drivers/scsi/lpfc/lpfc_attr.c

/*******************************************************************
 * This file is part of the Emulex Linux Device Driver for         *
 * Fibre Channel Host Bus Adapters.                                *
 * Copyright (C) 2017 Broadcom. All Rights Reserved. The term      *
 * “Broadcom” refers to Broadcom Limited and/or its subsidiaries.  *
 * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
 * EMULEX and SLI are trademarks of Emulex.                        *
 * www.broadcom.com                                                *
 * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
 *                                                                 *
 * 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/ctype.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/aer.h>
#include <linux/gfp.h>
#include <linux/kernel.h>

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

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

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

#define LPFC_DEF_DEVLOSS_TMO	30
#define LPFC_MIN_DEVLOSS_TMO	1
#define LPFC_MAX_DEVLOSS_TMO	255

#define LPFC_DEF_MRQ_POST	512
#define LPFC_MIN_MRQ_POST	512
#define LPFC_MAX_MRQ_POST	2048

/*
 * Write key size should be multiple of 4. If write key is changed
 * make sure that library write key is also changed.
 */
#define LPFC_REG_WRITE_KEY_SIZE	4
#define LPFC_REG_WRITE_KEY	"EMLX"

/**
 * lpfc_jedec_to_ascii - Hex to ascii convertor according to JEDEC rules
 * @incr: integer to convert.
 * @hdw: ascii string holding converted integer plus a string terminator.
 *
 * Description:
 * JEDEC Joint Electron Device Engineering Council.
 * Convert a 32 bit integer composed of 8 nibbles into an 8 byte ascii
 * character string. The string is then terminated with a NULL in byte 9.
 * Hex 0-9 becomes ascii '0' to '9'.
 * Hex a-f becomes ascii '=' to 'B' capital B.
 *
 * Notes:
 * Coded for 32 bit integers only.
 **/
static void
lpfc_jedec_to_ascii(int incr, char hdw[])
{
	int i, j;
	for (i = 0; i < 8; i++) {
		j = (incr & 0xf);
		if (j <= 9)
			hdw[7 - i] = 0x30 +  j;
		 else
			hdw[7 - i] = 0x61 + j - 10;
		incr = (incr >> 4);
	}
	hdw[8] = 0;
	return;
}

/**
 * lpfc_drvr_version_show - Return the Emulex driver string with version number
 * @dev: class unused variable.
 * @attr: device attribute, not used.
 * @buf: on return contains the module description text.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_drvr_version_show(struct device *dev, struct device_attribute *attr,
		       char *buf)
{
	return snprintf(buf, PAGE_SIZE, LPFC_MODULE_DESC "\n");
}

/**
 * lpfc_enable_fip_show - Return the fip mode of the HBA
 * @dev: class unused variable.
 * @attr: device attribute, not used.
 * @buf: on return contains the module description text.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_enable_fip_show(struct device *dev, struct device_attribute *attr,
		       char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	if (phba->hba_flag & HBA_FIP_SUPPORT)
		return snprintf(buf, PAGE_SIZE, "1\n");
	else
		return snprintf(buf, PAGE_SIZE, "0\n");
}

static ssize_t
lpfc_nvme_info_show(struct device *dev, struct device_attribute *attr,
		    char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_vport *vport = shost_priv(shost);
	struct lpfc_hba   *phba = vport->phba;
	struct lpfc_nvmet_tgtport *tgtp;
	struct nvme_fc_local_port *localport;
	struct lpfc_nodelist *ndlp;
	struct nvme_fc_remote_port *nrport;
	uint64_t data1, data2, data3, tot;
	char *statep;
	int len = 0;

	if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)) {
		len += snprintf(buf, PAGE_SIZE, "NVME Disabled\n");
		return len;
	}
	if (phba->nvmet_support) {
		if (!phba->targetport) {
			len = snprintf(buf, PAGE_SIZE,
					"NVME Target: x%llx is not allocated\n",
					wwn_to_u64(vport->fc_portname.u.wwn));
			return len;
		}
		/* Port state is only one of two values for now. */
		if (phba->targetport->port_id)
			statep = "REGISTERED";
		else
			statep = "INIT";
		len += snprintf(buf + len, PAGE_SIZE - len,
				"NVME Target Enabled  State %s\n",
				statep);
		len += snprintf(buf + len, PAGE_SIZE - len,
				"%s%d WWPN x%llx WWNN x%llx DID x%06x\n",
				"NVME Target: lpfc",
				phba->brd_no,
				wwn_to_u64(vport->fc_portname.u.wwn),
				wwn_to_u64(vport->fc_nodename.u.wwn),
				phba->targetport->port_id);

		len += snprintf(buf + len, PAGE_SIZE - len,
				"\nNVME Target: Statistics\n");
		tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
		len += snprintf(buf+len, PAGE_SIZE-len,
				"LS: Rcv %08x Drop %08x Abort %08x\n",
				atomic_read(&tgtp->rcv_ls_req_in),
				atomic_read(&tgtp->rcv_ls_req_drop),
				atomic_read(&tgtp->xmt_ls_abort));
		if (atomic_read(&tgtp->rcv_ls_req_in) !=
		    atomic_read(&tgtp->rcv_ls_req_out)) {
			len += snprintf(buf+len, PAGE_SIZE-len,
					"Rcv LS: in %08x != out %08x\n",
					atomic_read(&tgtp->rcv_ls_req_in),
					atomic_read(&tgtp->rcv_ls_req_out));
		}

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

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

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

		len += snprintf(buf+len, PAGE_SIZE-len,
				"FCP Rsp: RD %08x rsp %08x WR %08x rsp %08x "
				"drop %08x\n",
				atomic_read(&tgtp->xmt_fcp_read),
				atomic_read(&tgtp->xmt_fcp_read_rsp),
				atomic_read(&tgtp->xmt_fcp_write),
				atomic_read(&tgtp->xmt_fcp_rsp),
				atomic_read(&tgtp->xmt_fcp_drop));

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

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

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

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

		len += snprintf(buf + len, PAGE_SIZE - len,
				"IO_CTX: %08x  WAIT: cur %08x tot %08x\n"
				"CTX Outstanding %08llx\n",
				phba->sli4_hba.nvmet_xri_cnt,
				phba->sli4_hba.nvmet_io_wait_cnt,
				phba->sli4_hba.nvmet_io_wait_total,
				tot);

		len +=  snprintf(buf+len, PAGE_SIZE-len, "\n");
		return len;
	}

	localport = vport->localport;
	if (!localport) {
		len = snprintf(buf, PAGE_SIZE,
				"NVME Initiator x%llx is not allocated\n",
				wwn_to_u64(vport->fc_portname.u.wwn));
		return len;
	}
	len = snprintf(buf, PAGE_SIZE, "NVME Initiator Enabled\n");

	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, PAGE_SIZE - len,
			"%s%d WWPN x%llx WWNN x%llx DID x%06x %s\n",
			"NVME LPORT lpfc",
			phba->brd_no,
			wwn_to_u64(vport->fc_portname.u.wwn),
			wwn_to_u64(vport->fc_nodename.u.wwn),
			localport->port_id, statep);

	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
		if (!ndlp->nrport)
			continue;

		/* local short-hand pointer. */
		nrport = ndlp->nrport->remoteport;

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

		/* Tab in to show lport ownership. */
		len += snprintf(buf + len, PAGE_SIZE - len,
				"NVME RPORT       ");
		if (phba->brd_no >= 10)
			len += snprintf(buf + len, PAGE_SIZE - len, " ");

		len += snprintf(buf + len, PAGE_SIZE - len, "WWPN x%llx ",
				nrport->port_name);
		len += snprintf(buf + len, PAGE_SIZE - len, "WWNN x%llx ",
				nrport->node_name);
		len += snprintf(buf + len, PAGE_SIZE - len, "DID x%06x ",
				nrport->port_id);

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

		len +=  snprintf(buf + len, PAGE_SIZE - len, "%s  ", statep);
		/* Terminate the string. */
		len +=  snprintf(buf + len, PAGE_SIZE - len, "\n");
	}
	spin_unlock_irq(shost->host_lock);

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

	tot = atomic_read(&phba->fc4NvmeIoCmpls);
	data1 = atomic_read(&phba->fc4NvmeInputRequests);
	data2 = atomic_read(&phba->fc4NvmeOutputRequests);
	data3 = atomic_read(&phba->fc4NvmeControlRequests);
	len += snprintf(buf+len, PAGE_SIZE-len,
			"FCP: Rd %016llx Wr %016llx IO %016llx\n",
			data1, data2, data3);

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

static ssize_t
lpfc_bg_info_show(struct device *dev, struct device_attribute *attr,
		  char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	if (phba->cfg_enable_bg)
		if (phba->sli3_options & LPFC_SLI3_BG_ENABLED)
			return snprintf(buf, PAGE_SIZE, "BlockGuard Enabled\n");
		else
			return snprintf(buf, PAGE_SIZE,
					"BlockGuard Not Supported\n");
	else
			return snprintf(buf, PAGE_SIZE,
					"BlockGuard Disabled\n");
}

static ssize_t
lpfc_bg_guard_err_show(struct device *dev, struct device_attribute *attr,
		       char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	return snprintf(buf, PAGE_SIZE, "%llu\n",
			(unsigned long long)phba->bg_guard_err_cnt);
}

static ssize_t
lpfc_bg_apptag_err_show(struct device *dev, struct device_attribute *attr,
			char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	return snprintf(buf, PAGE_SIZE, "%llu\n",
			(unsigned long long)phba->bg_apptag_err_cnt);
}

static ssize_t
lpfc_bg_reftag_err_show(struct device *dev, struct device_attribute *attr,
			char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	return snprintf(buf, PAGE_SIZE, "%llu\n",
			(unsigned long long)phba->bg_reftag_err_cnt);
}

/**
 * lpfc_info_show - Return some pci info about the host in ascii
 * @dev: class converted to a Scsi_host structure.
 * @attr: device attribute, not used.
 * @buf: on return contains the formatted text from lpfc_info().
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_info_show(struct device *dev, struct device_attribute *attr,
	       char *buf)
{
	struct Scsi_Host *host = class_to_shost(dev);

	return snprintf(buf, PAGE_SIZE, "%s\n",lpfc_info(host));
}

/**
 * lpfc_serialnum_show - Return the hba serial number in ascii
 * @dev: class converted to a Scsi_host structure.
 * @attr: device attribute, not used.
 * @buf: on return contains the formatted text serial number.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_serialnum_show(struct device *dev, struct device_attribute *attr,
		    char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	return snprintf(buf, PAGE_SIZE, "%s\n",phba->SerialNumber);
}

/**
 * lpfc_temp_sensor_show - Return the temperature sensor level
 * @dev: class converted to a Scsi_host structure.
 * @attr: device attribute, not used.
 * @buf: on return contains the formatted support level.
 *
 * Description:
 * Returns a number indicating the temperature sensor level currently
 * supported, zero or one in ascii.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_temp_sensor_show(struct device *dev, struct device_attribute *attr,
		      char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	return snprintf(buf, PAGE_SIZE, "%d\n",phba->temp_sensor_support);
}

/**
 * lpfc_modeldesc_show - Return the model description of the hba
 * @dev: class converted to a Scsi_host structure.
 * @attr: device attribute, not used.
 * @buf: on return contains the scsi vpd model description.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_modeldesc_show(struct device *dev, struct device_attribute *attr,
		    char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelDesc);
}

