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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. * | |
4fede78f | 4 | * Copyright (C) 2009-2010 Emulex. All rights reserved. * |
f1c3b0fc JS |
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> | |
277e76f1 | 24 | #include <linux/delay.h> |
f1c3b0fc JS |
25 | |
26 | #include <scsi/scsi.h> | |
27 | #include <scsi/scsi_host.h> | |
28 | #include <scsi/scsi_transport_fc.h> | |
29 | #include <scsi/scsi_bsg_fc.h> | |
6a9c52cf | 30 | #include <scsi/fc/fc_fs.h> |
f1c3b0fc JS |
31 | |
32 | #include "lpfc_hw4.h" | |
33 | #include "lpfc_hw.h" | |
34 | #include "lpfc_sli.h" | |
35 | #include "lpfc_sli4.h" | |
36 | #include "lpfc_nl.h" | |
4fede78f | 37 | #include "lpfc_bsg.h" |
f1c3b0fc JS |
38 | #include "lpfc_disc.h" |
39 | #include "lpfc_scsi.h" | |
40 | #include "lpfc.h" | |
41 | #include "lpfc_logmsg.h" | |
42 | #include "lpfc_crtn.h" | |
43 | #include "lpfc_vport.h" | |
44 | #include "lpfc_version.h" | |
45 | ||
4cc0e56e JS |
46 | struct lpfc_bsg_event { |
47 | struct list_head node; | |
48 | struct kref kref; | |
49 | wait_queue_head_t wq; | |
50 | ||
51 | /* Event type and waiter identifiers */ | |
52 | uint32_t type_mask; | |
53 | uint32_t req_id; | |
54 | uint32_t reg_id; | |
55 | ||
56 | /* next two flags are here for the auto-delete logic */ | |
57 | unsigned long wait_time_stamp; | |
58 | int waiting; | |
59 | ||
60 | /* seen and not seen events */ | |
61 | struct list_head events_to_get; | |
62 | struct list_head events_to_see; | |
63 | ||
64 | /* job waiting for this event to finish */ | |
65 | struct fc_bsg_job *set_job; | |
66 | }; | |
67 | ||
68 | struct lpfc_bsg_iocb { | |
69 | struct lpfc_iocbq *cmdiocbq; | |
70 | struct lpfc_iocbq *rspiocbq; | |
71 | struct lpfc_dmabuf *bmp; | |
72 | struct lpfc_nodelist *ndlp; | |
73 | ||
74 | /* job waiting for this iocb to finish */ | |
75 | struct fc_bsg_job *set_job; | |
76 | }; | |
77 | ||
3b5dd52a JS |
78 | struct lpfc_bsg_mbox { |
79 | LPFC_MBOXQ_t *pmboxq; | |
80 | MAILBOX_t *mb; | |
81 | ||
82 | /* job waiting for this mbox command to finish */ | |
83 | struct fc_bsg_job *set_job; | |
84 | }; | |
85 | ||
4cc0e56e JS |
86 | #define TYPE_EVT 1 |
87 | #define TYPE_IOCB 2 | |
3b5dd52a | 88 | #define TYPE_MBOX 3 |
4cc0e56e JS |
89 | struct bsg_job_data { |
90 | uint32_t type; | |
91 | union { | |
92 | struct lpfc_bsg_event *evt; | |
93 | struct lpfc_bsg_iocb iocb; | |
3b5dd52a | 94 | struct lpfc_bsg_mbox mbox; |
4cc0e56e JS |
95 | } context_un; |
96 | }; | |
97 | ||
98 | struct event_data { | |
99 | struct list_head node; | |
100 | uint32_t type; | |
101 | uint32_t immed_dat; | |
102 | void *data; | |
103 | uint32_t len; | |
104 | }; | |
105 | ||
3b5dd52a | 106 | #define BUF_SZ_4K 4096 |
4cc0e56e JS |
107 | #define SLI_CT_ELX_LOOPBACK 0x10 |
108 | ||
109 | enum ELX_LOOPBACK_CMD { | |
110 | ELX_LOOPBACK_XRI_SETUP, | |
111 | ELX_LOOPBACK_DATA, | |
112 | }; | |
113 | ||
3b5dd52a JS |
114 | #define ELX_LOOPBACK_HEADER_SZ \ |
115 | (size_t)(&((struct lpfc_sli_ct_request *)NULL)->un) | |
116 | ||
4cc0e56e JS |
117 | struct lpfc_dmabufext { |
118 | struct lpfc_dmabuf dma; | |
119 | uint32_t size; | |
120 | uint32_t flag; | |
121 | }; | |
122 | ||
123 | /** | |
124 | * lpfc_bsg_send_mgmt_cmd_cmp - lpfc_bsg_send_mgmt_cmd's completion handler | |
125 | * @phba: Pointer to HBA context object. | |
126 | * @cmdiocbq: Pointer to command iocb. | |
127 | * @rspiocbq: Pointer to response iocb. | |
128 | * | |
129 | * This function is the completion handler for iocbs issued using | |
130 | * lpfc_bsg_send_mgmt_cmd function. This function is called by the | |
131 | * ring event handler function without any lock held. This function | |
132 | * can be called from both worker thread context and interrupt | |
133 | * context. This function also can be called from another thread which | |
134 | * cleans up the SLI layer objects. | |
135 | * This function copies the contents of the response iocb to the | |
136 | * response iocb memory object provided by the caller of | |
137 | * lpfc_sli_issue_iocb_wait and then wakes up the thread which | |
138 | * sleeps for the iocb completion. | |
139 | **/ | |
140 | static void | |
141 | lpfc_bsg_send_mgmt_cmd_cmp(struct lpfc_hba *phba, | |
142 | struct lpfc_iocbq *cmdiocbq, | |
143 | struct lpfc_iocbq *rspiocbq) | |
144 | { | |
145 | unsigned long iflags; | |
146 | struct bsg_job_data *dd_data; | |
147 | struct fc_bsg_job *job; | |
148 | IOCB_t *rsp; | |
149 | struct lpfc_dmabuf *bmp; | |
150 | struct lpfc_nodelist *ndlp; | |
151 | struct lpfc_bsg_iocb *iocb; | |
152 | unsigned long flags; | |
153 | int rc = 0; | |
154 | ||
155 | spin_lock_irqsave(&phba->ct_ev_lock, flags); | |
156 | dd_data = cmdiocbq->context1; | |
157 | if (!dd_data) { | |
158 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); | |
159 | return; | |
160 | } | |
161 | ||
162 | iocb = &dd_data->context_un.iocb; | |
163 | job = iocb->set_job; | |
164 | job->dd_data = NULL; /* so timeout handler does not reply */ | |
165 | ||
166 | spin_lock_irqsave(&phba->hbalock, iflags); | |
167 | cmdiocbq->iocb_flag |= LPFC_IO_WAKE; | |
168 | if (cmdiocbq->context2 && rspiocbq) | |
169 | memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb, | |
170 | &rspiocbq->iocb, sizeof(IOCB_t)); | |
171 | spin_unlock_irqrestore(&phba->hbalock, iflags); | |
172 | ||
173 | bmp = iocb->bmp; | |
174 | rspiocbq = iocb->rspiocbq; | |
175 | rsp = &rspiocbq->iocb; | |
176 | ndlp = iocb->ndlp; | |
177 | ||
178 | pci_unmap_sg(phba->pcidev, job->request_payload.sg_list, | |
179 | job->request_payload.sg_cnt, DMA_TO_DEVICE); | |
180 | pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list, | |
181 | job->reply_payload.sg_cnt, DMA_FROM_DEVICE); | |
182 | ||
183 | if (rsp->ulpStatus) { | |
184 | if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) { | |
185 | switch (rsp->un.ulpWord[4] & 0xff) { | |
186 | case IOERR_SEQUENCE_TIMEOUT: | |
187 | rc = -ETIMEDOUT; | |
188 | break; | |
189 | case IOERR_INVALID_RPI: | |
190 | rc = -EFAULT; | |
191 | break; | |
192 | default: | |
193 | rc = -EACCES; | |
194 | break; | |
195 | } | |
196 | } else | |
197 | rc = -EACCES; | |
198 | } else | |
199 | job->reply->reply_payload_rcv_len = | |
200 | rsp->un.genreq64.bdl.bdeSize; | |
201 | ||
202 | lpfc_mbuf_free(phba, bmp->virt, bmp->phys); | |
203 | lpfc_sli_release_iocbq(phba, rspiocbq); | |
204 | lpfc_sli_release_iocbq(phba, cmdiocbq); | |
205 | lpfc_nlp_put(ndlp); | |
206 | kfree(bmp); | |
207 | kfree(dd_data); | |
208 | /* make error code available to userspace */ | |
209 | job->reply->result = rc; | |
210 | /* complete the job back to userspace */ | |
211 | job->job_done(job); | |
212 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); | |
213 | return; | |
214 | } | |
215 | ||
f1c3b0fc | 216 | /** |
4cc0e56e | 217 | * lpfc_bsg_send_mgmt_cmd - send a CT command from a bsg request |
f1c3b0fc | 218 | * @job: fc_bsg_job to handle |
3b5dd52a | 219 | **/ |
f1c3b0fc | 220 | static int |
4cc0e56e | 221 | lpfc_bsg_send_mgmt_cmd(struct fc_bsg_job *job) |
f1c3b0fc | 222 | { |
f1c3b0fc JS |
223 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; |
224 | struct lpfc_hba *phba = vport->phba; | |
225 | struct lpfc_rport_data *rdata = job->rport->dd_data; | |
226 | struct lpfc_nodelist *ndlp = rdata->pnode; | |
227 | struct ulp_bde64 *bpl = NULL; | |
228 | uint32_t timeout; | |
229 | struct lpfc_iocbq *cmdiocbq = NULL; | |
230 | struct lpfc_iocbq *rspiocbq = NULL; | |
231 | IOCB_t *cmd; | |
232 | IOCB_t *rsp; | |
233 | struct lpfc_dmabuf *bmp = NULL; | |
234 | int request_nseg; | |
235 | int reply_nseg; | |
236 | struct scatterlist *sgel = NULL; | |
237 | int numbde; | |
238 | dma_addr_t busaddr; | |
4cc0e56e JS |
239 | struct bsg_job_data *dd_data; |
240 | uint32_t creg_val; | |
f1c3b0fc JS |
241 | int rc = 0; |
242 | ||
243 | /* in case no data is transferred */ | |
244 | job->reply->reply_payload_rcv_len = 0; | |
245 | ||
4cc0e56e JS |
246 | /* allocate our bsg tracking structure */ |
247 | dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL); | |
248 | if (!dd_data) { | |
249 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
250 | "2733 Failed allocation of dd_data\n"); | |
251 | rc = -ENOMEM; | |
252 | goto no_dd_data; | |
253 | } | |
254 | ||
f1c3b0fc | 255 | if (!lpfc_nlp_get(ndlp)) { |
4cc0e56e JS |
256 | rc = -ENODEV; |
257 | goto no_ndlp; | |
258 | } | |
259 | ||
260 | bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); | |
261 | if (!bmp) { | |
262 | rc = -ENOMEM; | |
263 | goto free_ndlp; | |
f1c3b0fc JS |
264 | } |
265 | ||
266 | if (ndlp->nlp_flag & NLP_ELS_SND_MASK) { | |
267 | rc = -ENODEV; | |
4cc0e56e | 268 | goto free_bmp; |
f1c3b0fc JS |
269 | } |
270 | ||
f1c3b0fc JS |
271 | cmdiocbq = lpfc_sli_get_iocbq(phba); |
272 | if (!cmdiocbq) { | |
273 | rc = -ENOMEM; | |
4cc0e56e | 274 | goto free_bmp; |
f1c3b0fc | 275 | } |
f1c3b0fc | 276 | |
4cc0e56e | 277 | cmd = &cmdiocbq->iocb; |
f1c3b0fc JS |
278 | rspiocbq = lpfc_sli_get_iocbq(phba); |
279 | if (!rspiocbq) { | |
280 | rc = -ENOMEM; | |
281 | goto free_cmdiocbq; | |
282 | } | |
f1c3b0fc JS |
283 | |
284 | rsp = &rspiocbq->iocb; | |
f1c3b0fc JS |
285 | bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys); |
286 | if (!bmp->virt) { | |
287 | rc = -ENOMEM; | |
4cc0e56e | 288 | goto free_rspiocbq; |
f1c3b0fc | 289 | } |
f1c3b0fc JS |
290 | |
291 | INIT_LIST_HEAD(&bmp->list); | |
292 | bpl = (struct ulp_bde64 *) bmp->virt; | |
f1c3b0fc JS |
293 | request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list, |
294 | job->request_payload.sg_cnt, DMA_TO_DEVICE); | |
295 | for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) { | |
296 | busaddr = sg_dma_address(sgel); | |
297 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
298 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
299 | bpl->tus.w = cpu_to_le32(bpl->tus.w); | |
300 | bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr)); | |
301 | bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr)); | |
302 | bpl++; | |
303 | } | |
304 | ||
305 | reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list, | |
306 | job->reply_payload.sg_cnt, DMA_FROM_DEVICE); | |
307 | for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) { | |
308 | busaddr = sg_dma_address(sgel); | |
309 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
310 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
311 | bpl->tus.w = cpu_to_le32(bpl->tus.w); | |
312 | bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr)); | |
313 | bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr)); | |
314 | bpl++; | |
315 | } | |
316 | ||
317 | cmd->un.genreq64.bdl.ulpIoTag32 = 0; | |
318 | cmd->un.genreq64.bdl.addrHigh = putPaddrHigh(bmp->phys); | |
319 | cmd->un.genreq64.bdl.addrLow = putPaddrLow(bmp->phys); | |
320 | cmd->un.genreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64; | |
321 | cmd->un.genreq64.bdl.bdeSize = | |
322 | (request_nseg + reply_nseg) * sizeof(struct ulp_bde64); | |
323 | cmd->ulpCommand = CMD_GEN_REQUEST64_CR; | |
324 | cmd->un.genreq64.w5.hcsw.Fctl = (SI | LA); | |
325 | cmd->un.genreq64.w5.hcsw.Dfctl = 0; | |
6a9c52cf JS |
326 | cmd->un.genreq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL; |
327 | cmd->un.genreq64.w5.hcsw.Type = FC_TYPE_CT; | |
f1c3b0fc JS |
328 | cmd->ulpBdeCount = 1; |
329 | cmd->ulpLe = 1; | |
330 | cmd->ulpClass = CLASS3; | |
331 | cmd->ulpContext = ndlp->nlp_rpi; | |
332 | cmd->ulpOwner = OWN_CHIP; | |
333 | cmdiocbq->vport = phba->pport; | |
4cc0e56e | 334 | cmdiocbq->context3 = bmp; |
f1c3b0fc | 335 | cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC; |
f1c3b0fc | 336 | timeout = phba->fc_ratov * 2; |
4cc0e56e JS |
337 | cmd->ulpTimeout = timeout; |
338 | ||
339 | cmdiocbq->iocb_cmpl = lpfc_bsg_send_mgmt_cmd_cmp; | |
340 | cmdiocbq->context1 = dd_data; | |
341 | cmdiocbq->context2 = rspiocbq; | |
342 | dd_data->type = TYPE_IOCB; | |
343 | dd_data->context_un.iocb.cmdiocbq = cmdiocbq; | |
344 | dd_data->context_un.iocb.rspiocbq = rspiocbq; | |
345 | dd_data->context_un.iocb.set_job = job; | |
346 | dd_data->context_un.iocb.bmp = bmp; | |
347 | dd_data->context_un.iocb.ndlp = ndlp; | |
348 | ||
349 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) { | |
350 | creg_val = readl(phba->HCregaddr); | |
351 | creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING); | |
352 | writel(creg_val, phba->HCregaddr); | |
353 | readl(phba->HCregaddr); /* flush */ | |
f1c3b0fc JS |
354 | } |
355 | ||
4cc0e56e | 356 | rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0); |
f1c3b0fc | 357 | |
4cc0e56e JS |
358 | if (rc == IOCB_SUCCESS) |
359 | return 0; /* done for now */ | |
f1c3b0fc | 360 | |
4cc0e56e JS |
361 | /* iocb failed so cleanup */ |
362 | pci_unmap_sg(phba->pcidev, job->request_payload.sg_list, | |
363 | job->request_payload.sg_cnt, DMA_TO_DEVICE); | |
364 | pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list, | |
365 | job->reply_payload.sg_cnt, DMA_FROM_DEVICE); | |
f1c3b0fc | 366 | |
f1c3b0fc | 367 | lpfc_mbuf_free(phba, bmp->virt, bmp->phys); |
4cc0e56e | 368 | |
f1c3b0fc JS |
