Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
553448f6 | 2 | * zfcp device driver |
1da177e4 | 3 | * |
553448f6 | 4 | * Implementation of FSF commands. |
1da177e4 | 5 | * |
615f59e0 | 6 | * Copyright IBM Corporation 2002, 2010 |
1da177e4 LT |
7 | */ |
8 | ||
ecf39d42 CS |
9 | #define KMSG_COMPONENT "zfcp" |
10 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt | |
11 | ||
0997f1c5 | 12 | #include <linux/blktrace_api.h> |
5a0e3ad6 | 13 | #include <linux/slab.h> |
9d05ce2c | 14 | #include <scsi/fc/fc_els.h> |
1da177e4 | 15 | #include "zfcp_ext.h" |
4318e08c | 16 | #include "zfcp_fc.h" |
dcd20e23 | 17 | #include "zfcp_dbf.h" |
34c2b712 | 18 | #include "zfcp_qdio.h" |
b6bd2fb9 | 19 | #include "zfcp_reqlist.h" |
1da177e4 | 20 | |
287ac01a CS |
21 | static void zfcp_fsf_request_timeout_handler(unsigned long data) |
22 | { | |
23 | struct zfcp_adapter *adapter = (struct zfcp_adapter *) data; | |
5ffd51a5 SS |
24 | zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, |
25 | "fsrth_1", NULL); | |
287ac01a CS |
26 | } |
27 | ||
28 | static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req, | |
29 | unsigned long timeout) | |
30 | { | |
31 | fsf_req->timer.function = zfcp_fsf_request_timeout_handler; | |
32 | fsf_req->timer.data = (unsigned long) fsf_req->adapter; | |
33 | fsf_req->timer.expires = jiffies + timeout; | |
34 | add_timer(&fsf_req->timer); | |
35 | } | |
36 | ||
37 | static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req) | |
38 | { | |
39 | BUG_ON(!fsf_req->erp_action); | |
40 | fsf_req->timer.function = zfcp_erp_timeout_handler; | |
41 | fsf_req->timer.data = (unsigned long) fsf_req->erp_action; | |
42 | fsf_req->timer.expires = jiffies + 30 * HZ; | |
43 | add_timer(&fsf_req->timer); | |
44 | } | |
45 | ||
1da177e4 LT |
46 | /* association between FSF command and FSF QTCB type */ |
47 | static u32 fsf_qtcb_type[] = { | |
48 | [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND, | |
49 | [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND, | |
50 | [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND, | |
51 | [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND, | |
52 | [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND, | |
53 | [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND, | |
54 | [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND, | |
55 | [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND, | |
56 | [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND, | |
57 | [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND, | |
58 | [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND, | |
59 | [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND, | |
60 | [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND | |
61 | }; | |
62 | ||
553448f6 CS |
63 | static void zfcp_act_eval_err(struct zfcp_adapter *adapter, u32 table) |
64 | { | |
c41f8cbd | 65 | u16 subtable = table >> 16; |
553448f6 | 66 | u16 rule = table & 0xffff; |
ff3b24fa | 67 | const char *act_type[] = { "unknown", "OS", "WWPN", "DID", "LUN" }; |
553448f6 | 68 | |
ff3b24fa | 69 | if (subtable && subtable < ARRAY_SIZE(act_type)) |
553448f6 | 70 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
71 | "Access denied according to ACT rule type %s, " |
72 | "rule %d\n", act_type[subtable], rule); | |
553448f6 CS |
73 | } |
74 | ||
75 | static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req, | |
76 | struct zfcp_port *port) | |
77 | { | |
78 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
79 | dev_warn(&req->adapter->ccw_device->dev, | |
ff3b24fa | 80 | "Access denied to port 0x%016Lx\n", |
7ba58c9c | 81 | (unsigned long long)port->wwpn); |
553448f6 CS |
82 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); |
83 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); | |
5ffd51a5 | 84 | zfcp_erp_port_access_denied(port, "fspad_1", req); |
553448f6 CS |
85 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
86 | } | |
87 | ||
88 | static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req *req, | |
89 | struct zfcp_unit *unit) | |
90 | { | |
91 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
92 | dev_warn(&req->adapter->ccw_device->dev, | |
ff3b24fa | 93 | "Access denied to unit 0x%016Lx on port 0x%016Lx\n", |
7ba58c9c SS |
94 | (unsigned long long)unit->fcp_lun, |
95 | (unsigned long long)unit->port->wwpn); | |
553448f6 CS |
96 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); |
97 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); | |
5ffd51a5 | 98 | zfcp_erp_unit_access_denied(unit, "fsuad_1", req); |
553448f6 CS |
99 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
100 | } | |
101 | ||
102 | static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req) | |
103 | { | |
ff3b24fa CS |
104 | dev_err(&req->adapter->ccw_device->dev, "FCP device not " |
105 | "operational because of an unsupported FC class\n"); | |
5ffd51a5 | 106 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fscns_1", req); |
553448f6 CS |
107 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
108 | } | |
109 | ||
c41f8cbd SS |
110 | /** |
111 | * zfcp_fsf_req_free - free memory used by fsf request | |
112 | * @fsf_req: pointer to struct zfcp_fsf_req | |
1da177e4 | 113 | */ |
c41f8cbd | 114 | void zfcp_fsf_req_free(struct zfcp_fsf_req *req) |
1da177e4 | 115 | { |
c41f8cbd | 116 | if (likely(req->pool)) { |
a4623c46 SS |
117 | if (likely(req->qtcb)) |
118 | mempool_free(req->qtcb, req->adapter->pool.qtcb_pool); | |
c41f8cbd | 119 | mempool_free(req, req->pool); |
dd52e0ea HC |
120 | return; |
121 | } | |
122 | ||
a4623c46 SS |
123 | if (likely(req->qtcb)) |
124 | kmem_cache_free(zfcp_data.qtcb_cache, req->qtcb); | |
125 | kfree(req); | |
1da177e4 LT |
126 | } |
127 | ||
c41f8cbd | 128 | static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req) |
1da177e4 | 129 | { |
ecf0c772 | 130 | unsigned long flags; |
c41f8cbd SS |
131 | struct fsf_status_read_buffer *sr_buf = req->data; |
132 | struct zfcp_adapter *adapter = req->adapter; | |
133 | struct zfcp_port *port; | |
800c0cad | 134 | int d_id = ntoh24(sr_buf->d_id); |
1da177e4 | 135 | |
ecf0c772 SS |
136 | read_lock_irqsave(&adapter->port_list_lock, flags); |
137 | list_for_each_entry(port, &adapter->port_list, list) | |
c41f8cbd | 138 | if (port->d_id == d_id) { |
5ffd51a5 | 139 | zfcp_erp_port_reopen(port, 0, "fssrpc1", req); |
ecf0c772 | 140 | break; |
c41f8cbd | 141 | } |
ecf0c772 | 142 | read_unlock_irqrestore(&adapter->port_list_lock, flags); |
1da177e4 LT |
143 | } |
144 | ||
5ffd51a5 | 145 | static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, char *id, |
c41f8cbd | 146 | struct fsf_link_down_info *link_down) |
aef4a983 | 147 | { |
c41f8cbd | 148 | struct zfcp_adapter *adapter = req->adapter; |
698ec016 | 149 | |
c41f8cbd | 150 | if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED) |
ee69ab7a MS |
151 | return; |
152 | ||
153 | atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status); | |
70932935 | 154 | |
a2fa0aed | 155 | zfcp_scsi_schedule_rports_block(adapter); |
ee69ab7a | 156 | |
c41f8cbd | 157 | if (!link_down) |
2f8f3ed5 | 158 | goto out; |
ee69ab7a | 159 | |
aef4a983 MS |
160 | switch (link_down->error_code) { |
161 | case FSF_PSQ_LINK_NO_LIGHT: | |
c41f8cbd | 162 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
163 | "There is no light signal from the local " |
164 | "fibre channel cable\n"); | |
aef4a983 MS |
165 | break; |
166 | case FSF_PSQ_LINK_WRAP_PLUG: | |
c41f8cbd | 167 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
168 | "There is a wrap plug instead of a fibre " |
169 | "channel cable\n"); | |
aef4a983 MS |
170 | break; |
171 | case FSF_PSQ_LINK_NO_FCP: | |
c41f8cbd | 172 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
173 | "The adjacent fibre channel node does not " |
174 | "support FCP\n"); | |
aef4a983 MS |
175 | break; |
176 | case FSF_PSQ_LINK_FIRMWARE_UPDATE: | |
c41f8cbd | 177 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
178 | "The FCP device is suspended because of a " |
179 | "firmware update\n"); | |
553448f6 | 180 | break; |
aef4a983 | 181 | case FSF_PSQ_LINK_INVALID_WWPN: |
c41f8cbd | 182 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
183 | "The FCP device detected a WWPN that is " |
184 | "duplicate or not valid\n"); | |
aef4a983 MS |
185 | break; |
186 | case FSF_PSQ_LINK_NO_NPIV_SUPPORT: | |
c41f8cbd | 187 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 188 | "The fibre channel fabric does not support NPIV\n"); |
aef4a983 MS |
189 | break; |
190 | case FSF_PSQ_LINK_NO_FCP_RESOURCES: | |
c41f8cbd | 191 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 192 | "The FCP adapter cannot support more NPIV ports\n"); |
aef4a983 MS |
193 | break; |
194 | case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: | |
c41f8cbd | 195 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
196 | "The adjacent switch cannot support " |
197 | "more NPIV ports\n"); | |
aef4a983 MS |
198 | break; |
199 | case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: | |
c41f8cbd | 200 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
201 | "The FCP adapter could not log in to the " |
202 | "fibre channel fabric\n"); | |
aef4a983 MS |
203 | break; |
204 | case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: | |
c41f8cbd | 205 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
206 | "The WWPN assignment file on the FCP adapter " |
207 | "has been damaged\n"); | |
aef4a983 MS |
208 | break; |
209 | case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: | |
c41f8cbd | 210 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
211 | "The mode table on the FCP adapter " |
212 | "has been damaged\n"); | |
aef4a983 MS |
213 | break; |
214 | case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: | |
c41f8cbd | 215 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
216 | "All NPIV ports on the FCP adapter have " |
217 | "been assigned\n"); | |
aef4a983 MS |
218 | break; |
219 | default: | |
c41f8cbd | 220 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
221 | "The link between the FCP adapter and " |
222 | "the FC fabric is down\n"); | |
aef4a983 | 223 | } |
c41f8cbd SS |
224 | out: |
225 | zfcp_erp_adapter_failed(adapter, id, req); | |
aef4a983 MS |
226 | } |
227 | ||
c41f8cbd | 228 | static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req) |
1da177e4 | 229 | { |
c41f8cbd SS |
230 | struct fsf_status_read_buffer *sr_buf = req->data; |
231 | struct fsf_link_down_info *ldi = | |
232 | (struct fsf_link_down_info *) &sr_buf->payload; | |
1da177e4 | 233 | |
c41f8cbd SS |
234 | switch (sr_buf->status_subtype) { |
235 | case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: | |
5ffd51a5 | 236 | zfcp_fsf_link_down_info_eval(req, "fssrld1", ldi); |
1da177e4 | 237 | break; |
c41f8cbd | 238 | case FSF_STATUS_READ_SUB_FDISC_FAILED: |
5ffd51a5 | 239 | zfcp_fsf_link_down_info_eval(req, "fssrld2", ldi); |
1da177e4 | 240 | break; |
c41f8cbd | 241 | case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE: |
5ffd51a5 | 242 | zfcp_fsf_link_down_info_eval(req, "fssrld3", NULL); |
c41f8cbd SS |
243 | }; |
244 | } | |
1da177e4 | 245 | |
c41f8cbd SS |
246 | static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) |
247 | { | |
248 | struct zfcp_adapter *adapter = req->adapter; | |
249 | struct fsf_status_read_buffer *sr_buf = req->data; | |
1da177e4 | 250 | |
c41f8cbd | 251 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
5771710b | 252 | zfcp_dbf_hba_fsf_unsol("dism", adapter->dbf, sr_buf); |
a4623c46 | 253 | mempool_free(sr_buf, adapter->pool.status_read_data); |
c41f8cbd SS |
254 | zfcp_fsf_req_free(req); |
255 | return; | |
256 | } | |
1da177e4 | 257 | |
5771710b | 258 | zfcp_dbf_hba_fsf_unsol("read", adapter->dbf, sr_buf); |
1da177e4 | 259 | |
c41f8cbd SS |
260 | switch (sr_buf->status_type) { |
261 | case FSF_STATUS_READ_PORT_CLOSED: | |
262 | zfcp_fsf_status_read_port_closed(req); | |
1da177e4 | 263 | break; |
c41f8cbd SS |
264 | case FSF_STATUS_READ_INCOMING_ELS: |
265 | zfcp_fc_incoming_els(req); | |
1da177e4 | 266 | break; |
c41f8cbd | 267 | case FSF_STATUS_READ_SENSE_DATA_AVAIL: |
1da177e4 | 268 | break; |
c41f8cbd | 269 | case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: |
ff3b24fa CS |
270 | dev_warn(&adapter->ccw_device->dev, |
271 | "The error threshold for checksum statistics " | |
272 | "has been exceeded\n"); | |
5771710b | 273 | zfcp_dbf_hba_berr(adapter->dbf, req); |
1da177e4 | 274 | break; |
c41f8cbd SS |
275 | case FSF_STATUS_READ_LINK_DOWN: |
276 | zfcp_fsf_status_read_link_down(req); | |
277 | break; | |
278 | case FSF_STATUS_READ_LINK_UP: | |
279 | dev_info(&adapter->ccw_device->dev, | |
ff3b24fa | 280 | "The local link has been restored\n"); |
c41f8cbd | 281 | /* All ports should be marked as ready to run again */ |
5ffd51a5 | 282 | zfcp_erp_modify_adapter_status(adapter, "fssrh_1", NULL, |
c41f8cbd SS |
283 | ZFCP_STATUS_COMMON_RUNNING, |
284 | ZFCP_SET); | |
285 | zfcp_erp_adapter_reopen(adapter, | |
286 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
287 | ZFCP_STATUS_COMMON_ERP_FAILED, | |
5ffd51a5 | 288 | "fssrh_2", req); |
c41f8cbd SS |
289 | break; |
290 | case FSF_STATUS_READ_NOTIFICATION_LOST: | |
291 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED) | |
5ffd51a5 SS |
292 | zfcp_erp_adapter_access_changed(adapter, "fssrh_3", |
293 | req); | |
c41f8cbd | 294 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS) |
9eae07ef | 295 | queue_work(adapter->work_queue, &adapter->scan_work); |
c41f8cbd SS |
296 | break; |
297 | case FSF_STATUS_READ_CFDC_UPDATED: | |
5ffd51a5 | 298 | zfcp_erp_adapter_access_changed(adapter, "fssrh_4", req); |
