lpfc_attr.c 172.1 KB
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/*******************************************************************
 * This file is part of the Emulex Linux Device Driver for         *
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 * Fibre Channel Host Bus Adapters.                                *
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 * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
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 * EMULEX and SLI are trademarks of Emulex.                        *
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 * www.emulex.com                                                  *
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 * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
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 *                                                                 *
 * This program is free software; you can redistribute it and/or   *
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 * 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.                                     *
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 *******************************************************************/

#include <linux/ctype.h>
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#include <linux/delay.h>
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#include <linux/pci.h>
#include <linux/interrupt.h>
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#include <linux/module.h>
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#include <linux/aer.h>
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#include <linux/gfp.h>
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#include <linux/kernel.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_transport_fc.h>
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#include <scsi/fc/fc_fs.h>
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#include "lpfc_hw4.h"
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#include "lpfc_hw.h"
#include "lpfc_sli.h"
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#include "lpfc_sli4.h"
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#include "lpfc_nl.h"
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#include "lpfc_disc.h"
#include "lpfc_scsi.h"
#include "lpfc.h"
#include "lpfc_logmsg.h"
#include "lpfc_version.h"
#include "lpfc_compat.h"
#include "lpfc_crtn.h"
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#include "lpfc_vport.h"
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#include "lpfc_attr.h"
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#define LPFC_DEF_DEVLOSS_TMO 30
#define LPFC_MIN_DEVLOSS_TMO 1
#define LPFC_MAX_DEVLOSS_TMO 255
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/*
 * 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"

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/**
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 * lpfc_jedec_to_ascii - Hex to ascii convertor according to JEDEC rules
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 * @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.
 **/
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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;
}

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

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/**
 * 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");
}

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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;

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

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;

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

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;

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

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/**
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 * lpfc_info_show - Return some pci info about the host in ascii
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 * @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.
 **/
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static ssize_t
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lpfc_info_show(struct device *dev, struct device_attribute *attr,
	       char *buf)
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{
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	struct Scsi_Host *host = class_to_shost(dev);
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	return snprintf(buf, PAGE_SIZE, "%s\n",lpfc_info(host));
}

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/**
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 * lpfc_serialnum_show - Return the hba serial number in ascii
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 * @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.
 **/
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static ssize_t
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lpfc_serialnum_show(struct device *dev, struct device_attribute *attr,
		    char *buf)
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{
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	struct Scsi_Host  *shost = class_to_shost(dev);
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	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

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

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/**
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 * lpfc_temp_sensor_show - Return the temperature sensor level
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 * @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.
 **/
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static ssize_t
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lpfc_temp_sensor_show(struct device *dev, struct device_attribute *attr,
		      char *buf)
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{
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	struct Scsi_Host *shost = class_to_shost(dev);
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	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);
}

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/**
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 * lpfc_modeldesc_show - Return the model description of the hba
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 * @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.
 **/
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static ssize_t
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lpfc_modeldesc_show(struct device *dev, struct device_attribute *attr,
		    char *buf)
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{
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	struct Scsi_Host  *shost = class_to_shost(dev);
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	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

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

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/**
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 * lpfc_modelname_show - Return the model name of the hba
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 * @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.
 **/
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static ssize_t
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lpfc_modelname_show(struct device *dev, struct device_attribute *attr,
		    char *buf)
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{
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	struct Scsi_Host  *shost = class_to_shost(dev);
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	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

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

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/**
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 * lpfc_programtype_show - Return the program type of the hba
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 * @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.
 **/
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static ssize_t
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lpfc_programtype_show(struct device *dev, struct device_attribute *attr,
		      char *buf)
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{
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	struct Scsi_Host  *shost = class_to_shost(dev);
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	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

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

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/**
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 * lpfc_mlomgmt_show - Return the Menlo Maintenance sli flag
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 * @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));
}

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/**
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 * lpfc_vportnum_show - Return the port number in ascii of the hba
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 * @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.
 **/
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static ssize_t
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lpfc_vportnum_show(struct device *dev, struct device_attribute *attr,
		   char *buf)
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{
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	struct Scsi_Host  *shost = class_to_shost(dev);
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	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

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

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/**
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 * lpfc_fwrev_show - Return the firmware rev running in the hba
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 * @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.
 **/
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static ssize_t
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lpfc_fwrev_show(struct device *dev, struct device_attribute *attr,
		char *buf)
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{
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	struct Scsi_Host  *shost = class_to_shost(dev);
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	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
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	uint32_t if_type;
	uint8_t sli_family;
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	char fwrev[FW_REV_STR_SIZE];
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	int len;
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	lpfc_decode_firmware_rev(phba, fwrev, 1);
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	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;
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}

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/**
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 * lpfc_hdw_show - Return the jedec information about the hba
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 * @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.
 **/
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static ssize_t
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lpfc_hdw_show(struct device *dev, struct device_attribute *attr, char *buf)
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{
	char hdw[9];
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	struct Scsi_Host  *shost = class_to_shost(dev);
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	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
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	lpfc_vpd_t *vp = &phba->vpd;
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	lpfc_jedec_to_ascii(vp->rev.biuRev, hdw);
	return snprintf(buf, PAGE_SIZE, "%s\n", hdw);
}
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/**
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 * lpfc_option_rom_version_show - Return the adapter ROM FCode version
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 * @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.
 **/
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static ssize_t
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lpfc_option_rom_version_show(struct device *dev, struct device_attribute *attr,
			     char *buf)
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{
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	struct Scsi_Host  *shost = class_to_shost(dev);
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	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
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	char fwrev[FW_REV_STR_SIZE];

	if (phba->sli_rev < LPFC_SLI_REV4)
		return snprintf(buf, PAGE_SIZE, "%s\n", phba->OptionROMVersion);
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	lpfc_decode_firmware_rev(phba, fwrev, 1);
	return snprintf(buf, PAGE_SIZE, "%s\n", fwrev);
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}
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/**
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 * lpfc_state_show - Return the link state of the port
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 * @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.
 **/
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static ssize_t
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lpfc_link_state_show(struct device *dev, struct device_attribute *attr,
		     char *buf)
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{
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	struct Scsi_Host  *shost = class_to_shost(dev);
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	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:
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	case LPFC_WARM_START:
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	case LPFC_INIT_START:
	case LPFC_INIT_MBX_CMDS:
	case LPFC_LINK_DOWN:
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	case LPFC_HBA_ERROR:
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		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");
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		break;
	case LPFC_LINK_UP:
	case LPFC_CLEAR_LA:
	case LPFC_HBA_READY:
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		len += snprintf(buf + len, PAGE_SIZE-len, "Link Up - ");
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		switch (vport->port_state) {
		case LPFC_LOCAL_CFG_LINK:
			len += snprintf(buf + len, PAGE_SIZE-len,
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					"Configuring Link\n");
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			break;
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		case LPFC_FDISC:
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		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;

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

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

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/**
 * 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");
}

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/**
 * 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);
}

558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581
/**
 * 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))
582
		status = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);
583 584
	else if ((strncmp(buf, "down", sizeof("down") - 1) == 0) &&
			(phba->link_state >= LPFC_LINK_UP))
585
		status = phba->lpfc_hba_down_link(phba, MBX_NOWAIT);
586 587 588 589 590 591 592

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

593
/**
594
 * lpfc_num_discovered_ports_show - Return sum of mapped and unmapped vports
595 596 597 598 599 600 601 602 603 604
 * @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.
 **/
已提交
605
static ssize_t
606 607
lpfc_num_discovered_ports_show(struct device *dev,
			       struct device_attribute *attr, char *buf)
已提交
608
{
609
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
610 611 612 613
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;

	return snprintf(buf, PAGE_SIZE, "%d\n",
			vport->fc_map_cnt + vport->fc_unmap_cnt);
已提交
614 615
}

616
/**
617
 * lpfc_issue_lip - Misnomer, name carried over from long ago
618 619 620 621 622 623 624 625 626 627 628 629
 * @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
 **/
630
static int
J
James Smart 已提交
631
lpfc_issue_lip(struct Scsi_Host *shost)
已提交
632
{
J
James Smart 已提交
633 634
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
已提交
635 636 637
	LPFC_MBOXQ_t *pmboxq;
	int mbxstatus = MBXERR_ERROR;

J
James Smart 已提交
638
	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
639
	    (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO))
已提交
640 641 642 643 644 645 646 647
		return -EPERM;

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

	if (!pmboxq)
		return -ENOMEM;

	memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
648 649
	pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK;
	pmboxq->u.mb.mbxOwner = OWN_HOST;
650

J
James Smart 已提交
651
	mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO * 2);
已提交
652

653 654 655
	if ((mbxstatus == MBX_SUCCESS) &&
	    (pmboxq->u.mb.mbxStatus == 0 ||
	     pmboxq->u.mb.mbxStatus == MBXERR_LINK_DOWN)) {
656 657 658 659 660
		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);
661 662 663 664 665
		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");
666 667
	}

668
	lpfc_set_loopback_flag(phba);
J
James Smart 已提交
669
	if (mbxstatus != MBX_TIMEOUT)
670
		mempool_free(pmboxq, phba->mbox_mem_pool);
已提交
671 672 673 674

	if (mbxstatus == MBXERR_ERROR)
		return -EIO;

675
	return 0;
已提交
676 677
}

678
/**
679
 * lpfc_do_offline - Issues a mailbox command to bring the link down
680 681 682 683 684 685 686
 * @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.
687
 * lpfc_workq_post_event() returns a non-zero return code if call fails.
688 689 690 691 692
 *
 * Returns:
 * -EIO error posting the event
 * zero for success
 **/
693
static int
694
lpfc_do_offline(struct lpfc_hba *phba, uint32_t type)
695 696
{
	struct completion online_compl;
697 698
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
699
	int status = 0;
700 701
	int cnt = 0;
	int i;
702
	int rc;
703 704

	init_completion(&online_compl);
705
	rc = lpfc_workq_post_event(phba, &status, &online_compl,
706
			      LPFC_EVT_OFFLINE_PREP);
707 708 709
	if (rc == 0)
		return -ENOMEM;

710 711 712 713 714 715 716
	wait_for_completion(&online_compl);

	if (status != 0)
		return -EIO;

	psli = &phba->sli;

717 718 719
	/* Wait a little for things to settle down, but not
	 * long enough for dev loss timeout to expire.
	 */
720 721
	for (i = 0; i < psli->num_rings; i++) {
		pring = &psli->ring[i];
722
		while (!list_empty(&pring->txcmplq)) {
723
			msleep(10);
724
			if (cnt++ > 500) {  /* 5 secs */
725 726
				lpfc_printf_log(phba,
					KERN_WARNING, LOG_INIT,
727 728
					"0466 Outstanding IO when "
					"bringing Adapter offline\n");
729 730 731 732 733 734
				break;
			}
		}
	}

	init_completion(&online_compl);
735 736 737 738
	rc = lpfc_workq_post_event(phba, &status, &online_compl, type);
	if (rc == 0)
		return -ENOMEM;

739 740 741 742 743
	wait_for_completion(&online_compl);

	if (status != 0)
		return -EIO;

744 745 746
	return 0;
}

747
/**
748
 * lpfc_selective_reset - Offline then onlines the port
749 750 751 752 753 754 755 756
 * @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.
757
 * Do not make this function static.
758 759 760 761 762 763
 *
 * Returns:
 * lpfc_do_offline() return code if not zero
 * -EIO reset not configured or error posting the event
 * zero for success
 **/
764
int
765 766 767 768
lpfc_selective_reset(struct lpfc_hba *phba)
{
	struct completion online_compl;
	int status = 0;
769
	int rc;
770

771
	if (!phba->cfg_enable_hba_reset)
772
		return -EACCES;
773

774 775
	if (!(phba->pport->fc_flag & FC_OFFLINE_MODE)) {
		status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
776

777 778 779
		if (status != 0)
			return status;
	}
780

781
	init_completion(&online_compl);
782
	rc = lpfc_workq_post_event(phba, &status, &online_compl,
783
			      LPFC_EVT_ONLINE);
784 785 786
	if (rc == 0)
		return -ENOMEM;

787 788 789 790 791 792 793 794
	wait_for_completion(&online_compl);

	if (status != 0)
		return -EIO;

	return 0;
}

795
/**
796
 * lpfc_issue_reset - Selectively resets an adapter
797 798 799 800 801 802 803 804 805 806 807 808
 * @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
809
 * is returned which indicates success
810 811 812 813 814 815
 *
 * 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
**/
816
static ssize_t
817 818
lpfc_issue_reset(struct device *dev, struct device_attribute *attr,
		 const char *buf, size_t count)
819
{
820
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
821 822
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
823 824
	int status = -EINVAL;

825 826 827
	if (!phba->cfg_enable_hba_reset)
		return -EACCES;

828
	if (strncmp(buf, "selective", sizeof("selective") - 1) == 0)
829
		status = phba->lpfc_selective_reset(phba);
830 831 832 833 834 835 836

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

837 838 839 840 841 842 843 844 845
/**
 * 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:
M
Masanari Iida 已提交
846
 * zero for success, -EPERM when port does not have privilege to perform the
847 848 849 850 851
 * 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.
852
 **/
853
int
854 855
lpfc_sli4_pdev_status_reg_wait(struct lpfc_hba *phba)
{
856
	struct lpfc_register portstat_reg = {0};
857 858
	int i;

859
	msleep(100);
860 861 862
	lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
		   &portstat_reg.word0);

M
Masanari Iida 已提交
863
	/* verify if privileged for the request operation */
864 865 866 867
	if (!bf_get(lpfc_sliport_status_rn, &portstat_reg) &&
	    !bf_get(lpfc_sliport_status_err, &portstat_reg))
		return -EPERM;

868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887
	/* 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;
}

888
/**
889
 * lpfc_sli4_pdev_reg_request - Request physical dev to perform a register acc
890 891 892
 * @phba: lpfc_hba pointer.
 *
 * Description:
893 894
 * Request SLI4 interface type-2 device to perform a physical register set
 * access.
895 896 897 898 899
 *
 * Returns:
 * zero for success
 **/
static ssize_t
900
lpfc_sli4_pdev_reg_request(struct lpfc_hba *phba, uint32_t opcode)
901 902
{
	struct completion online_compl;
903
	struct pci_dev *pdev = phba->pcidev;
904 905
	uint32_t before_fc_flag;
	uint32_t sriov_nr_virtfn;
906
	uint32_t reg_val;
907 908
	int status = 0, rc = 0;
	int job_posted = 1, sriov_err;
909 910

	if (!phba->cfg_enable_hba_reset)
911
		return -EACCES;
912

913 914 915 916 917
	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;

918 919 920 921
	/* Keep state if we need to restore back */
	before_fc_flag = phba->pport->fc_flag;
	sriov_nr_virtfn = phba->cfg_sriov_nr_virtfn;

922 923 924 925 926
	/* Disable SR-IOV virtual functions if enabled */
	if (phba->cfg_sriov_nr_virtfn) {
		pci_disable_sriov(pdev);
		phba->cfg_sriov_nr_virtfn = 0;
	}
927

J
James Smart 已提交
928 929 930
	if (opcode == LPFC_FW_DUMP)
		phba->hba_flag |= HBA_FW_DUMP_OP;

931 932
	status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);

J
James Smart 已提交
933 934
	if (status != 0) {
		phba->hba_flag &= ~HBA_FW_DUMP_OP;
935
		return status;
J
James Smart 已提交
936
	}
937 938 939 940 941 942

	/* 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);
943 944 945 946 947 948 949 950

	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;

951 952 953 954 955 956
	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 */
957 958
	rc = lpfc_sli4_pdev_status_reg_wait(phba);

959
	if (rc == -EPERM) {
M
Masanari Iida 已提交
960
		/* no privilege for reset */
961
		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
M
Masanari Iida 已提交
962
				"3150 No privilege to perform the requested "
963
				"access: x%x\n", reg_val);
964 965
	} else if (rc == -EIO) {
		/* reset failed, there is nothing more we can do */
966 967 968
		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
				"3153 Fail to perform the requested "
				"access: x%x\n", reg_val);
969
		return rc;
970 971 972 973 974
	}

	/* keep the original port state */
	if (before_fc_flag & FC_OFFLINE_MODE)
		goto out;
975 976

	init_completion(&online_compl);
977 978 979 980
	job_posted = lpfc_workq_post_event(phba, &status, &online_compl,
					   LPFC_EVT_ONLINE);
	if (!job_posted)
		goto out;
981 982 983

	wait_for_completion(&online_compl);

984 985 986 987 988 989 990 991
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;
	}
992

993 994 995 996 997 998 999 1000
	/* return proper error code */
	if (!rc) {
		if (!job_posted)
			rc = -ENOMEM;
		else if (status)
			rc = -EIO;
	}
	return rc;
1001 1002
}

1003
/**
1004
 * lpfc_nport_evt_cnt_show - Return the number of nport events
1005 1006 1007 1008 1009 1010
 * @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.
 **/
已提交
1011
static ssize_t
1012 1013
lpfc_nport_evt_cnt_show(struct device *dev, struct device_attribute *attr,
			char *buf)
已提交
1014
{
1015
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
1016 1017 1018
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

已提交
1019 1020 1021
	return snprintf(buf, PAGE_SIZE, "%d\n", phba->nport_event_cnt);
}

1022
/**
1023
 * lpfc_board_mode_show - Return the state of the board
1024 1025 1026 1027 1028 1029
 * @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.
 **/
1030
static ssize_t
1031 1032
lpfc_board_mode_show(struct device *dev, struct device_attribute *attr,
		     char *buf)
1033
{
1034
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
1035 1036
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
1037 1038
	char  * state;

J
James Smart 已提交
1039
	if (phba->link_state == LPFC_HBA_ERROR)
1040
		state = "error";
J
James Smart 已提交
1041
	else if (phba->link_state == LPFC_WARM_START)
1042
		state = "warm start";
J
James Smart 已提交
1043
	else if (phba->link_state == LPFC_INIT_START)
1044 1045 1046 1047 1048 1049 1050
		state = "offline";
	else
		state = "online";

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

1051
/**
1052
 * lpfc_board_mode_store - Puts the hba in online, offline, warm or error state
1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063
 * @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
 **/
1064
static ssize_t
1065 1066
lpfc_board_mode_store(struct device *dev, struct device_attribute *attr,
		      const char *buf, size_t count)
1067
{
1068
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
1069 1070
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
1071
	struct completion online_compl;
1072 1073
	char *board_mode_str = NULL;
	int status = 0;
1074
	int rc;
1075

1076 1077 1078 1079
	if (!phba->cfg_enable_hba_reset) {
		status = -EACCES;
		goto board_mode_out;
	}
1080 1081

	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
1082
			 "3050 lpfc_board_mode set to %s\n", buf);
1083

1084 1085
	init_completion(&online_compl);

1086
	if(strncmp(buf, "online", sizeof("online") - 1) == 0) {
1087
		rc = lpfc_workq_post_event(phba, &status, &online_compl,
1088
				      LPFC_EVT_ONLINE);
1089 1090 1091 1092
		if (rc == 0) {
			status = -ENOMEM;
			goto board_mode_out;
		}
1093 1094 1095
		wait_for_completion(&online_compl);
	} else if (strncmp(buf, "offline", sizeof("offline") - 1) == 0)
		status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
1096
	else if (strncmp(buf, "warm", sizeof("warm") - 1) == 0)
1097
		if (phba->sli_rev == LPFC_SLI_REV4)
1098
			status = -EINVAL;
1099 1100
		else
			status = lpfc_do_offline(phba, LPFC_EVT_WARM_START);
1101
	else if (strncmp(buf, "error", sizeof("error") - 1) == 0)
1102
		if (phba->sli_rev == LPFC_SLI_REV4)
1103
			status = -EINVAL;
1104 1105
		else
			status = lpfc_do_offline(phba, LPFC_EVT_KILL);
1106
	else if (strncmp(buf, "dump", sizeof("dump") - 1) == 0)
1107 1108 1109 1110 1111
		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);
1112
	else
1113
		status = -EINVAL;
1114

1115
board_mode_out:
1116 1117
	if (!status)
		return strlen(buf);
1118 1119 1120 1121 1122 1123 1124 1125
	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);
1126
		return status;
1127
	}
1128 1129
}

1130
/**
1131
 * lpfc_get_hba_info - Return various bits of informaton about the adapter
1132
 * @phba: pointer to the adapter structure.
1133 1134 1135 1136 1137 1138
 * @mxri: max xri count.
 * @axri: available xri count.
 * @mrpi: max rpi count.
 * @arpi: available rpi count.
 * @mvpi: max vpi count.
 * @avpi: available vpi count.
1139 1140 1141 1142 1143 1144 1145 1146 1147
 *
 * 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
 **/
J
James Smart 已提交
1148
static int
J
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1149 1150 1151 1152
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)
1153
{
1154
	struct lpfc_mbx_read_config *rd_config;
1155 1156 1157
	LPFC_MBOXQ_t *pmboxq;
	MAILBOX_t *pmb;
	int rc = 0;
1158
	uint32_t max_vpi;
1159 1160 1161 1162 1163 1164 1165

	/*
	 * prevent udev from issuing mailbox commands until the port is
	 * configured.
	 */
	if (phba->link_state < LPFC_LINK_DOWN ||
	    !phba->mbox_mem_pool ||
1166
	    (phba->sli.sli_flag & LPFC_SLI_ACTIVE) == 0)
1167 1168 1169 1170 1171 1172 1173 1174 1175 1176
		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));

1177
	pmb = &pmboxq->u.mb;
1178 1179 1180 1181
	pmb->mbxCommand = MBX_READ_CONFIG;
	pmb->mbxOwner = OWN_HOST;
	pmboxq->context1 = NULL;