369 | free_rspiocbq: |
370 | lpfc_sli_release_iocbq(phba, rspiocbq); | |
371 | free_cmdiocbq: | |
372 | lpfc_sli_release_iocbq(phba, cmdiocbq); | |
4cc0e56e JS |
373 | free_bmp: |
374 | kfree(bmp); | |
375 | free_ndlp: | |
f1c3b0fc | 376 | lpfc_nlp_put(ndlp); |
4cc0e56e JS |
377 | no_ndlp: |
378 | kfree(dd_data); | |
379 | no_dd_data: | |
380 | /* make error code available to userspace */ | |
381 | job->reply->result = rc; | |
382 | job->dd_data = NULL; | |
383 | return rc; | |
384 | } | |
385 | ||
386 | /** | |
387 | * lpfc_bsg_rport_els_cmp - lpfc_bsg_rport_els's completion handler | |
388 | * @phba: Pointer to HBA context object. | |
389 | * @cmdiocbq: Pointer to command iocb. | |
390 | * @rspiocbq: Pointer to response iocb. | |
391 | * | |
392 | * This function is the completion handler for iocbs issued using | |
393 | * lpfc_bsg_rport_els_cmp function. This function is called by the | |
394 | * ring event handler function without any lock held. This function | |
395 | * can be called from both worker thread context and interrupt | |
396 | * context. This function also can be called from other thread which | |
397 | * cleans up the SLI layer objects. | |
3b5dd52a | 398 | * This function copies the contents of the response iocb to the |
4cc0e56e JS |
399 | * response iocb memory object provided by the caller of |
400 | * lpfc_sli_issue_iocb_wait and then wakes up the thread which | |
401 | * sleeps for the iocb completion. | |
402 | **/ | |
403 | static void | |
404 | lpfc_bsg_rport_els_cmp(struct lpfc_hba *phba, | |
405 | struct lpfc_iocbq *cmdiocbq, | |
406 | struct lpfc_iocbq *rspiocbq) | |
407 | { | |
408 | struct bsg_job_data *dd_data; | |
409 | struct fc_bsg_job *job; | |
410 | IOCB_t *rsp; | |
411 | struct lpfc_nodelist *ndlp; | |
412 | struct lpfc_dmabuf *pbuflist = NULL; | |
413 | struct fc_bsg_ctels_reply *els_reply; | |
414 | uint8_t *rjt_data; | |
415 | unsigned long flags; | |
416 | int rc = 0; | |
417 | ||
418 | spin_lock_irqsave(&phba->ct_ev_lock, flags); | |
419 | dd_data = cmdiocbq->context1; | |
420 | /* normal completion and timeout crossed paths, already done */ | |
421 | if (!dd_data) { | |
422 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
423 | return; | |
424 | } | |
425 | ||
426 | cmdiocbq->iocb_flag |= LPFC_IO_WAKE; | |
427 | if (cmdiocbq->context2 && rspiocbq) | |
428 | memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb, | |
429 | &rspiocbq->iocb, sizeof(IOCB_t)); | |
430 | ||
431 | job = dd_data->context_un.iocb.set_job; | |
432 | cmdiocbq = dd_data->context_un.iocb.cmdiocbq; | |
433 | rspiocbq = dd_data->context_un.iocb.rspiocbq; | |
434 | rsp = &rspiocbq->iocb; | |
435 | ndlp = dd_data->context_un.iocb.ndlp; | |
436 | ||
437 | pci_unmap_sg(phba->pcidev, job->request_payload.sg_list, | |
438 | job->request_payload.sg_cnt, DMA_TO_DEVICE); | |
439 | pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list, | |
440 | job->reply_payload.sg_cnt, DMA_FROM_DEVICE); | |
441 | ||
442 | if (job->reply->result == -EAGAIN) | |
443 | rc = -EAGAIN; | |
444 | else if (rsp->ulpStatus == IOSTAT_SUCCESS) | |
445 | job->reply->reply_payload_rcv_len = | |
446 | rsp->un.elsreq64.bdl.bdeSize; | |
447 | else if (rsp->ulpStatus == IOSTAT_LS_RJT) { | |
448 | job->reply->reply_payload_rcv_len = | |
449 | sizeof(struct fc_bsg_ctels_reply); | |
450 | /* LS_RJT data returned in word 4 */ | |
451 | rjt_data = (uint8_t *)&rsp->un.ulpWord[4]; | |
452 | els_reply = &job->reply->reply_data.ctels_reply; | |
453 | els_reply->status = FC_CTELS_STATUS_REJECT; | |
454 | els_reply->rjt_data.action = rjt_data[3]; | |
455 | els_reply->rjt_data.reason_code = rjt_data[2]; | |
456 | els_reply->rjt_data.reason_explanation = rjt_data[1]; | |
457 | els_reply->rjt_data.vendor_unique = rjt_data[0]; | |
458 | } else | |
459 | rc = -EIO; | |
f1c3b0fc | 460 | |
4cc0e56e JS |
461 | pbuflist = (struct lpfc_dmabuf *) cmdiocbq->context3; |
462 | lpfc_mbuf_free(phba, pbuflist->virt, pbuflist->phys); | |
463 | lpfc_sli_release_iocbq(phba, rspiocbq); | |
464 | lpfc_sli_release_iocbq(phba, cmdiocbq); | |
465 | lpfc_nlp_put(ndlp); | |
466 | kfree(dd_data); | |
f1c3b0fc JS |
467 | /* make error code available to userspace */ |
468 | job->reply->result = rc; | |
4cc0e56e | 469 | job->dd_data = NULL; |
f1c3b0fc JS |
470 | /* complete the job back to userspace */ |
471 | job->job_done(job); | |
4cc0e56e JS |
472 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
473 | return; | |
f1c3b0fc JS |
474 | } |
475 | ||
476 | /** | |
477 | * lpfc_bsg_rport_els - send an ELS command from a bsg request | |
478 | * @job: fc_bsg_job to handle | |
3b5dd52a | 479 | **/ |
f1c3b0fc JS |
480 | static int |
481 | lpfc_bsg_rport_els(struct fc_bsg_job *job) | |
482 | { | |
483 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; | |
484 | struct lpfc_hba *phba = vport->phba; | |
485 | struct lpfc_rport_data *rdata = job->rport->dd_data; | |
486 | struct lpfc_nodelist *ndlp = rdata->pnode; | |
f1c3b0fc JS |
487 | uint32_t elscmd; |
488 | uint32_t cmdsize; | |
489 | uint32_t rspsize; | |
490 | struct lpfc_iocbq *rspiocbq; | |
491 | struct lpfc_iocbq *cmdiocbq; | |
492 | IOCB_t *rsp; | |
493 | uint16_t rpi = 0; | |
494 | struct lpfc_dmabuf *pcmd; | |
495 | struct lpfc_dmabuf *prsp; | |
496 | struct lpfc_dmabuf *pbuflist = NULL; | |
497 | struct ulp_bde64 *bpl; | |
f1c3b0fc JS |
498 | int request_nseg; |
499 | int reply_nseg; | |
500 | struct scatterlist *sgel = NULL; | |
501 | int numbde; | |
502 | dma_addr_t busaddr; | |
4cc0e56e JS |
503 | struct bsg_job_data *dd_data; |
504 | uint32_t creg_val; | |
f1c3b0fc JS |
505 | int rc = 0; |
506 | ||
507 | /* in case no data is transferred */ | |
508 | job->reply->reply_payload_rcv_len = 0; | |
509 | ||
4cc0e56e JS |
510 | /* allocate our bsg tracking structure */ |
511 | dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL); | |
512 | if (!dd_data) { | |
513 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
514 | "2735 Failed allocation of dd_data\n"); | |
515 | rc = -ENOMEM; | |
516 | goto no_dd_data; | |
517 | } | |
518 | ||
f1c3b0fc JS |
519 | if (!lpfc_nlp_get(ndlp)) { |
520 | rc = -ENODEV; | |
4cc0e56e | 521 | goto free_dd_data; |
f1c3b0fc JS |
522 | } |
523 | ||
524 | elscmd = job->request->rqst_data.r_els.els_code; | |
525 | cmdsize = job->request_payload.payload_len; | |
526 | rspsize = job->reply_payload.payload_len; | |
527 | rspiocbq = lpfc_sli_get_iocbq(phba); | |
528 | if (!rspiocbq) { | |
529 | lpfc_nlp_put(ndlp); | |
530 | rc = -ENOMEM; | |
4cc0e56e | 531 | goto free_dd_data; |
f1c3b0fc JS |
532 | } |
533 | ||
534 | rsp = &rspiocbq->iocb; | |
535 | rpi = ndlp->nlp_rpi; | |
536 | ||
4cc0e56e | 537 | cmdiocbq = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, |
f1c3b0fc | 538 | ndlp->nlp_DID, elscmd); |
f1c3b0fc | 539 | if (!cmdiocbq) { |
4cc0e56e JS |
540 | rc = -EIO; |
541 | goto free_rspiocbq; | |
f1c3b0fc JS |
542 | } |
543 | ||
4cc0e56e | 544 | /* prep els iocb set context1 to the ndlp, context2 to the command |
3b5dd52a JS |
545 | * dmabuf, context3 holds the data dmabuf |
546 | */ | |
f1c3b0fc JS |
547 | pcmd = (struct lpfc_dmabuf *) cmdiocbq->context2; |
548 | prsp = (struct lpfc_dmabuf *) pcmd->list.next; | |
f1c3b0fc JS |
549 | lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys); |
550 | kfree(pcmd); | |
551 | lpfc_mbuf_free(phba, prsp->virt, prsp->phys); | |
552 | kfree(prsp); | |
553 | cmdiocbq->context2 = NULL; | |
554 | ||
555 | pbuflist = (struct lpfc_dmabuf *) cmdiocbq->context3; | |
556 | bpl = (struct ulp_bde64 *) pbuflist->virt; | |
557 | ||
558 | request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list, | |
559 | job->request_payload.sg_cnt, DMA_TO_DEVICE); | |
f1c3b0fc JS |
560 | for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) { |
561 | busaddr = sg_dma_address(sgel); | |
562 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
563 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
564 | bpl->tus.w = cpu_to_le32(bpl->tus.w); | |
565 | bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr)); | |
566 | bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr)); | |
567 | bpl++; | |
568 | } | |
569 | ||
570 | reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list, | |
571 | job->reply_payload.sg_cnt, DMA_FROM_DEVICE); | |
572 | for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) { | |
573 | busaddr = sg_dma_address(sgel); | |
574 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
575 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
576 | bpl->tus.w = cpu_to_le32(bpl->tus.w); | |
577 | bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr)); | |
578 | bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr)); | |
579 | bpl++; | |
580 | } | |
f1c3b0fc JS |
581 | cmdiocbq->iocb.un.elsreq64.bdl.bdeSize = |
582 | (request_nseg + reply_nseg) * sizeof(struct ulp_bde64); | |
583 | cmdiocbq->iocb.ulpContext = rpi; | |
584 | cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC; | |
585 | cmdiocbq->context1 = NULL; | |
586 | cmdiocbq->context2 = NULL; | |
587 | ||
4cc0e56e JS |
588 | cmdiocbq->iocb_cmpl = lpfc_bsg_rport_els_cmp; |
589 | cmdiocbq->context1 = dd_data; | |
590 | cmdiocbq->context2 = rspiocbq; | |
591 | dd_data->type = TYPE_IOCB; | |
592 | dd_data->context_un.iocb.cmdiocbq = cmdiocbq; | |
593 | dd_data->context_un.iocb.rspiocbq = rspiocbq; | |
594 | dd_data->context_un.iocb.set_job = job; | |
595 | dd_data->context_un.iocb.bmp = NULL;; | |
596 | dd_data->context_un.iocb.ndlp = ndlp; | |
597 | ||
598 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) { | |
599 | creg_val = readl(phba->HCregaddr); | |
600 | creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING); | |
601 | writel(creg_val, phba->HCregaddr); | |
602 | readl(phba->HCregaddr); /* flush */ | |
603 | } | |
604 | rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0); | |
f1c3b0fc | 605 | lpfc_nlp_put(ndlp); |
4cc0e56e JS |
606 | if (rc == IOCB_SUCCESS) |
607 | return 0; /* done for now */ | |
f1c3b0fc | 608 | |
4cc0e56e JS |
609 | pci_unmap_sg(phba->pcidev, job->request_payload.sg_list, |
610 | job->request_payload.sg_cnt, DMA_TO_DEVICE); | |
611 | pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list, | |
612 | job->reply_payload.sg_cnt, DMA_FROM_DEVICE); | |
f1c3b0fc | 613 | |
4cc0e56e | 614 | lpfc_mbuf_free(phba, pbuflist->virt, pbuflist->phys); |
f1c3b0fc | 615 | |
4cc0e56e | 616 | lpfc_sli_release_iocbq(phba, cmdiocbq); |
f1c3b0fc | 617 | |
4cc0e56e JS |
618 | free_rspiocbq: |
619 | lpfc_sli_release_iocbq(phba, rspiocbq); | |
f1c3b0fc | 620 | |
4cc0e56e JS |
621 | free_dd_data: |
622 | kfree(dd_data); | |
f1c3b0fc | 623 | |
4cc0e56e JS |
624 | no_dd_data: |
625 | /* make error code available to userspace */ | |
626 | job->reply->result = rc; | |
627 | job->dd_data = NULL; | |
628 | return rc; | |
f1c3b0fc JS |
629 | } |
630 | ||
3b5dd52a JS |
631 | /** |
632 | * lpfc_bsg_event_free - frees an allocated event structure | |
633 | * @kref: Pointer to a kref. | |
634 | * | |
635 | * Called from kref_put. Back cast the kref into an event structure address. | |
636 | * Free any events to get, delete associated nodes, free any events to see, | |
637 | * free any data then free the event itself. | |
638 | **/ | |
f1c3b0fc | 639 | static void |
4cc0e56e | 640 | lpfc_bsg_event_free(struct kref *kref) |
f1c3b0fc | 641 | { |
4cc0e56e JS |
642 | struct lpfc_bsg_event *evt = container_of(kref, struct lpfc_bsg_event, |
643 | kref); | |
f1c3b0fc JS |
644 | struct event_data *ed; |
645 | ||
646 | list_del(&evt->node); | |
647 | ||
648 | while (!list_empty(&evt->events_to_get)) { | |
649 | ed = list_entry(evt->events_to_get.next, typeof(*ed), node); | |
650 | list_del(&ed->node); | |
651 | kfree(ed->data); | |
652 | kfree(ed); | |
653 | } | |
654 | ||
655 | while (!list_empty(&evt->events_to_see)) { | |
656 | ed = list_entry(evt->events_to_see.next, typeof(*ed), node); | |
657 | list_del(&ed->node); | |
658 | kfree(ed->data); | |
659 | kfree(ed); | |
660 | } | |
661 | ||
662 | kfree(evt); | |
663 | } | |
664 | ||
3b5dd52a JS |
665 | /** |
666 | * lpfc_bsg_event_ref - increments the kref for an event | |
667 | * @evt: Pointer to an event structure. | |
668 | **/ | |
f1c3b0fc | 669 | static inline void |
4cc0e56e | 670 | lpfc_bsg_event_ref(struct lpfc_bsg_event *evt) |
f1c3b0fc | 671 | { |
4cc0e56e | 672 | kref_get(&evt->kref); |
f1c3b0fc JS |
673 | } |
674 | ||
3b5dd52a JS |
675 | /** |
676 | * lpfc_bsg_event_unref - Uses kref_put to free an event structure | |
677 | * @evt: Pointer to an event structure. | |
678 | **/ | |
f1c3b0fc | 679 | static inline void |
4cc0e56e | 680 | lpfc_bsg_event_unref(struct lpfc_bsg_event *evt) |
f1c3b0fc | 681 | { |
4cc0e56e | 682 | kref_put(&evt->kref, lpfc_bsg_event_free); |
f1c3b0fc JS |
683 | } |
684 | ||
3b5dd52a JS |
685 | /** |
686 | * lpfc_bsg_event_new - allocate and initialize a event structure | |
687 | * @ev_mask: Mask of events. | |
688 | * @ev_reg_id: Event reg id. | |
689 | * @ev_req_id: Event request id. | |
690 | **/ | |
4cc0e56e JS |
691 | static struct lpfc_bsg_event * |
