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Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
553448f6 | 3 | * zfcp device driver |
1da177e4 | 4 | * |
553448f6 | 5 | * Implementation of FSF commands. |
1da177e4 | 6 | * |
394134fd | 7 | * Copyright IBM Corp. 2002, 2017 |
1da177e4 LT |
8 | */ |
9 | ||
ecf39d42 CS |
10 | #define KMSG_COMPONENT "zfcp" |
11 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt | |
12 | ||
0997f1c5 | 13 | #include <linux/blktrace_api.h> |
5a0e3ad6 | 14 | #include <linux/slab.h> |
9d05ce2c | 15 | #include <scsi/fc/fc_els.h> |
1da177e4 | 16 | #include "zfcp_ext.h" |
4318e08c | 17 | #include "zfcp_fc.h" |
dcd20e23 | 18 | #include "zfcp_dbf.h" |
34c2b712 | 19 | #include "zfcp_qdio.h" |
b6bd2fb9 | 20 | #include "zfcp_reqlist.h" |
1da177e4 | 21 | |
259afe2e CS |
22 | struct kmem_cache *zfcp_fsf_qtcb_cache; |
23 | ||
75492a51 | 24 | static void zfcp_fsf_request_timeout_handler(struct timer_list *t) |
287ac01a | 25 | { |
75492a51 KC |
26 | struct zfcp_fsf_req *fsf_req = from_timer(fsf_req, t, timer); |
27 | struct zfcp_adapter *adapter = fsf_req->adapter; | |
5c13db9b | 28 | |
339f4f4e | 29 | zfcp_qdio_siosl(adapter); |
5ffd51a5 | 30 | zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, |
ea4a3a6a | 31 | "fsrth_1"); |
287ac01a CS |
32 | } |
33 | ||
34 | static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req, | |
35 | unsigned long timeout) | |
36 | { | |
841b86f3 | 37 | fsf_req->timer.function = zfcp_fsf_request_timeout_handler; |
287ac01a CS |
38 | fsf_req->timer.expires = jiffies + timeout; |
39 | add_timer(&fsf_req->timer); | |
40 | } | |
41 | ||
42 | static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req) | |
43 | { | |
44 | BUG_ON(!fsf_req->erp_action); | |
841b86f3 | 45 | fsf_req->timer.function = zfcp_erp_timeout_handler; |
287ac01a CS |
46 | fsf_req->timer.expires = jiffies + 30 * HZ; |
47 | add_timer(&fsf_req->timer); | |
48 | } | |
49 | ||
1da177e4 LT |
50 | /* association between FSF command and FSF QTCB type */ |
51 | static u32 fsf_qtcb_type[] = { | |
52 | [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND, | |
53 | [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND, | |
54 | [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND, | |
55 | [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND, | |
56 | [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND, | |
57 | [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND, | |
58 | [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND, | |
59 | [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND, | |
60 | [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND, | |
61 | [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND, | |
62 | [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND, | |
63 | [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND, | |
64 | [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND | |
65 | }; | |
66 | ||
553448f6 CS |
67 | static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req) |
68 | { | |
ff3b24fa CS |
69 | dev_err(&req->adapter->ccw_device->dev, "FCP device not " |
70 | "operational because of an unsupported FC class\n"); | |
ea4a3a6a | 71 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fscns_1"); |
553448f6 CS |
72 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
73 | } | |
74 | ||
c41f8cbd SS |
75 | /** |
76 | * zfcp_fsf_req_free - free memory used by fsf request | |
77 | * @fsf_req: pointer to struct zfcp_fsf_req | |
1da177e4 | 78 | */ |
c41f8cbd | 79 | void zfcp_fsf_req_free(struct zfcp_fsf_req *req) |
1da177e4 | 80 | { |
c41f8cbd | 81 | if (likely(req->pool)) { |
a4623c46 SS |
82 | if (likely(req->qtcb)) |
83 | mempool_free(req->qtcb, req->adapter->pool.qtcb_pool); | |
c41f8cbd | 84 | mempool_free(req, req->pool); |
dd52e0ea HC |
85 | return; |
86 | } | |
87 | ||
a4623c46 | 88 | if (likely(req->qtcb)) |
259afe2e | 89 | kmem_cache_free(zfcp_fsf_qtcb_cache, req->qtcb); |
a4623c46 | 90 | kfree(req); |
1da177e4 LT |
91 | } |
92 | ||
c41f8cbd | 93 | static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req) |
1da177e4 | 94 | { |
ecf0c772 | 95 | unsigned long flags; |
c41f8cbd SS |
96 | struct fsf_status_read_buffer *sr_buf = req->data; |
97 | struct zfcp_adapter *adapter = req->adapter; | |
98 | struct zfcp_port *port; | |
800c0cad | 99 | int d_id = ntoh24(sr_buf->d_id); |
1da177e4 | 100 | |
ecf0c772 SS |
101 | read_lock_irqsave(&adapter->port_list_lock, flags); |
102 | list_for_each_entry(port, &adapter->port_list, list) | |
c41f8cbd | 103 | if (port->d_id == d_id) { |
ea4a3a6a | 104 | zfcp_erp_port_reopen(port, 0, "fssrpc1"); |
ecf0c772 | 105 | break; |
c41f8cbd | 106 | } |
ecf0c772 | 107 | read_unlock_irqrestore(&adapter->port_list_lock, flags); |
1da177e4 LT |
108 | } |
109 | ||
edaed859 | 110 | static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, |
c41f8cbd | 111 | struct fsf_link_down_info *link_down) |
aef4a983 | 112 | { |
c41f8cbd | 113 | struct zfcp_adapter *adapter = req->adapter; |
698ec016 | 114 | |
c41f8cbd | 115 | if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED) |
ee69ab7a MS |
116 | return; |
117 | ||
805de8f4 | 118 | atomic_or(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status); |
70932935 | 119 | |
a2fa0aed | 120 | zfcp_scsi_schedule_rports_block(adapter); |
ee69ab7a | 121 | |
c41f8cbd | 122 | if (!link_down) |
2f8f3ed5 | 123 | goto out; |
ee69ab7a | 124 | |
aef4a983 MS |
125 | switch (link_down->error_code) { |
126 | case FSF_PSQ_LINK_NO_LIGHT: | |
c41f8cbd | 127 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
128 | "There is no light signal from the local " |
129 | "fibre channel cable\n"); | |
aef4a983 MS |
130 | break; |
131 | case FSF_PSQ_LINK_WRAP_PLUG: | |
c41f8cbd | 132 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
133 | "There is a wrap plug instead of a fibre " |
134 | "channel cable\n"); | |
aef4a983 MS |
135 | break; |
136 | case FSF_PSQ_LINK_NO_FCP: | |
c41f8cbd | 137 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
138 | "The adjacent fibre channel node does not " |
139 | "support FCP\n"); | |
aef4a983 MS |
140 | break; |
141 | case FSF_PSQ_LINK_FIRMWARE_UPDATE: | |
c41f8cbd | 142 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
143 | "The FCP device is suspended because of a " |
144 | "firmware update\n"); | |
553448f6 | 145 | break; |
aef4a983 | 146 | case FSF_PSQ_LINK_INVALID_WWPN: |
c41f8cbd | 147 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
148 | "The FCP device detected a WWPN that is " |
149 | "duplicate or not valid\n"); | |
aef4a983 MS |
150 | break; |
151 | case FSF_PSQ_LINK_NO_NPIV_SUPPORT: | |
c41f8cbd | 152 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 153 | "The fibre channel fabric does not support NPIV\n"); |
aef4a983 MS |
154 | break; |
155 | case FSF_PSQ_LINK_NO_FCP_RESOURCES: | |
c41f8cbd | 156 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 157 | "The FCP adapter cannot support more NPIV ports\n"); |
aef4a983 MS |
158 | break; |
159 | case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: | |
c41f8cbd | 160 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
161 | "The adjacent switch cannot support " |
162 | "more NPIV ports\n"); | |
aef4a983 MS |
163 | break; |
164 | case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: | |
c41f8cbd | 165 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
166 | "The FCP adapter could not log in to the " |
167 | "fibre channel fabric\n"); | |
aef4a983 MS |
168 | break; |
169 | case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: | |
c41f8cbd | 170 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
171 | "The WWPN assignment file on the FCP adapter " |
172 | "has been damaged\n"); | |
aef4a983 MS |
173 | break; |
174 | case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: | |
c41f8cbd | 175 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
176 | "The mode table on the FCP adapter " |
177 | "has been damaged\n"); | |
aef4a983 MS |
178 | break; |
179 | case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: | |
c41f8cbd | 180 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
181 | "All NPIV ports on the FCP adapter have " |
182 | "been assigned\n"); | |
aef4a983 MS |
183 | break; |
184 | default: | |
c41f8cbd | 185 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa CS |
186 | "The link between the FCP adapter and " |
187 | "the FC fabric is down\n"); | |
aef4a983 | 188 | } |
c41f8cbd | 189 | out: |
edaed859 | 190 | zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_ERP_FAILED); |
aef4a983 MS |
191 | } |
192 | ||
c41f8cbd | 193 | static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req) |
1da177e4 | 194 | { |
c41f8cbd SS |
195 | struct fsf_status_read_buffer *sr_buf = req->data; |
196 | struct fsf_link_down_info *ldi = | |
197 | (struct fsf_link_down_info *) &sr_buf->payload; | |
1da177e4 | 198 | |
c41f8cbd SS |
199 | switch (sr_buf->status_subtype) { |
200 | case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: | |
c41f8cbd | 201 | case FSF_STATUS_READ_SUB_FDISC_FAILED: |
edaed859 | 202 | zfcp_fsf_link_down_info_eval(req, ldi); |
1da177e4 | 203 | break; |
c41f8cbd | 204 | case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE: |
edaed859 | 205 | zfcp_fsf_link_down_info_eval(req, NULL); |
3b974874 | 206 | } |
c41f8cbd | 207 | } |
1da177e4 | 208 | |
c41f8cbd SS |
209 | static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) |
210 | { | |
211 | struct zfcp_adapter *adapter = req->adapter; | |
212 | struct fsf_status_read_buffer *sr_buf = req->data; | |
1da177e4 | 213 | |
c41f8cbd | 214 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
a54ca0f6 | 215 | zfcp_dbf_hba_fsf_uss("fssrh_1", req); |
c7b279ae | 216 | mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data); |
c41f8cbd SS |
217 | zfcp_fsf_req_free(req); |
218 | return; | |
219 | } | |
1da177e4 | 220 | |
0100998d | 221 | zfcp_dbf_hba_fsf_uss("fssrh_4", req); |
1da177e4 | 222 | |
c41f8cbd SS |
223 | switch (sr_buf->status_type) { |
224 | case FSF_STATUS_READ_PORT_CLOSED: | |
225 | zfcp_fsf_status_read_port_closed(req); | |
1da177e4 | 226 | break; |
c41f8cbd SS |
227 | case FSF_STATUS_READ_INCOMING_ELS: |
228 | zfcp_fc_incoming_els(req); | |
1da177e4 | 229 | break; |
c41f8cbd | 230 | case FSF_STATUS_READ_SENSE_DATA_AVAIL: |
1da177e4 | 231 | break; |
c41f8cbd | 232 | case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: |
ff3b24fa CS |
233 | dev_warn(&adapter->ccw_device->dev, |
234 | "The error threshold for checksum statistics " | |
235 | "has been exceeded\n"); | |
a54ca0f6 | 236 | zfcp_dbf_hba_bit_err("fssrh_3", req); |
1da177e4 | 237 | break; |
c41f8cbd SS |
238 | case FSF_STATUS_READ_LINK_DOWN: |
239 | zfcp_fsf_status_read_link_down(req); | |
2d1e547f | 240 | zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKDOWN, 0); |
c41f8cbd SS |
241 | break; |
242 | case FSF_STATUS_READ_LINK_UP: | |
243 | dev_info(&adapter->ccw_device->dev, | |
ff3b24fa | 244 | "The local link has been restored\n"); |
c41f8cbd | 245 | /* All ports should be marked as ready to run again */ |
edaed859 SS |
246 | zfcp_erp_set_adapter_status(adapter, |
247 | ZFCP_STATUS_COMMON_RUNNING); | |
c41f8cbd SS |
248 | zfcp_erp_adapter_reopen(adapter, |
249 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
250 | ZFCP_STATUS_COMMON_ERP_FAILED, | |
ea4a3a6a | 251 | "fssrh_2"); |
2d1e547f SS |
252 | zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKUP, 0); |
253 | ||
c41f8cbd SS |
254 | break; |
255 | case FSF_STATUS_READ_NOTIFICATION_LOST: | |
c41f8cbd | 256 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS) |
43f60cbd | 257 | zfcp_fc_conditional_port_scan(adapter); |
c41f8cbd | 258 | break; |
c41f8cbd SS |
259 | case FSF_STATUS_READ_FEATURE_UPDATE_ALERT: |
260 | adapter->adapter_features = sr_buf->payload.word[0]; | |
1da177e4 | 261 | break; |
1da177e4 LT |
262 | } |
263 | ||
c7b279ae | 264 | mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data); |
c41f8cbd | 265 | zfcp_fsf_req_free(req); |
1da177e4 | 266 | |
c41f8cbd | 267 | atomic_inc(&adapter->stat_miss); |
4544683a | 268 | queue_work(adapter->work_queue, &adapter->stat_work); |
c41f8cbd | 269 | } |
1da177e4 | 270 | |
c41f8cbd SS |
271 | static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req) |
272 | { | |
273 | switch (req->qtcb->header.fsf_status_qual.word[0]) { | |
274 | case FSF_SQ_FCP_RSP_AVAILABLE: | |
275 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
276 | case FSF_SQ_NO_RETRY_POSSIBLE: | |
277 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: | |
278 | return; | |
279 | case FSF_SQ_COMMAND_ABORTED: | |
c41f8cbd SS |
280 | break; |
281 | case FSF_SQ_NO_RECOM: | |
282 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa CS |
283 | "The FCP adapter reported a problem " |
284 | "that cannot be recovered\n"); | |
339f4f4e | 285 | zfcp_qdio_siosl(req->adapter); |
ea4a3a6a | 286 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1"); |
c41f8cbd SS |
287 | break; |
288 | } | |
289 | /* all non-return stats set FSFREQ_ERROR*/ | |
