Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
553448f6 | 2 | * zfcp device driver |
1da177e4 | 3 | * |
553448f6 | 4 | * Implementation of FSF commands. |
1da177e4 | 5 | * |
a2fa0aed | 6 | * Copyright IBM Corporation 2002, 2009 |
1da177e4 LT |
7 | */ |
8 | ||
ecf39d42 CS |
9 | #define KMSG_COMPONENT "zfcp" |
10 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt | |
11 | ||
0997f1c5 | 12 | #include <linux/blktrace_api.h> |
1da177e4 | 13 | #include "zfcp_ext.h" |
dcd20e23 | 14 | #include "zfcp_dbf.h" |
1da177e4 | 15 | |
287ac01a CS |
16 | static void zfcp_fsf_request_timeout_handler(unsigned long data) |
17 | { | |
18 | struct zfcp_adapter *adapter = (struct zfcp_adapter *) data; | |
5ffd51a5 SS |
19 | zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, |
20 | "fsrth_1", NULL); | |
287ac01a CS |
21 | } |
22 | ||
23 | static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req, | |
24 | unsigned long timeout) | |
25 | { | |
26 | fsf_req->timer.function = zfcp_fsf_request_timeout_handler; | |
27 | fsf_req->timer.data = (unsigned long) fsf_req->adapter; | |
28 | fsf_req->timer.expires = jiffies + timeout; | |
29 | add_timer(&fsf_req->timer); | |
30 | } | |
31 | ||
32 | static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req) | |
33 | { | |
34 | BUG_ON(!fsf_req->erp_action); | |
35 | fsf_req->timer.function = zfcp_erp_timeout_handler; | |
36 | fsf_req->timer.data = (unsigned long) fsf_req->erp_action; | |
37 | fsf_req->timer.expires = jiffies + 30 * HZ; | |
38 | add_timer(&fsf_req->timer); | |
39 | } | |
40 | ||
1da177e4 LT |
41 | /* association between FSF command and FSF QTCB type */ |
42 | static u32 fsf_qtcb_type[] = { | |
43 | [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND, | |
44 | [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND, | |
45 | [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND, | |
46 | [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND, | |
47 | [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND, | |
48 | [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND, | |
49 | [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND, | |
50 | [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND, | |
51 | [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND, | |
52 | [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND, | |
53 | [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND, | |
54 | [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND, | |
55 | [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND | |
56 | }; | |
57 | ||
553448f6 CS |
58 | static void zfcp_act_eval_err(struct zfcp_adapter *adapter, u32 table) |
59 | { | |
c41f8cbd | 60 | u16 subtable = table >> 16; |
553448f6 | 61 | u16 rule = table & 0xffff; |
ff3b24fa | 62 | const char *act_type[] = { "unknown", "OS", "WWPN", "DID", "LUN" }; |
553448f6 | 63 | |
ff3b24fa | 64 | if (subtable && subtable < ARRAY_SIZE(act_type)) |
553448f6 | 65 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
66 | "Access denied according to ACT rule type %s, " |
67 | "rule %d\n", act_type[subtable], rule); | |
553448f6 CS |
68 | } |
69 | ||
70 | static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req, | |
71 | struct zfcp_port *port) | |
72 | { | |
73 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
74 | dev_warn(&req->adapter->ccw_device->dev, | |
ff3b24fa | 75 | "Access denied to port 0x%016Lx\n", |
7ba58c9c | 76 | (unsigned long long)port->wwpn); |
553448f6 CS |
77 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); |
78 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); | |
5ffd51a5 | 79 | zfcp_erp_port_access_denied(port, "fspad_1", req); |
553448f6 CS |
80 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
81 | } | |
82 | ||
83 | static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req *req, | |
84 | struct zfcp_unit *unit) | |
85 | { | |
86 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
87 | dev_warn(&req->adapter->ccw_device->dev, | |
ff3b24fa | 88 | "Access denied to unit 0x%016Lx on port 0x%016Lx\n", |
7ba58c9c SS |
89 | (unsigned long long)unit->fcp_lun, |
90 | (unsigned long long)unit->port->wwpn); | |
553448f6 CS |
91 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); |
92 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); | |
5ffd51a5 | 93 | zfcp_erp_unit_access_denied(unit, "fsuad_1", req); |
553448f6 CS |
94 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
95 | } | |
96 | ||
97 | static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req) | |
98 | { | |
ff3b24fa CS |
99 | dev_err(&req->adapter->ccw_device->dev, "FCP device not " |
100 | "operational because of an unsupported FC class\n"); | |
5ffd51a5 | 101 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fscns_1", req); |
553448f6 CS |
102 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
103 | } | |
104 | ||
c41f8cbd SS |
105 | /** |
106 | * zfcp_fsf_req_free - free memory used by fsf request | |
107 | * @fsf_req: pointer to struct zfcp_fsf_req | |
1da177e4 | 108 | */ |
c41f8cbd | 109 | void zfcp_fsf_req_free(struct zfcp_fsf_req *req) |
1da177e4 | 110 | { |
c41f8cbd | 111 | if (likely(req->pool)) { |
a4623c46 SS |
112 | if (likely(req->qtcb)) |
113 | mempool_free(req->qtcb, req->adapter->pool.qtcb_pool); | |
c41f8cbd | 114 | mempool_free(req, req->pool); |
dd52e0ea HC |
115 | return; |
116 | } | |
117 | ||
a4623c46 SS |
118 | if (likely(req->qtcb)) |
119 | kmem_cache_free(zfcp_data.qtcb_cache, req->qtcb); | |
120 | kfree(req); | |
1da177e4 LT |
121 | } |
122 | ||
c41f8cbd | 123 | static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req) |
1da177e4 | 124 | { |
ecf0c772 | 125 | unsigned long flags; |
c41f8cbd SS |
126 | struct fsf_status_read_buffer *sr_buf = req->data; |
127 | struct zfcp_adapter *adapter = req->adapter; | |
128 | struct zfcp_port *port; | |
129 | int d_id = sr_buf->d_id & ZFCP_DID_MASK; | |
1da177e4 | 130 | |
ecf0c772 SS |
131 | read_lock_irqsave(&adapter->port_list_lock, flags); |
132 | list_for_each_entry(port, &adapter->port_list, list) | |
c41f8cbd | 133 | if (port->d_id == d_id) { |
5ffd51a5 | 134 | zfcp_erp_port_reopen(port, 0, "fssrpc1", req); |
ecf0c772 | 135 | break; |
c41f8cbd | 136 | } |
ecf0c772 | 137 | read_unlock_irqrestore(&adapter->port_list_lock, flags); |
1da177e4 LT |
138 | } |
139 | ||
5ffd51a5 | 140 | static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, char *id, |
c41f8cbd | 141 | struct fsf_link_down_info *link_down) |
aef4a983 | 142 | { |
c41f8cbd | 143 | struct zfcp_adapter *adapter = req->adapter; |
698ec016 | 144 | |
c41f8cbd | 145 | if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED) |
ee69ab7a MS |
146 | return; |
147 | ||
148 | atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status); | |
70932935 | 149 | |
a2fa0aed | 150 | zfcp_scsi_schedule_rports_block(adapter); |
ee69ab7a | 151 | |
c41f8cbd | 152 | if (!link_down) |
2f8f3ed5 | 153 | goto out; |
ee69ab7a | 154 | |
aef4a983 MS |
155 | switch (link_down->error_code) { |
156 | case FSF_PSQ_LINK_NO_LIGHT: | |
c41f8cbd | 157 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
158 | "There is no light signal from the local " |
159 | "fibre channel cable\n"); | |
aef4a983 MS |
160 | break; |
161 | case FSF_PSQ_LINK_WRAP_PLUG: | |
c41f8cbd | 162 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
163 | "There is a wrap plug instead of a fibre " |
164 | "channel cable\n"); | |
aef4a983 MS |
165 | break; |
166 | case FSF_PSQ_LINK_NO_FCP: | |
c41f8cbd | 167 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
168 | "The adjacent fibre channel node does not " |
169 | "support FCP\n"); | |
aef4a983 MS |
170 | break; |
171 | case FSF_PSQ_LINK_FIRMWARE_UPDATE: | |
c41f8cbd | 172 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
173 | "The FCP device is suspended because of a " |
174 | "firmware update\n"); | |
553448f6 | 175 | break; |
aef4a983 | 176 | case FSF_PSQ_LINK_INVALID_WWPN: |
c41f8cbd | 177 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
178 | "The FCP device detected a WWPN that is " |
179 | "duplicate or not valid\n"); | |
aef4a983 MS |
180 | break; |
181 | case FSF_PSQ_LINK_NO_NPIV_SUPPORT: | |
c41f8cbd | 182 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 183 | "The fibre channel fabric does not support NPIV\n"); |
aef4a983 MS |
184 | break; |
185 | case FSF_PSQ_LINK_NO_FCP_RESOURCES: | |
c41f8cbd | 186 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 187 | "The FCP adapter cannot support more NPIV ports\n"); |
aef4a983 MS |
188 | break; |
189 | case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: | |
c41f8cbd | 190 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
191 | "The adjacent switch cannot support " |
192 | "more NPIV ports\n"); | |
aef4a983 MS |
193 | break; |
194 | case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: | |
c41f8cbd | 195 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
196 | "The FCP adapter could not log in to the " |
197 | "fibre channel fabric\n"); | |
aef4a983 MS |
198 | break; |
199 | case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: | |
c41f8cbd | 200 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
201 | "The WWPN assignment file on the FCP adapter " |
202 | "has been damaged\n"); | |
aef4a983 MS |
203 | break; |
204 | case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: | |
c41f8cbd | 205 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
206 | "The mode table on the FCP adapter " |
207 | "has been damaged\n"); | |
aef4a983 MS |
208 | break; |
209 | case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: | |
c41f8cbd | 210 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
211 | "All NPIV ports on the FCP adapter have " |
212 | "been assigned\n"); | |
aef4a983 MS |
213 | break; |
214 | default: | |
c41f8cbd | 215 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
216 | "The link between the FCP adapter and " |
217 | "the FC fabric is down\n"); | |
aef4a983 | 218 | } |
c41f8cbd SS |
219 | out: |
220 | zfcp_erp_adapter_failed(adapter, id, req); | |
aef4a983 MS |
221 | } |
222 | ||
c41f8cbd | 223 | static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req) |
1da177e4 | 224 | { |
c41f8cbd SS |
225 | struct fsf_status_read_buffer *sr_buf = req->data; |
226 | struct fsf_link_down_info *ldi = | |
227 | (struct fsf_link_down_info *) &sr_buf->payload; | |
1da177e4 | 228 | |
c41f8cbd SS |
229 | switch (sr_buf->status_subtype) { |
230 | case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: | |
5ffd51a5 | 231 | zfcp_fsf_link_down_info_eval(req, "fssrld1", ldi); |
1da177e4 | 232 | break; |
c41f8cbd | 233 | case FSF_STATUS_READ_SUB_FDISC_FAILED: |
5ffd51a5 | 234 | zfcp_fsf_link_down_info_eval(req, "fssrld2", ldi); |
1da177e4 | 235 | break; |
c41f8cbd | 236 | case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE: |
5ffd51a5 | 237 | zfcp_fsf_link_down_info_eval(req, "fssrld3", NULL); |
c41f8cbd SS |
238 | }; |
239 | } | |
1da177e4 | 240 | |
c41f8cbd SS |
241 | static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) |
242 | { | |
243 | struct zfcp_adapter *adapter = req->adapter; | |
244 | struct fsf_status_read_buffer *sr_buf = req->data; | |
1da177e4 | 245 | |
c41f8cbd | 246 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
5771710b | 247 | zfcp_dbf_hba_fsf_unsol("dism", adapter->dbf, sr_buf); |
a4623c46 | 248 | mempool_free(sr_buf, adapter->pool.status_read_data); |
c41f8cbd SS |
249 | zfcp_fsf_req_free(req); |
250 | return; | |
251 | } | |
1da177e4 | 252 | |
5771710b | 253 | zfcp_dbf_hba_fsf_unsol("read", adapter->dbf, sr_buf); |
1da177e4 | 254 | |
c41f8cbd SS |
255 | switch (sr_buf->status_type) { |
256 | case FSF_STATUS_READ_PORT_CLOSED: | |
257 | zfcp_fsf_status_read_port_closed(req); | |
1da177e4 | 258 | break; |
c41f8cbd SS |
259 | case FSF_STATUS_READ_INCOMING_ELS: |
260 | zfcp_fc_incoming_els(req); | |
1da177e4 | 261 | break; |
c41f8cbd | 262 | case FSF_STATUS_READ_SENSE_DATA_AVAIL: |
1da177e4 | 263 | break; |
c41f8cbd | 264 | case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: |
ff3b24fa CS |
265 | dev_warn(&adapter->ccw_device->dev, |
266 | "The error threshold for checksum statistics " | |
267 | "has been exceeded\n"); | |
5771710b | 268 | zfcp_dbf_hba_berr(adapter->dbf, req); |
1da177e4 | 269 | break; |
c41f8cbd SS |
270 | case FSF_STATUS_READ_LINK_DOWN: |
271 | zfcp_fsf_status_read_link_down(req); | |
272 | break; | |
273 | case FSF_STATUS_READ_LINK_UP: | |
274 | dev_info(&adapter->ccw_device->dev, | |
ff3b24fa | 275 | "The local link has been restored\n"); |
c41f8cbd | 276 | /* All ports should be marked as ready to run again */ |
5ffd51a5 | 277 | zfcp_erp_modify_adapter_status(adapter, "fssrh_1", NULL, |
c41f8cbd SS |
278 | ZFCP_STATUS_COMMON_RUNNING, |
279 | ZFCP_SET); | |
280 | zfcp_erp_adapter_reopen(adapter, | |
281 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
282 | ZFCP_STATUS_COMMON_ERP_FAILED, | |
5ffd51a5 | 283 | "fssrh_2", req); |
c41f8cbd SS |
284 | break; |
285 | case FSF_STATUS_READ_NOTIFICATION_LOST: | |
286 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED) | |
5ffd51a5 SS |
287 | zfcp_erp_adapter_access_changed(adapter, "fssrh_3", |
288 | req); | |
c41f8cbd SS |
289 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS) |
290 | schedule_work(&adapter->scan_work); | |
291 | break; | |
292 | case FSF_STATUS_READ_CFDC_UPDATED: | |
5ffd51a5 | 293 | zfcp_erp_adapter_access_changed(adapter, "fssrh_4", req); |
c41f8cbd SS |
294 | break; |
295 | case FSF_STATUS_READ_FEATURE_UPDATE_ALERT: | |
296 | adapter->adapter_features = sr_buf->payload.word[0]; | |
1da177e4 | 297 | break; |
1da177e4 LT |
298 | } |
299 | ||
a4623c46 | 300 | mempool_free(sr_buf, adapter->pool.status_read_data); |
c41f8cbd | 301 | zfcp_fsf_req_free(req); |
1da177e4 | 302 | |
c41f8cbd | 303 | atomic_inc(&adapter->stat_miss); |
4544683a | 304 | queue_work(adapter->work_queue, &adapter->stat_work); |
c41f8cbd | 305 | } |
1da177e4 | 306 | |
c41f8cbd SS |
307 | static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req) |
308 | { | |
309 | switch (req->qtcb->header.fsf_status_qual.word[0]) { | |
310 | case FSF_SQ_FCP_RSP_AVAILABLE: | |
311 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
