Version:  2.0.40 2.2.26 2.4.37 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8

Linux/drivers/scsi/lpfc/lpfc_init.c

  1 /*******************************************************************
  2  * This file is part of the Emulex Linux Device Driver for         *
  3  * Fibre Channel Host Bus Adapters.                                *
  4  * Copyright (C) 2004-2016 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/module.h>
 28 #include <linux/kthread.h>
 29 #include <linux/pci.h>
 30 #include <linux/spinlock.h>
 31 #include <linux/ctype.h>
 32 #include <linux/aer.h>
 33 #include <linux/slab.h>
 34 #include <linux/firmware.h>
 35 #include <linux/miscdevice.h>
 36 #include <linux/percpu.h>
 37 
 38 #include <scsi/scsi.h>
 39 #include <scsi/scsi_device.h>
 40 #include <scsi/scsi_host.h>
 41 #include <scsi/scsi_transport_fc.h>
 42 
 43 #include "lpfc_hw4.h"
 44 #include "lpfc_hw.h"
 45 #include "lpfc_sli.h"
 46 #include "lpfc_sli4.h"
 47 #include "lpfc_nl.h"
 48 #include "lpfc_disc.h"
 49 #include "lpfc_scsi.h"
 50 #include "lpfc.h"
 51 #include "lpfc_logmsg.h"
 52 #include "lpfc_crtn.h"
 53 #include "lpfc_vport.h"
 54 #include "lpfc_version.h"
 55 #include "lpfc_ids.h"
 56 
 57 char *_dump_buf_data;
 58 unsigned long _dump_buf_data_order;
 59 char *_dump_buf_dif;
 60 unsigned long _dump_buf_dif_order;
 61 spinlock_t _dump_buf_lock;
 62 
 63 /* Used when mapping IRQ vectors in a driver centric manner */
 64 uint16_t *lpfc_used_cpu;
 65 uint32_t lpfc_present_cpu;
 66 
 67 static void lpfc_get_hba_model_desc(struct lpfc_hba *, uint8_t *, uint8_t *);
 68 static int lpfc_post_rcv_buf(struct lpfc_hba *);
 69 static int lpfc_sli4_queue_verify(struct lpfc_hba *);
 70 static int lpfc_create_bootstrap_mbox(struct lpfc_hba *);
 71 static int lpfc_setup_endian_order(struct lpfc_hba *);
 72 static void lpfc_destroy_bootstrap_mbox(struct lpfc_hba *);
 73 static void lpfc_free_els_sgl_list(struct lpfc_hba *);
 74 static void lpfc_init_sgl_list(struct lpfc_hba *);
 75 static int lpfc_init_active_sgl_array(struct lpfc_hba *);
 76 static void lpfc_free_active_sgl(struct lpfc_hba *);
 77 static int lpfc_hba_down_post_s3(struct lpfc_hba *phba);
 78 static int lpfc_hba_down_post_s4(struct lpfc_hba *phba);
 79 static int lpfc_sli4_cq_event_pool_create(struct lpfc_hba *);
 80 static void lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *);
 81 static void lpfc_sli4_cq_event_release_all(struct lpfc_hba *);
 82 static void lpfc_sli4_disable_intr(struct lpfc_hba *);
 83 static uint32_t lpfc_sli4_enable_intr(struct lpfc_hba *, uint32_t);
 84 static void lpfc_sli4_oas_verify(struct lpfc_hba *phba);
 85 
 86 static struct scsi_transport_template *lpfc_transport_template = NULL;
 87 static struct scsi_transport_template *lpfc_vport_transport_template = NULL;
 88 static DEFINE_IDR(lpfc_hba_index);
 89 
 90 /**
 91  * lpfc_config_port_prep - Perform lpfc initialization prior to config port
 92  * @phba: pointer to lpfc hba data structure.
 93  *
 94  * This routine will do LPFC initialization prior to issuing the CONFIG_PORT
 95  * mailbox command. It retrieves the revision information from the HBA and
 96  * collects the Vital Product Data (VPD) about the HBA for preparing the
 97  * configuration of the HBA.
 98  *
 99  * Return codes:
100  *   0 - success.
101  *   -ERESTART - requests the SLI layer to reset the HBA and try again.
102  *   Any other value - indicates an error.
103  **/
104 int
105 lpfc_config_port_prep(struct lpfc_hba *phba)
106 {
107         lpfc_vpd_t *vp = &phba->vpd;
108         int i = 0, rc;
109         LPFC_MBOXQ_t *pmb;
110         MAILBOX_t *mb;
111         char *lpfc_vpd_data = NULL;
112         uint16_t offset = 0;
113         static char licensed[56] =
114                     "key unlock for use with gnu public licensed code only\0";
115         static int init_key = 1;
116 
117         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
118         if (!pmb) {
119                 phba->link_state = LPFC_HBA_ERROR;
120                 return -ENOMEM;
121         }
122 
123         mb = &pmb->u.mb;
124         phba->link_state = LPFC_INIT_MBX_CMDS;
125 
126         if (lpfc_is_LC_HBA(phba->pcidev->device)) {
127                 if (init_key) {
128                         uint32_t *ptext = (uint32_t *) licensed;
129 
130                         for (i = 0; i < 56; i += sizeof (uint32_t), ptext++)
131                                 *ptext = cpu_to_be32(*ptext);
132                         init_key = 0;
133                 }
134 
135                 lpfc_read_nv(phba, pmb);
136                 memset((char*)mb->un.varRDnvp.rsvd3, 0,
137                         sizeof (mb->un.varRDnvp.rsvd3));
138                 memcpy((char*)mb->un.varRDnvp.rsvd3, licensed,
139                          sizeof (licensed));
140 
141                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
142 
143                 if (rc != MBX_SUCCESS) {
144                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
145                                         "0324 Config Port initialization "
146                                         "error, mbxCmd x%x READ_NVPARM, "
147                                         "mbxStatus x%x\n",
148                                         mb->mbxCommand, mb->mbxStatus);
149                         mempool_free(pmb, phba->mbox_mem_pool);
150                         return -ERESTART;
151                 }
152                 memcpy(phba->wwnn, (char *)mb->un.varRDnvp.nodename,
153                        sizeof(phba->wwnn));
154                 memcpy(phba->wwpn, (char *)mb->un.varRDnvp.portname,
155                        sizeof(phba->wwpn));
156         }
157 
158         phba->sli3_options = 0x0;
159 
160         /* Setup and issue mailbox READ REV command */
161         lpfc_read_rev(phba, pmb);
162         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
163         if (rc != MBX_SUCCESS) {
164                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
165                                 "0439 Adapter failed to init, mbxCmd x%x "
166                                 "READ_REV, mbxStatus x%x\n",
167                                 mb->mbxCommand, mb->mbxStatus);
168                 mempool_free( pmb, phba->mbox_mem_pool);
169                 return -ERESTART;
170         }
171 
172 
173         /*
174          * The value of rr must be 1 since the driver set the cv field to 1.
175          * This setting requires the FW to set all revision fields.
176          */
177         if (mb->un.varRdRev.rr == 0) {
178                 vp->rev.rBit = 0;
179                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
180                                 "0440 Adapter failed to init, READ_REV has "
181                                 "missing revision information.\n");
182                 mempool_free(pmb, phba->mbox_mem_pool);
183                 return -ERESTART;
184         }
185 
186         if (phba->sli_rev == 3 && !mb->un.varRdRev.v3rsp) {
187                 mempool_free(pmb, phba->mbox_mem_pool);
188                 return -EINVAL;
189         }
190 
191         /* Save information as VPD data */
192         vp->rev.rBit = 1;
193         memcpy(&vp->sli3Feat, &mb->un.varRdRev.sli3Feat, sizeof(uint32_t));
194         vp->rev.sli1FwRev = mb->un.varRdRev.sli1FwRev;
195         memcpy(vp->rev.sli1FwName, (char*) mb->un.varRdRev.sli1FwName, 16);
196         vp->rev.sli2FwRev = mb->un.varRdRev.sli2FwRev;
197         memcpy(vp->rev.sli2FwName, (char *) mb->un.varRdRev.sli2FwName, 16);
198         vp->rev.biuRev = mb->un.varRdRev.biuRev;
199         vp->rev.smRev = mb->un.varRdRev.smRev;
200         vp->rev.smFwRev = mb->un.varRdRev.un.smFwRev;
201         vp->rev.endecRev = mb->un.varRdRev.endecRev;
202         vp->rev.fcphHigh = mb->un.varRdRev.fcphHigh;
203         vp->rev.fcphLow = mb->un.varRdRev.fcphLow;
204         vp->rev.feaLevelHigh = mb->un.varRdRev.feaLevelHigh;
205         vp->rev.feaLevelLow = mb->un.varRdRev.feaLevelLow;
206         vp->rev.postKernRev = mb->un.varRdRev.postKernRev;
207         vp->rev.opFwRev = mb->un.varRdRev.opFwRev;
208 
209         /* If the sli feature level is less then 9, we must
210          * tear down all RPIs and VPIs on link down if NPIV
211          * is enabled.
212          */
213         if (vp->rev.feaLevelHigh < 9)
214                 phba->sli3_options |= LPFC_SLI3_VPORT_TEARDOWN;
215 
216         if (lpfc_is_LC_HBA(phba->pcidev->device))
217                 memcpy(phba->RandomData, (char *)&mb->un.varWords[24],
218                                                 sizeof (phba->RandomData));
219 
220         /* Get adapter VPD information */
221         lpfc_vpd_data = kmalloc(DMP_VPD_SIZE, GFP_KERNEL);
222         if (!lpfc_vpd_data)
223                 goto out_free_mbox;
224         do {
225                 lpfc_dump_mem(phba, pmb, offset, DMP_REGION_VPD);
226                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
227 
228                 if (rc != MBX_SUCCESS) {
229                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
230                                         "0441 VPD not present on adapter, "
231                                         "mbxCmd x%x DUMP VPD, mbxStatus x%x\n",
232                                         mb->mbxCommand, mb->mbxStatus);
233                         mb->un.varDmp.word_cnt = 0;
234                 }
235                 /* dump mem may return a zero when finished or we got a
236                  * mailbox error, either way we are done.
237                  */
238                 if (mb->un.varDmp.word_cnt == 0)
239                         break;
240                 if (mb->un.varDmp.word_cnt > DMP_VPD_SIZE - offset)
241                         mb->un.varDmp.word_cnt = DMP_VPD_SIZE - offset;
242                 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
243                                       lpfc_vpd_data + offset,
244                                       mb->un.varDmp.word_cnt);
245                 offset += mb->un.varDmp.word_cnt;
246         } while (mb->un.varDmp.word_cnt && offset < DMP_VPD_SIZE);
247         lpfc_parse_vpd(phba, lpfc_vpd_data, offset);
248 
249         kfree(lpfc_vpd_data);
250 out_free_mbox:
251         mempool_free(pmb, phba->mbox_mem_pool);
252         return 0;
253 }
254 
255 /**
256  * lpfc_config_async_cmpl - Completion handler for config async event mbox cmd
257  * @phba: pointer to lpfc hba data structure.
258  * @pmboxq: pointer to the driver internal queue element for mailbox command.
259  *
260  * This is the completion handler for driver's configuring asynchronous event
261  * mailbox command to the device. If the mailbox command returns successfully,
262  * it will set internal async event support flag to 1; otherwise, it will
263  * set internal async event support flag to 0.
264  **/
265 static void
266 lpfc_config_async_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
267 {
268         if (pmboxq->u.mb.mbxStatus == MBX_SUCCESS)
269                 phba->temp_sensor_support = 1;
270         else
271                 phba->temp_sensor_support = 0;
272         mempool_free(pmboxq, phba->mbox_mem_pool);
273         return;
274 }
275 
276 /**
277  * lpfc_dump_wakeup_param_cmpl - dump memory mailbox command completion handler
278  * @phba: pointer to lpfc hba data structure.
279  * @pmboxq: pointer to the driver internal queue element for mailbox command.
280  *
281  * This is the completion handler for dump mailbox command for getting
282  * wake up parameters. When this command complete, the response contain
283  * Option rom version of the HBA. This function translate the version number
284  * into a human readable string and store it in OptionROMVersion.
285  **/
286 static void
287 lpfc_dump_wakeup_param_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
288 {
289         struct prog_id *prg;
290         uint32_t prog_id_word;
291         char dist = ' ';
292         /* character array used for decoding dist type. */
293         char dist_char[] = "nabx";
294 
295         if (pmboxq->u.mb.mbxStatus != MBX_SUCCESS) {
296                 mempool_free(pmboxq, phba->mbox_mem_pool);
297                 return;
298         }
299 
300         prg = (struct prog_id *) &prog_id_word;
301 
302         /* word 7 contain option rom version */
303         prog_id_word = pmboxq->u.mb.un.varWords[7];
304 
305         /* Decode the Option rom version word to a readable string */
306         if (prg->dist < 4)
307                 dist = dist_char[prg->dist];
308 
309         if ((prg->dist == 3) && (prg->num == 0))
310                 snprintf(phba->OptionROMVersion, 32, "%d.%d%d",
311                         prg->ver, prg->rev, prg->lev);
312         else
313                 snprintf(phba->OptionROMVersion, 32, "%d.%d%d%c%d",
314                         prg->ver, prg->rev, prg->lev,
315                         dist, prg->num);
316         mempool_free(pmboxq, phba->mbox_mem_pool);
317         return;
318 }
319 
320 /**
321  * lpfc_update_vport_wwn - Updates the fc_nodename, fc_portname,
322  *      cfg_soft_wwnn, cfg_soft_wwpn
323  * @vport: pointer to lpfc vport data structure.
324  *
325  *
326  * Return codes
327  *   None.
328  **/
329 void
330 lpfc_update_vport_wwn(struct lpfc_vport *vport)
331 {
332         /* If the soft name exists then update it using the service params */
333         if (vport->phba->cfg_soft_wwnn)
334                 u64_to_wwn(vport->phba->cfg_soft_wwnn,
335                            vport->fc_sparam.nodeName.u.wwn);
336         if (vport->phba->cfg_soft_wwpn)
337                 u64_to_wwn(vport->phba->cfg_soft_wwpn,
338                            vport->fc_sparam.portName.u.wwn);
339 
340         /*
341          * If the name is empty or there exists a soft name
342          * then copy the service params name, otherwise use the fc name
343          */
344         if (vport->fc_nodename.u.wwn[0] == 0 || vport->phba->cfg_soft_wwnn)
345                 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
346                         sizeof(struct lpfc_name));
347         else
348                 memcpy(&vport->fc_sparam.nodeName, &vport->fc_nodename,
349                         sizeof(struct lpfc_name));
350 
351         if (vport->fc_portname.u.wwn[0] == 0 || vport->phba->cfg_soft_wwpn)
352                 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
353                         sizeof(struct lpfc_name));
354         else
355                 memcpy(&vport->fc_sparam.portName, &vport->fc_portname,
356                         sizeof(struct lpfc_name));
357 }
358 
359 /**
360  * lpfc_config_port_post - Perform lpfc initialization after config port
361  * @phba: pointer to lpfc hba data structure.
362  *
363  * This routine will do LPFC initialization after the CONFIG_PORT mailbox
364  * command call. It performs all internal resource and state setups on the
365  * port: post IOCB buffers, enable appropriate host interrupt attentions,
366  * ELS ring timers, etc.
367  *
368  * Return codes
369  *   0 - success.
370  *   Any other value - error.
371  **/
372 int
373 lpfc_config_port_post(struct lpfc_hba *phba)
374 {
375         struct lpfc_vport *vport = phba->pport;
376         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
377         LPFC_MBOXQ_t *pmb;
378         MAILBOX_t *mb;
379         struct lpfc_dmabuf *mp;
380         struct lpfc_sli *psli = &phba->sli;
381         uint32_t status, timeout;
382         int i, j;
383         int rc;
384 
385         spin_lock_irq(&phba->hbalock);
386         /*
387          * If the Config port completed correctly the HBA is not
388          * over heated any more.
389          */
390         if (phba->over_temp_state == HBA_OVER_TEMP)
391                 phba->over_temp_state = HBA_NORMAL_TEMP;
392         spin_unlock_irq(&phba->hbalock);
393 
394         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
395         if (!pmb) {
396                 phba->link_state = LPFC_HBA_ERROR;
397                 return -ENOMEM;
398         }
399         mb = &pmb->u.mb;
400 
401         /* Get login parameters for NID.  */
402         rc = lpfc_read_sparam(phba, pmb, 0);
403         if (rc) {
404                 mempool_free(pmb, phba->mbox_mem_pool);
405                 return -ENOMEM;
406         }
407 
408         pmb->vport = vport;
409         if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
410                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
411                                 "0448 Adapter failed init, mbxCmd x%x "
412                                 "READ_SPARM mbxStatus x%x\n",
413                                 mb->mbxCommand, mb->mbxStatus);
414                 phba->link_state = LPFC_HBA_ERROR;
415                 mp = (struct lpfc_dmabuf *) pmb->context1;
416                 mempool_free(pmb, phba->mbox_mem_pool);
417                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
418                 kfree(mp);
419                 return -EIO;
420         }
421 
422         mp = (struct lpfc_dmabuf *) pmb->context1;
423 
424         memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
425         lpfc_mbuf_free(phba, mp->virt, mp->phys);
426         kfree(mp);
427         pmb->context1 = NULL;
428         lpfc_update_vport_wwn(vport);
429 
430         /* Update the fc_host data structures with new wwn. */
431         fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
432         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
433         fc_host_max_npiv_vports(shost) = phba->max_vpi;
434 
435         /* If no serial number in VPD data, use low 6 bytes of WWNN */
436         /* This should be consolidated into parse_vpd ? - mr */
437         if (phba->SerialNumber[0] == 0) {
438                 uint8_t *outptr;
439 
440                 outptr = &vport->fc_nodename.u.s.IEEE[0];
441                 for (i = 0; i < 12; i++) {
442                         status = *outptr++;
443                         j = ((status & 0xf0) >> 4);
444                         if (j <= 9)
445                                 phba->SerialNumber[i] =
446                                     (char)((uint8_t) 0x30 + (uint8_t) j);
447                         else
448                                 phba->SerialNumber[i] =
449                                     (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
450                         i++;
451                         j = (status & 0xf);
452                         if (j <= 9)
453                                 phba->SerialNumber[i] =
454                                     (char)((uint8_t) 0x30 + (uint8_t) j);
455                         else
456                                 phba->SerialNumber[i] =
457                                     (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
458                 }
459         }
460 
461         lpfc_read_config(phba, pmb);
462         pmb->vport = vport;
463         if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
464                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
465                                 "0453 Adapter failed to init, mbxCmd x%x "
466                                 "READ_CONFIG, mbxStatus x%x\n",
467                                 mb->mbxCommand, mb->mbxStatus);
468                 phba->link_state = LPFC_HBA_ERROR;
469                 mempool_free( pmb, phba->mbox_mem_pool);
470                 return -EIO;
471         }
472 
473         /* Check if the port is disabled */
474         lpfc_sli_read_link_ste(phba);
475 
476         /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
477         i = (mb->un.varRdConfig.max_xri + 1);
478         if (phba->cfg_hba_queue_depth > i) {
479                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
480                                 "3359 HBA queue depth changed from %d to %d\n",
481                                 phba->cfg_hba_queue_depth, i);
482                 phba->cfg_hba_queue_depth = i;
483         }
484 
485         /* Reset the DFT_LUN_Q_DEPTH to (max xri >> 3)  */
486         i = (mb->un.varRdConfig.max_xri >> 3);
487         if (phba->pport->cfg_lun_queue_depth > i) {
488                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
489                                 "3360 LUN queue depth changed from %d to %d\n",
490                                 phba->pport->cfg_lun_queue_depth, i);
491                 phba->pport->cfg_lun_queue_depth = i;
492         }
493 
494         phba->lmt = mb->un.varRdConfig.lmt;
495 
496         /* Get the default values for Model Name and Description */
497         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
498 
499         phba->link_state = LPFC_LINK_DOWN;
500 
501         /* Only process IOCBs on ELS ring till hba_state is READY */
502         if (psli->ring[psli->extra_ring].sli.sli3.cmdringaddr)
503                 psli->ring[psli->extra_ring].flag |= LPFC_STOP_IOCB_EVENT;
504         if (psli->ring[psli->fcp_ring].sli.sli3.cmdringaddr)
505                 psli->ring[psli->fcp_ring].flag |= LPFC_STOP_IOCB_EVENT;
506         if (psli->ring[psli->next_ring].sli.sli3.cmdringaddr)
507                 psli->ring[psli->next_ring].flag |= LPFC_STOP_IOCB_EVENT;
508 
509         /* Post receive buffers for desired rings */
510         if (phba->sli_rev != 3)
511                 lpfc_post_rcv_buf(phba);
512 
513         /*
514          * Configure HBA MSI-X attention conditions to messages if MSI-X mode
515          */
516         if (phba->intr_type == MSIX) {
517                 rc = lpfc_config_msi(phba, pmb);
518                 if (rc) {
519                         mempool_free(pmb, phba->mbox_mem_pool);
520                         return -EIO;
521                 }
522                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
523                 if (rc != MBX_SUCCESS) {
524                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
525                                         "0352 Config MSI mailbox command "
526                                         "failed, mbxCmd x%x, mbxStatus x%x\n",
527                                         pmb->u.mb.mbxCommand,
528                                         pmb->u.mb.mbxStatus);
529                         mempool_free(pmb, phba->mbox_mem_pool);
530                         return -EIO;
531                 }
532         }
533 
534         spin_lock_irq(&phba->hbalock);
535         /* Initialize ERATT handling flag */
536         phba->hba_flag &= ~HBA_ERATT_HANDLED;
537 
538         /* Enable appropriate host interrupts */
539         if (lpfc_readl(phba->HCregaddr, &status)) {
540                 spin_unlock_irq(&phba->hbalock);
541                 return -EIO;
542         }
543         status |= HC_MBINT_ENA | HC_ERINT_ENA | HC_LAINT_ENA;
544         if (psli->num_rings > 0)
545                 status |= HC_R0INT_ENA;
546         if (psli->num_rings > 1)
547                 status |= HC_R1INT_ENA;
548         if (psli->num_rings > 2)
549                 status |= HC_R2INT_ENA;
550         if (psli->num_rings > 3)
551                 status |= HC_R3INT_ENA;
552 
553         if ((phba->cfg_poll & ENABLE_FCP_RING_POLLING) &&
554             (phba->cfg_poll & DISABLE_FCP_RING_INT))
555                 status &= ~(HC_R0INT_ENA);
556 
557         writel(status, phba->HCregaddr);
558         readl(phba->HCregaddr); /* flush */
559         spin_unlock_irq(&phba->hbalock);
560 
561         /* Set up ring-0 (ELS) timer */
562         timeout = phba->fc_ratov * 2;
563         mod_timer(&vport->els_tmofunc,
564                   jiffies + msecs_to_jiffies(1000 * timeout));
565         /* Set up heart beat (HB) timer */
566         mod_timer(&phba->hb_tmofunc,
567                   jiffies + msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
568         phba->hb_outstanding = 0;
569         phba->last_completion_time = jiffies;
570         /* Set up error attention (ERATT) polling timer */
571         mod_timer(&phba->eratt_poll,
572                   jiffies + msecs_to_jiffies(1000 * phba->eratt_poll_interval));
573 
574         if (phba->hba_flag & LINK_DISABLED) {
575                 lpfc_printf_log(phba,
576                         KERN_ERR, LOG_INIT,
577                         "2598 Adapter Link is disabled.\n");
578                 lpfc_down_link(phba, pmb);
579                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
580                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
581                 if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
582                         lpfc_printf_log(phba,
583                         KERN_ERR, LOG_INIT,
584                         "2599 Adapter failed to issue DOWN_LINK"
585                         " mbox command rc 0x%x\n", rc);
586 
587                         mempool_free(pmb, phba->mbox_mem_pool);
588                         return -EIO;
589                 }
590         } else if (phba->cfg_suppress_link_up == LPFC_INITIALIZE_LINK) {
591                 mempool_free(pmb, phba->mbox_mem_pool);
592                 rc = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);
593                 if (rc)
594                         return rc;
595         }
596         /* MBOX buffer will be freed in mbox compl */
597         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
598         if (!pmb) {
599                 phba->link_state = LPFC_HBA_ERROR;
600                 return -ENOMEM;
601         }
602 
603         lpfc_config_async(phba, pmb, LPFC_ELS_RING);
604         pmb->mbox_cmpl = lpfc_config_async_cmpl;
605         pmb->vport = phba->pport;
606         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
607 
608         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
609                 lpfc_printf_log(phba,
610                                 KERN_ERR,
611                                 LOG_INIT,
612                                 "0456 Adapter failed to issue "
613                                 "ASYNCEVT_ENABLE mbox status x%x\n",
614                                 rc);
615                 mempool_free(pmb, phba->mbox_mem_pool);
616         }
617 
618         /* Get Option rom version */
619         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
620         if (!pmb) {
621                 phba->link_state = LPFC_HBA_ERROR;
622                 return -ENOMEM;
623         }
624 
625         lpfc_dump_wakeup_param(phba, pmb);
626         pmb->mbox_cmpl = lpfc_dump_wakeup_param_cmpl;
627         pmb->vport = phba->pport;
628         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
629 
630         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
631                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0435 Adapter failed "
632                                 "to get Option ROM version status x%x\n", rc);
633                 mempool_free(pmb, phba->mbox_mem_pool);
634         }
635 
636         return 0;
637 }
638 
639 /**
640  * lpfc_hba_init_link - Initialize the FC link
641  * @phba: pointer to lpfc hba data structure.
642  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
643  *
644  * This routine will issue the INIT_LINK mailbox command call.
645  * It is available to other drivers through the lpfc_hba data
646  * structure for use as a delayed link up mechanism with the
647  * module parameter lpfc_suppress_link_up.
648  *
649  * Return code
650  *              0 - success
651  *              Any other value - error
652  **/
653 static int
654 lpfc_hba_init_link(struct lpfc_hba *phba, uint32_t flag)
655 {
656         return lpfc_hba_init_link_fc_topology(phba, phba->cfg_topology, flag);
657 }
658 
659 /**
660  * lpfc_hba_init_link_fc_topology - Initialize FC link with desired topology
661  * @phba: pointer to lpfc hba data structure.
662  * @fc_topology: desired fc topology.
663  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
664  *
665  * This routine will issue the INIT_LINK mailbox command call.
666  * It is available to other drivers through the lpfc_hba data
667  * structure for use as a delayed link up mechanism with the
668  * module parameter lpfc_suppress_link_up.
669  *
670  * Return code
671  *              0 - success
672  *              Any other value - error
673  **/
674 int
675 lpfc_hba_init_link_fc_topology(struct lpfc_hba *phba, uint32_t fc_topology,
676                                uint32_t flag)
677 {
678         struct lpfc_vport *vport = phba->pport;
679         LPFC_MBOXQ_t *pmb;
680         MAILBOX_t *mb;
681         int rc;
682 
683         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
684         if (!pmb) {
685                 phba->link_state = LPFC_HBA_ERROR;
686                 return -ENOMEM;
687         }
688         mb = &pmb->u.mb;
689         pmb->vport = vport;
690 
691         if ((phba->cfg_link_speed > LPFC_USER_LINK_SPEED_MAX) ||
692             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_1G) &&
693              !(phba->lmt & LMT_1Gb)) ||
694             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_2G) &&
695              !(phba->lmt & LMT_2Gb)) ||
696             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_4G) &&
697              !(phba->lmt & LMT_4Gb)) ||
698             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_8G) &&
699              !(phba->lmt & LMT_8Gb)) ||
700             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_10G) &&
701              !(phba->lmt & LMT_10Gb)) ||
702             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_16G) &&
703              !(phba->lmt & LMT_16Gb)) ||
704             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_32G) &&
705              !(phba->lmt & LMT_32Gb))) {
706                 /* Reset link speed to auto */
707                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
708                         "1302 Invalid speed for this board:%d "
709                         "Reset link speed to auto.\n",
710                         phba->cfg_link_speed);
711                         phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO;
712         }
713         lpfc_init_link(phba, pmb, fc_topology, phba->cfg_link_speed);
714         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
715         if (phba->sli_rev < LPFC_SLI_REV4)
716                 lpfc_set_loopback_flag(phba);
717         rc = lpfc_sli_issue_mbox(phba, pmb, flag);
718         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
719                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
720                         "0498 Adapter failed to init, mbxCmd x%x "
721                         "INIT_LINK, mbxStatus x%x\n",
722                         mb->mbxCommand, mb->mbxStatus);
723                 if (phba->sli_rev <= LPFC_SLI_REV3) {
724                         /* Clear all interrupt enable conditions */
725                         writel(0, phba->HCregaddr);
726                         readl(phba->HCregaddr); /* flush */
727                         /* Clear all pending interrupts */
728                         writel(0xffffffff, phba->HAregaddr);
729                         readl(phba->HAregaddr); /* flush */
730                 }
731                 phba->link_state = LPFC_HBA_ERROR;
732                 if (rc != MBX_BUSY || flag == MBX_POLL)
733                         mempool_free(pmb, phba->mbox_mem_pool);
734                 return -EIO;
735         }
736         phba->cfg_suppress_link_up = LPFC_INITIALIZE_LINK;
737         if (flag == MBX_POLL)
738                 mempool_free(pmb, phba->mbox_mem_pool);
739 
740         return 0;
741 }
742 
743 /**
744  * lpfc_hba_down_link - this routine downs the FC link
745  * @phba: pointer to lpfc hba data structure.
746  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
747  *
748  * This routine will issue the DOWN_LINK mailbox command call.
749  * It is available to other drivers through the lpfc_hba data
750  * structure for use to stop the link.
751  *
752  * Return code
753  *              0 - success
754  *              Any other value - error
755  **/
756 static int
757 lpfc_hba_down_link(struct lpfc_hba *phba, uint32_t flag)
758 {
759         LPFC_MBOXQ_t *pmb;
760         int rc;
761 
762         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
763         if (!pmb) {
764                 phba->link_state = LPFC_HBA_ERROR;
765                 return -ENOMEM;
766         }
767 
768         lpfc_printf_log(phba,
769                 KERN_ERR, LOG_INIT,
770                 "0491 Adapter Link is disabled.\n");
771         lpfc_down_link(phba, pmb);
772         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
773         rc = lpfc_sli_issue_mbox(phba, pmb, flag);
774         if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
775                 lpfc_printf_log(phba,
776                 KERN_ERR, LOG_INIT,
777                 "2522 Adapter failed to issue DOWN_LINK"
778                 " mbox command rc 0x%x\n", rc);
779 
780                 mempool_free(pmb, phba->mbox_mem_pool);
781                 return -EIO;
782         }
783         if (flag == MBX_POLL)
784                 mempool_free(pmb, phba->mbox_mem_pool);
785 
786         return 0;
787 }
788 
789 /**
790  * lpfc_hba_down_prep - Perform lpfc uninitialization prior to HBA reset
791  * @phba: pointer to lpfc HBA data structure.
792  *
793  * This routine will do LPFC uninitialization before the HBA is reset when
794  * bringing down the SLI Layer.
795  *
796  * Return codes
797  *   0 - success.
798  *   Any other value - error.
799  **/
800 int
801 lpfc_hba_down_prep(struct lpfc_hba *phba)
802 {
803         struct lpfc_vport **vports;
804         int i;
805 
806         if (phba->sli_rev <= LPFC_SLI_REV3) {
807                 /* Disable interrupts */
808                 writel(0, phba->HCregaddr);
809                 readl(phba->HCregaddr); /* flush */
810         }
811 
812         if (phba->pport->load_flag & FC_UNLOADING)
813                 lpfc_cleanup_discovery_resources(phba->pport);
814         else {
815                 vports = lpfc_create_vport_work_array(phba);
816                 if (vports != NULL)
817                         for (i = 0; i <= phba->max_vports &&
818                                 vports[i] != NULL; i++)
819                                 lpfc_cleanup_discovery_resources(vports[i]);
820                 lpfc_destroy_vport_work_array(phba, vports);
821         }
822         return 0;
823 }
824 
825 /**
826  * lpfc_sli4_free_sp_events - Cleanup sp_queue_events to free
827  * rspiocb which got deferred
828  *
829  * @phba: pointer to lpfc HBA data structure.
830  *
831  * This routine will cleanup completed slow path events after HBA is reset
832  * when bringing down the SLI Layer.
833  *
834  *
835  * Return codes
836  *   void.
837  **/
838 static void
839 lpfc_sli4_free_sp_events(struct lpfc_hba *phba)
840 {
841         struct lpfc_iocbq *rspiocbq;
842         struct hbq_dmabuf *dmabuf;
843         struct lpfc_cq_event *cq_event;
844 
845         spin_lock_irq(&phba->hbalock);
846         phba->hba_flag &= ~HBA_SP_QUEUE_EVT;
847         spin_unlock_irq(&phba->hbalock);
848 
849         while (!list_empty(&phba->sli4_hba.sp_queue_event)) {
850                 /* Get the response iocb from the head of work queue */
851                 spin_lock_irq(&phba->hbalock);
852                 list_remove_head(&phba->sli4_hba.sp_queue_event,
853                                  cq_event, struct lpfc_cq_event, list);
854                 spin_unlock_irq(&phba->hbalock);
855 
856                 switch (bf_get(lpfc_wcqe_c_code, &cq_event->cqe.wcqe_cmpl)) {
857                 case CQE_CODE_COMPL_WQE:
858                         rspiocbq = container_of(cq_event, struct lpfc_iocbq,
859                                                  cq_event);
860                         lpfc_sli_release_iocbq(phba, rspiocbq);
861                         break;
862                 case CQE_CODE_RECEIVE:
863                 case CQE_CODE_RECEIVE_V1:
864                         dmabuf = container_of(cq_event, struct hbq_dmabuf,
865                                               cq_event);
866                         lpfc_in_buf_free(phba, &dmabuf->dbuf);
867                 }
868         }
869 }
870 
871 /**
872  * lpfc_hba_free_post_buf - Perform lpfc uninitialization after HBA reset
873  * @phba: pointer to lpfc HBA data structure.
874  *
875  * This routine will cleanup posted ELS buffers after the HBA is reset
876  * when bringing down the SLI Layer.
877  *
878  *
879  * Return codes
880  *   void.
881  **/
882 static void
883 lpfc_hba_free_post_buf(struct lpfc_hba *phba)
884 {
885         struct lpfc_sli *psli = &phba->sli;
886         struct lpfc_sli_ring *pring;
887         struct lpfc_dmabuf *mp, *next_mp;
888         LIST_HEAD(buflist);
889         int count;
890 
891         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
892                 lpfc_sli_hbqbuf_free_all(phba);
893         else {
894                 /* Cleanup preposted buffers on the ELS ring */
895                 pring = &psli->ring[LPFC_ELS_RING];
896                 spin_lock_irq(&phba->hbalock);
897                 list_splice_init(&pring->postbufq, &buflist);
898                 spin_unlock_irq(&phba->hbalock);
899 
900                 count = 0;
901                 list_for_each_entry_safe(mp, next_mp, &buflist, list) {
902                         list_del(&mp->list);
903                         count++;
904                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
905                         kfree(mp);
906                 }
907 
908                 spin_lock_irq(&phba->hbalock);
909                 pring->postbufq_cnt -= count;
910                 spin_unlock_irq(&phba->hbalock);
911         }
912 }
913 
914 /**
915  * lpfc_hba_clean_txcmplq - Perform lpfc uninitialization after HBA reset
916  * @phba: pointer to lpfc HBA data structure.
917  *
918  * This routine will cleanup the txcmplq after the HBA is reset when bringing
919  * down the SLI Layer.
920  *
921  * Return codes
922  *   void
923  **/
924 static void
925 lpfc_hba_clean_txcmplq(struct lpfc_hba *phba)
926 {
927         struct lpfc_sli *psli = &phba->sli;
928         struct lpfc_sli_ring *pring;
929         LIST_HEAD(completions);
930         int i;
931 
932         for (i = 0; i < psli->num_rings; i++) {
933                 pring = &psli->ring[i];
934                 if (phba->sli_rev >= LPFC_SLI_REV4)
935                         spin_lock_irq(&pring->ring_lock);
936                 else
937                         spin_lock_irq(&phba->hbalock);
938                 /* At this point in time the HBA is either reset or DOA. Either
939                  * way, nothing should be on txcmplq as it will NEVER complete.
940                  */
941                 list_splice_init(&pring->txcmplq, &completions);
942                 pring->txcmplq_cnt = 0;
943 
944                 if (phba->sli_rev >= LPFC_SLI_REV4)
945                         spin_unlock_irq(&pring->ring_lock);
946                 else
947                         spin_unlock_irq(&phba->hbalock);
948 
949                 /* Cancel all the IOCBs from the completions list */
950                 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
951                                       IOERR_SLI_ABORTED);
952                 lpfc_sli_abort_iocb_ring(phba, pring);
953         }
954 }
955 
956 /**
957  * lpfc_hba_down_post_s3 - Perform lpfc uninitialization after HBA reset
958         int i;
959  * @phba: pointer to lpfc HBA data structure.
960  *
961  * This routine will do uninitialization after the HBA is reset when bring
962  * down the SLI Layer.
963  *
964  * Return codes
965  *   0 - success.
966  *   Any other value - error.
967  **/
968 static int
969 lpfc_hba_down_post_s3(struct lpfc_hba *phba)
970 {
971         lpfc_hba_free_post_buf(phba);
972         lpfc_hba_clean_txcmplq(phba);
973         return 0;
974 }
975 
976 /**
977  * lpfc_hba_down_post_s4 - Perform lpfc uninitialization after HBA reset
978  * @phba: pointer to lpfc HBA data structure.
979  *
980  * This routine will do uninitialization after the HBA is reset when bring
981  * down the SLI Layer.
982  *
983  * Return codes
984  *   0 - success.
985  *   Any other value - error.
986  **/
987 static int
988 lpfc_hba_down_post_s4(struct lpfc_hba *phba)
989 {
990         struct lpfc_scsi_buf *psb, *psb_next;
991         LIST_HEAD(aborts);
992         unsigned long iflag = 0;
993         struct lpfc_sglq *sglq_entry = NULL;
994         struct lpfc_sli *psli = &phba->sli;
995         struct lpfc_sli_ring *pring;
996 
997         lpfc_hba_free_post_buf(phba);
998         lpfc_hba_clean_txcmplq(phba);
999         pring = &psli->ring[LPFC_ELS_RING];
1000 
1001         /* At this point in time the HBA is either reset or DOA. Either
1002          * way, nothing should be on lpfc_abts_els_sgl_list, it needs to be
1003          * on the lpfc_sgl_list so that it can either be freed if the
1004          * driver is unloading or reposted if the driver is restarting
1005          * the port.