290 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
291 | } |
292 | ||
c41f8cbd | 293 | static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req) |
1da177e4 | 294 | { |
c41f8cbd SS |
295 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
296 | return; | |
1da177e4 | 297 | |
c41f8cbd SS |
298 | switch (req->qtcb->header.fsf_status) { |
299 | case FSF_UNKNOWN_COMMAND: | |
300 | dev_err(&req->adapter->ccw_device->dev, | |
ff3b24fa | 301 | "The FCP adapter does not recognize the command 0x%x\n", |
c41f8cbd | 302 | req->qtcb->header.fsf_command); |
ea4a3a6a | 303 | zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1"); |
c41f8cbd SS |
304 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
305 | break; | |
306 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
307 | zfcp_fsf_fsfstatus_qual_eval(req); | |
308 | break; | |
309 | } | |
310 | } | |
1da177e4 | 311 | |
c41f8cbd SS |
312 | static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) |
313 | { | |
314 | struct zfcp_adapter *adapter = req->adapter; | |
315 | struct fsf_qtcb *qtcb = req->qtcb; | |
316 | union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual; | |
1da177e4 | 317 | |
5771710b | 318 | zfcp_dbf_hba_fsf_response(req); |
1da177e4 | 319 | |
c41f8cbd | 320 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
4c571c65 | 321 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
322 | return; |
323 | } | |
1da177e4 | 324 | |
c41f8cbd SS |
325 | switch (qtcb->prefix.prot_status) { |
326 | case FSF_PROT_GOOD: | |
327 | case FSF_PROT_FSF_STATUS_PRESENTED: | |
328 | return; | |
329 | case FSF_PROT_QTCB_VERSION_ERROR: | |
330 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
331 | "QTCB version 0x%x not supported by FCP adapter " |
332 | "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION, | |
333 | psq->word[0], psq->word[1]); | |
ea4a3a6a | 334 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1"); |
c41f8cbd SS |
335 | break; |
336 | case FSF_PROT_ERROR_STATE: | |
337 | case FSF_PROT_SEQ_NUMB_ERROR: | |
ea4a3a6a | 338 | zfcp_erp_adapter_reopen(adapter, 0, "fspse_2"); |
4c571c65 | 339 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
340 | break; |
341 | case FSF_PROT_UNSUPP_QTCB_TYPE: | |
342 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 343 | "The QTCB type is not supported by the FCP adapter\n"); |
ea4a3a6a | 344 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3"); |
c41f8cbd SS |
345 | break; |
346 | case FSF_PROT_HOST_CONNECTION_INITIALIZING: | |
805de8f4 | 347 | atomic_or(ZFCP_STATUS_ADAPTER_HOST_CON_INIT, |
c41f8cbd SS |
348 | &adapter->status); |
349 | break; | |
350 | case FSF_PROT_DUPLICATE_REQUEST_ID: | |
351 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 352 | "0x%Lx is an ambiguous request identifier\n", |
c41f8cbd | 353 | (unsigned long long)qtcb->bottom.support.req_handle); |
ea4a3a6a | 354 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_4"); |
c41f8cbd SS |
355 | break; |
356 | case FSF_PROT_LINK_DOWN: | |
edaed859 | 357 | zfcp_fsf_link_down_info_eval(req, &psq->link_down_info); |
452b505c | 358 | /* go through reopen to flush pending requests */ |
ea4a3a6a | 359 | zfcp_erp_adapter_reopen(adapter, 0, "fspse_6"); |
c41f8cbd SS |
360 | break; |
361 | case FSF_PROT_REEST_QUEUE: | |
362 | /* All ports should be marked as ready to run again */ | |
edaed859 SS |
363 | zfcp_erp_set_adapter_status(adapter, |
364 | ZFCP_STATUS_COMMON_RUNNING); | |
c41f8cbd SS |
365 | zfcp_erp_adapter_reopen(adapter, |
366 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | | |
5ffd51a5 | 367 | ZFCP_STATUS_COMMON_ERP_FAILED, |
ea4a3a6a | 368 | "fspse_8"); |
c41f8cbd SS |
369 | break; |
370 | default: | |
371 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa | 372 | "0x%x is not a valid transfer protocol status\n", |
c41f8cbd | 373 | qtcb->prefix.prot_status); |
339f4f4e | 374 | zfcp_qdio_siosl(adapter); |
ea4a3a6a | 375 | zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9"); |
c41f8cbd SS |
376 | } |
377 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 LT |
378 | } |
379 | ||
c41f8cbd SS |
380 | /** |
381 | * zfcp_fsf_req_complete - process completion of a FSF request | |
382 | * @fsf_req: The FSF request that has been completed. | |
383 | * | |
384 | * When a request has been completed either from the FCP adapter, | |
385 | * or it has been dismissed due to a queue shutdown, this function | |
386 | * is called to process the completion status and trigger further | |
387 | * events related to the FSF request. | |
388 | */ | |
bd63eaf4 | 389 | static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req) |
1da177e4 | 390 | { |
c41f8cbd SS |
391 | if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) { |
392 | zfcp_fsf_status_read_handler(req); | |
393 | return; | |
394 | } | |
1da177e4 | 395 | |
c41f8cbd SS |
396 | del_timer(&req->timer); |
397 | zfcp_fsf_protstatus_eval(req); | |
398 | zfcp_fsf_fsfstatus_eval(req); | |
399 | req->handler(req); | |
1da177e4 | 400 | |
c41f8cbd | 401 | if (req->erp_action) |
287ac01a | 402 | zfcp_erp_notify(req->erp_action, 0); |
1da177e4 | 403 | |
c41f8cbd SS |
404 | if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP)) |
405 | zfcp_fsf_req_free(req); | |
406 | else | |
058b8647 | 407 | complete(&req->completion); |
c41f8cbd | 408 | } |
1da177e4 | 409 | |
bd63eaf4 SS |
410 | /** |
411 | * zfcp_fsf_req_dismiss_all - dismiss all fsf requests | |
412 | * @adapter: pointer to struct zfcp_adapter | |
413 | * | |
414 | * Never ever call this without shutting down the adapter first. | |
415 | * Otherwise the adapter would continue using and corrupting s390 storage. | |
416 | * Included BUG_ON() call to ensure this is done. | |
417 | * ERP is supposed to be the only user of this function. | |
418 | */ | |
419 | void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter) | |
420 | { | |
421 | struct zfcp_fsf_req *req, *tmp; | |
bd63eaf4 | 422 | LIST_HEAD(remove_queue); |
bd63eaf4 SS |
423 | |
424 | BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP); | |
b6bd2fb9 | 425 | zfcp_reqlist_move(adapter->req_list, &remove_queue); |
bd63eaf4 SS |
426 | |
427 | list_for_each_entry_safe(req, tmp, &remove_queue, list) { | |
428 | list_del(&req->list); | |
429 | req->status |= ZFCP_STATUS_FSFREQ_DISMISSED; | |
430 | zfcp_fsf_req_complete(req); | |
431 | } | |
432 | } | |
433 | ||
d2201977 SM |
434 | #define ZFCP_FSF_PORTSPEED_1GBIT (1 << 0) |
435 | #define ZFCP_FSF_PORTSPEED_2GBIT (1 << 1) | |
436 | #define ZFCP_FSF_PORTSPEED_4GBIT (1 << 2) | |
437 | #define ZFCP_FSF_PORTSPEED_10GBIT (1 << 3) | |
438 | #define ZFCP_FSF_PORTSPEED_8GBIT (1 << 4) | |
439 | #define ZFCP_FSF_PORTSPEED_16GBIT (1 << 5) | |
440 | #define ZFCP_FSF_PORTSPEED_NOT_NEGOTIATED (1 << 15) | |
441 | ||
442 | static u32 zfcp_fsf_convert_portspeed(u32 fsf_speed) | |
443 | { | |
444 | u32 fdmi_speed = 0; | |
445 | if (fsf_speed & ZFCP_FSF_PORTSPEED_1GBIT) | |
446 | fdmi_speed |= FC_PORTSPEED_1GBIT; | |
447 | if (fsf_speed & ZFCP_FSF_PORTSPEED_2GBIT) | |
448 | fdmi_speed |= FC_PORTSPEED_2GBIT; | |
449 | if (fsf_speed & ZFCP_FSF_PORTSPEED_4GBIT) | |
450 | fdmi_speed |= FC_PORTSPEED_4GBIT; | |
451 | if (fsf_speed & ZFCP_FSF_PORTSPEED_10GBIT) | |
452 | fdmi_speed |= FC_PORTSPEED_10GBIT; | |
453 | if (fsf_speed & ZFCP_FSF_PORTSPEED_8GBIT) | |
454 | fdmi_speed |= FC_PORTSPEED_8GBIT; | |
455 | if (fsf_speed & ZFCP_FSF_PORTSPEED_16GBIT) | |
456 | fdmi_speed |= FC_PORTSPEED_16GBIT; | |
457 | if (fsf_speed & ZFCP_FSF_PORTSPEED_NOT_NEGOTIATED) | |
458 | fdmi_speed |= FC_PORTSPEED_NOT_NEGOTIATED; | |
459 | return fdmi_speed; | |
460 | } | |
461 | ||
c41f8cbd SS |
462 | static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req) |
463 | { | |
9d05ce2c | 464 | struct fsf_qtcb_bottom_config *bottom = &req->qtcb->bottom.config; |
c41f8cbd SS |
465 | struct zfcp_adapter *adapter = req->adapter; |
466 | struct Scsi_Host *shost = adapter->scsi_host; | |
9d05ce2c | 467 | struct fc_els_flogi *nsp, *plogi; |
1da177e4 | 468 | |
9d05ce2c CS |
469 | /* adjust pointers for missing command code */ |
470 | nsp = (struct fc_els_flogi *) ((u8 *)&bottom->nport_serv_param | |
471 | - sizeof(u32)); | |
472 | plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload | |
473 | - sizeof(u32)); | |
1da177e4 | 474 | |
c41f8cbd SS |
475 | if (req->data) |
476 | memcpy(req->data, bottom, sizeof(*bottom)); | |
477 | ||
9d464fc1 SM |
478 | fc_host_port_name(shost) = be64_to_cpu(nsp->fl_wwpn); |
479 | fc_host_node_name(shost) = be64_to_cpu(nsp->fl_wwnn); | |
c41f8cbd SS |
480 | fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3; |
481 | ||
faf4cd85 | 482 | adapter->timer_ticks = bottom->timer_interval & ZFCP_FSF_TIMER_INT_MASK; |
8d88cf3f CS |
483 | adapter->stat_read_buf_num = max(bottom->status_read_buf_num, |
484 | (u16)FSF_STATUS_READS_RECOM); | |
c41f8cbd SS |
485 | |
486 | if (fc_host_permanent_port_name(shost) == -1) | |
487 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); | |
488 | ||
9edf7d75 SM |
489 | zfcp_scsi_set_prot(adapter); |
490 | ||
491 | /* no error return above here, otherwise must fix call chains */ | |
492 | /* do not evaluate invalid fields */ | |
493 | if (req->qtcb->header.fsf_status == FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE) | |
494 | return 0; | |
495 | ||
496 | fc_host_port_id(shost) = ntoh24(bottom->s_id); | |
497 | fc_host_speed(shost) = | |
498 | zfcp_fsf_convert_portspeed(bottom->fc_link_speed); | |
499 | ||
500 | adapter->hydra_version = bottom->adapter_type; | |
501 | ||
c41f8cbd SS |
502 | switch (bottom->fc_topology) { |
503 | case FSF_TOPO_P2P: | |
800c0cad | 504 | adapter->peer_d_id = ntoh24(bottom->peer_d_id); |
9d464fc1 SM |
505 | adapter->peer_wwpn = be64_to_cpu(plogi->fl_wwpn); |
506 | adapter->peer_wwnn = be64_to_cpu(plogi->fl_wwnn); | |
c41f8cbd | 507 | fc_host_port_type(shost) = FC_PORTTYPE_PTP; |
c41f8cbd SS |
508 | break; |
509 | case FSF_TOPO_FABRIC: | |
bd77befa SM |
510 | if (bottom->connection_features & FSF_FEATURE_NPIV_MODE) |
511 | fc_host_port_type(shost) = FC_PORTTYPE_NPIV; | |
512 | else | |
513 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; | |
c41f8cbd SS |
514 | break; |
515 | case FSF_TOPO_AL: | |
516 | fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; | |
dceab655 | 517 | /* fall through */ |
c41f8cbd | 518 | default: |
c41f8cbd | 519 | dev_err(&adapter->ccw_device->dev, |
ff3b24fa CS |
520 | "Unknown or unsupported arbitrated loop " |
521 | "fibre channel topology detected\n"); | |
ea4a3a6a | 522 | zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1"); |
c41f8cbd | 523 | return -EIO; |
1da177e4 | 524 | } |
c41f8cbd | 525 | |
1da177e4 LT |
526 | return 0; |
527 | } | |
528 | ||
c41f8cbd | 529 | static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) |
553448f6 CS |
530 | { |
531 | struct zfcp_adapter *adapter = req->adapter; | |
c41f8cbd SS |
532 | struct fsf_qtcb *qtcb = req->qtcb; |
533 | struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config; | |
534 | struct Scsi_Host *shost = adapter->scsi_host; | |
553448f6 | 535 | |
c41f8cbd SS |
536 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
537 | return; | |
1da177e4 | 538 | |
c41f8cbd SS |
539 | adapter->fsf_lic_version = bottom->lic_version; |
540 | adapter->adapter_features = bottom->adapter_features; | |
541 | adapter->connection_features = bottom->connection_features; | |
542 | adapter->peer_wwpn = 0; | |
543 | adapter->peer_wwnn = 0; | |
544 | adapter->peer_d_id = 0; | |
8a36e453 | 545 | |
c41f8cbd SS |
546 | switch (qtcb->header.fsf_status) { |
547 | case FSF_GOOD: | |
548 | if (zfcp_fsf_exchange_config_evaluate(req)) | |
549 | return; | |
1da177e4 | 550 | |
c41f8cbd SS |
551 | if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { |
552 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
553 | "FCP adapter maximum QTCB size (%d bytes) " |
554 | "is too small\n", | |
555 | bottom->max_qtcb_size); | |
ea4a3a6a | 556 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1"); |
c41f8cbd SS |
557 | return; |
558 | } | |
805de8f4 | 559 | atomic_or(ZFCP_STATUS_ADAPTER_XCONFIG_OK, |
c41f8cbd | 560 | &adapter->status); |
1da177e4 | 561 | break; |
c41f8cbd SS |
562 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
563 | fc_host_node_name(shost) = 0; | |
564 | fc_host_port_name(shost) = 0; | |
565 | fc_host_port_id(shost) = 0; | |
566 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; | |
567 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; | |
568 | adapter->hydra_version = 0; | |
1da177e4 | 569 | |
f76ccaac DH |
570 | /* avoids adapter shutdown to be able to recognize |
571 | * events such as LINK UP */ | |
805de8f4 | 572 | atomic_or(ZFCP_STATUS_ADAPTER_XCONFIG_OK, |
f76ccaac | 573 | &adapter->status); |
edaed859 | 574 | zfcp_fsf_link_down_info_eval(req, |
c41f8cbd | 575 | &qtcb->header.fsf_status_qual.link_down_info); |
9edf7d75 SM |
576 | if (zfcp_fsf_exchange_config_evaluate(req)) |
577 | return; | |
1da177e4 | 578 | break; |
c41f8cbd | 579 | default: |
ea4a3a6a | 580 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3"); |
c41f8cbd SS |
