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Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
553448f6 | 2 | * zfcp device driver |
1da177e4 | 3 | * |
553448f6 | 4 | * Implementation of FSF commands. |
1da177e4 | 5 | * |
9edf7d75 | 6 | * Copyright IBM Corp. 2002, 2013 |
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 | |
259afe2e CS |
21 | struct kmem_cache *zfcp_fsf_qtcb_cache; |
22 | ||
287ac01a CS |
23 | static void zfcp_fsf_request_timeout_handler(unsigned long data) |
24 | { | |
25 | struct zfcp_adapter *adapter = (struct zfcp_adapter *) data; | |
339f4f4e | 26 | zfcp_qdio_siosl(adapter); |
5ffd51a5 | 27 | zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, |
ea4a3a6a | 28 | "fsrth_1"); |
287ac01a CS |
29 | } |
30 | ||
31 | static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req, | |
32 | unsigned long timeout) | |
33 | { | |
34 | fsf_req->timer.function = zfcp_fsf_request_timeout_handler; | |
35 | fsf_req->timer.data = (unsigned long) fsf_req->adapter; | |
36 | fsf_req->timer.expires = jiffies + timeout; | |
37 | add_timer(&fsf_req->timer); | |
38 | } | |
39 | ||
40 | static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req) | |
41 | { | |
42 | BUG_ON(!fsf_req->erp_action); | |
43 | fsf_req->timer.function = zfcp_erp_timeout_handler; | |
44 | fsf_req->timer.data = (unsigned long) fsf_req->erp_action; | |
45 | fsf_req->timer.expires = jiffies + 30 * HZ; | |
46 | add_timer(&fsf_req->timer); | |
47 | } | |
48 | ||
1da177e4 LT |
49 | /* association between FSF command and FSF QTCB type */ |
50 | static u32 fsf_qtcb_type[] = { | |
51 | [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND, | |
52 | [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND, | |
53 | [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND, | |
54 | [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND, | |
55 | [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND, | |
56 | [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND, | |
57 | [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND, | |
58 | [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND, | |
59 | [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND, | |
60 | [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND, | |
61 | [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND, | |
62 | [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND, | |
63 | [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND | |
64 | }; | |
65 | ||
553448f6 CS |
66 | static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req) |
67 | { | |
ff3b24fa CS |
68 | dev_err(&req->adapter->ccw_device->dev, "FCP device not " |
69 | "operational because of an unsupported FC class\n"); | |
ea4a3a6a | 70 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fscns_1"); |
553448f6 CS |
71 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
72 | } | |
73 | ||
c41f8cbd SS |
74 | /** |
75 | * zfcp_fsf_req_free - free memory used by fsf request | |
76 | * @fsf_req: pointer to struct zfcp_fsf_req | |
1da177e4 | 77 | */ |
c41f8cbd | 78 | void zfcp_fsf_req_free(struct zfcp_fsf_req *req) |
1da177e4 | 79 | { |
c41f8cbd | 80 | if (likely(req->pool)) { |
a4623c46 SS |
81 | if (likely(req->qtcb)) |
82 | mempool_free(req->qtcb, req->adapter->pool.qtcb_pool); | |
c41f8cbd | 83 | mempool_free(req, req->pool); |
dd52e0ea HC |
84 | return; |
85 | } | |
86 | ||
a4623c46 | 87 | if (likely(req->qtcb)) |
259afe2e | 88 | kmem_cache_free(zfcp_fsf_qtcb_cache, req->qtcb); |
a4623c46 | 89 | kfree(req); |
1da177e4 LT |
90 | } |
91 | ||
c41f8cbd | 92 | static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req) |
1da177e4 | 93 | { |
ecf0c772 | 94 | unsigned long flags; |
c41f8cbd SS |
95 | struct fsf_status_read_buffer *sr_buf = req->data; |
96 | struct zfcp_adapter *adapter = req->adapter; | |
97 | struct zfcp_port *port; | |
800c0cad | 98 | int d_id = ntoh24(sr_buf->d_id); |
1da177e4 | 99 | |
ecf0c772 SS |
100 | read_lock_irqsave(&adapter->port_list_lock, flags); |
101 | list_for_each_entry(port, &adapter->port_list, list) | |
c41f8cbd | 102 | if (port->d_id == d_id) { |
ea4a3a6a | 103 | zfcp_erp_port_reopen(port, 0, "fssrpc1"); |
ecf0c772 | 104 | break; |
c41f8cbd | 105 | } |
ecf0c772 | 106 | read_unlock_irqrestore(&adapter->port_list_lock, flags); |
1da177e4 LT |
107 | } |
108 | ||
edaed859 | 109 | static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, |
c41f8cbd | 110 | struct fsf_link_down_info *link_down) |
aef4a983 | 111 | { |
c41f8cbd | 112 | struct zfcp_adapter *adapter = req->adapter; |
698ec016 | 113 | |
c41f8cbd | 114 | if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED) |
ee69ab7a MS |
115 | return; |
116 | ||
117 | atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status); | |
70932935 | 118 | |
a2fa0aed | 119 | zfcp_scsi_schedule_rports_block(adapter); |
ee69ab7a | 120 | |
c41f8cbd | 121 | if (!link_down) |
2f8f3ed5 | 122 | goto out; |
ee69ab7a | 123 | |
aef4a983 MS |
124 | switch (link_down->error_code) { |
125 | case FSF_PSQ_LINK_NO_LIGHT: | |
c41f8cbd | 126 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
127 | "There is no light signal from the local " |
128 | "fibre channel cable\n"); | |
aef4a983 MS |
129 | break; |
130 | case FSF_PSQ_LINK_WRAP_PLUG: | |
c41f8cbd | 131 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
132 | "There is a wrap plug instead of a fibre " |
133 | "channel cable\n"); | |
aef4a983 MS |
134 | break; |
135 | case FSF_PSQ_LINK_NO_FCP: | |
c41f8cbd | 136 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
137 | "The adjacent fibre channel node does not " |
138 | "support FCP\n"); | |
aef4a983 MS |
139 | break; |
140 | case FSF_PSQ_LINK_FIRMWARE_UPDATE: | |
c41f8cbd | 141 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
142 | "The FCP device is suspended because of a " |
143 | "firmware update\n"); | |
553448f6 | 144 | break; |
aef4a983 | 145 | case FSF_PSQ_LINK_INVALID_WWPN: |
c41f8cbd | 146 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
147 | "The FCP device detected a WWPN that is " |
148 | "duplicate or not valid\n"); | |
aef4a983 MS |
149 | break; |
150 | case FSF_PSQ_LINK_NO_NPIV_SUPPORT: | |
c41f8cbd | 151 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 152 | "The fibre channel fabric does not support NPIV\n"); |
aef4a983 MS |
153 | break; |
154 | case FSF_PSQ_LINK_NO_FCP_RESOURCES: | |
c41f8cbd | 155 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 156 | "The FCP adapter cannot support more NPIV ports\n"); |
aef4a983 MS |
157 | break; |
158 | case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: | |
c41f8cbd | 159 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
160 | "The adjacent switch cannot support " |
161 | "more NPIV ports\n"); | |
aef4a983 MS |
162 | break; |
163 | case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: | |
c41f8cbd | 164 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
165 | "The FCP adapter could not log in to the " |
166 | "fibre channel fabric\n"); | |
aef4a983 MS |
167 | break; |
168 | case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: | |
c41f8cbd | 169 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
170 | "The WWPN assignment file on the FCP adapter " |
171 | "has been damaged\n"); | |
aef4a983 MS |
172 | break; |
173 | case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: | |
c41f8cbd | 174 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
175 | "The mode table on the FCP adapter " |
176 | "has been damaged\n"); | |
aef4a983 MS |
177 | break; |
178 | case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: | |
c41f8cbd | 179 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
180 | "All NPIV ports on the FCP adapter have " |
181 | "been assigned\n"); | |
aef4a983 MS |
182 | break; |
183 | default: | |
c41f8cbd | 184 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
185 | "The link between the FCP adapter and " |
186 | "the FC fabric is down\n"); | |
aef4a983 | 187 | } |
c41f8cbd | 188 | out: |
edaed859 | 189 | zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_ERP_FAILED); |
aef4a983 MS |
190 | } |
191 | ||
c41f8cbd | 192 | static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req) |
1da177e4 | 193 | { |
c41f8cbd SS |
194 | struct fsf_status_read_buffer *sr_buf = req->data; |
195 | struct fsf_link_down_info *ldi = | |
196 | (struct fsf_link_down_info *) &sr_buf->payload; | |
1da177e4 | 197 | |
c41f8cbd SS |
198 | switch (sr_buf->status_subtype) { |
199 | case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: | |
edaed859 | 200 | zfcp_fsf_link_down_info_eval(req, ldi); |
1da177e4 | 201 | break; |
c41f8cbd | 202 | case FSF_STATUS_READ_SUB_FDISC_FAILED: |
edaed859 | 203 | zfcp_fsf_link_down_info_eval(req, ldi); |
1da177e4 | 204 | break; |
c41f8cbd | 205 | case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE: |
edaed859 | 206 | zfcp_fsf_link_down_info_eval(req, NULL); |
c41f8cbd SS |
207 | }; |
208 | } | |
1da177e4 | 209 | |
c41f8cbd SS |
210 | static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) |
211 | { | |
212 | struct zfcp_adapter *adapter = req->adapter; | |
213 | struct fsf_status_read_buffer *sr_buf = req->data; | |
1da177e4 | 214 | |
c41f8cbd | 215 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
a54ca0f6 | 216 | zfcp_dbf_hba_fsf_uss("fssrh_1", req); |
c7b279ae | 217 | mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data); |
c41f8cbd SS |
218 | zfcp_fsf_req_free(req); |
219 | return; | |
220 | } | |
1da177e4 | 221 | |
0100998d | 222 | zfcp_dbf_hba_fsf_uss("fssrh_4", req); |
1da177e4 | 223 | |
c41f8cbd SS |
224 | switch (sr_buf->status_type) { |
225 | case FSF_STATUS_READ_PORT_CLOSED: | |
226 | zfcp_fsf_status_read_port_closed(req); | |
1da177e4 | 227 | break; |
c41f8cbd SS |
228 | case FSF_STATUS_READ_INCOMING_ELS: |
229 | zfcp_fc_incoming_els(req); | |
1da177e4 | 230 | break; |
c41f8cbd | 231 | case FSF_STATUS_READ_SENSE_DATA_AVAIL: |
1da177e4 | 232 | break; |
c41f8cbd | 233 | case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: |
ff3b24fa CS |
234 | dev_warn(&adapter->ccw_device->dev, |
235 | "The error threshold for checksum statistics " | |
236 | "has been exceeded\n"); | |
a54ca0f6 | 237 | zfcp_dbf_hba_bit_err("fssrh_3", req); |
1da177e4 | 238 | break; |
c41f8cbd SS |
239 | case FSF_STATUS_READ_LINK_DOWN: |
240 | zfcp_fsf_status_read_link_down(req); | |
2d1e547f | 241 | zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKDOWN, 0); |
c41f8cbd SS |
242 | break; |
243 | case FSF_STATUS_READ_LINK_UP: | |
244 | dev_info(&adapter->ccw_device->dev, | |
ff3b24fa | 245 | "The local link has been restored\n"); |
c41f8cbd | 246 | /* All ports should be marked as ready to run again */ |
edaed859 SS |
247 | zfcp_erp_set_adapter_status(adapter, |
248 | ZFCP_STATUS_COMMON_RUNNING); | |
c41f8cbd SS |
249 | zfcp_erp_adapter_reopen(adapter, |
250 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
251 | ZFCP_STATUS_COMMON_ERP_FAILED, | |
ea4a3a6a | 252 | "fssrh_2"); |
2d1e547f SS |
253 | zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKUP, 0); |
254 | ||
c41f8cbd SS |
255 | break; |
256 | case FSF_STATUS_READ_NOTIFICATION_LOST: | |
c41f8cbd | 257 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS) |
43f60cbd | 258 | zfcp_fc_conditional_port_scan(adapter); |
c41f8cbd | 259 | break; |
c41f8cbd SS |
260 | case FSF_STATUS_READ_FEATURE_UPDATE_ALERT: |
261 | adapter->adapter_features = sr_buf->payload.word[0]; | |
1da177e4 | 262 | break; |
1da177e4 LT |
263 | } |
264 | ||
c7b279ae | 265 | mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data); |
c41f8cbd | 266 | zfcp_fsf_req_free(req); |
1da177e4 | 267 | |
c41f8cbd | 268 | atomic_inc(&adapter->stat_miss); |
4544683a | 269 | queue_work(adapter->work_queue, &adapter->stat_work); |
c41f8cbd | 270 | } |
1da177e4 | 271 | |
c41f8cbd SS |
272 | static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req) |
273 | { | |
274 | switch (req->qtcb->header.fsf_status_qual.word[0]) { | |
275 | case FSF_SQ_FCP_RSP_AVAILABLE: | |
276 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
277 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
278 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
279 | return; | |
280 | case FSF_SQ_COMMAND_ABORTED: | |
c41f8cbd SS |
281 | break; |
282 | case FSF_SQ_NO_RECOM: | |
283 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
284 | "The FCP adapter reported a problem " |
285 | "that cannot be recovered\n"); | |
339f4f4e | 286 | zfcp_qdio_siosl(req->adapter); |
ea4a3a6a | 287 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1"); |
c41f8cbd SS |
288 | break; |
289 | } | |
290 | /* all non-return stats set FSFREQ_ERROR*/ | |
291 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
292 | } |
293 | ||
c41f8cbd | 294 | static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req) |
1da177e4 | 295 | { |
c41f8cbd SS |
