lpfc_debugfs.c 168.9 KB
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/*******************************************************************
 * This file is part of the Emulex Linux Device Driver for         *
 * Fibre Channel Host Bus Adapters.                                *
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 * Copyright (C) 2017-2018 Broadcom. All Rights Reserved. The term *
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 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.  *
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 * Copyright (C) 2007-2015 Emulex.  All rights reserved.           *
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 * EMULEX and SLI are trademarks of Emulex.                        *
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 * www.broadcom.com                                                *
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 *                                                                 *
 * 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>
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#include <linux/module.h>
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#include <linux/dma-mapping.h>
#include <linux/idr.h>
#include <linux/interrupt.h>
#include <linux/kthread.h>
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#include <linux/slab.h>
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#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>
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#include <scsi/fc/fc_fs.h>

#include <linux/nvme-fc-driver.h>
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#include "lpfc_hw4.h"
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#include "lpfc_hw.h"
#include "lpfc_sli.h"
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#include "lpfc_sli4.h"
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#include "lpfc_nl.h"
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#include "lpfc_disc.h"
#include "lpfc.h"
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#include "lpfc_scsi.h"
#include "lpfc_nvme.h"
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#include "lpfc_nvmet.h"
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#include "lpfc_logmsg.h"
#include "lpfc_crtn.h"
#include "lpfc_vport.h"
#include "lpfc_version.h"
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#include "lpfc_compat.h"
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#include "lpfc_debugfs.h"
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#include "lpfc_bsg.h"
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#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
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/*
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 * debugfs interface
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 *
 * To access this interface the user should:
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 * # mount -t debugfs none /sys/kernel/debug
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 *
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 * The lpfc debugfs directory hierarchy is:
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 * /sys/kernel/debug/lpfc/fnX/vportY
 * where X is the lpfc hba function unique_id
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 * 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.
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 * See lpfc_debugfs.h for different categories of  discovery events.
 * To enable the discovery trace, the following module parameters must be set:
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 * 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 .
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 *
 * 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.
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 */
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static int lpfc_debugfs_enable = 1;
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module_param(lpfc_debugfs_enable, int, S_IRUGO);
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MODULE_PARM_DESC(lpfc_debugfs_enable, "Enable debugfs services");

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

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

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/* 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");

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

#include <linux/debugfs.h>

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static atomic_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0);
static unsigned long lpfc_debugfs_start_time = 0L;
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/* iDiag */
static struct lpfc_idiag idiag;

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/**
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 * lpfc_debugfs_disc_trc_data - Dump discovery logging to a buffer
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 * @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.
 **/
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static int
lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size)
{
	int i, index, len, enable;
	uint32_t ms;
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	struct lpfc_debugfs_trc *dtp;
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	char *buffer;

	buffer = kmalloc(LPFC_DEBUG_TRC_ENTRY_SIZE, GFP_KERNEL);
	if (!buffer)
		return 0;
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	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);
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		snprintf(buffer,
			LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
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			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);
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		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;
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	kfree(buffer);

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	return len;
}

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/**
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 * lpfc_debugfs_slow_ring_trc_data - Dump slow ring logging to a buffer
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 * @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.
 **/
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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;
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	char *buffer;
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	buffer = kmalloc(LPFC_DEBUG_TRC_ENTRY_SIZE, GFP_KERNEL);
	if (!buffer)
		return 0;
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	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",
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			dtp->seq_cnt, ms, dtp->fmt);
		len +=  snprintf(buf+len, size-len, buffer,
			dtp->data1, dtp->data2, dtp->data3);
	}

	lpfc_debugfs_enable = enable;
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	kfree(buffer);

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	return len;
}

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static int lpfc_debugfs_last_hbq = -1;
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/**
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 * lpfc_debugfs_hbqinfo_data - Dump host buffer queue info to a buffer
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 * @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.
 **/
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static int
lpfc_debugfs_hbqinfo_data(struct lpfc_hba *phba, char *buf, int size)
{
	int len = 0;
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	int i, j, found, posted, low;
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	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;

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

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	hbqs =  &phba->hbqs[i];
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	posted = 0;
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	list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list)
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		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,
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		"entries:%d bufcnt:%d Put:%d nPut:%d localGet:%d hbaGet:%d\n",
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		hbqs->entry_count, hbqs->buffer_count, hbqs->hbqPutIdx,
		hbqs->next_hbqPutIdx, hbqs->local_hbqGetIdx, getidx);
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	hbqe = (struct lpfc_hbq_entry *) phba->hbqs[i].hbq_virt;
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	for (j=0; j<hbqs->entry_count; j++) {
		len +=  snprintf(buf+len, size-len,
			"%03d: %08x %04x %05x ", j,
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			le32_to_cpu(hbqe->bde.addrLow),
			le32_to_cpu(hbqe->bde.tus.w),
			le32_to_cpu(hbqe->buffer_tag));
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		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 */
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		list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list) {
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			hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
			phys = ((uint64_t)hbq_buf->dbuf.phys & 0xffffffff);
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			if (phys == le32_to_cpu(hbqe->bde.addrLow)) {
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				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;
}

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static int lpfc_debugfs_last_hdwq;

/**
 * lpfc_debugfs_hdwqinfo_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_hdwqinfo_data(struct lpfc_hba *phba, char *buf, int size)
{
	struct lpfc_sli4_hdw_queue *qp;
	int len = 0;
	int i, out;
	unsigned long iflag;

	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 - 80))
			break;
		qp = &phba->sli4_hba.hdwq[lpfc_debugfs_last_hdwq];

		len +=  snprintf(buf + len, size - len, "HdwQ %d Info ", i);
		spin_lock_irqsave(&qp->abts_scsi_buf_list_lock, iflag);
		spin_lock(&qp->abts_nvme_buf_list_lock);
		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 +=  snprintf(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(&qp->abts_nvme_buf_list_lock);
		spin_unlock_irqrestore(&qp->abts_scsi_buf_list_lock, iflag);

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

	return len;
}

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static int lpfc_debugfs_last_hba_slim_off;

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/**
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 * lpfc_debugfs_dumpHBASlim_data - Dump HBA SLIM info to a buffer
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 * @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.
 **/
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static int
lpfc_debugfs_dumpHBASlim_data(struct lpfc_hba *phba, char *buf, int size)
{
	int len = 0;
	int i, off;
	uint32_t *ptr;
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	char *buffer;

	buffer = kmalloc(1024, GFP_KERNEL);
	if (!buffer)
		return 0;
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	off = 0;
	spin_lock_irq(&phba->hbalock);

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

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	return len;
}

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/**
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 * lpfc_debugfs_dumpHostSlim_data - Dump host SLIM info to a buffer
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 * @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.
 **/
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static int
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lpfc_debugfs_dumpHostSlim_data(struct lpfc_hba *phba, char *buf, int size)
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{
	int len = 0;
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	int i, off;
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	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");
542
	ptr = (uint32_t *)phba->slim2p.virt;
543 544 545 546 547 548 549 550 551 552 553 554
	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");
555
	ptr = (uint32_t *)phba->pcb;
556 557 558 559 560 561 562 563 564 565 566
	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));
	}

567
	if (phba->sli_rev <= LPFC_SLI_REV3) {
568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583
		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);
		}

584 585 586 587 588 589 590
		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);
	}
591 592 593 594
	spin_unlock_irq(&phba->hbalock);
	return len;
}

595
/**
596
 * lpfc_debugfs_nodelist_data - Dump target node list to a buffer
597 598 599 600 601 602 603 604 605 606 607 608 609
 * @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.
 **/
J
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610 611 612 613
static int
lpfc_debugfs_nodelist_data(struct lpfc_vport *vport, char *buf, int size)
{
	int len = 0;
614
	int i, iocnt, outio, cnt;
J
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615
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
616
	struct lpfc_hba  *phba = vport->phba;
J
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617
	struct lpfc_nodelist *ndlp;
J
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618
	unsigned char *statep;
619
	struct nvme_fc_local_port *localport;
620
	struct nvme_fc_remote_port *nrport = NULL;
621
	struct lpfc_nvme_rport *rport;
J
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622 623

	cnt = (LPFC_NODELIST_SIZE / LPFC_NODELIST_ENTRY_SIZE);
624
	outio = 0;
J
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625

626
	len += snprintf(buf+len, size-len, "\nFCP Nodelist Entries ...\n");
J
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627 628
	spin_lock_irq(shost->host_lock);
	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
629
		iocnt = 0;
J
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630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651
		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;
652 653 654
		case NLP_STE_LOGO_ISSUE:
			statep = "LOGO  ";
			break;
J
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655 656
		case NLP_STE_UNMAPPED_NODE:
			statep = "UNMAP ";
657
			iocnt = 1;
J
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658 659 660
			break;
		case NLP_STE_MAPPED_NODE:
			statep = "MAPPED";
661
			iocnt = 1;
J
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662 663 664 665 666 667 668
			break;
		case NLP_STE_NPR_NODE:
			statep = "NPR   ";
			break;
		default:
			statep = "UNKNOWN";
		}
J
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669 670 671 672 673 674 675 676
		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));
677
		if (ndlp->nlp_flag & NLP_RPI_REGISTERED)
J
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678 679
			len += snprintf(buf+len, size-len, "RPI:%03d ",
					ndlp->nlp_rpi);
680
		else
J
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681
			len += snprintf(buf+len, size-len, "RPI:none ");
682 683
		len +=  snprintf(buf+len, size-len, "flag:x%08x ",
			ndlp->nlp_flag);
J
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684
		if (!ndlp->nlp_type)
J
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685
			len += snprintf(buf+len, size-len, "UNKNOWN_TYPE ");
J
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686
		if (ndlp->nlp_type & NLP_FC_NODE)
J
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687
			len += snprintf(buf+len, size-len, "FC_NODE ");
688
		if (ndlp->nlp_type & NLP_FABRIC) {
J
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689
			len += snprintf(buf+len, size-len, "FABRIC ");
690 691
			iocnt = 0;
		}
J
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692
		if (ndlp->nlp_type & NLP_FCP_TARGET)
J
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693
			len += snprintf(buf+len, size-len, "FCP_TGT sid:%d ",
J
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694 695
				ndlp->nlp_sid);
		if (ndlp->nlp_type & NLP_FCP_INITIATOR)
J
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696
			len += snprintf(buf+len, size-len, "FCP_INITIATOR ");
697 698 699 700 701 702 703
		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 ");
704 705
		len += snprintf(buf+len, size-len, "usgmap:%x ",
			ndlp->nlp_usg_map);
706
		len += snprintf(buf+len, size-len, "refcnt:%x",
707
			kref_read(&ndlp->kref));
708 709 710 711 712 713 714
		if (iocnt) {
			i = atomic_read(&ndlp->cmd_pending);
			len += snprintf(buf + len, size - len,
					" OutIO:x%x Qdepth x%x",
					i, ndlp->cmd_qdepth);
			outio += i;
		}
715 716
		len += snprintf(buf + len, size - len, "defer:%x ",
			ndlp->nlp_defer_did);
J
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717 718 719
		len +=  snprintf(buf+len, size-len, "\n");
	}
	spin_unlock_irq(shost->host_lock);
J
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720

721 722 723
	len += snprintf(buf + len, size - len,
			"\nOutstanding IO x%x\n",  outio);

724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743
	if (phba->nvmet_support && phba->targetport && (vport == phba->pport)) {
		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;
	}

744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763
	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");
764
	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
765
		/* local short-hand pointer. */
766
		spin_lock(&phba->hbalock);
767
		rport = lpfc_ndlp_get_nrport(ndlp);
768 769
		if (rport)
			nrport = rport->remoteport;
A
Arnd Bergmann 已提交
770 771
		else
			nrport = NULL;
772
		spin_unlock(&phba->hbalock);
773 774
		if (!nrport)
			continue;
775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796

		/* 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);
797 798 799

		/* An NVME rport can have multiple roles. */
		if (nrport->port_role & FC_PORT_ROLE_NVME_INITIATOR)
800
			len +=  snprintf(buf + len, size - len,
801 802
					 "INITIATOR ");
		if (nrport->port_role & FC_PORT_ROLE_NVME_TARGET)
803
			len +=  snprintf(buf + len, size - len,
804 805
					 "TARGET ");
		if (nrport->port_role & FC_PORT_ROLE_NVME_DISCOVERY)
806
			len +=  snprintf(buf + len, size - len,
807 808 809 810
					 "DISCSRVC ");
		if (nrport->port_role & ~(FC_PORT_ROLE_NVME_INITIATOR |
					  FC_PORT_ROLE_NVME_TARGET |
					  FC_PORT_ROLE_NVME_DISCOVERY))
811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839
			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;
840
	struct lpfc_nvmet_tgtport *tgtp;
J
James Smart 已提交
841
	struct lpfc_nvmet_rcv_ctx *ctxp, *next_ctxp;
842
	struct nvme_fc_local_port *localport;
843
	struct lpfc_nvme_ctrl_stat *cstat;
844
	struct lpfc_nvme_lport *lport;
845 846 847
	uint64_t data1, data2, data3;
	uint64_t tot, totin, totout;
	int cnt, i, maxch;
848 849
	int len = 0;

850 851 852 853
	if (phba->nvmet_support) {
		if (!phba->targetport)
			return len;
		tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
J
James Smart 已提交
854
		len += snprintf(buf + len, size - len,
855 856
				"\nNVME Targetport Statistics\n");

J
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857
		len += snprintf(buf + len, size - len,
858 859 860 861 862 863
				"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)) {
J
James Smart 已提交
864
			len += snprintf(buf + len, size - len,
865 866 867 868 869
					"Rcv LS: in %08x != out %08x\n",
					atomic_read(&tgtp->rcv_ls_req_in),
					atomic_read(&tgtp->rcv_ls_req_out));
		}

J
James Smart 已提交
870
		len += snprintf(buf + len, size - len,
871
				"LS: Xmt %08x Drop %08x Cmpl %08x\n",
872 873
				atomic_read(&tgtp->xmt_ls_rsp),
				atomic_read(&tgtp->xmt_ls_drop),
874 875 876 877 878 879
				atomic_read(&tgtp->xmt_ls_rsp_cmpl));

		len += snprintf(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),
880 881
				atomic_read(&tgtp->xmt_ls_rsp_error));

J
James Smart 已提交
882
		len += snprintf(buf + len, size - len,
883 884
				"FCP: Rcv %08x Defer %08x Release %08x "
				"Drop %08x\n",
885
				atomic_read(&tgtp->rcv_fcp_cmd_in),
886 887
				atomic_read(&tgtp->rcv_fcp_cmd_defer),
				atomic_read(&tgtp->xmt_fcp_release),
888 889 890 891
				atomic_read(&tgtp->rcv_fcp_cmd_drop));

		if (atomic_read(&tgtp->rcv_fcp_cmd_in) !=
		    atomic_read(&tgtp->rcv_fcp_cmd_out)) {
J
James Smart 已提交
892
			len += snprintf(buf + len, size - len,
893 894 895 896 897
					"Rcv FCP: in %08x != out %08x\n",
					atomic_read(&tgtp->rcv_fcp_cmd_in),
					atomic_read(&tgtp->rcv_fcp_cmd_out));
		}

J
James Smart 已提交
898 899 900
		len += snprintf(buf + len, size - len,
				"FCP Rsp: read %08x readrsp %08x "
				"write %08x rsp %08x\n",
901 902 903 904 905
				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));

J
James Smart 已提交
906
		len += snprintf(buf + len, size - len,
907 908 909 910 911
				"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));

912 913 914 915 916 917
		len += snprintf(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));

J
James Smart 已提交
918
		len += snprintf(buf + len, size - len,
919 920 921 922 923 924 925 926
				"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),
927
				atomic_read(&tgtp->xmt_abort_rsp),
928
				atomic_read(&tgtp->xmt_abort_rsp_error));
929

J
James Smart 已提交
930 931 932
		len +=  snprintf(buf + len, size - len, "\n");

		cnt = 0;
933
		spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
J
James Smart 已提交
934 935 936 937 938
		list_for_each_entry_safe(ctxp, next_ctxp,
				&phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
				list) {
			cnt++;
		}
939
		spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
J
James Smart 已提交
940 941 942
		if (cnt) {
			len += snprintf(buf + len, size - len,
					"ABORT: %d ctx entries\n", cnt);
943
			spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
J
James Smart 已提交
944 945 946 947 948 949 950 951 952 953 954
			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);
			}
955
			spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
J
James Smart 已提交
956
		}
957

958 959 960 961
		/* 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;
962

963
		len += snprintf(buf + len, size - len,
964 965
				"IO_CTX: %08x  WAIT: cur %08x tot %08x\n"
				"CTX Outstanding %08llx\n",
966
				phba->sli4_hba.nvmet_xri_cnt,
967
				phba->sli4_hba.nvmet_io_wait_cnt,
968 969
				phba->sli4_hba.nvmet_io_wait_total,
				tot);
970
	} else {
971 972 973
		if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME))
			return len;

974 975 976 977 978 979 980
		localport = vport->localport;
		if (!localport)
			return len;
		lport = (struct lpfc_nvme_lport *)localport->private;
		if (!lport)
			return len;

