Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
553448f6 | 2 | * zfcp device driver |
1da177e4 | 3 | * |
553448f6 | 4 | * Implementation of FSF commands. |
1da177e4 | 5 | * |
615f59e0 | 6 | * Copyright IBM Corporation 2002, 2010 |
1da177e4 LT |
7 | */ |
8 | ||
ecf39d42 CS |
9 | #define KMSG_COMPONENT "zfcp" |
10 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt | |
11 | ||
0997f1c5 | 12 | #include <linux/blktrace_api.h> |
5a0e3ad6 | 13 | #include <linux/slab.h> |
9d05ce2c | 14 | #include <scsi/fc/fc_els.h> |
1da177e4 | 15 | #include "zfcp_ext.h" |
4318e08c | 16 | #include "zfcp_fc.h" |
dcd20e23 | 17 | #include "zfcp_dbf.h" |
34c2b712 | 18 | #include "zfcp_qdio.h" |
b6bd2fb9 | 19 | #include "zfcp_reqlist.h" |
1da177e4 | 20 | |
287ac01a CS |
21 | static void zfcp_fsf_request_timeout_handler(unsigned long data) |
22 | { | |
23 | struct zfcp_adapter *adapter = (struct zfcp_adapter *) data; | |
339f4f4e | 24 | zfcp_qdio_siosl(adapter); |
5ffd51a5 | 25 | zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, |
ea4a3a6a | 26 | "fsrth_1"); |
287ac01a CS |
27 | } |
28 | ||
29 | static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req, | |
30 | unsigned long timeout) | |
31 | { | |
32 | fsf_req->timer.function = zfcp_fsf_request_timeout_handler; | |
33 | fsf_req->timer.data = (unsigned long) fsf_req->adapter; | |
34 | fsf_req->timer.expires = jiffies + timeout; | |
35 | add_timer(&fsf_req->timer); | |
36 | } | |
37 | ||
38 | static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req) | |
39 | { | |
40 | BUG_ON(!fsf_req->erp_action); | |
41 | fsf_req->timer.function = zfcp_erp_timeout_handler; | |
42 | fsf_req->timer.data = (unsigned long) fsf_req->erp_action; | |
43 | fsf_req->timer.expires = jiffies + 30 * HZ; | |
44 | add_timer(&fsf_req->timer); | |
45 | } | |
46 | ||
1da177e4 LT |
47 | /* association between FSF command and FSF QTCB type */ |
48 | static u32 fsf_qtcb_type[] = { | |
49 | [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND, | |
50 | [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND, | |
51 | [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND, | |
52 | [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND, | |
53 | [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND, | |
54 | [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND, | |
55 | [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND, | |
56 | [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND, | |
57 | [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND, | |
58 | [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND, | |
59 | [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND, | |
60 | [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND, | |
61 | [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND | |
62 | }; | |
63 | ||
553448f6 CS |
64 | static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req) |
65 | { | |
ff3b24fa CS |
66 | dev_err(&req->adapter->ccw_device->dev, "FCP device not " |
67 | "operational because of an unsupported FC class\n"); | |
ea4a3a6a | 68 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fscns_1"); |
553448f6 CS |
69 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
70 | } | |
71 | ||
c41f8cbd SS |
72 | /** |
73 | * zfcp_fsf_req_free - free memory used by fsf request | |
74 | * @fsf_req: pointer to struct zfcp_fsf_req | |
1da177e4 | 75 | */ |
c41f8cbd | 76 | void zfcp_fsf_req_free(struct zfcp_fsf_req *req) |
1da177e4 | 77 | { |
c41f8cbd | 78 | if (likely(req->pool)) { |
a4623c46 SS |
79 | if (likely(req->qtcb)) |
80 | mempool_free(req->qtcb, req->adapter->pool.qtcb_pool); | |
c41f8cbd | 81 | mempool_free(req, req->pool); |
dd52e0ea HC |
82 | return; |
83 | } | |
84 | ||
a4623c46 SS |
85 | if (likely(req->qtcb)) |
86 | kmem_cache_free(zfcp_data.qtcb_cache, req->qtcb); | |
87 | kfree(req); | |
1da177e4 LT |
88 | } |
89 | ||
c41f8cbd | 90 | static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req) |
1da177e4 | 91 | { |
ecf0c772 | 92 | unsigned long flags; |
c41f8cbd SS |
93 | struct fsf_status_read_buffer *sr_buf = req->data; |
94 | struct zfcp_adapter *adapter = req->adapter; | |
95 | struct zfcp_port *port; | |
800c0cad | 96 | int d_id = ntoh24(sr_buf->d_id); |
1da177e4 | 97 | |
ecf0c772 SS |
98 | read_lock_irqsave(&adapter->port_list_lock, flags); |
99 | list_for_each_entry(port, &adapter->port_list, list) | |
c41f8cbd | 100 | if (port->d_id == d_id) { |
ea4a3a6a | 101 | zfcp_erp_port_reopen(port, 0, "fssrpc1"); |
ecf0c772 | 102 | break; |
c41f8cbd | 103 | } |
ecf0c772 | 104 | read_unlock_irqrestore(&adapter->port_list_lock, flags); |
1da177e4 LT |
105 | } |
106 | ||
edaed859 | 107 | static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, |
c41f8cbd | 108 | struct fsf_link_down_info *link_down) |
aef4a983 | 109 | { |
c41f8cbd | 110 | struct zfcp_adapter *adapter = req->adapter; |
698ec016 | 111 | |
c41f8cbd | 112 | if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED) |
ee69ab7a MS |
113 | return; |
114 | ||
115 | atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status); | |
70932935 | 116 | |
a2fa0aed | 117 | zfcp_scsi_schedule_rports_block(adapter); |
ee69ab7a | 118 | |
c41f8cbd | 119 | if (!link_down) |
2f8f3ed5 | 120 | goto out; |
ee69ab7a | 121 | |
aef4a983 MS |
122 | switch (link_down->error_code) { |
123 | case FSF_PSQ_LINK_NO_LIGHT: | |
c41f8cbd | 124 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
125 | "There is no light signal from the local " |
126 | "fibre channel cable\n"); | |
aef4a983 MS |
127 | break; |
128 | case FSF_PSQ_LINK_WRAP_PLUG: | |
c41f8cbd | 129 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
130 | "There is a wrap plug instead of a fibre " |
131 | "channel cable\n"); | |
aef4a983 MS |
132 | break; |
133 | case FSF_PSQ_LINK_NO_FCP: | |
c41f8cbd | 134 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
135 | "The adjacent fibre channel node does not " |
136 | "support FCP\n"); | |
aef4a983 MS |
137 | break; |
138 | case FSF_PSQ_LINK_FIRMWARE_UPDATE: | |
c41f8cbd | 139 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
140 | "The FCP device is suspended because of a " |
141 | "firmware update\n"); | |
553448f6 | 142 | break; |
aef4a983 | 143 | case FSF_PSQ_LINK_INVALID_WWPN: |
c41f8cbd | 144 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
145 | "The FCP device detected a WWPN that is " |
146 | "duplicate or not valid\n"); | |
aef4a983 MS |
147 | break; |
148 | case FSF_PSQ_LINK_NO_NPIV_SUPPORT: | |
c41f8cbd | 149 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 150 | "The fibre channel fabric does not support NPIV\n"); |
aef4a983 MS |
151 | break; |
152 | case FSF_PSQ_LINK_NO_FCP_RESOURCES: | |
c41f8cbd | 153 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 154 | "The FCP adapter cannot support more NPIV ports\n"); |
aef4a983 MS |
155 | break; |
156 | case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: | |
c41f8cbd | 157 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
158 | "The adjacent switch cannot support " |
159 | "more NPIV ports\n"); | |
aef4a983 MS |
160 | break; |
161 | case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: | |
c41f8cbd | 162 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
163 | "The FCP adapter could not log in to the " |
164 | "fibre channel fabric\n"); | |
aef4a983 MS |
165 | break; |
166 | case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: | |
c41f8cbd | 167 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
168 | "The WWPN assignment file on the FCP adapter " |
169 | "has been damaged\n"); | |
aef4a983 MS |
170 | break; |
171 | case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: | |
c41f8cbd | 172 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
173 | "The mode table on the FCP adapter " |
174 | "has been damaged\n"); | |
aef4a983 MS |
175 | break; |
176 | case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: | |
c41f8cbd | 177 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
178 | "All NPIV ports on the FCP adapter have " |
179 | "been assigned\n"); | |
aef4a983 MS |
180 | break; |
181 | default: | |
c41f8cbd | 182 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
183 | "The link between the FCP adapter and " |
184 | "the FC fabric is down\n"); | |
aef4a983 | 185 | } |
c41f8cbd | 186 | out: |
edaed859 | 187 | zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_ERP_FAILED); |
aef4a983 MS |
188 | } |
189 | ||
c41f8cbd | 190 | static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req) |
1da177e4 | 191 | { |
c41f8cbd SS |
192 | struct fsf_status_read_buffer *sr_buf = req->data; |
193 | struct fsf_link_down_info *ldi = | |
194 | (struct fsf_link_down_info *) &sr_buf->payload; | |
1da177e4 | 195 | |
c41f8cbd SS |
196 | switch (sr_buf->status_subtype) { |
197 | case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: | |
edaed859 | 198 | zfcp_fsf_link_down_info_eval(req, ldi); |
1da177e4 | 199 | break; |
c41f8cbd | 200 | case FSF_STATUS_READ_SUB_FDISC_FAILED: |
edaed859 | 201 | zfcp_fsf_link_down_info_eval(req, ldi); |
1da177e4 | 202 | break; |
c41f8cbd | 203 | case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE: |
edaed859 | 204 | zfcp_fsf_link_down_info_eval(req, NULL); |
c41f8cbd SS |
205 | }; |
206 | } | |
1da177e4 | 207 | |
c41f8cbd SS |
208 | static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) |
209 | { | |
210 | struct zfcp_adapter *adapter = req->adapter; | |
211 | struct fsf_status_read_buffer *sr_buf = req->data; | |
1da177e4 | 212 | |
c41f8cbd | 213 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
a54ca0f6 | 214 | zfcp_dbf_hba_fsf_uss("fssrh_1", req); |
a4623c46 | 215 | mempool_free(sr_buf, adapter->pool.status_read_data); |
c41f8cbd SS |
216 | zfcp_fsf_req_free(req); |
217 | return; | |
218 | } | |
1da177e4 | 219 | |
a54ca0f6 | 220 | zfcp_dbf_hba_fsf_uss("fssrh_2", req); |
1da177e4 | 221 | |
c41f8cbd SS |
222 | switch (sr_buf->status_type) { |
223 | case FSF_STATUS_READ_PORT_CLOSED: | |
224 | zfcp_fsf_status_read_port_closed(req); | |
1da177e4 | 225 | break; |
c41f8cbd SS |
226 | case FSF_STATUS_READ_INCOMING_ELS: |
227 | zfcp_fc_incoming_els(req); | |
1da177e4 | 228 | break; |
c41f8cbd | 229 | case FSF_STATUS_READ_SENSE_DATA_AVAIL: |
1da177e4 | 230 | break; |
c41f8cbd | 231 | case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: |
ff3b24fa CS |
232 | dev_warn(&adapter->ccw_device->dev, |
233 | "The error threshold for checksum statistics " | |
234 | "has been exceeded\n"); | |
a54ca0f6 | 235 | zfcp_dbf_hba_bit_err("fssrh_3", req); |
1da177e4 | 236 | break; |
c41f8cbd SS |
237 | case FSF_STATUS_READ_LINK_DOWN: |
238 | zfcp_fsf_status_read_link_down(req); | |
2d1e547f | 239 | zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKDOWN, 0); |
c41f8cbd SS |
240 | break; |
241 | case FSF_STATUS_READ_LINK_UP: | |
242 | dev_info(&adapter->ccw_device->dev, | |
ff3b24fa | 243 | "The local link has been restored\n"); |
c41f8cbd | 244 | /* All ports should be marked as ready to run again */ |
edaed859 SS |
245 | zfcp_erp_set_adapter_status(adapter, |
246 | ZFCP_STATUS_COMMON_RUNNING); | |
c41f8cbd SS |
247 | zfcp_erp_adapter_reopen(adapter, |
248 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
249 | ZFCP_STATUS_COMMON_ERP_FAILED, | |
ea4a3a6a | 250 | "fssrh_2"); |
2d1e547f SS |
251 | zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKUP, 0); |
252 | ||
c41f8cbd SS |
253 | break; |
254 | case FSF_STATUS_READ_NOTIFICATION_LOST: | |
255 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED) | |
a1ca4831 | 256 | zfcp_cfdc_adapter_access_changed(adapter); |
c41f8cbd | 257 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS) |
9eae07ef | 258 | queue_work(adapter->work_queue, &adapter->scan_work); |
c41f8cbd SS |
259 | break; |
260 | case FSF_STATUS_READ_CFDC_UPDATED: | |
a1ca4831 | 261 | zfcp_cfdc_adapter_access_changed(adapter); |
c41f8cbd SS |
262 | break; |
263 | case FSF_STATUS_READ_FEATURE_UPDATE_ALERT: | |
264 | adapter->adapter_features = sr_buf->payload.word[0]; | |
1da177e4 | 265 | break; |
1da177e4 LT |
266 | } |
267 | ||
a4623c46 | 268 | mempool_free(sr_buf, adapter->pool.status_read_data); |
c41f8cbd | 269 | zfcp_fsf_req_free(req); |
1da177e4 | 270 | |
c41f8cbd | 271 | atomic_inc(&adapter->stat_miss); |
4544683a | 272 | queue_work(adapter->work_queue, &adapter->stat_work); |
c41f8cbd | 273 | } |
1da177e4 | 274 | |
c41f8cbd SS |
275 | static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req) |
276 | { | |
277 | switch (req->qtcb->header.fsf_status_qual.word[0]) { | |
278 | case FSF_SQ_FCP_RSP_AVAILABLE: | |
279 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
280 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
281 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
282 | return; | |
283 | case FSF_SQ_COMMAND_ABORTED: | |
c41f8cbd SS |
284 | break; |
285 | case FSF_SQ_NO_RECOM: | |
286 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
287 | "The FCP adapter reported a problem " |
288 | "that cannot be recovered\n"); | |
339f4f4e | 289 | zfcp_qdio_siosl(req->adapter); |