692 | lpfc_bsg_event_new(uint32_t ev_mask, int ev_reg_id, uint32_t ev_req_id) | |
693 | { | |
694 | struct lpfc_bsg_event *evt = kzalloc(sizeof(*evt), GFP_KERNEL); | |
f1c3b0fc | 695 | |
4cc0e56e JS |
696 | if (!evt) |
697 | return NULL; | |
698 | ||
699 | INIT_LIST_HEAD(&evt->events_to_get); | |
700 | INIT_LIST_HEAD(&evt->events_to_see); | |
701 | evt->type_mask = ev_mask; | |
702 | evt->req_id = ev_req_id; | |
703 | evt->reg_id = ev_reg_id; | |
704 | evt->wait_time_stamp = jiffies; | |
705 | init_waitqueue_head(&evt->wq); | |
706 | kref_init(&evt->kref); | |
707 | return evt; | |
708 | } | |
709 | ||
3b5dd52a JS |
710 | /** |
711 | * diag_cmd_data_free - Frees an lpfc dma buffer extension | |
712 | * @phba: Pointer to HBA context object. | |
713 | * @mlist: Pointer to an lpfc dma buffer extension. | |
714 | **/ | |
4cc0e56e | 715 | static int |
3b5dd52a | 716 | diag_cmd_data_free(struct lpfc_hba *phba, struct lpfc_dmabufext *mlist) |
4cc0e56e JS |
717 | { |
718 | struct lpfc_dmabufext *mlast; | |
719 | struct pci_dev *pcidev; | |
720 | struct list_head head, *curr, *next; | |
721 | ||
722 | if ((!mlist) || (!lpfc_is_link_up(phba) && | |
723 | (phba->link_flag & LS_LOOPBACK_MODE))) { | |
724 | return 0; | |
725 | } | |
726 | ||
727 | pcidev = phba->pcidev; | |
728 | list_add_tail(&head, &mlist->dma.list); | |
729 | ||
730 | list_for_each_safe(curr, next, &head) { | |
731 | mlast = list_entry(curr, struct lpfc_dmabufext , dma.list); | |
732 | if (mlast->dma.virt) | |
733 | dma_free_coherent(&pcidev->dev, | |
734 | mlast->size, | |
735 | mlast->dma.virt, | |
736 | mlast->dma.phys); | |
737 | kfree(mlast); | |
738 | } | |
739 | return 0; | |
740 | } | |
f1c3b0fc JS |
741 | |
742 | /** | |
743 | * lpfc_bsg_ct_unsol_event - process an unsolicited CT command | |
744 | * @phba: | |
745 | * @pring: | |
746 | * @piocbq: | |
747 | * | |
748 | * This function is called when an unsolicited CT command is received. It | |
4cc0e56e | 749 | * forwards the event to any processes registered to receive CT events. |
3b5dd52a | 750 | **/ |
4fede78f | 751 | int |
f1c3b0fc JS |
752 | lpfc_bsg_ct_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, |
753 | struct lpfc_iocbq *piocbq) | |
754 | { | |
755 | uint32_t evt_req_id = 0; | |
756 | uint32_t cmd; | |
757 | uint32_t len; | |
758 | struct lpfc_dmabuf *dmabuf = NULL; | |
4cc0e56e | 759 | struct lpfc_bsg_event *evt; |
f1c3b0fc JS |
760 | struct event_data *evt_dat = NULL; |
761 | struct lpfc_iocbq *iocbq; | |
762 | size_t offset = 0; | |
763 | struct list_head head; | |
764 | struct ulp_bde64 *bde; | |
765 | dma_addr_t dma_addr; | |
766 | int i; | |
767 | struct lpfc_dmabuf *bdeBuf1 = piocbq->context2; | |
768 | struct lpfc_dmabuf *bdeBuf2 = piocbq->context3; | |
769 | struct lpfc_hbq_entry *hbqe; | |
770 | struct lpfc_sli_ct_request *ct_req; | |
4cc0e56e | 771 | struct fc_bsg_job *job = NULL; |
4fede78f | 772 | unsigned long flags; |
4cc0e56e | 773 | int size = 0; |
f1c3b0fc JS |
774 | |
775 | INIT_LIST_HEAD(&head); | |
776 | list_add_tail(&head, &piocbq->list); | |
777 | ||
778 | if (piocbq->iocb.ulpBdeCount == 0 || | |
779 | piocbq->iocb.un.cont64[0].tus.f.bdeSize == 0) | |
780 | goto error_ct_unsol_exit; | |
781 | ||
4cc0e56e JS |
782 | if (phba->link_state == LPFC_HBA_ERROR || |
783 | (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE))) | |
784 | goto error_ct_unsol_exit; | |
785 | ||
f1c3b0fc JS |
786 | if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) |
787 | dmabuf = bdeBuf1; | |
788 | else { | |
789 | dma_addr = getPaddr(piocbq->iocb.un.cont64[0].addrHigh, | |
790 | piocbq->iocb.un.cont64[0].addrLow); | |
791 | dmabuf = lpfc_sli_ringpostbuf_get(phba, pring, dma_addr); | |
792 | } | |
4cc0e56e JS |
793 | if (dmabuf == NULL) |
794 | goto error_ct_unsol_exit; | |
f1c3b0fc JS |
795 | ct_req = (struct lpfc_sli_ct_request *)dmabuf->virt; |
796 | evt_req_id = ct_req->FsType; | |
797 | cmd = ct_req->CommandResponse.bits.CmdRsp; | |
798 | len = ct_req->CommandResponse.bits.Size; | |
799 | if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) | |
800 | lpfc_sli_ringpostbuf_put(phba, pring, dmabuf); | |
801 | ||
4fede78f | 802 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
f1c3b0fc | 803 | list_for_each_entry(evt, &phba->ct_ev_waiters, node) { |
4cc0e56e JS |
804 | if (!(evt->type_mask & FC_REG_CT_EVENT) || |
805 | evt->req_id != evt_req_id) | |
f1c3b0fc JS |
806 | continue; |
807 | ||
4cc0e56e JS |
808 | lpfc_bsg_event_ref(evt); |
809 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); | |
f1c3b0fc | 810 | evt_dat = kzalloc(sizeof(*evt_dat), GFP_KERNEL); |
4cc0e56e JS |
811 | if (evt_dat == NULL) { |
812 | spin_lock_irqsave(&phba->ct_ev_lock, flags); | |
813 | lpfc_bsg_event_unref(evt); | |
f1c3b0fc JS |
814 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, |
815 | "2614 Memory allocation failed for " | |
816 | "CT event\n"); | |
817 | break; | |
818 | } | |
819 | ||
f1c3b0fc JS |
820 | if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { |
821 | /* take accumulated byte count from the last iocbq */ | |
822 | iocbq = list_entry(head.prev, typeof(*iocbq), list); | |
823 | evt_dat->len = iocbq->iocb.unsli3.rcvsli3.acc_len; | |
824 | } else { | |
825 | list_for_each_entry(iocbq, &head, list) { | |
826 | for (i = 0; i < iocbq->iocb.ulpBdeCount; i++) | |
827 | evt_dat->len += | |
828 | iocbq->iocb.un.cont64[i].tus.f.bdeSize; | |
829 | } | |
830 | } | |
831 | ||
832 | evt_dat->data = kzalloc(evt_dat->len, GFP_KERNEL); | |
4cc0e56e | 833 | if (evt_dat->data == NULL) { |
f1c3b0fc JS |
834 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, |
835 | "2615 Memory allocation failed for " | |
836 | "CT event data, size %d\n", | |
837 | evt_dat->len); | |
838 | kfree(evt_dat); | |
4fede78f | 839 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
4cc0e56e | 840 | lpfc_bsg_event_unref(evt); |
4fede78f | 841 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
f1c3b0fc JS |
842 | goto error_ct_unsol_exit; |
843 | } | |
844 | ||
845 | list_for_each_entry(iocbq, &head, list) { | |
4cc0e56e | 846 | size = 0; |
f1c3b0fc JS |
847 | if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { |
848 | bdeBuf1 = iocbq->context2; | |
849 | bdeBuf2 = iocbq->context3; | |
850 | } | |
851 | for (i = 0; i < iocbq->iocb.ulpBdeCount; i++) { | |
f1c3b0fc JS |
852 | if (phba->sli3_options & |
853 | LPFC_SLI3_HBQ_ENABLED) { | |
854 | if (i == 0) { | |
855 | hbqe = (struct lpfc_hbq_entry *) | |
856 | &iocbq->iocb.un.ulpWord[0]; | |
857 | size = hbqe->bde.tus.f.bdeSize; | |
858 | dmabuf = bdeBuf1; | |
859 | } else if (i == 1) { | |
860 | hbqe = (struct lpfc_hbq_entry *) | |
861 | &iocbq->iocb.unsli3. | |
862 | sli3Words[4]; | |
863 | size = hbqe->bde.tus.f.bdeSize; | |
864 | dmabuf = bdeBuf2; | |
865 | } | |
866 | if ((offset + size) > evt_dat->len) | |
867 | size = evt_dat->len - offset; | |
868 | } else { | |
869 | size = iocbq->iocb.un.cont64[i]. | |
870 | tus.f.bdeSize; | |
871 | bde = &iocbq->iocb.un.cont64[i]; | |
872 | dma_addr = getPaddr(bde->addrHigh, | |
873 | bde->addrLow); | |
874 | dmabuf = lpfc_sli_ringpostbuf_get(phba, | |
875 | pring, dma_addr); | |
876 | } | |
877 | if (!dmabuf) { | |
878 | lpfc_printf_log(phba, KERN_ERR, | |
879 | LOG_LIBDFC, "2616 No dmabuf " | |
880 | "found for iocbq 0x%p\n", | |
881 | iocbq); | |
882 | kfree(evt_dat->data); | |
883 | kfree(evt_dat); | |
4fede78f JS |
884 | spin_lock_irqsave(&phba->ct_ev_lock, |
885 | flags); | |
4cc0e56e | 886 | lpfc_bsg_event_unref(evt); |
4fede78f JS |
887 | spin_unlock_irqrestore( |
888 | &phba->ct_ev_lock, flags); | |
f1c3b0fc JS |
889 | goto error_ct_unsol_exit; |
890 | } | |
891 | memcpy((char *)(evt_dat->data) + offset, | |
892 | dmabuf->virt, size); | |
893 | offset += size; | |
894 | if (evt_req_id != SLI_CT_ELX_LOOPBACK && | |
895 | !(phba->sli3_options & | |
896 | LPFC_SLI3_HBQ_ENABLED)) { | |
897 | lpfc_sli_ringpostbuf_put(phba, pring, | |
898 | dmabuf); | |
899 | } else { | |
900 | switch (cmd) { | |
4cc0e56e | 901 | case ELX_LOOPBACK_DATA: |
3b5dd52a | 902 | diag_cmd_data_free(phba, |
4cc0e56e JS |
903 | (struct lpfc_dmabufext *) |
904 | dmabuf); | |
905 | break; | |
f1c3b0fc | 906 | case ELX_LOOPBACK_XRI_SETUP: |
4cc0e56e JS |
907 | if ((phba->sli_rev == |
908 | LPFC_SLI_REV2) || | |
909 | (phba->sli3_options & | |
910 | LPFC_SLI3_HBQ_ENABLED | |
911 | )) { | |
912 | lpfc_in_buf_free(phba, | |
913 | dmabuf); | |
914 | } else { | |
f1c3b0fc JS |
915 | lpfc_post_buffer(phba, |
916 | pring, | |
917 | 1); | |
4cc0e56e | 918 | } |
f1c3b0fc JS |
919 | break; |
920 | default: | |
921 | if (!(phba->sli3_options & | |
922 | LPFC_SLI3_HBQ_ENABLED)) | |
923 | lpfc_post_buffer(phba, | |
924 | pring, | |
925 | 1); | |
926 | break; | |
927 | } | |
928 | } | |
929 | } | |
930 | } | |
931 | ||
4fede78f | 932 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
f1c3b0fc JS |
933 | if (phba->sli_rev == LPFC_SLI_REV4) { |
934 | evt_dat->immed_dat = phba->ctx_idx; | |
935 | phba->ctx_idx = (phba->ctx_idx + 1) % 64; | |
936 | phba->ct_ctx[evt_dat->immed_dat].oxid = | |
937 | piocbq->iocb.ulpContext; | |
938 | phba->ct_ctx[evt_dat->immed_dat].SID = | |
939 | piocbq->iocb.un.rcvels.remoteID; | |
940 | } else | |
941 | evt_dat->immed_dat = piocbq->iocb.ulpContext; | |
942 | ||
943 | evt_dat->type = FC_REG_CT_EVENT; | |
944 | list_add(&evt_dat->node, &evt->events_to_see); | |
4cc0e56e JS |
945 | if (evt_req_id == SLI_CT_ELX_LOOPBACK) { |
946 | wake_up_interruptible(&evt->wq); | |
947 | lpfc_bsg_event_unref(evt); | |
f1c3b0fc | 948 | break; |
4cc0e56e JS |
949 | } |
950 | ||
951 | list_move(evt->events_to_see.prev, &evt->events_to_get); | |
952 | lpfc_bsg_event_unref(evt); | |
953 | ||
954 | job = evt->set_job; | |
955 | evt->set_job = NULL; | |
956 | if (job) { | |
957 | job->reply->reply_payload_rcv_len = size; | |
958 | /* make error code available to userspace */ | |
959 | job->reply->result = 0; | |
960 | job->dd_data = NULL; | |
961 | /* complete the job back to userspace */ | |
962 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); | |
963 | job->job_done(job); | |
964 | spin_lock_irqsave(&phba->ct_ev_lock, flags); | |
965 | } | |
f1c3b0fc | 966 | } |
4fede78f | 967 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
f1c3b0fc JS |
968 | |
969 | error_ct_unsol_exit: | |
970 | if (!list_empty(&head)) | |
971 | list_del(&head); | |
4cc0e56e JS |
972 | if (evt_req_id == SLI_CT_ELX_LOOPBACK) |
973 | return 0; | |
4fede78f | 974 | return 1; |
f1c3b0fc JS |
975 | } |
976 | ||
977 | /** | |
4cc0e56e | 978 | * lpfc_bsg_hba_set_event - process a SET_EVENT bsg vendor command |
f1c3b0fc | 979 | * @job: SET_EVENT fc_bsg_job |
3b5dd52a | 980 | **/ |
f1c3b0fc | 981 | static int |
4cc0e56e | 982 | lpfc_bsg_hba_set_event(struct fc_bsg_job *job) |
f1c3b0fc JS |
983 | { |
984 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; | |
985 | struct lpfc_hba *phba = vport->phba; | |
986 | struct set_ct_event *event_req; | |
4cc0e56e | 987 | struct lpfc_bsg_event *evt; |
f1c3b0fc | 988 | int rc = 0; |
4cc0e56e JS |
989 | struct bsg_job_data *dd_data = NULL; |
990 | uint32_t ev_mask; | |
991 | unsigned long flags; | |
f1c3b0fc JS |
992 | |
993 | if (job->request_len < | |
994 | sizeof(struct fc_bsg_request) + sizeof(struct set_ct_event)) { | |
995 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
996 | "2612 Received SET_CT_EVENT below minimum " | |
997 | "size\n"); | |
4cc0e56e JS |
998 | rc = -EINVAL; |
999 | goto job_error; | |
1000 | } | |
1001 | ||
1002 | dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL); | |
1003 | if (dd_data == NULL) { | |
1004 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
1005 | "2734 Failed allocation of dd_data\n"); | |
1006 | rc = -ENOMEM; | |
1007 | goto job_error; | |
f1c3b0fc JS |
1008 | } |
1009 | ||
1010 | event_req = (struct set_ct_event *) | |
1011 | job->request->rqst_data.h_vendor.vendor_cmd; | |
4cc0e56e JS |
1012 | ev_mask = ((uint32_t)(unsigned long)event_req->type_mask & |
1013 | FC_REG_EVENT_MASK); | |
4fede78f | 1014 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
f1c3b0fc JS |
1015 | list_for_each_entry(evt, &phba->ct_ev_waiters, node) { |
1016 | if (evt->reg_id == event_req->ev_reg_id) { | |
4cc0e56e | 1017 | lpfc_bsg_event_ref(evt); |
f1c3b0fc JS |
1018 | evt->wait_time_stamp = jiffies; |
1019 | break; | |
1020 | } | |
1021 | } | |
4fede78f | 1022 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
f1c3b0fc JS |
1023 | |
1024 | if (&evt->node == &phba->ct_ev_waiters) { | |
1025 | /* no event waiting struct yet - first call */ | |
4cc0e56e | 1026 | evt = lpfc_bsg_event_new(ev_mask, event_req->ev_reg_id, |
f1c3b0fc JS |
1027 | event_req->ev_req_id); |
1028 | if (!evt) { | |
1029 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
1030 | "2617 Failed allocation of event " | |
1031 | "waiter\n"); | |
4cc0e56e JS |
1032 | rc = -ENOMEM; |
1033 | goto job_error; | |
f1c3b0fc JS |
1034 | } |
1035 | ||
4fede78f | 1036 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
f1c3b0fc | 1037 | list_add(&evt->node, &phba->ct_ev_waiters); |
4cc0e56e JS |
1038 | lpfc_bsg_event_ref(evt); |
1039 | evt->wait_time_stamp = jiffies; | |