581 | return; |
582 | } | |
1da177e4 | 583 | |
c41f8cbd SS |
584 | if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) { |
585 | adapter->hardware_version = bottom->hardware_version; | |
586 | memcpy(fc_host_serial_number(shost), bottom->serial_number, | |
587 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
588 | EBCASC(fc_host_serial_number(shost), | |
589 | min(FC_SERIAL_NUMBER_SIZE, 17)); | |
590 | } | |
1da177e4 | 591 | |
c41f8cbd SS |
592 | if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) { |
593 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
594 | "The FCP adapter only supports newer " |
595 | "control block versions\n"); | |
ea4a3a6a | 596 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4"); |
c41f8cbd SS |
597 | return; |
598 | } | |
599 | if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) { | |
600 | dev_err(&adapter->ccw_device->dev, | |
ff3b24fa CS |
601 | "The FCP adapter only supports older " |
602 | "control block versions\n"); | |
ea4a3a6a | 603 | zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5"); |
c41f8cbd SS |
604 | } |
605 | } | |
1da177e4 | 606 | |
c41f8cbd SS |
607 | static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req) |
608 | { | |
609 | struct zfcp_adapter *adapter = req->adapter; | |
610 | struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port; | |
611 | struct Scsi_Host *shost = adapter->scsi_host; | |
1da177e4 | 612 | |
c41f8cbd SS |
613 | if (req->data) |
614 | memcpy(req->data, bottom, sizeof(*bottom)); | |
9eb69aff | 615 | |
0282985d | 616 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) { |
c41f8cbd | 617 | fc_host_permanent_port_name(shost) = bottom->wwpn; |
0282985d | 618 | } else |
c41f8cbd SS |
619 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); |
620 | fc_host_maxframe_size(shost) = bottom->maximum_frame_size; | |
d2201977 SM |
621 | fc_host_supported_speeds(shost) = |
622 | zfcp_fsf_convert_portspeed(bottom->supported_speed); | |
2d8e62bb CS |
623 | memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types, |
624 | FC_FC4_LIST_SIZE); | |
625 | memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types, | |
626 | FC_FC4_LIST_SIZE); | |
c41f8cbd | 627 | } |
1da177e4 | 628 | |
c41f8cbd SS |
629 | static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) |
630 | { | |
c41f8cbd SS |
631 | struct fsf_qtcb *qtcb = req->qtcb; |
632 | ||
633 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
634 | return; | |
635 | ||
636 | switch (qtcb->header.fsf_status) { | |
637 | case FSF_GOOD: | |
638 | zfcp_fsf_exchange_port_evaluate(req); | |
c41f8cbd SS |
639 | break; |
640 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: | |
641 | zfcp_fsf_exchange_port_evaluate(req); | |
edaed859 | 642 | zfcp_fsf_link_down_info_eval(req, |
c41f8cbd | 643 | &qtcb->header.fsf_status_qual.link_down_info); |
aef4a983 | 644 | break; |
1da177e4 | 645 | } |
c41f8cbd | 646 | } |
d26ab06e | 647 | |
a4623c46 | 648 | static struct zfcp_fsf_req *zfcp_fsf_alloc(mempool_t *pool) |
c41f8cbd SS |
649 | { |
650 | struct zfcp_fsf_req *req; | |
a4623c46 SS |
651 | |
652 | if (likely(pool)) | |
653 | req = mempool_alloc(pool, GFP_ATOMIC); | |
654 | else | |
655 | req = kmalloc(sizeof(*req), GFP_ATOMIC); | |
656 | ||
657 | if (unlikely(!req)) | |
c41f8cbd | 658 | return NULL; |
a4623c46 | 659 | |
c41f8cbd | 660 | memset(req, 0, sizeof(*req)); |
88f2a977 | 661 | req->pool = pool; |
c41f8cbd SS |
662 | return req; |
663 | } | |
664 | ||
a4623c46 | 665 | static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool) |
c41f8cbd | 666 | { |
a4623c46 | 667 | struct fsf_qtcb *qtcb; |
c41f8cbd SS |
668 | |
669 | if (likely(pool)) | |
670 | qtcb = mempool_alloc(pool, GFP_ATOMIC); | |
671 | else | |
259afe2e | 672 | qtcb = kmem_cache_alloc(zfcp_fsf_qtcb_cache, GFP_ATOMIC); |
a4623c46 | 673 | |
c41f8cbd SS |
674 | if (unlikely(!qtcb)) |
675 | return NULL; | |
676 | ||
677 | memset(qtcb, 0, sizeof(*qtcb)); | |
a4623c46 | 678 | return qtcb; |
c41f8cbd SS |
679 | } |
680 | ||
564e1c86 | 681 | static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio, |
3ec90878 | 682 | u32 fsf_cmd, u8 sbtype, |
1674b405 | 683 | mempool_t *pool) |
1da177e4 | 684 | { |
564e1c86 | 685 | struct zfcp_adapter *adapter = qdio->adapter; |
a4623c46 | 686 | struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool); |
1da177e4 | 687 | |
c41f8cbd | 688 | if (unlikely(!req)) |
1e9b1643 | 689 | return ERR_PTR(-ENOMEM); |
1da177e4 | 690 | |
c41f8cbd SS |
691 | if (adapter->req_no == 0) |
692 | adapter->req_no++; | |
1da177e4 | 693 | |
c41f8cbd | 694 | INIT_LIST_HEAD(&req->list); |
75492a51 | 695 | timer_setup(&req->timer, NULL, 0); |
058b8647 | 696 | init_completion(&req->completion); |
1da177e4 | 697 | |
c41f8cbd SS |
698 | req->adapter = adapter; |
699 | req->fsf_command = fsf_cmd; | |
52bfb558 | 700 | req->req_id = adapter->req_no; |
c41f8cbd | 701 | |
a4623c46 SS |
702 | if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) { |
703 | if (likely(pool)) | |
704 | req->qtcb = zfcp_qtcb_alloc(adapter->pool.qtcb_pool); | |
705 | else | |
706 | req->qtcb = zfcp_qtcb_alloc(NULL); | |
707 | ||
708 | if (unlikely(!req->qtcb)) { | |
709 | zfcp_fsf_req_free(req); | |
710 | return ERR_PTR(-ENOMEM); | |
711 | } | |
712 | ||
5bdecd22 | 713 | req->seq_no = adapter->fsf_req_seq_no; |
564e1c86 | 714 | req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; |
c41f8cbd SS |
715 | req->qtcb->prefix.req_id = req->req_id; |
716 | req->qtcb->prefix.ulp_info = 26; | |
717 | req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command]; | |
718 | req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION; | |
719 | req->qtcb->header.req_handle = req->req_id; | |
720 | req->qtcb->header.fsf_command = req->fsf_command; | |
c41f8cbd SS |
721 | } |
722 | ||
1674b405 CS |
723 | zfcp_qdio_req_init(adapter->qdio, &req->qdio_req, req->req_id, sbtype, |
724 | req->qtcb, sizeof(struct fsf_qtcb)); | |
725 | ||
c41f8cbd | 726 | return req; |
1da177e4 LT |
727 | } |
728 | ||
c41f8cbd SS |
729 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) |
730 | { | |
731 | struct zfcp_adapter *adapter = req->adapter; | |
564e1c86 | 732 | struct zfcp_qdio *qdio = adapter->qdio; |
b6bd2fb9 | 733 | int with_qtcb = (req->qtcb != NULL); |
e60a6d69 | 734 | int req_id = req->req_id; |
c41f8cbd | 735 | |
b6bd2fb9 | 736 | zfcp_reqlist_add(adapter->req_list, req); |
c41f8cbd | 737 | |
706eca49 | 738 | req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q_free); |
1aae0560 | 739 | req->issued = get_tod_clock(); |
34c2b712 | 740 | if (zfcp_qdio_send(qdio, &req->qdio_req)) { |
c41f8cbd | 741 | del_timer(&req->timer); |
3765138a | 742 | /* lookup request again, list might have changed */ |
b6bd2fb9 | 743 | zfcp_reqlist_find_rm(adapter->req_list, req_id); |
ea4a3a6a | 744 | zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1"); |
c41f8cbd SS |
745 | return -EIO; |
746 | } | |
747 | ||
748 | /* Don't increase for unsolicited status */ | |
135ea137 | 749 | if (with_qtcb) |
c41f8cbd | 750 | adapter->fsf_req_seq_no++; |
52bfb558 | 751 | adapter->req_no++; |
c41f8cbd SS |
752 | |
753 | return 0; | |
754 | } | |
755 | ||
756 | /** | |
757 | * zfcp_fsf_status_read - send status read request | |
758 | * @adapter: pointer to struct zfcp_adapter | |
759 | * @req_flags: request flags | |
760 | * Returns: 0 on success, ERROR otherwise | |
1da177e4 | 761 | */ |
564e1c86 | 762 | int zfcp_fsf_status_read(struct zfcp_qdio *qdio) |
1da177e4 | 763 | { |
564e1c86 | 764 | struct zfcp_adapter *adapter = qdio->adapter; |
c41f8cbd SS |
765 | struct zfcp_fsf_req *req; |
766 | struct fsf_status_read_buffer *sr_buf; | |
c7b279ae | 767 | struct page *page; |
c41f8cbd | 768 | int retval = -EIO; |
1da177e4 | 769 | |
44a24cb3 | 770 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 771 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd SS |
772 | goto out; |
773 | ||
75a1408d MP |
774 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS, |
775 | SBAL_SFLAGS0_TYPE_STATUS, | |
a4623c46 | 776 | adapter->pool.status_read_req); |
025270f0 | 777 | if (IS_ERR(req)) { |
c41f8cbd SS |
778 | retval = PTR_ERR(req); |
779 | goto out; | |
1da177e4 LT |
780 | } |
781 | ||
c7b279ae CS |
782 | page = mempool_alloc(adapter->pool.sr_data, GFP_ATOMIC); |
783 | if (!page) { | |
c41f8cbd SS |
784 | retval = -ENOMEM; |
785 | goto failed_buf; | |
786 | } | |
c7b279ae | 787 | sr_buf = page_address(page); |
c41f8cbd SS |
788 | memset(sr_buf, 0, sizeof(*sr_buf)); |
789 | req->data = sr_buf; | |
1674b405 CS |
790 | |
791 | zfcp_qdio_fill_next(qdio, &req->qdio_req, sr_buf, sizeof(*sr_buf)); | |
792 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); | |
059c97d0 | 793 | |
c41f8cbd SS |
794 | retval = zfcp_fsf_req_send(req); |
795 | if (retval) | |
796 | goto failed_req_send; | |
1da177e4 | 797 | |
c41f8cbd SS |
798 | goto out; |
799 | ||
800 | failed_req_send: | |
a54ca0f6 | 801 | req->data = NULL; |
c7b279ae | 802 | mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data); |
c41f8cbd | 803 | failed_buf: |
a54ca0f6 | 804 | zfcp_dbf_hba_fsf_uss("fssr__1", req); |
c41f8cbd | 805 | zfcp_fsf_req_free(req); |
c41f8cbd | 806 | out: |
44a24cb3 | 807 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd SS |
808 | return retval; |
809 | } | |
810 | ||
811 | static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req) | |
812 | { | |
b62a8d9b | 813 | struct scsi_device *sdev = req->data; |
d436de8c | 814 | struct zfcp_scsi_dev *zfcp_sdev; |
c41f8cbd SS |
815 | union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual; |
816 | ||
817 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
818 | return; | |
819 | ||
d436de8c MP |
820 | zfcp_sdev = sdev_to_zfcp(sdev); |
821 | ||
c41f8cbd | 822 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 823 | case FSF_PORT_HANDLE_NOT_VALID: |
c41f8cbd | 824 | if (fsq->word[0] == fsq->word[1]) { |
b62a8d9b | 825 | zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, |
ea4a3a6a | 826 | "fsafch1"); |
c41f8cbd | 827 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
828 | } |
829 | break; | |
1da177e4 | 830 | case FSF_LUN_HANDLE_NOT_VALID: |
c41f8cbd | 831 | if (fsq->word[0] == fsq->word[1]) { |
ea4a3a6a | 832 | zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fsafch2"); |
c41f8cbd | 833 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
834 | } |
835 | break; | |
1da177e4 | 836 | case FSF_FCP_COMMAND_DOES_NOT_EXIST: |
c41f8cbd | 837 | req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED; |
1da177e4 | 838 | break; |
1da177e4 | 839 | case FSF_PORT_BOXED: |
edaed859 SS |
840 | zfcp_erp_set_port_status(zfcp_sdev->port, |
841 | ZFCP_STATUS_COMMON_ACCESS_BOXED); | |
842 | zfcp_erp_port_reopen(zfcp_sdev->port, | |
ea4a3a6a | 843 | ZFCP_STATUS_COMMON_ERP_FAILED, "fsafch3"); |
4c571c65 | 844 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 845 | break; |
1da177e4 | 846 | case FSF_LUN_BOXED: |
edaed859 SS |
847 | zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED); |
848 | zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, | |
ea4a3a6a | 849 | "fsafch4"); |
4c571c65 | 850 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 851 | break; |
1da177e4 | 852 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 853 | switch (fsq->word[0]) { |
1da177e4 | 854 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
b62a8d9b | 855 | zfcp_fc_test_link(zfcp_sdev->port); |
dceab655 | 856 | /* fall through */ |
1da177e4 | 857 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 858 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 859 | break; |
1da177e4 LT |
860 | } |
861 | break; | |
1da177e4 | 862 | case FSF_GOOD: |
c41f8cbd | 863 | req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED; |
1da177e4 | 864 | break; |
1da177e4 | 865 | } |
1da177e4 LT |
866 | } |
867 | ||
868 | /** | |
b62a8d9b CS |
869 | * zfcp_fsf_abort_fcp_cmnd - abort running SCSI command |
870 | * @scmnd: The SCSI command to abort | |
c41f8cbd | 871 | * Returns: pointer to struct zfcp_fsf_req |
1da177e4 | 872 | */ |
1da177e4 | 873 | |
b62a8d9b | 874 | struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *scmnd) |
1da177e4 | 875 | { |
c41f8cbd | 876 | struct zfcp_fsf_req *req = NULL; |
b62a8d9b CS |
877 | struct scsi_device *sdev = scmnd->device; |
878 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); | |
879 | struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio; | |
880 | unsigned long old_req_id = (unsigned long) scmnd->host_scribble; | |
8a36e453 | 881 | |
44a24cb3 | 882 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 883 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 884 | goto out; |
564e1c86 | 885 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND, |
3ec90878 | 886 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 887 | qdio->adapter->pool.scsi_abort); |
633528c3 SS |
888 | if (IS_ERR(req)) { |
889 | req = NULL; | |
c41f8cbd | 890 | goto out; |
633528c3 | 891 | } |
2abbe866 | 892 | |
b62a8d9b | 893 | if (unlikely(!(atomic_read(&zfcp_sdev->status) & |
c41f8cbd SS |