981 982 983 984 985 986 987 988
		len += snprintf(buf + len, size - len,
				"\nNVME Lport Statistics\n");

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

989 990
		if (phba->cfg_hdw_queue < LPFC_HBA_HDWQ_MAX)
			maxch = phba->cfg_hdw_queue;
991
		else
992
			maxch = LPFC_HBA_HDWQ_MAX;
993 994
		totin = 0;
		totout = 0;
995
		for (i = 0; i < phba->cfg_hdw_queue; i++) {
996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020
			cstat = &lport->cstat[i];
			tot = atomic_read(&cstat->fc4NvmeIoCmpls);
			totin += tot;
			data1 = atomic_read(&cstat->fc4NvmeInputRequests);
			data2 = atomic_read(&cstat->fc4NvmeOutputRequests);
			data3 = atomic_read(&cstat->fc4NvmeControlRequests);
			totout += (data1 + data2 + data3);

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

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

1021 1022 1023 1024 1025 1026 1027 1028 1029 1030
		len += snprintf(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 += snprintf(buf + len, size - len,
				"FCP Xmt Err: noxri %06x nondlp %06x "
1031
				"qdepth %06x wqerr %06x err %06x Abrt %06x\n",
1032 1033 1034 1035
				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),
1036
				atomic_read(&lport->xmt_fcp_err),
1037 1038 1039 1040 1041 1042 1043
				atomic_read(&lport->xmt_fcp_abort));

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

1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084
	}

	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",
1085 1086
			div_u64(phba->ktime_seg1_total,
				phba->ktime_data_samples),
1087 1088 1089 1090 1091 1092 1093 1094 1095
			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",
1096 1097
			div_u64(phba->ktime_seg2_total,
				phba->ktime_data_samples),
1098 1099 1100 1101 1102 1103 1104 1105 1106
			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",
1107 1108
			div_u64(phba->ktime_seg3_total,
				phba->ktime_data_samples),
1109 1110 1111 1112 1113 1114 1115 1116 1117
			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",
1118 1119
			div_u64(phba->ktime_seg4_total,
				phba->ktime_data_samples),
1120 1121 1122 1123 1124
			phba->ktime_seg4_min,
			phba->ktime_seg4_max);
		len += snprintf(
			buf + len, PAGE_SIZE - len,
			"Total IO avg time: %08lld\n",
1125
			div_u64(phba->ktime_seg1_total +
1126 1127
			phba->ktime_seg2_total  +
			phba->ktime_seg3_total +
1128
			phba->ktime_seg4_total,
1129 1130 1131
			phba->ktime_data_samples));
		return len;
	}
1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146

	/* 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",
1147 1148
			div_u64(phba->ktime_seg1_total,
				phba->ktime_data_samples),
1149 1150 1151 1152 1153 1154 1155
			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",
1156 1157
			div_u64(phba->ktime_seg2_total,
				phba->ktime_data_samples),
1158 1159 1160 1161 1162 1163 1164
			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",
1165 1166
			div_u64(phba->ktime_seg3_total,
				phba->ktime_data_samples),
1167 1168 1169 1170 1171 1172 1173
			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",
1174 1175
			div_u64(phba->ktime_seg4_total,
				phba->ktime_data_samples),
1176 1177 1178 1179 1180 1181 1182
			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",
1183 1184
			div_u64(phba->ktime_seg5_total,
				phba->ktime_data_samples),
1185 1186 1187 1188 1189 1190 1191 1192 1193 1194
			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",
1195 1196
				div_u64(phba->ktime_seg10_total,
					phba->ktime_data_samples),
1197 1198 1199 1200 1201 1202 1203 1204 1205 1206
				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",
1207 1208
			div_u64(phba->ktime_seg6_total,
				phba->ktime_status_samples),
1209 1210 1211 1212 1213 1214 1215
			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",
1216 1217
			div_u64(phba->ktime_seg7_total,
				phba->ktime_status_samples),
1218 1219 1220 1221 1222 1223 1224
			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",
1225 1226
			div_u64(phba->ktime_seg8_total,
				phba->ktime_status_samples),
1227 1228 1229 1230 1231 1232 1233
			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",
1234 1235
			div_u64(phba->ktime_seg9_total,
				phba->ktime_status_samples),
1236 1237 1238 1239 1240 1241 1242
			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",
1243 1244
			div_u64(phba->ktime_seg10_total,
				phba->ktime_status_samples),
1245 1246
			phba->ktime_seg10_min,
			phba->ktime_seg10_max);
1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368
	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;
1369 1370
	struct lpfc_sli4_hdw_queue *qp;
	int i, j;
1371
	int len = 0;
1372 1373 1374
	uint32_t tot_xmt;
	uint32_t tot_rcv;
	uint32_t tot_cmpl;
1375

1376 1377 1378 1379 1380
	len += snprintf(buf + len, PAGE_SIZE - len,
			"CPUcheck %s ",
			(phba->cpucheck_on & LPFC_CHECK_NVME_IO ?
				"Enabled" : "Disabled"));
	if (phba->nvmet_support) {
1381
		len += snprintf(buf + len, PAGE_SIZE - len,
1382 1383 1384 1385 1386
				"%s\n",
				(phba->cpucheck_on & LPFC_CHECK_NVMET_RCV ?
					"Rcv Enabled\n" : "Rcv Disabled\n"));
	} else {
		len += snprintf(buf + len, PAGE_SIZE - len, "\n");
1387 1388
	}

1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426
	for (i = 0; i < phba->cfg_hdw_queue; i++) {
		qp = &phba->sli4_hba.hdwq[i];

		tot_rcv = 0;
		tot_xmt = 0;
		tot_cmpl = 0;
		for (j = 0; j < LPFC_CHECK_CPU_CNT; j++) {
			tot_xmt += qp->cpucheck_xmt_io[j];
			tot_cmpl += qp->cpucheck_cmpl_io[j];
			if (phba->nvmet_support)
				tot_rcv += qp->cpucheck_rcv_io[j];
		}

		/* Only display Hardware Qs with something */
		if (!tot_xmt && !tot_cmpl && !tot_rcv)
			continue;

		len += snprintf(buf + len, PAGE_SIZE - len,
				"HDWQ %03d: ", i);
		for (j = 0; j < LPFC_CHECK_CPU_CNT; j++) {
			/* Only display non-zero counters */
			if (!qp->cpucheck_xmt_io[j] &&
			    !qp->cpucheck_cmpl_io[j] &&
			    !qp->cpucheck_rcv_io[j])
				continue;
			if (phba->nvmet_support) {
				len += snprintf(buf + len, PAGE_SIZE - len,
						"CPU %03d: %x/%x/%x ", j,
						qp->cpucheck_rcv_io[j],
						qp->cpucheck_xmt_io[j],
						qp->cpucheck_cmpl_io[j]);
			} else {
				len += snprintf(buf + len, PAGE_SIZE - len,
						"CPU %03d: %x/%x ", j,
						qp->cpucheck_xmt_io[j],
						qp->cpucheck_cmpl_io[j]);
			}
		}
1427
		len += snprintf(buf + len, PAGE_SIZE - len,
1428
				"Total: %x\n", tot_xmt);
1429
	}
J
James Smart 已提交
1430 1431
	return len;
}
J
James Smart 已提交
1432

J
James Smart 已提交
1433 1434
#endif

1435
/**
1436
 * lpfc_debugfs_disc_trc - Store discovery trace log
1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450
 * @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.
 **/
J
James Smart 已提交
1451 1452 1453 1454
inline void
lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt,
	uint32_t data1, uint32_t data2, uint32_t data3)
{
1455
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1456
	struct lpfc_debugfs_trc *dtp;
J
James Smart 已提交
1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472
	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;
1473 1474 1475 1476 1477 1478
	dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
	dtp->jif = jiffies;
#endif
	return;
}

1479
/**
1480
 * lpfc_debugfs_slow_ring_trc - Store slow ring trace log
1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491
 * @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.
 **/
1492 1493 1494 1495
inline void
lpfc_debugfs_slow_ring_trc(struct lpfc_hba *phba, char *fmt,
	uint32_t data1, uint32_t data2, uint32_t data3)
{
1496
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511
	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);
J
James Smart 已提交
1512 1513 1514 1515 1516
	dtp->jif = jiffies;
#endif
	return;
}

1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550
/**
 * 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
}

1551
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1552
/**
1553
 * lpfc_debugfs_disc_trc_open - Open the discovery trace log
1554 1555 1556 1557 1558 1559 1560 1561 1562 1563
 * @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:
1564
 * This function returns zero if successful. On error it will return a negative
1565 1566
 * error value.
 **/
J
James Smart 已提交
1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583
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;

1584
	/* Round to page boundary */
1585
	size =  (lpfc_debugfs_max_disc_trc * LPFC_DEBUG_TRC_ENTRY_SIZE);
J
James Smart 已提交
1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601
	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;
}

1602
/**
1603
 * lpfc_debugfs_slow_ring_trc_open - Open the Slow Ring trace log
1604 1605 1606 1607 1608 1609 1610 1611 1612 1613
 * @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:
1614
 * This function returns zero if successful. On error it will return a negative
1615 1616
 * error value.
 **/
1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633
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;

1634
	/* Round to page boundary */
1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651
	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;
}

1652
/**
1653
 * lpfc_debugfs_hbqinfo_open - Open the hbqinfo debugfs buffer
1654 1655 1656 1657 1658 1659 1660 1661 1662 1663
 * @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:
1664
 * This function returns zero if successful. On error it will return a negative
1665 1666
 * error value.
 **/
1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677
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;

1678
	/* Round to page boundary */
1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693
	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;
}

1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735
/**
 * lpfc_debugfs_hdwqinfo_open - Open the hdwqinfo 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_hdwqinfo_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_HDWQINFO_SIZE, GFP_KERNEL);
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

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

	rc = 0;
out:
	return rc;
}

1736
/**
1737
 * lpfc_debugfs_dumpHBASlim_open - Open the Dump HBA SLIM debugfs buffer
1738 1739 1740 1741 1742 1743 1744 1745 1746 1747
 * @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:
1748
 * This function returns zero if successful. On error it will return a negative
1749 1750
 * error value.
 **/
1751
static int
1752
lpfc_debugfs_dumpHBASlim_open(struct inode *inode, struct file *file)
1753 1754 1755 1756 1757 1758 1759 1760 1761
{
	struct lpfc_hba *phba = inode->i_private;
	struct lpfc_debug *debug;
	int rc = -ENOMEM;

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

1762
	/* Round to page boundary */
1763
	debug->buffer = kmalloc(LPFC_DUMPHBASLIM_SIZE, GFP_KERNEL);
1764 1765 1766 1767 1768
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

1769 1770 1771 1772 1773 1774 1775 1776 1777
	debug->len = lpfc_debugfs_dumpHBASlim_data(phba, debug->buffer,
		LPFC_DUMPHBASLIM_SIZE);
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

1778
/**
1779
 * lpfc_debugfs_dumpHostSlim_open - Open the Dump Host SLIM debugfs buffer
1780 1781 1782 1783 1784 1785 1786 1787 1788 1789
 * @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:
1790
 * This function returns zero if successful. On error it will return a negative
1791 1792
 * error value.
 **/
1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803
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;

1804
	/* Round to page boundary */
1805 1806 1807 1808 1809 1810 1811 1812
	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);
1813 1814 1815 1816 1817 1818 1819
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832
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;

L
Lucas De Marchi 已提交
1833
	/* Round to page boundary */
J
James Smart 已提交
1834
	pr_err("9059 BLKGRD:  %s: _dump_buf_data=0x%p\n",
1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862
			__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;

L
Lucas De Marchi 已提交
1863
	/* Round to page boundary */
J
James Smart 已提交
1864 1865
	pr_err("9060 BLKGRD: %s: _dump_buf_dif=0x%p file=%pD\n",
			__func__, _dump_buf_dif, file);
1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902
	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;
}

1903 1904 1905 1906
static ssize_t
lpfc_debugfs_dif_err_read(struct file *file, char __user *buf,
	size_t nbytes, loff_t *ppos)
{
A
Al Viro 已提交
1907
	struct dentry *dent = file->f_path.dentry;
1908
	struct lpfc_hba *phba = file->private_data;
1909
	char cbuf[32];
1910
	uint64_t tmp = 0;
1911 1912 1913
	int cnt = 0;

	if (dent == phba->debug_writeGuard)
1914
		cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_wgrd_cnt);
1915
	else if (dent == phba->debug_writeApp)
1916
		cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_wapp_cnt);
1917
	else if (dent == phba->debug_writeRef)
1918
		cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_wref_cnt);
1919
	else if (dent == phba->debug_readGuard)
1920
		cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_rgrd_cnt);
1921
	else if (dent == phba->debug_readApp)
1922
		cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_rapp_cnt);
1923
	else if (dent == phba->debug_readRef)
1924
		cnt = snprintf(cbuf, 32, "%u\n", phba->lpfc_injerr_rref_cnt);
1925 1926 1927 1928 1929 1930 1931 1932
	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))
1933 1934
			cnt = snprintf(cbuf, 32, "off\n");
		else
1935 1936
			cnt = snprintf(cbuf, 32, "0x%llx\n",
				 (uint64_t) phba->lpfc_injerr_lba);
1937
	} else
1938 1939 1940 1941 1942 1943 1944 1945 1946 1947
		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)
{
A
Al Viro 已提交
1948
	struct dentry *dent = file->f_path.dentry;
1949
	struct lpfc_hba *phba = file->private_data;
1950
	char dstbuf[33];
1951
	uint64_t tmp = 0;
1952 1953
	int size;

1954
	memset(dstbuf, 0, 33);
1955 1956 1957 1958
	size = (nbytes < 32) ? nbytes : 32;
	if (copy_from_user(dstbuf, buf, size))
		return 0;

1959 1960
	if (dent == phba->debug_InjErrLBA) {
		if ((buf[0] == 'o') && (buf[1] == 'f') && (buf[2] == 'f'))
1961
			tmp = (uint64_t)(-1);
1962 1963
	}

1964
	if ((tmp == 0) && (kstrtoull(dstbuf, 0, &tmp)))
1965 1966 1967 1968 1969 1970 1971 1972
		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;
1973 1974
	else if (dent == phba->debug_readGuard)
		phba->lpfc_injerr_rgrd_cnt = (uint32_t)tmp;
1975 1976 1977 1978 1979 1980
	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;
1981 1982 1983 1984 1985 1986
	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
1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998
		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;
}

1999
/**
2000
 * lpfc_debugfs_nodelist_open - Open the nodelist debugfs file
2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
 * @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:
2011
 * This function returns zero if successful. On error it will return a negative
2012 2013
 * error value.
 **/
J
James Smart 已提交
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
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;

2025
	/* Round to page boundary */
J
James Smart 已提交
2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040
	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;
}

2041
/**
2042
 * lpfc_debugfs_lseek - Seek through a debugfs file
2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057
 * @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.
 **/
J
James Smart 已提交
2058 2059 2060
static loff_t
lpfc_debugfs_lseek(struct file *file, loff_t off, int whence)
{
A
Al Viro 已提交
2061 2062
	struct lpfc_debug *debug = file->private_data;
	return fixed_size_llseek(file, off, whence, debug->len);
J
James Smart 已提交
2063 2064
}

2065
/**
2066
 * lpfc_debugfs_read - Read a debugfs file
2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080
 * @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.
 **/
J
James Smart 已提交
2081 2082 2083 2084 2085
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;
2086

J
James Smart 已提交
2087 2088 2089 2090
	return simple_read_from_buffer(buf, nbytes, ppos, debug->buffer,
				       debug->len);
}

2091
/**
2092
 * lpfc_debugfs_release - Release the buffer used to store debugfs file data
2093 2094 2095 2096 2097 2098 2099 2100 2101 2102
 * @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.
 **/
J
James Smart 已提交
2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113
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;
}

2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124
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;
}

2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154

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;
}

2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184
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);
2185
		atomic_set(&tgtp->xmt_ls_abort_cmpl, 0);
2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198
		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);
2199
		atomic_set(&tgtp->xmt_fcp_release, 0);
2200 2201 2202 2203
		atomic_set(&tgtp->xmt_fcp_rsp_cmpl, 0);
		atomic_set(&tgtp->xmt_fcp_rsp_error, 0);
		atomic_set(&tgtp->xmt_fcp_rsp_drop, 0);

2204 2205 2206 2207
		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);
2208 2209 2210 2211 2212 2213
		atomic_set(&tgtp->xmt_abort_rsp, 0);
		atomic_set(&tgtp->xmt_abort_rsp_error, 0);
	}
	return nbytes;
}

2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430
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 */
2431
	phba->nvmeio_trc = kzalloc((sizeof(struct lpfc_debugfs_nvmeio_trc) *
2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481
				    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;
	}
	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;
2482
	struct lpfc_sli4_hdw_queue *qp;
2483 2484
	char mybuf[64];
	char *pbuf;
2485
	int i, j;
2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496