296 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
297 | return; | |
1da177e4 | 298 | |
c41f8cbd SS |
299 | switch (req->qtcb->header.fsf_status) { |
300 | case FSF_UNKNOWN_COMMAND: | |
301 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa | 302 | "The FCP adapter does not recognize the command 0x%x\n", |
c41f8cbd | 303 | req->qtcb->header.fsf_command); |
ea4a3a6a | 304 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1"); |
c41f8cbd SS |
305 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
306 | break; | |
307 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
308 | zfcp_fsf_fsfstatus_qual_eval(req); | |
309 | break; | |
310 | } | |
311 | } | |
1da177e4 | 312 | |
c41f8cbd SS |
313 | static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) |
314 | { | |
315 | struct zfcp_adapter *adapter = req->adapter; | |
316 | struct fsf_qtcb *qtcb = req->qtcb; | |
317 | union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual; | |
1da177e4 | 318 | |
5771710b | 319 | zfcp_dbf_hba_fsf_response(req); |
1da177e4 | 320 | |
c41f8cbd | 321 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
4c571c65 | 322 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
323 | return; |
324 | } | |
1da177e4 | 325 | |
c41f8cbd SS |
326 | switch (qtcb->prefix.prot_status) { |
327 | case FSF_PROT_GOOD: | |
328 | case FSF_PROT_FSF_STATUS_PRESENTED: | |
329 | return; | |
330 | case FSF_PROT_QTCB_VERSION_ERROR: | |
331 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
332 | "QTCB version 0x%x not supported by FCP adapter " |
333 | "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION, | |
334 | psq->word[0], psq->word[1]); | |
ea4a3a6a | 335 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1"); |
c41f8cbd SS |
336 | break; |
337 | case FSF_PROT_ERROR_STATE: | |
338 | case FSF_PROT_SEQ_NUMB_ERROR: | |
ea4a3a6a | 339 | zfcp_erp_adapter_reopen(adapter, 0, "fspse_2"); |
4c571c65 | 340 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
341 | break; |
342 | case FSF_PROT_UNSUPP_QTCB_TYPE: | |
343 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 344 | "The QTCB type is not supported by the FCP adapter\n"); |
ea4a3a6a | 345 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3"); |
c41f8cbd SS |
346 | break; |
347 | case FSF_PROT_HOST_CONNECTION_INITIALIZING: | |
348 | atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT, | |
349 | &adapter->status); | |
350 | break; | |
351 | case FSF_PROT_DUPLICATE_REQUEST_ID: | |
352 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 353 | "0x%Lx is an ambiguous request identifier\n", |
c41f8cbd | 354 | (unsigned long long)qtcb->bottom.support.req_handle); |
ea4a3a6a | 355 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_4"); |
c41f8cbd SS |
356 | break; |
357 | case FSF_PROT_LINK_DOWN: | |
edaed859 | 358 | zfcp_fsf_link_down_info_eval(req, &psq->link_down_info); |
452b505c | 359 | /* go through reopen to flush pending requests */ |
ea4a3a6a | 360 | zfcp_erp_adapter_reopen(adapter, 0, "fspse_6"); |
c41f8cbd SS |
361 | break; |
362 | case FSF_PROT_REEST_QUEUE: | |
363 | /* All ports should be marked as ready to run again */ | |
edaed859 SS |
364 | zfcp_erp_set_adapter_status(adapter, |
365 | ZFCP_STATUS_COMMON_RUNNING); | |
c41f8cbd SS |
366 | zfcp_erp_adapter_reopen(adapter, |
367 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
5ffd51a5 | 368 | ZFCP_STATUS_COMMON_ERP_FAILED, |
ea4a3a6a | 369 | "fspse_8"); |
c41f8cbd SS |
370 | break; |
371 | default: | |
372 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 373 | "0x%x is not a valid transfer protocol status\n", |
c41f8cbd | 374 | qtcb->prefix.prot_status); |
339f4f4e | 375 | zfcp_qdio_siosl(adapter); |
ea4a3a6a | 376 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9"); |
c41f8cbd SS |
377 | } |
378 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
379 | } |
380 | ||
c41f8cbd SS |
381 | /** |
382 | * zfcp_fsf_req_complete - process completion of a FSF request | |
383 | * @fsf_req: The FSF request that has been completed. | |
384 | * | |
385 | * When a request has been completed either from the FCP adapter, | |
386 | * or it has been dismissed due to a queue shutdown, this function | |
387 | * is called to process the completion status and trigger further | |
388 | * events related to the FSF request. | |
389 | */ | |
bd63eaf4 | 390 | static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req) |
1da177e4 | 391 | { |
c41f8cbd SS |
392 | if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) { |
393 | zfcp_fsf_status_read_handler(req); | |
394 | return; | |
395 | } | |
1da177e4 | 396 | |
c41f8cbd SS |
397 | del_timer(&req->timer); |
398 | zfcp_fsf_protstatus_eval(req); | |
399 | zfcp_fsf_fsfstatus_eval(req); | |
400 | req->handler(req); | |
1da177e4 | 401 | |
c41f8cbd | 402 | if (req->erp_action) |
287ac01a | 403 | zfcp_erp_notify(req->erp_action, 0); |
1da177e4 | 404 | |
c41f8cbd SS |
405 | if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP)) |
406 | zfcp_fsf_req_free(req); | |
407 | else | |
058b8647 | 408 | complete(&req->completion); |
c41f8cbd | 409 | } |
1da177e4 | 410 | |
bd63eaf4 SS |
411 | /** |
412 | * zfcp_fsf_req_dismiss_all - dismiss all fsf requests | |
413 | * @adapter: pointer to struct zfcp_adapter | |
414 | * | |
415 | * Never ever call this without shutting down the adapter first. | |
416 | * Otherwise the adapter would continue using and corrupting s390 storage. | |
417 | * Included BUG_ON() call to ensure this is done. | |
418 | * ERP is supposed to be the only user of this function. | |
419 | */ | |
420 | void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter) | |
421 | { | |
422 | struct zfcp_fsf_req *req, *tmp; | |
bd63eaf4 | 423 | LIST_HEAD(remove_queue); |
bd63eaf4 SS |
424 | |
425 | BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP); | |
b6bd2fb9 | 426 | zfcp_reqlist_move(adapter->req_list, &remove_queue); |
bd63eaf4 SS |
427 | |
428 | list_for_each_entry_safe(req, tmp, &remove_queue, list) { | |
429 | list_del(&req->list); | |
430 | req->status |= ZFCP_STATUS_FSFREQ_DISMISSED; | |
431 | zfcp_fsf_req_complete(req); | |
432 | } | |
433 | } | |
434 | ||
d2201977 SM |
435 | #define ZFCP_FSF_PORTSPEED_1GBIT (1 << 0) |
436 | #define ZFCP_FSF_PORTSPEED_2GBIT (1 << 1) | |
437 | #define ZFCP_FSF_PORTSPEED_4GBIT (1 << 2) | |
438 | #define ZFCP_FSF_PORTSPEED_10GBIT (1 << 3) | |
439 | #define ZFCP_FSF_PORTSPEED_8GBIT (1 << 4) | |
440 | #define ZFCP_FSF_PORTSPEED_16GBIT (1 << 5) | |
441 | #define ZFCP_FSF_PORTSPEED_NOT_NEGOTIATED (1 << 15) | |
442 | ||
443 | static u32 zfcp_fsf_convert_portspeed(u32 fsf_speed) | |
444 | { | |
445 | u32 fdmi_speed = 0; | |
446 | if (fsf_speed & ZFCP_FSF_PORTSPEED_1GBIT) | |
447 | fdmi_speed |= FC_PORTSPEED_1GBIT; | |
448 | if (fsf_speed & ZFCP_FSF_PORTSPEED_2GBIT) | |
449 | fdmi_speed |= FC_PORTSPEED_2GBIT; | |
450 | if (fsf_speed & ZFCP_FSF_PORTSPEED_4GBIT) | |
451 | fdmi_speed |= FC_PORTSPEED_4GBIT; | |
452 | if (fsf_speed & ZFCP_FSF_PORTSPEED_10GBIT) | |
453 | fdmi_speed |= FC_PORTSPEED_10GBIT; | |
454 | if (fsf_speed & ZFCP_FSF_PORTSPEED_8GBIT) | |
455 | fdmi_speed |= FC_PORTSPEED_8GBIT; | |
456 | if (fsf_speed & ZFCP_FSF_PORTSPEED_16GBIT) | |
457 | fdmi_speed |= FC_PORTSPEED_16GBIT; | |
458 | if (fsf_speed & ZFCP_FSF_PORTSPEED_NOT_NEGOTIATED) | |
459 | fdmi_speed |= FC_PORTSPEED_NOT_NEGOTIATED; | |
460 | return fdmi_speed; | |
461 | } | |
462 | ||
c41f8cbd SS |
463 | static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req) |
464 | { | |
9d05ce2c | 465 | struct fsf_qtcb_bottom_config *bottom = &req->qtcb->bottom.config; |
c41f8cbd SS |
466 | struct zfcp_adapter *adapter = req->adapter; |
467 | struct Scsi_Host *shost = adapter->scsi_host; | |
9d05ce2c | 468 | struct fc_els_flogi *nsp, *plogi; |
1da177e4 | 469 | |
9d05ce2c CS |
470 | /* adjust pointers for missing command code */ |
471 | nsp = (struct fc_els_flogi *) ((u8 *)&bottom->nport_serv_param | |
472 | - sizeof(u32)); | |
473 | plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload | |
474 | - sizeof(u32)); | |
1da177e4 | 475 | |
c41f8cbd SS |
476 | if (req->data) |
477 | memcpy(req->data, bottom, sizeof(*bottom)); | |
478 | ||
9d05ce2c CS |
479 | fc_host_port_name(shost) = nsp->fl_wwpn; |
480 | fc_host_node_name(shost) = nsp->fl_wwnn; | |
c41f8cbd SS |
481 | fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3; |
482 | ||
faf4cd85 | 483 | adapter->timer_ticks = bottom->timer_interval & ZFCP_FSF_TIMER_INT_MASK; |
8d88cf3f CS |
484 | adapter->stat_read_buf_num = max(bottom->status_read_buf_num, |
485 | (u16)FSF_STATUS_READS_RECOM); | |
c41f8cbd SS |
486 | |
487 | if (fc_host_permanent_port_name(shost) == -1) | |
488 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
489 | ||
9edf7d75 SM |
490 | zfcp_scsi_set_prot(adapter); |
491 | ||
492 | /* no error return above here, otherwise must fix call chains */ | |
493 | /* do not evaluate invalid fields */ | |
494 | if (req->qtcb->header.fsf_status == FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE) | |
495 | return 0; | |
496 | ||
497 | fc_host_port_id(shost) = ntoh24(bottom->s_id); | |
498 | fc_host_speed(shost) = | |
499 | zfcp_fsf_convert_portspeed(bottom->fc_link_speed); | |
500 | ||
501 | adapter->hydra_version = bottom->adapter_type; | |
502 | ||
c41f8cbd SS |
503 | switch (bottom->fc_topology) { |
504 | case FSF_TOPO_P2P: | |
800c0cad | 505 | adapter->peer_d_id = ntoh24(bottom->peer_d_id); |
9d05ce2c CS |
506 | adapter->peer_wwpn = plogi->fl_wwpn; |
507 | adapter->peer_wwnn = plogi->fl_wwnn; | |
c41f8cbd | 508 | fc_host_port_type(shost) = FC_PORTTYPE_PTP; |
c41f8cbd SS |
509 | break; |
510 | case FSF_TOPO_FABRIC: | |
511 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
c41f8cbd SS |
512 | break; |
513 | case FSF_TOPO_AL: | |
514 | fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; | |
dceab655 | 515 | /* fall through */ |
c41f8cbd | 516 | default: |
c41f8cbd | 517 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
518 | "Unknown or unsupported arbitrated loop " |
519 | "fibre channel topology detected\n"); | |
ea4a3a6a | 520 | zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1"); |
c41f8cbd | 521 | return -EIO; |
1da177e4 | 522 | } |
c41f8cbd | 523 | |
1da177e4 LT |
524 | return 0; |
525 | } | |
526 | ||
c41f8cbd | 527 | static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) |
553448f6 CS |
528 | { |
529 | struct zfcp_adapter *adapter = req->adapter; | |
c41f8cbd SS |
530 | struct fsf_qtcb *qtcb = req->qtcb; |
531 | struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config; | |
532 | struct Scsi_Host *shost = adapter->scsi_host; | |
553448f6 | 533 | |
c41f8cbd SS |
534 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
535 | return; | |
1da177e4 | 536 | |
c41f8cbd SS |
537 | adapter->fsf_lic_version = bottom->lic_version; |
538 | adapter->adapter_features = bottom->adapter_features; | |
539 | adapter->connection_features = bottom->connection_features; | |
540 | adapter->peer_wwpn = 0; | |
541 | adapter->peer_wwnn = 0; | |
542 | adapter->peer_d_id = 0; | |
8a36e453 | 543 | |
c41f8cbd SS |
544 | switch (qtcb->header.fsf_status) { |
545 | case FSF_GOOD: | |
546 | if (zfcp_fsf_exchange_config_evaluate(req)) | |
547 | return; | |
1da177e4 | 548 | |
c41f8cbd SS |
549 | if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { |
550 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
551 | "FCP adapter maximum QTCB size (%d bytes) " |
552 | "is too small\n", | |
553 | bottom->max_qtcb_size); | |
ea4a3a6a | 554 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1"); |
c41f8cbd SS |
555 | return; |
556 | } | |
557 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, | |
558 | &adapter->status); | |
1da177e4 | 559 | break; |
c41f8cbd SS |
560 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
561 | fc_host_node_name(shost) = 0; | |
562 | fc_host_port_name(shost) = 0; | |
563 | fc_host_port_id(shost) = 0; | |
564 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; | |
565 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; | |
566 | adapter->hydra_version = 0; | |
1da177e4 | 567 | |
f76ccaac DH |
568 | /* avoids adapter shutdown to be able to recognize |
569 | * events such as LINK UP */ | |
570 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, | |
571 | &adapter->status); | |
edaed859 | 572 | zfcp_fsf_link_down_info_eval(req, |
c41f8cbd | 573 | &qtcb->header.fsf_status_qual.link_down_info); |
9edf7d75 SM |
574 | if (zfcp_fsf_exchange_config_evaluate(req)) |
575 | return; | |
1da177e4 | 576 | break; |
c41f8cbd | 577 | default: |
ea4a3a6a | 578 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3"); |
c41f8cbd SS |
579 | return; |
580 | } | |
1da177e4 | 581 | |
c41f8cbd SS |
582 | if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) { |
583 | adapter->hardware_version = bottom->hardware_version; | |
