_cache, req->qtcb); | |
126 | kfree(req); | |
1da177e4 LT |
127 | } |
128 | ||
c41f8cbd | 129 | static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req) |
1da177e4 | 130 | { |
ecf0c772 | 131 | unsigned long flags; |
c41f8cbd SS |
132 | struct fsf_status_read_buffer *sr_buf = req->data; |
133 | struct zfcp_adapter *adapter = req->adapter; | |
134 | struct zfcp_port *port; | |
800c0cad | 135 | int d_id = ntoh24(sr_buf->d_id); |
1da177e4 | 136 | |
ecf0c772 SS |
137 | read_lock_irqsave(&adapter->port_list_lock, flags); |
138 | list_for_each_entry(port, &adapter->port_list, list) | |
c41f8cbd | 139 | if (port->d_id == d_id) { |
5ffd51a5 | 140 | zfcp_erp_port_reopen(port, 0, "fssrpc1", req); |
ecf0c772 | 141 | break; |
c41f8cbd | 142 | } |
ecf0c772 | 143 | read_unlock_irqrestore(&adapter->port_list_lock, flags); |
1da177e4 LT |
144 | } |
145 | ||
5ffd51a5 | 146 | static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, char *id, |
c41f8cbd | 147 | struct fsf_link_down_info *link_down) |
aef4a983 | 148 | { |
c41f8cbd | 149 | struct zfcp_adapter *adapter = req->adapter; |
698ec016 | 150 | |
c41f8cbd | 151 | if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED) |
ee69ab7a MS |
152 | return; |
153 | ||
154 | atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status); | |
70932935 | 155 | |
a2fa0aed | 156 | zfcp_scsi_schedule_rports_block(adapter); |
ee69ab7a | 157 | |
c41f8cbd | 158 | if (!link_down) |
2f8f3ed5 | 159 | goto out; |
ee69ab7a | 160 | |
aef4a983 MS |
161 | switch (link_down->error_code) { |
162 | case FSF_PSQ_LINK_NO_LIGHT: | |
c41f8cbd | 163 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
164 | "There is no light signal from the local " |
165 | "fibre channel cable\n"); | |
aef4a983 MS |
166 | break; |
167 | case FSF_PSQ_LINK_WRAP_PLUG: | |
c41f8cbd | 168 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
169 | "There is a wrap plug instead of a fibre " |
170 | "channel cable\n"); | |
aef4a983 MS |
171 | break; |
172 | case FSF_PSQ_LINK_NO_FCP: | |
c41f8cbd | 173 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
174 | "The adjacent fibre channel node does not " |
175 | "support FCP\n"); | |
aef4a983 MS |
176 | break; |
177 | case FSF_PSQ_LINK_FIRMWARE_UPDATE: | |
c41f8cbd | 178 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
179 | "The FCP device is suspended because of a " |
180 | "firmware update\n"); | |
553448f6 | 181 | break; |
aef4a983 | 182 | case FSF_PSQ_LINK_INVALID_WWPN: |
c41f8cbd | 183 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
184 | "The FCP device detected a WWPN that is " |
185 | "duplicate or not valid\n"); | |
aef4a983 MS |
186 | break; |
187 | case FSF_PSQ_LINK_NO_NPIV_SUPPORT: | |
c41f8cbd | 188 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 189 | "The fibre channel fabric does not support NPIV\n"); |
aef4a983 MS |
190 | break; |
191 | case FSF_PSQ_LINK_NO_FCP_RESOURCES: | |
c41f8cbd | 192 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 193 | "The FCP adapter cannot support more NPIV ports\n"); |
aef4a983 MS |
194 | break; |
195 | case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: | |
c41f8cbd | 196 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
197 | "The adjacent switch cannot support " |
198 | "more NPIV ports\n"); | |
aef4a983 MS |
199 | break; |
200 | case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: | |
c41f8cbd | 201 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
202 | "The FCP adapter could not log in to the " |
203 | "fibre channel fabric\n"); | |
aef4a983 MS |
204 | break; |
205 | case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: | |
c41f8cbd | 206 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
207 | "The WWPN assignment file on the FCP adapter " |
208 | "has been damaged\n"); | |
aef4a983 MS |
209 | break; |
210 | case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: | |
c41f8cbd | 211 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
212 | "The mode table on the FCP adapter " |
213 | "has been damaged\n"); | |
aef4a983 MS |
214 | break; |
215 | case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: | |
c41f8cbd | 216 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
217 | "All NPIV ports on the FCP adapter have " |
218 | "been assigned\n"); | |
aef4a983 MS |
219 | break; |
220 | default: | |
c41f8cbd | 221 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
222 | "The link between the FCP adapter and " |
223 | "the FC fabric is down\n"); | |
aef4a983 | 224 | } |
c41f8cbd SS |
225 | out: |
226 | zfcp_erp_adapter_failed(adapter, id, req); | |
aef4a983 MS |
227 | } |
228 | ||
c41f8cbd | 229 | static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req) |
1da177e4 | 230 | { |
c41f8cbd SS |
231 | struct fsf_status_read_buffer *sr_buf = req->data; |
232 | struct fsf_link_down_info *ldi = | |
233 | (struct fsf_link_down_info *) &sr_buf->payload; | |
1da177e4 | 234 | |
c41f8cbd SS |
235 | switch (sr_buf->status_subtype) { |
236 | case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: | |
5ffd51a5 | 237 | zfcp_fsf_link_down_info_eval(req, "fssrld1", ldi); |
1da177e4 | 238 | break; |
c41f8cbd | 239 | case FSF_STATUS_READ_SUB_FDISC_FAILED: |
5ffd51a5 | 240 | zfcp_fsf_link_down_info_eval(req, "fssrld2", ldi); |
1da177e4 | 241 | break; |
c41f8cbd | 242 | case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE: |
5ffd51a5 | 243 | zfcp_fsf_link_down_info_eval(req, "fssrld3", NULL); |
c41f8cbd SS |
244 | }; |
245 | } | |
1da177e4 | 246 | |
c41f8cbd SS |
247 | static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) |
248 | { | |
249 | struct zfcp_adapter *adapter = req->adapter; | |
250 | struct fsf_status_read_buffer *sr_buf = req->data; | |
1da177e4 | 251 | |
c41f8cbd | 252 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
5771710b | 253 | zfcp_dbf_hba_fsf_unsol("dism", adapter->dbf, sr_buf); |
a4623c46 | 254 | mempool_free(sr_buf, adapter->pool.status_read_data); |
c41f8cbd SS |
255 | zfcp_fsf_req_free(req); |
256 | return; | |
257 | } | |
1da177e4 | 258 | |
5771710b | 259 | zfcp_dbf_hba_fsf_unsol("read", adapter->dbf, sr_buf); |
1da177e4 | 260 | |
c41f8cbd SS |
261 | switch (sr_buf->status_type) { |
262 | case FSF_STATUS_READ_PORT_CLOSED: | |
263 | zfcp_fsf_status_read_port_closed(req); | |
1da177e4 | 264 | break; |
c41f8cbd SS |
265 | case FSF_STATUS_READ_INCOMING_ELS: |
266 | zfcp_fc_incoming_els(req); | |
1da177e4 | 267 | break; |
c41f8cbd | 268 | case FSF_STATUS_READ_SENSE_DATA_AVAIL: |
1da177e4 | 269 | break; |
c41f8cbd | 270 | case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: |
ff3b24fa CS |
271 | dev_warn(&adapter->ccw_device->dev, |
272 | "The error threshold for checksum statistics " | |
273 | "has been exceeded\n"); | |
5771710b | 274 | zfcp_dbf_hba_berr(adapter->dbf, req); |
1da177e4 | 275 | break; |
c41f8cbd SS |
276 | case FSF_STATUS_READ_LINK_DOWN: |
277 | zfcp_fsf_status_read_link_down(req); | |
2d1e547f | 278 | zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKDOWN, 0); |
c41f8cbd SS |
279 | break; |
280 | case FSF_STATUS_READ_LINK_UP: | |
281 | dev_info(&adapter->ccw_device->dev, | |
ff3b24fa | 282 | "The local link has been restored\n"); |
c41f8cbd | 283 | /* All ports should be marked as ready to run again */ |
5ffd51a5 | 284 | zfcp_erp_modify_adapter_status(adapter, "fssrh_1", NULL, |
c41f8cbd SS |
285 | ZFCP_STATUS_COMMON_RUNNING, |
286 | ZFCP_SET); | |
287 | zfcp_erp_adapter_reopen(adapter, | |
288 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
289 | ZFCP_STATUS_COMMON_ERP_FAILED, | |
5ffd51a5 | 290 | "fssrh_2", req); |
2d1e547f SS |
291 | zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKUP, 0); |
292 | ||
c41f8cbd SS |
293 | break; |
294 | case FSF_STATUS_READ_NOTIFICATION_LOST: | |
295 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED) | |
5ffd51a5 SS |
296 | zfcp_erp_adapter_access_changed(adapter, "fssrh_3", |
297 | req); | |
c41f8cbd | 298 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS) |
9eae07ef | 299 | queue_work(adapter->work_queue, &adapter->scan_work); |
c41f8cbd SS |
300 | break; |
301 | case FSF_STATUS_READ_CFDC_UPDATED: | |
5ffd51a5 | 302 | zfcp_erp_adapter_access_changed(adapter, "fssrh_4", req); |
c41f8cbd SS |
303 | break; |
304 | case FSF_STATUS_READ_FEATURE_UPDATE_ALERT: | |
305 | adapter->adapter_features = sr_buf->payload.word[0]; | |
1da177e4 | 306 | break; |
1da177e4 LT |
307 | } |
308 | ||
a4623c46 | 309 | mempool_free(sr_buf, adapter->pool.status_read_data); |
c41f8cbd | 310 | zfcp_fsf_req_free(req); |
1da177e4 | 311 | |
c41f8cbd | 312 | atomic_inc(&adapter->stat_miss); |
4544683a | 313 | queue_work(adapter->work_queue, &adapter->stat_work); |
c41f8cbd | 314 | } |
1da177e4 | 315 | |
c41f8cbd SS |
316 | static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req) |
317 | { | |
318 | switch (req->qtcb->header.fsf_status_qual.word[0]) { | |
319 | case FSF_SQ_FCP_RSP_AVAILABLE: | |
320 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
321 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
322 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
323 | return; | |
324 | case FSF_SQ_COMMAND_ABORTED: | |
c41f8cbd SS |
325 | break; |
326 | case FSF_SQ_NO_RECOM: | |
327 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
328 | "The FCP adapter reported a problem " |
329 | "that cannot be recovered\n"); | |
339f4f4e | 330 | zfcp_qdio_siosl(req->adapter); |
5ffd51a5 | 331 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1", req); |
c41f8cbd SS |
332 | break; |
333 | } | |
334 | /* all non-return stats set FSFREQ_ERROR*/ | |
335 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
336 | } |
337 | ||
c41f8cbd | 338 | static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req) |
1da177e4 | 339 | { |
c41f8cbd SS |
340 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
341 | return; | |
1da177e4 | 342 | |
c41f8cbd SS |
343 | switch (req->qtcb->header.fsf_status) { |
344 | case FSF_UNKNOWN_COMMAND: | |
345 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa | 346 | "The FCP adapter does not recognize the command 0x%x\n", |
c41f8cbd | 347 | req->qtcb->header.fsf_command); |
5ffd51a5 | 348 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1", req); |
c41f8cbd SS |
349 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
350 | break; | |
351 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
352 | zfcp_fsf_fsfstatus_qual_eval(req); | |
353 | break; | |
354 | } | |
355 | } | |
1da177e4 | 356 | |
c41f8cbd SS |
357 | static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) |
358 | { | |
359 | struct zfcp_adapter *adapter = req->adapter; | |
360 | struct fsf_qtcb *qtcb = req->qtcb; | |
361 | union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual; | |
1da177e4 | 362 | |
5771710b | 363 | zfcp_dbf_hba_fsf_response(req); |
1da177e4 | 364 | |
c41f8cbd | 365 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
4c571c65 | 366 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
367 | return; |
368 | } | |
1da177e4 | 369 | |
c41f8cbd SS |
370 | switch (qtcb->prefix.prot_status) { |
371 | case FSF_PROT_GOOD: | |
372 | case FSF_PROT_FSF_STATUS_PRESENTED: | |
373 | return; | |
374 | case FSF_PROT_QTCB_VERSION_ERROR: | |
375 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
376 | "QTCB version 0x%x not supported by FCP adapter " |
377 | "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION, | |
378 | psq->word[0], psq->word[1]); | |
5ffd51a5 | 379 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1", req); |
c41f8cbd SS |
380 | break; |
381 | case FSF_PROT_ERROR_STATE: | |
382 | case FSF_PROT_SEQ_NUMB_ERROR: | |
5ffd51a5 | 383 | zfcp_erp_adapter_reopen(adapter, 0, "fspse_2", req); |
4c571c65 | 384 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
385 | break; |
386 | case FSF_PROT_UNSUPP_QTCB_TYPE: | |
387 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 388 | "The QTCB type is not supported by the FCP adapter\n"); |
5ffd51a5 | 389 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3", req); |
c41f8cbd SS |
390 | break; |
391 | case FSF_PROT_HOST_CONNECTION_INITIALIZING: | |
392 | atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT, | |
393 | &adapter->status); | |
394 | break; | |
395 | case FSF_PROT_DUPLICATE_REQUEST_ID: | |
396 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 397 | "0x%Lx is an ambiguous request identifier\n", |
c41f8cbd | 398 | (unsigned long long)qtcb->bottom.support.req_handle); |
5ffd51a5 | 399 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_4", req); |
c41f8cbd SS |
400 | break; |
401 | case FSF_PROT_LINK_DOWN: | |
5ffd51a5 SS |
402 | zfcp_fsf_link_down_info_eval(req, "fspse_5", |
403 | &psq->link_down_info); | |
