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mfd: Make WM8400 depend on I2C until SPI is submitted
[linux-2.6.git] / drivers / scsi / lpfc / lpfc_init.c
blob909be3301bba7d74b824319397aae90a14593566
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2008 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
6 * www.emulex.com *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
8 * *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
20 *******************************************************************/
21
22 #include <linux/blkdev.h>
23 #include <linux/delay.h>
24 #include <linux/dma-mapping.h>
25 #include <linux/idr.h>
26 #include <linux/interrupt.h>
27 #include <linux/kthread.h>
28 #include <linux/pci.h>
29 #include <linux/spinlock.h>
30 #include <linux/ctype.h>
31
32 #include <scsi/scsi.h>
33 #include <scsi/scsi_device.h>
34 #include <scsi/scsi_host.h>
35 #include <scsi/scsi_transport_fc.h>
36
37 #include "lpfc_hw.h"
38 #include "lpfc_sli.h"
39 #include "lpfc_nl.h"
40 #include "lpfc_disc.h"
41 #include "lpfc_scsi.h"
42 #include "lpfc.h"
43 #include "lpfc_logmsg.h"
44 #include "lpfc_crtn.h"
45 #include "lpfc_vport.h"
46 #include "lpfc_version.h"
47
48 static int lpfc_parse_vpd(struct lpfc_hba *, uint8_t *, int);
49 static void lpfc_get_hba_model_desc(struct lpfc_hba *, uint8_t *, uint8_t *);
50 static int lpfc_post_rcv_buf(struct lpfc_hba *);
51
52 static struct scsi_transport_template *lpfc_transport_template = NULL;
53 static struct scsi_transport_template *lpfc_vport_transport_template = NULL;
54 static DEFINE_IDR(lpfc_hba_index);
55
56 /**
57 * lpfc_config_port_prep: Perform lpfc initialization prior to config port.
58 * @phba: pointer to lpfc hba data structure.
59 *
60 * This routine will do LPFC initialization prior to issuing the CONFIG_PORT
61 * mailbox command. It retrieves the revision information from the HBA and
62 * collects the Vital Product Data (VPD) about the HBA for preparing the
63 * configuration of the HBA.
64 *
65 * Return codes:
66 * 0 - success.
67 * -ERESTART - requests the SLI layer to reset the HBA and try again.
68 * Any other value - indicates an error.
69 **/
70 int
71 lpfc_config_port_prep(struct lpfc_hba *phba)
72 {
73 lpfc_vpd_t *vp = &phba->vpd;
74 int i = 0, rc;
75 LPFC_MBOXQ_t *pmb;
76 MAILBOX_t *mb;
77 char *lpfc_vpd_data = NULL;
78 uint16_t offset = 0;
79 static char licensed[56] =
80 "key unlock for use with gnu public licensed code only\0";
81 static int init_key = 1;
82
83 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
84 if (!pmb) {
85 phba->link_state = LPFC_HBA_ERROR;
86 return -ENOMEM;
87 }
88
89 mb = &pmb->mb;
90 phba->link_state = LPFC_INIT_MBX_CMDS;
91
92 if (lpfc_is_LC_HBA(phba->pcidev->device)) {
93 if (init_key) {
94 uint32_t *ptext = (uint32_t *) licensed;
95
96 for (i = 0; i < 56; i += sizeof (uint32_t), ptext++)
97 *ptext = cpu_to_be32(*ptext);
98 init_key = 0;
99 }
100
101 lpfc_read_nv(phba, pmb);
102 memset((char*)mb->un.varRDnvp.rsvd3, 0,
103 sizeof (mb->un.varRDnvp.rsvd3));
104 memcpy((char*)mb->un.varRDnvp.rsvd3, licensed,
105 sizeof (licensed));
106
107 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
108
109 if (rc != MBX_SUCCESS) {
110 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
111 "0324 Config Port initialization "
112 "error, mbxCmd x%x READ_NVPARM, "
113 "mbxStatus x%x\n",
114 mb->mbxCommand, mb->mbxStatus);
115 mempool_free(pmb, phba->mbox_mem_pool);
116 return -ERESTART;
117 }
118 memcpy(phba->wwnn, (char *)mb->un.varRDnvp.nodename,
119 sizeof(phba->wwnn));
120 memcpy(phba->wwpn, (char *)mb->un.varRDnvp.portname,
121 sizeof(phba->wwpn));
122 }
123
124 phba->sli3_options = 0x0;
125
126 /* Setup and issue mailbox READ REV command */
127 lpfc_read_rev(phba, pmb);
128 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
129 if (rc != MBX_SUCCESS) {
130 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
131 "0439 Adapter failed to init, mbxCmd x%x "
132 "READ_REV, mbxStatus x%x\n",
133 mb->mbxCommand, mb->mbxStatus);
134 mempool_free( pmb, phba->mbox_mem_pool);
135 return -ERESTART;
136 }
137
138
139 /*
140 * The value of rr must be 1 since the driver set the cv field to 1.
141 * This setting requires the FW to set all revision fields.
142 */
143 if (mb->un.varRdRev.rr == 0) {
144 vp->rev.rBit = 0;
145 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
146 "0440 Adapter failed to init, READ_REV has "
147 "missing revision information.\n");
148 mempool_free(pmb, phba->mbox_mem_pool);
149 return -ERESTART;
150 }
151
152 if (phba->sli_rev == 3 && !mb->un.varRdRev.v3rsp) {
153 mempool_free(pmb, phba->mbox_mem_pool);
154 return -EINVAL;
155 }
156
157 /* Save information as VPD data */
158 vp->rev.rBit = 1;
159 memcpy(&vp->sli3Feat, &mb->un.varRdRev.sli3Feat, sizeof(uint32_t));
160 vp->rev.sli1FwRev = mb->un.varRdRev.sli1FwRev;
161 memcpy(vp->rev.sli1FwName, (char*) mb->un.varRdRev.sli1FwName, 16);
162 vp->rev.sli2FwRev = mb->un.varRdRev.sli2FwRev;
163 memcpy(vp->rev.sli2FwName, (char *) mb->un.varRdRev.sli2FwName, 16);
164 vp->rev.biuRev = mb->un.varRdRev.biuRev;
165 vp->rev.smRev = mb->un.varRdRev.smRev;
166 vp->rev.smFwRev = mb->un.varRdRev.un.smFwRev;
167 vp->rev.endecRev = mb->un.varRdRev.endecRev;
168 vp->rev.fcphHigh = mb->un.varRdRev.fcphHigh;
169 vp->rev.fcphLow = mb->un.varRdRev.fcphLow;
170 vp->rev.feaLevelHigh = mb->un.varRdRev.feaLevelHigh;
171 vp->rev.feaLevelLow = mb->un.varRdRev.feaLevelLow;
172 vp->rev.postKernRev = mb->un.varRdRev.postKernRev;
173 vp->rev.opFwRev = mb->un.varRdRev.opFwRev;
174
175 /* If the sli feature level is less then 9, we must
176 * tear down all RPIs and VPIs on link down if NPIV
177 * is enabled.
178 */
179 if (vp->rev.feaLevelHigh < 9)
180 phba->sli3_options |= LPFC_SLI3_VPORT_TEARDOWN;
181
182 if (lpfc_is_LC_HBA(phba->pcidev->device))
183 memcpy(phba->RandomData, (char *)&mb->un.varWords[24],
184 sizeof (phba->RandomData));
185
186 /* Get adapter VPD information */
187 lpfc_vpd_data = kmalloc(DMP_VPD_SIZE, GFP_KERNEL);
188 if (!lpfc_vpd_data)
189 goto out_free_mbox;
190
191 do {
192 lpfc_dump_mem(phba, pmb, offset);
193 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
194
195 if (rc != MBX_SUCCESS) {
196 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
197 "0441 VPD not present on adapter, "
198 "mbxCmd x%x DUMP VPD, mbxStatus x%x\n",
199 mb->mbxCommand, mb->mbxStatus);
200 mb->un.varDmp.word_cnt = 0;
201 }
202 if (mb->un.varDmp.word_cnt > DMP_VPD_SIZE - offset)
203 mb->un.varDmp.word_cnt = DMP_VPD_SIZE - offset;
204 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
205 lpfc_vpd_data + offset,
206 mb->un.varDmp.word_cnt);
207 offset += mb->un.varDmp.word_cnt;
208 } while (mb->un.varDmp.word_cnt && offset < DMP_VPD_SIZE);
209 lpfc_parse_vpd(phba, lpfc_vpd_data, offset);
210
211 kfree(lpfc_vpd_data);
212 out_free_mbox:
213 mempool_free(pmb, phba->mbox_mem_pool);
214 return 0;
215 }
216
217 /**
218 * lpfc_config_async_cmpl: Completion handler for config async event mbox cmd.
219 * @phba: pointer to lpfc hba data structure.
220 * @pmboxq: pointer to the driver internal queue element for mailbox command.
221 *
222 * This is the completion handler for driver's configuring asynchronous event
223 * mailbox command to the device. If the mailbox command returns successfully,
224 * it will set internal async event support flag to 1; otherwise, it will
225 * set internal async event support flag to 0.
226 **/
227 static void
228 lpfc_config_async_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
229 {
230 if (pmboxq->mb.mbxStatus == MBX_SUCCESS)
231 phba->temp_sensor_support = 1;
232 else
233 phba->temp_sensor_support = 0;
234 mempool_free(pmboxq, phba->mbox_mem_pool);
235 return;
236 }
237
238 /**
239 * lpfc_config_port_post: Perform lpfc initialization after config port.
240 * @phba: pointer to lpfc hba data structure.
241 *
242 * This routine will do LPFC initialization after the CONFIG_PORT mailbox
243 * command call. It performs all internal resource and state setups on the
244 * port: post IOCB buffers, enable appropriate host interrupt attentions,
245 * ELS ring timers, etc.
246 *
247 * Return codes
248 * 0 - success.
249 * Any other value - error.
250 **/
251 int
252 lpfc_config_port_post(struct lpfc_hba *phba)
253 {
254 struct lpfc_vport *vport = phba->pport;
255 LPFC_MBOXQ_t *pmb;
256 MAILBOX_t *mb;
257 struct lpfc_dmabuf *mp;
258 struct lpfc_sli *psli = &phba->sli;
259 uint32_t status, timeout;
260 int i, j;
261 int rc;
262
263 spin_lock_irq(&phba->hbalock);
264 /*
265 * If the Config port completed correctly the HBA is not
266 * over heated any more.
267 */
268 if (phba->over_temp_state == HBA_OVER_TEMP)
269 phba->over_temp_state = HBA_NORMAL_TEMP;
270 spin_unlock_irq(&phba->hbalock);
271
272 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
273 if (!pmb) {
274 phba->link_state = LPFC_HBA_ERROR;
275 return -ENOMEM;
276 }
277 mb = &pmb->mb;
278
279 /* Get login parameters for NID. */
280 lpfc_read_sparam(phba, pmb, 0);
281 pmb->vport = vport;
282 if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
283 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
284 "0448 Adapter failed init, mbxCmd x%x "
285 "READ_SPARM mbxStatus x%x\n",
286 mb->mbxCommand, mb->mbxStatus);
287 phba->link_state = LPFC_HBA_ERROR;
288 mp = (struct lpfc_dmabuf *) pmb->context1;
289 mempool_free( pmb, phba->mbox_mem_pool);
290 lpfc_mbuf_free(phba, mp->virt, mp->phys);
291 kfree(mp);
292 return -EIO;
293 }
294
295 mp = (struct lpfc_dmabuf *) pmb->context1;
296
297 memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
298 lpfc_mbuf_free(phba, mp->virt, mp->phys);
299 kfree(mp);
300 pmb->context1 = NULL;
301
302 if (phba->cfg_soft_wwnn)
303 u64_to_wwn(phba->cfg_soft_wwnn,
304 vport->fc_sparam.nodeName.u.wwn);
305 if (phba->cfg_soft_wwpn)
306 u64_to_wwn(phba->cfg_soft_wwpn,
307 vport->fc_sparam.portName.u.wwn);
308 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
309 sizeof (struct lpfc_name));
310 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
311 sizeof (struct lpfc_name));
312 /* If no serial number in VPD data, use low 6 bytes of WWNN */
313 /* This should be consolidated into parse_vpd ? - mr */
314 if (phba->SerialNumber[0] == 0) {
315 uint8_t *outptr;
316
317 outptr = &vport->fc_nodename.u.s.IEEE[0];
318 for (i = 0; i < 12; i++) {
319 status = *outptr++;
320 j = ((status & 0xf0) >> 4);
321 if (j <= 9)
322 phba->SerialNumber[i] =
323 (char)((uint8_t) 0x30 + (uint8_t) j);
324 else
325 phba->SerialNumber[i] =
326 (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
327 i++;
328 j = (status & 0xf);
329 if (j <= 9)
330 phba->SerialNumber[i] =
331 (char)((uint8_t) 0x30 + (uint8_t) j);
332 else
333 phba->SerialNumber[i] =
334 (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
335 }
336 }
337
338 lpfc_read_config(phba, pmb);
339 pmb->vport = vport;
340 if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
341 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
342 "0453 Adapter failed to init, mbxCmd x%x "
343 "READ_CONFIG, mbxStatus x%x\n",
344 mb->mbxCommand, mb->mbxStatus);
345 phba->link_state = LPFC_HBA_ERROR;
346 mempool_free( pmb, phba->mbox_mem_pool);
347 return -EIO;
348 }
349
350 /* Reset the DFT_HBA_Q_DEPTH to the max xri */
351 if (phba->cfg_hba_queue_depth > (mb->un.varRdConfig.max_xri+1))
352 phba->cfg_hba_queue_depth =
353 mb->un.varRdConfig.max_xri + 1;
354
355 phba->lmt = mb->un.varRdConfig.lmt;
356
357 /* Get the default values for Model Name and Description */
358 lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
359
360 if ((phba->cfg_link_speed > LINK_SPEED_10G)
361 || ((phba->cfg_link_speed == LINK_SPEED_1G)
362 && !(phba->lmt & LMT_1Gb))
363 || ((phba->cfg_link_speed == LINK_SPEED_2G)
364 && !(phba->lmt & LMT_2Gb))
365 || ((phba->cfg_link_speed == LINK_SPEED_4G)
366 && !(phba->lmt & LMT_4Gb))
367 || ((phba->cfg_link_speed == LINK_SPEED_8G)
368 && !(phba->lmt & LMT_8Gb))
369 || ((phba->cfg_link_speed == LINK_SPEED_10G)
370 && !(phba->lmt & LMT_10Gb))) {
371 /* Reset link speed to auto */
372 lpfc_printf_log(phba, KERN_WARNING, LOG_LINK_EVENT,
373 "1302 Invalid speed for this board: "
374 "Reset link speed to auto: x%x\n",
375 phba->cfg_link_speed);
376 phba->cfg_link_speed = LINK_SPEED_AUTO;
377 }
378
379 phba->link_state = LPFC_LINK_DOWN;
380
381 /* Only process IOCBs on ELS ring till hba_state is READY */
382 if (psli->ring[psli->extra_ring].cmdringaddr)
383 psli->ring[psli->extra_ring].flag |= LPFC_STOP_IOCB_EVENT;
384 if (psli->ring[psli->fcp_ring].cmdringaddr)
385 psli->ring[psli->fcp_ring].flag |= LPFC_STOP_IOCB_EVENT;
386 if (psli->ring[psli->next_ring].cmdringaddr)
387 psli->ring[psli->next_ring].flag |= LPFC_STOP_IOCB_EVENT;
388
389 /* Post receive buffers for desired rings */
390 if (phba->sli_rev != 3)
391 lpfc_post_rcv_buf(phba);
392
393 /*
394 * Configure HBA MSI-X attention conditions to messages if MSI-X mode
395 */
396 if (phba->intr_type == MSIX) {
397 rc = lpfc_config_msi(phba, pmb);
398 if (rc) {
399 mempool_free(pmb, phba->mbox_mem_pool);
400 return -EIO;
401 }
402 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
403 if (rc != MBX_SUCCESS) {
404 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
405 "0352 Config MSI mailbox command "
406 "failed, mbxCmd x%x, mbxStatus x%x\n",
407 pmb->mb.mbxCommand, pmb->mb.mbxStatus);
408 mempool_free(pmb, phba->mbox_mem_pool);
409 return -EIO;
410 }
411 }
412
413 /* Initialize ERATT handling flag */
414 phba->hba_flag &= ~HBA_ERATT_HANDLED;
415
416 /* Enable appropriate host interrupts */
417 spin_lock_irq(&phba->hbalock);
418 status = readl(phba->HCregaddr);
419 status |= HC_MBINT_ENA | HC_ERINT_ENA | HC_LAINT_ENA;
420 if (psli->num_rings > 0)
421 status |= HC_R0INT_ENA;
422 if (psli->num_rings > 1)
423 status |= HC_R1INT_ENA;
424 if (psli->num_rings > 2)
425 status |= HC_R2INT_ENA;
426 if (psli->num_rings > 3)
427 status |= HC_R3INT_ENA;
428
429 if ((phba->cfg_poll & ENABLE_FCP_RING_POLLING) &&
430 (phba->cfg_poll & DISABLE_FCP_RING_INT))
431 status &= ~(HC_R0INT_ENA);
432
433 writel(status, phba->HCregaddr);
434 readl(phba->HCregaddr); /* flush */
435 spin_unlock_irq(&phba->hbalock);
436
437 /* Set up ring-0 (ELS) timer */
438 timeout = phba->fc_ratov * 2;
439 mod_timer(&vport->els_tmofunc, jiffies + HZ * timeout);
440 /* Set up heart beat (HB) timer */
441 mod_timer(&phba->hb_tmofunc, jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
442 phba->hb_outstanding = 0;
443 phba->last_completion_time = jiffies;
444 /* Set up error attention (ERATT) polling timer */
445 mod_timer(&phba->eratt_poll, jiffies + HZ * LPFC_ERATT_POLL_INTERVAL);
446
447 lpfc_init_link(phba, pmb, phba->cfg_topology, phba->cfg_link_speed);
448 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
449 lpfc_set_loopback_flag(phba);
450 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
451 if (rc != MBX_SUCCESS) {
452 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
453 "0454 Adapter failed to init, mbxCmd x%x "
454 "INIT_LINK, mbxStatus x%x\n",
455 mb->mbxCommand, mb->mbxStatus);
456
457 /* Clear all interrupt enable conditions */
458 writel(0, phba->HCregaddr);
459 readl(phba->HCregaddr); /* flush */
460 /* Clear all pending interrupts */
461 writel(0xffffffff, phba->HAregaddr);
462 readl(phba->HAregaddr); /* flush */
463
464 phba->link_state = LPFC_HBA_ERROR;
465 if (rc != MBX_BUSY)
466 mempool_free(pmb, phba->mbox_mem_pool);
467 return -EIO;
468 }
469 /* MBOX buffer will be freed in mbox compl */
470 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
471 lpfc_config_async(phba, pmb, LPFC_ELS_RING);
472 pmb->mbox_cmpl = lpfc_config_async_cmpl;
473 pmb->vport = phba->pport;
474 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
475
476 if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
477 lpfc_printf_log(phba,
478 KERN_ERR,
479 LOG_INIT,
480 "0456 Adapter failed to issue "
481 "ASYNCEVT_ENABLE mbox status x%x \n.",
482 rc);
483 mempool_free(pmb, phba->mbox_mem_pool);
484 }
485 return 0;
486 }
487
488 /**
489 * lpfc_hba_down_prep: Perform lpfc uninitialization prior to HBA reset.