1006          */
1007         spin_lock_irq(&phba->hbalock);  /* required for lpfc_sgl_list and */
1008                                         /* scsl_buf_list */
1009         /* abts_sgl_list_lock required because worker thread uses this
1010          * list.
1011          */
1012         spin_lock(&phba->sli4_hba.abts_sgl_list_lock);
1013         list_for_each_entry(sglq_entry,
1014                 &phba->sli4_hba.lpfc_abts_els_sgl_list, list)
1015                 sglq_entry->state = SGL_FREED;
1016 
1017         spin_lock(&pring->ring_lock);
1018         list_splice_init(&phba->sli4_hba.lpfc_abts_els_sgl_list,
1019                         &phba->sli4_hba.lpfc_sgl_list);
1020         spin_unlock(&pring->ring_lock);
1021         spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
1022         /* abts_scsi_buf_list_lock required because worker thread uses this
1023          * list.
1024          */
1025         spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock);
1026         list_splice_init(&phba->sli4_hba.lpfc_abts_scsi_buf_list,
1027                         &aborts);
1028         spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock);
1029         spin_unlock_irq(&phba->hbalock);
1030 
1031         list_for_each_entry_safe(psb, psb_next, &aborts, list) {
1032                 psb->pCmd = NULL;
1033                 psb->status = IOSTAT_SUCCESS;
1034         }
1035         spin_lock_irqsave(&phba->scsi_buf_list_put_lock, iflag);
1036         list_splice(&aborts, &phba->lpfc_scsi_buf_list_put);
1037         spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, iflag);
1038 
1039         lpfc_sli4_free_sp_events(phba);
1040         return 0;
1041 }
1042 
1043 /**
1044  * lpfc_hba_down_post - Wrapper func for hba down post routine
1045  * @phba: pointer to lpfc HBA data structure.
1046  *
1047  * This routine wraps the actual SLI3 or SLI4 routine for performing
1048  * uninitialization after the HBA is reset when bring down the SLI Layer.
1049  *
1050  * Return codes
1051  *   0 - success.
1052  *   Any other value - error.
1053  **/
1054 int
1055 lpfc_hba_down_post(struct lpfc_hba *phba)
1056 {
1057         return (*phba->lpfc_hba_down_post)(phba);
1058 }
1059 
1060 /**
1061  * lpfc_hb_timeout - The HBA-timer timeout handler
1062  * @ptr: unsigned long holds the pointer to lpfc hba data structure.
1063  *
1064  * This is the HBA-timer timeout handler registered to the lpfc driver. When
1065  * this timer fires, a HBA timeout event shall be posted to the lpfc driver
1066  * work-port-events bitmap and the worker thread is notified. This timeout
1067  * event will be used by the worker thread to invoke the actual timeout
1068  * handler routine, lpfc_hb_timeout_handler. Any periodical operations will
1069  * be performed in the timeout handler and the HBA timeout event bit shall
1070  * be cleared by the worker thread after it has taken the event bitmap out.
1071  **/
1072 static void
1073 lpfc_hb_timeout(unsigned long ptr)
1074 {
1075         struct lpfc_hba *phba;
1076         uint32_t tmo_posted;
1077         unsigned long iflag;
1078 
1079         phba = (struct lpfc_hba *)ptr;
1080 
1081         /* Check for heart beat timeout conditions */
1082         spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
1083         tmo_posted = phba->pport->work_port_events & WORKER_HB_TMO;
1084         if (!tmo_posted)
1085                 phba->pport->work_port_events |= WORKER_HB_TMO;
1086         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
1087 
1088         /* Tell the worker thread there is work to do */
1089         if (!tmo_posted)
1090                 lpfc_worker_wake_up(phba);
1091         return;
1092 }
1093 
1094 /**
1095  * lpfc_rrq_timeout - The RRQ-timer timeout handler
1096  * @ptr: unsigned long holds the pointer to lpfc hba data structure.
1097  *
1098  * This is the RRQ-timer timeout handler registered to the lpfc driver. When
1099  * this timer fires, a RRQ timeout event shall be posted to the lpfc driver
1100  * work-port-events bitmap and the worker thread is notified. This timeout
1101  * event will be used by the worker thread to invoke the actual timeout
1102  * handler routine, lpfc_rrq_handler. Any periodical operations will
1103  * be performed in the timeout handler and the RRQ timeout event bit shall
1104  * be cleared by the worker thread after it has taken the event bitmap out.
1105  **/
1106 static void
1107 lpfc_rrq_timeout(unsigned long ptr)
1108 {
1109         struct lpfc_hba *phba;
1110         unsigned long iflag;
1111 
1112         phba = (struct lpfc_hba *)ptr;
1113         spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
1114         if (!(phba->pport->load_flag & FC_UNLOADING))
1115                 phba->hba_flag |= HBA_RRQ_ACTIVE;
1116         else
1117                 phba->hba_flag &= ~HBA_RRQ_ACTIVE;
1118         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
1119 
1120         if (!(phba->pport->load_flag & FC_UNLOADING))
1121                 lpfc_worker_wake_up(phba);
1122 }
1123 
1124 /**
1125  * lpfc_hb_mbox_cmpl - The lpfc heart-beat mailbox command callback function
1126  * @phba: pointer to lpfc hba data structure.
1127  * @pmboxq: pointer to the driver internal queue element for mailbox command.
1128  *
1129  * This is the callback function to the lpfc heart-beat mailbox command.
1130  * If configured, the lpfc driver issues the heart-beat mailbox command to
1131  * the HBA every LPFC_HB_MBOX_INTERVAL (current 5) seconds. At the time the
1132  * heart-beat mailbox command is issued, the driver shall set up heart-beat
1133  * timeout timer to LPFC_HB_MBOX_TIMEOUT (current 30) seconds and marks
1134  * heart-beat outstanding state. Once the mailbox command comes back and
1135  * no error conditions detected, the heart-beat mailbox command timer is
1136  * reset to LPFC_HB_MBOX_INTERVAL seconds and the heart-beat outstanding
1137  * state is cleared for the next heart-beat. If the timer expired with the
1138  * heart-beat outstanding state set, the driver will put the HBA offline.
1139  **/
1140 static void
1141 lpfc_hb_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
1142 {
1143         unsigned long drvr_flag;
1144 
1145         spin_lock_irqsave(&phba->hbalock, drvr_flag);
1146         phba->hb_outstanding = 0;
1147         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
1148 
1149         /* Check and reset heart-beat timer is necessary */
1150         mempool_free(pmboxq, phba->mbox_mem_pool);
1151         if (!(phba->pport->fc_flag & FC_OFFLINE_MODE) &&
1152                 !(phba->link_state == LPFC_HBA_ERROR) &&
1153                 !(phba->pport->load_flag & FC_UNLOADING))
1154                 mod_timer(&phba->hb_tmofunc,
1155                           jiffies +
1156                           msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
1157         return;
1158 }
1159 
1160 /**
1161  * lpfc_hb_timeout_handler - The HBA-timer timeout handler
1162  * @phba: pointer to lpfc hba data structure.
1163  *
1164  * This is the actual HBA-timer timeout handler to be invoked by the worker
1165  * thread whenever the HBA timer fired and HBA-timeout event posted. This
1166  * handler performs any periodic operations needed for the device. If such
1167  * periodic event has already been attended to either in the interrupt handler
1168  * or by processing slow-ring or fast-ring events within the HBA-timer
1169  * timeout window (LPFC_HB_MBOX_INTERVAL), this handler just simply resets
1170  * the timer for the next timeout period. If lpfc heart-beat mailbox command
1171  * is configured and there is no heart-beat mailbox command outstanding, a
1172  * heart-beat mailbox is issued and timer set properly. Otherwise, if there
1173  * has been a heart-beat mailbox command outstanding, the HBA shall be put
1174  * to offline.
1175  **/
1176 void
1177 lpfc_hb_timeout_handler(struct lpfc_hba *phba)
1178 {
1179         struct lpfc_vport **vports;
1180         LPFC_MBOXQ_t *pmboxq;
1181         struct lpfc_dmabuf *buf_ptr;
1182         int retval, i;
1183         struct lpfc_sli *psli = &phba->sli;
1184         LIST_HEAD(completions);
1185 
1186         vports = lpfc_create_vport_work_array(phba);
1187         if (vports != NULL)
1188                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1189                         lpfc_rcv_seq_check_edtov(vports[i]);
1190                         lpfc_fdmi_num_disc_check(vports[i]);
1191                 }
1192         lpfc_destroy_vport_work_array(phba, vports);
1193 
1194         if ((phba->link_state == LPFC_HBA_ERROR) ||
1195                 (phba->pport->load_flag & FC_UNLOADING) ||
1196                 (phba->pport->fc_flag & FC_OFFLINE_MODE))
1197                 return;
1198 
1199         spin_lock_irq(&phba->pport->work_port_lock);
1200 
1201         if (time_after(phba->last_completion_time +
1202                         msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL),
1203                         jiffies)) {
1204                 spin_unlock_irq(&phba->pport->work_port_lock);
1205                 if (!phba->hb_outstanding)
1206                         mod_timer(&phba->hb_tmofunc,
1207                                 jiffies +
1208                                 msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
1209                 else
1210                         mod_timer(&phba->hb_tmofunc,
1211                                 jiffies +
1212                                 msecs_to_jiffies(1000 * LPFC_HB_MBOX_TIMEOUT));
1213                 return;
1214         }
1215         spin_unlock_irq(&phba->pport->work_port_lock);
1216 
1217         if (phba->elsbuf_cnt &&
1218                 (phba->elsbuf_cnt == phba->elsbuf_prev_cnt)) {
1219                 spin_lock_irq(&phba->hbalock);
1220                 list_splice_init(&phba->elsbuf, &completions);
1221                 phba->elsbuf_cnt = 0;
1222                 phba->elsbuf_prev_cnt = 0;
1223                 spin_unlock_irq(&phba->hbalock);
1224 
1225                 while (!list_empty(&completions)) {
1226                         list_remove_head(&completions, buf_ptr,
1227                                 struct lpfc_dmabuf, list);
1228                         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
1229                         kfree(buf_ptr);
1230                 }
1231         }
1232         phba->elsbuf_prev_cnt = phba->elsbuf_cnt;
1233 
1234         /* If there is no heart beat outstanding, issue a heartbeat command */
1235         if (phba->cfg_enable_hba_heartbeat) {
1236                 if (!phba->hb_outstanding) {
1237                         if ((!(psli->sli_flag & LPFC_SLI_MBOX_ACTIVE)) &&
1238                                 (list_empty(&psli->mboxq))) {
1239                                 pmboxq = mempool_alloc(phba->mbox_mem_pool,
1240                                                         GFP_KERNEL);
1241                                 if (!pmboxq) {
1242                                         mod_timer(&phba->hb_tmofunc,
1243                                                  jiffies +
1244                                                  msecs_to_jiffies(1000 *
1245                                                  LPFC_HB_MBOX_INTERVAL));
1246                                         return;
1247                                 }
1248 
1249                                 lpfc_heart_beat(phba, pmboxq);
1250                                 pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl;
1251                                 pmboxq->vport = phba->pport;
1252                                 retval = lpfc_sli_issue_mbox(phba, pmboxq,
1253                                                 MBX_NOWAIT);
1254 
1255                                 if (retval != MBX_BUSY &&
1256                                         retval != MBX_SUCCESS) {
1257                                         mempool_free(pmboxq,
1258                                                         phba->mbox_mem_pool);
1259                                         mod_timer(&phba->hb_tmofunc,
1260                                                 jiffies +
1261                                                 msecs_to_jiffies(1000 *
1262                                                 LPFC_HB_MBOX_INTERVAL));
1263                                         return;
1264                                 }
1265                                 phba->skipped_hb = 0;
1266                                 phba->hb_outstanding = 1;
1267                         } else if (time_before_eq(phba->last_completion_time,
1268                                         phba->skipped_hb)) {
1269                                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
1270                                         "2857 Last completion time not "
1271                                         " updated in %d ms\n",
1272                                         jiffies_to_msecs(jiffies
1273                                                  - phba->last_completion_time));
1274                         } else
1275                                 phba->skipped_hb = jiffies;
1276 
1277                         mod_timer(&phba->hb_tmofunc,
1278                                  jiffies +
1279                                  msecs_to_jiffies(1000 * LPFC_HB_MBOX_TIMEOUT));
1280                         return;
1281                 } else {
1282                         /*
1283                         * If heart beat timeout called with hb_outstanding set
1284                         * we need to give the hb mailbox cmd a chance to
1285                         * complete or TMO.
1286                         */
1287                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
1288                                         "0459 Adapter heartbeat still out"
1289                                         "standing:last compl time was %d ms.\n",
1290                                         jiffies_to_msecs(jiffies
1291                                                  - phba->last_completion_time));
1292                         mod_timer(&phba->hb_tmofunc,
1293                                 jiffies +
1294                                 msecs_to_jiffies(1000 * LPFC_HB_MBOX_TIMEOUT));
1295                 }
1296         } else {
1297                         mod_timer(&phba->hb_tmofunc,
1298                                 jiffies +
1299                                 msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
1300         }
1301 }
1302 
1303 /**
1304  * lpfc_offline_eratt - Bring lpfc offline on hardware error attention
1305  * @phba: pointer to lpfc hba data structure.
1306  *
1307  * This routine is called to bring the HBA offline when HBA hardware error
1308  * other than Port Error 6 has been detected.
1309  **/
1310 static void
1311 lpfc_offline_eratt(struct lpfc_hba *phba)
1312 {
1313         struct lpfc_sli   *psli = &phba->sli;
1314 
1315         spin_lock_irq(&phba->hbalock);
1316         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1317         spin_unlock_irq(&phba->hbalock);
1318         lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1319 
1320         lpfc_offline(phba);
1321         lpfc_reset_barrier(phba);
1322         spin_lock_irq(&phba->hbalock);
1323         lpfc_sli_brdreset(phba);
1324         spin_unlock_irq(&phba->hbalock);
1325         lpfc_hba_down_post(phba);
1326         lpfc_sli_brdready(phba, HS_MBRDY);
1327         lpfc_unblock_mgmt_io(phba);
1328         phba->link_state = LPFC_HBA_ERROR;
1329         return;
1330 }
1331 
1332 /**
1333  * lpfc_sli4_offline_eratt - Bring lpfc offline on SLI4 hardware error attention
1334  * @phba: pointer to lpfc hba data structure.
1335  *
1336  * This routine is called to bring a SLI4 HBA offline when HBA hardware error
1337  * other than Port Error 6 has been detected.
1338  **/
1339 void
1340 lpfc_sli4_offline_eratt(struct lpfc_hba *phba)
1341 {
1342         spin_lock_irq(&phba->hbalock);
1343         phba->link_state = LPFC_HBA_ERROR;
1344         spin_unlock_irq(&phba->hbalock);
1345 
1346         lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1347         lpfc_offline(phba);
1348         lpfc_hba_down_post(phba);
1349         lpfc_unblock_mgmt_io(phba);
1350 }
1351 
1352 /**
1353  * lpfc_handle_deferred_eratt - The HBA hardware deferred error handler
1354  * @phba: pointer to lpfc hba data structure.
1355  *
1356  * This routine is invoked to handle the deferred HBA hardware error
1357  * conditions. This type of error is indicated by HBA by setting ER1
1358  * and another ER bit in the host status register. The driver will
1359  * wait until the ER1 bit clears before handling the error condition.
1360  **/
1361 static void
1362 lpfc_handle_deferred_eratt(struct lpfc_hba *phba)
1363 {
1364         uint32_t old_host_status = phba->work_hs;
1365         struct lpfc_sli *psli = &phba->sli;
1366 
1367         /* If the pci channel is offline, ignore possible errors,
1368          * since we cannot communicate with the pci card anyway.
1369          */
1370         if (pci_channel_offline(phba->pcidev)) {
1371                 spin_lock_irq(&phba->hbalock);
1372                 phba->hba_flag &= ~DEFER_ERATT;
1373                 spin_unlock_irq(&phba->hbalock);
1374                 return;
1375         }
1376 
1377         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1378                 "0479 Deferred Adapter Hardware Error "
1379                 "Data: x%x x%x x%x\n",
1380                 phba->work_hs,
1381                 phba->work_status[0], phba->work_status[1]);
1382 
1383         spin_lock_irq(&phba->hbalock);
1384         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1385         spin_unlock_irq(&phba->hbalock);
1386 
1387 
1388         /*
1389          * Firmware stops when it triggred erratt. That could cause the I/Os
1390          * dropped by the firmware. Error iocb (I/O) on txcmplq and let the
1391          * SCSI layer retry it after re-establishing link.
1392          */
1393         lpfc_sli_abort_fcp_rings(phba);
1394 
1395         /*
1396          * There was a firmware error. Take the hba offline and then
1397          * attempt to restart it.
1398          */
1399         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
1400         lpfc_offline(phba);
1401 
1402         /* Wait for the ER1 bit to clear.*/
1403         while (phba->work_hs & HS_FFER1) {
1404                 msleep(100);
1405                 if (lpfc_readl(phba->HSregaddr, &phba->work_hs)) {
1406                         phba->work_hs = UNPLUG_ERR ;
1407                         break;
1408                 }
1409                 /* If driver is unloading let the worker thread continue */
1410                 if (phba->pport->load_flag & FC_UNLOADING) {
1411                         phba->work_hs = 0;
1412                         break;
1413                 }
1414         }
1415 
1416         /*
1417          * This is to ptrotect against a race condition in which
1418          * first write to the host attention register clear the
1419          * host status register.
1420          */
1421         if ((!phba->work_hs) && (!(phba->pport->load_flag & FC_UNLOADING)))
1422                 phba->work_hs = old_host_status & ~HS_FFER1;
1423 
1424         spin_lock_irq(&phba->hbalock);
1425         phba->hba_flag &= ~DEFER_ERATT;
1426         spin_unlock_irq(&phba->hbalock);
1427         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
1428         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
1429 }
1430 
1431 static void
1432 lpfc_board_errevt_to_mgmt(struct lpfc_hba *phba)
1433 {
1434         struct lpfc_board_event_header board_event;
1435         struct Scsi_Host *shost;
1436 
1437         board_event.event_type = FC_REG_BOARD_EVENT;
1438         board_event.subcategory = LPFC_EVENT_PORTINTERR;
1439         shost = lpfc_shost_from_vport(phba->pport);
1440         fc_host_post_vendor_event(shost, fc_get_event_number(),
1441                                   sizeof(board_event),
1442                                   (char *) &board_event,
1443                                   LPFC_NL_VENDOR_ID);
1444 }
1445 
1446 /**
1447  * lpfc_handle_eratt_s3 - The SLI3 HBA hardware error handler
1448  * @phba: pointer to lpfc hba data structure.
1449  *
1450  * This routine is invoked to handle the following HBA hardware error
1451  * conditions:
1452  * 1 - HBA error attention interrupt
1453  * 2 - DMA ring index out of range
1454  * 3 - Mailbox command came back as unknown
1455  **/
1456 static void
1457 lpfc_handle_eratt_s3(struct lpfc_hba *phba)
1458 {
1459         struct lpfc_vport *vport = phba->pport;
1460         struct lpfc_sli   *psli = &phba->sli;
1461         uint32_t event_data;
1462         unsigned long temperature;
1463         struct temp_event temp_event_data;
1464         struct Scsi_Host  *shost;
1465 
1466         /* If the pci channel is offline, ignore possible errors,
1467          * since we cannot communicate with the pci card anyway.
1468          */
1469         if (pci_channel_offline(phba->pcidev)) {
1470                 spin_lock_irq(&phba->hbalock);
1471                 phba->hba_flag &= ~DEFER_ERATT;
1472                 spin_unlock_irq(&phba->hbalock);
1473                 return;
1474         }
1475 
1476         /* If resets are disabled then leave the HBA alone and return */
1477         if (!phba->cfg_enable_hba_reset)
1478                 return;
1479 
1480         /* Send an internal error event to mgmt application */
1481         lpfc_board_errevt_to_mgmt(phba);
1482 
1483         if (phba->hba_flag & DEFER_ERATT)
1484                 lpfc_handle_deferred_eratt(phba);
1485 
1486         if ((phba->work_hs & HS_FFER6) || (phba->work_hs & HS_FFER8)) {
1487                 if (phba->work_hs & HS_FFER6)
1488                         /* Re-establishing Link */
1489                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1490                                         "1301 Re-establishing Link "
1491                                         "Data: x%x x%x x%x\n",
1492                                         phba->work_hs, phba->work_status[0],
1493                                         phba->work_status[1]);
1494                 if (phba->work_hs & HS_FFER8)
1495                         /* Device Zeroization */
1496                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1497                                         "2861 Host Authentication device "
1498                                         "zeroization Data:x%x x%x x%x\n",
1499                                         phba->work_hs, phba->work_status[0],
1500                                         phba->work_status[1]);
1501 
1502                 spin_lock_irq(&phba->hbalock);
1503                 psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1504                 spin_unlock_irq(&phba->hbalock);
1505 
1506                 /*
1507                 * Firmware stops when it triggled erratt with HS_FFER6.
1508                 * That could cause the I/Os dropped by the firmware.
1509                 * Error iocb (I/O) on txcmplq and let the SCSI layer
1510                 * retry it after re-establishing link.
1511                 */
1512                 lpfc_sli_abort_fcp_rings(phba);
1513 
1514                 /*
1515                  * There was a firmware error.  Take the hba offline and then
1516                  * attempt to restart it.
1517                  */
1518                 lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1519                 lpfc_offline(phba);
1520                 lpfc_sli_brdrestart(phba);
1521                 if (lpfc_online(phba) == 0) {   /* Initialize the HBA */
1522                         lpfc_unblock_mgmt_io(phba);
1523                         return;
1524                 }
1525                 lpfc_unblock_mgmt_io(phba);
1526         } else if (phba->work_hs & HS_CRIT_TEMP) {
1527                 temperature = readl(phba->MBslimaddr + TEMPERATURE_OFFSET);
1528                 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
1529                 temp_event_data.event_code = LPFC_CRIT_TEMP;
1530                 temp_event_data.data = (uint32_t)temperature;
1531 
1532                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1533                                 "0406 Adapter maximum temperature exceeded "
1534                                 "(%ld), taking this port offline "
1535                                 "Data: x%x x%x x%x\n",
1536                                 temperature, phba->work_hs,
1537                                 phba->work_status[0], phba->work_status[1]);
1538 
1539                 shost = lpfc_shost_from_vport(phba->pport);
1540                 fc_host_post_vendor_event(shost, fc_get_event_number(),
1541                                           sizeof(temp_event_data),
1542                                           (char *) &temp_event_data,
1543                                           SCSI_NL_VID_TYPE_PCI
1544                                           | PCI_VENDOR_ID_EMULEX);
1545 
1546                 spin_lock_irq(&phba->hbalock);
1547                 phba->over_temp_state = HBA_OVER_TEMP;
1548                 spin_unlock_irq(&phba->hbalock);
1549                 lpfc_offline_eratt(phba);
1550 
1551         } else {
1552                 /* The if clause above forces this code path when the status
1553                  * failure is a value other than FFER6. Do not call the offline
1554                  * twice. This is the adapter hardware error path.
1555                  */
1556                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1557                                 "0457 Adapter Hardware Error "
1558                                 "Data: x%x x%x x%x\n",
1559                                 phba->work_hs,
1560                                 phba->work_status[0], phba->work_status[1]);
1561 
1562                 event_data = FC_REG_DUMP_EVENT;
1563                 shost = lpfc_shost_from_vport(vport);
1564                 fc_host_post_vendor_event(shost, fc_get_event_number(),
1565                                 sizeof(event_data), (char *) &event_data,
1566                                 SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
1567 
1568                 lpfc_offline_eratt(phba);
1569         }
1570         return;
1571 }
1572 
1573 /**
1574  * lpfc_sli4_port_sta_fn_reset - The SLI4 function reset due to port status reg
1575  * @phba: pointer to lpfc hba data structure.
1576  * @mbx_action: flag for mailbox shutdown action.
1577  *
1578  * This routine is invoked to perform an SLI4 port PCI function reset in
1579  * response to port status register polling attention. It waits for port
1580  * status register (ERR, RDY, RN) bits before proceeding with function reset.
1581  * During this process, interrupt vectors are freed and later requested
1582  * for handling possible port resource change.
1583  **/
1584 static int
1585 lpfc_sli4_port_sta_fn_reset(struct lpfc_hba *phba, int mbx_action,
1586                             bool en_rn_msg)
1587 {
1588         int rc;
1589         uint32_t intr_mode;
1590 
1591         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
1592             LPFC_SLI_INTF_IF_TYPE_2) {
1593                 /*
1594                  * On error status condition, driver need to wait for port
1595                  * ready before performing reset.
1596                  */
1597                 rc = lpfc_sli4_pdev_status_reg_wait(phba);
1598                 if (rc)
1599                         return rc;
1600         }
1601 
1602         /* need reset: attempt for port recovery */
1603         if (en_rn_msg)
1604                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1605                                 "2887 Reset Needed: Attempting Port "
1606                                 "Recovery...\n");
1607         lpfc_offline_prep(phba, mbx_action);
1608         lpfc_offline(phba);
1609         /* release interrupt for possible resource change */
1610         lpfc_sli4_disable_intr(phba);
1611         lpfc_sli_brdrestart(phba);
1612         /* request and enable interrupt */
1613         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
1614         if (intr_mode == LPFC_INTR_ERROR) {
1615                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1616                                 "3175 Failed to enable interrupt\n");
1617                 return -EIO;
1618         }
1619         phba->intr_mode = intr_mode;
1620         rc = lpfc_online(phba);
1621         if (rc == 0)
1622                 lpfc_unblock_mgmt_io(phba);
1623 
1624         return rc;
1625 }
1626 
1627 /**
1628  * lpfc_handle_eratt_s4 - The SLI4 HBA hardware error handler
1629  * @phba: pointer to lpfc hba data structure.
1630  *
1631  * This routine is invoked to handle the SLI4 HBA hardware error attention
1632  * conditions.
1633  **/
1634 static void
1635 lpfc_handle_eratt_s4(struct lpfc_hba *phba)
1636 {
1637         struct lpfc_vport *vport = phba->pport;
1638         uint32_t event_data;
1639         struct Scsi_Host *shost;
1640         uint32_t if_type;
1641         struct lpfc_register portstat_reg = {0};
1642         uint32_t reg_err1, reg_err2;
1643         uint32_t uerrlo_reg, uemasklo_reg;
1644         uint32_t smphr_port_status = 0, pci_rd_rc1, pci_rd_rc2;
1645         bool en_rn_msg = true;
1646         struct temp_event temp_event_data;
1647         struct lpfc_register portsmphr_reg;
1648         int rc, i;
1649 
1650         /* If the pci channel is offline, ignore possible errors, since
1651          * we cannot communicate with the pci card anyway.
1652          */
1653         if (pci_channel_offline(phba->pcidev))
1654                 return;
1655 
1656         memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
1657         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
1658         switch (if_type) {
1659         case LPFC_SLI_INTF_IF_TYPE_0:
1660                 pci_rd_rc1 = lpfc_readl(
1661                                 phba->sli4_hba.u.if_type0.UERRLOregaddr,
1662                                 &uerrlo_reg);
1663                 pci_rd_rc2 = lpfc_readl(
1664                                 phba->sli4_hba.u.if_type0.UEMASKLOregaddr,
1665                                 &uemasklo_reg);
1666                 /* consider PCI bus read error as pci_channel_offline */
1667                 if (pci_rd_rc1 == -EIO && pci_rd_rc2 == -EIO)
1668                         return;
1669                 if (!(phba->hba_flag & HBA_RECOVERABLE_UE)) {
1670                         lpfc_sli4_offline_eratt(phba);
1671                         return;
1672                 }
1673                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1674                                 "7623 Checking UE recoverable");
1675 
1676                 for (i = 0; i < phba->sli4_hba.ue_to_sr / 1000; i++) {
1677                         if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
1678                                        &portsmphr_reg.word0))
1679                                 continue;
1680 
1681                         smphr_port_status = bf_get(lpfc_port_smphr_port_status,
1682                                                    &portsmphr_reg);
1683                         if ((smphr_port_status & LPFC_PORT_SEM_MASK) ==
1684                             LPFC_PORT_SEM_UE_RECOVERABLE)
1685                                 break;
1686                         /*Sleep for 1Sec, before checking SEMAPHORE */
1687                         msleep(1000);
1688                 }
1689 
1690                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1691                                 "4827 smphr_port_status x%x : Waited %dSec",
1692                                 smphr_port_status, i);
1693 
1694                 /* Recoverable UE, reset the HBA device */
1695                 if ((smphr_port_status & LPFC_PORT_SEM_MASK) ==
1696                     LPFC_PORT_SEM_UE_RECOVERABLE) {
1697                         for (i = 0; i < 20; i++) {
1698                                 msleep(1000);
1699                                 if (!lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
1700                                     &portsmphr_reg.word0) &&
1701                                     (LPFC_POST_STAGE_PORT_READY ==
1702                                      bf_get(lpfc_port_smphr_port_status,
1703                                      &portsmphr_reg))) {
1704                                         rc = lpfc_sli4_port_sta_fn_reset(phba,
1705                                                 LPFC_MBX_NO_WAIT, en_rn_msg);
1706                                         if (rc == 0)
1707                                                 return;
1708                                         lpfc_printf_log(phba,
1709                                                 KERN_ERR, LOG_INIT,
1710                                                 "4215 Failed to recover UE");
1711                                         break;
1712                                 }
1713                         }
1714                 }
1715                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1716                                 "7624 Firmware not ready: Failing UE recovery,"
1717                                 " waited %dSec", i);
1718                 lpfc_sli4_offline_eratt(phba);
1719                 break;
1720 
1721         case LPFC_SLI_INTF_IF_TYPE_2:
1722                 pci_rd_rc1 = lpfc_readl(
1723                                 phba->sli4_hba.u.if_type2.STATUSregaddr,
1724                                 &portstat_reg.word0);
1725                 /* consider PCI bus read error as pci_channel_offline */
1726                 if (pci_rd_rc1 == -EIO) {
1727                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1728                                 "3151 PCI bus read access failure: x%x\n",
1729                                 readl(phba->sli4_hba.u.if_type2.STATUSregaddr));
1730                         return;
1731                 }
1732                 reg_err1 = readl(phba->sli4_hba.u.if_type2.ERR1regaddr);
1733                 reg_err2 = readl(phba->sli4_hba.u.if_type2.ERR2regaddr);
1734                 if (bf_get(lpfc_sliport_status_oti, &portstat_reg)) {
1735                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1736                                 "2889 Port Overtemperature event, "
1737                                 "taking port offline Data: x%x x%x\n",
1738                                 reg_err1, reg_err2);
1739 
1740                         phba->sfp_alarm |= LPFC_TRANSGRESSION_HIGH_TEMPERATURE;
1741                         temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
1742                         temp_event_data.event_code = LPFC_CRIT_TEMP;
1743                         temp_event_data.data = 0xFFFFFFFF;
1744 
1745                         shost = lpfc_shost_from_vport(phba->pport);
1746                         fc_host_post_vendor_event(shost, fc_get_event_number(),
1747                                                   sizeof(temp_event_data),
1748                                                   (char *)&temp_event_data,
1749                                                   SCSI_NL_VID_TYPE_PCI
1750                                                   | PCI_VENDOR_ID_EMULEX);
1751 
1752                         spin_lock_irq(&phba->hbalock);
1753                         phba->over_temp_state = HBA_OVER_TEMP;
1754                         spin_unlock_irq(&phba->hbalock);
1755                         lpfc_sli4_offline_eratt(phba);
1756                         return;
1757                 }
1758                 if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
1759                     reg_err2 == SLIPORT_ERR2_REG_FW_RESTART) {
1760                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1761                                         "3143 Port Down: Firmware Update "
1762                                         "Detected\n");
1763                         en_rn_msg = false;
1764                 } else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
1765                          reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
1766                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1767                                         "3144 Port Down: Debug Dump\n");
1768                 else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
1769                          reg_err2 == SLIPORT_ERR2_REG_FUNC_PROVISON)
1770                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1771                                         "3145 Port Down: Provisioning\n");
1772 
1773                 /* If resets are disabled then leave the HBA alone and return */
1774                 if (!phba->cfg_enable_hba_reset)
1775                         return;
1776 
1777                 /* Check port status register for function reset */
1778                 rc = lpfc_sli4_port_sta_fn_reset(phba, LPFC_MBX_NO_WAIT,
1779                                 en_rn_msg);
1780                 if (rc == 0) {
1781                         /* don't report event on forced debug dump */
1782                         if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
1783                             reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
1784                                 return;
1785                         else
1786                                 break;
1787                 }
1788                 /* fall through for not able to recover */
1789                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1790                                 "3152 Unrecoverable error, bring the port "
1791                                 "offline\n");
1792                 lpfc_sli4_offline_eratt(phba);
1793                 break;
1794         case LPFC_SLI_INTF_IF_TYPE_1:
1795         default:
1796                 break;
1797         }
1798         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
1799                         "3123 Report dump event to upper layer\n");
1800         /* Send an internal error event to mgmt application */
1801         lpfc_board_errevt_to_mgmt(phba);
1802 
1803         event_data = FC_REG_DUMP_EVENT;
1804         shost = lpfc_shost_from_vport(vport);
1805         fc_host_post_vendor_event(shost, fc_get_event_number(),
1806                                   sizeof(event_data), (char *) &event_data,
1807                                   SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
1808 }
1809 
1810 /**
1811  * lpfc_handle_eratt - Wrapper func for handling hba error attention
1812  * @phba: pointer to lpfc HBA data structure.
1813  *
1814  * This routine wraps the actual SLI3 or SLI4 hba error attention handling
1815  * routine from the API jump table function pointer from the lpfc_hba struct.
1816  *
1817  * Return codes
1818  *   0 - success.
1819  *   Any other value - error.
1820  **/
1821 void
1822 lpfc_handle_eratt(struct lpfc_hba *phba)
1823 {
1824         (*phba->lpfc_handle_eratt)(phba);
1825 }
1826 
1827 /**
1828  * lpfc_handle_latt - The HBA link event handler
1829  * @phba: pointer to lpfc hba data structure.
1830  *
1831  * This routine is invoked from the worker thread to handle a HBA host
1832  * attention link event.
1833  **/
1834 void
1835 lpfc_handle_latt(struct lpfc_hba *phba)
1836 {
1837         struct lpfc_vport *vport = phba->pport;
1838         struct lpfc_sli   *psli = &phba->sli;
1839         LPFC_MBOXQ_t *pmb;
1840         volatile uint32_t control;
1841         struct lpfc_dmabuf *mp;
1842         int rc = 0;
1843 
1844         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1845         if (!pmb) {
1846                 rc = 1;
1847                 goto lpfc_handle_latt_err_exit;
1848         }
1849 
1850         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
1851         if (!mp) {
1852                 rc = 2;
1853                 goto lpfc_handle_latt_free_pmb;
1854         }
1855 
1856         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
1857         if (!mp->virt) {
1858                 rc = 3;
1859                 goto lpfc_handle_latt_free_mp;
1860         }
1861 
1862         /* Cleanup any outstanding ELS commands */
1863         lpfc_els_flush_all_cmd(phba);
1864 
1865         psli->slistat.link_event++;
1866         lpfc_read_topology(phba, pmb, mp);
1867         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
1868         pmb->vport = vport;
1869         /* Block ELS IOCBs until we have processed this mbox command */
1870         phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
1871         rc = lpfc_sli_issue_mbox (phba, pmb, MBX_NOWAIT);
1872         if (rc == MBX_NOT_FINISHED) {
1873                 rc = 4;
1874                 goto lpfc_handle_latt_free_mbuf;
1875         }
1876 
1877         /* Clear Link Attention in HA REG */
1878         spin_lock_irq(&phba->hbalock);
1879         writel(HA_LATT, phba->HAregaddr);
1880         readl(phba->HAregaddr); /* flush */
1881         spin_unlock_irq(&phba->hbalock);
1882 
1883         return;
1884 
1885 lpfc_handle_latt_free_mbuf:
1886         phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1887         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1888 lpfc_handle_latt_free_mp:
1889         kfree(mp);
1890 lpfc_handle_latt_free_pmb:
1891         mempool_free(pmb, phba->mbox_mem_pool);
1892 lpfc_handle_latt_err_exit:
1893         /* Enable Link attention interrupts */
1894         spin_lock_irq(&phba->hbalock);
1895         psli->sli_flag |= LPFC_PROCESS_LA;
1896         control = readl(phba->HCregaddr);
1897         control |= HC_LAINT_ENA;
1898         writel(control, phba->HCregaddr);
1899         readl(phba->HCregaddr); /* flush */
1900 
1901         /* Clear Link Attention in HA REG */
1902         writel(HA_LATT, phba->HAregaddr);
1903         readl(phba->HAregaddr); /* flush */
1904         spin_unlock_irq(&phba->hbalock);
1905         lpfc_linkdown(phba);
1906         phba->link_state = LPFC_HBA_ERROR;
1907 
1908         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1909                      "0300 LATT: Cannot issue READ_LA: Data:%d\n", rc);
1910 
1911         return;
1912 }
1913 
1914 /**
1915  * lpfc_parse_vpd - Parse VPD (Vital Product Data)
1916  * @phba: pointer to lpfc hba data structure.
1917  * @vpd: pointer to the vital product data.
1918  * @len: length of the vital product data in bytes.
1919  *
1920  * This routine parses the Vital Product Data (VPD). The VPD is treated as
1921  * an array of characters. In this routine, the ModelName, ProgramType, and
1922  * ModelDesc, etc. fields of the phba data structure will be populated.