452b505c | 404 | /* go through reopen to flush pending requests */ |
5ffd51a5 | 405 | zfcp_erp_adapter_reopen(adapter, 0, "fspse_6", req); |
c41f8cbd SS |
406 | break; |
407 | case FSF_PROT_REEST_QUEUE: | |
408 | /* All ports should be marked as ready to run again */ | |
5ffd51a5 | 409 | zfcp_erp_modify_adapter_status(adapter, "fspse_7", NULL, |
c41f8cbd SS |
410 | ZFCP_STATUS_COMMON_RUNNING, |
411 | ZFCP_SET); | |
412 | zfcp_erp_adapter_reopen(adapter, | |
413 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
5ffd51a5 SS |
414 | ZFCP_STATUS_COMMON_ERP_FAILED, |
415 | "fspse_8", req); | |
c41f8cbd SS |
416 | break; |
417 | default: | |
418 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 419 | "0x%x is not a valid transfer protocol status\n", |
c41f8cbd | 420 | qtcb->prefix.prot_status); |
339f4f4e | 421 | zfcp_qdio_siosl(adapter); |
5ffd51a5 | 422 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9", req); |
c41f8cbd SS |
423 | } |
424 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
425 | } |
426 | ||
c41f8cbd SS |
427 | /** |
428 | * zfcp_fsf_req_complete - process completion of a FSF request | |
429 | * @fsf_req: The FSF request that has been completed. | |
430 | * | |
431 | * When a request has been completed either from the FCP adapter, | |
432 | * or it has been dismissed due to a queue shutdown, this function | |
433 | * is called to process the completion status and trigger further | |
434 | * events related to the FSF request. | |
435 | */ | |
bd63eaf4 | 436 | static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req) |
1da177e4 | 437 | { |
c41f8cbd SS |
438 | if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) { |
439 | zfcp_fsf_status_read_handler(req); | |
440 | return; | |
441 | } | |
1da177e4 | 442 | |
c41f8cbd SS |
443 | del_timer(&req->timer); |
444 | zfcp_fsf_protstatus_eval(req); | |
445 | zfcp_fsf_fsfstatus_eval(req); | |
446 | req->handler(req); | |
1da177e4 | 447 | |
c41f8cbd | 448 | if (req->erp_action) |
287ac01a | 449 | zfcp_erp_notify(req->erp_action, 0); |
1da177e4 | 450 | |
c41f8cbd SS |
451 | if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP)) |
452 | zfcp_fsf_req_free(req); | |
453 | else | |
058b8647 | 454 | complete(&req->completion); |
c41f8cbd | 455 | } |
1da177e4 | 456 | |
bd63eaf4 SS |
457 | /** |
458 | * zfcp_fsf_req_dismiss_all - dismiss all fsf requests | |
459 | * @adapter: pointer to struct zfcp_adapter | |
460 | * | |
461 | * Never ever call this without shutting down the adapter first. | |
462 | * Otherwise the adapter would continue using and corrupting s390 storage. | |
463 | * Included BUG_ON() call to ensure this is done. | |
464 | * ERP is supposed to be the only user of this function. | |
465 | */ | |
466 | void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter) | |
467 | { | |
468 | struct zfcp_fsf_req *req, *tmp; | |
bd63eaf4 | 469 | LIST_HEAD(remove_queue); |
bd63eaf4 SS |
470 | |
471 | BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP); | |
b6bd2fb9 | 472 | zfcp_reqlist_move(adapter->req_list, &remove_queue); |
bd63eaf4 SS |
473 | |
474 | list_for_each_entry_safe(req, tmp, &remove_queue, list) { | |
475 | list_del(&req->list); | |
476 | req->status |= ZFCP_STATUS_FSFREQ_DISMISSED; | |
477 | zfcp_fsf_req_complete(req); | |
478 | } | |
479 | } | |
480 | ||
c41f8cbd SS |
481 | static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req) |
482 | { | |
9d05ce2c | 483 | struct fsf_qtcb_bottom_config *bottom = &req->qtcb->bottom.config; |
c41f8cbd SS |
484 | struct zfcp_adapter *adapter = req->adapter; |
485 | struct Scsi_Host *shost = adapter->scsi_host; | |
9d05ce2c | 486 | struct fc_els_flogi *nsp, *plogi; |
1da177e4 | 487 | |
9d05ce2c CS |
488 | /* adjust pointers for missing command code */ |
489 | nsp = (struct fc_els_flogi *) ((u8 *)&bottom->nport_serv_param | |
490 | - sizeof(u32)); | |
491 | plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload | |
492 | - sizeof(u32)); | |
1da177e4 | 493 | |
c41f8cbd SS |
494 | if (req->data) |
495 | memcpy(req->data, bottom, sizeof(*bottom)); | |
496 | ||
9d05ce2c CS |
497 | fc_host_port_name(shost) = nsp->fl_wwpn; |
498 | fc_host_node_name(shost) = nsp->fl_wwnn; | |
800c0cad | 499 | fc_host_port_id(shost) = ntoh24(bottom->s_id); |
c41f8cbd SS |
500 | fc_host_speed(shost) = bottom->fc_link_speed; |
501 | fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3; | |
502 | ||
503 | adapter->hydra_version = bottom->adapter_type; | |
faf4cd85 | 504 | adapter->timer_ticks = bottom->timer_interval & ZFCP_FSF_TIMER_INT_MASK; |
8d88cf3f CS |
505 | adapter->stat_read_buf_num = max(bottom->status_read_buf_num, |
506 | (u16)FSF_STATUS_READS_RECOM); | |
c41f8cbd SS |
507 | |
508 | if (fc_host_permanent_port_name(shost) == -1) | |
509 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
510 | ||
511 | switch (bottom->fc_topology) { | |
512 | case FSF_TOPO_P2P: | |
800c0cad | 513 | adapter->peer_d_id = ntoh24(bottom->peer_d_id); |
9d05ce2c CS |
514 | adapter->peer_wwpn = plogi->fl_wwpn; |
515 | adapter->peer_wwnn = plogi->fl_wwnn; | |
c41f8cbd | 516 | fc_host_port_type(shost) = FC_PORTTYPE_PTP; |
c41f8cbd SS |
517 | break; |
518 | case FSF_TOPO_FABRIC: | |
519 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
c41f8cbd SS |
520 | break; |
521 | case FSF_TOPO_AL: | |
522 | fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; | |
dceab655 | 523 | /* fall through */ |
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 | |
ef3eb71d FB |
532 | zfcp_scsi_set_prot(adapter); |
533 | ||
1da177e4 LT |
534 | return 0; |
535 | } | |
536 | ||
c41f8cbd | 537 | static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) |
553448f6 CS |
538 | { |
539 | struct zfcp_adapter *adapter = req->adapter; | |
c41f8cbd SS |
540 | struct fsf_qtcb *qtcb = req->qtcb; |
541 | struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config; | |
542 | struct Scsi_Host *shost = adapter->scsi_host; | |
553448f6 | 543 | |
c41f8cbd SS |
544 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
545 | return; | |
1da177e4 | 546 | |
c41f8cbd SS |
547 | adapter->fsf_lic_version = bottom->lic_version; |
548 | adapter->adapter_features = bottom->adapter_features; | |
549 | adapter->connection_features = bottom->connection_features; | |
550 | adapter->peer_wwpn = 0; | |
551 | adapter->peer_wwnn = 0; | |
552 | adapter->peer_d_id = 0; | |
8a36e453 | 553 | |
c41f8cbd SS |
554 | switch (qtcb->header.fsf_status) { |
555 | case FSF_GOOD: | |
556 | if (zfcp_fsf_exchange_config_evaluate(req)) | |
557 | return; | |
1da177e4 | 558 | |
c41f8cbd SS |
559 | if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { |
560 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
561 | "FCP adapter maximum QTCB size (%d bytes) " |
562 | "is too small\n", | |
563 | bottom->max_qtcb_size); | |
5ffd51a5 | 564 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1", req); |
c41f8cbd SS |
565 | return; |
566 | } | |
567 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, | |
568 | &adapter->status); | |
1da177e4 | 569 | break; |
c41f8cbd SS |
570 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
571 | fc_host_node_name(shost) = 0; | |
572 | fc_host_port_name(shost) = 0; | |
573 | fc_host_port_id(shost) = 0; | |
574 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; | |
575 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; | |
576 | adapter->hydra_version = 0; | |
1da177e4 | 577 | |
c41f8cbd SS |
578 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, |
579 | &adapter->status); | |
1da177e4 | 580 | |
5ffd51a5 | 581 | zfcp_fsf_link_down_info_eval(req, "fsecdh2", |
c41f8cbd | 582 | &qtcb->header.fsf_status_qual.link_down_info); |
1da177e4 | 583 | break; |
c41f8cbd | 584 | default: |
5ffd51a5 | 585 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3", req); |
c41f8cbd SS |
586 | return; |
587 | } | |
1da177e4 | 588 | |
c41f8cbd SS |
589 | if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) { |
590 | adapter->hardware_version = bottom->hardware_version; | |
591 | memcpy(fc_host_serial_number(shost), bottom->serial_number, | |
592 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
593 | EBCASC(fc_host_serial_number(shost), | |
594 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
595 | } | |
1da177e4 | 596 | |
c41f8cbd SS |
597 | if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) { |
598 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
599 | "The FCP adapter only supports newer " |
600 | "control block versions\n"); | |
5ffd51a5 | 601 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4", req); |
c41f8cbd SS |
602 | return; |
603 | } | |
604 | if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) { | |
605 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
606 | "The FCP adapter only supports older " |
607 | "control block versions\n"); | |
5ffd51a5 | 608 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5", req); |
c41f8cbd SS |
609 | } |
610 | } | |
1da177e4 | 611 | |
c41f8cbd SS |
612 | static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req) |
613 | { | |
614 | struct zfcp_adapter *adapter = req->adapter; | |
615 | struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port; | |
616 | struct Scsi_Host *shost = adapter->scsi_host; | |
1da177e4 | 617 | |
c41f8cbd SS |
618 | if (req->data) |
619 | memcpy(req->data, bottom, sizeof(*bottom)); | |
9eb69aff | 620 | |
0282985d | 621 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) { |
c41f8cbd | 622 | fc_host_permanent_port_name(shost) = bottom->wwpn; |
0282985d CS |
623 | fc_host_port_type(shost) = FC_PORTTYPE_NPIV; |
624 | } else | |
c41f8cbd SS |
625 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); |
626 | fc_host_maxframe_size(shost) = bottom->maximum_frame_size; | |
627 | fc_host_supported_speeds(shost) = bottom->supported_speed; | |
2d8e62bb CS |
628 | memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types, |
629 | FC_FC4_LIST_SIZE); | |
630 | memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types, | |
631 | FC_FC4_LIST_SIZE); | |
c41f8cbd | 632 | } |
1da177e4 | 633 | |
c41f8cbd SS |
634 | static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) |
635 | { | |
c41f8cbd SS |
636 | struct fsf_qtcb *qtcb = req->qtcb; |
637 | ||
638 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
639 | return; | |
640 | ||
641 | switch (qtcb->header.fsf_status) { | |
642 | case FSF_GOOD: | |
643 | zfcp_fsf_exchange_port_evaluate(req); | |
c41f8cbd SS |
644 | break; |
645 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: | |
646 | zfcp_fsf_exchange_port_evaluate(req); | |
5ffd51a5 | 647 | zfcp_fsf_link_down_info_eval(req, "fsepdh1", |
c41f8cbd | 648 | &qtcb->header.fsf_status_qual.link_down_info); |
aef4a983 | 649 | break; |
1da177e4 | 650 | } |
c41f8cbd | 651 | } |
d26ab06e | 652 | |
a4623c46 | 653 | static struct zfcp_fsf_req *zfcp_fsf_alloc(mempool_t *pool) |
c41f8cbd SS |
654 | { |
655 | struct zfcp_fsf_req *req; | |
a4623c46 SS |
656 | |
657 | if (likely(pool)) | |
658 | req = mempool_alloc(pool, GFP_ATOMIC); | |
659 | else | |
660 | req = kmalloc(sizeof(*req), GFP_ATOMIC); | |
661 | ||
662 | if (unlikely(!req)) | |
c41f8cbd | 663 | return NULL; |
a4623c46 | 664 | |
c41f8cbd | 665 | memset(req, 0, sizeof(*req)); |
88f2a977 | 666 | req->pool = pool; |
c41f8cbd SS |
667 | return req; |
668 | } | |
669 | ||
a4623c46 | 670 | static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool) |
c41f8cbd | 671 | { |
a4623c46 | 672 | struct fsf_qtcb *qtcb; |
c41f8cbd SS |
673 | |
674 | if (likely(pool)) | |
675 | qtcb = mempool_alloc(pool, GFP_ATOMIC); | |
676 | else | |
a4623c46 SS |
677 | qtcb = kmem_cache_alloc(zfcp_data.qtcb_cache, GFP_ATOMIC); |
678 | ||
c41f8cbd SS |
679 | if (unlikely(!qtcb)) |
680 | return NULL; | |
681 | ||
682 | memset(qtcb, 0, sizeof(*qtcb)); | |
a4623c46 | 683 | return qtcb; |
c41f8cbd SS |
684 | } |
685 | ||
564e1c86 | 686 | static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio, |
1674b405 CS |
687 | u32 fsf_cmd, u32 sbtype, |
688 | mempool_t *pool) | |
1da177e4 | 689 | { |
564e1c86 | 690 | struct zfcp_adapter *adapter = qdio->adapter; |
a4623c46 | 691 | struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool); |
1da177e4 | 692 | |
c41f8cbd | 693 | if (unlikely(!req)) |
1e9b1643 | 694 | return ERR_PTR(-ENOMEM); |
1da177e4 | 695 | |
c41f8cbd SS |
696 | if (adapter->req_no == 0) |
697 | adapter->req_no++; | |
1da177e4 | 698 | |
c41f8cbd SS |
699 | INIT_LIST_HEAD(&req->list); |
700 | init_timer(&req->timer); | |
058b8647 | 701 | init_completion(&req->completion); |
1da177e4 | 702 | |
c41f8cbd SS |
703 | req->adapter = adapter; |
704 | req->fsf_command = fsf_cmd; | |
52bfb558 | 705 | req->req_id = adapter->req_no; |