ea4a3a6a | 290 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1"); |
c41f8cbd SS |
291 | break; |
292 | } | |
293 | /* all non-return stats set FSFREQ_ERROR*/ | |
294 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
295 | } |
296 | ||
c41f8cbd | 297 | static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req) |
1da177e4 | 298 | { |
c41f8cbd SS |
299 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
300 | return; | |
1da177e4 | 301 | |
c41f8cbd SS |
302 | switch (req->qtcb->header.fsf_status) { |
303 | case FSF_UNKNOWN_COMMAND: | |
304 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa | 305 | "The FCP adapter does not recognize the command 0x%x\n", |
c41f8cbd | 306 | req->qtcb->header.fsf_command); |
ea4a3a6a | 307 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1"); |
c41f8cbd SS |
308 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
309 | break; | |
310 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
311 | zfcp_fsf_fsfstatus_qual_eval(req); | |
312 | break; | |
313 | } | |
314 | } | |
1da177e4 | 315 | |
c41f8cbd SS |
316 | static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) |
317 | { | |
318 | struct zfcp_adapter *adapter = req->adapter; | |
319 | struct fsf_qtcb *qtcb = req->qtcb; | |
320 | union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual; | |
1da177e4 | 321 | |
5771710b | 322 | zfcp_dbf_hba_fsf_response(req); |
1da177e4 | 323 | |
c41f8cbd | 324 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
4c571c65 | 325 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
326 | return; |
327 | } | |
1da177e4 | 328 | |
c41f8cbd SS |
329 | switch (qtcb->prefix.prot_status) { |
330 | case FSF_PROT_GOOD: | |
331 | case FSF_PROT_FSF_STATUS_PRESENTED: | |
332 | return; | |
333 | case FSF_PROT_QTCB_VERSION_ERROR: | |
334 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
335 | "QTCB version 0x%x not supported by FCP adapter " |
336 | "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION, | |
337 | psq->word[0], psq->word[1]); | |
ea4a3a6a | 338 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1"); |
c41f8cbd SS |
339 | break; |
340 | case FSF_PROT_ERROR_STATE: | |
341 | case FSF_PROT_SEQ_NUMB_ERROR: | |
ea4a3a6a | 342 | zfcp_erp_adapter_reopen(adapter, 0, "fspse_2"); |
4c571c65 | 343 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
344 | break; |
345 | case FSF_PROT_UNSUPP_QTCB_TYPE: | |
346 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 347 | "The QTCB type is not supported by the FCP adapter\n"); |
ea4a3a6a | 348 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3"); |
c41f8cbd SS |
349 | break; |
350 | case FSF_PROT_HOST_CONNECTION_INITIALIZING: | |
351 | atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT, | |
352 | &adapter->status); | |
353 | break; | |
354 | case FSF_PROT_DUPLICATE_REQUEST_ID: | |
355 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 356 | "0x%Lx is an ambiguous request identifier\n", |
c41f8cbd | 357 | (unsigned long long)qtcb->bottom.support.req_handle); |
ea4a3a6a | 358 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_4"); |
c41f8cbd SS |
359 | break; |
360 | case FSF_PROT_LINK_DOWN: | |
edaed859 | 361 | zfcp_fsf_link_down_info_eval(req, &psq->link_down_info); |
452b505c | 362 | /* go through reopen to flush pending requests */ |
ea4a3a6a | 363 | zfcp_erp_adapter_reopen(adapter, 0, "fspse_6"); |
c41f8cbd SS |
364 | break; |
365 | case FSF_PROT_REEST_QUEUE: | |
366 | /* All ports should be marked as ready to run again */ | |
edaed859 SS |
367 | zfcp_erp_set_adapter_status(adapter, |
368 | ZFCP_STATUS_COMMON_RUNNING); | |
c41f8cbd SS |
369 | zfcp_erp_adapter_reopen(adapter, |
370 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
5ffd51a5 | 371 | ZFCP_STATUS_COMMON_ERP_FAILED, |
ea4a3a6a | 372 | "fspse_8"); |
c41f8cbd SS |
373 | break; |
374 | default: | |
375 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 376 | "0x%x is not a valid transfer protocol status\n", |
c41f8cbd | 377 | qtcb->prefix.prot_status); |
339f4f4e | 378 | zfcp_qdio_siosl(adapter); |
ea4a3a6a | 379 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9"); |
c41f8cbd SS |
380 | } |
381 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
382 | } |
383 | ||
c41f8cbd SS |
384 | /** |
385 | * zfcp_fsf_req_complete - process completion of a FSF request | |
386 | * @fsf_req: The FSF request that has been completed. | |
387 | * | |
388 | * When a request has been completed either from the FCP adapter, | |
389 | * or it has been dismissed due to a queue shutdown, this function | |
390 | * is called to process the completion status and trigger further | |
391 | * events related to the FSF request. | |
392 | */ | |
bd63eaf4 | 393 | static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req) |
1da177e4 | 394 | { |
c41f8cbd SS |
395 | if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) { |
396 | zfcp_fsf_status_read_handler(req); | |
397 | return; | |
398 | } | |
1da177e4 | 399 | |
c41f8cbd SS |
400 | del_timer(&req->timer); |
401 | zfcp_fsf_protstatus_eval(req); | |
402 | zfcp_fsf_fsfstatus_eval(req); | |
403 | req->handler(req); | |
1da177e4 | 404 | |
c41f8cbd | 405 | if (req->erp_action) |
287ac01a | 406 | zfcp_erp_notify(req->erp_action, 0); |
1da177e4 | 407 | |
c41f8cbd SS |
408 | if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP)) |
409 | zfcp_fsf_req_free(req); | |
410 | else | |
058b8647 | 411 | complete(&req->completion); |
c41f8cbd | 412 | } |
1da177e4 | 413 | |
bd63eaf4 SS |
414 | /** |
415 | * zfcp_fsf_req_dismiss_all - dismiss all fsf requests | |
416 | * @adapter: pointer to struct zfcp_adapter | |
417 | * | |
418 | * Never ever call this without shutting down the adapter first. | |
419 | * Otherwise the adapter would continue using and corrupting s390 storage. | |
420 | * Included BUG_ON() call to ensure this is done. | |
421 | * ERP is supposed to be the only user of this function. | |
422 | */ | |
423 | void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter) | |
424 | { | |
425 | struct zfcp_fsf_req *req, *tmp; | |
bd63eaf4 | 426 | LIST_HEAD(remove_queue); |
bd63eaf4 SS |
427 | |
428 | BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP); | |
b6bd2fb9 | 429 | zfcp_reqlist_move(adapter->req_list, &remove_queue); |
bd63eaf4 SS |
430 | |
431 | list_for_each_entry_safe(req, tmp, &remove_queue, list) { | |
432 | list_del(&req->list); | |
433 | req->status |= ZFCP_STATUS_FSFREQ_DISMISSED; | |
434 | zfcp_fsf_req_complete(req); | |
435 | } | |
436 | } | |
437 | ||
c41f8cbd SS |
438 | static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req) |
439 | { | |
9d05ce2c | 440 | struct fsf_qtcb_bottom_config *bottom = &req->qtcb->bottom.config; |
c41f8cbd SS |
441 | struct zfcp_adapter *adapter = req->adapter; |
442 | struct Scsi_Host *shost = adapter->scsi_host; | |
9d05ce2c | 443 | struct fc_els_flogi *nsp, *plogi; |
1da177e4 | 444 | |
9d05ce2c CS |
445 | /* adjust pointers for missing command code */ |
446 | nsp = (struct fc_els_flogi *) ((u8 *)&bottom->nport_serv_param | |
447 | - sizeof(u32)); | |
448 | plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload | |
449 | - sizeof(u32)); | |
1da177e4 | 450 | |
c41f8cbd SS |
451 | if (req->data) |
452 | memcpy(req->data, bottom, sizeof(*bottom)); | |
453 | ||
9d05ce2c CS |
454 | fc_host_port_name(shost) = nsp->fl_wwpn; |
455 | fc_host_node_name(shost) = nsp->fl_wwnn; | |
800c0cad | 456 | fc_host_port_id(shost) = ntoh24(bottom->s_id); |
c41f8cbd SS |
457 | fc_host_speed(shost) = bottom->fc_link_speed; |
458 | fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3; | |
459 | ||
460 | adapter->hydra_version = bottom->adapter_type; | |
faf4cd85 | 461 | adapter->timer_ticks = bottom->timer_interval & ZFCP_FSF_TIMER_INT_MASK; |
8d88cf3f CS |
462 | adapter->stat_read_buf_num = max(bottom->status_read_buf_num, |
463 | (u16)FSF_STATUS_READS_RECOM); | |
c41f8cbd SS |
464 | |
465 | if (fc_host_permanent_port_name(shost) == -1) | |
466 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
467 | ||
468 | switch (bottom->fc_topology) { | |
469 | case FSF_TOPO_P2P: | |
800c0cad | 470 | adapter->peer_d_id = ntoh24(bottom->peer_d_id); |
9d05ce2c CS |
471 | adapter->peer_wwpn = plogi->fl_wwpn; |
472 | adapter->peer_wwnn = plogi->fl_wwnn; | |
c41f8cbd | 473 | fc_host_port_type(shost) = FC_PORTTYPE_PTP; |
c41f8cbd SS |
474 | break; |
475 | case FSF_TOPO_FABRIC: | |
476 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
c41f8cbd SS |
477 | break; |
478 | case FSF_TOPO_AL: | |
479 | fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; | |
dceab655 | 480 | /* fall through */ |
c41f8cbd | 481 | default: |
c41f8cbd | 482 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
483 | "Unknown or unsupported arbitrated loop " |
484 | "fibre channel topology detected\n"); | |
ea4a3a6a | 485 | zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1"); |
c41f8cbd | 486 | return -EIO; |
1da177e4 | 487 | } |
c41f8cbd | 488 | |
ef3eb71d FB |
489 | zfcp_scsi_set_prot(adapter); |
490 | ||
1da177e4 LT |
491 | return 0; |
492 | } | |
493 | ||
c41f8cbd | 494 | static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) |
553448f6 CS |
495 | { |
496 | struct zfcp_adapter *adapter = req->adapter; | |
c41f8cbd SS |
497 | struct fsf_qtcb *qtcb = req->qtcb; |
498 | struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config; | |
499 | struct Scsi_Host *shost = adapter->scsi_host; | |
553448f6 | 500 | |
c41f8cbd SS |
501 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
502 | return; | |
1da177e4 | 503 | |
c41f8cbd SS |
504 | adapter->fsf_lic_version = bottom->lic_version; |
505 | adapter->adapter_features = bottom->adapter_features; | |
506 | adapter->connection_features = bottom->connection_features; | |
507 | adapter->peer_wwpn = 0; | |
508 | adapter->peer_wwnn = 0; | |
509 | adapter->peer_d_id = 0; | |
8a36e453 | 510 | |
c41f8cbd SS |
511 | switch (qtcb->header.fsf_status) { |
512 | case FSF_GOOD: | |
513 | if (zfcp_fsf_exchange_config_evaluate(req)) | |
514 | return; | |
1da177e4 | 515 | |
c41f8cbd SS |
516 | if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { |
517 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
518 | "FCP adapter maximum QTCB size (%d bytes) " |
519 | "is too small\n", | |
520 | bottom->max_qtcb_size); | |
ea4a3a6a | 521 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1"); |
c41f8cbd SS |
522 | return; |
523 | } | |
524 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, | |
525 | &adapter->status); | |
1da177e4 | 526 | break; |
c41f8cbd SS |
527 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
528 | fc_host_node_name(shost) = 0; | |
529 | fc_host_port_name(shost) = 0; | |
530 | fc_host_port_id(shost) = 0; | |
531 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; | |
532 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; | |
533 | adapter->hydra_version = 0; | |
1da177e4 | 534 | |
edaed859 | 535 | zfcp_fsf_link_down_info_eval(req, |
c41f8cbd | 536 | &qtcb->header.fsf_status_qual.link_down_info); |
1da177e4 | 537 | break; |
c41f8cbd | 538 | default: |
ea4a3a6a | 539 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3"); |
c41f8cbd SS |
540 | return; |
541 | } | |
1da177e4 | 542 | |
c41f8cbd SS |
543 | if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) { |
544 | adapter->hardware_version = bottom->hardware_version; | |
545 | memcpy(fc_host_serial_number(shost), bottom->serial_number, | |
546 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
547 | EBCASC(fc_host_serial_number(shost), | |
548 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
549 | } | |
1da177e4 | 550 | |
c41f8cbd SS |
551 | if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) { |
552 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
553 | "The FCP adapter only supports newer " |
554 | "control block versions\n"); | |
ea4a3a6a | 555 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4"); |
c41f8cbd SS |
556 | return; |
557 | } | |
558 | if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) { | |
559 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
560 | "The FCP adapter only supports older " |
561 | "control block versions\n"); | |
ea4a3a6a | 562 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5"); |
c41f8cbd SS |
563 | } |
564 | } | |
1da177e4 | 565 | |
c41f8cbd SS |
566 | static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req) |
567 | { | |
568 | struct zfcp_adapter *adapter = req->adapter; | |
569 | struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port; | |
570 | struct Scsi_Host *shost = adapter->scsi_host; | |
1da177e4 | 571 | |
c41f8cbd SS |
572 | if (req->data) |
573 | memcpy(req->data, bottom, sizeof(*bottom)); | |
9eb69aff | 574 | |
0282985d | 575 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) { |
c41f8cbd | 576 | fc_host_permanent_port_name(shost) = bottom->wwpn; |
0282985d CS |
577 | fc_host_port_type(shost) = FC_PORTTYPE_NPIV; |
578 | } else | |
c41f8cbd SS |
579 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); |
580 | fc_host_maxframe_size(shost) = bottom->maximum_frame_size; | |
