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f1c3b0fc JS |
1 | /******************************************************************* |
2 | * This file is part of the Emulex Linux Device Driver for * | |
3 | * Fibre Channel Host Bus Adapters. * | |
4 | * Copyright (C) 2009 Emulex. All rights reserved. * | |
5 | * EMULEX and SLI are trademarks of Emulex. * | |
6 | * www.emulex.com * | |
7 | * * | |
8 | * This program is free software; you can redistribute it and/or * | |
9 | * modify it under the terms of version 2 of the GNU General * | |
10 | * Public License as published by the Free Software Foundation. * | |
11 | * This program is distributed in the hope that it will be useful. * | |
12 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * | |
13 | * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * | |
14 | * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * | |
15 | * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * | |
16 | * TO BE LEGALLY INVALID. See the GNU General Public License for * | |
17 | * more details, a copy of which can be found in the file COPYING * | |
18 | * included with this package. * | |
19 | *******************************************************************/ | |
20 | ||
21 | #include <linux/interrupt.h> | |
22 | #include <linux/mempool.h> | |
23 | #include <linux/pci.h> | |
24 | ||
25 | #include <scsi/scsi.h> | |
26 | #include <scsi/scsi_host.h> | |
27 | #include <scsi/scsi_transport_fc.h> | |
28 | #include <scsi/scsi_bsg_fc.h> | |
6a9c52cf | 29 | #include <scsi/fc/fc_fs.h> |
f1c3b0fc JS |
30 | |
31 | #include "lpfc_hw4.h" | |
32 | #include "lpfc_hw.h" | |
33 | #include "lpfc_sli.h" | |
34 | #include "lpfc_sli4.h" | |
35 | #include "lpfc_nl.h" | |
36 | #include "lpfc_disc.h" | |
37 | #include "lpfc_scsi.h" | |
38 | #include "lpfc.h" | |
39 | #include "lpfc_logmsg.h" | |
40 | #include "lpfc_crtn.h" | |
41 | #include "lpfc_vport.h" | |
42 | #include "lpfc_version.h" | |
43 | ||
44 | /** | |
45 | * lpfc_bsg_rport_ct - send a CT command from a bsg request | |
46 | * @job: fc_bsg_job to handle | |
47 | */ | |
48 | static int | |
49 | lpfc_bsg_rport_ct(struct fc_bsg_job *job) | |
50 | { | |
51 | struct Scsi_Host *shost = job->shost; | |
52 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; | |
53 | struct lpfc_hba *phba = vport->phba; | |
54 | struct lpfc_rport_data *rdata = job->rport->dd_data; | |
55 | struct lpfc_nodelist *ndlp = rdata->pnode; | |
56 | struct ulp_bde64 *bpl = NULL; | |
57 | uint32_t timeout; | |
58 | struct lpfc_iocbq *cmdiocbq = NULL; | |
59 | struct lpfc_iocbq *rspiocbq = NULL; | |
60 | IOCB_t *cmd; | |
61 | IOCB_t *rsp; | |
62 | struct lpfc_dmabuf *bmp = NULL; | |
63 | int request_nseg; | |
64 | int reply_nseg; | |
65 | struct scatterlist *sgel = NULL; | |
66 | int numbde; | |
67 | dma_addr_t busaddr; | |
68 | int rc = 0; | |
69 | ||
70 | /* in case no data is transferred */ | |
71 | job->reply->reply_payload_rcv_len = 0; | |
72 | ||
73 | if (!lpfc_nlp_get(ndlp)) { | |
74 | job->reply->result = -ENODEV; | |
75 | return 0; | |
76 | } | |
77 | ||
78 | if (ndlp->nlp_flag & NLP_ELS_SND_MASK) { | |
79 | rc = -ENODEV; | |
80 | goto free_ndlp_exit; | |
81 | } | |
82 | ||
83 | spin_lock_irq(shost->host_lock); | |
84 | cmdiocbq = lpfc_sli_get_iocbq(phba); | |
85 | if (!cmdiocbq) { | |
86 | rc = -ENOMEM; | |
87 | spin_unlock_irq(shost->host_lock); | |
88 | goto free_ndlp_exit; | |
89 | } | |
90 | cmd = &cmdiocbq->iocb; | |
91 | ||
92 | rspiocbq = lpfc_sli_get_iocbq(phba); | |
93 | if (!rspiocbq) { | |
94 | rc = -ENOMEM; | |
95 | goto free_cmdiocbq; | |
96 | } | |
97 | spin_unlock_irq(shost->host_lock); | |
98 | ||
99 | rsp = &rspiocbq->iocb; | |
100 | ||
101 | bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); | |
102 | if (!bmp) { | |
103 | rc = -ENOMEM; | |
104 | spin_lock_irq(shost->host_lock); | |
105 | goto free_rspiocbq; | |
106 | } | |
107 | ||