c41f8cbd | 706 | |
a4623c46 SS |
707 | if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) { |
708 | if (likely(pool)) | |
709 | req->qtcb = zfcp_qtcb_alloc(adapter->pool.qtcb_pool); | |
710 | else | |
711 | req->qtcb = zfcp_qtcb_alloc(NULL); | |
712 | ||
713 | if (unlikely(!req->qtcb)) { | |
714 | zfcp_fsf_req_free(req); | |
715 | return ERR_PTR(-ENOMEM); | |
716 | } | |
717 | ||
5bdecd22 | 718 | req->seq_no = adapter->fsf_req_seq_no; |
564e1c86 | 719 | req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; |
c41f8cbd SS |
720 | req->qtcb->prefix.req_id = req->req_id; |
721 | req->qtcb->prefix.ulp_info = 26; | |
722 | req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command]; | |
723 | req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION; | |
724 | req->qtcb->header.req_handle = req->req_id; | |
725 | req->qtcb->header.fsf_command = req->fsf_command; | |
c41f8cbd SS |
726 | } |
727 | ||
1674b405 CS |
728 | zfcp_qdio_req_init(adapter->qdio, &req->qdio_req, req->req_id, sbtype, |
729 | req->qtcb, sizeof(struct fsf_qtcb)); | |
730 | ||
c41f8cbd | 731 | return req; |
1da177e4 LT |
732 | } |
733 | ||
c41f8cbd SS |
734 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) |
735 | { | |
736 | struct zfcp_adapter *adapter = req->adapter; | |
564e1c86 | 737 | struct zfcp_qdio *qdio = adapter->qdio; |
b6bd2fb9 | 738 | int with_qtcb = (req->qtcb != NULL); |
e60a6d69 | 739 | int req_id = req->req_id; |
c41f8cbd | 740 | |
b6bd2fb9 | 741 | zfcp_reqlist_add(adapter->req_list, req); |
c41f8cbd | 742 | |
706eca49 | 743 | req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q_free); |
c41f8cbd | 744 | req->issued = get_clock(); |
34c2b712 | 745 | if (zfcp_qdio_send(qdio, &req->qdio_req)) { |
c41f8cbd | 746 | del_timer(&req->timer); |
3765138a | 747 | /* lookup request again, list might have changed */ |
b6bd2fb9 | 748 | zfcp_reqlist_find_rm(adapter->req_list, req_id); |
5ffd51a5 | 749 | zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1", req); |
c41f8cbd SS |
750 | return -EIO; |
751 | } | |
752 | ||
753 | /* Don't increase for unsolicited status */ | |
135ea137 | 754 | if (with_qtcb) |
c41f8cbd | 755 | adapter->fsf_req_seq_no++; |
52bfb558 | 756 | adapter->req_no++; |
c41f8cbd SS |
757 | |
758 | return 0; | |
759 | } | |
760 | ||
761 | /** | |
762 | * zfcp_fsf_status_read - send status read request | |
763 | * @adapter: pointer to struct zfcp_adapter | |
764 | * @req_flags: request flags | |
765 | * Returns: 0 on success, ERROR otherwise | |
1da177e4 | 766 | */ |
564e1c86 | 767 | int zfcp_fsf_status_read(struct zfcp_qdio *qdio) |
1da177e4 | 768 | { |
564e1c86 | 769 | struct zfcp_adapter *adapter = qdio->adapter; |
c41f8cbd SS |
770 | struct zfcp_fsf_req *req; |
771 | struct fsf_status_read_buffer *sr_buf; | |
c41f8cbd | 772 | int retval = -EIO; |
1da177e4 | 773 | |
564e1c86 | 774 | spin_lock_bh(&qdio->req_q_lock); |
6b9e1520 | 775 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd SS |
776 | goto out; |
777 | ||
1674b405 | 778 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS, 0, |
a4623c46 | 779 | adapter->pool.status_read_req); |
025270f0 | 780 | if (IS_ERR(req)) { |
c41f8cbd SS |
781 | retval = PTR_ERR(req); |
782 | goto out; | |
1da177e4 LT |
783 | } |
784 | ||
a4623c46 | 785 | sr_buf = mempool_alloc(adapter->pool.status_read_data, GFP_ATOMIC); |
c41f8cbd SS |
786 | if (!sr_buf) { |
787 | retval = -ENOMEM; | |
788 | goto failed_buf; | |
789 | } | |
790 | memset(sr_buf, 0, sizeof(*sr_buf)); | |
791 | req->data = sr_buf; | |
1674b405 CS |
792 | |
793 | zfcp_qdio_fill_next(qdio, &req->qdio_req, sr_buf, sizeof(*sr_buf)); | |
794 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); | |
059c97d0 | 795 | |
c41f8cbd SS |
796 | retval = zfcp_fsf_req_send(req); |
797 | if (retval) | |
798 | goto failed_req_send; | |
1da177e4 | 799 | |
c41f8cbd SS |
800 | goto out; |
801 | ||
802 | failed_req_send: | |
a4623c46 | 803 | mempool_free(sr_buf, adapter->pool.status_read_data); |
c41f8cbd SS |
804 | failed_buf: |
805 | zfcp_fsf_req_free(req); | |
5771710b | 806 | zfcp_dbf_hba_fsf_unsol("fail", adapter->dbf, NULL); |
c41f8cbd | 807 | out: |
564e1c86 | 808 | spin_unlock_bh(&qdio->req_q_lock); |
c41f8cbd SS |
809 | return retval; |
810 | } | |
811 | ||
812 | static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req) | |
813 | { | |
814 | struct zfcp_unit *unit = req->data; | |
815 | union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual; | |
816 | ||
817 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
818 | return; | |
819 | ||
820 | switch (req->qtcb->header.fsf_status) { | |
1da177e4 | 821 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd | 822 | if (fsq->word[0] == fsq->word[1]) { |
5ffd51a5 SS |
823 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, |
824 | "fsafch1", req); | |
c41f8cbd | 825 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
826 | } |
827 | break; | |
1da177e4 | 828 | case FSF_LUN_HANDLE_NOT_VALID: |
c41f8cbd | 829 | if (fsq->word[0] == fsq->word[1]) { |
5ffd51a5 | 830 | zfcp_erp_port_reopen(unit->port, 0, "fsafch2", req); |
c41f8cbd | 831 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
832 | } |
833 | break; | |
1da177e4 | 834 | case FSF_FCP_COMMAND_DOES_NOT_EXIST: |
c41f8cbd | 835 | req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED; |
1da177e4 | 836 | break; |
1da177e4 | 837 | case FSF_PORT_BOXED: |
5ffd51a5 | 838 | zfcp_erp_port_boxed(unit->port, "fsafch3", req); |
4c571c65 | 839 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 840 | break; |
1da177e4 | 841 | case FSF_LUN_BOXED: |
5ffd51a5 | 842 | zfcp_erp_unit_boxed(unit, "fsafch4", req); |
4c571c65 | 843 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 844 | break; |
1da177e4 | 845 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 846 | switch (fsq->word[0]) { |
1da177e4 | 847 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
6f53a2d2 | 848 | zfcp_fc_test_link(unit->port); |
dceab655 | 849 | /* fall through */ |
1da177e4 | 850 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 851 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 852 | break; |
1da177e4 LT |
853 | } |
854 | break; | |
1da177e4 | 855 | case FSF_GOOD: |
c41f8cbd | 856 | req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED; |
1da177e4 | 857 | break; |
1da177e4 | 858 | } |
1da177e4 LT |
859 | } |
860 | ||
861 | /** | |
c41f8cbd SS |
862 | * zfcp_fsf_abort_fcp_command - abort running SCSI command |
863 | * @old_req_id: unsigned long | |
c41f8cbd | 864 | * @unit: pointer to struct zfcp_unit |
c41f8cbd | 865 | * Returns: pointer to struct zfcp_fsf_req |
1da177e4 | 866 | */ |
1da177e4 | 867 | |
c41f8cbd | 868 | struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id, |
63caf367 | 869 | struct zfcp_unit *unit) |
1da177e4 | 870 | { |
c41f8cbd | 871 | struct zfcp_fsf_req *req = NULL; |
564e1c86 | 872 | struct zfcp_qdio *qdio = unit->port->adapter->qdio; |
8a36e453 | 873 | |
564e1c86 | 874 | spin_lock_bh(&qdio->req_q_lock); |
6b9e1520 | 875 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 876 | goto out; |
564e1c86 | 877 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND, |
1674b405 | 878 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 879 | qdio->adapter->pool.scsi_abort); |
633528c3 SS |
880 | if (IS_ERR(req)) { |
881 | req = NULL; | |
c41f8cbd | 882 | goto out; |
633528c3 | 883 | } |
2abbe866 | 884 | |
c41f8cbd SS |
885 | if (unlikely(!(atomic_read(&unit->status) & |
886 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
887 | goto out_error_free; | |
1da177e4 | 888 | |
1674b405 | 889 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 890 | |
c41f8cbd SS |
891 | req->data = unit; |
892 | req->handler = zfcp_fsf_abort_fcp_command_handler; | |
893 | req->qtcb->header.lun_handle = unit->handle; | |
894 | req->qtcb->header.port_handle = unit->port->handle; | |
895 | req->qtcb->bottom.support.req_handle = (u64) old_req_id; | |
896 | ||
897 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); | |
898 | if (!zfcp_fsf_req_send(req)) | |
899 | goto out; | |
900 | ||
901 | out_error_free: | |
902 | zfcp_fsf_req_free(req); | |
903 | req = NULL; | |
904 | out: | |
564e1c86 | 905 | spin_unlock_bh(&qdio->req_q_lock); |
c41f8cbd | 906 | return req; |
1da177e4 LT |
907 | } |
908 | ||
c41f8cbd | 909 | static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) |
1da177e4 | 910 | { |
c41f8cbd | 911 | struct zfcp_adapter *adapter = req->adapter; |
7c7dc196 | 912 | struct zfcp_fsf_ct_els *ct = req->data; |
c41f8cbd | 913 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1da177e4 | 914 | |
7c7dc196 | 915 | ct->status = -EINVAL; |
1da177e4 | 916 | |
c41f8cbd | 917 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
918 | goto skip_fsfstatus; |
919 | ||
1da177e4 | 920 | switch (header->fsf_status) { |
1da177e4 | 921 | case FSF_GOOD: |
5771710b | 922 | zfcp_dbf_san_ct_response(req); |
7c7dc196 | 923 | ct->status = 0; |
1da177e4 | 924 | break; |
1da177e4 | 925 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 926 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 927 | break; |
1da177e4 | 928 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
929 | switch (header->fsf_status_qual.word[0]){ |
930 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 931 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 932 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 933 | break; |
1da177e4 LT |
934 | } |
935 | break; | |
1da177e4 | 936 | case FSF_ACCESS_DENIED: |
1da177e4 | 937 | break; |
1da177e4 | 938 | case FSF_PORT_BOXED: |
4c571c65 | 939 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 940 | break; |
c41f8cbd | 941 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 942 | zfcp_erp_adapter_reopen(adapter, 0, "fsscth1", req); |
dceab655 | 943 | /* fall through */ |
c41f8cbd | 944 | case FSF_GENERIC_COMMAND_REJECTED: |
1da177e4 | 945 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 946 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 947 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 948 | case FSF_SBAL_MISMATCH: |
c41f8cbd | 949 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
950 | break; |
951 | } | |
952 | ||
953 | skip_fsfstatus: | |
7c7dc196 CS |
954 | if (ct->handler) |
955 | ct->handler(ct->handler_data); | |
c41f8cbd | 956 | } |
1da177e4 | 957 | |
1674b405 CS |
958 | static void zfcp_fsf_setup_ct_els_unchained(struct zfcp_qdio *qdio, |
959 | struct zfcp_qdio_req *q_req, | |
426f6059 CS |
960 | struct scatterlist *sg_req, |
961 | struct scatterlist *sg_resp) | |
962 | { | |
1674b405 CS |
963 | zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_req), sg_req->length); |
964 | zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_resp), sg_resp->length); | |
965 | zfcp_qdio_set_sbale_last(qdio, q_req); | |
426f6059 CS |
966 | } |
967 | ||
39eb7e9a CS |
968 | static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req, |
969 | struct scatterlist *sg_req, | |
01b04759 | 970 | struct scatterlist *sg_resp) |
c41f8cbd | 971 | { |
42428f74 | 972 | struct zfcp_adapter *adapter = req->adapter; |
42428f74 | 973 | u32 feat = adapter->adapter_features; |
c41f8cbd SS |
974 | int bytes; |
975 | ||
39eb7e9a | 976 | if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) { |
1674b405 CS |
977 | if (!zfcp_qdio_sg_one_sbale(sg_req) || |
978 | !zfcp_qdio_sg_one_sbale(sg_resp)) | |
39eb7e9a CS |
979 | return -EOPNOTSUPP; |
980 | ||
1674b405 CS |
981 | zfcp_fsf_setup_ct_els_unchained(adapter->qdio, &req->qdio_req, |
982 | sg_req, sg_resp); | |
426f6059 CS |
983 | return 0; |
984 | } | |
985 | ||
986 | /* use single, unchained SBAL if it can hold the request */ | |
30b6777b | 987 | if (zfcp_qdio_sg_one_sbale(sg_req) && zfcp_qdio_sg_one_sbale(sg_resp)) { |
1674b405 CS |
988 | zfcp_fsf_setup_ct_els_unchained(adapter->qdio, &req->qdio_req, |
989 | sg_req, sg_resp); | |
39eb7e9a CS |
990 | return 0; |
991 | } | |
992 | ||
01b04759 | 993 | bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req, sg_req); |
c41f8cbd | 994 | if (bytes <= 0) |
9072df4d | 995 | return -EIO; |
ef3eb71d | 996 | zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req); |
c41f8cbd | 997 | req->qtcb->bottom.support.req_buf_length = bytes; |
1674b405 | 998 | zfcp_qdio_skip_to_last_sbale(&req->qdio_req); |
c41f8cbd | 999 | |
34c2b712 | 1000 | bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req, |
01b04759 | 1001 | sg_resp); |
b1a58985 | 1002 | req->qtcb->bottom.support.resp_buf_length = bytes; |
c41f8cbd | 1003 | if (bytes <= 0) |
9072df4d | 1004 | return -EIO; |
ef3eb71d | 1005 | zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req); |
98fc4d5c | 1006 | |
b1a58985 CS |
1007 | return 0; |
1008 | } | |
