1 /*******************************************************************
2  * This file is part of the Emulex Linux Device Driver for         *
3  * Fibre Channel Host Bus Adapters.                                *
4  * Copyright (C) 2004-2012 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 
37 #include <scsi/scsi.h>
38 #include <scsi/scsi_device.h>
39 #include <scsi/scsi_host.h>
40 #include <scsi/scsi_transport_fc.h>
41 
42 #include "lpfc_hw4.h"
43 #include "lpfc_hw.h"
44 #include "lpfc_sli.h"
45 #include "lpfc_sli4.h"
46 #include "lpfc_nl.h"
47 #include "lpfc_disc.h"
48 #include "lpfc_scsi.h"
49 #include "lpfc.h"
50 #include "lpfc_logmsg.h"
51 #include "lpfc_crtn.h"
52 #include "lpfc_vport.h"
53 #include "lpfc_version.h"
54 
55 char *_dump_buf_data;
56 unsigned long _dump_buf_data_order;
57 char *_dump_buf_dif;
58 unsigned long _dump_buf_dif_order;
59 spinlock_t _dump_buf_lock;
60 
61 static void lpfc_get_hba_model_desc(struct lpfc_hba *, uint8_t *, uint8_t *);
62 static int lpfc_post_rcv_buf(struct lpfc_hba *);
63 static int lpfc_sli4_queue_verify(struct lpfc_hba *);
64 static int lpfc_create_bootstrap_mbox(struct lpfc_hba *);
65 static int lpfc_setup_endian_order(struct lpfc_hba *);
66 static void lpfc_destroy_bootstrap_mbox(struct lpfc_hba *);
67 static void lpfc_free_sgl_list(struct lpfc_hba *);
68 static int lpfc_init_sgl_list(struct lpfc_hba *);
69 static int lpfc_init_active_sgl_array(struct lpfc_hba *);
70 static void lpfc_free_active_sgl(struct lpfc_hba *);
71 static int lpfc_hba_down_post_s3(struct lpfc_hba *phba);
72 static int lpfc_hba_down_post_s4(struct lpfc_hba *phba);
73 static int lpfc_sli4_cq_event_pool_create(struct lpfc_hba *);
74 static void lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *);
75 static void lpfc_sli4_cq_event_release_all(struct lpfc_hba *);
76 
77 static struct scsi_transport_template *lpfc_transport_template = NULL;
78 static struct scsi_transport_template *lpfc_vport_transport_template = NULL;
79 static DEFINE_IDR(lpfc_hba_index);
80 
81 /**
82  * lpfc_config_port_prep - Perform lpfc initialization prior to config port
83  * @phba: pointer to lpfc hba data structure.
84  *
85  * This routine will do LPFC initialization prior to issuing the CONFIG_PORT
86  * mailbox command. It retrieves the revision information from the HBA and
87  * collects the Vital Product Data (VPD) about the HBA for preparing the
88  * configuration of the HBA.
89  *
90  * Return codes:
91  *   0 - success.
92  *   -ERESTART - requests the SLI layer to reset the HBA and try again.
93  *   Any other value - indicates an error.
94  **/
95 int
lpfc_config_port_prep(struct lpfc_hba * phba)96 lpfc_config_port_prep(struct lpfc_hba *phba)
97 {
98 	lpfc_vpd_t *vp = &phba->vpd;
99 	int i = 0, rc;
100 	LPFC_MBOXQ_t *pmb;
101 	MAILBOX_t *mb;
102 	char *lpfc_vpd_data = NULL;
103 	uint16_t offset = 0;
104 	static char licensed[56] =
105 		    "key unlock for use with gnu public licensed code only\0";
106 	static int init_key = 1;
107 
108 	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
109 	if (!pmb) {
110 		phba->link_state = LPFC_HBA_ERROR;
111 		return -ENOMEM;
112 	}
113 
114 	mb = &pmb->u.mb;
115 	phba->link_state = LPFC_INIT_MBX_CMDS;
116 
117 	if (lpfc_is_LC_HBA(phba->pcidev->device)) {
118 		if (init_key) {
119 			uint32_t *ptext = (uint32_t *) licensed;
120 
121 			for (i = 0; i < 56; i += sizeof (uint32_t), ptext++)
122 				*ptext = cpu_to_be32(*ptext);
123 			init_key = 0;
124 		}
125 
126 		lpfc_read_nv(phba, pmb);
127 		memset((char*)mb->un.varRDnvp.rsvd3, 0,
128 			sizeof (mb->un.varRDnvp.rsvd3));
129 		memcpy((char*)mb->un.varRDnvp.rsvd3, licensed,
130 			 sizeof (licensed));
131 
132 		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
133 
134 		if (rc != MBX_SUCCESS) {
135 			lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
136 					"0324 Config Port initialization "
137 					"error, mbxCmd x%x READ_NVPARM, "
138 					"mbxStatus x%x\n",
139 					mb->mbxCommand, mb->mbxStatus);
140 			mempool_free(pmb, phba->mbox_mem_pool);
141 			return -ERESTART;
142 		}
143 		memcpy(phba->wwnn, (char *)mb->un.varRDnvp.nodename,
144 		       sizeof(phba->wwnn));
145 		memcpy(phba->wwpn, (char *)mb->un.varRDnvp.portname,
146 		       sizeof(phba->wwpn));
147 	}
148 
149 	phba->sli3_options = 0x0;
150 
151 	/* Setup and issue mailbox READ REV command */
152 	lpfc_read_rev(phba, pmb);
153 	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
154 	if (rc != MBX_SUCCESS) {
155 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
156 				"0439 Adapter failed to init, mbxCmd x%x "
157 				"READ_REV, mbxStatus x%x\n",
158 				mb->mbxCommand, mb->mbxStatus);
159 		mempool_free( pmb, phba->mbox_mem_pool);
160 		return -ERESTART;
161 	}
162 
163 
164 	/*
165 	 * The value of rr must be 1 since the driver set the cv field to 1.
166 	 * This setting requires the FW to set all revision fields.
167 	 */
168 	if (mb->un.varRdRev.rr == 0) {
169 		vp->rev.rBit = 0;
170 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
171 				"0440 Adapter failed to init, READ_REV has "
172 				"missing revision information.\n");
173 		mempool_free(pmb, phba->mbox_mem_pool);
174 		return -ERESTART;
175 	}
176 
177 	if (phba->sli_rev == 3 && !mb->un.varRdRev.v3rsp) {
178 		mempool_free(pmb, phba->mbox_mem_pool);
179 		return -EINVAL;
180 	}
181 
182 	/* Save information as VPD data */
183 	vp->rev.rBit = 1;
184 	memcpy(&vp->sli3Feat, &mb->un.varRdRev.sli3Feat, sizeof(uint32_t));
185 	vp->rev.sli1FwRev = mb->un.varRdRev.sli1FwRev;
186 	memcpy(vp->rev.sli1FwName, (char*) mb->un.varRdRev.sli1FwName, 16);
187 	vp->rev.sli2FwRev = mb->un.varRdRev.sli2FwRev;
188 	memcpy(vp->rev.sli2FwName, (char *) mb->un.varRdRev.sli2FwName, 16);
189 	vp->rev.biuRev = mb->un.varRdRev.biuRev;
190 	vp->rev.smRev = mb->un.varRdRev.smRev;
191 	vp->rev.smFwRev = mb->un.varRdRev.un.smFwRev;
192 	vp->rev.endecRev = mb->un.varRdRev.endecRev;
193 	vp->rev.fcphHigh = mb->un.varRdRev.fcphHigh;
194 	vp->rev.fcphLow = mb->un.varRdRev.fcphLow;
195 	vp->rev.feaLevelHigh = mb->un.varRdRev.feaLevelHigh;
196 	vp->rev.feaLevelLow = mb->un.varRdRev.feaLevelLow;
197 	vp->rev.postKernRev = mb->un.varRdRev.postKernRev;
198 	vp->rev.opFwRev = mb->un.varRdRev.opFwRev;
199 
200 	/* If the sli feature level is less then 9, we must
201 	 * tear down all RPIs and VPIs on link down if NPIV
202 	 * is enabled.
203 	 */
204 	if (vp->rev.feaLevelHigh < 9)
205 		phba->sli3_options |= LPFC_SLI3_VPORT_TEARDOWN;
206 
207 	if (lpfc_is_LC_HBA(phba->pcidev->device))
208 		memcpy(phba->RandomData, (char *)&mb->un.varWords[24],
209 						sizeof (phba->RandomData));
210 
211 	/* Get adapter VPD information */
212 	lpfc_vpd_data = kmalloc(DMP_VPD_SIZE, GFP_KERNEL);
213 	if (!lpfc_vpd_data)
214 		goto out_free_mbox;
215 	do {
216 		lpfc_dump_mem(phba, pmb, offset, DMP_REGION_VPD);
217 		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
218 
219 		if (rc != MBX_SUCCESS) {
220 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
221 					"0441 VPD not present on adapter, "
222 					"mbxCmd x%x DUMP VPD, mbxStatus x%x\n",
223 					mb->mbxCommand, mb->mbxStatus);
224 			mb->un.varDmp.word_cnt = 0;
225 		}
226 		/* dump mem may return a zero when finished or we got a
227 		 * mailbox error, either way we are done.
228 		 */
229 		if (mb->un.varDmp.word_cnt == 0)
230 			break;
231 		if (mb->un.varDmp.word_cnt > DMP_VPD_SIZE - offset)
232 			mb->un.varDmp.word_cnt = DMP_VPD_SIZE - offset;
233 		lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
234 				      lpfc_vpd_data + offset,
235 				      mb->un.varDmp.word_cnt);
236 		offset += mb->un.varDmp.word_cnt;
237 	} while (mb->un.varDmp.word_cnt && offset < DMP_VPD_SIZE);
238 	lpfc_parse_vpd(phba, lpfc_vpd_data, offset);
239 
240 	kfree(lpfc_vpd_data);
241 out_free_mbox:
242 	mempool_free(pmb, phba->mbox_mem_pool);
243 	return 0;
244 }
245 
246 /**
247  * lpfc_config_async_cmpl - Completion handler for config async event mbox cmd
248  * @phba: pointer to lpfc hba data structure.
249  * @pmboxq: pointer to the driver internal queue element for mailbox command.
250  *
251  * This is the completion handler for driver's configuring asynchronous event
252  * mailbox command to the device. If the mailbox command returns successfully,
253  * it will set internal async event support flag to 1; otherwise, it will
254  * set internal async event support flag to 0.
255  **/
256 static void
lpfc_config_async_cmpl(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmboxq)257 lpfc_config_async_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
258 {
259 	if (pmboxq->u.mb.mbxStatus == MBX_SUCCESS)
260 		phba->temp_sensor_support = 1;
261 	else
262 		phba->temp_sensor_support = 0;
263 	mempool_free(pmboxq, phba->mbox_mem_pool);
264 	return;
265 }
266 
267 /**
268  * lpfc_dump_wakeup_param_cmpl - dump memory mailbox command completion handler
269  * @phba: pointer to lpfc hba data structure.
270  * @pmboxq: pointer to the driver internal queue element for mailbox command.
271  *
272  * This is the completion handler for dump mailbox command for getting
273  * wake up parameters. When this command complete, the response contain
274  * Option rom version of the HBA. This function translate the version number
275  * into a human readable string and store it in OptionROMVersion.
276  **/
277 static void
lpfc_dump_wakeup_param_cmpl(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmboxq)278 lpfc_dump_wakeup_param_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
279 {
280 	struct prog_id *prg;
281 	uint32_t prog_id_word;
282 	char dist = ' ';
283 	/* character array used for decoding dist type. */
284 	char dist_char[] = "nabx";
285 
286 	if (pmboxq->u.mb.mbxStatus != MBX_SUCCESS) {
287 		mempool_free(pmboxq, phba->mbox_mem_pool);
288 		return;
289 	}
290 
291 	prg = (struct prog_id *) &prog_id_word;
292 
293 	/* word 7 contain option rom version */
294 	prog_id_word = pmboxq->u.mb.un.varWords[7];
295 
296 	/* Decode the Option rom version word to a readable string */
297 	if (prg->dist < 4)
298 		dist = dist_char[prg->dist];
299 
300 	if ((prg->dist == 3) && (prg->num == 0))
301 		sprintf(phba->OptionROMVersion, "%d.%d%d",
302 			prg->ver, prg->rev, prg->lev);
303 	else
304 		sprintf(phba->OptionROMVersion, "%d.%d%d%c%d",
305 			prg->ver, prg->rev, prg->lev,
306 			dist, prg->num);
307 	mempool_free(pmboxq, phba->mbox_mem_pool);
308 	return;
309 }
310 
311 /**
312  * lpfc_update_vport_wwn - Updates the fc_nodename, fc_portname,
313  *	cfg_soft_wwnn, cfg_soft_wwpn
314  * @vport: pointer to lpfc vport data structure.
315  *
316  *
317  * Return codes
318  *   None.
319  **/
320 void
lpfc_update_vport_wwn(struct lpfc_vport * vport)321 lpfc_update_vport_wwn(struct lpfc_vport *vport)
322 {
323 	/* If the soft name exists then update it using the service params */
324 	if (vport->phba->cfg_soft_wwnn)
325 		u64_to_wwn(vport->phba->cfg_soft_wwnn,
326 			   vport->fc_sparam.nodeName.u.wwn);
327 	if (vport->phba->cfg_soft_wwpn)
328 		u64_to_wwn(vport->phba->cfg_soft_wwpn,
329 			   vport->fc_sparam.portName.u.wwn);
330 
331 	/*
332 	 * If the name is empty or there exists a soft name
333 	 * then copy the service params name, otherwise use the fc name
334 	 */
335 	if (vport->fc_nodename.u.wwn[0] == 0 || vport->phba->cfg_soft_wwnn)
336 		memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
337 			sizeof(struct lpfc_name));
338 	else
339 		memcpy(&vport->fc_sparam.nodeName, &vport->fc_nodename,
340 			sizeof(struct lpfc_name));
341 
342 	if (vport->fc_portname.u.wwn[0] == 0 || vport->phba->cfg_soft_wwpn)
343 		memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
344 			sizeof(struct lpfc_name));
345 	else
346 		memcpy(&vport->fc_sparam.portName, &vport->fc_portname,
347 			sizeof(struct lpfc_name));
348 }
349 
350 /**
351  * lpfc_config_port_post - Perform lpfc initialization after config port
352  * @phba: pointer to lpfc hba data structure.
353  *
354  * This routine will do LPFC initialization after the CONFIG_PORT mailbox
355  * command call. It performs all internal resource and state setups on the
356  * port: post IOCB buffers, enable appropriate host interrupt attentions,
357  * ELS ring timers, etc.
358  *
359  * Return codes
360  *   0 - success.
361  *   Any other value - error.
362  **/
363 int
lpfc_config_port_post(struct lpfc_hba * phba)364 lpfc_config_port_post(struct lpfc_hba *phba)
365 {
366 	struct lpfc_vport *vport = phba->pport;
367 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
368 	LPFC_MBOXQ_t *pmb;
369 	MAILBOX_t *mb;
370 	struct lpfc_dmabuf *mp;
371 	struct lpfc_sli *psli = &phba->sli;
372 	uint32_t status, timeout;
373 	int i, j;
374 	int rc;
375 
376 	spin_lock_irq(&phba->hbalock);
377 	/*
378 	 * If the Config port completed correctly the HBA is not
379 	 * over heated any more.
380 	 */
381 	if (phba->over_temp_state == HBA_OVER_TEMP)
382 		phba->over_temp_state = HBA_NORMAL_TEMP;
383 	spin_unlock_irq(&phba->hbalock);
384 
385 	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
386 	if (!pmb) {
387 		phba->link_state = LPFC_HBA_ERROR;
388 		return -ENOMEM;
389 	}
390 	mb = &pmb->u.mb;
391 
392 	/* Get login parameters for NID.  */
393 	rc = lpfc_read_sparam(phba, pmb, 0);
394 	if (rc) {
395 		mempool_free(pmb, phba->mbox_mem_pool);
396 		return -ENOMEM;
397 	}
398 
399 	pmb->vport = vport;
400 	if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
401 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
402 				"0448 Adapter failed init, mbxCmd x%x "
403 				"READ_SPARM mbxStatus x%x\n",
404 				mb->mbxCommand, mb->mbxStatus);
405 		phba->link_state = LPFC_HBA_ERROR;
406 		mp = (struct lpfc_dmabuf *) pmb->context1;
407 		mempool_free(pmb, phba->mbox_mem_pool);
408 		lpfc_mbuf_free(phba, mp->virt, mp->phys);
409 		kfree(mp);
410 		return -EIO;
411 	}
412 
413 	mp = (struct lpfc_dmabuf *) pmb->context1;
414 
415 	memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
416 	lpfc_mbuf_free(phba, mp->virt, mp->phys);
417 	kfree(mp);
418 	pmb->context1 = NULL;
419 	lpfc_update_vport_wwn(vport);
420 
421 	/* Update the fc_host data structures with new wwn. */
422 	fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
423 	fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
424 	fc_host_max_npiv_vports(shost) = phba->max_vpi;
425 
426 	/* If no serial number in VPD data, use low 6 bytes of WWNN */
427 	/* This should be consolidated into parse_vpd ? - mr */
428 	if (phba->SerialNumber[0] == 0) {
429 		uint8_t *outptr;
430 
431 		outptr = &vport->fc_nodename.u.s.IEEE[0];
432 		for (i = 0; i < 12; i++) {
433 			status = *outptr++;
434 			j = ((status & 0xf0) >> 4);
435 			if (j <= 9)
436 				phba->SerialNumber[i] =
437 				    (char)((uint8_t) 0x30 + (uint8_t) j);
438 			else
439 				phba->SerialNumber[i] =
440 				    (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
441 			i++;
442 			j = (status & 0xf);
443 			if (j <= 9)
444 				phba->SerialNumber[i] =
445 				    (char)((uint8_t) 0x30 + (uint8_t) j);
446 			else
447 				phba->SerialNumber[i] =
448 				    (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
449 		}
450 	}
451 
452 	lpfc_read_config(phba, pmb);
453 	pmb->vport = vport;
454 	if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
455 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
456 				"0453 Adapter failed to init, mbxCmd x%x "
457 				"READ_CONFIG, mbxStatus x%x\n",
458 				mb->mbxCommand, mb->mbxStatus);
459 		phba->link_state = LPFC_HBA_ERROR;
460 		mempool_free( pmb, phba->mbox_mem_pool);
461 		return -EIO;
462 	}
463 
464 	/* Check if the port is disabled */
465 	lpfc_sli_read_link_ste(phba);
466 
467 	/* Reset the DFT_HBA_Q_DEPTH to the max xri  */
468 	if (phba->cfg_hba_queue_depth > (mb->un.varRdConfig.max_xri+1))
469 		phba->cfg_hba_queue_depth =
470 			(mb->un.varRdConfig.max_xri + 1) -
471 					lpfc_sli4_get_els_iocb_cnt(phba);
472 
473 	phba->lmt = mb->un.varRdConfig.lmt;
474 
475 	/* Get the default values for Model Name and Description */
476 	lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
477 
478 	phba->link_state = LPFC_LINK_DOWN;
479 
480 	/* Only process IOCBs on ELS ring till hba_state is READY */
481 	if (psli->ring[psli->extra_ring].cmdringaddr)
482 		psli->ring[psli->extra_ring].flag |= LPFC_STOP_IOCB_EVENT;
483 	if (psli->ring[psli->fcp_ring].cmdringaddr)
484 		psli->ring[psli->fcp_ring].flag |= LPFC_STOP_IOCB_EVENT;
485 	if (psli->ring[psli->next_ring].cmdringaddr)
486 		psli->ring[psli->next_ring].flag |= LPFC_STOP_IOCB_EVENT;
487 
488 	/* Post receive buffers for desired rings */
489 	if (phba->sli_rev != 3)
490 		lpfc_post_rcv_buf(phba);
491 
492 	/*
493 	 * Configure HBA MSI-X attention conditions to messages if MSI-X mode
494 	 */
495 	if (phba->intr_type == MSIX) {
496 		rc = lpfc_config_msi(phba, pmb);
497 		if (rc) {
498 			mempool_free(pmb, phba->mbox_mem_pool);
499 			return -EIO;
500 		}
501 		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
502 		if (rc != MBX_SUCCESS) {
503 			lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
504 					"0352 Config MSI mailbox command "
505 					"failed, mbxCmd x%x, mbxStatus x%x\n",
506 					pmb->u.mb.mbxCommand,
507 					pmb->u.mb.mbxStatus);
508 			mempool_free(pmb, phba->mbox_mem_pool);
509 			return -EIO;
510 		}
511 	}
512 
513 	spin_lock_irq(&phba->hbalock);
514 	/* Initialize ERATT handling flag */
515 	phba->hba_flag &= ~HBA_ERATT_HANDLED;
516 
517 	/* Enable appropriate host interrupts */
518 	if (lpfc_readl(phba->HCregaddr, &status)) {
519 		spin_unlock_irq(&phba->hbalock);
520 		return -EIO;
521 	}
522 	status |= HC_MBINT_ENA | HC_ERINT_ENA | HC_LAINT_ENA;
523 	if (psli->num_rings > 0)
524 		status |= HC_R0INT_ENA;
525 	if (psli->num_rings > 1)
526 		status |= HC_R1INT_ENA;
527 	if (psli->num_rings > 2)
528 		status |= HC_R2INT_ENA;
529 	if (psli->num_rings > 3)
530 		status |= HC_R3INT_ENA;
531 
532 	if ((phba->cfg_poll & ENABLE_FCP_RING_POLLING) &&
533 	    (phba->cfg_poll & DISABLE_FCP_RING_INT))
534 		status &= ~(HC_R0INT_ENA);
535 
536 	writel(status, phba->HCregaddr);
537 	readl(phba->HCregaddr); /* flush */
538 	spin_unlock_irq(&phba->hbalock);
539 
540 	/* Set up ring-0 (ELS) timer */
541 	timeout = phba->fc_ratov * 2;
542 	mod_timer(&vport->els_tmofunc, jiffies + HZ * timeout);
543 	/* Set up heart beat (HB) timer */
544 	mod_timer(&phba->hb_tmofunc, jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
545 	phba->hb_outstanding = 0;
546 	phba->last_completion_time = jiffies;
547 	/* Set up error attention (ERATT) polling timer */
548 	mod_timer(&phba->eratt_poll, jiffies + HZ * LPFC_ERATT_POLL_INTERVAL);
549 
550 	if (phba->hba_flag & LINK_DISABLED) {
551 		lpfc_printf_log(phba,
552 			KERN_ERR, LOG_INIT,
553 			"2598 Adapter Link is disabled.\n");
554 		lpfc_down_link(phba, pmb);
555 		pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
556 		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
557 		if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
558 			lpfc_printf_log(phba,
559 			KERN_ERR, LOG_INIT,
560 			"2599 Adapter failed to issue DOWN_LINK"
561 			" mbox command rc 0x%x\n", rc);
562 
563 			mempool_free(pmb, phba->mbox_mem_pool);
564 			return -EIO;
565 		}
566 	} else if (phba->cfg_suppress_link_up == LPFC_INITIALIZE_LINK) {
567 		mempool_free(pmb, phba->mbox_mem_pool);
568 		rc = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);
569 		if (rc)
570 			return rc;
571 	}
572 	/* MBOX buffer will be freed in mbox compl */
573 	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
574 	if (!pmb) {
575 		phba->link_state = LPFC_HBA_ERROR;
576 		return -ENOMEM;
577 	}
578 
579 	lpfc_config_async(phba, pmb, LPFC_ELS_RING);
580 	pmb->mbox_cmpl = lpfc_config_async_cmpl;
581 	pmb->vport = phba->pport;
582 	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
583 
584 	if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
585 		lpfc_printf_log(phba,
586 				KERN_ERR,
587 				LOG_INIT,
588 				"0456 Adapter failed to issue "
589 				"ASYNCEVT_ENABLE mbox status x%x\n",
590 				rc);
591 		mempool_free(pmb, phba->mbox_mem_pool);
592 	}
593 
594 	/* Get Option rom version */
595 	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
596 	if (!pmb) {
597 		phba->link_state = LPFC_HBA_ERROR;
598 		return -ENOMEM;
599 	}
600 
601 	lpfc_dump_wakeup_param(phba, pmb);
602 	pmb->mbox_cmpl = lpfc_dump_wakeup_param_cmpl;
603 	pmb->vport = phba->pport;
604 	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
605 
606 	if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
607 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0435 Adapter failed "
608 				"to get Option ROM version status x%x\n", rc);
609 		mempool_free(pmb, phba->mbox_mem_pool);
610 	}
611 
612 	return 0;
613 }
614 
615 /**
616  * lpfc_hba_init_link - Initialize the FC link
617  * @phba: pointer to lpfc hba data structure.
618  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
619  *
620  * This routine will issue the INIT_LINK mailbox command call.
621  * It is available to other drivers through the lpfc_hba data
622  * structure for use as a delayed link up mechanism with the
623  * module parameter lpfc_suppress_link_up.
624  *
625  * Return code
626  *		0 - success
627  *		Any other value - error
628  **/
629 int
lpfc_hba_init_link(struct lpfc_hba * phba,uint32_t flag)630 lpfc_hba_init_link(struct lpfc_hba *phba, uint32_t flag)
631 {
632 	return lpfc_hba_init_link_fc_topology(phba, phba->cfg_topology, flag);
633 }
634 
635 /**
636  * lpfc_hba_init_link_fc_topology - Initialize FC link with desired topology
637  * @phba: pointer to lpfc hba data structure.
638  * @fc_topology: desired fc topology.
639  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
640  *
641  * This routine will issue the INIT_LINK mailbox command call.
642  * It is available to other drivers through the lpfc_hba data
643  * structure for use as a delayed link up mechanism with the
644  * module parameter lpfc_suppress_link_up.
645  *
646  * Return code
647  *              0 - success
648  *              Any other value - error
649  **/
650 int
lpfc_hba_init_link_fc_topology(struct lpfc_hba * phba,uint32_t fc_topology,uint32_t flag)651 lpfc_hba_init_link_fc_topology(struct lpfc_hba *phba, uint32_t fc_topology,
652 			       uint32_t flag)
653 {
654 	struct lpfc_vport *vport = phba->pport;
655 	LPFC_MBOXQ_t *pmb;
656 	MAILBOX_t *mb;
657 	int rc;
658 
659 	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
660 	if (!pmb) {
661 		phba->link_state = LPFC_HBA_ERROR;
662 		return -ENOMEM;
663 	}
664 	mb = &pmb->u.mb;
665 	pmb->vport = vport;
666 
667 	if ((phba->cfg_link_speed > LPFC_USER_LINK_SPEED_MAX) ||
668 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_1G) &&
669 	     !(phba->lmt & LMT_1Gb)) ||
670 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_2G) &&
671 	     !(phba->lmt & LMT_2Gb)) ||
672 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_4G) &&
673 	     !(phba->lmt & LMT_4Gb)) ||
674 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_8G) &&
675 	     !(phba->lmt & LMT_8Gb)) ||
676 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_10G) &&
677 	     !(phba->lmt & LMT_10Gb)) ||
678 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_16G) &&
679 	     !(phba->lmt & LMT_16Gb))) {
680 		/* Reset link speed to auto */
681 		lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
682 			"1302 Invalid speed for this board:%d "
683 			"Reset link speed to auto.\n",
684 			phba->cfg_link_speed);
685 			phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO;
686 	}
687 	lpfc_init_link(phba, pmb, fc_topology, phba->cfg_link_speed);
688 	pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
689 	if (phba->sli_rev < LPFC_SLI_REV4)
690 		lpfc_set_loopback_flag(phba);
691 	rc = lpfc_sli_issue_mbox(phba, pmb, flag);
692 	if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
693 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
694 			"0498 Adapter failed to init, mbxCmd x%x "
695 			"INIT_LINK, mbxStatus x%x\n",
696 			mb->mbxCommand, mb->mbxStatus);
697 		if (phba->sli_rev <= LPFC_SLI_REV3) {
698 			/* Clear all interrupt enable conditions */
699 			writel(0, phba->HCregaddr);
700 			readl(phba->HCregaddr); /* flush */
701 			/* Clear all pending interrupts */
702 			writel(0xffffffff, phba->HAregaddr);
703 			readl(phba->HAregaddr); /* flush */
704 		}
705 		phba->link_state = LPFC_HBA_ERROR;
706 		if (rc != MBX_BUSY || flag == MBX_POLL)
707 			mempool_free(pmb, phba->mbox_mem_pool);
708 		return -EIO;
709 	}
710 	phba->cfg_suppress_link_up = LPFC_INITIALIZE_LINK;
711 	if (flag == MBX_POLL)
712 		mempool_free(pmb, phba->mbox_mem_pool);
713 
714 	return 0;
715 }
716 
717 /**
718  * lpfc_hba_down_link - this routine downs the FC link
719  * @phba: pointer to lpfc hba data structure.
720  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
721  *
722  * This routine will issue the DOWN_LINK mailbox command call.
723  * It is available to other drivers through the lpfc_hba data
724  * structure for use to stop the link.
725  *
726  * Return code
727  *		0 - success
728  *		Any other value - error
729  **/
730 int
lpfc_hba_down_link(struct lpfc_hba * phba,uint32_t flag)731 lpfc_hba_down_link(struct lpfc_hba *phba, uint32_t flag)
732 {
733 	LPFC_MBOXQ_t *pmb;
734 	int rc;
735 
736 	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
737 	if (!pmb) {
738 		phba->link_state = LPFC_HBA_ERROR;
739 		return -ENOMEM;
740 	}
741 
742 	lpfc_printf_log(phba,
743 		KERN_ERR, LOG_INIT,
744 		"0491 Adapter Link is disabled.\n");
745 	lpfc_down_link(phba, pmb);
746 	pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
747 	rc = lpfc_sli_issue_mbox(phba, pmb, flag);
748 	if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
749 		lpfc_printf_log(phba,
750 		KERN_ERR, LOG_INIT,
751 		"2522 Adapter failed to issue DOWN_LINK"
752 		" mbox command rc 0x%x\n", rc);
753 
754 		mempool_free(pmb, phba->mbox_mem_pool);
755 		return -EIO;
756 	}
757 	if (flag == MBX_POLL)
758 		mempool_free(pmb, phba->mbox_mem_pool);
759 
760 	return 0;
761 }
762 
763 /**
764  * lpfc_hba_down_prep - Perform lpfc uninitialization prior to HBA reset
765  * @phba: pointer to lpfc HBA data structure.
766  *
767  * This routine will do LPFC uninitialization before the HBA is reset when
768  * bringing down the SLI Layer.
769  *
770  * Return codes
771  *   0 - success.
772  *   Any other value - error.
773  **/
774 int
lpfc_hba_down_prep(struct lpfc_hba * phba)775 lpfc_hba_down_prep(struct lpfc_hba *phba)
776 {
777 	struct lpfc_vport **vports;
778 	int i;
779 
780 	if (phba->sli_rev <= LPFC_SLI_REV3) {
781 		/* Disable interrupts */
782 		writel(0, phba->HCregaddr);
783 		readl(phba->HCregaddr); /* flush */
784 	}
785 
786 	if (phba->pport->load_flag & FC_UNLOADING)
787 		lpfc_cleanup_discovery_resources(phba->pport);
788 	else {
789 		vports = lpfc_create_vport_work_array(phba);
790 		if (vports != NULL)
791 			for (i = 0; i <= phba->max_vports &&
792 				vports[i] != NULL; i++)
793 				lpfc_cleanup_discovery_resources(vports[i]);
794 		lpfc_destroy_vport_work_array(phba, vports);
795 	}
796 	return 0;
797 }
798 
799 /**
800  * lpfc_hba_down_post_s3 - Perform lpfc uninitialization after HBA reset
801  * @phba: pointer to lpfc HBA data structure.
802  *
803  * This routine will do uninitialization after the HBA is reset when bring
804  * down the SLI Layer.
805  *
806  * Return codes
807  *   0 - success.
808  *   Any other value - error.
809  **/
810 static int
lpfc_hba_down_post_s3(struct lpfc_hba * phba)811 lpfc_hba_down_post_s3(struct lpfc_hba *phba)
812 {
813 	struct lpfc_sli *psli = &phba->sli;
814 	struct lpfc_sli_ring *pring;
815 	struct lpfc_dmabuf *mp, *next_mp;
816 	LIST_HEAD(completions);
817 	int i;
818 
819 	if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
820 		lpfc_sli_hbqbuf_free_all(phba);
821 	else {
822 		/* Cleanup preposted buffers on the ELS ring */
823 		pring = &psli->ring[LPFC_ELS_RING];
824 		list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
825 			list_del(&mp->list);
826 			pring->postbufq_cnt--;
827 			lpfc_mbuf_free(phba, mp->virt, mp->phys);
828 			kfree(mp);
829 		}
830 	}
831 
832 	spin_lock_irq(&phba->hbalock);
833 	for (i = 0; i < psli->num_rings; i++) {
834 		pring = &psli->ring[i];
835 
836 		/* At this point in time the HBA is either reset or DOA. Either
837 		 * way, nothing should be on txcmplq as it will NEVER complete.
838 		 */
839 		list_splice_init(&pring->txcmplq, &completions);
840 		pring->txcmplq_cnt = 0;
841 		spin_unlock_irq(&phba->hbalock);
842 
843 		/* Cancel all the IOCBs from the completions list */
844 		lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
845 				      IOERR_SLI_ABORTED);
846 
847 		lpfc_sli_abort_iocb_ring(phba, pring);
848 		spin_lock_irq(&phba->hbalock);
849 	}
850 	spin_unlock_irq(&phba->hbalock);
851 
852 	return 0;
853 }
854 
855 /**
856  * lpfc_hba_down_post_s4 - Perform lpfc uninitialization after HBA reset
857  * @phba: pointer to lpfc HBA data structure.
858  *
859  * This routine will do uninitialization after the HBA is reset when bring
860  * down the SLI Layer.
861  *
862  * Return codes
863  *   0 - success.
864  *   Any other value - error.
865  **/
866 static int
lpfc_hba_down_post_s4(struct lpfc_hba * phba)867 lpfc_hba_down_post_s4(struct lpfc_hba *phba)
868 {
869 	struct lpfc_scsi_buf *psb, *psb_next;
870 	LIST_HEAD(aborts);
871 	int ret;
872 	unsigned long iflag = 0;
873 	struct lpfc_sglq *sglq_entry = NULL;
874 
875 	ret = lpfc_hba_down_post_s3(phba);
876 	if (ret)
877 		return ret;
878 	/* At this point in time the HBA is either reset or DOA. Either
879 	 * way, nothing should be on lpfc_abts_els_sgl_list, it needs to be
880 	 * on the lpfc_sgl_list so that it can either be freed if the
881 	 * driver is unloading or reposted if the driver is restarting
882 	 * the port.
883 	 */
884 	spin_lock_irq(&phba->hbalock);  /* required for lpfc_sgl_list and */
885 					/* scsl_buf_list */
886 	/* abts_sgl_list_lock required because worker thread uses this
887 	 * list.
888 	 */
889 	spin_lock(&phba->sli4_hba.abts_sgl_list_lock);
890 	list_for_each_entry(sglq_entry,
891 		&phba->sli4_hba.lpfc_abts_els_sgl_list, list)
892 		sglq_entry->state = SGL_FREED;
893 
894 	list_splice_init(&phba->sli4_hba.lpfc_abts_els_sgl_list,
895 			&phba->sli4_hba.lpfc_sgl_list);
896 	spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
897 	/* abts_scsi_buf_list_lock required because worker thread uses this
898 	 * list.
899 	 */
900 	spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock);
901 	list_splice_init(&phba->sli4_hba.lpfc_abts_scsi_buf_list,
902 			&aborts);
903 	spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock);
904 	spin_unlock_irq(&phba->hbalock);
905 
906 	list_for_each_entry_safe(psb, psb_next, &aborts, list) {
907 		psb->pCmd = NULL;
908 		psb->status = IOSTAT_SUCCESS;
909 	}
910 	spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag);
911 	list_splice(&aborts, &phba->lpfc_scsi_buf_list);
912 	spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag);
913 	return 0;
914 }
915 
916 /**
917  * lpfc_hba_down_post - Wrapper func for hba down post routine
918  * @phba: pointer to lpfc HBA data structure.
919  *
920  * This routine wraps the actual SLI3 or SLI4 routine for performing
921  * uninitialization after the HBA is reset when bring down the SLI Layer.
922  *
923  * Return codes
924  *   0 - success.
925  *   Any other value - error.
926  **/
927 int
lpfc_hba_down_post(struct lpfc_hba * phba)928 lpfc_hba_down_post(struct lpfc_hba *phba)
929 {
930 	return (*phba->lpfc_hba_down_post)(phba);
931 }
932 
933 /**
934  * lpfc_hb_timeout - The HBA-timer timeout handler
935  * @ptr: unsigned long holds the pointer to lpfc hba data structure.
936  *
937  * This is the HBA-timer timeout handler registered to the lpfc driver. When
938  * this timer fires, a HBA timeout event shall be posted to the lpfc driver
939  * work-port-events bitmap and the worker thread is notified. This timeout
940  * event will be used by the worker thread to invoke the actual timeout
941  * handler routine, lpfc_hb_timeout_handler. Any periodical operations will
942  * be performed in the timeout handler and the HBA timeout event bit shall
943  * be cleared by the worker thread after it has taken the event bitmap out.
944  **/
945 static void
lpfc_hb_timeout(unsigned long ptr)946 lpfc_hb_timeout(unsigned long ptr)
947 {
948 	struct lpfc_hba *phba;
949 	uint32_t tmo_posted;
950 	unsigned long iflag;
951 
952 	phba = (struct lpfc_hba *)ptr;
953 
954 	/* Check for heart beat timeout conditions */
955 	spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
956 	tmo_posted = phba->pport->work_port_events & WORKER_HB_TMO;
957 	if (!tmo_posted)
958 		phba->pport->work_port_events |= WORKER_HB_TMO;
959 	spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
960 
961 	/* Tell the worker thread there is work to do */
962 	if (!tmo_posted)
963 		lpfc_worker_wake_up(phba);
964 	return;
965 }
966 
967 /**
968  * lpfc_rrq_timeout - The RRQ-timer timeout handler
969  * @ptr: unsigned long holds the pointer to lpfc hba data structure.
970  *
971  * This is the RRQ-timer timeout handler registered to the lpfc driver. When
972  * this timer fires, a RRQ timeout event shall be posted to the lpfc driver
973  * work-port-events bitmap and the worker thread is notified. This timeout
974  * event will be used by the worker thread to invoke the actual timeout
975  * handler routine, lpfc_rrq_handler. Any periodical operations will
976  * be performed in the timeout handler and the RRQ timeout event bit shall
977  * be cleared by the worker thread after it has taken the event bitmap out.
978  **/
979 static void
lpfc_rrq_timeout(unsigned long ptr)980 lpfc_rrq_timeout(unsigned long ptr)
981 {
982 	struct lpfc_hba *phba;
983 	unsigned long iflag;
984 
985 	phba = (struct lpfc_hba *)ptr;
986 	spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
987 	phba->hba_flag |= HBA_RRQ_ACTIVE;
988 	spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
989 	lpfc_worker_wake_up(phba);
990 }
991 
992 /**
993  * lpfc_hb_mbox_cmpl - The lpfc heart-beat mailbox command callback function
994  * @phba: pointer to lpfc hba data structure.
995  * @pmboxq: pointer to the driver internal queue element for mailbox command.
996  *
997  * This is the callback function to the lpfc heart-beat mailbox command.
998  * If configured, the lpfc driver issues the heart-beat mailbox command to
999  * the HBA every LPFC_HB_MBOX_INTERVAL (current 5) seconds. At the time the
1000  * heart-beat mailbox command is issued, the driver shall set up heart-beat
1001  * timeout timer to LPFC_HB_MBOX_TIMEOUT (current 30) seconds and marks
1002  * heart-beat outstanding state. Once the mailbox command comes back and
1003  * no error conditions detected, the heart-beat mailbox command timer is
1004  * reset to LPFC_HB_MBOX_INTERVAL seconds and the heart-beat outstanding
1005  * state is cleared for the next heart-beat. If the timer expired with the
1006  * heart-beat outstanding state set, the driver will put the HBA offline.
1007  **/
1008 static void
lpfc_hb_mbox_cmpl(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmboxq)1009 lpfc_hb_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
1010 {
1011 	unsigned long drvr_flag;
1012 
1013 	spin_lock_irqsave(&phba->hbalock, drvr_flag);
1014 	phba->hb_outstanding = 0;
1015 	spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
1016 
1017 	/* Check and reset heart-beat timer is necessary */
1018 	mempool_free(pmboxq, phba->mbox_mem_pool);
1019 	if (!(phba->pport->fc_flag & FC_OFFLINE_MODE) &&
1020 		!(phba->link_state == LPFC_HBA_ERROR) &&
1021 		!(phba->pport->load_flag & FC_UNLOADING))
1022 		mod_timer(&phba->hb_tmofunc,
1023 			jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
1024 	return;
1025 }
1026 
1027 /**
1028  * lpfc_hb_timeout_handler - The HBA-timer timeout handler
1029  * @phba: pointer to lpfc hba data structure.
1030  *
1031  * This is the actual HBA-timer timeout handler to be invoked by the worker
1032  * thread whenever the HBA timer fired and HBA-timeout event posted. This
1033  * handler performs any periodic operations needed for the device. If such
1034  * periodic event has already been attended to either in the interrupt handler
1035  * or by processing slow-ring or fast-ring events within the HBA-timer
1036  * timeout window (LPFC_HB_MBOX_INTERVAL), this handler just simply resets
1037  * the timer for the next timeout period. If lpfc heart-beat mailbox command
1038  * is configured and there is no heart-beat mailbox command outstanding, a
1039  * heart-beat mailbox is issued and timer set properly. Otherwise, if there
1040  * has been a heart-beat mailbox command outstanding, the HBA shall be put
1041  * to offline.
1042  **/
1043 void
lpfc_hb_timeout_handler(struct lpfc_hba * phba)1044 lpfc_hb_timeout_handler(struct lpfc_hba *phba)
1045 {
1046 	struct lpfc_vport **vports;
1047 	LPFC_MBOXQ_t *pmboxq;
1048 	struct lpfc_dmabuf *buf_ptr;
1049 	int retval, i;
1050 	struct lpfc_sli *psli = &phba->sli;
1051 	LIST_HEAD(completions);
1052 
1053 	vports = lpfc_create_vport_work_array(phba);
1054 	if (vports != NULL)
1055 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1056 			lpfc_rcv_seq_check_edtov(vports[i]);
1057 	lpfc_destroy_vport_work_array(phba, vports);
1058 
1059 	if ((phba->link_state == LPFC_HBA_ERROR) ||
1060 		(phba->pport->load_flag & FC_UNLOADING) ||
1061 		(phba->pport->fc_flag & FC_OFFLINE_MODE))
1062 		return;
1063 
1064 	spin_lock_irq(&phba->pport->work_port_lock);
1065 
1066 	if (time_after(phba->last_completion_time + LPFC_HB_MBOX_INTERVAL * HZ,
1067 		jiffies)) {
1068 		spin_unlock_irq(&phba->pport->work_port_lock);
1069 		if (!phba->hb_outstanding)
1070 			mod_timer(&phba->hb_tmofunc,
1071 				jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
1072 		else
1073 			mod_timer(&phba->hb_tmofunc,
1074 				jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
1075 		return;
1076 	}
1077 	spin_unlock_irq(&phba->pport->work_port_lock);
1078 
1079 	if (phba->elsbuf_cnt &&
1080 		(phba->elsbuf_cnt == phba->elsbuf_prev_cnt)) {
1081 		spin_lock_irq(&phba->hbalock);
1082 		list_splice_init(&phba->elsbuf, &completions);
1083 		phba->elsbuf_cnt = 0;
1084 		phba->elsbuf_prev_cnt = 0;
1085 		spin_unlock_irq(&phba->hbalock);
1086 
1087 		while (!list_empty(&completions)) {
1088 			list_remove_head(&completions, buf_ptr,
1089 				struct lpfc_dmabuf, list);
1090 			lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
1091 			kfree(buf_ptr);
1092 		}
1093 	}
1094 	phba->elsbuf_prev_cnt = phba->elsbuf_cnt;
1095 
1096 	/* If there is no heart beat outstanding, issue a heartbeat command */
1097 	if (phba->cfg_enable_hba_heartbeat) {
1098 		if (!phba->hb_outstanding) {
1099 			if ((!(psli->sli_flag & LPFC_SLI_MBOX_ACTIVE)) &&
1100 				(list_empty(&psli->mboxq))) {
1101 				pmboxq = mempool_alloc(phba->mbox_mem_pool,
1102 							GFP_KERNEL);
1103 				if (!pmboxq) {
1104 					mod_timer(&phba->hb_tmofunc,
1105 						 jiffies +
1106 						 HZ * LPFC_HB_MBOX_INTERVAL);
1107 					return;
1108 				}
1109 
1110 				lpfc_heart_beat(phba, pmboxq);
1111 				pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl;
1112 				pmboxq->vport = phba->pport;
1113 				retval = lpfc_sli_issue_mbox(phba, pmboxq,
1114 						MBX_NOWAIT);
1115 
1116 				if (retval != MBX_BUSY &&
1117 					retval != MBX_SUCCESS) {
1118 					mempool_free(pmboxq,
1119 							phba->mbox_mem_pool);
1120 					mod_timer(&phba->hb_tmofunc,
1121 						jiffies +
1122 						HZ * LPFC_HB_MBOX_INTERVAL);
1123 					return;
1124 				}
1125 				phba->skipped_hb = 0;
1126 				phba->hb_outstanding = 1;
1127 			} else if (time_before_eq(phba->last_completion_time,
1128 					phba->skipped_hb)) {
1129 				lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
1130 					"2857 Last completion time not "
1131 					" updated in %d ms\n",
1132 					jiffies_to_msecs(jiffies
1133 						 - phba->last_completion_time));
1134 			} else
1135 				phba->skipped_hb = jiffies;
1136 
1137 			mod_timer(&phba->hb_tmofunc,
1138 				  jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
1139 			return;
1140 		} else {
1141 			/*
1142 			* If heart beat timeout called with hb_outstanding set
1143 			* we need to give the hb mailbox cmd a chance to
1144 			* complete or TMO.
1145 			*/
1146 			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
1147 					"0459 Adapter heartbeat still out"
1148 					"standing:last compl time was %d ms.\n",
1149 					jiffies_to_msecs(jiffies
1150 						 - phba->last_completion_time));
1151 			mod_timer(&phba->hb_tmofunc,
1152 				  jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
1153 		}
1154 	}
1155 }
1156 
1157 /**
1158  * lpfc_offline_eratt - Bring lpfc offline on hardware error attention
1159  * @phba: pointer to lpfc hba data structure.
1160  *
1161  * This routine is called to bring the HBA offline when HBA hardware error
1162  * other than Port Error 6 has been detected.
1163  **/
1164 static void
lpfc_offline_eratt(struct lpfc_hba * phba)1165 lpfc_offline_eratt(struct lpfc_hba *phba)
1166 {
1167 	struct lpfc_sli   *psli = &phba->sli;
1168 
1169 	spin_lock_irq(&phba->hbalock);
1170 	psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1171 	spin_unlock_irq(&phba->hbalock);
1172 	lpfc_offline_prep(phba);
1173 
1174 	lpfc_offline(phba);
1175 	lpfc_reset_barrier(phba);
1176 	spin_lock_irq(&phba->hbalock);
1177 	lpfc_sli_brdreset(phba);
1178 	spin_unlock_irq(&phba->hbalock);
1179 	lpfc_hba_down_post(phba);
1180 	lpfc_sli_brdready(phba, HS_MBRDY);
1181 	lpfc_unblock_mgmt_io(phba);
1182 	phba->link_state = LPFC_HBA_ERROR;
1183 	return;
1184 }
1185 
1186 /**
1187  * lpfc_sli4_offline_eratt - Bring lpfc offline on SLI4 hardware error attention
1188  * @phba: pointer to lpfc hba data structure.
1189  *
1190  * This routine is called to bring a SLI4 HBA offline when HBA hardware error
1191  * other than Port Error 6 has been detected.
1192  **/
1193 static void
lpfc_sli4_offline_eratt(struct lpfc_hba * phba)1194 lpfc_sli4_offline_eratt(struct lpfc_hba *phba)
1195 {
1196 	lpfc_offline_prep(phba);
1197 	lpfc_offline(phba);
1198 	lpfc_sli4_brdreset(phba);
1199 	lpfc_hba_down_post(phba);
1200 	lpfc_sli4_post_status_check(phba);
1201 	lpfc_unblock_mgmt_io(phba);
1202 	phba->link_state = LPFC_HBA_ERROR;
1203 }
1204 
1205 /**
1206  * lpfc_handle_deferred_eratt - The HBA hardware deferred error handler
1207  * @phba: pointer to lpfc hba data structure.
1208  *
1209  * This routine is invoked to handle the deferred HBA hardware error
1210  * conditions. This type of error is indicated by HBA by setting ER1
1211  * and another ER bit in the host status register. The driver will
1212  * wait until the ER1 bit clears before handling the error condition.
1213  **/
1214 static void
lpfc_handle_deferred_eratt(struct lpfc_hba * phba)1215 lpfc_handle_deferred_eratt(struct lpfc_hba *phba)
1216 {
1217 	uint32_t old_host_status = phba->work_hs;
1218 	struct lpfc_sli_ring  *pring;
1219 	struct lpfc_sli *psli = &phba->sli;
1220 
1221 	/* If the pci channel is offline, ignore possible errors,
1222 	 * since we cannot communicate with the pci card anyway.
1223 	 */
1224 	if (pci_channel_offline(phba->pcidev)) {
1225 		spin_lock_irq(&phba->hbalock);
1226 		phba->hba_flag &= ~DEFER_ERATT;
1227 		spin_unlock_irq(&phba->hbalock);
1228 		return;
1229 	}
1230 
1231 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1232 		"0479 Deferred Adapter Hardware Error "
1233 		"Data: x%x x%x x%x\n",
1234 		phba->work_hs,
1235 		phba->work_status[0], phba->work_status[1]);
1236 
1237 	spin_lock_irq(&phba->hbalock);
1238 	psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1239 	spin_unlock_irq(&phba->hbalock);
1240 
1241 
1242 	/*
1243 	 * Firmware stops when it triggred erratt. That could cause the I/Os
1244 	 * dropped by the firmware. Error iocb (I/O) on txcmplq and let the
1245 	 * SCSI layer retry it after re-establishing link.
1246 	 */
1247 	pring = &psli->ring[psli->fcp_ring];
1248 	lpfc_sli_abort_iocb_ring(phba, pring);
1249 
1250 	/*
1251 	 * There was a firmware error. Take the hba offline and then
1252 	 * attempt to restart it.
1253 	 */
1254 	lpfc_offline_prep(phba);
1255 	lpfc_offline(phba);
1256 
1257 	/* Wait for the ER1 bit to clear.*/
1258 	while (phba->work_hs & HS_FFER1) {
1259 		msleep(100);
1260 		if (lpfc_readl(phba->HSregaddr, &phba->work_hs)) {
1261 			phba->work_hs = UNPLUG_ERR ;
1262 			break;
1263 		}
1264 		/* If driver is unloading let the worker thread continue */
1265 		if (phba->pport->load_flag & FC_UNLOADING) {
1266 			phba->work_hs = 0;
1267 			break;
1268 		}
1269 	}
1270 
1271 	/*
1272 	 * This is to ptrotect against a race condition in which
1273 	 * first write to the host attention register clear the
1274 	 * host status register.
1275 	 */
1276 	if ((!phba->work_hs) && (!(phba->pport->load_flag & FC_UNLOADING)))
1277 		phba->work_hs = old_host_status & ~HS_FFER1;
1278 
1279 	spin_lock_irq(&phba->hbalock);
1280 	phba->hba_flag &= ~DEFER_ERATT;
1281 	spin_unlock_irq(&phba->hbalock);
1282 	phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
1283 	phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
1284 }
1285 
1286 static void
lpfc_board_errevt_to_mgmt(struct lpfc_hba * phba)1287 lpfc_board_errevt_to_mgmt(struct lpfc_hba *phba)
1288 {
1289 	struct lpfc_board_event_header board_event;
1290 	struct Scsi_Host *shost;
1291 
1292 	board_event.event_type = FC_REG_BOARD_EVENT;
1293 	board_event.subcategory = LPFC_EVENT_PORTINTERR;
1294 	shost = lpfc_shost_from_vport(phba->pport);
1295 	fc_host_post_vendor_event(shost, fc_get_event_number(),
1296 				  sizeof(board_event),
1297 				  (char *) &board_event,
1298 				  LPFC_NL_VENDOR_ID);
1299 }
1300 
1301 /**
1302  * lpfc_handle_eratt_s3 - The SLI3 HBA hardware error handler
1303  * @phba: pointer to lpfc hba data structure.
1304  *
1305  * This routine is invoked to handle the following HBA hardware error
1306  * conditions:
1307  * 1 - HBA error attention interrupt
1308  * 2 - DMA ring index out of range
1309  * 3 - Mailbox command came back as unknown
1310  **/
1311 static void
lpfc_handle_eratt_s3(struct lpfc_hba * phba)1312 lpfc_handle_eratt_s3(struct lpfc_hba *phba)
1313 {
1314 	struct lpfc_vport *vport = phba->pport;
1315 	struct lpfc_sli   *psli = &phba->sli;
1316 	struct lpfc_sli_ring  *pring;
1317 	uint32_t event_data;
1318 	unsigned long temperature;
1319 	struct temp_event temp_event_data;
1320 	struct Scsi_Host  *shost;
1321 
1322 	/* If the pci channel is offline, ignore possible errors,
1323 	 * since we cannot communicate with the pci card anyway.
1324 	 */
1325 	if (pci_channel_offline(phba->pcidev)) {
1326 		spin_lock_irq(&phba->hbalock);
1327 		phba->hba_flag &= ~DEFER_ERATT;
1328 		spin_unlock_irq(&phba->hbalock);
1329 		return;
1330 	}
1331 
1332 	/* If resets are disabled then leave the HBA alone and return */
1333 	if (!phba->cfg_enable_hba_reset)
1334 		return;
1335 
1336 	/* Send an internal error event to mgmt application */
1337 	lpfc_board_errevt_to_mgmt(phba);
1338 
1339 	if (phba->hba_flag & DEFER_ERATT)
1340 		lpfc_handle_deferred_eratt(phba);
1341 
1342 	if ((phba->work_hs & HS_FFER6) || (phba->work_hs & HS_FFER8)) {
1343 		if (phba->work_hs & HS_FFER6)
1344 			/* Re-establishing Link */
1345 			lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1346 					"1301 Re-establishing Link "
1347 					"Data: x%x x%x x%x\n",
1348 					phba->work_hs, phba->work_status[0],
1349 					phba->work_status[1]);
1350 		if (phba->work_hs & HS_FFER8)
1351 			/* Device Zeroization */
1352 			lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1353 					"2861 Host Authentication device "
1354 					"zeroization Data:x%x x%x x%x\n",
1355 					phba->work_hs, phba->work_status[0],
1356 					phba->work_status[1]);
1357 
1358 		spin_lock_irq(&phba->hbalock);
1359 		psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1360 		spin_unlock_irq(&phba->hbalock);
1361 
1362 		/*
1363 		* Firmware stops when it triggled erratt with HS_FFER6.