108 | spin_lock_irq(shost->host_lock); | |
109 | bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys); | |
110 | if (!bmp->virt) { | |
111 | rc = -ENOMEM; | |
112 | goto free_bmp; | |
113 | } | |
114 | spin_unlock_irq(shost->host_lock); | |
115 | ||
116 | INIT_LIST_HEAD(&bmp->list); | |
117 | bpl = (struct ulp_bde64 *) bmp->virt; | |
118 | ||
119 | request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list, | |
120 | job->request_payload.sg_cnt, DMA_TO_DEVICE); | |
121 | for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) { | |
122 | busaddr = sg_dma_address(sgel); | |
123 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
124 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
125 | bpl->tus.w = cpu_to_le32(bpl->tus.w); | |
126 | bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr)); | |
127 | bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr)); | |
128 | bpl++; | |
129 | } | |
130 | ||
131 | reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list, | |
132 | job->reply_payload.sg_cnt, DMA_FROM_DEVICE); | |
133 | for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) { | |
134 | busaddr = sg_dma_address(sgel); | |
135 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
136 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
137 | bpl->tus.w = cpu_to_le32(bpl->tus.w); | |
138 | bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr)); | |
139 | bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr)); | |
140 | bpl++; | |
141 | } | |
142 | ||
143 | cmd->un.genreq64.bdl.ulpIoTag32 = 0; | |
144 | cmd->un.genreq64.bdl.addrHigh = putPaddrHigh(bmp->phys); | |
145 | cmd->un.genreq64.bdl.addrLow = putPaddrLow(bmp->phys); | |
146 | cmd->un.genreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64; | |
147 | cmd->un.genreq64.bdl.bdeSize = | |
148 | (request_nseg + reply_nseg) * sizeof(struct ulp_bde64); | |
149 | cmd->ulpCommand = CMD_GEN_REQUEST64_CR; | |
150 | cmd->un.genreq64.w5.hcsw.Fctl = (SI | LA); | |
151 | cmd->un.genreq64.w5.hcsw.Dfctl = 0; | |
6a9c52cf JS |
152 | cmd->un.genreq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL; |
153 | cmd->un.genreq64.w5.hcsw.Type = FC_TYPE_CT; | |
f1c3b0fc JS |
154 | cmd->ulpBdeCount = 1; |
155 | cmd->ulpLe = 1; | |
156 | cmd->ulpClass = CLASS3; | |
157 | cmd->ulpContext = ndlp->nlp_rpi; | |
158 | cmd->ulpOwner = OWN_CHIP; | |
159 | cmdiocbq->vport = phba->pport; | |
160 | cmdiocbq->context1 = NULL; | |
161 | cmdiocbq->context2 = NULL; | |
162 | cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC; | |
163 | ||
164 | timeout = phba->fc_ratov * 2; | |
165 | job->dd_data = cmdiocbq; | |
166 | ||
167 | rc = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq, rspiocbq, | |
168 | timeout + LPFC_DRVR_TIMEOUT); | |
169 | ||
170 | if (rc != IOCB_TIMEDOUT) { | |
171 | pci_unmap_sg(phba->pcidev, job->request_payload.sg_list, | |
172 | job->request_payload.sg_cnt, DMA_TO_DEVICE); | |
173 | pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list, | |
174 | job->reply_payload.sg_cnt, DMA_FROM_DEVICE); | |
175 | } | |
176 | ||
177 | if (rc == IOCB_TIMEDOUT) { | |
178 | lpfc_sli_release_iocbq(phba, rspiocbq); | |
179 | rc = -EACCES; | |
180 | goto free_ndlp_exit; | |
181 | } | |
182 | ||
183 | if (rc != IOCB_SUCCESS) { | |
184 | rc = -EACCES; | |
185 | goto free_outdmp; | |
186 | } | |
187 | ||
188 | if (rsp->ulpStatus) { | |
189 | if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) { | |
190 | switch (rsp->un.ulpWord[4] & 0xff) { | |
191 | case IOERR_SEQUENCE_TIMEOUT: | |
192 | rc = -ETIMEDOUT; | |
193 | break; | |
194 | case IOERR_INVALID_RPI: | |
195 | rc = -EFAULT; | |
196 | break; | |
197 | default: | |
198 | rc = -EACCES; | |
199 | break; | |
200 | } | |
201 | goto free_outdmp; | |
202 | } | |
203 | } else | |
204 | job->reply->reply_payload_rcv_len = | |
205 | rsp->un.genreq64.bdl.bdeSize; | |
206 | ||
207 | free_outdmp: | |