312 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
313 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
314 | return; | |
315 | case FSF_SQ_COMMAND_ABORTED: | |
316 | req->status |= ZFCP_STATUS_FSFREQ_ABORTED; | |
317 | break; | |
318 | case FSF_SQ_NO_RECOM: | |
319 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
320 | "The FCP adapter reported a problem " |
321 | "that cannot be recovered\n"); | |
5ffd51a5 | 322 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1", req); |
c41f8cbd SS |
323 | break; |
324 | } | |
325 | /* all non-return stats set FSFREQ_ERROR*/ | |
326 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
327 | } |
328 | ||
c41f8cbd | 329 | static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req) |
1da177e4 | 330 | { |
c41f8cbd SS |
331 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
332 | return; | |
1da177e4 | 333 | |
c41f8cbd SS |
334 | switch (req->qtcb->header.fsf_status) { |
335 | case FSF_UNKNOWN_COMMAND: | |
336 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa | 337 | "The FCP adapter does not recognize the command 0x%x\n", |
c41f8cbd | 338 | req->qtcb->header.fsf_command); |
5ffd51a5 | 339 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1", req); |
c41f8cbd SS |
340 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
341 | break; | |
342 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
343 | zfcp_fsf_fsfstatus_qual_eval(req); | |
344 | break; | |
345 | } | |
346 | } | |
1da177e4 | 347 | |
c41f8cbd SS |
348 | static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) |
349 | { | |
350 | struct zfcp_adapter *adapter = req->adapter; | |
351 | struct fsf_qtcb *qtcb = req->qtcb; | |
352 | union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual; | |
1da177e4 | 353 | |
5771710b | 354 | zfcp_dbf_hba_fsf_response(req); |
1da177e4 | 355 | |
c41f8cbd SS |
356 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
357 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
358 | ZFCP_STATUS_FSFREQ_RETRY; /* only for SCSI cmnds. */ | |
359 | return; | |
360 | } | |
1da177e4 | 361 | |
c41f8cbd SS |
362 | switch (qtcb->prefix.prot_status) { |
363 | case FSF_PROT_GOOD: | |
364 | case FSF_PROT_FSF_STATUS_PRESENTED: | |
365 | return; | |
366 | case FSF_PROT_QTCB_VERSION_ERROR: | |
367 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
368 | "QTCB version 0x%x not supported by FCP adapter " |
369 | "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION, | |
370 | psq->word[0], psq->word[1]); | |
5ffd51a5 | 371 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1", req); |
c41f8cbd SS |
372 | break; |
373 | case FSF_PROT_ERROR_STATE: | |
374 | case FSF_PROT_SEQ_NUMB_ERROR: | |
5ffd51a5 | 375 | zfcp_erp_adapter_reopen(adapter, 0, "fspse_2", req); |
c41f8cbd SS |
376 | req->status |= ZFCP_STATUS_FSFREQ_RETRY; |
377 | break; | |
378 | case FSF_PROT_UNSUPP_QTCB_TYPE: | |
379 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 380 | "The QTCB type is not supported by the FCP adapter\n"); |
5ffd51a5 | 381 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3", req); |
c41f8cbd SS |
382 | break; |
383 | case FSF_PROT_HOST_CONNECTION_INITIALIZING: | |
384 | atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT, | |
385 | &adapter->status); | |
386 | break; | |
387 | case FSF_PROT_DUPLICATE_REQUEST_ID: | |
388 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 389 | "0x%Lx is an ambiguous request identifier\n", |
c41f8cbd | 390 | (unsigned long long)qtcb->bottom.support.req_handle); |
5ffd51a5 | 391 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_4", req); |
c41f8cbd SS |
392 | break; |
393 | case FSF_PROT_LINK_DOWN: | |
5ffd51a5 SS |
394 | zfcp_fsf_link_down_info_eval(req, "fspse_5", |
395 | &psq->link_down_info); | |
c41f8cbd | 396 | /* FIXME: reopening adapter now? better wait for link up */ |
5ffd51a5 | 397 | zfcp_erp_adapter_reopen(adapter, 0, "fspse_6", req); |
c41f8cbd SS |
398 | break; |
399 | case FSF_PROT_REEST_QUEUE: | |
400 | /* All ports should be marked as ready to run again */ | |
5ffd51a5 | 401 | zfcp_erp_modify_adapter_status(adapter, "fspse_7", NULL, |
c41f8cbd SS |
402 | ZFCP_STATUS_COMMON_RUNNING, |
403 | ZFCP_SET); | |
404 | zfcp_erp_adapter_reopen(adapter, | |
405 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
5ffd51a5 SS |
406 | ZFCP_STATUS_COMMON_ERP_FAILED, |
407 | "fspse_8", req); | |
c41f8cbd SS |
408 | break; |
409 | default: | |
410 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 411 | "0x%x is not a valid transfer protocol status\n", |
c41f8cbd | 412 | qtcb->prefix.prot_status); |
5ffd51a5 | 413 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9", req); |
c41f8cbd SS |
414 | } |
415 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
416 | } |
417 | ||
c41f8cbd SS |
418 | /** |
419 | * zfcp_fsf_req_complete - process completion of a FSF request | |
420 | * @fsf_req: The FSF request that has been completed. | |
421 | * | |
422 | * When a request has been completed either from the FCP adapter, | |
423 | * or it has been dismissed due to a queue shutdown, this function | |
424 | * is called to process the completion status and trigger further | |
425 | * events related to the FSF request. | |
426 | */ | |
bd63eaf4 | 427 | static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req) |
1da177e4 | 428 | { |
c41f8cbd SS |
429 | if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) { |
430 | zfcp_fsf_status_read_handler(req); | |
431 | return; | |
432 | } | |
1da177e4 | 433 | |
c41f8cbd SS |
434 | del_timer(&req->timer); |
435 | zfcp_fsf_protstatus_eval(req); | |
436 | zfcp_fsf_fsfstatus_eval(req); | |
437 | req->handler(req); | |
1da177e4 | 438 | |
c41f8cbd | 439 | if (req->erp_action) |
287ac01a | 440 | zfcp_erp_notify(req->erp_action, 0); |
1da177e4 | 441 | |
c41f8cbd SS |
442 | if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP)) |
443 | zfcp_fsf_req_free(req); | |
444 | else | |
058b8647 | 445 | complete(&req->completion); |
c41f8cbd | 446 | } |
1da177e4 | 447 | |
bd63eaf4 SS |
448 | /** |
449 | * zfcp_fsf_req_dismiss_all - dismiss all fsf requests | |
450 | * @adapter: pointer to struct zfcp_adapter | |
451 | * | |
452 | * Never ever call this without shutting down the adapter first. | |
453 | * Otherwise the adapter would continue using and corrupting s390 storage. | |
454 | * Included BUG_ON() call to ensure this is done. | |
455 | * ERP is supposed to be the only user of this function. | |
456 | */ | |
457 | void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter) | |
458 | { | |
459 | struct zfcp_fsf_req *req, *tmp; | |
460 | unsigned long flags; | |
461 | LIST_HEAD(remove_queue); | |
462 | unsigned int i; | |
463 | ||
464 | BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP); | |
465 | spin_lock_irqsave(&adapter->req_list_lock, flags); | |
466 | for (i = 0; i < REQUEST_LIST_SIZE; i++) | |
467 | list_splice_init(&adapter->req_list[i], &remove_queue); | |
468 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); | |
469 | ||
470 | list_for_each_entry_safe(req, tmp, &remove_queue, list) { | |
471 | list_del(&req->list); | |
472 | req->status |= ZFCP_STATUS_FSFREQ_DISMISSED; | |
473 | zfcp_fsf_req_complete(req); | |
474 | } | |
475 | } | |
476 | ||
c41f8cbd SS |
477 | static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req) |
478 | { | |
479 | struct fsf_qtcb_bottom_config *bottom; | |
480 | struct zfcp_adapter *adapter = req->adapter; | |
481 | struct Scsi_Host *shost = adapter->scsi_host; | |
1da177e4 | 482 | |
c41f8cbd | 483 | bottom = &req->qtcb->bottom.config; |
1da177e4 | 484 | |
c41f8cbd SS |
485 | if (req->data) |
486 | memcpy(req->data, bottom, sizeof(*bottom)); | |
487 | ||
488 | fc_host_node_name(shost) = bottom->nport_serv_param.wwnn; | |
489 | fc_host_port_name(shost) = bottom->nport_serv_param.wwpn; | |
490 | fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK; | |
491 | fc_host_speed(shost) = bottom->fc_link_speed; | |
492 | fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3; | |
493 | ||
494 | adapter->hydra_version = bottom->adapter_type; | |
495 | adapter->timer_ticks = bottom->timer_interval; | |
496 | ||
497 | if (fc_host_permanent_port_name(shost) == -1) | |
498 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
499 | ||
500 | switch (bottom->fc_topology) { | |
501 | case FSF_TOPO_P2P: | |
502 | adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK; | |
503 | adapter->peer_wwpn = bottom->plogi_payload.wwpn; | |
504 | adapter->peer_wwnn = bottom->plogi_payload.wwnn; | |
505 | fc_host_port_type(shost) = FC_PORTTYPE_PTP; | |
c41f8cbd SS |
506 | break; |
507 | case FSF_TOPO_FABRIC: | |
508 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
c41f8cbd SS |
509 | break; |
510 | case FSF_TOPO_AL: | |
511 | fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; | |
dceab655 | 512 | /* fall through */ |
c41f8cbd | 513 | default: |
c41f8cbd | 514 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
515 | "Unknown or unsupported arbitrated loop " |
516 | "fibre channel topology detected\n"); | |
5ffd51a5 | 517 | zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1", req); |
c41f8cbd | 518 | return -EIO; |
1da177e4 | 519 | } |
c41f8cbd | 520 | |
1da177e4 LT |
521 | return 0; |
522 | } | |
523 | ||
c41f8cbd | 524 | static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) |
553448f6 CS |
525 | { |
526 | struct zfcp_adapter *adapter = req->adapter; | |
c41f8cbd SS |
527 | struct fsf_qtcb *qtcb = req->qtcb; |
528 | struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config; | |
529 | struct Scsi_Host *shost = adapter->scsi_host; | |
553448f6 | 530 | |
c41f8cbd SS |
531 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
532 | return; | |
1da177e4 | 533 | |
c41f8cbd SS |
534 | adapter->fsf_lic_version = bottom->lic_version; |
535 | adapter->adapter_features = bottom->adapter_features; | |
536 | adapter->connection_features = bottom->connection_features; | |
537 | adapter->peer_wwpn = 0; | |
538 | adapter->peer_wwnn = 0; | |
539 | adapter->peer_d_id = 0; | |
8a36e453 | 540 | |
c41f8cbd SS |
541 | switch (qtcb->header.fsf_status) { |
542 | case FSF_GOOD: | |
543 | if (zfcp_fsf_exchange_config_evaluate(req)) | |
544 | return; | |
1da177e4 | 545 | |
c41f8cbd SS |
546 | if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { |
547 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
548 | "FCP adapter maximum QTCB size (%d bytes) " |
549 | "is too small\n", | |
550 | bottom->max_qtcb_size); | |
5ffd51a5 | 551 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1", req); |
c41f8cbd SS |
552 | return; |
553 | } | |
554 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, | |
555 | &adapter->status); | |
1da177e4 | 556 | break; |
c41f8cbd SS |
557 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
558 | fc_host_node_name(shost) = 0; | |
559 | fc_host_port_name(shost) = 0; | |
560 | fc_host_port_id(shost) = 0; | |
561 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; | |
562 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; | |
563 | adapter->hydra_version = 0; | |
1da177e4 | 564 | |
c41f8cbd SS |
565 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, |
566 | &adapter->status); | |
1da177e4 | 567 | |
5ffd51a5 | 568 | zfcp_fsf_link_down_info_eval(req, "fsecdh2", |
c41f8cbd | 569 | &qtcb->header.fsf_status_qual.link_down_info); |
1da177e4 | 570 | break; |
c41f8cbd | 571 | default: |
5ffd51a5 | 572 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3", req); |
c41f8cbd SS |
573 | return; |
574 | } | |
1da177e4 | 575 | |
c41f8cbd SS |
576 | if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) { |
577 | adapter->hardware_version = bottom->hardware_version; | |
578 | memcpy(fc_host_serial_number(shost), bottom->serial_number, | |
579 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
580 | EBCASC(fc_host_serial_number(shost), | |
581 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
582 | } | |
1da177e4 | 583 | |
c41f8cbd SS |
584 | if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) { |
585 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
586 | "The FCP adapter only supports newer " |
587 | "control block versions\n"); | |
5ffd51a5 | 588 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4", req); |
c41f8cbd SS |
589 | return; |
590 | } | |
591 | if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) { | |
592 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
593 | "The FCP adapter only supports older " |
594 | "control block versions\n"); | |
5ffd51a5 | 595 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5", req); |
c41f8cbd SS |
596 | } |
597 | } | |
1da177e4 | 598 | |
c41f8cbd SS |
599 | static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req) |
600 | { | |
601 | struct zfcp_adapter *adapter = req->adapter; | |
602 | struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port; | |
603 | struct Scsi_Host *shost = adapter->scsi_host; | |
1da177e4 | 604 | |
c41f8cbd SS |
605 | if (req->data) |
606 | memcpy(req->data, bottom, sizeof(*bottom)); | |
9eb69aff | 607 | |
0282985d | 608 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) { |
c41f8cbd | 609 | fc_host_permanent_port_name(shost) = bottom->wwpn; |
0282985d CS |
610 | fc_host_port_type(shost) = FC_PORTTYPE_NPIV; |
611 | } else | |
c41f8cbd SS |
612 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); |
613 | fc_host_maxframe_size(shost) = bottom->maximum_frame_size; | |
614 | fc_host_supported_speeds(shost) = bottom->supported_speed; | |
615 | } | |
1da177e4 | 616 | |
c41f8cbd SS |
617 | static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) |
618 | { | |
c41f8cbd SS |
619 | struct fsf_qtcb *qtcb = req->qtcb; |
620 | ||
621 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
622 | return; | |
623 | ||
624 | switch (qtcb->header.fsf_status) { | |
625 | case FSF_GOOD: | |
626 | zfcp_fsf_exchange_port_evaluate(req); | |
c41f8cbd SS |
627 | break; |
628 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: | |
629 | zfcp_fsf_exchange_port_evaluate(req); | |
5ffd51a5 | 630 | zfcp_fsf_link_down_info_eval(req, "fsepdh1", |
c41f8cbd | 631 | &qtcb->header.fsf_status_qual.link_down_info); |
aef4a983 | 632 | break; |
1da177e4 | 633 | } |