1182
	if (phba->pport->fc_flag & FC_OFFLINE_MODE)
1183 1184 1185 1186 1187
		rc = MBX_NOT_FINISHED;
	else
		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);

	if (rc != MBX_SUCCESS) {
J
James Smart 已提交
1188
		if (rc != MBX_TIMEOUT)
1189 1190 1191 1192
			mempool_free(pmboxq, phba->mbox_mem_pool);
		return 0;
	}

1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204
	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;
1205 1206 1207 1208 1209 1210 1211

		/* 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;

1212
		if (mvpi)
1213
			*mvpi = max_vpi;
1214
		if (avpi)
1215
			*avpi = max_vpi - phba->sli4_hba.max_cfg_param.vpi_used;
1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229
	} 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;
	}
1230 1231 1232 1233 1234

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

1235
/**
1236
 * lpfc_max_rpi_show - Return maximum rpi
1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248
 * @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.
 **/
1249
static ssize_t
1250 1251
lpfc_max_rpi_show(struct device *dev, struct device_attribute *attr,
		  char *buf)
1252
{
1253
	struct Scsi_Host  *shost = class_to_shost(dev);
1254 1255 1256 1257
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	uint32_t cnt;

J
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1258
	if (lpfc_get_hba_info(phba, NULL, NULL, &cnt, NULL, NULL, NULL))
1259 1260 1261 1262
		return snprintf(buf, PAGE_SIZE, "%d\n", cnt);
	return snprintf(buf, PAGE_SIZE, "Unknown\n");
}

1263
/**
1264
 * lpfc_used_rpi_show - Return maximum rpi minus available rpi
1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276
 * @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.
 **/
1277
static ssize_t
1278 1279
lpfc_used_rpi_show(struct device *dev, struct device_attribute *attr,
		   char *buf)
1280
{
1281
	struct Scsi_Host  *shost = class_to_shost(dev);
1282 1283 1284 1285
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	uint32_t cnt, acnt;

J
James Smart 已提交
1286
	if (lpfc_get_hba_info(phba, NULL, NULL, &cnt, &acnt, NULL, NULL))
1287 1288 1289 1290
		return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
	return snprintf(buf, PAGE_SIZE, "Unknown\n");
}

1291
/**
1292
 * lpfc_max_xri_show - Return maximum xri
1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304
 * @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.
 **/
1305
static ssize_t
1306 1307
lpfc_max_xri_show(struct device *dev, struct device_attribute *attr,
		  char *buf)
1308
{
1309
	struct Scsi_Host  *shost = class_to_shost(dev);
1310 1311 1312 1313
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	uint32_t cnt;

J
James Smart 已提交
1314
	if (lpfc_get_hba_info(phba, &cnt, NULL, NULL, NULL, NULL, NULL))
1315 1316 1317 1318
		return snprintf(buf, PAGE_SIZE, "%d\n", cnt);
	return snprintf(buf, PAGE_SIZE, "Unknown\n");
}

1319
/**
1320
 * lpfc_used_xri_show - Return maximum xpi minus the available xpi
1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332
 * @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.
 **/
1333
static ssize_t
1334 1335
lpfc_used_xri_show(struct device *dev, struct device_attribute *attr,
		   char *buf)
1336
{
1337
	struct Scsi_Host  *shost = class_to_shost(dev);
1338 1339 1340 1341
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	uint32_t cnt, acnt;

J
James Smart 已提交
1342 1343 1344 1345 1346
	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");
}

1347
/**
1348
 * lpfc_max_vpi_show - Return maximum vpi
1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360
 * @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.
 **/
J
James Smart 已提交
1361
static ssize_t
1362 1363
lpfc_max_vpi_show(struct device *dev, struct device_attribute *attr,
		  char *buf)
J
James Smart 已提交
1364
{
1365
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
1366 1367 1368 1369 1370 1371 1372 1373 1374
	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");
}

1375
/**
1376
 * lpfc_used_vpi_show - Return maximum vpi minus the available vpi
1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388
 * @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.
 **/
J
James Smart 已提交
1389
static ssize_t
1390 1391
lpfc_used_vpi_show(struct device *dev, struct device_attribute *attr,
		   char *buf)
J
James Smart 已提交
1392
{
1393
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
1394 1395 1396 1397 1398
	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))
1399 1400 1401 1402
		return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
	return snprintf(buf, PAGE_SIZE, "Unknown\n");
}

1403
/**
1404
 * lpfc_npiv_info_show - Return text about NPIV support for the adapter
1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415
 * @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.
 **/
1416
static ssize_t
1417 1418
lpfc_npiv_info_show(struct device *dev, struct device_attribute *attr,
		    char *buf)
1419
{
1420
	struct Scsi_Host  *shost = class_to_shost(dev);
1421 1422 1423 1424 1425 1426 1427 1428 1429 1430
	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);
}

1431
/**
1432
 * lpfc_poll_show - Return text about poll support for the adapter
1433 1434 1435 1436 1437 1438 1439 1440 1441
 * @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.
 **/
1442
static ssize_t
1443 1444
lpfc_poll_show(struct device *dev, struct device_attribute *attr,
	       char *buf)
1445
{
1446
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
1447 1448
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
1449 1450 1451 1452

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

1453
/**
1454
 * lpfc_poll_store - Set the value of cfg_poll for the adapter
1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466
 * @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
 **/
1467
static ssize_t
1468 1469
lpfc_poll_store(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
1470
{
1471
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
1472 1473
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486
	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;

1487 1488 1489
	if (phba->sli_rev == LPFC_SLI_REV4)
		val = 0;

1490 1491 1492 1493
	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
		"3051 lpfc_poll changed from %d to %d\n",
		phba->cfg_poll, val);

J
James Smart 已提交
1494
	spin_lock_irq(&phba->hbalock);
1495 1496 1497 1498 1499 1500

	old_val = phba->cfg_poll;

	if (val & ENABLE_FCP_RING_POLLING) {
		if ((val & DISABLE_FCP_RING_INT) &&
		    !(old_val & DISABLE_FCP_RING_INT)) {
1501 1502 1503 1504
			if (lpfc_readl(phba->HCregaddr, &creg_val)) {
				spin_unlock_irq(&phba->hbalock);
				return -EINVAL;
			}
1505 1506 1507 1508 1509 1510 1511
			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) {
J
James Smart 已提交
1512
		spin_unlock_irq(&phba->hbalock);
1513 1514 1515 1516 1517 1518
		return -EINVAL;
	}

	if (!(val & DISABLE_FCP_RING_INT) &&
	    (old_val & DISABLE_FCP_RING_INT))
	{
J
James Smart 已提交
1519
		spin_unlock_irq(&phba->hbalock);
1520
		del_timer(&phba->fcp_poll_timer);
J
James Smart 已提交
1521
		spin_lock_irq(&phba->hbalock);
1522 1523 1524 1525
		if (lpfc_readl(phba->HCregaddr, &creg_val)) {
			spin_unlock_irq(&phba->hbalock);
			return -EINVAL;
		}
1526 1527 1528 1529 1530 1531 1532
		creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
		writel(creg_val, phba->HCregaddr);
		readl(phba->HCregaddr); /* flush */
	}

	phba->cfg_poll = val;

J
James Smart 已提交
1533
	spin_unlock_irq(&phba->hbalock);
1534 1535 1536

	return strlen(buf);
}
已提交
1537

1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575
/**
 * 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);
}

1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597
/**
 * 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 ");
}

1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617
/**
 * 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;
1618
	uint16_t max_nr_virtfn;
1619

1620 1621
	max_nr_virtfn = lpfc_sli_sriov_nr_virtfn_get(phba);
	return snprintf(buf, PAGE_SIZE, "%d\n", max_nr_virtfn);
1622 1623
}

1624 1625 1626 1627 1628
static inline bool lpfc_rangecheck(uint val, uint min, uint max)
{
	return val >= min && val <= max;
}

1629
/**
1630
 * lpfc_param_show - Return a cfg attribute value in decimal
1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642
 *
 * 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.
 **/
已提交
1643 1644
#define lpfc_param_show(attr)	\
static ssize_t \
1645 1646
lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
		   char *buf) \
已提交
1647
{ \
1648
	struct Scsi_Host  *shost = class_to_shost(dev);\
J
James Smart 已提交
1649 1650
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
	struct lpfc_hba   *phba = vport->phba;\
1651 1652 1653 1654
	return snprintf(buf, PAGE_SIZE, "%d\n",\
			phba->cfg_##attr);\
}

1655
/**
1656
 * lpfc_param_hex_show - Return a cfg attribute value in hex
1657 1658 1659 1660 1661 1662 1663 1664
 *
 * 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.
1665
 * @buf: on return contains the attribute value in hexadecimal.
1666 1667 1668
 *
 * Returns: size of formatted string.
 **/
1669 1670
#define lpfc_param_hex_show(attr)	\
static ssize_t \
1671 1672
lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
		   char *buf) \
1673
{ \
1674
	struct Scsi_Host  *shost = class_to_shost(dev);\
J
James Smart 已提交
1675 1676
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
	struct lpfc_hba   *phba = vport->phba;\
1677
	uint val = 0;\
1678 1679 1680 1681 1682
	val = phba->cfg_##attr;\
	return snprintf(buf, PAGE_SIZE, "%#x\n",\
			phba->cfg_##attr);\
}

1683
/**
1684
 * lpfc_param_init - Initializes a cfg attribute
1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701
 *
 * 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
 **/
1702 1703
#define lpfc_param_init(attr, default, minval, maxval)	\
static int \
1704
lpfc_##attr##_init(struct lpfc_hba *phba, uint val) \
1705
{ \
1706
	if (lpfc_rangecheck(val, minval, maxval)) {\
1707 1708
		phba->cfg_##attr = val;\
		return 0;\
已提交
1709
	}\
1710
	lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
1711 1712
			"0449 lpfc_"#attr" attribute cannot be set to %d, "\
			"allowed range is ["#minval", "#maxval"]\n", val); \
1713 1714
	phba->cfg_##attr = default;\
	return -EINVAL;\
已提交
1715 1716
}

1717
/**
1718
 * lpfc_param_set - Set a cfg attribute value
1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736
 *
 * 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
 **/
1737 1738
#define lpfc_param_set(attr, default, minval, maxval)	\
static int \
1739
lpfc_##attr##_set(struct lpfc_hba *phba, uint val) \
1740
{ \
1741
	if (lpfc_rangecheck(val, minval, maxval)) {\
1742 1743 1744
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
			"3052 lpfc_" #attr " changed from %d to %d\n", \
			phba->cfg_##attr, val); \
1745 1746 1747 1748
		phba->cfg_##attr = val;\
		return 0;\
	}\
	lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
1749 1750
			"0450 lpfc_"#attr" attribute cannot be set to %d, "\
			"allowed range is ["#minval", "#maxval"]\n", val); \
1751 1752 1753
	return -EINVAL;\
}

1754
/**
1755
 * lpfc_param_store - Set a vport attribute value
1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774
 *
 * 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.
 **/
1775
#define lpfc_param_store(attr)	\
已提交
1776
static ssize_t \
1777 1778
lpfc_##attr##_store(struct device *dev, struct device_attribute *attr, \
		    const char *buf, size_t count) \
已提交
1779
{ \
1780
	struct Scsi_Host  *shost = class_to_shost(dev);\
J
James Smart 已提交
1781 1782
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
	struct lpfc_hba   *phba = vport->phba;\
1783
	uint val = 0;\
1784 1785 1786 1787
	if (!isdigit(buf[0]))\
		return -EINVAL;\
	if (sscanf(buf, "%i", &val) != 1)\
		return -EINVAL;\
1788
	if (lpfc_##attr##_set(phba, val) == 0) \
1789
		return strlen(buf);\
1790 1791
	else \
		return -EINVAL;\
已提交
1792 1793
}

1794
/**
1795
 * lpfc_vport_param_show - Return decimal formatted cfg attribute value
1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807
 *
 * 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.
 **/
1808 1809
#define lpfc_vport_param_show(attr)	\
static ssize_t \
1810 1811
lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
		   char *buf) \
1812
{ \
1813
	struct Scsi_Host  *shost = class_to_shost(dev);\
1814 1815 1816 1817
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
	return snprintf(buf, PAGE_SIZE, "%d\n", vport->cfg_##attr);\
}

1818
/**
1819
 * lpfc_vport_param_hex_show - Return hex formatted attribute value
1820 1821 1822 1823 1824 1825
 *
 * Description:
 * Macro that given an attr e.g.
 * hba_queue_depth expands into a function with the name
 * lpfc_hba_queue_depth_show
 *
1826
 * lpfc_##attr##_show: prints the attribute value in hexadecimal.
1827 1828
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
1829
 * @buf: on return contains the attribute value in hexadecimal.
1830 1831 1832
 *
 * Returns: length of formatted string.
 **/
1833 1834
#define lpfc_vport_param_hex_show(attr)	\
static ssize_t \
1835 1836
lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
		   char *buf) \
1837
{ \
1838
	struct Scsi_Host  *shost = class_to_shost(dev);\
1839 1840 1841 1842
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
	return snprintf(buf, PAGE_SIZE, "%#x\n", vport->cfg_##attr);\
}

1843
/**
1844
 * lpfc_vport_param_init - Initialize a vport cfg attribute
1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860
 *
 * 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
 **/
1861 1862
#define lpfc_vport_param_init(attr, default, minval, maxval)	\
static int \
1863
lpfc_##attr##_init(struct lpfc_vport *vport, uint val) \
1864
{ \
1865
	if (lpfc_rangecheck(val, minval, maxval)) {\
1866 1867 1868
		vport->cfg_##attr = val;\
		return 0;\
	}\
1869
	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
1870
			 "0423 lpfc_"#attr" attribute cannot be set to %d, "\
1871
			 "allowed range is ["#minval", "#maxval"]\n", val); \
1872 1873 1874 1875
	vport->cfg_##attr = default;\
	return -EINVAL;\
}

1876
/**
1877
 * lpfc_vport_param_set - Set a vport cfg attribute
1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892
 *
 * 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
 **/
1893 1894
#define lpfc_vport_param_set(attr, default, minval, maxval)	\
static int \
1895
lpfc_##attr##_set(struct lpfc_vport *vport, uint val) \
1896
{ \
1897
	if (lpfc_rangecheck(val, minval, maxval)) {\
1898
		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
1899 1900 1901 1902
			"3053 lpfc_" #attr \
			" changed from %d (x%x) to %d (x%x)\n", \
			vport->cfg_##attr, vport->cfg_##attr, \
			val, val); \
1903 1904 1905
		vport->cfg_##attr = val;\
		return 0;\
	}\
1906
	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
1907
			 "0424 lpfc_"#attr" attribute cannot be set to %d, "\
1908
			 "allowed range is ["#minval", "#maxval"]\n", val); \
1909 1910 1911
	return -EINVAL;\
}

1912
/**
1913
 * lpfc_vport_param_store - Set a vport attribute
1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928
 *
 * 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.
 **/
1929 1930
#define lpfc_vport_param_store(attr)	\
static ssize_t \
1931 1932
lpfc_##attr##_store(struct device *dev, struct device_attribute *attr, \
		    const char *buf, size_t count) \
1933
{ \
1934
	struct Scsi_Host  *shost = class_to_shost(dev);\
1935
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
1936
	uint val = 0;\
1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947
	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;\
}


1948 1949 1950 1951
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);
1952 1953 1954 1955 1956 1957 1958 1959
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);
1960 1961
static DEVICE_ATTR(link_state, S_IRUGO | S_IWUSR, lpfc_link_state_show,
		lpfc_link_state_store);
1962 1963 1964 1965
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);
1966
static DEVICE_ATTR(menlo_mgmt_mode, S_IRUGO, lpfc_mlomgmt_show, NULL);
1967 1968
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);
1969
static DEVICE_ATTR(lpfc_enable_fip, S_IRUGO, lpfc_enable_fip_show, NULL);
1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980
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);
1981 1982
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);
1983
static DEVICE_ATTR(lpfc_dss, S_IRUGO, lpfc_dss_show, NULL);
1984 1985
static DEVICE_ATTR(lpfc_sriov_hw_max_virtfn, S_IRUGO,
		   lpfc_sriov_hw_max_virtfn_show, NULL);
1986
static DEVICE_ATTR(protocol, S_IRUGO, lpfc_sli4_protocol_show, NULL);
1987 1988
static DEVICE_ATTR(lpfc_xlane_supported, S_IRUGO, lpfc_oas_supported_show,
		   NULL);
1989

1990
static char *lpfc_soft_wwn_key = "C99G71SL8032A";
1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
#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--;
2010

2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033
	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;
}
2034
/**
2035
 * lpfc_soft_wwn_enable_store - Allows setting of the wwn if the key is valid
2036 2037 2038 2039 2040 2041 2042 2043 2044
 * @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
 **/
2045
static ssize_t
2046 2047
lpfc_soft_wwn_enable_store(struct device *dev, struct device_attribute *attr,
			   const char *buf, size_t count)
2048
{
2049
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
2050 2051
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070
	unsigned int cnt = count;

	/*
	 * 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.
	 */

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

2071 2072
	if ((cnt != strlen(lpfc_soft_wwn_key)) ||
	    (strncmp(buf, lpfc_soft_wwn_key, strlen(lpfc_soft_wwn_key)) != 0))
2073 2074
		return -EINVAL;

2075
	phba->soft_wwn_enable = 1;
2076 2077
	return count;
}
2078 2079
static DEVICE_ATTR(lpfc_soft_wwn_enable, S_IWUSR, NULL,
		   lpfc_soft_wwn_enable_store);
2080

2081
/**
2082
 * lpfc_soft_wwpn_show - Return the cfg soft ww port name of the adapter
2083 2084
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
2085
 * @buf: on return contains the wwpn in hexadecimal.
2086 2087 2088
 *
 * Returns: size of formatted string.
 **/
2089
static ssize_t
2090 2091
lpfc_soft_wwpn_show(struct device *dev, struct device_attribute *attr,
		    char *buf)
2092
{
2093
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
2094 2095 2096
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

2097 2098
	return snprintf(buf, PAGE_SIZE, "0x%llx\n",
			(unsigned long long)phba->cfg_soft_wwpn);
2099 2100
}

2101
/**
2102
 * lpfc_soft_wwpn_store - Set the ww port name of the adapter
2103 2104
 * @dev class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
2105
 * @buf: contains the wwpn in hexadecimal.
2106 2107 2108 2109 2110 2111 2112 2113
 * @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
 **/
2114
static ssize_t
2115 2116
lpfc_soft_wwpn_store(struct device *dev, struct device_attribute *attr,
		     const char *buf, size_t count)
2117
{
2118
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
2119 2120
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
2121
	struct completion online_compl;
2122 2123 2124
	int stat1 = 0, stat2 = 0;
	unsigned int cnt = count;
	u8 wwpn[WWN_SZ];
2125
	int rc;
2126

2127 2128
	if (!phba->cfg_enable_hba_reset)
		return -EACCES;
2129 2130 2131
	spin_lock_irq(&phba->hbalock);
	if (phba->over_temp_state == HBA_OVER_TEMP) {
		spin_unlock_irq(&phba->hbalock);
2132
		return -EACCES;
2133 2134
	}
	spin_unlock_irq(&phba->hbalock);
2135 2136 2137 2138
	/* count may include a LF at end of string */
	if (buf[cnt-1] == '\n')
		cnt--;

2139
	if (!phba->soft_wwn_enable)
2140 2141
		return -EINVAL;

2142
	/* lock setting wwpn, wwnn down */
2143
	phba->soft_wwn_enable = 0;
2144

2145 2146 2147 2148 2149
	rc = lpfc_wwn_set(buf, cnt, wwpn);
	if (!rc) {
		/* not able to set wwpn, unlock it */
		phba->soft_wwn_enable = 1;
		return rc;
2150
	}
2151

2152
	phba->cfg_soft_wwpn = wwn_to_u64(wwpn);
J
James Smart 已提交
2153
	fc_host_port_name(shost) = phba->cfg_soft_wwpn;
2154
	if (phba->cfg_soft_wwnn)
J
James Smart 已提交
2155
		fc_host_node_name(shost) = phba->cfg_soft_wwnn;
2156 2157 2158 2159

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

2160
	stat1 = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
2161 2162
	if (stat1)
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2163 2164
				"0463 lpfc_soft_wwpn attribute set failed to "
				"reinit adapter - %d\n", stat1);
2165
	init_completion(&online_compl);
2166 2167 2168 2169 2170
	rc = lpfc_workq_post_event(phba, &stat2, &online_compl,
				   LPFC_EVT_ONLINE);
	if (rc == 0)
		return -ENOMEM;

2171 2172 2173
	wait_for_completion(&online_compl);
	if (stat2)
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2174 2175
				"0464 lpfc_soft_wwpn attribute set failed to "
				"reinit adapter - %d\n", stat2);
2176 2177
	return (stat1 || stat2) ? -EIO : count;
}
2178
static DEVICE_ATTR(lpfc_soft_wwpn, S_IRUGO | S_IWUSR,
2179
		   lpfc_soft_wwpn_show, lpfc_soft_wwpn_store);
2180

2181
/**
2182
 * lpfc_soft_wwnn_show - Return the cfg soft ww node name for the adapter
2183 2184
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
2185
 * @buf: on return contains the wwnn in hexadecimal.
2186 2187 2188
 *
 * Returns: size of formatted string.
 **/
2189
static ssize_t
2190 2191
lpfc_soft_wwnn_show(struct device *dev, struct device_attribute *attr,
		    char *buf)
2192
{
2193
	struct Scsi_Host *shost = class_to_shost(dev);
2194
	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2195 2196 2197 2198
	return snprintf(buf, PAGE_SIZE, "0x%llx\n",
			(unsigned long long)phba->cfg_soft_wwnn);
}

