drivers/scsi/lpfc/lpfc_debugfs.c

/*******************************************************************
 * This file is part of the Emulex Linux Device Driver for         *
 * Fibre Channel Host Bus Adapters.                                *
 * Copyright (C) 2017 Broadcom. All Rights Reserved. The term      *
 * “Broadcom” refers to Broadcom Limited and/or its subsidiaries.  *
 * Copyright (C) 2007-2015 Emulex.  All rights reserved.           *
 * EMULEX and SLI are trademarks of Emulex.                        *
 * www.broadcom.com                                                *
 *                                                                 *
 * This program is free software; you can redistribute it and/or   *
 * modify it under the terms of version 2 of the GNU General       *
 * Public License as published by the Free Software Foundation.    *
 * This program is distributed in the hope that it will be useful. *
 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
 * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
 * more details, a copy of which can be found in the file COPYING  *
 * included with this package.                                     *
 *******************************************************************/

#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/dma-mapping.h>
#include <linux/idr.h>
#include <linux/interrupt.h>
#include <linux/kthread.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/ctype.h>

#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_fc.h>
#include <scsi/fc/fc_fs.h>

#include <linux/nvme-fc-driver.h>

#include "lpfc_hw4.h"
#include "lpfc_hw.h"
#include "lpfc_sli.h"
#include "lpfc_sli4.h"
#include "lpfc_nl.h"
#include "lpfc_disc.h"
#include "lpfc.h"
#include "lpfc_scsi.h"
#include "lpfc_nvme.h"
#include "lpfc_nvmet.h"
#include "lpfc_logmsg.h"
#include "lpfc_crtn.h"
#include "lpfc_vport.h"
#include "lpfc_version.h"
#include "lpfc_compat.h"
#include "lpfc_debugfs.h"
#include "lpfc_bsg.h"

#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
/*
 * debugfs interface
 *
 * To access this interface the user should:
 * # mount -t debugfs none /sys/kernel/debug
 *
 * The lpfc debugfs directory hierarchy is:
 * /sys/kernel/debug/lpfc/fnX/vportY
 * where X is the lpfc hba function unique_id
 * where Y is the vport VPI on that hba
 *
 * Debugging services available per vport:
 * discovery_trace
 * This is an ACSII readable file that contains a trace of the last
 * lpfc_debugfs_max_disc_trc events that happened on a specific vport.
 * See lpfc_debugfs.h for different categories of  discovery events.
 * To enable the discovery trace, the following module parameters must be set:
 * lpfc_debugfs_enable=1         Turns on lpfc debugfs filesystem support
 * lpfc_debugfs_max_disc_trc=X   Where X is the event trace depth for
 *                               EACH vport. X MUST also be a power of 2.
 * lpfc_debugfs_mask_disc_trc=Y  Where Y is an event mask as defined in
 *                               lpfc_debugfs.h .
 *
 * slow_ring_trace
 * This is an ACSII readable file that contains a trace of the last
 * lpfc_debugfs_max_slow_ring_trc events that happened on a specific HBA.
 * To enable the slow ring trace, the following module parameters must be set:
 * lpfc_debugfs_enable=1         Turns on lpfc debugfs filesystem support
 * lpfc_debugfs_max_slow_ring_trc=X   Where X is the event trace depth for
 *                               the HBA. X MUST also be a power of 2.
 */
static int lpfc_debugfs_enable = 1;
module_param(lpfc_debugfs_enable, int, S_IRUGO);
MODULE_PARM_DESC(lpfc_debugfs_enable, "Enable debugfs services");

/* This MUST be a power of 2 */
static int lpfc_debugfs_max_disc_trc;
module_param(lpfc_debugfs_max_disc_trc, int, S_IRUGO);
MODULE_PARM_DESC(lpfc_debugfs_max_disc_trc,
	"Set debugfs discovery trace depth");

/* This MUST be a power of 2 */
static int lpfc_debugfs_max_slow_ring_trc;
module_param(lpfc_debugfs_max_slow_ring_trc, int, S_IRUGO);
MODULE_PARM_DESC(lpfc_debugfs_max_slow_ring_trc,
	"Set debugfs slow ring trace depth");

/* This MUST be a power of 2 */
static int lpfc_debugfs_max_nvmeio_trc;
module_param(lpfc_debugfs_max_nvmeio_trc, int, 0444);
MODULE_PARM_DESC(lpfc_debugfs_max_nvmeio_trc,
		 "Set debugfs NVME IO trace depth");

static int lpfc_debugfs_mask_disc_trc;
module_param(lpfc_debugfs_mask_disc_trc, int, S_IRUGO);
MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc,
	"Set debugfs discovery trace mask");

#include <linux/debugfs.h>

static atomic_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0);
static unsigned long lpfc_debugfs_start_time = 0L;

/* iDiag */
static struct lpfc_idiag idiag;

/**
 * lpfc_debugfs_disc_trc_data - Dump discovery logging to a buffer
 * @vport: The vport to gather the log info from.
 * @buf: The buffer to dump log into.
 * @size: The maximum amount of data to process.
 *
 * Description:
 * This routine gathers the lpfc discovery debugfs data from the @vport and
 * dumps it to @buf up to @size number of bytes. It will start at the next entry
 * in the log and process the log until the end of the buffer. Then it will
 * gather from the beginning of the log and process until the current entry.
 *
 * Notes:
 * Discovery logging will be disabled while while this routine dumps the log.
 *
 * Return Value:
 * This routine returns the amount of bytes that were dumped into @buf and will
 * not exceed @size.
 **/
static int
lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size)
{
	int i, index, len, enable;
	uint32_t ms;
	struct lpfc_debugfs_trc *dtp;
	char *buffer;

	buffer = kmalloc(LPFC_DEBUG_TRC_ENTRY_SIZE, GFP_KERNEL);
	if (!buffer)
		return 0;

	enable = lpfc_debugfs_enable;
	lpfc_debugfs_enable = 0;

	len = 0;
	index = (atomic_read(&vport->disc_trc_cnt) + 1) &
		(lpfc_debugfs_max_disc_trc - 1);
	for (i = index; i < lpfc_debugfs_max_disc_trc; i++) {
		dtp = vport->disc_trc + i;
		if (!dtp->fmt)
			continue;
		ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
		snprintf(buffer,
			LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
			dtp->seq_cnt, ms, dtp->fmt);
		len +=  snprintf(buf+len, size-len, buffer,
			dtp->data1, dtp->data2, dtp->data3);
	}
	for (i = 0; i < index; i++) {
		dtp = vport->disc_trc + i;
		if (!dtp->fmt)
			continue;
		ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
		snprintf(buffer,
			LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
			dtp->seq_cnt, ms, dtp->fmt);
		len +=  snprintf(buf+len, size-len, buffer,
			dtp->data1, dtp->data2, dtp->data3);
	}

	lpfc_debugfs_enable = enable;
	kfree(buffer);

	return len;
}

/**
 * lpfc_debugfs_slow_ring_trc_data - Dump slow ring logging to a buffer
 * @phba: The HBA to gather the log info from.
 * @buf: The buffer to dump log into.
 * @size: The maximum amount of data to process.
 *
 * Description:
 * This routine gathers the lpfc slow ring debugfs data from the @phba and
 * dumps it to @buf up to @size number of bytes. It will start at the next entry
 * in the log and process the log until the end of the buffer. Then it will
 * gather from the beginning of the log and process until the current entry.
 *
 * Notes:
 * Slow ring logging will be disabled while while this routine dumps the log.
 *
 * Return Value:
 * This routine returns the amount of bytes that were dumped into @buf and will
 * not exceed @size.
 **/
static int
lpfc_debugfs_slow_ring_trc_data(struct lpfc_hba *phba, char *buf, int size)
{
	int i, index, len, enable;
	uint32_t ms;
	struct lpfc_debugfs_trc *dtp;
	char *buffer;

	buffer = kmalloc(LPFC_DEBUG_TRC_ENTRY_SIZE, GFP_KERNEL);
	if (!buffer)
		return 0;

	enable = lpfc_debugfs_enable;
	lpfc_debugfs_enable = 0;

	len = 0;
	index = (atomic_read(&phba->slow_ring_trc_cnt) + 1) &
		(lpfc_debugfs_max_slow_ring_trc - 1);
	for (i = index; i < lpfc_debugfs_max_slow_ring_trc; i++) {
		dtp = phba->slow_ring_trc + i;
		if (!dtp->fmt)
			continue;
		ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
		snprintf(buffer,
			LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
			dtp->seq_cnt, ms, dtp->fmt);
		len +=  snprintf(buf+len, size-len, buffer,
			dtp->data1, dtp->data2, dtp->data3);
	}
	for (i = 0; i < index; i++) {
		dtp = phba->slow_ring_trc + i;
		if (!dtp->fmt)
			continue;
		ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
		snprintf(buffer,
			LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
			dtp->seq_cnt, ms, dtp->fmt);
		len +=  snprintf(buf+len, size-len, buffer,
			dtp->data1, dtp->data2, dtp->data3);
	}

	lpfc_debugfs_enable = enable;
	kfree(buffer);

	return len;
}

static int lpfc_debugfs_last_hbq = -1;

/**
 * lpfc_debugfs_hbqinfo_data - Dump host buffer queue info to a buffer
 * @phba: The HBA to gather host buffer info from.
 * @buf: The buffer to dump log into.
 * @size: The maximum amount of data to process.
 *
 * Description:
 * This routine dumps the host buffer queue info from the @phba to @buf up to
 * @size number of bytes. A header that describes the current hbq state will be
 * dumped to @buf first and then info on each hbq entry will be dumped to @buf
 * until @size bytes have been dumped or all the hbq info has been dumped.
 *
 * Notes:
 * This routine will rotate through each configured HBQ each time called.
 *
 * Return Value:
 * This routine returns the amount of bytes that were dumped into @buf and will
 * not exceed @size.
 **/
static int
lpfc_debugfs_hbqinfo_data(struct lpfc_hba *phba, char *buf, int size)
{
	int len = 0;
	int i, j, found, posted, low;
	uint32_t phys, raw_index, getidx;
	struct lpfc_hbq_init *hip;
	struct hbq_s *hbqs;
	struct lpfc_hbq_entry *hbqe;
	struct lpfc_dmabuf *d_buf;
	struct hbq_dmabuf *hbq_buf;

	if (phba->sli_rev != 3)
		return 0;

	spin_lock_irq(&phba->hbalock);

	/* toggle between multiple hbqs, if any */
	i = lpfc_sli_hbq_count();
	if (i > 1) {
		 lpfc_debugfs_last_hbq++;
		 if (lpfc_debugfs_last_hbq >= i)
			lpfc_debugfs_last_hbq = 0;
	}
	else
		lpfc_debugfs_last_hbq = 0;

	i = lpfc_debugfs_last_hbq;

	len +=  snprintf(buf+len, size-len, "HBQ %d Info\n", i);

	hbqs =  &phba->hbqs[i];
	posted = 0;
	list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list)
		posted++;

	hip =  lpfc_hbq_defs[i];
	len +=  snprintf(buf+len, size-len,
		"idx:%d prof:%d rn:%d bufcnt:%d icnt:%d acnt:%d posted %d\n",
		hip->hbq_index, hip->profile, hip->rn,
		hip->buffer_count, hip->init_count, hip->add_count, posted);

	raw_index = phba->hbq_get[i];
	getidx = le32_to_cpu(raw_index);
	len +=  snprintf(buf+len, size-len,
		"entries:%d bufcnt:%d Put:%d nPut:%d localGet:%d hbaGet:%d\n",
		hbqs->entry_count, hbqs->buffer_count, hbqs->hbqPutIdx,
		hbqs->next_hbqPutIdx, hbqs->local_hbqGetIdx, getidx);

	hbqe = (struct lpfc_hbq_entry *) phba->hbqs[i].hbq_virt;
	for (j=0; j<hbqs->entry_count; j++) {
		len +=  snprintf(buf+len, size-len,
			"%03d: %08x %04x %05x ", j,
			le32_to_cpu(hbqe->bde.addrLow),
			le32_to_cpu(hbqe->bde.tus.w),
			le32_to_cpu(hbqe->buffer_tag));
		i = 0;
		found = 0;

		/* First calculate if slot has an associated posted buffer */
		low = hbqs->hbqPutIdx - posted;
		if (low >= 0) {
			if ((j >= hbqs->hbqPutIdx) || (j < low)) {
				len +=  snprintf(buf+len, size-len, "Unused\n");
				goto skipit;
			}
		}
		else {
			if ((j >= hbqs->hbqPutIdx) &&
				(j < (hbqs->entry_count+low))) {
				len +=  snprintf(buf+len, size-len, "Unused\n");
				goto skipit;
			}
		}