c41f8cbd | 634 | } |
d26ab06e | 635 | |
564e1c86 | 636 | static int zfcp_fsf_sbal_check(struct zfcp_qdio *qdio) |
c41f8cbd | 637 | { |
564e1c86 | 638 | struct zfcp_qdio_queue *req_q = &qdio->req_q; |
c41f8cbd | 639 | |
564e1c86 | 640 | spin_lock_bh(&qdio->req_q_lock); |
7001f0c4 MP |
641 | if (atomic_read(&req_q->count)) |
642 | return 1; | |
564e1c86 | 643 | spin_unlock_bh(&qdio->req_q_lock); |
7001f0c4 MP |
644 | return 0; |
645 | } | |
646 | ||
564e1c86 | 647 | static int zfcp_fsf_req_sbal_get(struct zfcp_qdio *qdio) |
7001f0c4 | 648 | { |
564e1c86 | 649 | struct zfcp_adapter *adapter = qdio->adapter; |
7001f0c4 | 650 | long ret; |
dedbc2b3 | 651 | |
564e1c86 SS |
652 | spin_unlock_bh(&qdio->req_q_lock); |
653 | ret = wait_event_interruptible_timeout(qdio->req_q_wq, | |
654 | zfcp_fsf_sbal_check(qdio), 5 * HZ); | |
c41f8cbd SS |
655 | if (ret > 0) |
656 | return 0; | |
cbf1ed02 | 657 | if (!ret) { |
564e1c86 | 658 | atomic_inc(&qdio->req_q_full); |
cbf1ed02 CS |
659 | /* assume hanging outbound queue, try queue recovery */ |
660 | zfcp_erp_adapter_reopen(adapter, 0, "fsrsg_1", NULL); | |
661 | } | |
7001f0c4 | 662 | |
564e1c86 | 663 | spin_lock_bh(&qdio->req_q_lock); |
c41f8cbd SS |
664 | return -EIO; |
665 | } | |
666 | ||
a4623c46 | 667 | static struct zfcp_fsf_req *zfcp_fsf_alloc(mempool_t *pool) |
c41f8cbd SS |
668 | { |
669 | struct zfcp_fsf_req *req; | |
a4623c46 SS |
670 | |
671 | if (likely(pool)) | |
672 | req = mempool_alloc(pool, GFP_ATOMIC); | |
673 | else | |
674 | req = kmalloc(sizeof(*req), GFP_ATOMIC); | |
675 | ||
676 | if (unlikely(!req)) | |
c41f8cbd | 677 | return NULL; |
a4623c46 | 678 | |
c41f8cbd | 679 | memset(req, 0, sizeof(*req)); |
88f2a977 | 680 | req->pool = pool; |
c41f8cbd SS |
681 | return req; |
682 | } | |
683 | ||
a4623c46 | 684 | static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool) |
c41f8cbd | 685 | { |
a4623c46 | 686 | struct fsf_qtcb *qtcb; |
c41f8cbd SS |
687 | |
688 | if (likely(pool)) | |
689 | qtcb = mempool_alloc(pool, GFP_ATOMIC); | |
690 | else | |
a4623c46 SS |
691 | qtcb = kmem_cache_alloc(zfcp_data.qtcb_cache, GFP_ATOMIC); |
692 | ||
c41f8cbd SS |
693 | if (unlikely(!qtcb)) |
694 | return NULL; | |
695 | ||
696 | memset(qtcb, 0, sizeof(*qtcb)); | |
a4623c46 | 697 | return qtcb; |
c41f8cbd SS |
698 | } |
699 | ||
564e1c86 | 700 | static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio, |
09a46c6e | 701 | u32 fsf_cmd, mempool_t *pool) |
1da177e4 | 702 | { |
44cc76f2 | 703 | struct qdio_buffer_element *sbale; |
564e1c86 SS |
704 | struct zfcp_qdio_queue *req_q = &qdio->req_q; |
705 | struct zfcp_adapter *adapter = qdio->adapter; | |
a4623c46 | 706 | struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool); |
1da177e4 | 707 | |
c41f8cbd | 708 | if (unlikely(!req)) |
1e9b1643 | 709 | return ERR_PTR(-ENOMEM); |
1da177e4 | 710 | |
c41f8cbd SS |
711 | if (adapter->req_no == 0) |
712 | adapter->req_no++; | |
1da177e4 | 713 | |
c41f8cbd SS |
714 | INIT_LIST_HEAD(&req->list); |
715 | init_timer(&req->timer); | |
058b8647 | 716 | init_completion(&req->completion); |
1da177e4 | 717 | |
c41f8cbd SS |
718 | req->adapter = adapter; |
719 | req->fsf_command = fsf_cmd; | |
52bfb558 | 720 | req->req_id = adapter->req_no; |
42428f74 SS |
721 | req->queue_req.sbal_number = 1; |
722 | req->queue_req.sbal_first = req_q->first; | |
723 | req->queue_req.sbal_last = req_q->first; | |
724 | req->queue_req.sbale_curr = 1; | |
c41f8cbd | 725 | |
564e1c86 | 726 | sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); |
c41f8cbd SS |
727 | sbale[0].addr = (void *) req->req_id; |
728 | sbale[0].flags |= SBAL_FLAGS0_COMMAND; | |
729 | ||
a4623c46 SS |
730 | if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) { |
731 | if (likely(pool)) | |
732 | req->qtcb = zfcp_qtcb_alloc(adapter->pool.qtcb_pool); | |
733 | else | |
734 | req->qtcb = zfcp_qtcb_alloc(NULL); | |
735 | ||
736 | if (unlikely(!req->qtcb)) { | |
737 | zfcp_fsf_req_free(req); | |
738 | return ERR_PTR(-ENOMEM); | |
739 | } | |
740 | ||
564e1c86 | 741 | req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; |
c41f8cbd SS |
742 | req->qtcb->prefix.req_id = req->req_id; |
743 | req->qtcb->prefix.ulp_info = 26; | |
744 | req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command]; | |
745 | req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION; | |
746 | req->qtcb->header.req_handle = req->req_id; | |
747 | req->qtcb->header.fsf_command = req->fsf_command; | |
748 | req->seq_no = adapter->fsf_req_seq_no; | |
749 | req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; | |
750 | sbale[1].addr = (void *) req->qtcb; | |
751 | sbale[1].length = sizeof(struct fsf_qtcb); | |
752 | } | |
753 | ||
754 | if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) { | |
755 | zfcp_fsf_req_free(req); | |
756 | return ERR_PTR(-EIO); | |
757 | } | |
951f746f | 758 | |
c41f8cbd | 759 | return req; |
1da177e4 LT |
760 | } |
761 | ||
c41f8cbd SS |
762 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) |
763 | { | |
764 | struct zfcp_adapter *adapter = req->adapter; | |
564e1c86 | 765 | struct zfcp_qdio *qdio = adapter->qdio; |
135ea137 MP |
766 | unsigned long flags; |
767 | int idx; | |
768 | int with_qtcb = (req->qtcb != NULL); | |
c41f8cbd SS |
769 | |
770 | /* put allocated FSF request into hash table */ | |
45316a86 | 771 | spin_lock_irqsave(&adapter->req_list_lock, flags); |
c41f8cbd SS |
772 | idx = zfcp_reqlist_hash(req->req_id); |
773 | list_add_tail(&req->list, &adapter->req_list[idx]); | |
45316a86 | 774 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); |
c41f8cbd | 775 | |
564e1c86 | 776 | req->queue_req.qdio_outb_usage = atomic_read(&qdio->req_q.count); |
c41f8cbd | 777 | req->issued = get_clock(); |
564e1c86 | 778 | if (zfcp_qdio_send(qdio, &req->queue_req)) { |
c41f8cbd | 779 | del_timer(&req->timer); |
3765138a CS |
780 | spin_lock_irqsave(&adapter->req_list_lock, flags); |
781 | /* lookup request again, list might have changed */ | |
782 | if (zfcp_reqlist_find_safe(adapter, req)) | |
783 | zfcp_reqlist_remove(adapter, req); | |
784 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); | |
5ffd51a5 | 785 | zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1", req); |
c41f8cbd SS |
786 | return -EIO; |
787 | } | |
788 | ||
789 | /* Don't increase for unsolicited status */ | |
135ea137 | 790 | if (with_qtcb) |
c41f8cbd | 791 | adapter->fsf_req_seq_no++; |
52bfb558 | 792 | adapter->req_no++; |
c41f8cbd SS |
793 | |
794 | return 0; | |
795 | } | |
796 | ||
797 | /** | |
798 | * zfcp_fsf_status_read - send status read request | |
799 | * @adapter: pointer to struct zfcp_adapter | |
800 | * @req_flags: request flags | |
801 | * Returns: 0 on success, ERROR otherwise | |
1da177e4 | 802 | */ |
564e1c86 | 803 | int zfcp_fsf_status_read(struct zfcp_qdio *qdio) |
1da177e4 | 804 | { |
564e1c86 | 805 | struct zfcp_adapter *adapter = qdio->adapter; |
c41f8cbd SS |
806 | struct zfcp_fsf_req *req; |
807 | struct fsf_status_read_buffer *sr_buf; | |
44cc76f2 | 808 | struct qdio_buffer_element *sbale; |
c41f8cbd | 809 | int retval = -EIO; |
1da177e4 | 810 | |
564e1c86 SS |
811 | spin_lock_bh(&qdio->req_q_lock); |
812 | if (zfcp_fsf_req_sbal_get(qdio)) | |
c41f8cbd SS |
813 | goto out; |
814 | ||
564e1c86 | 815 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS, |
a4623c46 | 816 | adapter->pool.status_read_req); |
025270f0 | 817 | if (IS_ERR(req)) { |
c41f8cbd SS |
818 | retval = PTR_ERR(req); |
819 | goto out; | |
1da177e4 LT |
820 | } |
821 | ||
564e1c86 | 822 | sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); |
c41f8cbd | 823 | sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY; |
42428f74 | 824 | req->queue_req.sbale_curr = 2; |
c41f8cbd | 825 | |
a4623c46 | 826 | sr_buf = mempool_alloc(adapter->pool.status_read_data, GFP_ATOMIC); |
c41f8cbd SS |
827 | if (!sr_buf) { |
828 | retval = -ENOMEM; | |
829 | goto failed_buf; | |
830 | } | |
831 | memset(sr_buf, 0, sizeof(*sr_buf)); | |
832 | req->data = sr_buf; | |
564e1c86 | 833 | sbale = zfcp_qdio_sbale_curr(qdio, &req->queue_req); |
c41f8cbd SS |
834 | sbale->addr = (void *) sr_buf; |
835 | sbale->length = sizeof(*sr_buf); | |
059c97d0 | 836 | |
c41f8cbd SS |
837 | retval = zfcp_fsf_req_send(req); |
838 | if (retval) | |
839 | goto failed_req_send; | |
1da177e4 | 840 | |
c41f8cbd SS |
841 | goto out; |
842 | ||
843 | failed_req_send: | |
a4623c46 | 844 | mempool_free(sr_buf, adapter->pool.status_read_data); |
c41f8cbd SS |
845 | failed_buf: |
846 | zfcp_fsf_req_free(req); | |
5771710b | 847 | zfcp_dbf_hba_fsf_unsol("fail", adapter->dbf, NULL); |
c41f8cbd | 848 | out: |
564e1c86 | 849 | spin_unlock_bh(&qdio->req_q_lock); |
c41f8cbd SS |
850 | return retval; |
851 | } | |
852 | ||
853 | static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req) | |
854 | { | |
855 | struct zfcp_unit *unit = req->data; | |
856 | union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual; | |
857 | ||
858 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
859 | return; | |
860 | ||
861 | switch (req->qtcb->header.fsf_status) { | |
1da177e4 | 862 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd | 863 | if (fsq->word[0] == fsq->word[1]) { |
5ffd51a5 SS |
864 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, |
865 | "fsafch1", req); | |
c41f8cbd | 866 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
867 | } |
868 | break; | |
1da177e4 | 869 | case FSF_LUN_HANDLE_NOT_VALID: |
c41f8cbd | 870 | if (fsq->word[0] == fsq->word[1]) { |
5ffd51a5 | 871 | zfcp_erp_port_reopen(unit->port, 0, "fsafch2", req); |
c41f8cbd | 872 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
873 | } |
874 | break; | |
1da177e4 | 875 | case FSF_FCP_COMMAND_DOES_NOT_EXIST: |
c41f8cbd | 876 | req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED; |
1da177e4 | 877 | break; |
1da177e4 | 878 | case FSF_PORT_BOXED: |
5ffd51a5 | 879 | zfcp_erp_port_boxed(unit->port, "fsafch3", req); |
c41f8cbd SS |
880 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
881 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 882 | break; |
1da177e4 | 883 | case FSF_LUN_BOXED: |
5ffd51a5 | 884 | zfcp_erp_unit_boxed(unit, "fsafch4", req); |
c41f8cbd SS |
885 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
886 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 887 | break; |
1da177e4 | 888 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 889 | switch (fsq->word[0]) { |
1da177e4 | 890 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
6f53a2d2 | 891 | zfcp_fc_test_link(unit->port); |
dceab655 | 892 | /* fall through */ |
1da177e4 | 893 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 894 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 895 | break; |
1da177e4 LT |
896 | } |
897 | break; | |
1da177e4 | 898 | case FSF_GOOD: |
c41f8cbd | 899 | req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED; |
1da177e4 | 900 | break; |
1da177e4 | 901 | } |
1da177e4 LT |
902 | } |
903 | ||
904 | /** | |
c41f8cbd SS |
905 | * zfcp_fsf_abort_fcp_command - abort running SCSI command |
906 | * @old_req_id: unsigned long | |
c41f8cbd | 907 | * @unit: pointer to struct zfcp_unit |
c41f8cbd | 908 | * Returns: pointer to struct zfcp_fsf_req |
1da177e4 | 909 | */ |
1da177e4 | 910 | |
c41f8cbd | 911 | struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id, |
63caf367 | 912 | struct zfcp_unit *unit) |
1da177e4 | 913 | { |
44cc76f2 | 914 | struct qdio_buffer_element *sbale; |
c41f8cbd | 915 | struct zfcp_fsf_req *req = NULL; |
564e1c86 | 916 | struct zfcp_qdio *qdio = unit->port->adapter->qdio; |
8a36e453 | 917 | |
564e1c86 SS |
918 | spin_lock_bh(&qdio->req_q_lock); |
919 | if (zfcp_fsf_req_sbal_get(qdio)) | |
c41f8cbd | 920 | goto out; |
564e1c86 SS |
921 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND, |
922 | qdio->adapter->pool.scsi_abort); | |
633528c3 SS |
923 | if (IS_ERR(req)) { |
924 | req = NULL; | |
c41f8cbd | 925 | goto out; |
633528c3 | 926 | } |
2abbe866 | 927 | |
c41f8cbd SS |
928 | if (unlikely(!(atomic_read(&unit->status) & |
929 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
930 | goto out_error_free; | |
1da177e4 | 931 | |
564e1c86 | 932 | sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); |
c41f8cbd SS |
933 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
934 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 935 | |
c41f8cbd SS |
936 | req->data = unit; |
937 | req->handler = zfcp_fsf_abort_fcp_command_handler; | |
938 | req->qtcb->header.lun_handle = unit->handle; | |
939 | req->qtcb->header.port_handle = unit->port->handle; | |
940 | req->qtcb->bottom.support.req_handle = (u64) old_req_id; | |
941 | ||
942 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); | |
943 | if (!zfcp_fsf_req_send(req)) | |
944 | goto out; | |
945 | ||
946 | out_error_free: | |
947 | zfcp_fsf_req_free(req); | |
948 | req = NULL; | |
949 | out: | |
564e1c86 | 950 | spin_unlock_bh(&qdio->req_q_lock); |
c41f8cbd | 951 | return req; |
1da177e4 LT |
952 | } |
953 | ||
c41f8cbd | 954 | static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) |
1da177e4 | 955 | { |
c41f8cbd SS |
956 | struct zfcp_adapter *adapter = req->adapter; |
957 | struct zfcp_send_ct *send_ct = req->data; | |
c41f8cbd | 958 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1da177e4 | 959 | |
c41f8cbd | 960 | send_ct->status = -EINVAL; |
1da177e4 | 961 | |
c41f8cbd | 962 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
963 | goto skip_fsfstatus; |
964 | ||
1da177e4 | 965 | switch (header->fsf_status) { |
1da177e4 | 966 | case FSF_GOOD: |
5771710b | 967 | zfcp_dbf_san_ct_response(req); |
c41f8cbd | 968 | send_ct->status = 0; |
1da177e4 | 969 | break; |
1da177e4 | 970 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 971 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 972 | break; |
1da177e4 | 973 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
974 | switch (header->fsf_status_qual.word[0]){ |
975 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 976 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 977 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 978 | break; |
1da177e4 LT |
979 | } |
980 | break; | |
1da177e4 | 981 | case FSF_ACCESS_DENIED: |
