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01649561 JS |
1 | /******************************************************************* |
2 | * This file is part of the Emulex Linux Device Driver for * | |
3 | * Fibre Channel Host Bus Adapters. * | |
d080abe0 JS |
4 | * Copyright (C) 2017 Broadcom. All Rights Reserved. The term * |
5 | * “Broadcom” refers to Broadcom Limited and/or its subsidiaries. * | |
01649561 JS |
6 | * Copyright (C) 2004-2016 Emulex. All rights reserved. * |
7 | * EMULEX and SLI are trademarks of Emulex. * | |
d080abe0 | 8 | * www.broadcom.com * |
01649561 JS |
9 | * Portions Copyright (C) 2004-2005 Christoph Hellwig * |
10 | * * | |
11 | * This program is free software; you can redistribute it and/or * | |
12 | * modify it under the terms of version 2 of the GNU General * | |
13 | * Public License as published by the Free Software Foundation. * | |
14 | * This program is distributed in the hope that it will be useful. * | |
15 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * | |
16 | * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * | |
17 | * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * | |
18 | * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * | |
19 | * TO BE LEGALLY INVALID. See the GNU General Public License for * | |
20 | * more details, a copy of which can be found in the file COPYING * | |
21 | * included with this package. * | |
22 | ********************************************************************/ | |
23 | #include <linux/pci.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/interrupt.h> | |
26 | #include <linux/delay.h> | |
27 | #include <asm/unaligned.h> | |
28 | #include <linux/crc-t10dif.h> | |
29 | #include <net/checksum.h> | |
30 | ||
31 | #include <scsi/scsi.h> | |
32 | #include <scsi/scsi_device.h> | |
33 | #include <scsi/scsi_eh.h> | |
34 | #include <scsi/scsi_host.h> | |
35 | #include <scsi/scsi_tcq.h> | |
36 | #include <scsi/scsi_transport_fc.h> | |
37 | #include <scsi/fc/fc_fs.h> | |
38 | ||
39 | #include <linux/nvme.h> | |
40 | #include <linux/nvme-fc-driver.h> | |
41 | #include <linux/nvme-fc.h> | |
42 | #include "lpfc_version.h" | |
43 | #include "lpfc_hw4.h" | |
44 | #include "lpfc_hw.h" | |
45 | #include "lpfc_sli.h" | |
46 | #include "lpfc_sli4.h" | |
47 | #include "lpfc_nl.h" | |
48 | #include "lpfc_disc.h" | |
49 | #include "lpfc.h" | |
50 | #include "lpfc_nvme.h" | |
51 | #include "lpfc_scsi.h" | |
52 | #include "lpfc_logmsg.h" | |
53 | #include "lpfc_crtn.h" | |
54 | #include "lpfc_vport.h" | |
bd2cdd5e | 55 | #include "lpfc_debugfs.h" |
01649561 JS |
56 | |
57 | /* NVME initiator-based functions */ | |
58 | ||
59 | static struct lpfc_nvme_buf * | |
cf1a1d3e JS |
60 | lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, |
61 | int expedite); | |
01649561 JS |
62 | |
63 | static void | |
64 | lpfc_release_nvme_buf(struct lpfc_hba *, struct lpfc_nvme_buf *); | |
65 | ||
81e6a637 | 66 | static struct nvme_fc_port_template lpfc_nvme_template; |
01649561 JS |
67 | |
68 | /** | |
69 | * lpfc_nvme_create_queue - | |
70 | * @lpfc_pnvme: Pointer to the driver's nvme instance data | |
71 | * @qidx: An cpu index used to affinitize IO queues and MSIX vectors. | |
72 | * @handle: An opaque driver handle used in follow-up calls. | |
73 | * | |
74 | * Driver registers this routine to preallocate and initialize any | |
75 | * internal data structures to bind the @qidx to its internal IO queues. | |
76 | * A hardware queue maps (qidx) to a specific driver MSI-X vector/EQ/CQ/WQ. | |
77 | * | |
78 | * Return value : | |
79 | * 0 - Success | |
80 | * -EINVAL - Unsupported input value. | |
81 | * -ENOMEM - Could not alloc necessary memory | |
82 | **/ | |
83 | static int | |
84 | lpfc_nvme_create_queue(struct nvme_fc_local_port *pnvme_lport, | |
85 | unsigned int qidx, u16 qsize, | |
86 | void **handle) | |
87 | { | |
88 | struct lpfc_nvme_lport *lport; | |
89 | struct lpfc_vport *vport; | |
90 | struct lpfc_nvme_qhandle *qhandle; | |
91 | char *str; | |
92 | ||
c3725bdc JS |
93 | if (!pnvme_lport->private) |
94 | return -ENOMEM; | |
95 | ||
01649561 JS |
96 | lport = (struct lpfc_nvme_lport *)pnvme_lport->private; |
97 | vport = lport->vport; | |
98 | qhandle = kzalloc(sizeof(struct lpfc_nvme_qhandle), GFP_KERNEL); | |
99 | if (qhandle == NULL) | |
100 | return -ENOMEM; | |
101 | ||
102 | qhandle->cpu_id = smp_processor_id(); | |
103 | qhandle->qidx = qidx; | |
104 | /* | |
105 | * NVME qidx == 0 is the admin queue, so both admin queue | |
106 | * and first IO queue will use MSI-X vector and associated | |
107 | * EQ/CQ/WQ at index 0. After that they are sequentially assigned. | |
108 | */ | |
109 | if (qidx) { | |
110 | str = "IO "; /* IO queue */ | |
111 | qhandle->index = ((qidx - 1) % | |
112 | vport->phba->cfg_nvme_io_channel); | |
113 | } else { | |
114 | str = "ADM"; /* Admin queue */ | |
115 | qhandle->index = qidx; | |
116 | } | |
117 | ||
d58734f0 | 118 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, |
01649561 JS |
119 | "6073 Binding %s HdwQueue %d (cpu %d) to " |
120 | "io_channel %d qhandle %p\n", str, | |
121 | qidx, qhandle->cpu_id, qhandle->index, qhandle); | |
122 | *handle = (void *)qhandle; | |
123 | return 0; | |
124 | } | |
125 | ||
126 | /** | |
127 | * lpfc_nvme_delete_queue - | |
128 | * @lpfc_pnvme: Pointer to the driver's nvme instance data | |
129 | * @qidx: An cpu index used to affinitize IO queues and MSIX vectors. | |
130 | * @handle: An opaque driver handle from lpfc_nvme_create_queue | |
131 | * | |
132 | * Driver registers this routine to free | |
133 | * any internal data structures to bind the @qidx to its internal | |
134 | * IO queues. | |
135 | * | |
136 | * Return value : | |
137 | * 0 - Success | |
138 | * TODO: What are the failure codes. | |
139 | **/ | |
140 | static void | |
141 | lpfc_nvme_delete_queue(struct nvme_fc_local_port *pnvme_lport, | |
142 | unsigned int qidx, | |
143 | void *handle) | |
144 | { | |
145 | struct lpfc_nvme_lport *lport; | |
146 | struct lpfc_vport *vport; | |
147 | ||
c3725bdc JS |
148 | if (!pnvme_lport->private) |
149 | return; | |
150 | ||
01649561 JS |
151 | lport = (struct lpfc_nvme_lport *)pnvme_lport->private; |
152 | vport = lport->vport; | |
153 | ||
154 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, | |
155 | "6001 ENTER. lpfc_pnvme %p, qidx x%xi qhandle %p\n", | |
156 | lport, qidx, handle); | |
157 | kfree(handle); | |
158 | } | |
159 | ||
160 | static void | |
161 | lpfc_nvme_localport_delete(struct nvme_fc_local_port *localport) | |
162 | { | |
163 | struct lpfc_nvme_lport *lport = localport->private; | |
164 | ||
add9d6be JS |
165 | lpfc_printf_vlog(lport->vport, KERN_INFO, LOG_NVME, |
166 | "6173 localport %p delete complete\n", | |
167 | lport); | |
168 | ||
01649561 JS |
169 | /* release any threads waiting for the unreg to complete */ |
170 | complete(&lport->lport_unreg_done); | |
171 | } | |
172 | ||
173 | /* lpfc_nvme_remoteport_delete | |
174 | * | |
175 | * @remoteport: Pointer to an nvme transport remoteport instance. | |
176 | * | |
177 | * This is a template downcall. NVME transport calls this function | |
178 | * when it has completed the unregistration of a previously | |
179 | * registered remoteport. | |
180 | * | |
181 | * Return value : | |
182 | * None | |
183 | */ | |
184 | void | |
185 | lpfc_nvme_remoteport_delete(struct nvme_fc_remote_port *remoteport) | |
186 | { | |
187 | struct lpfc_nvme_rport *rport = remoteport->private; | |
188 | struct lpfc_vport *vport; | |
189 | struct lpfc_nodelist *ndlp; | |
190 | ||
191 | ndlp = rport->ndlp; | |
192 | if (!ndlp) | |
193 | goto rport_err; | |
194 | ||
195 | vport = ndlp->vport; | |
196 | if (!vport) | |
197 | goto rport_err; | |
198 | ||
199 | /* Remove this rport from the lport's list - memory is owned by the | |
200 | * transport. Remove the ndlp reference for the NVME transport before | |
7a06dcd3 | 201 | * calling state machine to remove the node. |
01649561 JS |
202 | */ |
203 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, | |
204 | "6146 remoteport delete complete %p\n", | |
205 | remoteport); | |
7a06dcd3 | 206 | ndlp->nrport = NULL; |
01649561 JS |
207 | lpfc_nlp_put(ndlp); |
208 | ||
209 | rport_err: | |
210 | /* This call has to execute as long as the rport is valid. | |
211 | * Release any threads waiting for the unreg to complete. | |
212 | */ | |
213 | complete(&rport->rport_unreg_done); | |
214 | } | |
215 | ||
216 | static void | |
217 | lpfc_nvme_cmpl_gen_req(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, | |
218 | struct lpfc_wcqe_complete *wcqe) | |
219 | { | |
220 | struct lpfc_vport *vport = cmdwqe->vport; | |
221 | uint32_t status; | |
222 | struct nvmefc_ls_req *pnvme_lsreq; | |
223 | struct lpfc_dmabuf *buf_ptr; | |
224 | struct lpfc_nodelist *ndlp; | |
225 | ||
2cee7808 | 226 | atomic_inc(&vport->phba->fc4NvmeLsCmpls); |
01649561 JS |
227 | |
228 | pnvme_lsreq = (struct nvmefc_ls_req *)cmdwqe->context2; | |
229 | status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK; | |
230 | ndlp = (struct lpfc_nodelist *)cmdwqe->context1; | |
231 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, | |
232 | "6047 nvme cmpl Enter " | |
233 | "Data %p DID %x Xri: %x status %x cmd:%p lsreg:%p " | |
234 | "bmp:%p ndlp:%p\n", | |
235 | pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0, | |
236 | cmdwqe->sli4_xritag, status, | |
237 | cmdwqe, pnvme_lsreq, cmdwqe->context3, ndlp); | |
238 | ||
bd2cdd5e JS |
239 | lpfc_nvmeio_data(phba, "NVME LS CMPL: xri x%x stat x%x parm x%x\n", |
240 | cmdwqe->sli4_xritag, status, wcqe->parameter); | |
241 | ||
01649561 JS |
242 | if (cmdwqe->context3) { |
243 | buf_ptr = (struct lpfc_dmabuf *)cmdwqe->context3; | |
244 | lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); | |
245 | kfree(buf_ptr); | |
246 | cmdwqe->context3 = NULL; | |
247 | } | |
248 | if (pnvme_lsreq->done) | |
249 | pnvme_lsreq->done(pnvme_lsreq, status); | |
250 | else | |
251 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, | |
252 | "6046 nvme cmpl without done call back? " | |
253 | "Data %p DID %x Xri: %x status %x\n", | |
254 | pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0, | |
255 | cmdwqe->sli4_xritag, status); | |
256 | if (ndlp) { | |
257 | lpfc_nlp_put(ndlp); | |
258 | cmdwqe->context1 = NULL; | |
259 | } | |
260 | lpfc_sli_release_iocbq(phba, cmdwqe); | |
261 | } | |
262 | ||
263 | static int | |
264 | lpfc_nvme_gen_req(struct lpfc_vport *vport, struct lpfc_dmabuf *bmp, | |
265 | struct lpfc_dmabuf *inp, | |
266 | struct nvmefc_ls_req *pnvme_lsreq, | |
267 | void (*cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, | |
268 | struct lpfc_wcqe_complete *), | |
269 | struct lpfc_nodelist *ndlp, uint32_t num_entry, | |
270 | uint32_t tmo, uint8_t retry) | |
271 | { | |
272 | struct lpfc_hba *phba = vport->phba; | |
273 | union lpfc_wqe *wqe; | |
274 | struct lpfc_iocbq *genwqe; | |
275 | struct ulp_bde64 *bpl; | |
276 | struct ulp_bde64 bde; | |
277 | int i, rc, xmit_len, first_len; | |
278 | ||
279 | /* Allocate buffer for command WQE */ | |
280 | genwqe = lpfc_sli_get_iocbq(phba); | |
281 | if (genwqe == NULL) | |
282 | return 1; | |
283 | ||
284 | wqe = &genwqe->wqe; | |
285 | memset(wqe, 0, sizeof(union lpfc_wqe)); | |
286 | ||
287 | genwqe->context3 = (uint8_t *)bmp; | |
288 | genwqe->iocb_flag |= LPFC_IO_NVME_LS; | |
289 | ||
290 | /* Save for completion so we can release these resources */ | |
291 | genwqe->context1 = lpfc_nlp_get(ndlp); | |
292 | genwqe->context2 = (uint8_t *)pnvme_lsreq; | |
293 | /* Fill in payload, bp points to frame payload */ | |
294 | ||
295 | if (!tmo) | |
296 | /* FC spec states we need 3 * ratov for CT requests */ | |
297 | tmo = (3 * phba->fc_ratov); | |
298 | ||
299 | /* For this command calculate the xmit length of the request bde. */ | |
300 | xmit_len = 0; | |
301 | first_len = 0; | |
302 | bpl = (struct ulp_bde64 *)bmp->virt; | |
303 | for (i = 0; i < num_entry; i++) { | |
304 | bde.tus.w = bpl[i].tus.w; | |
305 | if (bde.tus.f.bdeFlags != BUFF_TYPE_BDE_64) | |
306 | break; | |
307 | xmit_len += bde.tus.f.bdeSize; | |
308 | if (i == 0) | |
309 | first_len = xmit_len; | |
310 | } | |
311 | ||
312 | genwqe->rsvd2 = num_entry; | |
313 | genwqe->hba_wqidx = 0; | |
314 | ||
315 | /* Words 0 - 2 */ | |
316 | wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
317 | wqe->generic.bde.tus.f.bdeSize = first_len; | |
318 | wqe->generic.bde.addrLow = bpl[0].addrLow; | |
319 | wqe->generic.bde.addrHigh = bpl[0].addrHigh; | |
320 | ||
321 | /* Word 3 */ | |
322 | wqe->gen_req.request_payload_len = first_len; | |
323 | ||
324 | /* Word 4 */ | |
325 | ||
326 | /* Word 5 */ | |
327 | bf_set(wqe_dfctl, &wqe->gen_req.wge_ctl, 0); | |
328 | bf_set(wqe_si, &wqe->gen_req.wge_ctl, 1); | |
329 | bf_set(wqe_la, &wqe->gen_req.wge_ctl, 1); | |
8b361639 | 330 | bf_set(wqe_rctl, &wqe->gen_req.wge_ctl, FC_RCTL_ELS4_REQ); |
01649561 JS |
331 | bf_set(wqe_type, &wqe->gen_req.wge_ctl, FC_TYPE_NVME); |
332 | ||
333 | /* Word 6 */ | |
334 | bf_set(wqe_ctxt_tag, &wqe->gen_req.wqe_com, | |
335 | phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); | |
336 | bf_set(wqe_xri_tag, &wqe->gen_req.wqe_com, genwqe->sli4_xritag); | |
337 | ||
338 | /* Word 7 */ | |
339 | bf_set(wqe_tmo, &wqe->gen_req.wqe_com, (vport->phba->fc_ratov-1)); | |
340 | bf_set(wqe_class, &wqe->gen_req.wqe_com, CLASS3); | |
341 | bf_set(wqe_cmnd, &wqe->gen_req.wqe_com, CMD_GEN_REQUEST64_WQE); | |
342 | bf_set(wqe_ct, &wqe->gen_req.wqe_com, SLI4_CT_RPI); | |
343 | ||
344 | /* Word 8 */ | |
345 | wqe->gen_req.wqe_com.abort_tag = genwqe->iotag; | |
346 | ||
347 | /* Word 9 */ | |
348 | bf_set(wqe_reqtag, &wqe->gen_req.wqe_com, genwqe->iotag); | |
349 | ||
350 | /* Word 10 */ | |
351 | bf_set(wqe_dbde, &wqe->gen_req.wqe_com, 1); | |
352 | bf_set(wqe_iod, &wqe->gen_req.wqe_com, LPFC_WQE_IOD_READ); | |
353 | bf_set(wqe_qosd, &wqe->gen_req.wqe_com, 1); | |
354 | bf_set(wqe_lenloc, &wqe->gen_req.wqe_com, LPFC_WQE_LENLOC_NONE); | |
355 | bf_set(wqe_ebde_cnt, &wqe->gen_req.wqe_com, 0); | |
356 | ||
357 | /* Word 11 */ | |
358 | bf_set(wqe_cqid, &wqe->gen_req.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); | |
359 | bf_set(wqe_cmd_type, &wqe->gen_req.wqe_com, OTHER_COMMAND); | |
360 | ||
361 | ||
362 | /* Issue GEN REQ WQE for NPORT <did> */ | |