		/* Get the Buffer info for the posted buffer */
		list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list) {
			hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
			phys = ((uint64_t)hbq_buf->dbuf.phys & 0xffffffff);
			if (phys == le32_to_cpu(hbqe->bde.addrLow)) {
				len +=  snprintf(buf+len, size-len,
					"Buf%d: %p %06x\n", i,
					hbq_buf->dbuf.virt, hbq_buf->tag);
				found = 1;
				break;
			}
			i++;
		}
		if (!found) {
			len +=  snprintf(buf+len, size-len, "No DMAinfo?\n");
		}
skipit:
		hbqe++;
		if (len > LPFC_HBQINFO_SIZE - 54)
			break;
	}
	spin_unlock_irq(&phba->hbalock);
	return len;
}

static int lpfc_debugfs_last_hba_slim_off;

/**
 * lpfc_debugfs_dumpHBASlim_data - Dump HBA SLIM info to a buffer
 * @phba: The HBA to gather SLIM info from.
 * @buf: The buffer to dump log into.
 * @size: The maximum amount of data to process.
 *
 * Description:
 * This routine dumps the current contents of HBA SLIM for the HBA associated
 * with @phba to @buf up to @size bytes of data. This is the raw HBA SLIM data.
 *
 * Notes:
 * This routine will only dump up to 1024 bytes of data each time called and
 * should be called multiple times to dump the entire HBA SLIM.
 *
 * Return Value:
 * This routine returns the amount of bytes that were dumped into @buf and will
 * not exceed @size.
 **/
static int
lpfc_debugfs_dumpHBASlim_data(struct lpfc_hba *phba, char *buf, int size)
{
	int len = 0;
	int i, off;
	uint32_t *ptr;
	char *buffer;

	buffer = kmalloc(1024, GFP_KERNEL);
	if (!buffer)
		return 0;

	off = 0;
	spin_lock_irq(&phba->hbalock);

	len +=  snprintf(buf+len, size-len, "HBA SLIM\n");
	lpfc_memcpy_from_slim(buffer,
		phba->MBslimaddr + lpfc_debugfs_last_hba_slim_off, 1024);

	ptr = (uint32_t *)&buffer[0];
	off = lpfc_debugfs_last_hba_slim_off;

	/* Set it up for the next time */
	lpfc_debugfs_last_hba_slim_off += 1024;
	if (lpfc_debugfs_last_hba_slim_off >= 4096)
		lpfc_debugfs_last_hba_slim_off = 0;

	i = 1024;
	while (i > 0) {
		len +=  snprintf(buf+len, size-len,
		"%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
		off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
		*(ptr+5), *(ptr+6), *(ptr+7));
		ptr += 8;
		i -= (8 * sizeof(uint32_t));
		off += (8 * sizeof(uint32_t));
	}

	spin_unlock_irq(&phba->hbalock);
	kfree(buffer);

	return len;
}

/**
 * lpfc_debugfs_dumpHostSlim_data - Dump host SLIM info to a buffer
 * @phba: The HBA to gather Host SLIM info from.
 * @buf: The buffer to dump log into.
 * @size: The maximum amount of data to process.
 *
 * Description:
 * This routine dumps the current contents of host SLIM for the host associated
 * with @phba to @buf up to @size bytes of data. The dump will contain the
 * Mailbox, PCB, Rings, and Registers that are located in host memory.
 *
 * Return Value:
 * This routine returns the amount of bytes that were dumped into @buf and will
 * not exceed @size.
 **/
static int
lpfc_debugfs_dumpHostSlim_data(struct lpfc_hba *phba, char *buf, int size)
{
	int len = 0;
	int i, off;
	uint32_t word0, word1, word2, word3;
	uint32_t *ptr;
	struct lpfc_pgp *pgpp;
	struct lpfc_sli *psli = &phba->sli;
	struct lpfc_sli_ring *pring;

	off = 0;
	spin_lock_irq(&phba->hbalock);

	len +=  snprintf(buf+len, size-len, "SLIM Mailbox\n");
	ptr = (uint32_t *)phba->slim2p.virt;
	i = sizeof(MAILBOX_t);
	while (i > 0) {
		len +=  snprintf(buf+len, size-len,
		"%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
		off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
		*(ptr+5), *(ptr+6), *(ptr+7));
		ptr += 8;
		i -= (8 * sizeof(uint32_t));
		off += (8 * sizeof(uint32_t));
	}

	len +=  snprintf(buf+len, size-len, "SLIM PCB\n");
	ptr = (uint32_t *)phba->pcb;
	i = sizeof(PCB_t);
	while (i > 0) {
		len +=  snprintf(buf+len, size-len,
		"%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
		off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
		*(ptr+5), *(ptr+6), *(ptr+7));
		ptr += 8;
		i -= (8 * sizeof(uint32_t));
		off += (8 * sizeof(uint32_t));
	}

	if (phba->sli_rev <= LPFC_SLI_REV3) {
		for (i = 0; i < 4; i++) {
			pgpp = &phba->port_gp[i];
			pring = &psli->sli3_ring[i];
			len +=  snprintf(buf+len, size-len,
					 "Ring %d: CMD GetInx:%d "
					 "(Max:%d Next:%d "
					 "Local:%d flg:x%x)  "
					 "RSP PutInx:%d Max:%d\n",
					 i, pgpp->cmdGetInx,
					 pring->sli.sli3.numCiocb,
					 pring->sli.sli3.next_cmdidx,
					 pring->sli.sli3.local_getidx,
					 pring->flag, pgpp->rspPutInx,
					 pring->sli.sli3.numRiocb);
		}

		word0 = readl(phba->HAregaddr);
		word1 = readl(phba->CAregaddr);
		word2 = readl(phba->HSregaddr);
		word3 = readl(phba->HCregaddr);
		len +=  snprintf(buf+len, size-len, "HA:%08x CA:%08x HS:%08x "
				 "HC:%08x\n", word0, word1, word2, word3);
	}
	spin_unlock_irq(&phba->hbalock);
	return len;
}

/**
 * lpfc_debugfs_nodelist_data - Dump target node list to a buffer
 * @vport: The vport to gather target node info from.
 * @buf: The buffer to dump log into.
 * @size: The maximum amount of data to process.
 *
 * Description:
 * This routine dumps the current target node list associated with @vport to
 * @buf up to @size bytes of data. Each node entry in the dump will contain a
 * node state, DID, WWPN, WWNN, RPI, flags, type, and other useful fields.
 *
 * Return Value:
 * This routine returns the amount of bytes that were dumped into @buf and will
 * not exceed @size.
 **/
static int
lpfc_debugfs_nodelist_data(struct lpfc_vport *vport, char *buf, int size)
{
	int len = 0;
	int cnt;
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
	struct lpfc_nodelist *ndlp;
	unsigned char *statep;
	struct nvme_fc_local_port *localport;
	struct lpfc_nvmet_tgtport *tgtp;
	struct nvme_fc_remote_port *nrport;

	cnt = (LPFC_NODELIST_SIZE / LPFC_NODELIST_ENTRY_SIZE);

	len += snprintf(buf+len, size-len, "\nFCP Nodelist Entries ...\n");
	spin_lock_irq(shost->host_lock);
	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
		if (!cnt) {
			len +=  snprintf(buf+len, size-len,
				"Missing Nodelist Entries\n");
			break;
		}
		cnt--;
		switch (ndlp->nlp_state) {
		case NLP_STE_UNUSED_NODE:
			statep = "UNUSED";
			break;
		case NLP_STE_PLOGI_ISSUE:
			statep = "PLOGI ";
			break;
		case NLP_STE_ADISC_ISSUE:
			statep = "ADISC ";
			break;
		case NLP_STE_REG_LOGIN_ISSUE:
			statep = "REGLOG";
			break;
		case NLP_STE_PRLI_ISSUE:
			statep = "PRLI  ";
			break;
		case NLP_STE_LOGO_ISSUE:
			statep = "LOGO  ";
			break;
		case NLP_STE_UNMAPPED_NODE:
			statep = "UNMAP ";
			break;
		case NLP_STE_MAPPED_NODE:
			statep = "MAPPED";
			break;
		case NLP_STE_NPR_NODE:
			statep = "NPR   ";
			break;
		default:
			statep = "UNKNOWN";
		}
		len += snprintf(buf+len, size-len, "%s DID:x%06x ",
				statep, ndlp->nlp_DID);
		len += snprintf(buf+len, size-len,
				"WWPN x%llx ",
				wwn_to_u64(ndlp->nlp_portname.u.wwn));
		len += snprintf(buf+len, size-len,
				"WWNN x%llx ",
				wwn_to_u64(ndlp->nlp_nodename.u.wwn));
		if (ndlp->nlp_flag & NLP_RPI_REGISTERED)
			len += snprintf(buf+len, size-len, "RPI:%03d ",
					ndlp->nlp_rpi);
		else
			len += snprintf(buf+len, size-len, "RPI:none ");
		len +=  snprintf(buf+len, size-len, "flag:x%08x ",
			ndlp->nlp_flag);
		if (!ndlp->nlp_type)
			len += snprintf(buf+len, size-len, "UNKNOWN_TYPE ");
		if (ndlp->nlp_type & NLP_FC_NODE)
			len += snprintf(buf+len, size-len, "FC_NODE ");
		if (ndlp->nlp_type & NLP_FABRIC)
			len += snprintf(buf+len, size-len, "FABRIC ");
		if (ndlp->nlp_type & NLP_FCP_TARGET)
			len += snprintf(buf+len, size-len, "FCP_TGT sid:%d ",
				ndlp->nlp_sid);
		if (ndlp->nlp_type & NLP_FCP_INITIATOR)
			len += snprintf(buf+len, size-len, "FCP_INITIATOR ");
		if (ndlp->nlp_type & NLP_NVME_TARGET)
			len += snprintf(buf + len,
					size - len, "NVME_TGT sid:%d ",
					NLP_NO_SID);
		if (ndlp->nlp_type & NLP_NVME_INITIATOR)
			len += snprintf(buf + len,
					size - len, "NVME_INITIATOR ");
		len += snprintf(buf+len, size-len, "usgmap:%x ",
			ndlp->nlp_usg_map);
		len += snprintf(buf+len, size-len, "refcnt:%x",
			kref_read(&ndlp->kref));
		len +=  snprintf(buf+len, size-len, "\n");
	}
	spin_unlock_irq(shost->host_lock);

	if (phba->nvmet_support && phba->targetport && (vport == phba->pport)) {
		tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
		len += snprintf(buf + len, size - len,
				"\nNVME Targetport Entry ...\n");

		/* Port state is only one of two values for now. */
		if (phba->targetport->port_id)
			statep = "REGISTERED";
		else
			statep = "INIT";
		len += snprintf(buf + len, size - len,
				"TGT WWNN x%llx WWPN x%llx State %s\n",
				wwn_to_u64(vport->fc_nodename.u.wwn),
				wwn_to_u64(vport->fc_portname.u.wwn),
				statep);
		len += snprintf(buf + len, size - len,
				"    Targetport DID x%06x\n",
				phba->targetport->port_id);
		goto out_exit;
	}

	len += snprintf(buf + len, size - len,
				"\nNVME Lport/Rport Entries ...\n");

	localport = vport->localport;
	if (!localport)
		goto out_exit;

	spin_lock_irq(shost->host_lock);

	/* Port state is only one of two values for now. */
	if (localport->port_id)
		statep = "ONLINE";
	else
		statep = "UNKNOWN ";

	len += snprintf(buf + len, size - len,
			"Lport DID x%06x PortState %s\n",
			localport->port_id, statep);

	len += snprintf(buf + len, size - len, "\tRport List:\n");
	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
		/* local short-hand pointer. */
		if (!ndlp->nrport)
			continue;

		nrport = ndlp->nrport->remoteport;

		/* Port state is only one of two values for now. */
		switch (nrport->port_state) {
		case FC_OBJSTATE_ONLINE:
			statep = "ONLINE";
			break;
		case FC_OBJSTATE_UNKNOWN:
			statep = "UNKNOWN ";
			break;
		default:
			statep = "UNSUPPORTED";
			break;
		}

		/* Tab in to show lport ownership. */
		len += snprintf(buf + len, size - len,
				"\t%s Port ID:x%06x ",
				statep, nrport->port_id);
		len += snprintf(buf + len, size - len, "WWPN x%llx ",
				nrport->port_name);
		len += snprintf(buf + len, size - len, "WWNN x%llx ",
				nrport->node_name);