1364 		* That could cause the I/Os dropped by the firmware.
1365 		* Error iocb (I/O) on txcmplq and let the SCSI layer
1366 		* retry it after re-establishing link.
1367 		*/
1368 		pring = &psli->ring[psli->fcp_ring];
1369 		lpfc_sli_abort_iocb_ring(phba, pring);
1370 
1371 		/*
1372 		 * There was a firmware error.  Take the hba offline and then
1373 		 * attempt to restart it.
1374 		 */
1375 		lpfc_offline_prep(phba);
1376 		lpfc_offline(phba);
1377 		lpfc_sli_brdrestart(phba);
1378 		if (lpfc_online(phba) == 0) {	/* Initialize the HBA */
1379 			lpfc_unblock_mgmt_io(phba);
1380 			return;
1381 		}
1382 		lpfc_unblock_mgmt_io(phba);
1383 	} else if (phba->work_hs & HS_CRIT_TEMP) {
1384 		temperature = readl(phba->MBslimaddr + TEMPERATURE_OFFSET);
1385 		temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
1386 		temp_event_data.event_code = LPFC_CRIT_TEMP;
1387 		temp_event_data.data = (uint32_t)temperature;
1388 
1389 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1390 				"0406 Adapter maximum temperature exceeded "
1391 				"(%ld), taking this port offline "
1392 				"Data: x%x x%x x%x\n",
1393 				temperature, phba->work_hs,
1394 				phba->work_status[0], phba->work_status[1]);
1395 
1396 		shost = lpfc_shost_from_vport(phba->pport);
1397 		fc_host_post_vendor_event(shost, fc_get_event_number(),
1398 					  sizeof(temp_event_data),
1399 					  (char *) &temp_event_data,
1400 					  SCSI_NL_VID_TYPE_PCI
1401 					  | PCI_VENDOR_ID_EMULEX);
1402 
1403 		spin_lock_irq(&phba->hbalock);
1404 		phba->over_temp_state = HBA_OVER_TEMP;
1405 		spin_unlock_irq(&phba->hbalock);
1406 		lpfc_offline_eratt(phba);
1407 
1408 	} else {
1409 		/* The if clause above forces this code path when the status
1410 		 * failure is a value other than FFER6. Do not call the offline
1411 		 * twice. This is the adapter hardware error path.
1412 		 */
1413 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1414 				"0457 Adapter Hardware Error "
1415 				"Data: x%x x%x x%x\n",
1416 				phba->work_hs,
1417 				phba->work_status[0], phba->work_status[1]);
1418 
1419 		event_data = FC_REG_DUMP_EVENT;
1420 		shost = lpfc_shost_from_vport(vport);
1421 		fc_host_post_vendor_event(shost, fc_get_event_number(),
1422 				sizeof(event_data), (char *) &event_data,
1423 				SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
1424 
1425 		lpfc_offline_eratt(phba);
1426 	}
1427 	return;
1428 }
1429 
1430 /**
1431  * lpfc_handle_eratt_s4 - The SLI4 HBA hardware error handler
1432  * @phba: pointer to lpfc hba data structure.
1433  *
1434  * This routine is invoked to handle the SLI4 HBA hardware error attention
1435  * conditions.
1436  **/
1437 static void
lpfc_handle_eratt_s4(struct lpfc_hba * phba)1438 lpfc_handle_eratt_s4(struct lpfc_hba *phba)
1439 {
1440 	struct lpfc_vport *vport = phba->pport;
1441 	uint32_t event_data;
1442 	struct Scsi_Host *shost;
1443 	uint32_t if_type;
1444 	struct lpfc_register portstat_reg = {0};
1445 	uint32_t reg_err1, reg_err2;
1446 	uint32_t uerrlo_reg, uemasklo_reg;
1447 	uint32_t pci_rd_rc1, pci_rd_rc2;
1448 	int rc;
1449 
1450 	/* If the pci channel is offline, ignore possible errors, since
1451 	 * we cannot communicate with the pci card anyway.
1452 	 */
1453 	if (pci_channel_offline(phba->pcidev))
1454 		return;
1455 	/* If resets are disabled then leave the HBA alone and return */
1456 	if (!phba->cfg_enable_hba_reset)
1457 		return;
1458 
1459 	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
1460 	switch (if_type) {
1461 	case LPFC_SLI_INTF_IF_TYPE_0:
1462 		pci_rd_rc1 = lpfc_readl(
1463 				phba->sli4_hba.u.if_type0.UERRLOregaddr,
1464 				&uerrlo_reg);
1465 		pci_rd_rc2 = lpfc_readl(
1466 				phba->sli4_hba.u.if_type0.UEMASKLOregaddr,
1467 				&uemasklo_reg);
1468 		/* consider PCI bus read error as pci_channel_offline */
1469 		if (pci_rd_rc1 == -EIO && pci_rd_rc2 == -EIO)
1470 			return;
1471 		lpfc_sli4_offline_eratt(phba);
1472 		break;
1473 	case LPFC_SLI_INTF_IF_TYPE_2:
1474 		pci_rd_rc1 = lpfc_readl(
1475 				phba->sli4_hba.u.if_type2.STATUSregaddr,
1476 				&portstat_reg.word0);
1477 		/* consider PCI bus read error as pci_channel_offline */
1478 		if (pci_rd_rc1 == -EIO) {
1479 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1480 				"3151 PCI bus read access failure: x%x\n",
1481 				readl(phba->sli4_hba.u.if_type2.STATUSregaddr));
1482 			return;
1483 		}
1484 		reg_err1 = readl(phba->sli4_hba.u.if_type2.ERR1regaddr);
1485 		reg_err2 = readl(phba->sli4_hba.u.if_type2.ERR2regaddr);
1486 		if (bf_get(lpfc_sliport_status_oti, &portstat_reg)) {
1487 			/* TODO: Register for Overtemp async events. */
1488 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1489 				"2889 Port Overtemperature event, "
1490 				"taking port offline\n");
1491 			spin_lock_irq(&phba->hbalock);
1492 			phba->over_temp_state = HBA_OVER_TEMP;
1493 			spin_unlock_irq(&phba->hbalock);
1494 			lpfc_sli4_offline_eratt(phba);
1495 			break;
1496 		}
1497 		if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
1498 		    reg_err2 == SLIPORT_ERR2_REG_FW_RESTART)
1499 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1500 					"3143 Port Down: Firmware Restarted\n");
1501 		else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
1502 			 reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
1503 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1504 					"3144 Port Down: Debug Dump\n");
1505 		else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
1506 			 reg_err2 == SLIPORT_ERR2_REG_FUNC_PROVISON)
1507 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1508 					"3145 Port Down: Provisioning\n");
1509 		/*
1510 		 * On error status condition, driver need to wait for port
1511 		 * ready before performing reset.
1512 		 */
1513 		rc = lpfc_sli4_pdev_status_reg_wait(phba);
1514 		if (!rc) {
1515 			/* need reset: attempt for port recovery */
1516 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1517 					"2887 Reset Needed: Attempting Port "
1518 					"Recovery...\n");
1519 			lpfc_offline_prep(phba);
1520 			lpfc_offline(phba);
1521 			lpfc_sli_brdrestart(phba);
1522 			if (lpfc_online(phba) == 0) {
1523 				lpfc_unblock_mgmt_io(phba);
1524 				/* don't report event on forced debug dump */
1525 				if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
1526 				    reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
1527 					return;
1528 				else
1529 					break;
1530 			}
1531 			/* fall through for not able to recover */
1532 		}
1533 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1534 				"3152 Unrecoverable error, bring the port "
1535 				"offline\n");
1536 		lpfc_sli4_offline_eratt(phba);
1537 		break;
1538 	case LPFC_SLI_INTF_IF_TYPE_1:
1539 	default:
1540 		break;
1541 	}
1542 	lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
1543 			"3123 Report dump event to upper layer\n");
1544 	/* Send an internal error event to mgmt application */
1545 	lpfc_board_errevt_to_mgmt(phba);
1546 
1547 	event_data = FC_REG_DUMP_EVENT;
1548 	shost = lpfc_shost_from_vport(vport);
1549 	fc_host_post_vendor_event(shost, fc_get_event_number(),
1550 				  sizeof(event_data), (char *) &event_data,
1551 				  SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
1552 }
1553 
1554 /**
1555  * lpfc_handle_eratt - Wrapper func for handling hba error attention
1556  * @phba: pointer to lpfc HBA data structure.
1557  *
1558  * This routine wraps the actual SLI3 or SLI4 hba error attention handling
1559  * routine from the API jump table function pointer from the lpfc_hba struct.
1560  *
1561  * Return codes
1562  *   0 - success.
1563  *   Any other value - error.
1564  **/
1565 void
lpfc_handle_eratt(struct lpfc_hba * phba)1566 lpfc_handle_eratt(struct lpfc_hba *phba)
1567 {
1568 	(*phba->lpfc_handle_eratt)(phba);
1569 }
1570 
1571 /**
1572  * lpfc_handle_latt - The HBA link event handler
1573  * @phba: pointer to lpfc hba data structure.
1574  *
1575  * This routine is invoked from the worker thread to handle a HBA host
1576  * attention link event.
1577  **/
1578 void
lpfc_handle_latt(struct lpfc_hba * phba)1579 lpfc_handle_latt(struct lpfc_hba *phba)
1580 {
1581 	struct lpfc_vport *vport = phba->pport;
1582 	struct lpfc_sli   *psli = &phba->sli;
1583 	LPFC_MBOXQ_t *pmb;
1584 	volatile uint32_t control;
1585 	struct lpfc_dmabuf *mp;
1586 	int rc = 0;
1587 
1588 	pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1589 	if (!pmb) {
1590 		rc = 1;
1591 		goto lpfc_handle_latt_err_exit;
1592 	}
1593 
1594 	mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
1595 	if (!mp) {
1596 		rc = 2;
1597 		goto lpfc_handle_latt_free_pmb;
1598 	}
1599 
1600 	mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
1601 	if (!mp->virt) {
1602 		rc = 3;
1603 		goto lpfc_handle_latt_free_mp;
1604 	}
1605 
1606 	/* Cleanup any outstanding ELS commands */
1607 	lpfc_els_flush_all_cmd(phba);
1608 
1609 	psli->slistat.link_event++;
1610 	lpfc_read_topology(phba, pmb, mp);
1611 	pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
1612 	pmb->vport = vport;
1613 	/* Block ELS IOCBs until we have processed this mbox command */
1614 	phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
1615 	rc = lpfc_sli_issue_mbox (phba, pmb, MBX_NOWAIT);
1616 	if (rc == MBX_NOT_FINISHED) {
1617 		rc = 4;
1618 		goto lpfc_handle_latt_free_mbuf;
1619 	}
1620 
1621 	/* Clear Link Attention in HA REG */
1622 	spin_lock_irq(&phba->hbalock);
1623 	writel(HA_LATT, phba->HAregaddr);
1624 	readl(phba->HAregaddr); /* flush */
1625 	spin_unlock_irq(&phba->hbalock);
1626 
1627 	return;
1628 
1629 lpfc_handle_latt_free_mbuf:
1630 	phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1631 	lpfc_mbuf_free(phba, mp->virt, mp->phys);
1632 lpfc_handle_latt_free_mp:
1633 	kfree(mp);
1634 lpfc_handle_latt_free_pmb:
1635 	mempool_free(pmb, phba->mbox_mem_pool);
1636 lpfc_handle_latt_err_exit:
1637 	/* Enable Link attention interrupts */
1638 	spin_lock_irq(&phba->hbalock);
1639 	psli->sli_flag |= LPFC_PROCESS_LA;
1640 	control = readl(phba->HCregaddr);
1641 	control |= HC_LAINT_ENA;
1642 	writel(control, phba->HCregaddr);
1643 	readl(phba->HCregaddr); /* flush */
1644 
1645 	/* Clear Link Attention in HA REG */
1646 	writel(HA_LATT, phba->HAregaddr);
1647 	readl(phba->HAregaddr); /* flush */
1648 	spin_unlock_irq(&phba->hbalock);
1649 	lpfc_linkdown(phba);
1650 	phba->link_state = LPFC_HBA_ERROR;
1651 
1652 	lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1653 		     "0300 LATT: Cannot issue READ_LA: Data:%d\n", rc);
1654 
1655 	return;
1656 }
1657 
1658 /**
1659  * lpfc_parse_vpd - Parse VPD (Vital Product Data)
1660  * @phba: pointer to lpfc hba data structure.
1661  * @vpd: pointer to the vital product data.
1662  * @len: length of the vital product data in bytes.
1663  *
1664  * This routine parses the Vital Product Data (VPD). The VPD is treated as
1665  * an array of characters. In this routine, the ModelName, ProgramType, and
1666  * ModelDesc, etc. fields of the phba data structure will be populated.
1667  *
1668  * Return codes
1669  *   0 - pointer to the VPD passed in is NULL
1670  *   1 - success
1671  **/
1672 int
lpfc_parse_vpd(struct lpfc_hba * phba,uint8_t * vpd,int len)1673 lpfc_parse_vpd(struct lpfc_hba *phba, uint8_t *vpd, int len)
1674 {
1675 	uint8_t lenlo, lenhi;
1676 	int Length;
1677 	int i, j;
1678 	int finished = 0;
1679 	int index = 0;
1680 
1681 	if (!vpd)
1682 		return 0;
1683 
1684 	/* Vital Product */
1685 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
1686 			"0455 Vital Product Data: x%x x%x x%x x%x\n",
1687 			(uint32_t) vpd[0], (uint32_t) vpd[1], (uint32_t) vpd[2],
1688 			(uint32_t) vpd[3]);
1689 	while (!finished && (index < (len - 4))) {
1690 		switch (vpd[index]) {
1691 		case 0x82:
1692 		case 0x91:
1693 			index += 1;
1694 			lenlo = vpd[index];
1695 			index += 1;
1696 			lenhi = vpd[index];
1697 			index += 1;
1698 			i = ((((unsigned short)lenhi) << 8) + lenlo);
1699 			index += i;
1700 			break;
1701 		case 0x90:
1702 			index += 1;
1703 			lenlo = vpd[index];
1704 			index += 1;
1705 			lenhi = vpd[index];
1706 			index += 1;
1707 			Length = ((((unsigned short)lenhi) << 8) + lenlo);
1708 			if (Length > len - index)
1709 				Length = len - index;
1710 			while (Length > 0) {
1711 			/* Look for Serial Number */
1712 			if ((vpd[index] == 'S') && (vpd[index+1] == 'N')) {
1713 				index += 2;
1714 				i = vpd[index];
1715 				index += 1;
1716 				j = 0;
1717 				Length -= (3+i);
1718 				while(i--) {
1719 					phba->SerialNumber[j++] = vpd[index++];
1720 					if (j == 31)
1721 						break;
1722 				}
1723 				phba->SerialNumber[j] = 0;
1724 				continue;
1725 			}
1726 			else if ((vpd[index] == 'V') && (vpd[index+1] == '1')) {
1727 				phba->vpd_flag |= VPD_MODEL_DESC;
1728 				index += 2;
1729 				i = vpd[index];
1730 				index += 1;
1731 				j = 0;
1732 				Length -= (3+i);
1733 				while(i--) {
1734 					phba->ModelDesc[j++] = vpd[index++];
1735 					if (j == 255)
1736 						break;
1737 				}
1738 				phba->ModelDesc[j] = 0;
1739 				continue;
1740 			}
1741 			else if ((vpd[index] == 'V') && (vpd[index+1] == '2')) {
1742 				phba->vpd_flag |= VPD_MODEL_NAME;
1743 				index += 2;
1744 				i = vpd[index];
1745 				index += 1;
1746 				j = 0;
1747 				Length -= (3+i);
1748 				while(i--) {
1749 					phba->ModelName[j++] = vpd[index++];
1750 					if (j == 79)
1751 						break;
1752 				}
1753 				phba->ModelName[j] = 0;
1754 				continue;
1755 			}
1756 			else if ((vpd[index] == 'V') && (vpd[index+1] == '3')) {
1757 				phba->vpd_flag |= VPD_PROGRAM_TYPE;
1758 				index += 2;
1759 				i = vpd[index];
1760 				index += 1;
1761 				j = 0;
1762 				Length -= (3+i);
1763 				while(i--) {
1764 					phba->ProgramType[j++] = vpd[index++];
1765 					if (j == 255)
1766 						break;
1767 				}
1768 				phba->ProgramType[j] = 0;
1769 				continue;
1770 			}
1771 			else if ((vpd[index] == 'V') && (vpd[index+1] == '4')) {
1772 				phba->vpd_flag |= VPD_PORT;
1773 				index += 2;
1774 				i = vpd[index];
1775 				index += 1;
1776 				j = 0;
1777 				Length -= (3+i);
1778 				while(i--) {
1779 					if ((phba->sli_rev == LPFC_SLI_REV4) &&
1780 					    (phba->sli4_hba.pport_name_sta ==
1781 					     LPFC_SLI4_PPNAME_GET)) {
1782 						j++;
1783 						index++;
1784 					} else
1785 						phba->Port[j++] = vpd[index++];
1786 					if (j == 19)
1787 						break;
1788 				}
1789 				if ((phba->sli_rev != LPFC_SLI_REV4) ||
1790 				    (phba->sli4_hba.pport_name_sta ==
1791 				     LPFC_SLI4_PPNAME_NON))
1792 					phba->Port[j] = 0;
1793 				continue;
1794 			}
1795 			else {
1796 				index += 2;
1797 				i = vpd[index];
1798 				index += 1;
1799 				index += i;
1800 				Length -= (3 + i);
1801 			}
1802 		}
1803 		finished = 0;
1804 		break;
1805 		case 0x78:
1806 			finished = 1;
1807 			break;
1808 		default:
1809 			index ++;
1810 			break;
1811 		}
1812 	}
1813 
1814 	return(1);
1815 }
1816 
1817 /**
1818  * lpfc_get_hba_model_desc - Retrieve HBA device model name and description
1819  * @phba: pointer to lpfc hba data structure.
1820  * @mdp: pointer to the data structure to hold the derived model name.
1821  * @descp: pointer to the data structure to hold the derived description.
1822  *
1823  * This routine retrieves HBA's description based on its registered PCI device
1824  * ID. The @descp passed into this function points to an array of 256 chars. It
1825  * shall be returned with the model name, maximum speed, and the host bus type.
1826  * The @mdp passed into this function points to an array of 80 chars. When the
1827  * function returns, the @mdp will be filled with the model name.
1828  **/
1829 static void
lpfc_get_hba_model_desc(struct lpfc_hba * phba,uint8_t * mdp,uint8_t * descp)1830 lpfc_get_hba_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp)
1831 {
1832 	lpfc_vpd_t *vp;
1833 	uint16_t dev_id = phba->pcidev->device;
1834 	int max_speed;
1835 	int GE = 0;
1836 	int oneConnect = 0; /* default is not a oneConnect */
1837 	struct {
1838 		char *name;
1839 		char *bus;
1840 		char *function;
1841 	} m = {"<Unknown>", "", ""};
1842 
1843 	if (mdp && mdp[0] != '\0'
1844 		&& descp && descp[0] != '\0')
1845 		return;
1846 
1847 	if (phba->lmt & LMT_16Gb)
1848 		max_speed = 16;
1849 	else if (phba->lmt & LMT_10Gb)
1850 		max_speed = 10;
1851 	else if (phba->lmt & LMT_8Gb)
1852 		max_speed = 8;
1853 	else if (phba->lmt & LMT_4Gb)
1854 		max_speed = 4;
1855 	else if (phba->lmt & LMT_2Gb)
1856 		max_speed = 2;
1857 	else
1858 		max_speed = 1;
1859 
1860 	vp = &phba->vpd;
1861 
1862 	switch (dev_id) {
1863 	case PCI_DEVICE_ID_FIREFLY:
1864 		m = (typeof(m)){"LP6000", "PCI", "Fibre Channel Adapter"};
1865 		break;
1866 	case PCI_DEVICE_ID_SUPERFLY:
1867 		if (vp->rev.biuRev >= 1 && vp->rev.biuRev <= 3)
1868 			m = (typeof(m)){"LP7000", "PCI",
1869 					"Fibre Channel Adapter"};
1870 		else
1871 			m = (typeof(m)){"LP7000E", "PCI",
1872 					"Fibre Channel Adapter"};
1873 		break;
1874 	case PCI_DEVICE_ID_DRAGONFLY:
1875 		m = (typeof(m)){"LP8000", "PCI",
1876 				"Fibre Channel Adapter"};
1877 		break;
1878 	case PCI_DEVICE_ID_CENTAUR:
1879 		if (FC_JEDEC_ID(vp->rev.biuRev) == CENTAUR_2G_JEDEC_ID)
1880 			m = (typeof(m)){"LP9002", "PCI",
1881 					"Fibre Channel Adapter"};
1882 		else
1883 			m = (typeof(m)){"LP9000", "PCI",
1884 					"Fibre Channel Adapter"};
1885 		break;
1886 	case PCI_DEVICE_ID_RFLY:
1887 		m = (typeof(m)){"LP952", "PCI",
1888 				"Fibre Channel Adapter"};
1889 		break;
1890 	case PCI_DEVICE_ID_PEGASUS:
1891 		m = (typeof(m)){"LP9802", "PCI-X",
1892 				"Fibre Channel Adapter"};
1893 		break;
1894 	case PCI_DEVICE_ID_THOR:
1895 		m = (typeof(m)){"LP10000", "PCI-X",
1896 				"Fibre Channel Adapter"};
1897 		break;
1898 	case PCI_DEVICE_ID_VIPER:
1899 		m = (typeof(m)){"LPX1000",  "PCI-X",
1900 				"Fibre Channel Adapter"};
1901 		break;
1902 	case PCI_DEVICE_ID_PFLY:
1903 		m = (typeof(m)){"LP982", "PCI-X",
1904 				"Fibre Channel Adapter"};
1905 		break;
1906 	case PCI_DEVICE_ID_TFLY:
1907 		m = (typeof(m)){"LP1050", "PCI-X",
1908 				"Fibre Channel Adapter"};
1909 		break;
1910 	case PCI_DEVICE_ID_HELIOS:
1911 		m = (typeof(m)){"LP11000", "PCI-X2",
1912 				"Fibre Channel Adapter"};
1913 		break;
1914 	case PCI_DEVICE_ID_HELIOS_SCSP:
1915 		m = (typeof(m)){"LP11000-SP", "PCI-X2",
1916 				"Fibre Channel Adapter"};
1917 		break;
1918 	case PCI_DEVICE_ID_HELIOS_DCSP:
1919 		m = (typeof(m)){"LP11002-SP",  "PCI-X2",
1920 				"Fibre Channel Adapter"};
1921 		break;
1922 	case PCI_DEVICE_ID_NEPTUNE:
1923 		m = (typeof(m)){"LPe1000", "PCIe", "Fibre Channel Adapter"};
1924 		break;
1925 	case PCI_DEVICE_ID_NEPTUNE_SCSP:
1926 		m = (typeof(m)){"LPe1000-SP", "PCIe", "Fibre Channel Adapter"};
1927 		break;
1928 	case PCI_DEVICE_ID_NEPTUNE_DCSP:
1929 		m = (typeof(m)){"LPe1002-SP", "PCIe", "Fibre Channel Adapter"};
1930 		break;
1931 	case PCI_DEVICE_ID_BMID:
1932 		m = (typeof(m)){"LP1150", "PCI-X2", "Fibre Channel Adapter"};
1933 		break;
1934 	case PCI_DEVICE_ID_BSMB:
1935 		m = (typeof(m)){"LP111", "PCI-X2", "Fibre Channel Adapter"};
1936 		break;
1937 	case PCI_DEVICE_ID_ZEPHYR:
1938 		m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
1939 		break;
1940 	case PCI_DEVICE_ID_ZEPHYR_SCSP:
1941 		m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
1942 		break;
1943 	case PCI_DEVICE_ID_ZEPHYR_DCSP:
1944 		m = (typeof(m)){"LP2105", "PCIe", "FCoE Adapter"};
1945 		GE = 1;
1946 		break;
1947 	case PCI_DEVICE_ID_ZMID:
1948 		m = (typeof(m)){"LPe1150", "PCIe", "Fibre Channel Adapter"};
1949 		break;
1950 	case PCI_DEVICE_ID_ZSMB:
1951 		m = (typeof(m)){"LPe111", "PCIe", "Fibre Channel Adapter"};
1952 		break;
1953 	case PCI_DEVICE_ID_LP101:
1954 		m = (typeof(m)){"LP101", "PCI-X", "Fibre Channel Adapter"};
1955 		break;
1956 	case PCI_DEVICE_ID_LP10000S:
1957 		m = (typeof(m)){"LP10000-S", "PCI", "Fibre Channel Adapter"};
1958 		break;
1959 	case PCI_DEVICE_ID_LP11000S:
1960 		m = (typeof(m)){"LP11000-S", "PCI-X2", "Fibre Channel Adapter"};
1961 		break;
1962 	case PCI_DEVICE_ID_LPE11000S:
1963 		m = (typeof(m)){"LPe11000-S", "PCIe", "Fibre Channel Adapter"};
1964 		break;
1965 	case PCI_DEVICE_ID_SAT:
1966 		m = (typeof(m)){"LPe12000", "PCIe", "Fibre Channel Adapter"};
1967 		break;
1968 	case PCI_DEVICE_ID_SAT_MID:
1969 		m = (typeof(m)){"LPe1250", "PCIe", "Fibre Channel Adapter"};
1970 		break;
1971 	case PCI_DEVICE_ID_SAT_SMB:
1972 		m = (typeof(m)){"LPe121", "PCIe", "Fibre Channel Adapter"};
1973 		break;
1974 	case PCI_DEVICE_ID_SAT_DCSP:
1975 		m = (typeof(m)){"LPe12002-SP", "PCIe", "Fibre Channel Adapter"};
1976 		break;
1977 	case PCI_DEVICE_ID_SAT_SCSP:
1978 		m = (typeof(m)){"LPe12000-SP", "PCIe", "Fibre Channel Adapter"};
1979 		break;
1980 	case PCI_DEVICE_ID_SAT_S:
1981 		m = (typeof(m)){"LPe12000-S", "PCIe", "Fibre Channel Adapter"};
1982 		break;
1983 	case PCI_DEVICE_ID_HORNET:
1984 		m = (typeof(m)){"LP21000", "PCIe", "FCoE Adapter"};
1985 		GE = 1;
1986 		break;
1987 	case PCI_DEVICE_ID_PROTEUS_VF:
1988 		m = (typeof(m)){"LPev12000", "PCIe IOV",
1989 				"Fibre Channel Adapter"};
1990 		break;
1991 	case PCI_DEVICE_ID_PROTEUS_PF:
1992 		m = (typeof(m)){"LPev12000", "PCIe IOV",
1993 				"Fibre Channel Adapter"};
1994 		break;
1995 	case PCI_DEVICE_ID_PROTEUS_S:
1996 		m = (typeof(m)){"LPemv12002-S", "PCIe IOV",
1997 				"Fibre Channel Adapter"};
1998 		break;
1999 	case PCI_DEVICE_ID_TIGERSHARK:
2000 		oneConnect = 1;
2001 		m = (typeof(m)){"OCe10100", "PCIe", "FCoE"};
2002 		break;
2003 	case PCI_DEVICE_ID_TOMCAT:
2004 		oneConnect = 1;
2005 		m = (typeof(m)){"OCe11100", "PCIe", "FCoE"};
2006 		break;
2007 	case PCI_DEVICE_ID_FALCON:
2008 		m = (typeof(m)){"LPSe12002-ML1-E", "PCIe",
2009 				"EmulexSecure Fibre"};
2010 		break;
2011 	case PCI_DEVICE_ID_BALIUS:
2012 		m = (typeof(m)){"LPVe12002", "PCIe Shared I/O",
2013 				"Fibre Channel Adapter"};
2014 		break;
2015 	case PCI_DEVICE_ID_LANCER_FC:
2016 	case PCI_DEVICE_ID_LANCER_FC_VF:
2017 		m = (typeof(m)){"LPe16000", "PCIe", "Fibre Channel Adapter"};
2018 		break;
2019 	case PCI_DEVICE_ID_LANCER_FCOE:
2020 	case PCI_DEVICE_ID_LANCER_FCOE_VF:
2021 		oneConnect = 1;
2022 		m = (typeof(m)){"OCe15100", "PCIe", "FCoE"};
2023 		break;
2024 	default:
2025 		m = (typeof(m)){"Unknown", "", ""};
2026 		break;
2027 	}
2028 
2029 	if (mdp && mdp[0] == '\0')
2030 		snprintf(mdp, 79,"%s", m.name);
2031 	/*
2032 	 * oneConnect hba requires special processing, they are all initiators
2033 	 * and we put the port number on the end
2034 	 */
2035 	if (descp && descp[0] == '\0') {
2036 		if (oneConnect)
2037 			snprintf(descp, 255,
2038 				"Emulex OneConnect %s, %s Initiator, Port %s",
2039 				m.name, m.function,
2040 				phba->Port);
2041 		else
2042 			snprintf(descp, 255,
2043 				"Emulex %s %d%s %s %s",
2044 				m.name, max_speed, (GE) ? "GE" : "Gb",
2045 				m.bus, m.function);
2046 	}
2047 }
2048 
2049 /**
2050  * lpfc_post_buffer - Post IOCB(s) with DMA buffer descriptor(s) to a IOCB ring
2051  * @phba: pointer to lpfc hba data structure.
2052  * @pring: pointer to a IOCB ring.
2053  * @cnt: the number of IOCBs to be posted to the IOCB ring.
2054  *
2055  * This routine posts a given number of IOCBs with the associated DMA buffer
2056  * descriptors specified by the cnt argument to the given IOCB ring.
2057  *
2058  * Return codes
2059  *   The number of IOCBs NOT able to be posted to the IOCB ring.
2060  **/
2061 int
lpfc_post_buffer(struct lpfc_hba * phba,struct lpfc_sli_ring * pring,int cnt)2062 lpfc_post_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, int cnt)
2063 {
2064 	IOCB_t *icmd;
2065 	struct lpfc_iocbq *iocb;
2066 	struct lpfc_dmabuf *mp1, *mp2;
2067 
2068 	cnt += pring->missbufcnt;
2069 
2070 	/* While there are buffers to post */
2071 	while (cnt > 0) {
2072 		/* Allocate buffer for  command iocb */
2073 		iocb = lpfc_sli_get_iocbq(phba);
2074 		if (iocb == NULL) {
2075 			pring->missbufcnt = cnt;
2076 			return cnt;
2077 		}
2078 		icmd = &iocb->iocb;
2079 
2080 		/* 2 buffers can be posted per command */
2081 		/* Allocate buffer to post */
2082 		mp1 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2083 		if (mp1)
2084 		    mp1->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &mp1->phys);
2085 		if (!mp1 || !mp1->virt) {
2086 			kfree(mp1);
2087 			lpfc_sli_release_iocbq(phba, iocb);
2088 			pring->missbufcnt = cnt;
2089 			return cnt;
2090 		}
2091 
2092 		INIT_LIST_HEAD(&mp1->list);
2093 		/* Allocate buffer to post */
2094 		if (cnt > 1) {
2095 			mp2 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2096 			if (mp2)
2097 				mp2->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
2098 							    &mp2->phys);
2099 			if (!mp2 || !mp2->virt) {
2100 				kfree(mp2);
2101 				lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2102 				kfree(mp1);
2103 				lpfc_sli_release_iocbq(phba, iocb);
2104 				pring->missbufcnt = cnt;
2105 				return cnt;
2106 			}
2107 
2108 			INIT_LIST_HEAD(&mp2->list);
2109 		} else {
2110 			mp2 = NULL;
2111 		}
2112 
2113 		icmd->un.cont64[0].addrHigh = putPaddrHigh(mp1->phys);
2114 		icmd->un.cont64[0].addrLow = putPaddrLow(mp1->phys);
2115 		icmd->un.cont64[0].tus.f.bdeSize = FCELSSIZE;
2116 		icmd->ulpBdeCount = 1;
2117 		cnt--;
2118 		if (mp2) {
2119 			icmd->un.cont64[1].addrHigh = putPaddrHigh(mp2->phys);
2120 			icmd->un.cont64[1].addrLow = putPaddrLow(mp2->phys);
2121 			icmd->un.cont64[1].tus.f.bdeSize = FCELSSIZE;
2122 			cnt--;
2123 			icmd->ulpBdeCount = 2;
2124 		}
2125 
2126 		icmd->ulpCommand = CMD_QUE_RING_BUF64_CN;
2127 		icmd->ulpLe = 1;
2128 
2129 		if (lpfc_sli_issue_iocb(phba, pring->ringno, iocb, 0) ==
2130 		    IOCB_ERROR) {
2131 			lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2132 			kfree(mp1);
2133 			cnt++;
2134 			if (mp2) {
2135 				lpfc_mbuf_free(phba, mp2->virt, mp2->phys);
2136 				kfree(mp2);
2137 				cnt++;
2138 			}
2139 			lpfc_sli_release_iocbq(phba, iocb);
2140 			pring->missbufcnt = cnt;
2141 			return cnt;
2142 		}
2143 		lpfc_sli_ringpostbuf_put(phba, pring, mp1);
2144 		if (mp2)
2145 			lpfc_sli_ringpostbuf_put(phba, pring, mp2);
2146 	}
2147 	pring->missbufcnt = 0;
2148 	return 0;
2149 }
2150 
2151 /**
2152  * lpfc_post_rcv_buf - Post the initial receive IOCB buffers to ELS ring
2153  * @phba: pointer to lpfc hba data structure.
2154  *
2155  * This routine posts initial receive IOCB buffers to the ELS ring. The
2156  * current number of initial IOCB buffers specified by LPFC_BUF_RING0 is
2157  * set to 64 IOCBs.
2158  *
2159  * Return codes
2160  *   0 - success (currently always success)
2161  **/
2162 static int
lpfc_post_rcv_buf(struct lpfc_hba * phba)2163 lpfc_post_rcv_buf(struct lpfc_hba *phba)
2164 {
2165 	struct lpfc_sli *psli = &phba->sli;
2166 
2167 	/* Ring 0, ELS / CT buffers */
2168 	lpfc_post_buffer(phba, &psli->ring[LPFC_ELS_RING], LPFC_BUF_RING0);
2169 	/* Ring 2 - FCP no buffers needed */
2170 
2171 	return 0;
2172 }
2173 
2174 #define S(N,V) (((V)<<(N))|((V)>>(32-(N))))
2175 
2176 /**
2177  * lpfc_sha_init - Set up initial array of hash table entries
2178  * @HashResultPointer: pointer to an array as hash table.
2179  *
2180  * This routine sets up the initial values to the array of hash table entries
2181  * for the LC HBAs.
2182  **/
2183 static void
lpfc_sha_init(uint32_t * HashResultPointer)2184 lpfc_sha_init(uint32_t * HashResultPointer)
2185 {
2186 	HashResultPointer[0] = 0x67452301;
2187 	HashResultPointer[1] = 0xEFCDAB89;
2188 	HashResultPointer[2] = 0x98BADCFE;
2189 	HashResultPointer[3] = 0x10325476;
2190 	HashResultPointer[4] = 0xC3D2E1F0;
2191 }
2192 
2193 /**
2194  * lpfc_sha_iterate - Iterate initial hash table with the working hash table
2195  * @HashResultPointer: pointer to an initial/result hash table.
2196  * @HashWorkingPointer: pointer to an working hash table.
2197  *
2198  * This routine iterates an initial hash table pointed by @HashResultPointer
2199  * with the values from the working hash table pointeed by @HashWorkingPointer.
2200  * The results are putting back to the initial hash table, returned through
2201  * the @HashResultPointer as the result hash table.
2202  **/
2203 static void
lpfc_sha_iterate(uint32_t * HashResultPointer,uint32_t * HashWorkingPointer)2204 lpfc_sha_iterate(uint32_t * HashResultPointer, uint32_t * HashWorkingPointer)
2205 {
2206 	int t;
2207 	uint32_t TEMP;
2208 	uint32_t A, B, C, D, E;
2209 	t = 16;
2210 	do {
2211 		HashWorkingPointer[t] =
2212 		    S(1,
2213 		      HashWorkingPointer[t - 3] ^ HashWorkingPointer[t -
2214 								     8] ^
2215 		      HashWorkingPointer[t - 14] ^ HashWorkingPointer[t - 16]);
2216 	} while (++t <= 79);
2217 	t = 0;
2218 	A = HashResultPointer[0];
2219 	B = HashResultPointer[1];
2220 	C = HashResultPointer[2];
2221 	D = HashResultPointer[3];
2222 	E = HashResultPointer[4];
2223 
2224 	do {
2225 		if (t < 20) {
2226 			TEMP = ((B & C) | ((~B) & D)) + 0x5A827999;
2227 		} else if (t < 40) {
2228 			TEMP = (B ^ C ^ D) + 0x6ED9EBA1;
2229 		} else if (t < 60) {
2230 			TEMP = ((B & C) | (B & D) | (C & D)) + 0x8F1BBCDC;
2231 		} else {
2232 			TEMP = (B ^ C ^ D) + 0xCA62C1D6;
2233 		}
2234 		TEMP += S(5, A) + E + HashWorkingPointer[t];
2235 		E = D;
2236 		D = C;
2237 		C = S(30, B);
2238 		B = A;
2239 		A = TEMP;
2240 	} while (++t <= 79);
2241 
2242 	HashResultPointer[0] += A;
2243 	HashResultPointer[1] += B;
2244 	HashResultPointer[2] += C;
2245 	HashResultPointer[3] += D;
2246 	HashResultPointer[4] += E;
2247 
2248 }
2249 
2250 /**
2251  * lpfc_challenge_key - Create challenge key based on WWPN of the HBA
2252  * @RandomChallenge: pointer to the entry of host challenge random number array.
2253  * @HashWorking: pointer to the entry of the working hash array.
2254  *
2255  * This routine calculates the working hash array referred by @HashWorking
2256  * from the challenge random numbers associated with the host, referred by
2257  * @RandomChallenge. The result is put into the entry of the working hash
2258  * array and returned by reference through @HashWorking.
2259  **/
2260 static void
lpfc_challenge_key(uint32_t * RandomChallenge,uint32_t * HashWorking)2261 lpfc_challenge_key(uint32_t * RandomChallenge, uint32_t * HashWorking)
2262 {
2263 	*HashWorking = (*RandomChallenge ^ *HashWorking);
2264 }
2265 
2266 /**
2267  * lpfc_hba_init - Perform special handling for LC HBA initialization
2268  * @phba: pointer to lpfc hba data structure.
2269  * @hbainit: pointer to an array of unsigned 32-bit integers.
2270  *
2271  * This routine performs the special handling for LC HBA initialization.
2272  **/
2273 void
lpfc_hba_init(struct lpfc_hba * phba,uint32_t * hbainit)2274 lpfc_hba_init(struct lpfc_hba *phba, uint32_t *hbainit)
2275 {
2276 	int t;
2277 	uint32_t *HashWorking;
2278 	uint32_t *pwwnn = (uint32_t *) phba->wwnn;
2279 
2280 	HashWorking = kcalloc(80, sizeof(uint32_t), GFP_KERNEL);
2281 	if (!HashWorking)
2282 		return;
2283 
2284 	HashWorking[0] = HashWorking[78] = *pwwnn++;
2285 	HashWorking[1] = HashWorking[79] = *pwwnn;
2286 
2287 	for (t = 0; t < 7; t++)
2288 		lpfc_challenge_key(phba->RandomData + t, HashWorking + t);
2289 
2290 	lpfc_sha_init(hbainit);
2291 	lpfc_sha_iterate(hbainit, HashWorking);
2292 	kfree(HashWorking);
2293 }
2294 
2295 /**
2296  * lpfc_cleanup - Performs vport cleanups before deleting a vport
2297  * @vport: pointer to a virtual N_Port data structure.
2298  *
2299  * This routine performs the necessary cleanups before deleting the @vport.
2300  * It invokes the discovery state machine to perform necessary state
2301  * transitions and to release the ndlps associated with the @vport. Note,
2302  * the physical port is treated as @vport 0.
2303  **/
2304 void
lpfc_cleanup(struct lpfc_vport * vport)2305 lpfc_cleanup(struct lpfc_vport *vport)
2306 {
2307 	struct lpfc_hba   *phba = vport->phba;
2308 	struct lpfc_nodelist *ndlp, *next_ndlp;
2309 	int i = 0;
2310 
2311 	if (phba->link_state > LPFC_LINK_DOWN)
2312 		lpfc_port_link_failure(vport);
2313 
2314 	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
2315 		if (!NLP_CHK_NODE_ACT(ndlp)) {
2316 			ndlp = lpfc_enable_node(vport, ndlp,
2317 						NLP_STE_UNUSED_NODE);
2318 			if (!ndlp)
2319 				continue;
2320 			spin_lock_irq(&phba->ndlp_lock);
2321 			NLP_SET_FREE_REQ(ndlp);
2322 			spin_unlock_irq(&phba->ndlp_lock);
2323 			/* Trigger the release of the ndlp memory */
2324 			lpfc_nlp_put(ndlp);
2325 			continue;
2326 		}
2327 		spin_lock_irq(&phba->ndlp_lock);
2328 		if (NLP_CHK_FREE_REQ(ndlp)) {
2329 			/* The ndlp should not be in memory free mode already */
2330 			spin_unlock_irq(&phba->ndlp_lock);
2331 			continue;
2332 		} else
2333 			/* Indicate request for freeing ndlp memory */
2334 			NLP_SET_FREE_REQ(ndlp);
2335 		spin_unlock_irq(&phba->ndlp_lock);
2336 
2337 		if (vport->port_type != LPFC_PHYSICAL_PORT &&
2338 		    ndlp->nlp_DID == Fabric_DID) {
2339 			/* Just free up ndlp with Fabric_DID for vports */
2340 			lpfc_nlp_put(ndlp);
2341 			continue;
2342 		}
2343 
2344 		/* take care of nodes in unused state before the state
2345 		 * machine taking action.
2346 		 */
2347 		if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
2348 			lpfc_nlp_put(ndlp);
2349 			continue;
2350 		}
2351 
2352 		if (ndlp->nlp_type & NLP_FABRIC)
2353 			lpfc_disc_state_machine(vport, ndlp, NULL,
2354 					NLP_EVT_DEVICE_RECOVERY);
2355 
2356 		lpfc_disc_state_machine(vport, ndlp, NULL,
2357 					     NLP_EVT_DEVICE_RM);
2358 	}
2359 
2360 	/* At this point, ALL ndlp's should be gone
2361 	 * because of the previous NLP_EVT_DEVICE_RM.
2362 	 * Lets wait for this to happen, if needed.
2363 	 */
2364 	while (!list_empty(&vport->fc_nodes)) {
2365 		if (i++ > 3000) {
2366 			lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2367 				"0233 Nodelist not empty\n");
2368 			list_for_each_entry_safe(ndlp, next_ndlp,
2369 						&vport->fc_nodes, nlp_listp) {
2370 				lpfc_printf_vlog(ndlp->vport, KERN_ERR,
2371 						LOG_NODE,
2372 						"0282 did:x%x ndlp:x%p "
2373 						"usgmap:x%x refcnt:%d\n",
2374 						ndlp->nlp_DID, (void *)ndlp,
2375 						ndlp->nlp_usg_map,
2376 						atomic_read(
2377 							&ndlp->kref.refcount));
2378 			}
2379 			break;
2380 		}
2381 
2382 		/* Wait for any activity on ndlps to settle */
2383 		msleep(10);
2384 	}
2385 	lpfc_cleanup_vports_rrqs(vport, NULL);
2386 }
2387 
2388 /**
2389  * lpfc_stop_vport_timers - Stop all the timers associated with a vport
2390  * @vport: pointer to a virtual N_Port data structure.
2391  *
2392  * This routine stops all the timers associated with a @vport. This function
2393  * is invoked before disabling or deleting a @vport. Note that the physical
2394  * port is treated as @vport 0.
2395  **/
2396 void
lpfc_stop_vport_timers(struct lpfc_vport * vport)2397 lpfc_stop_vport_timers(struct lpfc_vport *vport)
2398 {
2399 	del_timer_sync(&vport->els_tmofunc);
2400 	del_timer_sync(&vport->fc_fdmitmo);
2401 	del_timer_sync(&vport->delayed_disc_tmo);
2402 	lpfc_can_disctmo(vport);
2403 	return;
2404 }
2405 
2406 /**
2407  * __lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
2408  * @phba: pointer to lpfc hba data structure.
2409  *
2410  * This routine stops the SLI4 FCF rediscover wait timer if it's on. The
2411  * caller of this routine should already hold the host lock.
2412  **/
2413 void
__lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba * phba)2414 __lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
2415 {
2416 	/* Clear pending FCF rediscovery wait flag */
2417 	phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
2418 
2419 	/* Now, try to stop the timer */
2420 	del_timer(&phba->fcf.redisc_wait);
2421 }
2422 
2423 /**
2424  * lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
2425  * @phba: pointer to lpfc hba data structure.
2426  *
2427  * This routine stops the SLI4 FCF rediscover wait timer if it's on. It
2428  * checks whether the FCF rediscovery wait timer is pending with the host
2429  * lock held before proceeding with disabling the timer and clearing the
2430  * wait timer pendig flag.
2431  **/
2432 void
lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba * phba)2433 lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
2434 {
2435 	spin_lock_irq(&phba->hbalock);
2436 	if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
2437 		/* FCF rediscovery timer already fired or stopped */
2438 		spin_unlock_irq(&phba->hbalock);
2439 		return;
2440 	}
2441 	__lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
2442 	/* Clear failover in progress flags */
2443 	phba->fcf.fcf_flag &= ~(FCF_DEAD_DISC | FCF_ACVL_DISC);
2444 	spin_unlock_irq(&phba->hbalock);
2445 }
2446 
2447 /**
2448  * lpfc_stop_hba_timers - Stop all the timers associated with an HBA
2449  * @phba: pointer to lpfc hba data structure.
2450  *
2451  * This routine stops all the timers associated with a HBA. This function is
2452  * invoked before either putting a HBA offline or unloading the driver.
2453  **/
2454 void
lpfc_stop_hba_timers(struct lpfc_hba * phba)2455 lpfc_stop_hba_timers(struct lpfc_hba *phba)
2456 {
2457 	lpfc_stop_vport_timers(phba->pport);
2458 	del_timer_sync(&phba->sli.mbox_tmo);
2459 	del_timer_sync(&phba->fabric_block_timer);
2460 	del_timer_sync(&phba->eratt_poll);
2461 	del_timer_sync(&phba->hb_tmofunc);
2462 	if (phba->sli_rev == LPFC_SLI_REV4) {
2463 		del_timer_sync(&phba->rrq_tmr);
2464 		phba->hba_flag &= ~HBA_RRQ_ACTIVE;
2465 	}
2466 	phba->hb_outstanding = 0;
2467 
2468 	switch (phba->pci_dev_grp) {
2469 	case LPFC_PCI_DEV_LP:
2470 		/* Stop any LightPulse device specific driver timers */
2471 		del_timer_sync(&phba->fcp_poll_timer);
2472 		break;
2473 	case LPFC_PCI_DEV_OC:
2474 		/* Stop any OneConnect device sepcific driver timers */
2475 		lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
2476 		break;
2477 	default:
2478 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2479 				"0297 Invalid device group (x%x)\n",
2480 				phba->pci_dev_grp);
2481 		break;
2482 	}
2483 	return;
2484 }
2485 
2486 /**
2487  * lpfc_block_mgmt_io - Mark a HBA's management interface as blocked
2488  * @phba: pointer to lpfc hba data structure.
2489  *
2490  * This routine marks a HBA's management interface as blocked. Once the HBA's
2491  * management interface is marked as blocked, all the user space access to
2492  * the HBA, whether they are from sysfs interface or libdfc interface will
2493  * all be blocked. The HBA is set to block the management interface when the
2494  * driver prepares the HBA interface for online or offline.
2495  **/
2496 static void
lpfc_block_mgmt_io(struct lpfc_hba * phba)2497 lpfc_block_mgmt_io(struct lpfc_hba * phba)
2498 {
2499 	unsigned long iflag;
2500 	uint8_t actcmd = MBX_HEARTBEAT;
2501 	unsigned long timeout;
2502 
2503 	timeout = msecs_to_jiffies(LPFC_MBOX_TMO * 1000) + jiffies;
2504 	spin_lock_irqsave(&phba->hbalock, iflag);
2505 	phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO;
2506 	if (phba->sli.mbox_active) {
2507 		actcmd = phba->sli.mbox_active->u.mb.mbxCommand;
2508 		/* Determine how long we might wait for the active mailbox
2509 		 * command to be gracefully completed by firmware.
2510 		 */
2511 		timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba,
2512 				phba->sli.mbox_active) * 1000) + jiffies;
2513 	}
2514 	spin_unlock_irqrestore(&phba->hbalock, iflag);
2515 
2516 	/* Wait for the outstnading mailbox command to complete */
2517 	while (phba->sli.mbox_active) {
2518 		/* Check active mailbox complete status every 2ms */
2519 		msleep(2);
2520 		if (time_after(jiffies, timeout)) {
2521 			lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2522 				"2813 Mgmt IO is Blocked %x "
2523 				"- mbox cmd %x still active\n",
2524 				phba->sli.sli_flag, actcmd);
2525 			break;
2526 		}
2527 	}
2528 }
2529 
2530 /**
2531  * lpfc_sli4_node_prep - Assign RPIs for active nodes.
2532  * @phba: pointer to lpfc hba data structure.
2533  *
2534  * Allocate RPIs for all active remote nodes. This is needed whenever
2535  * an SLI4 adapter is reset and the driver is not unloading. Its purpose
2536  * is to fixup the temporary rpi assignments.
2537  **/
2538 void
lpfc_sli4_node_prep(struct lpfc_hba * phba)2539 lpfc_sli4_node_prep(struct lpfc_hba *phba)
2540 {
2541 	struct lpfc_nodelist  *ndlp, *next_ndlp;
2542 	struct lpfc_vport **vports;
2543 	int i;
2544 
2545 	if (phba->sli_rev != LPFC_SLI_REV4)
2546 		return;
2547 
2548 	vports = lpfc_create_vport_work_array(phba);
2549 	if (vports != NULL) {
2550 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2551 			if (vports[i]->load_flag & FC_UNLOADING)
2552 				continue;
2553 
2554 			list_for_each_entry_safe(ndlp, next_ndlp,
2555 						 &vports[i]->fc_nodes,
2556 						 nlp_listp) {
2557 				if (NLP_CHK_NODE_ACT(ndlp))
2558 					ndlp->nlp_rpi =
2559 						lpfc_sli4_alloc_rpi(phba);
2560 			}
2561 		}
2562 	}
2563 	lpfc_destroy_vport_work_array(phba, vports);
2564 }
2565 
2566 /**
2567  * lpfc_online - Initialize and bring a HBA online
2568  * @phba: pointer to lpfc hba data structure.
2569  *
2570  * This routine initializes the HBA and brings a HBA online. During this
2571  * process, the management interface is blocked to prevent user space access
2572  * to the HBA interfering with the driver initialization.
2573  *
2574  * Return codes
2575  *   0 - successful
2576  *   1 - failed
2577  **/
2578 int
lpfc_online(struct lpfc_hba * phba)2579 lpfc_online(struct lpfc_hba *phba)
2580 {
2581 	struct lpfc_vport *vport;
2582 	struct lpfc_vport **vports;
2583 	int i;
2584 
2585 	if (!phba)
2586 		return 0;
2587 	vport = phba->pport;
2588 
2589 	if (!(vport->fc_flag & FC_OFFLINE_MODE))
2590 		return 0;
2591 
2592 	lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2593 			"0458 Bring Adapter online\n");
2594 
2595 	lpfc_block_mgmt_io(phba);
2596 
2597 	if (!lpfc_sli_queue_setup(phba)) {
2598 		lpfc_unblock_mgmt_io(phba);
2599 		return 1;
2600 	}
2601 
2602 	if (phba->sli_rev == LPFC_SLI_REV4) {
2603 		if (lpfc_sli4_hba_setup(phba)) { /* Initialize SLI4 HBA */
2604 			lpfc_unblock_mgmt_io(phba);
2605 			return 1;
2606 		}
2607 	} else {
2608 		if (lpfc_sli_hba_setup(phba)) {	/* Initialize SLI2/SLI3 HBA */
2609 			lpfc_unblock_mgmt_io(phba);
2610 			return 1;
2611 		}
2612 	}
2613 
2614 	vports = lpfc_create_vport_work_array(phba);
2615 	if (vports != NULL)
2616 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2617 			struct Scsi_Host *shost;
2618 			shost = lpfc_shost_from_vport(vports[i]);
2619 			spin_lock_irq(shost->host_lock);
2620 			vports[i]->fc_flag &= ~FC_OFFLINE_MODE;
2621 			if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2622 				vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
2623 			if (phba->sli_rev == LPFC_SLI_REV4)
2624 				vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
2625 			spin_unlock_irq(shost->host_lock);
2626 		}
2627 		lpfc_destroy_vport_work_array(phba, vports);
2628 
2629 	lpfc_unblock_mgmt_io(phba);
2630 	return 0;
2631 }
2632 
2633 /**
2634  * lpfc_unblock_mgmt_io - Mark a HBA's management interface to be not blocked
2635  * @phba: pointer to lpfc hba data structure.
2636  *
2637  * This routine marks a HBA's management interface as not blocked. Once the
2638  * HBA's management interface is marked as not blocked, all the user space
2639  * access to the HBA, whether they are from sysfs interface or libdfc
2640  * interface will be allowed. The HBA is set to block the management interface
2641  * when the driver prepares the HBA interface for online or offline and then
2642  * set to unblock the management interface afterwards.
2643  **/
2644 void
lpfc_unblock_mgmt_io(struct lpfc_hba * phba)2645 lpfc_unblock_mgmt_io(struct lpfc_hba * phba)
2646 {
2647 	unsigned long iflag;
2648 
2649 	spin_lock_irqsave(&phba->hbalock, iflag);
2650 	phba->sli.sli_flag &= ~LPFC_BLOCK_MGMT_IO;
2651 	spin_unlock_irqrestore(&phba->hbalock, iflag);
2652 }
2653 
2654 /**
2655  * lpfc_offline_prep - Prepare a HBA to be brought offline
2656  * @phba: pointer to lpfc hba data structure.
2657  *
2658  * This routine is invoked to prepare a HBA to be brought offline. It performs
2659  * unregistration login to all the nodes on all vports and flushes the mailbox
2660  * queue to make it ready to be brought offline.