1009 | ||
1010 | static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req, | |
1011 | struct scatterlist *sg_req, | |
1012 | struct scatterlist *sg_resp, | |
01b04759 | 1013 | unsigned int timeout) |
b1a58985 CS |
1014 | { |
1015 | int ret; | |
1016 | ||
01b04759 | 1017 | ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp); |
b1a58985 CS |
1018 | if (ret) |
1019 | return ret; | |
1020 | ||
98fc4d5c | 1021 | /* common settings for ct/gs and els requests */ |
51375ee8 SS |
1022 | if (timeout > 255) |
1023 | timeout = 255; /* max value accepted by hardware */ | |
98fc4d5c | 1024 | req->qtcb->bottom.support.service_class = FSF_CLASS_3; |
51375ee8 SS |
1025 | req->qtcb->bottom.support.timeout = timeout; |
1026 | zfcp_fsf_start_timer(req, (timeout + 10) * HZ); | |
c41f8cbd SS |
1027 | |
1028 | return 0; | |
1da177e4 LT |
1029 | } |
1030 | ||
1031 | /** | |
c41f8cbd SS |
1032 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) |
1033 | * @ct: pointer to struct zfcp_send_ct with data for request | |
1034 | * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req | |
1da177e4 | 1035 | */ |
7c7dc196 | 1036 | int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port, |
51375ee8 SS |
1037 | struct zfcp_fsf_ct_els *ct, mempool_t *pool, |
1038 | unsigned int timeout) | |
1da177e4 | 1039 | { |
564e1c86 | 1040 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
c41f8cbd SS |
1041 | struct zfcp_fsf_req *req; |
1042 | int ret = -EIO; | |
1da177e4 | 1043 | |
564e1c86 | 1044 | spin_lock_bh(&qdio->req_q_lock); |
6b9e1520 | 1045 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1046 | goto out; |
1da177e4 | 1047 | |
1674b405 CS |
1048 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC, |
1049 | SBAL_FLAGS0_TYPE_WRITE_READ, pool); | |
09a46c6e | 1050 | |
025270f0 | 1051 | if (IS_ERR(req)) { |
c41f8cbd SS |
1052 | ret = PTR_ERR(req); |
1053 | goto out; | |
3f0ca62a CS |
1054 | } |
1055 | ||
09a46c6e | 1056 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
01b04759 | 1057 | ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp, timeout); |
553448f6 | 1058 | if (ret) |
1da177e4 | 1059 | goto failed_send; |
1da177e4 | 1060 | |
c41f8cbd | 1061 | req->handler = zfcp_fsf_send_ct_handler; |
5ab944f9 | 1062 | req->qtcb->header.port_handle = wka_port->handle; |
c41f8cbd SS |
1063 | req->data = ct; |
1064 | ||
7c7dc196 | 1065 | zfcp_dbf_san_ct_request(req, wka_port->d_id); |
1da177e4 | 1066 | |
c41f8cbd SS |
1067 | ret = zfcp_fsf_req_send(req); |
1068 | if (ret) | |
1069 | goto failed_send; | |
1da177e4 | 1070 | |
c41f8cbd | 1071 | goto out; |
1da177e4 | 1072 | |
c41f8cbd SS |
1073 | failed_send: |
1074 | zfcp_fsf_req_free(req); | |
c41f8cbd | 1075 | out: |
564e1c86 | 1076 | spin_unlock_bh(&qdio->req_q_lock); |
c41f8cbd | 1077 | return ret; |
1da177e4 LT |
1078 | } |
1079 | ||
c41f8cbd | 1080 | static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1081 | { |
7c7dc196 | 1082 | struct zfcp_fsf_ct_els *send_els = req->data; |
c41f8cbd SS |
1083 | struct zfcp_port *port = send_els->port; |
1084 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1085 | |
c41f8cbd | 1086 | send_els->status = -EINVAL; |
1da177e4 | 1087 | |
c41f8cbd | 1088 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
1089 | goto skip_fsfstatus; |
1090 | ||
1091 | switch (header->fsf_status) { | |
1da177e4 | 1092 | case FSF_GOOD: |
5771710b | 1093 | zfcp_dbf_san_els_response(req); |
c41f8cbd | 1094 | send_els->status = 0; |
1da177e4 | 1095 | break; |
1da177e4 | 1096 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 1097 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 1098 | break; |
1da177e4 | 1099 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1100 | switch (header->fsf_status_qual.word[0]){ |
1101 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1102 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1103 | case FSF_SQ_RETRY_IF_POSSIBLE: |
c41f8cbd | 1104 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1105 | break; |
1da177e4 LT |
1106 | } |
1107 | break; | |
1da177e4 | 1108 | case FSF_ELS_COMMAND_REJECTED: |
1da177e4 | 1109 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1110 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1111 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1112 | break; |
1da177e4 | 1113 | case FSF_ACCESS_DENIED: |
dc577d55 CS |
1114 | if (port) |
1115 | zfcp_fsf_access_denied_port(req, port); | |
1da177e4 | 1116 | break; |
c41f8cbd SS |
1117 | case FSF_SBAL_MISMATCH: |
1118 | /* should never occure, avoided in zfcp_fsf_send_els */ | |
1119 | /* fall through */ | |
1da177e4 | 1120 | default: |
c41f8cbd | 1121 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1122 | break; |
1123 | } | |
1da177e4 | 1124 | skip_fsfstatus: |
aa551daf | 1125 | if (send_els->handler) |
1da177e4 | 1126 | send_els->handler(send_els->handler_data); |
c41f8cbd | 1127 | } |
1da177e4 | 1128 | |
c41f8cbd SS |
1129 | /** |
1130 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) | |
1131 | * @els: pointer to struct zfcp_send_els with data for the command | |
1132 | */ | |
7c7dc196 | 1133 | int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id, |
51375ee8 | 1134 | struct zfcp_fsf_ct_els *els, unsigned int timeout) |
c41f8cbd SS |
1135 | { |
1136 | struct zfcp_fsf_req *req; | |
7c7dc196 | 1137 | struct zfcp_qdio *qdio = adapter->qdio; |
c41f8cbd SS |
1138 | int ret = -EIO; |
1139 | ||
564e1c86 | 1140 | spin_lock_bh(&qdio->req_q_lock); |
6b9e1520 | 1141 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1142 | goto out; |
09a46c6e | 1143 | |
1674b405 CS |
1144 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS, |
1145 | SBAL_FLAGS0_TYPE_WRITE_READ, NULL); | |
09a46c6e | 1146 | |
025270f0 | 1147 | if (IS_ERR(req)) { |
c41f8cbd SS |
1148 | ret = PTR_ERR(req); |
1149 | goto out; | |
1150 | } | |
1151 | ||
09a46c6e | 1152 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
01b04759 SS |
1153 | |
1154 | zfcp_qdio_sbal_limit(qdio, &req->qdio_req, 2); | |
1155 | ||
1156 | ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, timeout); | |
44cc76f2 | 1157 | |
c41f8cbd SS |
1158 | if (ret) |
1159 | goto failed_send; | |
1160 | ||
7c7dc196 | 1161 | hton24(req->qtcb->bottom.support.d_id, d_id); |
c41f8cbd | 1162 | req->handler = zfcp_fsf_send_els_handler; |
c41f8cbd SS |
1163 | req->data = els; |
1164 | ||
5771710b | 1165 | zfcp_dbf_san_els_request(req); |
c41f8cbd | 1166 | |
c41f8cbd SS |
1167 | ret = zfcp_fsf_req_send(req); |
1168 | if (ret) | |
1169 | goto failed_send; | |
1170 | ||
1171 | goto out; | |
1172 | ||
1173 | failed_send: | |
1174 | zfcp_fsf_req_free(req); | |
1175 | out: | |
564e1c86 | 1176 | spin_unlock_bh(&qdio->req_q_lock); |
c41f8cbd | 1177 | return ret; |
1da177e4 LT |
1178 | } |
1179 | ||
c41f8cbd | 1180 | int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1181 | { |
c41f8cbd | 1182 | struct zfcp_fsf_req *req; |
564e1c86 | 1183 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1184 | int retval = -EIO; |
1185 | ||
564e1c86 | 1186 | spin_lock_bh(&qdio->req_q_lock); |
6b9e1520 | 1187 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1188 | goto out; |
09a46c6e | 1189 | |
564e1c86 | 1190 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, |
1674b405 | 1191 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1192 | qdio->adapter->pool.erp_req); |
09a46c6e | 1193 | |
025270f0 | 1194 | if (IS_ERR(req)) { |
c41f8cbd SS |
1195 | retval = PTR_ERR(req); |
1196 | goto out; | |
1da177e4 LT |
1197 | } |
1198 | ||
09a46c6e | 1199 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1200 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1201 | |
c41f8cbd | 1202 | req->qtcb->bottom.config.feature_selection = |
aef4a983 MS |
1203 | FSF_FEATURE_CFDC | |
1204 | FSF_FEATURE_LUN_SHARING | | |
9eb69aff | 1205 | FSF_FEATURE_NOTIFICATION_LOST | |
aef4a983 | 1206 | FSF_FEATURE_UPDATE_ALERT; |
c41f8cbd SS |
1207 | req->erp_action = erp_action; |
1208 | req->handler = zfcp_fsf_exchange_config_data_handler; | |
e60a6d69 | 1209 | erp_action->fsf_req_id = req->req_id; |
1da177e4 | 1210 | |
287ac01a | 1211 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1212 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1213 | if (retval) { |
c41f8cbd | 1214 | zfcp_fsf_req_free(req); |
e60a6d69 | 1215 | erp_action->fsf_req_id = 0; |
1da177e4 | 1216 | } |
c41f8cbd | 1217 | out: |
564e1c86 | 1218 | spin_unlock_bh(&qdio->req_q_lock); |
52ef11a7 SS |
1219 | return retval; |
1220 | } | |
1da177e4 | 1221 | |
564e1c86 | 1222 | int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio, |
c41f8cbd | 1223 | struct fsf_qtcb_bottom_config *data) |
52ef11a7 | 1224 | { |
c41f8cbd SS |
1225 | struct zfcp_fsf_req *req = NULL; |
1226 | int retval = -EIO; | |
1227 | ||
564e1c86 | 1228 | spin_lock_bh(&qdio->req_q_lock); |
6b9e1520 | 1229 | if (zfcp_qdio_sbal_get(qdio)) |
ada81b74 | 1230 | goto out_unlock; |
c41f8cbd | 1231 | |
1674b405 CS |
1232 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, |
1233 | SBAL_FLAGS0_TYPE_READ, NULL); | |
09a46c6e | 1234 | |
025270f0 | 1235 | if (IS_ERR(req)) { |
c41f8cbd | 1236 | retval = PTR_ERR(req); |
ada81b74 | 1237 | goto out_unlock; |
52ef11a7 SS |
1238 | } |
1239 | ||
1674b405 | 1240 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
c41f8cbd | 1241 | req->handler = zfcp_fsf_exchange_config_data_handler; |
52ef11a7 | 1242 | |
c41f8cbd | 1243 | req->qtcb->bottom.config.feature_selection = |
52ef11a7 SS |
1244 | FSF_FEATURE_CFDC | |
1245 | FSF_FEATURE_LUN_SHARING | | |
1246 | FSF_FEATURE_NOTIFICATION_LOST | | |
1247 | FSF_FEATURE_UPDATE_ALERT; | |
1248 | ||
1249 | if (data) | |
c41f8cbd | 1250 | req->data = data; |
52ef11a7 | 1251 | |
c41f8cbd SS |
1252 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
1253 | retval = zfcp_fsf_req_send(req); | |
564e1c86 | 1254 | spin_unlock_bh(&qdio->req_q_lock); |
553448f6 | 1255 | if (!retval) |
058b8647 | 1256 | wait_for_completion(&req->completion); |
52ef11a7 | 1257 | |
c41f8cbd | 1258 | zfcp_fsf_req_free(req); |
ada81b74 | 1259 | return retval; |
52ef11a7 | 1260 | |
ada81b74 | 1261 | out_unlock: |
564e1c86 | 1262 | spin_unlock_bh(&qdio->req_q_lock); |
1da177e4 LT |
1263 | return retval; |
1264 | } | |
1265 | ||
1da177e4 LT |
1266 | /** |
1267 | * zfcp_fsf_exchange_port_data - request information about local port | |
aef4a983 | 1268 | * @erp_action: ERP action for the adapter for which port data is requested |
c41f8cbd | 1269 | * Returns: 0 on success, error otherwise |
1da177e4 | 1270 | */ |
c41f8cbd | 1271 | int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1272 | { |
564e1c86 | 1273 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd | 1274 | struct zfcp_fsf_req *req; |
c41f8cbd | 1275 | int retval = -EIO; |
1da177e4 | 1276 | |
564e1c86 | 1277 | if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1278 | return -EOPNOTSUPP; |
1da177e4 | 1279 | |
564e1c86 | 1280 | spin_lock_bh(&qdio->req_q_lock); |
6b9e1520 | 1281 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1282 | goto out; |
09a46c6e | 1283 | |
564e1c86 | 1284 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, |
1674b405 | 1285 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1286 | qdio->adapter->pool.erp_req); |
09a46c6e | 1287 | |
025270f0 | 1288 | if (IS_ERR(req)) { |
c41f8cbd SS |
1289 | retval = PTR_ERR(req); |
1290 | goto out; | |
aef4a983 MS |
1291 | } |
1292 | ||
09a46c6e | 1293 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1294 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1295 | |
c41f8cbd SS |
1296 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1297 | req->erp_action = erp_action; | |
e60a6d69 | 1298 | erp_action->fsf_req_id = req->req_id; |
52ef11a7 | 1299 | |
287ac01a | 1300 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1301 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1302 | if (retval) { |
c41f8cbd | 1303 | zfcp_fsf_req_free(req); |
e60a6d69 | 1304 | erp_action->fsf_req_id = 0; |
52ef11a7 | 1305 | } |
c41f8cbd | 1306 | out: |
564e1c86 | 1307 | spin_unlock_bh(&qdio->req_q_lock); |
52ef11a7 SS |
1308 | return retval; |
1309 | } | |
1310 | ||
52ef11a7 SS |
1311 | /** |
1312 | * zfcp_fsf_exchange_port_data_sync - request information about local port | |
564e1c86 | 1313 | * @qdio: pointer to struct zfcp_qdio |
c41f8cbd SS |
1314 | * @data: pointer to struct fsf_qtcb_bottom_port |
1315 | * Returns: 0 on success, error otherwise | |
52ef11a7 | 1316 | */ |
564e1c86 | 1317 | int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio, |
c41f8cbd | 1318 | struct fsf_qtcb_bottom_port *data) |
52ef11a7 | 1319 | { |
c41f8cbd SS |
1320 | struct zfcp_fsf_req *req = NULL; |
1321 | int retval = -EIO; | |
52ef11a7 | 1322 | |