/**
 * lpfc_modelname_show - Return the model name of the hba
 * @dev: class converted to a Scsi_host structure.
 * @attr: device attribute, not used.
 * @buf: on return contains the scsi vpd model name.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_modelname_show(struct device *dev, struct device_attribute *attr,
		    char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelName);
}

/**
 * lpfc_programtype_show - Return the program type of the hba
 * @dev: class converted to a Scsi_host structure.
 * @attr: device attribute, not used.
 * @buf: on return contains the scsi vpd program type.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_programtype_show(struct device *dev, struct device_attribute *attr,
		      char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	return snprintf(buf, PAGE_SIZE, "%s\n",phba->ProgramType);
}

/**
 * lpfc_mlomgmt_show - Return the Menlo Maintenance sli flag
 * @dev: class converted to a Scsi_host structure.
 * @attr: device attribute, not used.
 * @buf: on return contains the Menlo Maintenance sli flag.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_mlomgmt_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	return snprintf(buf, PAGE_SIZE, "%d\n",
		(phba->sli.sli_flag & LPFC_MENLO_MAINT));
}

/**
 * lpfc_vportnum_show - Return the port number in ascii of the hba
 * @dev: class converted to a Scsi_host structure.
 * @attr: device attribute, not used.
 * @buf: on return contains scsi vpd program type.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_vportnum_show(struct device *dev, struct device_attribute *attr,
		   char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	return snprintf(buf, PAGE_SIZE, "%s\n",phba->Port);
}

/**
 * lpfc_fwrev_show - Return the firmware rev running in the hba
 * @dev: class converted to a Scsi_host structure.
 * @attr: device attribute, not used.
 * @buf: on return contains the scsi vpd program type.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_fwrev_show(struct device *dev, struct device_attribute *attr,
		char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	uint32_t if_type;
	uint8_t sli_family;
	char fwrev[FW_REV_STR_SIZE];
	int len;

	lpfc_decode_firmware_rev(phba, fwrev, 1);
	if_type = phba->sli4_hba.pc_sli4_params.if_type;
	sli_family = phba->sli4_hba.pc_sli4_params.sli_family;

	if (phba->sli_rev < LPFC_SLI_REV4)
		len = snprintf(buf, PAGE_SIZE, "%s, sli-%d\n",
			       fwrev, phba->sli_rev);
	else
		len = snprintf(buf, PAGE_SIZE, "%s, sli-%d:%d:%x\n",
			       fwrev, phba->sli_rev, if_type, sli_family);

	return len;
}

/**
 * lpfc_hdw_show - Return the jedec information about the hba
 * @dev: class converted to a Scsi_host structure.
 * @attr: device attribute, not used.
 * @buf: on return contains the scsi vpd program type.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_hdw_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	char hdw[9];
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	lpfc_vpd_t *vp = &phba->vpd;

	lpfc_jedec_to_ascii(vp->rev.biuRev, hdw);
	return snprintf(buf, PAGE_SIZE, "%s\n", hdw);
}

/**
 * lpfc_option_rom_version_show - Return the adapter ROM FCode version
 * @dev: class converted to a Scsi_host structure.
 * @attr: device attribute, not used.
 * @buf: on return contains the ROM and FCode ascii strings.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_option_rom_version_show(struct device *dev, struct device_attribute *attr,
			     char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	char fwrev[FW_REV_STR_SIZE];

	if (phba->sli_rev < LPFC_SLI_REV4)
		return snprintf(buf, PAGE_SIZE, "%s\n", phba->OptionROMVersion);

	lpfc_decode_firmware_rev(phba, fwrev, 1);
	return snprintf(buf, PAGE_SIZE, "%s\n", fwrev);
}

/**
 * lpfc_state_show - Return the link state of the port
 * @dev: class converted to a Scsi_host structure.
 * @attr: device attribute, not used.
 * @buf: on return contains text describing the state of the link.
 *
 * Notes:
 * The switch statement has no default so zero will be returned.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_link_state_show(struct device *dev, struct device_attribute *attr,
		     char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	int  len = 0;

	switch (phba->link_state) {
	case LPFC_LINK_UNKNOWN:
	case LPFC_WARM_START:
	case LPFC_INIT_START:
	case LPFC_INIT_MBX_CMDS:
	case LPFC_LINK_DOWN:
	case LPFC_HBA_ERROR:
		if (phba->hba_flag & LINK_DISABLED)
			len += snprintf(buf + len, PAGE_SIZE-len,
				"Link Down - User disabled\n");
		else
			len += snprintf(buf + len, PAGE_SIZE-len,
				"Link Down\n");
		break;
	case LPFC_LINK_UP:
	case LPFC_CLEAR_LA:
	case LPFC_HBA_READY:
		len += snprintf(buf + len, PAGE_SIZE-len, "Link Up - ");

		switch (vport->port_state) {
		case LPFC_LOCAL_CFG_LINK:
			len += snprintf(buf + len, PAGE_SIZE-len,
					"Configuring Link\n");
			break;
		case LPFC_FDISC:
		case LPFC_FLOGI:
		case LPFC_FABRIC_CFG_LINK:
		case LPFC_NS_REG:
		case LPFC_NS_QRY:
		case LPFC_BUILD_DISC_LIST:
		case LPFC_DISC_AUTH:
			len += snprintf(buf + len, PAGE_SIZE - len,
					"Discovery\n");
			break;
		case LPFC_VPORT_READY:
			len += snprintf(buf + len, PAGE_SIZE - len, "Ready\n");
			break;

		case LPFC_VPORT_FAILED:
			len += snprintf(buf + len, PAGE_SIZE - len, "Failed\n");
			break;

		case LPFC_VPORT_UNKNOWN:
			len += snprintf(buf + len, PAGE_SIZE - len,
					"Unknown\n");
			break;
		}
		if (phba->sli.sli_flag & LPFC_MENLO_MAINT)
			len += snprintf(buf + len, PAGE_SIZE-len,
					"   Menlo Maint Mode\n");
		else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
			if (vport->fc_flag & FC_PUBLIC_LOOP)
				len += snprintf(buf + len, PAGE_SIZE-len,
						"   Public Loop\n");
			else
				len += snprintf(buf + len, PAGE_SIZE-len,
						"   Private Loop\n");
		} else {
			if (vport->fc_flag & FC_FABRIC)
				len += snprintf(buf + len, PAGE_SIZE-len,
						"   Fabric\n");
			else
				len += snprintf(buf + len, PAGE_SIZE-len,
						"   Point-2-Point\n");
		}
	}

	return len;
}

/**
 * lpfc_sli4_protocol_show - Return the fip mode of the HBA
 * @dev: class unused variable.
 * @attr: device attribute, not used.
 * @buf: on return contains the module description text.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_sli4_protocol_show(struct device *dev, struct device_attribute *attr,
			char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba *phba = vport->phba;

	if (phba->sli_rev < LPFC_SLI_REV4)
		return snprintf(buf, PAGE_SIZE, "fc\n");

	if (phba->sli4_hba.lnk_info.lnk_dv == LPFC_LNK_DAT_VAL) {
		if (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_GE)
			return snprintf(buf, PAGE_SIZE, "fcoe\n");
		if (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_FC)
			return snprintf(buf, PAGE_SIZE, "fc\n");
	}
	return snprintf(buf, PAGE_SIZE, "unknown\n");
}

/**
 * lpfc_oas_supported_show - Return whether or not Optimized Access Storage
 *			    (OAS) is supported.
 * @dev: class unused variable.
 * @attr: device attribute, not used.
 * @buf: on return contains the module description text.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_oas_supported_show(struct device *dev, struct device_attribute *attr,
			char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
	struct lpfc_hba *phba = vport->phba;

	return snprintf(buf, PAGE_SIZE, "%d\n",
			phba->sli4_hba.pc_sli4_params.oas_supported);
}

/**
 * lpfc_link_state_store - Transition the link_state on an HBA port
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: one or more lpfc_polling_flags values.
 * @count: not used.
 *
 * Returns:
 * -EINVAL if the buffer is not "up" or "down"
 * return from link state change function if non-zero
 * length of the buf on success
 **/
static ssize_t
lpfc_link_state_store(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	int status = -EINVAL;

	if ((strncmp(buf, "up", sizeof("up") - 1) == 0) &&
			(phba->link_state == LPFC_LINK_DOWN))
		status = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);
	else if ((strncmp(buf, "down", sizeof("down") - 1) == 0) &&
			(phba->link_state >= LPFC_LINK_UP))
		status = phba->lpfc_hba_down_link(phba, MBX_NOWAIT);

	if (status == 0)
		return strlen(buf);
	else
		return status;
}

/**
 * lpfc_num_discovered_ports_show - Return sum of mapped and unmapped vports
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: on return contains the sum of fc mapped and unmapped.
 *
 * Description:
 * Returns the ascii text number of the sum of the fc mapped and unmapped
 * vport counts.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_num_discovered_ports_show(struct device *dev,
			       struct device_attribute *attr, char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;

	return snprintf(buf, PAGE_SIZE, "%d\n",
			vport->fc_map_cnt + vport->fc_unmap_cnt);
}

/**
 * lpfc_issue_lip - Misnomer, name carried over from long ago
 * @shost: Scsi_Host pointer.
 *
 * Description:
 * Bring the link down gracefully then re-init the link. The firmware will
 * re-init the fiber channel interface as required. Does not issue a LIP.
 *
 * Returns:
 * -EPERM port offline or management commands are being blocked
 * -ENOMEM cannot allocate memory for the mailbox command
 * -EIO error sending the mailbox command
 * zero for success
 **/
static int
lpfc_issue_lip(struct Scsi_Host *shost)
{
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	LPFC_MBOXQ_t *pmboxq;
	int mbxstatus = MBXERR_ERROR;

	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
	    (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO))
		return -EPERM;

	pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL);

	if (!pmboxq)
		return -ENOMEM;

	memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
	pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK;
	pmboxq->u.mb.mbxOwner = OWN_HOST;

	mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO * 2);

	if ((mbxstatus == MBX_SUCCESS) &&
	    (pmboxq->u.mb.mbxStatus == 0 ||
	     pmboxq->u.mb.mbxStatus == MBXERR_LINK_DOWN)) {
		memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
		lpfc_init_link(phba, pmboxq, phba->cfg_topology,
			       phba->cfg_link_speed);
		mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq,
						     phba->fc_ratov * 2);
		if ((mbxstatus == MBX_SUCCESS) &&
		    (pmboxq->u.mb.mbxStatus == MBXERR_SEC_NO_PERMISSION))
			lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
					"2859 SLI authentication is required "
					"for INIT_LINK but has not done yet\n");
	}

	lpfc_set_loopback_flag(phba);
	if (mbxstatus != MBX_TIMEOUT)
		mempool_free(pmboxq, phba->mbox_mem_pool);

	if (mbxstatus == MBXERR_ERROR)
		return -EIO;

	return 0;
}

int
lpfc_emptyq_wait(struct lpfc_hba *phba, struct list_head *q, spinlock_t *lock)
{
	int cnt = 0;

	spin_lock_irq(lock);
	while (!list_empty(q)) {
		spin_unlock_irq(lock);
		msleep(20);
		if (cnt++ > 250) {  /* 5 secs */
			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
					"0466 %s %s\n",
					"Outstanding IO when ",
					"bringing Adapter offline\n");
				return 0;
		}
		spin_lock_irq(lock);
	}
	spin_unlock_irq(lock);
	return 1;
}