1da177e4 | 982 | break; |
1da177e4 | 983 | case FSF_PORT_BOXED: |
c41f8cbd SS |
984 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
985 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 986 | break; |
c41f8cbd | 987 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 988 | zfcp_erp_adapter_reopen(adapter, 0, "fsscth1", req); |
dceab655 | 989 | /* fall through */ |
c41f8cbd | 990 | case FSF_GENERIC_COMMAND_REJECTED: |
1da177e4 | 991 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 992 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 993 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 994 | case FSF_SBAL_MISMATCH: |
c41f8cbd | 995 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
996 | break; |
997 | } | |
998 | ||
999 | skip_fsfstatus: | |
c41f8cbd | 1000 | if (send_ct->handler) |
1da177e4 | 1001 | send_ct->handler(send_ct->handler_data); |
c41f8cbd | 1002 | } |
1da177e4 | 1003 | |
426f6059 CS |
1004 | static void zfcp_fsf_setup_ct_els_unchained(struct qdio_buffer_element *sbale, |
1005 | struct scatterlist *sg_req, | |
1006 | struct scatterlist *sg_resp) | |
1007 | { | |
1008 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ; | |
1009 | sbale[2].addr = sg_virt(sg_req); | |
1010 | sbale[2].length = sg_req->length; | |
1011 | sbale[3].addr = sg_virt(sg_resp); | |
1012 | sbale[3].length = sg_resp->length; | |
1013 | sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1014 | } | |
1015 | ||
1016 | static int zfcp_fsf_one_sbal(struct scatterlist *sg) | |
1017 | { | |
1018 | return sg_is_last(sg) && sg->length <= PAGE_SIZE; | |
1019 | } | |
1020 | ||
39eb7e9a CS |
1021 | static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req, |
1022 | struct scatterlist *sg_req, | |
1023 | struct scatterlist *sg_resp, | |
1024 | int max_sbals) | |
c41f8cbd | 1025 | { |
42428f74 | 1026 | struct zfcp_adapter *adapter = req->adapter; |
564e1c86 | 1027 | struct qdio_buffer_element *sbale = zfcp_qdio_sbale_req(adapter->qdio, |
42428f74 SS |
1028 | &req->queue_req); |
1029 | u32 feat = adapter->adapter_features; | |
c41f8cbd SS |
1030 | int bytes; |
1031 | ||
39eb7e9a | 1032 | if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) { |
426f6059 | 1033 | if (!zfcp_fsf_one_sbal(sg_req) || !zfcp_fsf_one_sbal(sg_resp)) |
39eb7e9a CS |
1034 | return -EOPNOTSUPP; |
1035 | ||
426f6059 CS |
1036 | zfcp_fsf_setup_ct_els_unchained(sbale, sg_req, sg_resp); |
1037 | return 0; | |
1038 | } | |
1039 | ||
1040 | /* use single, unchained SBAL if it can hold the request */ | |
1041 | if (zfcp_fsf_one_sbal(sg_req) && zfcp_fsf_one_sbal(sg_resp)) { | |
1042 | zfcp_fsf_setup_ct_els_unchained(sbale, sg_req, sg_resp); | |
39eb7e9a CS |
1043 | return 0; |
1044 | } | |
1045 | ||
564e1c86 | 1046 | bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->queue_req, |
42428f74 | 1047 | SBAL_FLAGS0_TYPE_WRITE_READ, |
c41f8cbd SS |
1048 | sg_req, max_sbals); |
1049 | if (bytes <= 0) | |
9072df4d | 1050 | return -EIO; |
c41f8cbd | 1051 | req->qtcb->bottom.support.req_buf_length = bytes; |
42428f74 | 1052 | req->queue_req.sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; |
c41f8cbd | 1053 | |
564e1c86 | 1054 | bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->queue_req, |
42428f74 | 1055 | SBAL_FLAGS0_TYPE_WRITE_READ, |
c41f8cbd | 1056 | sg_resp, max_sbals); |
b1a58985 | 1057 | req->qtcb->bottom.support.resp_buf_length = bytes; |
c41f8cbd | 1058 | if (bytes <= 0) |
9072df4d | 1059 | return -EIO; |
98fc4d5c | 1060 | |
b1a58985 CS |
1061 | return 0; |
1062 | } | |
1063 | ||
1064 | static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req, | |
1065 | struct scatterlist *sg_req, | |
1066 | struct scatterlist *sg_resp, | |
1067 | int max_sbals) | |
1068 | { | |
1069 | int ret; | |
1070 | ||
1071 | ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp, max_sbals); | |
1072 | if (ret) | |
1073 | return ret; | |
1074 | ||
98fc4d5c | 1075 | /* common settings for ct/gs and els requests */ |
98fc4d5c CS |
1076 | req->qtcb->bottom.support.service_class = FSF_CLASS_3; |
1077 | req->qtcb->bottom.support.timeout = 2 * R_A_TOV; | |
9d38500d | 1078 | zfcp_fsf_start_timer(req, (2 * R_A_TOV + 10) * HZ); |
c41f8cbd SS |
1079 | |
1080 | return 0; | |
1da177e4 LT |
1081 | } |
1082 | ||
1083 | /** | |
c41f8cbd SS |
1084 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) |
1085 | * @ct: pointer to struct zfcp_send_ct with data for request | |
1086 | * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req | |
1da177e4 | 1087 | */ |
799b76d0 | 1088 | int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool) |
1da177e4 | 1089 | { |
5ab944f9 | 1090 | struct zfcp_wka_port *wka_port = ct->wka_port; |
564e1c86 | 1091 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
c41f8cbd SS |
1092 | struct zfcp_fsf_req *req; |
1093 | int ret = -EIO; | |
1da177e4 | 1094 | |
564e1c86 SS |
1095 | spin_lock_bh(&qdio->req_q_lock); |
1096 | if (zfcp_fsf_req_sbal_get(qdio)) | |
c41f8cbd | 1097 | goto out; |
1da177e4 | 1098 | |
564e1c86 | 1099 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC, pool); |
09a46c6e | 1100 | |
025270f0 | 1101 | if (IS_ERR(req)) { |
c41f8cbd SS |
1102 | ret = PTR_ERR(req); |
1103 | goto out; | |
3f0ca62a CS |
1104 | } |
1105 | ||
09a46c6e | 1106 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
b1a58985 CS |
1107 | ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp, |
1108 | FSF_MAX_SBALS_PER_REQ); | |
553448f6 | 1109 | if (ret) |
1da177e4 | 1110 | goto failed_send; |
1da177e4 | 1111 | |
c41f8cbd | 1112 | req->handler = zfcp_fsf_send_ct_handler; |
5ab944f9 | 1113 | req->qtcb->header.port_handle = wka_port->handle; |
c41f8cbd SS |
1114 | req->data = ct; |
1115 | ||
5771710b | 1116 | zfcp_dbf_san_ct_request(req); |
1da177e4 | 1117 | |
c41f8cbd SS |
1118 | ret = zfcp_fsf_req_send(req); |
1119 | if (ret) | |
1120 | goto failed_send; | |
1da177e4 | 1121 | |
c41f8cbd | 1122 | goto out; |
1da177e4 | 1123 | |
c41f8cbd SS |
1124 | failed_send: |
1125 | zfcp_fsf_req_free(req); | |
c41f8cbd | 1126 | out: |
564e1c86 | 1127 | spin_unlock_bh(&qdio->req_q_lock); |
c41f8cbd | 1128 | return ret; |
1da177e4 LT |
1129 | } |
1130 | ||
c41f8cbd | 1131 | static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1132 | { |
c41f8cbd SS |
1133 | struct zfcp_send_els *send_els = req->data; |
1134 | struct zfcp_port *port = send_els->port; | |
1135 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1136 | |
c41f8cbd | 1137 | send_els->status = -EINVAL; |
1da177e4 | 1138 | |
c41f8cbd | 1139 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
1140 | goto skip_fsfstatus; |
1141 | ||
1142 | switch (header->fsf_status) { | |
1da177e4 | 1143 | case FSF_GOOD: |
5771710b | 1144 | zfcp_dbf_san_els_response(req); |
c41f8cbd | 1145 | send_els->status = 0; |
1da177e4 | 1146 | break; |
1da177e4 | 1147 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 1148 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 1149 | break; |
1da177e4 | 1150 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1151 | switch (header->fsf_status_qual.word[0]){ |
1152 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
64b29a13 | 1153 | if (port && (send_els->ls_code != ZFCP_LS_ADISC)) |
6f53a2d2 | 1154 | zfcp_fc_test_link(port); |
c41f8cbd | 1155 | /*fall through */ |
1da177e4 | 1156 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1157 | case FSF_SQ_RETRY_IF_POSSIBLE: |
c41f8cbd | 1158 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1159 | break; |
1da177e4 LT |
1160 | } |
1161 | break; | |
1da177e4 | 1162 | case FSF_ELS_COMMAND_REJECTED: |
1da177e4 | 1163 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1164 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1165 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1166 | break; |
1da177e4 | 1167 | case FSF_ACCESS_DENIED: |
dc577d55 CS |
1168 | if (port) |
1169 | zfcp_fsf_access_denied_port(req, port); | |
1da177e4 | 1170 | break; |
c41f8cbd SS |
1171 | case FSF_SBAL_MISMATCH: |
1172 | /* should never occure, avoided in zfcp_fsf_send_els */ | |
1173 | /* fall through */ | |
1da177e4 | 1174 | default: |
c41f8cbd | 1175 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1176 | break; |
1177 | } | |
1da177e4 | 1178 | skip_fsfstatus: |
aa551daf | 1179 | if (send_els->handler) |
1da177e4 | 1180 | send_els->handler(send_els->handler_data); |
c41f8cbd | 1181 | } |
1da177e4 | 1182 | |
c41f8cbd SS |
1183 | /** |
1184 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) | |
1185 | * @els: pointer to struct zfcp_send_els with data for the command | |
1186 | */ | |
1187 | int zfcp_fsf_send_els(struct zfcp_send_els *els) | |
1188 | { | |
1189 | struct zfcp_fsf_req *req; | |
564e1c86 | 1190 | struct zfcp_qdio *qdio = els->adapter->qdio; |
c41f8cbd SS |
1191 | int ret = -EIO; |
1192 | ||
564e1c86 SS |
1193 | spin_lock_bh(&qdio->req_q_lock); |
1194 | if (zfcp_fsf_req_sbal_get(qdio)) | |
c41f8cbd | 1195 | goto out; |
09a46c6e | 1196 | |
564e1c86 | 1197 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS, NULL); |
09a46c6e | 1198 | |
025270f0 | 1199 | if (IS_ERR(req)) { |
c41f8cbd SS |
1200 | ret = PTR_ERR(req); |
1201 | goto out; | |
1202 | } | |
1203 | ||
09a46c6e | 1204 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
b1a58985 | 1205 | ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, 2); |
44cc76f2 | 1206 | |
c41f8cbd SS |
1207 | if (ret) |
1208 | goto failed_send; | |
1209 | ||
98fc4d5c | 1210 | req->qtcb->bottom.support.d_id = els->d_id; |
c41f8cbd | 1211 | req->handler = zfcp_fsf_send_els_handler; |
c41f8cbd SS |
1212 | req->data = els; |
1213 | ||
5771710b | 1214 | zfcp_dbf_san_els_request(req); |
c41f8cbd | 1215 | |
c41f8cbd SS |
1216 | ret = zfcp_fsf_req_send(req); |
1217 | if (ret) | |
1218 | goto failed_send; | |
1219 | ||
1220 | goto out; | |
1221 | ||
1222 | failed_send: | |
1223 | zfcp_fsf_req_free(req); | |
1224 | out: | |
564e1c86 | 1225 | spin_unlock_bh(&qdio->req_q_lock); |
c41f8cbd | 1226 | return ret; |
1da177e4 LT |
1227 | } |
1228 | ||
c41f8cbd | 1229 | int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1230 | { |
44cc76f2 | 1231 | struct qdio_buffer_element *sbale; |
c41f8cbd | 1232 | struct zfcp_fsf_req *req; |
564e1c86 | 1233 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1234 | int retval = -EIO; |
1235 | ||
564e1c86 SS |
1236 | spin_lock_bh(&qdio->req_q_lock); |
1237 | if (zfcp_fsf_req_sbal_get(qdio)) | |
c41f8cbd | 1238 | goto out; |
09a46c6e | 1239 | |
564e1c86 SS |
1240 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, |
1241 | qdio->adapter->pool.erp_req); | |
09a46c6e | 1242 | |
025270f0 | 1243 | if (IS_ERR(req)) { |
c41f8cbd SS |
1244 | retval = PTR_ERR(req); |
1245 | goto out; | |
1da177e4 LT |
1246 | } |
1247 | ||
09a46c6e | 1248 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
564e1c86 | 1249 | sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); |
52ef11a7 SS |
1250 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1251 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1252 | |
c41f8cbd | 1253 | req->qtcb->bottom.config.feature_selection = |
aef4a983 MS |
1254 | FSF_FEATURE_CFDC | |
1255 | FSF_FEATURE_LUN_SHARING | | |
9eb69aff | 1256 | FSF_FEATURE_NOTIFICATION_LOST | |
aef4a983 | 1257 | FSF_FEATURE_UPDATE_ALERT; |
c41f8cbd SS |
1258 | req->erp_action = erp_action; |
1259 | req->handler = zfcp_fsf_exchange_config_data_handler; | |
1260 | erp_action->fsf_req = req; | |
1da177e4 | 1261 | |
287ac01a | 1262 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1263 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1264 | if (retval) { |
c41f8cbd | 1265 | zfcp_fsf_req_free(req); |
1da177e4 | 1266 | erp_action->fsf_req = NULL; |
1da177e4 | 1267 | } |
c41f8cbd | 1268 | out: |
564e1c86 | 1269 | spin_unlock_bh(&qdio->req_q_lock); |
52ef11a7 SS |
1270 | return retval; |
1271 | } | |
1da177e4 | 1272 | |
564e1c86 | 1273 | int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio, |
c41f8cbd | 1274 | struct fsf_qtcb_bottom_config *data) |
52ef11a7 | 1275 | { |
44cc76f2 | 1276 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1277 | struct zfcp_fsf_req *req = NULL; |
1278 | int retval = -EIO; | |
1279 | ||
564e1c86 SS |
1280 | spin_lock_bh(&qdio->req_q_lock); |
1281 | if (zfcp_fsf_req_sbal_get(qdio)) | |
ada81b74 | 1282 | goto out_unlock; |
c41f8cbd | 1283 | |
564e1c86 | 1284 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, NULL); |
09a46c6e | 1285 | |
025270f0 | 1286 | if (IS_ERR(req)) { |
c41f8cbd | 1287 | retval = PTR_ERR(req); |
ada81b74 | 1288 | goto out_unlock; |
52ef11a7 SS |
1289 | } |
1290 | ||
564e1c86 | 1291 | sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); |
52ef11a7 SS |
1292 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1293 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
c41f8cbd | 1294 | req->handler = zfcp_fsf_exchange_config_data_handler; |
52ef11a7 | 1295 | |
c41f8cbd | 1296 | req->qtcb->bottom.config.feature_selection = |
52ef11a7 SS |
1297 | FSF_FEATURE_CFDC | |
1298 | FSF_FEATURE_LUN_SHARING | | |
1299 | FSF_FEATURE_NOTIFICATION_LOST | | |
1300 | FSF_FEATURE_UPDATE_ALERT; | |
1301 | ||
1302 | if (data) | |
c41f8cbd | 1303 | req->data = data; |
52ef11a7 | 1304 | |
c41f8cbd SS |
1305 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
1306 | retval = zfcp_fsf_req_send(req); | |
564e1c86 | 1307 | spin_unlock_bh(&qdio->req_q_lock); |
553448f6 | 1308 | if (!retval) |
058b8647 | 1309 | wait_for_completion(&req->completion); |
52ef11a7 | 1310 | |
c41f8cbd | 1311 | zfcp_fsf_req_free(req); |
ada81b74 | 1312 | return retval; |
52ef11a7 | 1313 | |
ada81b74 | 1314 | out_unlock: |
564e1c86 | 1315 | spin_unlock_bh(&qdio->req_q_lock); |
1da177e4 LT |
1316 | return retval; |
1317 | } | |
1318 | ||
1da177e4 LT |
1319 | /** |
1320 | * zfcp_fsf_exchange_port_data - request information about local port | |
aef4a983 | 1321 | * @erp_action: ERP action for the adapter for which port data is requested |
c41f8cbd | 1322 | * Returns: 0 on success, error otherwise |
1da177e4 | 1323 | */ |
c41f8cbd | 1324 | int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1325 | { |
564e1c86 | 1326 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
44cc76f2 | 1327 | struct qdio_buffer_element *sbale; |