2661  **/
2662 void
lpfc_offline_prep(struct lpfc_hba * phba)2663 lpfc_offline_prep(struct lpfc_hba * phba)
2664 {
2665 	struct lpfc_vport *vport = phba->pport;
2666 	struct lpfc_nodelist  *ndlp, *next_ndlp;
2667 	struct lpfc_vport **vports;
2668 	struct Scsi_Host *shost;
2669 	int i;
2670 
2671 	if (vport->fc_flag & FC_OFFLINE_MODE)
2672 		return;
2673 
2674 	lpfc_block_mgmt_io(phba);
2675 
2676 	lpfc_linkdown(phba);
2677 
2678 	/* Issue an unreg_login to all nodes on all vports */
2679 	vports = lpfc_create_vport_work_array(phba);
2680 	if (vports != NULL) {
2681 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2682 			if (vports[i]->load_flag & FC_UNLOADING)
2683 				continue;
2684 			shost = lpfc_shost_from_vport(vports[i]);
2685 			spin_lock_irq(shost->host_lock);
2686 			vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
2687 			vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
2688 			vports[i]->fc_flag &= ~FC_VFI_REGISTERED;
2689 			spin_unlock_irq(shost->host_lock);
2690 
2691 			shost =	lpfc_shost_from_vport(vports[i]);
2692 			list_for_each_entry_safe(ndlp, next_ndlp,
2693 						 &vports[i]->fc_nodes,
2694 						 nlp_listp) {
2695 				if (!NLP_CHK_NODE_ACT(ndlp))
2696 					continue;
2697 				if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
2698 					continue;
2699 				if (ndlp->nlp_type & NLP_FABRIC) {
2700 					lpfc_disc_state_machine(vports[i], ndlp,
2701 						NULL, NLP_EVT_DEVICE_RECOVERY);
2702 					lpfc_disc_state_machine(vports[i], ndlp,
2703 						NULL, NLP_EVT_DEVICE_RM);
2704 				}
2705 				spin_lock_irq(shost->host_lock);
2706 				ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2707 				spin_unlock_irq(shost->host_lock);
2708 				/*
2709 				 * Whenever an SLI4 port goes offline, free the
2710 				 * RPI. Get a new RPI when the adapter port
2711 				 * comes back online.
2712 				 */
2713 				if (phba->sli_rev == LPFC_SLI_REV4)
2714 					lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi);
2715 				lpfc_unreg_rpi(vports[i], ndlp);
2716 			}
2717 		}
2718 	}
2719 	lpfc_destroy_vport_work_array(phba, vports);
2720 
2721 	lpfc_sli_mbox_sys_shutdown(phba);
2722 }
2723 
2724 /**
2725  * lpfc_offline - Bring a HBA offline
2726  * @phba: pointer to lpfc hba data structure.
2727  *
2728  * This routine actually brings a HBA offline. It stops all the timers
2729  * associated with the HBA, brings down the SLI layer, and eventually
2730  * marks the HBA as in offline state for the upper layer protocol.
2731  **/
2732 void
lpfc_offline(struct lpfc_hba * phba)2733 lpfc_offline(struct lpfc_hba *phba)
2734 {
2735 	struct Scsi_Host  *shost;
2736 	struct lpfc_vport **vports;
2737 	int i;
2738 
2739 	if (phba->pport->fc_flag & FC_OFFLINE_MODE)
2740 		return;
2741 
2742 	/* stop port and all timers associated with this hba */
2743 	lpfc_stop_port(phba);
2744 	vports = lpfc_create_vport_work_array(phba);
2745 	if (vports != NULL)
2746 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
2747 			lpfc_stop_vport_timers(vports[i]);
2748 	lpfc_destroy_vport_work_array(phba, vports);
2749 	lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2750 			"0460 Bring Adapter offline\n");
2751 	/* Bring down the SLI Layer and cleanup.  The HBA is offline
2752 	   now.  */
2753 	lpfc_sli_hba_down(phba);
2754 	spin_lock_irq(&phba->hbalock);
2755 	phba->work_ha = 0;
2756 	spin_unlock_irq(&phba->hbalock);
2757 	vports = lpfc_create_vport_work_array(phba);
2758 	if (vports != NULL)
2759 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2760 			shost = lpfc_shost_from_vport(vports[i]);
2761 			spin_lock_irq(shost->host_lock);
2762 			vports[i]->work_port_events = 0;
2763 			vports[i]->fc_flag |= FC_OFFLINE_MODE;
2764 			spin_unlock_irq(shost->host_lock);
2765 		}
2766 	lpfc_destroy_vport_work_array(phba, vports);
2767 }
2768 
2769 /**
2770  * lpfc_scsi_buf_update - Update the scsi_buffers that are already allocated.
2771  * @phba: pointer to lpfc hba data structure.
2772  *
2773  * This routine goes through all the scsi buffers in the system and updates the
2774  * Physical XRIs assigned to the SCSI buffer because these may change after any
2775  * firmware reset
2776  *
2777  * Return codes
2778  *   0 - successful (for now, it always returns 0)
2779  **/
2780 int
lpfc_scsi_buf_update(struct lpfc_hba * phba)2781 lpfc_scsi_buf_update(struct lpfc_hba *phba)
2782 {
2783 	struct lpfc_scsi_buf *sb, *sb_next;
2784 
2785 	spin_lock_irq(&phba->hbalock);
2786 	spin_lock(&phba->scsi_buf_list_lock);
2787 	list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list, list) {
2788 		sb->cur_iocbq.sli4_xritag =
2789 			phba->sli4_hba.xri_ids[sb->cur_iocbq.sli4_lxritag];
2790 		set_bit(sb->cur_iocbq.sli4_lxritag, phba->sli4_hba.xri_bmask);
2791 		phba->sli4_hba.max_cfg_param.xri_used++;
2792 		phba->sli4_hba.xri_count++;
2793 	}
2794 	spin_unlock(&phba->scsi_buf_list_lock);
2795 	spin_unlock_irq(&phba->hbalock);
2796 	return 0;
2797 }
2798 
2799 /**
2800  * lpfc_scsi_free - Free all the SCSI buffers and IOCBs from driver lists
2801  * @phba: pointer to lpfc hba data structure.
2802  *
2803  * This routine is to free all the SCSI buffers and IOCBs from the driver
2804  * list back to kernel. It is called from lpfc_pci_remove_one to free
2805  * the internal resources before the device is removed from the system.
2806  *
2807  * Return codes
2808  *   0 - successful (for now, it always returns 0)
2809  **/
2810 static int
lpfc_scsi_free(struct lpfc_hba * phba)2811 lpfc_scsi_free(struct lpfc_hba *phba)
2812 {
2813 	struct lpfc_scsi_buf *sb, *sb_next;
2814 	struct lpfc_iocbq *io, *io_next;
2815 
2816 	spin_lock_irq(&phba->hbalock);
2817 	/* Release all the lpfc_scsi_bufs maintained by this host. */
2818 	spin_lock(&phba->scsi_buf_list_lock);
2819 	list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list, list) {
2820 		list_del(&sb->list);
2821 		pci_pool_free(phba->lpfc_scsi_dma_buf_pool, sb->data,
2822 			      sb->dma_handle);
2823 		kfree(sb);
2824 		phba->total_scsi_bufs--;
2825 	}
2826 	spin_unlock(&phba->scsi_buf_list_lock);
2827 
2828 	/* Release all the lpfc_iocbq entries maintained by this host. */
2829 	list_for_each_entry_safe(io, io_next, &phba->lpfc_iocb_list, list) {
2830 		list_del(&io->list);
2831 		kfree(io);
2832 		phba->total_iocbq_bufs--;
2833 	}
2834 
2835 	spin_unlock_irq(&phba->hbalock);
2836 	return 0;
2837 }
2838 
2839 /**
2840  * lpfc_create_port - Create an FC port
2841  * @phba: pointer to lpfc hba data structure.
2842  * @instance: a unique integer ID to this FC port.
2843  * @dev: pointer to the device data structure.
2844  *
2845  * This routine creates a FC port for the upper layer protocol. The FC port
2846  * can be created on top of either a physical port or a virtual port provided
2847  * by the HBA. This routine also allocates a SCSI host data structure (shost)
2848  * and associates the FC port created before adding the shost into the SCSI
2849  * layer.
2850  *
2851  * Return codes
2852  *   @vport - pointer to the virtual N_Port data structure.
2853  *   NULL - port create failed.
2854  **/
2855 struct lpfc_vport *
lpfc_create_port(struct lpfc_hba * phba,int instance,struct device * dev)2856 lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev)
2857 {
2858 	struct lpfc_vport *vport;
2859 	struct Scsi_Host  *shost;
2860 	int error = 0;
2861 
2862 	if (dev != &phba->pcidev->dev)
2863 		shost = scsi_host_alloc(&lpfc_vport_template,
2864 					sizeof(struct lpfc_vport));
2865 	else
2866 		shost = scsi_host_alloc(&lpfc_template,
2867 					sizeof(struct lpfc_vport));
2868 	if (!shost)
2869 		goto out;
2870 
2871 	vport = (struct lpfc_vport *) shost->hostdata;
2872 	vport->phba = phba;
2873 	vport->load_flag |= FC_LOADING;
2874 	vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
2875 	vport->fc_rscn_flush = 0;
2876 
2877 	lpfc_get_vport_cfgparam(vport);
2878 	shost->unique_id = instance;
2879 	shost->max_id = LPFC_MAX_TARGET;
2880 	shost->max_lun = vport->cfg_max_luns;
2881 	shost->this_id = -1;
2882 	shost->max_cmd_len = 16;
2883 	if (phba->sli_rev == LPFC_SLI_REV4) {
2884 		shost->dma_boundary =
2885 			phba->sli4_hba.pc_sli4_params.sge_supp_len-1;
2886 		shost->sg_tablesize = phba->cfg_sg_seg_cnt;
2887 	}
2888 
2889 	/*
2890 	 * Set initial can_queue value since 0 is no longer supported and
2891 	 * scsi_add_host will fail. This will be adjusted later based on the
2892 	 * max xri value determined in hba setup.
2893 	 */
2894 	shost->can_queue = phba->cfg_hba_queue_depth - 10;
2895 	if (dev != &phba->pcidev->dev) {
2896 		shost->transportt = lpfc_vport_transport_template;
2897 		vport->port_type = LPFC_NPIV_PORT;
2898 	} else {
2899 		shost->transportt = lpfc_transport_template;
2900 		vport->port_type = LPFC_PHYSICAL_PORT;
2901 	}
2902 
2903 	/* Initialize all internally managed lists. */
2904 	INIT_LIST_HEAD(&vport->fc_nodes);
2905 	INIT_LIST_HEAD(&vport->rcv_buffer_list);
2906 	spin_lock_init(&vport->work_port_lock);
2907 
2908 	init_timer(&vport->fc_disctmo);
2909 	vport->fc_disctmo.function = lpfc_disc_timeout;
2910 	vport->fc_disctmo.data = (unsigned long)vport;
2911 
2912 	init_timer(&vport->fc_fdmitmo);
2913 	vport->fc_fdmitmo.function = lpfc_fdmi_tmo;
2914 	vport->fc_fdmitmo.data = (unsigned long)vport;
2915 
2916 	init_timer(&vport->els_tmofunc);
2917 	vport->els_tmofunc.function = lpfc_els_timeout;
2918 	vport->els_tmofunc.data = (unsigned long)vport;
2919 
2920 	init_timer(&vport->delayed_disc_tmo);
2921 	vport->delayed_disc_tmo.function = lpfc_delayed_disc_tmo;
2922 	vport->delayed_disc_tmo.data = (unsigned long)vport;
2923 
2924 	error = scsi_add_host_with_dma(shost, dev, &phba->pcidev->dev);
2925 	if (error)
2926 		goto out_put_shost;
2927 
2928 	spin_lock_irq(&phba->hbalock);
2929 	list_add_tail(&vport->listentry, &phba->port_list);
2930 	spin_unlock_irq(&phba->hbalock);
2931 	return vport;
2932 
2933 out_put_shost:
2934 	scsi_host_put(shost);
2935 out:
2936 	return NULL;
2937 }
2938 
2939 /**
2940  * destroy_port -  destroy an FC port
2941  * @vport: pointer to an lpfc virtual N_Port data structure.
2942  *
2943  * This routine destroys a FC port from the upper layer protocol. All the
2944  * resources associated with the port are released.
2945  **/
2946 void
destroy_port(struct lpfc_vport * vport)2947 destroy_port(struct lpfc_vport *vport)
2948 {
2949 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2950 	struct lpfc_hba  *phba = vport->phba;
2951 
2952 	lpfc_debugfs_terminate(vport);
2953 	fc_remove_host(shost);
2954 	scsi_remove_host(shost);
2955 
2956 	spin_lock_irq(&phba->hbalock);
2957 	list_del_init(&vport->listentry);
2958 	spin_unlock_irq(&phba->hbalock);
2959 
2960 	lpfc_cleanup(vport);
2961 	return;
2962 }
2963 
2964 /**
2965  * lpfc_get_instance - Get a unique integer ID
2966  *
2967  * This routine allocates a unique integer ID from lpfc_hba_index pool. It
2968  * uses the kernel idr facility to perform the task.
2969  *
2970  * Return codes:
2971  *   instance - a unique integer ID allocated as the new instance.
2972  *   -1 - lpfc get instance failed.
2973  **/
2974 int
lpfc_get_instance(void)2975 lpfc_get_instance(void)
2976 {
2977 	int instance = 0;
2978 
2979 	/* Assign an unused number */
2980 	if (!idr_pre_get(&lpfc_hba_index, GFP_KERNEL))
2981 		return -1;
2982 	if (idr_get_new(&lpfc_hba_index, NULL, &instance))
2983 		return -1;
2984 	return instance;
2985 }
2986 
2987 /**
2988  * lpfc_scan_finished - method for SCSI layer to detect whether scan is done
2989  * @shost: pointer to SCSI host data structure.
2990  * @time: elapsed time of the scan in jiffies.
2991  *
2992  * This routine is called by the SCSI layer with a SCSI host to determine
2993  * whether the scan host is finished.
2994  *
2995  * Note: there is no scan_start function as adapter initialization will have
2996  * asynchronously kicked off the link initialization.
2997  *
2998  * Return codes
2999  *   0 - SCSI host scan is not over yet.
3000  *   1 - SCSI host scan is over.
3001  **/
lpfc_scan_finished(struct Scsi_Host * shost,unsigned long time)3002 int lpfc_scan_finished(struct Scsi_Host *shost, unsigned long time)
3003 {
3004 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
3005 	struct lpfc_hba   *phba = vport->phba;
3006 	int stat = 0;
3007 
3008 	spin_lock_irq(shost->host_lock);
3009 
3010 	if (vport->load_flag & FC_UNLOADING) {
3011 		stat = 1;
3012 		goto finished;
3013 	}
3014 	if (time >= 30 * HZ) {
3015 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3016 				"0461 Scanning longer than 30 "
3017 				"seconds.  Continuing initialization\n");
3018 		stat = 1;
3019 		goto finished;
3020 	}
3021 	if (time >= 15 * HZ && phba->link_state <= LPFC_LINK_DOWN) {
3022 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3023 				"0465 Link down longer than 15 "
3024 				"seconds.  Continuing initialization\n");
3025 		stat = 1;
3026 		goto finished;
3027 	}
3028 
3029 	if (vport->port_state != LPFC_VPORT_READY)
3030 		goto finished;
3031 	if (vport->num_disc_nodes || vport->fc_prli_sent)
3032 		goto finished;
3033 	if (vport->fc_map_cnt == 0 && time < 2 * HZ)
3034 		goto finished;
3035 	if ((phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) != 0)
3036 		goto finished;
3037 
3038 	stat = 1;
3039 
3040 finished:
3041 	spin_unlock_irq(shost->host_lock);
3042 	return stat;
3043 }
3044 
3045 /**
3046  * lpfc_host_attrib_init - Initialize SCSI host attributes on a FC port
3047  * @shost: pointer to SCSI host data structure.
3048  *
3049  * This routine initializes a given SCSI host attributes on a FC port. The
3050  * SCSI host can be either on top of a physical port or a virtual port.
3051  **/
lpfc_host_attrib_init(struct Scsi_Host * shost)3052 void lpfc_host_attrib_init(struct Scsi_Host *shost)
3053 {
3054 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
3055 	struct lpfc_hba   *phba = vport->phba;
3056 	/*
3057 	 * Set fixed host attributes.  Must done after lpfc_sli_hba_setup().
3058 	 */
3059 
3060 	fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
3061 	fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
3062 	fc_host_supported_classes(shost) = FC_COS_CLASS3;
3063 
3064 	memset(fc_host_supported_fc4s(shost), 0,
3065 	       sizeof(fc_host_supported_fc4s(shost)));
3066 	fc_host_supported_fc4s(shost)[2] = 1;
3067 	fc_host_supported_fc4s(shost)[7] = 1;
3068 
3069 	lpfc_vport_symbolic_node_name(vport, fc_host_symbolic_name(shost),
3070 				 sizeof fc_host_symbolic_name(shost));
3071 
3072 	fc_host_supported_speeds(shost) = 0;
3073 	if (phba->lmt & LMT_16Gb)
3074 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_16GBIT;
3075 	if (phba->lmt & LMT_10Gb)
3076 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_10GBIT;
3077 	if (phba->lmt & LMT_8Gb)
3078 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_8GBIT;
3079 	if (phba->lmt & LMT_4Gb)
3080 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_4GBIT;
3081 	if (phba->lmt & LMT_2Gb)
3082 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_2GBIT;
3083 	if (phba->lmt & LMT_1Gb)
3084 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_1GBIT;
3085 
3086 	fc_host_maxframe_size(shost) =
3087 		(((uint32_t) vport->fc_sparam.cmn.bbRcvSizeMsb & 0x0F) << 8) |
3088 		(uint32_t) vport->fc_sparam.cmn.bbRcvSizeLsb;
3089 
3090 	fc_host_dev_loss_tmo(shost) = vport->cfg_devloss_tmo;
3091 
3092 	/* This value is also unchanging */
3093 	memset(fc_host_active_fc4s(shost), 0,
3094 	       sizeof(fc_host_active_fc4s(shost)));
3095 	fc_host_active_fc4s(shost)[2] = 1;
3096 	fc_host_active_fc4s(shost)[7] = 1;
3097 
3098 	fc_host_max_npiv_vports(shost) = phba->max_vpi;
3099 	spin_lock_irq(shost->host_lock);
3100 	vport->load_flag &= ~FC_LOADING;
3101 	spin_unlock_irq(shost->host_lock);
3102 }
3103 
3104 /**
3105  * lpfc_stop_port_s3 - Stop SLI3 device port
3106  * @phba: pointer to lpfc hba data structure.
3107  *
3108  * This routine is invoked to stop an SLI3 device port, it stops the device
3109  * from generating interrupts and stops the device driver's timers for the
3110  * device.
3111  **/
3112 static void
lpfc_stop_port_s3(struct lpfc_hba * phba)3113 lpfc_stop_port_s3(struct lpfc_hba *phba)
3114 {
3115 	/* Clear all interrupt enable conditions */
3116 	writel(0, phba->HCregaddr);
3117 	readl(phba->HCregaddr); /* flush */
3118 	/* Clear all pending interrupts */
3119 	writel(0xffffffff, phba->HAregaddr);
3120 	readl(phba->HAregaddr); /* flush */
3121 
3122 	/* Reset some HBA SLI setup states */
3123 	lpfc_stop_hba_timers(phba);
3124 	phba->pport->work_port_events = 0;
3125 }
3126 
3127 /**
3128  * lpfc_stop_port_s4 - Stop SLI4 device port
3129  * @phba: pointer to lpfc hba data structure.
3130  *
3131  * This routine is invoked to stop an SLI4 device port, it stops the device
3132  * from generating interrupts and stops the device driver's timers for the
3133  * device.
3134  **/
3135 static void
lpfc_stop_port_s4(struct lpfc_hba * phba)3136 lpfc_stop_port_s4(struct lpfc_hba *phba)
3137 {
3138 	/* Reset some HBA SLI4 setup states */
3139 	lpfc_stop_hba_timers(phba);
3140 	phba->pport->work_port_events = 0;
3141 	phba->sli4_hba.intr_enable = 0;
3142 }
3143 
3144 /**
3145  * lpfc_stop_port - Wrapper function for stopping hba port
3146  * @phba: Pointer to HBA context object.
3147  *
3148  * This routine wraps the actual SLI3 or SLI4 hba stop port routine from
3149  * the API jump table function pointer from the lpfc_hba struct.
3150  **/
3151 void
lpfc_stop_port(struct lpfc_hba * phba)3152 lpfc_stop_port(struct lpfc_hba *phba)
3153 {
3154 	phba->lpfc_stop_port(phba);
3155 }
3156 
3157 /**
3158  * lpfc_fcf_redisc_wait_start_timer - Start fcf rediscover wait timer
3159  * @phba: Pointer to hba for which this call is being executed.
3160  *
3161  * This routine starts the timer waiting for the FCF rediscovery to complete.
3162  **/
3163 void
lpfc_fcf_redisc_wait_start_timer(struct lpfc_hba * phba)3164 lpfc_fcf_redisc_wait_start_timer(struct lpfc_hba *phba)
3165 {
3166 	unsigned long fcf_redisc_wait_tmo =
3167 		(jiffies + msecs_to_jiffies(LPFC_FCF_REDISCOVER_WAIT_TMO));
3168 	/* Start fcf rediscovery wait period timer */
3169 	mod_timer(&phba->fcf.redisc_wait, fcf_redisc_wait_tmo);
3170 	spin_lock_irq(&phba->hbalock);
3171 	/* Allow action to new fcf asynchronous event */
3172 	phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
3173 	/* Mark the FCF rediscovery pending state */
3174 	phba->fcf.fcf_flag |= FCF_REDISC_PEND;
3175 	spin_unlock_irq(&phba->hbalock);
3176 }
3177 
3178 /**
3179  * lpfc_sli4_fcf_redisc_wait_tmo - FCF table rediscover wait timeout
3180  * @ptr: Map to lpfc_hba data structure pointer.
3181  *
3182  * This routine is invoked when waiting for FCF table rediscover has been
3183  * timed out. If new FCF record(s) has (have) been discovered during the
3184  * wait period, a new FCF event shall be added to the FCOE async event
3185  * list, and then worker thread shall be waked up for processing from the
3186  * worker thread context.
3187  **/
3188 void
lpfc_sli4_fcf_redisc_wait_tmo(unsigned long ptr)3189 lpfc_sli4_fcf_redisc_wait_tmo(unsigned long ptr)
3190 {
3191 	struct lpfc_hba *phba = (struct lpfc_hba *)ptr;
3192 
3193 	/* Don't send FCF rediscovery event if timer cancelled */
3194 	spin_lock_irq(&phba->hbalock);
3195 	if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
3196 		spin_unlock_irq(&phba->hbalock);
3197 		return;
3198 	}
3199 	/* Clear FCF rediscovery timer pending flag */
3200 	phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
3201 	/* FCF rediscovery event to worker thread */
3202 	phba->fcf.fcf_flag |= FCF_REDISC_EVT;
3203 	spin_unlock_irq(&phba->hbalock);
3204 	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3205 			"2776 FCF rediscover quiescent timer expired\n");
3206 	/* wake up worker thread */
3207 	lpfc_worker_wake_up(phba);
3208 }
3209 
3210 /**
3211  * lpfc_sli4_parse_latt_fault - Parse sli4 link-attention link fault code
3212  * @phba: pointer to lpfc hba data structure.
3213  * @acqe_link: pointer to the async link completion queue entry.
3214  *
3215  * This routine is to parse the SLI4 link-attention link fault code and
3216  * translate it into the base driver's read link attention mailbox command
3217  * status.
3218  *
3219  * Return: Link-attention status in terms of base driver's coding.
3220  **/
3221 static uint16_t
lpfc_sli4_parse_latt_fault(struct lpfc_hba * phba,struct lpfc_acqe_link * acqe_link)3222 lpfc_sli4_parse_latt_fault(struct lpfc_hba *phba,
3223 			   struct lpfc_acqe_link *acqe_link)
3224 {
3225 	uint16_t latt_fault;
3226 
3227 	switch (bf_get(lpfc_acqe_link_fault, acqe_link)) {
3228 	case LPFC_ASYNC_LINK_FAULT_NONE:
3229 	case LPFC_ASYNC_LINK_FAULT_LOCAL:
3230 	case LPFC_ASYNC_LINK_FAULT_REMOTE:
3231 		latt_fault = 0;
3232 		break;
3233 	default:
3234 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3235 				"0398 Invalid link fault code: x%x\n",
3236 				bf_get(lpfc_acqe_link_fault, acqe_link));
3237 		latt_fault = MBXERR_ERROR;
3238 		break;
3239 	}
3240 	return latt_fault;
3241 }
3242 
3243 /**
3244  * lpfc_sli4_parse_latt_type - Parse sli4 link attention type
3245  * @phba: pointer to lpfc hba data structure.
3246  * @acqe_link: pointer to the async link completion queue entry.
3247  *
3248  * This routine is to parse the SLI4 link attention type and translate it
3249  * into the base driver's link attention type coding.
3250  *
3251  * Return: Link attention type in terms of base driver's coding.
3252  **/
3253 static uint8_t
lpfc_sli4_parse_latt_type(struct lpfc_hba * phba,struct lpfc_acqe_link * acqe_link)3254 lpfc_sli4_parse_latt_type(struct lpfc_hba *phba,
3255 			  struct lpfc_acqe_link *acqe_link)
3256 {
3257 	uint8_t att_type;
3258 
3259 	switch (bf_get(lpfc_acqe_link_status, acqe_link)) {
3260 	case LPFC_ASYNC_LINK_STATUS_DOWN:
3261 	case LPFC_ASYNC_LINK_STATUS_LOGICAL_DOWN:
3262 		att_type = LPFC_ATT_LINK_DOWN;
3263 		break;
3264 	case LPFC_ASYNC_LINK_STATUS_UP:
3265 		/* Ignore physical link up events - wait for logical link up */
3266 		att_type = LPFC_ATT_RESERVED;
3267 		break;
3268 	case LPFC_ASYNC_LINK_STATUS_LOGICAL_UP:
3269 		att_type = LPFC_ATT_LINK_UP;
3270 		break;
3271 	default:
3272 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3273 				"0399 Invalid link attention type: x%x\n",
3274 				bf_get(lpfc_acqe_link_status, acqe_link));
3275 		att_type = LPFC_ATT_RESERVED;
3276 		break;
3277 	}
3278 	return att_type;
3279 }
3280 
3281 /**
3282  * lpfc_sli4_parse_latt_link_speed - Parse sli4 link-attention link speed
3283  * @phba: pointer to lpfc hba data structure.
3284  * @acqe_link: pointer to the async link completion queue entry.
3285  *
3286  * This routine is to parse the SLI4 link-attention link speed and translate
3287  * it into the base driver's link-attention link speed coding.
3288  *
3289  * Return: Link-attention link speed in terms of base driver's coding.
3290  **/
3291 static uint8_t
lpfc_sli4_parse_latt_link_speed(struct lpfc_hba * phba,struct lpfc_acqe_link * acqe_link)3292 lpfc_sli4_parse_latt_link_speed(struct lpfc_hba *phba,
3293 				struct lpfc_acqe_link *acqe_link)
3294 {
3295 	uint8_t link_speed;
3296 
3297 	switch (bf_get(lpfc_acqe_link_speed, acqe_link)) {
3298 	case LPFC_ASYNC_LINK_SPEED_ZERO:
3299 	case LPFC_ASYNC_LINK_SPEED_10MBPS:
3300 	case LPFC_ASYNC_LINK_SPEED_100MBPS:
3301 		link_speed = LPFC_LINK_SPEED_UNKNOWN;
3302 		break;
3303 	case LPFC_ASYNC_LINK_SPEED_1GBPS:
3304 		link_speed = LPFC_LINK_SPEED_1GHZ;
3305 		break;
3306 	case LPFC_ASYNC_LINK_SPEED_10GBPS:
3307 		link_speed = LPFC_LINK_SPEED_10GHZ;
3308 		break;
3309 	default:
3310 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3311 				"0483 Invalid link-attention link speed: x%x\n",
3312 				bf_get(lpfc_acqe_link_speed, acqe_link));
3313 		link_speed = LPFC_LINK_SPEED_UNKNOWN;
3314 		break;
3315 	}
3316 	return link_speed;
3317 }
3318 
3319 /**
3320  * lpfc_sli4_async_link_evt - Process the asynchronous FCoE link event
3321  * @phba: pointer to lpfc hba data structure.
3322  * @acqe_link: pointer to the async link completion queue entry.
3323  *
3324  * This routine is to handle the SLI4 asynchronous FCoE link event.
3325  **/
3326 static void
lpfc_sli4_async_link_evt(struct lpfc_hba * phba,struct lpfc_acqe_link * acqe_link)3327 lpfc_sli4_async_link_evt(struct lpfc_hba *phba,
3328 			 struct lpfc_acqe_link *acqe_link)
3329 {
3330 	struct lpfc_dmabuf *mp;
3331 	LPFC_MBOXQ_t *pmb;
3332 	MAILBOX_t *mb;
3333 	struct lpfc_mbx_read_top *la;
3334 	uint8_t att_type;
3335 	int rc;
3336 
3337 	att_type = lpfc_sli4_parse_latt_type(phba, acqe_link);
3338 	if (att_type != LPFC_ATT_LINK_DOWN && att_type != LPFC_ATT_LINK_UP)
3339 		return;
3340 	phba->fcoe_eventtag = acqe_link->event_tag;
3341 	pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3342 	if (!pmb) {
3343 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3344 				"0395 The mboxq allocation failed\n");
3345 		return;
3346 	}
3347 	mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
3348 	if (!mp) {
3349 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3350 				"0396 The lpfc_dmabuf allocation failed\n");
3351 		goto out_free_pmb;
3352 	}
3353 	mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
3354 	if (!mp->virt) {
3355 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3356 				"0397 The mbuf allocation failed\n");
3357 		goto out_free_dmabuf;
3358 	}
3359 
3360 	/* Cleanup any outstanding ELS commands */
3361 	lpfc_els_flush_all_cmd(phba);
3362 
3363 	/* Block ELS IOCBs until we have done process link event */
3364 	phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
3365 
3366 	/* Update link event statistics */
3367 	phba->sli.slistat.link_event++;
3368 
3369 	/* Create lpfc_handle_latt mailbox command from link ACQE */
3370 	lpfc_read_topology(phba, pmb, mp);
3371 	pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
3372 	pmb->vport = phba->pport;
3373 
3374 	/* Keep the link status for extra SLI4 state machine reference */
3375 	phba->sli4_hba.link_state.speed =
3376 				bf_get(lpfc_acqe_link_speed, acqe_link);
3377 	phba->sli4_hba.link_state.duplex =
3378 				bf_get(lpfc_acqe_link_duplex, acqe_link);
3379 	phba->sli4_hba.link_state.status =
3380 				bf_get(lpfc_acqe_link_status, acqe_link);
3381 	phba->sli4_hba.link_state.type =
3382 				bf_get(lpfc_acqe_link_type, acqe_link);
3383 	phba->sli4_hba.link_state.number =
3384 				bf_get(lpfc_acqe_link_number, acqe_link);
3385 	phba->sli4_hba.link_state.fault =
3386 				bf_get(lpfc_acqe_link_fault, acqe_link);
3387 	phba->sli4_hba.link_state.logical_speed =
3388 			bf_get(lpfc_acqe_logical_link_speed, acqe_link);
3389 	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3390 			"2900 Async FC/FCoE Link event - Speed:%dGBit "
3391 			"duplex:x%x LA Type:x%x Port Type:%d Port Number:%d "
3392 			"Logical speed:%dMbps Fault:%d\n",
3393 			phba->sli4_hba.link_state.speed,
3394 			phba->sli4_hba.link_state.topology,
3395 			phba->sli4_hba.link_state.status,
3396 			phba->sli4_hba.link_state.type,
3397 			phba->sli4_hba.link_state.number,
3398 			phba->sli4_hba.link_state.logical_speed * 10,
3399 			phba->sli4_hba.link_state.fault);
3400 	/*
3401 	 * For FC Mode: issue the READ_TOPOLOGY mailbox command to fetch
3402 	 * topology info. Note: Optional for non FC-AL ports.
3403 	 */
3404 	if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3405 		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
3406 		if (rc == MBX_NOT_FINISHED)
3407 			goto out_free_dmabuf;
3408 		return;
3409 	}
3410 	/*
3411 	 * For FCoE Mode: fill in all the topology information we need and call
3412 	 * the READ_TOPOLOGY completion routine to continue without actually
3413 	 * sending the READ_TOPOLOGY mailbox command to the port.
3414 	 */
3415 	/* Parse and translate status field */
3416 	mb = &pmb->u.mb;
3417 	mb->mbxStatus = lpfc_sli4_parse_latt_fault(phba, acqe_link);
3418 
3419 	/* Parse and translate link attention fields */
3420 	la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3421 	la->eventTag = acqe_link->event_tag;
3422 	bf_set(lpfc_mbx_read_top_att_type, la, att_type);
3423 	bf_set(lpfc_mbx_read_top_link_spd, la,
3424 	       lpfc_sli4_parse_latt_link_speed(phba, acqe_link));
3425 
3426 	/* Fake the the following irrelvant fields */
3427 	bf_set(lpfc_mbx_read_top_topology, la, LPFC_TOPOLOGY_PT_PT);
3428 	bf_set(lpfc_mbx_read_top_alpa_granted, la, 0);
3429 	bf_set(lpfc_mbx_read_top_il, la, 0);
3430 	bf_set(lpfc_mbx_read_top_pb, la, 0);
3431 	bf_set(lpfc_mbx_read_top_fa, la, 0);
3432 	bf_set(lpfc_mbx_read_top_mm, la, 0);
3433 
3434 	/* Invoke the lpfc_handle_latt mailbox command callback function */
3435 	lpfc_mbx_cmpl_read_topology(phba, pmb);
3436 
3437 	return;
3438 
3439 out_free_dmabuf:
3440 	kfree(mp);
3441 out_free_pmb:
3442 	mempool_free(pmb, phba->mbox_mem_pool);
3443 }
3444 
3445 /**
3446  * lpfc_sli4_async_fc_evt - Process the asynchronous FC link event
3447  * @phba: pointer to lpfc hba data structure.
3448  * @acqe_fc: pointer to the async fc completion queue entry.
3449  *
3450  * This routine is to handle the SLI4 asynchronous FC event. It will simply log
3451  * that the event was received and then issue a read_topology mailbox command so
3452  * that the rest of the driver will treat it the same as SLI3.
3453  **/
3454 static void
lpfc_sli4_async_fc_evt(struct lpfc_hba * phba,struct lpfc_acqe_fc_la * acqe_fc)3455 lpfc_sli4_async_fc_evt(struct lpfc_hba *phba, struct lpfc_acqe_fc_la *acqe_fc)
3456 {
3457 	struct lpfc_dmabuf *mp;
3458 	LPFC_MBOXQ_t *pmb;
3459 	int rc;
3460 
3461 	if (bf_get(lpfc_trailer_type, acqe_fc) !=
3462 	    LPFC_FC_LA_EVENT_TYPE_FC_LINK) {
3463 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3464 				"2895 Non FC link Event detected.(%d)\n",
3465 				bf_get(lpfc_trailer_type, acqe_fc));
3466 		return;
3467 	}
3468 	/* Keep the link status for extra SLI4 state machine reference */
3469 	phba->sli4_hba.link_state.speed =
3470 				bf_get(lpfc_acqe_fc_la_speed, acqe_fc);
3471 	phba->sli4_hba.link_state.duplex = LPFC_ASYNC_LINK_DUPLEX_FULL;
3472 	phba->sli4_hba.link_state.topology =
3473 				bf_get(lpfc_acqe_fc_la_topology, acqe_fc);
3474 	phba->sli4_hba.link_state.status =
3475 				bf_get(lpfc_acqe_fc_la_att_type, acqe_fc);
3476 	phba->sli4_hba.link_state.type =
3477 				bf_get(lpfc_acqe_fc_la_port_type, acqe_fc);
3478 	phba->sli4_hba.link_state.number =
3479 				bf_get(lpfc_acqe_fc_la_port_number, acqe_fc);
3480 	phba->sli4_hba.link_state.fault =
3481 				bf_get(lpfc_acqe_link_fault, acqe_fc);
3482 	phba->sli4_hba.link_state.logical_speed =
3483 				bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc);
3484 	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3485 			"2896 Async FC event - Speed:%dGBaud Topology:x%x "
3486 			"LA Type:x%x Port Type:%d Port Number:%d Logical speed:"
3487 			"%dMbps Fault:%d\n",
3488 			phba->sli4_hba.link_state.speed,
3489 			phba->sli4_hba.link_state.topology,
3490 			phba->sli4_hba.link_state.status,
3491 			phba->sli4_hba.link_state.type,
3492 			phba->sli4_hba.link_state.number,
3493 			phba->sli4_hba.link_state.logical_speed * 10,
3494 			phba->sli4_hba.link_state.fault);
3495 	pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3496 	if (!pmb) {
3497 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3498 				"2897 The mboxq allocation failed\n");
3499 		return;
3500 	}
3501 	mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
3502 	if (!mp) {
3503 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3504 				"2898 The lpfc_dmabuf allocation failed\n");
3505 		goto out_free_pmb;
3506 	}
3507 	mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
3508 	if (!mp->virt) {
3509 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3510 				"2899 The mbuf allocation failed\n");
3511 		goto out_free_dmabuf;
3512 	}
3513 
3514 	/* Cleanup any outstanding ELS commands */
3515 	lpfc_els_flush_all_cmd(phba);
3516 
3517 	/* Block ELS IOCBs until we have done process link event */
3518 	phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
3519 
3520 	/* Update link event statistics */
3521 	phba->sli.slistat.link_event++;
3522 
3523 	/* Create lpfc_handle_latt mailbox command from link ACQE */
3524 	lpfc_read_topology(phba, pmb, mp);
3525 	pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
3526 	pmb->vport = phba->pport;
3527 
3528 	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
3529 	if (rc == MBX_NOT_FINISHED)
3530 		goto out_free_dmabuf;
3531 	return;
3532 
3533 out_free_dmabuf:
3534 	kfree(mp);
3535 out_free_pmb:
3536 	mempool_free(pmb, phba->mbox_mem_pool);
3537 }
3538 
3539 /**
3540  * lpfc_sli4_async_sli_evt - Process the asynchronous SLI link event
3541  * @phba: pointer to lpfc hba data structure.
3542  * @acqe_fc: pointer to the async SLI completion queue entry.
3543  *
3544  * This routine is to handle the SLI4 asynchronous SLI events.
3545  **/
3546 static void
lpfc_sli4_async_sli_evt(struct lpfc_hba * phba,struct lpfc_acqe_sli * acqe_sli)3547 lpfc_sli4_async_sli_evt(struct lpfc_hba *phba, struct lpfc_acqe_sli *acqe_sli)
3548 {
3549 	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3550 			"2901 Async SLI event - Event Data1:x%08x Event Data2:"
3551 			"x%08x SLI Event Type:%d",
3552 			acqe_sli->event_data1, acqe_sli->event_data2,
3553 			bf_get(lpfc_trailer_type, acqe_sli));
3554 	return;
3555 }
3556 
3557 /**
3558  * lpfc_sli4_perform_vport_cvl - Perform clear virtual link on a vport
3559  * @vport: pointer to vport data structure.
3560  *
3561  * This routine is to perform Clear Virtual Link (CVL) on a vport in
3562  * response to a CVL event.
3563  *
3564  * Return the pointer to the ndlp with the vport if successful, otherwise
3565  * return NULL.
3566  **/
3567 static struct lpfc_nodelist *
lpfc_sli4_perform_vport_cvl(struct lpfc_vport * vport)3568 lpfc_sli4_perform_vport_cvl(struct lpfc_vport *vport)
3569 {
3570 	struct lpfc_nodelist *ndlp;
3571 	struct Scsi_Host *shost;
3572 	struct lpfc_hba *phba;
3573 
3574 	if (!vport)
3575 		return NULL;
3576 	phba = vport->phba;
3577 	if (!phba)
3578 		return NULL;
3579 	ndlp = lpfc_findnode_did(vport, Fabric_DID);
3580 	if (!ndlp) {
3581 		/* Cannot find existing Fabric ndlp, so allocate a new one */
3582 		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
3583 		if (!ndlp)
3584 			return 0;
3585 		lpfc_nlp_init(vport, ndlp, Fabric_DID);
3586 		/* Set the node type */
3587 		ndlp->nlp_type |= NLP_FABRIC;
3588 		/* Put ndlp onto node list */
3589 		lpfc_enqueue_node(vport, ndlp);
3590 	} else if (!NLP_CHK_NODE_ACT(ndlp)) {
3591 		/* re-setup ndlp without removing from node list */
3592 		ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
3593 		if (!ndlp)
3594 			return 0;
3595 	}
3596 	if ((phba->pport->port_state < LPFC_FLOGI) &&
3597 		(phba->pport->port_state != LPFC_VPORT_FAILED))
3598 		return NULL;
3599 	/* If virtual link is not yet instantiated ignore CVL */
3600 	if ((vport != phba->pport) && (vport->port_state < LPFC_FDISC)
3601 		&& (vport->port_state != LPFC_VPORT_FAILED))
3602 		return NULL;
3603 	shost = lpfc_shost_from_vport(vport);
3604 	if (!shost)
3605 		return NULL;
3606 	lpfc_linkdown_port(vport);
3607 	lpfc_cleanup_pending_mbox(vport);
3608 	spin_lock_irq(shost->host_lock);
3609 	vport->fc_flag |= FC_VPORT_CVL_RCVD;
3610 	spin_unlock_irq(shost->host_lock);
3611 
3612 	return ndlp;
3613 }
3614 
3615 /**
3616  * lpfc_sli4_perform_all_vport_cvl - Perform clear virtual link on all vports
3617  * @vport: pointer to lpfc hba data structure.
3618  *
3619  * This routine is to perform Clear Virtual Link (CVL) on all vports in
3620  * response to a FCF dead event.
3621  **/
3622 static void
lpfc_sli4_perform_all_vport_cvl(struct lpfc_hba * phba)3623 lpfc_sli4_perform_all_vport_cvl(struct lpfc_hba *phba)
3624 {
3625 	struct lpfc_vport **vports;
3626 	int i;
3627 
3628 	vports = lpfc_create_vport_work_array(phba);
3629 	if (vports)
3630 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
3631 			lpfc_sli4_perform_vport_cvl(vports[i]);
3632 	lpfc_destroy_vport_work_array(phba, vports);
3633 }
3634 
3635 /**
3636  * lpfc_sli4_async_fip_evt - Process the asynchronous FCoE FIP event
3637  * @phba: pointer to lpfc hba data structure.
3638  * @acqe_link: pointer to the async fcoe completion queue entry.
3639  *
3640  * This routine is to handle the SLI4 asynchronous fcoe event.
3641  **/
3642 static void
lpfc_sli4_async_fip_evt(struct lpfc_hba * phba,struct lpfc_acqe_fip * acqe_fip)3643 lpfc_sli4_async_fip_evt(struct lpfc_hba *phba,
3644 			struct lpfc_acqe_fip *acqe_fip)
3645 {
3646 	uint8_t event_type = bf_get(lpfc_trailer_type, acqe_fip);
3647 	int rc;
3648 	struct lpfc_vport *vport;
3649 	struct lpfc_nodelist *ndlp;
3650 	struct Scsi_Host  *shost;
3651 	int active_vlink_present;
3652 	struct lpfc_vport **vports;
3653 	int i;
3654 
3655 	phba->fc_eventTag = acqe_fip->event_tag;
3656 	phba->fcoe_eventtag = acqe_fip->event_tag;
3657 	switch (event_type) {
3658 	case LPFC_FIP_EVENT_TYPE_NEW_FCF:
3659 	case LPFC_FIP_EVENT_TYPE_FCF_PARAM_MOD:
3660 		if (event_type == LPFC_FIP_EVENT_TYPE_NEW_FCF)
3661 			lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
3662 					LOG_DISCOVERY,
3663 					"2546 New FCF event, evt_tag:x%x, "
3664 					"index:x%x\n",
3665 					acqe_fip->event_tag,
3666 					acqe_fip->index);
3667 		else
3668 			lpfc_printf_log(phba, KERN_WARNING, LOG_FIP |
3669 					LOG_DISCOVERY,
3670 					"2788 FCF param modified event, "
3671 					"evt_tag:x%x, index:x%x\n",
3672 					acqe_fip->event_tag,
3673 					acqe_fip->index);
3674 		if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
3675 			/*
3676 			 * During period of FCF discovery, read the FCF
3677 			 * table record indexed by the event to update
3678 			 * FCF roundrobin failover eligible FCF bmask.
3679 			 */
3680 			lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
3681 					LOG_DISCOVERY,
3682 					"2779 Read FCF (x%x) for updating "
3683 					"roundrobin FCF failover bmask\n",
3684 					acqe_fip->index);
3685 			rc = lpfc_sli4_read_fcf_rec(phba, acqe_fip->index);
3686 		}
3687 
3688 		/* If the FCF discovery is in progress, do nothing. */
3689 		spin_lock_irq(&phba->hbalock);
3690 		if (phba->hba_flag & FCF_TS_INPROG) {
3691 			spin_unlock_irq(&phba->hbalock);
3692 			break;
3693 		}
3694 		/* If fast FCF failover rescan event is pending, do nothing */
3695 		if (phba->fcf.fcf_flag & FCF_REDISC_EVT) {
3696 			spin_unlock_irq(&phba->hbalock);
3697 			break;
3698 		}
3699 
3700 		/* If the FCF has been in discovered state, do nothing. */
3701 		if (phba->fcf.fcf_flag & FCF_SCAN_DONE) {
3702 			spin_unlock_irq(&phba->hbalock);
3703 			break;
3704 		}
3705 		spin_unlock_irq(&phba->hbalock);
3706 
3707 		/* Otherwise, scan the entire FCF table and re-discover SAN */
3708 		lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3709 				"2770 Start FCF table scan per async FCF "
3710 				"event, evt_tag:x%x, index:x%x\n",
3711 				acqe_fip->event_tag, acqe_fip->index);
3712 		rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3713 						     LPFC_FCOE_FCF_GET_FIRST);
3714 		if (rc)
3715 			lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
3716 					"2547 Issue FCF scan read FCF mailbox "
3717 					"command failed (x%x)\n", rc);
3718 		break;
3719 
3720 	case LPFC_FIP_EVENT_TYPE_FCF_TABLE_FULL:
3721 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3722 			"2548 FCF Table full count 0x%x tag 0x%x\n",
3723 			bf_get(lpfc_acqe_fip_fcf_count, acqe_fip),
3724 			acqe_fip->event_tag);
3725 		break;
3726 
3727 	case LPFC_FIP_EVENT_TYPE_FCF_DEAD:
3728 		phba->fcoe_cvl_eventtag = acqe_fip->event_tag;
3729 		lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
3730 			"2549 FCF (x%x) disconnected from network, "
3731 			"tag:x%x\n", acqe_fip->index, acqe_fip->event_tag);
3732 		/*
3733 		 * If we are in the middle of FCF failover process, clear
3734 		 * the corresponding FCF bit in the roundrobin bitmap.
3735 		 */
3736 		spin_lock_irq(&phba->hbalock);
3737 		if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
3738 			spin_unlock_irq(&phba->hbalock);
3739 			/* Update FLOGI FCF failover eligible FCF bmask */
3740 			lpfc_sli4_fcf_rr_index_clear(phba, acqe_fip->index);
3741 			break;
3742 		}
3743 		spin_unlock_irq(&phba->hbalock);
3744 
3745 		/* If the event is not for currently used fcf do nothing */
3746 		if (phba->fcf.current_rec.fcf_indx != acqe_fip->index)
3747 			break;
3748 
3749 		/*
3750 		 * Otherwise, request the port to rediscover the entire FCF
3751 		 * table for a fast recovery from case that the current FCF
3752 		 * is no longer valid as we are not in the middle of FCF
3753 		 * failover process already.
3754 		 */
3755 		spin_lock_irq(&phba->hbalock);
3756 		/* Mark the fast failover process in progress */
3757 		phba->fcf.fcf_flag |= FCF_DEAD_DISC;
3758 		spin_unlock_irq(&phba->hbalock);
3759 
3760 		lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3761 				"2771 Start FCF fast failover process due to "
3762 				"FCF DEAD event: evt_tag:x%x, fcf_index:x%x "
3763 				"\n", acqe_fip->event_tag, acqe_fip->index);
3764 		rc = lpfc_sli4_redisc_fcf_table(phba);
3765 		if (rc) {
3766 			lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
3767 					LOG_DISCOVERY,
3768 					"2772 Issue FCF rediscover mabilbox "
3769 					"command failed, fail through to FCF "
3770 					"dead event\n");
3771 			spin_lock_irq(&phba->hbalock);
3772 			phba->fcf.fcf_flag &= ~FCF_DEAD_DISC;
3773 			spin_unlock_irq(&phba->hbalock);
3774 			/*
3775 			 * Last resort will fail over by treating this
3776 			 * as a link down to FCF registration.
3777 			 */
3778 			lpfc_sli4_fcf_dead_failthrough(phba);
3779 		} else {
3780 			/* Reset FCF roundrobin bmask for new discovery */
3781 			lpfc_sli4_clear_fcf_rr_bmask(phba);
3782 			/*
3783 			 * Handling fast FCF failover to a DEAD FCF event is
3784 			 * considered equalivant to receiving CVL to all vports.
3785 			 */
3786 			lpfc_sli4_perform_all_vport_cvl(phba);
3787 		}
3788 		break;
3789 	case LPFC_FIP_EVENT_TYPE_CVL:
3790 		phba->fcoe_cvl_eventtag = acqe_fip->event_tag;
3791 		lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
3792 			"2718 Clear Virtual Link Received for VPI 0x%x"
3793 			" tag 0x%x\n", acqe_fip->index, acqe_fip->event_tag);
3794 
3795 		vport = lpfc_find_vport_by_vpid(phba,
3796 						acqe_fip->index);
3797 		ndlp = lpfc_sli4_perform_vport_cvl(vport);
3798 		if (!ndlp)
3799 			break;
3800 		active_vlink_present = 0;
3801 
3802 		vports = lpfc_create_vport_work_array(phba);
3803 		if (vports) {
3804 			for (i = 0; i <= phba->max_vports && vports[i] != NULL;
3805 					i++) {
3806 				if ((!(vports[i]->fc_flag &
3807 					FC_VPORT_CVL_RCVD)) &&
3808 					(vports[i]->port_state > LPFC_FDISC)) {
3809 					active_vlink_present = 1;
3810 					break;
3811 				}
3812 			}
3813 			lpfc_destroy_vport_work_array(phba, vports);
3814 		}
3815 
3816 		if (active_vlink_present) {
3817 			/*
3818 			 * If there are other active VLinks present,
3819 			 * re-instantiate the Vlink using FDISC.
3820 			 */
3821 			mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
3822 			shost = lpfc_shost_from_vport(vport);
3823 			spin_lock_irq(shost->host_lock);
3824 			ndlp->nlp_flag |= NLP_DELAY_TMO;
3825 			spin_unlock_irq(shost->host_lock);
3826 			ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
3827 			vport->port_state = LPFC_FDISC;
3828 		} else {
3829 			/*
3830 			 * Otherwise, we request port to rediscover
3831 			 * the entire FCF table for a fast recovery
3832 			 * from possible case that the current FCF
3833 			 * is no longer valid if we are not already
3834 			 * in the FCF failover process.
3835 			 */
3836 			spin_lock_irq(&phba->hbalock);
3837 			if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
3838 				spin_unlock_irq(&phba->hbalock);
3839 				break;
3840 			}
3841 			/* Mark the fast failover process in progress */
3842 			phba->fcf.fcf_flag |= FCF_ACVL_DISC;
3843 			spin_unlock_irq(&phba->hbalock);
3844 			lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
3845 					LOG_DISCOVERY,
3846 					"2773 Start FCF failover per CVL, "
3847 					"evt_tag:x%x\n", acqe_fip->event_tag);
3848 			rc = lpfc_sli4_redisc_fcf_table(phba);
3849 			if (rc) {
3850 				lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
3851 						LOG_DISCOVERY,
3852 						"2774 Issue FCF rediscover "
3853 						"mabilbox command failed, "
3854 						"through to CVL event\n");
3855 				spin_lock_irq(&phba->hbalock);
3856 				phba->fcf.fcf_flag &= ~FCF_ACVL_DISC;
3857 				spin_unlock_irq(&phba->hbalock);
3858 				/*
3859 				 * Last resort will be re-try on the
3860 				 * the current registered FCF entry.
3861 				 */
3862 				lpfc_retry_pport_discovery(phba);
3863 			} else
3864 				/*
3865 				 * Reset FCF roundrobin bmask for new
3866 				 * discovery.
3867 				 */
3868 				lpfc_sli4_clear_fcf_rr_bmask(phba);
3869 		}
3870 		break;
3871 	default:
3872 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3873 			"0288 Unknown FCoE event type 0x%x event tag "
3874 			"0x%x\n", event_type, acqe_fip->event_tag);
3875 		break;
3876 	}
3877 }
3878 
3879 /**
3880  * lpfc_sli4_async_dcbx_evt - Process the asynchronous dcbx event
3881  * @phba: pointer to lpfc hba data structure.
3882  * @acqe_link: pointer to the async dcbx completion queue entry.
3883  *
3884  * This routine is to handle the SLI4 asynchronous dcbx event.
3885  **/
3886 static void
lpfc_sli4_async_dcbx_evt(struct lpfc_hba * phba,struct lpfc_acqe_dcbx * acqe_dcbx)3887 lpfc_sli4_async_dcbx_evt(struct lpfc_hba *phba,
3888 			 struct lpfc_acqe_dcbx *acqe_dcbx)
3889 {
3890 	phba->fc_eventTag = acqe_dcbx->event_tag;
3891 	lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3892 			"0290 The SLI4 DCBX asynchronous event is not "
3893 			"handled yet\n");
3894 }
3895 
3896 /**
3897  * lpfc_sli4_async_grp5_evt - Process the asynchronous group5 event
3898  * @phba: pointer to lpfc hba data structure.
3899  * @acqe_link: pointer to the async grp5 completion queue entry.
3900  *
3901  * This routine is to handle the SLI4 asynchronous grp5 event. A grp5 event
3902  * is an asynchronous notified of a logical link speed change.  The Port
3903  * reports the logical link speed in units of 10Mbps.
3904  **/
3905 static void
lpfc_sli4_async_grp5_evt(struct lpfc_hba * phba,struct lpfc_acqe_grp5 * acqe_grp5)3906 lpfc_sli4_async_grp5_evt(struct lpfc_hba *phba,
3907 			 struct lpfc_acqe_grp5 *acqe_grp5)
3908 {
3909 	uint16_t prev_ll_spd;
3910 
3911 	phba->fc_eventTag = acqe_grp5->event_tag;
3912 	phba->fcoe_eventtag = acqe_grp5->event_tag;
3913 	prev_ll_spd = phba->sli4_hba.link_state.logical_speed;
3914 	phba->sli4_hba.link_state.logical_speed =
3915 		(bf_get(lpfc_acqe_grp5_llink_spd, acqe_grp5));
3916 	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3917 			"2789 GRP5 Async Event: Updating logical link speed "
3918 			"from %dMbps to %dMbps\n", (prev_ll_spd * 10),
3919 			(phba->sli4_hba.link_state.logical_speed*10));
3920 }
3921 
3922 /**
3923  * lpfc_sli4_async_event_proc - Process all the pending asynchronous event
3924  * @phba: pointer to lpfc hba data structure.
3925  *
3926  * This routine is invoked by the worker thread to process all the pending
3927  * SLI4 asynchronous events.