2199
/**
2200
 * lpfc_soft_wwnn_store - sets the ww node name of the adapter
2201
 * @cdev: class device that is converted into a Scsi_host.
2202
 * @buf: contains the ww node name in hexadecimal.
2203 2204 2205 2206 2207 2208
 * @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
 **/
2209
static ssize_t
2210 2211
lpfc_soft_wwnn_store(struct device *dev, struct device_attribute *attr,
		     const char *buf, size_t count)
2212
{
2213
	struct Scsi_Host *shost = class_to_shost(dev);
2214
	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2215 2216 2217
	unsigned int cnt = count;
	u8 wwnn[WWN_SZ];
	int rc;
2218 2219 2220 2221 2222

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

2223
	if (!phba->soft_wwn_enable)
2224 2225
		return -EINVAL;

2226 2227 2228 2229 2230 2231
	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;
2232
	}
2233

2234 2235 2236 2237 2238 2239 2240 2241
	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;
}
2242
static DEVICE_ATTR(lpfc_soft_wwnn, S_IRUGO | S_IWUSR,
2243
		   lpfc_soft_wwnn_show, lpfc_soft_wwnn_store);
2244

2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288
/**
 * 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;

2289
	if (!phba->cfg_fof)
2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312
		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);

2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375
/**
 * 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);

2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419
/**
 * 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;

2420
	if (!phba->cfg_fof)
2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437
		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;
2438
	phba->cfg_oas_priority = phba->cfg_XLanePriority;
2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487
	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;

2488
	if (!phba->cfg_fof)
2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547
		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[],
2548 2549
		       uint8_t tgt_wwpn[], uint64_t lun,
		       uint32_t oas_state, uint8_t pri)
2550 2551 2552 2553
{

	int rc = 0;

2554
	if (!phba->cfg_fof)
2555 2556 2557 2558
		return -EPERM;

	if (oas_state) {
		if (!lpfc_enable_oas_lun(phba, (struct lpfc_name *)vpt_wwpn,
2559 2560
					 (struct lpfc_name *)tgt_wwpn,
					 lun, pri))
2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625
			rc = -ENOMEM;
	} else {
		lpfc_disable_oas_lun(phba, (struct lpfc_name *)vpt_wwpn,
				     (struct lpfc_name *)tgt_wwpn, lun);
	}
	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)
{
	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))
		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,
2626
			  uint32_t oas_state, uint8_t pri)
2627 2628 2629 2630 2631
{

	int rc;

	rc = lpfc_oas_lun_state_set(phba, vpt_wwpn, tgt_wwpn, lun,
2632
				    oas_state, pri);
2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659
	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;

2660
	if (!phba->cfg_fof)
2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705
		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);
	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;
	ssize_t rc;

2706
	if (!phba->cfg_fof)
2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721
		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;

	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2722 2723
			"3372 Try to set vport 0x%llx target 0x%llx lun:0x%llx "
			"priority 0x%x with oas state %d\n",
2724 2725
			wwn_to_u64(phba->cfg_oas_vpt_wwpn),
			wwn_to_u64(phba->cfg_oas_tgt_wwpn), scsi_lun,
2726
			phba->cfg_oas_priority, phba->cfg_oas_lun_state);
2727 2728

	rc = lpfc_oas_lun_state_change(phba, phba->cfg_oas_vpt_wwpn,
2729 2730 2731
				       phba->cfg_oas_tgt_wwpn, scsi_lun,
				       phba->cfg_oas_lun_state,
				       phba->cfg_oas_priority);
2732 2733 2734 2735 2736 2737 2738
	if (rc)
		return rc;

	return count;
}
static DEVICE_ATTR(lpfc_xlane_lun, S_IRUGO | S_IWUSR,
		   lpfc_oas_lun_show, lpfc_oas_lun_store);
2739

2740
static int lpfc_poll = 0;
2741
module_param(lpfc_poll, int, S_IRUGO);
2742 2743 2744 2745 2746
MODULE_PARM_DESC(lpfc_poll, "FCP ring polling mode control:"
		 " 0 - none,"
		 " 1 - poll with interrupts enabled"
		 " 3 - poll and disable FCP ring interrupts");

2747 2748
static DEVICE_ATTR(lpfc_poll, S_IRUGO | S_IWUSR,
		   lpfc_poll_show, lpfc_poll_store);
已提交
2749

2750 2751 2752 2753 2754
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");
2755

2756 2757
LPFC_ATTR_R(enable_npiv, 1, 0, 1,
	"Enable NPIV functionality");
2758

2759 2760 2761
LPFC_ATTR_R(fcf_failover_policy, 1, 1, 2,
	"FCF Fast failover=1 Priority failover=2");

2762 2763 2764 2765 2766 2767
/*
# 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.
*/
2768 2769
LPFC_ATTR_R(enable_rrq, 2, 0, 2,
	"Enable RRQ functionality");
2770

2771 2772 2773 2774 2775 2776 2777
/*
# lpfc_suppress_link_up:  Bring link up at initialization
#            0x0  = bring link up (issue MBX_INIT_LINK)
#            0x1  = do NOT bring link up at initialization(MBX_INIT_LINK)
#            0x2  = never bring up link
# Default value is 0.
*/
2778 2779 2780
LPFC_ATTR_R(suppress_link_up, LPFC_INITIALIZE_LINK, LPFC_INITIALIZE_LINK,
		LPFC_DELAY_INIT_LINK_INDEFINITELY,
		"Suppress Link Up at initialization");
2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825
/*
# lpfc_cnt: Number of IOCBs allocated for ELS, CT, and ABTS
#       1 - (1024)
#       2 - (2048)
#       3 - (3072)
#       4 - (4096)
#       5 - (5120)
*/
static ssize_t
lpfc_iocb_hw_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->iocb_max);
}

static DEVICE_ATTR(iocb_hw, S_IRUGO,
			 lpfc_iocb_hw_show, NULL);
static ssize_t
lpfc_txq_hw_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->sli.ring[LPFC_ELS_RING].txq_max);
}

static DEVICE_ATTR(txq_hw, S_IRUGO,
			 lpfc_txq_hw_show, NULL);
static ssize_t
lpfc_txcmplq_hw_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->sli.ring[LPFC_ELS_RING].txcmplq_max);
}

static DEVICE_ATTR(txcmplq_hw, S_IRUGO,
			 lpfc_txcmplq_hw_show, NULL);

2826
LPFC_ATTR_R(iocb_cnt, 2, 1, 5,
2827
	"Number of IOCBs alloc for ELS, CT, and ABTS: 1k to 5k IOCBs");
2828

2829 2830 2831 2832 2833 2834 2835 2836 2837 2838
/*
# lpfc_nodev_tmo: If set, it will hold all I/O errors on devices that disappear
# until the timer expires. Value range is [0,255]. Default value is 30.
*/
static int lpfc_nodev_tmo = LPFC_DEF_DEVLOSS_TMO;
static int lpfc_devloss_tmo = LPFC_DEF_DEVLOSS_TMO;
module_param(lpfc_nodev_tmo, int, 0);
MODULE_PARM_DESC(lpfc_nodev_tmo,
		 "Seconds driver will hold I/O waiting "
		 "for a device to come back");
2839 2840

/**
2841
 * lpfc_nodev_tmo_show - Return the hba dev loss timeout value
2842 2843 2844 2845 2846 2847
 * @dev: class converted to a Scsi_host structure.
 * @attr: device attribute, not used.
 * @buf: on return contains the dev loss timeout in decimal.
 *
 * Returns: size of formatted string.
 **/
2848
static ssize_t
2849 2850
lpfc_nodev_tmo_show(struct device *dev, struct device_attribute *attr,
		    char *buf)
2851
{
2852
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
2853
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2854

2855
	return snprintf(buf, PAGE_SIZE, "%d\n",	vport->cfg_devloss_tmo);
2856 2857
}

2858
/**
2859
 * lpfc_nodev_tmo_init - Set the hba nodev timeout value
2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872
 * @vport: lpfc vport structure pointer.
 * @val: contains the nodev timeout value.
 *
 * Description:
 * If the devloss tmo is already set then nodev tmo is set to devloss tmo,
 * a kernel error message is printed and zero is returned.
 * Else if val is in range then nodev tmo and devloss tmo are set to val.
 * Otherwise nodev tmo is set to the default value.
 *
 * Returns:
 * zero if already set or if val is in range
 * -EINVAL val out of range
 **/
2873
static int
2874 2875 2876 2877 2878
lpfc_nodev_tmo_init(struct lpfc_vport *vport, int val)
{
	if (vport->cfg_devloss_tmo != LPFC_DEF_DEVLOSS_TMO) {
		vport->cfg_nodev_tmo = vport->cfg_devloss_tmo;
		if (val != LPFC_DEF_DEVLOSS_TMO)
2879
			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2880 2881 2882
					 "0407 Ignoring lpfc_nodev_tmo module "
					 "parameter because lpfc_devloss_tmo "
					 "is set.\n");
2883 2884 2885 2886
		return 0;
	}

	if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
2887 2888
		vport->cfg_nodev_tmo = val;
		vport->cfg_devloss_tmo = val;
2889 2890
		return 0;
	}
2891 2892 2893 2894
	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
			 "0400 lpfc_nodev_tmo attribute cannot be set to"
			 " %d, allowed range is [%d, %d]\n",
			 val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO);
2895
	vport->cfg_nodev_tmo = LPFC_DEF_DEVLOSS_TMO;
2896 2897 2898
	return -EINVAL;
}

2899
/**
2900
 * lpfc_update_rport_devloss_tmo - Update dev loss tmo value
2901 2902 2903 2904 2905
 * @vport: lpfc vport structure pointer.
 *
 * Description:
 * Update all the ndlp's dev loss tmo with the vport devloss tmo value.
 **/
2906
static void
2907
lpfc_update_rport_devloss_tmo(struct lpfc_vport *vport)
2908
{
J
James Smart 已提交
2909
	struct Scsi_Host  *shost;
2910 2911
	struct lpfc_nodelist  *ndlp;

2912 2913 2914
	shost = lpfc_shost_from_vport(vport);
	spin_lock_irq(shost->host_lock);
	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp)
2915
		if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport)
2916 2917
			ndlp->rport->dev_loss_tmo = vport->cfg_devloss_tmo;
	spin_unlock_irq(shost->host_lock);
2918 2919
}

2920
/**
2921
 * lpfc_nodev_tmo_set - Set the vport nodev tmo and devloss tmo values
2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934
 * @vport: lpfc vport structure pointer.
 * @val: contains the tmo value.
 *
 * Description:
 * If the devloss tmo is already set or the vport dev loss tmo has changed
 * then a kernel error message is printed and zero is returned.
 * Else if val is in range then nodev tmo and devloss tmo are set to val.
 * Otherwise nodev tmo is set to the default value.
 *
 * Returns:
 * zero if already set or if val is in range
 * -EINVAL val out of range
 **/
2935
static int
2936
lpfc_nodev_tmo_set(struct lpfc_vport *vport, int val)
2937
{
2938 2939
	if (vport->dev_loss_tmo_changed ||
	    (lpfc_devloss_tmo != LPFC_DEF_DEVLOSS_TMO)) {
2940
		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2941 2942
				 "0401 Ignoring change to lpfc_nodev_tmo "
				 "because lpfc_devloss_tmo is set.\n");
2943 2944 2945
		return 0;
	}
	if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
2946 2947
		vport->cfg_nodev_tmo = val;
		vport->cfg_devloss_tmo = val;
2948 2949 2950 2951 2952
		/*
		 * For compat: set the fc_host dev loss so new rports
		 * will get the value.
		 */
		fc_host_dev_loss_tmo(lpfc_shost_from_vport(vport)) = val;
2953
		lpfc_update_rport_devloss_tmo(vport);
2954 2955
		return 0;
	}
2956
	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2957
			 "0403 lpfc_nodev_tmo attribute cannot be set to "
2958 2959
			 "%d, allowed range is [%d, %d]\n",
			 val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO);
2960 2961 2962
	return -EINVAL;
}

2963
lpfc_vport_param_store(nodev_tmo)
2964

2965 2966
static DEVICE_ATTR(lpfc_nodev_tmo, S_IRUGO | S_IWUSR,
		   lpfc_nodev_tmo_show, lpfc_nodev_tmo_store);
2967 2968 2969 2970 2971 2972

/*
# lpfc_devloss_tmo: If set, it will hold all I/O errors on devices that
# disappear until the timer expires. Value range is [0,255]. Default
# value is 30.
*/
2973
module_param(lpfc_devloss_tmo, int, S_IRUGO);
2974 2975 2976
MODULE_PARM_DESC(lpfc_devloss_tmo,
		 "Seconds driver will hold I/O waiting "
		 "for a device to come back");
2977 2978 2979
lpfc_vport_param_init(devloss_tmo, LPFC_DEF_DEVLOSS_TMO,
		      LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO)
lpfc_vport_param_show(devloss_tmo)
2980 2981

/**
2982
 * lpfc_devloss_tmo_set - Sets vport nodev tmo, devloss tmo values, changed bit
2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994
 * @vport: lpfc vport structure pointer.
 * @val: contains the tmo value.
 *
 * Description:
 * If val is in a valid range then set the vport nodev tmo,
 * devloss tmo, also set the vport dev loss tmo changed flag.
 * Else a kernel error message is printed.
 *
 * Returns:
 * zero if val is in range
 * -EINVAL val out of range
 **/
2995
static int
2996
lpfc_devloss_tmo_set(struct lpfc_vport *vport, int val)
2997 2998
{
	if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
2999 3000 3001
		vport->cfg_nodev_tmo = val;
		vport->cfg_devloss_tmo = val;
		vport->dev_loss_tmo_changed = 1;
3002
		fc_host_dev_loss_tmo(lpfc_shost_from_vport(vport)) = val;
3003
		lpfc_update_rport_devloss_tmo(vport);
3004 3005 3006
		return 0;
	}

3007
	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3008 3009
			 "0404 lpfc_devloss_tmo attribute cannot be set to "
			 "%d, allowed range is [%d, %d]\n",
3010
			 val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO);
3011 3012 3013
	return -EINVAL;
}

3014
lpfc_vport_param_store(devloss_tmo)
3015 3016
static DEVICE_ATTR(lpfc_devloss_tmo, S_IRUGO | S_IWUSR,
		   lpfc_devloss_tmo_show, lpfc_devloss_tmo_store);
3017

已提交
3018 3019 3020 3021
/*
# lpfc_log_verbose: Only turn this flag on if you are willing to risk being
# deluged with LOTS of information.
# You can set a bit mask to record specific types of verbose messages:
3022
# See lpfc_logmsh.h for definitions.
已提交
3023
*/
3024
LPFC_VPORT_ATTR_HEX_RW(log_verbose, 0x0, 0x0, 0xffffffff,
3025
		       "Verbose logging bit-mask");
已提交
3026

J
James Smart 已提交
3027 3028 3029 3030
/*
# lpfc_enable_da_id: This turns on the DA_ID CT command that deregisters
# objects that have been registered with the nameserver after login.
*/
3031
LPFC_VPORT_ATTR_R(enable_da_id, 1, 0, 1,
J
James Smart 已提交
3032 3033
		  "Deregister nameserver objects before LOGO");

已提交
3034 3035
/*
# lun_queue_depth:  This parameter is used to limit the number of outstanding
3036 3037 3038 3039
# commands per FCP LUN. Value range is [1,512]. Default value is 30.
# If this parameter value is greater than 1/8th the maximum number of exchanges
# supported by the HBA port, then the lun queue depth will be reduced to
# 1/8th the maximum number of exchanges.
已提交
3040
*/
3041
LPFC_VPORT_ATTR_R(lun_queue_depth, 30, 1, 512,
3042
		  "Max number of FCP commands we can queue to a specific LUN");
已提交
3043

3044 3045 3046 3047 3048
/*
# tgt_queue_depth:  This parameter is used to limit the number of outstanding
# commands per target port. Value range is [10,65535]. Default value is 65535.
*/
LPFC_VPORT_ATTR_R(tgt_queue_depth, 65535, 10, 65535,
3049
		  "Max number of FCP commands we can queue to a specific target port");
3050

3051 3052 3053 3054 3055 3056 3057 3058 3059 3060
/*
# hba_queue_depth:  This parameter is used to limit the number of outstanding
# commands per lpfc HBA. Value range is [32,8192]. If this parameter
# value is greater than the maximum number of exchanges supported by the HBA,
# then maximum number of exchanges supported by the HBA is used to determine
# the hba_queue_depth.
*/
LPFC_ATTR_R(hba_queue_depth, 8192, 32, 8192,
	    "Max number of FCP commands we can queue to a lpfc HBA");

3061 3062 3063 3064 3065 3066 3067 3068 3069
/*
# peer_port_login:  This parameter allows/prevents logins
# between peer ports hosted on the same physical port.
# When this parameter is set 0 peer ports of same physical port
# are not allowed to login to each other.
# When this parameter is set 1 peer ports of same physical port
# are allowed to login to each other.
# Default value of this parameter is 0.
*/
3070 3071 3072
LPFC_VPORT_ATTR_R(peer_port_login, 0, 0, 1,
		  "Allow peer ports on the same physical port to login to each "
		  "other.");
3073 3074

/*
3075
# restrict_login:  This parameter allows/prevents logins
3076 3077 3078 3079 3080 3081 3082 3083 3084
# between Virtual Ports and remote initiators.
# When this parameter is not set (0) Virtual Ports will accept PLOGIs from
# other initiators and will attempt to PLOGI all remote ports.
# When this parameter is set (1) Virtual Ports will reject PLOGIs from
# remote ports and will not attempt to PLOGI to other initiators.
# This parameter does not restrict to the physical port.
# This parameter does not restrict logins to Fabric resident remote ports.
# Default value of this parameter is 1.
*/
3085
static int lpfc_restrict_login = 1;
3086
module_param(lpfc_restrict_login, int, S_IRUGO);
3087 3088 3089 3090
MODULE_PARM_DESC(lpfc_restrict_login,
		 "Restrict virtual ports login to remote initiators.");
lpfc_vport_param_show(restrict_login);

3091
/**
3092
 * lpfc_restrict_login_init - Set the vport restrict login flag
3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105
 * @vport: lpfc vport structure pointer.
 * @val: contains the restrict login value.
 *
 * Description:
 * If val is not in a valid range then log a kernel error message and set
 * the vport restrict login to one.
 * If the port type is physical clear the restrict login flag and return.
 * Else set the restrict login flag to val.
 *
 * Returns:
 * zero if val is in range
 * -EINVAL val out of range
 **/
3106 3107 3108 3109
static int
lpfc_restrict_login_init(struct lpfc_vport *vport, int val)
{
	if (val < 0 || val > 1) {
3110
		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3111
				 "0422 lpfc_restrict_login attribute cannot "
3112 3113
				 "be set to %d, allowed range is [0, 1]\n",
				 val);
3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124
		vport->cfg_restrict_login = 1;
		return -EINVAL;
	}
	if (vport->port_type == LPFC_PHYSICAL_PORT) {
		vport->cfg_restrict_login = 0;
		return 0;
	}
	vport->cfg_restrict_login = val;
	return 0;
}

3125
/**
3126
 * lpfc_restrict_login_set - Set the vport restrict login flag
3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140
 * @vport: lpfc vport structure pointer.
 * @val: contains the restrict login value.
 *
 * Description:
 * If val is not in a valid range then log a kernel error message and set
 * the vport restrict login to one.
 * If the port type is physical and the val is not zero log a kernel
 * error message, clear the restrict login flag and return zero.
 * Else set the restrict login flag to val.
 *
 * Returns:
 * zero if val is in range
 * -EINVAL val out of range
 **/
3141 3142 3143 3144
static int
lpfc_restrict_login_set(struct lpfc_vport *vport, int val)
{
	if (val < 0 || val > 1) {
3145
		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3146
				 "0425 lpfc_restrict_login attribute cannot "
3147 3148
				 "be set to %d, allowed range is [0, 1]\n",
				 val);
3149 3150 3151 3152
		vport->cfg_restrict_login = 1;
		return -EINVAL;
	}
	if (vport->port_type == LPFC_PHYSICAL_PORT && val != 0) {
3153 3154 3155
		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
				 "0468 lpfc_restrict_login must be 0 for "
				 "Physical ports.\n");
3156 3157 3158 3159 3160 3161 3162
		vport->cfg_restrict_login = 0;
		return 0;
	}
	vport->cfg_restrict_login = val;
	return 0;
}
lpfc_vport_param_store(restrict_login);
3163 3164
static DEVICE_ATTR(lpfc_restrict_login, S_IRUGO | S_IWUSR,
		   lpfc_restrict_login_show, lpfc_restrict_login_store);
3165

已提交
3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182
/*
# Some disk devices have a "select ID" or "select Target" capability.
# From a protocol standpoint "select ID" usually means select the
# Fibre channel "ALPA".  In the FC-AL Profile there is an "informative
# annex" which contains a table that maps a "select ID" (a number
# between 0 and 7F) to an ALPA.  By default, for compatibility with
# older drivers, the lpfc driver scans this table from low ALPA to high
# ALPA.
#
# Turning on the scan-down variable (on  = 1, off = 0) will
# cause the lpfc driver to use an inverted table, effectively
# scanning ALPAs from high to low. Value range is [0,1]. Default value is 1.
#
# (Note: This "select ID" functionality is a LOOP ONLY characteristic
# and will not work across a fabric. Also this parameter will take
# effect only in the case when ALPA map is not available.)
*/
3183 3184
LPFC_VPORT_ATTR_R(scan_down, 1, 0, 1,
		  "Start scanning for devices from highest ALPA to lowest");
已提交
3185 3186 3187 3188

