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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); |
c7b279ae | 215 | mempool_free(virt_to_page(sr_buf), adapter->pool.sr_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 | ||
c7b279ae | 268 | mempool_free(virt_to_page(sr_buf), adapter->pool.sr_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; | |
c7b279ae | 726 | struct page *page; |
c41f8cbd | 727 | int retval = -EIO; |
1da177e4 | 728 | |
44a24cb3 | 729 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 730 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd SS |
731 | goto out; |
732 | ||
1674b405 | 733 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS, 0, |
a4623c46 | 734 | adapter->pool.status_read_req); |
025270f0 | 735 | if (IS_ERR(req)) { |
c41f8cbd SS |
736 | retval = PTR_ERR(req); |
737 | goto out; | |
1da177e4 LT |
738 | } |
739 | ||
c7b279ae CS |
740 | page = mempool_alloc(adapter->pool.sr_data, GFP_ATOMIC); |
741 | if (!page) { | |
c41f8cbd SS |
742 | retval = -ENOMEM; |
743 | goto failed_buf; | |
744 | } | |
c7b279ae | 745 | sr_buf = page_address(page); |
c41f8cbd SS |
746 | memset(sr_buf, 0, sizeof(*sr_buf)); |
747 | req->data = sr_buf; | |
1674b405 CS |
748 | |
749 | zfcp_qdio_fill_next(qdio, &req->qdio_req, sr_buf, sizeof(*sr_buf)); | |
750 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); | |
059c97d0 | 751 | |
c41f8cbd SS |
752 | retval = zfcp_fsf_req_send(req); |
753 | if (retval) | |
754 | goto failed_req_send; | |
1da177e4 | 755 | |
c41f8cbd SS |
756 | goto out; |
757 | ||
758 | failed_req_send: | |
a54ca0f6 | 759 | req->data = NULL; |
c7b279ae | 760 | mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data); |
c41f8cbd | 761 | failed_buf: |
a54ca0f6 | 762 | zfcp_dbf_hba_fsf_uss("fssr__1", req); |
c41f8cbd | 763 | zfcp_fsf_req_free(req); |
c41f8cbd | 764 | out: |
44a24cb3 | 765 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd SS |
766 | return retval; |
767 | } | |
768 | ||
769 | static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req) | |
770 | { | |
b62a8d9b CS |
771 | struct scsi_device *sdev = req->data; |
772 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); | |
c41f8cbd SS |
773 | union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual; |
774 | ||
775 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
776 | return; | |
777 | ||
778 | switch (req->qtcb->header.fsf_status) { | |
1da177e4 | 779 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd | 780 | if (fsq->word[0] == fsq->word[1]) { |
b62a8d9b | 781 | zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, |
ea4a3a6a | 782 | "fsafch1"); |
c41f8cbd | 783 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
784 | } |
785 | break; | |
1da177e4 | 786 | case FSF_LUN_HANDLE_NOT_VALID: |
c41f8cbd | 787 | if (fsq->word[0] == fsq->word[1]) { |
ea4a3a6a | 788 | zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fsafch2"); |
c41f8cbd | 789 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
790 | } |
791 | break; | |
1da177e4 | 792 | case FSF_FCP_COMMAND_DOES_NOT_EXIST: |
c41f8cbd | 793 | req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED; |
1da177e4 | 794 | break; |
1da177e4 | 795 | case FSF_PORT_BOXED: |
edaed859 SS |
796 | zfcp_erp_set_port_status(zfcp_sdev->port, |
797 | ZFCP_STATUS_COMMON_ACCESS_BOXED); | |
798 | zfcp_erp_port_reopen(zfcp_sdev->port, | |
ea4a3a6a | 799 | ZFCP_STATUS_COMMON_ERP_FAILED, "fsafch3"); |
4c571c65 | 800 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 801 | break; |
1da177e4 | 802 | case FSF_LUN_BOXED: |
edaed859 SS |
803 | zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED); |
804 | zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, | |
ea4a3a6a | 805 | "fsafch4"); |
4c571c65 | 806 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 807 | break; |
1da177e4 | 808 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 809 | switch (fsq->word[0]) { |
1da177e4 | 810 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
b62a8d9b | 811 | zfcp_fc_test_link(zfcp_sdev->port); |
dceab655 | 812 | /* fall through */ |
1da177e4 | 813 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 814 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 815 | break; |
1da177e4 LT |
816 | } |
817 | break; | |
1da177e4 | 818 | case FSF_GOOD: |
c41f8cbd | 819 | req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED; |
1da177e4 | 820 | break; |
1da177e4 | 821 | } |
1da177e4 LT |
822 | } |
823 | ||
824 | /** | |
b62a8d9b CS |
825 | * zfcp_fsf_abort_fcp_cmnd - abort running SCSI command |
826 | * @scmnd: The SCSI command to abort | |
c41f8cbd | 827 | * Returns: pointer to struct zfcp_fsf_req |
1da177e4 | 828 | */ |
1da177e4 | 829 | |
b62a8d9b | 830 | struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *scmnd) |
1da177e4 | 831 | { |
c41f8cbd | 832 | struct zfcp_fsf_req *req = NULL; |
b62a8d9b CS |
833 | struct scsi_device *sdev = scmnd->device; |
834 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); | |
835 | struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio; | |
836 | unsigned long old_req_id = (unsigned long) scmnd->host_scribble; | |
8a36e453 | 837 | |
44a24cb3 | 838 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 839 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 840 | goto out; |
564e1c86 | 841 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND, |
1674b405 | 842 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 843 | qdio->adapter->pool.scsi_abort); |
633528c3 SS |
844 | if (IS_ERR(req)) { |
845 | req = NULL; | |
c41f8cbd | 846 | goto out; |
633528c3 | 847 | } |
2abbe866 | 848 | |
b62a8d9b | 849 | if (unlikely(!(atomic_read(&zfcp_sdev->status) & |
c41f8cbd SS |
850 | ZFCP_STATUS_COMMON_UNBLOCKED))) |
851 | goto out_error_free; | |
1da177e4 | 852 | |
1674b405 | 853 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 854 | |
6fbf25e8 | 855 | req->data = sdev; |
c41f8cbd | 856 | req->handler = zfcp_fsf_abort_fcp_command_handler; |
b62a8d9b CS |
857 | req->qtcb->header.lun_handle = zfcp_sdev->lun_handle; |
858 | req->qtcb->header.port_handle = zfcp_sdev->port->handle; | |
c41f8cbd SS |
859 | req->qtcb->bottom.support.req_handle = (u64) old_req_id; |
860 | ||
861 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); | |
862 | if (!zfcp_fsf_req_send(req)) | |
863 | goto out; | |
864 | ||
865 | out_error_free: | |
866 | zfcp_fsf_req_free(req); | |
867 | req = NULL; | |
868 | out: | |
44a24cb3 | 869 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd | 870 | return req; |
1da177e4 LT |
871 | } |
872 | ||
c41f8cbd | 873 | static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) |
1da177e4 | 874 | { |
c41f8cbd | 875 | struct zfcp_adapter *adapter = req->adapter; |
7c7dc196 | 876 | struct zfcp_fsf_ct_els *ct = req->data; |
c41f8cbd | 877 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1da177e4 | 878 | |
7c7dc196 | 879 | ct->status = -EINVAL; |
1da177e4 | 880 | |
c41f8cbd | 881 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
882 | goto skip_fsfstatus; |
883 | ||
1da177e4 | 884 | switch (header->fsf_status) { |
1da177e4 | 885 | case FSF_GOOD: |
2c55b750 | 886 | zfcp_dbf_san_res("fsscth1", req); |
7c7dc196 | 887 | ct->status = 0; |
1da177e4 | 888 | break; |
1da177e4 | 889 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 890 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 891 | break; |
1da177e4 | 892 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
893 | switch (header->fsf_status_qual.word[0]){ |
894 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 895 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 896 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 897 | break; |
1da177e4 LT |
898 | } |
899 | break; | |
1da177e4 | 900 | case FSF_ACCESS_DENIED: |
1da177e4 | 901 | break; |
1da177e4 | 902 | case FSF_PORT_BOXED: |
4c571c65 | 903 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 904 | break; |
c41f8cbd | 905 | case FSF_PORT_HANDLE_NOT_VALID: |
ea4a3a6a | 906 | zfcp_erp_adapter_reopen(adapter, 0, "fsscth1"); |
dceab655 | 907 | /* fall through */ |
c41f8cbd | 908 | case FSF_GENERIC_COMMAND_REJECTED: |
1da177e4 | 909 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 910 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 911 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 912 | case FSF_SBAL_MISMATCH: |
c41f8cbd | 913 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
914 | break; |
915 | } | |
916 | ||
917 | skip_fsfstatus: | |
7c7dc196 CS |
918 | if (ct->handler) |
919 | ct->handler(ct->handler_data); | |
c41f8cbd | 920 | } |
1da177e4 | 921 | |
1674b405 CS |
922 | static void zfcp_fsf_setup_ct_els_unchained(struct zfcp_qdio *qdio, |
923 | struct zfcp_qdio_req *q_req, | |
426f6059 CS |
924 | struct scatterlist *sg_req, |
925 | struct scatterlist *sg_resp) | |
926 | { | |
1674b405 CS |
927 | zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_req), sg_req->length); |
928 | zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_resp), sg_resp->length); | |
929 | zfcp_qdio_set_sbale_last(qdio, q_req); | |
426f6059 CS |
930 | } |
931 | ||
39eb7e9a CS |
932 | static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req, |
