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Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
553448f6 | 2 | * zfcp device driver |
1da177e4 | 3 | * |
553448f6 | 4 | * Implementation of FSF commands. |
1da177e4 | 5 | * |
bd77befa | 6 | * Copyright IBM Corp. 2002, 2015 |
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 | ||
805de8f4 | 117 | atomic_or(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); |
3b974874 | 207 | } |
c41f8cbd | 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: | |
805de8f4 | 348 | atomic_or(ZFCP_STATUS_ADAPTER_HOST_CON_INIT, |
c41f8cbd SS |
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: | |
bd77befa SM |
511 | if (bottom->connection_features & FSF_FEATURE_NPIV_MODE) |
512 | fc_host_port_type(shost) = FC_PORTTYPE_NPIV; | |
513 | else | |
514 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
c41f8cbd SS |
515 | break; |
516 | case FSF_TOPO_AL: | |
517 | fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; | |
dceab655 | 518 | /* fall through */ |
c41f8cbd | 519 | default: |
c41f8cbd | 520 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
521 | "Unknown or unsupported arbitrated loop " |
522 | "fibre channel topology detected\n"); | |
ea4a3a6a | 523 | zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1"); |
c41f8cbd | 524 | return -EIO; |
1da177e4 | 525 | } |
c41f8cbd | 526 | |
1da177e4 LT |
527 | return 0; |
528 | } | |
529 | ||
c41f8cbd | 530 | static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) |
553448f6 CS |
531 | { |
532 | struct zfcp_adapter *adapter = req->adapter; | |
c41f8cbd SS |
533 | struct fsf_qtcb *qtcb = req->qtcb; |
534 | struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config; | |
535 | struct Scsi_Host *shost = adapter->scsi_host; | |
553448f6 | 536 | |
c41f8cbd SS |
537 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
538 | return; | |
1da177e4 | 539 | |
c41f8cbd SS |
540 | adapter->fsf_lic_version = bottom->lic_version; |
541 | adapter->adapter_features = bottom->adapter_features; | |
542 | adapter->connection_features = bottom->connection_features; | |
543 | adapter->peer_wwpn = 0; | |
544 | adapter->peer_wwnn = 0; | |
545 | adapter->peer_d_id = 0; | |
8a36e453 | 546 | |
c41f8cbd SS |
547 | switch (qtcb->header.fsf_status) { |
548 | case FSF_GOOD: | |
549 | if (zfcp_fsf_exchange_config_evaluate(req)) | |
550 | return; | |
1da177e4 | 551 | |
c41f8cbd SS |
552 | if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { |
553 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
554 | "FCP adapter maximum QTCB size (%d bytes) " |
555 | "is too small\n", | |
556 | bottom->max_qtcb_size); | |
ea4a3a6a | 557 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1"); |
c41f8cbd SS |
558 | return; |
559 | } | |
805de8f4 | 560 | atomic_or(ZFCP_STATUS_ADAPTER_XCONFIG_OK, |
c41f8cbd | 561 | &adapter->status); |
1da177e4 | 562 | break; |
c41f8cbd SS |
563 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
564 | fc_host_node_name(shost) = 0; | |
565 | fc_host_port_name(shost) = 0; | |
566 | fc_host_port_id(shost) = 0; | |
567 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; | |
568 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; | |
569 | adapter->hydra_version = 0; | |
1da177e4 | 570 | |
f76ccaac DH |
571 | /* avoids adapter shutdown to be able to recognize |
572 | * events such as LINK UP */ | |
805de8f4 | 573 | atomic_or(ZFCP_STATUS_ADAPTER_XCONFIG_OK, |
f76ccaac | 574 | &adapter->status); |
edaed859 | 575 | zfcp_fsf_link_down_info_eval(req, |
c41f8cbd | 576 | &qtcb->header.fsf_status_qual.link_down_info); |
9edf7d75 SM |
577 | if (zfcp_fsf_exchange_config_evaluate(req)) |
578 | return; | |
1da177e4 | 579 | break; |
c41f8cbd | 580 | default: |
ea4a3a6a | 581 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3"); |
c41f8cbd SS |
582 | return; |
583 | } | |
1da177e4 | 584 | |
c41f8cbd SS |
585 | if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) { |
586 | adapter->hardware_version = bottom->hardware_version; | |
587 | memcpy(fc_host_serial_number(shost), bottom->serial_number, | |
588 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
589 | EBCASC(fc_host_serial_number(shost), | |
590 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
591 | } | |
1da177e4 | 592 | |
c41f8cbd SS |
593 | if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) { |
594 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
595 | "The FCP adapter only supports newer " |
596 | "control block versions\n"); | |
ea4a3a6a | 597 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4"); |
c41f8cbd SS |
598 | return; |
599 | } | |
600 | if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) { | |
601 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
602 | "The FCP adapter only supports older " |
603 | "control block versions\n"); | |
ea4a3a6a | 604 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5"); |
c41f8cbd SS |
605 | } |
606 | } | |
1da177e4 | 607 | |
c41f8cbd SS |
608 | static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req) |
609 | { | |
610 | struct zfcp_adapter *adapter = req->adapter; | |
611 | struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port; | |
612 | struct Scsi_Host *shost = adapter->scsi_host; | |
1da177e4 | 613 | |
c41f8cbd SS |
614 | if (req->data) |
615 | memcpy(req->data, bottom, sizeof(*bottom)); | |
9eb69aff | 616 | |
0282985d | 617 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) { |
c41f8cbd | 618 | fc_host_permanent_port_name(shost) = bottom->wwpn; |
0282985d | 619 | } else |
c41f8cbd SS |
620 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); |
621 | fc_host_maxframe_size(shost) = bottom->maximum_frame_size; | |
d2201977 SM |
622 | fc_host_supported_speeds(shost) = |
623 | zfcp_fsf_convert_portspeed(bottom->supported_speed); | |
2d8e62bb CS |
624 | memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types, |
625 | FC_FC4_LIST_SIZE); | |
626 | memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types, | |
627 | FC_FC4_LIST_SIZE); | |
c41f8cbd | 628 | } |
1da177e4 | 629 | |
c41f8cbd SS |
630 | static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) |
631 | { | |
c41f8cbd SS |
632 | struct fsf_qtcb *qtcb = req->qtcb; |
633 | ||
634 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
635 | return; | |
636 | ||
637 | switch (qtcb->header.fsf_status) { | |
638 | case FSF_GOOD: | |
639 | zfcp_fsf_exchange_port_evaluate(req); | |
c41f8cbd SS |
640 | break; |
641 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: | |
642 | zfcp_fsf_exchange_port_evaluate(req); | |
edaed859 | 643 | zfcp_fsf_link_down_info_eval(req, |
c41f8cbd | 644 | &qtcb->header.fsf_status_qual.link_down_info); |
aef4a983 | 645 | break; |
1da177e4 | 646 | } |
c41f8cbd | 647 | } |
d26ab06e | 648 | |
a4623c46 | 649 | static struct zfcp_fsf_req *zfcp_fsf_alloc(mempool_t *pool) |
c41f8cbd SS |
650 | { |
651 | struct zfcp_fsf_req *req; | |
a4623c46 SS |
652 | |
653 | if (likely(pool)) | |
654 | req = mempool_alloc(pool, GFP_ATOMIC); | |
655 | else | |
656 | req = kmalloc(sizeof(*req), GFP_ATOMIC); | |
657 | ||
658 | if (unlikely(!req)) | |
c41f8cbd | 659 | return NULL; |
a4623c46 | 660 | |
c41f8cbd | 661 | memset(req, 0, sizeof(*req)); |
88f2a977 | 662 | req->pool = pool; |
c41f8cbd SS |
663 | return req; |
664 | } | |
665 | ||
a4623c46 | 666 | static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool) |
c41f8cbd | 667 | { |
a4623c46 | 668 | struct fsf_qtcb *qtcb; |
c41f8cbd SS |
669 | |
670 | if (likely(pool)) | |
671 | qtcb = mempool_alloc(pool, GFP_ATOMIC); | |
672 | else | |
259afe2e | 673 | qtcb = kmem_cache_alloc(zfcp_fsf_qtcb_cache, GFP_ATOMIC); |
a4623c46 | 674 | |
c41f8cbd SS |
675 | if (unlikely(!qtcb)) |
676 | return NULL; | |
677 | ||
678 | memset(qtcb, 0, sizeof(*qtcb)); | |
a4623c46 | 679 | return qtcb; |
c41f8cbd SS |
680 | } |
681 | ||
564e1c86 | 682 | static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio, |
3ec90878 | 683 | u32 fsf_cmd, u8 sbtype, |
1674b405 | 684 | mempool_t *pool) |
1da177e4 | 685 | { |
564e1c86 | 686 | struct zfcp_adapter *adapter = qdio->adapter; |
a4623c46 | 687 | struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool); |
1da177e4 | 688 | |
c41f8cbd | 689 | if (unlikely(!req)) |
1e9b1643 | 690 | return ERR_PTR(-ENOMEM); |
1da177e4 | 691 | |
c41f8cbd SS |
692 | if (adapter->req_no == 0) |
693 | adapter->req_no++; | |
1da177e4 | 694 | |
c41f8cbd SS |
695 | INIT_LIST_HEAD(&req->list); |
696 | init_timer(&req->timer); | |
058b8647 | 697 | init_completion(&req->completion); |
1da177e4 | 698 | |
c41f8cbd SS |
699 | req->adapter = adapter; |
700 | req->fsf_command = fsf_cmd; | |
52bfb558 | 701 | req->req_id = adapter->req_no; |
c41f8cbd | 702 | |
a4623c46 SS |
703 | if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) { |
704 | if (likely(pool)) | |
705 | req->qtcb = zfcp_qtcb_alloc(adapter->pool.qtcb_pool); | |
706 | else | |
707 | req->qtcb = zfcp_qtcb_alloc(NULL); | |
708 | ||
709 | if (unlikely(!req->qtcb)) { | |
710 | zfcp_fsf_req_free(req); | |
711 | return ERR_PTR(-ENOMEM); | |
712 | } | |
713 | ||
5bdecd22 | 714 | req->seq_no = adapter->fsf_req_seq_no; |
564e1c86 | 715 | req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; |
c41f8cbd SS |
716 | req->qtcb->prefix.req_id = req->req_id; |
717 | req->qtcb->prefix.ulp_info = 26; | |
718 | req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command]; | |
719 | req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION; | |
720 | req->qtcb->header.req_handle = req->req_id; | |
721 | req->qtcb->header.fsf_command = req->fsf_command; | |
c41f8cbd SS |
722 | } |
723 | ||
1674b405 CS |
724 | zfcp_qdio_req_init(adapter->qdio, &req->qdio_req, req->req_id, sbtype, |
725 | req->qtcb, sizeof(struct fsf_qtcb)); | |
726 | ||
c41f8cbd | 727 | return req; |
1da177e4 LT |
728 | } |
729 | ||
c41f8cbd SS |
730 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) |
731 | { | |
732 | struct zfcp_adapter *adapter = req->adapter; | |
564e1c86 | 733 | struct zfcp_qdio *qdio = adapter->qdio; |
b6bd2fb9 | 734 | int with_qtcb = (req->qtcb != NULL); |
e60a6d69 | 735 | int req_id = req->req_id; |
c41f8cbd | 736 | |
b6bd2fb9 | 737 | zfcp_reqlist_add(adapter->req_list, req); |