c41f8cbd SS |
299 | break; |
300 | case FSF_STATUS_READ_FEATURE_UPDATE_ALERT: | |
301 | adapter->adapter_features = sr_buf->payload.word[0]; | |
1da177e4 | 302 | break; |
1da177e4 LT |
303 | } |
304 | ||
a4623c46 | 305 | mempool_free(sr_buf, adapter->pool.status_read_data); |
c41f8cbd | 306 | zfcp_fsf_req_free(req); |
1da177e4 | 307 | |
c41f8cbd | 308 | atomic_inc(&adapter->stat_miss); |
4544683a | 309 | queue_work(adapter->work_queue, &adapter->stat_work); |
c41f8cbd | 310 | } |
1da177e4 | 311 | |
c41f8cbd SS |
312 | static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req) |
313 | { | |
314 | switch (req->qtcb->header.fsf_status_qual.word[0]) { | |
315 | case FSF_SQ_FCP_RSP_AVAILABLE: | |
316 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
317 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
318 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
319 | return; | |
320 | case FSF_SQ_COMMAND_ABORTED: | |
c41f8cbd SS |
321 | break; |
322 | case FSF_SQ_NO_RECOM: | |
323 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
324 | "The FCP adapter reported a problem " |
325 | "that cannot be recovered\n"); | |
5ffd51a5 | 326 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1", req); |
c41f8cbd SS |
327 | break; |
328 | } | |
329 | /* all non-return stats set FSFREQ_ERROR*/ | |
330 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
331 | } |
332 | ||
c41f8cbd | 333 | static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req) |
1da177e4 | 334 | { |
c41f8cbd SS |
335 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
336 | return; | |
1da177e4 | 337 | |
c41f8cbd SS |
338 | switch (req->qtcb->header.fsf_status) { |
339 | case FSF_UNKNOWN_COMMAND: | |
340 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa | 341 | "The FCP adapter does not recognize the command 0x%x\n", |
c41f8cbd | 342 | req->qtcb->header.fsf_command); |
5ffd51a5 | 343 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1", req); |
c41f8cbd SS |
344 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
345 | break; | |
346 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
347 | zfcp_fsf_fsfstatus_qual_eval(req); | |
348 | break; | |
349 | } | |
350 | } | |
1da177e4 | 351 | |
c41f8cbd SS |
352 | static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) |
353 | { | |
354 | struct zfcp_adapter *adapter = req->adapter; | |
355 | struct fsf_qtcb *qtcb = req->qtcb; | |
356 | union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual; | |
1da177e4 | 357 | |
5771710b | 358 | zfcp_dbf_hba_fsf_response(req); |
1da177e4 | 359 | |
c41f8cbd | 360 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
4c571c65 | 361 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
362 | return; |
363 | } | |
1da177e4 | 364 | |
c41f8cbd SS |
365 | switch (qtcb->prefix.prot_status) { |
366 | case FSF_PROT_GOOD: | |
367 | case FSF_PROT_FSF_STATUS_PRESENTED: | |
368 | return; | |
369 | case FSF_PROT_QTCB_VERSION_ERROR: | |
370 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
371 | "QTCB version 0x%x not supported by FCP adapter " |
372 | "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION, | |
373 | psq->word[0], psq->word[1]); | |
5ffd51a5 | 374 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1", req); |
c41f8cbd SS |
375 | break; |
376 | case FSF_PROT_ERROR_STATE: | |
377 | case FSF_PROT_SEQ_NUMB_ERROR: | |
5ffd51a5 | 378 | zfcp_erp_adapter_reopen(adapter, 0, "fspse_2", req); |
4c571c65 | 379 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
380 | break; |
381 | case FSF_PROT_UNSUPP_QTCB_TYPE: | |
382 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 383 | "The QTCB type is not supported by the FCP adapter\n"); |
5ffd51a5 | 384 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3", req); |
c41f8cbd SS |
385 | break; |
386 | case FSF_PROT_HOST_CONNECTION_INITIALIZING: | |
387 | atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT, | |
388 | &adapter->status); | |
389 | break; | |
390 | case FSF_PROT_DUPLICATE_REQUEST_ID: | |
391 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 392 | "0x%Lx is an ambiguous request identifier\n", |
c41f8cbd | 393 | (unsigned long long)qtcb->bottom.support.req_handle); |
5ffd51a5 | 394 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_4", req); |
c41f8cbd SS |
395 | break; |
396 | case FSF_PROT_LINK_DOWN: | |
5ffd51a5 SS |
397 | zfcp_fsf_link_down_info_eval(req, "fspse_5", |
398 | &psq->link_down_info); | |
452b505c | 399 | /* go through reopen to flush pending requests */ |
5ffd51a5 | 400 | zfcp_erp_adapter_reopen(adapter, 0, "fspse_6", req); |
c41f8cbd SS |
401 | break; |
402 | case FSF_PROT_REEST_QUEUE: | |
403 | /* All ports should be marked as ready to run again */ | |
5ffd51a5 | 404 | zfcp_erp_modify_adapter_status(adapter, "fspse_7", NULL, |
c41f8cbd SS |
405 | ZFCP_STATUS_COMMON_RUNNING, |
406 | ZFCP_SET); | |
407 | zfcp_erp_adapter_reopen(adapter, | |
408 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
5ffd51a5 SS |
409 | ZFCP_STATUS_COMMON_ERP_FAILED, |
410 | "fspse_8", req); | |
c41f8cbd SS |
411 | break; |
412 | default: | |
413 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 414 | "0x%x is not a valid transfer protocol status\n", |
c41f8cbd | 415 | qtcb->prefix.prot_status); |
5ffd51a5 | 416 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9", req); |
c41f8cbd SS |
417 | } |
418 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
419 | } |
420 | ||
c41f8cbd SS |
421 | /** |
422 | * zfcp_fsf_req_complete - process completion of a FSF request | |
423 | * @fsf_req: The FSF request that has been completed. | |
424 | * | |
425 | * When a request has been completed either from the FCP adapter, | |
426 | * or it has been dismissed due to a queue shutdown, this function | |
427 | * is called to process the completion status and trigger further | |
428 | * events related to the FSF request. | |
429 | */ | |
bd63eaf4 | 430 | static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req) |
1da177e4 | 431 | { |
c41f8cbd SS |
432 | if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) { |
433 | zfcp_fsf_status_read_handler(req); | |
434 | return; | |
435 | } | |
1da177e4 | 436 | |
c41f8cbd SS |
437 | del_timer(&req->timer); |
438 | zfcp_fsf_protstatus_eval(req); | |
439 | zfcp_fsf_fsfstatus_eval(req); | |
440 | req->handler(req); | |
1da177e4 | 441 | |
c41f8cbd | 442 | if (req->erp_action) |
287ac01a | 443 | zfcp_erp_notify(req->erp_action, 0); |
1da177e4 | 444 | |
c41f8cbd SS |
445 | if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP)) |
446 | zfcp_fsf_req_free(req); | |
447 | else | |
058b8647 | 448 | complete(&req->completion); |
c41f8cbd | 449 | } |
1da177e4 | 450 | |
bd63eaf4 SS |
451 | /** |
452 | * zfcp_fsf_req_dismiss_all - dismiss all fsf requests | |
453 | * @adapter: pointer to struct zfcp_adapter | |
454 | * | |
455 | * Never ever call this without shutting down the adapter first. | |
456 | * Otherwise the adapter would continue using and corrupting s390 storage. | |
457 | * Included BUG_ON() call to ensure this is done. | |
458 | * ERP is supposed to be the only user of this function. | |
459 | */ | |
460 | void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter) | |
461 | { | |
462 | struct zfcp_fsf_req *req, *tmp; | |
bd63eaf4 | 463 | LIST_HEAD(remove_queue); |
bd63eaf4 SS |
464 | |
465 | BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP); | |
b6bd2fb9 | 466 | zfcp_reqlist_move(adapter->req_list, &remove_queue); |
bd63eaf4 SS |
467 | |
468 | list_for_each_entry_safe(req, tmp, &remove_queue, list) { | |
469 | list_del(&req->list); | |
470 | req->status |= ZFCP_STATUS_FSFREQ_DISMISSED; | |
471 | zfcp_fsf_req_complete(req); | |
472 | } | |
473 | } | |
474 | ||
c41f8cbd SS |
475 | static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req) |
476 | { | |
9d05ce2c | 477 | struct fsf_qtcb_bottom_config *bottom = &req->qtcb->bottom.config; |
c41f8cbd SS |
478 | struct zfcp_adapter *adapter = req->adapter; |
479 | struct Scsi_Host *shost = adapter->scsi_host; | |
9d05ce2c | 480 | struct fc_els_flogi *nsp, *plogi; |
1da177e4 | 481 | |
9d05ce2c CS |
482 | /* adjust pointers for missing command code */ |
483 | nsp = (struct fc_els_flogi *) ((u8 *)&bottom->nport_serv_param | |
484 | - sizeof(u32)); | |
485 | plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload | |
486 | - sizeof(u32)); | |
1da177e4 | 487 | |
c41f8cbd SS |
488 | if (req->data) |
489 | memcpy(req->data, bottom, sizeof(*bottom)); | |
490 | ||
9d05ce2c CS |
491 | fc_host_port_name(shost) = nsp->fl_wwpn; |
492 | fc_host_node_name(shost) = nsp->fl_wwnn; | |
800c0cad | 493 | fc_host_port_id(shost) = ntoh24(bottom->s_id); |
c41f8cbd SS |
494 | fc_host_speed(shost) = bottom->fc_link_speed; |
495 | fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3; | |
496 | ||
497 | adapter->hydra_version = bottom->adapter_type; | |
498 | adapter->timer_ticks = bottom->timer_interval; | |
499 | ||
500 | if (fc_host_permanent_port_name(shost) == -1) | |
501 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
502 | ||
503 | switch (bottom->fc_topology) { | |
504 | case FSF_TOPO_P2P: | |
800c0cad | 505 | adapter->peer_d_id = ntoh24(bottom->peer_d_id); |
9d05ce2c CS |
506 | adapter->peer_wwpn = plogi->fl_wwpn; |
507 | adapter->peer_wwnn = plogi->fl_wwnn; | |
c41f8cbd | 508 | fc_host_port_type(shost) = FC_PORTTYPE_PTP; |
c41f8cbd SS |
509 | break; |
510 | case FSF_TOPO_FABRIC: | |
511 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
c41f8cbd SS |
512 | break; |
513 | case FSF_TOPO_AL: | |
514 | fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; | |
dceab655 | 515 | /* fall through */ |
c41f8cbd | 516 | default: |
c41f8cbd | 517 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
518 | "Unknown or unsupported arbitrated loop " |
519 | "fibre channel topology detected\n"); | |
5ffd51a5 | 520 | zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1", req); |
c41f8cbd | 521 | return -EIO; |
1da177e4 | 522 | } |
c41f8cbd | 523 | |
1da177e4 LT |
524 | return 0; |
525 | } | |
526 | ||
c41f8cbd | 527 | static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) |
553448f6 CS |
528 | { |
529 | struct zfcp_adapter *adapter = req->adapter; | |
c41f8cbd SS |
530 | struct fsf_qtcb *qtcb = req->qtcb; |
531 | struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config; | |
532 | struct Scsi_Host *shost = adapter->scsi_host; | |
553448f6 | 533 | |
c41f8cbd SS |
534 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
535 | return; | |
1da177e4 | 536 | |
c41f8cbd SS |
537 | adapter->fsf_lic_version = bottom->lic_version; |
538 | adapter->adapter_features = bottom->adapter_features; | |
539 | adapter->connection_features = bottom->connection_features; | |
540 | adapter->peer_wwpn = 0; | |
541 | adapter->peer_wwnn = 0; | |
542 | adapter->peer_d_id = 0; | |
8a36e453 | 543 | |
c41f8cbd SS |
544 | switch (qtcb->header.fsf_status) { |
545 | case FSF_GOOD: | |
546 | if (zfcp_fsf_exchange_config_evaluate(req)) | |
547 | return; | |
1da177e4 | 548 | |
c41f8cbd SS |
549 | if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { |
550 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
551 | "FCP adapter maximum QTCB size (%d bytes) " |
552 | "is too small\n", | |
553 | bottom->max_qtcb_size); | |
5ffd51a5 | 554 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1", req); |
c41f8cbd SS |
555 | return; |
556 | } | |
557 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, | |
558 | &adapter->status); | |
1da177e4 | 559 | break; |
c41f8cbd SS |
560 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
561 | fc_host_node_name(shost) = 0; | |
562 | fc_host_port_name(shost) = 0; | |
563 | fc_host_port_id(shost) = 0; | |
564 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; | |
565 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; | |
566 | adapter->hydra_version = 0; | |
1da177e4 | 567 | |
c41f8cbd SS |
568 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, |
569 | &adapter->status); | |
1da177e4 | 570 | |
5ffd51a5 | 571 | zfcp_fsf_link_down_info_eval(req, "fsecdh2", |
c41f8cbd | 572 | &qtcb->header.fsf_status_qual.link_down_info); |
1da177e4 | 573 | break; |
c41f8cbd | 574 | default: |
5ffd51a5 | 575 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3", req); |
c41f8cbd SS |
576 | return; |
577 | } | |
1da177e4 | 578 | |
c41f8cbd SS |
579 | if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) { |
580 | adapter->hardware_version = bottom->hardware_version; | |
581 | memcpy(fc_host_serial_number(shost), bottom->serial_number, | |
582 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
583 | EBCASC(fc_host_serial_number(shost), | |
584 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
585 | } | |
1da177e4 | 586 | |
c41f8cbd SS |
587 | if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) { |
588 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
589 | "The FCP adapter only supports newer " |
590 | "control block versions\n"); | |
5ffd51a5 | 591 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4", req); |
c41f8cbd SS |
592 | return; |
593 | } | |
594 | if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) { | |
595 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
596 | "The FCP adapter only supports older " |
597 | "control block versions\n"); | |
5ffd51a5 | 598 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5", req); |
c41f8cbd SS |
599 | } |
600 | } | |
1da177e4 | 601 | |
c41f8cbd SS |
602 | static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req) |
603 | { | |
604 | struct zfcp_adapter *adapter = req->adapter; | |
605 | struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port; | |