584 | memcpy(fc_host_serial_number(shost), bottom->serial_number, | |
585 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
586 | EBCASC(fc_host_serial_number(shost), | |
587 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
588 | } | |
1da177e4 | 589 | |
c41f8cbd SS |
590 | if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) { |
591 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
592 | "The FCP adapter only supports newer " |
593 | "control block versions\n"); | |
ea4a3a6a | 594 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4"); |
c41f8cbd SS |
595 | return; |
596 | } | |
597 | if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) { | |
598 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
599 | "The FCP adapter only supports older " |
600 | "control block versions\n"); | |
ea4a3a6a | 601 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5"); |
c41f8cbd SS |
602 | } |
603 | } | |
1da177e4 | 604 | |
c41f8cbd SS |
605 | static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req) |
606 | { | |
607 | struct zfcp_adapter *adapter = req->adapter; | |
608 | struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port; | |
609 | struct Scsi_Host *shost = adapter->scsi_host; | |
1da177e4 | 610 | |
c41f8cbd SS |
611 | if (req->data) |
612 | memcpy(req->data, bottom, sizeof(*bottom)); | |
9eb69aff | 613 | |
0282985d | 614 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) { |
c41f8cbd | 615 | fc_host_permanent_port_name(shost) = bottom->wwpn; |
0282985d CS |
616 | fc_host_port_type(shost) = FC_PORTTYPE_NPIV; |
617 | } else | |
c41f8cbd SS |
618 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); |
619 | fc_host_maxframe_size(shost) = bottom->maximum_frame_size; | |
d2201977 SM |
620 | fc_host_supported_speeds(shost) = |
621 | zfcp_fsf_convert_portspeed(bottom->supported_speed); | |
2d8e62bb CS |
622 | memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types, |
623 | FC_FC4_LIST_SIZE); | |
624 | memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types, | |
625 | FC_FC4_LIST_SIZE); | |
c41f8cbd | 626 | } |
1da177e4 | 627 | |
c41f8cbd SS |
628 | static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) |
629 | { | |
c41f8cbd SS |
630 | struct fsf_qtcb *qtcb = req->qtcb; |
631 | ||
632 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
633 | return; | |
634 | ||
635 | switch (qtcb->header.fsf_status) { | |
636 | case FSF_GOOD: | |
637 | zfcp_fsf_exchange_port_evaluate(req); | |
c41f8cbd SS |
638 | break; |
639 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: | |
640 | zfcp_fsf_exchange_port_evaluate(req); | |
edaed859 | 641 | zfcp_fsf_link_down_info_eval(req, |
c41f8cbd | 642 | &qtcb->header.fsf_status_qual.link_down_info); |
aef4a983 | 643 | break; |
1da177e4 | 644 | } |
c41f8cbd | 645 | } |
d26ab06e | 646 | |
a4623c46 | 647 | static struct zfcp_fsf_req *zfcp_fsf_alloc(mempool_t *pool) |
c41f8cbd SS |
648 | { |
649 | struct zfcp_fsf_req *req; | |
a4623c46 SS |
650 | |
651 | if (likely(pool)) | |
652 | req = mempool_alloc(pool, GFP_ATOMIC); | |
653 | else | |
654 | req = kmalloc(sizeof(*req), GFP_ATOMIC); | |
655 | ||
656 | if (unlikely(!req)) | |
c41f8cbd | 657 | return NULL; |
a4623c46 | 658 | |
c41f8cbd | 659 | memset(req, 0, sizeof(*req)); |
88f2a977 | 660 | req->pool = pool; |
c41f8cbd SS |
661 | return req; |
662 | } | |
663 | ||
a4623c46 | 664 | static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool) |
c41f8cbd | 665 | { |
a4623c46 | 666 | struct fsf_qtcb *qtcb; |
c41f8cbd SS |
667 | |
668 | if (likely(pool)) | |
669 | qtcb = mempool_alloc(pool, GFP_ATOMIC); | |
670 | else | |
259afe2e | 671 | qtcb = kmem_cache_alloc(zfcp_fsf_qtcb_cache, GFP_ATOMIC); |
a4623c46 | 672 | |
c41f8cbd SS |
673 | if (unlikely(!qtcb)) |
674 | return NULL; | |
675 | ||
676 | memset(qtcb, 0, sizeof(*qtcb)); | |
a4623c46 | 677 | return qtcb; |
c41f8cbd SS |
678 | } |
679 | ||
564e1c86 | 680 | static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio, |
3ec90878 | 681 | u32 fsf_cmd, u8 sbtype, |
1674b405 | 682 | mempool_t *pool) |
1da177e4 | 683 | { |
564e1c86 | 684 | struct zfcp_adapter *adapter = qdio->adapter; |
a4623c46 | 685 | struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool); |
1da177e4 | 686 | |
c41f8cbd | 687 | if (unlikely(!req)) |
1e9b1643 | 688 | return ERR_PTR(-ENOMEM); |
1da177e4 | 689 | |
c41f8cbd SS |
690 | if (adapter->req_no == 0) |
691 | adapter->req_no++; | |
1da177e4 | 692 | |
c41f8cbd SS |
693 | INIT_LIST_HEAD(&req->list); |
694 | init_timer(&req->timer); | |
058b8647 | 695 | init_completion(&req->completion); |
1da177e4 | 696 | |
c41f8cbd SS |
697 | req->adapter = adapter; |
698 | req->fsf_command = fsf_cmd; | |
52bfb558 | 699 | req->req_id = adapter->req_no; |
c41f8cbd | 700 | |
a4623c46 SS |
701 | if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) { |
702 | if (likely(pool)) | |
703 | req->qtcb = zfcp_qtcb_alloc(adapter->pool.qtcb_pool); | |
704 | else | |
705 | req->qtcb = zfcp_qtcb_alloc(NULL); | |
706 | ||
707 | if (unlikely(!req->qtcb)) { | |
708 | zfcp_fsf_req_free(req); | |
709 | return ERR_PTR(-ENOMEM); | |
710 | } | |
711 | ||
5bdecd22 | 712 | req->seq_no = adapter->fsf_req_seq_no; |
564e1c86 | 713 | req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; |
c41f8cbd SS |
714 | req->qtcb->prefix.req_id = req->req_id; |
715 | req->qtcb->prefix.ulp_info = 26; | |
716 | req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command]; | |
717 | req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION; | |
718 | req->qtcb->header.req_handle = req->req_id; | |
719 | req->qtcb->header.fsf_command = req->fsf_command; | |
c41f8cbd SS |
720 | } |
721 | ||
1674b405 CS |
722 | zfcp_qdio_req_init(adapter->qdio, &req->qdio_req, req->req_id, sbtype, |
723 | req->qtcb, sizeof(struct fsf_qtcb)); | |
724 | ||
c41f8cbd | 725 | return req; |
1da177e4 LT |
726 | } |
727 | ||
c41f8cbd SS |
728 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) |
729 | { | |
730 | struct zfcp_adapter *adapter = req->adapter; | |
564e1c86 | 731 | struct zfcp_qdio *qdio = adapter->qdio; |
b6bd2fb9 | 732 | int with_qtcb = (req->qtcb != NULL); |
e60a6d69 | 733 | int req_id = req->req_id; |
c41f8cbd | 734 | |
b6bd2fb9 | 735 | zfcp_reqlist_add(adapter->req_list, req); |
c41f8cbd | 736 | |
706eca49 | 737 | req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q_free); |
1aae0560 | 738 | req->issued = get_tod_clock(); |
34c2b712 | 739 | if (zfcp_qdio_send(qdio, &req->qdio_req)) { |
c41f8cbd | 740 | del_timer(&req->timer); |
3765138a | 741 | /* lookup request again, list might have changed */ |
b6bd2fb9 | 742 | zfcp_reqlist_find_rm(adapter->req_list, req_id); |
ea4a3a6a | 743 | zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1"); |
c41f8cbd SS |
744 | return -EIO; |
745 | } | |
746 | ||
747 | /* Don't increase for unsolicited status */ | |
135ea137 | 748 | if (with_qtcb) |
c41f8cbd | 749 | adapter->fsf_req_seq_no++; |
52bfb558 | 750 | adapter->req_no++; |
c41f8cbd SS |
751 | |
752 | return 0; | |
753 | } | |
754 | ||
755 | /** | |
756 | * zfcp_fsf_status_read - send status read request | |
757 | * @adapter: pointer to struct zfcp_adapter | |
758 | * @req_flags: request flags | |
759 | * Returns: 0 on success, ERROR otherwise | |
1da177e4 | 760 | */ |
564e1c86 | 761 | int zfcp_fsf_status_read(struct zfcp_qdio *qdio) |
1da177e4 | 762 | { |
564e1c86 | 763 | struct zfcp_adapter *adapter = qdio->adapter; |
c41f8cbd SS |
764 | struct zfcp_fsf_req *req; |
765 | struct fsf_status_read_buffer *sr_buf; | |
c7b279ae | 766 | struct page *page; |
c41f8cbd | 767 | int retval = -EIO; |
1da177e4 | 768 | |
44a24cb3 | 769 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 770 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd SS |
771 | goto out; |
772 | ||
75a1408d MP |
773 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS, |
774 | SBAL_SFLAGS0_TYPE_STATUS, | |
a4623c46 | 775 | adapter->pool.status_read_req); |
025270f0 | 776 | if (IS_ERR(req)) { |
c41f8cbd SS |
777 | retval = PTR_ERR(req); |
778 | goto out; | |
1da177e4 LT |
779 | } |
780 | ||
c7b279ae CS |
781 | page = mempool_alloc(adapter->pool.sr_data, GFP_ATOMIC); |
782 | if (!page) { | |
c41f8cbd SS |
783 | retval = -ENOMEM; |
784 | goto failed_buf; | |
785 | } | |
c7b279ae | 786 | sr_buf = page_address(page); |
c41f8cbd SS |
787 | memset(sr_buf, 0, sizeof(*sr_buf)); |
788 | req->data = sr_buf; | |
1674b405 CS |
789 | |
790 | zfcp_qdio_fill_next(qdio, &req->qdio_req, sr_buf, sizeof(*sr_buf)); | |
791 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); | |
059c97d0 | 792 | |
c41f8cbd SS |
793 | retval = zfcp_fsf_req_send(req); |
794 | if (retval) | |
795 | goto failed_req_send; | |
1da177e4 | 796 | |
c41f8cbd SS |
797 | goto out; |
798 | ||
799 | failed_req_send: | |
a54ca0f6 | 800 | req->data = NULL; |
c7b279ae | 801 | mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data); |
c41f8cbd | 802 | failed_buf: |
a54ca0f6 | 803 | zfcp_dbf_hba_fsf_uss("fssr__1", req); |
c41f8cbd | 804 | zfcp_fsf_req_free(req); |
c41f8cbd | 805 | out: |
44a24cb3 | 806 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd SS |
807 | return retval; |
808 | } | |
809 | ||
810 | static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req) | |
811 | { | |
b62a8d9b | 812 | struct scsi_device *sdev = req->data; |
d436de8c | 813 | struct zfcp_scsi_dev *zfcp_sdev; |
c41f8cbd SS |
814 | union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual; |
815 | ||
816 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
817 | return; | |
818 | ||
d436de8c MP |
819 | zfcp_sdev = sdev_to_zfcp(sdev); |
820 | ||
c41f8cbd | 821 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 822 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd | 823 | if (fsq->word[0] == fsq->word[1]) { |
b62a8d9b | 824 | zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, |
ea4a3a6a | 825 | "fsafch1"); |
c41f8cbd | 826 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
827 | } |
828 | break; | |
1da177e4 | 829 | case FSF_LUN_HANDLE_NOT_VALID: |
c41f8cbd | 830 | if (fsq->word[0] == fsq->word[1]) { |
ea4a3a6a | 831 | zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fsafch2"); |
c41f8cbd | 832 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
833 | } |
834 | break; | |
1da177e4 | 835 | case FSF_FCP_COMMAND_DOES_NOT_EXIST: |
c41f8cbd | 836 | req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED; |
1da177e4 | 837 | break; |
1da177e4 | 838 | case FSF_PORT_BOXED: |
edaed859 SS |
839 | zfcp_erp_set_port_status(zfcp_sdev->port, |
840 | ZFCP_STATUS_COMMON_ACCESS_BOXED); | |
841 | zfcp_erp_port_reopen(zfcp_sdev->port, | |
ea4a3a6a | 842 | ZFCP_STATUS_COMMON_ERP_FAILED, "fsafch3"); |
4c571c65 | 843 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 844 | break; |
1da177e4 | 845 | case FSF_LUN_BOXED: |
edaed859 SS |
846 | zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED); |
847 | zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, | |
ea4a3a6a | 848 | "fsafch4"); |
4c571c65 | 849 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 850 | break; |
1da177e4 | 851 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 852 | switch (fsq->word[0]) { |
1da177e4 | 853 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
b62a8d9b | 854 | zfcp_fc_test_link(zfcp_sdev->port); |
dceab655 | 855 | /* fall through */ |
1da177e4 | 856 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 857 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 858 | break; |
1da177e4 LT |
859 | } |
860 | break; | |
1da177e4 | 861 | case FSF_GOOD: |
c41f8cbd | 862 | req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED; |
1da177e4 | 863 | break; |
1da177e4 | 864 | } |
1da177e4 LT |
865 | } |
866 | ||
867 | /** | |
b62a8d9b CS |
868 | * zfcp_fsf_abort_fcp_cmnd - abort running SCSI command |
869 | * @scmnd: The SCSI command to abort | |
c41f8cbd | 870 | * Returns: pointer to struct zfcp_fsf_req |
1da177e4 | 871 | */ |
1da177e4 | 872 | |
b62a8d9b | 873 | struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *scmnd) |
1da177e4 | 874 | { |
c41f8cbd | 875 | struct zfcp_fsf_req *req = NULL; |
b62a8d9b CS |
876 | struct scsi_device *sdev = scmnd->device; |
877 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); | |
878 | struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio; | |
879 | unsigned long old_req_id = (unsigned long) scmnd->host_scribble; | |
8a36e453 | 880 | |
44a24cb3 | 881 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 882 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 883 | goto out; |
564e1c86 | 884 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND, |
3ec90878 | 885 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 886 | qdio->adapter->pool.scsi_abort); |
633528c3 SS |
887 | if (IS_ERR(req)) { |
888 | req = NULL; | |
c41f8cbd | 889 | goto out; |
633528c3 | 890 | } |
2abbe866 | 891 | |
b62a8d9b | 892 | if (unlikely(!(atomic_read(&zfcp_sdev->status) & |