/*
# lpfc_topology:  link topology for init link
#            0x0  = attempt loop mode then point-to-point
3189
#            0x01 = internal loopback mode
已提交
3190 3191 3192 3193 3194 3195 3196
#            0x02 = attempt point-to-point mode only
#            0x04 = attempt loop mode only
#            0x06 = attempt point-to-point mode then loop
# Set point-to-point mode if you want to run as an N_Port.
# Set loop mode if you want to run as an NL_Port. Value range is [0,0x6].
# Default value is 0.
*/
3197 3198
LPFC_ATTR(topology, 0, 0, 6,
	"Select Fibre Channel topology");
3199 3200

/**
3201
 * lpfc_topology_set - Set the adapters topology field
3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215
 * @phba: lpfc_hba pointer.
 * @val: topology value.
 *
 * Description:
 * If val is in a valid range then set the adapter's topology field and
 * issue a lip; if the lip fails reset the topology to the old value.
 *
 * If the value is not in range log a kernel error message and return an error.
 *
 * Returns:
 * zero if val is in range and lip okay
 * non-zero return value from lpfc_issue_lip()
 * -EINVAL val out of range
 **/
3216 3217 3218
static ssize_t
lpfc_topology_store(struct device *dev, struct device_attribute *attr,
			const char *buf, size_t count)
3219
{
3220 3221 3222 3223 3224 3225
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	int val = 0;
	int nolip = 0;
	const char *val_buf = buf;
3226 3227
	int err;
	uint32_t prev_val;
3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238

	if (!strncmp(buf, "nolip ", strlen("nolip "))) {
		nolip = 1;
		val_buf = &buf[strlen("nolip ")];
	}

	if (!isdigit(val_buf[0]))
		return -EINVAL;
	if (sscanf(val_buf, "%i", &val) != 1)
		return -EINVAL;

3239 3240
	if (val >= 0 && val <= 6) {
		prev_val = phba->cfg_topology;
3241 3242 3243 3244
		if (phba->cfg_link_speed == LPFC_USER_LINK_SPEED_16G &&
			val == 4) {
			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
				"3113 Loop mode not supported at speed %d\n",
3245
				val);
3246 3247
			return -EINVAL;
		}
3248 3249 3250 3251 3252 3253 3254
		if (phba->pcidev->device == PCI_DEVICE_ID_LANCER_G6_FC &&
			val == 4) {
			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
				"3114 Loop mode not supported\n");
			return -EINVAL;
		}
		phba->cfg_topology = val;
3255 3256 3257
		if (nolip)
			return strlen(buf);

3258 3259 3260
		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
			"3054 lpfc_topology changed from %d to %d\n",
			prev_val, val);
3261 3262
		if (prev_val != val && phba->sli_rev == LPFC_SLI_REV4)
			phba->fc_topology_changed = 1;
3263
		err = lpfc_issue_lip(lpfc_shost_from_vport(phba->pport));
3264
		if (err) {
3265
			phba->cfg_topology = prev_val;
3266 3267 3268
			return -EINVAL;
		} else
			return strlen(buf);
3269 3270 3271 3272 3273 3274 3275
	}
	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
		"%d:0467 lpfc_topology attribute cannot be set to %d, "
		"allowed range is [0, 6]\n",
		phba->brd_no, val);
	return -EINVAL;
}
3276

3277
lpfc_param_show(topology)
3278
static DEVICE_ATTR(lpfc_topology, S_IRUGO | S_IWUSR,
3279
		lpfc_topology_show, lpfc_topology_store);
已提交
3280

3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310
/**
 * lpfc_static_vport_show: Read callback function for
 *   lpfc_static_vport sysfs file.
 * @dev: Pointer to class device object.
 * @attr: device attribute structure.
 * @buf: Data buffer.
 *
 * This function is the read call back function for
 * lpfc_static_vport sysfs file. The lpfc_static_vport
 * sysfs file report the mageability of the vport.
 **/
static ssize_t
lpfc_static_vport_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;
	if (vport->vport_flag & STATIC_VPORT)
		sprintf(buf, "1\n");
	else
		sprintf(buf, "0\n");

	return strlen(buf);
}

/*
 * Sysfs attribute to control the statistical data collection.
 */
static DEVICE_ATTR(lpfc_static_vport, S_IRUGO,
		   lpfc_static_vport_show, NULL);
3311 3312

/**
3313
 * lpfc_stat_data_ctrl_store - write call back for lpfc_stat_data_ctrl sysfs file
3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347
 * @dev: Pointer to class device.
 * @buf: Data buffer.
 * @count: Size of the data buffer.
 *
 * This function get called when an user write to the lpfc_stat_data_ctrl
 * sysfs file. This function parse the command written to the sysfs file
 * and take appropriate action. These commands are used for controlling
 * driver statistical data collection.
 * Following are the command this function handles.
 *
 *    setbucket <bucket_type> <base> <step>
 *			       = Set the latency buckets.
 *    destroybucket            = destroy all the buckets.
 *    start                    = start data collection
 *    stop                     = stop data collection
 *    reset                    = reset the collected data
 **/
static ssize_t
lpfc_stat_data_ctrl_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;
#define LPFC_MAX_DATA_CTRL_LEN 1024
	static char bucket_data[LPFC_MAX_DATA_CTRL_LEN];
	unsigned long i;
	char *str_ptr, *token;
	struct lpfc_vport **vports;
	struct Scsi_Host *v_shost;
	char *bucket_type_str, *base_str, *step_str;
	unsigned long base, step, bucket_type;

	if (!strncmp(buf, "setbucket", strlen("setbucket"))) {
3348
		if (strlen(buf) > (LPFC_MAX_DATA_CTRL_LEN - 1))
3349 3350
			return -EINVAL;

3351
		strncpy(bucket_data, buf, LPFC_MAX_DATA_CTRL_LEN);
3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385
		str_ptr = &bucket_data[0];
		/* Ignore this token - this is command token */
		token = strsep(&str_ptr, "\t ");
		if (!token)
			return -EINVAL;

		bucket_type_str = strsep(&str_ptr, "\t ");
		if (!bucket_type_str)
			return -EINVAL;

		if (!strncmp(bucket_type_str, "linear", strlen("linear")))
			bucket_type = LPFC_LINEAR_BUCKET;
		else if (!strncmp(bucket_type_str, "power2", strlen("power2")))
			bucket_type = LPFC_POWER2_BUCKET;
		else
			return -EINVAL;

		base_str = strsep(&str_ptr, "\t ");
		if (!base_str)
			return -EINVAL;
		base = simple_strtoul(base_str, NULL, 0);

		step_str = strsep(&str_ptr, "\t ");
		if (!step_str)
			return -EINVAL;
		step = simple_strtoul(step_str, NULL, 0);
		if (!step)
			return -EINVAL;

		/* Block the data collection for every vport */
		vports = lpfc_create_vport_work_array(phba);
		if (vports == NULL)
			return -ENOMEM;

3386
		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400
			v_shost = lpfc_shost_from_vport(vports[i]);
			spin_lock_irq(v_shost->host_lock);
			/* Block and reset data collection */
			vports[i]->stat_data_blocked = 1;
			if (vports[i]->stat_data_enabled)
				lpfc_vport_reset_stat_data(vports[i]);
			spin_unlock_irq(v_shost->host_lock);
		}

		/* Set the bucket attributes */
		phba->bucket_type = bucket_type;
		phba->bucket_base = base;
		phba->bucket_step = step;

3401
		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417
			v_shost = lpfc_shost_from_vport(vports[i]);

			/* Unblock data collection */
			spin_lock_irq(v_shost->host_lock);
			vports[i]->stat_data_blocked = 0;
			spin_unlock_irq(v_shost->host_lock);
		}
		lpfc_destroy_vport_work_array(phba, vports);
		return strlen(buf);
	}

	if (!strncmp(buf, "destroybucket", strlen("destroybucket"))) {
		vports = lpfc_create_vport_work_array(phba);
		if (vports == NULL)
			return -ENOMEM;

3418
		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476
			v_shost = lpfc_shost_from_vport(vports[i]);
			spin_lock_irq(shost->host_lock);
			vports[i]->stat_data_blocked = 1;
			lpfc_free_bucket(vport);
			vport->stat_data_enabled = 0;
			vports[i]->stat_data_blocked = 0;
			spin_unlock_irq(shost->host_lock);
		}
		lpfc_destroy_vport_work_array(phba, vports);
		phba->bucket_type = LPFC_NO_BUCKET;
		phba->bucket_base = 0;
		phba->bucket_step = 0;
		return strlen(buf);
	}

	if (!strncmp(buf, "start", strlen("start"))) {
		/* If no buckets configured return error */
		if (phba->bucket_type == LPFC_NO_BUCKET)
			return -EINVAL;
		spin_lock_irq(shost->host_lock);
		if (vport->stat_data_enabled) {
			spin_unlock_irq(shost->host_lock);
			return strlen(buf);
		}
		lpfc_alloc_bucket(vport);
		vport->stat_data_enabled = 1;
		spin_unlock_irq(shost->host_lock);
		return strlen(buf);
	}

	if (!strncmp(buf, "stop", strlen("stop"))) {
		spin_lock_irq(shost->host_lock);
		if (vport->stat_data_enabled == 0) {
			spin_unlock_irq(shost->host_lock);
			return strlen(buf);
		}
		lpfc_free_bucket(vport);
		vport->stat_data_enabled = 0;
		spin_unlock_irq(shost->host_lock);
		return strlen(buf);
	}

	if (!strncmp(buf, "reset", strlen("reset"))) {
		if ((phba->bucket_type == LPFC_NO_BUCKET)
			|| !vport->stat_data_enabled)
			return strlen(buf);
		spin_lock_irq(shost->host_lock);
		vport->stat_data_blocked = 1;
		lpfc_vport_reset_stat_data(vport);
		vport->stat_data_blocked = 0;
		spin_unlock_irq(shost->host_lock);
		return strlen(buf);
	}
	return -EINVAL;
}


/**
3477
 * lpfc_stat_data_ctrl_show - Read function for lpfc_stat_data_ctrl sysfs file
3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553
 * @dev: Pointer to class device object.
 * @buf: Data buffer.
 *
 * This function is the read call back function for
 * lpfc_stat_data_ctrl sysfs file. This function report the
 * current statistical data collection state.
 **/
static ssize_t
lpfc_stat_data_ctrl_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 index = 0;
	int i;
	char *bucket_type;
	unsigned long bucket_value;

	switch (phba->bucket_type) {
	case LPFC_LINEAR_BUCKET:
		bucket_type = "linear";
		break;
	case LPFC_POWER2_BUCKET:
		bucket_type = "power2";
		break;
	default:
		bucket_type = "No Bucket";
		break;
	}

	sprintf(&buf[index], "Statistical Data enabled :%d, "
		"blocked :%d, Bucket type :%s, Bucket base :%d,"
		" Bucket step :%d\nLatency Ranges :",
		vport->stat_data_enabled, vport->stat_data_blocked,
		bucket_type, phba->bucket_base, phba->bucket_step);
	index = strlen(buf);
	if (phba->bucket_type != LPFC_NO_BUCKET) {
		for (i = 0; i < LPFC_MAX_BUCKET_COUNT; i++) {
			if (phba->bucket_type == LPFC_LINEAR_BUCKET)
				bucket_value = phba->bucket_base +
					phba->bucket_step * i;
			else
				bucket_value = phba->bucket_base +
				(1 << i) * phba->bucket_step;

			if (index + 10 > PAGE_SIZE)
				break;
			sprintf(&buf[index], "%08ld ", bucket_value);
			index = strlen(buf);
		}
	}
	sprintf(&buf[index], "\n");
	return strlen(buf);
}

/*
 * Sysfs attribute to control the statistical data collection.
 */
static DEVICE_ATTR(lpfc_stat_data_ctrl, S_IRUGO | S_IWUSR,
		   lpfc_stat_data_ctrl_show, lpfc_stat_data_ctrl_store);

/*
 * lpfc_drvr_stat_data: sysfs attr to get driver statistical data.
 */

/*
 * Each Bucket takes 11 characters and 1 new line + 17 bytes WWN
 * for each target.
 */
#define STAT_DATA_SIZE_PER_TARGET(NUM_BUCKETS) ((NUM_BUCKETS) * 11 + 18)
#define MAX_STAT_DATA_SIZE_PER_TARGET \
	STAT_DATA_SIZE_PER_TARGET(LPFC_MAX_BUCKET_COUNT)


/**
3554
 * sysfs_drvr_stat_data_read - Read function for lpfc_drvr_stat_data attribute
3555
 * @filp: sysfs file
3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566
 * @kobj: Pointer to the kernel object
 * @bin_attr: Attribute object
 * @buff: Buffer pointer
 * @off: File offset
 * @count: Buffer size
 *
 * This function is the read call back function for lpfc_drvr_stat_data
 * sysfs file. This function export the statistical data to user
 * applications.
 **/
static ssize_t
3567 3568
sysfs_drvr_stat_data_read(struct file *filp, struct kobject *kobj,
		struct bin_attribute *bin_attr,
3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637
		char *buf, loff_t off, size_t count)
{
	struct device *dev = container_of(kobj, struct device,
		kobj);
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	int i = 0, index = 0;
	unsigned long nport_index;
	struct lpfc_nodelist *ndlp = NULL;
	nport_index = (unsigned long)off /
		MAX_STAT_DATA_SIZE_PER_TARGET;

	if (!vport->stat_data_enabled || vport->stat_data_blocked
		|| (phba->bucket_type == LPFC_NO_BUCKET))
		return 0;

	spin_lock_irq(shost->host_lock);
	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
		if (!NLP_CHK_NODE_ACT(ndlp) || !ndlp->lat_data)
			continue;

		if (nport_index > 0) {
			nport_index--;
			continue;
		}

		if ((index + MAX_STAT_DATA_SIZE_PER_TARGET)
			> count)
			break;

		if (!ndlp->lat_data)
			continue;

		/* Print the WWN */
		sprintf(&buf[index], "%02x%02x%02x%02x%02x%02x%02x%02x:",
			ndlp->nlp_portname.u.wwn[0],
			ndlp->nlp_portname.u.wwn[1],
			ndlp->nlp_portname.u.wwn[2],
			ndlp->nlp_portname.u.wwn[3],
			ndlp->nlp_portname.u.wwn[4],
			ndlp->nlp_portname.u.wwn[5],
			ndlp->nlp_portname.u.wwn[6],
			ndlp->nlp_portname.u.wwn[7]);

		index = strlen(buf);

		for (i = 0; i < LPFC_MAX_BUCKET_COUNT; i++) {
			sprintf(&buf[index], "%010u,",
				ndlp->lat_data[i].cmd_count);
			index = strlen(buf);
		}
		sprintf(&buf[index], "\n");
		index = strlen(buf);
	}
	spin_unlock_irq(shost->host_lock);
	return index;
}

static struct bin_attribute sysfs_drvr_stat_data_attr = {
	.attr = {
		.name = "lpfc_drvr_stat_data",
		.mode = S_IRUSR,
	},
	.size = LPFC_MAX_TARGET * MAX_STAT_DATA_SIZE_PER_TARGET,
	.read = sysfs_drvr_stat_data_read,
	.write = NULL,
};

已提交
3638 3639 3640
/*
# lpfc_link_speed: Link speed selection for initializing the Fibre Channel
# connection.
3641
# Value range is [0,16]. Default value is 0.
已提交
3642
*/
3643
/**
3644
 * lpfc_link_speed_set - Set the adapters link speed
3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659
 * @phba: lpfc_hba pointer.
 * @val: link speed value.
 *
 * Description:
 * If val is in a valid range then set the adapter's link speed field and
 * issue a lip; if the lip fails reset the link speed to the old value.
 *
 * Notes:
 * If the value is not in range log a kernel error message and return an error.
 *
 * Returns:
 * zero if val is in range and lip okay.
 * non-zero return value from lpfc_issue_lip()
 * -EINVAL val out of range
 **/
3660 3661 3662
static ssize_t
lpfc_link_speed_store(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
3663
{
3664 3665 3666
	struct Scsi_Host  *shost = class_to_shost(dev);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
3667
	int val = LPFC_USER_LINK_SPEED_AUTO;
3668 3669
	int nolip = 0;
	const char *val_buf = buf;
3670 3671 3672
	int err;
	uint32_t prev_val;

3673 3674 3675 3676 3677 3678 3679 3680 3681 3682
	if (!strncmp(buf, "nolip ", strlen("nolip "))) {
		nolip = 1;
		val_buf = &buf[strlen("nolip ")];
	}

	if (!isdigit(val_buf[0]))
		return -EINVAL;
	if (sscanf(val_buf, "%i", &val) != 1)
		return -EINVAL;

3683 3684 3685 3686
	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
		"3055 lpfc_link_speed changed from %d to %d %s\n",
		phba->cfg_link_speed, val, nolip ? "(nolip)" : "(lip)");

3687 3688 3689 3690 3691
	if (((val == LPFC_USER_LINK_SPEED_1G) && !(phba->lmt & LMT_1Gb)) ||
	    ((val == LPFC_USER_LINK_SPEED_2G) && !(phba->lmt & LMT_2Gb)) ||
	    ((val == LPFC_USER_LINK_SPEED_4G) && !(phba->lmt & LMT_4Gb)) ||
	    ((val == LPFC_USER_LINK_SPEED_8G) && !(phba->lmt & LMT_8Gb)) ||
	    ((val == LPFC_USER_LINK_SPEED_10G) && !(phba->lmt & LMT_10Gb)) ||
3692 3693
	    ((val == LPFC_USER_LINK_SPEED_16G) && !(phba->lmt & LMT_16Gb)) ||
	    ((val == LPFC_USER_LINK_SPEED_32G) && !(phba->lmt & LMT_32Gb))) {
3694 3695 3696 3697
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
				"2879 lpfc_link_speed attribute cannot be set "
				"to %d. Speed is not supported by this port.\n",
				val);
3698
		return -EINVAL;
3699
	}
3700 3701 3702 3703 3704 3705 3706 3707
	if (val == LPFC_USER_LINK_SPEED_16G &&
		 phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
				"3112 lpfc_link_speed attribute cannot be set "
				"to %d. Speed is not supported in loop mode.\n",
				val);
		return -EINVAL;
	}
3708 3709
	if ((val >= 0) && (val <= LPFC_USER_LINK_SPEED_MAX) &&
	    (LPFC_USER_LINK_SPEED_BITMAP & (1 << val))) {
3710 3711
		prev_val = phba->cfg_link_speed;
		phba->cfg_link_speed = val;
3712 3713 3714
		if (nolip)
			return strlen(buf);

3715
		err = lpfc_issue_lip(lpfc_shost_from_vport(phba->pport));
3716
		if (err) {
3717
			phba->cfg_link_speed = prev_val;
3718 3719 3720
			return -EINVAL;
		} else
			return strlen(buf);
3721 3722
	}
	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3723 3724
		"0469 lpfc_link_speed attribute cannot be set to %d, "
		"allowed values are ["LPFC_LINK_SPEED_STRING"]\n", val);
3725 3726 3727 3728
	return -EINVAL;
}

static int lpfc_link_speed = 0;
3729
module_param(lpfc_link_speed, int, S_IRUGO);
3730 3731
MODULE_PARM_DESC(lpfc_link_speed, "Select link speed");
lpfc_param_show(link_speed)
3732 3733

/**
3734
 * lpfc_link_speed_init - Set the adapters link speed
3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748
 * @phba: lpfc_hba pointer.
 * @val: link speed value.
 *
 * Description:
 * If val is in a valid range then set the adapter's link speed field.
 *
 * Notes:
 * If the value is not in range log a kernel error message, clear the link
 * speed and return an error.
 *
 * Returns:
 * zero if val saved.
 * -EINVAL val out of range
 **/
3749 3750 3751
static int
lpfc_link_speed_init(struct lpfc_hba *phba, int val)
{
3752 3753 3754 3755 3756 3757 3758
	if (val == LPFC_USER_LINK_SPEED_16G && phba->cfg_topology == 4) {
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
			"3111 lpfc_link_speed of %d cannot "
			"support loop mode, setting topology to default.\n",
			 val);
		phba->cfg_topology = 0;
	}
3759 3760
	if ((val >= 0) && (val <= LPFC_USER_LINK_SPEED_MAX) &&
	    (LPFC_USER_LINK_SPEED_BITMAP & (1 << val))) {
3761 3762 3763 3764
		phba->cfg_link_speed = val;
		return 0;
	}
	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3765
			"0405 lpfc_link_speed attribute cannot "
3766 3767
			"be set to %d, allowed values are "
			"["LPFC_LINK_SPEED_STRING"]\n", val);
3768
	phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO;
3769 3770 3771
	return -EINVAL;
}

3772
static DEVICE_ATTR(lpfc_link_speed, S_IRUGO | S_IWUSR,
3773
		   lpfc_link_speed_show, lpfc_link_speed_store);
已提交
3774

J
James Smart 已提交
3775 3776 3777 3778 3779 3780
/*
# lpfc_aer_support: Support PCIe device Advanced Error Reporting (AER)
#       0  = aer disabled or not supported
#       1  = aer supported and enabled (default)
# Value range is [0,1]. Default value is 1.
*/
3781 3782 3783
LPFC_ATTR(aer_support, 1, 0, 1,
	"Enable PCIe device AER support");
lpfc_param_show(aer_support)
J
James Smart 已提交
3784 3785 3786 3787 3788 3789