606 | struct Scsi_Host *shost = adapter->scsi_host; | |
1da177e4 | 607 | |
c41f8cbd SS |
608 | if (req->data) |
609 | memcpy(req->data, bottom, sizeof(*bottom)); | |
9eb69aff | 610 | |
0282985d | 611 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) { |
c41f8cbd | 612 | fc_host_permanent_port_name(shost) = bottom->wwpn; |
0282985d CS |
613 | fc_host_port_type(shost) = FC_PORTTYPE_NPIV; |
614 | } else | |
c41f8cbd SS |
615 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); |
616 | fc_host_maxframe_size(shost) = bottom->maximum_frame_size; | |
617 | fc_host_supported_speeds(shost) = bottom->supported_speed; | |
2d8e62bb CS |
618 | memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types, |
619 | FC_FC4_LIST_SIZE); | |
620 | memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types, | |
621 | FC_FC4_LIST_SIZE); | |
c41f8cbd | 622 | } |
1da177e4 | 623 | |
c41f8cbd SS |
624 | static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) |
625 | { | |
c41f8cbd SS |
626 | struct fsf_qtcb *qtcb = req->qtcb; |
627 | ||
628 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
629 | return; | |
630 | ||
631 | switch (qtcb->header.fsf_status) { | |
632 | case FSF_GOOD: | |
633 | zfcp_fsf_exchange_port_evaluate(req); | |
c41f8cbd SS |
634 | break; |
635 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: | |
636 | zfcp_fsf_exchange_port_evaluate(req); | |
5ffd51a5 | 637 | zfcp_fsf_link_down_info_eval(req, "fsepdh1", |
c41f8cbd | 638 | &qtcb->header.fsf_status_qual.link_down_info); |
aef4a983 | 639 | break; |
1da177e4 | 640 | } |
c41f8cbd | 641 | } |
d26ab06e | 642 | |
564e1c86 | 643 | static int zfcp_fsf_sbal_check(struct zfcp_qdio *qdio) |
c41f8cbd | 644 | { |
564e1c86 | 645 | struct zfcp_qdio_queue *req_q = &qdio->req_q; |
c41f8cbd | 646 | |
564e1c86 | 647 | spin_lock_bh(&qdio->req_q_lock); |
7001f0c4 MP |
648 | if (atomic_read(&req_q->count)) |
649 | return 1; | |
564e1c86 | 650 | spin_unlock_bh(&qdio->req_q_lock); |
7001f0c4 MP |
651 | return 0; |
652 | } | |
653 | ||
564e1c86 | 654 | static int zfcp_fsf_req_sbal_get(struct zfcp_qdio *qdio) |
7001f0c4 | 655 | { |
564e1c86 | 656 | struct zfcp_adapter *adapter = qdio->adapter; |
7001f0c4 | 657 | long ret; |
dedbc2b3 | 658 | |
564e1c86 SS |
659 | spin_unlock_bh(&qdio->req_q_lock); |
660 | ret = wait_event_interruptible_timeout(qdio->req_q_wq, | |
661 | zfcp_fsf_sbal_check(qdio), 5 * HZ); | |
c41f8cbd SS |
662 | if (ret > 0) |
663 | return 0; | |
cbf1ed02 | 664 | if (!ret) { |
564e1c86 | 665 | atomic_inc(&qdio->req_q_full); |
cbf1ed02 CS |
666 | /* assume hanging outbound queue, try queue recovery */ |
667 | zfcp_erp_adapter_reopen(adapter, 0, "fsrsg_1", NULL); | |
668 | } | |
7001f0c4 | 669 | |
564e1c86 | 670 | spin_lock_bh(&qdio->req_q_lock); |
c41f8cbd SS |
671 | return -EIO; |
672 | } | |
673 | ||
a4623c46 | 674 | static struct zfcp_fsf_req *zfcp_fsf_alloc(mempool_t *pool) |
c41f8cbd SS |
675 | { |
676 | struct zfcp_fsf_req *req; | |
a4623c46 SS |
677 | |
678 | if (likely(pool)) | |
679 | req = mempool_alloc(pool, GFP_ATOMIC); | |
680 | else | |
681 | req = kmalloc(sizeof(*req), GFP_ATOMIC); | |
682 | ||
683 | if (unlikely(!req)) | |
c41f8cbd | 684 | return NULL; |
a4623c46 | 685 | |
c41f8cbd | 686 | memset(req, 0, sizeof(*req)); |
88f2a977 | 687 | req->pool = pool; |
c41f8cbd SS |
688 | return req; |
689 | } | |
690 | ||
a4623c46 | 691 | static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool) |
c41f8cbd | 692 | { |
a4623c46 | 693 | struct fsf_qtcb *qtcb; |
c41f8cbd SS |
694 | |
695 | if (likely(pool)) | |
696 | qtcb = mempool_alloc(pool, GFP_ATOMIC); | |
697 | else | |
a4623c46 SS |
698 | qtcb = kmem_cache_alloc(zfcp_data.qtcb_cache, GFP_ATOMIC); |
699 | ||
c41f8cbd SS |
700 | if (unlikely(!qtcb)) |
701 | return NULL; | |
702 | ||
703 | memset(qtcb, 0, sizeof(*qtcb)); | |
a4623c46 | 704 | return qtcb; |
c41f8cbd SS |
705 | } |
706 | ||
564e1c86 | 707 | static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio, |
09a46c6e | 708 | u32 fsf_cmd, mempool_t *pool) |
1da177e4 | 709 | { |
44cc76f2 | 710 | struct qdio_buffer_element *sbale; |
564e1c86 SS |
711 | struct zfcp_qdio_queue *req_q = &qdio->req_q; |
712 | struct zfcp_adapter *adapter = qdio->adapter; | |
a4623c46 | 713 | struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool); |
1da177e4 | 714 | |
c41f8cbd | 715 | if (unlikely(!req)) |
1e9b1643 | 716 | return ERR_PTR(-ENOMEM); |
1da177e4 | 717 | |
c41f8cbd SS |
718 | if (adapter->req_no == 0) |
719 | adapter->req_no++; | |
1da177e4 | 720 | |
c41f8cbd SS |
721 | INIT_LIST_HEAD(&req->list); |
722 | init_timer(&req->timer); | |
058b8647 | 723 | init_completion(&req->completion); |
1da177e4 | 724 | |
c41f8cbd SS |
725 | req->adapter = adapter; |
726 | req->fsf_command = fsf_cmd; | |
52bfb558 | 727 | req->req_id = adapter->req_no; |
34c2b712 CS |
728 | req->qdio_req.sbal_number = 1; |
729 | req->qdio_req.sbal_first = req_q->first; | |
730 | req->qdio_req.sbal_last = req_q->first; | |
731 | req->qdio_req.sbale_curr = 1; | |
c41f8cbd | 732 | |
34c2b712 | 733 | sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req); |
c41f8cbd SS |
734 | sbale[0].addr = (void *) req->req_id; |
735 | sbale[0].flags |= SBAL_FLAGS0_COMMAND; | |
736 | ||
a4623c46 SS |
737 | if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) { |
738 | if (likely(pool)) | |
739 | req->qtcb = zfcp_qtcb_alloc(adapter->pool.qtcb_pool); | |
740 | else | |
741 | req->qtcb = zfcp_qtcb_alloc(NULL); | |
742 | ||
743 | if (unlikely(!req->qtcb)) { | |
744 | zfcp_fsf_req_free(req); | |
745 | return ERR_PTR(-ENOMEM); | |
746 | } | |
747 | ||
5bdecd22 | 748 | req->seq_no = adapter->fsf_req_seq_no; |
564e1c86 | 749 | req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; |
c41f8cbd SS |
750 | req->qtcb->prefix.req_id = req->req_id; |
751 | req->qtcb->prefix.ulp_info = 26; | |
752 | req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command]; | |
753 | req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION; | |
754 | req->qtcb->header.req_handle = req->req_id; | |
755 | req->qtcb->header.fsf_command = req->fsf_command; | |
c41f8cbd SS |
756 | sbale[1].addr = (void *) req->qtcb; |
757 | sbale[1].length = sizeof(struct fsf_qtcb); | |
758 | } | |
759 | ||
760 | if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) { | |
761 | zfcp_fsf_req_free(req); | |
762 | return ERR_PTR(-EIO); | |
763 | } | |
951f746f | 764 | |
c41f8cbd | 765 | return req; |
1da177e4 LT |
766 | } |
767 | ||
c41f8cbd SS |
768 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) |
769 | { | |
770 | struct zfcp_adapter *adapter = req->adapter; | |
564e1c86 | 771 | struct zfcp_qdio *qdio = adapter->qdio; |
b6bd2fb9 | 772 | int with_qtcb = (req->qtcb != NULL); |
e60a6d69 | 773 | int req_id = req->req_id; |
c41f8cbd | 774 | |
b6bd2fb9 | 775 | zfcp_reqlist_add(adapter->req_list, req); |
c41f8cbd | 776 | |
34c2b712 | 777 | req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q.count); |
c41f8cbd | 778 | req->issued = get_clock(); |
34c2b712 | 779 | if (zfcp_qdio_send(qdio, &req->qdio_req)) { |
c41f8cbd | 780 | del_timer(&req->timer); |
3765138a | 781 | /* lookup request again, list might have changed */ |
b6bd2fb9 | 782 | zfcp_reqlist_find_rm(adapter->req_list, req_id); |
5ffd51a5 | 783 | zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1", req); |
c41f8cbd SS |
784 | return -EIO; |
785 | } | |
786 | ||
787 | /* Don't increase for unsolicited status */ | |
135ea137 | 788 | if (with_qtcb) |
c41f8cbd | 789 | adapter->fsf_req_seq_no++; |
52bfb558 | 790 | adapter->req_no++; |
c41f8cbd SS |
791 | |
792 | return 0; | |
793 | } | |
794 | ||
795 | /** | |
796 | * zfcp_fsf_status_read - send status read request | |
797 | * @adapter: pointer to struct zfcp_adapter | |
798 | * @req_flags: request flags | |
799 | * Returns: 0 on success, ERROR otherwise | |
1da177e4 | 800 | */ |
564e1c86 | 801 | int zfcp_fsf_status_read(struct zfcp_qdio *qdio) |
1da177e4 | 802 | { |
564e1c86 | 803 | struct zfcp_adapter *adapter = qdio->adapter; |
c41f8cbd SS |
804 | struct zfcp_fsf_req *req; |
805 | struct fsf_status_read_buffer *sr_buf; | |
44cc76f2 | 806 | struct qdio_buffer_element *sbale; |
c41f8cbd | 807 | int retval = -EIO; |
1da177e4 | 808 | |
564e1c86 SS |
809 | spin_lock_bh(&qdio->req_q_lock); |
810 | if (zfcp_fsf_req_sbal_get(qdio)) | |
c41f8cbd SS |
811 | goto out; |
812 | ||
564e1c86 | 813 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS, |
a4623c46 | 814 | adapter->pool.status_read_req); |
025270f0 | 815 | if (IS_ERR(req)) { |
c41f8cbd SS |
816 | retval = PTR_ERR(req); |
817 | goto out; | |
1da177e4 LT |
818 | } |
819 | ||
34c2b712 | 820 | sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req); |
c41f8cbd | 821 | sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY; |
34c2b712 | 822 | req->qdio_req.sbale_curr = 2; |
c41f8cbd | 823 | |
a4623c46 | 824 | sr_buf = mempool_alloc(adapter->pool.status_read_data, GFP_ATOMIC); |
c41f8cbd SS |
825 | if (!sr_buf) { |
826 | retval = -ENOMEM; | |
827 | goto failed_buf; | |
828 | } | |
829 | memset(sr_buf, 0, sizeof(*sr_buf)); | |
830 | req->data = sr_buf; | |
34c2b712 | 831 | sbale = zfcp_qdio_sbale_curr(qdio, &req->qdio_req); |
c41f8cbd SS |
832 | sbale->addr = (void *) sr_buf; |
833 | sbale->length = sizeof(*sr_buf); | |
059c97d0 | 834 | |
c41f8cbd SS |
835 | retval = zfcp_fsf_req_send(req); |
836 | if (retval) | |
837 | goto failed_req_send; | |
1da177e4 | 838 | |
c41f8cbd SS |
839 | goto out; |
840 | ||
841 | failed_req_send: | |
a4623c46 | 842 | mempool_free(sr_buf, adapter->pool.status_read_data); |
c41f8cbd SS |
843 | failed_buf: |
844 | zfcp_fsf_req_free(req); | |
5771710b | 845 | zfcp_dbf_hba_fsf_unsol("fail", adapter->dbf, NULL); |
c41f8cbd | 846 | out: |
564e1c86 | 847 | spin_unlock_bh(&qdio->req_q_lock); |
c41f8cbd SS |
848 | return retval; |
849 | } | |
850 | ||
851 | static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req) | |
852 | { | |
853 | struct zfcp_unit *unit = req->data; | |
854 | union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual; | |
855 | ||
856 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
857 | return; | |
858 | ||
859 | switch (req->qtcb->header.fsf_status) { | |
1da177e4 | 860 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd | 861 | if (fsq->word[0] == fsq->word[1]) { |
5ffd51a5 SS |
862 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, |
863 | "fsafch1", req); | |
c41f8cbd | 864 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
865 | } |
866 | break; | |
1da177e4 | 867 | case FSF_LUN_HANDLE_NOT_VALID: |
c41f8cbd | 868 | if (fsq->word[0] == fsq->word[1]) { |
5ffd51a5 | 869 | zfcp_erp_port_reopen(unit->port, 0, "fsafch2", req); |
c41f8cbd | 870 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
871 | } |
872 | break; | |
1da177e4 | 873 | case FSF_FCP_COMMAND_DOES_NOT_EXIST: |
c41f8cbd | 874 | req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED; |
1da177e4 | 875 | break; |
1da177e4 | 876 | case FSF_PORT_BOXED: |
5ffd51a5 | 877 | zfcp_erp_port_boxed(unit->port, "fsafch3", req); |
4c571c65 | 878 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 879 | break; |
1da177e4 | 880 | case FSF_LUN_BOXED: |
5ffd51a5 | 881 | zfcp_erp_unit_boxed(unit, "fsafch4", req); |
4c571c65 | 882 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 883 | break; |
1da177e4 | 884 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 885 | switch (fsq->word[0]) { |
1da177e4 | 886 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
6f53a2d2 | 887 | zfcp_fc_test_link(unit->port); |
dceab655 | 888 | /* fall through */ |
1da177e4 | 889 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 890 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 891 | break; |
1da177e4 LT |
892 | } |
893 | break; | |
1da177e4 | 894 | case FSF_GOOD: |
c41f8cbd | 895 | req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED; |
1da177e4 | 896 | break; |
1da177e4 | 897 | } |
1da177e4 LT |
898 | } |
899 | ||
900 | /** | |
c41f8cbd SS |
901 | * zfcp_fsf_abort_fcp_command - abort running SCSI command |
902 | * @old_req_id: unsigned long | |
c41f8cbd | 903 | * @unit: pointer to struct zfcp_unit |
c41f8cbd | 904 | * Returns: pointer to struct zfcp_fsf_req |
1da177e4 | 905 | */ |
1da177e4 | 906 | |
c41f8cbd | 907 | struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id, |
63caf367 | 908 | struct zfcp_unit *unit) |
1da177e4 | 909 | { |
44cc76f2 | 910 | struct qdio_buffer_element *sbale; |
c41f8cbd | 911 | struct zfcp_fsf_req *req = NULL; |
564e1c86 | 912 | struct zfcp_qdio *qdio = unit->port->adapter->qdio; |
8a36e453 | 913 | |
564e1c86 SS |
914 | spin_lock_bh(&qdio->req_q_lock); |
915 | if (zfcp_fsf_req_sbal_get(qdio)) | |
c41f8cbd | 916 | goto out; |
564e1c86 SS |
917 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND, |
918 | qdio->adapter->pool.scsi_abort); | |
633528c3 SS |
919 | if (IS_ERR(req)) { |
920 | req = NULL; | |
c41f8cbd | 921 | goto out; |
633528c3 | 922 | } |
2abbe866 | 923 | |
c41f8cbd SS |
924 | if (unlikely(!(atomic_read(&unit->status) & |
925 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
926 | goto out_error_free; | |
1da177e4 | 927 | |
34c2b712 | 928 | sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req); |
c41f8cbd SS |
929 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
930 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 931 | |
c41f8cbd SS |
932 | req->data = unit; |
933 | req->handler = zfcp_fsf_abort_fcp_command_handler; | |
934 | req->qtcb->header.lun_handle = unit->handle; | |
935 | req->qtcb->header.port_handle = unit->port->handle; | |
936 | req->qtcb->bottom.support.req_handle = (u64) old_req_id; | |
937 | ||
938 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); | |