933 | struct scatterlist *sg_req, | |
01b04759 | 934 | struct scatterlist *sg_resp) |
c41f8cbd | 935 | { |
42428f74 | 936 | struct zfcp_adapter *adapter = req->adapter; |
42428f74 | 937 | u32 feat = adapter->adapter_features; |
c41f8cbd SS |
938 | int bytes; |
939 | ||
39eb7e9a | 940 | if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) { |
1674b405 CS |
941 | if (!zfcp_qdio_sg_one_sbale(sg_req) || |
942 | !zfcp_qdio_sg_one_sbale(sg_resp)) | |
39eb7e9a CS |
943 | return -EOPNOTSUPP; |
944 | ||
1674b405 CS |
945 | zfcp_fsf_setup_ct_els_unchained(adapter->qdio, &req->qdio_req, |
946 | sg_req, sg_resp); | |
426f6059 CS |
947 | return 0; |
948 | } | |
949 | ||
950 | /* use single, unchained SBAL if it can hold the request */ | |
30b6777b | 951 | if (zfcp_qdio_sg_one_sbale(sg_req) && zfcp_qdio_sg_one_sbale(sg_resp)) { |
1674b405 CS |
952 | zfcp_fsf_setup_ct_els_unchained(adapter->qdio, &req->qdio_req, |
953 | sg_req, sg_resp); | |
39eb7e9a CS |
954 | return 0; |
955 | } | |
956 | ||
01b04759 | 957 | bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req, sg_req); |
c41f8cbd | 958 | if (bytes <= 0) |
9072df4d | 959 | return -EIO; |
ef3eb71d | 960 | zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req); |
c41f8cbd | 961 | req->qtcb->bottom.support.req_buf_length = bytes; |
1674b405 | 962 | zfcp_qdio_skip_to_last_sbale(&req->qdio_req); |
c41f8cbd | 963 | |
34c2b712 | 964 | bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req, |
01b04759 | 965 | sg_resp); |
b1a58985 | 966 | req->qtcb->bottom.support.resp_buf_length = bytes; |
c41f8cbd | 967 | if (bytes <= 0) |
9072df4d | 968 | return -EIO; |
ef3eb71d | 969 | zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req); |
98fc4d5c | 970 | |
b1a58985 CS |
971 | return 0; |
972 | } | |
973 | ||
974 | static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req, | |
975 | struct scatterlist *sg_req, | |
976 | struct scatterlist *sg_resp, | |
01b04759 | 977 | unsigned int timeout) |
b1a58985 CS |
978 | { |
979 | int ret; | |
980 | ||
01b04759 | 981 | ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp); |
b1a58985 CS |
982 | if (ret) |
983 | return ret; | |
984 | ||
98fc4d5c | 985 | /* common settings for ct/gs and els requests */ |
51375ee8 SS |
986 | if (timeout > 255) |
987 | timeout = 255; /* max value accepted by hardware */ | |
98fc4d5c | 988 | req->qtcb->bottom.support.service_class = FSF_CLASS_3; |
51375ee8 SS |
989 | req->qtcb->bottom.support.timeout = timeout; |
990 | zfcp_fsf_start_timer(req, (timeout + 10) * HZ); | |
c41f8cbd SS |
991 | |
992 | return 0; | |
1da177e4 LT |
993 | } |
994 | ||
995 | /** | |
c41f8cbd SS |
996 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) |
997 | * @ct: pointer to struct zfcp_send_ct with data for request | |
998 | * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req | |
1da177e4 | 999 | */ |
7c7dc196 | 1000 | int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port, |
51375ee8 SS |
1001 | struct zfcp_fsf_ct_els *ct, mempool_t *pool, |
1002 | unsigned int timeout) | |
1da177e4 | 1003 | { |
564e1c86 | 1004 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
c41f8cbd SS |
1005 | struct zfcp_fsf_req *req; |
1006 | int ret = -EIO; | |
1da177e4 | 1007 | |
44a24cb3 | 1008 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1009 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1010 | goto out; |
1da177e4 | 1011 | |
1674b405 CS |
1012 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC, |
1013 | SBAL_FLAGS0_TYPE_WRITE_READ, pool); | |
09a46c6e | 1014 | |
025270f0 | 1015 | if (IS_ERR(req)) { |
c41f8cbd SS |
1016 | ret = PTR_ERR(req); |
1017 | goto out; | |
3f0ca62a CS |
1018 | } |
1019 | ||
09a46c6e | 1020 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
01b04759 | 1021 | ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp, timeout); |
553448f6 | 1022 | if (ret) |
1da177e4 | 1023 | goto failed_send; |
1da177e4 | 1024 | |
c41f8cbd | 1025 | req->handler = zfcp_fsf_send_ct_handler; |
5ab944f9 | 1026 | req->qtcb->header.port_handle = wka_port->handle; |
c41f8cbd SS |
1027 | req->data = ct; |
1028 | ||
2c55b750 | 1029 | zfcp_dbf_san_req("fssct_1", req, wka_port->d_id); |
1da177e4 | 1030 | |
c41f8cbd SS |
1031 | ret = zfcp_fsf_req_send(req); |
1032 | if (ret) | |
1033 | goto failed_send; | |
1da177e4 | 1034 | |
c41f8cbd | 1035 | goto out; |
1da177e4 | 1036 | |
c41f8cbd SS |
1037 | failed_send: |
1038 | zfcp_fsf_req_free(req); | |
c41f8cbd | 1039 | out: |
44a24cb3 | 1040 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd | 1041 | return ret; |
1da177e4 LT |
1042 | } |
1043 | ||
c41f8cbd | 1044 | static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1045 | { |
7c7dc196 | 1046 | struct zfcp_fsf_ct_els *send_els = req->data; |
c41f8cbd SS |
1047 | struct zfcp_port *port = send_els->port; |
1048 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
1da177e4 | 1049 | |
c41f8cbd | 1050 | send_els->status = -EINVAL; |
1da177e4 | 1051 | |
c41f8cbd | 1052 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
1053 | goto skip_fsfstatus; |
1054 | ||
1055 | switch (header->fsf_status) { | |
1da177e4 | 1056 | case FSF_GOOD: |
2c55b750 | 1057 | zfcp_dbf_san_res("fsselh1", req); |
c41f8cbd | 1058 | send_els->status = 0; |
1da177e4 | 1059 | break; |
1da177e4 | 1060 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 1061 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 1062 | break; |
1da177e4 | 1063 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1064 | switch (header->fsf_status_qual.word[0]){ |
1065 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1066 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1067 | case FSF_SQ_RETRY_IF_POSSIBLE: |
c41f8cbd | 1068 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1069 | break; |
1da177e4 LT |
1070 | } |
1071 | break; | |
1da177e4 | 1072 | case FSF_ELS_COMMAND_REJECTED: |
1da177e4 | 1073 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1074 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1075 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1076 | break; |
1da177e4 | 1077 | case FSF_ACCESS_DENIED: |
a1ca4831 CS |
1078 | if (port) { |
1079 | zfcp_cfdc_port_denied(port, &header->fsf_status_qual); | |
1080 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1081 | } | |
1da177e4 | 1082 | break; |
c41f8cbd SS |
1083 | case FSF_SBAL_MISMATCH: |
1084 | /* should never occure, avoided in zfcp_fsf_send_els */ | |
1085 | /* fall through */ | |
1da177e4 | 1086 | default: |
c41f8cbd | 1087 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1088 | break; |
1089 | } | |
1da177e4 | 1090 | skip_fsfstatus: |
aa551daf | 1091 | if (send_els->handler) |
1da177e4 | 1092 | send_els->handler(send_els->handler_data); |
c41f8cbd | 1093 | } |
1da177e4 | 1094 | |
c41f8cbd SS |
1095 | /** |
1096 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) | |
1097 | * @els: pointer to struct zfcp_send_els with data for the command | |
1098 | */ | |
7c7dc196 | 1099 | int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id, |
51375ee8 | 1100 | struct zfcp_fsf_ct_els *els, unsigned int timeout) |
c41f8cbd SS |
1101 | { |
1102 | struct zfcp_fsf_req *req; | |
7c7dc196 | 1103 | struct zfcp_qdio *qdio = adapter->qdio; |
c41f8cbd SS |
1104 | int ret = -EIO; |
1105 | ||
44a24cb3 | 1106 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1107 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1108 | goto out; |
09a46c6e | 1109 | |
1674b405 CS |
1110 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS, |
1111 | SBAL_FLAGS0_TYPE_WRITE_READ, NULL); | |
09a46c6e | 1112 | |
025270f0 | 1113 | if (IS_ERR(req)) { |
c41f8cbd SS |
1114 | ret = PTR_ERR(req); |
1115 | goto out; | |
1116 | } | |
1117 | ||
09a46c6e | 1118 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
01b04759 SS |
1119 | |
1120 | zfcp_qdio_sbal_limit(qdio, &req->qdio_req, 2); | |
1121 | ||
1122 | ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, timeout); | |
44cc76f2 | 1123 | |
c41f8cbd SS |
1124 | if (ret) |
1125 | goto failed_send; | |
1126 | ||
7c7dc196 | 1127 | hton24(req->qtcb->bottom.support.d_id, d_id); |
c41f8cbd | 1128 | req->handler = zfcp_fsf_send_els_handler; |
c41f8cbd SS |
1129 | req->data = els; |
1130 | ||
2c55b750 | 1131 | zfcp_dbf_san_req("fssels1", req, d_id); |
c41f8cbd | 1132 | |
c41f8cbd SS |
1133 | ret = zfcp_fsf_req_send(req); |
1134 | if (ret) | |
1135 | goto failed_send; | |
1136 | ||
1137 | goto out; | |
1138 | ||
1139 | failed_send: | |
1140 | zfcp_fsf_req_free(req); | |
1141 | out: | |
44a24cb3 | 1142 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd | 1143 | return ret; |
1da177e4 LT |
1144 | } |
1145 | ||
c41f8cbd | 1146 | int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1147 | { |
c41f8cbd | 1148 | struct zfcp_fsf_req *req; |
564e1c86 | 1149 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1150 | int retval = -EIO; |
1151 | ||
44a24cb3 | 1152 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1153 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1154 | goto out; |
09a46c6e | 1155 | |
564e1c86 | 1156 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, |