	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)) {
2497 2498 2499 2500
		if (phba->nvmet_support)
			phba->cpucheck_on |= LPFC_CHECK_NVMET_IO;
		else
			phba->cpucheck_on |= LPFC_CHECK_NVME_IO;
2501 2502 2503
		return strlen(pbuf);
	} else if ((strncmp(pbuf, "rcv",
		   sizeof("rcv") - 1) == 0)) {
2504 2505 2506 2507 2508
		if (phba->nvmet_support)
			phba->cpucheck_on |= LPFC_CHECK_NVMET_RCV;
		else
			return -EINVAL;
		return strlen(pbuf);
2509 2510 2511 2512 2513 2514
	} 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)) {
2515 2516 2517 2518 2519 2520 2521 2522
		for (i = 0; i < phba->cfg_hdw_queue; i++) {
			qp = &phba->sli4_hba.hdwq[i];

			for (j = 0; j < LPFC_CHECK_CPU_CNT; j++) {
				qp->cpucheck_rcv_io[j] = 0;
				qp->cpucheck_xmt_io[j] = 0;
				qp->cpucheck_cmpl_io[j] = 0;
			}
2523 2524 2525 2526 2527 2528
		}
		return strlen(pbuf);
	}
	return -EINVAL;
}

2529
/*
2530
 * ---------------------------------
2531
 * iDiag debugfs file access methods
2532
 * ---------------------------------
2533
 *
2534 2535
 * All access methods are through the proper SLI4 PCI function's debugfs
 * iDiag directory:
2536
 *
2537
 *     /sys/kernel/debug/lpfc/fn<#>/iDiag
2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557
 */

/**
 * 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;
2558 2559
	int i;
	size_t bsize;
2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580

	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)
2581
			return i;
2582 2583
		idiag_cmd->data[i] = simple_strtol(step_str, NULL, 0);
	}
2584
	return i;
2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652
}

/**
 * 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
2653
 * case of command for write operation.
2654 2655 2656 2657 2658 2659 2660 2661 2662
 *
 * Returns:
 * This function returns zero.
 **/
static int
lpfc_idiag_cmd_release(struct inode *inode, struct file *file)
{
	struct lpfc_debug *debug = file->private_data;

2663 2664 2665 2666 2667 2668 2669 2670
	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:
2671
			memset(&idiag, 0, sizeof(idiag));
2672 2673 2674 2675 2676
			break;
		default:
			break;
		}
	}
2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733

	/* 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) {
2734 2735
		where = idiag.cmd.data[IDIAG_PCICFG_WHERE_INDX];
		count = idiag.cmd.data[IDIAG_PCICFG_COUNT_INDX];
2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755
	} 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;
2756
	case LPFC_PCI_CFG_BROWSE: /* browse all */
2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779
		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);
2780 2781 2782 2783 2784
		if (offset >= LPFC_PCI_CFG_SIZE) {
			len += snprintf(pbuffer+len,
					LPFC_PCI_CFG_SIZE-len, "\n");
			break;
		}
2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796
		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 */
2797 2798 2799 2800 2801
	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
2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845
		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);
2846
	if (rc < 0)
2847 2848 2849
		return rc;

	if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD) {
2850 2851 2852
		/* Sanity check on PCI config read command line arguments */
		if (rc != LPFC_PCI_CFG_RD_CMD_ARG)
			goto error_out;
2853
		/* Read command from PCI config space, set up command fields */
2854 2855
		where = idiag.cmd.data[IDIAG_PCICFG_WHERE_INDX];
		count = idiag.cmd.data[IDIAG_PCICFG_COUNT_INDX];
2856 2857
		if (count == LPFC_PCI_CFG_BROWSE) {
			if (where % sizeof(uint32_t))
2858
				goto error_out;
2859 2860
			/* Starting offset to browse */
			idiag.offset.last_rd = where;
2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885
		} 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) {
2886 2887 2888
		/* Sanity check on PCI config write command line arguments */
		if (rc != LPFC_PCI_CFG_WR_CMD_ARG)
			goto error_out;
2889
		/* Write command to PCI config space, read-modify-write */
2890 2891 2892
		where = idiag.cmd.data[IDIAG_PCICFG_WHERE_INDX];
		count = idiag.cmd.data[IDIAG_PCICFG_COUNT_INDX];
		value = idiag.cmd.data[IDIAG_PCICFG_VALUE_INDX];
2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983
		/* 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;
}

2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269
/**
 * 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];
	if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_RD) {
		/* Sanity check on PCI config read command line arguments */
		if (rc != LPFC_PCI_BAR_RD_CMD_ARG)
			goto error_out;
		acc_range = idiag.cmd.data[IDIAG_BARACC_ACC_MOD_INDX];
		if (acc_range == LPFC_PCI_BAR_BROWSE) {
			if (offset > bar_size - sizeof(uint32_t))
				goto error_out;
			/* Starting offset to browse */
			idiag.offset.last_rd = offset;
		} else if (acc_range > SINGLE_WORD) {
			if (offset + acc_range * sizeof(uint32_t) > bar_size)
				goto error_out;
			/* Starting offset to browse */
			idiag.offset.last_rd = offset;
		} else if (acc_range != SINGLE_WORD)
			goto error_out;
	} else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_WR ||
		   idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_ST ||
		   idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_CL) {
		/* Sanity check on PCI bar write command line arguments */
		if (rc != LPFC_PCI_BAR_WR_CMD_ARG)
			goto error_out;
		/* Write command to PCI bar space, read-modify-write */
		acc_range = SINGLE_WORD;
		value = idiag.cmd.data[IDIAG_BARACC_REG_VAL_INDX];
		if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_WR) {
			writel(value, mem_mapped_bar + offset);
			readl(mem_mapped_bar + offset);
		}
		if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_ST) {
			u32val = readl(mem_mapped_bar + offset);
			u32val |= value;
			writel(u32val, mem_mapped_bar + offset);
			readl(mem_mapped_bar + offset);
		}
		if (idiag.cmd.opcode == LPFC_IDIAG_CMD_BARACC_CL) {
			u32val = readl(mem_mapped_bar + offset);
			u32val &= ~value;
			writel(u32val, mem_mapped_bar + offset);
			readl(mem_mapped_bar + offset);
		}
	} else
		/* All other opecodes are illegal for now */
		goto error_out;

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

3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283
static int
__lpfc_idiag_print_wq(struct lpfc_queue *qp, char *wqtype,
			char *pbuffer, int len)
{
	if (!qp)
		return len;

	len += snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len,
			"\t\t%s WQ info: ", wqtype);
	len += snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len,
			"AssocCQID[%04d]: WQ-STAT[oflow:x%x posted:x%llx]\n",
			qp->assoc_qid, qp->q_cnt_1,
			(unsigned long long)qp->q_cnt_4);
	len += snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len,
3284 3285
			"\t\tWQID[%02d], QE-CNT[%04d], QE-SZ[%04d], "
			"HST-IDX[%04d], PRT-IDX[%04d], PST[%03d]",
3286 3287
			qp->queue_id, qp->entry_count,
			qp->entry_size, qp->host_index,
3288
			qp->hba_index, qp->entry_repost);
3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300
	len +=  snprintf(pbuffer + len,
			LPFC_QUE_INFO_GET_BUF_SIZE - len, "\n");
	return len;
}

static int
lpfc_idiag_wqs_for_cq(struct lpfc_hba *phba, char *wqtype, char *pbuffer,
		int *len, int max_cnt, int cq_id)
{
	struct lpfc_queue *qp;
	int qidx;

3301 3302
	for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
		qp = phba->sli4_hba.hdwq[qidx].fcp_wq;
3303 3304 3305 3306 3307 3308
		if (qp->assoc_qid != cq_id)
			continue;
		*len = __lpfc_idiag_print_wq(qp, wqtype, pbuffer, *len);
		if (*len >= max_cnt)
			return 1;
	}
3309 3310 3311 3312 3313 3314 3315 3316 3317
	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
		for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
			qp = phba->sli4_hba.hdwq[qidx].nvme_wq;
			if (qp->assoc_qid != cq_id)
				continue;
			*len = __lpfc_idiag_print_wq(qp, wqtype, pbuffer, *len);
			if (*len >= max_cnt)
				return 1;
		}
3318
	}
3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336
	return 0;
}

static int
__lpfc_idiag_print_cq(struct lpfc_queue *qp, char *cqtype,
			char *pbuffer, int len)
{
	if (!qp)
		return len;

	len += snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len,
			"\t%s CQ info: ", cqtype);
	len += snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len,
			"AssocEQID[%02d]: CQ STAT[max:x%x relw:x%x "
			"xabt:x%x wq:x%llx]\n",
			qp->assoc_qid, qp->q_cnt_1, qp->q_cnt_2,
			qp->q_cnt_3, (unsigned long long)qp->q_cnt_4);
	len += snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len,
3337 3338
			"\tCQID[%02d], QE-CNT[%04d], QE-SZ[%04d], "
			"HST-IDX[%04d], PRT-IDX[%04d], PST[%03d]",
3339 3340
			qp->queue_id, qp->entry_count,
			qp->entry_size, qp->host_index,
3341
			qp->hba_index, qp->entry_repost);
3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358

	len +=  snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len, "\n");

	return len;
}

static int
__lpfc_idiag_print_rqpair(struct lpfc_queue *qp, struct lpfc_queue *datqp,
			char *rqtype, char *pbuffer, int len)
{
	if (!qp || !datqp)
		return len;

	len += snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len,
			"\t\t%s RQ info: ", rqtype);
	len += snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len,
			"AssocCQID[%02d]: RQ-STAT[nopost:x%x nobuf:x%x "
3359
			"posted:x%x rcv:x%llx]\n",
3360 3361 3362
			qp->assoc_qid, qp->q_cnt_1, qp->q_cnt_2,
			qp->q_cnt_3, (unsigned long long)qp->q_cnt_4);
	len += snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len,
3363 3364
			"\t\tHQID[%02d], QE-CNT[%04d], QE-SZ[%04d], "
			"HST-IDX[%04d], PRT-IDX[%04d], PST[%03d]\n",
3365
			qp->queue_id, qp->entry_count, qp->entry_size,
3366
			qp->host_index, qp->hba_index, qp->entry_repost);
3367
	len += snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len,
3368 3369
			"\t\tDQID[%02d], QE-CNT[%04d], QE-SZ[%04d], "
			"HST-IDX[%04d], PRT-IDX[%04d], PST[%03d]\n",
3370 3371
			datqp->queue_id, datqp->entry_count,
			datqp->entry_size, datqp->host_index,
3372
			datqp->hba_index, datqp->entry_repost);
3373 3374 3375 3376 3377
	return len;
}

static int
lpfc_idiag_cqs_for_eq(struct lpfc_hba *phba, char *pbuffer,
3378
		int *len, int max_cnt, int eqidx, int eq_id)
3379 3380 3381 3382
{
	struct lpfc_queue *qp;
	int qidx, rc;

3383 3384
	for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
		qp = phba->sli4_hba.hdwq[qidx].fcp_cq;
3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401
		if (qp->assoc_qid != eq_id)
			continue;

		*len = __lpfc_idiag_print_cq(qp, "FCP", pbuffer, *len);

		/* Reset max counter */
		qp->CQ_max_cqe = 0;

		if (*len >= max_cnt)
			return 1;

		rc = lpfc_idiag_wqs_for_cq(phba, "FCP", pbuffer, len,
				max_cnt, qp->queue_id);
		if (rc)
			return 1;
	}

3402 3403 3404 3405 3406
	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
		for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
			qp = phba->sli4_hba.hdwq[qidx].nvme_cq;
			if (qp->assoc_qid != eq_id)
				continue;
3407

3408
			*len = __lpfc_idiag_print_cq(qp, "NVME", pbuffer, *len);
3409

3410 3411
			/* Reset max counter */
			qp->CQ_max_cqe = 0;
3412

3413 3414
			if (*len >= max_cnt)
				return 1;
3415

3416 3417 3418 3419 3420
			rc = lpfc_idiag_wqs_for_cq(phba, "NVME", pbuffer, len,
						   max_cnt, qp->queue_id);
			if (rc)
				return 1;
		}
3421 3422
	}

3423
	if ((eqidx < phba->cfg_nvmet_mrq) && phba->nvmet_support) {
3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443
		/* NVMET CQset */
		qp = phba->sli4_hba.nvmet_cqset[eqidx];
		*len = __lpfc_idiag_print_cq(qp, "NVMET CQset", pbuffer, *len);

		/* Reset max counter */
		qp->CQ_max_cqe = 0;

		if (*len >= max_cnt)
			return 1;

		/* RQ header */
		qp = phba->sli4_hba.nvmet_mrq_hdr[eqidx];
		*len = __lpfc_idiag_print_rqpair(qp,
				phba->sli4_hba.nvmet_mrq_data[eqidx],
				"NVMET MRQ", pbuffer, *len);

		if (*len >= max_cnt)
			return 1;
	}

3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455
	return 0;
}

static int
__lpfc_idiag_print_eq(struct lpfc_queue *qp, char *eqtype,
			char *pbuffer, int len)
{
	if (!qp)
		return len;

	len += snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len,
			"\n%s EQ info: EQ-STAT[max:x%x noE:x%x "
3456
			"cqe_proc:x%x eqe_proc:x%llx eqd %d]\n",
3457
			eqtype, qp->q_cnt_1, qp->q_cnt_2, qp->q_cnt_3,
3458
			(unsigned long long)qp->q_cnt_4, qp->q_mode);
3459
	len += snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len,
3460 3461
			"EQID[%02d], QE-CNT[%04d], QE-SZ[%04d], "
			"HST-IDX[%04d], PRT-IDX[%04d], PST[%03d]",
3462
			qp->queue_id, qp->entry_count, qp->entry_size,
3463
			qp->host_index, qp->hba_index, qp->entry_repost);
3464 3465 3466 3467 3468
	len +=  snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len, "\n");

	return len;
}

3469 3470 3471 3472 3473 3474 3475 3476 3477 3478
/**
 * lpfc_idiag_queinfo_read - idiag debugfs read queue information
 * @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 SLI4 PCI function queue information,
 * and copies to user @buf.
3479 3480 3481
 * This routine only returns 1 EQs worth of information. It remembers the last
 * EQ read and jumps to the next EQ. Thus subsequent calls to queInfo will
 * retrieve all EQs allocated for the phba.
3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493
 *
 * 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_queinfo_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;
	char *pbuffer;
3494
	int max_cnt, rc, x, len = 0;
3495 3496
	struct lpfc_queue *qp = NULL;

3497 3498 3499 3500 3501
	if (!debug->buffer)
		debug->buffer = kmalloc(LPFC_QUE_INFO_GET_BUF_SIZE, GFP_KERNEL);
	if (!debug->buffer)
		return 0;
	pbuffer = debug->buffer;
3502
	max_cnt = LPFC_QUE_INFO_GET_BUF_SIZE - 256;
3503 3504 3505 3506

	if (*ppos)
		return 0;

3507 3508 3509
	spin_lock_irq(&phba->hbalock);

	/* Fast-path event queue */
3510
	if (phba->sli4_hba.hdwq && phba->cfg_hdw_queue) {
3511

3512 3513
		x = phba->lpfc_idiag_last_eq;
		phba->lpfc_idiag_last_eq++;
3514
		if (phba->lpfc_idiag_last_eq >= phba->cfg_hdw_queue)
3515
			phba->lpfc_idiag_last_eq = 0;
3516

3517 3518
		len += snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len,
					"EQ %d out of %d HBA EQs\n",
3519
					x, phba->cfg_hdw_queue);
3520

3521
		/* Fast-path EQ */
3522
		qp = phba->sli4_hba.hdwq[x].hba_eq;
3523 3524
		if (!qp)
			goto out;
3525

3526
		len = __lpfc_idiag_print_eq(qp, "HBA", pbuffer, len);
3527

3528 3529
		/* Reset max counter */
		qp->EQ_max_eqe = 0;
3530

3531 3532
		if (len >= max_cnt)
			goto too_big;
3533

3534
		/* will dump both fcp and nvme cqs/wqs for the eq */
3535
		rc = lpfc_idiag_cqs_for_eq(phba, pbuffer, &len,
3536
			max_cnt, x, qp->queue_id);
3537 3538
		if (rc)
			goto too_big;
3539

3540 3541 3542
		/* Only EQ 0 has slow path CQs configured */
		if (x)
			goto out;
3543

3544 3545 3546 3547 3548
		/* Slow-path mailbox CQ */
		qp = phba->sli4_hba.mbx_cq;
		len = __lpfc_idiag_print_cq(qp, "MBX", pbuffer, len);
		if (len >= max_cnt)
			goto too_big;
3549

3550 3551 3552 3553 3554
		/* Slow-path MBOX MQ */
		qp = phba->sli4_hba.mbx_wq;
		len = __lpfc_idiag_print_wq(qp, "MBX", pbuffer, len);
		if (len >= max_cnt)
			goto too_big;
3555