363 | lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, | |
364 | "6050 Issue GEN REQ WQE to NPORT x%x " | |
365 | "Data: x%x x%x wq:%p lsreq:%p bmp:%p xmit:%d 1st:%d\n", | |
366 | ndlp->nlp_DID, genwqe->iotag, | |
367 | vport->port_state, | |
368 | genwqe, pnvme_lsreq, bmp, xmit_len, first_len); | |
369 | genwqe->wqe_cmpl = cmpl; | |
370 | genwqe->iocb_cmpl = NULL; | |
371 | genwqe->drvrTimeout = tmo + LPFC_DRVR_TIMEOUT; | |
372 | genwqe->vport = vport; | |
373 | genwqe->retry = retry; | |
374 | ||
bd2cdd5e JS |
375 | lpfc_nvmeio_data(phba, "NVME LS XMIT: xri x%x iotag x%x to x%06x\n", |
376 | genwqe->sli4_xritag, genwqe->iotag, ndlp->nlp_DID); | |
377 | ||
01649561 | 378 | rc = lpfc_sli4_issue_wqe(phba, LPFC_ELS_RING, genwqe); |
cd22d605 | 379 | if (rc) { |
01649561 JS |
380 | lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, |
381 | "6045 Issue GEN REQ WQE to NPORT x%x " | |
382 | "Data: x%x x%x\n", | |
383 | ndlp->nlp_DID, genwqe->iotag, | |
384 | vport->port_state); | |
385 | lpfc_sli_release_iocbq(phba, genwqe); | |
386 | return 1; | |
387 | } | |
388 | return 0; | |
389 | } | |
390 | ||
391 | /** | |
392 | * lpfc_nvme_ls_req - Issue an Link Service request | |
393 | * @lpfc_pnvme: Pointer to the driver's nvme instance data | |
394 | * @lpfc_nvme_lport: Pointer to the driver's local port data | |
395 | * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq | |
396 | * | |
397 | * Driver registers this routine to handle any link service request | |
398 | * from the nvme_fc transport to a remote nvme-aware port. | |
399 | * | |
400 | * Return value : | |
401 | * 0 - Success | |
402 | * TODO: What are the failure codes. | |
403 | **/ | |
404 | static int | |
405 | lpfc_nvme_ls_req(struct nvme_fc_local_port *pnvme_lport, | |
406 | struct nvme_fc_remote_port *pnvme_rport, | |
407 | struct nvmefc_ls_req *pnvme_lsreq) | |
408 | { | |
409 | int ret = 0; | |
410 | struct lpfc_nvme_lport *lport; | |
411 | struct lpfc_vport *vport; | |
412 | struct lpfc_nodelist *ndlp; | |
413 | struct ulp_bde64 *bpl; | |
414 | struct lpfc_dmabuf *bmp; | |
ba43c4d0 | 415 | uint16_t ntype, nstate; |
01649561 JS |
416 | |
417 | /* there are two dma buf in the request, actually there is one and | |
418 | * the second one is just the start address + cmd size. | |
419 | * Before calling lpfc_nvme_gen_req these buffers need to be wrapped | |
420 | * in a lpfc_dmabuf struct. When freeing we just free the wrapper | |
421 | * because the nvem layer owns the data bufs. | |
422 | * We do not have to break these packets open, we don't care what is in | |
423 | * them. And we do not have to look at the resonse data, we only care | |
424 | * that we got a response. All of the caring is going to happen in the | |
425 | * nvme-fc layer. | |
426 | */ | |
427 | ||
428 | lport = (struct lpfc_nvme_lport *)pnvme_lport->private; | |
429 | vport = lport->vport; | |
430 | ||
3386f4bd JS |
431 | if (vport->load_flag & FC_UNLOADING) |
432 | return -ENODEV; | |
433 | ||
1abcb371 DK |
434 | if (vport->load_flag & FC_UNLOADING) |
435 | return -ENODEV; | |
436 | ||
01649561 | 437 | ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id); |
ba43c4d0 JS |
438 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { |
439 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, | |
440 | "6051 DID x%06x not an active rport.\n", | |
01649561 | 441 | pnvme_rport->port_id); |
ba43c4d0 JS |
442 | return -ENODEV; |
443 | } | |
444 | ||
445 | /* The remote node has to be a mapped nvme target or an | |
446 | * unmapped nvme initiator or it's an error. | |
447 | */ | |
448 | ntype = ndlp->nlp_type; | |
449 | nstate = ndlp->nlp_state; | |
450 | if ((ntype & NLP_NVME_TARGET && nstate != NLP_STE_MAPPED_NODE) || | |
451 | (ntype & NLP_NVME_INITIATOR && nstate != NLP_STE_UNMAPPED_NODE)) { | |
452 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, | |
453 | "6088 DID x%06x not ready for " | |
454 | "IO. State x%x, Type x%x\n", | |
455 | pnvme_rport->port_id, | |
456 | ndlp->nlp_state, ndlp->nlp_type); | |
457 | return -ENODEV; | |
01649561 JS |
458 | } |
459 | bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); | |
460 | if (!bmp) { | |
461 | ||
462 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, | |
463 | "6044 Could not find node for DID %x\n", | |
464 | pnvme_rport->port_id); | |
465 | return 2; | |
466 | } | |
467 | INIT_LIST_HEAD(&bmp->list); | |
468 | bmp->virt = lpfc_mbuf_alloc(vport->phba, MEM_PRI, &(bmp->phys)); | |
469 | if (!bmp->virt) { | |
470 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, | |
471 | "6042 Could not find node for DID %x\n", | |
472 | pnvme_rport->port_id); | |
473 | kfree(bmp); | |
474 | return 3; | |
475 | } | |
476 | bpl = (struct ulp_bde64 *)bmp->virt; | |
477 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rqstdma)); | |
478 | bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rqstdma)); | |
479 | bpl->tus.f.bdeFlags = 0; | |
480 | bpl->tus.f.bdeSize = pnvme_lsreq->rqstlen; | |
481 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
482 | bpl++; | |
483 | ||
484 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rspdma)); | |
485 | bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rspdma)); | |
486 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
487 | bpl->tus.f.bdeSize = pnvme_lsreq->rsplen; | |
488 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
489 | ||
490 | /* Expand print to include key fields. */ | |
491 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, | |
ba43c4d0 | 492 | "6149 ENTER. lport %p, rport %p lsreq%p rqstlen:%d " |
825c6abb | 493 | "rsplen:%d %pad %pad\n", |
01649561 JS |
494 | pnvme_lport, pnvme_rport, |
495 | pnvme_lsreq, pnvme_lsreq->rqstlen, | |
825c6abb AB |
496 | pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma, |
497 | &pnvme_lsreq->rspdma); | |
01649561 | 498 | |
2cee7808 | 499 | atomic_inc(&vport->phba->fc4NvmeLsRequests); |
01649561 JS |
500 | |
501 | /* Hardcode the wait to 30 seconds. Connections are failing otherwise. | |
502 | * This code allows it all to work. | |
503 | */ | |
504 | ret = lpfc_nvme_gen_req(vport, bmp, pnvme_lsreq->rqstaddr, | |
505 | pnvme_lsreq, lpfc_nvme_cmpl_gen_req, | |
506 | ndlp, 2, 30, 0); | |
507 | if (ret != WQE_SUCCESS) { | |
508 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, | |
509 | "6052 EXIT. issue ls wqe failed lport %p, " | |
510 | "rport %p lsreq%p Status %x DID %x\n", | |
511 | pnvme_lport, pnvme_rport, pnvme_lsreq, | |
512 | ret, ndlp->nlp_DID); | |
513 | lpfc_mbuf_free(vport->phba, bmp->virt, bmp->phys); | |
514 | kfree(bmp); | |
515 | return ret; | |
516 | } | |
517 | ||
518 | /* Stub in routine and return 0 for now. */ | |
519 | return ret; | |
520 | } | |
521 | ||
522 | /** | |
523 | * lpfc_nvme_ls_abort - Issue an Link Service request | |
524 | * @lpfc_pnvme: Pointer to the driver's nvme instance data | |
525 | * @lpfc_nvme_lport: Pointer to the driver's local port data | |
526 | * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq | |
527 | * | |
528 | * Driver registers this routine to handle any link service request | |
529 | * from the nvme_fc transport to a remote nvme-aware port. | |
530 | * | |
531 | * Return value : | |
532 | * 0 - Success | |
533 | * TODO: What are the failure codes. | |
534 | **/ | |
535 | static void | |
536 | lpfc_nvme_ls_abort(struct nvme_fc_local_port *pnvme_lport, | |
537 | struct nvme_fc_remote_port *pnvme_rport, | |
538 | struct nvmefc_ls_req *pnvme_lsreq) | |
539 | { | |
540 | struct lpfc_nvme_lport *lport; | |
541 | struct lpfc_vport *vport; | |
542 | struct lpfc_hba *phba; | |
543 | struct lpfc_nodelist *ndlp; | |
544 | LIST_HEAD(abort_list); | |
545 | struct lpfc_sli_ring *pring; | |
546 | struct lpfc_iocbq *wqe, *next_wqe; | |
547 | ||
548 | lport = (struct lpfc_nvme_lport *)pnvme_lport->private; | |
549 | vport = lport->vport; | |
550 | phba = vport->phba; | |
551 | ||
3386f4bd JS |
552 | if (vport->load_flag & FC_UNLOADING) |
553 | return; | |
554 | ||
01649561 JS |
555 | ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id); |
556 | if (!ndlp) { | |
557 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, | |
558 | "6049 Could not find node for DID %x\n", | |
559 | pnvme_rport->port_id); | |
560 | return; | |
561 | } | |
562 | ||
563 | /* Expand print to include key fields. */ | |
564 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, | |
565 | "6040 ENTER. lport %p, rport %p lsreq %p rqstlen:%d " | |
825c6abb | 566 | "rsplen:%d %pad %pad\n", |
01649561 JS |
567 | pnvme_lport, pnvme_rport, |
568 | pnvme_lsreq, pnvme_lsreq->rqstlen, | |
825c6abb AB |
569 | pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma, |
570 | &pnvme_lsreq->rspdma); | |
01649561 JS |
571 | |
572 | /* | |
573 | * Lock the ELS ring txcmplq and build a local list of all ELS IOs | |
574 | * that need an ABTS. The IOs need to stay on the txcmplq so that | |
575 | * the abort operation completes them successfully. | |
576 | */ | |
577 | pring = phba->sli4_hba.nvmels_wq->pring; | |
578 | spin_lock_irq(&phba->hbalock); | |
579 | spin_lock(&pring->ring_lock); | |
580 | list_for_each_entry_safe(wqe, next_wqe, &pring->txcmplq, list) { | |
581 | /* Add to abort_list on on NDLP match. */ | |
582 | if (lpfc_check_sli_ndlp(phba, pring, wqe, ndlp)) { | |
583 | wqe->iocb_flag |= LPFC_DRIVER_ABORTED; | |
584 | list_add_tail(&wqe->dlist, &abort_list); | |
585 | } | |
586 | } | |
587 | spin_unlock(&pring->ring_lock); | |
588 | spin_unlock_irq(&phba->hbalock); | |
589 | ||
590 | /* Abort the targeted IOs and remove them from the abort list. */ | |
591 | list_for_each_entry_safe(wqe, next_wqe, &abort_list, dlist) { | |
592 | spin_lock_irq(&phba->hbalock); | |
593 | list_del_init(&wqe->dlist); | |
594 | lpfc_sli_issue_abort_iotag(phba, pring, wqe); | |
595 | spin_unlock_irq(&phba->hbalock); | |
596 | } | |
597 | } | |
598 | ||
599 | /* Fix up the existing sgls for NVME IO. */ | |
600 | static void | |
601 | lpfc_nvme_adj_fcp_sgls(struct lpfc_vport *vport, | |
602 | struct lpfc_nvme_buf *lpfc_ncmd, | |
603 | struct nvmefc_fcp_req *nCmd) | |
604 | { | |
605 | struct sli4_sge *sgl; | |
606 | union lpfc_wqe128 *wqe; | |
607 | uint32_t *wptr, *dptr; | |
608 | ||
609 | /* | |
610 | * Adjust the FCP_CMD and FCP_RSP DMA data and sge_len to | |
611 | * match NVME. NVME sends 96 bytes. Also, use the | |
612 | * nvme commands command and response dma addresses | |
613 | * rather than the virtual memory to ease the restore | |
614 | * operation. | |
615 | */ | |
616 | sgl = lpfc_ncmd->nvme_sgl; | |
617 | sgl->sge_len = cpu_to_le32(nCmd->cmdlen); | |
618 | ||
619 | sgl++; | |
620 | ||
621 | /* Setup the physical region for the FCP RSP */ | |
622 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(nCmd->rspdma)); | |
623 | sgl->addr_lo = cpu_to_le32(putPaddrLow(nCmd->rspdma)); | |
624 | sgl->word2 = le32_to_cpu(sgl->word2); | |
625 | if (nCmd->sg_cnt) | |
626 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
627 | else | |
628 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
629 | sgl->word2 = cpu_to_le32(sgl->word2); | |
630 | sgl->sge_len = cpu_to_le32(nCmd->rsplen); | |
631 | ||
632 | /* | |
633 | * Get a local pointer to the built-in wqe and correct | |
634 | * the cmd size to match NVME's 96 bytes and fix | |
635 | * the dma address. | |
636 | */ | |
637 | ||
638 | /* 128 byte wqe support here */ | |
639 | wqe = (union lpfc_wqe128 *)&lpfc_ncmd->cur_iocbq.wqe; | |
640 | ||
641 | /* Word 0-2 - NVME CMND IU (embedded payload) */ | |
642 | wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_IMMED; | |
643 | wqe->generic.bde.tus.f.bdeSize = 60; | |
644 | wqe->generic.bde.addrHigh = 0; | |
645 | wqe->generic.bde.addrLow = 64; /* Word 16 */ | |
646 | ||
647 | /* Word 3 */ | |
648 | bf_set(payload_offset_len, &wqe->fcp_icmd, | |
649 | (nCmd->rsplen + nCmd->cmdlen)); | |
650 | ||
651 | /* Word 10 */ | |
652 | bf_set(wqe_nvme, &wqe->fcp_icmd.wqe_com, 1); | |
653 | bf_set(wqe_wqes, &wqe->fcp_icmd.wqe_com, 1); | |
654 | ||
655 | /* | |
656 | * Embed the payload in the last half of the WQE | |
657 | * WQE words 16-30 get the NVME CMD IU payload | |
658 | * | |
b06a622f | 659 | * WQE words 16-19 get payload Words 1-4 |
01649561 JS |
660 | * WQE words 20-21 get payload Words 6-7 |
661 | * WQE words 22-29 get payload Words 16-23 | |
662 | */ | |
b06a622f | 663 | wptr = &wqe->words[16]; /* WQE ptr */ |
01649561 | 664 | dptr = (uint32_t *)nCmd->cmdaddr; /* payload ptr */ |
b06a622f | 665 | dptr++; /* Skip Word 0 in payload */ |
01649561 | 666 | |
b06a622f | 667 | *wptr++ = *dptr++; /* Word 1 */ |
01649561 JS |
668 | *wptr++ = *dptr++; /* Word 2 */ |
669 | *wptr++ = *dptr++; /* Word 3 */ | |
670 | *wptr++ = *dptr++; /* Word 4 */ | |
671 | dptr++; /* Skip Word 5 in payload */ | |
672 | *wptr++ = *dptr++; /* Word 6 */ | |
673 | *wptr++ = *dptr++; /* Word 7 */ | |
674 | dptr += 8; /* Skip Words 8-15 in payload */ | |
675 | *wptr++ = *dptr++; /* Word 16 */ | |
676 | *wptr++ = *dptr++; /* Word 17 */ | |
677 | *wptr++ = *dptr++; /* Word 18 */ | |
678 | *wptr++ = *dptr++; /* Word 19 */ | |
679 | *wptr++ = *dptr++; /* Word 20 */ | |
680 | *wptr++ = *dptr++; /* Word 21 */ | |
681 | *wptr++ = *dptr++; /* Word 22 */ | |
682 | *wptr = *dptr; /* Word 23 */ | |
683 | } | |
684 | ||
bd2cdd5e JS |
685 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
686 | static void | |
687 | lpfc_nvme_ktime(struct lpfc_hba *phba, | |
688 | struct lpfc_nvme_buf *lpfc_ncmd) | |
689 | { | |
690 | uint64_t seg1, seg2, seg3, seg4; | |
c8a4ce0b | 691 | uint64_t segsum; |
bd2cdd5e | 692 | |
bd2cdd5e JS |
693 | if (!lpfc_ncmd->ts_last_cmd || |
694 | !lpfc_ncmd->ts_cmd_start || | |
695 | !lpfc_ncmd->ts_cmd_wqput || | |
696 | !lpfc_ncmd->ts_isr_cmpl || | |
697 | !lpfc_ncmd->ts_data_nvme) | |
698 | return; | |
c8a4ce0b DK |
699 | |
700 | if (lpfc_ncmd->ts_data_nvme < lpfc_ncmd->ts_cmd_start) | |
701 | return; | |
bd2cdd5e JS |
702 | if (lpfc_ncmd->ts_cmd_start < lpfc_ncmd->ts_last_cmd) |
703 | return; | |
704 | if (lpfc_ncmd->ts_cmd_wqput < lpfc_ncmd->ts_cmd_start) | |
705 | return; | |
706 | if (lpfc_ncmd->ts_isr_cmpl < lpfc_ncmd->ts_cmd_wqput) | |
707 | return; | |
708 | if (lpfc_ncmd->ts_data_nvme < lpfc_ncmd->ts_isr_cmpl) | |
709 | return; | |
710 | /* | |
711 | * Segment 1 - Time from Last FCP command cmpl is handed | |