3928  **/
lpfc_sli4_async_event_proc(struct lpfc_hba * phba)3929 void lpfc_sli4_async_event_proc(struct lpfc_hba *phba)
3930 {
3931 	struct lpfc_cq_event *cq_event;
3932 
3933 	/* First, declare the async event has been handled */
3934 	spin_lock_irq(&phba->hbalock);
3935 	phba->hba_flag &= ~ASYNC_EVENT;
3936 	spin_unlock_irq(&phba->hbalock);
3937 	/* Now, handle all the async events */
3938 	while (!list_empty(&phba->sli4_hba.sp_asynce_work_queue)) {
3939 		/* Get the first event from the head of the event queue */
3940 		spin_lock_irq(&phba->hbalock);
3941 		list_remove_head(&phba->sli4_hba.sp_asynce_work_queue,
3942 				 cq_event, struct lpfc_cq_event, list);
3943 		spin_unlock_irq(&phba->hbalock);
3944 		/* Process the asynchronous event */
3945 		switch (bf_get(lpfc_trailer_code, &cq_event->cqe.mcqe_cmpl)) {
3946 		case LPFC_TRAILER_CODE_LINK:
3947 			lpfc_sli4_async_link_evt(phba,
3948 						 &cq_event->cqe.acqe_link);
3949 			break;
3950 		case LPFC_TRAILER_CODE_FCOE:
3951 			lpfc_sli4_async_fip_evt(phba, &cq_event->cqe.acqe_fip);
3952 			break;
3953 		case LPFC_TRAILER_CODE_DCBX:
3954 			lpfc_sli4_async_dcbx_evt(phba,
3955 						 &cq_event->cqe.acqe_dcbx);
3956 			break;
3957 		case LPFC_TRAILER_CODE_GRP5:
3958 			lpfc_sli4_async_grp5_evt(phba,
3959 						 &cq_event->cqe.acqe_grp5);
3960 			break;
3961 		case LPFC_TRAILER_CODE_FC:
3962 			lpfc_sli4_async_fc_evt(phba, &cq_event->cqe.acqe_fc);
3963 			break;
3964 		case LPFC_TRAILER_CODE_SLI:
3965 			lpfc_sli4_async_sli_evt(phba, &cq_event->cqe.acqe_sli);
3966 			break;
3967 		default:
3968 			lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3969 					"1804 Invalid asynchrous event code: "
3970 					"x%x\n", bf_get(lpfc_trailer_code,
3971 					&cq_event->cqe.mcqe_cmpl));
3972 			break;
3973 		}
3974 		/* Free the completion event processed to the free pool */
3975 		lpfc_sli4_cq_event_release(phba, cq_event);
3976 	}
3977 }
3978 
3979 /**
3980  * lpfc_sli4_fcf_redisc_event_proc - Process fcf table rediscovery event
3981  * @phba: pointer to lpfc hba data structure.
3982  *
3983  * This routine is invoked by the worker thread to process FCF table
3984  * rediscovery pending completion event.
3985  **/
lpfc_sli4_fcf_redisc_event_proc(struct lpfc_hba * phba)3986 void lpfc_sli4_fcf_redisc_event_proc(struct lpfc_hba *phba)
3987 {
3988 	int rc;
3989 
3990 	spin_lock_irq(&phba->hbalock);
3991 	/* Clear FCF rediscovery timeout event */
3992 	phba->fcf.fcf_flag &= ~FCF_REDISC_EVT;
3993 	/* Clear driver fast failover FCF record flag */
3994 	phba->fcf.failover_rec.flag = 0;
3995 	/* Set state for FCF fast failover */
3996 	phba->fcf.fcf_flag |= FCF_REDISC_FOV;
3997 	spin_unlock_irq(&phba->hbalock);
3998 
3999 	/* Scan FCF table from the first entry to re-discover SAN */
4000 	lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
4001 			"2777 Start post-quiescent FCF table scan\n");
4002 	rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
4003 	if (rc)
4004 		lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
4005 				"2747 Issue FCF scan read FCF mailbox "
4006 				"command failed 0x%x\n", rc);
4007 }
4008 
4009 /**
4010  * lpfc_api_table_setup - Set up per hba pci-device group func api jump table
4011  * @phba: pointer to lpfc hba data structure.
4012  * @dev_grp: The HBA PCI-Device group number.
4013  *
4014  * This routine is invoked to set up the per HBA PCI-Device group function
4015  * API jump table entries.
4016  *
4017  * Return: 0 if success, otherwise -ENODEV
4018  **/
4019 int
lpfc_api_table_setup(struct lpfc_hba * phba,uint8_t dev_grp)4020 lpfc_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
4021 {
4022 	int rc;
4023 
4024 	/* Set up lpfc PCI-device group */
4025 	phba->pci_dev_grp = dev_grp;
4026 
4027 	/* The LPFC_PCI_DEV_OC uses SLI4 */
4028 	if (dev_grp == LPFC_PCI_DEV_OC)
4029 		phba->sli_rev = LPFC_SLI_REV4;
4030 
4031 	/* Set up device INIT API function jump table */
4032 	rc = lpfc_init_api_table_setup(phba, dev_grp);
4033 	if (rc)
4034 		return -ENODEV;
4035 	/* Set up SCSI API function jump table */
4036 	rc = lpfc_scsi_api_table_setup(phba, dev_grp);
4037 	if (rc)
4038 		return -ENODEV;
4039 	/* Set up SLI API function jump table */
4040 	rc = lpfc_sli_api_table_setup(phba, dev_grp);
4041 	if (rc)
4042 		return -ENODEV;
4043 	/* Set up MBOX API function jump table */
4044 	rc = lpfc_mbox_api_table_setup(phba, dev_grp);
4045 	if (rc)
4046 		return -ENODEV;
4047 
4048 	return 0;
4049 }
4050 
4051 /**
4052  * lpfc_log_intr_mode - Log the active interrupt mode
4053  * @phba: pointer to lpfc hba data structure.
4054  * @intr_mode: active interrupt mode adopted.
4055  *
4056  * This routine it invoked to log the currently used active interrupt mode
4057  * to the device.
4058  **/
lpfc_log_intr_mode(struct lpfc_hba * phba,uint32_t intr_mode)4059 static void lpfc_log_intr_mode(struct lpfc_hba *phba, uint32_t intr_mode)
4060 {
4061 	switch (intr_mode) {
4062 	case 0:
4063 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4064 				"0470 Enable INTx interrupt mode.\n");
4065 		break;
4066 	case 1:
4067 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4068 				"0481 Enabled MSI interrupt mode.\n");
4069 		break;
4070 	case 2:
4071 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4072 				"0480 Enabled MSI-X interrupt mode.\n");
4073 		break;
4074 	default:
4075 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4076 				"0482 Illegal interrupt mode.\n");
4077 		break;
4078 	}
4079 	return;
4080 }
4081 
4082 /**
4083  * lpfc_enable_pci_dev - Enable a generic PCI device.
4084  * @phba: pointer to lpfc hba data structure.
4085  *
4086  * This routine is invoked to enable the PCI device that is common to all
4087  * PCI devices.
4088  *
4089  * Return codes
4090  * 	0 - successful
4091  * 	other values - error
4092  **/
4093 static int
lpfc_enable_pci_dev(struct lpfc_hba * phba)4094 lpfc_enable_pci_dev(struct lpfc_hba *phba)
4095 {
4096 	struct pci_dev *pdev;
4097 	int bars = 0;
4098 
4099 	/* Obtain PCI device reference */
4100 	if (!phba->pcidev)
4101 		goto out_error;
4102 	else
4103 		pdev = phba->pcidev;
4104 	/* Select PCI BARs */
4105 	bars = pci_select_bars(pdev, IORESOURCE_MEM);
4106 	/* Enable PCI device */
4107 	if (pci_enable_device_mem(pdev))
4108 		goto out_error;
4109 	/* Request PCI resource for the device */
4110 	if (pci_request_selected_regions(pdev, bars, LPFC_DRIVER_NAME))
4111 		goto out_disable_device;
4112 	/* Set up device as PCI master and save state for EEH */
4113 	pci_set_master(pdev);
4114 	pci_try_set_mwi(pdev);
4115 	pci_save_state(pdev);
4116 
4117 	/* PCIe EEH recovery on powerpc platforms needs fundamental reset */
4118 	if (pci_find_capability(pdev, PCI_CAP_ID_EXP))
4119 		pdev->needs_freset = 1;
4120 
4121 	return 0;
4122 
4123 out_disable_device:
4124 	pci_disable_device(pdev);
4125 out_error:
4126 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4127 			"1401 Failed to enable pci device, bars:x%x\n", bars);
4128 	return -ENODEV;
4129 }
4130 
4131 /**
4132  * lpfc_disable_pci_dev - Disable a generic PCI device.
4133  * @phba: pointer to lpfc hba data structure.
4134  *
4135  * This routine is invoked to disable the PCI device that is common to all
4136  * PCI devices.
4137  **/
4138 static void
lpfc_disable_pci_dev(struct lpfc_hba * phba)4139 lpfc_disable_pci_dev(struct lpfc_hba *phba)
4140 {
4141 	struct pci_dev *pdev;
4142 	int bars;
4143 
4144 	/* Obtain PCI device reference */
4145 	if (!phba->pcidev)
4146 		return;
4147 	else
4148 		pdev = phba->pcidev;
4149 	/* Select PCI BARs */
4150 	bars = pci_select_bars(pdev, IORESOURCE_MEM);
4151 	/* Release PCI resource and disable PCI device */
4152 	pci_release_selected_regions(pdev, bars);
4153 	pci_disable_device(pdev);
4154 	/* Null out PCI private reference to driver */
4155 	pci_set_drvdata(pdev, NULL);
4156 
4157 	return;
4158 }
4159 
4160 /**
4161  * lpfc_reset_hba - Reset a hba
4162  * @phba: pointer to lpfc hba data structure.
4163  *
4164  * This routine is invoked to reset a hba device. It brings the HBA
4165  * offline, performs a board restart, and then brings the board back
4166  * online. The lpfc_offline calls lpfc_sli_hba_down which will clean up
4167  * on outstanding mailbox commands.
4168  **/
4169 void
lpfc_reset_hba(struct lpfc_hba * phba)4170 lpfc_reset_hba(struct lpfc_hba *phba)
4171 {
4172 	/* If resets are disabled then set error state and return. */
4173 	if (!phba->cfg_enable_hba_reset) {
4174 		phba->link_state = LPFC_HBA_ERROR;
4175 		return;
4176 	}
4177 	lpfc_offline_prep(phba);
4178 	lpfc_offline(phba);
4179 	lpfc_sli_brdrestart(phba);
4180 	lpfc_online(phba);
4181 	lpfc_unblock_mgmt_io(phba);
4182 }
4183 
4184 /**
4185  * lpfc_sli_sriov_nr_virtfn_get - Get the number of sr-iov virtual functions
4186  * @phba: pointer to lpfc hba data structure.
4187  *
4188  * This function enables the PCI SR-IOV virtual functions to a physical
4189  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
4190  * enable the number of virtual functions to the physical function. As
4191  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
4192  * API call does not considered as an error condition for most of the device.
4193  **/
4194 uint16_t
lpfc_sli_sriov_nr_virtfn_get(struct lpfc_hba * phba)4195 lpfc_sli_sriov_nr_virtfn_get(struct lpfc_hba *phba)
4196 {
4197 	struct pci_dev *pdev = phba->pcidev;
4198 	uint16_t nr_virtfn;
4199 	int pos;
4200 
4201 	pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
4202 	if (pos == 0)
4203 		return 0;
4204 
4205 	pci_read_config_word(pdev, pos + PCI_SRIOV_TOTAL_VF, &nr_virtfn);
4206 	return nr_virtfn;
4207 }
4208 
4209 /**
4210  * lpfc_sli_probe_sriov_nr_virtfn - Enable a number of sr-iov virtual functions
4211  * @phba: pointer to lpfc hba data structure.
4212  * @nr_vfn: number of virtual functions to be enabled.
4213  *
4214  * This function enables the PCI SR-IOV virtual functions to a physical
4215  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
4216  * enable the number of virtual functions to the physical function. As
4217  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
4218  * API call does not considered as an error condition for most of the device.
4219  **/
4220 int
lpfc_sli_probe_sriov_nr_virtfn(struct lpfc_hba * phba,int nr_vfn)4221 lpfc_sli_probe_sriov_nr_virtfn(struct lpfc_hba *phba, int nr_vfn)
4222 {
4223 	struct pci_dev *pdev = phba->pcidev;
4224 	uint16_t max_nr_vfn;
4225 	int rc;
4226 
4227 	max_nr_vfn = lpfc_sli_sriov_nr_virtfn_get(phba);
4228 	if (nr_vfn > max_nr_vfn) {
4229 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4230 				"3057 Requested vfs (%d) greater than "
4231 				"supported vfs (%d)", nr_vfn, max_nr_vfn);
4232 		return -EINVAL;
4233 	}
4234 
4235 	rc = pci_enable_sriov(pdev, nr_vfn);
4236 	if (rc) {
4237 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4238 				"2806 Failed to enable sriov on this device "
4239 				"with vfn number nr_vf:%d, rc:%d\n",
4240 				nr_vfn, rc);
4241 	} else
4242 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4243 				"2807 Successful enable sriov on this device "
4244 				"with vfn number nr_vf:%d\n", nr_vfn);
4245 	return rc;
4246 }
4247 
4248 /**
4249  * lpfc_sli_driver_resource_setup - Setup driver internal resources for SLI3 dev.
4250  * @phba: pointer to lpfc hba data structure.
4251  *
4252  * This routine is invoked to set up the driver internal resources specific to
4253  * support the SLI-3 HBA device it attached to.
4254  *
4255  * Return codes
4256  * 	0 - successful
4257  * 	other values - error
4258  **/
4259 static int
lpfc_sli_driver_resource_setup(struct lpfc_hba * phba)4260 lpfc_sli_driver_resource_setup(struct lpfc_hba *phba)
4261 {
4262 	struct lpfc_sli *psli;
4263 	int rc;
4264 
4265 	/*
4266 	 * Initialize timers used by driver
4267 	 */
4268 
4269 	/* Heartbeat timer */
4270 	init_timer(&phba->hb_tmofunc);
4271 	phba->hb_tmofunc.function = lpfc_hb_timeout;
4272 	phba->hb_tmofunc.data = (unsigned long)phba;
4273 
4274 	psli = &phba->sli;
4275 	/* MBOX heartbeat timer */
4276 	init_timer(&psli->mbox_tmo);
4277 	psli->mbox_tmo.function = lpfc_mbox_timeout;
4278 	psli->mbox_tmo.data = (unsigned long) phba;
4279 	/* FCP polling mode timer */
4280 	init_timer(&phba->fcp_poll_timer);
4281 	phba->fcp_poll_timer.function = lpfc_poll_timeout;
4282 	phba->fcp_poll_timer.data = (unsigned long) phba;
4283 	/* Fabric block timer */
4284 	init_timer(&phba->fabric_block_timer);
4285 	phba->fabric_block_timer.function = lpfc_fabric_block_timeout;
4286 	phba->fabric_block_timer.data = (unsigned long) phba;
4287 	/* EA polling mode timer */
4288 	init_timer(&phba->eratt_poll);
4289 	phba->eratt_poll.function = lpfc_poll_eratt;
4290 	phba->eratt_poll.data = (unsigned long) phba;
4291 
4292 	/* Host attention work mask setup */
4293 	phba->work_ha_mask = (HA_ERATT | HA_MBATT | HA_LATT);
4294 	phba->work_ha_mask |= (HA_RXMASK << (LPFC_ELS_RING * 4));
4295 
4296 	/* Get all the module params for configuring this host */
4297 	lpfc_get_cfgparam(phba);
4298 	if (phba->pcidev->device == PCI_DEVICE_ID_HORNET) {
4299 		phba->menlo_flag |= HBA_MENLO_SUPPORT;
4300 		/* check for menlo minimum sg count */
4301 		if (phba->cfg_sg_seg_cnt < LPFC_DEFAULT_MENLO_SG_SEG_CNT)
4302 			phba->cfg_sg_seg_cnt = LPFC_DEFAULT_MENLO_SG_SEG_CNT;
4303 	}
4304 
4305 	/*
4306 	 * Since the sg_tablesize is module parameter, the sg_dma_buf_size
4307 	 * used to create the sg_dma_buf_pool must be dynamically calculated.
4308 	 * 2 segments are added since the IOCB needs a command and response bde.
4309 	 */
4310 	phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
4311 		sizeof(struct fcp_rsp) +
4312 			((phba->cfg_sg_seg_cnt + 2) * sizeof(struct ulp_bde64));
4313 
4314 	if (phba->cfg_enable_bg) {
4315 		phba->cfg_sg_seg_cnt = LPFC_MAX_SG_SEG_CNT;
4316 		phba->cfg_sg_dma_buf_size +=
4317 			phba->cfg_prot_sg_seg_cnt * sizeof(struct ulp_bde64);
4318 	}
4319 
4320 	/* Also reinitialize the host templates with new values. */
4321 	lpfc_vport_template.sg_tablesize = phba->cfg_sg_seg_cnt;
4322 	lpfc_template.sg_tablesize = phba->cfg_sg_seg_cnt;
4323 
4324 	phba->max_vpi = LPFC_MAX_VPI;
4325 	/* This will be set to correct value after config_port mbox */
4326 	phba->max_vports = 0;
4327 
4328 	/*
4329 	 * Initialize the SLI Layer to run with lpfc HBAs.
4330 	 */
4331 	lpfc_sli_setup(phba);
4332 	lpfc_sli_queue_setup(phba);
4333 
4334 	/* Allocate device driver memory */
4335 	if (lpfc_mem_alloc(phba, BPL_ALIGN_SZ))
4336 		return -ENOMEM;
4337 
4338 	/*
4339 	 * Enable sr-iov virtual functions if supported and configured
4340 	 * through the module parameter.
4341 	 */
4342 	if (phba->cfg_sriov_nr_virtfn > 0) {
4343 		rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
4344 						 phba->cfg_sriov_nr_virtfn);
4345 		if (rc) {
4346 			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4347 					"2808 Requested number of SR-IOV "
4348 					"virtual functions (%d) is not "
4349 					"supported\n",
4350 					phba->cfg_sriov_nr_virtfn);
4351 			phba->cfg_sriov_nr_virtfn = 0;
4352 		}
4353 	}
4354 
4355 	return 0;
4356 }
4357 
4358 /**
4359  * lpfc_sli_driver_resource_unset - Unset drvr internal resources for SLI3 dev
4360  * @phba: pointer to lpfc hba data structure.
4361  *
4362  * This routine is invoked to unset the driver internal resources set up
4363  * specific for supporting the SLI-3 HBA device it attached to.
4364  **/
4365 static void
lpfc_sli_driver_resource_unset(struct lpfc_hba * phba)4366 lpfc_sli_driver_resource_unset(struct lpfc_hba *phba)
4367 {
4368 	/* Free device driver memory allocated */
4369 	lpfc_mem_free_all(phba);
4370 
4371 	return;
4372 }
4373 
4374 /**
4375  * lpfc_sli4_driver_resource_setup - Setup drvr internal resources for SLI4 dev
4376  * @phba: pointer to lpfc hba data structure.
4377  *
4378  * This routine is invoked to set up the driver internal resources specific to
4379  * support the SLI-4 HBA device it attached to.
4380  *
4381  * Return codes
4382  * 	0 - successful
4383  * 	other values - error
4384  **/
4385 static int
lpfc_sli4_driver_resource_setup(struct lpfc_hba * phba)4386 lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
4387 {
4388 	struct lpfc_sli *psli;
4389 	LPFC_MBOXQ_t *mboxq;
4390 	int rc, i, hbq_count, buf_size, dma_buf_size, max_buf_size;
4391 	uint8_t pn_page[LPFC_MAX_SUPPORTED_PAGES] = {0};
4392 	struct lpfc_mqe *mqe;
4393 	int longs, sli_family;
4394 	int sges_per_segment;
4395 
4396 	/* Before proceed, wait for POST done and device ready */
4397 	rc = lpfc_sli4_post_status_check(phba);
4398 	if (rc)
4399 		return -ENODEV;
4400 
4401 	/*
4402 	 * Initialize timers used by driver
4403 	 */
4404 
4405 	/* Heartbeat timer */
4406 	init_timer(&phba->hb_tmofunc);
4407 	phba->hb_tmofunc.function = lpfc_hb_timeout;
4408 	phba->hb_tmofunc.data = (unsigned long)phba;
4409 	init_timer(&phba->rrq_tmr);
4410 	phba->rrq_tmr.function = lpfc_rrq_timeout;
4411 	phba->rrq_tmr.data = (unsigned long)phba;
4412 
4413 	psli = &phba->sli;
4414 	/* MBOX heartbeat timer */
4415 	init_timer(&psli->mbox_tmo);
4416 	psli->mbox_tmo.function = lpfc_mbox_timeout;
4417 	psli->mbox_tmo.data = (unsigned long) phba;
4418 	/* Fabric block timer */
4419 	init_timer(&phba->fabric_block_timer);
4420 	phba->fabric_block_timer.function = lpfc_fabric_block_timeout;
4421 	phba->fabric_block_timer.data = (unsigned long) phba;
4422 	/* EA polling mode timer */
4423 	init_timer(&phba->eratt_poll);
4424 	phba->eratt_poll.function = lpfc_poll_eratt;
4425 	phba->eratt_poll.data = (unsigned long) phba;
4426 	/* FCF rediscover timer */
4427 	init_timer(&phba->fcf.redisc_wait);
4428 	phba->fcf.redisc_wait.function = lpfc_sli4_fcf_redisc_wait_tmo;
4429 	phba->fcf.redisc_wait.data = (unsigned long)phba;
4430 
4431 	/*
4432 	 * Control structure for handling external multi-buffer mailbox
4433 	 * command pass-through.
4434 	 */
4435 	memset((uint8_t *)&phba->mbox_ext_buf_ctx, 0,
4436 		sizeof(struct lpfc_mbox_ext_buf_ctx));
4437 	INIT_LIST_HEAD(&phba->mbox_ext_buf_ctx.ext_dmabuf_list);
4438 
4439 	/*
4440 	 * We need to do a READ_CONFIG mailbox command here before
4441 	 * calling lpfc_get_cfgparam. For VFs this will report the
4442 	 * MAX_XRI, MAX_VPI, MAX_RPI, MAX_IOCB, and MAX_VFI settings.
4443 	 * All of the resources allocated
4444 	 * for this Port are tied to these values.
4445 	 */
4446 	/* Get all the module params for configuring this host */
4447 	lpfc_get_cfgparam(phba);
4448 	phba->max_vpi = LPFC_MAX_VPI;
4449 	/* This will be set to correct value after the read_config mbox */
4450 	phba->max_vports = 0;
4451 
4452 	/* Program the default value of vlan_id and fc_map */
4453 	phba->valid_vlan = 0;
4454 	phba->fc_map[0] = LPFC_FCOE_FCF_MAP0;
4455 	phba->fc_map[1] = LPFC_FCOE_FCF_MAP1;
4456 	phba->fc_map[2] = LPFC_FCOE_FCF_MAP2;
4457 
4458 	/* With BlockGuard we can have multiple SGEs per Data Segemnt */
4459 	sges_per_segment = 1;
4460 	if (phba->cfg_enable_bg)
4461 		sges_per_segment = 2;
4462 
4463 	/*
4464 	 * Since the sg_tablesize is module parameter, the sg_dma_buf_size
4465 	 * used to create the sg_dma_buf_pool must be dynamically calculated.
4466 	 * 2 segments are added since the IOCB needs a command and response bde.
4467 	 * To insure that the scsi sgl does not cross a 4k page boundary only
4468 	 * sgl sizes of must be a power of 2.
4469 	 */
4470 	buf_size = (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp) +
4471 		    (((phba->cfg_sg_seg_cnt * sges_per_segment) + 2) *
4472 		    sizeof(struct sli4_sge)));
4473 
4474 	sli_family = bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf);
4475 	max_buf_size = LPFC_SLI4_MAX_BUF_SIZE;
4476 	switch (sli_family) {
4477 	case LPFC_SLI_INTF_FAMILY_BE2:
4478 	case LPFC_SLI_INTF_FAMILY_BE3:
4479 		/* There is a single hint for BE - 2 pages per BPL. */
4480 		if (bf_get(lpfc_sli_intf_sli_hint1, &phba->sli4_hba.sli_intf) ==
4481 		    LPFC_SLI_INTF_SLI_HINT1_1)
4482 			max_buf_size = LPFC_SLI4_FL1_MAX_BUF_SIZE;
4483 		break;
4484 	case LPFC_SLI_INTF_FAMILY_LNCR_A0:
4485 	case LPFC_SLI_INTF_FAMILY_LNCR_B0:
4486 	default:
4487 		break;
4488 	}
4489 
4490 	for (dma_buf_size = LPFC_SLI4_MIN_BUF_SIZE;
4491 	     dma_buf_size < max_buf_size && buf_size > dma_buf_size;
4492 	     dma_buf_size = dma_buf_size << 1)
4493 		;
4494 	if (dma_buf_size == max_buf_size)
4495 		phba->cfg_sg_seg_cnt = (dma_buf_size -
4496 			sizeof(struct fcp_cmnd) - sizeof(struct fcp_rsp) -
4497 			(2 * sizeof(struct sli4_sge))) /
4498 				sizeof(struct sli4_sge);
4499 	phba->cfg_sg_dma_buf_size = dma_buf_size;
4500 
4501 	/* Initialize buffer queue management fields */
4502 	hbq_count = lpfc_sli_hbq_count();
4503 	for (i = 0; i < hbq_count; ++i)
4504 		INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
4505 	INIT_LIST_HEAD(&phba->rb_pend_list);
4506 	phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_sli4_rb_alloc;
4507 	phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_sli4_rb_free;
4508 
4509 	/*
4510 	 * Initialize the SLI Layer to run with lpfc SLI4 HBAs.
4511 	 */
4512 	/* Initialize the Abort scsi buffer list used by driver */
4513 	spin_lock_init(&phba->sli4_hba.abts_scsi_buf_list_lock);
4514 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_scsi_buf_list);
4515 	/* This abort list used by worker thread */
4516 	spin_lock_init(&phba->sli4_hba.abts_sgl_list_lock);
4517 
4518 	/*
4519 	 * Initialize driver internal slow-path work queues
4520 	 */
4521 
4522 	/* Driver internel slow-path CQ Event pool */
4523 	INIT_LIST_HEAD(&phba->sli4_hba.sp_cqe_event_pool);
4524 	/* Response IOCB work queue list */
4525 	INIT_LIST_HEAD(&phba->sli4_hba.sp_queue_event);
4526 	/* Asynchronous event CQ Event work queue list */
4527 	INIT_LIST_HEAD(&phba->sli4_hba.sp_asynce_work_queue);
4528 	/* Fast-path XRI aborted CQ Event work queue list */
4529 	INIT_LIST_HEAD(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue);
4530 	/* Slow-path XRI aborted CQ Event work queue list */
4531 	INIT_LIST_HEAD(&phba->sli4_hba.sp_els_xri_aborted_work_queue);
4532 	/* Receive queue CQ Event work queue list */
4533 	INIT_LIST_HEAD(&phba->sli4_hba.sp_unsol_work_queue);
4534 
4535 	/* Initialize extent block lists. */
4536 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_blk_list);
4537 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_xri_blk_list);
4538 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_vfi_blk_list);
4539 	INIT_LIST_HEAD(&phba->lpfc_vpi_blk_list);
4540 
4541 	/* Initialize the driver internal SLI layer lists. */
4542 	lpfc_sli_setup(phba);
4543 	lpfc_sli_queue_setup(phba);
4544 
4545 	/* Allocate device driver memory */
4546 	rc = lpfc_mem_alloc(phba, SGL_ALIGN_SZ);
4547 	if (rc)
4548 		return -ENOMEM;
4549 
4550 	/* IF Type 2 ports get initialized now. */
4551 	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
4552 	    LPFC_SLI_INTF_IF_TYPE_2) {
4553 		rc = lpfc_pci_function_reset(phba);
4554 		if (unlikely(rc))
4555 			return -ENODEV;
4556 	}
4557 
4558 	/* Create the bootstrap mailbox command */
4559 	rc = lpfc_create_bootstrap_mbox(phba);
4560 	if (unlikely(rc))
4561 		goto out_free_mem;
4562 
4563 	/* Set up the host's endian order with the device. */
4564 	rc = lpfc_setup_endian_order(phba);
4565 	if (unlikely(rc))
4566 		goto out_free_bsmbx;
4567 
4568 	/* Set up the hba's configuration parameters. */
4569 	rc = lpfc_sli4_read_config(phba);
4570 	if (unlikely(rc))
4571 		goto out_free_bsmbx;
4572 
4573 	/* IF Type 0 ports get initialized now. */
4574 	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
4575 	    LPFC_SLI_INTF_IF_TYPE_0) {
4576 		rc = lpfc_pci_function_reset(phba);
4577 		if (unlikely(rc))
4578 			goto out_free_bsmbx;
4579 	}
4580 
4581 	mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
4582 						       GFP_KERNEL);
4583 	if (!mboxq) {
4584 		rc = -ENOMEM;
4585 		goto out_free_bsmbx;
4586 	}
4587 
4588 	/* Get the Supported Pages if PORT_CAPABILITIES is supported by port. */
4589 	lpfc_supported_pages(mboxq);
4590 	rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
4591 	if (!rc) {
4592 		mqe = &mboxq->u.mqe;
4593 		memcpy(&pn_page[0], ((uint8_t *)&mqe->un.supp_pages.word3),
4594 		       LPFC_MAX_SUPPORTED_PAGES);
4595 		for (i = 0; i < LPFC_MAX_SUPPORTED_PAGES; i++) {
4596 			switch (pn_page[i]) {
4597 			case LPFC_SLI4_PARAMETERS:
4598 				phba->sli4_hba.pc_sli4_params.supported = 1;
4599 				break;
4600 			default:
4601 				break;
4602 			}
4603 		}
4604 		/* Read the port's SLI4 Parameters capabilities if supported. */
4605 		if (phba->sli4_hba.pc_sli4_params.supported)
4606 			rc = lpfc_pc_sli4_params_get(phba, mboxq);
4607 		if (rc) {
4608 			mempool_free(mboxq, phba->mbox_mem_pool);
4609 			rc = -EIO;
4610 			goto out_free_bsmbx;
4611 		}
4612 	}
4613 	/*
4614 	 * Get sli4 parameters that override parameters from Port capabilities.
4615 	 * If this call fails, it isn't critical unless the SLI4 parameters come
4616 	 * back in conflict.
4617 	 */
4618 	rc = lpfc_get_sli4_parameters(phba, mboxq);
4619 	if (rc) {
4620 		if (phba->sli4_hba.extents_in_use &&
4621 		    phba->sli4_hba.rpi_hdrs_in_use) {
4622 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4623 				"2999 Unsupported SLI4 Parameters "
4624 				"Extents and RPI headers enabled.\n");
4625 			goto out_free_bsmbx;
4626 		}
4627 	}
4628 	mempool_free(mboxq, phba->mbox_mem_pool);
4629 	/* Verify all the SLI4 queues */
4630 	rc = lpfc_sli4_queue_verify(phba);
4631 	if (rc)
4632 		goto out_free_bsmbx;
4633 
4634 	/* Create driver internal CQE event pool */
4635 	rc = lpfc_sli4_cq_event_pool_create(phba);
4636 	if (rc)
4637 		goto out_free_bsmbx;
4638 
4639 	/* Initialize and populate the iocb list per host */
4640 	rc = lpfc_init_sgl_list(phba);
4641 	if (rc) {
4642 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4643 				"1400 Failed to initialize sgl list.\n");
4644 		goto out_destroy_cq_event_pool;
4645 	}
4646 	rc = lpfc_init_active_sgl_array(phba);
4647 	if (rc) {
4648 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4649 				"1430 Failed to initialize sgl list.\n");
4650 		goto out_free_sgl_list;
4651 	}
4652 	rc = lpfc_sli4_init_rpi_hdrs(phba);
4653 	if (rc) {
4654 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4655 				"1432 Failed to initialize rpi headers.\n");
4656 		goto out_free_active_sgl;
4657 	}
4658 
4659 	/* Allocate eligible FCF bmask memory for FCF roundrobin failover */
4660 	longs = (LPFC_SLI4_FCF_TBL_INDX_MAX + BITS_PER_LONG - 1)/BITS_PER_LONG;
4661 	phba->fcf.fcf_rr_bmask = kzalloc(longs * sizeof(unsigned long),
4662 					 GFP_KERNEL);
4663 	if (!phba->fcf.fcf_rr_bmask) {
4664 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4665 				"2759 Failed allocate memory for FCF round "
4666 				"robin failover bmask\n");
4667 		rc = -ENOMEM;
4668 		goto out_remove_rpi_hdrs;
4669 	}
4670 
4671 	/*
4672 	 * The cfg_fcp_eq_count can be zero whenever there is exactly one
4673 	 * interrupt vector.  This is not an error
4674 	 */
4675 	if (phba->cfg_fcp_eq_count) {
4676 		phba->sli4_hba.fcp_eq_hdl =
4677 				kzalloc((sizeof(struct lpfc_fcp_eq_hdl) *
4678 				    phba->cfg_fcp_eq_count), GFP_KERNEL);
4679 		if (!phba->sli4_hba.fcp_eq_hdl) {
4680 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4681 					"2572 Failed allocate memory for "
4682 					"fast-path per-EQ handle array\n");
4683 			rc = -ENOMEM;
4684 			goto out_free_fcf_rr_bmask;
4685 		}
4686 	}
4687 
4688 	phba->sli4_hba.msix_entries = kzalloc((sizeof(struct msix_entry) *
4689 				      phba->sli4_hba.cfg_eqn), GFP_KERNEL);
4690 	if (!phba->sli4_hba.msix_entries) {
4691 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4692 				"2573 Failed allocate memory for msi-x "
4693 				"interrupt vector entries\n");
4694 		rc = -ENOMEM;
4695 		goto out_free_fcp_eq_hdl;
4696 	}
4697 
4698 	/*
4699 	 * Enable sr-iov virtual functions if supported and configured
4700 	 * through the module parameter.
4701 	 */
4702 	if (phba->cfg_sriov_nr_virtfn > 0) {
4703 		rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
4704 						 phba->cfg_sriov_nr_virtfn);
4705 		if (rc) {
4706 			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4707 					"3020 Requested number of SR-IOV "
4708 					"virtual functions (%d) is not "
4709 					"supported\n",
4710 					phba->cfg_sriov_nr_virtfn);
4711 			phba->cfg_sriov_nr_virtfn = 0;
4712 		}
4713 	}
4714 
4715 	return 0;
4716 
4717 out_free_fcp_eq_hdl:
4718 	kfree(phba->sli4_hba.fcp_eq_hdl);
4719 out_free_fcf_rr_bmask:
4720 	kfree(phba->fcf.fcf_rr_bmask);
4721 out_remove_rpi_hdrs:
4722 	lpfc_sli4_remove_rpi_hdrs(phba);
4723 out_free_active_sgl:
4724 	lpfc_free_active_sgl(phba);
4725 out_free_sgl_list:
4726 	lpfc_free_sgl_list(phba);
4727 out_destroy_cq_event_pool:
4728 	lpfc_sli4_cq_event_pool_destroy(phba);
4729 out_free_bsmbx:
4730 	lpfc_destroy_bootstrap_mbox(phba);
4731 out_free_mem:
4732 	lpfc_mem_free(phba);
4733 	return rc;
4734 }
4735 
4736 /**
4737  * lpfc_sli4_driver_resource_unset - Unset drvr internal resources for SLI4 dev
4738  * @phba: pointer to lpfc hba data structure.
4739  *
4740  * This routine is invoked to unset the driver internal resources set up
4741  * specific for supporting the SLI-4 HBA device it attached to.
4742  **/
4743 static void
lpfc_sli4_driver_resource_unset(struct lpfc_hba * phba)4744 lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba)
4745 {
4746 	struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
4747 
4748 	/* Free memory allocated for msi-x interrupt vector entries */
4749 	kfree(phba->sli4_hba.msix_entries);
4750 
4751 	/* Free memory allocated for fast-path work queue handles */
4752 	kfree(phba->sli4_hba.fcp_eq_hdl);
4753 
4754 	/* Free the allocated rpi headers. */
4755 	lpfc_sli4_remove_rpi_hdrs(phba);
4756 	lpfc_sli4_remove_rpis(phba);
4757 
4758 	/* Free eligible FCF index bmask */
4759 	kfree(phba->fcf.fcf_rr_bmask);
4760 
4761 	/* Free the ELS sgl list */
4762 	lpfc_free_active_sgl(phba);
4763 	lpfc_free_sgl_list(phba);
4764 
4765 	/* Free the SCSI sgl management array */
4766 	kfree(phba->sli4_hba.lpfc_scsi_psb_array);
4767 
4768 	/* Free the completion queue EQ event pool */
4769 	lpfc_sli4_cq_event_release_all(phba);
4770 	lpfc_sli4_cq_event_pool_destroy(phba);
4771 
4772 	/* Release resource identifiers. */
4773 	lpfc_sli4_dealloc_resource_identifiers(phba);
4774 
4775 	/* Free the bsmbx region. */
4776 	lpfc_destroy_bootstrap_mbox(phba);
4777 
4778 	/* Free the SLI Layer memory with SLI4 HBAs */
4779 	lpfc_mem_free_all(phba);
4780 
4781 	/* Free the current connect table */
4782 	list_for_each_entry_safe(conn_entry, next_conn_entry,
4783 		&phba->fcf_conn_rec_list, list) {
4784 		list_del_init(&conn_entry->list);
4785 		kfree(conn_entry);
4786 	}
4787 
4788 	return;
4789 }
4790 
4791 /**
4792  * lpfc_init_api_table_setup - Set up init api function jump table
4793  * @phba: The hba struct for which this call is being executed.
4794  * @dev_grp: The HBA PCI-Device group number.
4795  *
4796  * This routine sets up the device INIT interface API function jump table
4797  * in @phba struct.
4798  *
4799  * Returns: 0 - success, -ENODEV - failure.
4800  **/
4801 int
lpfc_init_api_table_setup(struct lpfc_hba * phba,uint8_t dev_grp)4802 lpfc_init_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
4803 {
4804 	phba->lpfc_hba_init_link = lpfc_hba_init_link;
4805 	phba->lpfc_hba_down_link = lpfc_hba_down_link;
4806 	phba->lpfc_selective_reset = lpfc_selective_reset;
4807 	switch (dev_grp) {
4808 	case LPFC_PCI_DEV_LP:
4809 		phba->lpfc_hba_down_post = lpfc_hba_down_post_s3;
4810 		phba->lpfc_handle_eratt = lpfc_handle_eratt_s3;
4811 		phba->lpfc_stop_port = lpfc_stop_port_s3;
4812 		break;
4813 	case LPFC_PCI_DEV_OC:
4814 		phba->lpfc_hba_down_post = lpfc_hba_down_post_s4;
4815 		phba->lpfc_handle_eratt = lpfc_handle_eratt_s4;
4816 		phba->lpfc_stop_port = lpfc_stop_port_s4;
4817 		break;
4818 	default:
4819 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4820 				"1431 Invalid HBA PCI-device group: 0x%x\n",
4821 				dev_grp);
4822 		return -ENODEV;
4823 		break;
4824 	}
4825 	return 0;
4826 }
4827 
4828 /**
4829  * lpfc_setup_driver_resource_phase1 - Phase1 etup driver internal resources.
4830  * @phba: pointer to lpfc hba data structure.
4831  *
4832  * This routine is invoked to set up the driver internal resources before the
4833  * device specific resource setup to support the HBA device it attached to.
4834  *
4835  * Return codes
4836  *	0 - successful
4837  *	other values - error
4838  **/
4839 static int
lpfc_setup_driver_resource_phase1(struct lpfc_hba * phba)4840 lpfc_setup_driver_resource_phase1(struct lpfc_hba *phba)
4841 {
4842 	/*
4843 	 * Driver resources common to all SLI revisions
4844 	 */
4845 	atomic_set(&phba->fast_event_count, 0);
4846 	spin_lock_init(&phba->hbalock);
4847 
4848 	/* Initialize ndlp management spinlock */
4849 	spin_lock_init(&phba->ndlp_lock);
4850 
4851 	INIT_LIST_HEAD(&phba->port_list);
4852 	INIT_LIST_HEAD(&phba->work_list);
4853 	init_waitqueue_head(&phba->wait_4_mlo_m_q);
4854 
4855 	/* Initialize the wait queue head for the kernel thread */
4856 	init_waitqueue_head(&phba->work_waitq);
4857 
4858 	/* Initialize the scsi buffer list used by driver for scsi IO */
4859 	spin_lock_init(&phba->scsi_buf_list_lock);
4860 	INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list);
4861 
4862 	/* Initialize the fabric iocb list */
4863 	INIT_LIST_HEAD(&phba->fabric_iocb_list);
4864 
4865 	/* Initialize list to save ELS buffers */
4866 	INIT_LIST_HEAD(&phba->elsbuf);
4867 
4868 	/* Initialize FCF connection rec list */
4869 	INIT_LIST_HEAD(&phba->fcf_conn_rec_list);
4870 
4871 	return 0;
4872 }
4873 
4874 /**
4875  * lpfc_setup_driver_resource_phase2 - Phase2 setup driver internal resources.
4876  * @phba: pointer to lpfc hba data structure.
4877  *
4878  * This routine is invoked to set up the driver internal resources after the
4879  * device specific resource setup to support the HBA device it attached to.
4880  *
4881  * Return codes
4882  * 	0 - successful
4883  * 	other values - error
4884  **/
4885 static int
lpfc_setup_driver_resource_phase2(struct lpfc_hba * phba)4886 lpfc_setup_driver_resource_phase2(struct lpfc_hba *phba)
4887 {
4888 	int error;
4889 
4890 	/* Startup the kernel thread for this host adapter. */
4891 	phba->worker_thread = kthread_run(lpfc_do_work, phba,
4892 					  "lpfc_worker_%d", phba->brd_no);
4893 	if (IS_ERR(phba->worker_thread)) {
4894 		error = PTR_ERR(phba->worker_thread);
4895 		return error;
4896 	}
4897 
4898 	return 0;
4899 }
4900 
4901 /**
4902  * lpfc_unset_driver_resource_phase2 - Phase2 unset driver internal resources.
4903  * @phba: pointer to lpfc hba data structure.
4904  *
4905  * This routine is invoked to unset the driver internal resources set up after
4906  * the device specific resource setup for supporting the HBA device it
4907  * attached to.
4908  **/
4909 static void
lpfc_unset_driver_resource_phase2(struct lpfc_hba * phba)4910 lpfc_unset_driver_resource_phase2(struct lpfc_hba *phba)
4911 {
4912 	/* Stop kernel worker thread */
4913 	kthread_stop(phba->worker_thread);
4914 }
4915 
4916 /**
4917  * lpfc_free_iocb_list - Free iocb list.
4918  * @phba: pointer to lpfc hba data structure.
4919  *
4920  * This routine is invoked to free the driver's IOCB list and memory.
4921  **/
4922 static void
lpfc_free_iocb_list(struct lpfc_hba * phba)4923 lpfc_free_iocb_list(struct lpfc_hba *phba)
4924 {
4925 	struct lpfc_iocbq *iocbq_entry = NULL, *iocbq_next = NULL;
4926 
4927 	spin_lock_irq(&phba->hbalock);
4928 	list_for_each_entry_safe(iocbq_entry, iocbq_next,
4929 				 &phba->lpfc_iocb_list, list) {
4930 		list_del(&iocbq_entry->list);
4931 		kfree(iocbq_entry);
4932 		phba->total_iocbq_bufs--;
4933 	}
4934 	spin_unlock_irq(&phba->hbalock);
4935 
4936 	return;
4937 }
4938 
4939 /**
4940  * lpfc_init_iocb_list - Allocate and initialize iocb list.
4941  * @phba: pointer to lpfc hba data structure.
4942  *
4943  * This routine is invoked to allocate and initizlize the driver's IOCB
4944  * list and set up the IOCB tag array accordingly.
4945  *
4946  * Return codes
4947  *	0 - successful
4948  *	other values - error
4949  **/
4950 static int
lpfc_init_iocb_list(struct lpfc_hba * phba,int iocb_count)4951 lpfc_init_iocb_list(struct lpfc_hba *phba, int iocb_count)
4952 {
4953 	struct lpfc_iocbq *iocbq_entry = NULL;
4954 	uint16_t iotag;
4955 	int i;
4956 
4957 	/* Initialize and populate the iocb list per host.  */
4958 	INIT_LIST_HEAD(&phba->lpfc_iocb_list);
4959 	for (i = 0; i < iocb_count; i++) {
4960 		iocbq_entry = kzalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL);
4961 		if (iocbq_entry == NULL) {
4962 			printk(KERN_ERR "%s: only allocated %d iocbs of "
4963 				"expected %d count. Unloading driver.\n",
4964 				__func__, i, LPFC_IOCB_LIST_CNT);
4965 			goto out_free_iocbq;
4966 		}
4967 
4968 		iotag = lpfc_sli_next_iotag(phba, iocbq_entry);
4969 		if (iotag == 0) {
4970 			kfree(iocbq_entry);
4971 			printk(KERN_ERR "%s: failed to allocate IOTAG. "
4972 				"Unloading driver.\n", __func__);
4973 			goto out_free_iocbq;
4974 		}
4975 		iocbq_entry->sli4_lxritag = NO_XRI;
4976 		iocbq_entry->sli4_xritag = NO_XRI;
4977 
4978 		spin_lock_irq(&phba->hbalock);
4979 		list_add(&iocbq_entry->list, &phba->lpfc_iocb_list);
4980 		phba->total_iocbq_bufs++;
4981 		spin_unlock_irq(&phba->hbalock);
4982 	}
4983 
4984 	return 0;
4985 
4986 out_free_iocbq:
4987 	lpfc_free_iocb_list(phba);
4988 
4989 	return -ENOMEM;
4990 }
4991 
4992 /**
4993  * lpfc_free_sgl_list - Free sgl list.
4994  * @phba: pointer to lpfc hba data structure.
4995  *
4996  * This routine is invoked to free the driver's sgl list and memory.
4997  **/
4998 static void
lpfc_free_sgl_list(struct lpfc_hba * phba)4999 lpfc_free_sgl_list(struct lpfc_hba *phba)
5000 {
5001 	struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
5002 	LIST_HEAD(sglq_list);
5003 
5004 	spin_lock_irq(&phba->hbalock);
5005 	list_splice_init(&phba->sli4_hba.lpfc_sgl_list, &sglq_list);
5006 	spin_unlock_irq(&phba->hbalock);
5007 
5008 	list_for_each_entry_safe(sglq_entry, sglq_next,
5009 				 &sglq_list, list) {
5010 		list_del(&sglq_entry->list);
5011 		lpfc_mbuf_free(phba, sglq_entry->virt, sglq_entry->phys);
5012 		kfree(sglq_entry);
5013 		phba->sli4_hba.total_sglq_bufs--;
5014 	}
5015 	kfree(phba->sli4_hba.lpfc_els_sgl_array);
5016 }
5017 
5018 /**
5019  * lpfc_init_active_sgl_array - Allocate the buf to track active ELS XRIs.
5020  * @phba: pointer to lpfc hba data structure.
5021  *
5022  * This routine is invoked to allocate the driver's active sgl memory.
5023  * This array will hold the sglq_entry's for active IOs.
5024  **/
5025 static int
lpfc_init_active_sgl_array(struct lpfc_hba * phba)5026 lpfc_init_active_sgl_array(struct lpfc_hba *phba)
5027 {
5028 	int size;
5029 	size = sizeof(struct lpfc_sglq *);
5030 	size *= phba->sli4_hba.max_cfg_param.max_xri;
5031 
5032 	phba->sli4_hba.lpfc_sglq_active_list =
5033 		kzalloc(size, GFP_KERNEL);
5034 	if (!phba->sli4_hba.lpfc_sglq_active_list)
5035 		return -ENOMEM;
5036 	return 0;
5037 }
5038 
5039 /**
5040  * lpfc_free_active_sgl - Free the buf that tracks active ELS XRIs.
5041  * @phba: pointer to lpfc hba data structure.
5042  *
5043  * This routine is invoked to walk through the array of active sglq entries
5044  * and free all of the resources.
5045  * This is just a place holder for now.
5046  **/
5047 static void
lpfc_free_active_sgl(struct lpfc_hba * phba)5048 lpfc_free_active_sgl(struct lpfc_hba *phba)
5049 {
5050 	kfree(phba->sli4_hba.lpfc_sglq_active_list);
5051 }
5052 
5053 /**
5054  * lpfc_init_sgl_list - Allocate and initialize sgl list.
5055  * @phba: pointer to lpfc hba data structure.
5056  *
5057  * This routine is invoked to allocate and initizlize the driver's sgl
5058  * list and set up the sgl xritag tag array accordingly.
5059  *
5060  * Return codes
5061  *	0 - successful
5062  *	other values - error
5063  **/
5064 static int
lpfc_init_sgl_list(struct lpfc_hba * phba)5065 lpfc_init_sgl_list(struct lpfc_hba *phba)
5066 {
5067 	struct lpfc_sglq *sglq_entry = NULL;
5068 	int i;
5069 	int els_xri_cnt;
5070 
5071 	els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
5072 	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5073 				"2400 ELS XRI count %d.\n",
5074 				els_xri_cnt);
5075 	/* Initialize and populate the sglq list per host/VF. */
5076 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_sgl_list);
5077 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_els_sgl_list);
5078 
5079 	/* Sanity check on XRI management */
5080 	if (phba->sli4_hba.max_cfg_param.max_xri <= els_xri_cnt) {
5081 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5082 				"2562 No room left for SCSI XRI allocation: "
5083 				"max_xri=%d, els_xri=%d\n",
5084 				phba->sli4_hba.max_cfg_param.max_xri,
5085 				els_xri_cnt);
5086 		return -ENOMEM;
5087 	}
5088 
5089 	/* Allocate memory for the ELS XRI management array */
5090 	phba->sli4_hba.lpfc_els_sgl_array =
5091 			kzalloc((sizeof(struct lpfc_sglq *) * els_xri_cnt),
5092 			GFP_KERNEL);
5093 
5094 	if (!phba->sli4_hba.lpfc_els_sgl_array) {
5095 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5096 				"2401 Failed to allocate memory for ELS "
5097 				"XRI management array of size %d.\n",
5098 				els_xri_cnt);
5099 		return -ENOMEM;
5100 	}
5101 
5102 	/* Keep the SCSI XRI into the XRI management array */
5103 	phba->sli4_hba.scsi_xri_max =
5104 			phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;
5105 	phba->sli4_hba.scsi_xri_cnt = 0;
5106 	phba->sli4_hba.lpfc_scsi_psb_array =
5107 			kzalloc((sizeof(struct lpfc_scsi_buf *) *
5108 			phba->sli4_hba.scsi_xri_max), GFP_KERNEL);
5109 
5110 	if (!phba->sli4_hba.lpfc_scsi_psb_array) {
5111 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5112 				"2563 Failed to allocate memory for SCSI "
5113 				"XRI management array of size %d.\n",
5114 				phba->sli4_hba.scsi_xri_max);
5115 		kfree(phba->sli4_hba.lpfc_els_sgl_array);
5116 		return -ENOMEM;
5117 	}
5118 
5119 	for (i = 0; i < els_xri_cnt; i++) {
5120 		sglq_entry = kzalloc(sizeof(struct lpfc_sglq), GFP_KERNEL);
5121 		if (sglq_entry == NULL) {
5122 			printk(KERN_ERR "%s: only allocated %d sgls of "
5123 				"expected %d count. Unloading driver.\n",
5124 				__func__, i, els_xri_cnt);
5125 			goto out_free_mem;
5126 		}
5127 
5128 		sglq_entry->buff_type = GEN_BUFF_TYPE;
5129 		sglq_entry->virt = lpfc_mbuf_alloc(phba, 0, &sglq_entry->phys);
5130 		if (sglq_entry->virt == NULL) {
5131 			kfree(sglq_entry);
5132 			printk(KERN_ERR "%s: failed to allocate mbuf.\n"
5133 				"Unloading driver.\n", __func__);
5134 			goto out_free_mem;
5135 		}
5136 		sglq_entry->sgl = sglq_entry->virt;
5137 		memset(sglq_entry->sgl, 0, LPFC_BPL_SIZE);
5138 
5139 		/* The list order is used by later block SGL registraton */
5140 		spin_lock_irq(&phba->hbalock);
5141 		sglq_entry->state = SGL_FREED;
5142 		list_add_tail(&sglq_entry->list, &phba->sli4_hba.lpfc_sgl_list);
5143 		phba->sli4_hba.lpfc_els_sgl_array[i] = sglq_entry;
5144 		phba->sli4_hba.total_sglq_bufs++;
5145 		spin_unlock_irq(&phba->hbalock);
5146 	}
5147 	return 0;
5148 
5149 out_free_mem:
5150 	kfree(phba->sli4_hba.lpfc_scsi_psb_array);
5151 	lpfc_free_sgl_list(phba);
5152 	return -ENOMEM;
5153 }
5154 
5155 /**
5156  * lpfc_sli4_init_rpi_hdrs - Post the rpi header memory region to the port
5157  * @phba: pointer to lpfc hba data structure.
5158  *
5159  * This routine is invoked to post rpi header templates to the
5160  * port for those SLI4 ports that do not support extents.  This routine
5161  * posts a PAGE_SIZE memory region to the port to hold up to
5162  * PAGE_SIZE modulo 64 rpi context headers.  This is an initialization routine
5163  * and should be called only when interrupts are disabled.
5164  *
5165  * Return codes
5166  * 	0 - successful
5167  *	-ERROR - otherwise.
5168  **/
5169 int
lpfc_sli4_init_rpi_hdrs(struct lpfc_hba * phba)5170 lpfc_sli4_init_rpi_hdrs(struct lpfc_hba *phba)
5171 {
5172 	int rc = 0;
5173 	struct lpfc_rpi_hdr *rpi_hdr;
5174 
5175 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_hdr_list);
5176 	if (!phba->sli4_hba.rpi_hdrs_in_use)
5177 		return rc;
5178 	if (phba->sli4_hba.extents_in_use)
5179 		return -EIO;
5180 
5181 	rpi_hdr = lpfc_sli4_create_rpi_hdr(phba);
5182 	if (!rpi_hdr) {
5183 		lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
5184 				"0391 Error during rpi post operation\n");
5185 		lpfc_sli4_remove_rpis(phba);
5186 		rc = -ENODEV;
5187 	}
5188 
5189 	return rc;
5190 }
5191 
5192 /**
5193  * lpfc_sli4_create_rpi_hdr - Allocate an rpi header memory region
5194  * @phba: pointer to lpfc hba data structure.
5195  *
5196  * This routine is invoked to allocate a single 4KB memory region to
5197  * support rpis and stores them in the phba.  This single region
5198  * provides support for up to 64 rpis.  The region is used globally
5199  * by the device.
5200  *
5201  * Returns:
5202  *   A valid rpi hdr on success.
5203  *   A NULL pointer on any failure.