c41f8cbd | 738 | |
706eca49 | 739 | req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q_free); |
1aae0560 | 740 | req->issued = get_tod_clock(); |
34c2b712 | 741 | if (zfcp_qdio_send(qdio, &req->qdio_req)) { |
c41f8cbd | 742 | del_timer(&req->timer); |
3765138a | 743 | /* lookup request again, list might have changed */ |
b6bd2fb9 | 744 | zfcp_reqlist_find_rm(adapter->req_list, req_id); |
ea4a3a6a | 745 | zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1"); |
c41f8cbd SS |
746 | return -EIO; |
747 | } | |
748 | ||
749 | /* Don't increase for unsolicited status */ | |
135ea137 | 750 | if (with_qtcb) |
c41f8cbd | 751 | adapter->fsf_req_seq_no++; |
52bfb558 | 752 | adapter->req_no++; |
c41f8cbd SS |
753 | |
754 | return 0; | |
755 | } | |
756 | ||
757 | /** | |
758 | * zfcp_fsf_status_read - send status read request | |
759 | * @adapter: pointer to struct zfcp_adapter | |
760 | * @req_flags: request flags | |
761 | * Returns: 0 on success, ERROR otherwise | |
1da177e4 | 762 | */ |
564e1c86 | 763 | int zfcp_fsf_status_read(struct zfcp_qdio *qdio) |
1da177e4 | 764 | { |
564e1c86 | 765 | struct zfcp_adapter *adapter = qdio->adapter; |
c41f8cbd SS |
766 | struct zfcp_fsf_req *req; |
767 | struct fsf_status_read_buffer *sr_buf; | |
c7b279ae | 768 | struct page *page; |
c41f8cbd | 769 | int retval = -EIO; |
1da177e4 | 770 | |
44a24cb3 | 771 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 772 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd SS |
773 | goto out; |
774 | ||
75a1408d MP |
775 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS, |
776 | SBAL_SFLAGS0_TYPE_STATUS, | |
a4623c46 | 777 | adapter->pool.status_read_req); |
025270f0 | 778 | if (IS_ERR(req)) { |
c41f8cbd SS |
779 | retval = PTR_ERR(req); |
780 | goto out; | |
1da177e4 LT |
781 | } |
782 | ||
c7b279ae CS |
783 | page = mempool_alloc(adapter->pool.sr_data, GFP_ATOMIC); |
784 | if (!page) { | |
c41f8cbd SS |
785 | retval = -ENOMEM; |
786 | goto failed_buf; | |
787 | } | |
c7b279ae | 788 | sr_buf = page_address(page); |
c41f8cbd SS |
789 | memset(sr_buf, 0, sizeof(*sr_buf)); |
790 | req->data = sr_buf; | |
1674b405 CS |
791 | |
792 | zfcp_qdio_fill_next(qdio, &req->qdio_req, sr_buf, sizeof(*sr_buf)); | |
793 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); | |
059c97d0 | 794 | |
c41f8cbd SS |
795 | retval = zfcp_fsf_req_send(req); |
796 | if (retval) | |
797 | goto failed_req_send; | |
1da177e4 | 798 | |
c41f8cbd SS |
799 | goto out; |
800 | ||
801 | failed_req_send: | |
a54ca0f6 | 802 | req->data = NULL; |
c7b279ae | 803 | mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data); |
c41f8cbd | 804 | failed_buf: |
a54ca0f6 | 805 | zfcp_dbf_hba_fsf_uss("fssr__1", req); |
c41f8cbd | 806 | zfcp_fsf_req_free(req); |
c41f8cbd | 807 | out: |
44a24cb3 | 808 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd SS |
809 | return retval; |
810 | } | |
811 | ||
812 | static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req) | |
813 | { | |
b62a8d9b | 814 | struct scsi_device *sdev = req->data; |
d436de8c | 815 | struct zfcp_scsi_dev *zfcp_sdev; |
c41f8cbd SS |
816 | union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual; |
817 | ||
818 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
819 | return; | |
820 | ||
d436de8c MP |
821 | zfcp_sdev = sdev_to_zfcp(sdev); |
822 | ||
c41f8cbd | 823 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 824 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd | 825 | if (fsq->word[0] == fsq->word[1]) { |
b62a8d9b | 826 | zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, |
ea4a3a6a | 827 | "fsafch1"); |
c41f8cbd | 828 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
829 | } |
830 | break; | |
1da177e4 | 831 | case FSF_LUN_HANDLE_NOT_VALID: |
c41f8cbd | 832 | if (fsq->word[0] == fsq->word[1]) { |
ea4a3a6a | 833 | zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fsafch2"); |
c41f8cbd | 834 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
835 | } |
836 | break; | |
1da177e4 | 837 | case FSF_FCP_COMMAND_DOES_NOT_EXIST: |
c41f8cbd | 838 | req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED; |
1da177e4 | 839 | break; |
1da177e4 | 840 | case FSF_PORT_BOXED: |
edaed859 SS |
841 | zfcp_erp_set_port_status(zfcp_sdev->port, |
842 | ZFCP_STATUS_COMMON_ACCESS_BOXED); | |
843 | zfcp_erp_port_reopen(zfcp_sdev->port, | |
ea4a3a6a | 844 | ZFCP_STATUS_COMMON_ERP_FAILED, "fsafch3"); |
4c571c65 | 845 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 846 | break; |
1da177e4 | 847 | case FSF_LUN_BOXED: |
edaed859 SS |
848 | zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED); |
849 | zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, | |
ea4a3a6a | 850 | "fsafch4"); |
4c571c65 | 851 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 852 | break; |
1da177e4 | 853 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 854 | switch (fsq->word[0]) { |
1da177e4 | 855 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
b62a8d9b | 856 | zfcp_fc_test_link(zfcp_sdev->port); |
dceab655 | 857 | /* fall through */ |
1da177e4 | 858 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 859 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 860 | break; |
1da177e4 LT |
861 | } |
862 | break; | |
1da177e4 | 863 | case FSF_GOOD: |
c41f8cbd | 864 | req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED; |
1da177e4 | 865 | break; |
1da177e4 | 866 | } |
1da177e4 LT |
867 | } |
868 | ||
869 | /** | |
b62a8d9b CS |
870 | * zfcp_fsf_abort_fcp_cmnd - abort running SCSI command |
871 | * @scmnd: The SCSI command to abort | |
c41f8cbd | 872 | * Returns: pointer to struct zfcp_fsf_req |
1da177e4 | 873 | */ |
1da177e4 | 874 | |
b62a8d9b | 875 | struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *scmnd) |
1da177e4 | 876 | { |
c41f8cbd | 877 | struct zfcp_fsf_req *req = NULL; |
b62a8d9b CS |
878 | struct scsi_device *sdev = scmnd->device; |
879 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); | |
880 | struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio; | |
881 | unsigned long old_req_id = (unsigned long) scmnd->host_scribble; | |
8a36e453 | 882 | |
44a24cb3 | 883 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 884 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 885 | goto out; |
564e1c86 | 886 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND, |
3ec90878 | 887 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 888 | qdio->adapter->pool.scsi_abort); |
633528c3 SS |
889 | if (IS_ERR(req)) { |
890 | req = NULL; | |
c41f8cbd | 891 | goto out; |
633528c3 | 892 | } |
2abbe866 | 893 | |
b62a8d9b | 894 | if (unlikely(!(atomic_read(&zfcp_sdev->status) & |
c41f8cbd SS |
895 | ZFCP_STATUS_COMMON_UNBLOCKED))) |
896 | goto out_error_free; | |
1da177e4 | 897 | |
1674b405 | 898 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 899 | |
6fbf25e8 | 900 | req->data = sdev; |
c41f8cbd | 901 | req->handler = zfcp_fsf_abort_fcp_command_handler; |
b62a8d9b CS |
902 | req->qtcb->header.lun_handle = zfcp_sdev->lun_handle; |
903 | req->qtcb->header.port_handle = zfcp_sdev->port->handle; | |
c41f8cbd SS |
904 | req->qtcb->bottom.support.req_handle = (u64) old_req_id; |
905 | ||
906 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); | |
907 | if (!zfcp_fsf_req_send(req)) | |
908 | goto out; | |
909 | ||
910 | out_error_free: | |
911 | zfcp_fsf_req_free(req); | |
912 | req = NULL; | |
913 | out: | |
44a24cb3 | 914 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd | 915 | return req; |
1da177e4 LT |
916 | } |
917 | ||
c41f8cbd | 918 | static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) |
1da177e4 | 919 | { |
c41f8cbd | 920 | struct zfcp_adapter *adapter = req->adapter; |
7c7dc196 | 921 | struct zfcp_fsf_ct_els *ct = req->data; |
c41f8cbd | 922 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1da177e4 | 923 | |
7c7dc196 | 924 | ct->status = -EINVAL; |
1da177e4 | 925 | |
c41f8cbd | 926 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
927 | goto skip_fsfstatus; |
928 | ||
1da177e4 | 929 | switch (header->fsf_status) { |
1da177e4 | 930 | case FSF_GOOD: |
0100998d | 931 | zfcp_dbf_san_res("fsscth2", req); |
7c7dc196 | 932 | ct->status = 0; |
1da177e4 | 933 | break; |
1da177e4 | 934 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 935 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 936 | break; |
1da177e4 | 937 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
938 | switch (header->fsf_status_qual.word[0]){ |
939 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 940 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 941 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 942 | break; |
1da177e4 LT |
943 | } |
944 | break; | |
1da177e4 | 945 | case FSF_PORT_BOXED: |
4c571c65 | 946 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 947 | break; |
c41f8cbd | 948 | case FSF_PORT_HANDLE_NOT_VALID: |
ea4a3a6a | 949 | zfcp_erp_adapter_reopen(adapter, 0, "fsscth1"); |
dceab655 | 950 | /* fall through */ |
c41f8cbd | 951 | case FSF_GENERIC_COMMAND_REJECTED: |
1da177e4 | 952 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 953 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 954 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 955 | case FSF_SBAL_MISMATCH: |
c41f8cbd | 956 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
957 | break; |
958 | } | |
959 | ||
960 | skip_fsfstatus: | |
7c7dc196 CS |
961 | if (ct->handler) |
962 | ct->handler(ct->handler_data); | |
c41f8cbd | 963 | } |
1da177e4 | 964 | |
1674b405 CS |
965 | static void zfcp_fsf_setup_ct_els_unchained(struct zfcp_qdio *qdio, |
966 | struct zfcp_qdio_req *q_req, | |
426f6059 CS |
967 | struct scatterlist *sg_req, |
968 | struct scatterlist *sg_resp) | |
969 | { | |
1674b405 CS |
970 | zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_req), sg_req->length); |
971 | zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_resp), sg_resp->length); | |
972 | zfcp_qdio_set_sbale_last(qdio, q_req); | |
426f6059 CS |
973 | } |
974 | ||
39eb7e9a CS |
975 | static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req, |
976 | struct scatterlist *sg_req, | |
01b04759 | 977 | struct scatterlist *sg_resp) |
c41f8cbd | 978 | { |