712 | * off to NVME Layer to start of next command. | |
713 | * Segment 2 - Time from Driver receives a IO cmd start | |
714 | * from NVME Layer to WQ put is done on IO cmd. | |
715 | * Segment 3 - Time from Driver WQ put is done on IO cmd | |
716 | * to MSI-X ISR for IO cmpl. | |
717 | * Segment 4 - Time from MSI-X ISR for IO cmpl to when | |
718 | * cmpl is handled off to the NVME Layer. | |
719 | */ | |
720 | seg1 = lpfc_ncmd->ts_cmd_start - lpfc_ncmd->ts_last_cmd; | |
c8a4ce0b DK |
721 | if (seg1 > 5000000) /* 5 ms - for sequential IOs only */ |
722 | seg1 = 0; | |
bd2cdd5e JS |
723 | |
724 | /* Calculate times relative to start of IO */ | |
725 | seg2 = (lpfc_ncmd->ts_cmd_wqput - lpfc_ncmd->ts_cmd_start); | |
c8a4ce0b DK |
726 | segsum = seg2; |
727 | seg3 = lpfc_ncmd->ts_isr_cmpl - lpfc_ncmd->ts_cmd_start; | |
728 | if (segsum > seg3) | |
729 | return; | |
730 | seg3 -= segsum; | |
731 | segsum += seg3; | |
732 | ||
733 | seg4 = lpfc_ncmd->ts_data_nvme - lpfc_ncmd->ts_cmd_start; | |
734 | if (segsum > seg4) | |
735 | return; | |
736 | seg4 -= segsum; | |
737 | ||
bd2cdd5e JS |
738 | phba->ktime_data_samples++; |
739 | phba->ktime_seg1_total += seg1; | |
740 | if (seg1 < phba->ktime_seg1_min) | |
741 | phba->ktime_seg1_min = seg1; | |
742 | else if (seg1 > phba->ktime_seg1_max) | |
743 | phba->ktime_seg1_max = seg1; | |
744 | phba->ktime_seg2_total += seg2; | |
745 | if (seg2 < phba->ktime_seg2_min) | |
746 | phba->ktime_seg2_min = seg2; | |
747 | else if (seg2 > phba->ktime_seg2_max) | |
748 | phba->ktime_seg2_max = seg2; | |
749 | phba->ktime_seg3_total += seg3; | |
750 | if (seg3 < phba->ktime_seg3_min) | |
751 | phba->ktime_seg3_min = seg3; | |
752 | else if (seg3 > phba->ktime_seg3_max) | |
753 | phba->ktime_seg3_max = seg3; | |
754 | phba->ktime_seg4_total += seg4; | |
755 | if (seg4 < phba->ktime_seg4_min) | |
756 | phba->ktime_seg4_min = seg4; | |
757 | else if (seg4 > phba->ktime_seg4_max) | |
758 | phba->ktime_seg4_max = seg4; | |
759 | ||
760 | lpfc_ncmd->ts_last_cmd = 0; | |
761 | lpfc_ncmd->ts_cmd_start = 0; | |
762 | lpfc_ncmd->ts_cmd_wqput = 0; | |
763 | lpfc_ncmd->ts_isr_cmpl = 0; | |
764 | lpfc_ncmd->ts_data_nvme = 0; | |
765 | } | |
766 | #endif | |
767 | ||
01649561 JS |
768 | /** |
769 | * lpfc_nvme_io_cmd_wqe_cmpl - Complete an NVME-over-FCP IO | |
770 | * @lpfc_pnvme: Pointer to the driver's nvme instance data | |
771 | * @lpfc_nvme_lport: Pointer to the driver's local port data | |
772 | * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq | |
773 | * | |
774 | * Driver registers this routine as it io request handler. This | |
775 | * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq | |
776 | * data structure to the rport indicated in @lpfc_nvme_rport. | |
777 | * | |
778 | * Return value : | |
779 | * 0 - Success | |
780 | * TODO: What are the failure codes. | |
781 | **/ | |
782 | static void | |
783 | lpfc_nvme_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn, | |
784 | struct lpfc_wcqe_complete *wcqe) | |
785 | { | |
786 | struct lpfc_nvme_buf *lpfc_ncmd = | |
787 | (struct lpfc_nvme_buf *)pwqeIn->context1; | |
788 | struct lpfc_vport *vport = pwqeIn->vport; | |
789 | struct nvmefc_fcp_req *nCmd; | |
790 | struct nvme_fc_ersp_iu *ep; | |
791 | struct nvme_fc_cmd_iu *cp; | |
792 | struct lpfc_nvme_rport *rport; | |
793 | struct lpfc_nodelist *ndlp; | |
bbe3012b | 794 | struct lpfc_nvme_fcpreq_priv *freqpriv; |
01649561 JS |
795 | unsigned long flags; |
796 | uint32_t code; | |
797 | uint16_t cid, sqhd, data; | |
798 | uint32_t *ptr; | |
799 | ||
800 | /* Sanity check on return of outstanding command */ | |
801 | if (!lpfc_ncmd || !lpfc_ncmd->nvmeCmd || !lpfc_ncmd->nrport) { | |
802 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, | |
803 | "6071 Completion pointers bad on wqe %p.\n", | |
804 | wcqe); | |
805 | return; | |
806 | } | |
2cee7808 | 807 | atomic_inc(&phba->fc4NvmeIoCmpls); |
01649561 JS |
808 | |
809 | nCmd = lpfc_ncmd->nvmeCmd; | |
810 | rport = lpfc_ncmd->nrport; | |
811 | ||
bd2cdd5e JS |
812 | lpfc_nvmeio_data(phba, "NVME FCP CMPL: xri x%x stat x%x parm x%x\n", |
813 | lpfc_ncmd->cur_iocbq.sli4_xritag, | |
814 | bf_get(lpfc_wcqe_c_status, wcqe), wcqe->parameter); | |
01649561 JS |
815 | /* |
816 | * Catch race where our node has transitioned, but the | |
817 | * transport is still transitioning. | |
818 | */ | |
819 | ndlp = rport->ndlp; | |
820 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { | |
821 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, | |
c154e750 JS |
822 | "6061 rport %p, DID x%06x node not ready.\n", |
823 | rport, rport->remoteport->port_id); | |
01649561 JS |
824 | |
825 | ndlp = lpfc_findnode_did(vport, rport->remoteport->port_id); | |
826 | if (!ndlp) { | |
827 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, | |
828 | "6062 Ignoring NVME cmpl. No ndlp\n"); | |
829 | goto out_err; | |
830 | } | |
831 | } | |
832 | ||
833 | code = bf_get(lpfc_wcqe_c_code, wcqe); | |
834 | if (code == CQE_CODE_NVME_ERSP) { | |
835 | /* For this type of CQE, we need to rebuild the rsp */ | |
836 | ep = (struct nvme_fc_ersp_iu *)nCmd->rspaddr; | |
837 | ||
838 | /* | |
839 | * Get Command Id from cmd to plug into response. This | |
840 | * code is not needed in the next NVME Transport drop. | |
841 | */ | |
842 | cp = (struct nvme_fc_cmd_iu *)nCmd->cmdaddr; | |
843 | cid = cp->sqe.common.command_id; | |
844 | ||
845 | /* | |
846 | * RSN is in CQE word 2 | |
847 | * SQHD is in CQE Word 3 bits 15:0 | |
848 | * Cmd Specific info is in CQE Word 1 | |
849 | * and in CQE Word 0 bits 15:0 | |
850 | */ | |
851 | sqhd = bf_get(lpfc_wcqe_c_sqhead, wcqe); | |
852 | ||
853 | /* Now lets build the NVME ERSP IU */ | |
854 | ep->iu_len = cpu_to_be16(8); | |
855 | ep->rsn = wcqe->parameter; | |
856 | ep->xfrd_len = cpu_to_be32(nCmd->payload_length); | |
857 | ep->rsvd12 = 0; | |
858 | ptr = (uint32_t *)&ep->cqe.result.u64; | |
859 | *ptr++ = wcqe->total_data_placed; | |
860 | data = bf_get(lpfc_wcqe_c_ersp0, wcqe); | |
861 | *ptr = (uint32_t)data; | |
862 | ep->cqe.sq_head = sqhd; | |
863 | ep->cqe.sq_id = nCmd->sqid; | |
864 | ep->cqe.command_id = cid; | |
865 | ep->cqe.status = 0; | |
866 | ||
867 | lpfc_ncmd->status = IOSTAT_SUCCESS; | |
868 | lpfc_ncmd->result = 0; | |
869 | nCmd->rcv_rsplen = LPFC_NVME_ERSP_LEN; | |
870 | nCmd->transferred_length = nCmd->payload_length; | |
871 | } else { | |
872 | lpfc_ncmd->status = (bf_get(lpfc_wcqe_c_status, wcqe) & | |
873 | LPFC_IOCB_STATUS_MASK); | |
952c303b | 874 | lpfc_ncmd->result = (wcqe->parameter & IOERR_PARAM_MASK); |
01649561 JS |
875 | |
876 | /* For NVME, the only failure path that results in an | |
877 | * IO error is when the adapter rejects it. All other | |
878 | * conditions are a success case and resolved by the | |
879 | * transport. | |
880 | * IOSTAT_FCP_RSP_ERROR means: | |
881 | * 1. Length of data received doesn't match total | |
882 | * transfer length in WQE | |
883 | * 2. If the RSP payload does NOT match these cases: | |
884 | * a. RSP length 12/24 bytes and all zeros | |
885 | * b. NVME ERSP | |
886 | */ | |
887 | switch (lpfc_ncmd->status) { | |
888 | case IOSTAT_SUCCESS: | |
889 | nCmd->transferred_length = wcqe->total_data_placed; | |
890 | nCmd->rcv_rsplen = 0; | |
891 | nCmd->status = 0; | |
892 | break; | |
893 | case IOSTAT_FCP_RSP_ERROR: | |
894 | nCmd->transferred_length = wcqe->total_data_placed; | |
895 | nCmd->rcv_rsplen = wcqe->parameter; | |
896 | nCmd->status = 0; | |
897 | /* Sanity check */ | |
898 | if (nCmd->rcv_rsplen == LPFC_NVME_ERSP_LEN) | |
899 | break; | |
900 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, | |
901 | "6081 NVME Completion Protocol Error: " | |
86c67379 JS |
902 | "xri %x status x%x result x%x " |
903 | "placed x%x\n", | |
904 | lpfc_ncmd->cur_iocbq.sli4_xritag, | |
01649561 JS |
905 | lpfc_ncmd->status, lpfc_ncmd->result, |
906 | wcqe->total_data_placed); | |
907 | break; | |
952c303b DK |
908 | case IOSTAT_LOCAL_REJECT: |
909 | /* Let fall through to set command final state. */ | |
910 | if (lpfc_ncmd->result == IOERR_ABORT_REQUESTED) | |
911 | lpfc_printf_vlog(vport, KERN_INFO, | |
912 | LOG_NVME_IOERR, | |
913 | "6032 Delay Aborted cmd %p " | |
914 | "nvme cmd %p, xri x%x, " | |
915 | "xb %d\n", | |
916 | lpfc_ncmd, nCmd, | |
917 | lpfc_ncmd->cur_iocbq.sli4_xritag, | |
918 | bf_get(lpfc_wcqe_c_xb, wcqe)); | |
01649561 JS |
919 | default: |
920 | out_err: | |
e3246a12 | 921 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, |
86c67379 | 922 | "6072 NVME Completion Error: xri %x " |
01649561 | 923 | "status x%x result x%x placed x%x\n", |
86c67379 | 924 | lpfc_ncmd->cur_iocbq.sli4_xritag, |
01649561 JS |
925 | lpfc_ncmd->status, lpfc_ncmd->result, |
926 | wcqe->total_data_placed); | |
927 | nCmd->transferred_length = 0; | |
928 | nCmd->rcv_rsplen = 0; | |
8e009ce8 | 929 | nCmd->status = NVME_SC_INTERNAL; |
01649561 JS |
930 | } |
931 | } | |
932 | ||
933 | /* pick up SLI4 exhange busy condition */ | |
934 | if (bf_get(lpfc_wcqe_c_xb, wcqe)) | |
935 | lpfc_ncmd->flags |= LPFC_SBUF_XBUSY; | |
936 | else | |
937 | lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY; | |
938 | ||
939 | if (ndlp && NLP_CHK_NODE_ACT(ndlp)) | |
940 | atomic_dec(&ndlp->cmd_pending); | |
941 | ||
942 | /* Update stats and complete the IO. There is | |
943 | * no need for dma unprep because the nvme_transport | |
944 | * owns the dma address. | |
945 | */ | |
bd2cdd5e | 946 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
c8a4ce0b | 947 | if (lpfc_ncmd->ts_cmd_start) { |
bd2cdd5e JS |
948 | lpfc_ncmd->ts_isr_cmpl = pwqeIn->isr_timestamp; |
949 | lpfc_ncmd->ts_data_nvme = ktime_get_ns(); | |
950 | phba->ktime_last_cmd = lpfc_ncmd->ts_data_nvme; | |
951 | lpfc_nvme_ktime(phba, lpfc_ncmd); | |
952 | } | |
953 | if (phba->cpucheck_on & LPFC_CHECK_NVME_IO) { | |
954 | if (lpfc_ncmd->cpu != smp_processor_id()) | |
955 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, | |
956 | "6701 CPU Check cmpl: " | |
957 | "cpu %d expect %d\n", | |
958 | smp_processor_id(), lpfc_ncmd->cpu); | |
959 | if (lpfc_ncmd->cpu < LPFC_CHECK_CPU_CNT) | |
960 | phba->cpucheck_cmpl_io[lpfc_ncmd->cpu]++; | |
961 | } | |
962 | #endif | |
bbe3012b JS |
963 | freqpriv = nCmd->private; |
964 | freqpriv->nvme_buf = NULL; | |
952c303b DK |
965 | |
966 | /* NVME targets need completion held off until the abort exchange | |
add9d6be | 967 | * completes unless the NVME Rport is getting unregistered. |
952c303b | 968 | */ |
add9d6be JS |
969 | if (!(lpfc_ncmd->flags & LPFC_SBUF_XBUSY) || |
970 | ndlp->upcall_flags & NLP_WAIT_FOR_UNREG) { | |
971 | /* Clear the XBUSY flag to prevent double completions. | |
972 | * The nvme rport is getting unregistered and there is | |
973 | * no need to defer the IO. | |
974 | */ | |
975 | if (lpfc_ncmd->flags & LPFC_SBUF_XBUSY) | |
976 | lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY; | |
977 | ||
952c303b | 978 | nCmd->done(nCmd); |
add9d6be | 979 | } |
01649561 JS |
980 | |
981 | spin_lock_irqsave(&phba->hbalock, flags); | |
982 | lpfc_ncmd->nrport = NULL; | |
983 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
984 | ||
952c303b | 985 | /* Call release with XB=1 to queue the IO into the abort list. */ |
01649561 JS |
986 | lpfc_release_nvme_buf(phba, lpfc_ncmd); |
987 | } | |
988 | ||
989 | ||
990 | /** | |
991 | * lpfc_nvme_prep_io_cmd - Issue an NVME-over-FCP IO | |
992 | * @lpfc_pnvme: Pointer to the driver's nvme instance data | |
993 | * @lpfc_nvme_lport: Pointer to the driver's local port data | |
994 | * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq | |
995 | * @lpfc_nvme_fcreq: IO request from nvme fc to driver. | |
996 | * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue | |
997 | * | |
998 | * Driver registers this routine as it io request handler. This | |
999 | * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq | |
1000 | * data structure to the rport indicated in @lpfc_nvme_rport. | |
1001 | * | |
1002 | * Return value : | |
1003 | * 0 - Success | |
1004 | * TODO: What are the failure codes. | |
1005 | **/ | |
1006 | static int | |
1007 | lpfc_nvme_prep_io_cmd(struct lpfc_vport *vport, | |
1008 | struct lpfc_nvme_buf *lpfc_ncmd, | |
1009 | struct lpfc_nodelist *pnode) | |
1010 | { | |
1011 | struct lpfc_hba *phba = vport->phba; | |
1012 | struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd; | |
1013 | struct lpfc_iocbq *pwqeq = &(lpfc_ncmd->cur_iocbq); | |
1014 | union lpfc_wqe128 *wqe = (union lpfc_wqe128 *)&pwqeq->wqe; | |
1015 | uint32_t req_len; | |
1016 | ||
1017 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) | |
1018 | return -EINVAL; | |
1019 | ||
1020 | /* | |
1021 | * There are three possibilities here - use scatter-gather segment, use | |
1022 | * the single mapping, or neither. | |
1023 | */ | |
1024 | wqe->fcp_iwrite.initial_xfer_len = 0; | |
1025 | if (nCmd->sg_cnt) { | |
1026 | if (nCmd->io_dir == NVMEFC_FCP_WRITE) { | |
1027 | /* Word 5 */ | |
1028 | if ((phba->cfg_nvme_enable_fb) && | |
1029 | (pnode->nlp_flag & NLP_FIRSTBURST)) { | |
1030 | req_len = lpfc_ncmd->nvmeCmd->payload_length; | |
1031 | if (req_len < pnode->nvme_fb_size) | |
1032 | wqe->fcp_iwrite.initial_xfer_len = | |
1033 | req_len; | |
1034 | else | |
1035 | wqe->fcp_iwrite.initial_xfer_len = | |
1036 | pnode->nvme_fb_size; | |
1037 | } | |
1038 | ||
1039 | /* Word 7 */ | |
1040 | bf_set(wqe_cmnd, &wqe->generic.wqe_com, | |
1041 | CMD_FCP_IWRITE64_WQE); | |
1042 | bf_set(wqe_pu, &wqe->generic.wqe_com, | |
1043 | PARM_READ_CHECK); | |
1044 | ||
1045 | /* Word 10 */ | |
1046 | bf_set(wqe_qosd, &wqe->fcp_iwrite.wqe_com, 0); | |
1047 | bf_set(wqe_iod, &wqe->fcp_iwrite.wqe_com, | |
1048 | LPFC_WQE_IOD_WRITE); | |
1049 | bf_set(wqe_lenloc, &wqe->fcp_iwrite.wqe_com, | |
1050 | LPFC_WQE_LENLOC_WORD4); | |
1051 | if (phba->cfg_nvme_oas) | |
1052 | bf_set(wqe_oas, &wqe->fcp_iwrite.wqe_com, 1); | |
1053 | ||
1054 | /* Word 11 */ | |
1055 | bf_set(wqe_cmd_type, &wqe->generic.wqe_com, | |
1056 | NVME_WRITE_CMD); | |
1057 | ||
2cee7808 | 1058 | atomic_inc(&phba->fc4NvmeOutputRequests); |
01649561 JS |
1059 | } else { |
1060 | /* Word 7 */ | |
1061 | bf_set(wqe_cmnd, &wqe->generic.wqe_com, | |
1062 | CMD_FCP_IREAD64_WQE); | |
1063 | bf_set(wqe_pu, &wqe->generic.wqe_com, | |
1064 | PARM_READ_CHECK); | |