5204  **/
5205 struct lpfc_rpi_hdr *
lpfc_sli4_create_rpi_hdr(struct lpfc_hba * phba)5206 lpfc_sli4_create_rpi_hdr(struct lpfc_hba *phba)
5207 {
5208 	uint16_t rpi_limit, curr_rpi_range;
5209 	struct lpfc_dmabuf *dmabuf;
5210 	struct lpfc_rpi_hdr *rpi_hdr;
5211 	uint32_t rpi_count;
5212 
5213 	/*
5214 	 * If the SLI4 port supports extents, posting the rpi header isn't
5215 	 * required.  Set the expected maximum count and let the actual value
5216 	 * get set when extents are fully allocated.
5217 	 */
5218 	if (!phba->sli4_hba.rpi_hdrs_in_use)
5219 		return NULL;
5220 	if (phba->sli4_hba.extents_in_use)
5221 		return NULL;
5222 
5223 	/* The limit on the logical index is just the max_rpi count. */
5224 	rpi_limit = phba->sli4_hba.max_cfg_param.rpi_base +
5225 	phba->sli4_hba.max_cfg_param.max_rpi - 1;
5226 
5227 	spin_lock_irq(&phba->hbalock);
5228 	/*
5229 	 * Establish the starting RPI in this header block.  The starting
5230 	 * rpi is normalized to a zero base because the physical rpi is
5231 	 * port based.
5232 	 */
5233 	curr_rpi_range = phba->sli4_hba.next_rpi;
5234 	spin_unlock_irq(&phba->hbalock);
5235 
5236 	/*
5237 	 * The port has a limited number of rpis. The increment here
5238 	 * is LPFC_RPI_HDR_COUNT - 1 to account for the starting value
5239 	 * and to allow the full max_rpi range per port.
5240 	 */
5241 	if ((curr_rpi_range + (LPFC_RPI_HDR_COUNT - 1)) > rpi_limit)
5242 		rpi_count = rpi_limit - curr_rpi_range;
5243 	else
5244 		rpi_count = LPFC_RPI_HDR_COUNT;
5245 
5246 	if (!rpi_count)
5247 		return NULL;
5248 	/*
5249 	 * First allocate the protocol header region for the port.  The
5250 	 * port expects a 4KB DMA-mapped memory region that is 4K aligned.
5251 	 */
5252 	dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
5253 	if (!dmabuf)
5254 		return NULL;
5255 
5256 	dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
5257 					  LPFC_HDR_TEMPLATE_SIZE,
5258 					  &dmabuf->phys,
5259 					  GFP_KERNEL);
5260 	if (!dmabuf->virt) {
5261 		rpi_hdr = NULL;
5262 		goto err_free_dmabuf;
5263 	}
5264 
5265 	memset(dmabuf->virt, 0, LPFC_HDR_TEMPLATE_SIZE);
5266 	if (!IS_ALIGNED(dmabuf->phys, LPFC_HDR_TEMPLATE_SIZE)) {
5267 		rpi_hdr = NULL;
5268 		goto err_free_coherent;
5269 	}
5270 
5271 	/* Save the rpi header data for cleanup later. */
5272 	rpi_hdr = kzalloc(sizeof(struct lpfc_rpi_hdr), GFP_KERNEL);
5273 	if (!rpi_hdr)
5274 		goto err_free_coherent;
5275 
5276 	rpi_hdr->dmabuf = dmabuf;
5277 	rpi_hdr->len = LPFC_HDR_TEMPLATE_SIZE;
5278 	rpi_hdr->page_count = 1;
5279 	spin_lock_irq(&phba->hbalock);
5280 
5281 	/* The rpi_hdr stores the logical index only. */
5282 	rpi_hdr->start_rpi = curr_rpi_range;
5283 	list_add_tail(&rpi_hdr->list, &phba->sli4_hba.lpfc_rpi_hdr_list);
5284 
5285 	/*
5286 	 * The next_rpi stores the next logical module-64 rpi value used
5287 	 * to post physical rpis in subsequent rpi postings.
5288 	 */
5289 	phba->sli4_hba.next_rpi += rpi_count;
5290 	spin_unlock_irq(&phba->hbalock);
5291 	return rpi_hdr;
5292 
5293  err_free_coherent:
5294 	dma_free_coherent(&phba->pcidev->dev, LPFC_HDR_TEMPLATE_SIZE,
5295 			  dmabuf->virt, dmabuf->phys);
5296  err_free_dmabuf:
5297 	kfree(dmabuf);
5298 	return NULL;
5299 }
5300 
5301 /**
5302  * lpfc_sli4_remove_rpi_hdrs - Remove all rpi header memory regions
5303  * @phba: pointer to lpfc hba data structure.
5304  *
5305  * This routine is invoked to remove all memory resources allocated
5306  * to support rpis for SLI4 ports not supporting extents. This routine
5307  * presumes the caller has released all rpis consumed by fabric or port
5308  * logins and is prepared to have the header pages removed.
5309  **/
5310 void
lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba * phba)5311 lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba *phba)
5312 {
5313 	struct lpfc_rpi_hdr *rpi_hdr, *next_rpi_hdr;
5314 
5315 	if (!phba->sli4_hba.rpi_hdrs_in_use)
5316 		goto exit;
5317 
5318 	list_for_each_entry_safe(rpi_hdr, next_rpi_hdr,
5319 				 &phba->sli4_hba.lpfc_rpi_hdr_list, list) {
5320 		list_del(&rpi_hdr->list);
5321 		dma_free_coherent(&phba->pcidev->dev, rpi_hdr->len,
5322 				  rpi_hdr->dmabuf->virt, rpi_hdr->dmabuf->phys);
5323 		kfree(rpi_hdr->dmabuf);
5324 		kfree(rpi_hdr);
5325 	}
5326  exit:
5327 	/* There are no rpis available to the port now. */
5328 	phba->sli4_hba.next_rpi = 0;
5329 }
5330 
5331 /**
5332  * lpfc_hba_alloc - Allocate driver hba data structure for a device.
5333  * @pdev: pointer to pci device data structure.
5334  *
5335  * This routine is invoked to allocate the driver hba data structure for an
5336  * HBA device. If the allocation is successful, the phba reference to the
5337  * PCI device data structure is set.
5338  *
5339  * Return codes
5340  *      pointer to @phba - successful
5341  *      NULL - error
5342  **/
5343 static struct lpfc_hba *
lpfc_hba_alloc(struct pci_dev * pdev)5344 lpfc_hba_alloc(struct pci_dev *pdev)
5345 {
5346 	struct lpfc_hba *phba;
5347 
5348 	/* Allocate memory for HBA structure */
5349 	phba = kzalloc(sizeof(struct lpfc_hba), GFP_KERNEL);
5350 	if (!phba) {
5351 		dev_err(&pdev->dev, "failed to allocate hba struct\n");
5352 		return NULL;
5353 	}
5354 
5355 	/* Set reference to PCI device in HBA structure */
5356 	phba->pcidev = pdev;
5357 
5358 	/* Assign an unused board number */
5359 	phba->brd_no = lpfc_get_instance();
5360 	if (phba->brd_no < 0) {
5361 		kfree(phba);
5362 		return NULL;
5363 	}
5364 
5365 	spin_lock_init(&phba->ct_ev_lock);
5366 	INIT_LIST_HEAD(&phba->ct_ev_waiters);
5367 
5368 	return phba;
5369 }
5370 
5371 /**
5372  * lpfc_hba_free - Free driver hba data structure with a device.
5373  * @phba: pointer to lpfc hba data structure.
5374  *
5375  * This routine is invoked to free the driver hba data structure with an
5376  * HBA device.
5377  **/
5378 static void
lpfc_hba_free(struct lpfc_hba * phba)5379 lpfc_hba_free(struct lpfc_hba *phba)
5380 {
5381 	/* Release the driver assigned board number */
5382 	idr_remove(&lpfc_hba_index, phba->brd_no);
5383 
5384 	kfree(phba);
5385 	return;
5386 }
5387 
5388 /**
5389  * lpfc_create_shost - Create hba physical port with associated scsi host.
5390  * @phba: pointer to lpfc hba data structure.
5391  *
5392  * This routine is invoked to create HBA physical port and associate a SCSI
5393  * host with it.
5394  *
5395  * Return codes
5396  *      0 - successful
5397  *      other values - error
5398  **/
5399 static int
lpfc_create_shost(struct lpfc_hba * phba)5400 lpfc_create_shost(struct lpfc_hba *phba)
5401 {
5402 	struct lpfc_vport *vport;
5403 	struct Scsi_Host  *shost;
5404 
5405 	/* Initialize HBA FC structure */
5406 	phba->fc_edtov = FF_DEF_EDTOV;
5407 	phba->fc_ratov = FF_DEF_RATOV;
5408 	phba->fc_altov = FF_DEF_ALTOV;
5409 	phba->fc_arbtov = FF_DEF_ARBTOV;
5410 
5411 	atomic_set(&phba->sdev_cnt, 0);
5412 	vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev);
5413 	if (!vport)
5414 		return -ENODEV;
5415 
5416 	shost = lpfc_shost_from_vport(vport);
5417 	phba->pport = vport;
5418 	lpfc_debugfs_initialize(vport);
5419 	/* Put reference to SCSI host to driver's device private data */
5420 	pci_set_drvdata(phba->pcidev, shost);
5421 
5422 	return 0;
5423 }
5424 
5425 /**
5426  * lpfc_destroy_shost - Destroy hba physical port with associated scsi host.
5427  * @phba: pointer to lpfc hba data structure.
5428  *
5429  * This routine is invoked to destroy HBA physical port and the associated
5430  * SCSI host.
5431  **/
5432 static void
lpfc_destroy_shost(struct lpfc_hba * phba)5433 lpfc_destroy_shost(struct lpfc_hba *phba)
5434 {
5435 	struct lpfc_vport *vport = phba->pport;
5436 
5437 	/* Destroy physical port that associated with the SCSI host */
5438 	destroy_port(vport);
5439 
5440 	return;
5441 }
5442 
5443 /**
5444  * lpfc_setup_bg - Setup Block guard structures and debug areas.
5445  * @phba: pointer to lpfc hba data structure.
5446  * @shost: the shost to be used to detect Block guard settings.
5447  *
5448  * This routine sets up the local Block guard protocol settings for @shost.
5449  * This routine also allocates memory for debugging bg buffers.
5450  **/
5451 static void
lpfc_setup_bg(struct lpfc_hba * phba,struct Scsi_Host * shost)5452 lpfc_setup_bg(struct lpfc_hba *phba, struct Scsi_Host *shost)
5453 {
5454 	int pagecnt = 10;
5455 	if (lpfc_prot_mask && lpfc_prot_guard) {
5456 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5457 				"1478 Registering BlockGuard with the "
5458 				"SCSI layer\n");
5459 		scsi_host_set_prot(shost, lpfc_prot_mask);
5460 		scsi_host_set_guard(shost, lpfc_prot_guard);
5461 	}
5462 	if (!_dump_buf_data) {
5463 		while (pagecnt) {
5464 			spin_lock_init(&_dump_buf_lock);
5465 			_dump_buf_data =
5466 				(char *) __get_free_pages(GFP_KERNEL, pagecnt);
5467 			if (_dump_buf_data) {
5468 				lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5469 					"9043 BLKGRD: allocated %d pages for "
5470 				       "_dump_buf_data at 0x%p\n",
5471 				       (1 << pagecnt), _dump_buf_data);
5472 				_dump_buf_data_order = pagecnt;
5473 				memset(_dump_buf_data, 0,
5474 				       ((1 << PAGE_SHIFT) << pagecnt));
5475 				break;
5476 			} else
5477 				--pagecnt;
5478 		}
5479 		if (!_dump_buf_data_order)
5480 			lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5481 				"9044 BLKGRD: ERROR unable to allocate "
5482 			       "memory for hexdump\n");
5483 	} else
5484 		lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5485 			"9045 BLKGRD: already allocated _dump_buf_data=0x%p"
5486 		       "\n", _dump_buf_data);
5487 	if (!_dump_buf_dif) {
5488 		while (pagecnt) {
5489 			_dump_buf_dif =
5490 				(char *) __get_free_pages(GFP_KERNEL, pagecnt);
5491 			if (_dump_buf_dif) {
5492 				lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5493 					"9046 BLKGRD: allocated %d pages for "
5494 				       "_dump_buf_dif at 0x%p\n",
5495 				       (1 << pagecnt), _dump_buf_dif);
5496 				_dump_buf_dif_order = pagecnt;
5497 				memset(_dump_buf_dif, 0,
5498 				       ((1 << PAGE_SHIFT) << pagecnt));
5499 				break;
5500 			} else
5501 				--pagecnt;
5502 		}
5503 		if (!_dump_buf_dif_order)
5504 			lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5505 			"9047 BLKGRD: ERROR unable to allocate "
5506 			       "memory for hexdump\n");
5507 	} else
5508 		lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5509 			"9048 BLKGRD: already allocated _dump_buf_dif=0x%p\n",
5510 		       _dump_buf_dif);
5511 }
5512 
5513 /**
5514  * lpfc_post_init_setup - Perform necessary device post initialization setup.
5515  * @phba: pointer to lpfc hba data structure.
5516  *
5517  * This routine is invoked to perform all the necessary post initialization
5518  * setup for the device.
5519  **/
5520 static void
lpfc_post_init_setup(struct lpfc_hba * phba)5521 lpfc_post_init_setup(struct lpfc_hba *phba)
5522 {
5523 	struct Scsi_Host  *shost;
5524 	struct lpfc_adapter_event_header adapter_event;
5525 
5526 	/* Get the default values for Model Name and Description */
5527 	lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
5528 
5529 	/*
5530 	 * hba setup may have changed the hba_queue_depth so we need to
5531 	 * adjust the value of can_queue.
5532 	 */
5533 	shost = pci_get_drvdata(phba->pcidev);
5534 	shost->can_queue = phba->cfg_hba_queue_depth - 10;
5535 	if (phba->sli3_options & LPFC_SLI3_BG_ENABLED)
5536 		lpfc_setup_bg(phba, shost);
5537 
5538 	lpfc_host_attrib_init(shost);
5539 
5540 	if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
5541 		spin_lock_irq(shost->host_lock);
5542 		lpfc_poll_start_timer(phba);
5543 		spin_unlock_irq(shost->host_lock);
5544 	}
5545 
5546 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5547 			"0428 Perform SCSI scan\n");
5548 	/* Send board arrival event to upper layer */
5549 	adapter_event.event_type = FC_REG_ADAPTER_EVENT;
5550 	adapter_event.subcategory = LPFC_EVENT_ARRIVAL;
5551 	fc_host_post_vendor_event(shost, fc_get_event_number(),
5552 				  sizeof(adapter_event),
5553 				  (char *) &adapter_event,
5554 				  LPFC_NL_VENDOR_ID);
5555 	return;
5556 }
5557 
5558 /**
5559  * lpfc_sli_pci_mem_setup - Setup SLI3 HBA PCI memory space.
5560  * @phba: pointer to lpfc hba data structure.
5561  *
5562  * This routine is invoked to set up the PCI device memory space for device
5563  * with SLI-3 interface spec.
5564  *
5565  * Return codes
5566  * 	0 - successful
5567  * 	other values - error
5568  **/
5569 static int
lpfc_sli_pci_mem_setup(struct lpfc_hba * phba)5570 lpfc_sli_pci_mem_setup(struct lpfc_hba *phba)
5571 {
5572 	struct pci_dev *pdev;
5573 	unsigned long bar0map_len, bar2map_len;
5574 	int i, hbq_count;
5575 	void *ptr;
5576 	int error = -ENODEV;
5577 
5578 	/* Obtain PCI device reference */
5579 	if (!phba->pcidev)
5580 		return error;
5581 	else
5582 		pdev = phba->pcidev;
5583 
5584 	/* Set the device DMA mask size */
5585 	if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0
5586 	 || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(64)) != 0) {
5587 		if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0
5588 		 || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(32)) != 0) {
5589 			return error;
5590 		}
5591 	}
5592 
5593 	/* Get the bus address of Bar0 and Bar2 and the number of bytes
5594 	 * required by each mapping.
5595 	 */
5596 	phba->pci_bar0_map = pci_resource_start(pdev, 0);
5597 	bar0map_len = pci_resource_len(pdev, 0);
5598 
5599 	phba->pci_bar2_map = pci_resource_start(pdev, 2);
5600 	bar2map_len = pci_resource_len(pdev, 2);
5601 
5602 	/* Map HBA SLIM to a kernel virtual address. */
5603 	phba->slim_memmap_p = ioremap(phba->pci_bar0_map, bar0map_len);
5604 	if (!phba->slim_memmap_p) {
5605 		dev_printk(KERN_ERR, &pdev->dev,
5606 			   "ioremap failed for SLIM memory.\n");
5607 		goto out;
5608 	}
5609 
5610 	/* Map HBA Control Registers to a kernel virtual address. */
5611 	phba->ctrl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len);
5612 	if (!phba->ctrl_regs_memmap_p) {
5613 		dev_printk(KERN_ERR, &pdev->dev,
5614 			   "ioremap failed for HBA control registers.\n");
5615 		goto out_iounmap_slim;
5616 	}
5617 
5618 	/* Allocate memory for SLI-2 structures */
5619 	phba->slim2p.virt = dma_alloc_coherent(&pdev->dev,
5620 					       SLI2_SLIM_SIZE,
5621 					       &phba->slim2p.phys,
5622 					       GFP_KERNEL);
5623 	if (!phba->slim2p.virt)
5624 		goto out_iounmap;
5625 
5626 	memset(phba->slim2p.virt, 0, SLI2_SLIM_SIZE);
5627 	phba->mbox = phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, mbx);
5628 	phba->mbox_ext = (phba->slim2p.virt +
5629 		offsetof(struct lpfc_sli2_slim, mbx_ext_words));
5630 	phba->pcb = (phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, pcb));
5631 	phba->IOCBs = (phba->slim2p.virt +
5632 		       offsetof(struct lpfc_sli2_slim, IOCBs));
5633 
5634 	phba->hbqslimp.virt = dma_alloc_coherent(&pdev->dev,
5635 						 lpfc_sli_hbq_size(),
5636 						 &phba->hbqslimp.phys,
5637 						 GFP_KERNEL);
5638 	if (!phba->hbqslimp.virt)
5639 		goto out_free_slim;
5640 
5641 	hbq_count = lpfc_sli_hbq_count();
5642 	ptr = phba->hbqslimp.virt;
5643 	for (i = 0; i < hbq_count; ++i) {
5644 		phba->hbqs[i].hbq_virt = ptr;
5645 		INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
5646 		ptr += (lpfc_hbq_defs[i]->entry_count *
5647 			sizeof(struct lpfc_hbq_entry));
5648 	}
5649 	phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_els_hbq_alloc;
5650 	phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_els_hbq_free;
5651 
5652 	memset(phba->hbqslimp.virt, 0, lpfc_sli_hbq_size());
5653 
5654 	INIT_LIST_HEAD(&phba->rb_pend_list);
5655 
5656 	phba->MBslimaddr = phba->slim_memmap_p;
5657 	phba->HAregaddr = phba->ctrl_regs_memmap_p + HA_REG_OFFSET;
5658 	phba->CAregaddr = phba->ctrl_regs_memmap_p + CA_REG_OFFSET;
5659 	phba->HSregaddr = phba->ctrl_regs_memmap_p + HS_REG_OFFSET;
5660 	phba->HCregaddr = phba->ctrl_regs_memmap_p + HC_REG_OFFSET;
5661 
5662 	return 0;
5663 
5664 out_free_slim:
5665 	dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
5666 			  phba->slim2p.virt, phba->slim2p.phys);
5667 out_iounmap:
5668 	iounmap(phba->ctrl_regs_memmap_p);
5669 out_iounmap_slim:
5670 	iounmap(phba->slim_memmap_p);
5671 out:
5672 	return error;
5673 }
5674 
5675 /**
5676  * lpfc_sli_pci_mem_unset - Unset SLI3 HBA PCI memory space.
5677  * @phba: pointer to lpfc hba data structure.
5678  *
5679  * This routine is invoked to unset the PCI device memory space for device
5680  * with SLI-3 interface spec.
5681  **/
5682 static void
lpfc_sli_pci_mem_unset(struct lpfc_hba * phba)5683 lpfc_sli_pci_mem_unset(struct lpfc_hba *phba)
5684 {
5685 	struct pci_dev *pdev;
5686 
5687 	/* Obtain PCI device reference */
5688 	if (!phba->pcidev)
5689 		return;
5690 	else
5691 		pdev = phba->pcidev;
5692 
5693 	/* Free coherent DMA memory allocated */
5694 	dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
5695 			  phba->hbqslimp.virt, phba->hbqslimp.phys);
5696 	dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
5697 			  phba->slim2p.virt, phba->slim2p.phys);
5698 
5699 	/* I/O memory unmap */
5700 	iounmap(phba->ctrl_regs_memmap_p);
5701 	iounmap(phba->slim_memmap_p);
5702 
5703 	return;
5704 }
5705 
5706 /**
5707  * lpfc_sli4_post_status_check - Wait for SLI4 POST done and check status
5708  * @phba: pointer to lpfc hba data structure.
5709  *
5710  * This routine is invoked to wait for SLI4 device Power On Self Test (POST)
5711  * done and check status.
5712  *
5713  * Return 0 if successful, otherwise -ENODEV.
5714  **/
5715 int
lpfc_sli4_post_status_check(struct lpfc_hba * phba)5716 lpfc_sli4_post_status_check(struct lpfc_hba *phba)
5717 {
5718 	struct lpfc_register portsmphr_reg, uerrlo_reg, uerrhi_reg;
5719 	struct lpfc_register reg_data;
5720 	int i, port_error = 0;
5721 	uint32_t if_type;
5722 
5723 	memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
5724 	memset(&reg_data, 0, sizeof(reg_data));
5725 	if (!phba->sli4_hba.PSMPHRregaddr)
5726 		return -ENODEV;
5727 
5728 	/* Wait up to 30 seconds for the SLI Port POST done and ready */
5729 	for (i = 0; i < 3000; i++) {
5730 		if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
5731 			&portsmphr_reg.word0) ||
5732 			(bf_get(lpfc_port_smphr_perr, &portsmphr_reg))) {
5733 			/* Port has a fatal POST error, break out */
5734 			port_error = -ENODEV;
5735 			break;
5736 		}
5737 		if (LPFC_POST_STAGE_PORT_READY ==
5738 		    bf_get(lpfc_port_smphr_port_status, &portsmphr_reg))
5739 			break;
5740 		msleep(10);
5741 	}
5742 
5743 	/*
5744 	 * If there was a port error during POST, then don't proceed with
5745 	 * other register reads as the data may not be valid.  Just exit.
5746 	 */
5747 	if (port_error) {
5748 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5749 			"1408 Port Failed POST - portsmphr=0x%x, "
5750 			"perr=x%x, sfi=x%x, nip=x%x, ipc=x%x, scr1=x%x, "
5751 			"scr2=x%x, hscratch=x%x, pstatus=x%x\n",
5752 			portsmphr_reg.word0,
5753 			bf_get(lpfc_port_smphr_perr, &portsmphr_reg),
5754 			bf_get(lpfc_port_smphr_sfi, &portsmphr_reg),
5755 			bf_get(lpfc_port_smphr_nip, &portsmphr_reg),
5756 			bf_get(lpfc_port_smphr_ipc, &portsmphr_reg),
5757 			bf_get(lpfc_port_smphr_scr1, &portsmphr_reg),
5758 			bf_get(lpfc_port_smphr_scr2, &portsmphr_reg),
5759 			bf_get(lpfc_port_smphr_host_scratch, &portsmphr_reg),
5760 			bf_get(lpfc_port_smphr_port_status, &portsmphr_reg));
5761 	} else {
5762 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5763 				"2534 Device Info: SLIFamily=0x%x, "
5764 				"SLIRev=0x%x, IFType=0x%x, SLIHint_1=0x%x, "
5765 				"SLIHint_2=0x%x, FT=0x%x\n",
5766 				bf_get(lpfc_sli_intf_sli_family,
5767 				       &phba->sli4_hba.sli_intf),
5768 				bf_get(lpfc_sli_intf_slirev,
5769 				       &phba->sli4_hba.sli_intf),
5770 				bf_get(lpfc_sli_intf_if_type,
5771 				       &phba->sli4_hba.sli_intf),
5772 				bf_get(lpfc_sli_intf_sli_hint1,
5773 				       &phba->sli4_hba.sli_intf),
5774 				bf_get(lpfc_sli_intf_sli_hint2,
5775 				       &phba->sli4_hba.sli_intf),
5776 				bf_get(lpfc_sli_intf_func_type,
5777 				       &phba->sli4_hba.sli_intf));
5778 		/*
5779 		 * Check for other Port errors during the initialization
5780 		 * process.  Fail the load if the port did not come up
5781 		 * correctly.
5782 		 */
5783 		if_type = bf_get(lpfc_sli_intf_if_type,
5784 				 &phba->sli4_hba.sli_intf);
5785 		switch (if_type) {
5786 		case LPFC_SLI_INTF_IF_TYPE_0:
5787 			phba->sli4_hba.ue_mask_lo =
5788 			      readl(phba->sli4_hba.u.if_type0.UEMASKLOregaddr);
5789 			phba->sli4_hba.ue_mask_hi =
5790 			      readl(phba->sli4_hba.u.if_type0.UEMASKHIregaddr);
5791 			uerrlo_reg.word0 =
5792 			      readl(phba->sli4_hba.u.if_type0.UERRLOregaddr);
5793 			uerrhi_reg.word0 =
5794 				readl(phba->sli4_hba.u.if_type0.UERRHIregaddr);
5795 			if ((~phba->sli4_hba.ue_mask_lo & uerrlo_reg.word0) ||
5796 			    (~phba->sli4_hba.ue_mask_hi & uerrhi_reg.word0)) {
5797 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5798 						"1422 Unrecoverable Error "
5799 						"Detected during POST "
5800 						"uerr_lo_reg=0x%x, "
5801 						"uerr_hi_reg=0x%x, "
5802 						"ue_mask_lo_reg=0x%x, "
5803 						"ue_mask_hi_reg=0x%x\n",
5804 						uerrlo_reg.word0,
5805 						uerrhi_reg.word0,
5806 						phba->sli4_hba.ue_mask_lo,
5807 						phba->sli4_hba.ue_mask_hi);
5808 				port_error = -ENODEV;
5809 			}
5810 			break;
5811 		case LPFC_SLI_INTF_IF_TYPE_2:
5812 			/* Final checks.  The port status should be clean. */
5813 			if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
5814 				&reg_data.word0) ||
5815 				(bf_get(lpfc_sliport_status_err, &reg_data) &&
5816 				 !bf_get(lpfc_sliport_status_rn, &reg_data))) {
5817 				phba->work_status[0] =
5818 					readl(phba->sli4_hba.u.if_type2.
5819 					      ERR1regaddr);
5820 				phba->work_status[1] =
5821 					readl(phba->sli4_hba.u.if_type2.
5822 					      ERR2regaddr);
5823 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5824 					"2888 Unrecoverable port error "
5825 					"following POST: port status reg "
5826 					"0x%x, port_smphr reg 0x%x, "
5827 					"error 1=0x%x, error 2=0x%x\n",
5828 					reg_data.word0,
5829 					portsmphr_reg.word0,
5830 					phba->work_status[0],
5831 					phba->work_status[1]);
5832 				port_error = -ENODEV;
5833 			}
5834 			break;
5835 		case LPFC_SLI_INTF_IF_TYPE_1:
5836 		default:
5837 			break;
5838 		}
5839 	}
5840 	return port_error;
5841 }
5842 
5843 /**
5844  * lpfc_sli4_bar0_register_memmap - Set up SLI4 BAR0 register memory map.
5845  * @phba: pointer to lpfc hba data structure.
5846  * @if_type:  The SLI4 interface type getting configured.
5847  *
5848  * This routine is invoked to set up SLI4 BAR0 PCI config space register
5849  * memory map.
5850  **/
5851 static void
lpfc_sli4_bar0_register_memmap(struct lpfc_hba * phba,uint32_t if_type)5852 lpfc_sli4_bar0_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
5853 {
5854 	switch (if_type) {
5855 	case LPFC_SLI_INTF_IF_TYPE_0:
5856 		phba->sli4_hba.u.if_type0.UERRLOregaddr =
5857 			phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_LO;
5858 		phba->sli4_hba.u.if_type0.UERRHIregaddr =
5859 			phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_HI;
5860 		phba->sli4_hba.u.if_type0.UEMASKLOregaddr =
5861 			phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_LO;
5862 		phba->sli4_hba.u.if_type0.UEMASKHIregaddr =
5863 			phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_HI;
5864 		phba->sli4_hba.SLIINTFregaddr =
5865 			phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
5866 		break;
5867 	case LPFC_SLI_INTF_IF_TYPE_2:
5868 		phba->sli4_hba.u.if_type2.ERR1regaddr =
5869 			phba->sli4_hba.conf_regs_memmap_p +
5870 						LPFC_CTL_PORT_ER1_OFFSET;
5871 		phba->sli4_hba.u.if_type2.ERR2regaddr =
5872 			phba->sli4_hba.conf_regs_memmap_p +
5873 						LPFC_CTL_PORT_ER2_OFFSET;
5874 		phba->sli4_hba.u.if_type2.CTRLregaddr =
5875 			phba->sli4_hba.conf_regs_memmap_p +
5876 						LPFC_CTL_PORT_CTL_OFFSET;
5877 		phba->sli4_hba.u.if_type2.STATUSregaddr =
5878 			phba->sli4_hba.conf_regs_memmap_p +
5879 						LPFC_CTL_PORT_STA_OFFSET;
5880 		phba->sli4_hba.SLIINTFregaddr =
5881 			phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
5882 		phba->sli4_hba.PSMPHRregaddr =
5883 			phba->sli4_hba.conf_regs_memmap_p +
5884 						LPFC_CTL_PORT_SEM_OFFSET;
5885 		phba->sli4_hba.RQDBregaddr =
5886 			phba->sli4_hba.conf_regs_memmap_p + LPFC_RQ_DOORBELL;
5887 		phba->sli4_hba.WQDBregaddr =
5888 			phba->sli4_hba.conf_regs_memmap_p + LPFC_WQ_DOORBELL;
5889 		phba->sli4_hba.EQCQDBregaddr =
5890 			phba->sli4_hba.conf_regs_memmap_p + LPFC_EQCQ_DOORBELL;
5891 		phba->sli4_hba.MQDBregaddr =
5892 			phba->sli4_hba.conf_regs_memmap_p + LPFC_MQ_DOORBELL;
5893 		phba->sli4_hba.BMBXregaddr =
5894 			phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
5895 		break;
5896 	case LPFC_SLI_INTF_IF_TYPE_1:
5897 	default:
5898 		dev_printk(KERN_ERR, &phba->pcidev->dev,
5899 			   "FATAL - unsupported SLI4 interface type - %d\n",
5900 			   if_type);
5901 		break;
5902 	}
5903 }
5904 
5905 /**
5906  * lpfc_sli4_bar1_register_memmap - Set up SLI4 BAR1 register memory map.
5907  * @phba: pointer to lpfc hba data structure.
5908  *
5909  * This routine is invoked to set up SLI4 BAR1 control status register (CSR)
5910  * memory map.
5911  **/
5912 static void
lpfc_sli4_bar1_register_memmap(struct lpfc_hba * phba)5913 lpfc_sli4_bar1_register_memmap(struct lpfc_hba *phba)
5914 {
5915 	phba->sli4_hba.PSMPHRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
5916 		LPFC_SLIPORT_IF0_SMPHR;
5917 	phba->sli4_hba.ISRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
5918 		LPFC_HST_ISR0;
5919 	phba->sli4_hba.IMRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
5920 		LPFC_HST_IMR0;
5921 	phba->sli4_hba.ISCRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
5922 		LPFC_HST_ISCR0;
5923 }
5924 
5925 /**
5926  * lpfc_sli4_bar2_register_memmap - Set up SLI4 BAR2 register memory map.
5927  * @phba: pointer to lpfc hba data structure.
5928  * @vf: virtual function number
5929  *
5930  * This routine is invoked to set up SLI4 BAR2 doorbell register memory map
5931  * based on the given viftual function number, @vf.
5932  *
5933  * Return 0 if successful, otherwise -ENODEV.
5934  **/
5935 static int
lpfc_sli4_bar2_register_memmap(struct lpfc_hba * phba,uint32_t vf)5936 lpfc_sli4_bar2_register_memmap(struct lpfc_hba *phba, uint32_t vf)
5937 {
5938 	if (vf > LPFC_VIR_FUNC_MAX)
5939 		return -ENODEV;
5940 
5941 	phba->sli4_hba.RQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5942 				vf * LPFC_VFR_PAGE_SIZE + LPFC_RQ_DOORBELL);
5943 	phba->sli4_hba.WQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5944 				vf * LPFC_VFR_PAGE_SIZE + LPFC_WQ_DOORBELL);
5945 	phba->sli4_hba.EQCQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5946 				vf * LPFC_VFR_PAGE_SIZE + LPFC_EQCQ_DOORBELL);
5947 	phba->sli4_hba.MQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5948 				vf * LPFC_VFR_PAGE_SIZE + LPFC_MQ_DOORBELL);
5949 	phba->sli4_hba.BMBXregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5950 				vf * LPFC_VFR_PAGE_SIZE + LPFC_BMBX);
5951 	return 0;
5952 }
5953 
5954 /**
5955  * lpfc_create_bootstrap_mbox - Create the bootstrap mailbox
5956  * @phba: pointer to lpfc hba data structure.
5957  *
5958  * This routine is invoked to create the bootstrap mailbox
5959  * region consistent with the SLI-4 interface spec.  This
5960  * routine allocates all memory necessary to communicate
5961  * mailbox commands to the port and sets up all alignment
5962  * needs.  No locks are expected to be held when calling
5963  * this routine.
5964  *
5965  * Return codes
5966  * 	0 - successful
5967  * 	-ENOMEM - could not allocated memory.
5968  **/
5969 static int
lpfc_create_bootstrap_mbox(struct lpfc_hba * phba)5970 lpfc_create_bootstrap_mbox(struct lpfc_hba *phba)
5971 {
5972 	uint32_t bmbx_size;
5973 	struct lpfc_dmabuf *dmabuf;
5974 	struct dma_address *dma_address;
5975 	uint32_t pa_addr;
5976 	uint64_t phys_addr;
5977 
5978 	dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
5979 	if (!dmabuf)
5980 		return -ENOMEM;
5981 
5982 	/*
5983 	 * The bootstrap mailbox region is comprised of 2 parts
5984 	 * plus an alignment restriction of 16 bytes.
5985 	 */
5986 	bmbx_size = sizeof(struct lpfc_bmbx_create) + (LPFC_ALIGN_16_BYTE - 1);
5987 	dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
5988 					  bmbx_size,
5989 					  &dmabuf->phys,
5990 					  GFP_KERNEL);
5991 	if (!dmabuf->virt) {
5992 		kfree(dmabuf);
5993 		return -ENOMEM;
5994 	}
5995 	memset(dmabuf->virt, 0, bmbx_size);
5996 
5997 	/*
5998 	 * Initialize the bootstrap mailbox pointers now so that the register
5999 	 * operations are simple later.  The mailbox dma address is required
6000 	 * to be 16-byte aligned.  Also align the virtual memory as each
6001 	 * maibox is copied into the bmbx mailbox region before issuing the
6002 	 * command to the port.
6003 	 */
6004 	phba->sli4_hba.bmbx.dmabuf = dmabuf;
6005 	phba->sli4_hba.bmbx.bmbx_size = bmbx_size;
6006 
6007 	phba->sli4_hba.bmbx.avirt = PTR_ALIGN(dmabuf->virt,
6008 					      LPFC_ALIGN_16_BYTE);
6009 	phba->sli4_hba.bmbx.aphys = ALIGN(dmabuf->phys,
6010 					      LPFC_ALIGN_16_BYTE);
6011 
6012 	/*
6013 	 * Set the high and low physical addresses now.  The SLI4 alignment
6014 	 * requirement is 16 bytes and the mailbox is posted to the port
6015 	 * as two 30-bit addresses.  The other data is a bit marking whether
6016 	 * the 30-bit address is the high or low address.
6017 	 * Upcast bmbx aphys to 64bits so shift instruction compiles
6018 	 * clean on 32 bit machines.
6019 	 */
6020 	dma_address = &phba->sli4_hba.bmbx.dma_address;
6021 	phys_addr = (uint64_t)phba->sli4_hba.bmbx.aphys;
6022 	pa_addr = (uint32_t) ((phys_addr >> 34) & 0x3fffffff);
6023 	dma_address->addr_hi = (uint32_t) ((pa_addr << 2) |
6024 					   LPFC_BMBX_BIT1_ADDR_HI);
6025 
6026 	pa_addr = (uint32_t) ((phba->sli4_hba.bmbx.aphys >> 4) & 0x3fffffff);
6027 	dma_address->addr_lo = (uint32_t) ((pa_addr << 2) |
6028 					   LPFC_BMBX_BIT1_ADDR_LO);
6029 	return 0;
6030 }
6031 
6032 /**
6033  * lpfc_destroy_bootstrap_mbox - Destroy all bootstrap mailbox resources
6034  * @phba: pointer to lpfc hba data structure.
6035  *
6036  * This routine is invoked to teardown the bootstrap mailbox
6037  * region and release all host resources. This routine requires
6038  * the caller to ensure all mailbox commands recovered, no
6039  * additional mailbox comands are sent, and interrupts are disabled
6040  * before calling this routine.
6041  *
6042  **/
6043 static void
lpfc_destroy_bootstrap_mbox(struct lpfc_hba * phba)6044 lpfc_destroy_bootstrap_mbox(struct lpfc_hba *phba)
6045 {
6046 	dma_free_coherent(&phba->pcidev->dev,
6047 			  phba->sli4_hba.bmbx.bmbx_size,
6048 			  phba->sli4_hba.bmbx.dmabuf->virt,
6049 			  phba->sli4_hba.bmbx.dmabuf->phys);
6050 
6051 	kfree(phba->sli4_hba.bmbx.dmabuf);
6052 	memset(&phba->sli4_hba.bmbx, 0, sizeof(struct lpfc_bmbx));
6053 }
6054 
6055 /**
6056  * lpfc_sli4_read_config - Get the config parameters.
6057  * @phba: pointer to lpfc hba data structure.
6058  *
6059  * This routine is invoked to read the configuration parameters from the HBA.
6060  * The configuration parameters are used to set the base and maximum values
6061  * for RPI's XRI's VPI's VFI's and FCFIs. These values also affect the resource
6062  * allocation for the port.
6063  *
6064  * Return codes
6065  * 	0 - successful
6066  * 	-ENOMEM - No available memory
6067  *      -EIO - The mailbox failed to complete successfully.
6068  **/
6069 int
lpfc_sli4_read_config(struct lpfc_hba * phba)6070 lpfc_sli4_read_config(struct lpfc_hba *phba)
6071 {
6072 	LPFC_MBOXQ_t *pmb;
6073 	struct lpfc_mbx_read_config *rd_config;
6074 	union  lpfc_sli4_cfg_shdr *shdr;
6075 	uint32_t shdr_status, shdr_add_status;
6076 	struct lpfc_mbx_get_func_cfg *get_func_cfg;
6077 	struct lpfc_rsrc_desc_fcfcoe *desc;
6078 	uint32_t desc_count;
6079 	int length, i, rc = 0;
6080 
6081 	pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6082 	if (!pmb) {
6083 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6084 				"2011 Unable to allocate memory for issuing "
6085 				"SLI_CONFIG_SPECIAL mailbox command\n");
6086 		return -ENOMEM;
6087 	}
6088 
6089 	lpfc_read_config(phba, pmb);
6090 
6091 	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
6092 	if (rc != MBX_SUCCESS) {
6093 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6094 			"2012 Mailbox failed , mbxCmd x%x "
6095 			"READ_CONFIG, mbxStatus x%x\n",
6096 			bf_get(lpfc_mqe_command, &pmb->u.mqe),
6097 			bf_get(lpfc_mqe_status, &pmb->u.mqe));
6098 		rc = -EIO;
6099 	} else {
6100 		rd_config = &pmb->u.mqe.un.rd_config;
6101 		if (bf_get(lpfc_mbx_rd_conf_lnk_ldv, rd_config)) {
6102 			phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_VAL;
6103 			phba->sli4_hba.lnk_info.lnk_tp =
6104 				bf_get(lpfc_mbx_rd_conf_lnk_type, rd_config);
6105 			phba->sli4_hba.lnk_info.lnk_no =
6106 				bf_get(lpfc_mbx_rd_conf_lnk_numb, rd_config);
6107 			lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
6108 					"3081 lnk_type:%d, lnk_numb:%d\n",
6109 					phba->sli4_hba.lnk_info.lnk_tp,
6110 					phba->sli4_hba.lnk_info.lnk_no);
6111 		} else
6112 			lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
6113 					"3082 Mailbox (x%x) returned ldv:x0\n",
6114 					bf_get(lpfc_mqe_command, &pmb->u.mqe));
6115 		phba->sli4_hba.extents_in_use =
6116 			bf_get(lpfc_mbx_rd_conf_extnts_inuse, rd_config);
6117 		phba->sli4_hba.max_cfg_param.max_xri =
6118 			bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);
6119 		phba->sli4_hba.max_cfg_param.xri_base =
6120 			bf_get(lpfc_mbx_rd_conf_xri_base, rd_config);
6121 		phba->sli4_hba.max_cfg_param.max_vpi =
6122 			bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config);
6123 		phba->sli4_hba.max_cfg_param.vpi_base =
6124 			bf_get(lpfc_mbx_rd_conf_vpi_base, rd_config);
6125 		phba->sli4_hba.max_cfg_param.max_rpi =
6126 			bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config);
6127 		phba->sli4_hba.max_cfg_param.rpi_base =
6128 			bf_get(lpfc_mbx_rd_conf_rpi_base, rd_config);
6129 		phba->sli4_hba.max_cfg_param.max_vfi =
6130 			bf_get(lpfc_mbx_rd_conf_vfi_count, rd_config);
6131 		phba->sli4_hba.max_cfg_param.vfi_base =
6132 			bf_get(lpfc_mbx_rd_conf_vfi_base, rd_config);
6133 		phba->sli4_hba.max_cfg_param.max_fcfi =
6134 			bf_get(lpfc_mbx_rd_conf_fcfi_count, rd_config);
6135 		phba->sli4_hba.max_cfg_param.max_eq =
6136 			bf_get(lpfc_mbx_rd_conf_eq_count, rd_config);
6137 		phba->sli4_hba.max_cfg_param.max_rq =
6138 			bf_get(lpfc_mbx_rd_conf_rq_count, rd_config);
6139 		phba->sli4_hba.max_cfg_param.max_wq =
6140 			bf_get(lpfc_mbx_rd_conf_wq_count, rd_config);
6141 		phba->sli4_hba.max_cfg_param.max_cq =
6142 			bf_get(lpfc_mbx_rd_conf_cq_count, rd_config);
6143 		phba->lmt = bf_get(lpfc_mbx_rd_conf_lmt, rd_config);
6144 		phba->sli4_hba.next_xri = phba->sli4_hba.max_cfg_param.xri_base;
6145 		phba->vpi_base = phba->sli4_hba.max_cfg_param.vpi_base;
6146 		phba->vfi_base = phba->sli4_hba.max_cfg_param.vfi_base;
6147 		phba->max_vpi = (phba->sli4_hba.max_cfg_param.max_vpi > 0) ?
6148 				(phba->sli4_hba.max_cfg_param.max_vpi - 1) : 0;
6149 		phba->max_vports = phba->max_vpi;
6150 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
6151 				"2003 cfg params Extents? %d "
6152 				"XRI(B:%d M:%d), "
6153 				"VPI(B:%d M:%d) "
6154 				"VFI(B:%d M:%d) "
6155 				"RPI(B:%d M:%d) "
6156 				"FCFI(Count:%d)\n",
6157 				phba->sli4_hba.extents_in_use,
6158 				phba->sli4_hba.max_cfg_param.xri_base,
6159 				phba->sli4_hba.max_cfg_param.max_xri,
6160 				phba->sli4_hba.max_cfg_param.vpi_base,
6161 				phba->sli4_hba.max_cfg_param.max_vpi,
6162 				phba->sli4_hba.max_cfg_param.vfi_base,
6163 				phba->sli4_hba.max_cfg_param.max_vfi,
6164 				phba->sli4_hba.max_cfg_param.rpi_base,
6165 				phba->sli4_hba.max_cfg_param.max_rpi,
6166 				phba->sli4_hba.max_cfg_param.max_fcfi);
6167 	}
6168 
6169 	if (rc)
6170 		goto read_cfg_out;
6171 
6172 	/* Reset the DFT_HBA_Q_DEPTH to the max xri  */
6173 	if (phba->cfg_hba_queue_depth >
6174 		(phba->sli4_hba.max_cfg_param.max_xri -
6175 			lpfc_sli4_get_els_iocb_cnt(phba)))
6176 		phba->cfg_hba_queue_depth =
6177 			phba->sli4_hba.max_cfg_param.max_xri -
6178 				lpfc_sli4_get_els_iocb_cnt(phba);
6179 
6180 	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
6181 	    LPFC_SLI_INTF_IF_TYPE_2)
6182 		goto read_cfg_out;
6183 
6184 	/* get the pf# and vf# for SLI4 if_type 2 port */
6185 	length = (sizeof(struct lpfc_mbx_get_func_cfg) -
6186 		  sizeof(struct lpfc_sli4_cfg_mhdr));
6187 	lpfc_sli4_config(phba, pmb, LPFC_MBOX_SUBSYSTEM_COMMON,
6188 			 LPFC_MBOX_OPCODE_GET_FUNCTION_CONFIG,
6189 			 length, LPFC_SLI4_MBX_EMBED);
6190 
6191 	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
6192 	shdr = (union lpfc_sli4_cfg_shdr *)
6193 				&pmb->u.mqe.un.sli4_config.header.cfg_shdr;
6194 	shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
6195 	shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
6196 	if (rc || shdr_status || shdr_add_status) {
6197 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6198 				"3026 Mailbox failed , mbxCmd x%x "
6199 				"GET_FUNCTION_CONFIG, mbxStatus x%x\n",
6200 				bf_get(lpfc_mqe_command, &pmb->u.mqe),
6201 				bf_get(lpfc_mqe_status, &pmb->u.mqe));
6202 		rc = -EIO;
6203 		goto read_cfg_out;
6204 	}
6205 
6206 	/* search for fc_fcoe resrouce descriptor */
6207 	get_func_cfg = &pmb->u.mqe.un.get_func_cfg;
6208 	desc_count = get_func_cfg->func_cfg.rsrc_desc_count;
6209 
6210 	for (i = 0; i < LPFC_RSRC_DESC_MAX_NUM; i++) {
6211 		desc = (struct lpfc_rsrc_desc_fcfcoe *)
6212 			&get_func_cfg->func_cfg.desc[i];
6213 		if (LPFC_RSRC_DESC_TYPE_FCFCOE ==
6214 		    bf_get(lpfc_rsrc_desc_pcie_type, desc)) {
6215 			phba->sli4_hba.iov.pf_number =
6216 				bf_get(lpfc_rsrc_desc_fcfcoe_pfnum, desc);
6217 			phba->sli4_hba.iov.vf_number =
6218 				bf_get(lpfc_rsrc_desc_fcfcoe_vfnum, desc);
6219 			break;
6220 		}
6221 	}
6222 
6223 	if (i < LPFC_RSRC_DESC_MAX_NUM)
6224 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
6225 				"3027 GET_FUNCTION_CONFIG: pf_number:%d, "
6226 				"vf_number:%d\n", phba->sli4_hba.iov.pf_number,
6227 				phba->sli4_hba.iov.vf_number);
6228 	else {
6229 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6230 				"3028 GET_FUNCTION_CONFIG: failed to find "
6231 				"Resrouce Descriptor:x%x\n",
6232 				LPFC_RSRC_DESC_TYPE_FCFCOE);
6233 		rc = -EIO;
6234 	}
6235 
6236 read_cfg_out:
6237 	mempool_free(pmb, phba->mbox_mem_pool);
6238 	return rc;
6239 }
6240 
6241 /**
6242  * lpfc_setup_endian_order - Write endian order to an SLI4 if_type 0 port.
6243  * @phba: pointer to lpfc hba data structure.
6244  *
6245  * This routine is invoked to setup the port-side endian order when
6246  * the port if_type is 0.  This routine has no function for other
6247  * if_types.
6248  *
6249  * Return codes
6250  * 	0 - successful
6251  * 	-ENOMEM - No available memory
6252  *      -EIO - The mailbox failed to complete successfully.
6253  **/
6254 static int
lpfc_setup_endian_order(struct lpfc_hba * phba)6255 lpfc_setup_endian_order(struct lpfc_hba *phba)
6256 {
6257 	LPFC_MBOXQ_t *mboxq;
6258 	uint32_t if_type, rc = 0;
6259 	uint32_t endian_mb_data[2] = {HOST_ENDIAN_LOW_WORD0,
6260 				      HOST_ENDIAN_HIGH_WORD1};
6261 
6262 	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
6263 	switch (if_type) {
6264 	case LPFC_SLI_INTF_IF_TYPE_0:
6265 		mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
6266 						       GFP_KERNEL);
6267 		if (!mboxq) {
6268 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6269 					"0492 Unable to allocate memory for "
6270 					"issuing SLI_CONFIG_SPECIAL mailbox "
6271 					"command\n");
6272 			return -ENOMEM;
6273 		}
6274 
6275 		/*
6276 		 * The SLI4_CONFIG_SPECIAL mailbox command requires the first
6277 		 * two words to contain special data values and no other data.
6278 		 */
6279 		memset(mboxq, 0, sizeof(LPFC_MBOXQ_t));
6280 		memcpy(&mboxq->u.mqe, &endian_mb_data, sizeof(endian_mb_data));
6281 		rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
6282 		if (rc != MBX_SUCCESS) {
6283 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6284 					"0493 SLI_CONFIG_SPECIAL mailbox "
6285 					"failed with status x%x\n",
6286 					rc);
6287 			rc = -EIO;
6288 		}
6289 		mempool_free(mboxq, phba->mbox_mem_pool);
6290 		break;
6291 	case LPFC_SLI_INTF_IF_TYPE_2:
6292 	case LPFC_SLI_INTF_IF_TYPE_1:
6293 	default:
6294 		break;
6295 	}
6296 	return rc;
6297 }
6298 
6299 /**
6300  * lpfc_sli4_queue_verify - Verify and update EQ and CQ counts
6301  * @phba: pointer to lpfc hba data structure.
6302  *
6303  * This routine is invoked to check the user settable queue counts for EQs and
6304  * CQs. after this routine is called the counts will be set to valid values that
6305  * adhere to the constraints of the system's interrupt vectors and the port's
6306  * queue resources.
6307  *
6308  * Return codes
6309  *      0 - successful
6310  *      -ENOMEM - No available memory
6311  **/
6312 static int
lpfc_sli4_queue_verify(struct lpfc_hba * phba)6313 lpfc_sli4_queue_verify(struct lpfc_hba *phba)
6314 {
6315 	int cfg_fcp_wq_count;
6316 	int cfg_fcp_eq_count;
6317 
6318 	/*
6319 	 * Sanity check for confiugred queue parameters against the run-time
6320 	 * device parameters
6321 	 */
6322 
6323 	/* Sanity check on FCP fast-path WQ parameters */
6324 	cfg_fcp_wq_count = phba->cfg_fcp_wq_count;
6325 	if (cfg_fcp_wq_count >
6326 	    (phba->sli4_hba.max_cfg_param.max_wq - LPFC_SP_WQN_DEF)) {
6327 		cfg_fcp_wq_count = phba->sli4_hba.max_cfg_param.max_wq -
6328 				   LPFC_SP_WQN_DEF;
6329 		if (cfg_fcp_wq_count < LPFC_FP_WQN_MIN) {
6330 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6331 					"2581 Not enough WQs (%d) from "
6332 					"the pci function for supporting "
6333 					"FCP WQs (%d)\n",
6334 					phba->sli4_hba.max_cfg_param.max_wq,
6335 					phba->cfg_fcp_wq_count);
6336 			goto out_error;
6337 		}
6338 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6339 				"2582 Not enough WQs (%d) from the pci "
6340 				"function for supporting the requested "
6341 				"FCP WQs (%d), the actual FCP WQs can "
6342 				"be supported: %d\n",
6343 				phba->sli4_hba.max_cfg_param.max_wq,
6344 				phba->cfg_fcp_wq_count, cfg_fcp_wq_count);
6345 	}
6346 	/* The actual number of FCP work queues adopted */
6347 	phba->cfg_fcp_wq_count = cfg_fcp_wq_count;
6348 
6349 	/* Sanity check on FCP fast-path EQ parameters */
6350 	cfg_fcp_eq_count = phba->cfg_fcp_eq_count;
6351 	if (cfg_fcp_eq_count >
6352 	    (phba->sli4_hba.max_cfg_param.max_eq - LPFC_SP_EQN_DEF)) {
6353 		cfg_fcp_eq_count = phba->sli4_hba.max_cfg_param.max_eq -
6354 				   LPFC_SP_EQN_DEF;
6355 		if (cfg_fcp_eq_count < LPFC_FP_EQN_MIN) {
6356 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6357 					"2574 Not enough EQs (%d) from the "
6358 					"pci function for supporting FCP "
6359 					"EQs (%d)\n",
6360 					phba->sli4_hba.max_cfg_param.max_eq,
6361 					phba->cfg_fcp_eq_count);
6362 			goto out_error;
6363 		}
6364 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6365 				"2575 Not enough EQs (%d) from the pci "
6366 				"function for supporting the requested "
6367 				"FCP EQs (%d), the actual FCP EQs can "
6368 				"be supported: %d\n",
6369 				phba->sli4_hba.max_cfg_param.max_eq,
6370 				phba->cfg_fcp_eq_count, cfg_fcp_eq_count);
6371 	}
6372 	/* It does not make sense to have more EQs than WQs */
6373 	if (cfg_fcp_eq_count > phba->cfg_fcp_wq_count) {
6374 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6375 				"2593 The FCP EQ count(%d) cannot be greater "
6376 				"than the FCP WQ count(%d), limiting the "
6377 				"FCP EQ count to %d\n", cfg_fcp_eq_count,
6378 				phba->cfg_fcp_wq_count,
6379 				phba->cfg_fcp_wq_count);
6380 		cfg_fcp_eq_count = phba->cfg_fcp_wq_count;
6381 	}
6382 	/* The actual number of FCP event queues adopted */
6383 	phba->cfg_fcp_eq_count = cfg_fcp_eq_count;
6384 	/* The overall number of event queues used */
6385 	phba->sli4_hba.cfg_eqn = phba->cfg_fcp_eq_count + LPFC_SP_EQN_DEF;
6386 
6387 	/* Get EQ depth from module parameter, fake the default for now */
6388 	phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;
6389 	phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
6390 
6391 	/* Get CQ depth from module parameter, fake the default for now */
6392 	phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
6393 	phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
6394 
6395 	return 0;
6396 out_error:
6397 	return -ENOMEM;
6398 }
6399 
6400 /**
6401  * lpfc_sli4_queue_create - Create all the SLI4 queues
6402  * @phba: pointer to lpfc hba data structure.
6403  *
6404  * This routine is invoked to allocate all the SLI4 queues for the FCoE HBA
6405  * operation. For each SLI4 queue type, the parameters such as queue entry
6406  * count (queue depth) shall be taken from the module parameter. For now,
6407  * we just use some constant number as place holder.