		/* An NVME rport can have multiple roles. */
		if (nrport->port_role & FC_PORT_ROLE_NVME_INITIATOR)
			len +=  snprintf(buf + len, size - len,
					 "INITIATOR ");
		if (nrport->port_role & FC_PORT_ROLE_NVME_TARGET)
			len +=  snprintf(buf + len, size - len,
					 "TARGET ");
		if (nrport->port_role & FC_PORT_ROLE_NVME_DISCOVERY)
			len +=  snprintf(buf + len, size - len,
					 "DISCSRVC ");
		if (nrport->port_role & ~(FC_PORT_ROLE_NVME_INITIATOR |
					  FC_PORT_ROLE_NVME_TARGET |
					  FC_PORT_ROLE_NVME_DISCOVERY))
			len +=  snprintf(buf + len, size - len,
					 "UNKNOWN ROLE x%x",
					 nrport->port_role);
		/* Terminate the string. */
		len +=  snprintf(buf + len, size - len, "\n");
	}

	spin_unlock_irq(shost->host_lock);
 out_exit:
	return len;
}

/**
 * lpfc_debugfs_nvmestat_data - Dump target node list to a buffer
 * @vport: The vport to gather target node info from.
 * @buf: The buffer to dump log into.
 * @size: The maximum amount of data to process.
 *
 * Description:
 * This routine dumps the NVME statistics associated with @vport
 *
 * Return Value:
 * This routine returns the amount of bytes that were dumped into @buf and will
 * not exceed @size.
 **/
static int
lpfc_debugfs_nvmestat_data(struct lpfc_vport *vport, char *buf, int size)
{
	struct lpfc_hba   *phba = vport->phba;
	struct lpfc_nvmet_tgtport *tgtp;
	struct lpfc_nvmet_rcv_ctx *ctxp, *next_ctxp;
	uint64_t tot, data1, data2, data3;
	int len = 0;
	int cnt;

	if (phba->nvmet_support) {
		if (!phba->targetport)
			return len;
		tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
		len += snprintf(buf + len, size - len,
				"\nNVME Targetport Statistics\n");

		len += snprintf(buf + len, size - len,
				"LS: Rcv %08x Drop %08x Abort %08x\n",
				atomic_read(&tgtp->rcv_ls_req_in),
				atomic_read(&tgtp->rcv_ls_req_drop),
				atomic_read(&tgtp->xmt_ls_abort));
		if (atomic_read(&tgtp->rcv_ls_req_in) !=
		    atomic_read(&tgtp->rcv_ls_req_out)) {
			len += snprintf(buf + len, size - len,
					"Rcv LS: in %08x != out %08x\n",
					atomic_read(&tgtp->rcv_ls_req_in),
					atomic_read(&tgtp->rcv_ls_req_out));
		}

		len += snprintf(buf + len, size - len,
				"LS: Xmt %08x Drop %08x Cmpl %08x Err %08x\n",
				atomic_read(&tgtp->xmt_ls_rsp),
				atomic_read(&tgtp->xmt_ls_drop),
				atomic_read(&tgtp->xmt_ls_rsp_cmpl),
				atomic_read(&tgtp->xmt_ls_rsp_error));

		len += snprintf(buf + len, size - len,
				"FCP: Rcv %08x Defer %08x Release %08x "
				"Drop %08x\n",
				atomic_read(&tgtp->rcv_fcp_cmd_in),
				atomic_read(&tgtp->rcv_fcp_cmd_defer),
				atomic_read(&tgtp->xmt_fcp_release),
				atomic_read(&tgtp->rcv_fcp_cmd_drop));

		if (atomic_read(&tgtp->rcv_fcp_cmd_in) !=
		    atomic_read(&tgtp->rcv_fcp_cmd_out)) {
			len += snprintf(buf + len, size - len,
					"Rcv FCP: in %08x != out %08x\n",
					atomic_read(&tgtp->rcv_fcp_cmd_in),
					atomic_read(&tgtp->rcv_fcp_cmd_out));
		}

		len += snprintf(buf + len, size - len,
				"FCP Rsp: read %08x readrsp %08x "
				"write %08x rsp %08x\n",
				atomic_read(&tgtp->xmt_fcp_read),
				atomic_read(&tgtp->xmt_fcp_read_rsp),
				atomic_read(&tgtp->xmt_fcp_write),
				atomic_read(&tgtp->xmt_fcp_rsp));

		len += snprintf(buf + len, size - len,
				"FCP Rsp Cmpl: %08x err %08x drop %08x\n",
				atomic_read(&tgtp->xmt_fcp_rsp_cmpl),
				atomic_read(&tgtp->xmt_fcp_rsp_error),
				atomic_read(&tgtp->xmt_fcp_rsp_drop));

		len += snprintf(buf + len, size - len,
				"ABORT: Xmt %08x Cmpl %08x\n",
				atomic_read(&tgtp->xmt_fcp_abort),
				atomic_read(&tgtp->xmt_fcp_abort_cmpl));

		len += snprintf(buf + len, size - len,
				"ABORT: Sol %08x  Usol %08x Err %08x Cmpl %08x",
				atomic_read(&tgtp->xmt_abort_sol),
				atomic_read(&tgtp->xmt_abort_unsol),
				atomic_read(&tgtp->xmt_abort_rsp),
				atomic_read(&tgtp->xmt_abort_rsp_error));

		len +=  snprintf(buf + len, size - len, "\n");

		cnt = 0;
		spin_lock(&phba->sli4_hba.abts_nvme_buf_list_lock);
		list_for_each_entry_safe(ctxp, next_ctxp,
				&phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
				list) {
			cnt++;
		}
		spin_unlock(&phba->sli4_hba.abts_nvme_buf_list_lock);
		if (cnt) {
			len += snprintf(buf + len, size - len,
					"ABORT: %d ctx entries\n", cnt);
			spin_lock(&phba->sli4_hba.abts_nvme_buf_list_lock);
			list_for_each_entry_safe(ctxp, next_ctxp,
				    &phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
				    list) {
				if (len >= (size - LPFC_DEBUG_OUT_LINE_SZ))
					break;
				len += snprintf(buf + len, size - len,
						"Entry: oxid %x state %x "
						"flag %x\n",
						ctxp->oxid, ctxp->state,
						ctxp->flag);
			}
			spin_unlock(&phba->sli4_hba.abts_nvme_buf_list_lock);
		}

		/* Calculate outstanding IOs */
		tot = atomic_read(&tgtp->rcv_fcp_cmd_drop);
		tot += atomic_read(&tgtp->xmt_fcp_release);
		tot = atomic_read(&tgtp->rcv_fcp_cmd_in) - tot;

		len += snprintf(buf + len, size - len,
				"IO_CTX: %08x  WAIT: cur %08x tot %08x\n"
				"CTX Outstanding %08llx\n",
				phba->sli4_hba.nvmet_xri_cnt,
				phba->sli4_hba.nvmet_io_wait_cnt,
				phba->sli4_hba.nvmet_io_wait_total,
				tot);
	} else {
		if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME))
			return len;

		len += snprintf(buf + len, size - len,
				"\nNVME Lport Statistics\n");

		len += snprintf(buf + len, size - len,
				"LS: Xmt %016x Cmpl %016x\n",
				atomic_read(&phba->fc4NvmeLsRequests),
				atomic_read(&phba->fc4NvmeLsCmpls));

		tot = atomic_read(&phba->fc4NvmeIoCmpls);
		data1 = atomic_read(&phba->fc4NvmeInputRequests);
		data2 = atomic_read(&phba->fc4NvmeOutputRequests);
		data3 = atomic_read(&phba->fc4NvmeControlRequests);

		len += snprintf(buf + len, size - len,
				"FCP: Rd %016llx Wr %016llx IO %016llx\n",
				data1, data2, data3);

		len += snprintf(buf + len, size - len,
				"    Cmpl %016llx Outstanding %016llx\n",
				tot, (data1 + data2 + data3) - tot);
	}

	return len;
}


/**
 * lpfc_debugfs_nvmektime_data - Dump target node list to a buffer
 * @vport: The vport to gather target node info from.
 * @buf: The buffer to dump log into.
 * @size: The maximum amount of data to process.
 *
 * Description:
 * This routine dumps the NVME statistics associated with @vport
 *
 * Return Value:
 * This routine returns the amount of bytes that were dumped into @buf and will
 * not exceed @size.
 **/
static int
lpfc_debugfs_nvmektime_data(struct lpfc_vport *vport, char *buf, int size)
{
	struct lpfc_hba   *phba = vport->phba;
	int len = 0;

	if (phba->nvmet_support == 0) {
		/* NVME Initiator */
		len += snprintf(buf + len, PAGE_SIZE - len,
				"ktime %s: Total Samples: %lld\n",
				(phba->ktime_on ?  "Enabled" : "Disabled"),
				phba->ktime_data_samples);
		if (phba->ktime_data_samples == 0)
			return len;

		len += snprintf(
			buf + len, PAGE_SIZE - len,
			"Segment 1: Last NVME Cmd cmpl "
			"done -to- Start of next NVME cnd (in driver)\n");
		len += snprintf(
			buf + len, PAGE_SIZE - len,
			"avg:%08lld min:%08lld max %08lld\n",
			div_u64(phba->ktime_seg1_total,
				phba->ktime_data_samples),
			phba->ktime_seg1_min,
			phba->ktime_seg1_max);
		len += snprintf(
			buf + len, PAGE_SIZE - len,
			"Segment 2: Driver start of NVME cmd "
			"-to- Firmware WQ doorbell\n");
		len += snprintf(
			buf + len, PAGE_SIZE - len,
			"avg:%08lld min:%08lld max %08lld\n",
			div_u64(phba->ktime_seg2_total,
				phba->ktime_data_samples),
			phba->ktime_seg2_min,
			phba->ktime_seg2_max);
		len += snprintf(
			buf + len, PAGE_SIZE - len,
			"Segment 3: Firmware WQ doorbell -to- "
			"MSI-X ISR cmpl\n");
		len += snprintf(
			buf + len, PAGE_SIZE - len,
			"avg:%08lld min:%08lld max %08lld\n",
			div_u64(phba->ktime_seg3_total,
				phba->ktime_data_samples),
			phba->ktime_seg3_min,
			phba->ktime_seg3_max);
		len += snprintf(
			buf + len, PAGE_SIZE - len,
			"Segment 4: MSI-X ISR cmpl -to- "
			"NVME cmpl done\n");
		len += snprintf(
			buf + len, PAGE_SIZE - len,
			"avg:%08lld min:%08lld max %08lld\n",
			div_u64(phba->ktime_seg4_total,
				phba->ktime_data_samples),
			phba->ktime_seg4_min,
			phba->ktime_seg4_max);
		len += snprintf(
			buf + len, PAGE_SIZE - len,
			"Total IO avg time: %08lld\n",
			div_u64(phba->ktime_seg1_total +
			phba->ktime_seg2_total  +
			phba->ktime_seg3_total +
			phba->ktime_seg4_total,
			phba->ktime_data_samples));
		return len;
	}

	/* NVME Target */
	len += snprintf(buf + len, PAGE_SIZE-len,
			"ktime %s: Total Samples: %lld %lld\n",
			(phba->ktime_on ? "Enabled" : "Disabled"),
			phba->ktime_data_samples,
			phba->ktime_status_samples);
	if (phba->ktime_data_samples == 0)
		return len;

	len += snprintf(buf + len, PAGE_SIZE-len,
			"Segment 1: MSI-X ISR Rcv cmd -to- "
			"cmd pass to NVME Layer\n");
	len += snprintf(buf + len, PAGE_SIZE-len,
			"avg:%08lld min:%08lld max %08lld\n",
			div_u64(phba->ktime_seg1_total,
				phba->ktime_data_samples),
			phba->ktime_seg1_min,
			phba->ktime_seg1_max);
	len += snprintf(buf + len, PAGE_SIZE-len,
			"Segment 2: cmd pass to NVME Layer- "
			"-to- Driver rcv cmd OP (action)\n");
	len += snprintf(buf + len, PAGE_SIZE-len,
			"avg:%08lld min:%08lld max %08lld\n",
			div_u64(phba->ktime_seg2_total,
				phba->ktime_data_samples),
			phba->ktime_seg2_min,
			phba->ktime_seg2_max);
	len += snprintf(buf + len, PAGE_SIZE-len,
			"Segment 3: Driver rcv cmd OP -to- "
			"Firmware WQ doorbell: cmd\n");
	len += snprintf(buf + len, PAGE_SIZE-len,
			"avg:%08lld min:%08lld max %08lld\n",
			div_u64(phba->ktime_seg3_total,
				phba->ktime_data_samples),
			phba->ktime_seg3_min,
			phba->ktime_seg3_max);
	len += snprintf(buf + len, PAGE_SIZE-len,
			"Segment 4: Firmware WQ doorbell: cmd "
			"-to- MSI-X ISR for cmd cmpl\n");
	len += snprintf(buf + len, PAGE_SIZE-len,
			"avg:%08lld min:%08lld max %08lld\n",
			div_u64(phba->ktime_seg4_total,
				phba->ktime_data_samples),
			phba->ktime_seg4_min,
			phba->ktime_seg4_max);
	len += snprintf(buf + len, PAGE_SIZE-len,
			"Segment 5: MSI-X ISR for cmd cmpl "
			"-to- NVME layer passed cmd done\n");
	len += snprintf(buf + len, PAGE_SIZE-len,
			"avg:%08lld min:%08lld max %08lld\n",
			div_u64(phba->ktime_seg5_total,
				phba->ktime_data_samples),
			phba->ktime_seg5_min,
			phba->ktime_seg5_max);

	if (phba->ktime_status_samples == 0) {
		len += snprintf(buf + len, PAGE_SIZE-len,
				"Total: cmd received by MSI-X ISR "
				"-to- cmd completed on wire\n");
		len += snprintf(buf + len, PAGE_SIZE-len,
				"avg:%08lld min:%08lld "
				"max %08lld\n",
				div_u64(phba->ktime_seg10_total,
					phba->ktime_data_samples),
				phba->ktime_seg10_min,
				phba->ktime_seg10_max);
		return len;
	}