3556 3557 3558 3559 3560 3561 3562 3563
		/* Slow-path ELS response CQ */
		qp = phba->sli4_hba.els_cq;
		len = __lpfc_idiag_print_cq(qp, "ELS", pbuffer, len);
		/* Reset max counter */
		if (qp)
			qp->CQ_max_cqe = 0;
		if (len >= max_cnt)
			goto too_big;
3564

3565 3566 3567 3568 3569
		/* Slow-path ELS WQ */
		qp = phba->sli4_hba.els_wq;
		len = __lpfc_idiag_print_wq(qp, "ELS", pbuffer, len);
		if (len >= max_cnt)
			goto too_big;
3570

3571 3572 3573 3574 3575 3576
		qp = phba->sli4_hba.hdr_rq;
		len = __lpfc_idiag_print_rqpair(qp, phba->sli4_hba.dat_rq,
						"ELS RQpair", pbuffer, len);
		if (len >= max_cnt)
			goto too_big;

3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593
		/* Slow-path NVME LS response CQ */
		qp = phba->sli4_hba.nvmels_cq;
		len = __lpfc_idiag_print_cq(qp, "NVME LS",
						pbuffer, len);
		/* Reset max counter */
		if (qp)
			qp->CQ_max_cqe = 0;
		if (len >= max_cnt)
			goto too_big;

		/* Slow-path NVME LS WQ */
		qp = phba->sli4_hba.nvmels_wq;
		len = __lpfc_idiag_print_wq(qp, "NVME LS",
						pbuffer, len);
		if (len >= max_cnt)
			goto too_big;

3594
		goto out;
3595 3596
	}

3597 3598 3599 3600
	spin_unlock_irq(&phba->hbalock);
	return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);

too_big:
3601 3602 3603
	len +=  snprintf(pbuffer + len,
		LPFC_QUE_INFO_GET_BUF_SIZE - len, "Truncated ...\n");
out:
3604
	spin_unlock_irq(&phba->hbalock);
3605 3606 3607
	return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
}

3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716
/**
 * lpfc_idiag_que_param_check - queue access command parameter sanity check
 * @q: The pointer to queue structure.
 * @index: The index into a queue entry.
 * @count: The number of queue entries to access.
 *
 * Description:
 * The routine performs sanity check on device queue access method commands.
 *
 * Returns:
 * This function returns -EINVAL when fails the sanity check, otherwise, it
 * returns 0.
 **/
static int
lpfc_idiag_que_param_check(struct lpfc_queue *q, int index, int count)
{
	/* Only support single entry read or browsing */
	if ((count != 1) && (count != LPFC_QUE_ACC_BROWSE))
		return -EINVAL;
	if (index > q->entry_count - 1)
		return -EINVAL;
	return 0;
}

/**
 * lpfc_idiag_queacc_read_qe - read a single entry from the given queue index
 * @pbuffer: The pointer to buffer to copy the read data into.
 * @pque: The pointer to the queue to be read.
 * @index: The index into the queue entry.
 *
 * Description:
 * This routine reads out a single entry from the given queue's index location
 * and copies it into the buffer provided.
 *
 * Returns:
 * This function returns 0 when it fails, otherwise, it returns the length of
 * the data read into the buffer provided.
 **/
static int
lpfc_idiag_queacc_read_qe(char *pbuffer, int len, struct lpfc_queue *pque,
			  uint32_t index)
{
	int offset, esize;
	uint32_t *pentry;

	if (!pbuffer || !pque)
		return 0;

	esize = pque->entry_size;
	len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len,
			"QE-INDEX[%04d]:\n", index);

	offset = 0;
	pentry = pque->qe[index].address;
	while (esize > 0) {
		len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len,
				"%08x ", *pentry);
		pentry++;
		offset += sizeof(uint32_t);
		esize -= sizeof(uint32_t);
		if (esize > 0 && !(offset % (4 * sizeof(uint32_t))))
			len += snprintf(pbuffer+len,
					LPFC_QUE_ACC_BUF_SIZE-len, "\n");
	}
	len += snprintf(pbuffer+len, LPFC_QUE_ACC_BUF_SIZE-len, "\n");

	return len;
}

/**
 * lpfc_idiag_queacc_read - idiag debugfs read port queue
 * @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 device queue memory according to the
 * idiag command, and copies to user @buf. Depending on the queue dump read
 * command setup, it does either a single queue entry read or browing through
 * all entries of the queue.
 *
 * 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_queacc_read(struct file *file, char __user *buf, size_t nbytes,
		       loff_t *ppos)
{
	struct lpfc_debug *debug = file->private_data;
	uint32_t last_index, index, count;
	struct lpfc_queue *pque = NULL;
	char *pbuffer;
	int len = 0;

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

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

	if (*ppos)
		return 0;

	if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) {
3717 3718
		index = idiag.cmd.data[IDIAG_QUEACC_INDEX_INDX];
		count = idiag.cmd.data[IDIAG_QUEACC_COUNT_INDX];
3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778
		pque = (struct lpfc_queue *)idiag.ptr_private;
	} else
		return 0;

	/* Browse the queue starting from index */
	if (count == LPFC_QUE_ACC_BROWSE)
		goto que_browse;

	/* Read a single entry from the queue */
	len = lpfc_idiag_queacc_read_qe(pbuffer, len, pque, index);

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

que_browse:

	/* Browse all entries from the queue */
	last_index = idiag.offset.last_rd;
	index = last_index;

	while (len < LPFC_QUE_ACC_SIZE - pque->entry_size) {
		len = lpfc_idiag_queacc_read_qe(pbuffer, len, pque, index);
		index++;
		if (index > pque->entry_count - 1)
			break;
	}

	/* Set up the offset for next portion of pci cfg read */
	if (index > pque->entry_count - 1)
		index = 0;
	idiag.offset.last_rd = index;

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

/**
 * lpfc_idiag_queacc_write - Syntax check and set up idiag queacc 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 port queue read (dump) or write (set) command
 * accordingly. In the case of port queue read command, it sets up the command
 * in the idiag command struct for the following debugfs read operation. In
 * the case of port queue write operation, it executes the write operation
 * into the port queue entry 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_queacc_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 qidx, quetp, queid, index, count, offset, value;
	uint32_t *pentry;
3779
	struct lpfc_queue *pque, *qp;
3780 3781 3782 3783 3784 3785 3786 3787 3788 3789
	int rc;

	/* 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;

	/* Get and sanity check on command feilds */
3790 3791 3792 3793 3794 3795
	quetp  = idiag.cmd.data[IDIAG_QUEACC_QUETP_INDX];
	queid  = idiag.cmd.data[IDIAG_QUEACC_QUEID_INDX];
	index  = idiag.cmd.data[IDIAG_QUEACC_INDEX_INDX];
	count  = idiag.cmd.data[IDIAG_QUEACC_COUNT_INDX];
	offset = idiag.cmd.data[IDIAG_QUEACC_OFFST_INDX];
	value  = idiag.cmd.data[IDIAG_QUEACC_VALUE_INDX];
3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812

	/* Sanity check on command line arguments */
	if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR ||
	    idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST ||
	    idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL) {
		if (rc != LPFC_QUE_ACC_WR_CMD_ARG)
			goto error_out;
		if (count != 1)
			goto error_out;
	} else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) {
		if (rc != LPFC_QUE_ACC_RD_CMD_ARG)
			goto error_out;
	} else
		goto error_out;

	switch (quetp) {
	case LPFC_IDIAG_EQ:
3813
		/* HBA event queue */
3814 3815 3816
		if (phba->sli4_hba.hdwq) {
			for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
				qp = phba->sli4_hba.hdwq[qidx].hba_eq;
3817
				if (qp && qp->queue_id == queid) {
3818
					/* Sanity check */
3819
					rc = lpfc_idiag_que_param_check(qp,
3820
						index, count);
3821 3822
					if (rc)
						goto error_out;
3823
					idiag.ptr_private = qp;
3824 3825
					goto pass_check;
				}
3826 3827 3828 3829 3830 3831
			}
		}
		goto error_out;
		break;
	case LPFC_IDIAG_CQ:
		/* MBX complete queue */
3832 3833
		if (phba->sli4_hba.mbx_cq &&
		    phba->sli4_hba.mbx_cq->queue_id == queid) {
3834 3835 3836 3837 3838 3839 3840 3841 3842
			/* Sanity check */
			rc = lpfc_idiag_que_param_check(
					phba->sli4_hba.mbx_cq, index, count);
			if (rc)
				goto error_out;
			idiag.ptr_private = phba->sli4_hba.mbx_cq;
			goto pass_check;
		}
		/* ELS complete queue */
3843 3844
		if (phba->sli4_hba.els_cq &&
		    phba->sli4_hba.els_cq->queue_id == queid) {
3845 3846 3847 3848 3849 3850 3851 3852
			/* Sanity check */
			rc = lpfc_idiag_que_param_check(
					phba->sli4_hba.els_cq, index, count);
			if (rc)
				goto error_out;
			idiag.ptr_private = phba->sli4_hba.els_cq;
			goto pass_check;
		}
3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863
		/* NVME LS complete queue */
		if (phba->sli4_hba.nvmels_cq &&
		    phba->sli4_hba.nvmels_cq->queue_id == queid) {
			/* Sanity check */
			rc = lpfc_idiag_que_param_check(
					phba->sli4_hba.nvmels_cq, index, count);
			if (rc)
				goto error_out;
			idiag.ptr_private = phba->sli4_hba.nvmels_cq;
			goto pass_check;
		}
3864
		/* FCP complete queue */
3865 3866
		if (phba->sli4_hba.hdwq) {
			for (qidx = 0; qidx < phba->cfg_hdw_queue;
3867
								qidx++) {
3868
				qp = phba->sli4_hba.hdwq[qidx].fcp_cq;
3869
				if (qp && qp->queue_id == queid) {
3870 3871
					/* Sanity check */
					rc = lpfc_idiag_que_param_check(
3872
						qp, index, count);
3873 3874
					if (rc)
						goto error_out;
3875
					idiag.ptr_private = qp;
3876 3877
					goto pass_check;
				}
3878
			}
3879
		}
3880
		/* NVME complete queue */
3881
		if (phba->sli4_hba.hdwq) {
3882 3883
			qidx = 0;
			do {
3884 3885
				qp = phba->sli4_hba.hdwq[qidx].nvme_cq;
				if (qp && qp->queue_id == queid) {
3886 3887
					/* Sanity check */
					rc = lpfc_idiag_que_param_check(
3888
						qp, index, count);
3889 3890
					if (rc)
						goto error_out;
3891
					idiag.ptr_private = qp;
3892 3893
					goto pass_check;
				}
3894
			} while (++qidx < phba->cfg_hdw_queue);
3895
		}
3896 3897 3898 3899
		goto error_out;
		break;
	case LPFC_IDIAG_MQ:
		/* MBX work queue */
3900 3901
		if (phba->sli4_hba.mbx_wq &&
		    phba->sli4_hba.mbx_wq->queue_id == queid) {
3902 3903 3904 3905 3906 3907 3908 3909
			/* Sanity check */
			rc = lpfc_idiag_que_param_check(
					phba->sli4_hba.mbx_wq, index, count);
			if (rc)
				goto error_out;
			idiag.ptr_private = phba->sli4_hba.mbx_wq;
			goto pass_check;
		}
3910
		goto error_out;
3911 3912 3913
		break;
	case LPFC_IDIAG_WQ:
		/* ELS work queue */
3914 3915
		if (phba->sli4_hba.els_wq &&
		    phba->sli4_hba.els_wq->queue_id == queid) {
3916 3917 3918 3919 3920 3921 3922 3923
			/* Sanity check */
			rc = lpfc_idiag_que_param_check(
					phba->sli4_hba.els_wq, index, count);
			if (rc)
				goto error_out;
			idiag.ptr_private = phba->sli4_hba.els_wq;
			goto pass_check;
		}
3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934
		/* NVME LS work queue */
		if (phba->sli4_hba.nvmels_wq &&
		    phba->sli4_hba.nvmels_wq->queue_id == queid) {
			/* Sanity check */
			rc = lpfc_idiag_que_param_check(
					phba->sli4_hba.nvmels_wq, index, count);
			if (rc)
				goto error_out;
			idiag.ptr_private = phba->sli4_hba.nvmels_wq;
			goto pass_check;
		}
3935 3936 3937 3938 3939

		if (phba->sli4_hba.hdwq) {
			/* FCP/SCSI work queue */
			for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
				qp = phba->sli4_hba.hdwq[qidx].fcp_wq;
3940
				if (qp && qp->queue_id == queid) {
3941 3942
					/* Sanity check */
					rc = lpfc_idiag_que_param_check(
3943 3944 3945 3946 3947 3948 3949
						qp, index, count);
					if (rc)
						goto error_out;
					idiag.ptr_private = qp;
					goto pass_check;
				}
			}
3950 3951 3952
			/* NVME work queue */
			for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
				qp = phba->sli4_hba.hdwq[qidx].nvme_wq;
3953 3954 3955 3956
				if (qp && qp->queue_id == queid) {
					/* Sanity check */
					rc = lpfc_idiag_que_param_check(
						qp, index, count);
3957 3958
					if (rc)
						goto error_out;
3959
					idiag.ptr_private = qp;
3960 3961
					goto pass_check;
				}
3962 3963
			}
		}
3964

3965 3966 3967 3968
		goto error_out;
		break;
	case LPFC_IDIAG_RQ:
		/* HDR queue */
3969 3970
		if (phba->sli4_hba.hdr_rq &&
		    phba->sli4_hba.hdr_rq->queue_id == queid) {
3971 3972 3973 3974 3975 3976 3977 3978 3979
			/* Sanity check */
			rc = lpfc_idiag_que_param_check(
					phba->sli4_hba.hdr_rq, index, count);
			if (rc)
				goto error_out;
			idiag.ptr_private = phba->sli4_hba.hdr_rq;
			goto pass_check;
		}
		/* DAT queue */
3980 3981
		if (phba->sli4_hba.dat_rq &&
		    phba->sli4_hba.dat_rq->queue_id == queid) {
3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050
			/* Sanity check */
			rc = lpfc_idiag_que_param_check(
					phba->sli4_hba.dat_rq, index, count);
			if (rc)
				goto error_out;
			idiag.ptr_private = phba->sli4_hba.dat_rq;
			goto pass_check;
		}
		goto error_out;
		break;
	default:
		goto error_out;
		break;
	}

pass_check:

	if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_RD) {
		if (count == LPFC_QUE_ACC_BROWSE)
			idiag.offset.last_rd = index;
	}

	if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR ||
	    idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST ||
	    idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL) {
		/* Additional sanity checks on write operation */
		pque = (struct lpfc_queue *)idiag.ptr_private;
		if (offset > pque->entry_size/sizeof(uint32_t) - 1)
			goto error_out;
		pentry = pque->qe[index].address;
		pentry += offset;
		if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_WR)
			*pentry = value;
		if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_ST)
			*pentry |= value;
		if (idiag.cmd.opcode == LPFC_IDIAG_CMD_QUEACC_CL)
			*pentry &= ~value;
	}
	return nbytes;

error_out:
	/* Clean out command structure on command error out */
	memset(&idiag, 0, sizeof(idiag));
	return -EINVAL;
}

/**
 * lpfc_idiag_drbacc_read_reg - idiag debugfs read a doorbell register
 * @phba: The pointer to hba structure.
 * @pbuffer: The pointer to the buffer to copy the data to.
 * @len: The lenght of bytes to copied.
 * @drbregid: The id to doorbell registers.
 *
 * Description:
 * This routine reads a doorbell register and copies its content to the
 * user buffer pointed to by @pbuffer.
 *
 * Returns:
 * This function returns the amount of data that was copied into @pbuffer.
 **/
static int
lpfc_idiag_drbacc_read_reg(struct lpfc_hba *phba, char *pbuffer,
			   int len, uint32_t drbregid)
{

	if (!pbuffer)
		return 0;

	switch (drbregid) {
4051 4052 4053 4054 4055 4056 4057 4058 4059
	case LPFC_DRB_EQ:
		len += snprintf(pbuffer + len, LPFC_DRB_ACC_BUF_SIZE-len,
				"EQ-DRB-REG: 0x%08x\n",
				readl(phba->sli4_hba.EQDBregaddr));
		break;
	case LPFC_DRB_CQ:
		len += snprintf(pbuffer + len, LPFC_DRB_ACC_BUF_SIZE - len,
				"CQ-DRB-REG: 0x%08x\n",
				readl(phba->sli4_hba.CQDBregaddr));
4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122
		break;
	case LPFC_DRB_MQ:
		len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len,
				"MQ-DRB-REG:   0x%08x\n",
				readl(phba->sli4_hba.MQDBregaddr));
		break;
	case LPFC_DRB_WQ:
		len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len,
				"WQ-DRB-REG:   0x%08x\n",
				readl(phba->sli4_hba.WQDBregaddr));
		break;
	case LPFC_DRB_RQ:
		len += snprintf(pbuffer+len, LPFC_DRB_ACC_BUF_SIZE-len,
				"RQ-DRB-REG:   0x%08x\n",
				readl(phba->sli4_hba.RQDBregaddr));
		break;
	default:
		break;
	}

	return len;
}

/**
 * lpfc_idiag_drbacc_read - idiag debugfs read port doorbell
 * @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 device doorbell register according
 * to the idiag command, and copies to user @buf. Depending on the doorbell
 * register read command setup, it does either a single doorbell register
 * read or dump all doorbell registers.
 *
 * 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_drbacc_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;
	uint32_t drb_reg_id, i;
	char *pbuffer;
	int len = 0;