6408  *
6409  * Return codes
6410  *      0 - sucessful
6411  *      -ENOMEM - No availble memory
6412  *      -EIO - The mailbox failed to complete successfully.
6413  **/
6414 int
lpfc_sli4_queue_create(struct lpfc_hba * phba)6415 lpfc_sli4_queue_create(struct lpfc_hba *phba)
6416 {
6417 	struct lpfc_queue *qdesc;
6418 	int fcp_eqidx, fcp_cqidx, fcp_wqidx;
6419 
6420 	/*
6421 	 * Create Event Queues (EQs)
6422 	 */
6423 
6424 	/* Create slow path event queue */
6425 	qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.eq_esize,
6426 				      phba->sli4_hba.eq_ecount);
6427 	if (!qdesc) {
6428 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6429 				"0496 Failed allocate slow-path EQ\n");
6430 		goto out_error;
6431 	}
6432 	phba->sli4_hba.sp_eq = qdesc;
6433 
6434 	/*
6435 	 * Create fast-path FCP Event Queue(s).  The cfg_fcp_eq_count can be
6436 	 * zero whenever there is exactly one interrupt vector.  This is not
6437 	 * an error.
6438 	 */
6439 	if (phba->cfg_fcp_eq_count) {
6440 		phba->sli4_hba.fp_eq = kzalloc((sizeof(struct lpfc_queue *) *
6441 				       phba->cfg_fcp_eq_count), GFP_KERNEL);
6442 		if (!phba->sli4_hba.fp_eq) {
6443 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6444 					"2576 Failed allocate memory for "
6445 					"fast-path EQ record array\n");
6446 			goto out_free_sp_eq;
6447 		}
6448 	}
6449 	for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++) {
6450 		qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.eq_esize,
6451 					      phba->sli4_hba.eq_ecount);
6452 		if (!qdesc) {
6453 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6454 					"0497 Failed allocate fast-path EQ\n");
6455 			goto out_free_fp_eq;
6456 		}
6457 		phba->sli4_hba.fp_eq[fcp_eqidx] = qdesc;
6458 	}
6459 
6460 	/*
6461 	 * Create Complete Queues (CQs)
6462 	 */
6463 
6464 	/* Create slow-path Mailbox Command Complete Queue */
6465 	qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize,
6466 				      phba->sli4_hba.cq_ecount);
6467 	if (!qdesc) {
6468 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6469 				"0500 Failed allocate slow-path mailbox CQ\n");
6470 		goto out_free_fp_eq;
6471 	}
6472 	phba->sli4_hba.mbx_cq = qdesc;
6473 
6474 	/* Create slow-path ELS Complete Queue */
6475 	qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize,
6476 				      phba->sli4_hba.cq_ecount);
6477 	if (!qdesc) {
6478 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6479 				"0501 Failed allocate slow-path ELS CQ\n");
6480 		goto out_free_mbx_cq;
6481 	}
6482 	phba->sli4_hba.els_cq = qdesc;
6483 
6484 
6485 	/*
6486 	 * Create fast-path FCP Completion Queue(s), one-to-one with FCP EQs.
6487 	 * If there are no FCP EQs then create exactly one FCP CQ.
6488 	 */
6489 	if (phba->cfg_fcp_eq_count)
6490 		phba->sli4_hba.fcp_cq = kzalloc((sizeof(struct lpfc_queue *) *
6491 						 phba->cfg_fcp_eq_count),
6492 						GFP_KERNEL);
6493 	else
6494 		phba->sli4_hba.fcp_cq = kzalloc(sizeof(struct lpfc_queue *),
6495 						GFP_KERNEL);
6496 	if (!phba->sli4_hba.fcp_cq) {
6497 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6498 				"2577 Failed allocate memory for fast-path "
6499 				"CQ record array\n");
6500 		goto out_free_els_cq;
6501 	}
6502 	fcp_cqidx = 0;
6503 	do {
6504 		qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize,
6505 					      phba->sli4_hba.cq_ecount);
6506 		if (!qdesc) {
6507 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6508 					"0499 Failed allocate fast-path FCP "
6509 					"CQ (%d)\n", fcp_cqidx);
6510 			goto out_free_fcp_cq;
6511 		}
6512 		phba->sli4_hba.fcp_cq[fcp_cqidx] = qdesc;
6513 	} while (++fcp_cqidx < phba->cfg_fcp_eq_count);
6514 
6515 	/* Create Mailbox Command Queue */
6516 	phba->sli4_hba.mq_esize = LPFC_MQE_SIZE;
6517 	phba->sli4_hba.mq_ecount = LPFC_MQE_DEF_COUNT;
6518 
6519 	qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.mq_esize,
6520 				      phba->sli4_hba.mq_ecount);
6521 	if (!qdesc) {
6522 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6523 				"0505 Failed allocate slow-path MQ\n");
6524 		goto out_free_fcp_cq;
6525 	}
6526 	phba->sli4_hba.mbx_wq = qdesc;
6527 
6528 	/*
6529 	 * Create all the Work Queues (WQs)
6530 	 */
6531 	phba->sli4_hba.wq_esize = LPFC_WQE_SIZE;
6532 	phba->sli4_hba.wq_ecount = LPFC_WQE_DEF_COUNT;
6533 
6534 	/* Create slow-path ELS Work Queue */
6535 	qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.wq_esize,
6536 				      phba->sli4_hba.wq_ecount);
6537 	if (!qdesc) {
6538 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6539 				"0504 Failed allocate slow-path ELS WQ\n");
6540 		goto out_free_mbx_wq;
6541 	}
6542 	phba->sli4_hba.els_wq = qdesc;
6543 
6544 	/* Create fast-path FCP Work Queue(s) */
6545 	phba->sli4_hba.fcp_wq = kzalloc((sizeof(struct lpfc_queue *) *
6546 				phba->cfg_fcp_wq_count), GFP_KERNEL);
6547 	if (!phba->sli4_hba.fcp_wq) {
6548 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6549 				"2578 Failed allocate memory for fast-path "
6550 				"WQ record array\n");
6551 		goto out_free_els_wq;
6552 	}
6553 	for (fcp_wqidx = 0; fcp_wqidx < phba->cfg_fcp_wq_count; fcp_wqidx++) {
6554 		qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.wq_esize,
6555 					      phba->sli4_hba.wq_ecount);
6556 		if (!qdesc) {
6557 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6558 					"0503 Failed allocate fast-path FCP "
6559 					"WQ (%d)\n", fcp_wqidx);
6560 			goto out_free_fcp_wq;
6561 		}
6562 		phba->sli4_hba.fcp_wq[fcp_wqidx] = qdesc;
6563 	}
6564 
6565 	/*
6566 	 * Create Receive Queue (RQ)
6567 	 */
6568 	phba->sli4_hba.rq_esize = LPFC_RQE_SIZE;
6569 	phba->sli4_hba.rq_ecount = LPFC_RQE_DEF_COUNT;
6570 
6571 	/* Create Receive Queue for header */
6572 	qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.rq_esize,
6573 				      phba->sli4_hba.rq_ecount);
6574 	if (!qdesc) {
6575 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6576 				"0506 Failed allocate receive HRQ\n");
6577 		goto out_free_fcp_wq;
6578 	}
6579 	phba->sli4_hba.hdr_rq = qdesc;
6580 
6581 	/* Create Receive Queue for data */
6582 	qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.rq_esize,
6583 				      phba->sli4_hba.rq_ecount);
6584 	if (!qdesc) {
6585 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6586 				"0507 Failed allocate receive DRQ\n");
6587 		goto out_free_hdr_rq;
6588 	}
6589 	phba->sli4_hba.dat_rq = qdesc;
6590 
6591 	return 0;
6592 
6593 out_free_hdr_rq:
6594 	lpfc_sli4_queue_free(phba->sli4_hba.hdr_rq);
6595 	phba->sli4_hba.hdr_rq = NULL;
6596 out_free_fcp_wq:
6597 	for (--fcp_wqidx; fcp_wqidx >= 0; fcp_wqidx--) {
6598 		lpfc_sli4_queue_free(phba->sli4_hba.fcp_wq[fcp_wqidx]);
6599 		phba->sli4_hba.fcp_wq[fcp_wqidx] = NULL;
6600 	}
6601 	kfree(phba->sli4_hba.fcp_wq);
6602 	phba->sli4_hba.fcp_wq = NULL;
6603 out_free_els_wq:
6604 	lpfc_sli4_queue_free(phba->sli4_hba.els_wq);
6605 	phba->sli4_hba.els_wq = NULL;
6606 out_free_mbx_wq:
6607 	lpfc_sli4_queue_free(phba->sli4_hba.mbx_wq);
6608 	phba->sli4_hba.mbx_wq = NULL;
6609 out_free_fcp_cq:
6610 	for (--fcp_cqidx; fcp_cqidx >= 0; fcp_cqidx--) {
6611 		lpfc_sli4_queue_free(phba->sli4_hba.fcp_cq[fcp_cqidx]);
6612 		phba->sli4_hba.fcp_cq[fcp_cqidx] = NULL;
6613 	}
6614 	kfree(phba->sli4_hba.fcp_cq);
6615 	phba->sli4_hba.fcp_cq = NULL;
6616 out_free_els_cq:
6617 	lpfc_sli4_queue_free(phba->sli4_hba.els_cq);
6618 	phba->sli4_hba.els_cq = NULL;
6619 out_free_mbx_cq:
6620 	lpfc_sli4_queue_free(phba->sli4_hba.mbx_cq);
6621 	phba->sli4_hba.mbx_cq = NULL;
6622 out_free_fp_eq:
6623 	for (--fcp_eqidx; fcp_eqidx >= 0; fcp_eqidx--) {
6624 		lpfc_sli4_queue_free(phba->sli4_hba.fp_eq[fcp_eqidx]);
6625 		phba->sli4_hba.fp_eq[fcp_eqidx] = NULL;
6626 	}
6627 	kfree(phba->sli4_hba.fp_eq);
6628 	phba->sli4_hba.fp_eq = NULL;
6629 out_free_sp_eq:
6630 	lpfc_sli4_queue_free(phba->sli4_hba.sp_eq);
6631 	phba->sli4_hba.sp_eq = NULL;
6632 out_error:
6633 	return -ENOMEM;
6634 }
6635 
6636 /**
6637  * lpfc_sli4_queue_destroy - Destroy all the SLI4 queues
6638  * @phba: pointer to lpfc hba data structure.
6639  *
6640  * This routine is invoked to release all the SLI4 queues with the FCoE HBA
6641  * operation.
6642  *
6643  * Return codes
6644  *      0 - successful
6645  *      -ENOMEM - No available memory
6646  *      -EIO - The mailbox failed to complete successfully.
6647  **/
6648 void
lpfc_sli4_queue_destroy(struct lpfc_hba * phba)6649 lpfc_sli4_queue_destroy(struct lpfc_hba *phba)
6650 {
6651 	int fcp_qidx;
6652 
6653 	/* Release mailbox command work queue */
6654 	lpfc_sli4_queue_free(phba->sli4_hba.mbx_wq);
6655 	phba->sli4_hba.mbx_wq = NULL;
6656 
6657 	/* Release ELS work queue */
6658 	lpfc_sli4_queue_free(phba->sli4_hba.els_wq);
6659 	phba->sli4_hba.els_wq = NULL;
6660 
6661 	/* Release FCP work queue */
6662 	if (phba->sli4_hba.fcp_wq != NULL)
6663 		for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_wq_count;
6664 		     fcp_qidx++)
6665 			lpfc_sli4_queue_free(phba->sli4_hba.fcp_wq[fcp_qidx]);
6666 	kfree(phba->sli4_hba.fcp_wq);
6667 	phba->sli4_hba.fcp_wq = NULL;
6668 
6669 	/* Release unsolicited receive queue */
6670 	lpfc_sli4_queue_free(phba->sli4_hba.hdr_rq);
6671 	phba->sli4_hba.hdr_rq = NULL;
6672 	lpfc_sli4_queue_free(phba->sli4_hba.dat_rq);
6673 	phba->sli4_hba.dat_rq = NULL;
6674 
6675 	/* Release ELS complete queue */
6676 	lpfc_sli4_queue_free(phba->sli4_hba.els_cq);
6677 	phba->sli4_hba.els_cq = NULL;
6678 
6679 	/* Release mailbox command complete queue */
6680 	lpfc_sli4_queue_free(phba->sli4_hba.mbx_cq);
6681 	phba->sli4_hba.mbx_cq = NULL;
6682 
6683 	/* Release FCP response complete queue */
6684 	fcp_qidx = 0;
6685 	if (phba->sli4_hba.fcp_cq != NULL)
6686 		do
6687 			lpfc_sli4_queue_free(phba->sli4_hba.fcp_cq[fcp_qidx]);
6688 		while (++fcp_qidx < phba->cfg_fcp_eq_count);
6689 	kfree(phba->sli4_hba.fcp_cq);
6690 	phba->sli4_hba.fcp_cq = NULL;
6691 
6692 	/* Release fast-path event queue */
6693 	if (phba->sli4_hba.fp_eq != NULL)
6694 		for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count;
6695 		     fcp_qidx++)
6696 			lpfc_sli4_queue_free(phba->sli4_hba.fp_eq[fcp_qidx]);
6697 	kfree(phba->sli4_hba.fp_eq);
6698 	phba->sli4_hba.fp_eq = NULL;
6699 
6700 	/* Release slow-path event queue */
6701 	lpfc_sli4_queue_free(phba->sli4_hba.sp_eq);
6702 	phba->sli4_hba.sp_eq = NULL;
6703 
6704 	return;
6705 }
6706 
6707 /**
6708  * lpfc_sli4_queue_setup - Set up all the SLI4 queues
6709  * @phba: pointer to lpfc hba data structure.
6710  *
6711  * This routine is invoked to set up all the SLI4 queues for the FCoE HBA
6712  * operation.
6713  *
6714  * Return codes
6715  *      0 - successful
6716  *      -ENOMEM - No available memory
6717  *      -EIO - The mailbox failed to complete successfully.
6718  **/
6719 int
lpfc_sli4_queue_setup(struct lpfc_hba * phba)6720 lpfc_sli4_queue_setup(struct lpfc_hba *phba)
6721 {
6722 	int rc = -ENOMEM;
6723 	int fcp_eqidx, fcp_cqidx, fcp_wqidx;
6724 	int fcp_cq_index = 0;
6725 
6726 	/*
6727 	 * Set up Event Queues (EQs)
6728 	 */
6729 
6730 	/* Set up slow-path event queue */
6731 	if (!phba->sli4_hba.sp_eq) {
6732 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6733 				"0520 Slow-path EQ not allocated\n");
6734 		goto out_error;
6735 	}
6736 	rc = lpfc_eq_create(phba, phba->sli4_hba.sp_eq,
6737 			    LPFC_SP_DEF_IMAX);
6738 	if (rc) {
6739 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6740 				"0521 Failed setup of slow-path EQ: "
6741 				"rc = 0x%x\n", rc);
6742 		goto out_error;
6743 	}
6744 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6745 			"2583 Slow-path EQ setup: queue-id=%d\n",
6746 			phba->sli4_hba.sp_eq->queue_id);
6747 
6748 	/* Set up fast-path event queue */
6749 	if (phba->cfg_fcp_eq_count && !phba->sli4_hba.fp_eq) {
6750 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6751 				"3147 Fast-path EQs not allocated\n");
6752 		rc = -ENOMEM;
6753 		goto out_destroy_sp_eq;
6754 	}
6755 	for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++) {
6756 		if (!phba->sli4_hba.fp_eq[fcp_eqidx]) {
6757 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6758 					"0522 Fast-path EQ (%d) not "
6759 					"allocated\n", fcp_eqidx);
6760 			rc = -ENOMEM;
6761 			goto out_destroy_fp_eq;
6762 		}
6763 		rc = lpfc_eq_create(phba, phba->sli4_hba.fp_eq[fcp_eqidx],
6764 				    phba->cfg_fcp_imax);
6765 		if (rc) {
6766 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6767 					"0523 Failed setup of fast-path EQ "
6768 					"(%d), rc = 0x%x\n", fcp_eqidx, rc);
6769 			goto out_destroy_fp_eq;
6770 		}
6771 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6772 				"2584 Fast-path EQ setup: "
6773 				"queue[%d]-id=%d\n", fcp_eqidx,
6774 				phba->sli4_hba.fp_eq[fcp_eqidx]->queue_id);
6775 	}
6776 
6777 	/*
6778 	 * Set up Complete Queues (CQs)
6779 	 */
6780 
6781 	/* Set up slow-path MBOX Complete Queue as the first CQ */
6782 	if (!phba->sli4_hba.mbx_cq) {
6783 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6784 				"0528 Mailbox CQ not allocated\n");
6785 		rc = -ENOMEM;
6786 		goto out_destroy_fp_eq;
6787 	}
6788 	rc = lpfc_cq_create(phba, phba->sli4_hba.mbx_cq, phba->sli4_hba.sp_eq,
6789 			    LPFC_MCQ, LPFC_MBOX);
6790 	if (rc) {
6791 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6792 				"0529 Failed setup of slow-path mailbox CQ: "
6793 				"rc = 0x%x\n", rc);
6794 		goto out_destroy_fp_eq;
6795 	}
6796 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6797 			"2585 MBX CQ setup: cq-id=%d, parent eq-id=%d\n",
6798 			phba->sli4_hba.mbx_cq->queue_id,
6799 			phba->sli4_hba.sp_eq->queue_id);
6800 
6801 	/* Set up slow-path ELS Complete Queue */
6802 	if (!phba->sli4_hba.els_cq) {
6803 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6804 				"0530 ELS CQ not allocated\n");
6805 		rc = -ENOMEM;
6806 		goto out_destroy_mbx_cq;
6807 	}
6808 	rc = lpfc_cq_create(phba, phba->sli4_hba.els_cq, phba->sli4_hba.sp_eq,
6809 			    LPFC_WCQ, LPFC_ELS);
6810 	if (rc) {
6811 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6812 				"0531 Failed setup of slow-path ELS CQ: "
6813 				"rc = 0x%x\n", rc);
6814 		goto out_destroy_mbx_cq;
6815 	}
6816 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6817 			"2586 ELS CQ setup: cq-id=%d, parent eq-id=%d\n",
6818 			phba->sli4_hba.els_cq->queue_id,
6819 			phba->sli4_hba.sp_eq->queue_id);
6820 
6821 	/* Set up fast-path FCP Response Complete Queue */
6822 	if (!phba->sli4_hba.fcp_cq) {
6823 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6824 				"3148 Fast-path FCP CQ array not "
6825 				"allocated\n");
6826 		rc = -ENOMEM;
6827 		goto out_destroy_els_cq;
6828 	}
6829 	fcp_cqidx = 0;
6830 	do {
6831 		if (!phba->sli4_hba.fcp_cq[fcp_cqidx]) {
6832 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6833 					"0526 Fast-path FCP CQ (%d) not "
6834 					"allocated\n", fcp_cqidx);
6835 			rc = -ENOMEM;
6836 			goto out_destroy_fcp_cq;
6837 		}
6838 		if (phba->cfg_fcp_eq_count)
6839 			rc = lpfc_cq_create(phba,
6840 					    phba->sli4_hba.fcp_cq[fcp_cqidx],
6841 					    phba->sli4_hba.fp_eq[fcp_cqidx],
6842 					    LPFC_WCQ, LPFC_FCP);
6843 		else
6844 			rc = lpfc_cq_create(phba,
6845 					    phba->sli4_hba.fcp_cq[fcp_cqidx],
6846 					    phba->sli4_hba.sp_eq,
6847 					    LPFC_WCQ, LPFC_FCP);
6848 		if (rc) {
6849 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6850 					"0527 Failed setup of fast-path FCP "
6851 					"CQ (%d), rc = 0x%x\n", fcp_cqidx, rc);
6852 			goto out_destroy_fcp_cq;
6853 		}
6854 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6855 				"2588 FCP CQ setup: cq[%d]-id=%d, "
6856 				"parent %seq[%d]-id=%d\n",
6857 				fcp_cqidx,
6858 				phba->sli4_hba.fcp_cq[fcp_cqidx]->queue_id,
6859 				(phba->cfg_fcp_eq_count) ? "" : "sp_",
6860 				fcp_cqidx,
6861 				(phba->cfg_fcp_eq_count) ?
6862 				   phba->sli4_hba.fp_eq[fcp_cqidx]->queue_id :
6863 				   phba->sli4_hba.sp_eq->queue_id);
6864 	} while (++fcp_cqidx < phba->cfg_fcp_eq_count);
6865 
6866 	/*
6867 	 * Set up all the Work Queues (WQs)
6868 	 */
6869 
6870 	/* Set up Mailbox Command Queue */
6871 	if (!phba->sli4_hba.mbx_wq) {
6872 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6873 				"0538 Slow-path MQ not allocated\n");
6874 		rc = -ENOMEM;
6875 		goto out_destroy_fcp_cq;
6876 	}
6877 	rc = lpfc_mq_create(phba, phba->sli4_hba.mbx_wq,
6878 			    phba->sli4_hba.mbx_cq, LPFC_MBOX);
6879 	if (rc) {
6880 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6881 				"0539 Failed setup of slow-path MQ: "
6882 				"rc = 0x%x\n", rc);
6883 		goto out_destroy_fcp_cq;
6884 	}
6885 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6886 			"2589 MBX MQ setup: wq-id=%d, parent cq-id=%d\n",
6887 			phba->sli4_hba.mbx_wq->queue_id,
6888 			phba->sli4_hba.mbx_cq->queue_id);
6889 
6890 	/* Set up slow-path ELS Work Queue */
6891 	if (!phba->sli4_hba.els_wq) {
6892 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6893 				"0536 Slow-path ELS WQ not allocated\n");
6894 		rc = -ENOMEM;
6895 		goto out_destroy_mbx_wq;
6896 	}
6897 	rc = lpfc_wq_create(phba, phba->sli4_hba.els_wq,
6898 			    phba->sli4_hba.els_cq, LPFC_ELS);
6899 	if (rc) {
6900 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6901 				"0537 Failed setup of slow-path ELS WQ: "
6902 				"rc = 0x%x\n", rc);
6903 		goto out_destroy_mbx_wq;
6904 	}
6905 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6906 			"2590 ELS WQ setup: wq-id=%d, parent cq-id=%d\n",
6907 			phba->sli4_hba.els_wq->queue_id,
6908 			phba->sli4_hba.els_cq->queue_id);
6909 
6910 	/* Set up fast-path FCP Work Queue */
6911 	if (!phba->sli4_hba.fcp_wq) {
6912 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6913 				"3149 Fast-path FCP WQ array not "
6914 				"allocated\n");
6915 		rc = -ENOMEM;
6916 		goto out_destroy_els_wq;
6917 	}
6918 	for (fcp_wqidx = 0; fcp_wqidx < phba->cfg_fcp_wq_count; fcp_wqidx++) {
6919 		if (!phba->sli4_hba.fcp_wq[fcp_wqidx]) {
6920 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6921 					"0534 Fast-path FCP WQ (%d) not "
6922 					"allocated\n", fcp_wqidx);
6923 			rc = -ENOMEM;
6924 			goto out_destroy_fcp_wq;
6925 		}
6926 		rc = lpfc_wq_create(phba, phba->sli4_hba.fcp_wq[fcp_wqidx],
6927 				    phba->sli4_hba.fcp_cq[fcp_cq_index],
6928 				    LPFC_FCP);
6929 		if (rc) {
6930 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6931 					"0535 Failed setup of fast-path FCP "
6932 					"WQ (%d), rc = 0x%x\n", fcp_wqidx, rc);
6933 			goto out_destroy_fcp_wq;
6934 		}
6935 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6936 				"2591 FCP WQ setup: wq[%d]-id=%d, "
6937 				"parent cq[%d]-id=%d\n",
6938 				fcp_wqidx,
6939 				phba->sli4_hba.fcp_wq[fcp_wqidx]->queue_id,
6940 				fcp_cq_index,
6941 				phba->sli4_hba.fcp_cq[fcp_cq_index]->queue_id);
6942 		/* Round robin FCP Work Queue's Completion Queue assignment */
6943 		if (phba->cfg_fcp_eq_count)
6944 			fcp_cq_index = ((fcp_cq_index + 1) %
6945 					phba->cfg_fcp_eq_count);
6946 	}
6947 
6948 	/*
6949 	 * Create Receive Queue (RQ)
6950 	 */
6951 	if (!phba->sli4_hba.hdr_rq || !phba->sli4_hba.dat_rq) {
6952 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6953 				"0540 Receive Queue not allocated\n");
6954 		rc = -ENOMEM;
6955 		goto out_destroy_fcp_wq;
6956 	}
6957 
6958 	lpfc_rq_adjust_repost(phba, phba->sli4_hba.hdr_rq, LPFC_ELS_HBQ);
6959 	lpfc_rq_adjust_repost(phba, phba->sli4_hba.dat_rq, LPFC_ELS_HBQ);
6960 
6961 	rc = lpfc_rq_create(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq,
6962 			    phba->sli4_hba.els_cq, LPFC_USOL);
6963 	if (rc) {
6964 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6965 				"0541 Failed setup of Receive Queue: "
6966 				"rc = 0x%x\n", rc);
6967 		goto out_destroy_fcp_wq;
6968 	}
6969 
6970 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6971 			"2592 USL RQ setup: hdr-rq-id=%d, dat-rq-id=%d "
6972 			"parent cq-id=%d\n",
6973 			phba->sli4_hba.hdr_rq->queue_id,
6974 			phba->sli4_hba.dat_rq->queue_id,
6975 			phba->sli4_hba.els_cq->queue_id);
6976 	return 0;
6977 
6978 out_destroy_fcp_wq:
6979 	for (--fcp_wqidx; fcp_wqidx >= 0; fcp_wqidx--)
6980 		lpfc_wq_destroy(phba, phba->sli4_hba.fcp_wq[fcp_wqidx]);
6981 out_destroy_els_wq:
6982 	lpfc_wq_destroy(phba, phba->sli4_hba.els_wq);
6983 out_destroy_mbx_wq:
6984 	lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq);
6985 out_destroy_fcp_cq:
6986 	for (--fcp_cqidx; fcp_cqidx >= 0; fcp_cqidx--)
6987 		lpfc_cq_destroy(phba, phba->sli4_hba.fcp_cq[fcp_cqidx]);
6988 out_destroy_els_cq:
6989 	lpfc_cq_destroy(phba, phba->sli4_hba.els_cq);
6990 out_destroy_mbx_cq:
6991 	lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq);
6992 out_destroy_fp_eq:
6993 	for (--fcp_eqidx; fcp_eqidx >= 0; fcp_eqidx--)
6994 		lpfc_eq_destroy(phba, phba->sli4_hba.fp_eq[fcp_eqidx]);
6995 out_destroy_sp_eq:
6996 	lpfc_eq_destroy(phba, phba->sli4_hba.sp_eq);
6997 out_error:
6998 	return rc;
6999 }
7000 
7001 /**
7002  * lpfc_sli4_queue_unset - Unset all the SLI4 queues
7003  * @phba: pointer to lpfc hba data structure.
7004  *
7005  * This routine is invoked to unset all the SLI4 queues with the FCoE HBA
7006  * operation.
7007  *
7008  * Return codes
7009  *      0 - successful
7010  *      -ENOMEM - No available memory
7011  *      -EIO - The mailbox failed to complete successfully.
7012  **/
7013 void
lpfc_sli4_queue_unset(struct lpfc_hba * phba)7014 lpfc_sli4_queue_unset(struct lpfc_hba *phba)
7015 {
7016 	int fcp_qidx;
7017 
7018 	/* Unset mailbox command work queue */
7019 	lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq);
7020 	/* Unset ELS work queue */
7021 	lpfc_wq_destroy(phba, phba->sli4_hba.els_wq);
7022 	/* Unset unsolicited receive queue */
7023 	lpfc_rq_destroy(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq);
7024 	/* Unset FCP work queue */
7025 	for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_wq_count; fcp_qidx++)
7026 		lpfc_wq_destroy(phba, phba->sli4_hba.fcp_wq[fcp_qidx]);
7027 	/* Unset mailbox command complete queue */
7028 	lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq);
7029 	/* Unset ELS complete queue */
7030 	lpfc_cq_destroy(phba, phba->sli4_hba.els_cq);
7031 	/* Unset FCP response complete queue */
7032 	if (phba->sli4_hba.fcp_cq) {
7033 		fcp_qidx = 0;
7034 		do {
7035 			lpfc_cq_destroy(phba, phba->sli4_hba.fcp_cq[fcp_qidx]);
7036 		} while (++fcp_qidx < phba->cfg_fcp_eq_count);
7037 	}
7038 	/* Unset fast-path event queue */
7039 	if (phba->sli4_hba.fp_eq) {
7040 		for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count;
7041 		     fcp_qidx++)
7042 			lpfc_eq_destroy(phba, phba->sli4_hba.fp_eq[fcp_qidx]);
7043 	}
7044 	/* Unset slow-path event queue */
7045 	lpfc_eq_destroy(phba, phba->sli4_hba.sp_eq);
7046 }
7047 
7048 /**
7049  * lpfc_sli4_cq_event_pool_create - Create completion-queue event free pool
7050  * @phba: pointer to lpfc hba data structure.
7051  *
7052  * This routine is invoked to allocate and set up a pool of completion queue
7053  * events. The body of the completion queue event is a completion queue entry
7054  * CQE. For now, this pool is used for the interrupt service routine to queue
7055  * the following HBA completion queue events for the worker thread to process:
7056  *   - Mailbox asynchronous events
7057  *   - Receive queue completion unsolicited events
7058  * Later, this can be used for all the slow-path events.
7059  *
7060  * Return codes
7061  *      0 - successful
7062  *      -ENOMEM - No available memory
7063  **/
7064 static int
lpfc_sli4_cq_event_pool_create(struct lpfc_hba * phba)7065 lpfc_sli4_cq_event_pool_create(struct lpfc_hba *phba)
7066 {
7067 	struct lpfc_cq_event *cq_event;
7068 	int i;
7069 
7070 	for (i = 0; i < (4 * phba->sli4_hba.cq_ecount); i++) {
7071 		cq_event = kmalloc(sizeof(struct lpfc_cq_event), GFP_KERNEL);
7072 		if (!cq_event)
7073 			goto out_pool_create_fail;
7074 		list_add_tail(&cq_event->list,
7075 			      &phba->sli4_hba.sp_cqe_event_pool);
7076 	}
7077 	return 0;
7078 
7079 out_pool_create_fail:
7080 	lpfc_sli4_cq_event_pool_destroy(phba);
7081 	return -ENOMEM;
7082 }
7083 
7084 /**
7085  * lpfc_sli4_cq_event_pool_destroy - Free completion-queue event free pool
7086  * @phba: pointer to lpfc hba data structure.
7087  *
7088  * This routine is invoked to free the pool of completion queue events at
7089  * driver unload time. Note that, it is the responsibility of the driver
7090  * cleanup routine to free all the outstanding completion-queue events
7091  * allocated from this pool back into the pool before invoking this routine
7092  * to destroy the pool.
7093  **/
7094 static void
lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba * phba)7095 lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *phba)
7096 {
7097 	struct lpfc_cq_event *cq_event, *next_cq_event;
7098 
7099 	list_for_each_entry_safe(cq_event, next_cq_event,
7100 				 &phba->sli4_hba.sp_cqe_event_pool, list) {
7101 		list_del(&cq_event->list);
7102 		kfree(cq_event);
7103 	}
7104 }
7105 
7106 /**
7107  * __lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
7108  * @phba: pointer to lpfc hba data structure.
7109  *
7110  * This routine is the lock free version of the API invoked to allocate a
7111  * completion-queue event from the free pool.
7112  *
7113  * Return: Pointer to the newly allocated completion-queue event if successful
7114  *         NULL otherwise.
7115  **/
7116 struct lpfc_cq_event *
__lpfc_sli4_cq_event_alloc(struct lpfc_hba * phba)7117 __lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
7118 {
7119 	struct lpfc_cq_event *cq_event = NULL;
7120 
7121 	list_remove_head(&phba->sli4_hba.sp_cqe_event_pool, cq_event,
7122 			 struct lpfc_cq_event, list);
7123 	return cq_event;
7124 }
7125 
7126 /**
7127  * lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
7128  * @phba: pointer to lpfc hba data structure.
7129  *
7130  * This routine is the lock version of the API invoked to allocate a
7131  * completion-queue event from the free pool.
7132  *
7133  * Return: Pointer to the newly allocated completion-queue event if successful
7134  *         NULL otherwise.
7135  **/
7136 struct lpfc_cq_event *
lpfc_sli4_cq_event_alloc(struct lpfc_hba * phba)7137 lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
7138 {
7139 	struct lpfc_cq_event *cq_event;
7140 	unsigned long iflags;
7141 
7142 	spin_lock_irqsave(&phba->hbalock, iflags);
7143 	cq_event = __lpfc_sli4_cq_event_alloc(phba);
7144 	spin_unlock_irqrestore(&phba->hbalock, iflags);
7145 	return cq_event;
7146 }
7147 
7148 /**
7149  * __lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
7150  * @phba: pointer to lpfc hba data structure.
7151  * @cq_event: pointer to the completion queue event to be freed.
7152  *
7153  * This routine is the lock free version of the API invoked to release a
7154  * completion-queue event back into the free pool.
7155  **/
7156 void
__lpfc_sli4_cq_event_release(struct lpfc_hba * phba,struct lpfc_cq_event * cq_event)7157 __lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
7158 			     struct lpfc_cq_event *cq_event)
7159 {
7160 	list_add_tail(&cq_event->list, &phba->sli4_hba.sp_cqe_event_pool);
7161 }
7162 
7163 /**
7164  * lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
7165  * @phba: pointer to lpfc hba data structure.
7166  * @cq_event: pointer to the completion queue event to be freed.
7167  *
7168  * This routine is the lock version of the API invoked to release a
7169  * completion-queue event back into the free pool.
7170  **/
7171 void
lpfc_sli4_cq_event_release(struct lpfc_hba * phba,struct lpfc_cq_event * cq_event)7172 lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
7173 			   struct lpfc_cq_event *cq_event)
7174 {
7175 	unsigned long iflags;
7176 	spin_lock_irqsave(&phba->hbalock, iflags);
7177 	__lpfc_sli4_cq_event_release(phba, cq_event);
7178 	spin_unlock_irqrestore(&phba->hbalock, iflags);
7179 }
7180 
7181 /**
7182  * lpfc_sli4_cq_event_release_all - Release all cq events to the free pool
7183  * @phba: pointer to lpfc hba data structure.
7184  *
7185  * This routine is to free all the pending completion-queue events to the
7186  * back into the free pool for device reset.
7187  **/
7188 static void
lpfc_sli4_cq_event_release_all(struct lpfc_hba * phba)7189 lpfc_sli4_cq_event_release_all(struct lpfc_hba *phba)
7190 {
7191 	LIST_HEAD(cqelist);
7192 	struct lpfc_cq_event *cqe;
7193 	unsigned long iflags;
7194 
7195 	/* Retrieve all the pending WCQEs from pending WCQE lists */
7196 	spin_lock_irqsave(&phba->hbalock, iflags);
7197 	/* Pending FCP XRI abort events */
7198 	list_splice_init(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue,
7199 			 &cqelist);
7200 	/* Pending ELS XRI abort events */
7201 	list_splice_init(&phba->sli4_hba.sp_els_xri_aborted_work_queue,
7202 			 &cqelist);
7203 	/* Pending asynnc events */
7204 	list_splice_init(&phba->sli4_hba.sp_asynce_work_queue,
7205 			 &cqelist);
7206 	spin_unlock_irqrestore(&phba->hbalock, iflags);
7207 
7208 	while (!list_empty(&cqelist)) {
7209 		list_remove_head(&cqelist, cqe, struct lpfc_cq_event, list);
7210 		lpfc_sli4_cq_event_release(phba, cqe);
7211 	}
7212 }
7213 
7214 /**
7215  * lpfc_pci_function_reset - Reset pci function.
7216  * @phba: pointer to lpfc hba data structure.
7217  *
7218  * This routine is invoked to request a PCI function reset. It will destroys
7219  * all resources assigned to the PCI function which originates this request.
7220  *
7221  * Return codes
7222  *      0 - successful
7223  *      -ENOMEM - No available memory
7224  *      -EIO - The mailbox failed to complete successfully.
7225  **/
7226 int
lpfc_pci_function_reset(struct lpfc_hba * phba)7227 lpfc_pci_function_reset(struct lpfc_hba *phba)
7228 {
7229 	LPFC_MBOXQ_t *mboxq;
7230 	uint32_t rc = 0, if_type;
7231 	uint32_t shdr_status, shdr_add_status;
7232 	uint32_t rdy_chk, num_resets = 0, reset_again = 0;
7233 	union lpfc_sli4_cfg_shdr *shdr;
7234 	struct lpfc_register reg_data;
7235 	uint16_t devid;
7236 
7237 	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
7238 	switch (if_type) {
7239 	case LPFC_SLI_INTF_IF_TYPE_0:
7240 		mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
7241 						       GFP_KERNEL);
7242 		if (!mboxq) {
7243 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7244 					"0494 Unable to allocate memory for "
7245 					"issuing SLI_FUNCTION_RESET mailbox "
7246 					"command\n");
7247 			return -ENOMEM;
7248 		}
7249 
7250 		/* Setup PCI function reset mailbox-ioctl command */
7251 		lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
7252 				 LPFC_MBOX_OPCODE_FUNCTION_RESET, 0,
7253 				 LPFC_SLI4_MBX_EMBED);
7254 		rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
7255 		shdr = (union lpfc_sli4_cfg_shdr *)
7256 			&mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
7257 		shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
7258 		shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
7259 					 &shdr->response);
7260 		if (rc != MBX_TIMEOUT)
7261 			mempool_free(mboxq, phba->mbox_mem_pool);
7262 		if (shdr_status || shdr_add_status || rc) {
7263 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7264 					"0495 SLI_FUNCTION_RESET mailbox "
7265 					"failed with status x%x add_status x%x,"
7266 					" mbx status x%x\n",
7267 					shdr_status, shdr_add_status, rc);
7268 			rc = -ENXIO;
7269 		}
7270 		break;
7271 	case LPFC_SLI_INTF_IF_TYPE_2:
7272 		for (num_resets = 0;
7273 		     num_resets < MAX_IF_TYPE_2_RESETS;
7274 		     num_resets++) {
7275 			reg_data.word0 = 0;
7276 			bf_set(lpfc_sliport_ctrl_end, &reg_data,
7277 			       LPFC_SLIPORT_LITTLE_ENDIAN);
7278 			bf_set(lpfc_sliport_ctrl_ip, &reg_data,
7279 			       LPFC_SLIPORT_INIT_PORT);
7280 			writel(reg_data.word0, phba->sli4_hba.u.if_type2.
7281 			       CTRLregaddr);
7282 			/* flush */
7283 			pci_read_config_word(phba->pcidev,
7284 					     PCI_DEVICE_ID, &devid);
7285 			/*
7286 			 * Poll the Port Status Register and wait for RDY for
7287 			 * up to 10 seconds.  If the port doesn't respond, treat
7288 			 * it as an error.  If the port responds with RN, start
7289 			 * the loop again.
7290 			 */
7291 			for (rdy_chk = 0; rdy_chk < 1000; rdy_chk++) {
7292 				msleep(10);
7293 				if (lpfc_readl(phba->sli4_hba.u.if_type2.
7294 					      STATUSregaddr, &reg_data.word0)) {
7295 					rc = -ENODEV;
7296 					goto out;
7297 				}
7298 				if (bf_get(lpfc_sliport_status_rn, &reg_data))
7299 					reset_again++;
7300 				if (bf_get(lpfc_sliport_status_rdy, &reg_data))
7301 					break;
7302 			}
7303 
7304 			/*
7305 			 * If the port responds to the init request with
7306 			 * reset needed, delay for a bit and restart the loop.
7307 			 */
7308 			if (reset_again && (rdy_chk < 1000)) {
7309 				msleep(10);
7310 				reset_again = 0;
7311 				continue;
7312 			}
7313 
7314 			/* Detect any port errors. */
7315 			if ((bf_get(lpfc_sliport_status_err, &reg_data)) ||
7316 			    (rdy_chk >= 1000)) {
7317 				phba->work_status[0] = readl(
7318 					phba->sli4_hba.u.if_type2.ERR1regaddr);
7319 				phba->work_status[1] = readl(
7320 					phba->sli4_hba.u.if_type2.ERR2regaddr);
7321 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7322 					"2890 Port error detected during port "
7323 					"reset(%d): port status reg 0x%x, "
7324 					"error 1=0x%x, error 2=0x%x\n",
7325 					num_resets, reg_data.word0,
7326 					phba->work_status[0],
7327 					phba->work_status[1]);
7328 				rc = -ENODEV;
7329 			}
7330 
7331 			/*
7332 			 * Terminate the outer loop provided the Port indicated
7333 			 * ready within 10 seconds.
7334 			 */
7335 			if (rdy_chk < 1000)
7336 				break;
7337 		}
7338 		/* delay driver action following IF_TYPE_2 function reset */
7339 		msleep(100);
7340 		break;
7341 	case LPFC_SLI_INTF_IF_TYPE_1:
7342 	default:
7343 		break;
7344 	}
7345 
7346 out:
7347 	/* Catch the not-ready port failure after a port reset. */
7348 	if (num_resets >= MAX_IF_TYPE_2_RESETS)
7349 		rc = -ENODEV;
7350 
7351 	return rc;
7352 }
7353 
7354 /**
7355  * lpfc_sli4_send_nop_mbox_cmds - Send sli-4 nop mailbox commands
7356  * @phba: pointer to lpfc hba data structure.
7357  * @cnt: number of nop mailbox commands to send.
7358  *
7359  * This routine is invoked to send a number @cnt of NOP mailbox command and
7360  * wait for each command to complete.
7361  *
7362  * Return: the number of NOP mailbox command completed.
7363  **/
7364 static int
lpfc_sli4_send_nop_mbox_cmds(struct lpfc_hba * phba,uint32_t cnt)7365 lpfc_sli4_send_nop_mbox_cmds(struct lpfc_hba *phba, uint32_t cnt)
7366 {
7367 	LPFC_MBOXQ_t *mboxq;
7368 	int length, cmdsent;
7369 	uint32_t mbox_tmo;
7370 	uint32_t rc = 0;
7371 	uint32_t shdr_status, shdr_add_status;
7372 	union lpfc_sli4_cfg_shdr *shdr;
7373 
7374 	if (cnt == 0) {
7375 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7376 				"2518 Requested to send 0 NOP mailbox cmd\n");
7377 		return cnt;
7378 	}
7379 
7380 	mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7381 	if (!mboxq) {
7382 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7383 				"2519 Unable to allocate memory for issuing "
7384 				"NOP mailbox command\n");
7385 		return 0;
7386 	}
7387 
7388 	/* Set up NOP SLI4_CONFIG mailbox-ioctl command */
7389 	length = (sizeof(struct lpfc_mbx_nop) -
7390 		  sizeof(struct lpfc_sli4_cfg_mhdr));
7391 	lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
7392 			 LPFC_MBOX_OPCODE_NOP, length, LPFC_SLI4_MBX_EMBED);
7393 
7394 	for (cmdsent = 0; cmdsent < cnt; cmdsent++) {
7395 		if (!phba->sli4_hba.intr_enable)
7396 			rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
7397 		else {
7398 			mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq);
7399 			rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
7400 		}
7401 		if (rc == MBX_TIMEOUT)
7402 			break;
7403 		/* Check return status */
7404 		shdr = (union lpfc_sli4_cfg_shdr *)
7405 			&mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
7406 		shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
7407 		shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
7408 					 &shdr->response);
7409 		if (shdr_status || shdr_add_status || rc) {
7410 			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7411 					"2520 NOP mailbox command failed "
7412 					"status x%x add_status x%x mbx "
7413 					"status x%x\n", shdr_status,
7414 					shdr_add_status, rc);
7415 			break;
7416 		}
7417 	}
7418 
7419 	if (rc != MBX_TIMEOUT)
7420 		mempool_free(mboxq, phba->mbox_mem_pool);
7421 
7422 	return cmdsent;
7423 }
7424 
7425 /**
7426  * lpfc_sli4_pci_mem_setup - Setup SLI4 HBA PCI memory space.
7427  * @phba: pointer to lpfc hba data structure.
7428  *
7429  * This routine is invoked to set up the PCI device memory space for device
7430  * with SLI-4 interface spec.
7431  *
7432  * Return codes
7433  * 	0 - successful
7434  * 	other values - error
7435  **/
7436 static int
lpfc_sli4_pci_mem_setup(struct lpfc_hba * phba)7437 lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba)
7438 {
7439 	struct pci_dev *pdev;
7440 	unsigned long bar0map_len, bar1map_len, bar2map_len;
7441 	int error = -ENODEV;
7442 	uint32_t if_type;
7443 
7444 	/* Obtain PCI device reference */
7445 	if (!phba->pcidev)
7446 		return error;
7447 	else
7448 		pdev = phba->pcidev;
7449 
7450 	/* Set the device DMA mask size */
7451 	if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0
7452 	 || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(64)) != 0) {
7453 		if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0
7454 		 || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(32)) != 0) {
7455 			return error;
7456 		}
7457 	}
7458 
7459 	/*
7460 	 * The BARs and register set definitions and offset locations are
7461 	 * dependent on the if_type.
7462 	 */
7463 	if (pci_read_config_dword(pdev, LPFC_SLI_INTF,
7464 				  &phba->sli4_hba.sli_intf.word0)) {
7465 		return error;
7466 	}
7467 
7468 	/* There is no SLI3 failback for SLI4 devices. */
7469 	if (bf_get(lpfc_sli_intf_valid, &phba->sli4_hba.sli_intf) !=
7470 	    LPFC_SLI_INTF_VALID) {
7471 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7472 				"2894 SLI_INTF reg contents invalid "
7473 				"sli_intf reg 0x%x\n",
7474 				phba->sli4_hba.sli_intf.word0);
7475 		return error;
7476 	}
7477 
7478 	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
7479 	/*
7480 	 * Get the bus address of SLI4 device Bar regions and the
7481 	 * number of bytes required by each mapping. The mapping of the
7482 	 * particular PCI BARs regions is dependent on the type of
7483 	 * SLI4 device.
7484 	 */
7485 	if (pci_resource_start(pdev, 0)) {
7486 		phba->pci_bar0_map = pci_resource_start(pdev, 0);
7487 		bar0map_len = pci_resource_len(pdev, 0);
7488 
7489 		/*
7490 		 * Map SLI4 PCI Config Space Register base to a kernel virtual
7491 		 * addr
7492 		 */
7493 		phba->sli4_hba.conf_regs_memmap_p =
7494 			ioremap(phba->pci_bar0_map, bar0map_len);
7495 		if (!phba->sli4_hba.conf_regs_memmap_p) {
7496 			dev_printk(KERN_ERR, &pdev->dev,
7497 				   "ioremap failed for SLI4 PCI config "
7498 				   "registers.\n");
7499 			goto out;
7500 		}
7501 		/* Set up BAR0 PCI config space register memory map */
7502 		lpfc_sli4_bar0_register_memmap(phba, if_type);
7503 	} else {
7504 		phba->pci_bar0_map = pci_resource_start(pdev, 1);
7505 		bar0map_len = pci_resource_len(pdev, 1);
7506 		if (if_type == LPFC_SLI_INTF_IF_TYPE_2) {
7507 			dev_printk(KERN_ERR, &pdev->dev,
7508 			   "FATAL - No BAR0 mapping for SLI4, if_type 2\n");
7509 			goto out;
7510 		}
7511 		phba->sli4_hba.conf_regs_memmap_p =
7512 				ioremap(phba->pci_bar0_map, bar0map_len);
7513 		if (!phba->sli4_hba.conf_regs_memmap_p) {
7514 			dev_printk(KERN_ERR, &pdev->dev,
7515 				"ioremap failed for SLI4 PCI config "
7516 				"registers.\n");
7517 				goto out;
7518 		}
7519 		lpfc_sli4_bar0_register_memmap(phba, if_type);
7520 	}
7521 
7522 	if ((if_type == LPFC_SLI_INTF_IF_TYPE_0) &&
7523 	    (pci_resource_start(pdev, 2))) {
7524 		/*
7525 		 * Map SLI4 if type 0 HBA Control Register base to a kernel
7526 		 * virtual address and setup the registers.
7527 		 */
7528 		phba->pci_bar1_map = pci_resource_start(pdev, 2);
7529 		bar1map_len = pci_resource_len(pdev, 2);
7530 		phba->sli4_hba.ctrl_regs_memmap_p =
7531 				ioremap(phba->pci_bar1_map, bar1map_len);
7532 		if (!phba->sli4_hba.ctrl_regs_memmap_p) {
7533 			dev_printk(KERN_ERR, &pdev->dev,
7534 			   "ioremap failed for SLI4 HBA control registers.\n");
7535 			goto out_iounmap_conf;
7536 		}
7537 		lpfc_sli4_bar1_register_memmap(phba);
7538 	}
7539 
7540 	if ((if_type == LPFC_SLI_INTF_IF_TYPE_0) &&
7541 	    (pci_resource_start(pdev, 4))) {
7542 		/*
7543 		 * Map SLI4 if type 0 HBA Doorbell Register base to a kernel
7544 		 * virtual address and setup the registers.
7545 		 */
7546 		phba->pci_bar2_map = pci_resource_start(pdev, 4);
7547 		bar2map_len = pci_resource_len(pdev, 4);
7548 		phba->sli4_hba.drbl_regs_memmap_p =
7549 				ioremap(phba->pci_bar2_map, bar2map_len);
7550 		if (!phba->sli4_hba.drbl_regs_memmap_p) {
7551 			dev_printk(KERN_ERR, &pdev->dev,
7552 			   "ioremap failed for SLI4 HBA doorbell registers.\n");
7553 			goto out_iounmap_ctrl;
7554 		}
7555 		error = lpfc_sli4_bar2_register_memmap(phba, LPFC_VF0);
7556 		if (error)
7557 			goto out_iounmap_all;
7558 	}
7559 
7560 	return 0;
7561 
7562 out_iounmap_all:
7563 	iounmap(phba->sli4_hba.drbl_regs_memmap_p);
7564 out_iounmap_ctrl:
7565 	iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
7566 out_iounmap_conf:
7567 	iounmap(phba->sli4_hba.conf_regs_memmap_p);
7568 out:
7569 	return error;
7570 }
7571 
7572 /**
7573  * lpfc_sli4_pci_mem_unset - Unset SLI4 HBA PCI memory space.
7574  * @phba: pointer to lpfc hba data structure.
7575  *
7576  * This routine is invoked to unset the PCI device memory space for device
7577  * with SLI-4 interface spec.
7578  **/
7579 static void
lpfc_sli4_pci_mem_unset(struct lpfc_hba * phba)7580 lpfc_sli4_pci_mem_unset(struct lpfc_hba *phba)
7581 {
7582 	uint32_t if_type;
7583 	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
7584 
7585 	switch (if_type) {
7586 	case LPFC_SLI_INTF_IF_TYPE_0:
7587 		iounmap(phba->sli4_hba.drbl_regs_memmap_p);
7588 		iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
7589 		iounmap(phba->sli4_hba.conf_regs_memmap_p);
7590 		break;
7591 	case LPFC_SLI_INTF_IF_TYPE_2:
7592 		iounmap(phba->sli4_hba.conf_regs_memmap_p);
7593 		break;
7594 	case LPFC_SLI_INTF_IF_TYPE_1:
7595 	default:
7596 		dev_printk(KERN_ERR, &phba->pcidev->dev,
7597 			   "FATAL - unsupported SLI4 interface type - %d\n",
7598 			   if_type);
7599 		break;
7600 	}
7601 }
7602 
7603 /**
7604  * lpfc_sli_enable_msix - Enable MSI-X interrupt mode on SLI-3 device
7605  * @phba: pointer to lpfc hba data structure.
7606  *
7607  * This routine is invoked to enable the MSI-X interrupt vectors to device
7608  * with SLI-3 interface specs. The kernel function pci_enable_msix() is
7609  * called to enable the MSI-X vectors. Note that pci_enable_msix(), once
7610  * invoked, enables either all or nothing, depending on the current
7611  * availability of PCI vector resources. The device driver is responsible
7612  * for calling the individual request_irq() to register each MSI-X vector
7613  * with a interrupt handler, which is done in this function. Note that
7614  * later when device is unloading, the driver should always call free_irq()
7615  * on all MSI-X vectors it has done request_irq() on before calling
7616  * pci_disable_msix(). Failure to do so results in a BUG_ON() and a device
7617  * will be left with MSI-X enabled and leaks its vectors.
7618  *
7619  * Return codes
7620  *   0 - successful
7621  *   other values - error
7622  **/
7623 static int
lpfc_sli_enable_msix(struct lpfc_hba * phba)7624 lpfc_sli_enable_msix(struct lpfc_hba *phba)
7625 {
7626 	int rc, i;
7627 	LPFC_MBOXQ_t *pmb;
7628 
7629 	/* Set up MSI-X multi-message vectors */
7630 	for (i = 0; i < LPFC_MSIX_VECTORS; i++)
7631 		phba->msix_entries[i].entry = i;
7632 
7633 	/* Configure MSI-X capability structure */
7634 	rc = pci_enable_msix(phba->pcidev, phba->msix_entries,
7635 				ARRAY_SIZE(phba->msix_entries));
7636 	if (rc) {
7637 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7638 				"0420 PCI enable MSI-X failed (%d)\n", rc);
7639 		goto msi_fail_out;
7640 	}
7641 	for (i = 0; i < LPFC_MSIX_VECTORS; i++)
7642 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7643 				"0477 MSI-X entry[%d]: vector=x%x "
7644 				"message=%d\n", i,
7645 				phba->msix_entries[i].vector,
7646 				phba->msix_entries[i].entry);
7647 	/*
7648 	 * Assign MSI-X vectors to interrupt handlers
7649 	 */
7650 
7651 	/* vector-0 is associated to slow-path handler */
7652 	rc = request_irq(phba->msix_entries[0].vector,
7653 			 &lpfc_sli_sp_intr_handler, IRQF_SHARED,
7654 			 LPFC_SP_DRIVER_HANDLER_NAME, phba);
7655 	if (rc) {
7656 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7657 				"0421 MSI-X slow-path request_irq failed "
7658 				"(%d)\n", rc);
7659 		goto msi_fail_out;
7660 	}
7661 
7662 	/* vector-1 is associated to fast-path handler */
7663 	rc = request_irq(phba->msix_entries[1].vector,
7664 			 &lpfc_sli_fp_intr_handler, IRQF_SHARED,
7665 			 LPFC_FP_DRIVER_HANDLER_NAME, phba);
7666 
7667 	if (rc) {
7668 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7669 				"0429 MSI-X fast-path request_irq failed "
7670 				"(%d)\n", rc);
7671 		goto irq_fail_out;
7672 	}
7673 
7674 	/*
7675 	 * Configure HBA MSI-X attention conditions to messages
7676 	 */
7677 	pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7678 
7679 	if (!pmb) {
7680 		rc = -ENOMEM;
7681 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7682 				"0474 Unable to allocate memory for issuing "
7683 				"MBOX_CONFIG_MSI command\n");
7684 		goto mem_fail_out;
7685 	}
7686 	rc = lpfc_config_msi(phba, pmb);
7687 	if (rc)
7688 		goto mbx_fail_out;
7689 	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
7690 	if (rc != MBX_SUCCESS) {
7691 		lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
7692 				"0351 Config MSI mailbox command failed, "
7693 				"mbxCmd x%x, mbxStatus x%x\n",
7694 				pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus);
7695 		goto mbx_fail_out;
7696 	}
7697 
7698 	/* Free memory allocated for mailbox command */
7699 	mempool_free(pmb, phba->mbox_mem_pool);
7700 	return rc;
7701 
7702 mbx_fail_out:
7703 	/* Free memory allocated for mailbox command */
7704 	mempool_free(pmb, phba->mbox_mem_pool);
7705 
7706 mem_fail_out:
7707 	/* free the irq already requested */
7708 	free_irq(phba->msix_entries[1].vector, phba);
7709 
7710 irq_fail_out:
7711 	/* free the irq already requested */
7712 	free_irq(phba->msix_entries[0].vector, phba);
7713 
7714 msi_fail_out:
7715 	/* Unconfigure MSI-X capability structure */
7716 	pci_disable_msix(phba->pcidev);
7717 	return rc;
7718 }
7719 
7720 /**
7721  * lpfc_sli_disable_msix - Disable MSI-X interrupt mode on SLI-3 device.