894 | ZFCP_STATUS_COMMON_UNBLOCKED))) |
895 | goto out_error_free; | |
1da177e4 | 896 | |
1674b405 | 897 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 898 | |
6fbf25e8 | 899 | req->data = sdev; |
c41f8cbd | 900 | req->handler = zfcp_fsf_abort_fcp_command_handler; |
b62a8d9b CS |
901 | req->qtcb->header.lun_handle = zfcp_sdev->lun_handle; |
902 | req->qtcb->header.port_handle = zfcp_sdev->port->handle; | |
c41f8cbd SS |
903 | req->qtcb->bottom.support.req_handle = (u64) old_req_id; |
904 | ||
905 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); | |
906 | if (!zfcp_fsf_req_send(req)) | |
907 | goto out; | |
908 | ||
909 | out_error_free: | |
910 | zfcp_fsf_req_free(req); | |
911 | req = NULL; | |
912 | out: | |
44a24cb3 | 913 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd | 914 | return req; |
1da177e4 LT |
915 | } |
916 | ||
c41f8cbd | 917 | static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) |
1da177e4 | 918 | { |
c41f8cbd | 919 | struct zfcp_adapter *adapter = req->adapter; |
7c7dc196 | 920 | struct zfcp_fsf_ct_els *ct = req->data; |
c41f8cbd | 921 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1da177e4 | 922 | |
7c7dc196 | 923 | ct->status = -EINVAL; |
1da177e4 | 924 | |
c41f8cbd | 925 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
926 | goto skip_fsfstatus; |
927 | ||
1da177e4 | 928 | switch (header->fsf_status) { |
1da177e4 | 929 | case FSF_GOOD: |
7c7dc196 | 930 | ct->status = 0; |
975171b4 | 931 | zfcp_dbf_san_res("fsscth2", req); |
1da177e4 | 932 | break; |
1da177e4 | 933 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 934 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 935 | break; |
1da177e4 | 936 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
937 | switch (header->fsf_status_qual.word[0]){ |
938 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 939 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 940 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 941 | break; |
1da177e4 LT |
942 | } |
943 | break; | |
1da177e4 | 944 | case FSF_PORT_BOXED: |
4c571c65 | 945 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 946 | break; |
c41f8cbd | 947 | case FSF_PORT_HANDLE_NOT_VALID: |
ea4a3a6a | 948 | zfcp_erp_adapter_reopen(adapter, 0, "fsscth1"); |
dceab655 | 949 | /* fall through */ |
c41f8cbd | 950 | case FSF_GENERIC_COMMAND_REJECTED: |
1da177e4 | 951 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 952 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 953 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 954 | case FSF_SBAL_MISMATCH: |
c41f8cbd | 955 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
956 | break; |
957 | } | |
958 | ||
959 | skip_fsfstatus: | |
7c7dc196 CS |
960 | if (ct->handler) |
961 | ct->handler(ct->handler_data); | |
c41f8cbd | 962 | } |
1da177e4 | 963 | |
1674b405 CS |
964 | static void zfcp_fsf_setup_ct_els_unchained(struct zfcp_qdio *qdio, |
965 | struct zfcp_qdio_req *q_req, | |
426f6059 CS |
966 | struct scatterlist *sg_req, |
967 | struct scatterlist *sg_resp) | |
968 | { | |
1674b405 CS |
969 | zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_req), sg_req->length); |
970 | zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_resp), sg_resp->length); | |
971 | zfcp_qdio_set_sbale_last(qdio, q_req); | |
426f6059 CS |
972 | } |
973 | ||
39eb7e9a CS |
974 | static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req, |
975 | struct scatterlist *sg_req, | |
01b04759 | 976 | struct scatterlist *sg_resp) |
c41f8cbd | 977 | { |
42428f74 | 978 | struct zfcp_adapter *adapter = req->adapter; |
86a9668a SS |
979 | struct zfcp_qdio *qdio = adapter->qdio; |
980 | struct fsf_qtcb *qtcb = req->qtcb; | |
42428f74 | 981 | u32 feat = adapter->adapter_features; |
c41f8cbd | 982 | |
86a9668a SS |
983 | if (zfcp_adapter_multi_buffer_active(adapter)) { |
984 | if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req)) | |
985 | return -EIO; | |
70369f8e SM |
986 | qtcb->bottom.support.req_buf_length = |
987 | zfcp_qdio_real_bytes(sg_req); | |
86a9668a SS |
988 | if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp)) |
989 | return -EIO; | |
70369f8e SM |
990 | qtcb->bottom.support.resp_buf_length = |
991 | zfcp_qdio_real_bytes(sg_resp); | |
39eb7e9a | 992 | |
7d91869c | 993 | zfcp_qdio_set_data_div(qdio, &req->qdio_req, sg_nents(sg_req)); |
86a9668a SS |
994 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
995 | zfcp_qdio_set_scount(qdio, &req->qdio_req); | |
426f6059 CS |
996 | return 0; |
997 | } | |
998 | ||
999 | /* use single, unchained SBAL if it can hold the request */ | |
30b6777b | 1000 | if (zfcp_qdio_sg_one_sbale(sg_req) && zfcp_qdio_sg_one_sbale(sg_resp)) { |
86a9668a | 1001 | zfcp_fsf_setup_ct_els_unchained(qdio, &req->qdio_req, |
1674b405 | 1002 | sg_req, sg_resp); |
39eb7e9a CS |
1003 | return 0; |
1004 | } | |
1005 | ||
86a9668a SS |
1006 | if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) |
1007 | return -EOPNOTSUPP; | |
1008 | ||
1009 | if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req)) | |
9072df4d | 1010 | return -EIO; |
c41f8cbd | 1011 | |
86a9668a SS |
1012 | qtcb->bottom.support.req_buf_length = zfcp_qdio_real_bytes(sg_req); |
1013 | ||
1014 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); | |
1015 | zfcp_qdio_skip_to_last_sbale(qdio, &req->qdio_req); | |
1016 | ||
1017 | if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp)) | |
9072df4d | 1018 | return -EIO; |
86a9668a SS |
1019 | |
1020 | qtcb->bottom.support.resp_buf_length = zfcp_qdio_real_bytes(sg_resp); | |
1021 | ||
1022 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); | |
98fc4d5c | 1023 | |
b1a58985 CS |
1024 | return 0; |
1025 | } | |
1026 | ||
1027 | static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req, | |
1028 | struct scatterlist *sg_req, | |
1029 | struct scatterlist *sg_resp, | |
01b04759 | 1030 | unsigned int timeout) |
b1a58985 CS |
1031 | { |
1032 | int ret; | |
1033 | ||
01b04759 | 1034 | ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp); |
b1a58985 CS |
1035 | if (ret) |
1036 | return ret; | |
1037 | ||
98fc4d5c | 1038 | /* common settings for ct/gs and els requests */ |
51375ee8 SS |
1039 | if (timeout > 255) |
1040 | timeout = 255; /* max value accepted by hardware */ | |
98fc4d5c | 1041 | req->qtcb->bottom.support.service_class = FSF_CLASS_3; |
51375ee8 SS |
1042 | req->qtcb->bottom.support.timeout = timeout; |
1043 | zfcp_fsf_start_timer(req, (timeout + 10) * HZ); | |
c41f8cbd SS |
1044 | |
1045 | return 0; | |
1da177e4 LT |
1046 | } |
1047 | ||
1048 | /** | |
c41f8cbd SS |
1049 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) |
1050 | * @ct: pointer to struct zfcp_send_ct with data for request | |
1051 | * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req | |
1da177e4 | 1052 | */ |
7c7dc196 | 1053 | int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port, |
51375ee8 SS |
1054 | struct zfcp_fsf_ct_els *ct, mempool_t *pool, |
1055 | unsigned int timeout) | |
1da177e4 | 1056 | { |
564e1c86 | 1057 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
c41f8cbd SS |
1058 | struct zfcp_fsf_req *req; |
1059 | int ret = -EIO; | |
1da177e4 | 1060 | |
44a24cb3 | 1061 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1062 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1063 | goto out; |
1da177e4 | 1064 | |
1674b405 | 1065 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC, |
3ec90878 | 1066 | SBAL_SFLAGS0_TYPE_WRITE_READ, pool); |
09a46c6e | 1067 | |
025270f0 | 1068 | if (IS_ERR(req)) { |
c41f8cbd SS |
1069 | ret = PTR_ERR(req); |
1070 | goto out; | |
3f0ca62a CS |
1071 | } |
1072 | ||
09a46c6e | 1073 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
01b04759 | 1074 | ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp, timeout); |
553448f6 | 1075 | if (ret) |
1da177e4 | 1076 | goto failed_send; |
1da177e4 | 1077 | |
c41f8cbd | 1078 | req->handler = zfcp_fsf_send_ct_handler; |
5ab944f9 | 1079 | req->qtcb->header.port_handle = wka_port->handle; |
771bf035 | 1080 | ct->d_id = wka_port->d_id; |
c41f8cbd SS |
1081 | req->data = ct; |
1082 | ||
2c55b750 | 1083 | zfcp_dbf_san_req("fssct_1", req, wka_port->d_id); |
1da177e4 | 1084 | |
c41f8cbd SS |
1085 | ret = zfcp_fsf_req_send(req); |
1086 | if (ret) | |
1087 | goto failed_send; | |
1da177e4 | 1088 | |
c41f8cbd | 1089 | goto out; |
1da177e4 | 1090 | |
c41f8cbd SS |
1091 | failed_send: |
1092 | zfcp_fsf_req_free(req); | |
c41f8cbd | 1093 | out: |
44a24cb3 | 1094 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd | 1095 | return ret; |
1da177e4 LT |
1096 | } |
1097 | ||
c41f8cbd | 1098 | static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1099 | { |
7c7dc196 | 1100 | struct zfcp_fsf_ct_els *send_els = req->data; |
c41f8cbd | 1101 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1da177e4 | 1102 | |
c41f8cbd | 1103 | send_els->status = -EINVAL; |
1da177e4 | 1104 | |
c41f8cbd | 1105 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
1da177e4 LT |
1106 | goto skip_fsfstatus; |
1107 | ||
1108 | switch (header->fsf_status) { | |
1da177e4 | 1109 | case FSF_GOOD: |
c41f8cbd | 1110 | send_els->status = 0; |
975171b4 | 1111 | zfcp_dbf_san_res("fsselh1", req); |
1da177e4 | 1112 | break; |
1da177e4 | 1113 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
c41f8cbd | 1114 | zfcp_fsf_class_not_supp(req); |
1da177e4 | 1115 | break; |
1da177e4 | 1116 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1117 | switch (header->fsf_status_qual.word[0]){ |
1118 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
1da177e4 | 1119 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1120 | case FSF_SQ_RETRY_IF_POSSIBLE: |
c41f8cbd | 1121 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1122 | break; |
1da177e4 LT |
1123 | } |
1124 | break; | |
1da177e4 | 1125 | case FSF_ELS_COMMAND_REJECTED: |
1da177e4 | 1126 | case FSF_PAYLOAD_SIZE_MISMATCH: |
1da177e4 | 1127 | case FSF_REQUEST_SIZE_TOO_LARGE: |
1da177e4 | 1128 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
1da177e4 | 1129 | break; |
c41f8cbd | 1130 | case FSF_SBAL_MISMATCH: |
25985edc | 1131 | /* should never occur, avoided in zfcp_fsf_send_els */ |
c41f8cbd | 1132 | /* fall through */ |
1da177e4 | 1133 | default: |
c41f8cbd | 1134 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1135 | break; |
1136 | } | |
1da177e4 | 1137 | skip_fsfstatus: |
aa551daf | 1138 | if (send_els->handler) |
1da177e4 | 1139 | send_els->handler(send_els->handler_data); |
c41f8cbd | 1140 | } |
1da177e4 | 1141 | |
c41f8cbd SS |
1142 | /** |
1143 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) | |
1144 | * @els: pointer to struct zfcp_send_els with data for the command | |
1145 | */ | |
7c7dc196 | 1146 | int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id, |
51375ee8 | 1147 | struct zfcp_fsf_ct_els *els, unsigned int timeout) |
c41f8cbd SS |
1148 | { |
1149 | struct zfcp_fsf_req *req; | |
7c7dc196 | 1150 | struct zfcp_qdio *qdio = adapter->qdio; |
c41f8cbd SS |
1151 | int ret = -EIO; |
1152 | ||
44a24cb3 | 1153 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1154 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1155 | goto out; |
09a46c6e | 1156 | |
1674b405 | 1157 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS, |
3ec90878 | 1158 | SBAL_SFLAGS0_TYPE_WRITE_READ, NULL); |
09a46c6e | 1159 | |
025270f0 | 1160 | if (IS_ERR(req)) { |
c41f8cbd SS |
1161 | ret = PTR_ERR(req); |
1162 | goto out; | |
1163 | } | |
1164 | ||
09a46c6e | 1165 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
01b04759 | 1166 | |
86a9668a SS |
1167 | if (!zfcp_adapter_multi_buffer_active(adapter)) |
1168 | zfcp_qdio_sbal_limit(qdio, &req->qdio_req, 2); | |
01b04759 SS |
1169 | |
1170 | ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, timeout); | |
44cc76f2 | 1171 | |
c41f8cbd SS |
1172 | if (ret) |
1173 | goto failed_send; | |
1174 | ||
7c7dc196 | 1175 | hton24(req->qtcb->bottom.support.d_id, d_id); |
c41f8cbd | 1176 | req->handler = zfcp_fsf_send_els_handler; |
771bf035 | 1177 | els->d_id = d_id; |
c41f8cbd SS |
1178 | req->data = els; |
1179 | ||
2c55b750 | 1180 | zfcp_dbf_san_req("fssels1", req, d_id); |
c41f8cbd | 1181 | |
c41f8cbd SS |
1182 | ret = zfcp_fsf_req_send(req); |
1183 | if (ret) | |
1184 | goto failed_send; | |
1185 | ||
1186 | goto out; | |
1187 | ||
1188 | failed_send: | |
1189 | zfcp_fsf_req_free(req); | |
1190 | out: | |
44a24cb3 | 1191 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd | 1192 | return ret; |
1da177e4 LT |
1193 | } |
1194 | ||
c41f8cbd | 1195 | int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1196 | { |
c41f8cbd | 1197 | struct zfcp_fsf_req *req; |
564e1c86 | 1198 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1199 | int retval = -EIO; |
1200 | ||
44a24cb3 | 1201 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1202 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1203 | goto out; |
09a46c6e | 1204 | |
564e1c86 | 1205 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, |
3ec90878 | 1206 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1207 | qdio->adapter->pool.erp_req); |