42428f74 | 979 | struct zfcp_adapter *adapter = req->adapter; |
86a9668a SS |
980 | struct zfcp_qdio *qdio = adapter->qdio; |
981 | struct fsf_qtcb *qtcb = req->qtcb; | |
42428f74 | 982 | u32 feat = adapter->adapter_features; |
c41f8cbd | 983 | |
86a9668a SS |
984 | if (zfcp_adapter_multi_buffer_active(adapter)) { |
985 | if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req)) | |
986 | return -EIO; | |
70369f8e SM |
987 | qtcb->bottom.support.req_buf_length = |
988 | zfcp_qdio_real_bytes(sg_req); | |
86a9668a SS |
989 | if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp)) |
990 | return -EIO; | |
70369f8e SM |
991 | qtcb->bottom.support.resp_buf_length = |
992 | zfcp_qdio_real_bytes(sg_resp); | |
39eb7e9a | 993 | |
7d91869c | 994 | zfcp_qdio_set_data_div(qdio, &req->qdio_req, sg_nents(sg_req)); |
86a9668a SS |
995 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
996 | zfcp_qdio_set_scount(qdio, &req->qdio_req); | |
426f6059 CS |
997 | return 0; |
998 | } | |
999 | ||
1000 | /* use single, unchained SBAL if it can hold the request */ | |
30b6777b | 1001 | if (zfcp_qdio_sg_one_sbale(sg_req) && zfcp_qdio_sg_one_sbale(sg_resp)) { |
86a9668a | 1002 | zfcp_fsf_setup_ct_els_unchained(qdio, &req->qdio_req, |
1674b405 | 1003 | sg_req, sg_resp); |
39eb7e9a CS |
1004 | return 0; |
1005 | } | |
1006 | ||
86a9668a SS |
1007 | if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) |
1008 | return -EOPNOTSUPP; | |
1009 | ||
1010 | if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req)) | |
9072df4d | 1011 | return -EIO; |
c41f8cbd | 1012 | |
86a9668a SS |
1013 | qtcb->bottom.support.req_buf_length = zfcp_qdio_real_bytes(sg_req); |
1014 | ||
1015 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); | |
1016 | zfcp_qdio_skip_to_last_sbale(qdio, &req->qdio_req); | |
1017 | ||
1018 | if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp)) | |
9072df4d | 1019 | return -EIO; |
86a9668a SS |
1020 | |
1021 | qtcb->bottom.support.resp_buf_length = zfcp_qdio_real_bytes(sg_resp); | |
1022 | ||
1023 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); | |
98fc4d5c | 1024 | |
b1a58985 CS |
1025 | return 0; |
1026 | } | |
1027 | ||
1028 | static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req, | |
1029 | struct scatterlist *sg_req, | |
1030 | struct scatterlist *sg_resp, | |
01b04759 | 1031 | unsigned int timeout) |
b1a58985 CS |
1032 | { |
1033 | int ret; | |
1034 | ||
01b04759 | 1035 | ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp); |
b1a58985 CS |
1036 | if (ret) |
1037 | return ret; | |
1038 | ||
98fc4d5c | 1039 | /* common settings for ct/gs and els requests */ |
51375ee8 SS |
1040 | if (timeout > 255) |
1041 | timeout = 255; /* max value accepted by hardware */ | |
98fc4d5c | 1042 | req->qtcb->bottom.support.service_class = FSF_CLASS_3; |
51375ee8 SS |
1043 | req->qtcb->bottom.support.timeout = timeout; |
1044 | zfcp_fsf_start_timer(req, (timeout + 10) * HZ); | |
c41f8cbd SS |
1045 | |
1046 | return 0; | |
1da177e4 LT |
1047 | } |
1048 | ||
1049 | /** | |
c41f8cbd SS |
1050 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) |
1051 | * @ct: pointer to struct zfcp_send_ct with data for request | |
1052 | * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req | |
1da177e4 | 1053 | */ |
7c7dc196 | 1054 | int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port, |
51375ee8 SS |
1055 | struct zfcp_fsf_ct_els *ct, mempool_t *pool, |
1056 | unsigned int timeout) | |
1da177e4 | 1057 | { |
564e1c86 | 1058 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
c41f8cbd SS |
1059 | struct zfcp_fsf_req *req; |
1060 | int ret = -EIO; | |
1da177e4 | 1061 | |
44a24cb3 | 1062 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1063 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1064 | goto out; |
1da177e4 | 1065 | |
1674b405 | 1066 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC, |
3ec90878 | 1067 | SBAL_SFLAGS0_TYPE_WRITE_READ, pool); |
09a46c6e | 1068 | |
025270f0 | 1069 | if (IS_ERR(req)) { |
c41f8cbd SS |
1070 | ret = PTR_ERR(req); |
1071 | goto out; | |
3f0ca62a CS |
1072 | } |
1073 | ||
09a46c6e | 1074 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
01b04759 | 1075 | ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp, timeout); |
553448f6 | 1076 | if (ret) |
1da177e4 | 1077 | goto failed_send; |
1da177e4 | 1078 | |
c41f8cbd | 1079 | req->handler = zfcp_fsf_send_ct_handler; |
5ab944f9 | 1080 | req->qtcb->header.port_handle = wka_port->handle; |
771bf035 | 1081 | ct->d_id = wka_port->d_id; |
c41f8cbd SS |
1082 | req->data = ct; |
1083 | ||
2c55b750 | 1084 | zfcp_dbf_san_req("fssct_1", req, wka_port->d_id); |
1da177e4 | 1085 | |
c41f8cbd SS |
1086 | ret = zfcp_fsf_req_send(req); |
1087 | if (ret) | |
1088 | goto failed_send; | |
1da177e4 | 1089 | |
c41f8cbd | 1090 | goto out; |
1da177e4 | 1091 | |
c41f8cbd SS |
1092 | failed_send: |
1093 | zfcp_fsf_req_free(req); | |
c41f8cbd | 1094 | out: |
44a24cb3 | 1095 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd | 1096 | return ret; |
1da177e4 LT |
1097 | } |
1098 | ||
c41f8cbd | 1099 | static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1100 | { |
7c7dc196 | 1101 | struct zfcp_fsf_ct_els *send_els = req->data; |
c41f8cbd | 1102 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1da177e4 | 1103 | |
c41f8cbd | 1104 | send_els->status = -EINVAL; |
1da177e4 | 1105 | |
c41f8cbd | 1106 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
1107 | goto skip_fsfstatus; |
1108 | ||
1109 | switch (header->fsf_status) { | |
1da177e4 | 1110 | case FSF_GOOD: |
2c55b750 | 1111 | zfcp_dbf_san_res("fsselh1", req); |
c41f8cbd | 1112 | send_els->status = 0; |
1da177e4 | 1113 | break; |
1da177e4 | 1114 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 1115 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 1116 | break; |
1da177e4 | 1117 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1118 | switch (header->fsf_status_qual.word[0]){ |
1119 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1120 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1121 | case FSF_SQ_RETRY_IF_POSSIBLE: |
c41f8cbd | 1122 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1123 | break; |
1da177e4 LT |
1124 | } |
1125 | break; | |
1da177e4 | 1126 | case FSF_ELS_COMMAND_REJECTED: |
1da177e4 | 1127 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1128 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1129 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1130 | break; |
c41f8cbd | 1131 | case FSF_SBAL_MISMATCH: |
25985edc | 1132 | /* should never occur, avoided in zfcp_fsf_send_els */ |
c41f8cbd | 1133 | /* fall through */ |
1da177e4 | 1134 | default: |
c41f8cbd | 1135 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1136 | break; |
1137 | } | |
1da177e4 | 1138 | skip_fsfstatus: |
aa551daf | 1139 | if (send_els->handler) |
1da177e4 | 1140 | send_els->handler(send_els->handler_data); |
c41f8cbd | 1141 | } |
1da177e4 | 1142 | |
c41f8cbd SS |
1143 | /** |
1144 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) | |
1145 | * @els: pointer to struct zfcp_send_els with data for the command | |
1146 | */ | |
7c7dc196 | 1147 | int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id, |
51375ee8 | 1148 | struct zfcp_fsf_ct_els *els, unsigned int timeout) |
c41f8cbd SS |
1149 | { |
1150 | struct zfcp_fsf_req *req; | |
7c7dc196 | 1151 | struct zfcp_qdio *qdio = adapter->qdio; |
c41f8cbd SS |
1152 | int ret = -EIO; |
1153 | ||
44a24cb3 | 1154 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1155 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1156 | goto out; |
09a46c6e | 1157 | |
1674b405 | 1158 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS, |
3ec90878 | 1159 | SBAL_SFLAGS0_TYPE_WRITE_READ, NULL); |
09a46c6e | 1160 | |
025270f0 | 1161 | if (IS_ERR(req)) { |
c41f8cbd SS |
1162 | ret = PTR_ERR(req); |
1163 | goto out; | |
1164 | } | |
1165 | ||
09a46c6e | 1166 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
01b04759 | 1167 | |
86a9668a SS |
1168 | if (!zfcp_adapter_multi_buffer_active(adapter)) |
1169 | zfcp_qdio_sbal_limit(qdio, &req->qdio_req, 2); | |
01b04759 SS |
1170 | |
1171 | ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, timeout); | |
44cc76f2 | 1172 | |
c41f8cbd SS |
1173 | if (ret) |
1174 | goto failed_send; | |
1175 | ||
7c7dc196 | 1176 | hton24(req->qtcb->bottom.support.d_id, d_id); |
c41f8cbd | 1177 | req->handler = zfcp_fsf_send_els_handler; |
771bf035 | 1178 | els->d_id = d_id; |
c41f8cbd SS |
1179 | req->data = els; |
1180 | ||
2c55b750 | 1181 | zfcp_dbf_san_req("fssels1", req, d_id); |
c41f8cbd | 1182 | |
c41f8cbd SS |
1183 | ret = zfcp_fsf_req_send(req); |
1184 | if (ret) | |
1185 | goto failed_send; | |
1186 | ||
1187 | goto out; | |
1188 | ||
1189 | failed_send: | |
1190 | zfcp_fsf_req_free(req); | |
1191 | out: | |
44a24cb3 | 1192 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd | 1193 | return ret; |
1da177e4 LT |
1194 | } |
1195 | ||
c41f8cbd | 1196 | int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1197 | { |
c41f8cbd | 1198 | struct zfcp_fsf_req *req; |
564e1c86 | 1199 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1200 | int retval = -EIO; |
1201 | ||
44a24cb3 | 1202 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1203 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1204 | goto out; |
09a46c6e | 1205 | |
564e1c86 | 1206 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, |
3ec90878 | 1207 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1208 | qdio->adapter->pool.erp_req); |
09a46c6e | 1209 | |
025270f0 | 1210 | if (IS_ERR(req)) { |
c41f8cbd SS |
1211 | retval = PTR_ERR(req); |
1212 | goto out; | |
1da177e4 LT |
1213 | } |
1214 | ||
09a46c6e | 1215 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1216 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1217 | |
c41f8cbd | 1218 | req->qtcb->bottom.config.feature_selection = |
9eb69aff | 1219 | FSF_FEATURE_NOTIFICATION_LOST | |
aef4a983 | 1220 | FSF_FEATURE_UPDATE_ALERT; |
c41f8cbd SS |
1221 | req->erp_action = erp_action; |
1222 | req->handler = zfcp_fsf_exchange_config_data_handler; | |
e60a6d69 | 1223 | erp_action->fsf_req_id = req->req_id; |
1da177e4 | 1224 | |