208 | spin_lock_irq(shost->host_lock); | |
209 | lpfc_mbuf_free(phba, bmp->virt, bmp->phys); | |
210 | free_bmp: | |
211 | kfree(bmp); | |
212 | free_rspiocbq: | |
213 | lpfc_sli_release_iocbq(phba, rspiocbq); | |
214 | free_cmdiocbq: | |
215 | lpfc_sli_release_iocbq(phba, cmdiocbq); | |
216 | spin_unlock_irq(shost->host_lock); | |
217 | free_ndlp_exit: | |
218 | lpfc_nlp_put(ndlp); | |
219 | ||
220 | /* make error code available to userspace */ | |
221 | job->reply->result = rc; | |
222 | /* complete the job back to userspace */ | |
223 | job->job_done(job); | |
224 | ||
225 | return 0; | |
226 | } | |
227 | ||
228 | /** | |
229 | * lpfc_bsg_rport_els - send an ELS command from a bsg request | |
230 | * @job: fc_bsg_job to handle | |
231 | */ | |
232 | static int | |
233 | lpfc_bsg_rport_els(struct fc_bsg_job *job) | |
234 | { | |
235 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; | |
236 | struct lpfc_hba *phba = vport->phba; | |
237 | struct lpfc_rport_data *rdata = job->rport->dd_data; | |
238 | struct lpfc_nodelist *ndlp = rdata->pnode; | |
239 | ||
240 | uint32_t elscmd; | |
241 | uint32_t cmdsize; | |
242 | uint32_t rspsize; | |
243 | struct lpfc_iocbq *rspiocbq; | |
244 | struct lpfc_iocbq *cmdiocbq; | |
245 | IOCB_t *rsp; | |
246 | uint16_t rpi = 0; | |
247 | struct lpfc_dmabuf *pcmd; | |
248 | struct lpfc_dmabuf *prsp; | |
249 | struct lpfc_dmabuf *pbuflist = NULL; | |
250 | struct ulp_bde64 *bpl; | |
251 | int iocb_status; | |
252 | int request_nseg; | |
253 | int reply_nseg; | |
254 | struct scatterlist *sgel = NULL; | |
255 | int numbde; | |
256 | dma_addr_t busaddr; | |
257 | int rc = 0; | |
258 | ||
259 | /* in case no data is transferred */ | |
260 | job->reply->reply_payload_rcv_len = 0; | |
261 | ||
262 | if (!lpfc_nlp_get(ndlp)) { | |
263 | rc = -ENODEV; | |
264 | goto out; | |
265 | } | |
266 | ||
267 | elscmd = job->request->rqst_data.r_els.els_code; | |
268 | cmdsize = job->request_payload.payload_len; | |
269 | rspsize = job->reply_payload.payload_len; | |
270 | rspiocbq = lpfc_sli_get_iocbq(phba); | |
271 | if (!rspiocbq) { | |
272 | lpfc_nlp_put(ndlp); | |
273 | rc = -ENOMEM; | |
274 | goto out; | |
275 | } | |
276 | ||
277 | rsp = &rspiocbq->iocb; | |
278 | rpi = ndlp->nlp_rpi; | |
279 | ||
280 | cmdiocbq = lpfc_prep_els_iocb(phba->pport, 1, cmdsize, 0, ndlp, | |
281 | ndlp->nlp_DID, elscmd); | |
282 | ||
283 | if (!cmdiocbq) { | |
284 | lpfc_sli_release_iocbq(phba, rspiocbq); | |
285 | return -EIO; | |
286 | } | |
287 | ||
288 | job->dd_data = cmdiocbq; | |
289 | pcmd = (struct lpfc_dmabuf *) cmdiocbq->context2; | |
290 | prsp = (struct lpfc_dmabuf *) pcmd->list.next; | |
291 | ||
292 | lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys); | |
293 | kfree(pcmd); | |
294 | lpfc_mbuf_free(phba, prsp->virt, prsp->phys); | |
295 | kfree(prsp); | |
296 | cmdiocbq->context2 = NULL; | |
297 | ||
298 | pbuflist = (struct lpfc_dmabuf *) cmdiocbq->context3; | |
299 | bpl = (struct ulp_bde64 *) pbuflist->virt; | |
300 | ||
301 | request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list, | |
302 | job->request_payload.sg_cnt, DMA_TO_DEVICE); | |
303 | ||
304 | for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) { | |
305 | busaddr = sg_dma_address(sgel); | |
306 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
307 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
308 | bpl->tus.w = cpu_to_le32(bpl->tus.w); | |
309 | bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr)); | |
310 | bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr)); | |
311 | bpl++; | |
312 | } | |
313 | ||
314 | reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list, | |
315 | job->reply_payload.sg_cnt, DMA_FROM_DEVICE); | |
316 | for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) { | |
317 | busaddr = sg_dma_address(sgel); | |
318 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