09a46c6e | 1208 | |
025270f0 | 1209 | if (IS_ERR(req)) { |
c41f8cbd SS |
1210 | retval = PTR_ERR(req); |
1211 | goto out; | |
1da177e4 LT |
1212 | } |
1213 | ||
09a46c6e | 1214 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1215 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1216 | |
c41f8cbd | 1217 | req->qtcb->bottom.config.feature_selection = |
9eb69aff | 1218 | FSF_FEATURE_NOTIFICATION_LOST | |
aef4a983 | 1219 | FSF_FEATURE_UPDATE_ALERT; |
c41f8cbd SS |
1220 | req->erp_action = erp_action; |
1221 | req->handler = zfcp_fsf_exchange_config_data_handler; | |
e60a6d69 | 1222 | erp_action->fsf_req_id = req->req_id; |
1da177e4 | 1223 | |
287ac01a | 1224 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1225 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1226 | if (retval) { |
c41f8cbd | 1227 | zfcp_fsf_req_free(req); |
e60a6d69 | 1228 | erp_action->fsf_req_id = 0; |
1da177e4 | 1229 | } |
c41f8cbd | 1230 | out: |
44a24cb3 | 1231 | spin_unlock_irq(&qdio->req_q_lock); |
52ef11a7 SS |
1232 | return retval; |
1233 | } | |
1da177e4 | 1234 | |
564e1c86 | 1235 | int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio, |
c41f8cbd | 1236 | struct fsf_qtcb_bottom_config *data) |
52ef11a7 | 1237 | { |
c41f8cbd SS |
1238 | struct zfcp_fsf_req *req = NULL; |
1239 | int retval = -EIO; | |
1240 | ||
44a24cb3 | 1241 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1242 | if (zfcp_qdio_sbal_get(qdio)) |
ada81b74 | 1243 | goto out_unlock; |
c41f8cbd | 1244 | |
1674b405 | 1245 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, |
3ec90878 | 1246 | SBAL_SFLAGS0_TYPE_READ, NULL); |
09a46c6e | 1247 | |
025270f0 | 1248 | if (IS_ERR(req)) { |
c41f8cbd | 1249 | retval = PTR_ERR(req); |
ada81b74 | 1250 | goto out_unlock; |
52ef11a7 SS |
1251 | } |
1252 | ||
1674b405 | 1253 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
c41f8cbd | 1254 | req->handler = zfcp_fsf_exchange_config_data_handler; |
52ef11a7 | 1255 | |
c41f8cbd | 1256 | req->qtcb->bottom.config.feature_selection = |
52ef11a7 SS |
1257 | FSF_FEATURE_NOTIFICATION_LOST | |
1258 | FSF_FEATURE_UPDATE_ALERT; | |
1259 | ||
1260 | if (data) | |
c41f8cbd | 1261 | req->data = data; |
52ef11a7 | 1262 | |
c41f8cbd SS |
1263 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
1264 | retval = zfcp_fsf_req_send(req); | |
44a24cb3 | 1265 | spin_unlock_irq(&qdio->req_q_lock); |
553448f6 | 1266 | if (!retval) |
058b8647 | 1267 | wait_for_completion(&req->completion); |
52ef11a7 | 1268 | |
c41f8cbd | 1269 | zfcp_fsf_req_free(req); |
ada81b74 | 1270 | return retval; |
52ef11a7 | 1271 | |
ada81b74 | 1272 | out_unlock: |
44a24cb3 | 1273 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1274 | return retval; |
1275 | } | |
1276 | ||
1da177e4 LT |
1277 | /** |
1278 | * zfcp_fsf_exchange_port_data - request information about local port | |
aef4a983 | 1279 | * @erp_action: ERP action for the adapter for which port data is requested |
c41f8cbd | 1280 | * Returns: 0 on success, error otherwise |
1da177e4 | 1281 | */ |
c41f8cbd | 1282 | int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) |
1da177e4 | 1283 | { |
564e1c86 | 1284 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd | 1285 | struct zfcp_fsf_req *req; |
c41f8cbd | 1286 | int retval = -EIO; |
1da177e4 | 1287 | |
564e1c86 | 1288 | if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1289 | return -EOPNOTSUPP; |
1da177e4 | 1290 | |
44a24cb3 | 1291 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1292 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 1293 | goto out; |
09a46c6e | 1294 | |
564e1c86 | 1295 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, |
3ec90878 | 1296 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1297 | qdio->adapter->pool.erp_req); |
09a46c6e | 1298 | |
025270f0 | 1299 | if (IS_ERR(req)) { |
c41f8cbd SS |
1300 | retval = PTR_ERR(req); |
1301 | goto out; | |
aef4a983 MS |
1302 | } |
1303 | ||
09a46c6e | 1304 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1305 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1306 | |
c41f8cbd SS |
1307 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1308 | req->erp_action = erp_action; | |
e60a6d69 | 1309 | erp_action->fsf_req_id = req->req_id; |
52ef11a7 | 1310 | |
287ac01a | 1311 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1312 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1313 | if (retval) { |
c41f8cbd | 1314 | zfcp_fsf_req_free(req); |
e60a6d69 | 1315 | erp_action->fsf_req_id = 0; |
52ef11a7 | 1316 | } |
c41f8cbd | 1317 | out: |
44a24cb3 | 1318 | spin_unlock_irq(&qdio->req_q_lock); |
52ef11a7 SS |
1319 | return retval; |
1320 | } | |
1321 | ||
52ef11a7 SS |
1322 | /** |
1323 | * zfcp_fsf_exchange_port_data_sync - request information about local port | |
564e1c86 | 1324 | * @qdio: pointer to struct zfcp_qdio |
c41f8cbd SS |
1325 | * @data: pointer to struct fsf_qtcb_bottom_port |
1326 | * Returns: 0 on success, error otherwise | |
52ef11a7 | 1327 | */ |
564e1c86 | 1328 | int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio, |
c41f8cbd | 1329 | struct fsf_qtcb_bottom_port *data) |
52ef11a7 | 1330 | { |
c41f8cbd SS |
1331 | struct zfcp_fsf_req *req = NULL; |
1332 | int retval = -EIO; | |
52ef11a7 | 1333 | |
564e1c86 | 1334 | if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
52ef11a7 | 1335 | return -EOPNOTSUPP; |
52ef11a7 | 1336 | |
44a24cb3 | 1337 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1338 | if (zfcp_qdio_sbal_get(qdio)) |
ada81b74 | 1339 | goto out_unlock; |
c41f8cbd | 1340 | |
1674b405 | 1341 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, |
3ec90878 | 1342 | SBAL_SFLAGS0_TYPE_READ, NULL); |
09a46c6e | 1343 | |
025270f0 | 1344 | if (IS_ERR(req)) { |
c41f8cbd | 1345 | retval = PTR_ERR(req); |
ada81b74 | 1346 | goto out_unlock; |
1da177e4 LT |
1347 | } |
1348 | ||
52ef11a7 | 1349 | if (data) |
c41f8cbd | 1350 | req->data = data; |
52ef11a7 | 1351 | |
1674b405 | 1352 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
52ef11a7 | 1353 | |
c41f8cbd SS |
1354 | req->handler = zfcp_fsf_exchange_port_data_handler; |
1355 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1356 | retval = zfcp_fsf_req_send(req); | |
44a24cb3 | 1357 | spin_unlock_irq(&qdio->req_q_lock); |
ada81b74 | 1358 | |
553448f6 | 1359 | if (!retval) |
058b8647 SS |
1360 | wait_for_completion(&req->completion); |
1361 | ||
c41f8cbd | 1362 | zfcp_fsf_req_free(req); |
1da177e4 | 1363 | |
1da177e4 | 1364 | return retval; |
ada81b74 CS |
1365 | |
1366 | out_unlock: | |
44a24cb3 | 1367 | spin_unlock_irq(&qdio->req_q_lock); |
ada81b74 | 1368 | return retval; |
1da177e4 LT |
1369 | } |
1370 | ||
c41f8cbd | 1371 | static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1372 | { |
c41f8cbd SS |
1373 | struct zfcp_port *port = req->data; |
1374 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
9d05ce2c | 1375 | struct fc_els_flogi *plogi; |
1da177e4 | 1376 | |
c41f8cbd | 1377 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
a17c5855 | 1378 | goto out; |
1da177e4 | 1379 | |
1da177e4 | 1380 | switch (header->fsf_status) { |
1da177e4 | 1381 | case FSF_PORT_ALREADY_OPEN: |
1da177e4 | 1382 | break; |
1da177e4 | 1383 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: |
c41f8cbd | 1384 | dev_warn(&req->adapter->ccw_device->dev, |
ff3b24fa | 1385 | "Not enough FCP adapter resources to open " |
7ba58c9c SS |
1386 | "remote port 0x%016Lx\n", |
1387 | (unsigned long long)port->wwpn); | |
edaed859 SS |
1388 | zfcp_erp_set_port_status(port, |
1389 | ZFCP_STATUS_COMMON_ERP_FAILED); | |
c41f8cbd | 1390 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1391 | break; |
1da177e4 | 1392 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1393 | switch (header->fsf_status_qual.word[0]) { |
1394 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
394134fd SM |
1395 | /* no zfcp_fc_test_link() with failed open port */ |
1396 | /* fall through */ | |
1da177e4 | 1397 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
1da177e4 | 1398 | case FSF_SQ_NO_RETRY_POSSIBLE: |
c41f8cbd | 1399 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1400 | break; |
1401 | } | |
1402 | break; | |
1da177e4 | 1403 | case FSF_GOOD: |
1da177e4 | 1404 | port->handle = header->port_handle; |
805de8f4 | 1405 | atomic_or(ZFCP_STATUS_COMMON_OPEN | |
1da177e4 | 1406 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); |
805de8f4 | 1407 | atomic_andnot(ZFCP_STATUS_COMMON_ACCESS_BOXED, |
d736a27b | 1408 | &port->status); |
1da177e4 LT |
1409 | /* check whether D_ID has changed during open */ |
1410 | /* | |
1411 | * FIXME: This check is not airtight, as the FCP channel does | |
1412 | * not monitor closures of target port connections caused on | |
1413 | * the remote side. Thus, they might miss out on invalidating | |
1414 | * locally cached WWPNs (and other N_Port parameters) of gone | |
1415 | * target ports. So, our heroic attempt to make things safe | |
1416 | * could be undermined by 'open port' response data tagged with | |
1417 | * obsolete WWPNs. Another reason to monitor potential | |
1418 | * connection closures ourself at least (by interpreting | |
1419 | * incoming ELS' and unsolicited status). It just crosses my | |
1420 | * mind that one should be able to cross-check by means of | |
1421 | * another GID_PN straight after a port has been opened. | |
1422 | * Alternately, an ADISC/PDISC ELS should suffice, as well. | |
1423 | */ | |
9d05ce2c | 1424 | plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els; |
39eb7e9a | 1425 | if (req->qtcb->bottom.support.els1_length >= |
9d05ce2c | 1426 | FSF_PLOGI_MIN_LEN) |
c41f8cbd | 1427 | zfcp_fc_plogi_evaluate(port, plogi); |
1da177e4 | 1428 | break; |
1da177e4 | 1429 | case FSF_UNKNOWN_OP_SUBTYPE: |
c41f8cbd | 1430 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1431 | break; |
1432 | } | |
a17c5855 MP |
1433 | |
1434 | out: | |
615f59e0 | 1435 | put_device(&port->dev); |
1da177e4 LT |
1436 | } |
1437 | ||
c41f8cbd SS |
1438 | /** |
1439 | * zfcp_fsf_open_port - create and send open port request | |
1440 | * @erp_action: pointer to struct zfcp_erp_action | |
1441 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1442 | */ |
c41f8cbd | 1443 | int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1444 | { |
564e1c86 | 1445 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
a17c5855 | 1446 | struct zfcp_port *port = erp_action->port; |
564e1c86 | 1447 | struct zfcp_fsf_req *req; |
c41f8cbd SS |
1448 | int retval = -EIO; |
1449 | ||
44a24cb3 | 1450 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1451 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd SS |
1452 | goto out; |
1453 | ||
564e1c86 | 1454 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID, |
3ec90878 | 1455 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1456 | qdio->adapter->pool.erp_req); |
09a46c6e | 1457 | |
025270f0 | 1458 | if (IS_ERR(req)) { |
c41f8cbd | 1459 | retval = PTR_ERR(req); |
1da177e4 | 1460 | goto out; |
c41f8cbd | 1461 | } |
1da177e4 | 1462 | |
09a46c6e | 1463 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1464 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1465 | |
c41f8cbd | 1466 | req->handler = zfcp_fsf_open_port_handler; |
800c0cad | 1467 | hton24(req->qtcb->bottom.support.d_id, port->d_id); |
a17c5855 | 1468 | req->data = port; |
c41f8cbd | 1469 | req->erp_action = erp_action; |
e60a6d69 | 1470 | erp_action->fsf_req_id = req->req_id; |
615f59e0 | 1471 | get_device(&port->dev); |
c41f8cbd | 1472 | |
287ac01a | 1473 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1474 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1475 | if (retval) { |
c41f8cbd | 1476 | zfcp_fsf_req_free(req); |
e60a6d69 | 1477 | erp_action->fsf_req_id = 0; |
615f59e0 | 1478 | put_device(&port->dev); |
1da177e4 | 1479 | } |
c41f8cbd | 1480 | out: |
44a24cb3 | 1481 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1482 | return retval; |
1483 | } | |
1484 | ||
c41f8cbd | 1485 | static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1486 | { |
c41f8cbd | 1487 | struct zfcp_port *port = req->data; |
1da177e4 | 1488 | |
c41f8cbd | 1489 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1490 | return; |
1da177e4 | 1491 | |
c41f8cbd | 1492 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1493 | case FSF_PORT_HANDLE_NOT_VALID: |
ea4a3a6a | 1494 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1"); |
c41f8cbd | 1495 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1496 | break; |
1da177e4 | 1497 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 | 1498 | break; |
1da177e4 | 1499 | case FSF_GOOD: |
edaed859 | 1500 | zfcp_erp_clear_port_status(port, ZFCP_STATUS_COMMON_OPEN); |
1da177e4 | 1501 | break; |
1da177e4 | 1502 | } |
1da177e4 LT |
1503 | } |
1504 | ||
c41f8cbd SS |
1505 | /** |
1506 | * zfcp_fsf_close_port - create and send close port request | |
1507 | * @erp_action: pointer to struct zfcp_erp_action | |
1508 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1509 | */ |
c41f8cbd | 1510 | int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1511 | { |