c41f8cbd | 1328 | struct zfcp_fsf_req *req; |
c41f8cbd | 1329 | int retval = -EIO; |
1da177e4 | 1330 | |
564e1c86 | 1331 | if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1332 | return -EOPNOTSUPP; |
1da177e4 | 1333 | |
564e1c86 SS |
1334 | spin_lock_bh(&qdio->req_q_lock); |
1335 | if (zfcp_fsf_req_sbal_get(qdio)) | |
c41f8cbd | 1336 | goto out; |
09a46c6e | 1337 | |
564e1c86 SS |
1338 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, |
1339 | qdio->adapter->pool.erp_req); | |
09a46c6e | 1340 | |
025270f0 | 1341 | if (IS_ERR(req)) { |
c41f8cbd SS |
1342 | retval = PTR_ERR(req); |
1343 | goto out; | |
aef4a983 MS |
1344 | } |
1345 | ||
09a46c6e | 1346 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
564e1c86 | 1347 | sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); |
52ef11a7 SS |
1348 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1349 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1350 | |
c41f8cbd SS |
1351 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1352 | req->erp_action = erp_action; | |
1353 | erp_action->fsf_req = req; | |
52ef11a7 | 1354 | |
287ac01a | 1355 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1356 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1357 | if (retval) { |
c41f8cbd | 1358 | zfcp_fsf_req_free(req); |
52ef11a7 SS |
1359 | erp_action->fsf_req = NULL; |
1360 | } | |
c41f8cbd | 1361 | out: |
564e1c86 | 1362 | spin_unlock_bh(&qdio->req_q_lock); |
52ef11a7 SS |
1363 | return retval; |
1364 | } | |
1365 | ||
52ef11a7 SS |
1366 | /** |
1367 | * zfcp_fsf_exchange_port_data_sync - request information about local port | |
564e1c86 | 1368 | * @qdio: pointer to struct zfcp_qdio |
c41f8cbd SS |
1369 | * @data: pointer to struct fsf_qtcb_bottom_port |
1370 | * Returns: 0 on success, error otherwise | |
52ef11a7 | 1371 | */ |
564e1c86 | 1372 | int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio, |
c41f8cbd | 1373 | struct fsf_qtcb_bottom_port *data) |
52ef11a7 | 1374 | { |
44cc76f2 | 1375 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1376 | struct zfcp_fsf_req *req = NULL; |
1377 | int retval = -EIO; | |
52ef11a7 | 1378 | |
564e1c86 | 1379 | if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1380 | return -EOPNOTSUPP; |
52ef11a7 | 1381 | |
564e1c86 SS |
1382 | spin_lock_bh(&qdio->req_q_lock); |
1383 | if (zfcp_fsf_req_sbal_get(qdio)) | |
ada81b74 | 1384 | goto out_unlock; |
c41f8cbd | 1385 | |
564e1c86 | 1386 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, NULL); |
09a46c6e | 1387 | |
025270f0 | 1388 | if (IS_ERR(req)) { |
c41f8cbd | 1389 | retval = PTR_ERR(req); |
ada81b74 | 1390 | goto out_unlock; |
1da177e4 LT |
1391 | } |
1392 | ||
52ef11a7 | 1393 | if (data) |
c41f8cbd | 1394 | req->data = data; |
52ef11a7 | 1395 | |
564e1c86 | 1396 | sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); |
52ef11a7 SS |
1397 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1398 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1399 | ||
c41f8cbd SS |
1400 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1401 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1402 | retval = zfcp_fsf_req_send(req); | |
564e1c86 | 1403 | spin_unlock_bh(&qdio->req_q_lock); |
ada81b74 | 1404 | |
553448f6 | 1405 | if (!retval) |
058b8647 SS |
1406 | wait_for_completion(&req->completion); |
1407 | ||
c41f8cbd | 1408 | zfcp_fsf_req_free(req); |
1da177e4 | 1409 | |
1da177e4 | 1410 | return retval; |
ada81b74 CS |
1411 | |
1412 | out_unlock: | |
564e1c86 | 1413 | spin_unlock_bh(&qdio->req_q_lock); |
ada81b74 | 1414 | return retval; |
1da177e4 LT |
1415 | } |
1416 | ||
c41f8cbd | 1417 | static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1418 | { |
c41f8cbd SS |
1419 | struct zfcp_port *port = req->data; |
1420 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1421 | struct fsf_plogi *plogi; |
1da177e4 | 1422 | |
c41f8cbd | 1423 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
a17c5855 | 1424 | goto out; |
1da177e4 | 1425 | |
1da177e4 | 1426 | switch (header->fsf_status) { |
1da177e4 | 1427 | case FSF_PORT_ALREADY_OPEN: |
1da177e4 | 1428 | break; |
1da177e4 | 1429 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1430 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1431 | break; |
1da177e4 | 1432 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: |
c41f8cbd | 1433 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 1434 | "Not enough FCP adapter resources to open " |
7ba58c9c SS |
1435 | "remote port 0x%016Lx\n", |
1436 | (unsigned long long)port->wwpn); | |
5ffd51a5 | 1437 | zfcp_erp_port_failed(port, "fsoph_1", req); |
c41f8cbd | 1438 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1439 | break; |
1da177e4 | 1440 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1441 | switch (header->fsf_status_qual.word[0]) { |
1442 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1443 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1444 | case FSF_SQ_NO_RETRY_POSSIBLE: |
c41f8cbd | 1445 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1446 | break; |
1447 | } | |
1448 | break; | |
1da177e4 | 1449 | case FSF_GOOD: |
1da177e4 | 1450 | port->handle = header->port_handle; |
1da177e4 LT |
1451 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN | |
1452 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
d736a27b AH |
1453 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
1454 | ZFCP_STATUS_COMMON_ACCESS_BOXED, | |
1455 | &port->status); | |
1da177e4 LT |
1456 | /* check whether D_ID has changed during open */ |
1457 | /* | |
1458 | * FIXME: This check is not airtight, as the FCP channel does | |
1459 | * not monitor closures of target port connections caused on | |
1460 | * the remote side. Thus, they might miss out on invalidating | |
1461 | * locally cached WWPNs (and other N_Port parameters) of gone | |
1462 | * target ports. So, our heroic attempt to make things safe | |
1463 | * could be undermined by 'open port' response data tagged with | |
1464 | * obsolete WWPNs. Another reason to monitor potential | |
1465 | * connection closures ourself at least (by interpreting | |
1466 | * incoming ELS' and unsolicited status). It just crosses my | |
1467 | * mind that one should be able to cross-check by means of | |
1468 | * another GID_PN straight after a port has been opened. | |
1469 | * Alternately, an ADISC/PDISC ELS should suffice, as well. | |
1470 | */ | |
c41f8cbd | 1471 | plogi = (struct fsf_plogi *) req->qtcb->bottom.support.els; |
39eb7e9a CS |
1472 | if (req->qtcb->bottom.support.els1_length >= |
1473 | FSF_PLOGI_MIN_LEN) { | |
10d00f78 | 1474 | if (plogi->serv_param.wwpn != port->wwpn) { |
b98478d7 | 1475 | port->d_id = 0; |
10d00f78 CS |
1476 | dev_warn(&port->adapter->ccw_device->dev, |
1477 | "A port opened with WWPN 0x%016Lx " | |
1478 | "returned data that identifies it as " | |
1479 | "WWPN 0x%016Lx\n", | |
1480 | (unsigned long long) port->wwpn, | |
1481 | (unsigned long long) | |
1482 | plogi->serv_param.wwpn); | |
1483 | } else { | |
c41f8cbd SS |
1484 | port->wwnn = plogi->serv_param.wwnn; |
1485 | zfcp_fc_plogi_evaluate(port, plogi); | |
1da177e4 LT |
1486 | } |
1487 | } | |
1488 | break; | |
1da177e4 | 1489 | case FSF_UNKNOWN_OP_SUBTYPE: |
c41f8cbd | 1490 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1491 | break; |
1492 | } | |
a17c5855 MP |
1493 | |
1494 | out: | |
1495 | zfcp_port_put(port); | |
1da177e4 LT |
1496 | } |
1497 | ||
c41f8cbd SS |
1498 | /** |
1499 | * zfcp_fsf_open_port - create and send open port request | |
1500 | * @erp_action: pointer to struct zfcp_erp_action | |
1501 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1502 | */ |
c41f8cbd | 1503 | int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1504 | { |
44cc76f2 | 1505 | struct qdio_buffer_element *sbale; |
564e1c86 | 1506 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
a17c5855 | 1507 | struct zfcp_port *port = erp_action->port; |
564e1c86 | 1508 | struct zfcp_fsf_req *req; |
c41f8cbd SS |
1509 | int retval = -EIO; |
1510 | ||
564e1c86 SS |
1511 | spin_lock_bh(&qdio->req_q_lock); |
1512 | if (zfcp_fsf_req_sbal_get(qdio)) | |
c41f8cbd SS |
1513 | goto out; |
1514 | ||
564e1c86 SS |
1515 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID, |
1516 | qdio->adapter->pool.erp_req); | |
09a46c6e | 1517 | |
025270f0 | 1518 | if (IS_ERR(req)) { |
c41f8cbd | 1519 | retval = PTR_ERR(req); |
1da177e4 | 1520 | goto out; |
c41f8cbd | 1521 | } |
1da177e4 | 1522 | |
09a46c6e | 1523 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
564e1c86 | 1524 | sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); |
1da177e4 LT |
1525 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1526 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1527 | ||
c41f8cbd | 1528 | req->handler = zfcp_fsf_open_port_handler; |
a17c5855 MP |
1529 | req->qtcb->bottom.support.d_id = port->d_id; |
1530 | req->data = port; | |
c41f8cbd SS |
1531 | req->erp_action = erp_action; |
1532 | erp_action->fsf_req = req; | |
a17c5855 | 1533 | zfcp_port_get(port); |
c41f8cbd | 1534 | |
287ac01a | 1535 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1536 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1537 | if (retval) { |
c41f8cbd | 1538 | zfcp_fsf_req_free(req); |
1da177e4 | 1539 | erp_action->fsf_req = NULL; |
a17c5855 | 1540 | zfcp_port_put(port); |
1da177e4 | 1541 | } |
c41f8cbd | 1542 | out: |
564e1c86 | 1543 | spin_unlock_bh(&qdio->req_q_lock); |
1da177e4 LT |
1544 | return retval; |
1545 | } | |
1546 | ||
c41f8cbd | 1547 | static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1548 | { |
c41f8cbd | 1549 | struct zfcp_port *port = req->data; |
1da177e4 | 1550 | |
c41f8cbd | 1551 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1552 | return; |
1da177e4 | 1553 | |
c41f8cbd | 1554 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1555 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 1556 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1", req); |
c41f8cbd | 1557 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1558 | break; |
1da177e4 | 1559 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 | 1560 | break; |
1da177e4 | 1561 | case FSF_GOOD: |
5ffd51a5 | 1562 | zfcp_erp_modify_port_status(port, "fscph_2", req, |
1da177e4 LT |
1563 | ZFCP_STATUS_COMMON_OPEN, |
1564 | ZFCP_CLEAR); | |
1da177e4 | 1565 | break; |
1da177e4 | 1566 | } |
1da177e4 LT |
1567 | } |
1568 | ||
c41f8cbd SS |
1569 | /** |
1570 | * zfcp_fsf_close_port - create and send close port request | |
1571 | * @erp_action: pointer to struct zfcp_erp_action | |
1572 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1573 | */ |
c41f8cbd | 1574 | int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1575 | { |
44cc76f2 | 1576 | struct qdio_buffer_element *sbale; |
564e1c86 | 1577 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1578 | struct zfcp_fsf_req *req; |
1579 | int retval = -EIO; | |
1580 | ||
564e1c86 SS |
1581 | spin_lock_bh(&qdio->req_q_lock); |
1582 | if (zfcp_fsf_req_sbal_get(qdio)) | |
c41f8cbd SS |
1583 | goto out; |
1584 | ||
564e1c86 SS |
1585 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT, |
1586 | qdio->adapter->pool.erp_req); | |
09a46c6e | 1587 | |
025270f0 | 1588 | if (IS_ERR(req)) { |
c41f8cbd | 1589 | retval = PTR_ERR(req); |
1da177e4 | 1590 | goto out; |
c41f8cbd | 1591 | } |
1da177e4 | 1592 | |
09a46c6e | 1593 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
564e1c86 | 1594 | sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); |
1da177e4 LT |
1595 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1596 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1597 | ||
c41f8cbd SS |
1598 | req->handler = zfcp_fsf_close_port_handler; |
1599 | req->data = erp_action->port; | |
1600 | req->erp_action = erp_action; | |
1601 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1602 | erp_action->fsf_req = req; | |
c41f8cbd | 1603 | |
287ac01a | 1604 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1605 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1606 | if (retval) { |
c41f8cbd | 1607 | zfcp_fsf_req_free(req); |
1da177e4 | 1608 | erp_action->fsf_req = NULL; |
1da177e4 | 1609 | } |
c41f8cbd | 1610 | out: |
564e1c86 | 1611 | spin_unlock_bh(&qdio->req_q_lock); |
1da177e4 LT |
1612 | return retval; |
1613 | } | |
1614 | ||
5ab944f9 SS |
1615 | static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req) |
1616 | { | |
1617 | struct zfcp_wka_port *wka_port = req->data; | |
1618 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1619 | ||
1620 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
1621 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1622 | goto out; | |
1623 | } | |
1624 | ||
1625 | switch (header->fsf_status) { | |
1626 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: | |
1627 | dev_warn(&req->adapter->ccw_device->dev, | |
1628 | "Opening WKA port 0x%x failed\n", wka_port->d_id); | |
dceab655 | 1629 | /* fall through */ |
5ab944f9 SS |
1630 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1631 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
dceab655 | 1632 | /* fall through */ |
5ab944f9 SS |
1633 | case FSF_ACCESS_DENIED: |
1634 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1635 | break; | |
5ab944f9 SS |
1636 | case FSF_GOOD: |
1637 | wka_port->handle = header->port_handle; | |
27f492cc SS |
1638 | /* fall through */ |
1639 | case FSF_PORT_ALREADY_OPEN: | |
5ab944f9 SS |
1640 | wka_port->status = ZFCP_WKA_PORT_ONLINE; |
1641 | } | |
1642 | out: | |
1643 | wake_up(&wka_port->completion_wq); | |
1644 | } | |
1645 | ||
1646 | /** | |
1647 | * zfcp_fsf_open_wka_port - create and send open wka-port request | |
1648 | * @wka_port: pointer to struct zfcp_wka_port | |
1649 | * Returns: 0 on success, error otherwise | |
1650 | */ | |
1651 | int zfcp_fsf_open_wka_port(struct zfcp_wka_port *wka_port) | |
1652 | { | |
1653 | struct qdio_buffer_element *sbale; | |
564e1c86 | 1654 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
5ab944f9 SS |
1655 | struct zfcp_fsf_req *req; |
1656 | int retval = -EIO; | |
1657 | ||
564e1c86 SS |
1658 | spin_lock_bh(&qdio->req_q_lock); |
1659 | if (zfcp_fsf_req_sbal_get(qdio)) | |
5ab944f9 SS |
1660 | goto out; |
1661 | ||