4fede78f | 1040 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
f1c3b0fc JS |
1041 | } |
1042 | ||
4fede78f | 1043 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
4cc0e56e JS |
1044 | evt->waiting = 1; |
1045 | dd_data->type = TYPE_EVT; | |
1046 | dd_data->context_un.evt = evt; | |
1047 | evt->set_job = job; /* for unsolicited command */ | |
1048 | job->dd_data = dd_data; /* for fc transport timeout callback*/ | |
4fede78f | 1049 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
4cc0e56e | 1050 | return 0; /* call job done later */ |
f1c3b0fc | 1051 | |
4cc0e56e JS |
1052 | job_error: |
1053 | if (dd_data != NULL) | |
1054 | kfree(dd_data); | |
f1c3b0fc | 1055 | |
4cc0e56e JS |
1056 | job->dd_data = NULL; |
1057 | return rc; | |
f1c3b0fc JS |
1058 | } |
1059 | ||
1060 | /** | |
4cc0e56e | 1061 | * lpfc_bsg_hba_get_event - process a GET_EVENT bsg vendor command |
f1c3b0fc | 1062 | * @job: GET_EVENT fc_bsg_job |
3b5dd52a | 1063 | **/ |
f1c3b0fc | 1064 | static int |
4cc0e56e | 1065 | lpfc_bsg_hba_get_event(struct fc_bsg_job *job) |
f1c3b0fc JS |
1066 | { |
1067 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; | |
1068 | struct lpfc_hba *phba = vport->phba; | |
1069 | struct get_ct_event *event_req; | |
1070 | struct get_ct_event_reply *event_reply; | |
4cc0e56e | 1071 | struct lpfc_bsg_event *evt; |
f1c3b0fc | 1072 | struct event_data *evt_dat = NULL; |
4fede78f | 1073 | unsigned long flags; |
4cc0e56e | 1074 | uint32_t rc = 0; |
f1c3b0fc JS |
1075 | |
1076 | if (job->request_len < | |
1077 | sizeof(struct fc_bsg_request) + sizeof(struct get_ct_event)) { | |
1078 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
1079 | "2613 Received GET_CT_EVENT request below " | |
1080 | "minimum size\n"); | |
4cc0e56e JS |
1081 | rc = -EINVAL; |
1082 | goto job_error; | |
f1c3b0fc JS |
1083 | } |
1084 | ||
1085 | event_req = (struct get_ct_event *) | |
1086 | job->request->rqst_data.h_vendor.vendor_cmd; | |
1087 | ||
1088 | event_reply = (struct get_ct_event_reply *) | |
1089 | job->reply->reply_data.vendor_reply.vendor_rsp; | |
4fede78f | 1090 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
f1c3b0fc JS |
1091 | list_for_each_entry(evt, &phba->ct_ev_waiters, node) { |
1092 | if (evt->reg_id == event_req->ev_reg_id) { | |
1093 | if (list_empty(&evt->events_to_get)) | |
1094 | break; | |
4cc0e56e | 1095 | lpfc_bsg_event_ref(evt); |
f1c3b0fc JS |
1096 | evt->wait_time_stamp = jiffies; |
1097 | evt_dat = list_entry(evt->events_to_get.prev, | |
1098 | struct event_data, node); | |
1099 | list_del(&evt_dat->node); | |
1100 | break; | |
1101 | } | |
1102 | } | |
4fede78f | 1103 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
f1c3b0fc | 1104 | |
4cc0e56e JS |
1105 | /* The app may continue to ask for event data until it gets |
1106 | * an error indicating that there isn't anymore | |
1107 | */ | |
1108 | if (evt_dat == NULL) { | |
f1c3b0fc JS |
1109 | job->reply->reply_payload_rcv_len = 0; |
1110 | rc = -ENOENT; | |
4cc0e56e | 1111 | goto job_error; |
f1c3b0fc JS |
1112 | } |
1113 | ||
4cc0e56e JS |
1114 | if (evt_dat->len > job->request_payload.payload_len) { |
1115 | evt_dat->len = job->request_payload.payload_len; | |
1116 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
1117 | "2618 Truncated event data at %d " | |
1118 | "bytes\n", | |
1119 | job->request_payload.payload_len); | |
f1c3b0fc JS |
1120 | } |
1121 | ||
4cc0e56e | 1122 | event_reply->type = evt_dat->type; |
f1c3b0fc | 1123 | event_reply->immed_data = evt_dat->immed_dat; |
f1c3b0fc JS |
1124 | if (evt_dat->len > 0) |
1125 | job->reply->reply_payload_rcv_len = | |
4cc0e56e JS |
1126 | sg_copy_from_buffer(job->request_payload.sg_list, |
1127 | job->request_payload.sg_cnt, | |
f1c3b0fc JS |
1128 | evt_dat->data, evt_dat->len); |
1129 | else | |
1130 | job->reply->reply_payload_rcv_len = 0; | |
f1c3b0fc | 1131 | |
4cc0e56e | 1132 | if (evt_dat) { |
f1c3b0fc | 1133 | kfree(evt_dat->data); |
4cc0e56e JS |
1134 | kfree(evt_dat); |
1135 | } | |
1136 | ||
4fede78f | 1137 | spin_lock_irqsave(&phba->ct_ev_lock, flags); |
4cc0e56e | 1138 | lpfc_bsg_event_unref(evt); |
4fede78f | 1139 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); |
4cc0e56e JS |
1140 | job->dd_data = NULL; |
1141 | job->reply->result = 0; | |
f1c3b0fc | 1142 | job->job_done(job); |
4cc0e56e | 1143 | return 0; |
f1c3b0fc | 1144 | |
4cc0e56e JS |
1145 | job_error: |
1146 | job->dd_data = NULL; | |
1147 | job->reply->result = rc; | |
f1c3b0fc JS |
1148 | return rc; |
1149 | } | |
1150 | ||
1151 | /** | |
3b5dd52a JS |
1152 | * lpfc_issue_ct_rsp_cmp - lpfc_issue_ct_rsp's completion handler |
1153 | * @phba: Pointer to HBA context object. | |
1154 | * @cmdiocbq: Pointer to command iocb. | |
1155 | * @rspiocbq: Pointer to response iocb. | |
1156 | * | |
1157 | * This function is the completion handler for iocbs issued using | |
1158 | * lpfc_issue_ct_rsp_cmp function. This function is called by the | |
1159 | * ring event handler function without any lock held. This function | |
1160 | * can be called from both worker thread context and interrupt | |
1161 | * context. This function also can be called from other thread which | |
1162 | * cleans up the SLI layer objects. | |
1163 | * This function copy the contents of the response iocb to the | |
1164 | * response iocb memory object provided by the caller of | |
1165 | * lpfc_sli_issue_iocb_wait and then wakes up the thread which | |
1166 | * sleeps for the iocb completion. | |
1167 | **/ | |
1168 | static void | |
1169 | lpfc_issue_ct_rsp_cmp(struct lpfc_hba *phba, | |
1170 | struct lpfc_iocbq *cmdiocbq, | |
1171 | struct lpfc_iocbq *rspiocbq) | |
1172 | { | |
1173 | struct bsg_job_data *dd_data; | |
1174 | struct fc_bsg_job *job; | |
1175 | IOCB_t *rsp; | |
1176 | struct lpfc_dmabuf *bmp; | |
1177 | struct lpfc_nodelist *ndlp; | |
1178 | unsigned long flags; | |
1179 | int rc = 0; | |
1180 | ||
1181 | spin_lock_irqsave(&phba->ct_ev_lock, flags); | |
1182 | dd_data = cmdiocbq->context1; | |
1183 | /* normal completion and timeout crossed paths, already done */ | |
1184 | if (!dd_data) { | |
1185 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
1186 | return; | |
1187 | } | |
1188 | ||
1189 | job = dd_data->context_un.iocb.set_job; | |
1190 | bmp = dd_data->context_un.iocb.bmp; | |
1191 | rsp = &rspiocbq->iocb; | |
1192 | ndlp = dd_data->context_un.iocb.ndlp; | |
1193 | ||
1194 | pci_unmap_sg(phba->pcidev, job->request_payload.sg_list, | |
1195 | job->request_payload.sg_cnt, DMA_TO_DEVICE); | |
1196 | ||
1197 | if (rsp->ulpStatus) { | |
1198 | if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) { | |
1199 | switch (rsp->un.ulpWord[4] & 0xff) { | |
1200 | case IOERR_SEQUENCE_TIMEOUT: | |
1201 | rc = -ETIMEDOUT; | |
1202 | break; | |
1203 | case IOERR_INVALID_RPI: | |
1204 | rc = -EFAULT; | |
1205 | break; | |
1206 | default: | |
1207 | rc = -EACCES; | |
1208 | break; | |
1209 | } | |
1210 | } else | |
1211 | rc = -EACCES; | |
1212 | } else | |
1213 | job->reply->reply_payload_rcv_len = | |
1214 | rsp->un.genreq64.bdl.bdeSize; | |
1215 | ||
1216 | lpfc_mbuf_free(phba, bmp->virt, bmp->phys); | |
1217 | lpfc_sli_release_iocbq(phba, cmdiocbq); | |
1218 | lpfc_nlp_put(ndlp); | |
1219 | kfree(bmp); | |
1220 | kfree(dd_data); | |
1221 | /* make error code available to userspace */ | |
1222 | job->reply->result = rc; | |
1223 | job->dd_data = NULL; | |
1224 | /* complete the job back to userspace */ | |
1225 | job->job_done(job); | |
1226 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); | |
1227 | return; | |
1228 | } | |
1229 | ||
1230 | /** | |
1231 | * lpfc_issue_ct_rsp - issue a ct response | |
1232 | * @phba: Pointer to HBA context object. | |
1233 | * @job: Pointer to the job object. | |
1234 | * @tag: tag index value into the ports context exchange array. | |
1235 | * @bmp: Pointer to a dma buffer descriptor. | |
1236 | * @num_entry: Number of enties in the bde. | |
1237 | **/ | |
f1c3b0fc | 1238 | static int |
3b5dd52a JS |
1239 | lpfc_issue_ct_rsp(struct lpfc_hba *phba, struct fc_bsg_job *job, uint32_t tag, |
1240 | struct lpfc_dmabuf *bmp, int num_entry) | |
f1c3b0fc | 1241 | { |
3b5dd52a JS |
1242 | IOCB_t *icmd; |
1243 | struct lpfc_iocbq *ctiocb = NULL; | |
1244 | int rc = 0; | |
1245 | struct lpfc_nodelist *ndlp = NULL; | |
1246 | struct bsg_job_data *dd_data; | |
1247 | uint32_t creg_val; | |
f1c3b0fc | 1248 | |
3b5dd52a JS |
1249 | /* allocate our bsg tracking structure */ |
1250 | dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL); | |
1251 | if (!dd_data) { | |
1252 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
1253 | "2736 Failed allocation of dd_data\n"); | |
1254 | rc = -ENOMEM; | |
1255 | goto no_dd_data; | |
1256 | } | |
f1c3b0fc | 1257 | |
3b5dd52a JS |
1258 | /* Allocate buffer for command iocb */ |
1259 | ctiocb = lpfc_sli_get_iocbq(phba); | |
1260 | if (!ctiocb) { | |
1261 | rc = ENOMEM; | |
1262 | goto no_ctiocb; | |
1263 | } | |
1264 | ||
1265 | icmd = &ctiocb->iocb; | |
1266 | icmd->un.xseq64.bdl.ulpIoTag32 = 0; | |
1267 | icmd->un.xseq64.bdl.addrHigh = putPaddrHigh(bmp->phys); | |
1268 | icmd->un.xseq64.bdl.addrLow = putPaddrLow(bmp->phys); | |
1269 | icmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64; | |
1270 | icmd->un.xseq64.bdl.bdeSize = (num_entry * sizeof(struct ulp_bde64)); | |
1271 | icmd->un.xseq64.w5.hcsw.Fctl = (LS | LA); | |
1272 | icmd->un.xseq64.w5.hcsw.Dfctl = 0; | |
1273 | icmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_SOL_CTL; | |
1274 | icmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT; | |
1275 | ||
1276 | /* Fill in rest of iocb */ | |
1277 | icmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX; | |
1278 | icmd->ulpBdeCount = 1; | |
1279 | icmd->ulpLe = 1; | |
1280 | icmd->ulpClass = CLASS3; | |
1281 | if (phba->sli_rev == LPFC_SLI_REV4) { | |
1282 | /* Do not issue unsol response if oxid not marked as valid */ | |
1283 | if (!(phba->ct_ctx[tag].flags & UNSOL_VALID)) { | |
1284 | rc = IOCB_ERROR; | |
1285 | goto issue_ct_rsp_exit; | |
1286 | } | |
1287 | icmd->ulpContext = phba->ct_ctx[tag].oxid; | |
1288 | ndlp = lpfc_findnode_did(phba->pport, phba->ct_ctx[tag].SID); | |
1289 | if (!ndlp) { | |
1290 | lpfc_printf_log(phba, KERN_WARNING, LOG_ELS, | |
1291 | "2721 ndlp null for oxid %x SID %x\n", | |
1292 | icmd->ulpContext, | |
1293 | phba->ct_ctx[tag].SID); | |
1294 | rc = IOCB_ERROR; | |
1295 | goto issue_ct_rsp_exit; | |
1296 | } | |
1297 | icmd->un.ulpWord[3] = ndlp->nlp_rpi; | |
1298 | /* The exchange is done, mark the entry as invalid */ | |
1299 | phba->ct_ctx[tag].flags &= ~UNSOL_VALID; | |
1300 | } else | |
1301 | icmd->ulpContext = (ushort) tag; | |
1302 | ||
1303 | icmd->ulpTimeout = phba->fc_ratov * 2; | |
1304 | ||
1305 | /* Xmit CT response on exchange <xid> */ | |
1306 | lpfc_printf_log(phba, KERN_INFO, LOG_ELS, | |
1307 | "2722 Xmit CT response on exchange x%x Data: x%x x%x\n", | |
1308 | icmd->ulpContext, icmd->ulpIoTag, phba->link_state); | |
1309 | ||
1310 | ctiocb->iocb_cmpl = NULL; | |
1311 | ctiocb->iocb_flag |= LPFC_IO_LIBDFC; | |
1312 | ctiocb->vport = phba->pport; | |
1313 | ctiocb->context3 = bmp; | |
1314 | ||
1315 | ctiocb->iocb_cmpl = lpfc_issue_ct_rsp_cmp; | |
1316 | ctiocb->context1 = dd_data; | |
1317 | ctiocb->context2 = NULL; | |
1318 | dd_data->type = TYPE_IOCB; | |
1319 | dd_data->context_un.iocb.cmdiocbq = ctiocb; | |
1320 | dd_data->context_un.iocb.rspiocbq = NULL; | |
1321 | dd_data->context_un.iocb.set_job = job; | |
1322 | dd_data->context_un.iocb.bmp = bmp; | |
1323 | dd_data->context_un.iocb.ndlp = ndlp; | |
1324 | ||
1325 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) { | |
1326 | creg_val = readl(phba->HCregaddr); | |
1327 | creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING); | |
1328 | writel(creg_val, phba->HCregaddr); | |
1329 | readl(phba->HCregaddr); /* flush */ | |
f1c3b0fc | 1330 | } |
4cc0e56e | 1331 | |
3b5dd52a JS |
1332 | rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0); |
1333 | ||
1334 | if (rc == IOCB_SUCCESS) | |
1335 | return 0; /* done for now */ | |
1336 | ||
1337 | issue_ct_rsp_exit: | |
1338 | lpfc_sli_release_iocbq(phba, ctiocb); | |
1339 | no_ctiocb: | |
1340 | kfree(dd_data); | |
1341 | no_dd_data: | |
4cc0e56e | 1342 | return rc; |
f1c3b0fc JS |
1343 | } |
1344 | ||
1345 | /** | |
3b5dd52a JS |
1346 | * lpfc_bsg_send_mgmt_rsp - process a SEND_MGMT_RESP bsg vendor command |
1347 | * @job: SEND_MGMT_RESP fc_bsg_job | |
1348 | **/ | |
1349 | static int | |
1350 | lpfc_bsg_send_mgmt_rsp(struct fc_bsg_job *job) | |
f1c3b0fc | 1351 | { |
3b5dd52a JS |
1352 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; |
1353 | struct lpfc_hba *phba = vport->phba; | |
1354 | struct send_mgmt_resp *mgmt_resp = (struct send_mgmt_resp *) | |
1355 | job->request->rqst_data.h_vendor.vendor_cmd; | |
1356 | struct ulp_bde64 *bpl; | |
1357 | struct lpfc_dmabuf *bmp = NULL; | |
1358 | struct scatterlist *sgel = NULL; | |
1359 | int request_nseg; | |
1360 | int numbde; | |
1361 | dma_addr_t busaddr; | |
1362 | uint32_t tag = mgmt_resp->tag; | |