1065 | ||
1066 | /* Word 10 */ | |
1067 | bf_set(wqe_qosd, &wqe->fcp_iread.wqe_com, 0); | |
1068 | bf_set(wqe_iod, &wqe->fcp_iread.wqe_com, | |
1069 | LPFC_WQE_IOD_READ); | |
1070 | bf_set(wqe_lenloc, &wqe->fcp_iread.wqe_com, | |
1071 | LPFC_WQE_LENLOC_WORD4); | |
1072 | if (phba->cfg_nvme_oas) | |
1073 | bf_set(wqe_oas, &wqe->fcp_iread.wqe_com, 1); | |
1074 | ||
1075 | /* Word 11 */ | |
1076 | bf_set(wqe_cmd_type, &wqe->generic.wqe_com, | |
1077 | NVME_READ_CMD); | |
1078 | ||
2cee7808 | 1079 | atomic_inc(&phba->fc4NvmeInputRequests); |
01649561 JS |
1080 | } |
1081 | } else { | |
1082 | /* Word 4 */ | |
1083 | wqe->fcp_icmd.rsrvd4 = 0; | |
1084 | ||
1085 | /* Word 7 */ | |
1086 | bf_set(wqe_cmnd, &wqe->generic.wqe_com, CMD_FCP_ICMND64_WQE); | |
1087 | bf_set(wqe_pu, &wqe->generic.wqe_com, 0); | |
1088 | ||
1089 | /* Word 10 */ | |
1090 | bf_set(wqe_qosd, &wqe->fcp_icmd.wqe_com, 1); | |
1091 | bf_set(wqe_iod, &wqe->fcp_icmd.wqe_com, LPFC_WQE_IOD_WRITE); | |
1092 | bf_set(wqe_lenloc, &wqe->fcp_icmd.wqe_com, | |
1093 | LPFC_WQE_LENLOC_NONE); | |
1094 | if (phba->cfg_nvme_oas) | |
1095 | bf_set(wqe_oas, &wqe->fcp_icmd.wqe_com, 1); | |
1096 | ||
1097 | /* Word 11 */ | |
1098 | bf_set(wqe_cmd_type, &wqe->generic.wqe_com, NVME_READ_CMD); | |
1099 | ||
2cee7808 | 1100 | atomic_inc(&phba->fc4NvmeControlRequests); |
01649561 JS |
1101 | } |
1102 | /* | |
1103 | * Finish initializing those WQE fields that are independent | |
1104 | * of the nvme_cmnd request_buffer | |
1105 | */ | |
1106 | ||
1107 | /* Word 6 */ | |
1108 | bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, | |
1109 | phba->sli4_hba.rpi_ids[pnode->nlp_rpi]); | |
1110 | bf_set(wqe_xri_tag, &wqe->generic.wqe_com, pwqeq->sli4_xritag); | |
1111 | ||
1112 | /* Word 7 */ | |
1113 | /* Preserve Class data in the ndlp. */ | |
1114 | bf_set(wqe_class, &wqe->generic.wqe_com, | |
1115 | (pnode->nlp_fcp_info & 0x0f)); | |
1116 | ||
1117 | /* Word 8 */ | |
1118 | wqe->generic.wqe_com.abort_tag = pwqeq->iotag; | |
1119 | ||
1120 | /* Word 9 */ | |
1121 | bf_set(wqe_reqtag, &wqe->generic.wqe_com, pwqeq->iotag); | |
1122 | ||
1123 | /* Word 11 */ | |
1124 | bf_set(wqe_cqid, &wqe->generic.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); | |
1125 | ||
1126 | pwqeq->vport = vport; | |
1127 | return 0; | |
1128 | } | |
1129 | ||
1130 | ||
1131 | /** | |
1132 | * lpfc_nvme_prep_io_dma - Issue an NVME-over-FCP IO | |
1133 | * @lpfc_pnvme: Pointer to the driver's nvme instance data | |
1134 | * @lpfc_nvme_lport: Pointer to the driver's local port data | |
1135 | * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq | |
1136 | * @lpfc_nvme_fcreq: IO request from nvme fc to driver. | |
1137 | * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue | |
1138 | * | |
1139 | * Driver registers this routine as it io request handler. This | |
1140 | * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq | |
1141 | * data structure to the rport indicated in @lpfc_nvme_rport. | |
1142 | * | |
1143 | * Return value : | |
1144 | * 0 - Success | |
1145 | * TODO: What are the failure codes. | |
1146 | **/ | |
1147 | static int | |
1148 | lpfc_nvme_prep_io_dma(struct lpfc_vport *vport, | |
1149 | struct lpfc_nvme_buf *lpfc_ncmd) | |
1150 | { | |
1151 | struct lpfc_hba *phba = vport->phba; | |
1152 | struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd; | |
1153 | union lpfc_wqe128 *wqe = (union lpfc_wqe128 *)&lpfc_ncmd->cur_iocbq.wqe; | |
1154 | struct sli4_sge *sgl = lpfc_ncmd->nvme_sgl; | |
1155 | struct scatterlist *data_sg; | |
1156 | struct sli4_sge *first_data_sgl; | |
1157 | dma_addr_t physaddr; | |
1158 | uint32_t num_bde = 0; | |
1159 | uint32_t dma_len; | |
1160 | uint32_t dma_offset = 0; | |
1161 | int nseg, i; | |
1162 | ||
1163 | /* Fix up the command and response DMA stuff. */ | |
1164 | lpfc_nvme_adj_fcp_sgls(vport, lpfc_ncmd, nCmd); | |
1165 | ||
1166 | /* | |
1167 | * There are three possibilities here - use scatter-gather segment, use | |
1168 | * the single mapping, or neither. | |
1169 | */ | |
1170 | if (nCmd->sg_cnt) { | |
1171 | /* | |
1172 | * Jump over the cmd and rsp SGEs. The fix routine | |
1173 | * has already adjusted for this. | |
1174 | */ | |
1175 | sgl += 2; | |
1176 | ||
1177 | first_data_sgl = sgl; | |
1178 | lpfc_ncmd->seg_cnt = nCmd->sg_cnt; | |
81e6a637 | 1179 | if (lpfc_ncmd->seg_cnt > lpfc_nvme_template.max_sgl_segments) { |
01649561 JS |
1180 | lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, |
1181 | "6058 Too many sg segments from " | |
1182 | "NVME Transport. Max %d, " | |
1183 | "nvmeIO sg_cnt %d\n", | |
29bfd55a | 1184 | phba->cfg_nvme_seg_cnt + 1, |
01649561 JS |
1185 | lpfc_ncmd->seg_cnt); |
1186 | lpfc_ncmd->seg_cnt = 0; | |
1187 | return 1; | |
1188 | } | |
1189 | ||
1190 | /* | |
1191 | * The driver established a maximum scatter-gather segment count | |
1192 | * during probe that limits the number of sg elements in any | |
1193 | * single nvme command. Just run through the seg_cnt and format | |
1194 | * the sge's. | |
1195 | */ | |
1196 | nseg = nCmd->sg_cnt; | |
1197 | data_sg = nCmd->first_sgl; | |
1198 | for (i = 0; i < nseg; i++) { | |
1199 | if (data_sg == NULL) { | |
1200 | lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, | |
1201 | "6059 dptr err %d, nseg %d\n", | |
1202 | i, nseg); | |
1203 | lpfc_ncmd->seg_cnt = 0; | |
1204 | return 1; | |
1205 | } | |
1206 | physaddr = data_sg->dma_address; | |
1207 | dma_len = data_sg->length; | |
1208 | sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr)); | |
1209 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr)); | |
1210 | sgl->word2 = le32_to_cpu(sgl->word2); | |
1211 | if ((num_bde + 1) == nseg) | |
1212 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
1213 | else | |
1214 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
1215 | bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); | |
1216 | bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); | |
1217 | sgl->word2 = cpu_to_le32(sgl->word2); | |
1218 | sgl->sge_len = cpu_to_le32(dma_len); | |
1219 | ||
1220 | dma_offset += dma_len; | |
1221 | data_sg = sg_next(data_sg); | |
1222 | sgl++; | |
1223 | } | |
1224 | } else { | |
1225 | /* For this clause to be valid, the payload_length | |
1226 | * and sg_cnt must zero. | |
1227 | */ | |
1228 | if (nCmd->payload_length != 0) { | |
1229 | lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, | |
1230 | "6063 NVME DMA Prep Err: sg_cnt %d " | |
1231 | "payload_length x%x\n", | |
1232 | nCmd->sg_cnt, nCmd->payload_length); | |
1233 | return 1; | |
1234 | } | |
1235 | } | |
1236 | ||
1237 | /* | |
1238 | * Due to difference in data length between DIF/non-DIF paths, | |
1239 | * we need to set word 4 of WQE here | |
1240 | */ | |
1241 | wqe->fcp_iread.total_xfer_len = nCmd->payload_length; | |
1242 | return 0; | |
1243 | } | |
1244 | ||
1245 | /** | |
1246 | * lpfc_nvme_fcp_io_submit - Issue an NVME-over-FCP IO | |
1247 | * @lpfc_pnvme: Pointer to the driver's nvme instance data | |
1248 | * @lpfc_nvme_lport: Pointer to the driver's local port data | |
1249 | * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq | |
1250 | * @lpfc_nvme_fcreq: IO request from nvme fc to driver. | |
1251 | * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue | |
1252 | * | |
1253 | * Driver registers this routine as it io request handler. This | |
1254 | * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq | |
1255 | * data structure to the rport | |
1256 | indicated in @lpfc_nvme_rport. | |
1257 | * | |
1258 | * Return value : | |
1259 | * 0 - Success | |
1260 | * TODO: What are the failure codes. | |
1261 | **/ | |
1262 | static int | |
1263 | lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port *pnvme_lport, | |
1264 | struct nvme_fc_remote_port *pnvme_rport, | |
1265 | void *hw_queue_handle, | |
1266 | struct nvmefc_fcp_req *pnvme_fcreq) | |
1267 | { | |
1268 | int ret = 0; | |
cf1a1d3e | 1269 | int expedite = 0; |
01649561 JS |
1270 | struct lpfc_nvme_lport *lport; |
1271 | struct lpfc_vport *vport; | |
1272 | struct lpfc_hba *phba; | |
1273 | struct lpfc_nodelist *ndlp; | |
1274 | struct lpfc_nvme_buf *lpfc_ncmd; | |
1275 | struct lpfc_nvme_rport *rport; | |
1276 | struct lpfc_nvme_qhandle *lpfc_queue_info; | |
c3725bdc | 1277 | struct lpfc_nvme_fcpreq_priv *freqpriv; |
cf1a1d3e | 1278 | struct nvme_common_command *sqe; |
bd2cdd5e JS |
1279 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
1280 | uint64_t start = 0; | |
1281 | #endif | |
01649561 | 1282 | |
c3725bdc JS |
1283 | /* Validate pointers. LLDD fault handling with transport does |
1284 | * have timing races. | |
1285 | */ | |
01649561 | 1286 | lport = (struct lpfc_nvme_lport *)pnvme_lport->private; |
c3725bdc JS |
1287 | if (unlikely(!lport)) { |
1288 | ret = -EINVAL; | |
1289 | goto out_fail; | |
1290 | } | |
1291 | ||
01649561 | 1292 | vport = lport->vport; |
c3725bdc JS |
1293 | |
1294 | if (unlikely(!hw_queue_handle)) { | |
1295 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, | |
1296 | "6129 Fail Abort, NULL hw_queue_handle\n"); | |
1297 | ret = -EINVAL; | |
1298 | goto out_fail; | |
1299 | } | |
1300 | ||
01649561 JS |
1301 | phba = vport->phba; |
1302 | ||
1abcb371 DK |
1303 | if (vport->load_flag & FC_UNLOADING) { |
1304 | ret = -ENODEV; | |
1305 | goto out_fail; | |
1306 | } | |
1307 | ||
3386f4bd JS |
1308 | if (vport->load_flag & FC_UNLOADING) { |
1309 | ret = -ENODEV; | |
1310 | goto out_fail; | |
1311 | } | |
1312 | ||
c3725bdc JS |
1313 | freqpriv = pnvme_fcreq->private; |
1314 | if (unlikely(!freqpriv)) { | |
1315 | ret = -EINVAL; | |
b7672ae6 DK |
1316 | goto out_fail; |
1317 | } | |
1318 | ||
bd2cdd5e JS |
1319 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
1320 | if (phba->ktime_on) | |
1321 | start = ktime_get_ns(); | |
1322 | #endif | |
01649561 JS |
1323 | rport = (struct lpfc_nvme_rport *)pnvme_rport->private; |
1324 | lpfc_queue_info = (struct lpfc_nvme_qhandle *)hw_queue_handle; | |
1325 | ||
1326 | /* | |
1327 | * Catch race where our node has transitioned, but the | |
1328 | * transport is still transitioning. | |
1329 | */ | |
1330 | ndlp = rport->ndlp; | |
1331 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { | |
1332 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, | |
1333 | "6053 rport %p, ndlp %p, DID x%06x " | |
1334 | "ndlp not ready.\n", | |
1335 | rport, ndlp, pnvme_rport->port_id); | |
1336 | ||
1337 | ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id); | |
1338 | if (!ndlp) { | |
1339 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, | |
1340 | "6066 Missing node for DID %x\n", | |
1341 | pnvme_rport->port_id); | |
1342 | ret = -ENODEV; | |
1343 | goto out_fail; | |
1344 | } | |
1345 | } | |
1346 | ||
1347 | /* The remote node has to be a mapped target or it's an error. */ | |
1348 | if ((ndlp->nlp_type & NLP_NVME_TARGET) && | |
1349 | (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) { | |
1350 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, | |
1351 | "6036 rport %p, DID x%06x not ready for " | |
1352 | "IO. State x%x, Type x%x\n", | |
1353 | rport, pnvme_rport->port_id, | |
1354 | ndlp->nlp_state, ndlp->nlp_type); | |
1355 | ret = -ENODEV; | |
1356 | goto out_fail; | |
1357 | ||
1358 | } | |
1359 | ||
cf1a1d3e JS |
1360 | /* Currently only NVME Keep alive commands should be expedited |
1361 | * if the driver runs out of a resource. These should only be | |
1362 | * issued on the admin queue, qidx 0 | |
1363 | */ | |
1364 | if (!lpfc_queue_info->qidx && !pnvme_fcreq->sg_cnt) { | |
1365 | sqe = &((struct nvme_fc_cmd_iu *) | |
1366 | pnvme_fcreq->cmdaddr)->sqe.common; | |
1367 | if (sqe->opcode == nvme_admin_keep_alive) | |
1368 | expedite = 1; | |
1369 | } | |
1370 | ||
01649561 JS |
1371 | /* The node is shared with FCP IO, make sure the IO pending count does |
1372 | * not exceed the programmed depth. | |
1373 | */ | |
cf1a1d3e JS |
1374 | if ((atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) && |
1375 | !expedite) { | |
cd22d605 | 1376 | ret = -EBUSY; |
01649561 JS |
1377 | goto out_fail; |
1378 | } | |
1379 | ||
cf1a1d3e | 1380 | lpfc_ncmd = lpfc_get_nvme_buf(phba, ndlp, expedite); |
01649561 JS |
1381 | if (lpfc_ncmd == NULL) { |
1382 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, | |
1383 | "6065 driver's buffer pool is empty, " | |
1384 | "IO failed\n"); | |
cd22d605 | 1385 | ret = -EBUSY; |
01649561 JS |
1386 | goto out_fail; |
1387 | } | |
bd2cdd5e | 1388 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
c8a4ce0b | 1389 | if (start) { |
bd2cdd5e JS |
1390 | lpfc_ncmd->ts_cmd_start = start; |
1391 | lpfc_ncmd->ts_last_cmd = phba->ktime_last_cmd; | |
c8a4ce0b DK |
1392 | } else { |
1393 | lpfc_ncmd->ts_cmd_start = 0; | |
bd2cdd5e JS |
1394 | } |
1395 | #endif | |
01649561 JS |
1396 | |
1397 | /* | |
1398 | * Store the data needed by the driver to issue, abort, and complete | |
1399 | * an IO. | |
1400 | * Do not let the IO hang out forever. There is no midlayer issuing | |
1401 | * an abort so inform the FW of the maximum IO pending time. | |
1402 | */ | |
bbe3012b | 1403 | freqpriv->nvme_buf = lpfc_ncmd; |
01649561 JS |
1404 | lpfc_ncmd->nvmeCmd = pnvme_fcreq; |
1405 | lpfc_ncmd->nrport = rport; | |
318083ad | 1406 | lpfc_ncmd->ndlp = ndlp; |
01649561 JS |
1407 | lpfc_ncmd->start_time = jiffies; |
1408 | ||
1409 | lpfc_nvme_prep_io_cmd(vport, lpfc_ncmd, ndlp); | |
1410 | ret = lpfc_nvme_prep_io_dma(vport, lpfc_ncmd); | |
1411 | if (ret) { | |
1412 | ret = -ENOMEM; | |
1413 | goto out_free_nvme_buf; | |
1414 | } | |
1415 | ||
1416 | atomic_inc(&ndlp->cmd_pending); | |
1417 | ||
1418 | /* | |
1419 | * Issue the IO on the WQ indicated by index in the hw_queue_handle. | |
1420 | * This identfier was create in our hardware queue create callback | |
1421 | * routine. The driver now is dependent on the IO queue steering from | |
1422 | * the transport. We are trusting the upper NVME layers know which | |
1423 | * index to use and that they have affinitized a CPU to this hardware | |
1424 | * queue. A hardware queue maps to a driver MSI-X vector/EQ/CQ/WQ. | |
1425 | */ | |
1426 | lpfc_ncmd->cur_iocbq.hba_wqidx = lpfc_queue_info->index; | |
1427 | ||
bd2cdd5e JS |
1428 | lpfc_nvmeio_data(phba, "NVME FCP XMIT: xri x%x idx %d to %06x\n", |
