/*******************************************************************
 * This file is part of the Emulex Linux Device Driver for         *
 * Fibre Channel Host Bus Adapters.                                *
 * Copyright (C) 2017-2019 Broadcom. All Rights Reserved. The term *
 * “Broadcom” refers to Broadcom Inc. 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 <linux/vmalloc.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 +=  scnprintf(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 +=  scnprintf(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 +=  scnprintf(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 +=  scnprintf(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 +=  scnprintf(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 +=  scnprintf(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 +=  scnprintf(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 +=  scnprintf(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 +=  scnprintf(buf + len, size - len,
						"Unused\n");
				goto skipit;
			}
		}
		else {
			if ((j >= hbqs->hbqPutIdx) &&
				(j < (hbqs->entry_count+low))) {
				len +=  scnprintf(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 +=  scnprintf(buf+len, size-len,
					"Buf%d: x%px %06x\n", i,
					hbq_buf->dbuf.virt, hbq_buf->tag);
				found = 1;
				break;
			}
			i++;
		}
		if (!found) {
			len +=  scnprintf(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_xripool;

/**
 * lpfc_debugfs_common_xri_data - Dump Hardware 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 Hardware Queue info from the @phba to @buf up to
 * @size number of bytes. A header that describes the current hdwq state will be
 * dumped to @buf first and then info on each hdwq entry will be dumped to @buf
 * until @size bytes have been dumped or all the hdwq info has been dumped.
 *
 * Notes:
 * This routine will rotate through each configured Hardware Queue 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_commonxripools_data(struct lpfc_hba *phba, char *buf, int size)
{
	struct lpfc_sli4_hdw_queue *qp;
	int len = 0;
	int i, out;
	unsigned long iflag;

	for (i = 0; i < phba->cfg_hdw_queue; i++) {
		if (len > (LPFC_DUMP_MULTIXRIPOOL_SIZE - 80))
			break;
		qp = &phba->sli4_hba.hdwq[lpfc_debugfs_last_xripool];

		len += scnprintf(buf + len, size - len, "HdwQ %d Info ", i);
		spin_lock_irqsave(&qp->abts_io_buf_list_lock, iflag);
		spin_lock(&qp->io_buf_list_get_lock);
		spin_lock(&qp->io_buf_list_put_lock);
		out = qp->total_io_bufs - (qp->get_io_bufs + qp->put_io_bufs +
			qp->abts_scsi_io_bufs + qp->abts_nvme_io_bufs);
		len += scnprintf(buf + len, size - len,
				 "tot:%d get:%d put:%d mt:%d "
				 "ABTS scsi:%d nvme:%d Out:%d\n",
			qp->total_io_bufs, qp->get_io_bufs, qp->put_io_bufs,
			qp->empty_io_bufs, qp->abts_scsi_io_bufs,
			qp->abts_nvme_io_bufs, out);
		spin_unlock(&qp->io_buf_list_put_lock);
		spin_unlock(&qp->io_buf_list_get_lock);
		spin_unlock_irqrestore(&qp->abts_io_buf_list_lock, iflag);

		lpfc_debugfs_last_xripool++;
		if (lpfc_debugfs_last_xripool >= phba->cfg_hdw_queue)
			lpfc_debugfs_last_xripool = 0;
	}

	return len;
}

/**
 * lpfc_debugfs_multixripools_data - Display multi-XRI pools information
 * @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 displays current multi-XRI pools information including XRI
 * count in public, private and txcmplq. It also displays current high and
 * low watermark.
 *
 * Return Value:
 * This routine returns the amount of bytes that were dumped into @buf and will
 * not exceed @size.
 **/
static int
lpfc_debugfs_multixripools_data(struct lpfc_hba *phba, char *buf, int size)
{
	u32 i;
	u32 hwq_count;
	struct lpfc_sli4_hdw_queue *qp;
	struct lpfc_multixri_pool *multixri_pool;
	struct lpfc_pvt_pool *pvt_pool;
	struct lpfc_pbl_pool *pbl_pool;
	u32 txcmplq_cnt;
	char tmp[LPFC_DEBUG_OUT_LINE_SZ] = {0};

	if (phba->sli_rev != LPFC_SLI_REV4)
		return 0;

	if (!phba->sli4_hba.hdwq)
		return 0;

	if (!phba->cfg_xri_rebalancing) {
		i = lpfc_debugfs_commonxripools_data(phba, buf, size);
		return i;
	}