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

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

	if (*ppos)
		return 0;

	if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_RD)
4123
		drb_reg_id = idiag.cmd.data[IDIAG_DRBACC_REGID_INDX];
4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161
	else
		return 0;

	if (drb_reg_id == LPFC_DRB_ACC_ALL)
		for (i = 1; i <= LPFC_DRB_MAX; i++)
			len = lpfc_idiag_drbacc_read_reg(phba,
							 pbuffer, len, i);
	else
		len = lpfc_idiag_drbacc_read_reg(phba,
						 pbuffer, len, drb_reg_id);

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

/**
 * lpfc_idiag_drbacc_write - Syntax check and set up idiag drbacc 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 port doorbell register read (dump) or write
 * (set) command accordingly. In the case of port queue read command, it sets
 * up the command in the idiag command struct for the following debugfs read
 * operation. In the case of port doorbell register write operation, it
 * executes the write operation into the port doorbell register 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_drbacc_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;
4162
	uint32_t drb_reg_id, value, reg_val = 0;
4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173
	void __iomem *drb_reg;
	int rc;

	/* 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;

	/* Sanity check on command line arguments */
4174 4175
	drb_reg_id = idiag.cmd.data[IDIAG_DRBACC_REGID_INDX];
	value = idiag.cmd.data[IDIAG_DRBACC_VALUE_INDX];
4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197

	if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR ||
	    idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST ||
	    idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) {
		if (rc != LPFC_DRB_ACC_WR_CMD_ARG)
			goto error_out;
		if (drb_reg_id > LPFC_DRB_MAX)
			goto error_out;
	} else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_RD) {
		if (rc != LPFC_DRB_ACC_RD_CMD_ARG)
			goto error_out;
		if ((drb_reg_id > LPFC_DRB_MAX) &&
		    (drb_reg_id != LPFC_DRB_ACC_ALL))
			goto error_out;
	} else
		goto error_out;

	/* Perform the write access operation */
	if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR ||
	    idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST ||
	    idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) {
		switch (drb_reg_id) {
4198 4199 4200 4201 4202
		case LPFC_DRB_EQ:
			drb_reg = phba->sli4_hba.EQDBregaddr;
			break;
		case LPFC_DRB_CQ:
			drb_reg = phba->sli4_hba.CQDBregaddr;
4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237
			break;
		case LPFC_DRB_MQ:
			drb_reg = phba->sli4_hba.MQDBregaddr;
			break;
		case LPFC_DRB_WQ:
			drb_reg = phba->sli4_hba.WQDBregaddr;
			break;
		case LPFC_DRB_RQ:
			drb_reg = phba->sli4_hba.RQDBregaddr;
			break;
		default:
			goto error_out;
		}

		if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_WR)
			reg_val = value;
		if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_ST) {
			reg_val = readl(drb_reg);
			reg_val |= value;
		}
		if (idiag.cmd.opcode == LPFC_IDIAG_CMD_DRBACC_CL) {
			reg_val = readl(drb_reg);
			reg_val &= ~value;
		}
		writel(reg_val, drb_reg);
		readl(drb_reg); /* flush */
	}
	return nbytes;

error_out:
	/* Clean out command structure on command error out */
	memset(&idiag, 0, sizeof(idiag));
	return -EINVAL;
}

4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255
/**
 * lpfc_idiag_ctlacc_read_reg - idiag debugfs read a control registers
 * @phba: The pointer to hba structure.
 * @pbuffer: The pointer to the buffer to copy the data to.
 * @len: The lenght of bytes to copied.
 * @drbregid: The id to doorbell registers.
 *
 * Description:
 * This routine reads a control register and copies its content to the
 * user buffer pointed to by @pbuffer.
 *
 * Returns:
 * This function returns the amount of data that was copied into @pbuffer.
 **/
static int
lpfc_idiag_ctlacc_read_reg(struct lpfc_hba *phba, char *pbuffer,
			   int len, uint32_t ctlregid)
{
J
James Smart 已提交
4256

4257 4258
	if (!pbuffer)
		return 0;
J
James Smart 已提交
4259

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	switch (ctlregid) {
	case LPFC_CTL_PORT_SEM:
		len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
				"Port SemReg:   0x%08x\n",
				readl(phba->sli4_hba.conf_regs_memmap_p +
				      LPFC_CTL_PORT_SEM_OFFSET));
		break;
	case LPFC_CTL_PORT_STA:
		len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
				"Port StaReg:   0x%08x\n",
				readl(phba->sli4_hba.conf_regs_memmap_p +
				      LPFC_CTL_PORT_STA_OFFSET));
		break;
	case LPFC_CTL_PORT_CTL:
		len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
				"Port CtlReg:   0x%08x\n",
				readl(phba->sli4_hba.conf_regs_memmap_p +
				      LPFC_CTL_PORT_CTL_OFFSET));
		break;
	case LPFC_CTL_PORT_ER1:
		len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
				"Port Er1Reg:   0x%08x\n",
				readl(phba->sli4_hba.conf_regs_memmap_p +
				      LPFC_CTL_PORT_ER1_OFFSET));
		break;
	case LPFC_CTL_PORT_ER2:
		len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
				"Port Er2Reg:   0x%08x\n",
				readl(phba->sli4_hba.conf_regs_memmap_p +
				      LPFC_CTL_PORT_ER2_OFFSET));
		break;
	case LPFC_CTL_PDEV_CTL:
		len += snprintf(pbuffer+len, LPFC_CTL_ACC_BUF_SIZE-len,
				"PDev CtlReg:   0x%08x\n",
				readl(phba->sli4_hba.conf_regs_memmap_p +
				      LPFC_CTL_PDEV_CTL_OFFSET));
		break;
	default:
		break;
	}
	return len;
}
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/**
 * lpfc_idiag_ctlacc_read - idiag debugfs read port and device control register
 * @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 port and device registers 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_ctlacc_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;
	uint32_t ctl_reg_id, i;
	char *pbuffer;
	int len = 0;
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	/* This is a user read operation */
	debug->op = LPFC_IDIAG_OP_RD;
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	if (!debug->buffer)
		debug->buffer = kmalloc(LPFC_CTL_ACC_BUF_SIZE, GFP_KERNEL);
	if (!debug->buffer)
		return 0;
	pbuffer = debug->buffer;
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	if (*ppos)
		return 0;

	if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_RD)
		ctl_reg_id = idiag.cmd.data[IDIAG_CTLACC_REGID_INDX];
	else
		return 0;

	if (ctl_reg_id == LPFC_CTL_ACC_ALL)
		for (i = 1; i <= LPFC_CTL_MAX; i++)
			len = lpfc_idiag_ctlacc_read_reg(phba,
							 pbuffer, len, i);
	else
		len = lpfc_idiag_ctlacc_read_reg(phba,
						 pbuffer, len, ctl_reg_id);

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

/**
 * lpfc_idiag_ctlacc_write - Syntax check and set up idiag ctlacc 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 port and device control register read (dump)
 * or write (set) command 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_ctlacc_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 ctl_reg_id, value, reg_val = 0;
	void __iomem *ctl_reg;
	int rc;

	/* 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;

	/* Sanity check on command line arguments */
	ctl_reg_id = idiag.cmd.data[IDIAG_CTLACC_REGID_INDX];
	value = idiag.cmd.data[IDIAG_CTLACC_VALUE_INDX];

	if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_WR ||
	    idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_ST ||
	    idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_CL) {
		if (rc != LPFC_CTL_ACC_WR_CMD_ARG)
			goto error_out;
		if (ctl_reg_id > LPFC_CTL_MAX)
			goto error_out;
	} else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_RD) {
		if (rc != LPFC_CTL_ACC_RD_CMD_ARG)
			goto error_out;
		if ((ctl_reg_id > LPFC_CTL_MAX) &&
		    (ctl_reg_id != LPFC_CTL_ACC_ALL))
			goto error_out;
	} else
		goto error_out;

	/* Perform the write access operation */
	if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_WR ||
	    idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_ST ||
	    idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_CL) {
		switch (ctl_reg_id) {
		case LPFC_CTL_PORT_SEM:
			ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
					LPFC_CTL_PORT_SEM_OFFSET;
			break;
		case LPFC_CTL_PORT_STA:
			ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
					LPFC_CTL_PORT_STA_OFFSET;
			break;
		case LPFC_CTL_PORT_CTL:
			ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
					LPFC_CTL_PORT_CTL_OFFSET;
			break;
		case LPFC_CTL_PORT_ER1:
			ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
					LPFC_CTL_PORT_ER1_OFFSET;
			break;
		case LPFC_CTL_PORT_ER2:
			ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
					LPFC_CTL_PORT_ER2_OFFSET;
			break;
		case LPFC_CTL_PDEV_CTL:
			ctl_reg = phba->sli4_hba.conf_regs_memmap_p +
					LPFC_CTL_PDEV_CTL_OFFSET;
			break;
		default:
			goto error_out;
		}

		if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_WR)
			reg_val = value;
		if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_ST) {
			reg_val = readl(ctl_reg);
			reg_val |= value;
		}
		if (idiag.cmd.opcode == LPFC_IDIAG_CMD_CTLACC_CL) {
			reg_val = readl(ctl_reg);
			reg_val &= ~value;
		}
		writel(reg_val, ctl_reg);
		readl(ctl_reg); /* flush */
	}
	return nbytes;

error_out:
	/* Clean out command structure on command error out */
	memset(&idiag, 0, sizeof(idiag));
	return -EINVAL;
}

/**
 * lpfc_idiag_mbxacc_get_setup - idiag debugfs get mailbox access setup
 * @phba: Pointer to HBA context object.
 * @pbuffer: Pointer to data buffer.
 *
 * Description:
 * This routine gets the driver mailbox access debugfs setup information.
 *
 * 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 int
lpfc_idiag_mbxacc_get_setup(struct lpfc_hba *phba, char *pbuffer)
{
	uint32_t mbx_dump_map, mbx_dump_cnt, mbx_word_cnt, mbx_mbox_cmd;
	int len = 0;

	mbx_mbox_cmd = idiag.cmd.data[IDIAG_MBXACC_MBCMD_INDX];
	mbx_dump_map = idiag.cmd.data[IDIAG_MBXACC_DPMAP_INDX];
	mbx_dump_cnt = idiag.cmd.data[IDIAG_MBXACC_DPCNT_INDX];
	mbx_word_cnt = idiag.cmd.data[IDIAG_MBXACC_WDCNT_INDX];

	len += snprintf(pbuffer+len, LPFC_MBX_ACC_BUF_SIZE-len,
			"mbx_dump_map: 0x%08x\n", mbx_dump_map);
	len += snprintf(pbuffer+len, LPFC_MBX_ACC_BUF_SIZE-len,
			"mbx_dump_cnt: %04d\n", mbx_dump_cnt);
	len += snprintf(pbuffer+len, LPFC_MBX_ACC_BUF_SIZE-len,
			"mbx_word_cnt: %04d\n", mbx_word_cnt);
	len += snprintf(pbuffer+len, LPFC_MBX_ACC_BUF_SIZE-len,
			"mbx_mbox_cmd: 0x%02x\n", mbx_mbox_cmd);

	return len;
}

/**
 * lpfc_idiag_mbxacc_read - idiag debugfs read on mailbox access
 * @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 driver mailbox access debugfs setup
 * information.
 *
 * 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_mbxacc_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;
	char *pbuffer;
	int len = 0;

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

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

	if (*ppos)
		return 0;

	if ((idiag.cmd.opcode != LPFC_IDIAG_CMD_MBXACC_DP) &&
	    (idiag.cmd.opcode != LPFC_IDIAG_BSG_MBXACC_DP))
		return 0;

	len = lpfc_idiag_mbxacc_get_setup(phba, pbuffer);

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

/**
 * lpfc_idiag_mbxacc_write - Syntax check and set up idiag mbxacc 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 driver mailbox command (dump) and sets up the
 * necessary states in the idiag command struct 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_mbxacc_write(struct file *file, const char __user *buf,
			size_t nbytes, loff_t *ppos)
{
	struct lpfc_debug *debug = file->private_data;
	uint32_t mbx_dump_map, mbx_dump_cnt, mbx_word_cnt, mbx_mbox_cmd;
	int rc;

	/* 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;

	/* Sanity check on command line arguments */
	mbx_mbox_cmd = idiag.cmd.data[IDIAG_MBXACC_MBCMD_INDX];
	mbx_dump_map = idiag.cmd.data[IDIAG_MBXACC_DPMAP_INDX];
	mbx_dump_cnt = idiag.cmd.data[IDIAG_MBXACC_DPCNT_INDX];
	mbx_word_cnt = idiag.cmd.data[IDIAG_MBXACC_WDCNT_INDX];

	if (idiag.cmd.opcode == LPFC_IDIAG_CMD_MBXACC_DP) {
		if (!(mbx_dump_map & LPFC_MBX_DMP_MBX_ALL))
			goto error_out;
		if ((mbx_dump_map & ~LPFC_MBX_DMP_MBX_ALL) &&
		    (mbx_dump_map != LPFC_MBX_DMP_ALL))
			goto error_out;
		if (mbx_word_cnt > sizeof(MAILBOX_t))
			goto error_out;
	} else if (idiag.cmd.opcode == LPFC_IDIAG_BSG_MBXACC_DP) {
		if (!(mbx_dump_map & LPFC_BSG_DMP_MBX_ALL))
			goto error_out;
		if ((mbx_dump_map & ~LPFC_BSG_DMP_MBX_ALL) &&
		    (mbx_dump_map != LPFC_MBX_DMP_ALL))
			goto error_out;
		if (mbx_word_cnt > (BSG_MBOX_SIZE)/4)
			goto error_out;
		if (mbx_mbox_cmd != 0x9b)
			goto error_out;
	} else
		goto error_out;

	if (mbx_word_cnt == 0)
		goto error_out;
	if (rc != LPFC_MBX_DMP_ARG)
		goto error_out;
	if (mbx_mbox_cmd & ~0xff)
		goto error_out;

	/* condition for stop mailbox dump */
	if (mbx_dump_cnt == 0)
		goto reset_out;

	return nbytes;

reset_out:
	/* Clean out command structure on command error out */
	memset(&idiag, 0, sizeof(idiag));
	return nbytes;

error_out:
	/* Clean out command structure on command error out */
	memset(&idiag, 0, sizeof(idiag));
	return -EINVAL;
}