c41f8cbd SS |
893 | ZFCP_STATUS_COMMON_UNBLOCKED))) |
894 | goto out_error_free; | |
1da177e4 | 895 | |
1674b405 | 896 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 897 | |
6fbf25e8 | 898 | req->data = sdev; |
c41f8cbd | 899 | req->handler = zfcp_fsf_abort_fcp_command_handler; |
b62a8d9b CS |
900 | req->qtcb->header.lun_handle = zfcp_sdev->lun_handle; |
901 | req->qtcb->header.port_handle = zfcp_sdev->port->handle; | |
c41f8cbd SS |
902 | req->qtcb->bottom.support.req_handle = (u64) old_req_id; |
903 | ||
904 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); | |
905 | if (!zfcp_fsf_req_send(req)) | |
906 | goto out; | |
907 | ||
908 | out_error_free: | |
909 | zfcp_fsf_req_free(req); | |
910 | req = NULL; | |
911 | out: | |
44a24cb3 | 912 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd | 913 | return req; |
1da177e4 LT |
914 | } |
915 | ||
c41f8cbd | 916 | static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) |
1da177e4 | 917 | { |
c41f8cbd | 918 | struct zfcp_adapter *adapter = req->adapter; |
7c7dc196 | 919 | struct zfcp_fsf_ct_els *ct = req->data; |
c41f8cbd | 920 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1da177e4 | 921 | |
7c7dc196 | 922 | ct->status = -EINVAL; |
1da177e4 | 923 | |
c41f8cbd | 924 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
925 | goto skip_fsfstatus; |
926 | ||
1da177e4 | 927 | switch (header->fsf_status) { |
1da177e4 | 928 | case FSF_GOOD: |
0100998d | 929 | zfcp_dbf_san_res("fsscth2", req); |
7c7dc196 | 930 | ct->status = 0; |
1da177e4 | 931 | break; |
1da177e4 | 932 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 933 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 934 | break; |
1da177e4 | 935 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
936 | switch (header->fsf_status_qual.word[0]){ |
937 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 938 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 939 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 940 | break; |
1da177e4 LT |
941 | } |
942 | break; | |
1da177e4 | 943 | case FSF_PORT_BOXED: |
4c571c65 | 944 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 945 | break; |
c41f8cbd | 946 | case FSF_PORT_HANDLE_NOT_VALID: |
ea4a3a6a | 947 | zfcp_erp_adapter_reopen(adapter, 0, "fsscth1"); |
dceab655 | 948 | /* fall through */ |
c41f8cbd | 949 | case FSF_GENERIC_COMMAND_REJECTED: |
1da177e4 | 950 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 951 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 952 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 953 | case FSF_SBAL_MISMATCH: |
c41f8cbd | 954 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
955 | break; |
956 | } | |
957 | ||
958 | skip_fsfstatus: | |
7c7dc196 CS |
959 | if (ct->handler) |
960 | ct->handler(ct->handler_data); | |
c41f8cbd | 961 | } |
1da177e4 | 962 | |
1674b405 CS |
963 | static void zfcp_fsf_setup_ct_els_unchained(struct zfcp_qdio *qdio, |
964 | struct zfcp_qdio_req *q_req, | |
426f6059 CS |
965 | struct scatterlist *sg_req, |
966 | struct scatterlist *sg_resp) | |
967 | { | |
1674b405 CS |
968 | zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_req), sg_req->length); |
969 | zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_resp), sg_resp->length); | |
970 | zfcp_qdio_set_sbale_last(qdio, q_req); | |
426f6059 CS |
971 | } |
972 | ||
39eb7e9a CS |
973 | static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req, |
974 | struct scatterlist *sg_req, | |
01b04759 | 975 | struct scatterlist *sg_resp) |
c41f8cbd | 976 | { |
42428f74 | 977 | struct zfcp_adapter *adapter = req->adapter; |
86a9668a SS |
978 | struct zfcp_qdio *qdio = adapter->qdio; |
979 | struct fsf_qtcb *qtcb = req->qtcb; | |
42428f74 | 980 | u32 feat = adapter->adapter_features; |
c41f8cbd | 981 | |
86a9668a SS |
982 | if (zfcp_adapter_multi_buffer_active(adapter)) { |
983 | if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req)) | |
984 | return -EIO; | |
985 | if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp)) | |
986 | return -EIO; | |
39eb7e9a | 987 | |
86a9668a SS |
988 | zfcp_qdio_set_data_div(qdio, &req->qdio_req, |
989 | zfcp_qdio_sbale_count(sg_req)); | |
990 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); | |
991 | zfcp_qdio_set_scount(qdio, &req->qdio_req); | |
426f6059 CS |
992 | return 0; |
993 | } | |
994 | ||
995 | /* use single, unchained SBAL if it can hold the request */ | |
30b6777b | 996 | if (zfcp_qdio_sg_one_sbale(sg_req) && zfcp_qdio_sg_one_sbale(sg_resp)) { |
86a9668a | 997 | zfcp_fsf_setup_ct_els_unchained(qdio, &req->qdio_req, |
1674b405 | 998 | sg_req, sg_resp); |
39eb7e9a CS |
999 | return 0; |
1000 | } | |
1001 | ||
86a9668a SS |
1002 | if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) |
1003 | return -EOPNOTSUPP; | |
1004 | ||
1005 | if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req)) | |
9072df4d | 1006 | return -EIO; |
c41f8cbd | 1007 | |
86a9668a SS |
1008 | qtcb->bottom.support.req_buf_length = zfcp_qdio_real_bytes(sg_req); |
1009 | ||
1010 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); | |
1011 | zfcp_qdio_skip_to_last_sbale(qdio, &req->qdio_req); | |
1012 | ||
1013 | if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp)) | |
9072df4d | 1014 | return -EIO; |
86a9668a SS |
1015 | |
1016 | qtcb->bottom.support.resp_buf_length = zfcp_qdio_real_bytes(sg_resp); | |
1017 | ||
1018 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); | |
98fc4d5c | 1019 | |
b1a58985 CS |
1020 | return 0; |
1021 | } | |
1022 | ||
1023 | static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req, | |
1024 | struct scatterlist *sg_req, | |
1025 | struct scatterlist *sg_resp, | |
01b04759 | 1026 | unsigned int timeout) |
b1a58985 CS |
1027 | { |
1028 | int ret; | |
1029 | ||
01b04759 | 1030 | ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp); |
b1a58985 CS |
1031 | if (ret) |
1032 | return ret; | |
1033 | ||
98fc4d5c | 1034 | /* common settings for ct/gs and els requests */ |
51375ee8 SS |
1035 | if (timeout > 255) |
1036 | timeout = 255; /* max value accepted by hardware */ | |
98fc4d5c | 1037 | req->qtcb->bottom.support.service_class = FSF_CLASS_3; |
51375ee8 SS |
1038 | req->qtcb->bottom.support.timeout = timeout; |
1039 | zfcp_fsf_start_timer(req, (timeout + 10) * HZ); | |
c41f8cbd SS |
1040 | |
1041 | return 0; | |
1da177e4 LT |
1042 | } |
1043 | ||
1044 | /** | |
c41f8cbd SS |
1045 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) |
1046 | * @ct: pointer to struct zfcp_send_ct with data for request | |
1047 | * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req | |
1da177e4 | 1048 | */ |
7c7dc196 | 1049 | int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port, |
51375ee8 SS |
1050 | struct zfcp_fsf_ct_els *ct, mempool_t *pool, |
1051 | unsigned int timeout) | |
1da177e4 | 1052 | { |
564e1c86 | 1053 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
c41f8cbd SS |
1054 | struct zfcp_fsf_req *req; |
1055 | int ret = -EIO; | |
1da177e4 | 1056 | |
44a24cb3 | 1057 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1058 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1059 | goto out; |
1da177e4 | 1060 | |
1674b405 | 1061 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC, |
3ec90878 | 1062 | SBAL_SFLAGS0_TYPE_WRITE_READ, pool); |
09a46c6e | 1063 | |
025270f0 | 1064 | if (IS_ERR(req)) { |
c41f8cbd SS |
1065 | ret = PTR_ERR(req); |
1066 | goto out; | |
3f0ca62a CS |
1067 | } |
1068 | ||
09a46c6e | 1069 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
01b04759 | 1070 | ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp, timeout); |
553448f6 | 1071 | if (ret) |
1da177e4 | 1072 | goto failed_send; |
1da177e4 | 1073 | |
c41f8cbd | 1074 | req->handler = zfcp_fsf_send_ct_handler; |
5ab944f9 | 1075 | req->qtcb->header.port_handle = wka_port->handle; |
c41f8cbd SS |
1076 | req->data = ct; |
1077 | ||
2c55b750 | 1078 | zfcp_dbf_san_req("fssct_1", req, wka_port->d_id); |
1da177e4 | 1079 | |
c41f8cbd SS |
1080 | ret = zfcp_fsf_req_send(req); |
1081 | if (ret) | |
1082 | goto failed_send; | |
1da177e4 | 1083 | |
c41f8cbd | 1084 | goto out; |
1da177e4 | 1085 | |
c41f8cbd SS |
1086 | failed_send: |
1087 | zfcp_fsf_req_free(req); | |
c41f8cbd | 1088 | out: |
44a24cb3 | 1089 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd | 1090 | return ret; |
1da177e4 LT |
1091 | } |
1092 | ||
c41f8cbd | 1093 | static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1094 | { |
7c7dc196 | 1095 | struct zfcp_fsf_ct_els *send_els = req->data; |
c41f8cbd | 1096 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1da177e4 | 1097 | |
c41f8cbd | 1098 | send_els->status = -EINVAL; |
1da177e4 | 1099 | |
c41f8cbd | 1100 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
1101 | goto skip_fsfstatus; |
1102 | ||
1103 | switch (header->fsf_status) { | |
1da177e4 | 1104 | case FSF_GOOD: |
2c55b750 | 1105 | zfcp_dbf_san_res("fsselh1", req); |
c41f8cbd | 1106 | send_els->status = 0; |
1da177e4 | 1107 | break; |
1da177e4 | 1108 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 1109 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 1110 | break; |
1da177e4 | 1111 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1112 | switch (header->fsf_status_qual.word[0]){ |
1113 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1114 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1115 | case FSF_SQ_RETRY_IF_POSSIBLE: |
c41f8cbd | 1116 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1117 | break; |
1da177e4 LT |
1118 | } |
1119 | break; | |
1da177e4 | 1120 | case FSF_ELS_COMMAND_REJECTED: |
1da177e4 | 1121 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1122 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1123 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1124 | break; |
c41f8cbd | 1125 | case FSF_SBAL_MISMATCH: |
25985edc | 1126 | /* should never occur, avoided in zfcp_fsf_send_els */ |
c41f8cbd | 1127 | /* fall through */ |
1da177e4 | 1128 | default: |
c41f8cbd | 1129 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1130 | break; |
1131 | } | |
1da177e4 | 1132 | skip_fsfstatus: |
aa551daf | 1133 | if (send_els->handler) |
1da177e4 | 1134 | send_els->handler(send_els->handler_data); |
c41f8cbd | 1135 | } |
1da177e4 | 1136 | |
c41f8cbd SS |
1137 | /** |
1138 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) | |
1139 | * @els: pointer to struct zfcp_send_els with data for the command | |
1140 | */ | |
7c7dc196 | 1141 | int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id, |
51375ee8 | 1142 | struct zfcp_fsf_ct_els *els, unsigned int timeout) |
c41f8cbd SS |
1143 | { |
1144 | struct zfcp_fsf_req *req; | |
7c7dc196 | 1145 | struct zfcp_qdio *qdio = adapter->qdio; |
c41f8cbd SS |
1146 | int ret = -EIO; |
1147 | ||
44a24cb3 | 1148 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1149 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1150 | goto out; |
09a46c6e | 1151 | |
1674b405 | 1152 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS, |
3ec90878 | 1153 | SBAL_SFLAGS0_TYPE_WRITE_READ, NULL); |
09a46c6e | 1154 | |
025270f0 | 1155 | if (IS_ERR(req)) { |
c41f8cbd SS |
1156 | ret = PTR_ERR(req); |
1157 | goto out; | |
1158 | } | |
1159 | ||
09a46c6e | 1160 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
01b04759 | 1161 | |
86a9668a SS |
1162 | if (!zfcp_adapter_multi_buffer_active(adapter)) |
1163 | zfcp_qdio_sbal_limit(qdio, &req->qdio_req, 2); | |
01b04759 SS |
1164 | |
1165 | ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, timeout); | |
44cc76f2 | 1166 | |
c41f8cbd SS |
1167 | if (ret) |
1168 | goto failed_send; | |
1169 | ||
7c7dc196 | 1170 | hton24(req->qtcb->bottom.support.d_id, d_id); |
c41f8cbd | 1171 | req->handler = zfcp_fsf_send_els_handler; |
c41f8cbd SS |
1172 | req->data = els; |
1173 | ||
2c55b750 | 1174 | zfcp_dbf_san_req("fssels1", req, d_id); |
c41f8cbd | 1175 | |
c41f8cbd SS |
1176 | ret = zfcp_fsf_req_send(req); |
1177 | if (ret) | |
1178 | goto failed_send; | |
1179 | ||
1180 | goto out; | |
1181 | ||
1182 | failed_send: | |
1183 | zfcp_fsf_req_free(req); | |
1184 | out: | |
44a24cb3 | 1185 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd | 1186 | return ret; |
1da177e4 LT |
1187 | } |
1188 | ||
c41f8cbd | 1189 | int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1190 | { |
c41f8cbd | 1191 | struct zfcp_fsf_req *req; |
564e1c86 | 1192 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1193 | int retval = -EIO; |
1194 | ||
44a24cb3 | 1195 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1196 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1197 | goto out; |
09a46c6e | 1198 | |
564e1c86 | 1199 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, |
3ec90878 | 1200 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1201 | qdio->adapter->pool.erp_req); |
09a46c6e | 1202 | |