1923  *
1924  * Return codes
1925  *   0 - pointer to the VPD passed in is NULL
1926  *   1 - success
1927  **/
1928 int
1929 lpfc_parse_vpd(struct lpfc_hba *phba, uint8_t *vpd, int len)
1930 {
1931         uint8_t lenlo, lenhi;
1932         int Length;
1933         int i, j;
1934         int finished = 0;
1935         int index = 0;
1936 
1937         if (!vpd)
1938                 return 0;
1939 
1940         /* Vital Product */
1941         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
1942                         "0455 Vital Product Data: x%x x%x x%x x%x\n",
1943                         (uint32_t) vpd[0], (uint32_t) vpd[1], (uint32_t) vpd[2],
1944                         (uint32_t) vpd[3]);
1945         while (!finished && (index < (len - 4))) {
1946                 switch (vpd[index]) {
1947                 case 0x82:
1948                 case 0x91:
1949                         index += 1;
1950                         lenlo = vpd[index];
1951                         index += 1;
1952                         lenhi = vpd[index];
1953                         index += 1;
1954                         i = ((((unsigned short)lenhi) << 8) + lenlo);
1955                         index += i;
1956                         break;
1957                 case 0x90:
1958                         index += 1;
1959                         lenlo = vpd[index];
1960                         index += 1;
1961                         lenhi = vpd[index];
1962                         index += 1;
1963                         Length = ((((unsigned short)lenhi) << 8) + lenlo);
1964                         if (Length > len - index)
1965                                 Length = len - index;
1966                         while (Length > 0) {
1967                         /* Look for Serial Number */
1968                         if ((vpd[index] == 'S') && (vpd[index+1] == 'N')) {
1969                                 index += 2;
1970                                 i = vpd[index];
1971                                 index += 1;
1972                                 j = 0;
1973                                 Length -= (3+i);
1974                                 while(i--) {
1975                                         phba->SerialNumber[j++] = vpd[index++];
1976                                         if (j == 31)
1977                                                 break;
1978                                 }
1979                                 phba->SerialNumber[j] = 0;
1980                                 continue;
1981                         }
1982                         else if ((vpd[index] == 'V') && (vpd[index+1] == '1')) {
1983                                 phba->vpd_flag |= VPD_MODEL_DESC;
1984                                 index += 2;
1985                                 i = vpd[index];
1986                                 index += 1;
1987                                 j = 0;
1988                                 Length -= (3+i);
1989                                 while(i--) {
1990                                         phba->ModelDesc[j++] = vpd[index++];
1991                                         if (j == 255)
1992                                                 break;
1993                                 }
1994                                 phba->ModelDesc[j] = 0;
1995                                 continue;
1996                         }
1997                         else if ((vpd[index] == 'V') && (vpd[index+1] == '2')) {
1998                                 phba->vpd_flag |= VPD_MODEL_NAME;
1999                                 index += 2;
2000                                 i = vpd[index];
2001                                 index += 1;
2002                                 j = 0;
2003                                 Length -= (3+i);
2004                                 while(i--) {
2005                                         phba->ModelName[j++] = vpd[index++];
2006                                         if (j == 79)
2007                                                 break;
2008                                 }
2009                                 phba->ModelName[j] = 0;
2010                                 continue;
2011                         }
2012                         else if ((vpd[index] == 'V') && (vpd[index+1] == '3')) {
2013                                 phba->vpd_flag |= VPD_PROGRAM_TYPE;
2014                                 index += 2;
2015                                 i = vpd[index];
2016                                 index += 1;
2017                                 j = 0;
2018                                 Length -= (3+i);
2019                                 while(i--) {
2020                                         phba->ProgramType[j++] = vpd[index++];
2021                                         if (j == 255)
2022                                                 break;
2023                                 }
2024                                 phba->ProgramType[j] = 0;
2025                                 continue;
2026                         }
2027                         else if ((vpd[index] == 'V') && (vpd[index+1] == '4')) {
2028                                 phba->vpd_flag |= VPD_PORT;
2029                                 index += 2;
2030                                 i = vpd[index];
2031                                 index += 1;
2032                                 j = 0;
2033                                 Length -= (3+i);
2034                                 while(i--) {
2035                                         if ((phba->sli_rev == LPFC_SLI_REV4) &&
2036                                             (phba->sli4_hba.pport_name_sta ==
2037                                              LPFC_SLI4_PPNAME_GET)) {
2038                                                 j++;
2039                                                 index++;
2040                                         } else
2041                                                 phba->Port[j++] = vpd[index++];
2042                                         if (j == 19)
2043                                                 break;
2044                                 }
2045                                 if ((phba->sli_rev != LPFC_SLI_REV4) ||
2046                                     (phba->sli4_hba.pport_name_sta ==
2047                                      LPFC_SLI4_PPNAME_NON))
2048                                         phba->Port[j] = 0;
2049                                 continue;
2050                         }
2051                         else {
2052                                 index += 2;
2053                                 i = vpd[index];
2054                                 index += 1;
2055                                 index += i;
2056                                 Length -= (3 + i);
2057                         }
2058                 }
2059                 finished = 0;
2060                 break;
2061                 case 0x78:
2062                         finished = 1;
2063                         break;
2064                 default:
2065                         index ++;
2066                         break;
2067                 }
2068         }
2069 
2070         return(1);
2071 }
2072 
2073 /**
2074  * lpfc_get_hba_model_desc - Retrieve HBA device model name and description
2075  * @phba: pointer to lpfc hba data structure.
2076  * @mdp: pointer to the data structure to hold the derived model name.
2077  * @descp: pointer to the data structure to hold the derived description.
2078  *
2079  * This routine retrieves HBA's description based on its registered PCI device
2080  * ID. The @descp passed into this function points to an array of 256 chars. It
2081  * shall be returned with the model name, maximum speed, and the host bus type.
2082  * The @mdp passed into this function points to an array of 80 chars. When the
2083  * function returns, the @mdp will be filled with the model name.
2084  **/
2085 static void
2086 lpfc_get_hba_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp)
2087 {
2088         lpfc_vpd_t *vp;
2089         uint16_t dev_id = phba->pcidev->device;
2090         int max_speed;
2091         int GE = 0;
2092         int oneConnect = 0; /* default is not a oneConnect */
2093         struct {
2094                 char *name;
2095                 char *bus;
2096                 char *function;
2097         } m = {"<Unknown>", "", ""};
2098 
2099         if (mdp && mdp[0] != '\0'
2100                 && descp && descp[0] != '\0')
2101                 return;
2102 
2103         if (phba->lmt & LMT_32Gb)
2104                 max_speed = 32;
2105         else if (phba->lmt & LMT_16Gb)
2106                 max_speed = 16;
2107         else if (phba->lmt & LMT_10Gb)
2108                 max_speed = 10;
2109         else if (phba->lmt & LMT_8Gb)
2110                 max_speed = 8;
2111         else if (phba->lmt & LMT_4Gb)
2112                 max_speed = 4;
2113         else if (phba->lmt & LMT_2Gb)
2114                 max_speed = 2;
2115         else if (phba->lmt & LMT_1Gb)
2116                 max_speed = 1;
2117         else
2118                 max_speed = 0;
2119 
2120         vp = &phba->vpd;
2121 
2122         switch (dev_id) {
2123         case PCI_DEVICE_ID_FIREFLY:
2124                 m = (typeof(m)){"LP6000", "PCI",
2125                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2126                 break;
2127         case PCI_DEVICE_ID_SUPERFLY:
2128                 if (vp->rev.biuRev >= 1 && vp->rev.biuRev <= 3)
2129                         m = (typeof(m)){"LP7000", "PCI", ""};
2130                 else
2131                         m = (typeof(m)){"LP7000E", "PCI", ""};
2132                 m.function = "Obsolete, Unsupported Fibre Channel Adapter";
2133                 break;
2134         case PCI_DEVICE_ID_DRAGONFLY:
2135                 m = (typeof(m)){"LP8000", "PCI",
2136                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2137                 break;
2138         case PCI_DEVICE_ID_CENTAUR:
2139                 if (FC_JEDEC_ID(vp->rev.biuRev) == CENTAUR_2G_JEDEC_ID)
2140                         m = (typeof(m)){"LP9002", "PCI", ""};
2141                 else
2142                         m = (typeof(m)){"LP9000", "PCI", ""};
2143                 m.function = "Obsolete, Unsupported Fibre Channel Adapter";
2144                 break;
2145         case PCI_DEVICE_ID_RFLY:
2146                 m = (typeof(m)){"LP952", "PCI",
2147                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2148                 break;
2149         case PCI_DEVICE_ID_PEGASUS:
2150                 m = (typeof(m)){"LP9802", "PCI-X",
2151                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2152                 break;
2153         case PCI_DEVICE_ID_THOR:
2154                 m = (typeof(m)){"LP10000", "PCI-X",
2155                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2156                 break;
2157         case PCI_DEVICE_ID_VIPER:
2158                 m = (typeof(m)){"LPX1000",  "PCI-X",
2159                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2160                 break;
2161         case PCI_DEVICE_ID_PFLY:
2162                 m = (typeof(m)){"LP982", "PCI-X",
2163                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2164                 break;
2165         case PCI_DEVICE_ID_TFLY:
2166                 m = (typeof(m)){"LP1050", "PCI-X",
2167                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2168                 break;
2169         case PCI_DEVICE_ID_HELIOS:
2170                 m = (typeof(m)){"LP11000", "PCI-X2",
2171                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2172                 break;
2173         case PCI_DEVICE_ID_HELIOS_SCSP:
2174                 m = (typeof(m)){"LP11000-SP", "PCI-X2",
2175                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2176                 break;
2177         case PCI_DEVICE_ID_HELIOS_DCSP:
2178                 m = (typeof(m)){"LP11002-SP",  "PCI-X2",
2179                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2180                 break;
2181         case PCI_DEVICE_ID_NEPTUNE:
2182                 m = (typeof(m)){"LPe1000", "PCIe",
2183                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2184                 break;
2185         case PCI_DEVICE_ID_NEPTUNE_SCSP:
2186                 m = (typeof(m)){"LPe1000-SP", "PCIe",
2187                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2188                 break;
2189         case PCI_DEVICE_ID_NEPTUNE_DCSP:
2190                 m = (typeof(m)){"LPe1002-SP", "PCIe",
2191                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2192                 break;
2193         case PCI_DEVICE_ID_BMID:
2194                 m = (typeof(m)){"LP1150", "PCI-X2", "Fibre Channel Adapter"};
2195                 break;
2196         case PCI_DEVICE_ID_BSMB:
2197                 m = (typeof(m)){"LP111", "PCI-X2",
2198                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2199                 break;
2200         case PCI_DEVICE_ID_ZEPHYR:
2201                 m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
2202                 break;
2203         case PCI_DEVICE_ID_ZEPHYR_SCSP:
2204                 m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
2205                 break;
2206         case PCI_DEVICE_ID_ZEPHYR_DCSP:
2207                 m = (typeof(m)){"LP2105", "PCIe", "FCoE Adapter"};
2208                 GE = 1;
2209                 break;
2210         case PCI_DEVICE_ID_ZMID:
2211                 m = (typeof(m)){"LPe1150", "PCIe", "Fibre Channel Adapter"};
2212                 break;
2213         case PCI_DEVICE_ID_ZSMB:
2214                 m = (typeof(m)){"LPe111", "PCIe", "Fibre Channel Adapter"};
2215                 break;
2216         case PCI_DEVICE_ID_LP101:
2217                 m = (typeof(m)){"LP101", "PCI-X",
2218                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2219                 break;
2220         case PCI_DEVICE_ID_LP10000S:
2221                 m = (typeof(m)){"LP10000-S", "PCI",
2222                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2223                 break;
2224         case PCI_DEVICE_ID_LP11000S:
2225                 m = (typeof(m)){"LP11000-S", "PCI-X2",
2226                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2227                 break;
2228         case PCI_DEVICE_ID_LPE11000S:
2229                 m = (typeof(m)){"LPe11000-S", "PCIe",
2230                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2231                 break;
2232         case PCI_DEVICE_ID_SAT:
2233                 m = (typeof(m)){"LPe12000", "PCIe", "Fibre Channel Adapter"};
2234                 break;
2235         case PCI_DEVICE_ID_SAT_MID:
2236                 m = (typeof(m)){"LPe1250", "PCIe", "Fibre Channel Adapter"};
2237                 break;
2238         case PCI_DEVICE_ID_SAT_SMB:
2239                 m = (typeof(m)){"LPe121", "PCIe", "Fibre Channel Adapter"};
2240                 break;
2241         case PCI_DEVICE_ID_SAT_DCSP:
2242                 m = (typeof(m)){"LPe12002-SP", "PCIe", "Fibre Channel Adapter"};
2243                 break;
2244         case PCI_DEVICE_ID_SAT_SCSP:
2245                 m = (typeof(m)){"LPe12000-SP", "PCIe", "Fibre Channel Adapter"};
2246                 break;
2247         case PCI_DEVICE_ID_SAT_S:
2248                 m = (typeof(m)){"LPe12000-S", "PCIe", "Fibre Channel Adapter"};
2249                 break;
2250         case PCI_DEVICE_ID_HORNET:
2251                 m = (typeof(m)){"LP21000", "PCIe",
2252                                 "Obsolete, Unsupported FCoE Adapter"};
2253                 GE = 1;
2254                 break;
2255         case PCI_DEVICE_ID_PROTEUS_VF:
2256                 m = (typeof(m)){"LPev12000", "PCIe IOV",
2257                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2258                 break;
2259         case PCI_DEVICE_ID_PROTEUS_PF:
2260                 m = (typeof(m)){"LPev12000", "PCIe IOV",
2261                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2262                 break;
2263         case PCI_DEVICE_ID_PROTEUS_S:
2264                 m = (typeof(m)){"LPemv12002-S", "PCIe IOV",
2265                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2266                 break;
2267         case PCI_DEVICE_ID_TIGERSHARK:
2268                 oneConnect = 1;
2269                 m = (typeof(m)){"OCe10100", "PCIe", "FCoE"};
2270                 break;
2271         case PCI_DEVICE_ID_TOMCAT:
2272                 oneConnect = 1;
2273                 m = (typeof(m)){"OCe11100", "PCIe", "FCoE"};
2274                 break;
2275         case PCI_DEVICE_ID_FALCON:
2276                 m = (typeof(m)){"LPSe12002-ML1-E", "PCIe",
2277                                 "EmulexSecure Fibre"};
2278                 break;
2279         case PCI_DEVICE_ID_BALIUS:
2280                 m = (typeof(m)){"LPVe12002", "PCIe Shared I/O",
2281                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2282                 break;
2283         case PCI_DEVICE_ID_LANCER_FC:
2284                 m = (typeof(m)){"LPe16000", "PCIe", "Fibre Channel Adapter"};
2285                 break;
2286         case PCI_DEVICE_ID_LANCER_FC_VF:
2287                 m = (typeof(m)){"LPe16000", "PCIe",
2288                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2289                 break;
2290         case PCI_DEVICE_ID_LANCER_FCOE:
2291                 oneConnect = 1;
2292                 m = (typeof(m)){"OCe15100", "PCIe", "FCoE"};
2293                 break;
2294         case PCI_DEVICE_ID_LANCER_FCOE_VF:
2295                 oneConnect = 1;
2296                 m = (typeof(m)){"OCe15100", "PCIe",
2297                                 "Obsolete, Unsupported FCoE"};
2298                 break;
2299         case PCI_DEVICE_ID_LANCER_G6_FC:
2300                 m = (typeof(m)){"LPe32000", "PCIe", "Fibre Channel Adapter"};
2301                 break;
2302         case PCI_DEVICE_ID_SKYHAWK:
2303         case PCI_DEVICE_ID_SKYHAWK_VF:
2304                 oneConnect = 1;
2305                 m = (typeof(m)){"OCe14000", "PCIe", "FCoE"};
2306                 break;
2307         default:
2308                 m = (typeof(m)){"Unknown", "", ""};
2309                 break;
2310         }
2311 
2312         if (mdp && mdp[0] == '\0')
2313                 snprintf(mdp, 79,"%s", m.name);
2314         /*
2315          * oneConnect hba requires special processing, they are all initiators
2316          * and we put the port number on the end
2317          */
2318         if (descp && descp[0] == '\0') {
2319                 if (oneConnect)
2320                         snprintf(descp, 255,
2321                                 "Emulex OneConnect %s, %s Initiator %s",
2322                                 m.name, m.function,
2323                                 phba->Port);
2324                 else if (max_speed == 0)
2325                         snprintf(descp, 255,
2326                                 "Emulex %s %s %s",
2327                                 m.name, m.bus, m.function);
2328                 else
2329                         snprintf(descp, 255,
2330                                 "Emulex %s %d%s %s %s",
2331                                 m.name, max_speed, (GE) ? "GE" : "Gb",
2332                                 m.bus, m.function);
2333         }
2334 }
2335 
2336 /**
2337  * lpfc_post_buffer - Post IOCB(s) with DMA buffer descriptor(s) to a IOCB ring
2338  * @phba: pointer to lpfc hba data structure.
2339  * @pring: pointer to a IOCB ring.
2340  * @cnt: the number of IOCBs to be posted to the IOCB ring.
2341  *
2342  * This routine posts a given number of IOCBs with the associated DMA buffer
2343  * descriptors specified by the cnt argument to the given IOCB ring.
2344  *
2345  * Return codes
2346  *   The number of IOCBs NOT able to be posted to the IOCB ring.
2347  **/
2348 int
2349 lpfc_post_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, int cnt)
2350 {
2351         IOCB_t *icmd;
2352         struct lpfc_iocbq *iocb;
2353         struct lpfc_dmabuf *mp1, *mp2;
2354 
2355         cnt += pring->missbufcnt;
2356 
2357         /* While there are buffers to post */
2358         while (cnt > 0) {
2359                 /* Allocate buffer for  command iocb */
2360                 iocb = lpfc_sli_get_iocbq(phba);
2361                 if (iocb == NULL) {
2362                         pring->missbufcnt = cnt;
2363                         return cnt;
2364                 }
2365                 icmd = &iocb->iocb;
2366 
2367                 /* 2 buffers can be posted per command */
2368                 /* Allocate buffer to post */
2369                 mp1 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2370                 if (mp1)
2371                     mp1->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &mp1->phys);
2372                 if (!mp1 || !mp1->virt) {
2373                         kfree(mp1);
2374                         lpfc_sli_release_iocbq(phba, iocb);
2375                         pring->missbufcnt = cnt;
2376                         return cnt;
2377                 }
2378 
2379                 INIT_LIST_HEAD(&mp1->list);
2380                 /* Allocate buffer to post */
2381                 if (cnt > 1) {
2382                         mp2 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2383                         if (mp2)
2384                                 mp2->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
2385                                                             &mp2->phys);
2386                         if (!mp2 || !mp2->virt) {
2387                                 kfree(mp2);
2388                                 lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2389                                 kfree(mp1);
2390                                 lpfc_sli_release_iocbq(phba, iocb);
2391                                 pring->missbufcnt = cnt;
2392                                 return cnt;
2393                         }
2394 
2395                         INIT_LIST_HEAD(&mp2->list);
2396                 } else {
2397                         mp2 = NULL;
2398                 }
2399 
2400                 icmd->un.cont64[0].addrHigh = putPaddrHigh(mp1->phys);
2401                 icmd->un.cont64[0].addrLow = putPaddrLow(mp1->phys);
2402                 icmd->un.cont64[0].tus.f.bdeSize = FCELSSIZE;
2403                 icmd->ulpBdeCount = 1;
2404                 cnt--;
2405                 if (mp2) {
2406                         icmd->un.cont64[1].addrHigh = putPaddrHigh(mp2->phys);
2407                         icmd->un.cont64[1].addrLow = putPaddrLow(mp2->phys);
2408                         icmd->un.cont64[1].tus.f.bdeSize = FCELSSIZE;
2409                         cnt--;
2410                         icmd->ulpBdeCount = 2;
2411                 }
2412 
2413                 icmd->ulpCommand = CMD_QUE_RING_BUF64_CN;
2414                 icmd->ulpLe = 1;
2415 
2416                 if (lpfc_sli_issue_iocb(phba, pring->ringno, iocb, 0) ==
2417                     IOCB_ERROR) {
2418                         lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2419                         kfree(mp1);
2420                         cnt++;
2421                         if (mp2) {
2422                                 lpfc_mbuf_free(phba, mp2->virt, mp2->phys);
2423                                 kfree(mp2);
2424                                 cnt++;
2425                         }
2426                         lpfc_sli_release_iocbq(phba, iocb);
2427                         pring->missbufcnt = cnt;
2428                         return cnt;
2429                 }
2430                 lpfc_sli_ringpostbuf_put(phba, pring, mp1);
2431                 if (mp2)
2432                         lpfc_sli_ringpostbuf_put(phba, pring, mp2);
2433         }
2434         pring->missbufcnt = 0;
2435         return 0;
2436 }
2437 
2438 /**
2439  * lpfc_post_rcv_buf - Post the initial receive IOCB buffers to ELS ring
2440  * @phba: pointer to lpfc hba data structure.
2441  *
2442  * This routine posts initial receive IOCB buffers to the ELS ring. The
2443  * current number of initial IOCB buffers specified by LPFC_BUF_RING0 is
2444  * set to 64 IOCBs.
2445  *
2446  * Return codes
2447  *   0 - success (currently always success)
2448  **/
2449 static int
2450 lpfc_post_rcv_buf(struct lpfc_hba *phba)
2451 {
2452         struct lpfc_sli *psli = &phba->sli;
2453 
2454         /* Ring 0, ELS / CT buffers */
2455         lpfc_post_buffer(phba, &psli->ring[LPFC_ELS_RING], LPFC_BUF_RING0);
2456         /* Ring 2 - FCP no buffers needed */
2457 
2458         return 0;
2459 }
2460 
2461 #define S(N,V) (((V)<<(N))|((V)>>(32-(N))))
2462 
2463 /**
2464  * lpfc_sha_init - Set up initial array of hash table entries
2465  * @HashResultPointer: pointer to an array as hash table.
2466  *
2467  * This routine sets up the initial values to the array of hash table entries
2468  * for the LC HBAs.
2469  **/
2470 static void
2471 lpfc_sha_init(uint32_t * HashResultPointer)
2472 {
2473         HashResultPointer[0] = 0x67452301;
2474         HashResultPointer[1] = 0xEFCDAB89;
2475         HashResultPointer[2] = 0x98BADCFE;
2476         HashResultPointer[3] = 0x10325476;
2477         HashResultPointer[4] = 0xC3D2E1F0;
2478 }
2479 
2480 /**
2481  * lpfc_sha_iterate - Iterate initial hash table with the working hash table
2482  * @HashResultPointer: pointer to an initial/result hash table.
2483  * @HashWorkingPointer: pointer to an working hash table.
2484  *
2485  * This routine iterates an initial hash table pointed by @HashResultPointer
2486  * with the values from the working hash table pointeed by @HashWorkingPointer.
2487  * The results are putting back to the initial hash table, returned through
2488  * the @HashResultPointer as the result hash table.
2489  **/
2490 static void
2491 lpfc_sha_iterate(uint32_t * HashResultPointer, uint32_t * HashWorkingPointer)
2492 {
2493         int t;
2494         uint32_t TEMP;
2495         uint32_t A, B, C, D, E;
2496         t = 16;
2497         do {
2498                 HashWorkingPointer[t] =
2499                     S(1,
2500                       HashWorkingPointer[t - 3] ^ HashWorkingPointer[t -
2501                                                                      8] ^
2502                       HashWorkingPointer[t - 14] ^ HashWorkingPointer[t - 16]);
2503         } while (++t <= 79);
2504         t = 0;
2505         A = HashResultPointer[0];
2506         B = HashResultPointer[1];
2507         C = HashResultPointer[2];
2508         D = HashResultPointer[3];
2509         E = HashResultPointer[4];
2510 
2511         do {
2512                 if (t < 20) {
2513                         TEMP = ((B & C) | ((~B) & D)) + 0x5A827999;
2514                 } else if (t < 40) {
2515                         TEMP = (B ^ C ^ D) + 0x6ED9EBA1;
2516                 } else if (t < 60) {
2517                         TEMP = ((B & C) | (B & D) | (C & D)) + 0x8F1BBCDC;
2518                 } else {
2519                         TEMP = (B ^ C ^ D) + 0xCA62C1D6;
2520                 }
2521                 TEMP += S(5, A) + E + HashWorkingPointer[t];
2522                 E = D;
2523                 D = C;
2524                 C = S(30, B);
2525                 B = A;
2526                 A = TEMP;
2527         } while (++t <= 79);
2528 
2529         HashResultPointer[0] += A;
2530         HashResultPointer[1] += B;
2531         HashResultPointer[2] += C;
2532         HashResultPointer[3] += D;
2533         HashResultPointer[4] += E;
2534 
2535 }
2536 
2537 /**
2538  * lpfc_challenge_key - Create challenge key based on WWPN of the HBA
2539  * @RandomChallenge: pointer to the entry of host challenge random number array.
2540  * @HashWorking: pointer to the entry of the working hash array.
2541  *
2542  * This routine calculates the working hash array referred by @HashWorking
2543  * from the challenge random numbers associated with the host, referred by
2544  * @RandomChallenge. The result is put into the entry of the working hash
2545  * array and returned by reference through @HashWorking.
2546  **/
2547 static void
2548 lpfc_challenge_key(uint32_t * RandomChallenge, uint32_t * HashWorking)
2549 {
2550         *HashWorking = (*RandomChallenge ^ *HashWorking);
2551 }
2552 
2553 /**
2554  * lpfc_hba_init - Perform special handling for LC HBA initialization
2555  * @phba: pointer to lpfc hba data structure.
2556  * @hbainit: pointer to an array of unsigned 32-bit integers.
2557  *
2558  * This routine performs the special handling for LC HBA initialization.
2559  **/
2560 void
2561 lpfc_hba_init(struct lpfc_hba *phba, uint32_t *hbainit)
2562 {
2563         int t;
2564         uint32_t *HashWorking;
2565         uint32_t *pwwnn = (uint32_t *) phba->wwnn;
2566 
2567         HashWorking = kcalloc(80, sizeof(uint32_t), GFP_KERNEL);
2568         if (!HashWorking)
2569                 return;
2570 
2571         HashWorking[0] = HashWorking[78] = *pwwnn++;
2572         HashWorking[1] = HashWorking[79] = *pwwnn;
2573 
2574         for (t = 0; t < 7; t++)
2575                 lpfc_challenge_key(phba->RandomData + t, HashWorking + t);
2576 
2577         lpfc_sha_init(hbainit);
2578         lpfc_sha_iterate(hbainit, HashWorking);
2579         kfree(HashWorking);
2580 }
2581 
2582 /**
2583  * lpfc_cleanup - Performs vport cleanups before deleting a vport
2584  * @vport: pointer to a virtual N_Port data structure.
2585  *
2586  * This routine performs the necessary cleanups before deleting the @vport.
2587  * It invokes the discovery state machine to perform necessary state
2588  * transitions and to release the ndlps associated with the @vport. Note,
2589  * the physical port is treated as @vport 0.
2590  **/
2591 void
2592 lpfc_cleanup(struct lpfc_vport *vport)
2593 {
2594         struct lpfc_hba   *phba = vport->phba;
2595         struct lpfc_nodelist *ndlp, *next_ndlp;
2596         int i = 0;
2597 
2598         if (phba->link_state > LPFC_LINK_DOWN)
2599                 lpfc_port_link_failure(vport);
2600 
2601         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
2602                 if (!NLP_CHK_NODE_ACT(ndlp)) {
2603                         ndlp = lpfc_enable_node(vport, ndlp,
2604                                                 NLP_STE_UNUSED_NODE);
2605                         if (!ndlp)
2606                                 continue;
2607                         spin_lock_irq(&phba->ndlp_lock);
2608                         NLP_SET_FREE_REQ(ndlp);
2609                         spin_unlock_irq(&phba->ndlp_lock);
2610                         /* Trigger the release of the ndlp memory */
2611                         lpfc_nlp_put(ndlp);
2612                         continue;
2613                 }
2614                 spin_lock_irq(&phba->ndlp_lock);
2615                 if (NLP_CHK_FREE_REQ(ndlp)) {
2616                         /* The ndlp should not be in memory free mode already */
2617                         spin_unlock_irq(&phba->ndlp_lock);
2618                         continue;
2619                 } else
2620                         /* Indicate request for freeing ndlp memory */
2621                         NLP_SET_FREE_REQ(ndlp);
2622                 spin_unlock_irq(&phba->ndlp_lock);
2623 
2624                 if (vport->port_type != LPFC_PHYSICAL_PORT &&
2625                     ndlp->nlp_DID == Fabric_DID) {
2626                         /* Just free up ndlp with Fabric_DID for vports */
2627                         lpfc_nlp_put(ndlp);
2628                         continue;
2629                 }
2630 
2631                 /* take care of nodes in unused state before the state
2632                  * machine taking action.
2633                  */
2634                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
2635                         lpfc_nlp_put(ndlp);
2636                         continue;
2637                 }
2638 
2639                 if (ndlp->nlp_type & NLP_FABRIC)
2640                         lpfc_disc_state_machine(vport, ndlp, NULL,
2641                                         NLP_EVT_DEVICE_RECOVERY);
2642 
2643                 lpfc_disc_state_machine(vport, ndlp, NULL,
2644                                              NLP_EVT_DEVICE_RM);
2645         }
2646 
2647         /* At this point, ALL ndlp's should be gone
2648          * because of the previous NLP_EVT_DEVICE_RM.
2649          * Lets wait for this to happen, if needed.
2650          */
2651         while (!list_empty(&vport->fc_nodes)) {
2652                 if (i++ > 3000) {
2653                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2654                                 "0233 Nodelist not empty\n");
2655                         list_for_each_entry_safe(ndlp, next_ndlp,
2656                                                 &vport->fc_nodes, nlp_listp) {
2657                                 lpfc_printf_vlog(ndlp->vport, KERN_ERR,
2658                                                 LOG_NODE,
2659                                                 "0282 did:x%x ndlp:x%p "
2660                                                 "usgmap:x%x refcnt:%d\n",
2661                                                 ndlp->nlp_DID, (void *)ndlp,
2662                                                 ndlp->nlp_usg_map,
2663                                                 atomic_read(
2664                                                         &ndlp->kref.refcount));
2665                         }
2666                         break;
2667                 }
2668 
2669                 /* Wait for any activity on ndlps to settle */
2670                 msleep(10);
2671         }
2672         lpfc_cleanup_vports_rrqs(vport, NULL);
2673 }
2674 
2675 /**
2676  * lpfc_stop_vport_timers - Stop all the timers associated with a vport
2677  * @vport: pointer to a virtual N_Port data structure.
2678  *
2679  * This routine stops all the timers associated with a @vport. This function
2680  * is invoked before disabling or deleting a @vport. Note that the physical
2681  * port is treated as @vport 0.
2682  **/
2683 void
2684 lpfc_stop_vport_timers(struct lpfc_vport *vport)
2685 {
2686         del_timer_sync(&vport->els_tmofunc);
2687         del_timer_sync(&vport->delayed_disc_tmo);
2688         lpfc_can_disctmo(vport);
2689         return;
2690 }
2691 
2692 /**
2693  * __lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
2694  * @phba: pointer to lpfc hba data structure.
2695  *
2696  * This routine stops the SLI4 FCF rediscover wait timer if it's on. The
2697  * caller of this routine should already hold the host lock.
2698  **/
2699 void
2700 __lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
2701 {
2702         /* Clear pending FCF rediscovery wait flag */
2703         phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
2704 
2705         /* Now, try to stop the timer */
2706         del_timer(&phba->fcf.redisc_wait);
2707 }
2708 
2709 /**
2710  * lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
2711  * @phba: pointer to lpfc hba data structure.
2712  *
2713  * This routine stops the SLI4 FCF rediscover wait timer if it's on. It
2714  * checks whether the FCF rediscovery wait timer is pending with the host
2715  * lock held before proceeding with disabling the timer and clearing the
2716  * wait timer pendig flag.
2717  **/
2718 void
2719 lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
2720 {
2721         spin_lock_irq(&phba->hbalock);
2722         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
2723                 /* FCF rediscovery timer already fired or stopped */
2724                 spin_unlock_irq(&phba->hbalock);
2725                 return;
2726         }
2727         __lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
2728         /* Clear failover in progress flags */
2729         phba->fcf.fcf_flag &= ~(FCF_DEAD_DISC | FCF_ACVL_DISC);
2730         spin_unlock_irq(&phba->hbalock);
2731 }
2732 
2733 /**
2734  * lpfc_stop_hba_timers - Stop all the timers associated with an HBA
2735  * @phba: pointer to lpfc hba data structure.
2736  *
2737  * This routine stops all the timers associated with a HBA. This function is
2738  * invoked before either putting a HBA offline or unloading the driver.
2739  **/
2740 void
2741 lpfc_stop_hba_timers(struct lpfc_hba *phba)
2742 {
2743         lpfc_stop_vport_timers(phba->pport);
2744         del_timer_sync(&phba->sli.mbox_tmo);
2745         del_timer_sync(&phba->fabric_block_timer);
2746         del_timer_sync(&phba->eratt_poll);
2747         del_timer_sync(&phba->hb_tmofunc);
2748         if (phba->sli_rev == LPFC_SLI_REV4) {
2749                 del_timer_sync(&phba->rrq_tmr);
2750                 phba->hba_flag &= ~HBA_RRQ_ACTIVE;
2751         }
2752         phba->hb_outstanding = 0;
2753 
2754         switch (phba->pci_dev_grp) {
2755         case LPFC_PCI_DEV_LP:
2756                 /* Stop any LightPulse device specific driver timers */
2757                 del_timer_sync(&phba->fcp_poll_timer);
2758                 break;
2759         case LPFC_PCI_DEV_OC:
2760                 /* Stop any OneConnect device sepcific driver timers */
2761                 lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
2762                 break;
2763         default:
2764                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2765                                 "0297 Invalid device group (x%x)\n",
2766                                 phba->pci_dev_grp);
2767                 break;
2768         }
2769         return;
2770 }
2771 
2772 /**
2773  * lpfc_block_mgmt_io - Mark a HBA's management interface as blocked
2774  * @phba: pointer to lpfc hba data structure.
2775  *
2776  * This routine marks a HBA's management interface as blocked. Once the HBA's
2777  * management interface is marked as blocked, all the user space access to
2778  * the HBA, whether they are from sysfs interface or libdfc interface will
2779  * all be blocked. The HBA is set to block the management interface when the
2780  * driver prepares the HBA interface for online or offline.
2781  **/
2782 static void
2783 lpfc_block_mgmt_io(struct lpfc_hba *phba, int mbx_action)
2784 {
2785         unsigned long iflag;
2786         uint8_t actcmd = MBX_HEARTBEAT;
2787         unsigned long timeout;
2788 
2789         spin_lock_irqsave(&phba->hbalock, iflag);
2790         phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO;
2791         spin_unlock_irqrestore(&phba->hbalock, iflag);
2792         if (mbx_action == LPFC_MBX_NO_WAIT)
2793                 return;
2794         timeout = msecs_to_jiffies(LPFC_MBOX_TMO * 1000) + jiffies;
2795         spin_lock_irqsave(&phba->hbalock, iflag);
2796         if (phba->sli.mbox_active) {
2797                 actcmd = phba->sli.mbox_active->u.mb.mbxCommand;
2798                 /* Determine how long we might wait for the active mailbox
2799                  * command to be gracefully completed by firmware.
2800                  */
2801                 timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba,
2802                                 phba->sli.mbox_active) * 1000) + jiffies;
2803         }
2804         spin_unlock_irqrestore(&phba->hbalock, iflag);
2805 
2806         /* Wait for the outstnading mailbox command to complete */
2807         while (phba->sli.mbox_active) {
2808                 /* Check active mailbox complete status every 2ms */
2809                 msleep(2);
2810                 if (time_after(jiffies, timeout)) {
2811                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2812                                 "2813 Mgmt IO is Blocked %x "
2813                                 "- mbox cmd %x still active\n",
2814                                 phba->sli.sli_flag, actcmd);
2815                         break;
2816                 }
2817         }
2818 }
2819 
2820 /**
2821  * lpfc_sli4_node_prep - Assign RPIs for active nodes.
2822  * @phba: pointer to lpfc hba data structure.
2823  *
2824  * Allocate RPIs for all active remote nodes. This is needed whenever
2825  * an SLI4 adapter is reset and the driver is not unloading. Its purpose
2826  * is to fixup the temporary rpi assignments.
2827  **/
2828 void
2829 lpfc_sli4_node_prep(struct lpfc_hba *phba)
2830 {
2831         struct lpfc_nodelist  *ndlp, *next_ndlp;
2832         struct lpfc_vport **vports;
2833         int i;
2834 
2835         if (phba->sli_rev != LPFC_SLI_REV4)
2836                 return;
2837 
2838         vports = lpfc_create_vport_work_array(phba);
2839         if (vports != NULL) {
2840                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2841                         if (vports[i]->load_flag & FC_UNLOADING)
2842                                 continue;
2843 
2844                         list_for_each_entry_safe(ndlp, next_ndlp,
2845                                                  &vports[i]->fc_nodes,
2846                                                  nlp_listp) {
2847                                 if (NLP_CHK_NODE_ACT(ndlp)) {
2848                                         ndlp->nlp_rpi =
2849                                                 lpfc_sli4_alloc_rpi(phba);
2850                                         lpfc_printf_vlog(ndlp->vport, KERN_INFO,
2851                                                          LOG_NODE,
2852                                                          "0009 rpi:%x DID:%x "
2853                                                          "flg:%x map:%x %p\n",
2854                                                          ndlp->nlp_rpi,
2855                                                          ndlp->nlp_DID,
2856                                                          ndlp->nlp_flag,
2857                                                          ndlp->nlp_usg_map,
2858                                                          ndlp);
2859                                 }
2860                         }
2861                 }
2862         }
2863         lpfc_destroy_vport_work_array(phba, vports);
2864 }
2865 
2866 /**
2867  * lpfc_online - Initialize and bring a HBA online
2868  * @phba: pointer to lpfc hba data structure.
2869  *
2870  * This routine initializes the HBA and brings a HBA online. During this
2871  * process, the management interface is blocked to prevent user space access
2872  * to the HBA interfering with the driver initialization.