1363 | unsigned long reqbfrcnt = | |
1364 | (unsigned long)job->request_payload.payload_len; | |
1365 | int rc = 0; | |
f1c3b0fc | 1366 | |
3b5dd52a JS |
1367 | /* in case no data is transferred */ |
1368 | job->reply->reply_payload_rcv_len = 0; | |
1369 | ||
1370 | if (!reqbfrcnt || (reqbfrcnt > (80 * BUF_SZ_4K))) { | |
1371 | rc = -ERANGE; | |
1372 | goto send_mgmt_rsp_exit; | |
1373 | } | |
1374 | ||
1375 | bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); | |
1376 | if (!bmp) { | |
1377 | rc = -ENOMEM; | |
1378 | goto send_mgmt_rsp_exit; | |
1379 | } | |
1380 | ||
1381 | bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys); | |
1382 | if (!bmp->virt) { | |
1383 | rc = -ENOMEM; | |
1384 | goto send_mgmt_rsp_free_bmp; | |
1385 | } | |
1386 | ||
1387 | INIT_LIST_HEAD(&bmp->list); | |
1388 | bpl = (struct ulp_bde64 *) bmp->virt; | |
1389 | request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list, | |
1390 | job->request_payload.sg_cnt, DMA_TO_DEVICE); | |
1391 | for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) { | |
1392 | busaddr = sg_dma_address(sgel); | |
1393 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1394 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
1395 | bpl->tus.w = cpu_to_le32(bpl->tus.w); | |
1396 | bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr)); | |
1397 | bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr)); | |
1398 | bpl++; | |
f1c3b0fc JS |
1399 | } |
1400 | ||
3b5dd52a JS |
1401 | rc = lpfc_issue_ct_rsp(phba, job, tag, bmp, request_nseg); |
1402 | ||
1403 | if (rc == IOCB_SUCCESS) | |
1404 | return 0; /* done for now */ | |
1405 | ||
1406 | /* TBD need to handle a timeout */ | |
1407 | pci_unmap_sg(phba->pcidev, job->request_payload.sg_list, | |
1408 | job->request_payload.sg_cnt, DMA_TO_DEVICE); | |
1409 | rc = -EACCES; | |
1410 | lpfc_mbuf_free(phba, bmp->virt, bmp->phys); | |
1411 | ||
1412 | send_mgmt_rsp_free_bmp: | |
1413 | kfree(bmp); | |
1414 | send_mgmt_rsp_exit: | |
1415 | /* make error code available to userspace */ | |
1416 | job->reply->result = rc; | |
1417 | job->dd_data = NULL; | |
f1c3b0fc JS |
1418 | return rc; |
1419 | } | |
1420 | ||
1421 | /** | |
3b5dd52a JS |
1422 | * lpfc_bsg_diag_mode - process a LPFC_BSG_VENDOR_DIAG_MODE bsg vendor command |
1423 | * @job: LPFC_BSG_VENDOR_DIAG_MODE | |
f1c3b0fc | 1424 | * |
3b5dd52a JS |
1425 | * This function is responsible for placing a port into diagnostic loopback |
1426 | * mode in order to perform a diagnostic loopback test. | |
1427 | * All new scsi requests are blocked, a small delay is used to allow the | |
1428 | * scsi requests to complete then the link is brought down. If the link is | |
1429 | * is placed in loopback mode then scsi requests are again allowed | |
1430 | * so the scsi mid-layer doesn't give up on the port. | |
1431 | * All of this is done in-line. | |
f1c3b0fc | 1432 | */ |
3b5dd52a JS |
1433 | static int |
1434 | lpfc_bsg_diag_mode(struct fc_bsg_job *job) | |
f1c3b0fc | 1435 | { |
3b5dd52a | 1436 | struct Scsi_Host *shost = job->shost; |
f1c3b0fc JS |
1437 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; |
1438 | struct lpfc_hba *phba = vport->phba; | |
3b5dd52a JS |
1439 | struct diag_mode_set *loopback_mode; |
1440 | struct lpfc_sli *psli = &phba->sli; | |
1441 | struct lpfc_sli_ring *pring = &psli->ring[LPFC_FCP_RING]; | |
1442 | uint32_t link_flags; | |
1443 | uint32_t timeout; | |
1444 | struct lpfc_vport **vports; | |
1445 | LPFC_MBOXQ_t *pmboxq; | |
1446 | int mbxstatus; | |
1447 | int i = 0; | |
1448 | int rc = 0; | |
f1c3b0fc | 1449 | |
3b5dd52a JS |
1450 | /* no data to return just the return code */ |
1451 | job->reply->reply_payload_rcv_len = 0; | |
1452 | ||
1453 | if (job->request_len < | |
1454 | sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_set)) { | |
1455 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
1456 | "2738 Received DIAG MODE request below minimum " | |
1457 | "size\n"); | |
1458 | rc = -EINVAL; | |
1459 | goto job_error; | |
1460 | } | |
1461 | ||
1462 | loopback_mode = (struct diag_mode_set *) | |
1463 | job->request->rqst_data.h_vendor.vendor_cmd; | |
1464 | link_flags = loopback_mode->type; | |
1465 | timeout = loopback_mode->timeout; | |
1466 | ||
1467 | if ((phba->link_state == LPFC_HBA_ERROR) || | |
1468 | (psli->sli_flag & LPFC_BLOCK_MGMT_IO) || | |
1469 | (!(psli->sli_flag & LPFC_SLI_ACTIVE))) { | |
1470 | rc = -EACCES; | |
1471 | goto job_error; | |
1472 | } | |
1473 | ||
1474 | pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); | |
1475 | if (!pmboxq) { | |
1476 | rc = -ENOMEM; | |
1477 | goto job_error; | |
1478 | } | |
1479 | ||
1480 | vports = lpfc_create_vport_work_array(phba); | |
1481 | if (vports) { | |
1482 | for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { | |
1483 | shost = lpfc_shost_from_vport(vports[i]); | |
1484 | scsi_block_requests(shost); | |
1485 | } | |
1486 | ||
1487 | lpfc_destroy_vport_work_array(phba, vports); | |
1488 | } else { | |
1489 | shost = lpfc_shost_from_vport(phba->pport); | |
1490 | scsi_block_requests(shost); | |
1491 | } | |
1492 | ||
1493 | while (pring->txcmplq_cnt) { | |
1494 | if (i++ > 500) /* wait up to 5 seconds */ | |
1495 | break; | |
1496 | ||
1497 | msleep(10); | |
1498 | } | |
1499 | ||
1500 | memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t)); | |
1501 | pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK; | |
1502 | pmboxq->u.mb.mbxOwner = OWN_HOST; | |
1503 | ||
1504 | mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO); | |
1505 | ||
1506 | if ((mbxstatus == MBX_SUCCESS) && (pmboxq->u.mb.mbxStatus == 0)) { | |
1507 | /* wait for link down before proceeding */ | |
1508 | i = 0; | |
1509 | while (phba->link_state != LPFC_LINK_DOWN) { | |
1510 | if (i++ > timeout) { | |
1511 | rc = -ETIMEDOUT; | |
1512 | goto loopback_mode_exit; | |
1513 | } | |
1514 | ||
1515 | msleep(10); | |
1516 | } | |
1517 | ||
1518 | memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t)); | |
1519 | if (link_flags == INTERNAL_LOOP_BACK) | |
1520 | pmboxq->u.mb.un.varInitLnk.link_flags = FLAGS_LOCAL_LB; | |
1521 | else | |
1522 | pmboxq->u.mb.un.varInitLnk.link_flags = | |
1523 | FLAGS_TOPOLOGY_MODE_LOOP; | |
1524 | ||
1525 | pmboxq->u.mb.mbxCommand = MBX_INIT_LINK; | |
1526 | pmboxq->u.mb.mbxOwner = OWN_HOST; | |
1527 | ||
1528 | mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, | |
1529 | LPFC_MBOX_TMO); | |
1530 | ||
1531 | if ((mbxstatus != MBX_SUCCESS) || (pmboxq->u.mb.mbxStatus)) | |
1532 | rc = -ENODEV; | |
1533 | else { | |
1534 | phba->link_flag |= LS_LOOPBACK_MODE; | |
1535 | /* wait for the link attention interrupt */ | |
1536 | msleep(100); | |
1537 | ||
1538 | i = 0; | |
1539 | while (phba->link_state != LPFC_HBA_READY) { | |
1540 | if (i++ > timeout) { | |
1541 | rc = -ETIMEDOUT; | |
1542 | break; | |
1543 | } | |
1544 | ||
1545 | msleep(10); | |
1546 | } | |
1547 | } | |
1548 | ||
1549 | } else | |
1550 | rc = -ENODEV; | |
1551 | ||
1552 | loopback_mode_exit: | |
1553 | vports = lpfc_create_vport_work_array(phba); | |
1554 | if (vports) { | |
1555 | for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { | |
1556 | shost = lpfc_shost_from_vport(vports[i]); | |
1557 | scsi_unblock_requests(shost); | |
1558 | } | |
1559 | lpfc_destroy_vport_work_array(phba, vports); | |
1560 | } else { | |
1561 | shost = lpfc_shost_from_vport(phba->pport); | |
1562 | scsi_unblock_requests(shost); | |
1563 | } | |
1564 | ||
1565 | /* | |
1566 | * Let SLI layer release mboxq if mbox command completed after timeout. | |
1567 | */ | |
1568 | if (mbxstatus != MBX_TIMEOUT) | |
1569 | mempool_free(pmboxq, phba->mbox_mem_pool); | |
1570 | ||
1571 | job_error: | |
1572 | /* make error code available to userspace */ | |
1573 | job->reply->result = rc; | |
1574 | /* complete the job back to userspace if no error */ | |
1575 | if (rc == 0) | |
1576 | job->job_done(job); | |
1577 | return rc; | |
1578 | } | |
1579 | ||
1580 | /** | |
1581 | * lpfcdiag_loop_self_reg - obtains a remote port login id | |
1582 | * @phba: Pointer to HBA context object | |
1583 | * @rpi: Pointer to a remote port login id | |
1584 | * | |
1585 | * This function obtains a remote port login id so the diag loopback test | |
1586 | * can send and receive its own unsolicited CT command. | |
1587 | **/ | |
1588 | static int lpfcdiag_loop_self_reg(struct lpfc_hba *phba, uint16_t * rpi) | |
1589 | { | |
1590 | LPFC_MBOXQ_t *mbox; | |
1591 | struct lpfc_dmabuf *dmabuff; | |
1592 | int status; | |
1593 | ||
1594 | mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); | |
1595 | if (!mbox) | |
1596 | return ENOMEM; | |
1597 | ||
1598 | status = lpfc_reg_rpi(phba, 0, phba->pport->fc_myDID, | |
1599 | (uint8_t *)&phba->pport->fc_sparam, mbox, 0); | |
1600 | if (status) { | |
1601 | mempool_free(mbox, phba->mbox_mem_pool); | |
1602 | return ENOMEM; | |
1603 | } | |
1604 | ||
1605 | dmabuff = (struct lpfc_dmabuf *) mbox->context1; | |
1606 | mbox->context1 = NULL; | |
1607 | status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); | |
1608 | ||
1609 | if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) { | |
1610 | lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys); | |
1611 | kfree(dmabuff); | |
1612 | if (status != MBX_TIMEOUT) | |
1613 | mempool_free(mbox, phba->mbox_mem_pool); | |
1614 | return ENODEV; | |
1615 | } | |
1616 | ||
1617 | *rpi = mbox->u.mb.un.varWords[0]; | |
1618 | ||
1619 | lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys); | |
1620 | kfree(dmabuff); | |
1621 | mempool_free(mbox, phba->mbox_mem_pool); | |
1622 | return 0; | |
1623 | } | |
1624 | ||
1625 | /** | |
1626 | * lpfcdiag_loop_self_unreg - unregs from the rpi | |
1627 | * @phba: Pointer to HBA context object | |
1628 | * @rpi: Remote port login id | |
1629 | * | |
1630 | * This function unregisters the rpi obtained in lpfcdiag_loop_self_reg | |
1631 | **/ | |
1632 | static int lpfcdiag_loop_self_unreg(struct lpfc_hba *phba, uint16_t rpi) | |
1633 | { | |
1634 | LPFC_MBOXQ_t *mbox; | |
1635 | int status; | |
1636 | ||
1637 | /* Allocate mboxq structure */ | |
1638 | mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); | |
1639 | if (mbox == NULL) | |
1640 | return ENOMEM; | |
1641 | ||
1642 | lpfc_unreg_login(phba, 0, rpi, mbox); | |
1643 | status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO); | |
1644 | ||
1645 | if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) { | |
1646 | if (status != MBX_TIMEOUT) | |
1647 | mempool_free(mbox, phba->mbox_mem_pool); | |
1648 | return EIO; | |
1649 | } | |
1650 | ||
1651 | mempool_free(mbox, phba->mbox_mem_pool); | |
1652 | return 0; | |
1653 | } | |
1654 | ||
1655 | /** | |
1656 | * lpfcdiag_loop_get_xri - obtains the transmit and receive ids | |
1657 | * @phba: Pointer to HBA context object | |
1658 | * @rpi: Remote port login id | |
1659 | * @txxri: Pointer to transmit exchange id | |
1660 | * @rxxri: Pointer to response exchabge id | |
1661 | * | |
1662 | * This function obtains the transmit and receive ids required to send | |
1663 | * an unsolicited ct command with a payload. A special lpfc FsType and CmdRsp | |
1664 | * flags are used to the unsolicted response handler is able to process | |
1665 | * the ct command sent on the same port. | |
1666 | **/ | |
1667 | static int lpfcdiag_loop_get_xri(struct lpfc_hba *phba, uint16_t rpi, | |
1668 | uint16_t *txxri, uint16_t * rxxri) | |
1669 | { | |
1670 | struct lpfc_bsg_event *evt; | |
1671 | struct lpfc_iocbq *cmdiocbq, *rspiocbq; | |
1672 | IOCB_t *cmd, *rsp; | |
1673 | struct lpfc_dmabuf *dmabuf; | |
1674 | struct ulp_bde64 *bpl = NULL; | |
1675 | struct lpfc_sli_ct_request *ctreq = NULL; | |
1676 | int ret_val = 0; | |
1677 | unsigned long flags; | |
1678 | ||
1679 | *txxri = 0; | |
1680 | *rxxri = 0; | |
1681 | evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid, | |
1682 | SLI_CT_ELX_LOOPBACK); | |
1683 | if (!evt) | |
1684 | return ENOMEM; | |
1685 | ||
1686 | spin_lock_irqsave(&phba->ct_ev_lock, flags); | |
1687 | list_add(&evt->node, &phba->ct_ev_waiters); | |
1688 | lpfc_bsg_event_ref(evt); | |
1689 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); | |
1690 | ||
1691 | cmdiocbq = lpfc_sli_get_iocbq(phba); | |
1692 | rspiocbq = lpfc_sli_get_iocbq(phba); | |
1693 | ||
1694 | dmabuf = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); | |
1695 | if (dmabuf) { | |
1696 | dmabuf->virt = lpfc_mbuf_alloc(phba, 0, &dmabuf->phys); | |
1697 | INIT_LIST_HEAD(&dmabuf->list); | |
1698 | bpl = (struct ulp_bde64 *) dmabuf->virt; | |
1699 | memset(bpl, 0, sizeof(*bpl)); | |
1700 | ctreq = (struct lpfc_sli_ct_request *)(bpl + 1); | |
1701 | bpl->addrHigh = | |
1702 | le32_to_cpu(putPaddrHigh(dmabuf->phys + sizeof(*bpl))); | |
1703 | bpl->addrLow = | |
1704 | le32_to_cpu(putPaddrLow(dmabuf->phys + sizeof(*bpl))); | |
1705 | bpl->tus.f.bdeFlags = 0; | |
1706 | bpl->tus.f.bdeSize = ELX_LOOPBACK_HEADER_SZ; | |
1707 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
1708 | } | |
1709 | ||
1710 | if (cmdiocbq == NULL || rspiocbq == NULL || | |
1711 | dmabuf == NULL || bpl == NULL || ctreq == NULL) { | |