025270f0 | 1203 | if (IS_ERR(req)) { |
c41f8cbd SS |
1204 | retval = PTR_ERR(req); |
1205 | goto out; | |
1da177e4 LT |
1206 | } |
1207 | ||
09a46c6e | 1208 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1209 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1210 | |
c41f8cbd | 1211 | req->qtcb->bottom.config.feature_selection = |
9eb69aff | 1212 | FSF_FEATURE_NOTIFICATION_LOST | |
aef4a983 | 1213 | FSF_FEATURE_UPDATE_ALERT; |
c41f8cbd SS |
1214 | req->erp_action = erp_action; |
1215 | req->handler = zfcp_fsf_exchange_config_data_handler; | |
e60a6d69 | 1216 | erp_action->fsf_req_id = req->req_id; |
1da177e4 | 1217 | |
287ac01a | 1218 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1219 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1220 | if (retval) { |
c41f8cbd | 1221 | zfcp_fsf_req_free(req); |
e60a6d69 | 1222 | erp_action->fsf_req_id = 0; |
1da177e4 | 1223 | } |
c41f8cbd | 1224 | out: |
44a24cb3 | 1225 | spin_unlock_irq(&qdio->req_q_lock); |
52ef11a7 SS |
1226 | return retval; |
1227 | } | |
1da177e4 | 1228 | |
564e1c86 | 1229 | int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio, |
c41f8cbd | 1230 | struct fsf_qtcb_bottom_config *data) |
52ef11a7 | 1231 | { |
c41f8cbd SS |
1232 | struct zfcp_fsf_req *req = NULL; |
1233 | int retval = -EIO; | |
1234 | ||
44a24cb3 | 1235 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1236 | if (zfcp_qdio_sbal_get(qdio)) |
ada81b74 | 1237 | goto out_unlock; |
c41f8cbd | 1238 | |
1674b405 | 1239 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, |
3ec90878 | 1240 | SBAL_SFLAGS0_TYPE_READ, NULL); |
09a46c6e | 1241 | |
025270f0 | 1242 | if (IS_ERR(req)) { |
c41f8cbd | 1243 | retval = PTR_ERR(req); |
ada81b74 | 1244 | goto out_unlock; |
52ef11a7 SS |
1245 | } |
1246 | ||
1674b405 | 1247 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
c41f8cbd | 1248 | req->handler = zfcp_fsf_exchange_config_data_handler; |
52ef11a7 | 1249 | |
c41f8cbd | 1250 | req->qtcb->bottom.config.feature_selection = |
52ef11a7 SS |
1251 | FSF_FEATURE_NOTIFICATION_LOST | |
1252 | FSF_FEATURE_UPDATE_ALERT; | |
1253 | ||
1254 | if (data) | |
c41f8cbd | 1255 | req->data = data; |
52ef11a7 | 1256 | |
c41f8cbd SS |
1257 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
1258 | retval = zfcp_fsf_req_send(req); | |
44a24cb3 | 1259 | spin_unlock_irq(&qdio->req_q_lock); |
553448f6 | 1260 | if (!retval) |
058b8647 | 1261 | wait_for_completion(&req->completion); |
52ef11a7 | 1262 | |
c41f8cbd | 1263 | zfcp_fsf_req_free(req); |
ada81b74 | 1264 | return retval; |
52ef11a7 | 1265 | |
ada81b74 | 1266 | out_unlock: |
44a24cb3 | 1267 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1268 | return retval; |
1269 | } | |
1270 | ||
1da177e4 LT |
1271 | /** |
1272 | * zfcp_fsf_exchange_port_data - request information about local port | |
aef4a983 | 1273 | * @erp_action: ERP action for the adapter for which port data is requested |
c41f8cbd | 1274 | * Returns: 0 on success, error otherwise |
1da177e4 | 1275 | */ |
c41f8cbd | 1276 | int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1277 | { |
564e1c86 | 1278 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd | 1279 | struct zfcp_fsf_req *req; |
c41f8cbd | 1280 | int retval = -EIO; |
1da177e4 | 1281 | |
564e1c86 | 1282 | if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1283 | return -EOPNOTSUPP; |
1da177e4 | 1284 | |
44a24cb3 | 1285 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1286 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1287 | goto out; |
09a46c6e | 1288 | |
564e1c86 | 1289 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, |
3ec90878 | 1290 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1291 | qdio->adapter->pool.erp_req); |
09a46c6e | 1292 | |
025270f0 | 1293 | if (IS_ERR(req)) { |
c41f8cbd SS |
1294 | retval = PTR_ERR(req); |
1295 | goto out; | |
aef4a983 MS |
1296 | } |
1297 | ||
09a46c6e | 1298 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1299 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1300 | |
c41f8cbd SS |
1301 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1302 | req->erp_action = erp_action; | |
e60a6d69 | 1303 | erp_action->fsf_req_id = req->req_id; |
52ef11a7 | 1304 | |
287ac01a | 1305 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1306 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1307 | if (retval) { |
c41f8cbd | 1308 | zfcp_fsf_req_free(req); |
e60a6d69 | 1309 | erp_action->fsf_req_id = 0; |
52ef11a7 | 1310 | } |
c41f8cbd | 1311 | out: |
44a24cb3 | 1312 | spin_unlock_irq(&qdio->req_q_lock); |
52ef11a7 SS |
1313 | return retval; |
1314 | } | |
1315 | ||
52ef11a7 SS |
1316 | /** |
1317 | * zfcp_fsf_exchange_port_data_sync - request information about local port | |
564e1c86 | 1318 | * @qdio: pointer to struct zfcp_qdio |
c41f8cbd SS |
1319 | * @data: pointer to struct fsf_qtcb_bottom_port |
1320 | * Returns: 0 on success, error otherwise | |
52ef11a7 | 1321 | */ |
564e1c86 | 1322 | int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio, |
c41f8cbd | 1323 | struct fsf_qtcb_bottom_port *data) |
52ef11a7 | 1324 | { |
c41f8cbd SS |
1325 | struct zfcp_fsf_req *req = NULL; |
1326 | int retval = -EIO; | |
52ef11a7 | 1327 | |
564e1c86 | 1328 | if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1329 | return -EOPNOTSUPP; |
52ef11a7 | 1330 | |
44a24cb3 | 1331 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1332 | if (zfcp_qdio_sbal_get(qdio)) |
ada81b74 | 1333 | goto out_unlock; |
c41f8cbd | 1334 | |
1674b405 | 1335 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, |
3ec90878 | 1336 | SBAL_SFLAGS0_TYPE_READ, NULL); |
09a46c6e | 1337 | |
025270f0 | 1338 | if (IS_ERR(req)) { |
c41f8cbd | 1339 | retval = PTR_ERR(req); |
ada81b74 | 1340 | goto out_unlock; |
1da177e4 LT |
1341 | } |
1342 | ||
52ef11a7 | 1343 | if (data) |
c41f8cbd | 1344 | req->data = data; |
52ef11a7 | 1345 | |
1674b405 | 1346 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
52ef11a7 | 1347 | |
c41f8cbd SS |
1348 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1349 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1350 | retval = zfcp_fsf_req_send(req); | |
44a24cb3 | 1351 | spin_unlock_irq(&qdio->req_q_lock); |
ada81b74 | 1352 | |
553448f6 | 1353 | if (!retval) |
058b8647 SS |
1354 | wait_for_completion(&req->completion); |
1355 | ||
c41f8cbd | 1356 | zfcp_fsf_req_free(req); |
1da177e4 | 1357 | |
1da177e4 | 1358 | return retval; |
ada81b74 CS |
1359 | |
1360 | out_unlock: | |
44a24cb3 | 1361 | spin_unlock_irq(&qdio->req_q_lock); |
ada81b74 | 1362 | return retval; |
1da177e4 LT |
1363 | } |
1364 | ||
c41f8cbd | 1365 | static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1366 | { |
c41f8cbd SS |
1367 | struct zfcp_port *port = req->data; |
1368 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
9d05ce2c | 1369 | struct fc_els_flogi *plogi; |
1da177e4 | 1370 | |
c41f8cbd | 1371 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
a17c5855 | 1372 | goto out; |
1da177e4 | 1373 | |
1da177e4 | 1374 | switch (header->fsf_status) { |
1da177e4 | 1375 | case FSF_PORT_ALREADY_OPEN: |
1da177e4 | 1376 | break; |
1da177e4 | 1377 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: |
c41f8cbd | 1378 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 1379 | "Not enough FCP adapter resources to open " |
7ba58c9c SS |
1380 | "remote port 0x%016Lx\n", |
1381 | (unsigned long long)port->wwpn); | |
edaed859 SS |
1382 | zfcp_erp_set_port_status(port, |
1383 | ZFCP_STATUS_COMMON_ERP_FAILED); | |
c41f8cbd | 1384 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1385 | break; |
1da177e4 | 1386 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1387 | switch (header->fsf_status_qual.word[0]) { |
1388 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1389 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1390 | case FSF_SQ_NO_RETRY_POSSIBLE: |
c41f8cbd | 1391 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1392 | break; |
1393 | } | |
1394 | break; | |
1da177e4 | 1395 | case FSF_GOOD: |
1da177e4 | 1396 | port->handle = header->port_handle; |
1da177e4 LT |
1397 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN | |
1398 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
1b33ef23 | 1399 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_BOXED, |
d736a27b | 1400 | &port->status); |
1da177e4 LT |
1401 | /* check whether D_ID has changed during open */ |
1402 | /* | |
1403 | * FIXME: This check is not airtight, as the FCP channel does | |
1404 | * not monitor closures of target port connections caused on | |
1405 | * the remote side. Thus, they might miss out on invalidating | |
1406 | * locally cached WWPNs (and other N_Port parameters) of gone | |
1407 | * target ports. So, our heroic attempt to make things safe | |
1408 | * could be undermined by 'open port' response data tagged with | |
1409 | * obsolete WWPNs. Another reason to monitor potential | |
1410 | * connection closures ourself at least (by interpreting | |
1411 | * incoming ELS' and unsolicited status). It just crosses my | |
1412 | * mind that one should be able to cross-check by means of | |
1413 | * another GID_PN straight after a port has been opened. | |
1414 | * Alternately, an ADISC/PDISC ELS should suffice, as well. | |
1415 | */ | |
9d05ce2c | 1416 | plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els; |
39eb7e9a | 1417 | if (req->qtcb->bottom.support.els1_length >= |
9d05ce2c | 1418 | FSF_PLOGI_MIN_LEN) |
c41f8cbd | 1419 | zfcp_fc_plogi_evaluate(port, plogi); |
1da177e4 | 1420 | break; |
1da177e4 | 1421 | case FSF_UNKNOWN_OP_SUBTYPE: |
c41f8cbd | 1422 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1423 | break; |
1424 | } | |
a17c5855 MP |
1425 | |
1426 | out: | |
615f59e0 | 1427 | put_device(&port->dev); |
1da177e4 LT |
1428 | } |
1429 | ||
c41f8cbd SS |
1430 | /** |
1431 | * zfcp_fsf_open_port - create and send open port request | |
1432 | * @erp_action: pointer to struct zfcp_erp_action | |
1433 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1434 | */ |
c41f8cbd | 1435 | int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1436 | { |
564e1c86 | 1437 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
a17c5855 | 1438 | struct zfcp_port *port = erp_action->port; |
564e1c86 | 1439 | struct zfcp_fsf_req *req; |
c41f8cbd SS |
1440 | int retval = -EIO; |
1441 | ||
44a24cb3 | 1442 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1443 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd SS |
1444 | goto out; |
1445 | ||
564e1c86 | 1446 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID, |
3ec90878 | 1447 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1448 | qdio->adapter->pool.erp_req); |
09a46c6e | 1449 | |
025270f0 | 1450 | if (IS_ERR(req)) { |
c41f8cbd | 1451 | retval = PTR_ERR(req); |
1da177e4 | 1452 | goto out; |
c41f8cbd | 1453 | } |
1da177e4 | 1454 | |
09a46c6e | 1455 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1456 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1457 | |
c41f8cbd | 1458 | req->handler = zfcp_fsf_open_port_handler; |
800c0cad | 1459 | hton24(req->qtcb->bottom.support.d_id, port->d_id); |
a17c5855 | 1460 | req->data = port; |
c41f8cbd | 1461 | req->erp_action = erp_action; |
e60a6d69 | 1462 | erp_action->fsf_req_id = req->req_id; |
615f59e0 | 1463 | get_device(&port->dev); |
c41f8cbd | 1464 | |
287ac01a | 1465 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1466 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1467 | if (retval) { |
c41f8cbd | 1468 | zfcp_fsf_req_free(req); |
e60a6d69 | 1469 | erp_action->fsf_req_id = 0; |
615f59e0 | 1470 | put_device(&port->dev); |
1da177e4 | 1471 | } |
c41f8cbd | 1472 | out: |
44a24cb3 | 1473 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1474 | return retval; |
1475 | } | |
1476 | ||
c41f8cbd | 1477 | static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1478 | { |
c41f8cbd | 1479 | struct zfcp_port *port = req->data; |
1da177e4 | 1480 | |
c41f8cbd | 1481 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1482 | return; |
1da177e4 | 1483 | |
c41f8cbd | 1484 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1485 | case FSF_PORT_HANDLE_NOT_VALID: |
ea4a3a6a | 1486 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1"); |
c41f8cbd | 1487 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1488 | break; |
1da177e4 | 1489 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 | 1490 | break; |
1da177e4 | 1491 | case FSF_GOOD: |
edaed859 | 1492 | zfcp_erp_clear_port_status(port, ZFCP_STATUS_COMMON_OPEN); |
1da177e4 | 1493 | break; |
1da177e4 | 1494 | } |
1da177e4 LT |
1495 | } |
1496 | ||
c41f8cbd SS |
1497 | /** |
1498 | * zfcp_fsf_close_port - create and send close port request | |
1499 | * @erp_action: pointer to struct zfcp_erp_action | |
1500 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1501 | */ |