	len += snprintf(buf + len, PAGE_SIZE-len,
			"Segment 6: NVME layer passed cmd done "
			"-to- Driver rcv rsp status OP\n");
	len += snprintf(buf + len, PAGE_SIZE-len,
			"avg:%08lld min:%08lld max %08lld\n",
			div_u64(phba->ktime_seg6_total,
				phba->ktime_status_samples),
			phba->ktime_seg6_min,
			phba->ktime_seg6_max);
	len += snprintf(buf + len, PAGE_SIZE-len,
			"Segment 7: Driver rcv rsp status OP "
			"-to- Firmware WQ doorbell: status\n");
	len += snprintf(buf + len, PAGE_SIZE-len,
			"avg:%08lld min:%08lld max %08lld\n",
			div_u64(phba->ktime_seg7_total,
				phba->ktime_status_samples),
			phba->ktime_seg7_min,
			phba->ktime_seg7_max);
	len += snprintf(buf + len, PAGE_SIZE-len,
			"Segment 8: Firmware WQ doorbell: status"
			" -to- MSI-X ISR for status cmpl\n");
	len += snprintf(buf + len, PAGE_SIZE-len,
			"avg:%08lld min:%08lld max %08lld\n",
			div_u64(phba->ktime_seg8_total,
				phba->ktime_status_samples),
			phba->ktime_seg8_min,
			phba->ktime_seg8_max);
	len += snprintf(buf + len, PAGE_SIZE-len,
			"Segment 9: MSI-X ISR for status cmpl  "
			"-to- NVME layer passed status done\n");
	len += snprintf(buf + len, PAGE_SIZE-len,
			"avg:%08lld min:%08lld max %08lld\n",
			div_u64(phba->ktime_seg9_total,
				phba->ktime_status_samples),
			phba->ktime_seg9_min,
			phba->ktime_seg9_max);
	len += snprintf(buf + len, PAGE_SIZE-len,
			"Total: cmd received by MSI-X ISR -to- "
			"cmd completed on wire\n");
	len += snprintf(buf + len, PAGE_SIZE-len,
			"avg:%08lld min:%08lld max %08lld\n",
			div_u64(phba->ktime_seg10_total,
				phba->ktime_status_samples),
			phba->ktime_seg10_min,
			phba->ktime_seg10_max);
	return len;
}

/**
 * lpfc_debugfs_nvmeio_trc_data - Dump NVME IO trace list to a buffer
 * @phba: The phba to gather target node info from.
 * @buf: The buffer to dump log into.
 * @size: The maximum amount of data to process.
 *
 * Description:
 * This routine dumps the NVME IO trace associated with @phba
 *
 * Return Value:
 * This routine returns the amount of bytes that were dumped into @buf and will
 * not exceed @size.
 **/
static int
lpfc_debugfs_nvmeio_trc_data(struct lpfc_hba *phba, char *buf, int size)
{
	struct lpfc_debugfs_nvmeio_trc *dtp;
	int i, state, index, skip;
	int len = 0;

	state = phba->nvmeio_trc_on;

	index = (atomic_read(&phba->nvmeio_trc_cnt) + 1) &
		(phba->nvmeio_trc_size - 1);
	skip = phba->nvmeio_trc_output_idx;

	len += snprintf(buf + len, size - len,
			"%s IO Trace %s: next_idx %d skip %d size %d\n",
			(phba->nvmet_support ? "NVME" : "NVMET"),
			(state ? "Enabled" : "Disabled"),
			index, skip, phba->nvmeio_trc_size);

	if (!phba->nvmeio_trc || state)
		return len;

	/* trace MUST bhe off to continue */

	for (i = index; i < phba->nvmeio_trc_size; i++) {
		if (skip) {
			skip--;
			continue;
		}
		dtp = phba->nvmeio_trc + i;
		phba->nvmeio_trc_output_idx++;

		if (!dtp->fmt)
			continue;

		len +=  snprintf(buf + len, size - len, dtp->fmt,
			dtp->data1, dtp->data2, dtp->data3);

		if (phba->nvmeio_trc_output_idx >= phba->nvmeio_trc_size) {
			phba->nvmeio_trc_output_idx = 0;
			len += snprintf(buf + len, size - len,
					"Trace Complete\n");
			goto out;
		}

		if (len >= (size - LPFC_DEBUG_OUT_LINE_SZ)) {
			len += snprintf(buf + len, size - len,
					"Trace Continue (%d of %d)\n",
					phba->nvmeio_trc_output_idx,
					phba->nvmeio_trc_size);
			goto out;
		}
	}
	for (i = 0; i < index; i++) {
		if (skip) {
			skip--;
			continue;
		}
		dtp = phba->nvmeio_trc + i;
		phba->nvmeio_trc_output_idx++;

		if (!dtp->fmt)
			continue;

		len +=  snprintf(buf + len, size - len, dtp->fmt,
			dtp->data1, dtp->data2, dtp->data3);

		if (phba->nvmeio_trc_output_idx >= phba->nvmeio_trc_size) {
			phba->nvmeio_trc_output_idx = 0;
			len += snprintf(buf + len, size - len,
					"Trace Complete\n");
			goto out;
		}

		if (len >= (size - LPFC_DEBUG_OUT_LINE_SZ)) {
			len += snprintf(buf + len, size - len,
					"Trace Continue (%d of %d)\n",
					phba->nvmeio_trc_output_idx,
					phba->nvmeio_trc_size);
			goto out;
		}
	}

	len += snprintf(buf + len, size - len,
			"Trace Done\n");
out:
	return len;
}

/**
 * lpfc_debugfs_cpucheck_data - Dump target node list to a buffer
 * @vport: The vport to gather target node info from.
 * @buf: The buffer to dump log into.
 * @size: The maximum amount of data to process.
 *
 * Description:
 * This routine dumps the NVME statistics associated with @vport
 *
 * Return Value:
 * This routine returns the amount of bytes that were dumped into @buf and will
 * not exceed @size.
 **/
static int
lpfc_debugfs_cpucheck_data(struct lpfc_vport *vport, char *buf, int size)
{
	struct lpfc_hba   *phba = vport->phba;
	int i;
	int len = 0;
	uint32_t tot_xmt = 0;
	uint32_t tot_rcv = 0;
	uint32_t tot_cmpl = 0;
	uint32_t tot_ccmpl = 0;

	if (phba->nvmet_support == 0) {
		/* NVME Initiator */
		len += snprintf(buf + len, PAGE_SIZE - len,
				"CPUcheck %s\n",
				(phba->cpucheck_on & LPFC_CHECK_NVME_IO ?
					"Enabled" : "Disabled"));
		for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
			if (i >= LPFC_CHECK_CPU_CNT)
				break;
			len += snprintf(buf + len, PAGE_SIZE - len,
					"%02d: xmit x%08x cmpl x%08x\n",
					i, phba->cpucheck_xmt_io[i],
					phba->cpucheck_cmpl_io[i]);
			tot_xmt += phba->cpucheck_xmt_io[i];
			tot_cmpl += phba->cpucheck_cmpl_io[i];
		}
		len += snprintf(buf + len, PAGE_SIZE - len,
				"tot:xmit x%08x cmpl x%08x\n",
				tot_xmt, tot_cmpl);
		return len;
	}

	/* NVME Target */
	len += snprintf(buf + len, PAGE_SIZE - len,
			"CPUcheck %s ",
			(phba->cpucheck_on & LPFC_CHECK_NVMET_IO ?
				"IO Enabled - " : "IO Disabled - "));
	len += snprintf(buf + len, PAGE_SIZE - len,
			"%s\n",
			(phba->cpucheck_on & LPFC_CHECK_NVMET_RCV ?
				"Rcv Enabled\n" : "Rcv Disabled\n"));
	for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
		if (i >= LPFC_CHECK_CPU_CNT)
			break;
		len += snprintf(buf + len, PAGE_SIZE - len,
				"%02d: xmit x%08x ccmpl x%08x "
				"cmpl x%08x rcv x%08x\n",
				i, phba->cpucheck_xmt_io[i],
				phba->cpucheck_ccmpl_io[i],
				phba->cpucheck_cmpl_io[i],
				phba->cpucheck_rcv_io[i]);
		tot_xmt += phba->cpucheck_xmt_io[i];
		tot_rcv += phba->cpucheck_rcv_io[i];
		tot_cmpl += phba->cpucheck_cmpl_io[i];
		tot_ccmpl += phba->cpucheck_ccmpl_io[i];
	}
	len += snprintf(buf + len, PAGE_SIZE - len,
			"tot:xmit x%08x ccmpl x%08x cmpl x%08x rcv x%08x\n",
			tot_xmt, tot_ccmpl, tot_cmpl, tot_rcv);
	return len;
}

#endif

/**
 * lpfc_debugfs_disc_trc - Store discovery trace log
 * @vport: The vport to associate this trace string with for retrieval.
 * @mask: Log entry classification.
 * @fmt: Format string to be displayed when dumping the log.
 * @data1: 1st data parameter to be applied to @fmt.
 * @data2: 2nd data parameter to be applied to @fmt.
 * @data3: 3rd data parameter to be applied to @fmt.
 *
 * Description:
 * This routine is used by the driver code to add a debugfs log entry to the
 * discovery trace buffer associated with @vport. Only entries with a @mask that
 * match the current debugfs discovery mask will be saved. Entries that do not
 * match will be thrown away. @fmt, @data1, @data2, and @data3 are used like
 * printf when displaying the log.
 **/
inline void
lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt,
	uint32_t data1, uint32_t data2, uint32_t data3)
{
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
	struct lpfc_debugfs_trc *dtp;
	int index;

	if (!(lpfc_debugfs_mask_disc_trc & mask))
		return;

	if (!lpfc_debugfs_enable || !lpfc_debugfs_max_disc_trc ||
		!vport || !vport->disc_trc)
		return;

	index = atomic_inc_return(&vport->disc_trc_cnt) &
		(lpfc_debugfs_max_disc_trc - 1);
	dtp = vport->disc_trc + index;
	dtp->fmt = fmt;
	dtp->data1 = data1;
	dtp->data2 = data2;
	dtp->data3 = data3;
	dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
	dtp->jif = jiffies;
#endif
	return;
}

/**
 * lpfc_debugfs_slow_ring_trc - Store slow ring trace log
 * @phba: The phba to associate this trace string with for retrieval.
 * @fmt: Format string to be displayed when dumping the log.
 * @data1: 1st data parameter to be applied to @fmt.
 * @data2: 2nd data parameter to be applied to @fmt.
 * @data3: 3rd data parameter to be applied to @fmt.
 *
 * Description:
 * This routine is used by the driver code to add a debugfs log entry to the
 * discovery trace buffer associated with @vport. @fmt, @data1, @data2, and
 * @data3 are used like printf when displaying the log.
 **/
inline void
lpfc_debugfs_slow_ring_trc(struct lpfc_hba *phba, char *fmt,
	uint32_t data1, uint32_t data2, uint32_t data3)
{
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
	struct lpfc_debugfs_trc *dtp;
	int index;

	if (!lpfc_debugfs_enable || !lpfc_debugfs_max_slow_ring_trc ||
		!phba || !phba->slow_ring_trc)
		return;

	index = atomic_inc_return(&phba->slow_ring_trc_cnt) &
		(lpfc_debugfs_max_slow_ring_trc - 1);
	dtp = phba->slow_ring_trc + index;
	dtp->fmt = fmt;
	dtp->data1 = data1;
	dtp->data2 = data2;
	dtp->data3 = data3;
	dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
	dtp->jif = jiffies;
#endif
	return;
}

/**
 * lpfc_debugfs_nvme_trc - Store NVME/NVMET trace log
 * @phba: The phba to associate this trace string with for retrieval.
 * @fmt: Format string to be displayed when dumping the log.
 * @data1: 1st data parameter to be applied to @fmt.
 * @data2: 2nd data parameter to be applied to @fmt.
 * @data3: 3rd data parameter to be applied to @fmt.
 *
 * Description:
 * This routine is used by the driver code to add a debugfs log entry to the
 * nvme trace buffer associated with @phba. @fmt, @data1, @data2, and
 * @data3 are used like printf when displaying the log.
 **/
inline void
lpfc_debugfs_nvme_trc(struct lpfc_hba *phba, char *fmt,
		      uint16_t data1, uint16_t data2, uint32_t data3)
{
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
	struct lpfc_debugfs_nvmeio_trc *dtp;
	int index;

	if (!phba->nvmeio_trc_on || !phba->nvmeio_trc)
		return;

	index = atomic_inc_return(&phba->nvmeio_trc_cnt) &
		(phba->nvmeio_trc_size - 1);
	dtp = phba->nvmeio_trc + index;
	dtp->fmt = fmt;
	dtp->data1 = data1;
	dtp->data2 = data2;
	dtp->data3 = data3;
#endif
}