581 | fc_host_supported_speeds(shost) = bottom->supported_speed; | |
2d8e62bb CS |
582 | memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types, |
583 | FC_FC4_LIST_SIZE); | |
584 | memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types, | |
585 | FC_FC4_LIST_SIZE); | |
c41f8cbd | 586 | } |
1da177e4 | 587 | |
c41f8cbd SS |
588 | static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) |
589 | { | |
c41f8cbd SS |
590 | struct fsf_qtcb *qtcb = req->qtcb; |
591 | ||
592 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
593 | return; | |
594 | ||
595 | switch (qtcb->header.fsf_status) { | |
596 | case FSF_GOOD: | |
597 | zfcp_fsf_exchange_port_evaluate(req); | |
c41f8cbd SS |
598 | break; |
599 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: | |
600 | zfcp_fsf_exchange_port_evaluate(req); | |
edaed859 | 601 | zfcp_fsf_link_down_info_eval(req, |
c41f8cbd | 602 | &qtcb->header.fsf_status_qual.link_down_info); |
aef4a983 | 603 | break; |
1da177e4 | 604 | } |
c41f8cbd | 605 | } |
d26ab06e | 606 | |
a4623c46 | 607 | static struct zfcp_fsf_req *zfcp_fsf_alloc(mempool_t *pool) |
c41f8cbd SS |
608 | { |
609 | struct zfcp_fsf_req *req; | |
a4623c46 SS |
610 | |
611 | if (likely(pool)) | |
612 | req = mempool_alloc(pool, GFP_ATOMIC); | |
613 | else | |
614 | req = kmalloc(sizeof(*req), GFP_ATOMIC); | |
615 | ||
616 | if (unlikely(!req)) | |
c41f8cbd | 617 | return NULL; |
a4623c46 | 618 | |
c41f8cbd | 619 | memset(req, 0, sizeof(*req)); |
88f2a977 | 620 | req->pool = pool; |
c41f8cbd SS |
621 | return req; |
622 | } | |
623 | ||
a4623c46 | 624 | static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool) |
c41f8cbd | 625 | { |
a4623c46 | 626 | struct fsf_qtcb *qtcb; |
c41f8cbd SS |
627 | |
628 | if (likely(pool)) | |
629 | qtcb = mempool_alloc(pool, GFP_ATOMIC); | |
630 | else | |
a4623c46 SS |
631 | qtcb = kmem_cache_alloc(zfcp_data.qtcb_cache, GFP_ATOMIC); |
632 | ||
c41f8cbd SS |
633 | if (unlikely(!qtcb)) |
634 | return NULL; | |
635 | ||
636 | memset(qtcb, 0, sizeof(*qtcb)); | |
a4623c46 | 637 | return qtcb; |
c41f8cbd SS |
638 | } |
639 | ||
564e1c86 | 640 | static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio, |
1674b405 CS |
641 | u32 fsf_cmd, u32 sbtype, |
642 | mempool_t *pool) | |
1da177e4 | 643 | { |
564e1c86 | 644 | struct zfcp_adapter *adapter = qdio->adapter; |
a4623c46 | 645 | struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool); |
1da177e4 | 646 | |
c41f8cbd | 647 | if (unlikely(!req)) |
1e9b1643 | 648 | return ERR_PTR(-ENOMEM); |
1da177e4 | 649 | |
c41f8cbd SS |
650 | if (adapter->req_no == 0) |
651 | adapter->req_no++; | |
1da177e4 | 652 | |
c41f8cbd SS |
653 | INIT_LIST_HEAD(&req->list); |
654 | init_timer(&req->timer); | |
058b8647 | 655 | init_completion(&req->completion); |
1da177e4 | 656 | |
c41f8cbd SS |
657 | req->adapter = adapter; |
658 | req->fsf_command = fsf_cmd; | |
52bfb558 | 659 | req->req_id = adapter->req_no; |
c41f8cbd | 660 | |
a4623c46 SS |
661 | if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) { |
662 | if (likely(pool)) | |
663 | req->qtcb = zfcp_qtcb_alloc(adapter->pool.qtcb_pool); | |
664 | else | |
665 | req->qtcb = zfcp_qtcb_alloc(NULL); | |
666 | ||
667 | if (unlikely(!req->qtcb)) { | |
668 | zfcp_fsf_req_free(req); | |
669 | return ERR_PTR(-ENOMEM); | |
670 | } | |
671 | ||
5bdecd22 | 672 | req->seq_no = adapter->fsf_req_seq_no; |
564e1c86 | 673 | req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; |
c41f8cbd SS |
674 | req->qtcb->prefix.req_id = req->req_id; |
675 | req->qtcb->prefix.ulp_info = 26; | |
676 | req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command]; | |
677 | req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION; | |
678 | req->qtcb->header.req_handle = req->req_id; | |
679 | req->qtcb->header.fsf_command = req->fsf_command; | |
c41f8cbd SS |
680 | } |
681 | ||
1674b405 CS |
682 | zfcp_qdio_req_init(adapter->qdio, &req->qdio_req, req->req_id, sbtype, |
683 | req->qtcb, sizeof(struct fsf_qtcb)); | |
684 | ||
c41f8cbd | 685 | return req; |
1da177e4 LT |
686 | } |
687 | ||
c41f8cbd SS |
688 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) |
689 | { | |
690 | struct zfcp_adapter *adapter = req->adapter; | |
564e1c86 | 691 | struct zfcp_qdio *qdio = adapter->qdio; |
b6bd2fb9 | 692 | int with_qtcb = (req->qtcb != NULL); |
e60a6d69 | 693 | int req_id = req->req_id; |
c41f8cbd | 694 | |
b6bd2fb9 | 695 | zfcp_reqlist_add(adapter->req_list, req); |
c41f8cbd | 696 | |
706eca49 | 697 | req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q_free); |
c41f8cbd | 698 | req->issued = get_clock(); |
34c2b712 | 699 | if (zfcp_qdio_send(qdio, &req->qdio_req)) { |
c41f8cbd | 700 | del_timer(&req->timer); |
3765138a | 701 | /* lookup request again, list might have changed */ |
b6bd2fb9 | 702 | zfcp_reqlist_find_rm(adapter->req_list, req_id); |
ea4a3a6a | 703 | zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1"); |
c41f8cbd SS |
704 | return -EIO; |
705 | } | |
706 | ||
707 | /* Don't increase for unsolicited status */ | |
135ea137 | 708 | if (with_qtcb) |
c41f8cbd | 709 | adapter->fsf_req_seq_no++; |
52bfb558 | 710 | adapter->req_no++; |
c41f8cbd SS |
711 | |
712 | return 0; | |
713 | } | |
714 | ||
715 | /** | |
716 | * zfcp_fsf_status_read - send status read request | |
717 | * @adapter: pointer to struct zfcp_adapter | |
718 | * @req_flags: request flags | |
719 | * Returns: 0 on success, ERROR otherwise | |
1da177e4 | 720 | */ |
564e1c86 | 721 | int zfcp_fsf_status_read(struct zfcp_qdio *qdio) |
1da177e4 | 722 | { |
564e1c86 | 723 | struct zfcp_adapter *adapter = qdio->adapter; |
c41f8cbd SS |
724 | struct zfcp_fsf_req *req; |
725 | struct fsf_status_read_buffer *sr_buf; | |
c41f8cbd | 726 | int retval = -EIO; |
1da177e4 | 727 | |
44a24cb3 | 728 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 729 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd SS |
730 | goto out; |
731 | ||
1674b405 | 732 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS, 0, |
a4623c46 | 733 | adapter->pool.status_read_req); |
025270f0 | 734 | if (IS_ERR(req)) { |
c41f8cbd SS |
735 | retval = PTR_ERR(req); |
736 | goto out; | |
1da177e4 LT |
737 | } |
738 | ||
a4623c46 | 739 | sr_buf = mempool_alloc(adapter->pool.status_read_data, GFP_ATOMIC); |
c41f8cbd SS |
740 | if (!sr_buf) { |
741 | retval = -ENOMEM; | |
742 | goto failed_buf; | |
743 | } | |
744 | memset(sr_buf, 0, sizeof(*sr_buf)); | |
745 | req->data = sr_buf; | |
1674b405 CS |
746 | |
747 | zfcp_qdio_fill_next(qdio, &req->qdio_req, sr_buf, sizeof(*sr_buf)); | |
748 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); | |
059c97d0 | 749 | |
c41f8cbd SS |
750 | retval = zfcp_fsf_req_send(req); |
751 | if (retval) | |
752 | goto failed_req_send; | |
1da177e4 | 753 | |
c41f8cbd SS |
754 | goto out; |
755 | ||
756 | failed_req_send: | |
a54ca0f6 | 757 | req->data = NULL; |
a4623c46 | 758 | mempool_free(sr_buf, adapter->pool.status_read_data); |
c41f8cbd | 759 | failed_buf: |
a54ca0f6 | 760 | zfcp_dbf_hba_fsf_uss("fssr__1", req); |
c41f8cbd | 761 | zfcp_fsf_req_free(req); |
c41f8cbd | 762 | out: |
44a24cb3 | 763 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd SS |
764 | return retval; |
765 | } | |
766 | ||
767 | static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req) | |
768 | { | |
b62a8d9b CS |
769 | struct scsi_device *sdev = req->data; |
770 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); | |
c41f8cbd SS |
771 | union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual; |
772 | ||
773 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
774 | return; | |
775 | ||
776 | switch (req->qtcb->header.fsf_status) { | |
1da177e4 | 777 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd | 778 | if (fsq->word[0] == fsq->word[1]) { |
b62a8d9b | 779 | zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, |
ea4a3a6a | 780 | "fsafch1"); |
c41f8cbd | 781 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
782 | } |
783 | break; | |
1da177e4 | 784 | case FSF_LUN_HANDLE_NOT_VALID: |
c41f8cbd | 785 | if (fsq->word[0] == fsq->word[1]) { |
ea4a3a6a | 786 | zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fsafch2"); |
c41f8cbd | 787 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
788 | } |
789 | break; | |
1da177e4 | 790 | case FSF_FCP_COMMAND_DOES_NOT_EXIST: |
c41f8cbd | 791 | req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED; |
1da177e4 | 792 | break; |
1da177e4 | 793 | case FSF_PORT_BOXED: |
edaed859 SS |
794 | zfcp_erp_set_port_status(zfcp_sdev->port, |
795 | ZFCP_STATUS_COMMON_ACCESS_BOXED); | |
796 | zfcp_erp_port_reopen(zfcp_sdev->port, | |
ea4a3a6a | 797 | ZFCP_STATUS_COMMON_ERP_FAILED, "fsafch3"); |
4c571c65 | 798 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 799 | break; |
1da177e4 | 800 | case FSF_LUN_BOXED: |
edaed859 SS |
801 | zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED); |
802 | zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, | |
ea4a3a6a | 803 | "fsafch4"); |
4c571c65 | 804 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 805 | break; |
1da177e4 | 806 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 807 | switch (fsq->word[0]) { |
1da177e4 | 808 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
b62a8d9b | 809 | zfcp_fc_test_link(zfcp_sdev->port); |
dceab655 | 810 | /* fall through */ |
1da177e4 | 811 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 812 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 813 | break; |
1da177e4 LT |
814 | } |
815 | break; | |
1da177e4 | 816 | case FSF_GOOD: |
c41f8cbd | 817 | req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED; |
1da177e4 | 818 | break; |
1da177e4 | 819 | } |
1da177e4 LT |
820 | } |
821 | ||
822 | /** | |
b62a8d9b CS |
823 | * zfcp_fsf_abort_fcp_cmnd - abort running SCSI command |
824 | * @scmnd: The SCSI command to abort | |
c41f8cbd | 825 | * Returns: pointer to struct zfcp_fsf_req |
1da177e4 | 826 | */ |
1da177e4 | 827 | |
b62a8d9b | 828 | struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *scmnd) |
1da177e4 | 829 | { |
c41f8cbd | 830 | struct zfcp_fsf_req *req = NULL; |
b62a8d9b CS |
831 | struct scsi_device *sdev = scmnd->device; |
832 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); | |
833 | struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio; | |
834 | unsigned long old_req_id = (unsigned long) scmnd->host_scribble; | |
8a36e453 | 835 | |
44a24cb3 | 836 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 837 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 838 | goto out; |
564e1c86 | 839 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND, |
1674b405 | 840 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 841 | qdio->adapter->pool.scsi_abort); |
633528c3 SS |
842 | if (IS_ERR(req)) { |
843 | req = NULL; | |
c41f8cbd | 844 | goto out; |
633528c3 | 845 | } |
2abbe866 | 846 | |
b62a8d9b | 847 | if (unlikely(!(atomic_read(&zfcp_sdev->status) & |
c41f8cbd SS |
848 | ZFCP_STATUS_COMMON_UNBLOCKED))) |
849 | goto out_error_free; | |
1da177e4 | 850 | |
1674b405 | 851 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 852 | |
6fbf25e8 | 853 | req->data = sdev; |
c41f8cbd | 854 | req->handler = zfcp_fsf_abort_fcp_command_handler; |
b62a8d9b CS |
855 | req->qtcb->header.lun_handle = zfcp_sdev->lun_handle; |
856 | req->qtcb->header.port_handle = zfcp_sdev->port->handle; | |
c41f8cbd SS |
857 | req->qtcb->bottom.support.req_handle = (u64) old_req_id; |
858 | ||
859 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); | |
860 | if (!zfcp_fsf_req_send(req)) | |
861 | goto out; | |
862 | ||
863 | out_error_free: | |
864 | zfcp_fsf_req_free(req); | |
865 | req = NULL; | |
866 | out: | |
44a24cb3 | 867 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd | 868 | return req; |
1da177e4 LT |
869 | } |
870 | ||
c41f8cbd | 871 | static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) |
1da177e4 | 872 | { |
c41f8cbd | 873 | struct zfcp_adapter *adapter = req->adapter; |
7c7dc196 | 874 | struct zfcp_fsf_ct_els *ct = req->data; |
c41f8cbd | 875 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1da177e4 | 876 | |
7c7dc196 | 877 | ct->status = -EINVAL; |
1da177e4 | 878 | |
c41f8cbd | 879 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
880 | goto skip_fsfstatus; |
881 | ||
1da177e4 | 882 | switch (header->fsf_status) { |
1da177e4 | 883 | case FSF_GOOD: |
2c55b750 | 884 | zfcp_dbf_san_res("fsscth1", req); |
7c7dc196 | 885 | ct->status = 0; |
1da177e4 | 886 | break; |
1da177e4 | 887 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 888 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 889 | break; |
1da177e4 | 890 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
891 | switch (header->fsf_status_qual.word[0]){ |
892 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 893 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 894 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 895 | break; |
1da177e4 LT |
896 | } |
897 | break; | |
1da177e4 | 898 | case FSF_ACCESS_DENIED: |
1da177e4 | 899 | break; |
1da177e4 | 900 | case FSF_PORT_BOXED: |