/**
 * lpfc_do_offline - Issues a mailbox command to bring the link down
 * @phba: lpfc_hba pointer.
 * @type: LPFC_EVT_OFFLINE, LPFC_EVT_WARM_START, LPFC_EVT_KILL.
 *
 * Notes:
 * Assumes any error from lpfc_do_offline() will be negative.
 * Can wait up to 5 seconds for the port ring buffers count
 * to reach zero, prints a warning if it is not zero and continues.
 * lpfc_workq_post_event() returns a non-zero return code if call fails.
 *
 * Returns:
 * -EIO error posting the event
 * zero for success
 **/
static int
lpfc_do_offline(struct lpfc_hba *phba, uint32_t type)
{
	struct completion online_compl;
	struct lpfc_queue *qp = NULL;
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
	int status = 0;
	int i;
	int rc;

	init_completion(&online_compl);
	rc = lpfc_workq_post_event(phba, &status, &online_compl,
			      LPFC_EVT_OFFLINE_PREP);
	if (rc == 0)
		return -ENOMEM;

	wait_for_completion(&online_compl);

	if (status != 0)
		return -EIO;

	psli = &phba->sli;

	/* Wait a little for things to settle down, but not
	 * long enough for dev loss timeout to expire.
	 */
	if (phba->sli_rev != LPFC_SLI_REV4) {
		for (i = 0; i < psli->num_rings; i++) {
			pring = &psli->sli3_ring[i];
			if (!lpfc_emptyq_wait(phba, &pring->txcmplq,
					      &phba->hbalock))
				goto out;
		}
	} else {
		list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
			pring = qp->pring;
			if (!pring)
				continue;
			if (!lpfc_emptyq_wait(phba, &pring->txcmplq,
					      &pring->ring_lock))
				goto out;
		}
	}
out:
	init_completion(&online_compl);
	rc = lpfc_workq_post_event(phba, &status, &online_compl, type);
	if (rc == 0)
		return -ENOMEM;

	wait_for_completion(&online_compl);

	if (status != 0)
		return -EIO;

	return 0;
}

/**
 * lpfc_selective_reset - Offline then onlines the port
 * @phba: lpfc_hba pointer.
 *
 * Description:
 * If the port is configured to allow a reset then the hba is brought
 * offline then online.
 *
 * Notes:
 * Assumes any error from lpfc_do_offline() will be negative.
 * Do not make this function static.
 *
 * Returns:
 * lpfc_do_offline() return code if not zero
 * -EIO reset not configured or error posting the event
 * zero for success
 **/
int
lpfc_selective_reset(struct lpfc_hba *phba)
{
	struct completion online_compl;
	int status = 0;
	int rc;

	if (!phba->cfg_enable_hba_reset)
		return -EACCES;

	if (!(phba->pport->fc_flag & FC_OFFLINE_MODE)) {
		status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);

		if (status != 0)
			return status;
	}

	init_completion(&online_compl);
	rc = lpfc_workq_post_event(phba, &status, &online_compl,
			      LPFC_EVT_ONLINE);
	if (rc == 0)
		return -ENOMEM;

	wait_for_completion(&online_compl);

	if (status != 0)
		return -EIO;

	return 0;
}

/**
 * lpfc_issue_reset - Selectively resets an adapter
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: containing the string "selective".
 * @count: unused variable.
 *
 * Description:
 * If the buf contains the string "selective" then lpfc_selective_reset()
 * is called to perform the reset.
 *
 * Notes:
 * Assumes any error from lpfc_selective_reset() will be negative.
 * If lpfc_selective_reset() returns zero then the length of the buffer
 * is returned which indicates success
 *
 * Returns:
 * -EINVAL if the buffer does not contain the string "selective"
 * length of buf if lpfc-selective_reset() if the call succeeds
 * return value of lpfc_selective_reset() if the call fails
**/
static ssize_t
lpfc_issue_reset(struct device *dev, struct device_attribute *attr,
		 const char *buf, size_t count)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	int status = -EINVAL;

	if (!phba->cfg_enable_hba_reset)
		return -EACCES;

	if (strncmp(buf, "selective", sizeof("selective") - 1) == 0)
		status = phba->lpfc_selective_reset(phba);

	if (status == 0)
		return strlen(buf);
	else
		return status;
}

/**
 * lpfc_sli4_pdev_status_reg_wait - Wait for pdev status register for readyness
 * @phba: lpfc_hba pointer.
 *
 * Description:
 * SLI4 interface type-2 device to wait on the sliport status register for
 * the readyness after performing a firmware reset.
 *
 * Returns:
 * zero for success, -EPERM when port does not have privilege to perform the
 * reset, -EIO when port timeout from recovering from the reset.
 *
 * Note:
 * As the caller will interpret the return code by value, be careful in making
 * change or addition to return codes.
 **/
int
lpfc_sli4_pdev_status_reg_wait(struct lpfc_hba *phba)
{
	struct lpfc_register portstat_reg = {0};
	int i;

	msleep(100);
	lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
		   &portstat_reg.word0);

	/* verify if privileged for the request operation */
	if (!bf_get(lpfc_sliport_status_rn, &portstat_reg) &&
	    !bf_get(lpfc_sliport_status_err, &portstat_reg))
		return -EPERM;

	/* wait for the SLI port firmware ready after firmware reset */
	for (i = 0; i < LPFC_FW_RESET_MAXIMUM_WAIT_10MS_CNT; i++) {
		msleep(10);
		lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
			   &portstat_reg.word0);
		if (!bf_get(lpfc_sliport_status_err, &portstat_reg))
			continue;
		if (!bf_get(lpfc_sliport_status_rn, &portstat_reg))
			continue;
		if (!bf_get(lpfc_sliport_status_rdy, &portstat_reg))
			continue;
		break;
	}

	if (i < LPFC_FW_RESET_MAXIMUM_WAIT_10MS_CNT)
		return 0;
	else
		return -EIO;
}

/**
 * lpfc_sli4_pdev_reg_request - Request physical dev to perform a register acc
 * @phba: lpfc_hba pointer.
 *
 * Description:
 * Request SLI4 interface type-2 device to perform a physical register set
 * access.
 *
 * Returns:
 * zero for success
 **/
static ssize_t
lpfc_sli4_pdev_reg_request(struct lpfc_hba *phba, uint32_t opcode)
{
	struct completion online_compl;
	struct pci_dev *pdev = phba->pcidev;
	uint32_t before_fc_flag;
	uint32_t sriov_nr_virtfn;
	uint32_t reg_val;
	int status = 0, rc = 0;
	int job_posted = 1, sriov_err;

	if (!phba->cfg_enable_hba_reset)
		return -EACCES;

	if ((phba->sli_rev < LPFC_SLI_REV4) ||
	    (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
	     LPFC_SLI_INTF_IF_TYPE_2))
		return -EPERM;

	/* Keep state if we need to restore back */
	before_fc_flag = phba->pport->fc_flag;
	sriov_nr_virtfn = phba->cfg_sriov_nr_virtfn;

	/* Disable SR-IOV virtual functions if enabled */
	if (phba->cfg_sriov_nr_virtfn) {
		pci_disable_sriov(pdev);
		phba->cfg_sriov_nr_virtfn = 0;
	}

	if (opcode == LPFC_FW_DUMP)
		phba->hba_flag |= HBA_FW_DUMP_OP;

	status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);

	if (status != 0) {
		phba->hba_flag &= ~HBA_FW_DUMP_OP;
		return status;
	}

	/* wait for the device to be quiesced before firmware reset */
	msleep(100);

	reg_val = readl(phba->sli4_hba.conf_regs_memmap_p +
			LPFC_CTL_PDEV_CTL_OFFSET);

	if (opcode == LPFC_FW_DUMP)
		reg_val |= LPFC_FW_DUMP_REQUEST;
	else if (opcode == LPFC_FW_RESET)
		reg_val |= LPFC_CTL_PDEV_CTL_FRST;
	else if (opcode == LPFC_DV_RESET)
		reg_val |= LPFC_CTL_PDEV_CTL_DRST;

	writel(reg_val, phba->sli4_hba.conf_regs_memmap_p +
	       LPFC_CTL_PDEV_CTL_OFFSET);
	/* flush */
	readl(phba->sli4_hba.conf_regs_memmap_p + LPFC_CTL_PDEV_CTL_OFFSET);

	/* delay driver action following IF_TYPE_2 reset */
	rc = lpfc_sli4_pdev_status_reg_wait(phba);

	if (rc == -EPERM) {
		/* no privilege for reset */
		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
				"3150 No privilege to perform the requested "
				"access: x%x\n", reg_val);
	} else if (rc == -EIO) {
		/* reset failed, there is nothing more we can do */
		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
				"3153 Fail to perform the requested "
				"access: x%x\n", reg_val);
		return rc;
	}

	/* keep the original port state */
	if (before_fc_flag & FC_OFFLINE_MODE)
		goto out;

	init_completion(&online_compl);
	job_posted = lpfc_workq_post_event(phba, &status, &online_compl,
					   LPFC_EVT_ONLINE);
	if (!job_posted)
		goto out;

	wait_for_completion(&online_compl);

out:
	/* in any case, restore the virtual functions enabled as before */
	if (sriov_nr_virtfn) {
		sriov_err =
			lpfc_sli_probe_sriov_nr_virtfn(phba, sriov_nr_virtfn);
		if (!sriov_err)
			phba->cfg_sriov_nr_virtfn = sriov_nr_virtfn;
	}

	/* return proper error code */
	if (!rc) {
		if (!job_posted)
			rc = -ENOMEM;
		else if (status)
			rc = -EIO;
	}
	return rc;
}

/**
 * lpfc_nport_evt_cnt_show - Return the number of nport events
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: on return contains the ascii number of nport events.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_nport_evt_cnt_show(struct device *dev, struct device_attribute *attr,
			char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	return snprintf(buf, PAGE_SIZE, "%d\n", phba->nport_event_cnt);
}