1674b405 | 1157 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1158 | qdio->adapter->pool.erp_req); |
09a46c6e | 1159 | |
025270f0 | 1160 | if (IS_ERR(req)) { |
c41f8cbd SS |
1161 | retval = PTR_ERR(req); |
1162 | goto out; | |
1da177e4 LT |
1163 | } |
1164 | ||
09a46c6e | 1165 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1166 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1167 | |
c41f8cbd | 1168 | req->qtcb->bottom.config.feature_selection = |
aef4a983 MS |
1169 | FSF_FEATURE_CFDC | |
1170 | FSF_FEATURE_LUN_SHARING | | |
9eb69aff | 1171 | FSF_FEATURE_NOTIFICATION_LOST | |
aef4a983 | 1172 | FSF_FEATURE_UPDATE_ALERT; |
c41f8cbd SS |
1173 | req->erp_action = erp_action; |
1174 | req->handler = zfcp_fsf_exchange_config_data_handler; | |
e60a6d69 | 1175 | erp_action->fsf_req_id = req->req_id; |
1da177e4 | 1176 | |
287ac01a | 1177 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1178 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1179 | if (retval) { |
c41f8cbd | 1180 | zfcp_fsf_req_free(req); |
e60a6d69 | 1181 | erp_action->fsf_req_id = 0; |
1da177e4 | 1182 | } |
c41f8cbd | 1183 | out: |
44a24cb3 | 1184 | spin_unlock_irq(&qdio->req_q_lock); |
52ef11a7 SS |
1185 | return retval; |
1186 | } | |
1da177e4 | 1187 | |
564e1c86 | 1188 | int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio, |
c41f8cbd | 1189 | struct fsf_qtcb_bottom_config *data) |
52ef11a7 | 1190 | { |
c41f8cbd SS |
1191 | struct zfcp_fsf_req *req = NULL; |
1192 | int retval = -EIO; | |
1193 | ||
44a24cb3 | 1194 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1195 | if (zfcp_qdio_sbal_get(qdio)) |
ada81b74 | 1196 | goto out_unlock; |
c41f8cbd | 1197 | |
1674b405 CS |
1198 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, |
1199 | SBAL_FLAGS0_TYPE_READ, NULL); | |
09a46c6e | 1200 | |
025270f0 | 1201 | if (IS_ERR(req)) { |
c41f8cbd | 1202 | retval = PTR_ERR(req); |
ada81b74 | 1203 | goto out_unlock; |
52ef11a7 SS |
1204 | } |
1205 | ||
1674b405 | 1206 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
c41f8cbd | 1207 | req->handler = zfcp_fsf_exchange_config_data_handler; |
52ef11a7 | 1208 | |
c41f8cbd | 1209 | req->qtcb->bottom.config.feature_selection = |
52ef11a7 SS |
1210 | FSF_FEATURE_CFDC | |
1211 | FSF_FEATURE_LUN_SHARING | | |
1212 | FSF_FEATURE_NOTIFICATION_LOST | | |
1213 | FSF_FEATURE_UPDATE_ALERT; | |
1214 | ||
1215 | if (data) | |
c41f8cbd | 1216 | req->data = data; |
52ef11a7 | 1217 | |
c41f8cbd SS |
1218 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
1219 | retval = zfcp_fsf_req_send(req); | |
44a24cb3 | 1220 | spin_unlock_irq(&qdio->req_q_lock); |
553448f6 | 1221 | if (!retval) |
058b8647 | 1222 | wait_for_completion(&req->completion); |
52ef11a7 | 1223 | |
c41f8cbd | 1224 | zfcp_fsf_req_free(req); |
ada81b74 | 1225 | return retval; |
52ef11a7 | 1226 | |
ada81b74 | 1227 | out_unlock: |
44a24cb3 | 1228 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1229 | return retval; |
1230 | } | |
1231 | ||
1da177e4 LT |
1232 | /** |
1233 | * zfcp_fsf_exchange_port_data - request information about local port | |
aef4a983 | 1234 | * @erp_action: ERP action for the adapter for which port data is requested |
c41f8cbd | 1235 | * Returns: 0 on success, error otherwise |
1da177e4 | 1236 | */ |
c41f8cbd | 1237 | int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1238 | { |
564e1c86 | 1239 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd | 1240 | struct zfcp_fsf_req *req; |
c41f8cbd | 1241 | int retval = -EIO; |
1da177e4 | 1242 | |
564e1c86 | 1243 | if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1244 | return -EOPNOTSUPP; |
1da177e4 | 1245 | |
44a24cb3 | 1246 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1247 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1248 | goto out; |
09a46c6e | 1249 | |
564e1c86 | 1250 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, |
1674b405 | 1251 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1252 | qdio->adapter->pool.erp_req); |
09a46c6e | 1253 | |
025270f0 | 1254 | if (IS_ERR(req)) { |
c41f8cbd SS |
1255 | retval = PTR_ERR(req); |
1256 | goto out; | |
aef4a983 MS |
1257 | } |
1258 | ||
09a46c6e | 1259 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1260 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1261 | |
c41f8cbd SS |
1262 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1263 | req->erp_action = erp_action; | |
e60a6d69 | 1264 | erp_action->fsf_req_id = req->req_id; |
52ef11a7 | 1265 | |
287ac01a | 1266 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1267 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1268 | if (retval) { |
c41f8cbd | 1269 | zfcp_fsf_req_free(req); |
e60a6d69 | 1270 | erp_action->fsf_req_id = 0; |
52ef11a7 | 1271 | } |
c41f8cbd | 1272 | out: |
44a24cb3 | 1273 | spin_unlock_irq(&qdio->req_q_lock); |
52ef11a7 SS |
1274 | return retval; |
1275 | } | |
1276 | ||
52ef11a7 SS |
1277 | /** |
1278 | * zfcp_fsf_exchange_port_data_sync - request information about local port | |
564e1c86 | 1279 | * @qdio: pointer to struct zfcp_qdio |
c41f8cbd SS |
1280 | * @data: pointer to struct fsf_qtcb_bottom_port |
1281 | * Returns: 0 on success, error otherwise | |
52ef11a7 | 1282 | */ |
564e1c86 | 1283 | int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio, |
c41f8cbd | 1284 | struct fsf_qtcb_bottom_port *data) |
52ef11a7 | 1285 | { |
c41f8cbd SS |
1286 | struct zfcp_fsf_req *req = NULL; |
1287 | int retval = -EIO; | |
52ef11a7 | 1288 | |
564e1c86 | 1289 | if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1290 | return -EOPNOTSUPP; |
52ef11a7 | 1291 | |
44a24cb3 | 1292 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1293 | if (zfcp_qdio_sbal_get(qdio)) |
ada81b74 | 1294 | goto out_unlock; |
c41f8cbd | 1295 | |
1674b405 CS |
1296 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, |
1297 | SBAL_FLAGS0_TYPE_READ, NULL); | |
09a46c6e | 1298 | |
025270f0 | 1299 | if (IS_ERR(req)) { |
c41f8cbd | 1300 | retval = PTR_ERR(req); |
ada81b74 | 1301 | goto out_unlock; |
1da177e4 LT |
1302 | } |
1303 | ||
52ef11a7 | 1304 | if (data) |
c41f8cbd | 1305 | req->data = data; |
52ef11a7 | 1306 | |
1674b405 | 1307 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
52ef11a7 | 1308 | |
c41f8cbd SS |
1309 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1310 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1311 | retval = zfcp_fsf_req_send(req); | |
44a24cb3 | 1312 | spin_unlock_irq(&qdio->req_q_lock); |
ada81b74 | 1313 | |
553448f6 | 1314 | if (!retval) |
058b8647 SS |
1315 | wait_for_completion(&req->completion); |
1316 | ||
c41f8cbd | 1317 | zfcp_fsf_req_free(req); |
1da177e4 | 1318 | |
1da177e4 | 1319 | return retval; |
ada81b74 CS |
1320 | |
1321 | out_unlock: | |
44a24cb3 | 1322 | spin_unlock_irq(&qdio->req_q_lock); |
ada81b74 | 1323 | return retval; |
1da177e4 LT |
1324 | } |
1325 | ||
c41f8cbd | 1326 | static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1327 | { |
c41f8cbd SS |
1328 | struct zfcp_port *port = req->data; |
1329 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
9d05ce2c | 1330 | struct fc_els_flogi *plogi; |
1da177e4 | 1331 | |
c41f8cbd | 1332 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
a17c5855 | 1333 | goto out; |
1da177e4 | 1334 | |
1da177e4 | 1335 | switch (header->fsf_status) { |
1da177e4 | 1336 | case FSF_PORT_ALREADY_OPEN: |
1da177e4 | 1337 | break; |
1da177e4 | 1338 | case FSF_ACCESS_DENIED: |
a1ca4831 CS |
1339 | zfcp_cfdc_port_denied(port, &header->fsf_status_qual); |
1340 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1341 | break; |
1da177e4 | 1342 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: |
c41f8cbd | 1343 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 1344 | "Not enough FCP adapter resources to open " |
7ba58c9c SS |
1345 | "remote port 0x%016Lx\n", |
1346 | (unsigned long long)port->wwpn); | |
edaed859 SS |
1347 | zfcp_erp_set_port_status(port, |
1348 | ZFCP_STATUS_COMMON_ERP_FAILED); | |
c41f8cbd | 1349 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1350 | break; |
1da177e4 | 1351 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1352 | switch (header->fsf_status_qual.word[0]) { |
1353 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1354 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1355 | case FSF_SQ_NO_RETRY_POSSIBLE: |
c41f8cbd | 1356 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1357 | break; |
1358 | } | |
1359 | break; | |
1da177e4 | 1360 | case FSF_GOOD: |
1da177e4 | 1361 | port->handle = header->port_handle; |
1da177e4 LT |
1362 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN | |
1363 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
d736a27b AH |
1364 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
1365 | ZFCP_STATUS_COMMON_ACCESS_BOXED, | |
1366 | &port->status); | |
1da177e4 LT |
1367 | /* check whether D_ID has changed during open */ |
1368 | /* | |
1369 | * FIXME: This check is not airtight, as the FCP channel does | |
1370 | * not monitor closures of target port connections caused on | |
1371 | * the remote side. Thus, they might miss out on invalidating | |
1372 | * locally cached WWPNs (and other N_Port parameters) of gone | |