939 | if (!zfcp_fsf_req_send(req)) | |
940 | goto out; | |
941 | ||
942 | out_error_free: | |
943 | zfcp_fsf_req_free(req); | |
944 | req = NULL; | |
945 | out: | |
564e1c86 | 946 | spin_unlock_bh(&qdio->req_q_lock); |
c41f8cbd | 947 | return req; |
1da177e4 LT |
948 | } |
949 | ||
c41f8cbd | 950 | static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) |
1da177e4 | 951 | { |
c41f8cbd | 952 | struct zfcp_adapter *adapter = req->adapter; |
7c7dc196 | 953 | struct zfcp_fsf_ct_els *ct = req->data; |
c41f8cbd | 954 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1da177e4 | 955 | |
7c7dc196 | 956 | ct->status = -EINVAL; |
1da177e4 | 957 | |
c41f8cbd | 958 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
959 | goto skip_fsfstatus; |
960 | ||
1da177e4 | 961 | switch (header->fsf_status) { |
1da177e4 | 962 | case FSF_GOOD: |
5771710b | 963 | zfcp_dbf_san_ct_response(req); |
7c7dc196 | 964 | ct->status = 0; |
1da177e4 | 965 | break; |
1da177e4 | 966 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 967 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 968 | break; |
1da177e4 | 969 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
970 | switch (header->fsf_status_qual.word[0]){ |
971 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 972 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 973 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 974 | break; |
1da177e4 LT |
975 | } |
976 | break; | |
1da177e4 | 977 | case FSF_ACCESS_DENIED: |
1da177e4 | 978 | break; |
1da177e4 | 979 | case FSF_PORT_BOXED: |
4c571c65 | 980 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 981 | break; |
c41f8cbd | 982 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 983 | zfcp_erp_adapter_reopen(adapter, 0, "fsscth1", req); |
dceab655 | 984 | /* fall through */ |
c41f8cbd | 985 | case FSF_GENERIC_COMMAND_REJECTED: |
1da177e4 | 986 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 987 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 988 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 989 | case FSF_SBAL_MISMATCH: |
c41f8cbd | 990 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
991 | break; |
992 | } | |
993 | ||
994 | skip_fsfstatus: | |
7c7dc196 CS |
995 | if (ct->handler) |
996 | ct->handler(ct->handler_data); | |
c41f8cbd | 997 | } |
1da177e4 | 998 | |
426f6059 CS |
999 | static void zfcp_fsf_setup_ct_els_unchained(struct qdio_buffer_element *sbale, |
1000 | struct scatterlist *sg_req, | |
1001 | struct scatterlist *sg_resp) | |
1002 | { | |
1003 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ; | |
1004 | sbale[2].addr = sg_virt(sg_req); | |
1005 | sbale[2].length = sg_req->length; | |
1006 | sbale[3].addr = sg_virt(sg_resp); | |
1007 | sbale[3].length = sg_resp->length; | |
1008 | sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1009 | } | |
1010 | ||
1011 | static int zfcp_fsf_one_sbal(struct scatterlist *sg) | |
1012 | { | |
1013 | return sg_is_last(sg) && sg->length <= PAGE_SIZE; | |
1014 | } | |
1015 | ||
39eb7e9a CS |
1016 | static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req, |
1017 | struct scatterlist *sg_req, | |
1018 | struct scatterlist *sg_resp, | |
1019 | int max_sbals) | |
c41f8cbd | 1020 | { |
42428f74 | 1021 | struct zfcp_adapter *adapter = req->adapter; |
564e1c86 | 1022 | struct qdio_buffer_element *sbale = zfcp_qdio_sbale_req(adapter->qdio, |
34c2b712 | 1023 | &req->qdio_req); |
42428f74 | 1024 | u32 feat = adapter->adapter_features; |
c41f8cbd SS |
1025 | int bytes; |
1026 | ||
39eb7e9a | 1027 | if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) { |
426f6059 | 1028 | if (!zfcp_fsf_one_sbal(sg_req) || !zfcp_fsf_one_sbal(sg_resp)) |
39eb7e9a CS |
1029 | return -EOPNOTSUPP; |
1030 | ||
426f6059 CS |
1031 | zfcp_fsf_setup_ct_els_unchained(sbale, sg_req, sg_resp); |
1032 | return 0; | |
1033 | } | |
1034 | ||
1035 | /* use single, unchained SBAL if it can hold the request */ | |
1036 | if (zfcp_fsf_one_sbal(sg_req) && zfcp_fsf_one_sbal(sg_resp)) { | |
1037 | zfcp_fsf_setup_ct_els_unchained(sbale, sg_req, sg_resp); | |
39eb7e9a CS |
1038 | return 0; |
1039 | } | |
1040 | ||
34c2b712 | 1041 | bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req, |
42428f74 | 1042 | SBAL_FLAGS0_TYPE_WRITE_READ, |
c41f8cbd SS |
1043 | sg_req, max_sbals); |
1044 | if (bytes <= 0) | |
9072df4d | 1045 | return -EIO; |
c41f8cbd | 1046 | req->qtcb->bottom.support.req_buf_length = bytes; |
34c2b712 | 1047 | req->qdio_req.sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; |
c41f8cbd | 1048 | |
34c2b712 | 1049 | bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req, |
42428f74 | 1050 | SBAL_FLAGS0_TYPE_WRITE_READ, |
c41f8cbd | 1051 | sg_resp, max_sbals); |
b1a58985 | 1052 | req->qtcb->bottom.support.resp_buf_length = bytes; |
c41f8cbd | 1053 | if (bytes <= 0) |
9072df4d | 1054 | return -EIO; |
98fc4d5c | 1055 | |
b1a58985 CS |
1056 | return 0; |
1057 | } | |
1058 | ||
1059 | static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req, | |
1060 | struct scatterlist *sg_req, | |
1061 | struct scatterlist *sg_resp, | |
51375ee8 | 1062 | int max_sbals, unsigned int timeout) |
b1a58985 CS |
1063 | { |
1064 | int ret; | |
1065 | ||
1066 | ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp, max_sbals); | |
1067 | if (ret) | |
1068 | return ret; | |
1069 | ||
98fc4d5c | 1070 | /* common settings for ct/gs and els requests */ |
51375ee8 SS |
1071 | if (timeout > 255) |
1072 | timeout = 255; /* max value accepted by hardware */ | |
98fc4d5c | 1073 | req->qtcb->bottom.support.service_class = FSF_CLASS_3; |
51375ee8 SS |
1074 | req->qtcb->bottom.support.timeout = timeout; |
1075 | zfcp_fsf_start_timer(req, (timeout + 10) * HZ); | |
c41f8cbd SS |
1076 | |
1077 | return 0; | |
1da177e4 LT |
1078 | } |
1079 | ||
1080 | /** | |
c41f8cbd SS |
1081 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) |
1082 | * @ct: pointer to struct zfcp_send_ct with data for request | |
1083 | * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req | |
1da177e4 | 1084 | */ |
7c7dc196 | 1085 | int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port, |
51375ee8 SS |
1086 | struct zfcp_fsf_ct_els *ct, mempool_t *pool, |
1087 | unsigned int timeout) | |
1da177e4 | 1088 | { |
564e1c86 | 1089 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
c41f8cbd SS |
1090 | struct zfcp_fsf_req *req; |
1091 | int ret = -EIO; | |
1da177e4 | 1092 | |
564e1c86 SS |
1093 | spin_lock_bh(&qdio->req_q_lock); |
1094 | if (zfcp_fsf_req_sbal_get(qdio)) | |
c41f8cbd | 1095 | goto out; |
1da177e4 | 1096 | |
564e1c86 | 1097 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC, pool); |
09a46c6e | 1098 | |
025270f0 | 1099 | if (IS_ERR(req)) { |
c41f8cbd SS |
1100 | ret = PTR_ERR(req); |
1101 | goto out; | |
3f0ca62a CS |
1102 | } |
1103 | ||
09a46c6e | 1104 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
b1a58985 | 1105 | ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp, |
51375ee8 | 1106 | FSF_MAX_SBALS_PER_REQ, timeout); |
553448f6 | 1107 | if (ret) |
1da177e4 | 1108 | goto failed_send; |
1da177e4 | 1109 | |
c41f8cbd | 1110 | req->handler = zfcp_fsf_send_ct_handler; |
5ab944f9 | 1111 | req->qtcb->header.port_handle = wka_port->handle; |
c41f8cbd SS |
1112 | req->data = ct; |
1113 | ||
7c7dc196 | 1114 | zfcp_dbf_san_ct_request(req, wka_port->d_id); |
1da177e4 | 1115 | |
c41f8cbd SS |
1116 | ret = zfcp_fsf_req_send(req); |
1117 | if (ret) | |
1118 | goto failed_send; | |
1da177e4 | 1119 | |
c41f8cbd | 1120 | goto out; |
1da177e4 | 1121 | |
c41f8cbd SS |
1122 | failed_send: |
1123 | zfcp_fsf_req_free(req); | |
c41f8cbd | 1124 | out: |
564e1c86 | 1125 | spin_unlock_bh(&qdio->req_q_lock); |
c41f8cbd | 1126 | return ret; |
1da177e4 LT |
1127 | } |
1128 | ||
c41f8cbd | 1129 | static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1130 | { |
7c7dc196 | 1131 | struct zfcp_fsf_ct_els *send_els = req->data; |
c41f8cbd SS |
1132 | struct zfcp_port *port = send_els->port; |
1133 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1134 | |
c41f8cbd | 1135 | send_els->status = -EINVAL; |
1da177e4 | 1136 | |
c41f8cbd | 1137 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
1138 | goto skip_fsfstatus; |
1139 | ||
1140 | switch (header->fsf_status) { | |
1da177e4 | 1141 | case FSF_GOOD: |
5771710b | 1142 | zfcp_dbf_san_els_response(req); |
c41f8cbd | 1143 | send_els->status = 0; |
1da177e4 | 1144 | break; |
1da177e4 | 1145 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 1146 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 1147 | break; |
1da177e4 | 1148 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1149 | switch (header->fsf_status_qual.word[0]){ |
1150 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1151 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1152 | case FSF_SQ_RETRY_IF_POSSIBLE: |
c41f8cbd | 1153 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1154 | break; |
1da177e4 LT |
1155 | } |
1156 | break; | |
1da177e4 | 1157 | case FSF_ELS_COMMAND_REJECTED: |
1da177e4 | 1158 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1159 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1160 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1161 | break; |
1da177e4 | 1162 | case FSF_ACCESS_DENIED: |
dc577d55 CS |
1163 | if (port) |
1164 | zfcp_fsf_access_denied_port(req, port); | |
1da177e4 | 1165 | break; |
c41f8cbd SS |
1166 | case FSF_SBAL_MISMATCH: |
1167 | /* should never occure, avoided in zfcp_fsf_send_els */ | |
1168 | /* fall through */ | |
1da177e4 | 1169 | default: |
c41f8cbd | 1170 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1171 | break; |
1172 | } | |
1da177e4 | 1173 | skip_fsfstatus: |
aa551daf | 1174 | if (send_els->handler) |
1da177e4 | 1175 | send_els->handler(send_els->handler_data); |
c41f8cbd | 1176 | } |
1da177e4 | 1177 | |
c41f8cbd SS |
1178 | /** |
1179 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) | |
1180 | * @els: pointer to struct zfcp_send_els with data for the command | |
1181 | */ | |
7c7dc196 | 1182 | int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id, |
51375ee8 | 1183 | struct zfcp_fsf_ct_els *els, unsigned int timeout) |
c41f8cbd SS |
1184 | { |
1185 | struct zfcp_fsf_req *req; | |
7c7dc196 | 1186 | struct zfcp_qdio *qdio = adapter->qdio; |
c41f8cbd SS |
1187 | int ret = -EIO; |
1188 | ||
564e1c86 SS |
1189 | spin_lock_bh(&qdio->req_q_lock); |
1190 | if (zfcp_fsf_req_sbal_get(qdio)) | |
c41f8cbd | 1191 | goto out; |
09a46c6e | 1192 | |
564e1c86 | 1193 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS, NULL); |
09a46c6e | 1194 | |
025270f0 | 1195 | if (IS_ERR(req)) { |
c41f8cbd SS |
1196 | ret = PTR_ERR(req); |
1197 | goto out; | |
1198 | } | |
1199 | ||
09a46c6e | 1200 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
51375ee8 | 1201 | ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, 2, timeout); |
44cc76f2 | 1202 | |
c41f8cbd SS |
1203 | if (ret) |
1204 | goto failed_send; | |
1205 | ||
7c7dc196 | 1206 | hton24(req->qtcb->bottom.support.d_id, d_id); |
c41f8cbd | 1207 | req->handler = zfcp_fsf_send_els_handler; |
c41f8cbd SS |
1208 | req->data = els; |
1209 | ||
5771710b | 1210 | zfcp_dbf_san_els_request(req); |
c41f8cbd | 1211 | |
c41f8cbd SS |
1212 | ret = zfcp_fsf_req_send(req); |
1213 | if (ret) | |
1214 | goto failed_send; | |
1215 | ||
1216 | goto out; | |
1217 | ||
1218 | failed_send: | |
1219 | zfcp_fsf_req_free(req); | |
1220 | out: | |
564e1c86 | 1221 | spin_unlock_bh(&qdio->req_q_lock); |
c41f8cbd | 1222 | return ret; |
1da177e4 LT |
1223 | } |
1224 | ||
c41f8cbd | 1225 | int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1226 | { |
44cc76f2 | 1227 | struct qdio_buffer_element *sbale; |
c41f8cbd | 1228 | struct zfcp_fsf_req *req; |
564e1c86 | 1229 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1230 | int retval = -EIO; |
1231 | ||
564e1c86 SS |
1232 | spin_lock_bh(&qdio->req_q_lock); |
1233 | if (zfcp_fsf_req_sbal_get(qdio)) | |
c41f8cbd | 1234 | goto out; |
09a46c6e | 1235 | |
564e1c86 SS |
1236 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, |
1237 | qdio->adapter->pool.erp_req); | |
09a46c6e | 1238 | |
025270f0 | 1239 | if (IS_ERR(req)) { |
c41f8cbd SS |
1240 | retval = PTR_ERR(req); |
1241 | goto out; | |
1da177e4 LT |
1242 | } |
1243 | ||
09a46c6e | 1244 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
34c2b712 | 1245 | sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req); |
52ef11a7 SS |
1246 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1247 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1248 | |
c41f8cbd | 1249 | req->qtcb->bottom.config.feature_selection = |
aef4a983 MS |
1250 | FSF_FEATURE_CFDC | |
1251 | FSF_FEATURE_LUN_SHARING | | |
9eb69aff | 1252 | FSF_FEATURE_NOTIFICATION_LOST | |
aef4a983 | 1253 | FSF_FEATURE_UPDATE_ALERT; |
c41f8cbd SS |
1254 | req->erp_action = erp_action; |
1255 | req->handler = zfcp_fsf_exchange_config_data_handler; | |
e60a6d69 | 1256 | erp_action->fsf_req_id = req->req_id; |
1da177e4 | 1257 | |
287ac01a | 1258 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1259 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1260 | if (retval) { |
c41f8cbd | 1261 | zfcp_fsf_req_free(req); |
e60a6d69 | 1262 | erp_action->fsf_req_id = 0; |
1da177e4 | 1263 | } |
c41f8cbd | 1264 | out: |
564e1c86 | 1265 | spin_unlock_bh(&qdio->req_q_lock); |
52ef11a7 SS |
1266 | return retval; |
1267 | } | |
1da177e4 | 1268 | |
564e1c86 | 1269 | int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio, |
c41f8cbd | 1270 | struct fsf_qtcb_bottom_config *data) |
52ef11a7 | 1271 | { |
44cc76f2 | 1272 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1273 | struct zfcp_fsf_req *req = NULL; |