/**
 * lpfc_board_mode_show - Return the state of the board
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: on return contains the state of the adapter.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_board_mode_show(struct device *dev, struct device_attribute *attr,
		     char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	char  * state;

	if (phba->link_state == LPFC_HBA_ERROR)
		state = "error";
	else if (phba->link_state == LPFC_WARM_START)
		state = "warm start";
	else if (phba->link_state == LPFC_INIT_START)
		state = "offline";
	else
		state = "online";

	return snprintf(buf, PAGE_SIZE, "%s\n", state);
}

/**
 * lpfc_board_mode_store - Puts the hba in online, offline, warm or error state
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: containing one of the strings "online", "offline", "warm" or "error".
 * @count: unused variable.
 *
 * Returns:
 * -EACCES if enable hba reset not enabled
 * -EINVAL if the buffer does not contain a valid string (see above)
 * -EIO if lpfc_workq_post_event() or lpfc_do_offline() fails
 * buf length greater than zero indicates success
 **/
static ssize_t
lpfc_board_mode_store(struct device *dev, struct device_attribute *attr,
		      const char *buf, size_t count)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	struct completion online_compl;
	char *board_mode_str = NULL;
	int status = 0;
	int rc;

	if (!phba->cfg_enable_hba_reset) {
		status = -EACCES;
		goto board_mode_out;
	}

	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
			 "3050 lpfc_board_mode set to %s\n", buf);

	init_completion(&online_compl);

	if(strncmp(buf, "online", sizeof("online") - 1) == 0) {
		rc = lpfc_workq_post_event(phba, &status, &online_compl,
				      LPFC_EVT_ONLINE);
		if (rc == 0) {
			status = -ENOMEM;
			goto board_mode_out;
		}
		wait_for_completion(&online_compl);
		if (status)
			status = -EIO;
	} else if (strncmp(buf, "offline", sizeof("offline") - 1) == 0)
		status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
	else if (strncmp(buf, "warm", sizeof("warm") - 1) == 0)
		if (phba->sli_rev == LPFC_SLI_REV4)
			status = -EINVAL;
		else
			status = lpfc_do_offline(phba, LPFC_EVT_WARM_START);
	else if (strncmp(buf, "error", sizeof("error") - 1) == 0)
		if (phba->sli_rev == LPFC_SLI_REV4)
			status = -EINVAL;
		else
			status = lpfc_do_offline(phba, LPFC_EVT_KILL);
	else if (strncmp(buf, "dump", sizeof("dump") - 1) == 0)
		status = lpfc_sli4_pdev_reg_request(phba, LPFC_FW_DUMP);
	else if (strncmp(buf, "fw_reset", sizeof("fw_reset") - 1) == 0)
		status = lpfc_sli4_pdev_reg_request(phba, LPFC_FW_RESET);
	else if (strncmp(buf, "dv_reset", sizeof("dv_reset") - 1) == 0)
		status = lpfc_sli4_pdev_reg_request(phba, LPFC_DV_RESET);
	else
		status = -EINVAL;

board_mode_out:
	if (!status)
		return strlen(buf);
	else {
		board_mode_str = strchr(buf, '\n');
		if (board_mode_str)
			*board_mode_str = '\0';
		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
				 "3097 Failed \"%s\", status(%d), "
				 "fc_flag(x%x)\n",
				 buf, status, phba->pport->fc_flag);
		return status;
	}
}

/**
 * lpfc_get_hba_info - Return various bits of informaton about the adapter
 * @phba: pointer to the adapter structure.
 * @mxri: max xri count.
 * @axri: available xri count.
 * @mrpi: max rpi count.
 * @arpi: available rpi count.
 * @mvpi: max vpi count.
 * @avpi: available vpi count.
 *
 * Description:
 * If an integer pointer for an count is not null then the value for the
 * count is returned.
 *
 * Returns:
 * zero on error
 * one for success
 **/
static int
lpfc_get_hba_info(struct lpfc_hba *phba,
		  uint32_t *mxri, uint32_t *axri,
		  uint32_t *mrpi, uint32_t *arpi,
		  uint32_t *mvpi, uint32_t *avpi)
{
	struct lpfc_mbx_read_config *rd_config;
	LPFC_MBOXQ_t *pmboxq;
	MAILBOX_t *pmb;
	int rc = 0;
	uint32_t max_vpi;

	/*
	 * prevent udev from issuing mailbox commands until the port is
	 * configured.
	 */
	if (phba->link_state < LPFC_LINK_DOWN ||
	    !phba->mbox_mem_pool ||
	    (phba->sli.sli_flag & LPFC_SLI_ACTIVE) == 0)
		return 0;

	if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
		return 0;

	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (!pmboxq)
		return 0;
	memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));

	pmb = &pmboxq->u.mb;
	pmb->mbxCommand = MBX_READ_CONFIG;
	pmb->mbxOwner = OWN_HOST;
	pmboxq->context1 = NULL;

	if (phba->pport->fc_flag & FC_OFFLINE_MODE)
		rc = MBX_NOT_FINISHED;
	else
		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);

	if (rc != MBX_SUCCESS) {
		if (rc != MBX_TIMEOUT)
			mempool_free(pmboxq, phba->mbox_mem_pool);
		return 0;
	}

	if (phba->sli_rev == LPFC_SLI_REV4) {
		rd_config = &pmboxq->u.mqe.un.rd_config;
		if (mrpi)
			*mrpi = bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config);
		if (arpi)
			*arpi = bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config) -
					phba->sli4_hba.max_cfg_param.rpi_used;
		if (mxri)
			*mxri = bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);
		if (axri)
			*axri = bf_get(lpfc_mbx_rd_conf_xri_count, rd_config) -
					phba->sli4_hba.max_cfg_param.xri_used;

		/* Account for differences with SLI-3.  Get vpi count from
		 * mailbox data and subtract one for max vpi value.
		 */
		max_vpi = (bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config) > 0) ?
			(bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config) - 1) : 0;

		if (mvpi)
			*mvpi = max_vpi;
		if (avpi)
			*avpi = max_vpi - phba->sli4_hba.max_cfg_param.vpi_used;
	} else {
		if (mrpi)
			*mrpi = pmb->un.varRdConfig.max_rpi;
		if (arpi)
			*arpi = pmb->un.varRdConfig.avail_rpi;
		if (mxri)
			*mxri = pmb->un.varRdConfig.max_xri;
		if (axri)
			*axri = pmb->un.varRdConfig.avail_xri;
		if (mvpi)
			*mvpi = pmb->un.varRdConfig.max_vpi;
		if (avpi)
			*avpi = pmb->un.varRdConfig.avail_vpi;
	}

	mempool_free(pmboxq, phba->mbox_mem_pool);
	return 1;
}

/**
 * lpfc_max_rpi_show - Return maximum rpi
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: on return contains the maximum rpi count in decimal or "Unknown".
 *
 * Description:
 * Calls lpfc_get_hba_info() asking for just the mrpi count.
 * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
 * to "Unknown" and the buffer length is returned, therefore the caller
 * must check for "Unknown" in the buffer to detect a failure.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_max_rpi_show(struct device *dev, struct device_attribute *attr,
		  char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	uint32_t cnt;

	if (lpfc_get_hba_info(phba, NULL, NULL, &cnt, NULL, NULL, NULL))
		return snprintf(buf, PAGE_SIZE, "%d\n", cnt);
	return snprintf(buf, PAGE_SIZE, "Unknown\n");
}

/**
 * lpfc_used_rpi_show - Return maximum rpi minus available rpi
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: containing the used rpi count in decimal or "Unknown".
 *
 * Description:
 * Calls lpfc_get_hba_info() asking for just the mrpi and arpi counts.
 * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
 * to "Unknown" and the buffer length is returned, therefore the caller
 * must check for "Unknown" in the buffer to detect a failure.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_used_rpi_show(struct device *dev, struct device_attribute *attr,
		   char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	uint32_t cnt, acnt;

	if (lpfc_get_hba_info(phba, NULL, NULL, &cnt, &acnt, NULL, NULL))
		return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
	return snprintf(buf, PAGE_SIZE, "Unknown\n");
}

/**
 * lpfc_max_xri_show - Return maximum xri
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: on return contains the maximum xri count in decimal or "Unknown".
 *
 * Description:
 * Calls lpfc_get_hba_info() asking for just the mrpi count.
 * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
 * to "Unknown" and the buffer length is returned, therefore the caller
 * must check for "Unknown" in the buffer to detect a failure.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_max_xri_show(struct device *dev, struct device_attribute *attr,
		  char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	uint32_t cnt;

	if (lpfc_get_hba_info(phba, &cnt, NULL, NULL, NULL, NULL, NULL))
		return snprintf(buf, PAGE_SIZE, "%d\n", cnt);
	return snprintf(buf, PAGE_SIZE, "Unknown\n");
}

/**
 * lpfc_used_xri_show - Return maximum xpi minus the available xpi
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: on return contains the used xri count in decimal or "Unknown".
 *
 * Description:
 * Calls lpfc_get_hba_info() asking for just the mxri and axri counts.
 * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
 * to "Unknown" and the buffer length is returned, therefore the caller
 * must check for "Unknown" in the buffer to detect a failure.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_used_xri_show(struct device *dev, struct device_attribute *attr,
		   char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	uint32_t cnt, acnt;

	if (lpfc_get_hba_info(phba, &cnt, &acnt, NULL, NULL, NULL, NULL))
		return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
	return snprintf(buf, PAGE_SIZE, "Unknown\n");
}

/**
 * lpfc_max_vpi_show - Return maximum vpi
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: on return contains the maximum vpi count in decimal or "Unknown".
 *
 * Description:
 * Calls lpfc_get_hba_info() asking for just the mvpi count.
 * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
 * to "Unknown" and the buffer length is returned, therefore the caller
 * must check for "Unknown" in the buffer to detect a failure.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_max_vpi_show(struct device *dev, struct device_attribute *attr,
		  char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	uint32_t cnt;

	if (lpfc_get_hba_info(phba, NULL, NULL, NULL, NULL, &cnt, NULL))
		return snprintf(buf, PAGE_SIZE, "%d\n", cnt);
	return snprintf(buf, PAGE_SIZE, "Unknown\n");
}

/**
 * lpfc_used_vpi_show - Return maximum vpi minus the available vpi
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: on return contains the used vpi count in decimal or "Unknown".
 *
 * Description:
 * Calls lpfc_get_hba_info() asking for just the mvpi and avpi counts.
 * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
 * to "Unknown" and the buffer length is returned, therefore the caller
 * must check for "Unknown" in the buffer to detect a failure.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_used_vpi_show(struct device *dev, struct device_attribute *attr,
		   char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	uint32_t cnt, acnt;

	if (lpfc_get_hba_info(phba, NULL, NULL, NULL, NULL, &cnt, &acnt))
		return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
	return snprintf(buf, PAGE_SIZE, "Unknown\n");
}

/**
 * lpfc_npiv_info_show - Return text about NPIV support for the adapter
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: text that must be interpreted to determine if npiv is supported.
 *
 * Description:
 * Buffer will contain text indicating npiv is not suppoerted on the port,
 * the port is an NPIV physical port, or it is an npiv virtual port with
 * the id of the vport.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_npiv_info_show(struct device *dev, struct device_attribute *attr,
		    char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	if (!(phba->max_vpi))
		return snprintf(buf, PAGE_SIZE, "NPIV Not Supported\n");
	if (vport->port_type == LPFC_PHYSICAL_PORT)
		return snprintf(buf, PAGE_SIZE, "NPIV Physical\n");
	return snprintf(buf, PAGE_SIZE, "NPIV Virtual (VPI %d)\n", vport->vpi);
}

/**
 * lpfc_poll_show - Return text about poll support for the adapter
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: on return contains the cfg_poll in hex.
 *
 * Notes:
 * cfg_poll should be a lpfc_polling_flags type.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_poll_show(struct device *dev, struct device_attribute *attr,
	       char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	return snprintf(buf, PAGE_SIZE, "%#x\n", phba->cfg_poll);
}

/**
 * lpfc_poll_store - Set the value of cfg_poll for the adapter
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: one or more lpfc_polling_flags values.
 * @count: not used.
 *
 * Notes:
 * buf contents converted to integer and checked for a valid value.
 *
 * Returns:
 * -EINVAL if the buffer connot be converted or is out of range
 * length of the buf on success
 **/
static ssize_t
lpfc_poll_store(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	uint32_t creg_val;
	uint32_t old_val;
	int val=0;

	if (!isdigit(buf[0]))
		return -EINVAL;

	if (sscanf(buf, "%i", &val) != 1)
		return -EINVAL;

	if ((val & 0x3) != val)
		return -EINVAL;

	if (phba->sli_rev == LPFC_SLI_REV4)
		val = 0;