564e1c86 SS |
1662 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID, |
1663 | qdio->adapter->pool.erp_req); | |
09a46c6e | 1664 | |
5ab944f9 SS |
1665 | if (unlikely(IS_ERR(req))) { |
1666 | retval = PTR_ERR(req); | |
1667 | goto out; | |
1668 | } | |
1669 | ||
09a46c6e | 1670 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
564e1c86 | 1671 | sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); |
5ab944f9 SS |
1672 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1673 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1674 | ||
1675 | req->handler = zfcp_fsf_open_wka_port_handler; | |
1676 | req->qtcb->bottom.support.d_id = wka_port->d_id; | |
1677 | req->data = wka_port; | |
1678 | ||
1679 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1680 | retval = zfcp_fsf_req_send(req); | |
1681 | if (retval) | |
1682 | zfcp_fsf_req_free(req); | |
1683 | out: | |
564e1c86 | 1684 | spin_unlock_bh(&qdio->req_q_lock); |
5ab944f9 SS |
1685 | return retval; |
1686 | } | |
1687 | ||
1688 | static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req) | |
1689 | { | |
1690 | struct zfcp_wka_port *wka_port = req->data; | |
1691 | ||
1692 | if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) { | |
1693 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
5ffd51a5 | 1694 | zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1", req); |
5ab944f9 SS |
1695 | } |
1696 | ||
1697 | wka_port->status = ZFCP_WKA_PORT_OFFLINE; | |
1698 | wake_up(&wka_port->completion_wq); | |
1699 | } | |
1700 | ||
1701 | /** | |
1702 | * zfcp_fsf_close_wka_port - create and send close wka port request | |
1703 | * @erp_action: pointer to struct zfcp_erp_action | |
1704 | * Returns: 0 on success, error otherwise | |
1705 | */ | |
1706 | int zfcp_fsf_close_wka_port(struct zfcp_wka_port *wka_port) | |
1707 | { | |
1708 | struct qdio_buffer_element *sbale; | |
564e1c86 | 1709 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
5ab944f9 SS |
1710 | struct zfcp_fsf_req *req; |
1711 | int retval = -EIO; | |
1712 | ||
564e1c86 SS |
1713 | spin_lock_bh(&qdio->req_q_lock); |
1714 | if (zfcp_fsf_req_sbal_get(qdio)) | |
5ab944f9 SS |
1715 | goto out; |
1716 | ||
564e1c86 SS |
1717 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT, |
1718 | qdio->adapter->pool.erp_req); | |
09a46c6e | 1719 | |
5ab944f9 SS |
1720 | if (unlikely(IS_ERR(req))) { |
1721 | retval = PTR_ERR(req); | |
1722 | goto out; | |
1723 | } | |
1724 | ||
09a46c6e | 1725 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
564e1c86 | 1726 | sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); |
5ab944f9 SS |
1727 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1728 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1729 | ||
1730 | req->handler = zfcp_fsf_close_wka_port_handler; | |
1731 | req->data = wka_port; | |
1732 | req->qtcb->header.port_handle = wka_port->handle; | |
1733 | ||
1734 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1735 | retval = zfcp_fsf_req_send(req); | |
1736 | if (retval) | |
1737 | zfcp_fsf_req_free(req); | |
1738 | out: | |
564e1c86 | 1739 | spin_unlock_bh(&qdio->req_q_lock); |
5ab944f9 SS |
1740 | return retval; |
1741 | } | |
1742 | ||
c41f8cbd | 1743 | static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1744 | { |
c41f8cbd SS |
1745 | struct zfcp_port *port = req->data; |
1746 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1747 | struct zfcp_unit *unit; |
1da177e4 | 1748 | |
c41f8cbd | 1749 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
a5b11dda | 1750 | return; |
1da177e4 | 1751 | |
1da177e4 | 1752 | switch (header->fsf_status) { |
1da177e4 | 1753 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 1754 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1", req); |
c41f8cbd | 1755 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1756 | break; |
1da177e4 | 1757 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1758 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1759 | break; |
1da177e4 | 1760 | case FSF_PORT_BOXED: |
5c815d15 CS |
1761 | /* can't use generic zfcp_erp_modify_port_status because |
1762 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */ | |
1763 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
ecf0c772 SS |
1764 | read_lock(&port->unit_list_lock); |
1765 | list_for_each_entry(unit, &port->unit_list, list) | |
5c815d15 CS |
1766 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, |
1767 | &unit->status); | |
ecf0c772 | 1768 | read_unlock(&port->unit_list_lock); |
dfb3cf00 SS |
1769 | zfcp_erp_port_boxed(port, "fscpph2", req); |
1770 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | | |
1771 | ZFCP_STATUS_FSFREQ_RETRY; | |
1772 | ||
1da177e4 | 1773 | break; |
1da177e4 | 1774 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1775 | switch (header->fsf_status_qual.word[0]) { |
1776 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
c41f8cbd | 1777 | /* fall through */ |
1da177e4 | 1778 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1779 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1780 | break; |
1da177e4 LT |
1781 | } |
1782 | break; | |
1da177e4 | 1783 | case FSF_GOOD: |
1da177e4 LT |
1784 | /* can't use generic zfcp_erp_modify_port_status because |
1785 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port | |
1786 | */ | |
1787 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
ecf0c772 SS |
1788 | read_lock(&port->unit_list_lock); |
1789 | list_for_each_entry(unit, &port->unit_list, list) | |
c41f8cbd SS |
1790 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, |
1791 | &unit->status); | |
ecf0c772 | 1792 | read_unlock(&port->unit_list_lock); |
1da177e4 | 1793 | break; |
1da177e4 | 1794 | } |
1da177e4 LT |
1795 | } |
1796 | ||
c41f8cbd SS |
1797 | /** |
1798 | * zfcp_fsf_close_physical_port - close physical port | |
1799 | * @erp_action: pointer to struct zfcp_erp_action | |
1800 | * Returns: 0 on success | |
1da177e4 | 1801 | */ |
c41f8cbd | 1802 | int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1803 | { |
44cc76f2 | 1804 | struct qdio_buffer_element *sbale; |
564e1c86 | 1805 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1806 | struct zfcp_fsf_req *req; |
1807 | int retval = -EIO; | |
1808 | ||
564e1c86 SS |
1809 | spin_lock_bh(&qdio->req_q_lock); |
1810 | if (zfcp_fsf_req_sbal_get(qdio)) | |
1da177e4 | 1811 | goto out; |
1da177e4 | 1812 | |
564e1c86 SS |
1813 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT, |
1814 | qdio->adapter->pool.erp_req); | |
09a46c6e | 1815 | |
025270f0 | 1816 | if (IS_ERR(req)) { |
c41f8cbd SS |
1817 | retval = PTR_ERR(req); |
1818 | goto out; | |
1819 | } | |
1da177e4 | 1820 | |
09a46c6e | 1821 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
564e1c86 | 1822 | sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); |
c41f8cbd SS |
1823 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1824 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1825 | |
c41f8cbd SS |
1826 | req->data = erp_action->port; |
1827 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1828 | req->erp_action = erp_action; | |
1829 | req->handler = zfcp_fsf_close_physical_port_handler; | |
1830 | erp_action->fsf_req = req; | |
c41f8cbd | 1831 | |
287ac01a | 1832 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1833 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1834 | if (retval) { |
c41f8cbd | 1835 | zfcp_fsf_req_free(req); |
1da177e4 | 1836 | erp_action->fsf_req = NULL; |
1da177e4 | 1837 | } |
c41f8cbd | 1838 | out: |
564e1c86 | 1839 | spin_unlock_bh(&qdio->req_q_lock); |
1da177e4 LT |
1840 | return retval; |
1841 | } | |
1842 | ||
c41f8cbd | 1843 | static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1844 | { |
c41f8cbd SS |
1845 | struct zfcp_adapter *adapter = req->adapter; |
1846 | struct zfcp_unit *unit = req->data; | |
1847 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1848 | struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support; | |
1849 | struct fsf_queue_designator *queue_designator = | |
1850 | &header->fsf_status_qual.fsf_queue_designator; | |
aef4a983 | 1851 | int exclusive, readwrite; |
1da177e4 | 1852 | |
c41f8cbd | 1853 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1854 | return; |
1da177e4 | 1855 | |
1da177e4 | 1856 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
b64ddf96 | 1857 | ZFCP_STATUS_COMMON_ACCESS_BOXED | |
1da177e4 LT |
1858 | ZFCP_STATUS_UNIT_SHARED | |
1859 | ZFCP_STATUS_UNIT_READONLY, | |
1860 | &unit->status); | |
1861 | ||
1da177e4 LT |
1862 | switch (header->fsf_status) { |
1863 | ||
1864 | case FSF_PORT_HANDLE_NOT_VALID: | |
5ffd51a5 | 1865 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fsouh_1", req); |
c41f8cbd | 1866 | /* fall through */ |
1da177e4 | 1867 | case FSF_LUN_ALREADY_OPEN: |
1da177e4 | 1868 | break; |
1da177e4 | 1869 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1870 | zfcp_fsf_access_denied_unit(req, unit); |
1da177e4 | 1871 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
553448f6 | 1872 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); |
1da177e4 | 1873 | break; |
1da177e4 | 1874 | case FSF_PORT_BOXED: |
5ffd51a5 | 1875 | zfcp_erp_port_boxed(unit->port, "fsouh_2", req); |
c41f8cbd SS |
1876 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
1877 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 1878 | break; |
1da177e4 | 1879 | case FSF_LUN_SHARING_VIOLATION: |
c41f8cbd | 1880 | if (header->fsf_status_qual.word[0]) |
553448f6 | 1881 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1882 | "LUN 0x%Lx on port 0x%Lx is already in " |
1883 | "use by CSS%d, MIF Image ID %x\n", | |
7ba58c9c SS |
1884 | (unsigned long long)unit->fcp_lun, |
1885 | (unsigned long long)unit->port->wwpn, | |
ff3b24fa CS |
1886 | queue_designator->cssid, |
1887 | queue_designator->hla); | |
c41f8cbd | 1888 | else |
553448f6 CS |
1889 | zfcp_act_eval_err(adapter, |
1890 | header->fsf_status_qual.word[2]); | |
5ffd51a5 | 1891 | zfcp_erp_unit_access_denied(unit, "fsouh_3", req); |
1da177e4 LT |
1892 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
1893 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); | |
c41f8cbd | 1894 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1895 | break; |
1da177e4 | 1896 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: |
c41f8cbd | 1897 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1898 | "No handle is available for LUN " |
1899 | "0x%016Lx on port 0x%016Lx\n", | |
7ba58c9c SS |
1900 | (unsigned long long)unit->fcp_lun, |
1901 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 1902 | zfcp_erp_unit_failed(unit, "fsouh_4", req); |
c41f8cbd SS |
1903 | /* fall through */ |
1904 | case FSF_INVALID_COMMAND_OPTION: | |
1905 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1906 | break; |
1da177e4 | 1907 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1908 | switch (header->fsf_status_qual.word[0]) { |
1909 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
6f53a2d2 | 1910 | zfcp_fc_test_link(unit->port); |
c41f8cbd | 1911 | /* fall through */ |
1da177e4 | 1912 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1913 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1914 | break; |
1da177e4 LT |
1915 | } |
1916 | break; | |
1917 | ||
1da177e4 | 1918 | case FSF_GOOD: |
1da177e4 | 1919 | unit->handle = header->lun_handle; |
1da177e4 | 1920 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
aef4a983 MS |
1921 | |
1922 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) && | |
1923 | (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) && | |
6fcf41d1 | 1924 | !zfcp_ccw_priv_sch(adapter)) { |
aef4a983 MS |
1925 | exclusive = (bottom->lun_access_info & |
1926 | FSF_UNIT_ACCESS_EXCLUSIVE); | |
1927 | readwrite = (bottom->lun_access_info & | |
1928 | FSF_UNIT_ACCESS_OUTBOUND_TRANSFER); | |
1929 | ||
1da177e4 LT |
1930 | if (!exclusive) |
1931 | atomic_set_mask(ZFCP_STATUS_UNIT_SHARED, | |
1932 | &unit->status); | |
1933 | ||
1934 | if (!readwrite) { | |
1935 | atomic_set_mask(ZFCP_STATUS_UNIT_READONLY, | |
1936 | &unit->status); | |
c41f8cbd | 1937 | dev_info(&adapter->ccw_device->dev, |
ff3b24fa CS |
1938 | "SCSI device at LUN 0x%016Lx on port " |
1939 | "0x%016Lx opened read-only\n", | |
7ba58c9c SS |
1940 | (unsigned long long)unit->fcp_lun, |
1941 | (unsigned long long)unit->port->wwpn); | |
1da177e4 LT |
1942 | } |
1943 | ||
1944 | if (exclusive && !readwrite) { | |
c41f8cbd | 1945 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
1946 | "Exclusive read-only access not " |
1947 | "supported (unit 0x%016Lx, " | |
1948 | "port 0x%016Lx)\n", | |
7ba58c9c SS |
1949 | (unsigned long long)unit->fcp_lun, |
1950 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 1951 | zfcp_erp_unit_failed(unit, "fsouh_5", req); |
c41f8cbd | 1952 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
5ffd51a5 | 1953 | zfcp_erp_unit_shutdown(unit, 0, "fsouh_6", req); |
1da177e4 | 1954 | } else if (!exclusive && readwrite) { |
c41f8cbd | 1955 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
1956 | "Shared read-write access not " |
1957 | "supported (unit 0x%016Lx, port " | |
27c3f0a6 | 1958 | "0x%016Lx)\n", |
7ba58c9c SS |
1959 | (unsigned long long)unit->fcp_lun, |
1960 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 1961 | zfcp_erp_unit_failed(unit, "fsouh_7", req); |
c41f8cbd | 1962 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
5ffd51a5 | 1963 | zfcp_erp_unit_shutdown(unit, 0, "fsouh_8", req); |
1da177e4 LT |
1964 | } |
1965 | } | |
1da177e4 | 1966 | break; |
1da177e4 | 1967 | } |
1da177e4 LT |
1968 | } |
1969 | ||
c41f8cbd SS |
1970 | /** |
1971 | * zfcp_fsf_open_unit - open unit | |
1972 | * @erp_action: pointer to struct zfcp_erp_action | |
1973 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1974 | */ |
c41f8cbd | 1975 | int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) |
1da177e4 | 1976 | { |
44cc76f2 | 1977 | struct qdio_buffer_element *sbale; |
c41f8cbd | 1978 | struct zfcp_adapter *adapter = erp_action->adapter; |
564e1c86 | 1979 | struct zfcp_qdio *qdio = adapter->qdio; |
c41f8cbd SS |
1980 | struct zfcp_fsf_req *req; |
1981 | int retval = -EIO; | |
1982 | ||
564e1c86 SS |