/**
 * lpfc_aer_support_store - Set the adapter for aer support
 *
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
3790
 * @buf: containing enable or disable aer flag.
J
James Smart 已提交
3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836
 * @count: unused variable.
 *
 * Description:
 * If the val is 1 and currently the device's AER capability was not
 * enabled, invoke the kernel's enable AER helper routine, trying to
 * enable the device's AER capability. If the helper routine enabling
 * AER returns success, update the device's cfg_aer_support flag to
 * indicate AER is supported by the device; otherwise, if the device
 * AER capability is already enabled to support AER, then do nothing.
 *
 * If the val is 0 and currently the device's AER support was enabled,
 * invoke the kernel's disable AER helper routine. After that, update
 * the device's cfg_aer_support flag to indicate AER is not supported
 * by the device; otherwise, if the device AER capability is already
 * disabled from supporting AER, then do nothing.
 *
 * Returns:
 * length of the buf on success if val is in range the intended mode
 * is supported.
 * -EINVAL if val out of range or intended mode is not supported.
 **/
static ssize_t
lpfc_aer_support_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 val = 0, rc = -EINVAL;

	if (!isdigit(buf[0]))
		return -EINVAL;
	if (sscanf(buf, "%i", &val) != 1)
		return -EINVAL;

	switch (val) {
	case 0:
		if (phba->hba_flag & HBA_AER_ENABLED) {
			rc = pci_disable_pcie_error_reporting(phba->pcidev);
			if (!rc) {
				spin_lock_irq(&phba->hbalock);
				phba->hba_flag &= ~HBA_AER_ENABLED;
				spin_unlock_irq(&phba->hbalock);
				phba->cfg_aer_support = 0;
				rc = strlen(buf);
			} else
J
James Smart 已提交
3837 3838
				rc = -EPERM;
		} else {
J
James Smart 已提交
3839
			phba->cfg_aer_support = 0;
J
James Smart 已提交
3840 3841
			rc = strlen(buf);
		}
J
James Smart 已提交
3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852
		break;
	case 1:
		if (!(phba->hba_flag & HBA_AER_ENABLED)) {
			rc = pci_enable_pcie_error_reporting(phba->pcidev);
			if (!rc) {
				spin_lock_irq(&phba->hbalock);
				phba->hba_flag |= HBA_AER_ENABLED;
				spin_unlock_irq(&phba->hbalock);
				phba->cfg_aer_support = 1;
				rc = strlen(buf);
			} else
J
James Smart 已提交
3853 3854
				 rc = -EPERM;
		} else {
J
James Smart 已提交
3855
			phba->cfg_aer_support = 1;
J
James Smart 已提交
3856 3857
			rc = strlen(buf);
		}
J
James Smart 已提交
3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872
		break;
	default:
		rc = -EINVAL;
		break;
	}
	return rc;
}

static DEVICE_ATTR(lpfc_aer_support, S_IRUGO | S_IWUSR,
		   lpfc_aer_support_show, lpfc_aer_support_store);

/**
 * lpfc_aer_cleanup_state - Clean up aer state to the aer enabled device
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
3873
 * @buf: containing flag 1 for aer cleanup state.
J
James Smart 已提交
3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900
 * @count: unused variable.
 *
 * Description:
 * If the @buf contains 1 and the device currently has the AER support
 * enabled, then invokes the kernel AER helper routine
 * pci_cleanup_aer_uncorrect_error_status to clean up the uncorrectable
 * error status register.
 *
 * Notes:
 *
 * Returns:
 * -EINVAL if the buf does not contain the 1 or the device is not currently
 * enabled with the AER support.
 **/
static ssize_t
lpfc_aer_cleanup_state(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 val, rc = -1;

	if (!isdigit(buf[0]))
		return -EINVAL;
	if (sscanf(buf, "%i", &val) != 1)
		return -EINVAL;
J
James Smart 已提交
3901 3902
	if (val != 1)
		return -EINVAL;
J
James Smart 已提交
3903

J
James Smart 已提交
3904
	if (phba->hba_flag & HBA_AER_ENABLED)
J
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3905 3906 3907 3908 3909
		rc = pci_cleanup_aer_uncorrect_error_status(phba->pcidev);

	if (rc == 0)
		return strlen(buf);
	else
J
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3910
		return -EPERM;
J
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3911 3912 3913 3914 3915
}

static DEVICE_ATTR(lpfc_aer_state_cleanup, S_IWUSR, NULL,
		   lpfc_aer_cleanup_state);

3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009
/**
 * lpfc_sriov_nr_virtfn_store - Enable the adapter for sr-iov virtual functions
 *
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: containing the string the number of vfs to be enabled.
 * @count: unused variable.
 *
 * Description:
 * When this api is called either through user sysfs, the driver shall
 * try to enable or disable SR-IOV virtual functions according to the
 * following:
 *
 * If zero virtual function has been enabled to the physical function,
 * the driver shall invoke the pci enable virtual function api trying
 * to enable the virtual functions. If the nr_vfn provided is greater
 * than the maximum supported, the maximum virtual function number will
 * be used for invoking the api; otherwise, the nr_vfn provided shall
 * be used for invoking the api. If the api call returned success, the
 * actual number of virtual functions enabled will be set to the driver
 * cfg_sriov_nr_virtfn; otherwise, -EINVAL shall be returned and driver
 * cfg_sriov_nr_virtfn remains zero.
 *
 * If none-zero virtual functions have already been enabled to the
 * physical function, as reflected by the driver's cfg_sriov_nr_virtfn,
 * -EINVAL will be returned and the driver does nothing;
 *
 * If the nr_vfn provided is zero and none-zero virtual functions have
 * been enabled, as indicated by the driver's cfg_sriov_nr_virtfn, the
 * disabling virtual function api shall be invoded to disable all the
 * virtual functions and driver's cfg_sriov_nr_virtfn shall be set to
 * zero. Otherwise, if zero virtual function has been enabled, do
 * nothing.
 *
 * Returns:
 * length of the buf on success if val is in range the intended mode
 * is supported.
 * -EINVAL if val out of range or intended mode is not supported.
 **/
static ssize_t
lpfc_sriov_nr_virtfn_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 pci_dev *pdev = phba->pcidev;
	int val = 0, rc = -EINVAL;

	/* Sanity check on user data */
	if (!isdigit(buf[0]))
		return -EINVAL;
	if (sscanf(buf, "%i", &val) != 1)
		return -EINVAL;
	if (val < 0)
		return -EINVAL;

	/* Request disabling virtual functions */
	if (val == 0) {
		if (phba->cfg_sriov_nr_virtfn > 0) {
			pci_disable_sriov(pdev);
			phba->cfg_sriov_nr_virtfn = 0;
		}
		return strlen(buf);
	}

	/* Request enabling virtual functions */
	if (phba->cfg_sriov_nr_virtfn > 0) {
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
				"3018 There are %d virtual functions "
				"enabled on physical function.\n",
				phba->cfg_sriov_nr_virtfn);
		return -EEXIST;
	}

	if (val <= LPFC_MAX_VFN_PER_PFN)
		phba->cfg_sriov_nr_virtfn = val;
	else {
		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
				"3019 Enabling %d virtual functions is not "
				"allowed.\n", val);
		return -EINVAL;
	}

	rc = lpfc_sli_probe_sriov_nr_virtfn(phba, phba->cfg_sriov_nr_virtfn);
	if (rc) {
		phba->cfg_sriov_nr_virtfn = 0;
		rc = -EPERM;
	} else
		rc = strlen(buf);

	return rc;
}

4010 4011
LPFC_ATTR(sriov_nr_virtfn, LPFC_DEF_VFN_PER_PFN, 0, LPFC_MAX_VFN_PER_PFN,
	"Enable PCIe device SR-IOV virtual fn");
4012

4013
lpfc_param_show(sriov_nr_virtfn)
4014 4015 4016
static DEVICE_ATTR(lpfc_sriov_nr_virtfn, S_IRUGO | S_IWUSR,
		   lpfc_sriov_nr_virtfn_show, lpfc_sriov_nr_virtfn_store);

4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087
/**
 * lpfc_request_firmware_store - Request for Linux generic firmware upgrade
 *
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: containing the string the number of vfs to be enabled.
 * @count: unused variable.
 *
 * Description:
 *
 * Returns:
 * length of the buf on success if val is in range the intended mode
 * is supported.
 * -EINVAL if val out of range or intended mode is not supported.
 **/
static ssize_t
lpfc_request_firmware_upgrade_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 val = 0, rc = -EINVAL;

	/* Sanity check on user data */
	if (!isdigit(buf[0]))
		return -EINVAL;
	if (sscanf(buf, "%i", &val) != 1)
		return -EINVAL;
	if (val != 1)
		return -EINVAL;

	rc = lpfc_sli4_request_firmware_update(phba, RUN_FW_UPGRADE);
	if (rc)
		rc = -EPERM;
	else
		rc = strlen(buf);
	return rc;
}

static int lpfc_req_fw_upgrade;
module_param(lpfc_req_fw_upgrade, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(lpfc_req_fw_upgrade, "Enable Linux generic firmware upgrade");
lpfc_param_show(request_firmware_upgrade)

/**
 * lpfc_request_firmware_upgrade_init - Enable initial linux generic fw upgrade
 * @phba: lpfc_hba pointer.
 * @val: 0 or 1.
 *
 * Description:
 * Set the initial Linux generic firmware upgrade enable or disable flag.
 *
 * Returns:
 * zero if val saved.
 * -EINVAL val out of range
 **/
static int
lpfc_request_firmware_upgrade_init(struct lpfc_hba *phba, int val)
{
	if (val >= 0 && val <= 1) {
		phba->cfg_request_firmware_upgrade = val;
		return 0;
	}
	return -EINVAL;
}
static DEVICE_ATTR(lpfc_req_fw_upgrade, S_IRUGO | S_IWUSR,
		   lpfc_request_firmware_upgrade_show,
		   lpfc_request_firmware_upgrade_store);

4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113
/**
 * lpfc_fcp_imax_store
 *
 * @dev: class device that is converted into a Scsi_host.
 * @attr: device attribute, not used.
 * @buf: string with the number of fast-path FCP interrupts per second.
 * @count: unused variable.
 *
 * Description:
 * If val is in a valid range [636,651042], then set the adapter's
 * maximum number of fast-path FCP interrupts per second.
 *
 * Returns:
 * length of the buf on success if val is in range the intended mode
 * is supported.
 * -EINVAL if val out of range or intended mode is not supported.
 **/
static ssize_t
lpfc_fcp_imax_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 val = 0, i;

4114 4115 4116 4117
	/* fcp_imax is only valid for SLI4 */
	if (phba->sli_rev != LPFC_SLI_REV4)
		return -EINVAL;

4118 4119 4120 4121 4122 4123
	/* Sanity check on user data */
	if (!isdigit(buf[0]))
		return -EINVAL;
	if (sscanf(buf, "%i", &val) != 1)
		return -EINVAL;

4124 4125 4126 4127 4128
	/*
	 * Value range for the HBA is [5000,5000000]
	 * The value for each EQ depends on how many EQs are configured.
	 */
	if (val < LPFC_MIN_IMAX || val > LPFC_MAX_IMAX)
4129 4130 4131
		return -EINVAL;

	phba->cfg_fcp_imax = (uint32_t)val;
4132
	for (i = 0; i < phba->cfg_fcp_io_channel; i += LPFC_MAX_EQ_DELAY)
4133 4134 4135 4136 4137 4138 4139
		lpfc_modify_fcp_eq_delay(phba, i);

	return strlen(buf);
}

/*
# lpfc_fcp_imax: The maximum number of fast-path FCP interrupts per second
4140
# for the HBA.
4141
#
4142
# Value range is [5,000 to 5,000,000]. Default value is 50,000.
4143
*/
4144
static int lpfc_fcp_imax = LPFC_DEF_IMAX;
4145 4146
module_param(lpfc_fcp_imax, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(lpfc_fcp_imax,
4147
	    "Set the maximum number of FCP interrupts per second per HBA");
4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165
lpfc_param_show(fcp_imax)

/**
 * lpfc_fcp_imax_init - Set the initial sr-iov virtual function enable
 * @phba: lpfc_hba pointer.
 * @val: link speed value.
 *
 * Description:
 * If val is in a valid range [636,651042], then initialize the adapter's
 * maximum number of fast-path FCP interrupts per second.
 *
 * Returns:
 * zero if val saved.
 * -EINVAL val out of range
 **/
static int
lpfc_fcp_imax_init(struct lpfc_hba *phba, int val)
{
4166 4167 4168 4169 4170 4171
	if (phba->sli_rev != LPFC_SLI_REV4) {
		phba->cfg_fcp_imax = 0;
		return 0;
	}

	if (val >= LPFC_MIN_IMAX && val <= LPFC_MAX_IMAX) {
4172 4173 4174 4175 4176
		phba->cfg_fcp_imax = val;
		return 0;
	}

	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4177 4178
			"3016 lpfc_fcp_imax: %d out of range, using default\n",
			val);
4179
	phba->cfg_fcp_imax = LPFC_DEF_IMAX;
4180 4181 4182 4183 4184 4185 4186

	return 0;
}

static DEVICE_ATTR(lpfc_fcp_imax, S_IRUGO | S_IWUSR,
		   lpfc_fcp_imax_show, lpfc_fcp_imax_store);

4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202
/**
 * lpfc_state_show - Display current driver CPU affinity
 * @dev: class converted to a Scsi_host structure.
 * @attr: device attribute, not used.
 * @buf: on return contains text describing the state of the link.
 *
 * Returns: size of formatted string.
 **/
static ssize_t
lpfc_fcp_cpu_map_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;
	struct lpfc_vector_map_info *cpup;
4203
	int  len = 0;
4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230

	if ((phba->sli_rev != LPFC_SLI_REV4) ||
	    (phba->intr_type != MSIX))
		return len;

	switch (phba->cfg_fcp_cpu_map) {
	case 0:
		len += snprintf(buf + len, PAGE_SIZE-len,
				"fcp_cpu_map: No mapping (%d)\n",
				phba->cfg_fcp_cpu_map);
		return len;
	case 1:
		len += snprintf(buf + len, PAGE_SIZE-len,
				"fcp_cpu_map: HBA centric mapping (%d): "
				"%d online CPUs\n",
				phba->cfg_fcp_cpu_map,
				phba->sli4_hba.num_online_cpu);
		break;
	case 2:
		len += snprintf(buf + len, PAGE_SIZE-len,
				"fcp_cpu_map: Driver centric mapping (%d): "
				"%d online CPUs\n",
				phba->cfg_fcp_cpu_map,
				phba->sli4_hba.num_online_cpu);
		break;
	}

4231 4232 4233 4234
	while (phba->sli4_hba.curr_disp_cpu < phba->sli4_hba.num_present_cpu) {
		cpup = &phba->sli4_hba.cpu_map[phba->sli4_hba.curr_disp_cpu];

		/* margin should fit in this and the truncated message */
4235 4236 4237 4238
		if (cpup->irq == LPFC_VECTOR_MAP_EMPTY)
			len += snprintf(buf + len, PAGE_SIZE-len,
					"CPU %02d io_chan %02d "
					"physid %d coreid %d\n",
4239 4240
					phba->sli4_hba.curr_disp_cpu,
					cpup->channel_id, cpup->phys_id,
4241 4242 4243 4244 4245
					cpup->core_id);
		else
			len += snprintf(buf + len, PAGE_SIZE-len,
					"CPU %02d io_chan %02d "
					"physid %d coreid %d IRQ %d\n",
4246 4247
					phba->sli4_hba.curr_disp_cpu,
					cpup->channel_id, cpup->phys_id,
4248 4249
					cpup->core_id, cpup->irq);

4250 4251 4252 4253 4254 4255 4256 4257 4258
		phba->sli4_hba.curr_disp_cpu++;

		/* display max number of CPUs keeping some margin */
		if (phba->sli4_hba.curr_disp_cpu <
				phba->sli4_hba.num_present_cpu &&
				(len >= (PAGE_SIZE - 64))) {
			len += snprintf(buf + len, PAGE_SIZE-len, "more...\n");
			break;
		}
4259
	}
4260 4261 4262 4263

	if (phba->sli4_hba.curr_disp_cpu == phba->sli4_hba.num_present_cpu)
		phba->sli4_hba.curr_disp_cpu = 0;

4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327
	return len;
}

/**
 * lpfc_fcp_cpu_map_store - Change CPU affinity of driver vectors
 * @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  - Not implemented yet.
 **/
static ssize_t
lpfc_fcp_cpu_map_store(struct device *dev, struct device_attribute *attr,
		       const char *buf, size_t count)
{
	int status = -EINVAL;
	return status;
}

/*
# lpfc_fcp_cpu_map: Defines how to map CPUs to IRQ vectors
# for the HBA.
#
# Value range is [0 to 2]. Default value is LPFC_DRIVER_CPU_MAP (2).
#	0 - Do not affinitze IRQ vectors
#	1 - Affintize HBA vectors with respect to each HBA
#	    (start with CPU0 for each HBA)
#	2 - Affintize HBA vectors with respect to the entire driver
#	    (round robin thru all CPUs across all HBAs)
*/
static int lpfc_fcp_cpu_map = LPFC_DRIVER_CPU_MAP;
module_param(lpfc_fcp_cpu_map, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(lpfc_fcp_cpu_map,
		 "Defines how to map CPUs to IRQ vectors per HBA");

/**
 * lpfc_fcp_cpu_map_init - Set the initial sr-iov virtual function enable
 * @phba: lpfc_hba pointer.
 * @val: link speed value.
 *
 * Description:
 * If val is in a valid range [0-2], then affinitze the adapter's
 * MSIX vectors.
 *
 * Returns:
 * zero if val saved.
 * -EINVAL val out of range
 **/
static int
lpfc_fcp_cpu_map_init(struct lpfc_hba *phba, int val)
{
	if (phba->sli_rev != LPFC_SLI_REV4) {
		phba->cfg_fcp_cpu_map = 0;
		return 0;
	}

	if (val >= LPFC_MIN_CPU_MAP && val <= LPFC_MAX_CPU_MAP) {
		phba->cfg_fcp_cpu_map = val;
		return 0;
	}

	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4328 4329
			"3326 lpfc_fcp_cpu_map: %d out of range, using "
			"default\n", val);
4330 4331 4332 4333 4334 4335 4336 4337
	phba->cfg_fcp_cpu_map = LPFC_DRIVER_CPU_MAP;

	return 0;
}

static DEVICE_ATTR(lpfc_fcp_cpu_map, S_IRUGO | S_IWUSR,
		   lpfc_fcp_cpu_map_show, lpfc_fcp_cpu_map_store);

已提交
4338 4339 4340 4341
/*
# lpfc_fcp_class:  Determines FC class to use for the FCP protocol.
# Value range is [2,3]. Default value is 3.
*/
4342 4343
LPFC_VPORT_ATTR_R(fcp_class, 3, 2, 3,
		  "Select Fibre Channel class of service for FCP sequences");
已提交
4344 4345 4346 4347 4348

/*
# lpfc_use_adisc: Use ADISC for FCP rediscovery instead of PLOGI. Value range
# is [0,1]. Default value is 0.
*/
4349 4350
LPFC_VPORT_ATTR_RW(use_adisc, 0, 0, 1,
		   "Use ADISC on rediscovery to authenticate FCP devices");
已提交
4351

4352 4353 4354 4355 4356 4357 4358 4359
/*
# lpfc_first_burst_size: First burst size to use on the NPorts
# that support first burst.
# Value range is [0,65536]. Default value is 0.
*/
LPFC_VPORT_ATTR_RW(first_burst_size, 0, 0, 65536,
		   "First burst size for Targets that support first burst");

4360 4361 4362 4363 4364 4365 4366 4367
/*
# lpfc_max_scsicmpl_time: Use scsi command completion time to control I/O queue
# depth. Default value is 0. When the value of this parameter is zero the
# SCSI command completion time is not used for controlling I/O queue depth. When
# the parameter is set to a non-zero value, the I/O queue depth is controlled
# to limit the I/O completion time to the parameter value.
# The value is set in milliseconds.
*/
4368
LPFC_VPORT_ATTR(max_scsicmpl_time, 0, 0, 60000,
4369
	"Use command completion time to control queue depth");
4370

4371 4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389
lpfc_vport_param_show(max_scsicmpl_time);
static int
lpfc_max_scsicmpl_time_set(struct lpfc_vport *vport, int val)
{
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_nodelist *ndlp, *next_ndlp;

	if (val == vport->cfg_max_scsicmpl_time)
		return 0;
	if ((val < 0) || (val > 60000))
		return -EINVAL;
	vport->cfg_max_scsicmpl_time = val;

	spin_lock_irq(shost->host_lock);
	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
		if (!NLP_CHK_NODE_ACT(ndlp))
			continue;
		if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
			continue;
4390
		ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4391 4392 4393 4394 4395 4396 4397 4398 4399
	}
	spin_unlock_irq(shost->host_lock);
	return 0;
}
lpfc_vport_param_store(max_scsicmpl_time);
static DEVICE_ATTR(lpfc_max_scsicmpl_time, S_IRUGO | S_IWUSR,
		   lpfc_max_scsicmpl_time_show,
		   lpfc_max_scsicmpl_time_store);

已提交
4400 4401 4402 4403 4404 4405
/*
# lpfc_ack0: Use ACK0, instead of ACK1 for class 2 acknowledgement. Value
# range is [0,1]. Default value is 0.
*/
LPFC_ATTR_R(ack0, 0, 0, 1, "Enable ACK0 support");