490 * @phba: pointer to lpfc HBA data structure.
491 *
492 * This routine will do LPFC uninitialization before the HBA is reset when
493 * bringing down the SLI Layer.
494 *
495 * Return codes
496 * 0 - success.
497 * Any other value - error.
498 **/
499 int
500 lpfc_hba_down_prep(struct lpfc_hba *phba)
501 {
502 struct lpfc_vport **vports;
503 int i;
504 /* Disable interrupts */
505 writel(0, phba->HCregaddr);
506 readl(phba->HCregaddr); /* flush */
507
508 if (phba->pport->load_flag & FC_UNLOADING)
509 lpfc_cleanup_discovery_resources(phba->pport);
510 else {
511 vports = lpfc_create_vport_work_array(phba);
512 if (vports != NULL)
513 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++)
514 lpfc_cleanup_discovery_resources(vports[i]);
515 lpfc_destroy_vport_work_array(phba, vports);
516 }
517 return 0;
518 }
519
520 /**
521 * lpfc_hba_down_post: Perform lpfc uninitialization after HBA reset.
522 * @phba: pointer to lpfc HBA data structure.
523 *
524 * This routine will do uninitialization after the HBA is reset when bring
525 * down the SLI Layer.
526 *
527 * Return codes
528 * 0 - sucess.
529 * Any other value - error.
530 **/
531 int
532 lpfc_hba_down_post(struct lpfc_hba *phba)
533 {
534 struct lpfc_sli *psli = &phba->sli;
535 struct lpfc_sli_ring *pring;
536 struct lpfc_dmabuf *mp, *next_mp;
537 struct lpfc_iocbq *iocb;
538 IOCB_t *cmd = NULL;
539 LIST_HEAD(completions);
540 int i;
541
542 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
543 lpfc_sli_hbqbuf_free_all(phba);
544 else {
545 /* Cleanup preposted buffers on the ELS ring */
546 pring = &psli->ring[LPFC_ELS_RING];
547 list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
548 list_del(&mp->list);
549 pring->postbufq_cnt--;
550 lpfc_mbuf_free(phba, mp->virt, mp->phys);
551 kfree(mp);
552 }
553 }
554
555 spin_lock_irq(&phba->hbalock);
556 for (i = 0; i < psli->num_rings; i++) {
557 pring = &psli->ring[i];
558
559 /* At this point in time the HBA is either reset or DOA. Either
560 * way, nothing should be on txcmplq as it will NEVER complete.
561 */
562 list_splice_init(&pring->txcmplq, &completions);
563 pring->txcmplq_cnt = 0;
564 spin_unlock_irq(&phba->hbalock);
565
566 while (!list_empty(&completions)) {
567 iocb = list_get_first(&completions, struct lpfc_iocbq,
568 list);
569 cmd = &iocb->iocb;
570 list_del_init(&iocb->list);
571
572 if (!iocb->iocb_cmpl)
573 lpfc_sli_release_iocbq(phba, iocb);
574 else {
575 cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
576 cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
577 (iocb->iocb_cmpl) (phba, iocb, iocb);
578 }
579 }
580
581 lpfc_sli_abort_iocb_ring(phba, pring);
582 spin_lock_irq(&phba->hbalock);
583 }
584 spin_unlock_irq(&phba->hbalock);
585
586 return 0;
587 }
588
589 /**
590 * lpfc_hb_timeout: The HBA-timer timeout handler.
591 * @ptr: unsigned long holds the pointer to lpfc hba data structure.
592 *
593 * This is the HBA-timer timeout handler registered to the lpfc driver. When
594 * this timer fires, a HBA timeout event shall be posted to the lpfc driver
595 * work-port-events bitmap and the worker thread is notified. This timeout
596 * event will be used by the worker thread to invoke the actual timeout
597 * handler routine, lpfc_hb_timeout_handler. Any periodical operations will
598 * be performed in the timeout handler and the HBA timeout event bit shall
599 * be cleared by the worker thread after it has taken the event bitmap out.
600 **/
601 static void
602 lpfc_hb_timeout(unsigned long ptr)
603 {
604 struct lpfc_hba *phba;
605 uint32_t tmo_posted;
606 unsigned long iflag;
607
608 phba = (struct lpfc_hba *)ptr;
609
610 /* Check for heart beat timeout conditions */
611 spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
612 tmo_posted = phba->pport->work_port_events & WORKER_HB_TMO;
613 if (!tmo_posted)
614 phba->pport->work_port_events |= WORKER_HB_TMO;
615 spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
616
617 /* Tell the worker thread there is work to do */
618 if (!tmo_posted)
619 lpfc_worker_wake_up(phba);
620 return;
621 }
622
623 /**
624 * lpfc_hb_mbox_cmpl: The lpfc heart-beat mailbox command callback function.
625 * @phba: pointer to lpfc hba data structure.
626 * @pmboxq: pointer to the driver internal queue element for mailbox command.
627 *
628 * This is the callback function to the lpfc heart-beat mailbox command.
629 * If configured, the lpfc driver issues the heart-beat mailbox command to
630 * the HBA every LPFC_HB_MBOX_INTERVAL (current 5) seconds. At the time the
631 * heart-beat mailbox command is issued, the driver shall set up heart-beat
632 * timeout timer to LPFC_HB_MBOX_TIMEOUT (current 30) seconds and marks
633 * heart-beat outstanding state. Once the mailbox command comes back and
634 * no error conditions detected, the heart-beat mailbox command timer is
635 * reset to LPFC_HB_MBOX_INTERVAL seconds and the heart-beat outstanding
636 * state is cleared for the next heart-beat. If the timer expired with the
637 * heart-beat outstanding state set, the driver will put the HBA offline.
638 **/
639 static void
640 lpfc_hb_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
641 {
642 unsigned long drvr_flag;
643
644 spin_lock_irqsave(&phba->hbalock, drvr_flag);
645 phba->hb_outstanding = 0;
646 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
647
648 /* Check and reset heart-beat timer is necessary */
649 mempool_free(pmboxq, phba->mbox_mem_pool);
650 if (!(phba->pport->fc_flag & FC_OFFLINE_MODE) &&
651 !(phba->link_state == LPFC_HBA_ERROR) &&
652 !(phba->pport->load_flag & FC_UNLOADING))
653 mod_timer(&phba->hb_tmofunc,
654 jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
655 return;
656 }
657
658 /**
659 * lpfc_hb_timeout_handler: The HBA-timer timeout handler.
660 * @phba: pointer to lpfc hba data structure.
661 *
662 * This is the actual HBA-timer timeout handler to be invoked by the worker
663 * thread whenever the HBA timer fired and HBA-timeout event posted. This
664 * handler performs any periodic operations needed for the device. If such
665 * periodic event has already been attended to either in the interrupt handler
666 * or by processing slow-ring or fast-ring events within the HBA-timer
667 * timeout window (LPFC_HB_MBOX_INTERVAL), this handler just simply resets
668 * the timer for the next timeout period. If lpfc heart-beat mailbox command
669 * is configured and there is no heart-beat mailbox command outstanding, a
670 * heart-beat mailbox is issued and timer set properly. Otherwise, if there
671 * has been a heart-beat mailbox command outstanding, the HBA shall be put
672 * to offline.
673 **/
674 void
675 lpfc_hb_timeout_handler(struct lpfc_hba *phba)
676 {
677 LPFC_MBOXQ_t *pmboxq;
678 struct lpfc_dmabuf *buf_ptr;
679 int retval;
680 struct lpfc_sli *psli = &phba->sli;
681 LIST_HEAD(completions);
682
683 if ((phba->link_state == LPFC_HBA_ERROR) ||
684 (phba->pport->load_flag & FC_UNLOADING) ||
685 (phba->pport->fc_flag & FC_OFFLINE_MODE))
686 return;
687
688 spin_lock_irq(&phba->pport->work_port_lock);
689 /* If the timer is already canceled do nothing */
690 if (!(phba->pport->work_port_events & WORKER_HB_TMO)) {
691 spin_unlock_irq(&phba->pport->work_port_lock);
692 return;
693 }
694
695 if (time_after(phba->last_completion_time + LPFC_HB_MBOX_INTERVAL * HZ,
696 jiffies)) {
697 spin_unlock_irq(&phba->pport->work_port_lock);
698 if (!phba->hb_outstanding)
699 mod_timer(&phba->hb_tmofunc,
700 jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
701 else
702 mod_timer(&phba->hb_tmofunc,
703 jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
704 return;
705 }
706 spin_unlock_irq(&phba->pport->work_port_lock);
707
708 if (phba->elsbuf_cnt &&
709 (phba->elsbuf_cnt == phba->elsbuf_prev_cnt)) {
710 spin_lock_irq(&phba->hbalock);
711 list_splice_init(&phba->elsbuf, &completions);
712 phba->elsbuf_cnt = 0;
713 phba->elsbuf_prev_cnt = 0;
714 spin_unlock_irq(&phba->hbalock);
715
716 while (!list_empty(&completions)) {
717 list_remove_head(&completions, buf_ptr,
718 struct lpfc_dmabuf, list);
719 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
720 kfree(buf_ptr);
721 }
722 }
723 phba->elsbuf_prev_cnt = phba->elsbuf_cnt;
724
725 /* If there is no heart beat outstanding, issue a heartbeat command */
726 if (phba->cfg_enable_hba_heartbeat) {
727 if (!phba->hb_outstanding) {
728 pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL);
729 if (!pmboxq) {
730 mod_timer(&phba->hb_tmofunc,
731 jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
732 return;
733 }
734
735 lpfc_heart_beat(phba, pmboxq);
736 pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl;
737 pmboxq->vport = phba->pport;
738 retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
739
740 if (retval != MBX_BUSY && retval != MBX_SUCCESS) {
741 mempool_free(pmboxq, phba->mbox_mem_pool);
742 mod_timer(&phba->hb_tmofunc,
743 jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
744 return;
745 }
746 mod_timer(&phba->hb_tmofunc,
747 jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
748 phba->hb_outstanding = 1;
749 return;
750 } else {
751 /*
752 * If heart beat timeout called with hb_outstanding set
753 * we need to take the HBA offline.
754 */
755 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
756 "0459 Adapter heartbeat failure, "
757 "taking this port offline.\n");
758
759 spin_lock_irq(&phba->hbalock);
760 psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
761 spin_unlock_irq(&phba->hbalock);
762
763 lpfc_offline_prep(phba);
764 lpfc_offline(phba);
765 lpfc_unblock_mgmt_io(phba);
766 phba->link_state = LPFC_HBA_ERROR;
767 lpfc_hba_down_post(phba);
768 }
769 }
770 }
771
772 /**
773 * lpfc_offline_eratt: Bring lpfc offline on hardware error attention.
774 * @phba: pointer to lpfc hba data structure.
775 *
776 * This routine is called to bring the HBA offline when HBA hardware error
777 * other than Port Error 6 has been detected.