4c571c65 | 901 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 902 | break; |
c41f8cbd | 903 | case FSF_PORT_HANDLE_NOT_VALID: |
ea4a3a6a | 904 | zfcp_erp_adapter_reopen(adapter, 0, "fsscth1"); |
dceab655 | 905 | /* fall through */ |
c41f8cbd | 906 | case FSF_GENERIC_COMMAND_REJECTED: |
1da177e4 | 907 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 908 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 909 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 910 | case FSF_SBAL_MISMATCH: |
c41f8cbd | 911 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
912 | break; |
913 | } | |
914 | ||
915 | skip_fsfstatus: | |
7c7dc196 CS |
916 | if (ct->handler) |
917 | ct->handler(ct->handler_data); | |
c41f8cbd | 918 | } |
1da177e4 | 919 | |
1674b405 CS |
920 | static void zfcp_fsf_setup_ct_els_unchained(struct zfcp_qdio *qdio, |
921 | struct zfcp_qdio_req *q_req, | |
426f6059 CS |
922 | struct scatterlist *sg_req, |
923 | struct scatterlist *sg_resp) | |
924 | { | |
1674b405 CS |
925 | zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_req), sg_req->length); |
926 | zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_resp), sg_resp->length); | |
927 | zfcp_qdio_set_sbale_last(qdio, q_req); | |
426f6059 CS |
928 | } |
929 | ||
39eb7e9a CS |
930 | static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req, |
931 | struct scatterlist *sg_req, | |
01b04759 | 932 | struct scatterlist *sg_resp) |
c41f8cbd | 933 | { |
42428f74 | 934 | struct zfcp_adapter *adapter = req->adapter; |
42428f74 | 935 | u32 feat = adapter->adapter_features; |
c41f8cbd SS |
936 | int bytes; |
937 | ||
39eb7e9a | 938 | if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) { |
1674b405 CS |
939 | if (!zfcp_qdio_sg_one_sbale(sg_req) || |
940 | !zfcp_qdio_sg_one_sbale(sg_resp)) | |
39eb7e9a CS |
941 | return -EOPNOTSUPP; |
942 | ||
1674b405 CS |
943 | zfcp_fsf_setup_ct_els_unchained(adapter->qdio, &req->qdio_req, |
944 | sg_req, sg_resp); | |
426f6059 CS |
945 | return 0; |
946 | } | |
947 | ||
948 | /* use single, unchained SBAL if it can hold the request */ | |
30b6777b | 949 | if (zfcp_qdio_sg_one_sbale(sg_req) && zfcp_qdio_sg_one_sbale(sg_resp)) { |
1674b405 CS |
950 | zfcp_fsf_setup_ct_els_unchained(adapter->qdio, &req->qdio_req, |
951 | sg_req, sg_resp); | |
39eb7e9a CS |
952 | return 0; |
953 | } | |
954 | ||
01b04759 | 955 | bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req, sg_req); |
c41f8cbd | 956 | if (bytes <= 0) |
9072df4d | 957 | return -EIO; |
ef3eb71d | 958 | zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req); |
c41f8cbd | 959 | req->qtcb->bottom.support.req_buf_length = bytes; |
1674b405 | 960 | zfcp_qdio_skip_to_last_sbale(&req->qdio_req); |
c41f8cbd | 961 | |
34c2b712 | 962 | bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req, |
01b04759 | 963 | sg_resp); |
b1a58985 | 964 | req->qtcb->bottom.support.resp_buf_length = bytes; |
c41f8cbd | 965 | if (bytes <= 0) |
9072df4d | 966 | return -EIO; |
ef3eb71d | 967 | zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req); |
98fc4d5c | 968 | |
b1a58985 CS |
969 | return 0; |
970 | } | |
971 | ||
972 | static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req, | |
973 | struct scatterlist *sg_req, | |
974 | struct scatterlist *sg_resp, | |
01b04759 | 975 | unsigned int timeout) |
b1a58985 CS |
976 | { |
977 | int ret; | |
978 | ||
01b04759 | 979 | ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp); |
b1a58985 CS |
980 | if (ret) |
981 | return ret; | |
982 | ||
98fc4d5c | 983 | /* common settings for ct/gs and els requests */ |
51375ee8 SS |
984 | if (timeout > 255) |
985 | timeout = 255; /* max value accepted by hardware */ | |
98fc4d5c | 986 | req->qtcb->bottom.support.service_class = FSF_CLASS_3; |
51375ee8 SS |
987 | req->qtcb->bottom.support.timeout = timeout; |
988 | zfcp_fsf_start_timer(req, (timeout + 10) * HZ); | |
c41f8cbd SS |
989 | |
990 | return 0; | |
1da177e4 LT |
991 | } |
992 | ||
993 | /** | |
c41f8cbd SS |
994 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) |
995 | * @ct: pointer to struct zfcp_send_ct with data for request | |
996 | * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req | |
1da177e4 | 997 | */ |
7c7dc196 | 998 | int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port, |
51375ee8 SS |
999 | struct zfcp_fsf_ct_els *ct, mempool_t *pool, |
1000 | unsigned int timeout) | |
1da177e4 | 1001 | { |
564e1c86 | 1002 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
c41f8cbd SS |
1003 | struct zfcp_fsf_req *req; |
1004 | int ret = -EIO; | |
1da177e4 | 1005 | |
44a24cb3 | 1006 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1007 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1008 | goto out; |
1da177e4 | 1009 | |
1674b405 CS |
1010 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC, |
1011 | SBAL_FLAGS0_TYPE_WRITE_READ, pool); | |
09a46c6e | 1012 | |
025270f0 | 1013 | if (IS_ERR(req)) { |
c41f8cbd SS |
1014 | ret = PTR_ERR(req); |
1015 | goto out; | |
3f0ca62a CS |
1016 | } |
1017 | ||
09a46c6e | 1018 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
01b04759 | 1019 | ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp, timeout); |
553448f6 | 1020 | if (ret) |
1da177e4 | 1021 | goto failed_send; |
1da177e4 | 1022 | |
c41f8cbd | 1023 | req->handler = zfcp_fsf_send_ct_handler; |
5ab944f9 | 1024 | req->qtcb->header.port_handle = wka_port->handle; |
c41f8cbd SS |
1025 | req->data = ct; |
1026 | ||
2c55b750 | 1027 | zfcp_dbf_san_req("fssct_1", req, wka_port->d_id); |
1da177e4 | 1028 | |
c41f8cbd SS |
1029 | ret = zfcp_fsf_req_send(req); |
1030 | if (ret) | |
1031 | goto failed_send; | |
1da177e4 | 1032 | |
c41f8cbd | 1033 | goto out; |
1da177e4 | 1034 | |
c41f8cbd SS |
1035 | failed_send: |
1036 | zfcp_fsf_req_free(req); | |
c41f8cbd | 1037 | out: |
44a24cb3 | 1038 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd | 1039 | return ret; |
1da177e4 LT |
1040 | } |
1041 | ||
c41f8cbd | 1042 | static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1043 | { |
7c7dc196 | 1044 | struct zfcp_fsf_ct_els *send_els = req->data; |
c41f8cbd SS |
1045 | struct zfcp_port *port = send_els->port; |
1046 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1047 | |
c41f8cbd | 1048 | send_els->status = -EINVAL; |
1da177e4 | 1049 | |
c41f8cbd | 1050 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
1051 | goto skip_fsfstatus; |
1052 | ||
1053 | switch (header->fsf_status) { | |
1da177e4 | 1054 | case FSF_GOOD: |
2c55b750 | 1055 | zfcp_dbf_san_res("fsselh1", req); |
c41f8cbd | 1056 | send_els->status = 0; |
1da177e4 | 1057 | break; |
1da177e4 | 1058 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 1059 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 1060 | break; |
1da177e4 | 1061 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1062 | switch (header->fsf_status_qual.word[0]){ |
1063 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1064 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1065 | case FSF_SQ_RETRY_IF_POSSIBLE: |
c41f8cbd | 1066 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1067 | break; |
1da177e4 LT |
1068 | } |
1069 | break; | |
1da177e4 | 1070 | case FSF_ELS_COMMAND_REJECTED: |
1da177e4 | 1071 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1072 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1073 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1074 | break; |
1da177e4 | 1075 | case FSF_ACCESS_DENIED: |
a1ca4831 CS |
1076 | if (port) { |
1077 | zfcp_cfdc_port_denied(port, &header->fsf_status_qual); | |
1078 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1079 | } | |
1da177e4 | 1080 | break; |
c41f8cbd SS |
1081 | case FSF_SBAL_MISMATCH: |
1082 | /* should never occure, avoided in zfcp_fsf_send_els */ | |
1083 | /* fall through */ | |
1da177e4 | 1084 | default: |
c41f8cbd | 1085 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1086 | break; |
1087 | } | |
1da177e4 | 1088 | skip_fsfstatus: |
aa551daf | 1089 | if (send_els->handler) |
1da177e4 | 1090 | send_els->handler(send_els->handler_data); |
c41f8cbd | 1091 | } |
1da177e4 | 1092 | |
c41f8cbd SS |
1093 | /** |
1094 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) | |
1095 | * @els: pointer to struct zfcp_send_els with data for the command | |
1096 | */ | |
7c7dc196 | 1097 | int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id, |
51375ee8 | 1098 | struct zfcp_fsf_ct_els *els, unsigned int timeout) |
c41f8cbd SS |
1099 | { |
1100 | struct zfcp_fsf_req *req; | |
7c7dc196 | 1101 | struct zfcp_qdio *qdio = adapter->qdio; |
c41f8cbd SS |
1102 | int ret = -EIO; |
1103 | ||
44a24cb3 | 1104 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1105 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1106 | goto out; |
09a46c6e | 1107 | |
1674b405 CS |
1108 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS, |
1109 | SBAL_FLAGS0_TYPE_WRITE_READ, NULL); | |
09a46c6e | 1110 | |
025270f0 | 1111 | if (IS_ERR(req)) { |
c41f8cbd SS |
1112 | ret = PTR_ERR(req); |
1113 | goto out; | |
1114 | } | |
1115 | ||
09a46c6e | 1116 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
01b04759 SS |
1117 | |
1118 | zfcp_qdio_sbal_limit(qdio, &req->qdio_req, 2); | |
1119 | ||
1120 | ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, timeout); | |
44cc76f2 | 1121 | |
c41f8cbd SS |
1122 | if (ret) |
1123 | goto failed_send; | |
1124 | ||
7c7dc196 | 1125 | hton24(req->qtcb->bottom.support.d_id, d_id); |
c41f8cbd | 1126 | req->handler = zfcp_fsf_send_els_handler; |
c41f8cbd SS |
1127 | req->data = els; |
1128 | ||
2c55b750 | 1129 | zfcp_dbf_san_req("fssels1", req, d_id); |
c41f8cbd | 1130 | |
c41f8cbd SS |
1131 | ret = zfcp_fsf_req_send(req); |
1132 | if (ret) | |
1133 | goto failed_send; | |
1134 | ||
1135 | goto out; | |
1136 | ||
1137 | failed_send: | |
1138 | zfcp_fsf_req_free(req); | |
1139 | out: | |
44a24cb3 | 1140 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd | 1141 | return ret; |
1da177e4 LT |
1142 | } |
1143 | ||
c41f8cbd | 1144 | int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1145 | { |
c41f8cbd | 1146 | struct zfcp_fsf_req *req; |
564e1c86 | 1147 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1148 | int retval = -EIO; |
1149 | ||
44a24cb3 | 1150 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1151 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1152 | goto out; |
09a46c6e | 1153 | |
564e1c86 | 1154 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, |
1674b405 | 1155 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1156 | qdio->adapter->pool.erp_req); |
09a46c6e | 1157 | |
025270f0 | 1158 | if (IS_ERR(req)) { |
c41f8cbd SS |
1159 | retval = PTR_ERR(req); |
1160 | goto out; | |
1da177e4 LT |
1161 | } |
1162 | ||
09a46c6e | 1163 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1164 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1165 | |
c41f8cbd | 1166 | req->qtcb->bottom.config.feature_selection = |
aef4a983 MS |
1167 | FSF_FEATURE_CFDC | |
1168 | FSF_FEATURE_LUN_SHARING | | |
9eb69aff | 1169 | FSF_FEATURE_NOTIFICATION_LOST | |
aef4a983 | 1170 | FSF_FEATURE_UPDATE_ALERT; |
c41f8cbd SS |
1171 | req->erp_action = erp_action; |
1172 | req->handler = zfcp_fsf_exchange_config_data_handler; | |
e60a6d69 | 1173 | erp_action->fsf_req_id = req->req_id; |
1da177e4 | 1174 | |
287ac01a | 1175 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1176 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1177 | if (retval) { |
c41f8cbd | 1178 | zfcp_fsf_req_free(req); |
e60a6d69 | 1179 | erp_action->fsf_req_id = 0; |
1da177e4 | 1180 | } |
c41f8cbd | 1181 | out: |
44a24cb3 | 1182 | spin_unlock_irq(&qdio->req_q_lock); |
52ef11a7 SS |
1183 | return retval; |
1184 | } | |
1da177e4 | 1185 | |
564e1c86 | 1186 | int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio, |
c41f8cbd | 1187 | struct fsf_qtcb_bottom_config *data) |
52ef11a7 | 1188 | { |
c41f8cbd SS |
1189 | struct zfcp_fsf_req *req = NULL; |
1190 | int retval = -EIO; | |
1191 | ||
44a24cb3 | 1192 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1193 | if (zfcp_qdio_sbal_get(qdio)) |
ada81b74 | 1194 | goto out_unlock; |
c41f8cbd | 1195 | |
1674b405 CS |
1196 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, |
1197 | SBAL_FLAGS0_TYPE_READ, NULL); | |
09a46c6e | 1198 | |
025270f0 | 1199 | if (IS_ERR(req)) { |
c41f8cbd | 1200 | retval = PTR_ERR(req); |
ada81b74 | 1201 | goto out_unlock; |
52ef11a7 SS |
1202 | } |
1203 | ||
1674b405 | 1204 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
c41f8cbd | 1205 | req->handler = zfcp_fsf_exchange_config_data_handler; |
52ef11a7 | 1206 | |
c41f8cbd | 1207 | req->qtcb->bottom.config.feature_selection = |
52ef11a7 SS |
1208 | FSF_FEATURE_CFDC | |
1209 | FSF_FEATURE_LUN_SHARING | | |
1210 | FSF_FEATURE_NOTIFICATION_LOST | | |
1211 | FSF_FEATURE_UPDATE_ALERT; | |
1212 | ||
1213 | if (data) | |
c41f8cbd | 1214 | req->data = data; |
52ef11a7 | 1215 | |
c41f8cbd SS |
1216 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
1217 | retval = zfcp_fsf_req_send(req); | |
44a24cb3 | 1218 | spin_unlock_irq(&qdio->req_q_lock); |
553448f6 | 1219 | if (!retval) |