	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
		"3051 lpfc_poll changed from %d to %d\n",
		phba->cfg_poll, val);

	spin_lock_irq(&phba->hbalock);

	old_val = phba->cfg_poll;

	if (val & ENABLE_FCP_RING_POLLING) {
		if ((val & DISABLE_FCP_RING_INT) &&
		    !(old_val & DISABLE_FCP_RING_INT)) {
			if (lpfc_readl(phba->HCregaddr, &creg_val)) {
				spin_unlock_irq(&phba->hbalock);
				return -EINVAL;
			}
			creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
			writel(creg_val, phba->HCregaddr);
			readl(phba->HCregaddr); /* flush */

			lpfc_poll_start_timer(phba);
		}
	} else if (val != 0x0) {
		spin_unlock_irq(&phba->hbalock);
		return -EINVAL;
	}

	if (!(val & DISABLE_FCP_RING_INT) &&
	    (old_val & DISABLE_FCP_RING_INT))
	{
		spin_unlock_irq(&phba->hbalock);
		del_timer(&phba->fcp_poll_timer);
		spin_lock_irq(&phba->hbalock);
		if (lpfc_readl(phba->HCregaddr, &creg_val)) {
			spin_unlock_irq(&phba->hbalock);
			return -EINVAL;
		}
		creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
		writel(creg_val, phba->HCregaddr);
		readl(phba->HCregaddr); /* flush */
	}

	phba->cfg_poll = val;

	spin_unlock_irq(&phba->hbalock);

	return strlen(buf);
}

/**
 * lpfc_fips_level_show - Return the current FIPS level for the HBA
 * @dev: class unused variable.
 * @attr: device attribute, not used.
 * @buf: on return contains the module description text.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_fips_level_show(struct device *dev,  struct device_attribute *attr,
		     char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	return snprintf(buf, PAGE_SIZE, "%d\n", phba->fips_level);
}

/**
 * lpfc_fips_rev_show - Return the FIPS Spec revision for the HBA
 * @dev: class unused variable.
 * @attr: device attribute, not used.
 * @buf: on return contains the module description text.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_fips_rev_show(struct device *dev,  struct device_attribute *attr,
		   char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	return snprintf(buf, PAGE_SIZE, "%d\n", phba->fips_spec_rev);
}

/**
 * lpfc_dss_show - Return the current state of dss and the configured state
 * @dev: class converted to a Scsi_host structure.
 * @attr: device attribute, not used.
 * @buf: on return contains the formatted text.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_dss_show(struct device *dev, struct device_attribute *attr,
	      char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	return snprintf(buf, PAGE_SIZE, "%s - %sOperational\n",
			(phba->cfg_enable_dss) ? "Enabled" : "Disabled",
			(phba->sli3_options & LPFC_SLI3_DSS_ENABLED) ?
				"" : "Not ");
}

/**
 * lpfc_sriov_hw_max_virtfn_show - Return maximum number of virtual functions
 * @dev: class converted to a Scsi_host structure.
 * @attr: device attribute, not used.
 * @buf: on return contains the formatted support level.
 *
 * Description:
 * Returns the maximum number of virtual functions a physical function can
 * support, 0 will be returned if called on virtual function.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_sriov_hw_max_virtfn_show(struct device *dev,
			      struct device_attribute *attr,
			      char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba *phba = vport->phba;
	uint16_t max_nr_virtfn;

	max_nr_virtfn = lpfc_sli_sriov_nr_virtfn_get(phba);
	return snprintf(buf, PAGE_SIZE, "%d\n", max_nr_virtfn);
}

static inline bool lpfc_rangecheck(uint val, uint min, uint max)
{
	return val >= min && val <= max;
}

/**
 * lpfc_enable_bbcr_set: Sets an attribute value.
 * @phba: pointer the the adapter structure.
 * @val: integer attribute value.
 *
 * Description:
 * Validates the min and max values then sets the
 * adapter config field if in the valid range. prints error message
 * and does not set the parameter if invalid.
 *
 * Returns:
 * zero on success
 * -EINVAL if val is invalid
 */
static ssize_t
lpfc_enable_bbcr_set(struct lpfc_hba *phba, uint val)
{
	if (lpfc_rangecheck(val, 0, 1) && phba->sli_rev == LPFC_SLI_REV4) {
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
				"3068 %s_enable_bbcr changed from %d to %d\n",
				LPFC_DRIVER_NAME, phba->cfg_enable_bbcr, val);
		phba->cfg_enable_bbcr = val;
		return 0;
	}
	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
			"0451 %s_enable_bbcr cannot set to %d, range is 0, 1\n",
			LPFC_DRIVER_NAME, val);
	return -EINVAL;
}

/**
 * lpfc_param_show - Return a cfg attribute value in decimal
 *
 * Description:
 * Macro that given an attr e.g. hba_queue_depth expands
 * into a function with the name lpfc_hba_queue_depth_show.
 *
 * lpfc_##attr##_show: Return the decimal value of an adapters cfg_xxx field.
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: on return contains the attribute value in decimal.
 *
 * Returns: size of formatted string.
 **/
#define lpfc_param_show(attr)	\
static ssize_t \
lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
		   char *buf) \
{ \
	struct Scsi_Host  *shost = class_to_shost(dev);\
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
	struct lpfc_hba   *phba = vport->phba;\
	return snprintf(buf, PAGE_SIZE, "%d\n",\
			phba->cfg_##attr);\
}

/**
 * lpfc_param_hex_show - Return a cfg attribute value in hex
 *
 * Description:
 * Macro that given an attr e.g. hba_queue_depth expands
 * into a function with the name lpfc_hba_queue_depth_show
 *
 * lpfc_##attr##_show: Return the hex value of an adapters cfg_xxx field.
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: on return contains the attribute value in hexadecimal.
 *
 * Returns: size of formatted string.
 **/
#define lpfc_param_hex_show(attr)	\
static ssize_t \
lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
		   char *buf) \
{ \
	struct Scsi_Host  *shost = class_to_shost(dev);\
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
	struct lpfc_hba   *phba = vport->phba;\
	uint val = 0;\
	val = phba->cfg_##attr;\
	return snprintf(buf, PAGE_SIZE, "%#x\n",\
			phba->cfg_##attr);\
}

/**
 * lpfc_param_init - Initializes a cfg attribute
 *
 * Description:
 * Macro that given an attr e.g. hba_queue_depth expands
 * into a function with the name lpfc_hba_queue_depth_init. The macro also
 * takes a default argument, a minimum and maximum argument.
 *
 * lpfc_##attr##_init: Initializes an attribute.
 * @phba: pointer the the adapter structure.
 * @val: integer attribute value.
 *
 * Validates the min and max values then sets the adapter config field
 * accordingly, or uses the default if out of range and prints an error message.
 *
 * Returns:
 * zero on success
 * -EINVAL if default used
 **/
#define lpfc_param_init(attr, default, minval, maxval)	\
static int \
lpfc_##attr##_init(struct lpfc_hba *phba, uint val) \
{ \
	if (lpfc_rangecheck(val, minval, maxval)) {\
		phba->cfg_##attr = val;\
		return 0;\
	}\
	lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
			"0449 lpfc_"#attr" attribute cannot be set to %d, "\
			"allowed range is ["#minval", "#maxval"]\n", val); \
	phba->cfg_##attr = default;\
	return -EINVAL;\
}

/**
 * lpfc_param_set - Set a cfg attribute value
 *
 * Description:
 * Macro that given an attr e.g. hba_queue_depth expands
 * into a function with the name lpfc_hba_queue_depth_set
 *
 * lpfc_##attr##_set: Sets an attribute value.
 * @phba: pointer the the adapter structure.
 * @val: integer attribute value.
 *
 * Description:
 * Validates the min and max values then sets the
 * adapter config field if in the valid range. prints error message
 * and does not set the parameter if invalid.
 *
 * Returns:
 * zero on success
 * -EINVAL if val is invalid
 **/
#define lpfc_param_set(attr, default, minval, maxval)	\
static int \
lpfc_##attr##_set(struct lpfc_hba *phba, uint val) \
{ \
	if (lpfc_rangecheck(val, minval, maxval)) {\
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
			"3052 lpfc_" #attr " changed from %d to %d\n", \
			phba->cfg_##attr, val); \
		phba->cfg_##attr = val;\
		return 0;\
	}\
	lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
			"0450 lpfc_"#attr" attribute cannot be set to %d, "\
			"allowed range is ["#minval", "#maxval"]\n", val); \
	return -EINVAL;\
}

/**
 * lpfc_param_store - Set a vport attribute value
 *
 * Description:
 * Macro that given an attr e.g. hba_queue_depth expands
 * into a function with the name lpfc_hba_queue_depth_store.
 *
 * lpfc_##attr##_store: Set an sttribute value.
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: contains the attribute value in ascii.
 * @count: not used.
 *
 * Description:
 * Convert the ascii text number to an integer, then
 * use the lpfc_##attr##_set function to set the value.
 *
 * Returns:
 * -EINVAL if val is invalid or lpfc_##attr##_set() fails
 * length of buffer upon success.
 **/
#define lpfc_param_store(attr)	\
static ssize_t \
lpfc_##attr##_store(struct device *dev, struct device_attribute *attr, \
		    const char *buf, size_t count) \
{ \
	struct Scsi_Host  *shost = class_to_shost(dev);\
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
	struct lpfc_hba   *phba = vport->phba;\
	uint val = 0;\
	if (!isdigit(buf[0]))\
		return -EINVAL;\
	if (sscanf(buf, "%i", &val) != 1)\
		return -EINVAL;\
	if (lpfc_##attr##_set(phba, val) == 0) \
		return strlen(buf);\
	else \
		return -EINVAL;\
}

/**
 * lpfc_vport_param_show - Return decimal formatted cfg attribute value
 *
 * Description:
 * Macro that given an attr e.g. hba_queue_depth expands
 * into a function with the name lpfc_hba_queue_depth_show
 *
 * lpfc_##attr##_show: prints the attribute value in decimal.
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: on return contains the attribute value in decimal.
 *
 * Returns: length of formatted string.
 **/
#define lpfc_vport_param_show(attr)	\
static ssize_t \
lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
		   char *buf) \
{ \
	struct Scsi_Host  *shost = class_to_shost(dev);\
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
	return snprintf(buf, PAGE_SIZE, "%d\n", vport->cfg_##attr);\
}

/**
 * lpfc_vport_param_hex_show - Return hex formatted attribute value
 *
 * Description:
 * Macro that given an attr e.g.
 * hba_queue_depth expands into a function with the name
 * lpfc_hba_queue_depth_show
 *
 * lpfc_##attr##_show: prints the attribute value in hexadecimal.
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: on return contains the attribute value in hexadecimal.
 *
 * Returns: length of formatted string.
 **/
#define lpfc_vport_param_hex_show(attr)	\
static ssize_t \
lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
		   char *buf) \
{ \
	struct Scsi_Host  *shost = class_to_shost(dev);\
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
	return snprintf(buf, PAGE_SIZE, "%#x\n", vport->cfg_##attr);\
}