1274 | int retval = -EIO; | |
1275 | ||
564e1c86 SS |
1276 | spin_lock_bh(&qdio->req_q_lock); |
1277 | if (zfcp_fsf_req_sbal_get(qdio)) | |
ada81b74 | 1278 | goto out_unlock; |
c41f8cbd | 1279 | |
564e1c86 | 1280 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, NULL); |
09a46c6e | 1281 | |
025270f0 | 1282 | if (IS_ERR(req)) { |
c41f8cbd | 1283 | retval = PTR_ERR(req); |
ada81b74 | 1284 | goto out_unlock; |
52ef11a7 SS |
1285 | } |
1286 | ||
34c2b712 | 1287 | sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req); |
52ef11a7 SS |
1288 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1289 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
c41f8cbd | 1290 | req->handler = zfcp_fsf_exchange_config_data_handler; |
52ef11a7 | 1291 | |
c41f8cbd | 1292 | req->qtcb->bottom.config.feature_selection = |
52ef11a7 SS |
1293 | FSF_FEATURE_CFDC | |
1294 | FSF_FEATURE_LUN_SHARING | | |
1295 | FSF_FEATURE_NOTIFICATION_LOST | | |
1296 | FSF_FEATURE_UPDATE_ALERT; | |
1297 | ||
1298 | if (data) | |
c41f8cbd | 1299 | req->data = data; |
52ef11a7 | 1300 | |
c41f8cbd SS |
1301 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
1302 | retval = zfcp_fsf_req_send(req); | |
564e1c86 | 1303 | spin_unlock_bh(&qdio->req_q_lock); |
553448f6 | 1304 | if (!retval) |
058b8647 | 1305 | wait_for_completion(&req->completion); |
52ef11a7 | 1306 | |
c41f8cbd | 1307 | zfcp_fsf_req_free(req); |
ada81b74 | 1308 | return retval; |
52ef11a7 | 1309 | |
ada81b74 | 1310 | out_unlock: |
564e1c86 | 1311 | spin_unlock_bh(&qdio->req_q_lock); |
1da177e4 LT |
1312 | return retval; |
1313 | } | |
1314 | ||
1da177e4 LT |
1315 | /** |
1316 | * zfcp_fsf_exchange_port_data - request information about local port | |
aef4a983 | 1317 | * @erp_action: ERP action for the adapter for which port data is requested |
c41f8cbd | 1318 | * Returns: 0 on success, error otherwise |
1da177e4 | 1319 | */ |
c41f8cbd | 1320 | int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1321 | { |
564e1c86 | 1322 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
44cc76f2 | 1323 | struct qdio_buffer_element *sbale; |
c41f8cbd | 1324 | struct zfcp_fsf_req *req; |
c41f8cbd | 1325 | int retval = -EIO; |
1da177e4 | 1326 | |
564e1c86 | 1327 | if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1328 | return -EOPNOTSUPP; |
1da177e4 | 1329 | |
564e1c86 SS |
1330 | spin_lock_bh(&qdio->req_q_lock); |
1331 | if (zfcp_fsf_req_sbal_get(qdio)) | |
c41f8cbd | 1332 | goto out; |
09a46c6e | 1333 | |
564e1c86 SS |
1334 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, |
1335 | qdio->adapter->pool.erp_req); | |
09a46c6e | 1336 | |
025270f0 | 1337 | if (IS_ERR(req)) { |
c41f8cbd SS |
1338 | retval = PTR_ERR(req); |
1339 | goto out; | |
aef4a983 MS |
1340 | } |
1341 | ||
09a46c6e | 1342 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
34c2b712 | 1343 | sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req); |
52ef11a7 SS |
1344 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1345 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1346 | |
c41f8cbd SS |
1347 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1348 | req->erp_action = erp_action; | |
e60a6d69 | 1349 | erp_action->fsf_req_id = req->req_id; |
52ef11a7 | 1350 | |
287ac01a | 1351 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1352 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1353 | if (retval) { |
c41f8cbd | 1354 | zfcp_fsf_req_free(req); |
e60a6d69 | 1355 | erp_action->fsf_req_id = 0; |
52ef11a7 | 1356 | } |
c41f8cbd | 1357 | out: |
564e1c86 | 1358 | spin_unlock_bh(&qdio->req_q_lock); |
52ef11a7 SS |
1359 | return retval; |
1360 | } | |
1361 | ||
52ef11a7 SS |
1362 | /** |
1363 | * zfcp_fsf_exchange_port_data_sync - request information about local port | |
564e1c86 | 1364 | * @qdio: pointer to struct zfcp_qdio |
c41f8cbd SS |
1365 | * @data: pointer to struct fsf_qtcb_bottom_port |
1366 | * Returns: 0 on success, error otherwise | |
52ef11a7 | 1367 | */ |
564e1c86 | 1368 | int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio, |
c41f8cbd | 1369 | struct fsf_qtcb_bottom_port *data) |
52ef11a7 | 1370 | { |
44cc76f2 | 1371 | struct qdio_buffer_element *sbale; |
c41f8cbd SS |
1372 | struct zfcp_fsf_req *req = NULL; |
1373 | int retval = -EIO; | |
52ef11a7 | 1374 | |
564e1c86 | 1375 | if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1376 | return -EOPNOTSUPP; |
52ef11a7 | 1377 | |
564e1c86 SS |
1378 | spin_lock_bh(&qdio->req_q_lock); |
1379 | if (zfcp_fsf_req_sbal_get(qdio)) | |
ada81b74 | 1380 | goto out_unlock; |
c41f8cbd | 1381 | |
564e1c86 | 1382 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, NULL); |
09a46c6e | 1383 | |
025270f0 | 1384 | if (IS_ERR(req)) { |
c41f8cbd | 1385 | retval = PTR_ERR(req); |
ada81b74 | 1386 | goto out_unlock; |
1da177e4 LT |
1387 | } |
1388 | ||
52ef11a7 | 1389 | if (data) |
c41f8cbd | 1390 | req->data = data; |
52ef11a7 | 1391 | |
34c2b712 | 1392 | sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req); |
52ef11a7 SS |
1393 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1394 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1395 | ||
c41f8cbd SS |
1396 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1397 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1398 | retval = zfcp_fsf_req_send(req); | |
564e1c86 | 1399 | spin_unlock_bh(&qdio->req_q_lock); |
ada81b74 | 1400 | |
553448f6 | 1401 | if (!retval) |
058b8647 SS |
1402 | wait_for_completion(&req->completion); |
1403 | ||
c41f8cbd | 1404 | zfcp_fsf_req_free(req); |
1da177e4 | 1405 | |
1da177e4 | 1406 | return retval; |
ada81b74 CS |
1407 | |
1408 | out_unlock: | |
564e1c86 | 1409 | spin_unlock_bh(&qdio->req_q_lock); |
ada81b74 | 1410 | return retval; |
1da177e4 LT |
1411 | } |
1412 | ||
c41f8cbd | 1413 | static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1414 | { |
c41f8cbd SS |
1415 | struct zfcp_port *port = req->data; |
1416 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
9d05ce2c | 1417 | struct fc_els_flogi *plogi; |
1da177e4 | 1418 | |
c41f8cbd | 1419 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
a17c5855 | 1420 | goto out; |
1da177e4 | 1421 | |
1da177e4 | 1422 | switch (header->fsf_status) { |
1da177e4 | 1423 | case FSF_PORT_ALREADY_OPEN: |
1da177e4 | 1424 | break; |
1da177e4 | 1425 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1426 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1427 | break; |
1da177e4 | 1428 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: |
c41f8cbd | 1429 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 1430 | "Not enough FCP adapter resources to open " |
7ba58c9c SS |
1431 | "remote port 0x%016Lx\n", |
1432 | (unsigned long long)port->wwpn); | |
5ffd51a5 | 1433 | zfcp_erp_port_failed(port, "fsoph_1", req); |
c41f8cbd | 1434 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1435 | break; |
1da177e4 | 1436 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1437 | switch (header->fsf_status_qual.word[0]) { |
1438 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1439 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1440 | case FSF_SQ_NO_RETRY_POSSIBLE: |
c41f8cbd | 1441 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1442 | break; |
1443 | } | |
1444 | break; | |
1da177e4 | 1445 | case FSF_GOOD: |
1da177e4 | 1446 | port->handle = header->port_handle; |
1da177e4 LT |
1447 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN | |
1448 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
d736a27b AH |
1449 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
1450 | ZFCP_STATUS_COMMON_ACCESS_BOXED, | |
1451 | &port->status); | |
1da177e4 LT |
1452 | /* check whether D_ID has changed during open */ |
1453 | /* | |
1454 | * FIXME: This check is not airtight, as the FCP channel does | |
1455 | * not monitor closures of target port connections caused on | |
1456 | * the remote side. Thus, they might miss out on invalidating | |
1457 | * locally cached WWPNs (and other N_Port parameters) of gone | |
1458 | * target ports. So, our heroic attempt to make things safe | |
1459 | * could be undermined by 'open port' response data tagged with | |
1460 | * obsolete WWPNs. Another reason to monitor potential | |
1461 | * connection closures ourself at least (by interpreting | |
1462 | * incoming ELS' and unsolicited status). It just crosses my | |
1463 | * mind that one should be able to cross-check by means of | |
1464 | * another GID_PN straight after a port has been opened. | |
1465 | * Alternately, an ADISC/PDISC ELS should suffice, as well. | |
1466 | */ | |
9d05ce2c | 1467 | plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els; |
39eb7e9a | 1468 | if (req->qtcb->bottom.support.els1_length >= |
9d05ce2c | 1469 | FSF_PLOGI_MIN_LEN) |
c41f8cbd | 1470 | zfcp_fc_plogi_evaluate(port, plogi); |
1da177e4 | 1471 | break; |
1da177e4 | 1472 | case FSF_UNKNOWN_OP_SUBTYPE: |
c41f8cbd | 1473 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1474 | break; |
1475 | } | |
a17c5855 MP |
1476 | |
1477 | out: | |
615f59e0 | 1478 | put_device(&port->dev); |
1da177e4 LT |
1479 | } |
1480 | ||
c41f8cbd SS |
1481 | /** |
1482 | * zfcp_fsf_open_port - create and send open port request | |
1483 | * @erp_action: pointer to struct zfcp_erp_action | |
1484 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1485 | */ |
c41f8cbd | 1486 | int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1487 | { |
44cc76f2 | 1488 | struct qdio_buffer_element *sbale; |
564e1c86 | 1489 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
a17c5855 | 1490 | struct zfcp_port *port = erp_action->port; |
564e1c86 | 1491 | struct zfcp_fsf_req *req; |
c41f8cbd SS |
1492 | int retval = -EIO; |
1493 | ||
564e1c86 SS |
1494 | spin_lock_bh(&qdio->req_q_lock); |
1495 | if (zfcp_fsf_req_sbal_get(qdio)) | |
c41f8cbd SS |
1496 | goto out; |
1497 | ||
564e1c86 SS |
1498 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID, |
1499 | qdio->adapter->pool.erp_req); | |
09a46c6e | 1500 | |
025270f0 | 1501 | if (IS_ERR(req)) { |
c41f8cbd | 1502 | retval = PTR_ERR(req); |
1da177e4 | 1503 | goto out; |
c41f8cbd | 1504 | } |
1da177e4 | 1505 | |
09a46c6e | 1506 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
34c2b712 | 1507 | sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req); |
1da177e4 LT |
1508 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1509 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1510 | ||
c41f8cbd | 1511 | req->handler = zfcp_fsf_open_port_handler; |
800c0cad | 1512 | hton24(req->qtcb->bottom.support.d_id, port->d_id); |
a17c5855 | 1513 | req->data = port; |
c41f8cbd | 1514 | req->erp_action = erp_action; |
e60a6d69 | 1515 | erp_action->fsf_req_id = req->req_id; |
615f59e0 | 1516 | get_device(&port->dev); |
c41f8cbd | 1517 | |
287ac01a | 1518 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1519 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1520 | if (retval) { |
c41f8cbd | 1521 | zfcp_fsf_req_free(req); |
e60a6d69 | 1522 | erp_action->fsf_req_id = 0; |
615f59e0 | 1523 | put_device(&port->dev); |
1da177e4 | 1524 | } |
c41f8cbd | 1525 | out: |
564e1c86 | 1526 | spin_unlock_bh(&qdio->req_q_lock); |
1da177e4 LT |
1527 | return retval; |
1528 | } | |
1529 | ||
c41f8cbd | 1530 | static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1531 | { |
c41f8cbd | 1532 | struct zfcp_port *port = req->data; |
1da177e4 | 1533 | |
c41f8cbd | 1534 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1535 | return; |
1da177e4 | 1536 | |
c41f8cbd | 1537 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1538 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 1539 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1", req); |
c41f8cbd | 1540 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1541 | break; |
1da177e4 | 1542 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 | 1543 | break; |
1da177e4 | 1544 | case FSF_GOOD: |
5ffd51a5 | 1545 | zfcp_erp_modify_port_status(port, "fscph_2", req, |
1da177e4 LT |
1546 | ZFCP_STATUS_COMMON_OPEN, |
1547 | ZFCP_CLEAR); | |
1da177e4 | 1548 | break; |
1da177e4 | 1549 | } |
1da177e4 LT |
1550 | } |
1551 | ||
c41f8cbd SS |
1552 | /** |
1553 | * zfcp_fsf_close_port - create and send close port request | |
1554 | * @erp_action: pointer to struct zfcp_erp_action | |
1555 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1556 | */ |
c41f8cbd | 1557 | int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1558 | { |
44cc76f2 | 1559 | struct qdio_buffer_element *sbale; |
564e1c86 | 1560 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1561 | struct zfcp_fsf_req *req; |
1562 | int retval = -EIO; | |
1563 | ||
564e1c86 SS |
1564 | spin_lock_bh(&qdio->req_q_lock); |
1565 | if (zfcp_fsf_req_sbal_get(qdio)) | |
c41f8cbd SS |
1566 | goto out; |
1567 | ||
564e1c86 SS |
1568 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT, |
1569 | qdio->adapter->pool.erp_req); | |
09a46c6e | 1570 | |
025270f0 | 1571 | if (IS_ERR(req)) { |
c41f8cbd | 1572 | retval = PTR_ERR(req); |
1da177e4 | 1573 | goto out; |
c41f8cbd | 1574 | } |
1da177e4 | 1575 | |
09a46c6e | 1576 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
34c2b712 | 1577 | sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req); |
1da177e4 LT |
1578 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1579 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1580 | ||
c41f8cbd SS |
1581 | req->handler = zfcp_fsf_close_port_handler; |
1582 | req->data = erp_action->port; | |
1583 | req->erp_action = erp_action; | |
1584 | req->qtcb->header.port_handle = erp_action->port->handle; | |
e60a6d69 | 1585 | erp_action->fsf_req_id = req->req_id; |
c41f8cbd | 1586 | |