058b8647 | 1220 | wait_for_completion(&req->completion); |
52ef11a7 | 1221 | |
c41f8cbd | 1222 | zfcp_fsf_req_free(req); |
ada81b74 | 1223 | return retval; |
52ef11a7 | 1224 | |
ada81b74 | 1225 | out_unlock: |
44a24cb3 | 1226 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1227 | return retval; |
1228 | } | |
1229 | ||
1da177e4 LT |
1230 | /** |
1231 | * zfcp_fsf_exchange_port_data - request information about local port | |
aef4a983 | 1232 | * @erp_action: ERP action for the adapter for which port data is requested |
c41f8cbd | 1233 | * Returns: 0 on success, error otherwise |
1da177e4 | 1234 | */ |
c41f8cbd | 1235 | int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1236 | { |
564e1c86 | 1237 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd | 1238 | struct zfcp_fsf_req *req; |
c41f8cbd | 1239 | int retval = -EIO; |
1da177e4 | 1240 | |
564e1c86 | 1241 | if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1242 | return -EOPNOTSUPP; |
1da177e4 | 1243 | |
44a24cb3 | 1244 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1245 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1246 | goto out; |
09a46c6e | 1247 | |
564e1c86 | 1248 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, |
1674b405 | 1249 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1250 | qdio->adapter->pool.erp_req); |
09a46c6e | 1251 | |
025270f0 | 1252 | if (IS_ERR(req)) { |
c41f8cbd SS |
1253 | retval = PTR_ERR(req); |
1254 | goto out; | |
aef4a983 MS |
1255 | } |
1256 | ||
09a46c6e | 1257 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1258 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1259 | |
c41f8cbd SS |
1260 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1261 | req->erp_action = erp_action; | |
e60a6d69 | 1262 | erp_action->fsf_req_id = req->req_id; |
52ef11a7 | 1263 | |
287ac01a | 1264 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1265 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1266 | if (retval) { |
c41f8cbd | 1267 | zfcp_fsf_req_free(req); |
e60a6d69 | 1268 | erp_action->fsf_req_id = 0; |
52ef11a7 | 1269 | } |
c41f8cbd | 1270 | out: |
44a24cb3 | 1271 | spin_unlock_irq(&qdio->req_q_lock); |
52ef11a7 SS |
1272 | return retval; |
1273 | } | |
1274 | ||
52ef11a7 SS |
1275 | /** |
1276 | * zfcp_fsf_exchange_port_data_sync - request information about local port | |
564e1c86 | 1277 | * @qdio: pointer to struct zfcp_qdio |
c41f8cbd SS |
1278 | * @data: pointer to struct fsf_qtcb_bottom_port |
1279 | * Returns: 0 on success, error otherwise | |
52ef11a7 | 1280 | */ |
564e1c86 | 1281 | int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio, |
c41f8cbd | 1282 | struct fsf_qtcb_bottom_port *data) |
52ef11a7 | 1283 | { |
c41f8cbd SS |
1284 | struct zfcp_fsf_req *req = NULL; |
1285 | int retval = -EIO; | |
52ef11a7 | 1286 | |
564e1c86 | 1287 | if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1288 | return -EOPNOTSUPP; |
52ef11a7 | 1289 | |
44a24cb3 | 1290 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1291 | if (zfcp_qdio_sbal_get(qdio)) |
ada81b74 | 1292 | goto out_unlock; |
c41f8cbd | 1293 | |
1674b405 CS |
1294 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, |
1295 | SBAL_FLAGS0_TYPE_READ, NULL); | |
09a46c6e | 1296 | |
025270f0 | 1297 | if (IS_ERR(req)) { |
c41f8cbd | 1298 | retval = PTR_ERR(req); |
ada81b74 | 1299 | goto out_unlock; |
1da177e4 LT |
1300 | } |
1301 | ||
52ef11a7 | 1302 | if (data) |
c41f8cbd | 1303 | req->data = data; |
52ef11a7 | 1304 | |
1674b405 | 1305 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
52ef11a7 | 1306 | |
c41f8cbd SS |
1307 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1308 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1309 | retval = zfcp_fsf_req_send(req); | |
44a24cb3 | 1310 | spin_unlock_irq(&qdio->req_q_lock); |
ada81b74 | 1311 | |
553448f6 | 1312 | if (!retval) |
058b8647 SS |
1313 | wait_for_completion(&req->completion); |
1314 | ||
c41f8cbd | 1315 | zfcp_fsf_req_free(req); |
1da177e4 | 1316 | |
1da177e4 | 1317 | return retval; |
ada81b74 CS |
1318 | |
1319 | out_unlock: | |
44a24cb3 | 1320 | spin_unlock_irq(&qdio->req_q_lock); |
ada81b74 | 1321 | return retval; |
1da177e4 LT |
1322 | } |
1323 | ||
c41f8cbd | 1324 | static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1325 | { |
c41f8cbd SS |
1326 | struct zfcp_port *port = req->data; |
1327 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
9d05ce2c | 1328 | struct fc_els_flogi *plogi; |
1da177e4 | 1329 | |
c41f8cbd | 1330 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
a17c5855 | 1331 | goto out; |
1da177e4 | 1332 | |
1da177e4 | 1333 | switch (header->fsf_status) { |
1da177e4 | 1334 | case FSF_PORT_ALREADY_OPEN: |
1da177e4 | 1335 | break; |
1da177e4 | 1336 | case FSF_ACCESS_DENIED: |
a1ca4831 CS |
1337 | zfcp_cfdc_port_denied(port, &header->fsf_status_qual); |
1338 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1339 | break; |
1da177e4 | 1340 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: |
c41f8cbd | 1341 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 1342 | "Not enough FCP adapter resources to open " |
7ba58c9c SS |
1343 | "remote port 0x%016Lx\n", |
1344 | (unsigned long long)port->wwpn); | |
edaed859 SS |
1345 | zfcp_erp_set_port_status(port, |
1346 | ZFCP_STATUS_COMMON_ERP_FAILED); | |
c41f8cbd | 1347 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1348 | break; |
1da177e4 | 1349 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1350 | switch (header->fsf_status_qual.word[0]) { |
1351 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1352 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1353 | case FSF_SQ_NO_RETRY_POSSIBLE: |
c41f8cbd | 1354 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1355 | break; |
1356 | } | |
1357 | break; | |
1da177e4 | 1358 | case FSF_GOOD: |
1da177e4 | 1359 | port->handle = header->port_handle; |
1da177e4 LT |
1360 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN | |
1361 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
d736a27b AH |
1362 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
1363 | ZFCP_STATUS_COMMON_ACCESS_BOXED, | |
1364 | &port->status); | |
1da177e4 LT |
1365 | /* check whether D_ID has changed during open */ |
1366 | /* | |
1367 | * FIXME: This check is not airtight, as the FCP channel does | |
1368 | * not monitor closures of target port connections caused on | |
1369 | * the remote side. Thus, they might miss out on invalidating | |
1370 | * locally cached WWPNs (and other N_Port parameters) of gone | |
1371 | * target ports. So, our heroic attempt to make things safe | |
1372 | * could be undermined by 'open port' response data tagged with | |
1373 | * obsolete WWPNs. Another reason to monitor potential | |
1374 | * connection closures ourself at least (by interpreting | |
1375 | * incoming ELS' and unsolicited status). It just crosses my | |
1376 | * mind that one should be able to cross-check by means of | |
1377 | * another GID_PN straight after a port has been opened. | |
1378 | * Alternately, an ADISC/PDISC ELS should suffice, as well. | |
1379 | */ | |
9d05ce2c | 1380 | plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els; |
39eb7e9a | 1381 | if (req->qtcb->bottom.support.els1_length >= |
9d05ce2c | 1382 | FSF_PLOGI_MIN_LEN) |
c41f8cbd | 1383 | zfcp_fc_plogi_evaluate(port, plogi); |
1da177e4 | 1384 | break; |
1da177e4 | 1385 | case FSF_UNKNOWN_OP_SUBTYPE: |
c41f8cbd | 1386 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1387 | break; |
1388 | } | |
a17c5855 MP |
1389 | |
1390 | out: | |
615f59e0 | 1391 | put_device(&port->dev); |
1da177e4 LT |
1392 | } |
1393 | ||
c41f8cbd SS |
1394 | /** |
1395 | * zfcp_fsf_open_port - create and send open port request | |
1396 | * @erp_action: pointer to struct zfcp_erp_action | |
1397 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1398 | */ |
c41f8cbd | 1399 | int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1400 | { |
564e1c86 | 1401 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
a17c5855 | 1402 | struct zfcp_port *port = erp_action->port; |
564e1c86 | 1403 | struct zfcp_fsf_req *req; |
c41f8cbd SS |
1404 | int retval = -EIO; |
1405 | ||
44a24cb3 | 1406 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1407 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd SS |
1408 | goto out; |
1409 | ||
564e1c86 | 1410 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID, |
1674b405 | 1411 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1412 | qdio->adapter->pool.erp_req); |
09a46c6e | 1413 | |
025270f0 | 1414 | if (IS_ERR(req)) { |
c41f8cbd | 1415 | retval = PTR_ERR(req); |
1da177e4 | 1416 | goto out; |
c41f8cbd | 1417 | } |
1da177e4 | 1418 | |
09a46c6e | 1419 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1420 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1421 | |
c41f8cbd | 1422 | req->handler = zfcp_fsf_open_port_handler; |
800c0cad | 1423 | hton24(req->qtcb->bottom.support.d_id, port->d_id); |
a17c5855 | 1424 | req->data = port; |
c41f8cbd | 1425 | req->erp_action = erp_action; |
e60a6d69 | 1426 | erp_action->fsf_req_id = req->req_id; |
615f59e0 | 1427 | get_device(&port->dev); |
c41f8cbd | 1428 | |
287ac01a | 1429 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1430 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1431 | if (retval) { |
c41f8cbd | 1432 | zfcp_fsf_req_free(req); |
e60a6d69 | 1433 | erp_action->fsf_req_id = 0; |
615f59e0 | 1434 | put_device(&port->dev); |
1da177e4 | 1435 | } |
c41f8cbd | 1436 | out: |
44a24cb3 | 1437 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1438 | return retval; |
1439 | } | |
1440 | ||
c41f8cbd | 1441 | static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1442 | { |
c41f8cbd | 1443 | struct zfcp_port *port = req->data; |
1da177e4 | 1444 | |
c41f8cbd | 1445 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1446 | return; |
1da177e4 | 1447 | |
c41f8cbd | 1448 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1449 | case FSF_PORT_HANDLE_NOT_VALID: |
ea4a3a6a | 1450 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1"); |
c41f8cbd | 1451 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1452 | break; |
1da177e4 | 1453 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 | 1454 | break; |
1da177e4 | 1455 | case FSF_GOOD: |
edaed859 | 1456 | zfcp_erp_clear_port_status(port, ZFCP_STATUS_COMMON_OPEN); |
1da177e4 | 1457 | break; |
1da177e4 | 1458 | } |
1da177e4 LT |
1459 | } |
1460 | ||
c41f8cbd SS |
1461 | /** |
1462 | * zfcp_fsf_close_port - create and send close port request | |
1463 | * @erp_action: pointer to struct zfcp_erp_action | |
1464 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1465 | */ |
c41f8cbd | 1466 | int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1467 | { |
564e1c86 | 1468 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1469 | struct zfcp_fsf_req *req; |
1470 | int retval = -EIO; | |
1471 | ||
44a24cb3 | 1472 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1473 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd SS |
1474 | goto out; |
1475 | ||
564e1c86 | 1476 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT, |
1674b405 | 1477 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1478 | qdio->adapter->pool.erp_req); |
09a46c6e | 1479 | |
025270f0 | 1480 | if (IS_ERR(req)) { |
c41f8cbd | 1481 | retval = PTR_ERR(req); |
1da177e4 | 1482 | goto out; |
c41f8cbd | 1483 | } |
1da177e4 | 1484 | |
09a46c6e | 1485 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1486 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1487 | |
c41f8cbd SS |
1488 | req->handler = zfcp_fsf_close_port_handler; |
1489 | req->data = erp_action->port; | |
1490 | req->erp_action = erp_action; | |
1491 | req->qtcb->header.port_handle = erp_action->port->handle; | |
e60a6d69 | 1492 | erp_action->fsf_req_id = req->req_id; |
c41f8cbd | 1493 | |
287ac01a | 1494 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1495 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1496 | if (retval) { |
c41f8cbd | 1497 | zfcp_fsf_req_free(req); |
e60a6d69 | 1498 | erp_action->fsf_req_id = 0; |
1da177e4 | 1499 | } |
c41f8cbd | 1500 | out: |
44a24cb3 | 1501 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1502 | return retval; |
1503 | } | |
1504 | ||
5ab944f9 SS |
1505 | static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req) |
1506 | { | |
bd0072ec | 1507 | struct zfcp_fc_wka_port *wka_port = req->data; |
5ab944f9 SS |
1508 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1509 | ||
1510 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
bd0072ec | 1511 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 SS |
1512 | goto out; |
1513 | } | |
1514 | ||
1515 | switch (header->fsf_status) { | |
1516 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: | |
1517 | dev_warn(&req->adapter->ccw_device->dev, | |
1518 | "Opening WKA port 0x%x failed\n", wka_port->d_id); | |
dceab655 | 1519 | /* fall through */ |
5ab944f9 SS |
1520 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1521 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
dceab655 | 1522 | /* fall through */ |