778 **/
779 static void
780 lpfc_offline_eratt(struct lpfc_hba *phba)
781 {
782 struct lpfc_sli *psli = &phba->sli;
783
784 spin_lock_irq(&phba->hbalock);
785 psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
786 spin_unlock_irq(&phba->hbalock);
787 lpfc_offline_prep(phba);
788
789 lpfc_offline(phba);
790 lpfc_reset_barrier(phba);
791 lpfc_sli_brdreset(phba);
792 lpfc_hba_down_post(phba);
793 lpfc_sli_brdready(phba, HS_MBRDY);
794 lpfc_unblock_mgmt_io(phba);
795 phba->link_state = LPFC_HBA_ERROR;
796 return;
797 }
798
799 /**
800 * lpfc_handle_eratt: The HBA hardware error handler.
801 * @phba: pointer to lpfc hba data structure.
802 *
803 * This routine is invoked to handle the following HBA hardware error
804 * conditions:
805 * 1 - HBA error attention interrupt
806 * 2 - DMA ring index out of range
807 * 3 - Mailbox command came back as unknown
808 **/
809 void
810 lpfc_handle_eratt(struct lpfc_hba *phba)
811 {
812 struct lpfc_vport *vport = phba->pport;
813 struct lpfc_sli *psli = &phba->sli;
814 struct lpfc_sli_ring *pring;
815 uint32_t event_data;
816 unsigned long temperature;
817 struct temp_event temp_event_data;
818 struct Scsi_Host *shost;
819 struct lpfc_board_event_header board_event;
820
821 /* If the pci channel is offline, ignore possible errors,
822 * since we cannot communicate with the pci card anyway. */
823 if (pci_channel_offline(phba->pcidev))
824 return;
825 /* If resets are disabled then leave the HBA alone and return */
826 if (!phba->cfg_enable_hba_reset)
827 return;
828
829 /* Send an internal error event to mgmt application */
830 board_event.event_type = FC_REG_BOARD_EVENT;
831 board_event.subcategory = LPFC_EVENT_PORTINTERR;
832 shost = lpfc_shost_from_vport(phba->pport);
833 fc_host_post_vendor_event(shost, fc_get_event_number(),
834 sizeof(board_event),
835 (char *) &board_event,
836 SCSI_NL_VID_TYPE_PCI
837 | PCI_VENDOR_ID_EMULEX);
838
839 if (phba->work_hs & HS_FFER6) {
840 /* Re-establishing Link */
841 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
842 "1301 Re-establishing Link "
843 "Data: x%x x%x x%x\n",
844 phba->work_hs,
845 phba->work_status[0], phba->work_status[1]);
846
847 spin_lock_irq(&phba->hbalock);
848 psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
849 spin_unlock_irq(&phba->hbalock);
850
851 /*
852 * Firmware stops when it triggled erratt with HS_FFER6.
853 * That could cause the I/Os dropped by the firmware.
854 * Error iocb (I/O) on txcmplq and let the SCSI layer
855 * retry it after re-establishing link.
856 */
857 pring = &psli->ring[psli->fcp_ring];
858 lpfc_sli_abort_iocb_ring(phba, pring);
859
860 /*
861 * There was a firmware error. Take the hba offline and then
862 * attempt to restart it.
863 */
864 lpfc_offline_prep(phba);
865 lpfc_offline(phba);
866 lpfc_sli_brdrestart(phba);
867 if (lpfc_online(phba) == 0) { /* Initialize the HBA */
868 lpfc_unblock_mgmt_io(phba);
869 return;
870 }
871 lpfc_unblock_mgmt_io(phba);
872 } else if (phba->work_hs & HS_CRIT_TEMP) {
873 temperature = readl(phba->MBslimaddr + TEMPERATURE_OFFSET);
874 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
875 temp_event_data.event_code = LPFC_CRIT_TEMP;
876 temp_event_data.data = (uint32_t)temperature;
877
878 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
879 "0406 Adapter maximum temperature exceeded "
880 "(%ld), taking this port offline "
881 "Data: x%x x%x x%x\n",
882 temperature, phba->work_hs,
883 phba->work_status[0], phba->work_status[1]);
884
885 shost = lpfc_shost_from_vport(phba->pport);
886 fc_host_post_vendor_event(shost, fc_get_event_number(),
887 sizeof(temp_event_data),
888 (char *) &temp_event_data,
889 SCSI_NL_VID_TYPE_PCI
890 | PCI_VENDOR_ID_EMULEX);
891
892 spin_lock_irq(&phba->hbalock);
893 phba->over_temp_state = HBA_OVER_TEMP;
894 spin_unlock_irq(&phba->hbalock);
895 lpfc_offline_eratt(phba);
896
897 } else {
898 /* The if clause above forces this code path when the status
899 * failure is a value other than FFER6. Do not call the offline
900 * twice. This is the adapter hardware error path.
901 */
902 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
903 "0457 Adapter Hardware Error "
904 "Data: x%x x%x x%x\n",
905 phba->work_hs,
906 phba->work_status[0], phba->work_status[1]);
907
908 event_data = FC_REG_DUMP_EVENT;
909 shost = lpfc_shost_from_vport(vport);
910 fc_host_post_vendor_event(shost, fc_get_event_number(),
911 sizeof(event_data), (char *) &event_data,
912 SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
913
914 lpfc_offline_eratt(phba);
915 }
916 return;
917 }
918
919 /**
920 * lpfc_handle_latt: The HBA link event handler.
921 * @phba: pointer to lpfc hba data structure.
922 *
923 * This routine is invoked from the worker thread to handle a HBA host
924 * attention link event.
925 **/
926 void
927 lpfc_handle_latt(struct lpfc_hba *phba)
928 {
929 struct lpfc_vport *vport = phba->pport;
930 struct lpfc_sli *psli = &phba->sli;
931 LPFC_MBOXQ_t *pmb;
932 volatile uint32_t control;
933 struct lpfc_dmabuf *mp;
934 int rc = 0;
935
936 pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
937 if (!pmb) {
938 rc = 1;
939 goto lpfc_handle_latt_err_exit;
940 }
941
942 mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
943 if (!mp) {
944 rc = 2;
945 goto lpfc_handle_latt_free_pmb;
946 }
947
948 mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
949 if (!mp->virt) {
950 rc = 3;
951 goto lpfc_handle_latt_free_mp;
952 }
953
954 /* Cleanup any outstanding ELS commands */
955 lpfc_els_flush_all_cmd(phba);
956
957 psli->slistat.link_event++;
958 lpfc_read_la(phba, pmb, mp);
959 pmb->mbox_cmpl = lpfc_mbx_cmpl_read_la;
960 pmb->vport = vport;
961 /* Block ELS IOCBs until we have processed this mbox command */
962 phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
963 rc = lpfc_sli_issue_mbox (phba, pmb, MBX_NOWAIT);
964 if (rc == MBX_NOT_FINISHED) {
965 rc = 4;
966 goto lpfc_handle_latt_free_mbuf;
967 }
968
969 /* Clear Link Attention in HA REG */
970 spin_lock_irq(&phba->hbalock);
971 writel(HA_LATT, phba->HAregaddr);
972 readl(phba->HAregaddr); /* flush */
973 spin_unlock_irq(&phba->hbalock);
974
975 return;
976
977 lpfc_handle_latt_free_mbuf:
978 phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
979 lpfc_mbuf_free(phba, mp->virt, mp->phys);
980 lpfc_handle_latt_free_mp:
981 kfree(mp);
982 lpfc_handle_latt_free_pmb:
983 mempool_free(pmb, phba->mbox_mem_pool);
984 lpfc_handle_latt_err_exit:
985 /* Enable Link attention interrupts */
986 spin_lock_irq(&phba->hbalock);
987 psli->sli_flag |= LPFC_PROCESS_LA;
988 control = readl(phba->HCregaddr);
989 control |= HC_LAINT_ENA;
990 writel(control, phba->HCregaddr);
991 readl(phba->HCregaddr); /* flush */
992
993 /* Clear Link Attention in HA REG */
994 writel(HA_LATT, phba->HAregaddr);
995 readl(phba->HAregaddr); /* flush */
996 spin_unlock_irq(&phba->hbalock);
997 lpfc_linkdown(phba);
998 phba->link_state = LPFC_HBA_ERROR;
999
1000 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1001 "0300 LATT: Cannot issue READ_LA: Data:%d\n", rc);
1002
1003 return;
1004 }
1005
1006 /**
1007 * lpfc_parse_vpd: Parse VPD (Vital Product Data).
1008 * @phba: pointer to lpfc hba data structure.
1009 * @vpd: pointer to the vital product data.
1010 * @len: length of the vital product data in bytes.
1011 *
1012 * This routine parses the Vital Product Data (VPD). The VPD is treated as
1013 * an array of characters. In this routine, the ModelName, ProgramType, and
1014 * ModelDesc, etc. fields of the phba data structure will be populated.
1015 *
1016 * Return codes
1017 * 0 - pointer to the VPD passed in is NULL
1018 * 1 - success
1019 **/
1020 static int
1021 lpfc_parse_vpd(struct lpfc_hba *phba, uint8_t *vpd, int len)
1022 {
1023 uint8_t lenlo, lenhi;
1024 int Length;
1025 int i, j;
1026 int finished = 0;
1027 int index = 0;
1028
1029 if (!vpd)
1030 return 0;
1031
1032 /* Vital Product */
1033 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
1034 "0455 Vital Product Data: x%x x%x x%x x%x\n",
1035 (uint32_t) vpd[0], (uint32_t) vpd[1], (uint32_t) vpd[2],
1036 (uint32_t) vpd[3]);
1037 while (!finished && (index < (len - 4))) {
1038 switch (vpd[index]) {
1039 case 0x82:
1040 case 0x91:
1041 index += 1;
1042 lenlo = vpd[index];
1043 index += 1;
1044 lenhi = vpd[index];
1045 index += 1;
1046 i = ((((unsigned short)lenhi) << 8) + lenlo);
1047 index += i;
1048 break;
1049 case 0x90:
1050 index += 1;
1051 lenlo = vpd[index];
1052 index += 1;
1053 lenhi = vpd[index];
1054 index += 1;
1055 Length = ((((unsigned short)lenhi) << 8) + lenlo);
1056 if (Length > len - index)
1057 Length = len - index;
1058 while (Length > 0) {
1059 /* Look for Serial Number */
1060 if ((vpd[index] == 'S') && (vpd[index+1] == 'N')) {
1061 index += 2;
1062 i = vpd[index];
1063 index += 1;
1064 j = 0;
1065 Length -= (3+i);
1066 while(i--) {
1067 phba->SerialNumber[j++] = vpd[index++];
1068 if (j == 31)
1069 break;
1070 }
1071 phba->SerialNumber[j] = 0;
1072 continue;
1073 }
1074 else if ((vpd[index] == 'V') && (vpd[index+1] == '1')) {
1075 phba->vpd_flag |= VPD_MODEL_DESC;
1076 index += 2;
1077 i = vpd[index];
1078 index += 1;
1079 j = 0;
1080 Length -= (3+i);
1081 while(i--) {
1082 phba->ModelDesc[j++] = vpd[index++];
1083 if (j == 255)
1084 break;
1085 }
1086 phba->ModelDesc[j] = 0;
1087 continue;
1088 }
1089 else if ((vpd[index] == 'V') && (vpd[index+1] == '2')) {
1090 phba->vpd_flag |= VPD_MODEL_NAME;
1091 index += 2;
1092 i = vpd[index];
1093 index += 1;
1094 j = 0;
1095 Length -= (3+i);
1096 while(i--) {
1097 phba->ModelName[j++] = vpd[index++];
1098 if (j == 79)
1099 break;
1100 }
1101 phba->ModelName[j] = 0;
1102 continue;
1103 }
1104 else if ((vpd[index] == 'V') && (vpd[index+1] == '3')) {
1105 phba->vpd_flag |= VPD_PROGRAM_TYPE;
1106 index += 2;
1107 i = vpd[index];
1108 index += 1;
1109 j = 0;
1110 Length -= (3+i);
1111 while(i--) {
1112 phba->ProgramType[j++] = vpd[index++];
1113 if (j == 255)
1114 break;
1115 }
1116 phba->ProgramType[j] = 0;
1117 continue;
1118 }
1119 else if ((vpd[index] == 'V') && (vpd[index+1] == '4')) {
1120 phba->vpd_flag |= VPD_PORT;
1121 index += 2;
1122 i = vpd[index];
1123 index += 1;
1124 j = 0;
1125 Length -= (3+i);
1126 while(i--) {
1127 phba->Port[j++] = vpd[index++];
1128 if (j == 19)
1129 break;
1130 }
1131 phba->Port[j] = 0;
1132 continue;
1133 }
1134 else {
1135 index += 2;
1136 i = vpd[index];
1137 index += 1;
1138 index += i;
1139 Length -= (3 + i);
1140 }
1141 }
1142 finished = 0;
1143 break;
1144 case 0x78:
1145 finished = 1;
1146 break;
1147 default:
1148 index ++;
1149 break;
1150 }
1151 }
1152
1153 return(1);
1154 }
1155
1156 /**
1157 * lpfc_get_hba_model_desc: Retrieve HBA device model name and description.
1158 * @phba: pointer to lpfc hba data structure.
1159 * @mdp: pointer to the data structure to hold the derived model name.
1160 * @descp: pointer to the data structure to hold the derived description.
1161 *
1162 * This routine retrieves HBA's description based on its registered PCI device
1163 * ID. The @descp passed into this function points to an array of 256 chars. It
1164 * shall be returned with the model name, maximum speed, and the host bus type.
1165 * The @mdp passed into this function points to an array of 80 chars. When the
1166 * function returns, the @mdp will be filled with the model name.