1983 | spin_lock_bh(&qdio->req_q_lock); |
1984 | if (zfcp_fsf_req_sbal_get(qdio)) | |
1da177e4 | 1985 | goto out; |
1da177e4 | 1986 | |
564e1c86 | 1987 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN, |
a4623c46 | 1988 | adapter->pool.erp_req); |
09a46c6e | 1989 | |
025270f0 | 1990 | if (IS_ERR(req)) { |
c41f8cbd SS |
1991 | retval = PTR_ERR(req); |
1992 | goto out; | |
1993 | } | |
1994 | ||
09a46c6e | 1995 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
564e1c86 | 1996 | sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); |
1da177e4 LT |
1997 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1998 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1999 | ||
c41f8cbd SS |
2000 | req->qtcb->header.port_handle = erp_action->port->handle; |
2001 | req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun; | |
2002 | req->handler = zfcp_fsf_open_unit_handler; | |
2003 | req->data = erp_action->unit; | |
2004 | req->erp_action = erp_action; | |
2005 | erp_action->fsf_req = req; | |
2006 | ||
2007 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) | |
2008 | req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING; | |
2009 | ||
287ac01a | 2010 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 2011 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 2012 | if (retval) { |
c41f8cbd | 2013 | zfcp_fsf_req_free(req); |
1da177e4 | 2014 | erp_action->fsf_req = NULL; |
1da177e4 | 2015 | } |
c41f8cbd | 2016 | out: |
564e1c86 | 2017 | spin_unlock_bh(&qdio->req_q_lock); |
1da177e4 LT |
2018 | return retval; |
2019 | } | |
2020 | ||
c41f8cbd | 2021 | static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2022 | { |
c41f8cbd | 2023 | struct zfcp_unit *unit = req->data; |
1da177e4 | 2024 | |
c41f8cbd | 2025 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 2026 | return; |
1da177e4 | 2027 | |
c41f8cbd | 2028 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 2029 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 2030 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fscuh_1", req); |
c41f8cbd | 2031 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2032 | break; |
1da177e4 | 2033 | case FSF_LUN_HANDLE_NOT_VALID: |
5ffd51a5 | 2034 | zfcp_erp_port_reopen(unit->port, 0, "fscuh_2", req); |
c41f8cbd | 2035 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2036 | break; |
1da177e4 | 2037 | case FSF_PORT_BOXED: |
5ffd51a5 | 2038 | zfcp_erp_port_boxed(unit->port, "fscuh_3", req); |
c41f8cbd SS |
2039 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
2040 | ZFCP_STATUS_FSFREQ_RETRY; | |
1da177e4 | 2041 | break; |
1da177e4 | 2042 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 2043 | switch (req->qtcb->header.fsf_status_qual.word[0]) { |
1da177e4 | 2044 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
6f53a2d2 | 2045 | zfcp_fc_test_link(unit->port); |
c41f8cbd | 2046 | /* fall through */ |
1da177e4 | 2047 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 2048 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
2049 | break; |
2050 | } | |
2051 | break; | |
1da177e4 | 2052 | case FSF_GOOD: |
1da177e4 | 2053 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
1da177e4 | 2054 | break; |
1da177e4 | 2055 | } |
1da177e4 LT |
2056 | } |
2057 | ||
2058 | /** | |
c41f8cbd SS |
2059 | * zfcp_fsf_close_unit - close zfcp unit |
2060 | * @erp_action: pointer to struct zfcp_unit | |
2061 | * Returns: 0 on success, error otherwise | |
1da177e4 | 2062 | */ |
c41f8cbd | 2063 | int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) |
1da177e4 | 2064 | { |
44cc76f2 | 2065 | struct qdio_buffer_element *sbale; |
564e1c86 | 2066 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
2067 | struct zfcp_fsf_req *req; |
2068 | int retval = -EIO; | |
1da177e4 | 2069 | |
564e1c86 SS |
2070 | spin_lock_bh(&qdio->req_q_lock); |
2071 | if (zfcp_fsf_req_sbal_get(qdio)) | |
1da177e4 | 2072 | goto out; |
09a46c6e | 2073 | |
564e1c86 SS |
2074 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN, |
2075 | qdio->adapter->pool.erp_req); | |
09a46c6e | 2076 | |
025270f0 | 2077 | if (IS_ERR(req)) { |
c41f8cbd SS |
2078 | retval = PTR_ERR(req); |
2079 | goto out; | |
2080 | } | |
1da177e4 | 2081 | |
09a46c6e | 2082 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
564e1c86 | 2083 | sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); |
c41f8cbd | 2084 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1da177e4 LT |
2085 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; |
2086 | ||
c41f8cbd SS |
2087 | req->qtcb->header.port_handle = erp_action->port->handle; |
2088 | req->qtcb->header.lun_handle = erp_action->unit->handle; | |
2089 | req->handler = zfcp_fsf_close_unit_handler; | |
2090 | req->data = erp_action->unit; | |
2091 | req->erp_action = erp_action; | |
2092 | erp_action->fsf_req = req; | |
fdf23452 | 2093 | |
287ac01a | 2094 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
2095 | retval = zfcp_fsf_req_send(req); |
2096 | if (retval) { | |
2097 | zfcp_fsf_req_free(req); | |
2098 | erp_action->fsf_req = NULL; | |
2099 | } | |
2100 | out: | |
564e1c86 | 2101 | spin_unlock_bh(&qdio->req_q_lock); |
c41f8cbd | 2102 | return retval; |
1da177e4 LT |
2103 | } |
2104 | ||
c9615858 CS |
2105 | static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat) |
2106 | { | |
2107 | lat_rec->sum += lat; | |
c41f8cbd SS |
2108 | lat_rec->min = min(lat_rec->min, lat); |
2109 | lat_rec->max = max(lat_rec->max, lat); | |
c9615858 CS |
2110 | } |
2111 | ||
c41f8cbd | 2112 | static void zfcp_fsf_req_latency(struct zfcp_fsf_req *req) |
c9615858 CS |
2113 | { |
2114 | struct fsf_qual_latency_info *lat_inf; | |
2115 | struct latency_cont *lat; | |
c41f8cbd | 2116 | struct zfcp_unit *unit = req->unit; |
c9615858 | 2117 | |
c41f8cbd | 2118 | lat_inf = &req->qtcb->prefix.prot_status_qual.latency_info; |
c9615858 | 2119 | |
c41f8cbd | 2120 | switch (req->qtcb->bottom.io.data_direction) { |
c9615858 CS |
2121 | case FSF_DATADIR_READ: |
2122 | lat = &unit->latencies.read; | |
2123 | break; | |
2124 | case FSF_DATADIR_WRITE: | |
2125 | lat = &unit->latencies.write; | |
2126 | break; | |
2127 | case FSF_DATADIR_CMND: | |
2128 | lat = &unit->latencies.cmd; | |
2129 | break; | |
2130 | default: | |
2131 | return; | |
2132 | } | |
2133 | ||
49f0f01c | 2134 | spin_lock(&unit->latencies.lock); |
c9615858 CS |
2135 | zfcp_fsf_update_lat(&lat->channel, lat_inf->channel_lat); |
2136 | zfcp_fsf_update_lat(&lat->fabric, lat_inf->fabric_lat); | |
2137 | lat->counter++; | |
49f0f01c | 2138 | spin_unlock(&unit->latencies.lock); |
1da177e4 LT |
2139 | } |
2140 | ||
0997f1c5 SR |
2141 | #ifdef CONFIG_BLK_DEV_IO_TRACE |
2142 | static void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req) | |
2143 | { | |
2144 | struct fsf_qual_latency_info *lat_inf; | |
2145 | struct scsi_cmnd *scsi_cmnd = (struct scsi_cmnd *)fsf_req->data; | |
2146 | struct request *req = scsi_cmnd->request; | |
2147 | struct zfcp_blk_drv_data trace; | |
2148 | int ticks = fsf_req->adapter->timer_ticks; | |
2149 | ||
2150 | trace.flags = 0; | |
2151 | trace.magic = ZFCP_BLK_DRV_DATA_MAGIC; | |
2152 | if (fsf_req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) { | |
2153 | trace.flags |= ZFCP_BLK_LAT_VALID; | |
2154 | lat_inf = &fsf_req->qtcb->prefix.prot_status_qual.latency_info; | |
2155 | trace.channel_lat = lat_inf->channel_lat * ticks; | |
2156 | trace.fabric_lat = lat_inf->fabric_lat * ticks; | |
2157 | } | |
2158 | if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
2159 | trace.flags |= ZFCP_BLK_REQ_ERROR; | |
42428f74 SS |
2160 | trace.inb_usage = fsf_req->queue_req.qdio_inb_usage; |
2161 | trace.outb_usage = fsf_req->queue_req.qdio_outb_usage; | |
0997f1c5 SR |
2162 | |
2163 | blk_add_driver_data(req->q, req, &trace, sizeof(trace)); | |
2164 | } | |
2165 | #else | |
2166 | static inline void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req) | |
2167 | { | |
2168 | } | |
2169 | #endif | |
2170 | ||
c41f8cbd | 2171 | static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2172 | { |
0ac55aa9 | 2173 | struct scsi_cmnd *scpnt; |
1da177e4 | 2174 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) |
c41f8cbd | 2175 | &(req->qtcb->bottom.io.fcp_rsp); |
1da177e4 | 2176 | u32 sns_len; |
f76af7d7 | 2177 | char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; |
1da177e4 | 2178 | unsigned long flags; |
1da177e4 | 2179 | |
c41f8cbd SS |
2180 | read_lock_irqsave(&req->adapter->abort_lock, flags); |
2181 | ||
0ac55aa9 SS |
2182 | scpnt = req->data; |
2183 | if (unlikely(!scpnt)) { | |
2184 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); | |
2185 | return; | |
2186 | } | |
2187 | ||
c41f8cbd | 2188 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ABORTED)) { |
feac6a07 | 2189 | set_host_byte(scpnt, DID_SOFT_ERROR); |
1da177e4 LT |
2190 | goto skip_fsfstatus; |
2191 | } | |
2192 | ||
c41f8cbd | 2193 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { |
feac6a07 | 2194 | set_host_byte(scpnt, DID_ERROR); |
1da177e4 LT |
2195 | goto skip_fsfstatus; |
2196 | } | |
2197 | ||
feac6a07 | 2198 | set_msg_byte(scpnt, COMMAND_COMPLETE); |
1da177e4 | 2199 | |
1da177e4 | 2200 | scpnt->result |= fcp_rsp_iu->scsi_status; |
1da177e4 | 2201 | |
c41f8cbd SS |
2202 | if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) |
2203 | zfcp_fsf_req_latency(req); | |
c9615858 | 2204 | |
0997f1c5 SR |
2205 | zfcp_fsf_trace_latency(req); |
2206 | ||
1da177e4 | 2207 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) { |
c41f8cbd | 2208 | if (fcp_rsp_info[3] == RSP_CODE_GOOD) |
feac6a07 | 2209 | set_host_byte(scpnt, DID_OK); |
c41f8cbd | 2210 | else { |
feac6a07 | 2211 | set_host_byte(scpnt, DID_ERROR); |
6f71d9bc | 2212 | goto skip_fsfstatus; |
1da177e4 LT |
2213 | } |
2214 | } | |
2215 | ||
1da177e4 | 2216 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_sns_len_valid)) { |
c41f8cbd SS |
2217 | sns_len = FSF_FCP_RSP_SIZE - sizeof(struct fcp_rsp_iu) + |
2218 | fcp_rsp_iu->fcp_rsp_len; | |
1da177e4 | 2219 | sns_len = min(sns_len, (u32) SCSI_SENSE_BUFFERSIZE); |
1da177e4 | 2220 | sns_len = min(sns_len, fcp_rsp_iu->fcp_sns_len); |
1da177e4 | 2221 | |
9d058ecf | 2222 | memcpy(scpnt->sense_buffer, |
1da177e4 | 2223 | zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len); |
1da177e4 LT |
2224 | } |
2225 | ||
1da177e4 | 2226 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_under)) { |
7936a892 FT |
2227 | scsi_set_resid(scpnt, fcp_rsp_iu->fcp_resid); |
2228 | if (scsi_bufflen(scpnt) - scsi_get_resid(scpnt) < | |
2229 | scpnt->underflow) | |
feac6a07 | 2230 | set_host_byte(scpnt, DID_ERROR); |
1da177e4 | 2231 | } |
c41f8cbd | 2232 | skip_fsfstatus: |
8a36e453 | 2233 | if (scpnt->result != 0) |
5771710b | 2234 | zfcp_dbf_scsi_result("erro", 3, req->adapter->dbf, scpnt, req); |
8a36e453 | 2235 | else if (scpnt->retries > 0) |
5771710b | 2236 | zfcp_dbf_scsi_result("retr", 4, req->adapter->dbf, scpnt, req); |
8a36e453 | 2237 | else |
5771710b | 2238 | zfcp_dbf_scsi_result("norm", 6, req->adapter->dbf, scpnt, req); |
1da177e4 | 2239 | |
1da177e4 | 2240 | scpnt->host_scribble = NULL; |
1da177e4 | 2241 | (scpnt->scsi_done) (scpnt); |
1da177e4 LT |
2242 | /* |
2243 | * We must hold this lock until scsi_done has been called. | |
2244 | * Otherwise we may call scsi_done after abort regarding this | |
2245 | * command has completed. | |
2246 | * Note: scsi_done must not block! | |
2247 | */ | |
c41f8cbd | 2248 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); |
1da177e4 LT |
2249 | } |
2250 | ||
c41f8cbd | 2251 | static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2252 | { |
1da177e4 | 2253 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) |
c41f8cbd | 2254 | &(req->qtcb->bottom.io.fcp_rsp); |
f76af7d7 | 2255 | char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; |
1da177e4 | 2256 | |
c41f8cbd SS |
2257 | if ((fcp_rsp_info[3] != RSP_CODE_GOOD) || |
2258 | (req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
2259 | req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
2260 | } | |
2261 | ||
2262 | ||
2263 | static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req) | |
2264 | { | |
2265 | struct zfcp_unit *unit; | |
2266 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
2267 | ||
2268 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)) | |
2269 | unit = req->data; | |
2270 | else | |
2271 | unit = req->unit; | |
2272 | ||
2273 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
1da177e4 | 2274 | goto skip_fsfstatus; |
1da177e4 | 2275 | |
c41f8cbd SS |
2276 | switch (header->fsf_status) { |
2277 | case FSF_HANDLE_MISMATCH: | |
2278 | case FSF_PORT_HANDLE_NOT_VALID: | |
5ffd51a5 | 2279 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fssfch1", req); |
c41f8cbd SS |
2280 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2281 | break; | |
2282 | case FSF_FCPLUN_NOT_VALID: | |
2283 | case FSF_LUN_HANDLE_NOT_VALID: | |
5ffd51a5 | 2284 | zfcp_erp_port_reopen(unit->port, 0, "fssfch2", req); |
c41f8cbd | 2285 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2286 | break; |
c41f8cbd SS |
2287 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
2288 | zfcp_fsf_class_not_supp(req); | |
1da177e4 | 2289 | break; |
c41f8cbd SS |
2290 | case FSF_ACCESS_DENIED: |
2291 | zfcp_fsf_access_denied_unit(req, unit); | |
2292 | break; | |
2293 | case FSF_DIRECTION_INDICATOR_NOT_VALID: | |
2294 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
2295 | "Incorrect direction %d, unit 0x%016Lx on port " |
2296 | "0x%016Lx closed\n", | |
c41f8cbd | 2297 | req->qtcb->bottom.io.data_direction, |
7ba58c9c SS |
2298 | (unsigned long long)unit->fcp_lun, |
2299 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 SS |
2300 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch3", |
2301 | req); | |
c41f8cbd SS |
2302 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2303 | break; | |
2304 | case FSF_CMND_LENGTH_NOT_VALID: | |
2305 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
2306 | "Incorrect CDB length %d, unit 0x%016Lx on " |
2307 | "port 0x%016Lx closed\n", | |
c41f8cbd | 2308 | req->qtcb->bottom.io.fcp_cmnd_length, |
7ba58c9c SS |
2309 | (unsigned long long)unit->fcp_lun, |
2310 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 SS |