564e1c86 | 1512 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1513 | struct zfcp_fsf_req *req; |
1514 | int retval = -EIO; | |
1515 | ||
44a24cb3 | 1516 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1517 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd SS |
1518 | goto out; |
1519 | ||
564e1c86 | 1520 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT, |
3ec90878 | 1521 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1522 | qdio->adapter->pool.erp_req); |
09a46c6e | 1523 | |
025270f0 | 1524 | if (IS_ERR(req)) { |
c41f8cbd | 1525 | retval = PTR_ERR(req); |
1da177e4 | 1526 | goto out; |
c41f8cbd | 1527 | } |
1da177e4 | 1528 | |
09a46c6e | 1529 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1530 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1531 | |
c41f8cbd SS |
1532 | req->handler = zfcp_fsf_close_port_handler; |
1533 | req->data = erp_action->port; | |
1534 | req->erp_action = erp_action; | |
1535 | req->qtcb->header.port_handle = erp_action->port->handle; | |
e60a6d69 | 1536 | erp_action->fsf_req_id = req->req_id; |
c41f8cbd | 1537 | |
287ac01a | 1538 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1539 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1540 | if (retval) { |
c41f8cbd | 1541 | zfcp_fsf_req_free(req); |
e60a6d69 | 1542 | erp_action->fsf_req_id = 0; |
1da177e4 | 1543 | } |
c41f8cbd | 1544 | out: |
44a24cb3 | 1545 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1546 | return retval; |
1547 | } | |
1548 | ||
5ab944f9 SS |
1549 | static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req) |
1550 | { | |
bd0072ec | 1551 | struct zfcp_fc_wka_port *wka_port = req->data; |
5ab944f9 SS |
1552 | struct fsf_qtcb_header *header = &req->qtcb->header; |
1553 | ||
1554 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) { | |
bd0072ec | 1555 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 SS |
1556 | goto out; |
1557 | } | |
1558 | ||
1559 | switch (header->fsf_status) { | |
1560 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: | |
1561 | dev_warn(&req->adapter->ccw_device->dev, | |
1562 | "Opening WKA port 0x%x failed\n", wka_port->d_id); | |
dceab655 | 1563 | /* fall through */ |
5ab944f9 SS |
1564 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1565 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
bd0072ec | 1566 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 | 1567 | break; |
5ab944f9 SS |
1568 | case FSF_GOOD: |
1569 | wka_port->handle = header->port_handle; | |
27f492cc SS |
1570 | /* fall through */ |
1571 | case FSF_PORT_ALREADY_OPEN: | |
bd0072ec | 1572 | wka_port->status = ZFCP_FC_WKA_PORT_ONLINE; |
5ab944f9 SS |
1573 | } |
1574 | out: | |
1575 | wake_up(&wka_port->completion_wq); | |
1576 | } | |
1577 | ||
1578 | /** | |
1579 | * zfcp_fsf_open_wka_port - create and send open wka-port request | |
bd0072ec | 1580 | * @wka_port: pointer to struct zfcp_fc_wka_port |
5ab944f9 SS |
1581 | * Returns: 0 on success, error otherwise |
1582 | */ | |
bd0072ec | 1583 | int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port) |
5ab944f9 | 1584 | { |
564e1c86 | 1585 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
2dfa6688 | 1586 | struct zfcp_fsf_req *req; |
5ab944f9 SS |
1587 | int retval = -EIO; |
1588 | ||
44a24cb3 | 1589 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1590 | if (zfcp_qdio_sbal_get(qdio)) |
5ab944f9 SS |
1591 | goto out; |
1592 | ||
564e1c86 | 1593 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID, |
3ec90878 | 1594 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1595 | qdio->adapter->pool.erp_req); |
09a46c6e | 1596 | |
4e7d7af4 | 1597 | if (IS_ERR(req)) { |
5ab944f9 SS |
1598 | retval = PTR_ERR(req); |
1599 | goto out; | |
1600 | } | |
1601 | ||
09a46c6e | 1602 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1603 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
5ab944f9 SS |
1604 | |
1605 | req->handler = zfcp_fsf_open_wka_port_handler; | |
800c0cad | 1606 | hton24(req->qtcb->bottom.support.d_id, wka_port->d_id); |
5ab944f9 SS |
1607 | req->data = wka_port; |
1608 | ||
1609 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1610 | retval = zfcp_fsf_req_send(req); | |
1611 | if (retval) | |
1612 | zfcp_fsf_req_free(req); | |
1613 | out: | |
44a24cb3 | 1614 | spin_unlock_irq(&qdio->req_q_lock); |
2dfa6688 | 1615 | if (!retval) |
d27a7cb9 | 1616 | zfcp_dbf_rec_run_wka("fsowp_1", wka_port, req->req_id); |
5ab944f9 SS |
1617 | return retval; |
1618 | } | |
1619 | ||
1620 | static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req) | |
1621 | { | |
bd0072ec | 1622 | struct zfcp_fc_wka_port *wka_port = req->data; |
5ab944f9 SS |
1623 | |
1624 | if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) { | |
1625 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
ea4a3a6a | 1626 | zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1"); |
5ab944f9 SS |
1627 | } |
1628 | ||
bd0072ec | 1629 | wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; |
5ab944f9 SS |
1630 | wake_up(&wka_port->completion_wq); |
1631 | } | |
1632 | ||
1633 | /** | |
1634 | * zfcp_fsf_close_wka_port - create and send close wka port request | |
bd0072ec | 1635 | * @wka_port: WKA port to open |
5ab944f9 SS |
1636 | * Returns: 0 on success, error otherwise |
1637 | */ | |
bd0072ec | 1638 | int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port) |
5ab944f9 | 1639 | { |
564e1c86 | 1640 | struct zfcp_qdio *qdio = wka_port->adapter->qdio; |
2dfa6688 | 1641 | struct zfcp_fsf_req *req; |
5ab944f9 SS |
1642 | int retval = -EIO; |
1643 | ||
44a24cb3 | 1644 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1645 | if (zfcp_qdio_sbal_get(qdio)) |
5ab944f9 SS |
1646 | goto out; |
1647 | ||
564e1c86 | 1648 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT, |
3ec90878 | 1649 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1650 | qdio->adapter->pool.erp_req); |
09a46c6e | 1651 | |
4e7d7af4 | 1652 | if (IS_ERR(req)) { |
5ab944f9 SS |
1653 | retval = PTR_ERR(req); |
1654 | goto out; | |
1655 | } | |
1656 | ||
09a46c6e | 1657 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1658 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
5ab944f9 SS |
1659 | |
1660 | req->handler = zfcp_fsf_close_wka_port_handler; | |
1661 | req->data = wka_port; | |
1662 | req->qtcb->header.port_handle = wka_port->handle; | |
1663 | ||
1664 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); | |
1665 | retval = zfcp_fsf_req_send(req); | |
1666 | if (retval) | |
1667 | zfcp_fsf_req_free(req); | |
1668 | out: | |
44a24cb3 | 1669 | spin_unlock_irq(&qdio->req_q_lock); |
2dfa6688 | 1670 | if (!retval) |
d27a7cb9 | 1671 | zfcp_dbf_rec_run_wka("fscwp_1", wka_port, req->req_id); |
5ab944f9 SS |
1672 | return retval; |
1673 | } | |
1674 | ||
c41f8cbd | 1675 | static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1676 | { |
c41f8cbd SS |
1677 | struct zfcp_port *port = req->data; |
1678 | struct fsf_qtcb_header *header = &req->qtcb->header; | |
b62a8d9b | 1679 | struct scsi_device *sdev; |
1da177e4 | 1680 | |
c41f8cbd | 1681 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
a5b11dda | 1682 | return; |
1da177e4 | 1683 | |
1da177e4 | 1684 | switch (header->fsf_status) { |
1da177e4 | 1685 | case FSF_PORT_HANDLE_NOT_VALID: |
ea4a3a6a | 1686 | zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1"); |
c41f8cbd | 1687 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1688 | break; |
1da177e4 | 1689 | case FSF_PORT_BOXED: |
5c815d15 CS |
1690 | /* can't use generic zfcp_erp_modify_port_status because |
1691 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */ | |
805de8f4 | 1692 | atomic_andnot(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); |
b62a8d9b CS |
1693 | shost_for_each_device(sdev, port->adapter->scsi_host) |
1694 | if (sdev_to_zfcp(sdev)->port == port) | |
805de8f4 | 1695 | atomic_andnot(ZFCP_STATUS_COMMON_OPEN, |
b62a8d9b | 1696 | &sdev_to_zfcp(sdev)->status); |
edaed859 SS |
1697 | zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ACCESS_BOXED); |
1698 | zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, | |
ea4a3a6a | 1699 | "fscpph2"); |
4c571c65 | 1700 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1701 | break; |
1da177e4 | 1702 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1703 | switch (header->fsf_status_qual.word[0]) { |
1704 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
c41f8cbd | 1705 | /* fall through */ |
1da177e4 | 1706 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1707 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1708 | break; |
1da177e4 LT |
1709 | } |
1710 | break; | |
1da177e4 | 1711 | case FSF_GOOD: |
1da177e4 LT |
1712 | /* can't use generic zfcp_erp_modify_port_status because |
1713 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port | |
1714 | */ | |
805de8f4 | 1715 | atomic_andnot(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); |
b62a8d9b CS |
1716 | shost_for_each_device(sdev, port->adapter->scsi_host) |
1717 | if (sdev_to_zfcp(sdev)->port == port) | |
805de8f4 | 1718 | atomic_andnot(ZFCP_STATUS_COMMON_OPEN, |
b62a8d9b | 1719 | &sdev_to_zfcp(sdev)->status); |
1da177e4 | 1720 | break; |
1da177e4 | 1721 | } |
1da177e4 LT |
1722 | } |
1723 | ||
c41f8cbd SS |
1724 | /** |
1725 | * zfcp_fsf_close_physical_port - close physical port | |
1726 | * @erp_action: pointer to struct zfcp_erp_action | |
1727 | * Returns: 0 on success | |
1da177e4 | 1728 | */ |
c41f8cbd | 1729 | int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) |
1da177e4 | 1730 | { |
564e1c86 | 1731 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
c41f8cbd SS |
1732 | struct zfcp_fsf_req *req; |
1733 | int retval = -EIO; | |
1734 | ||
44a24cb3 | 1735 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1736 | if (zfcp_qdio_sbal_get(qdio)) |
1da177e4 | 1737 | goto out; |
1da177e4 | 1738 | |
564e1c86 | 1739 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT, |
3ec90878 | 1740 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1741 | qdio->adapter->pool.erp_req); |
09a46c6e | 1742 | |
025270f0 | 1743 | if (IS_ERR(req)) { |
c41f8cbd SS |
1744 | retval = PTR_ERR(req); |
1745 | goto out; | |
1746 | } | |
1da177e4 | 1747 | |
09a46c6e | 1748 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1749 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1750 | |
c41f8cbd SS |
1751 | req->data = erp_action->port; |
1752 | req->qtcb->header.port_handle = erp_action->port->handle; | |
1753 | req->erp_action = erp_action; | |
1754 | req->handler = zfcp_fsf_close_physical_port_handler; | |
e60a6d69 | 1755 | erp_action->fsf_req_id = req->req_id; |
c41f8cbd | 1756 | |
287ac01a | 1757 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1758 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1759 | if (retval) { |
c41f8cbd | 1760 | zfcp_fsf_req_free(req); |
e60a6d69 | 1761 | erp_action->fsf_req_id = 0; |
1da177e4 | 1762 | } |
c41f8cbd | 1763 | out: |
44a24cb3 | 1764 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1765 | return retval; |
1766 | } | |
1767 | ||
b62a8d9b | 1768 | static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1769 | { |
c41f8cbd | 1770 | struct zfcp_adapter *adapter = req->adapter; |
b62a8d9b | 1771 | struct scsi_device *sdev = req->data; |
d436de8c | 1772 | struct zfcp_scsi_dev *zfcp_sdev; |
c41f8cbd | 1773 | struct fsf_qtcb_header *header = &req->qtcb->header; |
663e0890 | 1774 | union fsf_status_qual *qual = &header->fsf_status_qual; |
1da177e4 | 1775 | |
c41f8cbd | 1776 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1777 | return; |
1da177e4 | 1778 | |
d436de8c MP |
1779 | zfcp_sdev = sdev_to_zfcp(sdev); |
1780 | ||
805de8f4 | 1781 | atomic_andnot(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
663e0890 | 1782 | ZFCP_STATUS_COMMON_ACCESS_BOXED, |
b62a8d9b | 1783 | &zfcp_sdev->status); |
1da177e4 | 1784 | |
1da177e4 LT |
1785 | switch (header->fsf_status) { |
1786 | ||
1787 | case FSF_PORT_HANDLE_NOT_VALID: | |
ea4a3a6a | 1788 | zfcp_erp_adapter_reopen(adapter, 0, "fsouh_1"); |
c41f8cbd | 1789 | /* fall through */ |
1da177e4 | 1790 | case FSF_LUN_ALREADY_OPEN: |
1da177e4 | 1791 | break; |
1da177e4 | 1792 | case FSF_PORT_BOXED: |
edaed859 SS |
1793 | zfcp_erp_set_port_status(zfcp_sdev->port, |
1794 | ZFCP_STATUS_COMMON_ACCESS_BOXED); | |
1795 | zfcp_erp_port_reopen(zfcp_sdev->port, | |
ea4a3a6a | 1796 | ZFCP_STATUS_COMMON_ERP_FAILED, "fsouh_2"); |
4c571c65 | 1797 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1798 | break; |
1da177e4 | 1799 | case FSF_LUN_SHARING_VIOLATION: |
663e0890 MP |
1800 | if (qual->word[0]) |
1801 | dev_warn(&zfcp_sdev->port->adapter->ccw_device->dev, | |
1802 | "LUN 0x%Lx on port 0x%Lx is already in " | |
1803 | "use by CSS%d, MIF Image ID %x\n", | |
1804 | zfcp_scsi_dev_lun(sdev), | |
1805 | (unsigned long long)zfcp_sdev->port->wwpn, | |
1806 | qual->fsf_queue_designator.cssid, | |
1807 | qual->fsf_queue_designator.hla); | |
1808 | zfcp_erp_set_lun_status(sdev, | |
1809 | ZFCP_STATUS_COMMON_ERP_FAILED | | |
1810 | ZFCP_STATUS_COMMON_ACCESS_DENIED); | |