7722  * @phba: pointer to lpfc hba data structure.
7723  *
7724  * This routine is invoked to release the MSI-X vectors and then disable the
7725  * MSI-X interrupt mode to device with SLI-3 interface spec.
7726  **/
7727 static void
lpfc_sli_disable_msix(struct lpfc_hba * phba)7728 lpfc_sli_disable_msix(struct lpfc_hba *phba)
7729 {
7730 	int i;
7731 
7732 	/* Free up MSI-X multi-message vectors */
7733 	for (i = 0; i < LPFC_MSIX_VECTORS; i++)
7734 		free_irq(phba->msix_entries[i].vector, phba);
7735 	/* Disable MSI-X */
7736 	pci_disable_msix(phba->pcidev);
7737 
7738 	return;
7739 }
7740 
7741 /**
7742  * lpfc_sli_enable_msi - Enable MSI interrupt mode on SLI-3 device.
7743  * @phba: pointer to lpfc hba data structure.
7744  *
7745  * This routine is invoked to enable the MSI interrupt mode to device with
7746  * SLI-3 interface spec. The kernel function pci_enable_msi() is called to
7747  * enable the MSI vector. The device driver is responsible for calling the
7748  * request_irq() to register MSI vector with a interrupt the handler, which
7749  * is done in this function.
7750  *
7751  * Return codes
7752  * 	0 - successful
7753  * 	other values - error
7754  */
7755 static int
lpfc_sli_enable_msi(struct lpfc_hba * phba)7756 lpfc_sli_enable_msi(struct lpfc_hba *phba)
7757 {
7758 	int rc;
7759 
7760 	rc = pci_enable_msi(phba->pcidev);
7761 	if (!rc)
7762 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7763 				"0462 PCI enable MSI mode success.\n");
7764 	else {
7765 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7766 				"0471 PCI enable MSI mode failed (%d)\n", rc);
7767 		return rc;
7768 	}
7769 
7770 	rc = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
7771 			 IRQF_SHARED, LPFC_DRIVER_NAME, phba);
7772 	if (rc) {
7773 		pci_disable_msi(phba->pcidev);
7774 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7775 				"0478 MSI request_irq failed (%d)\n", rc);
7776 	}
7777 	return rc;
7778 }
7779 
7780 /**
7781  * lpfc_sli_disable_msi - Disable MSI interrupt mode to SLI-3 device.
7782  * @phba: pointer to lpfc hba data structure.
7783  *
7784  * This routine is invoked to disable the MSI interrupt mode to device with
7785  * SLI-3 interface spec. The driver calls free_irq() on MSI vector it has
7786  * done request_irq() on before calling pci_disable_msi(). Failure to do so
7787  * results in a BUG_ON() and a device will be left with MSI enabled and leaks
7788  * its vector.
7789  */
7790 static void
lpfc_sli_disable_msi(struct lpfc_hba * phba)7791 lpfc_sli_disable_msi(struct lpfc_hba *phba)
7792 {
7793 	free_irq(phba->pcidev->irq, phba);
7794 	pci_disable_msi(phba->pcidev);
7795 	return;
7796 }
7797 
7798 /**
7799  * lpfc_sli_enable_intr - Enable device interrupt to SLI-3 device.
7800  * @phba: pointer to lpfc hba data structure.
7801  *
7802  * This routine is invoked to enable device interrupt and associate driver's
7803  * interrupt handler(s) to interrupt vector(s) to device with SLI-3 interface
7804  * spec. Depends on the interrupt mode configured to the driver, the driver
7805  * will try to fallback from the configured interrupt mode to an interrupt
7806  * mode which is supported by the platform, kernel, and device in the order
7807  * of:
7808  * MSI-X -> MSI -> IRQ.
7809  *
7810  * Return codes
7811  *   0 - successful
7812  *   other values - error
7813  **/
7814 static uint32_t
lpfc_sli_enable_intr(struct lpfc_hba * phba,uint32_t cfg_mode)7815 lpfc_sli_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
7816 {
7817 	uint32_t intr_mode = LPFC_INTR_ERROR;
7818 	int retval;
7819 
7820 	if (cfg_mode == 2) {
7821 		/* Need to issue conf_port mbox cmd before conf_msi mbox cmd */
7822 		retval = lpfc_sli_config_port(phba, LPFC_SLI_REV3);
7823 		if (!retval) {
7824 			/* Now, try to enable MSI-X interrupt mode */
7825 			retval = lpfc_sli_enable_msix(phba);
7826 			if (!retval) {
7827 				/* Indicate initialization to MSI-X mode */
7828 				phba->intr_type = MSIX;
7829 				intr_mode = 2;
7830 			}
7831 		}
7832 	}
7833 
7834 	/* Fallback to MSI if MSI-X initialization failed */
7835 	if (cfg_mode >= 1 && phba->intr_type == NONE) {
7836 		retval = lpfc_sli_enable_msi(phba);
7837 		if (!retval) {
7838 			/* Indicate initialization to MSI mode */
7839 			phba->intr_type = MSI;
7840 			intr_mode = 1;
7841 		}
7842 	}
7843 
7844 	/* Fallback to INTx if both MSI-X/MSI initalization failed */
7845 	if (phba->intr_type == NONE) {
7846 		retval = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
7847 				     IRQF_SHARED, LPFC_DRIVER_NAME, phba);
7848 		if (!retval) {
7849 			/* Indicate initialization to INTx mode */
7850 			phba->intr_type = INTx;
7851 			intr_mode = 0;
7852 		}
7853 	}
7854 	return intr_mode;
7855 }
7856 
7857 /**
7858  * lpfc_sli_disable_intr - Disable device interrupt to SLI-3 device.
7859  * @phba: pointer to lpfc hba data structure.
7860  *
7861  * This routine is invoked to disable device interrupt and disassociate the
7862  * driver's interrupt handler(s) from interrupt vector(s) to device with
7863  * SLI-3 interface spec. Depending on the interrupt mode, the driver will
7864  * release the interrupt vector(s) for the message signaled interrupt.
7865  **/
7866 static void
lpfc_sli_disable_intr(struct lpfc_hba * phba)7867 lpfc_sli_disable_intr(struct lpfc_hba *phba)
7868 {
7869 	/* Disable the currently initialized interrupt mode */
7870 	if (phba->intr_type == MSIX)
7871 		lpfc_sli_disable_msix(phba);
7872 	else if (phba->intr_type == MSI)
7873 		lpfc_sli_disable_msi(phba);
7874 	else if (phba->intr_type == INTx)
7875 		free_irq(phba->pcidev->irq, phba);
7876 
7877 	/* Reset interrupt management states */
7878 	phba->intr_type = NONE;
7879 	phba->sli.slistat.sli_intr = 0;
7880 
7881 	return;
7882 }
7883 
7884 /**
7885  * lpfc_sli4_enable_msix - Enable MSI-X interrupt mode to SLI-4 device
7886  * @phba: pointer to lpfc hba data structure.
7887  *
7888  * This routine is invoked to enable the MSI-X interrupt vectors to device
7889  * with SLI-4 interface spec. The kernel function pci_enable_msix() is called
7890  * to enable the MSI-X vectors. Note that pci_enable_msix(), once invoked,
7891  * enables either all or nothing, depending on the current availability of
7892  * PCI vector resources. The device driver is responsible for calling the
7893  * individual request_irq() to register each MSI-X vector with a interrupt
7894  * handler, which is done in this function. Note that later when device is
7895  * unloading, the driver should always call free_irq() on all MSI-X vectors
7896  * it has done request_irq() on before calling pci_disable_msix(). Failure
7897  * to do so results in a BUG_ON() and a device will be left with MSI-X
7898  * enabled and leaks its vectors.
7899  *
7900  * Return codes
7901  * 0 - successful
7902  * other values - error
7903  **/
7904 static int
lpfc_sli4_enable_msix(struct lpfc_hba * phba)7905 lpfc_sli4_enable_msix(struct lpfc_hba *phba)
7906 {
7907 	int vectors, rc, index;
7908 
7909 	/* Set up MSI-X multi-message vectors */
7910 	for (index = 0; index < phba->sli4_hba.cfg_eqn; index++)
7911 		phba->sli4_hba.msix_entries[index].entry = index;
7912 
7913 	/* Configure MSI-X capability structure */
7914 	vectors = phba->sli4_hba.cfg_eqn;
7915 enable_msix_vectors:
7916 	rc = pci_enable_msix(phba->pcidev, phba->sli4_hba.msix_entries,
7917 			     vectors);
7918 	if (rc > 1) {
7919 		vectors = rc;
7920 		goto enable_msix_vectors;
7921 	} else if (rc) {
7922 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7923 				"0484 PCI enable MSI-X failed (%d)\n", rc);
7924 		goto msi_fail_out;
7925 	}
7926 
7927 	/* Log MSI-X vector assignment */
7928 	for (index = 0; index < vectors; index++)
7929 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7930 				"0489 MSI-X entry[%d]: vector=x%x "
7931 				"message=%d\n", index,
7932 				phba->sli4_hba.msix_entries[index].vector,
7933 				phba->sli4_hba.msix_entries[index].entry);
7934 	/*
7935 	 * Assign MSI-X vectors to interrupt handlers
7936 	 */
7937 	if (vectors > 1)
7938 		rc = request_irq(phba->sli4_hba.msix_entries[0].vector,
7939 				 &lpfc_sli4_sp_intr_handler, IRQF_SHARED,
7940 				 LPFC_SP_DRIVER_HANDLER_NAME, phba);
7941 	else
7942 		/* All Interrupts need to be handled by one EQ */
7943 		rc = request_irq(phba->sli4_hba.msix_entries[0].vector,
7944 				 &lpfc_sli4_intr_handler, IRQF_SHARED,
7945 				 LPFC_DRIVER_NAME, phba);
7946 	if (rc) {
7947 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7948 				"0485 MSI-X slow-path request_irq failed "
7949 				"(%d)\n", rc);
7950 		goto msi_fail_out;
7951 	}
7952 
7953 	/* The rest of the vector(s) are associated to fast-path handler(s) */
7954 	for (index = 1; index < vectors; index++) {
7955 		phba->sli4_hba.fcp_eq_hdl[index - 1].idx = index - 1;
7956 		phba->sli4_hba.fcp_eq_hdl[index - 1].phba = phba;
7957 		rc = request_irq(phba->sli4_hba.msix_entries[index].vector,
7958 				 &lpfc_sli4_fp_intr_handler, IRQF_SHARED,
7959 				 LPFC_FP_DRIVER_HANDLER_NAME,
7960 				 &phba->sli4_hba.fcp_eq_hdl[index - 1]);
7961 		if (rc) {
7962 			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7963 					"0486 MSI-X fast-path (%d) "
7964 					"request_irq failed (%d)\n", index, rc);
7965 			goto cfg_fail_out;
7966 		}
7967 	}
7968 	phba->sli4_hba.msix_vec_nr = vectors;
7969 
7970 	return rc;
7971 
7972 cfg_fail_out:
7973 	/* free the irq already requested */
7974 	for (--index; index >= 1; index--)
7975 		free_irq(phba->sli4_hba.msix_entries[index - 1].vector,
7976 			 &phba->sli4_hba.fcp_eq_hdl[index - 1]);
7977 
7978 	/* free the irq already requested */
7979 	free_irq(phba->sli4_hba.msix_entries[0].vector, phba);
7980 
7981 msi_fail_out:
7982 	/* Unconfigure MSI-X capability structure */
7983 	pci_disable_msix(phba->pcidev);
7984 	return rc;
7985 }
7986 
7987 /**
7988  * lpfc_sli4_disable_msix - Disable MSI-X interrupt mode to SLI-4 device
7989  * @phba: pointer to lpfc hba data structure.
7990  *
7991  * This routine is invoked to release the MSI-X vectors and then disable the
7992  * MSI-X interrupt mode to device with SLI-4 interface spec.
7993  **/
7994 static void
lpfc_sli4_disable_msix(struct lpfc_hba * phba)7995 lpfc_sli4_disable_msix(struct lpfc_hba *phba)
7996 {
7997 	int index;
7998 
7999 	/* Free up MSI-X multi-message vectors */
8000 	free_irq(phba->sli4_hba.msix_entries[0].vector, phba);
8001 
8002 	for (index = 1; index < phba->sli4_hba.msix_vec_nr; index++)
8003 		free_irq(phba->sli4_hba.msix_entries[index].vector,
8004 			 &phba->sli4_hba.fcp_eq_hdl[index - 1]);
8005 
8006 	/* Disable MSI-X */
8007 	pci_disable_msix(phba->pcidev);
8008 
8009 	return;
8010 }
8011 
8012 /**
8013  * lpfc_sli4_enable_msi - Enable MSI interrupt mode to SLI-4 device
8014  * @phba: pointer to lpfc hba data structure.
8015  *
8016  * This routine is invoked to enable the MSI interrupt mode to device with
8017  * SLI-4 interface spec. The kernel function pci_enable_msi() is called
8018  * to enable the MSI vector. The device driver is responsible for calling
8019  * the request_irq() to register MSI vector with a interrupt the handler,
8020  * which is done in this function.
8021  *
8022  * Return codes
8023  * 	0 - successful
8024  * 	other values - error
8025  **/
8026 static int
lpfc_sli4_enable_msi(struct lpfc_hba * phba)8027 lpfc_sli4_enable_msi(struct lpfc_hba *phba)
8028 {
8029 	int rc, index;
8030 
8031 	rc = pci_enable_msi(phba->pcidev);
8032 	if (!rc)
8033 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8034 				"0487 PCI enable MSI mode success.\n");
8035 	else {
8036 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8037 				"0488 PCI enable MSI mode failed (%d)\n", rc);
8038 		return rc;
8039 	}
8040 
8041 	rc = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
8042 			 IRQF_SHARED, LPFC_DRIVER_NAME, phba);
8043 	if (rc) {
8044 		pci_disable_msi(phba->pcidev);
8045 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
8046 				"0490 MSI request_irq failed (%d)\n", rc);
8047 		return rc;
8048 	}
8049 
8050 	for (index = 0; index < phba->cfg_fcp_eq_count; index++) {
8051 		phba->sli4_hba.fcp_eq_hdl[index].idx = index;
8052 		phba->sli4_hba.fcp_eq_hdl[index].phba = phba;
8053 	}
8054 
8055 	return 0;
8056 }
8057 
8058 /**
8059  * lpfc_sli4_disable_msi - Disable MSI interrupt mode to SLI-4 device
8060  * @phba: pointer to lpfc hba data structure.
8061  *
8062  * This routine is invoked to disable the MSI interrupt mode to device with
8063  * SLI-4 interface spec. The driver calls free_irq() on MSI vector it has
8064  * done request_irq() on before calling pci_disable_msi(). Failure to do so
8065  * results in a BUG_ON() and a device will be left with MSI enabled and leaks
8066  * its vector.
8067  **/
8068 static void
lpfc_sli4_disable_msi(struct lpfc_hba * phba)8069 lpfc_sli4_disable_msi(struct lpfc_hba *phba)
8070 {
8071 	free_irq(phba->pcidev->irq, phba);
8072 	pci_disable_msi(phba->pcidev);
8073 	return;
8074 }
8075 
8076 /**
8077  * lpfc_sli4_enable_intr - Enable device interrupt to SLI-4 device
8078  * @phba: pointer to lpfc hba data structure.
8079  *
8080  * This routine is invoked to enable device interrupt and associate driver's
8081  * interrupt handler(s) to interrupt vector(s) to device with SLI-4
8082  * interface spec. Depends on the interrupt mode configured to the driver,
8083  * the driver will try to fallback from the configured interrupt mode to an
8084  * interrupt mode which is supported by the platform, kernel, and device in
8085  * the order of:
8086  * MSI-X -> MSI -> IRQ.
8087  *
8088  * Return codes
8089  * 	0 - successful
8090  * 	other values - error
8091  **/
8092 static uint32_t
lpfc_sli4_enable_intr(struct lpfc_hba * phba,uint32_t cfg_mode)8093 lpfc_sli4_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
8094 {
8095 	uint32_t intr_mode = LPFC_INTR_ERROR;
8096 	int retval, index;
8097 
8098 	if (cfg_mode == 2) {
8099 		/* Preparation before conf_msi mbox cmd */
8100 		retval = 0;
8101 		if (!retval) {
8102 			/* Now, try to enable MSI-X interrupt mode */
8103 			retval = lpfc_sli4_enable_msix(phba);
8104 			if (!retval) {
8105 				/* Indicate initialization to MSI-X mode */
8106 				phba->intr_type = MSIX;
8107 				intr_mode = 2;
8108 			}
8109 		}
8110 	}
8111 
8112 	/* Fallback to MSI if MSI-X initialization failed */
8113 	if (cfg_mode >= 1 && phba->intr_type == NONE) {
8114 		retval = lpfc_sli4_enable_msi(phba);
8115 		if (!retval) {
8116 			/* Indicate initialization to MSI mode */
8117 			phba->intr_type = MSI;
8118 			intr_mode = 1;
8119 		}
8120 	}
8121 
8122 	/* Fallback to INTx if both MSI-X/MSI initalization failed */
8123 	if (phba->intr_type == NONE) {
8124 		retval = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
8125 				     IRQF_SHARED, LPFC_DRIVER_NAME, phba);
8126 		if (!retval) {
8127 			/* Indicate initialization to INTx mode */
8128 			phba->intr_type = INTx;
8129 			intr_mode = 0;
8130 			for (index = 0; index < phba->cfg_fcp_eq_count;
8131 			     index++) {
8132 				phba->sli4_hba.fcp_eq_hdl[index].idx = index;
8133 				phba->sli4_hba.fcp_eq_hdl[index].phba = phba;
8134 			}
8135 		}
8136 	}
8137 	return intr_mode;
8138 }
8139 
8140 /**
8141  * lpfc_sli4_disable_intr - Disable device interrupt to SLI-4 device
8142  * @phba: pointer to lpfc hba data structure.
8143  *
8144  * This routine is invoked to disable device interrupt and disassociate
8145  * the driver's interrupt handler(s) from interrupt vector(s) to device
8146  * with SLI-4 interface spec. Depending on the interrupt mode, the driver
8147  * will release the interrupt vector(s) for the message signaled interrupt.
8148  **/
8149 static void
lpfc_sli4_disable_intr(struct lpfc_hba * phba)8150 lpfc_sli4_disable_intr(struct lpfc_hba *phba)
8151 {
8152 	/* Disable the currently initialized interrupt mode */
8153 	if (phba->intr_type == MSIX)
8154 		lpfc_sli4_disable_msix(phba);
8155 	else if (phba->intr_type == MSI)
8156 		lpfc_sli4_disable_msi(phba);
8157 	else if (phba->intr_type == INTx)
8158 		free_irq(phba->pcidev->irq, phba);
8159 
8160 	/* Reset interrupt management states */
8161 	phba->intr_type = NONE;
8162 	phba->sli.slistat.sli_intr = 0;
8163 
8164 	return;
8165 }
8166 
8167 /**
8168  * lpfc_unset_hba - Unset SLI3 hba device initialization
8169  * @phba: pointer to lpfc hba data structure.
8170  *
8171  * This routine is invoked to unset the HBA device initialization steps to
8172  * a device with SLI-3 interface spec.
8173  **/
8174 static void
lpfc_unset_hba(struct lpfc_hba * phba)8175 lpfc_unset_hba(struct lpfc_hba *phba)
8176 {
8177 	struct lpfc_vport *vport = phba->pport;
8178 	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
8179 
8180 	spin_lock_irq(shost->host_lock);
8181 	vport->load_flag |= FC_UNLOADING;
8182 	spin_unlock_irq(shost->host_lock);
8183 
8184 	kfree(phba->vpi_bmask);
8185 	kfree(phba->vpi_ids);
8186 
8187 	lpfc_stop_hba_timers(phba);
8188 
8189 	phba->pport->work_port_events = 0;
8190 
8191 	lpfc_sli_hba_down(phba);
8192 
8193 	lpfc_sli_brdrestart(phba);
8194 
8195 	lpfc_sli_disable_intr(phba);
8196 
8197 	return;
8198 }
8199 
8200 /**
8201  * lpfc_sli4_unset_hba - Unset SLI4 hba device initialization.
8202  * @phba: pointer to lpfc hba data structure.
8203  *
8204  * This routine is invoked to unset the HBA device initialization steps to
8205  * a device with SLI-4 interface spec.
8206  **/
8207 static void
lpfc_sli4_unset_hba(struct lpfc_hba * phba)8208 lpfc_sli4_unset_hba(struct lpfc_hba *phba)
8209 {
8210 	struct lpfc_vport *vport = phba->pport;
8211 	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
8212 
8213 	spin_lock_irq(shost->host_lock);
8214 	vport->load_flag |= FC_UNLOADING;
8215 	spin_unlock_irq(shost->host_lock);
8216 
8217 	phba->pport->work_port_events = 0;
8218 
8219 	/* Stop the SLI4 device port */
8220 	lpfc_stop_port(phba);
8221 
8222 	lpfc_sli4_disable_intr(phba);
8223 
8224 	/* Reset SLI4 HBA FCoE function */
8225 	lpfc_pci_function_reset(phba);
8226 	lpfc_sli4_queue_destroy(phba);
8227 
8228 	return;
8229 }
8230 
8231 /**
8232  * lpfc_sli4_xri_exchange_busy_wait - Wait for device XRI exchange busy
8233  * @phba: Pointer to HBA context object.
8234  *
8235  * This function is called in the SLI4 code path to wait for completion
8236  * of device's XRIs exchange busy. It will check the XRI exchange busy
8237  * on outstanding FCP and ELS I/Os every 10ms for up to 10 seconds; after
8238  * that, it will check the XRI exchange busy on outstanding FCP and ELS
8239  * I/Os every 30 seconds, log error message, and wait forever. Only when
8240  * all XRI exchange busy complete, the driver unload shall proceed with
8241  * invoking the function reset ioctl mailbox command to the CNA and the
8242  * the rest of the driver unload resource release.
8243  **/
8244 static void
lpfc_sli4_xri_exchange_busy_wait(struct lpfc_hba * phba)8245 lpfc_sli4_xri_exchange_busy_wait(struct lpfc_hba *phba)
8246 {
8247 	int wait_time = 0;
8248 	int fcp_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_scsi_buf_list);
8249 	int els_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
8250 
8251 	while (!fcp_xri_cmpl || !els_xri_cmpl) {
8252 		if (wait_time > LPFC_XRI_EXCH_BUSY_WAIT_TMO) {
8253 			if (!fcp_xri_cmpl)
8254 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8255 						"2877 FCP XRI exchange busy "
8256 						"wait time: %d seconds.\n",
8257 						wait_time/1000);
8258 			if (!els_xri_cmpl)
8259 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8260 						"2878 ELS XRI exchange busy "
8261 						"wait time: %d seconds.\n",
8262 						wait_time/1000);
8263 			msleep(LPFC_XRI_EXCH_BUSY_WAIT_T2);
8264 			wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T2;
8265 		} else {
8266 			msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1);
8267 			wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T1;
8268 		}
8269 		fcp_xri_cmpl =
8270 			list_empty(&phba->sli4_hba.lpfc_abts_scsi_buf_list);
8271 		els_xri_cmpl =
8272 			list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
8273 	}
8274 }
8275 
8276 /**
8277  * lpfc_sli4_hba_unset - Unset the fcoe hba
8278  * @phba: Pointer to HBA context object.
8279  *
8280  * This function is called in the SLI4 code path to reset the HBA's FCoE
8281  * function. The caller is not required to hold any lock. This routine
8282  * issues PCI function reset mailbox command to reset the FCoE function.
8283  * At the end of the function, it calls lpfc_hba_down_post function to
8284  * free any pending commands.
8285  **/
8286 static void
lpfc_sli4_hba_unset(struct lpfc_hba * phba)8287 lpfc_sli4_hba_unset(struct lpfc_hba *phba)
8288 {
8289 	int wait_cnt = 0;
8290 	LPFC_MBOXQ_t *mboxq;
8291 	struct pci_dev *pdev = phba->pcidev;
8292 
8293 	lpfc_stop_hba_timers(phba);
8294 	phba->sli4_hba.intr_enable = 0;
8295 
8296 	/*
8297 	 * Gracefully wait out the potential current outstanding asynchronous
8298 	 * mailbox command.
8299 	 */
8300 
8301 	/* First, block any pending async mailbox command from posted */
8302 	spin_lock_irq(&phba->hbalock);
8303 	phba->sli.sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
8304 	spin_unlock_irq(&phba->hbalock);
8305 	/* Now, trying to wait it out if we can */
8306 	while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
8307 		msleep(10);
8308 		if (++wait_cnt > LPFC_ACTIVE_MBOX_WAIT_CNT)
8309 			break;
8310 	}
8311 	/* Forcefully release the outstanding mailbox command if timed out */
8312 	if (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
8313 		spin_lock_irq(&phba->hbalock);
8314 		mboxq = phba->sli.mbox_active;
8315 		mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;
8316 		__lpfc_mbox_cmpl_put(phba, mboxq);
8317 		phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
8318 		phba->sli.mbox_active = NULL;
8319 		spin_unlock_irq(&phba->hbalock);
8320 	}
8321 
8322 	/* Abort all iocbs associated with the hba */
8323 	lpfc_sli_hba_iocb_abort(phba);
8324 
8325 	/* Wait for completion of device XRI exchange busy */
8326 	lpfc_sli4_xri_exchange_busy_wait(phba);
8327 
8328 	/* Disable PCI subsystem interrupt */
8329 	lpfc_sli4_disable_intr(phba);
8330 
8331 	/* Disable SR-IOV if enabled */
8332 	if (phba->cfg_sriov_nr_virtfn)
8333 		pci_disable_sriov(pdev);
8334 
8335 	/* Stop kthread signal shall trigger work_done one more time */
8336 	kthread_stop(phba->worker_thread);
8337 
8338 	/* Reset SLI4 HBA FCoE function */
8339 	lpfc_pci_function_reset(phba);
8340 	lpfc_sli4_queue_destroy(phba);
8341 
8342 	/* Stop the SLI4 device port */
8343 	phba->pport->work_port_events = 0;
8344 }
8345 
8346  /**
8347  * lpfc_pc_sli4_params_get - Get the SLI4_PARAMS port capabilities.
8348  * @phba: Pointer to HBA context object.
8349  * @mboxq: Pointer to the mailboxq memory for the mailbox command response.
8350  *
8351  * This function is called in the SLI4 code path to read the port's
8352  * sli4 capabilities.
8353  *
8354  * This function may be be called from any context that can block-wait
8355  * for the completion.  The expectation is that this routine is called
8356  * typically from probe_one or from the online routine.
8357  **/
8358 int
lpfc_pc_sli4_params_get(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)8359 lpfc_pc_sli4_params_get(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
8360 {
8361 	int rc;
8362 	struct lpfc_mqe *mqe;
8363 	struct lpfc_pc_sli4_params *sli4_params;
8364 	uint32_t mbox_tmo;
8365 
8366 	rc = 0;
8367 	mqe = &mboxq->u.mqe;
8368 
8369 	/* Read the port's SLI4 Parameters port capabilities */
8370 	lpfc_pc_sli4_params(mboxq);
8371 	if (!phba->sli4_hba.intr_enable)
8372 		rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
8373 	else {
8374 		mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq);
8375 		rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
8376 	}
8377 
8378 	if (unlikely(rc))
8379 		return 1;
8380 
8381 	sli4_params = &phba->sli4_hba.pc_sli4_params;
8382 	sli4_params->if_type = bf_get(if_type, &mqe->un.sli4_params);
8383 	sli4_params->sli_rev = bf_get(sli_rev, &mqe->un.sli4_params);
8384 	sli4_params->sli_family = bf_get(sli_family, &mqe->un.sli4_params);
8385 	sli4_params->featurelevel_1 = bf_get(featurelevel_1,
8386 					     &mqe->un.sli4_params);
8387 	sli4_params->featurelevel_2 = bf_get(featurelevel_2,
8388 					     &mqe->un.sli4_params);
8389 	sli4_params->proto_types = mqe->un.sli4_params.word3;
8390 	sli4_params->sge_supp_len = mqe->un.sli4_params.sge_supp_len;
8391 	sli4_params->if_page_sz = bf_get(if_page_sz, &mqe->un.sli4_params);
8392 	sli4_params->rq_db_window = bf_get(rq_db_window, &mqe->un.sli4_params);
8393 	sli4_params->loopbk_scope = bf_get(loopbk_scope, &mqe->un.sli4_params);
8394 	sli4_params->eq_pages_max = bf_get(eq_pages, &mqe->un.sli4_params);
8395 	sli4_params->eqe_size = bf_get(eqe_size, &mqe->un.sli4_params);
8396 	sli4_params->cq_pages_max = bf_get(cq_pages, &mqe->un.sli4_params);
8397 	sli4_params->cqe_size = bf_get(cqe_size, &mqe->un.sli4_params);
8398 	sli4_params->mq_pages_max = bf_get(mq_pages, &mqe->un.sli4_params);
8399 	sli4_params->mqe_size = bf_get(mqe_size, &mqe->un.sli4_params);
8400 	sli4_params->mq_elem_cnt = bf_get(mq_elem_cnt, &mqe->un.sli4_params);
8401 	sli4_params->wq_pages_max = bf_get(wq_pages, &mqe->un.sli4_params);
8402 	sli4_params->wqe_size = bf_get(wqe_size, &mqe->un.sli4_params);
8403 	sli4_params->rq_pages_max = bf_get(rq_pages, &mqe->un.sli4_params);
8404 	sli4_params->rqe_size = bf_get(rqe_size, &mqe->un.sli4_params);
8405 	sli4_params->hdr_pages_max = bf_get(hdr_pages, &mqe->un.sli4_params);
8406 	sli4_params->hdr_size = bf_get(hdr_size, &mqe->un.sli4_params);
8407 	sli4_params->hdr_pp_align = bf_get(hdr_pp_align, &mqe->un.sli4_params);
8408 	sli4_params->sgl_pages_max = bf_get(sgl_pages, &mqe->un.sli4_params);
8409 	sli4_params->sgl_pp_align = bf_get(sgl_pp_align, &mqe->un.sli4_params);
8410 
8411 	/* Make sure that sge_supp_len can be handled by the driver */
8412 	if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)
8413 		sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;
8414 
8415 	return rc;
8416 }
8417 
8418 /**
8419  * lpfc_get_sli4_parameters - Get the SLI4 Config PARAMETERS.
8420  * @phba: Pointer to HBA context object.
8421  * @mboxq: Pointer to the mailboxq memory for the mailbox command response.
8422  *
8423  * This function is called in the SLI4 code path to read the port's
8424  * sli4 capabilities.
8425  *
8426  * This function may be be called from any context that can block-wait
8427  * for the completion.  The expectation is that this routine is called
8428  * typically from probe_one or from the online routine.
8429  **/
8430 int
lpfc_get_sli4_parameters(struct lpfc_hba * phba,LPFC_MBOXQ_t * mboxq)8431 lpfc_get_sli4_parameters(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
8432 {
8433 	int rc;
8434 	struct lpfc_mqe *mqe = &mboxq->u.mqe;
8435 	struct lpfc_pc_sli4_params *sli4_params;
8436 	uint32_t mbox_tmo;
8437 	int length;
8438 	struct lpfc_sli4_parameters *mbx_sli4_parameters;
8439 
8440 	/*
8441 	 * By default, the driver assumes the SLI4 port requires RPI
8442 	 * header postings.  The SLI4_PARAM response will correct this
8443 	 * assumption.
8444 	 */
8445 	phba->sli4_hba.rpi_hdrs_in_use = 1;
8446 
8447 	/* Read the port's SLI4 Config Parameters */
8448 	length = (sizeof(struct lpfc_mbx_get_sli4_parameters) -
8449 		  sizeof(struct lpfc_sli4_cfg_mhdr));
8450 	lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
8451 			 LPFC_MBOX_OPCODE_GET_SLI4_PARAMETERS,
8452 			 length, LPFC_SLI4_MBX_EMBED);
8453 	if (!phba->sli4_hba.intr_enable)
8454 		rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
8455 	else {
8456 		mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq);
8457 		rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
8458 	}
8459 	if (unlikely(rc))
8460 		return rc;
8461 	sli4_params = &phba->sli4_hba.pc_sli4_params;
8462 	mbx_sli4_parameters = &mqe->un.get_sli4_parameters.sli4_parameters;
8463 	sli4_params->if_type = bf_get(cfg_if_type, mbx_sli4_parameters);
8464 	sli4_params->sli_rev = bf_get(cfg_sli_rev, mbx_sli4_parameters);
8465 	sli4_params->sli_family = bf_get(cfg_sli_family, mbx_sli4_parameters);
8466 	sli4_params->featurelevel_1 = bf_get(cfg_sli_hint_1,
8467 					     mbx_sli4_parameters);
8468 	sli4_params->featurelevel_2 = bf_get(cfg_sli_hint_2,
8469 					     mbx_sli4_parameters);
8470 	if (bf_get(cfg_phwq, mbx_sli4_parameters))
8471 		phba->sli3_options |= LPFC_SLI4_PHWQ_ENABLED;
8472 	else
8473 		phba->sli3_options &= ~LPFC_SLI4_PHWQ_ENABLED;
8474 	sli4_params->sge_supp_len = mbx_sli4_parameters->sge_supp_len;
8475 	sli4_params->loopbk_scope = bf_get(loopbk_scope, mbx_sli4_parameters);
8476 	sli4_params->cqv = bf_get(cfg_cqv, mbx_sli4_parameters);
8477 	sli4_params->mqv = bf_get(cfg_mqv, mbx_sli4_parameters);
8478 	sli4_params->wqv = bf_get(cfg_wqv, mbx_sli4_parameters);
8479 	sli4_params->rqv = bf_get(cfg_rqv, mbx_sli4_parameters);
8480 	sli4_params->sgl_pages_max = bf_get(cfg_sgl_page_cnt,
8481 					    mbx_sli4_parameters);
8482 	sli4_params->sgl_pp_align = bf_get(cfg_sgl_pp_align,
8483 					   mbx_sli4_parameters);
8484 	phba->sli4_hba.extents_in_use = bf_get(cfg_ext, mbx_sli4_parameters);
8485 	phba->sli4_hba.rpi_hdrs_in_use = bf_get(cfg_hdrr, mbx_sli4_parameters);
8486 
8487 	/* Make sure that sge_supp_len can be handled by the driver */
8488 	if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)
8489 		sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;
8490 
8491 	return 0;
8492 }
8493 
8494 /**
8495  * lpfc_pci_probe_one_s3 - PCI probe func to reg SLI-3 device to PCI subsystem.
8496  * @pdev: pointer to PCI device
8497  * @pid: pointer to PCI device identifier
8498  *
8499  * This routine is to be called to attach a device with SLI-3 interface spec
8500  * to the PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
8501  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
8502  * information of the device and driver to see if the driver state that it can
8503  * support this kind of device. If the match is successful, the driver core
8504  * invokes this routine. If this routine determines it can claim the HBA, it
8505  * does all the initialization that it needs to do to handle the HBA properly.
8506  *
8507  * Return code
8508  * 	0 - driver can claim the device
8509  * 	negative value - driver can not claim the device
8510  **/
8511 static int __devinit
lpfc_pci_probe_one_s3(struct pci_dev * pdev,const struct pci_device_id * pid)8512 lpfc_pci_probe_one_s3(struct pci_dev *pdev, const struct pci_device_id *pid)
8513 {
8514 	struct lpfc_hba   *phba;
8515 	struct lpfc_vport *vport = NULL;
8516 	struct Scsi_Host  *shost = NULL;
8517 	int error;
8518 	uint32_t cfg_mode, intr_mode;
8519 
8520 	/* Allocate memory for HBA structure */
8521 	phba = lpfc_hba_alloc(pdev);
8522 	if (!phba)
8523 		return -ENOMEM;
8524 
8525 	/* Perform generic PCI device enabling operation */
8526 	error = lpfc_enable_pci_dev(phba);
8527 	if (error)
8528 		goto out_free_phba;
8529 
8530 	/* Set up SLI API function jump table for PCI-device group-0 HBAs */
8531 	error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_LP);
8532 	if (error)
8533 		goto out_disable_pci_dev;
8534 
8535 	/* Set up SLI-3 specific device PCI memory space */
8536 	error = lpfc_sli_pci_mem_setup(phba);
8537 	if (error) {
8538 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8539 				"1402 Failed to set up pci memory space.\n");
8540 		goto out_disable_pci_dev;
8541 	}
8542 
8543 	/* Set up phase-1 common device driver resources */
8544 	error = lpfc_setup_driver_resource_phase1(phba);
8545 	if (error) {
8546 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8547 				"1403 Failed to set up driver resource.\n");
8548 		goto out_unset_pci_mem_s3;
8549 	}
8550 
8551 	/* Set up SLI-3 specific device driver resources */
8552 	error = lpfc_sli_driver_resource_setup(phba);
8553 	if (error) {
8554 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8555 				"1404 Failed to set up driver resource.\n");
8556 		goto out_unset_pci_mem_s3;
8557 	}
8558 
8559 	/* Initialize and populate the iocb list per host */
8560 	error = lpfc_init_iocb_list(phba, LPFC_IOCB_LIST_CNT);
8561 	if (error) {
8562 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8563 				"1405 Failed to initialize iocb list.\n");
8564 		goto out_unset_driver_resource_s3;
8565 	}
8566 
8567 	/* Set up common device driver resources */
8568 	error = lpfc_setup_driver_resource_phase2(phba);
8569 	if (error) {
8570 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8571 				"1406 Failed to set up driver resource.\n");
8572 		goto out_free_iocb_list;
8573 	}
8574 
8575 	/* Get the default values for Model Name and Description */
8576 	lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
8577 
8578 	/* Create SCSI host to the physical port */
8579 	error = lpfc_create_shost(phba);
8580 	if (error) {
8581 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8582 				"1407 Failed to create scsi host.\n");
8583 		goto out_unset_driver_resource;
8584 	}
8585 
8586 	/* Configure sysfs attributes */
8587 	vport = phba->pport;
8588 	error = lpfc_alloc_sysfs_attr(vport);
8589 	if (error) {
8590 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8591 				"1476 Failed to allocate sysfs attr\n");
8592 		goto out_destroy_shost;
8593 	}
8594 
8595 	shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
8596 	/* Now, trying to enable interrupt and bring up the device */
8597 	cfg_mode = phba->cfg_use_msi;
8598 	while (true) {
8599 		/* Put device to a known state before enabling interrupt */
8600 		lpfc_stop_port(phba);
8601 		/* Configure and enable interrupt */
8602 		intr_mode = lpfc_sli_enable_intr(phba, cfg_mode);
8603 		if (intr_mode == LPFC_INTR_ERROR) {
8604 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8605 					"0431 Failed to enable interrupt.\n");
8606 			error = -ENODEV;
8607 			goto out_free_sysfs_attr;
8608 		}
8609 		/* SLI-3 HBA setup */
8610 		if (lpfc_sli_hba_setup(phba)) {
8611 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8612 					"1477 Failed to set up hba\n");
8613 			error = -ENODEV;
8614 			goto out_remove_device;
8615 		}
8616 
8617 		/* Wait 50ms for the interrupts of previous mailbox commands */
8618 		msleep(50);
8619 		/* Check active interrupts on message signaled interrupts */
8620 		if (intr_mode == 0 ||
8621 		    phba->sli.slistat.sli_intr > LPFC_MSIX_VECTORS) {
8622 			/* Log the current active interrupt mode */
8623 			phba->intr_mode = intr_mode;
8624 			lpfc_log_intr_mode(phba, intr_mode);
8625 			break;
8626 		} else {
8627 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8628 					"0447 Configure interrupt mode (%d) "
8629 					"failed active interrupt test.\n",
8630 					intr_mode);
8631 			/* Disable the current interrupt mode */
8632 			lpfc_sli_disable_intr(phba);
8633 			/* Try next level of interrupt mode */
8634 			cfg_mode = --intr_mode;
8635 		}
8636 	}
8637 
8638 	/* Perform post initialization setup */
8639 	lpfc_post_init_setup(phba);
8640 
8641 	/* Check if there are static vports to be created. */
8642 	lpfc_create_static_vport(phba);
8643 
8644 	return 0;
8645 
8646 out_remove_device:
8647 	lpfc_unset_hba(phba);
8648 out_free_sysfs_attr:
8649 	lpfc_free_sysfs_attr(vport);
8650 out_destroy_shost:
8651 	lpfc_destroy_shost(phba);
8652 out_unset_driver_resource:
8653 	lpfc_unset_driver_resource_phase2(phba);
8654 out_free_iocb_list:
8655 	lpfc_free_iocb_list(phba);
8656 out_unset_driver_resource_s3:
8657 	lpfc_sli_driver_resource_unset(phba);
8658 out_unset_pci_mem_s3:
8659 	lpfc_sli_pci_mem_unset(phba);
8660 out_disable_pci_dev:
8661 	lpfc_disable_pci_dev(phba);
8662 	if (shost)
8663 		scsi_host_put(shost);
8664 out_free_phba:
8665 	lpfc_hba_free(phba);
8666 	return error;
8667 }
8668 
8669 /**
8670  * lpfc_pci_remove_one_s3 - PCI func to unreg SLI-3 device from PCI subsystem.
8671  * @pdev: pointer to PCI device
8672  *
8673  * This routine is to be called to disattach a device with SLI-3 interface
8674  * spec from PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
8675  * removed from PCI bus, it performs all the necessary cleanup for the HBA
8676  * device to be removed from the PCI subsystem properly.
8677  **/
8678 static void __devexit
lpfc_pci_remove_one_s3(struct pci_dev * pdev)8679 lpfc_pci_remove_one_s3(struct pci_dev *pdev)
8680 {
8681 	struct Scsi_Host  *shost = pci_get_drvdata(pdev);
8682 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
8683 	struct lpfc_vport **vports;
8684 	struct lpfc_hba   *phba = vport->phba;
8685 	int i;
8686 	int bars = pci_select_bars(pdev, IORESOURCE_MEM);
8687 
8688 	spin_lock_irq(&phba->hbalock);
8689 	vport->load_flag |= FC_UNLOADING;
8690 	spin_unlock_irq(&phba->hbalock);
8691 
8692 	lpfc_free_sysfs_attr(vport);
8693 
8694 	/* Release all the vports against this physical port */
8695 	vports = lpfc_create_vport_work_array(phba);
8696 	if (vports != NULL)
8697 		for (i = 1; i <= phba->max_vports && vports[i] != NULL; i++)
8698 			fc_vport_terminate(vports[i]->fc_vport);
8699 	lpfc_destroy_vport_work_array(phba, vports);
8700 
8701 	/* Remove FC host and then SCSI host with the physical port */
8702 	fc_remove_host(shost);
8703 	scsi_remove_host(shost);
8704 	lpfc_cleanup(vport);
8705 
8706 	/*
8707 	 * Bring down the SLI Layer. This step disable all interrupts,
8708 	 * clears the rings, discards all mailbox commands, and resets
8709 	 * the HBA.
8710 	 */
8711 
8712 	/* HBA interrupt will be disabled after this call */
8713 	lpfc_sli_hba_down(phba);
8714 	/* Stop kthread signal shall trigger work_done one more time */
8715 	kthread_stop(phba->worker_thread);
8716 	/* Final cleanup of txcmplq and reset the HBA */
8717 	lpfc_sli_brdrestart(phba);
8718 
8719 	kfree(phba->vpi_bmask);
8720 	kfree(phba->vpi_ids);
8721 
8722 	lpfc_stop_hba_timers(phba);
8723 	spin_lock_irq(&phba->hbalock);
8724 	list_del_init(&vport->listentry);
8725 	spin_unlock_irq(&phba->hbalock);
8726 
8727 	lpfc_debugfs_terminate(vport);
8728 
8729 	/* Disable SR-IOV if enabled */
8730 	if (phba->cfg_sriov_nr_virtfn)
8731 		pci_disable_sriov(pdev);
8732 
8733 	/* Disable interrupt */
8734 	lpfc_sli_disable_intr(phba);
8735 
8736 	pci_set_drvdata(pdev, NULL);
8737 	scsi_host_put(shost);
8738 
8739 	/*
8740 	 * Call scsi_free before mem_free since scsi bufs are released to their
8741 	 * corresponding pools here.
8742 	 */
8743 	lpfc_scsi_free(phba);
8744 	lpfc_mem_free_all(phba);
8745 
8746 	dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
8747 			  phba->hbqslimp.virt, phba->hbqslimp.phys);
8748 
8749 	/* Free resources associated with SLI2 interface */
8750 	dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
8751 			  phba->slim2p.virt, phba->slim2p.phys);
8752 
8753 	/* unmap adapter SLIM and Control Registers */
8754 	iounmap(phba->ctrl_regs_memmap_p);
8755 	iounmap(phba->slim_memmap_p);
8756 
8757 	lpfc_hba_free(phba);
8758 
8759 	pci_release_selected_regions(pdev, bars);
8760 	pci_disable_device(pdev);
8761 }
8762 
8763 /**
8764  * lpfc_pci_suspend_one_s3 - PCI func to suspend SLI-3 device for power mgmnt
8765  * @pdev: pointer to PCI device
8766  * @msg: power management message
8767  *
8768  * This routine is to be called from the kernel's PCI subsystem to support
8769  * system Power Management (PM) to device with SLI-3 interface spec. When
8770  * PM invokes this method, it quiesces the device by stopping the driver's
8771  * worker thread for the device, turning off device's interrupt and DMA,
8772  * and bring the device offline. Note that as the driver implements the
8773  * minimum PM requirements to a power-aware driver's PM support for the
8774  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
8775  * to the suspend() method call will be treated as SUSPEND and the driver will
8776  * fully reinitialize its device during resume() method call, the driver will
8777  * set device to PCI_D3hot state in PCI config space instead of setting it
8778  * according to the @msg provided by the PM.
8779  *
8780  * Return code
8781  * 	0 - driver suspended the device
8782  * 	Error otherwise
8783  **/
8784 static int
lpfc_pci_suspend_one_s3(struct pci_dev * pdev,pm_message_t msg)8785 lpfc_pci_suspend_one_s3(struct pci_dev *pdev, pm_message_t msg)
8786 {
8787 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
8788 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8789 
8790 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8791 			"0473 PCI device Power Management suspend.\n");
8792 
8793 	/* Bring down the device */
8794 	lpfc_offline_prep(phba);
8795 	lpfc_offline(phba);
8796 	kthread_stop(phba->worker_thread);
8797 
8798 	/* Disable interrupt from device */
8799 	lpfc_sli_disable_intr(phba);
8800 
8801 	/* Save device state to PCI config space */
8802 	pci_save_state(pdev);
8803 	pci_set_power_state(pdev, PCI_D3hot);
8804 
8805 	return 0;
8806 }
8807 
8808 /**
8809  * lpfc_pci_resume_one_s3 - PCI func to resume SLI-3 device for power mgmnt
8810  * @pdev: pointer to PCI device
8811  *
8812  * This routine is to be called from the kernel's PCI subsystem to support
8813  * system Power Management (PM) to device with SLI-3 interface spec. When PM
8814  * invokes this method, it restores the device's PCI config space state and
8815  * fully reinitializes the device and brings it online. Note that as the
8816  * driver implements the minimum PM requirements to a power-aware driver's
8817  * PM for suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE,
8818  * FREEZE) to the suspend() method call will be treated as SUSPEND and the
8819  * driver will fully reinitialize its device during resume() method call,
8820  * the device will be set to PCI_D0 directly in PCI config space before
8821  * restoring the state.
8822  *
8823  * Return code
8824  * 	0 - driver suspended the device
8825  * 	Error otherwise
8826  **/
8827 static int
lpfc_pci_resume_one_s3(struct pci_dev * pdev)8828 lpfc_pci_resume_one_s3(struct pci_dev *pdev)
8829 {
8830 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
8831 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8832 	uint32_t intr_mode;
8833 	int error;
8834 
8835 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8836 			"0452 PCI device Power Management resume.\n");
8837 
8838 	/* Restore device state from PCI config space */
8839 	pci_set_power_state(pdev, PCI_D0);
8840 	pci_restore_state(pdev);
8841 
8842 	/*
8843 	 * As the new kernel behavior of pci_restore_state() API call clears
8844 	 * device saved_state flag, need to save the restored state again.
8845 	 */
8846 	pci_save_state(pdev);
8847 
8848 	if (pdev->is_busmaster)
8849 		pci_set_master(pdev);
8850 
8851 	/* Startup the kernel thread for this host adapter. */
8852 	phba->worker_thread = kthread_run(lpfc_do_work, phba,
8853 					"lpfc_worker_%d", phba->brd_no);
8854 	if (IS_ERR(phba->worker_thread)) {
8855 		error = PTR_ERR(phba->worker_thread);
8856 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8857 				"0434 PM resume failed to start worker "
8858 				"thread: error=x%x.\n", error);
8859 		return error;
8860 	}
8861 
8862 	/* Configure and enable interrupt */
8863 	intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
8864 	if (intr_mode == LPFC_INTR_ERROR) {
8865 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8866 				"0430 PM resume Failed to enable interrupt\n");
8867 		return -EIO;
8868 	} else
8869 		phba->intr_mode = intr_mode;
8870 
8871 	/* Restart HBA and bring it online */
8872 	lpfc_sli_brdrestart(phba);
8873 	lpfc_online(phba);
8874 
8875 	/* Log the current active interrupt mode */
8876 	lpfc_log_intr_mode(phba, phba->intr_mode);
8877 
8878 	return 0;
8879 }
8880 
8881 /**
8882  * lpfc_sli_prep_dev_for_recover - Prepare SLI3 device for pci slot recover
8883  * @phba: pointer to lpfc hba data structure.
8884  *
8885  * This routine is called to prepare the SLI3 device for PCI slot recover. It
8886  * aborts all the outstanding SCSI I/Os to the pci device.
8887  **/
8888 static void
lpfc_sli_prep_dev_for_recover(struct lpfc_hba * phba)8889 lpfc_sli_prep_dev_for_recover(struct lpfc_hba *phba)
8890 {
8891 	struct lpfc_sli *psli = &phba->sli;
8892 	struct lpfc_sli_ring  *pring;
8893 
8894 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8895 			"2723 PCI channel I/O abort preparing for recovery\n");
8896 
8897 	/*
8898 	 * There may be errored I/Os through HBA, abort all I/Os on txcmplq
8899 	 * and let the SCSI mid-layer to retry them to recover.
8900 	 */
8901 	pring = &psli->ring[psli->fcp_ring];
8902 	lpfc_sli_abort_iocb_ring(phba, pring);
8903 }
8904 
8905 /**
8906  * lpfc_sli_prep_dev_for_reset - Prepare SLI3 device for pci slot reset
8907  * @phba: pointer to lpfc hba data structure.
8908  *
8909  * This routine is called to prepare the SLI3 device for PCI slot reset. It
8910  * disables the device interrupt and pci device, and aborts the internal FCP
8911  * pending I/Os.
8912  **/
8913 static void
lpfc_sli_prep_dev_for_reset(struct lpfc_hba * phba)8914 lpfc_sli_prep_dev_for_reset(struct lpfc_hba *phba)
8915 {
8916 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8917 			"2710 PCI channel disable preparing for reset\n");
8918 
8919 	/* Block any management I/Os to the device */
8920 	lpfc_block_mgmt_io(phba);
8921 
8922 	/* Block all SCSI devices' I/Os on the host */
8923 	lpfc_scsi_dev_block(phba);
8924 
8925 	/* stop all timers */
8926 	lpfc_stop_hba_timers(phba);
8927 
8928 	/* Disable interrupt and pci device */
8929 	lpfc_sli_disable_intr(phba);
8930 	pci_disable_device(phba->pcidev);
8931 
8932 	/* Flush all driver's outstanding SCSI I/Os as we are to reset */
8933 	lpfc_sli_flush_fcp_rings(phba);
8934 }
8935 
8936 /**
8937  * lpfc_sli_prep_dev_for_perm_failure - Prepare SLI3 dev for pci slot disable
8938  * @phba: pointer to lpfc hba data structure.
8939  *
8940  * This routine is called to prepare the SLI3 device for PCI slot permanently
8941  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
8942  * pending I/Os.
8943  **/
8944 static void
lpfc_sli_prep_dev_for_perm_failure(struct lpfc_hba * phba)8945 lpfc_sli_prep_dev_for_perm_failure(struct lpfc_hba *phba)
8946 {
8947 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8948 			"2711 PCI channel permanent disable for failure\n");
8949 	/* Block all SCSI devices' I/Os on the host */
8950 	lpfc_scsi_dev_block(phba);
8951 
8952 	/* stop all timers */
8953 	lpfc_stop_hba_timers(phba);
8954 
8955 	/* Clean up all driver's outstanding SCSI I/Os */
8956 	lpfc_sli_flush_fcp_rings(phba);
8957 }
8958 
8959 /**
8960  * lpfc_io_error_detected_s3 - Method for handling SLI-3 device PCI I/O error
8961  * @pdev: pointer to PCI device.
8962  * @state: the current PCI connection state.
8963  *
8964  * This routine is called from the PCI subsystem for I/O error handling to
8965  * device with SLI-3 interface spec. This function is called by the PCI
8966  * subsystem after a PCI bus error affecting this device has been detected.
8967  * When this function is invoked, it will need to stop all the I/Os and
8968  * interrupt(s) to the device. Once that is done, it will return
8969  * PCI_ERS_RESULT_NEED_RESET for the PCI subsystem to perform proper recovery
8970  * as desired.