5ab944f9 | 1523 | case FSF_ACCESS_DENIED: |
bd0072ec | 1524 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 | 1525 | break; |
5ab944f9 SS |
1526 | case FSF_GOOD: |
1527 | wka_port->handle = header->port_handle; | |
27f492cc SS |
1528 | /* fall through */ |
1529 | case FSF_PORT_ALREADY_OPEN: | |
bd0072ec | 1530 | wka_port->status = ZFCP_FC_WKA_PORT_ONLINE; |
5ab944f9 SS |
1531 | } |
1532 | out: | |
1533 | wake_up(&wka_port->completion_wq); | |
1534 | } | |
1535 | ||
1536 | /** | |
1537 | * zfcp_fsf_open_wka_port - create and send open wka-port request | |
bd0072ec | 1538 | * @wka_port: pointer to struct zfcp_fc_wka_port |
5ab944f9 SS |
1539 | * Returns: 0 on success, error otherwise |
1540 | */ | |
bd0072ec | 1541 | int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port) |
5ab944f9 | 1542 | { |
564e1c86 | 1543 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
5ab944f9 SS |
1544 | struct zfcp_fsf_req *req; |
1545 | int retval = -EIO; | |
1546 | ||
44a24cb3 | 1547 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1548 | if (zfcp_qdio_sbal_get(qdio)) |
5ab944f9 SS |
1549 | goto out; |
1550 | ||
564e1c86 | 1551 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID, |
1674b405 | 1552 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1553 | qdio->adapter->pool.erp_req); |
09a46c6e | 1554 | |
5ab944f9 SS |
1555 | if (unlikely(IS_ERR(req))) { |
1556 | retval = PTR_ERR(req); | |
1557 | goto out; | |
1558 | } | |
1559 | ||
09a46c6e | 1560 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1561 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
5ab944f9 SS |
1562 | |
1563 | req->handler = zfcp_fsf_open_wka_port_handler; | |
800c0cad | 1564 | hton24(req->qtcb->bottom.support.d_id, wka_port->d_id); |
5ab944f9 SS |
1565 | req->data = wka_port; |
1566 | ||
1567 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1568 | retval = zfcp_fsf_req_send(req); | |
1569 | if (retval) | |
1570 | zfcp_fsf_req_free(req); | |
1571 | out: | |
44a24cb3 | 1572 | spin_unlock_irq(&qdio->req_q_lock); |
5ab944f9 SS |
1573 | return retval; |
1574 | } | |
1575 | ||
1576 | static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req) | |
1577 | { | |
bd0072ec | 1578 | struct zfcp_fc_wka_port *wka_port = req->data; |
5ab944f9 SS |
1579 | |
1580 | if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) { | |
1581 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
ea4a3a6a | 1582 | zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1"); |
5ab944f9 SS |
1583 | } |
1584 | ||
bd0072ec | 1585 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 SS |
1586 | wake_up(&wka_port->completion_wq); |
1587 | } | |
1588 | ||
1589 | /** | |
1590 | * zfcp_fsf_close_wka_port - create and send close wka port request | |
bd0072ec | 1591 | * @wka_port: WKA port to open |
5ab944f9 SS |
1592 | * Returns: 0 on success, error otherwise |
1593 | */ | |
bd0072ec | 1594 | int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port) |
5ab944f9 | 1595 | { |
564e1c86 | 1596 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
5ab944f9 SS |
1597 | struct zfcp_fsf_req *req; |
1598 | int retval = -EIO; | |
1599 | ||
44a24cb3 | 1600 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1601 | if (zfcp_qdio_sbal_get(qdio)) |
5ab944f9 SS |
1602 | goto out; |
1603 | ||
564e1c86 | 1604 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT, |
1674b405 | 1605 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1606 | qdio->adapter->pool.erp_req); |
09a46c6e | 1607 | |
5ab944f9 SS |
1608 | if (unlikely(IS_ERR(req))) { |
1609 | retval = PTR_ERR(req); | |
1610 | goto out; | |
1611 | } | |
1612 | ||
09a46c6e | 1613 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1614 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
5ab944f9 SS |
1615 | |
1616 | req->handler = zfcp_fsf_close_wka_port_handler; | |
1617 | req->data = wka_port; | |
1618 | req->qtcb->header.port_handle = wka_port->handle; | |
1619 | ||
1620 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1621 | retval = zfcp_fsf_req_send(req); | |
1622 | if (retval) | |
1623 | zfcp_fsf_req_free(req); | |
1624 | out: | |
44a24cb3 | 1625 | spin_unlock_irq(&qdio->req_q_lock); |
5ab944f9 SS |
1626 | return retval; |
1627 | } | |
1628 | ||
c41f8cbd | 1629 | static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1630 | { |
c41f8cbd SS |
1631 | struct zfcp_port *port = req->data; |
1632 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
b62a8d9b | 1633 | struct scsi_device *sdev; |
1da177e4 | 1634 | |
c41f8cbd | 1635 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
a5b11dda | 1636 | return; |
1da177e4 | 1637 | |
1da177e4 | 1638 | switch (header->fsf_status) { |
1da177e4 | 1639 | case FSF_PORT_HANDLE_NOT_VALID: |
ea4a3a6a | 1640 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1"); |
c41f8cbd | 1641 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1642 | break; |
1da177e4 | 1643 | case FSF_ACCESS_DENIED: |
a1ca4831 | 1644 | zfcp_cfdc_port_denied(port, &header->fsf_status_qual); |
1da177e4 | 1645 | break; |
1da177e4 | 1646 | case FSF_PORT_BOXED: |
5c815d15 CS |
1647 | /* can't use generic zfcp_erp_modify_port_status because |
1648 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */ | |
1649 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
b62a8d9b CS |
1650 | shost_for_each_device(sdev, port->adapter->scsi_host) |
1651 | if (sdev_to_zfcp(sdev)->port == port) | |
1652 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, | |
1653 | &sdev_to_zfcp(sdev)->status); | |
edaed859 SS |
1654 | zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ACCESS_BOXED); |
1655 | zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, | |
ea4a3a6a | 1656 | "fscpph2"); |
4c571c65 | 1657 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1658 | break; |
1da177e4 | 1659 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1660 | switch (header->fsf_status_qual.word[0]) { |
1661 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
c41f8cbd | 1662 | /* fall through */ |
1da177e4 | 1663 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1664 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1665 | break; |
1da177e4 LT |
1666 | } |
1667 | break; | |
1da177e4 | 1668 | case FSF_GOOD: |
1da177e4 LT |
1669 | /* can't use generic zfcp_erp_modify_port_status because |
1670 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port | |
1671 | */ | |
1672 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
b62a8d9b CS |
1673 | shost_for_each_device(sdev, port->adapter->scsi_host) |
1674 | if (sdev_to_zfcp(sdev)->port == port) | |
1675 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, | |
1676 | &sdev_to_zfcp(sdev)->status); | |
1da177e4 | 1677 | break; |
1da177e4 | 1678 | } |
1da177e4 LT |
1679 | } |
1680 | ||
c41f8cbd SS |
1681 | /** |
1682 | * zfcp_fsf_close_physical_port - close physical port | |
1683 | * @erp_action: pointer to struct zfcp_erp_action | |
1684 | * Returns: 0 on success | |
1da177e4 | 1685 | */ |
c41f8cbd | 1686 | int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1687 | { |
564e1c86 | 1688 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1689 | struct zfcp_fsf_req *req; |
1690 | int retval = -EIO; | |
1691 | ||
44a24cb3 | 1692 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1693 | if (zfcp_qdio_sbal_get(qdio)) |
1da177e4 | 1694 | goto out; |
1da177e4 | 1695 | |
564e1c86 | 1696 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT, |
1674b405 | 1697 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1698 | qdio->adapter->pool.erp_req); |
09a46c6e | 1699 | |
025270f0 | 1700 | if (IS_ERR(req)) { |
c41f8cbd SS |
1701 | retval = PTR_ERR(req); |
1702 | goto out; | |
1703 | } | |
1da177e4 | 1704 | |
09a46c6e | 1705 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1706 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1707 | |
c41f8cbd SS |
1708 | req->data = erp_action->port; |
1709 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1710 | req->erp_action = erp_action; | |
1711 | req->handler = zfcp_fsf_close_physical_port_handler; | |
e60a6d69 | 1712 | erp_action->fsf_req_id = req->req_id; |
c41f8cbd | 1713 | |
287ac01a | 1714 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1715 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1716 | if (retval) { |
c41f8cbd | 1717 | zfcp_fsf_req_free(req); |
e60a6d69 | 1718 | erp_action->fsf_req_id = 0; |
1da177e4 | 1719 | } |
c41f8cbd | 1720 | out: |
44a24cb3 | 1721 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1722 | return retval; |
1723 | } | |
1724 | ||
b62a8d9b | 1725 | static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1726 | { |
c41f8cbd | 1727 | struct zfcp_adapter *adapter = req->adapter; |
b62a8d9b CS |
1728 | struct scsi_device *sdev = req->data; |
1729 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); | |
c41f8cbd SS |
1730 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1731 | struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support; | |
1da177e4 | 1732 | |
c41f8cbd | 1733 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1734 | return; |
1da177e4 | 1735 | |
1da177e4 | 1736 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
b64ddf96 | 1737 | ZFCP_STATUS_COMMON_ACCESS_BOXED | |
b62a8d9b CS |
1738 | ZFCP_STATUS_LUN_SHARED | |
1739 | ZFCP_STATUS_LUN_READONLY, | |
1740 | &zfcp_sdev->status); | |
1da177e4 | 1741 | |
1da177e4 LT |
1742 | switch (header->fsf_status) { |
1743 | ||
1744 | case FSF_PORT_HANDLE_NOT_VALID: | |
ea4a3a6a | 1745 | zfcp_erp_adapter_reopen(adapter, 0, "fsouh_1"); |
c41f8cbd | 1746 | /* fall through */ |
1da177e4 | 1747 | case FSF_LUN_ALREADY_OPEN: |
1da177e4 | 1748 | break; |
1da177e4 | 1749 | case FSF_ACCESS_DENIED: |
a1ca4831 CS |
1750 | zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual); |
1751 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1752 | break; |
1da177e4 | 1753 | case FSF_PORT_BOXED: |
edaed859 SS |
1754 | zfcp_erp_set_port_status(zfcp_sdev->port, |
1755 | ZFCP_STATUS_COMMON_ACCESS_BOXED); | |
1756 | zfcp_erp_port_reopen(zfcp_sdev->port, | |
ea4a3a6a | 1757 | ZFCP_STATUS_COMMON_ERP_FAILED, "fsouh_2"); |
4c571c65 | 1758 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1759 | break; |
1da177e4 | 1760 | case FSF_LUN_SHARING_VIOLATION: |
a1ca4831 | 1761 | zfcp_cfdc_lun_shrng_vltn(sdev, &header->fsf_status_qual); |
c41f8cbd | 1762 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1763 | break; |
1da177e4 | 1764 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: |
c41f8cbd | 1765 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1766 | "No handle is available for LUN " |
1767 | "0x%016Lx on port 0x%016Lx\n", | |
b62a8d9b CS |
1768 | (unsigned long long)zfcp_scsi_dev_lun(sdev), |
1769 | (unsigned long long)zfcp_sdev->port->wwpn); | |
edaed859 | 1770 | zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ERP_FAILED); |
c41f8cbd SS |
1771 | /* fall through */ |
1772 | case FSF_INVALID_COMMAND_OPTION: | |
1773 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1774 | break; |
1da177e4 | 1775 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1776 | switch (header->fsf_status_qual.word[0]) { |
1777 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
b62a8d9b | 1778 | zfcp_fc_test_link(zfcp_sdev->port); |
c41f8cbd | 1779 | /* fall through */ |
1da177e4 | 1780 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1781 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1782 | break; |
1da177e4 LT |
1783 | } |
1784 | break; | |
1785 | ||
1da177e4 | 1786 | case FSF_GOOD: |
b62a8d9b CS |
1787 | zfcp_sdev->lun_handle = header->lun_handle; |
1788 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status); | |
a1ca4831 | 1789 | zfcp_cfdc_open_lun_eval(sdev, bottom); |
1da177e4 | 1790 | break; |
1da177e4 | 1791 | } |
1da177e4 LT |
1792 | } |
1793 | ||
c41f8cbd | 1794 | /** |
b62a8d9b | 1795 | * zfcp_fsf_open_lun - open LUN |
c41f8cbd SS |
1796 | * @erp_action: pointer to struct zfcp_erp_action |
1797 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1798 | */ |
b62a8d9b | 1799 | int zfcp_fsf_open_lun(struct zfcp_erp_action *erp_action) |
1da177e4 | 1800 | { |
c41f8cbd | 1801 | struct zfcp_adapter *adapter = erp_action->adapter; |
564e1c86 | 1802 | struct zfcp_qdio *qdio = adapter->qdio; |
c41f8cbd SS |
1803 | struct zfcp_fsf_req *req; |
1804 | int retval = -EIO; | |
1805 | ||
44a24cb3 | 1806 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1807 | if (zfcp_qdio_sbal_get(qdio)) |
1da177e4 | 1808 | goto out; |
1da177e4 | 1809 | |
564e1c86 | 1810 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN, |
1674b405 | 1811 | SBAL_FLAGS0_TYPE_READ, |
a4623c46 | 1812 | adapter->pool.erp_req); |
09a46c6e | 1813 | |
025270f0 | 1814 | if (IS_ERR(req)) { |
c41f8cbd SS |
1815 | retval = PTR_ERR(req); |
1816 | goto out; | |
1817 | } | |
1818 | ||
09a46c6e | 1819 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1820 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1821 | |
c41f8cbd | 1822 | req->qtcb->header.port_handle = erp_action->port->handle; |
b62a8d9b CS |
1823 | req->qtcb->bottom.support.fcp_lun = zfcp_scsi_dev_lun(erp_action->sdev); |