#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
/**
 * lpfc_debugfs_disc_trc_open - Open the discovery trace log
 * @inode: The inode pointer that contains a vport pointer.
 * @file: The file pointer to attach the log output.
 *
 * Description:
 * This routine is the entry point for the debugfs open file operation. It gets
 * the vport from the i_private field in @inode, allocates the necessary buffer
 * for the log, fills the buffer from the in-memory log for this vport, and then
 * returns a pointer to that log in the private_data field in @file.
 *
 * Returns:
 * This function returns zero if successful. On error it will return a negative
 * error value.
 **/
static int
lpfc_debugfs_disc_trc_open(struct inode *inode, struct file *file)
{
	struct lpfc_vport *vport = inode->i_private;
	struct lpfc_debug *debug;
	int size;
	int rc = -ENOMEM;

	if (!lpfc_debugfs_max_disc_trc) {
		 rc = -ENOSPC;
		goto out;
	}

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		goto out;

	/* Round to page boundary */
	size =  (lpfc_debugfs_max_disc_trc * LPFC_DEBUG_TRC_ENTRY_SIZE);
	size = PAGE_ALIGN(size);

	debug->buffer = kmalloc(size, GFP_KERNEL);
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

	debug->len = lpfc_debugfs_disc_trc_data(vport, debug->buffer, size);
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

/**
 * lpfc_debugfs_slow_ring_trc_open - Open the Slow Ring trace log
 * @inode: The inode pointer that contains a vport pointer.
 * @file: The file pointer to attach the log output.
 *
 * Description:
 * This routine is the entry point for the debugfs open file operation. It gets
 * the vport from the i_private field in @inode, allocates the necessary buffer
 * for the log, fills the buffer from the in-memory log for this vport, and then
 * returns a pointer to that log in the private_data field in @file.
 *
 * Returns:
 * This function returns zero if successful. On error it will return a negative
 * error value.
 **/
static int
lpfc_debugfs_slow_ring_trc_open(struct inode *inode, struct file *file)
{
	struct lpfc_hba *phba = inode->i_private;
	struct lpfc_debug *debug;
	int size;
	int rc = -ENOMEM;

	if (!lpfc_debugfs_max_slow_ring_trc) {
		 rc = -ENOSPC;
		goto out;
	}

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		goto out;

	/* Round to page boundary */
	size =  (lpfc_debugfs_max_slow_ring_trc * LPFC_DEBUG_TRC_ENTRY_SIZE);
	size = PAGE_ALIGN(size);

	debug->buffer = kmalloc(size, GFP_KERNEL);
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

	debug->len = lpfc_debugfs_slow_ring_trc_data(phba, debug->buffer, size);
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

/**
 * lpfc_debugfs_hbqinfo_open - Open the hbqinfo debugfs buffer
 * @inode: The inode pointer that contains a vport pointer.
 * @file: The file pointer to attach the log output.
 *
 * Description:
 * This routine is the entry point for the debugfs open file operation. It gets
 * the vport from the i_private field in @inode, allocates the necessary buffer
 * for the log, fills the buffer from the in-memory log for this vport, and then
 * returns a pointer to that log in the private_data field in @file.
 *
 * Returns:
 * This function returns zero if successful. On error it will return a negative
 * error value.
 **/
static int
lpfc_debugfs_hbqinfo_open(struct inode *inode, struct file *file)
{
	struct lpfc_hba *phba = inode->i_private;
	struct lpfc_debug *debug;
	int rc = -ENOMEM;

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		goto out;

	/* Round to page boundary */
	debug->buffer = kmalloc(LPFC_HBQINFO_SIZE, GFP_KERNEL);
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

	debug->len = lpfc_debugfs_hbqinfo_data(phba, debug->buffer,
		LPFC_HBQINFO_SIZE);
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

/**
 * lpfc_debugfs_dumpHBASlim_open - Open the Dump HBA SLIM debugfs buffer
 * @inode: The inode pointer that contains a vport pointer.
 * @file: The file pointer to attach the log output.
 *
 * Description:
 * This routine is the entry point for the debugfs open file operation. It gets
 * the vport from the i_private field in @inode, allocates the necessary buffer
 * for the log, fills the buffer from the in-memory log for this vport, and then
 * returns a pointer to that log in the private_data field in @file.
 *
 * Returns:
 * This function returns zero if successful. On error it will return a negative
 * error value.
 **/
static int
lpfc_debugfs_dumpHBASlim_open(struct inode *inode, struct file *file)
{
	struct lpfc_hba *phba = inode->i_private;
	struct lpfc_debug *debug;
	int rc = -ENOMEM;

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		goto out;

	/* Round to page boundary */
	debug->buffer = kmalloc(LPFC_DUMPHBASLIM_SIZE, GFP_KERNEL);
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

	debug->len = lpfc_debugfs_dumpHBASlim_data(phba, debug->buffer,
		LPFC_DUMPHBASLIM_SIZE);
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

/**
 * lpfc_debugfs_dumpHostSlim_open - Open the Dump Host SLIM debugfs buffer
 * @inode: The inode pointer that contains a vport pointer.
 * @file: The file pointer to attach the log output.
 *
 * Description:
 * This routine is the entry point for the debugfs open file operation. It gets
 * the vport from the i_private field in @inode, allocates the necessary buffer
 * for the log, fills the buffer from the in-memory log for this vport, and then
 * returns a pointer to that log in the private_data field in @file.
 *
 * Returns:
 * This function returns zero if successful. On error it will return a negative
 * error value.
 **/
static int
lpfc_debugfs_dumpHostSlim_open(struct inode *inode, struct file *file)
{
	struct lpfc_hba *phba = inode->i_private;
	struct lpfc_debug *debug;
	int rc = -ENOMEM;

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		goto out;

	/* Round to page boundary */
	debug->buffer = kmalloc(LPFC_DUMPHOSTSLIM_SIZE, GFP_KERNEL);
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

	debug->len = lpfc_debugfs_dumpHostSlim_data(phba, debug->buffer,
		LPFC_DUMPHOSTSLIM_SIZE);
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

static int
lpfc_debugfs_dumpData_open(struct inode *inode, struct file *file)
{
	struct lpfc_debug *debug;
	int rc = -ENOMEM;

	if (!_dump_buf_data)
		return -EBUSY;

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		goto out;

	/* Round to page boundary */
	pr_err("9059 BLKGRD:  %s: _dump_buf_data=0x%p\n",
			__func__, _dump_buf_data);
	debug->buffer = _dump_buf_data;
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

	debug->len = (1 << _dump_buf_data_order) << PAGE_SHIFT;
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

static int
lpfc_debugfs_dumpDif_open(struct inode *inode, struct file *file)
{
	struct lpfc_debug *debug;
	int rc = -ENOMEM;

	if (!_dump_buf_dif)
		return -EBUSY;

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		goto out;

	/* Round to page boundary */
	pr_err("9060 BLKGRD: %s: _dump_buf_dif=0x%p file=%pD\n",
			__func__, _dump_buf_dif, file);
	debug->buffer = _dump_buf_dif;
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

	debug->len = (1 << _dump_buf_dif_order) << PAGE_SHIFT;
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

static ssize_t
lpfc_debugfs_dumpDataDif_write(struct file *file, const char __user *buf,
		  size_t nbytes, loff_t *ppos)
{
	/*
	 * The Data/DIF buffers only save one failing IO
	 * The write op is used as a reset mechanism after an IO has
	 * already been saved to the next one can be saved
	 */
	spin_lock(&_dump_buf_lock);

	memset((void *)_dump_buf_data, 0,
			((1 << PAGE_SHIFT) << _dump_buf_data_order));
	memset((void *)_dump_buf_dif, 0,
			((1 << PAGE_SHIFT) << _dump_buf_dif_order));

	_dump_buf_done = 0;

	spin_unlock(&_dump_buf_lock);

	return nbytes;
}

static ssize_t
lpfc_debugfs_dif_err_read(struct file *file, char __user *buf,
	size_t nbytes, loff_t *ppos)
{
	struct dentry *dent = file->f_path.dentry;
	struct lpfc_hba *phba = file->private_data;
	char cbuf[32];
	uint64_t tmp = 0;
	int cnt = 0;

	if (dent == phba->debug_writeGuard)
		cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_wgrd_cnt);
	else if (dent == phba->debug_writeApp)
		cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_wapp_cnt);
	else if (dent == phba->debug_writeRef)
		cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_wref_cnt);
	else if (dent == phba->debug_readGuard)
		cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_rgrd_cnt);
	else if (dent == phba->debug_readApp)
		cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_rapp_cnt);
	else if (dent == phba->debug_readRef)
		cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_rref_cnt);
	else if (dent == phba->debug_InjErrNPortID)
		cnt = snprintf(cbuf, 32, "0x%06x\n", phba->lpfc_injerr_nportid);
	else if (dent == phba->debug_InjErrWWPN) {
		memcpy(&tmp, &phba->lpfc_injerr_wwpn, sizeof(struct lpfc_name));
		tmp = cpu_to_be64(tmp);
		cnt = snprintf(cbuf, 32, "0x%016llx\n", tmp);
	} else if (dent == phba->debug_InjErrLBA) {
		if (phba->lpfc_injerr_lba == (sector_t)(-1))
			cnt = snprintf(cbuf, 32, "off\n");
		else
			cnt = snprintf(cbuf, 32, "0x%llx\n",
				 (uint64_t) phba->lpfc_injerr_lba);
	} else
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
			 "0547 Unknown debugfs error injection entry\n");

	return simple_read_from_buffer(buf, nbytes, ppos, &cbuf, cnt);
}

static ssize_t
lpfc_debugfs_dif_err_write(struct file *file, const char __user *buf,
	size_t nbytes, loff_t *ppos)
{
	struct dentry *dent = file->f_path.dentry;
	struct lpfc_hba *phba = file->private_data;
	char dstbuf[33];
	uint64_t tmp = 0;
	int size;

	memset(dstbuf, 0, 33);
	size = (nbytes < 32) ? nbytes : 32;
	if (copy_from_user(dstbuf, buf, size))
		return 0;

	if (dent == phba->debug_InjErrLBA) {
		if ((buf[0] == 'o') && (buf[1] == 'f') && (buf[2] == 'f'))
			tmp = (uint64_t)(-1);
	}

	if ((tmp == 0) && (kstrtoull(dstbuf, 0, &tmp)))
		return 0;

	if (dent == phba->debug_writeGuard)
		phba->lpfc_injerr_wgrd_cnt = (uint32_t)tmp;
	else if (dent == phba->debug_writeApp)
		phba->lpfc_injerr_wapp_cnt = (uint32_t)tmp;
	else if (dent == phba->debug_writeRef)
		phba->lpfc_injerr_wref_cnt = (uint32_t)tmp;
	else if (dent == phba->debug_readGuard)
		phba->lpfc_injerr_rgrd_cnt = (uint32_t)tmp;
	else if (dent == phba->debug_readApp)
		phba->lpfc_injerr_rapp_cnt = (uint32_t)tmp;
	else if (dent == phba->debug_readRef)
		phba->lpfc_injerr_rref_cnt = (uint32_t)tmp;
	else if (dent == phba->debug_InjErrLBA)
		phba->lpfc_injerr_lba = (sector_t)tmp;
	else if (dent == phba->debug_InjErrNPortID)
		phba->lpfc_injerr_nportid = (uint32_t)(tmp & Mask_DID);
	else if (dent == phba->debug_InjErrWWPN) {
		tmp = cpu_to_be64(tmp);
		memcpy(&phba->lpfc_injerr_wwpn, &tmp, sizeof(struct lpfc_name));
	} else
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
			 "0548 Unknown debugfs error injection entry\n");

	return nbytes;
}

static int
lpfc_debugfs_dif_err_release(struct inode *inode, struct file *file)
{
	return 0;
}

/**
 * lpfc_debugfs_nodelist_open - Open the nodelist debugfs file
 * @inode: The inode pointer that contains a vport pointer.
 * @file: The file pointer to attach the log output.
 *
 * Description:
 * This routine is the entry point for the debugfs open file operation. It gets
 * the vport from the i_private field in @inode, allocates the necessary buffer
 * for the log, fills the buffer from the in-memory log for this vport, and then
 * returns a pointer to that log in the private_data field in @file.
 *
 * Returns:
 * This function returns zero if successful. On error it will return a negative
 * error value.
 **/
static int
lpfc_debugfs_nodelist_open(struct inode *inode, struct file *file)
{
	struct lpfc_vport *vport = inode->i_private;
	struct lpfc_debug *debug;
	int rc = -ENOMEM;

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		goto out;

	/* Round to page boundary */
	debug->buffer = kmalloc(LPFC_NODELIST_SIZE, GFP_KERNEL);
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

	debug->len = lpfc_debugfs_nodelist_data(vport, debug->buffer,
		LPFC_NODELIST_SIZE);
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