287ac01a | 1225 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1226 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1227 | if (retval) { |
c41f8cbd | 1228 | zfcp_fsf_req_free(req); |
e60a6d69 | 1229 | erp_action->fsf_req_id = 0; |
1da177e4 | 1230 | } |
c41f8cbd | 1231 | out: |
44a24cb3 | 1232 | spin_unlock_irq(&qdio->req_q_lock); |
52ef11a7 SS |
1233 | return retval; |
1234 | } | |
1da177e4 | 1235 | |
564e1c86 | 1236 | int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio, |
c41f8cbd | 1237 | struct fsf_qtcb_bottom_config *data) |
52ef11a7 | 1238 | { |
c41f8cbd SS |
1239 | struct zfcp_fsf_req *req = NULL; |
1240 | int retval = -EIO; | |
1241 | ||
44a24cb3 | 1242 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1243 | if (zfcp_qdio_sbal_get(qdio)) |
ada81b74 | 1244 | goto out_unlock; |
c41f8cbd | 1245 | |
1674b405 | 1246 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, |
3ec90878 | 1247 | SBAL_SFLAGS0_TYPE_READ, NULL); |
09a46c6e | 1248 | |
025270f0 | 1249 | if (IS_ERR(req)) { |
c41f8cbd | 1250 | retval = PTR_ERR(req); |
ada81b74 | 1251 | goto out_unlock; |
52ef11a7 SS |
1252 | } |
1253 | ||
1674b405 | 1254 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
c41f8cbd | 1255 | req->handler = zfcp_fsf_exchange_config_data_handler; |
52ef11a7 | 1256 | |
c41f8cbd | 1257 | req->qtcb->bottom.config.feature_selection = |
52ef11a7 SS |
1258 | FSF_FEATURE_NOTIFICATION_LOST | |
1259 | FSF_FEATURE_UPDATE_ALERT; | |
1260 | ||
1261 | if (data) | |
c41f8cbd | 1262 | req->data = data; |
52ef11a7 | 1263 | |
c41f8cbd SS |
1264 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
1265 | retval = zfcp_fsf_req_send(req); | |
44a24cb3 | 1266 | spin_unlock_irq(&qdio->req_q_lock); |
553448f6 | 1267 | if (!retval) |
058b8647 | 1268 | wait_for_completion(&req->completion); |
52ef11a7 | 1269 | |
c41f8cbd | 1270 | zfcp_fsf_req_free(req); |
ada81b74 | 1271 | return retval; |
52ef11a7 | 1272 | |
ada81b74 | 1273 | out_unlock: |
44a24cb3 | 1274 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1275 | return retval; |
1276 | } | |
1277 | ||
1da177e4 LT |
1278 | /** |
1279 | * zfcp_fsf_exchange_port_data - request information about local port | |
aef4a983 | 1280 | * @erp_action: ERP action for the adapter for which port data is requested |
c41f8cbd | 1281 | * Returns: 0 on success, error otherwise |
1da177e4 | 1282 | */ |
c41f8cbd | 1283 | int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1284 | { |
564e1c86 | 1285 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd | 1286 | struct zfcp_fsf_req *req; |
c41f8cbd | 1287 | int retval = -EIO; |
1da177e4 | 1288 | |
564e1c86 | 1289 | if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1290 | return -EOPNOTSUPP; |
1da177e4 | 1291 | |
44a24cb3 | 1292 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1293 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1294 | goto out; |
09a46c6e | 1295 | |
564e1c86 | 1296 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, |
3ec90878 | 1297 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1298 | qdio->adapter->pool.erp_req); |
09a46c6e | 1299 | |
025270f0 | 1300 | if (IS_ERR(req)) { |
c41f8cbd SS |
1301 | retval = PTR_ERR(req); |
1302 | goto out; | |
aef4a983 MS |
1303 | } |
1304 | ||
09a46c6e | 1305 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1306 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1307 | |
c41f8cbd SS |
1308 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1309 | req->erp_action = erp_action; | |
e60a6d69 | 1310 | erp_action->fsf_req_id = req->req_id; |
52ef11a7 | 1311 | |
287ac01a | 1312 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1313 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1314 | if (retval) { |
c41f8cbd | 1315 | zfcp_fsf_req_free(req); |
e60a6d69 | 1316 | erp_action->fsf_req_id = 0; |
52ef11a7 | 1317 | } |
c41f8cbd | 1318 | out: |
44a24cb3 | 1319 | spin_unlock_irq(&qdio->req_q_lock); |
52ef11a7 SS |
1320 | return retval; |
1321 | } | |
1322 | ||
52ef11a7 SS |
1323 | /** |
1324 | * zfcp_fsf_exchange_port_data_sync - request information about local port | |
564e1c86 | 1325 | * @qdio: pointer to struct zfcp_qdio |
c41f8cbd SS |
1326 | * @data: pointer to struct fsf_qtcb_bottom_port |
1327 | * Returns: 0 on success, error otherwise | |
52ef11a7 | 1328 | */ |
564e1c86 | 1329 | int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio, |
c41f8cbd | 1330 | struct fsf_qtcb_bottom_port *data) |
52ef11a7 | 1331 | { |
c41f8cbd SS |
1332 | struct zfcp_fsf_req *req = NULL; |
1333 | int retval = -EIO; | |
52ef11a7 | 1334 | |
564e1c86 | 1335 | if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1336 | return -EOPNOTSUPP; |
52ef11a7 | 1337 | |
44a24cb3 | 1338 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1339 | if (zfcp_qdio_sbal_get(qdio)) |
ada81b74 | 1340 | goto out_unlock; |
c41f8cbd | 1341 | |
1674b405 | 1342 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, |
3ec90878 | 1343 | SBAL_SFLAGS0_TYPE_READ, NULL); |
09a46c6e | 1344 | |
025270f0 | 1345 | if (IS_ERR(req)) { |
c41f8cbd | 1346 | retval = PTR_ERR(req); |
ada81b74 | 1347 | goto out_unlock; |
1da177e4 LT |
1348 | } |
1349 | ||
52ef11a7 | 1350 | if (data) |
c41f8cbd | 1351 | req->data = data; |
52ef11a7 | 1352 | |
1674b405 | 1353 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
52ef11a7 | 1354 | |
c41f8cbd SS |
1355 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1356 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1357 | retval = zfcp_fsf_req_send(req); | |
44a24cb3 | 1358 | spin_unlock_irq(&qdio->req_q_lock); |
ada81b74 | 1359 | |
553448f6 | 1360 | if (!retval) |
058b8647 SS |
1361 | wait_for_completion(&req->completion); |
1362 | ||
c41f8cbd | 1363 | zfcp_fsf_req_free(req); |
1da177e4 | 1364 | |
1da177e4 | 1365 | return retval; |
ada81b74 CS |
1366 | |
1367 | out_unlock: | |
44a24cb3 | 1368 | spin_unlock_irq(&qdio->req_q_lock); |
ada81b74 | 1369 | return retval; |
1da177e4 LT |
1370 | } |
1371 | ||
c41f8cbd | 1372 | static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1373 | { |
c41f8cbd SS |
1374 | struct zfcp_port *port = req->data; |
1375 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
9d05ce2c | 1376 | struct fc_els_flogi *plogi; |
1da177e4 | 1377 | |
c41f8cbd | 1378 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
a17c5855 | 1379 | goto out; |
1da177e4 | 1380 | |
1da177e4 | 1381 | switch (header->fsf_status) { |
1da177e4 | 1382 | case FSF_PORT_ALREADY_OPEN: |
1da177e4 | 1383 | break; |
1da177e4 | 1384 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: |
c41f8cbd | 1385 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 1386 | "Not enough FCP adapter resources to open " |
7ba58c9c SS |
1387 | "remote port 0x%016Lx\n", |
1388 | (unsigned long long)port->wwpn); | |
edaed859 SS |
1389 | zfcp_erp_set_port_status(port, |
1390 | ZFCP_STATUS_COMMON_ERP_FAILED); | |
c41f8cbd | 1391 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1392 | break; |
1da177e4 | 1393 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1394 | switch (header->fsf_status_qual.word[0]) { |
1395 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1396 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1397 | case FSF_SQ_NO_RETRY_POSSIBLE: |
c41f8cbd | 1398 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1399 | break; |
1400 | } | |
1401 | break; | |
1da177e4 | 1402 | case FSF_GOOD: |
1da177e4 | 1403 | port->handle = header->port_handle; |
805de8f4 | 1404 | atomic_or(ZFCP_STATUS_COMMON_OPEN | |
1da177e4 | 1405 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); |
805de8f4 | 1406 | atomic_andnot(ZFCP_STATUS_COMMON_ACCESS_BOXED, |
d736a27b | 1407 | &port->status); |
1da177e4 LT |
1408 | /* check whether D_ID has changed during open */ |
1409 | /* | |
1410 | * FIXME: This check is not airtight, as the FCP channel does | |
1411 | * not monitor closures of target port connections caused on | |
1412 | * the remote side. Thus, they might miss out on invalidating | |
1413 | * locally cached WWPNs (and other N_Port parameters) of gone | |
1414 | * target ports. So, our heroic attempt to make things safe | |
1415 | * could be undermined by 'open port' response data tagged with | |
1416 | * obsolete WWPNs. Another reason to monitor potential | |
1417 | * connection closures ourself at least (by interpreting | |
1418 | * incoming ELS' and unsolicited status). It just crosses my | |
1419 | * mind that one should be able to cross-check by means of | |
1420 | * another GID_PN straight after a port has been opened. | |
1421 | * Alternately, an ADISC/PDISC ELS should suffice, as well. | |
1422 | */ | |
9d05ce2c | 1423 | plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els; |
39eb7e9a | 1424 | if (req->qtcb->bottom.support.els1_length >= |
9d05ce2c | 1425 | FSF_PLOGI_MIN_LEN) |
c41f8cbd | 1426 | zfcp_fc_plogi_evaluate(port, plogi); |
1da177e4 | 1427 | break; |
1da177e4 | 1428 | case FSF_UNKNOWN_OP_SUBTYPE: |
c41f8cbd | 1429 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1430 | break; |
1431 | } | |
a17c5855 MP |
1432 | |
1433 | out: | |
615f59e0 | 1434 | put_device(&port->dev); |
1da177e4 LT |
1435 | } |
1436 | ||
c41f8cbd SS |
1437 | /** |
1438 | * zfcp_fsf_open_port - create and send open port request | |
1439 | * @erp_action: pointer to struct zfcp_erp_action | |
1440 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1441 | */ |
c41f8cbd | 1442 | int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1443 | { |
564e1c86 | 1444 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
a17c5855 | 1445 | struct zfcp_port *port = erp_action->port; |
564e1c86 | 1446 | struct zfcp_fsf_req *req; |
c41f8cbd SS |
1447 | int retval = -EIO; |
1448 | ||
44a24cb3 | 1449 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1450 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd SS |
1451 | goto out; |
1452 | ||
564e1c86 | 1453 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID, |
3ec90878 | 1454 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1455 | qdio->adapter->pool.erp_req); |
09a46c6e | 1456 | |
025270f0 | 1457 | if (IS_ERR(req)) { |
c41f8cbd | 1458 | retval = PTR_ERR(req); |
1da177e4 | 1459 | goto out; |
c41f8cbd | 1460 | } |
1da177e4 | 1461 | |