1824 | req->handler = zfcp_fsf_open_lun_handler; | |
1825 | req->data = erp_action->sdev; | |
c41f8cbd | 1826 | req->erp_action = erp_action; |
e60a6d69 | 1827 | erp_action->fsf_req_id = req->req_id; |
c41f8cbd SS |
1828 | |
1829 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) | |
1830 | req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING; | |
1831 | ||
287ac01a | 1832 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1833 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1834 | if (retval) { |
c41f8cbd | 1835 | zfcp_fsf_req_free(req); |
e60a6d69 | 1836 | erp_action->fsf_req_id = 0; |
1da177e4 | 1837 | } |
c41f8cbd | 1838 | out: |
44a24cb3 | 1839 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1840 | return retval; |
1841 | } | |
1842 | ||
b62a8d9b | 1843 | static void zfcp_fsf_close_lun_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1844 | { |
b62a8d9b CS |
1845 | struct scsi_device *sdev = req->data; |
1846 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); | |
1da177e4 | 1847 | |
c41f8cbd | 1848 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1849 | return; |
1da177e4 | 1850 | |
c41f8cbd | 1851 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1852 | case FSF_PORT_HANDLE_NOT_VALID: |
ea4a3a6a | 1853 | zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fscuh_1"); |
c41f8cbd | 1854 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1855 | break; |
1da177e4 | 1856 | case FSF_LUN_HANDLE_NOT_VALID: |
ea4a3a6a | 1857 | zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fscuh_2"); |
c41f8cbd | 1858 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1859 | break; |
1da177e4 | 1860 | case FSF_PORT_BOXED: |
edaed859 SS |
1861 | zfcp_erp_set_port_status(zfcp_sdev->port, |
1862 | ZFCP_STATUS_COMMON_ACCESS_BOXED); | |
1863 | zfcp_erp_port_reopen(zfcp_sdev->port, | |
ea4a3a6a | 1864 | ZFCP_STATUS_COMMON_ERP_FAILED, "fscuh_3"); |
4c571c65 | 1865 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1866 | break; |
1da177e4 | 1867 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 1868 | switch (req->qtcb->header.fsf_status_qual.word[0]) { |
1da177e4 | 1869 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
b62a8d9b | 1870 | zfcp_fc_test_link(zfcp_sdev->port); |
c41f8cbd | 1871 | /* fall through */ |
1da177e4 | 1872 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1873 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1874 | break; |
1875 | } | |
1876 | break; | |
1da177e4 | 1877 | case FSF_GOOD: |
b62a8d9b | 1878 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status); |
1da177e4 | 1879 | break; |
1da177e4 | 1880 | } |
1da177e4 LT |
1881 | } |
1882 | ||
1883 | /** | |
b62a8d9b CS |
1884 | * zfcp_fsf_close_LUN - close LUN |
1885 | * @erp_action: pointer to erp_action triggering the "close LUN" | |
c41f8cbd | 1886 | * Returns: 0 on success, error otherwise |
1da177e4 | 1887 | */ |
b62a8d9b | 1888 | int zfcp_fsf_close_lun(struct zfcp_erp_action *erp_action) |
1da177e4 | 1889 | { |
564e1c86 | 1890 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
b62a8d9b | 1891 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(erp_action->sdev); |
c41f8cbd SS |
1892 | struct zfcp_fsf_req *req; |
1893 | int retval = -EIO; | |
1da177e4 | 1894 | |
44a24cb3 | 1895 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1896 | if (zfcp_qdio_sbal_get(qdio)) |
1da177e4 | 1897 | goto out; |
09a46c6e | 1898 | |
564e1c86 | 1899 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN, |
1674b405 | 1900 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1901 | qdio->adapter->pool.erp_req); |
09a46c6e | 1902 | |
025270f0 | 1903 | if (IS_ERR(req)) { |
c41f8cbd SS |
1904 | retval = PTR_ERR(req); |
1905 | goto out; | |
1906 | } | |
1da177e4 | 1907 | |
09a46c6e | 1908 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1909 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1910 | |
c41f8cbd | 1911 | req->qtcb->header.port_handle = erp_action->port->handle; |
b62a8d9b CS |
1912 | req->qtcb->header.lun_handle = zfcp_sdev->lun_handle; |
1913 | req->handler = zfcp_fsf_close_lun_handler; | |
1914 | req->data = erp_action->sdev; | |
c41f8cbd | 1915 | req->erp_action = erp_action; |
e60a6d69 | 1916 | erp_action->fsf_req_id = req->req_id; |
fdf23452 | 1917 | |
287ac01a | 1918 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
1919 | retval = zfcp_fsf_req_send(req); |
1920 | if (retval) { | |
1921 | zfcp_fsf_req_free(req); | |
e60a6d69 | 1922 | erp_action->fsf_req_id = 0; |
c41f8cbd SS |
1923 | } |
1924 | out: | |
44a24cb3 | 1925 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd | 1926 | return retval; |
1da177e4 LT |
1927 | } |
1928 | ||
c9615858 CS |
1929 | static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat) |
1930 | { | |
1931 | lat_rec->sum += lat; | |
c41f8cbd SS |
1932 | lat_rec->min = min(lat_rec->min, lat); |
1933 | lat_rec->max = max(lat_rec->max, lat); | |
c9615858 CS |
1934 | } |
1935 | ||
d9742b42 | 1936 | static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi) |
c9615858 | 1937 | { |
d9742b42 CS |
1938 | struct fsf_qual_latency_info *lat_in; |
1939 | struct latency_cont *lat = NULL; | |
b62a8d9b | 1940 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scsi->device); |
d9742b42 CS |
1941 | struct zfcp_blk_drv_data blktrc; |
1942 | int ticks = req->adapter->timer_ticks; | |
c9615858 | 1943 | |
d9742b42 | 1944 | lat_in = &req->qtcb->prefix.prot_status_qual.latency_info; |
c9615858 | 1945 | |
d9742b42 CS |
1946 | blktrc.flags = 0; |
1947 | blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC; | |
1948 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
1949 | blktrc.flags |= ZFCP_BLK_REQ_ERROR; | |
706eca49 | 1950 | blktrc.inb_usage = 0; |
34c2b712 | 1951 | blktrc.outb_usage = req->qdio_req.qdio_outb_usage; |
d9742b42 | 1952 | |
5bbf297c CS |
1953 | if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA && |
1954 | !(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
d9742b42 CS |
1955 | blktrc.flags |= ZFCP_BLK_LAT_VALID; |
1956 | blktrc.channel_lat = lat_in->channel_lat * ticks; | |
1957 | blktrc.fabric_lat = lat_in->fabric_lat * ticks; | |
1958 | ||
1959 | switch (req->qtcb->bottom.io.data_direction) { | |
ef3eb71d FB |
1960 | case FSF_DATADIR_DIF_READ_STRIP: |
1961 | case FSF_DATADIR_DIF_READ_CONVERT: | |
d9742b42 | 1962 | case FSF_DATADIR_READ: |
b62a8d9b | 1963 | lat = &zfcp_sdev->latencies.read; |
d9742b42 | 1964 | break; |
ef3eb71d FB |
1965 | case FSF_DATADIR_DIF_WRITE_INSERT: |
1966 | case FSF_DATADIR_DIF_WRITE_CONVERT: | |
d9742b42 | 1967 | case FSF_DATADIR_WRITE: |
b62a8d9b | 1968 | lat = &zfcp_sdev->latencies.write; |
d9742b42 CS |
1969 | break; |
1970 | case FSF_DATADIR_CMND: | |
b62a8d9b | 1971 | lat = &zfcp_sdev->latencies.cmd; |
d9742b42 CS |
1972 | break; |
1973 | } | |
1da177e4 | 1974 | |
d9742b42 | 1975 | if (lat) { |
b62a8d9b | 1976 | spin_lock(&zfcp_sdev->latencies.lock); |
d9742b42 CS |
1977 | zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat); |
1978 | zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat); | |
1979 | lat->counter++; | |
b62a8d9b | 1980 | spin_unlock(&zfcp_sdev->latencies.lock); |
d9742b42 | 1981 | } |
0997f1c5 | 1982 | } |
0997f1c5 | 1983 | |
d9742b42 CS |
1984 | blk_add_driver_data(scsi->request->q, scsi->request, &blktrc, |
1985 | sizeof(blktrc)); | |
0997f1c5 | 1986 | } |
0997f1c5 | 1987 | |
c61b536c | 1988 | static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req *req) |
c41f8cbd | 1989 | { |
b62a8d9b CS |
1990 | struct scsi_cmnd *scmnd = req->data; |
1991 | struct scsi_device *sdev = scmnd->device; | |
1992 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); | |
c41f8cbd SS |
1993 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1994 | ||
c41f8cbd | 1995 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
c61b536c | 1996 | return; |
1da177e4 | 1997 | |
c41f8cbd SS |
1998 | switch (header->fsf_status) { |
1999 | case FSF_HANDLE_MISMATCH: | |
2000 | case FSF_PORT_HANDLE_NOT_VALID: | |
ea4a3a6a | 2001 | zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fssfch1"); |
c41f8cbd SS |
2002 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2003 | break; | |
2004 | case FSF_FCPLUN_NOT_VALID: | |
2005 | case FSF_LUN_HANDLE_NOT_VALID: | |
ea4a3a6a | 2006 | zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fssfch2"); |
c41f8cbd | 2007 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2008 | break; |
c41f8cbd SS |
2009 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
2010 | zfcp_fsf_class_not_supp(req); | |
1da177e4 | 2011 | break; |
c41f8cbd | 2012 | case FSF_ACCESS_DENIED: |
a1ca4831 CS |
2013 | zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual); |
2014 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
c41f8cbd SS |
2015 | break; |
2016 | case FSF_DIRECTION_INDICATOR_NOT_VALID: | |
2017 | dev_err(&req->adapter->ccw_device->dev, | |
b62a8d9b | 2018 | "Incorrect direction %d, LUN 0x%016Lx on port " |
ff3b24fa | 2019 | "0x%016Lx closed\n", |
c41f8cbd | 2020 | req->qtcb->bottom.io.data_direction, |
b62a8d9b CS |
2021 | (unsigned long long)zfcp_scsi_dev_lun(sdev), |
2022 | (unsigned long long)zfcp_sdev->port->wwpn); | |
2023 | zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0, | |
ea4a3a6a | 2024 | "fssfch3"); |
c41f8cbd SS |
2025 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2026 | break; | |
2027 | case FSF_CMND_LENGTH_NOT_VALID: | |
2028 | dev_err(&req->adapter->ccw_device->dev, | |
b62a8d9b | 2029 | "Incorrect CDB length %d, LUN 0x%016Lx on " |
ff3b24fa | 2030 | "port 0x%016Lx closed\n", |
c41f8cbd | 2031 | req->qtcb->bottom.io.fcp_cmnd_length, |
b62a8d9b CS |
2032 | (unsigned long long)zfcp_scsi_dev_lun(sdev), |
2033 | (unsigned long long)zfcp_sdev->port->wwpn); | |
2034 | zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0, | |
ea4a3a6a | 2035 | "fssfch4"); |
c41f8cbd SS |
2036 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2037 | break; | |
2038 | case FSF_PORT_BOXED: | |
edaed859 SS |
2039 | zfcp_erp_set_port_status(zfcp_sdev->port, |
2040 | ZFCP_STATUS_COMMON_ACCESS_BOXED); | |
2041 | zfcp_erp_port_reopen(zfcp_sdev->port, | |
ea4a3a6a | 2042 | ZFCP_STATUS_COMMON_ERP_FAILED, "fssfch5"); |
4c571c65 | 2043 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
2044 | break; |
2045 | case FSF_LUN_BOXED: | |
edaed859 SS |
2046 | zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED); |
2047 | zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, | |
ea4a3a6a | 2048 | "fssfch6"); |
4c571c65 | 2049 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
2050 | break; |
2051 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
2052 | if (header->fsf_status_qual.word[0] == | |
2053 | FSF_SQ_INVOKE_LINK_TEST_PROCEDURE) | |
b62a8d9b | 2054 | zfcp_fc_test_link(zfcp_sdev->port); |
c41f8cbd | 2055 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2056 | break; |
1da177e4 | 2057 | } |
c61b536c CS |
2058 | } |
2059 | ||
2060 | static void zfcp_fsf_fcp_cmnd_handler(struct zfcp_fsf_req *req) | |
2061 | { | |
2062 | struct scsi_cmnd *scpnt; | |
2063 | struct fcp_resp_with_ext *fcp_rsp; | |
2064 | unsigned long flags; | |
2065 | ||
c61b536c CS |
2066 | read_lock_irqsave(&req->adapter->abort_lock, flags); |
2067 | ||
2068 | scpnt = req->data; | |
2069 | if (unlikely(!scpnt)) { | |
2070 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); | |
2071 | return; | |
c41f8cbd | 2072 | } |
c61b536c | 2073 | |
5bfb2c31 SS |
2074 | zfcp_fsf_fcp_handler_common(req); |
2075 | ||
c61b536c CS |
2076 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { |
2077 | set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED); | |
2078 | goto skip_fsfstatus; | |
2079 | } | |
2080 | ||
2081 | switch (req->qtcb->header.fsf_status) { | |
2082 | case FSF_INCONSISTENT_PROT_DATA: | |
2083 | case FSF_INVALID_PROT_PARM: | |
2084 | set_host_byte(scpnt, DID_ERROR); | |
2085 | goto skip_fsfstatus; | |
2086 | case FSF_BLOCK_GUARD_CHECK_FAILURE: | |
2087 | zfcp_scsi_dif_sense_error(scpnt, 0x1); | |
2088 | goto skip_fsfstatus; | |
2089 | case FSF_APP_TAG_CHECK_FAILURE: | |
2090 | zfcp_scsi_dif_sense_error(scpnt, 0x2); | |
2091 | goto skip_fsfstatus; | |
2092 | case FSF_REF_TAG_CHECK_FAILURE: | |
2093 | zfcp_scsi_dif_sense_error(scpnt, 0x3); | |
2094 | goto skip_fsfstatus; | |
2095 | } | |
2096 | fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp; | |
2097 | zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt); | |
2098 | ||
2099 | skip_fsfstatus: | |
2100 | zfcp_fsf_req_trace(req, scpnt); | |
250a1352 | 2101 | zfcp_dbf_scsi_result(scpnt, req); |
c61b536c CS |
2102 | |
2103 | scpnt->host_scribble = NULL; | |
2104 | (scpnt->scsi_done) (scpnt); | |
2105 | /* | |
2106 | * We must hold this lock until scsi_done has been called. | |
2107 | * Otherwise we may call scsi_done after abort regarding this | |
2108 | * command has completed. | |
2109 | * Note: scsi_done must not block! | |
2110 | */ | |
2111 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); | |
1da177e4 LT |
2112 | } |
2113 | ||
ef3eb71d FB |