	/*
	 * Pbl: Current number of free XRIs in public pool
	 * Pvt: Current number of free XRIs in private pool
	 * Busy: Current number of outstanding XRIs
	 * HWM: Current high watermark
	 * pvt_empty: Incremented by 1 when IO submission fails (no xri)
	 * pbl_empty: Incremented by 1 when all pbl_pool are empty during
	 *            IO submission
	 */
	scnprintf(tmp, sizeof(tmp),
		  "HWQ:  Pbl  Pvt Busy  HWM |  pvt_empty  pbl_empty ");
	if (strlcat(buf, tmp, size) >= size)
		return strnlen(buf, size);

#ifdef LPFC_MXP_STAT
	/*
	 * MAXH: Max high watermark seen so far
	 * above_lmt: Incremented by 1 if xri_owned > xri_limit during
	 *            IO submission
	 * below_lmt: Incremented by 1 if xri_owned <= xri_limit  during
	 *            IO submission
	 * locPbl_hit: Incremented by 1 if successfully get a batch of XRI from
	 *             local pbl_pool
	 * othPbl_hit: Incremented by 1 if successfully get a batch of XRI from
	 *             other pbl_pool
	 */
	scnprintf(tmp, sizeof(tmp),
		  "MAXH  above_lmt  below_lmt locPbl_hit othPbl_hit");
	if (strlcat(buf, tmp, size) >= size)
		return strnlen(buf, size);

	/*
	 * sPbl: snapshot of Pbl 15 sec after stat gets cleared
	 * sPvt: snapshot of Pvt 15 sec after stat gets cleared
	 * sBusy: snapshot of Busy 15 sec after stat gets cleared
	 */
	scnprintf(tmp, sizeof(tmp),
		  " | sPbl sPvt sBusy");
	if (strlcat(buf, tmp, size) >= size)
		return strnlen(buf, size);
#endif

	scnprintf(tmp, sizeof(tmp), "\n");
	if (strlcat(buf, tmp, size) >= size)
		return strnlen(buf, size);

	hwq_count = phba->cfg_hdw_queue;
	for (i = 0; i < hwq_count; i++) {
		qp = &phba->sli4_hba.hdwq[i];
		multixri_pool = qp->p_multixri_pool;
		if (!multixri_pool)
			continue;
		pbl_pool = &multixri_pool->pbl_pool;
		pvt_pool = &multixri_pool->pvt_pool;
		txcmplq_cnt = qp->io_wq->pring->txcmplq_cnt;

		scnprintf(tmp, sizeof(tmp),
			  "%03d: %4d %4d %4d %4d | %10d %10d ",
			  i, pbl_pool->count, pvt_pool->count,
			  txcmplq_cnt, pvt_pool->high_watermark,
			  qp->empty_io_bufs, multixri_pool->pbl_empty_count);
		if (strlcat(buf, tmp, size) >= size)
			break;

#ifdef LPFC_MXP_STAT
		scnprintf(tmp, sizeof(tmp),
			  "%4d %10d %10d %10d %10d",
			  multixri_pool->stat_max_hwm,
			  multixri_pool->above_limit_count,
			  multixri_pool->below_limit_count,
			  multixri_pool->local_pbl_hit_count,
			  multixri_pool->other_pbl_hit_count);
		if (strlcat(buf, tmp, size) >= size)
			break;

		scnprintf(tmp, sizeof(tmp),
			  " | %4d %4d %5d",
			  multixri_pool->stat_pbl_count,
			  multixri_pool->stat_pvt_count,
			  multixri_pool->stat_busy_count);
		if (strlcat(buf, tmp, size) >= size)
			break;
#endif

		scnprintf(tmp, sizeof(tmp), "\n");
		if (strlcat(buf, tmp, size) >= size)
			break;
	}
	return strnlen(buf, size);
}


#ifdef LPFC_HDWQ_LOCK_STAT
static int lpfc_debugfs_last_lock;