/**
 * lpfc_debugfs_lseek - Seek through a debugfs file
 * @file: The file pointer to seek through.
 * @off: The offset to seek to or the amount to seek by.
 * @whence: Indicates how to seek.
 *
 * Description:
 * This routine is the entry point for the debugfs lseek file operation. The
 * @whence parameter indicates whether @off is the offset to directly seek to,
 * or if it is a value to seek forward or reverse by. This function figures out
 * what the new offset of the debugfs file will be and assigns that value to the
 * f_pos field of @file.
 *
 * Returns:
 * This function returns the new offset if successful and returns a negative
 * error if unable to process the seek.
 **/
static loff_t
lpfc_debugfs_lseek(struct file *file, loff_t off, int whence)
{
	struct lpfc_debug *debug = file->private_data;
	return fixed_size_llseek(file, off, whence, debug->len);
}

/**
 * lpfc_debugfs_read - Read a debugfs file
 * @file: The file pointer to read from.
 * @buf: The buffer to copy the data to.
 * @nbytes: The number of bytes to read.
 * @ppos: The position in the file to start reading from.
 *
 * Description:
 * This routine reads data from from the buffer indicated in the private_data
 * field of @file. It will start reading at @ppos and copy up to @nbytes of
 * data to @buf.
 *
 * Returns:
 * This function returns the amount of data that was read (this could be less
 * than @nbytes if the end of the file was reached) or a negative error value.
 **/
static ssize_t
lpfc_debugfs_read(struct file *file, char __user *buf,
		  size_t nbytes, loff_t *ppos)
{
	struct lpfc_debug *debug = file->private_data;

	return simple_read_from_buffer(buf, nbytes, ppos, debug->buffer,
				       debug->len);
}

/**
 * lpfc_debugfs_release - Release the buffer used to store debugfs file data
 * @inode: The inode pointer that contains a vport pointer. (unused)
 * @file: The file pointer that contains the buffer to release.
 *
 * Description:
 * This routine frees the buffer that was allocated when the debugfs file was
 * opened.
 *
 * Returns:
 * This function returns zero.
 **/
static int
lpfc_debugfs_release(struct inode *inode, struct file *file)
{
	struct lpfc_debug *debug = file->private_data;

	kfree(debug->buffer);
	kfree(debug);

	return 0;
}

static int
lpfc_debugfs_dumpDataDif_release(struct inode *inode, struct file *file)
{
	struct lpfc_debug *debug = file->private_data;

	debug->buffer = NULL;
	kfree(debug);

	return 0;
}


static int
lpfc_debugfs_nvmestat_open(struct inode *inode, struct file *file)
{
	struct lpfc_vport *vport = inode->i_private;
	struct lpfc_debug *debug;
	int rc = -ENOMEM;

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		goto out;

	 /* Round to page boundary */
	debug->buffer = kmalloc(LPFC_NVMESTAT_SIZE, GFP_KERNEL);
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

	debug->len = lpfc_debugfs_nvmestat_data(vport, debug->buffer,
		LPFC_NVMESTAT_SIZE);

	debug->i_private = inode->i_private;
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

static ssize_t
lpfc_debugfs_nvmestat_write(struct file *file, const char __user *buf,
			    size_t nbytes, loff_t *ppos)
{
	struct lpfc_debug *debug = file->private_data;
	struct lpfc_vport *vport = (struct lpfc_vport *)debug->i_private;
	struct lpfc_hba   *phba = vport->phba;
	struct lpfc_nvmet_tgtport *tgtp;
	char mybuf[64];
	char *pbuf;

	if (!phba->targetport)
		return -ENXIO;

	if (nbytes > 64)
		nbytes = 64;

	memset(mybuf, 0, sizeof(mybuf));

	if (copy_from_user(mybuf, buf, nbytes))
		return -EFAULT;
	pbuf = &mybuf[0];

	tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
	if ((strncmp(pbuf, "reset", strlen("reset")) == 0) ||
	    (strncmp(pbuf, "zero", strlen("zero")) == 0)) {
		atomic_set(&tgtp->rcv_ls_req_in, 0);
		atomic_set(&tgtp->rcv_ls_req_out, 0);
		atomic_set(&tgtp->rcv_ls_req_drop, 0);
		atomic_set(&tgtp->xmt_ls_abort, 0);
		atomic_set(&tgtp->xmt_ls_abort_cmpl, 0);
		atomic_set(&tgtp->xmt_ls_rsp, 0);
		atomic_set(&tgtp->xmt_ls_drop, 0);
		atomic_set(&tgtp->xmt_ls_rsp_error, 0);
		atomic_set(&tgtp->xmt_ls_rsp_cmpl, 0);

		atomic_set(&tgtp->rcv_fcp_cmd_in, 0);
		atomic_set(&tgtp->rcv_fcp_cmd_out, 0);
		atomic_set(&tgtp->rcv_fcp_cmd_drop, 0);
		atomic_set(&tgtp->xmt_fcp_drop, 0);
		atomic_set(&tgtp->xmt_fcp_read_rsp, 0);
		atomic_set(&tgtp->xmt_fcp_read, 0);
		atomic_set(&tgtp->xmt_fcp_write, 0);
		atomic_set(&tgtp->xmt_fcp_rsp, 0);
		atomic_set(&tgtp->xmt_fcp_release, 0);
		atomic_set(&tgtp->xmt_fcp_rsp_cmpl, 0);
		atomic_set(&tgtp->xmt_fcp_rsp_error, 0);
		atomic_set(&tgtp->xmt_fcp_rsp_drop, 0);

		atomic_set(&tgtp->xmt_fcp_abort, 0);
		atomic_set(&tgtp->xmt_fcp_abort_cmpl, 0);
		atomic_set(&tgtp->xmt_abort_sol, 0);
		atomic_set(&tgtp->xmt_abort_unsol, 0);
		atomic_set(&tgtp->xmt_abort_rsp, 0);
		atomic_set(&tgtp->xmt_abort_rsp_error, 0);
	}
	return nbytes;
}

static int
lpfc_debugfs_nvmektime_open(struct inode *inode, struct file *file)
{
	struct lpfc_vport *vport = inode->i_private;
	struct lpfc_debug *debug;
	int rc = -ENOMEM;

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		goto out;

	 /* Round to page boundary */
	debug->buffer = kmalloc(LPFC_NVMEKTIME_SIZE, GFP_KERNEL);
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

	debug->len = lpfc_debugfs_nvmektime_data(vport, debug->buffer,
		LPFC_NVMEKTIME_SIZE);

	debug->i_private = inode->i_private;
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

static ssize_t
lpfc_debugfs_nvmektime_write(struct file *file, const char __user *buf,
			     size_t nbytes, loff_t *ppos)
{
	struct lpfc_debug *debug = file->private_data;
	struct lpfc_vport *vport = (struct lpfc_vport *)debug->i_private;
	struct lpfc_hba   *phba = vport->phba;
	char mybuf[64];
	char *pbuf;

	if (nbytes > 64)
		nbytes = 64;

	memset(mybuf, 0, sizeof(mybuf));

	if (copy_from_user(mybuf, buf, nbytes))
		return -EFAULT;
	pbuf = &mybuf[0];

	if ((strncmp(pbuf, "on", sizeof("on") - 1) == 0)) {
		phba->ktime_data_samples = 0;
		phba->ktime_status_samples = 0;
		phba->ktime_seg1_total = 0;
		phba->ktime_seg1_max = 0;
		phba->ktime_seg1_min = 0xffffffff;
		phba->ktime_seg2_total = 0;
		phba->ktime_seg2_max = 0;
		phba->ktime_seg2_min = 0xffffffff;
		phba->ktime_seg3_total = 0;
		phba->ktime_seg3_max = 0;
		phba->ktime_seg3_min = 0xffffffff;
		phba->ktime_seg4_total = 0;
		phba->ktime_seg4_max = 0;
		phba->ktime_seg4_min = 0xffffffff;
		phba->ktime_seg5_total = 0;
		phba->ktime_seg5_max = 0;
		phba->ktime_seg5_min = 0xffffffff;
		phba->ktime_seg6_total = 0;
		phba->ktime_seg6_max = 0;
		phba->ktime_seg6_min = 0xffffffff;
		phba->ktime_seg7_total = 0;
		phba->ktime_seg7_max = 0;
		phba->ktime_seg7_min = 0xffffffff;
		phba->ktime_seg8_total = 0;
		phba->ktime_seg8_max = 0;
		phba->ktime_seg8_min = 0xffffffff;
		phba->ktime_seg9_total = 0;
		phba->ktime_seg9_max = 0;
		phba->ktime_seg9_min = 0xffffffff;
		phba->ktime_seg10_total = 0;
		phba->ktime_seg10_max = 0;
		phba->ktime_seg10_min = 0xffffffff;

		phba->ktime_on = 1;
		return strlen(pbuf);
	} else if ((strncmp(pbuf, "off",
		   sizeof("off") - 1) == 0)) {
		phba->ktime_on = 0;
		return strlen(pbuf);
	} else if ((strncmp(pbuf, "zero",
		   sizeof("zero") - 1) == 0)) {
		phba->ktime_data_samples = 0;
		phba->ktime_status_samples = 0;
		phba->ktime_seg1_total = 0;
		phba->ktime_seg1_max = 0;
		phba->ktime_seg1_min = 0xffffffff;
		phba->ktime_seg2_total = 0;
		phba->ktime_seg2_max = 0;
		phba->ktime_seg2_min = 0xffffffff;
		phba->ktime_seg3_total = 0;
		phba->ktime_seg3_max = 0;
		phba->ktime_seg3_min = 0xffffffff;
		phba->ktime_seg4_total = 0;
		phba->ktime_seg4_max = 0;
		phba->ktime_seg4_min = 0xffffffff;
		phba->ktime_seg5_total = 0;
		phba->ktime_seg5_max = 0;
		phba->ktime_seg5_min = 0xffffffff;
		phba->ktime_seg6_total = 0;
		phba->ktime_seg6_max = 0;
		phba->ktime_seg6_min = 0xffffffff;
		phba->ktime_seg7_total = 0;
		phba->ktime_seg7_max = 0;
		phba->ktime_seg7_min = 0xffffffff;
		phba->ktime_seg8_total = 0;
		phba->ktime_seg8_max = 0;
		phba->ktime_seg8_min = 0xffffffff;
		phba->ktime_seg9_total = 0;
		phba->ktime_seg9_max = 0;
		phba->ktime_seg9_min = 0xffffffff;
		phba->ktime_seg10_total = 0;
		phba->ktime_seg10_max = 0;
		phba->ktime_seg10_min = 0xffffffff;
		return strlen(pbuf);
	}
	return -EINVAL;
}

static int
lpfc_debugfs_nvmeio_trc_open(struct inode *inode, struct file *file)
{
	struct lpfc_hba *phba = inode->i_private;
	struct lpfc_debug *debug;
	int rc = -ENOMEM;

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		goto out;

	 /* Round to page boundary */
	debug->buffer = kmalloc(LPFC_NVMEIO_TRC_SIZE, GFP_KERNEL);
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

	debug->len = lpfc_debugfs_nvmeio_trc_data(phba, debug->buffer,
		LPFC_NVMEIO_TRC_SIZE);

	debug->i_private = inode->i_private;
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

static ssize_t
lpfc_debugfs_nvmeio_trc_write(struct file *file, const char __user *buf,
			      size_t nbytes, loff_t *ppos)
{
	struct lpfc_debug *debug = file->private_data;
	struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
	int i;
	unsigned long sz;
	char mybuf[64];
	char *pbuf;

	if (nbytes > 64)
		nbytes = 64;

	memset(mybuf, 0, sizeof(mybuf));

	if (copy_from_user(mybuf, buf, nbytes))
		return -EFAULT;
	pbuf = &mybuf[0];

	if ((strncmp(pbuf, "off", sizeof("off") - 1) == 0)) {
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
				"0570 nvmeio_trc_off\n");
		phba->nvmeio_trc_output_idx = 0;
		phba->nvmeio_trc_on = 0;
		return strlen(pbuf);
	} else if ((strncmp(pbuf, "on", sizeof("on") - 1) == 0)) {
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
				"0571 nvmeio_trc_on\n");
		phba->nvmeio_trc_output_idx = 0;
		phba->nvmeio_trc_on = 1;
		return strlen(pbuf);
	}

	/* We must be off to allocate the trace buffer */
	if (phba->nvmeio_trc_on != 0)
		return -EINVAL;

	/* If not on or off, the parameter is the trace buffer size */
	i = kstrtoul(pbuf, 0, &sz);
	if (i)
		return -EINVAL;
	phba->nvmeio_trc_size = (uint32_t)sz;

	/* It must be a power of 2 - round down */
	i = 0;
	while (sz > 1) {
		sz = sz >> 1;
		i++;
	}
	sz = (1 << i);
	if (phba->nvmeio_trc_size != sz)
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
				"0572 nvmeio_trc_size changed to %ld\n",
				sz);
	phba->nvmeio_trc_size = (uint32_t)sz;

	/* If one previously exists, free it */
	kfree(phba->nvmeio_trc);