319 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
320 | bpl->tus.w = cpu_to_le32(bpl->tus.w); | |
321 | bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr)); | |
322 | bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr)); | |
323 | bpl++; | |
324 | } | |
325 | ||
326 | cmdiocbq->iocb.un.elsreq64.bdl.bdeSize = | |
327 | (request_nseg + reply_nseg) * sizeof(struct ulp_bde64); | |
328 | cmdiocbq->iocb.ulpContext = rpi; | |
329 | cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC; | |
330 | cmdiocbq->context1 = NULL; | |
331 | cmdiocbq->context2 = NULL; | |
332 | ||
333 | iocb_status = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq, | |
334 | rspiocbq, (phba->fc_ratov * 2) | |
335 | + LPFC_DRVR_TIMEOUT); | |
336 | ||
337 | /* release the new ndlp once the iocb completes */ | |
338 | lpfc_nlp_put(ndlp); | |
339 | if (iocb_status != IOCB_TIMEDOUT) { | |
340 | pci_unmap_sg(phba->pcidev, job->request_payload.sg_list, | |
341 | job->request_payload.sg_cnt, DMA_TO_DEVICE); | |
342 | pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list, | |
343 | job->reply_payload.sg_cnt, DMA_FROM_DEVICE); | |
344 | } | |
345 | ||
346 | if (iocb_status == IOCB_SUCCESS) { | |
347 | if (rsp->ulpStatus == IOSTAT_SUCCESS) { | |
348 | job->reply->reply_payload_rcv_len = | |
349 | rsp->un.elsreq64.bdl.bdeSize; | |
350 | rc = 0; | |
351 | } else if (rsp->ulpStatus == IOSTAT_LS_RJT) { | |
352 | struct fc_bsg_ctels_reply *els_reply; | |
353 | /* LS_RJT data returned in word 4 */ | |
354 | uint8_t *rjt_data = (uint8_t *)&rsp->un.ulpWord[4]; | |
355 | ||
356 | els_reply = &job->reply->reply_data.ctels_reply; | |
357 | job->reply->result = 0; | |
358 | els_reply->status = FC_CTELS_STATUS_REJECT; | |
359 | els_reply->rjt_data.action = rjt_data[0]; | |
360 | els_reply->rjt_data.reason_code = rjt_data[1]; | |
361 | els_reply->rjt_data.reason_explanation = rjt_data[2]; | |
362 | els_reply->rjt_data.vendor_unique = rjt_data[3]; | |
363 | } else | |
364 | rc = -EIO; | |
365 | } else | |
366 | rc = -EIO; | |
367 | ||
368 | if (iocb_status != IOCB_TIMEDOUT) | |
369 | lpfc_els_free_iocb(phba, cmdiocbq); | |
370 | ||
371 | lpfc_sli_release_iocbq(phba, rspiocbq); | |
372 | ||
373 | out: | |
374 | /* make error code available to userspace */ | |
375 | job->reply->result = rc; | |
376 | /* complete the job back to userspace */ | |
377 | job->job_done(job); | |
378 | ||
379 | return 0; | |
380 | } | |
381 | ||
382 | struct lpfc_ct_event { | |
383 | struct list_head node; | |
384 | int ref; | |
385 | wait_queue_head_t wq; | |
386 | ||
387 | /* Event type and waiter identifiers */ | |
388 | uint32_t type_mask; | |
389 | uint32_t req_id; | |
390 | uint32_t reg_id; | |
391 | ||
392 | /* next two flags are here for the auto-delete logic */ | |
393 | unsigned long wait_time_stamp; | |
394 | int waiting; | |
395 | ||
396 | /* seen and not seen events */ | |
397 | struct list_head events_to_get; | |
398 | struct list_head events_to_see; | |
399 | }; | |
400 | ||
401 | struct event_data { | |
402 | struct list_head node; | |
403 | uint32_t type; | |
404 | uint32_t immed_dat; | |
405 | void *data; | |
406 | uint32_t len; | |
407 | }; | |
408 | ||
409 | static struct lpfc_ct_event * | |
410 | lpfc_ct_event_new(int ev_reg_id, uint32_t ev_req_id) | |
411 | { | |
412 | struct lpfc_ct_event *evt = kzalloc(sizeof(*evt), GFP_KERNEL); | |
413 | if (!evt) | |
414 | return NULL; | |
415 | ||
416 | INIT_LIST_HEAD(&evt->events_to_get); | |
417 | INIT_LIST_HEAD(&evt->events_to_see); | |
418 | evt->req_id = ev_req_id; | |
419 | evt->reg_id = ev_reg_id; | |
420 | evt->wait_time_stamp = jiffies; | |
421 | init_waitqueue_head(&evt->wq); | |
422 | ||
423 | return evt; | |
424 | } | |
425 | ||
426 | static void | |
427 | lpfc_ct_event_free(struct lpfc_ct_event *evt) | |
428 | { | |
429 | struct event_data *ed; | |
430 | ||
431 | list_del(&evt->node); | |
432 | ||
433 | while (!list_empty(&evt->events_to_get)) { | |