1429 | lpfc_ncmd->cur_iocbq.sli4_xritag, | |
1430 | lpfc_queue_info->index, ndlp->nlp_DID); | |
1431 | ||
01649561 JS |
1432 | ret = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, &lpfc_ncmd->cur_iocbq); |
1433 | if (ret) { | |
1434 | atomic_dec(&ndlp->cmd_pending); | |
e3246a12 | 1435 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, |
01649561 JS |
1436 | "6113 FCP could not issue WQE err %x " |
1437 | "sid: x%x did: x%x oxid: x%x\n", | |
1438 | ret, vport->fc_myDID, ndlp->nlp_DID, | |
1439 | lpfc_ncmd->cur_iocbq.sli4_xritag); | |
01649561 JS |
1440 | goto out_free_nvme_buf; |
1441 | } | |
1442 | ||
bd2cdd5e | 1443 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
c8a4ce0b | 1444 | if (lpfc_ncmd->ts_cmd_start) |
bd2cdd5e JS |
1445 | lpfc_ncmd->ts_cmd_wqput = ktime_get_ns(); |
1446 | ||
1447 | if (phba->cpucheck_on & LPFC_CHECK_NVME_IO) { | |
1448 | lpfc_ncmd->cpu = smp_processor_id(); | |
1449 | if (lpfc_ncmd->cpu != lpfc_queue_info->index) { | |
1450 | /* Check for admin queue */ | |
1451 | if (lpfc_queue_info->qidx) { | |
1452 | lpfc_printf_vlog(vport, | |
1453 | KERN_ERR, LOG_NVME_IOERR, | |
1454 | "6702 CPU Check cmd: " | |
1455 | "cpu %d wq %d\n", | |
1456 | lpfc_ncmd->cpu, | |
1457 | lpfc_queue_info->index); | |
1458 | } | |
1459 | lpfc_ncmd->cpu = lpfc_queue_info->index; | |
1460 | } | |
1461 | if (lpfc_ncmd->cpu < LPFC_CHECK_CPU_CNT) | |
1462 | phba->cpucheck_xmt_io[lpfc_ncmd->cpu]++; | |
1463 | } | |
1464 | #endif | |
01649561 JS |
1465 | return 0; |
1466 | ||
1467 | out_free_nvme_buf: | |
2cee7808 JS |
1468 | if (lpfc_ncmd->nvmeCmd->sg_cnt) { |
1469 | if (lpfc_ncmd->nvmeCmd->io_dir == NVMEFC_FCP_WRITE) | |
1470 | atomic_dec(&phba->fc4NvmeOutputRequests); | |
1471 | else | |
1472 | atomic_dec(&phba->fc4NvmeInputRequests); | |
1473 | } else | |
1474 | atomic_dec(&phba->fc4NvmeControlRequests); | |
01649561 JS |
1475 | lpfc_release_nvme_buf(phba, lpfc_ncmd); |
1476 | out_fail: | |
1477 | return ret; | |
1478 | } | |
1479 | ||
1480 | /** | |
1481 | * lpfc_nvme_abort_fcreq_cmpl - Complete an NVME FCP abort request. | |
1482 | * @phba: Pointer to HBA context object | |
1483 | * @cmdiocb: Pointer to command iocb object. | |
1484 | * @rspiocb: Pointer to response iocb object. | |
1485 | * | |
1486 | * This is the callback function for any NVME FCP IO that was aborted. | |
1487 | * | |
1488 | * Return value: | |
1489 | * None | |
1490 | **/ | |
1491 | void | |
1492 | lpfc_nvme_abort_fcreq_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, | |
1493 | struct lpfc_wcqe_complete *abts_cmpl) | |
1494 | { | |
e3246a12 | 1495 | lpfc_printf_log(phba, KERN_INFO, LOG_NVME, |
01649561 JS |
1496 | "6145 ABORT_XRI_CN completing on rpi x%x " |
1497 | "original iotag x%x, abort cmd iotag x%x " | |
1498 | "req_tag x%x, status x%x, hwstatus x%x\n", | |
1499 | cmdiocb->iocb.un.acxri.abortContextTag, | |
1500 | cmdiocb->iocb.un.acxri.abortIoTag, | |
1501 | cmdiocb->iotag, | |
1502 | bf_get(lpfc_wcqe_c_request_tag, abts_cmpl), | |
1503 | bf_get(lpfc_wcqe_c_status, abts_cmpl), | |
1504 | bf_get(lpfc_wcqe_c_hw_status, abts_cmpl)); | |
1505 | lpfc_sli_release_iocbq(phba, cmdiocb); | |
1506 | } | |
1507 | ||
1508 | /** | |
1509 | * lpfc_nvme_fcp_abort - Issue an NVME-over-FCP ABTS | |
1510 | * @lpfc_pnvme: Pointer to the driver's nvme instance data | |
1511 | * @lpfc_nvme_lport: Pointer to the driver's local port data | |
1512 | * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq | |
1513 | * @lpfc_nvme_fcreq: IO request from nvme fc to driver. | |
1514 | * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue | |
1515 | * | |
1516 | * Driver registers this routine as its nvme request io abort handler. This | |
1517 | * routine issues an fcp Abort WQE with data from the @lpfc_nvme_fcpreq | |
1518 | * data structure to the rport indicated in @lpfc_nvme_rport. This routine | |
1519 | * is executed asynchronously - one the target is validated as "MAPPED" and | |
1520 | * ready for IO, the driver issues the abort request and returns. | |
1521 | * | |
1522 | * Return value: | |
1523 | * None | |
1524 | **/ | |
1525 | static void | |
1526 | lpfc_nvme_fcp_abort(struct nvme_fc_local_port *pnvme_lport, | |
1527 | struct nvme_fc_remote_port *pnvme_rport, | |
1528 | void *hw_queue_handle, | |
1529 | struct nvmefc_fcp_req *pnvme_fcreq) | |
1530 | { | |
1531 | struct lpfc_nvme_lport *lport; | |
1532 | struct lpfc_vport *vport; | |
1533 | struct lpfc_hba *phba; | |
01649561 JS |
1534 | struct lpfc_nvme_buf *lpfc_nbuf; |
1535 | struct lpfc_iocbq *abts_buf; | |
1536 | struct lpfc_iocbq *nvmereq_wqe; | |
c3725bdc | 1537 | struct lpfc_nvme_fcpreq_priv *freqpriv; |
01649561 JS |
1538 | union lpfc_wqe *abts_wqe; |
1539 | unsigned long flags; | |
1540 | int ret_val; | |
1541 | ||
c3725bdc JS |
1542 | /* Validate pointers. LLDD fault handling with transport does |
1543 | * have timing races. | |
1544 | */ | |
01649561 | 1545 | lport = (struct lpfc_nvme_lport *)pnvme_lport->private; |
c3725bdc JS |
1546 | if (unlikely(!lport)) |
1547 | return; | |
1548 | ||
01649561 | 1549 | vport = lport->vport; |
c3725bdc JS |
1550 | |
1551 | if (unlikely(!hw_queue_handle)) { | |
1552 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, | |
1553 | "6129 Fail Abort, HW Queue Handle NULL.\n"); | |
1554 | return; | |
1555 | } | |
1556 | ||
01649561 | 1557 | phba = vport->phba; |
c3725bdc | 1558 | freqpriv = pnvme_fcreq->private; |
01649561 | 1559 | |
c3725bdc JS |
1560 | if (unlikely(!freqpriv)) |
1561 | return; | |
3386f4bd JS |
1562 | if (vport->load_flag & FC_UNLOADING) |
1563 | return; | |
1564 | ||
01649561 | 1565 | /* Announce entry to new IO submit field. */ |
86c67379 | 1566 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, |
01649561 JS |
1567 | "6002 Abort Request to rport DID x%06x " |
1568 | "for nvme_fc_req %p\n", | |
1569 | pnvme_rport->port_id, | |
1570 | pnvme_fcreq); | |
1571 | ||
01649561 JS |
1572 | /* If the hba is getting reset, this flag is set. It is |
1573 | * cleared when the reset is complete and rings reestablished. | |
1574 | */ | |
1575 | spin_lock_irqsave(&phba->hbalock, flags); | |
1576 | /* driver queued commands are in process of being flushed */ | |
1577 | if (phba->hba_flag & HBA_NVME_IOQ_FLUSH) { | |
1578 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
86c67379 | 1579 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, |
01649561 JS |
1580 | "6139 Driver in reset cleanup - flushing " |
1581 | "NVME Req now. hba_flag x%x\n", | |
1582 | phba->hba_flag); | |
1583 | return; | |
1584 | } | |
1585 | ||
bbe3012b | 1586 | lpfc_nbuf = freqpriv->nvme_buf; |
01649561 JS |
1587 | if (!lpfc_nbuf) { |
1588 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
86c67379 | 1589 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, |
01649561 JS |
1590 | "6140 NVME IO req has no matching lpfc nvme " |
1591 | "io buffer. Skipping abort req.\n"); | |
1592 | return; | |
1593 | } else if (!lpfc_nbuf->nvmeCmd) { | |
1594 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
86c67379 | 1595 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, |
01649561 JS |
1596 | "6141 lpfc NVME IO req has no nvme_fcreq " |
1597 | "io buffer. Skipping abort req.\n"); | |
1598 | return; | |
1599 | } | |
2b7824d0 | 1600 | nvmereq_wqe = &lpfc_nbuf->cur_iocbq; |
01649561 JS |
1601 | |
1602 | /* | |
1603 | * The lpfc_nbuf and the mapped nvme_fcreq in the driver's | |
1604 | * state must match the nvme_fcreq passed by the nvme | |
1605 | * transport. If they don't match, it is likely the driver | |
1606 | * has already completed the NVME IO and the nvme transport | |
1607 | * has not seen it yet. | |
1608 | */ | |
1609 | if (lpfc_nbuf->nvmeCmd != pnvme_fcreq) { | |
1610 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
86c67379 | 1611 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, |
01649561 JS |
1612 | "6143 NVME req mismatch: " |
1613 | "lpfc_nbuf %p nvmeCmd %p, " | |
2b7824d0 | 1614 | "pnvme_fcreq %p. Skipping Abort xri x%x\n", |
01649561 | 1615 | lpfc_nbuf, lpfc_nbuf->nvmeCmd, |
2b7824d0 | 1616 | pnvme_fcreq, nvmereq_wqe->sli4_xritag); |
01649561 JS |
1617 | return; |
1618 | } | |
1619 | ||
1620 | /* Don't abort IOs no longer on the pending queue. */ | |
01649561 JS |
1621 | if (!(nvmereq_wqe->iocb_flag & LPFC_IO_ON_TXCMPLQ)) { |
1622 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
86c67379 | 1623 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, |
01649561 | 1624 | "6142 NVME IO req %p not queued - skipping " |
2b7824d0 JS |
1625 | "abort req xri x%x\n", |
1626 | pnvme_fcreq, nvmereq_wqe->sli4_xritag); | |
01649561 JS |
1627 | return; |
1628 | } | |
1629 | ||
bd2cdd5e JS |
1630 | lpfc_nvmeio_data(phba, "NVME FCP ABORT: xri x%x idx %d to %06x\n", |
1631 | nvmereq_wqe->sli4_xritag, | |
00cefeb9 | 1632 | nvmereq_wqe->hba_wqidx, pnvme_rport->port_id); |
bd2cdd5e | 1633 | |
01649561 JS |
1634 | /* Outstanding abort is in progress */ |
1635 | if (nvmereq_wqe->iocb_flag & LPFC_DRIVER_ABORTED) { | |
1636 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
86c67379 | 1637 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, |
01649561 JS |
1638 | "6144 Outstanding NVME I/O Abort Request " |
1639 | "still pending on nvme_fcreq %p, " | |
2b7824d0 JS |
1640 | "lpfc_ncmd %p xri x%x\n", |
1641 | pnvme_fcreq, lpfc_nbuf, | |
1642 | nvmereq_wqe->sli4_xritag); | |
01649561 JS |
1643 | return; |
1644 | } | |
1645 | ||
1646 | abts_buf = __lpfc_sli_get_iocbq(phba); | |
1647 | if (!abts_buf) { | |
1648 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
86c67379 | 1649 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, |
01649561 | 1650 | "6136 No available abort wqes. Skipping " |
2b7824d0 JS |
1651 | "Abts req for nvme_fcreq %p xri x%x\n", |
1652 | pnvme_fcreq, nvmereq_wqe->sli4_xritag); | |
01649561 JS |
1653 | return; |
1654 | } | |
1655 | ||
1656 | /* Ready - mark outstanding as aborted by driver. */ | |
1657 | nvmereq_wqe->iocb_flag |= LPFC_DRIVER_ABORTED; | |
1658 | ||
1659 | /* Complete prepping the abort wqe and issue to the FW. */ | |
1660 | abts_wqe = &abts_buf->wqe; | |
1661 | ||
1662 | /* WQEs are reused. Clear stale data and set key fields to | |
1663 | * zero like ia, iaab, iaar, xri_tag, and ctxt_tag. | |
1664 | */ | |
1665 | memset(abts_wqe, 0, sizeof(union lpfc_wqe)); | |
1666 | bf_set(abort_cmd_criteria, &abts_wqe->abort_cmd, T_XRI_TAG); | |
1667 | ||
1668 | /* word 7 */ | |
1669 | bf_set(wqe_ct, &abts_wqe->abort_cmd.wqe_com, 0); | |
1670 | bf_set(wqe_cmnd, &abts_wqe->abort_cmd.wqe_com, CMD_ABORT_XRI_CX); | |
1671 | bf_set(wqe_class, &abts_wqe->abort_cmd.wqe_com, | |
1672 | nvmereq_wqe->iocb.ulpClass); | |
1673 | ||
1674 | /* word 8 - tell the FW to abort the IO associated with this | |
1675 | * outstanding exchange ID. | |
1676 | */ | |
1677 | abts_wqe->abort_cmd.wqe_com.abort_tag = nvmereq_wqe->sli4_xritag; | |
1678 | ||
1679 | /* word 9 - this is the iotag for the abts_wqe completion. */ | |
1680 | bf_set(wqe_reqtag, &abts_wqe->abort_cmd.wqe_com, | |
1681 | abts_buf->iotag); | |
1682 | ||
1683 | /* word 10 */ | |
1684 | bf_set(wqe_wqid, &abts_wqe->abort_cmd.wqe_com, nvmereq_wqe->hba_wqidx); | |
1685 | bf_set(wqe_qosd, &abts_wqe->abort_cmd.wqe_com, 1); | |
1686 | bf_set(wqe_lenloc, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_LENLOC_NONE); | |
1687 | ||
1688 | /* word 11 */ | |
1689 | bf_set(wqe_cmd_type, &abts_wqe->abort_cmd.wqe_com, OTHER_COMMAND); | |
1690 | bf_set(wqe_wqec, &abts_wqe->abort_cmd.wqe_com, 1); | |
1691 | bf_set(wqe_cqid, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); | |
1692 | ||
1693 | /* ABTS WQE must go to the same WQ as the WQE to be aborted */ | |
1694 | abts_buf->iocb_flag |= LPFC_IO_NVME; | |
1695 | abts_buf->hba_wqidx = nvmereq_wqe->hba_wqidx; | |
1696 | abts_buf->vport = vport; | |
1697 | abts_buf->wqe_cmpl = lpfc_nvme_abort_fcreq_cmpl; | |
1698 | ret_val = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, abts_buf); | |
1699 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
cd22d605 | 1700 | if (ret_val) { |
86c67379 | 1701 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, |
01649561 JS |
1702 | "6137 Failed abts issue_wqe with status x%x " |
1703 | "for nvme_fcreq %p.\n", | |
1704 | ret_val, pnvme_fcreq); | |
1705 | lpfc_sli_release_iocbq(phba, abts_buf); | |
1706 | return; | |
1707 | } | |
1708 | ||
86c67379 | 1709 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, |
2b7824d0 | 1710 | "6138 Transport Abort NVME Request Issued for " |
01649561 JS |
1711 | "ox_id x%x on reqtag x%x\n", |
1712 | nvmereq_wqe->sli4_xritag, | |
1713 | abts_buf->iotag); | |
1714 | } | |
1715 | ||
1716 | /* Declare and initialization an instance of the FC NVME template. */ | |
1717 | static struct nvme_fc_port_template lpfc_nvme_template = { | |
1718 | /* initiator-based functions */ | |
1719 | .localport_delete = lpfc_nvme_localport_delete, | |
1720 | .remoteport_delete = lpfc_nvme_remoteport_delete, | |
1721 | .create_queue = lpfc_nvme_create_queue, | |
1722 | .delete_queue = lpfc_nvme_delete_queue, | |
1723 | .ls_req = lpfc_nvme_ls_req, | |
1724 | .fcp_io = lpfc_nvme_fcp_io_submit, | |
1725 | .ls_abort = lpfc_nvme_ls_abort, | |
1726 | .fcp_abort = lpfc_nvme_fcp_abort, | |
1727 | ||
1728 | .max_hw_queues = 1, | |
1729 | .max_sgl_segments = LPFC_NVME_DEFAULT_SEGS, | |
1730 | .max_dif_sgl_segments = LPFC_NVME_DEFAULT_SEGS, | |
1731 | .dma_boundary = 0xFFFFFFFF, | |
1732 | ||
1733 | /* Sizes of additional private data for data structures. | |
1734 | * No use for the last two sizes at this time. | |
1735 | */ | |
1736 | .local_priv_sz = sizeof(struct lpfc_nvme_lport), | |
1737 | .remote_priv_sz = sizeof(struct lpfc_nvme_rport), | |
1738 | .lsrqst_priv_sz = 0, | |
bbe3012b | 1739 | .fcprqst_priv_sz = sizeof(struct lpfc_nvme_fcpreq_priv), |
01649561 JS |
1740 | }; |
1741 | ||
1742 | /** | |
1743 | * lpfc_sli4_post_nvme_sgl_block - post a block of nvme sgl list to firmware | |
1744 | * @phba: pointer to lpfc hba data structure. | |
1745 | * @nblist: pointer to nvme buffer list. | |
1746 | * @count: number of scsi buffers on the list. | |
1747 | * | |
1748 | * This routine is invoked to post a block of @count scsi sgl pages from a | |
1749 | * SCSI buffer list @nblist to the HBA using non-embedded mailbox command. | |
1750 | * No Lock is held. | |
1751 | * | |
1752 | **/ | |
1753 | static int | |