/**
 * lpfc_debugfs_lockstat_data - Dump Hardware 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 Hardware Queue info from the @phba to @buf up to
 * @size number of bytes. A header that describes the current hdwq state will be
 * dumped to @buf first and then info on each hdwq entry will be dumped to @buf
 * until @size bytes have been dumped or all the hdwq info has been dumped.
 *
 * Notes:
 * This routine will rotate through each configured Hardware Queue 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_lockstat_data(struct lpfc_hba *phba, char *buf, int size)
{
	struct lpfc_sli4_hdw_queue *qp;
	int len = 0;
	int i;

	if (phba->sli_rev != LPFC_SLI_REV4)
		return 0;

	if (!phba->sli4_hba.hdwq)
		return 0;

	for (i = 0; i < phba->cfg_hdw_queue; i++) {
		if (len > (LPFC_HDWQINFO_SIZE - 100))
			break;
		qp = &phba->sli4_hba.hdwq[lpfc_debugfs_last_lock];

		len += scnprintf(buf + len, size - len, "HdwQ %03d Lock ", i);
		if (phba->cfg_xri_rebalancing) {
			len += scnprintf(buf + len, size - len,
					 "get_pvt:%d mv_pvt:%d "
					 "mv2pub:%d mv2pvt:%d "
					 "put_pvt:%d put_pub:%d wq:%d\n",
					 qp->lock_conflict.alloc_pvt_pool,
					 qp->lock_conflict.mv_from_pvt_pool,
					 qp->lock_conflict.mv_to_pub_pool,
					 qp->lock_conflict.mv_to_pvt_pool,
					 qp->lock_conflict.free_pvt_pool,
					 qp->lock_conflict.free_pub_pool,
					 qp->lock_conflict.wq_access);
		} else {
			len += scnprintf(buf + len, size - len,
					 "get:%d put:%d free:%d wq:%d\n",
					 qp->lock_conflict.alloc_xri_get,
					 qp->lock_conflict.alloc_xri_put,
					 qp->lock_conflict.free_xri,
					 qp->lock_conflict.wq_access);
		}

		lpfc_debugfs_last_lock++;
		if (lpfc_debugfs_last_lock >= phba->cfg_hdw_queue)
			lpfc_debugfs_last_lock = 0;
	}

	return len;
}
#endif

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 +=  scnprintf(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 +=  scnprintf(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 +=  scnprintf(buf+len, size-len, "SLIM Mailbox\n");
	ptr = (uint32_t *)phba->slim2p.virt;
	i = sizeof(MAILBOX_t);
	while (i > 0) {
		len +=  scnprintf(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 +=  scnprintf(buf+len, size-len, "SLIM PCB\n");
	ptr = (uint32_t *)phba->pcb;
	i = sizeof(PCB_t);
	while (i > 0) {
		len +=  scnprintf(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 +=  scnprintf(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 +=  scnprintf(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 i, iocnt, outio, 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 nvme_fc_remote_port *nrport = NULL;
	struct lpfc_nvme_rport *rport;

	cnt = (LPFC_NODELIST_SIZE / LPFC_NODELIST_ENTRY_SIZE);
	outio = 0;