/**
 * lpfc_vport_param_init - Initialize a vport cfg attribute
 *
 * Description:
 * Macro that given an attr e.g. hba_queue_depth expands
 * into a function with the name lpfc_hba_queue_depth_init. The macro also
 * takes a default argument, a minimum and maximum argument.
 *
 * lpfc_##attr##_init: validates the min and max values then sets the
 * adapter config field accordingly, or uses the default if out of range
 * and prints an error message.
 * @phba: pointer the the adapter structure.
 * @val: integer attribute value.
 *
 * Returns:
 * zero on success
 * -EINVAL if default used
 **/
#define lpfc_vport_param_init(attr, default, minval, maxval)	\
static int \
lpfc_##attr##_init(struct lpfc_vport *vport, uint val) \
{ \
	if (lpfc_rangecheck(val, minval, maxval)) {\
		vport->cfg_##attr = val;\
		return 0;\
	}\
	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
			 "0423 lpfc_"#attr" attribute cannot be set to %d, "\
			 "allowed range is ["#minval", "#maxval"]\n", val); \
	vport->cfg_##attr = default;\
	return -EINVAL;\
}

/**
 * lpfc_vport_param_set - Set a vport cfg attribute
 *
 * Description:
 * Macro that given an attr e.g. hba_queue_depth expands
 * into a function with the name lpfc_hba_queue_depth_set
 *
 * lpfc_##attr##_set: validates the min and max values then sets the
 * adapter config field if in the valid range. prints error message
 * and does not set the parameter if invalid.
 * @phba: pointer the the adapter structure.
 * @val:	integer attribute value.
 *
 * Returns:
 * zero on success
 * -EINVAL if val is invalid
 **/
#define lpfc_vport_param_set(attr, default, minval, maxval)	\
static int \
lpfc_##attr##_set(struct lpfc_vport *vport, uint val) \
{ \
	if (lpfc_rangecheck(val, minval, maxval)) {\
		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
			"3053 lpfc_" #attr \
			" changed from %d (x%x) to %d (x%x)\n", \
			vport->cfg_##attr, vport->cfg_##attr, \
			val, val); \
		vport->cfg_##attr = val;\
		return 0;\
	}\
	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
			 "0424 lpfc_"#attr" attribute cannot be set to %d, "\
			 "allowed range is ["#minval", "#maxval"]\n", val); \
	return -EINVAL;\
}

/**
 * lpfc_vport_param_store - Set a vport attribute
 *
 * Description:
 * Macro that given an attr e.g. hba_queue_depth
 * expands into a function with the name lpfc_hba_queue_depth_store
 *
 * lpfc_##attr##_store: convert the ascii text number to an integer, then
 * use the lpfc_##attr##_set function to set the value.
 * @cdev: class device that is converted into a Scsi_host.
 * @buf:	contains the attribute value in decimal.
 * @count: not used.
 *
 * Returns:
 * -EINVAL if val is invalid or lpfc_##attr##_set() fails
 * length of buffer upon success.
 **/
#define lpfc_vport_param_store(attr)	\
static ssize_t \
lpfc_##attr##_store(struct device *dev, struct device_attribute *attr, \
		    const char *buf, size_t count) \
{ \
	struct Scsi_Host  *shost = class_to_shost(dev);\
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
	uint val = 0;\
	if (!isdigit(buf[0]))\
		return -EINVAL;\
	if (sscanf(buf, "%i", &val) != 1)\
		return -EINVAL;\
	if (lpfc_##attr##_set(vport, val) == 0) \
		return strlen(buf);\
	else \
		return -EINVAL;\
}


static DEVICE_ATTR(nvme_info, 0444, lpfc_nvme_info_show, NULL);
static DEVICE_ATTR(bg_info, S_IRUGO, lpfc_bg_info_show, NULL);
static DEVICE_ATTR(bg_guard_err, S_IRUGO, lpfc_bg_guard_err_show, NULL);
static DEVICE_ATTR(bg_apptag_err, S_IRUGO, lpfc_bg_apptag_err_show, NULL);
static DEVICE_ATTR(bg_reftag_err, S_IRUGO, lpfc_bg_reftag_err_show, NULL);
static DEVICE_ATTR(info, S_IRUGO, lpfc_info_show, NULL);
static DEVICE_ATTR(serialnum, S_IRUGO, lpfc_serialnum_show, NULL);
static DEVICE_ATTR(modeldesc, S_IRUGO, lpfc_modeldesc_show, NULL);
static DEVICE_ATTR(modelname, S_IRUGO, lpfc_modelname_show, NULL);
static DEVICE_ATTR(programtype, S_IRUGO, lpfc_programtype_show, NULL);
static DEVICE_ATTR(portnum, S_IRUGO, lpfc_vportnum_show, NULL);
static DEVICE_ATTR(fwrev, S_IRUGO, lpfc_fwrev_show, NULL);
static DEVICE_ATTR(hdw, S_IRUGO, lpfc_hdw_show, NULL);
static DEVICE_ATTR(link_state, S_IRUGO | S_IWUSR, lpfc_link_state_show,
		lpfc_link_state_store);
static DEVICE_ATTR(option_rom_version, S_IRUGO,
		   lpfc_option_rom_version_show, NULL);
static DEVICE_ATTR(num_discovered_ports, S_IRUGO,
		   lpfc_num_discovered_ports_show, NULL);
static DEVICE_ATTR(menlo_mgmt_mode, S_IRUGO, lpfc_mlomgmt_show, NULL);
static DEVICE_ATTR(nport_evt_cnt, S_IRUGO, lpfc_nport_evt_cnt_show, NULL);
static DEVICE_ATTR(lpfc_drvr_version, S_IRUGO, lpfc_drvr_version_show, NULL);
static DEVICE_ATTR(lpfc_enable_fip, S_IRUGO, lpfc_enable_fip_show, NULL);
static DEVICE_ATTR(board_mode, S_IRUGO | S_IWUSR,
		   lpfc_board_mode_show, lpfc_board_mode_store);
static DEVICE_ATTR(issue_reset, S_IWUSR, NULL, lpfc_issue_reset);
static DEVICE_ATTR(max_vpi, S_IRUGO, lpfc_max_vpi_show, NULL);
static DEVICE_ATTR(used_vpi, S_IRUGO, lpfc_used_vpi_show, NULL);
static DEVICE_ATTR(max_rpi, S_IRUGO, lpfc_max_rpi_show, NULL);
static DEVICE_ATTR(used_rpi, S_IRUGO, lpfc_used_rpi_show, NULL);
static DEVICE_ATTR(max_xri, S_IRUGO, lpfc_max_xri_show, NULL);
static DEVICE_ATTR(used_xri, S_IRUGO, lpfc_used_xri_show, NULL);
static DEVICE_ATTR(npiv_info, S_IRUGO, lpfc_npiv_info_show, NULL);
static DEVICE_ATTR(lpfc_temp_sensor, S_IRUGO, lpfc_temp_sensor_show, NULL);
static DEVICE_ATTR(lpfc_fips_level, S_IRUGO, lpfc_fips_level_show, NULL);
static DEVICE_ATTR(lpfc_fips_rev, S_IRUGO, lpfc_fips_rev_show, NULL);
static DEVICE_ATTR(lpfc_dss, S_IRUGO, lpfc_dss_show, NULL);
static DEVICE_ATTR(lpfc_sriov_hw_max_virtfn, S_IRUGO,
		   lpfc_sriov_hw_max_virtfn_show, NULL);
static DEVICE_ATTR(protocol, S_IRUGO, lpfc_sli4_protocol_show, NULL);
static DEVICE_ATTR(lpfc_xlane_supported, S_IRUGO, lpfc_oas_supported_show,
		   NULL);

static char *lpfc_soft_wwn_key = "C99G71SL8032A";
#define WWN_SZ 8
/**
 * lpfc_wwn_set - Convert string to the 8 byte WWN value.
 * @buf: WWN string.
 * @cnt: Length of string.
 * @wwn: Array to receive converted wwn value.
 *
 * Returns:
 * -EINVAL if the buffer does not contain a valid wwn
 * 0 success
 **/
static size_t
lpfc_wwn_set(const char *buf, size_t cnt, char wwn[])
{
	unsigned int i, j;

	/* Count may include a LF at end of string */
	if (buf[cnt-1] == '\n')
		cnt--;

	if ((cnt < 16) || (cnt > 18) || ((cnt == 17) && (*buf++ != 'x')) ||
	    ((cnt == 18) && ((*buf++ != '0') || (*buf++ != 'x'))))
		return -EINVAL;

	memset(wwn, 0, WWN_SZ);

	/* Validate and store the new name */
	for (i = 0, j = 0; i < 16; i++) {
		if ((*buf >= 'a') && (*buf <= 'f'))
			j = ((j << 4) | ((*buf++ - 'a') + 10));
		else if ((*buf >= 'A') && (*buf <= 'F'))
			j = ((j << 4) | ((*buf++ - 'A') + 10));
		else if ((*buf >= '0') && (*buf <= '9'))
			j = ((j << 4) | (*buf++ - '0'));
		else
			return -EINVAL;
		if (i % 2) {
			wwn[i/2] = j & 0xff;
			j = 0;
		}
	}
	return 0;
}
/**
 * lpfc_soft_wwn_enable_store - Allows setting of the wwn if the key is valid
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: containing the string lpfc_soft_wwn_key.
 * @count: must be size of lpfc_soft_wwn_key.
 *
 * Returns:
 * -EINVAL if the buffer does not contain lpfc_soft_wwn_key
 * length of buf indicates success
 **/
static ssize_t
lpfc_soft_wwn_enable_store(struct device *dev, struct device_attribute *attr,
			   const char *buf, size_t count)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	unsigned int cnt = count;
	uint8_t vvvl = vport->fc_sparam.cmn.valid_vendor_ver_level;
	u32 *fawwpn_key = (uint32_t *)&vport->fc_sparam.un.vendorVersion[0];

	/*
	 * We're doing a simple sanity check for soft_wwpn setting.
	 * We require that the user write a specific key to enable
	 * the soft_wwpn attribute to be settable. Once the attribute
	 * is written, the enable key resets. If further updates are
	 * desired, the key must be written again to re-enable the
	 * attribute.
	 *
	 * The "key" is not secret - it is a hardcoded string shown
	 * here. The intent is to protect against the random user or
	 * application that is just writing attributes.
	 */
	if (vvvl == 1 && cpu_to_be32(*fawwpn_key) == FAPWWN_KEY_VENDOR) {
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
				 "0051 "LPFC_DRIVER_NAME" soft wwpn can not"
				 " be enabled: fawwpn is enabled\n");
		return -EINVAL;
	}

	/* count may include a LF at end of string */
	if (buf[cnt-1] == '\n')
		cnt--;

	if ((cnt != strlen(lpfc_soft_wwn_key)) ||
	    (strncmp(buf, lpfc_soft_wwn_key, strlen(lpfc_soft_wwn_key)) != 0))
		return -EINVAL;

	phba->soft_wwn_enable = 1;

	dev_printk(KERN_WARNING, &phba->pcidev->dev,
		   "lpfc%d: soft_wwpn assignment has been enabled.\n",
		   phba->brd_no);
	dev_printk(KERN_WARNING, &phba->pcidev->dev,
		   "  The soft_wwpn feature is not supported by Broadcom.");

	return count;
}
static DEVICE_ATTR(lpfc_soft_wwn_enable, S_IWUSR, NULL,
		   lpfc_soft_wwn_enable_store);

/**
 * lpfc_soft_wwpn_show - Return the cfg soft ww port name of the adapter
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: on return contains the wwpn in hexadecimal.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_soft_wwpn_show(struct device *dev, struct device_attribute *attr,
		    char *buf)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	return snprintf(buf, PAGE_SIZE, "0x%llx\n",
			(unsigned long long)phba->cfg_soft_wwpn);
}