2873  *
2874  * Return codes
2875  *   0 - successful
2876  *   1 - failed
2877  **/
2878 int
2879 lpfc_online(struct lpfc_hba *phba)
2880 {
2881         struct lpfc_vport *vport;
2882         struct lpfc_vport **vports;
2883         int i;
2884         bool vpis_cleared = false;
2885 
2886         if (!phba)
2887                 return 0;
2888         vport = phba->pport;
2889 
2890         if (!(vport->fc_flag & FC_OFFLINE_MODE))
2891                 return 0;
2892 
2893         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2894                         "0458 Bring Adapter online\n");
2895 
2896         lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT);
2897 
2898         if (!lpfc_sli_queue_setup(phba)) {
2899                 lpfc_unblock_mgmt_io(phba);
2900                 return 1;
2901         }
2902 
2903         if (phba->sli_rev == LPFC_SLI_REV4) {
2904                 if (lpfc_sli4_hba_setup(phba)) { /* Initialize SLI4 HBA */
2905                         lpfc_unblock_mgmt_io(phba);
2906                         return 1;
2907                 }
2908                 spin_lock_irq(&phba->hbalock);
2909                 if (!phba->sli4_hba.max_cfg_param.vpi_used)
2910                         vpis_cleared = true;
2911                 spin_unlock_irq(&phba->hbalock);
2912         } else {
2913                 if (lpfc_sli_hba_setup(phba)) { /* Initialize SLI2/SLI3 HBA */
2914                         lpfc_unblock_mgmt_io(phba);
2915                         return 1;
2916                 }
2917         }
2918 
2919         vports = lpfc_create_vport_work_array(phba);
2920         if (vports != NULL) {
2921                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2922                         struct Scsi_Host *shost;
2923                         shost = lpfc_shost_from_vport(vports[i]);
2924                         spin_lock_irq(shost->host_lock);
2925                         vports[i]->fc_flag &= ~FC_OFFLINE_MODE;
2926                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2927                                 vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
2928                         if (phba->sli_rev == LPFC_SLI_REV4) {
2929                                 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
2930                                 if ((vpis_cleared) &&
2931                                     (vports[i]->port_type !=
2932                                         LPFC_PHYSICAL_PORT))
2933                                         vports[i]->vpi = 0;
2934                         }
2935                         spin_unlock_irq(shost->host_lock);
2936                 }
2937         }
2938         lpfc_destroy_vport_work_array(phba, vports);
2939 
2940         lpfc_unblock_mgmt_io(phba);
2941         return 0;
2942 }
2943 
2944 /**
2945  * lpfc_unblock_mgmt_io - Mark a HBA's management interface to be not blocked
2946  * @phba: pointer to lpfc hba data structure.
2947  *
2948  * This routine marks a HBA's management interface as not blocked. Once the
2949  * HBA's management interface is marked as not blocked, all the user space
2950  * access to the HBA, whether they are from sysfs interface or libdfc
2951  * interface will be allowed. The HBA is set to block the management interface
2952  * when the driver prepares the HBA interface for online or offline and then
2953  * set to unblock the management interface afterwards.
2954  **/
2955 void
2956 lpfc_unblock_mgmt_io(struct lpfc_hba * phba)
2957 {
2958         unsigned long iflag;
2959 
2960         spin_lock_irqsave(&phba->hbalock, iflag);
2961         phba->sli.sli_flag &= ~LPFC_BLOCK_MGMT_IO;
2962         spin_unlock_irqrestore(&phba->hbalock, iflag);
2963 }
2964 
2965 /**
2966  * lpfc_offline_prep - Prepare a HBA to be brought offline
2967  * @phba: pointer to lpfc hba data structure.
2968  *
2969  * This routine is invoked to prepare a HBA to be brought offline. It performs
2970  * unregistration login to all the nodes on all vports and flushes the mailbox
2971  * queue to make it ready to be brought offline.
2972  **/
2973 void
2974 lpfc_offline_prep(struct lpfc_hba *phba, int mbx_action)
2975 {
2976         struct lpfc_vport *vport = phba->pport;
2977         struct lpfc_nodelist  *ndlp, *next_ndlp;
2978         struct lpfc_vport **vports;
2979         struct Scsi_Host *shost;
2980         int i;
2981 
2982         if (vport->fc_flag & FC_OFFLINE_MODE)
2983                 return;
2984 
2985         lpfc_block_mgmt_io(phba, mbx_action);
2986 
2987         lpfc_linkdown(phba);
2988 
2989         /* Issue an unreg_login to all nodes on all vports */
2990         vports = lpfc_create_vport_work_array(phba);
2991         if (vports != NULL) {
2992                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2993                         if (vports[i]->load_flag & FC_UNLOADING)
2994                                 continue;
2995                         shost = lpfc_shost_from_vport(vports[i]);
2996                         spin_lock_irq(shost->host_lock);
2997                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
2998                         vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
2999                         vports[i]->fc_flag &= ~FC_VFI_REGISTERED;
3000                         spin_unlock_irq(shost->host_lock);
3001 
3002                         shost = lpfc_shost_from_vport(vports[i]);
3003                         list_for_each_entry_safe(ndlp, next_ndlp,
3004                                                  &vports[i]->fc_nodes,
3005                                                  nlp_listp) {
3006                                 if (!NLP_CHK_NODE_ACT(ndlp))
3007                                         continue;
3008                                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
3009                                         continue;
3010                                 if (ndlp->nlp_type & NLP_FABRIC) {
3011                                         lpfc_disc_state_machine(vports[i], ndlp,
3012                                                 NULL, NLP_EVT_DEVICE_RECOVERY);
3013                                         lpfc_disc_state_machine(vports[i], ndlp,
3014                                                 NULL, NLP_EVT_DEVICE_RM);
3015                                 }
3016                                 spin_lock_irq(shost->host_lock);
3017                                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
3018                                 spin_unlock_irq(shost->host_lock);
3019                                 /*
3020                                  * Whenever an SLI4 port goes offline, free the
3021                                  * RPI. Get a new RPI when the adapter port
3022                                  * comes back online.
3023                                  */
3024                                 if (phba->sli_rev == LPFC_SLI_REV4) {
3025                                         lpfc_printf_vlog(ndlp->vport,
3026                                                          KERN_INFO, LOG_NODE,
3027                                                          "0011 lpfc_offline: "
3028                                                          "ndlp:x%p did %x "
3029                                                          "usgmap:x%x rpi:%x\n",
3030                                                          ndlp, ndlp->nlp_DID,
3031                                                          ndlp->nlp_usg_map,
3032                                                          ndlp->nlp_rpi);
3033 
3034                                         lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi);
3035                                 }
3036                                 lpfc_unreg_rpi(vports[i], ndlp);
3037                         }
3038                 }
3039         }
3040         lpfc_destroy_vport_work_array(phba, vports);
3041 
3042         lpfc_sli_mbox_sys_shutdown(phba, mbx_action);
3043 }
3044 
3045 /**
3046  * lpfc_offline - Bring a HBA offline
3047  * @phba: pointer to lpfc hba data structure.
3048  *
3049  * This routine actually brings a HBA offline. It stops all the timers
3050  * associated with the HBA, brings down the SLI layer, and eventually
3051  * marks the HBA as in offline state for the upper layer protocol.
3052  **/
3053 void
3054 lpfc_offline(struct lpfc_hba *phba)
3055 {
3056         struct Scsi_Host  *shost;
3057         struct lpfc_vport **vports;
3058         int i;
3059 
3060         if (phba->pport->fc_flag & FC_OFFLINE_MODE)
3061                 return;
3062 
3063         /* stop port and all timers associated with this hba */
3064         lpfc_stop_port(phba);
3065         vports = lpfc_create_vport_work_array(phba);
3066         if (vports != NULL)
3067                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
3068                         lpfc_stop_vport_timers(vports[i]);
3069         lpfc_destroy_vport_work_array(phba, vports);
3070         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3071                         "0460 Bring Adapter offline\n");
3072         /* Bring down the SLI Layer and cleanup.  The HBA is offline
3073            now.  */
3074         lpfc_sli_hba_down(phba);
3075         spin_lock_irq(&phba->hbalock);
3076         phba->work_ha = 0;
3077         spin_unlock_irq(&phba->hbalock);
3078         vports = lpfc_create_vport_work_array(phba);
3079         if (vports != NULL)
3080                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3081                         shost = lpfc_shost_from_vport(vports[i]);
3082                         spin_lock_irq(shost->host_lock);
3083                         vports[i]->work_port_events = 0;
3084                         vports[i]->fc_flag |= FC_OFFLINE_MODE;
3085                         spin_unlock_irq(shost->host_lock);
3086                 }
3087         lpfc_destroy_vport_work_array(phba, vports);
3088 }
3089 
3090 /**
3091  * lpfc_scsi_free - Free all the SCSI buffers and IOCBs from driver lists
3092  * @phba: pointer to lpfc hba data structure.
3093  *
3094  * This routine is to free all the SCSI buffers and IOCBs from the driver
3095  * list back to kernel. It is called from lpfc_pci_remove_one to free
3096  * the internal resources before the device is removed from the system.
3097  **/
3098 static void
3099 lpfc_scsi_free(struct lpfc_hba *phba)
3100 {
3101         struct lpfc_scsi_buf *sb, *sb_next;
3102         struct lpfc_iocbq *io, *io_next;
3103 
3104         spin_lock_irq(&phba->hbalock);
3105 
3106         /* Release all the lpfc_scsi_bufs maintained by this host. */
3107 
3108         spin_lock(&phba->scsi_buf_list_put_lock);
3109         list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list_put,
3110                                  list) {
3111                 list_del(&sb->list);
3112                 pci_pool_free(phba->lpfc_scsi_dma_buf_pool, sb->data,
3113                               sb->dma_handle);
3114                 kfree(sb);
3115                 phba->total_scsi_bufs--;
3116         }
3117         spin_unlock(&phba->scsi_buf_list_put_lock);
3118 
3119         spin_lock(&phba->scsi_buf_list_get_lock);
3120         list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list_get,
3121                                  list) {
3122                 list_del(&sb->list);
3123                 pci_pool_free(phba->lpfc_scsi_dma_buf_pool, sb->data,
3124                               sb->dma_handle);
3125                 kfree(sb);
3126                 phba->total_scsi_bufs--;
3127         }
3128         spin_unlock(&phba->scsi_buf_list_get_lock);
3129 
3130         /* Release all the lpfc_iocbq entries maintained by this host. */
3131         list_for_each_entry_safe(io, io_next, &phba->lpfc_iocb_list, list) {
3132                 list_del(&io->list);
3133                 kfree(io);
3134                 phba->total_iocbq_bufs--;
3135         }
3136 
3137         spin_unlock_irq(&phba->hbalock);
3138 }
3139 
3140 /**
3141  * lpfc_sli4_xri_sgl_update - update xri-sgl sizing and mapping
3142  * @phba: pointer to lpfc hba data structure.
3143  *
3144  * This routine first calculates the sizes of the current els and allocated
3145  * scsi sgl lists, and then goes through all sgls to updates the physical
3146  * XRIs assigned due to port function reset. During port initialization, the
3147  * current els and allocated scsi sgl lists are 0s.
3148  *
3149  * Return codes
3150  *   0 - successful (for now, it always returns 0)
3151  **/
3152 int
3153 lpfc_sli4_xri_sgl_update(struct lpfc_hba *phba)
3154 {
3155         struct lpfc_sglq *sglq_entry = NULL, *sglq_entry_next = NULL;
3156         struct lpfc_scsi_buf *psb = NULL, *psb_next = NULL;
3157         uint16_t i, lxri, xri_cnt, els_xri_cnt, scsi_xri_cnt;
3158         LIST_HEAD(els_sgl_list);
3159         LIST_HEAD(scsi_sgl_list);
3160         int rc;
3161         struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
3162 
3163         /*
3164          * update on pci function's els xri-sgl list
3165          */
3166         els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
3167         if (els_xri_cnt > phba->sli4_hba.els_xri_cnt) {
3168                 /* els xri-sgl expanded */
3169                 xri_cnt = els_xri_cnt - phba->sli4_hba.els_xri_cnt;
3170                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3171                                 "3157 ELS xri-sgl count increased from "
3172                                 "%d to %d\n", phba->sli4_hba.els_xri_cnt,
3173                                 els_xri_cnt);
3174                 /* allocate the additional els sgls */
3175                 for (i = 0; i < xri_cnt; i++) {
3176                         sglq_entry = kzalloc(sizeof(struct lpfc_sglq),
3177                                              GFP_KERNEL);
3178                         if (sglq_entry == NULL) {
3179                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3180                                                 "2562 Failure to allocate an "
3181                                                 "ELS sgl entry:%d\n", i);
3182                                 rc = -ENOMEM;
3183                                 goto out_free_mem;
3184                         }
3185                         sglq_entry->buff_type = GEN_BUFF_TYPE;
3186                         sglq_entry->virt = lpfc_mbuf_alloc(phba, 0,
3187                                                            &sglq_entry->phys);
3188                         if (sglq_entry->virt == NULL) {
3189                                 kfree(sglq_entry);
3190                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3191                                                 "2563 Failure to allocate an "
3192                                                 "ELS mbuf:%d\n", i);
3193                                 rc = -ENOMEM;
3194                                 goto out_free_mem;
3195                         }
3196                         sglq_entry->sgl = sglq_entry->virt;
3197                         memset(sglq_entry->sgl, 0, LPFC_BPL_SIZE);
3198                         sglq_entry->state = SGL_FREED;
3199                         list_add_tail(&sglq_entry->list, &els_sgl_list);
3200                 }
3201                 spin_lock_irq(&phba->hbalock);
3202                 spin_lock(&pring->ring_lock);
3203                 list_splice_init(&els_sgl_list, &phba->sli4_hba.lpfc_sgl_list);
3204                 spin_unlock(&pring->ring_lock);
3205                 spin_unlock_irq(&phba->hbalock);
3206         } else if (els_xri_cnt < phba->sli4_hba.els_xri_cnt) {
3207                 /* els xri-sgl shrinked */
3208                 xri_cnt = phba->sli4_hba.els_xri_cnt - els_xri_cnt;
3209                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3210                                 "3158 ELS xri-sgl count decreased from "
3211                                 "%d to %d\n", phba->sli4_hba.els_xri_cnt,
3212                                 els_xri_cnt);
3213                 spin_lock_irq(&phba->hbalock);
3214                 spin_lock(&pring->ring_lock);
3215                 list_splice_init(&phba->sli4_hba.lpfc_sgl_list, &els_sgl_list);
3216                 spin_unlock(&pring->ring_lock);
3217                 spin_unlock_irq(&phba->hbalock);
3218                 /* release extra els sgls from list */
3219                 for (i = 0; i < xri_cnt; i++) {
3220                         list_remove_head(&els_sgl_list,
3221                                          sglq_entry, struct lpfc_sglq, list);
3222                         if (sglq_entry) {
3223                                 lpfc_mbuf_free(phba, sglq_entry->virt,
3224                                                sglq_entry->phys);
3225                                 kfree(sglq_entry);
3226                         }
3227                 }
3228                 spin_lock_irq(&phba->hbalock);
3229                 spin_lock(&pring->ring_lock);
3230                 list_splice_init(&els_sgl_list, &phba->sli4_hba.lpfc_sgl_list);
3231                 spin_unlock(&pring->ring_lock);
3232                 spin_unlock_irq(&phba->hbalock);
3233         } else
3234                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3235                                 "3163 ELS xri-sgl count unchanged: %d\n",
3236                                 els_xri_cnt);
3237         phba->sli4_hba.els_xri_cnt = els_xri_cnt;
3238 
3239         /* update xris to els sgls on the list */
3240         sglq_entry = NULL;
3241         sglq_entry_next = NULL;
3242         list_for_each_entry_safe(sglq_entry, sglq_entry_next,
3243                                  &phba->sli4_hba.lpfc_sgl_list, list) {
3244                 lxri = lpfc_sli4_next_xritag(phba);
3245                 if (lxri == NO_XRI) {
3246                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3247                                         "2400 Failed to allocate xri for "
3248                                         "ELS sgl\n");
3249                         rc = -ENOMEM;
3250                         goto out_free_mem;
3251                 }
3252                 sglq_entry->sli4_lxritag = lxri;
3253                 sglq_entry->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
3254         }
3255 
3256         /*
3257          * update on pci function's allocated scsi xri-sgl list
3258          */
3259         phba->total_scsi_bufs = 0;
3260 
3261         /* maximum number of xris available for scsi buffers */
3262         phba->sli4_hba.scsi_xri_max = phba->sli4_hba.max_cfg_param.max_xri -
3263                                       els_xri_cnt;
3264 
3265         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3266                         "2401 Current allocated SCSI xri-sgl count:%d, "
3267                         "maximum  SCSI xri count:%d\n",
3268                         phba->sli4_hba.scsi_xri_cnt,
3269                         phba->sli4_hba.scsi_xri_max);
3270 
3271         spin_lock_irq(&phba->scsi_buf_list_get_lock);
3272         spin_lock(&phba->scsi_buf_list_put_lock);
3273         list_splice_init(&phba->lpfc_scsi_buf_list_get, &scsi_sgl_list);
3274         list_splice(&phba->lpfc_scsi_buf_list_put, &scsi_sgl_list);
3275         spin_unlock(&phba->scsi_buf_list_put_lock);
3276         spin_unlock_irq(&phba->scsi_buf_list_get_lock);
3277 
3278         if (phba->sli4_hba.scsi_xri_cnt > phba->sli4_hba.scsi_xri_max) {
3279                 /* max scsi xri shrinked below the allocated scsi buffers */
3280                 scsi_xri_cnt = phba->sli4_hba.scsi_xri_cnt -
3281                                         phba->sli4_hba.scsi_xri_max;
3282                 /* release the extra allocated scsi buffers */
3283                 for (i = 0; i < scsi_xri_cnt; i++) {
3284                         list_remove_head(&scsi_sgl_list, psb,
3285                                          struct lpfc_scsi_buf, list);
3286                         if (psb) {
3287                                 pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
3288                                               psb->data, psb->dma_handle);
3289                                 kfree(psb);
3290                         }
3291                 }
3292                 spin_lock_irq(&phba->scsi_buf_list_get_lock);
3293                 phba->sli4_hba.scsi_xri_cnt -= scsi_xri_cnt;
3294                 spin_unlock_irq(&phba->scsi_buf_list_get_lock);
3295         }
3296 
3297         /* update xris associated to remaining allocated scsi buffers */
3298         psb = NULL;
3299         psb_next = NULL;
3300         list_for_each_entry_safe(psb, psb_next, &scsi_sgl_list, list) {
3301                 lxri = lpfc_sli4_next_xritag(phba);
3302                 if (lxri == NO_XRI) {
3303                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3304                                         "2560 Failed to allocate xri for "
3305                                         "scsi buffer\n");
3306                         rc = -ENOMEM;
3307                         goto out_free_mem;
3308                 }
3309                 psb->cur_iocbq.sli4_lxritag = lxri;
3310                 psb->cur_iocbq.sli4_xritag = phba->sli4_hba.xri_ids[lxri];
3311         }
3312         spin_lock_irq(&phba->scsi_buf_list_get_lock);
3313         spin_lock(&phba->scsi_buf_list_put_lock);
3314         list_splice_init(&scsi_sgl_list, &phba->lpfc_scsi_buf_list_get);
3315         INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put);
3316         spin_unlock(&phba->scsi_buf_list_put_lock);
3317         spin_unlock_irq(&phba->scsi_buf_list_get_lock);
3318 
3319         return 0;
3320 
3321 out_free_mem:
3322         lpfc_free_els_sgl_list(phba);
3323         lpfc_scsi_free(phba);
3324         return rc;
3325 }
3326 
3327 /**
3328  * lpfc_create_port - Create an FC port
3329  * @phba: pointer to lpfc hba data structure.
3330  * @instance: a unique integer ID to this FC port.
3331  * @dev: pointer to the device data structure.
3332  *
3333  * This routine creates a FC port for the upper layer protocol. The FC port
3334  * can be created on top of either a physical port or a virtual port provided
3335  * by the HBA. This routine also allocates a SCSI host data structure (shost)
3336  * and associates the FC port created before adding the shost into the SCSI
3337  * layer.
3338  *
3339  * Return codes
3340  *   @vport - pointer to the virtual N_Port data structure.
3341  *   NULL - port create failed.
3342  **/
3343 struct lpfc_vport *
3344 lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev)
3345 {
3346         struct lpfc_vport *vport;
3347         struct Scsi_Host  *shost;
3348         int error = 0;
3349 
3350         if (dev != &phba->pcidev->dev) {
3351                 shost = scsi_host_alloc(&lpfc_vport_template,
3352                                         sizeof(struct lpfc_vport));
3353         } else {
3354                 if (phba->sli_rev == LPFC_SLI_REV4)
3355                         shost = scsi_host_alloc(&lpfc_template,
3356                                         sizeof(struct lpfc_vport));
3357                 else
3358                         shost = scsi_host_alloc(&lpfc_template_s3,
3359                                         sizeof(struct lpfc_vport));
3360         }
3361         if (!shost)
3362                 goto out;
3363 
3364         vport = (struct lpfc_vport *) shost->hostdata;
3365         vport->phba = phba;
3366         vport->load_flag |= FC_LOADING;
3367         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3368         vport->fc_rscn_flush = 0;
3369 
3370         lpfc_get_vport_cfgparam(vport);
3371         shost->unique_id = instance;
3372         shost->max_id = LPFC_MAX_TARGET;
3373         shost->max_lun = vport->cfg_max_luns;
3374         shost->this_id = -1;
3375         shost->max_cmd_len = 16;
3376         shost->nr_hw_queues = phba->cfg_fcp_io_channel;
3377         if (phba->sli_rev == LPFC_SLI_REV4) {
3378                 shost->dma_boundary =
3379                         phba->sli4_hba.pc_sli4_params.sge_supp_len-1;
3380                 shost->sg_tablesize = phba->cfg_sg_seg_cnt;
3381         }
3382 
3383         /*
3384          * Set initial can_queue value since 0 is no longer supported and
3385          * scsi_add_host will fail. This will be adjusted later based on the
3386          * max xri value determined in hba setup.
3387          */
3388         shost->can_queue = phba->cfg_hba_queue_depth - 10;
3389         if (dev != &phba->pcidev->dev) {
3390                 shost->transportt = lpfc_vport_transport_template;
3391                 vport->port_type = LPFC_NPIV_PORT;
3392         } else {
3393                 shost->transportt = lpfc_transport_template;
3394                 vport->port_type = LPFC_PHYSICAL_PORT;
3395         }
3396 
3397         /* Initialize all internally managed lists. */
3398         INIT_LIST_HEAD(&vport->fc_nodes);
3399         INIT_LIST_HEAD(&vport->rcv_buffer_list);
3400         spin_lock_init(&vport->work_port_lock);
3401 
3402         init_timer(&vport->fc_disctmo);
3403         vport->fc_disctmo.function = lpfc_disc_timeout;
3404         vport->fc_disctmo.data = (unsigned long)vport;
3405 
3406         init_timer(&vport->els_tmofunc);
3407         vport->els_tmofunc.function = lpfc_els_timeout;
3408         vport->els_tmofunc.data = (unsigned long)vport;
3409 
3410         init_timer(&vport->delayed_disc_tmo);
3411         vport->delayed_disc_tmo.function = lpfc_delayed_disc_tmo;
3412         vport->delayed_disc_tmo.data = (unsigned long)vport;
3413 
3414         error = scsi_add_host_with_dma(shost, dev, &phba->pcidev->dev);
3415         if (error)
3416                 goto out_put_shost;
3417 
3418         spin_lock_irq(&phba->hbalock);
3419         list_add_tail(&vport->listentry, &phba->port_list);
3420         spin_unlock_irq(&phba->hbalock);
3421         return vport;
3422 
3423 out_put_shost:
3424         scsi_host_put(shost);
3425 out:
3426         return NULL;
3427 }
3428 
3429 /**
3430  * destroy_port -  destroy an FC port
3431  * @vport: pointer to an lpfc virtual N_Port data structure.
3432  *
3433  * This routine destroys a FC port from the upper layer protocol. All the
3434  * resources associated with the port are released.
3435  **/
3436 void
3437 destroy_port(struct lpfc_vport *vport)
3438 {
3439         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3440         struct lpfc_hba  *phba = vport->phba;
3441 
3442         lpfc_debugfs_terminate(vport);
3443         fc_remove_host(shost);
3444         scsi_remove_host(shost);
3445 
3446         spin_lock_irq(&phba->hbalock);
3447         list_del_init(&vport->listentry);
3448         spin_unlock_irq(&phba->hbalock);
3449 
3450         lpfc_cleanup(vport);
3451         return;
3452 }
3453 
3454 /**
3455  * lpfc_get_instance - Get a unique integer ID
3456  *
3457  * This routine allocates a unique integer ID from lpfc_hba_index pool. It
3458  * uses the kernel idr facility to perform the task.
3459  *
3460  * Return codes:
3461  *   instance - a unique integer ID allocated as the new instance.
3462  *   -1 - lpfc get instance failed.
3463  **/
3464 int
3465 lpfc_get_instance(void)
3466 {
3467         int ret;
3468 
3469         ret = idr_alloc(&lpfc_hba_index, NULL, 0, 0, GFP_KERNEL);
3470         return ret < 0 ? -1 : ret;
3471 }
3472 
3473 /**
3474  * lpfc_scan_finished - method for SCSI layer to detect whether scan is done
3475  * @shost: pointer to SCSI host data structure.
3476  * @time: elapsed time of the scan in jiffies.
3477  *
3478  * This routine is called by the SCSI layer with a SCSI host to determine
3479  * whether the scan host is finished.
3480  *
3481  * Note: there is no scan_start function as adapter initialization will have
3482  * asynchronously kicked off the link initialization.
3483  *
3484  * Return codes
3485  *   0 - SCSI host scan is not over yet.
3486  *   1 - SCSI host scan is over.
3487  **/
3488 int lpfc_scan_finished(struct Scsi_Host *shost, unsigned long time)
3489 {
3490         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
3491         struct lpfc_hba   *phba = vport->phba;
3492         int stat = 0;
3493 
3494         spin_lock_irq(shost->host_lock);
3495 
3496         if (vport->load_flag & FC_UNLOADING) {
3497                 stat = 1;
3498                 goto finished;
3499         }
3500         if (time >= msecs_to_jiffies(30 * 1000)) {
3501                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3502                                 "0461 Scanning longer than 30 "
3503                                 "seconds.  Continuing initialization\n");
3504                 stat = 1;
3505                 goto finished;
3506         }
3507         if (time >= msecs_to_jiffies(15 * 1000) &&
3508             phba->link_state <= LPFC_LINK_DOWN) {
3509                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3510                                 "0465 Link down longer than 15 "
3511                                 "seconds.  Continuing initialization\n");
3512                 stat = 1;
3513                 goto finished;
3514         }
3515 
3516         if (vport->port_state != LPFC_VPORT_READY)
3517                 goto finished;
3518         if (vport->num_disc_nodes || vport->fc_prli_sent)
3519                 goto finished;
3520         if (vport->fc_map_cnt == 0 && time < msecs_to_jiffies(2 * 1000))
3521                 goto finished;
3522         if ((phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) != 0)
3523                 goto finished;
3524 
3525         stat = 1;
3526 
3527 finished:
3528         spin_unlock_irq(shost->host_lock);
3529         return stat;
3530 }
3531 
3532 /**
3533  * lpfc_host_attrib_init - Initialize SCSI host attributes on a FC port
3534  * @shost: pointer to SCSI host data structure.
3535  *
3536  * This routine initializes a given SCSI host attributes on a FC port. The
3537  * SCSI host can be either on top of a physical port or a virtual port.
3538  **/
3539 void lpfc_host_attrib_init(struct Scsi_Host *shost)
3540 {
3541         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
3542         struct lpfc_hba   *phba = vport->phba;
3543         /*
3544          * Set fixed host attributes.  Must done after lpfc_sli_hba_setup().
3545          */
3546 
3547         fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
3548         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
3549         fc_host_supported_classes(shost) = FC_COS_CLASS3;
3550 
3551         memset(fc_host_supported_fc4s(shost), 0,
3552                sizeof(fc_host_supported_fc4s(shost)));
3553         fc_host_supported_fc4s(shost)[2] = 1;
3554         fc_host_supported_fc4s(shost)[7] = 1;
3555 
3556         lpfc_vport_symbolic_node_name(vport, fc_host_symbolic_name(shost),
3557                                  sizeof fc_host_symbolic_name(shost));
3558 
3559         fc_host_supported_speeds(shost) = 0;
3560         if (phba->lmt & LMT_32Gb)
3561                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_32GBIT;
3562         if (phba->lmt & LMT_16Gb)
3563                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_16GBIT;
3564         if (phba->lmt & LMT_10Gb)
3565                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_10GBIT;
3566         if (phba->lmt & LMT_8Gb)
3567                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_8GBIT;
3568         if (phba->lmt & LMT_4Gb)
3569                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_4GBIT;
3570         if (phba->lmt & LMT_2Gb)
3571                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_2GBIT;
3572         if (phba->lmt & LMT_1Gb)
3573                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_1GBIT;
3574 
3575         fc_host_maxframe_size(shost) =
3576                 (((uint32_t) vport->fc_sparam.cmn.bbRcvSizeMsb & 0x0F) << 8) |
3577                 (uint32_t) vport->fc_sparam.cmn.bbRcvSizeLsb;
3578 
3579         fc_host_dev_loss_tmo(shost) = vport->cfg_devloss_tmo;
3580 
3581         /* This value is also unchanging */
3582         memset(fc_host_active_fc4s(shost), 0,
3583                sizeof(fc_host_active_fc4s(shost)));
3584         fc_host_active_fc4s(shost)[2] = 1;
3585         fc_host_active_fc4s(shost)[7] = 1;
3586 
3587         fc_host_max_npiv_vports(shost) = phba->max_vpi;
3588         spin_lock_irq(shost->host_lock);
3589         vport->load_flag &= ~FC_LOADING;
3590         spin_unlock_irq(shost->host_lock);
3591 }
3592 
3593 /**
3594  * lpfc_stop_port_s3 - Stop SLI3 device port
3595  * @phba: pointer to lpfc hba data structure.
3596  *
3597  * This routine is invoked to stop an SLI3 device port, it stops the device
3598  * from generating interrupts and stops the device driver's timers for the
3599  * device.
3600  **/
3601 static void
3602 lpfc_stop_port_s3(struct lpfc_hba *phba)
3603 {
3604         /* Clear all interrupt enable conditions */
3605         writel(0, phba->HCregaddr);
3606         readl(phba->HCregaddr); /* flush */
3607         /* Clear all pending interrupts */
3608         writel(0xffffffff, phba->HAregaddr);
3609         readl(phba->HAregaddr); /* flush */
3610 
3611         /* Reset some HBA SLI setup states */
3612         lpfc_stop_hba_timers(phba);
3613         phba->pport->work_port_events = 0;
3614 }
3615 
3616 /**
3617  * lpfc_stop_port_s4 - Stop SLI4 device port
3618  * @phba: pointer to lpfc hba data structure.
3619  *
3620  * This routine is invoked to stop an SLI4 device port, it stops the device
3621  * from generating interrupts and stops the device driver's timers for the
3622  * device.
3623  **/
3624 static void
3625 lpfc_stop_port_s4(struct lpfc_hba *phba)
3626 {
3627         /* Reset some HBA SLI4 setup states */
3628         lpfc_stop_hba_timers(phba);
3629         phba->pport->work_port_events = 0;
3630         phba->sli4_hba.intr_enable = 0;
3631 }
3632 
3633 /**
3634  * lpfc_stop_port - Wrapper function for stopping hba port
3635  * @phba: Pointer to HBA context object.
3636  *
3637  * This routine wraps the actual SLI3 or SLI4 hba stop port routine from
3638  * the API jump table function pointer from the lpfc_hba struct.
3639  **/
3640 void
3641 lpfc_stop_port(struct lpfc_hba *phba)
3642 {
3643         phba->lpfc_stop_port(phba);
3644 }
3645 
3646 /**
3647  * lpfc_fcf_redisc_wait_start_timer - Start fcf rediscover wait timer
3648  * @phba: Pointer to hba for which this call is being executed.
3649  *
3650  * This routine starts the timer waiting for the FCF rediscovery to complete.
3651  **/
3652 void
3653 lpfc_fcf_redisc_wait_start_timer(struct lpfc_hba *phba)
3654 {
3655         unsigned long fcf_redisc_wait_tmo =
3656                 (jiffies + msecs_to_jiffies(LPFC_FCF_REDISCOVER_WAIT_TMO));
3657         /* Start fcf rediscovery wait period timer */
3658         mod_timer(&phba->fcf.redisc_wait, fcf_redisc_wait_tmo);
3659         spin_lock_irq(&phba->hbalock);
3660         /* Allow action to new fcf asynchronous event */
3661         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
3662         /* Mark the FCF rediscovery pending state */
3663         phba->fcf.fcf_flag |= FCF_REDISC_PEND;
3664         spin_unlock_irq(&phba->hbalock);
3665 }
3666 
3667 /**
3668  * lpfc_sli4_fcf_redisc_wait_tmo - FCF table rediscover wait timeout
3669  * @ptr: Map to lpfc_hba data structure pointer.
3670  *
3671  * This routine is invoked when waiting for FCF table rediscover has been
3672  * timed out. If new FCF record(s) has (have) been discovered during the
3673  * wait period, a new FCF event shall be added to the FCOE async event
3674  * list, and then worker thread shall be waked up for processing from the
3675  * worker thread context.
3676  **/
3677 static void
3678 lpfc_sli4_fcf_redisc_wait_tmo(unsigned long ptr)
3679 {
3680         struct lpfc_hba *phba = (struct lpfc_hba *)ptr;
3681 
3682         /* Don't send FCF rediscovery event if timer cancelled */
3683         spin_lock_irq(&phba->hbalock);
3684         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
3685                 spin_unlock_irq(&phba->hbalock);
3686                 return;
3687         }
3688         /* Clear FCF rediscovery timer pending flag */
3689         phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
3690         /* FCF rediscovery event to worker thread */
3691         phba->fcf.fcf_flag |= FCF_REDISC_EVT;
3692         spin_unlock_irq(&phba->hbalock);
3693         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3694                         "2776 FCF rediscover quiescent timer expired\n");
3695         /* wake up worker thread */
3696         lpfc_worker_wake_up(phba);
3697 }
3698 
3699 /**
3700  * lpfc_sli4_parse_latt_fault - Parse sli4 link-attention link fault code
3701  * @phba: pointer to lpfc hba data structure.
3702  * @acqe_link: pointer to the async link completion queue entry.
3703  *
3704  * This routine is to parse the SLI4 link-attention link fault code and
3705  * translate it into the base driver's read link attention mailbox command
3706  * status.
3707  *
3708  * Return: Link-attention status in terms of base driver's coding.
3709  **/
3710 static uint16_t
3711 lpfc_sli4_parse_latt_fault(struct lpfc_hba *phba,
3712                            struct lpfc_acqe_link *acqe_link)
3713 {
3714         uint16_t latt_fault;
3715 
3716         switch (bf_get(lpfc_acqe_link_fault, acqe_link)) {
3717         case LPFC_ASYNC_LINK_FAULT_NONE:
3718         case LPFC_ASYNC_LINK_FAULT_LOCAL:
3719         case LPFC_ASYNC_LINK_FAULT_REMOTE:
3720                 latt_fault = 0;
3721                 break;
3722         default:
3723                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3724                                 "0398 Invalid link fault code: x%x\n",
3725                                 bf_get(lpfc_acqe_link_fault, acqe_link));
3726                 latt_fault = MBXERR_ERROR;
3727                 break;
3728         }
3729         return latt_fault;
3730 }
3731 
3732 /**
3733  * lpfc_sli4_parse_latt_type - Parse sli4 link attention type
3734  * @phba: pointer to lpfc hba data structure.
3735  * @acqe_link: pointer to the async link completion queue entry.
3736  *
3737  * This routine is to parse the SLI4 link attention type and translate it
3738  * into the base driver's link attention type coding.
3739  *
3740  * Return: Link attention type in terms of base driver's coding.
3741  **/
3742 static uint8_t
3743 lpfc_sli4_parse_latt_type(struct lpfc_hba *phba,
3744                           struct lpfc_acqe_link *acqe_link)
3745 {
3746         uint8_t att_type;
3747 
3748         switch (bf_get(lpfc_acqe_link_status, acqe_link)) {
3749         case LPFC_ASYNC_LINK_STATUS_DOWN:
3750         case LPFC_ASYNC_LINK_STATUS_LOGICAL_DOWN:
3751                 att_type = LPFC_ATT_LINK_DOWN;
3752                 break;
3753         case LPFC_ASYNC_LINK_STATUS_UP:
3754                 /* Ignore physical link up events - wait for logical link up */
3755                 att_type = LPFC_ATT_RESERVED;
3756                 break;
3757         case LPFC_ASYNC_LINK_STATUS_LOGICAL_UP:
3758                 att_type = LPFC_ATT_LINK_UP;
3759                 break;
3760         default:
3761                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3762                                 "0399 Invalid link attention type: x%x\n",
3763                                 bf_get(lpfc_acqe_link_status, acqe_link));
3764                 att_type = LPFC_ATT_RESERVED;
3765                 break;
3766         }
3767         return att_type;
3768 }
3769 
3770 /**
3771  * lpfc_sli_port_speed_get - Get sli3 link speed code to link speed
3772  * @phba: pointer to lpfc hba data structure.
3773  *
3774  * This routine is to get an SLI3 FC port's link speed in Mbps.
3775  *
3776  * Return: link speed in terms of Mbps.
3777  **/
3778 uint32_t
3779 lpfc_sli_port_speed_get(struct lpfc_hba *phba)
3780 {
3781         uint32_t link_speed;
3782 
3783         if (!lpfc_is_link_up(phba))
3784                 return 0;
3785 
3786         if (phba->sli_rev <= LPFC_SLI_REV3) {
3787                 switch (phba->fc_linkspeed) {
3788                 case LPFC_LINK_SPEED_1GHZ:
3789                         link_speed = 1000;
3790                         break;
3791                 case LPFC_LINK_SPEED_2GHZ:
3792                         link_speed = 2000;
3793                         break;
3794                 case LPFC_LINK_SPEED_4GHZ:
3795                         link_speed = 4000;
3796                         break;
3797                 case LPFC_LINK_SPEED_8GHZ:
3798                         link_speed = 8000;
3799                         break;
3800                 case LPFC_LINK_SPEED_10GHZ:
3801                         link_speed = 10000;
3802                         break;
3803                 case LPFC_LINK_SPEED_16GHZ:
3804                         link_speed = 16000;
3805                         break;
3806                 default:
3807                         link_speed = 0;
3808                 }
3809         } else {
3810                 if (phba->sli4_hba.link_state.logical_speed)
3811                         link_speed =
3812                               phba->sli4_hba.link_state.logical_speed;
3813                 else
3814                         link_speed = phba->sli4_hba.link_state.speed;
3815         }
3816         return link_speed;
3817 }
3818 
3819 /**
3820  * lpfc_sli4_port_speed_parse - Parse async evt link speed code to link speed
3821  * @phba: pointer to lpfc hba data structure.