287ac01a | 1587 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1588 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1589 | if (retval) { |
c41f8cbd | 1590 | zfcp_fsf_req_free(req); |
e60a6d69 | 1591 | erp_action->fsf_req_id = 0; |
1da177e4 | 1592 | } |
c41f8cbd | 1593 | out: |
564e1c86 | 1594 | spin_unlock_bh(&qdio->req_q_lock); |
1da177e4 LT |
1595 | return retval; |
1596 | } | |
1597 | ||
5ab944f9 SS |
1598 | static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req) |
1599 | { | |
bd0072ec | 1600 | struct zfcp_fc_wka_port *wka_port = req->data; |
5ab944f9 SS |
1601 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1602 | ||
1603 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
bd0072ec | 1604 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 SS |
1605 | goto out; |
1606 | } | |
1607 | ||
1608 | switch (header->fsf_status) { | |
1609 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: | |
1610 | dev_warn(&req->adapter->ccw_device->dev, | |
1611 | "Opening WKA port 0x%x failed\n", wka_port->d_id); | |
dceab655 | 1612 | /* fall through */ |
5ab944f9 SS |
1613 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1614 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
dceab655 | 1615 | /* fall through */ |
5ab944f9 | 1616 | case FSF_ACCESS_DENIED: |
bd0072ec | 1617 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 | 1618 | break; |
5ab944f9 SS |
1619 | case FSF_GOOD: |
1620 | wka_port->handle = header->port_handle; | |
27f492cc SS |
1621 | /* fall through */ |
1622 | case FSF_PORT_ALREADY_OPEN: | |
bd0072ec | 1623 | wka_port->status = ZFCP_FC_WKA_PORT_ONLINE; |
5ab944f9 SS |
1624 | } |
1625 | out: | |
1626 | wake_up(&wka_port->completion_wq); | |
1627 | } | |
1628 | ||
1629 | /** | |
1630 | * zfcp_fsf_open_wka_port - create and send open wka-port request | |
bd0072ec | 1631 | * @wka_port: pointer to struct zfcp_fc_wka_port |
5ab944f9 SS |
1632 | * Returns: 0 on success, error otherwise |
1633 | */ | |
bd0072ec | 1634 | int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port) |
5ab944f9 SS |
1635 | { |
1636 | struct qdio_buffer_element *sbale; | |
564e1c86 | 1637 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
5ab944f9 SS |
1638 | struct zfcp_fsf_req *req; |
1639 | int retval = -EIO; | |
1640 | ||
564e1c86 SS |
1641 | spin_lock_bh(&qdio->req_q_lock); |
1642 | if (zfcp_fsf_req_sbal_get(qdio)) | |
5ab944f9 SS |
1643 | goto out; |
1644 | ||
564e1c86 SS |
1645 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID, |
1646 | qdio->adapter->pool.erp_req); | |
09a46c6e | 1647 | |
5ab944f9 SS |
1648 | if (unlikely(IS_ERR(req))) { |
1649 | retval = PTR_ERR(req); | |
1650 | goto out; | |
1651 | } | |
1652 | ||
09a46c6e | 1653 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
34c2b712 | 1654 | sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req); |
5ab944f9 SS |
1655 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1656 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1657 | ||
1658 | req->handler = zfcp_fsf_open_wka_port_handler; | |
800c0cad | 1659 | hton24(req->qtcb->bottom.support.d_id, wka_port->d_id); |
5ab944f9 SS |
1660 | req->data = wka_port; |
1661 | ||
1662 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1663 | retval = zfcp_fsf_req_send(req); | |
1664 | if (retval) | |
1665 | zfcp_fsf_req_free(req); | |
1666 | out: | |
564e1c86 | 1667 | spin_unlock_bh(&qdio->req_q_lock); |
5ab944f9 SS |
1668 | return retval; |
1669 | } | |
1670 | ||
1671 | static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req) | |
1672 | { | |
bd0072ec | 1673 | struct zfcp_fc_wka_port *wka_port = req->data; |
5ab944f9 SS |
1674 | |
1675 | if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) { | |
1676 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
5ffd51a5 | 1677 | zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1", req); |
5ab944f9 SS |
1678 | } |
1679 | ||
bd0072ec | 1680 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 SS |
1681 | wake_up(&wka_port->completion_wq); |
1682 | } | |
1683 | ||
1684 | /** | |
1685 | * zfcp_fsf_close_wka_port - create and send close wka port request | |
bd0072ec | 1686 | * @wka_port: WKA port to open |
5ab944f9 SS |
1687 | * Returns: 0 on success, error otherwise |
1688 | */ | |
bd0072ec | 1689 | int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port) |
5ab944f9 SS |
1690 | { |
1691 | struct qdio_buffer_element *sbale; | |
564e1c86 | 1692 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
5ab944f9 SS |
1693 | struct zfcp_fsf_req *req; |
1694 | int retval = -EIO; | |
1695 | ||
564e1c86 SS |
1696 | spin_lock_bh(&qdio->req_q_lock); |
1697 | if (zfcp_fsf_req_sbal_get(qdio)) | |
5ab944f9 SS |
1698 | goto out; |
1699 | ||
564e1c86 SS |
1700 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT, |
1701 | qdio->adapter->pool.erp_req); | |
09a46c6e | 1702 | |
5ab944f9 SS |
1703 | if (unlikely(IS_ERR(req))) { |
1704 | retval = PTR_ERR(req); | |
1705 | goto out; | |
1706 | } | |
1707 | ||
09a46c6e | 1708 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
34c2b712 | 1709 | sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req); |
5ab944f9 SS |
1710 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1711 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1712 | ||
1713 | req->handler = zfcp_fsf_close_wka_port_handler; | |
1714 | req->data = wka_port; | |
1715 | req->qtcb->header.port_handle = wka_port->handle; | |
1716 | ||
1717 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1718 | retval = zfcp_fsf_req_send(req); | |
1719 | if (retval) | |
1720 | zfcp_fsf_req_free(req); | |
1721 | out: | |
564e1c86 | 1722 | spin_unlock_bh(&qdio->req_q_lock); |
5ab944f9 SS |
1723 | return retval; |
1724 | } | |
1725 | ||
c41f8cbd | 1726 | static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1727 | { |
c41f8cbd SS |
1728 | struct zfcp_port *port = req->data; |
1729 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1730 | struct zfcp_unit *unit; |
1da177e4 | 1731 | |
c41f8cbd | 1732 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
a5b11dda | 1733 | return; |
1da177e4 | 1734 | |
1da177e4 | 1735 | switch (header->fsf_status) { |
1da177e4 | 1736 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 1737 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1", req); |
c41f8cbd | 1738 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1739 | break; |
1da177e4 | 1740 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1741 | zfcp_fsf_access_denied_port(req, port); |
1da177e4 | 1742 | break; |
1da177e4 | 1743 | case FSF_PORT_BOXED: |
5c815d15 CS |
1744 | /* can't use generic zfcp_erp_modify_port_status because |
1745 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */ | |
1746 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
ecf0c772 SS |
1747 | read_lock(&port->unit_list_lock); |
1748 | list_for_each_entry(unit, &port->unit_list, list) | |
5c815d15 CS |
1749 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, |
1750 | &unit->status); | |
ecf0c772 | 1751 | read_unlock(&port->unit_list_lock); |
dfb3cf00 | 1752 | zfcp_erp_port_boxed(port, "fscpph2", req); |
4c571c65 | 1753 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1754 | break; |
1da177e4 | 1755 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1756 | switch (header->fsf_status_qual.word[0]) { |
1757 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
c41f8cbd | 1758 | /* fall through */ |
1da177e4 | 1759 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1760 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1761 | break; |
1da177e4 LT |
1762 | } |
1763 | break; | |
1da177e4 | 1764 | case FSF_GOOD: |
1da177e4 LT |
1765 | /* can't use generic zfcp_erp_modify_port_status because |
1766 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port | |
1767 | */ | |
1768 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
ecf0c772 SS |
1769 | read_lock(&port->unit_list_lock); |
1770 | list_for_each_entry(unit, &port->unit_list, list) | |
c41f8cbd SS |
1771 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, |
1772 | &unit->status); | |
ecf0c772 | 1773 | read_unlock(&port->unit_list_lock); |
1da177e4 | 1774 | break; |
1da177e4 | 1775 | } |
1da177e4 LT |
1776 | } |
1777 | ||
c41f8cbd SS |
1778 | /** |
1779 | * zfcp_fsf_close_physical_port - close physical port | |
1780 | * @erp_action: pointer to struct zfcp_erp_action | |
1781 | * Returns: 0 on success | |
1da177e4 | 1782 | */ |
c41f8cbd | 1783 | int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1784 | { |
44cc76f2 | 1785 | struct qdio_buffer_element *sbale; |
564e1c86 | 1786 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1787 | struct zfcp_fsf_req *req; |
1788 | int retval = -EIO; | |
1789 | ||
564e1c86 SS |
1790 | spin_lock_bh(&qdio->req_q_lock); |
1791 | if (zfcp_fsf_req_sbal_get(qdio)) | |
1da177e4 | 1792 | goto out; |
1da177e4 | 1793 | |
564e1c86 SS |
1794 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT, |
1795 | qdio->adapter->pool.erp_req); | |
09a46c6e | 1796 | |
025270f0 | 1797 | if (IS_ERR(req)) { |
c41f8cbd SS |
1798 | retval = PTR_ERR(req); |
1799 | goto out; | |
1800 | } | |
1da177e4 | 1801 | |
09a46c6e | 1802 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
34c2b712 | 1803 | sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req); |
c41f8cbd SS |
1804 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1805 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 1806 | |
c41f8cbd SS |
1807 | req->data = erp_action->port; |
1808 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1809 | req->erp_action = erp_action; | |
1810 | req->handler = zfcp_fsf_close_physical_port_handler; | |
e60a6d69 | 1811 | erp_action->fsf_req_id = req->req_id; |
c41f8cbd | 1812 | |
287ac01a | 1813 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1814 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1815 | if (retval) { |
c41f8cbd | 1816 | zfcp_fsf_req_free(req); |
e60a6d69 | 1817 | erp_action->fsf_req_id = 0; |
1da177e4 | 1818 | } |
c41f8cbd | 1819 | out: |
564e1c86 | 1820 | spin_unlock_bh(&qdio->req_q_lock); |
1da177e4 LT |
1821 | return retval; |
1822 | } | |
1823 | ||
c41f8cbd | 1824 | static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1825 | { |
c41f8cbd SS |
1826 | struct zfcp_adapter *adapter = req->adapter; |
1827 | struct zfcp_unit *unit = req->data; | |
1828 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1829 | struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support; | |
1830 | struct fsf_queue_designator *queue_designator = | |
1831 | &header->fsf_status_qual.fsf_queue_designator; | |
aef4a983 | 1832 | int exclusive, readwrite; |
1da177e4 | 1833 | |
c41f8cbd | 1834 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1835 | return; |
1da177e4 | 1836 | |
1da177e4 | 1837 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
b64ddf96 | 1838 | ZFCP_STATUS_COMMON_ACCESS_BOXED | |
1da177e4 LT |
1839 | ZFCP_STATUS_UNIT_SHARED | |
1840 | ZFCP_STATUS_UNIT_READONLY, | |
1841 | &unit->status); | |
1842 | ||
1da177e4 LT |
1843 | switch (header->fsf_status) { |
1844 | ||
1845 | case FSF_PORT_HANDLE_NOT_VALID: | |
5ffd51a5 | 1846 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fsouh_1", req); |
c41f8cbd | 1847 | /* fall through */ |
1da177e4 | 1848 | case FSF_LUN_ALREADY_OPEN: |
1da177e4 | 1849 | break; |
1da177e4 | 1850 | case FSF_ACCESS_DENIED: |
c41f8cbd | 1851 | zfcp_fsf_access_denied_unit(req, unit); |
1da177e4 | 1852 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
553448f6 | 1853 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); |
1da177e4 | 1854 | break; |
1da177e4 | 1855 | case FSF_PORT_BOXED: |
5ffd51a5 | 1856 | zfcp_erp_port_boxed(unit->port, "fsouh_2", req); |
4c571c65 | 1857 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1858 | break; |
1da177e4 | 1859 | case FSF_LUN_SHARING_VIOLATION: |
c41f8cbd | 1860 | if (header->fsf_status_qual.word[0]) |
553448f6 | 1861 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1862 | "LUN 0x%Lx on port 0x%Lx is already in " |
1863 | "use by CSS%d, MIF Image ID %x\n", | |
7ba58c9c SS |
1864 | (unsigned long long)unit->fcp_lun, |
1865 | (unsigned long long)unit->port->wwpn, | |
ff3b24fa CS |
1866 | queue_designator->cssid, |
1867 | queue_designator->hla); | |
c41f8cbd | 1868 | else |
553448f6 CS |
1869 | zfcp_act_eval_err(adapter, |
1870 | header->fsf_status_qual.word[2]); | |
5ffd51a5 | 1871 | zfcp_erp_unit_access_denied(unit, "fsouh_3", req); |
1da177e4 LT |
1872 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
1873 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); | |
c41f8cbd | 1874 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1875 | break; |
1da177e4 | 1876 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: |
c41f8cbd | 1877 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1878 | "No handle is available for LUN " |
1879 | "0x%016Lx on port 0x%016Lx\n", | |
7ba58c9c SS |
1880 | (unsigned long long)unit->fcp_lun, |
1881 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 1882 | zfcp_erp_unit_failed(unit, "fsouh_4", req); |
c41f8cbd SS |
1883 | /* fall through */ |
1884 | case FSF_INVALID_COMMAND_OPTION: | |
1885 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1886 | break; |
1da177e4 | 1887 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1888 | switch (header->fsf_status_qual.word[0]) { |
1889 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
6f53a2d2 | 1890 | zfcp_fc_test_link(unit->port); |
c41f8cbd | 1891 | /* fall through */ |
1da177e4 | 1892 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1893 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1894 | break; |
1da177e4 LT |
1895 | } |
1896 | break; | |
1897 | ||