434 | ed = list_entry(evt->events_to_get.next, typeof(*ed), node); | |
435 | list_del(&ed->node); | |
436 | kfree(ed->data); | |
437 | kfree(ed); | |
438 | } | |
439 | ||
440 | while (!list_empty(&evt->events_to_see)) { | |
441 | ed = list_entry(evt->events_to_see.next, typeof(*ed), node); | |
442 | list_del(&ed->node); | |
443 | kfree(ed->data); | |
444 | kfree(ed); | |
445 | } | |
446 | ||
447 | kfree(evt); | |
448 | } | |
449 | ||
450 | static inline void | |
451 | lpfc_ct_event_ref(struct lpfc_ct_event *evt) | |
452 | { | |
453 | evt->ref++; | |
454 | } | |
455 | ||
456 | static inline void | |
457 | lpfc_ct_event_unref(struct lpfc_ct_event *evt) | |
458 | { | |
459 | if (--evt->ref < 0) | |
460 | lpfc_ct_event_free(evt); | |
461 | } | |
462 | ||
463 | #define SLI_CT_ELX_LOOPBACK 0x10 | |
464 | ||
465 | enum ELX_LOOPBACK_CMD { | |
466 | ELX_LOOPBACK_XRI_SETUP, | |
467 | ELX_LOOPBACK_DATA, | |
468 | }; | |
469 | ||
470 | /** | |
471 | * lpfc_bsg_ct_unsol_event - process an unsolicited CT command | |
472 | * @phba: | |
473 | * @pring: | |
474 | * @piocbq: | |
475 | * | |
476 | * This function is called when an unsolicited CT command is received. It | |
477 | * forwards the event to any processes registerd to receive CT events. | |
478 | */ | |
479 | void | |
480 | lpfc_bsg_ct_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, | |
481 | struct lpfc_iocbq *piocbq) | |
482 | { | |
483 | uint32_t evt_req_id = 0; | |
484 | uint32_t cmd; | |
485 | uint32_t len; | |
486 | struct lpfc_dmabuf *dmabuf = NULL; | |
487 | struct lpfc_ct_event *evt; | |
488 | struct event_data *evt_dat = NULL; | |
489 | struct lpfc_iocbq *iocbq; | |
490 | size_t offset = 0; | |
491 | struct list_head head; | |
492 | struct ulp_bde64 *bde; | |
493 | dma_addr_t dma_addr; | |
494 | int i; | |
495 | struct lpfc_dmabuf *bdeBuf1 = piocbq->context2; | |
496 | struct lpfc_dmabuf *bdeBuf2 = piocbq->context3; | |
497 | struct lpfc_hbq_entry *hbqe; | |
498 | struct lpfc_sli_ct_request *ct_req; | |
499 | ||
500 | INIT_LIST_HEAD(&head); | |
501 | list_add_tail(&head, &piocbq->list); | |
502 | ||
503 | if (piocbq->iocb.ulpBdeCount == 0 || | |
504 | piocbq->iocb.un.cont64[0].tus.f.bdeSize == 0) | |
505 | goto error_ct_unsol_exit; | |
506 | ||
507 | if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) | |
508 | dmabuf = bdeBuf1; | |
509 | else { | |
510 | dma_addr = getPaddr(piocbq->iocb.un.cont64[0].addrHigh, | |
511 | piocbq->iocb.un.cont64[0].addrLow); | |
512 | dmabuf = lpfc_sli_ringpostbuf_get(phba, pring, dma_addr); | |
513 | } | |
514 | ||
515 | ct_req = (struct lpfc_sli_ct_request *)dmabuf->virt; | |
516 | evt_req_id = ct_req->FsType; | |
517 | cmd = ct_req->CommandResponse.bits.CmdRsp; | |
518 | len = ct_req->CommandResponse.bits.Size; | |
519 | if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) | |
520 | lpfc_sli_ringpostbuf_put(phba, pring, dmabuf); | |
521 | ||
522 | mutex_lock(&phba->ct_event_mutex); | |
523 | list_for_each_entry(evt, &phba->ct_ev_waiters, node) { | |
524 | if (evt->req_id != evt_req_id) | |
525 | continue; | |
526 | ||
527 | lpfc_ct_event_ref(evt); | |
528 | ||
529 | evt_dat = kzalloc(sizeof(*evt_dat), GFP_KERNEL); | |
530 | if (!evt_dat) { | |
531 | lpfc_ct_event_unref(evt); | |
532 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
533 | "2614 Memory allocation failed for " | |
534 | "CT event\n"); | |
535 | break; | |
536 | } | |
537 | ||
538 | mutex_unlock(&phba->ct_event_mutex); | |
539 | ||
540 | if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { | |
541 | /* take accumulated byte count from the last iocbq */ | |
542 | iocbq = list_entry(head.prev, typeof(*iocbq), list); | |
543 | evt_dat->len = iocbq->iocb.unsli3.rcvsli3.acc_len; | |
544 | } else { | |
545 | list_for_each_entry(iocbq, &head, list) { | |
546 | for (i = 0; i < iocbq->iocb.ulpBdeCount; i++) | |
547 | evt_dat->len += | |