1754 | lpfc_sli4_post_nvme_sgl_block(struct lpfc_hba *phba, | |
1755 | struct list_head *nblist, | |
1756 | int count) | |
1757 | { | |
1758 | struct lpfc_nvme_buf *lpfc_ncmd; | |
1759 | struct lpfc_mbx_post_uembed_sgl_page1 *sgl; | |
1760 | struct sgl_page_pairs *sgl_pg_pairs; | |
1761 | void *viraddr; | |
1762 | LPFC_MBOXQ_t *mbox; | |
1763 | uint32_t reqlen, alloclen, pg_pairs; | |
1764 | uint32_t mbox_tmo; | |
1765 | uint16_t xritag_start = 0; | |
1766 | int rc = 0; | |
1767 | uint32_t shdr_status, shdr_add_status; | |
1768 | dma_addr_t pdma_phys_bpl1; | |
1769 | union lpfc_sli4_cfg_shdr *shdr; | |
1770 | ||
1771 | /* Calculate the requested length of the dma memory */ | |
1772 | reqlen = count * sizeof(struct sgl_page_pairs) + | |
1773 | sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t); | |
1774 | if (reqlen > SLI4_PAGE_SIZE) { | |
1775 | lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, | |
1776 | "6118 Block sgl registration required DMA " | |
1777 | "size (%d) great than a page\n", reqlen); | |
1778 | return -ENOMEM; | |
1779 | } | |
1780 | mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); | |
1781 | if (!mbox) { | |
1782 | lpfc_printf_log(phba, KERN_ERR, LOG_INIT, | |
1783 | "6119 Failed to allocate mbox cmd memory\n"); | |
1784 | return -ENOMEM; | |
1785 | } | |
1786 | ||
1787 | /* Allocate DMA memory and set up the non-embedded mailbox command */ | |
1788 | alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, | |
1789 | LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, reqlen, | |
1790 | LPFC_SLI4_MBX_NEMBED); | |
1791 | ||
1792 | if (alloclen < reqlen) { | |
1793 | lpfc_printf_log(phba, KERN_ERR, LOG_INIT, | |
1794 | "6120 Allocated DMA memory size (%d) is " | |
1795 | "less than the requested DMA memory " | |
1796 | "size (%d)\n", alloclen, reqlen); | |
1797 | lpfc_sli4_mbox_cmd_free(phba, mbox); | |
1798 | return -ENOMEM; | |
1799 | } | |
1800 | ||
1801 | /* Get the first SGE entry from the non-embedded DMA memory */ | |
1802 | viraddr = mbox->sge_array->addr[0]; | |
1803 | ||
1804 | /* Set up the SGL pages in the non-embedded DMA pages */ | |
1805 | sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr; | |
1806 | sgl_pg_pairs = &sgl->sgl_pg_pairs; | |
1807 | ||
1808 | pg_pairs = 0; | |
1809 | list_for_each_entry(lpfc_ncmd, nblist, list) { | |
1810 | /* Set up the sge entry */ | |
1811 | sgl_pg_pairs->sgl_pg0_addr_lo = | |
1812 | cpu_to_le32(putPaddrLow(lpfc_ncmd->dma_phys_sgl)); | |
1813 | sgl_pg_pairs->sgl_pg0_addr_hi = | |
1814 | cpu_to_le32(putPaddrHigh(lpfc_ncmd->dma_phys_sgl)); | |
1815 | if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE) | |
1816 | pdma_phys_bpl1 = lpfc_ncmd->dma_phys_sgl + | |
1817 | SGL_PAGE_SIZE; | |
1818 | else | |
1819 | pdma_phys_bpl1 = 0; | |
1820 | sgl_pg_pairs->sgl_pg1_addr_lo = | |
1821 | cpu_to_le32(putPaddrLow(pdma_phys_bpl1)); | |
1822 | sgl_pg_pairs->sgl_pg1_addr_hi = | |
1823 | cpu_to_le32(putPaddrHigh(pdma_phys_bpl1)); | |
1824 | /* Keep the first xritag on the list */ | |
1825 | if (pg_pairs == 0) | |
1826 | xritag_start = lpfc_ncmd->cur_iocbq.sli4_xritag; | |
1827 | sgl_pg_pairs++; | |
1828 | pg_pairs++; | |
1829 | } | |
1830 | bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start); | |
1831 | bf_set(lpfc_post_sgl_pages_xricnt, sgl, pg_pairs); | |
1832 | /* Perform endian conversion if necessary */ | |
1833 | sgl->word0 = cpu_to_le32(sgl->word0); | |
1834 | ||
1835 | if (!phba->sli4_hba.intr_enable) | |
1836 | rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); | |
1837 | else { | |
1838 | mbox_tmo = lpfc_mbox_tmo_val(phba, mbox); | |
1839 | rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo); | |
1840 | } | |
1841 | shdr = (union lpfc_sli4_cfg_shdr *)&sgl->cfg_shdr; | |
1842 | shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); | |
1843 | shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); | |
1844 | if (rc != MBX_TIMEOUT) | |
1845 | lpfc_sli4_mbox_cmd_free(phba, mbox); | |
1846 | if (shdr_status || shdr_add_status || rc) { | |
1847 | lpfc_printf_log(phba, KERN_ERR, LOG_SLI, | |
1848 | "6125 POST_SGL_BLOCK mailbox command failed " | |
1849 | "status x%x add_status x%x mbx status x%x\n", | |
1850 | shdr_status, shdr_add_status, rc); | |
1851 | rc = -ENXIO; | |
1852 | } | |
1853 | return rc; | |
1854 | } | |
1855 | ||
1856 | /** | |
1857 | * lpfc_post_nvme_sgl_list - Post blocks of nvme buffer sgls from a list | |
1858 | * @phba: pointer to lpfc hba data structure. | |
1859 | * @post_nblist: pointer to the nvme buffer list. | |
1860 | * | |
1861 | * This routine walks a list of nvme buffers that was passed in. It attempts | |
1862 | * to construct blocks of nvme buffer sgls which contains contiguous xris and | |
1863 | * uses the non-embedded SGL block post mailbox commands to post to the port. | |
1864 | * For single NVME buffer sgl with non-contiguous xri, if any, it shall use | |
1865 | * embedded SGL post mailbox command for posting. The @post_nblist passed in | |
1866 | * must be local list, thus no lock is needed when manipulate the list. | |
1867 | * | |
1868 | * Returns: 0 = failure, non-zero number of successfully posted buffers. | |
1869 | **/ | |
1870 | static int | |
1871 | lpfc_post_nvme_sgl_list(struct lpfc_hba *phba, | |
1872 | struct list_head *post_nblist, int sb_count) | |
1873 | { | |
1874 | struct lpfc_nvme_buf *lpfc_ncmd, *lpfc_ncmd_next; | |
1875 | int status, sgl_size; | |
1876 | int post_cnt = 0, block_cnt = 0, num_posting = 0, num_posted = 0; | |
1877 | dma_addr_t pdma_phys_sgl1; | |
1878 | int last_xritag = NO_XRI; | |
1879 | int cur_xritag; | |
1880 | LIST_HEAD(prep_nblist); | |
1881 | LIST_HEAD(blck_nblist); | |
1882 | LIST_HEAD(nvme_nblist); | |
1883 | ||
1884 | /* sanity check */ | |
1885 | if (sb_count <= 0) | |
1886 | return -EINVAL; | |
1887 | ||
1888 | sgl_size = phba->cfg_sg_dma_buf_size; | |
1889 | ||
1890 | list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next, post_nblist, list) { | |
1891 | list_del_init(&lpfc_ncmd->list); | |
1892 | block_cnt++; | |
1893 | if ((last_xritag != NO_XRI) && | |
1894 | (lpfc_ncmd->cur_iocbq.sli4_xritag != last_xritag + 1)) { | |
1895 | /* a hole in xri block, form a sgl posting block */ | |
1896 | list_splice_init(&prep_nblist, &blck_nblist); | |
1897 | post_cnt = block_cnt - 1; | |
1898 | /* prepare list for next posting block */ | |
1899 | list_add_tail(&lpfc_ncmd->list, &prep_nblist); | |
1900 | block_cnt = 1; | |
1901 | } else { | |
1902 | /* prepare list for next posting block */ | |
1903 | list_add_tail(&lpfc_ncmd->list, &prep_nblist); | |
1904 | /* enough sgls for non-embed sgl mbox command */ | |
1905 | if (block_cnt == LPFC_NEMBED_MBOX_SGL_CNT) { | |
1906 | list_splice_init(&prep_nblist, &blck_nblist); | |
1907 | post_cnt = block_cnt; | |
1908 | block_cnt = 0; | |
1909 | } | |
1910 | } | |
1911 | num_posting++; | |
1912 | last_xritag = lpfc_ncmd->cur_iocbq.sli4_xritag; | |
1913 | ||
1914 | /* end of repost sgl list condition for NVME buffers */ | |
1915 | if (num_posting == sb_count) { | |
1916 | if (post_cnt == 0) { | |
1917 | /* last sgl posting block */ | |
1918 | list_splice_init(&prep_nblist, &blck_nblist); | |
1919 | post_cnt = block_cnt; | |
1920 | } else if (block_cnt == 1) { | |
1921 | /* last single sgl with non-contiguous xri */ | |
1922 | if (sgl_size > SGL_PAGE_SIZE) | |
1923 | pdma_phys_sgl1 = | |
1924 | lpfc_ncmd->dma_phys_sgl + | |
1925 | SGL_PAGE_SIZE; | |
1926 | else | |
1927 | pdma_phys_sgl1 = 0; | |
1928 | cur_xritag = lpfc_ncmd->cur_iocbq.sli4_xritag; | |
1929 | status = lpfc_sli4_post_sgl(phba, | |
1930 | lpfc_ncmd->dma_phys_sgl, | |
1931 | pdma_phys_sgl1, cur_xritag); | |
1932 | if (status) { | |
1933 | /* failure, put on abort nvme list */ | |
318083ad | 1934 | lpfc_ncmd->flags |= LPFC_SBUF_XBUSY; |
01649561 JS |
1935 | } else { |
1936 | /* success, put on NVME buffer list */ | |
318083ad | 1937 | lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY; |
01649561 JS |
1938 | lpfc_ncmd->status = IOSTAT_SUCCESS; |
1939 | num_posted++; | |
1940 | } | |
1941 | /* success, put on NVME buffer sgl list */ | |
1942 | list_add_tail(&lpfc_ncmd->list, &nvme_nblist); | |
1943 | } | |
1944 | } | |
1945 | ||
1946 | /* continue until a nembed page worth of sgls */ | |
1947 | if (post_cnt == 0) | |
1948 | continue; | |
1949 | ||
1950 | /* post block of NVME buffer list sgls */ | |
1951 | status = lpfc_sli4_post_nvme_sgl_block(phba, &blck_nblist, | |
1952 | post_cnt); | |
1953 | ||
1954 | /* don't reset xirtag due to hole in xri block */ | |
1955 | if (block_cnt == 0) | |
1956 | last_xritag = NO_XRI; | |
1957 | ||
1958 | /* reset NVME buffer post count for next round of posting */ | |
1959 | post_cnt = 0; | |
1960 | ||
1961 | /* put posted NVME buffer-sgl posted on NVME buffer sgl list */ | |
1962 | while (!list_empty(&blck_nblist)) { | |
1963 | list_remove_head(&blck_nblist, lpfc_ncmd, | |
1964 | struct lpfc_nvme_buf, list); | |
1965 | if (status) { | |
1966 | /* failure, put on abort nvme list */ | |
318083ad | 1967 | lpfc_ncmd->flags |= LPFC_SBUF_XBUSY; |
01649561 JS |
1968 | } else { |
1969 | /* success, put on NVME buffer list */ | |
318083ad | 1970 | lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY; |
01649561 JS |
1971 | lpfc_ncmd->status = IOSTAT_SUCCESS; |
1972 | num_posted++; | |
1973 | } | |
1974 | list_add_tail(&lpfc_ncmd->list, &nvme_nblist); | |
1975 | } | |
1976 | } | |
1977 | /* Push NVME buffers with sgl posted to the available list */ | |
1978 | while (!list_empty(&nvme_nblist)) { | |
1979 | list_remove_head(&nvme_nblist, lpfc_ncmd, | |
1980 | struct lpfc_nvme_buf, list); | |
1981 | lpfc_release_nvme_buf(phba, lpfc_ncmd); | |
1982 | } | |
1983 | return num_posted; | |
1984 | } | |
1985 | ||
1986 | /** | |
1987 | * lpfc_repost_nvme_sgl_list - Repost all the allocated nvme buffer sgls | |
1988 | * @phba: pointer to lpfc hba data structure. | |
1989 | * | |
1990 | * This routine walks the list of nvme buffers that have been allocated and | |
1991 | * repost them to the port by using SGL block post. This is needed after a | |
1992 | * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine | |
1993 | * is responsible for moving all nvme buffers on the lpfc_abts_nvme_sgl_list | |
1994 | * to the lpfc_nvme_buf_list. If the repost fails, reject all nvme buffers. | |
1995 | * | |
1996 | * Returns: 0 = success, non-zero failure. | |
1997 | **/ | |
1998 | int | |
1999 | lpfc_repost_nvme_sgl_list(struct lpfc_hba *phba) | |
2000 | { | |
2001 | LIST_HEAD(post_nblist); | |
2002 | int num_posted, rc = 0; | |
2003 | ||
2004 | /* get all NVME buffers need to repost to a local list */ | |
2005 | spin_lock_irq(&phba->nvme_buf_list_get_lock); | |
2006 | spin_lock(&phba->nvme_buf_list_put_lock); | |
2007 | list_splice_init(&phba->lpfc_nvme_buf_list_get, &post_nblist); | |
2008 | list_splice(&phba->lpfc_nvme_buf_list_put, &post_nblist); | |
cf1a1d3e JS |
2009 | phba->get_nvme_bufs = 0; |
2010 | phba->put_nvme_bufs = 0; | |
01649561 JS |
2011 | spin_unlock(&phba->nvme_buf_list_put_lock); |
2012 | spin_unlock_irq(&phba->nvme_buf_list_get_lock); | |
2013 | ||
2014 | /* post the list of nvme buffer sgls to port if available */ | |
2015 | if (!list_empty(&post_nblist)) { | |
2016 | num_posted = lpfc_post_nvme_sgl_list(phba, &post_nblist, | |
2017 | phba->sli4_hba.nvme_xri_cnt); | |
2018 | /* failed to post any nvme buffer, return error */ | |
2019 | if (num_posted == 0) | |
2020 | rc = -EIO; | |
2021 | } | |
2022 | return rc; | |
2023 | } | |
2024 | ||
2025 | /** | |
2026 | * lpfc_new_nvme_buf - Scsi buffer allocator for HBA with SLI4 IF spec | |
2027 | * @vport: The virtual port for which this call being executed. | |
2028 | * @num_to_allocate: The requested number of buffers to allocate. | |
2029 | * | |
2030 | * This routine allocates nvme buffers for device with SLI-4 interface spec, | |
2031 | * the nvme buffer contains all the necessary information needed to initiate | |
2032 | * a NVME I/O. After allocating up to @num_to_allocate NVME buffers and put | |
2033 | * them on a list, it post them to the port by using SGL block post. | |
2034 | * | |
2035 | * Return codes: | |
2036 | * int - number of nvme buffers that were allocated and posted. | |
2037 | * 0 = failure, less than num_to_alloc is a partial failure. | |
2038 | **/ | |
2039 | static int | |
2040 | lpfc_new_nvme_buf(struct lpfc_vport *vport, int num_to_alloc) | |
2041 | { | |
2042 | struct lpfc_hba *phba = vport->phba; | |
2043 | struct lpfc_nvme_buf *lpfc_ncmd; | |
2044 | struct lpfc_iocbq *pwqeq; | |
2045 | union lpfc_wqe128 *wqe; | |
2046 | struct sli4_sge *sgl; | |
2047 | dma_addr_t pdma_phys_sgl; | |
2048 | uint16_t iotag, lxri = 0; | |
2049 | int bcnt, num_posted, sgl_size; | |
2050 | LIST_HEAD(prep_nblist); | |
2051 | LIST_HEAD(post_nblist); | |
2052 | LIST_HEAD(nvme_nblist); | |
2053 | ||
2054 | sgl_size = phba->cfg_sg_dma_buf_size; | |
2055 | ||
2056 | for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { | |
2057 | lpfc_ncmd = kzalloc(sizeof(struct lpfc_nvme_buf), GFP_KERNEL); | |
2058 | if (!lpfc_ncmd) | |
2059 | break; | |
2060 | /* | |
2061 | * Get memory from the pci pool to map the virt space to | |
2062 | * pci bus space for an I/O. The DMA buffer includes the | |
2063 | * number of SGE's necessary to support the sg_tablesize. | |
2064 | */ | |
df2f7729 TM |
2065 | lpfc_ncmd->data = dma_pool_zalloc(phba->lpfc_sg_dma_buf_pool, |
2066 | GFP_KERNEL, | |
2067 | &lpfc_ncmd->dma_handle); | |
01649561 JS |
2068 | if (!lpfc_ncmd->data) { |
2069 | kfree(lpfc_ncmd); | |
2070 | break; | |
2071 | } | |
01649561 JS |
2072 | |
2073 | lxri = lpfc_sli4_next_xritag(phba); | |
2074 | if (lxri == NO_XRI) { | |
771db5c0 | 2075 | dma_pool_free(phba->lpfc_sg_dma_buf_pool, |
01649561 JS |
2076 | lpfc_ncmd->data, lpfc_ncmd->dma_handle); |
2077 | kfree(lpfc_ncmd); | |
2078 | break; | |
2079 | } | |
2080 | pwqeq = &(lpfc_ncmd->cur_iocbq); | |
2081 | wqe = (union lpfc_wqe128 *)&pwqeq->wqe; | |
2082 | ||
2083 | /* Allocate iotag for lpfc_ncmd->cur_iocbq. */ | |
2084 | iotag = lpfc_sli_next_iotag(phba, pwqeq); | |
2085 | if (iotag == 0) { | |
771db5c0 | 2086 | dma_pool_free(phba->lpfc_sg_dma_buf_pool, |
01649561 JS |
2087 | lpfc_ncmd->data, lpfc_ncmd->dma_handle); |
2088 | kfree(lpfc_ncmd); | |
2089 | lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, | |