1da177e4 | 1898 | case FSF_GOOD: |
1da177e4 | 1899 | unit->handle = header->lun_handle; |
1da177e4 | 1900 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
aef4a983 MS |
1901 | |
1902 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) && | |
1903 | (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) && | |
6fcf41d1 | 1904 | !zfcp_ccw_priv_sch(adapter)) { |
aef4a983 MS |
1905 | exclusive = (bottom->lun_access_info & |
1906 | FSF_UNIT_ACCESS_EXCLUSIVE); | |
1907 | readwrite = (bottom->lun_access_info & | |
1908 | FSF_UNIT_ACCESS_OUTBOUND_TRANSFER); | |
1909 | ||
1da177e4 LT |
1910 | if (!exclusive) |
1911 | atomic_set_mask(ZFCP_STATUS_UNIT_SHARED, | |
1912 | &unit->status); | |
1913 | ||
1914 | if (!readwrite) { | |
1915 | atomic_set_mask(ZFCP_STATUS_UNIT_READONLY, | |
1916 | &unit->status); | |
c41f8cbd | 1917 | dev_info(&adapter->ccw_device->dev, |
ff3b24fa CS |
1918 | "SCSI device at LUN 0x%016Lx on port " |
1919 | "0x%016Lx opened read-only\n", | |
7ba58c9c SS |
1920 | (unsigned long long)unit->fcp_lun, |
1921 | (unsigned long long)unit->port->wwpn); | |
1da177e4 LT |
1922 | } |
1923 | ||
1924 | if (exclusive && !readwrite) { | |
c41f8cbd | 1925 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
1926 | "Exclusive read-only access not " |
1927 | "supported (unit 0x%016Lx, " | |
1928 | "port 0x%016Lx)\n", | |
7ba58c9c SS |
1929 | (unsigned long long)unit->fcp_lun, |
1930 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 1931 | zfcp_erp_unit_failed(unit, "fsouh_5", req); |
c41f8cbd | 1932 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
5ffd51a5 | 1933 | zfcp_erp_unit_shutdown(unit, 0, "fsouh_6", req); |
1da177e4 | 1934 | } else if (!exclusive && readwrite) { |
c41f8cbd | 1935 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
1936 | "Shared read-write access not " |
1937 | "supported (unit 0x%016Lx, port " | |
27c3f0a6 | 1938 | "0x%016Lx)\n", |
7ba58c9c SS |
1939 | (unsigned long long)unit->fcp_lun, |
1940 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 1941 | zfcp_erp_unit_failed(unit, "fsouh_7", req); |
c41f8cbd | 1942 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
5ffd51a5 | 1943 | zfcp_erp_unit_shutdown(unit, 0, "fsouh_8", req); |
1da177e4 LT |
1944 | } |
1945 | } | |
1da177e4 | 1946 | break; |
1da177e4 | 1947 | } |
1da177e4 LT |
1948 | } |
1949 | ||
c41f8cbd SS |
1950 | /** |
1951 | * zfcp_fsf_open_unit - open unit | |
1952 | * @erp_action: pointer to struct zfcp_erp_action | |
1953 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1954 | */ |
c41f8cbd | 1955 | int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) |
1da177e4 | 1956 | { |
44cc76f2 | 1957 | struct qdio_buffer_element *sbale; |
c41f8cbd | 1958 | struct zfcp_adapter *adapter = erp_action->adapter; |
564e1c86 | 1959 | struct zfcp_qdio *qdio = adapter->qdio; |
c41f8cbd SS |
1960 | struct zfcp_fsf_req *req; |
1961 | int retval = -EIO; | |
1962 | ||
564e1c86 SS |
1963 | spin_lock_bh(&qdio->req_q_lock); |
1964 | if (zfcp_fsf_req_sbal_get(qdio)) | |
1da177e4 | 1965 | goto out; |
1da177e4 | 1966 | |
564e1c86 | 1967 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN, |
a4623c46 | 1968 | adapter->pool.erp_req); |
09a46c6e | 1969 | |
025270f0 | 1970 | if (IS_ERR(req)) { |
c41f8cbd SS |
1971 | retval = PTR_ERR(req); |
1972 | goto out; | |
1973 | } | |
1974 | ||
09a46c6e | 1975 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
34c2b712 | 1976 | sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req); |
1da177e4 LT |
1977 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1978 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1979 | ||
c41f8cbd SS |
1980 | req->qtcb->header.port_handle = erp_action->port->handle; |
1981 | req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun; | |
1982 | req->handler = zfcp_fsf_open_unit_handler; | |
1983 | req->data = erp_action->unit; | |
1984 | req->erp_action = erp_action; | |
e60a6d69 | 1985 | erp_action->fsf_req_id = req->req_id; |
c41f8cbd SS |
1986 | |
1987 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) | |
1988 | req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING; | |
1989 | ||
287ac01a | 1990 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1991 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1992 | if (retval) { |
c41f8cbd | 1993 | zfcp_fsf_req_free(req); |
e60a6d69 | 1994 | erp_action->fsf_req_id = 0; |
1da177e4 | 1995 | } |
c41f8cbd | 1996 | out: |
564e1c86 | 1997 | spin_unlock_bh(&qdio->req_q_lock); |
1da177e4 LT |
1998 | return retval; |
1999 | } | |
2000 | ||
c41f8cbd | 2001 | static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2002 | { |
c41f8cbd | 2003 | struct zfcp_unit *unit = req->data; |
1da177e4 | 2004 | |
c41f8cbd | 2005 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 2006 | return; |
1da177e4 | 2007 | |
c41f8cbd | 2008 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 2009 | case FSF_PORT_HANDLE_NOT_VALID: |
5ffd51a5 | 2010 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fscuh_1", req); |
c41f8cbd | 2011 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2012 | break; |
1da177e4 | 2013 | case FSF_LUN_HANDLE_NOT_VALID: |
5ffd51a5 | 2014 | zfcp_erp_port_reopen(unit->port, 0, "fscuh_2", req); |
c41f8cbd | 2015 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2016 | break; |
1da177e4 | 2017 | case FSF_PORT_BOXED: |
5ffd51a5 | 2018 | zfcp_erp_port_boxed(unit->port, "fscuh_3", req); |
4c571c65 | 2019 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2020 | break; |
1da177e4 | 2021 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 2022 | switch (req->qtcb->header.fsf_status_qual.word[0]) { |
1da177e4 | 2023 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
6f53a2d2 | 2024 | zfcp_fc_test_link(unit->port); |
c41f8cbd | 2025 | /* fall through */ |
1da177e4 | 2026 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 2027 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
2028 | break; |
2029 | } | |
2030 | break; | |
1da177e4 | 2031 | case FSF_GOOD: |
1da177e4 | 2032 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
1da177e4 | 2033 | break; |
1da177e4 | 2034 | } |
1da177e4 LT |
2035 | } |
2036 | ||
2037 | /** | |
c41f8cbd SS |
2038 | * zfcp_fsf_close_unit - close zfcp unit |
2039 | * @erp_action: pointer to struct zfcp_unit | |
2040 | * Returns: 0 on success, error otherwise | |
1da177e4 | 2041 | */ |
c41f8cbd | 2042 | int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) |
1da177e4 | 2043 | { |
44cc76f2 | 2044 | struct qdio_buffer_element *sbale; |
564e1c86 | 2045 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
2046 | struct zfcp_fsf_req *req; |
2047 | int retval = -EIO; | |
1da177e4 | 2048 | |
564e1c86 SS |
2049 | spin_lock_bh(&qdio->req_q_lock); |
2050 | if (zfcp_fsf_req_sbal_get(qdio)) | |
1da177e4 | 2051 | goto out; |
09a46c6e | 2052 | |
564e1c86 SS |
2053 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN, |
2054 | qdio->adapter->pool.erp_req); | |
09a46c6e | 2055 | |
025270f0 | 2056 | if (IS_ERR(req)) { |
c41f8cbd SS |
2057 | retval = PTR_ERR(req); |
2058 | goto out; | |
2059 | } | |
1da177e4 | 2060 | |
09a46c6e | 2061 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
34c2b712 | 2062 | sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req); |
c41f8cbd | 2063 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
1da177e4 LT |
2064 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; |
2065 | ||
c41f8cbd SS |
2066 | req->qtcb->header.port_handle = erp_action->port->handle; |
2067 | req->qtcb->header.lun_handle = erp_action->unit->handle; | |
2068 | req->handler = zfcp_fsf_close_unit_handler; | |
2069 | req->data = erp_action->unit; | |
2070 | req->erp_action = erp_action; | |
e60a6d69 | 2071 | erp_action->fsf_req_id = req->req_id; |
fdf23452 | 2072 | |
287ac01a | 2073 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
2074 | retval = zfcp_fsf_req_send(req); |
2075 | if (retval) { | |
2076 | zfcp_fsf_req_free(req); | |
e60a6d69 | 2077 | erp_action->fsf_req_id = 0; |
c41f8cbd SS |
2078 | } |
2079 | out: | |
564e1c86 | 2080 | spin_unlock_bh(&qdio->req_q_lock); |
c41f8cbd | 2081 | return retval; |
1da177e4 LT |
2082 | } |
2083 | ||
c9615858 CS |
2084 | static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat) |
2085 | { | |
2086 | lat_rec->sum += lat; | |
c41f8cbd SS |
2087 | lat_rec->min = min(lat_rec->min, lat); |
2088 | lat_rec->max = max(lat_rec->max, lat); | |
c9615858 CS |
2089 | } |
2090 | ||
d9742b42 | 2091 | static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi) |
c9615858 | 2092 | { |
d9742b42 CS |
2093 | struct fsf_qual_latency_info *lat_in; |
2094 | struct latency_cont *lat = NULL; | |
c41f8cbd | 2095 | struct zfcp_unit *unit = req->unit; |
d9742b42 CS |
2096 | struct zfcp_blk_drv_data blktrc; |
2097 | int ticks = req->adapter->timer_ticks; | |
c9615858 | 2098 | |
d9742b42 | 2099 | lat_in = &req->qtcb->prefix.prot_status_qual.latency_info; |
c9615858 | 2100 | |
d9742b42 CS |
2101 | blktrc.flags = 0; |
2102 | blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC; | |
2103 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
2104 | blktrc.flags |= ZFCP_BLK_REQ_ERROR; | |
34c2b712 CS |
2105 | blktrc.inb_usage = req->qdio_req.qdio_inb_usage; |
2106 | blktrc.outb_usage = req->qdio_req.qdio_outb_usage; | |
d9742b42 | 2107 | |
5bbf297c CS |
2108 | if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA && |
2109 | !(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
d9742b42 CS |
2110 | blktrc.flags |= ZFCP_BLK_LAT_VALID; |
2111 | blktrc.channel_lat = lat_in->channel_lat * ticks; | |
2112 | blktrc.fabric_lat = lat_in->fabric_lat * ticks; | |
2113 | ||
2114 | switch (req->qtcb->bottom.io.data_direction) { | |
2115 | case FSF_DATADIR_READ: | |
2116 | lat = &unit->latencies.read; | |
2117 | break; | |
2118 | case FSF_DATADIR_WRITE: | |
2119 | lat = &unit->latencies.write; | |
2120 | break; | |
2121 | case FSF_DATADIR_CMND: | |
2122 | lat = &unit->latencies.cmd; | |
2123 | break; | |
2124 | } | |
1da177e4 | 2125 | |
d9742b42 CS |
2126 | if (lat) { |
2127 | spin_lock(&unit->latencies.lock); | |
2128 | zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat); | |
2129 | zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat); | |
2130 | lat->counter++; | |
2131 | spin_unlock(&unit->latencies.lock); | |
2132 | } | |
0997f1c5 | 2133 | } |
0997f1c5 | 2134 | |
d9742b42 CS |
2135 | blk_add_driver_data(scsi->request->q, scsi->request, &blktrc, |
2136 | sizeof(blktrc)); | |
0997f1c5 | 2137 | } |
0997f1c5 | 2138 | |
c41f8cbd | 2139 | static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2140 | { |
0ac55aa9 | 2141 | struct scsi_cmnd *scpnt; |
4318e08c | 2142 | struct fcp_resp_with_ext *fcp_rsp; |
1da177e4 | 2143 | unsigned long flags; |
1da177e4 | 2144 | |
c41f8cbd SS |
2145 | read_lock_irqsave(&req->adapter->abort_lock, flags); |
2146 | ||
0ac55aa9 SS |
2147 | scpnt = req->data; |
2148 | if (unlikely(!scpnt)) { | |
2149 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); | |
2150 | return; | |
2151 | } | |
2152 | ||
c41f8cbd | 2153 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { |
4c571c65 | 2154 | set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED); |
1da177e4 LT |
2155 | goto skip_fsfstatus; |
2156 | } | |
2157 | ||
4318e08c CS |
2158 | fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp; |
2159 | zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt); | |
1da177e4 | 2160 | |
c41f8cbd | 2161 | skip_fsfstatus: |
5bbf297c | 2162 | zfcp_fsf_req_trace(req, scpnt); |
ab72528a | 2163 | zfcp_dbf_scsi_result(req->adapter->dbf, scpnt, req); |
1da177e4 | 2164 | |
1da177e4 | 2165 | scpnt->host_scribble = NULL; |
1da177e4 | 2166 | (scpnt->scsi_done) (scpnt); |
1da177e4 LT |
2167 | /* |
2168 | * We must hold this lock until scsi_done has been called. | |
2169 | * Otherwise we may call scsi_done after abort regarding this | |
2170 | * command has completed. | |
2171 | * Note: scsi_done must not block! | |
2172 | */ | |
c41f8cbd | 2173 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); |
1da177e4 LT |
2174 | } |
2175 | ||
c41f8cbd | 2176 | static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *req) |
1da177e4 | 2177 | { |
4318e08c CS |
2178 | struct fcp_resp_with_ext *fcp_rsp; |
2179 | struct fcp_resp_rsp_info *rsp_info; | |
1da177e4 | 2180 | |
4318e08c CS |
2181 | fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp; |
2182 | rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1]; | |
2183 | ||
2184 | if ((rsp_info->rsp_code != FCP_TMF_CMPL) || | |
c41f8cbd SS |
2185 | (req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
2186 | req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
2187 | } | |
2188 | ||
2189 | ||
2190 | static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req) | |
2191 | { | |
2192 | struct zfcp_unit *unit; | |
2193 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
2194 | ||
2195 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)) | |
2196 | unit = req->data; | |
2197 | else | |
2198 | unit = req->unit; | |
2199 | ||
2200 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
1da177e4 | 2201 | goto skip_fsfstatus; |
1da177e4 | 2202 | |
c41f8cbd SS |
2203 | switch (header->fsf_status) { |
2204 | case FSF_HANDLE_MISMATCH: | |
2205 | case FSF_PORT_HANDLE_NOT_VALID: | |
5ffd51a5 | 2206 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fssfch1", req); |
c41f8cbd SS |
2207 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2208 | break; | |
2209 | case FSF_FCPLUN_NOT_VALID: | |
2210 | case FSF_LUN_HANDLE_NOT_VALID: | |
5ffd51a5 | 2211 | zfcp_erp_port_reopen(unit->port, 0, "fssfch2", req); |
c41f8cbd | 2212 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2213 | break; |