c41f8cbd | 1502 | int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1503 | { |
564e1c86 | 1504 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1505 | struct zfcp_fsf_req *req; |
1506 | int retval = -EIO; | |
1507 | ||
44a24cb3 | 1508 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1509 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd SS |
1510 | goto out; |
1511 | ||
564e1c86 | 1512 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT, |
3ec90878 | 1513 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1514 | qdio->adapter->pool.erp_req); |
09a46c6e | 1515 | |
025270f0 | 1516 | if (IS_ERR(req)) { |
c41f8cbd | 1517 | retval = PTR_ERR(req); |
1da177e4 | 1518 | goto out; |
c41f8cbd | 1519 | } |
1da177e4 | 1520 | |
09a46c6e | 1521 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1522 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1523 | |
c41f8cbd SS |
1524 | req->handler = zfcp_fsf_close_port_handler; |
1525 | req->data = erp_action->port; | |
1526 | req->erp_action = erp_action; | |
1527 | req->qtcb->header.port_handle = erp_action->port->handle; | |
e60a6d69 | 1528 | erp_action->fsf_req_id = req->req_id; |
c41f8cbd | 1529 | |
287ac01a | 1530 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1531 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1532 | if (retval) { |
c41f8cbd | 1533 | zfcp_fsf_req_free(req); |
e60a6d69 | 1534 | erp_action->fsf_req_id = 0; |
1da177e4 | 1535 | } |
c41f8cbd | 1536 | out: |
44a24cb3 | 1537 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1538 | return retval; |
1539 | } | |
1540 | ||
5ab944f9 SS |
1541 | static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req) |
1542 | { | |
bd0072ec | 1543 | struct zfcp_fc_wka_port *wka_port = req->data; |
5ab944f9 SS |
1544 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1545 | ||
1546 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
bd0072ec | 1547 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 SS |
1548 | goto out; |
1549 | } | |
1550 | ||
1551 | switch (header->fsf_status) { | |
1552 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: | |
1553 | dev_warn(&req->adapter->ccw_device->dev, | |
1554 | "Opening WKA port 0x%x failed\n", wka_port->d_id); | |
dceab655 | 1555 | /* fall through */ |
5ab944f9 SS |
1556 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1557 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
bd0072ec | 1558 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 | 1559 | break; |
5ab944f9 SS |
1560 | case FSF_GOOD: |
1561 | wka_port->handle = header->port_handle; | |
27f492cc SS |
1562 | /* fall through */ |
1563 | case FSF_PORT_ALREADY_OPEN: | |
bd0072ec | 1564 | wka_port->status = ZFCP_FC_WKA_PORT_ONLINE; |
5ab944f9 SS |
1565 | } |
1566 | out: | |
1567 | wake_up(&wka_port->completion_wq); | |
1568 | } | |
1569 | ||
1570 | /** | |
1571 | * zfcp_fsf_open_wka_port - create and send open wka-port request | |
bd0072ec | 1572 | * @wka_port: pointer to struct zfcp_fc_wka_port |
5ab944f9 SS |
1573 | * Returns: 0 on success, error otherwise |
1574 | */ | |
bd0072ec | 1575 | int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port) |
5ab944f9 | 1576 | { |
564e1c86 | 1577 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
5ab944f9 SS |
1578 | struct zfcp_fsf_req *req; |
1579 | int retval = -EIO; | |
1580 | ||
44a24cb3 | 1581 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1582 | if (zfcp_qdio_sbal_get(qdio)) |
5ab944f9 SS |
1583 | goto out; |
1584 | ||
564e1c86 | 1585 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID, |
3ec90878 | 1586 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1587 | qdio->adapter->pool.erp_req); |
09a46c6e | 1588 | |
4e7d7af4 | 1589 | if (IS_ERR(req)) { |
5ab944f9 SS |
1590 | retval = PTR_ERR(req); |
1591 | goto out; | |
1592 | } | |
1593 | ||
09a46c6e | 1594 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1595 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
5ab944f9 SS |
1596 | |
1597 | req->handler = zfcp_fsf_open_wka_port_handler; | |
800c0cad | 1598 | hton24(req->qtcb->bottom.support.d_id, wka_port->d_id); |
5ab944f9 SS |
1599 | req->data = wka_port; |
1600 | ||
1601 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1602 | retval = zfcp_fsf_req_send(req); | |
1603 | if (retval) | |
1604 | zfcp_fsf_req_free(req); | |
1605 | out: | |
44a24cb3 | 1606 | spin_unlock_irq(&qdio->req_q_lock); |
5ab944f9 SS |
1607 | return retval; |
1608 | } | |
1609 | ||
1610 | static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req) | |
1611 | { | |
bd0072ec | 1612 | struct zfcp_fc_wka_port *wka_port = req->data; |
5ab944f9 SS |
1613 | |
1614 | if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) { | |
1615 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
ea4a3a6a | 1616 | zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1"); |
5ab944f9 SS |
1617 | } |
1618 | ||
bd0072ec | 1619 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 SS |
1620 | wake_up(&wka_port->completion_wq); |
1621 | } | |
1622 | ||
1623 | /** | |
1624 | * zfcp_fsf_close_wka_port - create and send close wka port request | |
bd0072ec | 1625 | * @wka_port: WKA port to open |
5ab944f9 SS |
1626 | * Returns: 0 on success, error otherwise |
1627 | */ | |
bd0072ec | 1628 | int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port) |
5ab944f9 | 1629 | { |
564e1c86 | 1630 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
5ab944f9 SS |
1631 | struct zfcp_fsf_req *req; |
1632 | int retval = -EIO; | |
1633 | ||
44a24cb3 | 1634 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1635 | if (zfcp_qdio_sbal_get(qdio)) |
5ab944f9 SS |
1636 | goto out; |
1637 | ||
564e1c86 | 1638 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT, |
3ec90878 | 1639 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1640 | qdio->adapter->pool.erp_req); |
09a46c6e | 1641 | |
4e7d7af4 | 1642 | if (IS_ERR(req)) { |
5ab944f9 SS |
1643 | retval = PTR_ERR(req); |
1644 | goto out; | |
1645 | } | |
1646 | ||
09a46c6e | 1647 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1648 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
5ab944f9 SS |
1649 | |
1650 | req->handler = zfcp_fsf_close_wka_port_handler; | |
1651 | req->data = wka_port; | |
1652 | req->qtcb->header.port_handle = wka_port->handle; | |
1653 | ||
1654 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1655 | retval = zfcp_fsf_req_send(req); | |
1656 | if (retval) | |
1657 | zfcp_fsf_req_free(req); | |
1658 | out: | |
44a24cb3 | 1659 | spin_unlock_irq(&qdio->req_q_lock); |
5ab944f9 SS |
1660 | return retval; |
1661 | } | |
1662 | ||
c41f8cbd | 1663 | static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1664 | { |
c41f8cbd SS |
1665 | struct zfcp_port *port = req->data; |
1666 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
b62a8d9b | 1667 | struct scsi_device *sdev; |
1da177e4 | 1668 | |
c41f8cbd | 1669 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
a5b11dda | 1670 | return; |
1da177e4 | 1671 | |
1da177e4 | 1672 | switch (header->fsf_status) { |
1da177e4 | 1673 | case FSF_PORT_HANDLE_NOT_VALID: |
ea4a3a6a | 1674 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1"); |
c41f8cbd | 1675 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1676 | break; |
1da177e4 | 1677 | case FSF_PORT_BOXED: |
5c815d15 CS |
1678 | /* can't use generic zfcp_erp_modify_port_status because |
1679 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */ | |
1680 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
b62a8d9b CS |
1681 | shost_for_each_device(sdev, port->adapter->scsi_host) |
1682 | if (sdev_to_zfcp(sdev)->port == port) | |
1683 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, | |
1684 | &sdev_to_zfcp(sdev)->status); | |
edaed859 SS |
1685 | zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ACCESS_BOXED); |
1686 | zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, | |
ea4a3a6a | 1687 | "fscpph2"); |
4c571c65 | 1688 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1689 | break; |
1da177e4 | 1690 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1691 | switch (header->fsf_status_qual.word[0]) { |
1692 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
c41f8cbd | 1693 | /* fall through */ |
1da177e4 | 1694 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1695 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1696 | break; |
1da177e4 LT |
1697 | } |
1698 | break; | |
1da177e4 | 1699 | case FSF_GOOD: |
1da177e4 LT |
1700 | /* can't use generic zfcp_erp_modify_port_status because |
1701 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port | |
1702 | */ | |
1703 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); | |
b62a8d9b CS |
1704 | shost_for_each_device(sdev, port->adapter->scsi_host) |
1705 | if (sdev_to_zfcp(sdev)->port == port) | |
1706 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, | |
1707 | &sdev_to_zfcp(sdev)->status); | |
1da177e4 | 1708 | break; |
1da177e4 | 1709 | } |
1da177e4 LT |
1710 | } |
1711 | ||
c41f8cbd SS |
1712 | /** |
1713 | * zfcp_fsf_close_physical_port - close physical port | |
1714 | * @erp_action: pointer to struct zfcp_erp_action | |
1715 | * Returns: 0 on success | |
1da177e4 | 1716 | */ |
c41f8cbd | 1717 | int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1718 | { |
564e1c86 | 1719 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1720 | struct zfcp_fsf_req *req; |
1721 | int retval = -EIO; | |
1722 | ||
44a24cb3 | 1723 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1724 | if (zfcp_qdio_sbal_get(qdio)) |
1da177e4 | 1725 | goto out; |
1da177e4 | 1726 | |
564e1c86 | 1727 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT, |
3ec90878 | 1728 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1729 | qdio->adapter->pool.erp_req); |
09a46c6e | 1730 | |
025270f0 | 1731 | if (IS_ERR(req)) { |
c41f8cbd SS |
1732 | retval = PTR_ERR(req); |
1733 | goto out; | |
1734 | } | |
1da177e4 | 1735 | |
09a46c6e | 1736 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1737 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1738 | |
c41f8cbd SS |
1739 | req->data = erp_action->port; |
1740 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1741 | req->erp_action = erp_action; | |
1742 | req->handler = zfcp_fsf_close_physical_port_handler; | |
e60a6d69 | 1743 | erp_action->fsf_req_id = req->req_id; |
c41f8cbd | 1744 | |
287ac01a | 1745 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1746 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1747 | if (retval) { |
c41f8cbd | 1748 | zfcp_fsf_req_free(req); |
e60a6d69 | 1749 | erp_action->fsf_req_id = 0; |
1da177e4 | 1750 | } |
c41f8cbd | 1751 | out: |
44a24cb3 | 1752 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1753 | return retval; |
1754 | } | |
1755 | ||
b62a8d9b | 1756 | static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1757 | { |
c41f8cbd | 1758 | struct zfcp_adapter *adapter = req->adapter; |
b62a8d9b | 1759 | struct scsi_device *sdev = req->data; |
d436de8c | 1760 | struct zfcp_scsi_dev *zfcp_sdev; |
c41f8cbd | 1761 | struct fsf_qtcb_header *header = &req->qtcb->header; |
663e0890 | 1762 | union fsf_status_qual *qual = &header->fsf_status_qual; |
1da177e4 | 1763 | |
c41f8cbd | 1764 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1765 | return; |
1da177e4 | 1766 | |
d436de8c MP |
1767 | zfcp_sdev = sdev_to_zfcp(sdev); |
1768 | ||
1da177e4 | 1769 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
663e0890 | 1770 | ZFCP_STATUS_COMMON_ACCESS_BOXED, |
b62a8d9b | 1771 | &zfcp_sdev->status); |
1da177e4 | 1772 | |
1da177e4 LT |
1773 | switch (header->fsf_status) { |
1774 | ||
1775 | case FSF_PORT_HANDLE_NOT_VALID: | |
ea4a3a6a | 1776 | zfcp_erp_adapter_reopen(adapter, 0, "fsouh_1"); |
c41f8cbd | 1777 | /* fall through */ |
1da177e4 | 1778 | case FSF_LUN_ALREADY_OPEN: |
1da177e4 | 1779 | break; |
1da177e4 | 1780 | case FSF_PORT_BOXED: |
edaed859 SS |
1781 | zfcp_erp_set_port_status(zfcp_sdev->port, |
1782 | ZFCP_STATUS_COMMON_ACCESS_BOXED); | |
1783 | zfcp_erp_port_reopen(zfcp_sdev->port, | |
ea4a3a6a | 1784 | ZFCP_STATUS_COMMON_ERP_FAILED, "fsouh_2"); |
4c571c65 | 1785 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1786 | break; |
1da177e4 | 1787 | case FSF_LUN_SHARING_VIOLATION: |
663e0890 MP |
1788 | if (qual->word[0]) |
1789 | dev_warn(&zfcp_sdev->port->adapter->ccw_device->dev, | |
1790 | "LUN 0x%Lx on port 0x%Lx is already in " | |
1791 | "use by CSS%d, MIF Image ID %x\n", | |
1792 | zfcp_scsi_dev_lun(sdev), | |
1793 | (unsigned long long)zfcp_sdev->port->wwpn, | |
1794 | qual->fsf_queue_designator.cssid, | |
1795 | qual->fsf_queue_designator.hla); | |
1796 | zfcp_erp_set_lun_status(sdev, | |
1797 | ZFCP_STATUS_COMMON_ERP_FAILED | | |
1798 | ZFCP_STATUS_COMMON_ACCESS_DENIED); | |
c41f8cbd | 1799 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1800 | break; |
1da177e4 | 1801 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: |