564e1c86 | 1323 | if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1324 | return -EOPNOTSUPP; |
52ef11a7 | 1325 | |
564e1c86 | 1326 | spin_lock_bh(&qdio->req_q_lock); |
6b9e1520 | 1327 | if (zfcp_qdio_sbal_get(qdio)) |
ada81b74 | 1328 | goto out_unlock; |
c41f8cbd | 1329 | |
1674b405 CS |
1330 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, |
1331 | SBAL_FLAGS0_TYPE_READ, NULL); | |
09a46c6e | 1332 | |
025270f0 | 1333 | if (IS_ERR(req)) { |
c41f8cbd | 1334 | retval = PTR_ERR(req); |
ada81b74 | 1335 | goto out_unlock; |
1da177e4 LT |
1336 | } |
1337 | ||
52ef11a7 | 1338 | if (data) |
c41f8cbd | 1339 | req->data = data; |
52ef11a7 | 1340 | |
1674b405 | 1341 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
52ef11a7 | 1342 | |
c41f8cbd SS |
1343 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1344 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1345 | retval = zfcp_fsf_req_send(req); | |
564e1c86 | 1346 | spin_unlock_bh(&qdio->req_q_lock); |
ada81b74 | 1347 | |
553448f6 | 1348 | if (!retval) |
058b8647 SS |
1349 | wait_for_completion(&req->completion); |
1350 | ||
c41f8cbd | 1351 | zfcp_fsf_req_free(req); |
1da177e4 | 1352 | |
1da177e4 | 1353 | return retval; |
ada81b74 CS |
1354 | |
1355 | out_unlock: | |
564e1c86 | 1356 | spin_unlock_bh(&qdio->req_q_lock); |
ada81b74 | 1357 | return retval; |
1da177e4 LT |
1358 | } |
1359 | ||
c41f8cbd | 1360 | static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1361 | { |
c41f8cbd SS |
1362 | struct zfcp_port *port = req->data; |
1363 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
9d05ce2c | 1364 | struct fc_els_flogi *plogi; |
1da177e4 | 1365 | |
c41f8cbd | 1366 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
a17c5855 | 1367 | goto out; |
1da177e4 | 1368 | |
1da177e4 | 1369 | switch (header->fsf_status) { |
1da177e4 | 1370 | case FSF_PORT_ALREADY_OPEN: |
1da177e4 | 1371 | break; |
1da177e4 | 1372 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1373 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1374 | break; |
1da177e4 | 1375 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: |
c41f8cbd | 1376 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 1377 | "Not enough FCP adapter resources to open " |
7ba58c9c SS |
1378 | "remote port 0x%016Lx\n", |
1379 | (unsigned long long)port->wwpn); | |
5ffd51a5 | 1380 | zfcp_erp_port_failed(port, "fsoph_1", req); |
c41f8cbd | 1381 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1382 | break; |
1da177e4 | 1383 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1384 | switch (header->fsf_status_qual.word[0]) { |
1385 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1386 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1387 | case FSF_SQ_NO_RETRY_POSSIBLE: |
c41f8cbd | 1388 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1389 | break; |
1390 | } | |
1391 | break; | |
1da177e4 | 1392 | case FSF_GOOD: |
1da177e4 | 1393 | port->handle = header->port_handle; |
1da177e4 LT |
1394 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN | |
1395 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
d736a27b AH |
1396 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
1397 | ZFCP_STATUS_COMMON_ACCESS_BOXED, | |
1398 | &port->status); | |
1da177e4 LT |
1399 | /* check whether D_ID has changed during open */ |
1400 | /* | |
1401 | * FIXME: This check is not airtight, as the FCP channel does | |
1402 | * not monitor closures of target port connections caused on | |
1403 | * the remote side. Thus, they might miss out on invalidating | |
1404 | * locally cached WWPNs (and other N_Port parameters) of gone | |
1405 | * target ports. So, our heroic attempt to make things safe | |
1406 | * could be undermined by 'open port' response data tagged with | |
1407 | * obsolete WWPNs. Another reason to monitor potential | |
1408 | * connection closures ourself at least (by interpreting | |
1409 | * incoming ELS' and unsolicited status). It just crosses my | |
1410 | * mind that one should be able to cross-check by means of | |
1411 | * another GID_PN straight after a port has been opened. | |
1412 | * Alternately, an ADISC/PDISC ELS should suffice, as well. | |
1413 | */ | |
9d05ce2c | 1414 | plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els; |
39eb7e9a | 1415 | if (req->qtcb->bottom.support.els1_length >= |
9d05ce2c | 1416 | FSF_PLOGI_MIN_LEN) |
c41f8cbd | 1417 | zfcp_fc_plogi_evaluate(port, plogi); |
1da177e4 | 1418 | break; |
1da177e4 | 1419 | case FSF_UNKNOWN_OP_SUBTYPE: |
c41f8cbd | 1420 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1421 | break; |
1422 | } | |
a17c5855 MP |
1423 | |
1424 | out: | |
615f59e0 | 1425 | put_device(&port->dev); |
1da177e4 LT |
1426 | } |
1427 | ||
c41f8cbd SS |
1428 | /** |
1429 | * zfcp_fsf_open_port - create and send open port request | |
1430 | * @erp_action: pointer to struct zfcp_erp_action | |
1431 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1432 | */ |
c41f8cbd | 1433 | int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1434 | { |
564e1c86 | 1435 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
a17c5855 | 1436 | struct zfcp_port *port = erp_action->port; |
564e1c86 | 1437 | struct zfcp_fsf_req *req; |
c41f8cbd SS |
1438 | int retval = -EIO; |
1439 | ||
564e1c86 | 1440 | spin_lock_bh(&qdio->req_q_lock); |
6b9e1520 | 1441 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd SS |
1442 | goto out; |
1443 | ||
564e1c86 | 1444 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID, |
1674b405 | 1445 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1446 | qdio->adapter->pool.erp_req); |
09a46c6e | 1447 | |
025270f0 | 1448 | if (IS_ERR(req)) { |
c41f8cbd | 1449 | retval = PTR_ERR(req); |
1da177e4 | 1450 | goto out; |
c41f8cbd | 1451 | } |
1da177e4 | 1452 | |
09a46c6e | 1453 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1454 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1455 | |
c41f8cbd | 1456 | req->handler = zfcp_fsf_open_port_handler; |
800c0cad | 1457 | hton24(req->qtcb->bottom.support.d_id, port->d_id); |
a17c5855 | 1458 | req->data = port; |
c41f8cbd | 1459 | req->erp_action = erp_action; |
e60a6d69 | 1460 | erp_action->fsf_req_id = req->req_id; |
615f59e0 | 1461 | get_device(&port->dev); |
c41f8cbd | 1462 | |
287ac01a | 1463 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1464 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1465 | if (retval) { |
c41f8cbd | 1466 | zfcp_fsf_req_free(req); |
e60a6d69 | 1467 | erp_action->fsf_req_id = 0; |
615f59e0 | 1468 | put_device(&port->dev); |
1da177e4 | 1469 | } |
c41f8cbd | 1470 | out: |
564e1c86 | 1471 | spin_unlock_bh(&qdio->req_q_lock); |
1da177e4 LT |
1472 | return retval; |
1473 | } | |
1474 | ||
c41f8cbd | 1475 | static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1476 | { |
c41f8cbd | 1477 | struct zfcp_port *port = req->data; |
1da177e4 | 1478 | |
c41f8cbd | 1479 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1480 | return; |
1da177e4 | 1481 | |
c41f8cbd | 1482 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1483 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 1484 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1", req); |
c41f8cbd | 1485 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1486 | break; |
1da177e4 | 1487 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 | 1488 | break; |
1da177e4 | 1489 | case FSF_GOOD: |
5ffd51a5 | 1490 | zfcp_erp_modify_port_status(port, "fscph_2", req, |
1da177e4 LT |
1491 | ZFCP_STATUS_COMMON_OPEN, |
1492 | ZFCP_CLEAR); | |
1da177e4 | 1493 | break; |
1da177e4 | 1494 | } |
1da177e4 LT |
1495 | } |
1496 | ||
c41f8cbd SS |
1497 | /** |
1498 | * zfcp_fsf_close_port - create and send close port request | |
1499 | * @erp_action: pointer to struct zfcp_erp_action | |
1500 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1501 | */ |
c41f8cbd | 1502 | int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1503 | { |
564e1c86 | 1504 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1505 | struct zfcp_fsf_req *req; |
1506 | int retval = -EIO; | |
1507 | ||
564e1c86 | 1508 | spin_lock_bh(&qdio->req_q_lock); |
6b9e1520 | 1509 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd SS |
1510 | goto out; |
1511 | ||
564e1c86 | 1512 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT, |
1674b405 | 1513 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1514 | qdio->adapter->pool.erp_req); |
09a46c6e | 1515 | |
025270f0 | 1516 | if (IS_ERR(req)) { |
c41f8cbd | 1517 | retval = PTR_ERR(req); |
1da177e4 | 1518 | goto out; |
c41f8cbd | 1519 | } |
1da177e4 | 1520 | |
09a46c6e | 1521 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1522 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1523 | |
c41f8cbd SS |
1524 | req->handler = zfcp_fsf_close_port_handler; |
1525 | req->data = erp_action->port; | |
1526 | req->erp_action = erp_action; | |
1527 | req->qtcb->header.port_handle = erp_action->port->handle; | |
e60a6d69 | 1528 | erp_action->fsf_req_id = req->req_id; |
c41f8cbd | 1529 | |
287ac01a | 1530 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1531 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1532 | if (retval) { |
c41f8cbd | 1533 | zfcp_fsf_req_free(req); |
e60a6d69 | 1534 | erp_action->fsf_req_id = 0; |
1da177e4 | 1535 | } |
c41f8cbd | 1536 | out: |
564e1c86 | 1537 | spin_unlock_bh(&qdio->req_q_lock); |
1da177e4 LT |
1538 | return retval; |
1539 | } | |
1540 | ||
5ab944f9 SS |
1541 | static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req) |
1542 | { | |
bd0072ec | 1543 | struct zfcp_fc_wka_port *wka_port = req->data; |
5ab944f9 SS |
1544 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1545 | ||
1546 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
bd0072ec | 1547 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 SS |
1548 | goto out; |
1549 | } | |
1550 | ||
1551 | switch (header->fsf_status) { | |
1552 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: | |
1553 | dev_warn(&req->adapter->ccw_device->dev, | |
1554 | "Opening WKA port 0x%x failed\n", wka_port->d_id); | |
dceab655 | 1555 | /* fall through */ |
5ab944f9 SS |
1556 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1557 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
dceab655 | 1558 | /* fall through */ |
5ab944f9 | 1559 | case FSF_ACCESS_DENIED: |
bd0072ec | 1560 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 | 1561 | break; |
5ab944f9 SS |
1562 | case FSF_GOOD: |
1563 | wka_port->handle = header->port_handle; | |
27f492cc SS |
1564 | /* fall through */ |
1565 | case FSF_PORT_ALREADY_OPEN: | |
bd0072ec | 1566 | wka_port->status = ZFCP_FC_WKA_PORT_ONLINE; |
5ab944f9 SS |
1567 | } |
1568 | out: | |
1569 | wake_up(&wka_port->completion_wq); | |
1570 | } | |
1571 | ||
1572 | /** | |
1573 | * zfcp_fsf_open_wka_port - create and send open wka-port request | |
bd0072ec | 1574 | * @wka_port: pointer to struct zfcp_fc_wka_port |
5ab944f9 SS |
1575 | * Returns: 0 on success, error otherwise |
1576 | */ | |
bd0072ec | 1577 | int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port) |
5ab944f9 | 1578 | { |
564e1c86 | 1579 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
5ab944f9 SS |
1580 | struct zfcp_fsf_req *req; |
1581 | int retval = -EIO; | |
1582 | ||
564e1c86 | 1583 | spin_lock_bh(&qdio->req_q_lock); |
6b9e1520 | 1584 | if (zfcp_qdio_sbal_get(qdio)) |
5ab944f9 SS |
1585 | goto out; |
1586 | ||
564e1c86 | 1587 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID, |
1674b405 | 1588 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1589 | qdio->adapter->pool.erp_req); |
09a46c6e | 1590 | |
5ab944f9 SS |
1591 | if (unlikely(IS_ERR(req))) { |
1592 | retval = PTR_ERR(req); | |
1593 | goto out; | |
1594 | } | |
1595 | ||
09a46c6e | 1596 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1597 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
5ab944f9 SS |
1598 | |
1599 | req->handler = zfcp_fsf_open_wka_port_handler; | |
800c0cad | 1600 | hton24(req->qtcb->bottom.support.d_id, wka_port->d_id); |
5ab944f9 SS |
1601 | req->data = wka_port; |
1602 | ||
1603 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1604 | retval = zfcp_fsf_req_send(req); | |
1605 | if (retval) | |
1606 | zfcp_fsf_req_free(req); | |
1607 | out: | |
564e1c86 | 1608 | spin_unlock_bh(&qdio->req_q_lock); |
5ab944f9 SS |
1609 | return retval; |
1610 | } | |
1611 | ||
1612 | static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req) | |
1613 | { | |
bd0072ec | 1614 | struct zfcp_fc_wka_port *wka_port = req->data; |
5ab944f9 SS |
1615 | |
1616 | if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) { | |
1617 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
5ffd51a5 | 1618 | zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1", req); |