548 | iocbq->iocb.un.cont64[i].tus.f.bdeSize; | |
549 | } | |
550 | } | |
551 | ||
552 | evt_dat->data = kzalloc(evt_dat->len, GFP_KERNEL); | |
553 | if (!evt_dat->data) { | |
554 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
555 | "2615 Memory allocation failed for " | |
556 | "CT event data, size %d\n", | |
557 | evt_dat->len); | |
558 | kfree(evt_dat); | |
559 | mutex_lock(&phba->ct_event_mutex); | |
560 | lpfc_ct_event_unref(evt); | |
561 | mutex_unlock(&phba->ct_event_mutex); | |
562 | goto error_ct_unsol_exit; | |
563 | } | |
564 | ||
565 | list_for_each_entry(iocbq, &head, list) { | |
566 | if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { | |
567 | bdeBuf1 = iocbq->context2; | |
568 | bdeBuf2 = iocbq->context3; | |
569 | } | |
570 | for (i = 0; i < iocbq->iocb.ulpBdeCount; i++) { | |
571 | int size = 0; | |
572 | if (phba->sli3_options & | |
573 | LPFC_SLI3_HBQ_ENABLED) { | |
574 | if (i == 0) { | |
575 | hbqe = (struct lpfc_hbq_entry *) | |
576 | &iocbq->iocb.un.ulpWord[0]; | |
577 | size = hbqe->bde.tus.f.bdeSize; | |
578 | dmabuf = bdeBuf1; | |
579 | } else if (i == 1) { | |
580 | hbqe = (struct lpfc_hbq_entry *) | |
581 | &iocbq->iocb.unsli3. | |
582 | sli3Words[4]; | |
583 | size = hbqe->bde.tus.f.bdeSize; | |
584 | dmabuf = bdeBuf2; | |
585 | } | |
586 | if ((offset + size) > evt_dat->len) | |
587 | size = evt_dat->len - offset; | |
588 | } else { | |
589 | size = iocbq->iocb.un.cont64[i]. | |
590 | tus.f.bdeSize; | |
591 | bde = &iocbq->iocb.un.cont64[i]; | |
592 | dma_addr = getPaddr(bde->addrHigh, | |
593 | bde->addrLow); | |
594 | dmabuf = lpfc_sli_ringpostbuf_get(phba, | |
595 | pring, dma_addr); | |
596 | } | |
597 | if (!dmabuf) { | |
598 | lpfc_printf_log(phba, KERN_ERR, | |
599 | LOG_LIBDFC, "2616 No dmabuf " | |
600 | "found for iocbq 0x%p\n", | |
601 | iocbq); | |
602 | kfree(evt_dat->data); | |
603 | kfree(evt_dat); | |
604 | mutex_lock(&phba->ct_event_mutex); | |
605 | lpfc_ct_event_unref(evt); | |
606 | mutex_unlock(&phba->ct_event_mutex); | |
607 | goto error_ct_unsol_exit; | |
608 | } | |
609 | memcpy((char *)(evt_dat->data) + offset, | |
610 | dmabuf->virt, size); | |
611 | offset += size; | |
612 | if (evt_req_id != SLI_CT_ELX_LOOPBACK && | |
613 | !(phba->sli3_options & | |
614 | LPFC_SLI3_HBQ_ENABLED)) { | |
615 | lpfc_sli_ringpostbuf_put(phba, pring, | |
616 | dmabuf); | |
617 | } else { | |
618 | switch (cmd) { | |
619 | case ELX_LOOPBACK_XRI_SETUP: | |
620 | if (!(phba->sli3_options & | |
621 | LPFC_SLI3_HBQ_ENABLED)) | |
622 | lpfc_post_buffer(phba, | |
623 | pring, | |
624 | 1); | |
625 | else | |
626 | lpfc_in_buf_free(phba, | |
627 | dmabuf); | |
628 | break; | |
629 | default: | |
630 | if (!(phba->sli3_options & | |
631 | LPFC_SLI3_HBQ_ENABLED)) | |
632 | lpfc_post_buffer(phba, | |
633 | pring, | |
634 | 1); | |
635 | break; | |
636 | } | |
637 | } | |
638 | } | |
639 | } | |
640 | ||
641 | mutex_lock(&phba->ct_event_mutex); | |
642 | if (phba->sli_rev == LPFC_SLI_REV4) { | |
643 | evt_dat->immed_dat = phba->ctx_idx; | |
644 | phba->ctx_idx = (phba->ctx_idx + 1) % 64; | |
645 | phba->ct_ctx[evt_dat->immed_dat].oxid = | |
646 | piocbq->iocb.ulpContext; | |
647 | phba->ct_ctx[evt_dat->immed_dat].SID = | |
648 | piocbq->iocb.un.rcvels.remoteID; | |
649 | } else | |
650 | evt_dat->immed_dat = piocbq->iocb.ulpContext; | |
651 | ||
652 | evt_dat->type = FC_REG_CT_EVENT; | |
653 | list_add(&evt_dat->node, &evt->events_to_see); | |
654 | wake_up_interruptible(&evt->wq); | |
655 | lpfc_ct_event_unref(evt); | |
656 | if (evt_req_id == SLI_CT_ELX_LOOPBACK) | |
657 | break; | |
658 | } | |
659 | mutex_unlock(&phba->ct_event_mutex); | |
660 | ||
661 | error_ct_unsol_exit: | |
662 | if (!list_empty(&head)) | |
663 | list_del(&head); | |
664 | ||
665 | return; | |
666 | } | |
667 | ||
668 | /** | |
669 | * lpfc_bsg_set_event - process a SET_EVENT bsg vendor command | |