c41f8cbd | 1802 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1803 | "No handle is available for LUN " |
1804 | "0x%016Lx on port 0x%016Lx\n", | |
b62a8d9b CS |
1805 | (unsigned long long)zfcp_scsi_dev_lun(sdev), |
1806 | (unsigned long long)zfcp_sdev->port->wwpn); | |
edaed859 | 1807 | zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ERP_FAILED); |
c41f8cbd SS |
1808 | /* fall through */ |
1809 | case FSF_INVALID_COMMAND_OPTION: | |
1810 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1811 | break; |
1da177e4 | 1812 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1813 | switch (header->fsf_status_qual.word[0]) { |
1814 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
b62a8d9b | 1815 | zfcp_fc_test_link(zfcp_sdev->port); |
c41f8cbd | 1816 | /* fall through */ |
1da177e4 | 1817 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1818 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1819 | break; |
1da177e4 LT |
1820 | } |
1821 | break; | |
1822 | ||
1da177e4 | 1823 | case FSF_GOOD: |
b62a8d9b CS |
1824 | zfcp_sdev->lun_handle = header->lun_handle; |
1825 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status); | |
1da177e4 | 1826 | break; |
1da177e4 | 1827 | } |
1da177e4 LT |
1828 | } |
1829 | ||
c41f8cbd | 1830 | /** |
b62a8d9b | 1831 | * zfcp_fsf_open_lun - open LUN |
c41f8cbd SS |
1832 | * @erp_action: pointer to struct zfcp_erp_action |
1833 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1834 | */ |
b62a8d9b | 1835 | int zfcp_fsf_open_lun(struct zfcp_erp_action *erp_action) |
1da177e4 | 1836 | { |
c41f8cbd | 1837 | struct zfcp_adapter *adapter = erp_action->adapter; |
564e1c86 | 1838 | struct zfcp_qdio *qdio = adapter->qdio; |
c41f8cbd SS |
1839 | struct zfcp_fsf_req *req; |
1840 | int retval = -EIO; | |
1841 | ||
44a24cb3 | 1842 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1843 | if (zfcp_qdio_sbal_get(qdio)) |
1da177e4 | 1844 | goto out; |
1da177e4 | 1845 | |
564e1c86 | 1846 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN, |
3ec90878 | 1847 | SBAL_SFLAGS0_TYPE_READ, |
a4623c46 | 1848 | adapter->pool.erp_req); |
09a46c6e | 1849 | |
025270f0 | 1850 | if (IS_ERR(req)) { |
c41f8cbd SS |
1851 | retval = PTR_ERR(req); |
1852 | goto out; | |
1853 | } | |
1854 | ||
09a46c6e | 1855 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1856 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1857 | |
c41f8cbd | 1858 | req->qtcb->header.port_handle = erp_action->port->handle; |
b62a8d9b CS |
1859 | req->qtcb->bottom.support.fcp_lun = zfcp_scsi_dev_lun(erp_action->sdev); |
1860 | req->handler = zfcp_fsf_open_lun_handler; | |
1861 | req->data = erp_action->sdev; | |
c41f8cbd | 1862 | req->erp_action = erp_action; |
e60a6d69 | 1863 | erp_action->fsf_req_id = req->req_id; |
c41f8cbd SS |
1864 | |
1865 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) | |
1866 | req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING; | |
1867 | ||
287ac01a | 1868 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1869 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1870 | if (retval) { |
c41f8cbd | 1871 | zfcp_fsf_req_free(req); |
e60a6d69 | 1872 | erp_action->fsf_req_id = 0; |
1da177e4 | 1873 | } |
c41f8cbd | 1874 | out: |
44a24cb3 | 1875 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1876 | return retval; |
1877 | } | |
1878 | ||
b62a8d9b | 1879 | static void zfcp_fsf_close_lun_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1880 | { |
b62a8d9b | 1881 | struct scsi_device *sdev = req->data; |
d436de8c | 1882 | struct zfcp_scsi_dev *zfcp_sdev; |
1da177e4 | 1883 | |
c41f8cbd | 1884 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1885 | return; |
1da177e4 | 1886 | |
d436de8c MP |
1887 | zfcp_sdev = sdev_to_zfcp(sdev); |
1888 | ||
c41f8cbd | 1889 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1890 | case FSF_PORT_HANDLE_NOT_VALID: |
ea4a3a6a | 1891 | zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fscuh_1"); |
c41f8cbd | 1892 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1893 | break; |
1da177e4 | 1894 | case FSF_LUN_HANDLE_NOT_VALID: |
ea4a3a6a | 1895 | zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fscuh_2"); |
c41f8cbd | 1896 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1897 | break; |
1da177e4 | 1898 | case FSF_PORT_BOXED: |
edaed859 SS |
1899 | zfcp_erp_set_port_status(zfcp_sdev->port, |
1900 | ZFCP_STATUS_COMMON_ACCESS_BOXED); | |
1901 | zfcp_erp_port_reopen(zfcp_sdev->port, | |
ea4a3a6a | 1902 | ZFCP_STATUS_COMMON_ERP_FAILED, "fscuh_3"); |
4c571c65 | 1903 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1904 | break; |
1da177e4 | 1905 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 1906 | switch (req->qtcb->header.fsf_status_qual.word[0]) { |
1da177e4 | 1907 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
b62a8d9b | 1908 | zfcp_fc_test_link(zfcp_sdev->port); |
c41f8cbd | 1909 | /* fall through */ |
1da177e4 | 1910 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1911 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1912 | break; |
1913 | } | |
1914 | break; | |
1da177e4 | 1915 | case FSF_GOOD: |
b62a8d9b | 1916 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status); |
1da177e4 | 1917 | break; |
1da177e4 | 1918 | } |
1da177e4 LT |
1919 | } |
1920 | ||
1921 | /** | |
b62a8d9b CS |
1922 | * zfcp_fsf_close_LUN - close LUN |
1923 | * @erp_action: pointer to erp_action triggering the "close LUN" | |
c41f8cbd | 1924 | * Returns: 0 on success, error otherwise |
1da177e4 | 1925 | */ |
b62a8d9b | 1926 | int zfcp_fsf_close_lun(struct zfcp_erp_action *erp_action) |
1da177e4 | 1927 | { |
564e1c86 | 1928 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
b62a8d9b | 1929 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(erp_action->sdev); |
c41f8cbd SS |
1930 | struct zfcp_fsf_req *req; |
1931 | int retval = -EIO; | |
1da177e4 | 1932 | |
44a24cb3 | 1933 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1934 | if (zfcp_qdio_sbal_get(qdio)) |
1da177e4 | 1935 | goto out; |
09a46c6e | 1936 | |
564e1c86 | 1937 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN, |
3ec90878 | 1938 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1939 | qdio->adapter->pool.erp_req); |
09a46c6e | 1940 | |
025270f0 | 1941 | if (IS_ERR(req)) { |
c41f8cbd SS |
1942 | retval = PTR_ERR(req); |
1943 | goto out; | |
1944 | } | |
1da177e4 | 1945 | |
09a46c6e | 1946 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1947 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1948 | |
c41f8cbd | 1949 | req->qtcb->header.port_handle = erp_action->port->handle; |
b62a8d9b CS |
1950 | req->qtcb->header.lun_handle = zfcp_sdev->lun_handle; |
1951 | req->handler = zfcp_fsf_close_lun_handler; | |
1952 | req->data = erp_action->sdev; | |
c41f8cbd | 1953 | req->erp_action = erp_action; |
e60a6d69 | 1954 | erp_action->fsf_req_id = req->req_id; |
fdf23452 | 1955 | |
287ac01a | 1956 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
1957 | retval = zfcp_fsf_req_send(req); |
1958 | if (retval) { | |
1959 | zfcp_fsf_req_free(req); | |
e60a6d69 | 1960 | erp_action->fsf_req_id = 0; |
c41f8cbd SS |
1961 | } |
1962 | out: | |
44a24cb3 | 1963 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd | 1964 | return retval; |
1da177e4 LT |
1965 | } |
1966 | ||
c9615858 CS |
1967 | static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat) |
1968 | { | |
1969 | lat_rec->sum += lat; | |
c41f8cbd SS |
1970 | lat_rec->min = min(lat_rec->min, lat); |
1971 | lat_rec->max = max(lat_rec->max, lat); | |
c9615858 CS |
1972 | } |
1973 | ||
d9742b42 | 1974 | static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi) |
c9615858 | 1975 | { |
d9742b42 CS |
1976 | struct fsf_qual_latency_info *lat_in; |
1977 | struct latency_cont *lat = NULL; | |
d436de8c | 1978 | struct zfcp_scsi_dev *zfcp_sdev; |
d9742b42 CS |
1979 | struct zfcp_blk_drv_data blktrc; |
1980 | int ticks = req->adapter->timer_ticks; | |
c9615858 | 1981 | |
d9742b42 | 1982 | lat_in = &req->qtcb->prefix.prot_status_qual.latency_info; |
c9615858 | 1983 | |
d9742b42 CS |
1984 | blktrc.flags = 0; |
1985 | blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC; | |
1986 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
1987 | blktrc.flags |= ZFCP_BLK_REQ_ERROR; | |
706eca49 | 1988 | blktrc.inb_usage = 0; |
34c2b712 | 1989 | blktrc.outb_usage = req->qdio_req.qdio_outb_usage; |
d9742b42 | 1990 | |
5bbf297c CS |
1991 | if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA && |
1992 | !(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
d436de8c | 1993 | zfcp_sdev = sdev_to_zfcp(scsi->device); |
d9742b42 CS |
1994 | blktrc.flags |= ZFCP_BLK_LAT_VALID; |
1995 | blktrc.channel_lat = lat_in->channel_lat * ticks; | |
1996 | blktrc.fabric_lat = lat_in->fabric_lat * ticks; | |
1997 | ||
1998 | switch (req->qtcb->bottom.io.data_direction) { | |
ef3eb71d FB |
1999 | case FSF_DATADIR_DIF_READ_STRIP: |
2000 | case FSF_DATADIR_DIF_READ_CONVERT: | |
d9742b42 | 2001 | case FSF_DATADIR_READ: |
b62a8d9b | 2002 | lat = &zfcp_sdev->latencies.read; |
d9742b42 | 2003 | break; |
ef3eb71d FB |
2004 | case FSF_DATADIR_DIF_WRITE_INSERT: |
2005 | case FSF_DATADIR_DIF_WRITE_CONVERT: | |
d9742b42 | 2006 | case FSF_DATADIR_WRITE: |
b62a8d9b | 2007 | lat = &zfcp_sdev->latencies.write; |
d9742b42 CS |
2008 | break; |
2009 | case FSF_DATADIR_CMND: | |
b62a8d9b | 2010 | lat = &zfcp_sdev->latencies.cmd; |
d9742b42 CS |
2011 | break; |
2012 | } | |
1da177e4 | 2013 | |
d9742b42 | 2014 | if (lat) { |
b62a8d9b | 2015 | spin_lock(&zfcp_sdev->latencies.lock); |
d9742b42 CS |
2016 | zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat); |
2017 | zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat); | |
2018 | lat->counter++; | |
b62a8d9b | 2019 | spin_unlock(&zfcp_sdev->latencies.lock); |
d9742b42 | 2020 | } |
0997f1c5 | 2021 | } |
0997f1c5 | 2022 | |
d9742b42 CS |
2023 | blk_add_driver_data(scsi->request->q, scsi->request, &blktrc, |
2024 | sizeof(blktrc)); | |
0997f1c5 | 2025 | } |
0997f1c5 | 2026 | |
c61b536c | 2027 | static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req *req) |
c41f8cbd | 2028 | { |
b62a8d9b CS |
2029 | struct scsi_cmnd *scmnd = req->data; |
2030 | struct scsi_device *sdev = scmnd->device; | |
d436de8c | 2031 | struct zfcp_scsi_dev *zfcp_sdev; |
c41f8cbd SS |
2032 | struct fsf_qtcb_header *header = &req->qtcb->header; |
2033 | ||
c41f8cbd | 2034 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
c61b536c | 2035 | return; |
1da177e4 | 2036 | |
d436de8c MP |
2037 | zfcp_sdev = sdev_to_zfcp(sdev); |
2038 | ||
c41f8cbd SS |
2039 | switch (header->fsf_status) { |
2040 | case FSF_HANDLE_MISMATCH: | |
2041 | case FSF_PORT_HANDLE_NOT_VALID: | |
ea4a3a6a | 2042 | zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fssfch1"); |
c41f8cbd SS |
2043 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2044 | break; | |
2045 | case FSF_FCPLUN_NOT_VALID: | |
2046 | case FSF_LUN_HANDLE_NOT_VALID: | |
ea4a3a6a | 2047 | zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fssfch2"); |
c41f8cbd | 2048 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2049 | break; |
c41f8cbd SS |
2050 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
2051 | zfcp_fsf_class_not_supp(req); | |
1da177e4 | 2052 | break; |
c41f8cbd SS |
2053 | case FSF_DIRECTION_INDICATOR_NOT_VALID: |
2054 | dev_err(&req->adapter->ccw_device->dev, | |
b62a8d9b | 2055 | "Incorrect direction %d, LUN 0x%016Lx on port " |
ff3b24fa | 2056 | "0x%016Lx closed\n", |
c41f8cbd | 2057 | req->qtcb->bottom.io.data_direction, |
b62a8d9b CS |
2058 | (unsigned long long)zfcp_scsi_dev_lun(sdev), |
2059 | (unsigned long long)zfcp_sdev->port->wwpn); | |
2060 | zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0, | |
ea4a3a6a | 2061 | "fssfch3"); |
c41f8cbd SS |
2062 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2063 | break; | |
2064 | case FSF_CMND_LENGTH_NOT_VALID: | |
2065 | dev_err(&req->adapter->ccw_device->dev, | |
b62a8d9b | 2066 | "Incorrect CDB length %d, LUN 0x%016Lx on " |
ff3b24fa | 2067 | "port 0x%016Lx closed\n", |
c41f8cbd | 2068 | req->qtcb->bottom.io.fcp_cmnd_length, |
b62a8d9b CS |
2069 | (unsigned long long)zfcp_scsi_dev_lun(sdev), |
2070 | (unsigned long long)zfcp_sdev->port->wwpn); | |
2071 | zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0, | |
ea4a3a6a | 2072 | "fssfch4"); |
c41f8cbd SS |
2073 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2074 | break; | |
2075 | case FSF_PORT_BOXED: | |
edaed859 SS |
2076 | zfcp_erp_set_port_status(zfcp_sdev->port, |
2077 | ZFCP_STATUS_COMMON_ACCESS_BOXED); | |
2078 | zfcp_erp_port_reopen(zfcp_sdev->port, | |
ea4a3a6a | 2079 | ZFCP_STATUS_COMMON_ERP_FAILED, "fssfch5"); |
4c571c65 | 2080 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
2081 | break; |
2082 | case FSF_LUN_BOXED: | |
edaed859 SS |
2083 | zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED); |