4406 4407 4408 4409 4410 4411
/*
# lpfc_fcp_io_sched: Determine scheduling algrithmn for issuing FCP cmds
# range is [0,1]. Default value is 0.
# For [0], FCP commands are issued to Work Queues ina round robin fashion.
# For [1], FCP commands are issued to a Work Queue associated with the
#          current CPU.
4412 4413 4414
# It would be set to 1 by the driver if it's able to set up cpu affinity
# for FCP I/Os through Work Queue associated with the current CPU. Otherwise,
# roundrobin scheduling of FCP I/Os through WQs will be used.
4415
*/
4416
LPFC_ATTR_RW(fcp_io_sched, 0, 0, 1, "Determine scheduling algorithm for "
4417 4418
		"issuing commands [0] - Round Robin, [1] - Current CPU");

4419 4420 4421 4422 4423 4424 4425 4426 4427 4428
/*
# lpfc_fcp2_no_tgt_reset: Determine bus reset behavior
# range is [0,1]. Default value is 0.
# For [0], bus reset issues target reset to ALL devices
# For [1], bus reset issues target reset to non-FCP2 devices
*/
LPFC_ATTR_RW(fcp2_no_tgt_reset, 0, 0, 1, "Determine bus reset behavior for "
	     "FCP2 devices [0] - issue tgt reset, [1] - no tgt reset");


已提交
4429 4430 4431
/*
# lpfc_cr_delay & lpfc_cr_count: Default values for I/O colaesing
# cr_delay (msec) or cr_count outstanding commands. cr_delay can take
4432
# value [0,63]. cr_count can take value [1,255]. Default value of cr_delay
已提交
4433 4434 4435
# is 0. Default value of cr_count is 1. The cr_count feature is disabled if
# cr_delay is set to 0.
*/
4436
LPFC_ATTR_RW(cr_delay, 0, 0, 63, "A count of milliseconds after which an "
已提交
4437 4438
		"interrupt response is generated");

4439
LPFC_ATTR_RW(cr_count, 1, 1, 255, "A count of I/O completions after which an "
已提交
4440 4441
		"interrupt response is generated");

4442 4443 4444 4445 4446 4447 4448 4449
/*
# lpfc_multi_ring_support:  Determines how many rings to spread available
# cmd/rsp IOCB entries across.
# Value range is [1,2]. Default value is 1.
*/
LPFC_ATTR_R(multi_ring_support, 1, 1, 2, "Determines number of primary "
		"SLI rings to spread IOCB entries across");

4450 4451 4452 4453 4454
/*
# lpfc_multi_ring_rctl:  If lpfc_multi_ring_support is enabled, this
# identifies what rctl value to configure the additional ring for.
# Value range is [1,0xff]. Default value is 4 (Unsolicated Data).
*/
4455
LPFC_ATTR_R(multi_ring_rctl, FC_RCTL_DD_UNSOL_DATA, 1,
4456 4457 4458 4459 4460 4461 4462
	     255, "Identifies RCTL for additional ring configuration");

/*
# lpfc_multi_ring_type:  If lpfc_multi_ring_support is enabled, this
# identifies what type value to configure the additional ring for.
# Value range is [1,0xff]. Default value is 5 (LLC/SNAP).
*/
4463
LPFC_ATTR_R(multi_ring_type, FC_TYPE_IP, 1,
4464 4465
	     255, "Identifies TYPE for additional ring configuration");

已提交
4466
/*
4467 4468 4469 4470 4471
# lpfc_enable_SmartSAN: Sets up FDMI support for SmartSAN
#       0  = SmartSAN functionality disabled (default)
#       1  = SmartSAN functionality enabled
# This parameter will override the value of lpfc_fdmi_on module parameter.
# Value range is [0,1]. Default value is 0.
已提交
4472
*/
4473 4474 4475 4476 4477 4478
LPFC_ATTR_R(enable_SmartSAN, 0, 0, 1, "Enable SmartSAN functionality");

/*
# lpfc_fdmi_on: Controls FDMI support.
#       0       No FDMI support (default)
#       1       Traditional FDMI support
4479 4480 4481 4482 4483 4484
# Traditional FDMI support means the driver will assume FDMI-2 support;
# however, if that fails, it will fallback to FDMI-1.
# If lpfc_enable_SmartSAN is set to 1, the driver ignores lpfc_fdmi_on.
# If lpfc_enable_SmartSAN is set 0, the driver uses the current value of
# lpfc_fdmi_on.
# Value range [0,1]. Default value is 0.
4485
*/
4486
LPFC_ATTR_R(fdmi_on, 0, 0, 1, "Enable FDMI support");
已提交
4487 4488 4489 4490 4491

/*
# Specifies the maximum number of ELS cmds we can have outstanding (for
# discovery). Value range is [1,64]. Default value = 32.
*/
4492
LPFC_VPORT_ATTR(discovery_threads, 32, 1, 64, "Maximum number of ELS commands "
已提交
4493 4494 4495
		 "during discovery");

/*
4496 4497 4498 4499 4500 4501 4502 4503 4504 4505 4506 4507 4508 4509 4510 4511 4512 4513
# lpfc_max_luns: maximum allowed LUN ID. This is the highest LUN ID that
#    will be scanned by the SCSI midlayer when sequential scanning is
#    used; and is also the highest LUN ID allowed when the SCSI midlayer
#    parses REPORT_LUN responses. The lpfc driver has no LUN count or
#    LUN ID limit, but the SCSI midlayer requires this field for the uses
#    above. The lpfc driver limits the default value to 255 for two reasons.
#    As it bounds the sequential scan loop, scanning for thousands of luns
#    on a target can take minutes of wall clock time.  Additionally,
#    there are FC targets, such as JBODs, that only recognize 8-bits of
#    LUN ID. When they receive a value greater than 8 bits, they chop off
#    the high order bits. In other words, they see LUN IDs 0, 256, 512,
#    and so on all as LUN ID 0. This causes the linux kernel, which sees
#    valid responses at each of the LUN IDs, to believe there are multiple
#    devices present, when in fact, there is only 1.
#    A customer that is aware of their target behaviors, and the results as
#    indicated above, is welcome to increase the lpfc_max_luns value.
#    As mentioned, this value is not used by the lpfc driver, only the
#    SCSI midlayer.
J
James Smart 已提交
4514 4515
# Value range is [0,65535]. Default value is 255.
# NOTE: The SCSI layer might probe all allowed LUN on some old targets.
已提交
4516
*/
4517
LPFC_VPORT_ULL_ATTR_R(max_luns, 255, 0, 65535, "Maximum allowed LUN ID");
已提交
4518

4519 4520 4521 4522 4523 4524 4525
/*
# lpfc_poll_tmo: .Milliseconds driver will wait between polling FCP ring.
# Value range is [1,255], default value is 10.
*/
LPFC_ATTR_RW(poll_tmo, 10, 1, 255,
	     "Milliseconds driver will wait between polling FCP ring");

4526
/*
4527 4528 4529 4530 4531 4532
# lpfc_task_mgmt_tmo: Maximum time to wait for task management commands
# to complete in seconds. Value range is [5,180], default value is 60.
*/
LPFC_ATTR_RW(task_mgmt_tmo, 60, 5, 180,
	     "Maximum time to wait for task management commands to complete");
/*
4533 4534
# lpfc_use_msi: Use MSI (Message Signaled Interrupts) in systems that
#		support this feature
4535
#       0  = MSI disabled
4536
#       1  = MSI enabled
4537 4538
#       2  = MSI-X enabled (default)
# Value range is [0,2]. Default value is 2.
4539
*/
4540
LPFC_ATTR_R(use_msi, 2, 0, 2, "Use Message Signaled Interrupts (1) or "
4541
	    "MSI-X (2), if possible");
4542

4543 4544 4545 4546 4547 4548 4549 4550 4551
/*
# lpfc_fcp_io_channel: Set the number of FCP EQ/CQ/WQ IO channels
#
# Value range is [1,7]. Default value is 4.
*/
LPFC_ATTR_R(fcp_io_channel, LPFC_FCP_IO_CHAN_DEF, LPFC_FCP_IO_CHAN_MIN,
	    LPFC_FCP_IO_CHAN_MAX,
	    "Set the number of FCP I/O channels");

4552 4553 4554 4555 4556 4557 4558
/*
# lpfc_enable_hba_reset: Allow or prevent HBA resets to the hardware.
#       0  = HBA resets disabled
#       1  = HBA resets enabled (default)
# Value range is [0,1]. Default value is 1.
*/
LPFC_ATTR_R(enable_hba_reset, 1, 0, 1, "Enable HBA resets from the driver.");
4559

4560
/*
4561
# lpfc_enable_hba_heartbeat: Disable HBA heartbeat timer..
4562 4563 4564 4565
#       0  = HBA Heartbeat disabled
#       1  = HBA Heartbeat enabled (default)
# Value range is [0,1]. Default value is 1.
*/
4566
LPFC_ATTR_R(enable_hba_heartbeat, 0, 0, 1, "Enable HBA Heartbeat.");
4567

4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580
/*
# lpfc_EnableXLane: Enable Express Lane Feature
#      0x0   Express Lane Feature disabled
#      0x1   Express Lane Feature enabled
# Value range is [0,1]. Default value is 0.
*/
LPFC_ATTR_R(EnableXLane, 0, 0, 1, "Enable Express Lane Feature.");

/*
# lpfc_XLanePriority:  Define CS_CTL priority for Express Lane Feature
#       0x0 - 0x7f  = CS_CTL field in FC header (high 7 bits)
# Value range is [0x0,0x7f]. Default value is 0
*/
4581
LPFC_ATTR_RW(XLanePriority, 0, 0x0, 0x7f, "CS_CTL for Express Lane Feature.");
4582

4583 4584 4585 4586 4587 4588 4589 4590
/*
# lpfc_enable_bg: Enable BlockGuard (Emulex's Implementation of T10-DIF)
#       0  = BlockGuard disabled (default)
#       1  = BlockGuard enabled
# Value range is [0,1]. Default value is 0.
*/
LPFC_ATTR_R(enable_bg, 0, 0, 1, "Enable BlockGuard Support");

4591 4592 4593 4594 4595
/*
# lpfc_fcp_look_ahead: Look ahead for completions in FCP start routine
#       0  = disabled (default)
#       1  = enabled
# Value range is [0,1]. Default value is 0.
4596 4597
#
# This feature in under investigation and may be supported in the future.
4598 4599 4600
*/
unsigned int lpfc_fcp_look_ahead = LPFC_LOOK_AHEAD_OFF;

4601 4602 4603 4604 4605 4606 4607
/*
# lpfc_prot_mask: i
#	- Bit mask of host protection capabilities used to register with the
#	  SCSI mid-layer
# 	- Only meaningful if BG is turned on (lpfc_enable_bg=1).
#	- Allows you to ultimately specify which profiles to use
#	- Default will result in registering capabilities for all profiles.
4608 4609 4610 4611 4612 4613
#	- SHOST_DIF_TYPE1_PROTECTION	1
#		HBA supports T10 DIF Type 1: HBA to Target Type 1 Protection
#	- SHOST_DIX_TYPE0_PROTECTION	8
#		HBA supports DIX Type 0: Host to HBA protection only
#	- SHOST_DIX_TYPE1_PROTECTION	16
#		HBA supports DIX Type 1: Host to HBA  Type 1 protection
4614 4615
#
*/
4616 4617 4618 4619 4620 4621 4622 4623 4624
LPFC_ATTR(prot_mask,
	(SHOST_DIF_TYPE1_PROTECTION |
	SHOST_DIX_TYPE0_PROTECTION |
	SHOST_DIX_TYPE1_PROTECTION),
	0,
	(SHOST_DIF_TYPE1_PROTECTION |
	SHOST_DIX_TYPE0_PROTECTION |
	SHOST_DIX_TYPE1_PROTECTION),
	"T10-DIF host protection capabilities mask");
4625 4626 4627 4628

/*
# lpfc_prot_guard: i
#	- Bit mask of protection guard types to register with the SCSI mid-layer
4629
#	- Guard types are currently either 1) T10-DIF CRC 2) IP checksum
4630 4631 4632 4633
#	- Allows you to ultimately specify which profiles to use
#	- Default will result in registering capabilities for all guard types
#
*/
4634 4635 4636
LPFC_ATTR(prot_guard,
	SHOST_DIX_GUARD_IP, SHOST_DIX_GUARD_CRC, SHOST_DIX_GUARD_IP,
	"T10-DIF host protection guard type");
4637

4638 4639 4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650 4651
/*
 * Delay initial NPort discovery when Clean Address bit is cleared in
 * FLOGI/FDISC accept and FCID/Fabric name/Fabric portname is changed.
 * This parameter can have value 0 or 1.
 * When this parameter is set to 0, no delay is added to the initial
 * discovery.
 * When this parameter is set to non-zero value, initial Nport discovery is
 * delayed by ra_tov seconds when Clean Address bit is cleared in FLOGI/FDISC
 * accept and FCID/Fabric name/Fabric portname is changed.
 * Driver always delay Nport discovery for subsequent FLOGI/FDISC completion
 * when Clean Address bit is cleared in FLOGI/FDISC
 * accept and FCID/Fabric name/Fabric portname is changed.
 * Default value is 0.
 */
4652 4653
LPFC_ATTR(delay_discovery, 0, 0, 1,
	"Delay NPort discovery when Clean Address bit is cleared.");
4654

4655
/*
4656
 * lpfc_sg_seg_cnt - Initial Maximum DMA Segment Count
4657
 * This value can be set to values between 64 and 4096. The default value is
4658 4659
 * 64, but may be increased to allow for larger Max I/O sizes. The scsi layer
 * will be allowed to request I/Os of sizes up to (MAX_SEG_COUNT * SEG_SIZE).
4660 4661 4662
 * Because of the additional overhead involved in setting up T10-DIF,
 * this parameter will be limited to 128 if BlockGuard is enabled under SLI4
 * and will be limited to 512 if BlockGuard is enabled under SLI3.
4663 4664 4665 4666
 */
LPFC_ATTR_R(sg_seg_cnt, LPFC_DEFAULT_SG_SEG_CNT, LPFC_DEFAULT_SG_SEG_CNT,
	    LPFC_MAX_SG_SEG_CNT, "Max Scatter Gather Segment Count");

4667 4668 4669 4670 4671 4672 4673
/*
 * This parameter will be depricated, the driver cannot limit the
 * protection data s/g list.
 */
LPFC_ATTR_R(prot_sg_seg_cnt, LPFC_DEFAULT_SG_SEG_CNT,
	    LPFC_DEFAULT_SG_SEG_CNT, LPFC_MAX_SG_SEG_CNT,
	    "Max Protection Scatter Gather Segment Count");
4674

J
James Smart 已提交
4675 4676 4677 4678 4679 4680 4681 4682
/*
 * lpfc_enable_mds_diags: Enable MDS Diagnostics
 *       0  = MDS Diagnostics disabled (default)
 *       1  = MDS Diagnostics enabled
 * Value range is [0,1]. Default value is 0.
 */
LPFC_ATTR_R(enable_mds_diags, 0, 0, 1, "Enable MDS Diagnostics");

4683
struct device_attribute *lpfc_hba_attrs[] = {
4684 4685 4686 4687
	&dev_attr_bg_info,
	&dev_attr_bg_guard_err,
	&dev_attr_bg_apptag_err,
	&dev_attr_bg_reftag_err,
4688 4689 4690 4691 4692 4693 4694 4695 4696
	&dev_attr_info,
	&dev_attr_serialnum,
	&dev_attr_modeldesc,
	&dev_attr_modelname,
	&dev_attr_programtype,
	&dev_attr_portnum,
	&dev_attr_fwrev,
	&dev_attr_hdw,
	&dev_attr_option_rom_version,
4697
	&dev_attr_link_state,
4698
	&dev_attr_num_discovered_ports,
4699
	&dev_attr_menlo_mgmt_mode,
4700
	&dev_attr_lpfc_drvr_version,
4701
	&dev_attr_lpfc_enable_fip,
4702 4703 4704
	&dev_attr_lpfc_temp_sensor,
	&dev_attr_lpfc_log_verbose,
	&dev_attr_lpfc_lun_queue_depth,
4705
	&dev_attr_lpfc_tgt_queue_depth,
4706 4707 4708 4709 4710 4711
	&dev_attr_lpfc_hba_queue_depth,
	&dev_attr_lpfc_peer_port_login,
	&dev_attr_lpfc_nodev_tmo,
	&dev_attr_lpfc_devloss_tmo,
	&dev_attr_lpfc_fcp_class,
	&dev_attr_lpfc_use_adisc,
4712
	&dev_attr_lpfc_first_burst_size,
4713 4714 4715 4716
	&dev_attr_lpfc_ack0,
	&dev_attr_lpfc_topology,
	&dev_attr_lpfc_scan_down,
	&dev_attr_lpfc_link_speed,
4717
	&dev_attr_lpfc_fcp_io_sched,
4718
	&dev_attr_lpfc_fcp2_no_tgt_reset,
4719 4720 4721 4722 4723 4724
	&dev_attr_lpfc_cr_delay,
	&dev_attr_lpfc_cr_count,
	&dev_attr_lpfc_multi_ring_support,
	&dev_attr_lpfc_multi_ring_rctl,
	&dev_attr_lpfc_multi_ring_type,
	&dev_attr_lpfc_fdmi_on,
4725
	&dev_attr_lpfc_enable_SmartSAN,
4726 4727
	&dev_attr_lpfc_max_luns,
	&dev_attr_lpfc_enable_npiv,
4728
	&dev_attr_lpfc_fcf_failover_policy,
4729
	&dev_attr_lpfc_enable_rrq,
4730 4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741
	&dev_attr_nport_evt_cnt,
	&dev_attr_board_mode,
	&dev_attr_max_vpi,
	&dev_attr_used_vpi,
	&dev_attr_max_rpi,
	&dev_attr_used_rpi,
	&dev_attr_max_xri,
	&dev_attr_used_xri,
	&dev_attr_npiv_info,
	&dev_attr_issue_reset,
	&dev_attr_lpfc_poll,
	&dev_attr_lpfc_poll_tmo,
4742
	&dev_attr_lpfc_task_mgmt_tmo,
4743
	&dev_attr_lpfc_use_msi,
4744
	&dev_attr_lpfc_fcp_imax,
4745
	&dev_attr_lpfc_fcp_cpu_map,
4746
	&dev_attr_lpfc_fcp_io_channel,
4747
	&dev_attr_lpfc_enable_bg,
4748 4749 4750 4751 4752
	&dev_attr_lpfc_soft_wwnn,
	&dev_attr_lpfc_soft_wwpn,
	&dev_attr_lpfc_soft_wwn_enable,
	&dev_attr_lpfc_enable_hba_reset,
	&dev_attr_lpfc_enable_hba_heartbeat,
4753 4754 4755 4756 4757 4758 4759
	&dev_attr_lpfc_EnableXLane,
	&dev_attr_lpfc_XLanePriority,
	&dev_attr_lpfc_xlane_lun,
	&dev_attr_lpfc_xlane_tgt,
	&dev_attr_lpfc_xlane_vpt,
	&dev_attr_lpfc_xlane_lun_state,
	&dev_attr_lpfc_xlane_lun_status,
4760
	&dev_attr_lpfc_xlane_priority,
4761
	&dev_attr_lpfc_sg_seg_cnt,
4762
	&dev_attr_lpfc_max_scsicmpl_time,
4763
	&dev_attr_lpfc_stat_data_ctrl,
4764
	&dev_attr_lpfc_prot_sg_seg_cnt,
J
James Smart 已提交
4765 4766
	&dev_attr_lpfc_aer_support,
	&dev_attr_lpfc_aer_state_cleanup,
4767
	&dev_attr_lpfc_sriov_nr_virtfn,
4768
	&dev_attr_lpfc_req_fw_upgrade,
4769
	&dev_attr_lpfc_suppress_link_up,
4770 4771 4772 4773
	&dev_attr_lpfc_iocb_cnt,
	&dev_attr_iocb_hw,
	&dev_attr_txq_hw,
	&dev_attr_txcmplq_hw,
4774 4775
	&dev_attr_lpfc_fips_level,
	&dev_attr_lpfc_fips_rev,
4776
	&dev_attr_lpfc_dss,
4777
	&dev_attr_lpfc_sriov_hw_max_virtfn,
4778
	&dev_attr_protocol,
4779
	&dev_attr_lpfc_xlane_supported,
J
James Smart 已提交
4780
	&dev_attr_lpfc_enable_mds_diags,
已提交
4781 4782 4783
	NULL,
};

4784 4785
struct device_attribute *lpfc_vport_attrs[] = {
	&dev_attr_info,
4786
	&dev_attr_link_state,
4787 4788 4789 4790
	&dev_attr_num_discovered_ports,
	&dev_attr_lpfc_drvr_version,
	&dev_attr_lpfc_log_verbose,
	&dev_attr_lpfc_lun_queue_depth,
4791
	&dev_attr_lpfc_tgt_queue_depth,
4792 4793 4794 4795 4796 4797 4798
	&dev_attr_lpfc_nodev_tmo,
	&dev_attr_lpfc_devloss_tmo,
	&dev_attr_lpfc_hba_queue_depth,
	&dev_attr_lpfc_peer_port_login,
	&dev_attr_lpfc_restrict_login,
	&dev_attr_lpfc_fcp_class,
	&dev_attr_lpfc_use_adisc,
4799
	&dev_attr_lpfc_first_burst_size,
4800 4801 4802 4803
	&dev_attr_lpfc_max_luns,
	&dev_attr_nport_evt_cnt,
	&dev_attr_npiv_info,
	&dev_attr_lpfc_enable_da_id,
4804 4805
	&dev_attr_lpfc_max_scsicmpl_time,
	&dev_attr_lpfc_stat_data_ctrl,
4806
	&dev_attr_lpfc_static_vport,
4807 4808
	&dev_attr_lpfc_fips_level,
	&dev_attr_lpfc_fips_rev,
4809 4810 4811
	NULL,
};