1167 **/
1168 static void
1169 lpfc_get_hba_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp)
1170 {
1171 lpfc_vpd_t *vp;
1172 uint16_t dev_id = phba->pcidev->device;
1173 int max_speed;
1174 int GE = 0;
1175 struct {
1176 char * name;
1177 int max_speed;
1178 char * bus;
1179 } m = {"<Unknown>", 0, ""};
1180
1181 if (mdp && mdp[0] != '\0'
1182 && descp && descp[0] != '\0')
1183 return;
1184
1185 if (phba->lmt & LMT_10Gb)
1186 max_speed = 10;
1187 else if (phba->lmt & LMT_8Gb)
1188 max_speed = 8;
1189 else if (phba->lmt & LMT_4Gb)
1190 max_speed = 4;
1191 else if (phba->lmt & LMT_2Gb)
1192 max_speed = 2;
1193 else
1194 max_speed = 1;
1195
1196 vp = &phba->vpd;
1197
1198 switch (dev_id) {
1199 case PCI_DEVICE_ID_FIREFLY:
1200 m = (typeof(m)){"LP6000", max_speed, "PCI"};
1201 break;
1202 case PCI_DEVICE_ID_SUPERFLY:
1203 if (vp->rev.biuRev >= 1 && vp->rev.biuRev <= 3)
1204 m = (typeof(m)){"LP7000", max_speed, "PCI"};
1205 else
1206 m = (typeof(m)){"LP7000E", max_speed, "PCI"};
1207 break;
1208 case PCI_DEVICE_ID_DRAGONFLY:
1209 m = (typeof(m)){"LP8000", max_speed, "PCI"};
1210 break;
1211 case PCI_DEVICE_ID_CENTAUR:
1212 if (FC_JEDEC_ID(vp->rev.biuRev) == CENTAUR_2G_JEDEC_ID)
1213 m = (typeof(m)){"LP9002", max_speed, "PCI"};
1214 else
1215 m = (typeof(m)){"LP9000", max_speed, "PCI"};
1216 break;
1217 case PCI_DEVICE_ID_RFLY:
1218 m = (typeof(m)){"LP952", max_speed, "PCI"};
1219 break;
1220 case PCI_DEVICE_ID_PEGASUS:
1221 m = (typeof(m)){"LP9802", max_speed, "PCI-X"};
1222 break;
1223 case PCI_DEVICE_ID_THOR:
1224 m = (typeof(m)){"LP10000", max_speed, "PCI-X"};
1225 break;
1226 case PCI_DEVICE_ID_VIPER:
1227 m = (typeof(m)){"LPX1000", max_speed, "PCI-X"};
1228 break;
1229 case PCI_DEVICE_ID_PFLY:
1230 m = (typeof(m)){"LP982", max_speed, "PCI-X"};
1231 break;
1232 case PCI_DEVICE_ID_TFLY:
1233 m = (typeof(m)){"LP1050", max_speed, "PCI-X"};
1234 break;
1235 case PCI_DEVICE_ID_HELIOS:
1236 m = (typeof(m)){"LP11000", max_speed, "PCI-X2"};
1237 break;
1238 case PCI_DEVICE_ID_HELIOS_SCSP:
1239 m = (typeof(m)){"LP11000-SP", max_speed, "PCI-X2"};
1240 break;
1241 case PCI_DEVICE_ID_HELIOS_DCSP:
1242 m = (typeof(m)){"LP11002-SP", max_speed, "PCI-X2"};
1243 break;
1244 case PCI_DEVICE_ID_NEPTUNE:
1245 m = (typeof(m)){"LPe1000", max_speed, "PCIe"};
1246 break;
1247 case PCI_DEVICE_ID_NEPTUNE_SCSP:
1248 m = (typeof(m)){"LPe1000-SP", max_speed, "PCIe"};
1249 break;
1250 case PCI_DEVICE_ID_NEPTUNE_DCSP:
1251 m = (typeof(m)){"LPe1002-SP", max_speed, "PCIe"};
1252 break;
1253 case PCI_DEVICE_ID_BMID:
1254 m = (typeof(m)){"LP1150", max_speed, "PCI-X2"};
1255 break;
1256 case PCI_DEVICE_ID_BSMB:
1257 m = (typeof(m)){"LP111", max_speed, "PCI-X2"};
1258 break;
1259 case PCI_DEVICE_ID_ZEPHYR:
1260 m = (typeof(m)){"LPe11000", max_speed, "PCIe"};
1261 break;
1262 case PCI_DEVICE_ID_ZEPHYR_SCSP:
1263 m = (typeof(m)){"LPe11000", max_speed, "PCIe"};
1264 break;
1265 case PCI_DEVICE_ID_ZEPHYR_DCSP:
1266 m = (typeof(m)){"LPe11002-SP", max_speed, "PCIe"};
1267 break;
1268 case PCI_DEVICE_ID_ZMID:
1269 m = (typeof(m)){"LPe1150", max_speed, "PCIe"};
1270 break;
1271 case PCI_DEVICE_ID_ZSMB:
1272 m = (typeof(m)){"LPe111", max_speed, "PCIe"};
1273 break;
1274 case PCI_DEVICE_ID_LP101:
1275 m = (typeof(m)){"LP101", max_speed, "PCI-X"};
1276 break;
1277 case PCI_DEVICE_ID_LP10000S:
1278 m = (typeof(m)){"LP10000-S", max_speed, "PCI"};
1279 break;
1280 case PCI_DEVICE_ID_LP11000S:
1281 m = (typeof(m)){"LP11000-S", max_speed,
1282 "PCI-X2"};
1283 break;
1284 case PCI_DEVICE_ID_LPE11000S:
1285 m = (typeof(m)){"LPe11000-S", max_speed,
1286 "PCIe"};
1287 break;
1288 case PCI_DEVICE_ID_SAT:
1289 m = (typeof(m)){"LPe12000", max_speed, "PCIe"};
1290 break;
1291 case PCI_DEVICE_ID_SAT_MID:
1292 m = (typeof(m)){"LPe1250", max_speed, "PCIe"};
1293 break;
1294 case PCI_DEVICE_ID_SAT_SMB:
1295 m = (typeof(m)){"LPe121", max_speed, "PCIe"};
1296 break;
1297 case PCI_DEVICE_ID_SAT_DCSP:
1298 m = (typeof(m)){"LPe12002-SP", max_speed, "PCIe"};
1299 break;
1300 case PCI_DEVICE_ID_SAT_SCSP:
1301 m = (typeof(m)){"LPe12000-SP", max_speed, "PCIe"};
1302 break;
1303 case PCI_DEVICE_ID_SAT_S:
1304 m = (typeof(m)){"LPe12000-S", max_speed, "PCIe"};
1305 break;
1306 case PCI_DEVICE_ID_HORNET:
1307 m = (typeof(m)){"LP21000", max_speed, "PCIe"};
1308 GE = 1;
1309 break;
1310 case PCI_DEVICE_ID_PROTEUS_VF:
1311 m = (typeof(m)) {"LPev12000", max_speed, "PCIe IOV"};
1312 break;
1313 case PCI_DEVICE_ID_PROTEUS_PF:
1314 m = (typeof(m)) {"LPev12000", max_speed, "PCIe IOV"};
1315 break;
1316 case PCI_DEVICE_ID_PROTEUS_S:
1317 m = (typeof(m)) {"LPemv12002-S", max_speed, "PCIe IOV"};
1318 break;
1319 default:
1320 m = (typeof(m)){ NULL };
1321 break;
1322 }
1323
1324 if (mdp && mdp[0] == '\0')
1325 snprintf(mdp, 79,"%s", m.name);
1326 if (descp && descp[0] == '\0')
1327 snprintf(descp, 255,
1328 "Emulex %s %d%s %s %s",
1329 m.name, m.max_speed,
1330 (GE) ? "GE" : "Gb",
1331 m.bus,
1332 (GE) ? "FCoE Adapter" : "Fibre Channel Adapter");
1333 }
1334
1335 /**
1336 * lpfc_post_buffer: Post IOCB(s) with DMA buffer descriptor(s) to a IOCB ring.
1337 * @phba: pointer to lpfc hba data structure.
1338 * @pring: pointer to a IOCB ring.
1339 * @cnt: the number of IOCBs to be posted to the IOCB ring.
1340 *
1341 * This routine posts a given number of IOCBs with the associated DMA buffer
1342 * descriptors specified by the cnt argument to the given IOCB ring.
1343 *
1344 * Return codes
1345 * The number of IOCBs NOT able to be posted to the IOCB ring.
1346 **/
1347 int
1348 lpfc_post_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, int cnt)
1349 {
1350 IOCB_t *icmd;
1351 struct lpfc_iocbq *iocb;
1352 struct lpfc_dmabuf *mp1, *mp2;
1353
1354 cnt += pring->missbufcnt;
1355
1356 /* While there are buffers to post */
1357 while (cnt > 0) {
1358 /* Allocate buffer for command iocb */
1359 iocb = lpfc_sli_get_iocbq(phba);
1360 if (iocb == NULL) {
1361 pring->missbufcnt = cnt;
1362 return cnt;
1363 }
1364 icmd = &iocb->iocb;
1365
1366 /* 2 buffers can be posted per command */
1367 /* Allocate buffer to post */
1368 mp1 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
1369 if (mp1)
1370 mp1->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &mp1->phys);
1371 if (!mp1 || !mp1->virt) {
1372 kfree(mp1);
1373 lpfc_sli_release_iocbq(phba, iocb);
1374 pring->missbufcnt = cnt;
1375 return cnt;
1376 }
1377
1378 INIT_LIST_HEAD(&mp1->list);
1379 /* Allocate buffer to post */
1380 if (cnt > 1) {
1381 mp2 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
1382 if (mp2)
1383 mp2->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
1384 &mp2->phys);
1385 if (!mp2 || !mp2->virt) {
1386 kfree(mp2);
1387 lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
1388 kfree(mp1);
1389 lpfc_sli_release_iocbq(phba, iocb);
1390 pring->missbufcnt = cnt;
1391 return cnt;
1392 }
1393
1394 INIT_LIST_HEAD(&mp2->list);
1395 } else {
1396 mp2 = NULL;
1397 }
1398
1399 icmd->un.cont64[0].addrHigh = putPaddrHigh(mp1->phys);
1400 icmd->un.cont64[0].addrLow = putPaddrLow(mp1->phys);
1401 icmd->un.cont64[0].tus.f.bdeSize = FCELSSIZE;
1402 icmd->ulpBdeCount = 1;
1403 cnt--;
1404 if (mp2) {
1405 icmd->un.cont64[1].addrHigh = putPaddrHigh(mp2->phys);
1406 icmd->un.cont64[1].addrLow = putPaddrLow(mp2->phys);
1407 icmd->un.cont64[1].tus.f.bdeSize = FCELSSIZE;
1408 cnt--;
1409 icmd->ulpBdeCount = 2;
1410 }
1411
1412 icmd->ulpCommand = CMD_QUE_RING_BUF64_CN;
1413 icmd->ulpLe = 1;
1414
1415 if (lpfc_sli_issue_iocb(phba, pring, iocb, 0) == IOCB_ERROR) {
1416 lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
1417 kfree(mp1);
1418 cnt++;
1419 if (mp2) {
1420 lpfc_mbuf_free(phba, mp2->virt, mp2->phys);
1421 kfree(mp2);
1422 cnt++;
1423 }
1424 lpfc_sli_release_iocbq(phba, iocb);
1425 pring->missbufcnt = cnt;
1426 return cnt;
1427 }
1428 lpfc_sli_ringpostbuf_put(phba, pring, mp1);
1429 if (mp2)
1430 lpfc_sli_ringpostbuf_put(phba, pring, mp2);
1431 }
1432 pring->missbufcnt = 0;
1433 return 0;
1434 }
1435
1436 /**
1437 * lpfc_post_rcv_buf: Post the initial receive IOCB buffers to ELS ring.
1438 * @phba: pointer to lpfc hba data structure.
1439 *
1440 * This routine posts initial receive IOCB buffers to the ELS ring. The
1441 * current number of initial IOCB buffers specified by LPFC_BUF_RING0 is
1442 * set to 64 IOCBs.
1443 *
1444 * Return codes
1445 * 0 - success (currently always success)
1446 **/
1447 static int
1448 lpfc_post_rcv_buf(struct lpfc_hba *phba)
1449 {
1450 struct lpfc_sli *psli = &phba->sli;
1451
1452 /* Ring 0, ELS / CT buffers */
1453 lpfc_post_buffer(phba, &psli->ring[LPFC_ELS_RING], LPFC_BUF_RING0);
1454 /* Ring 2 - FCP no buffers needed */
1455
1456 return 0;
1457 }
1458
1459 #define S(N,V) (((V)<<(N))|((V)>>(32-(N))))
1460
1461 /**
1462 * lpfc_sha_init: Set up initial array of hash table entries.
1463 * @HashResultPointer: pointer to an array as hash table.
1464 *
1465 * This routine sets up the initial values to the array of hash table entries
1466 * for the LC HBAs.
1467 **/
1468 static void
1469 lpfc_sha_init(uint32_t * HashResultPointer)
1470 {
1471 HashResultPointer[0] = 0x67452301;
1472 HashResultPointer[1] = 0xEFCDAB89;
1473 HashResultPointer[2] = 0x98BADCFE;
1474 HashResultPointer[3] = 0x10325476;
1475 HashResultPointer[4] = 0xC3D2E1F0;
1476 }
1477
1478 /**
1479 * lpfc_sha_iterate: Iterate initial hash table with the working hash table.
1480 * @HashResultPointer: pointer to an initial/result hash table.
1481 * @HashWorkingPointer: pointer to an working hash table.
1482 *
1483 * This routine iterates an initial hash table pointed by @HashResultPointer
1484 * with the values from the working hash table pointeed by @HashWorkingPointer.
1485 * The results are putting back to the initial hash table, returned through
1486 * the @HashResultPointer as the result hash table.
1487 **/
1488 static void
1489 lpfc_sha_iterate(uint32_t * HashResultPointer, uint32_t * HashWorkingPointer)
1490 {
1491 int t;
1492 uint32_t TEMP;
1493 uint32_t A, B, C, D, E;
1494 t = 16;
1495 do {
1496 HashWorkingPointer[t] =
1497 S(1,
1498 HashWorkingPointer[t - 3] ^ HashWorkingPointer[t -
1499 8] ^
1500 HashWorkingPointer[t - 14] ^ HashWorkingPointer[t - 16]);
1501 } while (++t <= 79);
1502 t = 0;
1503 A = HashResultPointer[0];
1504 B = HashResultPointer[1];
1505 C = HashResultPointer[2];
1506 D = HashResultPointer[3];
1507 E = HashResultPointer[4];
1508
1509 do {
1510 if (t < 20) {
1511 TEMP = ((B & C) | ((~B) & D)) + 0x5A827999;
1512 } else if (t < 40) {
1513 TEMP = (B ^ C ^ D) + 0x6ED9EBA1;
1514 } else if (t < 60) {
1515 TEMP = ((B & C) | (B & D) | (C & D)) + 0x8F1BBCDC;
1516 } else {
1517 TEMP = (B ^ C ^ D) + 0xCA62C1D6;
1518 }
1519 TEMP += S(5, A) + E + HashWorkingPointer[t];
1520 E = D;
1521 D = C;
1522 C = S(30, B);
1523 B = A;
1524 A = TEMP;
1525 } while (++t <= 79);
1526
1527 HashResultPointer[0] += A;
1528 HashResultPointer[1] += B;
1529 HashResultPointer[2] += C;
1530 HashResultPointer[3] += D;
1531 HashResultPointer[4] += E;
1532
1533 }
1534
1535 /**
1536 * lpfc_challenge_key: Create challenge key based on WWPN of the HBA.
1537 * @RandomChallenge: pointer to the entry of host challenge random number array.
1538 * @HashWorking: pointer to the entry of the working hash array.
1539 *
1540 * This routine calculates the working hash array referred by @HashWorking
1541 * from the challenge random numbers associated with the host, referred by
1542 * @RandomChallenge. The result is put into the entry of the working hash
1543 * array and returned by reference through @HashWorking.
1544 **/
1545 static void
1546 lpfc_challenge_key(uint32_t * RandomChallenge, uint32_t * HashWorking)
1547 {
1548 *HashWorking = (*RandomChallenge ^ *HashWorking);
1549 }
1550
1551 /**
1552 * lpfc_hba_init: Perform special handling for LC HBA initialization.
1553 * @phba: pointer to lpfc hba data structure.
1554 * @hbainit: pointer to an array of unsigned 32-bit integers.
1555 *
1556 * This routine performs the special handling for LC HBA initialization.
1557 **/
1558 void
1559 lpfc_hba_init(struct lpfc_hba *phba, uint32_t *hbainit)
1560 {
1561 int t;
1562 uint32_t *HashWorking;
1563 uint32_t *pwwnn = (uint32_t *) phba->wwnn;
1564
1565 HashWorking = kcalloc(80, sizeof(uint32_t), GFP_KERNEL);
1566 if (!HashWorking)
1567 return;
1568
1569 HashWorking[0] = HashWorking[78] = *pwwnn++;
1570 HashWorking[1] = HashWorking[79] = *pwwnn;
1571
1572 for (t = 0; t < 7; t++)
1573 lpfc_challenge_key(phba->RandomData + t, HashWorking + t);
1574
1575 lpfc_sha_init(hbainit);
1576 lpfc_sha_iterate(hbainit, HashWorking);
1577 kfree(HashWorking);
1578 }
1579
1580 /**
1581 * lpfc_cleanup: Performs vport cleanups before deleting a vport.