2090 | "6121 Failed to allocated IOTAG for" | |
2091 | " XRI:0x%x\n", lxri); | |
2092 | lpfc_sli4_free_xri(phba, lxri); | |
2093 | break; | |
2094 | } | |
2095 | pwqeq->sli4_lxritag = lxri; | |
2096 | pwqeq->sli4_xritag = phba->sli4_hba.xri_ids[lxri]; | |
2097 | pwqeq->iocb_flag |= LPFC_IO_NVME; | |
2098 | pwqeq->context1 = lpfc_ncmd; | |
2099 | pwqeq->wqe_cmpl = lpfc_nvme_io_cmd_wqe_cmpl; | |
2100 | ||
2101 | /* Initialize local short-hand pointers. */ | |
2102 | lpfc_ncmd->nvme_sgl = lpfc_ncmd->data; | |
2103 | sgl = lpfc_ncmd->nvme_sgl; | |
2104 | pdma_phys_sgl = lpfc_ncmd->dma_handle; | |
2105 | lpfc_ncmd->dma_phys_sgl = pdma_phys_sgl; | |
2106 | ||
2107 | /* Rsp SGE will be filled in when we rcv an IO | |
2108 | * from the NVME Layer to be sent. | |
2109 | * The cmd is going to be embedded so we need a SKIP SGE. | |
2110 | */ | |
2111 | bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); | |
2112 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
2113 | sgl->word2 = cpu_to_le32(sgl->word2); | |
2114 | /* Fill in word 3 / sgl_len during cmd submission */ | |
2115 | ||
2116 | lpfc_ncmd->cur_iocbq.context1 = lpfc_ncmd; | |
2117 | ||
2118 | /* Word 7 */ | |
2119 | bf_set(wqe_erp, &wqe->generic.wqe_com, 0); | |
2120 | /* NVME upper layers will time things out, if needed */ | |
2121 | bf_set(wqe_tmo, &wqe->generic.wqe_com, 0); | |
2122 | ||
2123 | /* Word 10 */ | |
2124 | bf_set(wqe_ebde_cnt, &wqe->generic.wqe_com, 0); | |
2125 | bf_set(wqe_dbde, &wqe->generic.wqe_com, 1); | |
2126 | ||
2127 | /* add the nvme buffer to a post list */ | |
2128 | list_add_tail(&lpfc_ncmd->list, &post_nblist); | |
2129 | spin_lock_irq(&phba->nvme_buf_list_get_lock); | |
2130 | phba->sli4_hba.nvme_xri_cnt++; | |
2131 | spin_unlock_irq(&phba->nvme_buf_list_get_lock); | |
2132 | } | |
2133 | lpfc_printf_log(phba, KERN_INFO, LOG_NVME, | |
2134 | "6114 Allocate %d out of %d requested new NVME " | |
2135 | "buffers\n", bcnt, num_to_alloc); | |
2136 | ||
2137 | /* post the list of nvme buffer sgls to port if available */ | |
2138 | if (!list_empty(&post_nblist)) | |
2139 | num_posted = lpfc_post_nvme_sgl_list(phba, | |
2140 | &post_nblist, bcnt); | |
2141 | else | |
2142 | num_posted = 0; | |
2143 | ||
2144 | return num_posted; | |
2145 | } | |
2146 | ||
cf1a1d3e JS |
2147 | static inline struct lpfc_nvme_buf * |
2148 | lpfc_nvme_buf(struct lpfc_hba *phba) | |
2149 | { | |
2150 | struct lpfc_nvme_buf *lpfc_ncmd, *lpfc_ncmd_next; | |
2151 | ||
2152 | list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next, | |
2153 | &phba->lpfc_nvme_buf_list_get, list) { | |
2154 | list_del_init(&lpfc_ncmd->list); | |
2155 | phba->get_nvme_bufs--; | |
2156 | return lpfc_ncmd; | |
2157 | } | |
2158 | return NULL; | |
2159 | } | |
2160 | ||
01649561 JS |
2161 | /** |
2162 | * lpfc_get_nvme_buf - Get a nvme buffer from lpfc_nvme_buf_list of the HBA | |
2163 | * @phba: The HBA for which this call is being executed. | |
2164 | * | |
2165 | * This routine removes a nvme buffer from head of @phba lpfc_nvme_buf_list list | |
2166 | * and returns to caller. | |
2167 | * | |
2168 | * Return codes: | |
2169 | * NULL - Error | |
2170 | * Pointer to lpfc_nvme_buf - Success | |
2171 | **/ | |
2172 | static struct lpfc_nvme_buf * | |
cf1a1d3e JS |
2173 | lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, |
2174 | int expedite) | |
01649561 | 2175 | { |
cf1a1d3e | 2176 | struct lpfc_nvme_buf *lpfc_ncmd = NULL; |
01649561 | 2177 | unsigned long iflag = 0; |
01649561 JS |
2178 | |
2179 | spin_lock_irqsave(&phba->nvme_buf_list_get_lock, iflag); | |
cf1a1d3e JS |
2180 | if (phba->get_nvme_bufs > LPFC_NVME_EXPEDITE_XRICNT || expedite) |
2181 | lpfc_ncmd = lpfc_nvme_buf(phba); | |
2182 | if (!lpfc_ncmd) { | |
01649561 JS |
2183 | spin_lock(&phba->nvme_buf_list_put_lock); |
2184 | list_splice(&phba->lpfc_nvme_buf_list_put, | |
2185 | &phba->lpfc_nvme_buf_list_get); | |
cf1a1d3e | 2186 | phba->get_nvme_bufs += phba->put_nvme_bufs; |
01649561 | 2187 | INIT_LIST_HEAD(&phba->lpfc_nvme_buf_list_put); |
cf1a1d3e | 2188 | phba->put_nvme_bufs = 0; |
01649561 | 2189 | spin_unlock(&phba->nvme_buf_list_put_lock); |
cf1a1d3e JS |
2190 | if (phba->get_nvme_bufs > LPFC_NVME_EXPEDITE_XRICNT || expedite) |
2191 | lpfc_ncmd = lpfc_nvme_buf(phba); | |
01649561 JS |
2192 | } |
2193 | spin_unlock_irqrestore(&phba->nvme_buf_list_get_lock, iflag); | |
01649561 JS |
2194 | return lpfc_ncmd; |
2195 | } | |
2196 | ||
2197 | /** | |
2198 | * lpfc_release_nvme_buf: Return a nvme buffer back to hba nvme buf list. | |
2199 | * @phba: The Hba for which this call is being executed. | |
2200 | * @lpfc_ncmd: The nvme buffer which is being released. | |
2201 | * | |
2202 | * This routine releases @lpfc_ncmd nvme buffer by adding it to tail of @phba | |
2203 | * lpfc_nvme_buf_list list. For SLI4 XRI's are tied to the nvme buffer | |
2204 | * and cannot be reused for at least RA_TOV amount of time if it was | |
2205 | * aborted. | |
2206 | **/ | |
2207 | static void | |
2208 | lpfc_release_nvme_buf(struct lpfc_hba *phba, struct lpfc_nvme_buf *lpfc_ncmd) | |
2209 | { | |
2210 | unsigned long iflag = 0; | |
2211 | ||
2212 | lpfc_ncmd->nonsg_phys = 0; | |
318083ad | 2213 | if (lpfc_ncmd->flags & LPFC_SBUF_XBUSY) { |
86c67379 JS |
2214 | lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, |
2215 | "6310 XB release deferred for " | |
2216 | "ox_id x%x on reqtag x%x\n", | |
2217 | lpfc_ncmd->cur_iocbq.sli4_xritag, | |
2218 | lpfc_ncmd->cur_iocbq.iotag); | |
2219 | ||
01649561 JS |
2220 | spin_lock_irqsave(&phba->sli4_hba.abts_nvme_buf_list_lock, |
2221 | iflag); | |
01649561 JS |
2222 | list_add_tail(&lpfc_ncmd->list, |
2223 | &phba->sli4_hba.lpfc_abts_nvme_buf_list); | |
2224 | spin_unlock_irqrestore(&phba->sli4_hba.abts_nvme_buf_list_lock, | |
2225 | iflag); | |
2226 | } else { | |
2227 | lpfc_ncmd->nvmeCmd = NULL; | |
2228 | lpfc_ncmd->cur_iocbq.iocb_flag = LPFC_IO_NVME; | |
2229 | spin_lock_irqsave(&phba->nvme_buf_list_put_lock, iflag); | |
2230 | list_add_tail(&lpfc_ncmd->list, &phba->lpfc_nvme_buf_list_put); | |
cf1a1d3e | 2231 | phba->put_nvme_bufs++; |
01649561 JS |
2232 | spin_unlock_irqrestore(&phba->nvme_buf_list_put_lock, iflag); |
2233 | } | |
2234 | } | |
2235 | ||
2236 | /** | |
2237 | * lpfc_nvme_create_localport - Create/Bind an nvme localport instance. | |
2238 | * @pvport - the lpfc_vport instance requesting a localport. | |
2239 | * | |
2240 | * This routine is invoked to create an nvme localport instance to bind | |
2241 | * to the nvme_fc_transport. It is called once during driver load | |
2242 | * like lpfc_create_shost after all other services are initialized. | |
2243 | * It requires a vport, vpi, and wwns at call time. Other localport | |
2244 | * parameters are modified as the driver's FCID and the Fabric WWN | |
2245 | * are established. | |
2246 | * | |
2247 | * Return codes | |
2248 | * 0 - successful | |
2249 | * -ENOMEM - no heap memory available | |
2250 | * other values - from nvme registration upcall | |
2251 | **/ | |
2252 | int | |
2253 | lpfc_nvme_create_localport(struct lpfc_vport *vport) | |
2254 | { | |
166d7211 | 2255 | int ret = 0; |
01649561 JS |
2256 | struct lpfc_hba *phba = vport->phba; |
2257 | struct nvme_fc_port_info nfcp_info; | |
2258 | struct nvme_fc_local_port *localport; | |
2259 | struct lpfc_nvme_lport *lport; | |
166d7211 | 2260 | int len; |
01649561 JS |
2261 | |
2262 | /* Initialize this localport instance. The vport wwn usage ensures | |
2263 | * that NPIV is accounted for. | |
2264 | */ | |
2265 | memset(&nfcp_info, 0, sizeof(struct nvme_fc_port_info)); | |
2266 | nfcp_info.port_role = FC_PORT_ROLE_NVME_INITIATOR; | |
2267 | nfcp_info.node_name = wwn_to_u64(vport->fc_nodename.u.wwn); | |
2268 | nfcp_info.port_name = wwn_to_u64(vport->fc_portname.u.wwn); | |
2269 | ||
4d4c4a4a JS |
2270 | /* Limit to LPFC_MAX_NVME_SEG_CNT. |
2271 | * For now need + 1 to get around NVME transport logic. | |
2272 | */ | |
2273 | if (phba->cfg_sg_seg_cnt > LPFC_MAX_NVME_SEG_CNT) { | |
2274 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME | LOG_INIT, | |
2275 | "6300 Reducing sg segment cnt to %d\n", | |
2276 | LPFC_MAX_NVME_SEG_CNT); | |
2277 | phba->cfg_nvme_seg_cnt = LPFC_MAX_NVME_SEG_CNT; | |
2278 | } else { | |
2279 | phba->cfg_nvme_seg_cnt = phba->cfg_sg_seg_cnt; | |
2280 | } | |
2281 | lpfc_nvme_template.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1; | |
01649561 JS |
2282 | lpfc_nvme_template.max_hw_queues = phba->cfg_nvme_io_channel; |
2283 | ||
2284 | /* localport is allocated from the stack, but the registration | |
2285 | * call allocates heap memory as well as the private area. | |
2286 | */ | |
7d708033 | 2287 | #if (IS_ENABLED(CONFIG_NVME_FC)) |
01649561 JS |
2288 | ret = nvme_fc_register_localport(&nfcp_info, &lpfc_nvme_template, |
2289 | &vport->phba->pcidev->dev, &localport); | |
166d7211 JS |
2290 | #else |
2291 | ret = -ENOMEM; | |
2292 | #endif | |
01649561 JS |
2293 | if (!ret) { |
2294 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME | LOG_NVME_DISC, | |
2295 | "6005 Successfully registered local " | |
2296 | "NVME port num %d, localP %p, private %p, " | |
2297 | "sg_seg %d\n", | |
2298 | localport->port_num, localport, | |
2299 | localport->private, | |
2300 | lpfc_nvme_template.max_sgl_segments); | |
2301 | ||
2302 | /* Private is our lport size declared in the template. */ | |
2303 | lport = (struct lpfc_nvme_lport *)localport->private; | |
2304 | vport->localport = localport; | |
2305 | lport->vport = vport; | |
01649561 | 2306 | vport->nvmei_support = 1; |
6b486ce9 DK |
2307 | |
2308 | /* Don't post more new bufs if repost already recovered | |
2309 | * the nvme sgls. | |
2310 | */ | |
2311 | if (phba->sli4_hba.nvme_xri_cnt == 0) { | |
2312 | len = lpfc_new_nvme_buf(vport, | |
2313 | phba->sli4_hba.nvme_xri_max); | |
2314 | vport->phba->total_nvme_bufs += len; | |
2315 | } | |
01649561 JS |
2316 | } |
2317 | ||
01649561 JS |
2318 | return ret; |
2319 | } | |
2320 | ||
add9d6be JS |
2321 | /* lpfc_nvme_lport_unreg_wait - Wait for the host to complete an lport unreg. |
2322 | * | |
2323 | * The driver has to wait for the host nvme transport to callback | |
2324 | * indicating the localport has successfully unregistered all | |
2325 | * resources. Since this is an uninterruptible wait, loop every ten | |
2326 | * seconds and print a message indicating no progress. | |
2327 | * | |
2328 | * An uninterruptible wait is used because of the risk of transport-to- | |
2329 | * driver state mismatch. | |
2330 | */ | |
2331 | void | |
2332 | lpfc_nvme_lport_unreg_wait(struct lpfc_vport *vport, | |
2333 | struct lpfc_nvme_lport *lport) | |
2334 | { | |
2335 | #if (IS_ENABLED(CONFIG_NVME_FC)) | |
2336 | u32 wait_tmo; | |
2337 | int ret; | |
2338 | ||
2339 | /* Host transport has to clean up and confirm requiring an indefinite | |
2340 | * wait. Print a message if a 10 second wait expires and renew the | |
2341 | * wait. This is unexpected. | |
2342 | */ | |
2343 | wait_tmo = msecs_to_jiffies(LPFC_NVME_WAIT_TMO * 1000); | |
2344 | while (true) { | |
2345 | ret = wait_for_completion_timeout(&lport->lport_unreg_done, | |
2346 | wait_tmo); | |
2347 | if (unlikely(!ret)) { | |
2348 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, | |
2349 | "6176 Lport %p Localport %p wait " | |
2350 | "timed out. Renewing.\n", | |
2351 | lport, vport->localport); | |
2352 | continue; | |
2353 | } | |
2354 | break; | |
2355 | } | |
2356 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, | |
2357 | "6177 Lport %p Localport %p Complete Success\n", | |
2358 | lport, vport->localport); | |
2359 | #endif | |
2360 | } | |
2361 | ||
01649561 JS |
2362 | /** |
2363 | * lpfc_nvme_destroy_localport - Destroy lpfc_nvme bound to nvme transport. | |
2364 | * @pnvme: pointer to lpfc nvme data structure. | |
2365 | * | |
2366 | * This routine is invoked to destroy all lports bound to the phba. | |
2367 | * The lport memory was allocated by the nvme fc transport and is | |
2368 | * released there. This routine ensures all rports bound to the | |
2369 | * lport have been disconnected. | |
2370 | * | |
2371 | **/ | |
2372 | void | |
2373 | lpfc_nvme_destroy_localport(struct lpfc_vport *vport) | |
2374 | { | |
7d708033 | 2375 | #if (IS_ENABLED(CONFIG_NVME_FC)) |
01649561 JS |
2376 | struct nvme_fc_local_port *localport; |
2377 | struct lpfc_nvme_lport *lport; | |
01649561 JS |
2378 | int ret; |
2379 | ||
2380 | if (vport->nvmei_support == 0) | |
2381 | return; | |
2382 | ||
2383 | localport = vport->localport; | |
2384 | vport->localport = NULL; | |
2385 | lport = (struct lpfc_nvme_lport *)localport->private; | |
2386 | ||
2387 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, | |
2388 | "6011 Destroying NVME localport %p\n", | |
2389 | localport); | |
166d7211 | 2390 | |
01649561 JS |
2391 | /* lport's rport list is clear. Unregister |
2392 | * lport and release resources. | |
2393 | */ | |
2394 | init_completion(&lport->lport_unreg_done); | |
2395 | ret = nvme_fc_unregister_localport(localport); | |
add9d6be JS |
2396 | |
2397 | /* Wait for completion. This either blocks | |
2398 | * indefinitely or succeeds | |
2399 | */ | |
2400 | lpfc_nvme_lport_unreg_wait(vport, lport); | |
01649561 JS |
2401 | |
2402 | /* Regardless of the unregister upcall response, clear | |
2403 | * nvmei_support. All rports are unregistered and the | |
2404 | * driver will clean up. | |
2405 | */ | |
2406 | vport->nvmei_support = 0; | |
2407 | if (ret == 0) { | |
2408 | lpfc_printf_vlog(vport, | |
2409 | KERN_INFO, LOG_NVME_DISC, | |
2410 | "6009 Unregistered lport Success\n"); | |
2411 | } else { | |
2412 | lpfc_printf_vlog(vport, | |
2413 | KERN_INFO, LOG_NVME_DISC, | |
2414 | "6010 Unregistered lport " | |
2415 | "Failed, status x%x\n", | |
2416 | ret); | |
2417 | } | |
166d7211 | 2418 | #endif |
01649561 JS |
2419 | } |
2420 | ||
2421 | void | |
2422 | lpfc_nvme_update_localport(struct lpfc_vport *vport) | |
2423 | { | |
4410a67a | 2424 | #if (IS_ENABLED(CONFIG_NVME_FC)) |
01649561 JS |
2425 | struct nvme_fc_local_port *localport; |
2426 | struct lpfc_nvme_lport *lport; | |
2427 | ||
2428 | localport = vport->localport; | |
4410a67a JS |
2429 | if (!localport) { |
2430 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME, | |