670 | * @job: SET_EVENT fc_bsg_job | |
671 | */ | |
672 | static int | |
673 | lpfc_bsg_set_event(struct fc_bsg_job *job) | |
674 | { | |
675 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; | |
676 | struct lpfc_hba *phba = vport->phba; | |
677 | struct set_ct_event *event_req; | |
678 | struct lpfc_ct_event *evt; | |
679 | int rc = 0; | |
680 | ||
681 | if (job->request_len < | |
682 | sizeof(struct fc_bsg_request) + sizeof(struct set_ct_event)) { | |
683 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
684 | "2612 Received SET_CT_EVENT below minimum " | |
685 | "size\n"); | |
686 | return -EINVAL; | |
687 | } | |
688 | ||
689 | event_req = (struct set_ct_event *) | |
690 | job->request->rqst_data.h_vendor.vendor_cmd; | |
691 | ||
692 | mutex_lock(&phba->ct_event_mutex); | |
693 | list_for_each_entry(evt, &phba->ct_ev_waiters, node) { | |
694 | if (evt->reg_id == event_req->ev_reg_id) { | |
695 | lpfc_ct_event_ref(evt); | |
696 | evt->wait_time_stamp = jiffies; | |
697 | break; | |
698 | } | |
699 | } | |
700 | mutex_unlock(&phba->ct_event_mutex); | |
701 | ||
702 | if (&evt->node == &phba->ct_ev_waiters) { | |
703 | /* no event waiting struct yet - first call */ | |
704 | evt = lpfc_ct_event_new(event_req->ev_reg_id, | |
705 | event_req->ev_req_id); | |
706 | if (!evt) { | |
707 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
708 | "2617 Failed allocation of event " | |
709 | "waiter\n"); | |
710 | return -ENOMEM; | |
711 | } | |
712 | ||
713 | mutex_lock(&phba->ct_event_mutex); | |
714 | list_add(&evt->node, &phba->ct_ev_waiters); | |
715 | lpfc_ct_event_ref(evt); | |
716 | mutex_unlock(&phba->ct_event_mutex); | |
717 | } | |
718 | ||
719 | evt->waiting = 1; | |
720 | if (wait_event_interruptible(evt->wq, | |
721 | !list_empty(&evt->events_to_see))) { | |
722 | mutex_lock(&phba->ct_event_mutex); | |
723 | lpfc_ct_event_unref(evt); /* release ref */ | |
724 | lpfc_ct_event_unref(evt); /* delete */ | |
725 | mutex_unlock(&phba->ct_event_mutex); | |
726 | rc = -EINTR; | |
727 | goto set_event_out; | |
728 | } | |
729 | ||
730 | evt->wait_time_stamp = jiffies; | |
731 | evt->waiting = 0; | |
732 | ||
733 | mutex_lock(&phba->ct_event_mutex); | |
734 | list_move(evt->events_to_see.prev, &evt->events_to_get); | |
735 | lpfc_ct_event_unref(evt); /* release ref */ | |
736 | mutex_unlock(&phba->ct_event_mutex); | |
737 | ||
738 | set_event_out: | |
739 | /* set_event carries no reply payload */ | |
740 | job->reply->reply_payload_rcv_len = 0; | |
741 | /* make error code available to userspace */ | |
742 | job->reply->result = rc; | |
743 | /* complete the job back to userspace */ | |
744 | job->job_done(job); | |
745 | ||
746 | return 0; | |
747 | } | |
748 | ||
749 | /** | |
750 | * lpfc_bsg_get_event - process a GET_EVENT bsg vendor command | |
751 | * @job: GET_EVENT fc_bsg_job | |
752 | */ | |
753 | static int | |
754 | lpfc_bsg_get_event(struct fc_bsg_job *job) | |
755 | { | |
756 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; | |
757 | struct lpfc_hba *phba = vport->phba; | |
758 | struct get_ct_event *event_req; | |
759 | struct get_ct_event_reply *event_reply; | |
760 | struct lpfc_ct_event *evt; | |
761 | struct event_data *evt_dat = NULL; | |
762 | int rc = 0; | |
763 | ||
764 | if (job->request_len < | |
765 | sizeof(struct fc_bsg_request) + sizeof(struct get_ct_event)) { | |
766 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
767 | "2613 Received GET_CT_EVENT request below " | |
768 | "minimum size\n"); | |
769 | return -EINVAL; | |
770 | } | |
771 | ||
772 | event_req = (struct get_ct_event *) | |
773 | job->request->rqst_data.h_vendor.vendor_cmd; | |
774 | ||
775 | event_reply = (struct get_ct_event_reply *) | |
776 | job->reply->reply_data.vendor_reply.vendor_rsp; | |
777 | ||
778 | mutex_lock(&phba->ct_event_mutex); | |
779 | list_for_each_entry(evt, &phba->ct_ev_waiters, node) { | |