1582 * @vport: pointer to a virtual N_Port data structure.
1583 *
1584 * This routine performs the necessary cleanups before deleting the @vport.
1585 * It invokes the discovery state machine to perform necessary state
1586 * transitions and to release the ndlps associated with the @vport. Note,
1587 * the physical port is treated as @vport 0.
1588 **/
1589 void
1590 lpfc_cleanup(struct lpfc_vport *vport)
1591 {
1592 struct lpfc_hba *phba = vport->phba;
1593 struct lpfc_nodelist *ndlp, *next_ndlp;
1594 int i = 0;
1595
1596 if (phba->link_state > LPFC_LINK_DOWN)
1597 lpfc_port_link_failure(vport);
1598
1599 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
1600 if (!NLP_CHK_NODE_ACT(ndlp)) {
1601 ndlp = lpfc_enable_node(vport, ndlp,
1602 NLP_STE_UNUSED_NODE);
1603 if (!ndlp)
1604 continue;
1605 spin_lock_irq(&phba->ndlp_lock);
1606 NLP_SET_FREE_REQ(ndlp);
1607 spin_unlock_irq(&phba->ndlp_lock);
1608 /* Trigger the release of the ndlp memory */
1609 lpfc_nlp_put(ndlp);
1610 continue;
1611 }
1612 spin_lock_irq(&phba->ndlp_lock);
1613 if (NLP_CHK_FREE_REQ(ndlp)) {
1614 /* The ndlp should not be in memory free mode already */
1615 spin_unlock_irq(&phba->ndlp_lock);
1616 continue;
1617 } else
1618 /* Indicate request for freeing ndlp memory */
1619 NLP_SET_FREE_REQ(ndlp);
1620 spin_unlock_irq(&phba->ndlp_lock);
1621
1622 if (vport->port_type != LPFC_PHYSICAL_PORT &&
1623 ndlp->nlp_DID == Fabric_DID) {
1624 /* Just free up ndlp with Fabric_DID for vports */
1625 lpfc_nlp_put(ndlp);
1626 continue;
1627 }
1628
1629 if (ndlp->nlp_type & NLP_FABRIC)
1630 lpfc_disc_state_machine(vport, ndlp, NULL,
1631 NLP_EVT_DEVICE_RECOVERY);
1632
1633 lpfc_disc_state_machine(vport, ndlp, NULL,
1634 NLP_EVT_DEVICE_RM);
1635
1636 }
1637
1638 /* At this point, ALL ndlp's should be gone
1639 * because of the previous NLP_EVT_DEVICE_RM.
1640 * Lets wait for this to happen, if needed.
1641 */
1642 while (!list_empty(&vport->fc_nodes)) {
1643
1644 if (i++ > 3000) {
1645 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1646 "0233 Nodelist not empty\n");
1647 list_for_each_entry_safe(ndlp, next_ndlp,
1648 &vport->fc_nodes, nlp_listp) {
1649 lpfc_printf_vlog(ndlp->vport, KERN_ERR,
1650 LOG_NODE,
1651 "0282 did:x%x ndlp:x%p "
1652 "usgmap:x%x refcnt:%d\n",
1653 ndlp->nlp_DID, (void *)ndlp,
1654 ndlp->nlp_usg_map,
1655 atomic_read(
1656 &ndlp->kref.refcount));
1657 }
1658 break;
1659 }
1660
1661 /* Wait for any activity on ndlps to settle */
1662 msleep(10);
1663 }
1664 return;
1665 }
1666
1667 /**
1668 * lpfc_stop_vport_timers: Stop all the timers associated with a vport.
1669 * @vport: pointer to a virtual N_Port data structure.
1670 *
1671 * This routine stops all the timers associated with a @vport. This function
1672 * is invoked before disabling or deleting a @vport. Note that the physical
1673 * port is treated as @vport 0.
1674 **/
1675 void
1676 lpfc_stop_vport_timers(struct lpfc_vport *vport)
1677 {
1678 del_timer_sync(&vport->els_tmofunc);
1679 del_timer_sync(&vport->fc_fdmitmo);
1680 lpfc_can_disctmo(vport);
1681 return;
1682 }
1683
1684 /**
1685 * lpfc_stop_phba_timers: Stop all the timers associated with an HBA.
1686 * @phba: pointer to lpfc hba data structure.
1687 *
1688 * This routine stops all the timers associated with a HBA. This function is
1689 * invoked before either putting a HBA offline or unloading the driver.
1690 **/
1691 static void
1692 lpfc_stop_phba_timers(struct lpfc_hba *phba)
1693 {
1694 del_timer_sync(&phba->fcp_poll_timer);
1695 lpfc_stop_vport_timers(phba->pport);
1696 del_timer_sync(&phba->sli.mbox_tmo);
1697 del_timer_sync(&phba->fabric_block_timer);
1698 phba->hb_outstanding = 0;
1699 del_timer_sync(&phba->hb_tmofunc);
1700 del_timer_sync(&phba->eratt_poll);
1701 return;
1702 }
1703
1704 /**
1705 * lpfc_block_mgmt_io: Mark a HBA's management interface as blocked.
1706 * @phba: pointer to lpfc hba data structure.
1707 *
1708 * This routine marks a HBA's management interface as blocked. Once the HBA's
1709 * management interface is marked as blocked, all the user space access to
1710 * the HBA, whether they are from sysfs interface or libdfc interface will
1711 * all be blocked. The HBA is set to block the management interface when the
1712 * driver prepares the HBA interface for online or offline.
1713 **/
1714 static void
1715 lpfc_block_mgmt_io(struct lpfc_hba * phba)
1716 {
1717 unsigned long iflag;
1718
1719 spin_lock_irqsave(&phba->hbalock, iflag);
1720 phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO;
1721 spin_unlock_irqrestore(&phba->hbalock, iflag);
1722 }
1723
1724 /**
1725 * lpfc_online: Initialize and bring a HBA online.
1726 * @phba: pointer to lpfc hba data structure.
1727 *
1728 * This routine initializes the HBA and brings a HBA online. During this
1729 * process, the management interface is blocked to prevent user space access
1730 * to the HBA interfering with the driver initialization.
1731 *
1732 * Return codes
1733 * 0 - successful
1734 * 1 - failed
1735 **/
1736 int
1737 lpfc_online(struct lpfc_hba *phba)
1738 {
1739 struct lpfc_vport *vport = phba->pport;
1740 struct lpfc_vport **vports;
1741 int i;
1742
1743 if (!phba)
1744 return 0;
1745
1746 if (!(vport->fc_flag & FC_OFFLINE_MODE))
1747 return 0;
1748
1749 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
1750 "0458 Bring Adapter online\n");
1751
1752 lpfc_block_mgmt_io(phba);
1753
1754 if (!lpfc_sli_queue_setup(phba)) {
1755 lpfc_unblock_mgmt_io(phba);
1756 return 1;
1757 }
1758
1759 if (lpfc_sli_hba_setup(phba)) { /* Initialize the HBA */
1760 lpfc_unblock_mgmt_io(phba);
1761 return 1;
1762 }
1763
1764 vports = lpfc_create_vport_work_array(phba);
1765 if (vports != NULL)
1766 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
1767 struct Scsi_Host *shost;
1768 shost = lpfc_shost_from_vport(vports[i]);
1769 spin_lock_irq(shost->host_lock);
1770 vports[i]->fc_flag &= ~FC_OFFLINE_MODE;
1771 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
1772 vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
1773 spin_unlock_irq(shost->host_lock);
1774 }
1775 lpfc_destroy_vport_work_array(phba, vports);
1776
1777 lpfc_unblock_mgmt_io(phba);
1778 return 0;
1779 }
1780
1781 /**
1782 * lpfc_unblock_mgmt_io: Mark a HBA's management interface to be not blocked.
1783 * @phba: pointer to lpfc hba data structure.
1784 *
1785 * This routine marks a HBA's management interface as not blocked. Once the
1786 * HBA's management interface is marked as not blocked, all the user space
1787 * access to the HBA, whether they are from sysfs interface or libdfc
1788 * interface will be allowed. The HBA is set to block the management interface
1789 * when the driver prepares the HBA interface for online or offline and then
1790 * set to unblock the management interface afterwards.
1791 **/
1792 void
1793 lpfc_unblock_mgmt_io(struct lpfc_hba * phba)
1794 {
1795 unsigned long iflag;
1796
1797 spin_lock_irqsave(&phba->hbalock, iflag);
1798 phba->sli.sli_flag &= ~LPFC_BLOCK_MGMT_IO;
1799 spin_unlock_irqrestore(&phba->hbalock, iflag);
1800 }
1801
1802 /**
1803 * lpfc_offline_prep: Prepare a HBA to be brought offline.
1804 * @phba: pointer to lpfc hba data structure.
1805 *
1806 * This routine is invoked to prepare a HBA to be brought offline. It performs
1807 * unregistration login to all the nodes on all vports and flushes the mailbox
1808 * queue to make it ready to be brought offline.
1809 **/
1810 void
1811 lpfc_offline_prep(struct lpfc_hba * phba)
1812 {
1813 struct lpfc_vport *vport = phba->pport;
1814 struct lpfc_nodelist *ndlp, *next_ndlp;
1815 struct lpfc_vport **vports;
1816 int i;
1817
1818 if (vport->fc_flag & FC_OFFLINE_MODE)
1819 return;
1820
1821 lpfc_block_mgmt_io(phba);
1822
1823 lpfc_linkdown(phba);
1824
1825 /* Issue an unreg_login to all nodes on all vports */
1826 vports = lpfc_create_vport_work_array(phba);
1827 if (vports != NULL) {
1828 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
1829 struct Scsi_Host *shost;
1830
1831 if (vports[i]->load_flag & FC_UNLOADING)
1832 continue;
1833 shost = lpfc_shost_from_vport(vports[i]);
1834 list_for_each_entry_safe(ndlp, next_ndlp,
1835 &vports[i]->fc_nodes,
1836 nlp_listp) {
1837 if (!NLP_CHK_NODE_ACT(ndlp))
1838 continue;
1839 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
1840 continue;
1841 if (ndlp->nlp_type & NLP_FABRIC) {
1842 lpfc_disc_state_machine(vports[i], ndlp,
1843 NULL, NLP_EVT_DEVICE_RECOVERY);
1844 lpfc_disc_state_machine(vports[i], ndlp,
1845 NULL, NLP_EVT_DEVICE_RM);
1846 }
1847 spin_lock_irq(shost->host_lock);
1848 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1849 spin_unlock_irq(shost->host_lock);
1850 lpfc_unreg_rpi(vports[i], ndlp);
1851 }
1852 }
1853 }
1854 lpfc_destroy_vport_work_array(phba, vports);
1855
1856 lpfc_sli_flush_mbox_queue(phba);
1857 }
1858
1859 /**
1860 * lpfc_offline: Bring a HBA offline.
1861 * @phba: pointer to lpfc hba data structure.
1862 *
1863 * This routine actually brings a HBA offline. It stops all the timers
1864 * associated with the HBA, brings down the SLI layer, and eventually
1865 * marks the HBA as in offline state for the upper layer protocol.
1866 **/
1867 void
1868 lpfc_offline(struct lpfc_hba *phba)
1869 {
1870 struct Scsi_Host *shost;
1871 struct lpfc_vport **vports;
1872 int i;
1873
1874 if (phba->pport->fc_flag & FC_OFFLINE_MODE)
1875 return;
1876
1877 /* stop all timers associated with this hba */
1878 lpfc_stop_phba_timers(phba);
1879 vports = lpfc_create_vport_work_array(phba);
1880 if (vports != NULL)
1881 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++)
1882 lpfc_stop_vport_timers(vports[i]);
1883 lpfc_destroy_vport_work_array(phba, vports);
1884 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
1885 "0460 Bring Adapter offline\n");
1886 /* Bring down the SLI Layer and cleanup. The HBA is offline
1887 now. */
1888 lpfc_sli_hba_down(phba);
1889 spin_lock_irq(&phba->hbalock);
1890 phba->work_ha = 0;
1891 spin_unlock_irq(&phba->hbalock);
1892 vports = lpfc_create_vport_work_array(phba);
1893 if (vports != NULL)
1894 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
1895 shost = lpfc_shost_from_vport(vports[i]);
1896 spin_lock_irq(shost->host_lock);
1897 vports[i]->work_port_events = 0;
1898 vports[i]->fc_flag |= FC_OFFLINE_MODE;
1899 spin_unlock_irq(shost->host_lock);
1900 }
1901 lpfc_destroy_vport_work_array(phba, vports);
1902 }
1903
1904 /**
1905 * lpfc_scsi_free: Free all the SCSI buffers and IOCBs from driver lists.
1906 * @phba: pointer to lpfc hba data structure.
1907 *
1908 * This routine is to free all the SCSI buffers and IOCBs from the driver
1909 * list back to kernel. It is called from lpfc_pci_remove_one to free
1910 * the internal resources before the device is removed from the system.
1911 *
1912 * Return codes
1913 * 0 - successful (for now, it always returns 0)
1914 **/
1915 static int
1916 lpfc_scsi_free(struct lpfc_hba *phba)
1917 {
1918 struct lpfc_scsi_buf *sb, *sb_next;
1919 struct lpfc_iocbq *io, *io_next;
1920
1921 spin_lock_irq(&phba->hbalock);
1922 /* Release all the lpfc_scsi_bufs maintained by this host. */
1923 list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list, list) {
1924 list_del(&sb->list);
1925 pci_pool_free(phba->lpfc_scsi_dma_buf_pool, sb->data,
1926 sb->dma_handle);
1927 kfree(sb);
1928 phba->total_scsi_bufs--;
1929 }
1930
1931 /* Release all the lpfc_iocbq entries maintained by this host. */
1932 list_for_each_entry_safe(io, io_next, &phba->lpfc_iocb_list, list) {
1933 list_del(&io->list);
1934 kfree(io);
1935 phba->total_iocbq_bufs--;
1936 }
1937
1938 spin_unlock_irq(&phba->hbalock);
1939
1940 return 0;
1941 }
1942
1943 /**
1944 * lpfc_create_port: Create an FC port.
1945 * @phba: pointer to lpfc hba data structure.
1946 * @instance: a unique integer ID to this FC port.
1947 * @dev: pointer to the device data structure.
1948 *
1949 * This routine creates a FC port for the upper layer protocol. The FC port
1950 * can be created on top of either a physical port or a virtual port provided
1951 * by the HBA. This routine also allocates a SCSI host data structure (shost)
1952 * and associates the FC port created before adding the shost into the SCSI
1953 * layer.
1954 *
1955 * Return codes
1956 * @vport - pointer to the virtual N_Port data structure.
1957 * NULL - port create failed.