2311 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch4", |
2312 | req); | |
c41f8cbd SS |
2313 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2314 | break; | |
2315 | case FSF_PORT_BOXED: | |
5ffd51a5 | 2316 | zfcp_erp_port_boxed(unit->port, "fssfch5", req); |
c41f8cbd SS |
2317 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
2318 | ZFCP_STATUS_FSFREQ_RETRY; | |
2319 | break; | |
2320 | case FSF_LUN_BOXED: | |
5ffd51a5 | 2321 | zfcp_erp_unit_boxed(unit, "fssfch6", req); |
c41f8cbd SS |
2322 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
2323 | ZFCP_STATUS_FSFREQ_RETRY; | |
2324 | break; | |
2325 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
2326 | if (header->fsf_status_qual.word[0] == | |
2327 | FSF_SQ_INVOKE_LINK_TEST_PROCEDURE) | |
6f53a2d2 | 2328 | zfcp_fc_test_link(unit->port); |
c41f8cbd | 2329 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2330 | break; |
1da177e4 | 2331 | } |
c41f8cbd SS |
2332 | skip_fsfstatus: |
2333 | if (req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT) | |
2334 | zfcp_fsf_send_fcp_ctm_handler(req); | |
2335 | else { | |
2336 | zfcp_fsf_send_fcp_command_task_handler(req); | |
2337 | req->unit = NULL; | |
2338 | zfcp_unit_put(unit); | |
2339 | } | |
1da177e4 LT |
2340 | } |
2341 | ||
7ba58c9c SS |
2342 | static void zfcp_set_fcp_dl(struct fcp_cmnd_iu *fcp_cmd, u32 fcp_dl) |
2343 | { | |
2344 | u32 *fcp_dl_ptr; | |
2345 | ||
2346 | /* | |
2347 | * fcp_dl_addr = start address of fcp_cmnd structure + | |
2348 | * size of fixed part + size of dynamically sized add_dcp_cdb field | |
2349 | * SEE FCP-2 documentation | |
2350 | */ | |
2351 | fcp_dl_ptr = (u32 *) ((unsigned char *) &fcp_cmd[1] + | |
2352 | (fcp_cmd->add_fcp_cdb_length << 2)); | |
2353 | *fcp_dl_ptr = fcp_dl; | |
2354 | } | |
2355 | ||
c41f8cbd SS |
2356 | /** |
2357 | * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command) | |
c41f8cbd SS |
2358 | * @unit: unit where command is sent to |
2359 | * @scsi_cmnd: scsi command to be sent | |
1da177e4 | 2360 | */ |
63caf367 CS |
2361 | int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit, |
2362 | struct scsi_cmnd *scsi_cmnd) | |
1da177e4 | 2363 | { |
c41f8cbd SS |
2364 | struct zfcp_fsf_req *req; |
2365 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
bc90c863 | 2366 | unsigned int sbtype = SBAL_FLAGS0_TYPE_READ; |
c41f8cbd | 2367 | int real_bytes, retval = -EIO; |
63caf367 | 2368 | struct zfcp_adapter *adapter = unit->port->adapter; |
564e1c86 | 2369 | struct zfcp_qdio *qdio = adapter->qdio; |
1da177e4 | 2370 | |
c41f8cbd SS |
2371 | if (unlikely(!(atomic_read(&unit->status) & |
2372 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2373 | return -EBUSY; | |
1da177e4 | 2374 | |
564e1c86 SS |
2375 | spin_lock(&qdio->req_q_lock); |
2376 | if (atomic_read(&qdio->req_q.count) <= 0) { | |
2377 | atomic_inc(&qdio->req_q_full); | |
c41f8cbd | 2378 | goto out; |
8fdf30d5 | 2379 | } |
09a46c6e | 2380 | |
564e1c86 | 2381 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND, |
a4623c46 | 2382 | adapter->pool.scsi_req); |
09a46c6e | 2383 | |
025270f0 | 2384 | if (IS_ERR(req)) { |
c41f8cbd SS |
2385 | retval = PTR_ERR(req); |
2386 | goto out; | |
2387 | } | |
2388 | ||
09a46c6e | 2389 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
c41f8cbd SS |
2390 | zfcp_unit_get(unit); |
2391 | req->unit = unit; | |
2392 | req->data = scsi_cmnd; | |
2393 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2394 | req->qtcb->header.lun_handle = unit->handle; | |
2395 | req->qtcb->header.port_handle = unit->port->handle; | |
2396 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
2397 | ||
2398 | scsi_cmnd->host_scribble = (unsigned char *) req->req_id; | |
2399 | ||
2400 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) &(req->qtcb->bottom.io.fcp_cmnd); | |
2401 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
2402 | /* | |
2403 | * set depending on data direction: | |
2404 | * data direction bits in SBALE (SB Type) | |
2405 | * data direction bits in QTCB | |
2406 | * data direction bits in FCP_CMND IU | |
2407 | */ | |
2408 | switch (scsi_cmnd->sc_data_direction) { | |
2409 | case DMA_NONE: | |
2410 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
1da177e4 | 2411 | break; |
c41f8cbd SS |
2412 | case DMA_FROM_DEVICE: |
2413 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ; | |
c41f8cbd SS |
2414 | fcp_cmnd_iu->rddata = 1; |
2415 | break; | |
2416 | case DMA_TO_DEVICE: | |
2417 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE; | |
2418 | sbtype = SBAL_FLAGS0_TYPE_WRITE; | |
2419 | fcp_cmnd_iu->wddata = 1; | |
1da177e4 | 2420 | break; |
c41f8cbd | 2421 | case DMA_BIDIRECTIONAL: |
c41f8cbd | 2422 | goto failed_scsi_cmnd; |
1da177e4 LT |
2423 | } |
2424 | ||
c41f8cbd SS |
2425 | if (likely((scsi_cmnd->device->simple_tags) || |
2426 | ((atomic_read(&unit->status) & ZFCP_STATUS_UNIT_READONLY) && | |
2427 | (atomic_read(&unit->status) & ZFCP_STATUS_UNIT_SHARED)))) | |
2428 | fcp_cmnd_iu->task_attribute = SIMPLE_Q; | |
2429 | else | |
2430 | fcp_cmnd_iu->task_attribute = UNTAGGED; | |
1da177e4 | 2431 | |
c41f8cbd SS |
2432 | if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH)) |
2433 | fcp_cmnd_iu->add_fcp_cdb_length = | |
2434 | (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2; | |
1da177e4 | 2435 | |
c41f8cbd | 2436 | memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); |
45633fdc | 2437 | |
c41f8cbd | 2438 | req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + |
7ba58c9c | 2439 | fcp_cmnd_iu->add_fcp_cdb_length + sizeof(u32); |
1da177e4 | 2440 | |
564e1c86 | 2441 | real_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->queue_req, sbtype, |
c41f8cbd SS |
2442 | scsi_sglist(scsi_cmnd), |
2443 | FSF_MAX_SBALS_PER_REQ); | |
2444 | if (unlikely(real_bytes < 0)) { | |
42428f74 | 2445 | if (req->queue_req.sbal_number >= FSF_MAX_SBALS_PER_REQ) { |
c41f8cbd | 2446 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
2447 | "Oversize data package, unit 0x%016Lx " |
2448 | "on port 0x%016Lx closed\n", | |
7ba58c9c SS |
2449 | (unsigned long long)unit->fcp_lun, |
2450 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 2451 | zfcp_erp_unit_shutdown(unit, 0, "fssfct1", req); |
c41f8cbd SS |
2452 | retval = -EINVAL; |
2453 | } | |
2454 | goto failed_scsi_cmnd; | |
1da177e4 | 2455 | } |
1da177e4 | 2456 | |
c41f8cbd | 2457 | zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes); |
1da177e4 | 2458 | |
c41f8cbd SS |
2459 | retval = zfcp_fsf_req_send(req); |
2460 | if (unlikely(retval)) | |
2461 | goto failed_scsi_cmnd; | |
1da177e4 | 2462 | |
c41f8cbd | 2463 | goto out; |
1da177e4 | 2464 | |
c41f8cbd SS |
2465 | failed_scsi_cmnd: |
2466 | zfcp_unit_put(unit); | |
2467 | zfcp_fsf_req_free(req); | |
2468 | scsi_cmnd->host_scribble = NULL; | |
2469 | out: | |
564e1c86 | 2470 | spin_unlock(&qdio->req_q_lock); |
c41f8cbd | 2471 | return retval; |
1da177e4 LT |
2472 | } |
2473 | ||
2474 | /** | |
c41f8cbd | 2475 | * zfcp_fsf_send_fcp_ctm - send SCSI task management command |
c41f8cbd SS |
2476 | * @unit: pointer to struct zfcp_unit |
2477 | * @tm_flags: unsigned byte for task management flags | |
c41f8cbd | 2478 | * Returns: on success pointer to struct fsf_req, NULL otherwise |
1da177e4 | 2479 | */ |
63caf367 | 2480 | struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *unit, u8 tm_flags) |
1da177e4 | 2481 | { |
44cc76f2 | 2482 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
2483 | struct zfcp_fsf_req *req = NULL; |
2484 | struct fcp_cmnd_iu *fcp_cmnd_iu; | |
564e1c86 | 2485 | struct zfcp_qdio *qdio = unit->port->adapter->qdio; |
1da177e4 | 2486 | |
c41f8cbd SS |
2487 | if (unlikely(!(atomic_read(&unit->status) & |
2488 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2489 | return NULL; | |
1da177e4 | 2490 | |
564e1c86 SS |
2491 | spin_lock_bh(&qdio->req_q_lock); |
2492 | if (zfcp_fsf_req_sbal_get(qdio)) | |
c41f8cbd | 2493 | goto out; |
09a46c6e | 2494 | |
564e1c86 SS |
2495 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND, |
2496 | qdio->adapter->pool.scsi_req); | |
09a46c6e | 2497 | |
633528c3 SS |
2498 | if (IS_ERR(req)) { |
2499 | req = NULL; | |
c41f8cbd | 2500 | goto out; |
633528c3 | 2501 | } |
1da177e4 | 2502 | |
c41f8cbd SS |
2503 | req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT; |
2504 | req->data = unit; | |
2505 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2506 | req->qtcb->header.lun_handle = unit->handle; | |
2507 | req->qtcb->header.port_handle = unit->port->handle; | |
2508 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
2509 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
2510 | req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + | |
7ba58c9c | 2511 | sizeof(u32); |
c41f8cbd | 2512 | |
564e1c86 | 2513 | sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); |
c41f8cbd SS |
2514 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE; |
2515 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 2516 | |
c41f8cbd SS |
2517 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) &req->qtcb->bottom.io.fcp_cmnd; |
2518 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; | |
2519 | fcp_cmnd_iu->task_management_flags = tm_flags; | |
1da177e4 | 2520 | |
c41f8cbd SS |
2521 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); |
2522 | if (!zfcp_fsf_req_send(req)) | |
2523 | goto out; | |
1da177e4 | 2524 | |
c41f8cbd SS |
2525 | zfcp_fsf_req_free(req); |
2526 | req = NULL; | |
2527 | out: | |
564e1c86 | 2528 | spin_unlock_bh(&qdio->req_q_lock); |
c41f8cbd SS |
2529 | return req; |
2530 | } | |
1da177e4 | 2531 | |
c41f8cbd SS |
2532 | static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req) |
2533 | { | |
1da177e4 LT |
2534 | } |
2535 | ||
c41f8cbd SS |
2536 | /** |
2537 | * zfcp_fsf_control_file - control file upload/download | |
2538 | * @adapter: pointer to struct zfcp_adapter | |
2539 | * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc | |
2540 | * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise | |
1da177e4 | 2541 | */ |
c41f8cbd SS |
2542 | struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, |
2543 | struct zfcp_fsf_cfdc *fsf_cfdc) | |
1da177e4 | 2544 | { |
44cc76f2 | 2545 | struct qdio_buffer_element *sbale; |
564e1c86 | 2546 | struct zfcp_qdio *qdio = adapter->qdio; |
c41f8cbd SS |
2547 | struct zfcp_fsf_req *req = NULL; |
2548 | struct fsf_qtcb_bottom_support *bottom; | |
2549 | int direction, retval = -EIO, bytes; | |
2550 | ||
2551 | if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) | |
2552 | return ERR_PTR(-EOPNOTSUPP); | |
2553 | ||
2554 | switch (fsf_cfdc->command) { | |
2555 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
2556 | direction = SBAL_FLAGS0_TYPE_WRITE; | |
2557 | break; | |
2558 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
2559 | direction = SBAL_FLAGS0_TYPE_READ; | |
2560 | break; | |
2561 | default: | |
2562 | return ERR_PTR(-EINVAL); | |
2563 | } | |
1da177e4 | 2564 | |
564e1c86 SS |
2565 | spin_lock_bh(&qdio->req_q_lock); |
2566 | if (zfcp_fsf_req_sbal_get(qdio)) | |
c41f8cbd | 2567 | goto out; |
1da177e4 | 2568 | |
564e1c86 | 2569 | req = zfcp_fsf_req_create(qdio, fsf_cfdc->command, NULL); |
025270f0 | 2570 | if (IS_ERR(req)) { |
c41f8cbd SS |
2571 | retval = -EPERM; |
2572 | goto out; | |
2573 | } | |
1da177e4 | 2574 | |
c41f8cbd | 2575 | req->handler = zfcp_fsf_control_file_handler; |
1da177e4 | 2576 | |
564e1c86 | 2577 | sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req); |
c41f8cbd | 2578 | sbale[0].flags |= direction; |
8a36e453 | 2579 | |
c41f8cbd SS |
2580 | bottom = &req->qtcb->bottom.support; |
2581 | bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE; | |
2582 | bottom->option = fsf_cfdc->option; | |
8a36e453 | 2583 | |
564e1c86 SS |
2584 | bytes = zfcp_qdio_sbals_from_sg(qdio, &req->queue_req, |
2585 | direction, fsf_cfdc->sg, | |
2586 | FSF_MAX_SBALS_PER_REQ); | |
c41f8cbd | 2587 | if (bytes != ZFCP_CFDC_MAX_SIZE) { |
c41f8cbd SS |
2588 | zfcp_fsf_req_free(req); |
2589 | goto out; | |
2590 | } | |
1da177e4 | 2591 | |
c41f8cbd SS |
2592 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
2593 | retval = zfcp_fsf_req_send(req); | |
2594 | out: | |
564e1c86 | 2595 | spin_unlock_bh(&qdio->req_q_lock); |
8a36e453 | 2596 | |
c41f8cbd | 2597 | if (!retval) { |
058b8647 | 2598 | wait_for_completion(&req->completion); |
c41f8cbd | 2599 | return req; |
1da177e4 | 2600 | } |
c41f8cbd | 2601 | return ERR_PTR(retval); |
1da177e4 | 2602 | } |
bd63eaf4 SS |
2603 | |
2604 | /** | |
2605 | * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO | |
2606 | * @adapter: pointer to struct zfcp_adapter | |
2607 | * @sbal_idx: response queue index of SBAL to be processed | |
2608 | */ | |
564e1c86 | 2609 | void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx) |
bd63eaf4 | 2610 | { |
564e1c86 SS |
2611 | struct zfcp_adapter *adapter = qdio->adapter; |
2612 | struct qdio_buffer *sbal = qdio->resp_q.sbal[sbal_idx]; | |
bd63eaf4 SS |
2613 | struct qdio_buffer_element *sbale; |
2614 | struct zfcp_fsf_req *fsf_req; | |
2615 | unsigned long flags, req_id; | |
2616 | int idx; | |
2617 | ||
2618 | for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) { | |
2619 | ||
2620 | sbale = &sbal->element[idx]; | |
2621 | req_id = (unsigned long) sbale->addr; | |
2622 | spin_lock_irqsave(&adapter->req_list_lock, flags); | |
2623 | fsf_req = zfcp_reqlist_find(adapter, req_id); | |
2624 | ||
2625 | if (!fsf_req) | |
2626 | /* | |
2627 | * Unknown request means that we have potentially memory | |
2628 | * corruption and must stop the machine immediately. | |
2629 | */ | |
2630 | panic("error: unknown req_id (%lx) on adapter %s.\n", | |
2631 | req_id, dev_name(&adapter->ccw_device->dev)); | |
2632 | ||
2633 | list_del(&fsf_req->list); | |
2634 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); | |
2635 | ||
42428f74 SS |
2636 | fsf_req->queue_req.sbal_response = sbal_idx; |
2637 | fsf_req->queue_req.qdio_inb_usage = | |
564e1c86 | 2638 | atomic_read(&qdio->resp_q.count); |
bd63eaf4 SS |
2639 | zfcp_fsf_req_complete(fsf_req); |
2640 | ||
2641 | if (likely(sbale->flags & SBAL_FLAGS_LAST_ENTRY)) | |
2642 | break; | |
2643 | } | |
2644 | } |