780 | if (evt->reg_id == event_req->ev_reg_id) { | |
781 | if (list_empty(&evt->events_to_get)) | |
782 | break; | |
783 | lpfc_ct_event_ref(evt); | |
784 | evt->wait_time_stamp = jiffies; | |
785 | evt_dat = list_entry(evt->events_to_get.prev, | |
786 | struct event_data, node); | |
787 | list_del(&evt_dat->node); | |
788 | break; | |
789 | } | |
790 | } | |
791 | mutex_unlock(&phba->ct_event_mutex); | |
792 | ||
793 | if (!evt_dat) { | |
794 | job->reply->reply_payload_rcv_len = 0; | |
795 | rc = -ENOENT; | |
796 | goto error_get_event_exit; | |
797 | } | |
798 | ||
799 | if (evt_dat->len > job->reply_payload.payload_len) { | |
800 | evt_dat->len = job->reply_payload.payload_len; | |
801 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
802 | "2618 Truncated event data at %d " | |
803 | "bytes\n", | |
804 | job->reply_payload.payload_len); | |
805 | } | |
806 | ||
807 | event_reply->immed_data = evt_dat->immed_dat; | |
808 | ||
809 | if (evt_dat->len > 0) | |
810 | job->reply->reply_payload_rcv_len = | |
811 | sg_copy_from_buffer(job->reply_payload.sg_list, | |
812 | job->reply_payload.sg_cnt, | |
813 | evt_dat->data, evt_dat->len); | |
814 | else | |
815 | job->reply->reply_payload_rcv_len = 0; | |
816 | rc = 0; | |
817 | ||
818 | if (evt_dat) | |
819 | kfree(evt_dat->data); | |
820 | kfree(evt_dat); | |
821 | mutex_lock(&phba->ct_event_mutex); | |
822 | lpfc_ct_event_unref(evt); | |
823 | mutex_unlock(&phba->ct_event_mutex); | |
824 | ||
825 | error_get_event_exit: | |
826 | /* make error code available to userspace */ | |
827 | job->reply->result = rc; | |
828 | /* complete the job back to userspace */ | |
829 | job->job_done(job); | |
830 | ||
831 | return rc; | |
832 | } | |
833 | ||
834 | /** | |
835 | * lpfc_bsg_hst_vendor - process a vendor-specific fc_bsg_job | |
836 | * @job: fc_bsg_job to handle | |
837 | */ | |
838 | static int | |
839 | lpfc_bsg_hst_vendor(struct fc_bsg_job *job) | |
840 | { | |
841 | int command = job->request->rqst_data.h_vendor.vendor_cmd[0]; | |
842 | ||
843 | switch (command) { | |
844 | case LPFC_BSG_VENDOR_SET_CT_EVENT: | |
845 | return lpfc_bsg_set_event(job); | |
846 | break; | |
847 | ||
848 | case LPFC_BSG_VENDOR_GET_CT_EVENT: | |
849 | return lpfc_bsg_get_event(job); | |
850 | break; | |
851 | ||
852 | default: | |
853 | return -EINVAL; | |
854 | } | |
855 | } | |
856 | ||
857 | /** | |
858 | * lpfc_bsg_request - handle a bsg request from the FC transport | |
859 | * @job: fc_bsg_job to handle | |
860 | */ | |
861 | int | |
862 | lpfc_bsg_request(struct fc_bsg_job *job) | |
863 | { | |
864 | uint32_t msgcode; | |
865 | int rc = -EINVAL; | |
866 | ||
867 | msgcode = job->request->msgcode; | |
868 | ||
869 | switch (msgcode) { | |
870 | case FC_BSG_HST_VENDOR: | |
871 | rc = lpfc_bsg_hst_vendor(job); | |
872 | break; | |
873 | case FC_BSG_RPT_ELS: | |
874 | rc = lpfc_bsg_rport_els(job); | |
875 | break; | |
876 | case FC_BSG_RPT_CT: | |
877 | rc = lpfc_bsg_rport_ct(job); | |
878 | break; | |
879 | default: | |
880 | break; | |
881 | } | |
882 | ||
883 | return rc; | |
884 | } | |
885 | ||
886 | /** | |
887 | * lpfc_bsg_timeout - handle timeout of a bsg request from the FC transport | |
888 | * @job: fc_bsg_job that has timed out | |
889 | * | |
890 | * This function just aborts the job's IOCB. The aborted IOCB will return to | |
891 | * the waiting function which will handle passing the error back to userspace | |
892 | */ | |
893 | int | |
894 | lpfc_bsg_timeout(struct fc_bsg_job *job) | |
895 | { | |
896 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; | |
897 | struct lpfc_hba *phba = vport->phba; | |
898 | struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)job->dd_data; | |
899 | struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; | |
900 | ||
901 | if (cmdiocb) | |
902 | lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb); | |
903 | ||
904 | return 0; | |
905 | } |