1958 **/
1959 struct lpfc_vport *
1960 lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev)
1961 {
1962 struct lpfc_vport *vport;
1963 struct Scsi_Host *shost;
1964 int error = 0;
1965
1966 if (dev != &phba->pcidev->dev)
1967 shost = scsi_host_alloc(&lpfc_vport_template,
1968 sizeof(struct lpfc_vport));
1969 else
1970 shost = scsi_host_alloc(&lpfc_template,
1971 sizeof(struct lpfc_vport));
1972 if (!shost)
1973 goto out;
1974
1975 vport = (struct lpfc_vport *) shost->hostdata;
1976 vport->phba = phba;
1977 vport->load_flag |= FC_LOADING;
1978 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
1979 vport->fc_rscn_flush = 0;
1980
1981 lpfc_get_vport_cfgparam(vport);
1982 shost->unique_id = instance;
1983 shost->max_id = LPFC_MAX_TARGET;
1984 shost->max_lun = vport->cfg_max_luns;
1985 shost->this_id = -1;
1986 shost->max_cmd_len = 16;
1987 /*
1988 * Set initial can_queue value since 0 is no longer supported and
1989 * scsi_add_host will fail. This will be adjusted later based on the
1990 * max xri value determined in hba setup.
1991 */
1992 shost->can_queue = phba->cfg_hba_queue_depth - 10;
1993 if (dev != &phba->pcidev->dev) {
1994 shost->transportt = lpfc_vport_transport_template;
1995 vport->port_type = LPFC_NPIV_PORT;
1996 } else {
1997 shost->transportt = lpfc_transport_template;
1998 vport->port_type = LPFC_PHYSICAL_PORT;
1999 }
2000
2001 /* Initialize all internally managed lists. */
2002 INIT_LIST_HEAD(&vport->fc_nodes);
2003 spin_lock_init(&vport->work_port_lock);
2004
2005 init_timer(&vport->fc_disctmo);
2006 vport->fc_disctmo.function = lpfc_disc_timeout;
2007 vport->fc_disctmo.data = (unsigned long)vport;
2008
2009 init_timer(&vport->fc_fdmitmo);
2010 vport->fc_fdmitmo.function = lpfc_fdmi_tmo;
2011 vport->fc_fdmitmo.data = (unsigned long)vport;
2012
2013 init_timer(&vport->els_tmofunc);
2014 vport->els_tmofunc.function = lpfc_els_timeout;
2015 vport->els_tmofunc.data = (unsigned long)vport;
2016
2017 error = scsi_add_host(shost, dev);
2018 if (error)
2019 goto out_put_shost;
2020
2021 spin_lock_irq(&phba->hbalock);
2022 list_add_tail(&vport->listentry, &phba->port_list);
2023 spin_unlock_irq(&phba->hbalock);
2024 return vport;
2025
2026 out_put_shost:
2027 scsi_host_put(shost);
2028 out:
2029 return NULL;
2030 }
2031
2032 /**
2033 * destroy_port: Destroy an FC port.
2034 * @vport: pointer to an lpfc virtual N_Port data structure.
2035 *
2036 * This routine destroys a FC port from the upper layer protocol. All the
2037 * resources associated with the port are released.
2038 **/
2039 void
2040 destroy_port(struct lpfc_vport *vport)
2041 {
2042 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2043 struct lpfc_hba *phba = vport->phba;
2044
2045 kfree(vport->vname);
2046
2047 lpfc_debugfs_terminate(vport);
2048 fc_remove_host(shost);
2049 scsi_remove_host(shost);
2050
2051 spin_lock_irq(&phba->hbalock);
2052 list_del_init(&vport->listentry);
2053 spin_unlock_irq(&phba->hbalock);
2054
2055 lpfc_cleanup(vport);
2056 return;
2057 }
2058
2059 /**
2060 * lpfc_get_instance: Get a unique integer ID.
2061 *
2062 * This routine allocates a unique integer ID from lpfc_hba_index pool. It
2063 * uses the kernel idr facility to perform the task.
2064 *
2065 * Return codes:
2066 * instance - a unique integer ID allocated as the new instance.
2067 * -1 - lpfc get instance failed.
2068 **/
2069 int
2070 lpfc_get_instance(void)
2071 {
2072 int instance = 0;
2073
2074 /* Assign an unused number */
2075 if (!idr_pre_get(&lpfc_hba_index, GFP_KERNEL))
2076 return -1;
2077 if (idr_get_new(&lpfc_hba_index, NULL, &instance))
2078 return -1;
2079 return instance;
2080 }
2081
2082 /**
2083 * lpfc_scan_finished: method for SCSI layer to detect whether scan is done.
2084 * @shost: pointer to SCSI host data structure.
2085 * @time: elapsed time of the scan in jiffies.
2086 *
2087 * This routine is called by the SCSI layer with a SCSI host to determine
2088 * whether the scan host is finished.
2089 *
2090 * Note: there is no scan_start function as adapter initialization will have
2091 * asynchronously kicked off the link initialization.
2092 *
2093 * Return codes
2094 * 0 - SCSI host scan is not over yet.
2095 * 1 - SCSI host scan is over.
2096 **/
2097 int lpfc_scan_finished(struct Scsi_Host *shost, unsigned long time)
2098 {
2099 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2100 struct lpfc_hba *phba = vport->phba;
2101 int stat = 0;
2102
2103 spin_lock_irq(shost->host_lock);
2104
2105 if (vport->load_flag & FC_UNLOADING) {
2106 stat = 1;
2107 goto finished;
2108 }
2109 if (time >= 30 * HZ) {
2110 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2111 "0461 Scanning longer than 30 "
2112 "seconds. Continuing initialization\n");
2113 stat = 1;
2114 goto finished;
2115 }
2116 if (time >= 15 * HZ && phba->link_state <= LPFC_LINK_DOWN) {
2117 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2118 "0465 Link down longer than 15 "
2119 "seconds. Continuing initialization\n");
2120 stat = 1;
2121 goto finished;
2122 }
2123
2124 if (vport->port_state != LPFC_VPORT_READY)
2125 goto finished;
2126 if (vport->num_disc_nodes || vport->fc_prli_sent)
2127 goto finished;
2128 if (vport->fc_map_cnt == 0 && time < 2 * HZ)
2129 goto finished;
2130 if ((phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) != 0)
2131 goto finished;
2132
2133 stat = 1;
2134
2135 finished:
2136 spin_unlock_irq(shost->host_lock);
2137 return stat;
2138 }
2139
2140 /**
2141 * lpfc_host_attrib_init: Initialize SCSI host attributes on a FC port.
2142 * @shost: pointer to SCSI host data structure.
2143 *
2144 * This routine initializes a given SCSI host attributes on a FC port. The
2145 * SCSI host can be either on top of a physical port or a virtual port.
2146 **/
2147 void lpfc_host_attrib_init(struct Scsi_Host *shost)
2148 {
2149 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2150 struct lpfc_hba *phba = vport->phba;
2151 /*
2152 * Set fixed host attributes. Must done after lpfc_sli_hba_setup().
2153 */
2154
2155 fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
2156 fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
2157 fc_host_supported_classes(shost) = FC_COS_CLASS3;
2158
2159 memset(fc_host_supported_fc4s(shost), 0,
2160 sizeof(fc_host_supported_fc4s(shost)));
2161 fc_host_supported_fc4s(shost)[2] = 1;
2162 fc_host_supported_fc4s(shost)[7] = 1;
2163
2164 lpfc_vport_symbolic_node_name(vport, fc_host_symbolic_name(shost),
2165 sizeof fc_host_symbolic_name(shost));
2166
2167 fc_host_supported_speeds(shost) = 0;
2168 if (phba->lmt & LMT_10Gb)
2169 fc_host_supported_speeds(shost) |= FC_PORTSPEED_10GBIT;
2170 if (phba->lmt & LMT_8Gb)
2171 fc_host_supported_speeds(shost) |= FC_PORTSPEED_8GBIT;
2172 if (phba->lmt & LMT_4Gb)
2173 fc_host_supported_speeds(shost) |= FC_PORTSPEED_4GBIT;
2174 if (phba->lmt & LMT_2Gb)
2175 fc_host_supported_speeds(shost) |= FC_PORTSPEED_2GBIT;
2176 if (phba->lmt & LMT_1Gb)
2177 fc_host_supported_speeds(shost) |= FC_PORTSPEED_1GBIT;
2178
2179 fc_host_maxframe_size(shost) =
2180 (((uint32_t) vport->fc_sparam.cmn.bbRcvSizeMsb & 0x0F) << 8) |
2181 (uint32_t) vport->fc_sparam.cmn.bbRcvSizeLsb;
2182
2183 /* This value is also unchanging */
2184 memset(fc_host_active_fc4s(shost), 0,
2185 sizeof(fc_host_active_fc4s(shost)));
2186 fc_host_active_fc4s(shost)[2] = 1;
2187 fc_host_active_fc4s(shost)[7] = 1;
2188
2189 fc_host_max_npiv_vports(shost) = phba->max_vpi;
2190 spin_lock_irq(shost->host_lock);
2191 vport->load_flag &= ~FC_LOADING;
2192 spin_unlock_irq(shost->host_lock);
2193 }
2194
2195 /**
2196 * lpfc_enable_msix: Enable MSI-X interrupt mode.
2197 * @phba: pointer to lpfc hba data structure.
2198 *
2199 * This routine is invoked to enable the MSI-X interrupt vectors. The kernel
2200 * function pci_enable_msix() is called to enable the MSI-X vectors. Note that
2201 * pci_enable_msix(), once invoked, enables either all or nothing, depending
2202 * on the current availability of PCI vector resources. The device driver is
2203 * responsible for calling the individual request_irq() to register each MSI-X
2204 * vector with a interrupt handler, which is done in this function. Note that
2205 * later when device is unloading, the driver should always call free_irq()
2206 * on all MSI-X vectors it has done request_irq() on before calling
2207 * pci_disable_msix(). Failure to do so results in a BUG_ON() and a device
2208 * will be left with MSI-X enabled and leaks its vectors.
2209 *
2210 * Return codes
2211 * 0 - sucessful
2212 * other values - error
2213 **/
2214 static int
2215 lpfc_enable_msix(struct lpfc_hba *phba)
2216 {
2217 int rc, i;
2218 LPFC_MBOXQ_t *pmb;
2219
2220 /* Set up MSI-X multi-message vectors */
2221 for (i = 0; i < LPFC_MSIX_VECTORS; i++)
2222 phba->msix_entries[i].entry = i;
2223
2224 /* Configure MSI-X capability structure */
2225 rc = pci_enable_msix(phba->pcidev, phba->msix_entries,
2226 ARRAY_SIZE(phba->msix_entries));
2227 if (rc) {
2228 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2229 "0420 Enable MSI-X failed (%d), continuing "
2230 "with MSI\n", rc);
2231 goto msi_fail_out;
2232 } else
2233 for (i = 0; i < LPFC_MSIX_VECTORS; i++)
2234 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2235 "0477 MSI-X entry[%d]: vector=x%x "
2236 "message=%d\n", i,
2237 phba->msix_entries[i].vector,
2238 phba->msix_entries[i].entry);
2239 /*
2240 * Assign MSI-X vectors to interrupt handlers
2241 */
2242
2243 /* vector-0 is associated to slow-path handler */
2244 rc = request_irq(phba->msix_entries[0].vector, &lpfc_sp_intr_handler,
2245 IRQF_SHARED, LPFC_SP_DRIVER_HANDLER_NAME, phba);
2246 if (rc) {
2247 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2248 "0421 MSI-X slow-path request_irq failed "
2249 "(%d), continuing with MSI\n", rc);
2250 goto msi_fail_out;
2251 }
2252
2253 /* vector-1 is associated to fast-path handler */
2254 rc = request_irq(phba->msix_entries[1].vector, &lpfc_fp_intr_handler,
2255 IRQF_SHARED, LPFC_FP_DRIVER_HANDLER_NAME, phba);
2256
2257 if (rc) {
2258 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2259 "0429 MSI-X fast-path request_irq failed "
2260 "(%d), continuing with MSI\n", rc);
2261 goto irq_fail_out;
2262 }
2263
2264 /*
2265 * Configure HBA MSI-X attention conditions to messages
2266 */
2267 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2268
2269 if (!pmb) {
2270 rc = -ENOMEM;
2271 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2272 "0474 Unable to allocate memory for issuing "
2273 "MBOX_CONFIG_MSI command\n");
2274 goto mem_fail_out;
2275 }
2276 rc = lpfc_config_msi(phba, pmb);
2277 if (rc)
2278 goto mbx_fail_out;
2279 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
2280 if (rc != MBX_SUCCESS) {
2281 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
2282 "0351 Config MSI mailbox command failed, "
2283 "mbxCmd x%x, mbxStatus x%x\n",
2284 pmb->mb.mbxCommand, pmb->mb.mbxStatus);
2285 goto mbx_fail_out;
2286 }
2287
2288 /* Free memory allocated for mailbox command */
2289 mempool_free(pmb, phba->mbox_mem_pool);
2290 return rc;
2291
2292 mbx_fail_out:
2293 /* Free memory allocated for mailbox command */
2294 mempool_free(pmb, phba->mbox_mem_pool);
2295
2296 mem_fail_out:
2297 /* free the irq already requested */
2298 free_irq(phba->msix_entries[1].vector, phba);
2299
2300 irq_fail_out:
2301 /* free the irq already requested */
2302 free_irq(phba->msix_entries[0].vector, phba);
2303
2304 msi_fail_out:
2305 /* Unconfigure MSI-X capability structure */
2306 pci_disable_msix(phba->pcidev);
2307 return rc;
2308 }
2309
2310 /**
2311 * lpfc_disable_msix: Disable MSI-X interrupt mode.
2312 * @phba: pointer to lpfc hba data structure.
2313 *
2314 * This routine is invoked to release the MSI-X vectors and then disable the
2315 * MSI-X interrupt mode.
2316 **/
2317 static void
2318 lpfc_disable_msix(struct lpfc_hba *phba)
2319 {
2320 int i;
2321
2322 /* Free up MSI-X multi-message vectors */
2323 for (i = 0; i < LPFC_MSIX_VECTORS; i++)
2324 free_irq(phba->msix_entries[i].vector, phba);
2325 /* Disable MSI-X */
2326 pci_disable_msix(phba->pcidev);
2327 }
2328
2329 /**
2330 * lpfc_pci_probe_one: lpfc PCI probe func to register device to PCI subsystem.
2331 * @pdev: pointer to PCI device
2332 * @pid: pointer to PCI device identifier
2333 *
2334 * This routine is to be registered to the kernel's PCI subsystem. When an
2335 * Emulex HBA is presented in PCI bus, the kernel PCI subsystem looks at
2336 * PCI device-specific information of the device and driver to see if the
2337 * driver state that it can support this kind of device. If the match is
2338 * successful, the driver core invokes this routine. If this routine
2339 * determines it can claim the HBA, it does all the initialization that it
2340 * needs to do to handle the HBA properly.