09a46c6e | 1462 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1463 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1464 | |
c41f8cbd | 1465 | req->handler = zfcp_fsf_open_port_handler; |
800c0cad | 1466 | hton24(req->qtcb->bottom.support.d_id, port->d_id); |
a17c5855 | 1467 | req->data = port; |
c41f8cbd | 1468 | req->erp_action = erp_action; |
e60a6d69 | 1469 | erp_action->fsf_req_id = req->req_id; |
615f59e0 | 1470 | get_device(&port->dev); |
c41f8cbd | 1471 | |
287ac01a | 1472 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1473 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1474 | if (retval) { |
c41f8cbd | 1475 | zfcp_fsf_req_free(req); |
e60a6d69 | 1476 | erp_action->fsf_req_id = 0; |
615f59e0 | 1477 | put_device(&port->dev); |
1da177e4 | 1478 | } |
c41f8cbd | 1479 | out: |
44a24cb3 | 1480 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1481 | return retval; |
1482 | } | |
1483 | ||
c41f8cbd | 1484 | static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1485 | { |
c41f8cbd | 1486 | struct zfcp_port *port = req->data; |
1da177e4 | 1487 | |
c41f8cbd | 1488 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1489 | return; |
1da177e4 | 1490 | |
c41f8cbd | 1491 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1492 | case FSF_PORT_HANDLE_NOT_VALID: |
ea4a3a6a | 1493 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1"); |
c41f8cbd | 1494 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1495 | break; |
1da177e4 | 1496 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 | 1497 | break; |
1da177e4 | 1498 | case FSF_GOOD: |
edaed859 | 1499 | zfcp_erp_clear_port_status(port, ZFCP_STATUS_COMMON_OPEN); |
1da177e4 | 1500 | break; |
1da177e4 | 1501 | } |
1da177e4 LT |
1502 | } |
1503 | ||
c41f8cbd SS |
1504 | /** |
1505 | * zfcp_fsf_close_port - create and send close port request | |
1506 | * @erp_action: pointer to struct zfcp_erp_action | |
1507 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1508 | */ |
c41f8cbd | 1509 | int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1510 | { |
564e1c86 | 1511 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1512 | struct zfcp_fsf_req *req; |
1513 | int retval = -EIO; | |
1514 | ||
44a24cb3 | 1515 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1516 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd SS |
1517 | goto out; |
1518 | ||
564e1c86 | 1519 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT, |
3ec90878 | 1520 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1521 | qdio->adapter->pool.erp_req); |
09a46c6e | 1522 | |
025270f0 | 1523 | if (IS_ERR(req)) { |
c41f8cbd | 1524 | retval = PTR_ERR(req); |
1da177e4 | 1525 | goto out; |
c41f8cbd | 1526 | } |
1da177e4 | 1527 | |
09a46c6e | 1528 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1529 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1530 | |
c41f8cbd SS |
1531 | req->handler = zfcp_fsf_close_port_handler; |
1532 | req->data = erp_action->port; | |
1533 | req->erp_action = erp_action; | |
1534 | req->qtcb->header.port_handle = erp_action->port->handle; | |
e60a6d69 | 1535 | erp_action->fsf_req_id = req->req_id; |
c41f8cbd | 1536 | |
287ac01a | 1537 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1538 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1539 | if (retval) { |
c41f8cbd | 1540 | zfcp_fsf_req_free(req); |
e60a6d69 | 1541 | erp_action->fsf_req_id = 0; |
1da177e4 | 1542 | } |
c41f8cbd | 1543 | out: |
44a24cb3 | 1544 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1545 | return retval; |
1546 | } | |
1547 | ||
5ab944f9 SS |
1548 | static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req) |
1549 | { | |
bd0072ec | 1550 | struct zfcp_fc_wka_port *wka_port = req->data; |
5ab944f9 SS |
1551 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1552 | ||
1553 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
bd0072ec | 1554 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 SS |
1555 | goto out; |
1556 | } | |
1557 | ||
1558 | switch (header->fsf_status) { | |
1559 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: | |
1560 | dev_warn(&req->adapter->ccw_device->dev, | |
1561 | "Opening WKA port 0x%x failed\n", wka_port->d_id); | |
dceab655 | 1562 | /* fall through */ |
5ab944f9 SS |
1563 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1564 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
bd0072ec | 1565 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 | 1566 | break; |
5ab944f9 SS |
1567 | case FSF_GOOD: |
1568 | wka_port->handle = header->port_handle; | |
27f492cc SS |
1569 | /* fall through */ |
1570 | case FSF_PORT_ALREADY_OPEN: | |
bd0072ec | 1571 | wka_port->status = ZFCP_FC_WKA_PORT_ONLINE; |
5ab944f9 SS |
1572 | } |
1573 | out: | |
1574 | wake_up(&wka_port->completion_wq); | |
1575 | } | |
1576 | ||
1577 | /** | |
1578 | * zfcp_fsf_open_wka_port - create and send open wka-port request | |
bd0072ec | 1579 | * @wka_port: pointer to struct zfcp_fc_wka_port |
5ab944f9 SS |
1580 | * Returns: 0 on success, error otherwise |
1581 | */ | |
bd0072ec | 1582 | int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port) |
5ab944f9 | 1583 | { |
564e1c86 | 1584 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
2dfa6688 | 1585 | struct zfcp_fsf_req *req; |
5ab944f9 SS |
1586 | int retval = -EIO; |
1587 | ||
44a24cb3 | 1588 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1589 | if (zfcp_qdio_sbal_get(qdio)) |
5ab944f9 SS |
1590 | goto out; |
1591 | ||
564e1c86 | 1592 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID, |
3ec90878 | 1593 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1594 | qdio->adapter->pool.erp_req); |
09a46c6e | 1595 | |
4e7d7af4 | 1596 | if (IS_ERR(req)) { |
5ab944f9 SS |
1597 | retval = PTR_ERR(req); |
1598 | goto out; | |
1599 | } | |
1600 | ||
09a46c6e | 1601 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1602 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
5ab944f9 SS |
1603 | |
1604 | req->handler = zfcp_fsf_open_wka_port_handler; | |
800c0cad | 1605 | hton24(req->qtcb->bottom.support.d_id, wka_port->d_id); |
5ab944f9 SS |
1606 | req->data = wka_port; |
1607 | ||
1608 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1609 | retval = zfcp_fsf_req_send(req); | |
1610 | if (retval) | |
1611 | zfcp_fsf_req_free(req); | |
1612 | out: | |
44a24cb3 | 1613 | spin_unlock_irq(&qdio->req_q_lock); |
2dfa6688 | 1614 | if (!retval) |
d27a7cb9 | 1615 | zfcp_dbf_rec_run_wka("fsowp_1", wka_port, req->req_id); |
5ab944f9 SS |
1616 | return retval; |
1617 | } | |
1618 | ||
1619 | static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req) | |
1620 | { | |
bd0072ec | 1621 | struct zfcp_fc_wka_port *wka_port = req->data; |
5ab944f9 SS |
1622 | |
1623 | if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) { | |
1624 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
ea4a3a6a | 1625 | zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1"); |
5ab944f9 SS |
1626 | } |
1627 | ||
bd0072ec | 1628 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 SS |
1629 | wake_up(&wka_port->completion_wq); |
1630 | } | |
1631 | ||
1632 | /** | |
1633 | * zfcp_fsf_close_wka_port - create and send close wka port request | |
bd0072ec | 1634 | * @wka_port: WKA port to open |
5ab944f9 SS |
1635 | * Returns: 0 on success, error otherwise |
1636 | */ | |
bd0072ec | 1637 | int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port) |
5ab944f9 | 1638 | { |
564e1c86 | 1639 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
2dfa6688 | 1640 | struct zfcp_fsf_req *req; |
5ab944f9 SS |
1641 | int retval = -EIO; |
1642 | ||
44a24cb3 | 1643 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1644 | if (zfcp_qdio_sbal_get(qdio)) |
5ab944f9 SS |
1645 | goto out; |
1646 | ||
564e1c86 | 1647 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT, |
3ec90878 | 1648 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1649 | qdio->adapter->pool.erp_req); |
09a46c6e | 1650 | |
4e7d7af4 | 1651 | if (IS_ERR(req)) { |
5ab944f9 SS |
1652 | retval = PTR_ERR(req); |
1653 | goto out; | |
1654 | } | |
1655 | ||
09a46c6e | 1656 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1657 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
5ab944f9 SS |
1658 | |
1659 | req->handler = zfcp_fsf_close_wka_port_handler; | |
1660 | req->data = wka_port; | |
1661 | req->qtcb->header.port_handle = wka_port->handle; | |
1662 | ||
1663 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1664 | retval = zfcp_fsf_req_send(req); | |
1665 | if (retval) | |
1666 | zfcp_fsf_req_free(req); | |
1667 | out: | |
44a24cb3 | 1668 | spin_unlock_irq(&qdio->req_q_lock); |
2dfa6688 | 1669 | if (!retval) |
d27a7cb9 | 1670 | zfcp_dbf_rec_run_wka("fscwp_1", wka_port, req->req_id); |
5ab944f9 SS |
1671 | return retval; |
1672 | } | |
1673 | ||
c41f8cbd | 1674 | static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1675 | { |
c41f8cbd SS |
1676 | struct zfcp_port *port = req->data; |
1677 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
b62a8d9b | 1678 | struct scsi_device *sdev; |
1da177e4 | 1679 | |
c41f8cbd | 1680 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
a5b11dda | 1681 | return; |
1da177e4 | 1682 | |
1da177e4 | 1683 | switch (header->fsf_status) { |
1da177e4 | 1684 | case FSF_PORT_HANDLE_NOT_VALID: |
ea4a3a6a | 1685 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1"); |
c41f8cbd | 1686 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1687 | break; |
1da177e4 | 1688 | case FSF_PORT_BOXED: |
5c815d15 CS |
1689 | /* can't use generic zfcp_erp_modify_port_status because |
1690 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */ | |
805de8f4 | 1691 | atomic_andnot(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); |
b62a8d9b CS |
1692 | shost_for_each_device(sdev, port->adapter->scsi_host) |
1693 | if (sdev_to_zfcp(sdev)->port == port) | |
805de8f4 | 1694 | atomic_andnot(ZFCP_STATUS_COMMON_OPEN, |
b62a8d9b | 1695 | &sdev_to_zfcp(sdev)->status); |
edaed859 SS |
1696 | zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ACCESS_BOXED); |
1697 | zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, | |
ea4a3a6a | 1698 | "fscpph2"); |
4c571c65 | 1699 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1700 | break; |