1373 | * target ports. So, our heroic attempt to make things safe | |
1374 | * could be undermined by 'open port' response data tagged with | |
1375 | * obsolete WWPNs. Another reason to monitor potential | |
1376 | * connection closures ourself at least (by interpreting | |
1377 | * incoming ELS' and unsolicited status). It just crosses my | |
1378 | * mind that one should be able to cross-check by means of | |
1379 | * another GID_PN straight after a port has been opened. | |
1380 | * Alternately, an ADISC/PDISC ELS should suffice, as well. | |
1381 | */ | |
9d05ce2c | 1382 | plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els; |
39eb7e9a | 1383 | if (req->qtcb->bottom.support.els1_length >= |
9d05ce2c | 1384 | FSF_PLOGI_MIN_LEN) |
c41f8cbd | 1385 | zfcp_fc_plogi_evaluate(port, plogi); |
1da177e4 | 1386 | break; |
1da177e4 | 1387 | case FSF_UNKNOWN_OP_SUBTYPE: |
c41f8cbd | 1388 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1389 | break; |
1390 | } | |
a17c5855 MP |
1391 | |
1392 | out: | |
615f59e0 | 1393 | put_device(&port->dev); |
1da177e4 LT |
1394 | } |
1395 | ||
c41f8cbd SS |
1396 | /** |
1397 | * zfcp_fsf_open_port - create and send open port request | |
1398 | * @erp_action: pointer to struct zfcp_erp_action | |
1399 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1400 | */ |
c41f8cbd | 1401 | int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1402 | { |
564e1c86 | 1403 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
a17c5855 | 1404 | struct zfcp_port *port = erp_action->port; |
564e1c86 | 1405 | struct zfcp_fsf_req *req; |
c41f8cbd SS |
1406 | int retval = -EIO; |
1407 | ||
44a24cb3 | 1408 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1409 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd SS |
1410 | goto out; |
1411 | ||
564e1c86 | 1412 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID, |
1674b405 | 1413 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1414 | qdio->adapter->pool.erp_req); |
09a46c6e | 1415 | |
025270f0 | 1416 | if (IS_ERR(req)) { |
c41f8cbd | 1417 | retval = PTR_ERR(req); |
1da177e4 | 1418 | goto out; |
c41f8cbd | 1419 | } |
1da177e4 | 1420 | |
09a46c6e | 1421 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1422 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1423 | |
c41f8cbd | 1424 | req->handler = zfcp_fsf_open_port_handler; |
800c0cad | 1425 | hton24(req->qtcb->bottom.support.d_id, port->d_id); |
a17c5855 | 1426 | req->data = port; |
c41f8cbd | 1427 | req->erp_action = erp_action; |
e60a6d69 | 1428 | erp_action->fsf_req_id = req->req_id; |
615f59e0 | 1429 | get_device(&port->dev); |
c41f8cbd | 1430 | |
287ac01a | 1431 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1432 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1433 | if (retval) { |
c41f8cbd | 1434 | zfcp_fsf_req_free(req); |
e60a6d69 | 1435 | erp_action->fsf_req_id = 0; |
615f59e0 | 1436 | put_device(&port->dev); |
1da177e4 | 1437 | } |
c41f8cbd | 1438 | out: |
44a24cb3 | 1439 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1440 | return retval; |
1441 | } | |
1442 | ||
c41f8cbd | 1443 | static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1444 | { |
c41f8cbd | 1445 | struct zfcp_port *port = req->data; |
1da177e4 | 1446 | |
c41f8cbd | 1447 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1448 | return; |
1da177e4 | 1449 | |
c41f8cbd | 1450 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1451 | case FSF_PORT_HANDLE_NOT_VALID: |
ea4a3a6a | 1452 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1"); |
c41f8cbd | 1453 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1454 | break; |
1da177e4 | 1455 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 | 1456 | break; |
1da177e4 | 1457 | case FSF_GOOD: |
edaed859 | 1458 | zfcp_erp_clear_port_status(port, ZFCP_STATUS_COMMON_OPEN); |
1da177e4 | 1459 | break; |
1da177e4 | 1460 | } |
1da177e4 LT |
1461 | } |
1462 | ||
c41f8cbd SS |
1463 | /** |
1464 | * zfcp_fsf_close_port - create and send close port request | |
1465 | * @erp_action: pointer to struct zfcp_erp_action | |
1466 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1467 | */ |
c41f8cbd | 1468 | int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1469 | { |
564e1c86 | 1470 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1471 | struct zfcp_fsf_req *req; |
1472 | int retval = -EIO; | |
1473 | ||
44a24cb3 | 1474 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1475 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd SS |
1476 | goto out; |
1477 | ||
564e1c86 | 1478 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT, |
1674b405 | 1479 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1480 | qdio->adapter->pool.erp_req); |
09a46c6e | 1481 | |
025270f0 | 1482 | if (IS_ERR(req)) { |
c41f8cbd | 1483 | retval = PTR_ERR(req); |
1da177e4 | 1484 | goto out; |
c41f8cbd | 1485 | } |
1da177e4 | 1486 | |
09a46c6e | 1487 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1488 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1489 | |
c41f8cbd SS |
1490 | req->handler = zfcp_fsf_close_port_handler; |
1491 | req->data = erp_action->port; | |
1492 | req->erp_action = erp_action; | |
1493 | req->qtcb->header.port_handle = erp_action->port->handle; | |
e60a6d69 | 1494 | erp_action->fsf_req_id = req->req_id; |
c41f8cbd | 1495 | |
287ac01a | 1496 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1497 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1498 | if (retval) { |
c41f8cbd | 1499 | zfcp_fsf_req_free(req); |
e60a6d69 | 1500 | erp_action->fsf_req_id = 0; |
1da177e4 | 1501 | } |
c41f8cbd | 1502 | out: |
44a24cb3 | 1503 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1504 | return retval; |
1505 | } | |
1506 | ||
5ab944f9 SS |
1507 | static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req) |
1508 | { | |
bd0072ec | 1509 | struct zfcp_fc_wka_port *wka_port = req->data; |
5ab944f9 SS |
1510 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1511 | ||
1512 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
bd0072ec | 1513 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 SS |
1514 | goto out; |
1515 | } | |
1516 | ||
1517 | switch (header->fsf_status) { | |
1518 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: | |
1519 | dev_warn(&req->adapter->ccw_device->dev, | |
1520 | "Opening WKA port 0x%x failed\n", wka_port->d_id); | |
dceab655 | 1521 | /* fall through */ |
5ab944f9 SS |
1522 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1523 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
dceab655 | 1524 | /* fall through */ |
5ab944f9 | 1525 | case FSF_ACCESS_DENIED: |
bd0072ec | 1526 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 | 1527 | break; |
5ab944f9 SS |
1528 | case FSF_GOOD: |
1529 | wka_port->handle = header->port_handle; | |
27f492cc SS |
1530 | /* fall through */ |
1531 | case FSF_PORT_ALREADY_OPEN: | |
bd0072ec | 1532 | wka_port->status = ZFCP_FC_WKA_PORT_ONLINE; |
5ab944f9 SS |
1533 | } |
1534 | out: | |
1535 | wake_up(&wka_port->completion_wq); | |
1536 | } | |
1537 | ||
1538 | /** | |
1539 | * zfcp_fsf_open_wka_port - create and send open wka-port request | |
bd0072ec | 1540 | * @wka_port: pointer to struct zfcp_fc_wka_port |
5ab944f9 SS |
1541 | * Returns: 0 on success, error otherwise |
1542 | */ | |
bd0072ec | 1543 | int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port) |
5ab944f9 | 1544 | { |
564e1c86 | 1545 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
5ab944f9 SS |
1546 | struct zfcp_fsf_req *req; |
1547 | int retval = -EIO; | |
1548 | ||
44a24cb3 | 1549 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1550 | if (zfcp_qdio_sbal_get(qdio)) |
5ab944f9 SS |
1551 | goto out; |
1552 | ||
564e1c86 | 1553 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID, |
1674b405 | 1554 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1555 | qdio->adapter->pool.erp_req); |
09a46c6e | 1556 | |
4e7d7af4 | 1557 | if (IS_ERR(req)) { |
5ab944f9 SS |
1558 | retval = PTR_ERR(req); |
1559 | goto out; | |
1560 | } | |
1561 | ||
09a46c6e | 1562 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1563 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
5ab944f9 SS |
1564 | |
1565 | req->handler = zfcp_fsf_open_wka_port_handler; | |
800c0cad | 1566 | hton24(req->qtcb->bottom.support.d_id, wka_port->d_id); |
5ab944f9 SS |
1567 | req->data = wka_port; |
1568 | ||
1569 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1570 | retval = zfcp_fsf_req_send(req); | |
1571 | if (retval) | |
1572 | zfcp_fsf_req_free(req); | |
1573 | out: | |
44a24cb3 | 1574 | spin_unlock_irq(&qdio->req_q_lock); |
5ab944f9 SS |
1575 | return retval; |
1576 | } | |
1577 | ||
1578 | static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req) | |
1579 | { | |
bd0072ec | 1580 | struct zfcp_fc_wka_port *wka_port = req->data; |
5ab944f9 SS |
1581 | |
1582 | if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) { | |
1583 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
ea4a3a6a | 1584 | zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1"); |
5ab944f9 SS |
1585 | } |
1586 | ||