5ab944f9 SS |
1619 | } |
1620 | ||
bd0072ec | 1621 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 SS |
1622 | wake_up(&wka_port->completion_wq); |
1623 | } | |
1624 | ||
1625 | /** | |
1626 | * zfcp_fsf_close_wka_port - create and send close wka port request | |
bd0072ec | 1627 | * @wka_port: WKA port to open |
5ab944f9 SS |
1628 | * Returns: 0 on success, error otherwise |
1629 | */ | |
bd0072ec | 1630 | int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port) |
5ab944f9 | 1631 | { |
564e1c86 | 1632 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
5ab944f9 SS |
1633 | struct zfcp_fsf_req *req; |
1634 | int retval = -EIO; | |
1635 | ||
564e1c86 | 1636 | spin_lock_bh(&qdio->req_q_lock); |
6b9e1520 | 1637 | if (zfcp_qdio_sbal_get(qdio)) |
5ab944f9 SS |
1638 | goto out; |
1639 | ||
564e1c86 | 1640 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT, |
1674b405 | 1641 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1642 | qdio->adapter->pool.erp_req); |
09a46c6e | 1643 | |
5ab944f9 SS |
1644 | if (unlikely(IS_ERR(req))) { |
1645 | retval = PTR_ERR(req); | |
1646 | goto out; | |
1647 | } | |
1648 | ||
09a46c6e | 1649 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1650 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
5ab944f9 SS |
1651 | |
1652 | req->handler = zfcp_fsf_close_wka_port_handler; | |
1653 | req->data = wka_port; | |
1654 | req->qtcb->header.port_handle = wka_port->handle; | |
1655 | ||
1656 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1657 | retval = zfcp_fsf_req_send(req); | |
1658 | if (retval) | |
1659 | zfcp_fsf_req_free(req); | |
1660 | out: | |
564e1c86 | 1661 | spin_unlock_bh(&qdio->req_q_lock); |
5ab944f9 SS |
1662 | return retval; |
1663 | } | |
1664 | ||
c41f8cbd | 1665 | static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1666 | { |
c41f8cbd SS |
1667 | struct zfcp_port *port = req->data; |
1668 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1669 | struct zfcp_unit *unit; |
1da177e4 | 1670 | |
c41f8cbd | 1671 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
a5b11dda | 1672 | return; |
1da177e4 | 1673 | |
1da177e4 | 1674 | switch (header->fsf_status) { |
1da177e4 | 1675 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 1676 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1", req); |
c41f8cbd | 1677 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1678 | break; |
1da177e4 | 1679 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1680 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1681 | break; |
1da177e4 | 1682 | case FSF_PORT_BOXED: |
5c815d15 CS |
1683 | /* can't use generic zfcp_erp_modify_port_status because |
1684 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */ | |
1685 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
ecf0c772 SS |
1686 | read_lock(&port->unit_list_lock); |
1687 | list_for_each_entry(unit, &port->unit_list, list) | |
5c815d15 CS |
1688 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, |
1689 | &unit->status); | |
ecf0c772 | 1690 | read_unlock(&port->unit_list_lock); |
dfb3cf00 | 1691 | zfcp_erp_port_boxed(port, "fscpph2", req); |
4c571c65 | 1692 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1693 | break; |
1da177e4 | 1694 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1695 | switch (header->fsf_status_qual.word[0]) { |
1696 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
c41f8cbd | 1697 | /* fall through */ |
1da177e4 | 1698 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1699 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1700 | break; |
1da177e4 LT |
1701 | } |
1702 | break; | |
1da177e4 | 1703 | case FSF_GOOD: |
1da177e4 LT |
1704 | /* can't use generic zfcp_erp_modify_port_status because |
1705 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port | |
1706 | */ | |
1707 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
ecf0c772 SS |
1708 | read_lock(&port->unit_list_lock); |
1709 | list_for_each_entry(unit, &port->unit_list, list) | |
c41f8cbd SS |
1710 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, |
1711 | &unit->status); | |
ecf0c772 | 1712 | read_unlock(&port->unit_list_lock); |
1da177e4 | 1713 | break; |
1da177e4 | 1714 | } |
1da177e4 LT |
1715 | } |
1716 | ||
c41f8cbd SS |
1717 | /** |
1718 | * zfcp_fsf_close_physical_port - close physical port | |
1719 | * @erp_action: pointer to struct zfcp_erp_action | |
1720 | * Returns: 0 on success | |
1da177e4 | 1721 | */ |
c41f8cbd | 1722 | int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1723 | { |
564e1c86 | 1724 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1725 | struct zfcp_fsf_req *req; |
1726 | int retval = -EIO; | |
1727 | ||
564e1c86 | 1728 | spin_lock_bh(&qdio->req_q_lock); |
6b9e1520 | 1729 | if (zfcp_qdio_sbal_get(qdio)) |
1da177e4 | 1730 | goto out; |
1da177e4 | 1731 | |
564e1c86 | 1732 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT, |
1674b405 | 1733 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1734 | qdio->adapter->pool.erp_req); |
09a46c6e | 1735 | |
025270f0 | 1736 | if (IS_ERR(req)) { |
c41f8cbd SS |
1737 | retval = PTR_ERR(req); |
1738 | goto out; | |
1739 | } | |
1da177e4 | 1740 | |
09a46c6e | 1741 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1742 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1743 | |
c41f8cbd SS |
1744 | req->data = erp_action->port; |
1745 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1746 | req->erp_action = erp_action; | |
1747 | req->handler = zfcp_fsf_close_physical_port_handler; | |
e60a6d69 | 1748 | erp_action->fsf_req_id = req->req_id; |
c41f8cbd | 1749 | |
287ac01a | 1750 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1751 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1752 | if (retval) { |
c41f8cbd | 1753 | zfcp_fsf_req_free(req); |
e60a6d69 | 1754 | erp_action->fsf_req_id = 0; |
1da177e4 | 1755 | } |
c41f8cbd | 1756 | out: |
564e1c86 | 1757 | spin_unlock_bh(&qdio->req_q_lock); |
1da177e4 LT |
1758 | return retval; |
1759 | } | |
1760 | ||
c41f8cbd | 1761 | static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1762 | { |
c41f8cbd SS |
1763 | struct zfcp_adapter *adapter = req->adapter; |
1764 | struct zfcp_unit *unit = req->data; | |
1765 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1766 | struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support; | |
1767 | struct fsf_queue_designator *queue_designator = | |
1768 | &header->fsf_status_qual.fsf_queue_designator; | |
aef4a983 | 1769 | int exclusive, readwrite; |
1da177e4 | 1770 | |
c41f8cbd | 1771 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1772 | return; |
1da177e4 | 1773 | |
1da177e4 | 1774 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
b64ddf96 | 1775 | ZFCP_STATUS_COMMON_ACCESS_BOXED | |
1da177e4 LT |
1776 | ZFCP_STATUS_UNIT_SHARED | |
1777 | ZFCP_STATUS_UNIT_READONLY, | |
1778 | &unit->status); | |
1779 | ||
1da177e4 LT |
1780 | switch (header->fsf_status) { |
1781 | ||
1782 | case FSF_PORT_HANDLE_NOT_VALID: | |
5ffd51a5 | 1783 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fsouh_1", req); |
c41f8cbd | 1784 | /* fall through */ |
1da177e4 | 1785 | case FSF_LUN_ALREADY_OPEN: |
1da177e4 | 1786 | break; |
1da177e4 | 1787 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1788 | zfcp_fsf_access_denied_unit(req, unit); |
1da177e4 | 1789 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
553448f6 | 1790 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); |
1da177e4 | 1791 | break; |
1da177e4 | 1792 | case FSF_PORT_BOXED: |
5ffd51a5 | 1793 | zfcp_erp_port_boxed(unit->port, "fsouh_2", req); |
4c571c65 | 1794 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1795 | break; |
1da177e4 | 1796 | case FSF_LUN_SHARING_VIOLATION: |
c41f8cbd | 1797 | if (header->fsf_status_qual.word[0]) |
553448f6 | 1798 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1799 | "LUN 0x%Lx on port 0x%Lx is already in " |
1800 | "use by CSS%d, MIF Image ID %x\n", | |
7ba58c9c SS |
1801 | (unsigned long long)unit->fcp_lun, |
1802 | (unsigned long long)unit->port->wwpn, | |
ff3b24fa CS |
1803 | queue_designator->cssid, |
1804 | queue_designator->hla); | |
c41f8cbd | 1805 | else |
553448f6 CS |
1806 | zfcp_act_eval_err(adapter, |
1807 | header->fsf_status_qual.word[2]); | |
5ffd51a5 | 1808 | zfcp_erp_unit_access_denied(unit, "fsouh_3", req); |
1da177e4 LT |
1809 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
1810 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); | |
c41f8cbd | 1811 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1812 | break; |
1da177e4 | 1813 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: |
c41f8cbd | 1814 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1815 | "No handle is available for LUN " |
1816 | "0x%016Lx on port 0x%016Lx\n", | |
7ba58c9c SS |
1817 | (unsigned long long)unit->fcp_lun, |
1818 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 1819 | zfcp_erp_unit_failed(unit, "fsouh_4", req); |
c41f8cbd SS |
1820 | /* fall through */ |
1821 | case FSF_INVALID_COMMAND_OPTION: | |
1822 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1823 | break; |
1da177e4 | 1824 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1825 | switch (header->fsf_status_qual.word[0]) { |
1826 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
6f53a2d2 | 1827 | zfcp_fc_test_link(unit->port); |
c41f8cbd | 1828 | /* fall through */ |
1da177e4 | 1829 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1830 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1831 | break; |
1da177e4 LT |
1832 | } |
1833 | break; | |
1834 | ||
1da177e4 | 1835 | case FSF_GOOD: |
1da177e4 | 1836 | unit->handle = header->lun_handle; |
1da177e4 | 1837 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
aef4a983 MS |
1838 | |
1839 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) && | |
1840 | (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) && | |
6fcf41d1 | 1841 | !zfcp_ccw_priv_sch(adapter)) { |
aef4a983 MS |
1842 | exclusive = (bottom->lun_access_info & |
1843 | FSF_UNIT_ACCESS_EXCLUSIVE); | |
1844 | readwrite = (bottom->lun_access_info & | |
1845 | FSF_UNIT_ACCESS_OUTBOUND_TRANSFER); | |
1846 | ||
1da177e4 LT |
1847 | if (!exclusive) |
1848 | atomic_set_mask(ZFCP_STATUS_UNIT_SHARED, | |
1849 | &unit->status); | |
1850 | ||
1851 | if (!readwrite) { | |
1852 | atomic_set_mask(ZFCP_STATUS_UNIT_READONLY, | |
1853 | &unit->status); | |
c41f8cbd | 1854 | dev_info(&adapter->ccw_device->dev, |
ff3b24fa CS |
1855 | "SCSI device at LUN 0x%016Lx on port " |
1856 | "0x%016Lx opened read-only\n", | |
7ba58c9c SS |
1857 | (unsigned long long)unit->fcp_lun, |
1858 | (unsigned long long)unit->port->wwpn); | |
1da177e4 LT |
1859 | } |
1860 | ||
1861 | if (exclusive && !readwrite) { | |
c41f8cbd | 1862 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
1863 | "Exclusive read-only access not " |
1864 | "supported (unit 0x%016Lx, " | |
1865 | "port 0x%016Lx)\n", | |
7ba58c9c SS |
1866 | (unsigned long long)unit->fcp_lun, |
1867 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 1868 | zfcp_erp_unit_failed(unit, "fsouh_5", req); |
c41f8cbd | 1869 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
5ffd51a5 | 1870 | zfcp_erp_unit_shutdown(unit, 0, "fsouh_6", req); |
1da177e4 | 1871 | } else if (!exclusive && readwrite) { |
c41f8cbd | 1872 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
1873 | "Shared read-write access not " |
1874 | "supported (unit 0x%016Lx, port " | |
27c3f0a6 | 1875 | "0x%016Lx)\n", |
7ba58c9c SS |
1876 | (unsigned long long)unit->fcp_lun, |
1877 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 1878 | zfcp_erp_unit_failed(unit, "fsouh_7", req); |
c41f8cbd | 1879 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
5ffd51a5 | 1880 | zfcp_erp_unit_shutdown(unit, 0, "fsouh_8", req); |
1da177e4 LT |
1881 | } |
1882 | } | |
1da177e4 | 1883 | break; |
1da177e4 | 1884 | } |
1da177e4 LT |
1885 | } |
1886 | ||
c41f8cbd SS |
1887 | /** |
1888 | * zfcp_fsf_open_unit - open unit | |
1889 | * @erp_action: pointer to struct zfcp_erp_action | |
1890 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1891 | */ |
c41f8cbd | 1892 | int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) |
1da177e4 | 1893 | { |
c41f8cbd | 1894 | struct zfcp_adapter *adapter = erp_action->adapter; |
564e1c86 | 1895 | struct zfcp_qdio *qdio = adapter->qdio; |
c41f8cbd SS |
1896 | struct zfcp_fsf_req *req; |
1897 | int retval = -EIO; | |
1898 | ||
564e1c86 | 1899 | spin_lock_bh(&qdio->req_q_lock); |
6b9e1520 | 1900 | if (zfcp_qdio_sbal_get(qdio)) |
1da177e4 | 1901 | goto out; |
1da177e4 | 1902 | |
564e1c86 | 1903 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN, |