/**
 * lpfc_soft_wwpn_store - Set the ww port name of the adapter
 * @dev class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: contains the wwpn in hexadecimal.
 * @count: number of wwpn bytes in buf
 *
 * Returns:
 * -EACCES hba reset not enabled, adapter over temp
 * -EINVAL soft wwn not enabled, count is invalid, invalid wwpn byte invalid
 * -EIO error taking adapter offline or online
 * value of count on success
 **/
static ssize_t
lpfc_soft_wwpn_store(struct device *dev, struct device_attribute *attr,
		     const char *buf, size_t count)
{
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	struct completion online_compl;
	int stat1 = 0, stat2 = 0;
	unsigned int cnt = count;
	u8 wwpn[WWN_SZ];
	int rc;

	if (!phba->cfg_enable_hba_reset)
		return -EACCES;
	spin_lock_irq(&phba->hbalock);
	if (phba->over_temp_state == HBA_OVER_TEMP) {
		spin_unlock_irq(&phba->hbalock);
		return -EACCES;
	}
	spin_unlock_irq(&phba->hbalock);
	/* count may include a LF at end of string */
	if (buf[cnt-1] == '\n')
		cnt--;

	if (!phba->soft_wwn_enable)
		return -EINVAL;

	/* lock setting wwpn, wwnn down */
	phba->soft_wwn_enable = 0;

	rc = lpfc_wwn_set(buf, cnt, wwpn);
	if (rc) {
		/* not able to set wwpn, unlock it */
		phba->soft_wwn_enable = 1;
		return rc;
	}

	phba->cfg_soft_wwpn = wwn_to_u64(wwpn);
	fc_host_port_name(shost) = phba->cfg_soft_wwpn;
	if (phba->cfg_soft_wwnn)
		fc_host_node_name(shost) = phba->cfg_soft_wwnn;

	dev_printk(KERN_NOTICE, &phba->pcidev->dev,
		   "lpfc%d: Reinitializing to use soft_wwpn\n", phba->brd_no);

	stat1 = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
	if (stat1)
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
				"0463 lpfc_soft_wwpn attribute set failed to "
				"reinit adapter - %d\n", stat1);
	init_completion(&online_compl);
	rc = lpfc_workq_post_event(phba, &stat2, &online_compl,
				   LPFC_EVT_ONLINE);
	if (rc == 0)
		return -ENOMEM;

	wait_for_completion(&online_compl);
	if (stat2)
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
				"0464 lpfc_soft_wwpn attribute set failed to "
				"reinit adapter - %d\n", stat2);
	return (stat1 || stat2) ? -EIO : count;
}
static DEVICE_ATTR(lpfc_soft_wwpn, S_IRUGO | S_IWUSR,
		   lpfc_soft_wwpn_show, lpfc_soft_wwpn_store);

/**
 * lpfc_soft_wwnn_show - Return the cfg soft ww node name for the adapter
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: on return contains the wwnn in hexadecimal.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_soft_wwnn_show(struct device *dev, struct device_attribute *attr,
		    char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
	return snprintf(buf, PAGE_SIZE, "0x%llx\n",
			(unsigned long long)phba->cfg_soft_wwnn);
}

/**
 * lpfc_soft_wwnn_store - sets the ww node name of the adapter
 * @cdev: class device that is converted into a Scsi_host.
 * @buf: contains the ww node name in hexadecimal.
 * @count: number of wwnn bytes in buf.
 *
 * Returns:
 * -EINVAL soft wwn not enabled, count is invalid, invalid wwnn byte invalid
 * value of count on success
 **/
static ssize_t
lpfc_soft_wwnn_store(struct device *dev, struct device_attribute *attr,
		     const char *buf, size_t count)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
	unsigned int cnt = count;
	u8 wwnn[WWN_SZ];
	int rc;

	/* count may include a LF at end of string */
	if (buf[cnt-1] == '\n')
		cnt--;

	if (!phba->soft_wwn_enable)
		return -EINVAL;

	rc = lpfc_wwn_set(buf, cnt, wwnn);
	if (rc) {
		/* Allow wwnn to be set many times, as long as the enable
		 * is set. However, once the wwpn is set, everything locks.
		 */
		return rc;
	}

	phba->cfg_soft_wwnn = wwn_to_u64(wwnn);

	dev_printk(KERN_NOTICE, &phba->pcidev->dev,
		   "lpfc%d: soft_wwnn set. Value will take effect upon "
		   "setting of the soft_wwpn\n", phba->brd_no);

	return count;
}
static DEVICE_ATTR(lpfc_soft_wwnn, S_IRUGO | S_IWUSR,
		   lpfc_soft_wwnn_show, lpfc_soft_wwnn_store);

/**
 * lpfc_oas_tgt_show - Return wwpn of target whose luns maybe enabled for
 *		      Optimized Access Storage (OAS) operations.
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: buffer for passing information.
 *
 * Returns:
 * value of count
 **/
static ssize_t
lpfc_oas_tgt_show(struct device *dev, struct device_attribute *attr,
		  char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;

	return snprintf(buf, PAGE_SIZE, "0x%llx\n",
			wwn_to_u64(phba->cfg_oas_tgt_wwpn));
}

/**
 * lpfc_oas_tgt_store - Store wwpn of target whose luns maybe enabled for
 *		      Optimized Access Storage (OAS) operations.
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: buffer for passing information.
 * @count: Size of the data buffer.
 *
 * Returns:
 * -EINVAL count is invalid, invalid wwpn byte invalid
 * -EPERM oas is not supported by hba
 * value of count on success
 **/
static ssize_t
lpfc_oas_tgt_store(struct device *dev, struct device_attribute *attr,
		   const char *buf, size_t count)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
	unsigned int cnt = count;
	uint8_t wwpn[WWN_SZ];
	int rc;

	if (!phba->cfg_fof)
		return -EPERM;

	/* count may include a LF at end of string */
	if (buf[cnt-1] == '\n')
		cnt--;

	rc = lpfc_wwn_set(buf, cnt, wwpn);
	if (rc)
		return rc;

	memcpy(phba->cfg_oas_tgt_wwpn, wwpn, (8 * sizeof(uint8_t)));
	memcpy(phba->sli4_hba.oas_next_tgt_wwpn, wwpn, (8 * sizeof(uint8_t)));
	if (wwn_to_u64(wwpn) == 0)
		phba->cfg_oas_flags |= OAS_FIND_ANY_TARGET;
	else
		phba->cfg_oas_flags &= ~OAS_FIND_ANY_TARGET;
	phba->cfg_oas_flags &= ~OAS_LUN_VALID;
	phba->sli4_hba.oas_next_lun = FIND_FIRST_OAS_LUN;
	return count;
}
static DEVICE_ATTR(lpfc_xlane_tgt, S_IRUGO | S_IWUSR,
		   lpfc_oas_tgt_show, lpfc_oas_tgt_store);

/**
 * lpfc_oas_priority_show - Return wwpn of target whose luns maybe enabled for
 *		      Optimized Access Storage (OAS) operations.
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: buffer for passing information.
 *
 * Returns:
 * value of count
 **/
static ssize_t
lpfc_oas_priority_show(struct device *dev, struct device_attribute *attr,
		       char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;

	return snprintf(buf, PAGE_SIZE, "%d\n", phba->cfg_oas_priority);
}

/**
 * lpfc_oas_priority_store - Store wwpn of target whose luns maybe enabled for
 *		      Optimized Access Storage (OAS) operations.
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: buffer for passing information.
 * @count: Size of the data buffer.
 *
 * Returns:
 * -EINVAL count is invalid, invalid wwpn byte invalid
 * -EPERM oas is not supported by hba
 * value of count on success
 **/
static ssize_t
lpfc_oas_priority_store(struct device *dev, struct device_attribute *attr,
			const char *buf, size_t count)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
	unsigned int cnt = count;
	unsigned long val;
	int ret;

	if (!phba->cfg_fof)
		return -EPERM;

	/* count may include a LF at end of string */
	if (buf[cnt-1] == '\n')
		cnt--;

	ret = kstrtoul(buf, 0, &val);
	if (ret || (val > 0x7f))
		return -EINVAL;

	if (val)
		phba->cfg_oas_priority = (uint8_t)val;
	else
		phba->cfg_oas_priority = phba->cfg_XLanePriority;
	return count;
}
static DEVICE_ATTR(lpfc_xlane_priority, S_IRUGO | S_IWUSR,
		   lpfc_oas_priority_show, lpfc_oas_priority_store);

/**
 * lpfc_oas_vpt_show - Return wwpn of vport whose targets maybe enabled
 *		      for Optimized Access Storage (OAS) operations.
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: buffer for passing information.
 *
 * Returns:
 * value of count on success
 **/
static ssize_t
lpfc_oas_vpt_show(struct device *dev, struct device_attribute *attr,
		  char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;

	return snprintf(buf, PAGE_SIZE, "0x%llx\n",
			wwn_to_u64(phba->cfg_oas_vpt_wwpn));
}

/**
 * lpfc_oas_vpt_store - Store wwpn of vport whose targets maybe enabled
 *		      for Optimized Access Storage (OAS) operations.
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: buffer for passing information.
 * @count: Size of the data buffer.
 *
 * Returns:
 * -EINVAL count is invalid, invalid wwpn byte invalid
 * -EPERM oas is not supported by hba
 * value of count on success
 **/
static ssize_t
lpfc_oas_vpt_store(struct device *dev, struct device_attribute *attr,
		   const char *buf, size_t count)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
	unsigned int cnt = count;
	uint8_t wwpn[WWN_SZ];
	int rc;

	if (!phba->cfg_fof)
		return -EPERM;

	/* count may include a LF at end of string */
	if (buf[cnt-1] == '\n')
		cnt--;

	rc = lpfc_wwn_set(buf, cnt, wwpn);
	if (rc)
		return rc;

	memcpy(phba->cfg_oas_vpt_wwpn, wwpn, (8 * sizeof(uint8_t)));
	memcpy(phba->sli4_hba.oas_next_vpt_wwpn, wwpn, (8 * sizeof(uint8_t)));
	if (wwn_to_u64(wwpn) == 0)
		phba->cfg_oas_flags |= OAS_FIND_ANY_VPORT;
	else
		phba->cfg_oas_flags &= ~OAS_FIND_ANY_VPORT;
	phba->cfg_oas_flags &= ~OAS_LUN_VALID;
	if (phba->cfg_oas_priority == 0)
		phba->cfg_oas_priority = phba->cfg_XLanePriority;
	phba->sli4_hba.oas_next_lun = FIND_FIRST_OAS_LUN;
	return count;
}
static DEVICE_ATTR(lpfc_xlane_vpt, S_IRUGO | S_IWUSR,
		   lpfc_oas_vpt_show, lpfc_oas_vpt_store);