bd0072ec | 1587 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 SS |
1588 | wake_up(&wka_port->completion_wq); |
1589 | } | |
1590 | ||
1591 | /** | |
1592 | * zfcp_fsf_close_wka_port - create and send close wka port request | |
bd0072ec | 1593 | * @wka_port: WKA port to open |
5ab944f9 SS |
1594 | * Returns: 0 on success, error otherwise |
1595 | */ | |
bd0072ec | 1596 | int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port) |
5ab944f9 | 1597 | { |
564e1c86 | 1598 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
5ab944f9 SS |
1599 | struct zfcp_fsf_req *req; |
1600 | int retval = -EIO; | |
1601 | ||
44a24cb3 | 1602 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1603 | if (zfcp_qdio_sbal_get(qdio)) |
5ab944f9 SS |
1604 | goto out; |
1605 | ||
564e1c86 | 1606 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT, |
1674b405 | 1607 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1608 | qdio->adapter->pool.erp_req); |
09a46c6e | 1609 | |
4e7d7af4 | 1610 | if (IS_ERR(req)) { |
5ab944f9 SS |
1611 | retval = PTR_ERR(req); |
1612 | goto out; | |
1613 | } | |
1614 | ||
09a46c6e | 1615 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1616 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
5ab944f9 SS |
1617 | |
1618 | req->handler = zfcp_fsf_close_wka_port_handler; | |
1619 | req->data = wka_port; | |
1620 | req->qtcb->header.port_handle = wka_port->handle; | |
1621 | ||
1622 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1623 | retval = zfcp_fsf_req_send(req); | |
1624 | if (retval) | |
1625 | zfcp_fsf_req_free(req); | |
1626 | out: | |
44a24cb3 | 1627 | spin_unlock_irq(&qdio->req_q_lock); |
5ab944f9 SS |
1628 | return retval; |
1629 | } | |
1630 | ||
c41f8cbd | 1631 | static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1632 | { |
c41f8cbd SS |
1633 | struct zfcp_port *port = req->data; |
1634 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
b62a8d9b | 1635 | struct scsi_device *sdev; |
1da177e4 | 1636 | |
c41f8cbd | 1637 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
a5b11dda | 1638 | return; |
1da177e4 | 1639 | |
1da177e4 | 1640 | switch (header->fsf_status) { |
1da177e4 | 1641 | case FSF_PORT_HANDLE_NOT_VALID: |
ea4a3a6a | 1642 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1"); |
c41f8cbd | 1643 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1644 | break; |
1da177e4 | 1645 | case FSF_ACCESS_DENIED: |
a1ca4831 | 1646 | zfcp_cfdc_port_denied(port, &header->fsf_status_qual); |
1da177e4 | 1647 | break; |
1da177e4 | 1648 | case FSF_PORT_BOXED: |
5c815d15 CS |
1649 | /* can't use generic zfcp_erp_modify_port_status because |
1650 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */ | |
1651 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
b62a8d9b CS |
1652 | shost_for_each_device(sdev, port->adapter->scsi_host) |
1653 | if (sdev_to_zfcp(sdev)->port == port) | |
1654 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, | |
1655 | &sdev_to_zfcp(sdev)->status); | |
edaed859 SS |
1656 | zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ACCESS_BOXED); |
1657 | zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, | |
ea4a3a6a | 1658 | "fscpph2"); |
4c571c65 | 1659 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1660 | break; |
1da177e4 | 1661 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1662 | switch (header->fsf_status_qual.word[0]) { |
1663 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
c41f8cbd | 1664 | /* fall through */ |
1da177e4 | 1665 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1666 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1667 | break; |
1da177e4 LT |
1668 | } |
1669 | break; | |
1da177e4 | 1670 | case FSF_GOOD: |
1da177e4 LT |
1671 | /* can't use generic zfcp_erp_modify_port_status because |
1672 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port | |
1673 | */ | |
1674 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
b62a8d9b CS |
1675 | shost_for_each_device(sdev, port->adapter->scsi_host) |
1676 | if (sdev_to_zfcp(sdev)->port == port) | |
1677 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, | |
1678 | &sdev_to_zfcp(sdev)->status); | |
1da177e4 | 1679 | break; |
1da177e4 | 1680 | } |
1da177e4 LT |
1681 | } |
1682 | ||
c41f8cbd SS |
1683 | /** |
1684 | * zfcp_fsf_close_physical_port - close physical port | |
1685 | * @erp_action: pointer to struct zfcp_erp_action | |
1686 | * Returns: 0 on success | |
1da177e4 | 1687 | */ |
c41f8cbd | 1688 | int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1689 | { |
564e1c86 | 1690 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1691 | struct zfcp_fsf_req *req; |
1692 | int retval = -EIO; | |
1693 | ||
44a24cb3 | 1694 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1695 | if (zfcp_qdio_sbal_get(qdio)) |
1da177e4 | 1696 | goto out; |
1da177e4 | 1697 | |
564e1c86 | 1698 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT, |
1674b405 | 1699 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1700 | qdio->adapter->pool.erp_req); |
09a46c6e | 1701 | |
025270f0 | 1702 | if (IS_ERR(req)) { |
c41f8cbd SS |
1703 | retval = PTR_ERR(req); |
1704 | goto out; | |
1705 | } | |
1da177e4 | 1706 | |
09a46c6e | 1707 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1708 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1709 | |
c41f8cbd SS |
1710 | req->data = erp_action->port; |
1711 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1712 | req->erp_action = erp_action; | |
1713 | req->handler = zfcp_fsf_close_physical_port_handler; | |
e60a6d69 | 1714 | erp_action->fsf_req_id = req->req_id; |
c41f8cbd | 1715 | |
287ac01a | 1716 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1717 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1718 | if (retval) { |
c41f8cbd | 1719 | zfcp_fsf_req_free(req); |
e60a6d69 | 1720 | erp_action->fsf_req_id = 0; |
1da177e4 | 1721 | } |
c41f8cbd | 1722 | out: |
44a24cb3 | 1723 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1724 | return retval; |
1725 | } | |
1726 | ||
b62a8d9b | 1727 | static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1728 | { |
c41f8cbd | 1729 | struct zfcp_adapter *adapter = req->adapter; |
b62a8d9b CS |
1730 | struct scsi_device *sdev = req->data; |
1731 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); | |
c41f8cbd SS |
1732 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1733 | struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support; | |
1da177e4 | 1734 | |
c41f8cbd | 1735 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1736 | return; |
1da177e4 | 1737 | |
1da177e4 | 1738 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
b64ddf96 | 1739 | ZFCP_STATUS_COMMON_ACCESS_BOXED | |
b62a8d9b CS |
1740 | ZFCP_STATUS_LUN_SHARED | |
1741 | ZFCP_STATUS_LUN_READONLY, | |
1742 | &zfcp_sdev->status); | |
1da177e4 | 1743 | |
1da177e4 LT |
1744 | switch (header->fsf_status) { |
1745 | ||
1746 | case FSF_PORT_HANDLE_NOT_VALID: | |
ea4a3a6a | 1747 | zfcp_erp_adapter_reopen(adapter, 0, "fsouh_1"); |
c41f8cbd | 1748 | /* fall through */ |
1da177e4 | 1749 | case FSF_LUN_ALREADY_OPEN: |
1da177e4 | 1750 | break; |
1da177e4 | 1751 | case FSF_ACCESS_DENIED: |
a1ca4831 CS |
1752 | zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual); |
1753 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1754 | break; |
1da177e4 | 1755 | case FSF_PORT_BOXED: |
edaed859 SS |
1756 | zfcp_erp_set_port_status(zfcp_sdev->port, |
1757 | ZFCP_STATUS_COMMON_ACCESS_BOXED); | |
1758 | zfcp_erp_port_reopen(zfcp_sdev->port, | |
ea4a3a6a | 1759 | ZFCP_STATUS_COMMON_ERP_FAILED, "fsouh_2"); |
4c571c65 | 1760 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1761 | break; |
1da177e4 | 1762 | case FSF_LUN_SHARING_VIOLATION: |
a1ca4831 | 1763 | zfcp_cfdc_lun_shrng_vltn(sdev, &header->fsf_status_qual); |
c41f8cbd | 1764 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1765 | break; |
1da177e4 | 1766 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: |
c41f8cbd | 1767 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1768 | "No handle is available for LUN " |
1769 | "0x%016Lx on port 0x%016Lx\n", | |
b62a8d9b CS |
1770 | (unsigned long long)zfcp_scsi_dev_lun(sdev), |
1771 | (unsigned long long)zfcp_sdev->port->wwpn); | |
edaed859 | 1772 | zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ERP_FAILED); |
c41f8cbd SS |
1773 | /* fall through */ |
1774 | case FSF_INVALID_COMMAND_OPTION: | |
1775 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1776 | break; |
1da177e4 | 1777 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1778 | switch (header->fsf_status_qual.word[0]) { |
1779 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
b62a8d9b | 1780 | zfcp_fc_test_link(zfcp_sdev->port); |
c41f8cbd | 1781 | /* fall through */ |
1da177e4 | 1782 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1783 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1784 | break; |
1da177e4 LT |
1785 | } |
1786 | break; | |
1787 | ||
1da177e4 | 1788 | case FSF_GOOD: |
b62a8d9b CS |
1789 | zfcp_sdev->lun_handle = header->lun_handle; |
1790 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status); | |
a1ca4831 | 1791 | zfcp_cfdc_open_lun_eval(sdev, bottom); |