	len += scnprintf(buf+len, size-len, "\nFCP Nodelist Entries ...\n");
	spin_lock_irq(shost->host_lock);
	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
		iocnt = 0;
		if (!cnt) {
			len +=  scnprintf(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 ";
			iocnt = 1;
			break;
		case NLP_STE_MAPPED_NODE:
			statep = "MAPPED";
			iocnt = 1;
			break;
		case NLP_STE_NPR_NODE:
			statep = "NPR   ";
			break;
		default:
			statep = "UNKNOWN";
		}
		len += scnprintf(buf+len, size-len, "%s DID:x%06x ",
				statep, ndlp->nlp_DID);
		len += scnprintf(buf+len, size-len,
				"WWPN x%llx ",
				wwn_to_u64(ndlp->nlp_portname.u.wwn));
		len += scnprintf(buf+len, size-len,
				"WWNN x%llx ",
				wwn_to_u64(ndlp->nlp_nodename.u.wwn));
		if (ndlp->nlp_flag & NLP_RPI_REGISTERED)
			len += scnprintf(buf+len, size-len, "RPI:%03d ",
					ndlp->nlp_rpi);
		else
			len += scnprintf(buf+len, size-len, "RPI:none ");
		len +=  scnprintf(buf+len, size-len, "flag:x%08x ",
			ndlp->nlp_flag);
		if (!ndlp->nlp_type)
			len += scnprintf(buf+len, size-len, "UNKNOWN_TYPE ");
		if (ndlp->nlp_type & NLP_FC_NODE)
			len += scnprintf(buf+len, size-len, "FC_NODE ");
		if (ndlp->nlp_type & NLP_FABRIC) {
			len += scnprintf(buf+len, size-len, "FABRIC ");
			iocnt = 0;
		}
		if (ndlp->nlp_type & NLP_FCP_TARGET)
			len += scnprintf(buf+len, size-len, "FCP_TGT sid:%d ",
				ndlp->nlp_sid);
		if (ndlp->nlp_type & NLP_FCP_INITIATOR)
			len += scnprintf(buf+len, size-len, "FCP_INITIATOR ");
		if (ndlp->nlp_type & NLP_NVME_TARGET)
			len += scnprintf(buf + len,
					size - len, "NVME_TGT sid:%d ",
					NLP_NO_SID);
		if (ndlp->nlp_type & NLP_NVME_INITIATOR)
			len += scnprintf(buf + len,
					size - len, "NVME_INITIATOR ");
		len += scnprintf(buf+len, size-len, "usgmap:%x ",
			ndlp->nlp_usg_map);
		len += scnprintf(buf+len, size-len, "refcnt:%x",
			kref_read(&ndlp->kref));
		if (iocnt) {
			i = atomic_read(&ndlp->cmd_pending);
			len += scnprintf(buf + len, size - len,
					" OutIO:x%x Qdepth x%x",
					i, ndlp->cmd_qdepth);
			outio += i;
		}
		len += scnprintf(buf + len, size - len, "defer:%x ",
			ndlp->nlp_defer_did);
		len +=  scnprintf(buf+len, size-len, "\n");
	}
	spin_unlock_irq(shost->host_lock);

	len += scnprintf(buf + len, size - len,
			"\nOutstanding IO x%x\n",  outio);

	if (phba->nvmet_support && phba->targetport && (vport == phba->pport)) {
		len += scnprintf(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 += scnprintf(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 += scnprintf(buf + len, size - len,
				"    Targetport DID x%06x\n",
				phba->targetport->port_id);
		goto out_exit;
	}

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

	len += scnprintf(buf + len, size - len, "\tRport List:\n");
	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
		/* local short-hand pointer. */
		spin_lock(&phba->hbalock);
		rport = lpfc_ndlp_get_nrport(ndlp);
		if (rport)
			nrport = rport->remoteport;
		else
			nrport = NULL;
		spin_unlock(&phba->hbalock);
		if (!nrport)
			continue;

		/* 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 += scnprintf(buf + len, size - len,
				"\t%s Port ID:x%06x ",
				statep, nrport->port_id);
		len += scnprintf(buf + len, size - len, "WWPN x%llx ",
				nrport->port_name);
		len += scnprintf(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 +=  scnprintf(buf + len, size - len,
					 "INITIATOR ");
		if (nrport->port_role & FC_PORT_ROLE_NVME_TARGET)
			len +=  scnprintf(buf + len, size - len,
					 "TARGET ");
		if (nrport->port_role & FC_PORT_ROLE_NVME_DISCOVERY)
			len +=  scnprintf(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 +=  scnprintf(buf + len, size - len,
					 "UNKNOWN ROLE x%x",
					 nrport->port_role);
		/* Terminate the string. */
		len +=  scnprintf(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;
	struct nvme_fc_local_port *localport;
	struct lpfc_fc4_ctrl_stat *cstat;
	struct lpfc_nvme_lport *lport;
	uint64_t data1, data2, data3;
	uint64_t tot, totin, totout;
	int cnt, i;
	int len = 0;

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

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

		len += scnprintf(buf + len, size - len,
				"LS: RSP Abort %08x xb %08x Err %08x\n",
				atomic_read(&tgtp->xmt_ls_rsp_aborted),
				atomic_read(&tgtp->xmt_ls_rsp_xb_set),
				atomic_read(&tgtp->xmt_ls_rsp_error));

		len += scnprintf(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 += scnprintf(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 += scnprintf(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 += scnprintf(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 += scnprintf(buf + len, size - len,
				"FCP Rsp Abort: %08x xb %08x xricqe  %08x\n",
				atomic_read(&tgtp->xmt_fcp_rsp_aborted),
				atomic_read(&tgtp->xmt_fcp_rsp_xb_set),
				atomic_read(&tgtp->xmt_fcp_xri_abort_cqe));