1674b405 | 1904 | SBAL_FLAGS0_TYPE_READ, |
a4623c46 | 1905 | adapter->pool.erp_req); |
09a46c6e | 1906 | |
025270f0 | 1907 | if (IS_ERR(req)) { |
c41f8cbd SS |
1908 | retval = PTR_ERR(req); |
1909 | goto out; | |
1910 | } | |
1911 | ||
09a46c6e | 1912 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1913 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1914 | |
c41f8cbd SS |
1915 | req->qtcb->header.port_handle = erp_action->port->handle; |
1916 | req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun; | |
1917 | req->handler = zfcp_fsf_open_unit_handler; | |
1918 | req->data = erp_action->unit; | |
1919 | req->erp_action = erp_action; | |
e60a6d69 | 1920 | erp_action->fsf_req_id = req->req_id; |
c41f8cbd SS |
1921 | |
1922 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) | |
1923 | req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING; | |
1924 | ||
287ac01a | 1925 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1926 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1927 | if (retval) { |
c41f8cbd | 1928 | zfcp_fsf_req_free(req); |
e60a6d69 | 1929 | erp_action->fsf_req_id = 0; |
1da177e4 | 1930 | } |
c41f8cbd | 1931 | out: |
564e1c86 | 1932 | spin_unlock_bh(&qdio->req_q_lock); |
1da177e4 LT |
1933 | return retval; |
1934 | } | |
1935 | ||
c41f8cbd | 1936 | static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1937 | { |
c41f8cbd | 1938 | struct zfcp_unit *unit = req->data; |
1da177e4 | 1939 | |
c41f8cbd | 1940 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1941 | return; |
1da177e4 | 1942 | |
c41f8cbd | 1943 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1944 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 1945 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fscuh_1", req); |
c41f8cbd | 1946 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1947 | break; |
1da177e4 | 1948 | case FSF_LUN_HANDLE_NOT_VALID: |
5ffd51a5 | 1949 | zfcp_erp_port_reopen(unit->port, 0, "fscuh_2", req); |
c41f8cbd | 1950 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1951 | break; |
1da177e4 | 1952 | case FSF_PORT_BOXED: |
5ffd51a5 | 1953 | zfcp_erp_port_boxed(unit->port, "fscuh_3", req); |
4c571c65 | 1954 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1955 | break; |
1da177e4 | 1956 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 1957 | switch (req->qtcb->header.fsf_status_qual.word[0]) { |
1da177e4 | 1958 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
6f53a2d2 | 1959 | zfcp_fc_test_link(unit->port); |
c41f8cbd | 1960 | /* fall through */ |
1da177e4 | 1961 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1962 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1963 | break; |
1964 | } | |
1965 | break; | |
1da177e4 | 1966 | case FSF_GOOD: |
1da177e4 | 1967 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
1da177e4 | 1968 | break; |
1da177e4 | 1969 | } |
1da177e4 LT |
1970 | } |
1971 | ||
1972 | /** | |
c41f8cbd SS |
1973 | * zfcp_fsf_close_unit - close zfcp unit |
1974 | * @erp_action: pointer to struct zfcp_unit | |
1975 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1976 | */ |
c41f8cbd | 1977 | int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) |
1da177e4 | 1978 | { |
564e1c86 | 1979 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1980 | struct zfcp_fsf_req *req; |
1981 | int retval = -EIO; | |
1da177e4 | 1982 | |
564e1c86 | 1983 | spin_lock_bh(&qdio->req_q_lock); |
6b9e1520 | 1984 | if (zfcp_qdio_sbal_get(qdio)) |
1da177e4 | 1985 | goto out; |
09a46c6e | 1986 | |
564e1c86 | 1987 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN, |
1674b405 | 1988 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1989 | qdio->adapter->pool.erp_req); |
09a46c6e | 1990 | |
025270f0 | 1991 | if (IS_ERR(req)) { |
c41f8cbd SS |
1992 | retval = PTR_ERR(req); |
1993 | goto out; | |
1994 | } | |
1da177e4 | 1995 | |
09a46c6e | 1996 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1997 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1998 | |
c41f8cbd SS |
1999 | req->qtcb->header.port_handle = erp_action->port->handle; |
2000 | req->qtcb->header.lun_handle = erp_action->unit->handle; | |
2001 | req->handler = zfcp_fsf_close_unit_handler; | |
2002 | req->data = erp_action->unit; | |
2003 | req->erp_action = erp_action; | |
e60a6d69 | 2004 | erp_action->fsf_req_id = req->req_id; |
fdf23452 | 2005 | |
287ac01a | 2006 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
2007 | retval = zfcp_fsf_req_send(req); |
2008 | if (retval) { | |
2009 | zfcp_fsf_req_free(req); | |
e60a6d69 | 2010 | erp_action->fsf_req_id = 0; |
c41f8cbd SS |
2011 | } |
2012 | out: | |
564e1c86 | 2013 | spin_unlock_bh(&qdio->req_q_lock); |
c41f8cbd | 2014 | return retval; |
1da177e4 LT |
2015 | } |
2016 | ||
c9615858 CS |
2017 | static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat) |
2018 | { | |
2019 | lat_rec->sum += lat; | |
c41f8cbd SS |
2020 | lat_rec->min = min(lat_rec->min, lat); |
2021 | lat_rec->max = max(lat_rec->max, lat); | |
c9615858 CS |
2022 | } |
2023 | ||
d9742b42 | 2024 | static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi) |
c9615858 | 2025 | { |
d9742b42 CS |
2026 | struct fsf_qual_latency_info *lat_in; |
2027 | struct latency_cont *lat = NULL; | |
c41f8cbd | 2028 | struct zfcp_unit *unit = req->unit; |
d9742b42 CS |
2029 | struct zfcp_blk_drv_data blktrc; |
2030 | int ticks = req->adapter->timer_ticks; | |
c9615858 | 2031 | |
d9742b42 | 2032 | lat_in = &req->qtcb->prefix.prot_status_qual.latency_info; |
c9615858 | 2033 | |
d9742b42 CS |
2034 | blktrc.flags = 0; |
2035 | blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC; | |
2036 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
2037 | blktrc.flags |= ZFCP_BLK_REQ_ERROR; | |
706eca49 | 2038 | blktrc.inb_usage = 0; |
34c2b712 | 2039 | blktrc.outb_usage = req->qdio_req.qdio_outb_usage; |
d9742b42 | 2040 | |
5bbf297c CS |
2041 | if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA && |
2042 | !(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
d9742b42 CS |
2043 | blktrc.flags |= ZFCP_BLK_LAT_VALID; |
2044 | blktrc.channel_lat = lat_in->channel_lat * ticks; | |
2045 | blktrc.fabric_lat = lat_in->fabric_lat * ticks; | |
2046 | ||
2047 | switch (req->qtcb->bottom.io.data_direction) { | |
ef3eb71d FB |
2048 | case FSF_DATADIR_DIF_READ_STRIP: |
2049 | case FSF_DATADIR_DIF_READ_CONVERT: | |
d9742b42 CS |
2050 | case FSF_DATADIR_READ: |
2051 | lat = &unit->latencies.read; | |
2052 | break; | |
ef3eb71d FB |
2053 | case FSF_DATADIR_DIF_WRITE_INSERT: |
2054 | case FSF_DATADIR_DIF_WRITE_CONVERT: | |
d9742b42 CS |
2055 | case FSF_DATADIR_WRITE: |
2056 | lat = &unit->latencies.write; | |
2057 | break; | |
2058 | case FSF_DATADIR_CMND: | |
2059 | lat = &unit->latencies.cmd; | |
2060 | break; | |
2061 | } | |
1da177e4 | 2062 | |
d9742b42 CS |
2063 | if (lat) { |
2064 | spin_lock(&unit->latencies.lock); | |
2065 | zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat); | |
2066 | zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat); | |
2067 | lat->counter++; | |
2068 | spin_unlock(&unit->latencies.lock); | |
2069 | } | |
0997f1c5 | 2070 | } |
0997f1c5 | 2071 | |
d9742b42 CS |
2072 | blk_add_driver_data(scsi->request->q, scsi->request, &blktrc, |
2073 | sizeof(blktrc)); | |
0997f1c5 | 2074 | } |
0997f1c5 | 2075 | |
c41f8cbd | 2076 | static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2077 | { |
0ac55aa9 | 2078 | struct scsi_cmnd *scpnt; |
4318e08c | 2079 | struct fcp_resp_with_ext *fcp_rsp; |
1da177e4 | 2080 | unsigned long flags; |
1da177e4 | 2081 | |
c41f8cbd SS |
2082 | read_lock_irqsave(&req->adapter->abort_lock, flags); |
2083 | ||
0ac55aa9 SS |
2084 | scpnt = req->data; |
2085 | if (unlikely(!scpnt)) { | |
2086 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); | |
2087 | return; | |
2088 | } | |
2089 | ||
c41f8cbd | 2090 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { |
4c571c65 | 2091 | set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED); |
1da177e4 LT |
2092 | goto skip_fsfstatus; |
2093 | } | |
2094 | ||
ef3eb71d FB |
2095 | switch (req->qtcb->header.fsf_status) { |
2096 | case FSF_INCONSISTENT_PROT_DATA: | |
2097 | case FSF_INVALID_PROT_PARM: | |
2098 | set_host_byte(scpnt, DID_ERROR); | |
2099 | goto skip_fsfstatus; | |
2100 | case FSF_BLOCK_GUARD_CHECK_FAILURE: | |
2101 | zfcp_scsi_dif_sense_error(scpnt, 0x1); | |
2102 | goto skip_fsfstatus; | |
2103 | case FSF_APP_TAG_CHECK_FAILURE: | |
2104 | zfcp_scsi_dif_sense_error(scpnt, 0x2); | |
2105 | goto skip_fsfstatus; | |
2106 | case FSF_REF_TAG_CHECK_FAILURE: | |
2107 | zfcp_scsi_dif_sense_error(scpnt, 0x3); | |
2108 | goto skip_fsfstatus; | |
2109 | } | |
4318e08c CS |
2110 | fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp; |
2111 | zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt); | |
1da177e4 | 2112 | |
c41f8cbd | 2113 | skip_fsfstatus: |
5bbf297c | 2114 | zfcp_fsf_req_trace(req, scpnt); |
ab72528a | 2115 | zfcp_dbf_scsi_result(req->adapter->dbf, scpnt, req); |
1da177e4 | 2116 | |
1da177e4 | 2117 | scpnt->host_scribble = NULL; |
1da177e4 | 2118 | (scpnt->scsi_done) (scpnt); |
1da177e4 LT |
2119 | /* |
2120 | * We must hold this lock until scsi_done has been called. | |
2121 | * Otherwise we may call scsi_done after abort regarding this | |
2122 | * command has completed. | |
2123 | * Note: scsi_done must not block! | |
2124 | */ | |
c41f8cbd | 2125 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); |
1da177e4 LT |
2126 | } |
2127 | ||
c41f8cbd | 2128 | static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2129 | { |
4318e08c CS |
2130 | struct fcp_resp_with_ext *fcp_rsp; |
2131 | struct fcp_resp_rsp_info *rsp_info; | |
1da177e4 | 2132 | |
4318e08c CS |
2133 | fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp; |
2134 | rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1]; | |
2135 | ||
2136 | if ((rsp_info->rsp_code != FCP_TMF_CMPL) || | |
c41f8cbd SS |
2137 | (req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
2138 | req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
2139 | } | |
2140 | ||
2141 | ||
2142 | static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req) | |
2143 | { | |
2144 | struct zfcp_unit *unit; | |
2145 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
2146 | ||
2147 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)) | |
2148 | unit = req->data; | |
2149 | else | |
2150 | unit = req->unit; | |
2151 | ||
2152 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
1da177e4 | 2153 | goto skip_fsfstatus; |
1da177e4 | 2154 | |
c41f8cbd SS |
2155 | switch (header->fsf_status) { |
2156 | case FSF_HANDLE_MISMATCH: | |
2157 | case FSF_PORT_HANDLE_NOT_VALID: | |
5ffd51a5 | 2158 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fssfch1", req); |
c41f8cbd SS |
2159 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2160 | break; | |
2161 | case FSF_FCPLUN_NOT_VALID: | |
2162 | case FSF_LUN_HANDLE_NOT_VALID: | |
5ffd51a5 | 2163 | zfcp_erp_port_reopen(unit->port, 0, "fssfch2", req); |
c41f8cbd | 2164 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2165 | break; |
c41f8cbd SS |
2166 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
2167 | zfcp_fsf_class_not_supp(req); | |
1da177e4 | 2168 | break; |
c41f8cbd SS |
2169 | case FSF_ACCESS_DENIED: |
2170 | zfcp_fsf_access_denied_unit(req, unit); | |
2171 | break; | |
2172 | case FSF_DIRECTION_INDICATOR_NOT_VALID: | |
2173 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
2174 | "Incorrect direction %d, unit 0x%016Lx on port " |
2175 | "0x%016Lx closed\n", | |
c41f8cbd | 2176 | req->qtcb->bottom.io.data_direction, |
7ba58c9c SS |
2177 | (unsigned long long)unit->fcp_lun, |
2178 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 SS |
2179 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch3", |
2180 | req); | |
c41f8cbd SS |
2181 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2182 | break; | |
2183 | case FSF_CMND_LENGTH_NOT_VALID: | |
2184 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
2185 | "Incorrect CDB length %d, unit 0x%016Lx on " |
2186 | "port 0x%016Lx closed\n", | |
c41f8cbd | 2187 | req->qtcb->bottom.io.fcp_cmnd_length, |
7ba58c9c SS |
2188 | (unsigned long long)unit->fcp_lun, |
2189 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 SS |
2190 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch4", |
2191 | req); | |
c41f8cbd SS |
2192 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2193 | break; | |
2194 | case FSF_PORT_BOXED: | |
5ffd51a5 | 2195 | zfcp_erp_port_boxed(unit->port, "fssfch5", req); |
4c571c65 | 2196 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
2197 | break; |
2198 | case FSF_LUN_BOXED: | |
5ffd51a5 | 2199 | zfcp_erp_unit_boxed(unit, "fssfch6", req); |