	/* Allocate new trace buffer and initialize */
	phba->nvmeio_trc = kmalloc((sizeof(struct lpfc_debugfs_nvmeio_trc) *
				    sz), GFP_KERNEL);
	if (!phba->nvmeio_trc) {
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
				"0573 Cannot create debugfs "
				"nvmeio_trc buffer\n");
		return -ENOMEM;
	}
	memset(phba->nvmeio_trc, 0,
	       (sizeof(struct lpfc_debugfs_nvmeio_trc) * sz));
	atomic_set(&phba->nvmeio_trc_cnt, 0);
	phba->nvmeio_trc_on = 0;
	phba->nvmeio_trc_output_idx = 0;

	return strlen(pbuf);
}

static int
lpfc_debugfs_cpucheck_open(struct inode *inode, struct file *file)
{
	struct lpfc_vport *vport = inode->i_private;
	struct lpfc_debug *debug;
	int rc = -ENOMEM;

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		goto out;

	 /* Round to page boundary */
	debug->buffer = kmalloc(LPFC_CPUCHECK_SIZE, GFP_KERNEL);
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

	debug->len = lpfc_debugfs_cpucheck_data(vport, debug->buffer,
		LPFC_NVMEKTIME_SIZE);

	debug->i_private = inode->i_private;
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

static ssize_t
lpfc_debugfs_cpucheck_write(struct file *file, const char __user *buf,
			    size_t nbytes, loff_t *ppos)
{
	struct lpfc_debug *debug = file->private_data;
	struct lpfc_vport *vport = (struct lpfc_vport *)debug->i_private;
	struct lpfc_hba   *phba = vport->phba;
	char mybuf[64];
	char *pbuf;
	int i;

	if (nbytes > 64)
		nbytes = 64;

	memset(mybuf, 0, sizeof(mybuf));

	if (copy_from_user(mybuf, buf, nbytes))
		return -EFAULT;
	pbuf = &mybuf[0];

	if ((strncmp(pbuf, "on", sizeof("on") - 1) == 0)) {
		if (phba->nvmet_support)
			phba->cpucheck_on |= LPFC_CHECK_NVMET_IO;
		else
			phba->cpucheck_on |= LPFC_CHECK_NVME_IO;
		return strlen(pbuf);
	} else if ((strncmp(pbuf, "rcv",
		   sizeof("rcv") - 1) == 0)) {
		if (phba->nvmet_support)
			phba->cpucheck_on |= LPFC_CHECK_NVMET_RCV;
		else
			return -EINVAL;
		return strlen(pbuf);
	} else if ((strncmp(pbuf, "off",
		   sizeof("off") - 1) == 0)) {
		phba->cpucheck_on = LPFC_CHECK_OFF;
		return strlen(pbuf);
	} else if ((strncmp(pbuf, "zero",
		   sizeof("zero") - 1) == 0)) {
		for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
			if (i >= LPFC_CHECK_CPU_CNT)
				break;
			phba->cpucheck_rcv_io[i] = 0;
			phba->cpucheck_xmt_io[i] = 0;
			phba->cpucheck_cmpl_io[i] = 0;
			phba->cpucheck_ccmpl_io[i] = 0;
		}
		return strlen(pbuf);
	}
	return -EINVAL;
}

/*
 * ---------------------------------
 * iDiag debugfs file access methods
 * ---------------------------------
 *
 * All access methods are through the proper SLI4 PCI function's debugfs
 * iDiag directory:
 *
 *     /sys/kernel/debug/lpfc/fn<#>/iDiag
 */

/**
 * lpfc_idiag_cmd_get - Get and parse idiag debugfs comands from user space
 * @buf: The pointer to the user space buffer.
 * @nbytes: The number of bytes in the user space buffer.
 * @idiag_cmd: pointer to the idiag command struct.
 *
 * This routine reads data from debugfs user space buffer and parses the
 * buffer for getting the idiag command and arguments. The while space in
 * between the set of data is used as the parsing separator.
 *
 * This routine returns 0 when successful, it returns proper error code
 * back to the user space in error conditions.
 */
static int lpfc_idiag_cmd_get(const char __user *buf, size_t nbytes,
			      struct lpfc_idiag_cmd *idiag_cmd)
{
	char mybuf[64];
	char *pbuf, *step_str;
	int i;
	size_t bsize;

	memset(mybuf, 0, sizeof(mybuf));
	memset(idiag_cmd, 0, sizeof(*idiag_cmd));
	bsize = min(nbytes, (sizeof(mybuf)-1));

	if (copy_from_user(mybuf, buf, bsize))
		return -EFAULT;
	pbuf = &mybuf[0];
	step_str = strsep(&pbuf, "\t ");

	/* The opcode must present */
	if (!step_str)
		return -EINVAL;

	idiag_cmd->opcode = simple_strtol(step_str, NULL, 0);
	if (idiag_cmd->opcode == 0)
		return -EINVAL;

	for (i = 0; i < LPFC_IDIAG_CMD_DATA_SIZE; i++) {
		step_str = strsep(&pbuf, "\t ");
		if (!step_str)
			return i;
		idiag_cmd->data[i] = simple_strtol(step_str, NULL, 0);
	}
	return i;
}

/**
 * lpfc_idiag_open - idiag open debugfs
 * @inode: The inode pointer that contains a pointer to phba.
 * @file: The file pointer to attach the file operation.
 *
 * Description:
 * This routine is the entry point for the debugfs open file operation. It
 * gets the reference to phba from the i_private field in @inode, it then
 * allocates buffer for the file operation, performs the necessary PCI config
 * space read into the allocated buffer according to the idiag user command
 * setup, and then returns a pointer to buffer in the private_data field in
 * @file.
 *
 * Returns:
 * This function returns zero if successful. On error it will return an
 * negative error value.
 **/
static int
lpfc_idiag_open(struct inode *inode, struct file *file)
{
	struct lpfc_debug *debug;

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		return -ENOMEM;

	debug->i_private = inode->i_private;
	debug->buffer = NULL;
	file->private_data = debug;

	return 0;
}

/**
 * lpfc_idiag_release - Release idiag access file operation
 * @inode: The inode pointer that contains a vport pointer. (unused)
 * @file: The file pointer that contains the buffer to release.
 *
 * Description:
 * This routine is the generic release routine for the idiag access file
 * operation, it frees the buffer that was allocated when the debugfs file
 * was opened.
 *
 * Returns:
 * This function returns zero.
 **/
static int
lpfc_idiag_release(struct inode *inode, struct file *file)
{
	struct lpfc_debug *debug = file->private_data;

	/* Free the buffers to the file operation */
	kfree(debug->buffer);
	kfree(debug);

	return 0;
}

/**
 * lpfc_idiag_cmd_release - Release idiag cmd access file operation
 * @inode: The inode pointer that contains a vport pointer. (unused)
 * @file: The file pointer that contains the buffer to release.
 *
 * Description:
 * This routine frees the buffer that was allocated when the debugfs file
 * was opened. It also reset the fields in the idiag command struct in the
 * case of command for write operation.
 *
 * Returns:
 * This function returns zero.
 **/
static int
lpfc_idiag_cmd_release(struct inode *inode, struct file *file)
{
	struct lpfc_debug *debug = file->private_data;

	if (debug->op == LPFC_IDIAG_OP_WR) {
		switch (idiag.cmd.opcode) {
		case LPFC_IDIAG_CMD_PCICFG_WR:
		case LPFC_IDIAG_CMD_PCICFG_ST:
		case LPFC_IDIAG_CMD_PCICFG_CL:
		case LPFC_IDIAG_CMD_QUEACC_WR:
		case LPFC_IDIAG_CMD_QUEACC_ST:
		case LPFC_IDIAG_CMD_QUEACC_CL:
			memset(&idiag, 0, sizeof(idiag));
			break;
		default:
			break;
		}
	}

	/* Free the buffers to the file operation */
	kfree(debug->buffer);
	kfree(debug);

	return 0;
}

/**
 * lpfc_idiag_pcicfg_read - idiag debugfs read pcicfg
 * @file: The file pointer to read from.
 * @buf: The buffer to copy the data to.
 * @nbytes: The number of bytes to read.
 * @ppos: The position in the file to start reading from.
 *
 * Description:
 * This routine reads data from the @phba pci config space according to the
 * idiag command, and copies to user @buf. Depending on the PCI config space
 * read command setup, it does either a single register read of a byte
 * (8 bits), a word (16 bits), or a dword (32 bits) or browsing through all
 * registers from the 4K extended PCI config space.
 *
 * Returns:
 * This function returns the amount of data that was read (this could be less
 * than @nbytes if the end of the file was reached) or a negative error value.
 **/
static ssize_t
lpfc_idiag_pcicfg_read(struct file *file, char __user *buf, size_t nbytes,
		       loff_t *ppos)
{
	struct lpfc_debug *debug = file->private_data;
	struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
	int offset_label, offset, len = 0, index = LPFC_PCI_CFG_RD_SIZE;
	int where, count;
	char *pbuffer;
	struct pci_dev *pdev;
	uint32_t u32val;
	uint16_t u16val;
	uint8_t u8val;

	pdev = phba->pcidev;
	if (!pdev)
		return 0;

	/* This is a user read operation */
	debug->op = LPFC_IDIAG_OP_RD;

	if (!debug->buffer)
		debug->buffer = kmalloc(LPFC_PCI_CFG_SIZE, GFP_KERNEL);
	if (!debug->buffer)
		return 0;
	pbuffer = debug->buffer;

	if (*ppos)
		return 0;

	if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD) {
		where = idiag.cmd.data[IDIAG_PCICFG_WHERE_INDX];
		count = idiag.cmd.data[IDIAG_PCICFG_COUNT_INDX];
	} else
		return 0;

	/* Read single PCI config space register */
	switch (count) {
	case SIZE_U8: /* byte (8 bits) */
		pci_read_config_byte(pdev, where, &u8val);
		len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
				"%03x: %02x\n", where, u8val);
		break;
	case SIZE_U16: /* word (16 bits) */
		pci_read_config_word(pdev, where, &u16val);
		len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
				"%03x: %04x\n", where, u16val);
		break;
	case SIZE_U32: /* double word (32 bits) */
		pci_read_config_dword(pdev, where, &u32val);
		len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
				"%03x: %08x\n", where, u32val);
		break;
	case LPFC_PCI_CFG_BROWSE: /* browse all */
		goto pcicfg_browse;
		break;
	default:
		/* illegal count */
		len = 0;
		break;
	}
	return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);

pcicfg_browse:

	/* Browse all PCI config space registers */
	offset_label = idiag.offset.last_rd;
	offset = offset_label;

	/* Read PCI config space */
	len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
			"%03x: ", offset_label);
	while (index > 0) {
		pci_read_config_dword(pdev, offset, &u32val);
		len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
				"%08x ", u32val);
		offset += sizeof(uint32_t);
		if (offset >= LPFC_PCI_CFG_SIZE) {
			len += snprintf(pbuffer+len,
					LPFC_PCI_CFG_SIZE-len, "\n");
			break;
		}
		index -= sizeof(uint32_t);
		if (!index)
			len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
					"\n");
		else if (!(index % (8 * sizeof(uint32_t)))) {
			offset_label += (8 * sizeof(uint32_t));
			len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
					"\n%03x: ", offset_label);
		}
	}

	/* Set up the offset for next portion of pci cfg read */
	if (index == 0) {
		idiag.offset.last_rd += LPFC_PCI_CFG_RD_SIZE;
		if (idiag.offset.last_rd >= LPFC_PCI_CFG_SIZE)
			idiag.offset.last_rd = 0;
	} else
		idiag.offset.last_rd = 0;

	return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
}

/**
 * lpfc_idiag_pcicfg_write - Syntax check and set up idiag pcicfg commands
 * @file: The file pointer to read from.
 * @buf: The buffer to copy the user data from.
 * @nbytes: The number of bytes to get.
 * @ppos: The position in the file to start reading from.
 *
 * This routine get the debugfs idiag command struct from user space and
 * then perform the syntax check for PCI config space read or write command
 * accordingly. In the case of PCI config space read command, it sets up
 * the command in the idiag command struct for the debugfs read operation.
 * In the case of PCI config space write operation, it executes the write
 * operation into the PCI config space accordingly.
 *
 * It returns the @nbytges passing in from debugfs user space when successful.
 * In case of error conditions, it returns proper error code back to the user
 * space.
 */
static ssize_t
lpfc_idiag_pcicfg_write(struct file *file, const char __user *buf,
			size_t nbytes, loff_t *ppos)
{
	struct lpfc_debug *debug = file->private_data;
	struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
	uint32_t where, value, count;
	uint32_t u32val;
	uint16_t u16val;
	uint8_t u8val;
	struct pci_dev *pdev;
	int rc;

	pdev = phba->pcidev;
	if (!pdev)
		return -EFAULT;