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

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

		cnt = 0;
		spin_lock(&phba->sli4_hba.abts_nvmet_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_nvmet_buf_list_lock);
		if (cnt) {
			len += scnprintf(buf + len, size - len,
					"ABORT: %d ctx entries\n", cnt);
			spin_lock(&phba->sli4_hba.abts_nvmet_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 += scnprintf(buf + len, size - len,
						"Entry: oxid %x state %x "
						"flag %x\n",
						ctxp->oxid, ctxp->state,
						ctxp->flag);
			}
			spin_unlock(&phba->sli4_hba.abts_nvmet_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 += scnprintf(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 (!(vport->cfg_enable_fc4_type & LPFC_ENABLE_NVME))
			return len;

		localport = vport->localport;
		if (!localport)
			return len;
		lport = (struct lpfc_nvme_lport *)localport->private;
		if (!lport)
			return len;

		len += scnprintf(buf + len, size - len,
				"\nNVME HDWQ Statistics\n");

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

		totin = 0;
		totout = 0;
		for (i = 0; i < phba->cfg_hdw_queue; i++) {
			cstat = &phba->sli4_hba.hdwq[i].nvme_cstat;
			tot = cstat->io_cmpls;
			totin += tot;
			data1 = cstat->input_requests;
			data2 = cstat->output_requests;
			data3 = cstat->control_requests;
			totout += (data1 + data2 + data3);

			/* Limit to 32, debugfs display buffer limitation */
			if (i >= 32)
				continue;

			len += scnprintf(buf + len, PAGE_SIZE - len,
					"HDWQ (%d): Rd %016llx Wr %016llx "
					"IO %016llx ",
					i, data1, data2, data3);
			len += scnprintf(buf + len, PAGE_SIZE - len,
					"Cmpl %016llx OutIO %016llx\n",
					tot, ((data1 + data2 + data3) - tot));
		}
		len += scnprintf(buf + len, PAGE_SIZE - len,
				"Total FCP Cmpl %016llx Issue %016llx "
				"OutIO %016llx\n",
				totin, totout, totout - totin);

		len += scnprintf(buf + len, size - len,
				"LS Xmt Err: Abrt %08x Err %08x  "
				"Cmpl Err: xb %08x Err %08x\n",
				atomic_read(&lport->xmt_ls_abort),
				atomic_read(&lport->xmt_ls_err),
				atomic_read(&lport->cmpl_ls_xb),
				atomic_read(&lport->cmpl_ls_err));

		len += scnprintf(buf + len, size - len,
				"FCP Xmt Err: noxri %06x nondlp %06x "
				"qdepth %06x wqerr %06x err %06x Abrt %06x\n",
				atomic_read(&lport->xmt_fcp_noxri),
				atomic_read(&lport->xmt_fcp_bad_ndlp),
				atomic_read(&lport->xmt_fcp_qdepth),
				atomic_read(&lport->xmt_fcp_wqerr),
				atomic_read(&lport->xmt_fcp_err),
				atomic_read(&lport->xmt_fcp_abort));

		len += scnprintf(buf + len, size - len,
				"FCP Cmpl Err: xb %08x Err %08x\n",
				atomic_read(&lport->cmpl_fcp_xb),
				atomic_read(&lport->cmpl_fcp_err));

	}

	return len;
}

/**
 * lpfc_debugfs_scsistat_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 SCSI 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_scsistat_data(struct lpfc_vport *vport, char *buf, int size)
{
	int len;
	struct lpfc_hba *phba = vport->phba;
	struct lpfc_fc4_ctrl_stat *cstat;
	u64 data1, data2, data3;
	u64 tot, totin, totout;
	int i;
	char tmp[LPFC_MAX_SCSI_INFO_TMP_LEN] = {0};

	if (!(vport->cfg_enable_fc4_type & LPFC_ENABLE_FCP) ||
	    (phba->sli_rev != LPFC_SLI_REV4))
		return 0;

	scnprintf(buf, size, "SCSI HDWQ Statistics\n");