1da177e4 | 1701 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1702 | switch (header->fsf_status_qual.word[0]) { |
1703 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
c41f8cbd | 1704 | /* fall through */ |
1da177e4 | 1705 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1706 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1707 | break; |
1da177e4 LT |
1708 | } |
1709 | break; | |
1da177e4 | 1710 | case FSF_GOOD: |
1da177e4 LT |
1711 | /* can't use generic zfcp_erp_modify_port_status because |
1712 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port | |
1713 | */ | |
805de8f4 | 1714 | atomic_andnot(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); |
b62a8d9b CS |
1715 | shost_for_each_device(sdev, port->adapter->scsi_host) |
1716 | if (sdev_to_zfcp(sdev)->port == port) | |
805de8f4 | 1717 | atomic_andnot(ZFCP_STATUS_COMMON_OPEN, |
b62a8d9b | 1718 | &sdev_to_zfcp(sdev)->status); |
1da177e4 | 1719 | break; |
1da177e4 | 1720 | } |
1da177e4 LT |
1721 | } |
1722 | ||
c41f8cbd SS |
1723 | /** |
1724 | * zfcp_fsf_close_physical_port - close physical port | |
1725 | * @erp_action: pointer to struct zfcp_erp_action | |
1726 | * Returns: 0 on success | |
1da177e4 | 1727 | */ |
c41f8cbd | 1728 | int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1729 | { |
564e1c86 | 1730 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1731 | struct zfcp_fsf_req *req; |
1732 | int retval = -EIO; | |
1733 | ||
44a24cb3 | 1734 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1735 | if (zfcp_qdio_sbal_get(qdio)) |
1da177e4 | 1736 | goto out; |
1da177e4 | 1737 | |
564e1c86 | 1738 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT, |
3ec90878 | 1739 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1740 | qdio->adapter->pool.erp_req); |
09a46c6e | 1741 | |
025270f0 | 1742 | if (IS_ERR(req)) { |
c41f8cbd SS |
1743 | retval = PTR_ERR(req); |
1744 | goto out; | |
1745 | } | |
1da177e4 | 1746 | |
09a46c6e | 1747 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1748 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1749 | |
c41f8cbd SS |
1750 | req->data = erp_action->port; |
1751 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1752 | req->erp_action = erp_action; | |
1753 | req->handler = zfcp_fsf_close_physical_port_handler; | |
e60a6d69 | 1754 | erp_action->fsf_req_id = req->req_id; |
c41f8cbd | 1755 | |
287ac01a | 1756 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1757 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1758 | if (retval) { |
c41f8cbd | 1759 | zfcp_fsf_req_free(req); |
e60a6d69 | 1760 | erp_action->fsf_req_id = 0; |
1da177e4 | 1761 | } |
c41f8cbd | 1762 | out: |
44a24cb3 | 1763 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1764 | return retval; |
1765 | } | |
1766 | ||
b62a8d9b | 1767 | static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1768 | { |
c41f8cbd | 1769 | struct zfcp_adapter *adapter = req->adapter; |
b62a8d9b | 1770 | struct scsi_device *sdev = req->data; |
d436de8c | 1771 | struct zfcp_scsi_dev *zfcp_sdev; |
c41f8cbd | 1772 | struct fsf_qtcb_header *header = &req->qtcb->header; |
663e0890 | 1773 | union fsf_status_qual *qual = &header->fsf_status_qual; |
1da177e4 | 1774 | |
c41f8cbd | 1775 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1776 | return; |
1da177e4 | 1777 | |
d436de8c MP |
1778 | zfcp_sdev = sdev_to_zfcp(sdev); |
1779 | ||
805de8f4 | 1780 | atomic_andnot(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
663e0890 | 1781 | ZFCP_STATUS_COMMON_ACCESS_BOXED, |
b62a8d9b | 1782 | &zfcp_sdev->status); |
1da177e4 | 1783 | |
1da177e4 LT |
1784 | switch (header->fsf_status) { |
1785 | ||
1786 | case FSF_PORT_HANDLE_NOT_VALID: | |
ea4a3a6a | 1787 | zfcp_erp_adapter_reopen(adapter, 0, "fsouh_1"); |
c41f8cbd | 1788 | /* fall through */ |
1da177e4 | 1789 | case FSF_LUN_ALREADY_OPEN: |
1da177e4 | 1790 | break; |
1da177e4 | 1791 | case FSF_PORT_BOXED: |
edaed859 SS |
1792 | zfcp_erp_set_port_status(zfcp_sdev->port, |
1793 | ZFCP_STATUS_COMMON_ACCESS_BOXED); | |
1794 | zfcp_erp_port_reopen(zfcp_sdev->port, | |
ea4a3a6a | 1795 | ZFCP_STATUS_COMMON_ERP_FAILED, "fsouh_2"); |
4c571c65 | 1796 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1797 | break; |
1da177e4 | 1798 | case FSF_LUN_SHARING_VIOLATION: |
663e0890 MP |
1799 | if (qual->word[0]) |
1800 | dev_warn(&zfcp_sdev->port->adapter->ccw_device->dev, | |
1801 | "LUN 0x%Lx on port 0x%Lx is already in " | |
1802 | "use by CSS%d, MIF Image ID %x\n", | |
1803 | zfcp_scsi_dev_lun(sdev), | |
1804 | (unsigned long long)zfcp_sdev->port->wwpn, | |
1805 | qual->fsf_queue_designator.cssid, | |
1806 | qual->fsf_queue_designator.hla); | |
1807 | zfcp_erp_set_lun_status(sdev, | |
1808 | ZFCP_STATUS_COMMON_ERP_FAILED | | |
1809 | ZFCP_STATUS_COMMON_ACCESS_DENIED); | |
c41f8cbd | 1810 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1811 | break; |
1da177e4 | 1812 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: |
c41f8cbd | 1813 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1814 | "No handle is available for LUN " |
1815 | "0x%016Lx on port 0x%016Lx\n", | |
b62a8d9b CS |
1816 | (unsigned long long)zfcp_scsi_dev_lun(sdev), |
1817 | (unsigned long long)zfcp_sdev->port->wwpn); | |
edaed859 | 1818 | zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ERP_FAILED); |
c41f8cbd SS |
1819 | /* fall through */ |
1820 | case FSF_INVALID_COMMAND_OPTION: | |
1821 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1822 | break; |
1da177e4 | 1823 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1824 | switch (header->fsf_status_qual.word[0]) { |
1825 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
b62a8d9b | 1826 | zfcp_fc_test_link(zfcp_sdev->port); |
c41f8cbd | 1827 | /* fall through */ |
1da177e4 | 1828 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1829 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1830 | break; |
1da177e4 LT |
1831 | } |
1832 | break; | |
1833 | ||
1da177e4 | 1834 | case FSF_GOOD: |
b62a8d9b | 1835 | zfcp_sdev->lun_handle = header->lun_handle; |
805de8f4 | 1836 | atomic_or(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status); |
1da177e4 | 1837 | break; |
1da177e4 | 1838 | } |
1da177e4 LT |
1839 | } |
1840 | ||
c41f8cbd | 1841 | /** |
b62a8d9b | 1842 | * zfcp_fsf_open_lun - open LUN |
c41f8cbd SS |
1843 | * @erp_action: pointer to struct zfcp_erp_action |
1844 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1845 | */ |
b62a8d9b | 1846 | int zfcp_fsf_open_lun(struct zfcp_erp_action *erp_action) |
1da177e4 | 1847 | { |
c41f8cbd | 1848 | struct zfcp_adapter *adapter = erp_action->adapter; |
564e1c86 | 1849 | struct zfcp_qdio *qdio = adapter->qdio; |
c41f8cbd SS |
1850 | struct zfcp_fsf_req *req; |
1851 | int retval = -EIO; | |
1852 | ||
44a24cb3 | 1853 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1854 | if (zfcp_qdio_sbal_get(qdio)) |
1da177e4 | 1855 | goto out; |
1da177e4 | 1856 | |
564e1c86 | 1857 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN, |
3ec90878 | 1858 | SBAL_SFLAGS0_TYPE_READ, |
a4623c46 | 1859 | adapter->pool.erp_req); |
09a46c6e | 1860 | |
025270f0 | 1861 | if (IS_ERR(req)) { |
c41f8cbd SS |
1862 | retval = PTR_ERR(req); |
1863 | goto out; | |
1864 | } | |
1865 | ||
09a46c6e | 1866 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1867 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1868 | |
c41f8cbd | 1869 | req->qtcb->header.port_handle = erp_action->port->handle; |
b62a8d9b CS |
1870 | req->qtcb->bottom.support.fcp_lun = zfcp_scsi_dev_lun(erp_action->sdev); |
1871 | req->handler = zfcp_fsf_open_lun_handler; | |
1872 | req->data = erp_action->sdev; | |
c41f8cbd | 1873 | req->erp_action = erp_action; |
e60a6d69 | 1874 | erp_action->fsf_req_id = req->req_id; |
c41f8cbd SS |
1875 | |
1876 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) | |
1877 | req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING; | |
1878 | ||
287ac01a | 1879 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1880 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1881 | if (retval) { |
c41f8cbd | 1882 | zfcp_fsf_req_free(req); |
e60a6d69 | 1883 | erp_action->fsf_req_id = 0; |
1da177e4 | 1884 | } |
c41f8cbd | 1885 | out: |
44a24cb3 | 1886 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1887 | return retval; |
1888 | } | |
1889 | ||
b62a8d9b | 1890 | static void zfcp_fsf_close_lun_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1891 | { |
b62a8d9b | 1892 | struct scsi_device *sdev = req->data; |
d436de8c | 1893 | struct zfcp_scsi_dev *zfcp_sdev; |
1da177e4 | 1894 | |
c41f8cbd | 1895 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1896 | return; |
1da177e4 | 1897 | |
d436de8c MP |
1898 | zfcp_sdev = sdev_to_zfcp(sdev); |
1899 | ||
c41f8cbd | 1900 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1901 | case FSF_PORT_HANDLE_NOT_VALID: |
ea4a3a6a | 1902 | zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fscuh_1"); |
c41f8cbd | 1903 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1904 | break; |
1da177e4 | 1905 | case FSF_LUN_HANDLE_NOT_VALID: |
ea4a3a6a | 1906 | zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fscuh_2"); |
c41f8cbd | 1907 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1908 | break; |
1da177e4 | 1909 | case FSF_PORT_BOXED: |
edaed859 SS |
1910 | zfcp_erp_set_port_status(zfcp_sdev->port, |
1911 | ZFCP_STATUS_COMMON_ACCESS_BOXED); | |
1912 | zfcp_erp_port_reopen(zfcp_sdev->port, | |
ea4a3a6a | 1913 | ZFCP_STATUS_COMMON_ERP_FAILED, "fscuh_3"); |
4c571c65 | 1914 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1915 | break; |
1da177e4 | 1916 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 1917 | switch (req->qtcb->header.fsf_status_qual.word[0]) { |
1da177e4 | 1918 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
b62a8d9b | 1919 | zfcp_fc_test_link(zfcp_sdev->port); |
c41f8cbd | 1920 | /* fall through */ |
1da177e4 | 1921 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1922 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1923 | break; |
1924 | } | |
1925 | break; | |
1da177e4 | 1926 | case FSF_GOOD: |
805de8f4 | 1927 | atomic_andnot(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status); |
1da177e4 | 1928 | break; |