	/* This is a user write operation */
	debug->op = LPFC_IDIAG_OP_WR;

	rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd);
	if (rc < 0)
		return rc;

	if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD) {
		/* Sanity check on PCI config read command line arguments */
		if (rc != LPFC_PCI_CFG_RD_CMD_ARG)
			goto error_out;
		/* Read command from PCI config space, set up command fields */
		where = idiag.cmd.data[IDIAG_PCICFG_WHERE_INDX];
		count = idiag.cmd.data[IDIAG_PCICFG_COUNT_INDX];
		if (count == LPFC_PCI_CFG_BROWSE) {
			if (where % sizeof(uint32_t))
				goto error_out;
			/* Starting offset to browse */
			idiag.offset.last_rd = where;
		} else if ((count != sizeof(uint8_t)) &&
			   (count != sizeof(uint16_t)) &&
			   (count != sizeof(uint32_t)))
			goto error_out;
		if (count == sizeof(uint8_t)) {
			if (where > LPFC_PCI_CFG_SIZE - sizeof(uint8_t))
				goto error_out;
			if (where % sizeof(uint8_t))
				goto error_out;
		}
		if (count == sizeof(uint16_t)) {
			if (where > LPFC_PCI_CFG_SIZE - sizeof(uint16_t))
				goto error_out;
			if (where % sizeof(uint16_t))
				goto error_out;
		}
		if (count == sizeof(uint32_t)) {
			if (where > LPFC_PCI_CFG_SIZE - sizeof(uint32_t))
				goto error_out;
			if (where % sizeof(uint32_t))
				goto error_out;
		}
	} else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR ||
		   idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST ||
		   idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) {
		/* Sanity check on PCI config write command line arguments */
		if (rc != LPFC_PCI_CFG_WR_CMD_ARG)
			goto error_out;
		/* Write command to PCI config space, read-modify-write */
		where = idiag.cmd.data[IDIAG_PCICFG_WHERE_INDX];
		count = idiag.cmd.data[IDIAG_PCICFG_COUNT_INDX];
		value = idiag.cmd.data[IDIAG_PCICFG_VALUE_INDX];
		/* Sanity checks */
		if ((count != sizeof(uint8_t)) &&
		    (count != sizeof(uint16_t)) &&
		    (count != sizeof(uint32_t)))
			goto error_out;
		if (count == sizeof(uint8_t)) {
			if (where > LPFC_PCI_CFG_SIZE - sizeof(uint8_t))
				goto error_out;
			if (where % sizeof(uint8_t))
				goto error_out;
			if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR)
				pci_write_config_byte(pdev, where,
						      (uint8_t)value);
			if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) {
				rc = pci_read_config_byte(pdev, where, &u8val);
				if (!rc) {
					u8val |= (uint8_t)value;
					pci_write_config_byte(pdev, where,
							      u8val);
				}
			}
			if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) {
				rc = pci_read_config_byte(pdev, where, &u8val);
				if (!rc) {
					u8val &= (uint8_t)(~value);
					pci_write_config_byte(pdev, where,
							      u8val);
				}
			}
		}
		if (count == sizeof(uint16_t)) {
			if (where > LPFC_PCI_CFG_SIZE - sizeof(uint16_t))
				goto error_out;
			if (where % sizeof(uint16_t))
				goto error_out;
			if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR)
				pci_write_config_word(pdev, where,
						      (uint16_t)value);
			if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) {
				rc = pci_read_config_word(pdev, where, &u16val);
				if (!rc) {
					u16val |= (uint16_t)value;
					pci_write_config_word(pdev, where,
							      u16val);
				}
			}
			if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) {
				rc = pci_read_config_word(pdev, where, &u16val);
				if (!rc) {
					u16val &= (uint16_t)(~value);
					pci_write_config_word(pdev, where,
							      u16val);
				}
			}
		}
		if (count == sizeof(uint32_t)) {
			if (where > LPFC_PCI_CFG_SIZE - sizeof(uint32_t))
				goto error_out;
			if (where % sizeof(uint32_t))
				goto error_out;
			if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR)
				pci_write_config_dword(pdev, where, value);
			if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) {
				rc = pci_read_config_dword(pdev, where,
							   &u32val);
				if (!rc) {
					u32val |= value;
					pci_write_config_dword(pdev, where,
							       u32val);
				}
			}
			if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) {
				rc = pci_read_config_dword(pdev, where,
							   &u32val);
				if (!rc) {
					u32val &= ~value;
					pci_write_config_dword(pdev, where,
							       u32val);
				}
			}
		}
	} else
		/* All other opecodes are illegal for now */
		goto error_out;

	return nbytes;
error_out:
	memset(&idiag, 0, sizeof(idiag));
	return -EINVAL;
}

/**
 * lpfc_idiag_baracc_read - idiag debugfs pci bar access read
 * @file: The file pointer to read from.
 * @buf: The buffer to copy the data to.
 * @nbytes: The number of bytes to read.
 * @ppos: The position in the file to start reading from.
 *
 * Description:
 * This routine reads data from the @phba pci bar memory mapped space
 * according to the idiag command, and copies to user @buf.
 *
 * Returns:
 * This function returns the amount of data that was read (this could be less
 * than @nbytes if the end of the file was reached) or a negative error value.
 **/
static ssize_t
lpfc_idiag_baracc_read(struct file *file, char __user *buf, size_t nbytes,
		       loff_t *ppos)
{
	struct lpfc_debug *debug = file->private_data;
	struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
	int offset_label, offset, offset_run, len = 0, index;
	int bar_num, acc_range, bar_size;
	char *pbuffer;
	void __iomem *mem_mapped_bar;
	uint32_t if_type;
	struct pci_dev *pdev;
	uint32_t u32val;

	pdev = phba->pcidev;
	if (!pdev)
		return 0;

	/* This is a user read operation */
	debug->op = LPFC_IDIAG_OP_RD;

	if (!debug->buffer)
		debug->buffer = kmalloc(LPFC_PCI_BAR_RD_BUF_SIZE, GFP_KERNEL);
	if (!debug->buffer)
		return 0;
	pbuffer = debug->buffer;

	if (*ppos)
		return 0;

	if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_RD) {
		bar_num   = idiag.cmd.data[IDIAG_BARACC_BAR_NUM_INDX];
		offset    = idiag.cmd.data[IDIAG_BARACC_OFF_SET_INDX];
		acc_range = idiag.cmd.data[IDIAG_BARACC_ACC_MOD_INDX];
		bar_size = idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX];
	} else
		return 0;

	if (acc_range == 0)
		return 0;

	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
	if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
		if (bar_num == IDIAG_BARACC_BAR_0)
			mem_mapped_bar = phba->sli4_hba.conf_regs_memmap_p;
		else if (bar_num == IDIAG_BARACC_BAR_1)
			mem_mapped_bar = phba->sli4_hba.ctrl_regs_memmap_p;
		else if (bar_num == IDIAG_BARACC_BAR_2)
			mem_mapped_bar = phba->sli4_hba.drbl_regs_memmap_p;
		else
			return 0;
	} else if (if_type == LPFC_SLI_INTF_IF_TYPE_2) {
		if (bar_num == IDIAG_BARACC_BAR_0)
			mem_mapped_bar = phba->sli4_hba.conf_regs_memmap_p;
		else
			return 0;
	} else
		return 0;

	/* Read single PCI bar space register */
	if (acc_range == SINGLE_WORD) {
		offset_run = offset;
		u32val = readl(mem_mapped_bar + offset_run);
		len += snprintf(pbuffer+len, LPFC_PCI_BAR_RD_BUF_SIZE-len,
				"%05x: %08x\n", offset_run, u32val);
	} else
		goto baracc_browse;

	return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);

baracc_browse:

	/* Browse all PCI bar space registers */
	offset_label = idiag.offset.last_rd;
	offset_run = offset_label;

	/* Read PCI bar memory mapped space */
	len += snprintf(pbuffer+len, LPFC_PCI_BAR_RD_BUF_SIZE-len,
			"%05x: ", offset_label);
	index = LPFC_PCI_BAR_RD_SIZE;
	while (index > 0) {
		u32val = readl(mem_mapped_bar + offset_run);
		len += snprintf(pbuffer+len, LPFC_PCI_BAR_RD_BUF_SIZE-len,
				"%08x ", u32val);
		offset_run += sizeof(uint32_t);
		if (acc_range == LPFC_PCI_BAR_BROWSE) {
			if (offset_run >= bar_size) {
				len += snprintf(pbuffer+len,
					LPFC_PCI_BAR_RD_BUF_SIZE-len, "\n");
				break;
			}
		} else {
			if (offset_run >= offset +
			    (acc_range * sizeof(uint32_t))) {
				len += snprintf(pbuffer+len,
					LPFC_PCI_BAR_RD_BUF_SIZE-len, "\n");
				break;
			}
		}
		index -= sizeof(uint32_t);
		if (!index)
			len += snprintf(pbuffer+len,
					LPFC_PCI_BAR_RD_BUF_SIZE-len, "\n");
		else if (!(index % (8 * sizeof(uint32_t)))) {
			offset_label += (8 * sizeof(uint32_t));
			len += snprintf(pbuffer+len,
					LPFC_PCI_BAR_RD_BUF_SIZE-len,
					"\n%05x: ", offset_label);
		}
	}

	/* Set up the offset for next portion of pci bar read */
	if (index == 0) {
		idiag.offset.last_rd += LPFC_PCI_BAR_RD_SIZE;
		if (acc_range == LPFC_PCI_BAR_BROWSE) {
			if (idiag.offset.last_rd >= bar_size)
				idiag.offset.last_rd = 0;
		} else {
			if (offset_run >= offset +
			    (acc_range * sizeof(uint32_t)))
				idiag.offset.last_rd = offset;
		}
	} else {
		if (acc_range == LPFC_PCI_BAR_BROWSE)
			idiag.offset.last_rd = 0;
		else
			idiag.offset.last_rd = offset;
	}

	return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
}

/**
 * lpfc_idiag_baracc_write - Syntax check and set up idiag bar access commands
 * @file: The file pointer to read from.
 * @buf: The buffer to copy the user data from.
 * @nbytes: The number of bytes to get.
 * @ppos: The position in the file to start reading from.
 *
 * This routine get the debugfs idiag command struct from user space and
 * then perform the syntax check for PCI bar memory mapped space read or
 * write command accordingly. In the case of PCI bar memory mapped space
 * read command, it sets up the command in the idiag command struct for
 * the debugfs read operation. In the case of PCI bar memorpy mapped space
 * write operation, it executes the write operation into the PCI bar memory
 * mapped space accordingly.
 *
 * It returns the @nbytges passing in from debugfs user space when successful.
 * In case of error conditions, it returns proper error code back to the user
 * space.
 */
static ssize_t
lpfc_idiag_baracc_write(struct file *file, const char __user *buf,
			size_t nbytes, loff_t *ppos)
{
	struct lpfc_debug *debug = file->private_data;
	struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
	uint32_t bar_num, bar_size, offset, value, acc_range;
	struct pci_dev *pdev;
	void __iomem *mem_mapped_bar;
	uint32_t if_type;
	uint32_t u32val;
	int rc;

	pdev = phba->pcidev;
	if (!pdev)
		return -EFAULT;

	/* This is a user write operation */
	debug->op = LPFC_IDIAG_OP_WR;

	rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd);
	if (rc < 0)
		return rc;

	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
	bar_num = idiag.cmd.data[IDIAG_BARACC_BAR_NUM_INDX];

	if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
		if ((bar_num != IDIAG_BARACC_BAR_0) &&
		    (bar_num != IDIAG_BARACC_BAR_1) &&
		    (bar_num != IDIAG_BARACC_BAR_2))
			goto error_out;
	} else if (if_type == LPFC_SLI_INTF_IF_TYPE_2) {
		if (bar_num != IDIAG_BARACC_BAR_0)
			goto error_out;
	} else
		goto error_out;

	if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
		if (bar_num == IDIAG_BARACC_BAR_0) {
			idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX] =
				LPFC_PCI_IF0_BAR0_SIZE;
			mem_mapped_bar = phba->sli4_hba.conf_regs_memmap_p;
		} else if (bar_num == IDIAG_BARACC_BAR_1) {
			idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX] =
				LPFC_PCI_IF0_BAR1_SIZE;
			mem_mapped_bar = phba->sli4_hba.ctrl_regs_memmap_p;
		} else if (bar_num == IDIAG_BARACC_BAR_2) {
			idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX] =
				LPFC_PCI_IF0_BAR2_SIZE;
			mem_mapped_bar = phba->sli4_hba.drbl_regs_memmap_p;
		} else
			goto error_out;
	} else if (if_type == LPFC_SLI_INTF_IF_TYPE_2) {
		if (bar_num == IDIAG_BARACC_BAR_0) {
			idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX] =
				LPFC_PCI_IF2_BAR0_SIZE;
			mem_mapped_bar = phba->sli4_hba.conf_regs_memmap_p;
		} else
			goto error_out;
	} else
		goto error_out;

	offset = idiag.cmd.data[IDIAG_BARACC_OFF_SET_INDX];
	if (offset % sizeof(uint32_t))
		goto error_out;

	bar_size = idiag.cmd.data[IDIAG_BARACC_BAR_SZE_INDX];