/**
 * lpfc_idiag_extacc_avail_get - get the available extents information
 * @phba: pointer to lpfc hba data structure.
 * @pbuffer: pointer to internal buffer.
 * @len: length into the internal buffer data has been copied.
 *
 * Description:
 * This routine is to get the available extent information.
 *
 * Returns:
 * overall lenth of the data read into the internal buffer.
 **/
static int
lpfc_idiag_extacc_avail_get(struct lpfc_hba *phba, char *pbuffer, int len)
{
	uint16_t ext_cnt, ext_size;

	len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
			"\nAvailable Extents Information:\n");

	len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
			"\tPort Available VPI extents: ");
	lpfc_sli4_get_avail_extnt_rsrc(phba, LPFC_RSC_TYPE_FCOE_VPI,
				       &ext_cnt, &ext_size);
	len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
			"Count %3d, Size %3d\n", ext_cnt, ext_size);

	len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
			"\tPort Available VFI extents: ");
	lpfc_sli4_get_avail_extnt_rsrc(phba, LPFC_RSC_TYPE_FCOE_VFI,
				       &ext_cnt, &ext_size);
	len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
			"Count %3d, Size %3d\n", ext_cnt, ext_size);

	len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
			"\tPort Available RPI extents: ");
	lpfc_sli4_get_avail_extnt_rsrc(phba, LPFC_RSC_TYPE_FCOE_RPI,
				       &ext_cnt, &ext_size);
	len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
			"Count %3d, Size %3d\n", ext_cnt, ext_size);

	len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
			"\tPort Available XRI extents: ");
	lpfc_sli4_get_avail_extnt_rsrc(phba, LPFC_RSC_TYPE_FCOE_XRI,
				       &ext_cnt, &ext_size);
	len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
			"Count %3d, Size %3d\n", ext_cnt, ext_size);

	return len;
}

/**
 * lpfc_idiag_extacc_alloc_get - get the allocated extents information
 * @phba: pointer to lpfc hba data structure.
 * @pbuffer: pointer to internal buffer.
 * @len: length into the internal buffer data has been copied.
 *
 * Description:
 * This routine is to get the allocated extent information.
 *
 * Returns:
 * overall lenth of the data read into the internal buffer.
 **/
static int
lpfc_idiag_extacc_alloc_get(struct lpfc_hba *phba, char *pbuffer, int len)
{
	uint16_t ext_cnt, ext_size;
	int rc;

	len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
			"\nAllocated Extents Information:\n");

	len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
			"\tHost Allocated VPI extents: ");
	rc = lpfc_sli4_get_allocated_extnts(phba, LPFC_RSC_TYPE_FCOE_VPI,
					    &ext_cnt, &ext_size);
	if (!rc)
		len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
				"Port %d Extent %3d, Size %3d\n",
				phba->brd_no, ext_cnt, ext_size);
	else
		len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
				"N/A\n");

	len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
			"\tHost Allocated VFI extents: ");
	rc = lpfc_sli4_get_allocated_extnts(phba, LPFC_RSC_TYPE_FCOE_VFI,
					    &ext_cnt, &ext_size);
	if (!rc)
		len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
				"Port %d Extent %3d, Size %3d\n",
				phba->brd_no, ext_cnt, ext_size);
	else
		len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
				"N/A\n");

	len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
			"\tHost Allocated RPI extents: ");
	rc = lpfc_sli4_get_allocated_extnts(phba, LPFC_RSC_TYPE_FCOE_RPI,
					    &ext_cnt, &ext_size);
	if (!rc)
		len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
				"Port %d Extent %3d, Size %3d\n",
				phba->brd_no, ext_cnt, ext_size);
	else
		len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
				"N/A\n");

	len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
			"\tHost Allocated XRI extents: ");
	rc = lpfc_sli4_get_allocated_extnts(phba, LPFC_RSC_TYPE_FCOE_XRI,
					    &ext_cnt, &ext_size);
	if (!rc)
		len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
				"Port %d Extent %3d, Size %3d\n",
				phba->brd_no, ext_cnt, ext_size);
	else
		len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
				"N/A\n");

	return len;
}

/**
 * lpfc_idiag_extacc_drivr_get - get driver extent information
 * @phba: pointer to lpfc hba data structure.
 * @pbuffer: pointer to internal buffer.
 * @len: length into the internal buffer data has been copied.
 *
 * Description:
 * This routine is to get the driver extent information.
 *
 * Returns:
 * overall lenth of the data read into the internal buffer.
 **/
static int
lpfc_idiag_extacc_drivr_get(struct lpfc_hba *phba, char *pbuffer, int len)
{
	struct lpfc_rsrc_blks *rsrc_blks;
	int index;

	len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
			"\nDriver Extents Information:\n");

	len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
			"\tVPI extents:\n");
	index = 0;
	list_for_each_entry(rsrc_blks, &phba->lpfc_vpi_blk_list, list) {
		len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
				"\t\tBlock %3d: Start %4d, Count %4d\n",
				index, rsrc_blks->rsrc_start,
				rsrc_blks->rsrc_size);
		index++;
	}
	len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
			"\tVFI extents:\n");
	index = 0;
	list_for_each_entry(rsrc_blks, &phba->sli4_hba.lpfc_vfi_blk_list,
			    list) {
		len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
				"\t\tBlock %3d: Start %4d, Count %4d\n",
				index, rsrc_blks->rsrc_start,
				rsrc_blks->rsrc_size);
		index++;
	}

	len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
			"\tRPI extents:\n");
	index = 0;
	list_for_each_entry(rsrc_blks, &phba->sli4_hba.lpfc_rpi_blk_list,
			    list) {
		len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
				"\t\tBlock %3d: Start %4d, Count %4d\n",
				index, rsrc_blks->rsrc_start,
				rsrc_blks->rsrc_size);
		index++;
	}

	len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
			"\tXRI extents:\n");
	index = 0;
	list_for_each_entry(rsrc_blks, &phba->sli4_hba.lpfc_xri_blk_list,
			    list) {
		len += snprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len,
				"\t\tBlock %3d: Start %4d, Count %4d\n",
				index, rsrc_blks->rsrc_start,
				rsrc_blks->rsrc_size);
		index++;
	}

	return len;
}

/**
 * lpfc_idiag_extacc_write - Syntax check and set up idiag extacc 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 extent information access commands and sets
 * up the necessary states in the idiag command struct 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_extacc_write(struct file *file, const char __user *buf,
			size_t nbytes, loff_t *ppos)
{
	struct lpfc_debug *debug = file->private_data;
	uint32_t ext_map;
	int rc;

	/* 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;

	ext_map = idiag.cmd.data[IDIAG_EXTACC_EXMAP_INDX];

	if (idiag.cmd.opcode != LPFC_IDIAG_CMD_EXTACC_RD)
		goto error_out;
	if (rc != LPFC_EXT_ACC_CMD_ARG)
		goto error_out;
	if (!(ext_map & LPFC_EXT_ACC_ALL))
		goto error_out;

	return nbytes;
error_out:
	/* Clean out command structure on command error out */
	memset(&idiag, 0, sizeof(idiag));
	return -EINVAL;
}

/**
 * lpfc_idiag_extacc_read - idiag debugfs read access to extent information
 * @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 proper extent information 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_extacc_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;
	char *pbuffer;
	uint32_t ext_map;
	int len = 0;

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

	if (!debug->buffer)
		debug->buffer = kmalloc(LPFC_EXT_ACC_BUF_SIZE, GFP_KERNEL);
	if (!debug->buffer)
		return 0;
	pbuffer = debug->buffer;
	if (*ppos)
		return 0;
	if (idiag.cmd.opcode != LPFC_IDIAG_CMD_EXTACC_RD)
		return 0;

	ext_map = idiag.cmd.data[IDIAG_EXTACC_EXMAP_INDX];
	if (ext_map & LPFC_EXT_ACC_AVAIL)
		len = lpfc_idiag_extacc_avail_get(phba, pbuffer, len);
	if (ext_map & LPFC_EXT_ACC_ALLOC)
		len = lpfc_idiag_extacc_alloc_get(phba, pbuffer, len);
	if (ext_map & LPFC_EXT_ACC_DRIVR)
		len = lpfc_idiag_extacc_drivr_get(phba, pbuffer, len);

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

#undef lpfc_debugfs_op_disc_trc
static const struct file_operations lpfc_debugfs_op_disc_trc = {
	.owner =        THIS_MODULE,
	.open =         lpfc_debugfs_disc_trc_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_debugfs_read,
	.release =      lpfc_debugfs_release,
};

#undef lpfc_debugfs_op_nodelist
static const struct file_operations lpfc_debugfs_op_nodelist = {
	.owner =        THIS_MODULE,
	.open =         lpfc_debugfs_nodelist_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_debugfs_read,
	.release =      lpfc_debugfs_release,
};

#undef lpfc_debugfs_op_hbqinfo
static const struct file_operations lpfc_debugfs_op_hbqinfo = {
	.owner =        THIS_MODULE,
	.open =         lpfc_debugfs_hbqinfo_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_debugfs_read,
	.release =      lpfc_debugfs_release,
};

4938 4939 4940 4941 4942 4943 4944 4945 4946
#undef lpfc_debugfs_op_hdwqinfo
static const struct file_operations lpfc_debugfs_op_hdwqinfo = {
	.owner =        THIS_MODULE,
	.open =         lpfc_debugfs_hdwqinfo_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_debugfs_read,
	.release =      lpfc_debugfs_release,
};

4947 4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960 4961 4962 4963 4964
#undef lpfc_debugfs_op_dumpHBASlim
static const struct file_operations lpfc_debugfs_op_dumpHBASlim = {
	.owner =        THIS_MODULE,
	.open =         lpfc_debugfs_dumpHBASlim_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_debugfs_read,
	.release =      lpfc_debugfs_release,
};

#undef lpfc_debugfs_op_dumpHostSlim
static const struct file_operations lpfc_debugfs_op_dumpHostSlim = {
	.owner =        THIS_MODULE,
	.open =         lpfc_debugfs_dumpHostSlim_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_debugfs_read,
	.release =      lpfc_debugfs_release,
};

4965 4966 4967 4968 4969 4970
#undef lpfc_debugfs_op_nvmestat
static const struct file_operations lpfc_debugfs_op_nvmestat = {
	.owner =        THIS_MODULE,
	.open =         lpfc_debugfs_nvmestat_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_debugfs_read,
4971
	.write =	lpfc_debugfs_nvmestat_write,
4972 4973 4974 4975 4976 4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987 4988 4989 4990 4991 4992 4993 4994 4995 4996 4997 4998 4999 5000 5001 5002 5003 5004
	.release =      lpfc_debugfs_release,
};

#undef lpfc_debugfs_op_nvmektime
static const struct file_operations lpfc_debugfs_op_nvmektime = {
	.owner =        THIS_MODULE,
	.open =         lpfc_debugfs_nvmektime_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_debugfs_read,
	.write =	lpfc_debugfs_nvmektime_write,
	.release =      lpfc_debugfs_release,
};

#undef lpfc_debugfs_op_nvmeio_trc
static const struct file_operations lpfc_debugfs_op_nvmeio_trc = {
	.owner =        THIS_MODULE,
	.open =         lpfc_debugfs_nvmeio_trc_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_debugfs_read,
	.write =	lpfc_debugfs_nvmeio_trc_write,
	.release =      lpfc_debugfs_release,
};

#undef lpfc_debugfs_op_cpucheck
static const struct file_operations lpfc_debugfs_op_cpucheck = {
	.owner =        THIS_MODULE,
	.open =         lpfc_debugfs_cpucheck_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_debugfs_read,
	.write =	lpfc_debugfs_cpucheck_write,
	.release =      lpfc_debugfs_release,
};

5005 5006 5007 5008 5009 5010 5011 5012 5013 5014 5015 5016
#undef lpfc_debugfs_op_dumpData
static const struct file_operations lpfc_debugfs_op_dumpData = {
	.owner =        THIS_MODULE,
	.open =         lpfc_debugfs_dumpData_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_debugfs_read,
	.write =	lpfc_debugfs_dumpDataDif_write,
	.release =      lpfc_debugfs_dumpDataDif_release,
};

#undef lpfc_debugfs_op_dumpDif
static const struct file_operations lpfc_debugfs_op_dumpDif = {
5017 5018 5019 5020 5021 5022 5023 5024
	.owner =        THIS_MODULE,
	.open =         lpfc_debugfs_dumpDif_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_debugfs_read,
	.write =	lpfc_debugfs_dumpDataDif_write,
	.release =      lpfc_debugfs_dumpDataDif_release,
};

5025 5026 5027
#undef lpfc_debugfs_op_dif_err
static const struct file_operations lpfc_debugfs_op_dif_err = {
	.owner =	THIS_MODULE,
5028
	.open =		simple_open,
5029 5030 5031 5032 5033 5034
	.llseek =	lpfc_debugfs_lseek,
	.read =		lpfc_debugfs_dif_err_read,
	.write =	lpfc_debugfs_dif_err_write,
	.release =	lpfc_debugfs_dif_err_release,
};

5035
#undef lpfc_debugfs_op_slow_ring_trc
5036
static const struct file_operations lpfc_debugfs_op_slow_ring_trc = {
5037 5038 5039 5040 5041 5042 5043
	.owner =        THIS_MODULE,
	.open =         lpfc_debugfs_slow_ring_trc_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_debugfs_read,
	.release =      lpfc_debugfs_release,
};

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static struct dentry *lpfc_debugfs_root = NULL;
static atomic_t lpfc_debugfs_hba_count;
5046 5047 5048 5049 5050 5051 5052 5053 5054 5055 5056 5057 5058 5059

/*
 * File operations for the iDiag debugfs
 */
#undef lpfc_idiag_op_pciCfg
static const struct file_operations lpfc_idiag_op_pciCfg = {
	.owner =        THIS_MODULE,
	.open =         lpfc_idiag_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_idiag_pcicfg_read,
	.write =        lpfc_idiag_pcicfg_write,
	.release =      lpfc_idiag_cmd_release,
};

5060 5061 5062 5063 5064 5065 5066 5067 5068 5069
#undef lpfc_idiag_op_barAcc
static const struct file_operations lpfc_idiag_op_barAcc = {
	.owner =        THIS_MODULE,
	.open =         lpfc_idiag_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_idiag_baracc_read,
	.write =        lpfc_idiag_baracc_write,
	.release =      lpfc_idiag_cmd_release,
};

5070 5071 5072 5073 5074 5075 5076 5077
#undef lpfc_idiag_op_queInfo
static const struct file_operations lpfc_idiag_op_queInfo = {
	.owner =        THIS_MODULE,
	.open =         lpfc_idiag_open,
	.read =         lpfc_idiag_queinfo_read,
	.release =      lpfc_idiag_release,
};

5078
#undef lpfc_idiag_op_queAcc
5079 5080 5081 5082 5083 5084 5085 5086 5087
static const struct file_operations lpfc_idiag_op_queAcc = {
	.owner =        THIS_MODULE,
	.open =         lpfc_idiag_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_idiag_queacc_read,
	.write =        lpfc_idiag_queacc_write,
	.release =      lpfc_idiag_cmd_release,
};

5088
#undef lpfc_idiag_op_drbAcc
5089 5090 5091 5092 5093 5094 5095 5096 5097
static const struct file_operations lpfc_idiag_op_drbAcc = {
	.owner =        THIS_MODULE,
	.open =         lpfc_idiag_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_idiag_drbacc_read,
	.write =        lpfc_idiag_drbacc_write,
	.release =      lpfc_idiag_cmd_release,
};

5098 5099 5100 5101 5102 5103 5104 5105 5106 5107 5108 5109 5110 5111 5112 5113 5114 5115 5116 5117 5118 5119 5120 5121 5122 5123 5124 5125 5126 5127
#undef lpfc_idiag_op_ctlAcc
static const struct file_operations lpfc_idiag_op_ctlAcc = {
	.owner =        THIS_MODULE,
	.open =         lpfc_idiag_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_idiag_ctlacc_read,
	.write =        lpfc_idiag_ctlacc_write,
	.release =      lpfc_idiag_cmd_release,
};

#undef lpfc_idiag_op_mbxAcc
static const struct file_operations lpfc_idiag_op_mbxAcc = {
	.owner =        THIS_MODULE,
	.open =         lpfc_idiag_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_idiag_mbxacc_read,
	.write =        lpfc_idiag_mbxacc_write,
	.release =      lpfc_idiag_cmd_release,
};

#undef lpfc_idiag_op_extAcc
static const struct file_operations lpfc_idiag_op_extAcc = {
	.owner =        THIS_MODULE,
	.open =         lpfc_idiag_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_idiag_extacc_read,
	.write =        lpfc_idiag_extacc_write,
	.release =      lpfc_idiag_cmd_release,
};

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#endif

5130 5131 5132 5133 5134 5135 5136 5137 5138 5139 5140 5141 5142 5143 5144 5145 5146 5147 5148 5149 5150 5151 5152 5153 5154 5155 5156 5157 5158 5159 5160 5161 5162 5163 5164 5165 5166 5167 5168 5169 5170
/* lpfc_idiag_mbxacc_dump_bsg_mbox - idiag debugfs dump bsg mailbox command
 * @phba: Pointer to HBA context object.
 * @dmabuf: Pointer to a DMA buffer descriptor.
 *
 * Description:
 * This routine dump a bsg pass-through non-embedded mailbox command with
 * external buffer.
 **/
void
lpfc_idiag_mbxacc_dump_bsg_mbox(struct lpfc_hba *phba, enum nemb_type nemb_tp,
				enum mbox_type mbox_tp, enum dma_type dma_tp,
				enum sta_type sta_tp,
				struct lpfc_dmabuf *dmabuf, uint32_t ext_buf)
{
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
	uint32_t *mbx_mbox_cmd, *mbx_dump_map, *mbx_dump_cnt, *mbx_word_cnt;
	char line_buf[LPFC_MBX_ACC_LBUF_SZ];
	int len = 0;
	uint32_t do_dump = 0;
	uint32_t *pword;
	uint32_t i;

	if (idiag.cmd.opcode != LPFC_IDIAG_BSG_MBXACC_DP)
		return;

	mbx_mbox_cmd = &idiag.cmd.data[IDIAG_MBXACC_MBCMD_INDX];
	mbx_dump_map = &idiag.cmd.data[IDIAG_MBXACC_DPMAP_INDX];
	mbx_dump_cnt = &idiag.cmd.data[IDIAG_MBXACC_DPCNT_INDX];
	mbx_word_cnt = &idiag.cmd.data[IDIAG_MBXACC_WDCNT_INDX];

	if (!(*mbx_dump_map & LPFC_MBX_DMP_ALL) ||
	    (*mbx_dump_cnt == 0) ||
	    (*mbx_word_cnt == 0))
		return;

	if (*mbx_mbox_cmd != 0x9B)
		return;

	if ((mbox_tp == mbox_rd) && (dma_tp == dma_mbox)) {
		if (*mbx_dump_map & LPFC_BSG_DMP_MBX_RD_MBX) {
			do_dump |= LPFC_BSG_DMP_MBX_RD_MBX;
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			pr_err("\nRead mbox command (x%x), "
5172 5173 5174 5175 5176 5177 5178
			       "nemb:0x%x, extbuf_cnt:%d:\n",
			       sta_tp, nemb_tp, ext_buf);
		}
	}
	if ((mbox_tp == mbox_rd) && (dma_tp == dma_ebuf)) {
		if (*mbx_dump_map & LPFC_BSG_DMP_MBX_RD_BUF) {
			do_dump |= LPFC_BSG_DMP_MBX_RD_BUF;
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			pr_err("\nRead mbox buffer (x%x), "
5180 5181 5182 5183 5184 5185 5186
			       "nemb:0x%x, extbuf_seq:%d:\n",
			       sta_tp, nemb_tp, ext_buf);
		}
	}
	if ((mbox_tp == mbox_wr) && (dma_tp == dma_mbox)) {
		if (*mbx_dump_map & LPFC_BSG_DMP_MBX_WR_MBX) {
			do_dump |= LPFC_BSG_DMP_MBX_WR_MBX;
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			pr_err("\nWrite mbox command (x%x), "
5188 5189 5190 5191 5192 5193 5194
			       "nemb:0x%x, extbuf_cnt:%d:\n",
			       sta_tp, nemb_tp, ext_buf);
		}
	}
	if ((mbox_tp == mbox_wr) && (dma_tp == dma_ebuf)) {
		if (*mbx_dump_map & LPFC_BSG_DMP_MBX_WR_BUF) {
			do_dump |= LPFC_BSG_DMP_MBX_WR_BUF;
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			pr_err("\nWrite mbox buffer (x%x), "
5196 5197 5198 5199 5200 5201 5202 5203 5204 5205 5206
			       "nemb:0x%x, extbuf_seq:%d:\n",
			       sta_tp, nemb_tp, ext_buf);
		}
	}