4812
/**
4813
 * sysfs_ctlreg_write - Write method for writing to ctlreg
4814
 * @filp: open sysfs file
4815 4816 4817 4818 4819 4820 4821 4822 4823 4824 4825 4826 4827 4828 4829 4830
 * @kobj: kernel kobject that contains the kernel class device.
 * @bin_attr: kernel attributes passed to us.
 * @buf: contains the data to be written to the adapter IOREG space.
 * @off: offset into buffer to beginning of data.
 * @count: bytes to transfer.
 *
 * Description:
 * Accessed via /sys/class/scsi_host/hostxxx/ctlreg.
 * Uses the adapter io control registers to send buf contents to the adapter.
 *
 * Returns:
 * -ERANGE off and count combo out of range
 * -EINVAL off, count or buff address invalid
 * -EPERM adapter is offline
 * value of count, buf contents written
 **/
已提交
4831
static ssize_t
4832 4833
sysfs_ctlreg_write(struct file *filp, struct kobject *kobj,
		   struct bin_attribute *bin_attr,
4834
		   char *buf, loff_t off, size_t count)
已提交
4835 4836
{
	size_t buf_off;
4837 4838
	struct device *dev = container_of(kobj, struct device, kobj);
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
4839 4840
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
已提交
4841

4842 4843 4844
	if (phba->sli_rev >= LPFC_SLI_REV4)
		return -EPERM;

已提交
4845 4846 4847
	if ((off + count) > FF_REG_AREA_SIZE)
		return -ERANGE;

4848 4849
	if (count <= LPFC_REG_WRITE_KEY_SIZE)
		return 0;
已提交
4850 4851 4852 4853

	if (off % 4 || count % 4 || (unsigned long)buf % 4)
		return -EINVAL;

4854 4855 4856 4857 4858
	/* This is to protect HBA registers from accidental writes. */
	if (memcmp(buf, LPFC_REG_WRITE_KEY, LPFC_REG_WRITE_KEY_SIZE))
		return -EINVAL;

	if (!(vport->fc_flag & FC_OFFLINE_MODE))
已提交
4859 4860
		return -EPERM;

J
James Smart 已提交
4861
	spin_lock_irq(&phba->hbalock);
4862 4863 4864
	for (buf_off = 0; buf_off < count - LPFC_REG_WRITE_KEY_SIZE;
			buf_off += sizeof(uint32_t))
		writel(*((uint32_t *)(buf + buf_off + LPFC_REG_WRITE_KEY_SIZE)),
已提交
4865 4866
		       phba->ctrl_regs_memmap_p + off + buf_off);

J
James Smart 已提交
4867
	spin_unlock_irq(&phba->hbalock);
已提交
4868 4869 4870 4871

	return count;
}

4872
/**
4873
 * sysfs_ctlreg_read - Read method for reading from ctlreg
4874
 * @filp: open sysfs file
4875 4876
 * @kobj: kernel kobject that contains the kernel class device.
 * @bin_attr: kernel attributes passed to us.
4877
 * @buf: if successful contains the data from the adapter IOREG space.
4878 4879 4880 4881 4882 4883 4884 4885 4886 4887 4888 4889
 * @off: offset into buffer to beginning of data.
 * @count: bytes to transfer.
 *
 * Description:
 * Accessed via /sys/class/scsi_host/hostxxx/ctlreg.
 * Uses the adapter io control registers to read data into buf.
 *
 * Returns:
 * -ERANGE off and count combo out of range
 * -EINVAL off, count or buff address invalid
 * value of count, buf contents read
 **/
已提交
4890
static ssize_t
4891 4892
sysfs_ctlreg_read(struct file *filp, struct kobject *kobj,
		  struct bin_attribute *bin_attr,
4893
		  char *buf, loff_t off, size_t count)
已提交
4894 4895 4896
{
	size_t buf_off;
	uint32_t * tmp_ptr;
4897 4898
	struct device *dev = container_of(kobj, struct device, kobj);
	struct Scsi_Host  *shost = class_to_shost(dev);
J
James Smart 已提交
4899 4900
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
已提交
4901

4902 4903 4904
	if (phba->sli_rev >= LPFC_SLI_REV4)
		return -EPERM;

已提交
4905 4906 4907 4908 4909 4910 4911 4912 4913 4914 4915
	if (off > FF_REG_AREA_SIZE)
		return -ERANGE;

	if ((off + count) > FF_REG_AREA_SIZE)
		count = FF_REG_AREA_SIZE - off;

	if (count == 0) return 0;

	if (off % 4 || count % 4 || (unsigned long)buf % 4)
		return -EINVAL;

J
James Smart 已提交
4916
	spin_lock_irq(&phba->hbalock);
已提交
4917 4918 4919 4920 4921 4922

	for (buf_off = 0; buf_off < count; buf_off += sizeof(uint32_t)) {
		tmp_ptr = (uint32_t *)(buf + buf_off);
		*tmp_ptr = readl(phba->ctrl_regs_memmap_p + off + buf_off);
	}

J
James Smart 已提交
4923
	spin_unlock_irq(&phba->hbalock);
已提交
4924 4925 4926 4927 4928 4929 4930 4931 4932 4933 4934 4935 4936 4937

	return count;
}

static struct bin_attribute sysfs_ctlreg_attr = {
	.attr = {
		.name = "ctlreg",
		.mode = S_IRUSR | S_IWUSR,
	},
	.size = 256,
	.read = sysfs_ctlreg_read,
	.write = sysfs_ctlreg_write,
};

4938
/**
4939
 * sysfs_mbox_write - Write method for writing information via mbox
4940
 * @filp: open sysfs file
4941 4942 4943 4944 4945 4946 4947
 * @kobj: kernel kobject that contains the kernel class device.
 * @bin_attr: kernel attributes passed to us.
 * @buf: contains the data to be written to sysfs mbox.
 * @off: offset into buffer to beginning of data.
 * @count: bytes to transfer.
 *
 * Description:
4948 4949
 * Deprecated function. All mailbox access from user space is performed via the
 * bsg interface.
4950 4951
 *
 * Returns:
4952
 * -EPERM operation not permitted
4953
 **/
已提交
4954
static ssize_t
4955 4956
sysfs_mbox_write(struct file *filp, struct kobject *kobj,
		 struct bin_attribute *bin_attr,
4957
		 char *buf, loff_t off, size_t count)
已提交
4958
{
4959
	return -EPERM;
已提交
4960 4961
}

4962
/**
4963
 * sysfs_mbox_read - Read method for reading information via mbox
4964
 * @filp: open sysfs file
4965 4966 4967 4968 4969 4970 4971
 * @kobj: kernel kobject that contains the kernel class device.
 * @bin_attr: kernel attributes passed to us.
 * @buf: contains the data to be read from sysfs mbox.
 * @off: offset into buffer to beginning of data.
 * @count: bytes to transfer.
 *
 * Description:
4972 4973
 * Deprecated function. All mailbox access from user space is performed via the
 * bsg interface.
4974 4975
 *
 * Returns:
4976
 * -EPERM operation not permitted
4977
 **/
已提交
4978
static ssize_t
4979 4980
sysfs_mbox_read(struct file *filp, struct kobject *kobj,
		struct bin_attribute *bin_attr,
4981
		char *buf, loff_t off, size_t count)
已提交
4982
{
4983
	return -EPERM;
已提交
4984 4985 4986 4987 4988 4989 4990
}

static struct bin_attribute sysfs_mbox_attr = {
	.attr = {
		.name = "mbox",
		.mode = S_IRUSR | S_IWUSR,
	},
4991
	.size = MAILBOX_SYSFS_MAX,
已提交
4992 4993 4994 4995
	.read = sysfs_mbox_read,
	.write = sysfs_mbox_write,
};

4996
/**
4997
 * lpfc_alloc_sysfs_attr - Creates the ctlreg and mbox entries
4998 4999 5000 5001 5002 5003
 * @vport: address of lpfc vport structure.
 *
 * Return codes:
 * zero on success
 * error return code from sysfs_create_bin_file()
 **/
已提交
5004
int
J
James Smart 已提交
5005
lpfc_alloc_sysfs_attr(struct lpfc_vport *vport)
已提交
5006
{
J
James Smart 已提交
5007
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
已提交
5008 5009
	int error;

5010
	error = sysfs_create_bin_file(&shost->shost_dev.kobj,
5011 5012 5013 5014
				      &sysfs_drvr_stat_data_attr);

	/* Virtual ports do not need ctrl_reg and mbox */
	if (error || vport->port_type == LPFC_NPIV_PORT)
已提交
5015 5016
		goto out;

5017
	error = sysfs_create_bin_file(&shost->shost_dev.kobj,
5018
				      &sysfs_ctlreg_attr);
已提交
5019
	if (error)
5020
		goto out_remove_stat_attr;
已提交
5021

5022
	error = sysfs_create_bin_file(&shost->shost_dev.kobj,
5023
				      &sysfs_mbox_attr);
5024
	if (error)
5025
		goto out_remove_ctlreg_attr;
5026

已提交
5027 5028
	return 0;
out_remove_ctlreg_attr:
5029
	sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_ctlreg_attr);
5030 5031 5032
out_remove_stat_attr:
	sysfs_remove_bin_file(&shost->shost_dev.kobj,
			&sysfs_drvr_stat_data_attr);
已提交
5033 5034 5035 5036
out:
	return error;
}

5037
/**
5038
 * lpfc_free_sysfs_attr - Removes the ctlreg and mbox entries
5039 5040
 * @vport: address of lpfc vport structure.
 **/
已提交
5041
void
J
James Smart 已提交
5042
lpfc_free_sysfs_attr(struct lpfc_vport *vport)
已提交
5043
{
J
James Smart 已提交
5044
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5045 5046
	sysfs_remove_bin_file(&shost->shost_dev.kobj,
		&sysfs_drvr_stat_data_attr);
5047 5048 5049
	/* Virtual ports do not need ctrl_reg and mbox */
	if (vport->port_type == LPFC_NPIV_PORT)
		return;
5050 5051
	sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_mbox_attr);
	sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_ctlreg_attr);
已提交
5052 5053 5054 5055 5056 5057
}

/*
 * Dynamic FC Host Attributes Support
 */

5058
/**
5059
 * lpfc_get_host_port_id - Copy the vport DID into the scsi host port id
5060 5061
 * @shost: kernel scsi host pointer.
 **/
已提交
5062 5063 5064
static void
lpfc_get_host_port_id(struct Scsi_Host *shost)
{
J
James Smart 已提交
5065 5066
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;

已提交
5067
	/* note: fc_myDID already in cpu endianness */
J
James Smart 已提交
5068
	fc_host_port_id(shost) = vport->fc_myDID;
已提交
5069 5070
}

5071
/**
5072
 * lpfc_get_host_port_type - Set the value of the scsi host port type
5073 5074
 * @shost: kernel scsi host pointer.
 **/
已提交
5075 5076 5077
static void
lpfc_get_host_port_type(struct Scsi_Host *shost)
{
J
James Smart 已提交
5078 5079
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
已提交
5080 5081 5082

	spin_lock_irq(shost->host_lock);

5083 5084 5085
	if (vport->port_type == LPFC_NPIV_PORT) {
		fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
	} else if (lpfc_is_link_up(phba)) {
5086
		if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
J
James Smart 已提交
5087
			if (vport->fc_flag & FC_PUBLIC_LOOP)
已提交
5088 5089 5090 5091
				fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
			else
				fc_host_port_type(shost) = FC_PORTTYPE_LPORT;
		} else {
J
James Smart 已提交
5092
			if (vport->fc_flag & FC_FABRIC)
已提交
5093 5094 5095 5096 5097 5098 5099 5100 5101 5102
				fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
			else
				fc_host_port_type(shost) = FC_PORTTYPE_PTP;
		}
	} else
		fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;

	spin_unlock_irq(shost->host_lock);
}

5103
/**
5104
 * lpfc_get_host_port_state - Set the value of the scsi host port state
5105 5106
 * @shost: kernel scsi host pointer.
 **/
已提交
5107 5108 5109
static void
lpfc_get_host_port_state(struct Scsi_Host *shost)
{
J
James Smart 已提交
5110 5111
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
已提交
5112 5113 5114

	spin_lock_irq(shost->host_lock);

J
James Smart 已提交
5115
	if (vport->fc_flag & FC_OFFLINE_MODE)
已提交
5116 5117
		fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE;
	else {
J
James Smart 已提交
5118 5119
		switch (phba->link_state) {
		case LPFC_LINK_UNKNOWN:
已提交
5120 5121 5122 5123 5124 5125
		case LPFC_LINK_DOWN:
			fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
			break;
		case LPFC_LINK_UP:
		case LPFC_CLEAR_LA:
		case LPFC_HBA_READY:
5126 5127 5128 5129 5130 5131 5132
			/* Links up, reports port state accordingly */
			if (vport->port_state < LPFC_VPORT_READY)
				fc_host_port_state(shost) =
							FC_PORTSTATE_BYPASSED;
			else
				fc_host_port_state(shost) =
							FC_PORTSTATE_ONLINE;
已提交
5133 5134 5135 5136 5137 5138 5139 5140 5141 5142 5143 5144 5145
			break;
		case LPFC_HBA_ERROR:
			fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
			break;
		default:
			fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
			break;
		}
	}

	spin_unlock_irq(shost->host_lock);
}

5146
/**
5147
 * lpfc_get_host_speed - Set the value of the scsi host speed
5148 5149
 * @shost: kernel scsi host pointer.
 **/
已提交
5150 5151 5152
static void
lpfc_get_host_speed(struct Scsi_Host *shost)
{
J
James Smart 已提交
5153 5154
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
已提交
5155 5156 5157

	spin_lock_irq(shost->host_lock);

5158
	if ((lpfc_is_link_up(phba)) && (!(phba->hba_flag & HBA_FCOE_MODE))) {
已提交
5159
		switch(phba->fc_linkspeed) {
5160 5161
		case LPFC_LINK_SPEED_1GHZ:
			fc_host_speed(shost) = FC_PORTSPEED_1GBIT;
已提交
5162
			break;
5163 5164
		case LPFC_LINK_SPEED_2GHZ:
			fc_host_speed(shost) = FC_PORTSPEED_2GBIT;
已提交
5165
			break;
5166 5167
		case LPFC_LINK_SPEED_4GHZ:
			fc_host_speed(shost) = FC_PORTSPEED_4GBIT;
已提交
5168
			break;
5169 5170
		case LPFC_LINK_SPEED_8GHZ:
			fc_host_speed(shost) = FC_PORTSPEED_8GBIT;
5171
			break;
5172 5173
		case LPFC_LINK_SPEED_10GHZ:
			fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
5174
			break;
5175 5176 5177
		case LPFC_LINK_SPEED_16GHZ:
			fc_host_speed(shost) = FC_PORTSPEED_16GBIT;
			break;
5178 5179 5180
		case LPFC_LINK_SPEED_32GHZ:
			fc_host_speed(shost) = FC_PORTSPEED_32GBIT;
			break;
5181 5182
		default:
			fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
已提交
5183 5184
			break;
		}
5185 5186
	} else
		fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
已提交
5187 5188 5189 5190

	spin_unlock_irq(shost->host_lock);
}

5191
/**
5192
 * lpfc_get_host_fabric_name - Set the value of the scsi host fabric name
5193 5194
 * @shost: kernel scsi host pointer.
 **/
已提交
5195 5196 5197
static void
lpfc_get_host_fabric_name (struct Scsi_Host *shost)
{
J
James Smart 已提交
5198 5199
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
5200
	u64 node_name;
已提交
5201 5202 5203

	spin_lock_irq(shost->host_lock);

5204 5205 5206 5207
	if ((vport->port_state > LPFC_FLOGI) &&
	    ((vport->fc_flag & FC_FABRIC) ||
	     ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
	      (vport->fc_flag & FC_PUBLIC_LOOP))))
A
Andrew Morton 已提交
5208
		node_name = wwn_to_u64(phba->fc_fabparam.nodeName.u.wwn);
已提交
5209 5210
	else
		/* fabric is local port if there is no F/FL_Port */
5211
		node_name = 0;
已提交
5212 5213 5214

	spin_unlock_irq(shost->host_lock);

5215
	fc_host_fabric_name(shost) = node_name;
已提交
5216 5217
}

5218
/**
5219
 * lpfc_get_stats - Return statistical information about the adapter
5220 5221 5222 5223 5224 5225 5226 5227 5228 5229
 * @shost: kernel scsi host pointer.
 *
 * Notes:
 * NULL on error for link down, no mbox pool, sli2 active,
 * management not allowed, memory allocation error, or mbox error.
 *
 * Returns:
 * NULL for error
 * address of the adapter host statistics
 **/
已提交
5230 5231 5232
static struct fc_host_statistics *
lpfc_get_stats(struct Scsi_Host *shost)
{
J
James Smart 已提交
5233 5234 5235
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	struct lpfc_sli   *psli = &phba->sli;
5236
	struct fc_host_statistics *hs = &phba->link_stats;
5237
	struct lpfc_lnk_stat * lso = &psli->lnk_stat_offsets;
已提交
5238 5239
	LPFC_MBOXQ_t *pmboxq;
	MAILBOX_t *pmb;
5240
	unsigned long seconds;
5241
	int rc = 0;
已提交
5242

5243 5244 5245 5246
	/*
	 * prevent udev from issuing mailbox commands until the port is
	 * configured.
	 */
J
James Smart 已提交
5247 5248
	if (phba->link_state < LPFC_LINK_DOWN ||
	    !phba->mbox_mem_pool ||
5249
	    (phba->sli.sli_flag & LPFC_SLI_ACTIVE) == 0)
5250
		return NULL;
J
James Smart 已提交
5251 5252

	if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
5253 5254
		return NULL;

已提交
5255 5256 5257 5258 5259
	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (!pmboxq)
		return NULL;
	memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));

5260
	pmb = &pmboxq->u.mb;
已提交
5261 5262 5263
	pmb->mbxCommand = MBX_READ_STATUS;
	pmb->mbxOwner = OWN_HOST;
	pmboxq->context1 = NULL;
5264
	pmboxq->vport = vport;
已提交
5265

5266
	if (vport->fc_flag & FC_OFFLINE_MODE)
已提交
5267
		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
5268
	else
已提交
5269 5270 5271
		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);

	if (rc != MBX_SUCCESS) {
J
James Smart 已提交
5272
		if (rc != MBX_TIMEOUT)
5273
			mempool_free(pmboxq, phba->mbox_mem_pool);
已提交
5274 5275 5276
		return NULL;
	}

5277 5278
	memset(hs, 0, sizeof (struct fc_host_statistics));

已提交
5279
	hs->tx_frames = pmb->un.varRdStatus.xmitFrameCnt;
5280 5281 5282 5283 5284 5285 5286
	/*
	 * The MBX_READ_STATUS returns tx_k_bytes which has to
	 * converted to words
	 */
	hs->tx_words = (uint64_t)
			((uint64_t)pmb->un.varRdStatus.xmitByteCnt
			* (uint64_t)256);
已提交
5287
	hs->rx_frames = pmb->un.varRdStatus.rcvFrameCnt;
5288 5289 5290
	hs->rx_words = (uint64_t)
			((uint64_t)pmb->un.varRdStatus.rcvByteCnt
			 * (uint64_t)256);
已提交
5291

5292
	memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
已提交
5293 5294 5295
	pmb->mbxCommand = MBX_READ_LNK_STAT;
	pmb->mbxOwner = OWN_HOST;
	pmboxq->context1 = NULL;
5296
	pmboxq->vport = vport;
已提交
5297

5298
	if (vport->fc_flag & FC_OFFLINE_MODE)
已提交
5299
		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
5300
	else
已提交
5301 5302 5303
		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);

	if (rc != MBX_SUCCESS) {
J
James Smart 已提交
5304
		if (rc != MBX_TIMEOUT)
5305
			mempool_free(pmboxq, phba->mbox_mem_pool);
已提交
5306 5307 5308 5309 5310 5311 5312 5313 5314 5315 5316
		return NULL;
	}

	hs->link_failure_count = pmb->un.varRdLnk.linkFailureCnt;
	hs->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt;
	hs->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt;
	hs->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt;
	hs->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord;
	hs->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
	hs->error_frames = pmb->un.varRdLnk.crcCnt;

5317 5318 5319 5320 5321 5322 5323 5324
	hs->link_failure_count -= lso->link_failure_count;
	hs->loss_of_sync_count -= lso->loss_of_sync_count;
	hs->loss_of_signal_count -= lso->loss_of_signal_count;
	hs->prim_seq_protocol_err_count -= lso->prim_seq_protocol_err_count;
	hs->invalid_tx_word_count -= lso->invalid_tx_word_count;
	hs->invalid_crc_count -= lso->invalid_crc_count;
	hs->error_frames -= lso->error_frames;

5325
	if (phba->hba_flag & HBA_FCOE_MODE) {
5326 5327 5328
		hs->lip_count = -1;
		hs->nos_count = (phba->link_events >> 1);
		hs->nos_count -= lso->link_events;
5329
	} else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
已提交
5330
		hs->lip_count = (phba->fc_eventTag >> 1);
5331
		hs->lip_count -= lso->link_events;
已提交
5332 5333 5334 5335
		hs->nos_count = -1;
	} else {
		hs->lip_count = -1;
		hs->nos_count = (phba->fc_eventTag >> 1);
5336
		hs->nos_count -= lso->link_events;
已提交
5337 5338 5339 5340
	}

	hs->dumped_frames = -1;