	totin = 0;
	totout = 0;
	for (i = 0; i < phba->cfg_hdw_queue; i++) {
		cstat = &phba->sli4_hba.hdwq[i].scsi_cstat;
		tot = cstat->io_cmpls;
		totin += tot;
		data1 = cstat->input_requests;
		data2 = cstat->output_requests;
		data3 = cstat->control_requests;
		totout += (data1 + data2 + data3);

		scnprintf(tmp, sizeof(tmp), "HDWQ (%d): Rd %016llx Wr %016llx "
			  "IO %016llx ", i, data1, data2, data3);
		if (strlcat(buf, tmp, size) >= size)
			goto buffer_done;

		scnprintf(tmp, sizeof(tmp), "Cmpl %016llx OutIO %016llx\n",
			  tot, ((data1 + data2 + data3) - tot));
		if (strlcat(buf, tmp, size) >= size)
			goto buffer_done;
	}
	scnprintf(tmp, sizeof(tmp), "Total FCP Cmpl %016llx Issue %016llx "
		  "OutIO %016llx\n", totin, totout, totout - totin);
	strlcat(buf, tmp, size);

buffer_done:
	len = strnlen(buf, size);

	return len;
}

void
lpfc_io_ktime(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd)
{
	uint64_t seg1, seg2, seg3, seg4;
	uint64_t segsum;

	if (!lpfc_cmd->ts_last_cmd ||
	    !lpfc_cmd->ts_cmd_start ||
	    !lpfc_cmd->ts_cmd_wqput ||
	    !lpfc_cmd->ts_isr_cmpl ||
	    !lpfc_cmd->ts_data_io)
		return;

	if (lpfc_cmd->ts_data_io < lpfc_cmd->ts_cmd_start)
		return;
	if (lpfc_cmd->ts_cmd_start < lpfc_cmd->ts_last_cmd)
		return;
	if (lpfc_cmd->ts_cmd_wqput < lpfc_cmd->ts_cmd_start)
		return;
	if (lpfc_cmd->ts_isr_cmpl < lpfc_cmd->ts_cmd_wqput)
		return;
	if (lpfc_cmd->ts_data_io < lpfc_cmd->ts_isr_cmpl)
		return;
	/*
	 * Segment 1 - Time from Last FCP command cmpl is handed
	 * off to NVME Layer to start of next command.
	 * Segment 2 - Time from Driver receives a IO cmd start
	 * from NVME Layer to WQ put is done on IO cmd.
	 * Segment 3 - Time from Driver WQ put is done on IO cmd
	 * to MSI-X ISR for IO cmpl.
	 * Segment 4 - Time from MSI-X ISR for IO cmpl to when
	 * cmpl is handled off to the NVME Layer.
	 */
	seg1 = lpfc_cmd->ts_cmd_start - lpfc_cmd->ts_last_cmd;
	if (seg1 > 5000000)  /* 5 ms - for sequential IOs only */
		seg1 = 0;

	/* Calculate times relative to start of IO */
	seg2 = (lpfc_cmd->ts_cmd_wqput - lpfc_cmd->ts_cmd_start);
	segsum = seg2;
	seg3 = lpfc_cmd->ts_isr_cmpl - lpfc_cmd->ts_cmd_start;
	if (segsum > seg3)
		return;
	seg3 -= segsum;
	segsum += seg3;

	seg4 = lpfc_cmd->ts_data_io - lpfc_cmd->ts_cmd_start;
	if (segsum > seg4)
		return;
	seg4 -= segsum;

	phba->ktime_data_samples++;
	phba->ktime_seg1_total += seg1;
	if (seg1 < phba->ktime_seg1_min)
		phba->ktime_seg1_min = seg1;
	else if (seg1 > phba->ktime_seg1_max)
		phba->ktime_seg1_max = seg1;
	phba->ktime_seg2_total += seg2;
	if (seg2 < phba->ktime_seg2_min)
		phba->ktime_seg2_min = seg2;
	else if (seg2 > phba->ktime_seg2_max)
		phba->ktime_seg2_max = seg2;
	phba->ktime_seg3_total += seg3;
	if (seg3 < phba->ktime_seg3_min)
		phba->ktime_seg3_min = seg3;
	else if (seg3 > phba->ktime_seg3_max)
		phba->ktime_seg3_max = seg3;
	phba->ktime_seg4_total += seg4;
	if (seg4 < phba->ktime_seg4_min)
		phba->ktime_seg4_min = seg4;
	else if (seg4 > phba->ktime_seg4_max)
		phba->ktime_seg4_max = seg4;

	lpfc_cmd->ts_last_cmd = 0;
	lpfc_cmd->ts_cmd_start = 0;
	lpfc_cmd->ts_cmd_wqput  = 0;
	lpfc_cmd->ts_isr_cmpl = 0;
	lpfc_cmd->ts_data_io = 0;
}