1da177e4 | 1792 | break; |
1da177e4 | 1793 | } |
1da177e4 LT |
1794 | } |
1795 | ||
c41f8cbd | 1796 | /** |
b62a8d9b | 1797 | * zfcp_fsf_open_lun - open LUN |
c41f8cbd SS |
1798 | * @erp_action: pointer to struct zfcp_erp_action |
1799 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1800 | */ |
b62a8d9b | 1801 | int zfcp_fsf_open_lun(struct zfcp_erp_action *erp_action) |
1da177e4 | 1802 | { |
c41f8cbd | 1803 | struct zfcp_adapter *adapter = erp_action->adapter; |
564e1c86 | 1804 | struct zfcp_qdio *qdio = adapter->qdio; |
c41f8cbd SS |
1805 | struct zfcp_fsf_req *req; |
1806 | int retval = -EIO; | |
1807 | ||
44a24cb3 | 1808 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1809 | if (zfcp_qdio_sbal_get(qdio)) |
1da177e4 | 1810 | goto out; |
1da177e4 | 1811 | |
564e1c86 | 1812 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN, |
1674b405 | 1813 | SBAL_FLAGS0_TYPE_READ, |
a4623c46 | 1814 | adapter->pool.erp_req); |
09a46c6e | 1815 | |
025270f0 | 1816 | if (IS_ERR(req)) { |
c41f8cbd SS |
1817 | retval = PTR_ERR(req); |
1818 | goto out; | |
1819 | } | |
1820 | ||
09a46c6e | 1821 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1822 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1823 | |
c41f8cbd | 1824 | req->qtcb->header.port_handle = erp_action->port->handle; |
b62a8d9b CS |
1825 | req->qtcb->bottom.support.fcp_lun = zfcp_scsi_dev_lun(erp_action->sdev); |
1826 | req->handler = zfcp_fsf_open_lun_handler; | |
1827 | req->data = erp_action->sdev; | |
c41f8cbd | 1828 | req->erp_action = erp_action; |
e60a6d69 | 1829 | erp_action->fsf_req_id = req->req_id; |
c41f8cbd SS |
1830 | |
1831 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) | |
1832 | req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING; | |
1833 | ||
287ac01a | 1834 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1835 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1836 | if (retval) { |
c41f8cbd | 1837 | zfcp_fsf_req_free(req); |
e60a6d69 | 1838 | erp_action->fsf_req_id = 0; |
1da177e4 | 1839 | } |
c41f8cbd | 1840 | out: |
44a24cb3 | 1841 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1842 | return retval; |
1843 | } | |
1844 | ||
b62a8d9b | 1845 | static void zfcp_fsf_close_lun_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1846 | { |
b62a8d9b CS |
1847 | struct scsi_device *sdev = req->data; |
1848 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); | |
1da177e4 | 1849 | |
c41f8cbd | 1850 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1851 | return; |
1da177e4 | 1852 | |
c41f8cbd | 1853 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1854 | case FSF_PORT_HANDLE_NOT_VALID: |
ea4a3a6a | 1855 | zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fscuh_1"); |
c41f8cbd | 1856 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1857 | break; |
1da177e4 | 1858 | case FSF_LUN_HANDLE_NOT_VALID: |
ea4a3a6a | 1859 | zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fscuh_2"); |
c41f8cbd | 1860 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1861 | break; |
1da177e4 | 1862 | case FSF_PORT_BOXED: |
edaed859 SS |
1863 | zfcp_erp_set_port_status(zfcp_sdev->port, |
1864 | ZFCP_STATUS_COMMON_ACCESS_BOXED); | |
1865 | zfcp_erp_port_reopen(zfcp_sdev->port, | |
ea4a3a6a | 1866 | ZFCP_STATUS_COMMON_ERP_FAILED, "fscuh_3"); |
4c571c65 | 1867 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1868 | break; |
1da177e4 | 1869 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 1870 | switch (req->qtcb->header.fsf_status_qual.word[0]) { |
1da177e4 | 1871 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
b62a8d9b | 1872 | zfcp_fc_test_link(zfcp_sdev->port); |
c41f8cbd | 1873 | /* fall through */ |
1da177e4 | 1874 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1875 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1876 | break; |
1877 | } | |
1878 | break; | |
1da177e4 | 1879 | case FSF_GOOD: |
b62a8d9b | 1880 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status); |
1da177e4 | 1881 | break; |
1da177e4 | 1882 | } |
1da177e4 LT |
1883 | } |
1884 | ||
1885 | /** | |
b62a8d9b CS |
1886 | * zfcp_fsf_close_LUN - close LUN |
1887 | * @erp_action: pointer to erp_action triggering the "close LUN" | |
c41f8cbd | 1888 | * Returns: 0 on success, error otherwise |
1da177e4 | 1889 | */ |
b62a8d9b | 1890 | int zfcp_fsf_close_lun(struct zfcp_erp_action *erp_action) |
1da177e4 | 1891 | { |
564e1c86 | 1892 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
b62a8d9b | 1893 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(erp_action->sdev); |
c41f8cbd SS |
1894 | struct zfcp_fsf_req *req; |
1895 | int retval = -EIO; | |
1da177e4 | 1896 | |
44a24cb3 | 1897 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1898 | if (zfcp_qdio_sbal_get(qdio)) |
1da177e4 | 1899 | goto out; |
09a46c6e | 1900 | |
564e1c86 | 1901 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN, |
1674b405 | 1902 | SBAL_FLAGS0_TYPE_READ, |
564e1c86 | 1903 | qdio->adapter->pool.erp_req); |
09a46c6e | 1904 | |
025270f0 | 1905 | if (IS_ERR(req)) { |
c41f8cbd SS |
1906 | retval = PTR_ERR(req); |
1907 | goto out; | |
1908 | } | |
1da177e4 | 1909 | |
09a46c6e | 1910 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1911 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1912 | |
c41f8cbd | 1913 | req->qtcb->header.port_handle = erp_action->port->handle; |
b62a8d9b CS |
1914 | req->qtcb->header.lun_handle = zfcp_sdev->lun_handle; |
1915 | req->handler = zfcp_fsf_close_lun_handler; | |
1916 | req->data = erp_action->sdev; | |
c41f8cbd | 1917 | req->erp_action = erp_action; |
e60a6d69 | 1918 | erp_action->fsf_req_id = req->req_id; |
fdf23452 | 1919 | |
287ac01a | 1920 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
1921 | retval = zfcp_fsf_req_send(req); |
1922 | if (retval) { | |
1923 | zfcp_fsf_req_free(req); | |
e60a6d69 | 1924 | erp_action->fsf_req_id = 0; |
c41f8cbd SS |
1925 | } |
1926 | out: | |
44a24cb3 | 1927 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd | 1928 | return retval; |
1da177e4 LT |
1929 | } |
1930 | ||
c9615858 CS |
1931 | static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat) |
1932 | { | |
1933 | lat_rec->sum += lat; | |
c41f8cbd SS |
1934 | lat_rec->min = min(lat_rec->min, lat); |
1935 | lat_rec->max = max(lat_rec->max, lat); | |
c9615858 CS |
1936 | } |
1937 | ||
d9742b42 | 1938 | static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi) |
c9615858 | 1939 | { |
d9742b42 CS |
1940 | struct fsf_qual_latency_info *lat_in; |
1941 | struct latency_cont *lat = NULL; | |
b62a8d9b | 1942 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scsi->device); |
d9742b42 CS |
1943 | struct zfcp_blk_drv_data blktrc; |
1944 | int ticks = req->adapter->timer_ticks; | |
c9615858 | 1945 | |
d9742b42 | 1946 | lat_in = &req->qtcb->prefix.prot_status_qual.latency_info; |
c9615858 | 1947 | |
d9742b42 CS |
1948 | blktrc.flags = 0; |
1949 | blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC; | |
1950 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
1951 | blktrc.flags |= ZFCP_BLK_REQ_ERROR; | |
706eca49 | 1952 | blktrc.inb_usage = 0; |
34c2b712 | 1953 | blktrc.outb_usage = req->qdio_req.qdio_outb_usage; |
d9742b42 | 1954 | |
5bbf297c CS |
1955 | if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA && |
1956 | !(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
d9742b42 CS |
1957 | blktrc.flags |= ZFCP_BLK_LAT_VALID; |
1958 | blktrc.channel_lat = lat_in->channel_lat * ticks; | |
1959 | blktrc.fabric_lat = lat_in->fabric_lat * ticks; | |
1960 | ||
1961 | switch (req->qtcb->bottom.io.data_direction) { | |
ef3eb71d FB |
1962 | case FSF_DATADIR_DIF_READ_STRIP: |
1963 | case FSF_DATADIR_DIF_READ_CONVERT: | |
d9742b42 | 1964 | case FSF_DATADIR_READ: |
b62a8d9b | 1965 | lat = &zfcp_sdev->latencies.read; |
d9742b42 | 1966 | break; |
ef3eb71d FB |
1967 | case FSF_DATADIR_DIF_WRITE_INSERT: |
1968 | case FSF_DATADIR_DIF_WRITE_CONVERT: | |
d9742b42 | 1969 | case FSF_DATADIR_WRITE: |
b62a8d9b | 1970 | lat = &zfcp_sdev->latencies.write; |
d9742b42 CS |
1971 | break; |
1972 | case FSF_DATADIR_CMND: | |
b62a8d9b | 1973 | lat = &zfcp_sdev->latencies.cmd; |
d9742b42 CS |
1974 | break; |
1975 | } | |
1da177e4 | 1976 | |
d9742b42 | 1977 | if (lat) { |
b62a8d9b | 1978 | spin_lock(&zfcp_sdev->latencies.lock); |
d9742b42 CS |
1979 | zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat); |
1980 | zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat); | |
1981 | lat->counter++; | |
b62a8d9b | 1982 | spin_unlock(&zfcp_sdev->latencies.lock); |
d9742b42 | 1983 | } |
0997f1c5 | 1984 | } |
0997f1c5 | 1985 | |
d9742b42 CS |
1986 | blk_add_driver_data(scsi->request->q, scsi->request, &blktrc, |
1987 | sizeof(blktrc)); | |
0997f1c5 | 1988 | } |
0997f1c5 | 1989 | |
c61b536c | 1990 | static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req *req) |
c41f8cbd | 1991 | { |
b62a8d9b CS |
1992 | struct scsi_cmnd *scmnd = req->data; |
1993 | struct scsi_device *sdev = scmnd->device; | |
1994 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); | |
c41f8cbd SS |
1995 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1996 | ||