3822  * @evt_code: asynchronous event code.
3823  * @speed_code: asynchronous event link speed code.
3824  *
3825  * This routine is to parse the giving SLI4 async event link speed code into
3826  * value of Mbps for the link speed.
3827  *
3828  * Return: link speed in terms of Mbps.
3829  **/
3830 static uint32_t
3831 lpfc_sli4_port_speed_parse(struct lpfc_hba *phba, uint32_t evt_code,
3832                            uint8_t speed_code)
3833 {
3834         uint32_t port_speed;
3835 
3836         switch (evt_code) {
3837         case LPFC_TRAILER_CODE_LINK:
3838                 switch (speed_code) {
3839                 case LPFC_ASYNC_LINK_SPEED_ZERO:
3840                         port_speed = 0;
3841                         break;
3842                 case LPFC_ASYNC_LINK_SPEED_10MBPS:
3843                         port_speed = 10;
3844                         break;
3845                 case LPFC_ASYNC_LINK_SPEED_100MBPS:
3846                         port_speed = 100;
3847                         break;
3848                 case LPFC_ASYNC_LINK_SPEED_1GBPS:
3849                         port_speed = 1000;
3850                         break;
3851                 case LPFC_ASYNC_LINK_SPEED_10GBPS:
3852                         port_speed = 10000;
3853                         break;
3854                 case LPFC_ASYNC_LINK_SPEED_20GBPS:
3855                         port_speed = 20000;
3856                         break;
3857                 case LPFC_ASYNC_LINK_SPEED_25GBPS:
3858                         port_speed = 25000;
3859                         break;
3860                 case LPFC_ASYNC_LINK_SPEED_40GBPS:
3861                         port_speed = 40000;
3862                         break;
3863                 default:
3864                         port_speed = 0;
3865                 }
3866                 break;
3867         case LPFC_TRAILER_CODE_FC:
3868                 switch (speed_code) {
3869                 case LPFC_FC_LA_SPEED_UNKNOWN:
3870                         port_speed = 0;
3871                         break;
3872                 case LPFC_FC_LA_SPEED_1G:
3873                         port_speed = 1000;
3874                         break;
3875                 case LPFC_FC_LA_SPEED_2G:
3876                         port_speed = 2000;
3877                         break;
3878                 case LPFC_FC_LA_SPEED_4G:
3879                         port_speed = 4000;
3880                         break;
3881                 case LPFC_FC_LA_SPEED_8G:
3882                         port_speed = 8000;
3883                         break;
3884                 case LPFC_FC_LA_SPEED_10G:
3885                         port_speed = 10000;
3886                         break;
3887                 case LPFC_FC_LA_SPEED_16G:
3888                         port_speed = 16000;
3889                         break;
3890                 case LPFC_FC_LA_SPEED_32G:
3891                         port_speed = 32000;
3892                         break;
3893                 default:
3894                         port_speed = 0;
3895                 }
3896                 break;
3897         default:
3898                 port_speed = 0;
3899         }
3900         return port_speed;
3901 }
3902 
3903 /**
3904  * lpfc_sli4_async_link_evt - Process the asynchronous FCoE link event
3905  * @phba: pointer to lpfc hba data structure.
3906  * @acqe_link: pointer to the async link completion queue entry.
3907  *
3908  * This routine is to handle the SLI4 asynchronous FCoE link event.
3909  **/
3910 static void
3911 lpfc_sli4_async_link_evt(struct lpfc_hba *phba,
3912                          struct lpfc_acqe_link *acqe_link)
3913 {
3914         struct lpfc_dmabuf *mp;
3915         LPFC_MBOXQ_t *pmb;
3916         MAILBOX_t *mb;
3917         struct lpfc_mbx_read_top *la;
3918         uint8_t att_type;
3919         int rc;
3920 
3921         att_type = lpfc_sli4_parse_latt_type(phba, acqe_link);
3922         if (att_type != LPFC_ATT_LINK_DOWN && att_type != LPFC_ATT_LINK_UP)
3923                 return;
3924         phba->fcoe_eventtag = acqe_link->event_tag;
3925         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3926         if (!pmb) {
3927                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3928                                 "0395 The mboxq allocation failed\n");
3929                 return;
3930         }
3931         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
3932         if (!mp) {
3933                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3934                                 "0396 The lpfc_dmabuf allocation failed\n");
3935                 goto out_free_pmb;
3936         }
3937         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
3938         if (!mp->virt) {
3939                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3940                                 "0397 The mbuf allocation failed\n");
3941                 goto out_free_dmabuf;
3942         }
3943 
3944         /* Cleanup any outstanding ELS commands */
3945         lpfc_els_flush_all_cmd(phba);
3946 
3947         /* Block ELS IOCBs until we have done process link event */
3948         phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
3949 
3950         /* Update link event statistics */
3951         phba->sli.slistat.link_event++;
3952 
3953         /* Create lpfc_handle_latt mailbox command from link ACQE */
3954         lpfc_read_topology(phba, pmb, mp);
3955         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
3956         pmb->vport = phba->pport;
3957 
3958         /* Keep the link status for extra SLI4 state machine reference */
3959         phba->sli4_hba.link_state.speed =
3960                         lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_LINK,
3961                                 bf_get(lpfc_acqe_link_speed, acqe_link));
3962         phba->sli4_hba.link_state.duplex =
3963                                 bf_get(lpfc_acqe_link_duplex, acqe_link);
3964         phba->sli4_hba.link_state.status =
3965                                 bf_get(lpfc_acqe_link_status, acqe_link);
3966         phba->sli4_hba.link_state.type =
3967                                 bf_get(lpfc_acqe_link_type, acqe_link);
3968         phba->sli4_hba.link_state.number =
3969                                 bf_get(lpfc_acqe_link_number, acqe_link);
3970         phba->sli4_hba.link_state.fault =
3971                                 bf_get(lpfc_acqe_link_fault, acqe_link);
3972         phba->sli4_hba.link_state.logical_speed =
3973                         bf_get(lpfc_acqe_logical_link_speed, acqe_link) * 10;
3974 
3975         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3976                         "2900 Async FC/FCoE Link event - Speed:%dGBit "
3977                         "duplex:x%x LA Type:x%x Port Type:%d Port Number:%d "
3978                         "Logical speed:%dMbps Fault:%d\n",
3979                         phba->sli4_hba.link_state.speed,
3980                         phba->sli4_hba.link_state.topology,
3981                         phba->sli4_hba.link_state.status,
3982                         phba->sli4_hba.link_state.type,
3983                         phba->sli4_hba.link_state.number,
3984                         phba->sli4_hba.link_state.logical_speed,
3985                         phba->sli4_hba.link_state.fault);
3986         /*
3987          * For FC Mode: issue the READ_TOPOLOGY mailbox command to fetch
3988          * topology info. Note: Optional for non FC-AL ports.
3989          */
3990         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3991                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
3992                 if (rc == MBX_NOT_FINISHED)
3993                         goto out_free_dmabuf;
3994                 return;
3995         }
3996         /*
3997          * For FCoE Mode: fill in all the topology information we need and call
3998          * the READ_TOPOLOGY completion routine to continue without actually
3999          * sending the READ_TOPOLOGY mailbox command to the port.
4000          */
4001         /* Parse and translate status field */
4002         mb = &pmb->u.mb;
4003         mb->mbxStatus = lpfc_sli4_parse_latt_fault(phba, acqe_link);
4004 
4005         /* Parse and translate link attention fields */
4006         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
4007         la->eventTag = acqe_link->event_tag;
4008         bf_set(lpfc_mbx_read_top_att_type, la, att_type);
4009         bf_set(lpfc_mbx_read_top_link_spd, la,
4010                (bf_get(lpfc_acqe_link_speed, acqe_link)));
4011 
4012         /* Fake the the following irrelvant fields */
4013         bf_set(lpfc_mbx_read_top_topology, la, LPFC_TOPOLOGY_PT_PT);
4014         bf_set(lpfc_mbx_read_top_alpa_granted, la, 0);
4015         bf_set(lpfc_mbx_read_top_il, la, 0);
4016         bf_set(lpfc_mbx_read_top_pb, la, 0);
4017         bf_set(lpfc_mbx_read_top_fa, la, 0);
4018         bf_set(lpfc_mbx_read_top_mm, la, 0);
4019 
4020         /* Invoke the lpfc_handle_latt mailbox command callback function */
4021         lpfc_mbx_cmpl_read_topology(phba, pmb);
4022 
4023         return;
4024 
4025 out_free_dmabuf:
4026         kfree(mp);
4027 out_free_pmb:
4028         mempool_free(pmb, phba->mbox_mem_pool);
4029 }
4030 
4031 /**
4032  * lpfc_sli4_async_fc_evt - Process the asynchronous FC link event
4033  * @phba: pointer to lpfc hba data structure.
4034  * @acqe_fc: pointer to the async fc completion queue entry.
4035  *
4036  * This routine is to handle the SLI4 asynchronous FC event. It will simply log
4037  * that the event was received and then issue a read_topology mailbox command so
4038  * that the rest of the driver will treat it the same as SLI3.
4039  **/
4040 static void
4041 lpfc_sli4_async_fc_evt(struct lpfc_hba *phba, struct lpfc_acqe_fc_la *acqe_fc)
4042 {
4043         struct lpfc_dmabuf *mp;
4044         LPFC_MBOXQ_t *pmb;
4045         MAILBOX_t *mb;
4046         struct lpfc_mbx_read_top *la;
4047         int rc;
4048 
4049         if (bf_get(lpfc_trailer_type, acqe_fc) !=
4050             LPFC_FC_LA_EVENT_TYPE_FC_LINK) {
4051                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4052                                 "2895 Non FC link Event detected.(%d)\n",
4053                                 bf_get(lpfc_trailer_type, acqe_fc));
4054                 return;
4055         }
4056         /* Keep the link status for extra SLI4 state machine reference */
4057         phba->sli4_hba.link_state.speed =
4058                         lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_FC,
4059                                 bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
4060         phba->sli4_hba.link_state.duplex = LPFC_ASYNC_LINK_DUPLEX_FULL;
4061         phba->sli4_hba.link_state.topology =
4062                                 bf_get(lpfc_acqe_fc_la_topology, acqe_fc);
4063         phba->sli4_hba.link_state.status =
4064                                 bf_get(lpfc_acqe_fc_la_att_type, acqe_fc);
4065         phba->sli4_hba.link_state.type =
4066                                 bf_get(lpfc_acqe_fc_la_port_type, acqe_fc);
4067         phba->sli4_hba.link_state.number =
4068                                 bf_get(lpfc_acqe_fc_la_port_number, acqe_fc);
4069         phba->sli4_hba.link_state.fault =
4070                                 bf_get(lpfc_acqe_link_fault, acqe_fc);
4071         phba->sli4_hba.link_state.logical_speed =
4072                                 bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc) * 10;
4073         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4074                         "2896 Async FC event - Speed:%dGBaud Topology:x%x "
4075                         "LA Type:x%x Port Type:%d Port Number:%d Logical speed:"
4076                         "%dMbps Fault:%d\n",
4077                         phba->sli4_hba.link_state.speed,
4078                         phba->sli4_hba.link_state.topology,
4079                         phba->sli4_hba.link_state.status,
4080                         phba->sli4_hba.link_state.type,
4081                         phba->sli4_hba.link_state.number,
4082                         phba->sli4_hba.link_state.logical_speed,
4083                         phba->sli4_hba.link_state.fault);
4084         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4085         if (!pmb) {
4086                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4087                                 "2897 The mboxq allocation failed\n");
4088                 return;
4089         }
4090         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
4091         if (!mp) {
4092                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4093                                 "2898 The lpfc_dmabuf allocation failed\n");
4094                 goto out_free_pmb;
4095         }
4096         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
4097         if (!mp->virt) {
4098                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4099                                 "2899 The mbuf allocation failed\n");
4100                 goto out_free_dmabuf;
4101         }
4102 
4103         /* Cleanup any outstanding ELS commands */
4104         lpfc_els_flush_all_cmd(phba);
4105 
4106         /* Block ELS IOCBs until we have done process link event */
4107         phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
4108 
4109         /* Update link event statistics */
4110         phba->sli.slistat.link_event++;
4111 
4112         /* Create lpfc_handle_latt mailbox command from link ACQE */
4113         lpfc_read_topology(phba, pmb, mp);
4114         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
4115         pmb->vport = phba->pport;
4116 
4117         if (phba->sli4_hba.link_state.status != LPFC_FC_LA_TYPE_LINK_UP) {
4118                 /* Parse and translate status field */
4119                 mb = &pmb->u.mb;
4120                 mb->mbxStatus = lpfc_sli4_parse_latt_fault(phba,
4121                                                            (void *)acqe_fc);
4122 
4123                 /* Parse and translate link attention fields */
4124                 la = (struct lpfc_mbx_read_top *)&pmb->u.mb.un.varReadTop;
4125                 la->eventTag = acqe_fc->event_tag;
4126                 bf_set(lpfc_mbx_read_top_att_type, la,
4127                        LPFC_FC_LA_TYPE_LINK_DOWN);
4128 
4129                 /* Invoke the mailbox command callback function */
4130                 lpfc_mbx_cmpl_read_topology(phba, pmb);
4131 
4132                 return;
4133         }
4134 
4135         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
4136         if (rc == MBX_NOT_FINISHED)
4137                 goto out_free_dmabuf;
4138         return;
4139 
4140 out_free_dmabuf:
4141         kfree(mp);
4142 out_free_pmb:
4143         mempool_free(pmb, phba->mbox_mem_pool);
4144 }
4145 
4146 /**
4147  * lpfc_sli4_async_sli_evt - Process the asynchronous SLI link event
4148  * @phba: pointer to lpfc hba data structure.
4149  * @acqe_fc: pointer to the async SLI completion queue entry.
4150  *
4151  * This routine is to handle the SLI4 asynchronous SLI events.
4152  **/
4153 static void
4154 lpfc_sli4_async_sli_evt(struct lpfc_hba *phba, struct lpfc_acqe_sli *acqe_sli)
4155 {
4156         char port_name;
4157         char message[128];
4158         uint8_t status;
4159         uint8_t evt_type;
4160         uint8_t operational = 0;
4161         struct temp_event temp_event_data;
4162         struct lpfc_acqe_misconfigured_event *misconfigured;
4163         struct Scsi_Host  *shost;
4164 
4165         evt_type = bf_get(lpfc_trailer_type, acqe_sli);
4166 
4167         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4168                         "2901 Async SLI event - Event Data1:x%08x Event Data2:"
4169                         "x%08x SLI Event Type:%d\n",
4170                         acqe_sli->event_data1, acqe_sli->event_data2,
4171                         evt_type);
4172 
4173         port_name = phba->Port[0];
4174         if (port_name == 0x00)
4175                 port_name = '?'; /* get port name is empty */
4176 
4177         switch (evt_type) {
4178         case LPFC_SLI_EVENT_TYPE_OVER_TEMP:
4179                 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
4180                 temp_event_data.event_code = LPFC_THRESHOLD_TEMP;
4181                 temp_event_data.data = (uint32_t)acqe_sli->event_data1;
4182 
4183                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
4184                                 "3190 Over Temperature:%d Celsius- Port Name %c\n",
4185                                 acqe_sli->event_data1, port_name);
4186 
4187                 phba->sfp_warning |= LPFC_TRANSGRESSION_HIGH_TEMPERATURE;
4188                 shost = lpfc_shost_from_vport(phba->pport);
4189                 fc_host_post_vendor_event(shost, fc_get_event_number(),
4190                                           sizeof(temp_event_data),
4191                                           (char *)&temp_event_data,
4192                                           SCSI_NL_VID_TYPE_PCI
4193                                           | PCI_VENDOR_ID_EMULEX);
4194                 break;
4195         case LPFC_SLI_EVENT_TYPE_NORM_TEMP:
4196                 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
4197                 temp_event_data.event_code = LPFC_NORMAL_TEMP;
4198                 temp_event_data.data = (uint32_t)acqe_sli->event_data1;
4199 
4200                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4201                                 "3191 Normal Temperature:%d Celsius - Port Name %c\n",
4202                                 acqe_sli->event_data1, port_name);
4203 
4204                 shost = lpfc_shost_from_vport(phba->pport);
4205                 fc_host_post_vendor_event(shost, fc_get_event_number(),
4206                                           sizeof(temp_event_data),
4207                                           (char *)&temp_event_data,
4208                                           SCSI_NL_VID_TYPE_PCI
4209                                           | PCI_VENDOR_ID_EMULEX);
4210                 break;
4211         case LPFC_SLI_EVENT_TYPE_MISCONFIGURED:
4212                 misconfigured = (struct lpfc_acqe_misconfigured_event *)
4213                                         &acqe_sli->event_data1;
4214 
4215                 /* fetch the status for this port */
4216                 switch (phba->sli4_hba.lnk_info.lnk_no) {
4217                 case LPFC_LINK_NUMBER_0:
4218                         status = bf_get(lpfc_sli_misconfigured_port0_state,
4219                                         &misconfigured->theEvent);
4220                         operational = bf_get(lpfc_sli_misconfigured_port0_op,
4221                                         &misconfigured->theEvent);
4222                         break;
4223                 case LPFC_LINK_NUMBER_1:
4224                         status = bf_get(lpfc_sli_misconfigured_port1_state,
4225                                         &misconfigured->theEvent);
4226                         operational = bf_get(lpfc_sli_misconfigured_port1_op,
4227                                         &misconfigured->theEvent);
4228                         break;
4229                 case LPFC_LINK_NUMBER_2:
4230                         status = bf_get(lpfc_sli_misconfigured_port2_state,
4231                                         &misconfigured->theEvent);
4232                         operational = bf_get(lpfc_sli_misconfigured_port2_op,
4233                                         &misconfigured->theEvent);
4234                         break;
4235                 case LPFC_LINK_NUMBER_3:
4236                         status = bf_get(lpfc_sli_misconfigured_port3_state,
4237                                         &misconfigured->theEvent);
4238                         operational = bf_get(lpfc_sli_misconfigured_port3_op,
4239                                         &misconfigured->theEvent);
4240                         break;
4241                 default:
4242                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4243                                         "3296 "
4244                                         "LPFC_SLI_EVENT_TYPE_MISCONFIGURED "
4245                                         "event: Invalid link %d",
4246                                         phba->sli4_hba.lnk_info.lnk_no);
4247                         return;
4248                 }
4249 
4250                 /* Skip if optic state unchanged */
4251                 if (phba->sli4_hba.lnk_info.optic_state == status)
4252                         return;
4253 
4254                 switch (status) {
4255                 case LPFC_SLI_EVENT_STATUS_VALID:
4256                         sprintf(message, "Physical Link is functional");
4257                         break;
4258                 case LPFC_SLI_EVENT_STATUS_NOT_PRESENT:
4259                         sprintf(message, "Optics faulted/incorrectly "
4260                                 "installed/not installed - Reseat optics, "
4261                                 "if issue not resolved, replace.");
4262                         break;
4263                 case LPFC_SLI_EVENT_STATUS_WRONG_TYPE:
4264                         sprintf(message,
4265                                 "Optics of two types installed - Remove one "
4266                                 "optic or install matching pair of optics.");
4267                         break;
4268                 case LPFC_SLI_EVENT_STATUS_UNSUPPORTED:
4269                         sprintf(message, "Incompatible optics - Replace with "
4270                                 "compatible optics for card to function.");
4271                         break;
4272                 case LPFC_SLI_EVENT_STATUS_UNQUALIFIED:
4273                         sprintf(message, "Unqualified optics - Replace with "
4274                                 "Avago optics for Warranty and Technical "
4275                                 "Support - Link is%s operational",
4276                                 (operational) ? "" : " not");
4277                         break;
4278                 case LPFC_SLI_EVENT_STATUS_UNCERTIFIED:
4279                         sprintf(message, "Uncertified optics - Replace with "
4280                                 "Avago-certified optics to enable link "
4281                                 "operation - Link is%s operational",
4282                                 (operational) ? "" : " not");
4283                         break;
4284                 default:
4285                         /* firmware is reporting a status we don't know about */
4286                         sprintf(message, "Unknown event status x%02x", status);
4287                         break;
4288                 }
4289                 phba->sli4_hba.lnk_info.optic_state = status;
4290                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4291                                 "3176 Port Name %c %s\n", port_name, message);
4292                 break;
4293         case LPFC_SLI_EVENT_TYPE_REMOTE_DPORT:
4294                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4295                                 "3192 Remote DPort Test Initiated - "
4296                                 "Event Data1:x%08x Event Data2: x%08x\n",
4297                                 acqe_sli->event_data1, acqe_sli->event_data2);
4298                 break;
4299         default:
4300                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4301                                 "3193 Async SLI event - Event Data1:x%08x Event Data2:"
4302                                 "x%08x SLI Event Type:%d\n",
4303                                 acqe_sli->event_data1, acqe_sli->event_data2,
4304                                 evt_type);
4305                 break;
4306         }
4307 }
4308 
4309 /**
4310  * lpfc_sli4_perform_vport_cvl - Perform clear virtual link on a vport
4311  * @vport: pointer to vport data structure.
4312  *
4313  * This routine is to perform Clear Virtual Link (CVL) on a vport in
4314  * response to a CVL event.
4315  *
4316  * Return the pointer to the ndlp with the vport if successful, otherwise
4317  * return NULL.
4318  **/
4319 static struct lpfc_nodelist *
4320 lpfc_sli4_perform_vport_cvl(struct lpfc_vport *vport)
4321 {
4322         struct lpfc_nodelist *ndlp;
4323         struct Scsi_Host *shost;
4324         struct lpfc_hba *phba;
4325 
4326         if (!vport)
4327                 return NULL;
4328         phba = vport->phba;
4329         if (!phba)
4330                 return NULL;
4331         ndlp = lpfc_findnode_did(vport, Fabric_DID);
4332         if (!ndlp) {
4333                 /* Cannot find existing Fabric ndlp, so allocate a new one */
4334                 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
4335                 if (!ndlp)
4336                         return 0;
4337                 lpfc_nlp_init(vport, ndlp, Fabric_DID);
4338                 /* Set the node type */
4339                 ndlp->nlp_type |= NLP_FABRIC;
4340                 /* Put ndlp onto node list */
4341                 lpfc_enqueue_node(vport, ndlp);
4342         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
4343                 /* re-setup ndlp without removing from node list */
4344                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
4345                 if (!ndlp)
4346                         return 0;
4347         }
4348         if ((phba->pport->port_state < LPFC_FLOGI) &&
4349                 (phba->pport->port_state != LPFC_VPORT_FAILED))
4350                 return NULL;
4351         /* If virtual link is not yet instantiated ignore CVL */
4352         if ((vport != phba->pport) && (vport->port_state < LPFC_FDISC)
4353                 && (vport->port_state != LPFC_VPORT_FAILED))
4354                 return NULL;
4355         shost = lpfc_shost_from_vport(vport);
4356         if (!shost)
4357                 return NULL;
4358         lpfc_linkdown_port(vport);
4359         lpfc_cleanup_pending_mbox(vport);
4360         spin_lock_irq(shost->host_lock);
4361         vport->fc_flag |= FC_VPORT_CVL_RCVD;
4362         spin_unlock_irq(shost->host_lock);
4363 
4364         return ndlp;
4365 }
4366 
4367 /**
4368  * lpfc_sli4_perform_all_vport_cvl - Perform clear virtual link on all vports
4369  * @vport: pointer to lpfc hba data structure.
4370  *
4371  * This routine is to perform Clear Virtual Link (CVL) on all vports in
4372  * response to a FCF dead event.
4373  **/
4374 static void
4375 lpfc_sli4_perform_all_vport_cvl(struct lpfc_hba *phba)
4376 {
4377         struct lpfc_vport **vports;
4378         int i;
4379 
4380         vports = lpfc_create_vport_work_array(phba);
4381         if (vports)
4382                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
4383                         lpfc_sli4_perform_vport_cvl(vports[i]);
4384         lpfc_destroy_vport_work_array(phba, vports);
4385 }
4386 
4387 /**
4388  * lpfc_sli4_async_fip_evt - Process the asynchronous FCoE FIP event
4389  * @phba: pointer to lpfc hba data structure.
4390  * @acqe_link: pointer to the async fcoe completion queue entry.
4391  *
4392  * This routine is to handle the SLI4 asynchronous fcoe event.
4393  **/
4394 static void
4395 lpfc_sli4_async_fip_evt(struct lpfc_hba *phba,
4396                         struct lpfc_acqe_fip *acqe_fip)
4397 {
4398         uint8_t event_type = bf_get(lpfc_trailer_type, acqe_fip);
4399         int rc;
4400         struct lpfc_vport *vport;
4401         struct lpfc_nodelist *ndlp;
4402         struct Scsi_Host  *shost;
4403         int active_vlink_present;
4404         struct lpfc_vport **vports;
4405         int i;
4406 
4407         phba->fc_eventTag = acqe_fip->event_tag;
4408         phba->fcoe_eventtag = acqe_fip->event_tag;
4409         switch (event_type) {
4410         case LPFC_FIP_EVENT_TYPE_NEW_FCF:
4411         case LPFC_FIP_EVENT_TYPE_FCF_PARAM_MOD:
4412                 if (event_type == LPFC_FIP_EVENT_TYPE_NEW_FCF)
4413                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
4414                                         LOG_DISCOVERY,
4415                                         "2546 New FCF event, evt_tag:x%x, "
4416                                         "index:x%x\n",
4417                                         acqe_fip->event_tag,
4418                                         acqe_fip->index);
4419                 else
4420                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP |
4421                                         LOG_DISCOVERY,
4422                                         "2788 FCF param modified event, "
4423                                         "evt_tag:x%x, index:x%x\n",
4424                                         acqe_fip->event_tag,
4425                                         acqe_fip->index);
4426                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
4427                         /*
4428                          * During period of FCF discovery, read the FCF
4429                          * table record indexed by the event to update
4430                          * FCF roundrobin failover eligible FCF bmask.
4431                          */
4432                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
4433                                         LOG_DISCOVERY,
4434                                         "2779 Read FCF (x%x) for updating "
4435                                         "roundrobin FCF failover bmask\n",
4436                                         acqe_fip->index);
4437                         rc = lpfc_sli4_read_fcf_rec(phba, acqe_fip->index);
4438                 }
4439 
4440                 /* If the FCF discovery is in progress, do nothing. */
4441                 spin_lock_irq(&phba->hbalock);
4442                 if (phba->hba_flag & FCF_TS_INPROG) {
4443                         spin_unlock_irq(&phba->hbalock);
4444                         break;
4445                 }
4446                 /* If fast FCF failover rescan event is pending, do nothing */
4447                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT) {
4448                         spin_unlock_irq(&phba->hbalock);
4449                         break;
4450                 }
4451 
4452                 /* If the FCF has been in discovered state, do nothing. */
4453                 if (phba->fcf.fcf_flag & FCF_SCAN_DONE) {
4454                         spin_unlock_irq(&phba->hbalock);
4455                         break;
4456                 }
4457                 spin_unlock_irq(&phba->hbalock);
4458 
4459                 /* Otherwise, scan the entire FCF table and re-discover SAN */
4460                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
4461                                 "2770 Start FCF table scan per async FCF "
4462                                 "event, evt_tag:x%x, index:x%x\n",
4463                                 acqe_fip->event_tag, acqe_fip->index);
4464                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
4465                                                      LPFC_FCOE_FCF_GET_FIRST);
4466                 if (rc)
4467                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
4468                                         "2547 Issue FCF scan read FCF mailbox "
4469                                         "command failed (x%x)\n", rc);
4470                 break;
4471 
4472         case LPFC_FIP_EVENT_TYPE_FCF_TABLE_FULL:
4473                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4474                         "2548 FCF Table full count 0x%x tag 0x%x\n",
4475                         bf_get(lpfc_acqe_fip_fcf_count, acqe_fip),
4476                         acqe_fip->event_tag);
4477                 break;
4478 
4479         case LPFC_FIP_EVENT_TYPE_FCF_DEAD:
4480                 phba->fcoe_cvl_eventtag = acqe_fip->event_tag;
4481                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
4482                         "2549 FCF (x%x) disconnected from network, "
4483                         "tag:x%x\n", acqe_fip->index, acqe_fip->event_tag);
4484                 /*
4485                  * If we are in the middle of FCF failover process, clear
4486                  * the corresponding FCF bit in the roundrobin bitmap.
4487                  */
4488                 spin_lock_irq(&phba->hbalock);
4489                 if ((phba->fcf.fcf_flag & FCF_DISCOVERY) &&
4490                     (phba->fcf.current_rec.fcf_indx != acqe_fip->index)) {
4491                         spin_unlock_irq(&phba->hbalock);
4492                         /* Update FLOGI FCF failover eligible FCF bmask */
4493                         lpfc_sli4_fcf_rr_index_clear(phba, acqe_fip->index);
4494                         break;
4495                 }
4496                 spin_unlock_irq(&phba->hbalock);
4497 
4498                 /* If the event is not for currently used fcf do nothing */
4499                 if (phba->fcf.current_rec.fcf_indx != acqe_fip->index)
4500                         break;
4501 
4502                 /*
4503                  * Otherwise, request the port to rediscover the entire FCF
4504                  * table for a fast recovery from case that the current FCF
4505                  * is no longer valid as we are not in the middle of FCF
4506                  * failover process already.
4507                  */
4508                 spin_lock_irq(&phba->hbalock);
4509                 /* Mark the fast failover process in progress */
4510                 phba->fcf.fcf_flag |= FCF_DEAD_DISC;
4511                 spin_unlock_irq(&phba->hbalock);
4512 
4513                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
4514                                 "2771 Start FCF fast failover process due to "
4515                                 "FCF DEAD event: evt_tag:x%x, fcf_index:x%x "
4516                                 "\n", acqe_fip->event_tag, acqe_fip->index);
4517                 rc = lpfc_sli4_redisc_fcf_table(phba);
4518                 if (rc) {
4519                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
4520                                         LOG_DISCOVERY,
4521                                         "2772 Issue FCF rediscover mabilbox "
4522                                         "command failed, fail through to FCF "
4523                                         "dead event\n");
4524                         spin_lock_irq(&phba->hbalock);
4525                         phba->fcf.fcf_flag &= ~FCF_DEAD_DISC;
4526                         spin_unlock_irq(&phba->hbalock);
4527                         /*
4528                          * Last resort will fail over by treating this
4529                          * as a link down to FCF registration.
4530                          */
4531                         lpfc_sli4_fcf_dead_failthrough(phba);
4532                 } else {
4533                         /* Reset FCF roundrobin bmask for new discovery */
4534                         lpfc_sli4_clear_fcf_rr_bmask(phba);
4535                         /*
4536                          * Handling fast FCF failover to a DEAD FCF event is
4537                          * considered equalivant to receiving CVL to all vports.
4538                          */
4539                         lpfc_sli4_perform_all_vport_cvl(phba);
4540                 }
4541                 break;
4542         case LPFC_FIP_EVENT_TYPE_CVL:
4543                 phba->fcoe_cvl_eventtag = acqe_fip->event_tag;
4544                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
4545                         "2718 Clear Virtual Link Received for VPI 0x%x"
4546                         " tag 0x%x\n", acqe_fip->index, acqe_fip->event_tag);
4547 
4548                 vport = lpfc_find_vport_by_vpid(phba,
4549                                                 acqe_fip->index);
4550                 ndlp = lpfc_sli4_perform_vport_cvl(vport);
4551                 if (!ndlp)
4552                         break;
4553                 active_vlink_present = 0;
4554 
4555                 vports = lpfc_create_vport_work_array(phba);
4556                 if (vports) {
4557                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
4558                                         i++) {
4559                                 if ((!(vports[i]->fc_flag &
4560                                         FC_VPORT_CVL_RCVD)) &&
4561                                         (vports[i]->port_state > LPFC_FDISC)) {
4562                                         active_vlink_present = 1;
4563                                         break;
4564                                 }
4565                         }
4566                         lpfc_destroy_vport_work_array(phba, vports);
4567                 }
4568 
4569                 /*
4570                  * Don't re-instantiate if vport is marked for deletion.
4571                  * If we are here first then vport_delete is going to wait
4572                  * for discovery to complete.
4573                  */
4574                 if (!(vport->load_flag & FC_UNLOADING) &&
4575                                         active_vlink_present) {
4576                         /*
4577                          * If there are other active VLinks present,
4578                          * re-instantiate the Vlink using FDISC.
4579                          */
4580                         mod_timer(&ndlp->nlp_delayfunc,
4581                                   jiffies + msecs_to_jiffies(1000));
4582                         shost = lpfc_shost_from_vport(vport);
4583                         spin_lock_irq(shost->host_lock);
4584                         ndlp->nlp_flag |= NLP_DELAY_TMO;
4585                         spin_unlock_irq(shost->host_lock);
4586                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
4587                         vport->port_state = LPFC_FDISC;
4588                 } else {
4589                         /*
4590                          * Otherwise, we request port to rediscover
4591                          * the entire FCF table for a fast recovery
4592                          * from possible case that the current FCF
4593                          * is no longer valid if we are not already
4594                          * in the FCF failover process.
4595                          */
4596                         spin_lock_irq(&phba->hbalock);
4597                         if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
4598                                 spin_unlock_irq(&phba->hbalock);
4599                                 break;
4600                         }
4601                         /* Mark the fast failover process in progress */
4602                         phba->fcf.fcf_flag |= FCF_ACVL_DISC;
4603                         spin_unlock_irq(&phba->hbalock);
4604                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
4605                                         LOG_DISCOVERY,
4606                                         "2773 Start FCF failover per CVL, "
4607                                         "evt_tag:x%x\n", acqe_fip->event_tag);
4608                         rc = lpfc_sli4_redisc_fcf_table(phba);
4609                         if (rc) {
4610                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
4611                                                 LOG_DISCOVERY,
4612                                                 "2774 Issue FCF rediscover "
4613                                                 "mabilbox command failed, "
4614                                                 "through to CVL event\n");
4615                                 spin_lock_irq(&phba->hbalock);
4616                                 phba->fcf.fcf_flag &= ~FCF_ACVL_DISC;
4617                                 spin_unlock_irq(&phba->hbalock);
4618                                 /*
4619                                  * Last resort will be re-try on the
4620                                  * the current registered FCF entry.
4621                                  */
4622                                 lpfc_retry_pport_discovery(phba);
4623                         } else
4624                                 /*
4625                                  * Reset FCF roundrobin bmask for new
4626                                  * discovery.
4627                                  */
4628                                 lpfc_sli4_clear_fcf_rr_bmask(phba);
4629                 }
4630                 break;
4631         default:
4632                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4633                         "0288 Unknown FCoE event type 0x%x event tag "
4634                         "0x%x\n", event_type, acqe_fip->event_tag);
4635                 break;
4636         }
4637 }
4638 
4639 /**
4640  * lpfc_sli4_async_dcbx_evt - Process the asynchronous dcbx event
4641  * @phba: pointer to lpfc hba data structure.
4642  * @acqe_link: pointer to the async dcbx completion queue entry.
4643  *
4644  * This routine is to handle the SLI4 asynchronous dcbx event.
4645  **/
4646 static void
4647 lpfc_sli4_async_dcbx_evt(struct lpfc_hba *phba,
4648                          struct lpfc_acqe_dcbx *acqe_dcbx)
4649 {
4650         phba->fc_eventTag = acqe_dcbx->event_tag;
4651         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4652                         "0290 The SLI4 DCBX asynchronous event is not "
4653                         "handled yet\n");
4654 }
4655 
4656 /**
4657  * lpfc_sli4_async_grp5_evt - Process the asynchronous group5 event
4658  * @phba: pointer to lpfc hba data structure.
4659  * @acqe_link: pointer to the async grp5 completion queue entry.
4660  *
4661  * This routine is to handle the SLI4 asynchronous grp5 event. A grp5 event
4662  * is an asynchronous notified of a logical link speed change.  The Port
4663  * reports the logical link speed in units of 10Mbps.
4664  **/
4665 static void
4666 lpfc_sli4_async_grp5_evt(struct lpfc_hba *phba,
4667                          struct lpfc_acqe_grp5 *acqe_grp5)
4668 {
4669         uint16_t prev_ll_spd;
4670 
4671         phba->fc_eventTag = acqe_grp5->event_tag;
4672         phba->fcoe_eventtag = acqe_grp5->event_tag;
4673         prev_ll_spd = phba->sli4_hba.link_state.logical_speed;
4674         phba->sli4_hba.link_state.logical_speed =
4675                 (bf_get(lpfc_acqe_grp5_llink_spd, acqe_grp5)) * 10;
4676         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4677                         "2789 GRP5 Async Event: Updating logical link speed "
4678                         "from %dMbps to %dMbps\n", prev_ll_spd,
4679                         phba->sli4_hba.link_state.logical_speed);
4680 }
4681 
4682 /**
4683  * lpfc_sli4_async_event_proc - Process all the pending asynchronous event
4684  * @phba: pointer to lpfc hba data structure.
4685  *
4686  * This routine is invoked by the worker thread to process all the pending
4687  * SLI4 asynchronous events.