2341 *
2342 * Return code
2343 * 0 - driver can claim the device
2344 * negative value - driver can not claim the device
2345 **/
2346 static int __devinit
2347 lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
2348 {
2349 struct lpfc_vport *vport = NULL;
2350 struct lpfc_hba *phba;
2351 struct lpfc_sli *psli;
2352 struct lpfc_iocbq *iocbq_entry = NULL, *iocbq_next = NULL;
2353 struct Scsi_Host *shost = NULL;
2354 void *ptr;
2355 unsigned long bar0map_len, bar2map_len;
2356 int error = -ENODEV, retval;
2357 int i, hbq_count;
2358 uint16_t iotag;
2359 int bars = pci_select_bars(pdev, IORESOURCE_MEM);
2360 struct lpfc_adapter_event_header adapter_event;
2361
2362 if (pci_enable_device_mem(pdev))
2363 goto out;
2364 if (pci_request_selected_regions(pdev, bars, LPFC_DRIVER_NAME))
2365 goto out_disable_device;
2366
2367 phba = kzalloc(sizeof (struct lpfc_hba), GFP_KERNEL);
2368 if (!phba)
2369 goto out_release_regions;
2370
2371 atomic_set(&phba->fast_event_count, 0);
2372 spin_lock_init(&phba->hbalock);
2373
2374 /* Initialize ndlp management spinlock */
2375 spin_lock_init(&phba->ndlp_lock);
2376
2377 phba->pcidev = pdev;
2378
2379 /* Assign an unused board number */
2380 if ((phba->brd_no = lpfc_get_instance()) < 0)
2381 goto out_free_phba;
2382
2383 INIT_LIST_HEAD(&phba->port_list);
2384 init_waitqueue_head(&phba->wait_4_mlo_m_q);
2385 /*
2386 * Get all the module params for configuring this host and then
2387 * establish the host.
2388 */
2389 lpfc_get_cfgparam(phba);
2390 phba->max_vpi = LPFC_MAX_VPI;
2391
2392 /* Initialize timers used by driver */
2393 init_timer(&phba->hb_tmofunc);
2394 phba->hb_tmofunc.function = lpfc_hb_timeout;
2395 phba->hb_tmofunc.data = (unsigned long)phba;
2396
2397 psli = &phba->sli;
2398 init_timer(&psli->mbox_tmo);
2399 psli->mbox_tmo.function = lpfc_mbox_timeout;
2400 psli->mbox_tmo.data = (unsigned long) phba;
2401 init_timer(&phba->fcp_poll_timer);
2402 phba->fcp_poll_timer.function = lpfc_poll_timeout;
2403 phba->fcp_poll_timer.data = (unsigned long) phba;
2404 init_timer(&phba->fabric_block_timer);
2405 phba->fabric_block_timer.function = lpfc_fabric_block_timeout;
2406 phba->fabric_block_timer.data = (unsigned long) phba;
2407 init_timer(&phba->eratt_poll);
2408 phba->eratt_poll.function = lpfc_poll_eratt;
2409 phba->eratt_poll.data = (unsigned long) phba;
2410
2411 pci_set_master(pdev);
2412 pci_try_set_mwi(pdev);
2413
2414 if (pci_set_dma_mask(phba->pcidev, DMA_64BIT_MASK) != 0)
2415 if (pci_set_dma_mask(phba->pcidev, DMA_32BIT_MASK) != 0)
2416 goto out_idr_remove;
2417
2418 /*
2419 * Get the bus address of Bar0 and Bar2 and the number of bytes
2420 * required by each mapping.
2421 */
2422 phba->pci_bar0_map = pci_resource_start(phba->pcidev, 0);
2423 bar0map_len = pci_resource_len(phba->pcidev, 0);
2424
2425 phba->pci_bar2_map = pci_resource_start(phba->pcidev, 2);
2426 bar2map_len = pci_resource_len(phba->pcidev, 2);
2427
2428 /* Map HBA SLIM to a kernel virtual address. */
2429 phba->slim_memmap_p = ioremap(phba->pci_bar0_map, bar0map_len);
2430 if (!phba->slim_memmap_p) {
2431 error = -ENODEV;
2432 dev_printk(KERN_ERR, &pdev->dev,
2433 "ioremap failed for SLIM memory.\n");
2434 goto out_idr_remove;
2435 }
2436
2437 /* Map HBA Control Registers to a kernel virtual address. */
2438 phba->ctrl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len);
2439 if (!phba->ctrl_regs_memmap_p) {
2440 error = -ENODEV;
2441 dev_printk(KERN_ERR, &pdev->dev,
2442 "ioremap failed for HBA control registers.\n");
2443 goto out_iounmap_slim;
2444 }
2445
2446 /* Allocate memory for SLI-2 structures */
2447 phba->slim2p.virt = dma_alloc_coherent(&phba->pcidev->dev,
2448 SLI2_SLIM_SIZE,
2449 &phba->slim2p.phys,
2450 GFP_KERNEL);
2451 if (!phba->slim2p.virt)
2452 goto out_iounmap;
2453
2454 memset(phba->slim2p.virt, 0, SLI2_SLIM_SIZE);
2455 phba->mbox = phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, mbx);
2456 phba->pcb = (phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, pcb));
2457 phba->IOCBs = (phba->slim2p.virt +
2458 offsetof(struct lpfc_sli2_slim, IOCBs));
2459
2460 phba->hbqslimp.virt = dma_alloc_coherent(&phba->pcidev->dev,
2461 lpfc_sli_hbq_size(),
2462 &phba->hbqslimp.phys,
2463 GFP_KERNEL);
2464 if (!phba->hbqslimp.virt)
2465 goto out_free_slim;
2466
2467 hbq_count = lpfc_sli_hbq_count();
2468 ptr = phba->hbqslimp.virt;
2469 for (i = 0; i < hbq_count; ++i) {
2470 phba->hbqs[i].hbq_virt = ptr;
2471 INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
2472 ptr += (lpfc_hbq_defs[i]->entry_count *
2473 sizeof(struct lpfc_hbq_entry));
2474 }
2475 phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_els_hbq_alloc;
2476 phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_els_hbq_free;
2477
2478 memset(phba->hbqslimp.virt, 0, lpfc_sli_hbq_size());
2479
2480 INIT_LIST_HEAD(&phba->hbqbuf_in_list);
2481
2482 /* Initialize the SLI Layer to run with lpfc HBAs. */
2483 lpfc_sli_setup(phba);
2484 lpfc_sli_queue_setup(phba);
2485
2486 retval = lpfc_mem_alloc(phba);
2487 if (retval) {
2488 error = retval;
2489 goto out_free_hbqslimp;
2490 }
2491
2492 /* Initialize and populate the iocb list per host. */
2493 INIT_LIST_HEAD(&phba->lpfc_iocb_list);
2494 for (i = 0; i < LPFC_IOCB_LIST_CNT; i++) {
2495 iocbq_entry = kzalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL);
2496 if (iocbq_entry == NULL) {
2497 printk(KERN_ERR "%s: only allocated %d iocbs of "
2498 "expected %d count. Unloading driver.\n",
2499 __func__, i, LPFC_IOCB_LIST_CNT);
2500 error = -ENOMEM;
2501 goto out_free_iocbq;
2502 }
2503
2504 iotag = lpfc_sli_next_iotag(phba, iocbq_entry);
2505 if (iotag == 0) {
2506 kfree (iocbq_entry);
2507 printk(KERN_ERR "%s: failed to allocate IOTAG. "
2508 "Unloading driver.\n",
2509 __func__);
2510 error = -ENOMEM;
2511 goto out_free_iocbq;
2512 }
2513
2514 spin_lock_irq(&phba->hbalock);
2515 list_add(&iocbq_entry->list, &phba->lpfc_iocb_list);
2516 phba->total_iocbq_bufs++;
2517 spin_unlock_irq(&phba->hbalock);
2518 }
2519
2520 /* Initialize HBA structure */
2521 phba->fc_edtov = FF_DEF_EDTOV;
2522 phba->fc_ratov = FF_DEF_RATOV;
2523 phba->fc_altov = FF_DEF_ALTOV;
2524 phba->fc_arbtov = FF_DEF_ARBTOV;
2525
2526 INIT_LIST_HEAD(&phba->work_list);
2527 phba->work_ha_mask = (HA_ERATT | HA_MBATT | HA_LATT);
2528 phba->work_ha_mask |= (HA_RXMASK << (LPFC_ELS_RING * 4));
2529
2530 /* Initialize the wait queue head for the kernel thread */
2531 init_waitqueue_head(&phba->work_waitq);
2532
2533 /* Startup the kernel thread for this host adapter. */
2534 phba->worker_thread = kthread_run(lpfc_do_work, phba,
2535 "lpfc_worker_%d", phba->brd_no);
2536 if (IS_ERR(phba->worker_thread)) {
2537 error = PTR_ERR(phba->worker_thread);
2538 goto out_free_iocbq;
2539 }
2540
2541 /* Initialize the list of scsi buffers used by driver for scsi IO. */
2542 spin_lock_init(&phba->scsi_buf_list_lock);
2543 INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list);
2544
2545 /* Initialize list of fabric iocbs */
2546 INIT_LIST_HEAD(&phba->fabric_iocb_list);
2547
2548 /* Initialize list to save ELS buffers */
2549 INIT_LIST_HEAD(&phba->elsbuf);
2550
2551 vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev);
2552 if (!vport)
2553 goto out_kthread_stop;
2554
2555 shost = lpfc_shost_from_vport(vport);
2556 phba->pport = vport;
2557 lpfc_debugfs_initialize(vport);
2558
2559 pci_set_drvdata(pdev, shost);
2560 phba->intr_type = NONE;
2561
2562 phba->MBslimaddr = phba->slim_memmap_p;
2563 phba->HAregaddr = phba->ctrl_regs_memmap_p + HA_REG_OFFSET;
2564 phba->CAregaddr = phba->ctrl_regs_memmap_p + CA_REG_OFFSET;
2565 phba->HSregaddr = phba->ctrl_regs_memmap_p + HS_REG_OFFSET;
2566 phba->HCregaddr = phba->ctrl_regs_memmap_p + HC_REG_OFFSET;
2567
2568 /* Configure and enable interrupt */
2569 if (phba->cfg_use_msi == 2) {
2570 /* Need to issue conf_port mbox cmd before conf_msi mbox cmd */
2571 error = lpfc_sli_config_port(phba, 3);
2572 if (error)
2573 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2574 "0427 Firmware not capable of SLI 3 mode.\n");
2575 else {
2576 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2577 "0426 Firmware capable of SLI 3 mode.\n");
2578 /* Now, try to enable MSI-X interrupt mode */
2579 error = lpfc_enable_msix(phba);
2580 if (!error) {
2581 phba->intr_type = MSIX;
2582 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2583 "0430 enable MSI-X mode.\n");
2584 }
2585 }
2586 }
2587
2588 /* Fallback to MSI if MSI-X initialization failed */
2589 if (phba->cfg_use_msi >= 1 && phba->intr_type == NONE) {
2590 retval = pci_enable_msi(phba->pcidev);
2591 if (!retval) {
2592 phba->intr_type = MSI;
2593 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2594 "0473 enable MSI mode.\n");
2595 } else
2596 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2597 "0452 enable IRQ mode.\n");
2598 }
2599
2600 /* MSI-X is the only case the doesn't need to call request_irq */
2601 if (phba->intr_type != MSIX) {
2602 retval = request_irq(phba->pcidev->irq, lpfc_intr_handler,
2603 IRQF_SHARED, LPFC_DRIVER_NAME, phba);
2604 if (retval) {
2605 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0451 Enable "
2606 "interrupt handler failed\n");
2607 error = retval;
2608 goto out_disable_msi;
2609 } else if (phba->intr_type != MSI)
2610 phba->intr_type = INTx;
2611 }
2612
2613 if (lpfc_alloc_sysfs_attr(vport)) {
2614 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2615 "1476 Failed to allocate sysfs attr\n");
2616 error = -ENOMEM;
2617 goto out_free_irq;
2618 }
2619
2620 if (lpfc_sli_hba_setup(phba)) {
2621 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2622 "1477 Failed to set up hba\n");
2623 error = -ENODEV;
2624 goto out_remove_device;
2625 }
2626
2627 /*
2628 * hba setup may have changed the hba_queue_depth so we need to adjust
2629 * the value of can_queue.
2630 */
2631 shost->can_queue = phba->cfg_hba_queue_depth - 10;
2632
2633 lpfc_host_attrib_init(shost);
2634
2635 if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
2636 spin_lock_irq(shost->host_lock);
2637 lpfc_poll_start_timer(phba);
2638 spin_unlock_irq(shost->host_lock);
2639 }
2640
2641 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2642 "0428 Perform SCSI scan\n");
2643 /* Send board arrival event to upper layer */
2644 adapter_event.event_type = FC_REG_ADAPTER_EVENT;
2645 adapter_event.subcategory = LPFC_EVENT_ARRIVAL;
2646 fc_host_post_vendor_event(shost, fc_get_event_number(),
2647 sizeof(adapter_event),
2648 (char *) &adapter_event,
2649 SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
2650
2651 scsi_scan_host(shost);
2652
2653 return 0;
2654
2655 out_remove_device:
2656 lpfc_free_sysfs_attr(vport);
2657 spin_lock_irq(shost->host_lock);
2658 vport->load_flag |= FC_UNLOADING;
2659 spin_unlock_irq(shost->host_lock);
2660 out_free_irq:
2661 lpfc_stop_phba_timers(phba);
2662 phba->pport->work_port_events = 0;
2663
2664 if (phba->intr_type == MSIX)
2665 lpfc_disable_msix(phba);
2666 else
2667 free_irq(phba->pcidev->irq, phba);
2668
2669 out_disable_msi:
2670 if (phba->intr_type == MSI)
2671 pci_disable_msi(phba->pcidev);
2672 destroy_port(vport);
2673 out_kthread_stop:
2674 kthread_stop(phba->worker_thread);
2675 out_free_iocbq:
2676 list_for_each_entry_safe(iocbq_entry, iocbq_next,
2677 &phba->lpfc_iocb_list, list) {
2678 kfree(iocbq_entry);
2679 phba->total_iocbq_bufs--;
2680 }
2681 lpfc_mem_free(phba);
2682 out_free_hbqslimp:
2683 dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
2684 phba->hbqslimp.virt, phba->hbqslimp.phys);
2685 out_free_slim:
2686 dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
2687 phba->slim2p.virt, phba->slim2p.phys);
2688 out_iounmap:
2689 iounmap(phba->ctrl_regs_memmap_p);
2690 out_iounmap_slim:
2691 iounmap(phba->slim_memmap_p);
2692 out_idr_remove:
2693 idr_remove(&lpfc_hba_index, phba->brd_no);
2694 out_free_phba:
2695 kfree(phba);
2696 out_release_regions:
2697 pci_release_selected_regions(pdev, bars);
2698 out_disable_device:
2699 pci_disable_device(pdev);
2700 out:
2701 pci_set_drvdata(pdev, NULL);
2702 if (shost)
2703 scsi_host_put(shost);
2704 return error;
2705 }
2706
2707 /**
2708 * lpfc_pci_remove_one: lpfc PCI func to unregister device from PCI subsystem.
2709 * @pdev: pointer to PCI device
2710 *
2711 * This routine is to be registered to the kernel's PCI subsystem. When an
2712 * Emulex HBA is removed from PCI bus. It perform all the necessary cleanup
2713 * for the HBA device to be removed from the PCI subsystem properly.