c41f8cbd | 1811 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1812 | break; |
1da177e4 | 1813 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: |
c41f8cbd | 1814 | dev_warn(&adapter->ccw_device->dev, |
ff3b24fa CS |
1815 | "No handle is available for LUN " |
1816 | "0x%016Lx on port 0x%016Lx\n", | |
b62a8d9b CS |
1817 | (unsigned long long)zfcp_scsi_dev_lun(sdev), |
1818 | (unsigned long long)zfcp_sdev->port->wwpn); | |
edaed859 | 1819 | zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ERP_FAILED); |
c41f8cbd SS |
1820 | /* fall through */ |
1821 | case FSF_INVALID_COMMAND_OPTION: | |
1822 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; | |
1da177e4 | 1823 | break; |
1da177e4 | 1824 | case FSF_ADAPTER_STATUS_AVAILABLE: |
1da177e4 LT |
1825 | switch (header->fsf_status_qual.word[0]) { |
1826 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: | |
b62a8d9b | 1827 | zfcp_fc_test_link(zfcp_sdev->port); |
c41f8cbd | 1828 | /* fall through */ |
1da177e4 | 1829 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1830 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1831 | break; |
1da177e4 LT |
1832 | } |
1833 | break; | |
1834 | ||
1da177e4 | 1835 | case FSF_GOOD: |
b62a8d9b | 1836 | zfcp_sdev->lun_handle = header->lun_handle; |
805de8f4 | 1837 | atomic_or(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status); |
1da177e4 | 1838 | break; |
1da177e4 | 1839 | } |
1da177e4 LT |
1840 | } |
1841 | ||
c41f8cbd | 1842 | /** |
b62a8d9b | 1843 | * zfcp_fsf_open_lun - open LUN |
c41f8cbd SS |
1844 | * @erp_action: pointer to struct zfcp_erp_action |
1845 | * Returns: 0 on success, error otherwise | |
1da177e4 | 1846 | */ |
b62a8d9b | 1847 | int zfcp_fsf_open_lun(struct zfcp_erp_action *erp_action) |
1da177e4 | 1848 | { |
c41f8cbd | 1849 | struct zfcp_adapter *adapter = erp_action->adapter; |
564e1c86 | 1850 | struct zfcp_qdio *qdio = adapter->qdio; |
c41f8cbd SS |
1851 | struct zfcp_fsf_req *req; |
1852 | int retval = -EIO; | |
1853 | ||
44a24cb3 | 1854 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1855 | if (zfcp_qdio_sbal_get(qdio)) |
1da177e4 | 1856 | goto out; |
1da177e4 | 1857 | |
564e1c86 | 1858 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN, |
3ec90878 | 1859 | SBAL_SFLAGS0_TYPE_READ, |
a4623c46 | 1860 | adapter->pool.erp_req); |
09a46c6e | 1861 | |
025270f0 | 1862 | if (IS_ERR(req)) { |
c41f8cbd SS |
1863 | retval = PTR_ERR(req); |
1864 | goto out; | |
1865 | } | |
1866 | ||
09a46c6e | 1867 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1868 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1869 | |
c41f8cbd | 1870 | req->qtcb->header.port_handle = erp_action->port->handle; |
b62a8d9b CS |
1871 | req->qtcb->bottom.support.fcp_lun = zfcp_scsi_dev_lun(erp_action->sdev); |
1872 | req->handler = zfcp_fsf_open_lun_handler; | |
1873 | req->data = erp_action->sdev; | |
c41f8cbd | 1874 | req->erp_action = erp_action; |
e60a6d69 | 1875 | erp_action->fsf_req_id = req->req_id; |
c41f8cbd SS |
1876 | |
1877 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) | |
1878 | req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING; | |
1879 | ||
287ac01a | 1880 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd | 1881 | retval = zfcp_fsf_req_send(req); |
1da177e4 | 1882 | if (retval) { |
c41f8cbd | 1883 | zfcp_fsf_req_free(req); |
e60a6d69 | 1884 | erp_action->fsf_req_id = 0; |
1da177e4 | 1885 | } |
c41f8cbd | 1886 | out: |
44a24cb3 | 1887 | spin_unlock_irq(&qdio->req_q_lock); |
1da177e4 LT |
1888 | return retval; |
1889 | } | |
1890 | ||
b62a8d9b | 1891 | static void zfcp_fsf_close_lun_handler(struct zfcp_fsf_req *req) |
1da177e4 | 1892 | { |
b62a8d9b | 1893 | struct scsi_device *sdev = req->data; |
d436de8c | 1894 | struct zfcp_scsi_dev *zfcp_sdev; |
1da177e4 | 1895 | |
c41f8cbd | 1896 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
44cc76f2 | 1897 | return; |
1da177e4 | 1898 | |
d436de8c MP |
1899 | zfcp_sdev = sdev_to_zfcp(sdev); |
1900 | ||
c41f8cbd | 1901 | switch (req->qtcb->header.fsf_status) { |
1da177e4 | 1902 | case FSF_PORT_HANDLE_NOT_VALID: |
ea4a3a6a | 1903 | zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fscuh_1"); |
c41f8cbd | 1904 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1905 | break; |
1da177e4 | 1906 | case FSF_LUN_HANDLE_NOT_VALID: |
ea4a3a6a | 1907 | zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fscuh_2"); |
c41f8cbd | 1908 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1909 | break; |
1da177e4 | 1910 | case FSF_PORT_BOXED: |
edaed859 SS |
1911 | zfcp_erp_set_port_status(zfcp_sdev->port, |
1912 | ZFCP_STATUS_COMMON_ACCESS_BOXED); | |
1913 | zfcp_erp_port_reopen(zfcp_sdev->port, | |
ea4a3a6a | 1914 | ZFCP_STATUS_COMMON_ERP_FAILED, "fscuh_3"); |
4c571c65 | 1915 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 1916 | break; |
1da177e4 | 1917 | case FSF_ADAPTER_STATUS_AVAILABLE: |
c41f8cbd | 1918 | switch (req->qtcb->header.fsf_status_qual.word[0]) { |
1da177e4 | 1919 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
b62a8d9b | 1920 | zfcp_fc_test_link(zfcp_sdev->port); |
c41f8cbd | 1921 | /* fall through */ |
1da177e4 | 1922 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
c41f8cbd | 1923 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 LT |
1924 | break; |
1925 | } | |
1926 | break; | |
1da177e4 | 1927 | case FSF_GOOD: |
805de8f4 | 1928 | atomic_andnot(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status); |
1da177e4 | 1929 | break; |
1da177e4 | 1930 | } |
1da177e4 LT |
1931 | } |
1932 | ||
1933 | /** | |
b62a8d9b CS |
1934 | * zfcp_fsf_close_LUN - close LUN |
1935 | * @erp_action: pointer to erp_action triggering the "close LUN" | |
c41f8cbd | 1936 | * Returns: 0 on success, error otherwise |
1da177e4 | 1937 | */ |
b62a8d9b | 1938 | int zfcp_fsf_close_lun(struct zfcp_erp_action *erp_action) |
1da177e4 | 1939 | { |
564e1c86 | 1940 | struct zfcp_qdio *qdio = erp_action->adapter->qdio; |
b62a8d9b | 1941 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(erp_action->sdev); |
c41f8cbd SS |
1942 | struct zfcp_fsf_req *req; |
1943 | int retval = -EIO; | |
1da177e4 | 1944 | |
44a24cb3 | 1945 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 1946 | if (zfcp_qdio_sbal_get(qdio)) |
1da177e4 | 1947 | goto out; |
09a46c6e | 1948 | |
564e1c86 | 1949 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN, |
3ec90878 | 1950 | SBAL_SFLAGS0_TYPE_READ, |
564e1c86 | 1951 | qdio->adapter->pool.erp_req); |
09a46c6e | 1952 | |
025270f0 | 1953 | if (IS_ERR(req)) { |
c41f8cbd SS |
1954 | retval = PTR_ERR(req); |
1955 | goto out; | |
1956 | } | |
1da177e4 | 1957 | |
09a46c6e | 1958 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
1674b405 | 1959 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 1960 | |
c41f8cbd | 1961 | req->qtcb->header.port_handle = erp_action->port->handle; |
b62a8d9b CS |
1962 | req->qtcb->header.lun_handle = zfcp_sdev->lun_handle; |
1963 | req->handler = zfcp_fsf_close_lun_handler; | |
1964 | req->data = erp_action->sdev; | |
c41f8cbd | 1965 | req->erp_action = erp_action; |
e60a6d69 | 1966 | erp_action->fsf_req_id = req->req_id; |
fdf23452 | 1967 | |
287ac01a | 1968 | zfcp_fsf_start_erp_timer(req); |
c41f8cbd SS |
1969 | retval = zfcp_fsf_req_send(req); |
1970 | if (retval) { | |
1971 | zfcp_fsf_req_free(req); | |
e60a6d69 | 1972 | erp_action->fsf_req_id = 0; |
c41f8cbd SS |
1973 | } |
1974 | out: | |
44a24cb3 | 1975 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd | 1976 | return retval; |
1da177e4 LT |
1977 | } |
1978 | ||
c9615858 CS |
1979 | static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat) |
1980 | { | |
1981 | lat_rec->sum += lat; | |
c41f8cbd SS |
1982 | lat_rec->min = min(lat_rec->min, lat); |
1983 | lat_rec->max = max(lat_rec->max, lat); | |
c9615858 CS |
1984 | } |
1985 | ||
d9742b42 | 1986 | static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi) |
c9615858 | 1987 | { |
d9742b42 CS |
1988 | struct fsf_qual_latency_info *lat_in; |
1989 | struct latency_cont *lat = NULL; | |
d436de8c | 1990 | struct zfcp_scsi_dev *zfcp_sdev; |
d9742b42 CS |
1991 | struct zfcp_blk_drv_data blktrc; |
1992 | int ticks = req->adapter->timer_ticks; | |
c9615858 | 1993 | |
d9742b42 | 1994 | lat_in = &req->qtcb->prefix.prot_status_qual.latency_info; |
c9615858 | 1995 | |
d9742b42 CS |
1996 | blktrc.flags = 0; |
1997 | blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC; | |
1998 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) | |
1999 | blktrc.flags |= ZFCP_BLK_REQ_ERROR; | |
706eca49 | 2000 | blktrc.inb_usage = 0; |
34c2b712 | 2001 | blktrc.outb_usage = req->qdio_req.qdio_outb_usage; |
d9742b42 | 2002 | |
5bbf297c CS |
2003 | if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA && |
2004 | !(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { | |
d436de8c | 2005 | zfcp_sdev = sdev_to_zfcp(scsi->device); |
d9742b42 CS |
2006 | blktrc.flags |= ZFCP_BLK_LAT_VALID; |
2007 | blktrc.channel_lat = lat_in->channel_lat * ticks; | |
2008 | blktrc.fabric_lat = lat_in->fabric_lat * ticks; | |
2009 | ||
2010 | switch (req->qtcb->bottom.io.data_direction) { | |
ef3eb71d FB |
2011 | case FSF_DATADIR_DIF_READ_STRIP: |
2012 | case FSF_DATADIR_DIF_READ_CONVERT: | |
d9742b42 | 2013 | case FSF_DATADIR_READ: |
b62a8d9b | 2014 | lat = &zfcp_sdev->latencies.read; |
d9742b42 | 2015 | break; |
ef3eb71d FB |
2016 | case FSF_DATADIR_DIF_WRITE_INSERT: |
2017 | case FSF_DATADIR_DIF_WRITE_CONVERT: | |
d9742b42 | 2018 | case FSF_DATADIR_WRITE: |
b62a8d9b | 2019 | lat = &zfcp_sdev->latencies.write; |
d9742b42 CS |
2020 | break; |
2021 | case FSF_DATADIR_CMND: | |
b62a8d9b | 2022 | lat = &zfcp_sdev->latencies.cmd; |
d9742b42 CS |
2023 | break; |
2024 | } | |
1da177e4 | 2025 | |
d9742b42 | 2026 | if (lat) { |
b62a8d9b | 2027 | spin_lock(&zfcp_sdev->latencies.lock); |
d9742b42 CS |
2028 | zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat); |
2029 | zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat); | |
2030 | lat->counter++; | |
b62a8d9b | 2031 | spin_unlock(&zfcp_sdev->latencies.lock); |
d9742b42 | 2032 | } |
0997f1c5 | 2033 | } |
0997f1c5 | 2034 | |
d9742b42 CS |
2035 | blk_add_driver_data(scsi->request->q, scsi->request, &blktrc, |
2036 | sizeof(blktrc)); | |
0997f1c5 | 2037 | } |
0997f1c5 | 2038 | |
c61b536c | 2039 | static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req *req) |
c41f8cbd | 2040 | { |
b62a8d9b CS |
2041 | struct scsi_cmnd *scmnd = req->data; |
2042 | struct scsi_device *sdev = scmnd->device; | |
d436de8c | 2043 | struct zfcp_scsi_dev *zfcp_sdev; |
c41f8cbd SS |
2044 | struct fsf_qtcb_header *header = &req->qtcb->header; |
2045 | ||
c41f8cbd | 2046 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
c61b536c | 2047 | return; |
1da177e4 | 2048 | |
d436de8c MP |
2049 | zfcp_sdev = sdev_to_zfcp(sdev); |
2050 | ||
c41f8cbd SS |
2051 | switch (header->fsf_status) { |
2052 | case FSF_HANDLE_MISMATCH: | |
2053 | case FSF_PORT_HANDLE_NOT_VALID: | |
ea4a3a6a | 2054 | zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fssfch1"); |
c41f8cbd SS |
2055 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2056 | break; | |
2057 | case FSF_FCPLUN_NOT_VALID: | |
2058 | case FSF_LUN_HANDLE_NOT_VALID: | |
ea4a3a6a | 2059 | zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fssfch2"); |
c41f8cbd | 2060 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2061 | break; |
c41f8cbd SS |
2062 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
2063 | zfcp_fsf_class_not_supp(req); | |
1da177e4 | 2064 | break; |
c41f8cbd SS |
2065 | case FSF_DIRECTION_INDICATOR_NOT_VALID: |
2066 | dev_err(&req->adapter->ccw_device->dev, | |
b62a8d9b | 2067 | "Incorrect direction %d, LUN 0x%016Lx on port " |
ff3b24fa | 2068 | "0x%016Lx closed\n", |
c41f8cbd | 2069 | req->qtcb->bottom.io.data_direction, |
b62a8d9b CS |
2070 | (unsigned long long)zfcp_scsi_dev_lun(sdev), |
2071 | (unsigned long long)zfcp_sdev->port->wwpn); | |
2072 | zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0, | |
ea4a3a6a | 2073 | "fssfch3"); |
c41f8cbd SS |
2074 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2075 | break; | |
2076 | case FSF_CMND_LENGTH_NOT_VALID: | |
2077 | dev_err(&req->adapter->ccw_device->dev, | |
b62a8d9b | 2078 | "Incorrect CDB length %d, LUN 0x%016Lx on " |
ff3b24fa | 2079 | "port 0x%016Lx closed\n", |
c41f8cbd | 2080 | req->qtcb->bottom.io.fcp_cmnd_length, |
b62a8d9b CS |
2081 | (unsigned long long)zfcp_scsi_dev_lun(sdev), |
2082 | (unsigned long long)zfcp_sdev->port->wwpn); | |
2083 | zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0, | |
ea4a3a6a | 2084 | "fssfch4"); |
c41f8cbd SS |
2085 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
2086 | break; | |
2087 | case FSF_PORT_BOXED: | |
edaed859 SS |
2088 | zfcp_erp_set_port_status(zfcp_sdev->port, |
2089 | ZFCP_STATUS_COMMON_ACCESS_BOXED); | |
2090 | zfcp_erp_port_reopen(zfcp_sdev->port, | |
ea4a3a6a | 2091 | ZFCP_STATUS_COMMON_ERP_FAILED, "fssfch5"); |
4c571c65 | 2092 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
2093 | break; |
2094 | case FSF_LUN_BOXED: | |
edaed859 SS |