c41f8cbd | 1997 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
c61b536c | 1998 | return; |
1da177e4 | 1999 | |
c41f8cbd SS |
2000 | switch (header->fsf_status) { |
2001 | case FSF_HANDLE_MISMATCH: | |
2002 | case FSF_PORT_HANDLE_NOT_VALID: | |
ea4a3a6a | 2003 | zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fssfch1"); |
c41f8cbd SS |
2004 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2005 | break; | |
2006 | case FSF_FCPLUN_NOT_VALID: | |
2007 | case FSF_LUN_HANDLE_NOT_VALID: | |
ea4a3a6a | 2008 | zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fssfch2"); |
c41f8cbd | 2009 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2010 | break; |
c41f8cbd SS |
2011 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
2012 | zfcp_fsf_class_not_supp(req); | |
1da177e4 | 2013 | break; |
c41f8cbd | 2014 | case FSF_ACCESS_DENIED: |
a1ca4831 CS |
2015 | zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual); |
2016 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
c41f8cbd SS |
2017 | break; |
2018 | case FSF_DIRECTION_INDICATOR_NOT_VALID: | |
2019 | dev_err(&req->adapter->ccw_device->dev, | |
b62a8d9b | 2020 | "Incorrect direction %d, LUN 0x%016Lx on port " |
ff3b24fa | 2021 | "0x%016Lx closed\n", |
c41f8cbd | 2022 | req->qtcb->bottom.io.data_direction, |
b62a8d9b CS |
2023 | (unsigned long long)zfcp_scsi_dev_lun(sdev), |
2024 | (unsigned long long)zfcp_sdev->port->wwpn); | |
2025 | zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0, | |
ea4a3a6a | 2026 | "fssfch3"); |
c41f8cbd SS |
2027 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2028 | break; | |
2029 | case FSF_CMND_LENGTH_NOT_VALID: | |
2030 | dev_err(&req->adapter->ccw_device->dev, | |
b62a8d9b | 2031 | "Incorrect CDB length %d, LUN 0x%016Lx on " |
ff3b24fa | 2032 | "port 0x%016Lx closed\n", |
c41f8cbd | 2033 | req->qtcb->bottom.io.fcp_cmnd_length, |
b62a8d9b CS |
2034 | (unsigned long long)zfcp_scsi_dev_lun(sdev), |
2035 | (unsigned long long)zfcp_sdev->port->wwpn); | |
2036 | zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0, | |
ea4a3a6a | 2037 | "fssfch4"); |
c41f8cbd SS |
2038 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2039 | break; | |
2040 | case FSF_PORT_BOXED: | |
edaed859 SS |
2041 | zfcp_erp_set_port_status(zfcp_sdev->port, |
2042 | ZFCP_STATUS_COMMON_ACCESS_BOXED); | |
2043 | zfcp_erp_port_reopen(zfcp_sdev->port, | |
ea4a3a6a | 2044 | ZFCP_STATUS_COMMON_ERP_FAILED, "fssfch5"); |
4c571c65 | 2045 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
2046 | break; |
2047 | case FSF_LUN_BOXED: | |
edaed859 SS |
2048 | zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED); |
2049 | zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, | |
ea4a3a6a | 2050 | "fssfch6"); |
4c571c65 | 2051 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
2052 | break; |
2053 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
2054 | if (header->fsf_status_qual.word[0] == | |
2055 | FSF_SQ_INVOKE_LINK_TEST_PROCEDURE) | |
b62a8d9b | 2056 | zfcp_fc_test_link(zfcp_sdev->port); |
c41f8cbd | 2057 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2058 | break; |
1da177e4 | 2059 | } |
c61b536c CS |
2060 | } |
2061 | ||
2062 | static void zfcp_fsf_fcp_cmnd_handler(struct zfcp_fsf_req *req) | |
2063 | { | |
2064 | struct scsi_cmnd *scpnt; | |
2065 | struct fcp_resp_with_ext *fcp_rsp; | |
2066 | unsigned long flags; | |
2067 | ||
c61b536c CS |
2068 | read_lock_irqsave(&req->adapter->abort_lock, flags); |
2069 | ||
2070 | scpnt = req->data; | |
2071 | if (unlikely(!scpnt)) { | |
2072 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); | |
2073 | return; | |
c41f8cbd | 2074 | } |
c61b536c | 2075 | |
5bfb2c31 SS |
2076 | zfcp_fsf_fcp_handler_common(req); |
2077 | ||
c61b536c CS |
2078 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { |
2079 | set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED); | |
2080 | goto skip_fsfstatus; | |
2081 | } | |
2082 | ||
2083 | switch (req->qtcb->header.fsf_status) { | |
2084 | case FSF_INCONSISTENT_PROT_DATA: | |
2085 | case FSF_INVALID_PROT_PARM: | |
2086 | set_host_byte(scpnt, DID_ERROR); | |
2087 | goto skip_fsfstatus; | |
2088 | case FSF_BLOCK_GUARD_CHECK_FAILURE: | |
2089 | zfcp_scsi_dif_sense_error(scpnt, 0x1); | |
2090 | goto skip_fsfstatus; | |
2091 | case FSF_APP_TAG_CHECK_FAILURE: | |
2092 | zfcp_scsi_dif_sense_error(scpnt, 0x2); | |
2093 | goto skip_fsfstatus; | |
2094 | case FSF_REF_TAG_CHECK_FAILURE: | |
2095 | zfcp_scsi_dif_sense_error(scpnt, 0x3); | |
2096 | goto skip_fsfstatus; | |
2097 | } | |
2098 | fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp; | |
2099 | zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt); | |
2100 | ||
2101 | skip_fsfstatus: | |
2102 | zfcp_fsf_req_trace(req, scpnt); | |
250a1352 | 2103 | zfcp_dbf_scsi_result(scpnt, req); |
c61b536c CS |
2104 | |
2105 | scpnt->host_scribble = NULL; | |
2106 | (scpnt->scsi_done) (scpnt); | |
2107 | /* | |
2108 | * We must hold this lock until scsi_done has been called. | |
2109 | * Otherwise we may call scsi_done after abort regarding this | |
2110 | * command has completed. | |
2111 | * Note: scsi_done must not block! | |
2112 | */ | |
2113 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); | |
1da177e4 LT |
2114 | } |
2115 | ||
ef3eb71d FB |
2116 | static int zfcp_fsf_set_data_dir(struct scsi_cmnd *scsi_cmnd, u32 *data_dir) |
2117 | { | |
2118 | switch (scsi_get_prot_op(scsi_cmnd)) { | |
2119 | case SCSI_PROT_NORMAL: | |
2120 | switch (scsi_cmnd->sc_data_direction) { | |
2121 | case DMA_NONE: | |
2122 | *data_dir = FSF_DATADIR_CMND; | |
2123 | break; | |
2124 | case DMA_FROM_DEVICE: | |
2125 | *data_dir = FSF_DATADIR_READ; | |
2126 | break; | |
2127 | case DMA_TO_DEVICE: | |
2128 | *data_dir = FSF_DATADIR_WRITE; | |
2129 | break; | |
2130 | case DMA_BIDIRECTIONAL: | |
2131 | return -EINVAL; | |
2132 | } | |
2133 | break; | |
2134 | ||
2135 | case SCSI_PROT_READ_STRIP: | |
2136 | *data_dir = FSF_DATADIR_DIF_READ_STRIP; | |
2137 | break; | |
2138 | case SCSI_PROT_WRITE_INSERT: | |
2139 | *data_dir = FSF_DATADIR_DIF_WRITE_INSERT; | |
2140 | break; | |
2141 | case SCSI_PROT_READ_PASS: | |
2142 | *data_dir = FSF_DATADIR_DIF_READ_CONVERT; | |
2143 | break; | |
2144 | case SCSI_PROT_WRITE_PASS: | |
2145 | *data_dir = FSF_DATADIR_DIF_WRITE_CONVERT; | |
2146 | break; | |
2147 | default: | |
2148 | return -EINVAL; | |
2149 | } | |
2150 | ||
2151 | return 0; | |
2152 | } | |
2153 | ||
c41f8cbd | 2154 | /** |
b62a8d9b | 2155 | * zfcp_fsf_fcp_cmnd - initiate an FCP command (for a SCSI command) |
c41f8cbd | 2156 | * @scsi_cmnd: scsi command to be sent |
1da177e4 | 2157 | */ |
b62a8d9b | 2158 | int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd) |
1da177e4 | 2159 | { |
c41f8cbd | 2160 | struct zfcp_fsf_req *req; |
4318e08c | 2161 | struct fcp_cmnd *fcp_cmnd; |
bc90c863 | 2162 | unsigned int sbtype = SBAL_FLAGS0_TYPE_READ; |
ef3eb71d | 2163 | int real_bytes, retval = -EIO, dix_bytes = 0; |
b62a8d9b CS |
2164 | struct scsi_device *sdev = scsi_cmnd->device; |
2165 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); | |
2166 | struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; | |
564e1c86 | 2167 | struct zfcp_qdio *qdio = adapter->qdio; |
ef3eb71d | 2168 | struct fsf_qtcb_bottom_io *io; |
e55f8753 | 2169 | unsigned long flags; |
1da177e4 | 2170 | |
b62a8d9b | 2171 | if (unlikely(!(atomic_read(&zfcp_sdev->status) & |
c41f8cbd SS |
2172 | ZFCP_STATUS_COMMON_UNBLOCKED))) |
2173 | return -EBUSY; | |
1da177e4 | 2174 | |
e55f8753 | 2175 | spin_lock_irqsave(&qdio->req_q_lock, flags); |
706eca49 | 2176 | if (atomic_read(&qdio->req_q_free) <= 0) { |
564e1c86 | 2177 | atomic_inc(&qdio->req_q_full); |
c41f8cbd | 2178 | goto out; |
8fdf30d5 | 2179 | } |
09a46c6e | 2180 | |
1674b405 CS |
2181 | if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE) |
2182 | sbtype = SBAL_FLAGS0_TYPE_WRITE; | |
2183 | ||
564e1c86 | 2184 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND, |
1674b405 | 2185 | sbtype, adapter->pool.scsi_req); |
09a46c6e | 2186 | |
025270f0 | 2187 | if (IS_ERR(req)) { |
c41f8cbd SS |
2188 | retval = PTR_ERR(req); |
2189 | goto out; | |
2190 | } | |
2191 | ||
ef3eb71d FB |
2192 | scsi_cmnd->host_scribble = (unsigned char *) req->req_id; |
2193 | ||
2194 | io = &req->qtcb->bottom.io; | |
09a46c6e | 2195 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
c41f8cbd | 2196 | req->data = scsi_cmnd; |
c61b536c | 2197 | req->handler = zfcp_fsf_fcp_cmnd_handler; |
b62a8d9b CS |
2198 | req->qtcb->header.lun_handle = zfcp_sdev->lun_handle; |
2199 | req->qtcb->header.port_handle = zfcp_sdev->port->handle; | |
ef3eb71d FB |
2200 | io->service_class = FSF_CLASS_3; |
2201 | io->fcp_cmnd_length = FCP_CMND_LEN; | |
c41f8cbd | 2202 | |
ef3eb71d FB |
2203 | if (scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) { |
2204 | io->data_block_length = scsi_cmnd->device->sector_size; | |
2205 | io->ref_tag_value = scsi_get_lba(scsi_cmnd) & 0xFFFFFFFF; | |
1da177e4 LT |
2206 | } |
2207 | ||
ef3eb71d FB |
2208 | zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction); |
2209 | ||
4318e08c CS |
2210 | fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd; |