2431 | "6710 Update NVME fail. No localport\n"); | |
2432 | return; | |
2433 | } | |
01649561 | 2434 | lport = (struct lpfc_nvme_lport *)localport->private; |
4410a67a JS |
2435 | if (!lport) { |
2436 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME, | |
2437 | "6171 Update NVME fail. localP %p, No lport\n", | |
2438 | localport); | |
2439 | return; | |
2440 | } | |
01649561 JS |
2441 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, |
2442 | "6012 Update NVME lport %p did x%x\n", | |
2443 | localport, vport->fc_myDID); | |
2444 | ||
2445 | localport->port_id = vport->fc_myDID; | |
2446 | if (localport->port_id == 0) | |
2447 | localport->port_role = FC_PORT_ROLE_NVME_DISCOVERY; | |
2448 | else | |
2449 | localport->port_role = FC_PORT_ROLE_NVME_INITIATOR; | |
2450 | ||
2451 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, | |
2452 | "6030 bound lport %p to DID x%06x\n", | |
2453 | lport, localport->port_id); | |
4410a67a | 2454 | #endif |
01649561 JS |
2455 | } |
2456 | ||
2457 | int | |
2458 | lpfc_nvme_register_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) | |
2459 | { | |
7d708033 | 2460 | #if (IS_ENABLED(CONFIG_NVME_FC)) |
01649561 JS |
2461 | int ret = 0; |
2462 | struct nvme_fc_local_port *localport; | |
2463 | struct lpfc_nvme_lport *lport; | |
2464 | struct lpfc_nvme_rport *rport; | |
2465 | struct nvme_fc_remote_port *remote_port; | |
2466 | struct nvme_fc_port_info rpinfo; | |
2b75d0f9 | 2467 | struct lpfc_nodelist *prev_ndlp; |
01649561 JS |
2468 | |
2469 | lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NVME_DISC, | |
2470 | "6006 Register NVME PORT. DID x%06x nlptype x%x\n", | |
2471 | ndlp->nlp_DID, ndlp->nlp_type); | |
2472 | ||
2473 | localport = vport->localport; | |
bb6a8a2c DK |
2474 | if (!localport) |
2475 | return 0; | |
2476 | ||
01649561 JS |
2477 | lport = (struct lpfc_nvme_lport *)localport->private; |
2478 | ||
7a06dcd3 JS |
2479 | /* NVME rports are not preserved across devloss. |
2480 | * Just register this instance. Note, rpinfo->dev_loss_tmo | |
2481 | * is left 0 to indicate accept transport defaults. The | |
2482 | * driver communicates port role capabilities consistent | |
2483 | * with the PRLI response data. | |
2484 | */ | |
2485 | memset(&rpinfo, 0, sizeof(struct nvme_fc_port_info)); | |
2486 | rpinfo.port_id = ndlp->nlp_DID; | |
2487 | if (ndlp->nlp_type & NLP_NVME_TARGET) | |
2488 | rpinfo.port_role |= FC_PORT_ROLE_NVME_TARGET; | |
2489 | if (ndlp->nlp_type & NLP_NVME_INITIATOR) | |
2490 | rpinfo.port_role |= FC_PORT_ROLE_NVME_INITIATOR; | |
2491 | ||
2492 | if (ndlp->nlp_type & NLP_NVME_DISCOVERY) | |
2493 | rpinfo.port_role |= FC_PORT_ROLE_NVME_DISCOVERY; | |
2494 | ||
2495 | rpinfo.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); | |
2496 | rpinfo.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); | |
2497 | ret = nvme_fc_register_remoteport(localport, &rpinfo, &remote_port); | |
2498 | if (!ret) { | |
2499 | /* If the ndlp already has an nrport, this is just | |
2500 | * a resume of the existing rport. Else this is a | |
2501 | * new rport. | |
01649561 | 2502 | */ |
7a06dcd3 | 2503 | rport = remote_port->private; |
2b75d0f9 | 2504 | if (ndlp->nrport) { |
7a06dcd3 JS |
2505 | lpfc_printf_vlog(ndlp->vport, KERN_INFO, |
2506 | LOG_NVME_DISC, | |
2507 | "6014 Rebinding lport to " | |
2508 | "rport wwpn 0x%llx, " | |
2509 | "Data: x%x x%x x%x x%06x\n", | |
2510 | remote_port->port_name, | |
2511 | remote_port->port_id, | |
2512 | remote_port->port_role, | |
01649561 JS |
2513 | ndlp->nlp_type, |
2514 | ndlp->nlp_DID); | |
2b75d0f9 DK |
2515 | prev_ndlp = rport->ndlp; |
2516 | ||
2517 | /* Sever the ndlp<->rport connection before dropping | |
2518 | * the ndlp ref from register. | |
2519 | */ | |
2520 | ndlp->nrport = NULL; | |
2521 | rport->ndlp = NULL; | |
2522 | if (prev_ndlp) | |
2523 | lpfc_nlp_put(ndlp); | |
01649561 | 2524 | } |
2b75d0f9 DK |
2525 | |
2526 | /* Clean bind the rport to the ndlp. */ | |
2527 | rport->remoteport = remote_port; | |
2528 | rport->lport = lport; | |
2529 | rport->ndlp = lpfc_nlp_get(ndlp); | |
2530 | if (!rport->ndlp) | |
2531 | return -1; | |
2532 | ndlp->nrport = rport; | |
2533 | lpfc_printf_vlog(vport, KERN_INFO, | |
2534 | LOG_NVME_DISC | LOG_NODE, | |
2535 | "6022 Binding new rport to " | |
2536 | "lport %p Rport WWNN 0x%llx, " | |
2537 | "Rport WWPN 0x%llx DID " | |
2538 | "x%06x Role x%x\n", | |
2539 | lport, | |
2540 | rpinfo.node_name, rpinfo.port_name, | |
2541 | rpinfo.port_id, rpinfo.port_role); | |
01649561 | 2542 | } else { |
7a06dcd3 JS |
2543 | lpfc_printf_vlog(vport, KERN_ERR, |
2544 | LOG_NVME_DISC | LOG_NODE, | |
2545 | "6031 RemotePort Registration failed " | |
2546 | "err: %d, DID x%06x\n", | |
2547 | ret, ndlp->nlp_DID); | |
01649561 | 2548 | } |
7a06dcd3 | 2549 | |
01649561 | 2550 | return ret; |
166d7211 JS |
2551 | #else |
2552 | return 0; | |
2553 | #endif | |
01649561 JS |
2554 | } |
2555 | ||
add9d6be JS |
2556 | /* lpfc_nvme_rport_unreg_wait - Wait for the host to complete an rport unreg. |
2557 | * | |
2558 | * The driver has to wait for the host nvme transport to callback | |
2559 | * indicating the remoteport has successfully unregistered all | |
2560 | * resources. Since this is an uninterruptible wait, loop every ten | |
2561 | * seconds and print a message indicating no progress. | |
2562 | * | |
2563 | * An uninterruptible wait is used because of the risk of transport-to- | |
2564 | * driver state mismatch. | |
2565 | */ | |
2566 | void | |
2567 | lpfc_nvme_rport_unreg_wait(struct lpfc_vport *vport, | |
2568 | struct lpfc_nvme_rport *rport) | |
2569 | { | |
2570 | #if (IS_ENABLED(CONFIG_NVME_FC)) | |
2571 | u32 wait_tmo; | |
2572 | int ret; | |
2573 | ||
2574 | /* Host transport has to clean up and confirm requiring an indefinite | |
2575 | * wait. Print a message if a 10 second wait expires and renew the | |
2576 | * wait. This is unexpected. | |
2577 | */ | |
2578 | wait_tmo = msecs_to_jiffies(LPFC_NVME_WAIT_TMO * 1000); | |
2579 | while (true) { | |
2580 | ret = wait_for_completion_timeout(&rport->rport_unreg_done, | |
2581 | wait_tmo); | |
2582 | if (unlikely(!ret)) { | |
2583 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, | |
2584 | "6174 Rport %p Remoteport %p wait " | |
2585 | "timed out. Renewing.\n", | |
2586 | rport, rport->remoteport); | |
2587 | continue; | |
2588 | } | |
2589 | break; | |
2590 | } | |
2591 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, | |
2592 | "6175 Rport %p Remoteport %p Complete Success\n", | |
2593 | rport, rport->remoteport); | |
2594 | #endif | |
2595 | } | |
2596 | ||
01649561 JS |
2597 | /* lpfc_nvme_unregister_port - unbind the DID and port_role from this rport. |
2598 | * | |
2599 | * There is no notion of Devloss or rport recovery from the current | |
2600 | * nvme_transport perspective. Loss of an rport just means IO cannot | |
2601 | * be sent and recovery is completely up to the initator. | |
2602 | * For now, the driver just unbinds the DID and port_role so that | |
2603 | * no further IO can be issued. Changes are planned for later. | |
2604 | * | |
2605 | * Notes - the ndlp reference count is not decremented here since | |
2606 | * since there is no nvme_transport api for devloss. Node ref count | |
2607 | * is only adjusted in driver unload. | |
2608 | */ | |
2609 | void | |
2610 | lpfc_nvme_unregister_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) | |
2611 | { | |
7d708033 | 2612 | #if (IS_ENABLED(CONFIG_NVME_FC)) |
01649561 JS |
2613 | int ret; |
2614 | struct nvme_fc_local_port *localport; | |
2615 | struct lpfc_nvme_lport *lport; | |
2616 | struct lpfc_nvme_rport *rport; | |
2617 | struct nvme_fc_remote_port *remoteport; | |
2618 | ||
2619 | localport = vport->localport; | |
2620 | ||
2621 | /* This is fundamental error. The localport is always | |
2622 | * available until driver unload. Just exit. | |
2623 | */ | |
2624 | if (!localport) | |
2625 | return; | |
2626 | ||
2627 | lport = (struct lpfc_nvme_lport *)localport->private; | |
2628 | if (!lport) | |
2629 | goto input_err; | |
2630 | ||
2631 | rport = ndlp->nrport; | |
2632 | if (!rport) | |
2633 | goto input_err; | |
2634 | ||
2635 | remoteport = rport->remoteport; | |
2636 | lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, | |
2637 | "6033 Unreg nvme remoteport %p, portname x%llx, " | |
2638 | "port_id x%06x, portstate x%x port type x%x\n", | |
2639 | remoteport, remoteport->port_name, | |
2640 | remoteport->port_id, remoteport->port_state, | |
2641 | ndlp->nlp_type); | |
2642 | ||
2643 | /* Sanity check ndlp type. Only call for NVME ports. Don't | |
2644 | * clear any rport state until the transport calls back. | |
2645 | */ | |
3b5bde69 JS |
2646 | |
2647 | if (ndlp->nlp_type & NLP_NVME_TARGET) { | |
01649561 | 2648 | init_completion(&rport->rport_unreg_done); |
7a06dcd3 JS |
2649 | |
2650 | /* No concern about the role change on the nvme remoteport. | |
2651 | * The transport will update it. | |
2652 | */ | |
add9d6be | 2653 | ndlp->upcall_flags |= NLP_WAIT_FOR_UNREG; |
01649561 | 2654 | ret = nvme_fc_unregister_remoteport(remoteport); |
add9d6be | 2655 | if (ret != 0) |
01649561 JS |
2656 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, |
2657 | "6167 NVME unregister failed %d " | |
2658 | "port_state x%x\n", | |
2659 | ret, remoteport->port_state); | |
add9d6be JS |
2660 | else |
2661 | /* Wait for completion. This either blocks | |
2662 | * indefinitely or succeeds | |
2663 | */ | |
2664 | lpfc_nvme_rport_unreg_wait(vport, rport); | |
2665 | ndlp->upcall_flags &= ~NLP_WAIT_FOR_UNREG; | |
01649561 JS |
2666 | } |
2667 | return; | |
2668 | ||
2669 | input_err: | |
166d7211 | 2670 | #endif |
01649561 | 2671 | lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, |
2b7824d0 | 2672 | "6168 State error: lport %p, rport%p FCID x%06x\n", |
01649561 JS |
2673 | vport->localport, ndlp->rport, ndlp->nlp_DID); |
2674 | } | |
318083ad JS |
2675 | |
2676 | /** | |
2677 | * lpfc_sli4_nvme_xri_aborted - Fast-path process of NVME xri abort | |
2678 | * @phba: pointer to lpfc hba data structure. | |
2679 | * @axri: pointer to the fcp xri abort wcqe structure. | |
2680 | * | |
2681 | * This routine is invoked by the worker thread to process a SLI4 fast-path | |
952c303b DK |
2682 | * NVME aborted xri. Aborted NVME IO commands are completed to the transport |
2683 | * here. | |
318083ad JS |
2684 | **/ |
2685 | void | |
2686 | lpfc_sli4_nvme_xri_aborted(struct lpfc_hba *phba, | |
2687 | struct sli4_wcqe_xri_aborted *axri) | |
2688 | { | |
2689 | uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); | |
318083ad | 2690 | struct lpfc_nvme_buf *lpfc_ncmd, *next_lpfc_ncmd; |
952c303b | 2691 | struct nvmefc_fcp_req *nvme_cmd = NULL; |
318083ad JS |
2692 | struct lpfc_nodelist *ndlp; |
2693 | unsigned long iflag = 0; | |
318083ad JS |
2694 | |
2695 | if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)) | |
2696 | return; | |
2697 | spin_lock_irqsave(&phba->hbalock, iflag); | |
2698 | spin_lock(&phba->sli4_hba.abts_nvme_buf_list_lock); | |
2699 | list_for_each_entry_safe(lpfc_ncmd, next_lpfc_ncmd, | |
2700 | &phba->sli4_hba.lpfc_abts_nvme_buf_list, | |
2701 | list) { | |
2702 | if (lpfc_ncmd->cur_iocbq.sli4_xritag == xri) { | |
bbe3012b | 2703 | list_del_init(&lpfc_ncmd->list); |
318083ad JS |
2704 | lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY; |
2705 | lpfc_ncmd->status = IOSTAT_SUCCESS; | |
2706 | spin_unlock( | |
2707 | &phba->sli4_hba.abts_nvme_buf_list_lock); | |
2708 | ||
318083ad JS |
2709 | spin_unlock_irqrestore(&phba->hbalock, iflag); |
2710 | ndlp = lpfc_ncmd->ndlp; | |
952c303b | 2711 | if (ndlp) |
318083ad | 2712 | lpfc_sli4_abts_err_handler(phba, ndlp, axri); |
86c67379 JS |
2713 | |
2714 | lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, | |
952c303b DK |
2715 | "6311 nvme_cmd %p xri x%x tag x%x " |
2716 | "abort complete and xri released\n", | |
2717 | lpfc_ncmd->nvmeCmd, xri, | |
2718 | lpfc_ncmd->cur_iocbq.iotag); | |
2719 | ||
2720 | /* Aborted NVME commands are required to not complete | |
2721 | * before the abort exchange command fully completes. | |
2722 | * Once completed, it is available via the put list. | |
2723 | */ | |
2724 | nvme_cmd = lpfc_ncmd->nvmeCmd; | |
2725 | nvme_cmd->done(nvme_cmd); | |
318083ad | 2726 | lpfc_release_nvme_buf(phba, lpfc_ncmd); |
318083ad JS |
2727 | return; |
2728 | } | |
2729 | } | |
2730 | spin_unlock(&phba->sli4_hba.abts_nvme_buf_list_lock); | |
2731 | spin_unlock_irqrestore(&phba->hbalock, iflag); | |
86c67379 JS |
2732 | |
2733 | lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, | |
2734 | "6312 XRI Aborted xri x%x not found\n", xri); | |
2735 | ||
318083ad | 2736 | } |
c3725bdc JS |
2737 | |
2738 | /** | |
2739 | * lpfc_nvme_wait_for_io_drain - Wait for all NVME wqes to complete | |
2740 | * @phba: Pointer to HBA context object. | |
2741 | * | |
2742 | * This function flushes all wqes in the nvme rings and frees all resources | |
2743 | * in the txcmplq. This function does not issue abort wqes for the IO | |
2744 | * commands in txcmplq, they will just be returned with | |
2745 | * IOERR_SLI_DOWN. This function is invoked with EEH when device's PCI | |
2746 | * slot has been permanently disabled. | |
2747 | **/ | |
2748 | void | |
2749 | lpfc_nvme_wait_for_io_drain(struct lpfc_hba *phba) | |
2750 | { | |
2751 | struct lpfc_sli_ring *pring; | |
2752 | u32 i, wait_cnt = 0; | |
2753 | ||
2754 | if (phba->sli_rev < LPFC_SLI_REV4) | |
2755 | return; | |
2756 | ||
2757 | /* Cycle through all NVME rings and make sure all outstanding | |
2758 | * WQEs have been removed from the txcmplqs. | |
2759 | */ | |
2760 | for (i = 0; i < phba->cfg_nvme_io_channel; i++) { | |
2761 | pring = phba->sli4_hba.nvme_wq[i]->pring; | |
2762 | ||
2763 | /* Retrieve everything on the txcmplq */ | |
2764 | while (!list_empty(&pring->txcmplq)) { | |
2765 | msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1); | |
2766 | wait_cnt++; | |
2767 | ||
2768 | /* The sleep is 10mS. Every ten seconds, | |
2769 | * dump a message. Something is wrong. | |
2770 | */ | |
2771 | if ((wait_cnt % 1000) == 0) { | |
2772 | lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, | |
2773 | "6178 NVME IO not empty, " | |
2774 | "cnt %d\n", wait_cnt); | |
2775 | } | |
2776 | } | |
2777 | } | |
2778 | } |