/**
 * lpfc_oas_lun_state_show - Return the current state (enabled or disabled)
 *			    of whether luns will be enabled or disabled
 *			    for Optimized Access Storage (OAS) operations.
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: buffer for passing information.
 *
 * Returns:
 * size of formatted string.
 **/
static ssize_t
lpfc_oas_lun_state_show(struct device *dev, struct device_attribute *attr,
			char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;

	return snprintf(buf, PAGE_SIZE, "%d\n", phba->cfg_oas_lun_state);
}

/**
 * lpfc_oas_lun_state_store - Store the state (enabled or disabled)
 *			    of whether luns will be enabled or disabled
 *			    for Optimized Access Storage (OAS) operations.
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: buffer for passing information.
 * @count: Size of the data buffer.
 *
 * Returns:
 * -EINVAL count is invalid, invalid wwpn byte invalid
 * -EPERM oas is not supported by hba
 * value of count on success
 **/
static ssize_t
lpfc_oas_lun_state_store(struct device *dev, struct device_attribute *attr,
			 const char *buf, size_t count)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
	int val = 0;

	if (!phba->cfg_fof)
		return -EPERM;

	if (!isdigit(buf[0]))
		return -EINVAL;

	if (sscanf(buf, "%i", &val) != 1)
		return -EINVAL;

	if ((val != 0) && (val != 1))
		return -EINVAL;

	phba->cfg_oas_lun_state = val;
	return strlen(buf);
}
static DEVICE_ATTR(lpfc_xlane_lun_state, S_IRUGO | S_IWUSR,
		   lpfc_oas_lun_state_show, lpfc_oas_lun_state_store);

/**
 * lpfc_oas_lun_status_show - Return the status of the Optimized Access
 *                          Storage (OAS) lun returned by the
 *                          lpfc_oas_lun_show function.
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: buffer for passing information.
 *
 * Returns:
 * size of formatted string.
 **/
static ssize_t
lpfc_oas_lun_status_show(struct device *dev, struct device_attribute *attr,
			 char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;

	if (!(phba->cfg_oas_flags & OAS_LUN_VALID))
		return -EFAULT;

	return snprintf(buf, PAGE_SIZE, "%d\n", phba->cfg_oas_lun_status);
}
static DEVICE_ATTR(lpfc_xlane_lun_status, S_IRUGO,
		   lpfc_oas_lun_status_show, NULL);


/**
 * lpfc_oas_lun_state_set - enable or disable a lun for Optimized Access Storage
 *			   (OAS) operations.
 * @phba: lpfc_hba pointer.
 * @ndlp: pointer to fcp target node.
 * @lun: the fc lun for setting oas state.
 * @oas_state: the oas state to be set to the lun.
 *
 * Returns:
 * SUCCESS : 0
 * -EPERM OAS is not enabled or not supported by this port.
 *
 */
static size_t
lpfc_oas_lun_state_set(struct lpfc_hba *phba, uint8_t vpt_wwpn[],
		       uint8_t tgt_wwpn[], uint64_t lun,
		       uint32_t oas_state, uint8_t pri)
{

	int rc = 0;

	if (!phba->cfg_fof)
		return -EPERM;

	if (oas_state) {
		if (!lpfc_enable_oas_lun(phba, (struct lpfc_name *)vpt_wwpn,
					 (struct lpfc_name *)tgt_wwpn,
					 lun, pri))
			rc = -ENOMEM;
	} else {
		lpfc_disable_oas_lun(phba, (struct lpfc_name *)vpt_wwpn,
				     (struct lpfc_name *)tgt_wwpn, lun, pri);
	}
	return rc;

}

/**
 * lpfc_oas_lun_get_next - get the next lun that has been enabled for Optimized
 *			  Access Storage (OAS) operations.
 * @phba: lpfc_hba pointer.
 * @vpt_wwpn: wwpn of the vport associated with the returned lun
 * @tgt_wwpn: wwpn of the target associated with the returned lun
 * @lun_status: status of the lun returned lun
 *
 * Returns the first or next lun enabled for OAS operations for the vport/target
 * specified.  If a lun is found, its vport wwpn, target wwpn and status is
 * returned.  If the lun is not found, NOT_OAS_ENABLED_LUN is returned.
 *
 * Return:
 * lun that is OAS enabled for the vport/target
 * NOT_OAS_ENABLED_LUN when no oas enabled lun found.
 */
static uint64_t
lpfc_oas_lun_get_next(struct lpfc_hba *phba, uint8_t vpt_wwpn[],
		      uint8_t tgt_wwpn[], uint32_t *lun_status,
		      uint32_t *lun_pri)
{
	uint64_t found_lun;

	if (unlikely(!phba) || !vpt_wwpn || !tgt_wwpn)
		return NOT_OAS_ENABLED_LUN;
	if (lpfc_find_next_oas_lun(phba, (struct lpfc_name *)
				   phba->sli4_hba.oas_next_vpt_wwpn,
				   (struct lpfc_name *)
				   phba->sli4_hba.oas_next_tgt_wwpn,
				   &phba->sli4_hba.oas_next_lun,
				   (struct lpfc_name *)vpt_wwpn,
				   (struct lpfc_name *)tgt_wwpn,
				   &found_lun, lun_status, lun_pri))
		return found_lun;
	else
		return NOT_OAS_ENABLED_LUN;
}

/**
 * lpfc_oas_lun_state_change - enable/disable a lun for OAS operations
 * @phba: lpfc_hba pointer.
 * @vpt_wwpn: vport wwpn by reference.
 * @tgt_wwpn: target wwpn by reference.
 * @lun: the fc lun for setting oas state.
 * @oas_state: the oas state to be set to the oas_lun.
 *
 * This routine enables (OAS_LUN_ENABLE) or disables (OAS_LUN_DISABLE)
 * a lun for OAS operations.
 *
 * Return:
 * SUCCESS: 0
 * -ENOMEM: failed to enable an lun for OAS operations
 * -EPERM: OAS is not enabled
 */
static ssize_t
lpfc_oas_lun_state_change(struct lpfc_hba *phba, uint8_t vpt_wwpn[],
			  uint8_t tgt_wwpn[], uint64_t lun,
			  uint32_t oas_state, uint8_t pri)
{

	int rc;

	rc = lpfc_oas_lun_state_set(phba, vpt_wwpn, tgt_wwpn, lun,
				    oas_state, pri);
	return rc;
}

/**
 * lpfc_oas_lun_show - Return oas enabled luns from a chosen target
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: buffer for passing information.
 *
 * This routine returns a lun enabled for OAS each time the function
 * is called.
 *
 * Returns:
 * SUCCESS: size of formatted string.
 * -EFAULT: target or vport wwpn was not set properly.
 * -EPERM: oas is not enabled.
 **/
static ssize_t
lpfc_oas_lun_show(struct device *dev, struct device_attribute *attr,
		  char *buf)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;

	uint64_t oas_lun;
	int len = 0;

	if (!phba->cfg_fof)
		return -EPERM;

	if (wwn_to_u64(phba->cfg_oas_vpt_wwpn) == 0)
		if (!(phba->cfg_oas_flags & OAS_FIND_ANY_VPORT))
			return -EFAULT;

	if (wwn_to_u64(phba->cfg_oas_tgt_wwpn) == 0)
		if (!(phba->cfg_oas_flags & OAS_FIND_ANY_TARGET))
			return -EFAULT;

	oas_lun = lpfc_oas_lun_get_next(phba, phba->cfg_oas_vpt_wwpn,
					phba->cfg_oas_tgt_wwpn,
					&phba->cfg_oas_lun_status,
					&phba->cfg_oas_priority);
	if (oas_lun != NOT_OAS_ENABLED_LUN)
		phba->cfg_oas_flags |= OAS_LUN_VALID;

	len += snprintf(buf + len, PAGE_SIZE-len, "0x%llx", oas_lun);

	return len;
}

/**
 * lpfc_oas_lun_store - Sets the OAS state for lun
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: buffer for passing information.
 *
 * This function sets the OAS state for lun.  Before this function is called,
 * the vport wwpn, target wwpn, and oas state need to be set.
 *
 * Returns:
 * SUCCESS: size of formatted string.
 * -EFAULT: target or vport wwpn was not set properly.
 * -EPERM: oas is not enabled.
 * size of formatted string.
 **/
static ssize_t
lpfc_oas_lun_store(struct device *dev, struct device_attribute *attr,
		   const char *buf, size_t count)
{
	struct Scsi_Host *shost = class_to_shost(dev);
	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
	uint64_t scsi_lun;
	uint32_t pri;
	ssize_t rc;

	if (!phba->cfg_fof)
		return -EPERM;

	if (wwn_to_u64(phba->cfg_oas_vpt_wwpn) == 0)
		return -EFAULT;

	if (wwn_to_u64(phba->cfg_oas_tgt_wwpn) == 0)
		return -EFAULT;

	if (!isdigit(buf[0]))
		return -EINVAL;

	if (sscanf(buf, "0x%llx", &scsi_lun) != 1)
		return -EINVAL;

	pri = phba->cfg_oas_priority;
	if (pri == 0)
		pri = phba->cfg_XLanePriority;

	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
			"3372 Try to set vport 0x%llx target 0x%llx lun:0x%llx "
			"priority 0x%x with oas state %d\n",
			wwn_to_u64(phba->cfg_oas_vpt_wwpn),
			wwn_to_u64(phba->cfg_oas_tgt_wwpn), scsi_lun,
			pri, phba->cfg_oas_lun_state);

	rc = lpfc_oas_lun_state_change(phba, phba->cfg_oas_vpt_wwpn,
				       phba->cfg_oas_tgt_wwpn, scsi_lun,
				       phba->cfg_oas_lun_state, pri);
	if (rc)
		return rc;

	return count;
}
static DEVICE_ATTR(lpfc_xlane_lun, S_IRUGO | S_IWUSR,
		   lpfc_oas_lun_show, lpfc_oas_lun_store);

int lpfc_enable_nvmet_cnt;
unsigned long long lpfc_enable_nvmet[LPFC_NVMET_MAX_PORTS] = {
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
module_param_array(lpfc_enable_nvmet, ullong, &lpfc_enable_nvmet_cnt, 0444);
MODULE_PARM_DESC(lpfc_enable_nvmet, "Enable HBA port(s) WWPN as a NVME Target");

static int lpfc_poll = 0;
module_param(lpfc_poll, int, S_IRUGO);
MODULE_PARM_DESC(lpfc_poll, "FCP ring polling mode control:"
		 " 0 - none,"
		 " 1 - poll with interrupts enabled"
		 " 3 - poll and disable FCP ring interrupts");

static DEVICE_ATTR(lpfc_poll, S_IRUGO | S_IWUSR,
		   lpfc_poll_show, lpfc_poll_store);

int lpfc_no_hba_reset_cnt;
unsigned long lpfc_no_hba_reset[MAX_HBAS_NO_RESET] = {
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
module_param_array(lpfc_no_hba_reset, ulong, &lpfc_no_hba_reset_cnt, 0444);
MODULE_PARM_DESC(lpfc_no_hba_reset, "WWPN of HBAs that should not be reset");

LPFC_ATTR(sli_mode, 0, 0, 3,
	"SLI mode selector:"
	" 0 - auto (SLI-3 if supported),"
	" 2 - select SLI-2 even on SLI-3 capable HBAs,"
	" 3 - select SLI-3");

LPFC_ATTR_R(enable_npiv, 1, 0, 1,
	"Enable NPIV functionality");

LPFC_ATTR_R(fcf_failover_policy, 1, 1, 2,
	"FCF Fast failover=1 Priority failover=2");

/*
# lpfc_enable_rrq: Track XRI/OXID reuse after IO failures
#	0x0 = disabled, XRI/OXID use not tracked.
#	0x1 = XRI/OXID reuse is timed with ratov, RRQ sent.
#	0x2 = XRI/OXID reuse is timed with ratov, No RRQ sent.
*/
LPFC_ATTR_R(enable_rrq, 2, 0, 2,
	"Enable RRQ functionality");