4688  **/
4689 void lpfc_sli4_async_event_proc(struct lpfc_hba *phba)
4690 {
4691         struct lpfc_cq_event *cq_event;
4692 
4693         /* First, declare the async event has been handled */
4694         spin_lock_irq(&phba->hbalock);
4695         phba->hba_flag &= ~ASYNC_EVENT;
4696         spin_unlock_irq(&phba->hbalock);
4697         /* Now, handle all the async events */
4698         while (!list_empty(&phba->sli4_hba.sp_asynce_work_queue)) {
4699                 /* Get the first event from the head of the event queue */
4700                 spin_lock_irq(&phba->hbalock);
4701                 list_remove_head(&phba->sli4_hba.sp_asynce_work_queue,
4702                                  cq_event, struct lpfc_cq_event, list);
4703                 spin_unlock_irq(&phba->hbalock);
4704                 /* Process the asynchronous event */
4705                 switch (bf_get(lpfc_trailer_code, &cq_event->cqe.mcqe_cmpl)) {
4706                 case LPFC_TRAILER_CODE_LINK:
4707                         lpfc_sli4_async_link_evt(phba,
4708                                                  &cq_event->cqe.acqe_link);
4709                         break;
4710                 case LPFC_TRAILER_CODE_FCOE:
4711                         lpfc_sli4_async_fip_evt(phba, &cq_event->cqe.acqe_fip);
4712                         break;
4713                 case LPFC_TRAILER_CODE_DCBX:
4714                         lpfc_sli4_async_dcbx_evt(phba,
4715                                                  &cq_event->cqe.acqe_dcbx);
4716                         break;
4717                 case LPFC_TRAILER_CODE_GRP5:
4718                         lpfc_sli4_async_grp5_evt(phba,
4719                                                  &cq_event->cqe.acqe_grp5);
4720                         break;
4721                 case LPFC_TRAILER_CODE_FC:
4722                         lpfc_sli4_async_fc_evt(phba, &cq_event->cqe.acqe_fc);
4723                         break;
4724                 case LPFC_TRAILER_CODE_SLI:
4725                         lpfc_sli4_async_sli_evt(phba, &cq_event->cqe.acqe_sli);
4726                         break;
4727                 default:
4728                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4729                                         "1804 Invalid asynchrous event code: "
4730                                         "x%x\n", bf_get(lpfc_trailer_code,
4731                                         &cq_event->cqe.mcqe_cmpl));
4732                         break;
4733                 }
4734                 /* Free the completion event processed to the free pool */
4735                 lpfc_sli4_cq_event_release(phba, cq_event);
4736         }
4737 }
4738 
4739 /**
4740  * lpfc_sli4_fcf_redisc_event_proc - Process fcf table rediscovery event
4741  * @phba: pointer to lpfc hba data structure.
4742  *
4743  * This routine is invoked by the worker thread to process FCF table
4744  * rediscovery pending completion event.
4745  **/
4746 void lpfc_sli4_fcf_redisc_event_proc(struct lpfc_hba *phba)
4747 {
4748         int rc;
4749 
4750         spin_lock_irq(&phba->hbalock);
4751         /* Clear FCF rediscovery timeout event */
4752         phba->fcf.fcf_flag &= ~FCF_REDISC_EVT;
4753         /* Clear driver fast failover FCF record flag */
4754         phba->fcf.failover_rec.flag = 0;
4755         /* Set state for FCF fast failover */
4756         phba->fcf.fcf_flag |= FCF_REDISC_FOV;
4757         spin_unlock_irq(&phba->hbalock);
4758 
4759         /* Scan FCF table from the first entry to re-discover SAN */
4760         lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
4761                         "2777 Start post-quiescent FCF table scan\n");
4762         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
4763         if (rc)
4764                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
4765                                 "2747 Issue FCF scan read FCF mailbox "
4766                                 "command failed 0x%x\n", rc);
4767 }
4768 
4769 /**
4770  * lpfc_api_table_setup - Set up per hba pci-device group func api jump table
4771  * @phba: pointer to lpfc hba data structure.
4772  * @dev_grp: The HBA PCI-Device group number.
4773  *
4774  * This routine is invoked to set up the per HBA PCI-Device group function
4775  * API jump table entries.
4776  *
4777  * Return: 0 if success, otherwise -ENODEV
4778  **/
4779 int
4780 lpfc_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
4781 {
4782         int rc;
4783 
4784         /* Set up lpfc PCI-device group */
4785         phba->pci_dev_grp = dev_grp;
4786 
4787         /* The LPFC_PCI_DEV_OC uses SLI4 */
4788         if (dev_grp == LPFC_PCI_DEV_OC)
4789                 phba->sli_rev = LPFC_SLI_REV4;
4790 
4791         /* Set up device INIT API function jump table */
4792         rc = lpfc_init_api_table_setup(phba, dev_grp);
4793         if (rc)
4794                 return -ENODEV;
4795         /* Set up SCSI API function jump table */
4796         rc = lpfc_scsi_api_table_setup(phba, dev_grp);
4797         if (rc)
4798                 return -ENODEV;
4799         /* Set up SLI API function jump table */
4800         rc = lpfc_sli_api_table_setup(phba, dev_grp);
4801         if (rc)
4802                 return -ENODEV;
4803         /* Set up MBOX API function jump table */
4804         rc = lpfc_mbox_api_table_setup(phba, dev_grp);
4805         if (rc)
4806                 return -ENODEV;
4807 
4808         return 0;
4809 }
4810 
4811 /**
4812  * lpfc_log_intr_mode - Log the active interrupt mode
4813  * @phba: pointer to lpfc hba data structure.
4814  * @intr_mode: active interrupt mode adopted.
4815  *
4816  * This routine it invoked to log the currently used active interrupt mode
4817  * to the device.
4818  **/
4819 static void lpfc_log_intr_mode(struct lpfc_hba *phba, uint32_t intr_mode)
4820 {
4821         switch (intr_mode) {
4822         case 0:
4823                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4824                                 "0470 Enable INTx interrupt mode.\n");
4825                 break;
4826         case 1:
4827                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4828                                 "0481 Enabled MSI interrupt mode.\n");
4829                 break;
4830         case 2:
4831                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4832                                 "0480 Enabled MSI-X interrupt mode.\n");
4833                 break;
4834         default:
4835                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4836                                 "0482 Illegal interrupt mode.\n");
4837                 break;
4838         }
4839         return;
4840 }
4841 
4842 /**
4843  * lpfc_enable_pci_dev - Enable a generic PCI device.
4844  * @phba: pointer to lpfc hba data structure.
4845  *
4846  * This routine is invoked to enable the PCI device that is common to all
4847  * PCI devices.
4848  *
4849  * Return codes
4850  *      0 - successful
4851  *      other values - error
4852  **/
4853 static int
4854 lpfc_enable_pci_dev(struct lpfc_hba *phba)
4855 {
4856         struct pci_dev *pdev;
4857 
4858         /* Obtain PCI device reference */
4859         if (!phba->pcidev)
4860                 goto out_error;
4861         else
4862                 pdev = phba->pcidev;
4863         /* Enable PCI device */
4864         if (pci_enable_device_mem(pdev))
4865                 goto out_error;
4866         /* Request PCI resource for the device */
4867         if (pci_request_mem_regions(pdev, LPFC_DRIVER_NAME))
4868                 goto out_disable_device;
4869         /* Set up device as PCI master and save state for EEH */
4870         pci_set_master(pdev);
4871         pci_try_set_mwi(pdev);
4872         pci_save_state(pdev);
4873 
4874         /* PCIe EEH recovery on powerpc platforms needs fundamental reset */
4875         if (pci_is_pcie(pdev))
4876                 pdev->needs_freset = 1;
4877 
4878         return 0;
4879 
4880 out_disable_device:
4881         pci_disable_device(pdev);
4882 out_error:
4883         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4884                         "1401 Failed to enable pci device\n");
4885         return -ENODEV;
4886 }
4887 
4888 /**
4889  * lpfc_disable_pci_dev - Disable a generic PCI device.
4890  * @phba: pointer to lpfc hba data structure.
4891  *
4892  * This routine is invoked to disable the PCI device that is common to all
4893  * PCI devices.
4894  **/
4895 static void
4896 lpfc_disable_pci_dev(struct lpfc_hba *phba)
4897 {
4898         struct pci_dev *pdev;
4899 
4900         /* Obtain PCI device reference */
4901         if (!phba->pcidev)
4902                 return;
4903         else
4904                 pdev = phba->pcidev;
4905         /* Release PCI resource and disable PCI device */
4906         pci_release_mem_regions(pdev);
4907         pci_disable_device(pdev);
4908 
4909         return;
4910 }
4911 
4912 /**
4913  * lpfc_reset_hba - Reset a hba
4914  * @phba: pointer to lpfc hba data structure.
4915  *
4916  * This routine is invoked to reset a hba device. It brings the HBA
4917  * offline, performs a board restart, and then brings the board back
4918  * online. The lpfc_offline calls lpfc_sli_hba_down which will clean up
4919  * on outstanding mailbox commands.
4920  **/
4921 void
4922 lpfc_reset_hba(struct lpfc_hba *phba)
4923 {
4924         /* If resets are disabled then set error state and return. */
4925         if (!phba->cfg_enable_hba_reset) {
4926                 phba->link_state = LPFC_HBA_ERROR;
4927                 return;
4928         }
4929         if (phba->sli.sli_flag & LPFC_SLI_ACTIVE)
4930                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
4931         else
4932                 lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
4933         lpfc_offline(phba);
4934         lpfc_sli_brdrestart(phba);
4935         lpfc_online(phba);
4936         lpfc_unblock_mgmt_io(phba);
4937 }
4938 
4939 /**
4940  * lpfc_sli_sriov_nr_virtfn_get - Get the number of sr-iov virtual functions
4941  * @phba: pointer to lpfc hba data structure.
4942  *
4943  * This function enables the PCI SR-IOV virtual functions to a physical
4944  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
4945  * enable the number of virtual functions to the physical function. As
4946  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
4947  * API call does not considered as an error condition for most of the device.
4948  **/
4949 uint16_t
4950 lpfc_sli_sriov_nr_virtfn_get(struct lpfc_hba *phba)
4951 {
4952         struct pci_dev *pdev = phba->pcidev;
4953         uint16_t nr_virtfn;
4954         int pos;
4955 
4956         pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
4957         if (pos == 0)
4958                 return 0;
4959 
4960         pci_read_config_word(pdev, pos + PCI_SRIOV_TOTAL_VF, &nr_virtfn);
4961         return nr_virtfn;
4962 }
4963 
4964 /**
4965  * lpfc_sli_probe_sriov_nr_virtfn - Enable a number of sr-iov virtual functions
4966  * @phba: pointer to lpfc hba data structure.
4967  * @nr_vfn: number of virtual functions to be enabled.
4968  *
4969  * This function enables the PCI SR-IOV virtual functions to a physical
4970  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
4971  * enable the number of virtual functions to the physical function. As
4972  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
4973  * API call does not considered as an error condition for most of the device.
4974  **/
4975 int
4976 lpfc_sli_probe_sriov_nr_virtfn(struct lpfc_hba *phba, int nr_vfn)
4977 {
4978         struct pci_dev *pdev = phba->pcidev;
4979         uint16_t max_nr_vfn;
4980         int rc;
4981 
4982         max_nr_vfn = lpfc_sli_sriov_nr_virtfn_get(phba);
4983         if (nr_vfn > max_nr_vfn) {
4984                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4985                                 "3057 Requested vfs (%d) greater than "
4986                                 "supported vfs (%d)", nr_vfn, max_nr_vfn);
4987                 return -EINVAL;
4988         }
4989 
4990         rc = pci_enable_sriov(pdev, nr_vfn);
4991         if (rc) {
4992                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4993                                 "2806 Failed to enable sriov on this device "
4994                                 "with vfn number nr_vf:%d, rc:%d\n",
4995                                 nr_vfn, rc);
4996         } else
4997                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4998                                 "2807 Successful enable sriov on this device "
4999                                 "with vfn number nr_vf:%d\n", nr_vfn);
5000         return rc;
5001 }
5002 
5003 /**
5004  * lpfc_sli_driver_resource_setup - Setup driver internal resources for SLI3 dev.
5005  * @phba: pointer to lpfc hba data structure.
5006  *
5007  * This routine is invoked to set up the driver internal resources specific to
5008  * support the SLI-3 HBA device it attached to.
5009  *
5010  * Return codes
5011  *      0 - successful
5012  *      other values - error
5013  **/
5014 static int
5015 lpfc_sli_driver_resource_setup(struct lpfc_hba *phba)
5016 {
5017         struct lpfc_sli *psli;
5018         int rc;
5019 
5020         /*
5021          * Initialize timers used by driver
5022          */
5023 
5024         /* Heartbeat timer */
5025         init_timer(&phba->hb_tmofunc);
5026         phba->hb_tmofunc.function = lpfc_hb_timeout;
5027         phba->hb_tmofunc.data = (unsigned long)phba;
5028 
5029         psli = &phba->sli;
5030         /* MBOX heartbeat timer */
5031         init_timer(&psli->mbox_tmo);
5032         psli->mbox_tmo.function = lpfc_mbox_timeout;
5033         psli->mbox_tmo.data = (unsigned long) phba;
5034         /* FCP polling mode timer */
5035         init_timer(&phba->fcp_poll_timer);
5036         phba->fcp_poll_timer.function = lpfc_poll_timeout;
5037         phba->fcp_poll_timer.data = (unsigned long) phba;
5038         /* Fabric block timer */
5039         init_timer(&phba->fabric_block_timer);
5040         phba->fabric_block_timer.function = lpfc_fabric_block_timeout;
5041         phba->fabric_block_timer.data = (unsigned long) phba;
5042         /* EA polling mode timer */
5043         init_timer(&phba->eratt_poll);
5044         phba->eratt_poll.function = lpfc_poll_eratt;
5045         phba->eratt_poll.data = (unsigned long) phba;
5046 
5047         /* Host attention work mask setup */
5048         phba->work_ha_mask = (HA_ERATT | HA_MBATT | HA_LATT);
5049         phba->work_ha_mask |= (HA_RXMASK << (LPFC_ELS_RING * 4));
5050 
5051         /* Get all the module params for configuring this host */
5052         lpfc_get_cfgparam(phba);
5053         if (phba->pcidev->device == PCI_DEVICE_ID_HORNET) {
5054                 phba->menlo_flag |= HBA_MENLO_SUPPORT;
5055                 /* check for menlo minimum sg count */
5056                 if (phba->cfg_sg_seg_cnt < LPFC_DEFAULT_MENLO_SG_SEG_CNT)
5057                         phba->cfg_sg_seg_cnt = LPFC_DEFAULT_MENLO_SG_SEG_CNT;
5058         }
5059 
5060         if (!phba->sli.ring)
5061                 phba->sli.ring = kzalloc(LPFC_SLI3_MAX_RING *
5062                         sizeof(struct lpfc_sli_ring), GFP_KERNEL);
5063         if (!phba->sli.ring)
5064                 return -ENOMEM;
5065 
5066         /*
5067          * Since lpfc_sg_seg_cnt is module parameter, the sg_dma_buf_size
5068          * used to create the sg_dma_buf_pool must be dynamically calculated.
5069          */
5070 
5071         /* Initialize the host templates the configured values. */
5072         lpfc_vport_template.sg_tablesize = phba->cfg_sg_seg_cnt;
5073         lpfc_template_s3.sg_tablesize = phba->cfg_sg_seg_cnt;
5074 
5075         /* There are going to be 2 reserved BDEs: 1 FCP cmnd + 1 FCP rsp */
5076         if (phba->cfg_enable_bg) {
5077                 /*
5078                  * The scsi_buf for a T10-DIF I/O will hold the FCP cmnd,
5079                  * the FCP rsp, and a BDE for each. Sice we have no control
5080                  * over how many protection data segments the SCSI Layer
5081                  * will hand us (ie: there could be one for every block
5082                  * in the IO), we just allocate enough BDEs to accomidate
5083                  * our max amount and we need to limit lpfc_sg_seg_cnt to
5084                  * minimize the risk of running out.
5085                  */
5086                 phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
5087                         sizeof(struct fcp_rsp) +
5088                         (LPFC_MAX_SG_SEG_CNT * sizeof(struct ulp_bde64));
5089 
5090                 if (phba->cfg_sg_seg_cnt > LPFC_MAX_SG_SEG_CNT_DIF)
5091                         phba->cfg_sg_seg_cnt = LPFC_MAX_SG_SEG_CNT_DIF;
5092 
5093                 /* Total BDEs in BPL for scsi_sg_list and scsi_sg_prot_list */
5094                 phba->cfg_total_seg_cnt = LPFC_MAX_SG_SEG_CNT;
5095         } else {
5096                 /*
5097                  * The scsi_buf for a regular I/O will hold the FCP cmnd,
5098                  * the FCP rsp, a BDE for each, and a BDE for up to
5099                  * cfg_sg_seg_cnt data segments.
5100                  */
5101                 phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
5102                         sizeof(struct fcp_rsp) +
5103                         ((phba->cfg_sg_seg_cnt + 2) * sizeof(struct ulp_bde64));
5104 
5105                 /* Total BDEs in BPL for scsi_sg_list */
5106                 phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + 2;
5107         }
5108 
5109         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
5110                         "9088 sg_tablesize:%d dmabuf_size:%d total_bde:%d\n",
5111                         phba->cfg_sg_seg_cnt, phba->cfg_sg_dma_buf_size,
5112                         phba->cfg_total_seg_cnt);
5113 
5114         phba->max_vpi = LPFC_MAX_VPI;
5115         /* This will be set to correct value after config_port mbox */
5116         phba->max_vports = 0;
5117 
5118         /*
5119          * Initialize the SLI Layer to run with lpfc HBAs.
5120          */
5121         lpfc_sli_setup(phba);
5122         lpfc_sli_queue_setup(phba);
5123 
5124         /* Allocate device driver memory */
5125         if (lpfc_mem_alloc(phba, BPL_ALIGN_SZ))
5126                 return -ENOMEM;
5127 
5128         /*
5129          * Enable sr-iov virtual functions if supported and configured
5130          * through the module parameter.
5131          */
5132         if (phba->cfg_sriov_nr_virtfn > 0) {
5133                 rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
5134                                                  phba->cfg_sriov_nr_virtfn);
5135                 if (rc) {
5136                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
5137                                         "2808 Requested number of SR-IOV "
5138                                         "virtual functions (%d) is not "
5139                                         "supported\n",
5140                                         phba->cfg_sriov_nr_virtfn);
5141                         phba->cfg_sriov_nr_virtfn = 0;
5142                 }
5143         }
5144 
5145         return 0;
5146 }
5147 
5148 /**
5149  * lpfc_sli_driver_resource_unset - Unset drvr internal resources for SLI3 dev
5150  * @phba: pointer to lpfc hba data structure.
5151  *
5152  * This routine is invoked to unset the driver internal resources set up
5153  * specific for supporting the SLI-3 HBA device it attached to.
5154  **/
5155 static void
5156 lpfc_sli_driver_resource_unset(struct lpfc_hba *phba)
5157 {
5158         /* Free device driver memory allocated */
5159         lpfc_mem_free_all(phba);
5160 
5161         return;
5162 }
5163 
5164 /**
5165  * lpfc_sli4_driver_resource_setup - Setup drvr internal resources for SLI4 dev
5166  * @phba: pointer to lpfc hba data structure.
5167  *
5168  * This routine is invoked to set up the driver internal resources specific to
5169  * support the SLI-4 HBA device it attached to.
5170  *
5171  * Return codes
5172  *      0 - successful
5173  *      other values - error
5174  **/
5175 static int
5176 lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
5177 {
5178         struct lpfc_vector_map_info *cpup;
5179         struct lpfc_sli *psli;
5180         LPFC_MBOXQ_t *mboxq;
5181         int rc, i, hbq_count, max_buf_size;
5182         uint8_t pn_page[LPFC_MAX_SUPPORTED_PAGES] = {0};
5183         struct lpfc_mqe *mqe;
5184         int longs;
5185         int fof_vectors = 0;
5186 
5187         /* Get all the module params for configuring this host */
5188         lpfc_get_cfgparam(phba);
5189 
5190         /* Before proceed, wait for POST done and device ready */
5191         rc = lpfc_sli4_post_status_check(phba);
5192         if (rc)
5193                 return -ENODEV;
5194 
5195         /*
5196          * Initialize timers used by driver
5197          */
5198 
5199         /* Heartbeat timer */
5200         init_timer(&phba->hb_tmofunc);
5201         phba->hb_tmofunc.function = lpfc_hb_timeout;
5202         phba->hb_tmofunc.data = (unsigned long)phba;
5203         init_timer(&phba->rrq_tmr);
5204         phba->rrq_tmr.function = lpfc_rrq_timeout;
5205         phba->rrq_tmr.data = (unsigned long)phba;
5206 
5207         psli = &phba->sli;
5208         /* MBOX heartbeat timer */
5209         init_timer(&psli->mbox_tmo);
5210         psli->mbox_tmo.function = lpfc_mbox_timeout;
5211         psli->mbox_tmo.data = (unsigned long) phba;
5212         /* Fabric block timer */
5213         init_timer(&phba->fabric_block_timer);
5214         phba->fabric_block_timer.function = lpfc_fabric_block_timeout;
5215         phba->fabric_block_timer.data = (unsigned long) phba;
5216         /* EA polling mode timer */
5217         init_timer(&phba->eratt_poll);
5218         phba->eratt_poll.function = lpfc_poll_eratt;
5219         phba->eratt_poll.data = (unsigned long) phba;
5220         /* FCF rediscover timer */
5221         init_timer(&phba->fcf.redisc_wait);
5222         phba->fcf.redisc_wait.function = lpfc_sli4_fcf_redisc_wait_tmo;
5223         phba->fcf.redisc_wait.data = (unsigned long)phba;
5224 
5225         /*
5226          * Control structure for handling external multi-buffer mailbox
5227          * command pass-through.
5228          */
5229         memset((uint8_t *)&phba->mbox_ext_buf_ctx, 0,
5230                 sizeof(struct lpfc_mbox_ext_buf_ctx));
5231         INIT_LIST_HEAD(&phba->mbox_ext_buf_ctx.ext_dmabuf_list);
5232 
5233         phba->max_vpi = LPFC_MAX_VPI;
5234 
5235         /* This will be set to correct value after the read_config mbox */
5236         phba->max_vports = 0;
5237 
5238         /* Program the default value of vlan_id and fc_map */
5239         phba->valid_vlan = 0;
5240         phba->fc_map[0] = LPFC_FCOE_FCF_MAP0;
5241         phba->fc_map[1] = LPFC_FCOE_FCF_MAP1;
5242         phba->fc_map[2] = LPFC_FCOE_FCF_MAP2;
5243 
5244         /*
5245          * For SLI4, instead of using ring 0 (LPFC_FCP_RING) for FCP commands
5246          * we will associate a new ring, for each FCP fastpath EQ/CQ/WQ tuple.
5247          */
5248         if (!phba->sli.ring)
5249                 phba->sli.ring = kzalloc(
5250                         (LPFC_SLI3_MAX_RING + phba->cfg_fcp_io_channel) *
5251                         sizeof(struct lpfc_sli_ring), GFP_KERNEL);
5252         if (!phba->sli.ring)
5253                 return -ENOMEM;
5254 
5255         /*
5256          * It doesn't matter what family our adapter is in, we are
5257          * limited to 2 Pages, 512 SGEs, for our SGL.
5258          * There are going to be 2 reserved SGEs: 1 FCP cmnd + 1 FCP rsp
5259          */
5260         max_buf_size = (2 * SLI4_PAGE_SIZE);
5261         if (phba->cfg_sg_seg_cnt > LPFC_MAX_SGL_SEG_CNT - 2)
5262                 phba->cfg_sg_seg_cnt = LPFC_MAX_SGL_SEG_CNT - 2;
5263 
5264         /*
5265          * Since lpfc_sg_seg_cnt is module parameter, the sg_dma_buf_size
5266          * used to create the sg_dma_buf_pool must be dynamically calculated.
5267          */
5268 
5269         if (phba->cfg_enable_bg) {
5270                 /*
5271                  * The scsi_buf for a T10-DIF I/O will hold the FCP cmnd,
5272                  * the FCP rsp, and a SGE for each. Sice we have no control
5273                  * over how many protection data segments the SCSI Layer
5274                  * will hand us (ie: there could be one for every block
5275                  * in the IO), we just allocate enough SGEs to accomidate
5276                  * our max amount and we need to limit lpfc_sg_seg_cnt to
5277                  * minimize the risk of running out.
5278                  */
5279                 phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
5280                         sizeof(struct fcp_rsp) + max_buf_size;
5281 
5282                 /* Total SGEs for scsi_sg_list and scsi_sg_prot_list */
5283                 phba->cfg_total_seg_cnt = LPFC_MAX_SGL_SEG_CNT;
5284 
5285                 if (phba->cfg_sg_seg_cnt > LPFC_MAX_SG_SLI4_SEG_CNT_DIF)
5286                         phba->cfg_sg_seg_cnt = LPFC_MAX_SG_SLI4_SEG_CNT_DIF;
5287         } else {
5288                 /*
5289                  * The scsi_buf for a regular I/O will hold the FCP cmnd,
5290                  * the FCP rsp, a SGE for each, and a SGE for up to
5291                  * cfg_sg_seg_cnt data segments.
5292                  */
5293                 phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
5294                         sizeof(struct fcp_rsp) +
5295                         ((phba->cfg_sg_seg_cnt + 2) * sizeof(struct sli4_sge));
5296 
5297                 /* Total SGEs for scsi_sg_list */
5298                 phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + 2;
5299                 /*
5300                  * NOTE: if (phba->cfg_sg_seg_cnt + 2) <= 256 we only need
5301                  * to post 1 page for the SGL.
5302                  */
5303         }
5304 
5305         /* Initialize the host templates with the updated values. */
5306         lpfc_vport_template.sg_tablesize = phba->cfg_sg_seg_cnt;
5307         lpfc_template.sg_tablesize = phba->cfg_sg_seg_cnt;
5308 
5309         if (phba->cfg_sg_dma_buf_size  <= LPFC_MIN_SG_SLI4_BUF_SZ)
5310                 phba->cfg_sg_dma_buf_size = LPFC_MIN_SG_SLI4_BUF_SZ;
5311         else
5312                 phba->cfg_sg_dma_buf_size =
5313                         SLI4_PAGE_ALIGN(phba->cfg_sg_dma_buf_size);
5314 
5315         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
5316                         "9087 sg_tablesize:%d dmabuf_size:%d total_sge:%d\n",
5317                         phba->cfg_sg_seg_cnt, phba->cfg_sg_dma_buf_size,
5318                         phba->cfg_total_seg_cnt);
5319 
5320         /* Initialize buffer queue management fields */
5321         hbq_count = lpfc_sli_hbq_count();
5322         for (i = 0; i < hbq_count; ++i)
5323                 INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
5324         INIT_LIST_HEAD(&phba->rb_pend_list);
5325         phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_sli4_rb_alloc;
5326         phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_sli4_rb_free;
5327 
5328         /*
5329          * Initialize the SLI Layer to run with lpfc SLI4 HBAs.
5330          */
5331         /* Initialize the Abort scsi buffer list used by driver */
5332         spin_lock_init(&phba->sli4_hba.abts_scsi_buf_list_lock);
5333         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_scsi_buf_list);
5334         /* This abort list used by worker thread */
5335         spin_lock_init(&phba->sli4_hba.abts_sgl_list_lock);
5336 
5337         /*
5338          * Initialize driver internal slow-path work queues
5339          */
5340 
5341         /* Driver internel slow-path CQ Event pool */
5342         INIT_LIST_HEAD(&phba->sli4_hba.sp_cqe_event_pool);
5343         /* Response IOCB work queue list */
5344         INIT_LIST_HEAD(&phba->sli4_hba.sp_queue_event);
5345         /* Asynchronous event CQ Event work queue list */
5346         INIT_LIST_HEAD(&phba->sli4_hba.sp_asynce_work_queue);
5347         /* Fast-path XRI aborted CQ Event work queue list */
5348         INIT_LIST_HEAD(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue);
5349         /* Slow-path XRI aborted CQ Event work queue list */
5350         INIT_LIST_HEAD(&phba->sli4_hba.sp_els_xri_aborted_work_queue);
5351         /* Receive queue CQ Event work queue list */
5352         INIT_LIST_HEAD(&phba->sli4_hba.sp_unsol_work_queue);
5353 
5354         /* Initialize extent block lists. */
5355         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_blk_list);
5356         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_xri_blk_list);
5357         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_vfi_blk_list);
5358         INIT_LIST_HEAD(&phba->lpfc_vpi_blk_list);
5359 
5360         /* initialize optic_state to 0xFF */
5361         phba->sli4_hba.lnk_info.optic_state = 0xff;
5362 
5363         /* Initialize the driver internal SLI layer lists. */
5364         lpfc_sli_setup(phba);
5365         lpfc_sli_queue_setup(phba);
5366 
5367         /* Allocate device driver memory */
5368         rc = lpfc_mem_alloc(phba, SGL_ALIGN_SZ);
5369         if (rc)
5370                 return -ENOMEM;
5371 
5372         /* IF Type 2 ports get initialized now. */
5373         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
5374             LPFC_SLI_INTF_IF_TYPE_2) {
5375                 rc = lpfc_pci_function_reset(phba);
5376                 if (unlikely(rc))
5377                         return -ENODEV;
5378                 phba->temp_sensor_support = 1;
5379         }
5380 
5381         /* Create the bootstrap mailbox command */
5382         rc = lpfc_create_bootstrap_mbox(phba);
5383         if (unlikely(rc))
5384                 goto out_free_mem;
5385 
5386         /* Set up the host's endian order with the device. */
5387         rc = lpfc_setup_endian_order(phba);
5388         if (unlikely(rc))
5389                 goto out_free_bsmbx;
5390 
5391         /* Set up the hba's configuration parameters. */
5392         rc = lpfc_sli4_read_config(phba);
5393         if (unlikely(rc))
5394                 goto out_free_bsmbx;
5395         rc = lpfc_mem_alloc_active_rrq_pool_s4(phba);
5396         if (unlikely(rc))
5397                 goto out_free_bsmbx;
5398 
5399         /* IF Type 0 ports get initialized now. */
5400         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
5401             LPFC_SLI_INTF_IF_TYPE_0) {
5402                 rc = lpfc_pci_function_reset(phba);
5403                 if (unlikely(rc))
5404                         goto out_free_bsmbx;
5405         }
5406 
5407         mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
5408                                                        GFP_KERNEL);
5409         if (!mboxq) {
5410                 rc = -ENOMEM;
5411                 goto out_free_bsmbx;
5412         }
5413 
5414         /* Get the Supported Pages if PORT_CAPABILITIES is supported by port. */
5415         lpfc_supported_pages(mboxq);
5416         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
5417         if (!rc) {
5418                 mqe = &mboxq->u.mqe;
5419                 memcpy(&pn_page[0], ((uint8_t *)&mqe->un.supp_pages.word3),
5420                        LPFC_MAX_SUPPORTED_PAGES);
5421                 for (i = 0; i < LPFC_MAX_SUPPORTED_PAGES; i++) {
5422                         switch (pn_page[i]) {
5423                         case LPFC_SLI4_PARAMETERS:
5424                                 phba->sli4_hba.pc_sli4_params.supported = 1;
5425                                 break;
5426                         default:
5427                                 break;
5428                         }
5429                 }
5430                 /* Read the port's SLI4 Parameters capabilities if supported. */
5431                 if (phba->sli4_hba.pc_sli4_params.supported)
5432                         rc = lpfc_pc_sli4_params_get(phba, mboxq);
5433                 if (rc) {
5434                         mempool_free(mboxq, phba->mbox_mem_pool);
5435                         rc = -EIO;
5436                         goto out_free_bsmbx;
5437                 }
5438         }
5439 
5440         /*
5441          * Get sli4 parameters that override parameters from Port capabilities.
5442          * If this call fails, it isn't critical unless the SLI4 parameters come
5443          * back in conflict.
5444          */
5445         rc = lpfc_get_sli4_parameters(phba, mboxq);
5446         if (rc) {
5447                 if (phba->sli4_hba.extents_in_use &&
5448                     phba->sli4_hba.rpi_hdrs_in_use) {
5449                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5450                                 "2999 Unsupported SLI4 Parameters "
5451                                 "Extents and RPI headers enabled.\n");
5452                         goto out_free_bsmbx;
5453                 }
5454         }
5455         mempool_free(mboxq, phba->mbox_mem_pool);
5456 
5457         /* Verify OAS is supported */
5458         lpfc_sli4_oas_verify(phba);
5459         if (phba->cfg_fof)
5460                 fof_vectors = 1;
5461 
5462         /* Verify all the SLI4 queues */
5463         rc = lpfc_sli4_queue_verify(phba);
5464         if (rc)
5465                 goto out_free_bsmbx;
5466 
5467         /* Create driver internal CQE event pool */
5468         rc = lpfc_sli4_cq_event_pool_create(phba);
5469         if (rc)
5470                 goto out_free_bsmbx;
5471 
5472         /* Initialize sgl lists per host */
5473         lpfc_init_sgl_list(phba);
5474 
5475         /* Allocate and initialize active sgl array */
5476         rc = lpfc_init_active_sgl_array(phba);
5477         if (rc) {
5478                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5479                                 "1430 Failed to initialize sgl list.\n");
5480                 goto out_destroy_cq_event_pool;
5481         }
5482         rc = lpfc_sli4_init_rpi_hdrs(phba);
5483         if (rc) {
5484                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5485                                 "1432 Failed to initialize rpi headers.\n");
5486                 goto out_free_active_sgl;
5487         }
5488 
5489         /* Allocate eligible FCF bmask memory for FCF roundrobin failover */
5490         longs = (LPFC_SLI4_FCF_TBL_INDX_MAX + BITS_PER_LONG - 1)/BITS_PER_LONG;
5491         phba->fcf.fcf_rr_bmask = kzalloc(longs * sizeof(unsigned long),
5492                                          GFP_KERNEL);
5493         if (!phba->fcf.fcf_rr_bmask) {
5494                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5495                                 "2759 Failed allocate memory for FCF round "
5496                                 "robin failover bmask\n");
5497                 rc = -ENOMEM;
5498                 goto out_remove_rpi_hdrs;
5499         }
5500 
5501         phba->sli4_hba.fcp_eq_hdl =
5502                         kzalloc((sizeof(struct lpfc_fcp_eq_hdl) *
5503                             (fof_vectors + phba->cfg_fcp_io_channel)),
5504                             GFP_KERNEL);
5505         if (!phba->sli4_hba.fcp_eq_hdl) {
5506                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5507                                 "2572 Failed allocate memory for "
5508                                 "fast-path per-EQ handle array\n");
5509                 rc = -ENOMEM;
5510                 goto out_free_fcf_rr_bmask;
5511         }
5512 
5513         phba->sli4_hba.msix_entries = kzalloc((sizeof(struct msix_entry) *
5514                                   (fof_vectors +
5515                                    phba->cfg_fcp_io_channel)), GFP_KERNEL);
5516         if (!phba->sli4_hba.msix_entries) {
5517                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5518                                 "2573 Failed allocate memory for msi-x "
5519                                 "interrupt vector entries\n");
5520                 rc = -ENOMEM;
5521                 goto out_free_fcp_eq_hdl;
5522         }
5523 
5524         phba->sli4_hba.cpu_map = kzalloc((sizeof(struct lpfc_vector_map_info) *
5525                                          phba->sli4_hba.num_present_cpu),
5526                                          GFP_KERNEL);
5527         if (!phba->sli4_hba.cpu_map) {
5528                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5529                                 "3327 Failed allocate memory for msi-x "
5530                                 "interrupt vector mapping\n");
5531                 rc = -ENOMEM;
5532                 goto out_free_msix;
5533         }
5534         if (lpfc_used_cpu == NULL) {
5535                 lpfc_used_cpu = kzalloc((sizeof(uint16_t) * lpfc_present_cpu),
5536                                          GFP_KERNEL);
5537                 if (!lpfc_used_cpu) {
5538                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5539                                         "3335 Failed allocate memory for msi-x "
5540                                         "interrupt vector mapping\n");
5541                         kfree(phba->sli4_hba.cpu_map);
5542                         rc = -ENOMEM;
5543                         goto out_free_msix;
5544                 }
5545                 for (i = 0; i < lpfc_present_cpu; i++)
5546                         lpfc_used_cpu[i] = LPFC_VECTOR_MAP_EMPTY;
5547         }
5548 
5549         /* Initialize io channels for round robin */
5550         cpup = phba->sli4_hba.cpu_map;
5551         rc = 0;
5552         for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
5553                 cpup->channel_id = rc;
5554                 rc++;
5555                 if (rc >= phba->cfg_fcp_io_channel)
5556                         rc = 0;
5557         }
5558 
5559         /*
5560          * Enable sr-iov virtual functions if supported and configured
5561          * through the module parameter.
5562          */
5563         if (phba->cfg_sriov_nr_virtfn > 0) {
5564                 rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
5565                                                  phba->cfg_sriov_nr_virtfn);
5566                 if (rc) {
5567                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
5568                                         "3020 Requested number of SR-IOV "
5569                                         "virtual functions (%d) is not "
5570                                         "supported\n",
5571                                         phba->cfg_sriov_nr_virtfn);
5572                         phba->cfg_sriov_nr_virtfn = 0;
5573                 }
5574         }
5575 
5576         return 0;
5577 
5578 out_free_msix:
5579         kfree(phba->sli4_hba.msix_entries);
5580 out_free_fcp_eq_hdl:
5581         kfree(phba->sli4_hba.fcp_eq_hdl);
5582 out_free_fcf_rr_bmask:
5583         kfree(phba->fcf.fcf_rr_bmask);
5584 out_remove_rpi_hdrs:
5585         lpfc_sli4_remove_rpi_hdrs(phba);
5586 out_free_active_sgl:
5587         lpfc_free_active_sgl(phba);
5588 out_destroy_cq_event_pool:
5589         lpfc_sli4_cq_event_pool_destroy(phba);
5590 out_free_bsmbx:
5591         lpfc_destroy_bootstrap_mbox(phba);
5592 out_free_mem:
5593         lpfc_mem_free(phba);
5594         return rc;
5595 }
5596 
5597 /**
5598  * lpfc_sli4_driver_resource_unset - Unset drvr internal resources for SLI4 dev
5599  * @phba: pointer to lpfc hba data structure.
5600  *
5601  * This routine is invoked to unset the driver internal resources set up
5602  * specific for supporting the SLI-4 HBA device it attached to.