4c571c65 | 2200 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
2201 | break; |
2202 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
2203 | if (header->fsf_status_qual.word[0] == | |
2204 | FSF_SQ_INVOKE_LINK_TEST_PROCEDURE) | |
6f53a2d2 | 2205 | zfcp_fc_test_link(unit->port); |
c41f8cbd | 2206 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2207 | break; |
1da177e4 | 2208 | } |
c41f8cbd SS |
2209 | skip_fsfstatus: |
2210 | if (req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT) | |
2211 | zfcp_fsf_send_fcp_ctm_handler(req); | |
2212 | else { | |
2213 | zfcp_fsf_send_fcp_command_task_handler(req); | |
2214 | req->unit = NULL; | |
615f59e0 | 2215 | put_device(&unit->dev); |
c41f8cbd | 2216 | } |
1da177e4 LT |
2217 | } |
2218 | ||
ef3eb71d FB |
2219 | static int zfcp_fsf_set_data_dir(struct scsi_cmnd *scsi_cmnd, u32 *data_dir) |
2220 | { | |
2221 | switch (scsi_get_prot_op(scsi_cmnd)) { | |
2222 | case SCSI_PROT_NORMAL: | |
2223 | switch (scsi_cmnd->sc_data_direction) { | |
2224 | case DMA_NONE: | |
2225 | *data_dir = FSF_DATADIR_CMND; | |
2226 | break; | |
2227 | case DMA_FROM_DEVICE: | |
2228 | *data_dir = FSF_DATADIR_READ; | |
2229 | break; | |
2230 | case DMA_TO_DEVICE: | |
2231 | *data_dir = FSF_DATADIR_WRITE; | |
2232 | break; | |
2233 | case DMA_BIDIRECTIONAL: | |
2234 | return -EINVAL; | |
2235 | } | |
2236 | break; | |
2237 | ||
2238 | case SCSI_PROT_READ_STRIP: | |
2239 | *data_dir = FSF_DATADIR_DIF_READ_STRIP; | |
2240 | break; | |
2241 | case SCSI_PROT_WRITE_INSERT: | |
2242 | *data_dir = FSF_DATADIR_DIF_WRITE_INSERT; | |
2243 | break; | |
2244 | case SCSI_PROT_READ_PASS: | |
2245 | *data_dir = FSF_DATADIR_DIF_READ_CONVERT; | |
2246 | break; | |
2247 | case SCSI_PROT_WRITE_PASS: | |
2248 | *data_dir = FSF_DATADIR_DIF_WRITE_CONVERT; | |
2249 | break; | |
2250 | default: | |
2251 | return -EINVAL; | |
2252 | } | |
2253 | ||
2254 | return 0; | |
2255 | } | |
2256 | ||
c41f8cbd SS |
2257 | /** |
2258 | * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command) | |
c41f8cbd SS |
2259 | * @unit: unit where command is sent to |
2260 | * @scsi_cmnd: scsi command to be sent | |
1da177e4 | 2261 | */ |
63caf367 CS |
2262 | int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit, |
2263 | struct scsi_cmnd *scsi_cmnd) | |
1da177e4 | 2264 | { |
c41f8cbd | 2265 | struct zfcp_fsf_req *req; |
4318e08c | 2266 | struct fcp_cmnd *fcp_cmnd; |
bc90c863 | 2267 | unsigned int sbtype = SBAL_FLAGS0_TYPE_READ; |
ef3eb71d | 2268 | int real_bytes, retval = -EIO, dix_bytes = 0; |
63caf367 | 2269 | struct zfcp_adapter *adapter = unit->port->adapter; |
564e1c86 | 2270 | struct zfcp_qdio *qdio = adapter->qdio; |
ef3eb71d | 2271 | struct fsf_qtcb_bottom_io *io; |
1da177e4 | 2272 | |
c41f8cbd SS |
2273 | if (unlikely(!(atomic_read(&unit->status) & |
2274 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2275 | return -EBUSY; | |
1da177e4 | 2276 | |
564e1c86 | 2277 | spin_lock(&qdio->req_q_lock); |
706eca49 | 2278 | if (atomic_read(&qdio->req_q_free) <= 0) { |
564e1c86 | 2279 | atomic_inc(&qdio->req_q_full); |
c41f8cbd | 2280 | goto out; |
8fdf30d5 | 2281 | } |
09a46c6e | 2282 | |
1674b405 CS |
2283 | if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE) |
2284 | sbtype = SBAL_FLAGS0_TYPE_WRITE; | |
2285 | ||
564e1c86 | 2286 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND, |
1674b405 | 2287 | sbtype, adapter->pool.scsi_req); |
09a46c6e | 2288 | |
025270f0 | 2289 | if (IS_ERR(req)) { |
c41f8cbd SS |
2290 | retval = PTR_ERR(req); |
2291 | goto out; | |
2292 | } | |
2293 | ||
ef3eb71d FB |
2294 | scsi_cmnd->host_scribble = (unsigned char *) req->req_id; |
2295 | ||
2296 | io = &req->qtcb->bottom.io; | |
09a46c6e | 2297 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
c41f8cbd SS |
2298 | req->unit = unit; |
2299 | req->data = scsi_cmnd; | |
2300 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2301 | req->qtcb->header.lun_handle = unit->handle; | |
2302 | req->qtcb->header.port_handle = unit->port->handle; | |
ef3eb71d FB |
2303 | io->service_class = FSF_CLASS_3; |
2304 | io->fcp_cmnd_length = FCP_CMND_LEN; | |
c41f8cbd | 2305 | |
ef3eb71d FB |
2306 | if (scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) { |
2307 | io->data_block_length = scsi_cmnd->device->sector_size; | |
2308 | io->ref_tag_value = scsi_get_lba(scsi_cmnd) & 0xFFFFFFFF; | |
1da177e4 LT |
2309 | } |
2310 | ||
ef3eb71d FB |
2311 | zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction); |
2312 | ||
1674b405 CS |
2313 | get_device(&unit->dev); |
2314 | ||
4318e08c CS |
2315 | fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd; |
2316 | zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd); | |
1da177e4 | 2317 | |
ef3eb71d FB |
2318 | if (scsi_prot_sg_count(scsi_cmnd)) { |
2319 | zfcp_qdio_set_data_div(qdio, &req->qdio_req, | |
2320 | scsi_prot_sg_count(scsi_cmnd)); | |
2321 | dix_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, | |
2322 | scsi_prot_sglist(scsi_cmnd)); | |
2323 | io->prot_data_length = dix_bytes; | |
2324 | } | |
2325 | ||
1674b405 | 2326 | real_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, |
01b04759 | 2327 | scsi_sglist(scsi_cmnd)); |
ef3eb71d FB |
2328 | |
2329 | if (unlikely(real_bytes < 0) || unlikely(dix_bytes < 0)) | |
c41f8cbd | 2330 | goto failed_scsi_cmnd; |
1da177e4 | 2331 | |
ef3eb71d FB |
2332 | zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req); |
2333 | ||
c41f8cbd SS |
2334 | retval = zfcp_fsf_req_send(req); |
2335 | if (unlikely(retval)) | |
2336 | goto failed_scsi_cmnd; | |
1da177e4 | 2337 | |
c41f8cbd | 2338 | goto out; |
1da177e4 | 2339 | |
c41f8cbd | 2340 | failed_scsi_cmnd: |
615f59e0 | 2341 | put_device(&unit->dev); |
c41f8cbd SS |
2342 | zfcp_fsf_req_free(req); |
2343 | scsi_cmnd->host_scribble = NULL; | |
2344 | out: | |
564e1c86 | 2345 | spin_unlock(&qdio->req_q_lock); |
c41f8cbd | 2346 | return retval; |
1da177e4 LT |
2347 | } |
2348 | ||
2349 | /** | |
c41f8cbd | 2350 | * zfcp_fsf_send_fcp_ctm - send SCSI task management command |
c41f8cbd SS |
2351 | * @unit: pointer to struct zfcp_unit |
2352 | * @tm_flags: unsigned byte for task management flags | |
c41f8cbd | 2353 | * Returns: on success pointer to struct fsf_req, NULL otherwise |
1da177e4 | 2354 | */ |
63caf367 | 2355 | struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *unit, u8 tm_flags) |
1da177e4 | 2356 | { |
c41f8cbd | 2357 | struct zfcp_fsf_req *req = NULL; |
4318e08c | 2358 | struct fcp_cmnd *fcp_cmnd; |
564e1c86 | 2359 | struct zfcp_qdio *qdio = unit->port->adapter->qdio; |
1da177e4 | 2360 | |
c41f8cbd SS |
2361 | if (unlikely(!(atomic_read(&unit->status) & |
2362 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2363 | return NULL; | |
1da177e4 | 2364 | |
564e1c86 | 2365 | spin_lock_bh(&qdio->req_q_lock); |
6b9e1520 | 2366 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 2367 | goto out; |
09a46c6e | 2368 | |
564e1c86 | 2369 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND, |
1674b405 | 2370 | SBAL_FLAGS0_TYPE_WRITE, |
564e1c86 | 2371 | qdio->adapter->pool.scsi_req); |
09a46c6e | 2372 | |
633528c3 SS |
2373 | if (IS_ERR(req)) { |
2374 | req = NULL; | |
c41f8cbd | 2375 | goto out; |
633528c3 | 2376 | } |
1da177e4 | 2377 | |
c41f8cbd SS |
2378 | req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT; |
2379 | req->data = unit; | |
2380 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2381 | req->qtcb->header.lun_handle = unit->handle; | |
2382 | req->qtcb->header.port_handle = unit->port->handle; | |
2383 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
2384 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
4318e08c | 2385 | req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN; |
c41f8cbd | 2386 | |
1674b405 | 2387 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 2388 | |
4318e08c CS |
2389 | fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd; |
2390 | zfcp_fc_fcp_tm(fcp_cmnd, unit->device, tm_flags); | |
1da177e4 | 2391 | |
c41f8cbd SS |
2392 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); |
2393 | if (!zfcp_fsf_req_send(req)) | |
2394 | goto out; | |
1da177e4 | 2395 | |
c41f8cbd SS |
2396 | zfcp_fsf_req_free(req); |
2397 | req = NULL; | |
2398 | out: | |
564e1c86 | 2399 | spin_unlock_bh(&qdio->req_q_lock); |
c41f8cbd SS |
2400 | return req; |
2401 | } | |
1da177e4 | 2402 | |
c41f8cbd SS |
2403 | static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req) |
2404 | { | |
1da177e4 LT |
2405 | } |
2406 | ||
c41f8cbd SS |
2407 | /** |
2408 | * zfcp_fsf_control_file - control file upload/download | |
2409 | * @adapter: pointer to struct zfcp_adapter | |
2410 | * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc | |
2411 | * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise | |
1da177e4 | 2412 | */ |
c41f8cbd SS |
2413 | struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, |
2414 | struct zfcp_fsf_cfdc *fsf_cfdc) | |
1da177e4 | 2415 | { |
564e1c86 | 2416 | struct zfcp_qdio *qdio = adapter->qdio; |
c41f8cbd SS |
2417 | struct zfcp_fsf_req *req = NULL; |
2418 | struct fsf_qtcb_bottom_support *bottom; | |
2419 | int direction, retval = -EIO, bytes; | |
2420 | ||
2421 | if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) | |
2422 | return ERR_PTR(-EOPNOTSUPP); | |
2423 | ||
2424 | switch (fsf_cfdc->command) { | |
2425 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
2426 | direction = SBAL_FLAGS0_TYPE_WRITE; | |
2427 | break; | |
2428 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
2429 | direction = SBAL_FLAGS0_TYPE_READ; | |
2430 | break; | |
2431 | default: | |
2432 | return ERR_PTR(-EINVAL); | |
2433 | } | |
1da177e4 | 2434 | |
564e1c86 | 2435 | spin_lock_bh(&qdio->req_q_lock); |
6b9e1520 | 2436 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 2437 | goto out; |
1da177e4 | 2438 | |
1674b405 | 2439 | req = zfcp_fsf_req_create(qdio, fsf_cfdc->command, direction, NULL); |
025270f0 | 2440 | if (IS_ERR(req)) { |
c41f8cbd SS |
2441 | retval = -EPERM; |
2442 | goto out; | |
2443 | } | |
1da177e4 | 2444 | |
c41f8cbd | 2445 | req->handler = zfcp_fsf_control_file_handler; |
1da177e4 | 2446 | |
c41f8cbd SS |
2447 | bottom = &req->qtcb->bottom.support; |
2448 | bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE; | |
2449 | bottom->option = fsf_cfdc->option; | |
8a36e453 | 2450 | |
01b04759 SS |
2451 | bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, fsf_cfdc->sg); |
2452 | ||
c41f8cbd | 2453 | if (bytes != ZFCP_CFDC_MAX_SIZE) { |
c41f8cbd SS |
2454 | zfcp_fsf_req_free(req); |
2455 | goto out; | |
2456 | } | |
ef3eb71d | 2457 | zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req); |
1da177e4 | 2458 | |
c41f8cbd SS |
2459 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
2460 | retval = zfcp_fsf_req_send(req); | |
2461 | out: | |
564e1c86 | 2462 | spin_unlock_bh(&qdio->req_q_lock); |
8a36e453 | 2463 | |
c41f8cbd | 2464 | if (!retval) { |
058b8647 | 2465 | wait_for_completion(&req->completion); |
c41f8cbd | 2466 | return req; |
1da177e4 | 2467 | } |
c41f8cbd | 2468 | return ERR_PTR(retval); |
1da177e4 | 2469 | } |
bd63eaf4 SS |
2470 | |
2471 | /** | |
2472 | * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO | |
2473 | * @adapter: pointer to struct zfcp_adapter | |
2474 | * @sbal_idx: response queue index of SBAL to be processed | |
2475 | */ | |
564e1c86 | 2476 | void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx) |
bd63eaf4 | 2477 | { |
564e1c86 | 2478 | struct zfcp_adapter *adapter = qdio->adapter; |
706eca49 | 2479 | struct qdio_buffer *sbal = qdio->res_q[sbal_idx]; |
bd63eaf4 SS |
2480 | struct qdio_buffer_element *sbale; |
2481 | struct zfcp_fsf_req *fsf_req; | |
b6bd2fb9 | 2482 | unsigned long req_id; |
bd63eaf4 SS |
2483 | int idx; |
2484 | ||
2485 | for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) { | |
2486 | ||
2487 | sbale = &sbal->element[idx]; | |
2488 | req_id = (unsigned long) sbale->addr; | |
b6bd2fb9 | 2489 | fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id); |
bd63eaf4 | 2490 | |
339f4f4e | 2491 | if (!fsf_req) { |
bd63eaf4 SS |
2492 | /* |
2493 | * Unknown request means that we have potentially memory | |
2494 | * corruption and must stop the machine immediately. | |
2495 | */ | |
339f4f4e | 2496 | zfcp_qdio_siosl(adapter); |
bd63eaf4 SS |
2497 | panic("error: unknown req_id (%lx) on adapter %s.\n", |
2498 | req_id, dev_name(&adapter->ccw_device->dev)); | |
339f4f4e | 2499 | } |
bd63eaf4 | 2500 | |
34c2b712 | 2501 | fsf_req->qdio_req.sbal_response = sbal_idx; |
bd63eaf4 SS |
2502 | zfcp_fsf_req_complete(fsf_req); |
2503 | ||
2504 | if (likely(sbale->flags & SBAL_FLAGS_LAST_ENTRY)) | |
2505 | break; | |
2506 | } | |
2507 | } |