1712 | ret_val = ENOMEM; | |
1713 | goto err_get_xri_exit; | |
1714 | } | |
1715 | ||
1716 | cmd = &cmdiocbq->iocb; | |
1717 | rsp = &rspiocbq->iocb; | |
1718 | ||
1719 | memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ); | |
1720 | ||
1721 | ctreq->RevisionId.bits.Revision = SLI_CT_REVISION; | |
1722 | ctreq->RevisionId.bits.InId = 0; | |
1723 | ctreq->FsType = SLI_CT_ELX_LOOPBACK; | |
1724 | ctreq->FsSubType = 0; | |
1725 | ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_XRI_SETUP; | |
1726 | ctreq->CommandResponse.bits.Size = 0; | |
1727 | ||
1728 | ||
1729 | cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(dmabuf->phys); | |
1730 | cmd->un.xseq64.bdl.addrLow = putPaddrLow(dmabuf->phys); | |
1731 | cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64; | |
1732 | cmd->un.xseq64.bdl.bdeSize = sizeof(*bpl); | |
1733 | ||
1734 | cmd->un.xseq64.w5.hcsw.Fctl = LA; | |
1735 | cmd->un.xseq64.w5.hcsw.Dfctl = 0; | |
1736 | cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL; | |
1737 | cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT; | |
1738 | ||
1739 | cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CR; | |
1740 | cmd->ulpBdeCount = 1; | |
1741 | cmd->ulpLe = 1; | |
1742 | cmd->ulpClass = CLASS3; | |
1743 | cmd->ulpContext = rpi; | |
1744 | ||
1745 | cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC; | |
1746 | cmdiocbq->vport = phba->pport; | |
1747 | ||
1748 | ret_val = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq, | |
1749 | rspiocbq, | |
1750 | (phba->fc_ratov * 2) | |
1751 | + LPFC_DRVR_TIMEOUT); | |
1752 | if (ret_val) | |
1753 | goto err_get_xri_exit; | |
1754 | ||
1755 | *txxri = rsp->ulpContext; | |
1756 | ||
1757 | evt->waiting = 1; | |
1758 | evt->wait_time_stamp = jiffies; | |
1759 | ret_val = wait_event_interruptible_timeout( | |
1760 | evt->wq, !list_empty(&evt->events_to_see), | |
1761 | ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT) * HZ); | |
1762 | if (list_empty(&evt->events_to_see)) | |
1763 | ret_val = (ret_val) ? EINTR : ETIMEDOUT; | |
1764 | else { | |
1765 | ret_val = IOCB_SUCCESS; | |
1766 | spin_lock_irqsave(&phba->ct_ev_lock, flags); | |
1767 | list_move(evt->events_to_see.prev, &evt->events_to_get); | |
1768 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); | |
1769 | *rxxri = (list_entry(evt->events_to_get.prev, | |
1770 | typeof(struct event_data), | |
1771 | node))->immed_dat; | |
1772 | } | |
1773 | evt->waiting = 0; | |
1774 | ||
1775 | err_get_xri_exit: | |
1776 | spin_lock_irqsave(&phba->ct_ev_lock, flags); | |
1777 | lpfc_bsg_event_unref(evt); /* release ref */ | |
1778 | lpfc_bsg_event_unref(evt); /* delete */ | |
1779 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); | |
1780 | ||
1781 | if (dmabuf) { | |
1782 | if (dmabuf->virt) | |
1783 | lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys); | |
1784 | kfree(dmabuf); | |
1785 | } | |
1786 | ||
1787 | if (cmdiocbq && (ret_val != IOCB_TIMEDOUT)) | |
1788 | lpfc_sli_release_iocbq(phba, cmdiocbq); | |
1789 | if (rspiocbq) | |
1790 | lpfc_sli_release_iocbq(phba, rspiocbq); | |
1791 | return ret_val; | |
1792 | } | |
1793 | ||
1794 | /** | |
1795 | * diag_cmd_data_alloc - fills in a bde struct with dma buffers | |
1796 | * @phba: Pointer to HBA context object | |
1797 | * @bpl: Pointer to 64 bit bde structure | |
1798 | * @size: Number of bytes to process | |
1799 | * @nocopydata: Flag to copy user data into the allocated buffer | |
1800 | * | |
1801 | * This function allocates page size buffers and populates an lpfc_dmabufext. | |
1802 | * If allowed the user data pointed to with indataptr is copied into the kernel | |
1803 | * memory. The chained list of page size buffers is returned. | |
1804 | **/ | |
1805 | static struct lpfc_dmabufext * | |
1806 | diag_cmd_data_alloc(struct lpfc_hba *phba, | |
1807 | struct ulp_bde64 *bpl, uint32_t size, | |
1808 | int nocopydata) | |
1809 | { | |
1810 | struct lpfc_dmabufext *mlist = NULL; | |
1811 | struct lpfc_dmabufext *dmp; | |
1812 | int cnt, offset = 0, i = 0; | |
1813 | struct pci_dev *pcidev; | |
1814 | ||
1815 | pcidev = phba->pcidev; | |
1816 | ||
1817 | while (size) { | |
1818 | /* We get chunks of 4K */ | |
1819 | if (size > BUF_SZ_4K) | |
1820 | cnt = BUF_SZ_4K; | |
1821 | else | |
1822 | cnt = size; | |
1823 | ||
1824 | /* allocate struct lpfc_dmabufext buffer header */ | |
1825 | dmp = kmalloc(sizeof(struct lpfc_dmabufext), GFP_KERNEL); | |
1826 | if (!dmp) | |
1827 | goto out; | |
1828 | ||
1829 | INIT_LIST_HEAD(&dmp->dma.list); | |
1830 | ||
1831 | /* Queue it to a linked list */ | |
1832 | if (mlist) | |
1833 | list_add_tail(&dmp->dma.list, &mlist->dma.list); | |
1834 | else | |
1835 | mlist = dmp; | |
1836 | ||
1837 | /* allocate buffer */ | |
1838 | dmp->dma.virt = dma_alloc_coherent(&pcidev->dev, | |
1839 | cnt, | |
1840 | &(dmp->dma.phys), | |
1841 | GFP_KERNEL); | |
1842 | ||
1843 | if (!dmp->dma.virt) | |
1844 | goto out; | |
1845 | ||
1846 | dmp->size = cnt; | |
1847 | ||
1848 | if (nocopydata) { | |
1849 | bpl->tus.f.bdeFlags = 0; | |
1850 | pci_dma_sync_single_for_device(phba->pcidev, | |
1851 | dmp->dma.phys, LPFC_BPL_SIZE, PCI_DMA_TODEVICE); | |
1852 | ||
1853 | } else { | |
1854 | memset((uint8_t *)dmp->dma.virt, 0, cnt); | |
1855 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
1856 | } | |
1857 | ||
1858 | /* build buffer ptr list for IOCB */ | |
1859 | bpl->addrLow = le32_to_cpu(putPaddrLow(dmp->dma.phys)); | |
1860 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(dmp->dma.phys)); | |
1861 | bpl->tus.f.bdeSize = (ushort) cnt; | |
1862 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
1863 | bpl++; | |
1864 | ||
1865 | i++; | |
1866 | offset += cnt; | |
1867 | size -= cnt; | |
1868 | } | |
1869 | ||
1870 | mlist->flag = i; | |
1871 | return mlist; | |
1872 | out: | |
1873 | diag_cmd_data_free(phba, mlist); | |
1874 | return NULL; | |
1875 | } | |
1876 | ||
1877 | /** | |
1878 | * lpfcdiag_loop_post_rxbufs - post the receive buffers for an unsol CT cmd | |
1879 | * @phba: Pointer to HBA context object | |
1880 | * @rxxri: Receive exchange id | |
1881 | * @len: Number of data bytes | |
1882 | * | |
1883 | * This function allocates and posts a data buffer of sufficient size to recieve | |
1884 | * an unsolicted CT command. | |
1885 | **/ | |
1886 | static int lpfcdiag_loop_post_rxbufs(struct lpfc_hba *phba, uint16_t rxxri, | |
1887 | size_t len) | |
1888 | { | |
1889 | struct lpfc_sli *psli = &phba->sli; | |
1890 | struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING]; | |
1891 | struct lpfc_iocbq *cmdiocbq; | |
1892 | IOCB_t *cmd = NULL; | |
1893 | struct list_head head, *curr, *next; | |
1894 | struct lpfc_dmabuf *rxbmp; | |
1895 | struct lpfc_dmabuf *dmp; | |
1896 | struct lpfc_dmabuf *mp[2] = {NULL, NULL}; | |
1897 | struct ulp_bde64 *rxbpl = NULL; | |
1898 | uint32_t num_bde; | |
1899 | struct lpfc_dmabufext *rxbuffer = NULL; | |
1900 | int ret_val = 0; | |
1901 | int i = 0; | |
1902 | ||
1903 | cmdiocbq = lpfc_sli_get_iocbq(phba); | |
1904 | rxbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); | |
1905 | if (rxbmp != NULL) { | |
1906 | rxbmp->virt = lpfc_mbuf_alloc(phba, 0, &rxbmp->phys); | |
1907 | INIT_LIST_HEAD(&rxbmp->list); | |
1908 | rxbpl = (struct ulp_bde64 *) rxbmp->virt; | |
1909 | rxbuffer = diag_cmd_data_alloc(phba, rxbpl, len, 0); | |
1910 | } | |
1911 | ||
1912 | if (!cmdiocbq || !rxbmp || !rxbpl || !rxbuffer) { | |
1913 | ret_val = ENOMEM; | |
1914 | goto err_post_rxbufs_exit; | |
1915 | } | |
1916 | ||
1917 | /* Queue buffers for the receive exchange */ | |
1918 | num_bde = (uint32_t)rxbuffer->flag; | |
1919 | dmp = &rxbuffer->dma; | |
1920 | ||
1921 | cmd = &cmdiocbq->iocb; | |
1922 | i = 0; | |
1923 | ||
1924 | INIT_LIST_HEAD(&head); | |
1925 | list_add_tail(&head, &dmp->list); | |
1926 | list_for_each_safe(curr, next, &head) { | |
1927 | mp[i] = list_entry(curr, struct lpfc_dmabuf, list); | |
1928 | list_del(curr); | |
1929 | ||
1930 | if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { | |
1931 | mp[i]->buffer_tag = lpfc_sli_get_buffer_tag(phba); | |
1932 | cmd->un.quexri64cx.buff.bde.addrHigh = | |
1933 | putPaddrHigh(mp[i]->phys); | |
1934 | cmd->un.quexri64cx.buff.bde.addrLow = | |
1935 | putPaddrLow(mp[i]->phys); | |
1936 | cmd->un.quexri64cx.buff.bde.tus.f.bdeSize = | |
1937 | ((struct lpfc_dmabufext *)mp[i])->size; | |
1938 | cmd->un.quexri64cx.buff.buffer_tag = mp[i]->buffer_tag; | |
1939 | cmd->ulpCommand = CMD_QUE_XRI64_CX; | |
1940 | cmd->ulpPU = 0; | |
1941 | cmd->ulpLe = 1; | |
1942 | cmd->ulpBdeCount = 1; | |
1943 | cmd->unsli3.que_xri64cx_ext_words.ebde_count = 0; | |
1944 | ||
1945 | } else { | |
1946 | cmd->un.cont64[i].addrHigh = putPaddrHigh(mp[i]->phys); | |
1947 | cmd->un.cont64[i].addrLow = putPaddrLow(mp[i]->phys); | |
1948 | cmd->un.cont64[i].tus.f.bdeSize = | |
1949 | ((struct lpfc_dmabufext *)mp[i])->size; | |
1950 | cmd->ulpBdeCount = ++i; | |
1951 | ||
1952 | if ((--num_bde > 0) && (i < 2)) | |
1953 | continue; | |
1954 | ||
1955 | cmd->ulpCommand = CMD_QUE_XRI_BUF64_CX; | |
1956 | cmd->ulpLe = 1; | |
1957 | } | |
1958 | ||
1959 | cmd->ulpClass = CLASS3; | |
1960 | cmd->ulpContext = rxxri; | |
1961 | ||
1962 | ret_val = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0); | |
1963 | ||
1964 | if (ret_val == IOCB_ERROR) { | |
1965 | diag_cmd_data_free(phba, | |
1966 | (struct lpfc_dmabufext *)mp[0]); | |
1967 | if (mp[1]) | |
1968 | diag_cmd_data_free(phba, | |
1969 | (struct lpfc_dmabufext *)mp[1]); | |
1970 | dmp = list_entry(next, struct lpfc_dmabuf, list); | |
1971 | ret_val = EIO; | |
1972 | goto err_post_rxbufs_exit; | |
1973 | } | |
1974 | ||
1975 | lpfc_sli_ringpostbuf_put(phba, pring, mp[0]); | |
1976 | if (mp[1]) { | |
1977 | lpfc_sli_ringpostbuf_put(phba, pring, mp[1]); | |
1978 | mp[1] = NULL; | |
1979 | } | |
1980 | ||
1981 | /* The iocb was freed by lpfc_sli_issue_iocb */ | |
1982 | cmdiocbq = lpfc_sli_get_iocbq(phba); | |
1983 | if (!cmdiocbq) { | |
1984 | dmp = list_entry(next, struct lpfc_dmabuf, list); | |
1985 | ret_val = EIO; | |
1986 | goto err_post_rxbufs_exit; | |
1987 | } | |
1988 | ||
1989 | cmd = &cmdiocbq->iocb; | |
1990 | i = 0; | |
1991 | } | |
1992 | list_del(&head); | |
1993 | ||
1994 | err_post_rxbufs_exit: | |
1995 | ||
1996 | if (rxbmp) { | |
1997 | if (rxbmp->virt) | |
1998 | lpfc_mbuf_free(phba, rxbmp->virt, rxbmp->phys); | |
1999 | kfree(rxbmp); | |
2000 | } | |
2001 | ||
2002 | if (cmdiocbq) | |
2003 | lpfc_sli_release_iocbq(phba, cmdiocbq); | |
2004 | return ret_val; | |
2005 | } | |
2006 | ||
2007 | /** | |
2008 | * lpfc_bsg_diag_test - with a port in loopback issues a Ct cmd to itself | |
2009 | * @job: LPFC_BSG_VENDOR_DIAG_TEST fc_bsg_job | |
2010 | * | |
2011 | * This function receives a user data buffer to be transmitted and received on | |
2012 | * the same port, the link must be up and in loopback mode prior | |
2013 | * to being called. | |
2014 | * 1. A kernel buffer is allocated to copy the user data into. | |
2015 | * 2. The port registers with "itself". | |
2016 | * 3. The transmit and receive exchange ids are obtained. | |
2017 | * 4. The receive exchange id is posted. | |
2018 | * 5. A new els loopback event is created. | |
2019 | * 6. The command and response iocbs are allocated. | |
2020 | * 7. The cmd iocb FsType is set to elx loopback and the CmdRsp to looppback. | |
2021 | * | |
2022 | * This function is meant to be called n times while the port is in loopback | |
2023 | * so it is the apps responsibility to issue a reset to take the port out | |
2024 | * of loopback mode. | |
2025 | **/ | |
2026 | static int | |
2027 | lpfc_bsg_diag_test(struct fc_bsg_job *job) | |
2028 | { | |
2029 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; | |
2030 | struct lpfc_hba *phba = vport->phba; | |
2031 | struct diag_mode_test *diag_mode; | |
2032 | struct lpfc_bsg_event *evt; | |
2033 | struct event_data *evdat; | |
2034 | struct lpfc_sli *psli = &phba->sli; | |
2035 | uint32_t size; | |
2036 | uint32_t full_size; | |
2037 | size_t segment_len = 0, segment_offset = 0, current_offset = 0; | |
2038 | uint16_t rpi; | |
2039 | struct lpfc_iocbq *cmdiocbq, *rspiocbq; | |
2040 | IOCB_t *cmd, *rsp; | |
2041 | struct lpfc_sli_ct_request *ctreq; | |
2042 | struct lpfc_dmabuf *txbmp; | |
2043 | struct ulp_bde64 *txbpl = NULL; | |
2044 | struct lpfc_dmabufext *txbuffer = NULL; | |
2045 | struct list_head head; | |
2046 | struct lpfc_dmabuf *curr; | |
2047 | uint16_t txxri, rxxri; | |
2048 | uint32_t num_bde; | |
2049 | uint8_t *ptr = NULL, *rx_databuf = NULL; | |
2050 | int rc = 0; | |
2051 | unsigned long flags; | |
2052 | void *dataout = NULL; | |
2053 | uint32_t total_mem; | |
2054 | ||
2055 | /* in case no data is returned return just the return code */ | |
2056 | job->reply->reply_payload_rcv_len = 0; | |
2057 | ||
2058 | if (job->request_len < | |
2059 | sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_test)) { | |
2060 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
2061 | "2739 Received DIAG TEST request below minimum " | |
2062 | "size\n"); | |