	/* dump buffer content */
	if (do_dump) {
		pword = (uint32_t *)dmabuf->virt;
		for (i = 0; i < *mbx_word_cnt; i++) {
			if (!(i % 8)) {
				if (i != 0)
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					pr_err("%s\n", line_buf);
5208 5209 5210 5211 5212 5213 5214 5215 5216 5217
				len = 0;
				len += snprintf(line_buf+len,
						LPFC_MBX_ACC_LBUF_SZ-len,
						"%03d: ", i);
			}
			len += snprintf(line_buf+len, LPFC_MBX_ACC_LBUF_SZ-len,
					"%08x ", (uint32_t)*pword);
			pword++;
		}
		if ((i - 1) % 8)
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			pr_err("%s\n", line_buf);
5219 5220 5221 5222 5223 5224 5225 5226 5227 5228 5229 5230 5231 5232 5233 5234 5235 5236 5237 5238 5239 5240 5241 5242 5243 5244 5245 5246 5247 5248 5249 5250 5251 5252 5253 5254 5255 5256 5257 5258 5259 5260 5261 5262 5263 5264 5265 5266
		(*mbx_dump_cnt)--;
	}

	/* Clean out command structure on reaching dump count */
	if (*mbx_dump_cnt == 0)
		memset(&idiag, 0, sizeof(idiag));
	return;
#endif
}

/* lpfc_idiag_mbxacc_dump_issue_mbox - idiag debugfs dump issue mailbox command
 * @phba: Pointer to HBA context object.
 * @dmabuf: Pointer to a DMA buffer descriptor.
 *
 * Description:
 * This routine dump a pass-through non-embedded mailbox command from issue
 * mailbox command.
 **/
void
lpfc_idiag_mbxacc_dump_issue_mbox(struct lpfc_hba *phba, MAILBOX_t *pmbox)
{
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
	uint32_t *mbx_dump_map, *mbx_dump_cnt, *mbx_word_cnt, *mbx_mbox_cmd;
	char line_buf[LPFC_MBX_ACC_LBUF_SZ];
	int len = 0;
	uint32_t *pword;
	uint8_t *pbyte;
	uint32_t i, j;

	if (idiag.cmd.opcode != LPFC_IDIAG_CMD_MBXACC_DP)
		return;

	mbx_mbox_cmd = &idiag.cmd.data[IDIAG_MBXACC_MBCMD_INDX];
	mbx_dump_map = &idiag.cmd.data[IDIAG_MBXACC_DPMAP_INDX];
	mbx_dump_cnt = &idiag.cmd.data[IDIAG_MBXACC_DPCNT_INDX];
	mbx_word_cnt = &idiag.cmd.data[IDIAG_MBXACC_WDCNT_INDX];

	if (!(*mbx_dump_map & LPFC_MBX_DMP_MBX_ALL) ||
	    (*mbx_dump_cnt == 0) ||
	    (*mbx_word_cnt == 0))
		return;

	if ((*mbx_mbox_cmd != LPFC_MBX_ALL_CMD) &&
	    (*mbx_mbox_cmd != pmbox->mbxCommand))
		return;

	/* dump buffer content */
	if (*mbx_dump_map & LPFC_MBX_DMP_MBX_WORD) {
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		pr_err("Mailbox command:0x%x dump by word:\n",
5268 5269 5270 5271 5272
		       pmbox->mbxCommand);
		pword = (uint32_t *)pmbox;
		for (i = 0; i < *mbx_word_cnt; i++) {
			if (!(i % 8)) {
				if (i != 0)
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					pr_err("%s\n", line_buf);
5274 5275 5276 5277 5278 5279 5280 5281 5282 5283 5284 5285
				len = 0;
				memset(line_buf, 0, LPFC_MBX_ACC_LBUF_SZ);
				len += snprintf(line_buf+len,
						LPFC_MBX_ACC_LBUF_SZ-len,
						"%03d: ", i);
			}
			len += snprintf(line_buf+len, LPFC_MBX_ACC_LBUF_SZ-len,
					"%08x ",
					((uint32_t)*pword) & 0xffffffff);
			pword++;
		}
		if ((i - 1) % 8)
J
James Smart 已提交
5286 5287
			pr_err("%s\n", line_buf);
		pr_err("\n");
5288 5289
	}
	if (*mbx_dump_map & LPFC_MBX_DMP_MBX_BYTE) {
J
James Smart 已提交
5290
		pr_err("Mailbox command:0x%x dump by byte:\n",
5291 5292 5293 5294 5295
		       pmbox->mbxCommand);
		pbyte = (uint8_t *)pmbox;
		for (i = 0; i < *mbx_word_cnt; i++) {
			if (!(i % 8)) {
				if (i != 0)
J
James Smart 已提交
5296
					pr_err("%s\n", line_buf);
5297 5298 5299 5300 5301 5302 5303 5304 5305 5306 5307 5308 5309 5310 5311 5312 5313
				len = 0;
				memset(line_buf, 0, LPFC_MBX_ACC_LBUF_SZ);
				len += snprintf(line_buf+len,
						LPFC_MBX_ACC_LBUF_SZ-len,
						"%03d: ", i);
			}
			for (j = 0; j < 4; j++) {
				len += snprintf(line_buf+len,
						LPFC_MBX_ACC_LBUF_SZ-len,
						"%02x",
						((uint8_t)*pbyte) & 0xff);
				pbyte++;
			}
			len += snprintf(line_buf+len,
					LPFC_MBX_ACC_LBUF_SZ-len, " ");
		}
		if ((i - 1) % 8)
J
James Smart 已提交
5314 5315
			pr_err("%s\n", line_buf);
		pr_err("\n");
5316 5317 5318 5319 5320 5321 5322 5323 5324 5325
	}
	(*mbx_dump_cnt)--;

	/* Clean out command structure on reaching dump count */
	if (*mbx_dump_cnt == 0)
		memset(&idiag, 0, sizeof(idiag));
	return;
#endif
}

5326
/**
5327
 * lpfc_debugfs_initialize - Initialize debugfs for a vport
5328 5329 5330 5331 5332 5333 5334 5335
 * @vport: The vport pointer to initialize.
 *
 * Description:
 * When Debugfs is configured this routine sets up the lpfc debugfs file system.
 * If not already created, this routine will create the lpfc directory, and
 * lpfcX directory (for this HBA), and vportX directory for this vport. It will
 * also create each file used to access lpfc specific debugfs information.
 **/
J
James Smart 已提交
5336 5337 5338
inline void
lpfc_debugfs_initialize(struct lpfc_vport *vport)
{
5339
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
J
James Smart 已提交
5340 5341 5342
	struct lpfc_hba   *phba = vport->phba;
	char name[64];
	uint32_t num, i;
5343
	bool pport_setup = false;
J
James Smart 已提交
5344 5345 5346 5347

	if (!lpfc_debugfs_enable)
		return;

5348
	/* Setup lpfc root directory */
J
James Smart 已提交
5349 5350 5351 5352
	if (!lpfc_debugfs_root) {
		lpfc_debugfs_root = debugfs_create_dir("lpfc", NULL);
		atomic_set(&lpfc_debugfs_hba_count, 0);
	}
5353 5354 5355
	if (!lpfc_debugfs_start_time)
		lpfc_debugfs_start_time = jiffies;

5356 5357
	/* Setup funcX directory for specific HBA PCI function */
	snprintf(name, sizeof(name), "fn%d", phba->brd_no);
J
James Smart 已提交
5358
	if (!phba->hba_debugfs_root) {
5359
		pport_setup = true;
J
James Smart 已提交
5360 5361 5362 5363
		phba->hba_debugfs_root =
			debugfs_create_dir(name, lpfc_debugfs_root);
		atomic_inc(&lpfc_debugfs_hba_count);
		atomic_set(&phba->debugfs_vport_count, 0);
5364

5365 5366 5367
		/* Setup hbqinfo */
		snprintf(name, sizeof(name), "hbqinfo");
		phba->debug_hbqinfo =
5368 5369 5370
			debugfs_create_file(name, S_IFREG | 0644,
					    phba->hba_debugfs_root,
					    phba, &lpfc_debugfs_op_hbqinfo);
5371

5372 5373 5374 5375 5376 5377 5378 5379
		/* Setup hdwqinfo */
		snprintf(name, sizeof(name), "hdwqinfo");
		phba->debug_hdwqinfo =
			debugfs_create_file(name, S_IFREG | 0644,
					    phba->hba_debugfs_root,
					    phba, &lpfc_debugfs_op_hdwqinfo);
		if (!phba->debug_hdwqinfo) {
			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
5380
					 "0511 Cant create debugfs hdwqinfo\n");
5381 5382 5383
			goto debug_failed;
		}

5384
		/* Setup dumpHBASlim */
5385 5386 5387 5388 5389 5390 5391 5392 5393
		if (phba->sli_rev < LPFC_SLI_REV4) {
			snprintf(name, sizeof(name), "dumpHBASlim");
			phba->debug_dumpHBASlim =
				debugfs_create_file(name,
					S_IFREG|S_IRUGO|S_IWUSR,
					phba->hba_debugfs_root,
					phba, &lpfc_debugfs_op_dumpHBASlim);
		} else
			phba->debug_dumpHBASlim = NULL;
5394 5395

		/* Setup dumpHostSlim */
5396 5397 5398 5399 5400 5401 5402 5403
		if (phba->sli_rev < LPFC_SLI_REV4) {
			snprintf(name, sizeof(name), "dumpHostSlim");
			phba->debug_dumpHostSlim =
				debugfs_create_file(name,
					S_IFREG|S_IRUGO|S_IWUSR,
					phba->hba_debugfs_root,
					phba, &lpfc_debugfs_op_dumpHostSlim);
		} else
5404
			phba->debug_dumpHostSlim = NULL;
5405

5406 5407 5408 5409 5410 5411 5412 5413 5414 5415 5416 5417 5418 5419
		/* Setup dumpData */
		snprintf(name, sizeof(name), "dumpData");
		phba->debug_dumpData =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
				 phba->hba_debugfs_root,
				 phba, &lpfc_debugfs_op_dumpData);

		/* Setup dumpDif */
		snprintf(name, sizeof(name), "dumpDif");
		phba->debug_dumpDif =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
				 phba->hba_debugfs_root,
				 phba, &lpfc_debugfs_op_dumpDif);

5420 5421 5422 5423 5424 5425 5426 5427
		/* Setup DIF Error Injections */
		snprintf(name, sizeof(name), "InjErrLBA");
		phba->debug_InjErrLBA =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
			phba->hba_debugfs_root,
			phba, &lpfc_debugfs_op_dif_err);
		phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF;

5428 5429 5430 5431 5432 5433 5434 5435 5436 5437 5438 5439
		snprintf(name, sizeof(name), "InjErrNPortID");
		phba->debug_InjErrNPortID =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
			phba->hba_debugfs_root,
			phba, &lpfc_debugfs_op_dif_err);

		snprintf(name, sizeof(name), "InjErrWWPN");
		phba->debug_InjErrWWPN =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
			phba->hba_debugfs_root,
			phba, &lpfc_debugfs_op_dif_err);

5440 5441 5442 5443 5444 5445 5446 5447 5448 5449 5450 5451 5452 5453 5454 5455 5456 5457
		snprintf(name, sizeof(name), "writeGuardInjErr");
		phba->debug_writeGuard =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
			phba->hba_debugfs_root,
			phba, &lpfc_debugfs_op_dif_err);

		snprintf(name, sizeof(name), "writeAppInjErr");
		phba->debug_writeApp =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
			phba->hba_debugfs_root,
			phba, &lpfc_debugfs_op_dif_err);

		snprintf(name, sizeof(name), "writeRefInjErr");
		phba->debug_writeRef =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
			phba->hba_debugfs_root,
			phba, &lpfc_debugfs_op_dif_err);

5458 5459 5460 5461 5462 5463
		snprintf(name, sizeof(name), "readGuardInjErr");
		phba->debug_readGuard =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
			phba->hba_debugfs_root,
			phba, &lpfc_debugfs_op_dif_err);

5464 5465 5466 5467 5468 5469 5470 5471 5472 5473 5474 5475
		snprintf(name, sizeof(name), "readAppInjErr");
		phba->debug_readApp =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
			phba->hba_debugfs_root,
			phba, &lpfc_debugfs_op_dif_err);

		snprintf(name, sizeof(name), "readRefInjErr");
		phba->debug_readRef =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
			phba->hba_debugfs_root,
			phba, &lpfc_debugfs_op_dif_err);

5476 5477 5478 5479 5480 5481 5482 5483 5484 5485 5486 5487
		/* Setup slow ring trace */
		if (lpfc_debugfs_max_slow_ring_trc) {
			num = lpfc_debugfs_max_slow_ring_trc - 1;
			if (num & lpfc_debugfs_max_slow_ring_trc) {
				/* Change to be a power of 2 */
				num = lpfc_debugfs_max_slow_ring_trc;
				i = 0;
				while (num > 1) {
					num = num >> 1;
					i++;
				}
				lpfc_debugfs_max_slow_ring_trc = (1 << i);
J
James Smart 已提交
5488
				pr_err("lpfc_debugfs_max_disc_trc changed to "
5489
				       "%d\n", lpfc_debugfs_max_disc_trc);
5490 5491 5492 5493 5494 5495 5496 5497 5498 5499 5500 5501 5502 5503
			}
		}

		snprintf(name, sizeof(name), "slow_ring_trace");
		phba->debug_slow_ring_trc =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
				 phba->hba_debugfs_root,
				 phba, &lpfc_debugfs_op_slow_ring_trc);
		if (!phba->slow_ring_trc) {
			phba->slow_ring_trc = kmalloc(
				(sizeof(struct lpfc_debugfs_trc) *
				lpfc_debugfs_max_slow_ring_trc),
				GFP_KERNEL);
			if (!phba->slow_ring_trc) {
5504
				lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
5505
						 "0416 Cannot create debugfs "
5506
						 "slow_ring buffer\n");
5507 5508 5509 5510 5511 5512 5513
				goto debug_failed;
			}
			atomic_set(&phba->slow_ring_trc_cnt, 0);
			memset(phba->slow_ring_trc, 0,
				(sizeof(struct lpfc_debugfs_trc) *
				lpfc_debugfs_max_slow_ring_trc));
		}
J
James Smart 已提交
5514

5515 5516 5517 5518 5519 5520 5521 5522 5523 5524 5525 5526 5527 5528 5529 5530 5531 5532 5533 5534 5535 5536 5537 5538 5539 5540
		snprintf(name, sizeof(name), "nvmeio_trc");
		phba->debug_nvmeio_trc =
			debugfs_create_file(name, 0644,
					    phba->hba_debugfs_root,
					    phba, &lpfc_debugfs_op_nvmeio_trc);

		atomic_set(&phba->nvmeio_trc_cnt, 0);
		if (lpfc_debugfs_max_nvmeio_trc) {
			num = lpfc_debugfs_max_nvmeio_trc - 1;
			if (num & lpfc_debugfs_max_disc_trc) {
				/* Change to be a power of 2 */
				num = lpfc_debugfs_max_nvmeio_trc;
				i = 0;
				while (num > 1) {
					num = num >> 1;
					i++;
				}
				lpfc_debugfs_max_nvmeio_trc = (1 << i);
				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
						"0575 lpfc_debugfs_max_nvmeio_trc "
						"changed to %d\n",
						lpfc_debugfs_max_nvmeio_trc);
			}
			phba->nvmeio_trc_size = lpfc_debugfs_max_nvmeio_trc;