5603  **/
5604 static void
5605 lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba)
5606 {
5607         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
5608 
5609         /* Free memory allocated for msi-x interrupt vector to CPU mapping */
5610         kfree(phba->sli4_hba.cpu_map);
5611         phba->sli4_hba.num_present_cpu = 0;
5612         phba->sli4_hba.num_online_cpu = 0;
5613         phba->sli4_hba.curr_disp_cpu = 0;
5614 
5615         /* Free memory allocated for msi-x interrupt vector entries */
5616         kfree(phba->sli4_hba.msix_entries);
5617 
5618         /* Free memory allocated for fast-path work queue handles */
5619         kfree(phba->sli4_hba.fcp_eq_hdl);
5620 
5621         /* Free the allocated rpi headers. */
5622         lpfc_sli4_remove_rpi_hdrs(phba);
5623         lpfc_sli4_remove_rpis(phba);
5624 
5625         /* Free eligible FCF index bmask */
5626         kfree(phba->fcf.fcf_rr_bmask);
5627 
5628         /* Free the ELS sgl list */
5629         lpfc_free_active_sgl(phba);
5630         lpfc_free_els_sgl_list(phba);
5631 
5632         /* Free the completion queue EQ event pool */
5633         lpfc_sli4_cq_event_release_all(phba);
5634         lpfc_sli4_cq_event_pool_destroy(phba);
5635 
5636         /* Release resource identifiers. */
5637         lpfc_sli4_dealloc_resource_identifiers(phba);
5638 
5639         /* Free the bsmbx region. */
5640         lpfc_destroy_bootstrap_mbox(phba);
5641 
5642         /* Free the SLI Layer memory with SLI4 HBAs */
5643         lpfc_mem_free_all(phba);
5644 
5645         /* Free the current connect table */
5646         list_for_each_entry_safe(conn_entry, next_conn_entry,
5647                 &phba->fcf_conn_rec_list, list) {
5648                 list_del_init(&conn_entry->list);
5649                 kfree(conn_entry);
5650         }
5651 
5652         return;
5653 }
5654 
5655 /**
5656  * lpfc_init_api_table_setup - Set up init api function jump table
5657  * @phba: The hba struct for which this call is being executed.
5658  * @dev_grp: The HBA PCI-Device group number.
5659  *
5660  * This routine sets up the device INIT interface API function jump table
5661  * in @phba struct.
5662  *
5663  * Returns: 0 - success, -ENODEV - failure.
5664  **/
5665 int
5666 lpfc_init_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
5667 {
5668         phba->lpfc_hba_init_link = lpfc_hba_init_link;
5669         phba->lpfc_hba_down_link = lpfc_hba_down_link;
5670         phba->lpfc_selective_reset = lpfc_selective_reset;
5671         switch (dev_grp) {
5672         case LPFC_PCI_DEV_LP:
5673                 phba->lpfc_hba_down_post = lpfc_hba_down_post_s3;
5674                 phba->lpfc_handle_eratt = lpfc_handle_eratt_s3;
5675                 phba->lpfc_stop_port = lpfc_stop_port_s3;
5676                 break;
5677         case LPFC_PCI_DEV_OC:
5678                 phba->lpfc_hba_down_post = lpfc_hba_down_post_s4;
5679                 phba->lpfc_handle_eratt = lpfc_handle_eratt_s4;
5680                 phba->lpfc_stop_port = lpfc_stop_port_s4;
5681                 break;
5682         default:
5683                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5684                                 "1431 Invalid HBA PCI-device group: 0x%x\n",
5685                                 dev_grp);
5686                 return -ENODEV;
5687                 break;
5688         }
5689         return 0;
5690 }
5691 
5692 /**
5693  * lpfc_setup_driver_resource_phase1 - Phase1 etup driver internal resources.
5694  * @phba: pointer to lpfc hba data structure.
5695  *
5696  * This routine is invoked to set up the driver internal resources before the
5697  * device specific resource setup to support the HBA device it attached to.
5698  *
5699  * Return codes
5700  *      0 - successful
5701  *      other values - error
5702  **/
5703 static int
5704 lpfc_setup_driver_resource_phase1(struct lpfc_hba *phba)
5705 {
5706         /*
5707          * Driver resources common to all SLI revisions
5708          */
5709         atomic_set(&phba->fast_event_count, 0);
5710         spin_lock_init(&phba->hbalock);
5711 
5712         /* Initialize ndlp management spinlock */
5713         spin_lock_init(&phba->ndlp_lock);
5714 
5715         INIT_LIST_HEAD(&phba->port_list);
5716         INIT_LIST_HEAD(&phba->work_list);
5717         init_waitqueue_head(&phba->wait_4_mlo_m_q);
5718 
5719         /* Initialize the wait queue head for the kernel thread */
5720         init_waitqueue_head(&phba->work_waitq);
5721 
5722         /* Initialize the scsi buffer list used by driver for scsi IO */
5723         spin_lock_init(&phba->scsi_buf_list_get_lock);
5724         INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_get);
5725         spin_lock_init(&phba->scsi_buf_list_put_lock);
5726         INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put);
5727 
5728         /* Initialize the fabric iocb list */
5729         INIT_LIST_HEAD(&phba->fabric_iocb_list);
5730 
5731         /* Initialize list to save ELS buffers */
5732         INIT_LIST_HEAD(&phba->elsbuf);
5733 
5734         /* Initialize FCF connection rec list */
5735         INIT_LIST_HEAD(&phba->fcf_conn_rec_list);
5736 
5737         /* Initialize OAS configuration list */
5738         spin_lock_init(&phba->devicelock);
5739         INIT_LIST_HEAD(&phba->luns);
5740 
5741         return 0;
5742 }
5743 
5744 /**
5745  * lpfc_setup_driver_resource_phase2 - Phase2 setup driver internal resources.
5746  * @phba: pointer to lpfc hba data structure.
5747  *
5748  * This routine is invoked to set up the driver internal resources after the
5749  * device specific resource setup to support the HBA device it attached to.
5750  *
5751  * Return codes
5752  *      0 - successful
5753  *      other values - error
5754  **/
5755 static int
5756 lpfc_setup_driver_resource_phase2(struct lpfc_hba *phba)
5757 {
5758         int error;
5759 
5760         /* Startup the kernel thread for this host adapter. */
5761         phba->worker_thread = kthread_run(lpfc_do_work, phba,
5762                                           "lpfc_worker_%d", phba->brd_no);
5763         if (IS_ERR(phba->worker_thread)) {
5764                 error = PTR_ERR(phba->worker_thread);
5765                 return error;
5766         }
5767 
5768         return 0;
5769 }
5770 
5771 /**
5772  * lpfc_unset_driver_resource_phase2 - Phase2 unset driver internal resources.
5773  * @phba: pointer to lpfc hba data structure.
5774  *
5775  * This routine is invoked to unset the driver internal resources set up after
5776  * the device specific resource setup for supporting the HBA device it
5777  * attached to.
5778  **/
5779 static void
5780 lpfc_unset_driver_resource_phase2(struct lpfc_hba *phba)
5781 {
5782         /* Stop kernel worker thread */
5783         kthread_stop(phba->worker_thread);
5784 }
5785 
5786 /**
5787  * lpfc_free_iocb_list - Free iocb list.
5788  * @phba: pointer to lpfc hba data structure.
5789  *
5790  * This routine is invoked to free the driver's IOCB list and memory.
5791  **/
5792 static void
5793 lpfc_free_iocb_list(struct lpfc_hba *phba)
5794 {
5795         struct lpfc_iocbq *iocbq_entry = NULL, *iocbq_next = NULL;
5796 
5797         spin_lock_irq(&phba->hbalock);
5798         list_for_each_entry_safe(iocbq_entry, iocbq_next,
5799                                  &phba->lpfc_iocb_list, list) {
5800                 list_del(&iocbq_entry->list);
5801                 kfree(iocbq_entry);
5802                 phba->total_iocbq_bufs--;
5803         }
5804         spin_unlock_irq(&phba->hbalock);
5805 
5806         return;
5807 }
5808 
5809 /**
5810  * lpfc_init_iocb_list - Allocate and initialize iocb list.
5811  * @phba: pointer to lpfc hba data structure.
5812  *
5813  * This routine is invoked to allocate and initizlize the driver's IOCB
5814  * list and set up the IOCB tag array accordingly.
5815  *
5816  * Return codes
5817  *      0 - successful
5818  *      other values - error
5819  **/
5820 static int
5821 lpfc_init_iocb_list(struct lpfc_hba *phba, int iocb_count)
5822 {
5823         struct lpfc_iocbq *iocbq_entry = NULL;
5824         uint16_t iotag;
5825         int i;
5826 
5827         /* Initialize and populate the iocb list per host.  */
5828         INIT_LIST_HEAD(&phba->lpfc_iocb_list);
5829         for (i = 0; i < iocb_count; i++) {
5830                 iocbq_entry = kzalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL);
5831                 if (iocbq_entry == NULL) {
5832                         printk(KERN_ERR "%s: only allocated %d iocbs of "
5833                                 "expected %d count. Unloading driver.\n",
5834                                 __func__, i, LPFC_IOCB_LIST_CNT);
5835                         goto out_free_iocbq;
5836                 }
5837 
5838                 iotag = lpfc_sli_next_iotag(phba, iocbq_entry);
5839                 if (iotag == 0) {
5840                         kfree(iocbq_entry);
5841                         printk(KERN_ERR "%s: failed to allocate IOTAG. "
5842                                 "Unloading driver.\n", __func__);
5843                         goto out_free_iocbq;
5844                 }
5845                 iocbq_entry->sli4_lxritag = NO_XRI;
5846                 iocbq_entry->sli4_xritag = NO_XRI;
5847 
5848                 spin_lock_irq(&phba->hbalock);
5849                 list_add(&iocbq_entry->list, &phba->lpfc_iocb_list);
5850                 phba->total_iocbq_bufs++;
5851                 spin_unlock_irq(&phba->hbalock);
5852         }
5853 
5854         return 0;
5855 
5856 out_free_iocbq:
5857         lpfc_free_iocb_list(phba);
5858 
5859         return -ENOMEM;
5860 }
5861 
5862 /**
5863  * lpfc_free_sgl_list - Free a given sgl list.
5864  * @phba: pointer to lpfc hba data structure.
5865  * @sglq_list: pointer to the head of sgl list.
5866  *
5867  * This routine is invoked to free a give sgl list and memory.
5868  **/
5869 void
5870 lpfc_free_sgl_list(struct lpfc_hba *phba, struct list_head *sglq_list)
5871 {
5872         struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
5873 
5874         list_for_each_entry_safe(sglq_entry, sglq_next, sglq_list, list) {
5875                 list_del(&sglq_entry->list);
5876                 lpfc_mbuf_free(phba, sglq_entry->virt, sglq_entry->phys);
5877                 kfree(sglq_entry);
5878         }
5879 }
5880 
5881 /**
5882  * lpfc_free_els_sgl_list - Free els sgl list.
5883  * @phba: pointer to lpfc hba data structure.
5884  *
5885  * This routine is invoked to free the driver's els sgl list and memory.
5886  **/
5887 static void
5888 lpfc_free_els_sgl_list(struct lpfc_hba *phba)
5889 {
5890         LIST_HEAD(sglq_list);
5891         struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
5892 
5893         /* Retrieve all els sgls from driver list */
5894         spin_lock_irq(&phba->hbalock);
5895         spin_lock(&pring->ring_lock);
5896         list_splice_init(&phba->sli4_hba.lpfc_sgl_list, &sglq_list);
5897         spin_unlock(&pring->ring_lock);
5898         spin_unlock_irq(&phba->hbalock);
5899 
5900         /* Now free the sgl list */
5901         lpfc_free_sgl_list(phba, &sglq_list);
5902 }
5903 
5904 /**
5905  * lpfc_init_active_sgl_array - Allocate the buf to track active ELS XRIs.
5906  * @phba: pointer to lpfc hba data structure.
5907  *
5908  * This routine is invoked to allocate the driver's active sgl memory.
5909  * This array will hold the sglq_entry's for active IOs.
5910  **/
5911 static int
5912 lpfc_init_active_sgl_array(struct lpfc_hba *phba)
5913 {
5914         int size;
5915         size = sizeof(struct lpfc_sglq *);
5916         size *= phba->sli4_hba.max_cfg_param.max_xri;
5917 
5918         phba->sli4_hba.lpfc_sglq_active_list =
5919                 kzalloc(size, GFP_KERNEL);
5920         if (!phba->sli4_hba.lpfc_sglq_active_list)
5921                 return -ENOMEM;
5922         return 0;
5923 }
5924 
5925 /**
5926  * lpfc_free_active_sgl - Free the buf that tracks active ELS XRIs.
5927  * @phba: pointer to lpfc hba data structure.
5928  *
5929  * This routine is invoked to walk through the array of active sglq entries
5930  * and free all of the resources.
5931  * This is just a place holder for now.
5932  **/
5933 static void
5934 lpfc_free_active_sgl(struct lpfc_hba *phba)
5935 {
5936         kfree(phba->sli4_hba.lpfc_sglq_active_list);
5937 }
5938 
5939 /**
5940  * lpfc_init_sgl_list - Allocate and initialize sgl list.
5941  * @phba: pointer to lpfc hba data structure.
5942  *
5943  * This routine is invoked to allocate and initizlize the driver's sgl
5944  * list and set up the sgl xritag tag array accordingly.
5945  *
5946  **/
5947 static void
5948 lpfc_init_sgl_list(struct lpfc_hba *phba)
5949 {
5950         /* Initialize and populate the sglq list per host/VF. */
5951         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_sgl_list);
5952         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_els_sgl_list);
5953 
5954         /* els xri-sgl book keeping */
5955         phba->sli4_hba.els_xri_cnt = 0;
5956 
5957         /* scsi xri-buffer book keeping */
5958         phba->sli4_hba.scsi_xri_cnt = 0;
5959 }
5960 
5961 /**
5962  * lpfc_sli4_init_rpi_hdrs - Post the rpi header memory region to the port
5963  * @phba: pointer to lpfc hba data structure.
5964  *
5965  * This routine is invoked to post rpi header templates to the
5966  * port for those SLI4 ports that do not support extents.  This routine
5967  * posts a PAGE_SIZE memory region to the port to hold up to
5968  * PAGE_SIZE modulo 64 rpi context headers.  This is an initialization routine
5969  * and should be called only when interrupts are disabled.
5970  *
5971  * Return codes
5972  *      0 - successful
5973  *      -ERROR - otherwise.
5974  **/
5975 int
5976 lpfc_sli4_init_rpi_hdrs(struct lpfc_hba *phba)
5977 {
5978         int rc = 0;
5979         struct lpfc_rpi_hdr *rpi_hdr;
5980 
5981         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_hdr_list);
5982         if (!phba->sli4_hba.rpi_hdrs_in_use)
5983                 return rc;
5984         if (phba->sli4_hba.extents_in_use)
5985                 return -EIO;
5986 
5987         rpi_hdr = lpfc_sli4_create_rpi_hdr(phba);
5988         if (!rpi_hdr) {
5989                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
5990                                 "0391 Error during rpi post operation\n");
5991                 lpfc_sli4_remove_rpis(phba);
5992                 rc = -ENODEV;
5993         }
5994 
5995         return rc;
5996 }
5997 
5998 /**
5999  * lpfc_sli4_create_rpi_hdr - Allocate an rpi header memory region
6000  * @phba: pointer to lpfc hba data structure.
6001  *
6002  * This routine is invoked to allocate a single 4KB memory region to
6003  * support rpis and stores them in the phba.  This single region
6004  * provides support for up to 64 rpis.  The region is used globally
6005  * by the device.
6006  *
6007  * Returns:
6008  *   A valid rpi hdr on success.
6009  *   A NULL pointer on any failure.
6010  **/
6011 struct lpfc_rpi_hdr *
6012 lpfc_sli4_create_rpi_hdr(struct lpfc_hba *phba)
6013 {
6014         uint16_t rpi_limit, curr_rpi_range;
6015         struct lpfc_dmabuf *dmabuf;
6016         struct lpfc_rpi_hdr *rpi_hdr;
6017         uint32_t rpi_count;
6018 
6019         /*
6020          * If the SLI4 port supports extents, posting the rpi header isn't
6021          * required.  Set the expected maximum count and let the actual value
6022          * get set when extents are fully allocated.
6023          */
6024         if (!phba->sli4_hba.rpi_hdrs_in_use)
6025                 return NULL;
6026         if (phba->sli4_hba.extents_in_use)
6027                 return NULL;
6028 
6029         /* The limit on the logical index is just the max_rpi count. */
6030         rpi_limit = phba->sli4_hba.max_cfg_param.rpi_base +
6031         phba->sli4_hba.max_cfg_param.max_rpi - 1;
6032 
6033         spin_lock_irq(&phba->hbalock);
6034         /*
6035          * Establish the starting RPI in this header block.  The starting
6036          * rpi is normalized to a zero base because the physical rpi is
6037          * port based.
6038          */
6039         curr_rpi_range = phba->sli4_hba.next_rpi;
6040         spin_unlock_irq(&phba->hbalock);
6041 
6042         /*
6043          * The port has a limited number of rpis. The increment here
6044          * is LPFC_RPI_HDR_COUNT - 1 to account for the starting value
6045          * and to allow the full max_rpi range per port.
6046          */
6047         if ((curr_rpi_range + (LPFC_RPI_HDR_COUNT - 1)) > rpi_limit)
6048                 rpi_count = rpi_limit - curr_rpi_range;
6049         else
6050                 rpi_count = LPFC_RPI_HDR_COUNT;
6051 
6052         if (!rpi_count)
6053                 return NULL;
6054         /*
6055          * First allocate the protocol header region for the port.  The
6056          * port expects a 4KB DMA-mapped memory region that is 4K aligned.
6057          */
6058         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
6059         if (!dmabuf)
6060                 return NULL;
6061 
6062         dmabuf->virt = dma_zalloc_coherent(&phba->pcidev->dev,
6063                                            LPFC_HDR_TEMPLATE_SIZE,
6064                                            &dmabuf->phys, GFP_KERNEL);
6065         if (!dmabuf->virt) {
6066                 rpi_hdr = NULL;
6067                 goto err_free_dmabuf;
6068         }
6069 
6070         if (!IS_ALIGNED(dmabuf->phys, LPFC_HDR_TEMPLATE_SIZE)) {
6071                 rpi_hdr = NULL;
6072                 goto err_free_coherent;
6073         }
6074 
6075         /* Save the rpi header data for cleanup later. */
6076         rpi_hdr = kzalloc(sizeof(struct lpfc_rpi_hdr), GFP_KERNEL);
6077         if (!rpi_hdr)
6078                 goto err_free_coherent;
6079 
6080         rpi_hdr->dmabuf = dmabuf;
6081         rpi_hdr->len = LPFC_HDR_TEMPLATE_SIZE;
6082         rpi_hdr->page_count = 1;
6083         spin_lock_irq(&phba->hbalock);
6084 
6085         /* The rpi_hdr stores the logical index only. */
6086         rpi_hdr->start_rpi = curr_rpi_range;
6087         list_add_tail(&rpi_hdr->list, &phba->sli4_hba.lpfc_rpi_hdr_list);
6088 
6089         /*
6090          * The next_rpi stores the next logical module-64 rpi value used
6091          * to post physical rpis in subsequent rpi postings.
6092          */
6093         phba->sli4_hba.next_rpi += rpi_count;
6094         spin_unlock_irq(&phba->hbalock);
6095         return rpi_hdr;
6096 
6097  err_free_coherent:
6098         dma_free_coherent(&phba->pcidev->dev, LPFC_HDR_TEMPLATE_SIZE,
6099                           dmabuf->virt, dmabuf->phys);
6100  err_free_dmabuf:
6101         kfree(dmabuf);
6102         return NULL;
6103 }
6104 
6105 /**
6106  * lpfc_sli4_remove_rpi_hdrs - Remove all rpi header memory regions
6107  * @phba: pointer to lpfc hba data structure.
6108  *
6109  * This routine is invoked to remove all memory resources allocated
6110  * to support rpis for SLI4 ports not supporting extents. This routine
6111  * presumes the caller has released all rpis consumed by fabric or port
6112  * logins and is prepared to have the header pages removed.
6113  **/
6114 void
6115 lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba *phba)
6116 {
6117         struct lpfc_rpi_hdr *rpi_hdr, *next_rpi_hdr;
6118 
6119         if (!phba->sli4_hba.rpi_hdrs_in_use)
6120                 goto exit;
6121 
6122         list_for_each_entry_safe(rpi_hdr, next_rpi_hdr,
6123                                  &phba->sli4_hba.lpfc_rpi_hdr_list, list) {
6124                 list_del(&rpi_hdr->list);
6125                 dma_free_coherent(&phba->pcidev->dev, rpi_hdr->len,
6126                                   rpi_hdr->dmabuf->virt, rpi_hdr->dmabuf->phys);
6127                 kfree(rpi_hdr->dmabuf);
6128                 kfree(rpi_hdr);
6129         }
6130  exit:
6131         /* There are no rpis available to the port now. */
6132         phba->sli4_hba.next_rpi = 0;
6133 }
6134 
6135 /**
6136  * lpfc_hba_alloc - Allocate driver hba data structure for a device.
6137  * @pdev: pointer to pci device data structure.
6138  *
6139  * This routine is invoked to allocate the driver hba data structure for an
6140  * HBA device. If the allocation is successful, the phba reference to the
6141  * PCI device data structure is set.
6142  *
6143  * Return codes
6144  *      pointer to @phba - successful
6145  *      NULL - error
6146  **/
6147 static struct lpfc_hba *
6148 lpfc_hba_alloc(struct pci_dev *pdev)
6149 {
6150         struct lpfc_hba *phba;
6151 
6152         /* Allocate memory for HBA structure */
6153         phba = kzalloc(sizeof(struct lpfc_hba), GFP_KERNEL);
6154         if (!phba) {
6155                 dev_err(&pdev->dev, "failed to allocate hba struct\n");
6156                 return NULL;
6157         }
6158 
6159         /* Set reference to PCI device in HBA structure */
6160         phba->pcidev = pdev;
6161 
6162         /* Assign an unused board number */
6163         phba->brd_no = lpfc_get_instance();
6164         if (phba->brd_no < 0) {
6165                 kfree(phba);
6166                 return NULL;
6167         }
6168         phba->eratt_poll_interval = LPFC_ERATT_POLL_INTERVAL;
6169 
6170         spin_lock_init(&phba->ct_ev_lock);
6171         INIT_LIST_HEAD(&phba->ct_ev_waiters);
6172 
6173         return phba;
6174 }
6175 
6176 /**
6177  * lpfc_hba_free - Free driver hba data structure with a device.
6178  * @phba: pointer to lpfc hba data structure.
6179  *
6180  * This routine is invoked to free the driver hba data structure with an
6181  * HBA device.
6182  **/
6183 static void
6184 lpfc_hba_free(struct lpfc_hba *phba)
6185 {
6186         /* Release the driver assigned board number */
6187         idr_remove(&lpfc_hba_index, phba->brd_no);
6188 
6189         /* Free memory allocated with sli rings */
6190         kfree(phba->sli.ring);
6191         phba->sli.ring = NULL;
6192 
6193         kfree(phba);
6194         return;
6195 }
6196 
6197 /**
6198  * lpfc_create_shost - Create hba physical port with associated scsi host.
6199  * @phba: pointer to lpfc hba data structure.
6200  *
6201  * This routine is invoked to create HBA physical port and associate a SCSI
6202  * host with it.
6203  *
6204  * Return codes
6205  *      0 - successful
6206  *      other values - error
6207  **/
6208 static int
6209 lpfc_create_shost(struct lpfc_hba *phba)
6210 {
6211         struct lpfc_vport *vport;
6212         struct Scsi_Host  *shost;
6213 
6214         /* Initialize HBA FC structure */
6215         phba->fc_edtov = FF_DEF_EDTOV;
6216         phba->fc_ratov = FF_DEF_RATOV;
6217         phba->fc_altov = FF_DEF_ALTOV;
6218         phba->fc_arbtov = FF_DEF_ARBTOV;
6219 
6220         atomic_set(&phba->sdev_cnt, 0);
6221         vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev);
6222         if (!vport)
6223                 return -ENODEV;
6224 
6225         shost = lpfc_shost_from_vport(vport);
6226         phba->pport = vport;
6227         lpfc_debugfs_initialize(vport);
6228         /* Put reference to SCSI host to driver's device private data */
6229         pci_set_drvdata(phba->pcidev, shost);
6230 
6231         /*
6232          * At this point we are fully registered with PSA. In addition,
6233          * any initial discovery should be completed.
6234          */
6235         vport->load_flag |= FC_ALLOW_FDMI;
6236         if (phba->cfg_enable_SmartSAN ||
6237             (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) {
6238 
6239                 /* Setup appropriate attribute masks */
6240                 vport->fdmi_hba_mask = LPFC_FDMI2_HBA_ATTR;
6241                 if (phba->cfg_enable_SmartSAN)
6242                         vport->fdmi_port_mask = LPFC_FDMI2_SMART_ATTR;
6243                 else
6244                         vport->fdmi_port_mask = LPFC_FDMI2_PORT_ATTR;
6245         }
6246         return 0;
6247 }
6248 
6249 /**
6250  * lpfc_destroy_shost - Destroy hba physical port with associated scsi host.
6251  * @phba: pointer to lpfc hba data structure.
6252  *
6253  * This routine is invoked to destroy HBA physical port and the associated
6254  * SCSI host.
6255  **/
6256 static void
6257 lpfc_destroy_shost(struct lpfc_hba *phba)
6258 {
6259         struct lpfc_vport *vport = phba->pport;
6260 
6261         /* Destroy physical port that associated with the SCSI host */
6262         destroy_port(vport);
6263 
6264         return;
6265 }
6266 
6267 /**
6268  * lpfc_setup_bg - Setup Block guard structures and debug areas.
6269  * @phba: pointer to lpfc hba data structure.
6270  * @shost: the shost to be used to detect Block guard settings.
6271  *
6272  * This routine sets up the local Block guard protocol settings for @shost.
6273  * This routine also allocates memory for debugging bg buffers.
6274  **/
6275 static void
6276 lpfc_setup_bg(struct lpfc_hba *phba, struct Scsi_Host *shost)
6277 {
6278         uint32_t old_mask;
6279         uint32_t old_guard;
6280 
6281         int pagecnt = 10;
6282         if (lpfc_prot_mask && lpfc_prot_guard) {
6283                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6284                                 "1478 Registering BlockGuard with the "
6285                                 "SCSI layer\n");
6286 
6287                 old_mask = lpfc_prot_mask;
6288                 old_guard = lpfc_prot_guard;
6289 
6290                 /* Only allow supported values */
6291                 lpfc_prot_mask &= (SHOST_DIF_TYPE1_PROTECTION |
6292                         SHOST_DIX_TYPE0_PROTECTION |
6293                         SHOST_DIX_TYPE1_PROTECTION);
6294                 lpfc_prot_guard &= (SHOST_DIX_GUARD_IP | SHOST_DIX_GUARD_CRC);
6295 
6296                 /* DIF Type 1 protection for profiles AST1/C1 is end to end */
6297                 if (lpfc_prot_mask == SHOST_DIX_TYPE1_PROTECTION)
6298                         lpfc_prot_mask |= SHOST_DIF_TYPE1_PROTECTION;
6299 
6300                 if (lpfc_prot_mask && lpfc_prot_guard) {
6301                         if ((old_mask != lpfc_prot_mask) ||
6302                                 (old_guard != lpfc_prot_guard))
6303                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6304                                         "1475 Registering BlockGuard with the "
6305                                         "SCSI layer: mask %d  guard %d\n",
6306                                         lpfc_prot_mask, lpfc_prot_guard);
6307 
6308                         scsi_host_set_prot(shost, lpfc_prot_mask);
6309                         scsi_host_set_guard(shost, lpfc_prot_guard);
6310                 } else
6311                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6312                                 "1479 Not Registering BlockGuard with the SCSI "
6313                                 "layer, Bad protection parameters: %d %d\n",
6314                                 old_mask, old_guard);
6315         }
6316 
6317         if (!_dump_buf_data) {
6318                 while (pagecnt) {
6319                         spin_lock_init(&_dump_buf_lock);
6320                         _dump_buf_data =
6321                                 (char *) __get_free_pages(GFP_KERNEL, pagecnt);
6322                         if (_dump_buf_data) {
6323                                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
6324                                         "9043 BLKGRD: allocated %d pages for "
6325                                        "_dump_buf_data at 0x%p\n",
6326                                        (1 << pagecnt), _dump_buf_data);
6327                                 _dump_buf_data_order = pagecnt;
6328                                 memset(_dump_buf_data, 0,
6329                                        ((1 << PAGE_SHIFT) << pagecnt));
6330                                 break;
6331                         } else
6332                                 --pagecnt;
6333                 }
6334                 if (!_dump_buf_data_order)
6335                         lpfc_printf_log(phba, KERN_ERR, LOG_BG,
6336                                 "9044 BLKGRD: ERROR unable to allocate "
6337                                "memory for hexdump\n");
6338         } else
6339                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
6340                         "9045 BLKGRD: already allocated _dump_buf_data=0x%p"
6341                        "\n", _dump_buf_data);
6342         if (!_dump_buf_dif) {
6343                 while (pagecnt) {
6344                         _dump_buf_dif =
6345                                 (char *) __get_free_pages(GFP_KERNEL, pagecnt);
6346                         if (_dump_buf_dif) {
6347                                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
6348                                         "9046 BLKGRD: allocated %d pages for "
6349                                        "_dump_buf_dif at 0x%p\n",
6350                                        (1 << pagecnt), _dump_buf_dif);
6351                                 _dump_buf_dif_order = pagecnt;
6352                                 memset(_dump_buf_dif, 0,
6353                                        ((1 << PAGE_SHIFT) << pagecnt));
6354                                 break;
6355                         } else
6356                                 --pagecnt;
6357                 }
6358                 if (!_dump_buf_dif_order)
6359                         lpfc_printf_log(phba, KERN_ERR, LOG_BG,
6360                         "9047 BLKGRD: ERROR unable to allocate "
6361                                "memory for hexdump\n");
6362         } else
6363                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
6364                         "9048 BLKGRD: already allocated _dump_buf_dif=0x%p\n",
6365                        _dump_buf_dif);
6366 }
6367 
6368 /**
6369  * lpfc_post_init_setup - Perform necessary device post initialization setup.
6370  * @phba: pointer to lpfc hba data structure.
6371  *
6372  * This routine is invoked to perform all the necessary post initialization
6373  * setup for the device.
6374  **/
6375 static void
6376 lpfc_post_init_setup(struct lpfc_hba *phba)
6377 {
6378         struct Scsi_Host  *shost;
6379         struct lpfc_adapter_event_header adapter_event;
6380 
6381         /* Get the default values for Model Name and Description */
6382         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
6383 
6384         /*
6385          * hba setup may have changed the hba_queue_depth so we need to
6386          * adjust the value of can_queue.
6387          */
6388         shost = pci_get_drvdata(phba->pcidev);
6389         shost->can_queue = phba->cfg_hba_queue_depth - 10;
6390         if (phba->sli3_options & LPFC_SLI3_BG_ENABLED)
6391                 lpfc_setup_bg(phba, shost);
6392 
6393         lpfc_host_attrib_init(shost);
6394 
6395         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
6396                 spin_lock_irq(shost->host_lock);
6397                 lpfc_poll_start_timer(phba);
6398                 spin_unlock_irq(shost->host_lock);
6399         }
6400 
6401         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6402                         "0428 Perform SCSI scan\n");
6403         /* Send board arrival event to upper layer */
6404         adapter_event.event_type = FC_REG_ADAPTER_EVENT;
6405         adapter_event.subcategory = LPFC_EVENT_ARRIVAL;
6406         fc_host_post_vendor_event(shost, fc_get_event_number(),
6407                                   sizeof(adapter_event),
6408                                   (char *) &adapter_event,
6409                                   LPFC_NL_VENDOR_ID);
6410         return;
6411 }
6412 
6413 /**
6414  * lpfc_sli_pci_mem_setup - Setup SLI3 HBA PCI memory space.
6415  * @phba: pointer to lpfc hba data structure.
6416  *
6417  * This routine is invoked to set up the PCI device memory space for device
6418  * with SLI-3 interface spec.
6419  *
6420  * Return codes
6421  *      0 - successful
6422  *      other values - error
6423  **/
6424 static int
6425 lpfc_sli_pci_mem_setup(struct lpfc_hba *phba)
6426 {
6427         struct pci_dev *pdev;
6428         unsigned long bar0map_len, bar2map_len;
6429         int i, hbq_count;
6430         void *ptr;
6431         int error = -ENODEV;
6432 
6433         /* Obtain PCI device reference */
6434         if (!phba->pcidev)
6435                 return error;
6436         else
6437                 pdev = phba->pcidev;
6438 
6439         /* Set the device DMA mask size */
6440         if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0
6441          || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(64)) != 0) {
6442                 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0
6443                  || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(32)) != 0) {
6444                         return error;
6445                 }
6446         }
6447 
6448         /* Get the bus address of Bar0 and Bar2 and the number of bytes
6449          * required by each mapping.
6450          */
6451         phba->pci_bar0_map = pci_resource_start(pdev, 0);
6452         bar0map_len = pci_resource_len(pdev, 0);
6453 
6454         phba->pci_bar2_map = pci_resource_start(pdev, 2);
6455         bar2map_len = pci_resource_len(pdev, 2);
6456 
6457         /* Map HBA SLIM to a kernel virtual address. */
6458         phba->slim_memmap_p = ioremap(phba->pci_bar0_map, bar0map_len);
6459         if (!phba->slim_memmap_p) {
6460                 dev_printk(KERN_ERR, &pdev->dev,
6461                            "ioremap failed for SLIM memory.\n");
6462                 goto out;
6463         }
6464 
6465         /* Map HBA Control Registers to a kernel virtual address. */
6466         phba->ctrl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len);
6467         if (!phba->ctrl_regs_memmap_p) {
6468                 dev_printk(KERN_ERR, &pdev->dev,
6469                            "ioremap failed for HBA control registers.\n");
6470                 goto out_iounmap_slim;
6471         }
6472 
6473         /* Allocate memory for SLI-2 structures */
6474         phba->slim2p.virt = dma_zalloc_coherent(&pdev->dev, SLI2_SLIM_SIZE,
6475                                                 &phba->slim2p.phys, GFP_KERNEL);
6476         if (!phba->slim2p.virt)
6477                 goto out_iounmap;
6478 
6479         phba->mbox = phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, mbx);
6480         phba->mbox_ext = (phba->slim2p.virt +
6481                 offsetof(struct lpfc_sli2_slim, mbx_ext_words));
6482         phba->pcb = (phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, pcb));
6483         phba->IOCBs = (phba->slim2p.virt +
6484                        offsetof(struct lpfc_sli2_slim, IOCBs));
6485 
6486         phba->hbqslimp.virt = dma_alloc_coherent(&pdev->dev,
6487                                                  lpfc_sli_hbq_size(),
6488                                                  &phba->hbqslimp.phys,
6489                                                  GFP_KERNEL);
6490         if (!phba->hbqslimp.virt)
6491                 goto out_free_slim;
6492 
6493         hbq_count = lpfc_sli_hbq_count();
6494         ptr = phba->hbqslimp.virt;
6495         for (i = 0; i < hbq_count; ++i) {
6496                 phba->hbqs[i].hbq_virt = ptr;
6497                 INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
6498                 ptr += (lpfc_hbq_defs[i]->entry_count *
6499                         sizeof(struct lpfc_hbq_entry));
6500         }
6501         phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_els_hbq_alloc;
6502         phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_els_hbq_free;
6503 
6504         memset(phba->hbqslimp.virt, 0, lpfc_sli_hbq_size());
6505 
6506         INIT_LIST_HEAD(&phba->rb_pend_list);
6507 
6508         phba->MBslimaddr = phba->slim_memmap_p;
6509         phba->HAregaddr = phba->ctrl_regs_memmap_p + HA_REG_OFFSET;
6510         phba->CAregaddr = phba->ctrl_regs_memmap_p + CA_REG_OFFSET;
6511         phba->HSregaddr = phba->ctrl_regs_memmap_p + HS_REG_OFFSET;
6512         phba->HCregaddr = phba->ctrl_regs_memmap_p + HC_REG_OFFSET;
6513 
6514         return 0;
6515 
6516 out_free_slim:
6517         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
6518                           phba->slim2p.virt, phba->slim2p.phys);
6519 out_iounmap:
6520         iounmap(phba->ctrl_regs_memmap_p);
6521 out_iounmap_slim:
6522         iounmap(phba->slim_memmap_p);
6523 out:
6524         return error;
6525 }
6526 
6527 /**
6528  * lpfc_sli_pci_mem_unset - Unset SLI3 HBA PCI memory space.
6529  * @phba: pointer to lpfc hba data structure.
6530  *
6531  * This routine is invoked to unset the PCI device memory space for device
6532  * with SLI-3 interface spec.
6533  **/
6534 static void
6535 lpfc_sli_pci_mem_unset(struct lpfc_hba *phba)
6536 {
6537         struct pci_dev *pdev;
6538 
6539         /* Obtain PCI device reference */
6540         if (!phba->pcidev)
6541                 return;
6542         else
6543                 pdev = phba->pcidev;
6544 
6545         /* Free coherent DMA memory allocated */
6546         dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
6547                           phba->hbqslimp.virt, phba->hbqslimp.phys);
6548         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
6549                           phba->slim2p.virt, phba->slim2p.phys);
6550 
6551         /* I/O memory unmap */
6552         iounmap(phba->ctrl_regs_memmap_p);
6553         iounmap(phba->slim_memmap_p);
6554 
6555         return;
6556 }
6557 
6558 /**
6559  * lpfc_sli4_post_status_check - Wait for SLI4 POST done and check status
6560  * @phba: pointer to lpfc hba data structure.
6561  *
6562  * This routine is invoked to wait for SLI4 device Power On Self Test (POST)
6563  * done and check status.
6564  *
6565  * Return 0 if successful, otherwise -ENODEV.