5341 5342 5343 5344 5345 5346
	seconds = get_seconds();
	if (seconds < psli->stats_start)
		hs->seconds_since_last_reset = seconds +
				((unsigned long)-1 - psli->stats_start);
	else
		hs->seconds_since_last_reset = seconds - psli->stats_start;
已提交
5347

5348 5349
	mempool_free(pmboxq, phba->mbox_mem_pool);

已提交
5350 5351 5352
	return hs;
}

5353
/**
5354
 * lpfc_reset_stats - Copy the adapter link stats information
5355 5356
 * @shost: kernel scsi host pointer.
 **/
5357 5358 5359
static void
lpfc_reset_stats(struct Scsi_Host *shost)
{
J
James Smart 已提交
5360 5361 5362 5363
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	struct lpfc_sli   *psli = &phba->sli;
	struct lpfc_lnk_stat *lso = &psli->lnk_stat_offsets;
5364 5365 5366 5367
	LPFC_MBOXQ_t *pmboxq;
	MAILBOX_t *pmb;
	int rc = 0;

J
James Smart 已提交
5368
	if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
5369 5370
		return;

5371 5372 5373 5374 5375
	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (!pmboxq)
		return;
	memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));

5376
	pmb = &pmboxq->u.mb;
5377 5378 5379 5380
	pmb->mbxCommand = MBX_READ_STATUS;
	pmb->mbxOwner = OWN_HOST;
	pmb->un.varWords[0] = 0x1; /* reset request */
	pmboxq->context1 = NULL;
5381
	pmboxq->vport = vport;
5382

J
James Smart 已提交
5383
	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
5384
		(!(psli->sli_flag & LPFC_SLI_ACTIVE)))
5385 5386 5387 5388 5389
		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
	else
		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);

	if (rc != MBX_SUCCESS) {
J
James Smart 已提交
5390
		if (rc != MBX_TIMEOUT)
5391 5392 5393 5394 5395 5396 5397 5398
			mempool_free(pmboxq, phba->mbox_mem_pool);
		return;
	}

	memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
	pmb->mbxCommand = MBX_READ_LNK_STAT;
	pmb->mbxOwner = OWN_HOST;
	pmboxq->context1 = NULL;
5399
	pmboxq->vport = vport;
5400

J
James Smart 已提交
5401
	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
5402
	    (!(psli->sli_flag & LPFC_SLI_ACTIVE)))
5403 5404 5405 5406 5407
		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
	else
		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);

	if (rc != MBX_SUCCESS) {
J
James Smart 已提交
5408
		if (rc != MBX_TIMEOUT)
5409 5410 5411 5412 5413 5414 5415 5416 5417 5418 5419
			mempool_free( pmboxq, phba->mbox_mem_pool);
		return;
	}

	lso->link_failure_count = pmb->un.varRdLnk.linkFailureCnt;
	lso->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt;
	lso->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt;
	lso->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt;
	lso->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord;
	lso->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
	lso->error_frames = pmb->un.varRdLnk.crcCnt;
5420
	if (phba->hba_flag & HBA_FCOE_MODE)
5421 5422 5423
		lso->link_events = (phba->link_events >> 1);
	else
		lso->link_events = (phba->fc_eventTag >> 1);
5424 5425 5426

	psli->stats_start = get_seconds();

5427 5428
	mempool_free(pmboxq, phba->mbox_mem_pool);

5429 5430
	return;
}
已提交
5431 5432 5433 5434 5435

/*
 * The LPFC driver treats linkdown handling as target loss events so there
 * are no sysfs handlers for link_down_tmo.
 */
5436

5437
/**
5438
 * lpfc_get_node_by_target - Return the nodelist for a target
5439 5440 5441 5442 5443 5444
 * @starget: kernel scsi target pointer.
 *
 * Returns:
 * address of the node list if found
 * NULL target not found
 **/
5445 5446
static struct lpfc_nodelist *
lpfc_get_node_by_target(struct scsi_target *starget)
已提交
5447
{
J
James Smart 已提交
5448 5449
	struct Scsi_Host  *shost = dev_to_shost(starget->dev.parent);
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5450
	struct lpfc_nodelist *ndlp;
已提交
5451 5452

	spin_lock_irq(shost->host_lock);
5453
	/* Search for this, mapped, target ID */
J
James Smart 已提交
5454
	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5455 5456
		if (NLP_CHK_NODE_ACT(ndlp) &&
		    ndlp->nlp_state == NLP_STE_MAPPED_NODE &&
5457 5458 5459
		    starget->id == ndlp->nlp_sid) {
			spin_unlock_irq(shost->host_lock);
			return ndlp;
已提交
5460 5461 5462
		}
	}
	spin_unlock_irq(shost->host_lock);
5463 5464
	return NULL;
}
已提交
5465

5466
/**
5467
 * lpfc_get_starget_port_id - Set the target port id to the ndlp DID or -1
5468 5469
 * @starget: kernel scsi target pointer.
 **/
5470 5471 5472 5473 5474 5475
static void
lpfc_get_starget_port_id(struct scsi_target *starget)
{
	struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);

	fc_starget_port_id(starget) = ndlp ? ndlp->nlp_DID : -1;
已提交
5476 5477
}

5478
/**
5479
 * lpfc_get_starget_node_name - Set the target node name
5480 5481 5482 5483
 * @starget: kernel scsi target pointer.
 *
 * Description: Set the target node name to the ndlp node name wwn or zero.
 **/
已提交
5484 5485 5486
static void
lpfc_get_starget_node_name(struct scsi_target *starget)
{
5487
	struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
已提交
5488

5489 5490
	fc_starget_node_name(starget) =
		ndlp ? wwn_to_u64(ndlp->nlp_nodename.u.wwn) : 0;
已提交
5491 5492
}

5493
/**
5494
 * lpfc_get_starget_port_name - Set the target port name
5495 5496 5497 5498
 * @starget: kernel scsi target pointer.
 *
 * Description:  set the target port name to the ndlp port name wwn or zero.
 **/
已提交
5499 5500 5501
static void
lpfc_get_starget_port_name(struct scsi_target *starget)
{
5502
	struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
已提交
5503

5504 5505
	fc_starget_port_name(starget) =
		ndlp ? wwn_to_u64(ndlp->nlp_portname.u.wwn) : 0;
已提交
5506 5507
}

5508
/**
5509
 * lpfc_set_rport_loss_tmo - Set the rport dev loss tmo
5510 5511 5512 5513 5514 5515 5516
 * @rport: fc rport address.
 * @timeout: new value for dev loss tmo.
 *
 * Description:
 * If timeout is non zero set the dev_loss_tmo to timeout, else set
 * dev_loss_tmo to one.
 **/
已提交
5517 5518 5519 5520
static void
lpfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
{
	if (timeout)
5521
		rport->dev_loss_tmo = timeout;
已提交
5522
	else
5523
		rport->dev_loss_tmo = 1;
已提交
5524 5525
}

5526
/**
5527
 * lpfc_rport_show_function - Return rport target information
5528 5529 5530 5531 5532 5533 5534 5535 5536 5537
 *
 * Description:
 * Macro that uses field to generate a function with the name lpfc_show_rport_
 *
 * lpfc_show_rport_##field: returns the bytes formatted in buf
 * @cdev: class converted to an fc_rport.
 * @buf: on return contains the target_field or zero.
 *
 * Returns: size of formatted string.
 **/
已提交
5538 5539
#define lpfc_rport_show_function(field, format_string, sz, cast)	\
static ssize_t								\
5540 5541 5542
lpfc_show_rport_##field (struct device *dev,				\
			 struct device_attribute *attr,			\
			 char *buf)					\
已提交
5543
{									\
5544
	struct fc_rport *rport = transport_class_to_rport(dev);		\
已提交
5545 5546 5547 5548 5549 5550 5551 5552 5553
	struct lpfc_rport_data *rdata = rport->hostdata;		\
	return snprintf(buf, sz, format_string,				\
		(rdata->target) ? cast rdata->target->field : 0);	\
}

#define lpfc_rport_rd_attr(field, format_string, sz)			\
	lpfc_rport_show_function(field, format_string, sz, )		\
static FC_RPORT_ATTR(field, S_IRUGO, lpfc_show_rport_##field, NULL)

5554
/**
5555
 * lpfc_set_vport_symbolic_name - Set the vport's symbolic name
5556 5557 5558 5559 5560
 * @fc_vport: The fc_vport who's symbolic name has been changed.
 *
 * Description:
 * This function is called by the transport after the @fc_vport's symbolic name
 * has been changed. This function re-registers the symbolic name with the
L
Lucas De Marchi 已提交
5561
 * switch to propagate the change into the fabric if the vport is active.
5562 5563 5564 5565 5566 5567 5568 5569 5570
 **/
static void
lpfc_set_vport_symbolic_name(struct fc_vport *fc_vport)
{
	struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;

	if (vport->port_state == LPFC_VPORT_READY)
		lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
}
已提交
5571

5572 5573 5574 5575 5576 5577
/**
 * lpfc_hba_log_verbose_init - Set hba's log verbose level
 * @phba: Pointer to lpfc_hba struct.
 *
 * This function is called by the lpfc_get_cfgparam() routine to set the
 * module lpfc_log_verbose into the @phba cfg_log_verbose for use with
5578
 * log message according to the module's lpfc_log_verbose parameter setting
5579 5580 5581 5582 5583 5584 5585 5586
 * before hba port or vport created.
 **/
static void
lpfc_hba_log_verbose_init(struct lpfc_hba *phba, uint32_t verbose)
{
	phba->cfg_log_verbose = verbose;
}

已提交
5587 5588 5589 5590 5591 5592 5593 5594
struct fc_function_template lpfc_transport_functions = {
	/* fixed attributes the driver supports */
	.show_host_node_name = 1,
	.show_host_port_name = 1,
	.show_host_supported_classes = 1,
	.show_host_supported_fc4s = 1,
	.show_host_supported_speeds = 1,
	.show_host_maxframe_size = 1,
5595
	.show_host_symbolic_name = 1,
已提交
5596 5597 5598 5599 5600 5601 5602 5603 5604 5605 5606 5607 5608 5609 5610 5611 5612 5613 5614 5615 5616 5617 5618 5619 5620 5621

	/* dynamic attributes the driver supports */
	.get_host_port_id = lpfc_get_host_port_id,
	.show_host_port_id = 1,

	.get_host_port_type = lpfc_get_host_port_type,
	.show_host_port_type = 1,

	.get_host_port_state = lpfc_get_host_port_state,
	.show_host_port_state = 1,

	/* active_fc4s is shown but doesn't change (thus no get function) */
	.show_host_active_fc4s = 1,

	.get_host_speed = lpfc_get_host_speed,
	.show_host_speed = 1,

	.get_host_fabric_name = lpfc_get_host_fabric_name,
	.show_host_fabric_name = 1,

	/*
	 * The LPFC driver treats linkdown handling as target loss events
	 * so there are no sysfs handlers for link_down_tmo.
	 */

	.get_fc_host_stats = lpfc_get_stats,
5622
	.reset_fc_host_stats = lpfc_reset_stats,
已提交
5623 5624 5625 5626 5627 5628 5629 5630 5631 5632 5633 5634 5635 5636 5637 5638

	.dd_fcrport_size = sizeof(struct lpfc_rport_data),
	.show_rport_maxframe_size = 1,
	.show_rport_supported_classes = 1,

	.set_rport_dev_loss_tmo = lpfc_set_rport_loss_tmo,
	.show_rport_dev_loss_tmo = 1,

	.get_starget_port_id  = lpfc_get_starget_port_id,
	.show_starget_port_id = 1,

	.get_starget_node_name = lpfc_get_starget_node_name,
	.show_starget_node_name = 1,

	.get_starget_port_name = lpfc_get_starget_port_name,
	.show_starget_port_name = 1,
5639 5640

	.issue_fc_host_lip = lpfc_issue_lip,
5641 5642
	.dev_loss_tmo_callbk = lpfc_dev_loss_tmo_callbk,
	.terminate_rport_io = lpfc_terminate_rport_io,
5643 5644

	.dd_fcvport_size = sizeof(struct lpfc_vport *),
5645 5646 5647 5648

	.vport_disable = lpfc_vport_disable,

	.set_vport_symbolic_name = lpfc_set_vport_symbolic_name,
5649 5650 5651

	.bsg_request = lpfc_bsg_request,
	.bsg_timeout = lpfc_bsg_timeout,
5652 5653
};

5654 5655 5656 5657 5658 5659 5660 5661
struct fc_function_template lpfc_vport_transport_functions = {
	/* fixed attributes the driver supports */
	.show_host_node_name = 1,
	.show_host_port_name = 1,
	.show_host_supported_classes = 1,
	.show_host_supported_fc4s = 1,
	.show_host_supported_speeds = 1,
	.show_host_maxframe_size = 1,
5662
	.show_host_symbolic_name = 1,
5663 5664 5665 5666 5667 5668 5669 5670 5671 5672 5673 5674 5675 5676 5677 5678 5679 5680 5681 5682 5683 5684 5685 5686 5687 5688 5689 5690 5691 5692 5693 5694 5695 5696 5697 5698 5699 5700 5701 5702 5703 5704 5705 5706 5707 5708 5709 5710

	/* dynamic attributes the driver supports */
	.get_host_port_id = lpfc_get_host_port_id,
	.show_host_port_id = 1,

	.get_host_port_type = lpfc_get_host_port_type,
	.show_host_port_type = 1,

	.get_host_port_state = lpfc_get_host_port_state,
	.show_host_port_state = 1,

	/* active_fc4s is shown but doesn't change (thus no get function) */
	.show_host_active_fc4s = 1,

	.get_host_speed = lpfc_get_host_speed,
	.show_host_speed = 1,

	.get_host_fabric_name = lpfc_get_host_fabric_name,
	.show_host_fabric_name = 1,

	/*
	 * The LPFC driver treats linkdown handling as target loss events
	 * so there are no sysfs handlers for link_down_tmo.
	 */

	.get_fc_host_stats = lpfc_get_stats,
	.reset_fc_host_stats = lpfc_reset_stats,

	.dd_fcrport_size = sizeof(struct lpfc_rport_data),
	.show_rport_maxframe_size = 1,
	.show_rport_supported_classes = 1,

	.set_rport_dev_loss_tmo = lpfc_set_rport_loss_tmo,
	.show_rport_dev_loss_tmo = 1,

	.get_starget_port_id  = lpfc_get_starget_port_id,
	.show_starget_port_id = 1,

	.get_starget_node_name = lpfc_get_starget_node_name,
	.show_starget_node_name = 1,

	.get_starget_port_name = lpfc_get_starget_port_name,
	.show_starget_port_name = 1,

	.dev_loss_tmo_callbk = lpfc_dev_loss_tmo_callbk,
	.terminate_rport_io = lpfc_terminate_rport_io,

	.vport_disable = lpfc_vport_disable,
5711 5712

	.set_vport_symbolic_name = lpfc_set_vport_symbolic_name,
5713 5714
};

5715
/**
5716
 * lpfc_get_cfgparam - Used during probe_one to init the adapter structure
5717 5718
 * @phba: lpfc_hba pointer.
 **/
已提交
5719 5720 5721
void
lpfc_get_cfgparam(struct lpfc_hba *phba)
{
5722
	lpfc_fcp_io_sched_init(phba, lpfc_fcp_io_sched);
5723
	lpfc_fcp2_no_tgt_reset_init(phba, lpfc_fcp2_no_tgt_reset);
5724 5725
	lpfc_cr_delay_init(phba, lpfc_cr_delay);
	lpfc_cr_count_init(phba, lpfc_cr_count);
5726
	lpfc_multi_ring_support_init(phba, lpfc_multi_ring_support);
5727 5728
	lpfc_multi_ring_rctl_init(phba, lpfc_multi_ring_rctl);
	lpfc_multi_ring_type_init(phba, lpfc_multi_ring_type);
5729 5730 5731
	lpfc_ack0_init(phba, lpfc_ack0);
	lpfc_topology_init(phba, lpfc_topology);
	lpfc_link_speed_init(phba, lpfc_link_speed);
5732
	lpfc_poll_tmo_init(phba, lpfc_poll_tmo);
5733
	lpfc_task_mgmt_tmo_init(phba, lpfc_task_mgmt_tmo);
5734
	lpfc_enable_npiv_init(phba, lpfc_enable_npiv);
5735
	lpfc_fcf_failover_policy_init(phba, lpfc_fcf_failover_policy);
5736
	lpfc_enable_rrq_init(phba, lpfc_enable_rrq);
5737 5738
	lpfc_fdmi_on_init(phba, lpfc_fdmi_on);
	lpfc_enable_SmartSAN_init(phba, lpfc_enable_SmartSAN);
5739
	lpfc_use_msi_init(phba, lpfc_use_msi);
5740
	lpfc_fcp_imax_init(phba, lpfc_fcp_imax);
5741
	lpfc_fcp_cpu_map_init(phba, lpfc_fcp_cpu_map);
5742
	lpfc_fcp_io_channel_init(phba, lpfc_fcp_io_channel);
5743 5744
	lpfc_enable_hba_reset_init(phba, lpfc_enable_hba_reset);
	lpfc_enable_hba_heartbeat_init(phba, lpfc_enable_hba_heartbeat);
5745 5746 5747 5748 5749 5750 5751 5752 5753
	lpfc_EnableXLane_init(phba, lpfc_EnableXLane);
	if (phba->sli_rev != LPFC_SLI_REV4)
		phba->cfg_EnableXLane = 0;
	lpfc_XLanePriority_init(phba, lpfc_XLanePriority);
	memset(phba->cfg_oas_tgt_wwpn, 0, (8 * sizeof(uint8_t)));
	memset(phba->cfg_oas_vpt_wwpn, 0, (8 * sizeof(uint8_t)));
	phba->cfg_oas_lun_state = 0;
	phba->cfg_oas_lun_status = 0;
	phba->cfg_oas_flags = 0;
5754
	phba->cfg_oas_priority = 0;
5755
	lpfc_enable_bg_init(phba, lpfc_enable_bg);
5756 5757
	lpfc_prot_mask_init(phba, lpfc_prot_mask);
	lpfc_prot_guard_init(phba, lpfc_prot_guard);
5758 5759 5760
	if (phba->sli_rev == LPFC_SLI_REV4)
		phba->cfg_poll = 0;
	else
5761
		phba->cfg_poll = lpfc_poll;
5762

5763
	phba->cfg_soft_wwnn = 0L;
5764
	phba->cfg_soft_wwpn = 0L;
5765
	lpfc_sg_seg_cnt_init(phba, lpfc_sg_seg_cnt);
5766
	lpfc_prot_sg_seg_cnt_init(phba, lpfc_prot_sg_seg_cnt);
5767
	lpfc_hba_queue_depth_init(phba, lpfc_hba_queue_depth);
5768
	lpfc_hba_log_verbose_init(phba, lpfc_log_verbose);
J
James Smart 已提交
5769
	lpfc_aer_support_init(phba, lpfc_aer_support);
5770
	lpfc_sriov_nr_virtfn_init(phba, lpfc_sriov_nr_virtfn);
5771
	lpfc_request_firmware_upgrade_init(phba, lpfc_req_fw_upgrade);
5772
	lpfc_suppress_link_up_init(phba, lpfc_suppress_link_up);
5773
	lpfc_iocb_cnt_init(phba, lpfc_iocb_cnt);
5774
	lpfc_delay_discovery_init(phba, lpfc_delay_discovery);
5775
	lpfc_sli_mode_init(phba, lpfc_sli_mode);
5776
	phba->cfg_enable_dss = 1;
J
James Smart 已提交
5777
	lpfc_enable_mds_diags_init(phba, lpfc_enable_mds_diags);
5778 5779
	return;
}
5780

5781
/**
5782
 * lpfc_get_vport_cfgparam - Used during port create, init the vport structure
5783 5784
 * @vport: lpfc_vport pointer.
 **/
5785 5786 5787
void
lpfc_get_vport_cfgparam(struct lpfc_vport *vport)
{
5788
	lpfc_log_verbose_init(vport, lpfc_log_verbose);
5789
	lpfc_lun_queue_depth_init(vport, lpfc_lun_queue_depth);
5790
	lpfc_tgt_queue_depth_init(vport, lpfc_tgt_queue_depth);
5791 5792 5793 5794 5795 5796
	lpfc_devloss_tmo_init(vport, lpfc_devloss_tmo);
	lpfc_nodev_tmo_init(vport, lpfc_nodev_tmo);
	lpfc_peer_port_login_init(vport, lpfc_peer_port_login);
	lpfc_restrict_login_init(vport, lpfc_restrict_login);
	lpfc_fcp_class_init(vport, lpfc_fcp_class);
	lpfc_use_adisc_init(vport, lpfc_use_adisc);
5797
	lpfc_first_burst_size_init(vport, lpfc_first_burst_size);
5798
	lpfc_max_scsicmpl_time_init(vport, lpfc_max_scsicmpl_time);
5799 5800 5801
	lpfc_discovery_threads_init(vport, lpfc_discovery_threads);
	lpfc_max_luns_init(vport, lpfc_max_luns);
	lpfc_scan_down_init(vport, lpfc_scan_down);
J
James Smart 已提交
5802
	lpfc_enable_da_id_init(vport, lpfc_enable_da_id);
已提交
5803 5804
	return;
}