2095 | zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED); |
2096 | zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, | |
ea4a3a6a | 2097 | "fssfch6"); |
4c571c65 | 2098 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
c41f8cbd SS |
2099 | break; |
2100 | case FSF_ADAPTER_STATUS_AVAILABLE: | |
2101 | if (header->fsf_status_qual.word[0] == | |
2102 | FSF_SQ_INVOKE_LINK_TEST_PROCEDURE) | |
b62a8d9b | 2103 | zfcp_fc_test_link(zfcp_sdev->port); |
c41f8cbd | 2104 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
1da177e4 | 2105 | break; |
1da177e4 | 2106 | } |
c61b536c CS |
2107 | } |
2108 | ||
2109 | static void zfcp_fsf_fcp_cmnd_handler(struct zfcp_fsf_req *req) | |
2110 | { | |
2111 | struct scsi_cmnd *scpnt; | |
2112 | struct fcp_resp_with_ext *fcp_rsp; | |
2113 | unsigned long flags; | |
2114 | ||
c61b536c CS |
2115 | read_lock_irqsave(&req->adapter->abort_lock, flags); |
2116 | ||
2117 | scpnt = req->data; | |
2118 | if (unlikely(!scpnt)) { | |
2119 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); | |
2120 | return; | |
c41f8cbd | 2121 | } |
c61b536c | 2122 | |
5bfb2c31 SS |
2123 | zfcp_fsf_fcp_handler_common(req); |
2124 | ||
c61b536c CS |
2125 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { |
2126 | set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED); | |
2127 | goto skip_fsfstatus; | |
2128 | } | |
2129 | ||
2130 | switch (req->qtcb->header.fsf_status) { | |
2131 | case FSF_INCONSISTENT_PROT_DATA: | |
2132 | case FSF_INVALID_PROT_PARM: | |
2133 | set_host_byte(scpnt, DID_ERROR); | |
2134 | goto skip_fsfstatus; | |
2135 | case FSF_BLOCK_GUARD_CHECK_FAILURE: | |
2136 | zfcp_scsi_dif_sense_error(scpnt, 0x1); | |
2137 | goto skip_fsfstatus; | |
2138 | case FSF_APP_TAG_CHECK_FAILURE: | |
2139 | zfcp_scsi_dif_sense_error(scpnt, 0x2); | |
2140 | goto skip_fsfstatus; | |
2141 | case FSF_REF_TAG_CHECK_FAILURE: | |
2142 | zfcp_scsi_dif_sense_error(scpnt, 0x3); | |
2143 | goto skip_fsfstatus; | |
2144 | } | |
df00d7b8 SM |
2145 | BUILD_BUG_ON(sizeof(struct fcp_resp_with_ext) > FSF_FCP_RSP_SIZE); |
2146 | fcp_rsp = &req->qtcb->bottom.io.fcp_rsp.iu; | |
c61b536c CS |
2147 | zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt); |
2148 | ||
2149 | skip_fsfstatus: | |
2150 | zfcp_fsf_req_trace(req, scpnt); | |
250a1352 | 2151 | zfcp_dbf_scsi_result(scpnt, req); |
c61b536c CS |
2152 | |
2153 | scpnt->host_scribble = NULL; | |
2154 | (scpnt->scsi_done) (scpnt); | |
2155 | /* | |
2156 | * We must hold this lock until scsi_done has been called. | |
2157 | * Otherwise we may call scsi_done after abort regarding this | |
2158 | * command has completed. | |
2159 | * Note: scsi_done must not block! | |
2160 | */ | |
2161 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); | |
1da177e4 LT |
2162 | } |
2163 | ||
ef3eb71d FB |
2164 | static int zfcp_fsf_set_data_dir(struct scsi_cmnd *scsi_cmnd, u32 *data_dir) |
2165 | { | |
2166 | switch (scsi_get_prot_op(scsi_cmnd)) { | |
2167 | case SCSI_PROT_NORMAL: | |
2168 | switch (scsi_cmnd->sc_data_direction) { | |
2169 | case DMA_NONE: | |
2170 | *data_dir = FSF_DATADIR_CMND; | |
2171 | break; | |
2172 | case DMA_FROM_DEVICE: | |
2173 | *data_dir = FSF_DATADIR_READ; | |
2174 | break; | |
2175 | case DMA_TO_DEVICE: | |
2176 | *data_dir = FSF_DATADIR_WRITE; | |
2177 | break; | |
2178 | case DMA_BIDIRECTIONAL: | |
2179 | return -EINVAL; | |
2180 | } | |
2181 | break; | |
2182 | ||
2183 | case SCSI_PROT_READ_STRIP: | |
2184 | *data_dir = FSF_DATADIR_DIF_READ_STRIP; | |
2185 | break; | |
2186 | case SCSI_PROT_WRITE_INSERT: | |
2187 | *data_dir = FSF_DATADIR_DIF_WRITE_INSERT; | |
2188 | break; | |
2189 | case SCSI_PROT_READ_PASS: | |
2190 | *data_dir = FSF_DATADIR_DIF_READ_CONVERT; | |
2191 | break; | |
2192 | case SCSI_PROT_WRITE_PASS: | |
2193 | *data_dir = FSF_DATADIR_DIF_WRITE_CONVERT; | |
2194 | break; | |
2195 | default: | |
2196 | return -EINVAL; | |
2197 | } | |
2198 | ||
2199 | return 0; | |
2200 | } | |
2201 | ||
c41f8cbd | 2202 | /** |
b62a8d9b | 2203 | * zfcp_fsf_fcp_cmnd - initiate an FCP command (for a SCSI command) |
c41f8cbd | 2204 | * @scsi_cmnd: scsi command to be sent |
1da177e4 | 2205 | */ |
b62a8d9b | 2206 | int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd) |
1da177e4 | 2207 | { |
c41f8cbd | 2208 | struct zfcp_fsf_req *req; |
4318e08c | 2209 | struct fcp_cmnd *fcp_cmnd; |
3ec90878 | 2210 | u8 sbtype = SBAL_SFLAGS0_TYPE_READ; |
86a9668a | 2211 | int retval = -EIO; |
b62a8d9b CS |
2212 | struct scsi_device *sdev = scsi_cmnd->device; |
2213 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); | |
2214 | struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; | |
564e1c86 | 2215 | struct zfcp_qdio *qdio = adapter->qdio; |
ef3eb71d | 2216 | struct fsf_qtcb_bottom_io *io; |
e55f8753 | 2217 | unsigned long flags; |
1da177e4 | 2218 | |
b62a8d9b | 2219 | if (unlikely(!(atomic_read(&zfcp_sdev->status) & |
c41f8cbd SS |
2220 | ZFCP_STATUS_COMMON_UNBLOCKED))) |
2221 | return -EBUSY; | |
1da177e4 | 2222 | |
e55f8753 | 2223 | spin_lock_irqsave(&qdio->req_q_lock, flags); |
706eca49 | 2224 | if (atomic_read(&qdio->req_q_free) <= 0) { |
564e1c86 | 2225 | atomic_inc(&qdio->req_q_full); |
c41f8cbd | 2226 | goto out; |
8fdf30d5 | 2227 | } |
09a46c6e | 2228 | |
1674b405 | 2229 | if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE) |
3ec90878 | 2230 | sbtype = SBAL_SFLAGS0_TYPE_WRITE; |
1674b405 | 2231 | |
564e1c86 | 2232 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND, |
1674b405 | 2233 | sbtype, adapter->pool.scsi_req); |
09a46c6e | 2234 | |
025270f0 | 2235 | if (IS_ERR(req)) { |
c41f8cbd SS |
2236 | retval = PTR_ERR(req); |
2237 | goto out; | |
2238 | } | |
2239 | ||
ef3eb71d FB |
2240 | scsi_cmnd->host_scribble = (unsigned char *) req->req_id; |
2241 | ||
2242 | io = &req->qtcb->bottom.io; | |
09a46c6e | 2243 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
c41f8cbd | 2244 | req->data = scsi_cmnd; |
c61b536c | 2245 | req->handler = zfcp_fsf_fcp_cmnd_handler; |
b62a8d9b CS |
2246 | req->qtcb->header.lun_handle = zfcp_sdev->lun_handle; |
2247 | req->qtcb->header.port_handle = zfcp_sdev->port->handle; | |
ef3eb71d FB |
2248 | io->service_class = FSF_CLASS_3; |
2249 | io->fcp_cmnd_length = FCP_CMND_LEN; | |
c41f8cbd | 2250 | |
ef3eb71d FB |
2251 | if (scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) { |
2252 | io->data_block_length = scsi_cmnd->device->sector_size; | |
2253 | io->ref_tag_value = scsi_get_lba(scsi_cmnd) & 0xFFFFFFFF; | |
1da177e4 LT |
2254 | } |
2255 | ||
cc405ace SM |
2256 | if (zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction)) |
2257 | goto failed_scsi_cmnd; | |
ef3eb71d | 2258 | |
df00d7b8 SM |
2259 | BUILD_BUG_ON(sizeof(struct fcp_cmnd) > FSF_FCP_CMND_SIZE); |
2260 | fcp_cmnd = &req->qtcb->bottom.io.fcp_cmnd.iu; | |
2443c8b2 | 2261 | zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd, 0); |
1da177e4 | 2262 | |
71b8e45d SM |
2263 | if ((scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) && |
2264 | scsi_prot_sg_count(scsi_cmnd)) { | |
ef3eb71d FB |
2265 | zfcp_qdio_set_data_div(qdio, &req->qdio_req, |
2266 | scsi_prot_sg_count(scsi_cmnd)); | |
86a9668a SS |
2267 | retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, |
2268 | scsi_prot_sglist(scsi_cmnd)); | |
2269 | if (retval) | |
2270 | goto failed_scsi_cmnd; | |
2271 | io->prot_data_length = zfcp_qdio_real_bytes( | |
ef3eb71d | 2272 | scsi_prot_sglist(scsi_cmnd)); |
ef3eb71d FB |
2273 | } |
2274 | ||
86a9668a SS |
2275 | retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, |
2276 | scsi_sglist(scsi_cmnd)); | |
2277 | if (unlikely(retval)) | |
c41f8cbd | 2278 | goto failed_scsi_cmnd; |
1da177e4 | 2279 | |
ef3eb71d | 2280 | zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req); |
86a9668a SS |
2281 | if (zfcp_adapter_multi_buffer_active(adapter)) |
2282 | zfcp_qdio_set_scount(qdio, &req->qdio_req); | |
ef3eb71d | 2283 | |
c41f8cbd SS |
2284 | retval = zfcp_fsf_req_send(req); |
2285 | if (unlikely(retval)) | |
2286 | goto failed_scsi_cmnd; | |
1da177e4 | 2287 | |
c41f8cbd | 2288 | goto out; |
1da177e4 | 2289 | |
c41f8cbd | 2290 | failed_scsi_cmnd: |
c41f8cbd SS |
2291 | zfcp_fsf_req_free(req); |
2292 | scsi_cmnd->host_scribble = NULL; | |
2293 | out: | |
e55f8753 | 2294 | spin_unlock_irqrestore(&qdio->req_q_lock, flags); |
c41f8cbd | 2295 | return retval; |
1da177e4 LT |
2296 | } |
2297 | ||
c61b536c CS |
2298 | static void zfcp_fsf_fcp_task_mgmt_handler(struct zfcp_fsf_req *req) |
2299 | { | |
2300 | struct fcp_resp_with_ext *fcp_rsp; | |
2301 | struct fcp_resp_rsp_info *rsp_info; | |
2302 | ||
2303 | zfcp_fsf_fcp_handler_common(req); | |
2304 | ||
df00d7b8 | 2305 | fcp_rsp = &req->qtcb->bottom.io.fcp_rsp.iu; |
c61b536c CS |
2306 | rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1]; |
2307 | ||
2308 | if ((rsp_info->rsp_code != FCP_TMF_CMPL) || | |
2309 | (req->status & ZFCP_STATUS_FSFREQ_ERROR)) | |
2310 | req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; | |
2311 | } | |
2312 | ||
1da177e4 | 2313 | /** |
b62a8d9b CS |
2314 | * zfcp_fsf_fcp_task_mgmt - send SCSI task management command |
2315 | * @scmnd: SCSI command to send the task management command for | |
c41f8cbd | 2316 | * @tm_flags: unsigned byte for task management flags |
c41f8cbd | 2317 | * Returns: on success pointer to struct fsf_req, NULL otherwise |
1da177e4 | 2318 | */ |
b62a8d9b CS |
2319 | struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_cmnd *scmnd, |
2320 | u8 tm_flags) | |
1da177e4 | 2321 | { |
c41f8cbd | 2322 | struct zfcp_fsf_req *req = NULL; |
4318e08c | 2323 | struct fcp_cmnd *fcp_cmnd; |
b62a8d9b CS |
2324 | struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scmnd->device); |
2325 | struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio; | |
1da177e4 | 2326 | |
b62a8d9b | 2327 | if (unlikely(!(atomic_read(&zfcp_sdev->status) & |
c41f8cbd SS |
2328 | ZFCP_STATUS_COMMON_UNBLOCKED))) |
2329 | return NULL; | |
1da177e4 | 2330 | |
44a24cb3 | 2331 | spin_lock_irq(&qdio->req_q_lock); |
6b9e1520 | 2332 | if (zfcp_qdio_sbal_get(qdio)) |
c41f8cbd | 2333 | goto out; |
09a46c6e | 2334 | |
564e1c86 | 2335 | req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND, |
3ec90878 | 2336 | SBAL_SFLAGS0_TYPE_WRITE, |
564e1c86 | 2337 | qdio->adapter->pool.scsi_req); |
09a46c6e | 2338 | |
633528c3 SS |
2339 | if (IS_ERR(req)) { |
2340 | req = NULL; | |
c41f8cbd | 2341 | goto out; |
633528c3 | 2342 | } |
1da177e4 | 2343 | |
b62a8d9b | 2344 | req->data = scmnd; |
c61b536c | 2345 | req->handler = zfcp_fsf_fcp_task_mgmt_handler; |
b62a8d9b CS |
2346 | req->qtcb->header.lun_handle = zfcp_sdev->lun_handle; |
2347 | req->qtcb->header.port_handle = zfcp_sdev->port->handle; | |
c41f8cbd SS |
2348 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; |
2349 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; | |
4318e08c | 2350 | req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN; |
c41f8cbd | 2351 | |
1674b405 | 2352 | zfcp_qdio_set_sbale_last(qdio, &req->qdio_req); |
1da177e4 | 2353 | |
df00d7b8 | 2354 | fcp_cmnd = &req->qtcb->bottom.io.fcp_cmnd.iu; |
2443c8b2 | 2355 | zfcp_fc_scsi_to_fcp(fcp_cmnd, scmnd, tm_flags); |
1da177e4 | 2356 | |
c41f8cbd SS |
2357 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); |
2358 | if (!zfcp_fsf_req_send(req)) | |
2359 | goto out; | |
1da177e4 | 2360 | |
c41f8cbd SS |
2361 | zfcp_fsf_req_free(req); |
2362 | req = NULL; | |
2363 | out: | |
44a24cb3 | 2364 | spin_unlock_irq(&qdio->req_q_lock); |
c41f8cbd SS |
2365 | return req; |
2366 | } | |
1da177e4 | 2367 | |
bd63eaf4 SS |
2368 | /** |
2369 | * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO | |
2370 | * @adapter: pointer to struct zfcp_adapter | |
2371 | * @sbal_idx: response queue index of SBAL to be processed | |
2372 | */ | |
564e1c86 | 2373 | void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx) |
bd63eaf4 | 2374 | { |
564e1c86 | 2375 | struct zfcp_adapter *adapter = qdio->adapter; |
706eca49 | 2376 | struct qdio_buffer *sbal = qdio->res_q[sbal_idx]; |
bd63eaf4 SS |
2377 | struct qdio_buffer_element *sbale; |
2378 | struct zfcp_fsf_req *fsf_req; | |
b6bd2fb9 | 2379 | unsigned long req_id; |
bd63eaf4 SS |
2380 | int idx; |
2381 | ||
2382 | for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) { | |
2383 | ||
2384 | sbale = &sbal->element[idx]; | |
2385 | req_id = (unsigned long) sbale->addr; | |
b6bd2fb9 | 2386 | fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id); |
bd63eaf4 | 2387 | |
339f4f4e | 2388 | if (!fsf_req) { |
bd63eaf4 SS |
2389 | /* |
2390 | * Unknown request means that we have potentially memory | |
2391 | * corruption and must stop the machine immediately. | |
2392 | */ | |
339f4f4e | 2393 | zfcp_qdio_siosl(adapter); |
bd63eaf4 SS |
2394 | panic("error: unknown req_id (%lx) on adapter %s.\n", |
2395 | req_id, dev_name(&adapter->ccw_device->dev)); | |
339f4f4e | 2396 | } |
bd63eaf4 | 2397 | |
bd63eaf4 SS |
2398 | zfcp_fsf_req_complete(fsf_req); |
2399 | ||
3ec90878 | 2400 | if (likely(sbale->eflags & SBAL_EFLAGS_LAST_ENTRY)) |
bd63eaf4 SS |
2401 | break; |
2402 | } | |
2403 | } |