/**
 * lpfc_debugfs_ioktime_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_ioktime_data(struct lpfc_vport *vport, char *buf, int size)
{
	struct lpfc_hba   *phba = vport->phba;
	int len = 0;

	if (phba->nvmet_support == 0) {
		/* Initiator */
		len += scnprintf(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 += scnprintf(
			buf + len, PAGE_SIZE - len,
			"Segment 1: Last Cmd cmpl "
			"done -to- Start of next Cmd (in driver)\n");
		len += scnprintf(
			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 += scnprintf(
			buf + len, PAGE_SIZE - len,
			"Segment 2: Driver start of Cmd "
			"-to- Firmware WQ doorbell\n");
		len += scnprintf(
			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 += scnprintf(
			buf + len, PAGE_SIZE - len,
			"Segment 3: Firmware WQ doorbell -to- "
			"MSI-X ISR cmpl\n");
		len += scnprintf(
			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 += scnprintf(
			buf + len, PAGE_SIZE - len,
			"Segment 4: MSI-X ISR cmpl -to- "
			"Cmd cmpl done\n");
		len += scnprintf(
			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 += scnprintf(
			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 += scnprintf(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 += scnprintf(buf + len, PAGE_SIZE-len,
			"Segment 1: MSI-X ISR Rcv cmd -to- "
			"cmd pass to NVME Layer\n");
	len += scnprintf(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 += scnprintf(buf + len, PAGE_SIZE-len,
			"Segment 2: cmd pass to NVME Layer- "
			"-to- Driver rcv cmd OP (action)\n");
	len += scnprintf(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 += scnprintf(buf + len, PAGE_SIZE-len,
			"Segment 3: Driver rcv cmd OP -to- "
			"Firmware WQ doorbell: cmd\n");
	len += scnprintf(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 += scnprintf(buf + len, PAGE_SIZE-len,
			"Segment 4: Firmware WQ doorbell: cmd "
			"-to- MSI-X ISR for cmd cmpl\n");
	len += scnprintf(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 += scnprintf(buf + len, PAGE_SIZE-len,
			"Segment 5: MSI-X ISR for cmd cmpl "
			"-to- NVME layer passed cmd done\n");
	len += scnprintf(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 += scnprintf(buf + len, PAGE_SIZE-len,
				"Total: cmd received by MSI-X ISR "
				"-to- cmd completed on wire\n");
		len += scnprintf(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 += scnprintf(buf + len, PAGE_SIZE-len,
			"Segment 6: NVME layer passed cmd done "
			"-to- Driver rcv rsp status OP\n");
	len += scnprintf(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 += scnprintf(buf + len, PAGE_SIZE-len,
			"Segment 7: Driver rcv rsp status OP "
			"-to- Firmware WQ doorbell: status\n");
	len += scnprintf(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 += scnprintf(buf + len, PAGE_SIZE-len,
			"Segment 8: Firmware WQ doorbell: status"
			" -to- MSI-X ISR for status cmpl\n");
	len += scnprintf(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 += scnprintf(buf + len, PAGE_SIZE-len,
			"Segment 9: MSI-X ISR for status cmpl  "
			"-to- NVME layer passed status done\n");
	len += scnprintf(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 += scnprintf(buf + len, PAGE_SIZE-len,
			"Total: cmd received by MSI-X ISR -to- "
			"cmd completed on wire\n");
	len += scnprintf(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 += scnprintf(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 +=  scnprintf(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 += scnprintf(buf + len, size - len,
					"Trace Complete\n");
			goto out;
		}

		if (len >= (size - LPFC_DEBUG_OUT_LINE_SZ)) {
			len += scnprintf(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 < in…