2714 **/
2715 static void __devexit
2716 lpfc_pci_remove_one(struct pci_dev *pdev)
2717 {
2718 struct Scsi_Host *shost = pci_get_drvdata(pdev);
2719 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2720 struct lpfc_hba *phba = vport->phba;
2721 int bars = pci_select_bars(pdev, IORESOURCE_MEM);
2722
2723 spin_lock_irq(&phba->hbalock);
2724 vport->load_flag |= FC_UNLOADING;
2725 spin_unlock_irq(&phba->hbalock);
2726
2727 kfree(vport->vname);
2728 lpfc_free_sysfs_attr(vport);
2729
2730 kthread_stop(phba->worker_thread);
2731
2732 fc_remove_host(shost);
2733 scsi_remove_host(shost);
2734 lpfc_cleanup(vport);
2735
2736 /*
2737 * Bring down the SLI Layer. This step disable all interrupts,
2738 * clears the rings, discards all mailbox commands, and resets
2739 * the HBA.
2740 */
2741 lpfc_sli_hba_down(phba);
2742 lpfc_sli_brdrestart(phba);
2743
2744 lpfc_stop_phba_timers(phba);
2745 spin_lock_irq(&phba->hbalock);
2746 list_del_init(&vport->listentry);
2747 spin_unlock_irq(&phba->hbalock);
2748
2749 lpfc_debugfs_terminate(vport);
2750
2751 if (phba->intr_type == MSIX)
2752 lpfc_disable_msix(phba);
2753 else {
2754 free_irq(phba->pcidev->irq, phba);
2755 if (phba->intr_type == MSI)
2756 pci_disable_msi(phba->pcidev);
2757 }
2758
2759 pci_set_drvdata(pdev, NULL);
2760 scsi_host_put(shost);
2761
2762 /*
2763 * Call scsi_free before mem_free since scsi bufs are released to their
2764 * corresponding pools here.
2765 */
2766 lpfc_scsi_free(phba);
2767 lpfc_mem_free(phba);
2768
2769 dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
2770 phba->hbqslimp.virt, phba->hbqslimp.phys);
2771
2772 /* Free resources associated with SLI2 interface */
2773 dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
2774 phba->slim2p.virt, phba->slim2p.phys);
2775
2776 /* unmap adapter SLIM and Control Registers */
2777 iounmap(phba->ctrl_regs_memmap_p);
2778 iounmap(phba->slim_memmap_p);
2779
2780 idr_remove(&lpfc_hba_index, phba->brd_no);
2781
2782 kfree(phba);
2783
2784 pci_release_selected_regions(pdev, bars);
2785 pci_disable_device(pdev);
2786 }
2787
2788 /**
2789 * lpfc_io_error_detected: Driver method for handling PCI I/O error detected.
2790 * @pdev: pointer to PCI device.
2791 * @state: the current PCI connection state.
2792 *
2793 * This routine is registered to the PCI subsystem for error handling. This
2794 * function is called by the PCI subsystem after a PCI bus error affecting
2795 * this device has been detected. When this function is invoked, it will
2796 * need to stop all the I/Os and interrupt(s) to the device. Once that is
2797 * done, it will return PCI_ERS_RESULT_NEED_RESET for the PCI subsystem to
2798 * perform proper recovery as desired.
2799 *
2800 * Return codes
2801 * PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
2802 * PCI_ERS_RESULT_DISCONNECT - device could not be recovered
2803 **/
2804 static pci_ers_result_t lpfc_io_error_detected(struct pci_dev *pdev,
2805 pci_channel_state_t state)
2806 {
2807 struct Scsi_Host *shost = pci_get_drvdata(pdev);
2808 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2809 struct lpfc_sli *psli = &phba->sli;
2810 struct lpfc_sli_ring *pring;
2811
2812 if (state == pci_channel_io_perm_failure) {
2813 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2814 "0472 PCI channel I/O permanent failure\n");
2815 /* Block all SCSI devices' I/Os on the host */
2816 lpfc_scsi_dev_block(phba);
2817 /* Clean up all driver's outstanding SCSI I/Os */
2818 lpfc_sli_flush_fcp_rings(phba);
2819 return PCI_ERS_RESULT_DISCONNECT;
2820 }
2821
2822 pci_disable_device(pdev);
2823 /*
2824 * There may be I/Os dropped by the firmware.
2825 * Error iocb (I/O) on txcmplq and let the SCSI layer
2826 * retry it after re-establishing link.
2827 */
2828 pring = &psli->ring[psli->fcp_ring];
2829 lpfc_sli_abort_iocb_ring(phba, pring);
2830
2831 if (phba->intr_type == MSIX)
2832 lpfc_disable_msix(phba);
2833 else {
2834 free_irq(phba->pcidev->irq, phba);
2835 if (phba->intr_type == MSI)
2836 pci_disable_msi(phba->pcidev);
2837 }
2838
2839 /* Request a slot reset. */
2840 return PCI_ERS_RESULT_NEED_RESET;
2841 }
2842
2843 /**
2844 * lpfc_io_slot_reset: Restart a PCI device from scratch.
2845 * @pdev: pointer to PCI device.
2846 *
2847 * This routine is registered to the PCI subsystem for error handling. This is
2848 * called after PCI bus has been reset to restart the PCI card from scratch,
2849 * as if from a cold-boot. During the PCI subsystem error recovery, after the
2850 * driver returns PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform
2851 * proper error recovery and then call this routine before calling the .resume
2852 * method to recover the device. This function will initialize the HBA device,
2853 * enable the interrupt, but it will just put the HBA to offline state without
2854 * passing any I/O traffic.
2855 *
2856 * Return codes
2857 * PCI_ERS_RESULT_RECOVERED - the device has been recovered
2858 * PCI_ERS_RESULT_DISCONNECT - device could not be recovered
2859 */
2860 static pci_ers_result_t lpfc_io_slot_reset(struct pci_dev *pdev)
2861 {
2862 struct Scsi_Host *shost = pci_get_drvdata(pdev);
2863 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2864 struct lpfc_sli *psli = &phba->sli;
2865 int error, retval;
2866
2867 dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
2868 if (pci_enable_device_mem(pdev)) {
2869 printk(KERN_ERR "lpfc: Cannot re-enable "
2870 "PCI device after reset.\n");
2871 return PCI_ERS_RESULT_DISCONNECT;
2872 }
2873
2874 pci_set_master(pdev);
2875
2876 spin_lock_irq(&phba->hbalock);
2877 psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
2878 spin_unlock_irq(&phba->hbalock);
2879
2880 /* Enable configured interrupt method */
2881 phba->intr_type = NONE;
2882 if (phba->cfg_use_msi == 2) {
2883 /* Need to issue conf_port mbox cmd before conf_msi mbox cmd */
2884 error = lpfc_sli_config_port(phba, 3);
2885 if (error)
2886 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2887 "0478 Firmware not capable of SLI 3 mode.\n");
2888 else {
2889 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2890 "0479 Firmware capable of SLI 3 mode.\n");
2891 /* Now, try to enable MSI-X interrupt mode */
2892 error = lpfc_enable_msix(phba);
2893 if (!error) {
2894 phba->intr_type = MSIX;
2895 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2896 "0480 enable MSI-X mode.\n");
2897 }
2898 }
2899 }
2900
2901 /* Fallback to MSI if MSI-X initialization failed */
2902 if (phba->cfg_use_msi >= 1 && phba->intr_type == NONE) {
2903 retval = pci_enable_msi(phba->pcidev);
2904 if (!retval) {
2905 phba->intr_type = MSI;
2906 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2907 "0481 enable MSI mode.\n");
2908 } else
2909 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2910 "0470 enable IRQ mode.\n");
2911 }
2912
2913 /* MSI-X is the only case the doesn't need to call request_irq */
2914 if (phba->intr_type != MSIX) {
2915 retval = request_irq(phba->pcidev->irq, lpfc_intr_handler,
2916 IRQF_SHARED, LPFC_DRIVER_NAME, phba);
2917 if (retval) {
2918 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2919 "0471 Enable interrupt handler "
2920 "failed\n");
2921 } else if (phba->intr_type != MSI)
2922 phba->intr_type = INTx;
2923 }
2924
2925 /* Take device offline; this will perform cleanup */
2926 lpfc_offline(phba);
2927 lpfc_sli_brdrestart(phba);
2928
2929 return PCI_ERS_RESULT_RECOVERED;
2930 }
2931
2932 /**
2933 * lpfc_io_resume: Resume PCI I/O operation.
2934 * @pdev: pointer to PCI device
2935 *
2936 * This routine is registered to the PCI subsystem for error handling. It is
2937 * called when kernel error recovery tells the lpfc driver that it is ok to
2938 * resume normal PCI operation after PCI bus error recovery. After this call,
2939 * traffic can start to flow from this device again.
2940 */
2941 static void lpfc_io_resume(struct pci_dev *pdev)
2942 {
2943 struct Scsi_Host *shost = pci_get_drvdata(pdev);
2944 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2945
2946 lpfc_online(phba);
2947 }
2948
2949 static struct pci_device_id lpfc_id_table[] = {
2950 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_VIPER,
2951 PCI_ANY_ID, PCI_ANY_ID, },
2952 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_FIREFLY,
2953 PCI_ANY_ID, PCI_ANY_ID, },
2954 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_THOR,
2955 PCI_ANY_ID, PCI_ANY_ID, },
2956 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PEGASUS,
2957 PCI_ANY_ID, PCI_ANY_ID, },
2958 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_CENTAUR,
2959 PCI_ANY_ID, PCI_ANY_ID, },
2960 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_DRAGONFLY,
2961 PCI_ANY_ID, PCI_ANY_ID, },
2962 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SUPERFLY,
2963 PCI_ANY_ID, PCI_ANY_ID, },
2964 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_RFLY,
2965 PCI_ANY_ID, PCI_ANY_ID, },
2966 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PFLY,
2967 PCI_ANY_ID, PCI_ANY_ID, },
2968 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE,
2969 PCI_ANY_ID, PCI_ANY_ID, },
2970 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE_SCSP,
2971 PCI_ANY_ID, PCI_ANY_ID, },
2972 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE_DCSP,
2973 PCI_ANY_ID, PCI_ANY_ID, },
2974 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS,
2975 PCI_ANY_ID, PCI_ANY_ID, },
2976 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS_SCSP,
2977 PCI_ANY_ID, PCI_ANY_ID, },
2978 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS_DCSP,
2979 PCI_ANY_ID, PCI_ANY_ID, },
2980 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BMID,
2981 PCI_ANY_ID, PCI_ANY_ID, },
2982 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BSMB,
2983 PCI_ANY_ID, PCI_ANY_ID, },
2984 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR,
2985 PCI_ANY_ID, PCI_ANY_ID, },
2986 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HORNET,
2987 PCI_ANY_ID, PCI_ANY_ID, },
2988 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_SCSP,
2989 PCI_ANY_ID, PCI_ANY_ID, },
2990 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_DCSP,
2991 PCI_ANY_ID, PCI_ANY_ID, },
2992 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZMID,
2993 PCI_ANY_ID, PCI_ANY_ID, },
2994 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZSMB,
2995 PCI_ANY_ID, PCI_ANY_ID, },
2996 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_TFLY,
2997 PCI_ANY_ID, PCI_ANY_ID, },
2998 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP101,
2999 PCI_ANY_ID, PCI_ANY_ID, },
3000 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP10000S,
3001 PCI_ANY_ID, PCI_ANY_ID, },
3002 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP11000S,
3003 PCI_ANY_ID, PCI_ANY_ID, },
3004 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LPE11000S,
3005 PCI_ANY_ID, PCI_ANY_ID, },
3006 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT,
3007 PCI_ANY_ID, PCI_ANY_ID, },
3008 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_MID,
3009 PCI_ANY_ID, PCI_ANY_ID, },
3010 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_SMB,
3011 PCI_ANY_ID, PCI_ANY_ID, },
3012 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_DCSP,
3013 PCI_ANY_ID, PCI_ANY_ID, },
3014 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_SCSP,
3015 PCI_ANY_ID, PCI_ANY_ID, },
3016 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_S,
3017 PCI_ANY_ID, PCI_ANY_ID, },
3018 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_VF,
3019 PCI_ANY_ID, PCI_ANY_ID, },
3020 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_PF,
3021 PCI_ANY_ID, PCI_ANY_ID, },
3022 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_S,
3023 PCI_ANY_ID, PCI_ANY_ID, },
3024 { 0 }
3025 };
3026
3027 MODULE_DEVICE_TABLE(pci, lpfc_id_table);
3028
3029 static struct pci_error_handlers lpfc_err_handler = {
3030 .error_detected = lpfc_io_error_detected,
3031 .slot_reset = lpfc_io_slot_reset,
3032 .resume = lpfc_io_resume,
3033 };
3034
3035 static struct pci_driver lpfc_driver = {
3036 .name = LPFC_DRIVER_NAME,
3037 .id_table = lpfc_id_table,
3038 .probe = lpfc_pci_probe_one,
3039 .remove = __devexit_p(lpfc_pci_remove_one),
3040 .err_handler = &lpfc_err_handler,
3041 };
3042
3043 /**
3044 * lpfc_init: lpfc module initialization routine.
3045 *
3046 * This routine is to be invoked when the lpfc module is loaded into the
3047 * kernel. The special kernel macro module_init() is used to indicate the
3048 * role of this routine to the kernel as lpfc module entry point.
3049 *
3050 * Return codes
3051 * 0 - successful
3052 * -ENOMEM - FC attach transport failed
3053 * all others - failed
3054 */
3055 static int __init
3056 lpfc_init(void)
3057 {
3058 int error = 0;
3059
3060 printk(LPFC_MODULE_DESC "\n");
3061 printk(LPFC_COPYRIGHT "\n");
3062
3063 if (lpfc_enable_npiv) {
3064 lpfc_transport_functions.vport_create = lpfc_vport_create;
3065 lpfc_transport_functions.vport_delete = lpfc_vport_delete;
3066 }
3067 lpfc_transport_template =
3068 fc_attach_transport(&lpfc_transport_functions);
3069 if (lpfc_transport_template == NULL)
3070 return -ENOMEM;
3071 if (lpfc_enable_npiv) {
3072 lpfc_vport_transport_template =
3073 fc_attach_transport(&lpfc_vport_transport_functions);
3074 if (lpfc_vport_transport_template == NULL) {
3075 fc_release_transport(lpfc_transport_template);
3076 return -ENOMEM;
3077 }
3078 }
3079 error = pci_register_driver(&lpfc_driver);
3080 if (error) {
3081 fc_release_transport(lpfc_transport_template);
3082 if (lpfc_enable_npiv)
3083 fc_release_transport(lpfc_vport_transport_template);
3084 }
3085
3086 return error;
3087 }
3088
3089 /**
3090 * lpfc_exit: lpfc module removal routine.
3091 *
3092 * This routine is invoked when the lpfc module is removed from the kernel.
3093 * The special kernel macro module_exit() is used to indicate the role of
3094 * this routine to the kernel as lpfc module exit point.
3095 */
3096 static void __exit
3097 lpfc_exit(void)
3098 {
3099 pci_unregister_driver(&lpfc_driver);
3100 fc_release_transport(lpfc_transport_template);
3101 if (lpfc_enable_npiv)
3102 fc_release_transport(lpfc_vport_transport_template);
3103 }
3104
3105 module_init(lpfc_init);
3106 module_exit(lpfc_exit);
3107 MODULE_LICENSE("GPL");
3108 MODULE_DESCRIPTION(LPFC_MODULE_DESC);
3109 MODULE_AUTHOR("Emulex Corporation - tech.support@emulex.com");
3110 MODULE_VERSION("0:" LPFC_DRIVER_VERSION);
Linus' kernel tree