2084 | zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, | |
ea4a3a6a | 2085 | "fssfch6"); |
4c571c65 | 2086 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
2087 | break; |
2088 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
2089 | if (header->fsf_status_qual.word[0] == | |
2090 | FSF_SQ_INVOKE_LINK_TEST_PROCEDURE) | |
b62a8d9b | 2091 | zfcp_fc_test_link(zfcp_sdev->port); |
c41f8cbd | 2092 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2093 | break; |
1da177e4 | 2094 | } |
c61b536c CS |
2095 | } |
2096 | ||
2097 | static void zfcp_fsf_fcp_cmnd_handler(struct zfcp_fsf_req *req) | |
2098 | { | |
2099 | struct scsi_cmnd *scpnt; | |
2100 | struct fcp_resp_with_ext *fcp_rsp; | |
2101 | unsigned long flags; | |
2102 | ||
c61b536c CS |
2103 | read_lock_irqsave(&req->adapter->abort_lock, flags); |
2104 | ||
2105 | scpnt = req->data; | |
2106 | if (unlikely(!scpnt)) { | |
2107 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); | |
2108 | return; | |
c41f8cbd | 2109 | } |
c61b536c | 2110 | |
5bfb2c31 SS |
2111 | zfcp_fsf_fcp_handler_common(req); |
2112 | ||
c61b536c CS |
2113 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { |
2114 | set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED); | |
2115 | goto skip_fsfstatus; | |
2116 | } | |
2117 | ||
2118 | switch (req->qtcb->header.fsf_status) { | |
2119 | case FSF_INCONSISTENT_PROT_DATA: | |
2120 | case FSF_INVALID_PROT_PARM: | |
2121 | set_host_byte(scpnt, DID_ERROR); | |
2122 | goto skip_fsfstatus; | |
2123 | case FSF_BLOCK_GUARD_CHECK_FAILURE: | |
2124 | zfcp_scsi_dif_sense_error(scpnt, 0x1); | |
2125 | goto skip_fsfstatus; | |
2126 | case FSF_APP_TAG_CHECK_FAILURE: | |
2127 | zfcp_scsi_dif_sense_error(scpnt, 0x2); | |
2128 | goto skip_fsfstatus; | |
2129 | case FSF_REF_TAG_CHECK_FAILURE: | |
2130 | zfcp_scsi_dif_sense_error(scpnt, 0x3); | |
2131 | goto skip_fsfstatus; | |
2132 | } | |
2133 | fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp; | |
2134 | zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt); | |
2135 | ||
2136 | skip_fsfstatus: | |
2137 | zfcp_fsf_req_trace(req, scpnt); | |
250a1352 | 2138 | zfcp_dbf_scsi_result(scpnt, req); |
c61b536c CS |
2139 | |
2140 | scpnt->host_scribble = NULL; | |
2141 | (scpnt->scsi_done) (scpnt); | |
2142 | /* | |
2143 | * We must hold this lock until scsi_done has been called. | |
2144 | * Otherwise we may call scsi_done after abort regarding this | |
2145 | * command has completed. | |
2146 | * Note: scsi_done must not block! | |
2147 | */ | |
2148 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); | |
1da177e4 LT |
2149 | } |
2150 | ||
ef3eb71d FB |
2151 | static int zfcp_fsf_set_data_dir(struct scsi_cmnd *scsi_cmnd, u32 *data_dir) |
2152 | { | |
2153 | switch (scsi_get_prot_op(scsi_cmnd)) { | |
2154 | case SCSI_PROT_NORMAL: | |
2155 | switch (scsi_cmnd->sc_data_direction) { | |
2156 | case DMA_NONE: | |
2157 | *data_dir = FSF_DATADIR_CMND; | |
2158 | break; | |
2159 | case DMA_FROM_DEVICE: | |
2160 | *data_dir = FSF_DATADIR_READ; | |
2161 | break; | |
2162 | case DMA_TO_DEVICE: | |
2163 | *data_dir = FSF_DATADIR_WRITE; | |
2164 | break; | |
2165 | case DMA_BIDIRECTIONAL: | |
2166 | return -EINVAL; | |
2167 | } | |
2168 | break; | |
2169 | ||
2170 | case SCSI_PROT_READ_STRIP: | |
2171 | *data_dir = FSF_DATADIR_DIF_READ_STRIP; | |
2172 | break; | |
2173 | case SCSI_PROT_WRITE_INSERT: | |
2174 | *data_dir = FSF_DATADIR_DIF_WRITE_INSERT; | |
2175 | break; | |
2176 | case SCSI_PROT_READ_PASS: | |
2177 | *data_dir = FSF_DATADIR_DIF_READ_CONVERT; | |
2178 | break; | |
2179 | case SCSI_PROT_WRITE_PASS: | |
2180 | *data_dir = FSF_DATADIR_DIF_WRITE_CONVERT; | |
2181 | break; | |
2182 | default: | |
2183 | return -EINVAL; | |
2184 | } | |
2185 | ||
2186 | return 0; | |
2187 | } | |
2188 | ||
c41f8cbd | 2189 | /** |
b62a8d9b | 2190 | * zfcp_fsf_fcp_cmnd - initiate an FCP command (for a SCSI command) |
c41f8cbd | 2191 | * @scsi_cmnd: scsi command to be sent |
1da177e4 | 2192 | */ |
b62a8d9b | 2193 | int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd) |
1da177e4 | 2194 | { |
c41f8cbd | 2195 | struct zfcp_fsf_req *req; |
4318e08c | 2196 | struct fcp_cmnd *fcp_cmnd; |
3ec90878 | 2197 | u8 sbtype = SBAL_SFLAGS0_TYPE_READ; |
86a9668a | 2198 | int retval = -EIO; |
b62a8d9b CS |
2199 | struct scsi_device *sdev = scsi_cmnd->device; |
2200 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); | |
2201 | struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; | |
564e1c86 | 2202 | struct zfcp_qdio *qdio = adapter->qdio; |
ef3eb71d | 2203 | struct fsf_qtcb_bottom_io *io; |
e55f8753 | 2204 | unsigned long flags; |
1da177e4 | 2205 | |
b62a8d9b | 2206 | if (unlikely(!(atomic_read(&zfcp_sdev->status) & |
c41f8cbd SS |
2207 | ZFCP_STATUS_COMMON_UNBLOCKED))) |
2208 | return -EBUSY; | |
1da177e4 | 2209 | |
e55f8753 | 2210 | spin_lock_irqsave(&qdio->req_q_lock, flags); |
706eca49 | 2211 | if (atomic_read(&qdio->req_q_free) <= 0) { |
564e1c86 | 2212 | atomic_inc(&qdio->req_q_full); |
c41f8cbd | 2213 | goto out; |
8fdf30d5 | 2214 | } |
09a46c6e | 2215 | |
1674b405 | 2216 | if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE) |
3ec90878 | 2217 | sbtype = SBAL_SFLAGS0_TYPE_WRITE; |
1674b405 | 2218 | |
564e1c86 | 2219 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND, |
1674b405 | 2220 | sbtype, adapter->pool.scsi_req); |
09a46c6e | 2221 | |
025270f0 | 2222 | if (IS_ERR(req)) { |
c41f8cbd SS |
2223 | retval = PTR_ERR(req); |
2224 | goto out; | |
2225 | } | |
2226 | ||
ef3eb71d FB |
2227 | scsi_cmnd->host_scribble = (unsigned char *) req->req_id; |
2228 | ||
2229 | io = &req->qtcb->bottom.io; | |
09a46c6e | 2230 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
c41f8cbd | 2231 | req->data = scsi_cmnd; |
c61b536c | 2232 | req->handler = zfcp_fsf_fcp_cmnd_handler; |
b62a8d9b CS |
2233 | req->qtcb->header.lun_handle = zfcp_sdev->lun_handle; |
2234 | req->qtcb->header.port_handle = zfcp_sdev->port->handle; | |
ef3eb71d FB |
2235 | io->service_class = FSF_CLASS_3; |
2236 | io->fcp_cmnd_length = FCP_CMND_LEN; | |
c41f8cbd | 2237 | |
ef3eb71d FB |
2238 | if (scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) { |
2239 | io->data_block_length = scsi_cmnd->device->sector_size; | |
2240 | io->ref_tag_value = scsi_get_lba(scsi_cmnd) & 0xFFFFFFFF; | |
1da177e4 LT |
2241 | } |
2242 | ||
cc405ace SM |
2243 | if (zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction)) |
2244 | goto failed_scsi_cmnd; | |
ef3eb71d | 2245 | |
4318e08c | 2246 | fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd; |
2443c8b2 | 2247 | zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd, 0); |
1da177e4 | 2248 | |
ef3eb71d FB |
2249 | if (scsi_prot_sg_count(scsi_cmnd)) { |
2250 | zfcp_qdio_set_data_div(qdio, &req->qdio_req, | |
2251 | scsi_prot_sg_count(scsi_cmnd)); | |
86a9668a SS |
2252 | retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, |
2253 | scsi_prot_sglist(scsi_cmnd)); | |
2254 | if (retval) | |
2255 | goto failed_scsi_cmnd; | |
2256 | io->prot_data_length = zfcp_qdio_real_bytes( | |
ef3eb71d | 2257 | scsi_prot_sglist(scsi_cmnd)); |
ef3eb71d FB |
2258 | } |
2259 | ||
86a9668a SS |
2260 | retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, |
2261 | scsi_sglist(scsi_cmnd)); | |
2262 | if (unlikely(retval)) | |
c41f8cbd | 2263 | goto failed_scsi_cmnd; |
1da177e4 | 2264 | |
ef3eb71d | 2265 | zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req); |
86a9668a SS |
2266 | if (zfcp_adapter_multi_buffer_active(adapter)) |
2267 | zfcp_qdio_set_scount(qdio, &req->qdio_req); | |
ef3eb71d | 2268 | |
c41f8cbd SS |
2269 | retval = zfcp_fsf_req_send(req); |
2270 | if (unlikely(retval)) | |
2271 | goto failed_scsi_cmnd; | |
1da177e4 | 2272 | |
c41f8cbd | 2273 | goto out; |
1da177e4 | 2274 | |
c41f8cbd | 2275 | failed_scsi_cmnd: |
c41f8cbd SS |
2276 | zfcp_fsf_req_free(req); |
2277 | scsi_cmnd->host_scribble = NULL; | |
2278 | out: | |
e55f8753 | 2279 | spin_unlock_irqrestore(&qdio->req_q_lock, flags); |
c41f8cbd | 2280 | return retval; |
1da177e4 LT |
2281 | } |
2282 | ||
c61b536c CS |
2283 | static void zfcp_fsf_fcp_task_mgmt_handler(struct zfcp_fsf_req *req) |
2284 | { | |
2285 | struct fcp_resp_with_ext *fcp_rsp; | |
2286 | struct fcp_resp_rsp_info *rsp_info; | |
2287 | ||
2288 | zfcp_fsf_fcp_handler_common(req); | |
2289 | ||
2290 | fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp; | |
2291 | rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1]; | |
2292 | ||
2293 | if ((rsp_info->rsp_code != FCP_TMF_CMPL) || | |
2294 | (req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
2295 | req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
2296 | } | |
2297 | ||
1da177e4 | 2298 | /** |
b62a8d9b CS |
2299 | * zfcp_fsf_fcp_task_mgmt - send SCSI task management command |
2300 | * @scmnd: SCSI command to send the task management command for | |
c41f8cbd | 2301 | * @tm_flags: unsigned byte for task management flags |
c41f8cbd | 2302 | * Returns: on success pointer to struct fsf_req, NULL otherwise |
1da177e4 | 2303 | */ |
b62a8d9b CS |
2304 | struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_cmnd *scmnd, |
2305 | u8 tm_flags) | |
1da177e4 | 2306 | { |
c41f8cbd | 2307 | struct zfcp_fsf_req *req = NULL; |
4318e08c | 2308 | struct fcp_cmnd *fcp_cmnd; |
b62a8d9b CS |
2309 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scmnd->device); |
2310 | struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio; | |
1da177e4 | 2311 | |
b62a8d9b | 2312 | if (unlikely(!(atomic_read(&zfcp_sdev->status) & |
c41f8cbd SS |
2313 | ZFCP_STATUS_COMMON_UNBLOCKED))) |
2314 | return NULL; | |
1da177e4 | 2315 | |
44a24cb3 | 2316 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 2317 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 2318 | goto out; |
09a46c6e | 2319 | |
564e1c86 | 2320 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND, |
3ec90878 | 2321 | SBAL_SFLAGS0_TYPE_WRITE, |
564e1c86 | 2322 | qdio->adapter->pool.scsi_req); |
09a46c6e | 2323 | |
633528c3 SS |
2324 | if (IS_ERR(req)) { |
2325 | req = NULL; | |
c41f8cbd | 2326 | goto out; |
633528c3 | 2327 | } |
1da177e4 | 2328 | |
b62a8d9b | 2329 | req->data = scmnd; |
c61b536c | 2330 | req->handler = zfcp_fsf_fcp_task_mgmt_handler; |
b62a8d9b CS |
2331 | req->qtcb->header.lun_handle = zfcp_sdev->lun_handle; |
2332 | req->qtcb->header.port_handle = zfcp_sdev->port->handle; | |
c41f8cbd SS |
2333 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; |
2334 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
4318e08c | 2335 | req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN; |
c41f8cbd | 2336 | |
1674b405 | 2337 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 2338 | |
4318e08c | 2339 | fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd; |
2443c8b2 | 2340 | zfcp_fc_scsi_to_fcp(fcp_cmnd, scmnd, tm_flags); |
1da177e4 | 2341 | |
c41f8cbd SS |
2342 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); |
2343 | if (!zfcp_fsf_req_send(req)) | |
2344 | goto out; | |
1da177e4 | 2345 | |
c41f8cbd SS |
2346 | zfcp_fsf_req_free(req); |
2347 | req = NULL; | |
2348 | out: | |
44a24cb3 | 2349 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd SS |
2350 | return req; |
2351 | } | |
1da177e4 | 2352 | |
bd63eaf4 SS |
2353 | /** |
2354 | * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO | |
2355 | * @adapter: pointer to struct zfcp_adapter | |
2356 | * @sbal_idx: response queue index of SBAL to be processed | |
2357 | */ | |
564e1c86 | 2358 | void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx) |
bd63eaf4 | 2359 | { |
564e1c86 | 2360 | struct zfcp_adapter *adapter = qdio->adapter; |
706eca49 | 2361 | struct qdio_buffer *sbal = qdio->res_q[sbal_idx]; |
bd63eaf4 SS |
2362 | struct qdio_buffer_element *sbale; |
2363 | struct zfcp_fsf_req *fsf_req; | |
b6bd2fb9 | 2364 | unsigned long req_id; |
bd63eaf4 SS |
2365 | int idx; |
2366 | ||
2367 | for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) { | |
2368 | ||
2369 | sbale = &sbal->element[idx]; | |
2370 | req_id = (unsigned long) sbale->addr; | |
b6bd2fb9 | 2371 | fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id); |
bd63eaf4 | 2372 | |
339f4f4e | 2373 | if (!fsf_req) { |
bd63eaf4 SS |
2374 | /* |
2375 | * Unknown request means that we have potentially memory | |
2376 | * corruption and must stop the machine immediately. | |
2377 | */ | |
339f4f4e | 2378 | zfcp_qdio_siosl(adapter); |
bd63eaf4 SS |
2379 | panic("error: unknown req_id (%lx) on adapter %s.\n", |
2380 | req_id, dev_name(&adapter->ccw_device->dev)); | |
339f4f4e | 2381 | } |
bd63eaf4 | 2382 | |
34c2b712 | 2383 | fsf_req->qdio_req.sbal_response = sbal_idx; |
bd63eaf4 SS |
2384 | zfcp_fsf_req_complete(fsf_req); |
2385 | ||
3ec90878 | 2386 | if (likely(sbale->eflags & SBAL_EFLAGS_LAST_ENTRY)) |
bd63eaf4 SS |
2387 | break; |
2388 | } | |
2389 | } |