1da177e4 | 1929 | } |
1da177e4 LT |
1930 | } |
1931 | ||
1932 | /** | |
b62a8d9b CS |
1933 | * zfcp_fsf_close_LUN - close LUN |
1934 | * @erp_action: pointer to erp_action triggering the "close LUN" | |
c41f8cbd | 1935 | * Returns: 0 on success, error otherwise |
1da177e4 | 1936 | */ |
b62a8d9b | 1937 | int zfcp_fsf_close_lun(struct zfcp_erp_action *erp_action) |
1da177e4 | 1938 | { |
564e1c86 | 1939 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
b62a8d9b | 1940 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(erp_action->sdev); |
c41f8cbd SS |
1941 | struct zfcp_fsf_req *req; |
1942 | int retval = -EIO; | |
1da177e4 | 1943 | |
44a24cb3 | 1944 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1945 | if (zfcp_qdio_sbal_get(qdio)) |
1da177e4 | 1946 | goto out; |
09a46c6e | 1947 | |
564e1c86 | 1948 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN, |
3ec90878 | 1949 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1950 | qdio->adapter->pool.erp_req); |
09a46c6e | 1951 | |
025270f0 | 1952 | if (IS_ERR(req)) { |
c41f8cbd SS |
1953 | retval = PTR_ERR(req); |
1954 | goto out; | |
1955 | } | |
1da177e4 | 1956 | |
09a46c6e | 1957 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1958 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1959 | |
c41f8cbd | 1960 | req->qtcb->header.port_handle = erp_action->port->handle; |
b62a8d9b CS |
1961 | req->qtcb->header.lun_handle = zfcp_sdev->lun_handle; |
1962 | req->handler = zfcp_fsf_close_lun_handler; | |
1963 | req->data = erp_action->sdev; | |
c41f8cbd | 1964 | req->erp_action = erp_action; |
e60a6d69 | 1965 | erp_action->fsf_req_id = req->req_id; |
fdf23452 | 1966 | |
287ac01a | 1967 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
1968 | retval = zfcp_fsf_req_send(req); |
1969 | if (retval) { | |
1970 | zfcp_fsf_req_free(req); | |
e60a6d69 | 1971 | erp_action->fsf_req_id = 0; |
c41f8cbd SS |
1972 | } |
1973 | out: | |
44a24cb3 | 1974 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd | 1975 | return retval; |
1da177e4 LT |
1976 | } |
1977 | ||
c9615858 CS |
1978 | static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat) |
1979 | { | |
1980 | lat_rec->sum += lat; | |
c41f8cbd SS |
1981 | lat_rec->min = min(lat_rec->min, lat); |
1982 | lat_rec->max = max(lat_rec->max, lat); | |
c9615858 CS |
1983 | } |
1984 | ||
d9742b42 | 1985 | static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi) |
c9615858 | 1986 | { |
d9742b42 CS |
1987 | struct fsf_qual_latency_info *lat_in; |
1988 | struct latency_cont *lat = NULL; | |
d436de8c | 1989 | struct zfcp_scsi_dev *zfcp_sdev; |
d9742b42 CS |
1990 | struct zfcp_blk_drv_data blktrc; |
1991 | int ticks = req->adapter->timer_ticks; | |
c9615858 | 1992 | |
d9742b42 | 1993 | lat_in = &req->qtcb->prefix.prot_status_qual.latency_info; |
c9615858 | 1994 | |
d9742b42 CS |
1995 | blktrc.flags = 0; |
1996 | blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC; | |
1997 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
1998 | blktrc.flags |= ZFCP_BLK_REQ_ERROR; | |
706eca49 | 1999 | blktrc.inb_usage = 0; |
34c2b712 | 2000 | blktrc.outb_usage = req->qdio_req.qdio_outb_usage; |
d9742b42 | 2001 | |
5bbf297c CS |
2002 | if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA && |
2003 | !(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
d436de8c | 2004 | zfcp_sdev = sdev_to_zfcp(scsi->device); |
d9742b42 CS |
2005 | blktrc.flags |= ZFCP_BLK_LAT_VALID; |
2006 | blktrc.channel_lat = lat_in->channel_lat * ticks; | |
2007 | blktrc.fabric_lat = lat_in->fabric_lat * ticks; | |
2008 | ||
2009 | switch (req->qtcb->bottom.io.data_direction) { | |
ef3eb71d FB |
2010 | case FSF_DATADIR_DIF_READ_STRIP: |
2011 | case FSF_DATADIR_DIF_READ_CONVERT: | |
d9742b42 | 2012 | case FSF_DATADIR_READ: |
b62a8d9b | 2013 | lat = &zfcp_sdev->latencies.read; |
d9742b42 | 2014 | break; |
ef3eb71d FB |
2015 | case FSF_DATADIR_DIF_WRITE_INSERT: |
2016 | case FSF_DATADIR_DIF_WRITE_CONVERT: | |
d9742b42 | 2017 | case FSF_DATADIR_WRITE: |
b62a8d9b | 2018 | lat = &zfcp_sdev->latencies.write; |
d9742b42 CS |
2019 | break; |
2020 | case FSF_DATADIR_CMND: | |
b62a8d9b | 2021 | lat = &zfcp_sdev->latencies.cmd; |
d9742b42 CS |
2022 | break; |
2023 | } | |
1da177e4 | 2024 | |
d9742b42 | 2025 | if (lat) { |
b62a8d9b | 2026 | spin_lock(&zfcp_sdev->latencies.lock); |
d9742b42 CS |
2027 | zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat); |
2028 | zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat); | |
2029 | lat->counter++; | |
b62a8d9b | 2030 | spin_unlock(&zfcp_sdev->latencies.lock); |
d9742b42 | 2031 | } |
0997f1c5 | 2032 | } |
0997f1c5 | 2033 | |
d9742b42 CS |
2034 | blk_add_driver_data(scsi->request->q, scsi->request, &blktrc, |
2035 | sizeof(blktrc)); | |
0997f1c5 | 2036 | } |
0997f1c5 | 2037 | |
c61b536c | 2038 | static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req *req) |
c41f8cbd | 2039 | { |
b62a8d9b CS |
2040 | struct scsi_cmnd *scmnd = req->data; |
2041 | struct scsi_device *sdev = scmnd->device; | |
d436de8c | 2042 | struct zfcp_scsi_dev *zfcp_sdev; |
c41f8cbd SS |
2043 | struct fsf_qtcb_header *header = &req->qtcb->header; |
2044 | ||
c41f8cbd | 2045 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
c61b536c | 2046 | return; |
1da177e4 | 2047 | |
d436de8c MP |
2048 | zfcp_sdev = sdev_to_zfcp(sdev); |
2049 | ||
c41f8cbd SS |
2050 | switch (header->fsf_status) { |
2051 | case FSF_HANDLE_MISMATCH: | |
2052 | case FSF_PORT_HANDLE_NOT_VALID: | |
ea4a3a6a | 2053 | zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fssfch1"); |
c41f8cbd SS |
2054 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2055 | break; | |
2056 | case FSF_FCPLUN_NOT_VALID: | |
2057 | case FSF_LUN_HANDLE_NOT_VALID: | |
ea4a3a6a | 2058 | zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fssfch2"); |
c41f8cbd | 2059 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2060 | break; |
c41f8cbd SS |
2061 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
2062 | zfcp_fsf_class_not_supp(req); | |
1da177e4 | 2063 | break; |
c41f8cbd SS |
2064 | case FSF_DIRECTION_INDICATOR_NOT_VALID: |
2065 | dev_err(&req->adapter->ccw_device->dev, | |
b62a8d9b | 2066 | "Incorrect direction %d, LUN 0x%016Lx on port " |
ff3b24fa | 2067 | "0x%016Lx closed\n", |
c41f8cbd | 2068 | req->qtcb->bottom.io.data_direction, |
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 | "fssfch3"); |
c41f8cbd SS |
2073 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2074 | break; | |
2075 | case FSF_CMND_LENGTH_NOT_VALID: | |
2076 | dev_err(&req->adapter->ccw_device->dev, | |
b62a8d9b | 2077 | "Incorrect CDB length %d, LUN 0x%016Lx on " |
ff3b24fa | 2078 | "port 0x%016Lx closed\n", |
c41f8cbd | 2079 | req->qtcb->bottom.io.fcp_cmnd_length, |
b62a8d9b CS |
2080 | (unsigned long long)zfcp_scsi_dev_lun(sdev), |
2081 | (unsigned long long)zfcp_sdev->port->wwpn); | |
2082 | zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0, | |
ea4a3a6a | 2083 | "fssfch4"); |
c41f8cbd SS |
2084 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2085 | break; | |
2086 | case FSF_PORT_BOXED: | |
edaed859 SS |
2087 | zfcp_erp_set_port_status(zfcp_sdev->port, |
2088 | ZFCP_STATUS_COMMON_ACCESS_BOXED); | |
2089 | zfcp_erp_port_reopen(zfcp_sdev->port, | |
ea4a3a6a | 2090 | ZFCP_STATUS_COMMON_ERP_FAILED, "fssfch5"); |
4c571c65 | 2091 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
2092 | break; |
2093 | case FSF_LUN_BOXED: | |
edaed859 SS |
2094 | zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED); |
2095 | zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, | |
ea4a3a6a | 2096 | "fssfch6"); |
4c571c65 | 2097 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
2098 | break; |
2099 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
2100 | if (header->fsf_status_qual.word[0] == | |
2101 | FSF_SQ_INVOKE_LINK_TEST_PROCEDURE) | |
b62a8d9b | 2102 | zfcp_fc_test_link(zfcp_sdev->port); |
c41f8cbd | 2103 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2104 | break; |
1da177e4 | 2105 | } |
c61b536c CS |
2106 | } |
2107 | ||
2108 | static void zfcp_fsf_fcp_cmnd_handler(struct zfcp_fsf_req *req) | |
2109 | { | |
2110 | struct scsi_cmnd *scpnt; | |
2111 | struct fcp_resp_with_ext *fcp_rsp; | |
2112 | unsigned long flags; | |
2113 | ||
c61b536c CS |
2114 | read_lock_irqsave(&req->adapter->abort_lock, flags); |
2115 | ||
2116 | scpnt = req->data; | |
2117 | if (unlikely(!scpnt)) { | |
2118 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); | |
2119 | return; | |
c41f8cbd | 2120 | } |
c61b536c | 2121 | |
5bfb2c31 SS |
2122 | zfcp_fsf_fcp_handler_common(req); |
2123 | ||
c61b536c CS |
2124 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { |
2125 | set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED); | |
2126 | goto skip_fsfstatus; | |
2127 | } | |
2128 | ||
2129 | switch (req->qtcb->header.fsf_status) { | |
2130 | case FSF_INCONSISTENT_PROT_DATA: | |
2131 | case FSF_INVALID_PROT_PARM: | |
2132 | set_host_byte(scpnt, DID_ERROR); | |
2133 | goto skip_fsfstatus; | |
2134 | case FSF_BLOCK_GUARD_CHECK_FAILURE: | |
2135 | zfcp_scsi_dif_sense_error(scpnt, 0x1); | |
2136 | goto skip_fsfstatus; | |
2137 | case FSF_APP_TAG_CHECK_FAILURE: | |
2138 | zfcp_scsi_dif_sense_error(scpnt, 0x2); | |
2139 | goto skip_fsfstatus; | |
2140 | case FSF_REF_TAG_CHECK_FAILURE: | |
2141 | zfcp_scsi_dif_sense_error(scpnt, 0x3); | |
2142 | goto skip_fsfstatus; | |
2143 | } | |
2144 | fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp; | |
2145 | zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt); | |
2146 | ||
2147 | skip_fsfstatus: | |
2148 | zfcp_fsf_req_trace(req, scpnt); | |
250a1352 | 2149 | zfcp_dbf_scsi_result(scpnt, req); |
c61b536c CS |
2150 | |
2151 | scpnt->host_scribble = NULL; | |
2152 | (scpnt->scsi_done) (scpnt); | |
2153 | /* | |
2154 | * We must hold this lock until scsi_done has been called. | |
2155 | * Otherwise we may call scsi_done after abort regarding this | |
2156 | * command has completed. | |
2157 | * Note: scsi_done must not block! | |
2158 | */ | |
2159 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); | |
1da177e4 LT |
2160 | } |
2161 | ||
ef3eb71d FB |
2162 | static int zfcp_fsf_set_data_dir(struct scsi_cmnd *scsi_cmnd, u32 *data_dir) |