8971  *
8972  * Return codes
8973  * 	PCI_ERS_RESULT_CAN_RECOVER - can be recovered with reset_link
8974  * 	PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
8975  * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered
8976  **/
8977 static pci_ers_result_t
lpfc_io_error_detected_s3(struct pci_dev * pdev,pci_channel_state_t state)8978 lpfc_io_error_detected_s3(struct pci_dev *pdev, pci_channel_state_t state)
8979 {
8980 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
8981 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8982 
8983 	switch (state) {
8984 	case pci_channel_io_normal:
8985 		/* Non-fatal error, prepare for recovery */
8986 		lpfc_sli_prep_dev_for_recover(phba);
8987 		return PCI_ERS_RESULT_CAN_RECOVER;
8988 	case pci_channel_io_frozen:
8989 		/* Fatal error, prepare for slot reset */
8990 		lpfc_sli_prep_dev_for_reset(phba);
8991 		return PCI_ERS_RESULT_NEED_RESET;
8992 	case pci_channel_io_perm_failure:
8993 		/* Permanent failure, prepare for device down */
8994 		lpfc_sli_prep_dev_for_perm_failure(phba);
8995 		return PCI_ERS_RESULT_DISCONNECT;
8996 	default:
8997 		/* Unknown state, prepare and request slot reset */
8998 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8999 				"0472 Unknown PCI error state: x%x\n", state);
9000 		lpfc_sli_prep_dev_for_reset(phba);
9001 		return PCI_ERS_RESULT_NEED_RESET;
9002 	}
9003 }
9004 
9005 /**
9006  * lpfc_io_slot_reset_s3 - Method for restarting PCI SLI-3 device from scratch.
9007  * @pdev: pointer to PCI device.
9008  *
9009  * This routine is called from the PCI subsystem for error handling to
9010  * device with SLI-3 interface spec. This is called after PCI bus has been
9011  * reset to restart the PCI card from scratch, as if from a cold-boot.
9012  * During the PCI subsystem error recovery, after driver returns
9013  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
9014  * recovery and then call this routine before calling the .resume method
9015  * to recover the device. This function will initialize the HBA device,
9016  * enable the interrupt, but it will just put the HBA to offline state
9017  * without passing any I/O traffic.
9018  *
9019  * Return codes
9020  * 	PCI_ERS_RESULT_RECOVERED - the device has been recovered
9021  * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered
9022  */
9023 static pci_ers_result_t
lpfc_io_slot_reset_s3(struct pci_dev * pdev)9024 lpfc_io_slot_reset_s3(struct pci_dev *pdev)
9025 {
9026 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
9027 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9028 	struct lpfc_sli *psli = &phba->sli;
9029 	uint32_t intr_mode;
9030 
9031 	dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
9032 	if (pci_enable_device_mem(pdev)) {
9033 		printk(KERN_ERR "lpfc: Cannot re-enable "
9034 			"PCI device after reset.\n");
9035 		return PCI_ERS_RESULT_DISCONNECT;
9036 	}
9037 
9038 	pci_restore_state(pdev);
9039 
9040 	/*
9041 	 * As the new kernel behavior of pci_restore_state() API call clears
9042 	 * device saved_state flag, need to save the restored state again.
9043 	 */
9044 	pci_save_state(pdev);
9045 
9046 	if (pdev->is_busmaster)
9047 		pci_set_master(pdev);
9048 
9049 	spin_lock_irq(&phba->hbalock);
9050 	psli->sli_flag &= ~LPFC_SLI_ACTIVE;
9051 	spin_unlock_irq(&phba->hbalock);
9052 
9053 	/* Configure and enable interrupt */
9054 	intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
9055 	if (intr_mode == LPFC_INTR_ERROR) {
9056 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9057 				"0427 Cannot re-enable interrupt after "
9058 				"slot reset.\n");
9059 		return PCI_ERS_RESULT_DISCONNECT;
9060 	} else
9061 		phba->intr_mode = intr_mode;
9062 
9063 	/* Take device offline, it will perform cleanup */
9064 	lpfc_offline_prep(phba);
9065 	lpfc_offline(phba);
9066 	lpfc_sli_brdrestart(phba);
9067 
9068 	/* Log the current active interrupt mode */
9069 	lpfc_log_intr_mode(phba, phba->intr_mode);
9070 
9071 	return PCI_ERS_RESULT_RECOVERED;
9072 }
9073 
9074 /**
9075  * lpfc_io_resume_s3 - Method for resuming PCI I/O operation on SLI-3 device.
9076  * @pdev: pointer to PCI device
9077  *
9078  * This routine is called from the PCI subsystem for error handling to device
9079  * with SLI-3 interface spec. It is called when kernel error recovery tells
9080  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
9081  * error recovery. After this call, traffic can start to flow from this device
9082  * again.
9083  */
9084 static void
lpfc_io_resume_s3(struct pci_dev * pdev)9085 lpfc_io_resume_s3(struct pci_dev *pdev)
9086 {
9087 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
9088 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9089 
9090 	/* Bring device online, it will be no-op for non-fatal error resume */
9091 	lpfc_online(phba);
9092 
9093 	/* Clean up Advanced Error Reporting (AER) if needed */
9094 	if (phba->hba_flag & HBA_AER_ENABLED)
9095 		pci_cleanup_aer_uncorrect_error_status(pdev);
9096 }
9097 
9098 /**
9099  * lpfc_sli4_get_els_iocb_cnt - Calculate the # of ELS IOCBs to reserve
9100  * @phba: pointer to lpfc hba data structure.
9101  *
9102  * returns the number of ELS/CT IOCBs to reserve
9103  **/
9104 int
lpfc_sli4_get_els_iocb_cnt(struct lpfc_hba * phba)9105 lpfc_sli4_get_els_iocb_cnt(struct lpfc_hba *phba)
9106 {
9107 	int max_xri = phba->sli4_hba.max_cfg_param.max_xri;
9108 
9109 	if (phba->sli_rev == LPFC_SLI_REV4) {
9110 		if (max_xri <= 100)
9111 			return 10;
9112 		else if (max_xri <= 256)
9113 			return 25;
9114 		else if (max_xri <= 512)
9115 			return 50;
9116 		else if (max_xri <= 1024)
9117 			return 100;
9118 		else
9119 			return 150;
9120 	} else
9121 		return 0;
9122 }
9123 
9124 /**
9125  * lpfc_write_firmware - attempt to write a firmware image to the port
9126  * @phba: pointer to lpfc hba data structure.
9127  * @fw: pointer to firmware image returned from request_firmware.
9128  *
9129  * returns the number of bytes written if write is successful.
9130  * returns a negative error value if there were errors.
9131  * returns 0 if firmware matches currently active firmware on port.
9132  **/
9133 int
lpfc_write_firmware(struct lpfc_hba * phba,const struct firmware * fw)9134 lpfc_write_firmware(struct lpfc_hba *phba, const struct firmware *fw)
9135 {
9136 	char fwrev[FW_REV_STR_SIZE];
9137 	struct lpfc_grp_hdr *image = (struct lpfc_grp_hdr *)fw->data;
9138 	struct list_head dma_buffer_list;
9139 	int i, rc = 0;
9140 	struct lpfc_dmabuf *dmabuf, *next;
9141 	uint32_t offset = 0, temp_offset = 0;
9142 
9143 	INIT_LIST_HEAD(&dma_buffer_list);
9144 	if ((be32_to_cpu(image->magic_number) != LPFC_GROUP_OJECT_MAGIC_NUM) ||
9145 	    (bf_get_be32(lpfc_grp_hdr_file_type, image) !=
9146 	     LPFC_FILE_TYPE_GROUP) ||
9147 	    (bf_get_be32(lpfc_grp_hdr_id, image) != LPFC_FILE_ID_GROUP) ||
9148 	    (be32_to_cpu(image->size) != fw->size)) {
9149 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9150 				"3022 Invalid FW image found. "
9151 				"Magic:%x Type:%x ID:%x\n",
9152 				be32_to_cpu(image->magic_number),
9153 				bf_get_be32(lpfc_grp_hdr_file_type, image),
9154 				bf_get_be32(lpfc_grp_hdr_id, image));
9155 		return -EINVAL;
9156 	}
9157 	lpfc_decode_firmware_rev(phba, fwrev, 1);
9158 	if (strncmp(fwrev, image->revision, strnlen(image->revision, 16))) {
9159 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9160 				"3023 Updating Firmware. Current Version:%s "
9161 				"New Version:%s\n",
9162 				fwrev, image->revision);
9163 		for (i = 0; i < LPFC_MBX_WR_CONFIG_MAX_BDE; i++) {
9164 			dmabuf = kzalloc(sizeof(struct lpfc_dmabuf),
9165 					 GFP_KERNEL);
9166 			if (!dmabuf) {
9167 				rc = -ENOMEM;
9168 				goto out;
9169 			}
9170 			dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
9171 							  SLI4_PAGE_SIZE,
9172 							  &dmabuf->phys,
9173 							  GFP_KERNEL);
9174 			if (!dmabuf->virt) {
9175 				kfree(dmabuf);
9176 				rc = -ENOMEM;
9177 				goto out;
9178 			}
9179 			list_add_tail(&dmabuf->list, &dma_buffer_list);
9180 		}
9181 		while (offset < fw->size) {
9182 			temp_offset = offset;
9183 			list_for_each_entry(dmabuf, &dma_buffer_list, list) {
9184 				if (temp_offset + SLI4_PAGE_SIZE > fw->size) {
9185 					memcpy(dmabuf->virt,
9186 					       fw->data + temp_offset,
9187 					       fw->size - temp_offset);
9188 					temp_offset = fw->size;
9189 					break;
9190 				}
9191 				memcpy(dmabuf->virt, fw->data + temp_offset,
9192 				       SLI4_PAGE_SIZE);
9193 				temp_offset += SLI4_PAGE_SIZE;
9194 			}
9195 			rc = lpfc_wr_object(phba, &dma_buffer_list,
9196 				    (fw->size - offset), &offset);
9197 			if (rc) {
9198 				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9199 						"3024 Firmware update failed. "
9200 						"%d\n", rc);
9201 				goto out;
9202 			}
9203 		}
9204 		rc = offset;
9205 	}
9206 out:
9207 	list_for_each_entry_safe(dmabuf, next, &dma_buffer_list, list) {
9208 		list_del(&dmabuf->list);
9209 		dma_free_coherent(&phba->pcidev->dev, SLI4_PAGE_SIZE,
9210 				  dmabuf->virt, dmabuf->phys);
9211 		kfree(dmabuf);
9212 	}
9213 	return rc;
9214 }
9215 
9216 /**
9217  * lpfc_pci_probe_one_s4 - PCI probe func to reg SLI-4 device to PCI subsys
9218  * @pdev: pointer to PCI device
9219  * @pid: pointer to PCI device identifier
9220  *
9221  * This routine is called from the kernel's PCI subsystem to device with
9222  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
9223  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
9224  * information of the device and driver to see if the driver state that it
9225  * can support this kind of device. If the match is successful, the driver
9226  * core invokes this routine. If this routine determines it can claim the HBA,
9227  * it does all the initialization that it needs to do to handle the HBA
9228  * properly.
9229  *
9230  * Return code
9231  * 	0 - driver can claim the device
9232  * 	negative value - driver can not claim the device
9233  **/
9234 static int __devinit
lpfc_pci_probe_one_s4(struct pci_dev * pdev,const struct pci_device_id * pid)9235 lpfc_pci_probe_one_s4(struct pci_dev *pdev, const struct pci_device_id *pid)
9236 {
9237 	struct lpfc_hba   *phba;
9238 	struct lpfc_vport *vport = NULL;
9239 	struct Scsi_Host  *shost = NULL;
9240 	int error;
9241 	uint32_t cfg_mode, intr_mode;
9242 	int mcnt;
9243 	int adjusted_fcp_eq_count;
9244 	const struct firmware *fw;
9245 	uint8_t file_name[16];
9246 
9247 	/* Allocate memory for HBA structure */
9248 	phba = lpfc_hba_alloc(pdev);
9249 	if (!phba)
9250 		return -ENOMEM;
9251 
9252 	/* Perform generic PCI device enabling operation */
9253 	error = lpfc_enable_pci_dev(phba);
9254 	if (error)
9255 		goto out_free_phba;
9256 
9257 	/* Set up SLI API function jump table for PCI-device group-1 HBAs */
9258 	error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_OC);
9259 	if (error)
9260 		goto out_disable_pci_dev;
9261 
9262 	/* Set up SLI-4 specific device PCI memory space */
9263 	error = lpfc_sli4_pci_mem_setup(phba);
9264 	if (error) {
9265 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9266 				"1410 Failed to set up pci memory space.\n");
9267 		goto out_disable_pci_dev;
9268 	}
9269 
9270 	/* Set up phase-1 common device driver resources */
9271 	error = lpfc_setup_driver_resource_phase1(phba);
9272 	if (error) {
9273 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9274 				"1411 Failed to set up driver resource.\n");
9275 		goto out_unset_pci_mem_s4;
9276 	}
9277 
9278 	/* Set up SLI-4 Specific device driver resources */
9279 	error = lpfc_sli4_driver_resource_setup(phba);
9280 	if (error) {
9281 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9282 				"1412 Failed to set up driver resource.\n");
9283 		goto out_unset_pci_mem_s4;
9284 	}
9285 
9286 	/* Initialize and populate the iocb list per host */
9287 
9288 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9289 			"2821 initialize iocb list %d.\n",
9290 			phba->cfg_iocb_cnt*1024);
9291 	error = lpfc_init_iocb_list(phba, phba->cfg_iocb_cnt*1024);
9292 
9293 	if (error) {
9294 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9295 				"1413 Failed to initialize iocb list.\n");
9296 		goto out_unset_driver_resource_s4;
9297 	}
9298 
9299 	INIT_LIST_HEAD(&phba->active_rrq_list);
9300 	INIT_LIST_HEAD(&phba->fcf.fcf_pri_list);
9301 
9302 	/* Set up common device driver resources */
9303 	error = lpfc_setup_driver_resource_phase2(phba);
9304 	if (error) {
9305 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9306 				"1414 Failed to set up driver resource.\n");
9307 		goto out_free_iocb_list;
9308 	}
9309 
9310 	/* Get the default values for Model Name and Description */
9311 	lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
9312 
9313 	/* Create SCSI host to the physical port */
9314 	error = lpfc_create_shost(phba);
9315 	if (error) {
9316 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9317 				"1415 Failed to create scsi host.\n");
9318 		goto out_unset_driver_resource;
9319 	}
9320 
9321 	/* Configure sysfs attributes */
9322 	vport = phba->pport;
9323 	error = lpfc_alloc_sysfs_attr(vport);
9324 	if (error) {
9325 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9326 				"1416 Failed to allocate sysfs attr\n");
9327 		goto out_destroy_shost;
9328 	}
9329 
9330 	shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
9331 	/* Now, trying to enable interrupt and bring up the device */
9332 	cfg_mode = phba->cfg_use_msi;
9333 	while (true) {
9334 		/* Put device to a known state before enabling interrupt */
9335 		lpfc_stop_port(phba);
9336 		/* Configure and enable interrupt */
9337 		intr_mode = lpfc_sli4_enable_intr(phba, cfg_mode);
9338 		if (intr_mode == LPFC_INTR_ERROR) {
9339 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9340 					"0426 Failed to enable interrupt.\n");
9341 			error = -ENODEV;
9342 			goto out_free_sysfs_attr;
9343 		}
9344 		/* Default to single EQ for non-MSI-X */
9345 		if (phba->intr_type != MSIX)
9346 			adjusted_fcp_eq_count = 0;
9347 		else if (phba->sli4_hba.msix_vec_nr <
9348 					phba->cfg_fcp_eq_count + 1)
9349 			adjusted_fcp_eq_count = phba->sli4_hba.msix_vec_nr - 1;
9350 		else
9351 			adjusted_fcp_eq_count = phba->cfg_fcp_eq_count;
9352 		phba->cfg_fcp_eq_count = adjusted_fcp_eq_count;
9353 		/* Set up SLI-4 HBA */
9354 		if (lpfc_sli4_hba_setup(phba)) {
9355 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9356 					"1421 Failed to set up hba\n");
9357 			error = -ENODEV;
9358 			goto out_disable_intr;
9359 		}
9360 
9361 		/* Send NOP mbx cmds for non-INTx mode active interrupt test */
9362 		if (intr_mode != 0)
9363 			mcnt = lpfc_sli4_send_nop_mbox_cmds(phba,
9364 							    LPFC_ACT_INTR_CNT);
9365 
9366 		/* Check active interrupts received only for MSI/MSI-X */
9367 		if (intr_mode == 0 ||
9368 		    phba->sli.slistat.sli_intr >= LPFC_ACT_INTR_CNT) {
9369 			/* Log the current active interrupt mode */
9370 			phba->intr_mode = intr_mode;
9371 			lpfc_log_intr_mode(phba, intr_mode);
9372 			break;
9373 		}
9374 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9375 				"0451 Configure interrupt mode (%d) "
9376 				"failed active interrupt test.\n",
9377 				intr_mode);
9378 		/* Unset the previous SLI-4 HBA setup. */
9379 		/*
9380 		 * TODO:  Is this operation compatible with IF TYPE 2
9381 		 * devices?  All port state is deleted and cleared.
9382 		 */
9383 		lpfc_sli4_unset_hba(phba);
9384 		/* Try next level of interrupt mode */
9385 		cfg_mode = --intr_mode;
9386 	}
9387 
9388 	/* Perform post initialization setup */
9389 	lpfc_post_init_setup(phba);
9390 
9391 	/* check for firmware upgrade or downgrade (if_type 2 only) */
9392 	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
9393 	    LPFC_SLI_INTF_IF_TYPE_2) {
9394 		snprintf(file_name, 16, "%s.grp", phba->ModelName);
9395 		error = request_firmware(&fw, file_name, &phba->pcidev->dev);
9396 		if (!error) {
9397 			lpfc_write_firmware(phba, fw);
9398 			release_firmware(fw);
9399 		}
9400 	}
9401 
9402 	/* Check if there are static vports to be created. */
9403 	lpfc_create_static_vport(phba);
9404 	return 0;
9405 
9406 out_disable_intr:
9407 	lpfc_sli4_disable_intr(phba);
9408 out_free_sysfs_attr:
9409 	lpfc_free_sysfs_attr(vport);
9410 out_destroy_shost:
9411 	lpfc_destroy_shost(phba);
9412 out_unset_driver_resource:
9413 	lpfc_unset_driver_resource_phase2(phba);
9414 out_free_iocb_list:
9415 	lpfc_free_iocb_list(phba);
9416 out_unset_driver_resource_s4:
9417 	lpfc_sli4_driver_resource_unset(phba);
9418 out_unset_pci_mem_s4:
9419 	lpfc_sli4_pci_mem_unset(phba);
9420 out_disable_pci_dev:
9421 	lpfc_disable_pci_dev(phba);
9422 	if (shost)
9423 		scsi_host_put(shost);
9424 out_free_phba:
9425 	lpfc_hba_free(phba);
9426 	return error;
9427 }
9428 
9429 /**
9430  * lpfc_pci_remove_one_s4 - PCI func to unreg SLI-4 device from PCI subsystem
9431  * @pdev: pointer to PCI device
9432  *
9433  * This routine is called from the kernel's PCI subsystem to device with
9434  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
9435  * removed from PCI bus, it performs all the necessary cleanup for the HBA
9436  * device to be removed from the PCI subsystem properly.
9437  **/
9438 static void __devexit
lpfc_pci_remove_one_s4(struct pci_dev * pdev)9439 lpfc_pci_remove_one_s4(struct pci_dev *pdev)
9440 {
9441 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
9442 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
9443 	struct lpfc_vport **vports;
9444 	struct lpfc_hba *phba = vport->phba;
9445 	int i;
9446 
9447 	/* Mark the device unloading flag */
9448 	spin_lock_irq(&phba->hbalock);
9449 	vport->load_flag |= FC_UNLOADING;
9450 	spin_unlock_irq(&phba->hbalock);
9451 
9452 	/* Free the HBA sysfs attributes */
9453 	lpfc_free_sysfs_attr(vport);
9454 
9455 	/* Release all the vports against this physical port */
9456 	vports = lpfc_create_vport_work_array(phba);
9457 	if (vports != NULL)
9458 		for (i = 1; i <= phba->max_vports && vports[i] != NULL; i++)
9459 			fc_vport_terminate(vports[i]->fc_vport);
9460 	lpfc_destroy_vport_work_array(phba, vports);
9461 
9462 	/* Remove FC host and then SCSI host with the physical port */
9463 	fc_remove_host(shost);
9464 	scsi_remove_host(shost);
9465 
9466 	/* Perform cleanup on the physical port */
9467 	lpfc_cleanup(vport);
9468 
9469 	/*
9470 	 * Bring down the SLI Layer. This step disables all interrupts,
9471 	 * clears the rings, discards all mailbox commands, and resets
9472 	 * the HBA FCoE function.
9473 	 */
9474 	lpfc_debugfs_terminate(vport);
9475 	lpfc_sli4_hba_unset(phba);
9476 
9477 	spin_lock_irq(&phba->hbalock);
9478 	list_del_init(&vport->listentry);
9479 	spin_unlock_irq(&phba->hbalock);
9480 
9481 	/* Perform scsi free before driver resource_unset since scsi
9482 	 * buffers are released to their corresponding pools here.
9483 	 */
9484 	lpfc_scsi_free(phba);
9485 	lpfc_sli4_driver_resource_unset(phba);
9486 
9487 	/* Unmap adapter Control and Doorbell registers */
9488 	lpfc_sli4_pci_mem_unset(phba);
9489 
9490 	/* Release PCI resources and disable device's PCI function */
9491 	scsi_host_put(shost);
9492 	lpfc_disable_pci_dev(phba);
9493 
9494 	/* Finally, free the driver's device data structure */
9495 	lpfc_hba_free(phba);
9496 
9497 	return;
9498 }
9499 
9500 /**
9501  * lpfc_pci_suspend_one_s4 - PCI func to suspend SLI-4 device for power mgmnt
9502  * @pdev: pointer to PCI device
9503  * @msg: power management message
9504  *
9505  * This routine is called from the kernel's PCI subsystem to support system
9506  * Power Management (PM) to device with SLI-4 interface spec. When PM invokes
9507  * this method, it quiesces the device by stopping the driver's worker
9508  * thread for the device, turning off device's interrupt and DMA, and bring
9509  * the device offline. Note that as the driver implements the minimum PM
9510  * requirements to a power-aware driver's PM support for suspend/resume -- all
9511  * the possible PM messages (SUSPEND, HIBERNATE, FREEZE) to the suspend()
9512  * method call will be treated as SUSPEND and the driver will fully
9513  * reinitialize its device during resume() method call, the driver will set
9514  * device to PCI_D3hot state in PCI config space instead of setting it
9515  * according to the @msg provided by the PM.
9516  *
9517  * Return code
9518  * 	0 - driver suspended the device
9519  * 	Error otherwise
9520  **/
9521 static int
lpfc_pci_suspend_one_s4(struct pci_dev * pdev,pm_message_t msg)9522 lpfc_pci_suspend_one_s4(struct pci_dev *pdev, pm_message_t msg)
9523 {
9524 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
9525 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9526 
9527 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9528 			"2843 PCI device Power Management suspend.\n");
9529 
9530 	/* Bring down the device */
9531 	lpfc_offline_prep(phba);
9532 	lpfc_offline(phba);
9533 	kthread_stop(phba->worker_thread);
9534 
9535 	/* Disable interrupt from device */
9536 	lpfc_sli4_disable_intr(phba);
9537 	lpfc_sli4_queue_destroy(phba);
9538 
9539 	/* Save device state to PCI config space */
9540 	pci_save_state(pdev);
9541 	pci_set_power_state(pdev, PCI_D3hot);
9542 
9543 	return 0;
9544 }
9545 
9546 /**
9547  * lpfc_pci_resume_one_s4 - PCI func to resume SLI-4 device for power mgmnt
9548  * @pdev: pointer to PCI device
9549  *
9550  * This routine is called from the kernel's PCI subsystem to support system
9551  * Power Management (PM) to device with SLI-4 interface spac. When PM invokes
9552  * this method, it restores the device's PCI config space state and fully
9553  * reinitializes the device and brings it online. Note that as the driver
9554  * implements the minimum PM requirements to a power-aware driver's PM for
9555  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
9556  * to the suspend() method call will be treated as SUSPEND and the driver
9557  * will fully reinitialize its device during resume() method call, the device
9558  * will be set to PCI_D0 directly in PCI config space before restoring the
9559  * state.
9560  *
9561  * Return code
9562  * 	0 - driver suspended the device
9563  * 	Error otherwise
9564  **/
9565 static int
lpfc_pci_resume_one_s4(struct pci_dev * pdev)9566 lpfc_pci_resume_one_s4(struct pci_dev *pdev)
9567 {
9568 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
9569 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9570 	uint32_t intr_mode;
9571 	int error;
9572 
9573 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9574 			"0292 PCI device Power Management resume.\n");
9575 
9576 	/* Restore device state from PCI config space */
9577 	pci_set_power_state(pdev, PCI_D0);
9578 	pci_restore_state(pdev);
9579 
9580 	/*
9581 	 * As the new kernel behavior of pci_restore_state() API call clears
9582 	 * device saved_state flag, need to save the restored state again.
9583 	 */
9584 	pci_save_state(pdev);
9585 
9586 	if (pdev->is_busmaster)
9587 		pci_set_master(pdev);
9588 
9589 	 /* Startup the kernel thread for this host adapter. */
9590 	phba->worker_thread = kthread_run(lpfc_do_work, phba,
9591 					"lpfc_worker_%d", phba->brd_no);
9592 	if (IS_ERR(phba->worker_thread)) {
9593 		error = PTR_ERR(phba->worker_thread);
9594 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9595 				"0293 PM resume failed to start worker "
9596 				"thread: error=x%x.\n", error);
9597 		return error;
9598 	}
9599 
9600 	/* Configure and enable interrupt */
9601 	intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
9602 	if (intr_mode == LPFC_INTR_ERROR) {
9603 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9604 				"0294 PM resume Failed to enable interrupt\n");
9605 		return -EIO;
9606 	} else
9607 		phba->intr_mode = intr_mode;
9608 
9609 	/* Restart HBA and bring it online */
9610 	lpfc_sli_brdrestart(phba);
9611 	lpfc_online(phba);
9612 
9613 	/* Log the current active interrupt mode */
9614 	lpfc_log_intr_mode(phba, phba->intr_mode);
9615 
9616 	return 0;
9617 }
9618 
9619 /**
9620  * lpfc_sli4_prep_dev_for_recover - Prepare SLI4 device for pci slot recover
9621  * @phba: pointer to lpfc hba data structure.
9622  *
9623  * This routine is called to prepare the SLI4 device for PCI slot recover. It
9624  * aborts all the outstanding SCSI I/Os to the pci device.
9625  **/
9626 static void
lpfc_sli4_prep_dev_for_recover(struct lpfc_hba * phba)9627 lpfc_sli4_prep_dev_for_recover(struct lpfc_hba *phba)
9628 {
9629 	struct lpfc_sli *psli = &phba->sli;
9630 	struct lpfc_sli_ring  *pring;
9631 
9632 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9633 			"2828 PCI channel I/O abort preparing for recovery\n");
9634 	/*
9635 	 * There may be errored I/Os through HBA, abort all I/Os on txcmplq
9636 	 * and let the SCSI mid-layer to retry them to recover.
9637 	 */
9638 	pring = &psli->ring[psli->fcp_ring];
9639 	lpfc_sli_abort_iocb_ring(phba, pring);
9640 }
9641 
9642 /**
9643  * lpfc_sli4_prep_dev_for_reset - Prepare SLI4 device for pci slot reset
9644  * @phba: pointer to lpfc hba data structure.
9645  *
9646  * This routine is called to prepare the SLI4 device for PCI slot reset. It
9647  * disables the device interrupt and pci device, and aborts the internal FCP
9648  * pending I/Os.
9649  **/
9650 static void
lpfc_sli4_prep_dev_for_reset(struct lpfc_hba * phba)9651 lpfc_sli4_prep_dev_for_reset(struct lpfc_hba *phba)
9652 {
9653 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9654 			"2826 PCI channel disable preparing for reset\n");
9655 
9656 	/* Block any management I/Os to the device */
9657 	lpfc_block_mgmt_io(phba);
9658 
9659 	/* Block all SCSI devices' I/Os on the host */
9660 	lpfc_scsi_dev_block(phba);
9661 
9662 	/* stop all timers */
9663 	lpfc_stop_hba_timers(phba);
9664 
9665 	/* Disable interrupt and pci device */
9666 	lpfc_sli4_disable_intr(phba);
9667 	lpfc_sli4_queue_destroy(phba);
9668 	pci_disable_device(phba->pcidev);
9669 
9670 	/* Flush all driver's outstanding SCSI I/Os as we are to reset */
9671 	lpfc_sli_flush_fcp_rings(phba);
9672 }
9673 
9674 /**
9675  * lpfc_sli4_prep_dev_for_perm_failure - Prepare SLI4 dev for pci slot disable
9676  * @phba: pointer to lpfc hba data structure.
9677  *
9678  * This routine is called to prepare the SLI4 device for PCI slot permanently
9679  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
9680  * pending I/Os.
9681  **/
9682 static void
lpfc_sli4_prep_dev_for_perm_failure(struct lpfc_hba * phba)9683 lpfc_sli4_prep_dev_for_perm_failure(struct lpfc_hba *phba)
9684 {
9685 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9686 			"2827 PCI channel permanent disable for failure\n");
9687 
9688 	/* Block all SCSI devices' I/Os on the host */
9689 	lpfc_scsi_dev_block(phba);
9690 
9691 	/* stop all timers */
9692 	lpfc_stop_hba_timers(phba);
9693 
9694 	/* Clean up all driver's outstanding SCSI I/Os */
9695 	lpfc_sli_flush_fcp_rings(phba);
9696 }
9697 
9698 /**
9699  * lpfc_io_error_detected_s4 - Method for handling PCI I/O error to SLI-4 device
9700  * @pdev: pointer to PCI device.
9701  * @state: the current PCI connection state.
9702  *
9703  * This routine is called from the PCI subsystem for error handling to device
9704  * with SLI-4 interface spec. This function is called by the PCI subsystem
9705  * after a PCI bus error affecting this device has been detected. When this
9706  * function is invoked, it will need to stop all the I/Os and interrupt(s)
9707  * to the device. Once that is done, it will return PCI_ERS_RESULT_NEED_RESET
9708  * for the PCI subsystem to perform proper recovery as desired.
9709  *
9710  * Return codes
9711  * 	PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
9712  * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered
9713  **/
9714 static pci_ers_result_t
lpfc_io_error_detected_s4(struct pci_dev * pdev,pci_channel_state_t state)9715 lpfc_io_error_detected_s4(struct pci_dev *pdev, pci_channel_state_t state)
9716 {
9717 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
9718 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9719 
9720 	switch (state) {
9721 	case pci_channel_io_normal:
9722 		/* Non-fatal error, prepare for recovery */
9723 		lpfc_sli4_prep_dev_for_recover(phba);
9724 		return PCI_ERS_RESULT_CAN_RECOVER;
9725 	case pci_channel_io_frozen:
9726 		/* Fatal error, prepare for slot reset */
9727 		lpfc_sli4_prep_dev_for_reset(phba);
9728 		return PCI_ERS_RESULT_NEED_RESET;
9729 	case pci_channel_io_perm_failure:
9730 		/* Permanent failure, prepare for device down */
9731 		lpfc_sli4_prep_dev_for_perm_failure(phba);
9732 		return PCI_ERS_RESULT_DISCONNECT;
9733 	default:
9734 		/* Unknown state, prepare and request slot reset */
9735 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9736 				"2825 Unknown PCI error state: x%x\n", state);
9737 		lpfc_sli4_prep_dev_for_reset(phba);
9738 		return PCI_ERS_RESULT_NEED_RESET;
9739 	}
9740 }
9741 
9742 /**
9743  * lpfc_io_slot_reset_s4 - Method for restart PCI SLI-4 device from scratch
9744  * @pdev: pointer to PCI device.
9745  *
9746  * This routine is called from the PCI subsystem for error handling to device
9747  * with SLI-4 interface spec. It is called after PCI bus has been reset to
9748  * restart the PCI card from scratch, as if from a cold-boot. During the
9749  * PCI subsystem error recovery, after the driver returns
9750  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
9751  * recovery and then call this routine before calling the .resume method to
9752  * recover the device. This function will initialize the HBA device, enable
9753  * the interrupt, but it will just put the HBA to offline state without
9754  * passing any I/O traffic.
9755  *
9756  * Return codes
9757  * 	PCI_ERS_RESULT_RECOVERED - the device has been recovered
9758  * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered
9759  */
9760 static pci_ers_result_t
lpfc_io_slot_reset_s4(struct pci_dev * pdev)9761 lpfc_io_slot_reset_s4(struct pci_dev *pdev)
9762 {
9763 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
9764 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9765 	struct lpfc_sli *psli = &phba->sli;
9766 	uint32_t intr_mode;
9767 
9768 	dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
9769 	if (pci_enable_device_mem(pdev)) {
9770 		printk(KERN_ERR "lpfc: Cannot re-enable "
9771 			"PCI device after reset.\n");
9772 		return PCI_ERS_RESULT_DISCONNECT;
9773 	}
9774 
9775 	pci_restore_state(pdev);
9776 
9777 	/*
9778 	 * As the new kernel behavior of pci_restore_state() API call clears
9779 	 * device saved_state flag, need to save the restored state again.
9780 	 */
9781 	pci_save_state(pdev);
9782 
9783 	if (pdev->is_busmaster)
9784 		pci_set_master(pdev);
9785 
9786 	spin_lock_irq(&phba->hbalock);
9787 	psli->sli_flag &= ~LPFC_SLI_ACTIVE;
9788 	spin_unlock_irq(&phba->hbalock);
9789 
9790 	/* Configure and enable interrupt */
9791 	intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
9792 	if (intr_mode == LPFC_INTR_ERROR) {
9793 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9794 				"2824 Cannot re-enable interrupt after "
9795 				"slot reset.\n");
9796 		return PCI_ERS_RESULT_DISCONNECT;
9797 	} else
9798 		phba->intr_mode = intr_mode;
9799 
9800 	/* Log the current active interrupt mode */
9801 	lpfc_log_intr_mode(phba, phba->intr_mode);
9802 
9803 	return PCI_ERS_RESULT_RECOVERED;
9804 }
9805 
9806 /**
9807  * lpfc_io_resume_s4 - Method for resuming PCI I/O operation to SLI-4 device
9808  * @pdev: pointer to PCI device
9809  *
9810  * This routine is called from the PCI subsystem for error handling to device
9811  * with SLI-4 interface spec. It is called when kernel error recovery tells
9812  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
9813  * error recovery. After this call, traffic can start to flow from this device
9814  * again.
9815  **/
9816 static void
lpfc_io_resume_s4(struct pci_dev * pdev)9817 lpfc_io_resume_s4(struct pci_dev *pdev)
9818 {
9819 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
9820 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9821 
9822 	/*
9823 	 * In case of slot reset, as function reset is performed through
9824 	 * mailbox command which needs DMA to be enabled, this operation
9825 	 * has to be moved to the io resume phase. Taking device offline
9826 	 * will perform the necessary cleanup.
9827 	 */
9828 	if (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)) {
9829 		/* Perform device reset */
9830 		lpfc_offline_prep(phba);
9831 		lpfc_offline(phba);
9832 		lpfc_sli_brdrestart(phba);
9833 		/* Bring the device back online */
9834 		lpfc_online(phba);
9835 	}
9836 
9837 	/* Clean up Advanced Error Reporting (AER) if needed */
9838 	if (phba->hba_flag & HBA_AER_ENABLED)
9839 		pci_cleanup_aer_uncorrect_error_status(pdev);
9840 }
9841 
9842 /**
9843  * lpfc_pci_probe_one - lpfc PCI probe func to reg dev to PCI subsystem
9844  * @pdev: pointer to PCI device
9845  * @pid: pointer to PCI device identifier
9846  *
9847  * This routine is to be registered to the kernel's PCI subsystem. When an
9848  * Emulex HBA device is presented on PCI bus, the kernel PCI subsystem looks
9849  * at PCI device-specific information of the device and driver to see if the
9850  * driver state that it can support this kind of device. If the match is
9851  * successful, the driver core invokes this routine. This routine dispatches
9852  * the action to the proper SLI-3 or SLI-4 device probing routine, which will
9853  * do all the initialization that it needs to do to handle the HBA device
9854  * properly.
9855  *
9856  * Return code
9857  * 	0 - driver can claim the device
9858  * 	negative value - driver can not claim the device
9859  **/
9860 static int __devinit
lpfc_pci_probe_one(struct pci_dev * pdev,const struct pci_device_id * pid)9861 lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
9862 {
9863 	int rc;
9864 	struct lpfc_sli_intf intf;
9865 
9866 	if (pci_read_config_dword(pdev, LPFC_SLI_INTF, &intf.word0))
9867 		return -ENODEV;
9868 
9869 	if ((bf_get(lpfc_sli_intf_valid, &intf) == LPFC_SLI_INTF_VALID) &&
9870 	    (bf_get(lpfc_sli_intf_slirev, &intf) == LPFC_SLI_INTF_REV_SLI4))
9871 		rc = lpfc_pci_probe_one_s4(pdev, pid);
9872 	else
9873 		rc = lpfc_pci_probe_one_s3(pdev, pid);
9874 
9875 	return rc;
9876 }
9877 
9878 /**
9879  * lpfc_pci_remove_one - lpfc PCI func to unreg dev from PCI subsystem
9880  * @pdev: pointer to PCI device
9881  *
9882  * This routine is to be registered to the kernel's PCI subsystem. When an
9883  * Emulex HBA is removed from PCI bus, the driver core invokes this routine.
9884  * This routine dispatches the action to the proper SLI-3 or SLI-4 device
9885  * remove routine, which will perform all the necessary cleanup for the
9886  * device to be removed from the PCI subsystem properly.
9887  **/
9888 static void __devexit
lpfc_pci_remove_one(struct pci_dev * pdev)9889 lpfc_pci_remove_one(struct pci_dev *pdev)
9890 {
9891 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
9892 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9893 
9894 	switch (phba->pci_dev_grp) {
9895 	case LPFC_PCI_DEV_LP:
9896 		lpfc_pci_remove_one_s3(pdev);
9897 		break;
9898 	case LPFC_PCI_DEV_OC:
9899 		lpfc_pci_remove_one_s4(pdev);
9900 		break;
9901 	default:
9902 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9903 				"1424 Invalid PCI device group: 0x%x\n",
9904 				phba->pci_dev_grp);
9905 		break;
9906 	}
9907 	return;
9908 }
9909 
9910 /**
9911  * lpfc_pci_suspend_one - lpfc PCI func to suspend dev for power management
9912  * @pdev: pointer to PCI device
9913  * @msg: power management message
9914  *
9915  * This routine is to be registered to the kernel's PCI subsystem to support
9916  * system Power Management (PM). When PM invokes this method, it dispatches
9917  * the action to the proper SLI-3 or SLI-4 device suspend routine, which will
9918  * suspend the device.
9919  *
9920  * Return code
9921  * 	0 - driver suspended the device
9922  * 	Error otherwise
9923  **/
9924 static int
lpfc_pci_suspend_one(struct pci_dev * pdev,pm_message_t msg)9925 lpfc_pci_suspend_one(struct pci_dev *pdev, pm_message_t msg)
9926 {
9927 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
9928 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9929 	int rc = -ENODEV;
9930 
9931 	switch (phba->pci_dev_grp) {
9932 	case LPFC_PCI_DEV_LP:
9933 		rc = lpfc_pci_suspend_one_s3(pdev, msg);
9934 		break;
9935 	case LPFC_PCI_DEV_OC:
9936 		rc = lpfc_pci_suspend_one_s4(pdev, msg);
9937 		break;
9938 	default:
9939 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9940 				"1425 Invalid PCI device group: 0x%x\n",
9941 				phba->pci_dev_grp);
9942 		break;
9943 	}
9944 	return rc;
9945 }
9946 
9947 /**
9948  * lpfc_pci_resume_one - lpfc PCI func to resume dev for power management
9949  * @pdev: pointer to PCI device
9950  *
9951  * This routine is to be registered to the kernel's PCI subsystem to support
9952  * system Power Management (PM). When PM invokes this method, it dispatches
9953  * the action to the proper SLI-3 or SLI-4 device resume routine, which will
9954  * resume the device.
9955  *
9956  * Return code
9957  * 	0 - driver suspended the device
9958  * 	Error otherwise
9959  **/
9960 static int
lpfc_pci_resume_one(struct pci_dev * pdev)9961 lpfc_pci_resume_one(struct pci_dev *pdev)
9962 {
9963 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
9964 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9965 	int rc = -ENODEV;
9966 
9967 	switch (phba->pci_dev_grp) {
9968 	case LPFC_PCI_DEV_LP:
9969 		rc = lpfc_pci_resume_one_s3(pdev);
9970 		break;
9971 	case LPFC_PCI_DEV_OC:
9972 		rc = lpfc_pci_resume_one_s4(pdev);
9973 		break;
9974 	default:
9975 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9976 				"1426 Invalid PCI device group: 0x%x\n",
9977 				phba->pci_dev_grp);
9978 		break;
9979 	}
9980 	return rc;
9981 }
9982 
9983 /**
9984  * lpfc_io_error_detected - lpfc method for handling PCI I/O error
9985  * @pdev: pointer to PCI device.
9986  * @state: the current PCI connection state.
9987  *
9988  * This routine is registered to the PCI subsystem for error handling. This
9989  * function is called by the PCI subsystem after a PCI bus error affecting
9990  * this device has been detected. When this routine is invoked, it dispatches
9991  * the action to the proper SLI-3 or SLI-4 device error detected handling
9992  * routine, which will perform the proper error detected operation.
9993  *
9994  * Return codes
9995  * 	PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
9996  * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered
9997  **/
9998 static pci_ers_result_t
lpfc_io_error_detected(struct pci_dev * pdev,pci_channel_state_t state)9999 lpfc_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
10000 {
10001 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
10002 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
10003 	pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
10004 
10005 	switch (phba->pci_dev_grp) {
10006 	case LPFC_PCI_DEV_LP:
10007 		rc = lpfc_io_error_detected_s3(pdev, state);
10008 		break;
10009 	case LPFC_PCI_DEV_OC:
10010 		rc = lpfc_io_error_detected_s4(pdev, state);
10011 		break;
10012 	default:
10013 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10014 				"1427 Invalid PCI device group: 0x%x\n",
10015 				phba->pci_dev_grp);
10016 		break;
10017 	}
10018 	return rc;
10019 }
10020 
10021 /**
10022  * lpfc_io_slot_reset - lpfc method for restart PCI dev from scratch
10023  * @pdev: pointer to PCI device.
10024  *
10025  * This routine is registered to the PCI subsystem for error handling. This
10026  * function is called after PCI bus has been reset to restart the PCI card
10027  * from scratch, as if from a cold-boot. When this routine is invoked, it
10028  * dispatches the action to the proper SLI-3 or SLI-4 device reset handling
10029  * routine, which will perform the proper device reset.
10030  *
10031  * Return codes
10032  * 	PCI_ERS_RESULT_RECOVERED - the device has been recovered
10033  * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered
10034  **/
10035 static pci_ers_result_t
lpfc_io_slot_reset(struct pci_dev * pdev)10036 lpfc_io_slot_reset(struct pci_dev *pdev)
10037 {
10038 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
10039 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
10040 	pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
10041 
10042 	switch (phba->pci_dev_grp) {
10043 	case LPFC_PCI_DEV_LP:
10044 		rc = lpfc_io_slot_reset_s3(pdev);
10045 		break;
10046 	case LPFC_PCI_DEV_OC:
10047 		rc = lpfc_io_slot_reset_s4(pdev);
10048 		break;
10049 	default:
10050 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10051 				"1428 Invalid PCI device group: 0x%x\n",
10052 				phba->pci_dev_grp);
10053 		break;
10054 	}
10055 	return rc;
10056 }
10057 
10058 /**
10059  * lpfc_io_resume - lpfc method for resuming PCI I/O operation
10060  * @pdev: pointer to PCI device
10061  *
10062  * This routine is registered to the PCI subsystem for error handling. It
10063  * is called when kernel error recovery tells the lpfc driver that it is
10064  * OK to resume normal PCI operation after PCI bus error recovery. When
10065  * this routine is invoked, it dispatches the action to the proper SLI-3
10066  * or SLI-4 device io_resume routine, which will resume the device operation.
10067  **/
10068 static void
lpfc_io_resume(struct pci_dev * pdev)10069 lpfc_io_resume(struct pci_dev *pdev)
10070 {
10071 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
10072 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
10073 
10074 	switch (phba->pci_dev_grp) {
10075 	case LPFC_PCI_DEV_LP:
10076 		lpfc_io_resume_s3(pdev);
10077 		break;
10078 	case LPFC_PCI_DEV_OC:
10079 		lpfc_io_resume_s4(pdev);
10080 		break;
10081 	default:
10082 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10083 				"1429 Invalid PCI device group: 0x%x\n",
10084 				phba->pci_dev_grp);
10085 		break;
10086 	}
10087 	return;
10088 }
10089 
10090 /**
10091  * lpfc_mgmt_open - method called when 'lpfcmgmt' is opened from userspace
10092  * @inode: pointer to the inode representing the lpfcmgmt device
10093  * @filep: pointer to the file representing the open lpfcmgmt device
10094  *
10095  * This routine puts a reference count on the lpfc module whenever the
10096  * character device is opened
10097  **/
10098 static int
lpfc_mgmt_open(struct inode * inode,struct file * filep)10099 lpfc_mgmt_open(struct inode *inode, struct file *filep)
10100 {
10101 	try_module_get(THIS_MODULE);
10102 	return 0;
10103 }
10104 
10105 /**
10106  * lpfc_mgmt_release - method called when 'lpfcmgmt' is closed in userspace
10107  * @inode: pointer to the inode representing the lpfcmgmt device
10108  * @filep: pointer to the file representing the open lpfcmgmt device
10109  *
10110  * This routine removes a reference count from the lpfc module when the
10111  * character device is closed
10112  **/
10113 static int
lpfc_mgmt_release(struct inode * inode,struct file * filep)10114 lpfc_mgmt_release(struct inode *inode, struct file *filep)
10115 {
10116 	module_put(THIS_MODULE);
10117 	return 0;
10118 }
10119 
10120 static struct pci_device_id lpfc_id_table[] = {
10121 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_VIPER,
10122 		PCI_ANY_ID, PCI_ANY_ID, },
10123 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_FIREFLY,
10124 		PCI_ANY_ID, PCI_ANY_ID, },
10125 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_THOR,
10126 		PCI_ANY_ID, PCI_ANY_ID, },
10127 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PEGASUS,
10128 		PCI_ANY_ID, PCI_ANY_ID, },
10129 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_CENTAUR,
10130 		PCI_ANY_ID, PCI_ANY_ID, },
10131 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_DRAGONFLY,
10132 		PCI_ANY_ID, PCI_ANY_ID, },
10133 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SUPERFLY,
10134 		PCI_ANY_ID, PCI_ANY_ID, },
10135 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_RFLY,
10136 		PCI_ANY_ID, PCI_ANY_ID, },
10137 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PFLY,
10138 		PCI_ANY_ID, PCI_ANY_ID, },
10139 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE,
10140 		PCI_ANY_ID, PCI_ANY_ID, },
10141 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE_SCSP,
10142 		PCI_ANY_ID, PCI_ANY_ID, },
10143 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE_DCSP,
10144 		PCI_ANY_ID, PCI_ANY_ID, },
10145 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS,
10146 		PCI_ANY_ID, PCI_ANY_ID, },
10147 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS_SCSP,
10148 		PCI_ANY_ID, PCI_ANY_ID, },
10149 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS_DCSP,
10150 		PCI_ANY_ID, PCI_ANY_ID, },
10151 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BMID,
10152 		PCI_ANY_ID, PCI_ANY_ID, },
10153 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BSMB,
10154 		PCI_ANY_ID, PCI_ANY_ID, },
10155 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR,
10156 		PCI_ANY_ID, PCI_ANY_ID, },
10157 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HORNET,
10158 		PCI_ANY_ID, PCI_ANY_ID, },
10159 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_SCSP,
10160 		PCI_ANY_ID, PCI_ANY_ID, },
10161 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_DCSP,
10162 		PCI_ANY_ID, PCI_ANY_ID, },
10163 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZMID,
10164 		PCI_ANY_ID, PCI_ANY_ID, },
10165 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZSMB,
10166 		PCI_ANY_ID, PCI_ANY_ID, },
10167 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_TFLY,
10168 		PCI_ANY_ID, PCI_ANY_ID, },
10169 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP101,
10170 		PCI_ANY_ID, PCI_ANY_ID, },
10171 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP10000S,
10172 		PCI_ANY_ID, PCI_ANY_ID, },
10173 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP11000S,
10174 		PCI_ANY_ID, PCI_ANY_ID, },
10175 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LPE11000S,
10176 		PCI_ANY_ID, PCI_ANY_ID, },
10177 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT,
10178 		PCI_ANY_ID, PCI_ANY_ID, },
10179 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_MID,
10180 		PCI_ANY_ID, PCI_ANY_ID, },
10181 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_SMB,
10182 		PCI_ANY_ID, PCI_ANY_ID, },
10183 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_DCSP,
10184 		PCI_ANY_ID, PCI_ANY_ID, },
10185 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_SCSP,
10186 		PCI_ANY_ID, PCI_ANY_ID, },
10187 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_S,
10188 		PCI_ANY_ID, PCI_ANY_ID, },
10189 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_VF,
10190 		PCI_ANY_ID, PCI_ANY_ID, },
10191 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_PF,
10192 		PCI_ANY_ID, PCI_ANY_ID, },
10193 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_S,
10194 		PCI_ANY_ID, PCI_ANY_ID, },
10195 	{PCI_VENDOR_ID_SERVERENGINE, PCI_DEVICE_ID_TIGERSHARK,
10196 		PCI_ANY_ID, PCI_ANY_ID, },
10197 	{PCI_VENDOR_ID_SERVERENGINE, PCI_DEVICE_ID_TOMCAT,
10198 		PCI_ANY_ID, PCI_ANY_ID, },
10199 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_FALCON,
10200 		PCI_ANY_ID, PCI_ANY_ID, },
10201 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BALIUS,
10202 		PCI_ANY_ID, PCI_ANY_ID, },
10203 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FC,
10204 		PCI_ANY_ID, PCI_ANY_ID, },
10205 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FCOE,
10206 		PCI_ANY_ID, PCI_ANY_ID, },
10207 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FC_VF,
10208 		PCI_ANY_ID, PCI_ANY_ID, },
10209 	{PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FCOE_VF,
10210 		PCI_ANY_ID, PCI_ANY_ID, },
10211 	{ 0 }
10212 };
10213 
10214 MODULE_DEVICE_TABLE(pci, lpfc_id_table);
10215 
10216 static struct pci_error_handlers lpfc_err_handler = {
10217 	.error_detected = lpfc_io_error_detected,
10218 	.slot_reset = lpfc_io_slot_reset,
10219 	.resume = lpfc_io_resume,
10220 };
10221 
10222 static struct pci_driver lpfc_driver = {
10223 	.name		= LPFC_DRIVER_NAME,
10224 	.id_table	= lpfc_id_table,
10225 	.probe		= lpfc_pci_probe_one,
10226 	.remove		= __devexit_p(lpfc_pci_remove_one),
10227 	.suspend        = lpfc_pci_suspend_one,
10228 	.resume		= lpfc_pci_resume_one,
10229 	.err_handler    = &lpfc_err_handler,
10230 };
10231 
10232 static const struct file_operations lpfc_mgmt_fop = {
10233 	.open = lpfc_mgmt_open,
10234 	.release = lpfc_mgmt_release,
10235 };
10236 
10237 static struct miscdevice lpfc_mgmt_dev = {
10238 	.minor = MISC_DYNAMIC_MINOR,
10239 	.name = "lpfcmgmt",
10240 	.fops = &lpfc_mgmt_fop,
10241 };
10242 
10243 /**
10244  * lpfc_init - lpfc module initialization routine
10245  *
10246  * This routine is to be invoked when the lpfc module is loaded into the
10247  * kernel. The special kernel macro module_init() is used to indicate the
10248  * role of this routine to the kernel as lpfc module entry point.
10249  *
10250  * Return codes
10251  *   0 - successful
10252  *   -ENOMEM - FC attach transport failed
10253  *   all others - failed
10254  */
10255 static int __init
lpfc_init(void)10256 lpfc_init(void)
10257 {
10258 	int error = 0;
10259 
10260 	printk(LPFC_MODULE_DESC "\n");
10261 	printk(LPFC_COPYRIGHT "\n");
10262 
10263 	error = misc_register(&lpfc_mgmt_dev);
10264 	if (error)
10265 		printk(KERN_ERR "Could not register lpfcmgmt device, "
10266 			"misc_register returned with status %d", error);
10267 
10268 	if (lpfc_enable_npiv) {
10269 		lpfc_transport_functions.vport_create = lpfc_vport_create;
10270 		lpfc_transport_functions.vport_delete = lpfc_vport_delete;
10271 	}
10272 	lpfc_transport_template =
10273 				fc_attach_transport(&lpfc_transport_functions);
10274 	if (lpfc_transport_template == NULL)
10275 		return -ENOMEM;
10276 	if (lpfc_enable_npiv) {
10277 		lpfc_vport_transport_template =
10278 			fc_attach_transport(&lpfc_vport_transport_functions);
10279 		if (lpfc_vport_transport_template == NULL) {
10280 			fc_release_transport(lpfc_transport_template);
10281 			return -ENOMEM;
10282 		}
10283 	}
10284 	error = pci_register_driver(&lpfc_driver);
10285 	if (error) {
10286 		fc_release_transport(lpfc_transport_template);
10287 		if (lpfc_enable_npiv)
10288 			fc_release_transport(lpfc_vport_transport_template);
10289 	}
10290 
10291 	return error;
10292 }
10293 
10294 /**
10295  * lpfc_exit - lpfc module removal routine
10296  *
10297  * This routine is invoked when the lpfc module is removed from the kernel.
10298  * The special kernel macro module_exit() is used to indicate the role of
10299  * this routine to the kernel as lpfc module exit point.
10300  */
10301 static void __exit
lpfc_exit(void)10302 lpfc_exit(void)
10303 {
10304 	misc_deregister(&lpfc_mgmt_dev);
10305 	pci_unregister_driver(&lpfc_driver);
10306 	fc_release_transport(lpfc_transport_template);
10307 	if (lpfc_enable_npiv)
10308 		fc_release_transport(lpfc_vport_transport_template);
10309 	if (_dump_buf_data) {
10310 		printk(KERN_ERR	"9062 BLKGRD: freeing %lu pages for "
10311 				"_dump_buf_data at 0x%p\n",
10312 				(1L << _dump_buf_data_order), _dump_buf_data);
10313 		free_pages((unsigned long)_dump_buf_data, _dump_buf_data_order);
10314 	}
10315 
10316 	if (_dump_buf_dif) {
10317 		printk(KERN_ERR	"9049 BLKGRD: freeing %lu pages for "
10318 				"_dump_buf_dif at 0x%p\n",
10319 				(1L << _dump_buf_dif_order), _dump_buf_dif);
10320 		free_pages((unsigned long)_dump_buf_dif, _dump_buf_dif_order);
10321 	}
10322 }
10323 
10324 module_init(lpfc_init);
10325 module_exit(lpfc_exit);
10326 MODULE_LICENSE("GPL");
10327 MODULE_DESCRIPTION(LPFC_MODULE_DESC);
10328 MODULE_AUTHOR("Emulex Corporation - tech.support@emulex.com");
10329 MODULE_VERSION("0:" LPFC_DRIVER_VERSION);
10330