2063 | rc = -EINVAL; | |
2064 | goto loopback_test_exit; | |
2065 | } | |
2066 | ||
2067 | if (job->request_payload.payload_len != | |
2068 | job->reply_payload.payload_len) { | |
2069 | rc = -EINVAL; | |
2070 | goto loopback_test_exit; | |
2071 | } | |
2072 | ||
2073 | diag_mode = (struct diag_mode_test *) | |
2074 | job->request->rqst_data.h_vendor.vendor_cmd; | |
2075 | ||
2076 | if ((phba->link_state == LPFC_HBA_ERROR) || | |
2077 | (psli->sli_flag & LPFC_BLOCK_MGMT_IO) || | |
2078 | (!(psli->sli_flag & LPFC_SLI_ACTIVE))) { | |
2079 | rc = -EACCES; | |
2080 | goto loopback_test_exit; | |
2081 | } | |
2082 | ||
2083 | if (!lpfc_is_link_up(phba) || !(phba->link_flag & LS_LOOPBACK_MODE)) { | |
2084 | rc = -EACCES; | |
2085 | goto loopback_test_exit; | |
2086 | } | |
2087 | ||
2088 | size = job->request_payload.payload_len; | |
2089 | full_size = size + ELX_LOOPBACK_HEADER_SZ; /* plus the header */ | |
2090 | ||
2091 | if ((size == 0) || (size > 80 * BUF_SZ_4K)) { | |
2092 | rc = -ERANGE; | |
2093 | goto loopback_test_exit; | |
2094 | } | |
2095 | ||
2096 | if (size >= BUF_SZ_4K) { | |
2097 | /* | |
2098 | * Allocate memory for ioctl data. If buffer is bigger than 64k, | |
2099 | * then we allocate 64k and re-use that buffer over and over to | |
2100 | * xfer the whole block. This is because Linux kernel has a | |
2101 | * problem allocating more than 120k of kernel space memory. Saw | |
2102 | * problem with GET_FCPTARGETMAPPING... | |
2103 | */ | |
2104 | if (size <= (64 * 1024)) | |
2105 | total_mem = size; | |
2106 | else | |
2107 | total_mem = 64 * 1024; | |
2108 | } else | |
2109 | /* Allocate memory for ioctl data */ | |
2110 | total_mem = BUF_SZ_4K; | |
2111 | ||
2112 | dataout = kmalloc(total_mem, GFP_KERNEL); | |
2113 | if (dataout == NULL) { | |
2114 | rc = -ENOMEM; | |
2115 | goto loopback_test_exit; | |
2116 | } | |
2117 | ||
2118 | ptr = dataout; | |
2119 | ptr += ELX_LOOPBACK_HEADER_SZ; | |
2120 | sg_copy_to_buffer(job->request_payload.sg_list, | |
2121 | job->request_payload.sg_cnt, | |
2122 | ptr, size); | |
2123 | ||
2124 | rc = lpfcdiag_loop_self_reg(phba, &rpi); | |
2125 | if (rc) { | |
2126 | rc = -ENOMEM; | |
2127 | goto loopback_test_exit; | |
2128 | } | |
2129 | ||
2130 | rc = lpfcdiag_loop_get_xri(phba, rpi, &txxri, &rxxri); | |
2131 | if (rc) { | |
2132 | lpfcdiag_loop_self_unreg(phba, rpi); | |
2133 | rc = -ENOMEM; | |
2134 | goto loopback_test_exit; | |
2135 | } | |
2136 | ||
2137 | rc = lpfcdiag_loop_post_rxbufs(phba, rxxri, full_size); | |
2138 | if (rc) { | |
2139 | lpfcdiag_loop_self_unreg(phba, rpi); | |
2140 | rc = -ENOMEM; | |
2141 | goto loopback_test_exit; | |
2142 | } | |
2143 | ||
2144 | evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid, | |
2145 | SLI_CT_ELX_LOOPBACK); | |
2146 | if (!evt) { | |
2147 | lpfcdiag_loop_self_unreg(phba, rpi); | |
2148 | rc = -ENOMEM; | |
2149 | goto loopback_test_exit; | |
2150 | } | |
2151 | ||
2152 | spin_lock_irqsave(&phba->ct_ev_lock, flags); | |
2153 | list_add(&evt->node, &phba->ct_ev_waiters); | |
2154 | lpfc_bsg_event_ref(evt); | |
2155 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); | |
2156 | ||
2157 | cmdiocbq = lpfc_sli_get_iocbq(phba); | |
2158 | rspiocbq = lpfc_sli_get_iocbq(phba); | |
2159 | txbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); | |
2160 | ||
2161 | if (txbmp) { | |
2162 | txbmp->virt = lpfc_mbuf_alloc(phba, 0, &txbmp->phys); | |
2163 | INIT_LIST_HEAD(&txbmp->list); | |
2164 | txbpl = (struct ulp_bde64 *) txbmp->virt; | |
2165 | if (txbpl) | |
2166 | txbuffer = diag_cmd_data_alloc(phba, | |
2167 | txbpl, full_size, 0); | |
2168 | } | |
2169 | ||
2170 | if (!cmdiocbq || !rspiocbq || !txbmp || !txbpl || !txbuffer) { | |
2171 | rc = -ENOMEM; | |
2172 | goto err_loopback_test_exit; | |
2173 | } | |
2174 | ||
2175 | cmd = &cmdiocbq->iocb; | |
2176 | rsp = &rspiocbq->iocb; | |
2177 | ||
2178 | INIT_LIST_HEAD(&head); | |
2179 | list_add_tail(&head, &txbuffer->dma.list); | |
2180 | list_for_each_entry(curr, &head, list) { | |
2181 | segment_len = ((struct lpfc_dmabufext *)curr)->size; | |
2182 | if (current_offset == 0) { | |
2183 | ctreq = curr->virt; | |
2184 | memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ); | |
2185 | ctreq->RevisionId.bits.Revision = SLI_CT_REVISION; | |
2186 | ctreq->RevisionId.bits.InId = 0; | |
2187 | ctreq->FsType = SLI_CT_ELX_LOOPBACK; | |
2188 | ctreq->FsSubType = 0; | |
2189 | ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_DATA; | |
2190 | ctreq->CommandResponse.bits.Size = size; | |
2191 | segment_offset = ELX_LOOPBACK_HEADER_SZ; | |
2192 | } else | |
2193 | segment_offset = 0; | |
2194 | ||
2195 | BUG_ON(segment_offset >= segment_len); | |
2196 | memcpy(curr->virt + segment_offset, | |
2197 | ptr + current_offset, | |
2198 | segment_len - segment_offset); | |
2199 | ||
2200 | current_offset += segment_len - segment_offset; | |
2201 | BUG_ON(current_offset > size); | |
2202 | } | |
2203 | list_del(&head); | |
2204 | ||
2205 | /* Build the XMIT_SEQUENCE iocb */ | |
2206 | ||
2207 | num_bde = (uint32_t)txbuffer->flag; | |
2208 | ||
2209 | cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(txbmp->phys); | |
2210 | cmd->un.xseq64.bdl.addrLow = putPaddrLow(txbmp->phys); | |
2211 | cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64; | |
2212 | cmd->un.xseq64.bdl.bdeSize = (num_bde * sizeof(struct ulp_bde64)); | |
2213 | ||
2214 | cmd->un.xseq64.w5.hcsw.Fctl = (LS | LA); | |
2215 | cmd->un.xseq64.w5.hcsw.Dfctl = 0; | |
2216 | cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL; | |
2217 | cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT; | |
2218 | ||
2219 | cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX; | |
2220 | cmd->ulpBdeCount = 1; | |
2221 | cmd->ulpLe = 1; | |
2222 | cmd->ulpClass = CLASS3; | |
2223 | cmd->ulpContext = txxri; | |
2224 | ||
2225 | cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC; | |
2226 | cmdiocbq->vport = phba->pport; | |
2227 | ||
2228 | rc = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq, rspiocbq, | |
2229 | (phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT); | |
2230 | ||
2231 | if ((rc != IOCB_SUCCESS) || (rsp->ulpStatus != IOCB_SUCCESS)) { | |
2232 | rc = -EIO; | |
2233 | goto err_loopback_test_exit; | |
2234 | } | |
2235 | ||
2236 | evt->waiting = 1; | |
2237 | rc = wait_event_interruptible_timeout( | |
2238 | evt->wq, !list_empty(&evt->events_to_see), | |
2239 | ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT) * HZ); | |
2240 | evt->waiting = 0; | |
2241 | if (list_empty(&evt->events_to_see)) | |
2242 | rc = (rc) ? -EINTR : -ETIMEDOUT; | |
2243 | else { | |
2244 | spin_lock_irqsave(&phba->ct_ev_lock, flags); | |
2245 | list_move(evt->events_to_see.prev, &evt->events_to_get); | |
2246 | evdat = list_entry(evt->events_to_get.prev, | |
2247 | typeof(*evdat), node); | |
2248 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); | |
2249 | rx_databuf = evdat->data; | |
2250 | if (evdat->len != full_size) { | |
2251 | lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC, | |
2252 | "1603 Loopback test did not receive expected " | |
2253 | "data length. actual length 0x%x expected " | |
2254 | "length 0x%x\n", | |
2255 | evdat->len, full_size); | |
2256 | rc = -EIO; | |
2257 | } else if (rx_databuf == NULL) | |
2258 | rc = -EIO; | |
2259 | else { | |
2260 | rc = IOCB_SUCCESS; | |
2261 | /* skip over elx loopback header */ | |
2262 | rx_databuf += ELX_LOOPBACK_HEADER_SZ; | |
2263 | job->reply->reply_payload_rcv_len = | |
2264 | sg_copy_from_buffer(job->reply_payload.sg_list, | |
2265 | job->reply_payload.sg_cnt, | |
2266 | rx_databuf, size); | |
2267 | job->reply->reply_payload_rcv_len = size; | |
2268 | } | |
2269 | } | |
2270 | ||
2271 | err_loopback_test_exit: | |
2272 | lpfcdiag_loop_self_unreg(phba, rpi); | |
2273 | ||
2274 | spin_lock_irqsave(&phba->ct_ev_lock, flags); | |
2275 | lpfc_bsg_event_unref(evt); /* release ref */ | |
2276 | lpfc_bsg_event_unref(evt); /* delete */ | |
2277 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); | |
2278 | ||
2279 | if (cmdiocbq != NULL) | |
2280 | lpfc_sli_release_iocbq(phba, cmdiocbq); | |
2281 | ||
2282 | if (rspiocbq != NULL) | |
2283 | lpfc_sli_release_iocbq(phba, rspiocbq); | |
2284 | ||
2285 | if (txbmp != NULL) { | |
2286 | if (txbpl != NULL) { | |
2287 | if (txbuffer != NULL) | |
2288 | diag_cmd_data_free(phba, txbuffer); | |
2289 | lpfc_mbuf_free(phba, txbmp->virt, txbmp->phys); | |
2290 | } | |
2291 | kfree(txbmp); | |
2292 | } | |
2293 | ||
2294 | loopback_test_exit: | |
2295 | kfree(dataout); | |
2296 | /* make error code available to userspace */ | |
2297 | job->reply->result = rc; | |
2298 | job->dd_data = NULL; | |
2299 | /* complete the job back to userspace if no error */ | |
2300 | if (rc == 0) | |
2301 | job->job_done(job); | |
2302 | return rc; | |
2303 | } | |
2304 | ||
2305 | /** | |
2306 | * lpfc_bsg_get_dfc_rev - process a GET_DFC_REV bsg vendor command | |
2307 | * @job: GET_DFC_REV fc_bsg_job | |
2308 | **/ | |
2309 | static int | |
2310 | lpfc_bsg_get_dfc_rev(struct fc_bsg_job *job) | |
2311 | { | |
2312 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; | |
2313 | struct lpfc_hba *phba = vport->phba; | |
2314 | struct get_mgmt_rev *event_req; | |
2315 | struct get_mgmt_rev_reply *event_reply; | |
2316 | int rc = 0; | |
2317 | ||
2318 | if (job->request_len < | |
2319 | sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev)) { | |
2320 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
2321 | "2740 Received GET_DFC_REV request below " | |
2322 | "minimum size\n"); | |
2323 | rc = -EINVAL; | |
2324 | goto job_error; | |
2325 | } | |
2326 | ||
2327 | event_req = (struct get_mgmt_rev *) | |
2328 | job->request->rqst_data.h_vendor.vendor_cmd; | |
2329 | ||
2330 | event_reply = (struct get_mgmt_rev_reply *) | |
2331 | job->reply->reply_data.vendor_reply.vendor_rsp; | |
2332 | ||
2333 | if (job->reply_len < | |
2334 | sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev_reply)) { | |
2335 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
2336 | "2741 Received GET_DFC_REV reply below " | |
2337 | "minimum size\n"); | |
2338 | rc = -EINVAL; | |
2339 | goto job_error; | |
2340 | } | |
2341 | ||
2342 | event_reply->info.a_Major = MANAGEMENT_MAJOR_REV; | |
2343 | event_reply->info.a_Minor = MANAGEMENT_MINOR_REV; | |
2344 | job_error: | |
2345 | job->reply->result = rc; | |
2346 | if (rc == 0) | |
2347 | job->job_done(job); | |
2348 | return rc; | |
2349 | } | |
2350 | ||
2351 | /** | |
2352 | * lpfc_bsg_wake_mbox_wait - lpfc_bsg_issue_mbox mbox completion handler | |
2353 | * @phba: Pointer to HBA context object. | |
2354 | * @pmboxq: Pointer to mailbox command. | |
2355 | * | |
2356 | * This is completion handler function for mailbox commands issued from | |
2357 | * lpfc_bsg_issue_mbox function. This function is called by the | |
2358 | * mailbox event handler function with no lock held. This function | |
2359 | * will wake up thread waiting on the wait queue pointed by context1 | |
2360 | * of the mailbox. | |
2361 | **/ | |
2362 | void | |
2363 | lpfc_bsg_wake_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq) | |
2364 | { | |
2365 | struct bsg_job_data *dd_data; | |
2366 | MAILBOX_t *pmb; | |
2367 | MAILBOX_t *mb; | |
2368 | struct fc_bsg_job *job; | |
2369 | uint32_t size; | |
2370 | unsigned long flags; | |
2371 | ||
2372 | spin_lock_irqsave(&phba->ct_ev_lock, flags); | |
2373 | dd_data = pmboxq->context1; | |
2374 | if (!dd_data) { | |
2375 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); | |
2376 | return; | |
2377 | } | |
2378 | ||
2379 | pmb = &dd_data->context_un.mbox.pmboxq->u.mb; | |
2380 | mb = dd_data->context_un.mbox.mb; | |
2381 | job = dd_data->context_un.mbox.set_job; | |
2382 | memcpy(mb, pmb, sizeof(*pmb)); | |
2383 | size = job->request_payload.payload_len; | |
2384 | job->reply->reply_payload_rcv_len = | |
2385 | sg_copy_from_buffer(job->reply_payload.sg_list, | |
2386 | job->reply_payload.sg_cnt, | |
2387 | mb, size); | |
2388 | job->reply->result = 0; | |
2389 | dd_data->context_un.mbox.set_job = NULL; | |
2390 | job->dd_data = NULL; | |
2391 | job->job_done(job); | |
2392 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); | |
2393 | mempool_free(dd_data->context_un.mbox.pmboxq, phba->mbox_mem_pool); | |
2394 | kfree(mb); | |
2395 | kfree(dd_data); | |
2396 | return; | |
2397 | } | |
2398 | ||
2399 | /** | |
2400 | * lpfc_bsg_check_cmd_access - test for a supported mailbox command | |
2401 | * @phba: Pointer to HBA context object. | |
2402 | * @mb: Pointer to a mailbox object. | |
2403 | * @vport: Pointer to a vport object. | |
2404 | * | |
2405 | * Some commands require the port to be offline, some may not be called from | |
2406 | * the application. | |
2407 | **/ | |
2408 | static int lpfc_bsg_check_cmd_access(struct lpfc_hba *phba, | |
2409 | MAILBOX_t *mb, struct lpfc_vport *vport) | |
2410 | { | |
2411 | /* return negative error values for bsg job */ | |
2412 | switch (mb->mbxCommand) { | |
2413 | /* Offline only */ | |
2414 | case MBX_INIT_LINK: | |