c41f8cbd SS |
2214 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
2215 | zfcp_fsf_class_not_supp(req); | |
1da177e4 | 2216 | break; |
c41f8cbd SS |
2217 | case FSF_ACCESS_DENIED: |
2218 | zfcp_fsf_access_denied_unit(req, unit); | |
2219 | break; | |
2220 | case FSF_DIRECTION_INDICATOR_NOT_VALID: | |
2221 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
2222 | "Incorrect direction %d, unit 0x%016Lx on port " |
2223 | "0x%016Lx closed\n", | |
c41f8cbd | 2224 | req->qtcb->bottom.io.data_direction, |
7ba58c9c SS |
2225 | (unsigned long long)unit->fcp_lun, |
2226 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 SS |
2227 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch3", |
2228 | req); | |
c41f8cbd SS |
2229 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2230 | break; | |
2231 | case FSF_CMND_LENGTH_NOT_VALID: | |
2232 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
2233 | "Incorrect CDB length %d, unit 0x%016Lx on " |
2234 | "port 0x%016Lx closed\n", | |
c41f8cbd | 2235 | req->qtcb->bottom.io.fcp_cmnd_length, |
7ba58c9c SS |
2236 | (unsigned long long)unit->fcp_lun, |
2237 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 SS |
2238 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch4", |
2239 | req); | |
c41f8cbd SS |
2240 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2241 | break; | |
2242 | case FSF_PORT_BOXED: | |
5ffd51a5 | 2243 | zfcp_erp_port_boxed(unit->port, "fssfch5", req); |
4c571c65 | 2244 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
2245 | break; |
2246 | case FSF_LUN_BOXED: | |
5ffd51a5 | 2247 | zfcp_erp_unit_boxed(unit, "fssfch6", req); |
4c571c65 | 2248 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
2249 | break; |
2250 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
2251 | if (header->fsf_status_qual.word[0] == | |
2252 | FSF_SQ_INVOKE_LINK_TEST_PROCEDURE) | |
6f53a2d2 | 2253 | zfcp_fc_test_link(unit->port); |
c41f8cbd | 2254 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2255 | break; |
1da177e4 | 2256 | } |
c41f8cbd SS |
2257 | skip_fsfstatus: |
2258 | if (req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT) | |
2259 | zfcp_fsf_send_fcp_ctm_handler(req); | |
2260 | else { | |
2261 | zfcp_fsf_send_fcp_command_task_handler(req); | |
2262 | req->unit = NULL; | |
615f59e0 | 2263 | put_device(&unit->dev); |
c41f8cbd | 2264 | } |
1da177e4 LT |
2265 | } |
2266 | ||
c41f8cbd SS |
2267 | /** |
2268 | * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command) | |
c41f8cbd SS |
2269 | * @unit: unit where command is sent to |
2270 | * @scsi_cmnd: scsi command to be sent | |
1da177e4 | 2271 | */ |
63caf367 CS |
2272 | int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit, |
2273 | struct scsi_cmnd *scsi_cmnd) | |
1da177e4 | 2274 | { |
c41f8cbd | 2275 | struct zfcp_fsf_req *req; |
4318e08c | 2276 | struct fcp_cmnd *fcp_cmnd; |
bc90c863 | 2277 | unsigned int sbtype = SBAL_FLAGS0_TYPE_READ; |
c41f8cbd | 2278 | int real_bytes, retval = -EIO; |
63caf367 | 2279 | struct zfcp_adapter *adapter = unit->port->adapter; |
564e1c86 | 2280 | struct zfcp_qdio *qdio = adapter->qdio; |
1da177e4 | 2281 | |
c41f8cbd SS |
2282 | if (unlikely(!(atomic_read(&unit->status) & |
2283 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2284 | return -EBUSY; | |
1da177e4 | 2285 | |
564e1c86 SS |
2286 | spin_lock(&qdio->req_q_lock); |
2287 | if (atomic_read(&qdio->req_q.count) <= 0) { | |
2288 | atomic_inc(&qdio->req_q_full); | |
c41f8cbd | 2289 | goto out; |
8fdf30d5 | 2290 | } |
09a46c6e | 2291 | |
564e1c86 | 2292 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND, |
a4623c46 | 2293 | adapter->pool.scsi_req); |
09a46c6e | 2294 | |
025270f0 | 2295 | if (IS_ERR(req)) { |
c41f8cbd SS |
2296 | retval = PTR_ERR(req); |
2297 | goto out; | |
2298 | } | |
2299 | ||
09a46c6e | 2300 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
615f59e0 | 2301 | get_device(&unit->dev); |
c41f8cbd SS |
2302 | req->unit = unit; |
2303 | req->data = scsi_cmnd; | |
2304 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2305 | req->qtcb->header.lun_handle = unit->handle; | |
2306 | req->qtcb->header.port_handle = unit->port->handle; | |
2307 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
4318e08c | 2308 | req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN; |
c41f8cbd SS |
2309 | |
2310 | scsi_cmnd->host_scribble = (unsigned char *) req->req_id; | |
2311 | ||
c41f8cbd SS |
2312 | /* |
2313 | * set depending on data direction: | |
2314 | * data direction bits in SBALE (SB Type) | |
2315 | * data direction bits in QTCB | |
c41f8cbd SS |
2316 | */ |
2317 | switch (scsi_cmnd->sc_data_direction) { | |
2318 | case DMA_NONE: | |
2319 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
1da177e4 | 2320 | break; |
c41f8cbd SS |
2321 | case DMA_FROM_DEVICE: |
2322 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ; | |
c41f8cbd SS |
2323 | break; |
2324 | case DMA_TO_DEVICE: | |
2325 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE; | |
2326 | sbtype = SBAL_FLAGS0_TYPE_WRITE; | |
1da177e4 | 2327 | break; |
c41f8cbd | 2328 | case DMA_BIDIRECTIONAL: |
c41f8cbd | 2329 | goto failed_scsi_cmnd; |
1da177e4 LT |
2330 | } |
2331 | ||
4318e08c CS |
2332 | fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd; |
2333 | zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd); | |
1da177e4 | 2334 | |
34c2b712 | 2335 | real_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sbtype, |
c41f8cbd SS |
2336 | scsi_sglist(scsi_cmnd), |
2337 | FSF_MAX_SBALS_PER_REQ); | |
2338 | if (unlikely(real_bytes < 0)) { | |
34c2b712 | 2339 | if (req->qdio_req.sbal_number >= FSF_MAX_SBALS_PER_REQ) { |
c41f8cbd | 2340 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
2341 | "Oversize data package, unit 0x%016Lx " |
2342 | "on port 0x%016Lx closed\n", | |
7ba58c9c SS |
2343 | (unsigned long long)unit->fcp_lun, |
2344 | (unsigned long long)unit->port->wwpn); | |
5ffd51a5 | 2345 | zfcp_erp_unit_shutdown(unit, 0, "fssfct1", req); |
c41f8cbd SS |
2346 | retval = -EINVAL; |
2347 | } | |
2348 | goto failed_scsi_cmnd; | |
1da177e4 | 2349 | } |
1da177e4 | 2350 | |
c41f8cbd SS |
2351 | retval = zfcp_fsf_req_send(req); |
2352 | if (unlikely(retval)) | |
2353 | goto failed_scsi_cmnd; | |
1da177e4 | 2354 | |
c41f8cbd | 2355 | goto out; |
1da177e4 | 2356 | |
c41f8cbd | 2357 | failed_scsi_cmnd: |
615f59e0 | 2358 | put_device(&unit->dev); |
c41f8cbd SS |
2359 | zfcp_fsf_req_free(req); |
2360 | scsi_cmnd->host_scribble = NULL; | |
2361 | out: | |
564e1c86 | 2362 | spin_unlock(&qdio->req_q_lock); |
c41f8cbd | 2363 | return retval; |
1da177e4 LT |
2364 | } |
2365 | ||
2366 | /** | |
c41f8cbd | 2367 | * zfcp_fsf_send_fcp_ctm - send SCSI task management command |
c41f8cbd SS |
2368 | * @unit: pointer to struct zfcp_unit |
2369 | * @tm_flags: unsigned byte for task management flags | |
c41f8cbd | 2370 | * Returns: on success pointer to struct fsf_req, NULL otherwise |
1da177e4 | 2371 | */ |
63caf367 | 2372 | struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *unit, u8 tm_flags) |
1da177e4 | 2373 | { |
44cc76f2 | 2374 | struct qdio_buffer_element *sbale; |
c41f8cbd | 2375 | struct zfcp_fsf_req *req = NULL; |
4318e08c | 2376 | struct fcp_cmnd *fcp_cmnd; |
564e1c86 | 2377 | struct zfcp_qdio *qdio = unit->port->adapter->qdio; |
1da177e4 | 2378 | |
c41f8cbd SS |
2379 | if (unlikely(!(atomic_read(&unit->status) & |
2380 | ZFCP_STATUS_COMMON_UNBLOCKED))) | |
2381 | return NULL; | |
1da177e4 | 2382 | |
564e1c86 SS |
2383 | spin_lock_bh(&qdio->req_q_lock); |
2384 | if (zfcp_fsf_req_sbal_get(qdio)) | |
c41f8cbd | 2385 | goto out; |
09a46c6e | 2386 | |
564e1c86 SS |
2387 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND, |
2388 | qdio->adapter->pool.scsi_req); | |
09a46c6e | 2389 | |
633528c3 SS |
2390 | if (IS_ERR(req)) { |
2391 | req = NULL; | |
c41f8cbd | 2392 | goto out; |
633528c3 | 2393 | } |
1da177e4 | 2394 | |
c41f8cbd SS |
2395 | req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT; |
2396 | req->data = unit; | |
2397 | req->handler = zfcp_fsf_send_fcp_command_handler; | |
2398 | req->qtcb->header.lun_handle = unit->handle; | |
2399 | req->qtcb->header.port_handle = unit->port->handle; | |
2400 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; | |
2401 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
4318e08c | 2402 | req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN; |
c41f8cbd | 2403 | |
34c2b712 | 2404 | sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req); |
c41f8cbd SS |
2405 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE; |
2406 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; | |
1da177e4 | 2407 | |
4318e08c CS |
2408 | fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd; |
2409 | zfcp_fc_fcp_tm(fcp_cmnd, unit->device, tm_flags); | |
1da177e4 | 2410 | |
c41f8cbd SS |
2411 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); |
2412 | if (!zfcp_fsf_req_send(req)) | |
2413 | goto out; | |
1da177e4 | 2414 | |
c41f8cbd SS |
2415 | zfcp_fsf_req_free(req); |
2416 | req = NULL; | |
2417 | out: | |
564e1c86 | 2418 | spin_unlock_bh(&qdio->req_q_lock); |
c41f8cbd SS |
2419 | return req; |
2420 | } | |
1da177e4 | 2421 | |
c41f8cbd SS |
2422 | static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req) |
2423 | { | |
1da177e4 LT |
2424 | } |
2425 | ||
c41f8cbd SS |
2426 | /** |
2427 | * zfcp_fsf_control_file - control file upload/download | |
2428 | * @adapter: pointer to struct zfcp_adapter | |
2429 | * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc | |
2430 | * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise | |
1da177e4 | 2431 | */ |
c41f8cbd SS |
2432 | struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, |
2433 | struct zfcp_fsf_cfdc *fsf_cfdc) | |
1da177e4 | 2434 | { |
44cc76f2 | 2435 | struct qdio_buffer_element *sbale; |
564e1c86 | 2436 | struct zfcp_qdio *qdio = adapter->qdio; |
c41f8cbd SS |
2437 | struct zfcp_fsf_req *req = NULL; |
2438 | struct fsf_qtcb_bottom_support *bottom; | |
2439 | int direction, retval = -EIO, bytes; | |
2440 | ||
2441 | if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) | |
2442 | return ERR_PTR(-EOPNOTSUPP); | |
2443 | ||
2444 | switch (fsf_cfdc->command) { | |
2445 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
2446 | direction = SBAL_FLAGS0_TYPE_WRITE; | |
2447 | break; | |
2448 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
2449 | direction = SBAL_FLAGS0_TYPE_READ; | |
2450 | break; | |
2451 | default: | |
2452 | return ERR_PTR(-EINVAL); | |
2453 | } | |
1da177e4 | 2454 | |
564e1c86 SS |
2455 | spin_lock_bh(&qdio->req_q_lock); |
2456 | if (zfcp_fsf_req_sbal_get(qdio)) | |
c41f8cbd | 2457 | goto out; |
1da177e4 | 2458 | |
564e1c86 | 2459 | req = zfcp_fsf_req_create(qdio, fsf_cfdc->command, NULL); |
025270f0 | 2460 | if (IS_ERR(req)) { |
c41f8cbd SS |
2461 | retval = -EPERM; |
2462 | goto out; | |
2463 | } | |
1da177e4 | 2464 | |
c41f8cbd | 2465 | req->handler = zfcp_fsf_control_file_handler; |
1da177e4 | 2466 | |
34c2b712 | 2467 | sbale = zfcp_qdio_sbale_req(qdio, &req->qdio_req); |
c41f8cbd | 2468 | sbale[0].flags |= direction; |
8a36e453 | 2469 | |
c41f8cbd SS |
2470 | bottom = &req->qtcb->bottom.support; |
2471 | bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE; | |
2472 | bottom->option = fsf_cfdc->option; | |
8a36e453 | 2473 | |
34c2b712 | 2474 | bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, |
564e1c86 SS |
2475 | direction, fsf_cfdc->sg, |
2476 | FSF_MAX_SBALS_PER_REQ); | |
c41f8cbd | 2477 | if (bytes != ZFCP_CFDC_MAX_SIZE) { |
c41f8cbd SS |
2478 | zfcp_fsf_req_free(req); |
2479 | goto out; | |
2480 | } | |
1da177e4 | 2481 | |
c41f8cbd SS |
2482 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
2483 | retval = zfcp_fsf_req_send(req); | |
2484 | out: | |
564e1c86 | 2485 | spin_unlock_bh(&qdio->req_q_lock); |
8a36e453 | 2486 | |
c41f8cbd | 2487 | if (!retval) { |
058b8647 | 2488 | wait_for_completion(&req->completion); |
c41f8cbd | 2489 | return req; |
1da177e4 | 2490 | } |
c41f8cbd | 2491 | return ERR_PTR(retval); |
1da177e4 | 2492 | } |
bd63eaf4 SS |
2493 | |
2494 | /** | |
2495 | * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO | |
2496 | * @adapter: pointer to struct zfcp_adapter | |
2497 | * @sbal_idx: response queue index of SBAL to be processed | |
2498 | */ | |
564e1c86 | 2499 | void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx) |
bd63eaf4 | 2500 | { |
564e1c86 SS |
2501 | struct zfcp_adapter *adapter = qdio->adapter; |
2502 | struct qdio_buffer *sbal = qdio->resp_q.sbal[sbal_idx]; | |
bd63eaf4 SS |
2503 | struct qdio_buffer_element *sbale; |
2504 | struct zfcp_fsf_req *fsf_req; | |
b6bd2fb9 | 2505 | unsigned long req_id; |
bd63eaf4 SS |
2506 | int idx; |
2507 | ||
2508 | for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) { | |
2509 | ||
2510 | sbale = &sbal->element[idx]; | |
2511 | req_id = (unsigned long) sbale->addr; | |
b6bd2fb9 | 2512 | fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id); |
bd63eaf4 SS |
2513 | |
2514 | if (!fsf_req) | |
2515 | /* | |
2516 | * Unknown request means that we have potentially memory | |
2517 | * corruption and must stop the machine immediately. | |
2518 | */ | |
2519 | panic("error: unknown req_id (%lx) on adapter %s.\n", | |
2520 | req_id, dev_name(&adapter->ccw_device->dev)); | |
2521 | ||
34c2b712 CS |
2522 | fsf_req->qdio_req.sbal_response = sbal_idx; |
2523 | fsf_req->qdio_req.qdio_inb_usage = | |
564e1c86 | 2524 | atomic_read(&qdio->resp_q.count); |
bd63eaf4 SS |
2525 | zfcp_fsf_req_complete(fsf_req); |
2526 | ||
2527 | if (likely(sbale->flags & SBAL_FLAGS_LAST_ENTRY)) | |
2528 | break; | |
2529 | } | |
2530 | } |