6566  **/
6567 int
6568 lpfc_sli4_post_status_check(struct lpfc_hba *phba)
6569 {
6570         struct lpfc_register portsmphr_reg, uerrlo_reg, uerrhi_reg;
6571         struct lpfc_register reg_data;
6572         int i, port_error = 0;
6573         uint32_t if_type;
6574 
6575         memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
6576         memset(&reg_data, 0, sizeof(reg_data));
6577         if (!phba->sli4_hba.PSMPHRregaddr)
6578                 return -ENODEV;
6579 
6580         /* Wait up to 30 seconds for the SLI Port POST done and ready */
6581         for (i = 0; i < 3000; i++) {
6582                 if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
6583                         &portsmphr_reg.word0) ||
6584                         (bf_get(lpfc_port_smphr_perr, &portsmphr_reg))) {
6585                         /* Port has a fatal POST error, break out */
6586                         port_error = -ENODEV;
6587                         break;
6588                 }
6589                 if (LPFC_POST_STAGE_PORT_READY ==
6590                     bf_get(lpfc_port_smphr_port_status, &portsmphr_reg))
6591                         break;
6592                 msleep(10);
6593         }
6594 
6595         /*
6596          * If there was a port error during POST, then don't proceed with
6597          * other register reads as the data may not be valid.  Just exit.
6598          */
6599         if (port_error) {
6600                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6601                         "1408 Port Failed POST - portsmphr=0x%x, "
6602                         "perr=x%x, sfi=x%x, nip=x%x, ipc=x%x, scr1=x%x, "
6603                         "scr2=x%x, hscratch=x%x, pstatus=x%x\n",
6604                         portsmphr_reg.word0,
6605                         bf_get(lpfc_port_smphr_perr, &portsmphr_reg),
6606                         bf_get(lpfc_port_smphr_sfi, &portsmphr_reg),
6607                         bf_get(lpfc_port_smphr_nip, &portsmphr_reg),
6608                         bf_get(lpfc_port_smphr_ipc, &portsmphr_reg),
6609                         bf_get(lpfc_port_smphr_scr1, &portsmphr_reg),
6610                         bf_get(lpfc_port_smphr_scr2, &portsmphr_reg),
6611                         bf_get(lpfc_port_smphr_host_scratch, &portsmphr_reg),
6612                         bf_get(lpfc_port_smphr_port_status, &portsmphr_reg));
6613         } else {
6614                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6615                                 "2534 Device Info: SLIFamily=0x%x, "
6616                                 "SLIRev=0x%x, IFType=0x%x, SLIHint_1=0x%x, "
6617                                 "SLIHint_2=0x%x, FT=0x%x\n",
6618                                 bf_get(lpfc_sli_intf_sli_family,
6619                                        &phba->sli4_hba.sli_intf),
6620                                 bf_get(lpfc_sli_intf_slirev,
6621                                        &phba->sli4_hba.sli_intf),
6622                                 bf_get(lpfc_sli_intf_if_type,
6623                                        &phba->sli4_hba.sli_intf),
6624                                 bf_get(lpfc_sli_intf_sli_hint1,
6625                                        &phba->sli4_hba.sli_intf),
6626                                 bf_get(lpfc_sli_intf_sli_hint2,
6627                                        &phba->sli4_hba.sli_intf),
6628                                 bf_get(lpfc_sli_intf_func_type,
6629                                        &phba->sli4_hba.sli_intf));
6630                 /*
6631                  * Check for other Port errors during the initialization
6632                  * process.  Fail the load if the port did not come up
6633                  * correctly.
6634                  */
6635                 if_type = bf_get(lpfc_sli_intf_if_type,
6636                                  &phba->sli4_hba.sli_intf);
6637                 switch (if_type) {
6638                 case LPFC_SLI_INTF_IF_TYPE_0:
6639                         phba->sli4_hba.ue_mask_lo =
6640                               readl(phba->sli4_hba.u.if_type0.UEMASKLOregaddr);
6641                         phba->sli4_hba.ue_mask_hi =
6642                               readl(phba->sli4_hba.u.if_type0.UEMASKHIregaddr);
6643                         uerrlo_reg.word0 =
6644                               readl(phba->sli4_hba.u.if_type0.UERRLOregaddr);
6645                         uerrhi_reg.word0 =
6646                                 readl(phba->sli4_hba.u.if_type0.UERRHIregaddr);
6647                         if ((~phba->sli4_hba.ue_mask_lo & uerrlo_reg.word0) ||
6648                             (~phba->sli4_hba.ue_mask_hi & uerrhi_reg.word0)) {
6649                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6650                                                 "1422 Unrecoverable Error "
6651                                                 "Detected during POST "
6652                                                 "uerr_lo_reg=0x%x, "
6653                                                 "uerr_hi_reg=0x%x, "
6654                                                 "ue_mask_lo_reg=0x%x, "
6655                                                 "ue_mask_hi_reg=0x%x\n",
6656                                                 uerrlo_reg.word0,
6657                                                 uerrhi_reg.word0,
6658                                                 phba->sli4_hba.ue_mask_lo,
6659                                                 phba->sli4_hba.ue_mask_hi);
6660                                 port_error = -ENODEV;
6661                         }
6662                         break;
6663                 case LPFC_SLI_INTF_IF_TYPE_2:
6664                         /* Final checks.  The port status should be clean. */
6665                         if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
6666                                 &reg_data.word0) ||
6667                                 (bf_get(lpfc_sliport_status_err, &reg_data) &&
6668                                  !bf_get(lpfc_sliport_status_rn, &reg_data))) {
6669                                 phba->work_status[0] =
6670                                         readl(phba->sli4_hba.u.if_type2.
6671                                               ERR1regaddr);
6672                                 phba->work_status[1] =
6673                                         readl(phba->sli4_hba.u.if_type2.
6674                                               ERR2regaddr);
6675                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6676                                         "2888 Unrecoverable port error "
6677                                         "following POST: port status reg "
6678                                         "0x%x, port_smphr reg 0x%x, "
6679                                         "error 1=0x%x, error 2=0x%x\n",
6680                                         reg_data.word0,
6681                                         portsmphr_reg.word0,
6682                                         phba->work_status[0],
6683                                         phba->work_status[1]);
6684                                 port_error = -ENODEV;
6685                         }
6686                         break;
6687                 case LPFC_SLI_INTF_IF_TYPE_1:
6688                 default:
6689                         break;
6690                 }
6691         }
6692         return port_error;
6693 }
6694 
6695 /**
6696  * lpfc_sli4_bar0_register_memmap - Set up SLI4 BAR0 register memory map.
6697  * @phba: pointer to lpfc hba data structure.
6698  * @if_type:  The SLI4 interface type getting configured.
6699  *
6700  * This routine is invoked to set up SLI4 BAR0 PCI config space register
6701  * memory map.
6702  **/
6703 static void
6704 lpfc_sli4_bar0_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
6705 {
6706         switch (if_type) {
6707         case LPFC_SLI_INTF_IF_TYPE_0:
6708                 phba->sli4_hba.u.if_type0.UERRLOregaddr =
6709                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_LO;
6710                 phba->sli4_hba.u.if_type0.UERRHIregaddr =
6711                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_HI;
6712                 phba->sli4_hba.u.if_type0.UEMASKLOregaddr =
6713                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_LO;
6714                 phba->sli4_hba.u.if_type0.UEMASKHIregaddr =
6715                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_HI;
6716                 phba->sli4_hba.SLIINTFregaddr =
6717                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
6718                 break;
6719         case LPFC_SLI_INTF_IF_TYPE_2:
6720                 phba->sli4_hba.u.if_type2.ERR1regaddr =
6721                         phba->sli4_hba.conf_regs_memmap_p +
6722                                                 LPFC_CTL_PORT_ER1_OFFSET;
6723                 phba->sli4_hba.u.if_type2.ERR2regaddr =
6724                         phba->sli4_hba.conf_regs_memmap_p +
6725                                                 LPFC_CTL_PORT_ER2_OFFSET;
6726                 phba->sli4_hba.u.if_type2.CTRLregaddr =
6727                         phba->sli4_hba.conf_regs_memmap_p +
6728                                                 LPFC_CTL_PORT_CTL_OFFSET;
6729                 phba->sli4_hba.u.if_type2.STATUSregaddr =
6730                         phba->sli4_hba.conf_regs_memmap_p +
6731                                                 LPFC_CTL_PORT_STA_OFFSET;
6732                 phba->sli4_hba.SLIINTFregaddr =
6733                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
6734                 phba->sli4_hba.PSMPHRregaddr =
6735                         phba->sli4_hba.conf_regs_memmap_p +
6736                                                 LPFC_CTL_PORT_SEM_OFFSET;
6737                 phba->sli4_hba.RQDBregaddr =
6738                         phba->sli4_hba.conf_regs_memmap_p +
6739                                                 LPFC_ULP0_RQ_DOORBELL;
6740                 phba->sli4_hba.WQDBregaddr =
6741                         phba->sli4_hba.conf_regs_memmap_p +
6742                                                 LPFC_ULP0_WQ_DOORBELL;
6743                 phba->sli4_hba.EQCQDBregaddr =
6744                         phba->sli4_hba.conf_regs_memmap_p + LPFC_EQCQ_DOORBELL;
6745                 phba->sli4_hba.MQDBregaddr =
6746                         phba->sli4_hba.conf_regs_memmap_p + LPFC_MQ_DOORBELL;
6747                 phba->sli4_hba.BMBXregaddr =
6748                         phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
6749                 break;
6750         case LPFC_SLI_INTF_IF_TYPE_1:
6751         default:
6752                 dev_printk(KERN_ERR, &phba->pcidev->dev,
6753                            "FATAL - unsupported SLI4 interface type - %d\n",
6754                            if_type);
6755                 break;
6756         }
6757 }
6758 
6759 /**
6760  * lpfc_sli4_bar1_register_memmap - Set up SLI4 BAR1 register memory map.
6761  * @phba: pointer to lpfc hba data structure.
6762  *
6763  * This routine is invoked to set up SLI4 BAR1 control status register (CSR)
6764  * memory map.
6765  **/
6766 static void
6767 lpfc_sli4_bar1_register_memmap(struct lpfc_hba *phba)
6768 {
6769         phba->sli4_hba.PSMPHRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
6770                 LPFC_SLIPORT_IF0_SMPHR;
6771         phba->sli4_hba.ISRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
6772                 LPFC_HST_ISR0;
6773         phba->sli4_hba.IMRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
6774                 LPFC_HST_IMR0;
6775         phba->sli4_hba.ISCRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
6776                 LPFC_HST_ISCR0;
6777 }
6778 
6779 /**
6780  * lpfc_sli4_bar2_register_memmap - Set up SLI4 BAR2 register memory map.
6781  * @phba: pointer to lpfc hba data structure.
6782  * @vf: virtual function number
6783  *
6784  * This routine is invoked to set up SLI4 BAR2 doorbell register memory map
6785  * based on the given viftual function number, @vf.
6786  *
6787  * Return 0 if successful, otherwise -ENODEV.
6788  **/
6789 static int
6790 lpfc_sli4_bar2_register_memmap(struct lpfc_hba *phba, uint32_t vf)
6791 {
6792         if (vf > LPFC_VIR_FUNC_MAX)
6793                 return -ENODEV;
6794 
6795         phba->sli4_hba.RQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
6796                                 vf * LPFC_VFR_PAGE_SIZE +
6797                                         LPFC_ULP0_RQ_DOORBELL);
6798         phba->sli4_hba.WQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
6799                                 vf * LPFC_VFR_PAGE_SIZE +
6800                                         LPFC_ULP0_WQ_DOORBELL);
6801         phba->sli4_hba.EQCQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
6802                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_EQCQ_DOORBELL);
6803         phba->sli4_hba.MQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
6804                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_MQ_DOORBELL);
6805         phba->sli4_hba.BMBXregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
6806                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_BMBX);
6807         return 0;
6808 }
6809 
6810 /**
6811  * lpfc_create_bootstrap_mbox - Create the bootstrap mailbox
6812  * @phba: pointer to lpfc hba data structure.
6813  *
6814  * This routine is invoked to create the bootstrap mailbox
6815  * region consistent with the SLI-4 interface spec.  This
6816  * routine allocates all memory necessary to communicate
6817  * mailbox commands to the port and sets up all alignment
6818  * needs.  No locks are expected to be held when calling
6819  * this routine.
6820  *
6821  * Return codes
6822  *      0 - successful
6823  *      -ENOMEM - could not allocated memory.
6824  **/
6825 static int
6826 lpfc_create_bootstrap_mbox(struct lpfc_hba *phba)
6827 {
6828         uint32_t bmbx_size;
6829         struct lpfc_dmabuf *dmabuf;
6830         struct dma_address *dma_address;
6831         uint32_t pa_addr;
6832         uint64_t phys_addr;
6833 
6834         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
6835         if (!dmabuf)
6836                 return -ENOMEM;
6837 
6838         /*
6839          * The bootstrap mailbox region is comprised of 2 parts
6840          * plus an alignment restriction of 16 bytes.
6841          */
6842         bmbx_size = sizeof(struct lpfc_bmbx_create) + (LPFC_ALIGN_16_BYTE - 1);
6843         dmabuf->virt = dma_zalloc_coherent(&phba->pcidev->dev, bmbx_size,
6844                                            &dmabuf->phys, GFP_KERNEL);
6845         if (!dmabuf->virt) {
6846                 kfree(dmabuf);
6847                 return -ENOMEM;
6848         }
6849 
6850         /*
6851          * Initialize the bootstrap mailbox pointers now so that the register
6852          * operations are simple later.  The mailbox dma address is required
6853          * to be 16-byte aligned.  Also align the virtual memory as each
6854          * maibox is copied into the bmbx mailbox region before issuing the
6855          * command to the port.
6856          */
6857         phba->sli4_hba.bmbx.dmabuf = dmabuf;
6858         phba->sli4_hba.bmbx.bmbx_size = bmbx_size;
6859 
6860         phba->sli4_hba.bmbx.avirt = PTR_ALIGN(dmabuf->virt,
6861                                               LPFC_ALIGN_16_BYTE);
6862         phba->sli4_hba.bmbx.aphys = ALIGN(dmabuf->phys,
6863                                               LPFC_ALIGN_16_BYTE);
6864 
6865         /*
6866          * Set the high and low physical addresses now.  The SLI4 alignment
6867          * requirement is 16 bytes and the mailbox is posted to the port
6868          * as two 30-bit addresses.  The other data is a bit marking whether
6869          * the 30-bit address is the high or low address.
6870          * Upcast bmbx aphys to 64bits so shift instruction compiles
6871          * clean on 32 bit machines.
6872          */
6873         dma_address = &phba->sli4_hba.bmbx.dma_address;
6874         phys_addr = (uint64_t)phba->sli4_hba.bmbx.aphys;
6875         pa_addr = (uint32_t) ((phys_addr >> 34) & 0x3fffffff);
6876         dma_address->addr_hi = (uint32_t) ((pa_addr << 2) |
6877                                            LPFC_BMBX_BIT1_ADDR_HI);
6878 
6879         pa_addr = (uint32_t) ((phba->sli4_hba.bmbx.aphys >> 4) & 0x3fffffff);
6880         dma_address->addr_lo = (uint32_t) ((pa_addr << 2) |
6881                                            LPFC_BMBX_BIT1_ADDR_LO);
6882         return 0;
6883 }
6884 
6885 /**
6886  * lpfc_destroy_bootstrap_mbox - Destroy all bootstrap mailbox resources
6887  * @phba: pointer to lpfc hba data structure.
6888  *
6889  * This routine is invoked to teardown the bootstrap mailbox
6890  * region and release all host resources. This routine requires
6891  * the caller to ensure all mailbox commands recovered, no
6892  * additional mailbox comands are sent, and interrupts are disabled
6893  * before calling this routine.
6894  *
6895  **/
6896 static void
6897 lpfc_destroy_bootstrap_mbox(struct lpfc_hba *phba)
6898 {
6899         dma_free_coherent(&phba->pcidev->dev,
6900                           phba->sli4_hba.bmbx.bmbx_size,
6901                           phba->sli4_hba.bmbx.dmabuf->virt,
6902                           phba->sli4_hba.bmbx.dmabuf->phys);
6903 
6904         kfree(phba->sli4_hba.bmbx.dmabuf);
6905         memset(&phba->sli4_hba.bmbx, 0, sizeof(struct lpfc_bmbx));
6906 }
6907 
6908 /**
6909  * lpfc_sli4_read_config - Get the config parameters.
6910  * @phba: pointer to lpfc hba data structure.
6911  *
6912  * This routine is invoked to read the configuration parameters from the HBA.
6913  * The configuration parameters are used to set the base and maximum values
6914  * for RPI's XRI's VPI's VFI's and FCFIs. These values also affect the resource
6915  * allocation for the port.
6916  *
6917  * Return codes
6918  *      0 - successful
6919  *      -ENOMEM - No available memory
6920  *      -EIO - The mailbox failed to complete successfully.
6921  **/
6922 int
6923 lpfc_sli4_read_config(struct lpfc_hba *phba)
6924 {
6925         LPFC_MBOXQ_t *pmb;
6926         struct lpfc_mbx_read_config *rd_config;
6927         union  lpfc_sli4_cfg_shdr *shdr;
6928         uint32_t shdr_status, shdr_add_status;
6929         struct lpfc_mbx_get_func_cfg *get_func_cfg;
6930         struct lpfc_rsrc_desc_fcfcoe *desc;
6931         char *pdesc_0;
6932         int length, i, rc = 0, rc2;
6933 
6934         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6935         if (!pmb) {
6936                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6937                                 "2011 Unable to allocate memory for issuing "
6938                                 "SLI_CONFIG_SPECIAL mailbox command\n");
6939                 return -ENOMEM;
6940         }
6941 
6942         lpfc_read_config(phba, pmb);
6943 
6944         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
6945         if (rc != MBX_SUCCESS) {
6946                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6947                         "2012 Mailbox failed , mbxCmd x%x "
6948                         "READ_CONFIG, mbxStatus x%x\n",
6949                         bf_get(lpfc_mqe_command, &pmb->u.mqe),
6950                         bf_get(lpfc_mqe_status, &pmb->u.mqe));
6951                 rc = -EIO;
6952         } else {
6953                 rd_config = &pmb->u.mqe.un.rd_config;
6954                 if (bf_get(lpfc_mbx_rd_conf_lnk_ldv, rd_config)) {
6955                         phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_VAL;
6956                         phba->sli4_hba.lnk_info.lnk_tp =
6957                                 bf_get(lpfc_mbx_rd_conf_lnk_type, rd_config);
6958                         phba->sli4_hba.lnk_info.lnk_no =
6959                                 bf_get(lpfc_mbx_rd_conf_lnk_numb, rd_config);
6960                         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
6961                                         "3081 lnk_type:%d, lnk_numb:%d\n",
6962                                         phba->sli4_hba.lnk_info.lnk_tp,
6963                                         phba->sli4_hba.lnk_info.lnk_no);
6964                 } else
6965                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
6966                                         "3082 Mailbox (x%x) returned ldv:x0\n",
6967                                         bf_get(lpfc_mqe_command, &pmb->u.mqe));
6968                 phba->sli4_hba.extents_in_use =
6969                         bf_get(lpfc_mbx_rd_conf_extnts_inuse, rd_config);
6970                 phba->sli4_hba.max_cfg_param.max_xri =
6971                         bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);
6972                 phba->sli4_hba.max_cfg_param.xri_base =
6973                         bf_get(lpfc_mbx_rd_conf_xri_base, rd_config);
6974                 phba->sli4_hba.max_cfg_param.max_vpi =
6975                         bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config);
6976                 phba->sli4_hba.max_cfg_param.vpi_base =
6977                         bf_get(lpfc_mbx_rd_conf_vpi_base, rd_config);
6978                 phba->sli4_hba.max_cfg_param.max_rpi =
6979                         bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config);
6980                 phba->sli4_hba.max_cfg_param.rpi_base =
6981                         bf_get(lpfc_mbx_rd_conf_rpi_base, rd_config);
6982                 phba->sli4_hba.max_cfg_param.max_vfi =
6983                         bf_get(lpfc_mbx_rd_conf_vfi_count, rd_config);
6984                 phba->sli4_hba.max_cfg_param.vfi_base =
6985                         bf_get(lpfc_mbx_rd_conf_vfi_base, rd_config);
6986                 phba->sli4_hba.max_cfg_param.max_fcfi =
6987                         bf_get(lpfc_mbx_rd_conf_fcfi_count, rd_config);
6988                 phba->sli4_hba.max_cfg_param.max_eq =
6989                         bf_get(lpfc_mbx_rd_conf_eq_count, rd_config);
6990                 phba->sli4_hba.max_cfg_param.max_rq =
6991                         bf_get(lpfc_mbx_rd_conf_rq_count, rd_config);
6992                 phba->sli4_hba.max_cfg_param.max_wq =
6993                         bf_get(lpfc_mbx_rd_conf_wq_count, rd_config);
6994                 phba->sli4_hba.max_cfg_param.max_cq =
6995                         bf_get(lpfc_mbx_rd_conf_cq_count, rd_config);
6996                 phba->lmt = bf_get(lpfc_mbx_rd_conf_lmt, rd_config);
6997                 phba->sli4_hba.next_xri = phba->sli4_hba.max_cfg_param.xri_base;
6998                 phba->vpi_base = phba->sli4_hba.max_cfg_param.vpi_base;
6999                 phba->vfi_base = phba->sli4_hba.max_cfg_param.vfi_base;
7000                 phba->max_vpi = (phba->sli4_hba.max_cfg_param.max_vpi > 0) ?
7001                                 (phba->sli4_hba.max_cfg_param.max_vpi - 1) : 0;
7002                 phba->max_vports = phba->max_vpi;
7003                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
7004                                 "2003 cfg params Extents? %d "
7005                                 "XRI(B:%d M:%d), "
7006                                 "VPI(B:%d M:%d) "
7007                                 "VFI(B:%d M:%d) "
7008                                 "RPI(B:%d M:%d) "
7009                                 "FCFI(Count:%d)\n",
7010                                 phba->sli4_hba.extents_in_use,
7011                                 phba->sli4_hba.max_cfg_param.xri_base,
7012                                 phba->sli4_hba.max_cfg_param.max_xri,
7013                                 phba->sli4_hba.max_cfg_param.vpi_base,
7014                                 phba->sli4_hba.max_cfg_param.max_vpi,
7015                                 phba->sli4_hba.max_cfg_param.vfi_base,
7016                                 phba->sli4_hba.max_cfg_param.max_vfi,
7017                                 phba->sli4_hba.max_cfg_param.rpi_base,
7018                                 phba->sli4_hba.max_cfg_param.max_rpi,
7019                                 phba->sli4_hba.max_cfg_param.max_fcfi);
7020         }
7021 
7022         if (rc)
7023                 goto read_cfg_out;
7024 
7025         /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
7026         length = phba->sli4_hba.max_cfg_param.max_xri -
7027                         lpfc_sli4_get_els_iocb_cnt(phba);
7028         if (phba->cfg_hba_queue_depth > length) {
7029                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7030                                 "3361 HBA queue depth changed from %d to %d\n",
7031                                 phba->cfg_hba_queue_depth, length);
7032                 phba->cfg_hba_queue_depth = length;
7033         }
7034 
7035         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
7036             LPFC_SLI_INTF_IF_TYPE_2)
7037                 goto read_cfg_out;
7038 
7039         /* get the pf# and vf# for SLI4 if_type 2 port */
7040         length = (sizeof(struct lpfc_mbx_get_func_cfg) -
7041                   sizeof(struct lpfc_sli4_cfg_mhdr));
7042         lpfc_sli4_config(phba, pmb, LPFC_MBOX_SUBSYSTEM_COMMON,
7043                          LPFC_MBOX_OPCODE_GET_FUNCTION_CONFIG,
7044                          length, LPFC_SLI4_MBX_EMBED);
7045 
7046         rc2 = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
7047         shdr = (union lpfc_sli4_cfg_shdr *)
7048                                 &pmb->u.mqe.un.sli4_config.header.cfg_shdr;
7049         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
7050         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
7051         if (rc2 || shdr_status || shdr_add_status) {
7052                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
7053                                 "3026 Mailbox failed , mbxCmd x%x "
7054                                 "GET_FUNCTION_CONFIG, mbxStatus x%x\n",
7055                                 bf_get(lpfc_mqe_command, &pmb->u.mqe),
7056                                 bf_get(lpfc_mqe_status, &pmb->u.mqe));
7057                 goto read_cfg_out;
7058         }
7059 
7060         /* search for fc_fcoe resrouce descriptor */
7061         get_func_cfg = &pmb->u.mqe.un.get_func_cfg;
7062 
7063         pdesc_0 = (char *)&get_func_cfg->func_cfg.desc[0];
7064         desc = (struct lpfc_rsrc_desc_fcfcoe *)pdesc_0;
7065         length = bf_get(lpfc_rsrc_desc_fcfcoe_length, desc);
7066         if (length == LPFC_RSRC_DESC_TYPE_FCFCOE_V0_RSVD)
7067                 length = LPFC_RSRC_DESC_TYPE_FCFCOE_V0_LENGTH;
7068         else if (length != LPFC_RSRC_DESC_TYPE_FCFCOE_V1_LENGTH)
7069                 goto read_cfg_out;
7070 
7071         for (i = 0; i < LPFC_RSRC_DESC_MAX_NUM; i++) {
7072                 desc = (struct lpfc_rsrc_desc_fcfcoe *)(pdesc_0 + length * i);
7073                 if (LPFC_RSRC_DESC_TYPE_FCFCOE ==
7074                     bf_get(lpfc_rsrc_desc_fcfcoe_type, desc)) {
7075                         phba->sli4_hba.iov.pf_number =
7076                                 bf_get(lpfc_rsrc_desc_fcfcoe_pfnum, desc);
7077                         phba->sli4_hba.iov.vf_number =
7078                                 bf_get(lpfc_rsrc_desc_fcfcoe_vfnum, desc);
7079                         break;
7080                 }
7081         }
7082 
7083         if (i < LPFC_RSRC_DESC_MAX_NUM)
7084                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
7085                                 "3027 GET_FUNCTION_CONFIG: pf_number:%d, "
7086                                 "vf_number:%d\n", phba->sli4_hba.iov.pf_number,
7087                                 phba->sli4_hba.iov.vf_number);
7088         else
7089                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
7090                                 "3028 GET_FUNCTION_CONFIG: failed to find "
7091                                 "Resrouce Descriptor:x%x\n",
7092                                 LPFC_RSRC_DESC_TYPE_FCFCOE);
7093 
7094 read_cfg_out:
7095         mempool_free(pmb, phba->mbox_mem_pool);
7096         return rc;
7097 }
7098 
7099 /**
7100  * lpfc_setup_endian_order - Write endian order to an SLI4 if_type 0 port.
7101  * @phba: pointer to lpfc hba data structure.
7102  *
7103  * This routine is invoked to setup the port-side endian order when
7104  * the port if_type is 0.  This routine has no function for other
7105  * if_types.
7106  *
7107  * Return codes
7108  *      0 - successful
7109  *      -ENOMEM - No available memory
7110  *      -EIO - The mailbox failed to complete successfully.
7111  **/
7112 static int
7113 lpfc_setup_endian_order(struct lpfc_hba *phba)
7114 {
7115         LPFC_MBOXQ_t *mboxq;
7116         uint32_t if_type, rc = 0;
7117         uint32_t endian_mb_data[2] = {HOST_ENDIAN_LOW_WORD0,
7118                                       HOST_ENDIAN_HIGH_WORD1};
7119 
7120         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
7121         switch (if_type) {
7122         case LPFC_SLI_INTF_IF_TYPE_0:
7123                 mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
7124                                                        GFP_KERNEL);
7125                 if (!mboxq) {
7126                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7127                                         "0492 Unable to allocate memory for "
7128                                         "issuing SLI_CONFIG_SPECIAL mailbox "
7129                                         "command\n");
7130                         return -ENOMEM;
7131                 }
7132 
7133                 /*
7134                  * The SLI4_CONFIG_SPECIAL mailbox command requires the first
7135                  * two words to contain special data values and no other data.
7136                  */
7137                 memset(mboxq, 0, sizeof(LPFC_MBOXQ_t));
7138                 memcpy(&mboxq->u.mqe, &endian_mb_data, sizeof(endian_mb_data));
7139                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
7140                 if (rc != MBX_SUCCESS) {
7141                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7142                                         "0493 SLI_CONFIG_SPECIAL mailbox "
7143                                         "failed with status x%x\n",
7144                                         rc);
7145                         rc = -EIO;
7146                 }
7147                 mempool_free(mboxq, phba->mbox_mem_pool);
7148                 break;
7149         case LPFC_SLI_INTF_IF_TYPE_2:
7150         case LPFC_SLI_INTF_IF_TYPE_1:
7151         default:
7152                 break;
7153         }
7154         return rc;
7155 }
7156 
7157 /**
7158  * lpfc_sli4_queue_verify - Verify and update EQ and CQ counts
7159  * @phba: pointer to lpfc hba data structure.
7160  *
7161  * This routine is invoked to check the user settable queue counts for EQs and
7162  * CQs. after this routine is called the counts will be set to valid values that
7163  * adhere to the constraints of the system's interrupt vectors and the port's
7164  * queue resources.
7165  *
7166  * Return codes
7167  *      0 - successful
7168  *      -ENOMEM - No available memory
7169  **/
7170 static int
7171 lpfc_sli4_queue_verify(struct lpfc_hba *phba)
7172 {
7173         int cfg_fcp_io_channel;
7174         uint32_t cpu;
7175         uint32_t i = 0;
7176         int fof_vectors = phba->cfg_fof ? 1 : 0;
7177 
7178         /*
7179          * Sanity check for configured queue parameters against the run-time
7180          * device parameters
7181          */
7182 
7183         /* Sanity check on HBA EQ parameters */
7184         cfg_fcp_io_channel = phba->cfg_fcp_io_channel;
7185 
7186         /* It doesn't make sense to have more io channels then online CPUs */
7187         for_each_present_cpu(cpu) {
7188                 if (cpu_online(cpu))
7189                         i++;
7190         }
7191         phba->sli4_hba.num_online_cpu = i;
7192         phba->sli4_hba.num_present_cpu = lpfc_present_cpu;
7193         phba->sli4_hba.curr_disp_cpu = 0;
7194 
7195         if (i < cfg_fcp_io_channel) {
7196                 lpfc_printf_log(phba,
7197                                 KERN_ERR, LOG_INIT,
7198                                 "3188 Reducing IO channels to match number of "
7199                                 "online CPUs: from %d to %d\n",
7200                                 cfg_fcp_io_channel, i);
7201                 cfg_fcp_io_channel = i;
7202         }
7203 
7204         if (cfg_fcp_io_channel + fof_vectors >
7205             phba->sli4_hba.max_cfg_param.max_eq) {
7206                 if (phba->sli4_hba.max_cfg_param.max_eq <
7207                     LPFC_FCP_IO_CHAN_MIN) {
7208                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7209                                         "2574 Not enough EQs (%d) from the "
7210                                         "pci function for supporting FCP "
7211                                         "EQs (%d)\n",
7212                                         phba->sli4_hba.max_cfg_param.max_eq,
7213                                         phba->cfg_fcp_io_channel);
7214                         goto out_error;
7215                 }
7216                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7217                                 "2575 Reducing IO channels to match number of "
7218                                 "available EQs: from %d to %d\n",
7219                                 cfg_fcp_io_channel,
7220                                 phba->sli4_hba.max_cfg_param.max_eq);
7221                 cfg_fcp_io_channel = phba->sli4_hba.max_cfg_param.max_eq -
7222                         fof_vectors;
7223         }
7224 
7225         /* The actual number of FCP event queues adopted */
7226         phba->cfg_fcp_io_channel = cfg_fcp_io_channel;
7227 
7228         /* Get EQ depth from module parameter, fake the default for now */
7229         phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;
7230         phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
7231 
7232         /* Get CQ depth from module parameter, fake the default for now */
7233         phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
7234         phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
7235 
7236         return 0;
7237 out_error:
7238         return -ENOMEM;
7239 }
7240 
7241 /**
7242  * lpfc_sli4_queue_create - Create all the SLI4 queues
7243  * @phba: pointer to lpfc hba data structure.
7244  *
7245  * This routine is invoked to allocate all the SLI4 queues for the FCoE HBA
7246  * operation. For each SLI4 queue type, the parameters such as queue entry
7247  * count (queue depth) shall be taken from the module parameter. For now,
7248  * we just use some constant number as place holder.
7249  *
7250  * Return codes
7251  *      0 - successful
7252  *      -ENOMEM - No availble memory
7253  *      -EIO - The mailbox failed to complete successfully.
7254  **/
7255 int
7256 lpfc_sli4_queue_create(struct lpfc_hba *phba)
7257 {
7258         struct lpfc_queue *qdesc;
7259         int idx;
7260 
7261         /*
7262          * Create HBA Record arrays.
7263          */
7264         if (!phba->cfg_fcp_io_channel)
7265                 return -ERANGE;
7266 
7267         phba->sli4_hba.mq_esize = LPFC_MQE_SIZE;
7268         phba->sli4_hba.mq_ecount = LPFC_MQE_DEF_COUNT;
7269         phba->sli4_hba.wq_esize = LPFC_WQE_SIZE;
7270         phba->sli4_hba.wq_ecount = LPFC_WQE_DEF_COUNT;
7271         phba->sli4_hba.rq_esize = LPFC_RQE_SIZE;
7272         phba->sli4_hba.rq_ecount = LPFC_RQE_DEF_COUNT;
7273 
7274         phba->sli4_hba.hba_eq =  kzalloc((sizeof(struct lpfc_queue *) *
7275                                 phba->cfg_fcp_io_channel), GFP_KERNEL);
7276         if (!phba->sli4_hba.hba_eq) {
7277                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7278                         "2576 Failed allocate memory for "
7279                         "fast-path EQ record array\n");
7280                 goto out_error;
7281         }
7282 
7283         phba->sli4_hba.fcp_cq = kzalloc((sizeof(struct lpfc_queue *) *
7284                                 phba->cfg_fcp_io_channel), GFP_KERNEL);
7285         if (!phba->sli4_hba.fcp_cq) {
7286                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7287                                 "2577 Failed allocate memory for fast-path "
7288                                 "CQ record array\n");
7289                 goto out_error;
7290         }
7291 
7292         phba->sli4_hba.fcp_wq = kzalloc((sizeof(struct lpfc_queue *) *
7293                                 phba->cfg_fcp_io_channel), GFP_KERNEL);
7294         if (!phba->sli4_hba.fcp_wq) {
7295                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7296                                 "2578 Failed allocate memory for fast-path "
7297                                 "WQ record array\n");
7298                 goto out_error;
7299         }
7300 
7301         /*
7302          * Since the first EQ can have multiple CQs associated with it,
7303          * this array is used to quickly see if we have a FCP fast-path
7304          * CQ match.
7305          */
7306         phba->sli4_hba.fcp_cq_map = kzalloc((sizeof(uint16_t) *
7307                                          phba->cfg_fcp_io_channel), GFP_KERNEL);
7308         if (!phba->sli4_hba.fcp_cq_map) {
7309                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7310                                 "2545 Failed allocate memory for fast-path "
7311                                 "CQ map\n");
7312                 goto out_error;
7313         }
7314 
7315         /*
7316          * Create HBA Event Queues (EQs).  The cfg_fcp_io_channel specifies
7317          * how many EQs to create.
7318          */
7319         for (idx = 0; idx < phba->cfg_fcp_io_channel; idx++) {
7320 
7321                 /* Create EQs */
7322                 qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.eq_esize,
7323                                               phba->sli4_hba.eq_ecount);
7324                 if (!qdesc) {
7325                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7326                                         "0497 Failed allocate EQ (%d)\n", idx);
7327                         goto out_error;
7328                 }
7329                 phba->sli4_hba.hba_eq[idx] = qdesc;
7330 
7331                 /* Create Fast Path FCP CQs */
7332                 qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize,
7333                                               phba->sli4_hba.cq_ecount);
7334                 if (!qdesc) {
7335                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7336                                         "0499 Failed allocate fast-path FCP "
7337                                         "CQ (%d)\n", idx);
7338                         goto out_error;
7339                 }
7340                 phba->sli4_hba.fcp_cq[idx] = qdesc;
7341 
7342                 /* Create Fast Path FCP WQs */
7343                 if (phba->fcp_embed_io) {
7344                         qdesc = lpfc_sli4_queue_alloc(phba,
7345                                                       LPFC_WQE128_SIZE,
7346                                                       LPFC_WQE128_DEF_COUNT);
7347                 } else {
7348                         qdesc = lpfc_sli4_queue_alloc(phba,
7349                                                       phba->sli4_hba.wq_esize,
7350                                                       phba->sli4_hba.wq_ecount);
7351                 }
7352                 if (!qdesc) {
7353                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7354                                         "0503 Failed allocate fast-path FCP "
7355                                         "WQ (%d)\n", idx);
7356                         goto out_error;
7357                 }
7358                 phba->sli4_hba.fcp_wq[idx] = qdesc;
7359         }
7360 
7361 
7362         /*
7363          * Create Slow Path Completion Queues (CQs)
7364          */
7365 
7366         /* Create slow-path Mailbox Command Complete Queue */
7367         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize,
7368                                       phba->sli4_hba.cq_ecount);
7369         if (!qdesc) {
7370                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7371                                 "0500 Failed allocate slow-path mailbox CQ\n");
7372                 goto out_error;
7373         }
7374         phba->sli4_hba.mbx_cq = qdesc;
7375 
7376         /* Create slow-path ELS Complete Queue */
7377         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize,
7378                                       phba->sli4_hba.cq_ecount);
7379         if (!qdesc) {
7380                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7381                                 "0501 Failed allocate slow-path ELS CQ\n");
7382                 goto out_error;
7383         }
7384         phba->sli4_hba.els_cq = qdesc;
7385 
7386 
7387         /*
7388          * Create Slow Path Work Queues (WQs)
7389          */
7390 
7391         /* Create Mailbox Command Queue */
7392 
7393         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.mq_esize,
7394                                       phba->sli4_hba.mq_ecount);
7395         if (!qdesc) {
7396                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7397                                 "0505 Failed allocate slow-path MQ\n");
7398                 goto out_error;
7399         }
7400         phba->sli4_hba.mbx_wq = qdesc;
7401 
7402         /*
7403          * Create ELS Work Queues
7404          */
7405 
7406         /* Create slow-path ELS Work Queue */
7407         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.wq_esize,
7408                                       phba->sli4_hba.wq_ecount);
7409         if (!qdesc) {
7410                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7411                                 "0504 Failed allocate slow-path ELS WQ\n");
7412                 goto out_error;
7413         }
7414         phba->sli4_hba.els_wq = qdesc;
7415