2415 | case MBX_DOWN_LINK: | |
2416 | case MBX_CONFIG_LINK: | |
2417 | case MBX_CONFIG_RING: | |
2418 | case MBX_RESET_RING: | |
2419 | case MBX_UNREG_LOGIN: | |
2420 | case MBX_CLEAR_LA: | |
2421 | case MBX_DUMP_CONTEXT: | |
2422 | case MBX_RUN_DIAGS: | |
2423 | case MBX_RESTART: | |
2424 | case MBX_SET_MASK: | |
2425 | if (!(vport->fc_flag & FC_OFFLINE_MODE)) { | |
2426 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
2427 | "2743 Command 0x%x is illegal in on-line " | |
2428 | "state\n", | |
2429 | mb->mbxCommand); | |
2430 | return -EPERM; | |
2431 | } | |
2432 | case MBX_WRITE_NV: | |
2433 | case MBX_WRITE_VPARMS: | |
2434 | case MBX_LOAD_SM: | |
2435 | case MBX_READ_NV: | |
2436 | case MBX_READ_CONFIG: | |
2437 | case MBX_READ_RCONFIG: | |
2438 | case MBX_READ_STATUS: | |
2439 | case MBX_READ_XRI: | |
2440 | case MBX_READ_REV: | |
2441 | case MBX_READ_LNK_STAT: | |
2442 | case MBX_DUMP_MEMORY: | |
2443 | case MBX_DOWN_LOAD: | |
2444 | case MBX_UPDATE_CFG: | |
2445 | case MBX_KILL_BOARD: | |
2446 | case MBX_LOAD_AREA: | |
2447 | case MBX_LOAD_EXP_ROM: | |
2448 | case MBX_BEACON: | |
2449 | case MBX_DEL_LD_ENTRY: | |
2450 | case MBX_SET_DEBUG: | |
2451 | case MBX_WRITE_WWN: | |
2452 | case MBX_SLI4_CONFIG: | |
2453 | case MBX_READ_EVENT_LOG_STATUS: | |
2454 | case MBX_WRITE_EVENT_LOG: | |
2455 | case MBX_PORT_CAPABILITIES: | |
2456 | case MBX_PORT_IOV_CONTROL: | |
2457 | break; | |
2458 | case MBX_SET_VARIABLE: | |
2459 | case MBX_RUN_BIU_DIAG64: | |
2460 | case MBX_READ_EVENT_LOG: | |
2461 | case MBX_READ_SPARM64: | |
2462 | case MBX_READ_LA: | |
2463 | case MBX_READ_LA64: | |
2464 | case MBX_REG_LOGIN: | |
2465 | case MBX_REG_LOGIN64: | |
2466 | case MBX_CONFIG_PORT: | |
2467 | case MBX_RUN_BIU_DIAG: | |
2468 | default: | |
2469 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
2470 | "2742 Unknown Command 0x%x\n", | |
2471 | mb->mbxCommand); | |
2472 | return -EPERM; | |
2473 | } | |
2474 | ||
2475 | return 0; /* ok */ | |
2476 | } | |
2477 | ||
2478 | /** | |
2479 | * lpfc_bsg_issue_mbox - issues a mailbox command on behalf of an app | |
2480 | * @phba: Pointer to HBA context object. | |
2481 | * @mb: Pointer to a mailbox object. | |
2482 | * @vport: Pointer to a vport object. | |
2483 | * | |
2484 | * Allocate a tracking object, mailbox command memory, get a mailbox | |
2485 | * from the mailbox pool, copy the caller mailbox command. | |
2486 | * | |
2487 | * If offline and the sli is active we need to poll for the command (port is | |
2488 | * being reset) and com-plete the job, otherwise issue the mailbox command and | |
2489 | * let our completion handler finish the command. | |
2490 | **/ | |
2491 | static uint32_t | |
2492 | lpfc_bsg_issue_mbox(struct lpfc_hba *phba, struct fc_bsg_job *job, | |
2493 | struct lpfc_vport *vport) | |
2494 | { | |
2495 | LPFC_MBOXQ_t *pmboxq; | |
2496 | MAILBOX_t *pmb; | |
2497 | MAILBOX_t *mb; | |
2498 | struct bsg_job_data *dd_data; | |
2499 | uint32_t size; | |
2500 | int rc = 0; | |
2501 | ||
2502 | /* allocate our bsg tracking structure */ | |
2503 | dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL); | |
2504 | if (!dd_data) { | |
2505 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
2506 | "2727 Failed allocation of dd_data\n"); | |
2507 | return -ENOMEM; | |
2508 | } | |
2509 | ||
2510 | mb = kzalloc(PAGE_SIZE, GFP_KERNEL); | |
2511 | if (!mb) { | |
2512 | kfree(dd_data); | |
2513 | return -ENOMEM; | |
2514 | } | |
2515 | ||
2516 | pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); | |
2517 | if (!pmboxq) { | |
2518 | kfree(dd_data); | |
2519 | kfree(mb); | |
2520 | return -ENOMEM; | |
2521 | } | |
2522 | ||
2523 | size = job->request_payload.payload_len; | |
2524 | job->reply->reply_payload_rcv_len = | |
2525 | sg_copy_to_buffer(job->request_payload.sg_list, | |
2526 | job->request_payload.sg_cnt, | |
2527 | mb, size); | |
2528 | ||
2529 | rc = lpfc_bsg_check_cmd_access(phba, mb, vport); | |
2530 | if (rc != 0) { | |
2531 | kfree(dd_data); | |
2532 | kfree(mb); | |
2533 | mempool_free(pmboxq, phba->mbox_mem_pool); | |
2534 | return rc; /* must be negative */ | |
2535 | } | |
2536 | ||
2537 | memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t)); | |
2538 | pmb = &pmboxq->u.mb; | |
2539 | memcpy(pmb, mb, sizeof(*pmb)); | |
2540 | pmb->mbxOwner = OWN_HOST; | |
2541 | pmboxq->context1 = NULL; | |
2542 | pmboxq->vport = vport; | |
2543 | ||
2544 | if ((vport->fc_flag & FC_OFFLINE_MODE) || | |
2545 | (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE))) { | |
2546 | rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL); | |
2547 | if (rc != MBX_SUCCESS) { | |
2548 | if (rc != MBX_TIMEOUT) { | |
2549 | kfree(dd_data); | |
2550 | kfree(mb); | |
2551 | mempool_free(pmboxq, phba->mbox_mem_pool); | |
2552 | } | |
2553 | return (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV; | |
2554 | } | |
2555 | ||
2556 | memcpy(mb, pmb, sizeof(*pmb)); | |
2557 | job->reply->reply_payload_rcv_len = | |
2558 | sg_copy_from_buffer(job->reply_payload.sg_list, | |
2559 | job->reply_payload.sg_cnt, | |
2560 | mb, size); | |
2561 | kfree(dd_data); | |
2562 | kfree(mb); | |
2563 | mempool_free(pmboxq, phba->mbox_mem_pool); | |
2564 | /* not waiting mbox already done */ | |
2565 | return 0; | |
2566 | } | |
2567 | ||
2568 | /* setup wake call as IOCB callback */ | |
2569 | pmboxq->mbox_cmpl = lpfc_bsg_wake_mbox_wait; | |
2570 | /* setup context field to pass wait_queue pointer to wake function */ | |
2571 | pmboxq->context1 = dd_data; | |
2572 | dd_data->type = TYPE_MBOX; | |
2573 | dd_data->context_un.mbox.pmboxq = pmboxq; | |
2574 | dd_data->context_un.mbox.mb = mb; | |
2575 | dd_data->context_un.mbox.set_job = job; | |
2576 | job->dd_data = dd_data; | |
2577 | rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT); | |
2578 | if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) { | |
2579 | kfree(dd_data); | |
2580 | kfree(mb); | |
2581 | mempool_free(pmboxq, phba->mbox_mem_pool); | |
2582 | return -EIO; | |
2583 | } | |
2584 | ||
2585 | return 1; | |
2586 | } | |
2587 | ||
2588 | /** | |
2589 | * lpfc_bsg_mbox_cmd - process an fc bsg LPFC_BSG_VENDOR_MBOX command | |
2590 | * @job: MBOX fc_bsg_job for LPFC_BSG_VENDOR_MBOX. | |
2591 | **/ | |
2592 | static int | |
2593 | lpfc_bsg_mbox_cmd(struct fc_bsg_job *job) | |
2594 | { | |
2595 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; | |
2596 | struct lpfc_hba *phba = vport->phba; | |
2597 | int rc = 0; | |
2598 | ||
2599 | /* in case no data is transferred */ | |
2600 | job->reply->reply_payload_rcv_len = 0; | |
2601 | if (job->request_len < | |
2602 | sizeof(struct fc_bsg_request) + sizeof(struct dfc_mbox_req)) { | |
2603 | lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC, | |
2604 | "2737 Received MBOX_REQ request below " | |
2605 | "minimum size\n"); | |
2606 | rc = -EINVAL; | |
2607 | goto job_error; | |
2608 | } | |
2609 | ||
2610 | if (job->request_payload.payload_len != PAGE_SIZE) { | |
2611 | rc = -EINVAL; | |
2612 | goto job_error; | |
2613 | } | |
2614 | ||
2615 | if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) { | |
2616 | rc = -EAGAIN; | |
2617 | goto job_error; | |
2618 | } | |
2619 | ||
2620 | rc = lpfc_bsg_issue_mbox(phba, job, vport); | |
2621 | ||
2622 | job_error: | |
2623 | if (rc == 0) { | |
2624 | /* job done */ | |
2625 | job->reply->result = 0; | |
2626 | job->dd_data = NULL; | |
2627 | job->job_done(job); | |
2628 | } else if (rc == 1) | |
2629 | /* job submitted, will complete later*/ | |
2630 | rc = 0; /* return zero, no error */ | |
2631 | else { | |
2632 | /* some error occurred */ | |
2633 | job->reply->result = rc; | |
2634 | job->dd_data = NULL; | |
2635 | } | |
2636 | ||
2637 | return rc; | |
2638 | } | |
2639 | ||
2640 | /** | |
2641 | * lpfc_bsg_hst_vendor - process a vendor-specific fc_bsg_job | |
2642 | * @job: fc_bsg_job to handle | |
2643 | **/ | |
2644 | static int | |
2645 | lpfc_bsg_hst_vendor(struct fc_bsg_job *job) | |
2646 | { | |
2647 | int command = job->request->rqst_data.h_vendor.vendor_cmd[0]; | |
2648 | int rc; | |
2649 | ||
2650 | switch (command) { | |
2651 | case LPFC_BSG_VENDOR_SET_CT_EVENT: | |
2652 | rc = lpfc_bsg_hba_set_event(job); | |
2653 | break; | |
2654 | case LPFC_BSG_VENDOR_GET_CT_EVENT: | |
2655 | rc = lpfc_bsg_hba_get_event(job); | |
2656 | break; | |
2657 | case LPFC_BSG_VENDOR_SEND_MGMT_RESP: | |
2658 | rc = lpfc_bsg_send_mgmt_rsp(job); | |
2659 | break; | |
2660 | case LPFC_BSG_VENDOR_DIAG_MODE: | |
2661 | rc = lpfc_bsg_diag_mode(job); | |
2662 | break; | |
2663 | case LPFC_BSG_VENDOR_DIAG_TEST: | |
2664 | rc = lpfc_bsg_diag_test(job); | |
2665 | break; | |
2666 | case LPFC_BSG_VENDOR_GET_MGMT_REV: | |
2667 | rc = lpfc_bsg_get_dfc_rev(job); | |
2668 | break; | |
2669 | case LPFC_BSG_VENDOR_MBOX: | |
2670 | rc = lpfc_bsg_mbox_cmd(job); | |
2671 | break; | |
2672 | default: | |
2673 | rc = -EINVAL; | |
2674 | job->reply->reply_payload_rcv_len = 0; | |
2675 | /* make error code available to userspace */ | |
2676 | job->reply->result = rc; | |
2677 | break; | |
2678 | } | |
2679 | ||
2680 | return rc; | |
2681 | } | |
2682 | ||
2683 | /** | |
2684 | * lpfc_bsg_request - handle a bsg request from the FC transport | |
2685 | * @job: fc_bsg_job to handle | |
2686 | **/ | |
2687 | int | |
2688 | lpfc_bsg_request(struct fc_bsg_job *job) | |
2689 | { | |
2690 | uint32_t msgcode; | |
2691 | int rc; | |
2692 | ||
2693 | msgcode = job->request->msgcode; | |
2694 | switch (msgcode) { | |
2695 | case FC_BSG_HST_VENDOR: | |
2696 | rc = lpfc_bsg_hst_vendor(job); | |
2697 | break; | |
2698 | case FC_BSG_RPT_ELS: | |
2699 | rc = lpfc_bsg_rport_els(job); | |
2700 | break; | |
2701 | case FC_BSG_RPT_CT: | |
2702 | rc = lpfc_bsg_send_mgmt_cmd(job); | |
2703 | break; | |
2704 | default: | |
2705 | rc = -EINVAL; | |
2706 | job->reply->reply_payload_rcv_len = 0; | |
2707 | /* make error code available to userspace */ | |
2708 | job->reply->result = rc; | |
2709 | break; | |
2710 | } | |
2711 | ||
2712 | return rc; | |
2713 | } | |
2714 | ||
2715 | /** | |
2716 | * lpfc_bsg_timeout - handle timeout of a bsg request from the FC transport | |
2717 | * @job: fc_bsg_job that has timed out | |
2718 | * | |
2719 | * This function just aborts the job's IOCB. The aborted IOCB will return to | |
2720 | * the waiting function which will handle passing the error back to userspace | |
2721 | **/ | |
2722 | int | |
2723 | lpfc_bsg_timeout(struct fc_bsg_job *job) | |
2724 | { | |
2725 | struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata; | |
2726 | struct lpfc_hba *phba = vport->phba; | |
2727 | struct lpfc_iocbq *cmdiocb; | |
2728 | struct lpfc_bsg_event *evt; | |
2729 | struct lpfc_bsg_iocb *iocb; | |
2730 | struct lpfc_bsg_mbox *mbox; | |
2731 | struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; | |
2732 | struct bsg_job_data *dd_data; | |
2733 | unsigned long flags; | |
2734 | ||
2735 | spin_lock_irqsave(&phba->ct_ev_lock, flags); | |
2736 | dd_data = (struct bsg_job_data *)job->dd_data; | |
2737 | /* timeout and completion crossed paths if no dd_data */ | |
2738 | if (!dd_data) { | |
2739 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); | |
2740 | return 0; | |
4cc0e56e JS |
2741 | } |
2742 | ||
2743 | switch (dd_data->type) { | |
2744 | case TYPE_IOCB: | |
2745 | iocb = &dd_data->context_un.iocb; | |
2746 | cmdiocb = iocb->cmdiocbq; | |
2747 | /* hint to completion handler that the job timed out */ | |
2748 | job->reply->result = -EAGAIN; | |
2749 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); | |
2750 | /* this will call our completion handler */ | |
2751 | spin_lock_irq(&phba->hbalock); | |
f1c3b0fc | 2752 | lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb); |
4cc0e56e JS |
2753 | spin_unlock_irq(&phba->hbalock); |
2754 | break; | |
2755 | case TYPE_EVT: | |
2756 | evt = dd_data->context_un.evt; | |
2757 | /* this event has no job anymore */ | |
2758 | evt->set_job = NULL; | |
2759 | job->dd_data = NULL; | |
2760 | job->reply->reply_payload_rcv_len = 0; | |
2761 | /* Return -EAGAIN which is our way of signallying the | |
2762 | * app to retry. | |
2763 | */ | |
2764 | job->reply->result = -EAGAIN; | |
2765 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); | |
2766 | job->job_done(job); | |
2767 | break; | |
3b5dd52a JS |
2768 | case TYPE_MBOX: |
2769 | mbox = &dd_data->context_un.mbox; | |
2770 | /* this mbox has no job anymore */ | |
2771 | mbox->set_job = NULL; | |
2772 | job->dd_data = NULL; | |
2773 | job->reply->reply_payload_rcv_len = 0; | |
2774 | job->reply->result = -EAGAIN; | |
2775 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); | |
2776 | job->job_done(job); | |
2777 | break; | |
4cc0e56e JS |
2778 | default: |
2779 | spin_unlock_irqrestore(&phba->ct_ev_lock, flags); | |
2780 | break; | |
2781 | } | |
f1c3b0fc | 2782 | |
4cc0e56e JS |
2783 | /* scsi transport fc fc_bsg_job_timeout expects a zero return code, |
2784 | * otherwise an error message will be displayed on the console | |
2785 | * so always return success (zero) | |
2786 | */ | |
f1c3b0fc JS |
2787 | return 0; |
2788 | } |