2114 | static int zfcp_fsf_set_data_dir(struct scsi_cmnd *scsi_cmnd, u32 *data_dir) |
2115 | { | |
2116 | switch (scsi_get_prot_op(scsi_cmnd)) { | |
2117 | case SCSI_PROT_NORMAL: | |
2118 | switch (scsi_cmnd->sc_data_direction) { | |
2119 | case DMA_NONE: | |
2120 | *data_dir = FSF_DATADIR_CMND; | |
2121 | break; | |
2122 | case DMA_FROM_DEVICE: | |
2123 | *data_dir = FSF_DATADIR_READ; | |
2124 | break; | |
2125 | case DMA_TO_DEVICE: | |
2126 | *data_dir = FSF_DATADIR_WRITE; | |
2127 | break; | |
2128 | case DMA_BIDIRECTIONAL: | |
2129 | return -EINVAL; | |
2130 | } | |
2131 | break; | |
2132 | ||
2133 | case SCSI_PROT_READ_STRIP: | |
2134 | *data_dir = FSF_DATADIR_DIF_READ_STRIP; | |
2135 | break; | |
2136 | case SCSI_PROT_WRITE_INSERT: | |
2137 | *data_dir = FSF_DATADIR_DIF_WRITE_INSERT; | |
2138 | break; | |
2139 | case SCSI_PROT_READ_PASS: | |
2140 | *data_dir = FSF_DATADIR_DIF_READ_CONVERT; | |
2141 | break; | |
2142 | case SCSI_PROT_WRITE_PASS: | |
2143 | *data_dir = FSF_DATADIR_DIF_WRITE_CONVERT; | |
2144 | break; | |
2145 | default: | |
2146 | return -EINVAL; | |
2147 | } | |
2148 | ||
2149 | return 0; | |
2150 | } | |
2151 | ||
c41f8cbd | 2152 | /** |
b62a8d9b | 2153 | * zfcp_fsf_fcp_cmnd - initiate an FCP command (for a SCSI command) |
c41f8cbd | 2154 | * @scsi_cmnd: scsi command to be sent |
1da177e4 | 2155 | */ |
b62a8d9b | 2156 | int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd) |
1da177e4 | 2157 | { |
c41f8cbd | 2158 | struct zfcp_fsf_req *req; |
4318e08c | 2159 | struct fcp_cmnd *fcp_cmnd; |
bc90c863 | 2160 | unsigned int sbtype = SBAL_FLAGS0_TYPE_READ; |
ef3eb71d | 2161 | int real_bytes, retval = -EIO, dix_bytes = 0; |
b62a8d9b CS |
2162 | struct scsi_device *sdev = scsi_cmnd->device; |
2163 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); | |
2164 | struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; | |
564e1c86 | 2165 | struct zfcp_qdio *qdio = adapter->qdio; |
ef3eb71d | 2166 | struct fsf_qtcb_bottom_io *io; |
e55f8753 | 2167 | unsigned long flags; |
1da177e4 | 2168 | |
b62a8d9b | 2169 | if (unlikely(!(atomic_read(&zfcp_sdev->status) & |
c41f8cbd SS |
2170 | ZFCP_STATUS_COMMON_UNBLOCKED))) |
2171 | return -EBUSY; | |
1da177e4 | 2172 | |
e55f8753 | 2173 | spin_lock_irqsave(&qdio->req_q_lock, flags); |
706eca49 | 2174 | if (atomic_read(&qdio->req_q_free) <= 0) { |
564e1c86 | 2175 | atomic_inc(&qdio->req_q_full); |
c41f8cbd | 2176 | goto out; |
8fdf30d5 | 2177 | } |
09a46c6e | 2178 | |
1674b405 CS |
2179 | if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE) |
2180 | sbtype = SBAL_FLAGS0_TYPE_WRITE; | |
2181 | ||
564e1c86 | 2182 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND, |
1674b405 | 2183 | sbtype, adapter->pool.scsi_req); |
09a46c6e | 2184 | |
025270f0 | 2185 | if (IS_ERR(req)) { |
c41f8cbd SS |
2186 | retval = PTR_ERR(req); |
2187 | goto out; | |
2188 | } | |
2189 | ||
ef3eb71d FB |
2190 | scsi_cmnd->host_scribble = (unsigned char *) req->req_id; |
2191 | ||
2192 | io = &req->qtcb->bottom.io; | |
09a46c6e | 2193 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
c41f8cbd | 2194 | req->data = scsi_cmnd; |
c61b536c | 2195 | req->handler = zfcp_fsf_fcp_cmnd_handler; |
b62a8d9b CS |
2196 | req->qtcb->header.lun_handle = zfcp_sdev->lun_handle; |
2197 | req->qtcb->header.port_handle = zfcp_sdev->port->handle; | |
ef3eb71d FB |
2198 | io->service_class = FSF_CLASS_3; |
2199 | io->fcp_cmnd_length = FCP_CMND_LEN; | |
c41f8cbd | 2200 | |
ef3eb71d FB |
2201 | if (scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) { |
2202 | io->data_block_length = scsi_cmnd->device->sector_size; | |
2203 | io->ref_tag_value = scsi_get_lba(scsi_cmnd) & 0xFFFFFFFF; | |
1da177e4 LT |
2204 | } |
2205 | ||
ef3eb71d FB |
2206 | zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction); |
2207 | ||
4318e08c CS |
2208 | fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd; |
2209 | zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd); | |
1da177e4 | 2210 | |
ef3eb71d FB |
2211 | if (scsi_prot_sg_count(scsi_cmnd)) { |
2212 | zfcp_qdio_set_data_div(qdio, &req->qdio_req, | |
2213 | scsi_prot_sg_count(scsi_cmnd)); | |
2214 | dix_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, | |
2215 | scsi_prot_sglist(scsi_cmnd)); | |
2216 | io->prot_data_length = dix_bytes; | |
2217 | } | |
2218 | ||
1674b405 | 2219 | real_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, |
01b04759 | 2220 | scsi_sglist(scsi_cmnd)); |
ef3eb71d FB |
2221 | |
2222 | if (unlikely(real_bytes < 0) || unlikely(dix_bytes < 0)) | |
c41f8cbd | 2223 | goto failed_scsi_cmnd; |
1da177e4 | 2224 | |
ef3eb71d FB |
2225 | zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req); |
2226 | ||
c41f8cbd SS |
2227 | retval = zfcp_fsf_req_send(req); |
2228 | if (unlikely(retval)) | |
2229 | goto failed_scsi_cmnd; | |
1da177e4 | 2230 | |
c41f8cbd | 2231 | goto out; |
1da177e4 | 2232 | |
c41f8cbd | 2233 | failed_scsi_cmnd: |
c41f8cbd SS |
2234 | zfcp_fsf_req_free(req); |
2235 | scsi_cmnd->host_scribble = NULL; | |
2236 | out: | |
e55f8753 | 2237 | spin_unlock_irqrestore(&qdio->req_q_lock, flags); |
c41f8cbd | 2238 | return retval; |
1da177e4 LT |
2239 | } |
2240 | ||
c61b536c CS |
2241 | static void zfcp_fsf_fcp_task_mgmt_handler(struct zfcp_fsf_req *req) |
2242 | { | |
2243 | struct fcp_resp_with_ext *fcp_rsp; | |
2244 | struct fcp_resp_rsp_info *rsp_info; | |
2245 | ||
2246 | zfcp_fsf_fcp_handler_common(req); | |
2247 | ||
2248 | fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp; | |
2249 | rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1]; | |
2250 | ||
2251 | if ((rsp_info->rsp_code != FCP_TMF_CMPL) || | |
2252 | (req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
2253 | req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
2254 | } | |
2255 | ||
1da177e4 | 2256 | /** |
b62a8d9b CS |
2257 | * zfcp_fsf_fcp_task_mgmt - send SCSI task management command |
2258 | * @scmnd: SCSI command to send the task management command for | |
c41f8cbd | 2259 | * @tm_flags: unsigned byte for task management flags |
c41f8cbd | 2260 | * Returns: on success pointer to struct fsf_req, NULL otherwise |
1da177e4 | 2261 | */ |
b62a8d9b CS |
2262 | struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_cmnd *scmnd, |
2263 | u8 tm_flags) | |
1da177e4 | 2264 | { |
c41f8cbd | 2265 | struct zfcp_fsf_req *req = NULL; |
4318e08c | 2266 | struct fcp_cmnd *fcp_cmnd; |
b62a8d9b CS |
2267 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scmnd->device); |
2268 | struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio; | |
1da177e4 | 2269 | |
b62a8d9b | 2270 | if (unlikely(!(atomic_read(&zfcp_sdev->status) & |
c41f8cbd SS |
2271 | ZFCP_STATUS_COMMON_UNBLOCKED))) |
2272 | return NULL; | |
1da177e4 | 2273 | |
44a24cb3 | 2274 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 2275 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 2276 | goto out; |
09a46c6e | 2277 | |
564e1c86 | 2278 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND, |
1674b405 | 2279 | SBAL_FLAGS0_TYPE_WRITE, |
564e1c86 | 2280 | qdio->adapter->pool.scsi_req); |
09a46c6e | 2281 | |
633528c3 SS |
2282 | if (IS_ERR(req)) { |
2283 | req = NULL; | |
c41f8cbd | 2284 | goto out; |
633528c3 | 2285 | } |
1da177e4 | 2286 | |
c41f8cbd | 2287 | req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT; |
b62a8d9b | 2288 | req->data = scmnd; |
c61b536c | 2289 | req->handler = zfcp_fsf_fcp_task_mgmt_handler; |
b62a8d9b CS |
2290 | req->qtcb->header.lun_handle = zfcp_sdev->lun_handle; |
2291 | req->qtcb->header.port_handle = zfcp_sdev->port->handle; | |
c41f8cbd SS |
2292 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; |
2293 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
4318e08c | 2294 | req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN; |
c41f8cbd | 2295 | |
1674b405 | 2296 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 2297 | |
4318e08c | 2298 | fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd; |
b62a8d9b | 2299 | zfcp_fc_fcp_tm(fcp_cmnd, scmnd->device, tm_flags); |
1da177e4 | 2300 | |
c41f8cbd SS |
2301 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); |
2302 | if (!zfcp_fsf_req_send(req)) | |
2303 | goto out; | |
1da177e4 | 2304 | |
c41f8cbd SS |
2305 | zfcp_fsf_req_free(req); |
2306 | req = NULL; | |
2307 | out: | |
44a24cb3 | 2308 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd SS |
2309 | return req; |
2310 | } | |
1da177e4 | 2311 | |
c41f8cbd SS |
2312 | static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req) |
2313 | { | |
1da177e4 LT |
2314 | } |
2315 | ||
c41f8cbd SS |
2316 | /** |
2317 | * zfcp_fsf_control_file - control file upload/download | |
2318 | * @adapter: pointer to struct zfcp_adapter | |
2319 | * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc | |
2320 | * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise | |
1da177e4 | 2321 | */ |
c41f8cbd SS |
2322 | struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, |
2323 | struct zfcp_fsf_cfdc *fsf_cfdc) | |
1da177e4 | 2324 | { |
564e1c86 | 2325 | struct zfcp_qdio *qdio = adapter->qdio; |
c41f8cbd SS |
2326 | struct zfcp_fsf_req *req = NULL; |
2327 | struct fsf_qtcb_bottom_support *bottom; | |
2328 | int direction, retval = -EIO, bytes; | |
2329 | ||
2330 | if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) | |
2331 | return ERR_PTR(-EOPNOTSUPP); | |
2332 | ||
2333 | switch (fsf_cfdc->command) { | |
2334 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
2335 | direction = SBAL_FLAGS0_TYPE_WRITE; | |
2336 | break; | |
2337 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
2338 | direction = SBAL_FLAGS0_TYPE_READ; | |
2339 | break; | |
2340 | default: | |
2341 | return ERR_PTR(-EINVAL); | |
2342 | } | |
1da177e4 | 2343 | |
44a24cb3 | 2344 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 2345 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 2346 | goto out; |
1da177e4 | 2347 | |
1674b405 | 2348 | req = zfcp_fsf_req_create(qdio, fsf_cfdc->command, direction, NULL); |
025270f0 | 2349 | if (IS_ERR(req)) { |
c41f8cbd SS |
2350 | retval = -EPERM; |
2351 | goto out; | |
2352 | } | |
1da177e4 | 2353 | |
c41f8cbd | 2354 | req->handler = zfcp_fsf_control_file_handler; |
1da177e4 | 2355 | |
c41f8cbd SS |
2356 | bottom = &req->qtcb->bottom.support; |
2357 | bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE; | |
2358 | bottom->option = fsf_cfdc->option; | |
8a36e453 | 2359 | |
01b04759 SS |
2360 | bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, fsf_cfdc->sg); |
2361 | ||
c41f8cbd | 2362 | if (bytes != ZFCP_CFDC_MAX_SIZE) { |
c41f8cbd SS |
2363 | zfcp_fsf_req_free(req); |
2364 | goto out; | |
2365 | } | |
ef3eb71d | 2366 | zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req); |
1da177e4 | 2367 | |
c41f8cbd SS |
2368 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
2369 | retval = zfcp_fsf_req_send(req); | |
2370 | out: | |
44a24cb3 | 2371 | spin_unlock_irq(&qdio->req_q_lock); |
8a36e453 | 2372 | |
c41f8cbd | 2373 | if (!retval) { |
058b8647 | 2374 | wait_for_completion(&req->completion); |
c41f8cbd | 2375 | return req; |
1da177e4 | 2376 | } |
c41f8cbd | 2377 | return ERR_PTR(retval); |
1da177e4 | 2378 | } |
bd63eaf4 SS |
2379 | |
2380 | /** | |
2381 | * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO | |
2382 | * @adapter: pointer to struct zfcp_adapter | |
2383 | * @sbal_idx: response queue index of SBAL to be processed | |
2384 | */ | |
564e1c86 | 2385 | void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx) |
bd63eaf4 | 2386 | { |
564e1c86 | 2387 | struct zfcp_adapter *adapter = qdio->adapter; |
706eca49 | 2388 | struct qdio_buffer *sbal = qdio->res_q[sbal_idx]; |
bd63eaf4 SS |
2389 | struct qdio_buffer_element *sbale; |
2390 | struct zfcp_fsf_req *fsf_req; | |
b6bd2fb9 | 2391 | unsigned long req_id; |
bd63eaf4 SS |
2392 | int idx; |
2393 | ||
2394 | for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) { | |
2395 | ||
2396 | sbale = &sbal->element[idx]; | |
2397 | req_id = (unsigned long) sbale->addr; | |
b6bd2fb9 | 2398 | fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id); |
bd63eaf4 | 2399 | |
339f4f4e | 2400 | if (!fsf_req) { |
bd63eaf4 SS |
2401 | /* |
2402 | * Unknown request means that we have potentially memory | |
2403 | * corruption and must stop the machine immediately. | |
2404 | */ | |
339f4f4e | 2405 | zfcp_qdio_siosl(adapter); |
bd63eaf4 SS |
2406 | panic("error: unknown req_id (%lx) on adapter %s.\n", |
2407 | req_id, dev_name(&adapter->ccw_device->dev)); | |
339f4f4e | 2408 | } |
bd63eaf4 | 2409 | |
34c2b712 | 2410 | fsf_req->qdio_req.sbal_response = sbal_idx; |
bd63eaf4 SS |
2411 | zfcp_fsf_req_complete(fsf_req); |
2412 | ||
2413 | if (likely(sbale->flags & SBAL_FLAGS_LAST_ENTRY)) | |
2414 | break; | |
2415 | } | |
2416 | } | |
a54ca0f6 SS |
2417 | |
2418 | struct zfcp_fsf_req *zfcp_fsf_get_req(struct zfcp_qdio *qdio, | |
2419 | struct qdio_buffer *sbal) | |
2420 | { | |
2421 | struct qdio_buffer_element *sbale = &sbal->element[0]; | |
2422 | u64 req_id = (unsigned long) sbale->addr; | |
2423 | ||
2424 | return zfcp_reqlist_find(qdio->adapter->req_list, req_id); | |
2425 | } |