2211 | zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd); | |
1da177e4 | 2212 | |
ef3eb71d FB |
2213 | if (scsi_prot_sg_count(scsi_cmnd)) { |
2214 | zfcp_qdio_set_data_div(qdio, &req->qdio_req, | |
2215 | scsi_prot_sg_count(scsi_cmnd)); | |
2216 | dix_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, | |
2217 | scsi_prot_sglist(scsi_cmnd)); | |
2218 | io->prot_data_length = dix_bytes; | |
2219 | } | |
2220 | ||
1674b405 | 2221 | real_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, |
01b04759 | 2222 | scsi_sglist(scsi_cmnd)); |
ef3eb71d FB |
2223 | |
2224 | if (unlikely(real_bytes < 0) || unlikely(dix_bytes < 0)) | |
c41f8cbd | 2225 | goto failed_scsi_cmnd; |
1da177e4 | 2226 | |
ef3eb71d FB |
2227 | zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req); |
2228 | ||
c41f8cbd SS |
2229 | retval = zfcp_fsf_req_send(req); |
2230 | if (unlikely(retval)) | |
2231 | goto failed_scsi_cmnd; | |
1da177e4 | 2232 | |
c41f8cbd | 2233 | goto out; |
1da177e4 | 2234 | |
c41f8cbd | 2235 | failed_scsi_cmnd: |
c41f8cbd SS |
2236 | zfcp_fsf_req_free(req); |
2237 | scsi_cmnd->host_scribble = NULL; | |
2238 | out: | |
e55f8753 | 2239 | spin_unlock_irqrestore(&qdio->req_q_lock, flags); |
c41f8cbd | 2240 | return retval; |
1da177e4 LT |
2241 | } |
2242 | ||
c61b536c CS |
2243 | static void zfcp_fsf_fcp_task_mgmt_handler(struct zfcp_fsf_req *req) |
2244 | { | |
2245 | struct fcp_resp_with_ext *fcp_rsp; | |
2246 | struct fcp_resp_rsp_info *rsp_info; | |
2247 | ||
2248 | zfcp_fsf_fcp_handler_common(req); | |
2249 | ||
2250 | fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp; | |
2251 | rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1]; | |
2252 | ||
2253 | if ((rsp_info->rsp_code != FCP_TMF_CMPL) || | |
2254 | (req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
2255 | req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
2256 | } | |
2257 | ||
1da177e4 | 2258 | /** |
b62a8d9b CS |
2259 | * zfcp_fsf_fcp_task_mgmt - send SCSI task management command |
2260 | * @scmnd: SCSI command to send the task management command for | |
c41f8cbd | 2261 | * @tm_flags: unsigned byte for task management flags |
c41f8cbd | 2262 | * Returns: on success pointer to struct fsf_req, NULL otherwise |
1da177e4 | 2263 | */ |
b62a8d9b CS |
2264 | struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_cmnd *scmnd, |
2265 | u8 tm_flags) | |
1da177e4 | 2266 | { |
c41f8cbd | 2267 | struct zfcp_fsf_req *req = NULL; |
4318e08c | 2268 | struct fcp_cmnd *fcp_cmnd; |
b62a8d9b CS |
2269 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scmnd->device); |
2270 | struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio; | |
1da177e4 | 2271 | |
b62a8d9b | 2272 | if (unlikely(!(atomic_read(&zfcp_sdev->status) & |
c41f8cbd SS |
2273 | ZFCP_STATUS_COMMON_UNBLOCKED))) |
2274 | return NULL; | |
1da177e4 | 2275 | |
44a24cb3 | 2276 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 2277 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 2278 | goto out; |
09a46c6e | 2279 | |
564e1c86 | 2280 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND, |
1674b405 | 2281 | SBAL_FLAGS0_TYPE_WRITE, |
564e1c86 | 2282 | qdio->adapter->pool.scsi_req); |
09a46c6e | 2283 | |
633528c3 SS |
2284 | if (IS_ERR(req)) { |
2285 | req = NULL; | |
c41f8cbd | 2286 | goto out; |
633528c3 | 2287 | } |
1da177e4 | 2288 | |
b62a8d9b | 2289 | req->data = scmnd; |
c61b536c | 2290 | req->handler = zfcp_fsf_fcp_task_mgmt_handler; |
b62a8d9b CS |
2291 | req->qtcb->header.lun_handle = zfcp_sdev->lun_handle; |
2292 | req->qtcb->header.port_handle = zfcp_sdev->port->handle; | |
c41f8cbd SS |
2293 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; |
2294 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
4318e08c | 2295 | req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN; |
c41f8cbd | 2296 | |
1674b405 | 2297 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 2298 | |
4318e08c | 2299 | fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd; |
b62a8d9b | 2300 | zfcp_fc_fcp_tm(fcp_cmnd, scmnd->device, tm_flags); |
1da177e4 | 2301 | |
c41f8cbd SS |
2302 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); |
2303 | if (!zfcp_fsf_req_send(req)) | |
2304 | goto out; | |
1da177e4 | 2305 | |
c41f8cbd SS |
2306 | zfcp_fsf_req_free(req); |
2307 | req = NULL; | |
2308 | out: | |
44a24cb3 | 2309 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd SS |
2310 | return req; |
2311 | } | |
1da177e4 | 2312 | |
c41f8cbd SS |
2313 | static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req) |
2314 | { | |
1da177e4 LT |
2315 | } |
2316 | ||
c41f8cbd SS |
2317 | /** |
2318 | * zfcp_fsf_control_file - control file upload/download | |
2319 | * @adapter: pointer to struct zfcp_adapter | |
2320 | * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc | |
2321 | * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise | |
1da177e4 | 2322 | */ |
c41f8cbd SS |
2323 | struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, |
2324 | struct zfcp_fsf_cfdc *fsf_cfdc) | |
1da177e4 | 2325 | { |
564e1c86 | 2326 | struct zfcp_qdio *qdio = adapter->qdio; |
c41f8cbd SS |
2327 | struct zfcp_fsf_req *req = NULL; |
2328 | struct fsf_qtcb_bottom_support *bottom; | |
2329 | int direction, retval = -EIO, bytes; | |
2330 | ||
2331 | if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) | |
2332 | return ERR_PTR(-EOPNOTSUPP); | |
2333 | ||
2334 | switch (fsf_cfdc->command) { | |
2335 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: | |
2336 | direction = SBAL_FLAGS0_TYPE_WRITE; | |
2337 | break; | |
2338 | case FSF_QTCB_UPLOAD_CONTROL_FILE: | |
2339 | direction = SBAL_FLAGS0_TYPE_READ; | |
2340 | break; | |
2341 | default: | |
2342 | return ERR_PTR(-EINVAL); | |
2343 | } | |
1da177e4 | 2344 | |
44a24cb3 | 2345 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 2346 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 2347 | goto out; |
1da177e4 | 2348 | |
1674b405 | 2349 | req = zfcp_fsf_req_create(qdio, fsf_cfdc->command, direction, NULL); |
025270f0 | 2350 | if (IS_ERR(req)) { |
c41f8cbd SS |
2351 | retval = -EPERM; |
2352 | goto out; | |
2353 | } | |
1da177e4 | 2354 | |
c41f8cbd | 2355 | req->handler = zfcp_fsf_control_file_handler; |
1da177e4 | 2356 | |
c41f8cbd SS |
2357 | bottom = &req->qtcb->bottom.support; |
2358 | bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE; | |
2359 | bottom->option = fsf_cfdc->option; | |
8a36e453 | 2360 | |
01b04759 SS |
2361 | bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, fsf_cfdc->sg); |
2362 | ||
c41f8cbd | 2363 | if (bytes != ZFCP_CFDC_MAX_SIZE) { |
c41f8cbd SS |
2364 | zfcp_fsf_req_free(req); |
2365 | goto out; | |
2366 | } | |
ef3eb71d | 2367 | zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req); |
1da177e4 | 2368 | |
c41f8cbd SS |
2369 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
2370 | retval = zfcp_fsf_req_send(req); | |
2371 | out: | |
44a24cb3 | 2372 | spin_unlock_irq(&qdio->req_q_lock); |
8a36e453 | 2373 | |
c41f8cbd | 2374 | if (!retval) { |
058b8647 | 2375 | wait_for_completion(&req->completion); |
c41f8cbd | 2376 | return req; |
1da177e4 | 2377 | } |
c41f8cbd | 2378 | return ERR_PTR(retval); |
1da177e4 | 2379 | } |
bd63eaf4 SS |
2380 | |
2381 | /** | |
2382 | * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO | |
2383 | * @adapter: pointer to struct zfcp_adapter | |
2384 | * @sbal_idx: response queue index of SBAL to be processed | |
2385 | */ | |
564e1c86 | 2386 | void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx) |
bd63eaf4 | 2387 | { |
564e1c86 | 2388 | struct zfcp_adapter *adapter = qdio->adapter; |
706eca49 | 2389 | struct qdio_buffer *sbal = qdio->res_q[sbal_idx]; |
bd63eaf4 SS |
2390 | struct qdio_buffer_element *sbale; |
2391 | struct zfcp_fsf_req *fsf_req; | |
b6bd2fb9 | 2392 | unsigned long req_id; |
bd63eaf4 SS |
2393 | int idx; |
2394 | ||
2395 | for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) { | |
2396 | ||
2397 | sbale = &sbal->element[idx]; | |
2398 | req_id = (unsigned long) sbale->addr; | |
b6bd2fb9 | 2399 | fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id); |
bd63eaf4 | 2400 | |
339f4f4e | 2401 | if (!fsf_req) { |
bd63eaf4 SS |
2402 | /* |
2403 | * Unknown request means that we have potentially memory | |
2404 | * corruption and must stop the machine immediately. | |
2405 | */ | |
339f4f4e | 2406 | zfcp_qdio_siosl(adapter); |
bd63eaf4 SS |
2407 | panic("error: unknown req_id (%lx) on adapter %s.\n", |
2408 | req_id, dev_name(&adapter->ccw_device->dev)); | |
339f4f4e | 2409 | } |
bd63eaf4 | 2410 | |
34c2b712 | 2411 | fsf_req->qdio_req.sbal_response = sbal_idx; |
bd63eaf4 SS |
2412 | zfcp_fsf_req_complete(fsf_req); |
2413 | ||
2414 | if (likely(sbale->flags & SBAL_FLAGS_LAST_ENTRY)) | |
2415 | break; | |
2416 | } | |
2417 | } | |
a54ca0f6 SS |
2418 | |
2419 | struct zfcp_fsf_req *zfcp_fsf_get_req(struct zfcp_qdio *qdio, | |
2420 | struct qdio_buffer *sbal) | |
2421 | { | |
2422 | struct qdio_buffer_element *sbale = &sbal->element[0]; | |
2423 | u64 req_id = (unsigned long) sbale->addr; | |
2424 | ||
2425 | return zfcp_reqlist_find(qdio->adapter->req_list, req_id); | |
2426 | } |