			/* Allocate trace buffer and initialize */
5541
			phba->nvmeio_trc = kzalloc(
5542 5543 5544 5545 5546 5547 5548 5549 5550 5551 5552 5553 5554 5555 5556 5557 5558 5559 5560
				(sizeof(struct lpfc_debugfs_nvmeio_trc) *
				phba->nvmeio_trc_size), GFP_KERNEL);

			if (!phba->nvmeio_trc) {
				lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
						"0576 Cannot create debugfs "
						"nvmeio_trc buffer\n");
				goto nvmeio_off;
			}
			phba->nvmeio_trc_on = 1;
			phba->nvmeio_trc_output_idx = 0;
			phba->nvmeio_trc = NULL;
		} else {
nvmeio_off:
			phba->nvmeio_trc_size = 0;
			phba->nvmeio_trc_on = 0;
			phba->nvmeio_trc_output_idx = 0;
			phba->nvmeio_trc = NULL;
		}
J
James Smart 已提交
5561 5562 5563 5564 5565 5566 5567 5568 5569
	}

	snprintf(name, sizeof(name), "vport%d", vport->vpi);
	if (!vport->vport_debugfs_root) {
		vport->vport_debugfs_root =
			debugfs_create_dir(name, phba->hba_debugfs_root);
		atomic_inc(&phba->debugfs_vport_count);
	}

5570 5571 5572 5573 5574 5575 5576 5577 5578 5579 5580
	if (lpfc_debugfs_max_disc_trc) {
		num = lpfc_debugfs_max_disc_trc - 1;
		if (num & lpfc_debugfs_max_disc_trc) {
			/* Change to be a power of 2 */
			num = lpfc_debugfs_max_disc_trc;
			i = 0;
			while (num > 1) {
				num = num >> 1;
				i++;
			}
			lpfc_debugfs_max_disc_trc = (1 << i);
J
James Smart 已提交
5581
			pr_err("lpfc_debugfs_max_disc_trc changed to %d\n",
5582
			       lpfc_debugfs_max_disc_trc);
5583 5584
		}
	}
J
James Smart 已提交
5585

5586
	vport->disc_trc = kzalloc(
5587
		(sizeof(struct lpfc_debugfs_trc) * lpfc_debugfs_max_disc_trc),
J
James Smart 已提交
5588 5589
		GFP_KERNEL);

5590
	if (!vport->disc_trc) {
5591
		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
5592
				 "0418 Cannot create debugfs disc trace "
5593
				 "buffer\n");
J
James Smart 已提交
5594
		goto debug_failed;
5595 5596
	}
	atomic_set(&vport->disc_trc_cnt, 0);
J
James Smart 已提交
5597 5598 5599 5600 5601 5602 5603 5604 5605 5606 5607

	snprintf(name, sizeof(name), "discovery_trace");
	vport->debug_disc_trc =
		debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
				 vport->vport_debugfs_root,
				 vport, &lpfc_debugfs_op_disc_trc);
	snprintf(name, sizeof(name), "nodelist");
	vport->debug_nodelist =
		debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
				 vport->vport_debugfs_root,
				 vport, &lpfc_debugfs_op_nodelist);
5608

5609 5610 5611 5612 5613 5614 5615 5616 5617 5618 5619 5620 5621 5622 5623 5624 5625 5626
	snprintf(name, sizeof(name), "nvmestat");
	vport->debug_nvmestat =
		debugfs_create_file(name, 0644,
				    vport->vport_debugfs_root,
				    vport, &lpfc_debugfs_op_nvmestat);

	snprintf(name, sizeof(name), "nvmektime");
	vport->debug_nvmektime =
		debugfs_create_file(name, 0644,
				    vport->vport_debugfs_root,
				    vport, &lpfc_debugfs_op_nvmektime);

	snprintf(name, sizeof(name), "cpucheck");
	vport->debug_cpucheck =
		debugfs_create_file(name, 0644,
				    vport->vport_debugfs_root,
				    vport, &lpfc_debugfs_op_cpucheck);

5627 5628 5629 5630 5631 5632 5633 5634
	/*
	 * The following section is for additional directories/files for the
	 * physical port.
	 */

	if (!pport_setup)
		goto debug_failed;

5635 5636 5637 5638 5639 5640 5641 5642 5643 5644 5645 5646 5647 5648 5649 5650 5651 5652 5653 5654 5655 5656 5657
	/*
	 * iDiag debugfs root entry points for SLI4 device only
	 */
	if (phba->sli_rev < LPFC_SLI_REV4)
		goto debug_failed;

	snprintf(name, sizeof(name), "iDiag");
	if (!phba->idiag_root) {
		phba->idiag_root =
			debugfs_create_dir(name, phba->hba_debugfs_root);
		/* Initialize iDiag data structure */
		memset(&idiag, 0, sizeof(idiag));
	}

	/* iDiag read PCI config space */
	snprintf(name, sizeof(name), "pciCfg");
	if (!phba->idiag_pci_cfg) {
		phba->idiag_pci_cfg =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
				phba->idiag_root, phba, &lpfc_idiag_op_pciCfg);
		idiag.offset.last_rd = 0;
	}

5658 5659 5660 5661 5662 5663 5664 5665 5666
	/* iDiag PCI BAR access */
	snprintf(name, sizeof(name), "barAcc");
	if (!phba->idiag_bar_acc) {
		phba->idiag_bar_acc =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
				phba->idiag_root, phba, &lpfc_idiag_op_barAcc);
		idiag.offset.last_rd = 0;
	}

5667 5668 5669 5670 5671 5672 5673 5674
	/* iDiag get PCI function queue information */
	snprintf(name, sizeof(name), "queInfo");
	if (!phba->idiag_que_info) {
		phba->idiag_que_info =
			debugfs_create_file(name, S_IFREG|S_IRUGO,
			phba->idiag_root, phba, &lpfc_idiag_op_queInfo);
	}

5675 5676 5677 5678 5679 5680 5681 5682 5683 5684 5685 5686 5687 5688 5689 5690
	/* iDiag access PCI function queue */
	snprintf(name, sizeof(name), "queAcc");
	if (!phba->idiag_que_acc) {
		phba->idiag_que_acc =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
				phba->idiag_root, phba, &lpfc_idiag_op_queAcc);
	}

	/* iDiag access PCI function doorbell registers */
	snprintf(name, sizeof(name), "drbAcc");
	if (!phba->idiag_drb_acc) {
		phba->idiag_drb_acc =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
				phba->idiag_root, phba, &lpfc_idiag_op_drbAcc);
	}

5691 5692 5693 5694 5695 5696 5697 5698 5699 5700 5701 5702 5703 5704 5705 5706 5707 5708 5709 5710 5711 5712 5713 5714 5715 5716 5717 5718
	/* iDiag access PCI function control registers */
	snprintf(name, sizeof(name), "ctlAcc");
	if (!phba->idiag_ctl_acc) {
		phba->idiag_ctl_acc =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
				phba->idiag_root, phba, &lpfc_idiag_op_ctlAcc);
	}

	/* iDiag access mbox commands */
	snprintf(name, sizeof(name), "mbxAcc");
	if (!phba->idiag_mbx_acc) {
		phba->idiag_mbx_acc =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
				phba->idiag_root, phba, &lpfc_idiag_op_mbxAcc);
	}

	/* iDiag extents access commands */
	if (phba->sli4_hba.extents_in_use) {
		snprintf(name, sizeof(name), "extAcc");
		if (!phba->idiag_ext_acc) {
			phba->idiag_ext_acc =
				debugfs_create_file(name,
						    S_IFREG|S_IRUGO|S_IWUSR,
						    phba->idiag_root, phba,
						    &lpfc_idiag_op_extAcc);
		}
	}

J
James Smart 已提交
5719 5720 5721 5722 5723
debug_failed:
	return;
#endif
}

5724
/**
5725
 * lpfc_debugfs_terminate -  Tear down debugfs infrastructure for this vport
5726 5727 5728 5729 5730 5731 5732 5733 5734
 * @vport: The vport pointer to remove from debugfs.
 *
 * Description:
 * When Debugfs is configured this routine removes debugfs file system elements
 * that are specific to this vport. It also checks to see if there are any
 * users left for the debugfs directories associated with the HBA and driver. If
 * this is the last user of the HBA directory or driver directory then it will
 * remove those from the debugfs infrastructure as well.
 **/
J
James Smart 已提交
5735 5736 5737
inline void
lpfc_debugfs_terminate(struct lpfc_vport *vport)
{
5738
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
J
James Smart 已提交
5739 5740
	struct lpfc_hba   *phba = vport->phba;

5741 5742
	kfree(vport->disc_trc);
	vport->disc_trc = NULL;
5743 5744 5745 5746 5747 5748 5749 5750 5751 5752 5753 5754 5755 5756 5757 5758

	debugfs_remove(vport->debug_disc_trc); /* discovery_trace */
	vport->debug_disc_trc = NULL;

	debugfs_remove(vport->debug_nodelist); /* nodelist */
	vport->debug_nodelist = NULL;

	debugfs_remove(vport->debug_nvmestat); /* nvmestat */
	vport->debug_nvmestat = NULL;

	debugfs_remove(vport->debug_nvmektime); /* nvmektime */
	vport->debug_nvmektime = NULL;

	debugfs_remove(vport->debug_cpucheck); /* cpucheck */
	vport->debug_cpucheck = NULL;

J
James Smart 已提交
5759 5760 5761 5762 5763
	if (vport->vport_debugfs_root) {
		debugfs_remove(vport->vport_debugfs_root); /* vportX */
		vport->vport_debugfs_root = NULL;
		atomic_dec(&phba->debugfs_vport_count);
	}
5764

J
James Smart 已提交
5765
	if (atomic_read(&phba->debugfs_vport_count) == 0) {
5766

5767 5768
		debugfs_remove(phba->debug_hbqinfo); /* hbqinfo */
		phba->debug_hbqinfo = NULL;
5769

5770 5771 5772
		debugfs_remove(phba->debug_hdwqinfo); /* hdwqinfo */
		phba->debug_hdwqinfo = NULL;

5773 5774 5775 5776 5777 5778 5779 5780 5781 5782 5783 5784 5785 5786 5787 5788 5789 5790 5791 5792 5793 5794 5795 5796 5797 5798 5799 5800 5801 5802 5803 5804 5805 5806 5807 5808 5809 5810
		debugfs_remove(phba->debug_dumpHBASlim); /* HBASlim */
		phba->debug_dumpHBASlim = NULL;

		debugfs_remove(phba->debug_dumpHostSlim); /* HostSlim */
		phba->debug_dumpHostSlim = NULL;

		debugfs_remove(phba->debug_dumpData); /* dumpData */
		phba->debug_dumpData = NULL;

		debugfs_remove(phba->debug_dumpDif); /* dumpDif */
		phba->debug_dumpDif = NULL;

		debugfs_remove(phba->debug_InjErrLBA); /* InjErrLBA */
		phba->debug_InjErrLBA = NULL;

		debugfs_remove(phba->debug_InjErrNPortID);
		phba->debug_InjErrNPortID = NULL;

		debugfs_remove(phba->debug_InjErrWWPN); /* InjErrWWPN */
		phba->debug_InjErrWWPN = NULL;

		debugfs_remove(phba->debug_writeGuard); /* writeGuard */
		phba->debug_writeGuard = NULL;

		debugfs_remove(phba->debug_writeApp); /* writeApp */
		phba->debug_writeApp = NULL;

		debugfs_remove(phba->debug_writeRef); /* writeRef */
		phba->debug_writeRef = NULL;

		debugfs_remove(phba->debug_readGuard); /* readGuard */
		phba->debug_readGuard = NULL;

		debugfs_remove(phba->debug_readApp); /* readApp */
		phba->debug_readApp = NULL;

		debugfs_remove(phba->debug_readRef); /* readRef */
		phba->debug_readRef = NULL;
5811

5812 5813
		kfree(phba->slow_ring_trc);
		phba->slow_ring_trc = NULL;
5814 5815 5816 5817 5818 5819 5820 5821 5822 5823

		/* slow_ring_trace */
		debugfs_remove(phba->debug_slow_ring_trc);
		phba->debug_slow_ring_trc = NULL;

		debugfs_remove(phba->debug_nvmeio_trc);
		phba->debug_nvmeio_trc = NULL;

		kfree(phba->nvmeio_trc);
		phba->nvmeio_trc = NULL;
5824

5825 5826 5827 5828
		/*
		 * iDiag release
		 */
		if (phba->sli_rev == LPFC_SLI_REV4) {
5829 5830 5831 5832 5833 5834 5835 5836 5837 5838 5839 5840 5841 5842 5843 5844 5845 5846 5847 5848 5849 5850 5851 5852 5853 5854 5855 5856 5857 5858 5859
			/* iDiag extAcc */
			debugfs_remove(phba->idiag_ext_acc);
			phba->idiag_ext_acc = NULL;

			/* iDiag mbxAcc */
			debugfs_remove(phba->idiag_mbx_acc);
			phba->idiag_mbx_acc = NULL;

			/* iDiag ctlAcc */
			debugfs_remove(phba->idiag_ctl_acc);
			phba->idiag_ctl_acc = NULL;

			/* iDiag drbAcc */
			debugfs_remove(phba->idiag_drb_acc);
			phba->idiag_drb_acc = NULL;

			/* iDiag queAcc */
			debugfs_remove(phba->idiag_que_acc);
			phba->idiag_que_acc = NULL;

			/* iDiag queInfo */
			debugfs_remove(phba->idiag_que_info);
			phba->idiag_que_info = NULL;

			/* iDiag barAcc */
			debugfs_remove(phba->idiag_bar_acc);
			phba->idiag_bar_acc = NULL;

			/* iDiag pciCfg */
			debugfs_remove(phba->idiag_pci_cfg);
			phba->idiag_pci_cfg = NULL;
5860 5861

			/* Finally remove the iDiag debugfs root */
5862 5863
			debugfs_remove(phba->idiag_root);
			phba->idiag_root = NULL;
5864 5865
		}

5866
		if (phba->hba_debugfs_root) {
5867
			debugfs_remove(phba->hba_debugfs_root); /* fnX */
5868 5869 5870 5871
			phba->hba_debugfs_root = NULL;
			atomic_dec(&lpfc_debugfs_hba_count);
		}

5872 5873 5874 5875
		if (atomic_read(&lpfc_debugfs_hba_count) == 0) {
			debugfs_remove(lpfc_debugfs_root); /* lpfc */
			lpfc_debugfs_root = NULL;
		}
J
James Smart 已提交
5876 5877
	}
#endif
5878
	return;
J
James Smart 已提交
5879
}
5880 5881 5882 5883 5884 5885 5886 5887 5888 5889 5890 5891 5892 5893 5894 5895

/*
 * Driver debug utility routines outside of debugfs. The debug utility
 * routines implemented here is intended to be used in the instrumented
 * debug driver for debugging host or port issues.
 */

/**
 * lpfc_debug_dump_all_queues - dump all the queues with a hba
 * @phba: Pointer to HBA context object.
 *
 * This function dumps entries of all the queues asociated with the @phba.
 **/
void
lpfc_debug_dump_all_queues(struct lpfc_hba *phba)
{
5896
	int idx;
5897 5898 5899 5900

	/*
	 * Dump Work Queues (WQs)
	 */
5901 5902
	lpfc_debug_dump_wq(phba, DUMP_MBX, 0);
	lpfc_debug_dump_wq(phba, DUMP_ELS, 0);
5903
	lpfc_debug_dump_wq(phba, DUMP_NVMELS, 0);
5904

5905
	for (idx = 0; idx < phba->cfg_hdw_queue; idx++)
5906
		lpfc_debug_dump_wq(phba, DUMP_FCP, idx);
5907

5908 5909 5910 5911
	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
		for (idx = 0; idx < phba->cfg_hdw_queue; idx++)
			lpfc_debug_dump_wq(phba, DUMP_NVME, idx);
	}
5912

5913 5914 5915 5916 5917
	lpfc_debug_dump_hdr_rq(phba);
	lpfc_debug_dump_dat_rq(phba);
	/*
	 * Dump Complete Queues (CQs)
	 */
5918 5919
	lpfc_debug_dump_cq(phba, DUMP_MBX, 0);
	lpfc_debug_dump_cq(phba, DUMP_ELS, 0);
5920
	lpfc_debug_dump_cq(phba, DUMP_NVMELS, 0);
5921

5922
	for (idx = 0; idx < phba->cfg_hdw_queue; idx++)
5923
		lpfc_debug_dump_cq(phba, DUMP_FCP, idx);
5924

5925 5926 5927 5928
	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
		for (idx = 0; idx < phba->cfg_hdw_queue; idx++)
			lpfc_debug_dump_cq(phba, DUMP_NVME, idx);
	}
5929

5930 5931 5932
	/*
	 * Dump Event Queues (EQs)
	 */
5933
	for (idx = 0; idx < phba->cfg_hdw_queue; idx++)
5934
		lpfc_debug_dump_hba_eq(phba, idx);
5935
}