2163 | { | |
2164 | switch (scsi_get_prot_op(scsi_cmnd)) { | |
2165 | case SCSI_PROT_NORMAL: | |
2166 | switch (scsi_cmnd->sc_data_direction) { | |
2167 | case DMA_NONE: | |
2168 | *data_dir = FSF_DATADIR_CMND; | |
2169 | break; | |
2170 | case DMA_FROM_DEVICE: | |
2171 | *data_dir = FSF_DATADIR_READ; | |
2172 | break; | |
2173 | case DMA_TO_DEVICE: | |
2174 | *data_dir = FSF_DATADIR_WRITE; | |
2175 | break; | |
2176 | case DMA_BIDIRECTIONAL: | |
2177 | return -EINVAL; | |
2178 | } | |
2179 | break; | |
2180 | ||
2181 | case SCSI_PROT_READ_STRIP: | |
2182 | *data_dir = FSF_DATADIR_DIF_READ_STRIP; | |
2183 | break; | |
2184 | case SCSI_PROT_WRITE_INSERT: | |
2185 | *data_dir = FSF_DATADIR_DIF_WRITE_INSERT; | |
2186 | break; | |
2187 | case SCSI_PROT_READ_PASS: | |
2188 | *data_dir = FSF_DATADIR_DIF_READ_CONVERT; | |
2189 | break; | |
2190 | case SCSI_PROT_WRITE_PASS: | |
2191 | *data_dir = FSF_DATADIR_DIF_WRITE_CONVERT; | |
2192 | break; | |
2193 | default: | |
2194 | return -EINVAL; | |
2195 | } | |
2196 | ||
2197 | return 0; | |
2198 | } | |
2199 | ||
c41f8cbd | 2200 | /** |
b62a8d9b | 2201 | * zfcp_fsf_fcp_cmnd - initiate an FCP command (for a SCSI command) |
c41f8cbd | 2202 | * @scsi_cmnd: scsi command to be sent |
1da177e4 | 2203 | */ |
b62a8d9b | 2204 | int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd) |
1da177e4 | 2205 | { |
c41f8cbd | 2206 | struct zfcp_fsf_req *req; |
4318e08c | 2207 | struct fcp_cmnd *fcp_cmnd; |
3ec90878 | 2208 | u8 sbtype = SBAL_SFLAGS0_TYPE_READ; |
86a9668a | 2209 | int retval = -EIO; |
b62a8d9b CS |
2210 | struct scsi_device *sdev = scsi_cmnd->device; |
2211 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); | |
2212 | struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; | |
564e1c86 | 2213 | struct zfcp_qdio *qdio = adapter->qdio; |
ef3eb71d | 2214 | struct fsf_qtcb_bottom_io *io; |
e55f8753 | 2215 | unsigned long flags; |
1da177e4 | 2216 | |
b62a8d9b | 2217 | if (unlikely(!(atomic_read(&zfcp_sdev->status) & |
c41f8cbd SS |
2218 | ZFCP_STATUS_COMMON_UNBLOCKED))) |
2219 | return -EBUSY; | |
1da177e4 | 2220 | |
e55f8753 | 2221 | spin_lock_irqsave(&qdio->req_q_lock, flags); |
706eca49 | 2222 | if (atomic_read(&qdio->req_q_free) <= 0) { |
564e1c86 | 2223 | atomic_inc(&qdio->req_q_full); |
c41f8cbd | 2224 | goto out; |
8fdf30d5 | 2225 | } |
09a46c6e | 2226 | |
1674b405 | 2227 | if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE) |
3ec90878 | 2228 | sbtype = SBAL_SFLAGS0_TYPE_WRITE; |
1674b405 | 2229 | |
564e1c86 | 2230 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND, |
1674b405 | 2231 | sbtype, adapter->pool.scsi_req); |
09a46c6e | 2232 | |
025270f0 | 2233 | if (IS_ERR(req)) { |
c41f8cbd SS |
2234 | retval = PTR_ERR(req); |
2235 | goto out; | |
2236 | } | |
2237 | ||
ef3eb71d FB |
2238 | scsi_cmnd->host_scribble = (unsigned char *) req->req_id; |
2239 | ||
2240 | io = &req->qtcb->bottom.io; | |
09a46c6e | 2241 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
c41f8cbd | 2242 | req->data = scsi_cmnd; |
c61b536c | 2243 | req->handler = zfcp_fsf_fcp_cmnd_handler; |
b62a8d9b CS |
2244 | req->qtcb->header.lun_handle = zfcp_sdev->lun_handle; |
2245 | req->qtcb->header.port_handle = zfcp_sdev->port->handle; | |
ef3eb71d FB |
2246 | io->service_class = FSF_CLASS_3; |
2247 | io->fcp_cmnd_length = FCP_CMND_LEN; | |
c41f8cbd | 2248 | |
ef3eb71d FB |
2249 | if (scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) { |
2250 | io->data_block_length = scsi_cmnd->device->sector_size; | |
2251 | io->ref_tag_value = scsi_get_lba(scsi_cmnd) & 0xFFFFFFFF; | |
1da177e4 LT |
2252 | } |
2253 | ||
cc405ace SM |
2254 | if (zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction)) |
2255 | goto failed_scsi_cmnd; | |
ef3eb71d | 2256 | |
4318e08c | 2257 | fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd; |
2443c8b2 | 2258 | zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd, 0); |
1da177e4 | 2259 | |
71b8e45d SM |
2260 | if ((scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) && |
2261 | scsi_prot_sg_count(scsi_cmnd)) { | |
ef3eb71d FB |
2262 | zfcp_qdio_set_data_div(qdio, &req->qdio_req, |
2263 | scsi_prot_sg_count(scsi_cmnd)); | |
86a9668a SS |
2264 | retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, |
2265 | scsi_prot_sglist(scsi_cmnd)); | |
2266 | if (retval) | |
2267 | goto failed_scsi_cmnd; | |
2268 | io->prot_data_length = zfcp_qdio_real_bytes( | |
ef3eb71d | 2269 | scsi_prot_sglist(scsi_cmnd)); |
ef3eb71d FB |
2270 | } |
2271 | ||
86a9668a SS |
2272 | retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, |
2273 | scsi_sglist(scsi_cmnd)); | |
2274 | if (unlikely(retval)) | |
c41f8cbd | 2275 | goto failed_scsi_cmnd; |
1da177e4 | 2276 | |
ef3eb71d | 2277 | zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req); |
86a9668a SS |
2278 | if (zfcp_adapter_multi_buffer_active(adapter)) |
2279 | zfcp_qdio_set_scount(qdio, &req->qdio_req); | |
ef3eb71d | 2280 | |
c41f8cbd SS |
2281 | retval = zfcp_fsf_req_send(req); |
2282 | if (unlikely(retval)) | |
2283 | goto failed_scsi_cmnd; | |
1da177e4 | 2284 | |
c41f8cbd | 2285 | goto out; |
1da177e4 | 2286 | |
c41f8cbd | 2287 | failed_scsi_cmnd: |
c41f8cbd SS |
2288 | zfcp_fsf_req_free(req); |
2289 | scsi_cmnd->host_scribble = NULL; | |
2290 | out: | |
e55f8753 | 2291 | spin_unlock_irqrestore(&qdio->req_q_lock, flags); |
c41f8cbd | 2292 | return retval; |
1da177e4 LT |
2293 | } |
2294 | ||
c61b536c CS |
2295 | static void zfcp_fsf_fcp_task_mgmt_handler(struct zfcp_fsf_req *req) |
2296 | { | |
2297 | struct fcp_resp_with_ext *fcp_rsp; | |
2298 | struct fcp_resp_rsp_info *rsp_info; | |
2299 | ||
2300 | zfcp_fsf_fcp_handler_common(req); | |
2301 | ||
2302 | fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp; | |
2303 | rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1]; | |
2304 | ||
2305 | if ((rsp_info->rsp_code != FCP_TMF_CMPL) || | |
2306 | (req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
2307 | req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
2308 | } | |
2309 | ||
1da177e4 | 2310 | /** |
b62a8d9b CS |
2311 | * zfcp_fsf_fcp_task_mgmt - send SCSI task management command |
2312 | * @scmnd: SCSI command to send the task management command for | |
c41f8cbd | 2313 | * @tm_flags: unsigned byte for task management flags |
c41f8cbd | 2314 | * Returns: on success pointer to struct fsf_req, NULL otherwise |
1da177e4 | 2315 | */ |
b62a8d9b CS |
2316 | struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_cmnd *scmnd, |
2317 | u8 tm_flags) | |
1da177e4 | 2318 | { |
c41f8cbd | 2319 | struct zfcp_fsf_req *req = NULL; |
4318e08c | 2320 | struct fcp_cmnd *fcp_cmnd; |
b62a8d9b CS |
2321 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scmnd->device); |
2322 | struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio; | |
1da177e4 | 2323 | |
b62a8d9b | 2324 | if (unlikely(!(atomic_read(&zfcp_sdev->status) & |
c41f8cbd SS |
2325 | ZFCP_STATUS_COMMON_UNBLOCKED))) |
2326 | return NULL; | |
1da177e4 | 2327 | |
44a24cb3 | 2328 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 2329 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 2330 | goto out; |
09a46c6e | 2331 | |
564e1c86 | 2332 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND, |
3ec90878 | 2333 | SBAL_SFLAGS0_TYPE_WRITE, |
564e1c86 | 2334 | qdio->adapter->pool.scsi_req); |
09a46c6e | 2335 | |
633528c3 SS |
2336 | if (IS_ERR(req)) { |
2337 | req = NULL; | |
c41f8cbd | 2338 | goto out; |
633528c3 | 2339 | } |
1da177e4 | 2340 | |
b62a8d9b | 2341 | req->data = scmnd; |
c61b536c | 2342 | req->handler = zfcp_fsf_fcp_task_mgmt_handler; |
b62a8d9b CS |
2343 | req->qtcb->header.lun_handle = zfcp_sdev->lun_handle; |
2344 | req->qtcb->header.port_handle = zfcp_sdev->port->handle; | |
c41f8cbd SS |
2345 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; |
2346 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
4318e08c | 2347 | req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN; |
c41f8cbd | 2348 | |
1674b405 | 2349 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 2350 | |
4318e08c | 2351 | fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd; |
2443c8b2 | 2352 | zfcp_fc_scsi_to_fcp(fcp_cmnd, scmnd, tm_flags); |
1da177e4 | 2353 | |
c41f8cbd SS |
2354 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); |
2355 | if (!zfcp_fsf_req_send(req)) | |
2356 | goto out; | |
1da177e4 | 2357 | |
c41f8cbd SS |
2358 | zfcp_fsf_req_free(req); |
2359 | req = NULL; | |
2360 | out: | |
44a24cb3 | 2361 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd SS |
2362 | return req; |
2363 | } | |
1da177e4 | 2364 | |
bd63eaf4 SS |
2365 | /** |
2366 | * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO | |
2367 | * @adapter: pointer to struct zfcp_adapter | |
2368 | * @sbal_idx: response queue index of SBAL to be processed | |
2369 | */ | |
564e1c86 | 2370 | void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx) |
bd63eaf4 | 2371 | { |
564e1c86 | 2372 | struct zfcp_adapter *adapter = qdio->adapter; |
706eca49 | 2373 | struct qdio_buffer *sbal = qdio->res_q[sbal_idx]; |
bd63eaf4 SS |
2374 | struct qdio_buffer_element *sbale; |
2375 | struct zfcp_fsf_req *fsf_req; | |
b6bd2fb9 | 2376 | unsigned long req_id; |
bd63eaf4 SS |
2377 | int idx; |
2378 | ||
2379 | for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) { | |
2380 | ||
2381 | sbale = &sbal->element[idx]; | |
2382 | req_id = (unsigned long) sbale->addr; | |
b6bd2fb9 | 2383 | fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id); |
bd63eaf4 | 2384 | |
339f4f4e | 2385 | if (!fsf_req) { |
bd63eaf4 SS |
2386 | /* |
2387 | * Unknown request means that we have potentially memory | |
2388 | * corruption and must stop the machine immediately. | |
2389 | */ | |
339f4f4e | 2390 | zfcp_qdio_siosl(adapter); |
bd63eaf4 SS |
2391 | panic("error: unknown req_id (%lx) on adapter %s.\n", |
2392 | req_id, dev_name(&adapter->ccw_device->dev)); | |
339f4f4e | 2393 | } |
bd63eaf4 | 2394 | |
34c2b712 | 2395 | fsf_req->qdio_req.sbal_response = sbal_idx; |
bd63eaf4 SS |
2396 | zfcp_fsf_req_complete(fsf_req); |
2397 | ||
3ec90878 | 2398 | if (likely(sbale->eflags & SBAL_EFLAGS_LAST_ENTRY)) |
bd63eaf4 SS |
2399 | break; |
2400 | } | |
2401 | } |